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@xxxxxxxxxxxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Cc: Matthew Auld <matthew.william.auld@xxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.william.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 81 ++++++++++++++---------------
1 file 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 cc0e747b9286..e9fcc4370b1a 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1875,7 +1875,7 @@ static int gen6_alloc_va_range(struct i915_address_space *vm,
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);
--
2.17.1
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