#include <linux/slab.h>
#include <linux/swap.h>
#include <linux/pci.h>
-#include <linux/intel-gtt.h>
-
-static uint32_t i915_gem_get_gtt_alignment(struct drm_gem_object *obj);
-
-static int i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj);
-static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj);
-static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj);
-static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj,
- int write);
-static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj,
- uint64_t offset,
- uint64_t size);
-static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj);
-static int i915_gem_object_wait_rendering(struct drm_gem_object *obj,
- bool interruptible);
-static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj,
- unsigned alignment);
-static void i915_gem_clear_fence_reg(struct drm_gem_object *obj);
-static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj,
- struct drm_i915_gem_pwrite *args,
- struct drm_file *file_priv);
-static void i915_gem_free_object_tail(struct drm_gem_object *obj);
-static int
-i915_gem_object_get_pages(struct drm_gem_object *obj,
- gfp_t gfpmask);
+static __must_check int i915_gem_object_flush_gpu_write_domain(struct drm_i915_gem_object *obj);
+static void i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj);
+static void i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj);
+static __must_check int i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj,
+ bool write);
+static __must_check int i915_gem_object_set_cpu_read_domain_range(struct drm_i915_gem_object *obj,
+ uint64_t offset,
+ uint64_t size);
+static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_i915_gem_object *obj);
+static __must_check int i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj,
+ unsigned alignment,
+ bool map_and_fenceable);
+static void i915_gem_clear_fence_reg(struct drm_device *dev,
+ struct drm_i915_fence_reg *reg);
+static int i915_gem_phys_pwrite(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
+ struct drm_i915_gem_pwrite *args,
+ struct drm_file *file);
+static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj);
-static void
-i915_gem_object_put_pages(struct drm_gem_object *obj);
+static int i915_gem_inactive_shrink(struct shrinker *shrinker,
+ int nr_to_scan,
+ gfp_t gfp_mask);
-static LIST_HEAD(shrink_list);
-static DEFINE_SPINLOCK(shrink_list_lock);
/* some bookkeeping */
static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv,
dev_priv->mm.object_memory -= size;
}
-static void i915_gem_info_add_gtt(struct drm_i915_private *dev_priv,
- size_t size)
-{
- dev_priv->mm.gtt_count++;
- dev_priv->mm.gtt_memory += size;
-}
-
-static void i915_gem_info_remove_gtt(struct drm_i915_private *dev_priv,
- size_t size)
-{
- dev_priv->mm.gtt_count--;
- dev_priv->mm.gtt_memory -= size;
-}
-
-static void i915_gem_info_add_pin(struct drm_i915_private *dev_priv,
- size_t size)
-{
- dev_priv->mm.pin_count++;
- dev_priv->mm.pin_memory += size;
-}
-
-static void i915_gem_info_remove_pin(struct drm_i915_private *dev_priv,
- size_t size)
-{
- dev_priv->mm.pin_count--;
- dev_priv->mm.pin_memory -= size;
-}
-
int
i915_gem_check_is_wedged(struct drm_device *dev)
{
return -EIO;
}
-static int i915_mutex_lock_interruptible(struct drm_device *dev)
+int i915_mutex_lock_interruptible(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
}
static inline bool
-i915_gem_object_is_inactive(struct drm_i915_gem_object *obj_priv)
+i915_gem_object_is_inactive(struct drm_i915_gem_object *obj)
{
- return obj_priv->gtt_space &&
- !obj_priv->active &&
- obj_priv->pin_count == 0;
+ return obj->gtt_space && !obj->active && obj->pin_count == 0;
}
-int i915_gem_do_init(struct drm_device *dev,
- unsigned long start,
- unsigned long end)
+void i915_gem_do_init(struct drm_device *dev,
+ unsigned long start,
+ unsigned long mappable_end,
+ unsigned long end)
{
drm_i915_private_t *dev_priv = dev->dev_private;
- if (start >= end ||
- (start & (PAGE_SIZE - 1)) != 0 ||
- (end & (PAGE_SIZE - 1)) != 0) {
- return -EINVAL;
- }
-
- drm_mm_init(&dev_priv->mm.gtt_space, start,
- end - start);
+ drm_mm_init(&dev_priv->mm.gtt_space, start, end - start);
+ dev_priv->mm.gtt_start = start;
+ dev_priv->mm.gtt_mappable_end = mappable_end;
+ dev_priv->mm.gtt_end = end;
dev_priv->mm.gtt_total = end - start;
+ dev_priv->mm.mappable_gtt_total = min(end, mappable_end) - start;
- return 0;
+ /* Take over this portion of the GTT */
+ intel_gtt_clear_range(start / PAGE_SIZE, (end-start) / PAGE_SIZE);
}
int
i915_gem_init_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_gem_init *args = data;
- int ret;
+
+ if (args->gtt_start >= args->gtt_end ||
+ (args->gtt_end | args->gtt_start) & (PAGE_SIZE - 1))
+ return -EINVAL;
mutex_lock(&dev->struct_mutex);
- ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end);
+ i915_gem_do_init(dev, args->gtt_start, args->gtt_end, args->gtt_end);
mutex_unlock(&dev->struct_mutex);
- return ret;
+ return 0;
}
int
i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_get_aperture *args = data;
+ struct drm_i915_gem_object *obj;
+ size_t pinned;
if (!(dev->driver->driver_features & DRIVER_GEM))
return -ENODEV;
+ pinned = 0;
mutex_lock(&dev->struct_mutex);
- args->aper_size = dev_priv->mm.gtt_total;
- args->aper_available_size = args->aper_size - dev_priv->mm.pin_memory;
+ list_for_each_entry(obj, &dev_priv->mm.pinned_list, mm_list)
+ pinned += obj->gtt_space->size;
mutex_unlock(&dev->struct_mutex);
+ args->aper_size = dev_priv->mm.gtt_total;
+ args->aper_available_size = args->aper_size -pinned;
+
return 0;
}
-
/**
* Creates a new mm object and returns a handle to it.
*/
int
i915_gem_create_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_gem_create *args = data;
- struct drm_gem_object *obj;
+ struct drm_i915_gem_object *obj;
int ret;
u32 handle;
if (obj == NULL)
return -ENOMEM;
- ret = drm_gem_handle_create(file_priv, obj, &handle);
+ ret = drm_gem_handle_create(file, &obj->base, &handle);
if (ret) {
- drm_gem_object_release(obj);
- i915_gem_info_remove_obj(dev->dev_private, obj->size);
+ drm_gem_object_release(&obj->base);
+ i915_gem_info_remove_obj(dev->dev_private, obj->base.size);
kfree(obj);
return ret;
}
/* drop reference from allocate - handle holds it now */
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
trace_i915_gem_object_create(obj);
args->handle = handle;
return 0;
}
-static inline int
-fast_shmem_read(struct page **pages,
- loff_t page_base, int page_offset,
- char __user *data,
- int length)
-{
- char *vaddr;
- int ret;
-
- vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT]);
- ret = __copy_to_user_inatomic(data, vaddr + page_offset, length);
- kunmap_atomic(vaddr);
-
- return ret;
-}
-
-static int i915_gem_object_needs_bit17_swizzle(struct drm_gem_object *obj)
+static int i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj)
{
- drm_i915_private_t *dev_priv = obj->dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ drm_i915_private_t *dev_priv = obj->base.dev->dev_private;
return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 &&
- obj_priv->tiling_mode != I915_TILING_NONE;
+ obj->tiling_mode != I915_TILING_NONE;
}
static inline void
* fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow().
*/
static int
-i915_gem_shmem_pread_fast(struct drm_device *dev, struct drm_gem_object *obj,
+i915_gem_shmem_pread_fast(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
struct drm_i915_gem_pread *args,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping;
ssize_t remain;
- loff_t offset, page_base;
+ loff_t offset;
char __user *user_data;
int page_offset, page_length;
user_data = (char __user *) (uintptr_t) args->data_ptr;
remain = args->size;
- obj_priv = to_intel_bo(obj);
offset = args->offset;
while (remain > 0) {
+ struct page *page;
+ char *vaddr;
+ int ret;
+
/* Operation in this page
*
- * page_base = page offset within aperture
* page_offset = offset within page
* page_length = bytes to copy for this page
*/
- page_base = (offset & ~(PAGE_SIZE-1));
page_offset = offset & (PAGE_SIZE-1);
page_length = remain;
if ((page_offset + remain) > PAGE_SIZE)
page_length = PAGE_SIZE - page_offset;
- if (fast_shmem_read(obj_priv->pages,
- page_base, page_offset,
- user_data, page_length))
+ page = read_cache_page_gfp(mapping, offset >> PAGE_SHIFT,
+ GFP_HIGHUSER | __GFP_RECLAIMABLE);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
+
+ vaddr = kmap_atomic(page);
+ ret = __copy_to_user_inatomic(user_data,
+ vaddr + page_offset,
+ page_length);
+ kunmap_atomic(vaddr);
+
+ mark_page_accessed(page);
+ page_cache_release(page);
+ if (ret)
return -EFAULT;
remain -= page_length;
return 0;
}
-static int
-i915_gem_object_get_pages_or_evict(struct drm_gem_object *obj)
-{
- int ret;
-
- ret = i915_gem_object_get_pages(obj, __GFP_NORETRY | __GFP_NOWARN);
-
- /* If we've insufficient memory to map in the pages, attempt
- * to make some space by throwing out some old buffers.
- */
- if (ret == -ENOMEM) {
- struct drm_device *dev = obj->dev;
-
- ret = i915_gem_evict_something(dev, obj->size,
- i915_gem_get_gtt_alignment(obj));
- if (ret)
- return ret;
-
- ret = i915_gem_object_get_pages(obj, 0);
- }
-
- return ret;
-}
-
/**
* This is the fallback shmem pread path, which allocates temporary storage
* in kernel space to copy_to_user into outside of the struct_mutex, so we
* and not take page faults.
*/
static int
-i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj,
+i915_gem_shmem_pread_slow(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
struct drm_i915_gem_pread *args,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping;
struct mm_struct *mm = current->mm;
struct page **user_pages;
ssize_t remain;
loff_t offset, pinned_pages, i;
loff_t first_data_page, last_data_page, num_pages;
- int shmem_page_index, shmem_page_offset;
- int data_page_index, data_page_offset;
+ int shmem_page_offset;
+ int data_page_index, data_page_offset;
int page_length;
int ret;
uint64_t data_ptr = args->data_ptr;
do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj);
- obj_priv = to_intel_bo(obj);
offset = args->offset;
while (remain > 0) {
+ struct page *page;
+
/* Operation in this page
*
- * shmem_page_index = page number within shmem file
* shmem_page_offset = offset within page in shmem file
* data_page_index = page number in get_user_pages return
* data_page_offset = offset with data_page_index page.
* page_length = bytes to copy for this page
*/
- shmem_page_index = offset / PAGE_SIZE;
shmem_page_offset = offset & ~PAGE_MASK;
data_page_index = data_ptr / PAGE_SIZE - first_data_page;
data_page_offset = data_ptr & ~PAGE_MASK;
if ((data_page_offset + page_length) > PAGE_SIZE)
page_length = PAGE_SIZE - data_page_offset;
+ page = read_cache_page_gfp(mapping, offset >> PAGE_SHIFT,
+ GFP_HIGHUSER | __GFP_RECLAIMABLE);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
+
if (do_bit17_swizzling) {
- slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index],
+ slow_shmem_bit17_copy(page,
shmem_page_offset,
user_pages[data_page_index],
data_page_offset,
} else {
slow_shmem_copy(user_pages[data_page_index],
data_page_offset,
- obj_priv->pages[shmem_page_index],
+ page,
shmem_page_offset,
page_length);
}
+ mark_page_accessed(page);
+ page_cache_release(page);
+
remain -= page_length;
data_ptr += page_length;
offset += page_length;
out:
for (i = 0; i < pinned_pages; i++) {
SetPageDirty(user_pages[i]);
+ mark_page_accessed(user_pages[i]);
page_cache_release(user_pages[i]);
}
drm_free_large(user_pages);
*/
int
i915_gem_pread_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_gem_pread *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int ret = 0;
if (args->size == 0)
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
/* Bounds check source. */
- if (args->offset > obj->size || args->size > obj->size - args->offset) {
+ if (args->offset > obj->base.size ||
+ args->size > obj->base.size - args->offset) {
ret = -EINVAL;
goto out;
}
- ret = i915_gem_object_get_pages_or_evict(obj);
- if (ret)
- goto out;
-
ret = i915_gem_object_set_cpu_read_domain_range(obj,
args->offset,
args->size);
if (ret)
- goto out_put;
+ goto out;
ret = -EFAULT;
if (!i915_gem_object_needs_bit17_swizzle(obj))
- ret = i915_gem_shmem_pread_fast(dev, obj, args, file_priv);
+ ret = i915_gem_shmem_pread_fast(dev, obj, args, file);
if (ret == -EFAULT)
- ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv);
+ ret = i915_gem_shmem_pread_slow(dev, obj, args, file);
-out_put:
- i915_gem_object_put_pages(obj);
out:
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
io_mapping_unmap(dst_vaddr);
}
-static inline int
-fast_shmem_write(struct page **pages,
- loff_t page_base, int page_offset,
- char __user *data,
- int length)
-{
- char *vaddr;
- int ret;
-
- vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT]);
- ret = __copy_from_user_inatomic(vaddr + page_offset, data, length);
- kunmap_atomic(vaddr);
-
- return ret;
-}
-
/**
* This is the fast pwrite path, where we copy the data directly from the
* user into the GTT, uncached.
*/
static int
-i915_gem_gtt_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj,
+i915_gem_gtt_pwrite_fast(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
drm_i915_private_t *dev_priv = dev->dev_private;
ssize_t remain;
loff_t offset, page_base;
user_data = (char __user *) (uintptr_t) args->data_ptr;
remain = args->size;
- obj_priv = to_intel_bo(obj);
- offset = obj_priv->gtt_offset + args->offset;
+ offset = obj->gtt_offset + args->offset;
while (remain > 0) {
/* Operation in this page
* than using i915_gem_gtt_pwrite_fast on a G45 (32-bit).
*/
static int
-i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj,
+i915_gem_gtt_pwrite_slow(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
drm_i915_private_t *dev_priv = dev->dev_private;
ssize_t remain;
loff_t gtt_page_base, offset;
goto out_unpin_pages;
}
- ret = i915_gem_object_set_to_gtt_domain(obj, 1);
+ ret = i915_gem_object_set_to_gtt_domain(obj, true);
if (ret)
goto out_unpin_pages;
- obj_priv = to_intel_bo(obj);
- offset = obj_priv->gtt_offset + args->offset;
+ ret = i915_gem_object_put_fence(obj);
+ if (ret)
+ goto out_unpin_pages;
+
+ offset = obj->gtt_offset + args->offset;
while (remain > 0) {
/* Operation in this page
* copy_from_user into the kmapped pages backing the object.
*/
static int
-i915_gem_shmem_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj,
+i915_gem_shmem_pwrite_fast(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping;
ssize_t remain;
- loff_t offset, page_base;
+ loff_t offset;
char __user *user_data;
int page_offset, page_length;
user_data = (char __user *) (uintptr_t) args->data_ptr;
remain = args->size;
- obj_priv = to_intel_bo(obj);
offset = args->offset;
- obj_priv->dirty = 1;
+ obj->dirty = 1;
while (remain > 0) {
+ struct page *page;
+ char *vaddr;
+ int ret;
+
/* Operation in this page
*
- * page_base = page offset within aperture
* page_offset = offset within page
* page_length = bytes to copy for this page
*/
- page_base = (offset & ~(PAGE_SIZE-1));
page_offset = offset & (PAGE_SIZE-1);
page_length = remain;
if ((page_offset + remain) > PAGE_SIZE)
page_length = PAGE_SIZE - page_offset;
- if (fast_shmem_write(obj_priv->pages,
- page_base, page_offset,
- user_data, page_length))
+ page = read_cache_page_gfp(mapping, offset >> PAGE_SHIFT,
+ GFP_HIGHUSER | __GFP_RECLAIMABLE);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
+
+ vaddr = kmap_atomic(page, KM_USER0);
+ ret = __copy_from_user_inatomic(vaddr + page_offset,
+ user_data,
+ page_length);
+ kunmap_atomic(vaddr, KM_USER0);
+
+ set_page_dirty(page);
+ mark_page_accessed(page);
+ page_cache_release(page);
+
+ /* If we get a fault while copying data, then (presumably) our
+ * source page isn't available. Return the error and we'll
+ * retry in the slow path.
+ */
+ if (ret)
return -EFAULT;
remain -= page_length;
* struct_mutex is held.
*/
static int
-i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj,
+i915_gem_shmem_pwrite_slow(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping;
struct mm_struct *mm = current->mm;
struct page **user_pages;
ssize_t remain;
loff_t offset, pinned_pages, i;
loff_t first_data_page, last_data_page, num_pages;
- int shmem_page_index, shmem_page_offset;
+ int shmem_page_offset;
int data_page_index, data_page_offset;
int page_length;
int ret;
do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj);
- obj_priv = to_intel_bo(obj);
offset = args->offset;
- obj_priv->dirty = 1;
+ obj->dirty = 1;
while (remain > 0) {
+ struct page *page;
+
/* Operation in this page
*
- * shmem_page_index = page number within shmem file
* shmem_page_offset = offset within page in shmem file
* data_page_index = page number in get_user_pages return
* data_page_offset = offset with data_page_index page.
* page_length = bytes to copy for this page
*/
- shmem_page_index = offset / PAGE_SIZE;
shmem_page_offset = offset & ~PAGE_MASK;
data_page_index = data_ptr / PAGE_SIZE - first_data_page;
data_page_offset = data_ptr & ~PAGE_MASK;
if ((data_page_offset + page_length) > PAGE_SIZE)
page_length = PAGE_SIZE - data_page_offset;
+ page = read_cache_page_gfp(mapping, offset >> PAGE_SHIFT,
+ GFP_HIGHUSER | __GFP_RECLAIMABLE);
+ if (IS_ERR(page)) {
+ ret = PTR_ERR(page);
+ goto out;
+ }
+
if (do_bit17_swizzling) {
- slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index],
+ slow_shmem_bit17_copy(page,
shmem_page_offset,
user_pages[data_page_index],
data_page_offset,
page_length,
0);
} else {
- slow_shmem_copy(obj_priv->pages[shmem_page_index],
+ slow_shmem_copy(page,
shmem_page_offset,
user_pages[data_page_index],
data_page_offset,
page_length);
}
+ set_page_dirty(page);
+ mark_page_accessed(page);
+ page_cache_release(page);
+
remain -= page_length;
data_ptr += page_length;
offset += page_length;
struct drm_file *file)
{
struct drm_i915_gem_pwrite *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int ret;
if (args->size == 0)
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
/* Bounds check destination. */
- if (args->offset > obj->size || args->size > obj->size - args->offset) {
+ if (args->offset > obj->base.size ||
+ args->size > obj->base.size - args->offset) {
ret = -EINVAL;
goto out;
}
* pread/pwrite currently are reading and writing from the CPU
* perspective, requiring manual detiling by the client.
*/
- if (obj_priv->phys_obj)
+ if (obj->phys_obj)
ret = i915_gem_phys_pwrite(dev, obj, args, file);
- else if (obj_priv->tiling_mode == I915_TILING_NONE &&
- obj_priv->gtt_space &&
- obj->write_domain != I915_GEM_DOMAIN_CPU) {
- ret = i915_gem_object_pin(obj, 0);
+ else if (obj->gtt_space &&
+ obj->base.write_domain != I915_GEM_DOMAIN_CPU) {
+ ret = i915_gem_object_pin(obj, 0, true);
if (ret)
goto out;
- ret = i915_gem_object_set_to_gtt_domain(obj, 1);
+ ret = i915_gem_object_set_to_gtt_domain(obj, true);
+ if (ret)
+ goto out_unpin;
+
+ ret = i915_gem_object_put_fence(obj);
if (ret)
goto out_unpin;
out_unpin:
i915_gem_object_unpin(obj);
} else {
- ret = i915_gem_object_get_pages_or_evict(obj);
- if (ret)
- goto out;
-
ret = i915_gem_object_set_to_cpu_domain(obj, 1);
if (ret)
- goto out_put;
+ goto out;
ret = -EFAULT;
if (!i915_gem_object_needs_bit17_swizzle(obj))
ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file);
if (ret == -EFAULT)
ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file);
-
-out_put:
- i915_gem_object_put_pages(obj);
}
out:
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
*/
int
i915_gem_set_domain_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
- struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_set_domain *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
uint32_t read_domains = args->read_domains;
uint32_t write_domain = args->write_domain;
int ret;
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
-
- intel_mark_busy(dev, obj);
if (read_domains & I915_GEM_DOMAIN_GTT) {
ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0);
- /* Update the LRU on the fence for the CPU access that's
- * about to occur.
