Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 11 | #include <linux/kernel.h> |
| 12 | #include <linux/config.h> |
| 13 | #include <linux/list.h> |
| 14 | #include <linux/slab.h> |
| 15 | #include <linux/smp_lock.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/kmod.h> |
| 18 | #include <linux/completion.h> |
| 19 | #include <linux/delay.h> |
| 20 | #include <linux/pci.h> |
| 21 | #include <linux/moduleparam.h> |
| 22 | #include <asm/atomic.h> |
| 23 | |
| 24 | #include "ieee1394_types.h" |
| 25 | #include "ieee1394.h" |
| 26 | #include "ieee1394_core.h" |
| 27 | #include "hosts.h" |
| 28 | #include "ieee1394_transactions.h" |
| 29 | #include "highlevel.h" |
| 30 | #include "csr.h" |
| 31 | #include "nodemgr.h" |
| 32 | |
Ben Collins | 1934b8b | 2005-07-09 20:01:23 -0400 | [diff] [blame] | 33 | static int ignore_drivers; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | module_param(ignore_drivers, int, 0444); |
| 35 | MODULE_PARM_DESC(ignore_drivers, "Disable automatic probing for drivers."); |
| 36 | |
| 37 | struct nodemgr_csr_info { |
| 38 | struct hpsb_host *host; |
| 39 | nodeid_t nodeid; |
| 40 | unsigned int generation; |
Ben Collins | 647dcb5 | 2006-06-12 18:12:37 -0400 | [diff] [blame] | 41 | unsigned int speed_unverified:1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | }; |
| 43 | |
| 44 | |
| 45 | static char *nodemgr_find_oui_name(int oui) |
| 46 | { |
| 47 | #ifdef CONFIG_IEEE1394_OUI_DB |
| 48 | extern struct oui_list_struct { |
| 49 | int oui; |
| 50 | char *name; |
| 51 | } oui_list[]; |
| 52 | int i; |
| 53 | |
| 54 | for (i = 0; oui_list[i].name; i++) |
| 55 | if (oui_list[i].oui == oui) |
| 56 | return oui_list[i].name; |
| 57 | #endif |
| 58 | return NULL; |
| 59 | } |
| 60 | |
Ben Collins | 647dcb5 | 2006-06-12 18:12:37 -0400 | [diff] [blame] | 61 | /* |
| 62 | * Correct the speed map entry. This is necessary |
| 63 | * - for nodes with link speed < phy speed, |
| 64 | * - for 1394b nodes with negotiated phy port speed < IEEE1394_SPEED_MAX. |
| 65 | * A possible speed is determined by trial and error, using quadlet reads. |
| 66 | */ |
| 67 | static int nodemgr_check_speed(struct nodemgr_csr_info *ci, u64 addr, |
| 68 | quadlet_t *buffer) |
| 69 | { |
| 70 | quadlet_t q; |
| 71 | u8 i, *speed, old_speed, good_speed; |
| 72 | int ret; |
| 73 | |
| 74 | speed = ci->host->speed + NODEID_TO_NODE(ci->nodeid); |
| 75 | old_speed = *speed; |
| 76 | good_speed = IEEE1394_SPEED_MAX + 1; |
| 77 | |
| 78 | /* Try every speed from S100 to old_speed. |
| 79 | * If we did it the other way around, a too low speed could be caught |
| 80 | * if the retry succeeded for some other reason, e.g. because the link |
| 81 | * just finished its initialization. */ |
| 82 | for (i = IEEE1394_SPEED_100; i <= old_speed; i++) { |
| 83 | *speed = i; |
| 84 | ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr, |
| 85 | &q, sizeof(quadlet_t)); |
| 86 | if (ret) |
| 87 | break; |
| 88 | *buffer = q; |
| 89 | good_speed = i; |
| 90 | } |
| 91 | if (good_speed <= IEEE1394_SPEED_MAX) { |
| 92 | HPSB_DEBUG("Speed probe of node " NODE_BUS_FMT " yields %s", |
| 93 | NODE_BUS_ARGS(ci->host, ci->nodeid), |
| 94 | hpsb_speedto_str[good_speed]); |
| 95 | *speed = good_speed; |
| 96 | ci->speed_unverified = 0; |
| 97 | return 0; |
| 98 | } |
| 99 | *speed = old_speed; |
| 100 | return ret; |
| 101 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | static int nodemgr_bus_read(struct csr1212_csr *csr, u64 addr, u16 length, |
| 104 | void *buffer, void *__ci) |
| 105 | { |
| 106 | struct nodemgr_csr_info *ci = (struct nodemgr_csr_info*)__ci; |
Ben Collins | 647dcb5 | 2006-06-12 18:12:37 -0400 | [diff] [blame] | 107 | int i, ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | |
Jody McIntyre | e31a127 | 2005-09-30 11:59:09 -0700 | [diff] [blame] | 109 | for (i = 1; ; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | ret = hpsb_read(ci->host, ci->nodeid, ci->generation, addr, |
| 111 | buffer, length); |
Ben Collins | 647dcb5 | 2006-06-12 18:12:37 -0400 | [diff] [blame] | 112 | if (!ret) { |
| 113 | ci->speed_unverified = 0; |
| 114 | break; |
| 115 | } |
| 116 | /* Give up after 3rd failure. */ |
| 117 | if (i == 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | break; |
| 119 | |
Ben Collins | 647dcb5 | 2006-06-12 18:12:37 -0400 | [diff] [blame] | 120 | /* The ieee1394_core guessed the node's speed capability from |
| 121 | * the self ID. Check whether a lower speed works. */ |
| 122 | if (ci->speed_unverified && length == sizeof(quadlet_t)) { |
| 123 | ret = nodemgr_check_speed(ci, addr, buffer); |
| 124 | if (!ret) |
| 125 | break; |
| 126 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | if (msleep_interruptible(334)) |
| 128 | return -EINTR; |
| 129 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | return ret; |
| 131 | } |
| 132 | |
| 133 | static int nodemgr_get_max_rom(quadlet_t *bus_info_data, void *__ci) |
| 134 | { |
| 135 | return (CSR1212_BE32_TO_CPU(bus_info_data[2]) >> 8) & 0x3; |
| 136 | } |
| 137 | |
| 138 | static struct csr1212_bus_ops nodemgr_csr_ops = { |
| 139 | .bus_read = nodemgr_bus_read, |
| 140 | .get_max_rom = nodemgr_get_max_rom |
| 141 | }; |
| 142 | |
| 143 | |
| 144 | /* |
| 145 | * Basically what we do here is start off retrieving the bus_info block. |
| 146 | * From there will fill in some info about the node, verify it is of IEEE |
| 147 | * 1394 type, and that the crc checks out ok. After that we start off with |
| 148 | * the root directory, and subdirectories. To do this, we retrieve the |
| 149 | * quadlet header for a directory, find out the length, and retrieve the |
| 150 | * complete directory entry (be it a leaf or a directory). We then process |
| 151 | * it and add the info to our structure for that particular node. |
| 152 | * |
| 153 | * We verify CRC's along the way for each directory/block/leaf. The entire |
| 154 | * node structure is generic, and simply stores the information in a way |
| 155 | * that's easy to parse by the protocol interface. |
| 156 | */ |
| 157 | |
| 158 | /* |
| 159 | * The nodemgr relies heavily on the Driver Model for device callbacks and |
| 160 | * driver/device mappings. The old nodemgr used to handle all this itself, |
| 161 | * but now we are much simpler because of the LDM. |
| 162 | */ |
| 163 | |
| 164 | static DECLARE_MUTEX(nodemgr_serialize); |
| 165 | |
| 166 | struct host_info { |
| 167 | struct hpsb_host *host; |
| 168 | struct list_head list; |
| 169 | struct completion exited; |
| 170 | struct semaphore reset_sem; |
| 171 | int pid; |
| 172 | char daemon_name[15]; |
| 173 | int kill_me; |
| 174 | }; |
| 175 | |
| 176 | static int nodemgr_bus_match(struct device * dev, struct device_driver * drv); |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 177 | static int nodemgr_uevent(struct class_device *cdev, char **envp, int num_envp, |
| 178 | char *buffer, int buffer_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | static void nodemgr_resume_ne(struct node_entry *ne); |
| 180 | static void nodemgr_remove_ne(struct node_entry *ne); |
| 181 | static struct node_entry *find_entry_by_guid(u64 guid); |
| 182 | |
| 183 | struct bus_type ieee1394_bus_type = { |
| 184 | .name = "ieee1394", |
| 185 | .match = nodemgr_bus_match, |
| 186 | }; |
| 187 | |
| 188 | static void host_cls_release(struct class_device *class_dev) |
| 189 | { |
| 190 | put_device(&container_of((class_dev), struct hpsb_host, class_dev)->device); |
| 191 | } |
| 192 | |
| 193 | struct class hpsb_host_class = { |
| 194 | .name = "ieee1394_host", |
| 195 | .release = host_cls_release, |
| 196 | }; |
| 197 | |
| 198 | static void ne_cls_release(struct class_device *class_dev) |
| 199 | { |
| 200 | put_device(&container_of((class_dev), struct node_entry, class_dev)->device); |
| 201 | } |
| 202 | |
| 203 | static struct class nodemgr_ne_class = { |
| 204 | .name = "ieee1394_node", |
| 205 | .release = ne_cls_release, |
| 206 | }; |
| 207 | |
| 208 | static void ud_cls_release(struct class_device *class_dev) |
| 209 | { |
| 210 | put_device(&container_of((class_dev), struct unit_directory, class_dev)->device); |
| 211 | } |
| 212 | |
| 213 | /* The name here is only so that unit directory hotplug works with old |
| 214 | * style hotplug, which only ever did unit directories anyway. */ |
| 215 | static struct class nodemgr_ud_class = { |
| 216 | .name = "ieee1394", |
| 217 | .release = ud_cls_release, |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 218 | .uevent = nodemgr_uevent, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | }; |
| 220 | |
| 221 | static struct hpsb_highlevel nodemgr_highlevel; |
| 222 | |
| 223 | |
| 224 | static void nodemgr_release_ud(struct device *dev) |
| 225 | { |
| 226 | struct unit_directory *ud = container_of(dev, struct unit_directory, device); |
| 227 | |
| 228 | if (ud->vendor_name_kv) |
| 229 | csr1212_release_keyval(ud->vendor_name_kv); |
| 230 | if (ud->model_name_kv) |
| 231 | csr1212_release_keyval(ud->model_name_kv); |
| 232 | |
| 233 | kfree(ud); |
| 234 | } |
| 235 | |
| 236 | static void nodemgr_release_ne(struct device *dev) |
