diff options
| author | Matt Roper <matthew.d.roper@intel.com> | 2023-08-11 19:06:09 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-21 19:40:25 +0300 |
| commit | 53497182ddf7a98fc33049d51ac3692c2f8097da (patch) | |
| tree | fe6f420f2188161536d6f7c1df8e68be748da62f /drivers/gpu/drm/xe/xe_hw_engine.c | |
| parent | c5fa58146ee0e55ef3e8b28c1aed705c97968336 (diff) | |
| download | linux-53497182ddf7a98fc33049d51ac3692c2f8097da.tar.xz | |
drm/xe/xe2: Handle fused-off CCS engines
On Xe2 platforms, availability of the CCS engines is reflected in the
FUSE4 register.
Bspec: 62483
Cc: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_hw_engine.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_hw_engine.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xe/xe_hw_engine.c b/drivers/gpu/drm/xe/xe_hw_engine.c index 24b5226f1433..dd673a684b70 100644 --- a/drivers/gpu/drm/xe/xe_hw_engine.c +++ b/drivers/gpu/drm/xe/xe_hw_engine.c @@ -550,7 +550,7 @@ static void read_copy_fuses(struct xe_gt *gt) } } -static void read_compute_fuses(struct xe_gt *gt) +static void read_compute_fuses_from_dss(struct xe_gt *gt) { struct xe_device *xe = gt_to_xe(gt); @@ -577,6 +577,33 @@ static void read_compute_fuses(struct xe_gt *gt) } } +static void read_compute_fuses_from_reg(struct xe_gt *gt) +{ + struct xe_device *xe = gt_to_xe(gt); + u32 ccs_mask; + + ccs_mask = xe_mmio_read32(gt, XEHP_FUSE4); + ccs_mask = REG_FIELD_GET(CCS_EN_MASK, ccs_mask); + + for (int i = XE_HW_ENGINE_CCS0, j = 0; i <= XE_HW_ENGINE_CCS3; ++i, ++j) { + if (!(gt->info.engine_mask & BIT(i))) + continue; + + if ((ccs_mask & BIT(j)) == 0) { + gt->info.engine_mask &= ~BIT(i); + drm_info(&xe->drm, "ccs%u fused off\n", j); + } + } +} + +static void read_compute_fuses(struct xe_gt *gt) +{ + if (GRAPHICS_VER(gt_to_xe(gt)) >= 20) + read_compute_fuses_from_reg(gt); + else + read_compute_fuses_from_dss(gt); +} + int xe_hw_engines_init_early(struct xe_gt *gt) { int i; |