diff options
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_gem.c | 105 |
1 files changed, 18 insertions, 87 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index 5ffe3865614d..baa714c8ec70 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -33,9 +33,7 @@ /* note: we use upper 8 bits of flags for driver-internal flags: */ #define OMAP_BO_MEM_DMA_API 0x01000000 /* memory allocated with the dma_alloc_* API */ #define OMAP_BO_MEM_SHMEM 0x02000000 /* memory allocated through shmem backing */ -#define OMAP_BO_MEM_EXT 0x04000000 /* memory allocated externally */ #define OMAP_BO_MEM_DMABUF 0x08000000 /* memory imported from a dmabuf */ -#define OMAP_BO_EXT_SYNC 0x10000000 /* externally allocated sync object */ struct omap_gem_object { struct drm_gem_object base; @@ -107,17 +105,7 @@ struct omap_gem_object { * sync-object allocated on demand (if needed) * * Per-buffer sync-object for tracking pending and completed hw/dma - * read and write operations. The layout in memory is dictated by - * the SGX firmware, which uses this information to stall the command - * stream if a surface is not ready yet. - * - * Note that when buffer is used by SGX, the sync-object needs to be - * allocated from a special heap of sync-objects. This way many sync - * objects can be packed in a page, and not waste GPU virtual address - * space. Because of this we have to have a omap_gem_set_sync_object() - * API to allow replacement of the syncobj after it has (potentially) - * already been allocated. A bit ugly but I haven't thought of a - * better alternative. + * read and write operations. */ struct { uint32_t write_pending; @@ -1180,20 +1168,6 @@ unlock: return ret; } -/* it is a bit lame to handle updates in this sort of polling way, but - * in case of PVR, the GPU can directly update read/write complete - * values, and not really tell us which ones it updated.. this also - * means that sync_lock is not quite sufficient. So we'll need to - * do something a bit better when it comes time to add support for - * separate 2d hw.. - */ -void omap_gem_op_update(void) -{ - spin_lock(&sync_lock); - sync_op_update(); - spin_unlock(&sync_lock); -} - /* mark the start of read and/or write operation */ int omap_gem_op_start(struct drm_gem_object *obj, enum omap_gem_op op) { @@ -1261,7 +1235,7 @@ int omap_gem_op_sync(struct drm_gem_object *obj, enum omap_gem_op op) * is currently blocked.. fxn() can be called from any context * * (TODO for now fxn is called back from whichever context calls - * omap_gem_op_update().. but this could be better defined later + * omap_gem_op_finish().. but this could be better defined later * if needed) * * TODO more code in common w/ _sync().. @@ -1303,43 +1277,6 @@ int omap_gem_op_async(struct drm_gem_object *obj, enum omap_gem_op op, return 0; } -/* special API so PVR can update the buffer to use a sync-object allocated - * from it's sync-obj heap. Only used for a newly allocated (from PVR's - * perspective) sync-object, so we overwrite the new syncobj w/ values - * from the already allocated syncobj (if there is one) - */ -int omap_gem_set_sync_object(struct drm_gem_object *obj, void *syncobj) -{ - struct omap_gem_object *omap_obj = to_omap_bo(obj); - int ret = 0; - - spin_lock(&sync_lock); - - if ((omap_obj->flags & OMAP_BO_EXT_SYNC) && !syncobj) { - /* clearing a previously set syncobj */ - syncobj = kmemdup(omap_obj->sync, sizeof(*omap_obj->sync), - GFP_ATOMIC); - if (!syncobj) { - ret = -ENOMEM; - goto unlock; - } - omap_obj->flags &= ~OMAP_BO_EXT_SYNC; - omap_obj->sync = syncobj; - } else if (syncobj && !(omap_obj->flags & OMAP_BO_EXT_SYNC)) { - /* replacing an existing syncobj */ - if (omap_obj->sync) { - memcpy(syncobj, omap_obj->sync, sizeof(*omap_obj->sync)); - kfree(omap_obj->sync); - } - omap_obj->flags |= OMAP_BO_EXT_SYNC; - omap_obj->sync = syncobj; - } - -unlock: - spin_unlock(&sync_lock); - return ret; -} - /* ----------------------------------------------------------------------------- * Constructor & Destructor */ @@ -1363,28 +1300,23 @@ void omap_gem_free_object(struct drm_gem_object *obj) */ WARN_ON(omap_obj->paddr_cnt > 0); - /* don't free externally allocated backing memory */ - if (!(omap_obj->flags & OMAP_BO_MEM_EXT)) { - if (omap_obj->pages) { - if (omap_obj->flags & OMAP_BO_MEM_DMABUF) - kfree(omap_obj->pages); - else - omap_gem_detach_pages(obj); - } + if (omap_obj->pages) { + if (omap_obj->flags & OMAP_BO_MEM_DMABUF) + kfree(omap_obj->pages); + else + omap_gem_detach_pages(obj); + } - if (omap_obj->flags & OMAP_BO_MEM_DMA_API) { - dma_free_writecombine(dev->dev, obj->size, - omap_obj->vaddr, omap_obj->paddr); - } else if (omap_obj->vaddr) { - vunmap(omap_obj->vaddr); - } else if (obj->import_attach) { - drm_prime_gem_destroy(obj, omap_obj->sgt); - } + if (omap_obj->flags & OMAP_BO_MEM_DMA_API) { + dma_free_writecombine(dev->dev, obj->size, + omap_obj->vaddr, omap_obj->paddr); + } else if (omap_obj->vaddr) { + vunmap(omap_obj->vaddr); + } else if (obj->import_attach) { + drm_prime_gem_destroy(obj, omap_obj->sgt); } - /* don't free externally allocated syncobj */ - if (!(omap_obj->flags & OMAP_BO_EXT_SYNC)) - kfree(omap_obj->sync); + kfree(omap_obj->sync); drm_gem_object_release(obj); @@ -1429,10 +1361,9 @@ struct drm_gem_object *omap_gem_new(struct drm_device *dev, * use contiguous memory only if no TILER is available. */ flags |= OMAP_BO_MEM_DMA_API; - } else if (!(flags & (OMAP_BO_MEM_EXT | OMAP_BO_MEM_DMABUF))) { + } else if (!(flags & OMAP_BO_MEM_DMABUF)) { /* - * All other buffers not backed by external memory or dma_buf - * are shmem-backed. + * All other buffers not backed by dma_buf are shmem-backed. */ flags |= OMAP_BO_MEM_SHMEM; } |