| Message ID | 20231020120912.1888023-4-andrzej.hajda@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Apply Wa_16018031267 / Wa_16018063123 | expand |
-----Original Message----- From: Hajda, Andrzej <andrzej.hajda@intel.com> Sent: Friday, October 20, 2023 5:09 AM To: intel-gfx@lists.freedesktop.org Cc: Nirmoy Das <nirmoy.das@linux.intel.com>; Shyti, Andi <andi.shyti@intel.com>; Cavitt, Jonathan <jonathan.cavitt@intel.com>; Das, Nirmoy <nirmoy.das@intel.com>; Hajda, Andrzej <andrzej.hajda@intel.com> Subject: [PATCH v2 3/4] drm/i915: Add WABB blit for Wa_16018031267 / Wa_16018063123 > > From: Jonathan Cavitt <jonathan.cavitt@intel.com> > > Apply WABB blit for Wa_16018031267 / Wa_16018063123. > Additionally, update the lrc selftest to exercise the new > WABB changes. > > Co-developed-by: Nirmoy Das <nirmoy.das@intel.com> > Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com> > Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com> > --- > drivers/gpu/drm/i915/gt/intel_engine_regs.h | 3 + > drivers/gpu/drm/i915/gt/intel_gt.h | 4 + > drivers/gpu/drm/i915/gt/intel_gt_types.h | 2 + > drivers/gpu/drm/i915/gt/intel_lrc.c | 100 +++++++++++++++++++- > drivers/gpu/drm/i915/gt/selftest_lrc.c | 65 +++++++++---- > 5 files changed, 153 insertions(+), 21 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/intel_engine_regs.h b/drivers/gpu/drm/i915/gt/intel_engine_regs.h > index fdd4ddd3a978a2..b8618ee3e3041a 100644 > --- a/drivers/gpu/drm/i915/gt/intel_engine_regs.h > +++ b/drivers/gpu/drm/i915/gt/intel_engine_regs.h > @@ -118,6 +118,9 @@ > #define CCID_EXTENDED_STATE_RESTORE BIT(2) > #define CCID_EXTENDED_STATE_SAVE BIT(3) > #define RING_BB_PER_CTX_PTR(base) _MMIO((base) + 0x1c0) /* gen8+ */ > +#define PER_CTX_BB_FORCE BIT(2) > +#define PER_CTX_BB_VALID BIT(0) > + > #define RING_INDIRECT_CTX(base) _MMIO((base) + 0x1c4) /* gen8+ */ > #define RING_INDIRECT_CTX_OFFSET(base) _MMIO((base) + 0x1c8) /* gen8+ */ > #define ECOSKPD(base) _MMIO((base) + 0x1d0) > diff --git a/drivers/gpu/drm/i915/gt/intel_gt.h b/drivers/gpu/drm/i915/gt/intel_gt.h > index 970bedf6b78a7b..50989fc2b6debe 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt.h > +++ b/drivers/gpu/drm/i915/gt/intel_gt.h > @@ -82,6 +82,10 @@ struct drm_printer; > ##__VA_ARGS__); \ > } while (0) > > +#define NEEDS_FASTCOLOR_BLT_WABB(engine) ( \ > + IS_GFX_GT_IP_RANGE(engine->gt, IP_VER(12, 55), IP_VER(12, 71)) && \ > + engine->class == COPY_ENGINE_CLASS) > + > static inline bool gt_is_root(struct intel_gt *gt) > { > return !gt->info.id; > diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h b/drivers/gpu/drm/i915/gt/intel_gt_types.h > index def7dd0eb6f196..4917633f299dd5 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt_types.h > +++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h > @@ -307,6 +307,8 @@ enum intel_gt_scratch_field { > > /* 8 bytes */ > INTEL_GT_SCRATCH_FIELD_COHERENTL3_WA = 256, > + > + INTEL_GT_SCRATCH_FIELD_DUMMY_BLIT = 384, This was an artifact from an older version of the patch when I was originally revising it. I think it can safely be removed: It's not used anywhere in the patch series and is missing a comment denoting the field size anyways. Otherwise: Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> -Jonathan Cavitt > }; > > #define intel_gt_support_legacy_fencing(gt) ((gt)->ggtt->num_fences > 0) > diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c > index eaf66d90316655..96ef901113eae9 100644 > --- a/drivers/gpu/drm/i915/gt/intel_lrc.c > +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c > @@ -828,6 +828,18 @@ lrc_ring_indirect_offset_default(const struct intel_engine_cs *engine) > return 0; > } > > +static void > +lrc_setup_bb_per_ctx(u32 *regs, > + const struct intel_engine_cs *engine, > + u32 ctx_bb_ggtt_addr) > +{ > + GEM_BUG_ON(lrc_ring_wa_bb_per_ctx(engine) == -1); > + regs[lrc_ring_wa_bb_per_ctx(engine) + 1] = > + ctx_bb_ggtt_addr | > + PER_CTX_BB_FORCE | > + PER_CTX_BB_VALID; > +} > + > static void > lrc_setup_indirect_ctx(u32 *regs, > const struct intel_engine_cs *engine, > @@ -1020,7 +1032,13 @@ static u32 context_wa_bb_offset(const struct intel_context *ce) > return PAGE_SIZE * ce->wa_bb_page; > } > > -static u32 *context_indirect_bb(const struct intel_context *ce) > +/* > + * per_ctx below determines which WABB section is used. > + * When true, the function returns the location of the > + * PER_CTX_BB. When false, the function returns the > + * location of the INDIRECT_CTX. > + */ > +static u32 *context_wabb(const struct intel_context *ce, bool per_ctx) > { > void *ptr; > > @@ -1029,6 +1047,7 @@ static u32 *context_indirect_bb(const struct intel_context *ce) > ptr = ce->lrc_reg_state; > ptr -= LRC_STATE_OFFSET; /* back to start of context image */ > ptr += context_wa_bb_offset(ce); > + ptr += per_ctx ? PAGE_SIZE : 0; > > return ptr; > } > @@ -1105,7 +1124,8 @@ __lrc_alloc_state(struct intel_context *ce, struct intel_engine_cs *engine) > > if (GRAPHICS_VER(engine->i915) >= 12) { > ce->wa_bb_page = context_size / PAGE_SIZE; > - context_size += PAGE_SIZE; > + /* INDIRECT_CTX and PER_CTX_BB need separate pages. */ > + context_size += PAGE_SIZE * 2; > } > > if (intel_context_is_parent(ce) && intel_engine_uses_guc(engine)) { > @@ -1407,12 +1427,85 @@ gen12_emit_indirect_ctx_xcs(const struct intel_context *ce, u32 *cs) > return gen12_emit_aux_table_inv(ce->engine, cs); > } > > +static u32 *xehp_emit_fastcolor_blt_wabb(const struct intel_context *ce, u32 *cs) > +{ > + struct intel_gt *gt = ce->engine->gt; > + int mocs = gt->mocs.uc_index << 1; > + > + /** > + * Wa_16018031267 / Wa_16018063123 requires that SW forces the > + * main copy engine arbitration into round robin mode. We > + * additionally need to submit the following WABB blt command > + * to produce 4 subblits with each subblit generating 0 byte > + * write requests as WABB: > + * > + * XY_FASTCOLOR_BLT > + * BG0 -> 5100000E > + * BG1 -> 0000003F (Dest pitch) > + * BG2 -> 00000000 (X1, Y1) = (0, 0) > + * BG3 -> 00040001 (X2, Y2) = (1, 4) > + * BG4 -> scratch > + * BG5 -> scratch > + * BG6-12 -> 00000000 > + * BG13 -> 20004004 (Surf. Width= 2,Surf. Height = 5 ) > + * BG14 -> 00000010 (Qpitch = 4) > + * BG15 -> 00000000 > + */ > + *cs++ = XY_FAST_COLOR_BLT_CMD | (16 - 2); > + *cs++ = FIELD_PREP(XY_FAST_COLOR_BLT_MOCS_MASK, mocs) | 0x3f; > + *cs++ = 0; > + *cs++ = 4 << 16 | 1; > + *cs++ = lower_32_bits(i915_vma_offset(ce->vm->rsvd)); > + *cs++ = upper_32_bits(i915_vma_offset(ce->vm->rsvd)); > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0x20004004; > + *cs++ = 0x10; > + *cs++ = 0; > + > + return cs; > +} > + > +static u32 * > +xehp_emit_per_ctx_bb(const struct intel_context *ce, u32 *cs) > +{ > + /* Wa_16018031267, Wa_16018063123 */ > + if (NEEDS_FASTCOLOR_BLT_WABB(ce->engine)) > + cs = xehp_emit_fastcolor_blt_wabb(ce, cs); > + > + return cs; > +} > + > +static void > +setup_per_ctx_bb(const struct intel_context *ce, > + const struct intel_engine_cs *engine, > + u32 *(*emit)(const struct intel_context *, u32 *)) > +{ > + /* Place PER_CTX_BB on next page after INDIRECT_CTX */ > + u32 * const start = context_wabb(ce, true); > + u32 *cs; > + > + cs = emit(ce, start); > + > + /* PER_CTX_BB must manually terminate */ > + *cs++ = MI_BATCH_BUFFER_END; > + > + GEM_BUG_ON(cs - start > I915_GTT_PAGE_SIZE / sizeof(*cs)); > + lrc_setup_bb_per_ctx(ce->lrc_reg_state, engine, > + lrc_indirect_bb(ce) + PAGE_SIZE); > +} > + > static void > setup_indirect_ctx_bb(const struct intel_context *ce, > const struct intel_engine_cs *engine, > u32 *(*emit)(const struct intel_context *, u32 *)) > { > - u32 * const start = context_indirect_bb(ce); > + u32 * const start = context_wabb(ce, false); > u32 *cs; > > cs = emit(ce, start); > @@ -1511,6 +1604,7 @@ u32 lrc_update_regs(const struct intel_context *ce, > /* Mutually exclusive wrt to global indirect bb */ > GEM_BUG_ON(engine->wa_ctx.indirect_ctx.size); > setup_indirect_ctx_bb(ce, engine, fn); > + setup_per_ctx_bb(ce, engine, xehp_emit_per_ctx_bb); > } > > return lrc_descriptor(ce) | CTX_DESC_FORCE_RESTORE; > diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c > index 5f826b6dcf5d6f..e17b8777d21dc9 100644 > --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c > +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c > @@ -1555,7 +1555,7 @@ static int live_lrc_isolation(void *arg) > return err; > } > > -static int indirect_ctx_submit_req(struct intel_context *ce) > +static int wabb_ctx_submit_req(struct intel_context *ce) > { > struct i915_request *rq; > int err = 0; > @@ -1579,7 +1579,8 @@ static int indirect_ctx_submit_req(struct intel_context *ce) > #define CTX_BB_CANARY_INDEX (CTX_BB_CANARY_OFFSET / sizeof(u32)) > > static u32 * > -emit_indirect_ctx_bb_canary(const struct intel_context *ce, u32 *cs) > +emit_wabb_ctx_canary(const struct intel_context *ce, > + u32 *cs, bool per_ctx) > { > *cs++ = MI_STORE_REGISTER_MEM_GEN8 | > MI_SRM_LRM_GLOBAL_GTT | > @@ -1587,26 +1588,43 @@ emit_indirect_ctx_bb_canary(const struct intel_context *ce, u32 *cs) > *cs++ = i915_mmio_reg_offset(RING_START(0)); > *cs++ = i915_ggtt_offset(ce->state) + > context_wa_bb_offset(ce) + > - CTX_BB_CANARY_OFFSET; > + CTX_BB_CANARY_OFFSET + > + (per_ctx ? PAGE_SIZE : 0); > *cs++ = 0; > > return cs; > } > > +static u32 * > +emit_indirect_ctx_bb_canary(const struct intel_context *ce, u32 *cs) > +{ > + return emit_wabb_ctx_canary(ce, cs, false); > +} > + > +static u32 * > +emit_per_ctx_bb_canary(const struct intel_context *ce, u32 *cs) > +{ > + return emit_wabb_ctx_canary(ce, cs, true); > +} > + > static void > -indirect_ctx_bb_setup(struct intel_context *ce) > +wabb_ctx_setup(struct intel_context *ce, bool per_ctx) > { > - u32 *cs = context_indirect_bb(ce); > + u32 *cs = context_wabb(ce, per_ctx); > > cs[CTX_BB_CANARY_INDEX] = 0xdeadf00d; > > - setup_indirect_ctx_bb(ce, ce->engine, emit_indirect_ctx_bb_canary); > + if (per_ctx) > + setup_per_ctx_bb(ce, ce->engine, emit_per_ctx_bb_canary); > + else > + setup_indirect_ctx_bb(ce, ce->engine, emit_indirect_ctx_bb_canary); > } > > -static