| 237 | { |
| 238 | struct node_entry *ne = container_of(dev, struct node_entry, device); |
| 239 | |
| 240 | if (ne->vendor_name_kv) |
| 241 | csr1212_release_keyval(ne->vendor_name_kv); |
| 242 | |
| 243 | kfree(ne); |
| 244 | } |
| 245 | |
| 246 | |
| 247 | static void nodemgr_release_host(struct device *dev) |
| 248 | { |
| 249 | struct hpsb_host *host = container_of(dev, struct hpsb_host, device); |
| 250 | |
| 251 | csr1212_destroy_csr(host->csr.rom); |
| 252 | |
| 253 | kfree(host); |
| 254 | } |
| 255 | |
| 256 | static int nodemgr_ud_platform_data; |
| 257 | |
| 258 | static struct device nodemgr_dev_template_ud = { |
| 259 | .bus = &ieee1394_bus_type, |
| 260 | .release = nodemgr_release_ud, |
| 261 | .platform_data = &nodemgr_ud_platform_data, |
| 262 | }; |
| 263 | |
| 264 | static struct device nodemgr_dev_template_ne = { |
| 265 | .bus = &ieee1394_bus_type, |
| 266 | .release = nodemgr_release_ne, |
| 267 | }; |
| 268 | |
| 269 | struct device nodemgr_dev_template_host = { |
| 270 | .bus = &ieee1394_bus_type, |
| 271 | .release = nodemgr_release_host, |
| 272 | }; |
| 273 | |
| 274 | |
| 275 | #define fw_attr(class, class_type, field, type, format_string) \ |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 276 | static ssize_t fw_show_##class##_##field (struct device *dev, struct device_attribute *attr, char *buf)\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | { \ |
| 278 | class_type *class; \ |
| 279 | class = container_of(dev, class_type, device); \ |
| 280 | return sprintf(buf, format_string, (type)class->field); \ |
| 281 | } \ |
| 282 | static struct device_attribute dev_attr_##class##_##field = { \ |
| 283 | .attr = {.name = __stringify(field), .mode = S_IRUGO }, \ |
| 284 | .show = fw_show_##class##_##field, \ |
| 285 | }; |
| 286 | |
| 287 | #define fw_attr_td(class, class_type, td_kv) \ |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 288 | static ssize_t fw_show_##class##_##td_kv (struct device *dev, struct device_attribute *attr, char *buf)\ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | { \ |
| 290 | int len; \ |
| 291 | class_type *class = container_of(dev, class_type, device); \ |
| 292 | len = (class->td_kv->value.leaf.len - 2) * sizeof(quadlet_t); \ |
| 293 | memcpy(buf, \ |
| 294 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_DATA(class->td_kv), \ |
| 295 | len); \ |
| 296 | while ((buf + len - 1) == '\0') \ |
| 297 | len--; \ |
| 298 | buf[len++] = '\n'; \ |
| 299 | buf[len] = '\0'; \ |
| 300 | return len; \ |
| 301 | } \ |
| 302 | static struct device_attribute dev_attr_##class##_##td_kv = { \ |
| 303 | .attr = {.name = __stringify(td_kv), .mode = S_IRUGO }, \ |
| 304 | .show = fw_show_##class##_##td_kv, \ |
| 305 | }; |
| 306 | |
| 307 | |
| 308 | #define fw_drv_attr(field, type, format_string) \ |
| 309 | static ssize_t fw_drv_show_##field (struct device_driver *drv, char *buf) \ |
| 310 | { \ |
| 311 | struct hpsb_protocol_driver *driver; \ |
| 312 | driver = container_of(drv, struct hpsb_protocol_driver, driver); \ |
| 313 | return sprintf(buf, format_string, (type)driver->field);\ |
| 314 | } \ |
| 315 | static struct driver_attribute driver_attr_drv_##field = { \ |
| 316 | .attr = {.name = __stringify(field), .mode = S_IRUGO }, \ |
| 317 | .show = fw_drv_show_##field, \ |
| 318 | }; |
| 319 | |
| 320 | |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 321 | static ssize_t fw_show_ne_bus_options(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
| 323 | struct node_entry *ne = container_of(dev, struct node_entry, device); |
| 324 | |
| 325 | return sprintf(buf, "IRMC(%d) CMC(%d) ISC(%d) BMC(%d) PMC(%d) GEN(%d) " |
| 326 | "LSPD(%d) MAX_REC(%d) MAX_ROM(%d) CYC_CLK_ACC(%d)\n", |
| 327 | ne->busopt.irmc, |
| 328 | ne->busopt.cmc, ne->busopt.isc, ne->busopt.bmc, |
| 329 | ne->busopt.pmc, ne->busopt.generation, ne->busopt.lnkspd, |
| 330 | ne->busopt.max_rec, |
| 331 | ne->busopt.max_rom, |
| 332 | ne->busopt.cyc_clk_acc); |
| 333 | } |
| 334 | static DEVICE_ATTR(bus_options,S_IRUGO,fw_show_ne_bus_options,NULL); |
| 335 | |
| 336 | |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 337 | static ssize_t fw_show_ne_tlabels_free(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | { |
| 339 | struct node_entry *ne = container_of(dev, struct node_entry, device); |
| 340 | return sprintf(buf, "%d\n", atomic_read(&ne->tpool->count.count) + 1); |
| 341 | } |
| 342 | static DEVICE_ATTR(tlabels_free,S_IRUGO,fw_show_ne_tlabels_free,NULL); |
| 343 | |
| 344 | |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 345 | static ssize_t fw_show_ne_tlabels_allocations(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | { |
| 347 | struct node_entry *ne = container_of(dev, struct node_entry, device); |
| 348 | return sprintf(buf, "%u\n", ne->tpool->allocations); |
| 349 | } |
| 350 | static DEVICE_ATTR(tlabels_allocations,S_IRUGO,fw_show_ne_tlabels_allocations,NULL); |
| 351 | |
| 352 | |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 353 | static ssize_t fw_show_ne_tlabels_mask(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | { |
| 355 | struct node_entry *ne = container_of(dev, struct node_entry, device); |
| 356 | #if (BITS_PER_LONG <= 32) |
| 357 | return sprintf(buf, "0x%08lx%08lx\n", ne->tpool->pool[0], ne->tpool->pool[1]); |
| 358 | #else |
| 359 | return sprintf(buf, "0x%016lx\n", ne->tpool->pool[0]); |
| 360 | #endif |
| 361 | } |
| 362 | static DEVICE_ATTR(tlabels_mask, S_IRUGO, fw_show_ne_tlabels_mask, NULL); |
| 363 | |
| 364 | |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 365 | static ssize_t fw_set_ignore_driver(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | { |
| 367 | struct unit_directory *ud = container_of(dev, struct unit_directory, device); |
| 368 | int state = simple_strtoul(buf, NULL, 10); |
| 369 | |
| 370 | if (state == 1) { |
| 371 | down_write(&dev->bus->subsys.rwsem); |
| 372 | device_release_driver(dev); |
| 373 | ud->ignore_driver = 1; |
| 374 | up_write(&dev->bus->subsys.rwsem); |
| 375 | } else if (!state) |
| 376 | ud->ignore_driver = 0; |
| 377 | |
| 378 | return count; |
| 379 | } |
Yani Ioannou | e404e27 | 2005-05-17 06:42:58 -0400 | [diff] [blame] | 380 | static ssize_t fw_get_ignore_driver(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | { |
| 382 | struct unit_directory *ud = container_of(dev, struct unit_directory, device); |
| 383 | |
| 384 | return sprintf(buf, "%d\n", ud->ignore_driver); |
| 385 | } |
| 386 | static DEVICE_ATTR(ignore_driver, S_IWUSR | S_IRUGO, fw_get_ignore_driver, fw_set_ignore_driver); |
| 387 | |
| 388 | |
| 389 | static ssize_t fw_set_destroy_node(struct bus_type *bus, const char *buf, size_t count) |
| 390 | { |
| 391 | struct node_entry *ne; |
| 392 | u64 guid = (u64)simple_strtoull(buf, NULL, 16); |
| 393 | |
| 394 | ne = find_entry_by_guid(guid); |
| 395 | |
| 396 | if (ne == NULL || !ne->in_limbo) |
| 397 | return -EINVAL; |
| 398 | |
| 399 | nodemgr_remove_ne(ne); |
| 400 | |
| 401 | return count; |
| 402 | } |
| 403 | static ssize_t fw_get_destroy_node(struct bus_type *bus, char *buf) |
| 404 | { |
| 405 | return sprintf(buf, "You can destroy in_limbo nodes by writing their GUID to this file\n"); |
| 406 | } |
| 407 | static BUS_ATTR(destroy_node, S_IWUSR | S_IRUGO, fw_get_destroy_node, fw_set_destroy_node); |
| 408 | |
| 409 | static int nodemgr_rescan_bus_thread(void *__unused) |
| 410 | { |
| 411 | /* No userlevel access needed */ |
| 412 | daemonize("kfwrescan"); |
| 413 | |
| 414 | bus_rescan_devices(&ieee1394_bus_type); |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | static ssize_t fw_set_rescan(struct bus_type *bus, const char *buf, size_t count) |
| 420 | { |
| 421 | int state = simple_strtoul(buf, NULL, 10); |
| 422 | |
| 423 | /* Don't wait for this, or care about errors. Root could do |
| 424 | * something stupid and spawn this a lot of times, but that's |
| 425 | * root's fault. */ |
| 426 | if (state == 1) |
| 427 | kernel_thread(nodemgr_rescan_bus_thread, NULL, CLONE_KERNEL); |
| 428 | |
| 429 | return count; |
| 430 | } |
| 431 | static ssize_t fw_get_rescan(struct bus_type *bus, char *buf) |
| 432 | { |
| 433 | return sprintf(buf, "You can force a rescan of the bus for " |
| 434 | "drivers by writing a 1 to this file\n"); |
| 435 | } |
| 436 | static BUS_ATTR(rescan, S_IWUSR | S_IRUGO, fw_get_rescan, fw_set_rescan); |
| 437 | |
| 438 | |
| 439 | static ssize_t fw_set_ignore_drivers(struct bus_type *bus, const char *buf, size_t count) |
| 440 | { |
| 441 | int state = simple_strtoul(buf, NULL, 10); |
| 442 | |
| 443 | if (state == 1) |
| 444 | ignore_drivers = 1; |
| 445 | else if (!state) |
| 446 | ignore_drivers = 0; |
| 447 | |
| 448 | return count; |
| 449 | } |
| 450 | static ssize_t fw_get_ignore_drivers(struct bus_type *bus, char *buf) |
| 451 | { |
| 452 | return sprintf(buf, "%d\n", ignore_drivers); |
| 453 | } |
| 454 | static BUS_ATTR(ignore_drivers, S_IWUSR | S_IRUGO, fw_get_ignore_drivers, fw_set_ignore_drivers); |
| 455 | |
| 456 | |
| 457 | struct bus_attribute *const fw_bus_attrs[] = { |
| 458 | &bus_attr_destroy_node, |
| 459 | &bus_attr_rescan, |
