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pcmcia: CompactFlash driver for PA Semi Electra boards
[pv_ops_mirror.git] / drivers / usb / host / u132-hcd.c
blobac283b09a63f873c7d362f0305bdc957617a66c8
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/workqueue.h>
53 #include <linux/platform_device.h>
54 #include <linux/mutex.h>
55 #include <asm/io.h>
56 #include <asm/irq.h>
57 #include <asm/system.h>
58 #include <asm/byteorder.h>
59 #include "../core/hcd.h"
60
61 /* FIXME ohci.h is ONLY for internal use by the OHCI driver.
62 * If you're going to try stuff like this, you need to split
63 * out shareable stuff (register declarations?) into its own
64 * file, maybe name <linux/usb/ohci.h>
65 */
66
67 #include "ohci.h"
68 #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
69 #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
70 OHCI_INTR_WDH)
71 MODULE_AUTHOR("Tony Olech - Elan Digital Systems Limited");
72 MODULE_DESCRIPTION("U132 USB Host Controller Driver");
73 MODULE_LICENSE("GPL");
74 #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
75 INT_MODULE_PARM(testing, 0);
76 /* Some boards misreport power switching/overcurrent*/
77 static int distrust_firmware = 1;
78 module_param(distrust_firmware, bool, 0);
79 MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurren"
80 "t setup");
81 static DECLARE_WAIT_QUEUE_HEAD(u132_hcd_wait);
82 /*
83 * u132_module_lock exists to protect access to global variables
84 *
85 */
86 static struct mutex u132_module_lock;
87 static int u132_exiting = 0;
88 static int u132_instances = 0;
89 static struct list_head u132_static_list;
90 /*
91 * end of the global variables protected by u132_module_lock
92 */
93 static struct workqueue_struct *workqueue;
94 #define MAX_U132_PORTS 7
95 #define MAX_U132_ADDRS 128
96 #define MAX_U132_UDEVS 4
97 #define MAX_U132_ENDPS 100
98 #define MAX_U132_RINGS 4
99 static const char *cc_to_text[16] = {
100 "No Error ",
101 "CRC Error ",
102 "Bit Stuff ",
103 "Data Togg ",
104 "Stall ",
105 "DevNotResp ",
106 "PIDCheck ",
107 "UnExpPID ",
108 "DataOver ",
109 "DataUnder ",
110 "(for hw) ",
111 "(for hw) ",
112 "BufferOver ",
113 "BuffUnder ",
114 "(for HCD) ",
115 "(for HCD) "
116 };
117 struct u132_port {
118 struct u132 *u132;
119 int reset;
120 int enable;
121 int power;
122 int Status;
123 };
124 struct u132_addr {
125 u8 address;
126 };
127 struct u132_udev {
128 struct kref kref;
129 struct usb_device *usb_device;
130 u8 enumeration;
131 u8 udev_number;
132 u8 usb_addr;
133 u8 portnumber;
134 u8 endp_number_in[16];
135 u8 endp_number_out[16];
136 };
137 #define ENDP_QUEUE_SHIFT 3
138 #define ENDP_QUEUE_SIZE (1<<ENDP_QUEUE_SHIFT)
139 #define ENDP_QUEUE_MASK (ENDP_QUEUE_SIZE-1)
140 struct u132_urbq {
141 struct list_head urb_more;
142 struct urb *urb;
143 };
144 struct u132_spin {
145 spinlock_t slock;
146 };
147 struct u132_endp {
148 struct kref kref;
149 u8 udev_number;
150 u8 endp_number;
151 u8 usb_addr;
152 u8 usb_endp;
153 struct u132 *u132;
154 struct list_head endp_ring;
155 struct u132_ring *ring;
156 unsigned toggle_bits:2;
157 unsigned active:1;
158 unsigned delayed:1;
159 unsigned input:1;
160 unsigned output:1;
161 unsigned pipetype:2;
162 unsigned dequeueing:1;
163 unsigned edset_flush:1;
164 unsigned spare_bits:14;
165 unsigned long jiffies;
166 struct usb_host_endpoint *hep;
167 struct u132_spin queue_lock;
168 u16 queue_size;
169 u16 queue_last;
170 u16 queue_next;
171 struct urb *urb_list[ENDP_QUEUE_SIZE];
172 struct list_head urb_more;
173 struct delayed_work scheduler;
174 };
175 struct u132_ring {
176 unsigned in_use:1;
177 unsigned length:7;
178 u8 number;
179 struct u132 *u132;
180 struct u132_endp *curr_endp;
181 struct delayed_work scheduler;
182 };
183 struct u132 {
184 struct kref kref;
185 struct list_head u132_list;
186 struct mutex sw_lock;
187 struct semaphore scheduler_lock;
188 struct u132_platform_data *board;
189 struct platform_device *platform_dev;
190 struct u132_ring ring[MAX_U132_RINGS];
191 int sequence_num;
192 int going;
193 int power;
194 int reset;
195 int num_ports;
196 u32 hc_control;
197 u32 hc_fminterval;
198 u32 hc_roothub_status;
199 u32 hc_roothub_a;
200 u32 hc_roothub_portstatus[MAX_ROOT_PORTS];
201 int flags;
202 unsigned long next_statechange;
203 struct delayed_work monitor;
204 int num_endpoints;
205 struct u132_addr addr[MAX_U132_ADDRS];
206 struct u132_udev udev[MAX_U132_UDEVS];
207 struct u132_port port[MAX_U132_PORTS];
208 struct u132_endp *endp[MAX_U132_ENDPS];
209 };
210
211 /*
212 * these cannot be inlines because we need the structure offset!!
213 * Does anyone have a better way?????
214 */
215 #define ftdi_read_pcimem(pdev, member, data) usb_ftdi_elan_read_pcimem(pdev, \
216 offsetof(struct ohci_regs, member), 0, data);
217 #define ftdi_write_pcimem(pdev, member, data) usb_ftdi_elan_write_pcimem(pdev, \
218 offsetof(struct ohci_regs, member), 0, data);
219 #define u132_read_pcimem(u132, member, data) \
220 usb_ftdi_elan_read_pcimem(u132->platform_dev, offsetof(struct \
221 ohci_regs, member), 0, data);
222 #define u132_write_pcimem(u132, member, data) \
223 usb_ftdi_elan_write_pcimem(u132->platform_dev, offsetof(struct \
224 ohci_regs, member), 0, data);
225 static inline struct u132 *udev_to_u132(struct u132_udev *udev)
226 {
227 u8 udev_number = udev->udev_number;
228 return container_of(udev, struct u132, udev[udev_number]);
229 }
230
231 static inline struct u132 *hcd_to_u132(struct usb_hcd *hcd)
232 {
233 return (struct u132 *)(hcd->hcd_priv);
234 }
235
236 static inline struct usb_hcd *u132_to_hcd(struct u132 *u132)
237 {
238 return container_of((void *)u132, struct usb_hcd, hcd_priv);
239 }
240
241 static inline void u132_disable(struct u132 *u132)
242 {
243 u132_to_hcd(u132)->state = HC_STATE_HALT;
244 }
245
246
247 #define kref_to_u132(d) container_of(d, struct u132, kref)
248 #define kref_to_u132_endp(d) container_of(d, struct u132_endp, kref)
249 #define kref_to_u132_udev(d) container_of(d, struct u132_udev, kref)
250 #include "../misc/usb_u132.h"
251 static const char hcd_name[] = "u132_hcd";
252 #define PORT_C_MASK ((USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE | \
253 USB_PORT_STAT_C_SUSPEND | USB_PORT_STAT_C_OVERCURRENT | \
254 USB_PORT_STAT_C_RESET) << 16)
255 static void u132_hcd_delete(struct kref *kref)
256 {
257 struct u132 *u132 = kref_to_u132(kref);
258 struct platform_device *pdev = u132->platform_dev;
259 struct usb_hcd *hcd = u132_to_hcd(u132);
260 u132->going += 1;
261 mutex_lock(&u132_module_lock);
262 list_del_init(&u132->u132_list);
263 u132_instances -= 1;
264 mutex_unlock(&u132_module_lock);
265 dev_warn(&u132->platform_dev->dev, "FREEING the hcd=%p and thus the u13"
266 "2=%p going=%d pdev=%p\n", hcd, u132, u132->going, pdev);
267 usb_put_hcd(hcd);
268 }
269
270 static inline void u132_u132_put_kref(struct u132 *u132)
271 {
272 kref_put(&u132->kref, u132_hcd_delete);
273 }
274
275 static inline void u132_u132_init_kref(struct u132 *u132)
276 {
277 kref_init(&u132->kref);
278 }
279
280 static void u132_udev_delete(struct kref *kref)
281 {
282 struct u132_udev *udev = kref_to_u132_udev(kref);
283 udev->udev_number = 0;
284 udev->usb_device = NULL;
285 udev->usb_addr = 0;
286 udev->enumeration = 0;
287 }
288
289 static inline void u132_udev_put_kref(struct u132 *u132, struct u132_udev *udev)
290 {
291 kref_put(&udev->kref, u132_udev_delete);
292 }
293
294 static inline void u132_udev_get_kref(struct u132 *u132, struct u132_udev *udev)
295 {
296 kref_get(&udev->kref);
297 }
298
299 static inline void u132_udev_init_kref(struct u132 *u132,
300 struct u132_udev *udev)
301 {
302 kref_init(&udev->kref);
303 }
304
305 static inline void u132_ring_put_kref(struct u132 *u132, struct u132_ring *ring)
306 {
307 kref_put(&u132->kref, u132_hcd_delete);
308 }
309
310 static void u132_ring_requeue_work(struct u132 *u132, struct u132_ring *ring,
311 unsigned int delta)
312 {
313 if (delta > 0) {
314 if (queue_delayed_work(workqueue, &ring->scheduler, delta))
315 return;
316 } else if (queue_delayed_work(workqueue, &ring->scheduler, 0))
317 return;
318 kref_put(&u132->kref, u132_hcd_delete);
319 return;
320 }
321
322 static void u132_ring_queue_work(struct u132 *u132, struct u132_ring *ring,
323 unsigned int delta)
324 {
325 kref_get(&u132->kref);
326 u132_ring_requeue_work(u132, ring, delta);
327 return;
328 }
329
330 static void u132_ring_cancel_work(struct u132 *u132, struct u132_ring *ring)
331 {
332 if (cancel_delayed_work(&ring->scheduler)) {
333 kref_put(&u132->kref, u132_hcd_delete);
334 }
335 }
336
337 static void u132_endp_delete(struct kref *kref)
338 {
339 struct u132_endp *endp = kref_to_u132_endp(kref);
340 struct u132 *u132 = endp->u132;
341 u8 usb_addr = endp->usb_addr;
342 u8 usb_endp = endp->usb_endp;
343 u8 address = u132->addr[usb_addr].address;
344 struct u132_udev *udev = &u132->udev[address];
345 u8 endp_number = endp->endp_number;
346 struct usb_host_endpoint *hep = endp->hep;
347 struct u132_ring *ring = endp->ring;
348 struct list_head *head = &endp->endp_ring;
349 ring->length -= 1;
350 if (endp == ring->curr_endp) {
351 if (list_empty(head)) {
352 ring->curr_endp = NULL;
353 list_del(head);
354 } else {
355 struct u132_endp *next_endp = list_entry(head->next,
356 struct u132_endp, endp_ring);
357 ring->curr_endp = next_endp;
358 list_del(head);
359 }} else
360 list_del(head);
361 if (endp->input) {
362 udev->endp_number_in[usb_endp] = 0;
363 u132_udev_put_kref(u132, udev);
364 }
365 if (endp->output) {
366 udev->endp_number_out[usb_endp] = 0;
367 u132_udev_put_kref(u132, udev);
368 }
369 u132->endp[endp_number - 1] = NULL;
370 hep->hcpriv = NULL;
371 kfree(endp);
372 u132_u132_put_kref(u132);
373 }
374
375 static inline void u132_endp_put_kref(struct u132 *u132, struct u132_endp *endp)
376 {
377 kref_put(&endp->kref, u132_endp_delete);
378 }
379
380 static inline void u132_endp_get_kref(struct u132 *u132, struct u132_endp *endp)
381 {
382 kref_get(&endp->kref);
383 }
384
385 static inline void u132_endp_init_kref(struct u132 *u132,
386 struct u132_endp *endp)
387 {
388 kref_init(&endp->kref);
389 kref_get(&u132->kref);
390 }
391
392 static void u132_endp_queue_work(struct u132 *u132, struct u132_endp *endp,
393 unsigned int delta)
394 {
395 if (queue_delayed_work(workqueue, &endp->scheduler, delta))
396 kref_get(&endp->kref);
397 }
398
399 static void u132_endp_cancel_work(struct u132 *u132, struct u132_endp *endp)
400 {
401 if (cancel_delayed_work(&endp->scheduler))
402 kref_put(&endp->kref, u132_endp_delete);
403 }
404
405 static inline void u132_monitor_put_kref(struct u132 *u132)
406 {
407 kref_put(&u132->kref, u132_hcd_delete);
408 }
409
410 static void u132_monitor_queue_work(struct u132 *u132, unsigned int delta)
411 {
412 if (queue_delayed_work(workqueue, &u132->monitor, delta))
413 kref_get(&u132->kref);
414 }
415
416 static void u132_monitor_requeue_work(struct u132 *u132, unsigned int delta)
417 {
418 if (!queue_delayed_work(workqueue, &u132->monitor, delta))
419 kref_put(&u132->kref, u132_hcd_delete);
420 }
421
422 static void u132_monitor_cancel_work(struct u132 *u132)
423 {
424 if (cancel_delayed_work(&u132->monitor))
425 kref_put(&u132->kref, u132_hcd_delete);
426 }
427
428 static int read_roothub_info(struct u132 *u132)
429 {
430 u32 revision;
431 int retval;
432 retval = u132_read_pcimem(u132, revision, &revision);
433 if (retval) {
434 dev_err(&u132->platform_dev->dev, "error %d accessing device co"
435 "ntrol\n", retval);
436 return retval;
437 } else if ((revision & 0xFF) == 0x10) {
438 } else if ((revision & 0xFF) == 0x11) {
439 } else {
440 dev_err(&u132->platform_dev->dev, "device revision is not valid"
441 " %08X\n", revision);
442 return -ENODEV;
443 }
444 retval = u132_read_pcimem(u132, control, &u132->hc_control);
445 if (retval) {
446 dev_err(&u132->platform_dev->dev, "error %d accessing device co"
447 "ntrol\n", retval);
448 return retval;
449 }
450 retval = u132_read_pcimem(u132, roothub.status,
451 &u132->hc_roothub_status);
452 if (retval) {
453 dev_err(&u132->platform_dev->dev, "error %d accessing device re"
454 "g roothub.status\n", retval);
455 return retval;
456 }
457 retval = u132_read_pcimem(u132, roothub.a, &u132->hc_roothub_a);
458 if (retval) {
459 dev_err(&u132->platform_dev->dev, "error %d accessing device re"
460 "g roothub.a\n", retval);
461 return retval;
462 }
463 {
464 int I = u132->num_ports;
465 int i = 0;
466 while (I-- > 0) {
467 retval = u132_read_pcimem(u132, roothub.portstatus[i],