bool check_ring_start(struct intel_context *ce) > +static bool check_ring_start(struct intel_context *ce, bool per_ctx) > { > const u32 * const ctx_bb = (void *)(ce->lrc_reg_state) - > - LRC_STATE_OFFSET + context_wa_bb_offset(ce); > + LRC_STATE_OFFSET + context_wa_bb_offset(ce) + > + (per_ctx ? PAGE_SIZE : 0); > > if (ctx_bb[CTX_BB_CANARY_INDEX] == ce->lrc_reg_state[CTX_RING_START]) > return true; > @@ -1618,21 +1636,21 @@ static bool check_ring_start(struct intel_context *ce) > return false; > } > > -static int indirect_ctx_bb_check(struct intel_context *ce) > +static int wabb_ctx_check(struct intel_context *ce, bool per_ctx) > { > int err; > > - err = indirect_ctx_submit_req(ce); > + err = wabb_ctx_submit_req(ce); > if (err) > return err; > > - if (!check_ring_start(ce)) > + if (!check_ring_start(ce, per_ctx)) > return -EINVAL; > > return 0; > } > > -static int __live_lrc_indirect_ctx_bb(struct intel_engine_cs *engine) > +static int __lrc_wabb_ctx(struct intel_engine_cs *engine, bool per_ctx) > { > struct intel_context *a, *b; > int err; > @@ -1667,14 +1685,14 @@ static int __live_lrc_indirect_ctx_bb(struct intel_engine_cs *engine) > * As ring start is restored apriori of starting the indirect ctx bb and > * as it will be different for each context, it fits to this purpose. > */ > - indirect_ctx_bb_setup(a); > - indirect_ctx_bb_setup(b); > + wabb_ctx_setup(a, per_ctx); > + wabb_ctx_setup(b, per_ctx); > > - err = indirect_ctx_bb_check(a); > + err = wabb_ctx_check(a, per_ctx); > if (err) > goto unpin_b; > > - err = indirect_ctx_bb_check(b); > + err = wabb_ctx_check(b, per_ctx); > > unpin_b: > intel_context_unpin(b); > @@ -1688,7 +1706,7 @@ static int __live_lrc_indirect_ctx_bb(struct intel_engine_cs *engine) > return err; > } > > -static int live_lrc_indirect_ctx_bb(void *arg) > +static int lrc_wabb_ctx(void *arg, bool per_ctx) > { > struct intel_gt *gt = arg; > struct intel_engine_cs *engine; > @@ -1697,7 +1715,7 @@ static int live_lrc_indirect_ctx_bb(void *arg) > > for_each_engine(engine, gt, id) { > intel_engine_pm_get(engine); > - err = __live_lrc_indirect_ctx_bb(engine); > + err = __lrc_wabb_ctx(engine, per_ctx); > intel_engine_pm_put(engine); > > if (igt_flush_test(gt->i915)) > @@ -1710,6 +1728,16 @@ static int live_lrc_indirect_ctx_bb(void *arg) > return err; > } > > +static int live_lrc_indirect_ctx_bb(void *arg) > +{ > + return lrc_wabb_ctx(arg, false); > +} > + > +static int live_lrc_per_ctx_bb(void *arg) > +{ > + return lrc_wabb_ctx(arg, true); > +} > + > static void garbage_reset(struct intel_engine_cs *engine, > struct i915_request *rq) > { > @@ -1947,6 +1975,7 @@ int intel_lrc_live_selftests(struct drm_i915_private *i915) > SUBTEST(live_lrc_garbage), > SUBTEST(live_pphwsp_runtime), > SUBTEST(live_lrc_indirect_ctx_bb), > + SUBTEST(live_lrc_per_ctx_bb), > }; > > if (!HAS_LOGICAL_RING_CONTEXTS(i915)) > -- > 2.34.1 > >
