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-rw-r--r--linux-core/drmP.h9
-rw-r--r--linux-core/drm_bufs.c290
-rw-r--r--linux-core/drm_drv.c92
-rw-r--r--linux-core/radeon_drv.c1
4 files changed, 146 insertions, 246 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 9c0e5b84..5ada94ef 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -572,7 +572,6 @@ struct drm_driver {
/* variables */
u32 driver_features;
int dev_priv_size;
- int permanent_maps;
drm_ioctl_desc_t *ioctls;
int num_ioctls;
struct file_operations fops;
@@ -864,15 +863,13 @@ extern int drm_addbufs_pci(drm_device_t * dev, drm_buf_desc_t * request);
extern int drm_addbufs_fb (drm_device_t * dev, drm_buf_desc_t * request);
extern int drm_addmap(drm_device_t * dev, unsigned int offset,
unsigned int size, drm_map_type_t type,
- drm_map_flags_t flags, drm_map_t ** map_ptr);
+ drm_map_flags_t flags, drm_local_map_t ** map_ptr);
extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
-extern int drm_rmmap(drm_device_t *dev, void *handle);
+extern int drm_rmmap(drm_device_t *dev, drm_local_map_t *map);
+extern int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map);
extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
-extern int drm_initmap(drm_device_t * dev, unsigned int offset,
- unsigned int size, unsigned int resource, int type,
- int flags);
extern int drm_addbufs(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg);
extern int drm_infobufs(struct inode *inode, struct file *filp,
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c
index d60d0823..e5d4c6bf 100644
--- a/linux-core/drm_bufs.c
+++ b/linux-core/drm_bufs.c
@@ -48,66 +48,21 @@ unsigned long drm_get_resource_len(drm_device_t *dev, unsigned int resource)
}
EXPORT_SYMBOL(drm_get_resource_len);
- /**
- * Adjusts the memory offset to its absolute value according to the mapping
- * type. Adds the map to the map list drm_device::maplist. Adds MTRR's where
- * applicable and if supported by the kernel.
- */
-int drm_initmap(drm_device_t * dev, unsigned int offset, unsigned int size,
- unsigned int resource, int type, int flags)
+static drm_local_map_t *drm_find_matching_map(drm_device_t *dev,
+ drm_local_map_t *map)
{
- drm_map_t *map;
- drm_map_list_t *list;
-
- DRM_DEBUG("\n");
-
- if ((offset & (~PAGE_MASK)) || (size & (~PAGE_MASK)))
- return -EINVAL;
-#if !defined(__sparc__) && !defined(__alpha__)
- if (offset + size < offset || offset < virt_to_phys(high_memory))
- return -EINVAL;
-#endif
- if (!(list = drm_alloc(sizeof(*list), DRM_MEM_MAPS)))
- return -ENOMEM;
- memset(list, 0, sizeof(*list));
-
- if (!(map = drm_alloc(sizeof(*map), DRM_MEM_MAPS))) {
- drm_free(list, sizeof(*list), DRM_MEM_MAPS);
- return -ENOMEM;
- }
-
- *map = (drm_map_t) {
- .offset = offset,.size = size,.type = type,.flags =
- flags,.mtrr = -1,.handle = 0,};
- list->map = map;
-
- DRM_DEBUG("initmap offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- map->offset, map->size, map->type);
+ struct list_head *list;
-#ifdef __alpha__
- map->offset += dev->hose->mem_space->start;
-#endif
- if (drm_core_has_MTRR(dev)) {
- if (map->type == _DRM_FRAME_BUFFER ||
- (map->flags & _DRM_WRITE_COMBINING)) {
