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b390f610 DW |
1 | /* |
2 | * Intel(R) Matrix Storage Manager hardware and firmware support routines | |
3 | * | |
4 | * Copyright (C) 2008 Intel Corporation | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along with | |
16 | * this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | */ | |
19 | #include "mdadm.h" | |
20 | #include "platform-intel.h" | |
21 | #include "probe_roms.h" | |
22 | #include <stdio.h> | |
23 | #include <stdlib.h> | |
24 | #include <string.h> | |
25 | #include <unistd.h> | |
26 | #include <dirent.h> | |
27 | #include <fcntl.h> | |
28 | #include <sys/mman.h> | |
29 | #include <sys/types.h> | |
30 | #include <sys/stat.h> | |
fc13853f LM |
31 | #include <limits.h> |
32 | ||
d835518b BK |
33 | #define NVME_SUBSYS_PATH "/sys/devices/virtual/nvme-subsystem/" |
34 | ||
191e6ddb MK |
35 | static bool imsm_orom_has_raid0(const struct imsm_orom *orom) |
36 | { | |
37 | return imsm_rlc_has_bit(orom, IMSM_OROM_RLC_RAID0); | |
38 | } | |
39 | ||
40 | static bool imsm_orom_has_raid1(const struct imsm_orom *orom) | |
41 | { | |
42 | return imsm_rlc_has_bit(orom, IMSM_OROM_RLC_RAID1); | |
43 | } | |
44 | ||
45 | static bool imsm_orom_has_raid10(const struct imsm_orom *orom) | |
46 | { | |
47 | return imsm_rlc_has_bit(orom, IMSM_OROM_RLC_RAID10); | |
48 | } | |
49 | ||
50 | static bool imsm_orom_has_raid5(const struct imsm_orom *orom) | |
51 | { | |
52 | return imsm_rlc_has_bit(orom, IMSM_OROM_RLC_RAID5); | |
53 | } | |
54 | ||
55 | /* IMSM platforms do not define how many disks are allowed for each level, | |
56 | * but there are some global limitations we need to follow. | |
57 | */ | |
58 | static bool imsm_orom_support_raid_disks_count_raid0(const int raid_disks) | |
59 | { | |
60 | return true; | |
61 | } | |
62 | ||
63 | static bool imsm_orom_support_raid_disks_count_raid1(const int raid_disks) | |
64 | { | |
65 | if (raid_disks == 2) | |
66 | return true; | |
67 | return false; | |
68 | } | |
69 | ||
70 | static bool imsm_orom_support_raid_disks_count_raid5(const int raid_disks) | |
71 | { | |
72 | if (raid_disks > 2) | |
73 | return true; | |
74 | return false; | |
75 | } | |
76 | ||
77 | static bool imsm_orom_support_raid_disks_count_raid10(const int raid_disks) | |
78 | { | |
610fc2ee MK |
79 | /* raid_disks count must be higher than 4 and even */ |
80 | if (raid_disks >= 4 && (raid_disks & 1) == 0) | |
191e6ddb MK |
81 | return true; |
82 | return false; | |
83 | } | |
84 | ||
85 | struct imsm_level_ops imsm_level_ops[] = { | |
86 | {0, imsm_orom_has_raid0, imsm_orom_support_raid_disks_count_raid0, "raid0"}, | |
87 | {1, imsm_orom_has_raid1, imsm_orom_support_raid_disks_count_raid1, "raid1"}, | |
88 | {5, imsm_orom_has_raid5, imsm_orom_support_raid_disks_count_raid5, "raid5"}, | |
89 | {10, imsm_orom_has_raid10, imsm_orom_support_raid_disks_count_raid10, "raid10"}, | |
90 | {-1, NULL, NULL, NULL} | |
91 | }; | |
92 | ||
9c747fa0 LM |
93 | static int devpath_to_ll(const char *dev_path, const char *entry, |
94 | unsigned long long *val); | |
95 | ||
9bc4ae77 | 96 | static void free_sys_dev(struct sys_dev **list) |
b390f610 DW |
97 | { |
98 | while (*list) { | |
99 | struct sys_dev *next = (*list)->next; | |
100 | ||
101 | if ((*list)->path) | |
102 | free((*list)->path); | |
103 | free(*list); | |
104 | *list = next; | |
105 | } | |
106 | } | |
107 | ||
108 | struct sys_dev *find_driver_devices(const char *bus, const char *driver) | |
109 | { | |
110 | /* search sysfs for devices driven by 'driver' */ | |
30730cb8 AO |
111 | char path[PATH_MAX]; |
112 | char link[PATH_MAX]; | |
113 | char *c, *p; | |
b390f610 DW |
114 | DIR *driver_dir; |
115 | struct dirent *de; | |
116 | struct sys_dev *head = NULL; | |
117 | struct sys_dev *list = NULL; | |
60f0f54d | 118 | struct sys_dev *vmd = NULL; |
a8e5382a | 119 | enum sys_dev_type type; |
9c747fa0 | 120 | unsigned long long dev_id; |
6b781d33 | 121 | unsigned long long class; |
a8e5382a LM |
122 | |
123 | if (strcmp(driver, "isci") == 0) | |
124 | type = SYS_DEV_SAS; | |
75350d87 KF |
125 | else if (strcmp(driver, "ahci") == 0) { |
126 | vmd = find_driver_devices("pci", "vmd"); | |
a8e5382a | 127 | type = SYS_DEV_SATA; |
75350d87 | 128 | } else if (strcmp(driver, "nvme") == 0) { |
60f0f54d PB |
129 | /* if looking for nvme devs, first look for vmd */ |
130 | vmd = find_driver_devices("pci", "vmd"); | |
614902f6 | 131 | type = SYS_DEV_NVME; |
60f0f54d PB |
132 | } else if (strcmp(driver, "vmd") == 0) |
133 | type = SYS_DEV_VMD; | |
a8e5382a LM |
134 | else |
135 | type = SYS_DEV_UNKNOWN; | |
b390f610 DW |
136 | |
137 | sprintf(path, "/sys/bus/%s/drivers/%s", bus, driver); | |
138 | driver_dir = opendir(path); | |
60f0f54d PB |
139 | if (!driver_dir) { |
140 | if (vmd) | |
141 | free_sys_dev(&vmd); | |
b390f610 | 142 | return NULL; |
60f0f54d | 143 | } |
b390f610 | 144 | for (de = readdir(driver_dir); de; de = readdir(driver_dir)) { |
5a1920f2 | 145 | int n; |
60f0f54d | 146 | int skip = 0; |
5a1920f2 | 147 | |
b390f610 DW |
148 | /* is 'de' a device? check that the 'subsystem' link exists and |
