diff options
Diffstat (limited to 'dma/nwl_engine_buffers.h')
| -rw-r--r-- | dma/nwl_engine_buffers.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/dma/nwl_engine_buffers.h b/dma/nwl_engine_buffers.h index 30385ea..6b794c6 100644 --- a/dma/nwl_engine_buffers.h +++ b/dma/nwl_engine_buffers.h @@ -128,6 +128,7 @@ static int dma_nwl_allocate_engine_buffers(nwl_dma_t *ctx, pcilib_nwl_engine_des else if (reuse_ring & PCILIB_KMEM_REUSE_HARDWARE == 0) pcilib_warning("Lost DMA buffers are found (missing HW reference), reinitializing..."); else { nwl_read_register(val, ctx, info->base_addr, REG_DMA_ENG_CTRL_STATUS); + if (val&DMA_ENG_RUNNING == 0) pcilib_warning("Lost DMA buffers are found (DMA engine is stopped), reinitializing..."); else preserve = 1; } @@ -146,9 +147,10 @@ static int dma_nwl_allocate_engine_buffers(nwl_dma_t *ctx, pcilib_nwl_engine_des if (err) preserve = 0; } - if (preserve) + if (preserve) { info->reused = 1; - else { + buf_sz = pcilib_kmem_get_block_size(ctx->pcilib, pages, 0); + } else { memset(data, 0, PCILIB_NWL_DMA_PAGES * PCILIB_NWL_DMA_DESCRIPTOR_SIZE); for (i = 0; i < PCILIB_NWL_DMA_PAGES; i++, data += PCILIB_NWL_DMA_DESCRIPTOR_SIZE) { @@ -178,7 +180,6 @@ static int dma_nwl_allocate_engine_buffers(nwl_dma_t *ctx, pcilib_nwl_engine_des info->page_size = buf_sz; info->ring_size = PCILIB_NWL_DMA_PAGES; - return 0; } @@ -254,7 +255,7 @@ static size_t dma_nwl_get_next_buffer(nwl_dma_t * ctx, pcilib_nwl_engine_descrip n += res; } } - + if (n < n_buffers) return PCILIB_DMA_BUFFER_INVALID; return info->head; @@ -278,7 +279,7 @@ static int dma_nwl_push_buffer(nwl_dma_t *ctx, pcilib_nwl_engine_description_t * flags |= DMA_BD_EOP_MASK; info->writting = 0; } - + NWL_RING_SET(ring, DMA_BD_BUFL_CTRL_OFFSET, size|flags); NWL_RING_SET(ring, DMA_BD_BUFL_STATUS_OFFSET, size); |