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Commit 1b28753a authored by Amol Jadi's avatar Amol Jadi Committed by Gerrit - the friendly Code Review server
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msm: adsprpc: add support for LLC allocation 



Set appropriate dma attribute for LLC allocation based on incoming
request.

Change-Id: I3d4a938d2404f720910b567b50ec8c685d500c17
Signed-off-by: default avatarAmol Jadi <amoljadi@codeaurora.org>
parent 773b595b

drivers/char/adsprpc.c

+7 −2
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ 
#define ADSP_MMAP_HEAP_ADDR 4

#define ADSP_MMAP_REMOTE_HEAP_ADDR 8

#define ADSP_MMAP_ADD_PAGES 0x1000

#define ADSP_MMAP_ADD_PAGES_LLC  0x3000

#define FASTRPC_DMAHANDLE_NOMAP (16)



#define FASTRPC_ENOSUCH 39
@@ -2789,7 +2790,8 @@ static int fastrpc_internal_munmap(struct fastrpc_file *fl, 


	spin_lock(&fl->hlock);

	hlist_for_each_entry_safe(rbuf, n, &fl->remote_bufs, hn_rem) {

		if (rbuf->raddr && (rbuf->flags == ADSP_MMAP_ADD_PAGES)) {

		if (rbuf->raddr && ((rbuf->flags == ADSP_MMAP_ADD_PAGES) ||

				    (rbuf->flags == ADSP_MMAP_ADD_PAGES_LLC))) {

			if ((rbuf->raddr == ud->vaddrout) &&

				(rbuf->size == ud->size)) {

				free = rbuf;
@@ -2881,7 +2883,8 @@ static int fastrpc_internal_mmap(struct fastrpc_file *fl, 
		goto bail;

	}

	mutex_lock(&fl->internal_map_mutex);

	if (ud->flags == ADSP_MMAP_ADD_PAGES) {

	if ((ud->flags == ADSP_MMAP_ADD_PAGES) ||

	    (ud->flags == ADSP_MMAP_ADD_PAGES_LLC)) {

		if (ud->vaddrin) {

			err = -EINVAL;

			pr_err("adsprpc: %s: %s: ERROR: adding user allocated pages is not supported\n",
@@ -2892,6 +2895,8 @@ static int fastrpc_internal_mmap(struct fastrpc_file *fl, 
					DMA_ATTR_DELAYED_UNMAP |

					DMA_ATTR_NO_KERNEL_MAPPING |

					DMA_ATTR_FORCE_NON_COHERENT;

		if (ud->flags == ADSP_MMAP_ADD_PAGES_LLC)

			dma_attr |= DMA_ATTR_IOMMU_USE_UPSTREAM_HINT;

		err = fastrpc_buf_alloc(fl, ud->size, dma_attr, ud->flags,

								1, &rbuf);

		if (err)