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author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-06-12 09:18:15 +0100 |
---|---|---|
committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-06-12 12:57:18 +0100 |
commit | a9ded78535a109389cd2ca38a22c8d5c0099f71e (patch) | |
tree | a6c39488bbcaefb1e26a65df8a43d21b4021600d /drivers/gpu/drm/i915/i915_gem_gtt.c | |
parent | 35ac40d8b65ab5bd09b683720bca96a1f5a0625b (diff) | |
download | linux-a9ded78535a109389cd2ca38a22c8d5c0099f71e.tar.bz2 |
drm/i915/gtt: Onionify error handling for gen6_ppgtt_create
Pull the empty stubs together into the top level gen6_ppgtt_create, and
tear each one down on error in proper onion order (rather than use
Joonas' pet hate of calling the cleanup function in indeterminable
state).
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Matthew Auld <matthew.william.auld@gmail.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180612081815.3585-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_gtt.c')
-rw-r--r-- | drivers/gpu/drm/i915/i915_gem_gtt.c | 81 |
1 files changed, 39 insertions, 42 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index 62991e6cf1d5..40a839119d23 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -1875,7 +1875,7 @@ unwind_out: return -ENOMEM; } -static int gen6_init_scratch(struct i915_address_space *vm) +static int gen6_ppgtt_init_scratch(struct i915_address_space *vm) { int ret; @@ -1894,33 +1894,37 @@ static int gen6_init_scratch(struct i915_address_space *vm) return 0; } -static void gen6_free_scratch(struct i915_address_space *vm) +static void gen6_ppgtt_free_scratch(struct i915_address_space *vm) { free_pt(vm, vm->scratch_pt); cleanup_scratch_page(vm); } -static void gen6_ppgtt_cleanup(struct i915_address_space *vm) +static void gen6_ppgtt_free_pd(struct gen6_hw_ppgtt *ppgtt) { - struct gen6_hw_ppgtt *ppgtt = to_gen6_ppgtt(i915_vm_to_ppgtt(vm)); struct i915_page_table *pt; u32 pde; - drm_mm_remove_node(&ppgtt->node); - gen6_for_all_pdes(pt, &ppgtt->base.pd, pde) - if (pt != vm->scratch_pt) - free_pt(vm, pt); + if (pt != ppgtt->base.vm.scratch_pt) + free_pt(&ppgtt->base.vm, pt); +} - gen6_free_scratch(vm); +static void gen6_ppgtt_cleanup(struct i915_address_space *vm) +{ + struct gen6_hw_ppgtt *ppgtt = to_gen6_ppgtt(i915_vm_to_ppgtt(vm)); + + drm_mm_remove_node(&ppgtt->node); + + gen6_ppgtt_free_pd(ppgtt); + gen6_ppgtt_free_scratch(vm); } static int gen6_ppgtt_allocate_page_directories(struct gen6_hw_ppgtt *ppgtt) { - struct i915_address_space *vm = &ppgtt->base.vm; struct drm_i915_private *dev_priv = ppgtt->base.vm.i915; struct i915_ggtt *ggtt = &dev_priv->ggtt; - int ret; + int err; /* PPGTT PDEs reside in the GGTT and consists of 512 entries. The * allocator works in address space sizes, so it's multiplied by page @@ -1928,17 +1932,13 @@ static int gen6_ppgtt_allocate_page_directories(struct gen6_hw_ppgtt *ppgtt) */ BUG_ON(!drm_mm_initialized(&ggtt->vm.mm)); - ret = gen6_init_scratch(vm); - if (ret) - return ret; - - ret = i915_gem_gtt_insert(&ggtt->vm, &ppgtt->node, + err = i915_gem_gtt_insert(&ggtt->vm, &ppgtt->node, GEN6_PD_SIZE, GEN6_PD_ALIGN, I915_COLOR_UNEVICTABLE, 0, ggtt->vm.total, PIN_HIGH); - if (ret) - goto err_out; + if (err) + return err; if (ppgtt->node.start < ggtt->mappable_end) DRM_DEBUG("Forced to use aperture for PDEs\n"); @@ -1950,15 +1950,6 @@ static int gen6_ppgtt_allocate_page_directories(struct gen6_hw_ppgtt *ppgtt) ppgtt->base.pd.base.ggtt_offset / sizeof(gen6_pte_t); return 0; - -err_out: - gen6_free_scratch(vm); - return ret; -} - -static int gen6_ppgtt_alloc(struct gen6_hw_ppgtt *ppgtt) -{ - return gen6_ppgtt_allocate_page_directories(ppgtt); } static void gen6_scratch_va_range(struct gen6_hw_ppgtt *ppgtt, @@ -1984,21 +1975,8 @@ static struct i915_hw_ppgtt *gen6_ppgtt_create(struct drm_i915_private *i915) ppgtt->base.vm.i915 = i915; ppgtt->base.vm.dma = &i915->drm.pdev->dev; - ppgtt->base.vm.pte_encode = ggtt->vm.pte_encode; - - err = gen6_ppgtt_alloc(ppgtt); - if (err) - goto err_free; - ppgtt->base.vm.total = I915_PDES * GEN6_PTES * PAGE_SIZE; - gen6_scratch_va_range(ppgtt, 0, ppgtt->base.vm.total); - gen6_write_page_range(&ppgtt->base, 0, ppgtt->base.vm.total); - - err = gen6_alloc_va_range(&ppgtt->base.vm, 0, ppgtt->base.vm.total); - if (err) - goto err_cleanup; - ppgtt->base.vm.clear_range = gen6_ppgtt_clear_range; ppgtt->base.vm.insert_entries = gen6_ppgtt_insert_entries; ppgtt->base.vm.cleanup = gen6_ppgtt_cleanup; @@ -2009,6 +1987,23 @@ static struct i915_hw_ppgtt *gen6_ppgtt_create(struct drm_i915_private *i915) ppgtt->base.vm.vma_ops.set_pages = ppgtt_set_pages; ppgtt->base.vm.vma_ops.clear_pages = clear_pages; + ppgtt->base.vm.pte_encode = ggtt->vm.pte_encode; + + err = gen6_ppgtt_init_scratch(&ppgtt->base.vm); + if (err) + goto err_free; + + err = gen6_ppgtt_allocate_page_directories(ppgtt); + if (err) + goto err_scratch; + + gen6_scratch_va_range(ppgtt, 0, ppgtt->base.vm.total); + gen6_write_page_range(&ppgtt->base, 0, ppgtt->base.vm.total); + + err = gen6_alloc_va_range(&ppgtt->base.vm, 0, ppgtt->base.vm.total); + if (err) + goto err_pd; + DRM_DEBUG_DRIVER("Allocated pde space (%lldM) at GTT entry: %llx\n", ppgtt->node.size >> 20, ppgtt->node.start / PAGE_SIZE); @@ -2018,8 +2013,10 @@ static struct i915_hw_ppgtt *gen6_ppgtt_create(struct drm_i915_private *i915) return &ppgtt->base; -err_cleanup: - gen6_ppgtt_cleanup(&ppgtt->base.vm); +err_pd: + gen6_ppgtt_free_pd(ppgtt); +err_scratch: + gen6_ppgtt_free_scratch(&ppgtt->base.vm); err_free: kfree(ppgtt); return ERR_PTR(err); |