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| author | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2026-07-13 15:17:59 -0700 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2026-07-16 16:32:51 +0200 |
| commit | ad87e2476b3b246580f407afc8ffa91d621bc849 (patch) | |
| tree | fed897963c8a35f7e667cc9f62504ee37c4e2d1f /drivers | |
| parent | 56441f9e08ad68697295b8835266d2bc48ab59b5 (diff) | |
| download | linux-next-ad87e2476b3b246580f407afc8ffa91d621bc849.tar.gz linux-next-ad87e2476b3b246580f407afc8ffa91d621bc849.zip | |
drm/xe/wopcm: fix WOPCM size for LNL+
Starting on LNL the WOPCM size is 8MB instead of 4, so we need to avoid
using the [0, 8MB) range of the GGTT as that can be unaccessible from
the microcontrollers.
Note that the proper long-term fix here is to read the WOPCM size from
the HW, but that is a more serious rework that would be difficult to
backport, so we can do that as a follow-up.
Fixes: 9c57bc08652a ("drm/xe/lnl: Drop force_probe requirement")
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Shuicheng Lin <shuicheng.lin@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://patch.msgid.link/20260713221758.3285744-2-daniele.ceraolospurio@intel.com
(cherry picked from commit 3033b0b24ed0e2f5e56bdd4d9c183417c365a45b)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_wopcm.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/gpu/drm/xe/xe_wopcm.c b/drivers/gpu/drm/xe/xe_wopcm.c index 900daf1d1b1b..fe65ed246775 100644 --- a/drivers/gpu/drm/xe/xe_wopcm.c +++ b/drivers/gpu/drm/xe/xe_wopcm.c @@ -49,9 +49,9 @@ */ /* Default WOPCM size is 2MB from Gen11, 1MB on previous platforms */ -/* FIXME: Larger size require for 2 tile PVC, do a proper probe sooner or later */ +/* FIXME: Larger size require for some platforms, do a proper probe sooner or later */ #define DGFX_WOPCM_SIZE SZ_4M -/* FIXME: Larger size require for MTL, do a proper probe sooner or later */ +#define LNL_WOPCM_SIZE SZ_8M #define MTL_WOPCM_SIZE SZ_4M #define WOPCM_SIZE SZ_2M @@ -179,9 +179,14 @@ err_out: u32 xe_wopcm_size(struct xe_device *xe) { - return IS_DGFX(xe) ? DGFX_WOPCM_SIZE : - xe->info.platform == XE_METEORLAKE ? MTL_WOPCM_SIZE : - WOPCM_SIZE; + if (xe->info.platform >= XE_LUNARLAKE) + return LNL_WOPCM_SIZE; + else if (IS_DGFX(xe)) + return DGFX_WOPCM_SIZE; + else if (xe->info.platform == XE_METEORLAKE) + return MTL_WOPCM_SIZE; + else + return WOPCM_SIZE; } static u32 max_wopcm_size(struct xe_device *xe) |