diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/arm_sdei.c | 12 | ||||
| -rw-r--r-- | drivers/firmware/psci/psci.c | 24 | ||||
| -rw-r--r-- | drivers/irqchip/irq-gic-v3.c | 20 |
3 files changed, 42 insertions, 14 deletions
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c index 9cd70d1a5622..a479023fa036 100644 --- a/drivers/firmware/arm_sdei.c +++ b/drivers/firmware/arm_sdei.c @@ -967,29 +967,29 @@ static int sdei_get_conduit(struct platform_device *pdev) if (np) { if (of_property_read_string(np, "method", &method)) { pr_warn("missing \"method\" property\n"); - return CONDUIT_INVALID; + return SMCCC_CONDUIT_NONE; } if (!strcmp("hvc", method)) { sdei_firmware_call = &sdei_smccc_hvc; - return CONDUIT_HVC; + return SMCCC_CONDUIT_HVC; } else if (!strcmp("smc", method)) { sdei_firmware_call = &sdei_smccc_smc; - return CONDUIT_SMC; + return SMCCC_CONDUIT_SMC; } pr_warn("invalid \"method\" property: %s\n", method); } else if (IS_ENABLED(CONFIG_ACPI) && !acpi_disabled) { if (acpi_psci_use_hvc()) { sdei_firmware_call = &sdei_smccc_hvc; - return CONDUIT_HVC; + return SMCCC_CONDUIT_HVC; } else { sdei_firmware_call = &sdei_smccc_smc; - return CONDUIT_SMC; + return SMCCC_CONDUIT_SMC; } } - return CONDUIT_INVALID; + return SMCCC_CONDUIT_NONE; } static int sdei_probe(struct platform_device *pdev) diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c index 84f4ff351c62..b3b6c15e7b36 100644 --- a/drivers/firmware/psci/psci.c +++ b/drivers/firmware/psci/psci.c @@ -53,10 +53,18 @@ bool psci_tos_resident_on(int cpu) } struct psci_operations psci_ops = { - .conduit = PSCI_CONDUIT_NONE, + .conduit = SMCCC_CONDUIT_NONE, .smccc_version = SMCCC_VERSION_1_0, }; +enum arm_smccc_conduit arm_smccc_1_1_get_conduit(void) +{ + if (psci_ops.smccc_version < SMCCC_VERSION_1_1) + return SMCCC_CONDUIT_NONE; + + return psci_ops.conduit; +} + typedef unsigned long (psci_fn)(unsigned long, unsigned long, unsigned long, unsigned long); static psci_fn *invoke_psci_fn; @@ -212,13 +220,13 @@ static unsigned long psci_migrate_info_up_cpu(void) 0, 0, 0); } -static void set_conduit(enum psci_conduit conduit) +static void set_conduit(enum arm_smccc_conduit conduit) { switch (conduit) { - case PSCI_CONDUIT_HVC: + case SMCCC_CONDUIT_HVC: invoke_psci_fn = __invoke_psci_fn_hvc; break; - case PSCI_CONDUIT_SMC: + case SMCCC_CONDUIT_SMC: invoke_psci_fn = __invoke_psci_fn_smc; break; default: @@ -240,9 +248,9 @@ static int get_set_conduit_method(struct device_node *np) } if (!strcmp("hvc", method)) { - set_conduit(PSCI_CONDUIT_HVC); + set_conduit(SMCCC_CONDUIT_HVC); } else if (!strcmp("smc", method)) { - set_conduit(PSCI_CONDUIT_SMC); + set_conduit(SMCCC_CONDUIT_SMC); } else { pr_warn("invalid \"method\" property: %s\n", method); return -EINVAL; @@ -583,9 +591,9 @@ int __init psci_acpi_init(void) pr_info("probing for conduit method from ACPI.\n"); if (acpi_psci_use_hvc()) - set_conduit(PSCI_CONDUIT_HVC); + set_conduit(SMCCC_CONDUIT_HVC); else - set_conduit(PSCI_CONDUIT_SMC); + set_conduit(SMCCC_CONDUIT_SMC); return psci_probe(); } diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 422664ac5f53..0abc5a13adaa 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -87,6 +87,15 @@ static DEFINE_STATIC_KEY_TRUE(supports_deactivate_key); */ static DEFINE_STATIC_KEY_FALSE(supports_pseudo_nmis); +/* + * Global static key controlling whether an update to PMR allowing more + * interrupts requires to be propagated to the redistributor (DSB SY). + * And this needs to be exported for modules to be able to enable + * interrupts... + */ +DEFINE_STATIC_KEY_FALSE(gic_pmr_sync); +EXPORT_SYMBOL(gic_pmr_sync); + /* ppi_nmi_refs[n] == number of cpus having ppi[n + 16] set as NMI */ static refcount_t *ppi_nmi_refs; @@ -1502,6 +1511,17 @@ static void gic_enable_nmi_support(void) for (i = 0; i < gic_data.ppi_nr; i++) refcount_set(&ppi_nmi_refs[i], 0); + /* + * Linux itself doesn't use 1:N distribution, so has no need to + * set PMHE. The only reason to have it set is if EL3 requires it + * (and we can't change it). + */ + if (gic_read_ctlr() & ICC_CTLR_EL1_PMHE_MASK) + static_branch_enable(&gic_pmr_sync); + + pr_info("%s ICC_PMR_EL1 synchronisation\n", + static_branch_unlikely(&gic_pmr_sync) ? "Forcing" : "Relaxing"); + static_branch_enable(&supports_pseudo_nmis); if (static_branch_likely(&supports_deactivate_key)) |