// SPDX-License-Identifier: GPL-2.0-only
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/**
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* Userspace PCI Endpoint Test Module
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*
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* Copyright (C) 2017 Texas Instruments
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* Author: Kishon Vijay Abraham I <kishon@ti.com>
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <linux/pcitest.h>
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#define BILLION 1E9
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static char *result[] = { "NOT OKAY", "OKAY" };
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static char *irq[] = { "LEGACY", "MSI", "MSI-X" };
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struct pci_test {
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char *device;
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char barnum;
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bool legacyirq;
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unsigned int msinum;
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unsigned int msixnum;
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int irqtype;
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bool set_irqtype;
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bool get_irqtype;
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bool clear_irq;
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bool read;
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bool write;
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bool copy;
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unsigned long size;
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bool use_dma;
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};
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static int run_test(struct pci_test *test)
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{
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struct pci_endpoint_test_xfer_param param;
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int ret = -EINVAL;
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int fd;
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fd = open(test->device, O_RDWR);
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if (fd < 0) {
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perror("can't open PCI Endpoint Test device");
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return -ENODEV;
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}
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if (test->barnum >= 0 && test->barnum <= 5) {
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ret = ioctl(fd, PCITEST_BAR, test->barnum);
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fprintf(stdout, "BAR%d:\t\t", test->barnum);
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if (ret < 0)
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fprintf(stdout, "TEST FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->set_irqtype) {
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ret = ioctl(fd, PCITEST_SET_IRQTYPE, test->irqtype);
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fprintf(stdout, "SET IRQ TYPE TO %s:\t\t", irq[test->irqtype]);
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if (ret < 0)
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fprintf(stdout, "FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->get_irqtype) {
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ret = ioctl(fd, PCITEST_GET_IRQTYPE);
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fprintf(stdout, "GET IRQ TYPE:\t\t");
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if (ret < 0)
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fprintf(stdout, "FAILED\n");
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else
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fprintf(stdout, "%s\n", irq[ret]);
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}
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if (test->clear_irq) {
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ret = ioctl(fd, PCITEST_CLEAR_IRQ);
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fprintf(stdout, "CLEAR IRQ:\t\t");
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if (ret < 0)
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fprintf(stdout, "FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->legacyirq) {
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ret = ioctl(fd, PCITEST_LEGACY_IRQ, 0);
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fprintf(stdout, "LEGACY IRQ:\t");
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if (ret < 0)
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fprintf(stdout, "TEST FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->msinum > 0 && test->msinum <= 32) {
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ret = ioctl(fd, PCITEST_MSI, test->msinum);
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fprintf(stdout, "MSI%d:\t\t", test->msinum);
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if (ret < 0)
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fprintf(stdout, "TEST FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->msixnum > 0 && test->msixnum <= 2048) {
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ret = ioctl(fd, PCITEST_MSIX, test->msixnum);
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fprintf(stdout, "MSI-X%d:\t\t", test->msixnum);
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if (ret < 0)
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fprintf(stdout, "TEST FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->write) {
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param.size = test->size;
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if (test->use_dma)
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param.flags = PCITEST_FLAGS_USE_DMA;
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ret = ioctl(fd, PCITEST_WRITE, ¶m);
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fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
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if (ret < 0)
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fprintf(stdout, "TEST FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->read) {
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param.size = test->size;
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if (test->use_dma)
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param.flags = PCITEST_FLAGS_USE_DMA;
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ret = ioctl(fd, PCITEST_READ, ¶m);
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fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
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if (ret < 0)
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fprintf(stdout, "TEST FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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if (test->copy) {
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param.size = test->size;
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if (test->use_dma)
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param.flags = PCITEST_FLAGS_USE_DMA;
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ret = ioctl(fd, PCITEST_COPY, ¶m);
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fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
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if (ret < 0)
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fprintf(stdout, "TEST FAILED\n");
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else
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fprintf(stdout, "%s\n", result[ret]);
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}
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fflush(stdout);
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close(fd);
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return (ret < 0) ? ret : 1 - ret; /* return 0 if test succeeded */
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}
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int main(int argc, char **argv)
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{
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int c;
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struct pci_test *test;
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test = calloc(1, sizeof(*test));
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if (!test) {
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perror("Fail to allocate memory for pci_test\n");
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return -ENOMEM;
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}
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/* since '0' is a valid BAR number, initialize it to -1 */
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test->barnum = -1;
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/* set default size as 100KB */
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test->size = 0x19000;
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/* set default endpoint device */
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test->device = "/dev/pci-endpoint-test.0";
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while ((c = getopt(argc, argv, "D:b:m:x:i:deIlhrwcs:")) != EOF)
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switch (c) {
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case 'D':
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test->device = optarg;
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continue;
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case 'b':
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test->barnum = atoi(optarg);
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if (test->barnum < 0 || test->barnum > 5)
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goto usage;
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continue;
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case 'l':
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test->legacyirq = true;
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continue;
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case 'm':
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test->msinum = atoi(optarg);
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if (test->msinum < 1 || test->msinum > 32)
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goto usage;
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continue;
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case 'x':
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test->msixnum = atoi(optarg);
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if (test->msixnum < 1 || test->msixnum > 2048)
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goto usage;
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continue;
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case 'i':
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test->irqtype = atoi(optarg);
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if (test->irqtype < 0 || test->irqtype > 2)
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goto usage;
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test->set_irqtype = true;
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continue;
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case 'I':
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test->get_irqtype = true;
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continue;
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case 'r':
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test->read = true;
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continue;
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case 'w':
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test->write = true;
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continue;
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case 'c':
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test->copy = true;
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continue;
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case 'e':
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test->clear_irq = true;
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continue;
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case 's':
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test->size = strtoul(optarg, NULL, 0);
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continue;
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case 'd':
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test->use_dma = true;
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continue;
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case 'h':
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default:
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usage:
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fprintf(stderr,
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"usage: %s [options]\n"
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"Options:\n"
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"\t-D <dev> PCI endpoint test device {default: /dev/pci-endpoint-test.0}\n"
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"\t-b <bar num> BAR test (bar number between 0..5)\n"
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"\t-m <msi num> MSI test (msi number between 1..32)\n"
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"\t-x <msix num> \tMSI-X test (msix number between 1..2048)\n"
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"\t-i <irq type> \tSet IRQ type (0 - Legacy, 1 - MSI, 2 - MSI-X)\n"
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"\t-e Clear IRQ\n"
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"\t-I Get current IRQ type configured\n"
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"\t-d Use DMA\n"
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"\t-l Legacy IRQ test\n"
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"\t-r Read buffer test\n"
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"\t-w Write buffer test\n"
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"\t-c Copy buffer test\n"
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"\t-s <size> Size of buffer {default: 100KB}\n"
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"\t-h Print this help message\n",
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argv[0]);
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return -EINVAL;
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}
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return run_test(test);
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}
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