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