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-rw-r--r--linux-core/drmP.h3
-rw-r--r--linux-core/drm_bo.c124
-rw-r--r--linux-core/drm_ttm.c10
-rw-r--r--linux-core/drm_ttm.h1
4 files changed, 90 insertions, 48 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index af082ad7..81b7a1b6 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -951,8 +951,9 @@ typedef struct drm_buffer_object{
atomic_t usage;
drm_ttm_object_t *ttm_object;
drm_ttm_backend_list_t *ttm_region;
- void __user *user_pages;
unsigned long num_pages;
+ unsigned long buffer_start;
+ drm_bo_type_t type;
atomic_t mapped;
uint32_t flags;
diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c
index 23634955..30656060 100644
--- a/linux-core/drm_bo.c
+++ b/linux-core/drm_bo.c
@@ -141,8 +141,8 @@ static int drm_move_tt_to_local(drm_buffer_object_t *buf, int lazy)
drm_unbind_ttm_region(buf->ttm_region);
drm_mm_put_block(&bm->tt_manager, buf->tt);
buf->tt = NULL;
- buf->flags &= ~(DRM_BO_FLAG_MEM_TT | DRM_BO_FLAG_UNCACHED);
- buf->flags |= DRM_BO_FLAG_MEM_LOCAL;
+ buf->flags &= ~(DRM_BO_FLAG_MEM_TT);
+ buf->flags |= DRM_BO_FLAG_MEM_LOCAL | DRM_BO_FLAG_CACHED;
return 0;
}
@@ -531,9 +531,65 @@ static int drm_buffer_object_validate(drm_device_t *dev, drm_buffer_object_t *bo
return 0;
}
+/*
+ * Call bo->mutex locked.
+ */
+
+static int drm_bo_add_ttm(drm_file_t *priv, drm_buffer_object_t *bo, uint32_t new_flags,
+ uint32_t ttm_handle)
+
+{
+ drm_device_t *dev = bo->dev;
+ drm_ttm_object_t *to = NULL;
+ drm_ttm_t *ttm;
+ int ret=0;
+ uint32_t ttm_flags = 0;
+
+ bo->ttm_object = NULL;
+ bo->ttm_region = NULL;
+
+ switch(bo->type) {
+ case drm_bo_type_dc:
+ mutex_lock(&dev->struct_mutex);
+ ret = drm_ttm_object_create(dev, bo->num_pages*PAGE_SIZE,
+ ttm_flags, &to);
+ mutex_unlock(&dev->struct_mutex);
+ break;
+ case drm_bo_type_ttm:
+ mutex_lock(&dev->struct_mutex);
+ to = drm_lookup_ttm_object(priv, ttm_handle, 1);
+ mutex_unlock(&dev->struct_mutex);
+ if (!to)
+ ret = -EINVAL;
+ break;
+ case drm_bo_type_user:
+
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ if (ret) {
+ return ret;
+ }
+
+ if (to) {
+ bo->ttm_object = to;
+ ttm = drm_ttm_from_object(to);
+ ret = drm_create_ttm_region(ttm, bo->buffer_start >> PAGE_SHIFT,
+ bo->num_pages,
+ new_flags & DRM_BO_FLAG_CACHED,
+ &bo->ttm_region);
+ if (ret) {
+ drm_ttm_object_deref_unlocked(dev, to);
+ }
+ }
+ return ret;
+}
+
int drm_buffer_object_create(drm_file_t *priv,
- int size,
+ unsigned long size,
drm_bo_type_t type,
uint32_t ttm_handle,
uint32_t mask,
@@ -544,8 +600,18 @@ int drm_buffer_object_create(drm_file_t *priv,
drm_device_t *dev = priv->head->dev;
drm_buffer_object_t *bo;
int ret = 0;
- uint32_t ttm_flags = 0;
- drm_ttm_t *ttm;
+ uint32_t new_flags;
+ unsigned long num_pages;
+
+ if (buffer_start & ~PAGE_MASK) {
+ DRM_ERROR("Invalid buffer object start.\n");
+ return -EINVAL;
