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drm/i915: introduce vm set_pages/clear_pages 

Move the setting/clearing of the vma->pages to a vm operation. Doing so
neatens things up a little, but more importantly gives us a sane place
to also set/clear the vma->pages_sizes, which we introduce later in
preparation for supporting huge-pages.

v2: remove redundant vma->pages check

v3: GEM_BUG_ON(vma->pages) following i915_vma_remove

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171006145041.21673-8-matthew.auld@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20171006221833.32439-7-chris@chris-wilson.co.uk
This commit is contained in:
Matthew Auld 2017-10-06 23:18:19 +01:00 committed by Chris Wilson
parent a5c0816626
commit fa3f46afd3
4 changed files with 66 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -205,8 +205,6 @@ static int ppgtt_bind_vma(struct i915_vma *vma,
return ret;
}
vma->pages = vma->obj->mm.pages;
/* Currently applicable only to VLV */
pte_flags = 0;
if (vma->obj->gt_ro)
@ -222,6 +220,26 @@ static void ppgtt_unbind_vma(struct i915_vma *vma)
vma->vm->clear_range(vma->vm, vma->node.start, vma->size);
}
static int ppgtt_set_pages(struct i915_vma *vma)
{
GEM_BUG_ON(vma->pages);
vma->pages = vma->obj->mm.pages;
return 0;
}
static void clear_pages(struct i915_vma *vma)
{
GEM_BUG_ON(!vma->pages);
if (vma->pages != vma->obj->mm.pages) {
sg_free_table(vma->pages);
kfree(vma->pages);
}
vma->pages = NULL;
}
static gen8_pte_t gen8_pte_encode(dma_addr_t addr,
enum i915_cache_level level)
{
@ -1452,6 +1470,8 @@ static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
ppgtt->base.cleanup = gen8_ppgtt_cleanup;
ppgtt->base.unbind_vma = ppgtt_unbind_vma;
ppgtt->base.bind_vma = ppgtt_bind_vma;
ppgtt->base.set_pages = ppgtt_set_pages;
ppgtt->base.clear_pages = clear_pages;
ppgtt->debug_dump = gen8_dump_ppgtt;
return 0;
@ -1894,6 +1914,8 @@ static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt)
ppgtt->base.insert_entries = gen6_ppgtt_insert_entries;
ppgtt->base.unbind_vma = ppgtt_unbind_vma;
ppgtt->base.bind_vma = ppgtt_bind_vma;
ppgtt->base.set_pages = ppgtt_set_pages;
ppgtt->base.clear_pages = clear_pages;
ppgtt->base.cleanup = gen6_ppgtt_cleanup;
ppgtt->debug_dump = gen6_dump_ppgtt;
@ -2405,12 +2427,6 @@ static int ggtt_bind_vma(struct i915_vma *vma,
struct drm_i915_gem_object *obj = vma->obj;
u32 pte_flags;
if (unlikely(!vma->pages)) {
int ret = i915_get_ggtt_vma_pages(vma);
if (ret)
return ret;
}
/* Currently applicable only to VLV */
pte_flags = 0;
if (obj->gt_ro)
@ -2447,12 +2463,6 @@ static int aliasing_gtt_bind_vma(struct i915_vma *vma,
u32 pte_flags;
int ret;
if (unlikely(!vma->pages)) {
ret = i915_get_ggtt_vma_pages(vma);
if (ret)
return ret;
}
/* Currently applicable only to VLV */
pte_flags = 0;
if (vma->obj->gt_ro)
@ -2467,7 +2477,7 @@ static int aliasing_gtt_bind_vma(struct i915_vma *vma,
vma->node.start,
vma->size);
if (ret)
goto err_pages;
return ret;
}
appgtt->base.insert_entries(&appgtt->base, vma, cache_level,
@ -2481,17 +2491,6 @@ static int aliasing_gtt_bind_vma(struct i915_vma *vma,
}
return 0;
err_pages:
if (!(vma->flags & (I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND))) {
if (vma->pages != vma->obj->mm.pages) {
GEM_BUG_ON(!vma->pages);
sg_free_table(vma->pages);
kfree(vma->pages);
}
vma->pages = NULL;
}
return ret;
}
static void aliasing_gtt_unbind_vma(struct i915_vma *vma)
@ -2529,6 +2528,19 @@ void i915_gem_gtt_finish_pages(struct drm_i915_gem_object *obj,
dma_unmap_sg(kdev, pages->sgl, pages->nents, PCI_DMA_BIDIRECTIONAL);
}
static int ggtt_set_pages(struct i915_vma *vma)
{
int ret;
GEM_BUG_ON(vma->pages);
ret = i915_get_ggtt_vma_pages(vma);
if (ret)
return ret;
return 0;
}
static void i915_gtt_color_adjust(const struct drm_mm_node *node,
unsigned long color,
u64 *start,
@ -3151,6 +3163,8 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
ggtt->base.cleanup = gen6_gmch_remove;
ggtt->base.bind_vma = ggtt_bind_vma;
ggtt->base.unbind_vma = ggtt_unbind_vma;
ggtt->base.set_pages = ggtt_set_pages;
ggtt->base.clear_pages = clear_pages;
ggtt->base.insert_page = gen8_ggtt_insert_page;
ggtt->base.clear_range = nop_clear_range;
if (!USES_FULL_PPGTT(dev_priv) || intel_scanout_needs_vtd_wa(dev_priv))
@ -3209,6 +3223,8 @@ static int gen6_gmch_probe(struct i915_ggtt *ggtt)
ggtt->base.insert_entries = gen6_ggtt_insert_entries;
ggtt->base.bind_vma = ggtt_bind_vma;
ggtt->base.unbind_vma = ggtt_unbind_vma;
ggtt->base.set_pages = ggtt_set_pages;
ggtt->base.clear_pages = clear_pages;
ggtt->base.cleanup = gen6_gmch_remove;
ggtt->invalidate = gen6_ggtt_invalidate;
@ -3254,6 +3270,8 @@ static int i915_gmch_probe(struct i915_ggtt *ggtt)
ggtt->base.clear_range = i915_ggtt_clear_range;
ggtt->base.bind_vma = ggtt_bind_vma;
ggtt->base.unbind_vma = ggtt_unbind_vma;
ggtt->base.set_pages = ggtt_set_pages;
ggtt->base.clear_pages = clear_pages;
ggtt->base.cleanup = i915_gmch_remove;
ggtt->invalidate = gmch_ggtt_invalidate;

2
drivers/gpu/drm/i915/i915_gem_gtt.h
View File

@ -335,6 +335,8 @@ struct i915_address_space {
int (*bind_vma)(struct i915_vma *vma,
enum i915_cache_level cache_level,
u32 flags);
int (*set_pages)(struct i915_vma *vma);
void (*clear_pages)(struct i915_vma *vma);
I915_SELFTEST_DECLARE(struct fault_attr fault_attr);
};

27
drivers/gpu/drm/i915/i915_vma.c
View File

@ -266,6 +266,8 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
if (bind_flags == 0)
return 0;
GEM_BUG_ON(!vma->pages);
trace_i915_vma_bind(vma, bind_flags);
ret = vma->vm->bind_vma(vma, cache_level, bind_flags);
if (ret)
@ -471,25 +473,31 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
if (ret)
return ret;
GEM_BUG_ON(vma->pages);
ret = vma->vm->set_pages(vma);
if (ret)
goto err_unpin;
if (flags & PIN_OFFSET_FIXED) {
u64 offset = flags & PIN_OFFSET_MASK;
if (!IS_ALIGNED(offset, alignment) ||
range_overflows(offset, size, end)) {
ret = -EINVAL;
goto err_unpin;
goto err_clear;
}
ret = i915_gem_gtt_reserve(vma->vm, &vma->node,
size, offset, obj->cache_level,
flags);
if (ret)
goto err_unpin;
goto err_clear;
} else {
ret = i915_gem_gtt_insert(vma->vm, &vma->node,
size, alignment, obj->cache_level,
start, end, flags);
if (ret)
goto err_unpin;
goto err_clear;
GEM_BUG_ON(vma->node.start < start);
GEM_BUG_ON(vma->node.start + vma->node.size > end);
@ -504,6 +512,8 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
return 0;
err_clear:
vma->vm->clear_pages(vma);
err_unpin:
i915_gem_object_unpin_pages(obj);
return ret;
@ -517,6 +527,8 @@ i915_vma_remove(struct i915_vma *vma)
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
GEM_BUG_ON(vma->flags & (I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND));
vma->vm->clear_pages(vma);
drm_mm_remove_node(&vma->node);
list_move_tail(&vma->vm_link, &vma->vm->unbound_list);
@ -569,8 +581,8 @@ int __i915_vma_do_pin(struct i915_vma *vma,
err_remove:
if ((bound & I915_VMA_BIND_MASK) == 0) {
GEM_BUG_ON(vma->pages);
i915_vma_remove(vma);
GEM_BUG_ON(vma->pages);
}
err_unpin:
__i915_vma_unpin(vma);
@ -695,13 +707,6 @@ int i915_vma_unbind(struct i915_vma *vma)
}
vma->flags &= ~(I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND);
if (vma->pages != obj->mm.pages) {
GEM_BUG_ON(!vma->pages);
sg_free_table(vma->pages);
kfree(vma->pages);
}
vma->pages = NULL;
i915_vma_remove(vma);
destroy:

11
drivers/gpu/drm/i915/selftests/mock_gtt.c
View File

@ -43,7 +43,6 @@ static int mock_bind_ppgtt(struct i915_vma *vma,
u32 flags)
{
GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
vma->pages = vma->obj->mm.pages;
vma->flags |= I915_VMA_LOCAL_BIND;
return 0;
}
@ -84,6 +83,8 @@ mock_ppgtt(struct drm_i915_private *i915,
ppgtt->base.insert_entries = mock_insert_entries;
ppgtt->base.bind_vma = mock_bind_ppgtt;
ppgtt->base.unbind_vma = mock_unbind_ppgtt;
ppgtt->base.set_pages = ppgtt_set_pages;
ppgtt->base.clear_pages = clear_pages;
ppgtt->base.cleanup = mock_cleanup;
return ppgtt;
@ -93,12 +94,6 @@ static int mock_bind_ggtt(struct i915_vma *vma,
enum i915_cache_level cache_level,
u32 flags)
{
int err;
err = i915_get_ggtt_vma_pages(vma);
if (err)
return err;
vma->flags |= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
return 0;
}
@ -124,6 +119,8 @@ void mock_init_ggtt(struct drm_i915_private *i915)
ggtt->base.insert_entries = mock_insert_entries;
ggtt->base.bind_vma = mock_bind_ggtt;
ggtt->base.unbind_vma = mock_unbind_ggtt;
ggtt->base.set_pages = ggtt_set_pages;
ggtt->base.clear_pages = clear_pages;
ggtt->base.cleanup = mock_cleanup;
i915_address_space_init(&ggtt->base, i915, "global");