From 8ea3fceff4e0622f16441e261d125709c8819577 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:04 -0300 Subject: target/riscv/cpu.c: split CPU options from riscv_cpu_extensions[] We'll add a new CPU type that will enable a considerable amount of extensions. To make it easier for us we'll do a few cleanups in our existing riscv_cpu_extensions[] array. Start by splitting all CPU non-boolean options from it. Create a new riscv_cpu_options[] array for them. Add all these properties in riscv_cpu_add_user_properties() as it is already being done today. 'mmu' and 'pmp' aren't really extensions in the usual way we think about RISC-V extensions. These are closer to CPU features/options, so move both to riscv_cpu_options[] too. In the near future we'll need to match all extensions with all entries in isa_edata_arr[], and so it happens that both 'mmu' and 'pmp' do not have a riscv,isa string (thus, no priv spec version restriction). This further emphasizes the point that these are more a CPU option than an extension. No functional changes made. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Weiwei Li Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-2-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 33 +++++++++++++++++++++++---------- 1 file changed, 23 insertions(+), 10 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index f5572704de..03143c3686 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1806,7 +1806,6 @@ static void riscv_cpu_add_misa_properties(Object *cpu_obj) static Property riscv_cpu_extensions[] = { /* Defaults for standard extensions */ - DEFINE_PROP_UINT8("pmu-num", RISCVCPU, cfg.pmu_num, 16), DEFINE_PROP_BOOL("sscofpmf", RISCVCPU, cfg.ext_sscofpmf, false), DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true), DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true), @@ -1819,15 +1818,8 @@ static Property riscv_cpu_extensions[] = { DEFINE_PROP_BOOL("Zve32f", RISCVCPU, cfg.ext_zve32f, false), DEFINE_PROP_BOOL("Zve64f", RISCVCPU, cfg.ext_zve64f, false), DEFINE_PROP_BOOL("Zve64d", RISCVCPU, cfg.ext_zve64d, false), - DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), - DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true), DEFINE_PROP_BOOL("sstc", RISCVCPU, cfg.ext_sstc, true), - DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec), - DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec), - DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128), - DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64), - DEFINE_PROP_BOOL("smstateen", RISCVCPU, cfg.ext_smstateen, false), DEFINE_PROP_BOOL("svadu", RISCVCPU, cfg.ext_svadu, true), DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false), @@ -1858,9 +1850,7 @@ static Property riscv_cpu_extensions[] = { DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false), DEFINE_PROP_BOOL("zicbom", RISCVCPU, cfg.ext_icbom, true), - DEFINE_PROP_UINT16("cbom_blocksize", RISCVCPU, cfg.cbom_blocksize, 64), DEFINE_PROP_BOOL("zicboz", RISCVCPU, cfg.ext_icboz, true), - DEFINE_PROP_UINT16("cboz_blocksize", RISCVCPU, cfg.cboz_blocksize, 64), DEFINE_PROP_BOOL("zmmul", RISCVCPU, cfg.ext_zmmul, false), @@ -1914,6 +1904,21 @@ static Property riscv_cpu_extensions[] = { DEFINE_PROP_END_OF_LIST(), }; +static Property riscv_cpu_options[] = { + DEFINE_PROP_UINT8("pmu-num", RISCVCPU, cfg.pmu_num, 16), + + DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), + DEFINE_PROP_BOOL("pmp", RISCVCPU, cfg.pmp, true), + + DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec), + DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec), + + DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128), + DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64), + + DEFINE_PROP_UINT16("cbom_blocksize", RISCVCPU, cfg.cbom_blocksize, 64), + DEFINE_PROP_UINT16("cboz_blocksize", RISCVCPU, cfg.cboz_blocksize, 64), +}; #ifndef CONFIG_USER_ONLY static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, @@ -1982,6 +1987,14 @@ static void riscv_cpu_add_user_properties(Object *obj) #endif qdev_property_add_static(dev, prop); } + + for (int i = 0; i < ARRAY_SIZE(riscv_cpu_options); i++) { + /* Check if KVM created the property already */ + if (object_property_find(obj, riscv_cpu_options[i].name)) { + continue; + } + qdev_property_add_static(dev, &riscv_cpu_options[i]); + } } static Property riscv_cpu_properties[] = { -- cgit v1.2.3 From bfb37c693a8dd19f41f9017821a48c188eed41e7 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:05 -0300 Subject: target/riscv/cpu.c: skip 'bool' check when filtering KVM props After the introduction of riscv_cpu_options[] all properties in riscv_cpu_extensions[] are booleans. This check is now obsolete. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-3-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 03143c3686..e02f399c81 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1972,17 +1972,11 @@ static void riscv_cpu_add_user_properties(Object *obj) * Set the default to disabled for every extension * unknown to KVM and error out if the user attempts * to enable any of them. - * - * We're giving a pass for non-bool properties since they're - * not related to the availability of extensions and can be - * safely ignored as is. */ - if (prop->info == &qdev_prop_bool) { - object_property_add(obj, prop->name, "bool", - NULL, cpu_set_cfg_unavailable, - NULL, (void *)prop->name); - continue; - } + object_property_add(obj, prop->name, "bool", + NULL, cpu_set_cfg_unavailable, + NULL, (void *)prop->name); + continue; } #endif qdev_property_add_static(dev, prop); -- cgit v1.2.3 From 68aba1f2af89b0bc6231264dfcfc9e78e1fe2a10 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:06 -0300 Subject: target/riscv/cpu.c: split kvm prop handling to its own helper Future patches will split the existing Property arrays even further, and the existing code in riscv_cpu_add_user_properties() will start to scale bad with it because it's dealing with KVM constraints mixed in with TCG constraints. We're going to pay a high price to share a couple of common lines of code between the two. Create a new kvm_riscv_cpu_add_kvm_properties() helper that will be forked from riscv_cpu_add_user_properties() if we're running KVM. The helper includes all properties that a KVM CPU will add. The rest of riscv_cpu_add_user_properties() body will then be relieved from having to deal with KVM constraints. The helper was declared in kvm_stubs.h, while being implemented in cpu.c, to allow '--enable-debug' builds to work. The compiler won't remove the kvm_riscv_cpu_add_kvm_properties() reference when 'kvm_enabled()' is false if we end up with an unused function. Even though being a KVM only helper we can't implement it in kvm.c due to its many dependencies inside cpu.c, so make it public in kvm_riscv.h and keep its implementation in cpu.c for now. We'll move it to kvm.c in the near future. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-4-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 65 ++++++++++++++++++++++++++++++------------------ target/riscv/kvm_riscv.h | 3 +++ 2 files changed, 44 insertions(+), 24 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index e02f399c81..2a8fbd214a 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1920,7 +1920,7 @@ static Property riscv_cpu_options[] = { DEFINE_PROP_UINT16("cboz_blocksize", RISCVCPU, cfg.cboz_blocksize, 64), }; -#ifndef CONFIG_USER_ONLY +#ifdef CONFIG_KVM static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) @@ -1937,6 +1937,44 @@ static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, propname); } } + +static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) +{ + /* Check if KVM created the property already */ + if (object_property_find(obj, prop_name)) { + return; + } + + /* + * Set the default to disabled for every extension + * unknown to KVM and error out if the user attempts + * to enable any of them. + */ + object_property_add(obj, prop_name, "bool", + NULL, cpu_set_cfg_unavailable, + NULL, (void *)prop_name); +} + +void kvm_riscv_cpu_add_kvm_properties(Object *obj) +{ + Property *prop; + DeviceState *dev = DEVICE(obj); + + kvm_riscv_init_user_properties(obj); + riscv_cpu_add_misa_properties(obj); + + for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { + riscv_cpu_add_kvm_unavail_prop(obj, prop->name); + } + + for (int i = 0; i < ARRAY_SIZE(riscv_cpu_options); i++) { + /* Check if KVM created the property already */ + if (object_property_find(obj, riscv_cpu_options[i].name)) { + continue; + } + qdev_property_add_static(dev, &riscv_cpu_options[i]); + } +} #endif /* @@ -1954,39 +1992,18 @@ static void riscv_cpu_add_user_properties(Object *obj) riscv_add_satp_mode_properties(obj); if (kvm_enabled()) { - kvm_riscv_init_user_properties(obj); + kvm_riscv_cpu_add_kvm_properties(obj); + return; } #endif riscv_cpu_add_misa_properties(obj); for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { -#ifndef CONFIG_USER_ONLY - if (kvm_enabled()) { - /* Check if KVM created the property already */ - if (object_property_find(obj, prop->name)) { - continue; - } - - /* - * Set the default to disabled for every extension - * unknown to KVM and error out if the user attempts - * to enable any of them. - */ - object_property_add(obj, prop->name, "bool", - NULL, cpu_set_cfg_unavailable, - NULL, (void *)prop->name); - continue; - } -#endif qdev_property_add_static(dev, prop); } for (int i = 0; i < ARRAY_SIZE(riscv_cpu_options); i++) { - /* Check if KVM created the property already */ - if (object_property_find(obj, riscv_cpu_options[i].name)) { - continue; - } qdev_property_add_static(dev, &riscv_cpu_options[i]); } } diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h index de8c209ebc..69e807fbfb 100644 --- a/target/riscv/kvm_riscv.h +++ b/target/riscv/kvm_riscv.h @@ -19,6 +19,9 @@ #ifndef QEMU_KVM_RISCV_H #define QEMU_KVM_RISCV_H +/* Temporarily implemented in cpu.c */ +void kvm_riscv_cpu_add_kvm_properties(Object *obj); + void kvm_riscv_init_user_properties(Object *cpu_obj); void kvm_riscv_reset_vcpu(RISCVCPU *cpu); void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); -- cgit v1.2.3 From d09d085a088bc7da92bbb68d9c2fed0e6dc8aed8 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:07 -0300 Subject: target/riscv: add DEFINE_PROP_END_OF_LIST() to riscv_cpu_options[] MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add DEFINE_PROP_END_OF_LIST() and eliminate the ARRAY_SIZE() usage when iterating in the riscv_cpu_options[] array, making it similar to what we already do when working with riscv_cpu_extensions[]. We also have a more sophisticated motivation behind this change. In the future we might need to export riscv_cpu_options[] to other files, and ARRAY_LIST() doesn't work properly in that case because the array size isn't exposed to the header file. Here's a future sight of what we would deal with: ./target/riscv/kvm.c:1057:5: error: nested extern declaration of 'riscv_cpu_add_misa_properties' [-Werror=nested-externs] n file included from ../target/riscv/kvm.c:19: home/danielhb/work/qemu/include/qemu/osdep.h:473:31: error: invalid application of 'sizeof' to incomplete type 'const RISCVCPUMultiExtConfig[]' 473 | #define ARRAY_SIZE(x) ((sizeof(x) / sizeof((x)[0])) + \ | ^ ./target/riscv/kvm.c:1047:29: note: in expansion of macro 'ARRAY_SIZE' 1047 | for (int i = 0; i < ARRAY_SIZE(_array); i++) { \ | ^~~~~~~~~~ ./target/riscv/kvm.c:1059:5: note: in expansion of macro 'ADD_UNAVAIL_KVM_PROP_ARRAY' 1059 | ADD_UNAVAIL_KVM_PROP_ARRAY(obj, riscv_cpu_extensions); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ home/danielhb/work/qemu/include/qemu/osdep.h:473:31: error: invalid application of 'sizeof' to incomplete type 'const RISCVCPUMultiExtConfig[]' 473 | #define ARRAY_SIZE(x) ((sizeof(x) / sizeof((x)[0])) + \ | ^ ./target/riscv/kvm.c:1047:29: note: in expansion of macro 'ARRAY_SIZE' 1047 | for (int i = 0; i < ARRAY_SIZE(_array); i++) { \ Homogenize the present and change the future by using DEFINE_PROP_END_OF_LIST() in riscv_cpu_options[]. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20230912132423.268494-5-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 2a8fbd214a..f7d3dd900c 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1918,6 +1918,8 @@ static Property riscv_cpu_options[] = { DEFINE_PROP_UINT16("cbom_blocksize", RISCVCPU, cfg.cbom_blocksize, 64), DEFINE_PROP_UINT16("cboz_blocksize", RISCVCPU, cfg.cboz_blocksize, 64), + + DEFINE_PROP_END_OF_LIST(), }; #ifdef CONFIG_KVM @@ -1967,12 +1969,12 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) riscv_cpu_add_kvm_unavail_prop(obj, prop->name); } - for (int i = 0; i < ARRAY_SIZE(riscv_cpu_options); i++) { + for (prop = riscv_cpu_options; prop && prop->name; prop++) { /* Check if KVM created the property already */ - if (object_property_find(obj, riscv_cpu_options[i].name)) { + if (object_property_find(obj, prop->name)) { continue; } - qdev_property_add_static(dev, &riscv_cpu_options[i]); + qdev_property_add_static(dev, prop); } } #endif @@ -2003,8 +2005,8 @@ static void riscv_cpu_add_user_properties(Object *obj) qdev_property_add_static(dev, prop); } - for (int i = 0; i < ARRAY_SIZE(riscv_cpu_options); i++) { - qdev_property_add_static(dev, &riscv_cpu_options[i]); + for (prop = riscv_cpu_options; prop && prop->name; prop++) { + qdev_property_add_static(dev, prop); } } -- cgit v1.2.3 From b955fd1a009153bf398ad91c84a9d9a85574193a Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:08 -0300 Subject: target/riscv/cpu.c: split non-ratified exts from riscv_cpu_extensions[] Create a new riscv_cpu_experimental_exts[] to store the non-ratified extensions properties. Once they are ratified we'll move them back to riscv_cpu_extensions[]. riscv_cpu_add_user_properties() and riscv_cpu_add_kvm_properties() are changed to keep adding non-ratified properties to users. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-6-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index f7d3dd900c..cba2c4998a 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1877,8 +1877,11 @@ static Property riscv_cpu_extensions[] = { DEFINE_PROP_BOOL("xtheadsync", RISCVCPU, cfg.ext_xtheadsync, false), DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false), - /* These are experimental so mark with 'x-' */ + DEFINE_PROP_END_OF_LIST(), +}; +/* These are experimental so mark with 'x-' */ +static Property riscv_cpu_experimental_exts[] = { /* ePMP 0.9.3 */ DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false), DEFINE_PROP_BOOL("x-smaia", RISCVCPU, cfg.ext_smaia, false), @@ -1969,6 +1972,10 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) riscv_cpu_add_kvm_unavail_prop(obj, prop->name); } + for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) { + riscv_cpu_add_kvm_unavail_prop(obj, prop->name); + } + for (prop = riscv_cpu_options; prop && prop->name; prop++) { /* Check if KVM created the property already */ if (object_property_find(obj, prop->name)) { @@ -2008,6 +2015,10 @@ static void riscv_cpu_add_user_properties(Object *obj) for (prop = riscv_cpu_options; prop && prop->name; prop++) { qdev_property_add_static(dev, prop); } + + for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) { + qdev_property_add_static(dev, prop); + } } static Property riscv_cpu_properties[] = { -- cgit v1.2.3 From 82822b5d5a5fe2a7f780c9d27534ecaa42cacdec Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:09 -0300 Subject: target/riscv/cpu.c: split vendor exts from riscv_cpu_extensions[] Our goal is to make riscv_cpu_extensions[] hold only ratified, non-vendor extensions. Create a new riscv_cpu_vendor_exts[] array for them, changing riscv_cpu_add_user_properties() and riscv_cpu_add_kvm_properties() accordingly. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-7-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index cba2c4998a..6289457514 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1863,7 +1863,10 @@ static Property riscv_cpu_extensions[] = { DEFINE_PROP_BOOL("zcmt", RISCVCPU, cfg.ext_zcmt, false), DEFINE_PROP_BOOL("zicond", RISCVCPU, cfg.ext_zicond, false), - /* Vendor-specific custom extensions */ + DEFINE_PROP_END_OF_LIST(), +}; + +static Property riscv_cpu_vendor_exts[] = { DEFINE_PROP_BOOL("xtheadba", RISCVCPU, cfg.ext_xtheadba, false), DEFINE_PROP_BOOL("xtheadbb", RISCVCPU, cfg.ext_xtheadbb, false), DEFINE_PROP_BOOL("xtheadbs", RISCVCPU, cfg.ext_xtheadbs, false), @@ -1972,6 +1975,10 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) riscv_cpu_add_kvm_unavail_prop(obj, prop->name); } + for (prop = riscv_cpu_vendor_exts; prop && prop->name; prop++) { + riscv_cpu_add_kvm_unavail_prop(obj, prop->name); + } + for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) { riscv_cpu_add_kvm_unavail_prop(obj, prop->name); } @@ -2016,6 +2023,10 @@ static void riscv_cpu_add_user_properties(Object *obj) qdev_property_add_static(dev, prop); } + for (prop = riscv_cpu_vendor_exts; prop && prop->name; prop++) { + qdev_property_add_static(dev, prop); + } + for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) { qdev_property_add_static(dev, prop); } -- cgit v1.2.3 From 370d7c8ef8fb4630fb422c4176477d134ac8793d Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:10 -0300 Subject: target/riscv/cpu.c: add riscv_cpu_add_qdev_prop_array() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The code inside riscv_cpu_add_user_properties() became quite repetitive after recent changes. Add a helper to hide the repetition away. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20230912132423.268494-8-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 29 +++++++++++++---------------- 1 file changed, 13 insertions(+), 16 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 6289457514..848b0d1c82 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1928,6 +1928,15 @@ static Property riscv_cpu_options[] = { DEFINE_PROP_END_OF_LIST(), }; +static void riscv_cpu_add_qdev_prop_array(DeviceState *dev, Property *array) +{ + g_assert(array); + + for (Property *prop = array; prop && prop->name; prop++) { + qdev_property_add_static(dev, prop); + } +} + #ifdef CONFIG_KVM static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, const char *name, @@ -2001,7 +2010,6 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) */ static void riscv_cpu_add_user_properties(Object *obj) { - Property *prop; DeviceState *dev = DEVICE(obj); #ifndef CONFIG_USER_ONLY @@ -2015,21 +2023,10 @@ static void riscv_cpu_add_user_properties(Object *obj) riscv_cpu_add_misa_properties(obj); - for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { - qdev_property_add_static(dev, prop); - } - - for (prop = riscv_cpu_options; prop && prop->name; prop++) { - qdev_property_add_static(dev, prop); - } - - for (prop = riscv_cpu_vendor_exts; prop && prop->name; prop++) { - qdev_property_add_static(dev, prop); - } - - for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) { - qdev_property_add_static(dev, prop); - } + riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_extensions); + riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_options); + riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_vendor_exts); + riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_experimental_exts); } static Property riscv_cpu_properties[] = { -- cgit v1.2.3 From b55c39b3f57dfad1fca00aaa042ec569ab6e8ecd Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:11 -0300 Subject: target/riscv/cpu.c: add riscv_cpu_add_kvm_unavail_prop_array() Use a helper in riscv_cpu_add_kvm_properties() to eliminate some of its code repetition. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230912132423.268494-9-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 848b0d1c82..3cc7cfd7ef 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1972,6 +1972,16 @@ static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) NULL, (void *)prop_name); } +static void riscv_cpu_add_kvm_unavail_prop_array(Object *obj, + Property *array) +{ + g_assert(array); + + for (Property *prop = array; prop && prop->name; prop++) { + riscv_cpu_add_kvm_unavail_prop(obj, prop->name); + } +} + void kvm_riscv_cpu_add_kvm_properties(Object *obj) { Property *prop; @@ -1980,17 +1990,9 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) kvm_riscv_init_user_properties(obj); riscv_cpu_add_misa_properties(obj); - for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { - riscv_cpu_add_kvm_unavail_prop(obj, prop->name); - } - - for (prop = riscv_cpu_vendor_exts; prop && prop->name; prop++) { - riscv_cpu_add_kvm_unavail_prop(obj, prop->name); - } - - for (prop = riscv_cpu_experimental_exts; prop && prop->name; prop++) { - riscv_cpu_add_kvm_unavail_prop(obj, prop->name); - } + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_extensions); + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_vendor_exts); + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_experimental_exts); for (prop = riscv_cpu_options; prop && prop->name; prop++) { /* Check if KVM created the property already */ -- cgit v1.2.3 From cbaac1d22b80364e31f075c651912451018d4459 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:12 -0300 Subject: target/riscv/cpu.c: limit cfg->vext_spec log message Inside riscv_cpu_validate_v() we're always throwing a log message if the user didn't set a vector version via 'vext_spec'. We're going to include one case with the 'max' CPU where env->vext_ver will be set in the cpu_init(). But that alone will not stop the "vector version is not specified" message from appearing. The usefulness of this log message is debatable for the generic CPUs, but for a 'max' CPU type, where we are supposed to deliver a CPU model with all features possible, it's strange to force users to set 'vext_spec' to get rid of this message. Change riscv_cpu_validate_v() to not throw this log message if env->vext_ver is already set. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Weiwei Li Message-ID: <20230912132423.268494-10-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 3cc7cfd7ef..7b9d0c7e52 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -959,8 +959,6 @@ static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg, Error **errp) { - int vext_version = VEXT_VERSION_1_00_0; - if (!is_power_of_2(cfg->vlen)) { error_setg(errp, "Vector extension VLEN must be power of 2"); return; @@ -983,17 +981,18 @@ static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg, } if (cfg->vext_spec) { if (!g_strcmp0(cfg->vext_spec, "v1.0")) { - vext_version = VEXT_VERSION_1_00_0; + env->vext_ver = VEXT_VERSION_1_00_0; } else { error_setg(errp, "Unsupported vector spec version '%s'", cfg->vext_spec); return; } - } else { + } else if (env->vext_ver == 0) { qemu_log("vector version is not specified, " "use the default value v1.0\n"); + + env->vext_ver = VEXT_VERSION_1_00_0; } - env->vext_ver = vext_version; } static void riscv_cpu_validate_priv_spec(RISCVCPU *cpu, Error **errp) -- cgit v1.2.3 From b97e5a6b0a93f8e8b83c18c89c4c408fb7ae7cb0 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:13 -0300 Subject: target/riscv: add 'max' CPU type The 'max' CPU type is used by tooling to determine what's the most capable CPU a current QEMU version implements. Other archs such as ARM implements this type. Let's add it to RISC-V. What we consider "most capable CPU" in this context are related to ratified, non-vendor extensions. This means that we want the 'max' CPU to enable all (possible) ratified extensions by default. The reasoning behind this design is (1) vendor extensions can conflict with each other and we won't play favorities deciding which one is default or not and (2) non-ratified extensions are always prone to changes, not being stable enough to be enabled by default. All this said, we're still not able to enable all ratified extensions due to conflicts between them. Zfinx and all its dependencies aren't enabled because of a conflict with RVF. zce, zcmp and zcmt are also disabled due to RVD conflicts. When running with 64 bits we're also disabling zcf. MISA bits RVG, RVJ and RVV are also being set manually since they're default disabled. This is the resulting 'riscv,isa' DT for this new CPU: rv64imafdcvh_zicbom_zicboz_zicsr_zifencei_zihintpause_zawrs_zfa_ zfh_zfhmin_zca_zcb_zcd_zba_zbb_zbc_zbkb_zbkc_zbkx_zbs_zk_zkn_zknd_ zkne_zknh_zkr_zks_zksed_zksh_zkt_zve32f_zve64f_zve64d_ smstateen_sscofpmf_sstc_svadu_svinval_svnapot_svpbmt Signed-off-by: Daniel Henrique Barboza Reviewed-by: Weiwei Li Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-11-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu-qom.h | 1 + target/riscv/cpu.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 57 insertions(+) diff --git a/target/riscv/cpu-qom.h b/target/riscv/cpu-qom.h index 04af50983e..f3fbe37a2c 100644 --- a/target/riscv/cpu-qom.h +++ b/target/riscv/cpu-qom.h @@ -30,6 +30,7 @@ #define CPU_RESOLVING_TYPE TYPE_RISCV_CPU #define TYPE_RISCV_CPU_ANY RISCV_CPU_TYPE_NAME("any") +#define TYPE_RISCV_CPU_MAX RISCV_CPU_TYPE_NAME("max") #define TYPE_RISCV_CPU_BASE32 RISCV_CPU_TYPE_NAME("rv32") #define TYPE_RISCV_CPU_BASE64 RISCV_CPU_TYPE_NAME("rv64") #define TYPE_RISCV_CPU_BASE128 RISCV_CPU_TYPE_NAME("x-rv128") diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 7b9d0c7e52..c9de7ddb4e 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -259,6 +259,7 @@ static const char * const riscv_intr_names[] = { }; static void riscv_cpu_add_user_properties(Object *obj); +static void riscv_init_max_cpu_extensions(Object *obj); const char *riscv_cpu_get_trap_name(target_ulong cause, bool async) { @@ -396,6 +397,25 @@ static void riscv_any_cpu_init(Object *obj) cpu->cfg.pmp = true; } +static void riscv_max_cpu_init(Object *obj) +{ + RISCVCPU *cpu = RISCV_CPU(obj); + CPURISCVState *env = &cpu->env; + RISCVMXL mlx = MXL_RV64; + +#ifdef TARGET_RISCV32 + mlx = MXL_RV32; +#endif + set_misa(env, mlx, 0); + riscv_cpu_add_user_properties(obj); + riscv_init_max_cpu_extensions(obj); + env->priv_ver = PRIV_VERSION_LATEST; +#ifndef CONFIG_USER_ONLY + set_satp_mode_max_supported(RISCV_CPU(obj), mlx == MXL_RV32 ? + VM_1_10_SV32 : VM_1_10_SV57); +#endif +} + #if defined(TARGET_RISCV64) static void rv64_base_cpu_init(Object *obj) { @@ -2030,6 +2050,41 @@ static void riscv_cpu_add_user_properties(Object *obj) riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_experimental_exts); } +/* + * The 'max' type CPU will have all possible ratified + * non-vendor extensions enabled. + */ +static void riscv_init_max_cpu_extensions(Object *obj) +{ + RISCVCPU *cpu = RISCV_CPU(obj); + CPURISCVState *env = &cpu->env; + Property *prop; + + /* Enable RVG, RVJ and RVV that are disabled by default */ + set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); + + for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { + object_property_set_bool(obj, prop->name, true, NULL); + } + + /* set vector version */ + env->vext_ver = VEXT_VERSION_1_00_0; + + /* Zfinx is not compatible with F. Disable it */ + object_property_set_bool(obj, "zfinx", false, NULL); + object_property_set_bool(obj, "zdinx", false, NULL); + object_property_set_bool(obj, "zhinx", false, NULL); + object_property_set_bool(obj, "zhinxmin", false, NULL); + + object_property_set_bool(obj, "zce", false, NULL); + object_property_set_bool(obj, "zcmp", false, NULL); + object_property_set_bool(obj, "zcmt", false, NULL); + + if (env->misa_mxl != MXL_RV32) { + object_property_set_bool(obj, "zcf", false, NULL); + } +} + static Property riscv_cpu_properties[] = { DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true), @@ -2368,6 +2423,7 @@ static const TypeInfo riscv_cpu_type_infos[] = { .abstract = true, }, DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init), + DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_MAX, riscv_max_cpu_init), #if defined(CONFIG_KVM) DEFINE_CPU(TYPE_RISCV_CPU_HOST, riscv_host_cpu_init), #endif -- cgit v1.2.3 From dfe7d2280a80cb3a212b99d1aa8ef23ddc1022a4 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:14 -0300 Subject: avocado, risc-v: add tuxboot tests for 'max' CPU MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add smoke tests to ensure that we'll not break the 'max' CPU type when adding new frozen/ratified RISC-V extensions. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé Message-ID: <20230912132423.268494-12-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- tests/avocado/tuxrun_baselines.py | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/tests/avocado/tuxrun_baselines.py b/tests/avocado/tuxrun_baselines.py index e12250eabb..c99bea6c0b 100644 --- a/tests/avocado/tuxrun_baselines.py +++ b/tests/avocado/tuxrun_baselines.py @@ -501,6 +501,38 @@ class TuxRunBaselineTest(QemuSystemTest): self.common_tuxrun(csums=sums) + def test_riscv32_maxcpu(self): + """ + :avocado: tags=arch:riscv32 + :avocado: tags=machine:virt + :avocado: tags=cpu:max + :avocado: tags=tuxboot:riscv32 + """ + sums = { "Image" : + "89599407d7334de629a40e7ad6503c73670359eb5f5ae9d686353a3d6deccbd5", + "fw_jump.elf" : + "f2ef28a0b77826f79d085d3e4aa686f1159b315eff9099a37046b18936676985", + "rootfs.ext4.zst" : + "7168d296d0283238ea73cd5a775b3dd608e55e04c7b92b76ecce31bb13108cba" } + + self.common_tuxrun(csums=sums) + + def test_riscv64_maxcpu(self): + """ + :avocado: tags=arch:riscv64 + :avocado: tags=machine:virt + :avocado: tags=cpu:max + :avocado: tags=tuxboot:riscv64 + """ + sums = { "Image" : + "cd634badc65e52fb63465ec99e309c0de0369f0841b7d9486f9729e119bac25e", + "fw_jump.elf" : + "6e3373abcab4305fe151b564a4c71110d833c21f2c0a1753b7935459e36aedcf", + "rootfs.ext4.zst" : + "b18e3a3bdf27be03da0b285e84cb71bf09eca071c3a087b42884b6982ed679eb" } + + self.common_tuxrun(csums=sums) + def test_s390(self): """ :avocado: tags=arch:s390x -- cgit v1.2.3 From f57d5f8004b70c3f7356eda574be7639d97ea2be Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:15 -0300 Subject: target/riscv: deprecate the 'any' CPU type MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The 'any' CPU type was introduced in commit dc5bd18fa5725 ("RISC-V CPU Core Definition"), being around since the beginning. It's not an easy CPU to use: it's undocumented and its name doesn't tell users much about what the CPU is supposed to bring. 'git log' doesn't help us either in knowing what was the original design of this CPU type. The closest we have is a comment from Alistair [1] where he recalls from memory that the 'any' CPU is supposed to behave like the newly added 'max' CPU. He also suggested that the 'any' CPU should be removed. The default CPUs are rv32 and rv64, so removing the 'any' CPU will have impact only on users that might have a script that uses '-cpu any'. And those users are better off using the default CPUs or the new 'max' CPU. We would love to just remove the code and be done with it, but one does not simply remove a feature in QEMU. We'll put the CPU in quarantine first, letting users know that we have the intent of removing it in the future. [1] https://lists.gnu.org/archive/html/qemu-devel/2023-07/msg02891.html Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Reviewed-by: Philippe Mathieu-Daudé Tested-by: Philippe Mathieu-Daudé Message-ID: <20230912132423.268494-13-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- docs/about/deprecated.rst | 12 ++++++++++++ target/riscv/cpu.c | 5 +++++ 2 files changed, 17 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 8b136320e2..5e3965a674 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -327,6 +327,18 @@ QEMU's ``vhost`` feature, which would eliminate the high latency costs under which the 9p ``proxy`` backend currently suffers. However as of to date nobody has indicated plans for such kind of reimplementation unfortunately. +RISC-V 'any' CPU type ``-cpu any`` (since 8.2) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +The 'any' CPU type was introduced back in 2018 and has been around since the +initial RISC-V QEMU port. Its usage has always been unclear: users don't know +what to expect from a CPU called 'any', and in fact the CPU does not do anything +special that isn't already done by the default CPUs rv32/rv64. + +After the introduction of the 'max' CPU type, RISC-V now has a good coverage +of generic CPUs: rv32 and rv64 as default CPUs and 'max' as a feature complete +CPU for both 32 and 64 bit builds. Users are then discouraged to use the 'any' +CPU type starting in 8.2. Block device options '''''''''''''''''''' diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index c9de7ddb4e..115c2d2fa4 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1522,6 +1522,11 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev); Error *local_err = NULL; + if (object_dynamic_cast(OBJECT(dev), TYPE_RISCV_CPU_ANY) != NULL) { + warn_report("The 'any' CPU is deprecated and will be " + "removed in the future."); + } + cpu_exec_realizefn(cs, &local_err); if (local_err != NULL) { error_propagate(errp, local_err); -- cgit v1.2.3 From 5f2c80f1a014a90382752ad592ccc97183b53bae Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:16 -0300 Subject: target/riscv/cpu.c: use offset in isa_ext_is_enabled/update_enabled We'll have future usage for a function where, given an offset of the struct RISCVCPUConfig, the flag is updated to a certain val. Change all existing callers to use edata->ext_enable_offset instead of 'edata'. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-14-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 115c2d2fa4..5287569e5a 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -162,18 +162,17 @@ static const struct isa_ext_data isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(xventanacondops, PRIV_VERSION_1_12_0, ext_XVentanaCondOps), }; -static bool isa_ext_is_enabled(RISCVCPU *cpu, - const struct isa_ext_data *edata) +static bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset) { - bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset; + bool *ext_enabled = (void *)&cpu->cfg + ext_offset; return *ext_enabled; } -static void isa_ext_update_enabled(RISCVCPU *cpu, - const struct isa_ext_data *edata, bool en) +static void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, + bool en) { - bool *ext_enabled = (void *)&cpu->cfg + edata->ext_enable_offset; + bool *ext_enabled = (void *)&cpu->cfg + ext_offset; *ext_enabled = en; } @@ -1045,9 +1044,10 @@ static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) /* Force disable extensions if priv spec version does not match */ for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { - if (isa_ext_is_enabled(cpu, &isa_edata_arr[i]) && + if (isa_ext_is_enabled(cpu, isa_edata_arr[i].ext_enable_offset) && (env->priv_ver < isa_edata_arr[i].min_version)) { - isa_ext_update_enabled(cpu, &isa_edata_arr[i], false); + isa_ext_update_enabled(cpu, isa_edata_arr[i].ext_enable_offset, + false); #ifndef CONFIG_USER_ONLY warn_report("disabling %s extension for hart 0x" TARGET_FMT_lx " because privilege spec version does not match", @@ -2340,7 +2340,7 @@ static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str, int i; for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { - if (isa_ext_is_enabled(cpu, &isa_edata_arr[i])) { + if (isa_ext_is_enabled(cpu, isa_edata_arr[i].ext_enable_offset)) { new = g_strconcat(old, "_", isa_edata_arr[i].name, NULL); g_free(old); old = new; -- cgit v1.2.3 From 238fd586e0bc06d104d2d095170945b97ea56e19 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:17 -0300 Subject: target/riscv: make CPUCFG() macro public MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The RISC-V KVM driver uses a CPUCFG() macro that calculates the offset of a certain field in the struct RISCVCPUConfig. We're going to use this macro in target/riscv/cpu.c as well in the next patches. Make it public. Rename it to CPU_CFG_OFFSET() for more clarity while we're at it. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20230912132423.268494-15-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 2 +- target/riscv/cpu.h | 2 ++ target/riscv/kvm.c | 8 +++----- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 5287569e5a..7544fff392 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -48,7 +48,7 @@ struct isa_ext_data { }; #define ISA_EXT_DATA_ENTRY(_name, _min_ver, _prop) \ - {#_name, _min_ver, offsetof(struct RISCVCPUConfig, _prop)} + {#_name, _min_ver, CPU_CFG_OFFSET(_prop)} /* * From vector_helper.c diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index ef9cf21c0c..cce6dee729 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -62,6 +62,8 @@ const char *riscv_get_misa_ext_name(uint32_t bit); const char *riscv_get_misa_ext_description(uint32_t bit); +#define CPU_CFG_OFFSET(_prop) offsetof(struct RISCVCPUConfig, _prop) + /* Privileged specification version */ enum { PRIV_VERSION_1_10_0 = 0, diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index c01cfb03f4..14763ec0cd 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -205,10 +205,8 @@ static void kvm_riscv_update_cpu_misa_ext(RISCVCPU *cpu, CPUState *cs) } } -#define CPUCFG(_prop) offsetof(struct RISCVCPUConfig, _prop) - #define KVM_EXT_CFG(_name, _prop, _reg_id) \ - {.name = _name, .offset = CPUCFG(_prop), \ + {.name = _name, .offset = CPU_CFG_OFFSET(_prop), \ .kvm_reg_id = _reg_id} static KVMCPUConfig kvm_multi_ext_cfgs[] = { @@ -285,13 +283,13 @@ static void kvm_cpu_set_multi_ext_cfg(Object *obj, Visitor *v, static KVMCPUConfig kvm_cbom_blocksize = { .name = "cbom_blocksize", - .offset = CPUCFG(cbom_blocksize), + .offset = CPU_CFG_OFFSET(cbom_blocksize), .kvm_reg_id = KVM_REG_RISCV_CONFIG_REG(zicbom_block_size) }; static KVMCPUConfig kvm_cboz_blocksize = { .name = "cboz_blocksize", - .offset = CPUCFG(cboz_blocksize), + .offset = CPU_CFG_OFFSET(cboz_blocksize), .kvm_reg_id = KVM_REG_RISCV_CONFIG_REG(zicboz_block_size) }; -- cgit v1.2.3 From 997e71952d1eb8d60b0807d01cf3956d84728067 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:18 -0300 Subject: target/riscv/cpu.c: introduce cpu_cfg_ext_auto_update() During realize() time we're activating a lot of extensions based on some criteria, e.g.: if (cpu->cfg.ext_zk) { cpu->cfg.ext_zkn = true; cpu->cfg.ext_zkr = true; cpu->cfg.ext_zkt = true; } This practice resulted in at least one case where we ended up enabling something we shouldn't: RVC enabling zca/zcd/zcf when using a CPU that has priv_spec older than 1.12.0. We're also not considering user choice. There's no way of doing it now but this is about to change in the next few patches. cpu_cfg_ext_auto_update() will check for priv version mismatches before enabling extensions. If we have a mismatch between the current priv version and the extension we want to enable, do not enable it. In the near future, this same function will also consider user choice when deciding if we're going to enable/disable an extension or not. For now let's use it to handle zca/zcd/zcf enablement if RVC is enabled. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-16-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 43 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 40 insertions(+), 3 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 7544fff392..bd73b61d3c 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -177,6 +177,43 @@ static void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, *ext_enabled = en; } +static int cpu_cfg_ext_get_min_version(uint32_t ext_offset) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { + if (isa_edata_arr[i].ext_enable_offset != ext_offset) { + continue; + } + + return isa_edata_arr[i].min_version; + } + + g_assert_not_reached(); +} + +static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, + bool value) +{ + CPURISCVState *env = &cpu->env; + bool prev_val = isa_ext_is_enabled(cpu, ext_offset); + int min_version; + + if (prev_val == value) { + return; + } + + if (value && env->priv_ver != PRIV_VERSION_LATEST) { + /* Do not enable it if priv_ver is older than min_version */ + min_version = cpu_cfg_ext_get_min_version(ext_offset); + if (env->priv_ver < min_version) { + return; + } + } + + isa_ext_update_enabled(cpu, ext_offset, value); +} + const char * const riscv_int_regnames[] = { "x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1", "x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3", @@ -1268,12 +1305,12 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) /* zca, zcd and zcf has a PRIV 1.12.0 restriction */ if (riscv_has_ext(env, RVC) && env->priv_ver >= PRIV_VERSION_1_12_0) { - cpu->cfg.ext_zca = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) { - cpu->cfg.ext_zcf = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); } if (riscv_has_ext(env, RVD)) { - cpu->cfg.ext_zcd = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcd), true); } } -- cgit v1.2.3 From c72b3791278a398b121c8482171b1a8f66481420 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:19 -0300 Subject: target/riscv/cpu.c: use cpu_cfg_ext_auto_update() during realize() Let's change the other instances in realize() where we're enabling an extension based on a certain criteria (e.g. it's a dependency of another extension). We're leaving icsr and ifencei being enabled during RVG for later - we'll want to error out in that case. Every other extension enablement during realize is now done via cpu_cfg_ext_auto_update(). The end goal is that only cpu init() functions will handle extension flags directly via "cpu->cfg.ext_N = true|false". Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-17-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 50 +++++++++++++++++++++++++------------------------- 1 file changed, 25 insertions(+), 25 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index bd73b61d3c..25fef13ef0 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1193,7 +1193,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) } if (cpu->cfg.ext_zfh) { - cpu->cfg.ext_zfhmin = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zfhmin), true); } if (cpu->cfg.ext_zfhmin && !riscv_has_ext(env, RVF)) { @@ -1219,17 +1219,17 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) } /* The V vector extension depends on the Zve64d extension */ - cpu->cfg.ext_zve64d = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve64d), true); } /* The Zve64d extension depends on the Zve64f extension */ if (cpu->cfg.ext_zve64d) { - cpu->cfg.ext_zve64f = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve64f), true); } /* The Zve64f extension depends on the Zve32f extension */ if (cpu->cfg.ext_zve64f) { - cpu->cfg.ext_zve32f = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve32f), true); } if (cpu->cfg.ext_zve64d && !riscv_has_ext(env, RVD)) { @@ -1243,7 +1243,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) } if (cpu->cfg.ext_zvfh) { - cpu->cfg.ext_zvfhmin = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvfhmin), true); } if (cpu->cfg.ext_zvfhmin && !cpu->cfg.ext_zve32f) { @@ -1273,7 +1273,7 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) /* Set the ISA extensions, checks should have happened above */ if (cpu->cfg.ext_zhinx) { - cpu->cfg.ext_zhinxmin = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); } if ((cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinxmin) && !cpu->cfg.ext_zfinx) { @@ -1294,12 +1294,12 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) } if (cpu->cfg.ext_zce) { - cpu->cfg.ext_zca = true; - cpu->cfg.ext_zcb = true; - cpu->cfg.ext_zcmp = true; - cpu->cfg.ext_zcmt = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcb), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmp), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmt), true); if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) { - cpu->cfg.ext_zcf = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); } } @@ -1367,26 +1367,26 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) } if (cpu->cfg.ext_zk) { - cpu->cfg.ext_zkn = true; - cpu->cfg.ext_zkr = true; - cpu->cfg.ext_zkt = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkn), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkr), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkt), true); } if (cpu->cfg.ext_zkn) { - cpu->cfg.ext_zbkb = true; - cpu->cfg.ext_zbkc = true; - cpu->cfg.ext_zbkx = true; - cpu->cfg.ext_zkne = true; - cpu->cfg.ext_zknd = true; - cpu->cfg.ext_zknh = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkb), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkc), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkx), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkne), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zknd), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zknh), true); } if (cpu->cfg.ext_zks) { - cpu->cfg.ext_zbkb = true; - cpu->cfg.ext_zbkc = true; - cpu->cfg.ext_zbkx = true; - cpu->cfg.ext_zksed = true; - cpu->cfg.ext_zksh = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkb), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkc), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkx), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zksed), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zksh), true); } /* -- cgit v1.2.3 From 549cbf789ef8669a835207e020db67d20045b1a9 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:20 -0300 Subject: target/riscv/cpu.c: introduce RISCVCPUMultiExtConfig If we want to make better decisions when auto-enabling extensions during realize() we need a way to tell if an user set an extension manually. The RISC-V KVM driver has its own solution via a KVMCPUConfig struct that has an 'user_set' flag that is set during the Property set() callback. The set() callback also does init() time validations based on the current KVM driver capabilities. For TCG we would want a 'user_set' mechanic too, but we would look ad-hoc via cpu_cfg_ext_auto_update() if a certain extension was user set or not. If we copy what was made in the KVM side we would look for 'user_set' for one into 60+ extension structs spreaded in 3 arrays (riscv_cpu_extensions, riscv_cpu_experimental_exts, riscv_cpu_vendor_exts). We'll still need an extension struct but we won't be using the 'user_set' flag: - 'RISCVCPUMultiExtConfig' will be our specialized structure, similar to what we're already doing with the MISA extensions in 'RISCVCPUMisaExtConfig'. DEFINE_PROP_BOOL() for all 3 extensions arrays were replaced by MULTI_EXT_CFG_BOOL(), a macro that will init our specialized struct; - the 'multi_ext_user_opts' hash will be used to store the offset of each extension that the user set via the set() callback, cpu_set_multi_ext_cfg(). For now we're just initializing and populating it - next patch will use it to determine if a certain extension was user set; - cpu_add_multi_ext_prop() is a new helper that will replace the qdev_property_add_static() calls that our macros are doing to populate user properties. The macro was renamed to ADD_CPU_MULTIEXT_PROPS_ARRAY() for clarity. Note that the non-extension properties in riscv_cpu_options[] still need to be declared via qdev(). Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-18-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 258 +++++++++++++++++++++++++++++++++-------------------- 1 file changed, 159 insertions(+), 99 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 25fef13ef0..fba5ce7118 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -162,6 +162,9 @@ static const struct isa_ext_data isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(xventanacondops, PRIV_VERSION_1_12_0, ext_XVentanaCondOps), }; +/* Hash that stores user set extensions */ +static GHashTable *multi_ext_user_opts; + static bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset) { bool *ext_enabled = (void *)&cpu->cfg + ext_offset; @@ -1714,6 +1717,8 @@ static void riscv_cpu_init(Object *obj) qdev_init_gpio_in(DEVICE(obj), riscv_cpu_set_irq, IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX); #endif /* CONFIG_USER_ONLY */ + + multi_ext_user_opts = g_hash_table_new(NULL, g_direct_equal); } typedef struct RISCVCPUMisaExtConfig { @@ -1865,108 +1870,118 @@ static void riscv_cpu_add_misa_properties(Object *cpu_obj) } } -static Property riscv_cpu_extensions[] = { +typedef struct RISCVCPUMultiExtConfig { + const char *name; + uint32_t offset; + bool enabled; +} RISCVCPUMultiExtConfig; + +#define MULTI_EXT_CFG_BOOL(_name, _prop, _defval) \ + {.name = _name, .offset = CPU_CFG_OFFSET(_prop), \ + .enabled = _defval} + +static RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { /* Defaults for standard extensions */ - DEFINE_PROP_BOOL("sscofpmf", RISCVCPU, cfg.ext_sscofpmf, false), - DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true), - DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true), - DEFINE_PROP_BOOL("Zihintntl", RISCVCPU, cfg.ext_zihintntl, true), - DEFINE_PROP_BOOL("Zihintpause", RISCVCPU, cfg.ext_zihintpause, true), - DEFINE_PROP_BOOL("Zawrs", RISCVCPU, cfg.ext_zawrs, true), - DEFINE_PROP_BOOL("Zfa", RISCVCPU, cfg.ext_zfa, true), - DEFINE_PROP_BOOL("Zfh", RISCVCPU, cfg.ext_zfh, false), - DEFINE_PROP_BOOL("Zfhmin", RISCVCPU, cfg.ext_zfhmin, false), - DEFINE_PROP_BOOL("Zve32f", RISCVCPU, cfg.ext_zve32f, false), - DEFINE_PROP_BOOL("Zve64f", RISCVCPU, cfg.ext_zve64f, false), - DEFINE_PROP_BOOL("Zve64d", RISCVCPU, cfg.ext_zve64d, false), - DEFINE_PROP_BOOL("sstc", RISCVCPU, cfg.ext_sstc, true), - - DEFINE_PROP_BOOL("smstateen", RISCVCPU, cfg.ext_smstateen, false), - DEFINE_PROP_BOOL("svadu", RISCVCPU, cfg.ext_svadu, true), - DEFINE_PROP_BOOL("svinval", RISCVCPU, cfg.ext_svinval, false), - DEFINE_PROP_BOOL("svnapot", RISCVCPU, cfg.ext_svnapot, false), - DEFINE_PROP_BOOL("svpbmt", RISCVCPU, cfg.ext_svpbmt, false), - - DEFINE_PROP_BOOL("zba", RISCVCPU, cfg.ext_zba, true), - DEFINE_PROP_BOOL("zbb", RISCVCPU, cfg.ext_zbb, true), - DEFINE_PROP_BOOL("zbc", RISCVCPU, cfg.ext_zbc, true), - DEFINE_PROP_BOOL("zbkb", RISCVCPU, cfg.ext_zbkb, false), - DEFINE_PROP_BOOL("zbkc", RISCVCPU, cfg.ext_zbkc, false), - DEFINE_PROP_BOOL("zbkx", RISCVCPU, cfg.ext_zbkx, false), - DEFINE_PROP_BOOL("zbs", RISCVCPU, cfg.ext_zbs, true), - DEFINE_PROP_BOOL("zk", RISCVCPU, cfg.ext_zk, false), - DEFINE_PROP_BOOL("zkn", RISCVCPU, cfg.ext_zkn, false), - DEFINE_PROP_BOOL("zknd", RISCVCPU, cfg.ext_zknd, false), - DEFINE_PROP_BOOL("zkne", RISCVCPU, cfg.ext_zkne, false), - DEFINE_PROP_BOOL("zknh", RISCVCPU, cfg.ext_zknh, false), - DEFINE_PROP_BOOL("zkr", RISCVCPU, cfg.ext_zkr, false), - DEFINE_PROP_BOOL("zks", RISCVCPU, cfg.ext_zks, false), - DEFINE_PROP_BOOL("zksed", RISCVCPU, cfg.ext_zksed, false), - DEFINE_PROP_BOOL("zksh", RISCVCPU, cfg.ext_zksh, false), - DEFINE_PROP_BOOL("zkt", RISCVCPU, cfg.ext_zkt, false), - - DEFINE_PROP_BOOL("zdinx", RISCVCPU, cfg.ext_zdinx, false), - DEFINE_PROP_BOOL("zfinx", RISCVCPU, cfg.ext_zfinx, false), - DEFINE_PROP_BOOL("zhinx", RISCVCPU, cfg.ext_zhinx, false), - DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false), - - DEFINE_PROP_BOOL("zicbom", RISCVCPU, cfg.ext_icbom, true), - DEFINE_PROP_BOOL("zicboz", RISCVCPU, cfg.ext_icboz, true), - - DEFINE_PROP_BOOL("zmmul", RISCVCPU, cfg.ext_zmmul, false), - - DEFINE_PROP_BOOL("zca", RISCVCPU, cfg.ext_zca, false), - DEFINE_PROP_BOOL("zcb", RISCVCPU, cfg.ext_zcb, false), - DEFINE_PROP_BOOL("zcd", RISCVCPU, cfg.ext_zcd, false), - DEFINE_PROP_BOOL("zce", RISCVCPU, cfg.ext_zce, false), - DEFINE_PROP_BOOL("zcf", RISCVCPU, cfg.ext_zcf, false), - DEFINE_PROP_BOOL("zcmp", RISCVCPU, cfg.ext_zcmp, false), - DEFINE_PROP_BOOL("zcmt", RISCVCPU, cfg.ext_zcmt, false), - DEFINE_PROP_BOOL("zicond", RISCVCPU, cfg.ext_zicond, false), + MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false), + MULTI_EXT_CFG_BOOL("Zifencei", ext_ifencei, true), + MULTI_EXT_CFG_BOOL("Zicsr", ext_icsr, true), + MULTI_EXT_CFG_BOOL("Zihintntl", ext_zihintntl, true), + MULTI_EXT_CFG_BOOL("Zihintpause", ext_zihintpause, true), + MULTI_EXT_CFG_BOOL("Zawrs", ext_zawrs, true), + MULTI_EXT_CFG_BOOL("Zfa", ext_zfa, true), + MULTI_EXT_CFG_BOOL("Zfh", ext_zfh, false), + MULTI_EXT_CFG_BOOL("Zfhmin", ext_zfhmin, false), + MULTI_EXT_CFG_BOOL("Zve32f", ext_zve32f, false), + MULTI_EXT_CFG_BOOL("Zve64f", ext_zve64f, false), + MULTI_EXT_CFG_BOOL("Zve64d", ext_zve64d, false), + MULTI_EXT_CFG_BOOL("sstc", ext_sstc, true), + + MULTI_EXT_CFG_BOOL("smstateen", ext_smstateen, false), + MULTI_EXT_CFG_BOOL("svadu", ext_svadu, true), + MULTI_EXT_CFG_BOOL("svinval", ext_svinval, false), + MULTI_EXT_CFG_BOOL("svnapot", ext_svnapot, false), + MULTI_EXT_CFG_BOOL("svpbmt", ext_svpbmt, false), + + MULTI_EXT_CFG_BOOL("zba", ext_zba, true), + MULTI_EXT_CFG_BOOL("zbb", ext_zbb, true), + MULTI_EXT_CFG_BOOL("zbc", ext_zbc, true), + MULTI_EXT_CFG_BOOL("zbkb", ext_zbkb, false), + MULTI_EXT_CFG_BOOL("zbkc", ext_zbkc, false), + MULTI_EXT_CFG_BOOL("zbkx", ext_zbkx, false), + MULTI_EXT_CFG_BOOL("zbs", ext_zbs, true), + MULTI_EXT_CFG_BOOL("zk", ext_zk, false), + MULTI_EXT_CFG_BOOL("zkn", ext_zkn, false), + MULTI_EXT_CFG_BOOL("zknd", ext_zknd, false), + MULTI_EXT_CFG_BOOL("zkne", ext_zkne, false), + MULTI_EXT_CFG_BOOL("zknh", ext_zknh, false), + MULTI_EXT_CFG_BOOL("zkr", ext_zkr, false), + MULTI_EXT_CFG_BOOL("zks", ext_zks, false), + MULTI_EXT_CFG_BOOL("zksed", ext_zksed, false), + MULTI_EXT_CFG_BOOL("zksh", ext_zksh, false), + MULTI_EXT_CFG_BOOL("zkt", ext_zkt, false), + + MULTI_EXT_CFG_BOOL("zdinx", ext_zdinx, false), + MULTI_EXT_CFG_BOOL("zfinx", ext_zfinx, false), + MULTI_EXT_CFG_BOOL("zhinx", ext_zhinx, false), + MULTI_EXT_CFG_BOOL("zhinxmin", ext_zhinxmin, false), + + MULTI_EXT_CFG_BOOL("zicbom", ext_icbom, true), + MULTI_EXT_CFG_BOOL("zicboz", ext_icboz, true), + + MULTI_EXT_CFG_BOOL("zmmul", ext_zmmul, false), + + MULTI_EXT_CFG_BOOL("zca", ext_zca, false), + MULTI_EXT_CFG_BOOL("zcb", ext_zcb, false), + MULTI_EXT_CFG_BOOL("zcd", ext_zcd, false), + MULTI_EXT_CFG_BOOL("zce", ext_zce, false), + MULTI_EXT_CFG_BOOL("zcf", ext_zcf, false), + MULTI_EXT_CFG_BOOL("zcmp", ext_zcmp, false), + MULTI_EXT_CFG_BOOL("zcmt", ext_zcmt, false), + MULTI_EXT_CFG_BOOL("zicond", ext_zicond, false), DEFINE_PROP_END_OF_LIST(), }; -static Property riscv_cpu_vendor_exts[] = { - DEFINE_PROP_BOOL("xtheadba", RISCVCPU, cfg.ext_xtheadba, false), - DEFINE_PROP_BOOL("xtheadbb", RISCVCPU, cfg.ext_xtheadbb, false), - DEFINE_PROP_BOOL("xtheadbs", RISCVCPU, cfg.ext_xtheadbs, false), - DEFINE_PROP_BOOL("xtheadcmo", RISCVCPU, cfg.ext_xtheadcmo, false), - DEFINE_PROP_BOOL("xtheadcondmov", RISCVCPU, cfg.ext_xtheadcondmov, false), - DEFINE_PROP_BOOL("xtheadfmemidx", RISCVCPU, cfg.ext_xtheadfmemidx, false), - DEFINE_PROP_BOOL("xtheadfmv", RISCVCPU, cfg.ext_xtheadfmv, false), - DEFINE_PROP_BOOL("xtheadmac", RISCVCPU, cfg.ext_xtheadmac, false), - DEFINE_PROP_BOOL("xtheadmemidx", RISCVCPU, cfg.ext_xtheadmemidx, false), - DEFINE_PROP_BOOL("xtheadmempair", RISCVCPU, cfg.ext_xtheadmempair, false), - DEFINE_PROP_BOOL("xtheadsync", RISCVCPU, cfg.ext_xtheadsync, false), - DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false), +static RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = { + MULTI_EXT_CFG_BOOL("xtheadba", ext_xtheadba, false), + MULTI_EXT_CFG_BOOL("xtheadbb", ext_xtheadbb, false), + MULTI_EXT_CFG_BOOL("xtheadbs", ext_xtheadbs, false), + MULTI_EXT_CFG_BOOL("xtheadcmo", ext_xtheadcmo, false), + MULTI_EXT_CFG_BOOL("xtheadcondmov", ext_xtheadcondmov, false), + MULTI_EXT_CFG_BOOL("xtheadfmemidx", ext_xtheadfmemidx, false), + MULTI_EXT_CFG_BOOL("xtheadfmv", ext_xtheadfmv, false), + MULTI_EXT_CFG_BOOL("xtheadmac", ext_xtheadmac, false), + MULTI_EXT_CFG_BOOL("xtheadmemidx", ext_xtheadmemidx, false), + MULTI_EXT_CFG_BOOL("xtheadmempair", ext_xtheadmempair, false), + MULTI_EXT_CFG_BOOL("xtheadsync", ext_xtheadsync, false), + MULTI_EXT_CFG_BOOL("xventanacondops", ext_XVentanaCondOps, false), DEFINE_PROP_END_OF_LIST(), }; /* These are experimental so mark with 'x-' */ -static Property riscv_cpu_experimental_exts[] = { +static RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = { /* ePMP 0.9.3 */ - DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false), - DEFINE_PROP_BOOL("x-smaia", RISCVCPU, cfg.ext_smaia, false), - DEFINE_PROP_BOOL("x-ssaia", RISCVCPU, cfg.ext_ssaia, false), + MULTI_EXT_CFG_BOOL("x-epmp", epmp, false), + MULTI_EXT_CFG_BOOL("x-smaia", ext_smaia, false), + MULTI_EXT_CFG_BOOL("x-ssaia", ext_ssaia, false), - DEFINE_PROP_BOOL("x-zvfh", RISCVCPU, cfg.ext_zvfh, false), - DEFINE_PROP_BOOL("x-zvfhmin", RISCVCPU, cfg.ext_zvfhmin, false), + MULTI_EXT_CFG_BOOL("x-zvfh", ext_zvfh, false), + MULTI_EXT_CFG_BOOL("x-zvfhmin", ext_zvfhmin, false), - DEFINE_PROP_BOOL("x-zfbfmin", RISCVCPU, cfg.ext_zfbfmin, false), - DEFINE_PROP_BOOL("x-zvfbfmin", RISCVCPU, cfg.ext_zvfbfmin, false), - DEFINE_PROP_BOOL("x-zvfbfwma", RISCVCPU, cfg.ext_zvfbfwma, false), + MULTI_EXT_CFG_BOOL("x-zfbfmin", ext_zfbfmin, false), + MULTI_EXT_CFG_BOOL("x-zvfbfmin", ext_zvfbfmin, false), + MULTI_EXT_CFG_BOOL("x-zvfbfwma", ext_zvfbfwma, false), /* Vector cryptography extensions */ - DEFINE_PROP_BOOL("x-zvbb", RISCVCPU, cfg.ext_zvbb, false), - DEFINE_PROP_BOOL("x-zvbc", RISCVCPU, cfg.ext_zvbc, false), - DEFINE_PROP_BOOL("x-zvkg", RISCVCPU, cfg.ext_zvkg, false), - DEFINE_PROP_BOOL("x-zvkned", RISCVCPU, cfg.ext_zvkned, false), - DEFINE_PROP_BOOL("x-zvknha", RISCVCPU, cfg.ext_zvknha, false), - DEFINE_PROP_BOOL("x-zvknhb", RISCVCPU, cfg.ext_zvknhb, false), - DEFINE_PROP_BOOL("x-zvksed", RISCVCPU, cfg.ext_zvksed, false), - DEFINE_PROP_BOOL("x-zvksh", RISCVCPU, cfg.ext_zvksh, false), + MULTI_EXT_CFG_BOOL("x-zvbb", ext_zvbb, false), + MULTI_EXT_CFG_BOOL("x-zvbc", ext_zvbc, false), + MULTI_EXT_CFG_BOOL("x-zvkg", ext_zvkg, false), + MULTI_EXT_CFG_BOOL("x-zvkned", ext_zvkned, false), + MULTI_EXT_CFG_BOOL("x-zvknha", ext_zvknha, false), + MULTI_EXT_CFG_BOOL("x-zvknhb", ext_zvknhb, false), + MULTI_EXT_CFG_BOOL("x-zvksed", ext_zvksed, false), + MULTI_EXT_CFG_BOOL("x-zvksh", ext_zvksh, false), DEFINE_PROP_END_OF_LIST(), }; @@ -1989,12 +2004,56 @@ static Property riscv_cpu_options[] = { DEFINE_PROP_END_OF_LIST(), }; -static void riscv_cpu_add_qdev_prop_array(DeviceState *dev, Property *array) +static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + const RISCVCPUMultiExtConfig *multi_ext_cfg = opaque; + bool value; + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + + isa_ext_update_enabled(RISCV_CPU(obj), multi_ext_cfg->offset, value); + + g_hash_table_insert(multi_ext_user_opts, + GUINT_TO_POINTER(multi_ext_cfg->offset), + (gpointer)value); +} + +static void cpu_get_multi_ext_cfg(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + const RISCVCPUMultiExtConfig *multi_ext_cfg = opaque; + bool value = isa_ext_is_enabled(RISCV_CPU(obj), multi_ext_cfg->offset); + + visit_type_bool(v, name, &value, errp); +} + +static void cpu_add_multi_ext_prop(Object *cpu_obj, + RISCVCPUMultiExtConfig *multi_cfg) +{ + object_property_add(cpu_obj, multi_cfg->name, "bool", + cpu_get_multi_ext_cfg, + cpu_set_multi_ext_cfg, + NULL, (void *)multi_cfg); + + /* + * Set def val directly instead of using + * object_property_set_bool() to save the set() + * callback hash for user inputs. + */ + isa_ext_update_enabled(RISCV_CPU(cpu_obj), multi_cfg->offset, + multi_cfg->enabled); +} + +static void riscv_cpu_add_multiext_prop_array(Object *obj, + RISCVCPUMultiExtConfig *array) { g_assert(array); - for (Property *prop = array; prop && prop->name; prop++) { - qdev_property_add_static(dev, prop); + for (RISCVCPUMultiExtConfig *prop = array; prop && prop->name; prop++) { + cpu_add_multi_ext_prop(obj, prop); } } @@ -2034,11 +2093,11 @@ static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) } static void riscv_cpu_add_kvm_unavail_prop_array(Object *obj, - Property *array) + RISCVCPUMultiExtConfig *array) { g_assert(array); - for (Property *prop = array; prop && prop->name; prop++) { + for (RISCVCPUMultiExtConfig *prop = array; prop && prop->name; prop++) { riscv_cpu_add_kvm_unavail_prop(obj, prop->name); } } @@ -2073,8 +2132,6 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) */ static void riscv_cpu_add_user_properties(Object *obj) { - DeviceState *dev = DEVICE(obj); - #ifndef CONFIG_USER_ONLY riscv_add_satp_mode_properties(obj); @@ -2086,10 +2143,13 @@ static void riscv_cpu_add_user_properties(Object *obj) riscv_cpu_add_misa_properties(obj); - riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_extensions); - riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_options); - riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_vendor_exts); - riscv_cpu_add_qdev_prop_array(dev, riscv_cpu_experimental_exts); + riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_extensions); + riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_vendor_exts); + riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_experimental_exts); + + for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { + qdev_property_add_static(DEVICE(obj), prop); + } } /* @@ -2100,7 +2160,7 @@ static void riscv_init_max_cpu_extensions(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); CPURISCVState *env = &cpu->env; - Property *prop; + RISCVCPUMultiExtConfig *prop; /* Enable RVG, RVJ and RVV that are disabled by default */ set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); -- cgit v1.2.3 From 25aa6f7202d5403ac123abe5cd5ff08f2e003f77 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:21 -0300 Subject: target/riscv: use isa_ext_update_enabled() in init_max_cpu_extensions() Before adding support to detect if an extension was user set we need to handle how we're enabling extensions in riscv_init_max_cpu_extensions(). object_property_set_bool() calls the set() callback for the property, and we're going to use this callback to set the 'multi_ext_user_opts' hash. This means that, as is today, all extensions we're setting for the 'max' CPU will be seen as user set in the future. Let's change set_bool() to isa_ext_update_enabled() that will just enable/disable the flag on a certain offset. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-19-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index fba5ce7118..821006f42a 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -2166,24 +2166,24 @@ static void riscv_init_max_cpu_extensions(Object *obj) set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { - object_property_set_bool(obj, prop->name, true, NULL); + isa_ext_update_enabled(cpu, prop->offset, true); } /* set vector version */ env->vext_ver = VEXT_VERSION_1_00_0; /* Zfinx is not compatible with F. Disable it */ - object_property_set_bool(obj, "zfinx", false, NULL); - object_property_set_bool(obj, "zdinx", false, NULL); - object_property_set_bool(obj, "zhinx", false, NULL); - object_property_set_bool(obj, "zhinxmin", false, NULL); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zfinx), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zdinx), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zhinx), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zhinxmin), false); - object_property_set_bool(obj, "zce", false, NULL); - object_property_set_bool(obj, "zcmp", false, NULL); - object_property_set_bool(obj, "zcmt", false, NULL); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zce), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcmp), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcmt), false); if (env->misa_mxl != MXL_RV32) { - object_property_set_bool(obj, "zcf", false, NULL); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcf), false); } } -- cgit v1.2.3 From 0a9eb9b497f3d349da77073e704c1a010cb788e5 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:22 -0300 Subject: target/riscv/cpu.c: honor user choice in cpu_cfg_ext_auto_update() Add a new cpu_cfg_ext_is_user_set() helper to check if an extension was set by the user in the command line. Use it inside cpu_cfg_ext_auto_update() to verify if the user set a certain extension and, if that's the case, do not change its value. This will make us honor user choice instead of overwriting the values. Users will then be informed whether they're using an incompatible set of extensions instead of QEMU setting a magic value that works. The reason why we're not implementing user choice for MISA extensions right now is because, today, we do not silently change any MISA bit during realize() time (we do warn when enabling bits if RVG is enabled). We do that - a lot - with multi-letter extensions though, so we're handling the most immediate concern first. After this patch, we'll now error out if the user explicitly set 'zce' to true and 'zca' to false: $ ./build/qemu-system-riscv64 -M virt -cpu rv64,zce=true,zca=false -nographic qemu-system-riscv64: Zcf/Zcd/Zcb/Zcmp/Zcmt extensions require Zca extension This didn't happen before because we were enabling 'zca' if 'zce' was enabled regardless if the user set 'zca' to false. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-20-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 821006f42a..d1a3ddadd0 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -195,6 +195,12 @@ static int cpu_cfg_ext_get_min_version(uint32_t ext_offset) g_assert_not_reached(); } +static bool cpu_cfg_ext_is_user_set(uint32_t ext_offset) +{ + return g_hash_table_contains(multi_ext_user_opts, + GUINT_TO_POINTER(ext_offset)); +} + static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, bool value) { @@ -206,6 +212,10 @@ static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, return; } + if (cpu_cfg_ext_is_user_set(ext_offset)) { + return; + } + if (value && env->priv_ver != PRIV_VERSION_LATEST) { /* Do not enable it if priv_ver is older than min_version */ min_version = cpu_cfg_ext_get_min_version(ext_offset); @@ -1843,6 +1853,12 @@ static RISCVCPUMisaExtConfig misa_ext_cfgs[] = { MISA_CFG(RVG, false), }; +/* + * We do not support user choice tracking for MISA + * extensions yet because, so far, we do not silently + * change MISA bits during realize() (RVG enables MISA + * bits but the user is warned about it). + */ static void riscv_cpu_add_misa_properties(Object *cpu_obj) { int i; -- cgit v1.2.3 From 67f94b09ac4f64d4a0595d1224ba3a425e565043 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 12 Sep 2023 10:24:23 -0300 Subject: target/riscv/cpu.c: consider user option with RVG Enabling RVG will enable a set of extensions that we're not checking if the user was okay enabling or not. And in this case we want to error out, instead of ignoring, otherwise we will be inconsistent enabling RVG without all its extensions. After this patch, disabling ifencei or icsr while enabling RVG will result in error: $ ./build/qemu-system-riscv64 -M virt -cpu rv64,g=true,Zifencei=false --nographic qemu-system-riscv64: RVG requires Zifencei but user set Zifencei to false Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20230912132423.268494-21-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index d1a3ddadd0..383e5df2a7 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1153,9 +1153,23 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) riscv_has_ext(env, RVA) && riscv_has_ext(env, RVF) && riscv_has_ext(env, RVD) && cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) { + + if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_icsr)) && + !cpu->cfg.ext_icsr) { + error_setg(errp, "RVG requires Zicsr but user set Zicsr to false"); + return; + } + + if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_ifencei)) && + !cpu->cfg.ext_ifencei) { + error_setg(errp, "RVG requires Zifencei but user set " + "Zifencei to false"); + return; + } + warn_report("Setting G will also set IMAFD_Zicsr_Zifencei"); - cpu->cfg.ext_icsr = true; - cpu->cfg.ext_ifencei = true; + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_icsr), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_ifencei), true); env->misa_ext |= RVI | RVM | RVA | RVF | RVD; env->misa_ext_mask |= RVI | RVM | RVA | RVF | RVD; -- cgit v1.2.3 From 8633951530cc923f1e7a6cd250f670f24c0ed817 Mon Sep 17 00:00:00 2001 From: "liguang.zhang" Date: Wed, 13 Sep 2023 17:13:21 +0800 Subject: target/riscv: Clear CSR values at reset and sync MPSTATE with host This patch fixes guest reboot errors when using KVM. There are two issues when rebooting a guest using KVM 1. When the guest initiates a reboot the host is unable to stop the vcpu 2. When running a SMP guest the qemu monitor system_reset causes a vcpu crash This can be fixed by clearing the CSR values at reset and syncing the MPSTATE with the host. Signed-off-by: liguang.zhang Reviewed-by: Alistair Francis Message-ID: <20230913091332.17355-1-18622748025@163.com> [ Changes by AF - Fixup commit message - Fixup patch style ] Signed-off-by: Alistair Francis --- target/riscv/kvm.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ target/riscv/kvm_riscv.h | 1 + 2 files changed, 45 insertions(+) diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index 14763ec0cd..1e4e4456b3 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -51,6 +51,8 @@ void riscv_kvm_aplic_request(void *opaque, int irq, int level) kvm_set_irq(kvm_state, irq, !!level); } +static bool cap_has_mp_state; + static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, uint64_t idx) { @@ -795,6 +797,24 @@ int kvm_arch_get_registers(CPUState *cs) return ret; } +int kvm_riscv_sync_mpstate_to_kvm(RISCVCPU *cpu, int state) +{ + if (cap_has_mp_state) { + struct kvm_mp_state mp_state = { + .mp_state = state + }; + + int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state); + if (ret) { + fprintf(stderr, "%s: failed to sync MP_STATE %d/%s\n", + __func__, ret, strerror(-ret)); + return -1; + } + } + + return 0; +} + int kvm_arch_put_registers(CPUState *cs, int level) { int ret = 0; @@ -814,6 +834,18 @@ int kvm_arch_put_registers(CPUState *cs, int level) return ret; } + if (KVM_PUT_RESET_STATE == level) { + RISCVCPU *cpu = RISCV_CPU(cs); + if (cs->cpu_index == 0) { + ret = kvm_riscv_sync_mpstate_to_kvm(cpu, KVM_MP_STATE_RUNNABLE); + } else { + ret = kvm_riscv_sync_mpstate_to_kvm(cpu, KVM_MP_STATE_STOPPED); + } + if (ret) { + return ret; + } + } + return ret; } @@ -926,6 +958,7 @@ int kvm_arch_get_default_type(MachineState *ms) int kvm_arch_init(MachineState *ms, KVMState *s) { + cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE); return 0; } @@ -1008,14 +1041,25 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) void kvm_riscv_reset_vcpu(RISCVCPU *cpu) { CPURISCVState *env = &cpu->env; + int i; if (!kvm_enabled()) { return; } + for (i = 0; i < 32; i++) { + env->gpr[i] = 0; + } env->pc = cpu->env.kernel_addr; env->gpr[10] = kvm_arch_vcpu_id(CPU(cpu)); /* a0 */ env->gpr[11] = cpu->env.fdt_addr; /* a1 */ env->satp = 0; + env->mie = 0; + env->stvec = 0; + env->sscratch = 0; + env->sepc = 0; + env->scause = 0; + env->stval = 0; + env->mip = 0; } void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h index 69e807fbfb..44b850a046 100644 --- a/target/riscv/kvm_riscv.h +++ b/target/riscv/kvm_riscv.h @@ -30,5 +30,6 @@ void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, uint64_t aplic_base, uint64_t imsic_base, uint64_t guest_num); void riscv_kvm_aplic_request(void *opaque, int irq, int level); +int kvm_riscv_sync_mpstate_to_kvm(RISCVCPU *cpu, int state); #endif -- cgit v1.2.3 From cffa9954908830276c93b430681f66cc0e599aef Mon Sep 17 00:00:00 2001 From: Alvin Chang Date: Thu, 7 Sep 2023 16:45:00 +0800 Subject: disas/riscv: Fix the typo of inverted order of pmpaddr13 and pmpaddr14 Fix the inverted order of pmpaddr13 and pmpaddr14 in csr_name(). Signed-off-by: Alvin Chang Reviewed-by: Alistair Francis Message-ID: <20230907084500.328-1-alvinga@andestech.com> Signed-off-by: Alistair Francis --- disas/riscv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/disas/riscv.c b/disas/riscv.c index 3873a69157..8e89e1d115 100644 --- a/disas/riscv.c +++ b/disas/riscv.c @@ -2116,8 +2116,8 @@ static const char *csr_name(int csrno) case 0x03ba: return "pmpaddr10"; case 0x03bb: return "pmpaddr11"; case 0x03bc: return "pmpaddr12"; - case 0x03bd: return "pmpaddr14"; - case 0x03be: return "pmpaddr13"; + case 0x03bd: return "pmpaddr13"; + case 0x03be: return "pmpaddr14"; case 0x03bf: return "pmpaddr15"; case 0x0780: return "mtohost"; case 0x0781: return "mfromhost"; -- cgit v1.2.3 From 9c5180d7998b8e211ec038e5342b305e78e06e22 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:51 -0300 Subject: target/riscv: introduce TCG AccelCPUClass target/riscv/cpu.c needs to handle all possible accelerators (TCG and KVM at this moment) during both init() and realize() time. This forces us to resort to a lot of "if tcg" and "if kvm" throughout the code, which isn't wrong, but can get cluttered over time. Splitting acceleration specific code from cpu.c to its own file will help to declutter the existing code and it will also make it easier to support KVM/TCG only builds in the future. We'll start by adding a new subdir called 'tcg' and a new file called 'tcg-cpu.c'. This file will be used to introduce a new accelerator class for TCG acceleration in RISC-V, allowing us to center all TCG exclusive code in its file instead of using 'cpu.c' for everything. This design is inpired by the work Claudio Fontana did in x86 a few years ago in commit f5cc5a5c1 ("i386: split cpu accelerators from cpu.c, using AccelCPUClass"). To avoid moving too much code at once we'll start by adding the new file and TCG AccelCPUClass declaration. The 'class_init' from the accel class will init 'tcg_ops', relieving the common riscv_cpu_class_init() from doing it. 