176 lines
5.3 KiB
C
176 lines
5.3 KiB
C
/*
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* This file is part of the Xilinx DMA IP Core driver tools for Linux
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*
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* Copyright (c) 2016-present, Xilinx, Inc.
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* All rights reserved.
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*
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* This source code is licensed under BSD-style license (found in the
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* LICENSE file in the root directory of this source tree)
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*/
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#include <assert.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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/* @TODO During kernel upstreaming, the IOCTL must move into the public user API of the kernel */
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#include "../xdma/cdev_sgdma.h"
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struct xdma_performance_ioctl perf;
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static struct option const long_opts[] =
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{
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{"device", required_argument, NULL, 'd'},
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{"count", required_argument, NULL, 'c'},
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{"size", required_argument, NULL, 's'},
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{"incremental", no_argument, NULL, 'i'},
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{"non-incremental", no_argument, NULL, 'n'},
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{"verbose", no_argument, NULL, 'v'},
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{"help", no_argument, NULL, 'h'},
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{0, 0, 0, 0}
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};
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static void usage(const char* name)
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{
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int i = 0;
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printf("%s\n\n", name);
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printf("usage: %s [OPTIONS]\n\n", name);
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printf("Performance test for XDMA SGDMA engine.\n\n");
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printf(" -%c (--%s) device\n", long_opts[i].val, long_opts[i].name); i++;
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printf(" -%c (--%s) incremental\n", long_opts[i].val, long_opts[i].name); i++;
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printf(" -%c (--%s) non-incremental\n", long_opts[i].val, long_opts[i].name); i++;
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printf(" -%c (--%s) be more verbose during test\n", long_opts[i].val, long_opts[i].name); i++;
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printf(" -%c (--%s) print usage help and exit\n", long_opts[i].val, long_opts[i].name); i++;
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}
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static uint32_t getopt_integer(char *optarg)
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{
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int rc;
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uint32_t value;
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rc = sscanf(optarg, "0x%x", &value);
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if (rc <= 0)
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rc = sscanf(optarg, "%ul", &value);
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//printf("sscanf() = %d, value = 0x%08x\n", rc, (unsigned int)value);
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return value;
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}
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int test_dma(char *device_name, int size, int count);
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static int verbosity = 0;
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int main(int argc, char *argv[])
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{
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int cmd_opt;
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char *device = "/dev/xdma/card0/h2c0";
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uint32_t size = 32768;
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uint32_t count = 1;
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char *filename = NULL;
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while ((cmd_opt = getopt_long(argc, argv, "vhic:d:s:", long_opts, NULL)) != -1)
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{
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switch (cmd_opt)
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{
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case 0:
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/* long option */
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break;
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case 'v':
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verbosity++;
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break;
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/* device node name */
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case 'd':
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printf("'%s'\n", optarg);
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device = strdup(optarg);
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break;
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/* transfer size in bytes */
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case 's':
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size = getopt_integer(optarg);
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break;
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/* count */
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case 'c':
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count = getopt_integer(optarg);
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printf(" count = %d\n", count);
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break;
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/* print usage help and exit */
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case 'h':
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default:
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usage(argv[0]);
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exit(0);
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break;
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}
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}
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printf("device = %s, size = 0x%08x, count = %u\n", device, size, count);
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test_dma(device, size, count);
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}
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int test_dma(char *device_name, int size, int count)
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{
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int rc = 0;
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int fd = open(device_name, O_RDWR);
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if (fd < 0) {
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printf("FAILURE: Could not open %s. Make sure xdma device driver is loaded and you have access rights (maybe use sudo?).\n", device_name);
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exit(1);
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}
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unsigned char status = 1;
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perf.version = IOCTL_XDMA_PERF_V1;
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perf.transfer_size = size;
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rc = ioctl(fd, IOCTL_XDMA_PERF_START, &perf);
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if (rc == 0) {
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printf("IOCTL_XDMA_PERF_START succesful.\n");
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} else {
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printf("ioctl(..., IOCTL_XDMA_PERF_START) = %d\n", rc);
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}
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#if 1
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while (count--) {
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sleep(2);
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rc = ioctl(fd, IOCTL_XDMA_PERF_GET, &perf);
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if (rc == 0) {
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printf("IOCTL_XDMA_PERF_GET succesful.\n");
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} else {
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printf("ioctl(..., IOCTL_XDMA_PERF_GET) = %d\n", rc);
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}
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printf("perf.transfer_size = %d\n", perf.transfer_size);
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printf("perf.iterations = %d\n", perf.iterations);
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printf("(data transferred = %lld bytes)\n", (long long)perf.transfer_size * (long long)perf.iterations);
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printf("perf.clock_cycle_count = %lld\n", (long long)perf.clock_cycle_count);
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printf("perf.data_cycle_count = %lld\n", (long long)perf.data_cycle_count);
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if (perf.clock_cycle_count && perf.data_cycle_count) {
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printf("(data duty cycle = %lld%%)\n", (long long)perf.data_cycle_count * 100 / (long long)perf.clock_cycle_count);
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}
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}
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#endif
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rc = ioctl(fd, IOCTL_XDMA_PERF_STOP, &perf);
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if (rc == 0) {
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printf("IOCTL_XDMA_PERF_STOP succesful.\n");
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} else {
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printf("ioctl(..., IOCTL_XDMA_PERF_STOP) = %d\n", rc);
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}
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printf("perf.transfer_size = %d bytes\n", perf.transfer_size);
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printf("perf.iterations = %d\n", perf.iterations);
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printf("(data transferred = %lld bytes)\n", (long long)perf.transfer_size * (long long)perf.iterations);
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printf("perf.clock_cycle_count = %lld\n", (long long)perf.clock_cycle_count);
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printf("perf.data_cycle_count = %lld\n", (long long)perf.data_cycle_count);
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if (perf.clock_cycle_count && perf.data_cycle_count) {
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printf("(data duty cycle = %lld%%)\n", (long long)perf.data_cycle_count * 100 / (long long)perf.clock_cycle_count);
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printf (" data rate ***** bytes length = %d, rate = %f \n", perf.transfer_size, (double)(long long)perf.data_cycle_count/(long long)perf.clock_cycle_count);
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}
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printf("perf.pending_count = %lld\n", (long long)perf.pending_count);
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close(fd);
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}
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