/**
* Allocate drawable ID and memory to store information about it.
*/
-int drm_adddraw(DRM_IOCTL_ARGS)
+int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
unsigned long irqflags;
- int i, j;
- u32 *bitfield = dev->drw_bitfield;
- unsigned int bitfield_length = dev->drw_bitfield_length;
- drm_drawable_info_t **info = dev->drw_info;
- unsigned int info_length = dev->drw_info_length;
- drm_draw_t draw;
-
- for (i = 0, j = 0; i < bitfield_length; i++) {
- if (bitfield[i] == ~0)
- continue;
-
- for (; j < 8 * sizeof(*bitfield); j++)
- if (!(bitfield[i] & (1 << j)))
- goto done;
+ struct drm_draw *draw = data;
+ int new_id = 0;
+ int ret;
+
+again:
+ if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) {
+ DRM_ERROR("Out of memory expanding drawable idr\n");
+ return -ENOMEM;
}
-done:
-
- if (i == bitfield_length) {
- bitfield_length++;
-
- bitfield = drm_alloc(bitfield_length * sizeof(*bitfield),
- DRM_MEM_BUFS);
-
- if (!bitfield) {
- DRM_ERROR("Failed to allocate new drawable bitfield\n");
- return DRM_ERR(ENOMEM);
- }
-
- if (8 * sizeof(*bitfield) * bitfield_length > info_length) {
- info_length += 8 * sizeof(*bitfield);
-
- info = drm_alloc(info_length * sizeof(*info),
- DRM_MEM_BUFS);
-
- if (!info) {
- DRM_ERROR("Failed to allocate new drawable info"
- " array\n");
-
- drm_free(bitfield,
- bitfield_length * sizeof(*bitfield),
- DRM_MEM_BUFS);
- return DRM_ERR(ENOMEM);
- }
- }
-
- bitfield[i] = 0;
- }
-
- draw.handle = i * 8 * sizeof(*bitfield) + j + 1;
- DRM_DEBUG("%d\n", draw.handle);
spin_lock_irqsave(&dev->drw_lock, irqflags);
-
- bitfield[i] |= 1 << j;
- info[draw.handle - 1] = NULL;
-
- if (bitfield != dev->drw_bitfield) {
- memcpy(bitfield, dev->drw_bitfield, dev->drw_bitfield_length *
- sizeof(*bitfield));
- drm_free(dev->drw_bitfield, sizeof(*bitfield) *
- dev->drw_bitfield_length, DRM_MEM_BUFS);
- dev->drw_bitfield = bitfield;
- dev->drw_bitfield_length = bitfield_length;
- }
-
- if (info != dev->drw_info) {
- memcpy(info, dev->drw_info, dev->drw_info_length *
- sizeof(*info));
- drm_free(dev->drw_info, sizeof(*info) * dev->drw_info_length,
- DRM_MEM_BUFS);
- dev->drw_info = info;
- dev->drw_info_length = info_length;
+ ret = idr_get_new_above(&dev->drw_idr, NULL, 1, &new_id);
+ if (ret == -EAGAIN) {
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ goto again;
}
spin_unlock_irqrestore(&dev->drw_lock, irqflags);
- DRM_COPY_TO_USER_IOCTL((drm_draw_t __user *)data, draw, sizeof(draw));
+ draw->handle = new_id;
+
+ DRM_DEBUG("%d\n", draw->handle);
return 0;
}
/**
* Free drawable ID and memory to store information about it.