- */
- if (obj_priv->fence_reg != I915_FENCE_REG_NONE) {
- struct drm_i915_fence_reg *reg =
- &dev_priv->fence_regs[obj_priv->fence_reg];
- list_move_tail(®->lru_list,
- &dev_priv->mm.fence_list);
- }
-
/* Silently promote "you're not bound, there was nothing to do"
* to success, since the client was just asking us to
* make sure everything was done.
ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0);
}
- /* Maintain LRU order of "inactive" objects */
- if (ret == 0 && i915_gem_object_is_inactive(obj_priv))
- list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
-
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
*/
int
i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_gem_sw_finish *args = data;
- struct drm_gem_object *obj;
+ struct drm_i915_gem_object *obj;
int ret = 0;
if (!(dev->driver->driver_features & DRIVER_GEM))
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
/* Pinned buffers may be scanout, so flush the cache */
- if (to_intel_bo(obj)->pin_count)
+ if (obj->pin_count)
i915_gem_object_flush_cpu_write_domain(obj);
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
*/
int
i915_gem_mmap_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_mmap *args = data;
struct drm_gem_object *obj;
loff_t offset;
if (!(dev->driver->driver_features & DRIVER_GEM))
return -ENODEV;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = drm_gem_object_lookup(dev, file, args->handle);
if (obj == NULL)
return -ENOENT;
+ if (obj->size > dev_priv->mm.gtt_mappable_end) {
+ drm_gem_object_unreference_unlocked(obj);
+ return -E2BIG;
+ }
+
offset = args->offset;
down_write(¤t->mm->mmap_sem);
*/
int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
- struct drm_gem_object *obj = vma->vm_private_data;
- struct drm_device *dev = obj->dev;
+ struct drm_i915_gem_object *obj = to_intel_bo(vma->vm_private_data);
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
pgoff_t page_offset;
unsigned long pfn;
int ret = 0;
/* Now bind it into the GTT if needed */
mutex_lock(&dev->struct_mutex);
- if (!obj_priv->gtt_space) {
- ret = i915_gem_object_bind_to_gtt(obj, 0);
- if (ret)
- goto unlock;
- ret = i915_gem_object_set_to_gtt_domain(obj, write);
+ if (!obj->map_and_fenceable) {
+ ret = i915_gem_object_unbind(obj);
if (ret)
goto unlock;
}
-
- /* Need a new fence register? */
- if (obj_priv->tiling_mode != I915_TILING_NONE) {
- ret = i915_gem_object_get_fence_reg(obj, true);
+ if (!obj->gtt_space) {
+ ret = i915_gem_object_bind_to_gtt(obj, 0, true);
if (ret)
goto unlock;
}
- if (i915_gem_object_is_inactive(obj_priv))
- list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
+ ret = i915_gem_object_set_to_gtt_domain(obj, write);
+ if (ret)
+ goto unlock;
+
+ if (obj->tiling_mode == I915_TILING_NONE)
+ ret = i915_gem_object_put_fence(obj);
+ else
+ ret = i915_gem_object_get_fence(obj, NULL, true);
+ if (ret)
+ goto unlock;
+
+ if (i915_gem_object_is_inactive(obj))
+ list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
+
+ obj->fault_mappable = true;
- pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) +
+ pfn = ((dev->agp->base + obj->gtt_offset) >> PAGE_SHIFT) +
page_offset;
/* Finally, remap it using the new GTT offset */
mutex_unlock(&dev->struct_mutex);
switch (ret) {
+ case -EAGAIN:
+ set_need_resched();
case 0:
case -ERESTARTSYS:
return VM_FAULT_NOPAGE;
case -ENOMEM:
- case -EAGAIN:
return VM_FAULT_OOM;
default:
return VM_FAULT_SIGBUS;
* This routine allocates and attaches a fake offset for @obj.
*/
static int
-i915_gem_create_mmap_offset(struct drm_gem_object *obj)
+i915_gem_create_mmap_offset(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
struct drm_gem_mm *mm = dev->mm_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
struct drm_map_list *list;
struct drm_local_map *map;
int ret = 0;
/* Set the object up for mmap'ing */
- list = &obj->map_list;
+ list = &obj->base.map_list;
list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL);
if (!list->map)
return -ENOMEM;
map = list->map;
map->type = _DRM_GEM;
- map->size = obj->size;
+ map->size = obj->base.size;
map->handle = obj;
/* Get a DRM GEM mmap offset allocated... */
list->file_offset_node = drm_mm_search_free(&mm->offset_manager,
- obj->size / PAGE_SIZE, 0, 0);
+ obj->base.size / PAGE_SIZE,
+ 0, 0);
if (!list->file_offset_node) {
- DRM_ERROR("failed to allocate offset for bo %d\n", obj->name);
+ DRM_ERROR("failed to allocate offset for bo %d\n",
+ obj->base.name);
ret = -ENOSPC;
goto out_free_list;
}
list->file_offset_node = drm_mm_get_block(list->file_offset_node,
- obj->size / PAGE_SIZE, 0);
+ obj->base.size / PAGE_SIZE,
+ 0);
if (!list->file_offset_node) {
ret = -ENOMEM;
goto out_free_list;
goto out_free_mm;
}
- /* By now we should be all set, any drm_mmap request on the offset
- * below will get to our mmap & fault handler */
- obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT;
-
return 0;
out_free_mm:
drm_mm_put_block(list->file_offset_node);
out_free_list:
kfree(list->map);
+ list->map = NULL;
return ret;
}
* fixup by i915_gem_fault().
*/
void
-i915_gem_release_mmap(struct drm_gem_object *obj)
+i915_gem_release_mmap(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ if (!obj->fault_mappable)
+ return;
+
+ unmap_mapping_range(obj->base.dev->dev_mapping,
+ (loff_t)obj->base.map_list.hash.key<<PAGE_SHIFT,
+ obj->base.size, 1);
- if (dev->dev_mapping)
- unmap_mapping_range(dev->dev_mapping,
- obj_priv->mmap_offset, obj->size, 1);
+ obj->fault_mappable = false;
}
static void
-i915_gem_free_mmap_offset(struct drm_gem_object *obj)
+i915_gem_free_mmap_offset(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ struct drm_device *dev = obj->base.dev;
struct drm_gem_mm *mm = dev->mm_private;
- struct drm_map_list *list;
+ struct drm_map_list *list = &obj->base.map_list;
- list = &obj->map_list;
drm_ht_remove_item(&mm->offset_hash, &list->hash);
+ drm_mm_put_block(list->file_offset_node);
+ kfree(list->map);
+ list->map = NULL;
+}
- if (list->file_offset_node) {
- drm_mm_put_block(list->file_offset_node);
- list->file_offset_node = NULL;
- }
+static uint32_t
+i915_gem_get_gtt_size(struct drm_i915_gem_object *obj)
+{
+ struct drm_device *dev = obj->base.dev;
+ uint32_t size;
- if (list->map) {
- kfree(list->map);
- list->map = NULL;
- }
+ if (INTEL_INFO(dev)->gen >= 4 ||
+ obj->tiling_mode == I915_TILING_NONE)
+ return obj->base.size;
+
+ /* Previous chips need a power-of-two fence region when tiling */
+ if (INTEL_INFO(dev)->gen == 3)
+ size = 1024*1024;
+ else
+ size = 512*1024;
+
+ while (size < obj->base.size)
+ size <<= 1;
- obj_priv->mmap_offset = 0;
+ return size;
}
/**
* @obj: object to check
*
* Return the required GTT alignment for an object, taking into account
- * potential fence register mapping if needed.
+ * potential fence register mapping.
*/
static uint32_t
-i915_gem_get_gtt_alignment(struct drm_gem_object *obj)
+i915_gem_get_gtt_alignment(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- int start, i;
+ struct drm_device *dev = obj->base.dev;
/*
* Minimum alignment is 4k (GTT page size), but might be greater
* if a fence register is needed for the object.
*/
- if (INTEL_INFO(dev)->gen >= 4 || obj_priv->tiling_mode == I915_TILING_NONE)
+ if (INTEL_INFO(dev)->gen >= 4 ||
+ obj->tiling_mode == I915_TILING_NONE)
return 4096;
/*
* Previous chips need to be aligned to the size of the smallest
* fence register that can contain the object.
*/
- if (INTEL_INFO(dev)->gen == 3)
- start = 1024*1024;
- else
- start = 512*1024;
+ return i915_gem_get_gtt_size(obj);
+}
+
+/**
+ * i915_gem_get_unfenced_gtt_alignment - return required GTT alignment for an
+ * unfenced object
+ * @obj: object to check
+ *
+ * Return the required GTT alignment for an object, only taking into account
+ * unfenced tiled surface requirements.
+ */
+uint32_t
+i915_gem_get_unfenced_gtt_alignment(struct drm_i915_gem_object *obj)
+{
+ struct drm_device *dev = obj->base.dev;
+ int tile_height;
+
+ /*
+ * Minimum alignment is 4k (GTT page size) for sane hw.
+ */
+ if (INTEL_INFO(dev)->gen >= 4 || IS_G33(dev) ||
+ obj->tiling_mode == I915_TILING_NONE)
+ return 4096;
- for (i = start; i < obj->size; i <<= 1)
- ;
+ /*
+ * Older chips need unfenced tiled buffers to be aligned to the left
+ * edge of an even tile row (where tile rows are counted as if the bo is
+ * placed in a fenced gtt region).
+ */
+ if (IS_GEN2(dev) ||
+ (obj->tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev)))
+ tile_height = 32;
+ else
+ tile_height = 8;
- return i;
+ return tile_height * obj->stride * 2;
}
/**
* i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing
* @dev: DRM device
* @data: GTT mapping ioctl data
- * @file_priv: GEM object info
+ * @file: GEM object info
*
* Simply returns the fake offset to userspace so it can mmap it.
* The mmap call will end up in drm_gem_mmap(), which will set things
*/
int
i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_mmap_gtt *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int ret;
if (!(dev->driver->driver_features & DRIVER_GEM))
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
- if (obj_priv->madv != I915_MADV_WILLNEED) {
+ if (obj->base.size > dev_priv->mm.gtt_mappable_end) {
+ ret = -E2BIG;
+ goto unlock;
+ }
+
+ if (obj->madv != I915_MADV_WILLNEED) {
DRM_ERROR("Attempting to mmap a purgeable buffer\n");
ret = -EINVAL;
goto out;
}
- if (!obj_priv->mmap_offset) {
+ if (!obj->base.map_list.map) {
ret = i915_gem_create_mmap_offset(obj);
if (ret)
goto out;
}
- args->offset = obj_priv->mmap_offset;
-
- /*
- * Pull it into the GTT so that we have a page list (makes the
- * initial fault faster and any subsequent flushing possible).
- */
- if (!obj_priv->agp_mem) {
- ret = i915_gem_object_bind_to_gtt(obj, 0);
- if (ret)
- goto out;
- }
+ args->offset = (u64)obj->base.map_list.hash.key << PAGE_SHIFT;
out:
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
}
+static int
+i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj,
+ gfp_t gfpmask)
+{
+ int page_count, i;
+ struct address_space *mapping;
+ struct inode *inode;
+ struct page *page;
+
+ /* Get the list of pages out of our struct file. They'll be pinned
+ * at this point until we release them.
+ */
+ page_count = obj->base.size / PAGE_SIZE;
+ BUG_ON(obj->pages != NULL);
+ obj->pages = drm_malloc_ab(page_count, sizeof(struct page *));
+ if (obj->pages == NULL)
+ return -ENOMEM;
+
+ inode = obj->base.filp->f_path.dentry->d_inode;
+ mapping = inode->i_mapping;
+ for (i = 0; i < page_count; i++) {
+ page = read_cache_page_gfp(mapping, i,
+ GFP_HIGHUSER |
+ __GFP_COLD |
+ __GFP_RECLAIMABLE |
+ gfpmask);
+ if (IS_ERR(page))
+ goto err_pages;
+
+ obj->pages[i] = page;
+ }
+
+ if (obj->tiling_mode != I915_TILING_NONE)
+ i915_gem_object_do_bit_17_swizzle(obj);
+
+ return 0;
+
+err_pages:
+ while (i--)
+ page_cache_release(obj->pages[i]);
+
+ drm_free_large(obj->pages);
+ obj->pages = NULL;
+ return PTR_ERR(page);
+}
+
static void
-i915_gem_object_put_pages(struct drm_gem_object *obj)
+i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- int page_count = obj->size / PAGE_SIZE;
+ int page_count = obj->base.size / PAGE_SIZE;
int i;
- BUG_ON(obj_priv->pages_refcount == 0);
- BUG_ON(obj_priv->madv == __I915_MADV_PURGED);
+ BUG_ON(obj->madv == __I915_MADV_PURGED);
- if (--obj_priv->pages_refcount != 0)
- return;
-
- if (obj_priv->tiling_mode != I915_TILING_NONE)
+ if (obj->tiling_mode != I915_TILING_NONE)
i915_gem_object_save_bit_17_swizzle(obj);
- if (obj_priv->madv == I915_MADV_DONTNEED)
- obj_priv->dirty = 0;
+ if (obj->madv == I915_MADV_DONTNEED)
+ obj->dirty = 0;
for (i = 0; i < page_count; i++) {
- if (obj_priv->dirty)
- set_page_dirty(obj_priv->pages[i]);
+ if (obj->dirty)
+ set_page_dirty(obj->pages[i]);
- if (obj_priv->madv == I915_MADV_WILLNEED)
- mark_page_accessed(obj_priv->pages[i]);
+ if (obj->madv == I915_MADV_WILLNEED)
+ mark_page_accessed(obj->pages[i]);
- page_cache_release(obj_priv->pages[i]);
+ page_cache_release(obj->pages[i]);
}
- obj_priv->dirty = 0;
-
- drm_free_large(obj_priv->pages);
- obj_priv->pages = NULL;
-}
+ obj->dirty = 0;
-static uint32_t
-i915_gem_next_request_seqno(struct drm_device *dev,
- struct intel_ring_buffer *ring)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
-
- ring->outstanding_lazy_request = true;
- return dev_priv->next_seqno;
+ drm_free_large(obj->pages);
+ obj->pages = NULL;
}
-static void
-i915_gem_object_move_to_active(struct drm_gem_object *obj,
- struct intel_ring_buffer *ring)
+void
+i915_gem_object_move_to_active(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *ring,
+ u32 seqno)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- uint32_t seqno = i915_gem_next_request_seqno(dev, ring);
BUG_ON(ring == NULL);
- obj_priv->ring = ring;
+ obj->ring = ring;
/* Add a reference if we're newly entering the active list. */
- if (!obj_priv->active) {
- drm_gem_object_reference(obj);
- obj_priv->active = 1;
+ if (!obj->active) {
+ drm_gem_object_reference(&obj->base);
+ obj->active = 1;
}
/* Move from whatever list we were on to the tail of execution. */
- list_move_tail(&obj_priv->mm_list, &dev_priv->mm.active_list);
- list_move_tail(&obj_priv->ring_list, &ring->active_list);
- obj_priv->last_rendering_seqno = seqno;
+ list_move_tail(&obj->mm_list, &dev_priv->mm.active_list);
+ list_move_tail(&obj->ring_list, &ring->active_list);
+
+ obj->last_rendering_seqno = seqno;
+ if (obj->fenced_gpu_access) {
+ struct drm_i915_fence_reg *reg;
+
+ BUG_ON(obj->fence_reg == I915_FENCE_REG_NONE);
+
+ obj->last_fenced_seqno = seqno;
+ obj->last_fenced_ring = ring;
+
+ reg = &dev_priv->fence_regs[obj->fence_reg];
+ list_move_tail(®->lru_list, &dev_priv->mm.fence_list);
+ }
+}
+
+static void
+i915_gem_object_move_off_active(struct drm_i915_gem_object *obj)
+{
+ list_del_init(&obj->ring_list);
+ obj->last_rendering_seqno = 0;
}
static void
-i915_gem_object_move_to_flushing(struct drm_gem_object *obj)
+i915_gem_object_move_to_flushing(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- BUG_ON(!obj_priv->active);
- list_move_tail(&obj_priv->mm_list, &dev_priv->mm.flushing_list);
- list_del_init(&obj_priv->ring_list);
- obj_priv->last_rendering_seqno = 0;
+ BUG_ON(!obj->active);
+ list_move_tail(&obj->mm_list, &dev_priv->mm.flushing_list);
+
+ i915_gem_object_move_off_active(obj);
+}
+
+static void
+i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj)
+{
+ struct drm_device *dev = obj->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ if (obj->pin_count != 0)
+ list_move_tail(&obj->mm_list, &dev_priv->mm.pinned_list);
+ else
+ list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
+
+ BUG_ON(!list_empty(&obj->gpu_write_list));
+ BUG_ON(!obj->active);
+ obj->ring = NULL;
+
+ i915_gem_object_move_off_active(obj);
+ obj->fenced_gpu_access = false;
+
+ obj->active = 0;
+ obj->pending_gpu_write = false;
+ drm_gem_object_unreference(&obj->base);
+
+ WARN_ON(i915_verify_lists(dev));
}
/* Immediately discard the backing storage */
static void
-i915_gem_object_truncate(struct drm_gem_object *obj)
+i915_gem_object_truncate(struct drm_i915_gem_object *obj)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
struct inode *inode;
/* Our goal here is to return as much of the memory as
* backing pages, *now*. Here we mirror the actions taken
* when by shmem_delete_inode() to release the backing store.
*/
- inode = obj->filp->f_path.dentry->d_inode;
+ inode = obj->base.filp->f_path.dentry->d_inode;
truncate_inode_pages(inode->i_mapping, 0);
if (inode->i_op->truncate_range)
inode->i_op->truncate_range(inode, 0, (loff_t)-1);
- obj_priv->madv = __I915_MADV_PURGED;
+ obj->madv = __I915_MADV_PURGED;
}
static inline int
-i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv)
-{
- return obj_priv->madv == I915_MADV_DONTNEED;
-}
-
-static void
-i915_gem_object_move_to_inactive(struct drm_gem_object *obj)
+i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
-
- if (obj_priv->pin_count != 0)
- list_move_tail(&obj_priv->mm_list, &dev_priv->mm.pinned_list);
- else
- list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
- list_del_init(&obj_priv->ring_list);
-
- BUG_ON(!list_empty(&obj_priv->gpu_write_list));
-
- obj_priv->last_rendering_seqno = 0;
- obj_priv->ring = NULL;
- if (obj_priv->active) {
- obj_priv->active = 0;
- drm_gem_object_unreference(obj);
- }
- WARN_ON(i915_verify_lists(dev));
+ return obj->madv == I915_MADV_DONTNEED;
}
static void
uint32_t flush_domains,
struct intel_ring_buffer *ring)
{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv, *next;
+ struct drm_i915_gem_object *obj, *next;
- list_for_each_entry_safe(obj_priv, next,
+ list_for_each_entry_safe(obj, next,
&ring->gpu_write_list,
gpu_write_list) {
- struct drm_gem_object *obj = &obj_priv->base;
-
- if (obj->write_domain & flush_domains) {
- uint32_t old_write_domain = obj->write_domain;
-
- obj->write_domain = 0;
- list_del_init(&obj_priv->gpu_write_list);
- i915_gem_object_move_to_active(obj, ring);
+ if (obj->base.write_domain & flush_domains) {
+ uint32_t old_write_domain = obj->base.write_domain;
- /* update the fence lru list */
- if (obj_priv->fence_reg != I915_FENCE_REG_NONE) {
- struct drm_i915_fence_reg *reg =
- &dev_priv->fence_regs[obj_priv->fence_reg];
- list_move_tail(®->lru_list,
- &dev_priv->mm.fence_list);
- }
+ obj->base.write_domain = 0;
+ list_del_init(&obj->gpu_write_list);
+ i915_gem_object_move_to_active(obj, ring,
+ i915_gem_next_request_seqno(dev, ring));
trace_i915_gem_object_change_domain(obj,
- obj->read_domains,
+ obj->base.read_domains,
old_write_domain);
}
}
}
-uint32_t
+int
i915_add_request(struct drm_device *dev,
struct drm_file *file,
struct drm_i915_gem_request *request,
struct drm_i915_file_private *file_priv = NULL;
uint32_t seqno;
int was_empty;
+ int ret;
+
+ BUG_ON(request == NULL);
if (file != NULL)
file_priv = file->driver_priv;
- if (request == NULL) {
- request = kzalloc(sizeof(*request), GFP_KERNEL);
- if (request == NULL)
- return 0;
- }
+ ret = ring->add_request(ring, &seqno);
+ if (ret)
+ return ret;
- seqno = ring->add_request(dev, ring, 0);
ring->outstanding_lazy_request = false;
request->seqno = seqno;
queue_delayed_work(dev_priv->wq,
&dev_priv->mm.retire_work, HZ);
}
- return seqno;
-}
-
-/**
- * Command execution barrier
- *
- * Ensures that all commands in the ring are finished
- * before signalling the CPU
- */
-static void
-i915_retire_commands(struct drm_device *dev, struct intel_ring_buffer *ring)
-{
- uint32_t flush_domains = 0;
-
- /* The sampler always gets flushed on i965 (sigh) */
- if (INTEL_INFO(dev)->gen >= 4)
- flush_domains |= I915_GEM_DOMAIN_SAMPLER;
-
- ring->flush(dev, ring,
- I915_GEM_DOMAIN_COMMAND, flush_domains);
+ return 0;
}
static inline void
}
while (!list_empty(&ring->active_list)) {
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
+
+ obj = list_first_entry(&ring->active_list,
+ struct drm_i915_gem_object,
+ ring_list);
+
+ obj->base.write_domain = 0;
+ list_del_init(&obj->gpu_write_list);
+ i915_gem_object_move_to_inactive(obj);
+ }
+}
- obj_priv = list_first_entry(&ring->active_list,
- struct drm_i915_gem_object,
- ring_list);
+static void i915_gem_reset_fences(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int i;
+
+ for (i = 0; i < 16; i++) {
+ struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i];
+ struct drm_i915_gem_object *obj = reg->obj;
+
+ if (!obj)
+ continue;
+
+ if (obj->tiling_mode)
+ i915_gem_release_mmap(obj);
- obj_priv->base.write_domain = 0;
- list_del_init(&obj_priv->gpu_write_list);
- i915_gem_object_move_to_inactive(&obj_priv->base);
+ reg->obj->fence_reg = I915_FENCE_REG_NONE;
+ reg->obj->fenced_gpu_access = false;
+ reg->obj->last_fenced_seqno = 0;
+ reg->obj->last_fenced_ring = NULL;
+ i915_gem_clear_fence_reg(dev, reg);
}
}
void i915_gem_reset(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int i;
- i915_gem_reset_ring_lists(dev_priv, &dev_priv->render_ring);
- i915_gem_reset_ring_lists(dev_priv, &dev_priv->bsd_ring);
- i915_gem_reset_ring_lists(dev_priv, &dev_priv->blt_ring);
+ for (i = 0; i < I915_NUM_RINGS; i++)
+ i915_gem_reset_ring_lists(dev_priv, &dev_priv->ring[i]);
/* Remove anything from the flushing lists. The GPU cache is likely
* to be lost on reset along with the data, so simply move the
* lost bo to the inactive list.
