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-rw-r--r--dma/nwl.c185
1 files changed, 3 insertions, 182 deletions
diff --git a/dma/nwl.c b/dma/nwl.c
index efae205..6bb79c5 100644
--- a/dma/nwl.c
+++ b/dma/nwl.c
@@ -1,6 +1,5 @@
#define _PCILIB_DMA_NWL_C
#define _BSD_SOURCE
-//#define DEBUG_HARDWARE
#include <stdio.h>
#include <stdlib.h>
@@ -47,10 +46,9 @@ int dma_nwl_stop(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, pcilib_dma
}
if (ctx->engines[dma].preserve) preserving = 1;
- else {
- err = dma_nwl_stop_engine(ctx, dma);
- if (err) return err;
- }
+
+ err = dma_nwl_stop_engine(ctx, dma);
+ if (err) return err;
}
// global cleanup, should we do anything?
@@ -68,9 +66,6 @@ int dma_nwl_stop(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, pcilib_dma
ctx->engines[dma].preserve = 0;
}
- // Do not close DMA if preservation mode is set
- if (ctx->engines[dma].preserve) return 0;
-
return dma_nwl_stop_engine(ctx, dma);
}
@@ -138,177 +133,3 @@ void dma_nwl_free(pcilib_dma_context_t *vctx) {
free(ctx);
}
}
-
-
-double dma_nwl_benchmark(pcilib_dma_context_t *vctx, pcilib_dma_engine_addr_t dma, uintptr_t addr, size_t size, size_t iterations, pcilib_dma_direction_t direction) {
- int i;
- int res;
- int err;
- size_t bytes;
- uint32_t val;
- uint32_t *buf, *cmp;
- const char *error = NULL;
- pcilib_register_value_t regval;
-
- size_t us = 0;
- struct timeval start, cur;
-
- nwl_dma_t *ctx = (nwl_dma_t*)vctx;
-
- pcilib_dma_engine_t readid = pcilib_find_dma_by_addr(ctx->pcilib, PCILIB_DMA_FROM_DEVICE, dma);
- pcilib_dma_engine_t writeid = pcilib_find_dma_by_addr(ctx->pcilib, PCILIB_DMA_TO_DEVICE, dma);
-
- char *read_base = ctx->engines[readid].base_addr;
- char *write_base = ctx->engines[writeid].base_addr;
-
- if (size%sizeof(uint32_t)) size = 1 + size / sizeof(uint32_t);
- else size /= sizeof(uint32_t);
-
- // Not supported
- if (direction == PCILIB_DMA_TO_DEVICE) return -1.;
- else if ((direction == PCILIB_DMA_FROM_DEVICE)&&(ctx->type != PCILIB_DMA_MODIFICATION_DEFAULT)) return -1.;
-
- // Stop Generators and drain old data
- if (ctx->type == PCILIB_DMA_MODIFICATION_DEFAULT) dma_nwl_stop_loopback(ctx);
-// dma_nwl_stop_engine(ctx, readid); // DS: replace with something better
-
- __sync_synchronize();
-
- err = pcilib_skip_dma(ctx->pcilib, readid);
- if (err) {
- pcilib_error("Can't start benchmark, devices continuously writes unexpected data using DMA engine");
- return err;
- }
-
-#ifdef NWL_GENERATE_DMA_IRQ
- dma_nwl_enable_engine_irq(ctx, readid);
- dma_nwl_enable_engine_irq(ctx, writeid);
-#endif /* NWL_GENERATE_DMA_IRQ */
-
-
- if (ctx->type == PCILIB_DMA_MODIFICATION_DEFAULT) {
- dma_nwl_start_loopback(ctx, direction, size * sizeof(uint32_t));
- }
-
- // Allocate memory and prepare data
- buf = malloc(size * sizeof(uint32_t));
- cmp = malloc(size * sizeof(uint32_t));
- if ((!buf)||(!cmp)) {
- if (buf) free(buf);
- if (cmp) free(cmp);
- return -1;
- }
-
- memset(cmp, 0x13, size * sizeof(uint32_t));
-
-
-#ifdef DEBUG_HARDWARE
- if (ctx->type == PCILIB_NWL_MODIFICATION_IPECAMERA) {
- pcilib_write_register(ctx->pcilib, NULL, "control", 0x1e5);
- usleep(100000);
- pcilib_write_register(ctx->pcilib, NULL, "control", 0x1e1);
- }
-#endif /* DEBUG_HARDWARE */
-
- // Benchmark
