diff options
Diffstat (limited to 'dma')
| -rw-r--r-- | dma/nwl.c | 26 |
1 files changed, 21 insertions, 5 deletions
@@ -21,7 +21,7 @@ #define NWL_XAUI_ENGINE 0 #define NWL_XRAWDATA_ENGINE 1 #define NWL_FIX_EOP_FOR_BIG_PACKETS // requires precise sizes in read requests -#define NWL_GENERATE_DMA_IRQ +//#define NWL_GENERATE_DMA_IRQ #define PCILIB_NWL_ALIGNMENT 64 // in bytes #define PCILIB_NWL_DMA_DESCRIPTOR_SIZE 64 // in bytes @@ -110,7 +110,7 @@ int dma_nwl_start_engine(nwl_dma_t *ctx, pcilib_dma_engine_t dma) { pcilib_error("Timeout during reset of DMA engine %i", info->desc.addr); return PCILIB_ERROR_TIMEOUT; } - + // Acknowledge asserted engine interrupts if (val & DMA_ENG_INT_ACTIVE_MASK) { val |= DMA_ENG_ALLINT_MASK; @@ -380,7 +380,7 @@ int dma_nwl_write_fragment(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, if (bufnum == PCILIB_DMA_BUFFER_INVALID) return PCILIB_ERROR_TIMEOUT; } - return size; + return 0; } 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, size_t timeout, pcilib_dma_callback_t cb, void *cbattr) { @@ -448,6 +448,7 @@ double dma_nwl_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dm // Stop Generators and drain old data dma_nwl_stop_loopback(ctx); + dma_nwl_stop_engine(ctx, readid); // DS: replace with something better __sync_synchronize(); @@ -456,9 +457,16 @@ double dma_nwl_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dm #ifdef NWL_GENERATE_DMA_IRQ dma_nwl_enable_engine_irq(ctx, readid); #endif /* NWL_GENERATE_DMA_IRQ */ - + dma_nwl_start_loopback(ctx, direction, size * sizeof(uint32_t)); +/* + nwl_read_register(val, ctx, read_base, REG_DMA_ENG_CTRL_STATUS); + printf("Read DMA control: %lx\n", val); + nwl_read_register(val, ctx, write_base, REG_DMA_ENG_CTRL_STATUS); + printf("Write DMA control: %lx\n", val); +*/ + // Allocate memory and prepare data buf = malloc(size * sizeof(uint32_t)); cmp = malloc(size * sizeof(uint32_t)); @@ -478,11 +486,17 @@ double dma_nwl_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dm err = pcilib_write_dma(ctx->pcilib, writeid, addr, size * sizeof(uint32_t), buf, &bytes); if ((err)||(bytes != size * sizeof(uint32_t))) { + printf("%i %lu write\n", err, bytes); error = "Write failed"; break; } } - +/* + nwl_read_register(val, ctx, read_base, REG_DMA_ENG_CTRL_STATUS); + printf("Read DMA control (after write): %lx\n", val); + nwl_read_register(val, ctx, write_base, REG_DMA_ENG_CTRL_STATUS); + printf("Write DMA control (after write): %lx\n", val); +*/ memset(buf, 0, size * sizeof(uint32_t)); err = pcilib_read_dma(ctx->pcilib, readid, addr, size * sizeof(uint32_t), buf, &bytes); @@ -490,6 +504,7 @@ double dma_nwl_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dm us += ((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec)); if ((err)||(bytes != size * sizeof(uint32_t))) { + printf("%i %lu read\n", err, bytes); error = "Read failed"; break; } @@ -497,6 +512,7 @@ double dma_nwl_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dm if (direction == PCILIB_DMA_BIDIRECTIONAL) { res = memcmp(buf, cmp, size * sizeof(uint32_t)); if (res) { + puts("verify"); error = "Written and read values does not match"; break; } |