| 460 | &bus_attr_ignore_drivers, |
| 461 | NULL |
| 462 | }; |
| 463 | |
| 464 | |
| 465 | fw_attr(ne, struct node_entry, capabilities, unsigned int, "0x%06x\n") |
| 466 | fw_attr(ne, struct node_entry, nodeid, unsigned int, "0x%04x\n") |
| 467 | |
| 468 | fw_attr(ne, struct node_entry, vendor_id, unsigned int, "0x%06x\n") |
| 469 | fw_attr_td(ne, struct node_entry, vendor_name_kv) |
| 470 | fw_attr(ne, struct node_entry, vendor_oui, const char *, "%s\n") |
| 471 | |
| 472 | fw_attr(ne, struct node_entry, guid, unsigned long long, "0x%016Lx\n") |
| 473 | fw_attr(ne, struct node_entry, guid_vendor_id, unsigned int, "0x%06x\n") |
| 474 | fw_attr(ne, struct node_entry, guid_vendor_oui, const char *, "%s\n") |
| 475 | fw_attr(ne, struct node_entry, in_limbo, int, "%d\n"); |
| 476 | |
| 477 | static struct device_attribute *const fw_ne_attrs[] = { |
| 478 | &dev_attr_ne_guid, |
| 479 | &dev_attr_ne_guid_vendor_id, |
| 480 | &dev_attr_ne_capabilities, |
| 481 | &dev_attr_ne_vendor_id, |
| 482 | &dev_attr_ne_nodeid, |
| 483 | &dev_attr_bus_options, |
| 484 | &dev_attr_tlabels_free, |
| 485 | &dev_attr_tlabels_allocations, |
| 486 | &dev_attr_tlabels_mask, |
| 487 | }; |
| 488 | |
| 489 | |
| 490 | |
| 491 | fw_attr(ud, struct unit_directory, address, unsigned long long, "0x%016Lx\n") |
| 492 | fw_attr(ud, struct unit_directory, length, int, "%d\n") |
| 493 | /* These are all dependent on the value being provided */ |
| 494 | fw_attr(ud, struct unit_directory, vendor_id, unsigned int, "0x%06x\n") |
| 495 | fw_attr(ud, struct unit_directory, model_id, unsigned int, "0x%06x\n") |
| 496 | fw_attr(ud, struct unit_directory, specifier_id, unsigned int, "0x%06x\n") |
| 497 | fw_attr(ud, struct unit_directory, version, unsigned int, "0x%06x\n") |
| 498 | fw_attr_td(ud, struct unit_directory, vendor_name_kv) |
| 499 | fw_attr(ud, struct unit_directory, vendor_oui, const char *, "%s\n") |
| 500 | fw_attr_td(ud, struct unit_directory, model_name_kv) |
| 501 | |
| 502 | static struct device_attribute *const fw_ud_attrs[] = { |
| 503 | &dev_attr_ud_address, |
| 504 | &dev_attr_ud_length, |
| 505 | &dev_attr_ignore_driver, |
| 506 | }; |
| 507 | |
| 508 | |
| 509 | fw_attr(host, struct hpsb_host, node_count, int, "%d\n") |
| 510 | fw_attr(host, struct hpsb_host, selfid_count, int, "%d\n") |
| 511 | fw_attr(host, struct hpsb_host, nodes_active, int, "%d\n") |
| 512 | fw_attr(host, struct hpsb_host, in_bus_reset, int, "%d\n") |
| 513 | fw_attr(host, struct hpsb_host, is_root, int, "%d\n") |
| 514 | fw_attr(host, struct hpsb_host, is_cycmst, int, "%d\n") |
| 515 | fw_attr(host, struct hpsb_host, is_irm, int, "%d\n") |
| 516 | fw_attr(host, struct hpsb_host, is_busmgr, int, "%d\n") |
| 517 | |
| 518 | static struct device_attribute *const fw_host_attrs[] = { |
| 519 | &dev_attr_host_node_count, |
| 520 | &dev_attr_host_selfid_count, |
| 521 | &dev_attr_host_nodes_active, |
| 522 | &dev_attr_host_in_bus_reset, |
| 523 | &dev_attr_host_is_root, |
| 524 | &dev_attr_host_is_cycmst, |
| 525 | &dev_attr_host_is_irm, |
| 526 | &dev_attr_host_is_busmgr, |
| 527 | }; |
| 528 | |
| 529 | |
| 530 | static ssize_t fw_show_drv_device_ids(struct device_driver *drv, char *buf) |
| 531 | { |
| 532 | struct hpsb_protocol_driver *driver; |
| 533 | struct ieee1394_device_id *id; |
| 534 | int length = 0; |
| 535 | char *scratch = buf; |
| 536 | |
| 537 | driver = container_of(drv, struct hpsb_protocol_driver, driver); |
| 538 | |
| 539 | for (id = driver->id_table; id->match_flags != 0; id++) { |
| 540 | int need_coma = 0; |
| 541 | |
| 542 | if (id->match_flags & IEEE1394_MATCH_VENDOR_ID) { |
| 543 | length += sprintf(scratch, "vendor_id=0x%06x", id->vendor_id); |
| 544 | scratch = buf + length; |
| 545 | need_coma++; |
| 546 | } |
| 547 | |
| 548 | if (id->match_flags & IEEE1394_MATCH_MODEL_ID) { |
| 549 | length += sprintf(scratch, "%smodel_id=0x%06x", |
| 550 | need_coma++ ? "," : "", |
| 551 | id->model_id); |
| 552 | scratch = buf + length; |
| 553 | } |
| 554 | |
| 555 | if (id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) { |
| 556 | length += sprintf(scratch, "%sspecifier_id=0x%06x", |
| 557 | need_coma++ ? "," : "", |
| 558 | id->specifier_id); |
| 559 | scratch = buf + length; |
| 560 | } |
| 561 | |
| 562 | if (id->match_flags & IEEE1394_MATCH_VERSION) { |
| 563 | length += sprintf(scratch, "%sversion=0x%06x", |
| 564 | need_coma++ ? "," : "", |
| 565 | id->version); |
| 566 | scratch = buf + length; |
| 567 | } |
| 568 | |
| 569 | if (need_coma) { |
| 570 | *scratch++ = '\n'; |
| 571 | length++; |
| 572 | } |
| 573 | } |
| 574 | |
| 575 | return length; |
| 576 | } |
| 577 | static DRIVER_ATTR(device_ids,S_IRUGO,fw_show_drv_device_ids,NULL); |
| 578 | |
| 579 | |
| 580 | fw_drv_attr(name, const char *, "%s\n") |
| 581 | |
| 582 | static struct driver_attribute *const fw_drv_attrs[] = { |
| 583 | &driver_attr_drv_name, |
| 584 | &driver_attr_device_ids, |
| 585 | }; |
| 586 | |
| 587 | |
| 588 | static void nodemgr_create_drv_files(struct hpsb_protocol_driver *driver) |
| 589 | { |
| 590 | struct device_driver *drv = &driver->driver; |
| 591 | int i; |
| 592 | |
| 593 | for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++) |
| 594 | driver_create_file(drv, fw_drv_attrs[i]); |
| 595 | } |
| 596 | |
| 597 | |
| 598 | static void nodemgr_remove_drv_files(struct hpsb_protocol_driver *driver) |
| 599 | { |
| 600 | struct device_driver *drv = &driver->driver; |
| 601 | int i; |
| 602 | |
| 603 | for (i = 0; i < ARRAY_SIZE(fw_drv_attrs); i++) |
| 604 | driver_remove_file(drv, fw_drv_attrs[i]); |
| 605 | } |
| 606 | |
| 607 | |
| 608 | static void nodemgr_create_ne_dev_files(struct node_entry *ne) |
| 609 | { |
| 610 | struct device *dev = &ne->device; |
| 611 | int i; |
| 612 | |
| 613 | for (i = 0; i < ARRAY_SIZE(fw_ne_attrs); i++) |
| 614 | device_create_file(dev, fw_ne_attrs[i]); |
| 615 | } |
| 616 | |
| 617 | |
| 618 | static void nodemgr_create_host_dev_files(struct hpsb_host *host) |
| 619 | { |
| 620 | struct device *dev = &host->device; |
| 621 | int i; |
| 622 | |
| 623 | for (i = 0; i < ARRAY_SIZE(fw_host_attrs); i++) |
| 624 | device_create_file(dev, fw_host_attrs[i]); |
| 625 | } |
| 626 | |
| 627 | |
| 628 | static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host, nodeid_t nodeid); |
| 629 | |
| 630 | static void nodemgr_update_host_dev_links(struct hpsb_host *host) |
| 631 | { |
| 632 | struct device *dev = &host->device; |
| 633 | struct node_entry *ne; |
| 634 | |
| 635 | sysfs_remove_link(&dev->kobj, "irm_id"); |
| 636 | sysfs_remove_link(&dev->kobj, "busmgr_id"); |
| 637 | sysfs_remove_link(&dev->kobj, "host_id"); |
| 638 | |
| 639 | if ((ne = find_entry_by_nodeid(host, host->irm_id))) |
| 640 | sysfs_create_link(&dev->kobj, &ne->device.kobj, "irm_id"); |
| 641 | if ((ne = find_entry_by_nodeid(host, host->busmgr_id))) |
| 642 | sysfs_create_link(&dev->kobj, &ne->device.kobj, "busmgr_id"); |
| 643 | if ((ne = find_entry_by_nodeid(host, host->node_id))) |
| 644 | sysfs_create_link(&dev->kobj, &ne->device.kobj, "host_id"); |
| 645 | } |
| 646 | |
| 647 | static void nodemgr_create_ud_dev_files(struct unit_directory *ud) |
| 648 | { |
| 649 | struct device *dev = &ud->device; |
| 650 | int i; |
| 651 | |
| 652 | for (i = 0; i < ARRAY_SIZE(fw_ud_attrs); i++) |
| 653 | device_create_file(dev, fw_ud_attrs[i]); |
| 654 | |
| 655 | if (ud->flags & UNIT_DIRECTORY_SPECIFIER_ID) |
| 656 | device_create_file(dev, &dev_attr_ud_specifier_id); |
| 657 | |
| 658 | if (ud->flags & UNIT_DIRECTORY_VERSION) |
| 659 | device_create_file(dev, &dev_attr_ud_version); |
| 660 | |
| 661 | if (ud->flags & UNIT_DIRECTORY_VENDOR_ID) { |
| 662 | device_create_file(dev, &dev_attr_ud_vendor_id); |
| 663 | if (ud->vendor_name_kv) |
| 664 | device_create_file(dev, &dev_attr_ud_vendor_name_kv); |
| 665 | } |
| 666 | |
| 667 | if (ud->flags & UNIT_DIRECTORY_MODEL_ID) { |
| 668 | device_create_file(dev, &dev_attr_ud_model_id); |
| 669 | if (ud->model_name_kv) |
| 670 | device_create_file(dev, &dev_attr_ud_model_name_kv); |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | |
| 675 | static int nodemgr_bus_match(struct device * dev, struct device_driver * drv) |
| 676 | { |
| 677 | struct hpsb_protocol_driver *driver; |
| 678 | struct unit_directory *ud; |
| 679 | struct ieee1394_device_id *id; |
| 680 | |
| 681 | /* We only match unit directories */ |
| 682 | if (dev->platform_data != &nodemgr_ud_platform_data) |
| 683 | return 0; |
| 684 | |
| 685 | ud = container_of(dev, struct unit_directory, device); |
| 686 | driver = container_of(drv, struct hpsb_protocol_driver, driver); |
| 687 | |
| 688 | if (ud->ne->in_limbo || ud->ignore_driver) |
| 689 | return 0; |
| 690 | |
| 691 | for (id = driver->id_table; id->match_flags != 0; id++) { |
| 692 | if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) && |
| 693 | id->vendor_id != ud->vendor_id) |
| 694 | continue; |
| 695 | |
| 696 | if ((id->match_flags & IEEE1394_MATCH_MODEL_ID) && |
| 697 | id->model_id != ud->model_id) |
| 698 | continue; |
| 699 | |
| 700 | if ((id->match_flags & IEEE1394_MATCH_SPECIFIER_ID) && |