- for (i = 0; i < iterations; i++) {
-#ifdef DEBUG_HARDWARE
- if (ctx->type == PCILIB_NWL_MODIFICATION_IPECAMERA) {
- pcilib_write_register(ctx->pcilib, NULL, "control", 0x1e1);
- }
-#endif /* DEBUG_HARDWARE */
-
- gettimeofday(&start, NULL);
- if (direction&PCILIB_DMA_TO_DEVICE) {
- memcpy(buf, cmp, size * sizeof(uint32_t));
-
- err = pcilib_write_dma(ctx->pcilib, writeid, addr, size * sizeof(uint32_t), buf, &bytes);
- if ((err)||(bytes != size * sizeof(uint32_t))) {
- error = "Write failed";
- break;
- }
- }
-
-#ifdef DEBUG_HARDWARE
- if (ctx->type == PCILIB_NWL_MODIFICATION_IPECAMERA) {
- //usleep(1000000);
- pcilib_write_register(ctx->pcilib, NULL, "control", 0x3e1);
- }
-
- memset(buf, 0, size * sizeof(uint32_t));
-#endif /* DEBUG_HARDWARE */
-
- err = pcilib_read_dma(ctx->pcilib, readid, addr, size * sizeof(uint32_t), buf, &bytes);
- gettimeofday(&cur, NULL);
- us += ((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec));
-
- if ((err)||(bytes != size * sizeof(uint32_t))) {
- error = "Read failed";
- break;
- }
-
- if (direction == PCILIB_DMA_BIDIRECTIONAL) {
- res = memcmp(buf, cmp, size * sizeof(uint32_t));
- if (res) {
- error = "Written and read values does not match";
- break;
- }
- }
-
-#ifdef DEBUG_HARDWARE
- puts("====================================");
-
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9050", &regval);
- printf("Status1: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9080", &regval);
- printf("Start address: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9090", &regval);
- printf("End address: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9100", &regval);
- printf("Status2: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9110", &regval);
- printf("Status3: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9160", &regval);
- printf("Add_rd_ddr: %i 0x%lx\n", err, regval);
-#endif /* DEBUG_HARDWARE */
-
- }
-
-#ifdef DEBUG_HARDWARE
- puts("------------------------------------------------");
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9050", &regval);
- printf("Status1: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9080", &regval);
- printf("Start address: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9090", &regval);
- printf("End address: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9100", &regval);
- printf("Status2: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9110", &regval);
- printf("Status3: %i 0x%lx\n", err, regval);
- err = pcilib_read_register(ctx->pcilib, NULL, "reg9160", &regval);
- printf("Add_rd_ddr: %i 0x%lx\n", err, regval);
-#endif /* DEBUG_HARDWARE */
-
- if (error) {
- pcilib_warning("%s at iteration %i, error: %i, bytes: %zu", error, i, err, bytes);
- }
-
-#ifdef NWL_GENERATE_DMA_IRQ
- dma_nwl_disable_engine_irq(ctx, writeid);
- dma_nwl_disable_engine_irq(ctx, readid);
-#endif /* NWL_GENERATE_DMA_IRQ */
-
- if (ctx->type == PCILIB_DMA_MODIFICATION_DEFAULT) dma_nwl_stop_loopback(ctx);
-
- __sync_synchronize();
-
- if (direction == PCILIB_DMA_FROM_DEVICE) {
- pcilib_skip_dma(ctx->pcilib, readid);
- }
-
- free(cmp);
- free(buf);
-
- return error?-1:(1. * size * sizeof(uint32_t) * iterations * 1000000) / (1024. * 1024. * us);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 08:26:07 +0000