Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Sonics Silicon Backplane |
| 3 | * Subsystem core |
| 4 | * |
| 5 | * Copyright 2005, Broadcom Corporation |
| 6 | * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de> |
| 7 | * |
| 8 | * Licensed under the GNU/GPL. See COPYING for details. |
| 9 | */ |
| 10 | |
| 11 | #include "ssb_private.h" |
| 12 | |
| 13 | #include <linux/delay.h> |
Geert Uytterhoeven | 6faf035 | 2007-10-13 14:31:31 +0200 | [diff] [blame] | 14 | #include <linux/io.h> |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 15 | #include <linux/ssb/ssb.h> |
| 16 | #include <linux/ssb/ssb_regs.h> |
Michael Buesch | aab547c | 2008-02-29 11:36:12 +0100 | [diff] [blame] | 17 | #include <linux/ssb/ssb_driver_gige.h> |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 18 | #include <linux/dma-mapping.h> |
| 19 | #include <linux/pci.h> |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 20 | #include <linux/mmc/sdio_func.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 21 | #include <linux/slab.h> |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 22 | |
| 23 | #include <pcmcia/cs_types.h> |
| 24 | #include <pcmcia/cs.h> |
| 25 | #include <pcmcia/cistpl.h> |
| 26 | #include <pcmcia/ds.h> |
| 27 | |
| 28 | |
| 29 | MODULE_DESCRIPTION("Sonics Silicon Backplane driver"); |
| 30 | MODULE_LICENSE("GPL"); |
| 31 | |
| 32 | |
| 33 | /* Temporary list of yet-to-be-attached buses */ |
| 34 | static LIST_HEAD(attach_queue); |
| 35 | /* List if running buses */ |
| 36 | static LIST_HEAD(buses); |
| 37 | /* Software ID counter */ |
| 38 | static unsigned int next_busnumber; |
| 39 | /* buses_mutes locks the two buslists and the next_busnumber. |
| 40 | * Don't lock this directly, but use ssb_buses_[un]lock() below. */ |
| 41 | static DEFINE_MUTEX(buses_mutex); |
| 42 | |
| 43 | /* There are differences in the codeflow, if the bus is |
| 44 | * initialized from early boot, as various needed services |
| 45 | * are not available early. This is a mechanism to delay |
| 46 | * these initializations to after early boot has finished. |
| 47 | * It's also used to avoid mutex locking, as that's not |
| 48 | * available and needed early. */ |
| 49 | static bool ssb_is_early_boot = 1; |
| 50 | |
| 51 | static void ssb_buses_lock(void); |
| 52 | static void ssb_buses_unlock(void); |
| 53 | |
| 54 | |
| 55 | #ifdef CONFIG_SSB_PCIHOST |
| 56 | struct ssb_bus *ssb_pci_dev_to_bus(struct pci_dev *pdev) |
| 57 | { |
| 58 | struct ssb_bus *bus; |
| 59 | |
| 60 | ssb_buses_lock(); |
| 61 | list_for_each_entry(bus, &buses, list) { |
| 62 | if (bus->bustype == SSB_BUSTYPE_PCI && |
| 63 | bus->host_pci == pdev) |
| 64 | goto found; |
| 65 | } |
| 66 | bus = NULL; |
| 67 | found: |
| 68 | ssb_buses_unlock(); |
| 69 | |
| 70 | return bus; |
| 71 | } |
| 72 | #endif /* CONFIG_SSB_PCIHOST */ |
| 73 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 74 | #ifdef CONFIG_SSB_PCMCIAHOST |
| 75 | struct ssb_bus *ssb_pcmcia_dev_to_bus(struct pcmcia_device *pdev) |
| 76 | { |
| 77 | struct ssb_bus *bus; |
| 78 | |
| 79 | ssb_buses_lock(); |
| 80 | list_for_each_entry(bus, &buses, list) { |
| 81 | if (bus->bustype == SSB_BUSTYPE_PCMCIA && |
| 82 | bus->host_pcmcia == pdev) |
| 83 | goto found; |
| 84 | } |
| 85 | bus = NULL; |
| 86 | found: |
| 87 | ssb_buses_unlock(); |
| 88 | |
| 89 | return bus; |
| 90 | } |
| 91 | #endif /* CONFIG_SSB_PCMCIAHOST */ |
| 92 | |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 93 | #ifdef CONFIG_SSB_SDIOHOST |
| 94 | struct ssb_bus *ssb_sdio_func_to_bus(struct sdio_func *func) |
| 95 | { |
| 96 | struct ssb_bus *bus; |
| 97 | |
| 98 | ssb_buses_lock(); |
| 99 | list_for_each_entry(bus, &buses, list) { |
| 100 | if (bus->bustype == SSB_BUSTYPE_SDIO && |
| 101 | bus->host_sdio == func) |
| 102 | goto found; |
| 103 | } |
| 104 | bus = NULL; |
| 105 | found: |
| 106 | ssb_buses_unlock(); |
| 107 | |
| 108 | return bus; |
| 109 | } |
| 110 | #endif /* CONFIG_SSB_SDIOHOST */ |
| 111 | |
Michael Buesch | aab547c | 2008-02-29 11:36:12 +0100 | [diff] [blame] | 112 | int ssb_for_each_bus_call(unsigned long data, |
| 113 | int (*func)(struct ssb_bus *bus, unsigned long data)) |
| 114 | { |
| 115 | struct ssb_bus *bus; |
| 116 | int res; |
| 117 | |
| 118 | ssb_buses_lock(); |
| 119 | list_for_each_entry(bus, &buses, list) { |
| 120 | res = func(bus, data); |
| 121 | if (res >= 0) { |
| 122 | ssb_buses_unlock(); |
| 123 | return res; |
| 124 | } |
| 125 | } |
| 126 | ssb_buses_unlock(); |
| 127 | |
| 128 | return -ENODEV; |
| 129 | } |
| 130 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 131 | static struct ssb_device *ssb_device_get(struct ssb_device *dev) |
| 132 | { |
| 133 | if (dev) |
| 134 | get_device(dev->dev); |
| 135 | return dev; |
| 136 | } |
| 137 | |
| 138 | static void ssb_device_put(struct ssb_device *dev) |
| 139 | { |
| 140 | if (dev) |
| 141 | put_device(dev->dev); |
| 142 | } |
| 143 | |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 144 | static inline struct ssb_driver *ssb_driver_get(struct ssb_driver *drv) |
| 145 | { |
| 146 | if (drv) |
| 147 | get_driver(&drv->drv); |
| 148 | return drv; |
| 149 | } |
| 150 | |
| 151 | static inline void ssb_driver_put(struct ssb_driver *drv) |
| 152 | { |
| 153 | if (drv) |
| 154 | put_driver(&drv->drv); |
| 155 | } |
| 156 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 157 | static int ssb_device_resume(struct device *dev) |
| 158 | { |
| 159 | struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); |
| 160 | struct ssb_driver *ssb_drv; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 161 | int err = 0; |
| 162 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 163 | if (dev->driver) { |
| 164 | ssb_drv = drv_to_ssb_drv(dev->driver); |
| 165 | if (ssb_drv && ssb_drv->resume) |
| 166 | err = ssb_drv->resume(ssb_dev); |
| 167 | if (err) |
| 168 | goto out; |
| 169 | } |
| 170 | out: |
| 171 | return err; |
| 172 | } |
| 173 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 174 | static int ssb_device_suspend(struct device *dev, pm_message_t state) |
| 175 | { |
| 176 | struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); |
| 177 | struct ssb_driver *ssb_drv; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 178 | int err = 0; |
| 179 | |
| 180 | if (dev->driver) { |
| 181 | ssb_drv = drv_to_ssb_drv(dev->driver); |
| 182 | if (ssb_drv && ssb_drv->suspend) |
