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Diffstat (limited to 'dma')
-rw-r--r--dma/nwl.c26
1 files changed, 21 insertions, 5 deletions
diff --git a/dma/nwl.c b/dma/nwl.c
index 5c3c59e..e433997 100644
--- a/dma/nwl.c
+++ b/dma/nwl.c
@@ -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;
}