On Tue, 2018-05-29 at 12:11 -0700, Ranjani Sridharan wrote:

Hostless pipelines such as the tone pipeline do not need host page table set up.

Signed-off-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com

src/ipc/handler.c | 61 +++++++++++++++++++++++++---------------------- 1 file changed, 33 insertions(+), 28 deletions(-)

diff --git a/src/ipc/handler.c b/src/ipc/handler.c index 581ce9e..0584feb 100644 --- a/src/ipc/handler.c +++ b/src/ipc/handler.c @@ -126,40 +126,45 @@ static int ipc_stream_pcm_params(uint32_t stream) cd->params = pcm_params->params;

#ifdef CONFIG_HOST_PTABLE

• /* no need to set up host page table for hostless pipelines */
• if (cd->comp.type == SOF_COMP_HOST) {

Better to make it

if (type != COMP_X) goto some_code;

This way it reduces the patch size and makes logic easier to follow.

Btw, we have 2 host comp types in the enum.

Liam

• list_init(&elem_list);
  

• /*
  

•  * use DMA to read in compressed page table ringbuffer
  

•  * from host
  

•  */
  

• err = ipc_get_page_descriptors(iipc->dmac, iipc->page_table,
  

• 			       &pcm_params->params.buffer);
  

• if (err < 0) {
  

• 	trace_ipc_error("eAp");
  

• 	goto error;
  

• }
  
  

• list_init(&elem_list);
• /* use DMA to read in compressed page table ringbuffer from host */
• err = ipc_get_page_descriptors(iipc->dmac, iipc->page_table,

• 		       &pcm_params->params.buffer);
  

• if (err < 0) {

• trace_ipc_error("eAp");
  

• goto error;
  

• }
• /* Parse host tables */
• host = (struct sof_ipc_comp_host *)&cd->comp;
• ring_size = pcm_params->params.buffer.size;
• err = ipc_parse_page_descriptors(iipc->page_table,

• 			 &pcm_params->params.buffer,
  

• 			 &elem_list, host->direction);
  

• if (err < 0) {

• trace_ipc_error("eAP");
  

• goto error;
  

• }
• list_for_item(plist, &elem_list) {

• elem = container_of(plist, struct dma_sg_elem, list);
  

• /* Parse host tables */
  

• host = (struct sof_ipc_comp_host *)&cd->comp;
  

• ring_size = pcm_params->params.buffer.size;
  
  

• err = comp_host_buffer(cd, elem, ring_size);
  

• err = ipc_parse_page_descriptors(iipc->page_table,
  

• 				 &pcm_params->params.buffer,
  

• 				 &elem_list, host-
  

...

direction);

if (err < 0) {

• 	trace_ipc_error("ePb");
  

• 	trace_ipc_error("eAP");
  goto error;
  

  }

• list_item_del(&elem->list);
  

• rfree(elem);
  

• list_for_item(plist, &elem_list) {
  

• 	elem = container_of(plist, struct dma_sg_elem, list);
  

• 	err = comp_host_buffer(cd, elem, ring_size);
  

• 	if (err < 0) {
  

• 		trace_ipc_error("ePb");
  

• 		goto error;
  

• 	}
  

• 	list_item_del(&elem->list);
  

• 	rfree(elem);
  

• }
  

  }

#endif

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