From 3e895f4cbd158c31f1295d097a73ea4fe50f88f4 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 17 Feb 2021 18:10:35 +0000 Subject: ARM: ep93xx: Select GENERIC_IRQ_MULTI_HANDLER directly ep93xx currently relies of CONFIG_ARM_VIC to select GENERIC_IRQ_MULTI_HANDLER. Given that this is logically a platform architecture property, add the selection of GENERIC_IRQ_MULTI_HANDLER at the platform level. Further patches will remove the selection from the irqchip side. Reported-by: Marc Rutland Signed-off-by: Marc Zyngier Signed-off-by: Mark Rutland Tested-by: Hector Martin Cc: Catalin Marinas Cc: James Morse Cc: Thomas Gleixner Cc: Will Deacon Signed-off-by: Marc Zyngier --- arch/arm/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 853aab5ab327..5da96f5df48f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -348,6 +348,7 @@ config ARCH_EP93XX select ARM_AMBA imply ARM_PATCH_PHYS_VIRT select ARM_VIC + select GENERIC_IRQ_MULTI_HANDLER select AUTO_ZRELADDR select CLKDEV_LOOKUP select CLKSRC_MMIO -- cgit v1.2.3 From bd781ae53fac31acea9dec594d62a1424952dd4c Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Fri, 2 Apr 2021 18:09:49 +0100 Subject: mips: netlogic: Use irq_domain_simple_ops for XLP PIC Use the generic irq_domain_simple_ops structure instead of a home-grown one. Acked-by: Thomas Bogendoerfer Signed-off-by: Marc Zyngier --- arch/mips/netlogic/common/irq.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'arch') diff --git a/arch/mips/netlogic/common/irq.c b/arch/mips/netlogic/common/irq.c index cf33dd8a487e..c25a2ce5e29f 100644 --- a/arch/mips/netlogic/common/irq.c +++ b/arch/mips/netlogic/common/irq.c @@ -276,10 +276,6 @@ asmlinkage void plat_irq_dispatch(void) } #ifdef CONFIG_CPU_XLP -static const struct irq_domain_ops xlp_pic_irq_domain_ops = { - .xlate = irq_domain_xlate_onetwocell, -}; - static int __init xlp_of_pic_init(struct device_node *node, struct device_node *parent) { @@ -324,7 +320,7 @@ static int __init xlp_of_pic_init(struct device_node *node, xlp_pic_domain = irq_domain_add_legacy(node, n_picirqs, nlm_irq_to_xirq(socid, PIC_IRQ_BASE), PIC_IRQ_BASE, - &xlp_pic_irq_domain_ops, NULL); + &irq_domain_simple_ops, NULL); if (xlp_pic_domain == NULL) { pr_err("PIC %pOFn: Creating legacy domain failed!\n", node); return -EINVAL; -- cgit v1.2.3 From 46135d6f878ab00261d4a2082d620bfb41019aab Mon Sep 17 00:00:00 2001 From: Lorenzo Pieralisi Date: Wed, 17 Mar 2021 10:07:19 +0000 Subject: irqchip/gic-v4.1: Disable vSGI upon (GIC CPUIF < v4.1) detection GIC CPU interfaces versions predating GIC v4.1 were not built to accommodate vINTID within the vSGI range; as reported in the GIC specifications (8.2 "Changes to the CPU interface"), it is CONSTRAINED UNPREDICTABLE to deliver a vSGI to a PE with ID_AA64PFR0_EL1.GIC < b0011. Check the GIC CPUIF version by reading the SYS_ID_AA64_PFR0_EL1. Disable vSGIs if a CPUIF version < 4.1 is detected to prevent using vSGIs on systems where they may misbehave. Signed-off-by: Lorenzo Pieralisi Cc: Marc Zyngier Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20210317100719.3331-2-lorenzo.pieralisi@arm.com --- arch/arm64/kvm/vgic/vgic-mmio-v3.c | 4 ++-- drivers/irqchip/irq-gic-v4.c | 27 +++++++++++++++++++++++++-- include/linux/irqchip/arm-gic-v4.h | 2 ++ 3 files changed, 29 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/arm64/kvm/vgic/vgic-mmio-v3.c b/arch/arm64/kvm/vgic/vgic-mmio-v3.c index 15a6c98ee92f..2f1b156021a6 100644 --- a/arch/arm64/kvm/vgic/vgic-mmio-v3.c +++ b/arch/arm64/kvm/vgic/vgic-mmio-v3.c @@ -86,7 +86,7 @@ static unsigned long vgic_mmio_read_v3_misc(struct kvm_vcpu *vcpu, } break; case GICD_TYPER2: - if (kvm_vgic_global_state.has_gicv4_1) + if (kvm_vgic_global_state.has_gicv4_1 && gic_cpuif_has_vsgi()) value = GICD_TYPER2_nASSGIcap; break; case GICD_IIDR: @@ -119,7 +119,7 @@ static void vgic_mmio_write_v3_misc(struct kvm_vcpu *vcpu, dist->enabled = val & GICD_CTLR_ENABLE_SS_G1; /* Not a GICv4.1? No HW SGIs */ - if (!kvm_vgic_global_state.has_gicv4_1) + if (!kvm_vgic_global_state.has_gicv4_1 || !gic_cpuif_has_vsgi()) val &= ~GICD_CTLR_nASSGIreq; /* Dist stays enabled? nASSGIreq is RO */ diff --git a/drivers/irqchip/irq-gic-v4.c b/drivers/irqchip/irq-gic-v4.c index 5d1dc9915272..4ea71b28f9f5 100644 --- a/drivers/irqchip/irq-gic-v4.c +++ b/drivers/irqchip/irq-gic-v4.c @@ -87,17 +87,40 @@ static struct irq_domain *gic_domain; static const struct irq_domain_ops *vpe_domain_ops; static const struct irq_domain_ops *sgi_domain_ops; +#ifdef CONFIG_ARM64 +#include + +bool gic_cpuif_has_vsgi(void) +{ + unsigned long fld, reg = read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1); + + fld = cpuid_feature_extract_unsigned_field(reg, ID_AA64PFR0_GIC_SHIFT); + + return fld >= 0x3; +} +#else +bool gic_cpuif_has_vsgi(void) +{ + return false; +} +#endif + static bool has_v4_1(void) { return !!sgi_domain_ops; } +static bool has_v4_1_sgi(void) +{ + return has_v4_1() && gic_cpuif_has_vsgi(); +} + static int its_alloc_vcpu_sgis(struct its_vpe *vpe, int idx) { char *name; int sgi_base; - if (!has_v4_1()) + if (!has_v4_1_sgi()) return 0; name = kasprintf(GFP_KERNEL, "GICv4-sgi-%d", task_pid_nr(current)); @@ -182,7 +205,7 @@ static void its_free_sgi_irqs(struct its_vm *vm) { int i; - if (!has_v4_1()) + if (!has_v4_1_sgi()) return; for (i = 0; i < vm->nr_vpes; i++) { diff --git a/include/linux/irqchip/arm-gic-v4.h b/include/linux/irqchip/arm-gic-v4.h index 943c3411ca10..2c63375bbd43 100644 --- a/include/linux/irqchip/arm-gic-v4.h +++ b/include/linux/irqchip/arm-gic-v4.h @@ -145,4 +145,6 @@ int its_init_v4(struct irq_domain *domain, const struct irq_domain_ops *vpe_ops, const struct irq_domain_ops *sgi_ops); +bool gic_cpuif_has_vsgi(void); + #endif -- cgit v1.2.3 From b68761da01114a64b9c521975c3bca6d10eeb950 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Tue, 6 Apr 2021 10:35:50 +0100 Subject: ARM: PXA: Kill use of irq_create_strict_mappings() irq_create_strict_mappings() is a poor way to allow the use of a linear IRQ domain as a legacy one. Let's be upfront about it and use a legacy domain when appropriate. Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20210406093557.1073423-3-maz@kernel.org --- arch/arm/mach-pxa/pxa_cplds_irqs.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-pxa/pxa_cplds_irqs.c b/arch/arm/mach-pxa/pxa_cplds_irqs.c index 45c19ca96f7a..ec0d9b094744 100644 --- a/arch/arm/mach-pxa/pxa_cplds_irqs.c +++ b/arch/arm/mach-pxa/pxa_cplds_irqs.c @@ -147,22 +147,20 @@ static int cplds_probe(struct platform_device *pdev) } irq_set_irq_wake(fpga->irq, 1); - fpga->irqdomain = irq_domain_add_linear(pdev->dev.of_node, - CPLDS_NB_IRQ, - &cplds_irq_domain_ops, fpga); + if (base_irq) + fpga->irqdomain = irq_domain_add_legacy(pdev->dev.of_node, + CPLDS_NB_IRQ, + base_irq, 0, + &cplds_irq_domain_ops, + fpga); + else + fpga->irqdomain = irq_domain_add_linear(pdev->dev.of_node, + CPLDS_NB_IRQ, + &cplds_irq_domain_ops, + fpga); if (!fpga->irqdomain) return -ENODEV; - if (base_irq) { - ret = irq_create_strict_mappings(fpga->irqdomain, base_irq, 0, - CPLDS_NB_IRQ); - if (ret) { - dev_err(&pdev->dev, "couldn't create the irq mapping %d..%d\n", - base_irq, base_irq + CPLDS_NB_IRQ); - return ret; - } - } - return 0; } -- cgit v1.2.3