| 183 | err = ssb_drv->suspend(ssb_dev, state); |
| 184 | if (err) |
| 185 | goto out; |
| 186 | } |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 187 | out: |
| 188 | return err; |
| 189 | } |
| 190 | |
Michael Buesch | 8fe2b65 | 2008-03-30 00:10:50 +0100 | [diff] [blame] | 191 | int ssb_bus_resume(struct ssb_bus *bus) |
| 192 | { |
| 193 | int err; |
| 194 | |
| 195 | /* Reset HW state information in memory, so that HW is |
| 196 | * completely reinitialized. */ |
| 197 | bus->mapped_device = NULL; |
| 198 | #ifdef CONFIG_SSB_DRIVER_PCICORE |
| 199 | bus->pcicore.setup_done = 0; |
| 200 | #endif |
| 201 | |
| 202 | err = ssb_bus_powerup(bus, 0); |
| 203 | if (err) |
| 204 | return err; |
| 205 | err = ssb_pcmcia_hardware_setup(bus); |
| 206 | if (err) { |
| 207 | ssb_bus_may_powerdown(bus); |
| 208 | return err; |
| 209 | } |
| 210 | ssb_chipco_resume(&bus->chipco); |
| 211 | ssb_bus_may_powerdown(bus); |
| 212 | |
| 213 | return 0; |
| 214 | } |
| 215 | EXPORT_SYMBOL(ssb_bus_resume); |
| 216 | |
| 217 | int ssb_bus_suspend(struct ssb_bus *bus) |
| 218 | { |
| 219 | ssb_chipco_suspend(&bus->chipco); |
| 220 | ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0); |
| 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | EXPORT_SYMBOL(ssb_bus_suspend); |
| 225 | |
Michael Buesch | d72bb40 | 2008-04-02 17:03:26 +0200 | [diff] [blame] | 226 | #ifdef CONFIG_SSB_SPROM |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 227 | /** ssb_devices_freeze - Freeze all devices on the bus. |
| 228 | * |
| 229 | * After freezing no device driver will be handling a device |
| 230 | * on this bus anymore. ssb_devices_thaw() must be called after |
| 231 | * a successful freeze to reactivate the devices. |
| 232 | * |
| 233 | * @bus: The bus. |
| 234 | * @ctx: Context structure. Pass this to ssb_devices_thaw(). |
| 235 | */ |
| 236 | int ssb_devices_freeze(struct ssb_bus *bus, struct ssb_freeze_context *ctx) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 237 | { |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 238 | struct ssb_device *sdev; |
| 239 | struct ssb_driver *sdrv; |
| 240 | unsigned int i; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 241 | |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 242 | memset(ctx, 0, sizeof(*ctx)); |
| 243 | ctx->bus = bus; |
| 244 | SSB_WARN_ON(bus->nr_devices > ARRAY_SIZE(ctx->device_frozen)); |
| 245 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 246 | for (i = 0; i < bus->nr_devices; i++) { |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 247 | sdev = ssb_device_get(&bus->devices[i]); |
| 248 | |
| 249 | if (!sdev->dev || !sdev->dev->driver || |
| 250 | !device_is_registered(sdev->dev)) { |
| 251 | ssb_device_put(sdev); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 252 | continue; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 253 | } |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 254 | sdrv = ssb_driver_get(drv_to_ssb_drv(sdev->dev->driver)); |
| 255 | if (!sdrv || SSB_WARN_ON(!sdrv->remove)) { |
| 256 | ssb_device_put(sdev); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 257 | continue; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 258 | } |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 259 | sdrv->remove(sdev); |
| 260 | ctx->device_frozen[i] = 1; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | return 0; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 264 | } |
| 265 | |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 266 | /** ssb_devices_thaw - Unfreeze all devices on the bus. |
| 267 | * |
| 268 | * This will re-attach the device drivers and re-init the devices. |
| 269 | * |
| 270 | * @ctx: The context structure from ssb_devices_freeze() |
| 271 | */ |
| 272 | int ssb_devices_thaw(struct ssb_freeze_context *ctx) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 273 | { |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 274 | struct ssb_bus *bus = ctx->bus; |
| 275 | struct ssb_device *sdev; |
| 276 | struct ssb_driver *sdrv; |
| 277 | unsigned int i; |
| 278 | int err, result = 0; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 279 | |
| 280 | for (i = 0; i < bus->nr_devices; i++) { |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 281 | if (!ctx->device_frozen[i]) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 282 | continue; |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 283 | sdev = &bus->devices[i]; |
| 284 | |
| 285 | if (SSB_WARN_ON(!sdev->dev || !sdev->dev->driver)) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 286 | continue; |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 287 | sdrv = drv_to_ssb_drv(sdev->dev->driver); |
| 288 | if (SSB_WARN_ON(!sdrv || !sdrv->probe)) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 289 | continue; |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 290 | |
| 291 | err = sdrv->probe(sdev, &sdev->id); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 292 | if (err) { |
| 293 | ssb_printk(KERN_ERR PFX "Failed to thaw device %s\n", |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 294 | dev_name(sdev->dev)); |
| 295 | result = err; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 296 | } |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 297 | ssb_driver_put(sdrv); |
| 298 | ssb_device_put(sdev); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 299 | } |
| 300 | |
Michael Buesch | 3ba6018 | 2009-11-23 20:12:13 +0100 | [diff] [blame] | 301 | return result; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 302 | } |
Michael Buesch | d72bb40 | 2008-04-02 17:03:26 +0200 | [diff] [blame] | 303 | #endif /* CONFIG_SSB_SPROM */ |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 304 | |
| 305 | static void ssb_device_shutdown(struct device *dev) |
| 306 | { |
| 307 | struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); |
| 308 | struct ssb_driver *ssb_drv; |
| 309 | |
| 310 | if (!dev->driver) |
| 311 | return; |
| 312 | ssb_drv = drv_to_ssb_drv(dev->driver); |
| 313 | if (ssb_drv && ssb_drv->shutdown) |
| 314 | ssb_drv->shutdown(ssb_dev); |
| 315 | } |
| 316 | |
| 317 | static int ssb_device_remove(struct device *dev) |
| 318 | { |
| 319 | struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); |
| 320 | struct ssb_driver *ssb_drv = drv_to_ssb_drv(dev->driver); |
| 321 | |
| 322 | if (ssb_drv && ssb_drv->remove) |
