* \param ctx_handle context handle.
*
* Clears the bit specified by \p ctx_handle in drm_device::ctx_bitmap and the entry
- * in drm_device::context_sareas, while holding the drm_device::struct_mutex
+ * in drm_device::ctx_idr, while holding the drm_device::struct_mutex
* lock.
*/
-void drm_ctxbitmap_free(drm_device_t * dev, int ctx_handle)
+void drm_ctxbitmap_free(struct drm_device * dev, int ctx_handle)
{
- if (ctx_handle < 0)
- goto failed;
- if (!dev->ctx_bitmap)
- goto failed;
-
- if (ctx_handle < DRM_MAX_CTXBITMAP) {
- mutex_lock(&dev->struct_mutex);
- clear_bit(ctx_handle, dev->ctx_bitmap);
- dev->context_sareas[ctx_handle] = NULL;
- mutex_unlock(&dev->struct_mutex);
- return;
- }
- failed:
- DRM_ERROR("Attempt to free invalid context handle: %d\n", ctx_handle);
- return;
+ mutex_lock(&dev->struct_mutex);
+ idr_remove(&dev->ctx_idr, ctx_handle);
+ mutex_unlock(&dev->struct_mutex);
}
/**
* \param dev DRM device.
* \return (non-negative) context handle on success or a negative number on failure.
*
- * Find the first zero bit in drm_device::ctx_bitmap and (re)allocates
- * drm_device::context_sareas to accommodate the new entry while holding the
+ * Allocate a new idr from drm_device::ctx_idr while holding the
* drm_device::struct_mutex lock.
*/
-static int drm_ctxbitmap_next(drm_device_t * dev)
+static int drm_ctxbitmap_next(struct drm_device * dev)
{
- int bit;
-
- if (!dev->ctx_bitmap)
- return -1;
+ int new_id;
+ int ret;
+again:
+ if (idr_pre_get(&dev->ctx_idr, GFP_KERNEL) == 0) {
+ DRM_ERROR("Out of memory expanding drawable idr\n");
+ return -ENOMEM;
+ }
mutex_lock(&dev->struct_mutex);
- bit = find_first_zero_bit(dev->ctx_bitmap, DRM_MAX_CTXBITMAP);
- if (bit < DRM_MAX_CTXBITMAP) {
- set_bit(bit, dev->ctx_bitmap);
- DRM_DEBUG("drm_ctxbitmap_next bit : %d\n", bit);
- if ((bit + 1) > dev->max_context) {
- dev->max_context = (bit + 1);
- if (dev->context_sareas) {
- drm_map_t **ctx_sareas;
-
- ctx_sareas = drm_realloc(dev->context_sareas,
- (dev->max_context -
- 1) *
- sizeof(*dev->
- context_sareas),
- dev->max_context *
- sizeof(*dev->
- context_sareas),
- DRM_MEM_MAPS);
- if (!ctx_sareas) {
- clear_bit(bit, dev->ctx_bitmap);
- mutex_unlock(&dev->struct_mutex);
- return -1;
- }
- dev->context_sareas = ctx_sareas;
- dev->context_sareas[bit] = NULL;
- } else {
- /* max_context == 1 at this point */
- dev->context_sareas =
- drm_alloc(dev->max_context *
- sizeof(*dev->context_sareas),
- DRM_MEM_MAPS);
- if (!dev->context_sareas) {
- clear_bit(bit, dev->ctx_bitmap);
- mutex_unlock(&dev->struct_mutex);
- return -1;
- }
- dev->context_sareas[bit] = NULL;
- }
- }
+ ret = idr_get_new_above(&dev->ctx_idr, NULL,
+ DRM_RESERVED_CONTEXTS, &new_id);
+ if (ret == -EAGAIN) {
mutex_unlock(&dev->struct_mutex);
- return bit;
+ goto again;
}
mutex_unlock(&dev->struct_mutex);
- return -1;
+ return new_id;
}
/**
*
* \param dev DRM device.
*
- * Allocates and initialize drm_device::ctx_bitmap and drm_device::context_sareas, while holding
- * the drm_device::struct_mutex lock.