*/
while (!list_empty(&dev_priv->mm.flushing_list)) {
- obj_priv = list_first_entry(&dev_priv->mm.flushing_list,
- struct drm_i915_gem_object,
- mm_list);
+ obj= list_first_entry(&dev_priv->mm.flushing_list,
+ struct drm_i915_gem_object,
+ mm_list);
- obj_priv->base.write_domain = 0;
- list_del_init(&obj_priv->gpu_write_list);
- i915_gem_object_move_to_inactive(&obj_priv->base);
+ obj->base.write_domain = 0;
+ list_del_init(&obj->gpu_write_list);
+ i915_gem_object_move_to_inactive(obj);
}
/* Move everything out of the GPU domains to ensure we do any
* necessary invalidation upon reuse.
*/
- list_for_each_entry(obj_priv,
+ list_for_each_entry(obj,
&dev_priv->mm.inactive_list,
mm_list)
{
- obj_priv->base.read_domains &= ~I915_GEM_GPU_DOMAINS;
+ obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS;
}
/* The fence registers are invalidated so clear them out */
- for (i = 0; i < 16; i++) {
- struct drm_i915_fence_reg *reg;
-
- reg = &dev_priv->fence_regs[i];
- if (!reg->obj)
- continue;
-
- i915_gem_clear_fence_reg(reg->obj);
- }
+ i915_gem_reset_fences(dev);
}
/**
{
drm_i915_private_t *dev_priv = dev->dev_private;
uint32_t seqno;
+ int i;
if (!ring->status_page.page_addr ||
list_empty(&ring->request_list))
WARN_ON(i915_verify_lists(dev));
- seqno = ring->get_seqno(dev, ring);
+ seqno = ring->get_seqno(ring);
+
+ for (i = 0; i < ARRAY_SIZE(ring->sync_seqno); i++)
+ if (seqno >= ring->sync_seqno[i])
+ ring->sync_seqno[i] = 0;
+
while (!list_empty(&ring->request_list)) {
struct drm_i915_gem_request *request;
* by the ringbuffer to the flushing/inactive lists as appropriate.
*/
while (!list_empty(&ring->active_list)) {
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
- obj_priv = list_first_entry(&ring->active_list,
- struct drm_i915_gem_object,
- ring_list);
+ obj= list_first_entry(&ring->active_list,
+ struct drm_i915_gem_object,
+ ring_list);
- if (!i915_seqno_passed(seqno, obj_priv->last_rendering_seqno))
+ if (!i915_seqno_passed(seqno, obj->last_rendering_seqno))
break;
- obj = &obj_priv->base;
- if (obj->write_domain != 0)
+ if (obj->base.write_domain != 0)
i915_gem_object_move_to_flushing(obj);
else
i915_gem_object_move_to_inactive(obj);
if (unlikely (dev_priv->trace_irq_seqno &&
i915_seqno_passed(dev_priv->trace_irq_seqno, seqno))) {
- ring->user_irq_put(dev, ring);
+ ring->irq_put(ring);
dev_priv->trace_irq_seqno = 0;
}
i915_gem_retire_requests(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
+ int i;
if (!list_empty(&dev_priv->mm.deferred_free_list)) {
- struct drm_i915_gem_object *obj_priv, *tmp;
+ struct drm_i915_gem_object *obj, *next;
/* We must be careful that during unbind() we do not
* accidentally infinitely recurse into retire requests.
* Currently:
* retire -> free -> unbind -> wait -> retire_ring
*/
- list_for_each_entry_safe(obj_priv, tmp,
+ list_for_each_entry_safe(obj, next,
&dev_priv->mm.deferred_free_list,
mm_list)
- i915_gem_free_object_tail(&obj_priv->base);
+ i915_gem_free_object_tail(obj);
}
- i915_gem_retire_requests_ring(dev, &dev_priv->render_ring);
- i915_gem_retire_requests_ring(dev, &dev_priv->bsd_ring);
- i915_gem_retire_requests_ring(dev, &dev_priv->blt_ring);
+ for (i = 0; i < I915_NUM_RINGS; i++)
+ i915_gem_retire_requests_ring(dev, &dev_priv->ring[i]);
}
static void
{
drm_i915_private_t *dev_priv;
struct drm_device *dev;
+ bool idle;
+ int i;
dev_priv = container_of(work, drm_i915_private_t,
mm.retire_work.work);
i915_gem_retire_requests(dev);
- if (!dev_priv->mm.suspended &&
- (!list_empty(&dev_priv->render_ring.request_list) ||
- !list_empty(&dev_priv->bsd_ring.request_list) ||
- !list_empty(&dev_priv->blt_ring.request_list)))
+ /* Send a periodic flush down the ring so we don't hold onto GEM
+ * objects indefinitely.
+ */
+ idle = true;
+ for (i = 0; i < I915_NUM_RINGS; i++) {
+ struct intel_ring_buffer *ring = &dev_priv->ring[i];
+
+ if (!list_empty(&ring->gpu_write_list)) {
+ struct drm_i915_gem_request *request;
+ int ret;
+
+ ret = i915_gem_flush_ring(dev, ring, 0,
+ I915_GEM_GPU_DOMAINS);
+ request = kzalloc(sizeof(*request), GFP_KERNEL);
+ if (ret || request == NULL ||
+ i915_add_request(dev, NULL, request, ring))
+ kfree(request);
+ }
+
+ idle &= list_empty(&ring->request_list);
+ }
+
+ if (!dev_priv->mm.suspended && !idle)
queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ);
+
mutex_unlock(&dev->struct_mutex);
}
if (atomic_read(&dev_priv->mm.wedged))
return -EAGAIN;
- if (ring->outstanding_lazy_request) {
- seqno = i915_add_request(dev, NULL, NULL, ring);
- if (seqno == 0)
+ if (seqno == ring->outstanding_lazy_request) {
+ struct drm_i915_gem_request *request;
+
+ request = kzalloc(sizeof(*request), GFP_KERNEL);
+ if (request == NULL)
return -ENOMEM;
+
+ ret = i915_add_request(dev, NULL, request, ring);
+ if (ret) {
+ kfree(request);
+ return ret;
+ }
+
+ seqno = request->seqno;
}
- BUG_ON(seqno == dev_priv->next_seqno);
- if (!i915_seqno_passed(ring->get_seqno(dev, ring), seqno)) {
+ if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) {
if (HAS_PCH_SPLIT(dev))
ier = I915_READ(DEIER) | I915_READ(GTIER);
else
trace_i915_gem_request_wait_begin(dev, seqno);
- ring->waiting_gem_seqno = seqno;
- ring->user_irq_get(dev, ring);
- if (interruptible)
- ret = wait_event_interruptible(ring->irq_queue,
- i915_seqno_passed(
- ring->get_seqno(dev, ring), seqno)
- || atomic_read(&dev_priv->mm.wedged));
- else
- wait_event(ring->irq_queue,
- i915_seqno_passed(
- ring->get_seqno(dev, ring), seqno)
- || atomic_read(&dev_priv->mm.wedged));
+ ring->waiting_seqno = seqno;
+ if (ring->irq_get(ring)) {
+ if (interruptible)
+ ret = wait_event_interruptible(ring->irq_queue,
+ i915_seqno_passed(ring->get_seqno(ring), seqno)
+ || atomic_read(&dev_priv->mm.wedged));
+ else
+ wait_event(ring->irq_queue,
+ i915_seqno_passed(ring->get_seqno(ring), seqno)
+ || atomic_read(&dev_priv->mm.wedged));
- ring->user_irq_put(dev, ring);
- ring->waiting_gem_seqno = 0;
+ ring->irq_put(ring);
+ } else if (wait_for(i915_seqno_passed(ring->get_seqno(ring),
+ seqno) ||
+ atomic_read(&dev_priv->mm.wedged), 3000))
+ ret = -EBUSY;
+ ring->waiting_seqno = 0;
trace_i915_gem_request_wait_end(dev, seqno);
}
if (ret && ret != -ERESTARTSYS)
DRM_ERROR("%s returns %d (awaiting %d at %d, next %d)\n",
- __func__, ret, seqno, ring->get_seqno(dev, ring),
+ __func__, ret, seqno, ring->get_seqno(ring),
dev_priv->next_seqno);
/* Directly dispatch request retiring. While we have the work queue
return i915_do_wait_request(dev, seqno, 1, ring);
}
-static void
-i915_gem_flush_ring(struct drm_device *dev,
- struct drm_file *file_priv,
- struct intel_ring_buffer *ring,
- uint32_t invalidate_domains,
- uint32_t flush_domains)
-{
- ring->flush(dev, ring, invalidate_domains, flush_domains);
- i915_gem_process_flushing_list(dev, flush_domains, ring);
-}
-
-static void
-i915_gem_flush(struct drm_device *dev,
- struct drm_file *file_priv,
- uint32_t invalidate_domains,
- uint32_t flush_domains,
- uint32_t flush_rings)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
-
- if (flush_domains & I915_GEM_DOMAIN_CPU)
- drm_agp_chipset_flush(dev);
-
- if ((flush_domains | invalidate_domains) & I915_GEM_GPU_DOMAINS) {
- if (flush_rings & RING_RENDER)
- i915_gem_flush_ring(dev, file_priv,
- &dev_priv->render_ring,
- invalidate_domains, flush_domains);
- if (flush_rings & RING_BSD)
- i915_gem_flush_ring(dev, file_priv,
- &dev_priv->bsd_ring,
- invalidate_domains, flush_domains);
- if (flush_rings & RING_BLT)
- i915_gem_flush_ring(dev, file_priv,
- &dev_priv->blt_ring,
- invalidate_domains, flush_domains);
- }
-}
-
/**
* Ensures that all rendering to the object has completed and the object is
* safe to unbind from the GTT or access from the CPU.
*/
-static int
-i915_gem_object_wait_rendering(struct drm_gem_object *obj,
+int
+i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj,
bool interruptible)
{
- struct drm_device *dev = obj->dev;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ struct drm_device *dev = obj->base.dev;
int ret;
/* This function only exists to support waiting for existing rendering,
* not for emitting required flushes.
*/
- BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0);
+ BUG_ON((obj->base.write_domain & I915_GEM_GPU_DOMAINS) != 0);
/* If there is rendering queued on the buffer being evicted, wait for
* it.
*/
- if (obj_priv->active) {
+ if (obj->active) {
ret = i915_do_wait_request(dev,
- obj_priv->last_rendering_seqno,
+ obj->last_rendering_seqno,
interruptible,
- obj_priv->ring);
+ obj->ring);
if (ret)
return ret;
}
* Unbinds an object from the GTT aperture.
*/
int
-i915_gem_object_unbind(struct drm_gem_object *obj)
+i915_gem_object_unbind(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
int ret = 0;
- if (obj_priv->gtt_space == NULL)
+ if (obj->gtt_space == NULL)
return 0;
- if (obj_priv->pin_count != 0) {
+ if (obj->pin_count != 0) {
DRM_ERROR("Attempting to unbind pinned buffer\n");
return -EINVAL;
}
*/
if (ret) {
i915_gem_clflush_object(obj);
- obj->read_domains = obj->write_domain = I915_GEM_DOMAIN_CPU;
+ obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU;
}
/* release the fence reg _after_ flushing */
- if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
- i915_gem_clear_fence_reg(obj);
-
- drm_unbind_agp(obj_priv->agp_mem);
- drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE);
+ ret = i915_gem_object_put_fence(obj);
+ if (ret == -ERESTARTSYS)
+ return ret;
- i915_gem_object_put_pages(obj);
- BUG_ON(obj_priv->pages_refcount);
+ i915_gem_gtt_unbind_object(obj);
+ i915_gem_object_put_pages_gtt(obj);
- i915_gem_info_remove_gtt(dev_priv, obj->size);
- list_del_init(&obj_priv->mm_list);
+ list_del_init(&obj->gtt_list);
+ list_del_init(&obj->mm_list);
+ /* Avoid an unnecessary call to unbind on rebind. */
+ obj->map_and_fenceable = true;
- drm_mm_put_block(obj_priv->gtt_space);
- obj_priv->gtt_space = NULL;
- obj_priv->gtt_offset = 0;
+ drm_mm_put_block(obj->gtt_space);
+ obj->gtt_space = NULL;
+ obj->gtt_offset = 0;
- if (i915_gem_object_is_purgeable(obj_priv))
+ if (i915_gem_object_is_purgeable(obj))
i915_gem_object_truncate(obj);
trace_i915_gem_object_unbind(obj);
return ret;
}
+int
+i915_gem_flush_ring(struct drm_device *dev,
+ struct intel_ring_buffer *ring,
+ uint32_t invalidate_domains,
+ uint32_t flush_domains)
+{
+ int ret;
+
+ ret = ring->flush(ring, invalidate_domains, flush_domains);
+ if (ret)
+ return ret;
+
+ i915_gem_process_flushing_list(dev, flush_domains, ring);
+ return 0;
+}
+
static int i915_ring_idle(struct drm_device *dev,
struct intel_ring_buffer *ring)
{
+ int ret;
+
if (list_empty(&ring->gpu_write_list) && list_empty(&ring->active_list))
return 0;
- i915_gem_flush_ring(dev, NULL, ring,
- I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS);
+ if (!list_empty(&ring->gpu_write_list)) {
+ ret = i915_gem_flush_ring(dev, ring,
+ I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS);
+ if (ret)
+ return ret;
+ }
+
return i915_wait_request(dev,
i915_gem_next_request_seqno(dev, ring),
ring);
{
drm_i915_private_t *dev_priv = dev->dev_private;
bool lists_empty;
- int ret;
+ int ret, i;
lists_empty = (list_empty(&dev_priv->mm.flushing_list) &&
list_empty(&dev_priv->mm.active_list));
return 0;
/* Flush everything onto the inactive list. */
- ret = i915_ring_idle(dev, &dev_priv->render_ring);
- if (ret)
- return ret;
-
- ret = i915_ring_idle(dev, &dev_priv->bsd_ring);
- if (ret)
- return ret;
-
- ret = i915_ring_idle(dev, &dev_priv->blt_ring);
- if (ret)
- return ret;
-
- return 0;
-}
-
-static int
-i915_gem_object_get_pages(struct drm_gem_object *obj,
- gfp_t gfpmask)
-{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- int page_count, i;
- struct address_space *mapping;
- struct inode *inode;
- struct page *page;
-
- BUG_ON(obj_priv->pages_refcount
- == DRM_I915_GEM_OBJECT_MAX_PAGES_REFCOUNT);
-
- if (obj_priv->pages_refcount++ != 0)
- return 0;
-
- /* Get the list of pages out of our struct file. They'll be pinned
- * at this point until we release them.