| 323 | ssb_drv->remove(ssb_dev); |
| 324 | ssb_device_put(ssb_dev); |
| 325 | |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | static int ssb_device_probe(struct device *dev) |
| 330 | { |
| 331 | struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); |
| 332 | struct ssb_driver *ssb_drv = drv_to_ssb_drv(dev->driver); |
| 333 | int err = 0; |
| 334 | |
| 335 | ssb_device_get(ssb_dev); |
| 336 | if (ssb_drv && ssb_drv->probe) |
| 337 | err = ssb_drv->probe(ssb_dev, &ssb_dev->id); |
| 338 | if (err) |
| 339 | ssb_device_put(ssb_dev); |
| 340 | |
| 341 | return err; |
| 342 | } |
| 343 | |
| 344 | static int ssb_match_devid(const struct ssb_device_id *tabid, |
| 345 | const struct ssb_device_id *devid) |
| 346 | { |
| 347 | if ((tabid->vendor != devid->vendor) && |
| 348 | tabid->vendor != SSB_ANY_VENDOR) |
| 349 | return 0; |
| 350 | if ((tabid->coreid != devid->coreid) && |
| 351 | tabid->coreid != SSB_ANY_ID) |
| 352 | return 0; |
| 353 | if ((tabid->revision != devid->revision) && |
| 354 | tabid->revision != SSB_ANY_REV) |
| 355 | return 0; |
| 356 | return 1; |
| 357 | } |
| 358 | |
| 359 | static int ssb_bus_match(struct device *dev, struct device_driver *drv) |
| 360 | { |
| 361 | struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); |
| 362 | struct ssb_driver *ssb_drv = drv_to_ssb_drv(drv); |
| 363 | const struct ssb_device_id *id; |
| 364 | |
| 365 | for (id = ssb_drv->id_table; |
| 366 | id->vendor || id->coreid || id->revision; |
| 367 | id++) { |
| 368 | if (ssb_match_devid(id, &ssb_dev->id)) |
| 369 | return 1; /* found */ |
| 370 | } |
| 371 | |
| 372 | return 0; |
| 373 | } |
| 374 | |
Al Viro | 7ac0326 | 2007-10-14 05:46:09 +0100 | [diff] [blame] | 375 | static int ssb_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 376 | { |
| 377 | struct ssb_device *ssb_dev = dev_to_ssb_dev(dev); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 378 | |
| 379 | if (!dev) |
| 380 | return -ENODEV; |
| 381 | |
Al Viro | 7ac0326 | 2007-10-14 05:46:09 +0100 | [diff] [blame] | 382 | return add_uevent_var(env, |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 383 | "MODALIAS=ssb:v%04Xid%04Xrev%02X", |
| 384 | ssb_dev->id.vendor, ssb_dev->id.coreid, |
| 385 | ssb_dev->id.revision); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | static struct bus_type ssb_bustype = { |
| 389 | .name = "ssb", |
| 390 | .match = ssb_bus_match, |
| 391 | .probe = ssb_device_probe, |
| 392 | .remove = ssb_device_remove, |
| 393 | .shutdown = ssb_device_shutdown, |
| 394 | .suspend = ssb_device_suspend, |
| 395 | .resume = ssb_device_resume, |
| 396 | .uevent = ssb_device_uevent, |
| 397 | }; |
| 398 | |
| 399 | static void ssb_buses_lock(void) |
| 400 | { |
| 401 | /* See the comment at the ssb_is_early_boot definition */ |
| 402 | if (!ssb_is_early_boot) |
| 403 | mutex_lock(&buses_mutex); |
| 404 | } |
| 405 | |
| 406 | static void ssb_buses_unlock(void) |
| 407 | { |
| 408 | /* See the comment at the ssb_is_early_boot definition */ |
| 409 | if (!ssb_is_early_boot) |
| 410 | mutex_unlock(&buses_mutex); |
| 411 | } |
| 412 | |
| 413 | static void ssb_devices_unregister(struct ssb_bus *bus) |
| 414 | { |
| 415 | struct ssb_device *sdev; |
| 416 | int i; |
| 417 | |
| 418 | for (i = bus->nr_devices - 1; i >= 0; i--) { |
| 419 | sdev = &(bus->devices[i]); |
| 420 | if (sdev->dev) |
| 421 | device_unregister(sdev->dev); |
| 422 | } |
| 423 | } |
| 424 | |
| 425 | void ssb_bus_unregister(struct ssb_bus *bus) |
| 426 | { |
| 427 | ssb_buses_lock(); |
| 428 | ssb_devices_unregister(bus); |
| 429 | list_del(&bus->list); |
| 430 | ssb_buses_unlock(); |
| 431 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 432 | ssb_pcmcia_exit(bus); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 433 | ssb_pci_exit(bus); |
| 434 | ssb_iounmap(bus); |
| 435 | } |
| 436 | EXPORT_SYMBOL(ssb_bus_unregister); |
| 437 | |
| 438 | static void ssb_release_dev(struct device *dev) |
| 439 | { |
| 440 | struct __ssb_dev_wrapper *devwrap; |
| 441 | |
| 442 | devwrap = container_of(dev, struct __ssb_dev_wrapper, dev); |
| 443 | kfree(devwrap); |
| 444 | } |
| 445 | |
| 446 | static int ssb_devices_register(struct ssb_bus *bus) |
| 447 | { |
| 448 | struct ssb_device *sdev; |
| 449 | struct device *dev; |
| 450 | struct __ssb_dev_wrapper *devwrap; |
| 451 | int i, err = 0; |
| 452 | int dev_idx = 0; |
| 453 | |
| 454 | for (i = 0; i < bus->nr_devices; i++) { |
| 455 | sdev = &(bus->devices[i]); |
| 456 | |
| 457 | /* We don't register SSB-system devices to the kernel, |
| 458 | * as the drivers for them are built into SSB. */ |
| 459 | switch (sdev->id.coreid) { |
| 460 | case SSB_DEV_CHIPCOMMON: |
| 461 | case SSB_DEV_PCI: |
| 462 | case SSB_DEV_PCIE: |
| 463 | case SSB_DEV_PCMCIA: |
| 464 | case SSB_DEV_MIPS: |
| 465 | case SSB_DEV_MIPS_3302: |
| 466 | case SSB_DEV_EXTIF: |
| 467 | continue; |
| 468 | } |
| 469 | |
| 470 | devwrap = kzalloc(sizeof(*devwrap), GFP_KERNEL); |
| 471 | if (!devwrap) { |
| 472 | ssb_printk(KERN_ERR PFX |
| 473 | "Could not allocate device\n"); |
| 474 | err = -ENOMEM; |
| 475 | goto error; |
| 476 | } |
| 477 | dev = &devwrap->dev; |
| 478 | devwrap->sdev = sdev; |
| 479 | |
| 480 | dev->release = ssb_release_dev; |
| 481 | dev->bus = &ssb_bustype; |
Kay Sievers | b7b05fe | 2008-10-30 15:51:57 +0100 | [diff] [blame] | 482 | dev_set_name(dev, "ssb%u:%d", bus->busnumber, dev_idx); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 483 | |
| 484 | switch (bus->bustype) { |
| 485 | case SSB_BUSTYPE_PCI: |
| 486 | #ifdef CONFIG_SSB_PCIHOST |
| 487 | sdev->irq = bus->host_pci->irq; |
| 488 | dev->parent = &bus->host_pci->dev; |
FUJITA Tomonori | 14f9295 | 2010-06-03 19:37:27 -0700 | [diff] [blame] | 489 | sdev->dma_dev = dev->parent; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 490 | #endif |
| 491 | break; |
| 492 | case SSB_BUSTYPE_PCMCIA: |
| 493 | #ifdef CONFIG_SSB_PCMCIAHOST |
Dominik Brodowski | eb14120 | 2010-03-07 12:21:16 +0100 | [diff] [blame] | 494 | sdev->irq = bus->host_pcmcia->irq; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 495 | dev->parent = &bus->host_pcmcia->dev; |
| 496 | #endif |
| 497 | break; |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 498 | case SSB_BUSTYPE_SDIO: |
Michael Buesch | 391ae22 | 2010-02-03 18:24:35 +0100 | [diff] [blame] | 499 | #ifdef CONFIG_SSB_SDIOHOST |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 500 | dev->parent = &bus->host_sdio->dev; |
