Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IEEE 1394 for Linux |
| 3 | * |
| 4 | * Copyright (C) 1999 Andreas E. Bombe |
| 5 | * |
| 6 | * This code is licensed under the GPL. See the file COPYING in the root |
| 7 | * directory of the kernel sources for details. |
| 8 | * |
| 9 | * |
| 10 | * Contributions: |
| 11 | * |
| 12 | * Christian Toegel <christian.toegel@gmx.at> |
| 13 | * unregister address space |
| 14 | * |
| 15 | * Manfred Weihs <weihs@ict.tuwien.ac.at> |
| 16 | * unregister address space |
| 17 | * |
| 18 | */ |
| 19 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | #include <linux/slab.h> |
| 21 | #include <linux/list.h> |
| 22 | #include <linux/bitops.h> |
| 23 | |
| 24 | #include "ieee1394.h" |
| 25 | #include "ieee1394_types.h" |
| 26 | #include "hosts.h" |
| 27 | #include "ieee1394_core.h" |
| 28 | #include "highlevel.h" |
| 29 | #include "nodemgr.h" |
| 30 | |
| 31 | |
| 32 | struct hl_host_info { |
| 33 | struct list_head list; |
| 34 | struct hpsb_host *host; |
| 35 | size_t size; |
| 36 | unsigned long key; |
| 37 | void *data; |
| 38 | }; |
| 39 | |
| 40 | |
| 41 | static LIST_HEAD(hl_drivers); |
| 42 | static DECLARE_RWSEM(hl_drivers_sem); |
| 43 | |
| 44 | static LIST_HEAD(hl_irqs); |
| 45 | static DEFINE_RWLOCK(hl_irqs_lock); |
| 46 | |
| 47 | static DEFINE_RWLOCK(addr_space_lock); |
| 48 | |
| 49 | /* addr_space list will have zero and max already included as bounds */ |
| 50 | static struct hpsb_address_ops dummy_ops = { NULL, NULL, NULL, NULL }; |
| 51 | static struct hpsb_address_serve dummy_zero_addr, dummy_max_addr; |
| 52 | |
| 53 | |
| 54 | static struct hl_host_info *hl_get_hostinfo(struct hpsb_highlevel *hl, |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 55 | struct hpsb_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
| 57 | struct hl_host_info *hi = NULL; |
| 58 | |
| 59 | if (!hl || !host) |
| 60 | return NULL; |
| 61 | |
| 62 | read_lock(&hl->host_info_lock); |
| 63 | list_for_each_entry(hi, &hl->host_info_list, list) { |
| 64 | if (hi->host == host) { |
| 65 | read_unlock(&hl->host_info_lock); |
| 66 | return hi; |
| 67 | } |
| 68 | } |
| 69 | read_unlock(&hl->host_info_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | return NULL; |
| 71 | } |
| 72 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 73 | /** |
| 74 | * hpsb_get_hostinfo - retrieve a hostinfo pointer bound to this driver/host |
| 75 | * |
| 76 | * Returns a per @host and @hl driver data structure that was previously stored |
| 77 | * by hpsb_create_hostinfo. |
| 78 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host) |
| 80 | { |
| 81 | struct hl_host_info *hi = hl_get_hostinfo(hl, host); |
| 82 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 83 | return hi ? hi->data : NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | } |
| 85 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 86 | /** |
| 87 | * hpsb_create_hostinfo - allocate a hostinfo pointer bound to this driver/host |
| 88 | * |
| 89 | * Allocate a hostinfo pointer backed by memory with @data_size and bind it to |
| 90 | * to this @hl driver and @host. If @data_size is zero, then the return here is |
| 91 | * only valid for error checking. |
| 92 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, |
| 94 | size_t data_size) |
| 95 | { |
| 96 | struct hl_host_info *hi; |
| 97 | void *data; |
| 98 | unsigned long flags; |
| 99 | |
| 100 | hi = hl_get_hostinfo(hl, host); |
| 101 | if (hi) { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 102 | HPSB_ERR("%s called hpsb_create_hostinfo when hostinfo already" |
| 103 | " exists", hl->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | return NULL; |
| 105 | } |
| 106 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 107 | hi = kzalloc(sizeof(*hi) + data_size, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | if (!hi) |
| 109 | return NULL; |
| 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | if (data_size) { |
| 112 | data = hi->data = hi + 1; |
| 113 | hi->size = data_size; |
| 114 | } else |
| 115 | data = hi; |
| 116 | |
| 117 | hi->host = host; |
| 118 | |
| 119 | write_lock_irqsave(&hl->host_info_lock, flags); |
| 120 | list_add_tail(&hi->list, &hl->host_info_list); |
| 121 | write_unlock_irqrestore(&hl->host_info_lock, flags); |
| 122 | |
| 123 | return data; |
| 124 | } |
| 125 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 126 | /** |
| 127 | * hpsb_set_hostinfo - set the hostinfo pointer to something useful |
| 128 | * |
| 129 | * Usually follows a call to hpsb_create_hostinfo, where the size is 0. |
| 130 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host, |