149 | * that its target matches 'bus' | |
150 | */ | |
151 | sprintf(path, "/sys/bus/%s/drivers/%s/%s/subsystem", | |
152 | bus, driver, de->d_name); | |
5a1920f2 | 153 | n = readlink(path, link, sizeof(link)); |
f21e18ca | 154 | if (n < 0 || n >= (int)sizeof(link)) |
b390f610 | 155 | continue; |
5a1920f2 | 156 | link[n] = '\0'; |
b390f610 DW |
157 | c = strrchr(link, '/'); |
158 | if (!c) | |
159 | continue; | |
160 | if (strncmp(bus, c+1, strlen(bus)) != 0) | |
161 | continue; | |
162 | ||
a8e5382a LM |
163 | sprintf(path, "/sys/bus/%s/drivers/%s/%s", |
164 | bus, driver, de->d_name); | |
165 | ||
60f0f54d PB |
166 | /* if searching for nvme - skip vmd connected one */ |
167 | if (type == SYS_DEV_NVME) { | |
168 | struct sys_dev *dev; | |
169 | char *rp = realpath(path, NULL); | |
170 | for (dev = vmd; dev; dev = dev->next) { | |
171 | if ((strncmp(dev->path, rp, strlen(dev->path)) == 0)) | |
172 | skip = 1; | |
173 | } | |
174 | free(rp); | |
175 | } | |
176 | ||
75350d87 KF |
177 | /* change sata type if under a vmd controller */ |
178 | if (type == SYS_DEV_SATA) { | |
179 | struct sys_dev *dev; | |
180 | char *rp = realpath(path, NULL); | |
181 | for (dev = vmd; dev; dev = dev->next) { | |
182 | if ((strncmp(dev->path, rp, strlen(dev->path)) == 0)) | |
183 | type = SYS_DEV_SATA_VMD; | |
184 | } | |
185 | free(rp); | |
186 | } | |
187 | ||
60f0f54d PB |
188 | /* if it's not Intel device or mark as VMD connected - skip it. */ |
189 | if (devpath_to_vendor(path) != 0x8086 || skip == 1) | |
a8e5382a LM |
190 | continue; |
191 | ||
9c747fa0 LM |
192 | if (devpath_to_ll(path, "device", &dev_id) != 0) |
193 | continue; | |
194 | ||
6b781d33 AP |
195 | if (devpath_to_ll(path, "class", &class) != 0) |
196 | continue; | |
197 | ||
30730cb8 AO |
198 | /* |
199 | * Each VMD device (domain) adds separate PCI bus, it is better | |
200 | * to store path as a path to that bus (easier further | |
201 | * determination which NVMe dev is connected to this particular | |
202 | * VMD domain). | |
203 | */ | |
204 | if (type == SYS_DEV_VMD) { | |
205 | sprintf(path, "/sys/bus/%s/drivers/%s/%s/domain/device", | |
206 | bus, driver, de->d_name); | |
207 | } | |
208 | p = realpath(path, NULL); | |
209 | if (p == NULL) { | |
210 | pr_err("Unable to get real path for '%s'\n", path); | |
211 | continue; | |
212 | } | |
213 | ||
b390f610 DW |
214 | /* start / add list entry */ |
215 | if (!head) { | |
503975b9 | 216 | head = xmalloc(sizeof(*head)); |
b390f610 DW |
217 | list = head; |
218 | } else { | |
503975b9 | 219 | list->next = xmalloc(sizeof(*head)); |
b390f610 DW |
220 | list = list->next; |
221 | } | |
222 | ||
223 | if (!list) { | |
224 | free_sys_dev(&head); | |
225 | break; | |
226 | } | |
227 | ||
9c747fa0 | 228 | list->dev_id = (__u16) dev_id; |
6b781d33 | 229 | list->class = (__u32) class; |
a8e5382a | 230 | list->type = type; |
b390f610 | 231 | list->next = NULL; |
30730cb8 AO |
232 | list->path = p; |
233 | ||
a8e5382a LM |
234 | if ((list->pci_id = strrchr(list->path, '/')) != NULL) |
235 | list->pci_id++; | |
b390f610 | 236 | } |
2a17c77b | 237 | closedir(driver_dir); |
60f0f54d | 238 | |
75350d87 KF |
239 | /* nvme vmd needs a list separate from sata vmd */ |
240 | if (vmd && type == SYS_DEV_NVME) { | |
60f0f54d PB |
241 | if (list) |
242 | list->next = vmd; | |
243 | else | |
244 | head = vmd; | |
245 | } | |
246 | ||
b390f610 DW |
247 | return head; |
248 | } | |
249 | ||
9c747fa0 | 250 | static struct sys_dev *intel_devices=NULL; |
9bc4ae77 | 251 | static time_t valid_time = 0; |
9c747fa0 | 252 | |
0858eccf AP |
253 | struct sys_dev *device_by_id(__u16 device_id) |
254 | { | |
255 | struct sys_dev *iter; | |
256 | ||
257 | for (iter = intel_devices; iter != NULL; iter = iter->next) | |
258 | if (iter->dev_id == device_id) | |
259 | return iter; | |
260 | return NULL; | |
261 | } | |
262 | ||
d3c11416 AO |
263 | struct sys_dev *device_by_id_and_path(__u16 device_id, const char *path) |
264 | { | |
265 | struct sys_dev *iter; | |
266 | ||
267 | for (iter = intel_devices; iter != NULL; iter = iter->next) | |
268 | if ((iter->dev_id == device_id) && strstr(iter->path, path)) | |
269 | return iter; | |
270 | return NULL; | |
271 | } | |
272 | ||
9c747fa0 LM |
273 | static int devpath_to_ll(const char *dev_path, const char *entry, unsigned long long *val) |
274 | { | |
dd5ab402 | 275 | char path[strnlen(dev_path, PATH_MAX) + strnlen(entry, PATH_MAX) + 2]; |
9c747fa0 LM |
276 | int fd; |
277 | int n; | |
278 | ||
279 | sprintf(path, "%s/%s", dev_path, entry); | |
280 | ||
281 | fd = open(path, O_RDONLY); | |
282 | if (fd < 0) | |
283 | return -1; | |
284 | n = sysfs_fd_get_ll(fd, val); | |
285 | close(fd); | |
286 | return n; | |
287 | } | |
288 | ||
60f0f54d | 289 | __u16 devpath_to_vendor(const char *dev_path) |
b390f610 DW |
290 | { |
291 | char path[strlen(dev_path) + strlen("/vendor") + 1]; | |
292 | char vendor[7]; | |
293 | int fd; | |
294 | __u16 id = 0xffff; | |
295 | int n; | |
296 | ||
297 | sprintf(path, "%s/vendor", dev_path); | |
298 | ||
299 | fd = open(path, O_RDONLY); | |
