tools/pci/pcitest.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /**
   3  * Userspace PCI Endpoint Test Module
   4  *
   5  * Copyright (C) 2017 Texas Instruments
   6  * Author: Kishon Vijay Abraham I <kishon@ti.com>
   7  */
   8
   9 #include <errno.h>
  10 #include <fcntl.h>
  11 #include <stdbool.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <sys/ioctl.h>
  15 #include <unistd.h>
  16
  17 #include <linux/pcitest.h>
  18
  19 #define BILLION 1E9
  20
  21 static char *result[] = { "NOT OKAY", "OKAY" };
  22 static char *irq[] = { "LEGACY", "MSI", "MSI-X" };
  23
  24 struct pci_test {
  25         char            *device;
  26         char            barnum;
  27         bool            legacyirq;
  28         unsigned int    msinum;
  29         unsigned int    msixnum;
  30         int             irqtype;
  31         bool            set_irqtype;
  32         bool            get_irqtype;
  33         bool            read;
  34         bool            write;
  35         bool            copy;
  36         unsigned long   size;
  37 };
  38
  39 static void run_test(struct pci_test *test)
  40 {
  41         long ret;
  42         int fd;
  43
  44         fd = open(test->device, O_RDWR);
  45         if (fd < 0) {
  46                 perror("can't open PCI Endpoint Test device");
  47                 return;
  48         }
  49
  50         if (test->barnum >= 0 && test->barnum <= 5) {
  51                 ret = ioctl(fd, PCITEST_BAR, test->barnum);
  52                 fprintf(stdout, "BAR%d:\t\t", test->barnum);
  53                 if (ret < 0)
  54                         fprintf(stdout, "TEST FAILED\n");
  55                 else
  56                         fprintf(stdout, "%s\n", result[ret]);
  57         }
  58
  59         if (test->set_irqtype) {
  60                 ret = ioctl(fd, PCITEST_SET_IRQTYPE, test->irqtype);
  61                 fprintf(stdout, "SET IRQ TYPE TO %s:\t\t", irq[test->irqtype]);
  62                 if (ret < 0)
  63                         fprintf(stdout, "FAILED\n");
  64                 else
  65                         fprintf(stdout, "%s\n", result[ret]);
  66         }
  67
  68         if (test->get_irqtype) {
  69                 ret = ioctl(fd, PCITEST_GET_IRQTYPE);
  70                 fprintf(stdout, "GET IRQ TYPE:\t\t");
  71                 if (ret < 0)
  72                         fprintf(stdout, "FAILED\n");
  73                 else
  74                         fprintf(stdout, "%s\n", irq[ret]);
  75         }
  76
  77         if (test->legacyirq) {
  78                 ret = ioctl(fd, PCITEST_LEGACY_IRQ, 0);
  79                 fprintf(stdout, "LEGACY IRQ:\t");
  80                 if (ret < 0)
  81                         fprintf(stdout, "TEST FAILED\n");
  82                 else
  83                         fprintf(stdout, "%s\n", result[ret]);
  84         }
  85
  86         if (test->msinum > 0 && test->msinum <= 32) {
  87                 ret = ioctl(fd, PCITEST_MSI, test->msinum);
  88                 fprintf(stdout, "MSI%d:\t\t", test->msinum);
  89                 if (ret < 0)
  90                         fprintf(stdout, "TEST FAILED\n");
  91                 else
  92                         fprintf(stdout, "%s\n", result[ret]);
  93         }
  94
  95         if (test->msixnum > 0 && test->msixnum <= 2048) {
  96                 ret = ioctl(fd, PCITEST_MSIX, test->msixnum);
  97                 fprintf(stdout, "MSI-X%d:\t\t", test->msixnum);
  98                 if (ret < 0)
  99                         fprintf(stdout, "TEST FAILED\n");
 100                 else
 101                         fprintf(stdout, "%s\n", result[ret]);
 102         }
 103
 104         if (test->write) {
 105                 ret = ioctl(fd, PCITEST_WRITE, test->size);
 106                 fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
 107                 if (ret < 0)
 108                         fprintf(stdout, "TEST FAILED\n");
 109                 else
 110                         fprintf(stdout, "%s\n", result[ret]);
 111         }
 112
 113         if (test->read) {
 114                 ret = ioctl(fd, PCITEST_READ, test->size);
 115                 fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
 116                 if (ret < 0)