| 701 | id->specifier_id != ud->specifier_id) |
| 702 | continue; |
| 703 | |
| 704 | if ((id->match_flags & IEEE1394_MATCH_VERSION) && |
| 705 | id->version != ud->version) |
| 706 | continue; |
| 707 | |
| 708 | return 1; |
| 709 | } |
| 710 | |
| 711 | return 0; |
| 712 | } |
| 713 | |
| 714 | |
| 715 | static void nodemgr_remove_uds(struct node_entry *ne) |
| 716 | { |
| 717 | struct class_device *cdev, *next; |
| 718 | struct unit_directory *ud; |
| 719 | |
| 720 | list_for_each_entry_safe(cdev, next, &nodemgr_ud_class.children, node) { |
| 721 | ud = container_of(cdev, struct unit_directory, class_dev); |
| 722 | |
| 723 | if (ud->ne != ne) |
| 724 | continue; |
| 725 | |
| 726 | class_device_unregister(&ud->class_dev); |
| 727 | device_unregister(&ud->device); |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | |
| 732 | static void nodemgr_remove_ne(struct node_entry *ne) |
| 733 | { |
| 734 | struct device *dev = &ne->device; |
| 735 | |
| 736 | dev = get_device(&ne->device); |
| 737 | if (!dev) |
| 738 | return; |
| 739 | |
| 740 | HPSB_DEBUG("Node removed: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", |
| 741 | NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid); |
| 742 | |
| 743 | nodemgr_remove_uds(ne); |
| 744 | |
| 745 | class_device_unregister(&ne->class_dev); |
| 746 | device_unregister(dev); |
| 747 | |
| 748 | put_device(dev); |
| 749 | } |
| 750 | |
gregkh@suse.de | 6436032 | 2005-03-25 11:45:31 -0800 | [diff] [blame] | 751 | static int __nodemgr_remove_host_dev(struct device *dev, void *data) |
| 752 | { |
| 753 | nodemgr_remove_ne(container_of(dev, struct node_entry, device)); |
| 754 | return 0; |
| 755 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | |
| 757 | static void nodemgr_remove_host_dev(struct device *dev) |
| 758 | { |
gregkh@suse.de | 6436032 | 2005-03-25 11:45:31 -0800 | [diff] [blame] | 759 | device_for_each_child(dev, NULL, __nodemgr_remove_host_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | sysfs_remove_link(&dev->kobj, "irm_id"); |
| 761 | sysfs_remove_link(&dev->kobj, "busmgr_id"); |
| 762 | sysfs_remove_link(&dev->kobj, "host_id"); |
| 763 | } |
| 764 | |
| 765 | |
| 766 | static void nodemgr_update_bus_options(struct node_entry *ne) |
| 767 | { |
| 768 | #ifdef CONFIG_IEEE1394_VERBOSEDEBUG |
| 769 | static const u16 mr[] = { 4, 64, 1024, 0}; |
| 770 | #endif |
| 771 | quadlet_t busoptions = be32_to_cpu(ne->csr->bus_info_data[2]); |
| 772 | |
| 773 | ne->busopt.irmc = (busoptions >> 31) & 1; |
| 774 | ne->busopt.cmc = (busoptions >> 30) & 1; |
| 775 | ne->busopt.isc = (busoptions >> 29) & 1; |
| 776 | ne->busopt.bmc = (busoptions >> 28) & 1; |
| 777 | ne->busopt.pmc = (busoptions >> 27) & 1; |
| 778 | ne->busopt.cyc_clk_acc = (busoptions >> 16) & 0xff; |
| 779 | ne->busopt.max_rec = 1 << (((busoptions >> 12) & 0xf) + 1); |
| 780 | ne->busopt.max_rom = (busoptions >> 8) & 0x3; |
| 781 | ne->busopt.generation = (busoptions >> 4) & 0xf; |
| 782 | ne->busopt.lnkspd = busoptions & 0x7; |
| 783 | |
| 784 | HPSB_VERBOSE("NodeMgr: raw=0x%08x irmc=%d cmc=%d isc=%d bmc=%d pmc=%d " |
| 785 | "cyc_clk_acc=%d max_rec=%d max_rom=%d gen=%d lspd=%d", |
| 786 | busoptions, ne->busopt.irmc, ne->busopt.cmc, |
| 787 | ne->busopt.isc, ne->busopt.bmc, ne->busopt.pmc, |
| 788 | ne->busopt.cyc_clk_acc, ne->busopt.max_rec, |
| 789 | mr[ne->busopt.max_rom], |
| 790 | ne->busopt.generation, ne->busopt.lnkspd); |
| 791 | } |
| 792 | |
| 793 | |
| 794 | static struct node_entry *nodemgr_create_node(octlet_t guid, struct csr1212_csr *csr, |
| 795 | struct host_info *hi, nodeid_t nodeid, |
| 796 | unsigned int generation) |
| 797 | { |
| 798 | struct hpsb_host *host = hi->host; |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 799 | struct node_entry *ne; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 801 | ne = kzalloc(sizeof(*ne), GFP_KERNEL); |
| 802 | if (!ne) |
| 803 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | |
| 805 | ne->tpool = &host->tpool[nodeid & NODE_MASK]; |
| 806 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 807 | ne->host = host; |
| 808 | ne->nodeid = nodeid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | ne->generation = generation; |
| 810 | ne->needs_probe = 1; |
| 811 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 812 | ne->guid = guid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | ne->guid_vendor_id = (guid >> 40) & 0xffffff; |
| 814 | ne->guid_vendor_oui = nodemgr_find_oui_name(ne->guid_vendor_id); |
| 815 | ne->csr = csr; |
| 816 | |
| 817 | memcpy(&ne->device, &nodemgr_dev_template_ne, |
| 818 | sizeof(ne->device)); |
| 819 | ne->device.parent = &host->device; |
| 820 | snprintf(ne->device.bus_id, BUS_ID_SIZE, "%016Lx", |
| 821 | (unsigned long long)(ne->guid)); |
| 822 | |
| 823 | ne->class_dev.dev = &ne->device; |
| 824 | ne->class_dev.class = &nodemgr_ne_class; |
| 825 | snprintf(ne->class_dev.class_id, BUS_ID_SIZE, "%016Lx", |
| 826 | (unsigned long long)(ne->guid)); |
| 827 | |
| 828 | device_register(&ne->device); |
| 829 | class_device_register(&ne->class_dev); |
| 830 | get_device(&ne->device); |
| 831 | |
| 832 | if (ne->guid_vendor_oui) |
| 833 | device_create_file(&ne->device, &dev_attr_ne_guid_vendor_oui); |
| 834 | nodemgr_create_ne_dev_files(ne); |
| 835 | |
| 836 | nodemgr_update_bus_options(ne); |
| 837 | |
| 838 | HPSB_DEBUG("%s added: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", |
| 839 | (host->node_id == nodeid) ? "Host" : "Node", |
| 840 | NODE_BUS_ARGS(host, nodeid), (unsigned long long)guid); |
| 841 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 842 | return ne; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | } |
| 844 | |
| 845 | |
| 846 | static struct node_entry *find_entry_by_guid(u64 guid) |
| 847 | { |
| 848 | struct class *class = &nodemgr_ne_class; |
| 849 | struct class_device *cdev; |
| 850 | struct node_entry *ne, *ret_ne = NULL; |
| 851 | |
| 852 | down_read(&class->subsys.rwsem); |
| 853 | list_for_each_entry(cdev, &class->children, node) { |
| 854 | ne = container_of(cdev, struct node_entry, class_dev); |
| 855 | |
| 856 | if (ne->guid == guid) { |
| 857 | ret_ne = ne; |
| 858 | break; |
| 859 | } |
| 860 | } |
| 861 | up_read(&class->subsys.rwsem); |
| 862 | |
| 863 | return ret_ne; |
| 864 | } |
| 865 | |
| 866 | |
| 867 | static struct node_entry *find_entry_by_nodeid(struct hpsb_host *host, nodeid_t nodeid) |
| 868 | { |
| 869 | struct class *class = &nodemgr_ne_class; |
| 870 | struct class_device *cdev; |
| 871 | struct node_entry *ne, *ret_ne = NULL; |
| 872 | |
| 873 | down_read(&class->subsys.rwsem); |
| 874 | list_for_each_entry(cdev, &class->children, node) { |
| 875 | ne = container_of(cdev, struct node_entry, class_dev); |
| 876 | |
| 877 | if (ne->host == host && ne->nodeid == nodeid) { |
| 878 | ret_ne = ne; |
| 879 | break; |
| 880 | } |
| 881 | } |
| 882 | up_read(&class->subsys.rwsem); |
| 883 | |
| 884 | return ret_ne; |
| 885 | } |
| 886 | |
| 887 | |
| 888 | static void nodemgr_register_device(struct node_entry *ne, |
| 889 | struct unit_directory *ud, struct device *parent) |
| 890 | { |
| 891 | memcpy(&ud->device, &nodemgr_dev_template_ud, |
| 892 | sizeof(ud->device)); |
| 893 | |
| 894 | ud->device.parent = parent; |
| 895 | |
| 896 | snprintf(ud->device.bus_id, BUS_ID_SIZE, "%s-%u", |
| 897 | ne->device.bus_id, ud->id); |
| 898 | |
| 899 | ud->class_dev.dev = &ud->device; |
| 900 | ud->class_dev.class = &nodemgr_ud_class; |
| 901 | snprintf(ud->class_dev.class_id, BUS_ID_SIZE, "%s-%u", |
| 902 | ne->device.bus_id, ud->id); |
| 903 | |
| 904 | device_register(&ud->device); |
| 905 | class_device_register(&ud->class_dev); |
| 906 | get_device(&ud->device); |
| 907 | |
| 908 | if (ud->vendor_oui) |
| 909 | device_create_file(&ud->device, &dev_attr_ud_vendor_oui); |
| 910 | nodemgr_create_ud_dev_files(ud); |
| 911 | } |
| 912 | |
| 913 | |
| 914 | /* This implementation currently only scans the config rom and its |
| 915 | * immediate unit directories looking for software_id and |
| 916 | * software_version entries, in order to get driver autoloading working. */ |
| 917 | static struct unit_directory *nodemgr_process_unit_directory |
| 918 | (struct host_info *hi, struct node_entry *ne, struct csr1212_keyval *ud_kv, |
| 919 | unsigned int *id, struct unit_directory *parent) |
| 920 | { |
| 921 | struct unit_directory *ud; |
| 922 | struct unit_directory *ud_child = NULL; |
| 923 | struct csr1212_dentry *dentry; |
| 924 | struct csr1212_keyval *kv; |
| 925 | u8 last_key_id = 0; |
| 926 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 927 | ud = kzalloc(sizeof(*ud), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | if (!ud) |
| 929 | goto unit_directory_error; |
| 930 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | ud->ne = ne; |
| 932 | ud->ignore_driver = ignore_drivers; |
| 933 | ud->address = ud_kv->offset + CSR1212_CONFIG_ROM_SPACE_BASE; |
| 934 | ud->ud_kv = ud_kv; |
| 935 | ud->id = (*id)++; |
| 936 | |
| 937 | csr1212_for_each_dir_entry(ne->csr, kv, ud_kv, dentry) { |
| 938 | switch (kv->key.id) { |
| 939 | case CSR1212_KV_ID_VENDOR: |
