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 static u16 bcma_cc_core_id(struct bcma_bus *bus)
66 if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
67 return BCMA_CORE_4706_CHIPCOMMON;
68 return BCMA_CORE_CHIPCOMMON;
71 struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
73 struct bcma_device *core;
75 list_for_each_entry(core, &bus->cores, list) {
76 if (core->id.id == coreid)
81 EXPORT_SYMBOL_GPL(bcma_find_core);
83 static void bcma_release_core_dev(struct device *dev)
85 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
87 iounmap(core->io_addr);
89 iounmap(core->io_wrap);
93 static int bcma_register_cores(struct bcma_bus *bus)
95 struct bcma_device *core;
98 list_for_each_entry(core, &bus->cores, list) {
99 /* We support that cores ourself */
100 switch (core->id.id) {
101 case BCMA_CORE_4706_CHIPCOMMON:
102 case BCMA_CORE_CHIPCOMMON:
105 case BCMA_CORE_MIPS_74K:
106 case BCMA_CORE_4706_MAC_GBIT_COMMON:
110 core->dev.release = bcma_release_core_dev;
111 core->dev.bus = &bcma_bus_type;
112 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
114 switch (bus->hosttype) {
115 case BCMA_HOSTTYPE_PCI:
116 core->dev.parent = &bus->host_pci->dev;
117 core->dma_dev = &bus->host_pci->dev;
118 core->irq = bus->host_pci->irq;
120 case BCMA_HOSTTYPE_SOC:
121 core->dev.dma_mask = &core->dev.coherent_dma_mask;
122 core->dma_dev = &core->dev;
124 case BCMA_HOSTTYPE_SDIO:
128 err = device_register(&core->dev);
131 "Could not register dev for core 0x%03X\n",
135 core->dev_registered = true;
142 static void bcma_unregister_cores(struct bcma_bus *bus)
144 struct bcma_device *core;
146 list_for_each_entry(core, &bus->cores, list) {
147 if (core->dev_registered)
148 device_unregister(&core->dev);
152 int __devinit bcma_bus_register(struct bcma_bus *bus)
155 struct bcma_device *core;
157 mutex_lock(&bcma_buses_mutex);
158 bus->num = bcma_bus_next_num++;
159 mutex_unlock(&bcma_buses_mutex);
161 /* Scan for devices (cores) */
162 err = bcma_bus_scan(bus);
164 bcma_err(bus, "Failed to scan: %d\n", err);
169 core = bcma_find_core(bus, bcma_cc_core_id(bus));
171 bus->drv_cc.core = core;
172 bcma_core_chipcommon_init(&bus->drv_cc);
176 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
178 bus->drv_mips.core = core;
179 bcma_core_mips_init(&bus->drv_mips);
183 core = bcma_find_core(bus, BCMA_CORE_PCIE);
185 bus->drv_pci.core = core;
186 bcma_core_pci_init(&bus->drv_pci);
189 /* Init GBIT MAC COMMON core */
190 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
192 bus->drv_gmac_cmn.core = core;
193 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
196 /* Try to get SPROM */
197 err = bcma_sprom_get(bus);
198 if (err == -ENOENT) {
199 bcma_err(bus, "No SPROM available\n");
201 bcma_err(bus, "Failed to get SPROM: %d\n", err);
203 /* Register found cores */
204 bcma_register_cores(bus);
206 bcma_info(bus, "Bus registered\n");
211 void bcma_bus_unregister(struct bcma_bus *bus)
213 bcma_unregister_cores(bus);
216 int __init bcma_bus_early_register(struct bcma_bus *bus,
217 struct bcma_device *core_cc,
218 struct bcma_device *core_mips)
221 struct bcma_device *core;
222 struct bcma_device_id match;
226 match.manuf = BCMA_MANUF_BCM;
227 match.id = bcma_cc_core_id(bus);
228 match.class = BCMA_CL_SIM;
229 match.rev = BCMA_ANY_REV;
231 /* Scan for chip common core */
232 err = bcma_bus_scan_early(bus, &match, core_cc);
234 bcma_err(bus, "Failed to scan for common core: %d\n", err);
238 match.manuf = BCMA_MANUF_MIPS;
239 match.id = BCMA_CORE_MIPS_74K;
240 match.class = BCMA_CL_SIM;
241 match.rev = BCMA_ANY_REV;
243 /* Scan for mips core */
244 err = bcma_bus_scan_early(bus, &match, core_mips);
246 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
251 core = bcma_find_core(bus, bcma_cc_core_id(bus));
253 bus->drv_cc.core = core;
254 bcma_core_chipcommon_init(&bus->drv_cc);
258 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
260 bus->drv_mips.core = core;
261 bcma_core_mips_init(&bus->drv_mips);
264 bcma_info(bus, "Early bus registered\n");
270 int bcma_bus_suspend(struct bcma_bus *bus)
272 struct bcma_device *core;
274 list_for_each_entry(core, &bus->cores, list) {
275 struct device_driver *drv = core->dev.driver;
277 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
285 int bcma_bus_resume(struct bcma_bus *bus)
287 struct bcma_device *core;
290 if (bus->drv_cc.core) {
291 bus->drv_cc.setup_done = false;
292 bcma_core_chipcommon_init(&bus->drv_cc);
295 list_for_each_entry(core, &bus->cores, list) {
296 struct device_driver *drv = core->dev.driver;
298 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
308 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
310 drv->drv.name = drv->name;
311 drv->drv.bus = &bcma_bus_type;
312 drv->drv.owner = owner;
314 return driver_register(&drv->drv);
316 EXPORT_SYMBOL_GPL(__bcma_driver_register);
318 void bcma_driver_unregister(struct bcma_driver *drv)
320 driver_unregister(&drv->drv);
322 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
324 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
326 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
327 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
328 const struct bcma_device_id *cid = &core->id;
329 const struct bcma_device_id *did;
331 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
332 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
333 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
334 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
335 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
341 static int bcma_device_probe(struct device *dev)
343 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
344 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
349 err = adrv->probe(core);
354 static int bcma_device_remove(struct device *dev)
356 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
357 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
366 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
368 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
370 return add_uevent_var(env,
371 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
372 core->id.manuf, core->id.id,
373 core->id.rev, core->id.class);
376 static int __init bcma_modinit(void)
380 err = bus_register(&bcma_bus_type);
384 #ifdef CONFIG_BCMA_HOST_PCI
385 err = bcma_host_pci_init();
387 pr_err("PCI host initialization failed\n");
394 fs_initcall(bcma_modinit);
396 static void __exit bcma_modexit(void)
398 #ifdef CONFIG_BCMA_HOST_PCI
399 bcma_host_pci_exit();
401 bus_unregister(&bcma_bus_type);
403 module_exit(bcma_modexit)