diff options
Diffstat (limited to 'dma')
| -rw-r--r-- | dma/nwl_buffers.h | 5 | ||||
| -rw-r--r-- | dma/nwl_engine.c | 16 |
2 files changed, 15 insertions, 6 deletions
diff --git a/dma/nwl_buffers.h b/dma/nwl_buffers.h index 9e60461..c298612 100644 --- a/dma/nwl_buffers.h +++ b/dma/nwl_buffers.h @@ -113,10 +113,11 @@ static int dma_nwl_allocate_engine_buffers(nwl_dma_t *ctx, pcilib_nwl_engine_des char *base = info->base_addr; if (info->pages) return 0; - + // Or bidirectional specified by 0x0|addr, or read 0x0|addr and write 0x80|addr sub_use = info->desc.addr|(info->desc.direction == PCILIB_DMA_TO_DEVICE)?0x80:0x00; - flags = PCILIB_KMEM_FLAG_REUSE|PCILIB_KMEM_FLAG_EXCLUSIVE|PCILIB_KMEM_FLAG_HARDWARE|info->preserve?PCILIB_KMEM_FLAG_PERSISTENT:0; + flags = PCILIB_KMEM_FLAG_REUSE|PCILIB_KMEM_FLAG_EXCLUSIVE|PCILIB_KMEM_FLAG_HARDWARE|(info->preserve?PCILIB_KMEM_FLAG_PERSISTENT:0); + pcilib_kmem_handle_t *ring = pcilib_alloc_kernel_memory(ctx->pcilib, PCILIB_KMEM_TYPE_CONSISTENT, 1, PCILIB_NWL_DMA_PAGES * PCILIB_NWL_DMA_DESCRIPTOR_SIZE, PCILIB_NWL_ALIGNMENT, PCILIB_KMEM_USE(PCILIB_KMEM_USE_DMA_RING, sub_use), flags); pcilib_kmem_handle_t *pages = pcilib_alloc_kernel_memory(ctx->pcilib, PCILIB_KMEM_TYPE_PAGE, PCILIB_NWL_DMA_PAGES, 0, 0, PCILIB_KMEM_USE(PCILIB_KMEM_USE_DMA_PAGES, sub_use), flags); diff --git a/dma/nwl_engine.c b/dma/nwl_engine.c index 58d5522..68e1805 100644 --- a/dma/nwl_engine.c +++ b/dma/nwl_engine.c @@ -161,6 +161,8 @@ int dma_nwl_stop_engine(nwl_dma_t *ctx, pcilib_dma_engine_t dma) { uint32_t val; uint32_t ring_pa; struct timeval start, cur; + pcilib_kmem_flags_t flags; + pcilib_nwl_engine_description_t *info = ctx->engines + dma; char *base = ctx->engines[dma].base_addr; @@ -194,19 +196,25 @@ int dma_nwl_stop_engine(nwl_dma_t *ctx, pcilib_dma_engine_t dma) { nwl_write_register(val, ctx, base, REG_DMA_ENG_CTRL_STATUS); } + if (info->preserve) { + flags = PCILIB_KMEM_FLAG_REUSE; + } else { + flags = PCILIB_KMEM_FLAG_HARDWARE|PCILIB_KMEM_FLAG_PERSISTENT; + } + + + printf("%lx %i\n", flags, info->preserve); // Clean buffers if (info->ring) { - pcilib_free_kernel_memory(ctx->pcilib, info->ring, info->preserve?PCILIB_KMEM_FLAG_REUSE:0); + pcilib_free_kernel_memory(ctx->pcilib, info->ring, flags); info->ring = NULL; } if (info->pages) { - pcilib_free_kernel_memory(ctx->pcilib, info->pages, info->preserve?PCILIB_KMEM_FLAG_REUSE:0); + pcilib_free_kernel_memory(ctx->pcilib, info->pages, flags); info->pages = NULL; } - nwl_read_register(val, ctx, info->base_addr, REG_DMA_ENG_CTRL_STATUS); - return 0; } |