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-rw-r--r--dma/nwl_loopback.c255
1 files changed, 0 insertions, 255 deletions
diff --git a/dma/nwl_loopback.c b/dma/nwl_loopback.c
deleted file mode 100644
index 381a462..0000000
--- a/dma/nwl_loopback.c
+++ /dev/null
@@ -1,255 +0,0 @@
-#define _BSD_SOURCE
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/time.h>
-
-#include "pci.h"
-#include "pcilib.h"
-#include "error.h"
-#include "tools.h"
-#include "nwl_private.h"
-
-#include "nwl_defines.h"
-
-#define NWL_BUG_EXTRA_DATA
-
-
-int dma_nwl_start_loopback(nwl_dma_t *ctx, pcilib_dma_direction_t direction, size_t packet_size) {
- uint32_t val;
-
- ctx->loopback_started = 1;
- dma_nwl_stop_loopback(ctx);
-
- val = packet_size;
- nwl_write_register(val, ctx, ctx->base_addr, PKT_SIZE_ADDRESS);
-
- if (ctx->type == PCILIB_DMA_MODIFICATION_DEFAULT) {
- switch (direction) {
- case PCILIB_DMA_BIDIRECTIONAL:
- val = LOOPBACK;
- nwl_write_register(val, ctx, ctx->base_addr, TX_CONFIG_ADDRESS);
- break;
- case PCILIB_DMA_TO_DEVICE:
- return -1;
- case PCILIB_DMA_FROM_DEVICE:
- val = PKTGENR;
- nwl_write_register(val, ctx, ctx->base_addr, RX_CONFIG_ADDRESS);
- break;
- }
- }
-
- ctx->loopback_started = 1;
-
- return 0;
-}
-
-int dma_nwl_stop_loopback(nwl_dma_t *ctx) {
- uint32_t val = 0;
-
- if (!ctx->loopback_started) return 0;
-
- /* Stop in any case, otherwise we can have problems in benchmark due to
- engine initialized in previous run, and benchmark is only actual usage.
- Otherwise, we should detect current loopback status during initialization */
-
- if (ctx->type == PCILIB_DMA_MODIFICATION_DEFAULT) {
- nwl_write_register(val, ctx, ctx->base_addr, TX_CONFIG_ADDRESS);
- nwl_write_register(val, ctx, ctx->base_addr, RX_CONFIG_ADDRESS);
- }
-
- ctx->loopback_started = 0;
-
- 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 iter, i;
- int err;
- size_t bytes, rbytes;
- uint32_t *buf, *cmp;
- const char *error = NULL;
- size_t packet_size, blocks;
-
- 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);
-
- if (size%sizeof(uint32_t)) size = 1 + size / sizeof(uint32_t);
- else size /= sizeof(uint32_t);
-
- // Not supported
- if (ctx->type == PCILIB_DMA_MODIFICATION_DEFAULT) {
- 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 -1;
- }
-
-#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 (size * sizeof(uint32_t) > NWL_MAX_PACKET_SIZE) {
- packet_size = NWL_MAX_PACKET_SIZE;
- blocks = (size * sizeof(uint32_t)) / packet_size + (((size*sizeof(uint32_t))%packet_size)?1:0);
- } else {
- packet_size = size * sizeof(uint32_t);
- blocks = 1;
- }
-
- dma_nwl_start_loopback(ctx, direction, packet_size);
-
- // Allocate memory and prepare data
- buf = malloc(blocks * packet_size * sizeof(uint32_t));
- cmp = malloc(blocks * packet_size * sizeof(uint32_t));
- if ((!buf)||(!cmp)) {
- if (buf) free(buf);
- if (cmp) free(cmp);
- return -1;
- }
-
- 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);
-
- // This way causes more problems with garbage
- //pcilib_write_register(ctx->pcilib, NULL, "control", 0x3e1);
- }
-
- // Benchmark
- for (iter = 0; iter < iterations; iter++) {
- memset(cmp, 0x13 + iter, size * sizeof(uint32_t));
-
- if (ctx->type == PCILIB_NWL_MODIFICATION_IPECAMERA) {
- pcilib_write_register(ctx->pcilib, NULL, "control", 0x1e1);
- }
-
- if ((direction&PCILIB_DMA_TO_DEVICE)||(ctx->type != PCILIB_DMA_MODIFICATION_DEFAULT)) {
- memcpy(buf, cmp, size * sizeof(uint32_t));
-
- if (direction&PCILIB_DMA_TO_DEVICE) {
- gettimeofday(&start, NULL);
- }
-
- 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;
- }
-
- if (direction&PCILIB_DMA_TO_DEVICE) {
- // wait written
- if (direction == PCILIB_DMA_TO_DEVICE) {
- dma_nwl_wait_completion(ctx, writeid, PCILIB_DMA_TIMEOUT);
- }
- gettimeofday(&cur, NULL);
- us += ((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec));
- }
- }
-
- if (ctx->type == PCILIB_NWL_MODIFICATION_IPECAMERA) {
- pcilib_write_register(ctx->pcilib, NULL, "control", 0x3e1);
- }
-
- memset(buf, 0, size * sizeof(uint32_t));
-
- if (direction&PCILIB_DMA_FROM_DEVICE) {
- gettimeofday(&start, NULL);
- }
-
- for (i = 0, bytes = 0; i < blocks; i++) {
-#ifdef NWL_BUG_EXTRA_DATA
- retry:
-#endif
-
- err = pcilib_read_dma(ctx->pcilib, readid, addr, packet_size * sizeof(uint32_t), buf + (bytes>>2), &rbytes);
- if ((err)||(rbytes%sizeof(uint32_t))) {
- break;
- }
-#ifdef NWL_BUG_EXTRA_DATA
- else if (rbytes == 8) {
- goto retry;
- }
-#endif
- bytes += rbytes;
- }
-
- if (direction&PCILIB_DMA_FROM_DEVICE) {
- gettimeofday(&cur, NULL);
- us += ((cur.tv_sec - start.tv_sec)*1000000 + (cur.tv_usec - start.tv_usec));
- }
-#ifdef NWL_BUG_EXTRA_DATA
- if ((err)||((bytes != size * sizeof(uint32_t))&&((bytes - 8) != size * sizeof(uint32_t)))) {
-#else
- if ((err)||(bytes != size * sizeof(uint32_t))) {
-#endif
- printf("Expected: %zu bytes, but %zu read, error: %i\n", size * sizeof(uint32_t), bytes, err);
- error = "Read failed";
- break;
- }
-
-#ifndef NWL_BUG_EXTRA_DATA
- if (direction == PCILIB_DMA_BIDIRECTIONAL) {
- if (memcmp(buf, cmp, size * sizeof(uint32_t))) {
- for (i = 0; i < size; i++)
- if (buf[i] != cmp[i]) break;
-
- bytes = i;
- printf("Expected: *0x%lx, Written at dword %lu:", 0x13 + iter, bytes);
- for (; (i < size)&&(i < (bytes + 16)); i++) {
- if (((i - bytes)%8)==0) printf("\n");
- printf("% 10lx", buf[i]);
- }
- printf("\n");
-
- error = "Written and read values does not match";
- break;
- }
- }
-#endif
- }
-
- if (ctx->type == PCILIB_NWL_MODIFICATION_IPECAMERA) {
- pcilib_write_register(ctx->pcilib, NULL, "control", 0x1e1);
- }
-
- if (error) {
- pcilib_warning("%s at iteration %i, error: %i, bytes: %zu", error, iter, 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 */
-
- 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 2024-11-08 14:17:43 +0000