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/bcma/bcma.h>
11 #include <linux/slab.h>
13 MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
14 MODULE_LICENSE("GPL");
16 /* contains the number the next bus should get. */
17 static unsigned int bcma_bus_next_num = 0;
19 /* bcma_buses_mutex locks the bcma_bus_next_num */
20 static DEFINE_MUTEX(bcma_buses_mutex);
22 static int bcma_bus_match(struct device *dev, struct device_driver *drv);
23 static int bcma_device_probe(struct device *dev);
24 static int bcma_device_remove(struct device *dev);
25 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
27 static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
29 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
30 return sprintf(buf, "0x%03X\n", core->id.manuf);
32 static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
34 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
35 return sprintf(buf, "0x%03X\n", core->id.id);
37 static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
39 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
40 return sprintf(buf, "0x%02X\n", core->id.rev);
42 static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
44 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
45 return sprintf(buf, "0x%X\n", core->id.class);
47 static struct device_attribute bcma_device_attrs[] = {
55 static struct bus_type bcma_bus_type = {
57 .match = bcma_bus_match,
58 .probe = bcma_device_probe,
59 .remove = bcma_device_remove,
60 .uevent = bcma_device_uevent,
61 .dev_attrs = bcma_device_attrs,
64 struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
66 struct bcma_device *core;
68 list_for_each_entry(core, &bus->cores, list) {
69 if (core->id.id == coreid)
74 EXPORT_SYMBOL_GPL(bcma_find_core);
76 static void bcma_release_core_dev(struct device *dev)
78 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
80 iounmap(core->io_addr);
82 iounmap(core->io_wrap);
86 static int bcma_register_cores(struct bcma_bus *bus)
88 struct bcma_device *core;
91 list_for_each_entry(core, &bus->cores, list) {
92 /* We support that cores ourself */
93 switch (core->id.id) {
94 case BCMA_CORE_CHIPCOMMON:
97 case BCMA_CORE_MIPS_74K:
101 core->dev.release = bcma_release_core_dev;
102 core->dev.bus = &bcma_bus_type;
103 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
105 switch (bus->hosttype) {
106 case BCMA_HOSTTYPE_PCI:
107 core->dev.parent = &bus->host_pci->dev;
108 core->dma_dev = &bus->host_pci->dev;
109 core->irq = bus->host_pci->irq;
111 case BCMA_HOSTTYPE_SOC:
112 core->dev.dma_mask = &core->dev.coherent_dma_mask;
113 core->dma_dev = &core->dev;
115 case BCMA_HOSTTYPE_SDIO:
119 err = device_register(&core->dev);
121 pr_err("Could not register dev for core 0x%03X\n",
125 core->dev_registered = true;
132 static void bcma_unregister_cores(struct bcma_bus *bus)
134 struct bcma_device *core;
136 list_for_each_entry(core, &bus->cores, list) {
137 if (core->dev_registered)
138 device_unregister(&core->dev);
142 int __devinit bcma_bus_register(struct bcma_bus *bus)
145 struct bcma_device *core;
147 mutex_lock(&bcma_buses_mutex);
148 bus->num = bcma_bus_next_num++;
149 mutex_unlock(&bcma_buses_mutex);
151 /* Scan for devices (cores) */
152 err = bcma_bus_scan(bus);
154 pr_err("Failed to scan: %d\n", err);
159 core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
161 bus->drv_cc.core = core;
162 bcma_core_chipcommon_init(&bus->drv_cc);
166 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
168 bus->drv_mips.core = core;
169 bcma_core_mips_init(&bus->drv_mips);
173 core = bcma_find_core(bus, BCMA_CORE_PCIE);
175 bus->drv_pci.core = core;
176 bcma_core_pci_init(&bus->drv_pci);
179 /* Try to get SPROM */
180 err = bcma_sprom_get(bus);
181 if (err == -ENOENT) {
182 pr_err("No SPROM available\n");
184 pr_err("Failed to get SPROM: %d\n", err);
186 /* Register found cores */
187 bcma_register_cores(bus);
189 pr_info("Bus registered\n");
194 void bcma_bus_unregister(struct bcma_bus *bus)
196 bcma_unregister_cores(bus);
199 int __init bcma_bus_early_register(struct bcma_bus *bus,
200 struct bcma_device *core_cc,
201 struct bcma_device *core_mips)
204 struct bcma_device *core;
205 struct bcma_device_id match;
209 match.manuf = BCMA_MANUF_BCM;
210 match.id = BCMA_CORE_CHIPCOMMON;
211 match.class = BCMA_CL_SIM;
212 match.rev = BCMA_ANY_REV;
214 /* Scan for chip common core */
215 err = bcma_bus_scan_early(bus, &match, core_cc);
217 pr_err("Failed to scan for common core: %d\n", err);
221 match.manuf = BCMA_MANUF_MIPS;
222 match.id = BCMA_CORE_MIPS_74K;
223 match.class = BCMA_CL_SIM;
224 match.rev = BCMA_ANY_REV;
226 /* Scan for mips core */
227 err = bcma_bus_scan_early(bus, &match, core_mips);
229 pr_err("Failed to scan for mips core: %d\n", err);
234 core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
236 bus->drv_cc.core = core;
237 bcma_core_chipcommon_init(&bus->drv_cc);
241 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
243 bus->drv_mips.core = core;
244 bcma_core_mips_init(&bus->drv_mips);
247 pr_info("Early bus registered\n");
253 int bcma_bus_suspend(struct bcma_bus *bus)
255 struct bcma_device *core;
257 list_for_each_entry(core, &bus->cores, list) {
258 struct device_driver *drv = core->dev.driver;
260 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
268 int bcma_bus_resume(struct bcma_bus *bus)
270 struct bcma_device *core;
273 core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
275 bus->drv_cc.setup_done = false;
276 bcma_core_chipcommon_init(&bus->drv_cc);
279 list_for_each_entry(core, &bus->cores, list) {
280 struct device_driver *drv = core->dev.driver;
282 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
292 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
294 drv->drv.name = drv->name;
295 drv->drv.bus = &bcma_bus_type;
296 drv->drv.owner = owner;
298 return driver_register(&drv->drv);
300 EXPORT_SYMBOL_GPL(__bcma_driver_register);
302 void bcma_driver_unregister(struct bcma_driver *drv)
304 driver_unregister(&drv->drv);
306 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
308 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
310 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
311 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
312 const struct bcma_device_id *cid = &core->id;
313 const struct bcma_device_id *did;
315 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
316 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
317 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
318 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
319 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
325 static int bcma_device_probe(struct device *dev)
327 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
328 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
333 err = adrv->probe(core);
338 static int bcma_device_remove(struct device *dev)
340 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
341 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
350 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
352 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
354 return add_uevent_var(env,
355 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
356 core->id.manuf, core->id.id,
357 core->id.rev, core->id.class);
360 static int __init bcma_modinit(void)
364 err = bus_register(&bcma_bus_type);
368 #ifdef CONFIG_BCMA_HOST_PCI
369 err = bcma_host_pci_init();
371 pr_err("PCI host initialization failed\n");
378 fs_initcall(bcma_modinit);
380 static void __exit bcma_modexit(void)
382 #ifdef CONFIG_BCMA_HOST_PCI
383 bcma_host_pci_exit();
385 bus_unregister(&bcma_bus_type);
387 module_exit(bcma_modexit)