300 | if (fd < 0) | |
301 | return 0xffff; | |
302 | ||
303 | n = read(fd, vendor, sizeof(vendor)); | |
304 | if (n == sizeof(vendor)) { | |
305 | vendor[n - 1] = '\0'; | |
306 | id = strtoul(vendor, NULL, 16); | |
307 | } | |
308 | close(fd); | |
309 | ||
310 | return id; | |
311 | } | |
312 | ||
fcebeb77 MT |
313 | /* Description: Read text value of dev_path/entry field |
314 | * Parameters: | |
315 | * dev_path - sysfs path to the device | |
316 | * entry - entry to be read | |
317 | * buf - buffer for read value | |
318 | * len - size of buf | |
319 | * verbose - error logging level | |
320 | */ | |
321 | int devpath_to_char(const char *dev_path, const char *entry, char *buf, int len, | |
322 | int verbose) | |
323 | { | |
324 | char path[PATH_MAX]; | |
325 | ||
326 | snprintf(path, sizeof(path), "%s/%s", dev_path, entry); | |
327 | if (load_sys(path, buf, len)) { | |
328 | if (verbose) | |
329 | pr_err("Cannot read %s, aborting\n", path); | |
330 | return 1; | |
331 | } | |
332 | ||
333 | return 0; | |
334 | } | |
335 | ||
a8e5382a | 336 | struct sys_dev *find_intel_devices(void) |
b390f610 | 337 | { |
614902f6 | 338 | struct sys_dev *ahci, *isci, *nvme; |
a8e5382a | 339 | |
9bc4ae77 N |
340 | if (valid_time > time(0) - 10) |
341 | return intel_devices; | |
342 | ||
343 | if (intel_devices) | |
344 | free_sys_dev(&intel_devices); | |
345 | ||
a8e5382a | 346 | isci = find_driver_devices("pci", "isci"); |
75350d87 | 347 | /* Searching for AHCI will return list of SATA and SATA VMD controllers */ |
a8e5382a | 348 | ahci = find_driver_devices("pci", "ahci"); |
60f0f54d | 349 | /* Searching for NVMe will return list of NVMe and VMD controllers */ |
614902f6 | 350 | nvme = find_driver_devices("pci", "nvme"); |
a8e5382a | 351 | |
614902f6 PB |
352 | if (!isci && !ahci) { |
353 | ahci = nvme; | |
354 | } else if (!ahci) { | |
a8e5382a | 355 | ahci = isci; |
614902f6 PB |
356 | struct sys_dev *elem = ahci; |
357 | while (elem->next) | |
358 | elem = elem->next; | |
359 | elem->next = nvme; | |
a8e5382a LM |
360 | } else { |
361 | struct sys_dev *elem = ahci; | |
362 | while (elem->next) | |
363 | elem = elem->next; | |
364 | elem->next = isci; | |
614902f6 PB |
365 | while (elem->next) |
366 | elem = elem->next; | |
367 | elem->next = nvme; | |
a8e5382a | 368 | } |
9bc4ae77 N |
369 | intel_devices = ahci; |
370 | valid_time = time(0); | |
371 | return intel_devices; | |
b390f610 DW |
372 | } |
373 | ||
3c8bfb5d | 374 | /* |
fc13853f | 375 | * PCI Expansion ROM Data Structure Format */ |
3c8bfb5d LM |
376 | struct pciExpDataStructFormat { |
377 | __u8 ver[4]; | |
378 | __u16 vendorID; | |
379 | __u16 deviceID; | |
6b781d33 | 380 | __u16 devListOffset; |
f666bcc6 PB |
381 | __u16 pciDataStructLen; |
382 | __u8 pciDataStructRev; | |
3c8bfb5d LM |
383 | } __attribute__ ((packed)); |
384 | ||
5e1d6128 | 385 | struct orom_entry *orom_entries; |
0858eccf | 386 | |
72a45777 | 387 | const struct orom_entry *get_orom_entry_by_device_id(__u16 dev_id) |
6b781d33 | 388 | { |
5e1d6128 AP |
389 | struct orom_entry *entry; |
390 | struct devid_list *devid; | |
6b781d33 | 391 | |
5e1d6128 AP |
392 | for (entry = orom_entries; entry; entry = entry->next) { |
393 | for (devid = entry->devid_list; devid; devid = devid->next) { | |
394 | if (devid->devid == dev_id) | |
72a45777 | 395 | return entry; |
6b781d33 AP |
396 | } |
397 | } | |
5e1d6128 | 398 | |
6b781d33 AP |
399 | return NULL; |
400 | } | |
401 | ||
72a45777 PB |
402 | const struct imsm_orom *get_orom_by_device_id(__u16 dev_id) |
403 | { | |
404 | const struct orom_entry *entry = get_orom_entry_by_device_id(dev_id); | |
405 | ||
406 | if (entry) | |
407 | return &entry->orom; | |
408 | ||
409 | return NULL; | |
410 | } | |
411 | ||
5e1d6128 | 412 | static struct orom_entry *add_orom(const struct imsm_orom *orom) |
6b781d33 | 413 | { |
5e1d6128 AP |
414 | struct orom_entry *list; |
415 | struct orom_entry *prev = NULL; | |
416 | ||
417 | for (list = orom_entries; list; prev = list, list = list->next) | |
418 | ; | |
419 | ||
420 | list = xmalloc(sizeof(struct orom_entry)); | |
421 | list->orom = *orom; | |
422 | list->devid_list = NULL; | |
423 | list->next = NULL; | |
424 | ||
425 | if (prev == NULL) | |
426 | orom_entries = list; | |
427 | else | |
428 | prev->next = list; | |
429 | ||
430 | return list; | |
6b781d33 AP |
431 | } |
432 | ||
5e1d6128 | 433 | static void add_orom_device_id(struct orom_entry *entry, __u16 dev_id) |
6b781d33 | 434 | { |
6b781d33 AP |
435 | struct devid_list *list; |
436 | struct devid_list *prev = NULL; | |
437 | ||
5e1d6128 AP |
438 | for (list = entry->devid_list; list; prev = list, list = list->next) { |
439 | if (list->devid == dev_id) | |
6b781d33 | 440 | return; |
6b781d33 | 441 | } |
5e1d6128 AP |
442 | list = xmalloc(sizeof(struct devid_list)); |
443 | list->devid = dev_id; | |
444 | list->next = NULL; | |
445 | ||
446 | if (prev == NULL) | |
447 | entry->devid_list = list; | |
448 | else | |
449 | prev->next = list; | |
6b781d33 | 450 | } |
fc13853f | 451 | |
