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authorAlexey Kardashevskiy <aik@ozlabs.ru>2014-06-04 22:50:59 +1000
committerAlexander Graf <agraf@suse.de>2014-06-16 13:24:45 +0200
commitcdcdda27fc843873875e7e444e0164ba2a5e9942 (patch)
tree7b490295f1b369fbe608407ab00e0c5c166d5b88 /target-ppc
parent70c5340744f044d2195216d0e3c7c0c554dbd7ca (diff)
target-ppc: Add POWER8's TM SPRs
This adds TM (Transactional Memory) SPRs. This adds generic spr_read_prev_upper32()/spr_write_prev_upper32() to handle upper half SPRs such as TEXASRU which is upper half of TEXASR. Since this is not the only register like that and their numbers go consequently, it makes sense to generalize the helpers. This adds a gen_msr_facility_check() helper which purpose is to generate the Facility Unavailable exception if the facility is disabled. It is a copy of gen_fscr_facility_check() but it checks for enabled facility in MSR rather than FSCR/HFSCR. It still sets the interrupt cause in FSCR/HFSCR (whichever is passed to the helper). This adds spr_read_tm/spr_write_tm/spr_read_tm_upper32/spr_write_tm_upper32 which are used for TM SPRs. This adds TM-relates MSR bits definitions. This enables TM in POWER8 CPU class' msr_mask. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'target-ppc')
-rw-r--r--target-ppc/cpu.h10
-rw-r--r--target-ppc/helper.h1
-rw-r--r--target-ppc/misc_helper.c12
-rw-r--r--target-ppc/translate_init.c88
4 files changed, 111 insertions, 0 deletions
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index d19e284061..a85916ef47 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -427,6 +427,9 @@ struct ppc_slb_t {
#define MSR_TAG 62 /* Tag-active mode (POWERx ?) */
#define MSR_ISF 61 /* Sixty-four-bit interrupt mode on 630 */
#define MSR_SHV 60 /* hypervisor state hflags */
+#define MSR_TS0 34 /* Transactional state, 2 bits (Book3s) */
+#define MSR_TS1 33
+#define MSR_TM 32 /* Transactional Memory Available (Book3s) */
#define MSR_CM 31 /* Computation mode for BookE hflags */
#define MSR_ICM 30 /* Interrupt computation mode for BookE */
#define MSR_THV 29 /* hypervisor state for 32 bits PowerPC hflags */
@@ -503,6 +506,9 @@ struct ppc_slb_t {
#define msr_pmm ((env->msr >> MSR_PMM) & 1)
#define msr_ri ((env->msr >> MSR_RI) & 1)
#define msr_le ((env->msr >> MSR_LE) & 1)
+#define msr_ts ((env->msr >> MSR_TS1) & 3)
+#define msr_tm ((env->msr >> MSR_TM) & 1)
+
/* Hypervisor bit is more specific */
#if defined(TARGET_PPC64)
#define MSR_HVB (1ULL << MSR_SHV)
@@ -1271,6 +1277,10 @@ static inline int cpu_mmu_index (CPUPPCState *env)
#define SPR_MPC_EIE (0x050)
#define SPR_MPC_EID (0x051)
#define SPR_MPC_NRI (0x052)
+#define SPR_TFHAR (0x080)
+#define SPR_TFIAR (0x081)
+#define SPR_TEXASR (0x082)
+#define SPR_TEXASRU (0x083)
#define SPR_UCTRL (0x088)
#define SPR_MPC_CMPA (0x090)
#define SPR_MPC_CMPB (0x091)
diff --git a/target-ppc/helper.h b/target-ppc/helper.h
index c1417ea75d..509eae52ff 100644
--- a/target-ppc/helper.h
+++ b/target-ppc/helper.h
@@ -578,6 +578,7 @@ DEF_HELPER_3(store_dcr, void, env, tl, tl)
DEF_HELPER_2(load_dump_spr, void, env, i32)
DEF_HELPER_2(store_dump_spr, void, env, i32)
DEF_HELPER_4(fscr_facility_check, void, env, i32, i32, i32)
+DEF_HELPER_4(msr_facility_check, void, env, i32, i32, i32)
DEF_HELPER_1(load_tbl, tl, env)
DEF_HELPER_1(load_tbu, tl, env)
DEF_HELPER_1(load_atbl, tl, env)
diff --git a/target-ppc/misc_helper.c b/target-ppc/misc_helper.c
index 554831faca..a577b3afd1 100644
--- a/target-ppc/misc_helper.c
+++ b/target-ppc/misc_helper.c
@@ -61,6 +61,18 @@ void helper_fscr_facility_check(CPUPPCState *env, uint32_t bit,
#endif
}
+void helper_msr_facility_check(CPUPPCState *env, uint32_t bit,
+ uint32_t sprn, uint32_t cause)
+{
+#ifdef TARGET_PPC64
+ if (env->msr & (1ULL << bit)) {
+ /* Facility is enabled, continue */
+ return;
+ }
+ raise_fu_exception(env, bit, sprn, cause);
+#endif