468 &u132->hc_roothub_portstatus[i]);
469 if (retval) {
470 dev_err(&u132->platform_dev->dev, "error %d acc"
471 "essing device roothub.portstatus[%d]\n"
472 , retval, i);
473 return retval;
474 } else
475 i += 1;
476 }
477 }
478 return 0;
479 }
480
481 static void u132_hcd_monitor_work(struct work_struct *work)
482 {
483 struct u132 *u132 = container_of(work, struct u132, monitor.work);
484 if (u132->going > 1) {
485 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
486 , u132->going);
487 u132_monitor_put_kref(u132);
488 return;
489 } else if (u132->going > 0) {
490 dev_err(&u132->platform_dev->dev, "device is being removed\n");
491 u132_monitor_put_kref(u132);
492 return;
493 } else {
494 int retval;
495 mutex_lock(&u132->sw_lock);
496 retval = read_roothub_info(u132);
497 if (retval) {
498 struct usb_hcd *hcd = u132_to_hcd(u132);
499 u132_disable(u132);
500 u132->going = 1;
501 mutex_unlock(&u132->sw_lock);
502 usb_hc_died(hcd);
503 ftdi_elan_gone_away(u132->platform_dev);
504 u132_monitor_put_kref(u132);
505 return;
506 } else {
507 u132_monitor_requeue_work(u132, 500);
508 mutex_unlock(&u132->sw_lock);
509 return;
510 }
511 }
512 }
513
514 static void u132_hcd_giveback_urb(struct u132 *u132, struct u132_endp *endp,
515 struct urb *urb, int status)
516 {
517 struct u132_ring *ring;
518 unsigned long irqs;
519 struct usb_hcd *hcd = u132_to_hcd(u132);
520 urb->error_count = 0;
521 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
522 usb_hcd_unlink_urb_from_ep(hcd, urb);
523 endp->queue_next += 1;
524 if (ENDP_QUEUE_SIZE > --endp->queue_size) {
525 endp->active = 0;
526 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
527 } else {
528 struct list_head *next = endp->urb_more.next;
529 struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
530 urb_more);
531 list_del(next);
532 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
533 urbq->urb;
534 endp->active = 0;
535 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
536 kfree(urbq);
537 } down(&u132->scheduler_lock);
538 ring = endp->ring;
539 ring->in_use = 0;
540 u132_ring_cancel_work(u132, ring);
541 u132_ring_queue_work(u132, ring, 0);
542 up(&u132->scheduler_lock);
543 u132_endp_put_kref(u132, endp);
544 usb_hcd_giveback_urb(hcd, urb, status);
545 return;
546 }
547
548 static void u132_hcd_forget_urb(struct u132 *u132, struct u132_endp *endp,
549 struct urb *urb, int status)
550 {
551 u132_endp_put_kref(u132, endp);
552 }
553
554 static void u132_hcd_abandon_urb(struct u132 *u132, struct u132_endp *endp,
555 struct urb *urb, int status)
556 {
557 unsigned long irqs;
558 struct usb_hcd *hcd = u132_to_hcd(u132);
559 urb->error_count = 0;
560 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
561 usb_hcd_unlink_urb_from_ep(hcd, urb);
562 endp->queue_next += 1;
563 if (ENDP_QUEUE_SIZE > --endp->queue_size) {
564 endp->active = 0;
565 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
566 } else {
567 struct list_head *next = endp->urb_more.next;
568 struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
569 urb_more);
570 list_del(next);
571 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
572 urbq->urb;
573 endp->active = 0;
574 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
575 kfree(urbq);
576 } usb_hcd_giveback_urb(hcd, urb, status);
577 return;
578 }
579
580 static inline int edset_input(struct u132 *u132, struct u132_ring *ring,
581 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
582 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
583 int toggle_bits, int error_count, int condition_code, int repeat_number,
584 int halted, int skipped, int actual, int non_null))
585 {
586 return usb_ftdi_elan_edset_input(u132->platform_dev, ring->number, endp,
587 urb, address, endp->usb_endp, toggle_bits, callback);
588 }
589
590 static inline int edset_setup(struct u132 *u132, struct u132_ring *ring,
591 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
592 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
593 int toggle_bits, int error_count, int condition_code, int repeat_number,
594 int halted, int skipped, int actual, int non_null))
595 {
596 return usb_ftdi_elan_edset_setup(u132->platform_dev, ring->number, endp,
597 urb, address, endp->usb_endp, toggle_bits, callback);
598 }
599
600 static inline int edset_single(struct u132 *u132, struct u132_ring *ring,
601 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
602 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
603 int toggle_bits, int error_count, int condition_code, int repeat_number,
604 int halted, int skipped, int actual, int non_null))
605 {
606 return usb_ftdi_elan_edset_single(u132->platform_dev, ring->number,
607 endp, urb, address, endp->usb_endp, toggle_bits, callback);
608 }
609
610 static inline int edset_output(struct u132 *u132, struct u132_ring *ring,
611 struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
612 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
613 int toggle_bits, int error_count, int condition_code, int repeat_number,
614 int halted, int skipped, int actual, int non_null))
615 {
616 return usb_ftdi_elan_edset_output(u132->platform_dev, ring->number,
617 endp, urb, address, endp->usb_endp, toggle_bits, callback);
618 }
619
620
621 /*
622 * must not LOCK sw_lock
623 *
624 */
625 static void u132_hcd_interrupt_recv(void *data, struct urb *urb, u8 *buf,
626 int len, int toggle_bits, int error_count, int condition_code,
627 int repeat_number, int halted, int skipped, int actual, int non_null)
628 {
629 struct u132_endp *endp = data;
630 struct u132 *u132 = endp->u132;
631 u8 address = u132->addr[endp->usb_addr].address;
632 struct u132_udev *udev = &u132->udev[address];
633 down(&u132->scheduler_lock);
634 if (u132->going > 1) {
635 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
636 , u132->going);
637 up(&u132->scheduler_lock);
638 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
639 return;
640 } else if (endp->dequeueing) {
641 endp->dequeueing = 0;
642 up(&u132->scheduler_lock);
643 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
644 return;
645 } else if (u132->going > 0) {
646 dev_err(&u132->platform_dev->dev, "device is being removed "
647 "urb=%p\n", urb);
648 up(&u132->scheduler_lock);
649 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
650 return;
651 } else if (!urb->unlinked) {
652 struct u132_ring *ring = endp->ring;
653 u8 *u = urb->transfer_buffer + urb->actual_length;
654 u8 *b = buf;
655 int L = len;
656 while (L-- > 0) {
657 *u++ = *b++;
658 }
659 urb->actual_length += len;
660 if ((condition_code == TD_CC_NOERROR) &&
661 (urb->transfer_buffer_length > urb->actual_length)) {
662 endp->toggle_bits = toggle_bits;
663 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
664 1 & toggle_bits);
665 if (urb->actual_length > 0) {
666 int retval;
667 up(&u132->scheduler_lock);
668 retval = edset_single(u132, ring, endp, urb,
669 address, endp->toggle_bits,
670 u132_hcd_interrupt_recv);
671 if (retval == 0) {
672 } else
673 u132_hcd_giveback_urb(u132, endp, urb,
674 retval);
675 } else {
676 ring->in_use = 0;
677 endp->active = 0;
678 endp->jiffies = jiffies +
679 msecs_to_jiffies(urb->interval);
680 u132_ring_cancel_work(u132, ring);
681 u132_ring_queue_work(u132, ring, 0);
682 up(&u132->scheduler_lock);
683 u132_endp_put_kref(u132, endp);
684 }
685 return;
686 } else if ((condition_code == TD_DATAUNDERRUN) &&
687 ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
688 endp->toggle_bits = toggle_bits;
689 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
690 1 & toggle_bits);
691 up(&u132->scheduler_lock);
692 u132_hcd_giveback_urb(u132, endp, urb, 0);
693 return;
694 } else {
695 if (condition_code == TD_CC_NOERROR) {
696 endp->toggle_bits = toggle_bits;
697 usb_settoggle(udev->usb_device, endp->usb_endp,
698 0, 1 & toggle_bits);
699 } else if (condition_code == TD_CC_STALL) {
700 endp->toggle_bits = 0x2;
701 usb_settoggle(udev->usb_device, endp->usb_endp,
702 0, 0);
703 } else {
704 endp->toggle_bits = 0x2;
705 usb_settoggle(udev->usb_device, endp->usb_endp,
706 0, 0);
707 dev_err(&u132->platform_dev->dev, "urb=%p givin"
708 "g back INTERRUPT %s\n", urb,
709 cc_to_text[condition_code]);
710 }
711 up(&u132->scheduler_lock);
712 u132_hcd_giveback_urb(u132, endp, urb,
713 cc_to_error[condition_code]);
714 return;
715 }
716 } else {
717 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
718 "unlinked=%d\n", urb, urb->unlinked);
719 up(&u132->scheduler_lock);
720 u132_hcd_giveback_urb(u132, endp, urb, 0);
721 return;
722 }
723 }
724
725 static void u132_hcd_bulk_output_sent(void *data, struct urb *urb, u8 *buf,
726 int len, int toggle_bits, int error_count, int condition_code,
727 int repeat_number, int halted, int skipped, int actual, int non_null)
728 {
729 struct u132_endp *endp = data;
730 struct u132 *u132 = endp->u132;
731 u8 address = u132->addr[endp->usb_addr].address;
732 down(&u132->scheduler_lock);
733 if (u132->going > 1) {
734 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
735 , u132->going);
736 up(&u132->scheduler_lock);
737 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
738 return;
739 } else if (endp->dequeueing) {
740 endp->dequeueing = 0;
741 up(&u132->scheduler_lock);
742 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
743 return;
744 } else if (u132->going > 0) {
745 dev_err(&u132->platform_dev->dev, "device is being removed "
746 "urb=%p\n", urb);
747 up(&u132->scheduler_lock);
748 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
749 return;
750 } else if (!urb->unlinked) {
751 struct u132_ring *ring = endp->ring;
752 urb->actual_length += len;
753 endp->toggle_bits = toggle_bits;
754 if (urb->transfer_buffer_length > urb->actual_length) {
755 int retval;
756 up(&u132->scheduler_lock);
757 retval = edset_output(u132, ring, endp, urb, address,
758 endp->toggle_bits, u132_hcd_bulk_output_sent);
759 if (retval == 0) {
760 } else
761 u132_hcd_giveback_urb(u132, endp, urb, retval);
762 return;
763 } else {
764 up(&u132->scheduler_lock);
765 u132_hcd_giveback_urb(u132, endp, urb, 0);
766 return;
767 }
768 } else {
769 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
770 "unlinked=%d\n", urb, urb->unlinked);
771 up(&u132->scheduler_lock);
772 u132_hcd_giveback_urb(u132, endp, urb, 0);
773 return;
774 }
775 }
776
777 static void u132_hcd_bulk_input_recv(void *data, struct urb *urb, u8 *buf,
778 int len, int toggle_bits, int error_count, int condition_code,
779 int repeat_number, int halted, int skipped, int actual, int non_null)
780 {
781 struct u132_endp *endp = data;
782 struct u132 *u132 = endp->u132;
783 u8 address = u132->addr[endp->usb_addr].address;
784 struct u132_udev *udev = &u132->udev[address];
785 down(&u132->scheduler_lock);
786 if (u132->going > 1) {
787 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
788 , u132->going);
789 up(&u132->scheduler_lock);
790 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
791 return;
792 } else if (endp->dequeueing) {
793 endp->dequeueing = 0;
794 up(&u132->scheduler_lock);
795 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
796 return;
797 } else if (u132->going > 0) {
798 dev_err(&u132->platform_dev->dev, "device is being removed "
799 "urb=%p\n", urb);
800 up(&u132->scheduler_lock);
801 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
802 return;
803 } else if (!urb->unlinked) {
804 struct u132_ring *ring = endp->ring;
805 u8 *u = urb->transfer_buffer + urb->actual_length;
806 u8 *b = buf;
807 int L = len;
808 while (L-- > 0) {
809 *u++ = *b++;
810 }
811 urb->actual_length += len;
812 if ((condition_code == TD_CC_NOERROR) &&
813 (urb->transfer_buffer_length > urb->actual_length)) {
814 int retval;
815 endp->toggle_bits = toggle_bits;
816 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
817 1 & toggle_bits);
818 up(&u132->scheduler_lock);
819 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
820 ring->number, endp, urb, address,
821 endp->usb_endp, endp->toggle_bits,
822 u132_hcd_bulk_input_recv);
823 if (retval == 0) {
824 } else
825 u132_hcd_giveback_urb(u132, endp, urb, retval);
826 return;
827 } else if (condition_code == TD_CC_NOERROR) {
828 endp->toggle_bits = toggle_bits;
829 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
830 1 & toggle_bits);
831 up(&u132->scheduler_lock);
832 u132_hcd_giveback_urb(u132, endp, urb,
833 cc_to_error[condition_code]);
834 return;
835 } else if ((condition_code == TD_DATAUNDERRUN) &&
836 ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