- map->mtrr = mtrr_add(map->offset, map->size,
- MTRR_TYPE_WRCOMB, 1);
+ list_for_each(list, &dev->maplist->head) {
+ drm_map_list_t *entry = list_entry(list, drm_map_list_t, head);
+ if (entry->map && map->type == entry->map->type &&
+ entry->map->offset == map->offset) {
+ return entry->map;
}
}
- if (map->type == _DRM_REGISTERS)
- map->handle = drm_ioremap(map->offset, map->size, dev);
-
- down(&dev->struct_sem);
- list_add(&list->head, &dev->maplist->head);
- up(&dev->struct_sem);
-
- dev->driver->permanent_maps = 1;
- DRM_DEBUG("finished\n");
-
- return 0;
+ return NULL;
}
-EXPORT_SYMBOL(drm_initmap);
#ifdef CONFIG_COMPAT
/*
@@ -133,12 +88,12 @@ static unsigned int map32_handle = 0x10000000;
*/
int drm_addmap(drm_device_t * dev, unsigned int offset,
unsigned int size, drm_map_type_t type,
- drm_map_flags_t flags, drm_map_t ** map_ptr)
+ drm_map_flags_t flags, drm_local_map_t ** map_ptr)
{
drm_map_t *map;
drm_map_list_t *list;
drm_dma_handle_t *dmah;
-
+ drm_local_map_t *found_map;
map = drm_alloc(sizeof(*map), DRM_MEM_MAPS);
if (!map)
@@ -168,65 +123,45 @@ int drm_addmap(drm_device_t * dev, unsigned int offset,
switch (map->type) {
case _DRM_REGISTERS:
- case _DRM_FRAME_BUFFER:{
- /* after all the drivers switch to permanent mapping this should just return an error */
- struct list_head *_list;
-
- /* If permanent maps are implemented, maps must match */
- if (dev->driver->permanent_maps) {
- DRM_DEBUG
- ("Looking for: offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- map->offset, map->size, map->type);
- list_for_each(_list, &dev->maplist->head) {
- drm_map_list_t *_entry =
- list_entry(_list, drm_map_list_t,
- head);
- DRM_DEBUG
- ("Checking: offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- _entry->map->offset,
- _entry->map->size,
- _entry->map->type);
- if (_entry->map
- && map->type == _entry->map->type
- && map->offset ==
- _entry->map->offset) {
- _entry->map->size = map->size;
- drm_free(map, sizeof(*map),
- DRM_MEM_MAPS);
- map = _entry->map;
- DRM_DEBUG
- ("Found existing: offset = 0x%08lx, size = 0x%08lx, type = %d\n",
- map->offset, map->size,
- map->type);
- goto found_it;
- }
- }
- /* addmap didn't match an existing permanent map, that's an error */
- return -EINVAL;
- }
+ case _DRM_FRAME_BUFFER:
#if !defined(__sparc__) && !defined(__alpha__) && !defined(__ia64__)
- if (map->offset + map->size < map->offset ||
- map->offset < virt_to_phys(high_memory)) {
- drm_free(map, sizeof(*map), DRM_MEM_MAPS);
- return -EINVAL;
- }
+ if (map->offset + map->size < map->offset ||
+ map->offset < virt_to_phys(high_memory)) {
+ drm_free(map, sizeof(*map), DRM_MEM_MAPS);
+ return -EINVAL;
+ }
#endif
#ifdef __alpha__
- map->offset += dev->hose->mem_space->start;
+ map->offset += dev->hose->mem_space->start;
#endif
- if (drm_core_has_MTRR(dev)) {
- if (map->type == _DRM_FRAME_BUFFER ||
- (map->flags & _DRM_WRITE_COMBINING)) {
- map->mtrr =
- mtrr_add(map->offset, map->size,
- MTRR_TYPE_WRCOMB, 1);
- }
+ /* Some drivers preinitialize some maps, without the X Server
+ * needing to be aware of it. Therefore, we just return success
+ * when the server tries to create a duplicate map.
