tools/pci/pcitest.c

   1 /**
   2  * Userspace PCI Endpoint Test Module
   3  *
   4  * Copyright (C) 2017 Texas Instruments
   5  * Author: Kishon Vijay Abraham I <kishon@ti.com>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 of
   9  * the License as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <stdbool.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <sys/ioctl.h>
  26 #include <unistd.h>
  27
  28 #include <linux/pcitest.h>
  29
  30 #define BILLION 1E9
  31
  32 static char *result[] = { "NOT OKAY", "OKAY" };
  33 static char *irq[] = { "LEGACY", "MSI", "MSI-X" };
  34
  35 struct pci_test {
  36         char            *device;
  37         char            barnum;
  38         bool            legacyirq;
  39         unsigned int    msinum;
  40         unsigned int    msixnum;
  41         int             irqtype;
  42         bool            set_irqtype;
  43         bool            get_irqtype;
  44         bool            read;
  45         bool            write;
  46         bool            copy;
  47         unsigned long   size;
  48 };
  49
  50 static int run_test(struct pci_test *test)
  51 {
  52         int ret = -EINVAL;
  53         int fd;
  54
  55         fd = open(test->device, O_RDWR);
  56         if (fd < 0) {
  57                 perror("can't open PCI Endpoint Test device");
  58                 return -ENODEV;
  59         }
  60
  61         if (test->barnum >= 0 && test->barnum <= 5) {
  62                 ret = ioctl(fd, PCITEST_BAR, test->barnum);
  63                 fprintf(stdout, "BAR%d:\t\t", test->barnum);
  64                 if (ret < 0)
  65                         fprintf(stdout, "TEST FAILED\n");
  66                 else
  67                         fprintf(stdout, "%s\n", result[ret]);
  68         }
  69
  70         if (test->set_irqtype) {
  71                 ret = ioctl(fd, PCITEST_SET_IRQTYPE, test->irqtype);
  72                 fprintf(stdout, "SET IRQ TYPE TO %s:\t\t", irq[test->irqtype]);
  73                 if (ret < 0)
  74                         fprintf(stdout, "FAILED\n");
  75                 else
  76                         fprintf(stdout, "%s\n", result[ret]);
  77         }
  78
  79         if (test->get_irqtype) {
  80                 ret = ioctl(fd, PCITEST_GET_IRQTYPE);
  81                 fprintf(stdout, "GET IRQ TYPE:\t\t");
  82                 if (ret < 0)
  83                         fprintf(stdout, "FAILED\n");
  84                 else
  85                         fprintf(stdout, "%s\n", irq[ret]);
  86         }
  87
  88         if (test->legacyirq) {
  89                 ret = ioctl(fd, PCITEST_LEGACY_IRQ, 0);
  90                 fprintf(stdout, "LEGACY IRQ:\t");
  91                 if (ret < 0)
  92                         fprintf(stdout, "TEST FAILED\n");
  93                 else
  94                         fprintf(stdout, "%s\n", result[ret]);
  95         }
  96
  97         if (test->msinum > 0 && test->msinum <= 32) {
  98                 ret = ioctl(fd, PCITEST_MSI, test->msinum);
  99                 fprintf(stdout, "MSI%d:\t\t", test->msinum);
 100                 if (ret < 0)
 101                         fprintf(stdout, "TEST FAILED\n");
 102                 else
 103                         fprintf(stdout, "%s\n", result[ret]);
 104         }
 105
 106         if (test->msixnum > 0 && test->msixnum <= 2048) {
 107                 ret = ioctl(fd, PCITEST_MSIX, test->msixnum);
 108                 fprintf(stdout, "MSI-X%d:\t\t", test->msixnum);
 109                 if (ret < 0)
 110                         fprintf(stdout, "TEST FAILED\n");
 111                 else
 112                         fprintf(stdout, "%s\n", result[ret]);
 113         }
 114
 115         if (test->write) {
 116                 ret = ioctl(fd, PCITEST_WRITE, test->size);
 117                 fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size);
 118                 if (ret < 0)
 119                         fprintf(stdout, "TEST FAILED\n");
 120                 else
 121                         fprintf(stdout, "%s\n", result[ret]);
 122         }
 123
 124         if (test->read) {
 125                 ret = ioctl(fd, PCITEST_READ, test->size);
 126                 fprintf(stdout, "READ (%7ld bytes):\t\t", test->size);
