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[pohmelfs.git] / drivers / usb / host / u132-hcd.c
blob16dd6a6abf007ced8c0be9204350a865318c50e8
1 /*
2 * Host Controller Driver for the Elan Digital Systems U132 adapter
3 *
4 * Copyright(C) 2006 Elan Digital Systems Limited
5 * http://www.elandigitalsystems.com
6 *
7 * Author and Maintainer - Tony Olech - Elan Digital Systems
8 * tony.olech@elandigitalsystems.com
9 *
10 * This program is free software;you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation, version 2.
13 *
14 *
15 * This driver was written by Tony Olech(tony.olech@elandigitalsystems.com)
16 * based on various USB host drivers in the 2.6.15 linux kernel
17 * with constant reference to the 3rd Edition of Linux Device Drivers
18 * published by O'Reilly
19 *
20 * The U132 adapter is a USB to CardBus adapter specifically designed
21 * for PC cards that contain an OHCI host controller. Typical PC cards
22 * are the Orange Mobile 3G Option GlobeTrotter Fusion card.
23 *
24 * The U132 adapter will *NOT *work with PC cards that do not contain
25 * an OHCI controller. A simple way to test whether a PC card has an
26 * OHCI controller as an interface is to insert the PC card directly
27 * into a laptop(or desktop) with a CardBus slot and if "lspci" shows
28 * a new USB controller and "lsusb -v" shows a new OHCI Host Controller
29 * then there is a good chance that the U132 adapter will support the
30 * PC card.(you also need the specific client driver for the PC card)
31 *
32 * Please inform the Author and Maintainer about any PC cards that
33 * contain OHCI Host Controller and work when directly connected to
34 * an embedded CardBus slot but do not work when they are connected
35 * via an ELAN U132 adapter.
36 *
37 */
38 #include <linux/kernel.h>
39 #include <linux/module.h>
40 #include <linux/moduleparam.h>
41 #include <linux/delay.h>
42 #include <linux/ioport.h>
43 #include <linux/pci_ids.h>
44 #include <linux/sched.h>
45 #include <linux/slab.h>
46 #include <linux/errno.h>
47 #include <linux/init.h>
48 #include <linux/timer.h>
49 #include <linux/list.h>
50 #include <linux/interrupt.h>
51 #include <linux/usb.h>
52 #include <linux/usb/hcd.h>
53 #include <linux/workqueue.h>
54 #include <linux/platform_device.h>
55 #include <linux/mutex.h>
56 #include <asm/io.h>
57 #include <asm/irq.h>
58 #include <asm/system.h>
59 #include <asm/byteorder.h>
60
61 /* FIXME ohci.h is ONLY for internal use by the OHCI driver.
62 * If you're going to try stuff like this, you need to split
63 * out shareable stuff (register declarations?) into its own
64 * file, maybe name <linux/usb/ohci.h>
65 */
66
67 #include "ohci.h"
68 #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
69 #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
70 OHCI_INTR_WDH)
71 MODULE_AUTHOR("Tony Olech - Elan Digital Systems Limited");
72 MODULE_DESCRIPTION("U132 USB Host Controller Driver");
73 MODULE_LICENSE("GPL");
74 #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
75 INT_MODULE_PARM(testing, 0);
76 /* Some boards misreport power switching/overcurrent*/
77 static bool distrust_firmware = 1;
78 module_param(distrust_firmware, bool, 0);
79 MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurren"
80 "t setup");
81 static DECLARE_WAIT_QUEUE_HEAD(u132_hcd_wait);
82 /*
83 * u132_module_lock exists to protect access to global variables
84 *
85 */
86 static struct mutex u132_module_lock;
87 static int u132_exiting;
88 static int u132_instances;
89 static struct list_head u132_static_list;
90 /*
91 * end of the global variables protected by u132_module_lock
92 */
93 static struct workqueue_struct *workqueue;
94 #define MAX_U132_PORTS 7
95 #define MAX_U132_ADDRS 128
96 #define MAX_U132_UDEVS 4
97 #define MAX_U132_ENDPS 100
98 #define MAX_U132_RINGS 4
99 static const char *cc_to_text[16] = {
100 "No Error ",
101 "CRC Error ",
102 "Bit Stuff ",
103 "Data Togg ",
104 "Stall ",
105 "DevNotResp ",
106 "PIDCheck ",
107 "UnExpPID ",
108 "DataOver ",
109 "DataUnder ",
110 "(for hw) ",
111 "(for hw) ",
112 "BufferOver ",
113 "BuffUnder ",
114 "(for HCD) ",
115 "(for HCD) "
116 };
117 struct u132_port {
118 struct u132 *u132;
119 int reset;
120 int enable;
121 int power;
122 int Status;
123 };
124 struct u132_addr {
125 u8 address;
126 };
127 struct u132_udev {
128 struct kref kref;
129 struct usb_device *usb_device;
130 u8 enumeration;
131 u8 udev_number;
132 u8 usb_addr;
133 u8 portnumber;
134 u8 endp_number_in[16];
135 u8 endp_number_out[16];
136 };
137 #define ENDP_QUEUE_SHIFT 3
138 #define ENDP_QUEUE_SIZE (1<<ENDP_QUEUE_SHIFT)
139 #define ENDP_QUEUE_MASK (ENDP_QUEUE_SIZE-1)
140 struct u132_urbq {
141 struct list_head urb_more;
142 struct urb *urb;
143 };
144 struct u132_spin {
145 spinlock_t slock;
146 };
147 struct u132_endp {
148 struct kref kref;
149 u8 udev_number;
150 u8 endp_number;
151 u8 usb_addr;
152 u8 usb_endp;
153 struct u132 *u132;
154 struct list_head endp_ring;
155 struct u132_ring *ring;
156 unsigned toggle_bits:2;
157 unsigned active:1;
158 unsigned delayed:1;
159 unsigned input:1;
160 unsigned output:1;
161 unsigned pipetype:2;
162 unsigned dequeueing:1;
163 unsigned edset_flush:1;
164 unsigned spare_bits:14;
165 unsigned long jiffies;
166 struct usb_host_endpoint *hep;
167 struct u132_spin queue_lock;
168 u16 queue_size;
169 u16 queue_last;
170 u16 queue_next;
171 struct urb *urb_list[ENDP_QUEUE_SIZE];
172 struct list_head urb_more;
173 struct delayed_work scheduler;
174 };
175 struct u132_ring {
176 unsigned in_use:1;
177 unsigned length:7;
178 u8 number;
179 struct u132 *u132;
180 struct u132_endp *curr_endp;
181 struct delayed_work scheduler;
182 };
183 struct u132 {
184 struct kref kref;
185 struct list_head u132_list;
186 struct mutex sw_lock;
187 struct mutex scheduler_lock;
188 struct u132_platform_data *board;
189 struct platform_device *platform_dev;
190 struct u132_ring ring[MAX_U132_RINGS];
191 int sequence_num;
192 int going;
193 int power;
194 int reset;
195 int num_ports;
196 u32 hc_control;
197 u32 hc_fminterval;
198 u32 hc_roothub_status;
199 u32 hc_roothub_a;
200 u32 hc_roothub_portstatus[MAX_ROOT_PORTS];
201 int flags;
202 unsigned long next_statechange;
203 struct delayed_work monitor;
204 int num_endpoints;
205 struct u132_addr addr[MAX_U132_ADDRS];
206 struct u132_udev udev[MAX_U132_UDEVS];
207 struct u132_port port[MAX_U132_PORTS];
208 struct u132_endp *endp[MAX_U132_ENDPS];
209 };
210
211 /*
212 * these cannot be inlines because we need the structure offset!!
213 * Does anyone have a better way?????
214 */
215 #define ftdi_read_pcimem(pdev, member, data) usb_ftdi_elan_read_pcimem(pdev, \
216 offsetof(struct ohci_regs, member), 0, data);
217 #define ftdi_write_pcimem(pdev, member, data) usb_ftdi_elan_write_pcimem(pdev, \
218 offsetof(struct ohci_regs, member), 0, data);
219 #define u132_read_pcimem(u132, member, data) \
220 usb_ftdi_elan_read_pcimem(u132->platform_dev, offsetof(struct \
221 ohci_regs, member), 0, data);
222 #define u132_write_pcimem(u132, member, data) \
223 usb_ftdi_elan_write_pcimem(u132->platform_dev, offsetof(struct \
224 ohci_regs, member), 0, data);
225 static inline struct u132 *udev_to_u132(struct u132_udev *udev)
226 {
227 u8 udev_number = udev->udev_number;
228 return container_of(udev, struct u132, udev[udev_number]);
229 }
230
231 static inline struct u132 *hcd_to_u132(struct usb_hcd *hcd)
232 {
233 return (struct u132 *)(hcd->hcd_priv);
234 }
235
236 static inline struct usb_hcd *u132_to_hcd(struct u132 *u132)
237 {
238 return container_of((void *)u132, struct usb_hcd, hcd_priv);
239 }
240
241 static inline void u132_disable(struct u132 *u132)
242 {
243 u132_to_hcd(u132)->state = HC_STATE_HALT;
244 }
245
246
247 #define kref_to_u132(d) container_of(d, struct u132, kref)
248 #define kref_to_u132_endp(d) container_of(d, struct u132_endp, kref)
249 #define kref_to_u132_udev(d) container_of(d, struct u132_udev, kref)
250 #include "../misc/usb_u132.h"
251 static const char hcd_name[] = "u132_hcd";
252 #define PORT_C_MASK ((USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE | \
253 USB_PORT_STAT_C_SUSPEND | USB_PORT_STAT_C_OVERCURRENT | \
254 USB_PORT_STAT_C_RESET) << 16)
255 static void u132_hcd_delete(struct kref *kref)
256 {
257 struct u132 *u132 = kref_to_u132(kref);
258 struct platform_device *pdev = u132->platform_dev;
259 struct usb_hcd *hcd = u132_to_hcd(u132);
260 u132->going += 1;
261 mutex_lock(&u132_module_lock);
262 list_del_init(&u132->u132_list);
263 u132_instances -= 1;
264 mutex_unlock(&u132_module_lock);
265 dev_warn(&u132->platform_dev->dev, "FREEING the hcd=%p and thus the u13"
266 "2=%p going=%d pdev=%p\n", hcd, u132, u132->going, pdev);
267 usb_put_hcd(hcd);
268 }
269
270 static inline void u132_u132_put_kref(struct u132 *u132)
271 {
272 kref_put(&u132->kref, u132_hcd_delete);
273 }
274
275 static inline void u132_u132_init_kref(struct u132 *u132)
276 {
277 kref_init(&u132->kref);
278 }
279
280 static void u132_udev_delete(struct kref *kref)
281 {
282 struct u132_udev *udev = kref_to_u132_udev(kref);
283 udev->udev_number = 0;
284 udev->usb_device = NULL;
285 udev->usb_addr = 0;
286 udev->enumeration = 0;
287 }
288
289 static inline void u132_udev_put_kref(struct u132 *u132, struct u132_udev *udev)
290 {
291 kref_put(&udev->kref, u132_udev_delete);
292 }
293
294 static inline void u132_udev_get_kref(struct u132 *u132, struct u132_udev *udev)
295 {
296 kref_get(&udev->kref);
297 }
298
299 static inline void u132_udev_init_kref(struct u132 *u132,
300 struct u132_udev *udev)
301 {
302 kref_init(&udev->kref);
303 }
304
305 static inline void u132_ring_put_kref(struct u132 *u132, struct u132_ring *ring)
306 {
307 kref_put(&u132->kref, u132_hcd_delete);
308 }
309
310 static void u132_ring_requeue_work(struct u132 *u132, struct u132_ring *ring,
311 unsigned int delta)
312 {
313 if (delta > 0) {
314 if (queue_delayed_work(workqueue, &ring->scheduler, delta))
315 return;
316 } else if (queue_delayed_work(workqueue, &ring->scheduler, 0))
317 return;
318 kref_put(&u132->kref, u132_hcd_delete);
319 }
320
321 static void u132_ring_queue_work(struct u132 *u132, struct u132_ring *ring,
322 unsigned int delta)
323 {
324 kref_get(&u132->kref);
325 u132_ring_requeue_work(u132, ring, delta);
326 }
327
328 static void u132_ring_cancel_work(struct u132 *u132, struct u132_ring *ring)
329 {
330 if (cancel_delayed_work(&ring->scheduler))
331 kref_put(&u132->kref, u132_hcd_delete);
332 }
333
334 static void u132_endp_delete(struct kref *kref)
335 {
336 struct u132_endp *endp = kref_to_u132_endp(kref);
337 struct u132 *u132 = endp->u132;
338 u8 usb_addr = endp->usb_addr;
339 u8 usb_endp = endp->usb_endp;
340 u8 address = u132->addr[usb_addr].address;
341 struct u132_udev *udev = &u132->udev[address];
342 u8 endp_number = endp->endp_number;
343 struct usb_host_endpoint *hep = endp->hep;
344 struct u132_ring *ring = endp->ring;
345 struct list_head *head = &endp->endp_ring;
346 ring->length -= 1;
347 if (endp == ring->curr_endp) {
348 if (list_empty(head)) {
349 ring->curr_endp = NULL;
350 list_del(head);
351 } else {
352 struct u132_endp *next_endp = list_entry(head->next,
353 struct u132_endp, endp_ring);
354 ring->curr_endp = next_endp;
355 list_del(head);
356 }
357 } else
358 list_del(head);
359 if (endp->input) {
360 udev->endp_number_in[usb_endp] = 0;
361 u132_udev_put_kref(u132, udev);
362 }
363 if (endp->output) {
364 udev->endp_number_out[usb_endp] = 0;
365 u132_udev_put_kref(u132, udev);
366 }
367 u132->endp[endp_number - 1] = NULL;
368 hep->hcpriv = NULL;
369 kfree(endp);
370 u132_u132_put_kref(u132);
371 }
372
373 static inline void u132_endp_put_kref(struct u132 *u132, struct u132_endp *endp)
374 {
375 kref_put(&endp->kref, u132_endp_delete);
376 }
377
378 static inline void u132_endp_get_kref(struct u132 *u132, struct u132_endp *endp)
379 {
380 kref_get(&endp->kref);
381 }
382
383 static inline void u132_endp_init_kref(struct u132 *u132,
384 struct u132_endp *endp)
385 {
386 kref_init(&endp->kref);
387 kref_get(&u132->kref);
388 }
389
390 static void u132_endp_queue_work(struct u132 *u132, struct u132_endp *endp,
391 unsigned int delta)
392 {
393 if (queue_delayed_work(workqueue, &endp->scheduler, delta))
394 kref_get(&endp->kref);
395 }
396
397 static void u132_endp_cancel_work(struct u132 *u132, struct u132_endp *endp)
398 {
399 if (cancel_delayed_work(&endp->scheduler))
400 kref_put(&endp->kref, u132_endp_delete);
401 }
402
403 static inline void u132_monitor_put_kref(struct u132 *u132)
404 {
405 kref_put(&u132->kref, u132_hcd_delete);
406 }
407
408 static void u132_monitor_queue_work(struct u132 *u132, unsigned int delta)
409 {
410 if (queue_delayed_work(workqueue, &u132->monitor, delta))
411 kref_get(&u132->kref);
412 }
413
414 static void u132_monitor_requeue_work(struct u132 *u132, unsigned int delta)
415 {
416 if (!queue_delayed_work(workqueue, &u132->monitor, delta))
417 kref_put(&u132->kref, u132_hcd_delete);
418 }
419
420 static void u132_monitor_cancel_work(struct u132 *u132)
421 {
422 if (cancel_delayed_work(&u132->monitor))
423 kref_put(&u132->kref, u132_hcd_delete);
424 }
425
426 static int read_roothub_info(struct u132 *u132)
427 {
428 u32 revision;
429 int retval;
430 retval = u132_read_pcimem(u132, revision, &revision);
431 if (retval) {
432 dev_err(&u132->platform_dev->dev, "error %d accessing device co"
433 "ntrol\n", retval);
434 return retval;
435 } else if ((revision & 0xFF) == 0x10) {
436 } else if ((revision & 0xFF) == 0x11) {
437 } else {
438 dev_err(&u132->platform_dev->dev, "device revision is not valid"
439 " %08X\n", revision);
440 return -ENODEV;
441 }
442 retval = u132_read_pcimem(u132, control, &u132->hc_control);
443 if (retval) {
444 dev_err(&u132->platform_dev->dev, "error %d accessing device co"
445 "ntrol\n", retval);
446 return retval;
447 }
448 retval = u132_read_pcimem(u132, roothub.status,
449 &u132->hc_roothub_status);
450 if (retval) {
451 dev_err(&u132->platform_dev->dev, "error %d accessing device re"
452 "g roothub.status\n", retval);
453 return retval;
454 }
455 retval = u132_read_pcimem(u132, roothub.a, &u132->hc_roothub_a);
456 if (retval) {
457 dev_err(&u132->platform_dev->dev, "error %d accessing device re"
458 "g roothub.a\n", retval);
459 return retval;
460 }
461 {
462 int I = u132->num_ports;
463 int i = 0;
464 while (I-- > 0) {
465 retval = u132_read_pcimem(u132, roothub.portstatus[i],
466 &u132->hc_roothub_portstatus[i]);
467 if (retval) {
468 dev_err(&u132->platform_dev->dev, "error %d acc"
469 "essing device roothub.portstatus[%d]\n"
470 , retval, i);
471 return retval;
472 } else
473 i += 1;
474 }
475 }
476 return 0;
477 }
478
479 static void u132_hcd_monitor_work(struct work_struct *work)
480 {
481 struct u132 *u132 = container_of(work, struct u132, monitor.work);
482 if (u132->going > 1) {
483 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
484 , u132->going);
485 u132_monitor_put_kref(u132);
486 return;
487 } else if (u132->going > 0) {
488 dev_err(&u132->platform_dev->dev, "device is being removed\n");
489 u132_monitor_put_kref(u132);
490 return;
491 } else {
492 int retval;
493 mutex_lock(&u132->sw_lock);
494 retval = read_roothub_info(u132);
495 if (retval) {
496 struct usb_hcd *hcd = u132_to_hcd(u132);
497 u132_disable(u132);
498 u132->going = 1;
499 mutex_unlock(&u132->sw_lock);
500 usb_hc_died(hcd);
501 ftdi_elan_gone_away(u132->platform_dev);
502 u132_monitor_put_kref(u132);
503 return;
504 } else {
505 u132_monitor_requeue_work(u132, 500);
506 mutex_unlock(&u132->sw_lock);
507 return;
508 }
509 }
510 }
511
512 static void u132_hcd_giveback_urb(struct u132 *u132, struct u132_endp *endp,
513 struct urb *urb, int status)
514 {
515 struct u132_ring *ring;
516 unsigned long irqs;
517 struct usb_hcd *hcd = u132_to_hcd(u132);
518 urb->error_count = 0;
519 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
520 usb_hcd_unlink_urb_from_ep(hcd, urb);
521 endp->queue_next += 1;
522 if (ENDP_QUEUE_SIZE > --endp->queue_size) {
523 endp->active = 0;
524 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
525 } else {
526 struct list_head *next = endp->urb_more.next;
527 struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
528 urb_more);
529 list_del(next);
530 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
531 urbq->urb;
532 endp->active = 0;
533 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
534 kfree(urbq);
535 }
536 mutex_lock(&u132->scheduler_lock);
537 ring = endp->ring;
538 ring->in_use = 0;
539 u132_ring_cancel_work(u132, ring);
540 u132_ring_queue_work(u132, ring, 0);
541 mutex_unlock(&u132->scheduler_lock);
542 u132_endp_put_kref(u132, endp);
543 usb_hcd_giveback_urb(hcd, urb, status);
544 }
545
546 static void u132_hcd_forget_urb(struct u132 *u132, struct u132_endp *endp,
547 struct urb *urb, int status)
548 {
549 u132_endp_put_kref(u132, endp);
550 }
551
552 static void u132_hcd_abandon_urb(struct u132 *u132, struct u132_endp *endp,
553 struct urb *urb, int status)
554 {
555 unsigned long irqs;
556 struct usb_hcd *hcd = u132_to_hcd(u132);
557 urb->error_count = 0;
558 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
559 usb_hcd_unlink_urb_from_ep(hcd, urb);
560 endp->queue_next += 1;
561 if (ENDP_QUEUE_SIZE > --endp->queue_size) {
562 endp->active = 0;
563 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
564 } else {
565 struct list_head *next = endp->urb_more.next;
566 struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
567 urb_more);
568 list_del(next);
569 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
570 urbq->urb;
571 endp->active = 0;
572 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
573 kfree(urbq);
574 }
575 usb_hcd_giveback_urb(hcd, urb, status);
576 }
577
578 static inline int edset_input(struct u132 *u132, struct u132_ring *ring,
579 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
580 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
581 int toggle_bits, int error_count, int condition_code, int repeat_number,
582 int halted, int skipped, int actual, int non_null))
583 {
584 return usb_ftdi_elan_edset_input(u132->platform_dev, ring->number, endp,
585 urb, address, endp->usb_endp, toggle_bits, callback);
586 }
587
588 static inline int edset_setup(struct u132 *u132, struct u132_ring *ring,
589 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
590 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
591 int toggle_bits, int error_count, int condition_code, int repeat_number,
592 int halted, int skipped, int actual, int non_null))
593 {
594 return usb_ftdi_elan_edset_setup(u132->platform_dev, ring->number, endp,
595 urb, address, endp->usb_endp, toggle_bits, callback);
596 }
597
598 static inline int edset_single(struct u132 *u132, struct u132_ring *ring,
599 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
600 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
601 int toggle_bits, int error_count, int condition_code, int repeat_number,
602 int halted, int skipped, int actual, int non_null))
603 {
604 return usb_ftdi_elan_edset_single(u132->platform_dev, ring->number,
605 endp, urb, address, endp->usb_endp, toggle_bits, callback);
606 }
607
608 static inline int edset_output(struct u132 *u132, struct u132_ring *ring,
609 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
610 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
611 int toggle_bits, int error_count, int condition_code, int repeat_number,
612 int halted, int skipped, int actual, int non_null))
613 {
614 return usb_ftdi_elan_edset_output(u132->platform_dev, ring->number,
615 endp, urb, address, endp->usb_endp, toggle_bits, callback);
616 }
617
618
619 /*
620 * must not LOCK sw_lock
621 *
622 */
623 static void u132_hcd_interrupt_recv(void *data, struct urb *urb, u8 *buf,
624 int len, int toggle_bits, int error_count, int condition_code,
625 int repeat_number, int halted, int skipped, int actual, int non_null)
626 {
627 struct u132_endp *endp = data;
628 struct u132 *u132 = endp->u132;
629 u8 address = u132->addr[endp->usb_addr].address;
630 struct u132_udev *udev = &u132->udev[address];
631 mutex_lock(&u132->scheduler_lock);
632 if (u132->going > 1) {
633 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
634 , u132->going);
635 mutex_unlock(&u132->scheduler_lock);
636 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
637 return;
638 } else if (endp->dequeueing) {
639 endp->dequeueing = 0;
640 mutex_unlock(&u132->scheduler_lock);
641 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
642 return;
643 } else if (u132->going > 0) {
644 dev_err(&u132->platform_dev->dev, "device is being removed "
645 "urb=%p\n", urb);
646 mutex_unlock(&u132->scheduler_lock);
647 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
648 return;
649 } else if (!urb->unlinked) {
650 struct u132_ring *ring = endp->ring;
651 u8 *u = urb->transfer_buffer + urb->actual_length;
652 u8 *b = buf;
653 int L = len;
654
655 while (L-- > 0)
656 *u++ = *b++;
657
658 urb->actual_length += len;
659 if ((condition_code == TD_CC_NOERROR) &&
660 (urb->transfer_buffer_length > urb->actual_length)) {
661 endp->toggle_bits = toggle_bits;
662 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
663 1 & toggle_bits);
664 if (urb->actual_length > 0) {
665 int retval;
666 mutex_unlock(&u132->scheduler_lock);
667 retval = edset_single(u132, ring, endp, urb,
668 address, endp->toggle_bits,
669 u132_hcd_interrupt_recv);
670 if (retval != 0)
671 u132_hcd_giveback_urb(u132, endp, urb,
672 retval);
673 } else {
674 ring->in_use = 0;
675 endp->active = 0;
676 endp->jiffies = jiffies +
677 msecs_to_jiffies(urb->interval);
678 u132_ring_cancel_work(u132, ring);
679 u132_ring_queue_work(u132, ring, 0);
680 mutex_unlock(&u132->scheduler_lock);
681 u132_endp_put_kref(u132, endp);
682 }
683 return;
684 } else if ((condition_code == TD_DATAUNDERRUN) &&
685 ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
686 endp->toggle_bits = toggle_bits;
687 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
688 1 & toggle_bits);
689 mutex_unlock(&u132->scheduler_lock);
690 u132_hcd_giveback_urb(u132, endp, urb, 0);
691 return;
692 } else {
693 if (condition_code == TD_CC_NOERROR) {
694 endp->toggle_bits = toggle_bits;
695 usb_settoggle(udev->usb_device, endp->usb_endp,
696 0, 1 & toggle_bits);
697 } else if (condition_code == TD_CC_STALL) {
698 endp->toggle_bits = 0x2;
699 usb_settoggle(udev->usb_device, endp->usb_endp,
700 0, 0);
701 } else {
702 endp->toggle_bits = 0x2;
703 usb_settoggle(udev->usb_device, endp->usb_endp,
704 0, 0);
705 dev_err(&u132->platform_dev->dev, "urb=%p givin"
706 "g back INTERRUPT %s\n", urb,
707 cc_to_text[condition_code]);
708 }
709 mutex_unlock(&u132->scheduler_lock);
710 u132_hcd_giveback_urb(u132, endp, urb,
711 cc_to_error[condition_code]);
712 return;
713 }
714 } else {
715 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
716 "unlinked=%d\n", urb, urb->unlinked);
717 mutex_unlock(&u132->scheduler_lock);
718 u132_hcd_giveback_urb(u132, endp, urb, 0);
719 return;
720 }
721 }
722
723 static void u132_hcd_bulk_output_sent(void *data, struct urb *urb, u8 *buf,
724 int len, int toggle_bits, int error_count, int condition_code,
725 int repeat_number, int halted, int skipped, int actual, int non_null)
726 {
727 struct u132_endp *endp = data;
728 struct u132 *u132 = endp->u132;
729 u8 address = u132->addr[endp->usb_addr].address;
730 mutex_lock(&u132->scheduler_lock);
731 if (u132->going > 1) {
732 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
733 , u132->going);
734 mutex_unlock(&u132->scheduler_lock);
735 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
736 return;
737 } else if (endp->dequeueing) {
738 endp->dequeueing = 0;
739 mutex_unlock(&u132->scheduler_lock);
740 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
741 return;
742 } else if (u132->going > 0) {
743 dev_err(&u132->platform_dev->dev, "device is being removed "
744 "urb=%p\n", urb);
745 mutex_unlock(&u132->scheduler_lock);
746 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
747 return;
748 } else if (!urb->unlinked) {
749 struct u132_ring *ring = endp->ring;
750 urb->actual_length += len;
751 endp->toggle_bits = toggle_bits;
752 if (urb->transfer_buffer_length > urb->actual_length) {
753 int retval;
754 mutex_unlock(&u132->scheduler_lock);
755 retval = edset_output(u132, ring, endp, urb, address,
756 endp->toggle_bits, u132_hcd_bulk_output_sent);
757 if (retval != 0)
758 u132_hcd_giveback_urb(u132, endp, urb, retval);
759 return;
760 } else {
761 mutex_unlock(&u132->scheduler_lock);
762 u132_hcd_giveback_urb(u132, endp, urb, 0);
763 return;
764 }
765 } else {
766 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
767 "unlinked=%d\n", urb, urb->unlinked);
768 mutex_unlock(&u132->scheduler_lock);
769 u132_hcd_giveback_urb(u132, endp, urb, 0);
770 return;
771 }
772 }
773
774 static void u132_hcd_bulk_input_recv(void *data, struct urb *urb, u8 *buf,
775 int len, int toggle_bits, int error_count, int condition_code,
776 int repeat_number, int halted, int skipped, int actual, int non_null)
777 {
778 struct u132_endp *endp = data;
779 struct u132 *u132 = endp->u132;
780 u8 address = u132->addr[endp->usb_addr].address;
781 struct u132_udev *udev = &u132->udev[address];
782 mutex_lock(&u132->scheduler_lock);
783 if (u132->going > 1) {
784 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
785 , u132->going);
786 mutex_unlock(&u132->scheduler_lock);
787 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
788 return;
789 } else if (endp->dequeueing) {
790 endp->dequeueing = 0;
791 mutex_unlock(&u132->scheduler_lock);
792 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
793 return;
794 } else if (u132->going > 0) {
795 dev_err(&u132->platform_dev->dev, "device is being removed "
796 "urb=%p\n", urb);
797 mutex_unlock(&u132->scheduler_lock);
798 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
799 return;
800 } else if (!urb->unlinked) {
801 struct u132_ring *ring = endp->ring;
802 u8 *u = urb->transfer_buffer + urb->actual_length;
803 u8 *b = buf;
804 int L = len;
805
806 while (L-- > 0)
807 *u++ = *b++;
808
809 urb->actual_length += len;
810 if ((condition_code == TD_CC_NOERROR) &&
811 (urb->transfer_buffer_length > urb->actual_length)) {
812 int retval;
813 endp->toggle_bits = toggle_bits;
814 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
815 1 & toggle_bits);
816 mutex_unlock(&u132->scheduler_lock);
817 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
818 ring->number, endp, urb, address,
819 endp->usb_endp, endp->toggle_bits,
820 u132_hcd_bulk_input_recv);
821 if (retval != 0)
822 u132_hcd_giveback_urb(u132, endp, urb, retval);
823 return;
824 } else if (condition_code == TD_CC_NOERROR) {
825 endp->toggle_bits = toggle_bits;
826 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
827 1 & toggle_bits);
828 mutex_unlock(&u132->scheduler_lock);
829 u132_hcd_giveback_urb(u132, endp, urb,
830 cc_to_error[condition_code]);
831 return;
832 } else if ((condition_code == TD_DATAUNDERRUN) &&
833 ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
834 endp->toggle_bits = toggle_bits;
835 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
836 1 & toggle_bits);
837 mutex_unlock(&u132->scheduler_lock);
838 u132_hcd_giveback_urb(u132, endp, urb, 0);
839 return;
840 } else if (condition_code == TD_DATAUNDERRUN) {
841 endp->toggle_bits = toggle_bits;
842 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
843 1 & toggle_bits);
844 dev_warn(&u132->platform_dev->dev, "urb=%p(SHORT NOT OK"
845 ") giving back BULK IN %s\n", urb,
846 cc_to_text[condition_code]);
847 mutex_unlock(&u132->scheduler_lock);
848 u132_hcd_giveback_urb(u132, endp, urb, 0);
849 return;
850 } else if (condition_code == TD_CC_STALL) {
851 endp->toggle_bits = 0x2;
852 usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
853 mutex_unlock(&u132->scheduler_lock);
854 u132_hcd_giveback_urb(u132, endp, urb,
855 cc_to_error[condition_code]);
856 return;
857 } else {
858 endp->toggle_bits = 0x2;
859 usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
860 dev_err(&u132->platform_dev->dev, "urb=%p giving back B"
861 "ULK IN code=%d %s\n", urb, condition_code,
862 cc_to_text[condition_code]);
863 mutex_unlock(&u132->scheduler_lock);
864 u132_hcd_giveback_urb(u132, endp, urb,
865 cc_to_error[condition_code]);
866 return;
867 }
868 } else {
869 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
870 "unlinked=%d\n", urb, urb->unlinked);
871 mutex_unlock(&u132->scheduler_lock);
872 u132_hcd_giveback_urb(u132, endp, urb, 0);
873 return;
874 }
875 }
876
877 static void u132_hcd_configure_empty_sent(void *data, struct urb *urb, u8 *buf,
878 int len, int toggle_bits, int error_count, int condition_code,
879 int repeat_number, int halted, int skipped, int actual, int non_null)
880 {
881 struct u132_endp *endp = data;
882 struct u132 *u132 = endp->u132;
883 mutex_lock(&u132->scheduler_lock);
884 if (u132->going > 1) {
885 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
886 , u132->going);
887 mutex_unlock(&u132->scheduler_lock);
888 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
889 return;
890 } else if (endp->dequeueing) {
891 endp->dequeueing = 0;
892 mutex_unlock(&u132->scheduler_lock);
893 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
894 return;
895 } else if (u132->going > 0) {
896 dev_err(&u132->platform_dev->dev, "device is being removed "
897 "urb=%p\n", urb);
898 mutex_unlock(&u132->scheduler_lock);
899 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
900 return;
901 } else if (!urb->unlinked) {
902 mutex_unlock(&u132->scheduler_lock);
903 u132_hcd_giveback_urb(u132, endp, urb, 0);
904 return;
905 } else {
906 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
907 "unlinked=%d\n", urb, urb->unlinked);
908 mutex_unlock(&u132->scheduler_lock);
909 u132_hcd_giveback_urb(u132, endp, urb, 0);
910 return;
911 }
912 }
913
914 static void u132_hcd_configure_input_recv(void *data, struct urb *urb, u8 *buf,
915 int len, int toggle_bits, int error_count, int condition_code,
916 int repeat_number, int halted, int skipped, int actual, int non_null)
917 {
918 struct u132_endp *endp = data;
919 struct u132 *u132 = endp->u132;
920 u8 address = u132->addr[endp->usb_addr].address;
921 mutex_lock(&u132->scheduler_lock);
922 if (u132->going > 1) {
923 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
924 , u132->going);
925 mutex_unlock(&u132->scheduler_lock);
926 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
927 return;
928 } else if (endp->dequeueing) {
929 endp->dequeueing = 0;
930 mutex_unlock(&u132->scheduler_lock);
931 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
932 return;
933 } else if (u132->going > 0) {
934 dev_err(&u132->platform_dev->dev, "device is being removed "
935 "urb=%p\n", urb);
936 mutex_unlock(&u132->scheduler_lock);
937 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
938 return;
939 } else if (!urb->unlinked) {
940 struct u132_ring *ring = endp->ring;
941 u8 *u = urb->transfer_buffer;
942 u8 *b = buf;
943 int L = len;
944
945 while (L-- > 0)
946 *u++ = *b++;
947
948 urb->actual_length = len;
949 if ((condition_code == TD_CC_NOERROR) || ((condition_code ==
950 TD_DATAUNDERRUN) && ((urb->transfer_flags &
951 URB_SHORT_NOT_OK) == 0))) {
952 int retval;
953 mutex_unlock(&u132->scheduler_lock);
954 retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
955 ring->number, endp, urb, address,
956 endp->usb_endp, 0x3,
957 u132_hcd_configure_empty_sent);
958 if (retval != 0)
959 u132_hcd_giveback_urb(u132, endp, urb, retval);
960 return;
961 } else if (condition_code == TD_CC_STALL) {
962 mutex_unlock(&u132->scheduler_lock);
963 dev_warn(&u132->platform_dev->dev, "giving back SETUP I"
964 "NPUT STALL urb %p\n", urb);
965 u132_hcd_giveback_urb(u132, endp, urb,
966 cc_to_error[condition_code]);
967 return;
968 } else {
969 mutex_unlock(&u132->scheduler_lock);
970 dev_err(&u132->platform_dev->dev, "giving back SETUP IN"
971 "PUT %s urb %p\n", cc_to_text[condition_code],
972 urb);
973 u132_hcd_giveback_urb(u132, endp, urb,
974 cc_to_error[condition_code]);
975 return;
976 }
977 } else {
978 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
979 "unlinked=%d\n", urb, urb->unlinked);
980 mutex_unlock(&u132->scheduler_lock);
981 u132_hcd_giveback_urb(u132, endp, urb, 0);
982 return;
983 }
984 }
985
986 static void u132_hcd_configure_empty_recv(void *data, struct urb *urb, u8 *buf,
987 int len, int toggle_bits, int error_count, int condition_code,
988 int repeat_number, int halted, int skipped, int actual, int non_null)
989 {
990 struct u132_endp *endp = data;
991 struct u132 *u132 = endp->u132;
992 mutex_lock(&u132->scheduler_lock);
993 if (u132->going > 1) {
994 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
995 , u132->going);
996 mutex_unlock(&u132->scheduler_lock);
997 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
998 return;
999 } else if (endp->dequeueing) {
1000 endp->dequeueing = 0;
1001 mutex_unlock(&u132->scheduler_lock);
1002 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1003 return;
1004 } else if (u132->going > 0) {
1005 dev_err(&u132->platform_dev->dev, "device is being removed "
1006 "urb=%p\n", urb);
1007 mutex_unlock(&u132->scheduler_lock);
1008 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1009 return;
1010 } else if (!urb->unlinked) {
1011 mutex_unlock(&u132->scheduler_lock);
1012 u132_hcd_giveback_urb(u132, endp, urb, 0);
1013 return;
1014 } else {
1015 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1016 "unlinked=%d\n", urb, urb->unlinked);
1017 mutex_unlock(&u132->scheduler_lock);
1018 u132_hcd_giveback_urb(u132, endp, urb, 0);
1019 return;
1020 }
1021 }
1022
1023 static void u132_hcd_configure_setup_sent(void *data, struct urb *urb, u8 *buf,
1024 int len, int toggle_bits, int error_count, int condition_code,
1025 int repeat_number, int halted, int skipped, int actual, int non_null)
1026 {
1027 struct u132_endp *endp = data;
1028 struct u132 *u132 = endp->u132;
1029 u8 address = u132->addr[endp->usb_addr].address;
1030 mutex_lock(&u132->scheduler_lock);
1031 if (u132->going > 1) {
1032 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1033 , u132->going);
1034 mutex_unlock(&u132->scheduler_lock);
1035 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1036 return;
1037 } else if (endp->dequeueing) {
1038 endp->dequeueing = 0;
1039 mutex_unlock(&u132->scheduler_lock);
1040 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1041 return;
1042 } else if (u132->going > 0) {
1043 dev_err(&u132->platform_dev->dev, "device is being removed "
1044 "urb=%p\n", urb);
1045 mutex_unlock(&u132->scheduler_lock);
1046 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1047 return;
1048 } else if (!urb->unlinked) {
1049 if (usb_pipein(urb->pipe)) {
1050 int retval;
1051 struct u132_ring *ring = endp->ring;
1052 mutex_unlock(&u132->scheduler_lock);
1053 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1054 ring->number, endp, urb, address,
1055 endp->usb_endp, 0,
1056 u132_hcd_configure_input_recv);
1057 if (retval != 0)
1058 u132_hcd_giveback_urb(u132, endp, urb, retval);
1059 return;
1060 } else {
1061 int retval;
1062 struct u132_ring *ring = endp->ring;
1063 mutex_unlock(&u132->scheduler_lock);
1064 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1065 ring->number, endp, urb, address,
1066 endp->usb_endp, 0,
1067 u132_hcd_configure_empty_recv);
1068 if (retval != 0)
1069 u132_hcd_giveback_urb(u132, endp, urb, retval);
1070 return;
1071 }
1072 } else {
1073 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1074 "unlinked=%d\n", urb, urb->unlinked);
1075 mutex_unlock(&u132->scheduler_lock);
1076 u132_hcd_giveback_urb(u132, endp, urb, 0);
1077 return;
1078 }
1079 }
1080
1081 static void u132_hcd_enumeration_empty_recv(void *data, struct urb *urb,
1082 u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
1083 int repeat_number, int halted, int skipped, int actual, int non_null)
1084 {
1085 struct u132_endp *endp = data;
1086 struct u132 *u132 = endp->u132;
1087 u8 address = u132->addr[endp->usb_addr].address;
1088 struct u132_udev *udev = &u132->udev[address];
1089 mutex_lock(&u132->scheduler_lock);
1090 if (u132->going > 1) {
1091 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1092 , u132->going);
1093 mutex_unlock(&u132->scheduler_lock);
1094 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1095 return;
1096 } else if (endp->dequeueing) {
1097 endp->dequeueing = 0;
1098 mutex_unlock(&u132->scheduler_lock);
1099 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1100 return;
1101 } else if (u132->going > 0) {
1102 dev_err(&u132->platform_dev->dev, "device is being removed "
1103 "urb=%p\n", urb);
1104 mutex_unlock(&u132->scheduler_lock);
1105 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1106 return;
1107 } else if (!urb->unlinked) {
1108 u132->addr[0].address = 0;
1109 endp->usb_addr = udev->usb_addr;
1110 mutex_unlock(&u132->scheduler_lock);
1111 u132_hcd_giveback_urb(u132, endp, urb, 0);
1112 return;
1113 } else {
1114 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1115 "unlinked=%d\n", urb, urb->unlinked);
1116 mutex_unlock(&u132->scheduler_lock);
1117 u132_hcd_giveback_urb(u132, endp, urb, 0);
1118 return;
1119 }
1120 }
1121
1122 static void u132_hcd_enumeration_address_sent(void *data, struct urb *urb,
1123 u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
1124 int repeat_number, int halted, int skipped, int actual, int non_null)
1125 {
1126 struct u132_endp *endp = data;
1127 struct u132 *u132 = endp->u132;
1128 mutex_lock(&u132->scheduler_lock);
1129 if (u132->going > 1) {
1130 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1131 , u132->going);
1132 mutex_unlock(&u132->scheduler_lock);
1133 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1134 return;
1135 } else if (endp->dequeueing) {
1136 endp->dequeueing = 0;
1137 mutex_unlock(&u132->scheduler_lock);
1138 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1139 return;
1140 } else if (u132->going > 0) {
1141 dev_err(&u132->platform_dev->dev, "device is being removed "
1142 "urb=%p\n", urb);
1143 mutex_unlock(&u132->scheduler_lock);
1144 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1145 return;
1146 } else if (!urb->unlinked) {
1147 int retval;
1148 struct u132_ring *ring = endp->ring;
1149 mutex_unlock(&u132->scheduler_lock);
1150 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1151 ring->number, endp, urb, 0, endp->usb_endp, 0,
1152 u132_hcd_enumeration_empty_recv);
1153 if (retval != 0)
1154 u132_hcd_giveback_urb(u132, endp, urb, retval);
1155 return;
1156 } else {
1157 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1158 "unlinked=%d\n", urb, urb->unlinked);
1159 mutex_unlock(&u132->scheduler_lock);
1160 u132_hcd_giveback_urb(u132, endp, urb, 0);
1161 return;
1162 }
1163 }
1164
1165 static void u132_hcd_initial_empty_sent(void *data, struct urb *urb, u8 *buf,
1166 int len, int toggle_bits, int error_count, int condition_code,
1167 int repeat_number, int halted, int skipped, int actual, int non_null)
1168 {
1169 struct u132_endp *endp = data;
1170 struct u132 *u132 = endp->u132;
1171 mutex_lock(&u132->scheduler_lock);
1172 if (u132->going > 1) {
1173 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1174 , u132->going);
1175 mutex_unlock(&u132->scheduler_lock);
1176 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1177 return;
1178 } else if (endp->dequeueing) {
1179 endp->dequeueing = 0;
1180 mutex_unlock(&u132->scheduler_lock);
1181 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1182 return;
1183 } else if (u132->going > 0) {
1184 dev_err(&u132->platform_dev->dev, "device is being removed "
1185 "urb=%p\n", urb);
1186 mutex_unlock(&u132->scheduler_lock);
1187 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1188 return;
1189 } else if (!urb->unlinked) {
1190 mutex_unlock(&u132->scheduler_lock);
1191 u132_hcd_giveback_urb(u132, endp, urb, 0);
1192 return;
1193 } else {
1194 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1195 "unlinked=%d\n", urb, urb->unlinked);
1196 mutex_unlock(&u132->scheduler_lock);
1197 u132_hcd_giveback_urb(u132, endp, urb, 0);
1198 return;
1199 }
1200 }
1201
1202 static void u132_hcd_initial_input_recv(void *data, struct urb *urb, u8 *buf,
1203 int len, int toggle_bits, int error_count, int condition_code,
1204 int repeat_number, int halted, int skipped, int actual, int non_null)
1205 {
1206 struct u132_endp *endp = data;
1207 struct u132 *u132 = endp->u132;
1208 u8 address = u132->addr[endp->usb_addr].address;
1209 mutex_lock(&u132->scheduler_lock);
1210 if (u132->going > 1) {
1211 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1212 , u132->going);
1213 mutex_unlock(&u132->scheduler_lock);
1214 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1215 return;
1216 } else if (endp->dequeueing) {
1217 endp->dequeueing = 0;
1218 mutex_unlock(&u132->scheduler_lock);
1219 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1220 return;
1221 } else if (u132->going > 0) {
1222 dev_err(&u132->platform_dev->dev, "device is being removed "
1223 "urb=%p\n", urb);
1224 mutex_unlock(&u132->scheduler_lock);
1225 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1226 return;
1227 } else if (!urb->unlinked) {
1228 int retval;
1229 struct u132_ring *ring = endp->ring;
1230 u8 *u = urb->transfer_buffer;
1231 u8 *b = buf;
1232 int L = len;
1233
1234 while (L-- > 0)
1235 *u++ = *b++;
1236
1237 urb->actual_length = len;
1238 mutex_unlock(&u132->scheduler_lock);
1239 retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
1240 ring->number, endp, urb, address, endp->usb_endp, 0x3,
1241 u132_hcd_initial_empty_sent);
1242 if (retval != 0)
1243 u132_hcd_giveback_urb(u132, endp, urb, retval);
1244 return;
1245 } else {
1246 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1247 "unlinked=%d\n", urb, urb->unlinked);
1248 mutex_unlock(&u132->scheduler_lock);
1249 u132_hcd_giveback_urb(u132, endp, urb, 0);
1250 return;
1251 }
1252 }
1253
1254 static void u132_hcd_initial_setup_sent(void *data, struct urb *urb, u8 *buf,
1255 int len, int toggle_bits, int error_count, int condition_code,
1256 int repeat_number, int halted, int skipped, int actual, int non_null)
1257 {
1258 struct u132_endp *endp = data;
1259 struct u132 *u132 = endp->u132;
1260 u8 address = u132->addr[endp->usb_addr].address;
1261 mutex_lock(&u132->scheduler_lock);
1262 if (u132->going > 1) {
1263 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1264 , u132->going);
1265 mutex_unlock(&u132->scheduler_lock);
1266 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1267 return;
1268 } else if (endp->dequeueing) {
1269 endp->dequeueing = 0;
1270 mutex_unlock(&u132->scheduler_lock);
1271 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1272 return;
1273 } else if (u132->going > 0) {
1274 dev_err(&u132->platform_dev->dev, "device is being removed "
1275 "urb=%p\n", urb);
1276 mutex_unlock(&u132->scheduler_lock);
1277 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1278 return;
1279 } else if (!urb->unlinked) {
1280 int retval;
1281 struct u132_ring *ring = endp->ring;
1282 mutex_unlock(&u132->scheduler_lock);
1283 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1284 ring->number, endp, urb, address, endp->usb_endp, 0,
1285 u132_hcd_initial_input_recv);
1286 if (retval != 0)
1287 u132_hcd_giveback_urb(u132, endp, urb, retval);
1288 return;
1289 } else {
1290 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1291 "unlinked=%d\n", urb, urb->unlinked);
1292 mutex_unlock(&u132->scheduler_lock);
1293 u132_hcd_giveback_urb(u132, endp, urb, 0);
1294 return;
1295 }
1296 }
1297
1298 /*
1299 * this work function is only executed from the work queue
1300 *
1301 */
1302 static void u132_hcd_ring_work_scheduler(struct work_struct *work)
1303 {
1304 struct u132_ring *ring =
1305 container_of(work, struct u132_ring, scheduler.work);
1306 struct u132 *u132 = ring->u132;
1307 mutex_lock(&u132->scheduler_lock);
1308 if (ring->in_use) {
1309 mutex_unlock(&u132->scheduler_lock);
1310 u132_ring_put_kref(u132, ring);
1311 return;
1312 } else if (ring->curr_endp) {
1313 struct u132_endp *last_endp = ring->curr_endp;
1314 struct list_head *scan;
1315 struct list_head *head = &last_endp->endp_ring;
1316 unsigned long wakeup = 0;
1317 list_for_each(scan, head) {
1318 struct u132_endp *endp = list_entry(scan,
1319 struct u132_endp, endp_ring);
1320 if (endp->queue_next == endp->queue_last) {
1321 } else if ((endp->delayed == 0)
1322 || time_after_eq(jiffies, endp->jiffies)) {
1323 ring->curr_endp = endp;
1324 u132_endp_cancel_work(u132, last_endp);
1325 u132_endp_queue_work(u132, last_endp, 0);
1326 mutex_unlock(&u132->scheduler_lock);
1327 u132_ring_put_kref(u132, ring);
1328 return;
1329 } else {
1330 unsigned long delta = endp->jiffies - jiffies;
1331 if (delta > wakeup)
1332 wakeup = delta;
1333 }
1334 }
1335 if (last_endp->queue_next == last_endp->queue_last) {
1336 } else if ((last_endp->delayed == 0) || time_after_eq(jiffies,
1337 last_endp->jiffies)) {
1338 u132_endp_cancel_work(u132, last_endp);
1339 u132_endp_queue_work(u132, last_endp, 0);
1340 mutex_unlock(&u132->scheduler_lock);
1341 u132_ring_put_kref(u132, ring);
1342 return;
1343 } else {
1344 unsigned long delta = last_endp->jiffies - jiffies;
1345 if (delta > wakeup)
1346 wakeup = delta;
1347 }
1348 if (wakeup > 0) {
1349 u132_ring_requeue_work(u132, ring, wakeup);
1350 mutex_unlock(&u132->scheduler_lock);
1351 return;
1352 } else {
1353 mutex_unlock(&u132->scheduler_lock);
1354 u132_ring_put_kref(u132, ring);
1355 return;
1356 }
1357 } else {
1358 mutex_unlock(&u132->scheduler_lock);
1359 u132_ring_put_kref(u132, ring);
1360 return;
1361 }
1362 }
1363
1364 static void u132_hcd_endp_work_scheduler(struct work_struct *work)
1365 {
1366 struct u132_ring *ring;
1367 struct u132_endp *endp =
1368 container_of(work, struct u132_endp, scheduler.work);
1369 struct u132 *u132 = endp->u132;
1370 mutex_lock(&u132->scheduler_lock);
1371 ring = endp->ring;
1372 if (endp->edset_flush) {
1373 endp->edset_flush = 0;
1374 if (endp->dequeueing)
1375 usb_ftdi_elan_edset_flush(u132->platform_dev,
1376 ring->number, endp);
1377 mutex_unlock(&u132->scheduler_lock);
1378 u132_endp_put_kref(u132, endp);
1379 return;
1380 } else if (endp->active) {
1381 mutex_unlock(&u132->scheduler_lock);
1382 u132_endp_put_kref(u132, endp);
1383 return;
1384 } else if (ring->in_use) {
1385 mutex_unlock(&u132->scheduler_lock);
1386 u132_endp_put_kref(u132, endp);
1387 return;
1388 } else if (endp->queue_next == endp->queue_last) {
1389 mutex_unlock(&u132->scheduler_lock);
1390 u132_endp_put_kref(u132, endp);
1391 return;
1392 } else if (endp->pipetype == PIPE_INTERRUPT) {
1393 u8 address = u132->addr[endp->usb_addr].address;
1394 if (ring->in_use) {
1395 mutex_unlock(&u132->scheduler_lock);
1396 u132_endp_put_kref(u132, endp);
1397 return;
1398 } else {
1399 int retval;
1400 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1401 endp->queue_next];
1402 endp->active = 1;
1403 ring->curr_endp = endp;
1404 ring->in_use = 1;
1405 mutex_unlock(&u132->scheduler_lock);
1406 retval = edset_single(u132, ring, endp, urb, address,
1407 endp->toggle_bits, u132_hcd_interrupt_recv);
1408 if (retval != 0)
1409 u132_hcd_giveback_urb(u132, endp, urb, retval);
1410 return;
1411 }
1412 } else if (endp->pipetype == PIPE_CONTROL) {
1413 u8 address = u132->addr[endp->usb_addr].address;
1414 if (ring->in_use) {
1415 mutex_unlock(&u132->scheduler_lock);
1416 u132_endp_put_kref(u132, endp);
1417 return;
1418 } else if (address == 0) {
1419 int retval;
1420 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1421 endp->queue_next];
1422 endp->active = 1;
1423 ring->curr_endp = endp;
1424 ring->in_use = 1;
1425 mutex_unlock(&u132->scheduler_lock);
1426 retval = edset_setup(u132, ring, endp, urb, address,
1427 0x2, u132_hcd_initial_setup_sent);
1428 if (retval != 0)
1429 u132_hcd_giveback_urb(u132, endp, urb, retval);
1430 return;
1431 } else if (endp->usb_addr == 0) {
1432 int retval;
1433 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1434 endp->queue_next];
1435 endp->active = 1;
1436 ring->curr_endp = endp;
1437 ring->in_use = 1;
1438 mutex_unlock(&u132->scheduler_lock);
1439 retval = edset_setup(u132, ring, endp, urb, 0, 0x2,
1440 u132_hcd_enumeration_address_sent);
1441 if (retval != 0)
1442 u132_hcd_giveback_urb(u132, endp, urb, retval);
1443 return;
1444 } else {
1445 int retval;
1446 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1447 endp->queue_next];
1448 address = u132->addr[endp->usb_addr].address;
1449 endp->active = 1;
1450 ring->curr_endp = endp;
1451 ring->in_use = 1;
1452 mutex_unlock(&u132->scheduler_lock);
1453 retval = edset_setup(u132, ring, endp, urb, address,
1454 0x2, u132_hcd_configure_setup_sent);
1455 if (retval != 0)
1456 u132_hcd_giveback_urb(u132, endp, urb, retval);
1457 return;
1458 }
1459 } else {
1460 if (endp->input) {
1461 u8 address = u132->addr[endp->usb_addr].address;
1462 if (ring->in_use) {
1463 mutex_unlock(&u132->scheduler_lock);
1464 u132_endp_put_kref(u132, endp);
1465 return;
1466 } else {
1467 int retval;
1468 struct urb *urb = endp->urb_list[
1469 ENDP_QUEUE_MASK & endp->queue_next];
1470 endp->active = 1;
1471 ring->curr_endp = endp;
1472 ring->in_use = 1;
1473 mutex_unlock(&u132->scheduler_lock);
1474 retval = edset_input(u132, ring, endp, urb,
1475 address, endp->toggle_bits,
1476 u132_hcd_bulk_input_recv);
1477 if (retval == 0) {
1478 } else
1479 u132_hcd_giveback_urb(u132, endp, urb,
1480 retval);
1481 return;
1482 }
1483 } else { /* output pipe */
1484 u8 address = u132->addr[endp->usb_addr].address;
1485 if (ring->in_use) {
1486 mutex_unlock(&u132->scheduler_lock);
1487 u132_endp_put_kref(u132, endp);
1488 return;
1489 } else {
1490 int retval;
1491 struct urb *urb = endp->urb_list[
1492 ENDP_QUEUE_MASK & endp->queue_next];
1493 endp->active = 1;
1494 ring->curr_endp = endp;
1495 ring->in_use = 1;
1496 mutex_unlock(&u132->scheduler_lock);
1497 retval = edset_output(u132, ring, endp, urb,
1498 address, endp->toggle_bits,
1499 u132_hcd_bulk_output_sent);
1500 if (retval == 0) {
1501 } else
1502 u132_hcd_giveback_urb(u132, endp, urb,
1503 retval);
1504 return;
1505 }
1506 }
1507 }
1508 }
1509 #ifdef CONFIG_PM
1510
1511 static void port_power(struct u132 *u132, int pn, int is_on)
1512 {
1513 u132->port[pn].power = is_on;
1514 }
1515
1516 #endif
1517
1518 static void u132_power(struct u132 *u132, int is_on)
1519 {
1520 struct usb_hcd *hcd = u132_to_hcd(u132)
1521 ; /* hub is inactive unless the port is powered */
1522 if (is_on) {
1523 if (u132->power)
1524 return;
1525 u132->power = 1;
1526 } else {
1527 u132->power = 0;
1528 hcd->state = HC_STATE_HALT;
1529 }
1530 }
1531
1532 static int u132_periodic_reinit(struct u132 *u132)
1533 {
1534 int retval;
1535 u32 fi = u132->hc_fminterval & 0x03fff;
1536 u32 fit;
1537 u32 fminterval;
1538 retval = u132_read_pcimem(u132, fminterval, &fminterval);
1539 if (retval)
1540 return retval;
1541 fit = fminterval & FIT;
1542 retval = u132_write_pcimem(u132, fminterval,
1543 (fit ^ FIT) | u132->hc_fminterval);
1544 if (retval)
1545 return retval;
1546 retval = u132_write_pcimem(u132, periodicstart,
1547 ((9 * fi) / 10) & 0x3fff);
1548 if (retval)
1549 return retval;
1550 return 0;
1551 }
1552
1553 static char *hcfs2string(int state)
1554 {
1555 switch (state) {
1556 case OHCI_USB_RESET:
1557 return "reset";
1558 case OHCI_USB_RESUME:
1559 return "resume";
1560 case OHCI_USB_OPER:
1561 return "operational";
1562 case OHCI_USB_SUSPEND:
1563 return "suspend";
1564 }
1565 return "?";
1566 }
1567
1568 static int u132_init(struct u132 *u132)
1569 {
1570 int retval;
1571 u32 control;
1572 u132_disable(u132);
1573 u132->next_statechange = jiffies;
1574 retval = u132_write_pcimem(u132, intrdisable, OHCI_INTR_MIE);
1575 if (retval)
1576 return retval;
1577 retval = u132_read_pcimem(u132, control, &control);
1578 if (retval)
1579 return retval;
1580 if (u132->num_ports == 0) {
1581 u32 rh_a = -1;
1582 retval = u132_read_pcimem(u132, roothub.a, &rh_a);
1583 if (retval)
1584 return retval;
1585 u132->num_ports = rh_a & RH_A_NDP;
1586 retval = read_roothub_info(u132);
1587 if (retval)
1588 return retval;
1589 }
1590 if (u132->num_ports > MAX_U132_PORTS)
1591 return -EINVAL;
1592
1593 return 0;
1594 }
1595
1596
1597 /* Start an OHCI controller, set the BUS operational
1598 * resets USB and controller
1599 * enable interrupts
1600 */
1601 static int u132_run(struct u132 *u132)
1602 {
1603 int retval;
1604 u32 control;
1605 u32 status;
1606 u32 fminterval;
1607 u32 periodicstart;
1608 u32 cmdstatus;
1609 u32 roothub_a;
1610 int mask = OHCI_INTR_INIT;
1611 int first = u132->hc_fminterval == 0;
1612 int sleep_time = 0;
1613 int reset_timeout = 30; /* ... allow extra time */
1614 u132_disable(u132);
1615 if (first) {
1616 u32 temp;
1617 retval = u132_read_pcimem(u132, fminterval, &temp);
1618 if (retval)
1619 return retval;
1620 u132->hc_fminterval = temp & 0x3fff;
1621 u132->hc_fminterval |= FSMP(u132->hc_fminterval) << 16;
1622 }
1623 retval = u132_read_pcimem(u132, control, &u132->hc_control);
1624 if (retval)
1625 return retval;
1626 dev_info(&u132->platform_dev->dev, "resetting from state '%s', control "
1627 "= %08X\n", hcfs2string(u132->hc_control & OHCI_CTRL_HCFS),
1628 u132->hc_control);
1629 switch (u132->hc_control & OHCI_CTRL_HCFS) {
1630 case OHCI_USB_OPER:
1631 sleep_time = 0;
1632 break;
1633 case OHCI_USB_SUSPEND:
1634 case OHCI_USB_RESUME:
1635 u132->hc_control &= OHCI_CTRL_RWC;
1636 u132->hc_control |= OHCI_USB_RESUME;
1637 sleep_time = 10;
1638 break;
1639 default:
1640 u132->hc_control &= OHCI_CTRL_RWC;
1641 u132->hc_control |= OHCI_USB_RESET;
1642 sleep_time = 50;
1643 break;
1644 }
1645 retval = u132_write_pcimem(u132, control, u132->hc_control);
1646 if (retval)
1647 return retval;
1648 retval = u132_read_pcimem(u132, control, &control);
1649 if (retval)
1650 return retval;
1651 msleep(sleep_time);
1652 retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
1653 if (retval)
1654 return retval;
1655 if (!(roothub_a & RH_A_NPS)) {
1656 int temp; /* power down each port */
1657 for (temp = 0; temp < u132->num_ports; temp++) {
1658 retval = u132_write_pcimem(u132,
1659 roothub.portstatus[temp], RH_PS_LSDA);
1660 if (retval)
1661 return retval;
1662 }
1663 }
1664 retval = u132_read_pcimem(u132, control, &control);
1665 if (retval)
1666 return retval;
1667 retry:
1668 retval = u132_read_pcimem(u132, cmdstatus, &status);
1669 if (retval)
1670 return retval;
1671 retval = u132_write_pcimem(u132, cmdstatus, OHCI_HCR);
1672 if (retval)
1673 return retval;
1674 extra: {
1675 retval = u132_read_pcimem(u132, cmdstatus, &status);
1676 if (retval)
1677 return retval;
1678 if (0 != (status & OHCI_HCR)) {
1679 if (--reset_timeout == 0) {
1680 dev_err(&u132->platform_dev->dev, "USB HC reset"
1681 " timed out!\n");
1682 return -ENODEV;
1683 } else {
1684 msleep(5);
1685 goto extra;
1686 }
1687 }
1688 }
1689 if (u132->flags & OHCI_QUIRK_INITRESET) {
1690 retval = u132_write_pcimem(u132, control, u132->hc_control);
1691 if (retval)
1692 return retval;
1693 retval = u132_read_pcimem(u132, control, &control);
1694 if (retval)
1695 return retval;
1696 }
1697 retval = u132_write_pcimem(u132, ed_controlhead, 0x00000000);
1698 if (retval)
1699 return retval;
1700 retval = u132_write_pcimem(u132, ed_bulkhead, 0x11000000);
1701 if (retval)
1702 return retval;
1703 retval = u132_write_pcimem(u132, hcca, 0x00000000);
1704 if (retval)
1705 return retval;
1706 retval = u132_periodic_reinit(u132);
1707 if (retval)
1708 return retval;
1709 retval = u132_read_pcimem(u132, fminterval, &fminterval);
1710 if (retval)
1711 return retval;
1712 retval = u132_read_pcimem(u132, periodicstart, &periodicstart);
1713 if (retval)
1714 return retval;
1715 if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) {
1716 if (!(u132->flags & OHCI_QUIRK_INITRESET)) {
1717 u132->flags |= OHCI_QUIRK_INITRESET;
1718 goto retry;
1719 } else
1720 dev_err(&u132->platform_dev->dev, "init err(%08x %04x)"
1721 "\n", fminterval, periodicstart);
1722 } /* start controller operations */
1723 u132->hc_control &= OHCI_CTRL_RWC;
1724 u132->hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER;
1725 retval = u132_write_pcimem(u132, control, u132->hc_control);
1726 if (retval)
1727 return retval;
1728 retval = u132_write_pcimem(u132, cmdstatus, OHCI_BLF);
1729 if (retval)
1730 return retval;
1731 retval = u132_read_pcimem(u132, cmdstatus, &cmdstatus);
1732 if (retval)
1733 return retval;
1734 retval = u132_read_pcimem(u132, control, &control);
1735 if (retval)
1736 return retval;
1737 u132_to_hcd(u132)->state = HC_STATE_RUNNING;
1738 retval = u132_write_pcimem(u132, roothub.status, RH_HS_DRWE);
1739 if (retval)
1740 return retval;
1741 retval = u132_write_pcimem(u132, intrstatus, mask);
1742 if (retval)
1743 return retval;
1744 retval = u132_write_pcimem(u132, intrdisable,
1745 OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO |
1746 OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH |
1747 OHCI_INTR_SO);
1748 if (retval)
1749 return retval; /* handle root hub init quirks ... */
1750 retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
1751 if (retval)
1752 return retval;
1753 roothub_a &= ~(RH_A_PSM | RH_A_OCPM);
1754 if (u132->flags & OHCI_QUIRK_SUPERIO) {
1755 roothub_a |= RH_A_NOCP;
1756 roothub_a &= ~(RH_A_POTPGT | RH_A_NPS);
1757 retval = u132_write_pcimem(u132, roothub.a, roothub_a);
1758 if (retval)
1759 return retval;
1760 } else if ((u132->flags & OHCI_QUIRK_AMD756) || distrust_firmware) {
1761 roothub_a |= RH_A_NPS;
1762 retval = u132_write_pcimem(u132, roothub.a, roothub_a);
1763 if (retval)
1764 return retval;
1765 }
1766 retval = u132_write_pcimem(u132, roothub.status, RH_HS_LPSC);
1767 if (retval)
1768 return retval;
1769 retval = u132_write_pcimem(u132, roothub.b,
1770 (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM);
1771 if (retval)
1772 return retval;
1773 retval = u132_read_pcimem(u132, control, &control);
1774 if (retval)
1775 return retval;
1776 mdelay((roothub_a >> 23) & 0x1fe);
1777 u132_to_hcd(u132)->state = HC_STATE_RUNNING;
1778 return 0;
1779 }
1780
1781 static void u132_hcd_stop(struct usb_hcd *hcd)
1782 {
1783 struct u132 *u132 = hcd_to_u132(hcd);
1784 if (u132->going > 1) {
1785 dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p) has b"
1786 "een removed %d\n", u132, hcd, u132->going);
1787 } else if (u132->going > 0) {
1788 dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
1789 "ed\n", hcd);
1790 } else {
1791 mutex_lock(&u132->sw_lock);
1792 msleep(100);
1793 u132_power(u132, 0);
1794 mutex_unlock(&u132->sw_lock);
1795 }
1796 }
1797
1798 static int u132_hcd_start(struct usb_hcd *hcd)
1799 {
1800 struct u132 *u132 = hcd_to_u132(hcd);
1801 if (u132->going > 1) {
1802 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1803 , u132->going);
1804 return -ENODEV;
1805 } else if (u132->going > 0) {
1806 dev_err(&u132->platform_dev->dev, "device is being removed\n");
1807 return -ESHUTDOWN;
1808 } else if (hcd->self.controller) {
1809 int retval;
1810 struct platform_device *pdev =
1811 to_platform_device(hcd->self.controller);
1812 u16 vendor = ((struct u132_platform_data *)
1813 (pdev->dev.platform_data))->vendor;
1814 u16 device = ((struct u132_platform_data *)
1815 (pdev->dev.platform_data))->device;
1816 mutex_lock(&u132->sw_lock);
1817 msleep(10);
1818 if (vendor == PCI_VENDOR_ID_AMD && device == 0x740c) {
1819 u132->flags = OHCI_QUIRK_AMD756;
1820 } else if (vendor == PCI_VENDOR_ID_OPTI && device == 0xc861) {
1821 dev_err(&u132->platform_dev->dev, "WARNING: OPTi workar"
1822 "ounds unavailable\n");
1823 } else if (vendor == PCI_VENDOR_ID_COMPAQ && device == 0xa0f8)
1824 u132->flags |= OHCI_QUIRK_ZFMICRO;
1825 retval = u132_run(u132);
1826 if (retval) {
1827 u132_disable(u132);
1828 u132->going = 1;
1829 }
1830 msleep(100);
1831 mutex_unlock(&u132->sw_lock);
1832 return retval;
1833 } else {
1834 dev_err(&u132->platform_dev->dev, "platform_device missing\n");
1835 return -ENODEV;
1836 }
1837 }
1838
1839 static int u132_hcd_reset(struct usb_hcd *hcd)
1840 {
1841 struct u132 *u132 = hcd_to_u132(hcd);
1842 if (u132->going > 1) {
1843 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1844 , u132->going);
1845 return -ENODEV;
1846 } else if (u132->going > 0) {
1847 dev_err(&u132->platform_dev->dev, "device is being removed\n");
1848 return -ESHUTDOWN;
1849 } else {
1850 int retval;
1851 mutex_lock(&u132->sw_lock);
1852 retval = u132_init(u132);
1853 if (retval) {
1854 u132_disable(u132);
1855 u132->going = 1;
1856 }
1857 mutex_unlock(&u132->sw_lock);
1858 return retval;
1859 }
1860 }
1861
1862 static int create_endpoint_and_queue_int(struct u132 *u132,
1863 struct u132_udev *udev, struct urb *urb,
1864 struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
1865 gfp_t mem_flags)
1866 {
1867 struct u132_ring *ring;
1868 unsigned long irqs;
1869 int rc;
1870 u8 endp_number;
1871 struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
1872
1873 if (!endp)
1874 return -ENOMEM;
1875
1876 spin_lock_init(&endp->queue_lock.slock);
1877 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
1878 rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
1879 if (rc) {
1880 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1881 kfree(endp);
1882 return rc;
1883 }
1884
1885 endp_number = ++u132->num_endpoints;
1886 urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
1887 INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
1888 INIT_LIST_HEAD(&endp->urb_more);
1889 ring = endp->ring = &u132->ring[0];
1890 if (ring->curr_endp) {
1891 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
1892 } else {
1893 INIT_LIST_HEAD(&endp->endp_ring);
1894 ring->curr_endp = endp;
1895 }
1896 ring->length += 1;
1897 endp->dequeueing = 0;
1898 endp->edset_flush = 0;
1899 endp->active = 0;
1900 endp->delayed = 0;
1901 endp->endp_number = endp_number;
1902 endp->u132 = u132;
1903 endp->hep = urb->ep;
1904 endp->pipetype = usb_pipetype(urb->pipe);
1905 u132_endp_init_kref(u132, endp);
1906 if (usb_pipein(urb->pipe)) {
1907 endp->toggle_bits = 0x2;
1908 usb_settoggle(udev->usb_device, usb_endp, 0, 0);
1909 endp->input = 1;
1910 endp->output = 0;
1911 udev->endp_number_in[usb_endp] = endp_number;
1912 u132_udev_get_kref(u132, udev);
1913 } else {
1914 endp->toggle_bits = 0x2;
1915 usb_settoggle(udev->usb_device, usb_endp, 1, 0);
1916 endp->input = 0;
1917 endp->output = 1;
1918 udev->endp_number_out[usb_endp] = endp_number;
1919 u132_udev_get_kref(u132, udev);
1920 }
1921 urb->hcpriv = u132;
1922 endp->delayed = 1;
1923 endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
1924 endp->udev_number = address;
1925 endp->usb_addr = usb_addr;
1926 endp->usb_endp = usb_endp;
1927 endp->queue_size = 1;
1928 endp->queue_last = 0;
1929 endp->queue_next = 0;
1930 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
1931 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1932 u132_endp_queue_work(u132, endp, msecs_to_jiffies(urb->interval));
1933 return 0;
1934 }
1935
1936 static int queue_int_on_old_endpoint(struct u132 *u132,
1937 struct u132_udev *udev, struct urb *urb,
1938 struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
1939 u8 usb_endp, u8 address)
1940 {
1941 urb->hcpriv = u132;
1942 endp->delayed = 1;
1943 endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
1944 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
1945 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
1946 } else {
1947 struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
1948 GFP_ATOMIC);
1949 if (urbq == NULL) {
1950 endp->queue_size -= 1;
1951 return -ENOMEM;
1952 } else {
1953 list_add_tail(&urbq->urb_more, &endp->urb_more);
1954 urbq->urb = urb;
1955 }
1956 }
1957 return 0;
1958 }
1959
1960 static int create_endpoint_and_queue_bulk(struct u132 *u132,
1961 struct u132_udev *udev, struct urb *urb,
1962 struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
1963 gfp_t mem_flags)
1964 {
1965 int ring_number;
1966 struct u132_ring *ring;
1967 unsigned long irqs;
1968 int rc;
1969 u8 endp_number;
1970 struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
1971
1972 if (!endp)
1973 return -ENOMEM;
1974
1975 spin_lock_init(&endp->queue_lock.slock);
1976 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
1977 rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
1978 if (rc) {
1979 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1980 kfree(endp);
1981 return rc;
1982 }
1983
1984 endp_number = ++u132->num_endpoints;
1985 urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
1986 INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
1987 INIT_LIST_HEAD(&endp->urb_more);
1988 endp->dequeueing = 0;
1989 endp->edset_flush = 0;
1990 endp->active = 0;
1991 endp->delayed = 0;
1992 endp->endp_number = endp_number;
1993 endp->u132 = u132;
1994 endp->hep = urb->ep;
1995 endp->pipetype = usb_pipetype(urb->pipe);
1996 u132_endp_init_kref(u132, endp);
1997 if (usb_pipein(urb->pipe)) {
1998 endp->toggle_bits = 0x2;
1999 usb_settoggle(udev->usb_device, usb_endp, 0, 0);
2000 ring_number = 3;
2001 endp->input = 1;
2002 endp->output = 0;
2003 udev->endp_number_in[usb_endp] = endp_number;
2004 u132_udev_get_kref(u132, udev);
2005 } else {
2006 endp->toggle_bits = 0x2;
2007 usb_settoggle(udev->usb_device, usb_endp, 1, 0);
2008 ring_number = 2;
2009 endp->input = 0;
2010 endp->output = 1;
2011 udev->endp_number_out[usb_endp] = endp_number;
2012 u132_udev_get_kref(u132, udev);
2013 }
2014 ring = endp->ring = &u132->ring[ring_number - 1];
2015 if (ring->curr_endp) {
2016 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
2017 } else {
2018 INIT_LIST_HEAD(&endp->endp_ring);
2019 ring->curr_endp = endp;
2020 }
2021 ring->length += 1;
2022 urb->hcpriv = u132;
2023 endp->udev_number = address;
2024 endp->usb_addr = usb_addr;
2025 endp->usb_endp = usb_endp;
2026 endp->queue_size = 1;
2027 endp->queue_last = 0;
2028 endp->queue_next = 0;
2029 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2030 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2031 u132_endp_queue_work(u132, endp, 0);
2032 return 0;
2033 }
2034
2035 static int queue_bulk_on_old_endpoint(struct u132 *u132, struct u132_udev *udev,
2036 struct urb *urb,
2037 struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
2038 u8 usb_endp, u8 address)
2039 {
2040 urb->hcpriv = u132;
2041 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2042 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2043 } else {
2044 struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
2045 GFP_ATOMIC);
2046 if (urbq == NULL) {
2047 endp->queue_size -= 1;
2048 return -ENOMEM;
2049 } else {
2050 list_add_tail(&urbq->urb_more, &endp->urb_more);
2051 urbq->urb = urb;
2052 }
2053 }
2054 return 0;
2055 }
2056
2057 static int create_endpoint_and_queue_control(struct u132 *u132,
2058 struct urb *urb,
2059 struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp,
2060 gfp_t mem_flags)
2061 {
2062 struct u132_ring *ring;
2063 unsigned long irqs;
2064 int rc;
2065 u8 endp_number;
2066 struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
2067
2068 if (!endp)
2069 return -ENOMEM;
2070
2071 spin_lock_init(&endp->queue_lock.slock);
2072 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
2073 rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
2074 if (rc) {
2075 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2076 kfree(endp);
2077 return rc;
2078 }
2079
2080 endp_number = ++u132->num_endpoints;
2081 urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
2082 INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
2083 INIT_LIST_HEAD(&endp->urb_more);
2084 ring = endp->ring = &u132->ring[0];
2085 if (ring->curr_endp) {
2086 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
2087 } else {
2088 INIT_LIST_HEAD(&endp->endp_ring);
2089 ring->curr_endp = endp;
2090 }
2091 ring->length += 1;
2092 endp->dequeueing = 0;
2093 endp->edset_flush = 0;
2094 endp->active = 0;
2095 endp->delayed = 0;
2096 endp->endp_number = endp_number;
2097 endp->u132 = u132;
2098 endp->hep = urb->ep;
2099 u132_endp_init_kref(u132, endp);
2100 u132_endp_get_kref(u132, endp);
2101 if (usb_addr == 0) {
2102 u8 address = u132->addr[usb_addr].address;
2103 struct u132_udev *udev = &u132->udev[address];
2104 endp->udev_number = address;
2105 endp->usb_addr = usb_addr;
2106 endp->usb_endp = usb_endp;
2107 endp->input = 1;
2108 endp->output = 1;
2109 endp->pipetype = usb_pipetype(urb->pipe);
2110 u132_udev_init_kref(u132, udev);
2111 u132_udev_get_kref(u132, udev);
2112 udev->endp_number_in[usb_endp] = endp_number;
2113 udev->endp_number_out[usb_endp] = endp_number;
2114 urb->hcpriv = u132;
2115 endp->queue_size = 1;
2116 endp->queue_last = 0;
2117 endp->queue_next = 0;
2118 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2119 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2120 u132_endp_queue_work(u132, endp, 0);
2121 return 0;
2122 } else { /*(usb_addr > 0) */
2123 u8 address = u132->addr[usb_addr].address;
2124 struct u132_udev *udev = &u132->udev[address];
2125 endp->udev_number = address;
2126 endp->usb_addr = usb_addr;
2127 endp->usb_endp = usb_endp;
2128 endp->input = 1;
2129 endp->output = 1;
2130 endp->pipetype = usb_pipetype(urb->pipe);
2131 u132_udev_get_kref(u132, udev);
2132 udev->enumeration = 2;
2133 udev->endp_number_in[usb_endp] = endp_number;
2134 udev->endp_number_out[usb_endp] = endp_number;
2135 urb->hcpriv = u132;
2136 endp->queue_size = 1;
2137 endp->queue_last = 0;
2138 endp->queue_next = 0;
2139 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2140 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2141 u132_endp_queue_work(u132, endp, 0);
2142 return 0;
2143 }
2144 }
2145
2146 static int queue_control_on_old_endpoint(struct u132 *u132,
2147 struct urb *urb,
2148 struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
2149 u8 usb_endp)
2150 {
2151 if (usb_addr == 0) {
2152 if (usb_pipein(urb->pipe)) {
2153 urb->hcpriv = u132;
2154 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2155 endp->urb_list[ENDP_QUEUE_MASK &
2156 endp->queue_last++] = urb;
2157 } else {
2158 struct u132_urbq *urbq =
2159 kmalloc(sizeof(struct u132_urbq),
2160 GFP_ATOMIC);
2161 if (urbq == NULL) {
2162 endp->queue_size -= 1;
2163 return -ENOMEM;
2164 } else {
2165 list_add_tail(&urbq->urb_more,
2166 &endp->urb_more);
2167 urbq->urb = urb;
2168 }
2169 }
2170 return 0;
2171 } else { /* usb_pipeout(urb->pipe) */
2172 struct u132_addr *addr = &u132->addr[usb_dev->devnum];
2173 int I = MAX_U132_UDEVS;
2174 int i = 0;
2175 while (--I > 0) {
2176 struct u132_udev *udev = &u132->udev[++i];
2177 if (udev->usb_device) {
2178 continue;
2179 } else {
2180 udev->enumeration = 1;
2181 u132->addr[0].address = i;
2182 endp->udev_number = i;
2183 udev->udev_number = i;
2184 udev->usb_addr = usb_dev->devnum;
2185 u132_udev_init_kref(u132, udev);
2186 udev->endp_number_in[usb_endp] =
2187 endp->endp_number;
2188 u132_udev_get_kref(u132, udev);
2189 udev->endp_number_out[usb_endp] =
2190 endp->endp_number;
2191 udev->usb_device = usb_dev;
2192 ((u8 *) (urb->setup_packet))[2] =
2193 addr->address = i;
2194 u132_udev_get_kref(u132, udev);
2195 break;
2196 }
2197 }
2198 if (I == 0) {
2199 dev_err(&u132->platform_dev->dev, "run out of d"
2200 "evice space\n");
2201 return -EINVAL;
2202 }
2203 urb->hcpriv = u132;
2204 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2205 endp->urb_list[ENDP_QUEUE_MASK &
2206 endp->queue_last++] = urb;
2207 } else {
2208 struct u132_urbq *urbq =
2209 kmalloc(sizeof(struct u132_urbq),
2210 GFP_ATOMIC);
2211 if (urbq == NULL) {
2212 endp->queue_size -= 1;
2213 return -ENOMEM;
2214 } else {
2215 list_add_tail(&urbq->urb_more,
2216 &endp->urb_more);
2217 urbq->urb = urb;
2218 }
2219 }
2220 return 0;
2221 }
2222 } else { /*(usb_addr > 0) */
2223 u8 address = u132->addr[usb_addr].address;
2224 struct u132_udev *udev = &u132->udev[address];
2225 urb->hcpriv = u132;
2226 if (udev->enumeration != 2)
2227 udev->enumeration = 2;
2228 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2229 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
2230 urb;
2231 } else {
2232 struct u132_urbq *urbq =
2233 kmalloc(sizeof(struct u132_urbq), GFP_ATOMIC);
2234 if (urbq == NULL) {
2235 endp->queue_size -= 1;
2236 return -ENOMEM;
2237 } else {
2238 list_add_tail(&urbq->urb_more, &endp->urb_more);
2239 urbq->urb = urb;
2240 }
2241 }
2242 return 0;
2243 }
2244 }
2245
2246 static int u132_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
2247 gfp_t mem_flags)
2248 {
2249 struct u132 *u132 = hcd_to_u132(hcd);
2250 if (irqs_disabled()) {
2251 if (__GFP_WAIT & mem_flags) {
2252 printk(KERN_ERR "invalid context for function that migh"
2253 "t sleep\n");
2254 return -EINVAL;
2255 }
2256 }
2257 if (u132->going > 1) {
2258 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2259 , u132->going);
2260 return -ENODEV;
2261 } else if (u132->going > 0) {
2262 dev_err(&u132->platform_dev->dev, "device is being removed "
2263 "urb=%p\n", urb);
2264 return -ESHUTDOWN;
2265 } else {
2266 u8 usb_addr = usb_pipedevice(urb->pipe);
2267 u8 usb_endp = usb_pipeendpoint(urb->pipe);
2268 struct usb_device *usb_dev = urb->dev;
2269 if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) {
2270 u8 address = u132->addr[usb_addr].address;
2271 struct u132_udev *udev = &u132->udev[address];
2272 struct u132_endp *endp = urb->ep->hcpriv;
2273 urb->actual_length = 0;
2274 if (endp) {
2275 unsigned long irqs;
2276 int retval;
2277 spin_lock_irqsave(&endp->queue_lock.slock,
2278 irqs);
2279 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2280 if (retval == 0) {
2281 retval = queue_int_on_old_endpoint(
2282 u132, udev, urb,
2283 usb_dev, endp,
2284 usb_addr, usb_endp,
2285 address);
2286 if (retval)
2287 usb_hcd_unlink_urb_from_ep(
2288 hcd, urb);
2289 }
2290 spin_unlock_irqrestore(&endp->queue_lock.slock,
2291 irqs);
2292 if (retval) {
2293 return retval;
2294 } else {
2295 u132_endp_queue_work(u132, endp,
2296 msecs_to_jiffies(urb->interval))
2297 ;
2298 return 0;
2299 }
2300 } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2301 return -EINVAL;
2302 } else { /*(endp == NULL) */
2303 return create_endpoint_and_queue_int(u132, udev,
2304 urb, usb_dev, usb_addr,
2305 usb_endp, address, mem_flags);
2306 }
2307 } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
2308 dev_err(&u132->platform_dev->dev, "the hardware does no"
2309 "t support PIPE_ISOCHRONOUS\n");
2310 return -EINVAL;
2311 } else if (usb_pipetype(urb->pipe) == PIPE_BULK) {
2312 u8 address = u132->addr[usb_addr].address;
2313 struct u132_udev *udev = &u132->udev[address];
2314 struct u132_endp *endp = urb->ep->hcpriv;
2315 urb->actual_length = 0;
2316 if (endp) {
2317 unsigned long irqs;
2318 int retval;
2319 spin_lock_irqsave(&endp->queue_lock.slock,
2320 irqs);
2321 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2322 if (retval == 0) {
2323 retval = queue_bulk_on_old_endpoint(
2324 u132, udev, urb,
2325 usb_dev, endp,
2326 usb_addr, usb_endp,
2327 address);
2328 if (retval)
2329 usb_hcd_unlink_urb_from_ep(
2330 hcd, urb);
2331 }
2332 spin_unlock_irqrestore(&endp->queue_lock.slock,
2333 irqs);
2334 if (retval) {
2335 return retval;
2336 } else {
2337 u132_endp_queue_work(u132, endp, 0);
2338 return 0;
2339 }
2340 } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2341 return -EINVAL;
2342 } else
2343 return create_endpoint_and_queue_bulk(u132,
2344 udev, urb, usb_dev, usb_addr,
2345 usb_endp, address, mem_flags);
2346 } else {
2347 struct u132_endp *endp = urb->ep->hcpriv;
2348 u16 urb_size = 8;
2349 u8 *b = urb->setup_packet;
2350 int i = 0;
2351 char data[30 * 3 + 4];
2352 char *d = data;
2353 int m = (sizeof(data) - 1) / 3;
2354 int l = 0;
2355 data[0] = 0;
2356 while (urb_size-- > 0) {
2357 if (i > m) {
2358 } else if (i++ < m) {
2359 int w = sprintf(d, " %02X", *b++);
2360 d += w;
2361 l += w;
2362 } else
2363 d += sprintf(d, " ..");
2364 }
2365 if (endp) {
2366 unsigned long irqs;
2367 int retval;
2368 spin_lock_irqsave(&endp->queue_lock.slock,
2369 irqs);
2370 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2371 if (retval == 0) {
2372 retval = queue_control_on_old_endpoint(
2373 u132, urb, usb_dev,
2374 endp, usb_addr,
2375 usb_endp);
2376 if (retval)
2377 usb_hcd_unlink_urb_from_ep(
2378 hcd, urb);
2379 }
2380 spin_unlock_irqrestore(&endp->queue_lock.slock,
2381 irqs);
2382 if (retval) {
2383 return retval;
2384 } else {
2385 u132_endp_queue_work(u132, endp, 0);
2386 return 0;
2387 }
2388 } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2389 return -EINVAL;
2390 } else
2391 return create_endpoint_and_queue_control(u132,
2392 urb, usb_dev, usb_addr, usb_endp,
2393 mem_flags);
2394 }
2395 }
2396 }
2397
2398 static int dequeue_from_overflow_chain(struct u132 *u132,
2399 struct u132_endp *endp, struct urb *urb)
2400 {
2401 struct list_head *scan;
2402 struct list_head *head = &endp->urb_more;
2403 list_for_each(scan, head) {
2404 struct u132_urbq *urbq = list_entry(scan, struct u132_urbq,
2405 urb_more);
2406 if (urbq->urb == urb) {
2407 struct usb_hcd *hcd = u132_to_hcd(u132);
2408 list_del(scan);
2409 endp->queue_size -= 1;
2410 urb->error_count = 0;
2411 usb_hcd_giveback_urb(hcd, urb, 0);
2412 return 0;
2413 } else
2414 continue;
2415 }
2416 dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]=%p ring"
2417 "[%d] %c%c usb_endp=%d usb_addr=%d size=%d next=%04X last=%04X"
2418 "\n", urb, endp->endp_number, endp, endp->ring->number,
2419 endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
2420 endp->usb_endp, endp->usb_addr, endp->queue_size,
2421 endp->queue_next, endp->queue_last);
2422 return -EINVAL;
2423 }
2424
2425 static int u132_endp_urb_dequeue(struct u132 *u132, struct u132_endp *endp,
2426 struct urb *urb, int status)
2427 {
2428 unsigned long irqs;
2429 int rc;
2430
2431 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
2432 rc = usb_hcd_check_unlink_urb(u132_to_hcd(u132), urb, status);
2433 if (rc) {
2434 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2435 return rc;
2436 }
2437 if (endp->queue_size == 0) {
2438 dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]"
2439 "=%p ring[%d] %c%c usb_endp=%d usb_addr=%d\n", urb,
2440 endp->endp_number, endp, endp->ring->number,
2441 endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
2442 endp->usb_endp, endp->usb_addr);
2443 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2444 return -EINVAL;
2445 }
2446 if (urb == endp->urb_list[ENDP_QUEUE_MASK & endp->queue_next]) {
2447 if (endp->active) {
2448 endp->dequeueing = 1;
2449 endp->edset_flush = 1;
2450 u132_endp_queue_work(u132, endp, 0);
2451 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2452 return 0;
2453 } else {
2454 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2455 u132_hcd_abandon_urb(u132, endp, urb, status);
2456 return 0;
2457 }
2458 } else {
2459 u16 queue_list = 0;
2460 u16 queue_size = endp->queue_size;
2461 u16 queue_scan = endp->queue_next;
2462 struct urb **urb_slot = NULL;
2463 while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
2464 if (urb == endp->urb_list[ENDP_QUEUE_MASK &
2465 ++queue_scan]) {
2466 urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
2467 queue_scan];
2468 break;
2469 } else
2470 continue;
2471 }
2472 while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
2473 *urb_slot = endp->urb_list[ENDP_QUEUE_MASK &
2474 ++queue_scan];
2475 urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
2476 queue_scan];
2477 }
2478 if (urb_slot) {
2479 struct usb_hcd *hcd = u132_to_hcd(u132);
2480
2481 usb_hcd_unlink_urb_from_ep(hcd, urb);
2482 endp->queue_size -= 1;
2483 if (list_empty(&endp->urb_more)) {
2484 spin_unlock_irqrestore(&endp->queue_lock.slock,
2485 irqs);
2486 } else {
2487 struct list_head *next = endp->urb_more.next;
2488 struct u132_urbq *urbq = list_entry(next,
2489 struct u132_urbq, urb_more);
2490 list_del(next);
2491 *urb_slot = urbq->urb;
2492 spin_unlock_irqrestore(&endp->queue_lock.slock,
2493 irqs);
2494 kfree(urbq);
2495 } urb->error_count = 0;
2496 usb_hcd_giveback_urb(hcd, urb, status);
2497 return 0;
2498 } else if (list_empty(&endp->urb_more)) {
2499 dev_err(&u132->platform_dev->dev, "urb=%p not found in "
2500 "endp[%d]=%p ring[%d] %c%c usb_endp=%d usb_addr"
2501 "=%d size=%d next=%04X last=%04X\n", urb,
2502 endp->endp_number, endp, endp->ring->number,
2503 endp->input ? 'I' : ' ',
2504 endp->output ? 'O' : ' ', endp->usb_endp,
2505 endp->usb_addr, endp->queue_size,
2506 endp->queue_next, endp->queue_last);
2507 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2508 return -EINVAL;
2509 } else {
2510 int retval;
2511
2512 usb_hcd_unlink_urb_from_ep(u132_to_hcd(u132), urb);
2513 retval = dequeue_from_overflow_chain(u132, endp,
2514 urb);
2515 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2516 return retval;
2517 }
2518 }
2519 }
2520
2521 static int u132_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
2522 {
2523 struct u132 *u132 = hcd_to_u132(hcd);
2524 if (u132->going > 2) {
2525 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2526 , u132->going);
2527 return -ENODEV;
2528 } else {
2529 u8 usb_addr = usb_pipedevice(urb->pipe);
2530 u8 usb_endp = usb_pipeendpoint(urb->pipe);
2531 u8 address = u132->addr[usb_addr].address;
2532 struct u132_udev *udev = &u132->udev[address];
2533 if (usb_pipein(urb->pipe)) {
2534 u8 endp_number = udev->endp_number_in[usb_endp];
2535 struct u132_endp *endp = u132->endp[endp_number - 1];
2536 return u132_endp_urb_dequeue(u132, endp, urb, status);
2537 } else {
2538 u8 endp_number = udev->endp_number_out[usb_endp];
2539 struct u132_endp *endp = u132->endp[endp_number - 1];
2540 return u132_endp_urb_dequeue(u132, endp, urb, status);
2541 }
2542 }
2543 }
2544
2545 static void u132_endpoint_disable(struct usb_hcd *hcd,
2546 struct usb_host_endpoint *hep)
2547 {
2548 struct u132 *u132 = hcd_to_u132(hcd);
2549 if (u132->going > 2) {
2550 dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p hep=%p"
2551 ") has been removed %d\n", u132, hcd, hep,
2552 u132->going);
2553 } else {
2554 struct u132_endp *endp = hep->hcpriv;
2555 if (endp)
2556 u132_endp_put_kref(u132, endp);
2557 }
2558 }
2559
2560 static int u132_get_frame(struct usb_hcd *hcd)
2561 {
2562 struct u132 *u132 = hcd_to_u132(hcd);
2563 if (u132->going > 1) {
2564 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2565 , u132->going);
2566 return -ENODEV;
2567 } else if (u132->going > 0) {
2568 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2569 return -ESHUTDOWN;
2570 } else {
2571 int frame = 0;
2572 dev_err(&u132->platform_dev->dev, "TODO: u132_get_frame\n");
2573 msleep(100);
2574 return frame;
2575 }
2576 }
2577
2578 static int u132_roothub_descriptor(struct u132 *u132,
2579 struct usb_hub_descriptor *desc)
2580 {
2581 int retval;
2582 u16 temp;
2583 u32 rh_a = -1;
2584 u32 rh_b = -1;
2585 retval = u132_read_pcimem(u132, roothub.a, &rh_a);
2586 if (retval)
2587 return retval;
2588 desc->bDescriptorType = 0x29;
2589 desc->bPwrOn2PwrGood = (rh_a & RH_A_POTPGT) >> 24;
2590 desc->bHubContrCurrent = 0;
2591 desc->bNbrPorts = u132->num_ports;
2592 temp = 1 + (u132->num_ports / 8);
2593 desc->bDescLength = 7 + 2 * temp;
2594 temp = 0;
2595 if (rh_a & RH_A_NPS)
2596 temp |= 0x0002;
2597 if (rh_a & RH_A_PSM)
2598 temp |= 0x0001;
2599 if (rh_a & RH_A_NOCP)
2600 temp |= 0x0010;
2601 else if (rh_a & RH_A_OCPM)
2602 temp |= 0x0008;
2603 desc->wHubCharacteristics = cpu_to_le16(temp);
2604 retval = u132_read_pcimem(u132, roothub.b, &rh_b);
2605 if (retval)
2606 return retval;
2607 memset(desc->u.hs.DeviceRemovable, 0xff,
2608 sizeof(desc->u.hs.DeviceRemovable));
2609 desc->u.hs.DeviceRemovable[0] = rh_b & RH_B_DR;
2610 if (u132->num_ports > 7) {
2611 desc->u.hs.DeviceRemovable[1] = (rh_b & RH_B_DR) >> 8;
2612 desc->u.hs.DeviceRemovable[2] = 0xff;
2613 } else
2614 desc->u.hs.DeviceRemovable[1] = 0xff;
2615 return 0;
2616 }
2617
2618 static int u132_roothub_status(struct u132 *u132, __le32 *desc)
2619 {
2620 u32 rh_status = -1;
2621 int ret_status = u132_read_pcimem(u132, roothub.status, &rh_status);
2622 *desc = cpu_to_le32(rh_status);
2623 return ret_status;
2624 }
2625
2626 static int u132_roothub_portstatus(struct u132 *u132, __le32 *desc, u16 wIndex)
2627 {
2628 if (wIndex == 0 || wIndex > u132->num_ports) {
2629 return -EINVAL;
2630 } else {
2631 int port = wIndex - 1;
2632 u32 rh_portstatus = -1;
2633 int ret_portstatus = u132_read_pcimem(u132,
2634 roothub.portstatus[port], &rh_portstatus);
2635 *desc = cpu_to_le32(rh_portstatus);
2636 if (*(u16 *) (desc + 2)) {
2637 dev_info(&u132->platform_dev->dev, "Port %d Status Chan"
2638 "ge = %08X\n", port, *desc);
2639 }
2640 return ret_portstatus;
2641 }
2642 }
2643
2644
2645 /* this timer value might be vendor-specific ... */
2646 #define PORT_RESET_HW_MSEC 10
2647 #define PORT_RESET_MSEC 10
2648 /* wrap-aware logic morphed from <linux/jiffies.h> */
2649 #define tick_before(t1, t2) ((s16)(((s16)(t1))-((s16)(t2))) < 0)
2650 static int u132_roothub_portreset(struct u132 *u132, int port_index)
2651 {
2652 int retval;
2653 u32 fmnumber;
2654 u16 now;
2655 u16 reset_done;
2656 retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2657 if (retval)
2658 return retval;
2659 now = fmnumber;
2660 reset_done = now + PORT_RESET_MSEC;
2661 do {
2662 u32 portstat;
2663 do {
2664 retval = u132_read_pcimem(u132,
2665 roothub.portstatus[port_index], &portstat);
2666 if (retval)
2667 return retval;
2668 if (RH_PS_PRS & portstat)
2669 continue;
2670 else
2671 break;
2672 } while (tick_before(now, reset_done));
2673 if (RH_PS_PRS & portstat)
2674 return -ENODEV;
2675 if (RH_PS_CCS & portstat) {
2676 if (RH_PS_PRSC & portstat) {
2677 retval = u132_write_pcimem(u132,
2678 roothub.portstatus[port_index],
2679 RH_PS_PRSC);
2680 if (retval)
2681 return retval;
2682 }
2683 } else
2684 break; /* start the next reset,
2685 sleep till it's probably done */
2686 retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
2687 RH_PS_PRS);
2688 if (retval)
2689 return retval;
2690 msleep(PORT_RESET_HW_MSEC);
2691 retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2692 if (retval)
2693 return retval;
2694 now = fmnumber;
2695 } while (tick_before(now, reset_done));
2696 return 0;
2697 }
2698
2699 static int u132_roothub_setportfeature(struct u132 *u132, u16 wValue,
2700 u16 wIndex)
2701 {
2702 if (wIndex == 0 || wIndex > u132->num_ports) {
2703 return -EINVAL;
2704 } else {
2705 int retval;
2706 int port_index = wIndex - 1;
2707 struct u132_port *port = &u132->port[port_index];
2708 port->Status &= ~(1 << wValue);
2709 switch (wValue) {
2710 case USB_PORT_FEAT_SUSPEND:
2711 retval = u132_write_pcimem(u132,
2712 roothub.portstatus[port_index], RH_PS_PSS);
2713 if (retval)
2714 return retval;
2715 return 0;
2716 case USB_PORT_FEAT_POWER:
2717 retval = u132_write_pcimem(u132,
2718 roothub.portstatus[port_index], RH_PS_PPS);
2719 if (retval)
2720 return retval;
2721 return 0;
2722 case USB_PORT_FEAT_RESET:
2723 retval = u132_roothub_portreset(u132, port_index);
2724 if (retval)
2725 return retval;
2726 return 0;
2727 default:
2728 return -EPIPE;
2729 }
2730 }
2731 }
2732
2733 static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
2734 u16 wIndex)
2735 {
2736 if (wIndex == 0 || wIndex > u132->num_ports) {
2737 return -EINVAL;
2738 } else {
2739 int port_index = wIndex - 1;
2740 u32 temp;
2741 int retval;
2742 struct u132_port *port = &u132->port[port_index];
2743 port->Status &= ~(1 << wValue);
2744 switch (wValue) {
2745 case USB_PORT_FEAT_ENABLE:
2746 temp = RH_PS_CCS;
2747 break;
2748 case USB_PORT_FEAT_C_ENABLE:
2749 temp = RH_PS_PESC;
2750 break;
2751 case USB_PORT_FEAT_SUSPEND:
2752 temp = RH_PS_POCI;
2753 if ((u132->hc_control & OHCI_CTRL_HCFS)
2754 != OHCI_USB_OPER) {
2755 dev_err(&u132->platform_dev->dev, "TODO resume_"
2756 "root_hub\n");
2757 }
2758 break;
2759 case USB_PORT_FEAT_C_SUSPEND:
2760 temp = RH_PS_PSSC;
2761 break;
2762 case USB_PORT_FEAT_POWER:
2763 temp = RH_PS_LSDA;
2764 break;
2765 case USB_PORT_FEAT_C_CONNECTION:
2766 temp = RH_PS_CSC;
2767 break;
2768 case USB_PORT_FEAT_C_OVER_CURRENT:
2769 temp = RH_PS_OCIC;
2770 break;
2771 case USB_PORT_FEAT_C_RESET:
2772 temp = RH_PS_PRSC;
2773 break;
2774 default:
2775 return -EPIPE;
2776 }
2777 retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
2778 temp);
2779 if (retval)
2780 return retval;
2781 return 0;
2782 }
2783 }
2784
2785
2786 /* the virtual root hub timer IRQ checks for hub status*/
2787 static int u132_hub_status_data(struct usb_hcd *hcd, char *buf)
2788 {
2789 struct u132 *u132 = hcd_to_u132(hcd);
2790 if (u132->going > 1) {
2791 dev_err(&u132->platform_dev->dev, "device hcd=%p has been remov"
2792 "ed %d\n", hcd, u132->going);
2793 return -ENODEV;
2794 } else if (u132->going > 0) {
2795 dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
2796 "ed\n", hcd);
2797 return -ESHUTDOWN;
2798 } else {
2799 int i, changed = 0, length = 1;
2800 if (u132->flags & OHCI_QUIRK_AMD756) {
2801 if ((u132->hc_roothub_a & RH_A_NDP) > MAX_ROOT_PORTS) {
2802 dev_err(&u132->platform_dev->dev, "bogus NDP, r"
2803 "ereads as NDP=%d\n",
2804 u132->hc_roothub_a & RH_A_NDP);
2805 goto done;
2806 }
2807 }
2808 if (u132->hc_roothub_status & (RH_HS_LPSC | RH_HS_OCIC))
2809 buf[0] = changed = 1;
2810 else
2811 buf[0] = 0;
2812 if (u132->num_ports > 7) {
2813 buf[1] = 0;
2814 length++;
2815 }
2816 for (i = 0; i < u132->num_ports; i++) {
2817 if (u132->hc_roothub_portstatus[i] & (RH_PS_CSC |
2818 RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC |
2819 RH_PS_PRSC)) {
2820 changed = 1;
2821 if (i < 7)
2822 buf[0] |= 1 << (i + 1);
2823 else
2824 buf[1] |= 1 << (i - 7);
2825 continue;
2826 }
2827 if (!(u132->hc_roothub_portstatus[i] & RH_PS_CCS))
2828 continue;
2829
2830 if ((u132->hc_roothub_portstatus[i] & RH_PS_PSS))
2831 continue;
2832 }
2833 done:
2834 return changed ? length : 0;
2835 }
2836 }
2837
2838 static int u132_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2839 u16 wIndex, char *buf, u16 wLength)
2840 {
2841 struct u132 *u132 = hcd_to_u132(hcd);
2842 if (u132->going > 1) {
2843 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2844 , u132->going);
2845 return -ENODEV;
2846 } else if (u132->going > 0) {
2847 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2848 return -ESHUTDOWN;
2849 } else {
2850 int retval = 0;
2851 mutex_lock(&u132->sw_lock);
2852 switch (typeReq) {
2853 case ClearHubFeature:
2854 switch (wValue) {
2855 case C_HUB_OVER_CURRENT:
2856 case C_HUB_LOCAL_POWER:
2857 break;
2858 default:
2859 goto stall;
2860 }
2861 break;
2862 case SetHubFeature:
2863 switch (wValue) {
2864 case C_HUB_OVER_CURRENT:
2865 case C_HUB_LOCAL_POWER:
2866 break;
2867 default:
2868 goto stall;
2869 }
2870 break;
2871 case ClearPortFeature:{
2872 retval = u132_roothub_clearportfeature(u132,
2873 wValue, wIndex);
2874 if (retval)
2875 goto error;
2876 break;
2877 }
2878 case GetHubDescriptor:{
2879 retval = u132_roothub_descriptor(u132,
2880 (struct usb_hub_descriptor *)buf);
2881 if (retval)
2882 goto error;
2883 break;
2884 }
2885 case GetHubStatus:{
2886 retval = u132_roothub_status(u132,
2887 (__le32 *) buf);
2888 if (retval)
2889 goto error;
2890 break;
2891 }
2892 case GetPortStatus:{
2893 retval = u132_roothub_portstatus(u132,
2894 (__le32 *) buf, wIndex);
2895 if (retval)
2896 goto error;
2897 break;
2898 }
2899 case SetPortFeature:{
2900 retval = u132_roothub_setportfeature(u132,
2901 wValue, wIndex);
2902 if (retval)
2903 goto error;
2904 break;
2905 }
2906 default:
2907 goto stall;
2908 error:
2909 u132_disable(u132);
2910 u132->going = 1;
2911 break;
2912 stall:
2913 retval = -EPIPE;
2914 break;
2915 }
2916 mutex_unlock(&u132->sw_lock);
2917 return retval;
2918 }
2919 }
2920
2921 static int u132_start_port_reset(struct usb_hcd *hcd, unsigned port_num)
2922 {
2923 struct u132 *u132 = hcd_to_u132(hcd);
2924 if (u132->going > 1) {
2925 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2926 , u132->going);
2927 return -ENODEV;
2928 } else if (u132->going > 0) {
2929 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2930 return -ESHUTDOWN;
2931 } else
2932 return 0;
2933 }
2934
2935
2936 #ifdef CONFIG_PM
2937 static int u132_bus_suspend(struct usb_hcd *hcd)
2938 {
2939 struct u132 *u132 = hcd_to_u132(hcd);
2940 if (u132->going > 1) {
2941 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2942 , u132->going);
2943 return -ENODEV;
2944 } else if (u132->going > 0) {
2945 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2946 return -ESHUTDOWN;
2947 } else
2948 return 0;
2949 }
2950
2951 static int u132_bus_resume(struct usb_hcd *hcd)
2952 {
2953 struct u132 *u132 = hcd_to_u132(hcd);
2954 if (u132->going > 1) {
2955 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2956 , u132->going);
2957 return -ENODEV;
2958 } else if (u132->going > 0) {
2959 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2960 return -ESHUTDOWN;
2961 } else
2962 return 0;
2963 }
2964
2965 #else
2966 #define u132_bus_suspend NULL
2967 #define u132_bus_resume NULL
2968 #endif
2969 static struct hc_driver u132_hc_driver = {
2970 .description = hcd_name,
2971 .hcd_priv_size = sizeof(struct u132),
2972 .irq = NULL,
2973 .flags = HCD_USB11 | HCD_MEMORY,
2974 .reset = u132_hcd_reset,
2975 .start = u132_hcd_start,
2976 .stop = u132_hcd_stop,
2977 .urb_enqueue = u132_urb_enqueue,
2978 .urb_dequeue = u132_urb_dequeue,
2979 .endpoint_disable = u132_endpoint_disable,
2980 .get_frame_number = u132_get_frame,
2981 .hub_status_data = u132_hub_status_data,
2982 .hub_control = u132_hub_control,
2983 .bus_suspend = u132_bus_suspend,
2984 .bus_resume = u132_bus_resume,
2985 .start_port_reset = u132_start_port_reset,
2986 };
2987
2988 /*
2989 * This function may be called by the USB core whilst the "usb_all_devices_rwsem"
2990 * is held for writing, thus this module must not call usb_remove_hcd()
2991 * synchronously - but instead should immediately stop activity to the
2992 * device and asynchronously call usb_remove_hcd()
2993 */
2994 static int __devexit u132_remove(struct platform_device *pdev)
2995 {
2996 struct usb_hcd *hcd = platform_get_drvdata(pdev);
2997 if (hcd) {
2998 struct u132 *u132 = hcd_to_u132(hcd);
2999 if (u132->going++ > 1) {
3000 dev_err(&u132->platform_dev->dev, "already being remove"
3001 "d\n");
3002 return -ENODEV;
3003 } else {
3004 int rings = MAX_U132_RINGS;
3005 int endps = MAX_U132_ENDPS;
3006 dev_err(&u132->platform_dev->dev, "removing device u132"
3007 ".%d\n", u132->sequence_num);
3008 msleep(100);
3009 mutex_lock(&u132->sw_lock);
3010 u132_monitor_cancel_work(u132);
3011 while (rings-- > 0) {
3012 struct u132_ring *ring = &u132->ring[rings];
3013 u132_ring_cancel_work(u132, ring);
3014 } while (endps-- > 0) {
3015 struct u132_endp *endp = u132->endp[endps];
3016 if (endp)
3017 u132_endp_cancel_work(u132, endp);
3018 }
3019 u132->going += 1;
3020 printk(KERN_INFO "removing device u132.%d\n",
3021 u132->sequence_num);
3022 mutex_unlock(&u132->sw_lock);
3023 usb_remove_hcd(hcd);
3024 u132_u132_put_kref(u132);
3025 return 0;
3026 }
3027 } else
3028 return 0;
3029 }
3030
3031 static void u132_initialise(struct u132 *u132, struct platform_device *pdev)
3032 {
3033 int rings = MAX_U132_RINGS;
3034 int ports = MAX_U132_PORTS;
3035 int addrs = MAX_U132_ADDRS;
3036 int udevs = MAX_U132_UDEVS;
3037 int endps = MAX_U132_ENDPS;
3038 u132->board = pdev->dev.platform_data;
3039 u132->platform_dev = pdev;
3040 u132->power = 0;
3041 u132->reset = 0;
3042 mutex_init(&u132->sw_lock);
3043 mutex_init(&u132->scheduler_lock);
3044 while (rings-- > 0) {
3045 struct u132_ring *ring = &u132->ring[rings];
3046 ring->u132 = u132;
3047 ring->number = rings + 1;
3048 ring->length = 0;
3049 ring->curr_endp = NULL;
3050 INIT_DELAYED_WORK(&ring->scheduler,
3051 u132_hcd_ring_work_scheduler);
3052 }
3053 mutex_lock(&u132->sw_lock);
3054 INIT_DELAYED_WORK(&u132->monitor, u132_hcd_monitor_work);
3055 while (ports-- > 0) {
3056 struct u132_port *port = &u132->port[ports];
3057 port->u132 = u132;
3058 port->reset = 0;
3059 port->enable = 0;
3060 port->power = 0;
3061 port->Status = 0;
3062 }
3063 while (addrs-- > 0) {
3064 struct u132_addr *addr = &u132->addr[addrs];
3065 addr->address = 0;
3066 }
3067 while (udevs-- > 0) {
3068 struct u132_udev *udev = &u132->udev[udevs];
3069 int i = ARRAY_SIZE(udev->endp_number_in);
3070 int o = ARRAY_SIZE(udev->endp_number_out);
3071 udev->usb_device = NULL;
3072 udev->udev_number = 0;
3073 udev->usb_addr = 0;
3074 udev->portnumber = 0;
3075 while (i-- > 0)
3076 udev->endp_number_in[i] = 0;
3077
3078 while (o-- > 0)
3079 udev->endp_number_out[o] = 0;
3080
3081 }
3082 while (endps-- > 0)
3083 u132->endp[endps] = NULL;
3084
3085 mutex_unlock(&u132->sw_lock);
3086 }
3087
3088 static int __devinit u132_probe(struct platform_device *pdev)
3089 {
3090 struct usb_hcd *hcd;
3091 int retval;
3092 u32 control;
3093 u32 rh_a = -1;
3094 u32 num_ports;
3095
3096 msleep(100);
3097 if (u132_exiting > 0)
3098 return -ENODEV;
3099
3100 retval = ftdi_write_pcimem(pdev, intrdisable, OHCI_INTR_MIE);
3101 if (retval)
3102 return retval;
3103 retval = ftdi_read_pcimem(pdev, control, &control);
3104 if (retval)
3105 return retval;
3106 retval = ftdi_read_pcimem(pdev, roothub.a, &rh_a);
3107 if (retval)
3108 return retval;
3109 num_ports = rh_a & RH_A_NDP; /* refuse to confuse usbcore */
3110 if (pdev->dev.dma_mask)
3111 return -EINVAL;
3112
3113 hcd = usb_create_hcd(&u132_hc_driver, &pdev->dev, dev_name(&pdev->dev));
3114 if (!hcd) {
3115 printk(KERN_ERR "failed to create the usb hcd struct for U132\n"
3116 );
3117 ftdi_elan_gone_away(pdev);
3118 return -ENOMEM;
3119 } else {
3120 struct u132 *u132 = hcd_to_u132(hcd);
3121 retval = 0;
3122 hcd->rsrc_start = 0;
3123 mutex_lock(&u132_module_lock);
3124 list_add_tail(&u132->u132_list, &u132_static_list);
3125 u132->sequence_num = ++u132_instances;
3126 mutex_unlock(&u132_module_lock);
3127 u132_u132_init_kref(u132);
3128 u132_initialise(u132, pdev);
3129 hcd->product_desc = "ELAN U132 Host Controller";
3130 retval = usb_add_hcd(hcd, 0, 0);
3131 if (retval != 0) {
3132 dev_err(&u132->platform_dev->dev, "init error %d\n",
3133 retval);
3134 u132_u132_put_kref(u132);
3135 return retval;
3136 } else {
3137 u132_monitor_queue_work(u132, 100);
3138 return 0;
3139 }
3140 }
3141 }
3142
3143
3144 #ifdef CONFIG_PM
3145 /* for this device there's no useful distinction between the controller
3146 * and its root hub, except that the root hub only gets direct PM calls
3147 * when CONFIG_USB_SUSPEND is enabled.
3148 */
3149 static int u132_suspend(struct platform_device *pdev, pm_message_t state)
3150 {
3151 struct usb_hcd *hcd = platform_get_drvdata(pdev);
3152 struct u132 *u132 = hcd_to_u132(hcd);
3153 if (u132->going > 1) {
3154 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
3155 , u132->going);
3156 return -ENODEV;
3157 } else if (u132->going > 0) {
3158 dev_err(&u132->platform_dev->dev, "device is being removed\n");
3159 return -ESHUTDOWN;
3160 } else {
3161 int retval = 0, ports;
3162
3163 switch (state.event) {
3164 case PM_EVENT_FREEZE:
3165 retval = u132_bus_suspend(hcd);
3166 break;
3167 case PM_EVENT_SUSPEND:
3168 case PM_EVENT_HIBERNATE:
3169 ports = MAX_U132_PORTS;
3170 while (ports-- > 0) {
3171 port_power(u132, ports, 0);
3172 }
3173 break;
3174 }
3175 return retval;
3176 }
3177 }
3178
3179 static int u132_resume(struct platform_device *pdev)
3180 {
3181 struct usb_hcd *hcd = platform_get_drvdata(pdev);
3182 struct u132 *u132 = hcd_to_u132(hcd);
3183 if (u132->going > 1) {
3184 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
3185 , u132->going);
3186 return -ENODEV;
3187 } else if (u132->going > 0) {
3188 dev_err(&u132->platform_dev->dev, "device is being removed\n");
3189 return -ESHUTDOWN;
3190 } else {
3191 int retval = 0;
3192 if (!u132->port[0].power) {
3193 int ports = MAX_U132_PORTS;
3194 while (ports-- > 0) {
3195 port_power(u132, ports, 1);
3196 }
3197 retval = 0;
3198 } else {
3199 retval = u132_bus_resume(hcd);
3200 }
3201 return retval;
3202 }
3203 }
3204
3205 #else
3206 #define u132_suspend NULL
3207 #define u132_resume NULL
3208 #endif
3209 /*
3210 * this driver is loaded explicitly by ftdi_u132
3211 *
3212 * the platform_driver struct is static because it is per type of module
3213 */
3214 static struct platform_driver u132_platform_driver = {
3215 .probe = u132_probe,
3216 .remove = __devexit_p(u132_remove),
3217 .suspend = u132_suspend,
3218 .resume = u132_resume,
3219 .driver = {
3220 .name = (char *)hcd_name,
3221 .owner = THIS_MODULE,
3222 },
3223 };
3224 static int __init u132_hcd_init(void)
3225 {
3226 int retval;
3227 INIT_LIST_HEAD(&u132_static_list);
3228 u132_instances = 0;
3229 u132_exiting = 0;
3230 mutex_init(&u132_module_lock);
3231 if (usb_disabled())
3232 return -ENODEV;
3233 printk(KERN_INFO "driver %s\n", hcd_name);
3234 workqueue = create_singlethread_workqueue("u132");
3235 retval = platform_driver_register(&u132_platform_driver);
3236 return retval;
3237 }
3238
3239
3240 module_init(u132_hcd_init);
3241 static void __exit u132_hcd_exit(void)
3242 {
3243 struct u132 *u132;
3244 struct u132 *temp;
3245 mutex_lock(&u132_module_lock);
3246 u132_exiting += 1;
3247 mutex_unlock(&u132_module_lock);
3248 list_for_each_entry_safe(u132, temp, &u132_static_list, u132_list) {
3249 platform_device_unregister(u132->platform_dev);
3250 }
3251 platform_driver_unregister(&u132_platform_driver);
3252 printk(KERN_INFO "u132-hcd driver deregistered\n");
3253 wait_event(u132_hcd_wait, u132_instances == 0);
3254 flush_workqueue(workqueue);
3255 destroy_workqueue(workqueue);
3256 }
3257
3258
3259 module_exit(u132_hcd_exit);
3260 MODULE_LICENSE("GPL");
3261 MODULE_ALIAS("platform:u132_hcd");