Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Node information (ConfigROM) collection and management. | |
3 | * | |
4 | * Copyright (C) 2000 Andreas E. Bombe | |
5 | * 2001-2003 Ben Collins <bcollins@debian.net> | |
6 | * | |
7 | * This code is licensed under the GPL. See the file COPYING in the root | |
8 | * directory of the kernel sources for details. | |
9 | */ | |
10 | ||
09a9a45d | 11 | #include <linux/bitmap.h> |
1da177e4 | 12 | #include <linux/kernel.h> |
1da177e4 LT |
13 | #include <linux/list.h> |
14 | #include <linux/slab.h> | |
1da177e4 | 15 | #include <linux/delay.h> |
d2f119fe | 16 | #include <linux/kthread.h> |
8252bbb1 | 17 | #include <linux/module.h> |
1da177e4 | 18 | #include <linux/moduleparam.h> |
9543a931 | 19 | #include <linux/mutex.h> |
7dfb7103 | 20 | #include <linux/freezer.h> |
6188e10d | 21 | #include <linux/semaphore.h> |
1da177e4 LT |
22 | #include <asm/atomic.h> |
23 | ||
de4394f1 SR |
24 | #include "csr.h" |
25 | #include "highlevel.h" | |
26 | #include "hosts.h" | |
1da177e4 LT |
27 | #include "ieee1394.h" |
28 | #include "ieee1394_core.h" | |
de4394f1 SR |
29 | #include "ieee1394_hotplug.h" |
30 | #include "ieee1394_types.h" | |
1da177e4 | 31 | #include "ieee1394_transactions.h" |
1da177e4 LT |
32 | #include "nodemgr.h" |
33 | ||
1934b8b6 | 34 | static int ignore_drivers; |
3a632fe2 | 35 | module_param(ignore_drivers, int, S_IRUGO | S_IWUSR); |
1da177e4 LT |
36 | MODULE_PARM_DESC(ignore_drivers, "Disable automatic probing for drivers."); |
37 | ||
38 | struct nodemgr_csr_info { | |
39 | struct hpsb_host *host; | |
40 | nodeid_t nodeid; | |
41 | unsigned int generation; | |
647dcb5f | 42 | unsigned int speed_unverified:1; |
1da177e4 LT |
43 | }; |
44 | ||
45 | ||
647dcb5f BC |
46 | /* |
47 | * Correct the speed map entry. This is necessary | |
48 | * - for nodes with link speed < phy speed, | |
49 | * - for 1394b nodes with negotiated phy port speed < IEEE1394_SPEED_MAX. | |
50 | * A possible speed is determined by trial and error, using quadlet reads. | |
51 | */ | |
52 | static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr, | |
53 | quadlet_t *buffer) | |
54 | { | |
55 | quadlet_t q; | |
56 | u8 i, *speed, old_speed, good_speed; | |
7fdfc909 | 57 | int error; |
647dcb5f | 58 | |
d7530a1e | 59 | speed = &(ci->host->speed[NODEID_TO_NODE(ci->nodeid)]); |
647dcb5f BC |
60 | old_speed = *speed; |
61 | good_speed = IEEE1394_SPEED_MAX + 1; | |
62 | ||
63 | /* Try every speed from S100 to old_speed. | |
64 | * If we did it the other way around, a too low speed could be caught | |
65 | * if the retry succeeded for some other reason, e.g. because the link | |
66 | * just finished its initialization. */ | |
67 | for (i = IEEE1394_SPEED_100; i <= old_speed; i++) { | |
68 | *speed = i; | |
7fdfc909 SR |
69 | error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr, |
70 | &q, sizeof(quadlet_t)); | |
71 | if (error) | |
647dcb5f BC |
72 | break; |
73 | *buffer = q; | |
74 | good_speed = i; | |
75 | } | |
76 | if (good_speed <= IEEE1394_SPEED_MAX) { | |
77 | HPSB_DEBUG("Speed probe of node " NODE_BUS_FMT " yields %s", | |
78 | NODE_BUS_ARGS(ci->host, ci->nodeid), | |
79 | hpsb_speedto_str[good_speed]); | |
80 | *speed = good_speed; | |
81 | ci->speed_unverified = 0; | |
82 | return 0; | |
83 | } | |
84 | *speed = old_speed; | |
7fdfc909 | 85 | return error; |
647dcb5f | 86 | } |
1da177e4 LT |
87 | |
88 | static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length, | |
d41bba2d | 89 | void *buffer, void *__ci) |
1da177e4 LT |
90 | { |
91 | struct nodemgr_csr_info *ci = (struct nodemgr_csr_info*)__ci; | |
7fdfc909 | 92 | int i, error; |
1da177e4 | 93 | |
e31a127c | 94 | for (i = 1; ; i++) { |
7fdfc909 SR |
95 | error = hpsb_read(ci->host, ci->nodeid, ci->generation, addr, |
96 | buffer, length); | |
97 | if (!error) { | |
647dcb5f BC |
98 | ci->speed_unverified = 0; |
99 | break; | |
100 | } | |
101 | /* Give up after 3rd failure. */ | |
102 | if (i == 3) | |
1da177e4 LT |
103 | break; |
104 | ||
647dcb5f BC |
105 | /* The ieee1394_core guessed the node's speed capability from |
106 | * the self ID. Check whether a lower speed works. */ | |
107 | if (ci->speed_unverified && length == sizeof(quadlet_t)) { | |
7fdfc909 SR |
108 | error = nodemgr_check_speed(ci, addr, buffer); |
109 | if (!error) | |
647dcb5f BC |
110 | break; |
111 | } | |
1da177e4 LT |
112 | if (msleep_interruptible(334)) |
113 | return -EINTR; | |
114 | } | |
7fdfc909 | 115 | return error; |
1da177e4 LT |
116 | } |
117 | ||
118 | static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci) | |
119 | { | |
7fb9addb | 120 | return (be32_to_cpu(bus_info_data[2]) >> 8) & 0x3; |
1da177e4 LT |
121 | } |
122 | ||
123 | static struct csr1212_bus_ops nodemgr_csr_ops = { | |
124 | .bus_read = nodemgr_bus_read, | |
125 | .get_max_rom = nodemgr_get_max_rom | |
126 | }; | |
127 | ||
128 | ||
129 | /* | |
130 | * Basically what we do here is start off retrieving the bus_info block. | |
131 | * From there will fill in some info about the node, verify it is of IEEE | |
132 | * 1394 type, and that the crc checks out ok. After that we start off with | |
133 | * the root directory, and subdirectories. To do this, we retrieve the | |
134 | * quadlet header for a directory, find out the length, and retrieve the | |
135 | * complete directory entry (be it a leaf or a directory). We then process | |
136 | * it and add the info to our structure for that particular node. | |
137 | * | |
138 | * We verify CRC's along the way for each directory/block/leaf. The entire | |
139 | * node structure is generic, and simply stores the information in a way | |
140 | * that's easy to parse by the protocol interface. | |
141 | */ | |
142 | ||
143 | /* | |
144 | * The nodemgr relies heavily on the Driver Model for device callbacks and | |
145 | * driver/device mappings. The old nodemgr used to handle all this itself, | |
146 | * but now we are much simpler because of the LDM. | |
147 | */ | |
148 | ||
1da177e4 LT |
149 | struct host_info { |
150 | struct hpsb_host *host; | |
151 | struct list_head list; | |
d2f119fe | 152 | struct task_struct *thread; |
1da177e4 LT |
153 | }; |
154 | ||
155 | static int nodemgr_bus_match(struct device * dev, struct device_driver * drv); | |
7eff2e7a | 156 | static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env); |
1da177e4 LT |
157 | static void nodemgr_resume_ne(struct node_entry *ne); |
158 | static void nodemgr_remove_ne(struct node_entry *ne); | |
159 | static struct node_entry *find_entry_by_guid(u64 guid); | |
160 | ||
161 | struct bus_type ieee1394_bus_type = { | |
162 | .name = "ieee1394", | |
163 | .match = nodemgr_bus_match, | |
164 | }; | |
165 | ||
dd7f2928 | 166 | static void host_cls_release(struct device *dev) |
1da177e4 | 167 | { |
dd7f2928 | 168 | put_device(&container_of((dev), struct hpsb_host, host_dev)->device); |
1da177e4 LT |
169 | } |
170 | ||
171 | struct class hpsb_host_class = { | |
172 | .name = "ieee1394_host", | |
dd7f2928 | 173 | .dev_release = host_cls_release, |
1da177e4 LT |
174 | }; |
175 | ||
dd7f2928 | 176 | static void ne_cls_release(struct device *dev) |
1da177e4 | 177 | { |
dd7f2928 | 178 | put_device(&container_of((dev), struct node_entry, node_dev)->device); |
1da177e4 LT |
179 | } |
180 | ||
181 | static struct class nodemgr_ne_class = { | |
182 | .name = "ieee1394_node", | |
dd7f2928 | 183 | .dev_release = ne_cls_release, |
1da177e4 LT |
184 | }; |
185 | ||
dd7f2928 | 186 | static void ud_cls_release(struct device *dev) |
1da177e4 | 187 | { |
dd7f2928 | 188 | put_device(&container_of((dev), struct unit_directory, unit_dev)->device); |
1da177e4 LT |
189 | } |
190 | ||
191 | /* The name here is only so that unit directory hotplug works with old | |
dd7f2928 KS |
192 | * style hotplug, which only ever did unit directories anyway. |
193 | */ | |
1da177e4 LT |
194 | static struct class nodemgr_ud_class = { |
195 | .name = "ieee1394", | |
dd7f2928 KS |
196 | .dev_release = ud_cls_release, |
197 | .dev_uevent = nodemgr_uevent, | |
1da177e4 LT |
198 | }; |
199 | ||
200 | static struct hpsb_highlevel nodemgr_highlevel; | |
201 | ||
202 | ||
203 | static void nodemgr_release_ud(struct device *dev) | |
204 | { | |
205 | struct unit_directory *ud = container_of(dev, struct unit_directory, device); | |
206 | ||
207 | if (ud->vendor_name_kv) | |
208 | csr1212_release_keyval(ud->vendor_name_kv); | |
209 | if (ud->model_name_kv) | |
210 | csr1212_release_keyval(ud->model_name_kv); | |
211 | ||
212 | kfree(ud); | |
213 | } | |
214 | ||
215 | static void nodemgr_release_ne(struct device *dev) | |
216 | { | |
217 | struct node_entry *ne = container_of(dev, struct node_entry, device); | |
218 | ||
219 | if (ne->vendor_name_kv) | |
220 | csr1212_release_keyval(ne->vendor_name_kv); | |
221 | ||
222 | kfree(ne); | |
223 | } | |
224 | ||
225 | ||
226 | static void nodemgr_release_host(struct device *dev) | |
227 | { | |
228 | struct hpsb_host *host = container_of(dev, struct hpsb_host, device); | |
229 | ||
230 | csr1212_destroy_csr(host->csr.rom); | |
231 | ||
232 | kfree(host); | |
233 | } | |
234 | ||
235 | static int nodemgr_ud_platform_data; | |
236 | ||
237 | static struct device nodemgr_dev_template_ud = { | |
238 | .bus = &ieee1394_bus_type, | |
239 | .release = nodemgr_release_ud, | |
240 | .platform_data = &nodemgr_ud_platform_data, | |
241 | }; | |
242 | ||
243 | static struct device nodemgr_dev_template_ne = { | |
244 | .bus = &ieee1394_bus_type, | |
245 | .release = nodemgr_release_ne, | |
246 | }; | |
247 | ||
8252bbb1 SR |
248 | /* This dummy driver prevents the host devices from being scanned. We have no |