3c8bfb5d | 452 | static int scan(const void *start, const void *end, const void *data) |
b390f610 DW |
453 | { |
454 | int offset; | |
6b781d33 | 455 | const struct imsm_orom *imsm_mem = NULL; |
b390f610 | 456 | int len = (end - start); |
3c8bfb5d LM |
457 | struct pciExpDataStructFormat *ptr= (struct pciExpDataStructFormat *)data; |
458 | ||
9c747fa0 LM |
459 | if (data + 0x18 > end) { |
460 | dprintf("cannot find pciExpDataStruct \n"); | |
461 | return 0; | |
462 | } | |
463 | ||
3c8bfb5d LM |
464 | dprintf("ptr->vendorID: %lx __le16_to_cpu(ptr->deviceID): %lx \n", |
465 | (ulong) __le16_to_cpu(ptr->vendorID), | |
466 | (ulong) __le16_to_cpu(ptr->deviceID)); | |
467 | ||
6b781d33 | 468 | if (__le16_to_cpu(ptr->vendorID) != 0x8086) |
3c8bfb5d | 469 | return 0; |
b390f610 | 470 | |
5c4cc0c8 RS |
471 | if (get_orom_by_device_id(ptr->deviceID)) |
472 | return 0; | |
473 | ||
b390f610 | 474 | for (offset = 0; offset < len; offset += 4) { |
6b781d33 AP |
475 | const void *mem = start + offset; |
476 | ||
477 | if ((memcmp(mem, IMSM_OROM_SIGNATURE, 4) == 0)) { | |
478 | imsm_mem = mem; | |
479 | break; | |
b390f610 DW |
480 | } |
481 | } | |
6b781d33 AP |
482 | |
483 | if (!imsm_mem) | |
484 | return 0; | |
485 | ||
5e1d6128 | 486 | struct orom_entry *orom = add_orom(imsm_mem); |
6b781d33 | 487 | |
f666bcc6 PB |
488 | /* only PciDataStructure with revision 3 and above supports devices list. */ |
489 | if (ptr->pciDataStructRev >= 3 && ptr->devListOffset) { | |
6b781d33 AP |
490 | const __u16 *dev_list = (void *)ptr + ptr->devListOffset; |
491 | int i; | |
492 | ||
493 | for (i = 0; dev_list[i] != 0; i++) | |
494 | add_orom_device_id(orom, dev_list[i]); | |
495 | } else { | |
496 | add_orom_device_id(orom, __le16_to_cpu(ptr->deviceID)); | |
497 | } | |
498 | ||
b390f610 DW |
499 | return 0; |
500 | } | |
501 | ||
6b781d33 | 502 | const struct imsm_orom *imsm_platform_test(struct sys_dev *hba) |
fc13853f | 503 | { |
6b781d33 AP |
504 | struct imsm_orom orom = { |
505 | .signature = IMSM_OROM_SIGNATURE, | |
506 | .rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 | | |
507 | IMSM_OROM_RLC_RAID10 | IMSM_OROM_RLC_RAID5, | |
508 | .sss = IMSM_OROM_SSS_4kB | IMSM_OROM_SSS_8kB | | |
509 | IMSM_OROM_SSS_16kB | IMSM_OROM_SSS_32kB | | |
510 | IMSM_OROM_SSS_64kB | IMSM_OROM_SSS_128kB | | |
511 | IMSM_OROM_SSS_256kB | IMSM_OROM_SSS_512kB | | |
512 | IMSM_OROM_SSS_1MB | IMSM_OROM_SSS_2MB, | |
513 | .dpa = IMSM_OROM_DISKS_PER_ARRAY, | |
514 | .tds = IMSM_OROM_TOTAL_DISKS, | |
515 | .vpa = IMSM_OROM_VOLUMES_PER_ARRAY, | |
516 | .vphba = IMSM_OROM_VOLUMES_PER_HBA | |
517 | }; | |
518 | orom.attr = orom.rlc | IMSM_OROM_ATTR_ChecksumVerify; | |
fc13853f LM |
519 | |
520 | if (check_env("IMSM_TEST_OROM_NORAID5")) { | |
6b781d33 | 521 | orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 | |
fc13853f LM |
522 | IMSM_OROM_RLC_RAID10; |
523 | } | |
6b781d33 AP |
524 | if (check_env("IMSM_TEST_AHCI_EFI_NORAID5") && (hba->type == SYS_DEV_SAS)) { |
525 | orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 | | |
fc13853f LM |
526 | IMSM_OROM_RLC_RAID10; |
527 | } | |
6b781d33 AP |
528 | if (check_env("IMSM_TEST_SCU_EFI_NORAID5") && (hba->type == SYS_DEV_SATA)) { |
529 | orom.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 | | |
fc13853f | 530 | IMSM_OROM_RLC_RAID10; |
cceebc67 DW |
531 | } |
532 | ||
5e1d6128 | 533 | struct orom_entry *ret = add_orom(&orom); |
6b781d33 AP |
534 | |
535 | add_orom_device_id(ret, hba->dev_id); | |
536 | ||
5e1d6128 | 537 | return &ret->orom; |
fc13853f LM |
538 | } |
539 | ||
6b781d33 | 540 | static const struct imsm_orom *find_imsm_hba_orom(struct sys_dev *hba) |
fc13853f LM |
541 | { |
542 | unsigned long align; | |
543 | ||
6b781d33 AP |
544 | if (check_env("IMSM_TEST_OROM")) |
545 | return imsm_platform_test(hba); | |
fc13853f | 546 | |
fc13853f | 547 | /* return empty OROM capabilities in EFI test mode */ |
6b781d33 | 548 | if (check_env("IMSM_TEST_AHCI_EFI") || check_env("IMSM_TEST_SCU_EFI")) |
fc13853f LM |
549 | return NULL; |
550 | ||
9bc4ae77 | 551 | find_intel_devices(); |
9c747fa0 LM |
552 | |
553 | if (intel_devices == NULL) | |
b390f610 DW |
554 | return NULL; |
555 | ||
556 | /* scan option-rom memory looking for an imsm signature */ | |
969c2555 DW |
557 | if (check_env("IMSM_SAFE_OROM_SCAN")) |
558 | align = 2048; | |
559 | else | |
560 | align = 512; | |
561 | if (probe_roms_init(align) != 0) | |
b390f610 DW |
562 | return NULL; |
563 | probe_roms(); | |
9c747fa0 | 564 | /* ignore return value - True is returned if both adapater roms are found */ |
fc13853f | 565 | scan_adapter_roms(scan); |
b390f610 DW |
566 | probe_roms_exit(); |
567 | ||
6b781d33 | 568 | return get_orom_by_device_id(hba->dev_id); |
fc13853f LM |
569 | } |
570 | ||
1a901471 LM |
571 | #define EFI_GUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ |
572 | ((struct efi_guid) \ | |
573 | {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ | |
574 | (b) & 0xff, ((b) >> 8) & 0xff, \ | |
575 | (c) & 0xff, ((c) >> 8) & 0xff, \ | |
576 | (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) | |
fc13853f | 577 | |
