When SRIOV VF device IOTLB is invalidated, we need to provide the PF source ID such that IOMMU hardware can gauge the depth of invalidation queue which is shared among VFs. This is needed when device invalidation throttle (DIT) capability is supported.
This patch adds bit definitions for checking and tracking PFSID.
Signed-off-by: Jacob Pan jacob.jun.pan@linux.intel.com Cc: stable@vger.kernel.org Cc: "Ashok Raj" ashok.raj@intel.com Cc: "Lu Baolu" baolu.lu@linux.intel.com --- drivers/iommu/intel-iommu.c | 1 + include/linux/intel-iommu.h | 3 +++ 2 files changed, 4 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 749d8f2..3d77d61 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -422,6 +422,7 @@ struct device_domain_info { struct list_head global; /* link to global list */ u8 bus; /* PCI bus number */ u8 devfn; /* PCI devfn number */ + u16 pfsid; /* SRIOV physical function source ID */ u8 pasid_supported:3; u8 pasid_enabled:1; u8 pri_supported:1; diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index ef169d6..af1c05f 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -114,6 +114,7 @@ * Extended Capability Register */
+#define ecap_dit(e) ((e >> 41) & 0x1) #define ecap_pasid(e) ((e >> 40) & 0x1) #define ecap_pss(e) ((e >> 35) & 0x1f) #define ecap_eafs(e) ((e >> 34) & 0x1) @@ -284,6 +285,7 @@ enum { #define QI_DEV_IOTLB_SID(sid) ((u64)((sid) & 0xffff) << 32) #define QI_DEV_IOTLB_QDEP(qdep) (((qdep) & 0x1f) << 16) #define QI_DEV_IOTLB_ADDR(addr) ((u64)(addr) & VTD_PAGE_MASK) +#define QI_DEV_IOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52)) #define QI_DEV_IOTLB_SIZE 1 #define QI_DEV_IOTLB_MAX_INVS 32
@@ -308,6 +310,7 @@ enum { #define QI_DEV_EIOTLB_PASID(p) (((u64)p) << 32) #define QI_DEV_EIOTLB_SID(sid) ((u64)((sid) & 0xffff) << 16) #define QI_DEV_EIOTLB_QDEP(qd) ((u64)((qd) & 0x1f) << 4) +#define QI_DEV_EIOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52)) #define QI_DEV_EIOTLB_MAX_INVS 32
#define QI_PGRP_IDX(idx) (((u64)(idx)) << 55)
Hi Joerg/David,
Any comments on this? I will rebase to 18-rc1. Thanks,
Jacob
On Thu, 7 Jun 2018 09:56:59 -0700 Jacob Pan jacob.jun.pan@linux.intel.com wrote:
When SRIOV VF device IOTLB is invalidated, we need to provide the PF source ID such that IOMMU hardware can gauge the depth of invalidation queue which is shared among VFs. This is needed when device invalidation throttle (DIT) capability is supported.
This patch adds bit definitions for checking and tracking PFSID.
Signed-off-by: Jacob Pan jacob.jun.pan@linux.intel.com Cc: stable@vger.kernel.org Cc: "Ashok Raj" ashok.raj@intel.com Cc: "Lu Baolu" baolu.lu@linux.intel.com
drivers/iommu/intel-iommu.c | 1 + include/linux/intel-iommu.h | 3 +++ 2 files changed, 4 insertions(+)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 749d8f2..3d77d61 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -422,6 +422,7 @@ struct device_domain_info { struct list_head global; /* link to global list */ u8 bus; /* PCI bus number */ u8 devfn; /* PCI devfn number */
- u16 pfsid; /* SRIOV physical function source
ID */ u8 pasid_supported:3; u8 pasid_enabled:1; u8 pri_supported:1; diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index ef169d6..af1c05f 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -114,6 +114,7 @@
- Extended Capability Register
*/ +#define ecap_dit(e) ((e >> 41) & 0x1) #define ecap_pasid(e) ((e >> 40) & 0x1) #define ecap_pss(e) ((e >> 35) & 0x1f) #define ecap_eafs(e) ((e >> 34) & 0x1) @@ -284,6 +285,7 @@ enum { #define QI_DEV_IOTLB_SID(sid) ((u64)((sid) & 0xffff) << 32) #define QI_DEV_IOTLB_QDEP(qdep) (((qdep) & 0x1f) << 16) #define QI_DEV_IOTLB_ADDR(addr) ((u64)(addr) & VTD_PAGE_MASK) +#define QI_DEV_IOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52)) #define QI_DEV_IOTLB_SIZE 1 #define QI_DEV_IOTLB_MAX_INVS 32 @@ -308,6 +310,7 @@ enum { #define QI_DEV_EIOTLB_PASID(p) (((u64)p) << 32) #define QI_DEV_EIOTLB_SID(sid) ((u64)((sid) & 0xffff) << 16) #define QI_DEV_EIOTLB_QDEP(qd) ((u64)((qd) & 0x1f) << 4) +#define QI_DEV_EIOTLB_PFSID(pfsid) (((u64)(pfsid & 0xf) << 12) | ((u64)(pfsid & 0xfff) << 52)) #define QI_DEV_EIOTLB_MAX_INVS 32 #define QI_PGRP_IDX(idx) (((u64)(idx)) << 55)
[Jacob Pan]
linux-stable-mirror@lists.linaro.org
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Jacob Pan