249 | * useful drivers for them yet, and there would be a deadlock possible if the | |
250 | * driver core scans the host device while the host's low-level driver (i.e. | |
251 | * the host's parent device) is being removed. */ | |
252 | static struct device_driver nodemgr_mid_layer_driver = { | |
253 | .bus = &ieee1394_bus_type, | |
254 | .name = "nodemgr", | |
255 | .owner = THIS_MODULE, | |
256 | }; | |
257 | ||
1da177e4 LT |
258 | struct device nodemgr_dev_template_host = { |
259 | .bus = &ieee1394_bus_type, | |
260 | .release = nodemgr_release_host, | |
261 | }; | |
262 | ||
263 | ||
264 | #define fw_attr(class, class_type, field, type, format_string) \ | |
e404e274 | 265 | static ssize_t fw_show_##class##_##field (struct device *dev, struct device_attribute *attr, char *buf)\ |
1da177e4 LT |
266 | { \ |
267 | class_type *class; \ | |
268 | class = container_of(dev, class_type, device); \ | |
269 | return sprintf(buf, format_string, (type)class->field); \ | |
270 | } \ | |
271 | static struct device_attribute dev_attr_##class##_##field = { \ | |
272 | .attr = {.name = __stringify(field), .mode = S_IRUGO }, \ | |
273 | .show = fw_show_##class##_##field, \ | |
274 | }; | |
275 | ||
276 | #define fw_attr_td(class, class_type, td_kv) \ | |
e404e274 | 277 | static ssize_t fw_show_##class##_##td_kv (struct device *dev, struct device_attribute *attr, char *buf)\ |
1da177e4 LT |
278 | { \ |
279 | int len; \ | |
280 | class_type *class = container_of(dev, class_type, device); \ | |
281 | len = (class->td_kv->value.leaf.len - 2) * sizeof(quadlet_t); \ | |
282 | memcpy(buf, \ | |
283 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(class->td_kv), \ | |
284 | len); \ | |
51ec138c | 285 | while (buf[len - 1] == '\0') \ |
1da177e4 LT |
286 | len--; \ |
287 | buf[len++] = '\n'; \ | |
288 | buf[len] = '\0'; \ | |
289 | return len; \ | |
290 | } \ | |
291 | static struct device_attribute dev_attr_##class##_##td_kv = { \ | |
292 | .attr = {.name = __stringify(td_kv), .mode = S_IRUGO }, \ | |
293 | .show = fw_show_##class##_##td_kv, \ | |
294 | }; | |
295 | ||
296 | ||
297 | #define fw_drv_attr(field, type, format_string) \ | |
298 | static ssize_t fw_drv_show_##field (struct device_driver *drv, char *buf) \ | |
299 | { \ | |
300 | struct hpsb_protocol_driver *driver; \ | |
301 | driver = container_of(drv, struct hpsb_protocol_driver, driver); \ | |
302 | return sprintf(buf, format_string, (type)driver->field);\ | |
303 | } \ | |
304 | static struct driver_attribute driver_attr_drv_##field = { \ | |
d41bba2d SR |
305 | .attr = {.name = __stringify(field), .mode = S_IRUGO }, \ |
306 | .show = fw_drv_show_##field, \ | |
1da177e4 LT |
307 | }; |
308 | ||
309 | ||
e404e274 | 310 | static ssize_t fw_show_ne_bus_options(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
311 | { |
312 | struct node_entry *ne = container_of(dev, struct node_entry, device); | |
313 | ||
314 | return sprintf(buf, "IRMC(%d) CMC(%d) ISC(%d) BMC(%d) PMC(%d) GEN(%d) " | |
315 | "LSPD(%d) MAX_REC(%d) MAX_ROM(%d) CYC_CLK_ACC(%d)\n", | |
316 | ne->busopt.irmc, | |
317 | ne->busopt.cmc, ne->busopt.isc, ne->busopt.bmc, | |
318 | ne->busopt.pmc, ne->busopt.generation, ne->busopt.lnkspd, | |
319 | ne->busopt.max_rec, | |
320 | ne->busopt.max_rom, | |
321 | ne->busopt.cyc_clk_acc); | |
322 | } | |
323 | static DEVICE_ATTR(bus_options,S_IRUGO,fw_show_ne_bus_options,NULL); | |
324 | ||
325 | ||
9951903e SR |
326 | #ifdef HPSB_DEBUG_TLABELS |
327 | static ssize_t fw_show_ne_tlabels_free(struct device *dev, | |
328 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
329 | { |
330 | struct node_entry *ne = container_of(dev, struct node_entry, device); | |
9951903e SR |
331 | unsigned long flags; |
332 | unsigned long *tp = ne->host->tl_pool[NODEID_TO_NODE(ne->nodeid)].map; | |
333 | int tf; | |
1da177e4 | 334 | |
9951903e SR |
335 | spin_lock_irqsave(&hpsb_tlabel_lock, flags); |
336 | tf = 64 - bitmap_weight(tp, 64); | |
337 | spin_unlock_irqrestore(&hpsb_tlabel_lock, flags); | |
1da177e4 | 338 | |
9951903e | 339 | return sprintf(buf, "%d\n", tf); |
1da177e4 | 340 | } |
9951903e | 341 | static DEVICE_ATTR(tlabels_free,S_IRUGO,fw_show_ne_tlabels_free,NULL); |
1da177e4 LT |
342 | |
343 | ||
9951903e SR |
344 | static ssize_t fw_show_ne_tlabels_mask(struct device *dev, |
345 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
346 | { |
347 | struct node_entry *ne = container_of(dev, struct node_entry, device); | |
9951903e SR |
348 | unsigned long flags; |
349 | unsigned long *tp = ne->host->tl_pool[NODEID_TO_NODE(ne->nodeid)].map; | |
350 | u64 tm; | |
351 | ||
352 | spin_lock_irqsave(&hpsb_tlabel_lock, flags); | |
1da177e4 | 353 | #if (BITS_PER_LONG <= 32) |
9951903e | 354 | tm = ((u64)tp[0] << 32) + tp[1]; |
1da177e4 | 355 | #else |
9951903e | 356 | tm = tp[0]; |
1da177e4 | 357 | #endif |
9951903e SR |
358 | spin_unlock_irqrestore(&hpsb_tlabel_lock, flags); |
359 | ||
7f588039 | 360 | return sprintf(buf, "0x%016llx\n", (unsigned long long)tm); |
1da177e4 LT |
361 | } |
362 | static DEVICE_ATTR(tlabels_mask, S_IRUGO, fw_show_ne_tlabels_mask, NULL); | |
9951903e | 363 | #endif /* HPSB_DEBUG_TLABELS */ |
1da177e4 LT |
364 | |
365 | ||
e404e274 | 366 | static ssize_t fw_set_ignore_driver(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
367 | { |
368 | struct unit_directory *ud = container_of(dev, struct unit_directory, device); | |
369 | int state = simple_strtoul(buf, NULL, 10); | |
370 | ||
371 | if (state == 1) { | |
1da177e4 | 372 | ud->ignore_driver = 1; |
b07375b1 | 373 | device_release_driver(dev); |
b07375b1 | 374 | } else if (state == 0) |
1da177e4 LT |
375 | ud->ignore_driver = 0; |
376 | ||
377 | return count; | |
378 | } | |
e404e274 | 379 | static ssize_t fw_get_ignore_driver(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
380 | { |
381 | struct unit_directory *ud = container_of(dev, struct unit_directory, device); | |
382 | ||
383 | return sprintf(buf, "%d\n", ud->ignore_driver); | |
384 | } | |
385 | static DEVICE_ATTR(ignore_driver, S_IWUSR | S_IRUGO, fw_get_ignore_driver, fw_set_ignore_driver); | |
386 | ||
387 | ||
388 | static ssize_t fw_set_destroy_node(struct bus_type *bus, const char *buf, size_t count) | |
389 | { | |
390 | struct node_entry *ne; | |
391 | u64 guid = (u64)simple_strtoull(buf, NULL, 16); | |
392 | ||
393 | ne = find_entry_by_guid(guid); | |
394 | ||
395 | if (ne == NULL || !ne->in_limbo) | |
396 | return -EINVAL; | |
397 | ||
398 | nodemgr_remove_ne(ne); | |
399 | ||
400 | return count; | |
401 | } | |
402 | static ssize_t fw_get_destroy_node(struct bus_type *bus, char *buf) | |
403 | { | |
404 | return sprintf(buf, "You can destroy in_limbo nodes by writing their GUID to this file\n"); | |
405 | } | |
406 | static BUS_ATTR(destroy_node, S_IWUSR | S_IRUGO, fw_get_destroy_node, fw_set_destroy_node); | |
407 | ||
1da177e4 | 408 | |
c1c9c7cd SR |
409 | static ssize_t fw_set_rescan(struct bus_type *bus, const char *buf, |
410 | size_t count) | |
1da177e4 | 411 | { |
c1c9c7cd SR |
412 | int error = 0; |
413 | ||
40fd89cc | 414 | if (simple_strtoul(buf, NULL, 10) == 1) |
c1c9c7cd SR |
415 | error = bus_rescan_devices(&ieee1394_bus_type); |
416 | return error ? error : count; | |
1da177e4 LT |
417 | } |
418 | static ssize_t fw_get_rescan(struct bus_type *bus, char *buf) | |
419 | { | |
420 | return sprintf(buf, "You can force a rescan of the bus for " | |
421 | "drivers by writing a 1 to this file\n"); | |
422 | } | |
423 | static BUS_ATTR(rescan, S_IWUSR | S_IRUGO, fw_get_rescan, fw_set_rescan); | |
424 | ||
425 | ||
426 | static ssize_t fw_set_ignore_drivers(struct bus_type *bus, const char *buf, size_t count) | |
427 | { | |
428 | int state = simple_strtoul(buf, NULL, 10); | |
429 | ||
430 | if (state == 1) | |
431 | ignore_drivers = 1; | |
b07375b1 | 432 | else if (state == 0) |
1da177e4 LT |
433 | ignore_drivers = 0; |
434 | ||
435 | return count; | |
436 | } | |
437 | static ssize_t fw_get_ignore_drivers(struct bus_type *bus, char *buf) | |
438 | { | |
439 | return sprintf(buf, "%d\n", ignore_drivers); | |
440 | } | |
441 | static BUS_ATTR(ignore_drivers, S_IWUSR | S_IRUGO, fw_get_ignore_drivers, fw_set_ignore_drivers); | |
442 | ||
443 | ||
444 | struct bus_attribute *const fw_bus_attrs[] = { | |
445 | &bus_attr_destroy_node, | |
446 | &bus_attr_rescan, | |
447 | &bus_attr_ignore_drivers, | |
448 | NULL | |
449 | }; | |
450 | ||
451 | ||
452 | fw_attr(ne, struct node_entry, capabilities, unsigned int, "0x%06x\n") | |
453 | fw_attr(ne, struct node_entry, nodeid, unsigned int, "0x%04x\n") | |
454 | ||
455 | fw_attr(ne, struct node_entry, vendor_id, unsigned int, "0x%06x\n") | |
456 | fw_attr_td(ne, struct node_entry, vendor_name_kv) | |
1da177e4 LT |
457 | |
458 | fw_attr(ne, struct node_entry, guid, unsigned long long, "0x%016Lx\n") | |
459 | fw_attr(ne, struct node_entry, guid_vendor_id, unsigned int, "0x%06x\n") | |
1da177e4 LT |
460 | fw_attr(ne, struct node_entry, in_limbo, int, "%d\n"); |
461 | ||
462 | static struct device_attribute *const fw_ne_attrs[] = { | |
463 | &dev_attr_ne_guid, | |
464 | &dev_attr_ne_guid_vendor_id, | |
465 | &dev_attr_ne_capabilities, | |
466 | &dev_attr_ne_vendor_id, | |
467 | &dev_attr_ne_nodeid, | |
468 | &dev_attr_bus_options, | |
9951903e | 469 | #ifdef HPSB_DEBUG_TLABELS |
1da177e4 | 470 | &dev_attr_tlabels_free, |
1da177e4 | 471 | &dev_attr_tlabels_mask, |
9951903e | 472 | #endif |
1da177e4 LT |
473 | }; |
474 | ||
475 | ||
476 | ||
477 | fw_attr(ud, struct unit_directory, address, unsigned long long, "0x%016Lx\n") | |
478 | fw_attr(ud, struct unit_directory, length, int, "%d\n") | |
479 | /* These are all dependent on the value being provided */ | |