| 940 | if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) { |
| 941 | ud->vendor_id = kv->value.immediate; |
| 942 | ud->flags |= UNIT_DIRECTORY_VENDOR_ID; |
| 943 | |
| 944 | if (ud->vendor_id) |
| 945 | ud->vendor_oui = nodemgr_find_oui_name(ud->vendor_id); |
| 946 | } |
| 947 | break; |
| 948 | |
| 949 | case CSR1212_KV_ID_MODEL: |
| 950 | ud->model_id = kv->value.immediate; |
| 951 | ud->flags |= UNIT_DIRECTORY_MODEL_ID; |
| 952 | break; |
| 953 | |
| 954 | case CSR1212_KV_ID_SPECIFIER_ID: |
| 955 | ud->specifier_id = kv->value.immediate; |
| 956 | ud->flags |= UNIT_DIRECTORY_SPECIFIER_ID; |
| 957 | break; |
| 958 | |
| 959 | case CSR1212_KV_ID_VERSION: |
| 960 | ud->version = kv->value.immediate; |
| 961 | ud->flags |= UNIT_DIRECTORY_VERSION; |
| 962 | break; |
| 963 | |
| 964 | case CSR1212_KV_ID_DESCRIPTOR: |
| 965 | if (kv->key.type == CSR1212_KV_TYPE_LEAF && |
| 966 | CSR1212_DESCRIPTOR_LEAF_TYPE(kv) == 0 && |
| 967 | CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) == 0 && |
| 968 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) == 0 && |
| 969 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) == 0 && |
| 970 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) == 0) { |
| 971 | switch (last_key_id) { |
| 972 | case CSR1212_KV_ID_VENDOR: |
| 973 | ud->vendor_name_kv = kv; |
| 974 | csr1212_keep_keyval(kv); |
| 975 | break; |
| 976 | |
| 977 | case CSR1212_KV_ID_MODEL: |
| 978 | ud->model_name_kv = kv; |
| 979 | csr1212_keep_keyval(kv); |
| 980 | break; |
| 981 | |
| 982 | } |
| 983 | } /* else if (kv->key.type == CSR1212_KV_TYPE_DIRECTORY) ... */ |
| 984 | break; |
| 985 | |
| 986 | case CSR1212_KV_ID_DEPENDENT_INFO: |
| 987 | /* Logical Unit Number */ |
| 988 | if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) { |
| 989 | if (ud->flags & UNIT_DIRECTORY_HAS_LUN) { |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 990 | ud_child = kmalloc(sizeof(*ud_child), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | if (!ud_child) |
| 992 | goto unit_directory_error; |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 993 | memcpy(ud_child, ud, sizeof(*ud_child)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | nodemgr_register_device(ne, ud_child, &ne->device); |
| 995 | ud_child = NULL; |
| 996 | |
| 997 | ud->id = (*id)++; |
| 998 | } |
| 999 | ud->lun = kv->value.immediate; |
| 1000 | ud->flags |= UNIT_DIRECTORY_HAS_LUN; |
| 1001 | |
| 1002 | /* Logical Unit Directory */ |
| 1003 | } else if (kv->key.type == CSR1212_KV_TYPE_DIRECTORY) { |
| 1004 | /* This should really be done in SBP2 as this is |
| 1005 | * doing SBP2 specific parsing. |
| 1006 | */ |
| 1007 | |
| 1008 | /* first register the parent unit */ |
| 1009 | ud->flags |= UNIT_DIRECTORY_HAS_LUN_DIRECTORY; |
| 1010 | if (ud->device.bus != &ieee1394_bus_type) |
| 1011 | nodemgr_register_device(ne, ud, &ne->device); |
| 1012 | |
| 1013 | /* process the child unit */ |
| 1014 | ud_child = nodemgr_process_unit_directory(hi, ne, kv, id, ud); |
| 1015 | |
| 1016 | if (ud_child == NULL) |
| 1017 | break; |
| 1018 | |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 1019 | /* inherit unspecified values, the driver core picks it up */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | if ((ud->flags & UNIT_DIRECTORY_MODEL_ID) && |
| 1021 | !(ud_child->flags & UNIT_DIRECTORY_MODEL_ID)) |
| 1022 | { |
| 1023 | ud_child->flags |= UNIT_DIRECTORY_MODEL_ID; |
| 1024 | ud_child->model_id = ud->model_id; |
| 1025 | } |
| 1026 | if ((ud->flags & UNIT_DIRECTORY_SPECIFIER_ID) && |
| 1027 | !(ud_child->flags & UNIT_DIRECTORY_SPECIFIER_ID)) |
| 1028 | { |
| 1029 | ud_child->flags |= UNIT_DIRECTORY_SPECIFIER_ID; |
| 1030 | ud_child->specifier_id = ud->specifier_id; |
| 1031 | } |
| 1032 | if ((ud->flags & UNIT_DIRECTORY_VERSION) && |
| 1033 | !(ud_child->flags & UNIT_DIRECTORY_VERSION)) |
| 1034 | { |
| 1035 | ud_child->flags |= UNIT_DIRECTORY_VERSION; |
| 1036 | ud_child->version = ud->version; |
| 1037 | } |
| 1038 | |
| 1039 | /* register the child unit */ |
| 1040 | ud_child->flags |= UNIT_DIRECTORY_LUN_DIRECTORY; |
| 1041 | nodemgr_register_device(ne, ud_child, &ud->device); |
| 1042 | } |
| 1043 | |
| 1044 | break; |
| 1045 | |
| 1046 | default: |
| 1047 | break; |
| 1048 | } |
| 1049 | last_key_id = kv->key.id; |
| 1050 | } |
| 1051 | |
| 1052 | /* do not process child units here and only if not already registered */ |
| 1053 | if (!parent && ud->device.bus != &ieee1394_bus_type) |
| 1054 | nodemgr_register_device(ne, ud, &ne->device); |
| 1055 | |
| 1056 | return ud; |
| 1057 | |
| 1058 | unit_directory_error: |
Jody McIntyre | 616b859 | 2005-05-16 21:54:01 -0700 | [diff] [blame] | 1059 | kfree(ud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | return NULL; |
| 1061 | } |
| 1062 | |
| 1063 | |
| 1064 | static void nodemgr_process_root_directory(struct host_info *hi, struct node_entry *ne) |
| 1065 | { |
| 1066 | unsigned int ud_id = 0; |
| 1067 | struct csr1212_dentry *dentry; |
| 1068 | struct csr1212_keyval *kv; |
| 1069 | u8 last_key_id = 0; |
| 1070 | |
| 1071 | ne->needs_probe = 0; |
| 1072 | |
| 1073 | csr1212_for_each_dir_entry(ne->csr, kv, ne->csr->root_kv, dentry) { |
| 1074 | switch (kv->key.id) { |
| 1075 | case CSR1212_KV_ID_VENDOR: |
| 1076 | ne->vendor_id = kv->value.immediate; |
| 1077 | |
| 1078 | if (ne->vendor_id) |
| 1079 | ne->vendor_oui = nodemgr_find_oui_name(ne->vendor_id); |
| 1080 | break; |
| 1081 | |
| 1082 | case CSR1212_KV_ID_NODE_CAPABILITIES: |
| 1083 | ne->capabilities = kv->value.immediate; |
| 1084 | break; |
| 1085 | |
| 1086 | case CSR1212_KV_ID_UNIT: |
| 1087 | nodemgr_process_unit_directory(hi, ne, kv, &ud_id, NULL); |
| 1088 | break; |
| 1089 | |
| 1090 | case CSR1212_KV_ID_DESCRIPTOR: |
| 1091 | if (last_key_id == CSR1212_KV_ID_VENDOR) { |
| 1092 | if (kv->key.type == CSR1212_KV_TYPE_LEAF && |
| 1093 | CSR1212_DESCRIPTOR_LEAF_TYPE(kv) == 0 && |
| 1094 | CSR1212_DESCRIPTOR_LEAF_SPECIFIER_ID(kv) == 0 && |
| 1095 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) == 0 && |
| 1096 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) == 0 && |
| 1097 | CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) == 0) { |
| 1098 | ne->vendor_name_kv = kv; |
| 1099 | csr1212_keep_keyval(kv); |
| 1100 | } |
| 1101 | } |
| 1102 | break; |
| 1103 | } |
| 1104 | last_key_id = kv->key.id; |
| 1105 | } |
| 1106 | |
| 1107 | if (ne->vendor_oui) |
| 1108 | device_create_file(&ne->device, &dev_attr_ne_vendor_oui); |
| 1109 | if (ne->vendor_name_kv) |
| 1110 | device_create_file(&ne->device, &dev_attr_ne_vendor_name_kv); |
| 1111 | } |
| 1112 | |
| 1113 | #ifdef CONFIG_HOTPLUG |
| 1114 | |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 1115 | static int nodemgr_uevent(struct class_device *cdev, char **envp, int num_envp, |
| 1116 | char *buffer, int buffer_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | { |
| 1118 | struct unit_directory *ud; |
| 1119 | int i = 0; |
| 1120 | int length = 0; |
Olaf Hering | 9b19d85 | 2005-09-06 15:18:18 -0700 | [diff] [blame] | 1121 | /* ieee1394:venNmoNspNverN */ |
| 1122 | char buf[8 + 1 + 3 + 8 + 2 + 8 + 2 + 8 + 3 + 8 + 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | |
| 1124 | if (!cdev) |
| 1125 | return -ENODEV; |
| 1126 | |
| 1127 | ud = container_of(cdev, struct unit_directory, class_dev); |
| 1128 | |
| 1129 | if (ud->ne->in_limbo || ud->ignore_driver) |
| 1130 | return -ENODEV; |
| 1131 | |
| 1132 | #define PUT_ENVP(fmt,val) \ |
| 1133 | do { \ |
| 1134 | int printed; \ |
| 1135 | envp[i++] = buffer; \ |
| 1136 | printed = snprintf(buffer, buffer_size - length, \ |
| 1137 | fmt, val); \ |
| 1138 | if ((buffer_size - (length+printed) <= 0) || (i >= num_envp)) \ |
| 1139 | return -ENOMEM; \ |
| 1140 | length += printed+1; \ |
| 1141 | buffer += printed+1; \ |
| 1142 | } while (0) |
| 1143 | |
| 1144 | PUT_ENVP("VENDOR_ID=%06x", ud->vendor_id); |
| 1145 | PUT_ENVP("MODEL_ID=%06x", ud->model_id); |
| 1146 | PUT_ENVP("GUID=%016Lx", (unsigned long long)ud->ne->guid); |
| 1147 | PUT_ENVP("SPECIFIER_ID=%06x", ud->specifier_id); |
| 1148 | PUT_ENVP("VERSION=%06x", ud->version); |
Olaf Hering | 9b19d85 | 2005-09-06 15:18:18 -0700 | [diff] [blame] | 1149 | snprintf(buf, sizeof(buf), "ieee1394:ven%08Xmo%08Xsp%08Xver%08X", |
| 1150 | ud->vendor_id, |
| 1151 | ud->model_id, |
| 1152 | ud->specifier_id, |
| 1153 | ud->version); |
| 1154 | PUT_ENVP("MODALIAS=%s", buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
| 1156 | #undef PUT_ENVP |
| 1157 | |
| 1158 | envp[i] = NULL; |
| 1159 | |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
| 1163 | #else |
| 1164 | |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 1165 | static int nodemgr_uevent(struct class_device *cdev, char **envp, int num_envp, |
| 1166 | char *buffer, int buffer_size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | { |
| 1168 | return -ENODEV; |
| 1169 | } |
| 1170 | |
| 1171 | #endif /* CONFIG_HOTPLUG */ |
| 1172 | |
| 1173 | |
| 1174 | int hpsb_register_protocol(struct hpsb_protocol_driver *driver) |
| 1175 | { |
| 1176 | int ret; |
| 1177 | |
| 1178 | /* This will cause a probe for devices */ |
