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| author | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2011-12-08 03:47:23 +0100 |
|---|---|---|
| committer | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2011-12-08 03:47:23 +0100 |
| commit | 869ed99dbc3a645fee6de36e97e1e12127068f10 (patch) | |
| tree | fa4a4e7ef977a3d3621ff5e96fb664e6fbc9e6fe /dma | |
| parent | ddc77c1e819eee03a13efff4a9aa3161485f3f1f (diff) | |
| download | pcitool-869ed99dbc3a645fee6de36e97e1e12127068f10.tar.gz pcitool-869ed99dbc3a645fee6de36e97e1e12127068f10.tar.bz2 pcitool-869ed99dbc3a645fee6de36e97e1e12127068f10.tar.xz pcitool-869ed99dbc3a645fee6de36e97e1e12127068f10.zip | |
new event architecture, first trial
Diffstat (limited to 'dma')
| -rw-r--r-- | dma/nwl_engine.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/dma/nwl_engine.c b/dma/nwl_engine.c index 806173d..ac87f08 100644 --- a/dma/nwl_engine.c +++ b/dma/nwl_engine.c @@ -266,10 +266,12 @@ int dma_nwl_write_fragment(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, } int dma_nwl_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uintptr_t addr, size_t size, pcilib_dma_flags_t flags, pcilib_timeout_t timeout, pcilib_dma_callback_t cb, void *cbattr) { - int err, ret = 1; + int err, ret = PCILIB_STREAMING_REQ_PACKET; size_t res = 0; size_t bufnum; size_t bufsize; + pcilib_timeout_t wait; + nwl_dma_t *ctx = (nwl_dma_t*)vctx; size_t buf_size; @@ -281,15 +283,15 @@ int dma_nwl_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uin if (err) return err; do { - if (ret > 2) { - bufnum = dma_nwl_wait_buffer(ctx, info, &bufsize, &eop, 0); - if (bufnum == PCILIB_DMA_BUFFER_INVALID) return 0; - } else { - bufnum = dma_nwl_wait_buffer(ctx, info, &bufsize, &eop, timeout); - if (bufnum == PCILIB_DMA_BUFFER_INVALID) { - if (ret == 1) return PCILIB_ERROR_TIMEOUT; - return 0; - } + switch (ret&PCILIB_STREAMING_TIMEOUT_MASK) { + case PCILIB_STREAMING_CONTINUE: wait = PCILIB_DMA_TIMEOUT; break; + case PCILIB_STREAMING_WAIT: wait = timeout; break; + case PCILIB_STREAMING_CHECK: wait = 0; break; + } + + bufnum = dma_nwl_wait_buffer(ctx, info, &bufsize, &eop, wait); + if (bufnum == PCILIB_DMA_BUFFER_INVALID) { + return (ret&PCILIB_STREAMING_FAIL)?PCILIB_ERROR_TIMEOUT:0; } // EOP is not respected in IPE Camera @@ -300,8 +302,8 @@ int dma_nwl_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uin ret = cb(cbattr, (eop?PCILIB_DMA_FLAG_EOP:0), bufsize, buf); // DS: Fixme, it looks like we can avoid calling this for the sake of performance // pcilib_kmem_sync_block(ctx->pcilib, info->pages, PCILIB_KMEM_SYNC_TODEVICE, bufnum); - if (ret < 0) return -ret; dma_nwl_return_buffer(ctx, info); + if (ret < 0) return -ret; res += bufsize; |