*/
-int drm_rmdraw(DRM_IOCTL_ARGS)
+int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- DRM_DEVICE;
- drm_draw_t draw;
- int id, idx;
- unsigned int shift;
+ struct drm_draw *draw = data;
unsigned long irqflags;
- u32 *bitfield = dev->drw_bitfield;
- unsigned int bitfield_length = dev->drw_bitfield_length;
- drm_drawable_info_t **info = dev->drw_info;
- unsigned int info_length = dev->drw_info_length;
-
- DRM_COPY_FROM_USER_IOCTL(draw, (drm_draw_t __user *) data,
- sizeof(draw));
-
- id = draw.handle - 1;
- idx = id / (8 * sizeof(*bitfield));
- shift = id % (8 * sizeof(*bitfield));
-
- if (idx < 0 || idx >= bitfield_length ||
- !(bitfield[idx] & (1 << shift))) {
- DRM_DEBUG("No such drawable %d\n", draw.handle);
- return 0;
- }
spin_lock_irqsave(&dev->drw_lock, irqflags);
- bitfield[idx] &= ~(1 << shift);
-
- spin_unlock_irqrestore(&dev->drw_lock, irqflags);
-
- if (info[id]) {
- drm_free(info[id]->rects, info[id]->num_rects *
- sizeof(drm_clip_rect_t), DRM_MEM_BUFS);
- drm_free(info[id], sizeof(**info), DRM_MEM_BUFS);
- }
+ drm_free(drm_get_drawable_info(dev, draw->handle),
+ sizeof(struct drm_drawable_info), DRM_MEM_BUFS);
- /* Can we shrink the arrays? */
- if (idx == bitfield_length - 1) {
- while (idx >= 0 && !bitfield[idx])
- --idx;
+ idr_remove(&dev->drw_idr, draw->handle);
- bitfield_length = idx + 1;
-
- bitfield = NULL;
-
- if (bitfield_length) {
- if (bitfield_length != dev->drw_bitfield_length)
- bitfield = drm_alloc(bitfield_length *
- sizeof(*bitfield),
- DRM_MEM_BUFS);
-
- if (!bitfield) {
- bitfield = dev->drw_bitfield;
- bitfield_length = dev->drw_bitfield_length;
- }
- }
- }
-
- if (bitfield != dev->drw_bitfield) {
- info_length = 8 * sizeof(*bitfield) * bitfield_length;
-
- if (info_length) {
- info = drm_alloc(info_length * sizeof(*info),
- DRM_MEM_BUFS);
-
- if (!info) {
- info = dev->drw_info;
- info_length = dev->drw_info_length;
- }
- } else
- info = NULL;
-
- spin_lock_irqsave(&dev->drw_lock, irqflags);
-
- if (bitfield)
- memcpy(bitfield, dev->drw_bitfield, bitfield_length *
- sizeof(*bitfield));
- drm_free(dev->drw_bitfield, sizeof(*bitfield) *
- dev->drw_bitfield_length, DRM_MEM_BUFS);
- dev->drw_bitfield = bitfield;
- dev->drw_bitfield_length = bitfield_length;
-
- if (info != dev->drw_info) {
- if (info)
- memcpy(info, dev->drw_info, info_length *
- sizeof(*info));
- drm_free(dev->drw_info, sizeof(*info) *
- dev->drw_info_length, DRM_MEM_BUFS);
- dev->drw_info = info;
- dev->drw_info_length = info_length;
- }
-
- spin_unlock_irqrestore(&dev->drw_lock, irqflags);
- }
-
- DRM_DEBUG("%d\n", draw.handle);
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ DRM_DEBUG("%d\n", draw->handle);
return 0;
}
-int drm_update_drawable_info(DRM_IOCTL_ARGS) {
- DRM_DEVICE;
- drm_update_draw_t update;
- unsigned int id, idx, shift;
- u32 *bitfield = dev->drw_bitfield;
- unsigned long irqflags, bitfield_length = dev->drw_bitfield_length;
- drm_drawable_info_t *info;
- drm_clip_rect_t *rects;
+int drm_update_drawable_info(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+ struct drm_update_draw *update = data;
+ unsigned long irqflags;
+ struct drm_clip_rect *rects;
+ struct drm_drawable_info *info;
int err;
- DRM_COPY_FROM_USER_IOCTL(update, (drm_update_draw_t __user *) data,
- sizeof(update));
-
- id = update.handle - 1;
- idx = id / (8 * sizeof(*bitfield));
- shift = id % (8 * sizeof(*bitfield));
-
- if (idx < 0 || idx >= bitfield_length ||
- !(bitfield[idx] & (1 << shift))) {
- DRM_ERROR("No such drawable %d\n", update.handle);
