From: wanghaibin wanghaibin.wang@huawei.com
virt inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I8K89F CVE: NA
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Hisilicon hardware use GICv4.1 to indicate whether vtimer bypass is supported in GICR.
Signed-off-by: wanghaibin wanghaibin.wang@huawei.com Signed-off-by: Zenghui Yu yuzenghui@huawei.com Signed-off-by: Kunkun Jiang jiangkunkun@huawei.com Signed-off-by: Dongxu Sun sundongxu3@huawei.com --- drivers/irqchip/irq-gic-v3-its.c | 4 +++- drivers/irqchip/irq-gic-v3.c | 6 ++++++ include/linux/irqchip/arm-gic-common.h | 3 +++ include/linux/irqchip/arm-gic-v3.h | 1 + 4 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c index 6f8f3f7deace..4da706139f9d 100644 --- a/drivers/irqchip/irq-gic-v3-its.c +++ b/drivers/irqchip/irq-gic-v3-its.c @@ -5776,8 +5776,10 @@ int __init its_init(struct fwnode_handle *handle, struct rdists *rdists, rdists->has_rvpeid = false;
/* vtimer irqbypass depends on rvpeid support */ - if (WARN_ON(!has_v4_1 && has_vtimer_irqbypass)) + if (WARN_ON(!has_v4_1 && has_vtimer_irqbypass)) { has_vtimer_irqbypass = false; + rdists->has_vtimer = false; + }
if (has_v4 & rdists->has_vlpis) { const struct irq_domain_ops *sgi_ops; diff --git a/drivers/irqchip/irq-gic-v3.c b/drivers/irqchip/irq-gic-v3.c index 81ed7546f44e..306537abb417 100644 --- a/drivers/irqchip/irq-gic-v3.c +++ b/drivers/irqchip/irq-gic-v3.c @@ -931,6 +931,9 @@ static int __gic_update_rdist_properties(struct redist_region *region, gic_data.rdists.has_rvpeid = false; }
+ /* HiSilicon implement: if GICv4.1 is supported, vtimer irqbypass is supported */ + gic_data.rdists.has_vtimer = gic_data.rdists.has_rvpeid; + gic_data.ppi_nr = min(GICR_TYPER_NR_PPIS(typer), gic_data.ppi_nr);
return 1; @@ -1829,6 +1832,7 @@ static int __init gic_init_bases(void __iomem *dist_base, gic_data.rdists.has_vlpis = true; gic_data.rdists.has_direct_lpi = true; gic_data.rdists.has_vpend_valid_dirty = true; + gic_data.rdists.has_vtimer = false; gic_compute_nr_gicr();
if (WARN_ON(!gic_data.domain) || WARN_ON(!gic_data.rdists.rdist)) { @@ -2008,6 +2012,7 @@ static void __init gic_of_setup_kvm_info(struct device_node *node)
gic_v3_kvm_info.has_v4 = gic_data.rdists.has_vlpis; gic_v3_kvm_info.has_v4_1 = gic_data.rdists.has_rvpeid; + gic_v3_kvm_info.has_vtimer = gic_data.rdists.has_vtimer; gic_set_kvm_info(&gic_v3_kvm_info); }
@@ -2324,6 +2329,7 @@ static void __init gic_acpi_setup_kvm_info(void)
gic_v3_kvm_info.has_v4 = gic_data.rdists.has_vlpis; gic_v3_kvm_info.has_v4_1 = gic_data.rdists.has_rvpeid; + gic_v3_kvm_info.has_vtimer = gic_data.rdists.has_vtimer; gic_set_kvm_info(&gic_v3_kvm_info); }
diff --git a/include/linux/irqchip/arm-gic-common.h b/include/linux/irqchip/arm-gic-common.h index fa8c0455c352..9b2c86a09a47 100644 --- a/include/linux/irqchip/arm-gic-common.h +++ b/include/linux/irqchip/arm-gic-common.h @@ -34,6 +34,9 @@ struct gic_kvm_info { bool has_v4; /* rvpeid support */ bool has_v4_1; + /* vtimer irqbypass support */ + bool has_vtimer; + };
const struct gic_kvm_info *gic_get_kvm_info(void); diff --git a/include/linux/irqchip/arm-gic-v3.h b/include/linux/irqchip/arm-gic-v3.h index 97daefec55f3..e5c5b05c9c5a 100644 --- a/include/linux/irqchip/arm-gic-v3.h +++ b/include/linux/irqchip/arm-gic-v3.h @@ -698,6 +698,7 @@ struct rdists { bool has_rvpeid; bool has_direct_lpi; bool has_vpend_valid_dirty; + bool has_vtimer; };
struct irq_domain;