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-rw-r--r--dma/nwl_loopback.c173
1 files changed, 173 insertions, 0 deletions
diff --git a/dma/nwl_loopback.c b/dma/nwl_loopback.c
index a31bd08..3c2c124 100644
--- a/dma/nwl_loopback.c
+++ b/dma/nwl_loopback.c
@@ -52,3 +52,176 @@ int dma_nwl_stop_loopback(nwl_dma_t *ctx) {
return 0;
}
+
+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 2024-10-18 18:22:10 +0000