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_regs.h b/drivers/gpu/drm/i915/gt/intel_engine_regs.h index fdd4ddd3a978a2..b8618ee3e3041a 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_regs.h @@ -118,6 +118,9 @@ #define CCID_EXTENDED_STATE_RESTORE BIT(2) #define CCID_EXTENDED_STATE_SAVE BIT(3) #define RING_BB_PER_CTX_PTR(base) _MMIO((base) + 0x1c0) /* gen8+ */ +#define PER_CTX_BB_FORCE BIT(2) +#define PER_CTX_BB_VALID BIT(0) + #define RING_INDIRECT_CTX(base) _MMIO((base) + 0x1c4) /* gen8+ */ #define RING_INDIRECT_CTX_OFFSET(base) _MMIO((base) + 0x1c8) /* gen8+ */ #define ECOSKPD(base) _MMIO((base) + 0x1d0) diff --git a/drivers/gpu/drm/i915/gt/intel_gt.h b/drivers/gpu/drm/i915/gt/intel_gt.h index 970bedf6b78a7b..50989fc2b6debe 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.h +++ b/drivers/gpu/drm/i915/gt/intel_gt.h @@ -82,6 +82,10 @@ struct drm_printer; ##__VA_ARGS__); \ } while (0) +#define NEEDS_FASTCOLOR_BLT_WABB(engine) ( \ + IS_GFX_GT_IP_RANGE(engine->gt, IP_VER(12, 55), IP_VER(12, 71)) && \ + engine->class == COPY_ENGINE_CLASS) + static inline bool gt_is_root(struct intel_gt *gt) { return !gt->info.id; diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h b/drivers/gpu/drm/i915/gt/intel_gt_types.h index def7dd0eb6f196..4917633f299dd5 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_types.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h @@ -307,6 +307,8 @@ enum intel_gt_scratch_field { /* 8 bytes */ INTEL_GT_SCRATCH_FIELD_COHERENTL3_WA = 256, + + INTEL_GT_SCRATCH_FIELD_DUMMY_BLIT = 384, }; #define intel_gt_support_legacy_fencing(gt) ((gt)->ggtt->num_fences > 0) diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index eaf66d90316655..96ef901113eae9 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -828,6 +828,18 @@ lrc_ring_indirect_offset_default(const struct intel_engine_cs *engine) return 0; } +static void +lrc_setup_bb_per_ctx(u32 *regs, + const struct intel_engine_cs *engine, + u32 ctx_bb_ggtt_addr) +{ + GEM_BUG_ON(lrc_ring_wa_bb_per_ctx(engine) == -1); + regs[lrc_ring_wa_bb_per_ctx(engine) + 1] = + ctx_bb_ggtt_addr | + PER_CTX_BB_FORCE | + PER_CTX_BB_VALID; +} + static void lrc_setup_indirect_ctx(u32 *regs, const struct intel_engine_cs *engine, @@ -1020,7 +1032,13 @@ static u32 context_wa_bb_offset(const struct intel_context *ce) return PAGE_SIZE * ce->wa_bb_page; } -static u32 *context_indirect_bb(const struct intel_context *ce) +/* + * per_ctx below determines which WABB section is used. + * When true, the function returns the location of the + * PER_CTX_BB. When false, the function returns the + * location of the INDIRECT_CTX. + */ +static u32 *context_wabb(const struct intel_context *ce, bool per_ctx) { void *ptr; @@ -1029,6 +1047,7 @@ static u32 *context_indirect_bb(const struct intel_context *ce) ptr = ce->lrc_reg_state; ptr -= LRC_STATE_OFFSET; /* back to start of context image */ ptr += context_wa_bb_offset(ce); + ptr += per_ctx ? PAGE_SIZE : 0; return ptr; } @@ -1105,7 +1124,8 @@ __lrc_alloc_state(struct intel_context *ce, struct intel_engine_cs *engine) if (GRAPHICS_VER(engine->i915) >= 12) { ce->wa_bb_page = context_size / PAGE_SIZE; - context_size += PAGE_SIZE; + /* INDIRECT_CTX and PER_CTX_BB need separate pages. */ + context_size += PAGE_SIZE * 2; } if (intel_context_is_parent(ce) && intel_engine_uses_guc(engine)) { @@ -1407,12 +1427,85 @@ gen12_emit_indirect_ctx_xcs(const struct intel_context *ce, u32 *cs) return gen12_emit_aux_table_inv(ce->engine, cs); } +static u32 *xehp_emit_fastcolor_blt_wabb(const struct intel_context *ce, u32 *cs) +{ + struct intel_gt *gt = ce->engine->gt; + int mocs = gt->mocs.uc_index << 1; + + /** + * Wa_16018031267 / Wa_16018063123 requires that SW forces the + * main copy engine arbitration into round robin mode. We + * additionally need to submit the