+}
+
#if !defined(CONFIG_USER_ONLY)
void helper_store_sdr1(CPUPPCState *env, target_ulong val)
diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 548b582542..d31ecc6486 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -7297,6 +7297,45 @@ static void gen_fscr_facility_check(void *opaque, int facility_sprn, int bit,
tcg_temp_free_i32(t1);
}
+static void gen_msr_facility_check(void *opaque, int facility_sprn, int bit,
+ int sprn, int cause)
+{
+ TCGv_i32 t1 = tcg_const_i32(bit);
+ TCGv_i32 t2 = tcg_const_i32(sprn);
+ TCGv_i32 t3 = tcg_const_i32(cause);
+
+ gen_update_current_nip(opaque);
+ gen_helper_msr_facility_check(cpu_env, t1, t2, t3);
+
+ tcg_temp_free_i32(t3);
+ tcg_temp_free_i32(t2);
+ tcg_temp_free_i32(t1);
+}
+
+static void spr_read_prev_upper32(void *opaque, int gprn, int sprn)
+{
+ TCGv spr_up = tcg_temp_new();
+ TCGv spr = tcg_temp_new();
+
+ gen_load_spr(spr, sprn - 1);
+ tcg_gen_shri_tl(spr_up, spr, 32);
+ tcg_gen_ext32u_tl(cpu_gpr[gprn], spr_up);
+
+ tcg_temp_free(spr);
+ tcg_temp_free(spr_up);
+}
+
+static void spr_write_prev_upper32(void *opaque, int sprn, int gprn)
+{
+ TCGv spr = tcg_temp_new();
+
+ gen_load_spr(spr, sprn - 1);
+ tcg_gen_deposit_tl(spr, spr, cpu_gpr[gprn], 32, 32);
+ gen_store_spr(sprn - 1, spr);
+
+ tcg_temp_free(spr);
+}
+
static int check_pow_970 (CPUPPCState *env)
{
if (env->spr[SPR_HID0] & (HID0_DEEPNAP | HID0_DOZE | HID0_NAP)) {
@@ -7634,6 +7673,50 @@ static void gen_spr_power8_tce_address_control(CPUPPCState *env)
0x00000000);
}
+static void spr_read_tm(void *opaque, int gprn, int sprn)
+{
+ gen_msr_facility_check(opaque, SPR_FSCR, MSR_TM, sprn, FSCR_IC_TM);
+ spr_read_generic(opaque, gprn, sprn);
+}
+
+static void spr_write_tm(void *opaque, int sprn, int gprn)
+{
+ gen_msr_facility_check(opaque, SPR_FSCR, MSR_TM, sprn, FSCR_IC_TM);
+ spr_write_generic(opaque, sprn, gprn);
+}
+
+static void spr_read_tm_upper32(void *opaque, int gprn, int sprn)
+{
+ gen_msr_facility_check(opaque, SPR_FSCR, MSR_TM, sprn, FSCR_IC_TM);
+ spr_read_prev_upper32(opaque, gprn, sprn);
+}
+
+static void spr_write_tm_upper32(void *opaque, int sprn, int gprn)
+{
+ gen_msr_facility_check(opaque, SPR_FSCR, MSR_TM, sprn, FSCR_IC_TM);
+ spr_write_prev_upper32(opaque, sprn, gprn);
+}
+
+static void gen_spr_power8_tm(CPUPPCState *env)
+{
+ spr_register_kvm(env, SPR_TFHAR, "TFHAR",
+ &spr_read_tm, &spr_write_tm,
+ &spr_read_tm, &spr_write_tm,
+ KVM_REG_PPC_TFHAR, 0x00000000);
+ spr_register_kvm(env, SPR_TFIAR, "TFIAR",
+ &spr_read_tm, &spr_write_tm,
+ &spr_read_tm, &spr_write_tm,
+ KVM_REG_PPC_TFIAR, 0x00000000);
+ spr_register_kvm(env, SPR_TEXASR, "TEXASR",
+ &spr_read_tm, &spr_write_tm,
+ &spr_read_tm, &spr_write_tm,
+ KVM_REG_PPC_TEXASR, 0x00000000);
+ spr_register(env, SPR_TEXASRU, "TEXASRU",
+ &spr_read_tm_upper32, &spr_write_tm_upper32,
+ &spr_read_tm_upper32, &spr_write_tm_upper32,
+ 0x00000000);
+}
+
static void gen_spr_power8_fscr(CPUPPCState *env)
{
#if defined(CONFIG_USER_ONLY)
@@ -7695,6 +7778,7 @@ static void init_proc_book3s_64(CPUPPCState *env, int version)
gen_spr_power8_fscr(env);
gen_spr_power8_pmu_sup(env);
gen_spr_power8_pmu_user(env);
+ gen_spr_power8_tm(env);
}
#if !defined(CONFIG_USER_ONLY)
switch (version) {
@@ -8066,6 +8150,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
PPC2_LSQ_ISA207 | PPC2_ALTIVEC_207 |
PPC2_ISA205 | PPC2_ISA207S;
pcc->msr_mask = (1ull << MSR_SF) |
+ (1ull << MSR_TM) |
(1ull << MSR_VR) |
(1ull << MSR_VSX) |
(1ull << MSR_EE) |
@@ -9378,6 +9463,9 @@ static void ppc_cpu_reset(CPUState *s)
msr |= (target_ulong)1 << MSR_VSX; /* Allow VSX usage */
msr |= (target_ulong)1 << MSR_SPE; /* Allow SPE usage */
msr |= (target_ulong)1 << MSR_PR;
+#if defined(TARGET_PPC64)
+ msr |= (target_ulong)1 << MSR_TM; /* Transactional memory */
+#endif
#if !defined(TARGET_WORDS_BIGENDIAN)
msr |= (target_ulong)1 << MSR_LE; /* Little-endian user mode */
#endif