+ * Initialise the drm_device::ctx_idr
*/
-int drm_ctxbitmap_init(drm_device_t * dev)
+int drm_ctxbitmap_init(struct drm_device * dev)
{
- int i;
- int temp;
-
- mutex_lock(&dev->struct_mutex);
- dev->ctx_bitmap = (unsigned long *)drm_alloc(PAGE_SIZE,
- DRM_MEM_CTXBITMAP);
- if (dev->ctx_bitmap == NULL) {
- mutex_unlock(&dev->struct_mutex);
- return -ENOMEM;
- }
- memset((void *)dev->ctx_bitmap, 0, PAGE_SIZE);
- dev->context_sareas = NULL;
- dev->max_context = -1;
- mutex_unlock(&dev->struct_mutex);
-
- for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
- temp = drm_ctxbitmap_next(dev);
- DRM_DEBUG("drm_ctxbitmap_init : %d\n", temp);
- }
-
+ idr_init(&dev->ctx_idr);
return 0;
}
*
* \param dev DRM device.
*
- * Frees drm_device::ctx_bitmap and drm_device::context_sareas, while holding
- * the drm_device::struct_mutex lock.
+ * Free all idr members using drm_ctx_sarea_free helper function
+ * while holding the drm_device::struct_mutex lock.
*/
-void drm_ctxbitmap_cleanup(drm_device_t * dev)
+void drm_ctxbitmap_cleanup(struct drm_device * dev)
{
mutex_lock(&dev->struct_mutex);
- if (dev->context_sareas)
- drm_free(dev->context_sareas,
- sizeof(*dev->context_sareas) *
- dev->max_context, DRM_MEM_MAPS);
- drm_free((void *)dev->ctx_bitmap, PAGE_SIZE, DRM_MEM_CTXBITMAP);
+ idr_remove_all(&dev->ctx_idr);
mutex_unlock(&dev->struct_mutex);
}
* Get per-context SAREA.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx_priv_map structure.
* \return zero on success or a negative number on failure.
*
- * Gets the map from drm_device::context_sareas with the handle specified and
+ * Gets the map from drm_device::ctx_idr with the handle specified and
* returns its handle.
*/
-int drm_getsareactx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_getsareactx(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_ctx_priv_map_t __user *argp = (void __user *)arg;
- drm_ctx_priv_map_t request;
- drm_map_t *map;
- drm_map_list_t *_entry;
-
- if (copy_from_user(&request, argp, sizeof(request)))
- return -EFAULT;
+ struct drm_ctx_priv_map *request = data;
+ struct drm_map *map;
+ struct drm_map_list *_entry;
mutex_lock(&dev->struct_mutex);
- if (dev->max_context < 0
- || request.ctx_id >= (unsigned)dev->max_context) {
+
+ map = idr_find(&dev->ctx_idr, request->ctx_id);
+ if (!map) {
mutex_unlock(&dev->struct_mutex);
return -EINVAL;
}
- map = dev->context_sareas[request.ctx_id];
mutex_unlock(&dev->struct_mutex);
- request.handle = NULL;
- list_for_each_entry(_entry, &dev->maplist->head, head) {
+ request->handle = NULL;
+ list_for_each_entry(_entry, &dev->maplist, head) {
if (_entry->map == map) {
- request.handle =
+ request->handle =
(void *)(unsigned long)_entry->user_token;
break;
}
}
- if (request.handle == NULL)
+ if (request->handle == NULL)
return -EINVAL;
- if (copy_to_user(argp, &request, sizeof(request)))
- return -EFAULT;
return 0;
}
* Set per-context SAREA.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx_priv_map structure.
* \return zero on success or a negative number on failure.
*
* Searches the mapping specified in \p arg and update the entry in
- * drm_device::context_sareas with it.
+ * drm_device::ctx_idr with it.
