4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * Copyright(c) 2014 6WIND S.A.
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38 #include <sys/queue.h>
40 #include <rte_interrupts.h>
42 #include <rte_ethdev.h>
43 #include <rte_devargs.h>
48 /* Generic maximum number of drivers to have room to allocate all drivers */
49 #define NUM_MAX_DRIVERS 256
55 * - Register a driver with a ``probe()`` function.
57 * - Dump all PCI devices.
59 * - Check that the ``probe()`` function is called at least once.
62 int test_pci_run = 0; /* value checked by the multiprocess test */
63 static unsigned pci_dev_count;
65 static int my_driver_init(struct rte_pci_driver *dr,
66 struct rte_pci_device *dev);
69 const struct rte_pci_id my_driver_id[] = {
70 {RTE_PCI_DEVICE(0x0001, 0x1234)},
71 { .vendor_id = 0, /* sentinel */ },
74 const struct rte_pci_id my_driver_id2[] = {
75 {RTE_PCI_DEVICE(0x0001, 0x4444)},
76 {RTE_PCI_DEVICE(0x0002, 0xabcd)},
77 { .vendor_id = 0, /* sentinel */ },
80 struct rte_pci_driver my_driver = {
84 .probe = my_driver_init,
85 .id_table = my_driver_id,
89 struct rte_pci_driver my_driver2 = {
91 .name = "test_driver2"
93 .probe = my_driver_init,
94 .id_table = my_driver_id2,
99 my_driver_init(__attribute__((unused)) struct rte_pci_driver *dr,
100 struct rte_pci_device *dev)
102 printf("My driver init called in %s\n", dr->driver.name);
103 printf("%x:%x:%x.%d", dev->addr.domain, dev->addr.bus,
104 dev->addr.devid, dev->addr.function);
105 printf(" - vendor:%x device:%x\n", dev->id.vendor_id, dev->id.device_id);
112 blacklist_all_devices(void)
114 struct rte_pci_device *dev = NULL;
116 char pci_addr_str[16];
118 TAILQ_FOREACH(dev, &pci_device_list, next) {
119 snprintf(pci_addr_str, sizeof(pci_addr_str), PCI_PRI_FMT,
120 dev->addr.domain, dev->addr.bus, dev->addr.devid,
122 if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
124 printf("Error: cannot blacklist <%s>", pci_addr_str);
129 printf("%u devices blacklisted\n", i);
132 /* clear devargs list that was modified by the test */
133 static void free_devargs_list(void)
135 struct rte_devargs *devargs;
137 while (!TAILQ_EMPTY(&devargs_list)) {
138 devargs = TAILQ_FIRST(&devargs_list);
139 TAILQ_REMOVE(&devargs_list, devargs, next);
145 /* backup real devices & drivers (not used for testing) */
146 struct pci_driver_list real_pci_driver_list =
147 TAILQ_HEAD_INITIALIZER(real_pci_driver_list);
148 struct pci_device_list real_pci_device_list =
149 TAILQ_HEAD_INITIALIZER(real_pci_device_list);
151 REGISTER_LINKED_RESOURCE(test_pci_sysfs);
156 struct rte_pci_device *dev;
157 struct rte_pci_driver *dr;
158 const struct resource *r;
161 r = resource_find("test_pci_sysfs");
162 TEST_ASSERT_NOT_NULL(r, "missing resource test_pci_sysfs");
164 ret = resource_untar(r);
165 TEST_ASSERT_SUCCESS(ret, "failed to untar %s", r->name);
167 ret = setenv("SYSFS_PCI_DEVICES", "test_pci_sysfs/bus/pci/devices", 1);
168 TEST_ASSERT_SUCCESS(ret, "failed to setenv");
170 /* Unregister original devices & drivers lists */
171 while (!TAILQ_EMPTY(&pci_driver_list)) {
172 dr = TAILQ_FIRST(&pci_driver_list);
173 rte_eal_pci_unregister(dr);
174 TAILQ_INSERT_TAIL(&real_pci_driver_list, dr, next);
177 while (!TAILQ_EMPTY(&pci_device_list)) {
178 dev = TAILQ_FIRST(&pci_device_list);
179 TAILQ_REMOVE(&pci_device_list, dev, next);
180 TAILQ_INSERT_TAIL(&real_pci_device_list, dev, next);
183 ret = rte_eal_pci_scan();
184 TEST_ASSERT_SUCCESS(ret, "failed to scan PCI bus");
185 rte_eal_pci_dump(stdout);
191 test_pci_cleanup(void)
193 struct rte_pci_device *dev;
194 struct rte_pci_driver *dr;
195 const struct resource *r;
198 unsetenv("SYSFS_PCI_DEVICES");
200 r = resource_find("test_pci_sysfs");
201 TEST_ASSERT_NOT_NULL(r, "missing resource test_pci_sysfs");
203 ret = resource_rm_by_tar(r);
204 TEST_ASSERT_SUCCESS(ret, "Failed to delete resource %s", r->name);
207 * FIXME: there is no API in DPDK to free a rte_pci_device so we
208 * cannot free the devices in the right way. Let's assume that we
209 * don't care for tests.