| 132 | void *data) |
| 133 | { |
| 134 | struct hl_host_info *hi; |
| 135 | |
| 136 | hi = hl_get_hostinfo(hl, host); |
| 137 | if (hi) { |
| 138 | if (!hi->size && !hi->data) { |
| 139 | hi->data = data; |
| 140 | return 0; |
| 141 | } else |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 142 | HPSB_ERR("%s called hpsb_set_hostinfo when hostinfo " |
| 143 | "already has data", hl->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } else |
| 145 | HPSB_ERR("%s called hpsb_set_hostinfo when no hostinfo exists", |
| 146 | hl->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | return -EINVAL; |
| 148 | } |
| 149 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 150 | /** |
| 151 | * hpsb_destroy_hostinfo - free and remove a hostinfo pointer |
| 152 | * |
| 153 | * Free and remove the hostinfo pointer bound to this @hl driver and @host. |
| 154 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host) |
| 156 | { |
| 157 | struct hl_host_info *hi; |
| 158 | |
| 159 | hi = hl_get_hostinfo(hl, host); |
| 160 | if (hi) { |
| 161 | unsigned long flags; |
| 162 | write_lock_irqsave(&hl->host_info_lock, flags); |
| 163 | list_del(&hi->list); |
| 164 | write_unlock_irqrestore(&hl->host_info_lock, flags); |
| 165 | kfree(hi); |
| 166 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | return; |
| 168 | } |
| 169 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 170 | /** |
| 171 | * hpsb_set_hostinfo_key - set an alternate lookup key for an hostinfo |
| 172 | * |
| 173 | * Sets an alternate lookup key for the hostinfo bound to this @hl driver and |
| 174 | * @host. |
| 175 | */ |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 176 | void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host, |
| 177 | unsigned long key) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | { |
| 179 | struct hl_host_info *hi; |
| 180 | |
| 181 | hi = hl_get_hostinfo(hl, host); |
| 182 | if (hi) |
| 183 | hi->key = key; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | return; |
| 185 | } |
| 186 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 187 | /** |
| 188 | * hpsb_get_hostinfo_bykey - retrieve a hostinfo pointer by its alternate key |
| 189 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key) |
| 191 | { |
| 192 | struct hl_host_info *hi; |
| 193 | void *data = NULL; |
| 194 | |
| 195 | if (!hl) |
| 196 | return NULL; |
| 197 | |
| 198 | read_lock(&hl->host_info_lock); |
| 199 | list_for_each_entry(hi, &hl->host_info_list, list) { |
| 200 | if (hi->key == key) { |
| 201 | data = hi->data; |
| 202 | break; |
| 203 | } |
| 204 | } |
| 205 | read_unlock(&hl->host_info_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | return data; |
| 207 | } |
| 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | static int highlevel_for_each_host_reg(struct hpsb_host *host, void *__data) |
| 210 | { |
| 211 | struct hpsb_highlevel *hl = __data; |
| 212 | |
| 213 | hl->add_host(host); |
| 214 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 215 | if (host->update_config_rom && hpsb_update_config_rom_image(host) < 0) |
| 216 | HPSB_ERR("Failed to generate Configuration ROM image for host " |
| 217 | "%s-%d", hl->name, host->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | return 0; |
| 219 | } |
| 220 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 221 | /** |
| 222 | * hpsb_register_highlevel - register highlevel driver |
| 223 | * |
| 224 | * The name pointer in @hl has to stay valid at all times because the string is |
| 225 | * not copied. |
| 226 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | void hpsb_register_highlevel(struct hpsb_highlevel *hl) |
| 228 | { |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 229 | unsigned long flags; |
| 230 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 231 | INIT_LIST_HEAD(&hl->addr_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | INIT_LIST_HEAD(&hl->host_info_list); |
| 233 | |
| 234 | rwlock_init(&hl->host_info_lock); |
| 235 | |
| 236 | down_write(&hl_drivers_sem); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 237 | list_add_tail(&hl->hl_list, &hl_drivers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | up_write(&hl_drivers_sem); |
| 239 | |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 240 | write_lock_irqsave(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | list_add_tail(&hl->irq_list, &hl_irqs); |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 242 | write_unlock_irqrestore(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
| 244 | if (hl->add_host) |
