Commit | Line | Data |
---|---|---|
8369ae33 RM |
1 | /* |
2 | * Broadcom specific AMBA | |
3 | * Bus subsystem | |
4 | * | |
5 | * Licensed under the GNU/GPL. See COPYING for details. | |
6 | */ | |
7 | ||
8 | #include "bcma_private.h" | |
200351c7 | 9 | #include <linux/module.h> |
8369ae33 | 10 | #include <linux/bcma/bcma.h> |
eef72699 | 11 | #include <linux/slab.h> |
8369ae33 RM |
12 | |
13 | MODULE_DESCRIPTION("Broadcom's specific AMBA driver"); | |
14 | MODULE_LICENSE("GPL"); | |
15 | ||
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); | |
886b66ef | 19 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env); |
8369ae33 RM |
20 | |
21 | static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf) | |
22 | { | |
23 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
24 | return sprintf(buf, "0x%03X\n", core->id.manuf); | |
25 | } | |
26 | static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf) | |
27 | { | |
28 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
29 | return sprintf(buf, "0x%03X\n", core->id.id); | |
30 | } | |
31 | static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf) | |
32 | { | |
33 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
34 | return sprintf(buf, "0x%02X\n", core->id.rev); | |
35 | } | |
36 | static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf) | |
37 | { | |
38 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
39 | return sprintf(buf, "0x%X\n", core->id.class); | |
40 | } | |
41 | static struct device_attribute bcma_device_attrs[] = { | |
42 | __ATTR_RO(manuf), | |
43 | __ATTR_RO(id), | |
44 | __ATTR_RO(rev), | |
45 | __ATTR_RO(class), | |
46 | __ATTR_NULL, | |
47 | }; | |
48 | ||
49 | static struct bus_type bcma_bus_type = { | |
50 | .name = "bcma", | |
51 | .match = bcma_bus_match, | |
52 | .probe = bcma_device_probe, | |
53 | .remove = bcma_device_remove, | |
886b66ef | 54 | .uevent = bcma_device_uevent, |
8369ae33 RM |
55 | .dev_attrs = bcma_device_attrs, |
56 | }; | |
57 | ||
58 | static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid) | |
59 | { | |
60 | struct bcma_device *core; | |
61 | ||
62 | list_for_each_entry(core, &bus->cores, list) { | |
63 | if (core->id.id == coreid) | |
64 | return core; | |
65 | } | |
66 | return NULL; | |
67 | } | |
68 | ||
69 | static void bcma_release_core_dev(struct device *dev) | |
70 | { | |
71 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
72 | if (core->io_addr) |
73 | iounmap(core->io_addr); | |
74 | if (core->io_wrap) | |
75 | iounmap(core->io_wrap); | |
8369ae33 RM |
76 | kfree(core); |
77 | } | |
78 | ||
79 | static int bcma_register_cores(struct bcma_bus *bus) | |
80 | { | |
81 | struct bcma_device *core; | |
82 | int err, dev_id = 0; | |
83 | ||
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: | |
88 | case BCMA_CORE_PCI: | |
89 | case BCMA_CORE_PCIE: | |
21e0534a | 90 | case BCMA_CORE_MIPS_74K: |
8369ae33 RM |
91 | continue; |
92 | } | |
93 | ||
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); | |
97 | ||
98 | switch (bus->hosttype) { | |
99 | case BCMA_HOSTTYPE_PCI: | |
100 | core->dev.parent = &bus->host_pci->dev; | |
1bdcd095 RM |
101 | core->dma_dev = &bus->host_pci->dev; |
102 | core->irq = bus->host_pci->irq; | |
8369ae33 | 103 | break; |
ecd177c2 HM |
104 | case BCMA_HOSTTYPE_SOC: |
105 | core->dev.dma_mask = &core->dev.coherent_dma_mask; | |
106 | core->dma_dev = &core->dev; | |
107 | break; | |
8369ae33 RM |
108 | case BCMA_HOSTTYPE_SDIO: |
109 | break; | |
110 | } | |
111 | ||
112 | err = device_register(&core->dev); | |