- */
- page_count = obj->size / PAGE_SIZE;
- BUG_ON(obj_priv->pages != NULL);
- obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *));
- if (obj_priv->pages == NULL) {
- obj_priv->pages_refcount--;
- return -ENOMEM;
- }
-
- inode = obj->filp->f_path.dentry->d_inode;
- mapping = inode->i_mapping;
- for (i = 0; i < page_count; i++) {
- page = read_cache_page_gfp(mapping, i,
- GFP_HIGHUSER |
- __GFP_COLD |
- __GFP_RECLAIMABLE |
- gfpmask);
- if (IS_ERR(page))
- goto err_pages;
-
- obj_priv->pages[i] = page;
+ for (i = 0; i < I915_NUM_RINGS; i++) {
+ ret = i915_ring_idle(dev, &dev_priv->ring[i]);
+ if (ret)
+ return ret;
}
- if (obj_priv->tiling_mode != I915_TILING_NONE)
- i915_gem_object_do_bit_17_swizzle(obj);
-
return 0;
-
-err_pages:
- while (i--)
- page_cache_release(obj_priv->pages[i]);
-
- drm_free_large(obj_priv->pages);
- obj_priv->pages = NULL;
- obj_priv->pages_refcount--;
- return PTR_ERR(page);
}
-static void sandybridge_write_fence_reg(struct drm_i915_fence_reg *reg)
+static int sandybridge_write_fence_reg(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *pipelined)
{
- struct drm_gem_object *obj = reg->obj;
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- int regnum = obj_priv->fence_reg;
+ u32 size = obj->gtt_space->size;
+ int regnum = obj->fence_reg;
uint64_t val;
- val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) &
- 0xfffff000) << 32;
- val |= obj_priv->gtt_offset & 0xfffff000;
- val |= (uint64_t)((obj_priv->stride / 128) - 1) <<
+ val = (uint64_t)((obj->gtt_offset + size - 4096) &
+ 0xfffff000) << 32;
+ val |= obj->gtt_offset & 0xfffff000;
+ val |= (uint64_t)((obj->stride / 128) - 1) <<
SANDYBRIDGE_FENCE_PITCH_SHIFT;
- if (obj_priv->tiling_mode == I915_TILING_Y)
+ if (obj->tiling_mode == I915_TILING_Y)
val |= 1 << I965_FENCE_TILING_Y_SHIFT;
val |= I965_FENCE_REG_VALID;
- I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (regnum * 8), val);
+ if (pipelined) {
+ int ret = intel_ring_begin(pipelined, 6);
+ if (ret)
+ return ret;
+
+ intel_ring_emit(pipelined, MI_NOOP);
+ intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(2));
+ intel_ring_emit(pipelined, FENCE_REG_SANDYBRIDGE_0 + regnum*8);
+ intel_ring_emit(pipelined, (u32)val);
+ intel_ring_emit(pipelined, FENCE_REG_SANDYBRIDGE_0 + regnum*8 + 4);
+ intel_ring_emit(pipelined, (u32)(val >> 32));
+ intel_ring_advance(pipelined);
+ } else
+ I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + regnum * 8, val);
+
+ return 0;
}
-static void i965_write_fence_reg(struct drm_i915_fence_reg *reg)
+static int i965_write_fence_reg(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *pipelined)
{
- struct drm_gem_object *obj = reg->obj;
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- int regnum = obj_priv->fence_reg;
+ u32 size = obj->gtt_space->size;
+ int regnum = obj->fence_reg;
uint64_t val;
- val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) &
+ val = (uint64_t)((obj->gtt_offset + size - 4096) &
0xfffff000) << 32;
- val |= obj_priv->gtt_offset & 0xfffff000;
- val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT;
- if (obj_priv->tiling_mode == I915_TILING_Y)
+ val |= obj->gtt_offset & 0xfffff000;
+ val |= ((obj->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT;
+ if (obj->tiling_mode == I915_TILING_Y)
val |= 1 << I965_FENCE_TILING_Y_SHIFT;
val |= I965_FENCE_REG_VALID;
- I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val);
+ if (pipelined) {
+ int ret = intel_ring_begin(pipelined, 6);
+ if (ret)
+ return ret;
+
+ intel_ring_emit(pipelined, MI_NOOP);
+ intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(2));
+ intel_ring_emit(pipelined, FENCE_REG_965_0 + regnum*8);
+ intel_ring_emit(pipelined, (u32)val);
+ intel_ring_emit(pipelined, FENCE_REG_965_0 + regnum*8 + 4);
+ intel_ring_emit(pipelined, (u32)(val >> 32));
+ intel_ring_advance(pipelined);
+ } else
+ I915_WRITE64(FENCE_REG_965_0 + regnum * 8, val);
+
+ return 0;
}
-static void i915_write_fence_reg(struct drm_i915_fence_reg *reg)
+static int i915_write_fence_reg(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *pipelined)
{
- struct drm_gem_object *obj = reg->obj;
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- int regnum = obj_priv->fence_reg;
+ u32 size = obj->gtt_space->size;
+ u32 fence_reg, val, pitch_val;
int tile_width;
- uint32_t fence_reg, val;
- uint32_t pitch_val;
- if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) ||
- (obj_priv->gtt_offset & (obj->size - 1))) {
- WARN(1, "%s: object 0x%08x not 1M or size (0x%zx) aligned\n",
- __func__, obj_priv->gtt_offset, obj->size);
- return;
- }
+ if (WARN((obj->gtt_offset & ~I915_FENCE_START_MASK) ||
+ (size & -size) != size ||
+ (obj->gtt_offset & (size - 1)),
+ "object 0x%08x [fenceable? %d] not 1M or pot-size (0x%08x) aligned\n",
+ obj->gtt_offset, obj->map_and_fenceable, size))
+ return -EINVAL;
- if (obj_priv->tiling_mode == I915_TILING_Y &&
- HAS_128_BYTE_Y_TILING(dev))
+ if (obj->tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev))
tile_width = 128;
else
tile_width = 512;
/* Note: pitch better be a power of two tile widths */
- pitch_val = obj_priv->stride / tile_width;
+ pitch_val = obj->stride / tile_width;
pitch_val = ffs(pitch_val) - 1;
- if (obj_priv->tiling_mode == I915_TILING_Y &&
- HAS_128_BYTE_Y_TILING(dev))
- WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL);
- else
- WARN_ON(pitch_val > I915_FENCE_MAX_PITCH_VAL);
-
- val = obj_priv->gtt_offset;
- if (obj_priv->tiling_mode == I915_TILING_Y)
+ val = obj->gtt_offset;
+ if (obj->tiling_mode == I915_TILING_Y)
val |= 1 << I830_FENCE_TILING_Y_SHIFT;
- val |= I915_FENCE_SIZE_BITS(obj->size);
+ val |= I915_FENCE_SIZE_BITS(size);
val |= pitch_val << I830_FENCE_PITCH_SHIFT;
val |= I830_FENCE_REG_VALID;
- if (regnum < 8)
- fence_reg = FENCE_REG_830_0 + (regnum * 4);
+ fence_reg = obj->fence_reg;
+ if (fence_reg < 8)
+ fence_reg = FENCE_REG_830_0 + fence_reg * 4;
else
- fence_reg = FENCE_REG_945_8 + ((regnum - 8) * 4);
- I915_WRITE(fence_reg, val);
+ fence_reg = FENCE_REG_945_8 + (fence_reg - 8) * 4;
+
+ if (pipelined) {
+ int ret = intel_ring_begin(pipelined, 4);
+ if (ret)
+ return ret;
+
+ intel_ring_emit(pipelined, MI_NOOP);
+ intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(1));
+ intel_ring_emit(pipelined, fence_reg);
+ intel_ring_emit(pipelined, val);
+ intel_ring_advance(pipelined);
+ } else
+ I915_WRITE(fence_reg, val);
+
+ return 0;
}
-static void i830_write_fence_reg(struct drm_i915_fence_reg *reg)
+static int i830_write_fence_reg(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *pipelined)
{
- struct drm_gem_object *obj = reg->obj;
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- int regnum = obj_priv->fence_reg;
+ u32 size = obj->gtt_space->size;
+ int regnum = obj->fence_reg;
uint32_t val;
uint32_t pitch_val;
- uint32_t fence_size_bits;
- if ((obj_priv->gtt_offset & ~I830_FENCE_START_MASK) ||
- (obj_priv->gtt_offset & (obj->size - 1))) {
- WARN(1, "%s: object 0x%08x not 512K or size aligned\n",
- __func__, obj_priv->gtt_offset);
- return;
- }
+ if (WARN((obj->gtt_offset & ~I830_FENCE_START_MASK) ||
+ (size & -size) != size ||
+ (obj->gtt_offset & (size - 1)),
+ "object 0x%08x not 512K or pot-size 0x%08x aligned\n",
+ obj->gtt_offset, size))
+ return -EINVAL;
- pitch_val = obj_priv->stride / 128;
+ pitch_val = obj->stride / 128;
pitch_val = ffs(pitch_val) - 1;
- WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL);
- val = obj_priv->gtt_offset;
- if (obj_priv->tiling_mode == I915_TILING_Y)
+ val = obj->gtt_offset;
+ if (obj->tiling_mode == I915_TILING_Y)
val |= 1 << I830_FENCE_TILING_Y_SHIFT;
- fence_size_bits = I830_FENCE_SIZE_BITS(obj->size);
- WARN_ON(fence_size_bits & ~0x00000f00);
- val |= fence_size_bits;
+ val |= I830_FENCE_SIZE_BITS(size);
val |= pitch_val << I830_FENCE_PITCH_SHIFT;
val |= I830_FENCE_REG_VALID;
- I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val);
+ if (pipelined) {
+ int ret = intel_ring_begin(pipelined, 4);
+ if (ret)
+ return ret;
+
+ intel_ring_emit(pipelined, MI_NOOP);
+ intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(1));
+ intel_ring_emit(pipelined, FENCE_REG_830_0 + regnum*4);
+ intel_ring_emit(pipelined, val);
+ intel_ring_advance(pipelined);
+ } else
+ I915_WRITE(FENCE_REG_830_0 + regnum * 4, val);
+
+ return 0;
}
-static int i915_find_fence_reg(struct drm_device *dev,
- bool interruptible)
+static bool ring_passed_seqno(struct intel_ring_buffer *ring, u32 seqno)
{
- struct drm_i915_fence_reg *reg = NULL;
- struct drm_i915_gem_object *obj_priv = NULL;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_gem_object *obj = NULL;
- int i, avail, ret;
-
- /* First try to find a free reg */
- avail = 0;
- for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) {
- reg = &dev_priv->fence_regs[i];
- if (!reg->obj)
- return i;
+ return i915_seqno_passed(ring->get_seqno(ring), seqno);
+}
- obj_priv = to_intel_bo(reg->obj);
- if (!obj_priv->pin_count)
- avail++;
- }
+static int
+i915_gem_object_flush_fence(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *pipelined,
+ bool interruptible)
+{
+ int ret;
- if (avail == 0)
- return -ENOSPC;
+ if (obj->fenced_gpu_access) {
+ if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) {
+ ret = i915_gem_flush_ring(obj->base.dev,
+ obj->last_fenced_ring,
+ 0, obj->base.write_domain);
+ if (ret)
+ return ret;
+ }
- /* None available, try to steal one or wait for a user to finish */
- i = I915_FENCE_REG_NONE;
- list_for_each_entry(reg, &dev_priv->mm.fence_list,
- lru_list) {
- obj = reg->obj;
- obj_priv = to_intel_bo(obj);
+ obj->fenced_gpu_access = false;
+ }
- if (obj_priv->pin_count)
- continue;
+ if (obj->last_fenced_seqno && pipelined != obj->last_fenced_ring) {
+ if (!ring_passed_seqno(obj->last_fenced_ring,
+ obj->last_fenced_seqno)) {
+ ret = i915_do_wait_request(obj->base.dev,
+ obj->last_fenced_seqno,
+ interruptible,
+ obj->last_fenced_ring);
+ if (ret)
+ return ret;
+ }
- /* found one! */
- i = obj_priv->fence_reg;
- break;
+ obj->last_fenced_seqno = 0;
+ obj->last_fenced_ring = NULL;
}
- BUG_ON(i == I915_FENCE_REG_NONE);
+ /* Ensure that all CPU reads are completed before installing a fence
+ * and all writes before removing the fence.
+ */
+ if (obj->base.read_domains & I915_GEM_DOMAIN_GTT)
+ mb();
+
+ return 0;
+}
+
+int
+i915_gem_object_put_fence(struct drm_i915_gem_object *obj)
+{
+ int ret;
- /* We only have a reference on obj from the active list. put_fence_reg
- * might drop that one, causing a use-after-free in it. So hold a
- * private reference to obj like the other callers of put_fence_reg
- * (set_tiling ioctl) do. */
- drm_gem_object_reference(obj);
- ret = i915_gem_object_put_fence_reg(obj, interruptible);
- drm_gem_object_unreference(obj);
- if (ret != 0)
+ if (obj->tiling_mode)
+ i915_gem_release_mmap(obj);
+
+ ret = i915_gem_object_flush_fence(obj, NULL, true);
+ if (ret)
return ret;
- return i;
+ if (obj->fence_reg != I915_FENCE_REG_NONE) {
+ struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
+ i915_gem_clear_fence_reg(obj->base.dev,
+ &dev_priv->fence_regs[obj->fence_reg]);
+
+ obj->fence_reg = I915_FENCE_REG_NONE;
+ }
+
+ return 0;
+}
+
+static struct drm_i915_fence_reg *
+i915_find_fence_reg(struct drm_device *dev,
+ struct intel_ring_buffer *pipelined)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_fence_reg *reg, *first, *avail;
+ int i;
+
+ /* First try to find a free reg */
+ avail = NULL;
+ for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) {
+ reg = &dev_priv->fence_regs[i];
+ if (!reg->obj)
+ return reg;
+
+ if (!reg->obj->pin_count)
+ avail = reg;
+ }
+
+ if (avail == NULL)
+ return NULL;
+
+ /* None available, try to steal one or wait for a user to finish */
+ avail = first = NULL;
+ list_for_each_entry(reg, &dev_priv->mm.fence_list, lru_list) {
+ if (reg->obj->pin_count)
+ continue;
+
+ if (first == NULL)
+ first = reg;
+
+ if (!pipelined ||
+ !reg->obj->last_fenced_ring ||
+ reg->obj->last_fenced_ring == pipelined) {
+ avail = reg;
+ break;
+ }
+ }
+
+ if (avail == NULL)
+ avail = first;
+
+ return avail;
}
/**
- * i915_gem_object_get_fence_reg - set up a fence reg for an object
+ * i915_gem_object_get_fence - set up a fence reg for an object
* @obj: object to map through a fence reg
+ * @pipelined: ring on which to queue the change, or NULL for CPU access
+ * @interruptible: must we wait uninterruptibly for the register to retire?
*
* When mapping objects through the GTT, userspace wants to be able to write
* to them without having to worry about swizzling if the object is tiled.
* and tiling format.
*/
int
-i915_gem_object_get_fence_reg(struct drm_gem_object *obj,
- bool interruptible)
+i915_gem_object_get_fence(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *pipelined,
+ bool interruptible)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- struct drm_i915_fence_reg *reg = NULL;
+ struct drm_i915_fence_reg *reg;
int ret;
- /* Just update our place in the LRU if our fence is getting used. */
- if (obj_priv->fence_reg != I915_FENCE_REG_NONE) {
- reg = &dev_priv->fence_regs[obj_priv->fence_reg];
+ /* XXX disable pipelining. There are bugs. Shocking. */
+ pipelined = NULL;
+
+ /* Just update our place in the LRU if our fence is getting reused. */
+ if (obj->fence_reg != I915_FENCE_REG_NONE) {
+ reg = &dev_priv->fence_regs[obj->fence_reg];
list_move_tail(®->lru_list, &dev_priv->mm.fence_list);
+
+ if (!obj->fenced_gpu_access && !obj->last_fenced_seqno)
+ pipelined = NULL;
+
+ if (!pipelined) {
+ if (reg->setup_seqno) {
+ if (!ring_passed_seqno(obj->last_fenced_ring,
+ reg->setup_seqno)) {
+ ret = i915_do_wait_request(obj->base.dev,
+ reg->setup_seqno,
+ interruptible,
+ obj->last_fenced_ring);
+ if (ret)
+ return ret;
+ }
+
+ reg->setup_seqno = 0;
+ }
+ } else if (obj->last_fenced_ring &&
+ obj->last_fenced_ring != pipelined) {
+ ret = i915_gem_object_flush_fence(obj,
+ pipelined,
+ interruptible);
+ if (ret)
+ return ret;
+ } else if (obj->tiling_changed) {
+ if (obj->fenced_gpu_access) {
+ if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) {
+ ret = i915_gem_flush_ring(obj->base.dev, obj->ring,
+ 0, obj->base.write_domain);
+ if (ret)
+ return ret;
+ }
+
+ obj->fenced_gpu_access = false;
+ }
+ }
+
+ if (!obj->fenced_gpu_access && !obj->last_fenced_seqno)
+ pipelined = NULL;
+ BUG_ON(!pipelined && reg->setup_seqno);
+
+ if (obj->tiling_changed) {
+ if (pipelined) {
+ reg->setup_seqno =
+ i915_gem_next_request_seqno(dev, pipelined);
+ obj->last_fenced_seqno = reg->setup_seqno;
+ obj->last_fenced_ring = pipelined;
+ }
+ goto update;
+ }
+
return 0;
}
- switch (obj_priv->tiling_mode) {
- case I915_TILING_NONE:
- WARN(1, "allocating a fence for non-tiled object?\n");
- break;
- case I915_TILING_X:
- if (!obj_priv->stride)
- return -EINVAL;
- WARN((obj_priv->stride & (512 - 1)),
- "object 0x%08x is X tiled but has non-512B pitch\n",
- obj_priv->gtt_offset);
- break;
- case I915_TILING_Y:
- if (!obj_priv->stride)
- return -EINVAL;
- WARN((obj_priv->stride & (128 - 1)),
- "object 0x%08x is Y tiled but has non-128B pitch\n",
- obj_priv->gtt_offset);
- break;
- }
+ reg = i915_find_fence_reg(dev, pipelined);
+ if (reg == NULL)
+ return -ENOSPC;
- ret = i915_find_fence_reg(dev, interruptible);
- if (ret < 0)
+ ret = i915_gem_object_flush_fence(obj, pipelined, interruptible);
+ if (ret)
return ret;
- obj_priv->fence_reg = ret;
- reg = &dev_priv->fence_regs[obj_priv->fence_reg];
- list_add_tail(®->lru_list, &dev_priv->mm.fence_list);
+ if (reg->obj) {
+ struct drm_i915_gem_object *old = reg->obj;
+
+ drm_gem_object_reference(&old->base);
+
+ if (old->tiling_mode)
+ i915_gem_release_mmap(old);
+
+ ret = i915_gem_object_flush_fence(old,
+ pipelined,
+ interruptible);
+ if (ret) {
+ drm_gem_object_unreference(&old->base);
+ return ret;
+ }
+
+ if (old->last_fenced_seqno == 0 && obj->last_fenced_seqno == 0)
+ pipelined = NULL;
+
+ old->fence_reg = I915_FENCE_REG_NONE;
+ old->last_fenced_ring = pipelined;
+ old->last_fenced_seqno =
+ pipelined ? i915_gem_next_request_seqno(dev, pipelined) : 0;
+
+ drm_gem_object_unreference(&old->base);
+ } else if (obj->last_fenced_seqno == 0)
+ pipelined = NULL;
reg->obj = obj;
+ list_move_tail(®->lru_list, &dev_priv->mm.fence_list);
+ obj->fence_reg = reg - dev_priv->fence_regs;
+ obj->last_fenced_ring = pipelined;
+ reg->setup_seqno =
+ pipelined ? i915_gem_next_request_seqno(dev, pipelined) : 0;
+ obj->last_fenced_seqno = reg->setup_seqno;
+
+update:
+ obj->tiling_changed = false;
switch (INTEL_INFO(dev)->gen) {
case 6:
- sandybridge_write_fence_reg(reg);
+ ret = sandybridge_write_fence_reg(obj, pipelined);
break;
case 5:
case 4:
- i965_write_fence_reg(reg);
+ ret = i965_write_fence_reg(obj, pipelined);
break;
case 3:
- i915_write_fence_reg(reg);
+ ret = i915_write_fence_reg(obj, pipelined);
break;
case 2:
- i830_write_fence_reg(reg);
+ ret = i830_write_fence_reg(obj, pipelined);
break;
}
- trace_i915_gem_object_get_fence(obj, obj_priv->fence_reg,
- obj_priv->tiling_mode);
-
- return 0;
+ return ret;
}
/**
* @obj: object to clear
*
* Zeroes out the fence register itself and clears out the associated
- * data structures in dev_priv and obj_priv.
+ * data structures in dev_priv and obj.
*/
static void
-i915_gem_clear_fence_reg(struct drm_gem_object *obj)
+i915_gem_clear_fence_reg(struct drm_device *dev,
+ struct drm_i915_fence_reg *reg)
{
- struct drm_device *dev = obj->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- struct drm_i915_fence_reg *reg =
- &dev_priv->fence_regs[obj_priv->fence_reg];
- uint32_t fence_reg;
+ uint32_t fence_reg = reg - dev_priv->fence_regs;
switch (INTEL_INFO(dev)->gen) {
case 6:
- I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 +
- (obj_priv->fence_reg * 8), 0);
+ I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + fence_reg*8, 0);
break;
case 5:
case 4:
- I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0);
+ I915_WRITE64(FENCE_REG_965_0 + fence_reg*8, 0);
break;
case 3:
- if (obj_priv->fence_reg >= 8)
- fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - 8) * 4;
+ if (fence_reg >= 8)
+ fence_reg = FENCE_REG_945_8 + (fence_reg - 8) * 4;
else
case 2:
- fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4;
+ fence_reg = FENCE_REG_830_0 + fence_reg * 4;
I915_WRITE(fence_reg, 0);
break;
}
- reg->obj = NULL;
- obj_priv->fence_reg = I915_FENCE_REG_NONE;
list_del_init(®->lru_list);
-}
-
-/**
- * i915_gem_object_put_fence_reg - waits on outstanding fenced access
- * to the buffer to finish, and then resets the fence register.
- * @obj: tiled object holding a fence register.
- * @bool: whether the wait upon the fence is interruptible
- *
- * Zeroes out the fence register itself and clears out the associated
- * data structures in dev_priv and obj_priv.
- */
-int
-i915_gem_object_put_fence_reg(struct drm_gem_object *obj,
- bool interruptible)
-{
- struct drm_device *dev = obj->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- struct drm_i915_fence_reg *reg;
-
- if (obj_priv->fence_reg == I915_FENCE_REG_NONE)
- return 0;
-
- /* If we've changed tiling, GTT-mappings of the object
- * need to re-fault to ensure that the correct fence register
- * setup is in place.
- */
- i915_gem_release_mmap(obj);
-
- /* On the i915, GPU access to tiled buffers is via a fence,
- * therefore we must wait for any outstanding access to complete
- * before clearing the fence.
- */
- reg = &dev_priv->fence_regs[obj_priv->fence_reg];
- if (reg->gpu) {
- int ret;
-
- ret = i915_gem_object_flush_gpu_write_domain(obj);
- if (ret)
- return ret;
-
- ret = i915_gem_object_wait_rendering(obj, interruptible);
- if (ret)
- return ret;
-
- reg->gpu = false;
- }
-
- i915_gem_object_flush_gtt_write_domain(obj);
- i915_gem_clear_fence_reg(obj);
-
- return 0;
+ reg->obj = NULL;
+ reg->setup_seqno = 0;
}
/**
* Finds free space in the GTT aperture and binds the object there.