| 245 | nodemgr_for_each_host(hl, highlevel_for_each_host_reg); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 246 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | } |
| 248 | |
| 249 | static void __delete_addr(struct hpsb_address_serve *as) |
| 250 | { |
| 251 | list_del(&as->host_list); |
| 252 | list_del(&as->hl_list); |
| 253 | kfree(as); |
| 254 | } |
| 255 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 256 | static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host, |
| 257 | int update_cr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | { |
| 259 | unsigned long flags; |
| 260 | struct list_head *lh, *next; |
| 261 | struct hpsb_address_serve *as; |
| 262 | |
| 263 | /* First, let the highlevel driver unreg */ |
| 264 | if (hl->remove_host) |
| 265 | hl->remove_host(host); |
| 266 | |
| 267 | /* Remove any addresses that are matched for this highlevel driver |
| 268 | * and this particular host. */ |
| 269 | write_lock_irqsave(&addr_space_lock, flags); |
| 270 | list_for_each_safe (lh, next, &hl->addr_list) { |
| 271 | as = list_entry(lh, struct hpsb_address_serve, hl_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | if (as->host == host) |
| 273 | __delete_addr(as); |
| 274 | } |
| 275 | write_unlock_irqrestore(&addr_space_lock, flags); |
| 276 | |
| 277 | /* Now update the config-rom to reflect anything removed by the |
| 278 | * highlevel driver. */ |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 279 | if (update_cr && host->update_config_rom && |
| 280 | hpsb_update_config_rom_image(host) < 0) |
| 281 | HPSB_ERR("Failed to generate Configuration ROM image for host " |
| 282 | "%s-%d", hl->name, host->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 284 | /* Finally remove all the host info associated between these two. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | hpsb_destroy_hostinfo(hl, host); |
| 286 | } |
| 287 | |
| 288 | static int highlevel_for_each_host_unreg(struct hpsb_host *host, void *__data) |
| 289 | { |
| 290 | struct hpsb_highlevel *hl = __data; |
| 291 | |
| 292 | __unregister_host(hl, host, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | return 0; |
| 294 | } |
| 295 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 296 | /** |
| 297 | * hpsb_unregister_highlevel - unregister highlevel driver |
| 298 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | void hpsb_unregister_highlevel(struct hpsb_highlevel *hl) |
| 300 | { |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 301 | unsigned long flags; |
| 302 | |
| 303 | write_lock_irqsave(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | list_del(&hl->irq_list); |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 305 | write_unlock_irqrestore(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
| 307 | down_write(&hl_drivers_sem); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 308 | list_del(&hl->hl_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | up_write(&hl_drivers_sem); |
| 310 | |
| 311 | nodemgr_for_each_host(hl, highlevel_for_each_host_unreg); |
| 312 | } |
| 313 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 314 | /** |
| 315 | * hpsb_allocate_and_register_addrspace - alloc' and reg' a host address space |
| 316 | * |
| 317 | * @start and @end are 48 bit pointers and have to be quadlet aligned. |
| 318 | * @end points to the first address behind the handled addresses. This |
| 319 | * function can be called multiple times for a single hpsb_highlevel @hl to |
| 320 | * implement sparse register sets. The requested region must not overlap any |
| 321 | * previously allocated region, otherwise registering will fail. |
| 322 | * |
| 323 | * It returns true for successful allocation. Address spaces can be |
| 324 | * unregistered with hpsb_unregister_addrspace. All remaining address spaces |
| 325 | * are automatically deallocated together with the hpsb_highlevel @hl. |
| 326 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl, |
| 328 | struct hpsb_host *host, |
| 329 | struct hpsb_address_ops *ops, |
| 330 | u64 size, u64 alignment, |
| 331 | u64 start, u64 end) |
| 332 | { |
| 333 | struct hpsb_address_serve *as, *a1, *a2; |
| 334 | struct list_head *entry; |
Ben Collins | 6737231 | 2006-06-12 18:15:31 -0400 | [diff] [blame] | 335 | u64 retval = CSR1212_INVALID_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | unsigned long flags; |
| 337 | u64 align_mask = ~(alignment - 1); |
| 338 | |
| 339 | if ((alignment & 3) || (alignment > 0x800000000000ULL) || |
Akinobu Mita | 37d5411 | 2006-03-26 01:39:56 -0800 | [diff] [blame] | 340 | (hweight64(alignment) != 1)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | HPSB_ERR("%s called with invalid alignment: 0x%048llx", |
