diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2025-01-06 11:55:05 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-01-24 09:53:24 -0500 |
| commit | 757e8b951ce27bae1c1fd96f9d4c6f14037a542b (patch) | |
| tree | 21cfaff0bea6d28c743835307151293aa1fd3c96 /drivers/gpu/drm/amd/include/amd_pcie.h | |
| parent | a8d42cd228ec41ad99c50a270db82f0dd9127a28 (diff) | |
drm/amdgpu: cache gpu pcie link width
Get the PCIe link with of the device itself (or it's
integrated upstream bridge) and cache that.
v2: fix typo
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3820
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/include/amd_pcie.h')
| -rw-r--r-- | drivers/gpu/drm/amd/include/amd_pcie.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/amd_pcie.h b/drivers/gpu/drm/amd/include/amd_pcie.h index a1ece3eecdf5..a08611cb8041 100644 --- a/drivers/gpu/drm/amd/include/amd_pcie.h +++ b/drivers/gpu/drm/amd/include/amd_pcie.h @@ -49,6 +49,17 @@ | CAIL_ASIC_PCIE_LINK_SPEED_SUPPORT_GEN3) /* Following flags shows PCIe lane width switch supported in driver which are decided by chipset and ASIC */ + +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1 0x00000001 +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 0x00000002 +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X4 0x00000004 +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X8 0x00000008 +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X12 0x00000010 +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X16 0x00000020 +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X32 0x00000040 +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_MASK 0x0000FFFF +#define CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_SHIFT 0 + #define CAIL_PCIE_LINK_WIDTH_SUPPORT_X1 0x00010000 #define CAIL_PCIE_LINK_WIDTH_SUPPORT_X2 0x00020000 #define CAIL_PCIE_LINK_WIDTH_SUPPORT_X4 0x00040000 @@ -56,6 +67,7 @@ #define CAIL_PCIE_LINK_WIDTH_SUPPORT_X12 0x00100000 #define CAIL_PCIE_LINK_WIDTH_SUPPORT_X16 0x00200000 #define CAIL_PCIE_LINK_WIDTH_SUPPORT_X32 0x00400000 +#define CAIL_PCIE_LINK_WIDTH_SUPPORT_MASK 0xFFFF0000 #define CAIL_PCIE_LINK_WIDTH_SUPPORT_SHIFT 16 /* 1/2/4/8/16 lanes */ @@ -65,4 +77,10 @@ | CAIL_PCIE_LINK_WIDTH_SUPPORT_X8 \ | CAIL_PCIE_LINK_WIDTH_SUPPORT_X16) +#define AMDGPU_DEFAULT_ASIC_PCIE_MLW_MASK (CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X1 \ + | CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X2 \ + | CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X4 \ + | CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X8 \ + | CAIL_ASIC_PCIE_LINK_WIDTH_SUPPORT_X16) + #endif |