diff options
| -rw-r--r-- | drivers/char/drm/drmP.h | 6 | ||||
| -rw-r--r-- | drivers/char/drm/drm_drawable.c | 248 | ||||
| -rw-r--r-- | drivers/char/drm/drm_drv.c | 15 |
3 files changed, 60 insertions, 209 deletions
diff --git a/drivers/char/drm/drmP.h b/drivers/char/drm/drmP.h index b1cafe36611e..0df87fc3dcb2 100644 --- a/drivers/char/drm/drmP.h +++ b/drivers/char/drm/drmP.h @@ -751,10 +751,7 @@ struct drm_device { /** \name Drawable information */ /*@{ */ spinlock_t drw_lock; - unsigned int drw_bitfield_length; - u32 *drw_bitfield; - unsigned int drw_info_length; - struct drm_drawable_info **drw_info; + struct idr drw_idr; /*@} */ }; @@ -904,6 +901,7 @@ extern int drm_update_drawable_info(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg); extern struct drm_drawable_info *drm_get_drawable_info(struct drm_device *dev, drm_drawable_t id); +extern void drm_drawable_free_all(struct drm_device *dev); /* Authentication IOCTL support (drm_auth.h) */ extern int drm_getmagic(struct inode *inode, struct file *filp, diff --git a/drivers/char/drm/drm_drawable.c b/drivers/char/drm/drm_drawable.c index 309e585a5442..d6cdba5644e2 100644 --- a/drivers/char/drm/drm_drawable.c +++ b/drivers/char/drm/drm_drawable.c @@ -44,82 +44,29 @@ int drm_adddraw(DRM_IOCTL_ARGS) { DRM_DEVICE; unsigned long irqflags; - int i, j; - u32 *bitfield = dev->drw_bitfield; - unsigned int bitfield_length = dev->drw_bitfield_length; - struct drm_drawable_info **info = dev->drw_info; - unsigned int info_length = dev->drw_info_length; struct drm_draw draw; + int new_id = 0; + int ret; - 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; - } -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; +again: + if (idr_pre_get(&dev->drw_idr, GFP_KERNEL) == 0) { + DRM_ERROR("Out of memory expanding drawable idr\n"); + return -ENOMEM; } - 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); + draw.handle = new_id; + + DRM_DEBUG("%d\n", draw.handle); + DRM_COPY_TO_USER_IOCTL((struct drm_draw __user *)data, draw, sizeof(draw)); return 0; @@ -132,133 +79,44 @@ int drm_rmdraw(DRM_IOCTL_ARGS) { DRM_DEVICE; struct drm_draw draw; - int id, idx; - unsigned int shift; unsigned long irqflags; - u32 *bitfield = dev->drw_bitfield; - unsigned int bitfield_length = dev->drw_bitfield_length; - struct drm_drawable_info **info = dev->drw_info; - unsigned int info_length = dev->drw_info_length; DRM_COPY_FROM_USER_IOCTL(draw, (struct drm_draw __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(struct drm_clip_rect), DRM_MEM_BUFS); - drm_free(info[id], sizeof(**info), DRM_MEM_BUFS); - } - - /* Can we shrink the arrays? */ - if (idx == bitfield_length - 1) { - while (idx >= 0 && !bitfield[idx]) - --idx; - - 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; - } + drm_free(drm_get_drawable_info(dev, draw.handle), + sizeof(struct drm_drawable_info), DRM_MEM_BUFS); - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - } + idr_remove(&dev->drw_idr, 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) { +int drm_update_drawable_info(DRM_IOCTL_ARGS) +{ DRM_DEVICE; struct drm_update_draw update; - unsigned int id, idx, shift; - u32 *bitfield = dev->drw_bitfield; - unsigned long irqflags, bitfield_length = dev->drw_bitfield_length; - struct drm_drawable_info *info; + unsigned long irqflags; struct drm_clip_rect *rects; + struct drm_drawable_info *info; int err; DRM_COPY_FROM_USER_IOCTL(update, (struct drm_update_draw __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(struct drm_drawable_info), 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; } } @@ -295,12 +153,11 @@ int drm_update_drawable_info(DRM_IOCTL_ARGS) { info->rects = rects; info->num_rects = update.num; - dev->drw_info[id] = info; 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); @@ -310,11 +167,9 @@ int drm_update_drawable_info(DRM_IOCTL_ARGS) { 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(struct drm_clip_rect), DRM_MEM_BUFS); + if (rects != info->rects) + drm_free(rects, update.num * sizeof(struct drm_clip_rect), + DRM_MEM_BUFS); return err; } @@ -322,20 +177,27 @@ error: /** * Caller must hold the drawable spinlock! */ -struct drm_drawable_info *drm_get_drawable_info(struct drm_device *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); diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c index d5cf5cfccf78..19994cd865de 100644 --- a/drivers/char/drm/drm_drv.c +++ b/drivers/char/drm/drm_drv.c @@ -151,19 +151,10 @@ int drm_lastclose(struct drm_device * dev) if (dev->irq_enabled) drm_irq_uninstall(dev); - /* Free drawable information memory */ - for (i = 0; i < dev->drw_bitfield_length / sizeof(*dev->drw_bitfield); - i++) { - struct drm_drawable_info *info = drm_get_drawable_info(dev, i); - - 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); - } - } - mutex_lock(&dev->struct_mutex); + + /* Free drawable information memory */ + drm_drawable_free_all(dev); del_timer(&dev->timer); /* Clear pid list */ |