From: Mika Kuoppala Date: Tue, 28 Feb 2017 15:28:09 +0000 (+0200) Subject: drm/i915/gtt: Prefer i915_vm_is_48bit() over macro X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1e6437b0e064746a4a2b6b3578c639797cafe4b1;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/i915/gtt: Prefer i915_vm_is_48bit() over macro If we setup the vm size early, we can use the newly introduced i915_vm_is_48bit() in majority of callsites wanting to know the vm size. As we operate either with 3lvl or 4lvl page table structure, wrap the vm size query inside a function which tells us if 4lvl setup is needed for particular vm, as the following code uses the function names where level is noted. v2: use_4lvl (Chris) Signed-off-by: Mika Kuoppala Reviewed-by: Chris Wilson Link: http://patchwork.freedesktop.org/patch/msgid/1488295691-9404-3-git-send-email-mika.kuoppala@intel.com --- diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 5299600b4733..9399906e5528 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -548,13 +548,18 @@ static void __pdp_fini(struct i915_page_directory_pointer *pdp) pdp->page_directory = NULL; } +static inline bool use_4lvl(const struct i915_address_space *vm) +{ + return i915_vm_is_48bit(vm); +} + static struct i915_page_directory_pointer * alloc_pdp(struct i915_address_space *vm) { struct i915_page_directory_pointer *pdp; int ret = -ENOMEM; - WARN_ON(!USES_FULL_48BIT_PPGTT(vm->i915)); + WARN_ON(!use_4lvl(vm)); pdp = kzalloc(sizeof(*pdp), GFP_KERNEL); if (!pdp) @@ -582,10 +587,12 @@ static void free_pdp(struct i915_address_space *vm, struct i915_page_directory_pointer *pdp) { __pdp_fini(pdp); - if (USES_FULL_48BIT_PPGTT(vm->i915)) { - cleanup_px(vm, pdp); - kfree(pdp); - } + + if (!use_4lvl(vm)) + return; + + cleanup_px(vm, pdp); + kfree(pdp); } static void gen8_initialize_pdp(struct i915_address_space *vm, @@ -739,7 +746,7 @@ static void gen8_ppgtt_set_pdpe(struct i915_address_space *vm, gen8_ppgtt_pdpe_t *vaddr; pdp->page_directory[pdpe] = pd; - if (!USES_FULL_48BIT_PPGTT(vm->i915)) + if (!use_4lvl(vm)) return; vaddr = kmap_atomic_px(pdp); @@ -804,7 +811,7 @@ static void gen8_ppgtt_clear_4lvl(struct i915_address_space *vm, struct i915_page_directory_pointer *pdp; unsigned int pml4e; - GEM_BUG_ON(!USES_FULL_48BIT_PPGTT(vm->i915)); + GEM_BUG_ON(!use_4lvl(vm)); gen8_for_each_pml4e(pdp, pml4, start, length, pml4e) { GEM_BUG_ON(pdp == vm->scratch_pdp); @@ -968,7 +975,7 @@ static int gen8_init_scratch(struct i915_address_space *vm) goto free_pt; } - if (USES_FULL_48BIT_PPGTT(dev)) { + if (use_4lvl(vm)) { vm->scratch_pdp = alloc_pdp(vm); if (IS_ERR(vm->scratch_pdp)) { ret = PTR_ERR(vm->scratch_pdp); @@ -978,7 +985,7 @@ static int gen8_init_scratch(struct i915_address_space *vm) gen8_initialize_pt(vm, vm->scratch_pt); gen8_initialize_pd(vm, vm->scratch_pd); - if (USES_FULL_48BIT_PPGTT(dev_priv)) + if (use_4lvl(vm)) gen8_initialize_pdp(vm, vm->scratch_pdp); return 0; @@ -995,12 +1002,13 @@ free_scratch_page: static int gen8_ppgtt_notify_vgt(struct i915_hw_ppgtt *ppgtt, bool create) { + struct i915_address_space *vm = &ppgtt->base; + struct drm_i915_private *dev_priv = vm->i915; enum vgt_g2v_type msg; - struct drm_i915_private *dev_priv = ppgtt->base.i915; int i; - if (USES_FULL_48BIT_PPGTT(dev_priv)) { - u64 daddr = px_dma(&ppgtt->pml4); + if (use_4lvl(vm)) { + const u64 daddr = px_dma(&ppgtt->pml4); I915_WRITE(vgtif_reg(pdp[0].lo), lower_32_bits(daddr)); I915_WRITE(vgtif_reg(pdp[0].hi), upper_32_bits(daddr)); @@ -1009,7 +1017,7 @@ static int gen8_ppgtt_notify_vgt(struct i915_hw_ppgtt *ppgtt, bool create) VGT_G2V_PPGTT_L4_PAGE_TABLE_DESTROY); } else { for (i = 0; i < GEN8_LEGACY_PDPES; i++) { - u64 daddr = i915_page_dir_dma_addr(ppgtt, i); + const u64 daddr = i915_page_dir_dma_addr(ppgtt, i); I915_WRITE(vgtif_reg(pdp[i].lo), lower_32_bits(daddr)); I915_WRITE(vgtif_reg(pdp[i].hi), upper_32_bits(daddr)); @@ -1026,7 +1034,7 @@ static int gen8_ppgtt_notify_vgt(struct i915_hw_ppgtt *ppgtt, bool create) static void gen8_free_scratch(struct i915_address_space *vm) { - if (USES_FULL_48BIT_PPGTT(vm->i915)) + if (use_4lvl(vm)) free_pdp(vm, vm->scratch_pdp); free_pd(vm, vm->scratch_pd); free_pt(vm, vm->scratch_pt); @@ -1072,10 +1080,10 @@ static void gen8_ppgtt_cleanup(struct i915_address_space *vm) if (intel_vgpu_active(dev_priv)) gen8_ppgtt_notify_vgt(ppgtt, false); - if (!USES_FULL_48BIT_PPGTT(vm->i915)) - gen8_ppgtt_cleanup_3lvl(&ppgtt->base, &ppgtt->pdp); - else + if (use_4lvl(vm)) gen8_ppgtt_cleanup_4lvl(ppgtt); + else + gen8_ppgtt_cleanup_3lvl(&ppgtt->base, &ppgtt->pdp); gen8_free_scratch(vm); } @@ -1258,9 +1266,7 @@ static void gen8_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) gen8_pte_encode(vm->scratch_page.daddr, I915_CACHE_LLC); u64 start = 0, length = ppgtt->base.total; - if (!USES_FULL_48BIT_PPGTT(vm->i915)) { - gen8_dump_pdp(ppgtt, &ppgtt->pdp, start, length, scratch_pte, m); - } else { + if (use_4lvl(vm)) { u64 pml4e; struct i915_pml4 *pml4 = &ppgtt->pml4; struct i915_page_directory_pointer *pdp; @@ -1272,6 +1278,8 @@ static void gen8_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) seq_printf(m, " PML4E #%llu\n", pml4e); gen8_dump_pdp(ppgtt, pdp, start, length, scratch_pte, m); } + } else { + gen8_dump_pdp(ppgtt, &ppgtt->pdp, start, length, scratch_pte, m); } } @@ -1316,12 +1324,19 @@ unwind: */ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt) { - struct drm_i915_private *dev_priv = ppgtt->base.i915; + struct i915_address_space *vm = &ppgtt->base; + struct drm_i915_private *dev_priv = vm->i915; int ret; + ppgtt->base.total = USES_FULL_48BIT_PPGTT(dev_priv) ? + 1ULL << 48 : + 1ULL << 32; + ret = gen8_init_scratch(&ppgtt->base); - if (ret) + if (ret) { + ppgtt->base.total = 0; return ret; + } ppgtt->base.cleanup = gen8_ppgtt_cleanup; ppgtt->base.unbind_vma = ppgtt_unbind_vma; @@ -1334,14 +1349,13 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt) if (IS_CHERRYVIEW(dev_priv) || IS_BROXTON(dev_priv)) ppgtt->base.pt_kmap_wc = true; - if (USES_FULL_48BIT_PPGTT(dev_priv)) { + if (use_4lvl(vm)) { ret = setup_px(&ppgtt->base, &ppgtt->pml4); if (ret) goto free_scratch; gen8_initialize_pml4(&ppgtt->base, &ppgtt->pml4); - ppgtt->base.total = 1ULL << 48; ppgtt->switch_mm = gen8_48b_mm_switch; ppgtt->base.allocate_va_range = gen8_ppgtt_alloc_4lvl; @@ -1352,7 +1366,6 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt) if (ret) goto free_scratch; - ppgtt->base.total = 1ULL << 32; ppgtt->switch_mm = gen8_legacy_mm_switch; if (intel_vgpu_active(dev_priv)) {