*/
-int drm_setsareactx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_setsareactx(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_ctx_priv_map_t request;
- drm_map_t *map = NULL;
- drm_map_list_t *r_list = NULL;
- struct list_head *list;
-
- if (copy_from_user(&request,
- (drm_ctx_priv_map_t __user *) arg, sizeof(request)))
- return -EFAULT;
+ struct drm_ctx_priv_map *request = data;
+ struct drm_map *map = NULL;
+ struct drm_map_list *r_list = NULL;
mutex_lock(&dev->struct_mutex);
- list_for_each(list, &dev->maplist->head) {
- r_list = list_entry(list, drm_map_list_t, head);
+ list_for_each_entry(r_list, &dev->maplist, head) {
if (r_list->map
- && r_list->user_token == (unsigned long)request.handle)
+ && r_list->user_token == (unsigned long) request->handle)
goto found;
}
bad:
map = r_list->map;
if (!map)
goto bad;
- if (dev->max_context < 0)
- goto bad;
- if (request.ctx_id >= (unsigned)dev->max_context)
+
+ if (IS_ERR(idr_replace(&dev->ctx_idr, map, request->ctx_id)))
goto bad;
- dev->context_sareas[request.ctx_id] = map;
+
mutex_unlock(&dev->struct_mutex);
+
return 0;
}
*
* Attempt to set drm_device::context_flag.
*/
-static int drm_context_switch(drm_device_t * dev, int old, int new)
+static int drm_context_switch(struct drm_device * dev, int old, int new)
{
if (test_and_set_bit(0, &dev->context_flag)) {
DRM_ERROR("Reentering -- FIXME\n");
* hardware lock is held, clears the drm_device::context_flag and wakes up
* drm_device::context_wait.
*/
-static int drm_context_switch_complete(drm_device_t * dev, int new)
+static int drm_context_switch_complete(struct drm_device * dev, int new)
{
dev->last_context = new; /* PRE/POST: This is the _only_ writer. */
dev->last_switch = jiffies;
* Reserve contexts.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx_res structure.
* \return zero on success or a negative number on failure.
*/
-int drm_resctx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_resctx(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_ctx_res_t res;
- drm_ctx_t __user *argp = (void __user *)arg;
- drm_ctx_t ctx;
+ struct drm_ctx_res *res = data;
+ struct drm_ctx ctx;
int i;
- if (copy_from_user(&res, argp, sizeof(res)))
- return -EFAULT;
-
- if (res.count >= DRM_RESERVED_CONTEXTS) {
+ if (res->count >= DRM_RESERVED_CONTEXTS) {
memset(&ctx, 0, sizeof(ctx));
for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
ctx.handle = i;
- if (copy_to_user(&res.contexts[i], &ctx, sizeof(ctx)))
+ if (copy_to_user(&res->contexts[i], &ctx, sizeof(ctx)))
return -EFAULT;
}
}
- res.count = DRM_RESERVED_CONTEXTS;
+ res->count = DRM_RESERVED_CONTEXTS;
- if (copy_to_user(argp, &res, sizeof(res)))
- return -EFAULT;
return 0;
}
* Add context.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx structure.
* \return zero on success or a negative number on failure.
*
* Get a new handle for the context and copy to userspace.
*/
-int drm_addctx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_addctx(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_ctx_list_t *ctx_entry;
- drm_ctx_t __user *argp = (void __user *)arg;
- drm_ctx_t ctx;
-
- if (copy_from_user(&ctx, argp, sizeof(ctx)))
- return -EFAULT;
+ struct drm_ctx_list *ctx_entry;
+ struct drm_ctx *ctx = data;
- ctx.handle = drm_ctxbitmap_next(dev);
- if (ctx.handle == DRM_KERNEL_CONTEXT) {
+ ctx->handle = drm_ctxbitmap_next(dev);
+ if (ctx->handle == DRM_KERNEL_CONTEXT) {
/* Skip kernel's context and get a new one. */
- ctx.handle = drm_ctxbitmap_next(dev);
+ ctx->handle = drm_ctxbitmap_next(dev);
}
- DRM_DEBUG("%d\n", ctx.handle);
- if (ctx.handle == -1) {
+ DRM_DEBUG("%d\n", ctx->handle);
+ if (ctx->handle == -1) {
DRM_DEBUG("Not enough free contexts.\n");
/* Should this return -EBUSY instead? */
return -ENOMEM;
}
- if (ctx.handle != DRM_KERNEL_CONTEXT) {
+ if (ctx->handle != DRM_KERNEL_CONTEXT) {
if (dev->driver->context_ctor)
- if (!dev->driver->context_ctor(dev, ctx.handle)) {
+ if (!dev->driver->context_ctor(dev, ctx->handle)) {
DRM_DEBUG("Running out of ctxs or memory.\n");
return -ENOMEM;
}
}
INIT_LIST_HEAD(&ctx_entry->head);
- ctx_entry->handle = ctx.handle;
- ctx_entry->tag = priv;
+ ctx_entry->handle = ctx->handle;
+ ctx_entry->tag = file_priv;
mutex_lock(&dev->ctxlist_mutex);
- list_add(&ctx_entry->head, &dev->ctxlist->head);
+ list_add(&ctx_entry->head, &dev->ctxlist);
++dev->ctx_count;
mutex_unlock(&dev->ctxlist_mutex);
- if (copy_to_user(argp, &ctx, sizeof(ctx)))
- return -EFAULT;
return 0;
}
-int drm_modctx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_modctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
/* This does nothing */
return 0;
* Get context.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx structure.
