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