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 static void bcma_release_core_dev(struct device *dev)
86 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
88 iounmap(core->io_addr);
90 iounmap(core->io_wrap);
94 static int bcma_register_cores(struct bcma_bus *bus)
96 struct bcma_device *core;
99 list_for_each_entry(core, &bus->cores, list) {
100 /* We support that cores ourself */
101 switch (core->id.id) {
102 case BCMA_CORE_4706_CHIPCOMMON:
103 case BCMA_CORE_CHIPCOMMON:
106 case BCMA_CORE_MIPS_74K:
107 case BCMA_CORE_4706_MAC_GBIT_COMMON:
111 core->dev.release = bcma_release_core_dev;
112 core->dev.bus = &bcma_bus_type;
113 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
115 switch (bus->hosttype) {
116 case BCMA_HOSTTYPE_PCI:
117 core->dev.parent = &bus->host_pci->dev;
118 core->dma_dev = &bus->host_pci->dev;
119 core->irq = bus->host_pci->irq;
121 case BCMA_HOSTTYPE_SOC:
122 core->dev.dma_mask = &core->dev.coherent_dma_mask;
123 core->dma_dev = &core->dev;
125 case BCMA_HOSTTYPE_SDIO:
129 err = device_register(&core->dev);
132 "Could not register dev for core 0x%03X\n",
136 core->dev_registered = true;
140 #ifdef CONFIG_BCMA_SFLASH
141 if (bus->drv_cc.sflash.present) {
142 err = platform_device_register(&bcma_sflash_dev);
144 bcma_err(bus, "Error registering serial flash\n");
148 #ifdef CONFIG_BCMA_NFLASH
149 if (bus->drv_cc.nflash.present) {
150 err = platform_device_register(&bcma_nflash_dev);
152 bcma_err(bus, "Error registering NAND flash\n");
159 static void bcma_unregister_cores(struct bcma_bus *bus)
161 struct bcma_device *core;
163 list_for_each_entry(core, &bus->cores, list) {
164 if (core->dev_registered)
165 device_unregister(&core->dev);
169 int __devinit bcma_bus_register(struct bcma_bus *bus)
172 struct bcma_device *core;
174 mutex_lock(&bcma_buses_mutex);
175 bus->num = bcma_bus_next_num++;
176 mutex_unlock(&bcma_buses_mutex);
178 /* Scan for devices (cores) */
179 err = bcma_bus_scan(bus);
181 bcma_err(bus, "Failed to scan: %d\n", err);
185 /* Early init CC core */
186 core = bcma_find_core(bus, bcma_cc_core_id(bus));
188 bus->drv_cc.core = core;
189 bcma_core_chipcommon_early_init(&bus->drv_cc);
192 /* Try to get SPROM */
193 err = bcma_sprom_get(bus);
194 if (err == -ENOENT) {
195 bcma_err(bus, "No SPROM available\n");
197 bcma_err(bus, "Failed to get SPROM: %d\n", err);
200 core = bcma_find_core(bus, bcma_cc_core_id(bus));
202 bus->drv_cc.core = core;
203 bcma_core_chipcommon_init(&bus->drv_cc);
207 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
209 bus->drv_mips.core = core;
210 bcma_core_mips_init(&bus->drv_mips);
214 core = bcma_find_core(bus, BCMA_CORE_PCIE);
216 bus->drv_pci.core = core;
217 bcma_core_pci_init(&bus->drv_pci);
220 /* Init GBIT MAC COMMON core */
221 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
223 bus->drv_gmac_cmn.core = core;
224 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
227 /* Register found cores */
228 bcma_register_cores(bus);
230 bcma_info(bus, "Bus registered\n");
235 void bcma_bus_unregister(struct bcma_bus *bus)
237 struct bcma_device *cores[3];
239 cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
240 cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
241 cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
243 bcma_unregister_cores(bus);
250 int __init bcma_bus_early_register(struct bcma_bus *bus,
251 struct bcma_device *core_cc,
252 struct bcma_device *core_mips)
255 struct bcma_device *core;
256 struct bcma_device_id match;
260 match.manuf = BCMA_MANUF_BCM;
261 match.id = bcma_cc_core_id(bus);
262 match.class = BCMA_CL_SIM;
263 match.rev = BCMA_ANY_REV;
265 /* Scan for chip common core */
266 err = bcma_bus_scan_early(bus, &match, core_cc);
268 bcma_err(bus, "Failed to scan for common core: %d\n", err);
272 match.manuf = BCMA_MANUF_MIPS;
273 match.id = BCMA_CORE_MIPS_74K;
274 match.class = BCMA_CL_SIM;
275 match.rev = BCMA_ANY_REV;
277 /* Scan for mips core */
278 err = bcma_bus_scan_early(bus, &match, core_mips);
280 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
284 /* Early init CC core */
285 core = bcma_find_core(bus, bcma_cc_core_id(bus));
287 bus->drv_cc.core = core;
288 bcma_core_chipcommon_early_init(&bus->drv_cc);
291 /* Early init MIPS core */
292 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
294 bus->drv_mips.core = core;
295 bcma_core_mips_early_init(&bus->drv_mips);
298 bcma_info(bus, "Early bus registered\n");
304 int bcma_bus_suspend(struct bcma_bus *bus)
306 struct bcma_device *core;
308 list_for_each_entry(core, &bus->cores, list) {
309 struct device_driver *drv = core->dev.driver;
311 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
319 int bcma_bus_resume(struct bcma_bus *bus)
321 struct bcma_device *core;
324 if (bus->drv_cc.core) {
325 bus->drv_cc.setup_done = false;
326 bcma_core_chipcommon_init(&bus->drv_cc);
329 list_for_each_entry(core, &bus->cores, list) {
330 struct device_driver *drv = core->dev.driver;
332 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
342 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
344 drv->drv.name = drv->name;
345 drv->drv.bus = &bcma_bus_type;
346 drv->drv.owner = owner;
348 return driver_register(&drv->drv);
350 EXPORT_SYMBOL_GPL(__bcma_driver_register);
352 void bcma_driver_unregister(struct bcma_driver *drv)
354 driver_unregister(&drv->drv);
356 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
358 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
360 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
361 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
362 const struct bcma_device_id *cid = &core->id;
363 const struct bcma_device_id *did;
365 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
366 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
367 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
368 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
369 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
375 static int bcma_device_probe(struct device *dev)
377 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
378 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
383 err = adrv->probe(core);
388 static int bcma_device_remove(struct device *dev)
390 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
391 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
400 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
402 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
404 return add_uevent_var(env,
405 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
406 core->id.manuf, core->id.id,
407 core->id.rev, core->id.class);
410 static int __init bcma_modinit(void)
414 err = bus_register(&bcma_bus_type);
418 #ifdef CONFIG_BCMA_HOST_PCI
419 err = bcma_host_pci_init();
421 pr_err("PCI host initialization failed\n");
428 fs_initcall(bcma_modinit);
430 static void __exit bcma_modexit(void)
432 #ifdef CONFIG_BCMA_HOST_PCI
433 bcma_host_pci_exit();
435 bus_unregister(&bcma_bus_type);
437 module_exit(bcma_modexit)