+ */
+ found_map = drm_find_matching_map(dev, map);
+ if (found_map != NULL) {
+ if (found_map->size != map->size) {
+ DRM_DEBUG("Matching maps of type %d with "
+ "mismatched sizes, (%ld vs %ld)\n",
+ map->type, map->size, found_map->size);
+ found_map->size = map->size;
}
- if (map->type == _DRM_REGISTERS)
- map->handle =
- drm_ioremap(map->offset, map->size, dev);
- break;
+
+ drm_free(map, sizeof(*map), DRM_MEM_MAPS);
+ *map_ptr = found_map;
+ return 0;
}
+
+ if (drm_core_has_MTRR(dev)) {
+ if (map->type == _DRM_FRAME_BUFFER ||
+ (map->flags & _DRM_WRITE_COMBINING)) {
+ map->mtrr = mtrr_add(map->offset, map->size,
+ MTRR_TYPE_WRCOMB, 1);
+ }
+ }
+ if (map->type == _DRM_REGISTERS)
+ map->handle = drm_ioremap(map->offset, map->size, dev);
+ break;
case _DRM_SHM:
map->handle = vmalloc_32(map->size);
DRM_DEBUG("%lu %d %p\n",
@@ -300,7 +235,7 @@ int drm_addmap(drm_device_t * dev, unsigned int offset,
#endif
up(&dev->struct_sem);
- found_it:
+
*map_ptr = map;
return 0;
}
@@ -356,88 +291,127 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp,
*
* \sa drm_addmap
*/
-int drm_rmmap(drm_device_t *dev, void *handle)
+int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map)
{
struct list_head *list;
drm_map_list_t *r_list = NULL;
- drm_vma_entry_t *pt, *prev;
- drm_map_t *map;
- int found_maps = 0;
+ drm_dma_handle_t dmah;
-
- down(&dev->struct_sem);
- list = &dev->maplist->head;
+ /* Find the list entry for the map and remove it */
list_for_each(list, &dev->maplist->head) {
r_list = list_entry(list, drm_map_list_t, head);
- if (r_list->map &&
- r_list->map->handle == handle &&
- r_list->map->flags & _DRM_REMOVABLE)
+ if (r_list->map == map) {
+ list_del(list);
+ drm_free(list, sizeof(*list), DRM_MEM_MAPS);
break;
+ }
}
- /* List has wrapped around to the head pointer, or its empty we didn't
- * find anything.
+ /* List has wrapped around to the head pointer, or it's empty and we
+ * didn't find anything.
*/
if (list == (&dev->maplist->head)) {
- up(&dev->struct_sem);
return -EINVAL;
}
- map = r_list->map;
- /* Register and framebuffer maps are permanent */
- if ((map->type == _DRM_REGISTERS) || (map->type == _DRM_FRAME_BUFFER)) {
- up(&dev->struct_sem);
- return 0;
+ switch (map->type) {
+ case _DRM_REGISTERS:
+ drm_ioremapfree(map->handle, map->size, dev);
+ /* FALLTHROUGH */
+ case _DRM_FRAME_BUFFER:
+ if (drm_core_has_MTRR(dev) && map->mtrr >= 0) {
+ int retcode;
+ retcode = mtrr_del(map->mtrr, map->offset,
+ map->size);
+ DRM_DEBUG ("mtrr_del=%d\n", retcode);
+ }
+ break;
+ case _DRM_SHM:
+ vfree(map->handle);
+ break;
+ case _DRM_AGP:
+ case _DRM_SCATTER_GATHER:
+ break;
+ case _DRM_CONSISTENT:
+ dmah.vaddr = map->handle;
+ dmah.busaddr = map->offset;
+ dmah.size = map->size;
+ __drm_pci_free(dev, &dmah);
+ break;
}
- list_del(list);
- drm_free(list, sizeof(*list), DRM_MEM_MAPS);
+ drm_free(map, sizeof(*map), DRM_MEM_MAPS);
- for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
- if (pt->vma->vm_private_data == map)
- found_maps++;
- }
+ return 0;
+}
+EXPORT_SYMBOL(drm_rmmap_locked);
- if (!found_maps) {
- drm_dma_handle_t dmah;
+int drm_rmmap(drm_device_t *dev, drm_local_map_t *map)
+{
+ int ret;
- switch (map->type) {
- case _DRM_REGISTERS:
- case _DRM_FRAME_BUFFER:
- break; /* Can't get here, make compiler happy */
