diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/smp.c')
-rw-r--r-- | arch/powerpc/platforms/powernv/smp.c | 46 |
1 files changed, 20 insertions, 26 deletions
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c index 9664c8461f03..0d354e19ef92 100644 --- a/arch/powerpc/platforms/powernv/smp.c +++ b/arch/powerpc/platforms/powernv/smp.c @@ -80,7 +80,7 @@ static int pnv_smp_kick_cpu(int nr) * If we already started or OPAL is not supported, we just * kick the CPU via the PACA */ - if (paca[nr].cpu_start || !firmware_has_feature(FW_FEATURE_OPAL)) + if (paca_ptrs[nr]->cpu_start || !firmware_has_feature(FW_FEATURE_OPAL)) goto kick; /* @@ -283,23 +283,6 @@ static void pnv_cause_ipi(int cpu) ic_cause_ipi(cpu); } -static void pnv_p9_dd1_cause_ipi(int cpu) -{ - int this_cpu = get_cpu(); - - /* - * POWER9 DD1 has a global addressed msgsnd, but for now we restrict - * IPIs to same core, because it requires additional synchronization - * for inter-core doorbells which we do not implement. - */ - if (cpumask_test_cpu(cpu, cpu_sibling_mask(this_cpu))) - doorbell_global_ipi(cpu); - else - ic_cause_ipi(cpu); - - put_cpu(); -} - static void __init pnv_smp_probe(void) { if (xive_enabled()) @@ -311,14 +294,10 @@ static void __init pnv_smp_probe(void) ic_cause_ipi = smp_ops->cause_ipi; WARN_ON(!ic_cause_ipi); - if (cpu_has_feature(CPU_FTR_ARCH_300)) { - if (cpu_has_feature(CPU_FTR_POWER9_DD1)) - smp_ops->cause_ipi = pnv_p9_dd1_cause_ipi; - else - smp_ops->cause_ipi = doorbell_global_ipi; - } else { + if (cpu_has_feature(CPU_FTR_ARCH_300)) + smp_ops->cause_ipi = doorbell_global_ipi; + else smp_ops->cause_ipi = pnv_cause_ipi; - } } } @@ -334,7 +313,16 @@ static int pnv_cause_nmi_ipi(int cpu) int64_t rc; if (cpu >= 0) { - rc = opal_signal_system_reset(get_hard_smp_processor_id(cpu)); + int h = get_hard_smp_processor_id(cpu); + + if (opal_check_token(OPAL_QUIESCE)) + opal_quiesce(QUIESCE_HOLD, h); + + rc = opal_signal_system_reset(h); + + if (opal_check_token(OPAL_QUIESCE)) + opal_quiesce(QUIESCE_RESUME, h); + if (rc != OPAL_SUCCESS) return 0; return 1; @@ -343,6 +331,8 @@ static int pnv_cause_nmi_ipi(int cpu) bool success = true; int c; + if (opal_check_token(OPAL_QUIESCE)) + opal_quiesce(QUIESCE_HOLD, -1); /* * We do not use broadcasts (yet), because it's not clear @@ -358,6 +348,10 @@ static int pnv_cause_nmi_ipi(int cpu) if (rc != OPAL_SUCCESS) success = false; } + + if (opal_check_token(OPAL_QUIESCE)) + opal_quiesce(QUIESCE_RESUME, -1); + if (success) return 1; |