diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-11-10 15:41:40 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-12-12 14:54:37 +0100 |
| commit | 1a29ac014a68e5da8f96d5d8d142b5956eb00b7c (patch) | |
| tree | c0b88ba4f1771eb89e8252bdc0542f60e1e5da03 /drivers/iommu/amd_iommu_types.h | |
| parent | 62f71abbc64d686064a4caa10a3249c26776995e (diff) | |
iommu/amd: Setup PPR log when supported by IOMMU
Allocate and enable a log buffer for peripheral page faults
when the IOMMU supports this feature.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/amd_iommu_types.h')
| -rw-r--r-- | drivers/iommu/amd_iommu_types.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index 0d984ca925be..4dc230904fe9 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -69,11 +69,14 @@ #define MMIO_EXCL_BASE_OFFSET 0x0020 #define MMIO_EXCL_LIMIT_OFFSET 0x0028 #define MMIO_EXT_FEATURES 0x0030 +#define MMIO_PPR_LOG_OFFSET 0x0038 #define MMIO_CMD_HEAD_OFFSET 0x2000 #define MMIO_CMD_TAIL_OFFSET 0x2008 #define MMIO_EVT_HEAD_OFFSET 0x2010 #define MMIO_EVT_TAIL_OFFSET 0x2018 #define MMIO_STATUS_OFFSET 0x2020 +#define MMIO_PPR_HEAD_OFFSET 0x2030 +#define MMIO_PPR_TAIL_OFFSET 0x2038 /* Extended Feature Bits */ @@ -125,6 +128,7 @@ #define CONTROL_CMDBUF_EN 0x0cULL #define CONTROL_PPFLOG_EN 0x0dULL #define CONTROL_PPFINT_EN 0x0eULL +#define CONTROL_PPR_EN 0x0fULL /* command specific defines */ #define CMD_COMPL_WAIT 0x01 @@ -168,6 +172,13 @@ #define EVT_BUFFER_SIZE 8192 /* 512 entries */ #define EVT_LEN_MASK (0x9ULL << 56) +/* Constants for PPR Log handling */ +#define PPR_LOG_ENTRIES 512 +#define PPR_LOG_SIZE_SHIFT 56 +#define PPR_LOG_SIZE_512 (0x9ULL << PPR_LOG_SIZE_SHIFT) +#define PPR_ENTRY_SIZE 16 +#define PPR_LOG_SIZE (PPR_ENTRY_SIZE * PPR_LOG_ENTRIES) + #define PAGE_MODE_NONE 0x00 #define PAGE_MODE_1_LEVEL 0x01 #define PAGE_MODE_2_LEVEL 0x02 @@ -434,6 +445,9 @@ struct amd_iommu { /* MSI number for event interrupt */ u16 evt_msi_num; + /* Base of the PPR log, if present */ + u8 *ppr_log; + /* true if interrupts for this IOMMU are already enabled */ bool int_enabled; |