+ }
+ num_pages = (size + PAGE_SIZE -1) >> PAGE_SHIFT;
+ if (num_pages == 0) {
+ DRM_ERROR("Illegal buffer object size.\n");
+ return -EINVAL;
+ }
bo = drm_calloc(1, sizeof(*bo), DRM_MEM_BUFOBJ);
@@ -561,50 +627,14 @@ int drm_buffer_object_create(drm_file_t *priv,
INIT_LIST_HEAD(&bo->head);
INIT_LIST_HEAD(&bo->ddestroy);
bo->dev = dev;
+ bo->type = type;
+ bo->num_pages = num_pages;
+ bo->buffer_start = buffer_start;
- switch(type) {
- case drm_bo_type_dc:
- ret = drm_ttm_object_create(dev, size, ttm_flags, &bo->ttm_object);
- if (ret)
- goto out_err;
- break;
- case drm_bo_type_ttm:
- if (buffer_start & ~PAGE_MASK) {
- DRM_ERROR("Illegal buffer object start\n");
- ret = -EINVAL;
- }
- bo->num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
- if (!bo->num_pages) {
- DRM_ERROR("Illegal buffer object size\n");
- ret = -EINVAL;
- goto out_err;
- }
- bo->ttm_object = drm_lookup_ttm_object(priv, ttm_handle, 1);
- if (!bo->ttm_object) {
- DRM_ERROR("Could not find buffer object TTM\n");
- ret = -EINVAL;
- goto out_err;
- }
- ttm = drm_ttm_from_object(bo->ttm_object);
- ret = drm_create_ttm_region(ttm, buffer_start >> PAGE_SHIFT,
- bo->num_pages, 0, &bo->ttm_region);
- if (ret)
- goto out_err;
- break;
- case drm_bo_type_user:
- if (buffer_start & ~PAGE_MASK) {
- DRM_ERROR("Illegal buffer object start\n");
- ret = -EINVAL;
- goto out_err;
- }
- bo->num_pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
- bo->user_pages = (void __user *)buffer_start;
- break;
- default:
- ret = -EINVAL;
+ ret = drm_bo_add_ttm(priv, bo, new_flags, ttm_handle);
+ if (ret)
goto out_err;
- }
-
+
bo->mask = mask;
bo->mask_hint = hint;
diff --git a/linux-core/drm_ttm.c b/linux-core/drm_ttm.c
index 8cd0af61..e111070e 100644
--- a/linux-core/drm_ttm.c
+++ b/linux-core/drm_ttm.c
@@ -784,6 +784,16 @@ void drm_ttm_object_deref_locked(drm_device_t *dev, drm_ttm_object_t *to)
}
}
+void drm_ttm_object_deref_unlocked(drm_device_t *dev, drm_ttm_object_t *to)
+{
+ if (atomic_dec_and_test(&to->usage)) {
+ mutex_lock(&dev->struct_mutex);
+ if (atomic_read(&to->usage) == 0)
+ drm_ttm_object_remove(dev, to);
+ mutex_unlock(&dev->struct_mutex);
+ }
+}
+
/*
* dev->struct_mutex locked.
diff --git a/linux-core/drm_ttm.h b/linux-core/drm_ttm.h
index ba4261bf..a1810509 100644
--- a/linux-core/drm_ttm.h
+++ b/linux-core/drm_ttm.h
@@ -111,6 +111,7 @@ typedef struct drm_ttm_object {
extern int drm_ttm_object_create(struct drm_device *dev, unsigned long size,
uint32_t flags, drm_ttm_object_t **ttm_object);
extern void drm_ttm_object_deref_locked(struct drm_device *dev, drm_ttm_object_t *to);
+extern void drm_ttm_object_deref_unlocked(struct drm_device *dev, drm_ttm_object_t *to);
extern drm_ttm_object_t *drm_lookup_ttm_object(drm_file_t *priv, uint32_t handle,
int check_owner);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 05:48:54 +0000