diff options
| author | Lucas De Marchi <lucas.demarchi@intel.com> | 2024-02-27 22:10:48 -0800 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2024-02-29 20:29:42 -0800 |
| commit | 67b7950333925db42efaf0616caf4e77decddda1 (patch) | |
| tree | 2bd241fa4ea0f02853d3ed2a4c54bcd25ec9453a | |
| parent | 50a9ffe61f7da1e8a55a1802cb010902dad423c8 (diff) | |
| download | linux-stable-67b7950333925db42efaf0616caf4e77decddda1.tar.gz linux-stable-67b7950333925db42efaf0616caf4e77decddda1.tar.bz2 linux-stable-67b7950333925db42efaf0616caf4e77decddda1.zip | |
drm/xe/mocs: Fix DG2 kunit
LNCFCMOCS31[31:16] is read-only for DG2 and MTL, so it's not possible to
check set it. While trying to set doesn't cause any issue, later when
it's read back to check if the value got correctly recorded causes the
test to fail. Now that test is reliable for an odd number of entries,
reduce it so the last entry is ignored.
Bspec: 55267
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1253
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1233
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228061048.3661978-6-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
| -rw-r--r-- | drivers/gpu/drm/xe/xe_mocs.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xe/xe_mocs.c b/drivers/gpu/drm/xe/xe_mocs.c index 60ab34fd213f..f56f630fa29d 100644 --- a/drivers/gpu/drm/xe/xe_mocs.c +++ b/drivers/gpu/drm/xe/xe_mocs.c @@ -72,7 +72,7 @@ struct xe_mocs_info { /* Helper defines */ #define XELP_NUM_MOCS_ENTRIES 64 /* 63-64 are reserved, but configured. */ #define PVC_NUM_MOCS_ENTRIES 3 -#define MTL_NUM_MOCS_ENTRIES 16 +#define MTL_NUM_MOCS_ENTRIES 16 #define XE2_NUM_MOCS_ENTRIES 16 /* (e)LLC caching options */ @@ -401,7 +401,11 @@ static unsigned int get_mocs_settings(struct xe_device *xe, info->size = ARRAY_SIZE(dg2_mocs_desc); info->table = dg2_mocs_desc; info->uc_index = 1; - info->n_entries = XELP_NUM_MOCS_ENTRIES; + /* + * Last entry is RO on hardware, don't bother with what was + * written when checking later + */ + info->n_entries = XELP_NUM_MOCS_ENTRIES - 1; info->unused_entries_index = 3; break; case XE_DG1: |