| 342 | __FUNCTION__, (unsigned long long)alignment); |
| 343 | return retval; |
| 344 | } |
| 345 | |
Ben Collins | 8aef63f | 2006-06-12 18:13:21 -0400 | [diff] [blame] | 346 | /* default range, |
| 347 | * avoids controller's posted write area (see OHCI 1.1 clause 1.5) */ |
Ben Collins | 6737231 | 2006-06-12 18:15:31 -0400 | [diff] [blame] | 348 | if (start == CSR1212_INVALID_ADDR_SPACE && |
| 349 | end == CSR1212_INVALID_ADDR_SPACE) { |
Ben Collins | 8aef63f | 2006-06-12 18:13:21 -0400 | [diff] [blame] | 350 | start = host->middle_addr_space; |
Ben Collins | 6737231 | 2006-06-12 18:15:31 -0400 | [diff] [blame] | 351 | end = CSR1212_ALL_SPACE_END; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | } |
| 353 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 354 | if (((start|end) & ~align_mask) || (start >= end) || |
| 355 | (end > CSR1212_ALL_SPACE_END)) { |
| 356 | HPSB_ERR("%s called with invalid addresses " |
| 357 | "(start = %012Lx end = %012Lx)", __FUNCTION__, |
| 358 | (unsigned long long)start,(unsigned long long)end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | return retval; |
| 360 | } |
| 361 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 362 | as = kmalloc(sizeof(*as), GFP_KERNEL); |
| 363 | if (!as) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | |
| 366 | INIT_LIST_HEAD(&as->host_list); |
| 367 | INIT_LIST_HEAD(&as->hl_list); |
| 368 | as->op = ops; |
| 369 | as->host = host; |
| 370 | |
| 371 | write_lock_irqsave(&addr_space_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | list_for_each(entry, &host->addr_space) { |
| 373 | u64 a1sa, a1ea; |
| 374 | u64 a2sa, a2ea; |
| 375 | |
| 376 | a1 = list_entry(entry, struct hpsb_address_serve, host_list); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 377 | a2 = list_entry(entry->next, struct hpsb_address_serve, |
| 378 | host_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
| 380 | a1sa = a1->start & align_mask; |
| 381 | a1ea = (a1->end + alignment -1) & align_mask; |
| 382 | a2sa = a2->start & align_mask; |
| 383 | a2ea = (a2->end + alignment -1) & align_mask; |
| 384 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 385 | if ((a2sa - a1ea >= size) && (a2sa - start >= size) && |
| 386 | (a2sa > start)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | as->start = max(start, a1ea); |
| 388 | as->end = as->start + size; |
| 389 | list_add(&as->host_list, entry); |
| 390 | list_add_tail(&as->hl_list, &hl->addr_list); |
| 391 | retval = as->start; |
| 392 | break; |
| 393 | } |
| 394 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | write_unlock_irqrestore(&addr_space_lock, flags); |
| 396 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 397 | if (retval == CSR1212_INVALID_ADDR_SPACE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | kfree(as); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | return retval; |
| 400 | } |
| 401 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 402 | /** |
| 403 | * hpsb_register_addrspace - register a host address space |
| 404 | * |
| 405 | * @start and @end are 48 bit pointers and have to be quadlet aligned. |
| 406 | * @end points to the first address behind the handled addresses. This |
| 407 | * function can be called multiple times for a single hpsb_highlevel @hl to |
| 408 | * implement sparse register sets. The requested region must not overlap any |
| 409 | * previously allocated region, otherwise registering will fail. |
| 410 | * |
| 411 | * It returns true for successful allocation. Address spaces can be |
| 412 | * unregistered with hpsb_unregister_addrspace. All remaining address spaces |
| 413 | * are automatically deallocated together with the hpsb_highlevel @hl. |
| 414 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host, |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 416 | struct hpsb_address_ops *ops, u64 start, u64 end) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 418 | struct hpsb_address_serve *as; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | struct list_head *lh; |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 420 | int retval = 0; |
| 421 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 423 | if (((start|end) & 3) || (start >= end) || |
| 424 | (end > CSR1212_ALL_SPACE_END)) { |
| 425 | HPSB_ERR("%s called with invalid addresses", __FUNCTION__); |
| 426 | return 0; |
| 427 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | |
Stefan Richter | 8551158 | 2005-11-07 06:31:45 -0500 | [diff] [blame] | 429 | as = kmalloc(sizeof(*as), GFP_ATOMIC); |
| 430 | if (!as) |
