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Commit | Line | Data |
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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" | |
9 | #include <linux/bcma/bcma.h> | |
eef72699 | 10 | #include <linux/slab.h> |
8369ae33 RM |
11 | |
12 | MODULE_DESCRIPTION("Broadcom's specific AMBA driver"); | |
13 | MODULE_LICENSE("GPL"); | |
14 | ||
15 | static int bcma_bus_match(struct device *dev, struct device_driver *drv); | |
16 | static int bcma_device_probe(struct device *dev); | |
17 | static int bcma_device_remove(struct device *dev); | |
886b66ef | 18 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env); |
8369ae33 RM |
19 | |
20 | static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf) | |
21 | { | |
22 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
23 | return sprintf(buf, "0x%03X\n", core->id.manuf); | |
24 | } | |
25 | static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf) | |
26 | { | |
27 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
28 | return sprintf(buf, "0x%03X\n", core->id.id); | |
29 | } | |
30 | static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf) | |
31 | { | |
32 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
33 | return sprintf(buf, "0x%02X\n", core->id.rev); | |
34 | } | |
35 | static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf) | |
36 | { | |
37 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
38 | return sprintf(buf, "0x%X\n", core->id.class); | |
39 | } | |
40 | static struct device_attribute bcma_device_attrs[] = { | |
41 | __ATTR_RO(manuf), | |
42 | __ATTR_RO(id), | |
43 | __ATTR_RO(rev), | |
44 | __ATTR_RO(class), | |
45 | __ATTR_NULL, | |
46 | }; | |
47 | ||
48 | static struct bus_type bcma_bus_type = { | |
49 | .name = "bcma", | |
50 | .match = bcma_bus_match, | |
51 | .probe = bcma_device_probe, | |
52 | .remove = bcma_device_remove, | |
886b66ef | 53 | .uevent = bcma_device_uevent, |
8369ae33 RM |
54 | .dev_attrs = bcma_device_attrs, |
55 | }; | |
56 | ||
57 | static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid) | |
58 | { | |
59 | struct bcma_device *core; | |
60 | ||
61 | list_for_each_entry(core, &bus->cores, list) { | |
62 | if (core->id.id == coreid) | |
63 | return core; | |
64 | } | |
65 | return NULL; | |
66 | } | |
67 | ||
68 | static void bcma_release_core_dev(struct device *dev) | |
69 | { | |
70 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
71 | if (core->io_addr) |
72 | iounmap(core->io_addr); | |
73 | if (core->io_wrap) | |
74 | iounmap(core->io_wrap); | |
8369ae33 RM |
75 | kfree(core); |
76 | } | |
77 | ||
78 | static int bcma_register_cores(struct bcma_bus *bus) | |
79 | { | |
80 | struct bcma_device *core; | |
81 | int err, dev_id = 0; | |
82 | ||
83 | list_for_each_entry(core, &bus->cores, list) { | |
84 | /* We support that cores ourself */ | |
85 | switch (core->id.id) { | |
86 | case BCMA_CORE_CHIPCOMMON: | |
87 | case BCMA_CORE_PCI: | |
88 | case BCMA_CORE_PCIE: | |
21e0534a | 89 | case BCMA_CORE_MIPS_74K: |
8369ae33 RM |
90 | continue; |
91 | } | |
92 | ||
93 | core->dev.release = bcma_release_core_dev; | |
94 | core->dev.bus = &bcma_bus_type; | |
95 | dev_set_name(&core->dev, "bcma%d:%d", 0/*bus->num*/, dev_id); | |
96 | ||
97 | switch (bus->hosttype) { | |
98 | case BCMA_HOSTTYPE_PCI: | |
99 | core->dev.parent = &bus->host_pci->dev; | |
1bdcd095 RM |
100 | core->dma_dev = &bus->host_pci->dev; |
101 | core->irq = bus->host_pci->irq; | |
8369ae33 | 102 | break; |
ecd177c2 HM |
103 | case BCMA_HOSTTYPE_SOC: |
104 | core->dev.dma_mask = &core->dev.coherent_dma_mask; | |
105 | core->dma_dev = &core->dev; | |
106 | break; | |
8369ae33 RM |
107 | case BCMA_HOSTTYPE_SDIO: |
108 | break; | |
109 | } | |
110 | ||
111 | err = device_register(&core->dev); | |
112 | if (err) { | |
113 | pr_err("Could not register dev for core 0x%03X\n", | |
114 | core->id.id); | |
115 | continue; | |
116 | } | |
117 | core->dev_registered = true; | |
118 | dev_id++; | |
119 | } | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
124 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
125 | { | |
126 | struct bcma_device *core; | |
127 | ||
128 | list_for_each_entry(core, &bus->cores, list) { | |
129 | if (core->dev_registered) | |
130 | device_unregister(&core->dev); | |
131 | } | |
132 | } | |
133 | ||
134 | int bcma_bus_register(struct bcma_bus *bus) | |
135 | { | |
136 | int err; | |
137 | struct bcma_device *core; | |
138 | ||
139 | /* Scan for devices (cores) */ | |
140 | err = bcma_bus_scan(bus); | |
141 | if (err) { | |
142 | pr_err("Failed to scan: %d\n", err); | |
143 | return -1; | |
144 | } | |
145 | ||
146 | /* Init CC core */ | |
147 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
148 | if (core) { | |
149 | bus->drv_cc.core = core; | |
150 | bcma_core_chipcommon_init(&bus->drv_cc); | |
151 | } | |
152 | ||
21e0534a HM |
153 | /* Init MIPS core */ |
154 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
155 | if (core) { | |
156 | bus->drv_mips.core = core; | |
157 | bcma_core_mips_init(&bus->drv_mips); | |
158 | } | |
159 | ||
8369ae33 RM |
160 | /* Init PCIE core */ |
161 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
162 | if (core) { | |
163 | bus->drv_pci.core = core; | |
