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authorMatheus Ferst <matheus.ferst@eldorado.org.br>2022-10-11 17:48:10 -0300
committerDaniel Henrique Barboza <danielhb413@gmail.com>2022-10-28 13:15:22 -0300
commit0ccd9d67b1ee9289dd96f2d133a618f97f7a89ab (patch)
tree2ff510de215da75bae5f7ec3bc3618a05d3a7f19
parented3a24c95a9d8d870bf671d5675b8b4b32a0db75 (diff)
target/ppc: move power-saving interrupt masking out of cpu_has_work_POWER9
Move the interrupt masking logic out of cpu_has_work_POWER9 in a new method, p9_interrupt_powersave, that only returns an interrupt if it can wake the processor from power-saving mode. Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br> Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com> Message-Id: <20221011204829.1641124-11-matheus.ferst@eldorado.org.br> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
-rw-r--r--target/ppc/cpu_init.c126
1 files changed, 50 insertions, 76 deletions
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index 07171c679c..9ecea10b48 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -6351,6 +6351,52 @@ static bool ppc_pvr_match_power9(PowerPCCPUClass *pcc, uint32_t pvr, bool best)
return false;
}
+static int p9_interrupt_powersave(CPUPPCState *env)
+{
+ /* External Exception */
+ if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
+ (env->spr[SPR_LPCR] & LPCR_EEE)) {
+ bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
+ if (!heic || !FIELD_EX64_HV(env->msr) ||
+ FIELD_EX64(env->msr, MSR, PR)) {
+ return PPC_INTERRUPT_EXT;
+ }
+ }
+ /* Decrementer Exception */
+ if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
+ (env->spr[SPR_LPCR] & LPCR_DEE)) {
+ return PPC_INTERRUPT_DECR;
+ }
+ /* Machine Check or Hypervisor Maintenance Exception */
+ if (env->spr[SPR_LPCR] & LPCR_OEE) {
+ if (env->pending_interrupts & PPC_INTERRUPT_MCK) {
+ return PPC_INTERRUPT_MCK;
+ }
+ if (env->pending_interrupts & PPC_INTERRUPT_HMI) {
+ return PPC_INTERRUPT_HMI;
+ }
+ }
+ /* Privileged Doorbell Exception */
+ if ((env->pending_interrupts & PPC_INTERRUPT_DOORBELL) &&
+ (env->spr[SPR_LPCR] & LPCR_PDEE)) {
+ return PPC_INTERRUPT_DOORBELL;
+ }
+ /* Hypervisor Doorbell Exception */
+ if ((env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) &&
+ (env->spr[SPR_LPCR] & LPCR_HDEE)) {
+ return PPC_INTERRUPT_HDOORBELL;
+ }
+ /* Hypervisor virtualization exception */
+ if ((env->pending_interrupts & PPC_INTERRUPT_HVIRT) &&
+ (env->spr[SPR_LPCR] & LPCR_HVEE)) {
+ return PPC_INTERRUPT_HVIRT;
+ }
+ if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
+ return PPC_INTERRUPT_RESET;
+ }
+ return 0;
+}
+
static bool cpu_has_work_POWER9(CPUState *cs)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
@@ -6367,44 +6413,8 @@ static bool cpu_has_work_POWER9(CPUState *cs)
if (!(psscr & PSSCR_EC)) {
return true;
}
- /* External Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
- (env->spr[SPR_LPCR] & LPCR_EEE)) {
- bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
- if (!heic || !FIELD_EX64_HV(env->msr) ||
- FIELD_EX64(env->msr, MSR, PR)) {
- return true;
- }
- }
- /* Decrementer Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
- (env->spr[SPR_LPCR] & LPCR_DEE)) {
- return true;
- }
- /* Machine Check or Hypervisor Maintenance Exception */
- if ((env->pending_interrupts & (PPC_INTERRUPT_MCK | PPC_INTERRUPT_HMI))
- && (env->spr[SPR_LPCR] & LPCR_OEE)) {
- return true;
- }
- /* Privileged Doorbell Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_DOORBELL) &&
- (env->spr[SPR_LPCR] & LPCR_PDEE)) {
- return true;
- }
- /* Hypervisor Doorbell Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) &&
- (env->spr[SPR_LPCR] & LPCR_HDEE)) {
- return true;
- }
- /* Hypervisor virtualization exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_HVIRT) &&
- (env->spr[SPR_LPCR] & LPCR_HVEE)) {
- return true;
- }
- if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
- return true;
- }
- return false;
+
+ return p9_interrupt_powersave(env) != 0;
} else {
return FIELD_EX64(env->msr, MSR, EE) &&
(cs->interrupt_request & CPU_INTERRUPT_HARD);
@@ -6600,44 +6610,8 @@ static bool cpu_has_work_POWER10(CPUState *cs)
if (!(psscr & PSSCR_EC)) {
return true;
}
- /* External Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_EXT) &&
- (env->spr[SPR_LPCR] & LPCR_EEE)) {
- bool heic = !!(env->spr[SPR_LPCR] & LPCR_HEIC);
- if (!heic || !FIELD_EX64_HV(env->msr) ||
- FIELD_EX64(env->msr, MSR, PR)) {
- return true;
- }
- }
- /* Decrementer Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_DECR) &&
- (env->spr[SPR_LPCR] & LPCR_DEE)) {
- return true;
- }
- /* Machine Check or Hypervisor Maintenance Exception */
- if ((env->pending_interrupts & (PPC_INTERRUPT_MCK | PPC_INTERRUPT_HMI))
- && (env->spr[SPR_LPCR] & LPCR_OEE)) {
- return true;
- }
- /* Privileged Doorbell Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_DOORBELL) &&
- (env->spr[SPR_LPCR] & LPCR_PDEE)) {
- return true;
- }
- /* Hypervisor Doorbell Exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_HDOORBELL) &&
- (env->spr[SPR_LPCR] & LPCR_HDEE)) {
- return true;
- }
- /* Hypervisor virtualization exception */
- if ((env->pending_interrupts & PPC_INTERRUPT_HVIRT) &&
- (env->spr[SPR_LPCR] & LPCR_HVEE)) {
- return true;
- }
- if (env->pending_interrupts & PPC_INTERRUPT_RESET) {
- return true;
- }
- return false;
+
+ return p9_interrupt_powersave(env) != 0;
} else {
return FIELD_EX64(env->msr, MSR, EE) &&
(cs->interrupt_request & CPU_INTERRUPT_HARD);