| 431 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 433 | INIT_LIST_HEAD(&as->host_list); |
| 434 | INIT_LIST_HEAD(&as->hl_list); |
| 435 | as->op = ops; |
| 436 | as->start = start; |
| 437 | as->end = end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | as->host = host; |
| 439 | |
| 440 | write_lock_irqsave(&addr_space_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | list_for_each(lh, &host->addr_space) { |
| 442 | struct hpsb_address_serve *as_this = |
| 443 | list_entry(lh, struct hpsb_address_serve, host_list); |
| 444 | struct hpsb_address_serve *as_next = |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 445 | list_entry(lh->next, struct hpsb_address_serve, |
| 446 | host_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | |
| 448 | if (as_this->end > as->start) |
| 449 | break; |
| 450 | |
| 451 | if (as_next->start >= as->end) { |
| 452 | list_add(&as->host_list, lh); |
| 453 | list_add_tail(&as->hl_list, &hl->addr_list); |
| 454 | retval = 1; |
| 455 | break; |
| 456 | } |
| 457 | } |
| 458 | write_unlock_irqrestore(&addr_space_lock, flags); |
| 459 | |
| 460 | if (retval == 0) |
| 461 | kfree(as); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 462 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host, |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 466 | u64 start) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 468 | int retval = 0; |
| 469 | struct hpsb_address_serve *as; |
| 470 | struct list_head *lh, *next; |
| 471 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 473 | write_lock_irqsave(&addr_space_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | list_for_each_safe (lh, next, &hl->addr_list) { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 475 | as = list_entry(lh, struct hpsb_address_serve, hl_list); |
| 476 | if (as->start == start && as->host == host) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | __delete_addr(as); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 478 | retval = 1; |
| 479 | break; |
| 480 | } |
| 481 | } |
| 482 | write_unlock_irqrestore(&addr_space_lock, flags); |
| 483 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | } |
| 485 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 486 | /** |
| 487 | * hpsb_listen_channel - enable receving a certain isochronous channel |
| 488 | * |
| 489 | * Reception is handled through the @hl's iso_receive op. |
| 490 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host, |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 492 | unsigned int channel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 494 | if (channel > 63) { |
| 495 | HPSB_ERR("%s called with invalid channel", __FUNCTION__); |
| 496 | return -EINVAL; |
| 497 | } |
| 498 | if (host->iso_listen_count[channel]++ == 0) |
| 499 | return host->driver->devctl(host, ISO_LISTEN_CHANNEL, channel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | return 0; |
| 501 | } |
| 502 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 503 | /** |
| 504 | * hpsb_unlisten_channel - disable receving a certain isochronous channel |
| 505 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | void hpsb_unlisten_channel(struct hpsb_highlevel *hl, struct hpsb_host *host, |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 507 | unsigned int channel) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 509 | if (channel > 63) { |
| 510 | HPSB_ERR("%s called with invalid channel", __FUNCTION__); |
| 511 | return; |
| 512 | } |
| 513 | if (--host->iso_listen_count[channel] == 0) |
| 514 | host->driver->devctl(host, ISO_UNLISTEN_CHANNEL, channel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | } |
| 516 | |
| 517 | static void init_hpsb_highlevel(struct hpsb_host *host) |
| 518 | { |
| 519 | INIT_LIST_HEAD(&dummy_zero_addr.host_list); |
| 520 | INIT_LIST_HEAD(&dummy_zero_addr.hl_list); |
| 521 | INIT_LIST_HEAD(&dummy_max_addr.host_list); |
| 522 | INIT_LIST_HEAD(&dummy_max_addr.hl_list); |
| 523 | |
| 524 | dummy_zero_addr.op = dummy_max_addr.op = &dummy_ops; |
| 525 | |
| 526 | dummy_zero_addr.start = dummy_zero_addr.end = 0; |
| 527 | dummy_max_addr.start = dummy_max_addr.end = ((u64) 1) << 48; |
| 528 | |
| 529 | list_add_tail(&dummy_zero_addr.host_list, &host->addr_space); |
| 530 | list_add_tail(&dummy_max_addr.host_list, &host->addr_space); |
| 531 | } |
| 532 | |
| 533 | void highlevel_add_host(struct hpsb_host *host) |
| 534 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 535 | struct hpsb_highlevel *hl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | |
| 537 | init_hpsb_highlevel(host); |
| 538 | |