| 1179 | ret = driver_register(&driver->driver); |
| 1180 | if (!ret) |
| 1181 | nodemgr_create_drv_files(driver); |
| 1182 | |
| 1183 | return ret; |
| 1184 | } |
| 1185 | |
| 1186 | void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver) |
| 1187 | { |
| 1188 | nodemgr_remove_drv_files(driver); |
| 1189 | /* This will subsequently disconnect all devices that our driver |
| 1190 | * is attached to. */ |
| 1191 | driver_unregister(&driver->driver); |
| 1192 | } |
| 1193 | |
| 1194 | |
| 1195 | /* |
| 1196 | * This function updates nodes that were present on the bus before the |
| 1197 | * reset and still are after the reset. The nodeid and the config rom |
| 1198 | * may have changed, and the drivers managing this device must be |
| 1199 | * informed that this device just went through a bus reset, to allow |
| 1200 | * the to take whatever actions required. |
| 1201 | */ |
| 1202 | static void nodemgr_update_node(struct node_entry *ne, struct csr1212_csr *csr, |
| 1203 | struct host_info *hi, nodeid_t nodeid, |
| 1204 | unsigned int generation) |
| 1205 | { |
| 1206 | if (ne->nodeid != nodeid) { |
| 1207 | HPSB_DEBUG("Node changed: " NODE_BUS_FMT " -> " NODE_BUS_FMT, |
| 1208 | NODE_BUS_ARGS(ne->host, ne->nodeid), |
| 1209 | NODE_BUS_ARGS(ne->host, nodeid)); |
| 1210 | ne->nodeid = nodeid; |
| 1211 | } |
| 1212 | |
| 1213 | if (ne->busopt.generation != ((be32_to_cpu(csr->bus_info_data[2]) >> 4) & 0xf)) { |
| 1214 | kfree(ne->csr->private); |
| 1215 | csr1212_destroy_csr(ne->csr); |
| 1216 | ne->csr = csr; |
| 1217 | |
| 1218 | /* If the node's configrom generation has changed, we |
| 1219 | * unregister all the unit directories. */ |
| 1220 | nodemgr_remove_uds(ne); |
| 1221 | |
| 1222 | nodemgr_update_bus_options(ne); |
| 1223 | |
| 1224 | /* Mark the node as new, so it gets re-probed */ |
| 1225 | ne->needs_probe = 1; |
| 1226 | } else { |
| 1227 | /* old cache is valid, so update its generation */ |
| 1228 | struct nodemgr_csr_info *ci = ne->csr->private; |
| 1229 | ci->generation = generation; |
| 1230 | /* free the partially filled now unneeded new cache */ |
| 1231 | kfree(csr->private); |
| 1232 | csr1212_destroy_csr(csr); |
| 1233 | } |
| 1234 | |
| 1235 | if (ne->in_limbo) |
| 1236 | nodemgr_resume_ne(ne); |
| 1237 | |
| 1238 | /* Mark the node current */ |
| 1239 | ne->generation = generation; |
| 1240 | } |
| 1241 | |
| 1242 | |
| 1243 | |
| 1244 | static void nodemgr_node_scan_one(struct host_info *hi, |
| 1245 | nodeid_t nodeid, int generation) |
| 1246 | { |
| 1247 | struct hpsb_host *host = hi->host; |
| 1248 | struct node_entry *ne; |
| 1249 | octlet_t guid; |
| 1250 | struct csr1212_csr *csr; |
| 1251 | struct nodemgr_csr_info *ci; |
| 1252 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 1253 | ci = kmalloc(sizeof(*ci), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1254 | if (!ci) |
| 1255 | return; |
| 1256 | |
| 1257 | ci->host = host; |
| 1258 | ci->nodeid = nodeid; |
| 1259 | ci->generation = generation; |
Ben Collins | 647dcb5 | 2006-06-12 18:12:37 -0400 | [diff] [blame] | 1260 | ci->speed_unverified = |
| 1261 | host->speed[NODEID_TO_NODE(nodeid)] > IEEE1394_SPEED_100; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | |
| 1263 | /* We need to detect when the ConfigROM's generation has changed, |
| 1264 | * so we only update the node's info when it needs to be. */ |
| 1265 | |
| 1266 | csr = csr1212_create_csr(&nodemgr_csr_ops, 5 * sizeof(quadlet_t), ci); |
| 1267 | if (!csr || csr1212_parse_csr(csr) != CSR1212_SUCCESS) { |
| 1268 | HPSB_ERR("Error parsing configrom for node " NODE_BUS_FMT, |
| 1269 | NODE_BUS_ARGS(host, nodeid)); |
| 1270 | if (csr) |
| 1271 | csr1212_destroy_csr(csr); |
| 1272 | kfree(ci); |
| 1273 | return; |
| 1274 | } |
| 1275 | |
| 1276 | if (csr->bus_info_data[1] != IEEE1394_BUSID_MAGIC) { |
| 1277 | /* This isn't a 1394 device, but we let it slide. There |
| 1278 | * was a report of a device with broken firmware which |
| 1279 | * reported '2394' instead of '1394', which is obviously a |
| 1280 | * mistake. One would hope that a non-1394 device never |
| 1281 | * gets connected to Firewire bus. If someone does, we |
| 1282 | * shouldn't be held responsible, so we'll allow it with a |
| 1283 | * warning. */ |
| 1284 | HPSB_WARN("Node " NODE_BUS_FMT " has invalid busID magic [0x%08x]", |
| 1285 | NODE_BUS_ARGS(host, nodeid), csr->bus_info_data[1]); |
| 1286 | } |
| 1287 | |
| 1288 | guid = ((u64)be32_to_cpu(csr->bus_info_data[3]) << 32) | be32_to_cpu(csr->bus_info_data[4]); |
| 1289 | ne = find_entry_by_guid(guid); |
| 1290 | |
| 1291 | if (ne && ne->host != host && ne->in_limbo) { |
| 1292 | /* Must have moved this device from one host to another */ |
| 1293 | nodemgr_remove_ne(ne); |
| 1294 | ne = NULL; |
| 1295 | } |
| 1296 | |
| 1297 | if (!ne) |
| 1298 | nodemgr_create_node(guid, csr, hi, nodeid, generation); |
| 1299 | else |
| 1300 | nodemgr_update_node(ne, csr, hi, nodeid, generation); |
| 1301 | |
| 1302 | return; |
| 1303 | } |
| 1304 | |
| 1305 | |
| 1306 | static void nodemgr_node_scan(struct host_info *hi, int generation) |
| 1307 | { |
| 1308 | int count; |
| 1309 | struct hpsb_host *host = hi->host; |
| 1310 | struct selfid *sid = (struct selfid *)host->topology_map; |
| 1311 | nodeid_t nodeid = LOCAL_BUS; |
| 1312 | |
| 1313 | /* Scan each node on the bus */ |
| 1314 | for (count = host->selfid_count; count; count--, sid++) { |
| 1315 | if (sid->extended) |
| 1316 | continue; |
| 1317 | |
| 1318 | if (!sid->link_active) { |
| 1319 | nodeid++; |
| 1320 | continue; |
| 1321 | } |
| 1322 | nodemgr_node_scan_one(hi, nodeid++, generation); |
| 1323 | } |
| 1324 | } |
| 1325 | |
| 1326 | |
| 1327 | static void nodemgr_suspend_ne(struct node_entry *ne) |
| 1328 | { |
| 1329 | struct class_device *cdev; |
| 1330 | struct unit_directory *ud; |
| 1331 | |
| 1332 | HPSB_DEBUG("Node suspended: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", |
| 1333 | NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid); |
| 1334 | |
| 1335 | ne->in_limbo = 1; |
| 1336 | device_create_file(&ne->device, &dev_attr_ne_in_limbo); |
| 1337 | |
| 1338 | down_write(&ne->device.bus->subsys.rwsem); |
| 1339 | list_for_each_entry(cdev, &nodemgr_ud_class.children, node) { |
| 1340 | ud = container_of(cdev, struct unit_directory, class_dev); |
| 1341 | |
| 1342 | if (ud->ne != ne) |
| 1343 | continue; |
| 1344 | |
| 1345 | if (ud->device.driver && |
| 1346 | (!ud->device.driver->suspend || |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1347 | ud->device.driver->suspend(&ud->device, PMSG_SUSPEND))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | device_release_driver(&ud->device); |
| 1349 | } |
| 1350 | up_write(&ne->device.bus->subsys.rwsem); |
| 1351 | } |
| 1352 | |
| 1353 | |
| 1354 | static void nodemgr_resume_ne(struct node_entry *ne) |
| 1355 | { |
| 1356 | struct class_device *cdev; |
| 1357 | struct unit_directory *ud; |
| 1358 | |
| 1359 | ne->in_limbo = 0; |
| 1360 | device_remove_file(&ne->device, &dev_attr_ne_in_limbo); |
| 1361 | |
| 1362 | down_read(&ne->device.bus->subsys.rwsem); |
| 1363 | list_for_each_entry(cdev, &nodemgr_ud_class.children, node) { |
| 1364 | ud = container_of(cdev, struct unit_directory, class_dev); |
| 1365 | |
| 1366 | if (ud->ne != ne) |
| 1367 | continue; |
| 1368 | |
| 1369 | if (ud->device.driver && ud->device.driver->resume) |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 1370 | ud->device.driver->resume(&ud->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | } |
| 1372 | up_read(&ne->device.bus->subsys.rwsem); |
| 1373 | |
| 1374 | HPSB_DEBUG("Node resumed: ID:BUS[" NODE_BUS_FMT "] GUID[%016Lx]", |
| 1375 | NODE_BUS_ARGS(ne->host, ne->nodeid), (unsigned long long)ne->guid); |
| 1376 | } |
| 1377 | |
| 1378 | |
| 1379 | static void nodemgr_update_pdrv(struct node_entry *ne) |
| 1380 | { |
| 1381 | struct unit_directory *ud; |
| 1382 | struct hpsb_protocol_driver *pdrv; |
| 1383 | struct class *class = &nodemgr_ud_class; |
| 1384 | struct class_device *cdev; |
| 1385 | |
| 1386 | down_read(&class->subsys.rwsem); |
| 1387 | list_for_each_entry(cdev, &class->children, node) { |
| 1388 | ud = container_of(cdev, struct unit_directory, class_dev); |
| 1389 | if (ud->ne != ne || !ud->device.driver) |
| 1390 | continue; |
| 1391 | |
| 1392 | pdrv = container_of(ud->device.driver, struct hpsb_protocol_driver, driver); |
| 1393 | |
| 1394 | if (pdrv->update && pdrv->update(ud)) { |
| 1395 | down_write(&ud->device.bus->subsys.rwsem); |
| 1396 | device_release_driver(&ud->device); |
| 1397 | up_write(&ud->device.bus->subsys.rwsem); |
| 1398 | } |
| 1399 | } |
| 1400 | up_read(&class->subsys.rwsem); |
| 1401 | } |
| 1402 | |
| 1403 | |
Stefan Richter | 61c7f77 | 2005-12-05 16:28:59 -0500 | [diff] [blame] | 1404 | /* Write the BROADCAST_CHANNEL as per IEEE1394a 8.3.2.3.11 and 8.4.2.3. This |
| 1405 | * seems like an optional service but in the end it is practically mandatory |
| 1406 | * as a consequence of these clauses. |
| 1407 | * |
| 1408 | * Note that we cannot do a broadcast write to all nodes at once because some |
| 1409 | * pre-1394a devices would hang. */ |