837 endp->toggle_bits = toggle_bits;
838 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
839 1 & toggle_bits);
840 up(&u132->scheduler_lock);
841 u132_hcd_giveback_urb(u132, endp, urb, 0);
842 return;
843 } else if (condition_code == TD_DATAUNDERRUN) {
844 endp->toggle_bits = toggle_bits;
845 usb_settoggle(udev->usb_device, endp->usb_endp, 0,
846 1 & toggle_bits);
847 dev_warn(&u132->platform_dev->dev, "urb=%p(SHORT NOT OK"
848 ") giving back BULK IN %s\n", urb,
849 cc_to_text[condition_code]);
850 up(&u132->scheduler_lock);
851 u132_hcd_giveback_urb(u132, endp, urb, 0);
852 return;
853 } else if (condition_code == TD_CC_STALL) {
854 endp->toggle_bits = 0x2;
855 usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
856 up(&u132->scheduler_lock);
857 u132_hcd_giveback_urb(u132, endp, urb,
858 cc_to_error[condition_code]);
859 return;
860 } else {
861 endp->toggle_bits = 0x2;
862 usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
863 dev_err(&u132->platform_dev->dev, "urb=%p giving back B"
864 "ULK IN code=%d %s\n", urb, condition_code,
865 cc_to_text[condition_code]);
866 up(&u132->scheduler_lock);
867 u132_hcd_giveback_urb(u132, endp, urb,
868 cc_to_error[condition_code]);
869 return;
870 }
871 } else {
872 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
873 "unlinked=%d\n", urb, urb->unlinked);
874 up(&u132->scheduler_lock);
875 u132_hcd_giveback_urb(u132, endp, urb, 0);
876 return;
877 }
878 }
879
880 static void u132_hcd_configure_empty_sent(void *data, struct urb *urb, u8 *buf,
881 int len, int toggle_bits, int error_count, int condition_code,
882 int repeat_number, int halted, int skipped, int actual, int non_null)
883 {
884 struct u132_endp *endp = data;
885 struct u132 *u132 = endp->u132;
886 down(&u132->scheduler_lock);
887 if (u132->going > 1) {
888 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
889 , u132->going);
890 up(&u132->scheduler_lock);
891 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
892 return;
893 } else if (endp->dequeueing) {
894 endp->dequeueing = 0;
895 up(&u132->scheduler_lock);
896 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
897 return;
898 } else if (u132->going > 0) {
899 dev_err(&u132->platform_dev->dev, "device is being removed "
900 "urb=%p\n", urb);
901 up(&u132->scheduler_lock);
902 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
903 return;
904 } else if (!urb->unlinked) {
905 up(&u132->scheduler_lock);
906 u132_hcd_giveback_urb(u132, endp, urb, 0);
907 return;
908 } else {
909 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
910 "unlinked=%d\n", urb, urb->unlinked);
911 up(&u132->scheduler_lock);
912 u132_hcd_giveback_urb(u132, endp, urb, 0);
913 return;
914 }
915 }
916
917 static void u132_hcd_configure_input_recv(void *data, struct urb *urb, u8 *buf,
918 int len, int toggle_bits, int error_count, int condition_code,
919 int repeat_number, int halted, int skipped, int actual, int non_null)
920 {
921 struct u132_endp *endp = data;
922 struct u132 *u132 = endp->u132;
923 u8 address = u132->addr[endp->usb_addr].address;
924 down(&u132->scheduler_lock);
925 if (u132->going > 1) {
926 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
927 , u132->going);
928 up(&u132->scheduler_lock);
929 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
930 return;
931 } else if (endp->dequeueing) {
932 endp->dequeueing = 0;
933 up(&u132->scheduler_lock);
934 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
935 return;
936 } else if (u132->going > 0) {
937 dev_err(&u132->platform_dev->dev, "device is being removed "
938 "urb=%p\n", urb);
939 up(&u132->scheduler_lock);
940 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
941 return;
942 } else if (!urb->unlinked) {
943 struct u132_ring *ring = endp->ring;
944 u8 *u = urb->transfer_buffer;
945 u8 *b = buf;
946 int L = len;
947 while (L-- > 0) {
948 *u++ = *b++;
949 }
950 urb->actual_length = len;
951 if ((condition_code == TD_CC_NOERROR) || ((condition_code ==
952 TD_DATAUNDERRUN) && ((urb->transfer_flags &
953 URB_SHORT_NOT_OK) == 0))) {
954 int retval;
955 up(&u132->scheduler_lock);
956 retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
957 ring->number, endp, urb, address,
958 endp->usb_endp, 0x3,
959 u132_hcd_configure_empty_sent);
960 if (retval == 0) {
961 } else
962 u132_hcd_giveback_urb(u132, endp, urb, retval);
963 return;
964 } else if (condition_code == TD_CC_STALL) {
965 up(&u132->scheduler_lock);
966 dev_warn(&u132->platform_dev->dev, "giving back SETUP I"
967 "NPUT STALL urb %p\n", urb);
968 u132_hcd_giveback_urb(u132, endp, urb,
969 cc_to_error[condition_code]);
970 return;
971 } else {
972 up(&u132->scheduler_lock);
973 dev_err(&u132->platform_dev->dev, "giving back SETUP IN"
974 "PUT %s urb %p\n", cc_to_text[condition_code],
975 urb);
976 u132_hcd_giveback_urb(u132, endp, urb,
977 cc_to_error[condition_code]);
978 return;
979 }
980 } else {
981 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
982 "unlinked=%d\n", urb, urb->unlinked);
983 up(&u132->scheduler_lock);
984 u132_hcd_giveback_urb(u132, endp, urb, 0);
985 return;
986 }
987 }
988
989 static void u132_hcd_configure_empty_recv(void *data, struct urb *urb, u8 *buf,
990 int len, int toggle_bits, int error_count, int condition_code,
991 int repeat_number, int halted, int skipped, int actual, int non_null)
992 {
993 struct u132_endp *endp = data;
994 struct u132 *u132 = endp->u132;
995 down(&u132->scheduler_lock);
996 if (u132->going > 1) {
997 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
998 , u132->going);
999 up(&u132->scheduler_lock);
1000 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1001 return;
1002 } else if (endp->dequeueing) {
1003 endp->dequeueing = 0;
1004 up(&u132->scheduler_lock);
1005 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1006 return;
1007 } else if (u132->going > 0) {
1008 dev_err(&u132->platform_dev->dev, "device is being removed "
1009 "urb=%p\n", urb);
1010 up(&u132->scheduler_lock);
1011 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1012 return;
1013 } else if (!urb->unlinked) {
1014 up(&u132->scheduler_lock);
1015 u132_hcd_giveback_urb(u132, endp, urb, 0);
1016 return;
1017 } else {
1018 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1019 "unlinked=%d\n", urb, urb->unlinked);
1020 up(&u132->scheduler_lock);
1021 u132_hcd_giveback_urb(u132, endp, urb, 0);
1022 return;
1023 }
1024 }
1025
1026 static void u132_hcd_configure_setup_sent(void *data, struct urb *urb, u8 *buf,
1027 int len, int toggle_bits, int error_count, int condition_code,
1028 int repeat_number, int halted, int skipped, int actual, int non_null)
1029 {
1030 struct u132_endp *endp = data;
1031 struct u132 *u132 = endp->u132;
1032 u8 address = u132->addr[endp->usb_addr].address;
1033 down(&u132->scheduler_lock);
1034 if (u132->going > 1) {
1035 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1036 , u132->going);
1037 up(&u132->scheduler_lock);
1038 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1039 return;
1040 } else if (endp->dequeueing) {
1041 endp->dequeueing = 0;
1042 up(&u132->scheduler_lock);
1043 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1044 return;
1045 } else if (u132->going > 0) {
1046 dev_err(&u132->platform_dev->dev, "device is being removed "
1047 "urb=%p\n", urb);
1048 up(&u132->scheduler_lock);
1049 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1050 return;
1051 } else if (!urb->unlinked) {
1052 if (usb_pipein(urb->pipe)) {
1053 int retval;
1054 struct u132_ring *ring = endp->ring;
1055 up(&u132->scheduler_lock);
1056 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1057 ring->number, endp, urb, address,
1058 endp->usb_endp, 0,
1059 u132_hcd_configure_input_recv);
1060 if (retval == 0) {
1061 } else
1062 u132_hcd_giveback_urb(u132, endp, urb, retval);
1063 return;
1064 } else {
1065 int retval;
1066 struct u132_ring *ring = endp->ring;
1067 up(&u132->scheduler_lock);
1068 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1069 ring->number, endp, urb, address,
1070 endp->usb_endp, 0,
1071 u132_hcd_configure_empty_recv);
1072 if (retval == 0) {
1073 } else
1074 u132_hcd_giveback_urb(u132, endp, urb, retval);
1075 return;
1076 }
1077 } else {
1078 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1079 "unlinked=%d\n", urb, urb->unlinked);
1080 up(&u132->scheduler_lock);
1081 u132_hcd_giveback_urb(u132, endp, urb, 0);
1082 return;
1083 }
1084 }
1085
1086 static void u132_hcd_enumeration_empty_recv(void *data, struct urb *urb,
1087 u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
1088 int repeat_number, int halted, int skipped, int actual, int non_null)
1089 {
1090 struct u132_endp *endp = data;
1091 struct u132 *u132 = endp->u132;
1092 u8 address = u132->addr[endp->usb_addr].address;
1093 struct u132_udev *udev = &u132->udev[address];
1094 down(&u132->scheduler_lock);
1095 if (u132->going > 1) {
1096 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1097 , u132->going);
1098 up(&u132->scheduler_lock);
1099 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1100 return;
1101 } else if (endp->dequeueing) {
1102 endp->dequeueing = 0;
1103 up(&u132->scheduler_lock);
1104 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1105 return;
1106 } else if (u132->going > 0) {
1107 dev_err(&u132->platform_dev->dev, "device is being removed "
1108 "urb=%p\n", urb);
1109 up(&u132->scheduler_lock);
1110 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1111 return;
1112 } else if (!urb->unlinked) {
1113 u132->addr[0].address = 0;
1114 endp->usb_addr = udev->usb_addr;
1115 up(&u132->scheduler_lock);
1116 u132_hcd_giveback_urb(u132, endp, urb, 0);
1117 return;
1118 } else {
1119 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1120 "unlinked=%d\n", urb, urb->unlinked);
1121 up(&u132->scheduler_lock);
1122 u132_hcd_giveback_urb(u132, endp, urb, 0);
1123 return;
1124 }
1125 }
1126
1127 static void u132_hcd_enumeration_address_sent(void *data, struct urb *urb,
1128 u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
1129 int repeat_number, int halted, int skipped, int actual, int non_null)
1130 {
1131 struct u132_endp *endp = data;
1132 struct u132 *u132 = endp->u132;
1133 down(&u132->scheduler_lock);
1134 if (u132->going > 1) {
1135 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1136 , u132->going);
1137 up(&u132->scheduler_lock);
1138 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1139 return;
1140 } else if (endp->dequeueing) {
1141 endp->dequeueing = 0;
1142 up(&u132->scheduler_lock);
1143 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1144 return;
1145 } else if (u132->going > 0) {
1146 dev_err(&u132->platform_dev->dev, "device is being removed "
1147 "urb=%p\n", urb);
1148 up(&u132->scheduler_lock);
1149 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1150 return;
1151 } else if (!urb->unlinked) {
1152 int retval;
1153 struct u132_ring *ring = endp->ring;
1154 up(&u132->scheduler_lock);
1155 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1156 ring->number, endp, urb, 0, endp->usb_endp, 0,
1157 u132_hcd_enumeration_empty_recv);
1158 if (retval == 0) {
1159 } else
1160 u132_hcd_giveback_urb(u132, endp, urb, retval);
1161 return;
1162 } else {
1163 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1164 "unlinked=%d\n", urb, urb->unlinked);
1165 up(&u132->scheduler_lock);
1166 u132_hcd_giveback_urb(u132, endp, urb, 0);
1167 return;
1168 }
1169 }
1170
1171 static void u132_hcd_initial_empty_sent(void *data, struct urb *urb, u8 *buf,
1172 int len, int toggle_bits, int error_count, int condition_code,
1173 int repeat_number, int halted, int skipped, int actual, int non_null)
1174 {
1175 struct u132_endp *endp = data;
1176 struct u132 *u132 = endp->u132;
1177 down(&u132->scheduler_lock);
1178 if (u132->going > 1) {
1179 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1180 , u132->going);
1181 up(&u132->scheduler_lock);
1182 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1183 return;
1184 } else if (endp->dequeueing) {
1185 endp->dequeueing = 0;
1186 up(&u132->scheduler_lock);
1187 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1188 return;
1189 } else if (u132->going > 0) {
1190 dev_err(&u132->platform_dev->dev, "device is being removed "
1191 "urb=%p\n", urb);
1192 up(&u132->scheduler_lock);
1193 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1194 return;
1195 } else if (!urb->unlinked) {
1196 up(&u132->scheduler_lock);
1197 u132_hcd_giveback_urb(u132, endp, urb, 0);
1198 return;
1199 } else {