5a6baf66 | 578 | #define SYS_EFI_VAR_PATH "/sys/firmware/efi/vars" |
88605db9 | 579 | #define SYS_EFIVARS_PATH "/sys/firmware/efi/efivars" |
5a6baf66 LM |
580 | #define SCU_PROP "RstScuV" |
581 | #define AHCI_PROP "RstSataV" | |
81188ef8 | 582 | #define AHCI_SSATA_PROP "RstsSatV" |
f94df5cf | 583 | #define AHCI_TSATA_PROP "RsttSatV" |
ea7a02a3 OJ |
584 | #define VROC_VMD_PROP "RstUefiV" |
585 | #define RST_VMD_PROP "RstVmdV" | |
5a6baf66 LM |
586 | |
587 | #define VENDOR_GUID \ | |
588 | EFI_GUID(0x193dfefa, 0xa445, 0x4302, 0x99, 0xd8, 0xef, 0x3a, 0xad, 0x1a, 0x04, 0xc6) | |
589 | ||
6b781d33 | 590 | #define PCI_CLASS_RAID_CNTRL 0x010400 |
5a6baf66 | 591 | |
f94df5cf MT |
592 | static int read_efi_var(void *buffer, ssize_t buf_size, |
593 | const char *variable_name, struct efi_guid guid) | |
88605db9 AP |
594 | { |
595 | char path[PATH_MAX]; | |
596 | char buf[GUID_STR_MAX]; | |
597 | int fd; | |
598 | ssize_t n; | |
599 | ||
600 | snprintf(path, PATH_MAX, "%s/%s-%s", SYS_EFIVARS_PATH, variable_name, guid_str(buf, guid)); | |
601 | ||
602 | fd = open(path, O_RDONLY); | |
603 | if (fd < 0) | |
604 | return 1; | |
605 | ||
606 | /* read the variable attributes and ignore it */ | |
607 | n = read(fd, buf, sizeof(__u32)); | |
608 | if (n < 0) { | |
609 | close(fd); | |
610 | return 1; | |
611 | } | |
612 | ||
613 | /* read the variable data */ | |
614 | n = read(fd, buffer, buf_size); | |
615 | close(fd); | |
616 | if (n < buf_size) | |
617 | return 1; | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
f94df5cf MT |
622 | static int read_efi_variable(void *buffer, ssize_t buf_size, |
623 | const char *variable_name, struct efi_guid guid) | |
5a6baf66 | 624 | { |
5a6baf66 LM |
625 | char path[PATH_MAX]; |
626 | char buf[GUID_STR_MAX]; | |
aae4c111 HCP |
627 | int dfd; |
628 | ssize_t n, var_data_len; | |
629 | ||
88605db9 AP |
630 | /* Try to read the variable using the new efivarfs interface first. |
631 | * If that fails, fall back to the old sysfs-efivars interface. */ | |
632 | if (!read_efi_var(buffer, buf_size, variable_name, guid)) | |
633 | return 0; | |
634 | ||
aae4c111 HCP |
635 | snprintf(path, PATH_MAX, "%s/%s-%s/size", SYS_EFI_VAR_PATH, variable_name, guid_str(buf, guid)); |
636 | ||
637 | dprintf("EFI VAR: path=%s\n", path); | |
638 | /* get size of variable data */ | |
639 | dfd = open(path, O_RDONLY); | |
640 | if (dfd < 0) | |
641 | return 1; | |
642 | ||
643 | n = read(dfd, &buf, sizeof(buf)); | |
644 | close(dfd); | |
645 | if (n < 0) | |
646 | return 1; | |
647 | buf[n] = '\0'; | |
648 | ||
649 | errno = 0; | |
650 | var_data_len = strtoul(buf, NULL, 16); | |
d7be7d87 JS |
651 | if ((errno == ERANGE && (var_data_len == LONG_MAX)) || |
652 | (errno != 0 && var_data_len == 0)) | |
aae4c111 HCP |
653 | return 1; |
654 | ||
655 | /* get data */ | |
656 | snprintf(path, PATH_MAX, "%s/%s-%s/data", SYS_EFI_VAR_PATH, variable_name, guid_str(buf, guid)); | |
657 | ||
658 | dprintf("EFI VAR: path=%s\n", path); | |
659 | dfd = open(path, O_RDONLY); | |
660 | if (dfd < 0) | |
661 | return 1; | |
662 | ||
663 | n = read(dfd, buffer, buf_size); | |
664 | close(dfd); | |
665 | if (n != var_data_len || n < buf_size) { | |
666 | return 1; | |
667 | } | |
668 | ||
669 | return 0; | |
670 | } | |
5a6baf66 | 671 | |
6b781d33 | 672 | const struct imsm_orom *find_imsm_efi(struct sys_dev *hba) |
aae4c111 | 673 | { |
6b781d33 | 674 | struct imsm_orom orom; |
5e1d6128 | 675 | struct orom_entry *ret; |
f94df5cf MT |
676 | static const char * const sata_efivars[] = {AHCI_PROP, AHCI_SSATA_PROP, |
677 | AHCI_TSATA_PROP}; | |
ea7a02a3 | 678 | static const char * const vmd_efivars[] = {VROC_VMD_PROP, RST_VMD_PROP}; |
f94df5cf | 679 | unsigned long i; |
5a6baf66 | 680 | |
6b781d33 AP |
681 | if (check_env("IMSM_TEST_AHCI_EFI") || check_env("IMSM_TEST_SCU_EFI")) |
682 | return imsm_platform_test(hba); | |
5a6baf66 | 683 | |
5a6baf66 | 684 | /* OROM test is set, return that there is no EFI capabilities */ |
aae4c111 | 685 | if (check_env("IMSM_TEST_OROM")) |
5a6baf66 | 686 | return NULL; |
5a6baf66 | 687 | |
f94df5cf MT |
688 | switch (hba->type) { |
689 | case SYS_DEV_SAS: | |
690 | if (!read_efi_variable(&orom, sizeof(orom), SCU_PROP, | |
691 | VENDOR_GUID)) | |
692 | break; | |
81188ef8 | 693 | |
f94df5cf MT |
694 | return NULL; |
695 | case SYS_DEV_SATA: | |
696 | if (hba->class != PCI_CLASS_RAID_CNTRL) | |
697 | return NULL; | |
81188ef8 | 698 | |
f94df5cf MT |
699 | for (i = 0; i < ARRAY_SIZE(sata_efivars); i++) { |
700 | if (!read_efi_variable(&orom, sizeof(orom), | |
701 | sata_efivars[i], VENDOR_GUID)) | |
702 | break; | |
81188ef8 | 703 | |
81188ef8 | 704 | } |
f94df5cf MT |
705 | if (i == ARRAY_SIZE(sata_efivars)) |
706 | return NULL; | |
81188ef8 | 707 | |
f94df5cf MT |
708 | break; |
709 | case SYS_DEV_VMD: | |
75350d87 | 710 | case SYS_DEV_SATA_VMD: |
ea7a02a3 OJ |
711 | for (i = 0; i < ARRAY_SIZE(vmd_efivars); i++) { |
712 | if (!read_efi_variable(&orom, sizeof(orom), | |
713 | vmd_efivars[i], VENDOR_GUID)) | |
714 | break; | |
715 | } | |
716 | ||
717 | if (i == ARRAY_SIZE(vmd_efivars)) | |
