tools: PCI: Add a userspace tool to test PCI endpoint
Add a userspace tool to invoke the ioctls exposed by the PCI endpoint test driver to perform various PCI tests. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Kishon Vijay Abraham I
Bjorn Helgaas
parent
0cfb512e4a
commit
3f2ed81348
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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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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 of
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* the License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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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 <time.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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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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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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};
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static int run_test(struct pci_test *test)
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{
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long ret;
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int fd;
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struct timespec start, end;
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double time;
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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 fd;
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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->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->write) {
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ret = ioctl(fd, PCITEST_WRITE, test->size);
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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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ret = ioctl(fd, PCITEST_READ, test->size);
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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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ret = ioctl(fd, PCITEST_COPY, test->size);
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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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}
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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:lrwcs:")) != 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 '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 's':
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test->size = strtoul(optarg, NULL, 0);
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continue;
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case '?':
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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-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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argv[0]);
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return -EINVAL;
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}
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run_test(test);
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return 0;
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}
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