diff options
| author | Lucas De Marchi <lucas.demarchi@intel.com> | 2022-09-29 22:09:01 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2022-10-03 06:45:35 -0700 |
| commit | c3d5cfe7b978acea8c0613fb3a068d376ad93463 (patch) | |
| tree | 1bf933cfb6dbc97b3e187ece3cb695be50d0ee03 | |
| parent | dbb2ffbfd708b2d0f1b7fe0083c5e3333d0fe35b (diff) | |
drm/i915: Fix __gen125_emit_bb_start() without WA
ce->wa_bb_page is allocated only for graphics version 12. However
__gen125_emit_bb_start() is used for any graphics version >= 12.50. For
the currently supported platforms this is not an issue, but for future
ones there's a mismatch causing the jump to
`wa_offset + DG2_PREDICATE_RESULT_BB` to be invalid since wa_offset is
not correct.
As in other places in the driver, check for graphics version "greater or
equal" to future-proof the support for new platforms.
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220930050903.3479619-2-lucas.demarchi@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_lrc.c | 19 |
2 files changed, 11 insertions, 10 deletions
diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c index 31a2fbd8c4a8..e000eaf8abed 100644 --- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c @@ -405,6 +405,8 @@ static int __gen125_emit_bb_start(struct i915_request *rq, u32 wa_offset = lrc_indirect_bb(ce); u32 *cs; + GEM_BUG_ON(!ce->wa_bb_page); + cs = intel_ring_begin(rq, 12); if (IS_ERR(cs)) return PTR_ERR(cs); diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index e84ef3859934..3515882a91fb 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -825,19 +825,18 @@ static int lrc_ring_cmd_buf_cctl(const struct intel_engine_cs *engine) static u32 lrc_ring_indirect_offset_default(const struct intel_engine_cs *engine) { - switch (GRAPHICS_VER(engine->i915)) { - default: - MISSING_CASE(GRAPHICS_VER(engine->i915)); - fallthrough; - case 12: + if (GRAPHICS_VER(engine->i915) >= 12) return GEN12_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT; - case 11: + else if (GRAPHICS_VER(engine->i915) >= 11) return GEN11_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT; - case 9: + else if (GRAPHICS_VER(engine->i915) >= 9) return GEN9_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT; - case 8: + else if (GRAPHICS_VER(engine->i915) >= 8) return GEN8_CTX_RCS_INDIRECT_CTX_OFFSET_DEFAULT; - } + + GEM_BUG_ON(GRAPHICS_VER(engine->i915) < 8); + + return 0; } static void @@ -1092,7 +1091,7 @@ __lrc_alloc_state(struct intel_context *ce, struct intel_engine_cs *engine) if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) context_size += I915_GTT_PAGE_SIZE; /* for redzone */ - if (GRAPHICS_VER(engine->i915) == 12) { + if (GRAPHICS_VER(engine->i915) >= 12) { ce->wa_bb_page = context_size / PAGE_SIZE; context_size += PAGE_SIZE; } |