718 | return NULL; | |
719 | ||
720 | break; | |
f94df5cf MT |
721 | default: |
722 | return NULL; | |
723 | } | |
5a6baf66 | 724 | |
6b781d33 AP |
725 | ret = add_orom(&orom); |
726 | add_orom_device_id(ret, hba->dev_id); | |
60f0f54d | 727 | ret->type = hba->type; |
6b781d33 | 728 | |
5e1d6128 | 729 | return &ret->orom; |
fc13853f LM |
730 | } |
731 | ||
614902f6 PB |
732 | const struct imsm_orom *find_imsm_nvme(struct sys_dev *hba) |
733 | { | |
5e1d6128 | 734 | static struct orom_entry *nvme_orom; |
614902f6 PB |
735 | |
736 | if (hba->type != SYS_DEV_NVME) | |
737 | return NULL; | |
738 | ||
739 | if (!nvme_orom) { | |
740 | struct imsm_orom nvme_orom_compat = { | |
741 | .signature = IMSM_NVME_OROM_COMPAT_SIGNATURE, | |
742 | .rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 | | |
743 | IMSM_OROM_RLC_RAID10 | IMSM_OROM_RLC_RAID5, | |
744 | .sss = IMSM_OROM_SSS_4kB | IMSM_OROM_SSS_8kB | | |
745 | IMSM_OROM_SSS_16kB | IMSM_OROM_SSS_32kB | | |
746 | IMSM_OROM_SSS_64kB | IMSM_OROM_SSS_128kB, | |
747 | .dpa = IMSM_OROM_DISKS_PER_ARRAY_NVME, | |
748 | .tds = IMSM_OROM_TOTAL_DISKS_NVME, | |
749 | .vpa = IMSM_OROM_VOLUMES_PER_ARRAY, | |
750 | .vphba = IMSM_OROM_TOTAL_DISKS_NVME / 2 * IMSM_OROM_VOLUMES_PER_ARRAY, | |
751 | .attr = IMSM_OROM_ATTR_2TB | IMSM_OROM_ATTR_2TB_DISK, | |
0858eccf | 752 | .driver_features = IMSM_OROM_CAPABILITIES_EnterpriseSystem |
614902f6 PB |
753 | }; |
754 | nvme_orom = add_orom(&nvme_orom_compat); | |
755 | } | |
756 | add_orom_device_id(nvme_orom, hba->dev_id); | |
60f0f54d | 757 | nvme_orom->type = SYS_DEV_NVME; |
5e1d6128 | 758 | return &nvme_orom->orom; |
614902f6 PB |
759 | } |
760 | ||
8d1114be MG |
761 | #define VMD_REGISTER_OFFSET 0x3FC |
762 | #define VMD_REGISTER_SKU_SHIFT 1 | |
763 | #define VMD_REGISTER_SKU_MASK (0x00000007) | |
764 | #define VMD_REGISTER_SKU_PREMIUM 2 | |
765 | #define MD_REGISTER_VER_MAJOR_SHIFT 4 | |
766 | #define MD_REGISTER_VER_MAJOR_MASK (0x0000000F) | |
767 | #define MD_REGISTER_VER_MINOR_SHIFT 8 | |
768 | #define MD_REGISTER_VER_MINOR_MASK (0x0000000F) | |
769 | ||
770 | /* | |
771 | * read_vmd_register() - Reads VMD register and writes contents to buff ptr | |
772 | * @buff: buffer for vmd register data, should be the size of uint32_t | |
773 | * | |
774 | * Return: 0 on success, 1 on error | |
775 | */ | |
776 | int read_vmd_register(uint32_t *buff, struct sys_dev *hba) | |
777 | { | |
778 | int fd; | |
779 | char vmd_pci_config_path[PATH_MAX]; | |
780 | ||
781 | if (!vmd_domain_to_controller(hba, vmd_pci_config_path)) | |
782 | return 1; | |
783 | ||
784 | strncat(vmd_pci_config_path, "/config", PATH_MAX - strnlen(vmd_pci_config_path, PATH_MAX)); | |
785 | ||
786 | fd = open(vmd_pci_config_path, O_RDONLY); | |
787 | if (fd < 0) | |
788 | return 1; | |
789 | ||
790 | if (pread(fd, buff, sizeof(uint32_t), VMD_REGISTER_OFFSET) != sizeof(uint32_t)) { | |
791 | close(fd); | |
792 | return 1; | |
793 | } | |
794 | close(fd); | |
795 | return 0; | |
796 | } | |
797 | ||
798 | /* | |
799 | * add_vmd_orom() - Adds VMD orom cap to orom list, writes orom_entry ptr into vmd_orom | |
800 | * @vmd_orom: pointer to orom entry pointer | |
801 | * | |
802 | * Return: 0 on success, 1 on error | |
803 | */ | |
804 | int add_vmd_orom(struct orom_entry **vmd_orom, struct sys_dev *hba) | |
805 | { | |
806 | uint8_t sku; | |
807 | uint32_t vmd_register_data; | |
808 | struct imsm_orom vmd_orom_cap = { | |
809 | .signature = IMSM_VMD_OROM_COMPAT_SIGNATURE, | |
810 | .sss = IMSM_OROM_SSS_4kB | IMSM_OROM_SSS_8kB | | |
811 | IMSM_OROM_SSS_16kB | IMSM_OROM_SSS_32kB | | |
812 | IMSM_OROM_SSS_64kB | IMSM_OROM_SSS_128kB, | |
813 | .dpa = IMSM_OROM_DISKS_PER_ARRAY_NVME, | |
814 | .tds = IMSM_OROM_TOTAL_DISKS_VMD, | |
815 | .vpa = IMSM_OROM_VOLUMES_PER_ARRAY, | |
816 | .vphba = IMSM_OROM_VOLUMES_PER_HBA_VMD, | |
817 | .attr = IMSM_OROM_ATTR_2TB | IMSM_OROM_ATTR_2TB_DISK, | |
818 | .driver_features = IMSM_OROM_CAPABILITIES_EnterpriseSystem | | |
819 | IMSM_OROM_CAPABILITIES_TPV | |
820 | }; | |
821 | ||
822 | if (read_vmd_register(&vmd_register_data, hba) != 0) | |
823 | return 1; | |
824 | ||
825 | sku = (uint8_t)((vmd_register_data >> VMD_REGISTER_SKU_SHIFT) & | |
826 | VMD_REGISTER_SKU_MASK); | |
827 | ||
828 | if (sku == VMD_REGISTER_SKU_PREMIUM) | |
829 | vmd_orom_cap.rlc = IMSM_OROM_RLC_RAID0 | IMSM_OROM_RLC_RAID1 | | |
830 | IMSM_OROM_RLC_RAID10 | IMSM_OROM_RLC_RAID5; | |
831 | else | |
832 | vmd_orom_cap.rlc = IMSM_OROM_RLC_RAID_CNG; | |
833 | ||
834 | vmd_orom_cap.major_ver = (uint8_t) | |
835 | ((vmd_register_data >> MD_REGISTER_VER_MAJOR_SHIFT) & | |
836 | MD_REGISTER_VER_MAJOR_MASK); | |
837 | vmd_orom_cap.minor_ver = (uint8_t) | |
838 | ((vmd_register_data >> MD_REGISTER_VER_MINOR_SHIFT) & | |
839 | MD_REGISTER_VER_MINOR_MASK); | |
840 | ||
841 | *vmd_orom = add_orom(&vmd_orom_cap); | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | const struct imsm_orom *find_imsm_vmd(struct sys_dev *hba) | |
847 | { | |
848 | static struct orom_entry *vmd_orom; | |
849 | ||
850 | if (hba->type != SYS_DEV_VMD) | |
851 | return NULL; | |
852 | ||
