2 * Broadcom specific AMBA
5 * Licensed under the GNU/GPL. See COPYING for details.
8 #include "bcma_private.h"
9 #include <linux/module.h>
10 #include <linux/platform_device.h>
11 #include <linux/bcma/bcma.h>
12 #include <linux/slab.h>
14 MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
15 MODULE_LICENSE("GPL");
17 /* contains the number the next bus should get. */
18 static unsigned int bcma_bus_next_num = 0;
20 /* bcma_buses_mutex locks the bcma_bus_next_num */
21 static DEFINE_MUTEX(bcma_buses_mutex);
23 static int bcma_bus_match(struct device *dev, struct device_driver *drv);
24 static int bcma_device_probe(struct device *dev);
25 static int bcma_device_remove(struct device *dev);
26 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
28 static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
30 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
31 return sprintf(buf, "0x%03X\n", core->id.manuf);
33 static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
35 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
36 return sprintf(buf, "0x%03X\n", core->id.id);
38 static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
40 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
41 return sprintf(buf, "0x%02X\n", core->id.rev);
43 static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
45 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
46 return sprintf(buf, "0x%X\n", core->id.class);
48 static struct device_attribute bcma_device_attrs[] = {
56 static struct bus_type bcma_bus_type = {
58 .match = bcma_bus_match,
59 .probe = bcma_device_probe,
60 .remove = bcma_device_remove,
61 .uevent = bcma_device_uevent,
62 .dev_attrs = bcma_device_attrs,
65 static u16 bcma_cc_core_id(struct bcma_bus *bus)
67 if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
68 return BCMA_CORE_4706_CHIPCOMMON;
69 return BCMA_CORE_CHIPCOMMON;
72 struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
74 struct bcma_device *core;
76 list_for_each_entry(core, &bus->cores, list) {
77 if (core->id.id == coreid)
82 EXPORT_SYMBOL_GPL(bcma_find_core);
84 struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
87 struct bcma_device *core;
89 list_for_each_entry(core, &bus->cores, list) {
90 if (core->id.id == coreid && core->core_unit == unit)
96 static void bcma_release_core_dev(struct device *dev)
98 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
100 iounmap(core->io_addr);
102 iounmap(core->io_wrap);
106 static int bcma_register_cores(struct bcma_bus *bus)
108 struct bcma_device *core;
111 list_for_each_entry(core, &bus->cores, list) {
112 /* We support that cores ourself */
113 switch (core->id.id) {
114 case BCMA_CORE_4706_CHIPCOMMON:
115 case BCMA_CORE_CHIPCOMMON:
118 case BCMA_CORE_MIPS_74K:
119 case BCMA_CORE_4706_MAC_GBIT_COMMON:
123 /* Only first GMAC core on BCM4706 is connected and working */
124 if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
128 core->dev.release = bcma_release_core_dev;
129 core->dev.bus = &bcma_bus_type;
130 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
132 switch (bus->hosttype) {
133 case BCMA_HOSTTYPE_PCI:
134 core->dev.parent = &bus->host_pci->dev;
135 core->dma_dev = &bus->host_pci->dev;
136 core->irq = bus->host_pci->irq;
138 case BCMA_HOSTTYPE_SOC:
139 core->dev.dma_mask = &core->dev.coherent_dma_mask;
140 core->dma_dev = &core->dev;
142 case BCMA_HOSTTYPE_SDIO:
146 err = device_register(&core->dev);
149 "Could not register dev for core 0x%03X\n",
153 core->dev_registered = true;
157 #ifdef CONFIG_BCMA_DRIVER_MIPS
158 if (bus->drv_cc.pflash.present) {
159 err = platform_device_register(&bcma_pflash_dev);
161 bcma_err(bus, "Error registering parallel flash\n");
165 #ifdef CONFIG_BCMA_SFLASH
166 if (bus->drv_cc.sflash.present) {
167 err = platform_device_register(&bcma_sflash_dev);
169 bcma_err(bus, "Error registering serial flash\n");
173 #ifdef CONFIG_BCMA_NFLASH
174 if (bus->drv_cc.nflash.present) {
175 err = platform_device_register(&bcma_nflash_dev);
177 bcma_err(bus, "Error registering NAND flash\n");
180 err = bcma_gpio_init(&bus->drv_cc);
181 if (err == -ENOTSUPP)
182 bcma_debug(bus, "GPIO driver not activated\n");
184 bcma_err(bus, "Error registering GPIO driver: %i\n", err);
186 if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
187 err = bcma_chipco_watchdog_register(&bus->drv_cc);
189 bcma_err(bus, "Error registering watchdog driver\n");
195 static void bcma_unregister_cores(struct bcma_bus *bus)
197 struct bcma_device *core, *tmp;
199 list_for_each_entry_safe(core, tmp, &bus->cores, list) {
200 list_del(&core->list);
201 if (core->dev_registered)
202 device_unregister(&core->dev);
204 if (bus->hosttype == BCMA_HOSTTYPE_SOC)
205 platform_device_unregister(bus->drv_cc.watchdog);
208 int bcma_bus_register(struct bcma_bus *bus)
211 struct bcma_device *core;
213 mutex_lock(&bcma_buses_mutex);
214 bus->num = bcma_bus_next_num++;
215 mutex_unlock(&bcma_buses_mutex);
217 /* Scan for devices (cores) */
218 err = bcma_bus_scan(bus);
220 bcma_err(bus, "Failed to scan: %d\n", err);
224 /* Early init CC core */
225 core = bcma_find_core(bus, bcma_cc_core_id(bus));
227 bus->drv_cc.core = core;