- return DRM_ERR(EINVAL);
- }
-
- info = dev->drw_info[id];
-
+ info = idr_find(&dev->drw_idr, update->handle);
if (!info) {
- info = drm_calloc(1, sizeof(drm_drawable_info_t), DRM_MEM_BUFS);
-
- if (!info) {
- DRM_ERROR("Failed to allocate drawable info memory\n");
- return DRM_ERR(ENOMEM);
+ info = drm_calloc(1, sizeof(*info), DRM_MEM_BUFS);
+ if (!info)
+ return -ENOMEM;
+ if (IS_ERR(idr_replace(&dev->drw_idr, info, update->handle))) {
+ DRM_ERROR("No such drawable %d\n", update->handle);
+ drm_free(info, sizeof(*info), DRM_MEM_BUFS);
+ return -EINVAL;
}
}
- switch (update.type) {
+ switch (update->type) {
case DRM_DRAWABLE_CLIPRECTS:
- if (update.num != info->num_rects) {
- rects = drm_alloc(update.num * sizeof(drm_clip_rect_t),
+ if (update->num != info->num_rects) {
+ rects = drm_alloc(update->num * sizeof(struct drm_clip_rect),
DRM_MEM_BUFS);
} else
rects = info->rects;
- if (update.num && !rects) {
+ if (update->num && !rects) {
DRM_ERROR("Failed to allocate cliprect memory\n");
- err = DRM_ERR(ENOMEM);
+ err = -ENOMEM;
goto error;
}
- if (update.num && DRM_COPY_FROM_USER(rects,
- (drm_clip_rect_t __user *)
- (unsigned long)update.data,
- update.num *
+ if (update->num && DRM_COPY_FROM_USER(rects,
+ (struct drm_clip_rect __user *)
+ (unsigned long)update->data,
+ update->num *
sizeof(*rects))) {
DRM_ERROR("Failed to copy cliprects from userspace\n");
- err = DRM_ERR(EFAULT);
+ err = -EFAULT;
goto error;
}
if (rects != info->rects) {
drm_free(info->rects, info->num_rects *
- sizeof(drm_clip_rect_t), DRM_MEM_BUFS);
+ sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
}
info->rects = rects;
- info->num_rects = update.num;
- dev->drw_info[id] = info;
+ info->num_rects = update->num;
spin_unlock_irqrestore(&dev->drw_lock, irqflags);
DRM_DEBUG("Updated %d cliprects for drawable %d\n",
- info->num_rects, id);
+ info->num_rects, update->handle);
break;
default:
- DRM_ERROR("Invalid update type %d\n", update.type);
- return DRM_ERR(EINVAL);
+ DRM_ERROR("Invalid update type %d\n", update->type);
+ return -EINVAL;
}
return 0;
error:
- if (!dev->drw_info[id])
- drm_free(info, sizeof(*info), DRM_MEM_BUFS);
- else if (rects != dev->drw_info[id]->rects)
- drm_free(rects, update.num *
- sizeof(drm_clip_rect_t), DRM_MEM_BUFS);
+ if (rects != info->rects)
+ drm_free(rects, update->num * sizeof(struct drm_clip_rect),
+ DRM_MEM_BUFS);
return err;
}
/**
* Caller must hold the drawable spinlock!
*/
-drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) {
- u32 *bitfield = dev->drw_bitfield;
- unsigned int idx, shift;
-
- id--;
- idx = id / (8 * sizeof(*bitfield));
- shift = id % (8 * sizeof(*bitfield));
-
- if (idx < 0 || idx >= dev->drw_bitfield_length ||
- !(bitfield[idx] & (1 << shift))) {
- DRM_DEBUG("No such drawable %d\n", id);
- return NULL;
+struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev, drm_drawable_t id)
+{
+ return idr_find(&dev->drw_idr, id);
+}
+EXPORT_SYMBOL(drm_get_drawable_info);
+
+static int drm_drawable_free(int idr, void *p, void *data)
+{
+ struct drm_drawable_info *info = p;
+
+ if (info) {
+ drm_free(info->rects, info->num_rects *
+ sizeof(struct drm_clip_rect), DRM_MEM_BUFS);
+ drm_free(info, sizeof(*info), DRM_MEM_BUFS);
}
- return dev->drw_info[id];
+ return 0;
+}
+
+void drm_drawable_free_all(struct drm_device *dev)
+{
+ idr_for_each(&dev->drw_idr, drm_drawable_free, NULL);
+ idr_remove_all(&dev->drw_idr);
}
-EXPORT_SYMBOL(drm_get_drawable_info);
projects / firefly-linux-kernel-4.4.55.git / blobdiff