'riscv_tcg_ops' is being exported from 'cpu.c' for now to avoid having to deal with moving code and files around right now. We'll focus on decoupling the realize() logic first. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-2-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 5 +--- target/riscv/cpu.h | 4 +++ target/riscv/meson.build | 2 ++ target/riscv/tcg/meson.build | 2 ++ target/riscv/tcg/tcg-cpu.c | 58 ++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 67 insertions(+), 4 deletions(-) create mode 100644 target/riscv/tcg/meson.build create mode 100644 target/riscv/tcg/tcg-cpu.c diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 383e5df2a7..89ce316294 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -2284,9 +2284,7 @@ static const struct SysemuCPUOps riscv_sysemu_ops = { }; #endif -#include "hw/core/tcg-cpu-ops.h" - -static const struct TCGCPUOps riscv_tcg_ops = { +const struct TCGCPUOps riscv_tcg_ops = { .initialize = riscv_translate_init, .synchronize_from_tb = riscv_cpu_synchronize_from_tb, .restore_state_to_opc = riscv_restore_state_to_opc, @@ -2445,7 +2443,6 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data) #endif cc->gdb_arch_name = riscv_gdb_arch_name; cc->gdb_get_dynamic_xml = riscv_gdb_get_dynamic_xml; - cc->tcg_ops = &riscv_tcg_ops; object_class_property_add(c, "mvendorid", "uint32", cpu_get_mvendorid, cpu_set_mvendorid, NULL, NULL); diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index cce6dee729..1bd736a1a0 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -707,6 +707,10 @@ enum riscv_pmu_event_idx { RISCV_PMU_EVENT_CACHE_ITLB_PREFETCH_MISS = 0x10021, }; +/* Export tcg_ops until we move everything to tcg/tcg-cpu.c */ +#include "hw/core/tcg-cpu-ops.h" +extern const struct TCGCPUOps riscv_tcg_ops; + /* CSR function table */ extern riscv_csr_operations csr_ops[CSR_TABLE_SIZE]; diff --git a/target/riscv/meson.build b/target/riscv/meson.build index ff60b21d04..b4ded65e41 100644 --- a/target/riscv/meson.build +++ b/target/riscv/meson.build @@ -38,5 +38,7 @@ riscv_system_ss.add(files( 'riscv-qmp-cmds.c', )) +subdir('tcg') + target_arch += {'riscv': riscv_ss} target_system_arch += {'riscv': riscv_system_ss} diff --git a/target/riscv/tcg/meson.build b/target/riscv/tcg/meson.build new file mode 100644 index 0000000000..061df3d74a --- /dev/null +++ b/target/riscv/tcg/meson.build @@ -0,0 +1,2 @@ +riscv_ss.add(when: 'CONFIG_TCG', if_true: files( + 'tcg-cpu.c')) diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c new file mode 100644 index 0000000000..795a8f06b2 --- /dev/null +++ b/target/riscv/tcg/tcg-cpu.c @@ -0,0 +1,58 @@ +/* + * riscv TCG cpu class initialization + * + * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu + * Copyright (c) 2017-2018 SiFive, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "qemu/accel.h" +#include "hw/core/accel-cpu.h" + +static void tcg_cpu_init_ops(AccelCPUClass *accel_cpu, CPUClass *cc) +{ + /* + * All cpus use the same set of operations. + * riscv_tcg_ops is being imported from cpu.c for now. + */ + cc->tcg_ops = &riscv_tcg_ops; +} + +static void tcg_cpu_class_init(CPUClass *cc) +{ + cc->init_accel_cpu = tcg_cpu_init_ops; +} + +static void tcg_cpu_accel_class_init(ObjectClass *oc, void *data) +{ + AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); + + acc->cpu_class_init = tcg_cpu_class_init; +} + +static const TypeInfo tcg_cpu_accel_type_info = { + .name = ACCEL_CPU_NAME("tcg"), + + .parent = TYPE_ACCEL_CPU, + .class_init = tcg_cpu_accel_class_init, + .abstract = true, +}; + +static void tcg_cpu_accel_register_types(void) +{ + type_register_static(&tcg_cpu_accel_type_info); +} +type_init(tcg_cpu_accel_register_types); -- cgit v1.2.3 From 9dcecbd724ebadd8c957356e629aab9d724e9889 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:52 -0300 Subject: target/riscv: move riscv_cpu_realize_tcg() to TCG::cpu_realizefn() riscv_cpu_realize_tcg() was added to allow TCG cpus to have a different realize() path during the common riscv_cpu_realize(), making it a good choice to start moving TCG exclusive code to tcg-cpu.c. Rename it to tcg_cpu_realizefn() and assign it as a implementation of accel::cpu_realizefn(). tcg_cpu_realizefn() will then be called during riscv_cpu_realize() via cpu_exec_realizefn(). We'll use a similar approach with KVM in the near future. riscv_cpu_validate_set_extensions() is too big and with too many dependencies to be moved in this same patch. We'll do that next. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Message-ID: <20230925175709.35696-3-dbarboza@ventanamicro.com> [ Changes by AF: - Renames to fix build failures after rebase ] Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 128 ------------------------------------------- target/riscv/tcg/tcg-cpu.c | 133 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 133 insertions(+), 128 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 89ce316294..11f57c1f32 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -23,9 +23,7 @@ #include "qemu/log.h" #include "cpu.h" #include "cpu_vendorid.h" -#include "pmu.h" #include "internals.h" -#include "time_helper.h" #include "exec/exec-all.h" #include "qapi/error.h" #include "qapi/visitor.h" @@ -1064,29 +1062,6 @@ static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg, } } -static void riscv_cpu_validate_priv_spec(RISCVCPU *cpu, Error **errp) -{ - CPURISCVState *env = &cpu->env; - int priv_version = -1; - - if (cpu->cfg.priv_spec) { - if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) { - priv_version = PRIV_VERSION_1_12_0; - } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { - priv_version = PRIV_VERSION_1_11_0; - } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) { - priv_version = PRIV_VERSION_1_10_0; - } else { - error_setg(errp, - "Unsupported privilege spec version '%s'", - cpu->cfg.priv_spec); - return; - } - - env->priv_ver = priv_version; - } -} - static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) { CPURISCVState *env = &cpu->env; @@ -1111,33 +1086,6 @@ static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) } } -static void riscv_cpu_validate_misa_mxl(RISCVCPU *cpu, Error **errp) -{ - RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu); - CPUClass *cc = CPU_CLASS(mcc); - CPURISCVState *env = &cpu->env; - - /* Validate that MISA_MXL is set properly. */ - switch (env->misa_mxl_max) { -#ifdef TARGET_RISCV64 - case MXL_RV64: - case MXL_RV128: - cc->gdb_core_xml_file = "riscv-64bit-cpu.xml"; - break; -#endif - case MXL_RV32: - cc->gdb_core_xml_file = "riscv-32bit-cpu.xml"; - break; - default: - g_assert_not_reached(); - } - - if (env->misa_mxl_max != env->misa_mxl) { - error_setg(errp, "misa_mxl_max must be equal to misa_mxl"); - return; - } -} - /* * Check consistency between chosen extensions while setting * cpu->cfg accordingly. @@ -1511,74 +1459,6 @@ static void riscv_cpu_finalize_features(RISCVCPU *cpu, Error **errp) #endif } -static void riscv_cpu_validate_misa_priv(CPURISCVState *env, Error **errp) -{ - if (riscv_has_ext(env, RVH) && env->priv_ver < PRIV_VERSION_1_12_0) { - error_setg(errp, "H extension requires priv spec 1.12.0"); - return; - } -} - -static void riscv_cpu_realize_tcg(DeviceState *dev, Error **errp) -{ - RISCVCPU *cpu = RISCV_CPU(dev); - CPURISCVState *env = &cpu->env; - Error *local_err = NULL; - - if (object_dynamic_cast(OBJECT(dev), TYPE_RISCV_CPU_HOST)) { - error_setg(errp, "'host' CPU is not compatible with TCG acceleration"); - return; - } - - riscv_cpu_validate_misa_mxl(cpu, &local_err); - if (local_err != NULL) { - error_propagate(errp, local_err); - return; - } - - riscv_cpu_validate_priv_spec(cpu, &local_err); - if (local_err != NULL) { - error_propagate(errp, local_err); - return; - } - - riscv_cpu_validate_misa_priv(env, &local_err); - if (local_err != NULL) { - error_propagate(errp, local_err); - return; - } - - if (cpu->cfg.epmp && !cpu->cfg.pmp) { - /* - * Enhanced PMP should only be available - * on harts with PMP support - */ - error_setg(errp, "Invalid configuration: EPMP requires PMP support"); - return; - } - - riscv_cpu_validate_set_extensions(cpu, &local_err); - if (local_err != NULL) { - error_propagate(errp, local_err); - return; - } - -#ifndef CONFIG_USER_ONLY - CPU(dev)->tcg_cflags |= CF_PCREL; - - if (cpu->cfg.ext_sstc) { - riscv_timer_init(cpu); - } - - if (cpu->cfg.pmu_num) { - if (!riscv_pmu_init(cpu, cpu->cfg.pmu_num) && cpu->cfg.ext_sscofpmf) { - cpu->pmu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, - riscv_pmu_timer_cb, cpu); - } - } -#endif -} - static void riscv_cpu_realize(DeviceState *dev, Error **errp) { CPUState *cs = CPU(dev); @@ -1597,14 +1477,6 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) return; } - if (tcg_enabled()) { - riscv_cpu_realize_tcg(dev, &local_err); - if (local_err != NULL) { - error_propagate(errp, local_err); - return; - } - } - riscv_cpu_finalize_features(cpu, &local_err); if (local_err != NULL) { error_propagate(errp, local_err); diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 795a8f06b2..fe7e03594d 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -18,10 +18,142 @@ */ #include "qemu/osdep.h" +#include "exec/exec-all.h" #include "cpu.h" +#include "pmu.h" +#include "time_helper.h" +#include "qapi/error.h" #include "qemu/accel.h" #include "hw/core/accel-cpu.h" + +static void riscv_cpu_validate_misa_priv(CPURISCVState *env, Error **errp) +{ + if (riscv_has_ext(env, RVH) && env->priv_ver < PRIV_VERSION_1_12_0) { + error_setg(errp, "H extension requires priv spec 1.12.0"); + return; + } +} + +static void riscv_cpu_validate_misa_mxl(RISCVCPU *cpu, Error **errp) +{ + RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(cpu); + CPUClass *cc = CPU_CLASS(mcc); + CPURISCVState *env = &cpu->env; + + /* Validate that MISA_MXL is set properly. */ + switch (env->misa_mxl_max) { +#ifdef TARGET_RISCV64 + case MXL_RV64: + case MXL_RV128: + cc->gdb_core_xml_file = "riscv-64bit-cpu.xml"; + break; +#endif + case MXL_RV32: + cc->gdb_core_xml_file = "riscv-32bit-cpu.xml"; + break; + default: + g_assert_not_reached(); + } + + if (env->misa_mxl_max != env->misa_mxl) { + error_setg(errp, "misa_mxl_max must be equal to misa_mxl"); + return; + } +} + +static void riscv_cpu_validate_priv_spec(RISCVCPU *cpu, Error **errp) +{ + CPURISCVState *env = &cpu->env; + int priv_version = -1; + + if (cpu->cfg.priv_spec) { + if (!g_strcmp0(cpu->cfg.priv_spec, "v1.12.0")) { + priv_version = PRIV_VERSION_1_12_0; + } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.11.0")) { + priv_version = PRIV_VERSION_1_11_0; + } else if (!g_strcmp0(cpu->cfg.priv_spec, "v1.10.0")) { + priv_version = PRIV_VERSION_1_10_0; + } else { + error_setg(errp, + "Unsupported privilege spec version '%s'", + cpu->cfg.priv_spec); + return; + } + + env->priv_ver = priv_version; + } +} + +/* + * We'll get here via the following path: + * + * riscv_cpu_realize() + * -> cpu_exec_realizefn() + * -> tcg_cpu_realize() (via accel_cpu_common_realize()) + */ +static bool tcg_cpu_realize(CPUState *cs, Error **errp) +{ + RISCVCPU *cpu = RISCV_CPU(cs); + CPURISCVState *env = &cpu->env; + Error *local_err = NULL; + + if (object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_CPU_HOST)) { + error_setg(errp, "'host' CPU is not compatible with TCG acceleration"); + return false; + } + + riscv_cpu_validate_misa_mxl(cpu, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return false; + } + + riscv_cpu_validate_priv_spec(cpu, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return false; + } + + riscv_cpu_validate_misa_priv(env, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return false; + } + + if (cpu->cfg.epmp && !cpu->cfg.pmp) { + /* + * Enhanced PMP should only be available + * on harts with PMP support + */ + error_setg(errp, "Invalid configuration: EPMP requires PMP support"); + return false; + } + + riscv_cpu_validate_set_extensions(cpu, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return false; + } + +#ifndef CONFIG_USER_ONLY + CPU(cs)->tcg_cflags |= CF_PCREL; + + if (cpu->cfg.ext_sstc) { + riscv_timer_init(cpu); + } + + if (cpu->cfg.pmu_num) { + if (!riscv_pmu_init(cpu, cpu->cfg.pmu_num) && cpu->cfg.ext_sscofpmf) { + cpu->pmu_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, + riscv_pmu_timer_cb, cpu); + } + } +#endif + + return true; +} + static void tcg_cpu_init_ops(AccelCPUClass *accel_cpu, CPUClass *cc) { /* @@ -41,6 +173,7 @@ static void tcg_cpu_accel_class_init(ObjectClass *oc, void *data) AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); acc->cpu_class_init = tcg_cpu_class_init; + acc->cpu_target_realize = tcg_cpu_realize; } static const TypeInfo tcg_cpu_accel_type_info = { -- cgit v1.2.3 From 36c1118d500b95d26d1f07deb93402f9d596cabf Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:53 -0300 Subject: target/riscv: move riscv_cpu_validate_set_extensions() to tcg-cpu.c This function is the core of the RISC-V validations for TCG CPUs, and it has a lot going on. Functions in cpu.c were made public to allow them to be used by the KVM accelerator class later on. 'cpu_cfg_ext_get_min_version()' is notably hard to move it to another file due to its dependency with isa_edata_arr[] array, thus make it public and use it as is for now. riscv_cpu_validate_set_extensions() is kept public because it's used by csr.c in write_misa(). Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-4-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 361 +-------------------------------------------- target/riscv/cpu.h | 8 +- target/riscv/csr.c | 1 + target/riscv/tcg/tcg-cpu.c | 357 ++++++++++++++++++++++++++++++++++++++++++++ target/riscv/tcg/tcg-cpu.h | 27 ++++ 5 files changed, 397 insertions(+), 357 deletions(-) create mode 100644 target/riscv/tcg/tcg-cpu.h diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 11f57c1f32..943aca2c20 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -163,22 +163,21 @@ static const struct isa_ext_data isa_edata_arr[] = { /* Hash that stores user set extensions */ static GHashTable *multi_ext_user_opts; -static bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset) +bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset) { bool *ext_enabled = (void *)&cpu->cfg + ext_offset; return *ext_enabled; } -static void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, - bool en) +void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en) { bool *ext_enabled = (void *)&cpu->cfg + ext_offset; *ext_enabled = en; } -static int cpu_cfg_ext_get_min_version(uint32_t ext_offset) +int cpu_cfg_ext_get_min_version(uint32_t ext_offset) { int i; @@ -193,38 +192,12 @@ static int cpu_cfg_ext_get_min_version(uint32_t ext_offset) g_assert_not_reached(); } -static bool cpu_cfg_ext_is_user_set(uint32_t ext_offset) +bool cpu_cfg_ext_is_user_set(uint32_t ext_offset) { return g_hash_table_contains(multi_ext_user_opts, GUINT_TO_POINTER(ext_offset)); } -static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, - bool value) -{ - CPURISCVState *env = &cpu->env; - bool prev_val = isa_ext_is_enabled(cpu, ext_offset); - int min_version; - - if (prev_val == value) { - return; - } - - if (cpu_cfg_ext_is_user_set(ext_offset)) { - return; - } - - if (value && env->priv_ver != PRIV_VERSION_LATEST) { - /* Do not enable it if priv_ver is older than min_version */ - min_version = cpu_cfg_ext_get_min_version(ext_offset); - if (env->priv_ver < min_version) { - return; - } - } - - isa_ext_update_enabled(cpu, ext_offset, value); -} - const char * const riscv_int_regnames[] = { "x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1", "x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3", @@ -1023,46 +996,7 @@ static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) } } -static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg, - Error **errp) -{ - if (!is_power_of_2(cfg->vlen)) { - error_setg(errp, "Vector extension VLEN must be power of 2"); - return; - } - if (cfg->vlen > RV_VLEN_MAX || cfg->vlen < 128) { - error_setg(errp, - "Vector extension implementation only supports VLEN " - "in the range [128, %d]", RV_VLEN_MAX); - return; - } - if (!is_power_of_2(cfg->elen)) { - error_setg(errp, "Vector extension ELEN must be power of 2"); - return; - } - if (cfg->elen > 64 || cfg->elen < 8) { - error_setg(errp, - "Vector extension implementation only supports ELEN " - "in the range [8, 64]"); - return; - } - if (cfg->vext_spec) { - if (!g_strcmp0(cfg->vext_spec, "v1.0")) { - env->vext_ver = VEXT_VERSION_1_00_0; - } else { - error_setg(errp, "Unsupported vector spec version '%s'", - cfg->vext_spec); - return; - } - } else if (env->vext_ver == 0) { - qemu_log("vector version is not specified, " - "use the default value v1.0\n"); - - env->vext_ver = VEXT_VERSION_1_00_0; - } -} - -static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) +void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) { CPURISCVState *env = &cpu->env; int i; @@ -1086,291 +1020,6 @@ static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) } } -/* - * Check consistency between chosen extensions while setting - * cpu->cfg accordingly. - */ -void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) -{ - CPURISCVState *env = &cpu->env; - Error *local_err = NULL; - - /* Do some ISA extension error checking */ - if (riscv_has_ext(env, RVG) && - !(riscv_has_ext(env, RVI) && riscv_has_ext(env, RVM) && - riscv_has_ext(env, RVA) && riscv_has_ext(env, RVF) && - riscv_has_ext(env, RVD) && - cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) { - - if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_icsr)) && - !cpu->cfg.ext_icsr) { - error_setg(errp, "RVG requires Zicsr but user set Zicsr to false"); - return; - } - - if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_ifencei)) && - !cpu->cfg.ext_ifencei) { - error_setg(errp, "RVG requires Zifencei but user set " - "Zifencei to false"); - return; - } - - warn_report("Setting G will also set IMAFD_Zicsr_Zifencei"); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_icsr), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_ifencei), true); - - env->misa_ext |= RVI | RVM | RVA | RVF | RVD; - env->misa_ext_mask |= RVI | RVM | RVA | RVF | RVD; - } - - if (riscv_has_ext(env, RVI) && riscv_has_ext(env, RVE)) { - error_setg(errp, - "I and E extensions are incompatible"); - return; - } - - if (!riscv_has_ext(env, RVI) && !riscv_has_ext(env, RVE)) { - error_setg(errp, - "Either I or E extension must be set"); - return; - } - - if (riscv_has_ext(env, RVS) && !riscv_has_ext(env, RVU)) { - error_setg(errp, - "Setting S extension without U extension is illegal"); - return; - } - - if (riscv_has_ext(env, RVH) && !riscv_has_ext(env, RVI)) { - error_setg(errp, - "H depends on an I base integer ISA with 32 x registers"); - return; - } - - if (riscv_has_ext(env, RVH) && !riscv_has_ext(env, RVS)) { - error_setg(errp, "H extension implicitly requires S-mode"); - return; - } - - if (riscv_has_ext(env, RVF) && !cpu->cfg.ext_icsr) { - error_setg(errp, "F extension requires Zicsr"); - return; - } - - if ((cpu->cfg.ext_zawrs) && !riscv_has_ext(env, RVA)) { - error_setg(errp, "Zawrs extension requires A extension"); - return; - } - - if (cpu->cfg.ext_zfa && !riscv_has_ext(env, RVF)) { - error_setg(errp, "Zfa extension requires F extension"); - return; - } - - if (cpu->cfg.ext_zfh) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zfhmin), true); - } - - if (cpu->cfg.ext_zfhmin && !riscv_has_ext(env, RVF)) { - error_setg(errp, "Zfh/Zfhmin extensions require F extension"); - return; - } - - if (cpu->cfg.ext_zfbfmin && !riscv_has_ext(env, RVF)) { - error_setg(errp, "Zfbfmin extension depends on F extension"); - return; - } - - if (riscv_has_ext(env, RVD) && !riscv_has_ext(env, RVF)) { - error_setg(errp, "D extension requires F extension"); - return; - } - - if (riscv_has_ext(env, RVV)) { - riscv_cpu_validate_v(env, &cpu->cfg, &local_err); - if (local_err != NULL) { - error_propagate(errp, local_err); - return; - } - - /* The V vector extension depends on the Zve64d extension */ - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve64d), true); - } - - /* The Zve64d extension depends on the Zve64f extension */ - if (cpu->cfg.ext_zve64d) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve64f), true); - } - - /* The Zve64f extension depends on the Zve32f extension */ - if (cpu->cfg.ext_zve64f) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve32f), true); - } - - if (cpu->cfg.ext_zve64d && !riscv_has_ext(env, RVD)) { - error_setg(errp, "Zve64d/V extensions require D extension"); - return; - } - - if (cpu->cfg.ext_zve32f && !riscv_has_ext(env, RVF)) { - error_setg(errp, "Zve32f/Zve64f extensions require F extension"); - return; - } - - if (cpu->cfg.ext_zvfh) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvfhmin), true); - } - - if (cpu->cfg.ext_zvfhmin && !cpu->cfg.ext_zve32f) { - error_setg(errp, "Zvfh/Zvfhmin extensions require Zve32f extension"); - return; - } - - if (cpu->cfg.ext_zvfh && !cpu->cfg.ext_zfhmin) { - error_setg(errp, "Zvfh extensions requires Zfhmin extension"); - return; - } - - if (cpu->cfg.ext_zvfbfmin && !cpu->cfg.ext_zfbfmin) { - error_setg(errp, "Zvfbfmin extension depends on Zfbfmin extension"); - return; - } - - if (cpu->cfg.ext_zvfbfmin && !cpu->cfg.ext_zve32f) { - error_setg(errp, "Zvfbfmin extension depends on Zve32f extension"); - return; - } - - if (cpu->cfg.ext_zvfbfwma && !cpu->cfg.ext_zvfbfmin) { - error_setg(errp, "Zvfbfwma extension depends on Zvfbfmin extension"); - return; - } - - /* Set the ISA extensions, checks should have happened above */ - if (cpu->cfg.ext_zhinx) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); - } - - if ((cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinxmin) && !cpu->cfg.ext_zfinx) { - error_setg(errp, "Zdinx/Zhinx/Zhinxmin extensions require Zfinx"); - return; - } - - if (cpu->cfg.ext_zfinx) { - if (!cpu->cfg.ext_icsr) { - error_setg(errp, "Zfinx extension requires Zicsr"); - return; - } - if (riscv_has_ext(env, RVF)) { - error_setg(errp, - "Zfinx cannot be supported together with F extension"); - return; - } - } - - if (cpu->cfg.ext_zce) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcb), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmp), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmt), true); - if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); - } - } - - /* zca, zcd and zcf has a PRIV 1.12.0 restriction */ - if (riscv_has_ext(env, RVC) && env->priv_ver >= PRIV_VERSION_1_12_0) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); - if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); - } - if (riscv_has_ext(env, RVD)) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcd), true); - } - } - - if (env->misa_mxl_max != MXL_RV32 && cpu->cfg.ext_zcf) { - error_setg(errp, "Zcf extension is only relevant to RV32"); - return; - } - - if (!riscv_has_ext(env, RVF) && cpu->cfg.ext_zcf) { - error_setg(errp, "Zcf extension requires F extension"); - return; - } - - if (!riscv_has_ext(env, RVD) && cpu->cfg.ext_zcd) { - error_setg(errp, "Zcd extension requires D extension"); - return; - } - - if ((cpu->cfg.ext_zcf || cpu->cfg.ext_zcd || cpu->cfg.ext_zcb || - cpu->cfg.ext_zcmp || cpu->cfg.ext_zcmt) && !cpu->cfg.ext_zca) { - error_setg(errp, "Zcf/Zcd/Zcb/Zcmp/Zcmt extensions require Zca " - "extension"); - return; - } - - if (cpu->cfg.ext_zcd && (cpu->cfg.ext_zcmp || cpu->cfg.ext_zcmt)) { - error_setg(errp, "Zcmp/Zcmt extensions are incompatible with " - "Zcd extension"); - return; - } - - if (cpu->cfg.ext_zcmt && !cpu->cfg.ext_icsr) { - error_setg(errp, "Zcmt extension requires Zicsr extension"); - return; - } - - /* - * In principle Zve*x would also suffice here, were they supported - * in qemu - */ - if ((cpu->cfg.ext_zvbb || cpu->cfg.ext_zvkg || cpu->cfg.ext_zvkned || - cpu->cfg.ext_zvknha || cpu->cfg.ext_zvksed || cpu->cfg.ext_zvksh) && - !cpu->cfg.ext_zve32f) { - error_setg(errp, - "Vector crypto extensions require V or Zve* extensions"); - return; - } - - if ((cpu->cfg.ext_zvbc || cpu->cfg.ext_zvknhb) && !cpu->cfg.ext_zve64f) { - error_setg( - errp, - "Zvbc and Zvknhb extensions require V or Zve64{f,d} extensions"); - return; - } - - if (cpu->cfg.ext_zk) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkn), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkr), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkt), true); - } - - if (cpu->cfg.ext_zkn) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkb), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkc), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkx), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkne), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zknd), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zknh), true); - } - - if (cpu->cfg.ext_zks) { - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkb), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkc), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkx), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zksed), true); - cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zksh), true); - } - - /* - * Disable isa extensions based on priv spec after we - * validated and set everything we need. - */ - riscv_cpu_disable_priv_spec_isa_exts(cpu); -} - #ifndef CONFIG_USER_ONLY static void riscv_cpu_satp_mode_finalize(RISCVCPU *cpu, Error **errp) { diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 1bd736a1a0..e1e47d7509 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -445,7 +445,6 @@ bool riscv_cpu_tlb_fill(CPUState *cs, vaddr address, int size, bool probe, uintptr_t retaddr); char *riscv_isa_string(RISCVCPU *cpu); void riscv_cpu_list(void); -void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp); #define cpu_list riscv_cpu_list #define cpu_mmu_index riscv_cpu_mmu_index @@ -711,6 +710,13 @@ enum riscv_pmu_event_idx { #include "hw/core/tcg-cpu-ops.h" extern const struct TCGCPUOps riscv_tcg_ops; +/* used by tcg/tcg-cpu.c*/ +void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en); +bool cpu_cfg_ext_is_user_set(uint32_t ext_offset); +bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset); +int cpu_cfg_ext_get_min_version(uint32_t ext_offset); +void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu); + /* CSR function table */ extern riscv_csr_operations csr_ops[CSR_TABLE_SIZE]; diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 85a31dc420..4b4ab56c40 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -21,6 +21,7 @@ #include "qemu/log.h" #include "qemu/timer.h" #include "cpu.h" +#include "tcg/tcg-cpu.h" #include "pmu.h" #include "time_helper.h" #include "exec/exec-all.h" diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index fe7e03594d..0ea691fbba 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -19,14 +19,43 @@ #include "qemu/osdep.h" #include "exec/exec-all.h" +#include "tcg-cpu.h" #include "cpu.h" #include "pmu.h" #include "time_helper.h" #include "qapi/error.h" #include "qemu/accel.h" +#include "qemu/error-report.h" +#include "qemu/log.h" #include "hw/core/accel-cpu.h" +static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, + bool value) +{ + CPURISCVState *env = &cpu->env; + bool prev_val = isa_ext_is_enabled(cpu, ext_offset); + int min_version; + + if (prev_val == value) { + return; + } + + if (cpu_cfg_ext_is_user_set(ext_offset)) { + return; + } + + if (value && env->priv_ver != PRIV_VERSION_LATEST) { + /* Do not enable it if priv_ver is older than min_version */ + min_version = cpu_cfg_ext_get_min_version(ext_offset); + if (env->priv_ver < min_version) { + return; + } + } + + isa_ext_update_enabled(cpu, ext_offset, value); +} + static void riscv_cpu_validate_misa_priv(CPURISCVState *env, Error **errp) { if (riscv_has_ext(env, RVH) && env->priv_ver < PRIV_VERSION_1_12_0) { @@ -85,6 +114,334 @@ static void riscv_cpu_validate_priv_spec(RISCVCPU *cpu, Error **errp) } } +static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg, + Error **errp) +{ + if (!is_power_of_2(cfg->vlen)) { + error_setg(errp, "Vector extension VLEN must be power of 2"); + return; + } + + if (cfg->vlen > RV_VLEN_MAX || cfg->vlen < 128) { + error_setg(errp, + "Vector extension implementation only supports VLEN " + "in the range [128, %d]", RV_VLEN_MAX); + return; + } + + if (!is_power_of_2(cfg->elen)) { + error_setg(errp, "Vector extension ELEN must be power of 2"); + return; + } + + if (cfg->elen > 64 || cfg->elen < 8) { + error_setg(errp, + "Vector extension implementation only supports ELEN " + "in the range [8, 64]"); + return; + } + + if (cfg->vext_spec) { + if (!g_strcmp0(cfg->vext_spec, "v1.0")) { + env->vext_ver = VEXT_VERSION_1_00_0; + } else { + error_setg(errp, "Unsupported vector spec version '%s'", + cfg->vext_spec); + return; + } + } else if (env->vext_ver == 0) { + qemu_log("vector version is not specified, " + "use the default value v1.0\n"); + + env->vext_ver = VEXT_VERSION_1_00_0; + } +} + +/* + * Check consistency between chosen extensions while setting + * cpu->cfg accordingly. + */ +void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) +{ + CPURISCVState *env = &cpu->env; + Error *local_err = NULL; + + /* Do some ISA extension error checking */ + if (riscv_has_ext(env, RVG) && + !(riscv_has_ext(env, RVI) && riscv_has_ext(env, RVM) && + riscv_has_ext(env, RVA) && riscv_has_ext(env, RVF) && + riscv_has_ext(env, RVD) && + cpu->cfg.ext_icsr && cpu->cfg.ext_ifencei)) { + + if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_icsr)) && + !cpu->cfg.ext_icsr) { + error_setg(errp, "RVG requires Zicsr but user set Zicsr to false"); + return; + } + + if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_ifencei)) && + !cpu->cfg.ext_ifencei) { + error_setg(errp, "RVG requires Zifencei but user set " + "Zifencei to false"); + return; + } + + warn_report("Setting G will also set IMAFD_Zicsr_Zifencei"); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_icsr), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_ifencei), true); + + env->misa_ext |= RVI | RVM | RVA | RVF | RVD; + env->misa_ext_mask |= RVI | RVM | RVA | RVF | RVD; + } + + if (riscv_has_ext(env, RVI) && riscv_has_ext(env, RVE)) { + error_setg(errp, + "I and E extensions are incompatible"); + return; + } + + if (!riscv_has_ext(env, RVI) && !riscv_has_ext(env, RVE)) { + error_setg(errp, + "Either I or E extension must be set"); + return; + } + + if (riscv_has_ext(env, RVS) && !riscv_has_ext(env, RVU)) { + error_setg(errp, + "Setting S extension without U extension is illegal"); + return; + } + + if (riscv_has_ext(env, RVH) && !riscv_has_ext(env, RVI)) { + error_setg(errp, + "H depends on an I base integer ISA with 32 x registers"); + return; + } + + if (riscv_has_ext(env, RVH) && !riscv_has_ext(env, RVS)) { + error_setg(errp, "H extension implicitly requires S-mode"); + return; + } + + if (riscv_has_ext(env, RVF) && !cpu->cfg.ext_icsr) { + error_setg(errp, "F extension requires Zicsr"); + return; + } + + if ((cpu->cfg.ext_zawrs) && !riscv_has_ext(env, RVA)) { + error_setg(errp, "Zawrs extension requires A extension"); + return; + } + + if (cpu->cfg.ext_zfa && !riscv_has_ext(env, RVF)) { + error_setg(errp, "Zfa extension requires F extension"); + return; + } + + if (cpu->cfg.ext_zfh) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zfhmin), true); + } + + if (cpu->cfg.ext_zfhmin && !riscv_has_ext(env, RVF)) { + error_setg(errp, "Zfh/Zfhmin extensions require F extension"); + return; + } + + if (cpu->cfg.ext_zfbfmin && !riscv_has_ext(env, RVF)) { + error_setg(errp, "Zfbfmin extension depends on F extension"); + return; + } + + if (riscv_has_ext(env, RVD) && !riscv_has_ext(env, RVF)) { + error_setg(errp, "D extension requires F extension"); + return; + } + + if (riscv_has_ext(env, RVV)) { + riscv_cpu_validate_v(env, &cpu->cfg, &local_err); + if (local_err != NULL) { + error_propagate(errp, local_err); + return; + } + + /* The V vector extension depends on the Zve64d extension */ + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve64d), true); + } + + /* The Zve64d extension depends on the Zve64f extension */ + if (cpu->cfg.ext_zve64d) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve64f), true); + } + + /* The Zve64f extension depends on the Zve32f extension */ + if (cpu->cfg.ext_zve64f) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zve32f), true); + } + + if (cpu->cfg.ext_zve64d && !riscv_has_ext(env, RVD)) { + error_setg(errp, "Zve64d/V extensions require D extension"); + return; + } + + if (cpu->cfg.ext_zve32f && !riscv_has_ext(env, RVF)) { + error_setg(errp, "Zve32f/Zve64f extensions require F extension"); + return; + } + + if (cpu->cfg.ext_zvfh) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zvfhmin), true); + } + + if (cpu->cfg.ext_zvfhmin && !cpu->cfg.ext_zve32f) { + error_setg(errp, "Zvfh/Zvfhmin extensions require Zve32f extension"); + return; + } + + if (cpu->cfg.ext_zvfh && !cpu->cfg.ext_zfhmin) { + error_setg(errp, "Zvfh extensions requires Zfhmin extension"); + return; + } + + if (cpu->cfg.ext_zvfbfmin && !cpu->cfg.ext_zfbfmin) { + error_setg(errp, "Zvfbfmin extension depends on Zfbfmin extension"); + return; + } + + if (cpu->cfg.ext_zvfbfmin && !cpu->cfg.ext_zve32f) { + error_setg(errp, "Zvfbfmin extension depends on Zve32f extension"); + return; + } + + if (cpu->cfg.ext_zvfbfwma && !cpu->cfg.ext_zvfbfmin) { + error_setg(errp, "Zvfbfwma extension depends on Zvfbfmin extension"); + return; + } + + /* Set the ISA extensions, checks should have happened above */ + if (cpu->cfg.ext_zhinx) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); + } + + if ((cpu->cfg.ext_zdinx || cpu->cfg.ext_zhinxmin) && !cpu->cfg.ext_zfinx) { + error_setg(errp, "Zdinx/Zhinx/Zhinxmin extensions require Zfinx"); + return; + } + + if (cpu->cfg.ext_zfinx) { + if (!cpu->cfg.ext_icsr) { + error_setg(errp, "Zfinx extension requires Zicsr"); + return; + } + if (riscv_has_ext(env, RVF)) { + error_setg(errp, + "Zfinx cannot be supported together with F extension"); + return; + } + } + + if (cpu->cfg.ext_zce) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcb), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmp), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcmt), true); + if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); + } + } + + /* zca, zcd and zcf has a PRIV 1.12.0 restriction */ + if (riscv_has_ext(env, RVC) && env->priv_ver >= PRIV_VERSION_1_12_0) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zca), true); + if (riscv_has_ext(env, RVF) && env->misa_mxl_max == MXL_RV32) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcf), true); + } + if (riscv_has_ext(env, RVD)) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zcd), true); + } + } + + if (env->misa_mxl_max != MXL_RV32 && cpu->cfg.ext_zcf) { + error_setg(errp, "Zcf extension is only relevant to RV32"); + return; + } + + if (!riscv_has_ext(env, RVF) && cpu->cfg.ext_zcf) { + error_setg(errp, "Zcf extension requires F extension"); + return; + } + + if (!riscv_has_ext(env, RVD) && cpu->cfg.ext_zcd) { + error_setg(errp, "Zcd extension requires D extension"); + return; + } + + if ((cpu->cfg.ext_zcf || cpu->cfg.ext_zcd || cpu->cfg.ext_zcb || + cpu->cfg.ext_zcmp || cpu->cfg.ext_zcmt) && !cpu->cfg.ext_zca) { + error_setg(errp, "Zcf/Zcd/Zcb/Zcmp/Zcmt extensions require Zca " + "extension"); + return; + } + + if (cpu->cfg.ext_zcd && (cpu->cfg.ext_zcmp || cpu->cfg.ext_zcmt)) { + error_setg(errp, "Zcmp/Zcmt extensions are incompatible with " + "Zcd extension"); + return; + } + + if (cpu->cfg.ext_zcmt && !cpu->cfg.ext_icsr) { + error_setg(errp, "Zcmt extension requires Zicsr extension"); + return; + } + + /* + * In principle Zve*x would also suffice here, were they supported + * in qemu + */ + if ((cpu->cfg.ext_zvbb || cpu->cfg.ext_zvkg || cpu->cfg.ext_zvkned || + cpu->cfg.ext_zvknha || cpu->cfg.ext_zvksed || cpu->cfg.ext_zvksh) && + !cpu->cfg.ext_zve32f) { + error_setg(errp, + "Vector crypto extensions require V or Zve* extensions"); + return; + } + + if ((cpu->cfg.ext_zvbc || cpu->cfg.ext_zvknhb) && !cpu->cfg.ext_zve64f) { + error_setg( + errp, + "Zvbc and Zvknhb extensions require V or Zve64{f,d} extensions"); + return; + } + + if (cpu->cfg.ext_zk) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkn), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkr), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkt), true); + } + + if (cpu->cfg.ext_zkn) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkb), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkc), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkx), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zkne), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zknd), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zknh), true); + } + + if (cpu->cfg.ext_zks) { + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkb), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkc), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zbkx), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zksed), true); + cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_zksh), true); + } + + /* + * Disable isa extensions based on priv spec after we + * validated and set everything we need. + */ + riscv_cpu_disable_priv_spec_isa_exts(cpu); +} + /* * We'll get here via the following path: * diff --git a/target/riscv/tcg/tcg-cpu.h b/target/riscv/tcg/tcg-cpu.h new file mode 100644 index 0000000000..630184759d --- /dev/null +++ b/target/riscv/tcg/tcg-cpu.h @@ -0,0 +1,27 @@ +/* + * riscv TCG cpu class initialization + * + * Copyright (c) 2023 Ventana Micro Systems Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + */ + +#ifndef RISCV_TCG_CPU_H +#define RISCV_TCG_CPU_H + +#include "cpu.h" + +void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp); + +#endif -- cgit v1.2.3 From e7443334a87b1cc43d20daacd72db44b530b7a28 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:54 -0300 Subject: target/riscv: move riscv_tcg_ops to tcg-cpu.