113 | if (err) { | |
114 | pr_err("Could not register dev for core 0x%03X\n", | |
115 | core->id.id); | |
116 | continue; | |
117 | } | |
118 | core->dev_registered = true; | |
119 | dev_id++; | |
120 | } | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
126 | { | |
127 | struct bcma_device *core; | |
128 | ||
129 | list_for_each_entry(core, &bus->cores, list) { | |
130 | if (core->dev_registered) | |
131 | device_unregister(&core->dev); | |
132 | } | |
133 | } | |
134 | ||
135 | int bcma_bus_register(struct bcma_bus *bus) | |
136 | { | |
137 | int err; | |
138 | struct bcma_device *core; | |
139 | ||
140 | /* Scan for devices (cores) */ | |
141 | err = bcma_bus_scan(bus); | |
142 | if (err) { | |
143 | pr_err("Failed to scan: %d\n", err); | |
144 | return -1; | |
145 | } | |
146 | ||
147 | /* Init CC core */ | |
148 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
149 | if (core) { | |
150 | bus->drv_cc.core = core; | |
151 | bcma_core_chipcommon_init(&bus->drv_cc); | |
152 | } | |
153 | ||
21e0534a HM |
154 | /* Init MIPS core */ |
155 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
156 | if (core) { | |
157 | bus->drv_mips.core = core; | |
158 | bcma_core_mips_init(&bus->drv_mips); | |
159 | } | |
160 | ||
8369ae33 RM |
161 | /* Init PCIE core */ |
162 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
163 | if (core) { | |
164 | bus->drv_pci.core = core; | |
165 | bcma_core_pci_init(&bus->drv_pci); | |
166 | } | |
167 | ||
27f18dc2 RM |
168 | /* Try to get SPROM */ |
169 | err = bcma_sprom_get(bus); | |
534e7a45 HM |
170 | if (err == -ENOENT) { |
171 | pr_err("No SPROM available\n"); | |
172 | } else if (err) { | |
27f18dc2 RM |
173 | pr_err("Failed to get SPROM: %d\n", err); |
174 | return -ENOENT; | |
175 | } | |
176 | ||
8369ae33 RM |
177 | /* Register found cores */ |
178 | bcma_register_cores(bus); | |
179 | ||
180 | pr_info("Bus registered\n"); | |
181 | ||
182 | return 0; | |
183 | } | |
8369ae33 RM |
184 | |
185 | void bcma_bus_unregister(struct bcma_bus *bus) | |
186 | { | |
187 | bcma_unregister_cores(bus); | |
188 | } | |
8369ae33 | 189 | |
517f43e5 HM |
190 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
191 | struct bcma_device *core_cc, | |
192 | struct bcma_device *core_mips) | |
193 | { | |
194 | int err; | |
195 | struct bcma_device *core; | |
196 | struct bcma_device_id match; | |
197 | ||
198 | bcma_init_bus(bus); | |
199 | ||
200 | match.manuf = BCMA_MANUF_BCM; | |
201 | match.id = BCMA_CORE_CHIPCOMMON; | |
202 | match.class = BCMA_CL_SIM; | |
203 | match.rev = BCMA_ANY_REV; | |
204 | ||
205 | /* Scan for chip common core */ | |
206 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
207 | if (err) { | |
208 | pr_err("Failed to scan for common core: %d\n", err); | |
209 | return -1; | |
210 | } | |
211 | ||
212 | match.manuf = BCMA_MANUF_MIPS; | |
213 | match.id = BCMA_CORE_MIPS_74K; | |
214 | match.class = BCMA_CL_SIM; | |
215 | match.rev = BCMA_ANY_REV; | |
216 | ||
217 | /* Scan for mips core */ | |
218 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
219 | if (err) { | |
220 | pr_err("Failed to scan for mips core: %d\n", err); | |
221 | return -1; | |
222 | } | |
223 | ||
224 | /* Init CC core */ | |
225 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
226 | if (core) { | |
227 | bus->drv_cc.core = core; | |
228 | bcma_core_chipcommon_init(&bus->drv_cc); | |
229 | } | |
230 | ||
21e0534a HM |
231 | /* Init MIPS core */ |
232 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
233 | if (core) { | |