*/
static int
-i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
+i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj,
+ unsigned alignment,
+ bool map_and_fenceable)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
struct drm_mm_node *free_space;
- gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN;
+ gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN;
+ u32 size, fence_size, fence_alignment, unfenced_alignment;
+ bool mappable, fenceable;
int ret;
- if (obj_priv->madv != I915_MADV_WILLNEED) {
+ if (obj->madv != I915_MADV_WILLNEED) {
DRM_ERROR("Attempting to bind a purgeable object\n");
return -EINVAL;
}
+ fence_size = i915_gem_get_gtt_size(obj);
+ fence_alignment = i915_gem_get_gtt_alignment(obj);
+ unfenced_alignment = i915_gem_get_unfenced_gtt_alignment(obj);
+
if (alignment == 0)
- alignment = i915_gem_get_gtt_alignment(obj);
- if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) {
+ alignment = map_and_fenceable ? fence_alignment :
+ unfenced_alignment;
+ if (map_and_fenceable && alignment & (fence_alignment - 1)) {
DRM_ERROR("Invalid object alignment requested %u\n", alignment);
return -EINVAL;
}
+ size = map_and_fenceable ? fence_size : obj->base.size;
+
/* If the object is bigger than the entire aperture, reject it early
* before evicting everything in a vain attempt to find space.
*/
- if (obj->size > dev_priv->mm.gtt_total) {
+ if (obj->base.size >
+ (map_and_fenceable ? dev_priv->mm.gtt_mappable_end : dev_priv->mm.gtt_total)) {
DRM_ERROR("Attempting to bind an object larger than the aperture\n");
return -E2BIG;
}
search_free:
- free_space = drm_mm_search_free(&dev_priv->mm.gtt_space,
- obj->size, alignment, 0);
- if (free_space != NULL)
- obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size,
- alignment);
- if (obj_priv->gtt_space == NULL) {
+ if (map_and_fenceable)
+ free_space =
+ drm_mm_search_free_in_range(&dev_priv->mm.gtt_space,
+ size, alignment, 0,
+ dev_priv->mm.gtt_mappable_end,
+ 0);
+ else
+ free_space = drm_mm_search_free(&dev_priv->mm.gtt_space,
+ size, alignment, 0);
+
+ if (free_space != NULL) {
+ if (map_and_fenceable)
+ obj->gtt_space =
+ drm_mm_get_block_range_generic(free_space,
+ size, alignment, 0,
+ dev_priv->mm.gtt_mappable_end,
+ 0);
+ else
+ obj->gtt_space =
+ drm_mm_get_block(free_space, size, alignment);
+ }
+ if (obj->gtt_space == NULL) {
/* If the gtt is empty and we're still having trouble
* fitting our object in, we're out of memory.
*/
- ret = i915_gem_evict_something(dev, obj->size, alignment);
+ ret = i915_gem_evict_something(dev, size, alignment,
+ map_and_fenceable);
if (ret)
return ret;
goto search_free;
}
- ret = i915_gem_object_get_pages(obj, gfpmask);
+ ret = i915_gem_object_get_pages_gtt(obj, gfpmask);
if (ret) {
- drm_mm_put_block(obj_priv->gtt_space);
- obj_priv->gtt_space = NULL;
+ drm_mm_put_block(obj->gtt_space);
+ obj->gtt_space = NULL;
if (ret == -ENOMEM) {
- /* first try to clear up some space from the GTT */
- ret = i915_gem_evict_something(dev, obj->size,
- alignment);
+ /* first try to reclaim some memory by clearing the GTT */
+ ret = i915_gem_evict_everything(dev, false);
if (ret) {
/* now try to shrink everyone else */
if (gfpmask) {
goto search_free;
}
- return ret;
+ return -ENOMEM;
}
goto search_free;
return ret;
}
- /* Create an AGP memory structure pointing at our pages, and bind it
- * into the GTT.
- */
- obj_priv->agp_mem = drm_agp_bind_pages(dev,
- obj_priv->pages,
- obj->size >> PAGE_SHIFT,
- obj_priv->gtt_space->start,
- obj_priv->agp_type);
- if (obj_priv->agp_mem == NULL) {
- i915_gem_object_put_pages(obj);
- drm_mm_put_block(obj_priv->gtt_space);
- obj_priv->gtt_space = NULL;
-
- ret = i915_gem_evict_something(dev, obj->size, alignment);
- if (ret)
+ ret = i915_gem_gtt_bind_object(obj);
+ if (ret) {
+ i915_gem_object_put_pages_gtt(obj);
+ drm_mm_put_block(obj->gtt_space);
+ obj->gtt_space = NULL;
+
+ if (i915_gem_evict_everything(dev, false))
return ret;
goto search_free;
}
- /* keep track of bounds object by adding it to the inactive list */
- list_add_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list);
- i915_gem_info_add_gtt(dev_priv, obj->size);
+ list_add_tail(&obj->gtt_list, &dev_priv->mm.gtt_list);
+ list_add_tail(&obj->mm_list, &dev_priv->mm.inactive_list);
/* Assert that the object is not currently in any GPU domain. As it
* wasn't in the GTT, there shouldn't be any way it could have been in
* a GPU cache
*/
- BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS);
- BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS);
+ BUG_ON(obj->base.read_domains & I915_GEM_GPU_DOMAINS);
+ BUG_ON(obj->base.write_domain & I915_GEM_GPU_DOMAINS);
+
+ obj->gtt_offset = obj->gtt_space->start;
- obj_priv->gtt_offset = obj_priv->gtt_space->start;
- trace_i915_gem_object_bind(obj, obj_priv->gtt_offset);
+ fenceable =
+ obj->gtt_space->size == fence_size &&
+ (obj->gtt_space->start & (fence_alignment -1)) == 0;
+ mappable =
+ obj->gtt_offset + obj->base.size <= dev_priv->mm.gtt_mappable_end;
+
+ obj->map_and_fenceable = mappable && fenceable;
+
+ trace_i915_gem_object_bind(obj, obj->gtt_offset, map_and_fenceable);
return 0;
}
void
-i915_gem_clflush_object(struct drm_gem_object *obj)
+i915_gem_clflush_object(struct drm_i915_gem_object *obj)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
-
/* If we don't have a page list set up, then we're not pinned
* to GPU, and we can ignore the cache flush because it'll happen
* again at bind time.
*/
- if (obj_priv->pages == NULL)
+ if (obj->pages == NULL)
return;
trace_i915_gem_object_clflush(obj);
- drm_clflush_pages(obj_priv->pages, obj->size / PAGE_SIZE);
+ drm_clflush_pages(obj->pages, obj->base.size / PAGE_SIZE);
}
/** Flushes any GPU write domain for the object if it's dirty. */
static int
-i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj)
+i915_gem_object_flush_gpu_write_domain(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
- uint32_t old_write_domain;
+ struct drm_device *dev = obj->base.dev;
- if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0)
+ if ((obj->base.write_domain & I915_GEM_GPU_DOMAINS) == 0)
return 0;
/* Queue the GPU write cache flushing we need. */
- old_write_domain = obj->write_domain;
- i915_gem_flush_ring(dev, NULL,
- to_intel_bo(obj)->ring,
- 0, obj->write_domain);
- BUG_ON(obj->write_domain);
-
- trace_i915_gem_object_change_domain(obj,
- obj->read_domains,
- old_write_domain);
-
- return 0;
+ return i915_gem_flush_ring(dev, obj->ring, 0, obj->base.write_domain);
}
/** Flushes the GTT write domain for the object if it's dirty. */
static void
-i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj)
+i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj)
{
uint32_t old_write_domain;
- if (obj->write_domain != I915_GEM_DOMAIN_GTT)
+ if (obj->base.write_domain != I915_GEM_DOMAIN_GTT)
return;
- /* No actual flushing is required for the GTT write domain. Writes
+ /* No actual flushing is required for the GTT write domain. Writes
* to it immediately go to main memory as far as we know, so there's
* no chipset flush. It also doesn't land in render cache.
+ *
+ * However, we do have to enforce the order so that all writes through
+ * the GTT land before any writes to the device, such as updates to
+ * the GATT itself.
*/
- old_write_domain = obj->write_domain;
- obj->write_domain = 0;
+ wmb();
+
+ i915_gem_release_mmap(obj);
+
+ old_write_domain = obj->base.write_domain;
+ obj->base.write_domain = 0;
trace_i915_gem_object_change_domain(obj,
- obj->read_domains,
+ obj->base.read_domains,
old_write_domain);
}
/** Flushes the CPU write domain for the object if it's dirty. */
static void
-i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj)
+i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
uint32_t old_write_domain;
- if (obj->write_domain != I915_GEM_DOMAIN_CPU)
+ if (obj->base.write_domain != I915_GEM_DOMAIN_CPU)
return;
i915_gem_clflush_object(obj);
- drm_agp_chipset_flush(dev);
- old_write_domain = obj->write_domain;
- obj->write_domain = 0;
+ intel_gtt_chipset_flush();
+ old_write_domain = obj->base.write_domain;
+ obj->base.write_domain = 0;
trace_i915_gem_object_change_domain(obj,
- obj->read_domains,
+ obj->base.read_domains,
old_write_domain);
}
* flushes to occur.
*/
int
-i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write)
+i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
uint32_t old_write_domain, old_read_domains;
int ret;
/* Not valid to be called on unbound objects. */
- if (obj_priv->gtt_space == NULL)
+ if (obj->gtt_space == NULL)
return -EINVAL;
ret = i915_gem_object_flush_gpu_write_domain(obj);
- if (ret != 0)
- return ret;
- ret = i915_gem_object_wait_rendering(obj, true);
if (ret)
return ret;
+ if (obj->pending_gpu_write || write) {
+ ret = i915_gem_object_wait_rendering(obj, true);
+ if (ret)
+ return ret;
+ }
+
i915_gem_object_flush_cpu_write_domain(obj);
- old_write_domain = obj->write_domain;
- old_read_domains = obj->read_domains;
+ old_write_domain = obj->base.write_domain;
+ old_read_domains = obj->base.read_domains;
/* It should now be out of any other write domains, and we can update
* the domain values for our changes.
*/
- BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0);
- obj->read_domains |= I915_GEM_DOMAIN_GTT;
+ BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_GTT) != 0);
+ obj->base.read_domains |= I915_GEM_DOMAIN_GTT;
if (write) {
- obj->read_domains = I915_GEM_DOMAIN_GTT;
- obj->write_domain = I915_GEM_DOMAIN_GTT;
- obj_priv->dirty = 1;
+ obj->base.read_domains = I915_GEM_DOMAIN_GTT;
+ obj->base.write_domain = I915_GEM_DOMAIN_GTT;
+ obj->dirty = 1;
}
trace_i915_gem_object_change_domain(obj,
* wait, as in modesetting process we're not supposed to be interrupted.
*/
int
-i915_gem_object_set_to_display_plane(struct drm_gem_object *obj,
- bool pipelined)
+i915_gem_object_set_to_display_plane(struct drm_i915_gem_object *obj,
+ struct intel_ring_buffer *pipelined)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
uint32_t old_read_domains;
int ret;
/* Not valid to be called on unbound objects. */
- if (obj_priv->gtt_space == NULL)
+ if (obj->gtt_space == NULL)
return -EINVAL;
ret = i915_gem_object_flush_gpu_write_domain(obj);
if (ret)
return ret;
+
/* Currently, we are always called from an non-interruptible context. */
- if (!pipelined) {
+ if (pipelined != obj->ring) {
ret = i915_gem_object_wait_rendering(obj, false);
if (ret)
return ret;
i915_gem_object_flush_cpu_write_domain(obj);
- old_read_domains = obj->read_domains;
- obj->read_domains |= I915_GEM_DOMAIN_GTT;
+ old_read_domains = obj->base.read_domains;
+ obj->base.read_domains |= I915_GEM_DOMAIN_GTT;
trace_i915_gem_object_change_domain(obj,
old_read_domains,
- obj->write_domain);
+ obj->base.write_domain);
return 0;
}
i915_gem_object_flush_gpu(struct drm_i915_gem_object *obj,
bool interruptible)
{
+ int ret;
+
if (!obj->active)
return 0;
- if (obj->base.write_domain & I915_GEM_GPU_DOMAINS)
- i915_gem_flush_ring(obj->base.dev, NULL, obj->ring,
- 0, obj->base.write_domain);
+ if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) {
+ ret = i915_gem_flush_ring(obj->base.dev, obj->ring,
+ 0, obj->base.write_domain);
+ if (ret)
+ return ret;
+ }
- return i915_gem_object_wait_rendering(&obj->base, interruptible);
+ return i915_gem_object_wait_rendering(obj, interruptible);
}
/**
* flushes to occur.
*/
static int
-i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write)
+i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write)
{
uint32_t old_write_domain, old_read_domains;
int ret;
ret = i915_gem_object_flush_gpu_write_domain(obj);
- if (ret != 0)
+ if (ret)
return ret;
+
ret = i915_gem_object_wait_rendering(obj, true);
if (ret)
return ret;
*/
i915_gem_object_set_to_full_cpu_read_domain(obj);
- old_write_domain = obj->write_domain;
- old_read_domains = obj->read_domains;
+ old_write_domain = obj->base.write_domain;
+ old_read_domains = obj->base.read_domains;
/* Flush the CPU cache if it's still invalid. */
- if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) {
+ if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) {
i915_gem_clflush_object(obj);
- obj->read_domains |= I915_GEM_DOMAIN_CPU;
+ obj->base.read_domains |= I915_GEM_DOMAIN_CPU;
}
/* It should now be out of any other write domains, and we can update
* the domain values for our changes.
*/
- BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0);
+ BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_CPU) != 0);
/* If we're writing through the CPU, then the GPU read domains will
* need to be invalidated at next use.
*/
if (write) {
- obj->read_domains = I915_GEM_DOMAIN_CPU;
- obj->write_domain = I915_GEM_DOMAIN_CPU;
+ obj->base.read_domains = I915_GEM_DOMAIN_CPU;
+ obj->base.write_domain = I915_GEM_DOMAIN_CPU;
}
trace_i915_gem_object_change_domain(obj,
return 0;
}
-/*
- * Set the next domain for the specified object. This
- * may not actually perform the necessary flushing/invaliding though,
- * as that may want to be batched with other set_domain operations
- *
- * This is (we hope) the only really tricky part of gem. The goal
- * is fairly simple -- track which caches hold bits of the object
- * and make sure they remain coherent. A few concrete examples may
- * help to explain how it works. For shorthand, we use the notation
- * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the
- * a pair of read and write domain masks.
- *
- * Case 1: the batch buffer
- *
- * 1. Allocated
- * 2. Written by CPU
- * 3. Mapped to GTT
- * 4. Read by GPU
- * 5. Unmapped from GTT
- * 6. Freed
- *
- * Let's take these a step at a time
- *
- * 1. Allocated
- * Pages allocated from the kernel may still have
- * cache contents, so we set them to (CPU, CPU) always.
- * 2. Written by CPU (using pwrite)
- * The pwrite function calls set_domain (CPU, CPU) and
- * this function does nothing (as nothing changes)
- * 3. Mapped by GTT
- * This function asserts that the object is not
- * currently in any GPU-based read or write domains
- * 4. Read by GPU
- * i915_gem_execbuffer calls set_domain (COMMAND, 0).
- * As write_domain is zero, this function adds in the
- * current read domains (CPU+COMMAND, 0).
- * flush_domains is set to CPU.
- * invalidate_domains is set to COMMAND
- * clflush is run to get data out of the CPU caches
- * then i915_dev_set_domain calls i915_gem_flush to
- * emit an MI_FLUSH and drm_agp_chipset_flush
- * 5. Unmapped from GTT
- * i915_gem_object_unbind calls set_domain (CPU, CPU)
- * flush_domains and invalidate_domains end up both zero
- * so no flushing/invalidating happens
- * 6. Freed
- * yay, done
- *
- * Case 2: The shared render buffer
- *
- * 1. Allocated
- * 2. Mapped to GTT
- * 3. Read/written by GPU
- * 4. set_domain to (CPU,CPU)
- * 5. Read/written by CPU
- * 6. Read/written by GPU
- *
- * 1. Allocated
- * Same as last example, (CPU, CPU)
- * 2. Mapped to GTT
- * Nothing changes (assertions find that it is not in the GPU)
- * 3. Read/written by GPU
- * execbuffer calls set_domain (RENDER, RENDER)
- * flush_domains gets CPU
- * invalidate_domains gets GPU
- * clflush (obj)
- * MI_FLUSH and drm_agp_chipset_flush
- * 4. set_domain (CPU, CPU)
- * flush_domains gets GPU
- * invalidate_domains gets CPU
- * wait_rendering (obj) to make sure all drawing is complete.
- * This will include an MI_FLUSH to get the data from GPU
- * to memory
- * clflush (obj) to invalidate the CPU cache
- * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?)
- * 5. Read/written by CPU
- * cache lines are loaded and dirtied
- * 6. Read written by GPU
- * Same as last GPU access
- *
- * Case 3: The constant buffer
- *
- * 1. Allocated
- * 2. Written by CPU
- * 3. Read by GPU
- * 4. Updated (written) by CPU again
- * 5. Read by GPU
- *
- * 1. Allocated
- * (CPU, CPU)
- * 2. Written by CPU
- * (CPU, CPU)
- * 3. Read by GPU
- * (CPU+RENDER, 0)
- * flush_domains = CPU
- * invalidate_domains = RENDER
- * clflush (obj)
- * MI_FLUSH
- * drm_agp_chipset_flush
- * 4. Updated (written) by CPU again
- * (CPU, CPU)
- * flush_domains = 0 (no previous write domain)
- * invalidate_domains = 0 (no new read domains)
- * 5. Read by GPU
- * (CPU+RENDER, 0)
- * flush_domains = CPU
- * invalidate_domains = RENDER
- * clflush (obj)
- * MI_FLUSH
- * drm_agp_chipset_flush
- */
-static void
-i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
- struct intel_ring_buffer *ring)
-{
- struct drm_device *dev = obj->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- uint32_t invalidate_domains = 0;
- uint32_t flush_domains = 0;
- uint32_t old_read_domains;
-
- intel_mark_busy(dev, obj);
-
- /*
- * If the object isn't moving to a new write domain,
- * let the object stay in multiple read domains
- */
- if (obj->pending_write_domain == 0)
- obj->pending_read_domains |= obj->read_domains;
- else
- obj_priv->dirty = 1;
-
- /*
- * Flush the current write domain if
- * the new read domains don't match. Invalidate
- * any read domains which differ from the old
- * write domain
- */
- if (obj->write_domain &&
- (obj->write_domain != obj->pending_read_domains ||
- obj_priv->ring != ring)) {
- flush_domains |= obj->write_domain;
- invalidate_domains |=
- obj->pending_read_domains & ~obj->write_domain;
- }
- /*
- * Invalidate any read caches which may have
- * stale data. That is, any new read domains.
- */
- invalidate_domains |= obj->pending_read_domains & ~obj->read_domains;
- if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU)
- i915_gem_clflush_object(obj);
-
- old_read_domains = obj->read_domains;
-
- /* The actual obj->write_domain will be updated with
- * pending_write_domain after we emit the accumulated flush for all
- * of our domain changes in execbuffers (which clears objects'
- * write_domains). So if we have a current write domain that we
- * aren't changing, set pending_write_domain to that.
- */
- if (flush_domains == 0 && obj->pending_write_domain == 0)
- obj->pending_write_domain = obj->write_domain;
- obj->read_domains = obj->pending_read_domains;
-
- dev->invalidate_domains |= invalidate_domains;
- dev->flush_domains |= flush_domains;
- if (flush_domains & I915_GEM_GPU_DOMAINS)
- dev_priv->mm.flush_rings |= obj_priv->ring->id;
- if (invalidate_domains & I915_GEM_GPU_DOMAINS)
- dev_priv->mm.flush_rings |= ring->id;
-
- trace_i915_gem_object_change_domain(obj,
- old_read_domains,
- obj->write_domain);
-}
-
/**
* Moves the object from a partially CPU read to a full one.
*
* and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU).
*/
static void
-i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj)
+i915_gem_object_set_to_full_cpu_read_domain(struct drm_i915_gem_object *obj)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
-
- if (!obj_priv->page_cpu_valid)
+ if (!obj->page_cpu_valid)
return;
/* If we're partially in the CPU read domain, finish moving it in.
*/
- if (obj->read_domains & I915_GEM_DOMAIN_CPU) {
+ if (obj->base.read_domains & I915_GEM_DOMAIN_CPU) {
int i;
- for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) {
- if (obj_priv->page_cpu_valid[i])
- continue;
- drm_clflush_pages(obj_priv->pages + i, 1);
- }
- }
-
- /* Free the page_cpu_valid mappings which are now stale, whether
- * or not we've got I915_GEM_DOMAIN_CPU.
- */
- kfree(obj_priv->page_cpu_valid);
- obj_priv->page_cpu_valid = NULL;
-}
-
-/**
- * Set the CPU read domain on a range of the object.
- *
- * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's
- * not entirely valid. The page_cpu_valid member of the object flags which
- * pages have been flushed, and will be respected by
- * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping
- * of the whole object.