| 539 | down_read(&hl_drivers_sem); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 540 | list_for_each_entry(hl, &hl_drivers, hl_list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | if (hl->add_host) |
| 542 | hl->add_host(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 544 | up_read(&hl_drivers_sem); |
| 545 | if (host->update_config_rom && hpsb_update_config_rom_image(host) < 0) |
| 546 | HPSB_ERR("Failed to generate Configuration ROM image for host " |
| 547 | "%s-%d", hl->name, host->id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | void highlevel_remove_host(struct hpsb_host *host) |
| 551 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 552 | struct hpsb_highlevel *hl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | down_read(&hl_drivers_sem); |
| 555 | list_for_each_entry(hl, &hl_drivers, hl_list) |
| 556 | __unregister_host(hl, host, 0); |
| 557 | up_read(&hl_drivers_sem); |
| 558 | } |
| 559 | |
| 560 | void highlevel_host_reset(struct hpsb_host *host) |
| 561 | { |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 562 | unsigned long flags; |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 563 | struct hpsb_highlevel *hl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 565 | read_lock_irqsave(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | list_for_each_entry(hl, &hl_irqs, irq_list) { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 567 | if (hl->host_reset) |
| 568 | hl->host_reset(host); |
| 569 | } |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 570 | read_unlock_irqrestore(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | } |
| 572 | |
| 573 | void highlevel_iso_receive(struct hpsb_host *host, void *data, size_t length) |
| 574 | { |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 575 | unsigned long flags; |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 576 | struct hpsb_highlevel *hl; |
| 577 | int channel = (((quadlet_t *)data)[0] >> 8) & 0x3f; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 579 | read_lock_irqsave(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | list_for_each_entry(hl, &hl_irqs, irq_list) { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 581 | if (hl->iso_receive) |
| 582 | hl->iso_receive(host, channel, data, length); |
| 583 | } |
| 584 | read_unlock_irqrestore(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction, |
| 588 | void *data, size_t length) |
| 589 | { |
Ben Collins | 4451519 | 2006-06-12 18:16:01 -0400 | [diff] [blame] | 590 | unsigned long flags; |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 591 | struct hpsb_highlevel *hl; |
| 592 | int cts = ((quadlet_t *)data)[0] >> 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 594 | read_lock_irqsave(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | list_for_each_entry(hl, &hl_irqs, irq_list) { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 596 | if (hl->fcp_request) |
| 597 | hl->fcp_request(host, nodeid, direction, cts, data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | length); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 599 | } |
| 600 | read_unlock_irqrestore(&hl_irqs_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | } |
| 602 | |
Stefan Richter | afd6546 | 2007-03-05 03:06:23 +0100 | [diff] [blame] | 603 | /* |
| 604 | * highlevel_read, highlevel_write, highlevel_lock, highlevel_lock64: |
| 605 | * |
| 606 | * These functions are called to handle transactions. They are called when a |
| 607 | * packet arrives. The flags argument contains the second word of the first |
| 608 | * header quadlet of the incoming packet (containing transaction label, retry |
| 609 | * code, transaction code and priority). These functions either return a |
| 610 | * response code or a negative number. In the first case a response will be |
| 611 | * generated. In the latter case, no response will be sent and the driver which |
| 612 | * handled the request will send the response itself. |
| 613 | */ |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 614 | int highlevel_read(struct hpsb_host *host, int nodeid, void *data, u64 addr, |
| 615 | unsigned int length, u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 617 | struct hpsb_address_serve *as; |
| 618 | unsigned int partlength; |
| 619 | int rcode = RCODE_ADDRESS_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 621 | read_lock(&addr_space_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | list_for_each_entry(as, &host->addr_space, host_list) { |
| 623 | if (as->start > addr) |
| 624 | break; |
| 625 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 626 | if (as->end > addr) { |