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move the remaining of riscv_tcg_ops now that we have a working realize() implementation. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-5-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 58 -------------------------------------------- target/riscv/cpu.h | 4 ---- target/riscv/tcg/tcg-cpu.c | 60 +++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 59 insertions(+), 63 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 943aca2c20..08cbd51ea1 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -838,24 +838,6 @@ static vaddr riscv_cpu_get_pc(CPUState *cs) return env->pc; } -static void riscv_cpu_synchronize_from_tb(CPUState *cs, - const TranslationBlock *tb) -{ - if (!(tb_cflags(tb) & CF_PCREL)) { - RISCVCPU *cpu = RISCV_CPU(cs); - CPURISCVState *env = &cpu->env; - RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL); - - tcg_debug_assert(!(cs->tcg_cflags & CF_PCREL)); - - if (xl == MXL_RV32) { - env->pc = (int32_t) tb->pc; - } else { - env->pc = tb->pc; - } - } -} - static bool riscv_cpu_has_work(CPUState *cs) { #ifndef CONFIG_USER_ONLY @@ -871,29 +853,6 @@ static bool riscv_cpu_has_work(CPUState *cs) #endif } -static void riscv_restore_state_to_opc(CPUState *cs, - const TranslationBlock *tb, - const uint64_t *data) -{ - RISCVCPU *cpu = RISCV_CPU(cs); - CPURISCVState *env = &cpu->env; - RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL); - target_ulong pc; - - if (tb_cflags(tb) & CF_PCREL) { - pc = (env->pc & TARGET_PAGE_MASK) | data[0]; - } else { - pc = data[0]; - } - - if (xl == MXL_RV32) { - env->pc = (int32_t)pc; - } else { - env->pc = pc; - } - env->bins = data[1]; -} - static void riscv_cpu_reset_hold(Object *obj) { #ifndef CONFIG_USER_ONLY @@ -1805,23 +1764,6 @@ static const struct SysemuCPUOps riscv_sysemu_ops = { }; #endif -const struct TCGCPUOps riscv_tcg_ops = { - .initialize = riscv_translate_init, - .synchronize_from_tb = riscv_cpu_synchronize_from_tb, - .restore_state_to_opc = riscv_restore_state_to_opc, - -#ifndef CONFIG_USER_ONLY - .tlb_fill = riscv_cpu_tlb_fill, - .cpu_exec_interrupt = riscv_cpu_exec_interrupt, - .do_interrupt = riscv_cpu_do_interrupt, - .do_transaction_failed = riscv_cpu_do_transaction_failed, - .do_unaligned_access = riscv_cpu_do_unaligned_access, - .debug_excp_handler = riscv_cpu_debug_excp_handler, - .debug_check_breakpoint = riscv_cpu_debug_check_breakpoint, - .debug_check_watchpoint = riscv_cpu_debug_check_watchpoint, -#endif /* !CONFIG_USER_ONLY */ -}; - static bool riscv_cpu_is_dynamic(Object *cpu_obj) { return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL; diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index e1e47d7509..3055d741c5 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -706,10 +706,6 @@ enum riscv_pmu_event_idx { RISCV_PMU_EVENT_CACHE_ITLB_PREFETCH_MISS = 0x10021, }; -/* Export tcg_ops until we move everything to tcg/tcg-cpu.c */ -#include "hw/core/tcg-cpu-ops.h" -extern const struct TCGCPUOps riscv_tcg_ops; - /* used by tcg/tcg-cpu.c*/ void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en); bool cpu_cfg_ext_is_user_set(uint32_t ext_offset); diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 0ea691fbba..c92dfc20cb 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -28,7 +28,66 @@ #include "qemu/error-report.h" #include "qemu/log.h" #include "hw/core/accel-cpu.h" +#include "hw/core/tcg-cpu-ops.h" +#include "tcg/tcg.h" +static void riscv_cpu_synchronize_from_tb(CPUState *cs, + const TranslationBlock *tb) +{ + if (!(tb_cflags(tb) & CF_PCREL)) { + RISCVCPU *cpu = RISCV_CPU(cs); + CPURISCVState *env = &cpu->env; + RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL); + + tcg_debug_assert(!(cs->tcg_cflags & CF_PCREL)); + + if (xl == MXL_RV32) { + env->pc = (int32_t) tb->pc; + } else { + env->pc = tb->pc; + } + } +} + +static void riscv_restore_state_to_opc(CPUState *cs, + const TranslationBlock *tb, + const uint64_t *data) +{ + RISCVCPU *cpu = RISCV_CPU(cs); + CPURISCVState *env = &cpu->env; + RISCVMXL xl = FIELD_EX32(tb->flags, TB_FLAGS, XL); + target_ulong pc; + + if (tb_cflags(tb) & CF_PCREL) { + pc = (env->pc & TARGET_PAGE_MASK) | data[0]; + } else { + pc = data[0]; + } + + if (xl == MXL_RV32) { + env->pc = (int32_t)pc; + } else { + env->pc = pc; + } + env->bins = data[1]; +} + +static const struct TCGCPUOps riscv_tcg_ops = { + .initialize = riscv_translate_init, + .synchronize_from_tb = riscv_cpu_synchronize_from_tb, + .restore_state_to_opc = riscv_restore_state_to_opc, + +#ifndef CONFIG_USER_ONLY + .tlb_fill = riscv_cpu_tlb_fill, + .cpu_exec_interrupt = riscv_cpu_exec_interrupt, + .do_interrupt = riscv_cpu_do_interrupt, + .do_transaction_failed = riscv_cpu_do_transaction_failed, + .do_unaligned_access = riscv_cpu_do_unaligned_access, + .debug_excp_handler = riscv_cpu_debug_excp_handler, + .debug_check_breakpoint = riscv_cpu_debug_check_breakpoint, + .debug_check_watchpoint = riscv_cpu_debug_check_watchpoint, +#endif /* !CONFIG_USER_ONLY */ +}; static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, bool value) @@ -515,7 +574,6 @@ static void tcg_cpu_init_ops(AccelCPUClass *accel_cpu, CPUClass *cc) { /* * All cpus use the same set of operations. - * riscv_tcg_ops is being imported from cpu.c for now. */ cc->tcg_ops = &riscv_tcg_ops; } -- cgit v1.2.3 From 977bbb04525682fd7a2ed8d28c0590bc2873db06 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:55 -0300 Subject: target/riscv/cpu.c: add .instance_post_init() All generic CPUs call riscv_cpu_add_user_properties(). The 'max' CPU calls riscv_init_max_cpu_extensions(). Both can be moved to a common instance_post_init() callback, implemented in riscv_cpu_post_init(), called by all CPUs. The call order then becomes: riscv_cpu_init() -> cpu_init() of each CPU -> .instance_post_init() In the near future riscv_cpu_post_init() will call the init() function of the current accelerator, providing a hook for KVM and TCG accel classes to change the init() process of the CPU. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-6-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 43 ++++++++++++++++++++++++++++++++----------- 1 file changed, 32 insertions(+), 11 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 08cbd51ea1..a6a26c0268 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -427,8 +427,6 @@ static void riscv_max_cpu_init(Object *obj) mlx = MXL_RV32; #endif set_misa(env, mlx, 0); - riscv_cpu_add_user_properties(obj); - riscv_init_max_cpu_extensions(obj); env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(RISCV_CPU(obj), mlx == MXL_RV32 ? @@ -442,7 +440,6 @@ static void rv64_base_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ set_misa(env, MXL_RV64, 0); - riscv_cpu_add_user_properties(obj); /* Set latest version of privileged specification */ env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY @@ -566,7 +563,6 @@ static void rv128_base_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ set_misa(env, MXL_RV128, 0); - riscv_cpu_add_user_properties(obj); /* Set latest version of privileged specification */ env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY @@ -579,7 +575,6 @@ static void rv32_base_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ set_misa(env, MXL_RV32, 0); - riscv_cpu_add_user_properties(obj); /* Set latest version of privileged specification */ env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY @@ -666,7 +661,6 @@ static void riscv_host_cpu_init(Object *obj) #elif defined(TARGET_RISCV64) set_misa(env, MXL_RV64, 0); #endif - riscv_cpu_add_user_properties(obj); } #endif /* CONFIG_KVM */ @@ -1215,6 +1209,37 @@ static void riscv_cpu_set_irq(void *opaque, int irq, int level) } #endif /* CONFIG_USER_ONLY */ +static bool riscv_cpu_is_dynamic(Object *cpu_obj) +{ + return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL; +} + +static bool riscv_cpu_has_max_extensions(Object *cpu_obj) +{ + return object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_MAX) != NULL; +} + +static bool riscv_cpu_has_user_properties(Object *cpu_obj) +{ + if (kvm_enabled() && + object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_HOST) != NULL) { + return true; + } + + return riscv_cpu_is_dynamic(cpu_obj); +} + +static void riscv_cpu_post_init(Object *obj) +{ + if (riscv_cpu_has_user_properties(obj)) { + riscv_cpu_add_user_properties(obj); + } + + if (riscv_cpu_has_max_extensions(obj)) { + riscv_init_max_cpu_extensions(obj); + } +} + static void riscv_cpu_init(Object *obj) { #ifndef CONFIG_USER_ONLY @@ -1764,11 +1789,6 @@ static const struct SysemuCPUOps riscv_sysemu_ops = { }; #endif -static bool riscv_cpu_is_dynamic(Object *cpu_obj) -{ - return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL; -} - static void cpu_set_mvendorid(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { @@ -2005,6 +2025,7 @@ static const TypeInfo riscv_cpu_type_infos[] = { .instance_size = sizeof(RISCVCPU), .instance_align = __alignof(RISCVCPU), .instance_init = riscv_cpu_init, + .instance_post_init = riscv_cpu_post_init, .abstract = true, .class_size = sizeof(RISCVCPUClass), .class_init = riscv_cpu_class_init, -- cgit v1.2.3 From a7e87cd7bfd4580bc745cf12440f4e26329bc747 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:56 -0300 Subject: target/riscv: move 'host' CPU declaration to kvm.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This CPU only exists if we're compiling with KVM so move it to the kvm specific file. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-7-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 15 --------------- target/riscv/kvm.c | 21 +++++++++++++++++++++ 2 files changed, 21 insertions(+), 15 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index a6a26c0268..d78f73aa55 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -652,18 +652,6 @@ static void rv32_imafcu_nommu_cpu_init(Object *obj) } #endif -#if defined(CONFIG_KVM) -static void riscv_host_cpu_init(Object *obj) -{ - CPURISCVState *env = &RISCV_CPU(obj)->env; -#if defined(TARGET_RISCV32) - set_misa(env, MXL_RV32, 0); -#elif defined(TARGET_RISCV64) - set_misa(env, MXL_RV64, 0); -#endif -} -#endif /* CONFIG_KVM */ - static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model) { ObjectClass *oc; @@ -2037,9 +2025,6 @@ static const TypeInfo riscv_cpu_type_infos[] = { }, DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init), DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_MAX, riscv_max_cpu_init), -#if defined(CONFIG_KVM) - DEFINE_CPU(TYPE_RISCV_CPU_HOST, riscv_host_cpu_init), -#endif #if defined(TARGET_RISCV32) DEFINE_DYNAMIC_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init), diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index 1e4e4456b3..31d2ede4b6 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -1271,3 +1271,24 @@ void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled(); } + +static void riscv_host_cpu_init(Object *obj) +{ + CPURISCVState *env = &RISCV_CPU(obj)->env; + +#if defined(TARGET_RISCV32) + env->misa_mxl_max = env->misa_mxl = MXL_RV32; +#elif defined(TARGET_RISCV64) + env->misa_mxl_max = env->misa_mxl = MXL_RV64; +#endif +} + +static const TypeInfo riscv_kvm_cpu_type_infos[] = { + { + .name = TYPE_RISCV_CPU_HOST, + .parent = TYPE_RISCV_CPU, + .instance_init = riscv_host_cpu_init, + } +}; + +DEFINE_TYPES(riscv_kvm_cpu_type_infos) -- cgit v1.2.3 From ec34cd732ce33af59a913444320f870c6309de51 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:57 -0300 Subject: target/riscv/cpu.c: mark extensions arrays as 'const' We'll need to export these arrays to the accelerator classes in the next patches. Mark them as 'const' now because they should not be modified at runtime. Note that 'riscv_cpu_options' will also be exported, but can't be marked as 'const', because the properties are changed via qdev_property_add_static(). Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-8-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index d78f73aa55..d831dc375b 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1403,7 +1403,7 @@ typedef struct RISCVCPUMultiExtConfig { {.name = _name, .offset = CPU_CFG_OFFSET(_prop), \ .enabled = _defval} -static RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { +static const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { /* Defaults for standard extensions */ MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false), MULTI_EXT_CFG_BOOL("Zifencei", ext_ifencei, true), @@ -1465,7 +1465,7 @@ static RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { DEFINE_PROP_END_OF_LIST(), }; -static RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = { +static const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = { MULTI_EXT_CFG_BOOL("xtheadba", ext_xtheadba, false), MULTI_EXT_CFG_BOOL("xtheadbb", ext_xtheadbb, false), MULTI_EXT_CFG_BOOL("xtheadbs", ext_xtheadbs, false), @@ -1483,7 +1483,7 @@ static RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = { }; /* These are experimental so mark with 'x-' */ -static RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = { +static const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = { /* ePMP 0.9.3 */ MULTI_EXT_CFG_BOOL("x-epmp", epmp, false), MULTI_EXT_CFG_BOOL("x-smaia", ext_smaia, false), @@ -1554,7 +1554,7 @@ static void cpu_get_multi_ext_cfg(Object *obj, Visitor *v, const char *name, } static void cpu_add_multi_ext_prop(Object *cpu_obj, - RISCVCPUMultiExtConfig *multi_cfg) + const RISCVCPUMultiExtConfig *multi_cfg) { object_property_add(cpu_obj, multi_cfg->name, "bool", cpu_get_multi_ext_cfg, @@ -1571,11 +1571,13 @@ static void cpu_add_multi_ext_prop(Object *cpu_obj, } static void riscv_cpu_add_multiext_prop_array(Object *obj, - RISCVCPUMultiExtConfig *array) + const RISCVCPUMultiExtConfig *array) { + const RISCVCPUMultiExtConfig *prop; + g_assert(array); - for (RISCVCPUMultiExtConfig *prop = array; prop && prop->name; prop++) { + for (prop = array; prop && prop->name; prop++) { cpu_add_multi_ext_prop(obj, prop); } } @@ -1616,11 +1618,13 @@ static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) } static void riscv_cpu_add_kvm_unavail_prop_array(Object *obj, - RISCVCPUMultiExtConfig *array) + const RISCVCPUMultiExtConfig *array) { + const RISCVCPUMultiExtConfig *prop; + g_assert(array); - for (RISCVCPUMultiExtConfig *prop = array; prop && prop->name; prop++) { + for (prop = array; prop && prop->name; prop++) { riscv_cpu_add_kvm_unavail_prop(obj, prop->name); } } @@ -1683,7 +1687,7 @@ static void riscv_init_max_cpu_extensions(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); CPURISCVState *env = &cpu->env; - RISCVCPUMultiExtConfig *prop; + const RISCVCPUMultiExtConfig *prop; /* Enable RVG, RVJ and RVV that are disabled by default */ set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); -- cgit v1.2.3 From 32fa177604a8f0e3be331add04da91fef28bfbbd Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:58 -0300 Subject: target/riscv: move riscv_cpu_add_kvm_properties() to kvm.c We'll introduce the KVM accelerator class with a 'cpu_instance_init' implementation that is going to be invoked during the common riscv_cpu_post_init() (via accel_cpu_instance_init()). This instance_init will execute KVM exclusive code that TCG doesn't care about, such as adding KVM specific properties, initing registers using a KVM scratch CPU and so on. The core of the forementioned cpu_instance_init impl is the current riscv_cpu_add_kvm_properties() that is being used by the common code via riscv_cpu_add_user_properties() in cpu.c. Move it to kvm.c, together will all the relevant artifacts, exporting and renaming it to kvm_riscv_cpu_add_kvm_properties() so cpu.c can keep using it for now. To make this work we'll need to export riscv_cpu_extensions, riscv_cpu_vendor_exts and riscv_cpu_experimental_exts from cpu.c as well. The TCG accelerator will also need to access those in the near future so this export will benefit us in the long run. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-9-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 85 +++--------------------------------------------- target/riscv/cpu.h | 14 ++++++++ target/riscv/kvm.c | 68 +++++++++++++++++++++++++++++++++++++- target/riscv/kvm_riscv.h | 3 -- 4 files changed, 86 insertions(+), 84 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index d831dc375b..c73500151f 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1366,7 +1366,7 @@ static RISCVCPUMisaExtConfig misa_ext_cfgs[] = { * change MISA bits during realize() (RVG enables MISA * bits but the user is warned about it). */ -static void riscv_cpu_add_misa_properties(Object *cpu_obj) +void riscv_cpu_add_misa_properties(Object *cpu_obj) { int i; @@ -1393,17 +1393,11 @@ static void riscv_cpu_add_misa_properties(Object *cpu_obj) } } -typedef struct RISCVCPUMultiExtConfig { - const char *name; - uint32_t offset; - bool enabled; -} RISCVCPUMultiExtConfig; - #define MULTI_EXT_CFG_BOOL(_name, _prop, _defval) \ {.name = _name, .offset = CPU_CFG_OFFSET(_prop), \ .enabled = _defval} -static const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { +const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { /* Defaults for standard extensions */ MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false), MULTI_EXT_CFG_BOOL("Zifencei", ext_ifencei, true), @@ -1465,7 +1459,7 @@ static const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { DEFINE_PROP_END_OF_LIST(), }; -static const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = { +const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = { MULTI_EXT_CFG_BOOL("xtheadba", ext_xtheadba, false), MULTI_EXT_CFG_BOOL("xtheadbb", ext_xtheadbb, false), MULTI_EXT_CFG_BOOL("xtheadbs", ext_xtheadbs, false), @@ -1483,7 +1477,7 @@ static const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[] = { }; /* These are experimental so mark with 'x-' */ -static const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = { +const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = { /* ePMP 0.9.3 */ MULTI_EXT_CFG_BOOL("x-epmp", epmp, false), MULTI_EXT_CFG_BOOL("x-smaia", ext_smaia, false), @@ -1509,7 +1503,7 @@ static const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = { DEFINE_PROP_END_OF_LIST(), }; -static Property riscv_cpu_options[] = { +Property riscv_cpu_options[] = { DEFINE_PROP_UINT8("pmu-num", RISCVCPU, cfg.pmu_num, 16), DEFINE_PROP_BOOL("mmu", RISCVCPU, cfg.mmu, true), @@ -1582,75 +1576,6 @@ static void riscv_cpu_add_multiext_prop_array(Object *obj, } } -#ifdef CONFIG_KVM -static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, - const char *name, - void *opaque, Error **errp) -{ - const char *propname = opaque; - bool value; - - if (!visit_type_bool(v, name, &value, errp)) { - return; - } - - if (value) { - error_setg(errp, "extension %s is not available with KVM", - propname); - } -} - -static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) -{ - /* Check if KVM created the property already */ - if (object_property_find(obj, prop_name)) { - return; - } - - /* - * Set the default to disabled for every extension - * unknown to KVM and error out if the user attempts - * to enable any of them. - */ - object_property_add(obj, prop_name, "bool", - NULL, cpu_set_cfg_unavailable, - NULL, (void *)prop_name); -} - -static void riscv_cpu_add_kvm_unavail_prop_array(Object *obj, - const RISCVCPUMultiExtConfig *array) -{ - const RISCVCPUMultiExtConfig *prop; - - g_assert(array); - - for (prop = array; prop && prop->name; prop++) { - riscv_cpu_add_kvm_unavail_prop(obj, prop->name); - } -} - -void kvm_riscv_cpu_add_kvm_properties(Object *obj) -{ - Property *prop; - DeviceState *dev = DEVICE(obj); - - kvm_riscv_init_user_properties(obj); - riscv_cpu_add_misa_properties(obj); - - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_extensions); - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_vendor_exts); - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_experimental_exts); - - for (prop = riscv_cpu_options; prop && prop->name; prop++) { - /* Check if KVM created the property already */ - if (object_property_find(obj, prop->name)) { - continue; - } - qdev_property_add_static(dev, prop); - } -} -#endif - /* * Add CPU properties with user-facing flags. * diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 3055d741c5..0afa45aad1 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -22,6 +22,7 @@ #include "hw/core/cpu.h" #include "hw/registerfields.h" +#include "hw/qdev-properties.h" #include "exec/cpu-defs.h" #include "qemu/cpu-float.h" #include "qom/object.h" @@ -713,6 +714,19 @@ bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset); int cpu_cfg_ext_get_min_version(uint32_t ext_offset); void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu); +typedef struct RISCVCPUMultiExtConfig { + const char *name; + uint32_t offset; + bool enabled; +} RISCVCPUMultiExtConfig; + +extern const RISCVCPUMultiExtConfig riscv_cpu_extensions[]; +extern const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[]; +extern const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[]; +extern Property riscv_cpu_options[]; + +void riscv_cpu_add_misa_properties(Object *cpu_obj); + /* CSR function table */ extern riscv_csr_operations csr_ops[CSR_TABLE_SIZE]; diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index 31d2ede4b6..e682a70311 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -345,6 +345,52 @@ static void kvm_riscv_update_cpu_cfg_isa_ext(RISCVCPU *cpu, CPUState *cs) } } +static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, + const char *name, + void *opaque, Error **errp) +{ + const char *propname = opaque; + bool value; + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + + if (value) { + error_setg(errp, "extension %s is not available with KVM", + propname); + } +} + +static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) +{ + /* Check if KVM created the property already */ + if (object_property_find(obj, prop_name)) { + return; + } + + /* + * Set the default to disabled for every extension + * unknown to KVM and error out if the user attempts + * to enable any of them. + */ + object_property_add(obj, prop_name, "bool", + NULL, cpu_set_cfg_unavailable, + NULL, (void *)prop_name); +} + +static void riscv_cpu_add_kvm_unavail_prop_array(Object *obj, + const RISCVCPUMultiExtConfig *array) +{ + const RISCVCPUMultiExtConfig *prop; + + g_assert(array); + + for (prop = array; prop && prop->name; prop++) { + riscv_cpu_add_kvm_unavail_prop(obj, prop->name); + } +} + static void kvm_riscv_add_cpu_user_properties(Object *cpu_obj) { int i; @@ -754,7 +800,7 @@ static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) } } -void kvm_riscv_init_user_properties(Object *cpu_obj) +static void riscv_init_user_properties(Object *cpu_obj) { RISCVCPU *cpu = RISCV_CPU(cpu_obj); KVMScratchCPU kvmcpu; @@ -1272,6 +1318,26 @@ void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled(); } +void kvm_riscv_cpu_add_kvm_properties(Object *obj) +{ + DeviceState *dev = DEVICE(obj); + + riscv_init_user_properties(obj); + riscv_cpu_add_misa_properties(obj); + + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_extensions); + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_vendor_exts); + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_experimental_exts); + + for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { + /* Check if KVM created the property already */ + if (object_property_find(obj, prop->name)) { + continue; + } + qdev_property_add_static(dev, prop); + } +} + static void riscv_host_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h index 44b850a046..da9630c4af 100644 --- a/target/riscv/kvm_riscv.h +++ b/target/riscv/kvm_riscv.h @@ -19,10 +19,7 @@ #ifndef QEMU_KVM_RISCV_H #define QEMU_KVM_RISCV_H -/* Temporarily implemented in cpu.c */ void kvm_riscv_cpu_add_kvm_properties(Object *obj); - -void kvm_riscv_init_user_properties(Object *cpu_obj); void kvm_riscv_reset_vcpu(RISCVCPU *cpu); void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, -- cgit v1.2.3 From 7d0c302c53ce7508326092d3ed07497f82961ff7 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:56:59 -0300 Subject: target/riscv: make riscv_add_satp_mode_properties() public This function is used for both accelerators. Make it public, and call it from kvm_riscv_cpu_add_kvm_properties(). This will make it easier to split KVM specific code for the KVM accelerator class in the next patch. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-10-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 5 ++--- target/riscv/cpu.h | 1 + target/riscv/kvm.c | 1 + 3 files changed, 4 insertions(+), 3 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index c73500151f..143fbc1fbc 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1115,7 +1115,7 @@ static void cpu_riscv_set_satp(Object *obj, Visitor *v, const char *name, satp_map->init |= 1 << satp; } -static void riscv_add_satp_mode_properties(Object *obj) +void riscv_add_satp_mode_properties(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); @@ -1585,12 +1585,11 @@ static void riscv_cpu_add_multiext_prop_array(Object *obj, static void riscv_cpu_add_user_properties(Object *obj) { #ifndef CONFIG_USER_ONLY - riscv_add_satp_mode_properties(obj); - if (kvm_enabled()) { kvm_riscv_cpu_add_kvm_properties(obj); return; } + riscv_add_satp_mode_properties(obj); #endif riscv_cpu_add_misa_properties(obj); diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 0afa45aad1..d4b4ac3481 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -726,6 +726,7 @@ extern const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[]; extern Property riscv_cpu_options[]; void riscv_cpu_add_misa_properties(Object *cpu_obj); +void riscv_add_satp_mode_properties(Object *obj); /* CSR function table */ extern riscv_csr_operations csr_ops[CSR_TABLE_SIZE]; diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index e682a70311..e5e957121f 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -1323,6 +1323,7 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) DeviceState *dev = DEVICE(obj); riscv_init_user_properties(obj); + riscv_add_satp_mode_properties(obj); riscv_cpu_add_misa_properties(obj); riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_extensions); -- cgit v1.2.3 From 5c67bc73be9f896809b8ab4eb64020faa66ed491 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:00 -0300 Subject: target/riscv: remove kvm-stub.c This file is not needed for some time now. Both kvm_riscv_reset_vcpu() and kvm_riscv_set_irq() have public declarations in kvm_riscv.h and are wrapped in 'if kvm_enabled()' blocks that the compiler will rip it out in non-KVM builds. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-11-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/kvm-stub.c | 30 ------------------------------ target/riscv/meson.build | 2 +- 2 files changed, 1 insertion(+), 31 deletions(-) delete mode 100644 target/riscv/kvm-stub.c diff --git a/target/riscv/kvm-stub.c b/target/riscv/kvm-stub.c deleted file mode 100644 index 4e8fc31a21..0000000000 --- a/target/riscv/kvm-stub.c +++ /dev/null @@ -1,30 +0,0 @@ -/* - * QEMU KVM RISC-V specific function stubs - * - * Copyright (c) 2020 Huawei Technologies Co., Ltd - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2 or later, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see . - */ -#include "qemu/osdep.h" -#include "cpu.h" -#include "kvm_riscv.h" - -void kvm_riscv_reset_vcpu(RISCVCPU *cpu) -{ - abort(); -} - -void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) -{ - abort(); -} diff --git a/target/riscv/meson.build b/target/riscv/meson.build index b4ded65e41..b30ebf5795 100644 --- a/target/riscv/meson.build +++ b/target/riscv/meson.build @@ -24,7 +24,7 @@ riscv_ss.add(files( 'zce_helper.c', 'vcrypto_helper.c' )) -riscv_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c'), if_false: files('kvm-stub.c')) +riscv_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c')) riscv_system_ss = ss.source_set() riscv_system_ss.add(files( -- cgit v1.2.3 From d86c25b292bf9685615cbb93d7b07f33a9b63104 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:01 -0300 Subject: target/riscv: introduce KVM AccelCPUClass Add a KVM accelerator class like we did with TCG. The difference is that, at least for now, we won't be using a realize() implementation for this accelerator. We'll start by assiging kvm_riscv_cpu_add_kvm_properties(), renamed to kvm_cpu_instance_init(), as a 'cpu_instance_init' implementation. Change riscv_cpu_post_init() to invoke accel_cpu_instance_init(), which will go through the 'cpu_instance_init' impl of the current acceleration (if available) and execute it. The end result is that the KVM initial setup, i.e. starting registers and adding its specific properties, will be done via this hook. Add a 'tcg_enabled()' condition in riscv_cpu_post_init() to avoid calling riscv_cpu_add_user_properties() when running KVM. We'll remove this condition when the TCG accel class get its own 'cpu_instance_init' implementation. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-12-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 8 +++----- target/riscv/kvm.c | 26 ++++++++++++++++++++++++-- target/riscv/kvm_riscv.h | 1 - 3 files changed, 27 insertions(+), 8 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 143fbc1fbc..648b9f7af7 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1219,7 +1219,9 @@ static bool riscv_cpu_has_user_properties(Object *cpu_obj) static void riscv_cpu_post_init(Object *obj) { - if (riscv_cpu_has_user_properties(obj)) { + accel_cpu_instance_init(CPU(obj)); + + if (tcg_enabled() && riscv_cpu_has_user_properties(obj)) { riscv_cpu_add_user_properties(obj); } @@ -1585,10 +1587,6 @@ static void riscv_cpu_add_multiext_prop_array(Object *obj, static void riscv_cpu_add_user_properties(Object *obj) { #ifndef CONFIG_USER_ONLY - if (kvm_enabled()) { - kvm_riscv_cpu_add_kvm_properties(obj); - return; - } riscv_add_satp_mode_properties(obj); #endif diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index e5e957121f..606fdab223 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -31,6 +31,7 @@ #include "sysemu/kvm_int.h" #include "cpu.h" #include "trace.h" +#include "hw/core/accel-cpu.h" #include "hw/pci/pci.h" #include "exec/memattrs.h" #include "exec/address-spaces.h" @@ -1318,8 +1319,9 @@ void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled(); } -void kvm_riscv_cpu_add_kvm_properties(Object *obj) +static void kvm_cpu_instance_init(CPUState *cs) { + Object *obj = OBJECT(RISCV_CPU(cs)); DeviceState *dev = DEVICE(obj); riscv_init_user_properties(obj); @@ -1331,7 +1333,7 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_experimental_exts); for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { - /* Check if KVM created the property already */ + /* Check if we have a specific KVM handler for the option */ if (object_property_find(obj, prop->name)) { continue; } @@ -1339,6 +1341,26 @@ void kvm_riscv_cpu_add_kvm_properties(Object *obj) } } +static void kvm_cpu_accel_class_init(ObjectClass *oc, void *data) +{ + AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); + + acc->cpu_instance_init = kvm_cpu_instance_init; +} + +static const TypeInfo kvm_cpu_accel_type_info = { + .name = ACCEL_CPU_NAME("kvm"), + + .parent = TYPE_ACCEL_CPU, + .class_init = kvm_cpu_accel_class_init, + .abstract = true, +}; +static void kvm_cpu_accel_register_types(void) +{ + type_register_static(&kvm_cpu_accel_type_info); +} +type_init(kvm_cpu_accel_register_types); + static void riscv_host_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h index da9630c4af..8329cfab82 100644 --- a/target/riscv/kvm_riscv.h +++ b/target/riscv/kvm_riscv.h @@ -19,7 +19,6 @@ #ifndef QEMU_KVM_RISCV_H #define QEMU_KVM_RISCV_H -void kvm_riscv_cpu_add_kvm_properties(Object *obj); void kvm_riscv_reset_vcpu(RISCVCPU *cpu); void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, -- cgit v1.2.3 From fb80f33377df221728d6c3c298f19b0da7ba277a Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:02 -0300 Subject: target/riscv: move KVM only files to kvm subdir Move the files to a 'kvm' dir to promote more code separation between accelerators and making our lives easier supporting build options such as --disable-tcg. Rename kvm.c to kvm-cpu.c to keep it in line with its TCG counterpart. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: LIU Zhiwei Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-13-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- hw/intc/riscv_aplic.c | 2 +- hw/riscv/virt.c | 2 +- target/riscv/cpu.c | 2 +- target/riscv/kvm.c | 1383 ------------------------------------------ target/riscv/kvm/kvm-cpu.c | 1383 ++++++++++++++++++++++++++++++++++++++++++ target/riscv/kvm/kvm_riscv.h | 31 + target/riscv/kvm/meson.build | 1 + target/riscv/kvm_riscv.h | 31 - target/riscv/meson.build | 2 +- 9 files changed, 1419 insertions(+), 1418 deletions(-) delete mode 100644 target/riscv/kvm.c create mode 100644 target/riscv/kvm/kvm-cpu.c create mode 100644 target/riscv/kvm/kvm_riscv.h create mode 100644 target/riscv/kvm/meson.build delete mode 100644 target/riscv/kvm_riscv.h diff --git a/hw/intc/riscv_aplic.c b/hw/intc/riscv_aplic.c index 99aae8ccbe..c677b5cfbb 100644 --- a/hw/intc/riscv_aplic.c +++ b/hw/intc/riscv_aplic.c @@ -32,7 +32,7 @@ #include "target/riscv/cpu.h" #include "sysemu/sysemu.h" #include "sysemu/kvm.h" -#include "kvm_riscv.h" +#include "kvm/kvm_riscv.h" #include "migration/vmstate.h" #define APLIC_MAX_IDC (1UL << 14) diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 5edc1d98d2..9de578c756 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -35,7 +35,7 @@ #include "hw/riscv/virt.h" #include "hw/riscv/boot.h" #include "hw/riscv/numa.h" -#include "kvm_riscv.h" +#include "kvm/kvm_riscv.h" #include "hw/intc/riscv_aclint.h" #include "hw/intc/riscv_aplic.h" #include "hw/intc/riscv_imsic.h" diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 648b9f7af7..d8753240bf 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -33,7 +33,7 @@ #include "fpu/softfloat-helpers.h" #include "sysemu/kvm.h" #include "sysemu/tcg.h" -#include "kvm_riscv.h" +#include "kvm/kvm_riscv.h" #include "tcg/tcg.h" /* RISC-V CPU definitions */ diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c deleted file mode 100644 index 606fdab223..0000000000 --- a/target/riscv/kvm.c +++ /dev/null @@ -1,1383 +0,0 @@ -/* - * RISC-V implementation of KVM hooks - * - * Copyright (c) 2020 Huawei Technologies Co., Ltd - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2 or later, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see . - */ - -#include "qemu/osdep.h" -#include - -#include - -#include "qemu/timer.h" -#include "qapi/error.h" -#include "qemu/error-report.h" -#include "qemu/main-loop.h" -#include "qapi/visitor.h" -#include "sysemu/sysemu.h" -#include "sysemu/kvm.h" -#include "sysemu/kvm_int.h" -#include "cpu.h" -#include "trace.h" -#include "hw/core/accel-cpu.h" -#include "hw/pci/pci.h" -#include "exec/memattrs.h" -#include "exec/address-spaces.h" -#include "hw/boards.h" -#include "hw/irq.h" -#include "hw/intc/riscv_imsic.h" -#include "qemu/log.h" -#include "hw/loader.h" -#include "kvm_riscv.h" -#include "sbi_ecall_interface.h" -#include "chardev/char-fe.h" -#include "migration/migration.h" -#include "sysemu/runstate.h" -#include "hw/riscv/numa.h" - -void riscv_kvm_aplic_request(void *opaque, int irq, int level) -{ - kvm_set_irq(kvm_state, irq, !!level); -} - -static bool cap_has_mp_state; - -static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, - uint64_t idx) -{ - uint64_t id = KVM_REG_RISCV | type | idx; - - switch (riscv_cpu_mxl(env)) { - case MXL_RV32: - id |= KVM_REG_SIZE_U32; - break; - case MXL_RV64: - id |= KVM_REG_SIZE_U64; - break; - default: - g_assert_not_reached(); - } - return id; -} - -#define RISCV_CORE_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, \ - KVM_REG_RISCV_CORE_REG(name)) - -#define RISCV_CSR_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_CSR, \ - KVM_REG_RISCV_CSR_REG(name)) - -#define RISCV_TIMER_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_TIMER, \ - KVM_REG_RISCV_TIMER_REG(name)) - -#define RISCV_FP_F_REG(env, idx) kvm_riscv_reg_id(env, KVM_REG_RISCV_FP_F, idx) - -#define RISCV_FP_D_REG(env, idx) kvm_riscv_reg_id(env, KVM_REG_RISCV_FP_D, idx) - -#define KVM_RISCV_GET_CSR(cs, env, csr, reg) \ - do { \ - int ret = kvm_get_one_reg(cs, RISCV_CSR_REG(env, csr), ®); \ - if (ret) { \ - return ret; \ - } \ - } while (0) - -#define KVM_RISCV_SET_CSR(cs, env, csr, reg) \ - do { \ - int ret = kvm_set_one_reg(cs, RISCV_CSR_REG(env, csr), ®); \ - if (ret) { \ - return ret; \ - } \ - } while (0) - -#define KVM_RISCV_GET_TIMER(cs, env, name, reg) \ - do { \ - int ret = kvm_get_one_reg(cs, RISCV_TIMER_REG(env, name), ®); \ - if (ret) { \ - abort(); \ - } \ - } while (0) - -#define KVM_RISCV_SET_TIMER(cs, env, name, reg) \ - do { \ - int ret = kvm_set_one_reg(cs, RISCV_TIMER_REG(env, name), ®); \ - if (ret) { \ - abort(); \ - } \ - } while (0) - -typedef struct KVMCPUConfig { - const char *name; - const char *description; - target_ulong offset; - int kvm_reg_id; - bool user_set; - bool supported; -} KVMCPUConfig; - -#define KVM_MISA_CFG(_bit, _reg_id) \ - {.offset = _bit, .kvm_reg_id = _reg_id} - -/* KVM ISA extensions */ -static KVMCPUConfig kvm_misa_ext_cfgs[] = { - KVM_MISA_CFG(RVA, KVM_RISCV_ISA_EXT_A), - KVM_MISA_CFG(RVC, KVM_RISCV_ISA_EXT_C), - KVM_MISA_CFG(RVD, KVM_RISCV_ISA_EXT_D), - KVM_MISA_CFG(RVF, KVM_RISCV_ISA_EXT_F), - KVM_MISA_CFG(RVH, KVM_RISCV_ISA_EXT_H), - KVM_MISA_CFG(RVI, KVM_RISCV_ISA_EXT_I), - KVM_MISA_CFG(RVM, KVM_RISCV_ISA_EXT_M), -}; - -static void kvm_cpu_set_misa_ext_cfg(Object *obj, Visitor *v, - const char *name, - void *opaque, Error **errp) -{ - KVMCPUConfig *misa_ext_cfg = opaque; - target_ulong misa_bit = misa_ext_cfg->offset; - RISCVCPU *cpu = RISCV_CPU(obj); - CPURISCVState *env = &cpu->env; - bool value, host_bit; - - if (!visit_type_bool(v, name, &value, errp)) { - return; - } - - host_bit = env->misa_ext_mask & misa_bit; - - if (value == host_bit) { - return; - } - - if (!value) { - misa_ext_cfg->user_set = true; - return; - } - - /* - * Forbid users to enable extensions that aren't - * available in the hart. - */ - error_setg(errp, "Enabling MISA bit '%s' is not allowed: it's not " - "enabled in the host", misa_ext_cfg->name); -} - -static void kvm_riscv_update_cpu_misa_ext(RISCVCPU *cpu, CPUState *cs) -{ - CPURISCVState *env = &cpu->env; - uint64_t id, reg; - int i, ret; - - for (i = 0; i < ARRAY_SIZE(kvm_misa_ext_cfgs); i++) { - KVMCPUConfig *misa_cfg = &kvm_misa_ext_cfgs[i]; - target_ulong misa_bit = misa_cfg->offset; - - if (!misa_cfg->user_set) { - continue; - } - - /* If we're here we're going to disable the MISA bit */ - reg = 0; - id = kvm_riscv_reg_id(env, KVM_REG_RISCV_ISA_EXT, - misa_cfg->kvm_reg_id); - ret = kvm_set_one_reg(cs, id, ®); - if (ret != 0) { - /* - * We're not checking for -EINVAL because if the bit is about - * to be disabled, it means that it was already enabled by - * KVM. We determined that by fetching the 'isa' register - * during init() time. Any error at this point is worth - * aborting. - */ - error_report("Unable to set KVM reg %s, error %d", - misa_cfg->name, ret); - exit(EXIT_FAILURE); - } - env->misa_ext &= ~misa_bit; - } -} - -#define KVM_EXT_CFG(_name, _prop, _reg_id) \ - {.name = _name, .offset = CPU_CFG_OFFSET(_prop), \ - .kvm_reg_id = _reg_id} - -static KVMCPUConfig kvm_multi_ext_cfgs[] = { - KVM_EXT_CFG("zicbom", ext_icbom, KVM_RISCV_ISA_EXT_ZICBOM), - KVM_EXT_CFG("zicboz", ext_icboz, KVM_RISCV_ISA_EXT_ZICBOZ), - KVM_EXT_CFG("zihintpause", ext_zihintpause, KVM_RISCV_ISA_EXT_ZIHINTPAUSE), - KVM_EXT_CFG("zbb", ext_zbb, KVM_RISCV_ISA_EXT_ZBB), - KVM_EXT_CFG("ssaia", ext_ssaia, KVM_RISCV_ISA_EXT_SSAIA), - KVM_EXT_CFG("sstc", ext_sstc, KVM_RISCV_ISA_EXT_SSTC), - KVM_EXT_CFG("svinval", ext_svinval, KVM_RISCV_ISA_EXT_SVINVAL), - KVM_EXT_CFG("svpbmt", ext_svpbmt, KVM_RISCV_ISA_EXT_SVPBMT), -}; - -static void *kvmconfig_get_cfg_addr(RISCVCPU *cpu, KVMCPUConfig *kvmcfg) -{ - return (void *)&cpu->cfg + kvmcfg->offset; -} - -static void kvm_cpu_cfg_set(RISCVCPU *cpu, KVMCPUConfig *multi_ext, - uint32_t val) -{ - bool *ext_enabled = kvmconfig_get_cfg_addr(cpu, multi_ext); - - *ext_enabled = val; -} - -static uint32_t kvm_cpu_cfg_get(RISCVCPU *cpu, - KVMCPUConfig *multi_ext) -{ - bool *ext_enabled = kvmconfig_get_cfg_addr(cpu, multi_ext); - - return *ext_enabled; -} - -static void kvm_cpu_set_multi_ext_cfg(Object *obj, Visitor *v, - const char *name, - void *opaque, Error **errp) -{ - KVMCPUConfig *multi_ext_cfg = opaque; - RISCVCPU *cpu = RISCV_CPU(obj); - bool value, host_val; - - if (!visit_type_bool(v, name, &value, errp)) { - return; - } - - host_val = kvm_cpu_cfg_get(cpu, multi_ext_cfg); - - /* - * Ignore if the user is setting the same value - * as the host. - */ - if (value == host_val) { - return; - } - - if (!multi_ext_cfg->supported) { - /* - * Error out if the user is trying to enable an - * extension that KVM doesn't support. Ignore - * option otherwise. - */ - if (value) { - error_setg(errp, "KVM does not support disabling extension %s", - multi_ext_cfg->name); - } - - return; - } - - multi_ext_cfg->user_set = true; - kvm_cpu_cfg_set(cpu, multi_ext_cfg, value); -} - -static KVMCPUConfig kvm_cbom_blocksize = { - .name = "cbom_blocksize", - .offset = CPU_CFG_OFFSET(cbom_blocksize), - .kvm_reg_id = KVM_REG_RISCV_CONFIG_REG(zicbom_block_size) -}; - -static KVMCPUConfig kvm_cboz_blocksize = { - .name = "cboz_blocksize", - .offset = CPU_CFG_OFFSET(cboz_blocksize), - .kvm_reg_id = KVM_REG_RISCV_CONFIG_REG(zicboz_block_size) -}; - -static void kvm_cpu_set_cbomz_blksize(Object *obj, Visitor *v, - const char *name, - void *opaque, Error **errp) -{ - KVMCPUConfig *cbomz_cfg = opaque; - RISCVCPU *cpu = RISCV_CPU(obj); - uint16_t value, *host_val; - - if (!visit_type_uint16(v, name, &value, errp)) { - return; - } - - host_val = kvmconfig_get_cfg_addr(cpu, cbomz_cfg); - - if (value != *host_val) { - error_report("Unable to set %s to a different value than " - "the host (%u)", - cbomz_cfg->name, *host_val); - exit(EXIT_FAILURE); - } - - cbomz_cfg->user_set = true; -} - -static void kvm_riscv_update_cpu_cfg_isa_ext(RISCVCPU *cpu, CPUState *cs) -{ - CPURISCVState *env = &cpu->env; - uint64_t id, reg; - int i, ret; - - for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { - KVMCPUConfig *multi_ext_cfg = &kvm_multi_ext_cfgs[i]; - - if (!multi_ext_cfg->user_set) { - continue; - } - - id = kvm_riscv_reg_id(env, KVM_REG_RISCV_ISA_EXT, - multi_ext_cfg->kvm_reg_id); - reg = kvm_cpu_cfg_get(cpu, multi_ext_cfg); - ret = kvm_set_one_reg(cs, id, ®); - if (ret != 0) { - error_report("Unable to %s extension %s in KVM, error %d", - reg ? "enable" : "disable", - multi_ext_cfg->name, ret); - exit(EXIT_FAILURE); - } - } -} - -static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, - const char *name, - void *opaque, Error **errp) -{ - const char *propname = opaque; - bool value; - - if (!visit_type_bool(v, name, &value, errp)) { - return; - } - - if (value) { - error_setg(errp, "extension %s is not available with KVM", - propname); - } -} - -static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) -{ - /* Check if KVM created the property already */ - if (object_property_find(obj, prop_name)) { - return; - } - - /* - * Set the default to disabled for every extension - * unknown to KVM and error out if the user attempts - * to enable any of them. - */ - object_property_add(obj, prop_name, "bool", - NULL, cpu_set_cfg_unavailable, - NULL, (void *)prop_name); -} - -static void riscv_cpu_add_kvm_unavail_prop_array(Object *obj, - const RISCVCPUMultiExtConfig *array) -{ - const RISCVCPUMultiExtConfig *prop; - - g_assert(array); - - for (prop = array; prop && prop->name; prop++) { - riscv_cpu_add_kvm_unavail_prop(obj, prop->name); - } -} - -static void kvm_riscv_add_cpu_user_properties(Object *cpu_obj) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(kvm_misa_ext_cfgs); i++) { - KVMCPUConfig *misa_cfg = &kvm_misa_ext_cfgs[i]; - int bit = misa_cfg->offset; - - misa_cfg->name = riscv_get_misa_ext_name(bit); - misa_cfg->description = riscv_get_misa_ext_description(bit); - - object_property_add(cpu_obj, misa_cfg->name, "bool", - NULL, - kvm_cpu_set_misa_ext_cfg, - NULL, misa_cfg); - object_property_set_description(cpu_obj, misa_cfg->name, - misa_cfg->description); - } - - for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { - KVMCPUConfig *multi_cfg = &kvm_multi_ext_cfgs[i]; - - object_property_add(cpu_obj, multi_cfg->name, "bool", - NULL, - kvm_cpu_set_multi_ext_cfg, - NULL, multi_cfg); - } - - object_property_add(cpu_obj, "cbom_blocksize", "uint16", - NULL, kvm_cpu_set_cbomz_blksize, - NULL, &kvm_cbom_blocksize); - - object_property_add(cpu_obj, "cboz_blocksize", "uint16", - NULL, kvm_cpu_set_cbomz_blksize, - NULL, &kvm_cboz_blocksize); -} - -static int kvm_riscv_get_regs_core(CPUState *cs) -{ - int ret = 0; - int i; - target_ulong reg; - CPURISCVState *env = &RISCV_CPU(cs)->env; - - ret = kvm_get_one_reg(cs, RISCV_CORE_REG(env, regs.pc), ®); - if (ret) { - return ret; - } - env->pc = reg; - - for (i = 1; i < 32; i++) { - uint64_t id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, i); - ret = kvm_get_one_reg(cs, id, ®); - if (ret) { - return ret; - } - env->gpr[i] = reg; - } - - return ret; -} - -static int kvm_riscv_put_regs_core(CPUState *cs) -{ - int ret = 0; - int i; - target_ulong reg; - CPURISCVState *env = &RISCV_CPU(cs)->env; - - reg = env->pc; - ret = kvm_set_one_reg(cs, RISCV_CORE_REG(env, regs.pc), ®); - if (ret) { - return ret; - } - - for (i = 1; i < 32; i++) { - uint64_t id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, i); - reg = env->gpr[i]; - ret = kvm_set_one_reg(cs, id, ®); - if (ret) { - return ret; - } - } - - return ret; -} - -static int kvm_riscv_get_regs_csr(CPUState *cs) -{ - int ret = 0; - CPURISCVState *env = &RISCV_CPU(cs)->env; - - KVM_RISCV_GET_CSR(cs, env, sstatus, env->mstatus); - KVM_RISCV_GET_CSR(cs, env, sie, env->mie); - KVM_RISCV_GET_CSR(cs, env, stvec, env->stvec); - KVM_RISCV_GET_CSR(cs, env, sscratch, env->sscratch); - KVM_RISCV_GET_CSR(cs, env, sepc, env->sepc); - KVM_RISCV_GET_CSR(cs, env, scause, env->scause); - KVM_RISCV_GET_CSR(cs, env, stval, env->stval); - KVM_RISCV_GET_CSR(cs, env, sip, env->mip); - KVM_RISCV_GET_CSR(cs, env, satp, env->satp); - return ret; -} - -static int kvm_riscv_put_regs_csr(CPUState *cs) -{ - int ret = 0; - CPURISCVState *env = &RISCV_CPU(cs)->env; - - KVM_RISCV_SET_CSR(cs, env, sstatus, env->mstatus); - KVM_RISCV_SET_CSR(cs, env, sie, env->mie); - KVM_RISCV_SET_CSR(cs, env, stvec, env->stvec); - KVM_RISCV_SET_CSR(cs, env, sscratch, env->sscratch); - KVM_RISCV_SET_CSR(cs, env, sepc, env->sepc); - KVM_RISCV_SET_CSR(cs, env, scause, env->scause); - KVM_RISCV_SET_CSR(cs, env, stval, env->stval); - KVM_RISCV_SET_CSR(cs, env, sip, env->mip); - KVM_RISCV_SET_CSR(cs, env, satp, env->satp); - - return ret; -} - -static int kvm_riscv_get_regs_fp(CPUState *cs) -{ - int ret = 0; - int i; - CPURISCVState *env = &RISCV_CPU(cs)->env; - - if (riscv_has_ext(env, RVD)) { - uint64_t reg; - for (i = 0; i < 32; i++) { - ret = kvm_get_one_reg(cs, RISCV_FP_D_REG(env, i), ®); - if (ret) { - return ret; - } - env->fpr[i] = reg; - } - return ret; - } - - if (riscv_has_ext(env, RVF)) { - uint32_t reg; - for (i = 0; i < 32; i++) { - ret = kvm_get_one_reg(cs, RISCV_FP_F_REG(env, i), ®); - if (ret) { - return ret; - } - env->fpr[i] = reg; - } - return ret; - } - - return ret; -} - -static int kvm_riscv_put_regs_fp(CPUState *cs) -{ - int ret = 0; - int i; - CPURISCVState *env = &RISCV_CPU(cs)->env; - - if (riscv_has_ext(env, RVD)) { - uint64_t reg; - for (i = 0; i < 32; i++) { - reg = env->fpr[i]; - ret = kvm_set_one_reg(cs, RISCV_FP_D_REG(env, i), ®); - if (ret) { - return ret; - } - } - return ret; - } - - if (riscv_has_ext(env, RVF)) { - uint32_t reg; - for (i = 0; i < 32; i++) { - reg = env->fpr[i]; - ret = kvm_set_one_reg(cs, RISCV_FP_F_REG(env, i), ®); - if (ret) { - return ret; - } - } - return ret; - } - - return ret; -} - -static void kvm_riscv_get_regs_timer(CPUState *cs) -{ - CPURISCVState *env = &RISCV_CPU(cs)->env; - - if (env->kvm_timer_dirty) { - return; - } - - KVM_RISCV_GET_TIMER(cs, env, time, env->kvm_timer_time); - KVM_RISCV_GET_TIMER(cs, env, compare, env->kvm_timer_compare); - KVM_RISCV_GET_TIMER(cs, env, state, env->kvm_timer_state); - KVM_RISCV_GET_TIMER(cs, env, frequency, env->kvm_timer_frequency); - - env->kvm_timer_dirty = true; -} - -static void kvm_riscv_put_regs_timer(CPUState *cs) -{ - uint64_t reg; - CPURISCVState *env = &RISCV_CPU(cs)->env; - - if (!env->kvm_timer_dirty) { - return; - } - - KVM_RISCV_SET_TIMER(cs, env, time, env->kvm_timer_time); - KVM_RISCV_SET_TIMER(cs, env, compare, env->kvm_timer_compare); - - /* - * To set register of RISCV_TIMER_REG(state) will occur a error from KVM - * on env->kvm_timer_state == 0, It's better to adapt in KVM, but it - * doesn't matter that adaping in QEMU now. - * TODO If KVM changes, adapt here. - */ - if (env->kvm_timer_state) { - KVM_RISCV_SET_TIMER(cs, env, state, env->kvm_timer_state); - } - - /* - * For now, migration will not work between Hosts with different timer - * frequency. Therefore, we should check whether they are the same here - * during the migration. - */ - if (migration_is_running(migrate_get_current()->state)) { - KVM_RISCV_GET_TIMER(cs, env, frequency, reg); - if (reg != env->kvm_timer_frequency) { - error_report("Dst Hosts timer frequency != Src Hosts"); - } - } - - env->kvm_timer_dirty = false; -} - -typedef struct KVMScratchCPU { - int kvmfd; - int vmfd; - int cpufd; -} KVMScratchCPU; - -/* - * Heavily inspired by kvm_arm_create_scratch_host_vcpu() - * from target/arm/kvm.c. - */ -static bool kvm_riscv_create_scratch_vcpu(KVMScratchCPU *scratch) -{ - int kvmfd = -1, vmfd = -1, cpufd = -1; - - kvmfd = qemu_open_old("/dev/kvm", O_RDWR); - if (kvmfd < 0) { - goto err; - } - do { - vmfd = ioctl(kvmfd, KVM_CREATE_VM, 0); - } while (vmfd == -1 && errno == EINTR); - if (vmfd < 0) { - goto err; - } - cpufd = ioctl(vmfd, KVM_CREATE_VCPU, 0); - if (cpufd < 0) { - goto err; - } - - scratch->kvmfd = kvmfd; - scratch->vmfd = vmfd; - scratch->cpufd = cpufd; - - return true; - - err: - if (cpufd >= 0) { - close(cpufd); - } - if (vmfd >= 0) { - close(vmfd); - } - if (kvmfd >= 0) { - close(kvmfd); - } - - return false; -} - -static void kvm_riscv_destroy_scratch_vcpu(KVMScratchCPU *scratch) -{ - close(scratch->cpufd); - close(scratch->vmfd); - close(scratch->kvmfd); -} - -static void kvm_riscv_init_machine_ids(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) -{ - CPURISCVState *env = &cpu->env; - struct kvm_one_reg reg; - int ret; - - reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - KVM_REG_RISCV_CONFIG_REG(mvendorid)); - reg.addr = (uint64_t)&cpu->cfg.mvendorid; - ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); - if (ret != 0) { - error_report("Unable to retrieve mvendorid from host, error %d", ret); - } - - reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - KVM_REG_RISCV_CONFIG_REG(marchid)); - reg.addr = (uint64_t)&cpu->cfg.marchid; - ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); - if (ret != 0) { - error_report("Unable to retrieve marchid from host, error %d", ret); - } - - reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - KVM_REG_RISCV_CONFIG_REG(mimpid)); - reg.addr = (uint64_t)&cpu->cfg.mimpid; - ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); - if (ret != 0) { - error_report("Unable to retrieve mimpid from host, error %d", ret); - } -} - -static void kvm_riscv_init_misa_ext_mask(RISCVCPU *cpu, - KVMScratchCPU *kvmcpu) -{ - CPURISCVState *env = &cpu->env; - struct kvm_one_reg reg; - int ret; - - reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - KVM_REG_RISCV_CONFIG_REG(isa)); - reg.addr = (uint64_t)&env->misa_ext_mask; - ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); - - if (ret) { - error_report("Unable to fetch ISA register from KVM, " - "error %d", ret); - kvm_riscv_destroy_scratch_vcpu(kvmcpu); - exit(EXIT_FAILURE); - } - - env->misa_ext = env->misa_ext_mask; -} - -static void kvm_riscv_read_cbomz_blksize(RISCVCPU *cpu, KVMScratchCPU *kvmcpu, - KVMCPUConfig *cbomz_cfg) -{ - CPURISCVState *env = &cpu->env; - struct kvm_one_reg reg; - int ret; - - reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - cbomz_cfg->kvm_reg_id); - reg.addr = (uint64_t)kvmconfig_get_cfg_addr(cpu, cbomz_cfg); - ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); - if (ret != 0) { - error_report("Unable to read KVM reg %s, error %d", - cbomz_cfg->name, ret); - exit(EXIT_FAILURE); - } -} - -static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) -{ - CPURISCVState *env = &cpu->env; - uint64_t val; - int i, ret; - - for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { - KVMCPUConfig *multi_ext_cfg = &kvm_multi_ext_cfgs[i]; - struct kvm_one_reg reg; - - reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_ISA_EXT, - multi_ext_cfg->kvm_reg_id); - reg.addr = (uint64_t)&val; - ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); - if (ret != 0) { - if (errno == EINVAL) { - /* Silently default to 'false' if KVM does not support it. */ - multi_ext_cfg->supported = false; - val = false; - } else { - error_report("Unable to read ISA_EXT KVM register %s, " - "error %d", multi_ext_cfg->name, ret); - kvm_riscv_destroy_scratch_vcpu(kvmcpu); - exit(EXIT_FAILURE); - } - } else { - multi_ext_cfg->supported = true; - } - - kvm_cpu_cfg_set(cpu, multi_ext_cfg, val); - } - - if (cpu->cfg.ext_icbom) { - kvm_riscv_read_cbomz_blksize(cpu, kvmcpu, &kvm_cbom_blocksize); - } - - if (cpu->cfg.ext_icboz) { - kvm_riscv_read_cbomz_blksize(cpu, kvmcpu, &kvm_cboz_blocksize); - } -} - -static void riscv_init_user_properties(Object *cpu_obj) -{ - RISCVCPU *cpu = RISCV_CPU(cpu_obj); - KVMScratchCPU kvmcpu; - - if (!kvm_riscv_create_scratch_vcpu(&kvmcpu)) { - return; - } - - kvm_riscv_add_cpu_user_properties(cpu_obj); - kvm_riscv_init_machine_ids(cpu, &kvmcpu); - kvm_riscv_init_misa_ext_mask(cpu, &kvmcpu); - kvm_riscv_init_multiext_cfg(cpu, &kvmcpu); - - kvm_riscv_destroy_scratch_vcpu(&kvmcpu); -} - -const KVMCapabilityInfo kvm_arch_required_capabilities[] = { - KVM_CAP_LAST_INFO -}; - -int kvm_arch_get_registers(CPUState *cs) -{ - int ret = 0; - - ret = kvm_riscv_get_regs_core(cs); - if (ret) { - return ret; - } - - ret = kvm_riscv_get_regs_csr(cs); - if (ret) { - return ret; - } - - ret = kvm_riscv_get_regs_fp(cs); - if (ret) { - return ret; - } - - return ret; -} - -int kvm_riscv_sync_mpstate_to_kvm(RISCVCPU *cpu, int state) -{ - if (cap_has_mp_state) { - struct kvm_mp_state mp_state = { - .mp_state = state - }; - - int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state); - if (ret) { - fprintf(stderr, "%s: failed to sync MP_STATE %d/%s\n", - __func__, ret, strerror(-ret)); - return -1; - } - } - - return 0; -} - -int kvm_arch_put_registers(CPUState *cs, int level) -{ - int ret = 0; - - ret = kvm_riscv_put_regs_core(cs); - if (ret) { - return ret; - } - - ret = kvm_riscv_put_regs_csr(cs); - if (ret) { - return ret; - } - - ret = kvm_riscv_put_regs_fp(cs); - if (ret) { - return ret; - } - - if (KVM_PUT_RESET_STATE == level) { - RISCVCPU *cpu = RISCV_CPU(cs); - if (cs->cpu_index == 0) { - ret = kvm_riscv_sync_mpstate_to_kvm(cpu, KVM_MP_STATE_RUNNABLE); - } else { - ret = kvm_riscv_sync_mpstate_to_kvm(cpu, KVM_MP_STATE_STOPPED); - } - if (ret) { - return ret; - } - } - - return ret; -} - -int kvm_arch_release_virq_post(int virq) -{ - return 0; -} - -int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, - uint64_t address, uint32_t data, PCIDevice *dev) -{ - return 0; -} - -int kvm_arch_destroy_vcpu(CPUState *cs) -{ - return 0; -} - -unsigned long kvm_arch_vcpu_id(CPUState *cpu) -{ - return cpu->cpu_index; -} - -static void kvm_riscv_vm_state_change(void *opaque, bool running, - RunState state) -{ - CPUState *cs = opaque; - - if (running) { - kvm_riscv_put_regs_timer(cs); - } else { - kvm_riscv_get_regs_timer(cs); - } -} - -void kvm_arch_init_irq_routing(KVMState *s) -{ -} - -static int kvm_vcpu_set_machine_ids(RISCVCPU *cpu, CPUState *cs) -{ - CPURISCVState *env = &cpu->env; - target_ulong reg; - uint64_t id; - int ret; - - id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - KVM_REG_RISCV_CONFIG_REG(mvendorid)); - /* - * cfg.mvendorid is an uint32 but a target_ulong will - * be written. Assign it to a target_ulong var to avoid - * writing pieces of other cpu->cfg fields in the reg. - */ - reg = cpu->cfg.mvendorid; - ret = kvm_set_one_reg(cs, id, ®); - if (ret != 0) { - return ret; - } - - id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - KVM_REG_RISCV_CONFIG_REG(marchid)); - ret = kvm_set_one_reg(cs, id, &cpu->cfg.marchid); - if (ret != 0) { - return ret; - } - - id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, - KVM_REG_RISCV_CONFIG_REG(mimpid)); - ret = kvm_set_one_reg(cs, id, &cpu->cfg.mimpid); - - return ret; -} - -int kvm_arch_init_vcpu(CPUState *cs) -{ - int ret = 0; - RISCVCPU *cpu = RISCV_CPU(cs); - - qemu_add_vm_change_state_handler(kvm_riscv_vm_state_change, cs); - - if (!object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_CPU_HOST)) { - ret = kvm_vcpu_set_machine_ids(cpu, cs); - if (ret != 0) { - return ret; - } - } - - kvm_riscv_update_cpu_misa_ext(cpu, cs); - kvm_riscv_update_cpu_cfg_isa_ext(cpu, cs); - - return ret; -} - -int kvm_arch_msi_data_to_gsi(uint32_t data) -{ - abort(); -} - -int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, - int vector, PCIDevice *dev) -{ - return 0; -} - -int kvm_arch_get_default_type(MachineState *ms) -{ - return 0; -} - -int kvm_arch_init(MachineState *ms, KVMState *s) -{ - cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE); - return 0; -} - -int kvm_arch_irqchip_create(KVMState *s) -{ - if (kvm_kernel_irqchip_split()) { - error_report("-machine kernel_irqchip=split is not supported on RISC-V."); - exit(1); - } - - /* - * We can create the VAIA using the newer device control API. - */ - return kvm_check_extension(s, KVM_CAP_DEVICE_CTRL); -} - -int kvm_arch_process_async_events(CPUState *cs) -{ - return 0; -} - -void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run) -{ -} - -MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run) -{ - return MEMTXATTRS_UNSPECIFIED; -} - -bool kvm_arch_stop_on_emulation_error(CPUState *cs) -{ - return true; -} - -static int kvm_riscv_handle_sbi(CPUState *cs, struct kvm_run *run) -{ - int ret = 0; - unsigned char ch; - switch (run->riscv_sbi.extension_id) { - case SBI_EXT_0_1_CONSOLE_PUTCHAR: - ch = run->riscv_sbi.args[0]; - qemu_chr_fe_write(serial_hd(0)->be, &ch, sizeof(ch)); - break; - case SBI_EXT_0_1_CONSOLE_GETCHAR: - ret = qemu_chr_fe_read_all(serial_hd(0)->be, &ch, sizeof(ch)); - if (ret == sizeof(ch)) { - run->riscv_sbi.ret[0] = ch; - } else { - run->riscv_sbi.ret[0] = -1; - } - ret = 0; - break; - default: - qemu_log_mask(LOG_UNIMP, - "%s: un-handled SBI EXIT, specific reasons is %lu\n", - __func__, run->riscv_sbi.extension_id); - ret = -1; - break; - } - return ret; -} - -int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) -{ - int ret = 0; - switch (run->exit_reason) { - case KVM_EXIT_RISCV_SBI: - ret = kvm_riscv_handle_sbi(cs, run); - break; - default: - qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n", - __func__, run->exit_reason); - ret = -1; - break; - } - return ret; -} - -void kvm_riscv_reset_vcpu(RISCVCPU *cpu) -{ - CPURISCVState *env = &cpu->env; - int i; - - if (!kvm_enabled()) { - return; - } - for (i = 0; i < 32; i++) { - env->gpr[i] = 0; - } - env->pc = cpu->env.kernel_addr; - env->gpr[10] = kvm_arch_vcpu_id(CPU(cpu)); /* a0 */ - env->gpr[11] = cpu->env.fdt_addr; /* a1 */ - env->satp = 0; - env->mie = 0; - env->stvec = 0; - env->sscratch = 0; - env->sepc = 0; - env->scause = 0; - env->stval = 0; - env->mip = 0; -} - -void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) -{ - int ret; - unsigned virq = level ? KVM_INTERRUPT_SET : KVM_INTERRUPT_UNSET; - - if (irq != IRQ_S_EXT) { - perror("kvm riscv set irq != IRQ_S_EXT\n"); - abort(); - } - - ret = kvm_vcpu_ioctl(CPU(cpu), KVM_INTERRUPT, &virq); - if (ret < 0) { - perror("Set irq failed"); - abort(); - } -} - -bool kvm_arch_cpu_check_are_resettable(void) -{ - return true; -} - -static int aia_mode; - -static const char *kvm_aia_mode_str(uint64_t mode) -{ - switch (mode) { - case KVM_DEV_RISCV_AIA_MODE_EMUL: - return "emul"; - case KVM_DEV_RISCV_AIA_MODE_HWACCEL: - return "hwaccel"; - case KVM_DEV_RISCV_AIA_MODE_AUTO: - default: - return "auto"; - }; -} - -static char *riscv_get_kvm_aia(Object *obj, Error **errp) -{ - return g_strdup(kvm_aia_mode_str(aia_mode)); -} - -static void riscv_set_kvm_aia(Object *obj, const char *val, Error **errp) -{ - if (!strcmp(val, "emul")) { - aia_mode = KVM_DEV_RISCV_AIA_MODE_EMUL; - } else if (!strcmp(val, "hwaccel")) { - aia_mode = KVM_DEV_RISCV_AIA_MODE_HWACCEL; - } else if (!strcmp(val, "auto")) { - aia_mode = KVM_DEV_RISCV_AIA_MODE_AUTO; - } else { - error_setg(errp, "Invalid KVM AIA mode"); - error_append_hint(errp, "Valid values are emul, hwaccel, and auto.\n"); - } -} - -void kvm_arch_accel_class_init(ObjectClass *oc) -{ - object_class_property_add_str(oc, "riscv-aia", riscv_get_kvm_aia, - riscv_set_kvm_aia); - object_class_property_set_description(oc, "riscv-aia", - "Set KVM AIA mode. Valid values are " - "emul, hwaccel, and auto. Default " - "is auto."); - object_property_set_default_str(object_class_property_find(oc, "riscv-aia"), - "auto"); -} - -void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, - uint64_t aia_irq_num, uint64_t aia_msi_num, - uint64_t aplic_base, uint64_t imsic_base, - uint64_t guest_num) -{ - int ret, i; - int aia_fd = -1; - uint64_t default_aia_mode; - uint64_t socket_count = riscv_socket_count(machine); - uint64_t max_hart_per_socket = 0; - uint64_t socket, base_hart, hart_count, socket_imsic_base, imsic_addr; - uint64_t socket_bits, hart_bits, guest_bits; - - aia_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_RISCV_AIA, false); - - if (aia_fd < 0) { - error_report("Unable to create in-kernel irqchip"); - exit(1); - } - - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_MODE, - &default_aia_mode, false, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to get current KVM AIA mode"); - exit(1); - } - qemu_log("KVM AIA: default mode is %s\n", - kvm_aia_mode_str(default_aia_mode)); - - if (default_aia_mode != aia_mode) { - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_MODE, - &aia_mode, true, NULL); - if (ret < 0) - warn_report("KVM AIA: failed to set KVM AIA mode"); - else - qemu_log("KVM AIA: set current mode to %s\n", - kvm_aia_mode_str(aia_mode)); - } - - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_SRCS, - &aia_irq_num, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set number of input irq lines"); - exit(1); - } - - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_IDS, - &aia_msi_num, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set number of msi"); - exit(1); - } - - socket_bits = find_last_bit(&socket_count, BITS_PER_LONG) + 1; - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_GROUP_BITS, - &socket_bits, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set group_bits"); - exit(1); - } - - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_GROUP_SHIFT, - &group_shift, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set group_shift"); - exit(1); - } - - guest_bits = guest_num == 0 ? 0 : - find_last_bit(&guest_num, BITS_PER_LONG) + 1; - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_GUEST_BITS, - &guest_bits, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set guest_bits"); - exit(1); - } - - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, - KVM_DEV_RISCV_AIA_ADDR_APLIC, - &aplic_base, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set the base address of APLIC"); - exit(1); - } - - for (socket = 0; socket < socket_count; socket++) { - socket_imsic_base = imsic_base + socket * (1U << group_shift); - hart_count = riscv_socket_hart_count(machine, socket); - base_hart = riscv_socket_first_hartid(machine, socket); - - if (max_hart_per_socket < hart_count) { - max_hart_per_socket = hart_count; - } - - for (i = 0; i < hart_count; i++) { - imsic_addr = socket_imsic_base + i * IMSIC_HART_SIZE(guest_bits); - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, - KVM_DEV_RISCV_AIA_ADDR_IMSIC(i + base_hart), - &imsic_addr, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set the IMSIC address for hart %d", i); - exit(1); - } - } - } - - hart_bits = find_last_bit(&max_hart_per_socket, BITS_PER_LONG) + 1; - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, - KVM_DEV_RISCV_AIA_CONFIG_HART_BITS, - &hart_bits, true, NULL); - if (ret < 0) { - error_report("KVM AIA: failed to set hart_bits"); - exit(1); - } - - if (kvm_has_gsi_routing()) { - for (uint64_t idx = 0; idx < aia_irq_num + 1; ++idx) { - /* KVM AIA only has one APLIC instance */ - kvm_irqchip_add_irq_route(kvm_state, idx, 0, idx); - } - kvm_gsi_routing_allowed = true; - kvm_irqchip_commit_routes(kvm_state); - } - - ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CTRL, - KVM_DEV_RISCV_AIA_CTRL_INIT, - NULL, true, NULL); - if (ret < 0) { - error_report("KVM AIA: initialized fail"); - exit(1); - } - - kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled(); -} - -static void kvm_cpu_instance_init(CPUState *cs) -{ - Object *obj = OBJECT(RISCV_CPU(cs)); - DeviceState *dev = DEVICE(obj); - - riscv_init_user_properties(obj); - riscv_add_satp_mode_properties(obj); - riscv_cpu_add_misa_properties(obj); - - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_extensions); - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_vendor_exts); - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_experimental_exts); - - for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { - /* Check if we have a specific KVM handler for the option */ - if (object_property_find(obj, prop->name)) { - continue; - } - qdev_property_add_static(dev, prop); - } -} - -static void kvm_cpu_accel_class_init(ObjectClass *oc, void *data) -{ - AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); - - acc->cpu_instance_init = kvm_cpu_instance_init; -} - -static const TypeInfo kvm_cpu_accel_type_info = { - .name = ACCEL_CPU_NAME("kvm"), - - .parent = TYPE_ACCEL_CPU, - .class_init = kvm_cpu_accel_class_init, - .abstract = true, -}; -static void kvm_cpu_accel_register_types(void) -{ - type_register_static(&kvm_cpu_accel_type_info); -} -type_init(kvm_cpu_accel_register_types); - -static void riscv_host_cpu_init(Object *obj) -{ - CPURISCVState *env = &RISCV_CPU(obj)->env; - -#if defined(TARGET_RISCV32) - env->misa_mxl_max = env->misa_mxl = MXL_RV32; -#elif defined(TARGET_RISCV64) - env->misa_mxl_max = env->misa_mxl = MXL_RV64; -#endif -} - -static const TypeInfo riscv_kvm_cpu_type_infos[] = { - { - .name = TYPE_RISCV_CPU_HOST, - .parent = TYPE_RISCV_CPU, - .instance_init = riscv_host_cpu_init, - } -}; - -DEFINE_TYPES(riscv_kvm_cpu_type_infos) diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c new file mode 100644 index 0000000000..606fdab223 --- /dev/null +++ b/target/riscv/kvm/kvm-cpu.c @@ -0,0 +1,1383 @@ +/* + * RISC-V implementation of KVM hooks + * + * Copyright (c) 2020 Huawei Technologies Co., Ltd + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#include "qemu/osdep.h" +#include + +#include + +#include "qemu/timer.