Now that we call dma_map in the dma_buf API callbacks there is no need to use the existing cache APIs. Remove the sync ioctl and the existing bad dma_sync calls. Explicit caching can be handled with the dma_buf sync API.
Signed-off-by: Laura Abbott labbott@redhat.com --- drivers/staging/android/ion/compat_ion.c | 1 - drivers/staging/android/ion/ion-ioctl.c | 6 ---- drivers/staging/android/ion/ion.c | 40 ------------------------- drivers/staging/android/ion/ion_carveout_heap.c | 6 ---- drivers/staging/android/ion/ion_chunk_heap.c | 6 ---- drivers/staging/android/ion/ion_page_pool.c | 3 -- drivers/staging/android/ion/ion_priv.h | 13 -------- drivers/staging/android/ion/ion_system_heap.c | 5 ---- drivers/staging/android/uapi/ion.h | 10 ------- 9 files changed, 90 deletions(-)
diff --git a/drivers/staging/android/ion/compat_ion.c b/drivers/staging/android/ion/compat_ion.c index 9a978d2..b892d3a 100644 --- a/drivers/staging/android/ion/compat_ion.c +++ b/drivers/staging/android/ion/compat_ion.c @@ -186,7 +186,6 @@ long compat_ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) case ION_IOC_SHARE: case ION_IOC_MAP: case ION_IOC_IMPORT: - case ION_IOC_SYNC: return filp->f_op->unlocked_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); default: diff --git a/drivers/staging/android/ion/ion-ioctl.c b/drivers/staging/android/ion/ion-ioctl.c index 5b2e93f..e096bcd 100644 --- a/drivers/staging/android/ion/ion-ioctl.c +++ b/drivers/staging/android/ion/ion-ioctl.c @@ -51,7 +51,6 @@ static int validate_ioctl_arg(unsigned int cmd, union ion_ioctl_arg *arg) static unsigned int ion_ioctl_dir(unsigned int cmd) { switch (cmd) { - case ION_IOC_SYNC: case ION_IOC_FREE: case ION_IOC_CUSTOM: return _IOC_WRITE; @@ -146,11 +145,6 @@ long ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) data.handle.handle = handle->id; break; } - case ION_IOC_SYNC: - { - ret = ion_sync_for_device(client, data.fd.fd); - break; - } case ION_IOC_CUSTOM: { if (!dev->custom_ioctl) diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index 226ea1f..8757164 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -863,22 +863,6 @@ static void ion_unmap_dma_buf(struct dma_buf_attachment *attachment, dma_unmap_sg(attachment->dev, table->sgl, table->nents, direction); }
-void ion_pages_sync_for_device(struct device *dev, struct page *page, - size_t size, enum dma_data_direction dir) -{ - struct scatterlist sg; - - sg_init_table(&sg, 1); - sg_set_page(&sg, page, size, 0); - /* - * This is not correct - sg_dma_address needs a dma_addr_t that is valid - * for the targeted device, but this works on the currently targeted - * hardware. - */ - sg_dma_address(&sg) = page_to_phys(page); - dma_sync_sg_for_device(dev, &sg, 1, dir); -} - static int ion_mmap(struct dma_buf *dmabuf, struct vm_area_struct *vma) { struct ion_buffer *buffer = dmabuf->priv; @@ -1097,30 +1081,6 @@ struct ion_handle *ion_import_dma_buf_fd(struct ion_client *client, int fd) } EXPORT_SYMBOL(ion_import_dma_buf_fd);
-int ion_sync_for_device(struct ion_client *client, int fd) -{ - struct dma_buf *dmabuf; - struct ion_buffer *buffer; - - dmabuf = dma_buf_get(fd); - if (IS_ERR(dmabuf)) - return PTR_ERR(dmabuf); - - /* if this memory came from ion */ - if (dmabuf->ops != &dma_buf_ops) { - pr_err("%s: can not sync dmabuf from another exporter\n", - __func__); - dma_buf_put(dmabuf); - return -EINVAL; - } - buffer = dmabuf->priv; - - dma_sync_sg_for_device(NULL, buffer->sg_table->sgl, - buffer->sg_table->nents, DMA_BIDIRECTIONAL); - dma_buf_put(dmabuf); - return 0; -} - int ion_query_heaps(struct ion_client *client, struct ion_heap_query *query) { struct ion_device *dev = client->dev; diff --git a/drivers/staging/android/ion/ion_carveout_heap.c b/drivers/staging/android/ion/ion_carveout_heap.c index 9bf8e98..e0e360f 100644 --- a/drivers/staging/android/ion/ion_carveout_heap.c +++ b/drivers/staging/android/ion/ion_carveout_heap.c @@ -100,10 +100,6 @@ static void ion_carveout_heap_free(struct ion_buffer *buffer)
ion_heap_buffer_zero(buffer);
- if (ion_buffer_cached(buffer)) - dma_sync_sg_for_device(NULL, table->sgl, table->nents, - DMA_BIDIRECTIONAL); - ion_carveout_free(heap, paddr, buffer->size); sg_free_table(table); kfree(table); @@ -128,8 +124,6 @@ struct ion_heap *ion_carveout_heap_create(struct ion_platform_heap *heap_data) page = pfn_to_page(PFN_DOWN(heap_data->base)); size = heap_data->size;
