@@ -177,8 +177,8 @@ i915_gem_object_create_internal(struct drm_i915_private *i915,
return ERR_PTR(-ENOMEM);
drm_gem_private_object_init(&i915->drm, &obj->base, size);
- i915_gem_object_init(obj, &i915_gem_object_internal_ops, &lock_class,
- I915_BO_ALLOC_STRUCT_PAGE);
+ i915_gem_object_init(obj, &i915_gem_object_internal_ops, &lock_class, 0);
+ obj->mem_flags |= I915_BO_FLAG_STRUCT_PAGE;
/*
* Mark the object as volatile, such that the pages are marked as
@@ -684,7 +684,7 @@ __assign_mmap_offset(struct drm_i915_gem_object *obj,
if (mmap_type != I915_MMAP_TYPE_GTT &&
!i915_gem_object_has_struct_page(obj) &&
- !i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_IOMEM))
+ !i915_gem_object_has_iomem(obj))
return -ENODEV;
mmo = mmap_offset_attach(obj, mmap_type, file);
@@ -708,7 +708,12 @@ __assign_mmap_offset_handle(struct drm_file *file,
if (!obj)
return -ENOENT;
+ err = i915_gem_object_lock_interruptible(obj, NULL);
+ if (err)
+ goto out_put;
err = __assign_mmap_offset(obj, mmap_type, offset, file);
+ i915_gem_object_unlock(obj);
+out_put:
i915_gem_object_put(obj);
return err;
}
@@ -932,10 +937,7 @@ int i915_gem_mmap(struct file *filp, struct vm_area_struct *vma)
return PTR_ERR(anon);
}
- vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
-
- if (i915_gem_object_has_iomem(obj))
- vma->vm_flags |= VM_IO;
+ vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP | VM_IO;
/*
* We keep the ref on mmo->obj, not vm_file, but we require
@@ -475,6 +475,44 @@ bool i915_gem_object_migratable(struct drm_i915_gem_object *obj)
return obj->mm.n_placements > 1;
}
+/**
+ * i915_gem_object_has_struct_page - Whether the object is page-backed
+ * @obj: The object to query.
+ *
+ * This function should only be called while the object is locked or pinned,
+ * otherwise the page backing may change under the caller.
+ *
+ * Return: True if page-backed, false otherwise.
+ */
+bool i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj)
+{
+#ifdef CONFIG_LOCKDEP
+ if (IS_DGFX(to_i915(obj->base.dev)) &&
+ i915_gem_object_evictable((void __force *)obj))
+ assert_object_held_shared(obj);
+#endif
+ return obj->mem_flags & I915_BO_FLAG_STRUCT_PAGE;
+}
+
+/**
+ * i915_gem_object_has_iomem - Whether the object is iomem-backed
+ * @obj: The object to query.
+ *
+ * This function should only be called while the object is locked or pinned,
+ * otherwise the iomem backing may change under the caller.
+ *
+ * Return: True if iomem-backed, false otherwise.
+ */
+bool i915_gem_object_has_iomem(const struct drm_i915_gem_object *obj)
+{
+#ifdef CONFIG_LOCKDEP
+ if (IS_DGFX(to_i915(obj->base.dev)) &&
+ i915_gem_object_evictable((void __force *)obj))
+ assert_object_held_shared(obj);
+#endif
+ return obj->mem_flags & I915_BO_FLAG_IOMEM;
+}
+
void i915_gem_init__objects(struct drm_i915_private *i915)
{
INIT_WORK(&i915->mm.free_work, __i915_gem_free_work);
@@ -147,7 +147,7 @@ i915_gem_object_put(struct drm_i915_gem_object *obj)
/*
* If more than one potential simultaneous locker, assert held.
*/
-static inline void assert_object_held_shared(struct drm_i915_gem_object *obj)
+static inline void assert_object_held_shared(const struct drm_i915_gem_object *obj)
{
/*
* Note mm list lookup is protected by
@@ -261,17 +261,9 @@ i915_gem_object_type_has(const struct drm_i915_gem_object *obj,
return obj->ops->flags & flags;
}
-static inline bool
-i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj)
-{
- return obj->flags & I915_BO_ALLOC_STRUCT_PAGE;
-}
+bool i915_gem_object_has_struct_page(const struct drm_i915_gem_object *obj);
-static inline bool
-i915_gem_object_has_iomem(const struct drm_i915_gem_object *obj)
-{
- return i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_IOMEM);
-}
+bool i915_gem_object_has_iomem(const struct drm_i915_gem_object *obj);
static inline bool
i915_gem_object_is_shrinkable(const struct drm_i915_gem_object *obj)
@@ -33,10 +33,9 @@ struct i915_lut_handle {
struct drm_i915_gem_object_ops {
unsigned int flags;
-#define I915_GEM_OBJECT_HAS_IOMEM BIT(1)
-#define I915_GEM_OBJECT_IS_SHRINKABLE BIT(2)
-#define I915_GEM_OBJECT_IS_PROXY BIT(3)
-#define I915_GEM_OBJECT_NO_MMAP BIT(4)
+#define I915_GEM_OBJECT_IS_SHRINKABLE BIT(1)
+#define I915_GEM_OBJECT_IS_PROXY BIT(2)
+#define I915_GEM_OBJECT_NO_MMAP BIT(3)
/* Interface between the GEM object and its backing storage.