| 501 | #endif |
| 502 | break; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 503 | case SSB_BUSTYPE_SSB: |
Aurelien Jarno | ac82da3 | 2008-09-26 22:27:11 +0200 | [diff] [blame] | 504 | dev->dma_mask = &dev->coherent_dma_mask; |
FUJITA Tomonori | 14f9295 | 2010-06-03 19:37:27 -0700 | [diff] [blame] | 505 | sdev->dma_dev = dev; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 506 | break; |
| 507 | } |
| 508 | |
| 509 | sdev->dev = dev; |
| 510 | err = device_register(dev); |
| 511 | if (err) { |
| 512 | ssb_printk(KERN_ERR PFX |
| 513 | "Could not register %s\n", |
Kay Sievers | b7b05fe | 2008-10-30 15:51:57 +0100 | [diff] [blame] | 514 | dev_name(dev)); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 515 | /* Set dev to NULL to not unregister |
| 516 | * dev on error unwinding. */ |
| 517 | sdev->dev = NULL; |
| 518 | kfree(devwrap); |
| 519 | goto error; |
| 520 | } |
| 521 | dev_idx++; |
| 522 | } |
| 523 | |
| 524 | return 0; |
| 525 | error: |
| 526 | /* Unwind the already registered devices. */ |
| 527 | ssb_devices_unregister(bus); |
| 528 | return err; |
| 529 | } |
| 530 | |
| 531 | /* Needs ssb_buses_lock() */ |
| 532 | static int ssb_attach_queued_buses(void) |
| 533 | { |
| 534 | struct ssb_bus *bus, *n; |
| 535 | int err = 0; |
| 536 | int drop_them_all = 0; |
| 537 | |
| 538 | list_for_each_entry_safe(bus, n, &attach_queue, list) { |
| 539 | if (drop_them_all) { |
| 540 | list_del(&bus->list); |
| 541 | continue; |
| 542 | } |
| 543 | /* Can't init the PCIcore in ssb_bus_register(), as that |
| 544 | * is too early in boot for embedded systems |
| 545 | * (no udelay() available). So do it here in attach stage. |
| 546 | */ |
| 547 | err = ssb_bus_powerup(bus, 0); |
| 548 | if (err) |
| 549 | goto error; |
| 550 | ssb_pcicore_init(&bus->pcicore); |
| 551 | ssb_bus_may_powerdown(bus); |
| 552 | |
| 553 | err = ssb_devices_register(bus); |
| 554 | error: |
| 555 | if (err) { |
| 556 | drop_them_all = 1; |
| 557 | list_del(&bus->list); |
| 558 | continue; |
| 559 | } |
| 560 | list_move_tail(&bus->list, &buses); |
| 561 | } |
| 562 | |
| 563 | return err; |
| 564 | } |
| 565 | |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 566 | static u8 ssb_ssb_read8(struct ssb_device *dev, u16 offset) |
| 567 | { |
| 568 | struct ssb_bus *bus = dev->bus; |
| 569 | |
| 570 | offset += dev->core_index * SSB_CORE_SIZE; |
| 571 | return readb(bus->mmio + offset); |
| 572 | } |
| 573 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 574 | static u16 ssb_ssb_read16(struct ssb_device *dev, u16 offset) |
| 575 | { |
| 576 | struct ssb_bus *bus = dev->bus; |
| 577 | |
| 578 | offset += dev->core_index * SSB_CORE_SIZE; |
| 579 | return readw(bus->mmio + offset); |
| 580 | } |
| 581 | |
| 582 | static u32 ssb_ssb_read32(struct ssb_device *dev, u16 offset) |
| 583 | { |
| 584 | struct ssb_bus *bus = dev->bus; |
| 585 | |
| 586 | offset += dev->core_index * SSB_CORE_SIZE; |
| 587 | return readl(bus->mmio + offset); |
| 588 | } |
| 589 | |
Michael Buesch | d625a29 | 2008-04-02 19:46:56 +0200 | [diff] [blame] | 590 | #ifdef CONFIG_SSB_BLOCKIO |
| 591 | static void ssb_ssb_block_read(struct ssb_device *dev, void *buffer, |
| 592 | size_t count, u16 offset, u8 reg_width) |
| 593 | { |
| 594 | struct ssb_bus *bus = dev->bus; |
| 595 | void __iomem *addr; |
| 596 | |
| 597 | offset += dev->core_index * SSB_CORE_SIZE; |
| 598 | addr = bus->mmio + offset; |
| 599 | |
| 600 | switch (reg_width) { |
| 601 | case sizeof(u8): { |
| 602 | u8 *buf = buffer; |
| 603 | |
| 604 | while (count) { |
| 605 | *buf = __raw_readb(addr); |
| 606 | buf++; |
| 607 | count--; |
| 608 | } |
| 609 | break; |
| 610 | } |
| 611 | case sizeof(u16): { |
| 612 | __le16 *buf = buffer; |
| 613 | |
| 614 | SSB_WARN_ON(count & 1); |
| 615 | while (count) { |
| 616 | *buf = (__force __le16)__raw_readw(addr); |
| 617 | buf++; |
| 618 | count -= 2; |
| 619 | } |
| 620 | break; |
| 621 | } |
| 622 | case sizeof(u32): { |
| 623 | __le32 *buf = buffer; |
| 624 | |
| 625 | SSB_WARN_ON(count & 3); |
| 626 | while (count) { |
| 627 | *buf = (__force __le32)__raw_readl(addr); |
| 628 | buf++; |
| 629 | count -= 4; |
| 630 | } |
| 631 | break; |
| 632 | } |
| 633 | default: |
| 634 | SSB_WARN_ON(1); |
| 635 | } |
| 636 | } |
| 637 | #endif /* CONFIG_SSB_BLOCKIO */ |
| 638 | |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 639 | static void ssb_ssb_write8(struct ssb_device *dev, u16 offset, u8 value) |
| 640 | { |
| 641 | struct ssb_bus *bus = dev->bus; |
| 642 | |
| 643 | offset += dev->core_index * SSB_CORE_SIZE; |
| 644 | writeb(value, bus->mmio + offset); |
| 645 | } |
| 646 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 647 | static void ssb_ssb_write16(struct ssb_device *dev, u16 offset, u16 value) |
| 648 | { |
| 649 | struct ssb_bus *bus = dev->bus; |
| 650 | |
| 651 | offset += dev->core_index * SSB_CORE_SIZE; |
| 652 | writew(value, bus->mmio + offset); |
| 653 | } |
| 654 | |
| 655 | static void ssb_ssb_write32(struct ssb_device *dev, u16 offset, u32 value) |
| 656 | { |
| 657 | struct ssb_bus *bus = dev->bus; |
| 658 | |
| 659 | offset += dev->core_index * SSB_CORE_SIZE; |
| 660 | writel(value, bus->mmio + offset); |
| 661 | } |
| 662 | |
Michael Buesch | d625a29 | 2008-04-02 19:46:56 +0200 | [diff] [blame] | 663 | #ifdef CONFIG_SSB_BLOCKIO |
| 664 | static void ssb_ssb_block_write(struct ssb_device *dev, const void *buffer, |
| 665 | size_t count, u16 offset, u8 reg_width) |
| 666 | { |
| 667 | struct ssb_bus *bus = dev->bus; |
| 668 | void __iomem *addr; |
| 669 | |
| 670 | offset += dev->core_index * SSB_CORE_SIZE; |
| 671 | addr = bus->mmio + offset; |
| 672 | |
| 673 | switch (reg_width) { |
| 674 | case sizeof(u8): { |
| 675 | const u8 *buf = buffer; |
| 676 | |
| 677 | while (count) { |
| 678 | __raw_writeb(*buf, addr); |
| 679 | buf++; |
| 680 | count--; |
| 681 | } |
| 682 | break; |
| 683 | } |
| 684 | case sizeof(u16): { |
| 685 | const __le16 *buf = buffer; |
| 686 | |
| 687 | SSB_WARN_ON(count & 1); |
| 688 | while (count) { |
| 689 | __raw_writew((__force u16)(*buf), addr); |
| 690 | buf++; |
| 691 | count -= 2; |
| 692 | } |
| 693 | break; |
| 694 | } |
| 695 | case sizeof(u32): { |
| 696 | const __le32 *buf = buffer; |
| 697 | |
| 698 | SSB_WARN_ON(count & 3); |
| 699 | while (count) { |