480 | fw_attr(ud, struct unit_directory, vendor_id, unsigned int, "0x%06x\n") | |
481 | fw_attr(ud, struct unit_directory, model_id, unsigned int, "0x%06x\n") | |
482 | fw_attr(ud, struct unit_directory, specifier_id, unsigned int, "0x%06x\n") | |
483 | fw_attr(ud, struct unit_directory, version, unsigned int, "0x%06x\n") | |
484 | fw_attr_td(ud, struct unit_directory, vendor_name_kv) | |
1da177e4 LT |
485 | fw_attr_td(ud, struct unit_directory, model_name_kv) |
486 | ||
487 | static struct device_attribute *const fw_ud_attrs[] = { | |
488 | &dev_attr_ud_address, | |
489 | &dev_attr_ud_length, | |
490 | &dev_attr_ignore_driver, | |
491 | }; | |
492 | ||
493 | ||
494 | fw_attr(host, struct hpsb_host, node_count, int, "%d\n") | |
495 | fw_attr(host, struct hpsb_host, selfid_count, int, "%d\n") | |
496 | fw_attr(host, struct hpsb_host, nodes_active, int, "%d\n") | |
497 | fw_attr(host, struct hpsb_host, in_bus_reset, int, "%d\n") | |
498 | fw_attr(host, struct hpsb_host, is_root, int, "%d\n") | |
499 | fw_attr(host, struct hpsb_host, is_cycmst, int, "%d\n") | |
500 | fw_attr(host, struct hpsb_host, is_irm, int, "%d\n") | |
501 | fw_attr(host, struct hpsb_host, is_busmgr, int, "%d\n") | |
502 | ||
503 | static struct device_attribute *const fw_host_attrs[] = { | |
504 | &dev_attr_host_node_count, | |
505 | &dev_attr_host_selfid_count, | |
506 | &dev_attr_host_nodes_active, | |
507 | &dev_attr_host_in_bus_reset, | |
508 | &dev_attr_host_is_root, | |
509 | &dev_attr_host_is_cycmst, | |
510 | &dev_attr_host_is_irm, | |
511 | &dev_attr_host_is_busmgr, | |
512 | }; | |
513 | ||
514 | ||
515 | static ssize_t fw_show_drv_device_ids(struct device_driver *drv, char *buf) | |
516 | { | |
517 | struct hpsb_protocol_driver *driver; | |
518 | struct ieee1394_device_id *id; | |
519 | int length = 0; | |
520 | char *scratch = buf; | |
521 | ||
d41bba2d | 522 | driver = container_of(drv, struct hpsb_protocol_driver, driver); |
07c7224c SR |
523 | id = driver->id_table; |
524 | if (!id) | |
525 | return 0; | |
1da177e4 | 526 | |
07c7224c | 527 | for (; id->match_flags != 0; id++) { |
1da177e4 LT |
528 | int need_coma = 0; |
529 | ||
530 | if (id->match_flags & IEEE1394_MATCH_VENDOR_ID) { | |
531 | length += sprintf(scratch, "vendor_id=0x%06x", id->vendor_id); | |
532 | scratch = buf + length; | |
533 | need_coma++; | |
534 | } | |
535 | ||
536 | if (id->match_flags & IEEE1394_MATCH_MODEL_ID) { | |
537 | length += sprintf(scratch, "%smodel_id=0x%06x", | |
538 | need_coma++ ? "," : "", | |
539 | id->model_id); | |
540 | scratch = buf + length; | |
541 | } | |
542 | ||
543 | if (id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) { | |
544 | length += sprintf(scratch, "%sspecifier_id=0x%06x", | |
545 | need_coma++ ? "," : "", | |
546 | id->specifier_id); | |
547 | scratch = buf + length; | |
548 | } | |
549 | ||
550 | if (id->match_flags & IEEE1394_MATCH_VERSION) { | |
551 | length += sprintf(scratch, "%sversion=0x%06x", | |
552 | need_coma++ ? "," : "", | |
553 | id->version); | |
554 | scratch = buf + length; | |
555 | } | |
556 | ||
557 | if (need_coma) { | |
558 | *scratch++ = '\n'; | |
559 | length++; | |
560 | } | |
561 | } | |
562 | ||
563 | return length; | |
564 | } | |
565 | static DRIVER_ATTR(device_ids,S_IRUGO,fw_show_drv_device_ids,NULL); | |
566 | ||
567 | ||
568 | fw_drv_attr(name, const char *, "%s\n") | |
569 | ||
570 | static struct driver_attribute *const fw_drv_attrs[] = { | |
571 | &driver_attr_drv_name, | |
572 | &driver_attr_device_ids, | |
573 | }; | |
574 | ||
575 | ||
576 | static void nodemgr_create_drv_files(struct hpsb_protocol_driver *driver) | |
577 | { | |
578 | struct device_driver *drv = &driver->driver; | |
579 | int i; | |
580 | ||
581 | for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++) | |
c1c9c7cd SR |
582 | if (driver_create_file(drv, fw_drv_attrs[i])) |
583 | goto fail; | |
584 | return; | |
585 | fail: | |
9be51c5d | 586 | HPSB_ERR("Failed to add sysfs attribute"); |
1da177e4 LT |
587 | } |
588 | ||
589 | ||
590 | static void nodemgr_remove_drv_files(struct hpsb_protocol_driver *driver) | |
591 | { | |
592 | struct device_driver *drv = &driver->driver; | |
593 | int i; | |
594 | ||
595 | for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++) | |
596 | driver_remove_file(drv, fw_drv_attrs[i]); | |
597 | } | |
598 | ||
599 | ||
600 | static void nodemgr_create_ne_dev_files(struct node_entry *ne) | |
601 | { | |
602 | struct device *dev = &ne->device; | |
603 | int i; | |
604 | ||
605 | for (i = 0; i < ARRAY_SIZE(fw_ne_attrs); i++) | |
c1c9c7cd SR |
606 | if (device_create_file(dev, fw_ne_attrs[i])) |
607 | goto fail; | |
608 | return; | |
609 | fail: | |
9be51c5d | 610 | HPSB_ERR("Failed to add sysfs attribute"); |
1da177e4 LT |
611 | } |
612 | ||
613 | ||
614 | static void nodemgr_create_host_dev_files(struct hpsb_host *host) | |
615 | { | |
616 | struct device *dev = &host->device; | |
617 | int i; | |
618 | ||
619 | for (i = 0; i < ARRAY_SIZE(fw_host_attrs); i++) | |
c1c9c7cd SR |
620 | if (device_create_file(dev, fw_host_attrs[i])) |
621 | goto fail; | |
622 | return; | |
623 | fail: | |
9be51c5d | 624 | HPSB_ERR("Failed to add sysfs attribute"); |
1da177e4 LT |
625 | } |
626 | ||
627 | ||
c1c9c7cd SR |
628 | static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host, |
629 | nodeid_t nodeid); | |
1da177e4 LT |
630 | |
631 | static void nodemgr_update_host_dev_links(struct hpsb_host *host) | |
632 | { | |
633 | struct device *dev = &host->device; | |
634 | struct node_entry *ne; | |
635 | ||
636 | sysfs_remove_link(&dev->kobj, "irm_id"); | |
637 | sysfs_remove_link(&dev->kobj, "busmgr_id"); | |
638 | sysfs_remove_link(&dev->kobj, "host_id"); | |
639 | ||
c1c9c7cd SR |
640 | if ((ne = find_entry_by_nodeid(host, host->irm_id)) && |
641 | sysfs_create_link(&dev->kobj, &ne->device.kobj, "irm_id")) | |
642 | goto fail; | |
643 | if ((ne = find_entry_by_nodeid(host, host->busmgr_id)) && | |
644 | sysfs_create_link(&dev->kobj, &ne->device.kobj, "busmgr_id")) | |
645 | goto fail; | |
646 | if ((ne = find_entry_by_nodeid(host, host->node_id)) && | |
647 | sysfs_create_link(&dev->kobj, &ne->device.kobj, "host_id")) | |
648 | goto fail; | |
649 | return; | |
650 | fail: | |
651 | HPSB_ERR("Failed to update sysfs attributes for host %d", host->id); | |
1da177e4 LT |
652 | } |
653 | ||
654 | static void nodemgr_create_ud_dev_files(struct unit_directory *ud) | |
655 | { | |
656 | struct device *dev = &ud->device; | |
657 | int i; | |
658 | ||
659 | for (i = 0; i < ARRAY_SIZE(fw_ud_attrs); i++) | |
c1c9c7cd SR |
660 | if (device_create_file(dev, fw_ud_attrs[i])) |
661 | goto fail; | |
1da177e4 | 662 | if (ud->flags & UNIT_DIRECTORY_SPECIFIER_ID) |
c1c9c7cd SR |
663 | if (device_create_file(dev, &dev_attr_ud_specifier_id)) |
664 | goto fail; | |
1da177e4 | 665 | if (ud->flags & UNIT_DIRECTORY_VERSION) |
c1c9c7cd SR |
666 | if (device_create_file(dev, &dev_attr_ud_version)) |
667 | goto fail; | |
1da177e4 | 668 | if (ud->flags & UNIT_DIRECTORY_VENDOR_ID) { |
c1c9c7cd SR |
669 | if (device_create_file(dev, &dev_attr_ud_vendor_id)) |
670 | goto fail; | |
671 | if (ud->vendor_name_kv && | |
672 | device_create_file(dev, &dev_attr_ud_vendor_name_kv)) | |
673 | goto fail; | |
1da177e4 | 674 | } |
1da177e4 | 675 | if (ud->flags & UNIT_DIRECTORY_MODEL_ID) { |
c1c9c7cd SR |
676 | if (device_create_file(dev, &dev_attr_ud_model_id)) |
677 | goto fail; | |
678 | if (ud->model_name_kv && | |
679 | device_create_file(dev, &dev_attr_ud_model_name_kv)) | |
680 | goto fail; | |
1da177e4 | 681 | } |
c1c9c7cd SR |
682 | return; |
683 | fail: | |
9be51c5d | 684 | HPSB_ERR("Failed to add sysfs attribute"); |
1da177e4 LT |
685 | } |
686 | ||
687 | ||
688 | static int nodemgr_bus_match(struct device * dev, struct device_driver * drv) | |
689 | { | |
d41bba2d SR |
690 | struct hpsb_protocol_driver *driver; |
691 | struct unit_directory *ud; | |
1da177e4 LT |
692 | struct ieee1394_device_id *id; |
693 | ||
694 | /* We only match unit directories */ | |
695 | if (dev->platform_data != &nodemgr_ud_platform_data) | |
696 | return 0; | |
697 | ||
698 | ud = container_of(dev, struct unit_directory, device); | |
1da177e4 LT |
699 | if (ud->ne->in_limbo || ud->ignore_driver) |
700 | return 0; | |
701 | ||
8252bbb1 SR |
702 | /* We only match drivers of type hpsb_protocol_driver */ |
703 | if (drv == &nodemgr_mid_layer_driver) | |
704 | return 0; | |
705 | ||
706 | driver = container_of(drv, struct hpsb_protocol_driver, driver); | |
d2ace29f SR |
707 | id = driver->id_table; |
708 | if (!id) | |
709 | return 0; | |
710 | ||
711 | for (; id->match_flags != 0; id++) { | |
d41bba2d SR |
712 | if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) && |
713 | id->vendor_id != ud->vendor_id) | |
714 | continue; | |
1da177e4 | 715 | |
d41bba2d SR |
716 | if ((id->match_flags & IEEE1394_MATCH_MODEL_ID) && |
717 | id->model_id != ud->model_id) | |
718 | continue; | |
1da177e4 | 719 | |
d41bba2d SR |
720 | if ((id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) && |
721 | id->specifier_id != ud->specifier_id) | |
722 | continue; | |
1da177e4 | 723 | |
d41bba2d SR |
724 | if ((id->match_flags & IEEE1394_MATCH_VERSION) && |
725 | id->version != ud->version) | |
726 | continue; | |
1da177e4 LT |
727 | |
728 | return 1; | |
d41bba2d | 729 | } |
1da177e4 LT |
730 | |
731 | return 0; | |
732 | } | |
733 | ||
734 | ||
b07375b1 SR |
735 | static DEFINE_MUTEX(nodemgr_serialize_remove_uds); |
736 | ||
73cf6023 DY |
737 | static int __match_ne(struct device *dev, void *data) |
738 | { | |
739 | struct unit_directory *ud; | |
740 | struct node_entry *ne = (struct node_entry *)data; | |