 127                 if (ret < 0)
 128                         fprintf(stdout, "TEST FAILED\n");
 129                 else
 130                         fprintf(stdout, "%s\n", result[ret]);
 131         }
 132
 133         if (test->copy) {
 134                 ret = ioctl(fd, PCITEST_COPY, test->size);
 135                 fprintf(stdout, "COPY (%7ld bytes):\t\t", test->size);
 136                 if (ret < 0)
 137                         fprintf(stdout, "TEST FAILED\n");
 138                 else
 139                         fprintf(stdout, "%s\n", result[ret]);
 140         }
 141
 142         fflush(stdout);
 143 }
 144
 145 int main(int argc, char **argv)
 146 {
 147         int c;
 148         struct pci_test *test;
 149
 150         test = calloc(1, sizeof(*test));
 151         if (!test) {
 152                 perror("Fail to allocate memory for pci_test\n");
 153                 return -ENOMEM;
 154         }
 155
 156         /* since '0' is a valid BAR number, initialize it to -1 */
 157         test->barnum = -1;
 158
 159         /* set default size as 100KB */
 160         test->size = 0x19000;
 161
 162         /* set default endpoint device */
 163         test->device = "/dev/pci-endpoint-test.0";
 164
 165         while ((c = getopt(argc, argv, "D:b:m:x:i:Ilrwcs:")) != EOF)
 166         switch (c) {
 167         case 'D':
 168                 test->device = optarg;
 169                 continue;
 170         case 'b':
 171                 test->barnum = atoi(optarg);
 172                 if (test->barnum < 0 || test->barnum > 5)
 173                         goto usage;
 174                 continue;
 175         case 'l':
 176                 test->legacyirq = true;
 177                 continue;
 178         case 'm':
 179                 test->msinum = atoi(optarg);
 180                 if (test->msinum < 1 || test->msinum > 32)
 181                         goto usage;
 182                 continue;
 183         case 'x':
 184                 test->msixnum = atoi(optarg);
 185                 if (test->msixnum < 1 || test->msixnum > 2048)
 186                         goto usage;
 187                 continue;
 188         case 'i':
 189                 test->irqtype = atoi(optarg);
 190                 if (test->irqtype < 0 || test->irqtype > 2)
 191                         goto usage;
 192                 test->set_irqtype = true;
 193                 continue;
 194         case 'I':
 195                 test->get_irqtype = true;
 196                 continue;
 197         case 'r':
 198                 test->read = true;
 199                 continue;
 200         case 'w':
 201                 test->write = true;
 202                 continue;
 203         case 'c':
 204                 test->copy = true;
 205                 continue;
 206         case 's':
 207                 test->size = strtoul(optarg, NULL, 0);
 208                 continue;
 209         case '?':
 210         case 'h':
 211         default:
 212 usage:
 213                 fprintf(stderr,
 214                         "usage: %s [options]\n"
 215                         "Options:\n"
 216                         "\t-D <dev>             PCI endpoint test device {default: /dev/pci-endpoint-test.0}\n"
 217                         "\t-b <bar num>         BAR test (bar number between 0..5)\n"
 218                         "\t-m <msi num>         MSI test (msi number between 1..32)\n"
 219                         "\t-x <msix num>        \tMSI-X test (msix number between 1..2048)\n"
 220                         "\t-i <irq type>        \tSet IRQ type (0 - Legacy, 1 - MSI, 2 - MSI-X)\n"
 221                         "\t-I                   Get current IRQ type configured\n"
 222                         "\t-l                   Legacy IRQ test\n"
 223                         "\t-r                   Read buffer test\n"
 224                         "\t-w                   Write buffer test\n"
 225                         "\t-c                   Copy buffer test\n"
 226                         "\t-s <size>            Size of buffer {default: 100KB}\n",
 227                         argv[0]);
 228                 return -EINVAL;
 229         }
 230
 231         run_test(test);
 232         return 0;
 233 }