1200 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1201 "unlinked=%d\n", urb, urb->unlinked);
1202 up(&u132->scheduler_lock);
1203 u132_hcd_giveback_urb(u132, endp, urb, 0);
1204 return;
1205 }
1206 }
1207
1208 static void u132_hcd_initial_input_recv(void *data, struct urb *urb, u8 *buf,
1209 int len, int toggle_bits, int error_count, int condition_code,
1210 int repeat_number, int halted, int skipped, int actual, int non_null)
1211 {
1212 struct u132_endp *endp = data;
1213 struct u132 *u132 = endp->u132;
1214 u8 address = u132->addr[endp->usb_addr].address;
1215 down(&u132->scheduler_lock);
1216 if (u132->going > 1) {
1217 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1218 , u132->going);
1219 up(&u132->scheduler_lock);
1220 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1221 return;
1222 } else if (endp->dequeueing) {
1223 endp->dequeueing = 0;
1224 up(&u132->scheduler_lock);
1225 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1226 return;
1227 } else if (u132->going > 0) {
1228 dev_err(&u132->platform_dev->dev, "device is being removed "
1229 "urb=%p\n", urb);
1230 up(&u132->scheduler_lock);
1231 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1232 return;
1233 } else if (!urb->unlinked) {
1234 int retval;
1235 struct u132_ring *ring = endp->ring;
1236 u8 *u = urb->transfer_buffer;
1237 u8 *b = buf;
1238 int L = len;
1239 while (L-- > 0) {
1240 *u++ = *b++;
1241 }
1242 urb->actual_length = len;
1243 up(&u132->scheduler_lock);
1244 retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
1245 ring->number, endp, urb, address, endp->usb_endp, 0x3,
1246 u132_hcd_initial_empty_sent);
1247 if (retval == 0) {
1248 } else
1249 u132_hcd_giveback_urb(u132, endp, urb, retval);
1250 return;
1251 } else {
1252 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1253 "unlinked=%d\n", urb, urb->unlinked);
1254 up(&u132->scheduler_lock);
1255 u132_hcd_giveback_urb(u132, endp, urb, 0);
1256 return;
1257 }
1258 }
1259
1260 static void u132_hcd_initial_setup_sent(void *data, struct urb *urb, u8 *buf,
1261 int len, int toggle_bits, int error_count, int condition_code,
1262 int repeat_number, int halted, int skipped, int actual, int non_null)
1263 {
1264 struct u132_endp *endp = data;
1265 struct u132 *u132 = endp->u132;
1266 u8 address = u132->addr[endp->usb_addr].address;
1267 down(&u132->scheduler_lock);
1268 if (u132->going > 1) {
1269 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1270 , u132->going);
1271 up(&u132->scheduler_lock);
1272 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1273 return;
1274 } else if (endp->dequeueing) {
1275 endp->dequeueing = 0;
1276 up(&u132->scheduler_lock);
1277 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1278 return;
1279 } else if (u132->going > 0) {
1280 dev_err(&u132->platform_dev->dev, "device is being removed "
1281 "urb=%p\n", urb);
1282 up(&u132->scheduler_lock);
1283 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1284 return;
1285 } else if (!urb->unlinked) {
1286 int retval;
1287 struct u132_ring *ring = endp->ring;
1288 up(&u132->scheduler_lock);
1289 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1290 ring->number, endp, urb, address, endp->usb_endp, 0,
1291 u132_hcd_initial_input_recv);
1292 if (retval == 0) {
1293 } else
1294 u132_hcd_giveback_urb(u132, endp, urb, retval);
1295 return;
1296 } else {
1297 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1298 "unlinked=%d\n", urb, urb->unlinked);
1299 up(&u132->scheduler_lock);
1300 u132_hcd_giveback_urb(u132, endp, urb, 0);
1301 return;
1302 }
1303 }
1304
1305 /*
1306 * this work function is only executed from the work queue
1307 *
1308 */
1309 static void u132_hcd_ring_work_scheduler(struct work_struct *work)
1310 {
1311 struct u132_ring *ring =
1312 container_of(work, struct u132_ring, scheduler.work);
1313 struct u132 *u132 = ring->u132;
1314 down(&u132->scheduler_lock);
1315 if (ring->in_use) {
1316 up(&u132->scheduler_lock);
1317 u132_ring_put_kref(u132, ring);
1318 return;
1319 } else if (ring->curr_endp) {
1320 struct u132_endp *last_endp = ring->curr_endp;
1321 struct list_head *scan;
1322 struct list_head *head = &last_endp->endp_ring;
1323 unsigned long wakeup = 0;
1324 list_for_each(scan, head) {
1325 struct u132_endp *endp = list_entry(scan,
1326 struct u132_endp, endp_ring);
1327 if (endp->queue_next == endp->queue_last) {
1328 } else if ((endp->delayed == 0)
1329 || time_after_eq(jiffies, endp->jiffies)) {
1330 ring->curr_endp = endp;
1331 u132_endp_cancel_work(u132, last_endp);
1332 u132_endp_queue_work(u132, last_endp, 0);
1333 up(&u132->scheduler_lock);
1334 u132_ring_put_kref(u132, ring);
1335 return;
1336 } else {
1337 unsigned long delta = endp->jiffies - jiffies;
1338 if (delta > wakeup)
1339 wakeup = delta;
1340 }
1341 }
1342 if (last_endp->queue_next == last_endp->queue_last) {
1343 } else if ((last_endp->delayed == 0) || time_after_eq(jiffies,
1344 last_endp->jiffies)) {
1345 u132_endp_cancel_work(u132, last_endp);
1346 u132_endp_queue_work(u132, last_endp, 0);
1347 up(&u132->scheduler_lock);
1348 u132_ring_put_kref(u132, ring);
1349 return;
1350 } else {
1351 unsigned long delta = last_endp->jiffies - jiffies;
1352 if (delta > wakeup)
1353 wakeup = delta;
1354 }
1355 if (wakeup > 0) {
1356 u132_ring_requeue_work(u132, ring, wakeup);
1357 up(&u132->scheduler_lock);
1358 return;
1359 } else {
1360 up(&u132->scheduler_lock);
1361 u132_ring_put_kref(u132, ring);
1362 return;
1363 }
1364 } else {
1365 up(&u132->scheduler_lock);
1366 u132_ring_put_kref(u132, ring);
1367 return;
1368 }
1369 }
1370
1371 static void u132_hcd_endp_work_scheduler(struct work_struct *work)
1372 {
1373 struct u132_ring *ring;
1374 struct u132_endp *endp =
1375 container_of(work, struct u132_endp, scheduler.work);
1376 struct u132 *u132 = endp->u132;
1377 down(&u132->scheduler_lock);
1378 ring = endp->ring;
1379 if (endp->edset_flush) {
1380 endp->edset_flush = 0;
1381 if (endp->dequeueing)
1382 usb_ftdi_elan_edset_flush(u132->platform_dev,
1383 ring->number, endp);
1384 up(&u132->scheduler_lock);
1385 u132_endp_put_kref(u132, endp);
1386 return;
1387 } else if (endp->active) {
1388 up(&u132->scheduler_lock);
1389 u132_endp_put_kref(u132, endp);
1390 return;
1391 } else if (ring->in_use) {
1392 up(&u132->scheduler_lock);
1393 u132_endp_put_kref(u132, endp);
1394 return;
1395 } else if (endp->queue_next == endp->queue_last) {
1396 up(&u132->scheduler_lock);
1397 u132_endp_put_kref(u132, endp);
1398 return;
1399 } else if (endp->pipetype == PIPE_INTERRUPT) {
1400 u8 address = u132->addr[endp->usb_addr].address;
1401 if (ring->in_use) {
1402 up(&u132->scheduler_lock);
1403 u132_endp_put_kref(u132, endp);
1404 return;
1405 } else {
1406 int retval;
1407 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1408 endp->queue_next];
1409 endp->active = 1;
1410 ring->curr_endp = endp;
1411 ring->in_use = 1;
1412 up(&u132->scheduler_lock);
1413 retval = edset_single(u132, ring, endp, urb, address,
1414 endp->toggle_bits, u132_hcd_interrupt_recv);
1415 if (retval == 0) {
1416 } else
1417 u132_hcd_giveback_urb(u132, endp, urb, retval);
1418 return;
1419 }
1420 } else if (endp->pipetype == PIPE_CONTROL) {
1421 u8 address = u132->addr[endp->usb_addr].address;
1422 if (ring->in_use) {
1423 up(&u132->scheduler_lock);
1424 u132_endp_put_kref(u132, endp);
1425 return;
1426 } else if (address == 0) {
1427 int retval;
1428 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1429 endp->queue_next];
1430 endp->active = 1;
1431 ring->curr_endp = endp;
1432 ring->in_use = 1;
1433 up(&u132->scheduler_lock);
1434 retval = edset_setup(u132, ring, endp, urb, address,
1435 0x2, u132_hcd_initial_setup_sent);
1436 if (retval == 0) {
1437 } else
1438 u132_hcd_giveback_urb(u132, endp, urb, retval);
1439 return;
1440 } else if (endp->usb_addr == 0) {
1441 int retval;
1442 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1443 endp->queue_next];
1444 endp->active = 1;
1445 ring->curr_endp = endp;
1446 ring->in_use = 1;
1447 up(&u132->scheduler_lock);
1448 retval = edset_setup(u132, ring, endp, urb, 0, 0x2,
1449 u132_hcd_enumeration_address_sent);
1450 if (retval == 0) {
1451 } else
1452 u132_hcd_giveback_urb(u132, endp, urb, retval);
1453 return;
1454 } else {
1455 int retval;
1456 u8 address = u132->addr[endp->usb_addr].address;
1457 struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1458 endp->queue_next];
1459 endp->active = 1;
1460 ring->curr_endp = endp;
1461 ring->in_use = 1;
1462 up(&u132->scheduler_lock);
1463 retval = edset_setup(u132, ring, endp, urb, address,
1464 0x2, u132_hcd_configure_setup_sent);
1465 if (retval == 0) {
1466 } else
1467 u132_hcd_giveback_urb(u132, endp, urb, retval);
1468 return;
1469 }
1470 } else {
1471 if (endp->input) {
1472 u8 address = u132->addr[endp->usb_addr].address;
1473 if (ring->in_use) {
1474 up(&u132->scheduler_lock);
1475 u132_endp_put_kref(u132, endp);
1476 return;
1477 } else {
1478 int retval;
1479 struct urb *urb = endp->urb_list[
1480 ENDP_QUEUE_MASK & endp->queue_next];
1481 endp->active = 1;
1482 ring->curr_endp = endp;
1483 ring->in_use = 1;
1484 up(&u132->scheduler_lock);
1485 retval = edset_input(u132, ring, endp, urb,
1486 address, endp->toggle_bits,
1487 u132_hcd_bulk_input_recv);
1488 if (retval == 0) {
1489 } else
1490 u132_hcd_giveback_urb(u132, endp, urb,
1491 retval);
1492 return;
1493 }
1494 } else { /* output pipe */
1495 u8 address = u132->addr[endp->usb_addr].address;
1496 if (ring->in_use) {
1497 up(&u132->scheduler_lock);
1498 u132_endp_put_kref(u132, endp);
1499 return;
1500 } else {
1501 int retval;
1502 struct urb *urb = endp->urb_list[
1503 ENDP_QUEUE_MASK & endp->queue_next];
1504 endp->active = 1;
1505 ring->curr_endp = endp;
1506 ring->in_use = 1;
1507 up(&u132->scheduler_lock);
1508 retval = edset_output(u132, ring, endp, urb,
1509 address, endp->toggle_bits,
1510 u132_hcd_bulk_output_sent);
1511 if (retval == 0) {
1512 } else
1513 u132_hcd_giveback_urb(u132, endp, urb,
1514 retval);
1515 return;
1516 }
1517 }
1518 }
1519 }
1520 #ifdef CONFIG_PM
1521
1522 static void port_power(struct u132 *u132, int pn, int is_on)
1523 {
1524 u132->port[pn].power = is_on;
1525 }
1526
1527 #endif
1528
1529 static void u132_power(struct u132 *u132, int is_on)
1530 {
1531 struct usb_hcd *hcd = u132_to_hcd(u132)
1532 ; /* hub is inactive unless the port is powered */
1533 if (is_on) {
1534 if (u132->power)
1535 return;
1536 u132->power = 1;
1537 hcd->self.controller->power.power_state = PMSG_ON;
1538 } else {
1539 u132->power = 0;
1540 hcd->state = HC_STATE_HALT;
1541 hcd->self.controller->power.power_state = PMSG_SUSPEND;
1542 }
1543 }
1544
1545 static int u132_periodic_reinit(struct u132 *u132)
1546 {
1547 int retval;
1548 u32 fi = u132->hc_fminterval & 0x03fff;
1549 u32 fit;
1550 u32 fminterval;
1551 retval = u132_read_pcimem(u132, fminterval, &fminterval);
1552 if (retval)
1553 return retval;
1554 fit = fminterval & FIT;
1555 retval = u132_write_pcimem(u132, fminterval,
1556 (fit ^ FIT) | u132->hc_fminterval);
1557 if (retval)
1558 return retval;
1559 retval = u132_write_pcimem(u132, periodicstart,
1560 ((9 *fi) / 10) & 0x3fff);
1561 if (retval)
1562 return retval;
1563 return 0;
1564 }
1565
1566 static char *hcfs2string(int state)
1567 {
1568 switch (state) {
1569 case OHCI_USB_RESET:
1570 return "reset";
1571 case OHCI_USB_RESUME:
1572 return "resume";
1573 case OHCI_USB_OPER:
1574 return "operational";
1575 case OHCI_USB_SUSPEND:
1576 return "suspend";
1577 }
1578 return "?";
1579 }
1580
1581 static int u132_init(struct u132 *u132)
1582 {
1583 int retval;
1584 u32 control;
1585 u132_disable(u132);
1586 u132->next_statechange = jiffies;
1587 retval = u132_write_pcimem(u132, intrdisable, OHCI_INTR_MIE);
1588 if (retval)
1589 return retval;
1590 retval = u132_read_pcimem(u132, control, &control);
1591 if (retval)
1592 return retval;
1593 if (u132->num_ports == 0) {
1594 u32 rh_a = -1;
1595 retval = u132_read_pcimem(u132, roothub.a, &rh_a);
1596 if (retval)
1597 return retval;
1598 u132->num_ports = rh_a & RH_A_NDP;
1599 retval = read_roothub_info(u132);
1600 if (retval)
1601 return retval;
1602 }
1603 if (u132->num_ports > MAX_U132_PORTS) {
1604 return -EINVAL;
1605 }
1606 return 0;
1607 }
1608
1609
1610 /* Start an OHCI controller, set the BUS operational
1611 * resets USB and controller
1612 * enable interrupts
1613 */
1614 static int u132_run(struct u132 *u132)
1615 {
1616 int retval;
1617 u32 control;
1618 u32 status;
1619 u32 fminterval;
1620 u32 periodicstart;
1621 u32 cmdstatus;
