| Message ID | 20230831150955.36525-2-jonathan.cavitt@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Apply Wa_16018031267 / Wa_16018063123 | expand |
On Thu, Aug 31, 2023 at 08:09:54AM -0700, Jonathan Cavitt wrote: > From: Nirmoy Das <nirmoy.das@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> Drive-by comment: since Nirmoy is already listed as the author of this patch, we probably don't need a c-d-b here. However we do need his s-o-b line. Matt > Signed-off-by: Jonathan Cavitt <jonathan.cavitt@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 | 107 +++++++++++++++++++- > drivers/gpu/drm/i915/gt/selftest_lrc.c | 65 ++++++++---- > 5 files changed, 160 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 6b9d9f8376692..2e06bea73297a 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 239848bcb2a42..40cc0005dd735 100644 > --- a/drivers/gpu/drm/i915/gt/intel_gt.h > +++ b/drivers/gpu/drm/i915/gt/intel_gt.h > @@ -83,6 +83,10 @@ 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 def7dd0eb6f19..4917633f299dd 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 967fe4d77a874..1e0c1438f2cd1 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, > @@ -997,7 +1009,13 @@ 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; > > @@ -1006,6 +1024,7 @@ 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; > } > @@ -1082,7 +1101,8 @@ __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)) { > @@ -1370,12 +1390,92 @@ 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; > + u32 addr = intel_gt_scratch_offset(gt, INTEL_GT_SCRATCH_FIELD_DUMMY_BLIT); > + > + /** > + * 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++ = addr; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0; > + *cs++ = 0x20004004; > + *cs++ = 0x10; > + *cs++ = 0; > + > + *cs++ = MI_BATCH_BUFFER_END; > + > + 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); > + > + /* Skip PER_CTX_BB setup when not needed. */ > + if (cs == start) > + return; > + > + GEM_BUG_ON(cs - start > I915_GTT_PAGE_SIZE / sizeof(*cs)); > + while ((unsigned long)cs % CACHELINE_BYTES) > + *cs++ = MI_NOOP; > + > + 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); > @@ -1474,6 +1574,7 @@ 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 5f826b6dcf5d6..ba0d6293ddeac 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 / sizeof(u32) : 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)) > -- > 2.25.1 >
On 8/31/2023 7:40 PM, Matt Roper wrote: > On Thu, Aug 31, 2023 at 08:09:54AM -0700, Jonathan Cavitt wrote: >> From: Nirmoy Das <nirmoy.das@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> > Drive-by comment: since Nirmoy is already listed as the author of this > patch, we probably don't need a c-d-b here. However we do need his > s-o-b line. This needed to be amended with git commit --amend --author=Jonathan Cavitt <jonathan.cavitt@intel.com> --no-edit I wanted Jonathan to take over the authorship as Jonathan is working it. Regards, Nirmoy > > > Matt > >> Signed-off-by: Jonathan Cavitt <jonathan.cavitt@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 | 107 +++++++++++++++++++- >> drivers/gpu/drm/i915/gt/selftest_lrc.c | 65 ++++++++---- >> 5 files changed, 160 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 6b9d9f8376692..2e06bea73297a 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 239848bcb2a42..40cc0005dd735 100644 >> --- a/drivers/gpu/drm/i915/gt/intel_gt.h >> +++ b/drivers/gpu/drm/i915/gt/intel_gt.h >> @@ -83,6 +83,10 @@ 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 def7dd0eb6f19..4917633f299dd 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 967fe4d77a874..1e0c1438f2cd1 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, >> @@ -997,7 +1009,13 @@ 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; >> >> @@ -1006,6 +1024,7 @@ 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; >> } >> @@ -1082,7 +1101,8 @@ __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)) { >> @@ -1370,12 +1390,92 @@ 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; >> + u32 addr = intel_gt_scratch_offset(gt, INTEL_GT_SCRATCH_FIELD_DUMMY_BLIT); >> + >> + /** >> + * 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++ = addr; >> + *cs++ = 0; >> + *cs++ = 0; >> + *cs++ = 0; >> + *cs++ = 0; >> + *cs++ = 0; >> + *cs++ = 0; >> + *cs++ = 0; >> + *cs++ = 0; >> + *cs++ = 0x20004004; >> + *cs++ = 0x10; >> + *cs++ = 0; >> + >> + *cs++ = MI_BATCH_BUFFER_END; >> + >> + 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); >> + >> + /* Skip PER_CTX_BB setup when not needed. */ >> + if (cs == start) >> + return; >> + >> + GEM_BUG_ON(cs - start > I915_GTT_PAGE_SIZE / sizeof(*cs)); >> + while ((unsigned long)cs % CACHELINE_BYTES) >> + *cs++ = MI_NOOP; >> + >> + 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); >> @@ -1474,6 +1574,7 @@ 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 5f826b6dcf5d6..ba0d6293ddeac 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 / sizeof(u32) : 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)) >> -- >> 2.25.1 >>
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_regs.h b/drivers/gpu/drm/i915/gt/intel_engine_regs.h index 6b9d9f8376692..2e06bea73297a 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 239848bcb2a42..40cc0005dd735 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.h +++ b/drivers/gpu/drm/i915/gt/intel_gt.h @@ -83,6 +83,10 @@ 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 def7dd0eb6f19..4917633f299dd 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 967fe4d77a874..1e0c1438f2cd1 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, @@ -997,7 +1009,13 @@ 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; @@ -1006,6 +1024,7 @@ 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; } @@ -1082,7 +1101,8 @@ __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)) { @@ -1370,12 +1390,92 @@ 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; + u32 addr = intel_gt_scratch_offset(gt, INTEL_GT_SCRATCH_FIELD_DUMMY_BLIT); + + /** + * 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++ = addr; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0; + *cs++ = 0x20004004; + *cs++ = 0x10; + *cs++ = 0; + + *cs++ = MI_BATCH_BUFFER_END; + + 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); + + /* Skip PER_CTX_BB setup when not needed. */ + if (cs == start) + return; + + GEM_BUG_ON(cs - start > I915_GTT_PAGE_SIZE / sizeof(*cs)); + while ((unsigned long)cs % CACHELINE_BYTES) + *cs++ = MI_NOOP; + + 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); @@ -1474,6 +1574,7 @@ 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 5f826b6dcf5d6..ba0d6293ddeac 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 / sizeof(u32) : 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))