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2022-10-14hw/intc: sifive_plic: change interrupt priority register to WARL fieldJim Shu
PLIC spec [1] requires interrupt source priority registers are WARL field and the number of supported priority is power-of-2 to simplify SW discovery. Existing QEMU RISC-V machine (e.g. shakti_c) don't strictly follow PLIC spec, whose number of supported priority is not power-of-2. Just change each bit of interrupt priority register to WARL field when the number of supported priority is power-of-2. [1] https://github.com/riscv/riscv-plic-spec/blob/master/riscv-plic.adoc#interrupt-priorities Signed-off-by: Jim Shu <jim.shu@sifive.com> Reviewed-by: Clément Chigot <chigot@adacore.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20221003041440.2320-3-jim.shu@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-10-14hw/intc: sifive_plic: fix hard-coded max priority levelJim Shu
The maximum priority level is hard-coded when writing to interrupt priority register. However, when writing to priority threshold register, the maximum priority level is from num_priorities Property which is configured by platform. Also change interrupt priority register to use num_priorities Property in maximum priority level. Signed-off-by: Emmanuel Blot <emmanuel.blot@sifive.com> Signed-off-by: Jim Shu <jim.shu@sifive.com> Reviewed-by: Frank Chang <frank.chang@sifive.com> Acked-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20221003041440.2320-2-jim.shu@sifive.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-07-28hw/intc: sifive_plic: Fix multi-socket plic configuraitonAtish Patra
Since commit 40244040a7ac, multi-socket configuration with plic is broken as the hartid for second socket is calculated incorrectly. The hartid stored in addr_config already includes the offset for the base hartid for that socket. Adding it again would lead to segfault while creating the plic device for the virt machine. qdev_connect_gpio_out was also invoked with incorrect number of gpio lines. Fixes: 40244040a7ac (hw/intc: sifive_plic: Avoid overflowing the addr_config buffer) Signed-off-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20220723090335.671105-1-atishp@rivosinc.com> [ Changes by AF: - Change the qdev_connect_gpio_out() numbering ] Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-06-10hw/intc: sifive_plic: Avoid overflowing the addr_config bufferAlistair Francis
Since commit ad40be27 "target/riscv: Support start kernel directly by KVM" we have been overflowing the addr_config on "M,MS..." configurations, as reported https://gitlab.com/qemu-project/qemu/-/issues/1050. This commit changes the loop in sifive_plic_create() from iterating over the number of harts to just iterating over the addr_config. The addr_config is based on the hart_config, and will contain interrup details for all harts. This way we can't iterate past the end of addr_config. Fixes: ad40be27084536 ("target/riscv: Support start kernel directly by KVM") Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1050 Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220601013631.196854-1-alistair.francis@opensource.wdc.com>
2022-01-21target/riscv: Support start kernel directly by KVMYifei Jiang
Get kernel and fdt start address in virt.c, and pass them to KVM when cpu reset. Add kvm_riscv.h to place riscv specific interface. In addition, PLIC is created without M-mode PLIC contexts when KVM is enabled. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Mingwang Li <limingwang@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Message-id: 20220112081329.1835-7-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-01-08hw/intc: sifive_plic: Cleanup remaining functionsAlistair Francis
We can remove the original sifive_plic_irqs_pending() function and instead just use the sifive_plic_claim() function (renamed to sifive_plic_claimed()) to determine if any interrupts are pending. This requires move the side effects outside of sifive_plic_claimed(), but as they are only invoked once that isn't a problem. We have also removed all of the old #ifdef debugging logs, so let's cleanup the last remaining debug function while we are here. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-Id: <20220105213937.1113508-5-alistair.francis@opensource.wdc.com>
2022-01-08hw/intc: sifive_plic: Cleanup the read functionAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-Id: <20220105213937.1113508-4-alistair.francis@opensource.wdc.com>
2022-01-08hw/intc: sifive_plic: Cleanup the write functionAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-Id: <20220105213937.1113508-3-alistair.francis@opensource.wdc.com>
2022-01-08hw/intc: sifive_plic: Add a reset functionAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-Id: <20220105213937.1113508-2-alistair.francis@opensource.wdc.com>
2021-10-22hw/intc: sifive_plic: Cleanup the irq_request functionAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-id: 4200da222a65c89ed1ba35f754dcca7fdd9f08d6.1634524691.git.alistair.francis@wdc.com
2021-10-22hw/intc: sifive_plic: Cleanup the realize functionAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-id: b94c098cb221e744683349b1ac794c23102ef471.1634524691.git.alistair.francis@wdc.com
2021-10-22hw/intc: sifive_plic: Move the propertiesAlistair Francis
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Message-id: 3c125e27c49a4969df82bf8b197535ccd1996939.1634524691.git.alistair.francis@wdc.com
2021-09-21hw/intc: sifive_plic: Convert the PLIC to use RISC-V CPU GPIO linesAlistair Francis
Instead of using riscv_cpu_update_mip() let's instead use the new RISC-V CPU GPIO lines to set the external MIP bits. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> Message-id: 0364190bfa935058a845c0fa1ecf650328840ad5.1630301632.git.alistair.francis@wdc.com
2021-05-02Do not include hw/boards.h if it's not really necessaryThomas Huth
Stop including hw/boards.h in files that don't need it. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210416171314.2074665-3-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-02Do not include sysemu/sysemu.h if it's not really necessaryThomas Huth
Stop including sysemu/sysemu.h in files that don't need it. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20210416171314.2074665-2-thuth@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-11-03target/riscv: Add sifive_plic vmstateYifei Jiang
Add sifive_plic vmstate for supporting sifive_plic migration. Current vmstate framework only supports one structure parameter as num field to describe variable length arrays, so introduce num_enables. Signed-off-by: Yifei Jiang <jiangyifei@huawei.com> Signed-off-by: Yipeng Yin <yinyipeng1@huawei.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20201026115530.304-7-jiangyifei@huawei.com Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2020-09-23qemu/atomic.h: rename atomic_ to qatomic_Stefan Hajnoczi
clang's C11 atomic_fetch_*() functions only take a C11 atomic type pointer argument. QEMU uses direct types (int, etc) and this causes a compiler error when a QEMU code calls these functions in a source file that also included <stdatomic.h> via a system header file: $ CC=clang CXX=clang++ ./configure ... && make ../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid) Avoid using atomic_*() names in QEMU's atomic.h since that namespace is used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h and <stdatomic.h> can co-exist. I checked /usr/include on my machine and searched GitHub for existing "qatomic_" users but there seem to be none. This patch was generated using: $ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \ sort -u >/tmp/changed_identifiers $ for identifier in $(</tmp/changed_identifiers); do sed -i "s%\<$identifier\>%q$identifier%g" \ $(git grep -I -l "\<$identifier\>") done I manually fixed line-wrap issues and misaligned rST tables. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200923105646.47864-1-stefanha@redhat.com>
2020-09-09hw/riscv: Move sifive_plic model to hw/intcBin Meng
This is an effort to clean up the hw/riscv directory. Ideally it should only contain the RISC-V SoC / machine codes plus generic codes. Let's move sifive_plic model to hw/intc directory. Signed-off-by: Bin Meng <bin.meng@windriver.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <1599129623-68957-7-git-send-email-bmeng.cn@gmail.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-16 17:18:37 +0000