1622 u32 roothub_a;
1623 int mask = OHCI_INTR_INIT;
1624 int first = u132->hc_fminterval == 0;
1625 int sleep_time = 0;
1626 int reset_timeout = 30; /* ... allow extra time */
1627 u132_disable(u132);
1628 if (first) {
1629 u32 temp;
1630 retval = u132_read_pcimem(u132, fminterval, &temp);
1631 if (retval)
1632 return retval;
1633 u132->hc_fminterval = temp & 0x3fff;
1634 if (u132->hc_fminterval != FI) {
1635 }
1636 u132->hc_fminterval |= FSMP(u132->hc_fminterval) << 16;
1637 }
1638 retval = u132_read_pcimem(u132, control, &u132->hc_control);
1639 if (retval)
1640 return retval;
1641 dev_info(&u132->platform_dev->dev, "resetting from state '%s', control "
1642 "= %08X\n", hcfs2string(u132->hc_control & OHCI_CTRL_HCFS),
1643 u132->hc_control);
1644 switch (u132->hc_control & OHCI_CTRL_HCFS) {
1645 case OHCI_USB_OPER:
1646 sleep_time = 0;
1647 break;
1648 case OHCI_USB_SUSPEND:
1649 case OHCI_USB_RESUME:
1650 u132->hc_control &= OHCI_CTRL_RWC;
1651 u132->hc_control |= OHCI_USB_RESUME;
1652 sleep_time = 10;
1653 break;
1654 default:
1655 u132->hc_control &= OHCI_CTRL_RWC;
1656 u132->hc_control |= OHCI_USB_RESET;
1657 sleep_time = 50;
1658 break;
1659 }
1660 retval = u132_write_pcimem(u132, control, u132->hc_control);
1661 if (retval)
1662 return retval;
1663 retval = u132_read_pcimem(u132, control, &control);
1664 if (retval)
1665 return retval;
1666 msleep(sleep_time);
1667 retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
1668 if (retval)
1669 return retval;
1670 if (!(roothub_a & RH_A_NPS)) {
1671 int temp; /* power down each port */
1672 for (temp = 0; temp < u132->num_ports; temp++) {
1673 retval = u132_write_pcimem(u132,
1674 roothub.portstatus[temp], RH_PS_LSDA);
1675 if (retval)
1676 return retval;
1677 }
1678 }
1679 retval = u132_read_pcimem(u132, control, &control);
1680 if (retval)
1681 return retval;
1682 retry:retval = u132_read_pcimem(u132, cmdstatus, &status);
1683 if (retval)
1684 return retval;
1685 retval = u132_write_pcimem(u132, cmdstatus, OHCI_HCR);
1686 if (retval)
1687 return retval;
1688 extra:{
1689 retval = u132_read_pcimem(u132, cmdstatus, &status);
1690 if (retval)
1691 return retval;
1692 if (0 != (status & OHCI_HCR)) {
1693 if (--reset_timeout == 0) {
1694 dev_err(&u132->platform_dev->dev, "USB HC reset"
1695 " timed out!\n");
1696 return -ENODEV;
1697 } else {
1698 msleep(5);
1699 goto extra;
1700 }
1701 }
1702 }
1703 if (u132->flags & OHCI_QUIRK_INITRESET) {
1704 retval = u132_write_pcimem(u132, control, u132->hc_control);
1705 if (retval)
1706 return retval;
1707 retval = u132_read_pcimem(u132, control, &control);
1708 if (retval)
1709 return retval;
1710 }
1711 retval = u132_write_pcimem(u132, ed_controlhead, 0x00000000);
1712 if (retval)
1713 return retval;
1714 retval = u132_write_pcimem(u132, ed_bulkhead, 0x11000000);
1715 if (retval)
1716 return retval;
1717 retval = u132_write_pcimem(u132, hcca, 0x00000000);
1718 if (retval)
1719 return retval;
1720 retval = u132_periodic_reinit(u132);
1721 if (retval)
1722 return retval;
1723 retval = u132_read_pcimem(u132, fminterval, &fminterval);
1724 if (retval)
1725 return retval;
1726 retval = u132_read_pcimem(u132, periodicstart, &periodicstart);
1727 if (retval)
1728 return retval;
1729 if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) {
1730 if (!(u132->flags & OHCI_QUIRK_INITRESET)) {
1731 u132->flags |= OHCI_QUIRK_INITRESET;
1732 goto retry;
1733 } else
1734 dev_err(&u132->platform_dev->dev, "init err(%08x %04x)"
1735 "\n", fminterval, periodicstart);
1736 } /* start controller operations */
1737 u132->hc_control &= OHCI_CTRL_RWC;
1738 u132->hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER;
1739 retval = u132_write_pcimem(u132, control, u132->hc_control);
1740 if (retval)
1741 return retval;
1742 retval = u132_write_pcimem(u132, cmdstatus, OHCI_BLF);
1743 if (retval)
1744 return retval;
1745 retval = u132_read_pcimem(u132, cmdstatus, &cmdstatus);
1746 if (retval)
1747 return retval;
1748 retval = u132_read_pcimem(u132, control, &control);
1749 if (retval)
1750 return retval;
1751 u132_to_hcd(u132)->state = HC_STATE_RUNNING;
1752 retval = u132_write_pcimem(u132, roothub.status, RH_HS_DRWE);
1753 if (retval)
1754 return retval;
1755 retval = u132_write_pcimem(u132, intrstatus, mask);
1756 if (retval)
1757 return retval;
1758 retval = u132_write_pcimem(u132, intrdisable,
1759 OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO |
1760 OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH |
1761 OHCI_INTR_SO);
1762 if (retval)
1763 return retval; /* handle root hub init quirks ... */
1764 retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
1765 if (retval)
1766 return retval;
1767 roothub_a &= ~(RH_A_PSM | RH_A_OCPM);
1768 if (u132->flags & OHCI_QUIRK_SUPERIO) {
1769 roothub_a |= RH_A_NOCP;
1770 roothub_a &= ~(RH_A_POTPGT | RH_A_NPS);
1771 retval = u132_write_pcimem(u132, roothub.a, roothub_a);
1772 if (retval)
1773 return retval;
1774 } else if ((u132->flags & OHCI_QUIRK_AMD756) || distrust_firmware) {
1775 roothub_a |= RH_A_NPS;
1776 retval = u132_write_pcimem(u132, roothub.a, roothub_a);
1777 if (retval)
1778 return retval;
1779 }
1780 retval = u132_write_pcimem(u132, roothub.status, RH_HS_LPSC);
1781 if (retval)
1782 return retval;
1783 retval = u132_write_pcimem(u132, roothub.b,
1784 (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM);
1785 if (retval)
1786 return retval;
1787 retval = u132_read_pcimem(u132, control, &control);
1788 if (retval)
1789 return retval;
1790 mdelay((roothub_a >> 23) & 0x1fe);
1791 u132_to_hcd(u132)->state = HC_STATE_RUNNING;
1792 return 0;
1793 }
1794
1795 static void u132_hcd_stop(struct usb_hcd *hcd)
1796 {
1797 struct u132 *u132 = hcd_to_u132(hcd);
1798 if (u132->going > 1) {
1799 dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p) has b"
1800 "een removed %d\n", u132, hcd, u132->going);
1801 } else if (u132->going > 0) {
1802 dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
1803 "ed\n", hcd);
1804 } else {
1805 mutex_lock(&u132->sw_lock);
1806 msleep(100);
1807 u132_power(u132, 0);
1808 mutex_unlock(&u132->sw_lock);
1809 }
1810 }
1811
1812 static int u132_hcd_start(struct usb_hcd *hcd)
1813 {
1814 struct u132 *u132 = hcd_to_u132(hcd);
1815 if (u132->going > 1) {
1816 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1817 , u132->going);
1818 return -ENODEV;
1819 } else if (u132->going > 0) {
1820 dev_err(&u132->platform_dev->dev, "device is being removed\n");
1821 return -ESHUTDOWN;
1822 } else if (hcd->self.controller) {
1823 int retval;
1824 struct platform_device *pdev =
1825 to_platform_device(hcd->self.controller);
1826 u16 vendor = ((struct u132_platform_data *)
1827 (pdev->dev.platform_data))->vendor;
1828 u16 device = ((struct u132_platform_data *)
1829 (pdev->dev.platform_data))->device;
1830 mutex_lock(&u132->sw_lock);
1831 msleep(10);
1832 if (vendor == PCI_VENDOR_ID_AMD && device == 0x740c) {
1833 u132->flags = OHCI_QUIRK_AMD756;
1834 } else if (vendor == PCI_VENDOR_ID_OPTI && device == 0xc861) {
1835 dev_err(&u132->platform_dev->dev, "WARNING: OPTi workar"
1836 "ounds unavailable\n");
1837 } else if (vendor == PCI_VENDOR_ID_COMPAQ && device == 0xa0f8)
1838 u132->flags |= OHCI_QUIRK_ZFMICRO;
1839 retval = u132_run(u132);
1840 if (retval) {
1841 u132_disable(u132);
1842 u132->going = 1;
1843 }
1844 msleep(100);
1845 mutex_unlock(&u132->sw_lock);
1846 return retval;
1847 } else {
1848 dev_err(&u132->platform_dev->dev, "platform_device missing\n");
1849 return -ENODEV;
1850 }
1851 }
1852
1853 static int u132_hcd_reset(struct usb_hcd *hcd)
1854 {
1855 struct u132 *u132 = hcd_to_u132(hcd);
1856 if (u132->going > 1) {
1857 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1858 , u132->going);
1859 return -ENODEV;
1860 } else if (u132->going > 0) {
1861 dev_err(&u132->platform_dev->dev, "device is being removed\n");
1862 return -ESHUTDOWN;
1863 } else {
1864 int retval;
1865 mutex_lock(&u132->sw_lock);
1866 retval = u132_init(u132);
1867 if (retval) {
1868 u132_disable(u132);
1869 u132->going = 1;
1870 }
1871 mutex_unlock(&u132->sw_lock);
1872 return retval;
1873 }
1874 }
1875
1876 static int create_endpoint_and_queue_int(struct u132 *u132,
1877 struct u132_udev *udev, struct urb *urb,
1878 struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
1879 gfp_t mem_flags)
1880 {
1881 struct u132_ring *ring;
1882 unsigned long irqs;
1883 int rc;
1884 u8 endp_number;
1885 struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
1886
1887 if (!endp) {
1888 return -ENOMEM;
1889 }
1890
1891 spin_lock_init(&endp->queue_lock.slock);
1892 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
1893 rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
1894 if (rc) {
1895 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1896 kfree(endp);
1897 return rc;
1898 }
1899
1900 endp_number = ++u132->num_endpoints;
1901 urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
1902 INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
1903 INIT_LIST_HEAD(&endp->urb_more);
1904 ring = endp->ring = &u132->ring[0];
1905 if (ring->curr_endp) {
1906 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
1907 } else {
1908 INIT_LIST_HEAD(&endp->endp_ring);
1909 ring->curr_endp = endp;
1910 }
1911 ring->length += 1;
1912 endp->dequeueing = 0;
1913 endp->edset_flush = 0;
1914 endp->active = 0;
1915 endp->delayed = 0;
1916 endp->endp_number = endp_number;
1917 endp->u132 = u132;
1918 endp->hep = urb->ep;
1919 endp->pipetype = usb_pipetype(urb->pipe);
1920 u132_endp_init_kref(u132, endp);
1921 if (usb_pipein(urb->pipe)) {
1922 endp->toggle_bits = 0x2;
1923 usb_settoggle(udev->usb_device, usb_endp, 0, 0);
1924 endp->input = 1;
1925 endp->output = 0;
1926 udev->endp_number_in[usb_endp] = endp_number;
1927 u132_udev_get_kref(u132, udev);
1928 } else {
1929 endp->toggle_bits = 0x2;
1930 usb_settoggle(udev->usb_device, usb_endp, 1, 0);
1931 endp->input = 0;
1932 endp->output = 1;
1933 udev->endp_number_out[usb_endp] = endp_number;
1934 u132_udev_get_kref(u132, udev);
1935 }
1936 urb->hcpriv = u132;
1937 endp->delayed = 1;
1938 endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
1939 endp->udev_number = address;
1940 endp->usb_addr = usb_addr;
1941 endp->usb_endp = usb_endp;
1942 endp->queue_size = 1;
1943 endp->queue_last = 0;
1944 endp->queue_next = 0;
1945 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
1946 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1947 u132_endp_queue_work(u132, endp, msecs_to_jiffies(urb->interval));
1948 return 0;
1949 }
1950
1951 static int queue_int_on_old_endpoint(struct u132 *u132,
1952 struct u132_udev *udev, struct urb *urb,
1953 struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
1954 u8 usb_endp, u8 address)
1955 {
1956 urb->hcpriv = u132;
1957 endp->delayed = 1;
1958 endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
1959 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
1960 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
1961 } else {
1962 struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
1963 GFP_ATOMIC);
1964 if (urbq == NULL) {
1965 endp->queue_size -= 1;
1966 return -ENOMEM;
1967 } else {
1968 list_add_tail(&urbq->urb_more, &endp->urb_more);
1969 urbq->urb = urb;
1970 }
1971 }
1972 return 0;
1973 }
1974
1975 static int create_endpoint_and_queue_bulk(struct u132 *u132,
1976 struct u132_udev *udev, struct urb *urb,
1977 struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
1978 gfp_t mem_flags)
1979 {
1980 int ring_number;
1981 struct u132_ring *ring;
1982 unsigned long irqs;
1983 int rc;
1984 u8 endp_number;
1985 struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
1986
1987 if (!endp) {
1988 return -ENOMEM;
1989 }
1990
1991 spin_lock_init(&endp->queue_lock.slock);
1992 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
1993 rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
1994 if (rc) {
1995 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1996 kfree(endp);
1997 return rc;
1998 }
1999
2000 endp_number = ++u132->num_endpoints;
2001 urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
2002 INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
2003 INIT_LIST_HEAD(&endp->urb_more);
2004 endp->dequeueing = 0;
2005 endp->edset_flush = 0;
2006 endp->active = 0;
2007 endp->delayed = 0;
2008 endp->endp_number = endp_number;
2009 endp->u132 = u132;
2010 endp->hep = urb->ep;
2011 endp->pipetype = usb_pipetype(urb->pipe);
2012 u132_endp_init_kref(u132, endp);
2013 if (usb_pipein(urb->pipe)) {
