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| author | Yian Chen <yian.chen@intel.com> | 2021-02-04 09:44:00 +0800 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-02-04 14:42:00 +0100 |
| commit | 31a75cbbb9274cf8185f402904bf11386917870b (patch) | |
| tree | a51eb407cd5a731a5bcc503db044d8ca09470529 /drivers/iommu/intel/dmar.c | |
| parent | 81d3c75bb3c32ca61712e093b8dce89d73c22150 (diff) | |
| download | linux-31a75cbbb9274cf8185f402904bf11386917870b.tar.bz2 | |
iommu/vt-d: Parse SATC reporting structure
Software should parse every SATC table and all devices in the tables
reported by the BIOS and keep the information in kernel list for further
reference.
Signed-off-by: Yian Chen <yian.chen@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210203093329.1617808-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210204014401.2846425-7-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/intel/dmar.c')
| -rw-r--r-- | drivers/iommu/intel/dmar.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index bd51f33642e0..6b8fce1c85c4 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -526,6 +526,7 @@ dmar_table_print_dmar_entry(struct acpi_dmar_header *header) struct acpi_dmar_reserved_memory *rmrr; struct acpi_dmar_atsr *atsr; struct acpi_dmar_rhsa *rhsa; + struct acpi_dmar_satc *satc; switch (header->type) { case ACPI_DMAR_TYPE_HARDWARE_UNIT: @@ -555,6 +556,10 @@ dmar_table_print_dmar_entry(struct acpi_dmar_header *header) /* We don't print this here because we need to sanity-check it first. So print it in dmar_parse_one_andd() instead. */ break; + case ACPI_DMAR_TYPE_SATC: + satc = container_of(header, struct acpi_dmar_satc, header); + pr_info("SATC flags: 0x%x\n", satc->flags); + break; } } @@ -642,6 +647,7 @@ parse_dmar_table(void) .cb[ACPI_DMAR_TYPE_ROOT_ATS] = &dmar_parse_one_atsr, .cb[ACPI_DMAR_TYPE_HARDWARE_AFFINITY] = &dmar_parse_one_rhsa, .cb[ACPI_DMAR_TYPE_NAMESPACE] = &dmar_parse_one_andd, + .cb[ACPI_DMAR_TYPE_SATC] = &dmar_parse_one_satc, }; /* @@ -2077,6 +2083,7 @@ static guid_t dmar_hp_guid = #define DMAR_DSM_FUNC_DRHD 1 #define DMAR_DSM_FUNC_ATSR 2 #define DMAR_DSM_FUNC_RHSA 3 +#define DMAR_DSM_FUNC_SATC 4 static inline bool dmar_detect_dsm(acpi_handle handle, int func) { @@ -2094,6 +2101,7 @@ static int dmar_walk_dsm_resource(acpi_handle handle, int func, [DMAR_DSM_FUNC_DRHD] = ACPI_DMAR_TYPE_HARDWARE_UNIT, [DMAR_DSM_FUNC_ATSR] = ACPI_DMAR_TYPE_ROOT_ATS, [DMAR_DSM_FUNC_RHSA] = ACPI_DMAR_TYPE_HARDWARE_AFFINITY, + [DMAR_DSM_FUNC_SATC] = ACPI_DMAR_TYPE_SATC, }; if (!dmar_detect_dsm(handle, func)) |