| 700 | __raw_writel((__force u32)(*buf), addr); |
| 701 | buf++; |
| 702 | count -= 4; |
| 703 | } |
| 704 | break; |
| 705 | } |
| 706 | default: |
| 707 | SSB_WARN_ON(1); |
| 708 | } |
| 709 | } |
| 710 | #endif /* CONFIG_SSB_BLOCKIO */ |
| 711 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 712 | /* Ops for the plain SSB bus without a host-device (no PCI or PCMCIA). */ |
| 713 | static const struct ssb_bus_ops ssb_ssb_ops = { |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 714 | .read8 = ssb_ssb_read8, |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 715 | .read16 = ssb_ssb_read16, |
| 716 | .read32 = ssb_ssb_read32, |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 717 | .write8 = ssb_ssb_write8, |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 718 | .write16 = ssb_ssb_write16, |
| 719 | .write32 = ssb_ssb_write32, |
Michael Buesch | d625a29 | 2008-04-02 19:46:56 +0200 | [diff] [blame] | 720 | #ifdef CONFIG_SSB_BLOCKIO |
| 721 | .block_read = ssb_ssb_block_read, |
| 722 | .block_write = ssb_ssb_block_write, |
| 723 | #endif |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 724 | }; |
| 725 | |
| 726 | static int ssb_fetch_invariants(struct ssb_bus *bus, |
| 727 | ssb_invariants_func_t get_invariants) |
| 728 | { |
| 729 | struct ssb_init_invariants iv; |
| 730 | int err; |
| 731 | |
| 732 | memset(&iv, 0, sizeof(iv)); |
| 733 | err = get_invariants(bus, &iv); |
| 734 | if (err) |
| 735 | goto out; |
| 736 | memcpy(&bus->boardinfo, &iv.boardinfo, sizeof(iv.boardinfo)); |
| 737 | memcpy(&bus->sprom, &iv.sprom, sizeof(iv.sprom)); |
Michael Buesch | 7cb4461 | 2008-02-19 17:46:48 +0100 | [diff] [blame] | 738 | bus->has_cardbus_slot = iv.has_cardbus_slot; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 739 | out: |
| 740 | return err; |
| 741 | } |
| 742 | |
| 743 | static int ssb_bus_register(struct ssb_bus *bus, |
| 744 | ssb_invariants_func_t get_invariants, |
| 745 | unsigned long baseaddr) |
| 746 | { |
| 747 | int err; |
| 748 | |
| 749 | spin_lock_init(&bus->bar_lock); |
| 750 | INIT_LIST_HEAD(&bus->list); |
Michael Buesch | 53521d8 | 2008-02-19 16:22:50 +0100 | [diff] [blame] | 751 | #ifdef CONFIG_SSB_EMBEDDED |
| 752 | spin_lock_init(&bus->gpio_lock); |
| 753 | #endif |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 754 | |
| 755 | /* Powerup the bus */ |
| 756 | err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 1); |
| 757 | if (err) |
| 758 | goto out; |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 759 | |
| 760 | /* Init SDIO-host device (if any), before the scan */ |
| 761 | err = ssb_sdio_init(bus); |
| 762 | if (err) |
| 763 | goto err_disable_xtal; |
| 764 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 765 | ssb_buses_lock(); |
| 766 | bus->busnumber = next_busnumber; |
| 767 | /* Scan for devices (cores) */ |
| 768 | err = ssb_bus_scan(bus, baseaddr); |
| 769 | if (err) |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 770 | goto err_sdio_exit; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 771 | |
| 772 | /* Init PCI-host device (if any) */ |
| 773 | err = ssb_pci_init(bus); |
| 774 | if (err) |
| 775 | goto err_unmap; |
| 776 | /* Init PCMCIA-host device (if any) */ |
| 777 | err = ssb_pcmcia_init(bus); |
| 778 | if (err) |
| 779 | goto err_pci_exit; |
| 780 | |
| 781 | /* Initialize basic system devices (if available) */ |
| 782 | err = ssb_bus_powerup(bus, 0); |
| 783 | if (err) |
| 784 | goto err_pcmcia_exit; |
| 785 | ssb_chipcommon_init(&bus->chipco); |
| 786 | ssb_mipscore_init(&bus->mipscore); |
| 787 | err = ssb_fetch_invariants(bus, get_invariants); |
| 788 | if (err) { |
| 789 | ssb_bus_may_powerdown(bus); |
| 790 | goto err_pcmcia_exit; |
| 791 | } |
| 792 | ssb_bus_may_powerdown(bus); |
| 793 | |
| 794 | /* Queue it for attach. |
| 795 | * See the comment at the ssb_is_early_boot definition. */ |
| 796 | list_add_tail(&bus->list, &attach_queue); |
| 797 | if (!ssb_is_early_boot) { |
| 798 | /* This is not early boot, so we must attach the bus now */ |
| 799 | err = ssb_attach_queued_buses(); |
| 800 | if (err) |
| 801 | goto err_dequeue; |
| 802 | } |
| 803 | next_busnumber++; |
| 804 | ssb_buses_unlock(); |
| 805 | |
| 806 | out: |
| 807 | return err; |
| 808 | |
| 809 | err_dequeue: |
| 810 | list_del(&bus->list); |
| 811 | err_pcmcia_exit: |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 812 | ssb_pcmcia_exit(bus); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 813 | err_pci_exit: |
| 814 | ssb_pci_exit(bus); |
| 815 | err_unmap: |
| 816 | ssb_iounmap(bus); |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 817 | err_sdio_exit: |
| 818 | ssb_sdio_exit(bus); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 819 | err_disable_xtal: |
| 820 | ssb_buses_unlock(); |
| 821 | ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0); |
| 822 | return err; |
| 823 | } |
| 824 | |
| 825 | #ifdef CONFIG_SSB_PCIHOST |
| 826 | int ssb_bus_pcibus_register(struct ssb_bus *bus, |
| 827 | struct pci_dev *host_pci) |
| 828 | { |
| 829 | int err; |
| 830 | |
| 831 | bus->bustype = SSB_BUSTYPE_PCI; |
| 832 | bus->host_pci = host_pci; |
| 833 | bus->ops = &ssb_pci_ops; |
| 834 | |
| 835 | err = ssb_bus_register(bus, ssb_pci_get_invariants, 0); |
| 836 | if (!err) { |
| 837 | ssb_printk(KERN_INFO PFX "Sonics Silicon Backplane found on " |
Kay Sievers | b7b05fe | 2008-10-30 15:51:57 +0100 | [diff] [blame] | 838 | "PCI device %s\n", dev_name(&host_pci->dev)); |
Larry Finger | ce9626e | 2010-04-23 13:17:21 -0500 | [diff] [blame] | 839 | } else { |
| 840 | ssb_printk(KERN_ERR PFX "Failed to register PCI version" |
| 841 | " of SSB with error %d\n", err); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 842 | } |
| 843 | |
| 844 | return err; |
| 845 | } |
| 846 | EXPORT_SYMBOL(ssb_bus_pcibus_register); |
| 847 | #endif /* CONFIG_SSB_PCIHOST */ |
| 848 | |
| 849 | #ifdef CONFIG_SSB_PCMCIAHOST |
| 850 | int ssb_bus_pcmciabus_register(struct ssb_bus *bus, |
| 851 | struct pcmcia_device *pcmcia_dev, |
| 852 | unsigned long baseaddr) |
| 853 | { |
| 854 | int err; |
| 855 | |
| 856 | bus->bustype = SSB_BUSTYPE_PCMCIA; |
| 857 | bus->host_pcmcia = pcmcia_dev; |
| 858 | bus->ops = &ssb_pcmcia_ops; |
| 859 | |
| 860 | err = ssb_bus_register(bus, ssb_pcmcia_get_invariants, baseaddr); |
| 861 | if (!err) { |
| 862 | ssb_printk(KERN_INFO PFX "Sonics Silicon Backplane found on " |