| 1410 | static void nodemgr_irm_write_bc(struct node_entry *ne, int generation) |
| 1411 | { |
| 1412 | const u64 bc_addr = (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL); |
| 1413 | quadlet_t bc_remote, bc_local; |
| 1414 | int ret; |
| 1415 | |
| 1416 | if (!ne->host->is_irm || ne->generation != generation || |
| 1417 | ne->nodeid == ne->host->node_id) |
| 1418 | return; |
| 1419 | |
| 1420 | bc_local = cpu_to_be32(ne->host->csr.broadcast_channel); |
| 1421 | |
| 1422 | /* Check if the register is implemented and 1394a compliant. */ |
| 1423 | ret = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote, |
| 1424 | sizeof(bc_remote)); |
| 1425 | if (!ret && bc_remote & cpu_to_be32(0x80000000) && |
| 1426 | bc_remote != bc_local) |
| 1427 | hpsb_node_write(ne, bc_addr, &bc_local, sizeof(bc_local)); |
| 1428 | } |
| 1429 | |
| 1430 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | static void nodemgr_probe_ne(struct host_info *hi, struct node_entry *ne, int generation) |
| 1432 | { |
| 1433 | struct device *dev; |
| 1434 | |
| 1435 | if (ne->host != hi->host || ne->in_limbo) |
| 1436 | return; |
| 1437 | |
| 1438 | dev = get_device(&ne->device); |
| 1439 | if (!dev) |
| 1440 | return; |
| 1441 | |
Stefan Richter | 61c7f77 | 2005-12-05 16:28:59 -0500 | [diff] [blame] | 1442 | nodemgr_irm_write_bc(ne, generation); |
| 1443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | /* If "needs_probe", then this is either a new or changed node we |
| 1445 | * rescan totally. If the generation matches for an existing node |
| 1446 | * (one that existed prior to the bus reset) we send update calls |
| 1447 | * down to the drivers. Otherwise, this is a dead node and we |
| 1448 | * suspend it. */ |
| 1449 | if (ne->needs_probe) |
| 1450 | nodemgr_process_root_directory(hi, ne); |
| 1451 | else if (ne->generation == generation) |
| 1452 | nodemgr_update_pdrv(ne); |
| 1453 | else |
| 1454 | nodemgr_suspend_ne(ne); |
| 1455 | |
| 1456 | put_device(dev); |
| 1457 | } |
| 1458 | |
| 1459 | |
| 1460 | static void nodemgr_node_probe(struct host_info *hi, int generation) |
| 1461 | { |
| 1462 | struct hpsb_host *host = hi->host; |
| 1463 | struct class *class = &nodemgr_ne_class; |
| 1464 | struct class_device *cdev; |
Stefan Richter | 51c1d80 | 2005-12-12 23:03:19 -0500 | [diff] [blame] | 1465 | struct node_entry *ne; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1466 | |
| 1467 | /* Do some processing of the nodes we've probed. This pulls them |
| 1468 | * into the sysfs layer if needed, and can result in processing of |
| 1469 | * unit-directories, or just updating the node and it's |
Stefan Richter | 51c1d80 | 2005-12-12 23:03:19 -0500 | [diff] [blame] | 1470 | * unit-directories. |
| 1471 | * |
| 1472 | * Run updates before probes. Usually, updates are time-critical |
| 1473 | * while probes are time-consuming. (Well, those probes need some |
| 1474 | * improvement...) */ |
| 1475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | down_read(&class->subsys.rwsem); |
Stefan Richter | 51c1d80 | 2005-12-12 23:03:19 -0500 | [diff] [blame] | 1477 | list_for_each_entry(cdev, &class->children, node) { |
| 1478 | ne = container_of(cdev, struct node_entry, class_dev); |
| 1479 | if (!ne->needs_probe) |
| 1480 | nodemgr_probe_ne(hi, ne, generation); |
| 1481 | } |
| 1482 | list_for_each_entry(cdev, &class->children, node) { |
| 1483 | ne = container_of(cdev, struct node_entry, class_dev); |
| 1484 | if (ne->needs_probe) |
| 1485 | nodemgr_probe_ne(hi, ne, generation); |
| 1486 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | up_read(&class->subsys.rwsem); |
| 1488 | |
| 1489 | |
| 1490 | /* If we had a bus reset while we were scanning the bus, it is |
| 1491 | * possible that we did not probe all nodes. In that case, we |
| 1492 | * skip the clean up for now, since we could remove nodes that |
| 1493 | * were still on the bus. The bus reset increased hi->reset_sem, |
| 1494 | * so there's a bus scan pending which will do the clean up |
| 1495 | * eventually. |
| 1496 | * |
| 1497 | * Now let's tell the bus to rescan our devices. This may seem |
| 1498 | * like overhead, but the driver-model core will only scan a |
| 1499 | * device for a driver when either the device is added, or when a |
| 1500 | * new driver is added. A bus reset is a good reason to rescan |
| 1501 | * devices that were there before. For example, an sbp2 device |
| 1502 | * may become available for login, if the host that held it was |
| 1503 | * just removed. */ |
| 1504 | |
| 1505 | if (generation == get_hpsb_generation(host)) |
| 1506 | bus_rescan_devices(&ieee1394_bus_type); |
| 1507 | |
| 1508 | return; |
| 1509 | } |
| 1510 | |
Stefan Richter | 14c0fa2 | 2005-12-01 18:51:52 -0500 | [diff] [blame] | 1511 | static int nodemgr_send_resume_packet(struct hpsb_host *host) |
| 1512 | { |
| 1513 | struct hpsb_packet *packet; |
| 1514 | int ret = 1; |
| 1515 | |
| 1516 | packet = hpsb_make_phypacket(host, |
Stefan Richter | d775846 | 2005-12-01 18:51:56 -0500 | [diff] [blame] | 1517 | EXTPHYPACKET_TYPE_RESUME | |
| 1518 | NODEID_TO_NODE(host->node_id) << PHYPACKET_PORT_SHIFT); |
Stefan Richter | 14c0fa2 | 2005-12-01 18:51:52 -0500 | [diff] [blame] | 1519 | if (packet) { |
| 1520 | packet->no_waiter = 1; |
| 1521 | packet->generation = get_hpsb_generation(host); |
| 1522 | ret = hpsb_send_packet(packet); |
| 1523 | } |
| 1524 | if (ret) |
| 1525 | HPSB_WARN("fw-host%d: Failed to broadcast resume packet", |
| 1526 | host->id); |
| 1527 | return ret; |
| 1528 | } |
| 1529 | |
Stefan Richter | 61c7f77 | 2005-12-05 16:28:59 -0500 | [diff] [blame] | 1530 | /* Perform a few high-level IRM responsibilities. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | static int nodemgr_do_irm_duties(struct hpsb_host *host, int cycles) |
| 1532 | { |
| 1533 | quadlet_t bc; |
| 1534 | |
| 1535 | /* if irm_id == -1 then there is no IRM on this bus */ |
| 1536 | if (!host->is_irm || host->irm_id == (nodeid_t)-1) |
| 1537 | return 1; |
| 1538 | |
Stefan Richter | 61c7f77 | 2005-12-05 16:28:59 -0500 | [diff] [blame] | 1539 | /* We are a 1394a-2000 compliant IRM. Set the validity bit. */ |
| 1540 | host->csr.broadcast_channel |= 0x40000000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | |
| 1542 | /* If there is no bus manager then we should set the root node's |
| 1543 | * force_root bit to promote bus stability per the 1394 |
| 1544 | * spec. (8.4.2.6) */ |
| 1545 | if (host->busmgr_id == 0xffff && host->node_count > 1) |
| 1546 | { |
| 1547 | u16 root_node = host->node_count - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | |
Jody McIntyre | 328699b | 2005-09-30 11:59:08 -0700 | [diff] [blame] | 1549 | /* get cycle master capability flag from root node */ |
| 1550 | if (host->is_cycmst || |
| 1551 | (!hpsb_read(host, LOCAL_BUS | root_node, get_hpsb_generation(host), |
| 1552 | (CSR_REGISTER_BASE + CSR_CONFIG_ROM + 2 * sizeof(quadlet_t)), |
| 1553 | &bc, sizeof(quadlet_t)) && |
| 1554 | be32_to_cpu(bc) & 1 << CSR_CMC_SHIFT)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | hpsb_send_phy_config(host, root_node, -1); |
| 1556 | else { |
| 1557 | HPSB_DEBUG("The root node is not cycle master capable; " |
| 1558 | "selecting a new root node and resetting..."); |
| 1559 | |
| 1560 | if (cycles >= 5) { |
| 1561 | /* Oh screw it! Just leave the bus as it is */ |
| 1562 | HPSB_DEBUG("Stopping reset loop for IRM sanity"); |
| 1563 | return 1; |
| 1564 | } |
| 1565 | |
| 1566 | hpsb_send_phy_config(host, NODEID_TO_NODE(host->node_id), -1); |
| 1567 | hpsb_reset_bus(host, LONG_RESET_FORCE_ROOT); |
| 1568 | |
| 1569 | return 0; |
| 1570 | } |
| 1571 | } |
| 1572 | |
Stefan Richter | 14c0fa2 | 2005-12-01 18:51:52 -0500 | [diff] [blame] | 1573 | /* Some devices suspend their ports while being connected to an inactive |
| 1574 | * host adapter, i.e. if connected before the low-level driver is |
| 1575 | * loaded. They become visible either when physically unplugged and |
| 1576 | * replugged, or when receiving a resume packet. Send one once. */ |
| 1577 | if (!host->resume_packet_sent && !nodemgr_send_resume_packet(host)) |
| 1578 | host->resume_packet_sent = 1; |
| 1579 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | return 1; |
| 1581 | } |
| 1582 | |
| 1583 | /* We need to ensure that if we are not the IRM, that the IRM node is capable of |
| 1584 | * everything we can do, otherwise issue a bus reset and try to become the IRM |
| 1585 | * ourselves. */ |
| 1586 | static int nodemgr_check_irm_capability(struct hpsb_host *host, int cycles) |
| 1587 | { |
| 1588 | quadlet_t bc; |
| 1589 | int status; |
| 1590 | |
| 1591 | if (hpsb_disable_irm || host->is_irm) |
| 1592 | return 1; |
| 1593 | |
| 1594 | status = hpsb_read(host, LOCAL_BUS | (host->irm_id), |
| 1595 | get_hpsb_generation(host), |
| 1596 | (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL), |
| 1597 | &bc, sizeof(quadlet_t)); |
| 1598 | |
| 1599 | if (status < 0 || !(be32_to_cpu(bc) & 0x80000000)) { |
| 1600 | /* The current irm node does not have a valid BROADCAST_CHANNEL |
| 1601 | * register and we do, so reset the bus with force_root set */ |
