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Rafał Miłecki8369ae32011-05-09 18:56:46 +02001/*
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>
Geert Uytterhoeveneef72692011-06-26 10:19:44 +020010#include <linux/slab.h>
Rafał Miłecki8369ae32011-05-09 18:56:46 +020011
12MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
13MODULE_LICENSE("GPL");
14
15static int bcma_bus_match(struct device *dev, struct device_driver *drv);
16static int bcma_device_probe(struct device *dev);
17static int bcma_device_remove(struct device *dev);
18
19static 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}
24static 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}
29static 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}
34static 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}
39static 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
47static 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
55static 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
66static 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
72static 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;
Rafał Miłecki1bdcd092011-05-18 11:40:22 +020093 core->dma_dev = &bus->host_pci->dev;
94 core->irq = bus->host_pci->irq;
Rafał Miłecki8369ae32011-05-09 18:56:46 +020095 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
114static 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
124int 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
Rafał Miłecki27f18dc2011-06-02 02:08:51 +0200150 /* Try to get SPROM */
151 err = bcma_sprom_get(bus);
Hauke Mehrtens534e7a42011-07-09 13:22:03 +0200152 if (err == -ENOENT) {
153 pr_err("No SPROM available\n");
154 } else if (err) {
Rafał Miłecki27f18dc2011-06-02 02:08:51 +0200155 pr_err("Failed to get SPROM: %d\n", err);
156 return -ENOENT;
157 }
158
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200159 /* Register found cores */
160 bcma_register_cores(bus);
161
162 pr_info("Bus registered\n");
163
164 return 0;
165}
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200166
167void bcma_bus_unregister(struct bcma_bus *bus)
168{
169 bcma_unregister_cores(bus);
170}
Rafał Miłecki8369ae32011-05-09 18:56:46 +0200171
172int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
173{
174 drv->drv.name = drv->name;
175 drv->drv.bus = &bcma_bus_type;
176 drv->drv.owner = owner;
177
178 return driver_register(&drv->drv);
179}
180EXPORT_SYMBOL_GPL(__bcma_driver_register);
181
182void bcma_driver_unregister(struct bcma_driver *drv)
183{
184 driver_unregister(&drv->drv);
185}
186EXPORT_SYMBOL_GPL(bcma_driver_unregister);
187
188static int bcma_bus_match(struct device *dev, struct device_driver *drv)
189{
190 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
191 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
192 const struct bcma_device_id *cid = &core->id;
193 const struct bcma_device_id *did;
194
195 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
196 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
197 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
198 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
199 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
200 return 1;
201 }
202 return 0;
203}
204
205static int bcma_device_probe(struct device *dev)
206{
207 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
208 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
209 drv);
210 int err = 0;
211
212 if (adrv->probe)
213 err = adrv->probe(core);
214
215 return err;
216}
217
218static int bcma_device_remove(struct device *dev)
219{
220 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
221 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
222 drv);
223
224 if (adrv->remove)
225 adrv->remove(core);
226
227 return 0;
228}
229
230static int __init bcma_modinit(void)
231{
232 int err;
233
234 err = bus_register(&bcma_bus_type);
235 if (err)
236 return err;
237
238#ifdef CONFIG_BCMA_HOST_PCI
239 err = bcma_host_pci_init();
240 if (err) {
241 pr_err("PCI host initialization failed\n");
242 err = 0;
243 }
244#endif
245
246 return err;
247}
248fs_initcall(bcma_modinit);
249
250static void __exit bcma_modexit(void)
251{
252#ifdef CONFIG_BCMA_HOST_PCI
253 bcma_host_pci_exit();
254#endif
255 bus_unregister(&bcma_bus_type);
256}
257module_exit(bcma_modexit)