2014 endp->toggle_bits = 0x2;
2015 usb_settoggle(udev->usb_device, usb_endp, 0, 0);
2016 ring_number = 3;
2017 endp->input = 1;
2018 endp->output = 0;
2019 udev->endp_number_in[usb_endp] = endp_number;
2020 u132_udev_get_kref(u132, udev);
2021 } else {
2022 endp->toggle_bits = 0x2;
2023 usb_settoggle(udev->usb_device, usb_endp, 1, 0);
2024 ring_number = 2;
2025 endp->input = 0;
2026 endp->output = 1;
2027 udev->endp_number_out[usb_endp] = endp_number;
2028 u132_udev_get_kref(u132, udev);
2029 }
2030 ring = endp->ring = &u132->ring[ring_number - 1];
2031 if (ring->curr_endp) {
2032 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
2033 } else {
2034 INIT_LIST_HEAD(&endp->endp_ring);
2035 ring->curr_endp = endp;
2036 }
2037 ring->length += 1;
2038 urb->hcpriv = u132;
2039 endp->udev_number = address;
2040 endp->usb_addr = usb_addr;
2041 endp->usb_endp = usb_endp;
2042 endp->queue_size = 1;
2043 endp->queue_last = 0;
2044 endp->queue_next = 0;
2045 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2046 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2047 u132_endp_queue_work(u132, endp, 0);
2048 return 0;
2049 }
2050
2051 static int queue_bulk_on_old_endpoint(struct u132 *u132, struct u132_udev *udev,
2052 struct urb *urb,
2053 struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
2054 u8 usb_endp, u8 address)
2055 {
2056 urb->hcpriv = u132;
2057 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2058 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2059 } else {
2060 struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
2061 GFP_ATOMIC);
2062 if (urbq == NULL) {
2063 endp->queue_size -= 1;
2064 return -ENOMEM;
2065 } else {
2066 list_add_tail(&urbq->urb_more, &endp->urb_more);
2067 urbq->urb = urb;
2068 }
2069 }
2070 return 0;
2071 }
2072
2073 static int create_endpoint_and_queue_control(struct u132 *u132,
2074 struct urb *urb,
2075 struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp,
2076 gfp_t mem_flags)
2077 {
2078 struct u132_ring *ring;
2079 unsigned long irqs;
2080 int rc;
2081 u8 endp_number;
2082 struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
2083
2084 if (!endp) {
2085 return -ENOMEM;
2086 }
2087
2088 spin_lock_init(&endp->queue_lock.slock);
2089 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
2090 rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
2091 if (rc) {
2092 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2093 kfree(endp);
2094 return rc;
2095 }
2096
2097 endp_number = ++u132->num_endpoints;
2098 urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
2099 INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
2100 INIT_LIST_HEAD(&endp->urb_more);
2101 ring = endp->ring = &u132->ring[0];
2102 if (ring->curr_endp) {
2103 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
2104 } else {
2105 INIT_LIST_HEAD(&endp->endp_ring);
2106 ring->curr_endp = endp;
2107 }
2108 ring->length += 1;
2109 endp->dequeueing = 0;
2110 endp->edset_flush = 0;
2111 endp->active = 0;
2112 endp->delayed = 0;
2113 endp->endp_number = endp_number;
2114 endp->u132 = u132;
2115 endp->hep = urb->ep;
2116 u132_endp_init_kref(u132, endp);
2117 u132_endp_get_kref(u132, endp);
2118 if (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_init_kref(u132, udev);
2128 u132_udev_get_kref(u132, udev);
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 } else { /*(usb_addr > 0) */
2140 u8 address = u132->addr[usb_addr].address;
2141 struct u132_udev *udev = &u132->udev[address];
2142 endp->udev_number = address;
2143 endp->usb_addr = usb_addr;
2144 endp->usb_endp = usb_endp;
2145 endp->input = 1;
2146 endp->output = 1;
2147 endp->pipetype = usb_pipetype(urb->pipe);
2148 u132_udev_get_kref(u132, udev);
2149 udev->enumeration = 2;
2150 udev->endp_number_in[usb_endp] = endp_number;
2151 udev->endp_number_out[usb_endp] = endp_number;
2152 urb->hcpriv = u132;
2153 endp->queue_size = 1;
2154 endp->queue_last = 0;
2155 endp->queue_next = 0;
2156 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2157 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2158 u132_endp_queue_work(u132, endp, 0);
2159 return 0;
2160 }
2161 }
2162
2163 static int queue_control_on_old_endpoint(struct u132 *u132,
2164 struct urb *urb,
2165 struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
2166 u8 usb_endp)
2167 {
2168 if (usb_addr == 0) {
2169 if (usb_pipein(urb->pipe)) {
2170 urb->hcpriv = u132;
2171 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2172 endp->urb_list[ENDP_QUEUE_MASK &
2173 endp->queue_last++] = urb;
2174 } else {
2175 struct u132_urbq *urbq =
2176 kmalloc(sizeof(struct u132_urbq),
2177 GFP_ATOMIC);
2178 if (urbq == NULL) {
2179 endp->queue_size -= 1;
2180 return -ENOMEM;
2181 } else {
2182 list_add_tail(&urbq->urb_more,
2183 &endp->urb_more);
2184 urbq->urb = urb;
2185 }
2186 }
2187 return 0;
2188 } else { /* usb_pipeout(urb->pipe) */
2189 struct u132_addr *addr = &u132->addr[usb_dev->devnum];
2190 int I = MAX_U132_UDEVS;
2191 int i = 0;
2192 while (--I > 0) {
2193 struct u132_udev *udev = &u132->udev[++i];
2194 if (udev->usb_device) {
2195 continue;
2196 } else {
2197 udev->enumeration = 1;
2198 u132->addr[0].address = i;
2199 endp->udev_number = i;
2200 udev->udev_number = i;
2201 udev->usb_addr = usb_dev->devnum;
2202 u132_udev_init_kref(u132, udev);
2203 udev->endp_number_in[usb_endp] =
2204 endp->endp_number;
2205 u132_udev_get_kref(u132, udev);
2206 udev->endp_number_out[usb_endp] =
2207 endp->endp_number;
2208 udev->usb_device = usb_dev;
2209 ((u8 *) (urb->setup_packet))[2] =
2210 addr->address = i;
2211 u132_udev_get_kref(u132, udev);
2212 break;
2213 }
2214 }
2215 if (I == 0) {
2216 dev_err(&u132->platform_dev->dev, "run out of d"
2217 "evice space\n");
2218 return -EINVAL;
2219 }
2220 urb->hcpriv = u132;
2221 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2222 endp->urb_list[ENDP_QUEUE_MASK &
2223 endp->queue_last++] = urb;
2224 } else {
2225 struct u132_urbq *urbq =
2226 kmalloc(sizeof(struct u132_urbq),
2227 GFP_ATOMIC);
2228 if (urbq == NULL) {
2229 endp->queue_size -= 1;
2230 return -ENOMEM;
2231 } else {
2232 list_add_tail(&urbq->urb_more,
2233 &endp->urb_more);
2234 urbq->urb = urb;
2235 }
2236 }
2237 return 0;
2238 }
2239 } else { /*(usb_addr > 0) */
2240 u8 address = u132->addr[usb_addr].address;
2241 struct u132_udev *udev = &u132->udev[address];
2242 urb->hcpriv = u132;
2243 if (udev->enumeration == 2) {
2244 } else
2245 udev->enumeration = 2;
2246 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2247 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
2248 urb;
2249 } else {
2250 struct u132_urbq *urbq =
2251 kmalloc(sizeof(struct u132_urbq), GFP_ATOMIC);
2252 if (urbq == NULL) {
2253 endp->queue_size -= 1;
2254 return -ENOMEM;
2255 } else {
2256 list_add_tail(&urbq->urb_more, &endp->urb_more);
2257 urbq->urb = urb;
2258 }
2259 }
2260 return 0;
2261 }
2262 }
2263
2264 static int u132_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
2265 gfp_t mem_flags)
2266 {
2267 struct u132 *u132 = hcd_to_u132(hcd);
2268 if (irqs_disabled()) {
2269 if (__GFP_WAIT & mem_flags) {
2270 printk(KERN_ERR "invalid context for function that migh"
2271 "t sleep\n");
2272 return -EINVAL;
2273 }
2274 }
2275 if (u132->going > 1) {
2276 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2277 , u132->going);
2278 return -ENODEV;
2279 } else if (u132->going > 0) {
2280 dev_err(&u132->platform_dev->dev, "device is being removed "
2281 "urb=%p\n", urb);
2282 return -ESHUTDOWN;
2283 } else {
2284 u8 usb_addr = usb_pipedevice(urb->pipe);
2285 u8 usb_endp = usb_pipeendpoint(urb->pipe);
2286 struct usb_device *usb_dev = urb->dev;
2287 if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) {
2288 u8 address = u132->addr[usb_addr].address;
2289 struct u132_udev *udev = &u132->udev[address];
2290 struct u132_endp *endp = urb->ep->hcpriv;
2291 urb->actual_length = 0;
2292 if (endp) {
2293 unsigned long irqs;
2294 int retval;
2295 spin_lock_irqsave(&endp->queue_lock.slock,
2296 irqs);
2297 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2298 if (retval == 0) {
2299 retval = queue_int_on_old_endpoint(
2300 u132, udev, urb,
2301 usb_dev, endp,
2302 usb_addr, usb_endp,
2303 address);
2304 if (retval)
2305 usb_hcd_unlink_urb_from_ep(
2306 hcd, urb);
2307 }
2308 spin_unlock_irqrestore(&endp->queue_lock.slock,
2309 irqs);
2310 if (retval) {
2311 return retval;
2312 } else {
2313 u132_endp_queue_work(u132, endp,
2314 msecs_to_jiffies(urb->interval))
2315 ;
2316 return 0;
2317 }
2318 } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2319 return -EINVAL;
2320 } else { /*(endp == NULL) */
2321 return create_endpoint_and_queue_int(u132, udev,
2322 urb, usb_dev, usb_addr,
2323 usb_endp, address, mem_flags);
2324 }
2325 } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
2326 dev_err(&u132->platform_dev->dev, "the hardware does no"
2327 "t support PIPE_ISOCHRONOUS\n");
2328 return -EINVAL;
2329 } else if (usb_pipetype(urb->pipe) == PIPE_BULK) {
2330 u8 address = u132->addr[usb_addr].address;
2331 struct u132_udev *udev = &u132->udev[address];
2332 struct u132_endp *endp = urb->ep->hcpriv;
2333 urb->actual_length = 0;
2334 if (endp) {
2335 unsigned long irqs;
2336 int retval;
2337 spin_lock_irqsave(&endp->queue_lock.slock,
2338 irqs);
2339 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2340 if (retval == 0) {
2341 retval = queue_bulk_on_old_endpoint(
2342 u132, udev, urb,
2343 usb_dev, endp,
2344 usb_addr, usb_endp,
2345 address);
2346 if (retval)
2347 usb_hcd_unlink_urb_from_ep(
2348 hcd, urb);
2349 }
2350 spin_unlock_irqrestore(&endp->queue_lock.slock,
2351 irqs);
2352 if (retval) {
2353 return retval;
2354 } else {
2355 u132_endp_queue_work(u132, endp, 0);
2356 return 0;
2357 }
2358 } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2359 return -EINVAL;
2360 } else
2361 return create_endpoint_and_queue_bulk(u132,
2362 udev, urb, usb_dev, usb_addr,
2363 usb_endp, address, mem_flags);
2364 } else {
2365 struct u132_endp *endp = urb->ep->hcpriv;
2366 u16 urb_size = 8;
2367 u8 *b = urb->setup_packet;
2368 int i = 0;
2369 char data[30 *3 + 4];
2370 char *d = data;
2371 int m = (sizeof(data) - 1) / 3;
2372 int l = 0;
2373 data[0] = 0;
2374 while (urb_size-- > 0) {
2375 if (i > m) {
2376 } else if (i++ < m) {
2377 int w = sprintf(d, " %02X", *b++);
2378 d += w;
2379 l += w;
2380 } else
2381 d += sprintf(d, " ..");
2382 }
2383 if (endp) {
2384 unsigned long irqs;
2385 int retval;
2386 spin_lock_irqsave(&endp->queue_lock.slock,
2387 irqs);
2388 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2389 if (retval == 0) {
2390 retval = queue_control_on_old_endpoint(
2391 u132, urb, usb_dev,
2392 endp, usb_addr,
2393 usb_endp);
2394 if (retval)
2395 usb_hcd_unlink_urb_from_ep(
2396 hcd, urb);
2397 }
2398 spin_unlock_irqrestore(&endp->queue_lock.slock,
2399 irqs);
2400 if (retval) {
2401 return retval;
2402 } else {
2403 u132_endp_queue_work(u132, endp, 0);
2404 return 0;
2405 }
2406 } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2407 return -EINVAL;
2408 } else
2409 return create_endpoint_and_queue_control(u132,
2410 urb, usb_dev, usb_addr, usb_endp,
2411 mem_flags);
2412 }
2413 }
2414 }
2415
2416 static int dequeue_from_overflow_chain(struct u132 *u132,
2417 struct u132_endp *endp, struct urb *urb)
2418 {
2419 struct list_head *scan;
2420 struct list_head *head = &endp->urb_more;
2421 list_for_each(scan, head) {
2422 struct u132_urbq *urbq = list_entry(scan, struct u132_urbq,
2423 urb_more);
2424 if (urbq->urb == urb) {
2425 struct usb_hcd *hcd = u132_to_hcd(u132);
2426 list_del(scan);
2427 endp->queue_size -= 1;
2428 urb->error_count = 0;
2429 usb_hcd_giveback_urb(hcd, urb, 0);
2430 return 0;
2431 } else
2432 continue;
2433 }
2434 dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]=%p ring"
2435 "[%d] %c%c usb_endp=%d usb_addr=%d size=%d next=%04X last=%04X"
2436 "\n", urb, endp->endp_number, endp, endp->ring->number,
2437 endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
2438 endp->usb_endp, endp->usb_addr, endp->queue_size,
2439 endp->queue_next, endp->queue_last);
2440 return -EINVAL;
2441 }
2442
2443 static int u132_endp_urb_dequeue(struct u132 *u132, struct u132_endp *endp,
2444 struct urb *urb, int status)
2445 {
2446 unsigned long irqs;
2447 int rc;
2448
2449 spin_lock_irqsave(&endp->queue_lock.slock, irqs);
2450 rc = usb_hcd_check_unlink_urb(u132_to_hcd(u132), urb, status);
2451 if (rc) {
2452 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2453 return rc;
2454 }
2455 if (endp->queue_size == 0) {
