From: Chris Wilson Date: Mon, 4 Jun 2018 14:15:52 +0100 Subject: drm/i915/gtt: Remove obsolete switch_mm hooks for gen8+ Git-commit: 30aacd3fe7f16bc577c612b710de8f047c2c492a Patch-mainline: v4.19-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 As the ppgtt for execlists is tightly coupled to the executing context, and not switch separately, we no longer use the ppgtt->switch_mm hooks on gen8+. Remove them. References: 79e6770cb1f5 ("drm/i915: Remove obsolete ringbuffer emission for gen8+") Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Mika Kuoppala Cc: Matthew Auld Reviewed-by: Mika Kuoppala Link: https://patchwork.freedesktop.org/patch/msgid/20180604131552.29370-1-chris@chris-wilson.co.uk Acked-by: Petr Tesarik --- drivers/gpu/drm/i915/i915_gem_gtt.c | 49 ------------------------------------ 1 file changed, 49 deletions(-) --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -773,53 +773,6 @@ static void gen8_initialize_pml4(struct memset_p((void **)pml4->pdps, vm->scratch_pdp, GEN8_PML4ES_PER_PML4); } -/* Broadwell Page Directory Pointer Descriptors */ -static int gen8_write_pdp(struct i915_request *rq, - unsigned entry, - dma_addr_t addr) -{ - struct intel_engine_cs *engine = rq->engine; - u32 *cs; - - BUG_ON(entry >= 4); - - cs = intel_ring_begin(rq, 6); - if (IS_ERR(cs)) - return PTR_ERR(cs); - - *cs++ = MI_LOAD_REGISTER_IMM(1); - *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_UDW(engine, entry)); - *cs++ = upper_32_bits(addr); - *cs++ = MI_LOAD_REGISTER_IMM(1); - *cs++ = i915_mmio_reg_offset(GEN8_RING_PDP_LDW(engine, entry)); - *cs++ = lower_32_bits(addr); - intel_ring_advance(rq, cs); - - return 0; -} - -static int gen8_mm_switch_3lvl(struct i915_hw_ppgtt *ppgtt, - struct i915_request *rq) -{ - int i, ret; - - for (i = GEN8_3LVL_PDPES - 1; i >= 0; i--) { - const dma_addr_t pd_daddr = i915_page_dir_dma_addr(ppgtt, i); - - ret = gen8_write_pdp(rq, i, pd_daddr); - if (ret) - return ret; - } - - return 0; -} - -static int gen8_mm_switch_4lvl(struct i915_hw_ppgtt *ppgtt, - struct i915_request *rq) -{ - return gen8_write_pdp(rq, 0, px_dma(&ppgtt->pml4)); -} - /* PDE TLBs are a pain to invalidate on GEN8+. When we modify * the page table structures, we mark them dirty so that * context switching/execlist queuing code takes extra steps @@ -1638,7 +1591,6 @@ static int gen8_ppgtt_init(struct i915_h gen8_initialize_pml4(&ppgtt->base, &ppgtt->pml4); - ppgtt->switch_mm = gen8_mm_switch_4lvl; ppgtt->base.allocate_va_range = gen8_ppgtt_alloc_4lvl; ppgtt->base.insert_entries = gen8_ppgtt_insert_4lvl; ppgtt->base.clear_range = gen8_ppgtt_clear_4lvl; @@ -1655,7 +1607,6 @@ static int gen8_ppgtt_init(struct i915_h } } - ppgtt->switch_mm = gen8_mm_switch_3lvl; ppgtt->base.allocate_va_range = gen8_ppgtt_alloc_3lvl; ppgtt->base.insert_entries = gen8_ppgtt_insert_3lvl; ppgtt->base.clear_range = gen8_ppgtt_clear_3lvl;