 117                         fprintf(stdout, "TEST FAILED\n");
 118                 else
 119                         fprintf(stdout, "%s\n", result[ret]);
 120         }
 121
 122         if (test->copy) {
 123                 ret = ioctl(fd, PCITEST_COPY, test->size);
 124                 fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
 125                 if (ret < 0)
 126                         fprintf(stdout, "TEST FAILED\n");
 127                 else
 128                         fprintf(stdout, "%s\n", result[ret]);
 129         }
 130
 131         fflush(stdout);
 132         return (ret < 0) ? ret : 1 - ret; /* return 0 if test succeeded */
 133 }
 134
 135 int main(int argc, char **argv)
 136 {
 137         int c;
 138         struct pci_test *test;
 139
 140         test = calloc(1, sizeof(*test));
 141         if (!test) {
 142                 perror("Fail to allocate memory for pci_test\n");
 143                 return -ENOMEM;
 144         }
 145
 146         /* since '0' is a valid BAR number, initialize it to -1 */
 147         test->barnum = -1;
 148
 149         /* set default size as 100KB */
 150         test->size = 0x19000;
 151
 152         /* set default endpoint device */
 153         test->device = "/dev/pci-endpoint-test.0";
 154
 155         while ((c = getopt(argc, argv, "D:b:m:x:i:Ilhrwcs:")) != EOF)
 156         switch (c) {
 157         case 'D':
 158                 test->device = optarg;
 159                 continue;
 160         case 'b':
 161                 test->barnum = atoi(optarg);
 162                 if (test->barnum < 0 || test->barnum > 5)
 163                         goto usage;
 164                 continue;
 165         case 'l':
 166                 test->legacyirq = true;
 167                 continue;
 168         case 'm':
 169                 test->msinum = atoi(optarg);
 170                 if (test->msinum < 1 || test->msinum > 32)
 171                         goto usage;
 172                 continue;
 173         case 'x':
 174                 test->msixnum = atoi(optarg);
 175                 if (test->msixnum < 1 || test->msixnum > 2048)
 176                         goto usage;
 177                 continue;
 178         case 'i':
 179                 test->irqtype = atoi(optarg);
 180                 if (test->irqtype < 0 || test->irqtype > 2)
 181                         goto usage;
 182                 test->set_irqtype = true;
 183                 continue;
 184         case 'I':
 185                 test->get_irqtype = true;
 186                 continue;
 187         case 'r':
 188                 test->read = true;
 189                 continue;
 190         case 'w':
 191                 test->write = true;
 192                 continue;
 193         case 'c':
 194                 test->copy = true;
 195                 continue;
 196         case 's':
 197                 test->size = strtoul(optarg, NULL, 0);
 198                 continue;
 199         case 'h':
 200         default:
 201 usage:
 202                 fprintf(stderr,
 203                         "usage: %s [options]\n"
 204                         "Options:\n"
 205                         "\t-D <dev>             PCI endpoint test device {default: /dev/pci-endpoint-test.0}\n"
 206                         "\t-b <bar num>         BAR test (bar number between 0..5)\n"
 207                         "\t-m <msi num>         MSI test (msi number between 1..32)\n"
 208                         "\t-x <msix num>        \tMSI-X test (msix number between 1..2048)\n"
 209                         "\t-i <irq type>        \tSet IRQ type (0 - Legacy, 1 - MSI, 2 - MSI-X)\n"
 210                         "\t-I                   Get current IRQ type configured\n"
 211                         "\t-l                   Legacy IRQ test\n"
 212                         "\t-r                   Read buffer test\n"
 213                         "\t-w                   Write buffer test\n"
 214                         "\t-c                   Copy buffer test\n"
 215                         "\t-s <size>            Size of buffer {default: 100KB}\n",
 216                         "\t-h                   Print this help message\n",
 217                         argv[0]);
 218                 return -EINVAL;
 219         }
 220
 221         return run_test(test);
 222 }