* get_pages() is called once prior to the use of the associated set
@@ -201,17 +200,18 @@ struct drm_i915_gem_object {
unsigned long flags;
#define I915_BO_ALLOC_CONTIGUOUS BIT(0)
#define I915_BO_ALLOC_VOLATILE BIT(1)
-#define I915_BO_ALLOC_STRUCT_PAGE BIT(2)
-#define I915_BO_ALLOC_CPU_CLEAR BIT(3)
-#define I915_BO_ALLOC_USER BIT(4)
+#define I915_BO_ALLOC_CPU_CLEAR BIT(2)
+#define I915_BO_ALLOC_USER BIT(3)
#define I915_BO_ALLOC_FLAGS (I915_BO_ALLOC_CONTIGUOUS | \
I915_BO_ALLOC_VOLATILE | \
- I915_BO_ALLOC_STRUCT_PAGE | \
I915_BO_ALLOC_CPU_CLEAR | \
I915_BO_ALLOC_USER)
-#define I915_BO_READONLY BIT(5)
-#define I915_TILING_QUIRK_BIT 6 /* unknown swizzling; do not release! */
+#define I915_BO_READONLY BIT(4)
+#define I915_TILING_QUIRK_BIT 5 /* unknown swizzling; do not release! */
+ unsigned int mem_flags:2;
+#define I915_BO_FLAG_STRUCT_PAGE BIT(0)
+#define I915_BO_FLAG_IOMEM BIT(1)
/*
* Is the object to be mapped as read-only to the GPU
* Only honoured if hardware has relevant pte bit
@@ -351,7 +351,7 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj,
int err;
if (!i915_gem_object_has_struct_page(obj) &&
- !i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_IOMEM))
+ !i915_gem_object_has_iomem(obj))
return ERR_PTR(-ENXIO);
assert_object_held(obj);
@@ -76,7 +76,7 @@ static int i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj)
intel_gt_chipset_flush(&to_i915(obj->base.dev)->gt);
/* We're no longer struct page backed */
- obj->flags &= ~I915_BO_ALLOC_STRUCT_PAGE;
+ obj->mem_flags &= ~I915_BO_FLAG_STRUCT_PAGE;
__i915_gem_object_set_pages(obj, st, sg->length);
return 0;
@@ -284,6 +284,7 @@ __i915_gem_object_release_shmem(struct drm_i915_gem_object *obj,
bool needs_clflush)
{
GEM_BUG_ON(obj->mm.madv == __I915_MADV_PURGED);
+ GEM_WARN_ON(IS_DGFX(to_i915(obj->base.dev)));
if (obj->mm.madv == I915_MADV_DONTNEED)
obj->mm.dirty = false;
@@ -302,6 +303,7 @@ void i915_gem_object_put_pages_shmem(struct drm_i915_gem_object *obj, struct sg_
struct pagevec pvec;
struct page *page;
+ GEM_WARN_ON(IS_DGFX(to_i915(obj->base.dev)));
__i915_gem_object_release_shmem(obj, pages, true);
i915_gem_gtt_finish_pages(obj, pages);
@@ -444,7 +446,7 @@ shmem_pread(struct drm_i915_gem_object *obj,
static void shmem_release(struct drm_i915_gem_object *obj)
{
- if (obj->flags & I915_BO_ALLOC_STRUCT_PAGE)
+ if (i915_gem_object_has_struct_page(obj))
i915_gem_object_release_memory_region(obj);
fput(obj->base.filp);
@@ -513,9 +515,8 @@ static int shmem_object_init(struct intel_memory_region *mem,
mapping_set_gfp_mask(mapping, mask);
GEM_BUG_ON(!(mapping_gfp_mask(mapping) & __GFP_RECLAIM));
- i915_gem_object_init(obj, &i915_gem_shmem_ops, &lock_class,
- I915_BO_ALLOC_STRUCT_PAGE);
-
+ i915_gem_object_init(obj, &i915_gem_shmem_ops, &lock_class, 0);
+ obj->mem_flags |= I915_BO_FLAG_STRUCT_PAGE;
obj->write_domain = I915_GEM_DOMAIN_CPU;
obj->read_domains = I915_GEM_DOMAIN_CPU;
@@ -561,6 +562,7 @@ i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv,
resource_size_t offset;
int err;
+ GEM_WARN_ON(IS_DGFX(dev_priv));
obj = i915_gem_object_create_shmem(dev_priv, round_up(size, PAGE_SIZE));