following WABB blt command + * to produce 4 subblits with each subblit generating 0 byte + * write requests as WABB: + * + * XY_FASTCOLOR_BLT + * BG0 -> 5100000E + * BG1 -> 0000003F (Dest pitch) + * BG2 -> 00000000 (X1, Y1) = (0, 0) + * BG3 -> 00040001 (X2, Y2) = (1, 4) + * BG4 -> scratch + * BG5 -> scratch + * BG6-12 -> 00000000 + * BG13 -> 20004004 (Surf. Width= 2,Surf. Height = 5 ) + * BG14 -> 00000010 (Qpitch = 4) + * BG15 -> 00000000 + */ + *cs++ = XY_FAST_COLOR_BLT_CMD | (16 - 2); + *cs++ = FIELD_PREP(XY_FAST_COLOR_BLT_MOCS_MASK, mocs) | 0x3f; + *cs++ = 0; + *cs++ = 4 << 16 | 1; + *cs++ = lower_32_bits(i915_vma_offset(ce->vm->rsvd)); + *cs++ = upper_32_bits(i915_vma_offset(ce->vm->rsvd)); + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0x20004004; + *cs++ = 0x10; + *cs++ = 0; + + return cs; +} + +static u32 * +xehp_emit_per_ctx_bb(const struct intel_context *ce, u32 *cs) +{ + /* Wa_16018031267, Wa_16018063123 */ + if (NEEDS_FASTCOLOR_BLT_WABB(ce->engine)) + cs = xehp_emit_fastcolor_blt_wabb(ce, cs); + + return cs; +} + +static void +setup_per_ctx_bb(const struct intel_context *ce, + const struct intel_engine_cs *engine, + u32 *(*emit)(const struct intel_context *, u32 *)) +{ + /* Place PER_CTX_BB on next page after INDIRECT_CTX */ + u32 * const start = context_wabb(ce, true); + u32 *cs; + + cs = emit(ce, start); + + /* PER_CTX_BB must manually terminate */ + *cs++ = MI_BATCH_BUFFER_END; + + GEM_BUG_ON(cs - start > I915_GTT_PAGE_SIZE / sizeof(*cs)); + lrc_setup_bb_per_ctx(ce->lrc_reg_state, engine, + lrc_indirect_bb(ce) + PAGE_SIZE); +} + static void setup_indirect_ctx_bb(const struct intel_context *ce, const struct intel_engine_cs *engine, u32 *(*emit)(const struct intel_context *, u32 *)) { - u32 * const start = context_indirect_bb(ce); + u32 * const start = context_wabb(ce, false); u32 *cs; cs = emit(ce, start); @@ -1511,6 +1604,7 @@ u32 lrc_update_regs(const struct intel_context *ce, /* Mutually exclusive wrt to global indirect bb */ GEM_BUG_ON(engine->wa_ctx.indirect_ctx.size); setup_indirect_ctx_bb(ce, engine, fn); + setup_per_ctx_bb(ce, engine, xehp_emit_per_ctx_bb); } return lrc_descriptor(ce) | CTX_DESC_FORCE_RESTORE; diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c index 5f826b6dcf5d6f..e17b8777d21dc9 100644 --- a/drivers/gpu/drm/i915/gt/selftest_lrc.c +++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c @@ -1555,7 +1555,7 @@ static int live_lrc_isolation(void *arg) return err; } -static int indirect_ctx_submit_req(struct intel_context *ce) +static int wabb_ctx_submit_req(struct intel_context *ce) { struct i915_request *rq; int err = 0; @@ -1579,7 +1579,8 @@ static int indirect_ctx_submit_req(struct intel_context *ce) #define CTX_BB_CANARY_INDEX (CTX_BB_CANARY_OFFSET / sizeof(u32)) static u32 * -emit_indirect_ctx_bb_canary(const struct intel_context *ce, u32 *cs) +emit_wabb_ctx_canary(const struct intel_context *ce, + u32 *cs, bool per_ctx) { *cs++ = MI_STORE_REGISTER_MEM_GEN8 | MI_SRM_LRM_GLOBAL_GTT | @@ -1587,26 +1588,43 @@ emit_indirect_ctx_bb_canary(const struct intel_context *ce, u32 *cs) *cs++ = i915_mmio_reg_offset(RING_START(0)); *cs++ = i915_ggtt_offset(ce->state) + context_wa_bb_offset(ce) + - CTX_BB_CANARY_OFFSET; + CTX_BB_CANARY_OFFSET + + (per_ctx ? PAGE_SIZE : 0); *cs++ = 0; return cs; } +static u32 * +emit_indirect_ctx_bb_canary(const struct