diff options
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-dma-sg.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-sg.c | 64 |
1 files changed, 13 insertions, 51 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c index 9985c89f0..bd82d709e 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c @@ -30,10 +30,6 @@ module_param(debug, int, 0644); printk(KERN_DEBUG "vb2-dma-sg: " fmt, ## arg); \ } while (0) -struct vb2_dma_sg_conf { - struct device *dev; -}; - struct vb2_dma_sg_buf { struct device *dev; void *vaddr; @@ -99,19 +95,16 @@ static int vb2_dma_sg_alloc_compacted(struct vb2_dma_sg_buf *buf, return 0; } -static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size, - enum dma_data_direction dma_dir, gfp_t gfp_flags) +static void *vb2_dma_sg_alloc(struct device *dev, unsigned long dma_attrs, + unsigned long size, enum dma_data_direction dma_dir, + gfp_t gfp_flags) { - struct vb2_dma_sg_conf *conf = alloc_ctx; struct vb2_dma_sg_buf *buf; struct sg_table *sgt; int ret; int num_pages; - DEFINE_DMA_ATTRS(attrs); - dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs); - - if (WARN_ON(alloc_ctx == NULL)) + if (WARN_ON(dev == NULL)) return NULL; buf = kzalloc(sizeof *buf, GFP_KERNEL); if (!buf) @@ -140,7 +133,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size, goto fail_table_alloc; /* Prevent the device from being released while the buffer is used */ - buf->dev = get_device(conf->dev); + buf->dev = get_device(dev); sgt = &buf->sg_table; /* @@ -148,7 +141,7 @@ static void *vb2_dma_sg_alloc(void *alloc_ctx, unsigned long size, * prepare() memop is called. */ sgt->nents = dma_map_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents, - buf->dma_dir, &attrs); + buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC); if (!sgt->nents) goto fail_map; @@ -183,13 +176,10 @@ static void vb2_dma_sg_put(void *buf_priv) int i = buf->num_pages; if (atomic_dec_and_test(&buf->refcount)) { - DEFINE_DMA_ATTRS(attrs); - - dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs); dprintk(1, "%s: Freeing buffer of %d pages\n", __func__, buf->num_pages); dma_unmap_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents, - buf->dma_dir, &attrs); + buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC); if (buf->vaddr) vm_unmap_ram(buf->vaddr, buf->num_pages); sg_free_table(buf->dma_sgt); @@ -226,23 +216,20 @@ static void vb2_dma_sg_finish(void *buf_priv) dma_sync_sg_for_cpu(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir); } -static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr, +static void *vb2_dma_sg_get_userptr(struct device *dev, unsigned long vaddr, unsigned long size, enum dma_data_direction dma_dir) { - struct vb2_dma_sg_conf *conf = alloc_ctx; struct vb2_dma_sg_buf *buf; struct sg_table *sgt; - DEFINE_DMA_ATTRS(attrs); struct frame_vector *vec; - dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs); buf = kzalloc(sizeof *buf, GFP_KERNEL); if (!buf) return NULL; buf->vaddr = NULL; - buf->dev = conf->dev; + buf->dev = dev; buf->dma_dir = dma_dir; buf->offset = vaddr & ~PAGE_MASK; buf->size = size; @@ -267,7 +254,7 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr, * prepare() memop is called. */ sgt->nents = dma_map_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents, - buf->dma_dir, &attrs); + buf->dma_dir, DMA_ATTR_SKIP_CPU_SYNC); if (!sgt->nents) goto userptr_fail_map; @@ -291,14 +278,11 @@ static void vb2_dma_sg_put_userptr(void *buf_priv) struct vb2_dma_sg_buf *buf = buf_priv; struct sg_table *sgt = &buf->sg_table; int i = buf->num_pages; - DEFINE_DMA_ATTRS(attrs); - - dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs); dprintk(1, "%s: Releasing userspace buffer of %d pages\n", __func__, buf->num_pages); dma_unmap_sg_attrs(buf->dev, sgt->sgl, sgt->orig_nents, buf->dma_dir, - &attrs); + DMA_ATTR_SKIP_CPU_SYNC); if (buf->vaddr) vm_unmap_ram(buf->vaddr, buf->num_pages); sg_free_table(buf->dma_sgt); @@ -616,10 +600,9 @@ static void vb2_dma_sg_detach_dmabuf(void *mem_priv) kfree(buf); } -static void *vb2_dma_sg_attach_dmabuf(void *alloc_ctx, struct dma_buf *dbuf, +static void *vb2_dma_sg_attach_dmabuf(struct device *dev, struct dma_buf *dbuf, unsigned long size, enum dma_data_direction dma_dir) { - struct vb2_dma_sg_conf *conf = alloc_ctx; struct vb2_dma_sg_buf *buf; struct dma_buf_attachment *dba; @@ -630,7 +613,7 @@ static void *vb2_dma_sg_attach_dmabuf(void *alloc_ctx, struct dma_buf *dbuf, if (!buf) return ERR_PTR(-ENOMEM); - buf->dev = conf->dev; + buf->dev = dev; /* create attachment for the dmabuf with the user device */ dba = dma_buf_attach(dbuf, buf->dev); if (IS_ERR(dba)) { @@ -672,27 +655,6 @@ const struct vb2_mem_ops vb2_dma_sg_memops = { }; EXPORT_SYMBOL_GPL(vb2_dma_sg_memops); -void *vb2_dma_sg_init_ctx(struct device *dev) -{ - struct vb2_dma_sg_conf *conf; - - conf = kzalloc(sizeof(*conf), GFP_KERNEL); - if (!conf) - return ERR_PTR(-ENOMEM); - - conf->dev = dev; - - return conf; -} -EXPORT_SYMBOL_GPL(vb2_dma_sg_init_ctx); - -void vb2_dma_sg_cleanup_ctx(void *alloc_ctx) -{ - if (!IS_ERR_OR_NULL(alloc_ctx)) - kfree(alloc_ctx); -} -EXPORT_SYMBOL_GPL(vb2_dma_sg_cleanup_ctx); - MODULE_DESCRIPTION("dma scatter/gather memory handling routines for videobuf2"); MODULE_AUTHOR("Andrzej Pietrasiewicz"); MODULE_LICENSE("GPL"); |