| 863 | "PCMCIA device %s\n", pcmcia_dev->devname); |
| 864 | } |
| 865 | |
| 866 | return err; |
| 867 | } |
| 868 | EXPORT_SYMBOL(ssb_bus_pcmciabus_register); |
| 869 | #endif /* CONFIG_SSB_PCMCIAHOST */ |
| 870 | |
Albert Herranz | 24ea602 | 2009-09-08 19:30:12 +0200 | [diff] [blame] | 871 | #ifdef CONFIG_SSB_SDIOHOST |
| 872 | int ssb_bus_sdiobus_register(struct ssb_bus *bus, struct sdio_func *func, |
| 873 | unsigned int quirks) |
| 874 | { |
| 875 | int err; |
| 876 | |
| 877 | bus->bustype = SSB_BUSTYPE_SDIO; |
| 878 | bus->host_sdio = func; |
| 879 | bus->ops = &ssb_sdio_ops; |
| 880 | bus->quirks = quirks; |
| 881 | |
| 882 | err = ssb_bus_register(bus, ssb_sdio_get_invariants, ~0); |
| 883 | if (!err) { |
| 884 | ssb_printk(KERN_INFO PFX "Sonics Silicon Backplane found on " |
| 885 | "SDIO device %s\n", sdio_func_id(func)); |
| 886 | } |
| 887 | |
| 888 | return err; |
| 889 | } |
| 890 | EXPORT_SYMBOL(ssb_bus_sdiobus_register); |
| 891 | #endif /* CONFIG_SSB_PCMCIAHOST */ |
| 892 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 893 | int ssb_bus_ssbbus_register(struct ssb_bus *bus, |
| 894 | unsigned long baseaddr, |
| 895 | ssb_invariants_func_t get_invariants) |
| 896 | { |
| 897 | int err; |
| 898 | |
| 899 | bus->bustype = SSB_BUSTYPE_SSB; |
| 900 | bus->ops = &ssb_ssb_ops; |
| 901 | |
| 902 | err = ssb_bus_register(bus, get_invariants, baseaddr); |
| 903 | if (!err) { |
| 904 | ssb_printk(KERN_INFO PFX "Sonics Silicon Backplane found at " |
| 905 | "address 0x%08lX\n", baseaddr); |
| 906 | } |
| 907 | |
| 908 | return err; |
| 909 | } |
| 910 | |
| 911 | int __ssb_driver_register(struct ssb_driver *drv, struct module *owner) |
| 912 | { |
| 913 | drv->drv.name = drv->name; |
| 914 | drv->drv.bus = &ssb_bustype; |
| 915 | drv->drv.owner = owner; |
| 916 | |
| 917 | return driver_register(&drv->drv); |
| 918 | } |
| 919 | EXPORT_SYMBOL(__ssb_driver_register); |
| 920 | |
| 921 | void ssb_driver_unregister(struct ssb_driver *drv) |
| 922 | { |
| 923 | driver_unregister(&drv->drv); |
| 924 | } |
| 925 | EXPORT_SYMBOL(ssb_driver_unregister); |
| 926 | |
| 927 | void ssb_set_devtypedata(struct ssb_device *dev, void *data) |
| 928 | { |
| 929 | struct ssb_bus *bus = dev->bus; |
| 930 | struct ssb_device *ent; |
| 931 | int i; |
| 932 | |
| 933 | for (i = 0; i < bus->nr_devices; i++) { |
| 934 | ent = &(bus->devices[i]); |
| 935 | if (ent->id.vendor != dev->id.vendor) |
| 936 | continue; |
| 937 | if (ent->id.coreid != dev->id.coreid) |
| 938 | continue; |
| 939 | |
| 940 | ent->devtypedata = data; |
| 941 | } |
| 942 | } |
| 943 | EXPORT_SYMBOL(ssb_set_devtypedata); |
| 944 | |
| 945 | static u32 clkfactor_f6_resolve(u32 v) |
| 946 | { |
| 947 | /* map the magic values */ |
| 948 | switch (v) { |
| 949 | case SSB_CHIPCO_CLK_F6_2: |
| 950 | return 2; |
| 951 | case SSB_CHIPCO_CLK_F6_3: |
| 952 | return 3; |
| 953 | case SSB_CHIPCO_CLK_F6_4: |
| 954 | return 4; |
| 955 | case SSB_CHIPCO_CLK_F6_5: |
| 956 | return 5; |
| 957 | case SSB_CHIPCO_CLK_F6_6: |
| 958 | return 6; |
| 959 | case SSB_CHIPCO_CLK_F6_7: |
| 960 | return 7; |
| 961 | } |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | /* Calculate the speed the backplane would run at a given set of clockcontrol values */ |
| 966 | u32 ssb_calc_clock_rate(u32 plltype, u32 n, u32 m) |
| 967 | { |
| 968 | u32 n1, n2, clock, m1, m2, m3, mc; |
| 969 | |
| 970 | n1 = (n & SSB_CHIPCO_CLK_N1); |
| 971 | n2 = ((n & SSB_CHIPCO_CLK_N2) >> SSB_CHIPCO_CLK_N2_SHIFT); |
| 972 | |
| 973 | switch (plltype) { |
| 974 | case SSB_PLLTYPE_6: /* 100/200 or 120/240 only */ |
| 975 | if (m & SSB_CHIPCO_CLK_T6_MMASK) |
| 976 | return SSB_CHIPCO_CLK_T6_M0; |
| 977 | return SSB_CHIPCO_CLK_T6_M1; |
| 978 | case SSB_PLLTYPE_1: /* 48Mhz base, 3 dividers */ |
| 979 | case SSB_PLLTYPE_3: /* 25Mhz, 2 dividers */ |
| 980 | case SSB_PLLTYPE_4: /* 48Mhz, 4 dividers */ |
| 981 | case SSB_PLLTYPE_7: /* 25Mhz, 4 dividers */ |
| 982 | n1 = clkfactor_f6_resolve(n1); |
| 983 | n2 += SSB_CHIPCO_CLK_F5_BIAS; |
| 984 | break; |
| 985 | case SSB_PLLTYPE_2: /* 48Mhz, 4 dividers */ |
| 986 | n1 += SSB_CHIPCO_CLK_T2_BIAS; |
| 987 | n2 += SSB_CHIPCO_CLK_T2_BIAS; |
| 988 | SSB_WARN_ON(!((n1 >= 2) && (n1 <= 7))); |
| 989 | SSB_WARN_ON(!((n2 >= 5) && (n2 <= 23))); |
| 990 | break; |
| 991 | case SSB_PLLTYPE_5: /* 25Mhz, 4 dividers */ |
| 992 | return 100000000; |
| 993 | default: |
| 994 | SSB_WARN_ON(1); |
| 995 | } |
| 996 | |
| 997 | switch (plltype) { |
| 998 | case SSB_PLLTYPE_3: /* 25Mhz, 2 dividers */ |
| 999 | case SSB_PLLTYPE_7: /* 25Mhz, 4 dividers */ |
| 1000 | clock = SSB_CHIPCO_CLK_BASE2 * n1 * n2; |
| 1001 | break; |
| 1002 | default: |
| 1003 | clock = SSB_CHIPCO_CLK_BASE1 * n1 * n2; |
| 1004 | } |
| 1005 | if (!clock) |
| 1006 | return 0; |
| 1007 | |
| 1008 | m1 = (m & SSB_CHIPCO_CLK_M1); |
| 1009 | m2 = ((m & SSB_CHIPCO_CLK_M2) >> SSB_CHIPCO_CLK_M2_SHIFT); |
| 1010 | m3 = ((m & SSB_CHIPCO_CLK_M3) >> SSB_CHIPCO_CLK_M3_SHIFT); |
| 1011 | mc = ((m & SSB_CHIPCO_CLK_MC) >> SSB_CHIPCO_CLK_MC_SHIFT); |
| 1012 | |
| 1013 | switch (plltype) { |
| 1014 | case SSB_PLLTYPE_1: /* 48Mhz base, 3 dividers */ |
| 1015 | case SSB_PLLTYPE_3: /* 25Mhz, 2 dividers */ |
| 1016 | case SSB_PLLTYPE_4: /* 48Mhz, 4 dividers */ |
| 1017 | case SSB_PLLTYPE_7: /* 25Mhz, 4 dividers */ |
| 1018 | m1 = clkfactor_f6_resolve(m1); |
| 1019 | if ((plltype == SSB_PLLTYPE_1) || |
| 1020 | (plltype == SSB_PLLTYPE_3)) |
| 1021 | m2 += SSB_CHIPCO_CLK_F5_BIAS; |
| 1022 | else |
| 1023 | m2 = clkfactor_f6_resolve(m2); |
| 1024 | m3 = clkfactor_f6_resolve(m3); |
| 1025 | |
| 1026 | switch (mc) { |
| 1027 | case SSB_CHIPCO_CLK_MC_BYPASS: |
| 1028 | return clock; |
| 1029 | case SSB_CHIPCO_CLK_MC_M1: |
| 1030 | return (clock / m1); |
| 1031 | case SSB_CHIPCO_CLK_MC_M1M2: |
| 1032 | return (clock / (m1 * m2)); |
| 1033 | case SSB_CHIPCO_CLK_MC_M1M2M3: |
| 1034 | return (clock / (m1 * m2 * m3)); |
| 1035 | case SSB_CHIPCO_CLK_MC_M1M3: |
| 1036 | return (clock / (m1 * m3)); |
| 1037 | } |
| 1038 | return 0; |
| 1039 | case SSB_PLLTYPE_2: |
| 1040 | m1 += SSB_CHIPCO_CLK_T2_BIAS; |
| 1041 | m2 += SSB_CHIPCO_CLK_T2M2_BIAS; |
| 1042 | m3 += SSB_CHIPCO_CLK_T2_BIAS; |
| 1043 | SSB_WARN_ON(!((m1 >= 2) && (m1 <= 7))); |
| 1044 | SSB_WARN_ON(!((m2 >= 3) && (m2 <= 10))); |
| 1045 | SSB_WARN_ON(!((m3 >= 2) && (m3 <= 7))); |
| 1046 | |
| 1047 | if (!(mc & SSB_CHIPCO_CLK_T2MC_M1BYP)) |