- *
- * This function returns when the move is complete, including waiting on
- * flushes to occur.
- */
-static int
-i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj,
- uint64_t offset, uint64_t size)
-{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- uint32_t old_read_domains;
- int i, ret;
-
- if (offset == 0 && size == obj->size)
- return i915_gem_object_set_to_cpu_domain(obj, 0);
-
- ret = i915_gem_object_flush_gpu_write_domain(obj);
- if (ret != 0)
- return ret;
- ret = i915_gem_object_wait_rendering(obj, true);
- if (ret)
- return ret;
-
- i915_gem_object_flush_gtt_write_domain(obj);
-
- /* If we're already fully in the CPU read domain, we're done. */
- if (obj_priv->page_cpu_valid == NULL &&
- (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0)
- return 0;
-
- /* Otherwise, create/clear the per-page CPU read domain flag if we're
- * newly adding I915_GEM_DOMAIN_CPU
- */
- if (obj_priv->page_cpu_valid == NULL) {
- obj_priv->page_cpu_valid = kzalloc(obj->size / PAGE_SIZE,
- GFP_KERNEL);
- if (obj_priv->page_cpu_valid == NULL)
- return -ENOMEM;
- } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0)
- memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE);
-
- /* Flush the cache on any pages that are still invalid from the CPU's
- * perspective.
- */
- for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE;
- i++) {
- if (obj_priv->page_cpu_valid[i])
- continue;
-
- drm_clflush_pages(obj_priv->pages + i, 1);
-
- obj_priv->page_cpu_valid[i] = 1;
- }
-
- /* It should now be out of any other write domains, and we can update
- * the domain values for our changes.
- */
- BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0);
-
- old_read_domains = obj->read_domains;
- obj->read_domains |= I915_GEM_DOMAIN_CPU;
-
- trace_i915_gem_object_change_domain(obj,
- old_read_domains,
- obj->write_domain);
-
- return 0;
-}
-
-static int
-i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
- struct drm_file *file_priv,
- struct drm_i915_gem_exec_object2 *entry,
- struct drm_i915_gem_relocation_entry *reloc)
-{
- struct drm_device *dev = obj->base.dev;
- struct drm_gem_object *target_obj;
- uint32_t target_offset;
- int ret = -EINVAL;
-
- target_obj = drm_gem_object_lookup(dev, file_priv,
- reloc->target_handle);
- if (target_obj == NULL)
- return -ENOENT;
-
- target_offset = to_intel_bo(target_obj)->gtt_offset;
-
-#if WATCH_RELOC
- DRM_INFO("%s: obj %p offset %08x target %d "
- "read %08x write %08x gtt %08x "
- "presumed %08x delta %08x\n",
- __func__,
- obj,
- (int) reloc->offset,
- (int) reloc->target_handle,
- (int) reloc->read_domains,
- (int) reloc->write_domain,
- (int) target_offset,
- (int) reloc->presumed_offset,
- reloc->delta);
-#endif
-
- /* The target buffer should have appeared before us in the
- * exec_object list, so it should have a GTT space bound by now.
- */
- if (target_offset == 0) {
- DRM_ERROR("No GTT space found for object %d\n",
- reloc->target_handle);
- goto err;
- }
-
- /* Validate that the target is in a valid r/w GPU domain */
- if (reloc->write_domain & (reloc->write_domain - 1)) {
- DRM_ERROR("reloc with multiple write domains: "
- "obj %p target %d offset %d "
- "read %08x write %08x",
- obj, reloc->target_handle,
- (int) reloc->offset,
- reloc->read_domains,
- reloc->write_domain);
- goto err;
- }
- if (reloc->write_domain & I915_GEM_DOMAIN_CPU ||
- reloc->read_domains & I915_GEM_DOMAIN_CPU) {
- DRM_ERROR("reloc with read/write CPU domains: "
- "obj %p target %d offset %d "
- "read %08x write %08x",
- obj, reloc->target_handle,
- (int) reloc->offset,
- reloc->read_domains,
- reloc->write_domain);
- goto err;
- }
- if (reloc->write_domain && target_obj->pending_write_domain &&
- reloc->write_domain != target_obj->pending_write_domain) {
- DRM_ERROR("Write domain conflict: "
- "obj %p target %d offset %d "
- "new %08x old %08x\n",
- obj, reloc->target_handle,
- (int) reloc->offset,
- reloc->write_domain,
- target_obj->pending_write_domain);
- goto err;
- }
-
- target_obj->pending_read_domains |= reloc->read_domains;
- target_obj->pending_write_domain |= reloc->write_domain;
-
- /* If the relocation already has the right value in it, no
- * more work needs to be done.
- */
- if (target_offset == reloc->presumed_offset)
- goto out;
-
- /* Check that the relocation address is valid... */
- if (reloc->offset > obj->base.size - 4) {
- DRM_ERROR("Relocation beyond object bounds: "
- "obj %p target %d offset %d size %d.\n",
- obj, reloc->target_handle,
- (int) reloc->offset,
- (int) obj->base.size);
- goto err;
- }
- if (reloc->offset & 3) {
- DRM_ERROR("Relocation not 4-byte aligned: "
- "obj %p target %d offset %d.\n",
- obj, reloc->target_handle,
- (int) reloc->offset);
- goto err;
- }
-
- /* and points to somewhere within the target object. */
- if (reloc->delta >= target_obj->size) {
- DRM_ERROR("Relocation beyond target object bounds: "
- "obj %p target %d delta %d size %d.\n",
- obj, reloc->target_handle,
- (int) reloc->delta,
- (int) target_obj->size);
- goto err;
- }
-
- reloc->delta += target_offset;
- if (obj->base.write_domain == I915_GEM_DOMAIN_CPU) {
- uint32_t page_offset = reloc->offset & ~PAGE_MASK;
- char *vaddr;
-
- vaddr = kmap_atomic(obj->pages[reloc->offset >> PAGE_SHIFT]);
- *(uint32_t *)(vaddr + page_offset) = reloc->delta;
- kunmap_atomic(vaddr);
- } else {
- struct drm_i915_private *dev_priv = dev->dev_private;
- uint32_t __iomem *reloc_entry;
- void __iomem *reloc_page;
-
- ret = i915_gem_object_set_to_gtt_domain(&obj->base, 1);
- if (ret)
- goto err;
-
- /* Map the page containing the relocation we're going to perform. */
- reloc->offset += obj->gtt_offset;
- reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
- reloc->offset & PAGE_MASK);
- reloc_entry = (uint32_t __iomem *)
- (reloc_page + (reloc->offset & ~PAGE_MASK));
- iowrite32(reloc->delta, reloc_entry);
- io_mapping_unmap_atomic(reloc_page);
- }
-
- /* and update the user's relocation entry */
- reloc->presumed_offset = target_offset;
-
-out:
- ret = 0;
-err:
- drm_gem_object_unreference(target_obj);
- return ret;
-}
-
-static int
-i915_gem_execbuffer_relocate_object(struct drm_i915_gem_object *obj,
- struct drm_file *file_priv,
- struct drm_i915_gem_exec_object2 *entry)
-{
- struct drm_i915_gem_relocation_entry __user *user_relocs;
- int i, ret;
-
- user_relocs = (void __user *)(uintptr_t)entry->relocs_ptr;
- for (i = 0; i < entry->relocation_count; i++) {
- struct drm_i915_gem_relocation_entry reloc;
-
- if (__copy_from_user_inatomic(&reloc,
- user_relocs+i,
- sizeof(reloc)))
- return -EFAULT;
-
- ret = i915_gem_execbuffer_relocate_entry(obj, file_priv, entry, &reloc);
- if (ret)
- return ret;
-
- if (__copy_to_user_inatomic(&user_relocs[i].presumed_offset,
- &reloc.presumed_offset,
- sizeof(reloc.presumed_offset)))
- return -EFAULT;
- }
-
- return 0;
-}
-
-static int
-i915_gem_execbuffer_relocate_object_slow(struct drm_i915_gem_object *obj,
- struct drm_file *file_priv,
- struct drm_i915_gem_exec_object2 *entry,
- struct drm_i915_gem_relocation_entry *relocs)
-{
- int i, ret;
-
- for (i = 0; i < entry->relocation_count; i++) {
- ret = i915_gem_execbuffer_relocate_entry(obj, file_priv, entry, &relocs[i]);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static int
-i915_gem_execbuffer_relocate(struct drm_device *dev,
- struct drm_file *file,
- struct drm_gem_object **object_list,
- struct drm_i915_gem_exec_object2 *exec_list,
- int count)
-{
- int i, ret;
-
- for (i = 0; i < count; i++) {
- struct drm_i915_gem_object *obj = to_intel_bo(object_list[i]);
- obj->base.pending_read_domains = 0;
- obj->base.pending_write_domain = 0;
- ret = i915_gem_execbuffer_relocate_object(obj, file,
- &exec_list[i]);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static int
-i915_gem_execbuffer_reserve(struct drm_device *dev,
- struct drm_file *file,
- struct drm_gem_object **object_list,
- struct drm_i915_gem_exec_object2 *exec_list,
- int count)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- int ret, i, retry;
-
- /* attempt to pin all of the buffers into the GTT */
- for (retry = 0; retry < 2; retry++) {
- ret = 0;
- for (i = 0; i < count; i++) {
- struct drm_i915_gem_exec_object2 *entry = &exec_list[i];
- struct drm_i915_gem_object *obj= to_intel_bo(object_list[i]);
- bool need_fence =
- entry->flags & EXEC_OBJECT_NEEDS_FENCE &&
- obj->tiling_mode != I915_TILING_NONE;
-
- /* Check fence reg constraints and rebind if necessary */
- if (need_fence &&
- !i915_gem_object_fence_offset_ok(&obj->base,
- obj->tiling_mode)) {
- ret = i915_gem_object_unbind(&obj->base);
- if (ret)
- break;
- }
-
- ret = i915_gem_object_pin(&obj->base, entry->alignment);
- if (ret)
- break;
-
- /*
- * Pre-965 chips need a fence register set up in order
- * to properly handle blits to/from tiled surfaces.
- */
- if (need_fence) {
- ret = i915_gem_object_get_fence_reg(&obj->base, true);
- if (ret) {
- i915_gem_object_unpin(&obj->base);
- break;
- }
-
- dev_priv->fence_regs[obj->fence_reg].gpu = true;
- }
-
- entry->offset = obj->gtt_offset;
- }
-
- while (i--)
- i915_gem_object_unpin(object_list[i]);
-
- if (ret == 0)
- break;
-
- if (ret != -ENOSPC || retry)
- return ret;
-
- ret = i915_gem_evict_everything(dev);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static int
-i915_gem_execbuffer_relocate_slow(struct drm_device *dev,
- struct drm_file *file,
- struct drm_gem_object **object_list,
- struct drm_i915_gem_exec_object2 *exec_list,
- int count)
-{
- struct drm_i915_gem_relocation_entry *reloc;
- int i, total, ret;
-
- for (i = 0; i < count; i++) {
- struct drm_i915_gem_object *obj = to_intel_bo(object_list[i]);
- obj->in_execbuffer = false;
- }
-
- mutex_unlock(&dev->struct_mutex);
-
- total = 0;
- for (i = 0; i < count; i++)
- total += exec_list[i].relocation_count;
-
- reloc = drm_malloc_ab(total, sizeof(*reloc));
- if (reloc == NULL) {
- mutex_lock(&dev->struct_mutex);
- return -ENOMEM;
- }
-
- total = 0;
- for (i = 0; i < count; i++) {
- struct drm_i915_gem_relocation_entry __user *user_relocs;
-
- user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr;
-
- if (copy_from_user(reloc+total, user_relocs,
- exec_list[i].relocation_count *
- sizeof(*reloc))) {
- ret = -EFAULT;
- mutex_lock(&dev->struct_mutex);
- goto err;
- }
-
- total += exec_list[i].relocation_count;
- }
-
- ret = i915_mutex_lock_interruptible(dev);
- if (ret) {
- mutex_lock(&dev->struct_mutex);
- goto err;
- }
-
- ret = i915_gem_execbuffer_reserve(dev, file,
- object_list, exec_list,
- count);
- if (ret)
- goto err;
-
- total = 0;
- for (i = 0; i < count; i++) {
- struct drm_i915_gem_object *obj = to_intel_bo(object_list[i]);
- obj->base.pending_read_domains = 0;
- obj->base.pending_write_domain = 0;
- ret = i915_gem_execbuffer_relocate_object_slow(obj, file,
- &exec_list[i],
- reloc + total);
- if (ret)
- goto err;
-
- total += exec_list[i].relocation_count;
- }
-
- /* Leave the user relocations as are, this is the painfully slow path,
- * and we want to avoid the complication of dropping the lock whilst
- * having buffers reserved in the aperture and so causing spurious
- * ENOSPC for random operations.
- */
-
-err:
- drm_free_large(reloc);
- return ret;
-}
-
-static int
-i915_gem_execbuffer_move_to_gpu(struct drm_device *dev,
- struct drm_file *file,
- struct intel_ring_buffer *ring,
- struct drm_gem_object **objects,
- int count)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- int ret, i;
-
- /* Zero the global flush/invalidate flags. These
- * will be modified as new domains are computed
- * for each object
- */
- dev->invalidate_domains = 0;
- dev->flush_domains = 0;
- dev_priv->mm.flush_rings = 0;
- for (i = 0; i < count; i++)
- i915_gem_object_set_to_gpu_domain(objects[i], ring);
-
- if (dev->invalidate_domains | dev->flush_domains) {
-#if WATCH_EXEC
- DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n",
- __func__,
- dev->invalidate_domains,
- dev->flush_domains);
-#endif
- i915_gem_flush(dev, file,
- dev->invalidate_domains,
- dev->flush_domains,
- dev_priv->mm.flush_rings);
- }
-
- for (i = 0; i < count; i++) {
- struct drm_i915_gem_object *obj = to_intel_bo(objects[i]);
- /* XXX replace with semaphores */
- if (obj->ring && ring != obj->ring) {
- ret = i915_gem_object_wait_rendering(&obj->base, true);
- if (ret)
- return ret;
- }
- }
-
- return 0;
-}
-
-/* Throttle our rendering by waiting until the ring has completed our requests
- * emitted over 20 msec ago.
- *
- * Note that if we were to use the current jiffies each time around the loop,
- * we wouldn't escape the function with any frames outstanding if the time to
- * render a frame was over 20ms.
- *
- * This should get us reasonable parallelism between CPU and GPU but also
- * relatively low latency when blocking on a particular request to finish.
- */
-static int
-i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_file_private *file_priv = file->driver_priv;
- unsigned long recent_enough = jiffies - msecs_to_jiffies(20);
- struct drm_i915_gem_request *request;
- struct intel_ring_buffer *ring = NULL;
- u32 seqno = 0;
- int ret;
-
- spin_lock(&file_priv->mm.lock);
- list_for_each_entry(request, &file_priv->mm.request_list, client_list) {
- if (time_after_eq(request->emitted_jiffies, recent_enough))
- break;
-
- ring = request->ring;
- seqno = request->seqno;
- }
- spin_unlock(&file_priv->mm.lock);
-
- if (seqno == 0)
- return 0;
-
- ret = 0;
- if (!i915_seqno_passed(ring->get_seqno(dev, ring), seqno)) {
- /* And wait for the seqno passing without holding any locks and
- * causing extra latency for others. This is safe as the irq
- * generation is designed to be run atomically and so is
- * lockless.
- */
- ring->user_irq_get(dev, ring);
- ret = wait_event_interruptible(ring->irq_queue,
- i915_seqno_passed(ring->get_seqno(dev, ring), seqno)
- || atomic_read(&dev_priv->mm.wedged));
- ring->user_irq_put(dev, ring);
-
- if (ret == 0 && atomic_read(&dev_priv->mm.wedged))
- ret = -EIO;
- }
-
- if (ret == 0)
- queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0);
-
- return ret;
-}
-
-static int
-i915_gem_check_execbuffer(struct drm_i915_gem_execbuffer2 *exec,
- uint64_t exec_offset)
-{
- uint32_t exec_start, exec_len;
-
- exec_start = (uint32_t) exec_offset + exec->batch_start_offset;
- exec_len = (uint32_t) exec->batch_len;
-
- if ((exec_start | exec_len) & 0x7)
- return -EINVAL;
-
- if (!exec_start)
- return -EINVAL;
-
- return 0;
-}
-
-static int
-validate_exec_list(struct drm_i915_gem_exec_object2 *exec,
- int count)
-{
- int i;
-
- for (i = 0; i < count; i++) {
- char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr;
- int length; /* limited by fault_in_pages_readable() */
-
- /* First check for malicious input causing overflow */
- if (exec[i].relocation_count >
- INT_MAX / sizeof(struct drm_i915_gem_relocation_entry))
- return -EINVAL;
-
- length = exec[i].relocation_count *
- sizeof(struct drm_i915_gem_relocation_entry);
- if (!access_ok(VERIFY_READ, ptr, length))
- return -EFAULT;
-
- /* we may also need to update the presumed offsets */
- if (!access_ok(VERIFY_WRITE, ptr, length))
- return -EFAULT;
-
- if (fault_in_pages_readable(ptr, length))
- return -EFAULT;
- }
-
- return 0;
-}
-
-static int
-i915_gem_do_execbuffer(struct drm_device *dev, void *data,
- struct drm_file *file,
- struct drm_i915_gem_execbuffer2 *args,
- struct drm_i915_gem_exec_object2 *exec_list)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_gem_object **object_list = NULL;
- struct drm_gem_object *batch_obj;
- struct drm_i915_gem_object *obj_priv;
- struct drm_clip_rect *cliprects = NULL;
- struct drm_i915_gem_request *request = NULL;
- int ret, i, flips;
- uint64_t exec_offset;
-
- struct intel_ring_buffer *ring = NULL;
-
- ret = i915_gem_check_is_wedged(dev);
- if (ret)
- return ret;
-
- ret = validate_exec_list(exec_list, args->buffer_count);
- if (ret)
- return ret;
-
-#if WATCH_EXEC
- DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n",
- (int) args->buffers_ptr, args->buffer_count, args->batch_len);
-#endif
- switch (args->flags & I915_EXEC_RING_MASK) {
- case I915_EXEC_DEFAULT:
- case I915_EXEC_RENDER:
- ring = &dev_priv->render_ring;
- break;
- case I915_EXEC_BSD:
- if (!HAS_BSD(dev)) {
- DRM_ERROR("execbuf with invalid ring (BSD)\n");
- return -EINVAL;
- }
- ring = &dev_priv->bsd_ring;
- break;
- case I915_EXEC_BLT:
- if (!HAS_BLT(dev)) {
- DRM_ERROR("execbuf with invalid ring (BLT)\n");
- return -EINVAL;
- }
- ring = &dev_priv->blt_ring;
- break;
- default:
- DRM_ERROR("execbuf with unknown ring: %d\n",
- (int)(args->flags & I915_EXEC_RING_MASK));
- return -EINVAL;
- }
-
- if (args->buffer_count < 1) {
- DRM_ERROR("execbuf with %d buffers\n", args->buffer_count);
- return -EINVAL;
- }
- object_list = drm_malloc_ab(sizeof(*object_list), args->buffer_count);
- if (object_list == NULL) {
- DRM_ERROR("Failed to allocate object list for %d buffers\n",
- args->buffer_count);
- ret = -ENOMEM;
- goto pre_mutex_err;
- }
-
- if (args->num_cliprects != 0) {
- cliprects = kcalloc(args->num_cliprects, sizeof(*cliprects),
- GFP_KERNEL);
- if (cliprects == NULL) {
- ret = -ENOMEM;
- goto pre_mutex_err;
- }
-
- ret = copy_from_user(cliprects,
- (struct drm_clip_rect __user *)
- (uintptr_t) args->cliprects_ptr,
- sizeof(*cliprects) * args->num_cliprects);
- if (ret != 0) {
- DRM_ERROR("copy %d cliprects failed: %d\n",
- args->num_cliprects, ret);
- ret = -EFAULT;
- goto pre_mutex_err;
- }
- }
-
- request = kzalloc(sizeof(*request), GFP_KERNEL);
- if (request == NULL) {
- ret = -ENOMEM;
- goto pre_mutex_err;
- }
-
- ret = i915_mutex_lock_interruptible(dev);
- if (ret)
- goto pre_mutex_err;
-
- if (dev_priv->mm.suspended) {
- mutex_unlock(&dev->struct_mutex);
- ret = -EBUSY;
- goto pre_mutex_err;
- }
-
- /* Look up object handles */
- for (i = 0; i < args->buffer_count; i++) {
- object_list[i] = drm_gem_object_lookup(dev, file,
- exec_list[i].handle);
- if (object_list[i] == NULL) {
- DRM_ERROR("Invalid object handle %d at index %d\n",
- exec_list[i].handle, i);
- /* prevent error path from reading uninitialized data */
- args->buffer_count = i + 1;
- ret = -ENOENT;
- goto err;
- }
-
- obj_priv = to_intel_bo(object_list[i]);
- if (obj_priv->in_execbuffer) {
- DRM_ERROR("Object %p appears more than once in object list\n",
- object_list[i]);
- /* prevent error path from reading uninitialized data */
- args->buffer_count = i + 1;
- ret = -EINVAL;
- goto err;
- }
- obj_priv->in_execbuffer = true;
- }
-
- /* Move the objects en-masse into the GTT, evicting if necessary. */
- ret = i915_gem_execbuffer_reserve(dev, file,
- object_list, exec_list,
- args->buffer_count);
- if (ret)
- goto err;
-
- /* The objects are in their final locations, apply the relocations. */
- ret = i915_gem_execbuffer_relocate(dev, file,
- object_list, exec_list,
- args->buffer_count);
- if (ret) {
- if (ret == -EFAULT) {
- ret = i915_gem_execbuffer_relocate_slow(dev, file,
- object_list,
- exec_list,
- args->buffer_count);
- BUG_ON(!mutex_is_locked(&dev->struct_mutex));
- }
- if (ret)
- goto err;
- }
-
- /* Set the pending read domains for the batch buffer to COMMAND */
- batch_obj = object_list[args->buffer_count-1];
- if (batch_obj->pending_write_domain) {
- DRM_ERROR("Attempting to use self-modifying batch buffer\n");
- ret = -EINVAL;
- goto err;
- }
- batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND;
-
- /* Sanity check the batch buffer */
- exec_offset = to_intel_bo(batch_obj)->gtt_offset;
- ret = i915_gem_check_execbuffer(args, exec_offset);
- if (ret != 0) {
- DRM_ERROR("execbuf with invalid offset/length\n");
- goto err;
- }
-
- ret = i915_gem_execbuffer_move_to_gpu(dev, file, ring,
- object_list, args->buffer_count);
- if (ret)
- goto err;
-
- for (i = 0; i < args->buffer_count; i++) {
- struct drm_gem_object *obj = object_list[i];
- uint32_t old_write_domain = obj->write_domain;
- obj->write_domain = obj->pending_write_domain;
- trace_i915_gem_object_change_domain(obj,
- obj->read_domains,
- old_write_domain);
- }
-
-#if WATCH_COHERENCY
- for (i = 0; i < args->buffer_count; i++) {
- i915_gem_object_check_coherency(object_list[i],
- exec_list[i].handle);
- }
-#endif
-
-#if WATCH_EXEC
- i915_gem_dump_object(batch_obj,
- args->batch_len,
- __func__,
- ~0);
-#endif
-
- /* Check for any pending flips. As we only maintain a flip queue depth
- * of 1, we can simply insert a WAIT for the next display flip prior
- * to executing the batch and avoid stalling the CPU.