853 | if (!vmd_orom && add_vmd_orom(&vmd_orom, hba) != 0) | |
854 | return NULL; | |
855 | ||
856 | add_orom_device_id(vmd_orom, hba->dev_id); | |
857 | vmd_orom->type = SYS_DEV_VMD; | |
858 | return &vmd_orom->orom; | |
859 | } | |
860 | ||
6b781d33 | 861 | const struct imsm_orom *find_imsm_capability(struct sys_dev *hba) |
fc13853f | 862 | { |
6b781d33 AP |
863 | const struct imsm_orom *cap = get_orom_by_device_id(hba->dev_id); |
864 | ||
865 | if (cap) | |
866 | return cap; | |
fc13853f | 867 | |
614902f6 PB |
868 | if (hba->type == SYS_DEV_NVME) |
869 | return find_imsm_nvme(hba); | |
8d1114be MG |
870 | |
871 | cap = find_imsm_efi(hba); | |
872 | if (cap) | |
5a6baf66 | 873 | return cap; |
8d1114be MG |
874 | |
875 | if (hba->type == SYS_DEV_VMD) { | |
876 | cap = find_imsm_vmd(hba); | |
877 | if (cap) | |
878 | return cap; | |
879 | } | |
880 | ||
881 | cap = find_imsm_hba_orom(hba); | |
882 | if (cap) | |
fc13853f | 883 | return cap; |
614902f6 | 884 | |
b390f610 DW |
885 | return NULL; |
886 | } | |
25921536 | 887 | |
d835518b BK |
888 | /* Check whether the nvme device is represented by nvme subsytem, |
889 | * if yes virtual path should be changed to hardware device path, | |
890 | * to allow IMSM capabilities detection. | |
891 | * Returns: | |
892 | * hardware path to device - if the device is represented via | |
893 | * nvme virtual subsytem | |
894 | * NULL - if the device is not represented via nvme virtual subsytem | |
895 | */ | |
896 | char *get_nvme_multipath_dev_hw_path(const char *dev_path) | |
897 | { | |
898 | DIR *dir; | |
899 | struct dirent *ent; | |
900 | char *rp = NULL; | |
901 | ||
902 | if (strncmp(dev_path, NVME_SUBSYS_PATH, strlen(NVME_SUBSYS_PATH)) != 0) | |
903 | return NULL; | |
904 | ||
905 | dir = opendir(dev_path); | |
906 | if (!dir) | |
907 | return NULL; | |
908 | ||
909 | for (ent = readdir(dir); ent; ent = readdir(dir)) { | |
910 | char buf[strlen(dev_path) + strlen(ent->d_name) + 1]; | |
911 | ||
912 | /* Check if dir is a controller, ignore namespaces*/ | |
913 | if (!(strncmp(ent->d_name, "nvme", 4) == 0) || | |
914 | (strrchr(ent->d_name, 'n') != &ent->d_name[0])) | |
915 | continue; | |
916 | ||
917 | sprintf(buf, "%s/%s", dev_path, ent->d_name); | |
918 | rp = realpath(buf, NULL); | |
919 | break; | |
920 | } | |
921 | ||
922 | closedir(dir); | |
923 | return rp; | |
924 | } | |
925 | ||
7c798f87 MT |
926 | /* Description: Return part or whole realpath for the dev |
927 | * Parameters: | |
928 | * dev - the device to be quered | |
929 | * dev_level - level of "/device" entries. It allows to caller to access | |
930 | * virtual or physical devices which are on "path" to quered | |
931 | * one. | |
932 | * buf - optional, must be PATH_MAX size. If set, then will be used. | |
933 | */ | |
934 | char *devt_to_devpath(dev_t dev, int dev_level, char *buf) | |
25921536 | 935 | { |
7c798f87 MT |
936 | char device[PATH_MAX]; |
937 | char *hw_path; | |
938 | int i; | |
939 | unsigned long device_free_len = sizeof(device) - 1; | |
940 | char dev_str[] = "/device"; | |
941 | unsigned long dev_str_len = strlen(dev_str); | |
942 | ||
943 | snprintf(device, sizeof(device), "/sys/dev/block/%d:%d", major(dev), | |
944 | minor(dev)); | |
945 | ||
946 | /* If caller wants block device, return path to it even if it is exposed | |
947 | * via virtual layer. | |
948 | */ | |
949 | if (dev_level == 0) | |
950 | return realpath(device, buf); | |
25921536 | 951 | |
7c798f87 MT |
952 | device_free_len -= strlen(device); |
953 | for (i = 0; i < dev_level; i++) { | |
954 | if (device_free_len < dev_str_len) | |
955 | return NULL; | |
d835518b | 956 | |
7c798f87 | 957 | strncat(device, dev_str, device_free_len); |
d835518b | 958 | |
7c798f87 MT |
959 | /* Resolve nvme-subsystem abstraction if needed |
960 | */ | |
961 | device_free_len -= dev_str_len; | |
962 | if (i == 0) { | |
963 | char rp[PATH_MAX]; | |
964 | ||
965 | if (!realpath(device, rp)) | |
966 | return NULL; | |
967 | hw_path = get_nvme_multipath_dev_hw_path(rp); | |
968 | if (hw_path) { | |
969 | strcpy(device, hw_path); | |
970 | device_free_len = sizeof(device) - | |
971 | strlen(device) - 1; | |
972 | free(hw_path); | |
973 | } | |
974 | } | |
d835518b BK |
975 | } |
976 | ||
7c798f87 | 977 | return realpath(device, buf); |
25921536 DW |
978 | } |
979 | ||
7c798f87 | 980 | char *diskfd_to_devpath(int fd, int dev_level, char *buf) |
25921536 DW |
981 | { |
982 | /* return the device path for a disk, return NULL on error or fd | |
983 | * refers to a partition | |
984 | */ | |
985 | struct stat st; | |
986 | ||
987 | if (fstat(fd, &st) != 0) | |
988 | return NULL; | |
989 | if (!S_ISBLK(st.st_mode)) | |
990 | return NULL; | |
991 | ||
7c798f87 | 992 | return devt_to_devpath(st.st_rdev, dev_level, buf); |
25921536 DW |
993 | } |
994 | ||
995 | int path_attached_to_hba(const char *disk_path, const char *hba_path) | |
996 | { | |
997 | int rc; | |
998 | ||
fc13853f LM |
999 | if (check_env("IMSM_TEST_AHCI_DEV") || |
1000 | check_env("IMSM_TEST_SCU_DEV")) { | |
1001 | return 1; | |
1002 | } | |
1003 | ||
