diff options
| author | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2011-10-23 02:43:20 +0200 |
|---|---|---|
| committer | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2011-10-23 02:43:20 +0200 |
| commit | 8af9de82916ff76129d01ede66fc4406818c525c (patch) | |
| tree | 3327adb667efa9426b630ba841a16a598c0f9e0c /dma | |
| parent | 24f29cbd62e9b2f30aba8f2357084baf6b70fa17 (diff) | |
Properly perform synchronization of DMA buffers
Diffstat (limited to 'dma')
| -rw-r--r-- | dma/nwl_engine.c | 4 | ||||
| -rw-r--r-- | dma/nwl_engine_buffers.h | 8 |
2 files changed, 8 insertions, 4 deletions
diff --git a/dma/nwl_engine.c b/dma/nwl_engine.c index 277ad23..0b5924d 100644 --- a/dma/nwl_engine.c +++ b/dma/nwl_engine.c @@ -289,10 +289,12 @@ int dma_nwl_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uin } #endif /* NWL_FIX_EOP_FOR_BIG_PACKETS */ - //sync + pcilib_sync_kernel_memory(ctx->pcilib, info->pages, PCILIB_KMEM_SYNC_FROMDEVICE); void *buf = pcilib_kmem_get_block_ua(ctx->pcilib, info->pages, bufnum); ret = cb(cbattr, eop?PCILIB_DMA_FLAG_EOP:0, bufsize, buf); + pcilib_sync_kernel_memory(ctx->pcilib, info->pages, PCILIB_KMEM_SYNC_TODEVICE); dma_nwl_return_buffer(ctx, info); + res += bufsize; diff --git a/dma/nwl_engine_buffers.h b/dma/nwl_engine_buffers.h index dbf5aff..517e690 100644 --- a/dma/nwl_engine_buffers.h +++ b/dma/nwl_engine_buffers.h @@ -95,20 +95,22 @@ static int dma_nwl_allocate_engine_buffers(nwl_dma_t *ctx, pcilib_nwl_engine_des uint64_t buf_pa; pcilib_kmem_reuse_state_t reuse_ring, reuse_pages; pcilib_kmem_flags_t flags; + pcilib_kmem_type_t type; char *base = info->base_addr; if (info->pages) return 0; // Or bidirectional specified by 0x0|addr, or read 0x0|addr and write 0x80|addr + type = (info->desc.direction == PCILIB_DMA_TO_DEVICE)?PCILIB_KMEM_TYPE_DMA_S2C_PAGE:PCILIB_KMEM_TYPE_DMA_C2S_PAGE; 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); 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); + pcilib_kmem_handle_t *pages = pcilib_alloc_kernel_memory(ctx->pcilib, type, PCILIB_NWL_DMA_PAGES, 0, 0, PCILIB_KMEM_USE(PCILIB_KMEM_USE_DMA_PAGES, sub_use), flags); - if ((ring)&&(pages)) err = dma_nwl_sync_buffers(ctx, info, pages); - else err = PCILIB_ERROR_FAILED; +// if ((ring)&&(pages)) err = dma_nwl_sync_buffers(ctx, info, pages); +// else err = PCILIB_ERROR_FAILED; if (err) { if (pages) pcilib_free_kernel_memory(ctx->pcilib, pages, 0); |