- */
- flips = 0;
- for (i = 0; i < args->buffer_count; i++) {
- if (object_list[i]->write_domain)
- flips |= atomic_read(&to_intel_bo(object_list[i])->pending_flip);
- }
- if (flips) {
- int plane, flip_mask;
-
- for (plane = 0; flips >> plane; plane++) {
- if (((flips >> plane) & 1) == 0)
- continue;
-
- if (plane)
- flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
- else
- flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
-
- intel_ring_begin(dev, ring, 2);
- intel_ring_emit(dev, ring,
- MI_WAIT_FOR_EVENT | flip_mask);
- intel_ring_emit(dev, ring, MI_NOOP);
- intel_ring_advance(dev, ring);
- }
- }
-
- /* Exec the batchbuffer */
- ret = ring->dispatch_gem_execbuffer(dev, ring, args,
- cliprects, exec_offset);
- if (ret) {
- DRM_ERROR("dispatch failed %d\n", ret);
- goto err;
+ for (i = 0; i <= (obj->base.size - 1) / PAGE_SIZE; i++) {
+ if (obj->page_cpu_valid[i])
+ continue;
+ drm_clflush_pages(obj->pages + i, 1);
+ }
}
- /*
- * Ensure that the commands in the batch buffer are
- * finished before the interrupt fires
+ /* Free the page_cpu_valid mappings which are now stale, whether
+ * or not we've got I915_GEM_DOMAIN_CPU.
*/
- i915_retire_commands(dev, ring);
+ kfree(obj->page_cpu_valid);
+ obj->page_cpu_valid = NULL;
+}
- for (i = 0; i < args->buffer_count; i++) {
- struct drm_gem_object *obj = object_list[i];
+/**
+ * Set the CPU read domain on a range of the object.
+ *
+ * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's
+ * not entirely valid. The page_cpu_valid member of the object flags which
+ * pages have been flushed, and will be respected by
+ * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping
+ * of the whole object.
+ *
+ * This function returns when the move is complete, including waiting on
+ * flushes to occur.
+ */
+static int
+i915_gem_object_set_cpu_read_domain_range(struct drm_i915_gem_object *obj,
+ uint64_t offset, uint64_t size)
+{
+ uint32_t old_read_domains;
+ int i, ret;
- i915_gem_object_move_to_active(obj, ring);
- if (obj->write_domain)
- list_move_tail(&to_intel_bo(obj)->gpu_write_list,
- &ring->gpu_write_list);
- }
+ if (offset == 0 && size == obj->base.size)
+ return i915_gem_object_set_to_cpu_domain(obj, 0);
- i915_add_request(dev, file, request, ring);
- request = NULL;
+ ret = i915_gem_object_flush_gpu_write_domain(obj);
+ if (ret)
+ return ret;
-err:
- for (i = 0; i < args->buffer_count; i++) {
- if (object_list[i]) {
- obj_priv = to_intel_bo(object_list[i]);
- obj_priv->in_execbuffer = false;
- }
- drm_gem_object_unreference(object_list[i]);
- }
+ ret = i915_gem_object_wait_rendering(obj, true);
+ if (ret)
+ return ret;
- mutex_unlock(&dev->struct_mutex);
+ i915_gem_object_flush_gtt_write_domain(obj);
-pre_mutex_err:
- drm_free_large(object_list);
- kfree(cliprects);
- kfree(request);
+ /* If we're already fully in the CPU read domain, we're done. */
+ if (obj->page_cpu_valid == NULL &&
+ (obj->base.read_domains & I915_GEM_DOMAIN_CPU) != 0)
+ return 0;
- return ret;
-}
+ /* Otherwise, create/clear the per-page CPU read domain flag if we're
+ * newly adding I915_GEM_DOMAIN_CPU
+ */
+ if (obj->page_cpu_valid == NULL) {
+ obj->page_cpu_valid = kzalloc(obj->base.size / PAGE_SIZE,
+ GFP_KERNEL);
+ if (obj->page_cpu_valid == NULL)
+ return -ENOMEM;
+ } else if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0)
+ memset(obj->page_cpu_valid, 0, obj->base.size / PAGE_SIZE);
-/*
- * Legacy execbuffer just creates an exec2 list from the original exec object
- * list array and passes it to the real function.
- */
-int
-i915_gem_execbuffer(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_i915_gem_execbuffer *args = data;
- struct drm_i915_gem_execbuffer2 exec2;
- struct drm_i915_gem_exec_object *exec_list = NULL;
- struct drm_i915_gem_exec_object2 *exec2_list = NULL;
- int ret, i;
+ /* Flush the cache on any pages that are still invalid from the CPU's
+ * perspective.
+ */
+ for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE;
+ i++) {
+ if (obj->page_cpu_valid[i])
+ continue;
-#if WATCH_EXEC
- DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n",
- (int) args->buffers_ptr, args->buffer_count, args->batch_len);
-#endif
+ drm_clflush_pages(obj->pages + i, 1);
- if (args->buffer_count < 1) {
- DRM_ERROR("execbuf with %d buffers\n", args->buffer_count);
- return -EINVAL;
+ obj->page_cpu_valid[i] = 1;
}
- /* Copy in the exec list from userland */
- exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count);
- exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count);
- if (exec_list == NULL || exec2_list == NULL) {
- DRM_ERROR("Failed to allocate exec list for %d buffers\n",
- args->buffer_count);
- drm_free_large(exec_list);
- drm_free_large(exec2_list);
- return -ENOMEM;
- }
- ret = copy_from_user(exec_list,
- (struct drm_i915_relocation_entry __user *)
- (uintptr_t) args->buffers_ptr,
- sizeof(*exec_list) * args->buffer_count);
- if (ret != 0) {
- DRM_ERROR("copy %d exec entries failed %d\n",
- args->buffer_count, ret);
- drm_free_large(exec_list);
- drm_free_large(exec2_list);
- return -EFAULT;
- }
+ /* It should now be out of any other write domains, and we can update
+ * the domain values for our changes.
+ */
+ BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_CPU) != 0);
- for (i = 0; i < args->buffer_count; i++) {
- exec2_list[i].handle = exec_list[i].handle;
- exec2_list[i].relocation_count = exec_list[i].relocation_count;
- exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr;
- exec2_list[i].alignment = exec_list[i].alignment;
- exec2_list[i].offset = exec_list[i].offset;
- if (INTEL_INFO(dev)->gen < 4)
- exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE;
- else
- exec2_list[i].flags = 0;
- }
+ old_read_domains = obj->base.read_domains;
+ obj->base.read_domains |= I915_GEM_DOMAIN_CPU;
- exec2.buffers_ptr = args->buffers_ptr;
- exec2.buffer_count = args->buffer_count;
- exec2.batch_start_offset = args->batch_start_offset;
- exec2.batch_len = args->batch_len;
- exec2.DR1 = args->DR1;
- exec2.DR4 = args->DR4;
- exec2.num_cliprects = args->num_cliprects;
- exec2.cliprects_ptr = args->cliprects_ptr;
- exec2.flags = I915_EXEC_RENDER;
-
- ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list);
- if (!ret) {
- /* Copy the new buffer offsets back to the user's exec list. */
- for (i = 0; i < args->buffer_count; i++)
- exec_list[i].offset = exec2_list[i].offset;
- /* ... and back out to userspace */
- ret = copy_to_user((struct drm_i915_relocation_entry __user *)
- (uintptr_t) args->buffers_ptr,
- exec_list,
- sizeof(*exec_list) * args->buffer_count);
- if (ret) {
- ret = -EFAULT;
- DRM_ERROR("failed to copy %d exec entries "
- "back to user (%d)\n",
- args->buffer_count, ret);
- }
- }
+ trace_i915_gem_object_change_domain(obj,
+ old_read_domains,
+ obj->base.write_domain);
- drm_free_large(exec_list);
- drm_free_large(exec2_list);
- return ret;
+ return 0;
}
-int
-i915_gem_execbuffer2(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+/* Throttle our rendering by waiting until the ring has completed our requests
+ * emitted over 20 msec ago.
+ *
+ * Note that if we were to use the current jiffies each time around the loop,
+ * we wouldn't escape the function with any frames outstanding if the time to
+ * render a frame was over 20ms.
+ *
+ * This should get us reasonable parallelism between CPU and GPU but also
+ * relatively low latency when blocking on a particular request to finish.
+ */
+static int
+i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file)
{
- struct drm_i915_gem_execbuffer2 *args = data;
- struct drm_i915_gem_exec_object2 *exec2_list = NULL;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_file_private *file_priv = file->driver_priv;
+ unsigned long recent_enough = jiffies - msecs_to_jiffies(20);
+ struct drm_i915_gem_request *request;
+ struct intel_ring_buffer *ring = NULL;
+ u32 seqno = 0;
int ret;
-#if WATCH_EXEC
- DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n",
- (int) args->buffers_ptr, args->buffer_count, args->batch_len);
-#endif
+ spin_lock(&file_priv->mm.lock);
+ list_for_each_entry(request, &file_priv->mm.request_list, client_list) {
+ if (time_after_eq(request->emitted_jiffies, recent_enough))
+ break;
- if (args->buffer_count < 1) {
- DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count);
- return -EINVAL;
+ ring = request->ring;
+ seqno = request->seqno;
}
+ spin_unlock(&file_priv->mm.lock);
- exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count);
- if (exec2_list == NULL) {
- DRM_ERROR("Failed to allocate exec list for %d buffers\n",
- args->buffer_count);
- return -ENOMEM;
- }
- ret = copy_from_user(exec2_list,
- (struct drm_i915_relocation_entry __user *)
- (uintptr_t) args->buffers_ptr,
- sizeof(*exec2_list) * args->buffer_count);
- if (ret != 0) {
- DRM_ERROR("copy %d exec entries failed %d\n",
- args->buffer_count, ret);
- drm_free_large(exec2_list);
- return -EFAULT;
- }
+ if (seqno == 0)
+ return 0;
- ret = i915_gem_do_execbuffer(dev, data, file_priv, args, exec2_list);
- if (!ret) {
- /* Copy the new buffer offsets back to the user's exec list. */
- ret = copy_to_user((struct drm_i915_relocation_entry __user *)
- (uintptr_t) args->buffers_ptr,
- exec2_list,
- sizeof(*exec2_list) * args->buffer_count);
- if (ret) {
- ret = -EFAULT;
- DRM_ERROR("failed to copy %d exec entries "
- "back to user (%d)\n",
- args->buffer_count, ret);
+ ret = 0;
+ if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) {
+ /* And wait for the seqno passing without holding any locks and
+ * causing extra latency for others. This is safe as the irq
+ * generation is designed to be run atomically and so is
+ * lockless.
+ */
+ if (ring->irq_get(ring)) {
+ ret = wait_event_interruptible(ring->irq_queue,
+ i915_seqno_passed(ring->get_seqno(ring), seqno)
+ || atomic_read(&dev_priv->mm.wedged));
+ ring->irq_put(ring);
+
+ if (ret == 0 && atomic_read(&dev_priv->mm.wedged))
+ ret = -EIO;
}
}
- drm_free_large(exec2_list);
+ if (ret == 0)
+ queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0);
+
return ret;
}
int
-i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment)
+i915_gem_object_pin(struct drm_i915_gem_object *obj,
+ uint32_t alignment,
+ bool map_and_fenceable)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
int ret;
- BUG_ON(obj_priv->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT);
+ BUG_ON(obj->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT);
WARN_ON(i915_verify_lists(dev));
- if (obj_priv->gtt_space != NULL) {
- if (alignment == 0)
- alignment = i915_gem_get_gtt_alignment(obj);
- if (obj_priv->gtt_offset & (alignment - 1)) {
- WARN(obj_priv->pin_count,
- "bo is already pinned with incorrect alignment: offset=%x, req.alignment=%x\n",
- obj_priv->gtt_offset, alignment);
+ if (obj->gtt_space != NULL) {
+ if ((alignment && obj->gtt_offset & (alignment - 1)) ||
+ (map_and_fenceable && !obj->map_and_fenceable)) {
+ WARN(obj->pin_count,
+ "bo is already pinned with incorrect alignment:"
+ " offset=%x, req.alignment=%x, req.map_and_fenceable=%d,"
+ " obj->map_and_fenceable=%d\n",
+ obj->gtt_offset, alignment,
+ map_and_fenceable,
+ obj->map_and_fenceable);
ret = i915_gem_object_unbind(obj);
if (ret)
return ret;
}
}
- if (obj_priv->gtt_space == NULL) {
- ret = i915_gem_object_bind_to_gtt(obj, alignment);
+ if (obj->gtt_space == NULL) {
+ ret = i915_gem_object_bind_to_gtt(obj, alignment,
+ map_and_fenceable);
if (ret)
return ret;
}
- obj_priv->pin_count++;
-
- /* If the object is not active and not pending a flush,
- * remove it from the inactive list
- */
- if (obj_priv->pin_count == 1) {
- i915_gem_info_add_pin(dev_priv, obj->size);
- if (!obj_priv->active)
- list_move_tail(&obj_priv->mm_list,
+ if (obj->pin_count++ == 0) {
+ if (!obj->active)
+ list_move_tail(&obj->mm_list,
&dev_priv->mm.pinned_list);
}
+ obj->pin_mappable |= map_and_fenceable;
WARN_ON(i915_verify_lists(dev));
return 0;
}
void
-i915_gem_object_unpin(struct drm_gem_object *obj)
+i915_gem_object_unpin(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
WARN_ON(i915_verify_lists(dev));
- obj_priv->pin_count--;
- BUG_ON(obj_priv->pin_count < 0);
- BUG_ON(obj_priv->gtt_space == NULL);
+ BUG_ON(obj->pin_count == 0);
+ BUG_ON(obj->gtt_space == NULL);
- /* If the object is no longer pinned, and is
- * neither active nor being flushed, then stick it on
- * the inactive list
- */
- if (obj_priv->pin_count == 0) {
- if (!obj_priv->active)
- list_move_tail(&obj_priv->mm_list,
+ if (--obj->pin_count == 0) {
+ if (!obj->active)
+ list_move_tail(&obj->mm_list,
&dev_priv->mm.inactive_list);
- i915_gem_info_remove_pin(dev_priv, obj->size);
+ obj->pin_mappable = false;
}
WARN_ON(i915_verify_lists(dev));
}
int
i915_gem_pin_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_gem_pin *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int ret;
ret = i915_mutex_lock_interruptible(dev);
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
- if (obj_priv->madv != I915_MADV_WILLNEED) {
+ if (obj->madv != I915_MADV_WILLNEED) {
DRM_ERROR("Attempting to pin a purgeable buffer\n");
ret = -EINVAL;
goto out;
}
- if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) {
+ if (obj->pin_filp != NULL && obj->pin_filp != file) {
DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n",
args->handle);
ret = -EINVAL;
goto out;
}
- obj_priv->user_pin_count++;
- obj_priv->pin_filp = file_priv;
- if (obj_priv->user_pin_count == 1) {
- ret = i915_gem_object_pin(obj, args->alignment);
+ obj->user_pin_count++;
+ obj->pin_filp = file;
+ if (obj->user_pin_count == 1) {
+ ret = i915_gem_object_pin(obj, args->alignment, true);
if (ret)
goto out;
}
* as the X server doesn't manage domains yet
*/
i915_gem_object_flush_cpu_write_domain(obj);
- args->offset = obj_priv->gtt_offset;
+ args->offset = obj->gtt_offset;
out:
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
int
i915_gem_unpin_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_gem_pin *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int ret;
ret = i915_mutex_lock_interruptible(dev);
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
- if (obj_priv->pin_filp != file_priv) {
+ if (obj->pin_filp != file) {
DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n",
args->handle);
ret = -EINVAL;
goto out;
}
- obj_priv->user_pin_count--;
- if (obj_priv->user_pin_count == 0) {
- obj_priv->pin_filp = NULL;
+ obj->user_pin_count--;
+ if (obj->user_pin_count == 0) {
+ obj->pin_filp = NULL;
i915_gem_object_unpin(obj);
}
out:
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
int
i915_gem_busy_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
+ struct drm_file *file)
{
struct drm_i915_gem_busy *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int ret;
ret = i915_mutex_lock_interruptible(dev);
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
/* Count all active objects as busy, even if they are currently not used
* by the gpu. Users of this interface expect objects to eventually
* become non-busy without any further actions, therefore emit any
* necessary flushes here.
*/
- args->busy = obj_priv->active;
+ args->busy = obj->active;
if (args->busy) {
/* Unconditionally flush objects, even when the gpu still uses this
* object. Userspace calling this function indicates that it wants to
* use this buffer rather sooner than later, so issuing the required
* flush earlier is beneficial.
*/
- if (obj->write_domain & I915_GEM_GPU_DOMAINS) {
- i915_gem_flush_ring(dev, file_priv,
- obj_priv->ring,
- 0, obj->write_domain);
- } else if (obj_priv->ring->outstanding_lazy_request) {
+ if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) {
+ ret = i915_gem_flush_ring(dev, obj->ring,
+ 0, obj->base.write_domain);
+ } else if (obj->ring->outstanding_lazy_request ==
+ obj->last_rendering_seqno) {
+ struct drm_i915_gem_request *request;
+
/* This ring is not being cleared by active usage,
* so emit a request to do so.
*/
- u32 seqno = i915_add_request(dev,
- NULL, NULL,
- obj_priv->ring);
- if (seqno == 0)
+ request = kzalloc(sizeof(*request), GFP_KERNEL);
+ if (request)
+ ret = i915_add_request(dev,
+ NULL, request,
+ obj->ring);
+ else
ret = -ENOMEM;
}
* are actually unmasked, and our working set ends up being
* larger than required.