- ion_pages_sync_for_device(NULL, page, size, DMA_BIDIRECTIONAL); - ret = ion_heap_pages_zero(page, size, pgprot_writecombine(PAGE_KERNEL)); if (ret) return ERR_PTR(ret); diff --git a/drivers/staging/android/ion/ion_chunk_heap.c b/drivers/staging/android/ion/ion_chunk_heap.c index 8c41889..46e13f6 100644 --- a/drivers/staging/android/ion/ion_chunk_heap.c +++ b/drivers/staging/android/ion/ion_chunk_heap.c @@ -101,10 +101,6 @@ static void ion_chunk_heap_free(struct ion_buffer *buffer)
ion_heap_buffer_zero(buffer);
- if (ion_buffer_cached(buffer)) - dma_sync_sg_for_device(NULL, table->sgl, table->nents, - DMA_BIDIRECTIONAL); - for_each_sg(table->sgl, sg, table->nents, i) { gen_pool_free(chunk_heap->pool, page_to_phys(sg_page(sg)), sg->length); @@ -132,8 +128,6 @@ struct ion_heap *ion_chunk_heap_create(struct ion_platform_heap *heap_data) page = pfn_to_page(PFN_DOWN(heap_data->base)); size = heap_data->size;
- ion_pages_sync_for_device(NULL, page, size, DMA_BIDIRECTIONAL); - ret = ion_heap_pages_zero(page, size, pgprot_writecombine(PAGE_KERNEL)); if (ret) return ERR_PTR(ret); diff --git a/drivers/staging/android/ion/ion_page_pool.c b/drivers/staging/android/ion/ion_page_pool.c index aea89c1..532eda7 100644 --- a/drivers/staging/android/ion/ion_page_pool.c +++ b/drivers/staging/android/ion/ion_page_pool.c @@ -30,9 +30,6 @@ static void *ion_page_pool_alloc_pages(struct ion_page_pool *pool)
if (!page) return NULL; - if (!pool->cached) - ion_pages_sync_for_device(NULL, page, PAGE_SIZE << pool->order, - DMA_BIDIRECTIONAL); return page; }
diff --git a/drivers/staging/android/ion/ion_priv.h b/drivers/staging/android/ion/ion_priv.h index 297d99d..4fc7026 100644 --- a/drivers/staging/android/ion/ion_priv.h +++ b/drivers/staging/android/ion/ion_priv.h @@ -440,21 +440,8 @@ void ion_page_pool_free(struct ion_page_pool *pool, struct page *page); int ion_page_pool_shrink(struct ion_page_pool *pool, gfp_t gfp_mask, int nr_to_scan);
-/** - * ion_pages_sync_for_device - cache flush pages for use with the specified - * device - * @dev: the device the pages will be used with - * @page: the first page to be flushed - * @size: size in bytes of region to be flushed - * @dir: direction of dma transfer - */ -void ion_pages_sync_for_device(struct device *dev, struct page *page, - size_t size, enum dma_data_direction dir); - long ion_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
-int ion_sync_for_device(struct ion_client *client, int fd); - struct ion_handle *ion_handle_get_by_id_nolock(struct ion_client *client, int id);
diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c index 6cb2fe7..a33331b 100644 --- a/drivers/staging/android/ion/ion_system_heap.c +++ b/drivers/staging/android/ion/ion_system_heap.c @@ -75,9 +75,6 @@ static struct page *alloc_buffer_page(struct ion_system_heap *heap,
page = ion_page_pool_alloc(pool);
- if (cached) - ion_pages_sync_for_device(NULL, page, PAGE_SIZE << order, - DMA_BIDIRECTIONAL); return page; }
@@ -401,8 +398,6 @@ static int ion_system_contig_heap_allocate(struct ion_heap *heap,
buffer->sg_table = table;
- ion_pages_sync_for_device(NULL, page, len, DMA_BIDIRECTIONAL); - return 0;
free_table: diff --git a/drivers/staging/android/uapi/ion.h b/drivers/staging/android/uapi/ion.h index 14cd873..c3a87a5 100644 --- a/drivers/staging/android/uapi/ion.h +++ b/drivers/staging/android/uapi/ion.h @@ -207,16 +207,6 @@ struct ion_heap_query { #define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
/** - * DOC: ION_IOC_SYNC - syncs a shared file descriptors to memory - * - * Deprecated in favor of using the dma_buf api's correctly (syncing - * will happen automatically when the buffer is mapped to a device). - * If necessary should be used after touching a cached buffer from the cpu, - * this will make the buffer in memory coherent. - */ -#define ION_IOC_SYNC _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data) - -/** * DOC: ION_IOC_CUSTOM - call architecture specific ion ioctl * * Takes the argument of the architecture specific ioctl to call and