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
run_test(struct pci_test * test)39 static int run_test(struct pci_test *test)
40 {
41 int ret = -EINVAL;
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 -ENODEV;
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 close(fd);
133 return (ret < 0) ? ret : 1 - ret; /* return 0 if test succeeded */
134 }
135
main(int argc,char ** argv)136 int main(int argc, char **argv)
137 {
138 int c;
139 struct pci_test *test;
140
141 test = calloc(1, sizeof(*test));
142 if (!test) {
143 perror("Fail to allocate memory for pci_test\n");
144 return -ENOMEM;
145 }
146
147 /* since '0' is a valid BAR number, initialize it to -1 */
148 test->barnum = -1;
149
150 /* set default size as 100KB */
151 test->size = 0x19000;
152
153 /* set default endpoint device */
154 test->device = "/dev/pci-endpoint-test.0";
155
156 while ((c = getopt(argc, argv, "D:b:m:x:i:Ilhrwcs:")) != EOF)
157 switch (c) {
158 case 'D':
159 test->device = optarg;
160 continue;
161 case 'b':
162 test->barnum = atoi(optarg);
163 if (test->barnum < 0 || test->barnum > 5)
164 goto usage;
165 continue;
166 case 'l':
167 test->legacyirq = true;
168 continue;
169 case 'm':
170 test->msinum = atoi(optarg);
171 if (test->msinum < 1 || test->msinum > 32)
172 goto usage;
173 continue;
174 case 'x':
175 test->msixnum = atoi(optarg);
176 if (test->msixnum < 1 || test->msixnum > 2048)
177 goto usage;
178 continue;
179 case 'i':
180 test->irqtype = atoi(optarg);
181 if (test->irqtype < 0 || test->irqtype > 2)
182 goto usage;
183 test->set_irqtype = true;
184 continue;
185 case 'I':
186 test->get_irqtype = true;
187 continue;
188 case 'r':
189 test->read = true;
190 continue;
191 case 'w':
192 test->write = true;
193 continue;
194 case 'c':
195 test->copy = true;
196 continue;
197 case 's':
198 test->size = strtoul(optarg, NULL, 0);
199 continue;
200 case 'h':
201 default:
202 usage:
203 fprintf(stderr,
204 "usage: %s [options]\n"
205 "Options:\n"
206 "\t-D <dev> PCI endpoint test device {default: /dev/pci-endpoint-test.0}\n"
207 "\t-b <bar num> BAR test (bar number between 0..5)\n"
208 "\t-m <msi num> MSI test (msi number between 1..32)\n"
209 "\t-x <msix num> \tMSI-X test (msix number between 1..2048)\n"
210 "\t-i <irq type> \tSet IRQ type (0 - Legacy, 1 - MSI, 2 - MSI-X)\n"
211 "\t-I Get current IRQ type configured\n"
212 "\t-l Legacy IRQ test\n"
213 "\t-r Read buffer test\n"
214 "\t-w Write buffer test\n"
215 "\t-c Copy buffer test\n"
216 "\t-s <size> Size of buffer {default: 100KB}\n"
217 "\t-h Print this help message\n",
218 argv[0]);
219 return -EINVAL;
220 }
221
222 return run_test(test);
223 }
224