diff options
| author | Oak Zeng <oak.zeng@intel.com> | 2025-04-03 12:53:26 -0400 |
|---|---|---|
| committer | Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> | 2025-04-07 11:16:50 +0530 |
| commit | 953d35c0b8ef98cee444253ac0d4772c24d1cc0c (patch) | |
| tree | 91ae547b3c5ec0d75aa4a25bbb8bf523b286c908 | |
| parent | 1e32ffbc9dc8ddf1c7858288d1987ded1c35a8e1 (diff) | |
drm/xe: Introduced needs_scratch bit in device descriptor
On some platform, scratch page is needed for out of bound prefetch
to work. Introduce a bit in device descriptor to specify whether
this device needs scratch page to work.
v2: introduce a needs_scratch bit in device info (Thomas, Jonathan)
v3: drop NEEDS_SCRATCH macro (Matt)
Signed-off-by: Oak Zeng <oak.zeng@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://lore.kernel.org/r/20250403165328.2438690-2-oak.zeng@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
| -rw-r--r-- | drivers/gpu/drm/xe/xe_device_types.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pci.c | 5 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_device_types.h b/drivers/gpu/drm/xe/xe_device_types.h index a68cc47ce014..a42cb26e7d6d 100644 --- a/drivers/gpu/drm/xe/xe_device_types.h +++ b/drivers/gpu/drm/xe/xe_device_types.h @@ -336,6 +336,8 @@ struct xe_device { u8 has_usm:1; /** @info.is_dgfx: is discrete device */ u8 is_dgfx:1; + /** @info.needs_scratch: needs scratch page for oob prefetch to work */ + u8 needs_scratch:1; /** * @info.probe_display: Probe display hardware. If set to * false, the driver will behave as if there is no display diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index 58347fa91841..780287692e61 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -68,6 +68,7 @@ struct xe_device_desc { u8 has_llc:1; u8 has_pxp:1; u8 has_sriov:1; + u8 needs_scratch:1; u8 skip_guc_pc:1; u8 skip_mtcfg:1; u8 skip_pcode:1; @@ -331,6 +332,7 @@ static const struct xe_device_desc lnl_desc = { .dma_mask_size = 46, .has_display = true, .has_pxp = true, + .needs_scratch = true, }; static const struct xe_device_desc bmg_desc = { @@ -340,6 +342,7 @@ static const struct xe_device_desc bmg_desc = { .has_display = true, .has_fan_control = true, .has_heci_cscfi = 1, + .needs_scratch = true, }; static const struct xe_device_desc ptl_desc = { @@ -348,6 +351,7 @@ static const struct xe_device_desc ptl_desc = { .has_display = true, .has_sriov = true, .require_force_probe = true, + .needs_scratch = true, }; #undef PLATFORM @@ -587,6 +591,7 @@ static int xe_info_init_early(struct xe_device *xe, xe->info.skip_guc_pc = desc->skip_guc_pc; xe->info.skip_mtcfg = desc->skip_mtcfg; xe->info.skip_pcode = desc->skip_pcode; + xe->info.needs_scratch = desc->needs_scratch; xe->info.probe_display = IS_ENABLED(CONFIG_DRM_XE_DISPLAY) && xe_modparam.probe_display && |