2456 dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]"
2457 "=%p ring[%d] %c%c usb_endp=%d usb_addr=%d\n", urb,
2458 endp->endp_number, endp, endp->ring->number,
2459 endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
2460 endp->usb_endp, endp->usb_addr);
2461 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2462 return -EINVAL;
2463 }
2464 if (urb == endp->urb_list[ENDP_QUEUE_MASK & endp->queue_next]) {
2465 if (endp->active) {
2466 endp->dequeueing = 1;
2467 endp->edset_flush = 1;
2468 u132_endp_queue_work(u132, endp, 0);
2469 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2470 return 0;
2471 } else {
2472 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2473 u132_hcd_abandon_urb(u132, endp, urb, status);
2474 return 0;
2475 }
2476 } else {
2477 u16 queue_list = 0;
2478 u16 queue_size = endp->queue_size;
2479 u16 queue_scan = endp->queue_next;
2480 struct urb **urb_slot = NULL;
2481 while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
2482 if (urb == endp->urb_list[ENDP_QUEUE_MASK &
2483 ++queue_scan]) {
2484 urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
2485 queue_scan];
2486 break;
2487 } else
2488 continue;
2489 }
2490 while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
2491 *urb_slot = endp->urb_list[ENDP_QUEUE_MASK &
2492 ++queue_scan];
2493 urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
2494 queue_scan];
2495 }
2496 if (urb_slot) {
2497 struct usb_hcd *hcd = u132_to_hcd(u132);
2498
2499 usb_hcd_unlink_urb_from_ep(hcd, urb);
2500 endp->queue_size -= 1;
2501 if (list_empty(&endp->urb_more)) {
2502 spin_unlock_irqrestore(&endp->queue_lock.slock,
2503 irqs);
2504 } else {
2505 struct list_head *next = endp->urb_more.next;
2506 struct u132_urbq *urbq = list_entry(next,
2507 struct u132_urbq, urb_more);
2508 list_del(next);
2509 *urb_slot = urbq->urb;
2510 spin_unlock_irqrestore(&endp->queue_lock.slock,
2511 irqs);
2512 kfree(urbq);
2513 } urb->error_count = 0;
2514 usb_hcd_giveback_urb(hcd, urb, status);
2515 return 0;
2516 } else if (list_empty(&endp->urb_more)) {
2517 dev_err(&u132->platform_dev->dev, "urb=%p not found in "
2518 "endp[%d]=%p ring[%d] %c%c usb_endp=%d usb_addr"
2519 "=%d size=%d next=%04X last=%04X\n", urb,
2520 endp->endp_number, endp, endp->ring->number,
2521 endp->input ? 'I' : ' ',
2522 endp->output ? 'O' : ' ', endp->usb_endp,
2523 endp->usb_addr, endp->queue_size,
2524 endp->queue_next, endp->queue_last);
2525 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2526 return -EINVAL;
2527 } else {
2528 int retval;
2529
2530 usb_hcd_unlink_urb_from_ep(u132_to_hcd(u132), urb);
2531 retval = dequeue_from_overflow_chain(u132, endp,
2532 urb);
2533 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2534 return retval;
2535 }
2536 }
2537 }
2538
2539 static int u132_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
2540 {
2541 struct u132 *u132 = hcd_to_u132(hcd);
2542 if (u132->going > 2) {
2543 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2544 , u132->going);
2545 return -ENODEV;
2546 } else {
2547 u8 usb_addr = usb_pipedevice(urb->pipe);
2548 u8 usb_endp = usb_pipeendpoint(urb->pipe);
2549 u8 address = u132->addr[usb_addr].address;
2550 struct u132_udev *udev = &u132->udev[address];
2551 if (usb_pipein(urb->pipe)) {
2552 u8 endp_number = udev->endp_number_in[usb_endp];
2553 struct u132_endp *endp = u132->endp[endp_number - 1];
2554 return u132_endp_urb_dequeue(u132, endp, urb, status);
2555 } else {
2556 u8 endp_number = udev->endp_number_out[usb_endp];
2557 struct u132_endp *endp = u132->endp[endp_number - 1];
2558 return u132_endp_urb_dequeue(u132, endp, urb, status);
2559 }
2560 }
2561 }
2562
2563 static void u132_endpoint_disable(struct usb_hcd *hcd,
2564 struct usb_host_endpoint *hep)
2565 {
2566 struct u132 *u132 = hcd_to_u132(hcd);
2567 if (u132->going > 2) {
2568 dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p hep=%p"
2569 ") has been removed %d\n", u132, hcd, hep,
2570 u132->going);
2571 } else {
2572 struct u132_endp *endp = hep->hcpriv;
2573 if (endp)
2574 u132_endp_put_kref(u132, endp);
2575 }
2576 }
2577
2578 static int u132_get_frame(struct usb_hcd *hcd)
2579 {
2580 struct u132 *u132 = hcd_to_u132(hcd);
2581 if (u132->going > 1) {
2582 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2583 , u132->going);
2584 return -ENODEV;
2585 } else if (u132->going > 0) {
2586 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2587 return -ESHUTDOWN;
2588 } else {
2589 int frame = 0;
2590 dev_err(&u132->platform_dev->dev, "TODO: u132_get_frame\n");
2591 msleep(100);
2592 return frame;
2593 }
2594 }
2595
2596 static int u132_roothub_descriptor(struct u132 *u132,
2597 struct usb_hub_descriptor *desc)
2598 {
2599 int retval;
2600 u16 temp;
2601 u32 rh_a = -1;
2602 u32 rh_b = -1;
2603 retval = u132_read_pcimem(u132, roothub.a, &rh_a);
2604 if (retval)
2605 return retval;
2606 desc->bDescriptorType = 0x29;
2607 desc->bPwrOn2PwrGood = (rh_a & RH_A_POTPGT) >> 24;
2608 desc->bHubContrCurrent = 0;
2609 desc->bNbrPorts = u132->num_ports;
2610 temp = 1 + (u132->num_ports / 8);
2611 desc->bDescLength = 7 + 2 *temp;
2612 temp = 0;
2613 if (rh_a & RH_A_NPS)
2614 temp |= 0x0002;
2615 if (rh_a & RH_A_PSM)
2616 temp |= 0x0001;
2617 if (rh_a & RH_A_NOCP) {
2618 temp |= 0x0010;
2619 } else if (rh_a & RH_A_OCPM)
2620 temp |= 0x0008;
2621 desc->wHubCharacteristics = cpu_to_le16(temp);
2622 retval = u132_read_pcimem(u132, roothub.b, &rh_b);
2623 if (retval)
2624 return retval;
2625 memset(desc->bitmap, 0xff, sizeof(desc->bitmap));
2626 desc->bitmap[0] = rh_b & RH_B_DR;
2627 if (u132->num_ports > 7) {
2628 desc->bitmap[1] = (rh_b & RH_B_DR) >> 8;
2629 desc->bitmap[2] = 0xff;
2630 } else
2631 desc->bitmap[1] = 0xff;
2632 return 0;
2633 }
2634
2635 static int u132_roothub_status(struct u132 *u132, __le32 *desc)
2636 {
2637 u32 rh_status = -1;
2638 int ret_status = u132_read_pcimem(u132, roothub.status, &rh_status);
2639 *desc = cpu_to_le32(rh_status);
2640 return ret_status;
2641 }
2642
2643 static int u132_roothub_portstatus(struct u132 *u132, __le32 *desc, u16 wIndex)
2644 {
2645 if (wIndex == 0 || wIndex > u132->num_ports) {
2646 return -EINVAL;
2647 } else {
2648 int port = wIndex - 1;
2649 u32 rh_portstatus = -1;
2650 int ret_portstatus = u132_read_pcimem(u132,
2651 roothub.portstatus[port], &rh_portstatus);
2652 *desc = cpu_to_le32(rh_portstatus);
2653 if (*(u16 *) (desc + 2)) {
2654 dev_info(&u132->platform_dev->dev, "Port %d Status Chan"
2655 "ge = %08X\n", port, *desc);
2656 }
2657 return ret_portstatus;
2658 }
2659 }
2660
2661
2662 /* this timer value might be vendor-specific ... */
2663 #define PORT_RESET_HW_MSEC 10
2664 #define PORT_RESET_MSEC 10
2665 /* wrap-aware logic morphed from <linux/jiffies.h> */
2666 #define tick_before(t1, t2) ((s16)(((s16)(t1))-((s16)(t2))) < 0)
2667 static int u132_roothub_portreset(struct u132 *u132, int port_index)
2668 {
2669 int retval;
2670 u32 fmnumber;
2671 u16 now;
2672 u16 reset_done;
2673 retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2674 if (retval)
2675 return retval;
2676 now = fmnumber;
2677 reset_done = now + PORT_RESET_MSEC;
2678 do {
2679 u32 portstat;
2680 do {
2681 retval = u132_read_pcimem(u132,
2682 roothub.portstatus[port_index], &portstat);
2683 if (retval)
2684 return retval;
2685 if (RH_PS_PRS & portstat) {
2686 continue;
2687 } else
2688 break;
2689 } while (tick_before(now, reset_done));
2690 if (RH_PS_PRS & portstat)
2691 return -ENODEV;
2692 if (RH_PS_CCS & portstat) {
2693 if (RH_PS_PRSC & portstat) {
2694 retval = u132_write_pcimem(u132,
2695 roothub.portstatus[port_index],
2696 RH_PS_PRSC);
2697 if (retval)
2698 return retval;
2699 }
2700 } else
2701 break; /* start the next reset,
2702 sleep till it's probably done */
2703 retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
2704 RH_PS_PRS);
2705 if (retval)
2706 return retval;
2707 msleep(PORT_RESET_HW_MSEC);
2708 retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2709 if (retval)
2710 return retval;
2711 now = fmnumber;
2712 } while (tick_before(now, reset_done));
2713 return 0;
2714 }
2715
2716 static int u132_roothub_setportfeature(struct u132 *u132, u16 wValue,
2717 u16 wIndex)
2718 {
2719 if (wIndex == 0 || wIndex > u132->num_ports) {
2720 return -EINVAL;
2721 } else {
2722 int retval;
2723 int port_index = wIndex - 1;
2724 struct u132_port *port = &u132->port[port_index];
2725 port->Status &= ~(1 << wValue);
2726 switch (wValue) {
2727 case USB_PORT_FEAT_SUSPEND:
2728 retval = u132_write_pcimem(u132,
2729 roothub.portstatus[port_index], RH_PS_PSS);
2730 if (retval)
2731 return retval;
2732 return 0;
2733 case USB_PORT_FEAT_POWER:
2734 retval = u132_write_pcimem(u132,
2735 roothub.portstatus[port_index], RH_PS_PPS);
2736 if (retval)
2737 return retval;
2738 return 0;
2739 case USB_PORT_FEAT_RESET:
2740 retval = u132_roothub_portreset(u132, port_index);
2741 if (retval)
2742 return retval;
2743 return 0;
2744 default:
2745 return -EPIPE;
2746 }
2747 }
2748 }
2749
2750 static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
2751 u16 wIndex)
2752 {
2753 if (wIndex == 0 || wIndex > u132->num_ports) {
2754 return -EINVAL;
2755 } else {
2756 int port_index = wIndex - 1;
2757 u32 temp;
2758 int retval;
2759 struct u132_port *port = &u132->port[port_index];
2760 port->Status &= ~(1 << wValue);
2761 switch (wValue) {
2762 case USB_PORT_FEAT_ENABLE:
2763 temp = RH_PS_CCS;
2764 break;
2765 case USB_PORT_FEAT_C_ENABLE:
2766 temp = RH_PS_PESC;
2767 break;
2768 case USB_PORT_FEAT_SUSPEND:
2769 temp = RH_PS_POCI;
2770 if ((u132->hc_control & OHCI_CTRL_HCFS)
2771 != OHCI_USB_OPER) {
2772 dev_err(&u132->platform_dev->dev, "TODO resume_"
2773 "root_hub\n");
2774 }
2775 break;
2776 case USB_PORT_FEAT_C_SUSPEND:
2777 temp = RH_PS_PSSC;
2778 break;
2779 case USB_PORT_FEAT_POWER:
2780 temp = RH_PS_LSDA;
2781 break;
2782 case USB_PORT_FEAT_C_CONNECTION:
2783 temp = RH_PS_CSC;
2784 break;
2785 case USB_PORT_FEAT_C_OVER_CURRENT:
2786 temp = RH_PS_OCIC;
2787 break;
2788 case USB_PORT_FEAT_C_RESET:
2789 temp = RH_PS_PRSC;
2790 break;
2791 default:
2792 return -EPIPE;
2793 }
2794 retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
2795 temp);
2796 if (retval)
2797 return retval;
2798 return 0;
2799 }
2800 }
2801
2802
2803 /* the virtual root hub timer IRQ checks for hub status*/
2804 static int u132_hub_status_data(struct usb_hcd *hcd, char *buf)
2805 {
2806 struct u132 *u132 = hcd_to_u132(hcd);
2807 if (u132->going > 1) {
2808 dev_err(&u132->platform_dev->dev, "device hcd=%p has been remov"
2809 "ed %d\n", hcd, u132->going);
2810 return -ENODEV;
2811 } else if (u132->going > 0) {
2812 dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
2813 "ed\n", hcd);
2814 return -ESHUTDOWN;
2815 } else {
2816 int i, changed = 0, length = 1;
2817 if (u132->flags & OHCI_QUIRK_AMD756) {
2818 if ((u132->hc_roothub_a & RH_A_NDP) > MAX_ROOT_PORTS) {
2819 dev_err(&u132->platform_dev->dev, "bogus NDP, r"
2820 "ereads as NDP=%d\n",
2821 u132->hc_roothub_a & RH_A_NDP);
2822 goto done;
2823 }
2824 }
2825 if (u132->hc_roothub_status & (RH_HS_LPSC | RH_HS_OCIC)) {
2826 buf[0] = changed = 1;
2827 } else
2828 buf[0] = 0;
2829 if (u132->num_ports > 7) {
2830 buf[1] = 0;
2831 length++;
2832 }
2833 for (i = 0; i < u132->num_ports; i++) {
2834 if (u132->hc_roothub_portstatus[i] & (RH_PS_CSC |
2835 RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC |
2836 RH_PS_PRSC)) {
2837 changed = 1;
2838 if (i < 7) {
2839 buf[0] |= 1 << (i + 1);
2840 } else
2841 buf[1] |= 1 << (i - 7);
2842 continue;
2843 }
2844 if (!(u132->hc_roothub_portstatus[i] & RH_PS_CCS)) {
2845 continue;
2846 }
2847 if ((u132->hc_roothub_portstatus[i] & RH_PS_PSS)) {
2848 continue;
2849 }
2850 }
2851 done:return changed ? length : 0;
2852 }
2853 }
2854
2855 static int u132_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2856 u16 wIndex, char *buf, u16 wLength)
2857 {
2858 struct u132 *u132 = hcd_to_u132(hcd);
2859 if (u132->going > 1) {
2860 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2861 , u132->going);
2862 return -ENODEV;
2863 } else if (u132->going > 0) {
2864 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2865 return -ESHUTDOWN;
2866 } else {
2867 int retval = 0;
2868 mutex_lock(&u132->sw_lock);
2869 switch (typeReq) {
2870 case ClearHubFeature:
2871 switch (wValue) {
2872 case C_HUB_OVER_CURRENT:
2873 case C_HUB_LOCAL_POWER:
2874 break;
2875 default:
2876 goto stall;
2877 }
2878 break;
2879 case SetHubFeature:
2880 switch (wValue) {
2881 case C_HUB_OVER_CURRENT:
2882 case C_HUB_LOCAL_POWER:
2883 break;
2884 default:
2885 goto stall;
2886 }
2887 break;
2888 case ClearPortFeature:{
2889 retval = u132_roothub_clearportfeature(u132,
2890 wValue, wIndex);
2891 if (retval)
2892 goto error;
2893 break;
2894 }
2895 case GetHubDescriptor:{
2896 retval = u132_roothub_descriptor(u132,
2897 (struct usb_hub_descriptor *)buf);
2898 if (retval)
2899 goto error;
2900 break;
2901 }
2902 case GetHubStatus:{
2903 retval = u132_roothub_status(u132,
2904 (__le32 *) buf);
2905 if (retval)
2906 goto error;
2907 break;
2908 }
2909 case GetPortStatus:{
2910 retval = u132_roothub_portstatus(u132,
2911 (__le32 *) buf, wIndex);
2912 if (retval)
2913 goto error;
2914 break;
2915 }
2916 case SetPortFeature:{
2917 retval = u132_roothub_setportfeature(u132,
2918 wValue, wIndex);
2919 if (retval)
2920 goto error;
2921 break;
2922 }
2923 default:
2924 goto stall;
2925 error:u132_disable(u132);
2926 u132->going = 1;
2927 break;
2928 stall:retval = -EPIPE;
2929 break;
2930 }
2931 mutex_unlock(&u132->sw_lock);
2932 return retval;
2933 }
2934 }
2935
2936 static int u132_start_port_reset(struct usb_hcd *hcd, unsigned port_num)
2937 {
2938 struct u132 *u132 = hcd_to_u132(hcd);
2939 if (u132->going > 1) {
2940 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2941 , u132->going);
2942 return -ENODEV;
2943 } else if (u132->going > 0) {
2944 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2945 return -ESHUTDOWN;
2946 } else
2947 return 0;
2948 }
2949
2950 static void u132_hub_irq_enable(struct usb_hcd *hcd)
2951 {
2952 struct u132 *u132 = hcd_to_u132(hcd);
2953 if (u132->going > 1) {
2954 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2955 , u132->going);
2956 } else if (u132->going > 0)
2957 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2958 }
2959
2960
2961 #ifdef CONFIG_PM
2962 static int u132_hcd_suspend(struct usb_hcd *hcd, pm_message_t message)
2963 {
2964 struct u132 *u132 = hcd_to_u132(hcd);
2965 if (u132->going > 1) {
2966 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2967 , u132->going);
2968 return -ENODEV;
2969 } else if (u132->going > 0) {
2970 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2971 return -ESHUTDOWN;
2972 } else
2973 return 0;
2974 }
2975
2976 static int u132_hcd_resume(struct usb_hcd *hcd)
2977 {
2978 struct u132 *u132 = hcd_to_u132(hcd);
2979 if (u132->going > 1) {
2980 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2981 , u132->going);
2982 return -ENODEV;
2983 } else if (u132->going > 0) {
2984 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2985 return -ESHUTDOWN;
2986 } else
2987 return 0;
2988 }
2989
2990 static int u132_bus_suspend(struct usb_hcd *hcd)
2991 {
2992 struct u132 *u132 = hcd_to_u132(hcd);
2993 if (u132->going > 1) {
2994 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2995 , u132->going);
2996 return -ENODEV;
2997 } else if (u132->going > 0) {
2998 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2999 return -ESHUTDOWN;
3000 } else
3001 return 0;
3002 }
3003
3004 static int u132_bus_resume(struct usb_hcd *hcd)
3005 {
3006 struct u132 *u132 = hcd_to_u132(hcd);
3007 if (u132->going > 1) {
3008 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
3009 , u132->going);
3010 return -ENODEV;
3011 } else if (u132->going > 0) {
3012 dev_err(&u132->platform_dev->dev, "device is being removed\n");
3013 return -ESHUTDOWN;
3014 } else
3015 return 0;
3016 }
3017
3018 #else
3019 #define u132_hcd_suspend NULL
3020 #define u132_hcd_resume NULL
3021 #define u132_bus_suspend NULL
3022 #define u132_bus_resume NULL
3023 #endif
3024 static struct hc_driver u132_hc_driver = {
3025 .description = hcd_name,
3026 .hcd_priv_size = sizeof(struct u132),
3027 .irq = NULL,
3028 .flags = HCD_USB11 | HCD_MEMORY,
3029 .reset = u132_hcd_reset,
3030 .start = u132_hcd_start,
3031 .suspend = u132_hcd_suspend,
3032 .resume = u132_hcd_resume,
3033 .stop = u132_hcd_stop,
3034 .urb_enqueue = u132_urb_enqueue,
3035 .urb_dequeue = u132_urb_dequeue,
3036 .endpoint_disable = u132_endpoint_disable,
3037 .get_frame_number = u132_get_frame,
3038 .hub_status_data = u132_hub_status_data,
3039 .hub_control = u132_hub_control,
3040 .bus_suspend = u132_bus_suspend,
3041 .bus_resume = u132_bus_resume,
3042 .start_port_reset = u132_start_port_reset,
3043 .hub_irq_enable = u132_hub_irq_enable,
3044 };
3045
3046 /*
3047 * This function may be called by the USB core whilst the "usb_all_devices_rwsem"
3048 * is held for writing, thus this module must not call usb_remove_hcd()
3049 * synchronously - but instead should immediately stop activity to the
3050 * device and asynchronously call usb_remove_hcd()
3051 */
3052 static int __devexit u132_remove(struct platform_device *pdev)
3053 {
3054 struct usb_hcd *hcd = platform_get_drvdata(pdev);
3055 if (hcd) {
3056 struct u132 *u132 = hcd_to_u132(hcd);
3057 if (u132->going++ > 1) {
3058 dev_err(&u132->platform_dev->dev, "already being remove"
3059 "d\n");
3060 return -ENODEV;
3061 } else {
3062 int rings = MAX_U132_RINGS;
3063 int endps = MAX_U132_ENDPS;
3064 dev_err(&u132->platform_dev->dev, "removing device u132"
3065 ".%d\n", u132->sequence_num);
3066 msleep(100);
3067 mutex_lock(&u132->sw_lock);
3068 u132_monitor_cancel_work(u132);
3069 while (rings-- > 0) {
3070 struct u132_ring *ring = &u132->ring[rings];
3071 u132_ring_cancel_work(u132, ring);
3072 } while (endps-- > 0) {
3073 struct u132_endp *endp = u132->endp[endps];
3074 if (endp)
3075 u132_endp_cancel_work(u132, endp);
3076 }
3077 u132->going += 1;
3078 printk(KERN_INFO "removing device u132.%d\n",
3079 u132->sequence_num);
3080 mutex_unlock(&u132->sw_lock);
3081 usb_remove_hcd(hcd);
3082 u132_u132_put_kref(u132);
3083 return 0;
3084 }
3085 } else
3086 return 0;
3087 }
3088
3089 static void u132_initialise(struct u132 *u132, struct platform_device *pdev)
3090 {
3091 int rings = MAX_U132_RINGS;
3092 int ports = MAX_U132_PORTS;
3093 int addrs = MAX_U132_ADDRS;
3094 int udevs = MAX_U132_UDEVS;
3095 int endps = MAX_U132_ENDPS;
3096 u132->board = pdev->dev.platform_data;
3097 u132->platform_dev = pdev;
3098 u132->power = 0;
3099 u132->reset = 0;
3100 mutex_init(&u132->sw_lock);
3101 init_MUTEX(&u132->scheduler_lock);
3102 while (rings-- > 0) {
3103 struct u132_ring *ring = &u132->ring[rings];
3104 ring->u132 = u132;
3105 ring->number = rings + 1;
3106 ring->length = 0;
3107 ring->curr_endp = NULL;
3108 INIT_DELAYED_WORK(&ring->scheduler,
3109 u132_hcd_ring_work_scheduler);
3110 } mutex_lock(&u132->sw_lock);
3111 INIT_DELAYED_WORK(&u132->monitor, u132_hcd_monitor_work);
3112 while (ports-- > 0) {
3113 struct u132_port *port = &u132->port[ports];
3114 port->u132 = u132;
3115 port->reset = 0;
3116 port->enable = 0;
3117 port->power = 0;
3118 port->Status = 0;
3119 } while (addrs-- > 0) {
3120 struct u132_addr *addr = &u132->addr[addrs];
3121 addr->address = 0;
3122 } while (udevs-- > 0) {
3123 struct u132_udev *udev = &u132->udev[udevs];
3124 int i = ARRAY_SIZE(udev->endp_number_in);
3125 int o = ARRAY_SIZE(udev->endp_number_out);
3126 udev->usb_device = NULL;
3127 udev->udev_number = 0;
3128 udev->usb_addr = 0;
3129 udev->portnumber = 0;
3130 while (i-- > 0) {
3131 udev->endp_number_in[i] = 0;
3132 }
3133 while (o-- > 0) {
3134 udev->endp_number_out[o] = 0;
3135 }
3136 }
3137 while (endps-- > 0) {
3138 u132->endp[endps] = NULL;
3139 }
3140 mutex_unlock(&u132->sw_lock);
3141 return;
3142 }
3143
3144 static int __devinit u132_probe(struct platform_device *pdev)
3145 {
3146 struct usb_hcd *hcd;
3147 int retval;
3148 u32 control;
3149 u32 rh_a = -1;
3150 u32 num_ports;
3151 msleep(100);
3152 if (u132_exiting > 0) {
3153 return -ENODEV;
3154 }
3155 retval = ftdi_write_pcimem(pdev, intrdisable, OHCI_INTR_MIE);
3156 if (retval)
3157 return retval;
3158 retval = ftdi_read_pcimem(pdev, control, &control);
3159 if (retval)
3160 return retval;
3161 retval = ftdi_read_pcimem(pdev, roothub.a, &rh_a);
3162 if (retval)
3163 return retval;
3164 num_ports = rh_a & RH_A_NDP; /* refuse to confuse usbcore */
3165 if (pdev->dev.dma_mask) {
3166 return -EINVAL;
3167 }
3168 hcd = usb_create_hcd(&u132_hc_driver, &pdev->dev, pdev->dev.bus_id);
3169 if (!hcd) {
3170 printk(KERN_ERR "failed to create the usb hcd struct for U132\n"
3171 );
3172 ftdi_elan_gone_away(pdev);
3173 return -ENOMEM;
3174 } else {
3175 int retval = 0;
3176 struct u132 *u132 = hcd_to_u132(hcd);
3177 hcd->rsrc_start = 0;
3178 mutex_lock(&u132_module_lock);
3179 list_add_tail(&u132->u132_list, &u132_static_list);
3180 u132->sequence_num = ++u132_instances;
3181 mutex_unlock(&u132_module_lock);
3182 u132_u132_init_kref(u132);
3183 u132_initialise(u132, pdev);
3184 hcd->product_desc = "ELAN U132 Host Controller";
3185 retval = usb_add_hcd(hcd, 0, 0);
3186 if (retval != 0) {
3187 dev_err(&u132->platform_dev->dev, "init error %d\n",
3188 retval);
3189 u132_u132_put_kref(u132);
3190 return retval;
3191 } else {
3192 u132_monitor_queue_work(u132, 100);
3193 return 0;
3194 }
3195 }
3196 }
3197
3198
3199 #ifdef CONFIG_PM
3200 /* for this device there's no useful distinction between the controller
3201 * and its root hub, except that the root hub only gets direct PM calls
3202 * when CONFIG_USB_SUSPEND is enabled.
3203 */
3204 static int u132_suspend(struct platform_device *pdev, pm_message_t state)
3205 {
3206 struct usb_hcd *hcd = platform_get_drvdata(pdev);
3207 struct u132 *u132 = hcd_to_u132(hcd);
3208 if (u132->going > 1) {
3209 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
3210 , u132->going);
3211 return -ENODEV;
3212 } else if (u132->going > 0) {
3213 dev_err(&u132->platform_dev->dev, "device is being removed\n");
3214 return -ESHUTDOWN;
3215 } else {
3216 int retval = 0;
3217 if (state.event == PM_EVENT_FREEZE) {
3218 retval = u132_bus_suspend(hcd);
3219 } else if (state.event == PM_EVENT_SUSPEND) {
3220 int ports = MAX_U132_PORTS;
3221 while (ports-- > 0) {
3222 port_power(u132, ports, 0);
3223 }
3224 }
3225 if (retval == 0)
3226 pdev->dev.power.power_state = state;
3227 return retval;
3228 }
3229 }
3230
3231 static int u132_resume(struct platform_device *pdev)
3232 {
3233 struct usb_hcd *hcd = platform_get_drvdata(pdev);
3234 struct u132 *u132 = hcd_to_u132(hcd);
3235 if (u132->going > 1) {
3236 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
3237 , u132->going);
3238 return -ENODEV;
3239 } else if (u132->going > 0) {
3240 dev_err(&u132->platform_dev->dev, "device is being removed\n");
3241 return -ESHUTDOWN;
3242 } else {
3243 int retval = 0;
3244 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
3245 int ports = MAX_U132_PORTS;
3246 while (ports-- > 0) {
3247 port_power(u132, ports, 1);
3248 }
3249 retval = 0;
3250 } else {
3251 pdev->dev.power.power_state = PMSG_ON;
3252 retval = u132_bus_resume(hcd);
3253 }
3254 return retval;
3255 }
3256 }
3257
3258 #else
3259 #define u132_suspend NULL
3260 #define u132_resume NULL
3261 #endif
3262 /*
3263 * this driver is loaded explicitly by ftdi_u132
3264 *
3265 * the platform_driver struct is static because it is per type of module
3266 */
3267 static struct platform_driver u132_platform_driver = {
3268 .probe = u132_probe,
3269 .remove = __devexit_p(u132_remove),
3270 .suspend = u132_suspend,
3271 .resume = u132_resume,
3272 .driver = {
3273 .name = (char *)hcd_name,
3274 .owner = THIS_MODULE,
3275 },
3276 };
3277 static int __init u132_hcd_init(void)
3278 {
3279 int retval;
3280 INIT_LIST_HEAD(&u132_static_list);
3281 u132_instances = 0;
3282 u132_exiting = 0;
3283 mutex_init(&u132_module_lock);
3284 if (usb_disabled())
3285 return -ENODEV;
3286 printk(KERN_INFO "driver %s built at %s on %s\n", hcd_name, __TIME__,
3287 __DATE__);
3288 workqueue = create_singlethread_workqueue("u132");
3289 retval = platform_driver_register(&u132_platform_driver);
3290 return retval;
3291 }
3292
3293
3294 module_init(u132_hcd_init);
3295 static void __exit u132_hcd_exit(void)
3296 {
3297 struct u132 *u132;
3298 struct u132 *temp;
3299 mutex_lock(&u132_module_lock);
3300 u132_exiting += 1;
3301 mutex_unlock(&u132_module_lock);
3302 list_for_each_entry_safe(u132, temp, &u132_static_list, u132_list) {
3303 platform_device_unregister(u132->platform_dev);
3304 } platform_driver_unregister(&u132_platform_driver);
3305 printk(KERN_INFO "u132-hcd driver deregistered\n");
3306 wait_event(u132_hcd_wait, u132_instances == 0);
3307 flush_workqueue(workqueue);
3308 destroy_workqueue(workqueue);
3309 }
3310
3311
3312 module_exit(u132_hcd_exit);
3313 MODULE_LICENSE("GPL");
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