228 bcma_core_chipcommon_early_init(&bus->drv_cc);
231 /* Try to get SPROM */
232 err = bcma_sprom_get(bus);
233 if (err == -ENOENT) {
234 bcma_err(bus, "No SPROM available\n");
236 bcma_err(bus, "Failed to get SPROM: %d\n", err);
239 core = bcma_find_core(bus, bcma_cc_core_id(bus));
241 bus->drv_cc.core = core;
242 bcma_core_chipcommon_init(&bus->drv_cc);
246 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
248 bus->drv_mips.core = core;
249 bcma_core_mips_init(&bus->drv_mips);
253 core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
255 bus->drv_pci[0].core = core;
256 bcma_core_pci_init(&bus->drv_pci[0]);
260 core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
262 bus->drv_pci[1].core = core;
263 bcma_core_pci_init(&bus->drv_pci[1]);
266 /* Init GBIT MAC COMMON core */
267 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
269 bus->drv_gmac_cmn.core = core;
270 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
273 /* Register found cores */
274 bcma_register_cores(bus);
276 bcma_info(bus, "Bus registered\n");
281 void bcma_bus_unregister(struct bcma_bus *bus)
283 struct bcma_device *cores[3];
286 err = bcma_gpio_unregister(&bus->drv_cc);
288 bcma_err(bus, "Some GPIOs are still in use.\n");
290 bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
292 cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
293 cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
294 cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
296 bcma_unregister_cores(bus);
303 int __init bcma_bus_early_register(struct bcma_bus *bus,
304 struct bcma_device *core_cc,
305 struct bcma_device *core_mips)
308 struct bcma_device *core;
309 struct bcma_device_id match;
313 match.manuf = BCMA_MANUF_BCM;
314 match.id = bcma_cc_core_id(bus);
315 match.class = BCMA_CL_SIM;
316 match.rev = BCMA_ANY_REV;
318 /* Scan for chip common core */
319 err = bcma_bus_scan_early(bus, &match, core_cc);
321 bcma_err(bus, "Failed to scan for common core: %d\n", err);
325 match.manuf = BCMA_MANUF_MIPS;
326 match.id = BCMA_CORE_MIPS_74K;
327 match.class = BCMA_CL_SIM;
328 match.rev = BCMA_ANY_REV;
330 /* Scan for mips core */
331 err = bcma_bus_scan_early(bus, &match, core_mips);
333 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
337 /* Early init CC core */
338 core = bcma_find_core(bus, bcma_cc_core_id(bus));
340 bus->drv_cc.core = core;
341 bcma_core_chipcommon_early_init(&bus->drv_cc);
344 /* Early init MIPS core */
345 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
347 bus->drv_mips.core = core;
348 bcma_core_mips_early_init(&bus->drv_mips);
351 bcma_info(bus, "Early bus registered\n");
357 int bcma_bus_suspend(struct bcma_bus *bus)
359 struct bcma_device *core;
361 list_for_each_entry(core, &bus->cores, list) {
362 struct device_driver *drv = core->dev.driver;
364 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
372 int bcma_bus_resume(struct bcma_bus *bus)
374 struct bcma_device *core;
377 if (bus->drv_cc.core) {
378 bus->drv_cc.setup_done = false;
379 bcma_core_chipcommon_init(&bus->drv_cc);
382 list_for_each_entry(core, &bus->cores, list) {
383 struct device_driver *drv = core->dev.driver;
385 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
395 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
397 drv->drv.name = drv->name;
398 drv->drv.bus = &bcma_bus_type;
399 drv->drv.owner = owner;
401 return driver_register(&drv->drv);
403 EXPORT_SYMBOL_GPL(__bcma_driver_register);
405 void bcma_driver_unregister(struct bcma_driver *drv)
407 driver_unregister(&drv->drv);
409 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
411 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
413 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
414 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
415 const struct bcma_device_id *cid = &core->id;
416 const struct bcma_device_id *did;
418 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
419 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
420 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
421 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
422 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
428 static int bcma_device_probe(struct device *dev)
430 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
431 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
436 err = adrv->probe(core);
441 static int bcma_device_remove(struct device *dev)
443 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
444 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
453 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
455 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
457 return add_uevent_var(env,
458 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
459 core->id.manuf, core->id.id,
460 core->id.rev, core->id.class);
463 static int __init bcma_modinit(void)
467 err = bus_register(&bcma_bus_type);
471 #ifdef CONFIG_BCMA_HOST_PCI
472 err = bcma_host_pci_init();
474 pr_err("PCI host initialization failed\n");
481 fs_initcall(bcma_modinit);
483 static void __exit bcma_modexit(void)
485 #ifdef CONFIG_BCMA_HOST_PCI
486 bcma_host_pci_exit();
488 bus_unregister(&bcma_bus_type);
490 module_exit(bcma_modexit)