741 | ||
742 | ud = container_of(dev, struct unit_directory, unit_dev); | |
743 | return ud->ne == ne; | |
744 | } | |
745 | ||
1da177e4 LT |
746 | static void nodemgr_remove_uds(struct node_entry *ne) |
747 | { | |
dd7f2928 | 748 | struct device *dev; |
73cf6023 DY |
749 | struct unit_directory *ud; |
750 | ||
751 | /* Use class_find device to iterate the devices. Since this code | |
752 | * may be called from other contexts besides the knodemgrds, | |
753 | * protect it by nodemgr_serialize_remove_uds. | |
b07375b1 | 754 | */ |
b07375b1 | 755 | mutex_lock(&nodemgr_serialize_remove_uds); |
1e4f7bc8 | 756 | for (;;) { |
695794ae GKH |
757 | dev = class_find_device(&nodemgr_ud_class, NULL, ne, |
758 | __match_ne); | |
73cf6023 | 759 | if (!dev) |
1e4f7bc8 | 760 | break; |
73cf6023 DY |
761 | ud = container_of(dev, struct unit_directory, unit_dev); |
762 | put_device(dev); | |
dd7f2928 | 763 | device_unregister(&ud->unit_dev); |
1e4f7bc8 | 764 | device_unregister(&ud->device); |
b07375b1 | 765 | } |
b07375b1 | 766 | mutex_unlock(&nodemgr_serialize_remove_uds); |
1da177e4 LT |
767 | } |
768 | ||
769 | ||
770 | static void nodemgr_remove_ne(struct node_entry *ne) | |
771 | { | |
cec1a311 | 772 | struct device *dev; |
1da177e4 LT |
773 | |
774 | dev = get_device(&ne->device); | |
775 | if (!dev) | |
776 | return; | |
777 | ||
778 | HPSB_DEBUG("Node removed: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", | |
779 | NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid); | |
1da177e4 LT |
780 | nodemgr_remove_uds(ne); |
781 | ||
dd7f2928 | 782 | device_unregister(&ne->node_dev); |
1da177e4 LT |
783 | device_unregister(dev); |
784 | ||
785 | put_device(dev); | |
786 | } | |
787 | ||
64360322 | 788 | static int __nodemgr_remove_host_dev(struct device *dev, void *data) |
789 | { | |
dd7f2928 KS |
790 | if (dev->bus == &ieee1394_bus_type) |
791 | nodemgr_remove_ne(container_of(dev, struct node_entry, | |
792 | device)); | |
64360322 | 793 | return 0; |
794 | } | |
1da177e4 LT |
795 | |
796 | static void nodemgr_remove_host_dev(struct device *dev) | |
797 | { | |
c1c9c7cd | 798 | WARN_ON(device_for_each_child(dev, NULL, __nodemgr_remove_host_dev)); |
1da177e4 LT |
799 | sysfs_remove_link(&dev->kobj, "irm_id"); |
800 | sysfs_remove_link(&dev->kobj, "busmgr_id"); | |
801 | sysfs_remove_link(&dev->kobj, "host_id"); | |
802 | } | |
803 | ||
804 | ||
805 | static void nodemgr_update_bus_options(struct node_entry *ne) | |
806 | { | |
807 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG | |
808 | static const u16 mr[] = { 4, 64, 1024, 0}; | |
809 | #endif | |
810 | quadlet_t busoptions = be32_to_cpu(ne->csr->bus_info_data[2]); | |
811 | ||
d41bba2d SR |
812 | ne->busopt.irmc = (busoptions >> 31) & 1; |
813 | ne->busopt.cmc = (busoptions >> 30) & 1; | |
814 | ne->busopt.isc = (busoptions >> 29) & 1; | |
815 | ne->busopt.bmc = (busoptions >> 28) & 1; | |
816 | ne->busopt.pmc = (busoptions >> 27) & 1; | |
817 | ne->busopt.cyc_clk_acc = (busoptions >> 16) & 0xff; | |
818 | ne->busopt.max_rec = 1 << (((busoptions >> 12) & 0xf) + 1); | |
1da177e4 | 819 | ne->busopt.max_rom = (busoptions >> 8) & 0x3; |
d41bba2d SR |
820 | ne->busopt.generation = (busoptions >> 4) & 0xf; |
821 | ne->busopt.lnkspd = busoptions & 0x7; | |
1da177e4 LT |
822 | |
823 | HPSB_VERBOSE("NodeMgr: raw=0x%08x irmc=%d cmc=%d isc=%d bmc=%d pmc=%d " | |
824 | "cyc_clk_acc=%d max_rec=%d max_rom=%d gen=%d lspd=%d", | |
825 | busoptions, ne->busopt.irmc, ne->busopt.cmc, | |
826 | ne->busopt.isc, ne->busopt.bmc, ne->busopt.pmc, | |
827 | ne->busopt.cyc_clk_acc, ne->busopt.max_rec, | |
828 | mr[ne->busopt.max_rom], | |
829 | ne->busopt.generation, ne->busopt.lnkspd); | |
830 | } | |
831 | ||
832 | ||
833 | static struct node_entry *nodemgr_create_node(octlet_t guid, struct csr1212_csr *csr, | |
834 | struct host_info *hi, nodeid_t nodeid, | |
835 | unsigned int generation) | |
836 | { | |
837 | struct hpsb_host *host = hi->host; | |
8551158a | 838 | struct node_entry *ne; |
1da177e4 | 839 | |
8551158a SR |
840 | ne = kzalloc(sizeof(*ne), GFP_KERNEL); |
841 | if (!ne) | |
c1c9c7cd | 842 | goto fail_alloc; |
1da177e4 | 843 | |
8551158a SR |
844 | ne->host = host; |
845 | ne->nodeid = nodeid; | |
1da177e4 | 846 | ne->generation = generation; |
6848408a | 847 | ne->needs_probe = true; |
1da177e4 | 848 | |
8551158a | 849 | ne->guid = guid; |
1da177e4 | 850 | ne->guid_vendor_id = (guid >> 40) & 0xffffff; |
1da177e4 LT |
851 | ne->csr = csr; |
852 | ||
853 | memcpy(&ne->device, &nodemgr_dev_template_ne, | |
854 | sizeof(ne->device)); | |
855 | ne->device.parent = &host->device; | |
856 | snprintf(ne->device.bus_id, BUS_ID_SIZE, "%016Lx", | |
857 | (unsigned long long)(ne->guid)); | |
858 | ||
dd7f2928 KS |
859 | ne->node_dev.parent = &ne->device; |
860 | ne->node_dev.class = &nodemgr_ne_class; | |
861 | snprintf(ne->node_dev.bus_id, BUS_ID_SIZE, "%016Lx", | |
862 | (unsigned long long)(ne->guid)); | |
1da177e4 | 863 | |
c1c9c7cd SR |
864 | if (device_register(&ne->device)) |
865 | goto fail_devreg; | |
dd7f2928 | 866 | if (device_register(&ne->node_dev)) |
c1c9c7cd | 867 | goto fail_classdevreg; |
1da177e4 LT |
868 | get_device(&ne->device); |
869 | ||
1da177e4 LT |
870 | nodemgr_create_ne_dev_files(ne); |
871 | ||
872 | nodemgr_update_bus_options(ne); | |
873 | ||
874 | HPSB_DEBUG("%s added: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", | |
875 | (host->node_id == nodeid) ? "Host" : "Node", | |
876 | NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid); | |
877 | ||
8551158a | 878 | return ne; |
c1c9c7cd | 879 | |
c1c9c7cd SR |
880 | fail_classdevreg: |
881 | device_unregister(&ne->device); | |
882 | fail_devreg: | |
883 | kfree(ne); | |
884 | fail_alloc: | |
885 | HPSB_ERR("Failed to create node ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", | |
886 | NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid); | |
887 | ||
888 | return NULL; | |
1da177e4 LT |
889 | } |
890 | ||
73cf6023 DY |
891 | static int __match_ne_guid(struct device *dev, void *data) |
892 | { | |
893 | struct node_entry *ne; | |
894 | u64 *guid = (u64 *)data; | |
895 | ||
896 | ne = container_of(dev, struct node_entry, node_dev); | |
897 | return ne->guid == *guid; | |
898 | } | |
1da177e4 LT |
899 | |
900 | static struct node_entry *find_entry_by_guid(u64 guid) | |
901 | { | |
dd7f2928 | 902 | struct device *dev; |
73cf6023 | 903 | struct node_entry *ne; |
1da177e4 | 904 | |
695794ae GKH |
905 | dev = class_find_device(&nodemgr_ne_class, NULL, &guid, |
906 | __match_ne_guid); | |
73cf6023 DY |
907 | if (!dev) |
908 | return NULL; | |
909 | ne = container_of(dev, struct node_entry, node_dev); | |
910 | put_device(dev); | |
1da177e4 | 911 | |
73cf6023 | 912 | return ne; |
1da177e4 LT |
913 | } |
914 | ||
73cf6023 DY |
915 | struct match_nodeid_param { |
916 | struct hpsb_host *host; | |
917 | nodeid_t nodeid; | |
918 | }; | |
919 | ||
920 | static int __match_ne_nodeid(struct device *dev, void *data) | |
921 | { | |
922 | int found = 0; | |
923 | struct node_entry *ne; | |
924 | struct match_nodeid_param *param = (struct match_nodeid_param *)data; | |
925 | ||
926 | if (!dev) | |
927 | goto ret; | |
928 | ne = container_of(dev, struct node_entry, node_dev); | |
929 | if (ne->host == param->host && ne->nodeid == param->nodeid) | |
930 | found = 1; | |
931 | ret: | |
932 | return found; | |
933 | } | |
1da177e4 | 934 | |
b07375b1 SR |
935 | static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host, |
936 | nodeid_t nodeid) | |
1da177e4 | 937 | { |
dd7f2928 | 938 | struct device *dev; |
73cf6023 DY |
939 | struct node_entry *ne; |
940 | struct match_nodeid_param param; | |
1da177e4 | 941 | |
73cf6023 DY |
942 | param.host = host; |
943 | param.nodeid = nodeid; | |
1da177e4 | 944 | |
695794ae GKH |
945 | dev = class_find_device(&nodemgr_ne_class, NULL, ¶m, |
946 | __match_ne_nodeid); | |
73cf6023 DY |
947 | if (!dev) |
948 | return NULL; | |
949 | ne = container_of(dev, struct node_entry, node_dev); | |
950 | put_device(dev); | |
1da177e4 | 951 | |
73cf6023 | 952 | return ne; |
1da177e4 LT |
953 | } |
954 | ||
955 | ||
956 | static void nodemgr_register_device(struct node_entry *ne, | |
957 | struct unit_directory *ud, struct device *parent) | |
958 | { | |
959 | memcpy(&ud->device, &nodemgr_dev_template_ud, | |
960 | sizeof(ud->device)); | |
961 | ||
962 | ud->device.parent = parent; | |
963 | ||
964 | snprintf(ud->device.bus_id, BUS_ID_SIZE, "%s-%u", | |
965 | ne->device.bus_id, ud->id); | |
966 | ||
dd7f2928 KS |
967 | ud->unit_dev.parent = &ud->device; |
968 | ud->unit_dev.class = &nodemgr_ud_class; | |
969 | snprintf(ud->unit_dev.bus_id, BUS_ID_SIZE, "%s-%u", | |
1da177e4 LT |
970 | ne->device.bus_id, ud->id); |
971 | ||
c1c9c7cd SR |
972 | if (device_register(&ud->device)) |
973 | goto fail_devreg; | |
dd7f2928 | 974 | if (device_register(&ud->unit_dev)) |
c1c9c7cd | 975 | goto fail_classdevreg; |
1da177e4 LT |
976 | get_device(&ud->device); |
977 | ||
1da177e4 | 978 | nodemgr_create_ud_dev_files(ud); |
c1c9c7cd SR |
979 | |
980 | return; | |
981 | ||
c1c9c7cd SR |
982 | fail_classdevreg: |
983 | device_unregister(&ud->device); | |
984 | fail_devreg: | |
985 | HPSB_ERR("Failed to create unit %s", ud->device.bus_id); | |
1da177e4 LT |
986 | } |
987 | ||
988 | ||
989 | /* This implementation currently only scans the config rom and its | |
990 | * immediate unit directories looking for software_id and | |
991 | * software_version entries, in order to get driver autoloading working. */ | |
992 | static struct unit_directory *nodemgr_process_unit_directory | |