if (IS_ERR(obj))
return obj;
@@ -563,7 +563,6 @@ static u64 i915_ttm_mmap_offset(struct drm_i915_gem_object *obj)
const struct drm_i915_gem_object_ops i915_gem_ttm_obj_ops = {
.name = "i915_gem_object_ttm",
- .flags = I915_GEM_OBJECT_HAS_IOMEM,
.get_pages = i915_ttm_get_pages,
.put_pages = i915_ttm_put_pages,
@@ -620,6 +619,7 @@ int __i915_gem_ttm_object_init(struct intel_memory_region *mem,
i915_gem_object_init_memory_region(obj, mem);
i915_gem_object_make_unshrinkable(obj);
obj->read_domains = I915_GEM_DOMAIN_WC | I915_GEM_DOMAIN_GTT;
+ obj->mem_flags |= I915_BO_FLAG_IOMEM;
i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
INIT_RADIX_TREE(&obj->ttm.get_io_page.radix, GFP_KERNEL | __GFP_NOWARN);
mutex_init(&obj->ttm.get_io_page.lock);
@@ -538,8 +538,8 @@ i915_gem_userptr_ioctl(struct drm_device *dev,
return -ENOMEM;
drm_gem_private_object_init(dev, &obj->base, args->user_size);
- i915_gem_object_init(obj, &i915_gem_userptr_ops, &lock_class,
- I915_BO_ALLOC_STRUCT_PAGE);
+ i915_gem_object_init(obj, &i915_gem_userptr_ops, &lock_class, 0);
+ obj->mem_flags = I915_BO_FLAG_STRUCT_PAGE;
obj->read_domains = I915_GEM_DOMAIN_CPU;
obj->write_domain = I915_GEM_DOMAIN_CPU;
i915_gem_object_set_cache_coherency(obj, I915_CACHE_LLC);
@@ -114,8 +114,8 @@ huge_gem_object(struct drm_i915_private *i915,
return ERR_PTR(-ENOMEM);
drm_gem_private_object_init(&i915->drm, &obj->base, dma_size);
- i915_gem_object_init(obj, &huge_ops, &lock_class,
- I915_BO_ALLOC_STRUCT_PAGE);
+ i915_gem_object_init(obj, &huge_ops, &lock_class, 0);
+ obj->mem_flags |= I915_BO_FLAG_STRUCT_PAGE;
obj->read_domains = I915_GEM_DOMAIN_CPU;
obj->write_domain = I915_GEM_DOMAIN_CPU;
@@ -167,9 +167,8 @@ huge_pages_object(struct drm_i915_private *i915,
return ERR_PTR(-ENOMEM);
drm_gem_private_object_init(&i915->drm, &obj->base, size);
- i915_gem_object_init(obj, &huge_page_ops, &lock_class,
- I915_BO_ALLOC_STRUCT_PAGE);
-
+ i915_gem_object_init(obj, &huge_page_ops, &lock_class, 0);
+ obj->mem_flags |= I915_BO_FLAG_STRUCT_PAGE;
i915_gem_object_set_volatile(obj);
obj->write_domain = I915_GEM_DOMAIN_CPU;
@@ -837,7 +837,7 @@ static bool can_mmap(struct drm_i915_gem_object *obj, enum i915_mmap_type type)
if (type != I915_MMAP_TYPE_GTT &&
!i915_gem_object_has_struct_page(obj) &&
- !i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_IOMEM))
+ !i915_gem_object_has_iomem(obj))
return false;
return true;
@@ -991,7 +991,7 @@ static const char *repr_mmap_type(enum i915_mmap_type type)
static bool can_access(const struct drm_i915_gem_object *obj)
{
return i915_gem_object_has_struct_page(obj) ||
- i915_gem_object_type_has(obj, I915_GEM_OBJECT_HAS_IOMEM);
+ i915_gem_object_has_iomem(obj);
}
static int __igt_mmap_access(struct drm_i915_private *i915,
@@ -25,13 +25,14 @@ static int mock_phys_object(void *arg)
goto out;
}
+ i915_gem_object_lock(obj, NULL);
if (!i915_gem_object_has_struct_page(obj)) {
+ i915_gem_object_unlock(obj);
err = -EINVAL;
pr_err("shmem has no struct page\n");
goto out_obj;
}
- i915_gem_object_lock(obj, NULL);
err = i915_gem_object_attach_phys(obj, PAGE_SIZE);
i915_gem_object_unlock(obj);
if (err) {