211 while (!TAILQ_EMPTY(&pci_device_list)) {
212 dev = TAILQ_FIRST(&pci_device_list);
213 TAILQ_REMOVE(&pci_device_list, dev, next);
216 /* Restore original devices & drivers lists */
217 while (!TAILQ_EMPTY(&real_pci_driver_list)) {
218 dr = TAILQ_FIRST(&real_pci_driver_list);
219 TAILQ_REMOVE(&real_pci_driver_list, dr, next);
220 rte_eal_pci_register(dr);
223 while (!TAILQ_EMPTY(&real_pci_device_list)) {
224 dev = TAILQ_FIRST(&real_pci_device_list);
225 TAILQ_REMOVE(&real_pci_device_list, dev, next);
226 TAILQ_INSERT_TAIL(&pci_device_list, dev, next);
233 test_pci_blacklist(void)
235 struct rte_devargs_list save_devargs_list;
237 printf("Dump all devices\n");
238 TEST_ASSERT(TAILQ_EMPTY(&pci_driver_list),
239 "pci_driver_list not empty");
241 rte_eal_pci_register(&my_driver);
242 rte_eal_pci_register(&my_driver2);
245 printf("Scan bus\n");
248 if (pci_dev_count == 0) {
249 printf("no device detected\n");
253 /* save the real devargs_list */
254 save_devargs_list = devargs_list;
255 TAILQ_INIT(&devargs_list);
257 blacklist_all_devices();
260 printf("Scan bus with all devices blacklisted\n");
264 devargs_list = save_devargs_list;
266 if (pci_dev_count != 0) {
267 printf("not all devices are blacklisted\n");
273 rte_eal_pci_unregister(&my_driver);
274 rte_eal_pci_unregister(&my_driver2);
279 static int test_pci_sysfs(void)
285 orig = pci_get_sysfs_path();
286 ret = setenv("SYSFS_PCI_DEVICES", "My Documents", 1);
287 TEST_ASSERT_SUCCESS(ret, "Failed setenv to My Documents");
289 newpath = pci_get_sysfs_path();
290 TEST_ASSERT(!strcmp(newpath, "My Documents"),
291 "pci_get_sysfs_path() should return 'My Documents' "
292 "but gives %s", newpath);
294 ret = setenv("SYSFS_PCI_DEVICES", orig, 1);
295 TEST_ASSERT_SUCCESS(ret, "Failed setenv back to '%s'", orig);
297 newpath = pci_get_sysfs_path();
298 TEST_ASSERT(!strcmp(orig, newpath),
299 "pci_get_sysfs_path returned unexpected path: "
300 "%s (expected: %s)", newpath, orig);
307 if (test_pci_sysfs())
310 if (test_pci_setup())
313 if (test_pci_blacklist())
316 if (test_pci_cleanup())
322 REGISTER_TEST_COMMAND(pci_autotest, test_pci);