diff options
Diffstat (limited to 'linux-core')
-rw-r--r-- | linux-core/drmP.h | 9 | ||||
-rw-r--r-- | linux-core/drm_bufs.c | 290 | ||||
-rw-r--r-- | linux-core/drm_drv.c | 92 | ||||
-rw-r--r-- | linux-core/radeon_drv.c | 1 |
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, |