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "qemu/main-loop.h" +#include "qapi/visitor.h" +#include "sysemu/sysemu.h" +#include "sysemu/kvm.h" +#include "sysemu/kvm_int.h" +#include "cpu.h" +#include "trace.h" +#include "hw/core/accel-cpu.h" +#include "hw/pci/pci.h" +#include "exec/memattrs.h" +#include "exec/address-spaces.h" +#include "hw/boards.h" +#include "hw/irq.h" +#include "hw/intc/riscv_imsic.h" +#include "qemu/log.h" +#include "hw/loader.h" +#include "kvm_riscv.h" +#include "sbi_ecall_interface.h" +#include "chardev/char-fe.h" +#include "migration/migration.h" +#include "sysemu/runstate.h" +#include "hw/riscv/numa.h" + +void riscv_kvm_aplic_request(void *opaque, int irq, int level) +{ + kvm_set_irq(kvm_state, irq, !!level); +} + +static bool cap_has_mp_state; + +static uint64_t kvm_riscv_reg_id(CPURISCVState *env, uint64_t type, + uint64_t idx) +{ + uint64_t id = KVM_REG_RISCV | type | idx; + + switch (riscv_cpu_mxl(env)) { + case MXL_RV32: + id |= KVM_REG_SIZE_U32; + break; + case MXL_RV64: + id |= KVM_REG_SIZE_U64; + break; + default: + g_assert_not_reached(); + } + return id; +} + +#define RISCV_CORE_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, \ + KVM_REG_RISCV_CORE_REG(name)) + +#define RISCV_CSR_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_CSR, \ + KVM_REG_RISCV_CSR_REG(name)) + +#define RISCV_TIMER_REG(env, name) kvm_riscv_reg_id(env, KVM_REG_RISCV_TIMER, \ + KVM_REG_RISCV_TIMER_REG(name)) + +#define RISCV_FP_F_REG(env, idx) kvm_riscv_reg_id(env, KVM_REG_RISCV_FP_F, idx) + +#define RISCV_FP_D_REG(env, idx) kvm_riscv_reg_id(env, KVM_REG_RISCV_FP_D, idx) + +#define KVM_RISCV_GET_CSR(cs, env, csr, reg) \ + do { \ + int ret = kvm_get_one_reg(cs, RISCV_CSR_REG(env, csr), ®); \ + if (ret) { \ + return ret; \ + } \ + } while (0) + +#define KVM_RISCV_SET_CSR(cs, env, csr, reg) \ + do { \ + int ret = kvm_set_one_reg(cs, RISCV_CSR_REG(env, csr), ®); \ + if (ret) { \ + return ret; \ + } \ + } while (0) + +#define KVM_RISCV_GET_TIMER(cs, env, name, reg) \ + do { \ + int ret = kvm_get_one_reg(cs, RISCV_TIMER_REG(env, name), ®); \ + if (ret) { \ + abort(); \ + } \ + } while (0) + +#define KVM_RISCV_SET_TIMER(cs, env, name, reg) \ + do { \ + int ret = kvm_set_one_reg(cs, RISCV_TIMER_REG(env, name), ®); \ + if (ret) { \ + abort(); \ + } \ + } while (0) + +typedef struct KVMCPUConfig { + const char *name; + const char *description; + target_ulong offset; + int kvm_reg_id; + bool user_set; + bool supported; +} KVMCPUConfig; + +#define KVM_MISA_CFG(_bit, _reg_id) \ + {.offset = _bit, .kvm_reg_id = _reg_id} + +/* KVM ISA extensions */ +static KVMCPUConfig kvm_misa_ext_cfgs[] = { + KVM_MISA_CFG(RVA, KVM_RISCV_ISA_EXT_A), + KVM_MISA_CFG(RVC, KVM_RISCV_ISA_EXT_C), + KVM_MISA_CFG(RVD, KVM_RISCV_ISA_EXT_D), + KVM_MISA_CFG(RVF, KVM_RISCV_ISA_EXT_F), + KVM_MISA_CFG(RVH, KVM_RISCV_ISA_EXT_H), + KVM_MISA_CFG(RVI, KVM_RISCV_ISA_EXT_I), + KVM_MISA_CFG(RVM, KVM_RISCV_ISA_EXT_M), +}; + +static void kvm_cpu_set_misa_ext_cfg(Object *obj, Visitor *v, + const char *name, + void *opaque, Error **errp) +{ + KVMCPUConfig *misa_ext_cfg = opaque; + target_ulong misa_bit = misa_ext_cfg->offset; + RISCVCPU *cpu = RISCV_CPU(obj); + CPURISCVState *env = &cpu->env; + bool value, host_bit; + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + + host_bit = env->misa_ext_mask & misa_bit; + + if (value == host_bit) { + return; + } + + if (!value) { + misa_ext_cfg->user_set = true; + return; + } + + /* + * Forbid users to enable extensions that aren't + * available in the hart. + */ + error_setg(errp, "Enabling MISA bit '%s' is not allowed: it's not " + "enabled in the host", misa_ext_cfg->name); +} + +static void kvm_riscv_update_cpu_misa_ext(RISCVCPU *cpu, CPUState *cs) +{ + CPURISCVState *env = &cpu->env; + uint64_t id, reg; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(kvm_misa_ext_cfgs); i++) { + KVMCPUConfig *misa_cfg = &kvm_misa_ext_cfgs[i]; + target_ulong misa_bit = misa_cfg->offset; + + if (!misa_cfg->user_set) { + continue; + } + + /* If we're here we're going to disable the MISA bit */ + reg = 0; + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_ISA_EXT, + misa_cfg->kvm_reg_id); + ret = kvm_set_one_reg(cs, id, ®); + if (ret != 0) { + /* + * We're not checking for -EINVAL because if the bit is about + * to be disabled, it means that it was already enabled by + * KVM. We determined that by fetching the 'isa' register + * during init() time. Any error at this point is worth + * aborting. + */ + error_report("Unable to set KVM reg %s, error %d", + misa_cfg->name, ret); + exit(EXIT_FAILURE); + } + env->misa_ext &= ~misa_bit; + } +} + +#define KVM_EXT_CFG(_name, _prop, _reg_id) \ + {.name = _name, .offset = CPU_CFG_OFFSET(_prop), \ + .kvm_reg_id = _reg_id} + +static KVMCPUConfig kvm_multi_ext_cfgs[] = { + KVM_EXT_CFG("zicbom", ext_icbom, KVM_RISCV_ISA_EXT_ZICBOM), + KVM_EXT_CFG("zicboz", ext_icboz, KVM_RISCV_ISA_EXT_ZICBOZ), + KVM_EXT_CFG("zihintpause", ext_zihintpause, KVM_RISCV_ISA_EXT_ZIHINTPAUSE), + KVM_EXT_CFG("zbb", ext_zbb, KVM_RISCV_ISA_EXT_ZBB), + KVM_EXT_CFG("ssaia", ext_ssaia, KVM_RISCV_ISA_EXT_SSAIA), + KVM_EXT_CFG("sstc", ext_sstc, KVM_RISCV_ISA_EXT_SSTC), + KVM_EXT_CFG("svinval", ext_svinval, KVM_RISCV_ISA_EXT_SVINVAL), + KVM_EXT_CFG("svpbmt", ext_svpbmt, KVM_RISCV_ISA_EXT_SVPBMT), +}; + +static void *kvmconfig_get_cfg_addr(RISCVCPU *cpu, KVMCPUConfig *kvmcfg) +{ + return (void *)&cpu->cfg + kvmcfg->offset; +} + +static void kvm_cpu_cfg_set(RISCVCPU *cpu, KVMCPUConfig *multi_ext, + uint32_t val) +{ + bool *ext_enabled = kvmconfig_get_cfg_addr(cpu, multi_ext); + + *ext_enabled = val; +} + +static uint32_t kvm_cpu_cfg_get(RISCVCPU *cpu, + KVMCPUConfig *multi_ext) +{ + bool *ext_enabled = kvmconfig_get_cfg_addr(cpu, multi_ext); + + return *ext_enabled; +} + +static void kvm_cpu_set_multi_ext_cfg(Object *obj, Visitor *v, + const char *name, + void *opaque, Error **errp) +{ + KVMCPUConfig *multi_ext_cfg = opaque; + RISCVCPU *cpu = RISCV_CPU(obj); + bool value, host_val; + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + + host_val = kvm_cpu_cfg_get(cpu, multi_ext_cfg); + + /* + * Ignore if the user is setting the same value + * as the host. + */ + if (value == host_val) { + return; + } + + if (!multi_ext_cfg->supported) { + /* + * Error out if the user is trying to enable an + * extension that KVM doesn't support. Ignore + * option otherwise. + */ + if (value) { + error_setg(errp, "KVM does not support disabling extension %s", + multi_ext_cfg->name); + } + + return; + } + + multi_ext_cfg->user_set = true; + kvm_cpu_cfg_set(cpu, multi_ext_cfg, value); +} + +static KVMCPUConfig kvm_cbom_blocksize = { + .name = "cbom_blocksize", + .offset = CPU_CFG_OFFSET(cbom_blocksize), + .kvm_reg_id = KVM_REG_RISCV_CONFIG_REG(zicbom_block_size) +}; + +static KVMCPUConfig kvm_cboz_blocksize = { + .name = "cboz_blocksize", + .offset = CPU_CFG_OFFSET(cboz_blocksize), + .kvm_reg_id = KVM_REG_RISCV_CONFIG_REG(zicboz_block_size) +}; + +static void kvm_cpu_set_cbomz_blksize(Object *obj, Visitor *v, + const char *name, + void *opaque, Error **errp) +{ + KVMCPUConfig *cbomz_cfg = opaque; + RISCVCPU *cpu = RISCV_CPU(obj); + uint16_t value, *host_val; + + if (!visit_type_uint16(v, name, &value, errp)) { + return; + } + + host_val = kvmconfig_get_cfg_addr(cpu, cbomz_cfg); + + if (value != *host_val) { + error_report("Unable to set %s to a different value than " + "the host (%u)", + cbomz_cfg->name, *host_val); + exit(EXIT_FAILURE); + } + + cbomz_cfg->user_set = true; +} + +static void kvm_riscv_update_cpu_cfg_isa_ext(RISCVCPU *cpu, CPUState *cs) +{ + CPURISCVState *env = &cpu->env; + uint64_t id, reg; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { + KVMCPUConfig *multi_ext_cfg = &kvm_multi_ext_cfgs[i]; + + if (!multi_ext_cfg->user_set) { + continue; + } + + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_ISA_EXT, + multi_ext_cfg->kvm_reg_id); + reg = kvm_cpu_cfg_get(cpu, multi_ext_cfg); + ret = kvm_set_one_reg(cs, id, ®); + if (ret != 0) { + error_report("Unable to %s extension %s in KVM, error %d", + reg ? "enable" : "disable", + multi_ext_cfg->name, ret); + exit(EXIT_FAILURE); + } + } +} + +static void cpu_set_cfg_unavailable(Object *obj, Visitor *v, + const char *name, + void *opaque, Error **errp) +{ + const char *propname = opaque; + bool value; + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + + if (value) { + error_setg(errp, "extension %s is not available with KVM", + propname); + } +} + +static void riscv_cpu_add_kvm_unavail_prop(Object *obj, const char *prop_name) +{ + /* Check if KVM created the property already */ + if (object_property_find(obj, prop_name)) { + return; + } + + /* + * Set the default to disabled for every extension + * unknown to KVM and error out if the user attempts + * to enable any of them. + */ + object_property_add(obj, prop_name, "bool", + NULL, cpu_set_cfg_unavailable, + NULL, (void *)prop_name); +} + +static void riscv_cpu_add_kvm_unavail_prop_array(Object *obj, + const RISCVCPUMultiExtConfig *array) +{ + const RISCVCPUMultiExtConfig *prop; + + g_assert(array); + + for (prop = array; prop && prop->name; prop++) { + riscv_cpu_add_kvm_unavail_prop(obj, prop->name); + } +} + +static void kvm_riscv_add_cpu_user_properties(Object *cpu_obj) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(kvm_misa_ext_cfgs); i++) { + KVMCPUConfig *misa_cfg = &kvm_misa_ext_cfgs[i]; + int bit = misa_cfg->offset; + + misa_cfg->name = riscv_get_misa_ext_name(bit); + misa_cfg->description = riscv_get_misa_ext_description(bit); + + object_property_add(cpu_obj, misa_cfg->name, "bool", + NULL, + kvm_cpu_set_misa_ext_cfg, + NULL, misa_cfg); + object_property_set_description(cpu_obj, misa_cfg->name, + misa_cfg->description); + } + + for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { + KVMCPUConfig *multi_cfg = &kvm_multi_ext_cfgs[i]; + + object_property_add(cpu_obj, multi_cfg->name, "bool", + NULL, + kvm_cpu_set_multi_ext_cfg, + NULL, multi_cfg); + } + + object_property_add(cpu_obj, "cbom_blocksize", "uint16", + NULL, kvm_cpu_set_cbomz_blksize, + NULL, &kvm_cbom_blocksize); + + object_property_add(cpu_obj, "cboz_blocksize", "uint16", + NULL, kvm_cpu_set_cbomz_blksize, + NULL, &kvm_cboz_blocksize); +} + +static int kvm_riscv_get_regs_core(CPUState *cs) +{ + int ret = 0; + int i; + target_ulong reg; + CPURISCVState *env = &RISCV_CPU(cs)->env; + + ret = kvm_get_one_reg(cs, RISCV_CORE_REG(env, regs.pc), ®); + if (ret) { + return ret; + } + env->pc = reg; + + for (i = 1; i < 32; i++) { + uint64_t id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, i); + ret = kvm_get_one_reg(cs, id, ®); + if (ret) { + return ret; + } + env->gpr[i] = reg; + } + + return ret; +} + +static int kvm_riscv_put_regs_core(CPUState *cs) +{ + int ret = 0; + int i; + target_ulong reg; + CPURISCVState *env = &RISCV_CPU(cs)->env; + + reg = env->pc; + ret = kvm_set_one_reg(cs, RISCV_CORE_REG(env, regs.pc), ®); + if (ret) { + return ret; + } + + for (i = 1; i < 32; i++) { + uint64_t id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CORE, i); + reg = env->gpr[i]; + ret = kvm_set_one_reg(cs, id, ®); + if (ret) { + return ret; + } + } + + return ret; +} + +static int kvm_riscv_get_regs_csr(CPUState *cs) +{ + int ret = 0; + CPURISCVState *env = &RISCV_CPU(cs)->env; + + KVM_RISCV_GET_CSR(cs, env, sstatus, env->mstatus); + KVM_RISCV_GET_CSR(cs, env, sie, env->mie); + KVM_RISCV_GET_CSR(cs, env, stvec, env->stvec); + KVM_RISCV_GET_CSR(cs, env, sscratch, env->sscratch); + KVM_RISCV_GET_CSR(cs, env, sepc, env->sepc); + KVM_RISCV_GET_CSR(cs, env, scause, env->scause); + KVM_RISCV_GET_CSR(cs, env, stval, env->stval); + KVM_RISCV_GET_CSR(cs, env, sip, env->mip); + KVM_RISCV_GET_CSR(cs, env, satp, env->satp); + return ret; +} + +static int kvm_riscv_put_regs_csr(CPUState *cs) +{ + int ret = 0; + CPURISCVState *env = &RISCV_CPU(cs)->env; + + KVM_RISCV_SET_CSR(cs, env, sstatus, env->mstatus); + KVM_RISCV_SET_CSR(cs, env, sie, env->mie); + KVM_RISCV_SET_CSR(cs, env, stvec, env->stvec); + KVM_RISCV_SET_CSR(cs, env, sscratch, env->sscratch); + KVM_RISCV_SET_CSR(cs, env, sepc, env->sepc); + KVM_RISCV_SET_CSR(cs, env, scause, env->scause); + KVM_RISCV_SET_CSR(cs, env, stval, env->stval); + KVM_RISCV_SET_CSR(cs, env, sip, env->mip); + KVM_RISCV_SET_CSR(cs, env, satp, env->satp); + + return ret; +} + +static int kvm_riscv_get_regs_fp(CPUState *cs) +{ + int ret = 0; + int i; + CPURISCVState *env = &RISCV_CPU(cs)->env; + + if (riscv_has_ext(env, RVD)) { + uint64_t reg; + for (i = 0; i < 32; i++) { + ret = kvm_get_one_reg(cs, RISCV_FP_D_REG(env, i), ®); + if (ret) { + return ret; + } + env->fpr[i] = reg; + } + return ret; + } + + if (riscv_has_ext(env, RVF)) { + uint32_t reg; + for (i = 0; i < 32; i++) { + ret = kvm_get_one_reg(cs, RISCV_FP_F_REG(env, i), ®); + if (ret) { + return ret; + } + env->fpr[i] = reg; + } + return ret; + } + + return ret; +} + +static int kvm_riscv_put_regs_fp(CPUState *cs) +{ + int ret = 0; + int i; + CPURISCVState *env = &RISCV_CPU(cs)->env; + + if (riscv_has_ext(env, RVD)) { + uint64_t reg; + for (i = 0; i < 32; i++) { + reg = env->fpr[i]; + ret = kvm_set_one_reg(cs, RISCV_FP_D_REG(env, i), ®); + if (ret) { + return ret; + } + } + return ret; + } + + if (riscv_has_ext(env, RVF)) { + uint32_t reg; + for (i = 0; i < 32; i++) { + reg = env->fpr[i]; + ret = kvm_set_one_reg(cs, RISCV_FP_F_REG(env, i), ®); + if (ret) { + return ret; + } + } + return ret; + } + + return ret; +} + +static void kvm_riscv_get_regs_timer(CPUState *cs) +{ + CPURISCVState *env = &RISCV_CPU(cs)->env; + + if (env->kvm_timer_dirty) { + return; + } + + KVM_RISCV_GET_TIMER(cs, env, time, env->kvm_timer_time); + KVM_RISCV_GET_TIMER(cs, env, compare, env->kvm_timer_compare); + KVM_RISCV_GET_TIMER(cs, env, state, env->kvm_timer_state); + KVM_RISCV_GET_TIMER(cs, env, frequency, env->kvm_timer_frequency); + + env->kvm_timer_dirty = true; +} + +static void kvm_riscv_put_regs_timer(CPUState *cs) +{ + uint64_t reg; + CPURISCVState *env = &RISCV_CPU(cs)->env; + + if (!env->kvm_timer_dirty) { + return; + } + + KVM_RISCV_SET_TIMER(cs, env, time, env->kvm_timer_time); + KVM_RISCV_SET_TIMER(cs, env, compare, env->kvm_timer_compare); + + /* + * To set register of RISCV_TIMER_REG(state) will occur a error from KVM + * on env->kvm_timer_state == 0, It's better to adapt in KVM, but it + * doesn't matter that adaping in QEMU now. + * TODO If KVM changes, adapt here. + */ + if (env->kvm_timer_state) { + KVM_RISCV_SET_TIMER(cs, env, state, env->kvm_timer_state); + } + + /* + * For now, migration will not work between Hosts with different timer + * frequency. Therefore, we should check whether they are the same here + * during the migration. + */ + if (migration_is_running(migrate_get_current()->state)) { + KVM_RISCV_GET_TIMER(cs, env, frequency, reg); + if (reg != env->kvm_timer_frequency) { + error_report("Dst Hosts timer frequency != Src Hosts"); + } + } + + env->kvm_timer_dirty = false; +} + +typedef struct KVMScratchCPU { + int kvmfd; + int vmfd; + int cpufd; +} KVMScratchCPU; + +/* + * Heavily inspired by kvm_arm_create_scratch_host_vcpu() + * from target/arm/kvm.c. + */ +static bool kvm_riscv_create_scratch_vcpu(KVMScratchCPU *scratch) +{ + int kvmfd = -1, vmfd = -1, cpufd = -1; + + kvmfd = qemu_open_old("/dev/kvm", O_RDWR); + if (kvmfd < 0) { + goto err; + } + do { + vmfd = ioctl(kvmfd, KVM_CREATE_VM, 0); + } while (vmfd == -1 && errno == EINTR); + if (vmfd < 0) { + goto err; + } + cpufd = ioctl(vmfd, KVM_CREATE_VCPU, 0); + if (cpufd < 0) { + goto err; + } + + scratch->kvmfd = kvmfd; + scratch->vmfd = vmfd; + scratch->cpufd = cpufd; + + return true; + + err: + if (cpufd >= 0) { + close(cpufd); + } + if (vmfd >= 0) { + close(vmfd); + } + if (kvmfd >= 0) { + close(kvmfd); + } + + return false; +} + +static void kvm_riscv_destroy_scratch_vcpu(KVMScratchCPU *scratch) +{ + close(scratch->cpufd); + close(scratch->vmfd); + close(scratch->kvmfd); +} + +static void kvm_riscv_init_machine_ids(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) +{ + CPURISCVState *env = &cpu->env; + struct kvm_one_reg reg; + int ret; + + reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + KVM_REG_RISCV_CONFIG_REG(mvendorid)); + reg.addr = (uint64_t)&cpu->cfg.mvendorid; + ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); + if (ret != 0) { + error_report("Unable to retrieve mvendorid from host, error %d", ret); + } + + reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + KVM_REG_RISCV_CONFIG_REG(marchid)); + reg.addr = (uint64_t)&cpu->cfg.marchid; + ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); + if (ret != 0) { + error_report("Unable to retrieve marchid from host, error %d", ret); + } + + reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + KVM_REG_RISCV_CONFIG_REG(mimpid)); + reg.addr = (uint64_t)&cpu->cfg.mimpid; + ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); + if (ret != 0) { + error_report("Unable to retrieve mimpid from host, error %d", ret); + } +} + +static void kvm_riscv_init_misa_ext_mask(RISCVCPU *cpu, + KVMScratchCPU *kvmcpu) +{ + CPURISCVState *env = &cpu->env; + struct kvm_one_reg reg; + int ret; + + reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + KVM_REG_RISCV_CONFIG_REG(isa)); + reg.addr = (uint64_t)&env->misa_ext_mask; + ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); + + if (ret) { + error_report("Unable to fetch ISA register from KVM, " + "error %d", ret); + kvm_riscv_destroy_scratch_vcpu(kvmcpu); + exit(EXIT_FAILURE); + } + + env->misa_ext = env->misa_ext_mask; +} + +static void kvm_riscv_read_cbomz_blksize(RISCVCPU *cpu, KVMScratchCPU *kvmcpu, + KVMCPUConfig *cbomz_cfg) +{ + CPURISCVState *env = &cpu->env; + struct kvm_one_reg reg; + int ret; + + reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + cbomz_cfg->kvm_reg_id); + reg.addr = (uint64_t)kvmconfig_get_cfg_addr(cpu, cbomz_cfg); + ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); + if (ret != 0) { + error_report("Unable to read KVM reg %s, error %d", + cbomz_cfg->name, ret); + exit(EXIT_FAILURE); + } +} + +static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) +{ + CPURISCVState *env = &cpu->env; + uint64_t val; + int i, ret; + + for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { + KVMCPUConfig *multi_ext_cfg = &kvm_multi_ext_cfgs[i]; + struct kvm_one_reg reg; + + reg.id = kvm_riscv_reg_id(env, KVM_REG_RISCV_ISA_EXT, + multi_ext_cfg->kvm_reg_id); + reg.addr = (uint64_t)&val; + ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); + if (ret != 0) { + if (errno == EINVAL) { + /* Silently default to 'false' if KVM does not support it. */ + multi_ext_cfg->supported = false; + val = false; + } else { + error_report("Unable to read ISA_EXT KVM register %s, " + "error %d", multi_ext_cfg->name, ret); + kvm_riscv_destroy_scratch_vcpu(kvmcpu); + exit(EXIT_FAILURE); + } + } else { + multi_ext_cfg->supported = true; + } + + kvm_cpu_cfg_set(cpu, multi_ext_cfg, val); + } + + if (cpu->cfg.ext_icbom) { + kvm_riscv_read_cbomz_blksize(cpu, kvmcpu, &kvm_cbom_blocksize); + } + + if (cpu->cfg.ext_icboz) { + kvm_riscv_read_cbomz_blksize(cpu, kvmcpu, &kvm_cboz_blocksize); + } +} + +static void riscv_init_user_properties(Object *cpu_obj) +{ + RISCVCPU *cpu = RISCV_CPU(cpu_obj); + KVMScratchCPU kvmcpu; + + if (!kvm_riscv_create_scratch_vcpu(&kvmcpu)) { + return; + } + + kvm_riscv_add_cpu_user_properties(cpu_obj); + kvm_riscv_init_machine_ids(cpu, &kvmcpu); + kvm_riscv_init_misa_ext_mask(cpu, &kvmcpu); + kvm_riscv_init_multiext_cfg(cpu, &kvmcpu); + + kvm_riscv_destroy_scratch_vcpu(&kvmcpu); +} + +const KVMCapabilityInfo kvm_arch_required_capabilities[] = { + KVM_CAP_LAST_INFO +}; + +int kvm_arch_get_registers(CPUState *cs) +{ + int ret = 0; + + ret = kvm_riscv_get_regs_core(cs); + if (ret) { + return ret; + } + + ret = kvm_riscv_get_regs_csr(cs); + if (ret) { + return ret; + } + + ret = kvm_riscv_get_regs_fp(cs); + if (ret) { + return ret; + } + + return ret; +} + +int kvm_riscv_sync_mpstate_to_kvm(RISCVCPU *cpu, int state) +{ + if (cap_has_mp_state) { + struct kvm_mp_state mp_state = { + .mp_state = state + }; + + int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state); + if (ret) { + fprintf(stderr, "%s: failed to sync MP_STATE %d/%s\n", + __func__, ret, strerror(-ret)); + return -1; + } + } + + return 0; +} + +int kvm_arch_put_registers(CPUState *cs, int level) +{ + int ret = 0; + + ret = kvm_riscv_put_regs_core(cs); + if (ret) { + return ret; + } + + ret = kvm_riscv_put_regs_csr(cs); + if (ret) { + return ret; + } + + ret = kvm_riscv_put_regs_fp(cs); + if (ret) { + return ret; + } + + if (KVM_PUT_RESET_STATE == level) { + RISCVCPU *cpu = RISCV_CPU(cs); + if (cs->cpu_index == 0) { + ret = kvm_riscv_sync_mpstate_to_kvm(cpu, KVM_MP_STATE_RUNNABLE); + } else { + ret = kvm_riscv_sync_mpstate_to_kvm(cpu, KVM_MP_STATE_STOPPED); + } + if (ret) { + return ret; + } + } + + return ret; +} + +int kvm_arch_release_virq_post(int virq) +{ + return 0; +} + +int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, + uint64_t address, uint32_t data, PCIDevice *dev) +{ + return 0; +} + +int kvm_arch_destroy_vcpu(CPUState *cs) +{ + return 0; +} + +unsigned long kvm_arch_vcpu_id(CPUState *cpu) +{ + return cpu->cpu_index; +} + +static void kvm_riscv_vm_state_change(void *opaque, bool running, + RunState state) +{ + CPUState *cs = opaque; + + if (running) { + kvm_riscv_put_regs_timer(cs); + } else { + kvm_riscv_get_regs_timer(cs); + } +} + +void kvm_arch_init_irq_routing(KVMState *s) +{ +} + +static int kvm_vcpu_set_machine_ids(RISCVCPU *cpu, CPUState *cs) +{ + CPURISCVState *env = &cpu->env; + target_ulong reg; + uint64_t id; + int ret; + + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + KVM_REG_RISCV_CONFIG_REG(mvendorid)); + /* + * cfg.mvendorid is an uint32 but a target_ulong will + * be written. Assign it to a target_ulong var to avoid + * writing pieces of other cpu->cfg fields in the reg. + */ + reg = cpu->cfg.mvendorid; + ret = kvm_set_one_reg(cs, id, ®); + if (ret != 0) { + return ret; + } + + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + KVM_REG_RISCV_CONFIG_REG(marchid)); + ret = kvm_set_one_reg(cs, id, &cpu->cfg.marchid); + if (ret != 0) { + return ret; + } + + id = kvm_riscv_reg_id(env, KVM_REG_RISCV_CONFIG, + KVM_REG_RISCV_CONFIG_REG(mimpid)); + ret = kvm_set_one_reg(cs, id, &cpu->cfg.mimpid); + + return ret; +} + +int kvm_arch_init_vcpu(CPUState *cs) +{ + int ret = 0; + RISCVCPU *cpu = RISCV_CPU(cs); + + qemu_add_vm_change_state_handler(kvm_riscv_vm_state_change, cs); + + if (!object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_CPU_HOST)) { + ret = kvm_vcpu_set_machine_ids(cpu, cs); + if (ret != 0) { + return ret; + } + } + + kvm_riscv_update_cpu_misa_ext(cpu, cs); + kvm_riscv_update_cpu_cfg_isa_ext(cpu, cs); + + return ret; +} + +int kvm_arch_msi_data_to_gsi(uint32_t data) +{ + abort(); +} + +int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, + int vector, PCIDevice *dev) +{ + return 0; +} + +int kvm_arch_get_default_type(MachineState *ms) +{ + return 0; +} + +int kvm_arch_init(MachineState *ms, KVMState *s) +{ + cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE); + return 0; +} + +int kvm_arch_irqchip_create(KVMState *s) +{ + if (kvm_kernel_irqchip_split()) { + error_report("-machine kernel_irqchip=split is not supported on RISC-V."); + exit(1); + } + + /* + * We can create the VAIA using the newer device control API. + */ + return kvm_check_extension(s, KVM_CAP_DEVICE_CTRL); +} + +int kvm_arch_process_async_events(CPUState *cs) +{ + return 0; +} + +void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run) +{ +} + +MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run) +{ + return MEMTXATTRS_UNSPECIFIED; +} + +bool kvm_arch_stop_on_emulation_error(CPUState *cs) +{ + return true; +} + +static int kvm_riscv_handle_sbi(CPUState *cs, struct kvm_run *run) +{ + int ret = 0; + unsigned char ch; + switch (run->riscv_sbi.extension_id) { + case SBI_EXT_0_1_CONSOLE_PUTCHAR: + ch = run->riscv_sbi.args[0]; + qemu_chr_fe_write(serial_hd(0)->be, &ch, sizeof(ch)); + break; + case SBI_EXT_0_1_CONSOLE_GETCHAR: + ret = qemu_chr_fe_read_all(serial_hd(0)->be, &ch, sizeof(ch)); + if (ret == sizeof(ch)) { + run->riscv_sbi.ret[0] = ch; + } else { + run->riscv_sbi.ret[0] = -1; + } + ret = 0; + break; + default: + qemu_log_mask(LOG_UNIMP, + "%s: un-handled SBI EXIT, specific reasons is %lu\n", + __func__, run->riscv_sbi.extension_id); + ret = -1; + break; + } + return ret; +} + +int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) +{ + int ret = 0; + switch (run->exit_reason) { + case KVM_EXIT_RISCV_SBI: + ret = kvm_riscv_handle_sbi(cs, run); + break; + default: + qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n", + __func__, run->exit_reason); + ret = -1; + break; + } + return ret; +} + +void kvm_riscv_reset_vcpu(RISCVCPU *cpu) +{ + CPURISCVState *env = &cpu->env; + int i; + + if (!kvm_enabled()) { + return; + } + for (i = 0; i < 32; i++) { + env->gpr[i] = 0; + } + env->pc = cpu->env.kernel_addr; + env->gpr[10] = kvm_arch_vcpu_id(CPU(cpu)); /* a0 */ + env->gpr[11] = cpu->env.fdt_addr; /* a1 */ + env->satp = 0; + env->mie = 0; + env->stvec = 0; + env->sscratch = 0; + env->sepc = 0; + env->scause = 0; + env->stval = 0; + env->mip = 0; +} + +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) +{ + int ret; + unsigned virq = level ? KVM_INTERRUPT_SET : KVM_INTERRUPT_UNSET; + + if (irq != IRQ_S_EXT) { + perror("kvm riscv set irq != IRQ_S_EXT\n"); + abort(); + } + + ret = kvm_vcpu_ioctl(CPU(cpu), KVM_INTERRUPT, &virq); + if (ret < 0) { + perror("Set irq failed"); + abort(); + } +} + +bool kvm_arch_cpu_check_are_resettable(void) +{ + return true; +} + +static int aia_mode; + +static const char *kvm_aia_mode_str(uint64_t mode) +{ + switch (mode) { + case KVM_DEV_RISCV_AIA_MODE_EMUL: + return "emul"; + case KVM_DEV_RISCV_AIA_MODE_HWACCEL: + return "hwaccel"; + case KVM_DEV_RISCV_AIA_MODE_AUTO: + default: + return "auto"; + }; +} + +static char *riscv_get_kvm_aia(Object *obj, Error **errp) +{ + return g_strdup(kvm_aia_mode_str(aia_mode)); +} + +static void riscv_set_kvm_aia(Object *obj, const char *val, Error **errp) +{ + if (!strcmp(val, "emul")) { + aia_mode = KVM_DEV_RISCV_AIA_MODE_EMUL; + } else if (!strcmp(val, "hwaccel")) { + aia_mode = KVM_DEV_RISCV_AIA_MODE_HWACCEL; + } else if (!strcmp(val, "auto")) { + aia_mode = KVM_DEV_RISCV_AIA_MODE_AUTO; + } else { + error_setg(errp, "Invalid KVM AIA mode"); + error_append_hint(errp, "Valid values are emul, hwaccel, and auto.\n"); + } +} + +void kvm_arch_accel_class_init(ObjectClass *oc) +{ + object_class_property_add_str(oc, "riscv-aia", riscv_get_kvm_aia, + riscv_set_kvm_aia); + object_class_property_set_description(oc, "riscv-aia", + "Set KVM AIA mode. Valid values are " + "emul, hwaccel, and auto. Default " + "is auto."); + object_property_set_default_str(object_class_property_find(oc, "riscv-aia"), + "auto"); +} + +void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, + uint64_t aia_irq_num, uint64_t aia_msi_num, + uint64_t aplic_base, uint64_t imsic_base, + uint64_t guest_num) +{ + int ret, i; + int aia_fd = -1; + uint64_t default_aia_mode; + uint64_t socket_count = riscv_socket_count(machine); + uint64_t max_hart_per_socket = 0; + uint64_t socket, base_hart, hart_count, socket_imsic_base, imsic_addr; + uint64_t socket_bits, hart_bits, guest_bits; + + aia_fd = kvm_create_device(kvm_state, KVM_DEV_TYPE_RISCV_AIA, false); + + if (aia_fd < 0) { + error_report("Unable to create in-kernel irqchip"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_MODE, + &default_aia_mode, false, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to get current KVM AIA mode"); + exit(1); + } + qemu_log("KVM AIA: default mode is %s\n", + kvm_aia_mode_str(default_aia_mode)); + + if (default_aia_mode != aia_mode) { + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_MODE, + &aia_mode, true, NULL); + if (ret < 0) + warn_report("KVM AIA: failed to set KVM AIA mode"); + else + qemu_log("KVM AIA: set current mode to %s\n", + kvm_aia_mode_str(aia_mode)); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_SRCS, + &aia_irq_num, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set number of input irq lines"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_IDS, + &aia_msi_num, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set number of msi"); + exit(1); + } + + socket_bits = find_last_bit(&socket_count, BITS_PER_LONG) + 1; + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_GROUP_BITS, + &socket_bits, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set group_bits"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_GROUP_SHIFT, + &group_shift, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set group_shift"); + exit(1); + } + + guest_bits = guest_num == 0 ? 0 : + find_last_bit(&guest_num, BITS_PER_LONG) + 1; + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_GUEST_BITS, + &guest_bits, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set guest_bits"); + exit(1); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, + KVM_DEV_RISCV_AIA_ADDR_APLIC, + &aplic_base, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set the base address of APLIC"); + exit(1); + } + + for (socket = 0; socket < socket_count; socket++) { + socket_imsic_base = imsic_base + socket * (1U << group_shift); + hart_count = riscv_socket_hart_count(machine, socket); + base_hart = riscv_socket_first_hartid(machine, socket); + + if (max_hart_per_socket < hart_count) { + max_hart_per_socket = hart_count; + } + + for (i = 0; i < hart_count; i++) { + imsic_addr = socket_imsic_base + i * IMSIC_HART_SIZE(guest_bits); + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_ADDR, + KVM_DEV_RISCV_AIA_ADDR_IMSIC(i + base_hart), + &imsic_addr, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set the IMSIC address for hart %d", i); + exit(1); + } + } + } + + hart_bits = find_last_bit(&max_hart_per_socket, BITS_PER_LONG) + 1; + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CONFIG, + KVM_DEV_RISCV_AIA_CONFIG_HART_BITS, + &hart_bits, true, NULL); + if (ret < 0) { + error_report("KVM AIA: failed to set hart_bits"); + exit(1); + } + + if (kvm_has_gsi_routing()) { + for (uint64_t idx = 0; idx < aia_irq_num + 1; ++idx) { + /* KVM AIA only has one APLIC instance */ + kvm_irqchip_add_irq_route(kvm_state, idx, 0, idx); + } + kvm_gsi_routing_allowed = true; + kvm_irqchip_commit_routes(kvm_state); + } + + ret = kvm_device_access(aia_fd, KVM_DEV_RISCV_AIA_GRP_CTRL, + KVM_DEV_RISCV_AIA_CTRL_INIT, + NULL, true, NULL); + if (ret < 0) { + error_report("KVM AIA: initialized fail"); + exit(1); + } + + kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled(); +} + +static void kvm_cpu_instance_init(CPUState *cs) +{ + Object *obj = OBJECT(RISCV_CPU(cs)); + DeviceState *dev = DEVICE(obj); + + riscv_init_user_properties(obj); + riscv_add_satp_mode_properties(obj); + riscv_cpu_add_misa_properties(obj); + + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_extensions); + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_vendor_exts); + riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_experimental_exts); + + for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { + /* Check if we have a specific KVM handler for the option */ + if (object_property_find(obj, prop->name)) { + continue; + } + qdev_property_add_static(dev, prop); + } +} + +static void kvm_cpu_accel_class_init(ObjectClass *oc, void *data) +{ + AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); + + acc->cpu_instance_init = kvm_cpu_instance_init; +} + +static const TypeInfo kvm_cpu_accel_type_info = { + .name = ACCEL_CPU_NAME("kvm"), + + .parent = TYPE_ACCEL_CPU, + .class_init = kvm_cpu_accel_class_init, + .abstract = true, +}; +static void kvm_cpu_accel_register_types(void) +{ + type_register_static(&kvm_cpu_accel_type_info); +} +type_init(kvm_cpu_accel_register_types); + +static void riscv_host_cpu_init(Object *obj) +{ + CPURISCVState *env = &RISCV_CPU(obj)->env; + +#if defined(TARGET_RISCV32) + env->misa_mxl_max = env->misa_mxl = MXL_RV32; +#elif defined(TARGET_RISCV64) + env->misa_mxl_max = env->misa_mxl = MXL_RV64; +#endif +} + +static const TypeInfo riscv_kvm_cpu_type_infos[] = { + { + .name = TYPE_RISCV_CPU_HOST, + .parent = TYPE_RISCV_CPU, + .instance_init = riscv_host_cpu_init, + } +}; + +DEFINE_TYPES(riscv_kvm_cpu_type_infos) diff --git a/target/riscv/kvm/kvm_riscv.h b/target/riscv/kvm/kvm_riscv.h new file mode 100644 index 0000000000..8329cfab82 --- /dev/null +++ b/target/riscv/kvm/kvm_riscv.h @@ -0,0 +1,31 @@ +/* + * QEMU KVM support -- RISC-V specific functions. + * + * Copyright (c) 2020 Huawei Technologies Co., Ltd + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#ifndef QEMU_KVM_RISCV_H +#define QEMU_KVM_RISCV_H + +void kvm_riscv_reset_vcpu(RISCVCPU *cpu); +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); +void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, + uint64_t aia_irq_num, uint64_t aia_msi_num, + uint64_t aplic_base, uint64_t imsic_base, + uint64_t guest_num); +void riscv_kvm_aplic_request(void *opaque, int irq, int level); +int kvm_riscv_sync_mpstate_to_kvm(RISCVCPU *cpu, int state); + +#endif diff --git a/target/riscv/kvm/meson.build b/target/riscv/kvm/meson.build new file mode 100644 index 0000000000..7e92415091 --- /dev/null +++ b/target/riscv/kvm/meson.build @@ -0,0 +1 @@ +riscv_ss.add(when: 'CONFIG_KVM', if_true: files('kvm-cpu.c')) diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h deleted file mode 100644 index 8329cfab82..0000000000 --- a/target/riscv/kvm_riscv.h +++ /dev/null @@ -1,31 +0,0 @@ -/* - * QEMU KVM support -- RISC-V specific functions. - * - * Copyright (c) 2020 Huawei Technologies Co., Ltd - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2 or later, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see . - */ - -#ifndef QEMU_KVM_RISCV_H -#define QEMU_KVM_RISCV_H - -void kvm_riscv_reset_vcpu(RISCVCPU *cpu); -void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); -void kvm_riscv_aia_create(MachineState *machine, uint64_t group_shift, - uint64_t aia_irq_num, uint64_t aia_msi_num, - uint64_t aplic_base, uint64_t imsic_base, - uint64_t guest_num); -void riscv_kvm_aplic_request(void *opaque, int irq, int level); -int kvm_riscv_sync_mpstate_to_kvm(RISCVCPU *cpu, int state); - -#endif diff --git a/target/riscv/meson.build b/target/riscv/meson.build index b30ebf5795..a5e0734e7f 100644 --- a/target/riscv/meson.build +++ b/target/riscv/meson.build @@ -24,7 +24,6 @@ riscv_ss.add(files( 'zce_helper.c', 'vcrypto_helper.c' )) -riscv_ss.add(when: 'CONFIG_KVM', if_true: files('kvm.c')) riscv_system_ss = ss.source_set() riscv_system_ss.add(files( @@ -39,6 +38,7 @@ riscv_system_ss.add(files( )) subdir('tcg') +subdir('kvm') target_arch += {'riscv': riscv_ss} target_system_arch += {'riscv': riscv_system_ss} -- cgit v1.2.3 From efa365b711075eee996a657ec4b399e27ec8fa4f Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:03 -0300 Subject: target/riscv/kvm: do not use riscv_cpu_add_misa_properties() riscv_cpu_add_misa_properties() is being used to fill the missing KVM MISA properties but it is a TCG helper that was adapted to do so. We'll move it to tcg-cpu.c in the next patches, meaning that KVM needs to fill the remaining MISA properties on its own. Do not use riscv_cpu_add_misa_properties(). Let's create a new array with all available MISA bits we support that can be read by KVM. The array is zero terminate to allow us to iterate through it without knowing its size. Then, inside kvm_riscv_add_cpu_user_properties(), we'll create all KVM MISA properties as usual and then use this array to add any missing MISA properties with the riscv_cpu_add_kvm_unavail_prop() helper. Note that we're creating misa_bits[], and not using the existing 'riscv_single_letter_exts[]', because the latter is tuned for riscv,isa related functions and it doesn't have all MISA bits we support. Commit 0e2c377023 ("target/riscv: misa to ISA string conversion fix") has the full context. While we're at it, move both satp and the multi-letter extension properties to kvm_riscv_add_cpu_user_properties() as well. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-14-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 2 ++ target/riscv/cpu.h | 3 ++- target/riscv/kvm/kvm-cpu.c | 22 ++++++++++++++-------- 3 files changed, 18 insertions(+), 9 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index d8753240bf..cc439e5839 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -38,6 +38,8 @@ /* RISC-V CPU definitions */ static const char riscv_single_letter_exts[] = "IEMAFDQCPVH"; +const uint32_t misa_bits[] = {RVI, RVE, RVM, RVA, RVF, RVD, RVV, + RVC, RVS, RVU, RVH, RVJ, RVG, 0}; struct isa_ext_data { const char *name; diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index d4b4ac3481..6f041d3333 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -43,7 +43,7 @@ #define RV(x) ((target_ulong)1 << (x - 'A')) /* - * Consider updating misa_ext_info_arr[] and misa_ext_cfgs[] + * Update misa_bits[], misa_ext_info_arr[] and misa_ext_cfgs[] * when adding new MISA bits here. */ #define RVI RV('I') @@ -60,6 +60,7 @@ #define RVJ RV('J') #define RVG RV('G') +extern const uint32_t misa_bits[]; const char *riscv_get_misa_ext_name(uint32_t bit); const char *riscv_get_misa_ext_description(uint32_t bit); diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index 606fdab223..c6615cb807 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -396,6 +396,8 @@ static void kvm_riscv_add_cpu_user_properties(Object *cpu_obj) { int i; + riscv_add_satp_mode_properties(cpu_obj); + for (i = 0; i < ARRAY_SIZE(kvm_misa_ext_cfgs); i++) { KVMCPUConfig *misa_cfg = &kvm_misa_ext_cfgs[i]; int bit = misa_cfg->offset; @@ -411,6 +413,11 @@ static void kvm_riscv_add_cpu_user_properties(Object *cpu_obj) misa_cfg->description); } + for (i = 0; misa_bits[i] != 0; i++) { + const char *ext_name = riscv_get_misa_ext_name(misa_bits[i]); + riscv_cpu_add_kvm_unavail_prop(cpu_obj, ext_name); + } + for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { KVMCPUConfig *multi_cfg = &kvm_multi_ext_cfgs[i]; @@ -427,6 +434,10 @@ static void kvm_riscv_add_cpu_user_properties(Object *cpu_obj) object_property_add(cpu_obj, "cboz_blocksize", "uint16", NULL, kvm_cpu_set_cbomz_blksize, NULL, &kvm_cboz_blocksize); + + riscv_cpu_add_kvm_unavail_prop_array(cpu_obj, riscv_cpu_extensions); + riscv_cpu_add_kvm_unavail_prop_array(cpu_obj, riscv_cpu_vendor_exts); + riscv_cpu_add_kvm_unavail_prop_array(cpu_obj, riscv_cpu_experimental_exts); } static int kvm_riscv_get_regs_core(CPUState *cs) @@ -801,7 +812,7 @@ static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) } } -static void riscv_init_user_properties(Object *cpu_obj) +static void riscv_init_kvm_registers(Object *cpu_obj) { RISCVCPU *cpu = RISCV_CPU(cpu_obj); KVMScratchCPU kvmcpu; @@ -810,7 +821,6 @@ static void riscv_init_user_properties(Object *cpu_obj) return; } - kvm_riscv_add_cpu_user_properties(cpu_obj); kvm_riscv_init_machine_ids(cpu, &kvmcpu); kvm_riscv_init_misa_ext_mask(cpu, &kvmcpu); kvm_riscv_init_multiext_cfg(cpu, &kvmcpu); @@ -1324,13 +1334,9 @@ static void kvm_cpu_instance_init(CPUState *cs) Object *obj = OBJECT(RISCV_CPU(cs)); DeviceState *dev = DEVICE(obj); - riscv_init_user_properties(obj); - riscv_add_satp_mode_properties(obj); - riscv_cpu_add_misa_properties(obj); + riscv_init_kvm_registers(obj); - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_extensions); - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_vendor_exts); - riscv_cpu_add_kvm_unavail_prop_array(obj, riscv_cpu_experimental_exts); + kvm_riscv_add_cpu_user_properties(obj); for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { /* Check if we have a specific KVM handler for the option */ -- cgit v1.2.3 From f51d03b01fac6cf2757d02efe1cc2679b1d133ac Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:04 -0300 Subject: target/riscv/cpu.c: export set_misa() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We'll move riscv_init_max_cpu_extensions() to tcg-cpu.c in the next patch and set_misa() needs to be usable from there. Rename it to riscv_cpu_set_misa() and make it public. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-15-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 34 ++++++++++++++++++---------------- target/riscv/cpu.h | 1 + 2 files changed, 19 insertions(+), 16 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index cc439e5839..10846c2f4b 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -294,7 +294,7 @@ const char *riscv_cpu_get_trap_name(target_ulong cause, bool async) } } -static void set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext) +void riscv_cpu_set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext) { env->misa_mxl_max = env->misa_mxl = mxl; env->misa_ext_mask = env->misa_ext = ext; @@ -399,9 +399,9 @@ static void riscv_any_cpu_init(Object *obj) RISCVCPU *cpu = RISCV_CPU(obj); CPURISCVState *env = &cpu->env; #if defined(TARGET_RISCV32) - set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVU); + riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVU); #elif defined(TARGET_RISCV64) - set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU); + riscv_cpu_set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVU); #endif #ifndef CONFIG_USER_ONLY @@ -428,7 +428,7 @@ static void riscv_max_cpu_init(Object *obj) #ifdef TARGET_RISCV32 mlx = MXL_RV32; #endif - set_misa(env, mlx, 0); + riscv_cpu_set_misa(env, mlx, 0); env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(RISCV_CPU(obj), mlx == MXL_RV32 ? @@ -441,7 +441,7 @@ static void rv64_base_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ - set_misa(env, MXL_RV64, 0); + riscv_cpu_set_misa(env, MXL_RV64, 0); /* Set latest version of privileged specification */ env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY @@ -453,7 +453,8 @@ static void rv64_sifive_u_cpu_init(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); CPURISCVState *env = &cpu->env; - set_misa(env, MXL_RV64, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); + riscv_cpu_set_misa(env, MXL_RV64, + RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); env->priv_ver = PRIV_VERSION_1_10_0; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV39); @@ -471,7 +472,7 @@ static void rv64_sifive_e_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; RISCVCPU *cpu = RISCV_CPU(obj); - set_misa(env, MXL_RV64, RVI | RVM | RVA | RVC | RVU); + riscv_cpu_set_misa(env, MXL_RV64, RVI | RVM | RVA | RVC | RVU); env->priv_ver = PRIV_VERSION_1_10_0; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(cpu, VM_1_10_MBARE); @@ -488,7 +489,7 @@ static void rv64_thead_c906_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; RISCVCPU *cpu = RISCV_CPU(obj); - set_misa(env, MXL_RV64, RVG | RVC | RVS | RVU); + riscv_cpu_set_misa(env, MXL_RV64, RVG | RVC | RVS | RVU); env->priv_ver = PRIV_VERSION_1_11_0; cpu->cfg.ext_zfa = true; @@ -519,7 +520,7 @@ static void rv64_veyron_v1_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; RISCVCPU *cpu = RISCV_CPU(obj); - set_misa(env, MXL_RV64, RVG | RVC | RVS | RVU | RVH); + riscv_cpu_set_misa(env, MXL_RV64, RVG | RVC | RVS | RVU | RVH); env->priv_ver = PRIV_VERSION_1_12_0; /* Enable ISA extensions */ @@ -564,7 +565,7 @@ static void rv128_base_cpu_init(Object *obj) } CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ - set_misa(env, MXL_RV128, 0); + riscv_cpu_set_misa(env, MXL_RV128, 0); /* Set latest version of privileged specification */ env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY @@ -576,7 +577,7 @@ static void rv32_base_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ - set_misa(env, MXL_RV32, 0); + riscv_cpu_set_misa(env, MXL_RV32, 0); /* Set latest version of privileged specification */ env->priv_ver = PRIV_VERSION_LATEST; #ifndef CONFIG_USER_ONLY @@ -588,7 +589,8 @@ static void rv32_sifive_u_cpu_init(Object *obj) { RISCVCPU *cpu = RISCV_CPU(obj); CPURISCVState *env = &cpu->env; - set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); + riscv_cpu_set_misa(env, MXL_RV32, + RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU); env->priv_ver = PRIV_VERSION_1_10_0; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(RISCV_CPU(obj), VM_1_10_SV32); @@ -606,7 +608,7 @@ static void rv32_sifive_e_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; RISCVCPU *cpu = RISCV_CPU(obj); - set_misa(env, MXL_RV32, RVI | RVM | RVA | RVC | RVU); + riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVA | RVC | RVU); env->priv_ver = PRIV_VERSION_1_10_0; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(cpu, VM_1_10_MBARE); @@ -623,7 +625,7 @@ static void rv32_ibex_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; RISCVCPU *cpu = RISCV_CPU(obj); - set_misa(env, MXL_RV32, RVI | RVM | RVC | RVU); + riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVC | RVU); env->priv_ver = PRIV_VERSION_1_11_0; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(cpu, VM_1_10_MBARE); @@ -641,7 +643,7 @@ static void rv32_imafcu_nommu_cpu_init(Object *obj) CPURISCVState *env = &RISCV_CPU(obj)->env; RISCVCPU *cpu = RISCV_CPU(obj); - set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVC | RVU); + riscv_cpu_set_misa(env, MXL_RV32, RVI | RVM | RVA | RVF | RVC | RVU); env->priv_ver = PRIV_VERSION_1_10_0; #ifndef CONFIG_USER_ONLY set_satp_mode_max_supported(cpu, VM_1_10_MBARE); @@ -1614,7 +1616,7 @@ static void riscv_init_max_cpu_extensions(Object *obj) const RISCVCPUMultiExtConfig *prop; /* Enable RVG, RVJ and RVV that are disabled by default */ - set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); + riscv_cpu_set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { isa_ext_update_enabled(cpu, prop->offset, true); diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 6f041d3333..7cc9f3d1fc 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -713,6 +713,7 @@ void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en); bool cpu_cfg_ext_is_user_set(uint32_t ext_offset); bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset); int cpu_cfg_ext_get_min_version(uint32_t ext_offset); +void riscv_cpu_set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext); void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu); typedef struct RISCVCPUMultiExtConfig { -- cgit v1.2.3 From fce8bb5d088c655be18b1642e716489df608a0c4 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:05 -0300 Subject: target/riscv/tcg: introduce tcg_cpu_instance_init() tcg_cpu_instance_init() will be the 'cpu_instance_init' impl for the TCG accelerator. It'll be called from within riscv_cpu_post_init(), via accel_cpu_instance_init(), similar to what happens with KVM. In fact, to preserve behavior, the implementation will be similar to what riscv_cpu_post_init() already does. In this patch we'll move riscv_cpu_add_user_properties() and riscv_init_max_cpu_extensions() and all their dependencies to tcg-cpu.c. All multi-extension properties code was moved. The 'multi_ext_user_opts' hash table was also moved to tcg-cpu.c since it's a TCG only structure, meaning that we won't have to worry about initializing a TCG hash table when running a KVM CPU anymore. riscv_cpu_add_user_properties() will remain in cpu.c for now due to how much code it requires to be moved at the same time. We'll do that in the next patch. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-16-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 150 --------------------------------------------- target/riscv/cpu.h | 1 - target/riscv/tcg/tcg-cpu.c | 149 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 149 insertions(+), 151 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 10846c2f4b..40f9ad84f6 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -162,9 +162,6 @@ static const struct isa_ext_data isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(xventanacondops, PRIV_VERSION_1_12_0, ext_XVentanaCondOps), }; -/* Hash that stores user set extensions */ -static GHashTable *multi_ext_user_opts; - bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset) { bool *ext_enabled = (void *)&cpu->cfg + ext_offset; @@ -194,12 +191,6 @@ int cpu_cfg_ext_get_min_version(uint32_t ext_offset) g_assert_not_reached(); } -bool cpu_cfg_ext_is_user_set(uint32_t ext_offset) -{ - return g_hash_table_contains(multi_ext_user_opts, - GUINT_TO_POINTER(ext_offset)); -} - const char * const riscv_int_regnames[] = { "x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1", "x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3", @@ -280,9 +271,6 @@ static const char * const riscv_intr_names[] = { "reserved" }; -static void riscv_cpu_add_user_properties(Object *obj); -static void riscv_init_max_cpu_extensions(Object *obj); - const char *riscv_cpu_get_trap_name(target_ulong cause, bool async) { if (async) { @@ -1206,32 +1194,9 @@ static bool riscv_cpu_is_dynamic(Object *cpu_obj) return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL; } -static bool riscv_cpu_has_max_extensions(Object *cpu_obj) -{ - return object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_MAX) != NULL; -} - -static bool riscv_cpu_has_user_properties(Object *cpu_obj) -{ - if (kvm_enabled() && - object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_HOST) != NULL) { - return true; - } - - return riscv_cpu_is_dynamic(cpu_obj); -} - static void riscv_cpu_post_init(Object *obj) { accel_cpu_instance_init(CPU(obj)); - - if (tcg_enabled() && riscv_cpu_has_user_properties(obj)) { - riscv_cpu_add_user_properties(obj); - } - - if (riscv_cpu_has_max_extensions(obj)) { - riscv_init_max_cpu_extensions(obj); - } } static void riscv_cpu_init(Object *obj) @@ -1240,8 +1205,6 @@ static void riscv_cpu_init(Object *obj) qdev_init_gpio_in(DEVICE(obj), riscv_cpu_set_irq, IRQ_LOCAL_MAX + IRQ_LOCAL_GUEST_MAX); #endif /* CONFIG_USER_ONLY */ - - multi_ext_user_opts = g_hash_table_new(NULL, g_direct_equal); } typedef struct RISCVCPUMisaExtConfig { @@ -1527,119 +1490,6 @@ Property riscv_cpu_options[] = { DEFINE_PROP_END_OF_LIST(), }; -static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name, - void *opaque, Error **errp) -{ - const RISCVCPUMultiExtConfig *multi_ext_cfg = opaque; - bool value; - - if (!visit_type_bool(v, name, &value, errp)) { - return; - } - - isa_ext_update_enabled(RISCV_CPU(obj), multi_ext_cfg->offset, value); - - g_hash_table_insert(multi_ext_user_opts, - GUINT_TO_POINTER(multi_ext_cfg->offset), - (gpointer)value); -} - -static void cpu_get_multi_ext_cfg(Object *obj, Visitor *v, const char *name, - void *opaque, Error **errp) -{ - const RISCVCPUMultiExtConfig *multi_ext_cfg = opaque; - bool value = isa_ext_is_enabled(RISCV_CPU(obj), multi_ext_cfg->offset); - - visit_type_bool(v, name, &value, errp); -} - -static void cpu_add_multi_ext_prop(Object *cpu_obj, - const RISCVCPUMultiExtConfig *multi_cfg) -{ - object_property_add(cpu_obj, multi_cfg->name, "bool", - cpu_get_multi_ext_cfg, - cpu_set_multi_ext_cfg, - NULL, (void *)multi_cfg); - - /* - * Set def val directly instead of using - * object_property_set_bool() to save the set() - * callback hash for user inputs. - */ - isa_ext_update_enabled(RISCV_CPU(cpu_obj), multi_cfg->offset, - multi_cfg->enabled); -} - -static void riscv_cpu_add_multiext_prop_array(Object *obj, - const RISCVCPUMultiExtConfig *array) -{ - const RISCVCPUMultiExtConfig *prop; - - g_assert(array); - - for (prop = array; prop && prop->name; prop++) { - cpu_add_multi_ext_prop(obj, prop); - } -} - -/* - * Add CPU properties with user-facing flags. - * - * This will overwrite existing env->misa_ext values with the - * defaults set via riscv_cpu_add_misa_properties(). - */ -static void riscv_cpu_add_user_properties(Object *obj) -{ -#ifndef CONFIG_USER_ONLY - riscv_add_satp_mode_properties(obj); -#endif - - riscv_cpu_add_misa_properties(obj); - - riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_extensions); - riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_vendor_exts); - riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_experimental_exts); - - for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { - qdev_property_add_static(DEVICE(obj), prop); - } -} - -/* - * The 'max' type CPU will have all possible ratified - * non-vendor extensions enabled. - */ -static void riscv_init_max_cpu_extensions(Object *obj) -{ - RISCVCPU *cpu = RISCV_CPU(obj); - CPURISCVState *env = &cpu->env; - const RISCVCPUMultiExtConfig *prop; - - /* Enable RVG, RVJ and RVV that are disabled by default */ - riscv_cpu_set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); - - for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { - isa_ext_update_enabled(cpu, prop->offset, true); - } - - /* set vector version */ - env->vext_ver = VEXT_VERSION_1_00_0; - - /* Zfinx is not compatible with F. Disable it */ - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zfinx), false); - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zdinx), false); - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zhinx), false); - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zhinxmin), false); - - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zce), false); - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcmp), false); - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcmt), false); - - if (env->misa_mxl != MXL_RV32) { - isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcf), false); - } -} - static Property riscv_cpu_properties[] = { DEFINE_PROP_BOOL("debug", RISCVCPU, cfg.debug, true), diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 7cc9f3d1fc..9d41beafec 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -710,7 +710,6 @@ enum riscv_pmu_event_idx { /* used by tcg/tcg-cpu.c*/ void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en); -bool cpu_cfg_ext_is_user_set(uint32_t ext_offset); bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset); int cpu_cfg_ext_get_min_version(uint32_t ext_offset); void riscv_cpu_set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext); diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index c92dfc20cb..30740ba030 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -24,6 +24,7 @@ #include "pmu.h" #include "time_helper.h" #include "qapi/error.h" +#include "qapi/visitor.h" #include "qemu/accel.h" #include "qemu/error-report.h" #include "qemu/log.h" @@ -31,6 +32,15 @@ #include "hw/core/tcg-cpu-ops.h" #include "tcg/tcg.h" +/* Hash that stores user set extensions */ +static GHashTable *multi_ext_user_opts; + +static bool cpu_cfg_ext_is_user_set(uint32_t ext_offset) +{ + return g_hash_table_contains(multi_ext_user_opts, + GUINT_TO_POINTER(ext_offset)); +} + static void riscv_cpu_synchronize_from_tb(CPUState *cs, const TranslationBlock *tb) { @@ -570,6 +580,144 @@ static bool tcg_cpu_realize(CPUState *cs, Error **errp) return true; } +static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + const RISCVCPUMultiExtConfig *multi_ext_cfg = opaque; + bool value; + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + + isa_ext_update_enabled(RISCV_CPU(obj), multi_ext_cfg->offset, value); + + g_hash_table_insert(multi_ext_user_opts, + GUINT_TO_POINTER(multi_ext_cfg->offset), + (gpointer)value); +} + +static void cpu_get_multi_ext_cfg(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + const RISCVCPUMultiExtConfig *multi_ext_cfg = opaque; + bool value = isa_ext_is_enabled(RISCV_CPU(obj), multi_ext_cfg->offset); + + visit_type_bool(v, name, &value, errp); +} + +static void cpu_add_multi_ext_prop(Object *cpu_obj, + const RISCVCPUMultiExtConfig *multi_cfg) +{ + object_property_add(cpu_obj, multi_cfg->name, "bool", + cpu_get_multi_ext_cfg, + cpu_set_multi_ext_cfg, + NULL, (void *)multi_cfg); + + /* + * Set def val directly instead of using + * object_property_set_bool() to save the set() + * callback hash for user inputs. + */ + isa_ext_update_enabled(RISCV_CPU(cpu_obj), multi_cfg->offset, + multi_cfg->enabled); +} + +static void riscv_cpu_add_multiext_prop_array(Object *obj, + const RISCVCPUMultiExtConfig *array) +{ + const RISCVCPUMultiExtConfig *prop; + + g_assert(array); + + for (prop = array; prop && prop->name; prop++) { + cpu_add_multi_ext_prop(obj, prop); + } +} + +/* + * Add CPU properties with user-facing flags. + * + * This will overwrite existing env->misa_ext values with the + * defaults set via riscv_cpu_add_misa_properties(). + */ +static void riscv_cpu_add_user_properties(Object *obj) +{ +#ifndef CONFIG_USER_ONLY + riscv_add_satp_mode_properties(obj); +#endif + + riscv_cpu_add_misa_properties(obj); + + riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_extensions); + riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_vendor_exts); + riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_experimental_exts); + + for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { + qdev_property_add_static(DEVICE(obj), prop); + } +} + +/* + * The 'max' type CPU will have all possible ratified + * non-vendor extensions enabled. + */ +static void riscv_init_max_cpu_extensions(Object *obj) +{ + RISCVCPU *cpu = RISCV_CPU(obj); + CPURISCVState *env = &cpu->env; + const RISCVCPUMultiExtConfig *prop; + + /* Enable RVG, RVJ and RVV that are disabled by default */ + riscv_cpu_set_misa(env, env->misa_mxl, env->misa_ext | RVG | RVJ | RVV); + + for (prop = riscv_cpu_extensions; prop && prop->name; prop++) { + isa_ext_update_enabled(cpu, prop->offset, true); + } + + /* set vector version */ + env->vext_ver = VEXT_VERSION_1_00_0; + + /* Zfinx is not compatible with F. Disable it */ + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zfinx), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zdinx), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zhinx), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zhinxmin), false); + + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zce), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcmp), false); + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcmt), false); + + if (env->misa_mxl != MXL_RV32) { + isa_ext_update_enabled(cpu, CPU_CFG_OFFSET(ext_zcf), false); + } +} + +static bool riscv_cpu_has_max_extensions(Object *cpu_obj) +{ + return object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_MAX) != NULL; +} + +static bool riscv_cpu_has_user_properties(Object *cpu_obj) +{ + return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL; +} + +static void tcg_cpu_instance_init(CPUState *cs) +{ + RISCVCPU *cpu = RISCV_CPU(cs); + Object *obj = OBJECT(cpu); + + if (riscv_cpu_has_user_properties(obj)) { + multi_ext_user_opts = g_hash_table_new(NULL, g_direct_equal); + riscv_cpu_add_user_properties(obj); + } + + if (riscv_cpu_has_max_extensions(obj)) { + riscv_init_max_cpu_extensions(obj); + } +} + static void tcg_cpu_init_ops(AccelCPUClass *accel_cpu, CPUClass *cc) { /* @@ -588,6 +736,7 @@ static void tcg_cpu_accel_class_init(ObjectClass *oc, void *data) AccelCPUClass *acc = ACCEL_CPU_CLASS(oc); acc->cpu_class_init = tcg_cpu_class_init; + acc->cpu_instance_init = tcg_cpu_instance_init; acc->cpu_target_realize = tcg_cpu_realize; } -- cgit v1.2.3 From 1dbb6104ffb428f3a559855a49c28b91c8d3b401 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:06 -0300 Subject: target/riscv/cpu.c: make misa_ext_cfgs[] 'const' The array isn't marked as 'const' because we're initializing their elements in riscv_cpu_add_misa_properties(), 'name' and 'description' fields. In a closer look we can see that we're not using these 2 fields after creating the MISA properties. And we can create the properties by using riscv_get_misa_ext_name() and riscv_get_misa_ext_description() directly. Remove the 'name' and 'description' fields from RISCVCPUMisaExtConfig and make misa_ext_cfgs[] a const array. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-17-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 21 ++++++++------------- 1 file changed, 8 insertions(+), 13 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 40f9ad84f6..1c42e2590e 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1208,8 +1208,6 @@ static void riscv_cpu_init(Object *obj) } typedef struct RISCVCPUMisaExtConfig { - const char *name; - const char *description; target_ulong misa_bit; bool enabled; } RISCVCPUMisaExtConfig; @@ -1313,7 +1311,7 @@ const char *riscv_get_misa_ext_description(uint32_t bit) #define MISA_CFG(_bit, _enabled) \ {.misa_bit = _bit, .enabled = _enabled} -static RISCVCPUMisaExtConfig misa_ext_cfgs[] = { +static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = { MISA_CFG(RVA, true), MISA_CFG(RVC, true), MISA_CFG(RVD, true), @@ -1340,25 +1338,22 @@ void riscv_cpu_add_misa_properties(Object *cpu_obj) int i; for (i = 0; i < ARRAY_SIZE(misa_ext_cfgs); i++) { - RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i]; + const RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i]; int bit = misa_cfg->misa_bit; - - misa_cfg->name = riscv_get_misa_ext_name(bit); - misa_cfg->description = riscv_get_misa_ext_description(bit); + const char *name = riscv_get_misa_ext_name(bit); + const char *desc = riscv_get_misa_ext_description(bit); /* Check if KVM already created the property */ - if (object_property_find(cpu_obj, misa_cfg->name)) { + if (object_property_find(cpu_obj, name)) { continue; } - object_property_add(cpu_obj, misa_cfg->name, "bool", + object_property_add(cpu_obj, name, "bool", cpu_get_misa_ext_cfg, cpu_set_misa_ext_cfg, NULL, (void *)misa_cfg); - object_property_set_description(cpu_obj, misa_cfg->name, - misa_cfg->description); - object_property_set_bool(cpu_obj, misa_cfg->name, - misa_cfg->enabled, NULL); + object_property_set_description(cpu_obj, name, desc); + object_property_set_bool(cpu_obj, name, misa_cfg->enabled, NULL); } } -- cgit v1.2.3 From 4de9151b20ad0b33ea975e84b437bc15a804375d Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:07 -0300 Subject: target/riscv/tcg: move riscv_cpu_add_misa_properties() to tcg-cpu.c All code related to MISA TCG properties is also moved. At this point, all TCG properties handling is done in tcg-cpu.c, all KVM properties handling is done in kvm-cpu.c. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-18-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 90 ---------------------------------------------- target/riscv/cpu.h | 1 - target/riscv/tcg/tcg-cpu.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 90 insertions(+), 91 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 1c42e2590e..d758d61ff8 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1207,47 +1207,6 @@ static void riscv_cpu_init(Object *obj) #endif /* CONFIG_USER_ONLY */ } -typedef struct RISCVCPUMisaExtConfig { - target_ulong misa_bit; - bool enabled; -} RISCVCPUMisaExtConfig; - -static void cpu_set_misa_ext_cfg(Object *obj, Visitor *v, const char *name, - void *opaque, Error **errp) -{ - const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque; - target_ulong misa_bit = misa_ext_cfg->misa_bit; - RISCVCPU *cpu = RISCV_CPU(obj); - CPURISCVState *env = &cpu->env; - bool value; - - if (!visit_type_bool(v, name, &value, errp)) { - return; - } - - if (value) { - env->misa_ext |= misa_bit; - env->misa_ext_mask |= misa_bit; - } else { - env->misa_ext &= ~misa_bit; - env->misa_ext_mask &= ~misa_bit; - } -} - -static void cpu_get_misa_ext_cfg(Object *obj, Visitor *v, const char *name, - void *opaque, Error **errp) -{ - const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque; - target_ulong misa_bit = misa_ext_cfg->misa_bit; - RISCVCPU *cpu = RISCV_CPU(obj); - CPURISCVState *env = &cpu->env; - bool value; - - value = env->misa_ext & misa_bit; - - visit_type_bool(v, name, &value, errp); -} - typedef struct misa_ext_info { const char *name; const char *description; @@ -1308,55 +1267,6 @@ const char *riscv_get_misa_ext_description(uint32_t bit) return val; } -#define MISA_CFG(_bit, _enabled) \ - {.misa_bit = _bit, .enabled = _enabled} - -static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = { - MISA_CFG(RVA, true), - MISA_CFG(RVC, true), - MISA_CFG(RVD, true), - MISA_CFG(RVF, true), - MISA_CFG(RVI, true), - MISA_CFG(RVE, false), - MISA_CFG(RVM, true), - MISA_CFG(RVS, true), - MISA_CFG(RVU, true), - MISA_CFG(RVH, true), - MISA_CFG(RVJ, false), - MISA_CFG(RVV, false), - MISA_CFG(RVG, false), -}; - -/* - * We do not support user choice tracking for MISA - * extensions yet because, so far, we do not silently - * change MISA bits during realize() (RVG enables MISA - * bits but the user is warned about it). - */ -void riscv_cpu_add_misa_properties(Object *cpu_obj) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(misa_ext_cfgs); i++) { - const RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i]; - int bit = misa_cfg->misa_bit; - const char *name = riscv_get_misa_ext_name(bit); - const char *desc = riscv_get_misa_ext_description(bit); - - /* Check if KVM already created the property */ - if (object_property_find(cpu_obj, name)) { - continue; - } - - object_property_add(cpu_obj, name, "bool", - cpu_get_misa_ext_cfg, - cpu_set_misa_ext_cfg, - NULL, (void *)misa_cfg); - object_property_set_description(cpu_obj, name, desc); - object_property_set_bool(cpu_obj, name, misa_cfg->enabled, NULL); - } -} - #define MULTI_EXT_CFG_BOOL(_name, _prop, _defval) \ {.name = _name, .offset = CPU_CFG_OFFSET(_prop), \ .enabled = _defval} diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 9d41beafec..089c7e6d95 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -726,7 +726,6 @@ extern const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[]; extern const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[]; extern Property riscv_cpu_options[]; -void riscv_cpu_add_misa_properties(Object *cpu_obj); void riscv_add_satp_mode_properties(Object *obj); /* CSR function table */ diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 30740ba030..ef981ad0ce 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -580,6 +580,96 @@ static bool tcg_cpu_realize(CPUState *cs, Error **errp) return true; } +typedef struct RISCVCPUMisaExtConfig { + target_ulong misa_bit; + bool enabled; +} RISCVCPUMisaExtConfig; + +static void cpu_set_misa_ext_cfg(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque; + target_ulong misa_bit = misa_ext_cfg->misa_bit; + RISCVCPU *cpu = RISCV_CPU(obj); + CPURISCVState *env = &cpu->env; + bool value; + + if (!visit_type_bool(v, name, &value, errp)) { + return; + } + + if (value) { + env->misa_ext |= misa_bit; + env->misa_ext_mask |= misa_bit; + } else { + env->misa_ext &= ~misa_bit; + env->misa_ext_mask &= ~misa_bit; + } +} + +static void cpu_get_misa_ext_cfg(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + const RISCVCPUMisaExtConfig *misa_ext_cfg = opaque; + target_ulong misa_bit = misa_ext_cfg->misa_bit; + RISCVCPU *cpu = RISCV_CPU(obj); + CPURISCVState *env = &cpu->env; + bool value; + + value = env->misa_ext & misa_bit; + + visit_type_bool(v, name, &value, errp); +} + +#define MISA_CFG(_bit, _enabled) \ + {.misa_bit = _bit, .enabled = _enabled} + +static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = { + MISA_CFG(RVA, true), + MISA_CFG(RVC, true), + MISA_CFG(RVD, true), + MISA_CFG(RVF, true), + MISA_CFG(RVI, true), + MISA_CFG(RVE, false), + MISA_CFG(RVM, true), + MISA_CFG(RVS, true), + MISA_CFG(RVU, true), + MISA_CFG(RVH, true), + MISA_CFG(RVJ, false), + MISA_CFG(RVV, false), + MISA_CFG(RVG, false), +}; + +/* + * We do not support user choice tracking for MISA + * extensions yet because, so far, we do not silently + * change MISA bits during realize() (RVG enables MISA + * bits but the user is warned about it). + */ +static void riscv_cpu_add_misa_properties(Object *cpu_obj) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(misa_ext_cfgs); i++) { + const RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i]; + int bit = misa_cfg->misa_bit; + const char *name = riscv_get_misa_ext_name(bit); + const char *desc = riscv_get_misa_ext_description(bit); + + /* Check if KVM already created the property */ + if (object_property_find(cpu_obj, name)) { + continue; + } + + object_property_add(cpu_obj, name, "bool", + cpu_get_misa_ext_cfg, + cpu_set_misa_ext_cfg, + NULL, (void *)misa_cfg); + object_property_set_description(cpu_obj, name, desc); + object_property_set_bool(cpu_obj, name, misa_cfg->enabled, NULL); + } +} + static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { -- cgit v1.2.3 From 7935e2c49c1ecb7b106d62bd91791cc02eea71ef Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:08 -0300 Subject: target/riscv/cpu.c: export isa_edata_arr[] This array will be read by the TCG accel class, allowing it to handle priv spec verifications on its own. The array will remain here in cpu.c because it's also used by the riscv,isa string function. To export it we'll finish it with an empty element since ARRAY_SIZE() won't work outside of cpu.c. Get rid of its ARRAY_SIZE() usage now to alleviate the changes for the next patch. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Message-ID: <20230925175709.35696-19-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 47 +++++++++++++++++++++-------------------------- target/riscv/cpu.h | 7 +++++++ 2 files changed, 28 insertions(+), 26 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index d758d61ff8..989610ff90 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -41,15 +41,6 @@ static const char riscv_single_letter_exts[] = "IEMAFDQCPVH"; const uint32_t misa_bits[] = {RVI, RVE, RVM, RVA, RVF, RVD, RVV, RVC, RVS, RVU, RVH, RVJ, RVG, 0}; -struct isa_ext_data { - const char *name; - int min_version; - int ext_enable_offset; -}; - -#define ISA_EXT_DATA_ENTRY(_name, _min_ver, _prop) \ - {#_name, _min_ver, CPU_CFG_OFFSET(_prop)} - /* * From vector_helper.c * Note that vector data is stored in host-endian 64-bit chunks, @@ -61,6 +52,9 @@ struct isa_ext_data { #define BYTE(x) (x) #endif +#define ISA_EXT_DATA_ENTRY(_name, _min_ver, _prop) \ + {#_name, _min_ver, CPU_CFG_OFFSET(_prop)} + /* * Here are the ordering rules of extension naming defined by RISC-V * specification : @@ -81,7 +75,7 @@ struct isa_ext_data { * Single letter extensions are checked in riscv_cpu_validate_misa_priv() * instead. */ -static const struct isa_ext_data isa_edata_arr[] = { +const RISCVIsaExtData isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(zicbom, PRIV_VERSION_1_12_0, ext_icbom), ISA_EXT_DATA_ENTRY(zicboz, PRIV_VERSION_1_12_0, ext_icboz), ISA_EXT_DATA_ENTRY(zicond, PRIV_VERSION_1_12_0, ext_zicond), @@ -160,6 +154,8 @@ static const struct isa_ext_data isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(xtheadmempair, PRIV_VERSION_1_11_0, ext_xtheadmempair), ISA_EXT_DATA_ENTRY(xtheadsync, PRIV_VERSION_1_11_0, ext_xtheadsync), ISA_EXT_DATA_ENTRY(xventanacondops, PRIV_VERSION_1_12_0, ext_XVentanaCondOps), + + DEFINE_PROP_END_OF_LIST(), }; bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset) @@ -178,14 +174,14 @@ void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en) int cpu_cfg_ext_get_min_version(uint32_t ext_offset) { - int i; + const RISCVIsaExtData *edata; - for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { - if (isa_edata_arr[i].ext_enable_offset != ext_offset) { + for (edata = isa_edata_arr; edata && edata->name; edata++) { + if (edata->ext_enable_offset != ext_offset) { continue; } - return isa_edata_arr[i].min_version; + return edata->min_version; } g_assert_not_reached(); @@ -932,22 +928,21 @@ static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) { CPURISCVState *env = &cpu->env; - int i; + const RISCVIsaExtData *edata; /* Force disable extensions if priv spec version does not match */ - for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { - if (isa_ext_is_enabled(cpu, isa_edata_arr[i].ext_enable_offset) && - (env->priv_ver < isa_edata_arr[i].min_version)) { - isa_ext_update_enabled(cpu, isa_edata_arr[i].ext_enable_offset, - false); + for (edata = isa_edata_arr; edata && edata->name; edata++) { + if (isa_ext_is_enabled(cpu, edata->ext_enable_offset) && + (env->priv_ver < edata->min_version)) { + isa_ext_update_enabled(cpu, edata->ext_enable_offset, false); #ifndef CONFIG_USER_ONLY warn_report("disabling %s extension for hart 0x" TARGET_FMT_lx " because privilege spec version does not match", - isa_edata_arr[i].name, env->mhartid); + edata->name, env->mhartid); #else warn_report("disabling %s extension because " "privilege spec version does not match", - isa_edata_arr[i].name); + edata->name); #endif } } @@ -1615,13 +1610,13 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data) static void riscv_isa_string_ext(RISCVCPU *cpu, char **isa_str, int max_str_len) { + const RISCVIsaExtData *edata; char *old = *isa_str; char *new = *isa_str; - int i; - for (i = 0; i < ARRAY_SIZE(isa_edata_arr); i++) { - if (isa_ext_is_enabled(cpu, isa_edata_arr[i].ext_enable_offset)) { - new = g_strconcat(old, "_", isa_edata_arr[i].name, NULL); + for (edata = isa_edata_arr; edata && edata->name; edata++) { + if (isa_ext_is_enabled(cpu, edata->ext_enable_offset)) { + new = g_strconcat(old, "_", edata->name, NULL); g_free(old); old = new; } diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 089c7e6d95..6eef1f697e 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -726,6 +726,13 @@ extern const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[]; extern const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[]; extern Property riscv_cpu_options[]; +typedef struct isa_ext_data { + const char *name; + int min_version; + int ext_enable_offset; +} RISCVIsaExtData; +extern const RISCVIsaExtData isa_edata_arr[]; + void riscv_add_satp_mode_properties(Object *obj); /* CSR function table */ -- cgit v1.2.3 From 31778448f2c39565062014ae89ca8c2f82522fe5 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 25 Sep 2023 14:57:09 -0300 Subject: target/riscv/cpu: move priv spec functions to tcg-cpu.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Priv spec validation is TCG specific. Move it to the TCG accel class. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Andrew Jones Reviewed-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20230925175709.35696-20-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 38 -------------------------------------- target/riscv/cpu.h | 2 -- target/riscv/tcg/tcg-cpu.c | 38 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 38 insertions(+), 40 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 989610ff90..a7cc7aa6e2 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -172,21 +172,6 @@ void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en) *ext_enabled = en; } -int cpu_cfg_ext_get_min_version(uint32_t ext_offset) -{ - const RISCVIsaExtData *edata; - - for (edata = isa_edata_arr; edata && edata->name; edata++) { - if (edata->ext_enable_offset != ext_offset) { - continue; - } - - return edata->min_version; - } - - g_assert_not_reached(); -} - const char * const riscv_int_regnames[] = { "x0/zero", "x1/ra", "x2/sp", "x3/gp", "x4/tp", "x5/t0", "x6/t1", "x7/t2", "x8/s0", "x9/s1", "x10/a0", "x11/a1", "x12/a2", "x13/a3", @@ -925,29 +910,6 @@ static void riscv_cpu_disas_set_info(CPUState *s, disassemble_info *info) } } -void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) -{ - CPURISCVState *env = &cpu->env; - const RISCVIsaExtData *edata; - - /* Force disable extensions if priv spec version does not match */ - for (edata = isa_edata_arr; edata && edata->name; edata++) { - if (isa_ext_is_enabled(cpu, edata->ext_enable_offset) && - (env->priv_ver < edata->min_version)) { - isa_ext_update_enabled(cpu, edata->ext_enable_offset, false); -#ifndef CONFIG_USER_ONLY - warn_report("disabling %s extension for hart 0x" TARGET_FMT_lx - " because privilege spec version does not match", - edata->name, env->mhartid); -#else - warn_report("disabling %s extension because " - "privilege spec version does not match", - edata->name); -#endif - } - } -} - #ifndef CONFIG_USER_ONLY static void riscv_cpu_satp_mode_finalize(RISCVCPU *cpu, Error **errp) { diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 6eef1f697e..7291b84756 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -711,9 +711,7 @@ enum riscv_pmu_event_idx { /* used by tcg/tcg-cpu.c*/ void isa_ext_update_enabled(RISCVCPU *cpu, uint32_t ext_offset, bool en); bool isa_ext_is_enabled(RISCVCPU *cpu, uint32_t ext_offset); -int cpu_cfg_ext_get_min_version(uint32_t ext_offset); void riscv_cpu_set_misa(CPURISCVState *env, RISCVMXL mxl, uint32_t ext); -void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu); typedef struct RISCVCPUMultiExtConfig { const char *name; diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index ef981ad0ce..a021ec833d 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -99,6 +99,21 @@ static const struct TCGCPUOps riscv_tcg_ops = { #endif /* !CONFIG_USER_ONLY */ }; +static int cpu_cfg_ext_get_min_version(uint32_t ext_offset) +{ + const RISCVIsaExtData *edata; + + for (edata = isa_edata_arr; edata && edata->name; edata++) { + if (edata->ext_enable_offset != ext_offset) { + continue; + } + + return edata->min_version; + } + + g_assert_not_reached(); +} + static void cpu_cfg_ext_auto_update(RISCVCPU *cpu, uint32_t ext_offset, bool value) { @@ -226,6 +241,29 @@ static void riscv_cpu_validate_v(CPURISCVState *env, RISCVCPUConfig *cfg, } } +static void riscv_cpu_disable_priv_spec_isa_exts(RISCVCPU *cpu) +{ + CPURISCVState *env = &cpu->env; + const RISCVIsaExtData *edata; + + /* Force disable extensions if priv spec version does not match */ + for (edata = isa_edata_arr; edata && edata->name; edata++) { + if (isa_ext_is_enabled(cpu, edata->ext_enable_offset) && + (env->priv_ver < edata->min_version)) { + isa_ext_update_enabled(cpu, edata->ext_enable_offset, false); +#ifndef CONFIG_USER_ONLY + warn_report("disabling %s extension for hart 0x" TARGET_FMT_lx + " because privilege spec version does not match", + edata->name, env->mhartid); +#else + warn_report("disabling %s extension because " + "privilege spec version does not match", + edata->name); +#endif + } + } +} + /* * Check consistency between chosen extensions while setting * cpu->cfg accordingly. -- cgit v1.2.3 From b933720be22442e6847629fe0dcf24b95cef3d56 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 26 Sep 2023 15:31:08 -0300 Subject: target/riscv: add riscv_cpu_get_name() We'll introduce generic errors that will output a CPU type name via its RISCVCPU pointer. Create a helper for that. Use the helper in tcg_cpu_realizefn() instead of hardcoding the 'host' CPU name. