From: Feng Wu <feng.wu@intel.com> To: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, gleb@kernel.org, pbonzini@redhat.com, dwmw2@infradead.org, joro@8bytes.org, alex.williamson@redhat.com, jiang.liu@linux.intel.com Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, kvm@vger.kernel.org, Feng Wu <feng.wu@intel.com> Subject: [v2 08/25] iommu, x86: Add intel_irq_remapping_capability() for Intel Date: Wed, 3 Dec 2014 15:39:37 +0800 [thread overview] Message-ID: <1417592394-24343-9-git-send-email-feng.wu@intel.com> (raw) In-Reply-To: <1417592394-24343-1-git-send-email-feng.wu@intel.com> Add the Intel side implementation for capability in struct irq_remap_ops. Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Jiang Liu <jiang.liu@linux.intel.com> --- drivers/iommu/intel_irq_remapping.c | 27 +++++++++++++++++++++++++++ drivers/iommu/irq_remapping.c | 2 ++ drivers/iommu/irq_remapping.h | 4 ++++ 3 files changed, 33 insertions(+), 0 deletions(-) diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c index 01786a8..827aeff 100644 --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -651,6 +651,32 @@ error: return -1; } +static bool intel_irq_remapping_capability(enum irq_remap_cap cap) +{ + struct dmar_drhd_unit *drhd; + struct intel_iommu *iommu; + + switch (cap) { + case IRQ_POSTING_CAP: + /* + * If 1) posted-interrupts is disabled by user + * or 2) irq remapping is disabled, posted-interrupts + * is not supported. + */ + if (disable_irq_post || !irq_remapping_enabled) + return 0; + + for_each_iommu(iommu, drhd) + if (!cap_pi_support(iommu->cap)) + return 0; + + return 1; + default: + pr_warn("Unknown irq remapping capability.\n"); + return 0; + } +} + static int ir_parse_one_hpet_scope(struct acpi_dmar_device_scope *scope, struct intel_iommu *iommu, struct acpi_dmar_hardware_unit *drhd) @@ -947,6 +973,7 @@ static struct irq_domain *intel_get_irq_domain(struct irq_alloc_info *info) struct irq_remap_ops intel_irq_remap_ops = { .supported = intel_irq_remapping_supported, + .capability = intel_irq_remapping_capability, .prepare = dmar_table_init, .enable = intel_enable_irq_remapping, .disable = disable_irq_remapping, diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index 3c3da04..e63e969 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -24,6 +24,8 @@ int irq_remap_broken; int disable_sourceid_checking; int no_x2apic_optout; +int disable_irq_post = 1; + static struct irq_remap_ops *remap_ops; static void irq_remapping_disable_io_apic(void) diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h index 2d991b2..cb1f46d 100644 --- a/drivers/iommu/irq_remapping.h +++ b/drivers/iommu/irq_remapping.h @@ -36,6 +36,8 @@ extern int disable_sourceid_checking; extern int no_x2apic_optout; extern int irq_remapping_enabled; +extern int disable_irq_post; + struct irq_remap_ops { /* Check whether Interrupt Remapping is supported */ int (*supported)(void); @@ -76,6 +78,8 @@ extern void ir_ack_apic_edge(struct irq_data *data); #define disable_irq_remap 1 #define irq_remap_broken 0 +#define disable_irq_post 1 + #endif /* CONFIG_IRQ_REMAP */ #endif /* __IRQ_REMAPPING_H */ -- 1.7.1
WARNING: multiple messages have this Message-ID (diff)
From: Feng Wu <feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> To: tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org, mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org, x86-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, gleb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, pbonzini-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org, alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, jiang.liu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: [v2 08/25] iommu, x86: Add intel_irq_remapping_capability() for Intel Date: Wed, 3 Dec 2014 15:39:37 +0800 [thread overview] Message-ID: <1417592394-24343-9-git-send-email-feng.wu@intel.com> (raw) In-Reply-To: <1417592394-24343-1-git-send-email-feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> Add the Intel side implementation for capability in struct irq_remap_ops. Signed-off-by: Feng Wu <feng.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> Reviewed-by: Jiang Liu <jiang.liu-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> --- drivers/iommu/intel_irq_remapping.c | 27 +++++++++++++++++++++++++++ drivers/iommu/irq_remapping.c | 2 ++ drivers/iommu/irq_remapping.h | 4 ++++ 3 files changed, 33 insertions(+), 0 deletions(-) diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c index 01786a8..827aeff 100644 --- a/drivers/iommu/intel_irq_remapping.c +++ b/drivers/iommu/intel_irq_remapping.c @@ -651,6 +651,32 @@ error: return -1; } +static bool intel_irq_remapping_capability(enum irq_remap_cap cap) +{ + struct dmar_drhd_unit *drhd; + struct intel_iommu *iommu; + + switch (cap) { + case IRQ_POSTING_CAP: + /* + * If 1) posted-interrupts is disabled by user + * or 2) irq remapping is disabled, posted-interrupts + * is not supported. + */ + if (disable_irq_post || !irq_remapping_enabled) + return 0; + + for_each_iommu(iommu, drhd) + if (!cap_pi_support(iommu->cap)) + return 0; + + return 1; + default: + pr_warn("Unknown irq remapping capability.