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, *tmp;
163 list_for_each_entry_safe(core, tmp, &bus->cores, list) {
164 list_del(&core->list);
165 if (core->dev_registered)
166 device_unregister(&core->dev);
170 int __devinit bcma_bus_register(struct bcma_bus *bus)
173 struct bcma_device *core;
175 mutex_lock(&bcma_buses_mutex);
176 bus->num = bcma_bus_next_num++;
177 mutex_unlock(&bcma_buses_mutex);
179 /* Scan for devices (cores) */
180 err = bcma_bus_scan(bus);
182 bcma_err(bus, "Failed to scan: %d\n", err);
187 core = bcma_find_core(bus, bcma_cc_core_id(bus));
189 bus->drv_cc.core = core;
190 bcma_core_chipcommon_init(&bus->drv_cc);
194 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
196 bus->drv_mips.core = core;
197 bcma_core_mips_init(&bus->drv_mips);
201 core = bcma_find_core(bus, BCMA_CORE_PCIE);
203 bus->drv_pci.core = core;
204 bcma_core_pci_init(&bus->drv_pci);
207 /* Init GBIT MAC COMMON core */
208 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
210 bus->drv_gmac_cmn.core = core;
211 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
214 /* Try to get SPROM */
215 err = bcma_sprom_get(bus);
216 if (err == -ENOENT) {
217 bcma_err(bus, "No SPROM available\n");
219 bcma_err(bus, "Failed to get SPROM: %d\n", err);
221 /* Register found cores */
222 bcma_register_cores(bus);
224 bcma_info(bus, "Bus registered\n");
229 void bcma_bus_unregister(struct bcma_bus *bus)
231 struct bcma_device *cores[3];
233 cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
234 cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
235 cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
237 bcma_unregister_cores(bus);
244 int __init bcma_bus_early_register(struct bcma_bus *bus,
245 struct bcma_device *core_cc,
246 struct bcma_device *core_mips)
249 struct bcma_device *core;
250 struct bcma_device_id match;
254 match.manuf = BCMA_MANUF_BCM;
255 match.id = bcma_cc_core_id(bus);
256 match.class = BCMA_CL_SIM;
257 match.rev = BCMA_ANY_REV;
259 /* Scan for chip common core */
260 err = bcma_bus_scan_early(bus, &match, core_cc);
262 bcma_err(bus, "Failed to scan for common core: %d\n", err);
266 match.manuf = BCMA_MANUF_MIPS;
267 match.id = BCMA_CORE_MIPS_74K;
268 match.class = BCMA_CL_SIM;
269 match.rev = BCMA_ANY_REV;
271 /* Scan for mips core */
272 err = bcma_bus_scan_early(bus, &match, core_mips);
274 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
279 core = bcma_find_core(bus, bcma_cc_core_id(bus));
281 bus->drv_cc.core = core;
282 bcma_core_chipcommon_init(&bus->drv_cc);
286 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
288 bus->drv_mips.core = core;
289 bcma_core_mips_init(&bus->drv_mips);
292 bcma_info(bus, "Early bus registered\n");
298 int bcma_bus_suspend(struct bcma_bus *bus)
300 struct bcma_device *core;
302 list_for_each_entry(core, &bus->cores, list) {
303 struct device_driver *drv = core->dev.driver;
305 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
313 int bcma_bus_resume(struct bcma_bus *bus)
315 struct bcma_device *core;
318 if (bus->drv_cc.core) {
319 bus->drv_cc.setup_done = false;
320 bcma_core_chipcommon_init(&bus->drv_cc);
323 list_for_each_entry(core, &bus->cores, list) {
324 struct device_driver *drv = core->dev.driver;
326 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
336 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
338 drv->drv.name = drv->name;
339 drv->drv.bus = &bcma_bus_type;
340 drv->drv.owner = owner;
342 return driver_register(&drv->drv);
344 EXPORT_SYMBOL_GPL(__bcma_driver_register);
346 void bcma_driver_unregister(struct bcma_driver *drv)
348 driver_unregister(&drv->drv);
350 EXPORT_SYMBOL_GPL(bcma_driver_unregister);
352 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
354 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
355 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
356 const struct bcma_device_id *cid = &core->id;
357 const struct bcma_device_id *did;
359 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
360 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
361 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
362 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
363 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
369 static int bcma_device_probe(struct device *dev)
371 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
372 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
377 err = adrv->probe(core);
382 static int bcma_device_remove(struct device *dev)
384 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
385 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
394 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
396 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
398 return add_uevent_var(env,
399 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
400 core->id.manuf, core->id.id,
401 core->id.rev, core->id.class);
404 static int __init bcma_modinit(void)
408 err = bus_register(&bcma_bus_type);
412 #ifdef CONFIG_BCMA_HOST_PCI
413 err = bcma_host_pci_init();
415 pr_err("PCI host initialization failed\n");
422 fs_initcall(bcma_modinit);
424 static void __exit bcma_modexit(void)
426 #ifdef CONFIG_BCMA_HOST_PCI
427 bcma_host_pci_exit();
429 bus_unregister(&bcma_bus_type);
431 module_exit(bcma_modexit)