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Message-ID: <20230926183109.165878-2-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/cpu.c | 11 +++++++++++ target/riscv/cpu.h | 1 + target/riscv/tcg/tcg-cpu.c | 4 +++- 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index a7cc7aa6e2..cdeb24cb5e 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -643,6 +643,17 @@ static ObjectClass *riscv_cpu_class_by_name(const char *cpu_model) return oc; } +char *riscv_cpu_get_name(RISCVCPU *cpu) +{ + RISCVCPUClass *rcc = RISCV_CPU_GET_CLASS(cpu); + const char *typename = object_class_get_name(OBJECT_CLASS(rcc)); + + g_assert(g_str_has_suffix(typename, RISCV_CPU_TYPE_SUFFIX)); + + return g_strndup(typename, + strlen(typename) - strlen(RISCV_CPU_TYPE_SUFFIX)); +} + static void riscv_cpu_dump_state(CPUState *cs, FILE *f, int flags) { RISCVCPU *cpu = RISCV_CPU(cs); diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 7291b84756..8298f8bf63 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -730,6 +730,7 @@ typedef struct isa_ext_data { int ext_enable_offset; } RISCVIsaExtData; extern const RISCVIsaExtData isa_edata_arr[]; +char *riscv_cpu_get_name(RISCVCPU *cpu); void riscv_add_satp_mode_properties(Object *obj); diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index a021ec833d..104e91846a 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -563,7 +563,9 @@ static bool tcg_cpu_realize(CPUState *cs, Error **errp) Error *local_err = NULL; if (object_dynamic_cast(OBJECT(cpu), TYPE_RISCV_CPU_HOST)) { - error_setg(errp, "'host' CPU is not compatible with TCG acceleration"); + g_autofree char *name = riscv_cpu_get_name(cpu); + error_setg(errp, "'%s' CPU is not compatible with TCG acceleration", + name); return false; } -- cgit v1.2.3 From eb992b609159212c55ed26971dde7743c956cb7a Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 26 Sep 2023 15:31:09 -0300 Subject: target/riscv/tcg-cpu.c: add extension properties for all cpus At this moment we do not expose extension properties for vendor CPUs because that would allow users to change them via command line. The drawback is that if we were to add an API that shows all CPU properties, e.g. qmp-query-cpu-model-expansion, we won't be able to show extensions state of vendor CPUs. We have the required machinery to create extension properties for vendor CPUs while not allowing users to enable extensions. Disabling existing extensions is allowed since it can be useful for debugging. Change the set() callback cpu_set_multi_ext_cfg() to allow enabling extensions only for generic CPUs. In cpu_add_multi_ext_prop() let's not set the default values for the properties if we're not dealing with generic CPUs, otherwise the values set in cpu_init() of vendor CPUs will be overwritten. And finally, in tcg_cpu_instance_init(), add cpu user properties for all CPUs. For the veyron-v1 CPU, we're now able to disable existing extensions like smstateen: $ ./build/qemu-system-riscv64 --nographic -M virt \ -cpu veyron-v1,smstateen=false But setting extensions that the CPU didn't set during cpu_init(), like V, is not allowed: $ ./build/qemu-system-riscv64 --nographic -M virt \ -cpu veyron-v1,v=true qemu-system-riscv64: can't apply global veyron-v1-riscv-cpu.v=true: 'veyron-v1' CPU does not allow enabling extensions Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Message-ID: <20230926183109.165878-3-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/tcg/tcg-cpu.c | 64 ++++++++++++++++++++++++++++++++++++---------- 1 file changed, 50 insertions(+), 14 deletions(-) diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 104e91846a..2e462e7d11 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -549,6 +549,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) riscv_cpu_disable_priv_spec_isa_exts(cpu); } +static bool riscv_cpu_is_generic(Object *cpu_obj) +{ + return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL; +} + /* * We'll get here via the following path: * @@ -632,13 +637,27 @@ static void cpu_set_misa_ext_cfg(Object *obj, Visitor *v, const char *name, target_ulong misa_bit = misa_ext_cfg->misa_bit; RISCVCPU *cpu = RISCV_CPU(obj); CPURISCVState *env = &cpu->env; - bool value; + bool generic_cpu = riscv_cpu_is_generic(obj); + bool prev_val, value; if (!visit_type_bool(v, name, &value, errp)) { return; } + prev_val = env->misa_ext & misa_bit; + + if (value == prev_val) { + return; + } + if (value) { + if (!generic_cpu) { + g_autofree char *cpuname = riscv_cpu_get_name(cpu); + error_setg(errp, "'%s' CPU does not allow enabling extensions", + cpuname); + return; + } + env->misa_ext |= misa_bit; env->misa_ext_mask |= misa_bit; } else { @@ -688,6 +707,7 @@ static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = { */ static void riscv_cpu_add_misa_properties(Object *cpu_obj) { + bool use_def_vals = riscv_cpu_is_generic(cpu_obj); int i; for (i = 0; i < ARRAY_SIZE(misa_ext_cfgs); i++) { @@ -706,7 +726,9 @@ static void riscv_cpu_add_misa_properties(Object *cpu_obj) cpu_set_misa_ext_cfg, NULL, (void *)misa_cfg); object_property_set_description(cpu_obj, name, desc); - object_property_set_bool(cpu_obj, name, misa_cfg->enabled, NULL); + if (use_def_vals) { + object_property_set_bool(cpu_obj, name, misa_cfg->enabled, NULL); + } } } @@ -714,17 +736,32 @@ static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { const RISCVCPUMultiExtConfig *multi_ext_cfg = opaque; - bool value; + RISCVCPU *cpu = RISCV_CPU(obj); + bool generic_cpu = riscv_cpu_is_generic(obj); + bool prev_val, value; if (!visit_type_bool(v, name, &value, errp)) { return; } - isa_ext_update_enabled(RISCV_CPU(obj), multi_ext_cfg->offset, value); - g_hash_table_insert(multi_ext_user_opts, GUINT_TO_POINTER(multi_ext_cfg->offset), (gpointer)value); + + prev_val = isa_ext_is_enabled(cpu, multi_ext_cfg->offset); + + if (value == prev_val) { + return; + } + + if (value && !generic_cpu) { + g_autofree char *cpuname = riscv_cpu_get_name(cpu); + error_setg(errp, "'%s' CPU does not allow enabling extensions", + cpuname); + return; + } + + isa_ext_update_enabled(cpu, multi_ext_cfg->offset, value); } static void cpu_get_multi_ext_cfg(Object *obj, Visitor *v, const char *name, @@ -739,11 +776,17 @@ static void cpu_get_multi_ext_cfg(Object *obj, Visitor *v, const char *name, static void cpu_add_multi_ext_prop(Object *cpu_obj, const RISCVCPUMultiExtConfig *multi_cfg) { + bool generic_cpu = riscv_cpu_is_generic(cpu_obj); + object_property_add(cpu_obj, multi_cfg->name, "bool", cpu_get_multi_ext_cfg, cpu_set_multi_ext_cfg, NULL, (void *)multi_cfg); + if (!generic_cpu) { + return; + } + /* * Set def val directly instead of using * object_property_set_bool() to save the set() @@ -828,20 +871,13 @@ static bool riscv_cpu_has_max_extensions(Object *cpu_obj) return object_dynamic_cast(cpu_obj, TYPE_RISCV_CPU_MAX) != NULL; } -static bool riscv_cpu_has_user_properties(Object *cpu_obj) -{ - return object_dynamic_cast(cpu_obj, TYPE_RISCV_DYNAMIC_CPU) != NULL; -} - static void tcg_cpu_instance_init(CPUState *cs) { RISCVCPU *cpu = RISCV_CPU(cs); Object *obj = OBJECT(cpu); - if (riscv_cpu_has_user_properties(obj)) { - multi_ext_user_opts = g_hash_table_new(NULL, g_direct_equal); - riscv_cpu_add_user_properties(obj); - } + multi_ext_user_opts = g_hash_table_new(NULL, g_direct_equal); + riscv_cpu_add_user_properties(obj); if (riscv_cpu_has_max_extensions(obj)) { riscv_init_max_cpu_extensions(obj); -- cgit v1.2.3 From 0386f39b46a28da87647075f0fc20da4ba1f6478 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Date: Tue, 3 Oct 2023 09:14:23 +0200 Subject: softmmu: add means to pass an exit code when requesting a shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As of now, the exit code was either EXIT_FAILURE when a panic shutdown was requested or EXIT_SUCCESS otherwise. However, some hardware could want to pass more complex exit codes. Thus, introduce a new shutdown request function allowing that. Signed-off-by: Clément Chigot Reviewed-by: Alistair Francis Message-ID: <20231003071427.188697-2-chigot@adacore.com> Signed-off-by: Alistair Francis --- include/sysemu/runstate.h | 2 ++ system/runstate.c | 12 +++++++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/include/sysemu/runstate.h b/include/sysemu/runstate.h index 08afb97695..c8c2bd8a61 100644 --- a/include/sysemu/runstate.h +++ b/include/sysemu/runstate.h @@ -68,6 +68,8 @@ void qemu_system_wakeup_request(WakeupReason reason, Error **errp); void qemu_system_wakeup_enable(WakeupReason reason, bool enabled); void qemu_register_wakeup_notifier(Notifier *notifier); void qemu_register_wakeup_support(void); +void qemu_system_shutdown_request_with_code(ShutdownCause reason, + int exit_code); void qemu_system_shutdown_request(ShutdownCause reason); void qemu_system_powerdown_request(void); void qemu_register_powerdown_notifier(Notifier *notifier); diff --git a/system/runstate.c b/system/runstate.c index 1652ed0439..363a5ea8dd 100644 --- a/system/runstate.c +++ b/system/runstate.c @@ -385,6 +385,7 @@ void vm_state_notify(bool running, RunState state) static ShutdownCause reset_requested; static ShutdownCause shutdown_requested; +static int shutdown_exit_code = EXIT_SUCCESS; static int shutdown_signal; static pid_t shutdown_pid; static int powerdown_requested; @@ -664,6 +665,13 @@ void qemu_system_killed(int signal, pid_t pid) qemu_notify_event(); } +void qemu_system_shutdown_request_with_code(ShutdownCause reason, + int exit_code) +{ + shutdown_exit_code = exit_code; + qemu_system_shutdown_request(reason); +} + void qemu_system_shutdown_request(ShutdownCause reason) { trace_qemu_system_shutdown_request(reason); @@ -725,7 +733,9 @@ static bool main_loop_should_exit(int *status) if (shutdown_action == SHUTDOWN_ACTION_PAUSE) { vm_stop(RUN_STATE_SHUTDOWN); } else { - if (request == SHUTDOWN_CAUSE_GUEST_PANIC && + if (shutdown_exit_code != EXIT_SUCCESS) { + *status = shutdown_exit_code; + } else if (request == SHUTDOWN_CAUSE_GUEST_PANIC && panic_action == PANIC_ACTION_EXIT_FAILURE) { *status = EXIT_FAILURE; } -- cgit v1.2.3 From 66bbe3e9b46112ec2fe35a7d6e79d8a9bb39d14a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Date: Tue, 3 Oct 2023 09:14:24 +0200 Subject: softmmu: pass the main loop status to gdb "Wxx" packet MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit gdb_exit function aims to close gdb sessions and sends the exit code of the current execution. It's being called by qemu_cleanup once the main loop is over. Until now, the exit code sent was always 0. Now that hardware can shutdown this main loop with custom exit codes, these codes must be transfered to gdb as well. Signed-off-by: Clément Chigot Reviewed-by: Alistair Francis Message-ID: <20231003071427.188697-3-chigot@adacore.com> Signed-off-by: Alistair Francis --- include/sysemu/sysemu.h | 2 +- system/main.c | 2 +- system/runstate.c | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h index 25be2a692e..73a37949c2 100644 --- a/include/sysemu/sysemu.h +++ b/include/sysemu/sysemu.h @@ -101,7 +101,7 @@ bool defaults_enabled(void); void qemu_init(int argc, char **argv); int qemu_main_loop(void); -void qemu_cleanup(void); +void qemu_cleanup(int); extern QemuOptsList qemu_legacy_drive_opts; extern QemuOptsList qemu_common_drive_opts; diff --git a/system/main.c b/system/main.c index 694388bd7f..9b91d21ea8 100644 --- a/system/main.c +++ b/system/main.c @@ -35,7 +35,7 @@ int qemu_default_main(void) int status; status = qemu_main_loop(); - qemu_cleanup(); + qemu_cleanup(status); return status; } diff --git a/system/runstate.c b/system/runstate.c index 363a5ea8dd..ea9d6c2a32 100644 --- a/system/runstate.c +++ b/system/runstate.c @@ -834,9 +834,9 @@ void qemu_init_subsystems(void) } -void qemu_cleanup(void) +void qemu_cleanup(int status) { - gdb_exit(0); + gdb_exit(status); /* * cleaning up the migration object cancels any existing migration -- cgit v1.2.3 From 215128e44bd3095b254e2f3d8ff067eadf166a1d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Date: Tue, 3 Oct 2023 09:14:25 +0200 Subject: hw/misc/sifive_test.c: replace exit calls with proper shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Otherwise, some connections like gdb could be broken before its final packet ("Wxx") is being sent. This part, being done inside qemu_cleanup function, can be reached only when the main loop exits after a shutdown request. Signed-off-by: Clément Chigot Reviewed-by: Alistair Francis Message-ID: <20231003071427.188697-4-chigot@adacore.com> Signed-off-by: Alistair Francis --- hw/misc/sifive_test.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/misc/sifive_test.c b/hw/misc/sifive_test.c index 56df45bfe5..ad688079c4 100644 --- a/hw/misc/sifive_test.c +++ b/hw/misc/sifive_test.c @@ -25,6 +25,7 @@ #include "qemu/module.h" #include "sysemu/runstate.h" #include "hw/misc/sifive_test.h" +#include "sysemu/sysemu.h" static uint64_t sifive_test_read(void *opaque, hwaddr addr, unsigned int size) { @@ -39,9 +40,13 @@ static void sifive_test_write(void *opaque, hwaddr addr, int code = (val64 >> 16) & 0xffff; switch (status) { case FINISHER_FAIL: - exit(code); + qemu_system_shutdown_request_with_code( + SHUTDOWN_CAUSE_GUEST_PANIC, code); + return; case FINISHER_PASS: - exit(0); + qemu_system_shutdown_request_with_code( + SHUTDOWN_CAUSE_GUEST_SHUTDOWN, code); + return; case FINISHER_RESET: qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); return; -- cgit v1.2.3 From 354c96069c4b6af176c03b046087e971ac621177 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Date: Tue, 3 Oct 2023 09:14:26 +0200 Subject: hw/char: riscv_htif: replace exit calls with proper shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Otherwise, some connections like gdb could be broken before its final packet ("Wxx") is being sent. This part, being done inside qemu_cleanup function, can be reached only when the main loop exits after a shutdown request. Signed-off-by: Clément Chigot Reviewed-by: Alistair Francis Message-ID: <20231003071427.188697-5-chigot@adacore.com> Signed-off-by: Alistair Francis --- hw/char/riscv_htif.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/hw/char/riscv_htif.c b/hw/char/riscv_htif.c index 40de6b8b77..9bef60def1 100644 --- a/hw/char/riscv_htif.c +++ b/hw/char/riscv_htif.c @@ -32,6 +32,7 @@ #include "exec/address-spaces.h" #include "exec/tswap.h" #include "sysemu/dma.h" +#include "sysemu/runstate.h" #define RISCV_DEBUG_HTIF 0 #define HTIF_DEBUG(fmt, ...) \ @@ -206,7 +207,9 @@ static void htif_handle_tohost_write(HTIFState *s, uint64_t val_written) g_free(sig_data); } - exit(exit_code); + qemu_system_shutdown_request_with_code( + SHUTDOWN_CAUSE_GUEST_SHUTDOWN, exit_code); + return; } else { uint64_t syscall[8]; cpu_physical_memory_read(payload, syscall, sizeof(syscall)); -- cgit v1.2.3 From e216256ae9fc3d1988e3f1af3f644b4dafb79838 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= Date: Tue, 3 Oct 2023 09:14:27 +0200 Subject: gdbstub: replace exit calls with proper shutdown for softmmu MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Features like net/vhost-vdpa.c are expecting qemu_cleanup to be called to remove their last residuals. Signed-off-by: Clément Chigot Reviewed-by: Alistair Francis Message-ID: <20231003071427.188697-6-chigot@adacore.com> Signed-off-by: Alistair Francis --- gdbstub/gdbstub.c | 5 +++-- gdbstub/system.c | 6 ++++++ gdbstub/user.c | 6 ++++++ include/gdbstub/syscalls.h | 9 +++++++++ 4 files changed, 24 insertions(+), 2 deletions(-) diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c index b1532118d1..1e96a71c0c 100644 --- a/gdbstub/gdbstub.c +++ b/gdbstub/gdbstub.c @@ -1324,7 +1324,7 @@ static void handle_v_kill(GArray *params, void *user_ctx) gdb_put_packet("OK"); error_report("QEMU: Terminated via GDBstub"); gdb_exit(0); - exit(0); + gdb_qemu_exit(0); } static const GdbCmdParseEntry gdb_v_commands_table[] = { @@ -1843,7 +1843,8 @@ static int gdb_handle_packet(const char *line_buf) /* Kill the target */ error_report("QEMU: Terminated via GDBstub"); gdb_exit(0); - exit(0); + gdb_qemu_exit(0); + break; case 'D': { static const GdbCmdParseEntry detach_cmd_desc = { diff --git a/gdbstub/system.c b/gdbstub/system.c index 48976873d2..783ac140b9 100644 --- a/gdbstub/system.c +++ b/gdbstub/system.c @@ -435,6 +435,12 @@ void gdb_exit(int code) qemu_chr_fe_deinit(&gdbserver_system_state.chr, true); } +void gdb_qemu_exit(int code) +{ + qemu_system_shutdown_request_with_code(SHUTDOWN_CAUSE_GUEST_SHUTDOWN, + code); +} + /* * Memory access */ diff --git a/gdbstub/user.c b/gdbstub/user.c index 7ab6e5d975..dbe1d9b887 100644 --- a/gdbstub/user.c +++ b/gdbstub/user.c @@ -113,6 +113,12 @@ void gdb_exit(int code) gdb_put_packet(buf); gdbserver_state.allow_stop_reply = false; } + +} + +void gdb_qemu_exit(int code) +{ + exit(code); } int gdb_handlesig(CPUState *cpu, int sig) diff --git a/include/gdbstub/syscalls.h b/include/gdbstub/syscalls.h index 243eaf8ce4..54ff7245a1 100644 --- a/include/gdbstub/syscalls.h +++ b/include/gdbstub/syscalls.h @@ -110,4 +110,13 @@ int use_gdb_syscalls(void); */ void gdb_exit(int code); +/** + * gdb_qemu_exit: ask qemu to exit + * @code: exit code reported + * + * This requests qemu to exit. This function is allowed to return as + * the exit request might be processed asynchronously by qemu backend. + */ +void gdb_qemu_exit(int code); + #endif /* _SYSCALLS_H_ */ -- cgit v1.2.3 From 082e9e4a58ba80ec056220a2f762a1c6b9a3a96c Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 3 Oct 2023 10:21:47 -0300 Subject: target/riscv/kvm: improve 'init_multiext_cfg' error msg MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Our error message is returning the value of 'ret', which will be always -1 in case of error, and will not be that useful: qemu-system-riscv64: Unable to read ISA_EXT KVM register ssaia, error -1 Improve the error message by outputting 'errno' instead of 'ret'. Use strerrorname_np() to output the error name instead of the error code. This will give us what we need to know right away: qemu-system-riscv64: Unable to read ISA_EXT KVM register ssaia, error code: ENOENT Given that we're going to exit(1) in this condition instead of attempting to recover, remove the 'kvm_riscv_destroy_scratch_vcpu()' call. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20231003132148.797921-2-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/kvm/kvm-cpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index c6615cb807..c3daf74fe9 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -792,8 +792,8 @@ static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) val = false; } else { error_report("Unable to read ISA_EXT KVM register %s, " - "error %d", multi_ext_cfg->name, ret); - kvm_riscv_destroy_scratch_vcpu(kvmcpu); + "error code: %s", multi_ext_cfg->name, + strerrorname_np(errno)); exit(EXIT_FAILURE); } } else { -- cgit v1.2.3 From 608bdebb6075b757e5505f6bbc60c45a54a1390b Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 3 Oct 2023 10:21:48 -0300 Subject: target/riscv/kvm: support KVM_GET_REG_LIST KVM for RISC-V started supporting KVM_GET_REG_LIST in Linux 6.6. It consists of a KVM ioctl() that retrieves a list of all available regs for get_one_reg/set_one_reg. Regs that aren't present in the list aren't supported in the host. This simplifies our lives when initing the KVM regs since we don't have to always attempt a KVM_GET_ONE_REG for all regs QEMU knows. We'll only attempt a get_one_reg() if we're sure the reg is supported, i.e. it was retrieved by KVM_GET_REG_LIST. Any error in get_one_reg() will then always considered fatal, instead of having to handle special error codes that might indicate a non-fatal failure. Start by moving the current kvm_riscv_init_multiext_cfg() logic into a new kvm_riscv_read_multiext_legacy() helper. We'll prioritize using KVM_GET_REG_LIST, so check if we have it available and, in case we don't, use the legacy() logic. Otherwise, retrieve the available reg list and use it to check if the host supports our known KVM regs, doing the usual get_one_reg() for the supported regs and setting cpu->cfg accordingly. Signed-off-by: Daniel Henrique Barboza Acked-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20231003132148.797921-3-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/kvm/kvm-cpu.c | 96 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 95 insertions(+), 1 deletion(-) diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c index c3daf74fe9..090d617627 100644 --- a/target/riscv/kvm/kvm-cpu.c +++ b/target/riscv/kvm/kvm-cpu.c @@ -771,7 +771,8 @@ static void kvm_riscv_read_cbomz_blksize(RISCVCPU *cpu, KVMScratchCPU *kvmcpu, } } -static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) +static void kvm_riscv_read_multiext_legacy(RISCVCPU *cpu, + KVMScratchCPU *kvmcpu) { CPURISCVState *env = &cpu->env; uint64_t val; @@ -812,6 +813,99 @@ static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) } } +static int uint64_cmp(const void *a, const void *b) +{ + uint64_t val1 = *(const uint64_t *)a; + uint64_t val2 = *(const uint64_t *)b; + + if (val1 < val2) { + return -1; + } + + if (val1 > val2) { + return 1; + } + + return 0; +} + +static void kvm_riscv_init_multiext_cfg(RISCVCPU *cpu, KVMScratchCPU *kvmcpu) +{ + KVMCPUConfig *multi_ext_cfg; + struct kvm_one_reg reg; + struct kvm_reg_list rl_struct; + struct kvm_reg_list *reglist; + uint64_t val, reg_id, *reg_search; + int i, ret; + + rl_struct.n = 0; + ret = ioctl(kvmcpu->cpufd, KVM_GET_REG_LIST, &rl_struct); + + /* + * If KVM_GET_REG_LIST isn't supported we'll get errno 22 + * (EINVAL). Use read_legacy() in this case. + */ + if (errno == EINVAL) { + return kvm_riscv_read_multiext_legacy(cpu, kvmcpu); + } else if (errno != E2BIG) { + /* + * E2BIG is an expected error message for the API since we + * don't know the number of registers. The right amount will + * be written in rl_struct.n. + * + * Error out if we get any other errno. + */ + error_report("Error when accessing get-reg-list, code: %s", + strerrorname_np(errno)); + exit(EXIT_FAILURE); + } + + reglist = g_malloc(sizeof(struct kvm_reg_list) + + rl_struct.n * sizeof(uint64_t)); + reglist->n = rl_struct.n; + ret = ioctl(kvmcpu->cpufd, KVM_GET_REG_LIST, reglist); + if (ret) { + error_report("Error when reading KVM_GET_REG_LIST, code %s ", + strerrorname_np(errno)); + exit(EXIT_FAILURE); + } + + /* sort reglist to use bsearch() */ + qsort(®list->reg, reglist->n, sizeof(uint64_t), uint64_cmp); + + for (i = 0; i < ARRAY_SIZE(kvm_multi_ext_cfgs); i++) { + multi_ext_cfg = &kvm_multi_ext_cfgs[i]; + reg_id = kvm_riscv_reg_id(&cpu->env, KVM_REG_RISCV_ISA_EXT, + multi_ext_cfg->kvm_reg_id); + reg_search = bsearch(®_id, reglist->reg, reglist->n, + sizeof(uint64_t), uint64_cmp); + if (!reg_search) { + continue; + } + + reg.id = reg_id; + reg.addr = (uint64_t)&val; + ret = ioctl(kvmcpu->cpufd, KVM_GET_ONE_REG, ®); + if (ret != 0) { + error_report("Unable to read ISA_EXT KVM register %s, " + "error code: %s", multi_ext_cfg->name, + strerrorname_np(errno)); + exit(EXIT_FAILURE); + } + + multi_ext_cfg->supported = true; + kvm_cpu_cfg_set(cpu, multi_ext_cfg, val); + } + + if (cpu->cfg.ext_icbom) { + kvm_riscv_read_cbomz_blksize(cpu, kvmcpu, &kvm_cbom_blocksize); + } + + if (cpu->cfg.ext_icboz) { + kvm_riscv_read_cbomz_blksize(cpu, kvmcpu, &kvm_cboz_blocksize); + } +} + static void riscv_init_kvm_registers(Object *cpu_obj) { RISCVCPU *cpu = RISCV_CPU(cpu_obj); -- cgit v1.2.3 From 9b9741c38f2a92eb99c74f2bf387fc7a12d7f8e2 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Tue, 3 Oct 2023 09:25:39 -0300 Subject: target/riscv/tcg: remove RVG warning Vendor CPUs that set RVG are displaying user warnings about other extensions that RVG must enable, one warning per CPU. E.g.: $ ./build/qemu-system-riscv64 -smp 8 -M virt -cpu veyron-v1 -nographic qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei qemu-system-riscv64: warning: Setting G will also set IMAFD_Zicsr_Zifencei This happens because we decided a while ago that, for simplicity, vendor CPUs could set RVG instead of setting each G extension individually in their cpu_init(). Our warning isn't taking that into account, and we're bugging users with a warning that we're causing ourselves. In a closer look we conclude that this warning is not warranted in any other circumstance since we're just following the ISA [1], which states in chapter 24: "One goal of the RISC-V project is that it be used as a stable software development target. For this purpose, we define a combination of a base ISA (RV32I or RV64I) plus selected standard extensions (IMAFD, Zicsr, Zifencei) as a 'general-purpose' ISA, and we use the abbreviation G for the IMAFDZicsr Zifencei combination of instruction-set extensions." With this in mind, enabling IMAFD_Zicsr_Zifencei if the user explicitly enables 'G' is an expected behavior and the warning is unneeded. Any user caught by surprise should refer to the ISA. Remove the warning when handling RVG. [1] https://github.com/riscv/riscv-isa-manual/releases/download/Ratified-IMAFDQC/riscv-spec-20191213.pdf Reported-by: Paul A. Clarke Suggested-by: Andrew Jones Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20231003122539.775932-1-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- target/riscv/tcg/tcg-cpu.c | 1 - 1 file changed, 1 deletion(-) diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index 2e462e7d11..a042bb6cda 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -293,7 +293,6 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) return; } - warn_report("Setting G will also set IMAFD_Zicsr_Zifencei"); cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_icsr), true); cpu_cfg_ext_auto_update(cpu, CPU_CFG_OFFSET(ext_ifencei), true); -- cgit v1.2.3 From 614c9466a238641480332b707a7a20a3593bdfb7 Mon Sep 17 00:00:00 2001 From: "Richard W.M. Jones" Date: Mon, 9 Oct 2023 13:48:25 +0100 Subject: target/riscv: Use env_archcpu for better performance MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RISCV_CPU(cs) uses a checked cast. When QOM cast debugging is enabled this adds about 5% total overhead when emulating RV64 on x86-64 host. Using a RISC-V guest with 16 vCPUs, 16 GB of guest RAM, virtio-blk disk. The guest has a copy of the qemu source tree. The test involves compiling the qemu source tree with 'make clean; time make -j16'. Before making this change the compile step took 449 & 447 seconds over two consecutive runs. After making this change: 428 & 421 seconds. The saving is over 5%. Thanks: Paolo Bonzini Thanks: Philippe Mathieu-Daudé Signed-off-by: Richard W.M. Jones Reviewed-by: Alistair Francis Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-ID: <20231009124859.3373696-2-rjones@redhat.com> Signed-off-by: Alistair Francis --- target/riscv/cpu_helper.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 3a02079290..8c28241c18 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -65,8 +65,7 @@ int riscv_cpu_mmu_index(CPURISCVState *env, bool ifetch) void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, uint64_t *cs_base, uint32_t *pflags) { - CPUState *cs = env_cpu(env); - RISCVCPU *cpu = RISCV_CPU(cs); + RISCVCPU *cpu = env_archcpu(env); RISCVExtStatus fs, vs; uint32_t flags = 0; -- cgit v1.2.3 From 8043effd9b0368c626192cde36c8b83389a617f6 Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Mon, 9 Oct 2023 08:28:17 -0300 Subject: target/riscv: deprecate capital 'Z' CPU properties At this moment there are eleven CPU extension properties that starts with capital 'Z': Zifencei, Zicsr, Zihintntl, Zihintpause, Zawrs, Zfa, Zfh, Zfhmin, Zve32f, Zve64f and Zve64d. All other extensions are named with lower-case letters. We want all properties to be named with lower-case letters since it's consistent with the riscv-isa string that we create in the FDT. Having these 11 properties to be exceptions can be confusing. Deprecate all of them. Create their lower-case counterpart to be used as maintained CPU properties. When trying to use any deprecated property a warning message will be displayed, recommending users to switch to the lower-case variant: ./build/qemu-system-riscv64 -M virt -cpu rv64,Zifencei=true --nographic qemu-system-riscv64: warning: CPU property 'Zifencei' is deprecated. Please use 'zifencei' instead This will give users some time to change their scripts before we remove the capital 'Z' properties entirely. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis Reviewed-by: Andrew Jones Message-ID: <20231009112817.8896-2-dbarboza@ventanamicro.com> Signed-off-by: Alistair Francis --- docs/about/deprecated.rst | 23 +++++++++++++++++++++++ target/riscv/cpu.c | 39 ++++++++++++++++++++++++++++----------- target/riscv/cpu.h | 1 + target/riscv/tcg/tcg-cpu.c | 31 ++++++++++++++++++++++++++++++- 4 files changed, 82 insertions(+), 12 deletions(-) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 5e3965a674..1c4d7f36f0 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -340,6 +340,29 @@ of generic CPUs: rv32 and rv64 as default CPUs and 'max' as a feature complete CPU for both 32 and 64 bit builds. Users are then discouraged to use the 'any' CPU type starting in 8.2. +RISC-V CPU properties which start with capital 'Z' (since 8.2) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +All RISC-V CPU properties which start with capital 'Z' are being deprecated +starting in 8.2. The reason is that they were wrongly added with capital 'Z' +in the past. CPU properties were later added with lower-case names, which +is the format we want to use from now on. + +Users which try to use these deprecated properties will receive a warning +recommending to switch to their stable counterparts: + +- "Zifencei" should be replaced with "zifencei" +- "Zicsr" should be replaced with "zicsr" +- "Zihintntl" should be replaced with "zihintntl" +- "Zihintpause" should be replaced with "zihintpause" +- "Zawrs" should be replaced with "zawrs" +- "Zfa" should be replaced with "zfa" +- "Zfh" should be replaced with "zfh" +- "Zfhmin" should be replaced with "zfhmin" +- "Zve32f" should be replaced with "zve32f" +- "Zve64f" should be replaced with "zve64f" +- "Zve64d" should be replaced with "zve64d" + Block device options '''''''''''''''''''' diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index cdeb24cb5e..ac4a6c7eec 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1242,17 +1242,17 @@ const char *riscv_get_misa_ext_description(uint32_t bit) const RISCVCPUMultiExtConfig riscv_cpu_extensions[] = { /* Defaults for standard extensions */ MULTI_EXT_CFG_BOOL("sscofpmf", ext_sscofpmf, false), - MULTI_EXT_CFG_BOOL("Zifencei", ext_ifencei, true), - MULTI_EXT_CFG_BOOL("Zicsr", ext_icsr, true), - MULTI_EXT_CFG_BOOL("Zihintntl", ext_zihintntl, true), - MULTI_EXT_CFG_BOOL("Zihintpause", ext_zihintpause, true), - MULTI_EXT_CFG_BOOL("Zawrs", ext_zawrs, true), - MULTI_EXT_CFG_BOOL("Zfa", ext_zfa, true), - MULTI_EXT_CFG_BOOL("Zfh", ext_zfh, false), - MULTI_EXT_CFG_BOOL("Zfhmin", ext_zfhmin, false), - MULTI_EXT_CFG_BOOL("Zve32f", ext_zve32f, false), - MULTI_EXT_CFG_BOOL("Zve64f", ext_zve64f, false), - MULTI_EXT_CFG_BOOL("Zve64d", ext_zve64d, false), + MULTI_EXT_CFG_BOOL("zifencei", ext_ifencei, true), + MULTI_EXT_CFG_BOOL("zicsr", ext_icsr, true), + MULTI_EXT_CFG_BOOL("zihintntl", ext_zihintntl, true), + MULTI_EXT_CFG_BOOL("zihintpause", ext_zihintpause, true), + MULTI_EXT_CFG_BOOL("zawrs", ext_zawrs, true), + MULTI_EXT_CFG_BOOL("zfa", ext_zfa, true), + MULTI_EXT_CFG_BOOL("zfh", ext_zfh, false), + MULTI_EXT_CFG_BOOL("zfhmin", ext_zfhmin, false), + MULTI_EXT_CFG_BOOL("zve32f", ext_zve32f, false), + MULTI_EXT_CFG_BOOL("zve64f", ext_zve64f, false), + MULTI_EXT_CFG_BOOL("zve64d", ext_zve64d, false), MULTI_EXT_CFG_BOOL("sstc", ext_sstc, true), MULTI_EXT_CFG_BOOL("smstateen", ext_smstateen, false), @@ -1345,6 +1345,23 @@ const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[] = { DEFINE_PROP_END_OF_LIST(), }; +/* Deprecated entries marked for future removal */ +const RISCVCPUMultiExtConfig riscv_cpu_deprecated_exts[] = { + MULTI_EXT_CFG_BOOL("Zifencei", ext_ifencei, true), + MULTI_EXT_CFG_BOOL("Zicsr", ext_icsr, true), + MULTI_EXT_CFG_BOOL("Zihintntl", ext_zihintntl, true), + MULTI_EXT_CFG_BOOL("Zihintpause", ext_zihintpause, true), + MULTI_EXT_CFG_BOOL("Zawrs", ext_zawrs, true), + MULTI_EXT_CFG_BOOL("Zfa", ext_zfa, true), + MULTI_EXT_CFG_BOOL("Zfh", ext_zfh, false), + MULTI_EXT_CFG_BOOL("Zfhmin", ext_zfhmin, false), + MULTI_EXT_CFG_BOOL("Zve32f", ext_zve32f, false), + MULTI_EXT_CFG_BOOL("Zve64f", ext_zve64f, false), + MULTI_EXT_CFG_BOOL("Zve64d", ext_zve64d, false), + + DEFINE_PROP_END_OF_LIST(), +}; + Property riscv_cpu_options[] = { DEFINE_PROP_UINT8("pmu-num", RISCVCPU, cfg.pmu_num, 16), diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index 8298f8bf63..f8ffa5ee38 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -722,6 +722,7 @@ typedef struct RISCVCPUMultiExtConfig { extern const RISCVCPUMultiExtConfig riscv_cpu_extensions[]; extern const RISCVCPUMultiExtConfig riscv_cpu_vendor_exts[]; extern const RISCVCPUMultiExtConfig riscv_cpu_experimental_exts[]; +extern const RISCVCPUMultiExtConfig riscv_cpu_deprecated_exts[]; extern Property riscv_cpu_options[]; typedef struct isa_ext_data { diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index a042bb6cda..a28918ab30 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -731,6 +731,25 @@ static void riscv_cpu_add_misa_properties(Object *cpu_obj) } } +static bool cpu_ext_is_deprecated(const char *ext_name) +{ + return isupper(ext_name[0]); +} + +/* + * String will be allocated in the heap. Caller is responsible + * for freeing it. + */ +static char *cpu_ext_to_lower(const char *ext_name) +{ + char *ret = g_malloc0(strlen(ext_name) + 1); + + strcpy(ret, ext_name); + ret[0] = tolower(ret[0]); + + return ret; +} + static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { @@ -743,6 +762,13 @@ static void cpu_set_multi_ext_cfg(Object *obj, Visitor *v, const char *name, return; } + if (cpu_ext_is_deprecated(multi_ext_cfg->name)) { + g_autofree char *lower = cpu_ext_to_lower(multi_ext_cfg->name); + + warn_report("CPU property '%s' is deprecated. Please use '%s' instead", + multi_ext_cfg->name, lower); + } + g_hash_table_insert(multi_ext_user_opts, GUINT_TO_POINTER(multi_ext_cfg->offset), (gpointer)value); @@ -776,13 +802,14 @@ static void cpu_add_multi_ext_prop(Object *cpu_obj, const RISCVCPUMultiExtConfig *multi_cfg) { bool generic_cpu = riscv_cpu_is_generic(cpu_obj); + bool deprecated_ext = cpu_ext_is_deprecated(multi_cfg->name); object_property_add(cpu_obj, multi_cfg->name, "bool", cpu_get_multi_ext_cfg, cpu_set_multi_ext_cfg, NULL, (void *)multi_cfg); - if (!generic_cpu) { + if (!generic_cpu || deprecated_ext) { return; } @@ -825,6 +852,8 @@ static void riscv_cpu_add_user_properties(Object *obj) riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_vendor_exts); riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_experimental_exts); + riscv_cpu_add_multiext_prop_array(obj, riscv_cpu_deprecated_exts); + for (Property *prop = riscv_cpu_options; prop && prop->name; prop++) { qdev_property_add_static(DEVICE(obj), prop); } -- cgit v1.2.3 From 837570cef237b634eb4c245363470deebea7089d Mon Sep 17 00:00:00 2001 From: Max Chou Date: Thu, 5 Oct 2023 17:57:32 +0800 Subject: target/riscv: Fix vfwmaccbf16.vf MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The operator (fwmacc16) of vfwmaccbf16.vf helper function should be replaced by fwmaccbf16. Fixes: adf772b0f7 ("target/riscv: Add support for Zvfbfwma extension") Signed-off-by: Max Chou Reviewed-by: LIU Zhiwei Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20231005095734.567575-1-max.chou@sifive.com> Signed-off-by: Alistair Francis --- target/riscv/vector_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/riscv/vector_helper.c b/target/riscv/vector_helper.c index c9b39fb67f..c1c3a4d1ea 100644 --- a/target/riscv/vector_helper.c +++ b/target/riscv/vector_helper.c @@ -3361,7 +3361,7 @@ static uint32_t fwmaccbf16(uint16_t a, uint16_t b, uint32_t d, float_status *s) RVVCALL(OPFVV3, vfwmaccbf16_vv, WOP_UUU_H, H4, H2, H2, fwmaccbf16) GEN_VEXT_VV_ENV(vfwmaccbf16_vv, 4) -RVVCALL(OPFVF3, vfwmaccbf16_vf, WOP_UUU_H, H4, H2, fwmacc16) +RVVCALL(OPFVF3, vfwmaccbf16_vf, WOP_UUU_H, H4, H2, fwmaccbf16) GEN_VEXT_VF(vfwmaccbf16_vf, 4) static uint32_t fwnmacc16(uint16_t a, uint16_t b, uint32_t d, float_status *s) -- cgit v1.2.3