| 1048 | clock /= m1; |
| 1049 | if (!(mc & SSB_CHIPCO_CLK_T2MC_M2BYP)) |
| 1050 | clock /= m2; |
| 1051 | if (!(mc & SSB_CHIPCO_CLK_T2MC_M3BYP)) |
| 1052 | clock /= m3; |
| 1053 | return clock; |
| 1054 | default: |
| 1055 | SSB_WARN_ON(1); |
| 1056 | } |
| 1057 | return 0; |
| 1058 | } |
| 1059 | |
| 1060 | /* Get the current speed the backplane is running at */ |
| 1061 | u32 ssb_clockspeed(struct ssb_bus *bus) |
| 1062 | { |
| 1063 | u32 rate; |
| 1064 | u32 plltype; |
| 1065 | u32 clkctl_n, clkctl_m; |
| 1066 | |
| 1067 | if (ssb_extif_available(&bus->extif)) |
| 1068 | ssb_extif_get_clockcontrol(&bus->extif, &plltype, |
| 1069 | &clkctl_n, &clkctl_m); |
| 1070 | else if (bus->chipco.dev) |
| 1071 | ssb_chipco_get_clockcontrol(&bus->chipco, &plltype, |
| 1072 | &clkctl_n, &clkctl_m); |
| 1073 | else |
| 1074 | return 0; |
| 1075 | |
| 1076 | if (bus->chip_id == 0x5365) { |
| 1077 | rate = 100000000; |
| 1078 | } else { |
| 1079 | rate = ssb_calc_clock_rate(plltype, clkctl_n, clkctl_m); |
| 1080 | if (plltype == SSB_PLLTYPE_3) /* 25Mhz, 2 dividers */ |
| 1081 | rate /= 2; |
| 1082 | } |
| 1083 | |
| 1084 | return rate; |
| 1085 | } |
| 1086 | EXPORT_SYMBOL(ssb_clockspeed); |
| 1087 | |
| 1088 | static u32 ssb_tmslow_reject_bitmask(struct ssb_device *dev) |
| 1089 | { |
Larry Finger | c272ef4 | 2007-11-09 16:56:25 -0600 | [diff] [blame] | 1090 | u32 rev = ssb_read32(dev, SSB_IDLOW) & SSB_IDLOW_SSBREV; |
| 1091 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1092 | /* The REJECT bit changed position in TMSLOW between |
| 1093 | * Backplane revisions. */ |
Larry Finger | c272ef4 | 2007-11-09 16:56:25 -0600 | [diff] [blame] | 1094 | switch (rev) { |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1095 | case SSB_IDLOW_SSBREV_22: |
| 1096 | return SSB_TMSLOW_REJECT_22; |
| 1097 | case SSB_IDLOW_SSBREV_23: |
| 1098 | return SSB_TMSLOW_REJECT_23; |
Larry Finger | c272ef4 | 2007-11-09 16:56:25 -0600 | [diff] [blame] | 1099 | case SSB_IDLOW_SSBREV_24: /* TODO - find the proper REJECT bits */ |
| 1100 | case SSB_IDLOW_SSBREV_25: /* same here */ |
| 1101 | case SSB_IDLOW_SSBREV_26: /* same here */ |
| 1102 | case SSB_IDLOW_SSBREV_27: /* same here */ |
| 1103 | return SSB_TMSLOW_REJECT_23; /* this is a guess */ |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1104 | default: |
Larry Finger | c272ef4 | 2007-11-09 16:56:25 -0600 | [diff] [blame] | 1105 | printk(KERN_INFO "ssb: Backplane Revision 0x%.8X\n", rev); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1106 | WARN_ON(1); |
| 1107 | } |
| 1108 | return (SSB_TMSLOW_REJECT_22 | SSB_TMSLOW_REJECT_23); |
| 1109 | } |
| 1110 | |
| 1111 | int ssb_device_is_enabled(struct ssb_device *dev) |
| 1112 | { |
| 1113 | u32 val; |
| 1114 | u32 reject; |
| 1115 | |
| 1116 | reject = ssb_tmslow_reject_bitmask(dev); |
| 1117 | val = ssb_read32(dev, SSB_TMSLOW); |
| 1118 | val &= SSB_TMSLOW_CLOCK | SSB_TMSLOW_RESET | reject; |
| 1119 | |
| 1120 | return (val == SSB_TMSLOW_CLOCK); |
| 1121 | } |
| 1122 | EXPORT_SYMBOL(ssb_device_is_enabled); |
| 1123 | |
| 1124 | static void ssb_flush_tmslow(struct ssb_device *dev) |
| 1125 | { |
| 1126 | /* Make _really_ sure the device has finished the TMSLOW |
| 1127 | * register write transaction, as we risk running into |
| 1128 | * a machine check exception otherwise. |
| 1129 | * Do this by reading the register back to commit the |
| 1130 | * PCI write and delay an additional usec for the device |
| 1131 | * to react to the change. */ |
| 1132 | ssb_read32(dev, SSB_TMSLOW); |
| 1133 | udelay(1); |
| 1134 | } |
| 1135 | |
| 1136 | void ssb_device_enable(struct ssb_device *dev, u32 core_specific_flags) |
| 1137 | { |
| 1138 | u32 val; |
| 1139 | |
| 1140 | ssb_device_disable(dev, core_specific_flags); |
| 1141 | ssb_write32(dev, SSB_TMSLOW, |
| 1142 | SSB_TMSLOW_RESET | SSB_TMSLOW_CLOCK | |
| 1143 | SSB_TMSLOW_FGC | core_specific_flags); |
| 1144 | ssb_flush_tmslow(dev); |
| 1145 | |
| 1146 | /* Clear SERR if set. This is a hw bug workaround. */ |
| 1147 | if (ssb_read32(dev, SSB_TMSHIGH) & SSB_TMSHIGH_SERR) |
| 1148 | ssb_write32(dev, SSB_TMSHIGH, 0); |
| 1149 | |
| 1150 | val = ssb_read32(dev, SSB_IMSTATE); |
| 1151 | if (val & (SSB_IMSTATE_IBE | SSB_IMSTATE_TO)) { |
| 1152 | val &= ~(SSB_IMSTATE_IBE | SSB_IMSTATE_TO); |
| 1153 | ssb_write32(dev, SSB_IMSTATE, val); |
| 1154 | } |
| 1155 | |
| 1156 | ssb_write32(dev, SSB_TMSLOW, |
| 1157 | SSB_TMSLOW_CLOCK | SSB_TMSLOW_FGC | |
| 1158 | core_specific_flags); |
| 1159 | ssb_flush_tmslow(dev); |
| 1160 | |
| 1161 | ssb_write32(dev, SSB_TMSLOW, SSB_TMSLOW_CLOCK | |
| 1162 | core_specific_flags); |
| 1163 | ssb_flush_tmslow(dev); |
| 1164 | } |
| 1165 | EXPORT_SYMBOL(ssb_device_enable); |
| 1166 | |
| 1167 | /* Wait for a bit in a register to get set or unset. |
| 1168 | * timeout is in units of ten-microseconds */ |
| 1169 | static int ssb_wait_bit(struct ssb_device *dev, u16 reg, u32 bitmask, |
| 1170 | int timeout, int set) |
| 1171 | { |
| 1172 | int i; |
| 1173 | u32 val; |
| 1174 | |
| 1175 | for (i = 0; i < timeout; i++) { |
| 1176 | val = ssb_read32(dev, reg); |
| 1177 | if (set) { |
| 1178 | if (val & bitmask) |
| 1179 | return 0; |
| 1180 | } else { |
| 1181 | if (!(val & bitmask)) |
| 1182 | return 0; |
| 1183 | } |
| 1184 | udelay(10); |
| 1185 | } |
| 1186 | printk(KERN_ERR PFX "Timeout waiting for bitmask %08X on " |
| 1187 | "register %04X to %s.\n", |
| 1188 | bitmask, reg, (set ? "set" : "clear")); |
| 1189 | |
| 1190 | return -ETIMEDOUT; |
| 1191 | } |
| 1192 | |
| 1193 | void ssb_device_disable(struct ssb_device *dev, u32 core_specific_flags) |
| 1194 | { |
| 1195 | u32 reject; |
| 1196 | |
| 1197 | if (ssb_read32(dev, SSB_TMSLOW) & SSB_TMSLOW_RESET) |
| 1198 | return; |
| 1199 | |
| 1200 | reject = ssb_tmslow_reject_bitmask(dev); |
| 1201 | ssb_write32(dev, SSB_TMSLOW, reject | SSB_TMSLOW_CLOCK); |
| 1202 | ssb_wait_bit(dev, SSB_TMSLOW, reject, 1000, 1); |
| 1203 | ssb_wait_bit(dev, SSB_TMSHIGH, SSB_TMSHIGH_BUSY, 1000, 0); |
| 1204 | ssb_write32(dev, SSB_TMSLOW, |
| 1205 | SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK | |
| 1206 | reject | SSB_TMSLOW_RESET | |
| 1207 | core_specific_flags); |
| 1208 | ssb_flush_tmslow(dev); |
| 1209 | |
| 1210 | ssb_write32(dev, SSB_TMSLOW, |
| 1211 | reject | SSB_TMSLOW_RESET | |
| 1212 | core_specific_flags); |
| 1213 | ssb_flush_tmslow(dev); |
| 1214 | } |
| 1215 | EXPORT_SYMBOL(ssb_device_disable); |
| 1216 | |
| 1217 | u32 ssb_dma_translation(struct ssb_device *dev) |
| 1218 | { |
| 1219 | switch (dev->bus->bustype) { |
| 1220 | case SSB_BUSTYPE_SSB: |
| 1221 | return 0; |
| 1222 | case SSB_BUSTYPE_PCI: |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1223 | return SSB_PCI_DMA; |
Michael Buesch | f225763 | 2008-06-20 11:50:29 +0200 | [diff] [blame] | 1224 | default: |
| 1225 | __ssb_dma_not_implemented(dev); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1226 | } |
| 1227 | return 0; |
| 1228 | } |
| 1229 | EXPORT_SYMBOL(ssb_dma_translation); |
| 1230 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1231 | int ssb_bus_may_powerdown(struct ssb_bus *bus) |
| 1232 | { |
| 1233 | struct ssb_chipcommon *cc; |
| 1234 | int err = 0; |
| 1235 | |
| 1236 | /* On buses where more than one core may be working |
| 1237 | * at a time, we must not powerdown stuff if there are |
| 1238 | * still cores that may want to run. */ |
| 1239 | if (bus->bustype == SSB_BUSTYPE_SSB) |
| 1240 | goto out; |
| 1241 | |
| 1242 | cc = &bus->chipco; |
Stefano Brivio | 881400a | 2008-04-06 17:05:07 +0200 | [diff] [blame] | 1243 | |
| 1244 | if (!cc->dev) |
| 1245 | goto out; |
| 1246 | if (cc->dev->id.revision < 5) |
| 1247 | goto out; |
| 1248 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1249 | ssb_chipco_set_clockmode(cc, SSB_CLKMODE_SLOW); |
| 1250 | err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 0); |
| 1251 | if (err) |
| 1252 | goto error; |
| 1253 | out: |
| 1254 | #ifdef CONFIG_SSB_DEBUG |
| 1255 | bus->powered_up = 0; |
| 1256 | #endif |
| 1257 | return err; |
| 1258 | error: |
| 1259 | ssb_printk(KERN_ERR PFX "Bus powerdown failed\n"); |
| 1260 | goto out; |
| 1261 | } |
| 1262 | EXPORT_SYMBOL(ssb_bus_may_powerdown); |
| 1263 | |
| 1264 | int ssb_bus_powerup(struct ssb_bus *bus, bool dynamic_pctl) |
| 1265 | { |
| 1266 | struct ssb_chipcommon *cc; |
| 1267 | int err; |
| 1268 | enum ssb_clkmode mode; |
| 1269 | |
| 1270 | err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 1); |
| 1271 | if (err) |
| 1272 | goto error; |
| 1273 | cc = &bus->chipco; |
| 1274 | mode = dynamic_pctl ? SSB_CLKMODE_DYNAMIC : SSB_CLKMODE_FAST; |
| 1275 | ssb_chipco_set_clockmode(cc, mode); |
| 1276 | |
| 1277 | #ifdef CONFIG_SSB_DEBUG |
| 1278 | bus->powered_up = 1; |
| 1279 | #endif |
| 1280 | return 0; |
| 1281 | error: |
| 1282 | ssb_printk(KERN_ERR PFX "Bus powerup failed\n"); |
| 1283 | return err; |
| 1284 | } |
| 1285 | EXPORT_SYMBOL(ssb_bus_powerup); |
| 1286 | |
| 1287 | u32 ssb_admatch_base(u32 adm) |
| 1288 | { |
| 1289 | u32 base = 0; |
| 1290 | |
| 1291 | switch (adm & SSB_ADM_TYPE) { |
| 1292 | case SSB_ADM_TYPE0: |
| 1293 | base = (adm & SSB_ADM_BASE0); |
| 1294 | break; |
| 1295 | case SSB_ADM_TYPE1: |
| 1296 | SSB_WARN_ON(adm & SSB_ADM_NEG); /* unsupported */ |
| 1297 | base = (adm & SSB_ADM_BASE1); |
| 1298 | break; |
| 1299 | case SSB_ADM_TYPE2: |
| 1300 | SSB_WARN_ON(adm & SSB_ADM_NEG); /* unsupported */ |
| 1301 | base = (adm & SSB_ADM_BASE2); |
| 1302 | break; |
| 1303 | default: |
| 1304 | SSB_WARN_ON(1); |
| 1305 | } |
| 1306 | |
| 1307 | return base; |
| 1308 | } |
| 1309 | EXPORT_SYMBOL(ssb_admatch_base); |
| 1310 | |
| 1311 | u32 ssb_admatch_size(u32 adm) |
| 1312 | { |
| 1313 | u32 size = 0; |
| 1314 | |
| 1315 | switch (adm & SSB_ADM_TYPE) { |
| 1316 | case SSB_ADM_TYPE0: |
| 1317 | size = ((adm & SSB_ADM_SZ0) >> SSB_ADM_SZ0_SHIFT); |
| 1318 | break; |
| 1319 | case SSB_ADM_TYPE1: |
| 1320 | SSB_WARN_ON(adm & SSB_ADM_NEG); /* unsupported */ |
| 1321 | size = ((adm & SSB_ADM_SZ1) >> SSB_ADM_SZ1_SHIFT); |
| 1322 | break; |
| 1323 | case SSB_ADM_TYPE2: |
| 1324 | SSB_WARN_ON(adm & SSB_ADM_NEG); /* unsupported */ |
| 1325 | size = ((adm & SSB_ADM_SZ2) >> SSB_ADM_SZ2_SHIFT); |
| 1326 | break; |
| 1327 | default: |
| 1328 | SSB_WARN_ON(1); |
| 1329 | } |
| 1330 | size = (1 << (size + 1)); |
| 1331 | |
| 1332 | return size; |
| 1333 | } |
| 1334 | EXPORT_SYMBOL(ssb_admatch_size); |
| 1335 | |
| 1336 | static int __init ssb_modinit(void) |
| 1337 | { |
| 1338 | int err; |
| 1339 | |
| 1340 | /* See the comment at the ssb_is_early_boot definition */ |
| 1341 | ssb_is_early_boot = 0; |
| 1342 | err = bus_register(&ssb_bustype); |
| 1343 | if (err) |
| 1344 | return err; |
| 1345 | |
| 1346 | /* Maybe we already registered some buses at early boot. |
| 1347 | * Check for this and attach them |
| 1348 | */ |
| 1349 | ssb_buses_lock(); |
| 1350 | err = ssb_attach_queued_buses(); |
| 1351 | ssb_buses_unlock(); |
Michael Buesch | e6c463e | 2009-09-05 11:18:47 +0200 | [diff] [blame] | 1352 | if (err) { |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1353 | bus_unregister(&ssb_bustype); |
Michael Buesch | e6c463e | 2009-09-05 11:18:47 +0200 | [diff] [blame] | 1354 | goto out; |
| 1355 | } |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1356 | |
| 1357 | err = b43_pci_ssb_bridge_init(); |
| 1358 | if (err) { |
| 1359 | ssb_printk(KERN_ERR "Broadcom 43xx PCI-SSB-bridge " |
Michael Buesch | aab547c | 2008-02-29 11:36:12 +0100 | [diff] [blame] | 1360 | "initialization failed\n"); |
| 1361 | /* don't fail SSB init because of this */ |
| 1362 | err = 0; |
| 1363 | } |
| 1364 | err = ssb_gige_init(); |
| 1365 | if (err) { |
| 1366 | ssb_printk(KERN_ERR "SSB Broadcom Gigabit Ethernet " |
| 1367 | "driver initialization failed\n"); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1368 | /* don't fail SSB init because of this */ |
| 1369 | err = 0; |
| 1370 | } |
Michael Buesch | e6c463e | 2009-09-05 11:18:47 +0200 | [diff] [blame] | 1371 | out: |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1372 | return err; |
| 1373 | } |
Michael Buesch | 8d8c90e | 2007-10-27 15:14:39 +0200 | [diff] [blame] | 1374 | /* ssb must be initialized after PCI but before the ssb drivers. |
| 1375 | * That means we must use some initcall between subsys_initcall |
| 1376 | * and device_initcall. */ |
| 1377 | fs_initcall(ssb_modinit); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1378 | |
| 1379 | static void __exit ssb_modexit(void) |
| 1380 | { |
Michael Buesch | aab547c | 2008-02-29 11:36:12 +0100 | [diff] [blame] | 1381 | ssb_gige_exit(); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1382 | b43_pci_ssb_bridge_exit(); |
| 1383 | bus_unregister(&ssb_bustype); |
| 1384 | } |
| 1385 | module_exit(ssb_modexit) |