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path: root/drivers/gpu/drm/i915
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Diffstat (limited to 'drivers/gpu/drm/i915')
-rw-r--r--drivers/gpu/drm/i915/i915_drv.h17
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c24
-rw-r--r--drivers/gpu/drm/i915/i915_gem_dmabuf.c13
-rw-r--r--drivers/gpu/drm/i915/i915_gem_tiling.c18
4 files changed, 31 insertions, 41 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 71f285c56f1e..1246a31c0243 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1528,17 +1528,12 @@ void i915_gem_lastclose(struct drm_device *dev);
int __must_check i915_gem_object_get_pages(struct drm_i915_gem_object *obj);
static inline struct page *i915_gem_object_get_page(struct drm_i915_gem_object *obj, int n)
{
- struct scatterlist *sg = obj->pages->sgl;
- int nents = obj->pages->nents;
- while (nents > SG_MAX_SINGLE_ALLOC) {
- if (n < SG_MAX_SINGLE_ALLOC - 1)
- break;
-
- sg = sg_chain_ptr(sg + SG_MAX_SINGLE_ALLOC - 1);
- n -= SG_MAX_SINGLE_ALLOC - 1;
- nents -= SG_MAX_SINGLE_ALLOC - 1;
- }
- return sg_page(sg+n);
+ struct sg_page_iter sg_iter;
+
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, n)
+ return sg_iter.page;
+
+ return NULL;
}
static inline void i915_gem_object_pin_pages(struct drm_i915_gem_object *obj)
{
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 30117dc52212..5cf6140354db 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -411,8 +411,7 @@ i915_gem_shmem_pread(struct drm_device *dev,
int obj_do_bit17_swizzling, page_do_bit17_swizzling;
int prefaulted = 0;
int needs_clflush = 0;
- struct scatterlist *sg;
- int i;
+ struct sg_page_iter sg_iter;
user_data = to_user_ptr(args->data_ptr);
remain = args->size;
@@ -441,11 +440,9 @@ i915_gem_shmem_pread(struct drm_device *dev,
offset = args->offset;
- for_each_sg(obj->pages->sgl, sg, obj->pages->nents, i) {
- struct page *page;
-
- if (i < offset >> PAGE_SHIFT)
- continue;
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents,
+ offset >> PAGE_SHIFT) {
+ struct page *page = sg_iter.page;
if (remain <= 0)
break;
@@ -460,7 +457,6 @@ i915_gem_shmem_pread(struct drm_device *dev,
if ((shmem_page_offset + page_length) > PAGE_SIZE)
page_length = PAGE_SIZE - shmem_page_offset;
- page = sg_page(sg);
page_do_bit17_swizzling = obj_do_bit17_swizzling &&
(page_to_phys(page) & (1 << 17)) != 0;
@@ -732,8 +728,7 @@ i915_gem_shmem_pwrite(struct drm_device *dev,
int hit_slowpath = 0;
int needs_clflush_after = 0;
int needs_clflush_before = 0;
- int i;
- struct scatterlist *sg;
+ struct sg_page_iter sg_iter;
user_data = to_user_ptr(args->data_ptr);
remain = args->size;
@@ -768,13 +763,11 @@ i915_gem_shmem_pwrite(struct drm_device *dev,
offset = args->offset;
obj->dirty = 1;
- for_each_sg(obj->pages->sgl, sg, obj->pages->nents, i) {
- struct page *page;
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents,
+ offset >> PAGE_SHIFT) {
+ struct page *page = sg_iter.page;
int partial_cacheline_write;
- if (i < offset >> PAGE_SHIFT)
- continue;
-
if (remain <= 0)
break;
@@ -796,7 +789,6 @@ i915_gem_shmem_pwrite(struct drm_device *dev,
((shmem_page_offset | page_length)
& (boot_cpu_data.x86_clflush_size - 1));
- page = sg_page(sg);
page_do_bit17_swizzling = obj_do_bit17_swizzling &&
(page_to_phys(page) & (1 << 17)) != 0;
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index 6a5af6828624..898615d2d5e2 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -62,7 +62,7 @@ static struct sg_table *i915_gem_map_dma_buf(struct dma_buf_attachment *attachme
src = obj->pages->sgl;
dst = st->sgl;
for (i = 0; i < obj->pages->nents; i++) {
- sg_set_page(dst, sg_page(src), PAGE_SIZE, 0);
+ sg_set_page(dst, sg_page(src), src->length, 0);
dst = sg_next(dst);
src = sg_next(src);
}
@@ -105,7 +105,7 @@ static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
{
struct drm_i915_gem_object *obj = dma_buf->priv;
struct drm_device *dev = obj->base.dev;
- struct scatterlist *sg;
+ struct sg_page_iter sg_iter;
struct page **pages;
int ret, i;
@@ -124,14 +124,15 @@ static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
ret = -ENOMEM;
- pages = drm_malloc_ab(obj->pages->nents, sizeof(struct page *));
+ pages = drm_malloc_ab(obj->base.size >> PAGE_SHIFT, sizeof(*pages));
if (pages == NULL)
goto error;
- for_each_sg(obj->pages->sgl, sg, obj->pages->nents, i)
- pages[i] = sg_page(sg);
+ i = 0;
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0);
+ pages[i++] = sg_iter.page;
- obj->dma_buf_vmapping = vmap(pages, obj->pages->nents, 0, PAGE_KERNEL);
+ obj->dma_buf_vmapping = vmap(pages, i, 0, PAGE_KERNEL);
drm_free_large(pages);
if (!obj->dma_buf_vmapping)
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index abcba2f5a788..f799708bcb85 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -473,28 +473,29 @@ i915_gem_swizzle_page(struct page *page)
void
i915_gem_object_do_bit_17_swizzle(struct drm_i915_gem_object *obj)
{
- struct scatterlist *sg;
- int page_count = obj->base.size >> PAGE_SHIFT;
+ struct sg_page_iter sg_iter;
int i;
if (obj->bit_17 == NULL)
return;
- for_each_sg(obj->pages->sgl, sg, page_count, i) {
- struct page *page = sg_page(sg);
+ i = 0;
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) {
+ struct page *page = sg_iter.page;
char new_bit_17 = page_to_phys(page) >> 17;
if ((new_bit_17 & 0x1) !=
(test_bit(i, obj->bit_17) != 0)) {
i915_gem_swizzle_page(page);
set_page_dirty(page);
}
+ i++;
}
}
void
i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj)
{
- struct scatterlist *sg;
+ struct sg_page_iter sg_iter;
int page_count = obj->base.size >> PAGE_SHIFT;
int i;
@@ -508,11 +509,12 @@ i915_gem_object_save_bit_17_swizzle(struct drm_i915_gem_object *obj)
}
}
- for_each_sg(obj->pages->sgl, sg, page_count, i) {
- struct page *page = sg_page(sg);
- if (page_to_phys(page) & (1 << 17))
+ i = 0;
+ for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) {
+ if (page_to_phys(sg_iter.page) & (1 << 17))
__set_bit(i, obj->bit_17);
else
__clear_bit(i, obj->bit_17);
+ i++;
}
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-28 14:50:42 +0000