| 627 | partlength = min(as->end - addr, (u64) length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 629 | if (as->op->read) |
| 630 | rcode = as->op->read(host, nodeid, data, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | addr, partlength, flags); |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 632 | else |
| 633 | rcode = RCODE_TYPE_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
| 635 | data += partlength; |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 636 | length -= partlength; |
| 637 | addr += partlength; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 639 | if ((rcode != RCODE_COMPLETE) || !length) |
| 640 | break; |
| 641 | } |
| 642 | } |
| 643 | read_unlock(&addr_space_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 645 | if (length && (rcode == RCODE_COMPLETE)) |
| 646 | rcode = RCODE_ADDRESS_ERROR; |
| 647 | return rcode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | } |
| 649 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 650 | int highlevel_write(struct hpsb_host *host, int nodeid, int destid, void *data, |
| 651 | u64 addr, unsigned int length, u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 653 | struct hpsb_address_serve *as; |
| 654 | unsigned int partlength; |
| 655 | int rcode = RCODE_ADDRESS_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 657 | read_lock(&addr_space_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | list_for_each_entry(as, &host->addr_space, host_list) { |
| 659 | if (as->start > addr) |
| 660 | break; |
| 661 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 662 | if (as->end > addr) { |
| 663 | partlength = min(as->end - addr, (u64) length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 665 | if (as->op->write) |
| 666 | rcode = as->op->write(host, nodeid, destid, |
| 667 | data, addr, partlength, |
| 668 | flags); |
| 669 | else |
| 670 | rcode = RCODE_TYPE_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | |
| 672 | data += partlength; |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 673 | length -= partlength; |
| 674 | addr += partlength; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 676 | if ((rcode != RCODE_COMPLETE) || !length) |
| 677 | break; |
| 678 | } |
| 679 | } |
| 680 | read_unlock(&addr_space_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 682 | if (length && (rcode == RCODE_COMPLETE)) |
| 683 | rcode = RCODE_ADDRESS_ERROR; |
| 684 | return rcode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | } |
| 686 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | int highlevel_lock(struct hpsb_host *host, int nodeid, quadlet_t *store, |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 688 | u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode, |
| 689 | u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 691 | struct hpsb_address_serve *as; |
| 692 | int rcode = RCODE_ADDRESS_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 694 | read_lock(&addr_space_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | list_for_each_entry(as, &host->addr_space, host_list) { |
| 696 | if (as->start > addr) |
| 697 | break; |
| 698 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 699 | if (as->end > addr) { |
| 700 | if (as->op->lock) |
| 701 | rcode = as->op->lock(host, nodeid, store, addr, |
| 702 | data, arg, ext_tcode, |
| 703 | flags); |
| 704 | else |
| 705 | rcode = RCODE_TYPE_ERROR; |
| 706 | break; |
| 707 | } |
| 708 | } |
| 709 | read_unlock(&addr_space_lock); |
| 710 | return rcode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | } |
| 712 | |
| 713 | int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store, |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 714 | u64 addr, octlet_t data, octlet_t arg, int ext_tcode, |
| 715 | u16 flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | { |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 717 | struct hpsb_address_serve *as; |
| 718 | int rcode = RCODE_ADDRESS_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 720 | read_lock(&addr_space_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
| 722 | list_for_each_entry(as, &host->addr_space, host_list) { |
| 723 | if (as->start > addr) |
| 724 | break; |
| 725 | |
Ben Collins | 2c4b69b | 2006-06-12 18:16:16 -0400 | [diff] [blame] | 726 | if (as->end > addr) { |
| 727 | if (as->op->lock64) |
| 728 | rcode = as->op->lock64(host, nodeid, store, |
| 729 | addr, data, arg, |
| 730 | ext_tcode, flags); |
| 731 | else |
| 732 | rcode = RCODE_TYPE_ERROR; |
| 733 | break; |
| 734 | } |
| 735 | } |
| 736 | read_unlock(&addr_space_lock); |
| 737 | return rcode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | } |