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32#include <linux/device.h>
33#include <linux/module.h>
34#include "wusbhc.h"
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41
42static struct wusbhc *usbhc_dev_to_wusbhc(struct device *dev)
43{
44 struct usb_bus *usb_bus = dev_get_drvdata(dev);
45 struct usb_hcd *usb_hcd = bus_to_hcd(usb_bus);
46 return usb_hcd_to_wusbhc(usb_hcd);
47}
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56
57static ssize_t wusb_trust_timeout_show(struct device *dev,
58 struct device_attribute *attr, char *buf)
59{
60 struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
61
62 return scnprintf(buf, PAGE_SIZE, "%u\n", wusbhc->trust_timeout);
63}
64
65static ssize_t wusb_trust_timeout_store(struct device *dev,
66 struct device_attribute *attr,
67 const char *buf, size_t size)
68{
69 struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
70 ssize_t result = -ENOSYS;
71 unsigned trust_timeout;
72
73 result = sscanf(buf, "%u", &trust_timeout);
74 if (result != 1) {
75 result = -EINVAL;
76 goto out;
77 }
78
79 wusbhc->trust_timeout = trust_timeout;
80 cancel_delayed_work(&wusbhc->keep_alive_timer);
81 flush_workqueue(wusbd);
82 queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
83 (trust_timeout * CONFIG_HZ)/1000/2);
84out:
85 return result < 0 ? result : size;
86}
87static DEVICE_ATTR(wusb_trust_timeout, 0644, wusb_trust_timeout_show,
88 wusb_trust_timeout_store);
89
90
91
92
93static ssize_t wusb_chid_show(struct device *dev,
94 struct device_attribute *attr, char *buf)
95{
96 struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
97 const struct wusb_ckhdid *chid;
98 ssize_t result = 0;
99
100 if (wusbhc->wuie_host_info != NULL)
101 chid = &wusbhc->wuie_host_info->CHID;
102 else
103 chid = &wusb_ckhdid_zero;
104
105 result += ckhdid_printf(buf, PAGE_SIZE, chid);
106 result += sprintf(buf + result, "\n");
107
108 return result;
109}
110
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118
119static ssize_t wusb_chid_store(struct device *dev,
120 struct device_attribute *attr,
121 const char *buf, size_t size)
122{
123 struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
124 struct wusb_ckhdid chid;
125 ssize_t result;
126
127 result = sscanf(buf,
128 "%02hhx %02hhx %02hhx %02hhx "
129 "%02hhx %02hhx %02hhx %02hhx "
130 "%02hhx %02hhx %02hhx %02hhx "
131 "%02hhx %02hhx %02hhx %02hhx\n",
132 &chid.data[0] , &chid.data[1] ,
133 &chid.data[2] , &chid.data[3] ,
134 &chid.data[4] , &chid.data[5] ,
135 &chid.data[6] , &chid.data[7] ,
136 &chid.data[8] , &chid.data[9] ,
137 &chid.data[10], &chid.data[11],
138 &chid.data[12], &chid.data[13],
139 &chid.data[14], &chid.data[15]);
140 if (result != 16) {
141 dev_err(dev, "Unrecognized CHID (need 16 8-bit hex digits): "
142 "%d\n", (int)result);
143 return -EINVAL;
144 }
145 result = wusbhc_chid_set(wusbhc, &chid);
146 return result < 0 ? result : size;
147}
148static DEVICE_ATTR(wusb_chid, 0644, wusb_chid_show, wusb_chid_store);
149
150
151static struct attribute *wusbhc_attrs[] = {
152 &dev_attr_wusb_trust_timeout.attr,
153 &dev_attr_wusb_chid.attr,
154 NULL,
155};
156
157static struct attribute_group wusbhc_attr_group = {
158 .name = NULL,
159 .attrs = wusbhc_attrs,
160};
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174
175int wusbhc_create(struct wusbhc *wusbhc)
176{
177 int result = 0;
178
179 wusbhc->trust_timeout = WUSB_TRUST_TIMEOUT_MS;
180 mutex_init(&wusbhc->mutex);
181 result = wusbhc_mmcie_create(wusbhc);
182 if (result < 0)
183 goto error_mmcie_create;
184 result = wusbhc_devconnect_create(wusbhc);
185 if (result < 0)
186 goto error_devconnect_create;
187 result = wusbhc_rh_create(wusbhc);
188 if (result < 0)
189 goto error_rh_create;
190 result = wusbhc_sec_create(wusbhc);
191 if (result < 0)
192 goto error_sec_create;
193 return 0;
194
195error_sec_create:
196 wusbhc_rh_destroy(wusbhc);
197error_rh_create:
198 wusbhc_devconnect_destroy(wusbhc);
199error_devconnect_create:
200 wusbhc_mmcie_destroy(wusbhc);
201error_mmcie_create:
202 return result;
203}
204EXPORT_SYMBOL_GPL(wusbhc_create);
205
206static inline struct kobject *wusbhc_kobj(struct wusbhc *wusbhc)
207{
208 return &wusbhc->usb_hcd.self.controller->kobj;
209}
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220