993 | (struct host_info *hi, struct node_entry *ne, struct csr1212_keyval *ud_kv, | |
994 | unsigned int *id, struct unit_directory *parent) | |
995 | { | |
996 | struct unit_directory *ud; | |
997 | struct unit_directory *ud_child = NULL; | |
998 | struct csr1212_dentry *dentry; | |
999 | struct csr1212_keyval *kv; | |
1000 | u8 last_key_id = 0; | |
1001 | ||
8551158a | 1002 | ud = kzalloc(sizeof(*ud), GFP_KERNEL); |
1da177e4 LT |
1003 | if (!ud) |
1004 | goto unit_directory_error; | |
1005 | ||
1da177e4 LT |
1006 | ud->ne = ne; |
1007 | ud->ignore_driver = ignore_drivers; | |
a52938f3 | 1008 | ud->address = ud_kv->offset + CSR1212_REGISTER_SPACE_BASE; |
d7794c86 | 1009 | ud->directory_id = ud->address & 0xffffff; |
1da177e4 LT |
1010 | ud->ud_kv = ud_kv; |
1011 | ud->id = (*id)++; | |
1012 | ||
1013 | csr1212_for_each_dir_entry(ne->csr, kv, ud_kv, dentry) { | |
1014 | switch (kv->key.id) { | |
1015 | case CSR1212_KV_ID_VENDOR: | |
1016 | if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) { | |
1017 | ud->vendor_id = kv->value.immediate; | |
1018 | ud->flags |= UNIT_DIRECTORY_VENDOR_ID; | |
1da177e4 LT |
1019 | } |
1020 | break; | |
1021 | ||
1022 | case CSR1212_KV_ID_MODEL: | |
1023 | ud->model_id = kv->value.immediate; | |
1024 | ud->flags |= UNIT_DIRECTORY_MODEL_ID; | |
1025 | break; | |
1026 | ||
1027 | case CSR1212_KV_ID_SPECIFIER_ID: | |
1028 | ud->specifier_id = kv->value.immediate; | |
1029 | ud->flags |= UNIT_DIRECTORY_SPECIFIER_ID; | |
1030 | break; | |
1031 | ||
1032 | case CSR1212_KV_ID_VERSION: | |
1033 | ud->version = kv->value.immediate; | |
1034 | ud->flags |= UNIT_DIRECTORY_VERSION; | |
1035 | break; | |
1036 | ||
1037 | case CSR1212_KV_ID_DESCRIPTOR: | |
1038 | if (kv->key.type == CSR1212_KV_TYPE_LEAF && | |
1039 | CSR1212_DESCRIPTOR_LEAF_TYPE(kv) == 0 && | |
1040 | CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) == 0 && | |
1041 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) == 0 && | |
1042 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) == 0 && | |
1043 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) == 0) { | |
1044 | switch (last_key_id) { | |
1045 | case CSR1212_KV_ID_VENDOR: | |
1da177e4 | 1046 | csr1212_keep_keyval(kv); |
17a19b79 | 1047 | ud->vendor_name_kv = kv; |
1da177e4 LT |
1048 | break; |
1049 | ||
1050 | case CSR1212_KV_ID_MODEL: | |
1da177e4 | 1051 | csr1212_keep_keyval(kv); |
17a19b79 | 1052 | ud->model_name_kv = kv; |
1da177e4 LT |
1053 | break; |
1054 | ||
1055 | } | |
1056 | } /* else if (kv->key.type == CSR1212_KV_TYPE_DIRECTORY) ... */ | |
1057 | break; | |
1058 | ||
1059 | case CSR1212_KV_ID_DEPENDENT_INFO: | |
1060 | /* Logical Unit Number */ | |
1061 | if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) { | |
1062 | if (ud->flags & UNIT_DIRECTORY_HAS_LUN) { | |
bfe89d72 | 1063 | ud_child = kmemdup(ud, sizeof(*ud_child), GFP_KERNEL); |
1da177e4 LT |
1064 | if (!ud_child) |
1065 | goto unit_directory_error; | |
1da177e4 LT |
1066 | nodemgr_register_device(ne, ud_child, &ne->device); |
1067 | ud_child = NULL; | |
1068 | ||
1069 | ud->id = (*id)++; | |
1070 | } | |
1071 | ud->lun = kv->value.immediate; | |
1072 | ud->flags |= UNIT_DIRECTORY_HAS_LUN; | |
1073 | ||
1074 | /* Logical Unit Directory */ | |
1075 | } else if (kv->key.type == CSR1212_KV_TYPE_DIRECTORY) { | |
1076 | /* This should really be done in SBP2 as this is | |
1077 | * doing SBP2 specific parsing. | |
1078 | */ | |
1079 | ||
1080 | /* first register the parent unit */ | |
1081 | ud->flags |= UNIT_DIRECTORY_HAS_LUN_DIRECTORY; | |
1082 | if (ud->device.bus != &ieee1394_bus_type) | |
1083 | nodemgr_register_device(ne, ud, &ne->device); | |
1084 | ||
1085 | /* process the child unit */ | |
1086 | ud_child = nodemgr_process_unit_directory(hi, ne, kv, id, ud); | |
1087 | ||
1088 | if (ud_child == NULL) | |
1089 | break; | |
1090 | ||
312c004d | 1091 | /* inherit unspecified values, the driver core picks it up */ |
1da177e4 LT |
1092 | if ((ud->flags & UNIT_DIRECTORY_MODEL_ID) && |
1093 | !(ud_child->flags & UNIT_DIRECTORY_MODEL_ID)) | |
1094 | { | |
1095 | ud_child->flags |= UNIT_DIRECTORY_MODEL_ID; | |
1096 | ud_child->model_id = ud->model_id; | |
1097 | } | |
1098 | if ((ud->flags & UNIT_DIRECTORY_SPECIFIER_ID) && | |
1099 | !(ud_child->flags & UNIT_DIRECTORY_SPECIFIER_ID)) | |
1100 | { | |
1101 | ud_child->flags |= UNIT_DIRECTORY_SPECIFIER_ID; | |
1102 | ud_child->specifier_id = ud->specifier_id; | |
1103 | } | |
1104 | if ((ud->flags & UNIT_DIRECTORY_VERSION) && | |
1105 | !(ud_child->flags & UNIT_DIRECTORY_VERSION)) | |
1106 | { | |
1107 | ud_child->flags |= UNIT_DIRECTORY_VERSION; | |
1108 | ud_child->version = ud->version; | |
1109 | } | |
1110 | ||
1111 | /* register the child unit */ | |
1112 | ud_child->flags |= UNIT_DIRECTORY_LUN_DIRECTORY; | |
1113 | nodemgr_register_device(ne, ud_child, &ud->device); | |
1114 | } | |
1115 | ||
1116 | break; | |
1117 | ||
d7794c86 SR |
1118 | case CSR1212_KV_ID_DIRECTORY_ID: |
1119 | ud->directory_id = kv->value.immediate; | |
1120 | break; | |
1121 | ||
1da177e4 LT |
1122 | default: |
1123 | break; | |
1124 | } | |
1125 | last_key_id = kv->key.id; | |
1126 | } | |
1127 | ||
1128 | /* do not process child units here and only if not already registered */ | |
1129 | if (!parent && ud->device.bus != &ieee1394_bus_type) | |
1130 | nodemgr_register_device(ne, ud, &ne->device); | |
1131 | ||
1132 | return ud; | |
1133 | ||
1134 | unit_directory_error: | |
616b859f | 1135 | kfree(ud); |
1da177e4 LT |
1136 | return NULL; |
1137 | } | |
1138 | ||
1139 | ||
1140 | static void nodemgr_process_root_directory(struct host_info *hi, struct node_entry *ne) | |
1141 | { | |
1142 | unsigned int ud_id = 0; | |
1143 | struct csr1212_dentry *dentry; | |
638d5bb8 | 1144 | struct csr1212_keyval *kv, *vendor_name_kv = NULL; |
1da177e4 LT |
1145 | u8 last_key_id = 0; |
1146 | ||
6848408a | 1147 | ne->needs_probe = false; |
1da177e4 LT |
1148 | |
1149 | csr1212_for_each_dir_entry(ne->csr, kv, ne->csr->root_kv, dentry) { | |
1150 | switch (kv->key.id) { | |
1151 | case CSR1212_KV_ID_VENDOR: | |
1152 | ne->vendor_id = kv->value.immediate; | |
1da177e4 LT |
1153 | break; |
1154 | ||
1155 | case CSR1212_KV_ID_NODE_CAPABILITIES: | |
1156 | ne->capabilities = kv->value.immediate; | |
1157 | break; | |
1158 | ||
1159 | case CSR1212_KV_ID_UNIT: | |
1160 | nodemgr_process_unit_directory(hi, ne, kv, &ud_id, NULL); | |
1161 | break; | |
1162 | ||
1163 | case CSR1212_KV_ID_DESCRIPTOR: | |
1164 | if (last_key_id == CSR1212_KV_ID_VENDOR) { | |
1165 | if (kv->key.type == CSR1212_KV_TYPE_LEAF && | |
1166 | CSR1212_DESCRIPTOR_LEAF_TYPE(kv) == 0 && | |
1167 | CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) == 0 && | |
1168 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) == 0 && | |
1169 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) == 0 && | |
1170 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) == 0) { | |
1da177e4 | 1171 | csr1212_keep_keyval(kv); |
638d5bb8 | 1172 | vendor_name_kv = kv; |
1da177e4 LT |
1173 | } |
1174 | } | |
1175 | break; | |
1176 | } | |
1177 | last_key_id = kv->key.id; | |
1178 | } | |
1179 | ||
93245472 | 1180 | if (ne->vendor_name_kv) { |
638d5bb8 SR |
1181 | kv = ne->vendor_name_kv; |
1182 | ne->vendor_name_kv = vendor_name_kv; | |
1183 | csr1212_release_keyval(kv); | |
1184 | } else if (vendor_name_kv) { | |
1185 | ne->vendor_name_kv = vendor_name_kv; | |
1186 | if (device_create_file(&ne->device, | |
1187 | &dev_attr_ne_vendor_name_kv) != 0) | |
9be51c5d | 1188 | HPSB_ERR("Failed to add sysfs attribute"); |
93245472 | 1189 | } |
1da177e4 LT |
1190 | } |
1191 | ||
1192 | #ifdef CONFIG_HOTPLUG | |
1193 | ||
7eff2e7a | 1194 | static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env) |
1da177e4 LT |
1195 | { |
1196 | struct unit_directory *ud; | |
bf62456e | 1197 | int retval = 0; |
9b19d85a OH |
1198 | /* ieee1394:venNmoNspNverN */ |
1199 | char buf[8 + 1 + 3 + 8 + 2 + 8 + 2 + 8 + 3 + 8 + 1]; | |
1da177e4 | 1200 | |
dd7f2928 | 1201 | if (!dev) |
1da177e4 LT |
1202 | return -ENODEV; |
1203 | ||
dd7f2928 | 1204 | ud = container_of(dev, struct unit_directory, unit_dev); |
1da177e4 LT |
1205 | |
1206 | if (ud->ne->in_limbo || ud->ignore_driver) | |
1207 | return -ENODEV; | |
1208 | ||
1209 | #define PUT_ENVP(fmt,val) \ | |
1210 | do { \ | |
7eff2e7a | 1211 | retval = add_uevent_var(env, fmt, val); \ |
bf62456e ER |
1212 | if (retval) \ |
1213 | return retval; \ | |
1da177e4 LT |
1214 | } while (0) |
1215 | ||
1216 | PUT_ENVP("VENDOR_ID=%06x", ud->vendor_id); | |
1217 | PUT_ENVP("MODEL_ID=%06x", ud->model_id); | |
1218 | PUT_ENVP("GUID=%016Lx", (unsigned long long)ud->ne->guid); | |
1219 | PUT_ENVP("SPECIFIER_ID=%06x", ud->specifier_id); | |
1220 | PUT_ENVP("VERSION=%06x", ud->version); | |
9b19d85a OH |
1221 | snprintf(buf, sizeof(buf), "ieee1394:ven%08Xmo%08Xsp%08Xver%08X", |
1222 | ud->vendor_id, | |
1223 | ud->model_id, | |
1224 | ud->specifier_id, | |
1225 | ud->version); | |
1226 | PUT_ENVP("MODALIAS=%s", buf); | |
1da177e4 LT |
1227 | |
1228 | #undef PUT_ENVP | |
1229 | ||
1da177e4 LT |
1230 | return 0; |
1231 | } | |
1232 | ||
1233 | #else | |
1234 | ||
7eff2e7a | 1235 | static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env) |
1da177e4 LT |
1236 | { |
1237 | return -ENODEV; | |
1238 | } | |
1239 | ||
1240 | #endif /* CONFIG_HOTPLUG */ | |
1241 | ||
1242 | ||
ed30c26e BC |
1243 | int __hpsb_register_protocol(struct hpsb_protocol_driver *drv, |
1244 | struct module *owner) | |
1da177e4 | 1245 | { |
ed30c26e BC |
1246 | int error; |
1247 | ||
1248 | drv->driver.bus = &ieee1394_bus_type; | |
1249 | drv->driver.owner = owner; | |
1250 | drv->driver.name = drv->name; | |
1251 | ||
1da177e4 | 1252 | /* This will cause a probe for devices */ |
ed30c26e | 1253 | error = driver_register(&drv->driver); |
7fdfc909 | 1254 | if (!error) |
ed30c26e | 1255 | nodemgr_create_drv_files(drv); |
7fdfc909 | 1256 | return error; |
1da177e4 LT |
1257 | } |
1258 | ||
1259 | void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver) | |
1260 | { | |
1261 | nodemgr_remove_drv_files(driver); | |
1262 | /* This will subsequently disconnect all devices that our driver | |
1263 | * is attached to. */ | |
1264 | driver_unregister(&driver->driver); | |
1265 | } | |
1266 | ||
1267 | ||
1268 | /* | |
1269 | * This function updates nodes that were present on the bus before the | |
1270 | * reset and still are after the reset. The nodeid and the config rom | |
1271 | * may have changed, and the drivers managing this device must be | |
1272 | * informed that this device just went through a bus reset, to allow | |
1273 | * the to take whatever actions required. | |
1274 | */ | |
1275 | static void nodemgr_update_node(struct node_entry *ne, struct csr1212_csr *csr, | |
1276 | struct host_info *hi, nodeid_t nodeid, | |
1277 | unsigned int generation) | |
1278 | { | |
1279 | if (ne->nodeid != nodeid) { | |
1280 | HPSB_DEBUG("Node changed: " NODE_BUS_FMT " -> " NODE_BUS_FMT, | |
1281 | NODE_BUS_ARGS(ne->host, ne->nodeid), | |
1282 | NODE_BUS_ARGS(ne->host, nodeid)); | |
1283 | ne->nodeid = nodeid; | |
1284 | } | |
1285 | ||
1286 | if (ne->busopt.generation != ((be32_to_cpu(csr->bus_info_data[2]) >> 4) & 0xf)) { | |
1287 | kfree(ne->csr->private); | |
1288 | csr1212_destroy_csr(ne->csr); | |
1289 | ne->csr = csr; | |
1290 | ||
1291 | /* If the node's configrom generation has changed, we | |
1292 | * unregister all the unit directories. */ | |
1293 | nodemgr_remove_uds(ne); | |
1294 | ||
1295 | nodemgr_update_bus_options(ne); | |
1296 | ||
1297 | /* Mark the node as new, so it gets re-probed */ | |
6848408a | 1298 | ne->needs_probe = true; |
1da177e4 LT |
1299 | } else { |
1300 | /* old cache is valid, so update its generation */ | |
1301 | struct nodemgr_csr_info *ci = ne->csr->private; | |
1302 | ci->generation = generation; | |
1303 | /* free the partially filled now unneeded new cache */ | |
1304 | kfree(csr->private); | |
1305 | csr1212_destroy_csr(csr); | |
1306 | } | |
1307 | ||
1308 | if (ne->in_limbo) | |
1309 | nodemgr_resume_ne(ne); | |
1310 | ||
1311 | /* Mark the node current */ | |
1312 | ne->generation = generation; | |
1313 | } | |
1314 | ||
1315 | ||
1316 | ||
1317 | static void nodemgr_node_scan_one(struct host_info *hi, | |
1318 | nodeid_t nodeid, int generation) | |
1319 | { | |
1320 | struct hpsb_host *host = hi->host; | |
1321 | struct node_entry *ne; | |
1322 | octlet_t guid; | |
1323 | struct csr1212_csr *csr; | |
1324 | struct nodemgr_csr_info *ci; | |
d7530a1e | 1325 | u8 *speed; |
1da177e4 | 1326 | |
8551158a | 1327 | ci = kmalloc(sizeof(*ci), GFP_KERNEL); |
1da177e4 LT |
1328 | if (!ci) |
1329 | return; | |
1330 | ||
1331 | ci->host = host; | |
1332 | ci->nodeid = nodeid; | |
1333 | ci->generation = generation; | |
d7530a1e SR |
1334 | |
1335 | /* Prepare for speed probe which occurs when reading the ROM */ | |
1336 | speed = &(host->speed[NODEID_TO_NODE(nodeid)]); | |
1337 | if (*speed > host->csr.lnk_spd) | |
1338 | *speed = host->csr.lnk_spd; | |
1339 | ci->speed_unverified = *speed > IEEE1394_SPEED_100; | |
1da177e4 LT |
1340 | |
1341 | /* We need to detect when the ConfigROM's generation has changed, | |
1342 | * so we only update the node's info when it needs to be. */ | |
1343 | ||
1344 | csr = csr1212_create_csr(&nodemgr_csr_ops, 5 * sizeof(quadlet_t), ci); | |
1345 | if (!csr || csr1212_parse_csr(csr) != CSR1212_SUCCESS) { | |
1346 | HPSB_ERR("Error parsing configrom for node " NODE_BUS_FMT, | |
1347 | NODE_BUS_ARGS(host, nodeid)); | |
1348 | if (csr) | |
1349 | csr1212_destroy_csr(csr); | |
1350 | kfree(ci); | |
1351 | return; | |
1352 | } | |
1353 | ||
1354 | if (csr->bus_info_data[1] != IEEE1394_BUSID_MAGIC) { | |
1355 | /* This isn't a 1394 device, but we let it slide. There | |
1356 | * was a report of a device with broken firmware which | |
1357 | * reported '2394' instead of '1394', which is obviously a | |
1358 | * mistake. One would hope that a non-1394 device never | |
1359 | * gets connected to Firewire bus. If someone does, we | |
1360 | * shouldn't be held responsible, so we'll allow it with a | |
1361 | * warning. */ | |
1362 | HPSB_WARN("Node " NODE_BUS_FMT " has invalid busID magic [0x%08x]", | |
1363 | NODE_BUS_ARGS(host, nodeid), csr->bus_info_data[1]); | |
1364 | } | |
1365 | ||
1366 | guid = ((u64)be32_to_cpu(csr->bus_info_data[3]) << 32) | be32_to_cpu(csr->bus_info_data[4]); | |
1367 | ne = find_entry_by_guid(guid); | |
1368 | ||
1369 | if (ne && ne->host != host && ne->in_limbo) { | |
1370 | /* Must have moved this device from one host to another */ | |
1371 | nodemgr_remove_ne(ne); | |
1372 | ne = NULL; | |
1373 | } | |
1374 | ||
1375 | if (!ne) | |
1376 | nodemgr_create_node(guid, csr, hi, nodeid, generation); | |
1377 | else | |
1378 | nodemgr_update_node(ne, csr, hi, nodeid, generation); | |
1da177e4 LT |
1379 | } |
1380 | ||
1381 | ||
1382 | static void nodemgr_node_scan(struct host_info *hi, int generation) | |
1383 | { | |
d41bba2d SR |
1384 | int count; |
1385 | struct hpsb_host *host = hi->host; | |
1386 | struct selfid *sid = (struct selfid *)host->topology_map; | |
1387 | nodeid_t nodeid = LOCAL_BUS; | |
1da177e4 | 1388 | |
d41bba2d SR |
1389 | /* Scan each node on the bus */ |
1390 | for (count = host->selfid_count; count; count--, sid++) { | |
1391 | if (sid->extended) | |
1392 | continue; | |
1da177e4 | 1393 | |
d41bba2d SR |
1394 | if (!sid->link_active) { |
1395 | nodeid++; | |
1396 | continue; | |
1397 | } | |
1398 | nodemgr_node_scan_one(hi, nodeid++, generation); | |
1399 | } | |
1da177e4 LT |
1400 | } |
1401 | ||
73cf6023 | 1402 | static int __nodemgr_driver_suspend(struct device *dev, void *data) |
1da177e4 | 1403 | { |
1da177e4 | 1404 | struct unit_directory *ud; |
a0e857ee | 1405 | struct device_driver *drv; |
73cf6023 | 1406 | struct node_entry *ne = (struct node_entry *)data; |
a0e857ee | 1407 | int error; |
1da177e4 | 1408 | |
73cf6023 DY |
1409 | ud = container_of(dev, struct unit_directory, unit_dev); |
1410 | if (ud->ne == ne) { | |
1411 | drv = get_driver(ud->device.driver); | |
1412 | if (drv) { | |
1413 | error = 1; /* release if suspend is not implemented */ | |
1414 | if (drv->suspend) { | |
1415 | down(&ud->device.sem); | |
1416 | error = drv->suspend(&ud->device, PMSG_SUSPEND); | |
1417 | up(&ud->device.sem); | |
1418 | } | |
1419 | if (error) | |
1420 | device_release_driver(&ud->device); | |
1421 | put_driver(drv); | |
1422 | } | |
1423 | } | |
1da177e4 | 1424 | |
73cf6023 DY |
1425 | return 0; |
1426 | } | |
1da177e4 | 1427 | |
73cf6023 DY |
1428 | static int __nodemgr_driver_resume(struct device *dev, void *data) |
1429 | { | |
1430 | struct unit_directory *ud; | |
1431 | struct device_driver *drv; | |
1432 | struct node_entry *ne = (struct node_entry *)data; | |
1da177e4 | 1433 | |
73cf6023 DY |
1434 | ud = container_of(dev, struct unit_directory, unit_dev); |
1435 | if (ud->ne == ne) { | |
a0e857ee | 1436 | drv = get_driver(ud->device.driver); |
73cf6023 DY |
1437 | if (drv) { |
1438 | if (drv->resume) { | |
1439 | down(&ud->device.sem); | |
1440 | drv->resume(&ud->device); | |
1441 | up(&ud->device.sem); | |
1442 | } | |
1443 | put_driver(drv); | |
a0e857ee | 1444 | } |
1da177e4 | 1445 | } |
1da177e4 | 1446 | |
73cf6023 DY |
1447 | return 0; |
1448 | } | |
1da177e4 | 1449 | |
73cf6023 | 1450 | static void nodemgr_suspend_ne(struct node_entry *ne) |
1da177e4 | 1451 | { |
73cf6023 DY |
1452 | HPSB_DEBUG("Node suspended: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", |
1453 | NODE_BUS_ARGS(ne->host, ne->nodeid), | |
1454 | (unsigned long long)ne->guid); | |
1da177e4 | 1455 | |
73cf6023 DY |
1456 | ne->in_limbo = 1; |
1457 | WARN_ON(device_create_file(&ne->device, &dev_attr_ne_in_limbo)); | |
1da177e4 | 1458 | |
93562b53 GKH |
1459 | class_for_each_device(&nodemgr_ud_class, NULL, ne, |
1460 | __nodemgr_driver_suspend); | |
73cf6023 | 1461 | } |
1da177e4 | 1462 | |
a0e857ee | 1463 | |
73cf6023 DY |
1464 | static void nodemgr_resume_ne(struct node_entry *ne) |
1465 | { | |
1466 | ne->in_limbo = 0; | |
1467 | device_remove_file(&ne->device, &dev_attr_ne_in_limbo); | |
1da177e4 | 1468 | |
93562b53 GKH |
1469 | class_for_each_device(&nodemgr_ud_class, NULL, ne, |
1470 | __nodemgr_driver_resume); | |
1da177e4 LT |
1471 | HPSB_DEBUG("Node resumed: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", |
1472 | NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid); | |
1473 | } | |
1474 | ||
73cf6023 | 1475 | static int __nodemgr_update_pdrv(struct device *dev, void *data) |
1da177e4 LT |
1476 | { |
1477 | struct unit_directory *ud; | |
a0e857ee | 1478 | struct device_driver *drv; |
1da177e4 | 1479 | struct hpsb_protocol_driver *pdrv; |
73cf6023 | 1480 | struct node_entry *ne = (struct node_entry *)data; |
a0e857ee | 1481 | int error; |
1da177e4 | 1482 | |
73cf6023 DY |
1483 | ud = container_of(dev, struct unit_directory, unit_dev); |
1484 | if (ud->ne == ne) { | |
a0e857ee | 1485 | drv = get_driver(ud->device.driver); |
73cf6023 DY |
1486 | if (drv) { |
1487 | error = 0; | |
1488 | pdrv = container_of(drv, struct hpsb_protocol_driver, | |
1489 | driver); | |
1490 | if (pdrv->update) { | |
1491 | down(&ud->device.sem); | |
1492 | error = pdrv->update(ud); | |
1493 | up(&ud->device.sem); | |
1494 | } | |
1495 | if (error) | |
1496 | device_release_driver(&ud->device); | |
1497 | put_driver(drv); | |
1da177e4 LT |
1498 | } |
1499 | } | |
73cf6023 DY |
1500 | |
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | static void nodemgr_update_pdrv(struct node_entry *ne) | |
1505 | { | |
93562b53 GKH |
1506 | class_for_each_device(&nodemgr_ud_class, NULL, ne, |
1507 | __nodemgr_update_pdrv); | |
1da177e4 LT |
1508 | } |
1509 | ||
1510 | ||
61c7f775 SR |
1511 | /* Write the BROADCAST_CHANNEL as per IEEE1394a 8.3.2.3.11 and 8.4.2.3. This |
1512 | * seems like an optional service but in the end it is practically mandatory | |
1513 | * as a consequence of these clauses. | |
1514 | * | |
1515 | * Note that we cannot do a broadcast write to all nodes at once because some | |
1516 | * pre-1394a devices would hang. */ | |
1517 | static void nodemgr_irm_write_bc(struct node_entry *ne, int generation) | |
1518 | { | |
1519 | const u64 bc_addr = (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL); | |
1520 | quadlet_t bc_remote, bc_local; | |
7fdfc909 | 1521 | int error; |
61c7f775 SR |
1522 | |
1523 | if (!ne->host->is_irm || ne->generation != generation || | |
1524 | ne->nodeid == ne->host->node_id) | |
1525 | return; | |
1526 | ||
1527 | bc_local = cpu_to_be32(ne->host->csr.broadcast_channel); | |
1528 | ||
1529 | /* Check if the register is implemented and 1394a compliant. */ | |
7fdfc909 SR |
1530 | error = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote, |
1531 | sizeof(bc_remote)); | |
1532 | if (!error && bc_remote & cpu_to_be32(0x80000000) && | |
61c7f775 SR |
1533 | bc_remote != bc_local) |
1534 | hpsb_node_write(ne, bc_addr, &bc_local, sizeof(bc_local)); | |
1535 | } | |
1536 | ||
1537 | ||
1da177e4 LT |
1538 | static void nodemgr_probe_ne(struct host_info *hi, struct node_entry *ne, int generation) |
1539 | { | |
1540 | struct device *dev; | |
1541 | ||
1542 | if (ne->host != hi->host || ne->in_limbo) | |
1543 | return; | |
1544 | ||
1545 | dev = get_device(&ne->device); | |
1546 | if (!dev) | |
1547 | return; | |
1548 | ||
61c7f775 SR |
1549 | nodemgr_irm_write_bc(ne, generation); |
1550 | ||
1da177e4 LT |
1551 | /* If "needs_probe", then this is either a new or changed node we |
1552 | * rescan totally. If the generation matches for an existing node | |
1553 | * (one that existed prior to the bus reset) we send update calls | |
1554 | * down to the drivers. Otherwise, this is a dead node and we | |
1555 | * suspend it. */ | |
1556 | if (ne->needs_probe) | |
1557 | nodemgr_process_root_directory(hi, ne); | |
1558 | else if (ne->generation == generation) | |
1559 | nodemgr_update_pdrv(ne); | |
1560 | else | |
1561 | nodemgr_suspend_ne(ne); | |
1562 | ||
1563 | put_device(dev); | |
1564 | } | |
1565 | ||
73cf6023 DY |
1566 | struct probe_param { |
1567 | struct host_info *hi; | |
1568 | int generation; | |
6848408a | 1569 | bool probe_now; |
73cf6023 DY |
1570 | }; |
1571 | ||
6848408a | 1572 | static int node_probe(struct device *dev, void *data) |
73cf6023 | 1573 | { |
6848408a | 1574 | struct probe_param *p = data; |
73cf6023 DY |
1575 | struct node_entry *ne; |
1576 | ||
c921a974 SR |
1577 | if (p->generation != get_hpsb_generation(p->hi->host)) |
1578 | return -EAGAIN; | |
1579 | ||
73cf6023 | 1580 | ne = container_of(dev, struct node_entry, node_dev); |
6848408a SR |
1581 | if (ne->needs_probe == p->probe_now) |
1582 | nodemgr_probe_ne(p->hi, ne, p->generation); | |
73cf6023 DY |
1583 | return 0; |
1584 | } | |
1da177e4 LT |
1585 | |
1586 | static void nodemgr_node_probe(struct host_info *hi, int generation) | |
1587 | { | |
6848408a | 1588 | struct probe_param p; |
1da177e4 | 1589 | |
6848408a SR |
1590 | p.hi = hi; |
1591 | p.generation = generation; | |
c921a974 SR |
1592 | /* |
1593 | * Do some processing of the nodes we've probed. This pulls them | |
1da177e4 LT |
1594 | * into the sysfs layer if needed, and can result in processing of |
1595 | * unit-directories, or just updating the node and it's | |
51c1d80e SR |
1596 | * unit-directories. |
1597 | * | |
1598 | * Run updates before probes. Usually, updates are time-critical | |
c921a974 SR |
1599 | * while probes are time-consuming. |
1600 | * | |
1601 | * Meanwhile, another bus reset may have happened. In this case we | |
1602 | * skip everything here and let the next bus scan handle it. | |
1603 | * Otherwise we may prematurely remove nodes which are still there. | |
1604 | */ | |
6848408a | 1605 | p.probe_now = false; |
c921a974 SR |
1606 | if (class_for_each_device(&nodemgr_ne_class, NULL, &p, node_probe) != 0) |
1607 | return; | |
1da177e4 | 1608 | |
c921a974 SR |
1609 | p.probe_now = true; |
1610 | if (class_for_each_device(&nodemgr_ne_class, NULL, &p, node_probe) != 0) | |
1611 | return; | |
1612 | /* | |
1da177e4 LT |
1613 | * Now let's tell the bus to rescan our devices. This may seem |
1614 | * like overhead, but the driver-model core will only scan a | |
1615 | * device for a driver when either the device is added, or when a | |
1616 | * new driver is added. A bus reset is a good reason to rescan | |
1617 | * devices that were there before. For example, an sbp2 device | |
1618 | * may become available for login, if the host that held it was | |
c921a974 SR |
1619 | * just removed. |
1620 | */ | |
1621 | if (bus_rescan_devices(&ieee1394_bus_type) != 0) | |
1622 | HPSB_DEBUG("bus_rescan_devices had an error"); | |
1da177e4 LT |
1623 | } |
1624 | ||
14c0fa24 SR |
1625 | static int nodemgr_send_resume_packet(struct hpsb_host *host) |
1626 | { | |
1627 | struct hpsb_packet *packet; | |
7fdfc909 | 1628 | int error = -ENOMEM; |
14c0fa24 SR |
1629 | |
1630 | packet = hpsb_make_phypacket(host, | |
d7758461 SR |
1631 | EXTPHYPACKET_TYPE_RESUME | |
1632 | NODEID_TO_NODE(host->node_id) << PHYPACKET_PORT_SHIFT); | |
14c0fa24 SR |
1633 | if (packet) { |
1634 | packet->no_waiter = 1; | |
1635 | packet->generation = get_hpsb_generation(host); | |
7fdfc909 | 1636 | error = hpsb_send_packet(packet); |
14c0fa24 | 1637 | } |
7fdfc909 | 1638 | if (error) |
14c0fa24 SR |
1639 | HPSB_WARN("fw-host%d: Failed to broadcast resume packet", |
1640 | host->id); | |
7fdfc909 | 1641 | return error; |
14c0fa24 SR |
1642 | } |
1643 | ||
61c7f775 | 1644 | /* Perform a few high-level IRM responsibilities. */ |
1da177e4 LT |
1645 | static int nodemgr_do_irm_duties(struct hpsb_host *host, int cycles) |
1646 | { | |
1647 | quadlet_t bc; | |
1648 | ||
1649 | /* if irm_id == -1 then there is no IRM on this bus */ | |
1650 | if (!host->is_irm || host->irm_id == (nodeid_t)-1) | |
1651 | return 1; | |
1652 | ||
61c7f775 SR |
1653 | /* We are a 1394a-2000 compliant IRM. Set the validity bit. */ |
1654 | host->csr.broadcast_channel |= 0x40000000; | |
1da177e4 LT |
1655 | |
1656 | /* If there is no bus manager then we should set the root node's | |
1657 | * force_root bit to promote bus stability per the 1394 | |
1658 | * spec. (8.4.2.6) */ | |
1659 | if (host->busmgr_id == 0xffff && host->node_count > 1) | |
1660 | { | |
1661 | u16 root_node = host->node_count - 1; | |
1da177e4 | 1662 | |
328699bf JM |
1663 | /* get cycle master capability flag from root node */ |
1664 | if (host->is_cycmst || | |
1665 | (!hpsb_read(host, LOCAL_BUS | root_node, get_hpsb_generation(host), | |
1666 | (CSR_REGISTER_BASE + CSR_CONFIG_ROM + 2 * sizeof(quadlet_t)), | |
1667 | &bc, sizeof(quadlet_t)) && | |
1668 | be32_to_cpu(bc) & 1 << CSR_CMC_SHIFT)) | |
1da177e4 LT |
1669 | hpsb_send_phy_config(host, root_node, -1); |
1670 | else { | |
1671 | HPSB_DEBUG("The root node is not cycle master capable; " | |
1672 | "selecting a new root node and resetting..."); | |
1673 | ||
1674 | if (cycles >= 5) { | |
1675 | /* Oh screw it! Just leave the bus as it is */ | |
1676 | HPSB_DEBUG("Stopping reset loop for IRM sanity"); | |
1677 | return 1; | |
1678 | } | |
1679 | ||
1680 | hpsb_send_phy_config(host, NODEID_TO_NODE(host->node_id), -1); | |
1681 | hpsb_reset_bus(host, LONG_RESET_FORCE_ROOT); | |
1682 | ||
1683 | return 0; | |
1684 | } | |
1685 | } | |
1686 | ||
14c0fa24 SR |
1687 | /* Some devices suspend their ports while being connected to an inactive |
1688 | * host adapter, i.e. if connected before the low-level driver is | |
1689 | * loaded. They become visible either when physically unplugged and | |
1690 | * replugged, or when receiving a resume packet. Send one once. */ | |
1691 | if (!host->resume_packet_sent && !nodemgr_send_resume_packet(host)) | |
1692 | host->resume_packet_sent = 1; | |
1693 | ||
1da177e4 LT |
1694 | return 1; |
1695 | } | |
1696 | ||
1697 | /* We need to ensure that if we are not the IRM, that the IRM node is capable of | |
1698 | * everything we can do, otherwise issue a bus reset and try to become the IRM | |
1699 | * ourselves. */ | |
1700 | static int nodemgr_check_irm_capability(struct hpsb_host *host, int cycles) | |
1701 | { | |
1702 | quadlet_t bc; | |
1703 | int status; | |
1704 | ||
1705 | if (hpsb_disable_irm || host->is_irm) | |
1706 | return 1; | |
1707 | ||
1708 | status = hpsb_read(host, LOCAL_BUS | (host->irm_id), | |
1709 | get_hpsb_generation(host), | |
1710 | (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL), | |
1711 | &bc, sizeof(quadlet_t)); | |
1712 | ||
1713 | if (status < 0 || !(be32_to_cpu(bc) & 0x80000000)) { | |
1714 | /* The current irm node does not have a valid BROADCAST_CHANNEL | |
1715 | * register and we do, so reset the bus with force_root set */ | |
1716 | HPSB_DEBUG("Current remote IRM is not 1394a-2000 compliant, resetting..."); | |
1717 | ||
1718 | if (cycles >= 5) { | |
1719 | /* Oh screw it! Just leave the bus as it is */ | |
1720 | HPSB_DEBUG("Stopping reset loop for IRM sanity"); | |
1721 | return 1; | |
1722 | } | |
1723 | ||
1724 | hpsb_send_phy_config(host, NODEID_TO_NODE(host->node_id), -1); | |
1725 | hpsb_reset_bus(host, LONG_RESET_FORCE_ROOT); | |
1726 | ||
1727 | return 0; | |
1728 | } | |
1729 | ||
1730 | return 1; | |
1731 | } | |
1732 | ||
1733 | static int nodemgr_host_thread(void *__hi) | |
1734 | { | |
1735 | struct host_info *hi = (struct host_info *)__hi; | |
1736 | struct hpsb_host *host = hi->host; | |
b7a7179d | 1737 | unsigned int g, generation = 0; |
d2f119fe | 1738 | int i, reset_cycles = 0; |
1da177e4 | 1739 | |
83144186 | 1740 | set_freezable(); |
1da177e4 LT |
1741 | /* Setup our device-model entries */ |
1742 | nodemgr_create_host_dev_files(host); | |
1743 | ||
d2f119fe SR |
1744 | for (;;) { |
1745 | /* Sleep until next bus reset */ | |
1746 | set_current_state(TASK_INTERRUPTIBLE); | |
a65421ea SR |
1747 | if (get_hpsb_generation(host) == generation && |
1748 | !kthread_should_stop()) | |
d2f119fe SR |
1749 | schedule(); |
1750 | __set_current_state(TASK_RUNNING); | |
1751 | ||
1752 | /* Thread may have been woken up to freeze or to exit */ | |
1753 | if (try_to_freeze()) | |
1754 | continue; | |
1755 | if (kthread_should_stop()) | |
1756 | goto exit; | |
1da177e4 | 1757 | |
1da177e4 LT |
1758 | /* Pause for 1/4 second in 1/16 second intervals, |
1759 | * to make sure things settle down. */ | |
d2f119fe | 1760 | g = get_hpsb_generation(host); |
1da177e4 | 1761 | for (i = 0; i < 4 ; i++) { |
69e2b602 SS |
1762 | msleep_interruptible(63); |
1763 | if (kthread_should_stop()) | |
a0e857ee | 1764 | goto exit; |
1da177e4 LT |
1765 | |
1766 | /* Now get the generation in which the node ID's we collect | |
1767 | * are valid. During the bus scan we will use this generation | |
1768 | * for the read transactions, so that if another reset occurs | |
1769 | * during the scan the transactions will fail instead of | |
1770 | * returning bogus data. */ | |
1771 | generation = get_hpsb_generation(host); | |
1772 | ||
1773 | /* If we get a reset before we are done waiting, then | |
59c51591 | 1774 | * start the waiting over again */ |
d2f119fe SR |
1775 | if (generation != g) |
1776 | g = generation, i = 0; | |
1da177e4 LT |
1777 | } |
1778 | ||
328699bf JM |
1779 | if (!nodemgr_check_irm_capability(host, reset_cycles) || |
1780 | !nodemgr_do_irm_duties(host, reset_cycles)) { | |
1da177e4 | 1781 | reset_cycles++; |
1da177e4 LT |
1782 | continue; |
1783 | } | |
328699bf | 1784 | reset_cycles = 0; |
1da177e4 LT |
1785 | |
1786 | /* Scan our nodes to get the bus options and create node | |
1787 | * entries. This does not do the sysfs stuff, since that | |
312c004d KS |
1788 | * would trigger uevents and such, which is a bad idea at |
1789 | * this point. */ | |
1da177e4 | 1790 | nodemgr_node_scan(hi, generation); |
1da177e4 LT |
1791 | |
1792 | /* This actually does the full probe, with sysfs | |
1793 | * registration. */ | |
1794 | nodemgr_node_probe(hi, generation); | |
1795 | ||
1796 | /* Update some of our sysfs symlinks */ | |
1797 | nodemgr_update_host_dev_links(host); | |
1da177e4 | 1798 | } |
d2f119fe | 1799 | exit: |
1da177e4 | 1800 | HPSB_VERBOSE("NodeMgr: Exiting thread"); |
d2f119fe | 1801 | return 0; |
1da177e4 LT |
1802 | } |
1803 | ||
73cf6023 DY |
1804 | struct host_iter_param { |
1805 | void *data; | |
1806 | int (*cb)(struct hpsb_host *, void *); | |
1807 | }; | |
1808 | ||
1809 | static int __nodemgr_for_each_host(struct device *dev, void *data) | |
1810 | { | |
1811 | struct hpsb_host *host; | |
1812 | struct host_iter_param *hip = (struct host_iter_param *)data; | |
1813 | int error = 0; | |
1814 | ||
1815 | host = container_of(dev, struct hpsb_host, host_dev); | |
1816 | error = hip->cb(host, hip->data); | |
1817 | ||
1818 | return error; | |
1819 | } | |
afd6546d SR |
1820 | /** |
1821 | * nodemgr_for_each_host - call a function for each IEEE 1394 host | |
1822 | * @data: an address to supply to the callback | |
1823 | * @cb: function to call for each host | |
1824 | * | |
1825 | * Iterate the hosts, calling a given function with supplied data for each host. | |
1826 | * If the callback fails on a host, i.e. if it returns a non-zero value, the | |
1827 | * iteration is stopped. | |
1828 | * | |
1829 | * Return value: 0 on success, non-zero on failure (same as returned by last run | |
1830 | * of the callback). | |
1831 | */ | |
1832 | int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *)) | |
1da177e4 | 1833 | { |
73cf6023 DY |
1834 | struct host_iter_param hip; |
1835 | int error; | |
1da177e4 | 1836 | |
73cf6023 DY |
1837 | hip.cb = cb; |
1838 | hip.data = data; | |
93562b53 | 1839 | error = class_for_each_device(&hpsb_host_class, NULL, &hip, |
73cf6023 | 1840 | __nodemgr_for_each_host); |
1da177e4 LT |
1841 | |
1842 | return error; | |
1843 | } | |
1844 | ||
ef815334 | 1845 | /* The following two convenience functions use a struct node_entry |
1da177e4 LT |
1846 | * for addressing a node on the bus. They are intended for use by any |
1847 | * process context, not just the nodemgr thread, so we need to be a | |
1848 | * little careful when reading out the node ID and generation. The | |
1849 | * thing that can go wrong is that we get the node ID, then a bus | |
1850 | * reset occurs, and then we read the generation. The node ID is | |
1851 | * possibly invalid, but the generation is current, and we end up | |
1852 | * sending a packet to a the wrong node. | |
1853 | * | |
1854 | * The solution is to make sure we read the generation first, so that | |
1855 | * if a reset occurs in the process, we end up with a stale generation | |
1856 | * and the transactions will fail instead of silently using wrong node | |
1857 | * ID's. | |
1858 | */ | |
1859 | ||
afd6546d SR |
1860 | /** |
1861 | * hpsb_node_fill_packet - fill some destination information into a packet | |
1862 | * @ne: destination node | |
1863 | * @packet: packet to fill in | |
1864 | * | |
1865 | * This will fill in the given, pre-initialised hpsb_packet with the current | |
1866 | * information from the node entry (host, node ID, bus generation number). | |
1867 | */ | |
1868 | void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet) | |
1da177e4 | 1869 | { |
afd6546d SR |
1870 | packet->host = ne->host; |
1871 | packet->generation = ne->generation; | |
1da177e4 | 1872 | barrier(); |
afd6546d | 1873 | packet->node_id = ne->nodeid; |
1da177e4 LT |
1874 | } |
1875 | ||
1876 | int hpsb_node_write(struct node_entry *ne, u64 addr, | |
1877 | quadlet_t *buffer, size_t length) | |
1878 | { | |
1879 | unsigned int generation = ne->generation; | |
1880 | ||
1881 | barrier(); | |
1882 | return hpsb_write(ne->host, ne->nodeid, generation, | |
1883 | addr, buffer, length); | |
1884 | } | |
1885 | ||
1886 | static void nodemgr_add_host(struct hpsb_host *host) | |
1887 | { | |
1888 | struct host_info *hi; | |
1889 | ||
1890 | hi = hpsb_create_hostinfo(&nodemgr_highlevel, host, sizeof(*hi)); | |
1da177e4 | 1891 | if (!hi) { |
d2f119fe | 1892 | HPSB_ERR("NodeMgr: out of memory in add host"); |
1da177e4 LT |
1893 | return; |
1894 | } | |
1da177e4 | 1895 | hi->host = host; |
d2f119fe SR |
1896 | hi->thread = kthread_run(nodemgr_host_thread, hi, "knodemgrd_%d", |
1897 | host->id); | |
1898 | if (IS_ERR(hi->thread)) { | |
1899 | HPSB_ERR("NodeMgr: cannot start thread for host %d", host->id); | |
1da177e4 | 1900 | hpsb_destroy_hostinfo(&nodemgr_highlevel, host); |
1da177e4 | 1901 | } |
1da177e4 LT |
1902 | } |
1903 | ||
1904 | static void nodemgr_host_reset(struct hpsb_host *host) | |
1905 | { | |
1906 | struct host_info *hi = hpsb_get_hostinfo(&nodemgr_highlevel, host); | |
1907 | ||
d2f119fe SR |
1908 | if (hi) { |
1909 | HPSB_VERBOSE("NodeMgr: Processing reset for host %d", host->id); | |
1910 | wake_up_process(hi->thread); | |
1911 | } | |
1da177e4 LT |
1912 | } |
1913 | ||
1914 | static void nodemgr_remove_host(struct hpsb_host *host) | |
1915 | { | |
1916 | struct host_info *hi = hpsb_get_hostinfo(&nodemgr_highlevel, host); | |
1917 | ||
1918 | if (hi) { | |
d2f119fe SR |
1919 | kthread_stop(hi->thread); |
1920 | nodemgr_remove_host_dev(&host->device); | |
1921 | } | |
1da177e4 LT |
1922 | } |
1923 | ||
1924 | static struct hpsb_highlevel nodemgr_highlevel = { | |
1925 | .name = "Node manager", | |
1926 | .add_host = nodemgr_add_host, | |
1927 | .host_reset = nodemgr_host_reset, | |
1928 | .remove_host = nodemgr_remove_host, | |
1929 | }; | |
1930 | ||
1931 | int init_ieee1394_nodemgr(void) | |
1932 | { | |
7fdfc909 | 1933 | int error; |
1da177e4 | 1934 | |
7fdfc909 SR |
1935 | error = class_register(&nodemgr_ne_class); |
1936 | if (error) | |
91efa462 | 1937 | goto fail_ne; |
7fdfc909 | 1938 | error = class_register(&nodemgr_ud_class); |
91efa462 SR |
1939 | if (error) |
1940 | goto fail_ud; | |
8252bbb1 | 1941 | error = driver_register(&nodemgr_mid_layer_driver); |
91efa462 SR |
1942 | if (error) |
1943 | goto fail_ml; | |
1944 | /* This driver is not used if nodemgr is off (disable_nodemgr=1). */ | |
1945 | nodemgr_dev_template_host.driver = &nodemgr_mid_layer_driver; | |
1946 | ||
1da177e4 | 1947 | hpsb_register_highlevel(&nodemgr_highlevel); |
1da177e4 | 1948 | return 0; |
91efa462 SR |
1949 | |
1950 | fail_ml: | |
1951 | class_unregister(&nodemgr_ud_class); | |
1952 | fail_ud: | |
1953 | class_unregister(&nodemgr_ne_class); | |
1954 | fail_ne: | |
1955 | return error; | |
1da177e4 LT |
1956 | } |
1957 | ||
1958 | void cleanup_ieee1394_nodemgr(void) | |
1959 | { | |
d41bba2d | 1960 | hpsb_unregister_highlevel(&nodemgr_highlevel); |
91efa462 | 1961 | driver_unregister(&nodemgr_mid_layer_driver); |
1da177e4 LT |
1962 | class_unregister(&nodemgr_ud_class); |
1963 | class_unregister(&nodemgr_ne_class); | |
1964 | } |