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Viewing changes to dma/nwl_engine_buffers.h

  • Committer: Suren A. Chilingaryan
  • Date: 2011-10-23 01:17:19 UTC
  • Revision ID: csa@dside.dyndns.org-20111023011719-690ioo0e9jodpey3
Sync only required buffers

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Lines of Context:
dma/nwl_engine_buffers.h
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#define NWL_RING_SET(data, offset, val)  *(uint32_t*)(((char*)(data)) + (offset)) = (val)
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#define NWL_RING_UPDATE(data, offset, mask, val) *(uint32_t*)(((char*)(data)) + (offset)) = ((*(uint32_t*)(((char*)(data)) + (offset)))&(mask))|(val)
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int dma_nwl_sync_buffers(nwl_dma_t *ctx, pcilib_nwl_engine_description_t *info, pcilib_kmem_handle_t *kmem) {
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    switch (info->desc.direction) {
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     case PCILIB_DMA_FROM_DEVICE:
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        return pcilib_sync_kernel_memory(ctx->pcilib, kmem, PCILIB_KMEM_SYNC_FROMDEVICE);
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     case PCILIB_DMA_TO_DEVICE:
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        return pcilib_sync_kernel_memory(ctx->pcilib, kmem, PCILIB_KMEM_SYNC_TODEVICE);
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    }
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    return 0;
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}
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static int dma_nwl_compute_read_s2c_pointers(nwl_dma_t *ctx, pcilib_nwl_engine_description_t *info, unsigned char *ring, uint32_t ring_pa) {
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    size_t pos;
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    uint32_t val;
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    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);
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    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);
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//    if ((ring)&&(pages)) err = dma_nwl_sync_buffers(ctx, info, pages);
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//    else err = PCILIB_ERROR_FAILED;
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    if (err) {
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        if (pages) pcilib_free_kernel_memory(ctx->pcilib, pages, 0);
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        if (ring) pcilib_free_kernel_memory(ctx->pcilib, ring, 0);