\n"); + return 0; + } +} + static int ir_parse_one_hpet_scope(struct acpi_dmar_device_scope *scope, struct intel_iommu *iommu, struct acpi_dmar_hardware_unit *drhd) @@ -947,6 +973,7 @@ static struct irq_domain *intel_get_irq_domain(struct irq_alloc_info *info) struct irq_remap_ops intel_irq_remap_ops = { .supported = intel_irq_remapping_supported, + .capability = intel_irq_remapping_capability, .prepare = dmar_table_init, .enable = intel_enable_irq_remapping, .disable = disable_irq_remapping, diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index 3c3da04..e63e969 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -24,6 +24,8 @@ int irq_remap_broken; int disable_sourceid_checking; int no_x2apic_optout; +int disable_irq_post = 1; + static struct irq_remap_ops *remap_ops; static void irq_remapping_disable_io_apic(void) diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h index 2d991b2..cb1f46d 100644 --- a/drivers/iommu/irq_remapping.h +++ b/drivers/iommu/irq_remapping.h @@ -36,6 +36,8 @@ extern int disable_sourceid_checking; extern int no_x2apic_optout; extern int irq_remapping_enabled; +extern int disable_irq_post; + struct irq_remap_ops { /* Check whether Interrupt Remapping is supported */ int (*supported)(void); @@ -76,6 +78,8 @@ extern void ir_ack_apic_edge(struct irq_data *data); #define disable_irq_remap 1 #define irq_remap_broken 0 +#define disable_irq_post 1 + #endif /* CONFIG_IRQ_REMAP */ #endif /* __IRQ_REMAPPING_H */ -- 1.7.1
next prev parent reply other threads:[~2014-12-03 7:50 UTC|newest] Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top 2014-12-03 7:39 [v2 00/25] Add VT-d Posted-Interrupts support Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 01/25] genirq: Introduce irq_set_vcpu_affinity() to target an interrupt to a VCPU Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 02/25] iommu: Add new member capability to struct irq_remap_ops Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 03/25] iommu, x86: Define new irte structure for VT-d Posted-Interrupts Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 04/25] iommu, x86: Implement irq_set_vcpu_affinity for intel_ir_chip Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 05/25] x86, irq: Implement irq_set_vcpu_affinity for pci_msi_ir_controller Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 06/25] iommu, x86: No need to migrating irq for VT-d Posted-Interrupts Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 07/25] iommu, x86: Add cap_pi_support() to detect VT-d PI capability Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` Feng Wu [this message] 2014-12-03 7:39 ` [v2 08/25] iommu, x86: Add intel_irq_remapping_capability() for Intel Feng Wu 2014-12-03 7:39 ` [v2 09/25] iommu, x86: define irq_remapping_cap() Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 10/25] KVM: change struct pi_desc for VT-d Posted-Interrupts Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 11/25] KVM: Add some helper functions for Posted-Interrupts Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 12/25] KVM: Initialize VT-d Posted-Interrupts Descriptor Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 13/25] KVM: Define a new interface kvm_find_dest_vcpu() for VT-d PI Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 14/25] KVM: Get Posted-Interrupts descriptor address from struct kvm_vcpu Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 15/25] KVM: Make struct kvm_irq_routing_table accessible Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 16/25] KVM: make kvm_set_msi_irq() public Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 17/25] KVM: kvm-vfio: User API for VT-d Posted-Interrupts Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-04 14:04 ` Eric Auger 2014-12-04 14:04 ` Eric Auger 2014-12-08 4:58 ` Wu, Feng 2014-12-08 4:58 ` Wu, Feng 2014-12-08 5:21 ` Alex Williamson 2014-12-08 5:21 ` Alex Williamson 2014-12-09 11:38 ` Wu, Feng 2014-12-09 11:38 ` Wu, Feng 2014-12-11 5:55 ` Wu, Feng 2014-12-11 5:55 ` Wu, Feng 2014-12-11 15:45 ` Alex Williamson 2014-12-11 15:45 ` Alex Williamson 2014-12-03 7:39 ` [v2 18/25] KVM: kvm-vfio: implement the VFIO skeleton " Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-04 15:35 ` Eric Auger 2014-12-04 15:35 ` Eric Auger 2014-12-08 4:58 ` Wu, Feng 2014-12-08 4:58 ` Wu, Feng 2014-12-08 5:12 ` Alex Williamson 2014-12-08 5:12 ` Alex Williamson 2014-12-08 10:15 ` Eric Auger 2014-12-08 10:15 ` Eric Auger 2014-12-09 11:51 ` Wu, Feng 2014-12-09 11:51 ` Wu, Feng 2014-12-03 7:39 ` [v2 19/25] KVM: x86: kvm-vfio: VT-d posted-interrupts setup Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 20/25] x86, irq: Define a global vector for VT-d Posted-Interrupts Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 21/25] KVM: Update Posted-Interrupts descriptor during vCPU scheduling Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 22/25] KVM: Change NDST field after " Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 23/25] KVM: Add the handler for Wake-up Vector Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 24/25] KVM: Suppress posted-interrupt when 'SN' is set Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-03 7:39 ` [v2 25/25] iommu/vt-d: Add a command line parameter for VT-d posted-interrupts Feng Wu 2014-12-03 7:39 ` Feng Wu 2014-12-08 13:36 ` [v2 00/25] Add VT-d Posted-Interrupts support Wu, Feng 2014-12-08 13:36 ` Wu, Feng
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