234 | bus->drv_mips.core = core; | |
235 | bcma_core_mips_init(&bus->drv_mips); | |
236 | } | |
237 | ||
517f43e5 HM |
238 | pr_info("Early bus registered\n"); |
239 | ||
240 | return 0; | |
241 | } | |
242 | ||
775ab521 RM |
243 | #ifdef CONFIG_PM |
244 | int bcma_bus_resume(struct bcma_bus *bus) | |
245 | { | |
246 | struct bcma_device *core; | |
247 | ||
248 | /* Init CC core */ | |
249 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
250 | if (core) { | |
251 | bus->drv_cc.setup_done = false; | |
252 | bcma_core_chipcommon_init(&bus->drv_cc); | |
253 | } | |
254 | ||
255 | return 0; | |
256 | } | |
257 | #endif | |
258 | ||
8369ae33 RM |
259 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
260 | { | |
261 | drv->drv.name = drv->name; | |
262 | drv->drv.bus = &bcma_bus_type; | |
263 | drv->drv.owner = owner; | |
264 | ||
265 | return driver_register(&drv->drv); | |
266 | } | |
267 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
268 | ||
269 | void bcma_driver_unregister(struct bcma_driver *drv) | |
270 | { | |
271 | driver_unregister(&drv->drv); | |
272 | } | |
273 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
274 | ||
275 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
276 | { | |
277 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
278 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
279 | const struct bcma_device_id *cid = &core->id; | |
280 | const struct bcma_device_id *did; | |
281 | ||
282 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
283 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
284 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
285 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
286 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
287 | return 1; | |
288 | } | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int bcma_device_probe(struct device *dev) | |
293 | { | |
294 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
295 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
296 | drv); | |
297 | int err = 0; | |
298 | ||
299 | if (adrv->probe) | |
300 | err = adrv->probe(core); | |
301 | ||
302 | return err; | |
303 | } | |
304 | ||
305 | static int bcma_device_remove(struct device *dev) | |
306 | { | |
307 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
308 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
309 | drv); | |
310 | ||
311 | if (adrv->remove) | |
312 | adrv->remove(core); | |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
886b66ef DW |
317 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
318 | { | |
319 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
320 | ||
321 | return add_uevent_var(env, | |
322 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
323 | core->id.manuf, core->id.id, | |
324 | core->id.rev, core->id.class); | |
325 | } | |
326 | ||
8369ae33 RM |
327 | static int __init bcma_modinit(void) |
328 | { | |
329 | int err; | |
330 | ||
331 | err = bus_register(&bcma_bus_type); | |
332 | if (err) | |
333 | return err; | |
334 | ||
335 | #ifdef CONFIG_BCMA_HOST_PCI | |
336 | err = bcma_host_pci_init(); | |
337 | if (err) { | |
338 | pr_err("PCI host initialization failed\n"); | |
339 | err = 0; | |
340 | } | |
341 | #endif | |
342 | ||
343 | return err; | |
344 | } | |
345 | fs_initcall(bcma_modinit); | |
346 | ||
347 | static void __exit bcma_modexit(void) | |
348 | { | |
349 | #ifdef CONFIG_BCMA_HOST_PCI | |
350 | bcma_host_pci_exit(); | |
351 | #endif | |
352 | bus_unregister(&bcma_bus_type); | |
353 | } | |
354 | module_exit(bcma_modexit) |