*/
- i915_gem_retire_requests_ring(dev, obj_priv->ring);
+ i915_gem_retire_requests_ring(dev, obj->ring);
- args->busy = obj_priv->active;
+ args->busy = obj->active;
}
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
struct drm_file *file_priv)
{
struct drm_i915_gem_madvise *args = data;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
+ struct drm_i915_gem_object *obj;
int ret;
switch (args->madv) {
if (ret)
return ret;
- obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+ obj = to_intel_bo(drm_gem_object_lookup(dev, file_priv, args->handle));
if (obj == NULL) {
ret = -ENOENT;
goto unlock;
}
- obj_priv = to_intel_bo(obj);
- if (obj_priv->pin_count) {
+ if (obj->pin_count) {
ret = -EINVAL;
goto out;
}
- if (obj_priv->madv != __I915_MADV_PURGED)
- obj_priv->madv = args->madv;
+ if (obj->madv != __I915_MADV_PURGED)
+ obj->madv = args->madv;
/* if the object is no longer bound, discard its backing storage */
- if (i915_gem_object_is_purgeable(obj_priv) &&
- obj_priv->gtt_space == NULL)
+ if (i915_gem_object_is_purgeable(obj) &&
+ obj->gtt_space == NULL)
i915_gem_object_truncate(obj);
- args->retained = obj_priv->madv != __I915_MADV_PURGED;
+ args->retained = obj->madv != __I915_MADV_PURGED;
out:
- drm_gem_object_unreference(obj);
+ drm_gem_object_unreference(&obj->base);
unlock:
mutex_unlock(&dev->struct_mutex);
return ret;
}
-struct drm_gem_object * i915_gem_alloc_object(struct drm_device *dev,
- size_t size)
+struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev,
+ size_t size)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj;
obj->base.driver_private = NULL;
obj->fence_reg = I915_FENCE_REG_NONE;
INIT_LIST_HEAD(&obj->mm_list);
+ INIT_LIST_HEAD(&obj->gtt_list);
INIT_LIST_HEAD(&obj->ring_list);
+ INIT_LIST_HEAD(&obj->exec_list);
INIT_LIST_HEAD(&obj->gpu_write_list);
obj->madv = I915_MADV_WILLNEED;
+ /* Avoid an unnecessary call to unbind on the first bind. */
+ obj->map_and_fenceable = true;
- return &obj->base;
+ return obj;
}
int i915_gem_init_object(struct drm_gem_object *obj)
return 0;
}
-static void i915_gem_free_object_tail(struct drm_gem_object *obj)
+static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj)
{
- struct drm_device *dev = obj->dev;
+ struct drm_device *dev = obj->base.dev;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
int ret;
ret = i915_gem_object_unbind(obj);
if (ret == -ERESTARTSYS) {
- list_move(&obj_priv->mm_list,
+ list_move(&obj->mm_list,
&dev_priv->mm.deferred_free_list);
return;
}
- if (obj_priv->mmap_offset)
+ if (obj->base.map_list.map)
i915_gem_free_mmap_offset(obj);
- drm_gem_object_release(obj);
- i915_gem_info_remove_obj(dev_priv, obj->size);
+ drm_gem_object_release(&obj->base);
+ i915_gem_info_remove_obj(dev_priv, obj->base.size);
- kfree(obj_priv->page_cpu_valid);
- kfree(obj_priv->bit_17);
- kfree(obj_priv);
+ kfree(obj->page_cpu_valid);
+ kfree(obj->bit_17);
+ kfree(obj);
}
-void i915_gem_free_object(struct drm_gem_object *obj)
+void i915_gem_free_object(struct drm_gem_object *gem_obj)
{
- struct drm_device *dev = obj->dev;
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+ struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
+ struct drm_device *dev = obj->base.dev;
trace_i915_gem_object_destroy(obj);
- while (obj_priv->pin_count > 0)
+ while (obj->pin_count > 0)
i915_gem_object_unpin(obj);
- if (obj_priv->phys_obj)
+ if (obj->phys_obj)
i915_gem_detach_phys_object(dev, obj);
i915_gem_free_object_tail(obj);
/* Under UMS, be paranoid and evict. */
if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
- ret = i915_gem_evict_inactive(dev);
+ ret = i915_gem_evict_inactive(dev, false);
if (ret) {
mutex_unlock(&dev->struct_mutex);
return ret;
}
}
+ i915_gem_reset_fences(dev);
+
/* Hack! Don't let anybody do execbuf while we don't control the chip.
* We need to replace this with a semaphore, or something.
* And not confound mm.suspended!
return 0;
}
-/*
- * 965+ support PIPE_CONTROL commands, which provide finer grained control
- * over cache flushing.
- */
-static int
-i915_gem_init_pipe_control(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
- int ret;
-
- obj = i915_gem_alloc_object(dev, 4096);
- if (obj == NULL) {
- DRM_ERROR("Failed to allocate seqno page\n");
- ret = -ENOMEM;
- goto err;
- }
- obj_priv = to_intel_bo(obj);
- obj_priv->agp_type = AGP_USER_CACHED_MEMORY;
-
- ret = i915_gem_object_pin(obj, 4096);
- if (ret)
- goto err_unref;
-
- dev_priv->seqno_gfx_addr = obj_priv->gtt_offset;
- dev_priv->seqno_page = kmap(obj_priv->pages[0]);
- if (dev_priv->seqno_page == NULL)
- goto err_unpin;
-
- dev_priv->seqno_obj = obj;
- memset(dev_priv->seqno_page, 0, PAGE_SIZE);
-
- return 0;
-
-err_unpin:
- i915_gem_object_unpin(obj);
-err_unref:
- drm_gem_object_unreference(obj);
-err:
- return ret;
-}
-
-
-static void
-i915_gem_cleanup_pipe_control(struct drm_device *dev)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_gem_object *obj;
- struct drm_i915_gem_object *obj_priv;
-
- obj = dev_priv->seqno_obj;
- obj_priv = to_intel_bo(obj);
- kunmap(obj_priv->pages[0]);
- i915_gem_object_unpin(obj);
- drm_gem_object_unreference(obj);
- dev_priv->seqno_obj = NULL;
-
- dev_priv->seqno_page = NULL;
-}
-
int
i915_gem_init_ringbuffer(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
int ret;
- if (HAS_PIPE_CONTROL(dev)) {
- ret = i915_gem_init_pipe_control(dev);
- if (ret)
- return ret;
- }
-
ret = intel_init_render_ring_buffer(dev);
if (ret)
- goto cleanup_pipe_control;
+ return ret;
if (HAS_BSD(dev)) {
ret = intel_init_bsd_ring_buffer(dev);
return 0;
cleanup_bsd_ring:
- intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring);
+ intel_cleanup_ring_buffer(&dev_priv->ring[VCS]);
cleanup_render_ring:
- intel_cleanup_ring_buffer(dev, &dev_priv->render_ring);
-cleanup_pipe_control:
- if (HAS_PIPE_CONTROL(dev))
- i915_gem_cleanup_pipe_control(dev);
+ intel_cleanup_ring_buffer(&dev_priv->ring[RCS]);
return ret;
}
i915_gem_cleanup_ringbuffer(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
+ int i;
- intel_cleanup_ring_buffer(dev, &dev_priv->render_ring);
- intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring);
- intel_cleanup_ring_buffer(dev, &dev_priv->blt_ring);
- if (HAS_PIPE_CONTROL(dev))
- i915_gem_cleanup_pipe_control(dev);
+ for (i = 0; i < I915_NUM_RINGS; i++)
+ intel_cleanup_ring_buffer(&dev_priv->ring[i]);
}
int
struct drm_file *file_priv)
{
drm_i915_private_t *dev_priv = dev->dev_private;
- int ret;
+ int ret, i;
if (drm_core_check_feature(dev, DRIVER_MODESET))
return 0;
}
BUG_ON(!list_empty(&dev_priv->mm.active_list));
- BUG_ON(!list_empty(&dev_priv->render_ring.active_list));
- BUG_ON(!list_empty(&dev_priv->bsd_ring.active_list));
- BUG_ON(!list_empty(&dev_priv->blt_ring.active_list));
BUG_ON(!list_empty(&dev_priv->mm.flushing_list));
BUG_ON(!list_empty(&dev_priv->mm.inactive_list));
- BUG_ON(!list_empty(&dev_priv->render_ring.request_list));
- BUG_ON(!list_empty(&dev_priv->bsd_ring.request_list));
- BUG_ON(!list_empty(&dev_priv->blt_ring.request_list));
+ for (i = 0; i < I915_NUM_RINGS; i++) {
+ BUG_ON(!list_empty(&dev_priv->ring[i].active_list));
+ BUG_ON(!list_empty(&dev_priv->ring[i].request_list));
+ }
mutex_unlock(&dev->struct_mutex);
ret = drm_irq_install(dev);
INIT_LIST_HEAD(&dev_priv->mm.pinned_list);
INIT_LIST_HEAD(&dev_priv->mm.fence_list);
INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list);
- init_ring_lists(&dev_priv->render_ring);
- init_ring_lists(&dev_priv->bsd_ring);
- init_ring_lists(&dev_priv->blt_ring);
+ INIT_LIST_HEAD(&dev_priv->mm.gtt_list);
+ for (i = 0; i < I915_NUM_RINGS; i++)
+ init_ring_lists(&dev_priv->ring[i]);
for (i = 0; i < 16; i++)
INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list);
INIT_DELAYED_WORK(&dev_priv->mm.retire_work,
i915_gem_retire_work_handler);
init_completion(&dev_priv->error_completion);
- spin_lock(&shrink_list_lock);
- list_add(&dev_priv->mm.shrink_list, &shrink_list);
- spin_unlock(&shrink_list_lock);
/* On GEN3 we really need to make sure the ARB C3 LP bit is set */
if (IS_GEN3(dev)) {
}
}
+ dev_priv->relative_constants_mode = I915_EXEC_CONSTANTS_REL_GENERAL;
+
/* Old X drivers will take 0-2 for front, back, depth buffers */
if (!drm_core_check_feature(dev, DRIVER_MODESET))
dev_priv->fence_reg_start = 3;
}
i915_gem_detect_bit_6_swizzle(dev);
init_waitqueue_head(&dev_priv->pending_flip_queue);
+
+ dev_priv->mm.inactive_shrinker.shrink = i915_gem_inactive_shrink;
+ dev_priv->mm.inactive_shrinker.seeks = DEFAULT_SEEKS;
+ register_shrinker(&dev_priv->mm.inactive_shrinker);
}
/*
}
void i915_gem_detach_phys_object(struct drm_device *dev,
- struct drm_gem_object *obj)
+ struct drm_i915_gem_object *obj)
{
- struct drm_i915_gem_object *obj_priv;
+ struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping;
+ char *vaddr;
int i;
- int ret;
int page_count;
- obj_priv = to_intel_bo(obj);
- if (!obj_priv->phys_obj)
+ if (!obj->phys_obj)
return;
+ vaddr = obj->phys_obj->handle->vaddr;
- ret = i915_gem_object_get_pages(obj, 0);
- if (ret)
- goto out;
-
- page_count = obj->size / PAGE_SIZE;
-
+ page_count = obj->base.size / PAGE_SIZE;
for (i = 0; i < page_count; i++) {
- char *dst = kmap_atomic(obj_priv->pages[i]);
- char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE);
-
- memcpy(dst, src, PAGE_SIZE);
- kunmap_atomic(dst);
+ struct page *page = read_cache_page_gfp(mapping, i,
+ GFP_HIGHUSER | __GFP_RECLAIMABLE);
+ if (!IS_ERR(page)) {
+ char *dst = kmap_atomic(page);
+ memcpy(dst, vaddr + i*PAGE_SIZE, PAGE_SIZE);
+ kunmap_atomic(dst);
+
+ drm_clflush_pages(&page, 1);
+
+ set_page_dirty(page);
+ mark_page_accessed(page);
+ page_cache_release(page);
+ }
}
- drm_clflush_pages(obj_priv->pages, page_count);
- drm_agp_chipset_flush(dev);
+ intel_gtt_chipset_flush();
- i915_gem_object_put_pages(obj);
-out:
- obj_priv->phys_obj->cur_obj = NULL;
- obj_priv->phys_obj = NULL;
+ obj->phys_obj->cur_obj = NULL;
+ obj->phys_obj = NULL;
}
int
i915_gem_attach_phys_object(struct drm_device *dev,
- struct drm_gem_object *obj,
+ struct drm_i915_gem_object *obj,
int id,
int align)
{
+ struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping;
drm_i915_private_t *dev_priv = dev->dev_private;
- struct drm_i915_gem_object *obj_priv;
int ret = 0;
int page_count;
int i;
if (id > I915_MAX_PHYS_OBJECT)
return -EINVAL;
- obj_priv = to_intel_bo(obj);
-
- if (obj_priv->phys_obj) {
- if (obj_priv->phys_obj->id == id)
+ if (obj->phys_obj) {
+ if (obj->phys_obj->id == id)
return 0;
i915_gem_detach_phys_object(dev, obj);
}
/* create a new object */
if (!dev_priv->mm.phys_objs[id - 1]) {
ret = i915_gem_init_phys_object(dev, id,
- obj->size, align);
+ obj->base.size, align);
if (ret) {
- DRM_ERROR("failed to init phys object %d size: %zu\n", id, obj->size);
- goto out;
+ DRM_ERROR("failed to init phys object %d size: %zu\n",
+ id, obj->base.size);
+ return ret;
}
}
/* bind to the object */
- obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1];
- obj_priv->phys_obj->cur_obj = obj;
-
- ret = i915_gem_object_get_pages(obj, 0);
- if (ret) {
- DRM_ERROR("failed to get page list\n");
- goto out;
- }
+ obj->phys_obj = dev_priv->mm.phys_objs[id - 1];
+ obj->phys_obj->cur_obj = obj;
- page_count = obj->size / PAGE_SIZE;
+ page_count = obj->base.size / PAGE_SIZE;
for (i = 0; i < page_count; i++) {
- char *src = kmap_atomic(obj_priv->pages[i]);
- char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE);
+ struct page *page;
+ char *dst, *src;
+
+ page = read_cache_page_gfp(mapping, i,
+ GFP_HIGHUSER | __GFP_RECLAIMABLE);
+ if (IS_ERR(page))
+ return PTR_ERR(page);
+ src = kmap_atomic(page);
+ dst = obj->phys_obj->handle->vaddr + (i * PAGE_SIZE);
memcpy(dst, src, PAGE_SIZE);
kunmap_atomic(src);
- }
- i915_gem_object_put_pages(obj);
+ mark_page_accessed(page);
+ page_cache_release(page);
+ }
return 0;
-out:
- return ret;
}
static int
-i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj,
+i915_gem_phys_pwrite(struct drm_device *dev,
+ struct drm_i915_gem_object *obj,
struct drm_i915_gem_pwrite *args,
struct drm_file *file_priv)
{
- struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
- void *vaddr = obj_priv->phys_obj->handle->vaddr + args->offset;
+ void *vaddr = obj->phys_obj->handle->vaddr + args->offset;
char __user *user_data = (char __user *) (uintptr_t) args->data_ptr;
- DRM_DEBUG_DRIVER("vaddr %p, %lld\n", vaddr, args->size);
-
if (__copy_from_user_inatomic_nocache(vaddr, user_data, args->size)) {
unsigned long unwritten;
return -EFAULT;
}
- drm_agp_chipset_flush(dev);
+ intel_gtt_chipset_flush();
return 0;
}
}
static int
-i915_gem_shrink(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask)
-{
- drm_i915_private_t *dev_priv, *next_dev;
- struct drm_i915_gem_object *obj_priv, *next_obj;
- int cnt = 0;
- int would_deadlock = 1;
+i915_gem_inactive_shrink(struct shrinker *shrinker,
+ int nr_to_scan,
+ gfp_t gfp_mask)
+{
+ struct drm_i915_private *dev_priv =
+ container_of(shrinker,
+ struct drm_i915_private,
+ mm.inactive_shrinker);
+ struct drm_device *dev = dev_priv->dev;
+ struct drm_i915_gem_object *obj, *next;
+ int cnt;
+
+ if (!mutex_trylock(&dev->struct_mutex))
+ return 0;
/* "fast-path" to count number of available objects */
if (nr_to_scan == 0) {
- spin_lock(&shrink_list_lock);
- list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) {
- struct drm_device *dev = dev_priv->dev;
-
- if (mutex_trylock(&dev->struct_mutex)) {
- list_for_each_entry(obj_priv,
- &dev_priv->mm.inactive_list,
- mm_list)
- cnt++;
- mutex_unlock(&dev->struct_mutex);
- }
- }
- spin_unlock(&shrink_list_lock);
-
- return (cnt / 100) * sysctl_vfs_cache_pressure;
+ cnt = 0;
+ list_for_each_entry(obj,
+ &dev_priv->mm.inactive_list,
+ mm_list)
+ cnt++;
+ mutex_unlock(&dev->struct_mutex);
+ return cnt / 100 * sysctl_vfs_cache_pressure;
}
- spin_lock(&shrink_list_lock);
-
rescan:
/* first scan for clean buffers */
- list_for_each_entry_safe(dev_priv, next_dev,
- &shrink_list, mm.shrink_list) {
- struct drm_device *dev = dev_priv->dev;
-
- if (! mutex_trylock(&dev->struct_mutex))
- continue;
-
- spin_unlock(&shrink_list_lock);
- i915_gem_retire_requests(dev);
+ i915_gem_retire_requests(dev);
- list_for_each_entry_safe(obj_priv, next_obj,
- &dev_priv->mm.inactive_list,
- mm_list) {
- if (i915_gem_object_is_purgeable(obj_priv)) {
- i915_gem_object_unbind(&obj_priv->base);
- if (--nr_to_scan <= 0)
- break;
- }
+ list_for_each_entry_safe(obj, next,
+ &dev_priv->mm.inactive_list,
+ mm_list) {
+ if (i915_gem_object_is_purgeable(obj)) {
+ if (i915_gem_object_unbind(obj) == 0 &&
+ --nr_to_scan == 0)
+ break;
}
-
- spin_lock(&shrink_list_lock);
- mutex_unlock(&dev->struct_mutex);
-
- would_deadlock = 0;
-
- if (nr_to_scan <= 0)
- break;
}
/* second pass, evict/count anything still on the inactive list */
- list_for_each_entry_safe(dev_priv, next_dev,
- &shrink_list, mm.shrink_list) {
- struct drm_device *dev = dev_priv->dev;
-
- if (! mutex_trylock(&dev->struct_mutex))
- continue;
-
- spin_unlock(&shrink_list_lock);
-
- list_for_each_entry_safe(obj_priv, next_obj,
- &dev_priv->mm.inactive_list,
- mm_list) {
- if (nr_to_scan > 0) {
- i915_gem_object_unbind(&obj_priv->base);
- nr_to_scan--;
- } else
- cnt++;
- }
-
- spin_lock(&shrink_list_lock);
- mutex_unlock(&dev->struct_mutex);
-
- would_deadlock = 0;
+ cnt = 0;
+ list_for_each_entry_safe(obj, next,
+ &dev_priv->mm.inactive_list,
+ mm_list) {
+ if (nr_to_scan &&
+ i915_gem_object_unbind(obj) == 0)
+ nr_to_scan--;
+ else
+ cnt++;
}
- if (nr_to_scan) {
- int active = 0;
-
+ if (nr_to_scan && i915_gpu_is_active(dev)) {
/*
* We are desperate for pages, so as a last resort, wait
* for the GPU to finish and discard whatever we can.
* This has a dramatic impact to reduce the number of
* OOM-killer events whilst running the GPU aggressively.
*/
- list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) {
- struct drm_device *dev = dev_priv->dev;
-
- if (!mutex_trylock(&dev->struct_mutex))
- continue;
-
- spin_unlock(&shrink_list_lock);
-
- if (i915_gpu_is_active(dev)) {
- i915_gpu_idle(dev);
- active++;
- }
-
- spin_lock(&shrink_list_lock);
- mutex_unlock(&dev->struct_mutex);
- }
-
- if (active)
+ if (i915_gpu_idle(dev) == 0)
goto rescan;
}
-
- spin_unlock(&shrink_list_lock);
-
- if (would_deadlock)
- return -1;
- else if (cnt > 0)
- return (cnt / 100) * sysctl_vfs_cache_pressure;
- else
- return 0;
-}
-
-static struct shrinker shrinker = {
- .shrink = i915_gem_shrink,
- .seeks = DEFAULT_SEEKS,
-};
-
-__init void
-i915_gem_shrinker_init(void)
-{
- register_shrinker(&shrinker);
-}
-
-__exit void
-i915_gem_shrinker_exit(void)
-{
- unregister_shrinker(&shrinker);
+ mutex_unlock(&dev->struct_mutex);
+ return cnt / 100 * sysctl_vfs_cache_pressure;
}
projects / mv-sheeva.git / blobdiff