| 1602 | HPSB_DEBUG("Current remote IRM is not 1394a-2000 compliant, resetting..."); |
| 1603 | |
| 1604 | if (cycles >= 5) { |
| 1605 | /* Oh screw it! Just leave the bus as it is */ |
| 1606 | HPSB_DEBUG("Stopping reset loop for IRM sanity"); |
| 1607 | return 1; |
| 1608 | } |
| 1609 | |
| 1610 | hpsb_send_phy_config(host, NODEID_TO_NODE(host->node_id), -1); |
| 1611 | hpsb_reset_bus(host, LONG_RESET_FORCE_ROOT); |
| 1612 | |
| 1613 | return 0; |
| 1614 | } |
| 1615 | |
| 1616 | return 1; |
| 1617 | } |
| 1618 | |
| 1619 | static int nodemgr_host_thread(void *__hi) |
| 1620 | { |
| 1621 | struct host_info *hi = (struct host_info *)__hi; |
| 1622 | struct hpsb_host *host = hi->host; |
| 1623 | int reset_cycles = 0; |
| 1624 | |
| 1625 | /* No userlevel access needed */ |
| 1626 | daemonize(hi->daemon_name); |
| 1627 | |
| 1628 | /* Setup our device-model entries */ |
| 1629 | nodemgr_create_host_dev_files(host); |
| 1630 | |
| 1631 | /* Sit and wait for a signal to probe the nodes on the bus. This |
| 1632 | * happens when we get a bus reset. */ |
| 1633 | while (1) { |
| 1634 | unsigned int generation = 0; |
| 1635 | int i; |
| 1636 | |
| 1637 | if (down_interruptible(&hi->reset_sem) || |
| 1638 | down_interruptible(&nodemgr_serialize)) { |
Christoph Lameter | 3e1d1d2 | 2005-06-24 23:13:50 -0700 | [diff] [blame] | 1639 | if (try_to_freeze()) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1640 | continue; |
| 1641 | printk("NodeMgr: received unexpected signal?!\n" ); |
| 1642 | break; |
| 1643 | } |
| 1644 | |
| 1645 | if (hi->kill_me) { |
| 1646 | up(&nodemgr_serialize); |
| 1647 | break; |
| 1648 | } |
| 1649 | |
| 1650 | /* Pause for 1/4 second in 1/16 second intervals, |
| 1651 | * to make sure things settle down. */ |
| 1652 | for (i = 0; i < 4 ; i++) { |
| 1653 | set_current_state(TASK_INTERRUPTIBLE); |
| 1654 | if (msleep_interruptible(63)) { |
| 1655 | up(&nodemgr_serialize); |
| 1656 | goto caught_signal; |
| 1657 | } |
| 1658 | |
| 1659 | /* Now get the generation in which the node ID's we collect |
| 1660 | * are valid. During the bus scan we will use this generation |
| 1661 | * for the read transactions, so that if another reset occurs |
| 1662 | * during the scan the transactions will fail instead of |
| 1663 | * returning bogus data. */ |
| 1664 | generation = get_hpsb_generation(host); |
| 1665 | |
| 1666 | /* If we get a reset before we are done waiting, then |
| 1667 | * start the the waiting over again */ |
| 1668 | while (!down_trylock(&hi->reset_sem)) |
| 1669 | i = 0; |
| 1670 | |
| 1671 | /* Check the kill_me again */ |
| 1672 | if (hi->kill_me) { |
| 1673 | up(&nodemgr_serialize); |
| 1674 | goto caught_signal; |
| 1675 | } |
| 1676 | } |
| 1677 | |
Jody McIntyre | 328699b | 2005-09-30 11:59:08 -0700 | [diff] [blame] | 1678 | if (!nodemgr_check_irm_capability(host, reset_cycles) || |
| 1679 | !nodemgr_do_irm_duties(host, reset_cycles)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | reset_cycles++; |
| 1681 | up(&nodemgr_serialize); |
| 1682 | continue; |
| 1683 | } |
Jody McIntyre | 328699b | 2005-09-30 11:59:08 -0700 | [diff] [blame] | 1684 | reset_cycles = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1685 | |
| 1686 | /* Scan our nodes to get the bus options and create node |
| 1687 | * entries. This does not do the sysfs stuff, since that |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 1688 | * would trigger uevents and such, which is a bad idea at |
| 1689 | * this point. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | nodemgr_node_scan(hi, generation); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | |
| 1692 | /* This actually does the full probe, with sysfs |
| 1693 | * registration. */ |
| 1694 | nodemgr_node_probe(hi, generation); |
| 1695 | |
| 1696 | /* Update some of our sysfs symlinks */ |
| 1697 | nodemgr_update_host_dev_links(host); |
| 1698 | |
| 1699 | up(&nodemgr_serialize); |
| 1700 | } |
| 1701 | |
| 1702 | caught_signal: |
| 1703 | HPSB_VERBOSE("NodeMgr: Exiting thread"); |
| 1704 | |
| 1705 | complete_and_exit(&hi->exited, 0); |
| 1706 | } |
| 1707 | |
| 1708 | int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *)) |
| 1709 | { |
| 1710 | struct class *class = &hpsb_host_class; |
| 1711 | struct class_device *cdev; |
| 1712 | struct hpsb_host *host; |
| 1713 | int error = 0; |
| 1714 | |
| 1715 | down_read(&class->subsys.rwsem); |
| 1716 | list_for_each_entry(cdev, &class->children, node) { |
| 1717 | host = container_of(cdev, struct hpsb_host, class_dev); |
| 1718 | |
| 1719 | if ((error = cb(host, __data))) |
| 1720 | break; |
| 1721 | } |
| 1722 | up_read(&class->subsys.rwsem); |
| 1723 | |
| 1724 | return error; |
| 1725 | } |
| 1726 | |
| 1727 | /* The following four convenience functions use a struct node_entry |
| 1728 | * for addressing a node on the bus. They are intended for use by any |
| 1729 | * process context, not just the nodemgr thread, so we need to be a |
| 1730 | * little careful when reading out the node ID and generation. The |
| 1731 | * thing that can go wrong is that we get the node ID, then a bus |
| 1732 | * reset occurs, and then we read the generation. The node ID is |
| 1733 | * possibly invalid, but the generation is current, and we end up |
| 1734 | * sending a packet to a the wrong node. |
| 1735 | * |
| 1736 | * The solution is to make sure we read the generation first, so that |
| 1737 | * if a reset occurs in the process, we end up with a stale generation |
| 1738 | * and the transactions will fail instead of silently using wrong node |
| 1739 | * ID's. |
| 1740 | */ |
| 1741 | |
| 1742 | void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt) |
| 1743 | { |
| 1744 | pkt->host = ne->host; |
| 1745 | pkt->generation = ne->generation; |
| 1746 | barrier(); |
| 1747 | pkt->node_id = ne->nodeid; |
| 1748 | } |
| 1749 | |
| 1750 | int hpsb_node_write(struct node_entry *ne, u64 addr, |
| 1751 | quadlet_t *buffer, size_t length) |
| 1752 | { |
| 1753 | unsigned int generation = ne->generation; |
| 1754 | |
| 1755 | barrier(); |
| 1756 | return hpsb_write(ne->host, ne->nodeid, generation, |
| 1757 | addr, buffer, length); |
| 1758 | } |
| 1759 | |
| 1760 | static void nodemgr_add_host(struct hpsb_host *host) |
| 1761 | { |
| 1762 | struct host_info *hi; |
| 1763 | |
| 1764 | hi = hpsb_create_hostinfo(&nodemgr_highlevel, host, sizeof(*hi)); |
| 1765 | |
| 1766 | if (!hi) { |
| 1767 | HPSB_ERR ("NodeMgr: out of memory in add host"); |
| 1768 | return; |
| 1769 | } |
| 1770 | |
| 1771 | hi->host = host; |
| 1772 | init_completion(&hi->exited); |
| 1773 | sema_init(&hi->reset_sem, 0); |
| 1774 | |
| 1775 | sprintf(hi->daemon_name, "knodemgrd_%d", host->id); |
| 1776 | |
| 1777 | hi->pid = kernel_thread(nodemgr_host_thread, hi, CLONE_KERNEL); |
| 1778 | |
| 1779 | if (hi->pid < 0) { |
| 1780 | HPSB_ERR ("NodeMgr: failed to start %s thread for %s", |
| 1781 | hi->daemon_name, host->driver->name); |
| 1782 | hpsb_destroy_hostinfo(&nodemgr_highlevel, host); |
| 1783 | return; |
| 1784 | } |
| 1785 | |
| 1786 | return; |
| 1787 | } |
| 1788 | |
| 1789 | static void nodemgr_host_reset(struct hpsb_host *host) |
| 1790 | { |
| 1791 | struct host_info *hi = hpsb_get_hostinfo(&nodemgr_highlevel, host); |
| 1792 | |
| 1793 | if (hi != NULL) { |
| 1794 | HPSB_VERBOSE("NodeMgr: Processing host reset for %s", hi->daemon_name); |
| 1795 | up(&hi->reset_sem); |
| 1796 | } else |
| 1797 | HPSB_ERR ("NodeMgr: could not process reset of unused host"); |
| 1798 | |
| 1799 | return; |
| 1800 | } |
| 1801 | |
| 1802 | static void nodemgr_remove_host(struct hpsb_host *host) |
| 1803 | { |
| 1804 | struct host_info *hi = hpsb_get_hostinfo(&nodemgr_highlevel, host); |
| 1805 | |
| 1806 | if (hi) { |
| 1807 | if (hi->pid >= 0) { |
| 1808 | hi->kill_me = 1; |
| 1809 | mb(); |
| 1810 | up(&hi->reset_sem); |
| 1811 | wait_for_completion(&hi->exited); |
| 1812 | nodemgr_remove_host_dev(&host->device); |
| 1813 | } |
| 1814 | } else |
| 1815 | HPSB_ERR("NodeMgr: host %s does not exist, cannot remove", |
| 1816 | host->driver->name); |
| 1817 | |
| 1818 | return; |
| 1819 | } |
| 1820 | |
| 1821 | static struct hpsb_highlevel nodemgr_highlevel = { |
| 1822 | .name = "Node manager", |
| 1823 | .add_host = nodemgr_add_host, |
| 1824 | .host_reset = nodemgr_host_reset, |
| 1825 | .remove_host = nodemgr_remove_host, |
| 1826 | }; |
| 1827 | |
| 1828 | int init_ieee1394_nodemgr(void) |
| 1829 | { |
| 1830 | int ret; |
| 1831 | |
| 1832 | ret = class_register(&nodemgr_ne_class); |
| 1833 | if (ret < 0) |
| 1834 | return ret; |
| 1835 | |
| 1836 | ret = class_register(&nodemgr_ud_class); |
| 1837 | if (ret < 0) { |
| 1838 | class_unregister(&nodemgr_ne_class); |
| 1839 | return ret; |
| 1840 | } |
| 1841 | |
| 1842 | hpsb_register_highlevel(&nodemgr_highlevel); |
| 1843 | |
| 1844 | return 0; |
| 1845 | } |
| 1846 | |
| 1847 | void cleanup_ieee1394_nodemgr(void) |
| 1848 | { |
| 1849 | hpsb_unregister_highlevel(&nodemgr_highlevel); |
| 1850 | |
| 1851 | class_unregister(&nodemgr_ud_class); |
| 1852 | class_unregister(&nodemgr_ne_class); |
| 1853 | } |