- case _DRM_SHM:
- vfree(map->handle);
- break;
- case _DRM_AGP:
- case _DRM_SCATTER_GATHER:
- break;
- case _DRM_CONSISTENT:
- dmah.vaddr = map->handle;
- dmah.busaddr = map->offset;
- dmah.size = map->size;
- __drm_pci_free(dev, &dmah);
- break;
- }
- drm_free(map, sizeof(*map), DRM_MEM_MAPS);
- }
+ down(&dev->struct_sem);
+ ret = drm_rmmap_locked(dev, map);
up(&dev->struct_sem);
- return 0;
+
+ return ret;
}
EXPORT_SYMBOL(drm_rmmap);
+/* The rmmap ioctl appears to be unnecessary. All mappings are torn down on
+ * the last close of the device, and this is necessary for cleanup when things
+ * exit uncleanly. Therefore, having userland manually remove mappings seems
+ * like a pointless exercise since they're going away anyway.
+ *
+ * One use case might be after addmap is allowed for normal users for SHM and
+ * gets used by drivers that the server doesn't need to care about. This seems
+ * unlikely.
+ */
int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev;
drm_map_t request;
-
+ drm_local_map_t *map;
+ struct list_head *list;
+ int ret;
if (copy_from_user(&request, (drm_map_t __user *) arg, sizeof(request))) {
return -EFAULT;
}
- return drm_rmmap(dev, request.handle);
+ down(&dev->struct_sem);
+ list_for_each(list, &dev->maplist->head) {
+ drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
+
+ if (r_list->map &&
+ r_list->map->handle == request.handle &&
+ r_list->map->flags & _DRM_REMOVABLE) {
+ map = r_list->map;
+ break;
+ }
+ }
+
+ /* List has wrapped around to the head pointer, or its empty we didn't
+ * find anything.
+ */
+ if (list == (&dev->maplist->head)) {
+ up(&dev->struct_sem);
+ return -EINVAL;
+ }
+
+ /* Register and framebuffer maps are permanent */
+ if ((map->type == _DRM_REGISTERS) || (map->type == _DRM_FRAME_BUFFER)) {
+ up(&dev->struct_sem);
+ return 0;
+ }
+
+ ret = drm_rmmap_locked(dev, map);
+
+ up(&dev->struct_sem);
+
+ return ret;
}
/**
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index 6ed5ce1e..d72d1c37 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -135,9 +135,7 @@ drm_ioctl_desc_t drm_ioctls[] = {
int drm_takedown(drm_device_t * dev)
{
drm_magic_entry_t *pt, *next;
- drm_map_t *map;
drm_map_list_t *r_list;
- struct list_head *list, *list_next;
drm_vma_entry_t *vma, *vma_next;
int i;
@@ -145,6 +143,7 @@ int drm_takedown(drm_device_t * dev)
if (dev->driver->pretakedown)
dev->driver->pretakedown(dev);
+ DRM_DEBUG("driver pretakedown completed\n");
if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
@@ -195,6 +194,10 @@ int drm_takedown(drm_device_t * dev)
dev->agp->acquired = 0;
dev->agp->enabled = 0;
}
+ if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
+ drm_sg_cleanup(dev->sg);
+ dev->sg = NULL;
+ }
/* Clear vma list (only built for debugging) */
if (dev->vmalist) {
@@ -206,45 +209,10 @@ int drm_takedown(drm_device_t * dev)
}
if (dev->maplist) {
- list_for_each_safe(list, list_next, &dev->maplist->head) {
- r_list = (drm_map_list_t *) list;
-
- if ((map = r_list->map)) {
- drm_dma_handle_t dmah;
-
- switch (map->type) {
- case _DRM_REGISTERS:
- case _DRM_FRAME_BUFFER:
- continue;
-
- case _DRM_SHM:
- vfree(map->handle);
- break;
-
- case _DRM_AGP:
- /* Do nothing here, because this is all
- * handled in the AGP/GART driver.