25921536 DW |
1004 | if (!disk_path || !hba_path) |
1005 | return 0; | |
a8e5382a | 1006 | dprintf("hba: %s - disk: %s\n", hba_path, disk_path); |
25921536 DW |
1007 | if (strncmp(disk_path, hba_path, strlen(hba_path)) == 0) |
1008 | rc = 1; | |
1009 | else | |
1010 | rc = 0; | |
1011 | ||
1012 | return rc; | |
1013 | } | |
1014 | ||
1015 | int devt_attached_to_hba(dev_t dev, const char *hba_path) | |
1016 | { | |
7c798f87 | 1017 | char *disk_path = devt_to_devpath(dev, 1, NULL); |
25921536 DW |
1018 | int rc = path_attached_to_hba(disk_path, hba_path); |
1019 | ||
1020 | if (disk_path) | |
1021 | free(disk_path); | |
1022 | ||
1023 | return rc; | |
1024 | } | |
1025 | ||
1026 | int disk_attached_to_hba(int fd, const char *hba_path) | |
1027 | { | |
7c798f87 | 1028 | char *disk_path = diskfd_to_devpath(fd, 1, NULL); |
25921536 DW |
1029 | int rc = path_attached_to_hba(disk_path, hba_path); |
1030 | ||
1031 | if (disk_path) | |
1032 | free(disk_path); | |
1033 | ||
1034 | return rc; | |
1035 | } | |
60f0f54d PB |
1036 | |
1037 | char *vmd_domain_to_controller(struct sys_dev *hba, char *buf) | |
1038 | { | |
1039 | struct dirent *ent; | |
1040 | DIR *dir; | |
1041 | char path[PATH_MAX]; | |
1042 | ||
1043 | if (!hba) | |
1044 | return NULL; | |
1045 | ||
1046 | if (hba->type != SYS_DEV_VMD) | |
1047 | return NULL; | |
1048 | ||
1049 | dir = opendir("/sys/bus/pci/drivers/vmd"); | |
b9135011 JS |
1050 | if (!dir) |
1051 | return NULL; | |
60f0f54d | 1052 | |
b9135011 | 1053 | for (ent = readdir(dir); ent; ent = readdir(dir)) { |
60f0f54d PB |
1054 | sprintf(path, "/sys/bus/pci/drivers/vmd/%s/domain/device", |
1055 | ent->d_name); | |
1056 | ||
1057 | if (!realpath(path, buf)) | |
1058 | continue; | |
1059 | ||
1060 | if (strncmp(buf, hba->path, strlen(buf)) == 0) { | |
1061 | sprintf(path, "/sys/bus/pci/drivers/vmd/%s", ent->d_name); | |
b9135011 | 1062 | closedir(dir); |
7071320a | 1063 | return realpath(path, buf); |
60f0f54d PB |
1064 | } |
1065 | } | |
b9135011 JS |
1066 | |
1067 | closedir(dir); | |
60f0f54d PB |
1068 | return NULL; |
1069 | } | |
8662f92d MT |
1070 | |
1071 | /* Scan over all controller's namespaces and compare nsid value to verify if | |
1072 | * current one is supported. The routine doesn't check IMSM capabilities for | |
1073 | * namespace. Only one nvme namespace is supported by IMSM. | |
1074 | * Paramteres: | |
1075 | * fd - open descriptor to the nvme namespace | |
1076 | * verbose - error logging level | |
a8f3cfd5 | 1077 | * Returns: |
8662f92d MT |
1078 | * 1 - if namespace is supported |
1079 | * 0 - otherwise | |
a8f3cfd5 | 1080 | */ |
8662f92d | 1081 | int imsm_is_nvme_namespace_supported(int fd, int verbose) |
a8f3cfd5 | 1082 | { |
8662f92d MT |
1083 | DIR *dir = NULL; |
1084 | struct dirent *ent; | |
1085 | char cntrl_path[PATH_MAX]; | |
1086 | char ns_path[PATH_MAX]; | |
1087 | unsigned long long lowest_nsid = ULLONG_MAX; | |
1088 | unsigned long long this_nsid; | |
1089 | int rv = 0; | |
a8f3cfd5 | 1090 | |
a8f3cfd5 | 1091 | |
8662f92d MT |
1092 | if (!diskfd_to_devpath(fd, 1, cntrl_path) || |
1093 | !diskfd_to_devpath(fd, 0, ns_path)) { | |
1094 | if (verbose) | |
1095 | pr_err("Cannot get device paths\n"); | |
1096 | goto abort; | |
1097 | } | |
a8f3cfd5 | 1098 | |
a8f3cfd5 | 1099 | |
8662f92d | 1100 | if (devpath_to_ll(ns_path, "nsid", &this_nsid)) { |
a8f3cfd5 | 1101 | if (verbose) |
8662f92d MT |
1102 | pr_err("Cannot read nsid value for %s", |
1103 | basename(ns_path)); | |
1104 | goto abort; | |
a8f3cfd5 | 1105 | } |
8662f92d MT |
1106 | |
1107 | dir = opendir(cntrl_path); | |
1108 | if (!dir) | |
1109 | goto abort; | |
1110 | ||
1111 | /* The lowest nvme namespace is supported */ | |
1112 | for (ent = readdir(dir); ent; ent = readdir(dir)) { | |
1113 | unsigned long long curr_nsid; | |
1114 | char curr_ns_path[PATH_MAX + 256]; | |
1115 | ||
1116 | if (!strstr(ent->d_name, "nvme")) | |
1117 | continue; | |
1118 | ||
1119 | snprintf(curr_ns_path, sizeof(curr_ns_path), "%s/%s", | |
1120 | cntrl_path, ent->d_name); | |
1121 | ||
1122 | if (devpath_to_ll(curr_ns_path, "nsid", &curr_nsid)) | |
1123 | goto abort; | |
1124 | ||
1125 | if (lowest_nsid > curr_nsid) | |
1126 | lowest_nsid = curr_nsid; | |
1127 | } | |
1128 | ||
1129 | if (this_nsid == lowest_nsid) | |
1130 | rv = 1; | |
1131 | else if (verbose) | |
1132 | pr_err("IMSM is supported on the lowest NVMe namespace\n"); | |
1133 | ||
1134 | abort: | |
1135 | if (dir) | |
1136 | closedir(dir); | |
1137 | ||
1138 | return rv; | |
a8f3cfd5 | 1139 | } |
d835518b BK |
1140 | |
1141 | /* Verify if multipath is supported by NVMe controller | |
1142 | * Returns: | |
1143 | * 0 - not supported | |
1144 | * 1 - supported | |
1145 | */ | |
1146 | int is_multipath_nvme(int disk_fd) | |
1147 | { | |
d835518b | 1148 | char ns_path[PATH_MAX]; |
d835518b | 1149 | |
7c798f87 | 1150 | if (!diskfd_to_devpath(disk_fd, 0, ns_path)) |
d835518b BK |
1151 | return 0; |
1152 | ||
1153 | if (strncmp(ns_path, NVME_SUBSYS_PATH, strlen(NVME_SUBSYS_PATH)) == 0) | |
1154 | return 1; | |
1155 | ||
1156 | return 0; | |
1157 | } |