* \return zero on success or a negative number on failure.
*/
-int drm_getctx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_getctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- drm_ctx_t __user *argp = (void __user *)arg;
- drm_ctx_t ctx;
-
- if (copy_from_user(&ctx, argp, sizeof(ctx)))
- return -EFAULT;
+ struct drm_ctx *ctx = data;
/* This is 0, because we don't handle any context flags */
- ctx.flags = 0;
+ ctx->flags = 0;
- if (copy_to_user(argp, &ctx, sizeof(ctx)))
- return -EFAULT;
return 0;
}
* Switch context.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx structure.
* \return zero on success or a negative number on failure.
*
* Calls context_switch().
*/
-int drm_switchctx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_switchctx(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_ctx_t ctx;
-
- if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
- return -EFAULT;
+ struct drm_ctx *ctx = data;
- DRM_DEBUG("%d\n", ctx.handle);
- return drm_context_switch(dev, dev->last_context, ctx.handle);
+ DRM_DEBUG("%d\n", ctx->handle);
+ return drm_context_switch(dev, dev->last_context, ctx->handle);
}
/**
* New context.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx structure.
* \return zero on success or a negative number on failure.
*
* Calls context_switch_complete().
*/
-int drm_newctx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_newctx(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_ctx_t ctx;
+ struct drm_ctx *ctx = data;
- if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
- return -EFAULT;
-
- DRM_DEBUG("%d\n", ctx.handle);
- drm_context_switch_complete(dev, ctx.handle);
+ DRM_DEBUG("%d\n", ctx->handle);
+ drm_context_switch_complete(dev, ctx->handle);
return 0;
}
* Remove context.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument pointing to a drm_ctx structure.
* \return zero on success or a negative number on failure.
*
* If not the special kernel context, calls ctxbitmap_free() to free the specified context.
*/
-int drm_rmctx(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_rmctx(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_ctx_t ctx;
-
- if (copy_from_user(&ctx, (drm_ctx_t __user *) arg, sizeof(ctx)))
- return -EFAULT;
+ struct drm_ctx *ctx = data;
- DRM_DEBUG("%d\n", ctx.handle);
- if (ctx.handle == DRM_KERNEL_CONTEXT + 1) {
- priv->remove_auth_on_close = 1;
+ DRM_DEBUG("%d\n", ctx->handle);
+ if (ctx->handle == DRM_KERNEL_CONTEXT + 1) {
+ file_priv->remove_auth_on_close = 1;
}
- if (ctx.handle != DRM_KERNEL_CONTEXT) {
+ if (ctx->handle != DRM_KERNEL_CONTEXT) {
if (dev->driver->context_dtor)
- dev->driver->context_dtor(dev, ctx.handle);
- drm_ctxbitmap_free(dev, ctx.handle);
+ dev->driver->context_dtor(dev, ctx->handle);
+ drm_ctxbitmap_free(dev, ctx->handle);
}
mutex_lock(&dev->ctxlist_mutex);
- if (!list_empty(&dev->ctxlist->head)) {
- drm_ctx_list_t *pos, *n;
+ if (!list_empty(&dev->ctxlist)) {
+ struct drm_ctx_list *pos, *n;
- list_for_each_entry_safe(pos, n, &dev->ctxlist->head, head) {
- if (pos->handle == ctx.handle) {
+ list_for_each_entry_safe(pos, n, &dev->ctxlist, head) {
+ if (pos->handle == ctx->handle) {
list_del(&pos->head);
drm_free(pos, sizeof(*pos), DRM_MEM_CTXLIST);
--dev->ctx_count;
git.openpandora.org / pandora-kernel.git / blobdiff