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 <time.h> 27 #include <unistd.h> 28 29 #include <linux/pcitest.h> 30 31 #define BILLION 1E9 32 33 static char *result[] = { "NOT OKAY", "OKAY" }; 34 35 struct pci_test { 36 char *device; 37 char barnum; 38 bool legacyirq; 39 unsigned int msinum; 40 bool read; 41 bool write; 42 bool copy; 43 unsigned long size; 44 }; 45 46 static int run_test(struct pci_test *test) 47 { 48 long ret; 49 int fd; 50 struct timespec start, end; 51 double time; 52 53 fd = open(test->device, O_RDWR); 54 if (fd < 0) { 55 perror("can't open PCI Endpoint Test device"); 56 return fd; 57 } 58 59 if (test->barnum >= 0 && test->barnum <= 5) { 60 ret = ioctl(fd, PCITEST_BAR, test->barnum); 61 fprintf(stdout, "BAR%d:\t\t", test->barnum); 62 if (ret < 0) 63 fprintf(stdout, "TEST FAILED\n"); 64 else 65 fprintf(stdout, "%s\n", result[ret]); 66 } 67 68 if (test->legacyirq) { 69 ret = ioctl(fd, PCITEST_LEGACY_IRQ, 0); 70 fprintf(stdout, "LEGACY IRQ:\t"); 71 if (ret < 0) 72 fprintf(stdout, "TEST FAILED\n"); 73 else 74 fprintf(stdout, "%s\n", result[ret]); 75 } 76 77 if (test->msinum > 0 && test->msinum <= 32) { 78 ret = ioctl(fd, PCITEST_MSI, test->msinum); 79 fprintf(stdout, "MSI%d:\t\t", test->msinum); 80 if (ret < 0) 81 fprintf(stdout, "TEST FAILED\n"); 82 else 83 fprintf(stdout, "%s\n", result[ret]); 84 } 85 86 if (test->write) { 87 ret = ioctl(fd, PCITEST_WRITE, test->size); 88 fprintf(stdout, "WRITE (%7ld bytes):\t\t", test->size); 89 if (ret < 0) 90 fprintf(stdout, "TEST FAILED\n"); 91 else 92 fprintf(stdout, "%s\n", result[ret]); 93 } 94 95 if (test->read) { 96 ret = ioctl(fd, PCITEST_READ, test->size); 97 fprintf(stdout, "READ (%7ld bytes):\t\t", test->size); 98 if (ret < 0) 99 fprintf(stdout, "TEST FAILED\n"); 100 else 101 fprintf(stdout, "%s\n", result[ret]); 102 } 103 104 if (test->copy) { 105 ret = ioctl(fd, PCITEST_COPY, test->size); 106 fprintf(stdout, "COPY (%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 fflush(stdout); 114 } 115 116 int main(int argc, char **argv) 117 { 118 int c; 119 struct pci_test *test; 120 121 test = calloc(1, sizeof(*test)); 122 if (!test) { 123 perror("Fail to allocate memory for pci_test\n"); 124 return -ENOMEM; 125 } 126 127 /* since '0' is a valid BAR number, initialize it to -1 */ 128 test->barnum = -1; 129 130 /* set default size as 100KB */ 131 test->size = 0x19000; 132 133 /* set default endpoint device */ 134 test->device = "/dev/pci-endpoint-test.0"; 135 136 while ((c = getopt(argc, argv, "D:b:m:lrwcs:")) != EOF) 137 switch (c) { 138 case 'D': 139 test->device = optarg; 140 continue; 141 case 'b': 142 test->barnum = atoi(optarg); 143 if (test->barnum < 0 || test->barnum > 5) 144 goto usage; 145 continue; 146 case 'l': 147 test->legacyirq = true; 148 continue; 149 case 'm': 150 test->msinum = atoi(optarg); 151 if (test->msinum < 1 || test->msinum > 32) 152 goto usage; 153 continue; 154 case 'r': 155 test->read = true; 156 continue; 157 case 'w': 158 test->write = true; 159 continue; 160 case 'c': 161 test->copy = true; 162 continue; 163 case 's': 164 test->size = strtoul(optarg, NULL, 0); 165 continue; 166 case '?': 167 case 'h': 168 default: 169 usage: 170 fprintf(stderr, 171 "usage: %s [options]\n" 172 "Options:\n" 173 "\t-D <dev> PCI endpoint test device {default: /dev/pci-endpoint-test.0}\n" 174 "\t-b <bar num> BAR test (bar number between 0..5)\n" 175 "\t-m <msi num> MSI test (msi number between 1..32)\n" 176 "\t-r Read buffer test\n" 177 "\t-w Write buffer test\n" 178 "\t-c Copy buffer test\n" 179 "\t-s <size> Size of buffer {default: 100KB}\n", 180 argv[0]); 181 return -EINVAL; 182 } 183 184 run_test(test); 185 return 0; 186 } 187