intel_context *ce, u32 *cs) +{ + return emit_wabb_ctx_canary(ce, cs, false); +} + +static u32 * +emit_per_ctx_bb_canary(const struct intel_context *ce, u32 *cs) +{ + return emit_wabb_ctx_canary(ce, cs, true); +} + static void -indirect_ctx_bb_setup(struct intel_context *ce) +wabb_ctx_setup(struct intel_context *ce, bool per_ctx) { - u32 *cs = context_indirect_bb(ce); + u32 *cs = context_wabb(ce, per_ctx); cs[CTX_BB_CANARY_INDEX] = 0xdeadf00d; - setup_indirect_ctx_bb(ce, ce->engine, emit_indirect_ctx_bb_canary); + if (per_ctx) + setup_per_ctx_bb(ce, ce->engine, emit_per_ctx_bb_canary); + else + setup_indirect_ctx_bb(ce, ce->engine, emit_indirect_ctx_bb_canary); } -static bool check_ring_start(struct intel_context *ce) +static bool check_ring_start(struct intel_context *ce, bool per_ctx) { const u32 * const ctx_bb = (void *)(ce->lrc_reg_state) - - LRC_STATE_OFFSET + context_wa_bb_offset(ce); + LRC_STATE_OFFSET + context_wa_bb_offset(ce) + + (per_ctx ? PAGE_SIZE : 0); if (ctx_bb[CTX_BB_CANARY_INDEX] == ce->lrc_reg_state[CTX_RING_START]) return true; @@ -1618,21 +1636,21 @@ static bool check_ring_start(struct intel_context *ce) return false; } -static int indirect_ctx_bb_check(struct intel_context *ce) +static int wabb_ctx_check(struct intel_context *ce, bool per_ctx) { int err; - err = indirect_ctx_submit_req(ce); + err = wabb_ctx_submit_req(ce); if (err) return err; - if (!check_ring_start(ce)) + if (!check_ring_start(ce, per_ctx)) return -EINVAL; return 0; } -static int __live_lrc_indirect_ctx_bb(struct intel_engine_cs *engine) +static int __lrc_wabb_ctx(struct intel_engine_cs *engine, bool per_ctx) { struct intel_context *a, *b; int err; @@ -1667,14 +1685,14 @@ static int __live_lrc_indirect_ctx_bb(struct intel_engine_cs *engine) * As ring start is restored apriori of starting the indirect ctx bb and * as it will be different for each context, it fits to this purpose. */ - indirect_ctx_bb_setup(a); - indirect_ctx_bb_setup(b); + wabb_ctx_setup(a, per_ctx); + wabb_ctx_setup(b, per_ctx); - err = indirect_ctx_bb_check(a); + err = wabb_ctx_check(a, per_ctx); if (err) goto unpin_b; - err = indirect_ctx_bb_check(b); + err = wabb_ctx_check(b, per_ctx); unpin_b: intel_context_unpin(b); @@ -1688,7 +1706,7 @@ static int __live_lrc_indirect_ctx_bb(struct intel_engine_cs *engine) return err; } -static int live_lrc_indirect_ctx_bb(void *arg) +static int lrc_wabb_ctx(void *arg, bool per_ctx) { struct intel_gt *gt = arg; struct intel_engine_cs *engine; @@ -1697,7 +1715,7 @@ static int live_lrc_indirect_ctx_bb(void *arg) for_each_engine(engine, gt, id) { intel_engine_pm_get(engine); - err = __live_lrc_indirect_ctx_bb(engine); + err = __lrc_wabb_ctx(engine, per_ctx); intel_engine_pm_put(engine); if (igt_flush_test(gt->i915)) @@ -1710,6 +1728,16 @@ static int live_lrc_indirect_ctx_bb(void *arg) return err; } +static int live_lrc_indirect_ctx_bb(void *arg) +{ + return lrc_wabb_ctx(arg, false); +} + +static int live_lrc_per_ctx_bb(void *arg) +{ + return lrc_wabb_ctx(arg, true); +} + static void garbage_reset(struct intel_engine_cs *engine, struct i915_request *rq) { @@ -1947,6 +1975,7 @@ int intel_lrc_live_selftests(struct drm_i915_private *i915) SUBTEST(live_lrc_garbage), SUBTEST(live_pphwsp_runtime), SUBTEST(live_lrc_indirect_ctx_bb), + SUBTEST(live_lrc_per_ctx_bb), }; if (!HAS_LOGICAL_RING_CONTEXTS(i915))