221int wusbhc_b_create(struct wusbhc *wusbhc)
222{
223 int result = 0;
224 struct device *dev = wusbhc->usb_hcd.self.controller;
225
226 result = sysfs_create_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
227 if (result < 0) {
228 dev_err(dev, "Cannot register WUSBHC attributes: %d\n", result);
229 goto error_create_attr_group;
230 }
231
232 result = wusbhc_pal_register(wusbhc);
233 if (result < 0)
234 goto error_pal_register;
235 return 0;
236
237error_pal_register:
238 sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
239error_create_attr_group:
240 return result;
241}
242EXPORT_SYMBOL_GPL(wusbhc_b_create);
243
244void wusbhc_b_destroy(struct wusbhc *wusbhc)
245{
246 wusbhc_pal_unregister(wusbhc);
247 sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
248}
249EXPORT_SYMBOL_GPL(wusbhc_b_destroy);
250
251void wusbhc_destroy(struct wusbhc *wusbhc)
252{
253 wusbhc_sec_destroy(wusbhc);
254 wusbhc_rh_destroy(wusbhc);
255 wusbhc_devconnect_destroy(wusbhc);
256 wusbhc_mmcie_destroy(wusbhc);
257}
258EXPORT_SYMBOL_GPL(wusbhc_destroy);
259
260struct workqueue_struct *wusbd;
261EXPORT_SYMBOL_GPL(wusbd);
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273#define CLUSTER_IDS 32
274static DECLARE_BITMAP(wusb_cluster_id_table, CLUSTER_IDS);
275static DEFINE_SPINLOCK(wusb_cluster_ids_lock);
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285
286u8 wusb_cluster_id_get(void)
287{
288 u8 id;
289 spin_lock(&wusb_cluster_ids_lock);
290 id = find_first_zero_bit(wusb_cluster_id_table, CLUSTER_IDS);
291 if (id > CLUSTER_IDS) {
292 id = 0;
293 goto out;
294 }
295 set_bit(id, wusb_cluster_id_table);
296 id = (u8) 0xff - id;
297out:
298 spin_unlock(&wusb_cluster_ids_lock);
299 return id;
300
301}
302EXPORT_SYMBOL_GPL(wusb_cluster_id_get);
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308
309void wusb_cluster_id_put(u8 id)
310{
311 id = 0xff - id;
312 BUG_ON(id >= CLUSTER_IDS);
313 spin_lock(&wusb_cluster_ids_lock);
314 WARN_ON(!test_bit(id, wusb_cluster_id_table));
315 clear_bit(id, wusb_cluster_id_table);
316 spin_unlock(&wusb_cluster_ids_lock);
317}
318EXPORT_SYMBOL_GPL(wusb_cluster_id_put);
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336void wusbhc_giveback_urb(struct wusbhc *wusbhc, struct urb *urb, int status)
337{
338 struct wusb_dev *wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, urb->dev);
339
340 if (status == 0 && wusb_dev) {
341 wusb_dev->entry_ts = jiffies;
342
343
344
345 if (!list_empty(&wusb_dev->cack_node))
346 queue_work(wusbd, &wusb_dev->devconnect_acked_work);
347 else
348 wusb_dev_put(wusb_dev);
349 }
350
351 usb_hcd_giveback_urb(&wusbhc->usb_hcd, urb, status);
352}
353EXPORT_SYMBOL_GPL(wusbhc_giveback_urb);
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362void wusbhc_reset_all(struct wusbhc *wusbhc)
363{
364 uwb_rc_reset_all(wusbhc->uwb_rc);
365}
366EXPORT_SYMBOL_GPL(wusbhc_reset_all);
367
368static struct notifier_block wusb_usb_notifier = {
369 .notifier_call = wusb_usb_ncb,
370 .priority = INT_MAX
371};
372
373static int __init wusbcore_init(void)
374{
375 int result;
376 result = wusb_crypto_init();
377 if (result < 0)
378 goto error_crypto_init;
379
380 wusbd = create_singlethread_workqueue("wusbd");
381 if (wusbd == NULL) {
382 result = -ENOMEM;
383 printk(KERN_ERR "WUSB-core: Cannot create wusbd workqueue\n");
384 goto error_wusbd_create;
385 }
386 usb_register_notify(&wusb_usb_notifier);
387 bitmap_zero(wusb_cluster_id_table, CLUSTER_IDS);
388 set_bit(0, wusb_cluster_id_table);
389 return 0;
390
391error_wusbd_create:
392 wusb_crypto_exit();
393error_crypto_init:
394 return result;
395
396}
397module_init(wusbcore_init);
398
399static void __exit wusbcore_exit(void)
400{
401 clear_bit(0, wusb_cluster_id_table);
402 if (!bitmap_empty(wusb_cluster_id_table, CLUSTER_IDS)) {
403 char buf[256];
404 bitmap_scnprintf(buf, sizeof(buf), wusb_cluster_id_table,
405 CLUSTER_IDS);
406 printk(KERN_ERR "BUG: WUSB Cluster IDs not released "
407 "on exit: %s\n", buf);
408 WARN_ON(1);
409 }
410 usb_unregister_notify(&wusb_usb_notifier);
411 destroy_workqueue(wusbd);
412 wusb_crypto_exit();
413}
414module_exit(wusbcore_exit);
415
416MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
417MODULE_DESCRIPTION("Wireless USB core");
418MODULE_LICENSE("GPL");
419