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 static int bcma_bus_match(struct device *dev, struct device_driver *drv);
17 static int bcma_device_probe(struct device *dev);
18 static int bcma_device_remove(struct device *dev);
19 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
21 static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
23 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
24 return sprintf(buf, "0x%03X\n", core->id.manuf);
26 static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
28 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
29 return sprintf(buf, "0x%03X\n", core->id.id);
31 static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
33 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
34 return sprintf(buf, "0x%02X\n", core->id.rev);
36 static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
38 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
39 return sprintf(buf, "0x%X\n", core->id.class);
41 static struct device_attribute bcma_device_attrs[] = {
49 static struct bus_type bcma_bus_type = {
51 .match = bcma_bus_match,
52 .probe = bcma_device_probe,
53 .remove = bcma_device_remove,
54 .uevent = bcma_device_uevent,
55 .dev_attrs = bcma_device_attrs,
58 static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
60 struct bcma_device *core;
62 list_for_each_entry(core, &bus->cores, list) {
63 if (core->id.id == coreid)
69 static void bcma_release_core_dev(struct device *dev)
71 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
73 iounmap(core->io_addr);
75 iounmap(core->io_wrap);
79 static int bcma_register_cores(struct bcma_bus *bus)
81 struct bcma_device *core;
84 list_for_each_entry(core, &bus->cores, list) {
85 /* We support that cores ourself */
86 switch (core->id.id) {
87 case BCMA_CORE_CHIPCOMMON:
90 case BCMA_CORE_MIPS_74K:
94 core->dev.release = bcma_release_core_dev;
95 core->dev.bus = &bcma_bus_type;
96 dev_set_name(&core->dev, "bcma%d:%d", 0/*bus->num*/, dev_id);
98 switch (bus->hosttype) {
99 case BCMA_HOSTTYPE_PCI:
100 core->dev.parent = &bus->host_pci->dev;
101 core->dma_dev = &bus->host_pci->dev;
102 core->irq = bus->host_pci->irq;
104 case BCMA_HOSTTYPE_SOC:
105 core->dev.dma_mask = &core->dev.coherent_dma_mask;
106 core->dma_dev = &core->dev;
108 case BCMA_HOSTTYPE_SDIO:
112 err = device_register(&core->dev);
114 pr_err("Could not register dev for core 0x%03X\n",
118 core->dev_registered = true;
125 static void bcma_unregister_cores(struct bcma_bus *bus)
127 struct bcma_device *core, *tmp;
129 list_for_each_entry_safe(core, tmp, &bus->cores, list) {
130 list_del(&core->list);
131 if (core->dev_registered)
132 device_unregister(&core->dev);
136 int bcma_bus_register(struct bcma_bus *bus)
139 struct bcma_device *core;
141 /* Scan for devices (cores) */
142 err = bcma_bus_scan(bus);
144 pr_err("Failed to scan: %d\n", err);
149 core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
151 bus->drv_cc.core = core;
152 bcma_core_chipcommon_init(&bus->drv_cc);
156 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
158 bus->drv_mips.core = core;
159 bcma_core_mips_init(&bus->drv_mips);
163 core = bcma_find_core(bus, BCMA_CORE_PCIE);
165 bus->drv_pci.core = core;
166 bcma_core_pci_init(&bus->drv_pci);
169 /* Try to get SPROM */
170 err = bcma_sprom_get(bus);
171 if (err == -ENOENT) {
172 pr_err("No SPROM available\n");
174 pr_err("Failed to get SPROM: %d\n", err);
178 /* Register found cores */
179 bcma_register_cores(bus);
181 pr_info("Bus registered\n");
186 void bcma_bus_unregister(struct bcma_bus *bus)
188 bcma_unregister_cores(bus);
191 int __init bcma_bus_early_register(struct bcma_bus *bus,
192 struct bcma_device *core_cc,
193 struct bcma_device *core_mips)
196 struct bcma_device *core;
197 struct bcma_device_id match;
201 match.manuf = BCMA_MANUF_BCM;
202 match.id = BCMA_CORE_CHIPCOMMON;
203 match.class = BCMA_CL_SIM;
204 match.rev = BCMA_ANY_REV;
206 /* Scan for chip common core */
207 err = bcma_bus_scan_early(bus, &match, core_cc);
209 pr_err("Failed to scan for common core: %d\n", err);
213 match.manuf = BCMA_MANUF_MIPS;
214 match.id = BCMA_CORE_MIPS_74K;
215 match.class = BCMA_CL_SIM;
216 match.rev = BCMA_ANY_REV;
218 /* Scan for mips core */
219 err = bcma_bus_scan_early(bus, &match, core_mips);
221 pr_err("Failed to scan for mips core: %d\n", err);
226 core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
228 bus->drv_cc.core = core;
229 bcma_core_chipcommon_init(&bus->drv_cc);
233 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
235 bus->drv_mips.core = core;
236 bcma_core_mips_init(&bus->drv_mips);
239 pr_info("Early bus registered\n");
245 int bcma_bus_resume(struct bcma_bus *bus)
247 struct bcma_device *core;
250 core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
252 bus->drv_cc.setup_done = false;
253 bcma_core_chipcommon_init(&bus->drv_cc);
260 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
262 drv->drv.name = drv->name;
263 drv->drv.bus = &bcma_bus_type;
264 drv->drv.owner = owner;
266 return driver_register(&drv->drv);
268 EXPORT_SYMBOL_GPL(__bcma_driver_register);
270 void bcma_driver_unregister(struct bcma_driver *drv)
272 driver_unregister(&drv->drv);
274 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
276 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
278 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
279 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
280 const struct bcma_device_id *cid = &core->id;
281 const struct bcma_device_id *did;
283 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
284 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
285 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
286 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
287 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
293 static int bcma_device_probe(struct device *dev)
295 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
296 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
301 err = adrv->probe(core);
306 static int bcma_device_remove(struct device *dev)
308 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
309 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
318 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
320 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
322 return add_uevent_var(env,
323 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
324 core->id.manuf, core->id.id,
325 core->id.rev, core->id.class);
328 static int __init bcma_modinit(void)
332 err = bus_register(&bcma_bus_type);
336 #ifdef CONFIG_BCMA_HOST_PCI
337 err = bcma_host_pci_init();
339 pr_err("PCI host initialization failed\n");
346 fs_initcall(bcma_modinit);
348 static void __exit bcma_modexit(void)
350 #ifdef CONFIG_BCMA_HOST_PCI
351 bcma_host_pci_exit();
353 bus_unregister(&bcma_bus_type);
355 module_exit(bcma_modexit)