164 | bcma_core_pci_init(&bus->drv_pci); | |
165 | } | |
166 | ||
27f18dc2 RM |
167 | /* Try to get SPROM */ |
168 | err = bcma_sprom_get(bus); | |
534e7a45 HM |
169 | if (err == -ENOENT) { |
170 | pr_err("No SPROM available\n"); | |
171 | } else if (err) { | |
27f18dc2 RM |
172 | pr_err("Failed to get SPROM: %d\n", err); |
173 | return -ENOENT; | |
174 | } | |
175 | ||
8369ae33 RM |
176 | /* Register found cores */ |
177 | bcma_register_cores(bus); | |
178 | ||
179 | pr_info("Bus registered\n"); | |
180 | ||
181 | return 0; | |
182 | } | |
8369ae33 RM |
183 | |
184 | void bcma_bus_unregister(struct bcma_bus *bus) | |
185 | { | |
186 | bcma_unregister_cores(bus); | |
187 | } | |
8369ae33 | 188 | |
517f43e5 HM |
189 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
190 | struct bcma_device *core_cc, | |
191 | struct bcma_device *core_mips) | |
192 | { | |
193 | int err; | |
194 | struct bcma_device *core; | |
195 | struct bcma_device_id match; | |
196 | ||
197 | bcma_init_bus(bus); | |
198 | ||
199 | match.manuf = BCMA_MANUF_BCM; | |
200 | match.id = BCMA_CORE_CHIPCOMMON; | |
201 | match.class = BCMA_CL_SIM; | |
202 | match.rev = BCMA_ANY_REV; | |
203 | ||
204 | /* Scan for chip common core */ | |
205 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
206 | if (err) { | |
207 | pr_err("Failed to scan for common core: %d\n", err); | |
208 | return -1; | |
209 | } | |
210 | ||
211 | match.manuf = BCMA_MANUF_MIPS; | |
212 | match.id = BCMA_CORE_MIPS_74K; | |
213 | match.class = BCMA_CL_SIM; | |
214 | match.rev = BCMA_ANY_REV; | |
215 | ||
216 | /* Scan for mips core */ | |
217 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
218 | if (err) { | |
219 | pr_err("Failed to scan for mips core: %d\n", err); | |
220 | return -1; | |
221 | } | |
222 | ||
223 | /* Init CC core */ | |
224 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
225 | if (core) { | |
226 | bus->drv_cc.core = core; | |
227 | bcma_core_chipcommon_init(&bus->drv_cc); | |
228 | } | |
229 | ||
21e0534a HM |
230 | /* Init MIPS core */ |
231 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
232 | if (core) { | |
233 | bus->drv_mips.core = core; | |
234 | bcma_core_mips_init(&bus->drv_mips); | |
235 | } | |
236 | ||
517f43e5 HM |
237 | pr_info("Early bus registered\n"); |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
8369ae33 RM |
242 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
243 | { | |
244 | drv->drv.name = drv->name; | |
245 | drv->drv.bus = &bcma_bus_type; | |
246 | drv->drv.owner = owner; | |
247 | ||
248 | return driver_register(&drv->drv); | |
249 | } | |
250 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
251 | ||
252 | void bcma_driver_unregister(struct bcma_driver *drv) | |
253 | { | |
254 | driver_unregister(&drv->drv); | |
255 | } | |
256 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
257 | ||
258 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
259 | { | |
260 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
261 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
262 | const struct bcma_device_id *cid = &core->id; | |
263 | const struct bcma_device_id *did; | |
264 | ||
265 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
266 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
267 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
268 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
269 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
270 | return 1; | |
271 | } | |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int bcma_device_probe(struct device *dev) | |
276 | { | |
277 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
278 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
279 | drv); | |
280 | int err = 0; | |
281 | ||
282 | if (adrv->probe) | |
283 | err = adrv->probe(core); | |
284 | ||
285 | return err; | |
286 | } | |
287 | ||
288 | static int bcma_device_remove(struct device *dev) | |
289 | { | |
290 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
291 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
292 | drv); | |
293 | ||
294 | if (adrv->remove) | |
295 | adrv->remove(core); | |
296 | ||
297 | return 0; | |
298 | } | |
299 | ||
886b66ef DW |
300 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
301 | { | |
302 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
303 | ||
304 | return add_uevent_var(env, | |
305 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
306 | core->id.manuf, core->id.id, | |
307 | core->id.rev, core->id.class); | |
308 | } | |
309 | ||
8369ae33 RM |
310 | static int __init bcma_modinit(void) |
311 | { | |
312 | int err; | |
313 | ||
314 | err = bus_register(&bcma_bus_type); | |
315 | if (err) | |
316 | return err; | |
317 | ||
318 | #ifdef CONFIG_BCMA_HOST_PCI | |
319 | err = bcma_host_pci_init(); | |
320 | if (err) { | |
321 | pr_err("PCI host initialization failed\n"); | |
322 | err = 0; | |
323 | } | |
324 | #endif | |
325 | ||
326 | return err; | |
327 | } | |
328 | fs_initcall(bcma_modinit); | |
329 | ||
330 | static void __exit bcma_modexit(void) | |
331 | { | |
332 | #ifdef CONFIG_BCMA_HOST_PCI | |
333 | bcma_host_pci_exit(); | |
334 | #endif | |
335 | bus_unregister(&bcma_bus_type); | |
336 | } | |
337 | module_exit(bcma_modexit) |