- */
- break;
- case _DRM_SCATTER_GATHER:
- /* Handle it */
- if (drm_core_check_feature
- (dev, DRIVER_SG) && dev->sg) {
- drm_sg_cleanup(dev->sg);
- dev->sg = NULL;
- }
- break;
- case _DRM_CONSISTENT:
- dmah.vaddr = map->handle;
- dmah.busaddr = map->offset;
- dmah.size = map->size;
- __drm_pci_free(dev, &dmah);
- break;
- }
- drm_free(map, sizeof(*map), DRM_MEM_MAPS);
- }
- list_del(list);
- drm_free(r_list, sizeof(*r_list), DRM_MEM_MAPS);
+ while (!list_empty(&dev->maplist->head)) {
+ struct list_head *list = dev->maplist->head.next;
+ r_list = list_entry(list, drm_map_list_t, head);
+ drm_rmmap_locked(dev, r_list->map);
}
}
@@ -275,6 +243,7 @@ int drm_takedown(drm_device_t * dev)
}
up(&dev->struct_sem);
+ DRM_DEBUG("takedown completed\n");
return 0;
}
@@ -368,9 +337,6 @@ EXPORT_SYMBOL(drm_init);
*/
static void __exit drm_cleanup(drm_device_t * dev)
{
- drm_map_t *map;
- drm_map_list_t *r_list;
- struct list_head *list, *list_next;
DRM_DEBUG("\n");
if (!dev) {
@@ -381,44 +347,6 @@ static void __exit drm_cleanup(drm_device_t * dev)
drm_takedown(dev);
if (dev->maplist) {
- list_for_each_safe(list, list_next, &dev->maplist->head) {
- r_list = (drm_map_list_t *) list;
-
- if ((map = r_list->map)) {
- switch (map->type) {
- case _DRM_REGISTERS:
- drm_ioremapfree(map->handle, map->size,
- dev);
- break;
-
- case _DRM_FRAME_BUFFER:
- if (drm_core_has_MTRR(dev)) {
- if (map->mtrr >= 0) {
- int retcode;
- retcode =
- mtrr_del(map->mtrr,
- map->
- offset,
- map->size);
- DRM_DEBUG
- ("mtrr_del=%d\n",
- retcode);
- }
- }
- break;
-
- case _DRM_SHM:
- case _DRM_AGP:
- case _DRM_SCATTER_GATHER:
- case _DRM_CONSISTENT:
- DRM_DEBUG("Extra maplist item\n");
- break;
- }
- drm_free(map, sizeof(*map), DRM_MEM_MAPS);
- }
- list_del(list);
- drm_free(r_list, sizeof(*r_list), DRM_MEM_MAPS);
- }
drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
dev->maplist = NULL;
}
diff --git a/linux-core/radeon_drv.c b/linux-core/radeon_drv.c
index 7b1aa59e..c26d887d 100644
--- a/linux-core/radeon_drv.c
+++ b/linux-core/radeon_drv.c
@@ -77,6 +77,7 @@ static struct drm_driver driver = {
DRIVER_IRQ_VBL,
.dev_priv_size = sizeof(drm_radeon_buf_priv_t),
.preinit = radeon_preinit,
+ .presetup = radeon_presetup,
.postcleanup = radeon_postcleanup,
.prerelease = radeon_driver_prerelease,
.pretakedown = radeon_driver_pretakedown,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 17:56:03 +0000