Merge tag 'acpi-5.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
[muen/linux.git] / drivers / usb / host / u132-hcd.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Host Controller Driver for the Elan Digital Systems U132 adapter
4 *
5 * Copyright(C) 2006 Elan Digital Systems Limited
6 * http://www.elandigitalsystems.com
7 *
8 * Author and Maintainer - Tony Olech - Elan Digital Systems
9 * tony.olech@elandigitalsystems.com
10 *
11 * This driver was written by Tony Olech(tony.olech@elandigitalsystems.com)
12 * based on various USB host drivers in the 2.6.15 linux kernel
13 * with constant reference to the 3rd Edition of Linux Device Drivers
14 * published by O'Reilly
15 *
16 * The U132 adapter is a USB to CardBus adapter specifically designed
17 * for PC cards that contain an OHCI host controller. Typical PC cards
18 * are the Orange Mobile 3G Option GlobeTrotter Fusion card.
19 *
20 * The U132 adapter will *NOT *work with PC cards that do not contain
21 * an OHCI controller. A simple way to test whether a PC card has an
22 * OHCI controller as an interface is to insert the PC card directly
23 * into a laptop(or desktop) with a CardBus slot and if "lspci" shows
24 * a new USB controller and "lsusb -v" shows a new OHCI Host Controller
25 * then there is a good chance that the U132 adapter will support the
26 * PC card.(you also need the specific client driver for the PC card)
27 *
28 * Please inform the Author and Maintainer about any PC cards that
29 * contain OHCI Host Controller and work when directly connected to
30 * an embedded CardBus slot but do not work when they are connected
31 * via an ELAN U132 adapter.
32 *
33 */
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/moduleparam.h>
37 #include <linux/delay.h>
38 #include <linux/ioport.h>
39 #include <linux/pci_ids.h>
40 #include <linux/sched.h>
41 #include <linux/slab.h>
42 #include <linux/errno.h>
43 #include <linux/init.h>
44 #include <linux/timer.h>
45 #include <linux/list.h>
46 #include <linux/interrupt.h>
47 #include <linux/usb.h>
48 #include <linux/usb/hcd.h>
49 #include <linux/workqueue.h>
50 #include <linux/platform_device.h>
51 #include <linux/mutex.h>
52 #include <asm/io.h>
53 #include <asm/irq.h>
54 #include <asm/byteorder.h>
55
56         /* FIXME ohci.h is ONLY for internal use by the OHCI driver.
57          * If you're going to try stuff like this, you need to split
58          * out shareable stuff (register declarations?) into its own
59          * file, maybe name <linux/usb/ohci.h>
60          */
61
62 #include "ohci.h"
63 #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
64 #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
65         OHCI_INTR_WDH)
66 MODULE_AUTHOR("Tony Olech - Elan Digital Systems Limited");
67 MODULE_DESCRIPTION("U132 USB Host Controller Driver");
68 MODULE_LICENSE("GPL");
69 #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
70 INT_MODULE_PARM(testing, 0);
71 /* Some boards misreport power switching/overcurrent*/
72 static bool distrust_firmware = true;
73 module_param(distrust_firmware, bool, 0);
74 MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurren"
75         "t setup");
76 static DECLARE_WAIT_QUEUE_HEAD(u132_hcd_wait);
77 /*
78 * u132_module_lock exists to protect access to global variables
79 *
80 */
81 static struct mutex u132_module_lock;
82 static int u132_exiting;
83 static int u132_instances;
84 static struct list_head u132_static_list;
85 /*
86 * end of the global variables protected by u132_module_lock
87 */
88 static struct workqueue_struct *workqueue;
89 #define MAX_U132_PORTS 7
90 #define MAX_U132_ADDRS 128
91 #define MAX_U132_UDEVS 4
92 #define MAX_U132_ENDPS 100
93 #define MAX_U132_RINGS 4
94 static const char *cc_to_text[16] = {
95         "No Error ",
96         "CRC Error ",
97         "Bit Stuff ",
98         "Data Togg ",
99         "Stall ",
100         "DevNotResp ",
101         "PIDCheck ",
102         "UnExpPID ",
103         "DataOver ",
104         "DataUnder ",
105         "(for hw) ",
106         "(for hw) ",
107         "BufferOver ",
108         "BuffUnder ",
109         "(for HCD) ",
110         "(for HCD) "
111 };
112 struct u132_port {
113         struct u132 *u132;
114         int reset;
115         int enable;
116         int power;
117         int Status;
118 };
119 struct u132_addr {
120         u8 address;
121 };
122 struct u132_udev {
123         struct kref kref;
124         struct usb_device *usb_device;
125         u8 enumeration;
126         u8 udev_number;
127         u8 usb_addr;
128         u8 portnumber;
129         u8 endp_number_in[16];
130         u8 endp_number_out[16];
131 };
132 #define ENDP_QUEUE_SHIFT 3
133 #define ENDP_QUEUE_SIZE (1<<ENDP_QUEUE_SHIFT)
134 #define ENDP_QUEUE_MASK (ENDP_QUEUE_SIZE-1)
135 struct u132_urbq {
136         struct list_head urb_more;
137         struct urb *urb;
138 };
139 struct u132_spin {
140         spinlock_t slock;
141 };
142 struct u132_endp {
143         struct kref kref;
144         u8 udev_number;
145         u8 endp_number;
146         u8 usb_addr;
147         u8 usb_endp;
148         struct u132 *u132;
149         struct list_head endp_ring;
150         struct u132_ring *ring;
151         unsigned toggle_bits:2;
152         unsigned active:1;
153         unsigned delayed:1;
154         unsigned input:1;
155         unsigned output:1;
156         unsigned pipetype:2;
157         unsigned dequeueing:1;
158         unsigned edset_flush:1;
159         unsigned spare_bits:14;
160         unsigned long jiffies;
161         struct usb_host_endpoint *hep;
162         struct u132_spin queue_lock;
163         u16 queue_size;
164         u16 queue_last;
165         u16 queue_next;
166         struct urb *urb_list[ENDP_QUEUE_SIZE];
167         struct list_head urb_more;
168         struct delayed_work scheduler;
169 };
170 struct u132_ring {
171         unsigned in_use:1;
172         unsigned length:7;
173         u8 number;
174         struct u132 *u132;
175         struct u132_endp *curr_endp;
176         struct delayed_work scheduler;
177 };
178 struct u132 {
179         struct kref kref;
180         struct list_head u132_list;
181         struct mutex sw_lock;
182         struct mutex scheduler_lock;
183         struct u132_platform_data *board;
184         struct platform_device *platform_dev;
185         struct u132_ring ring[MAX_U132_RINGS];
186         int sequence_num;
187         int going;
188         int power;
189         int reset;
190         int num_ports;
191         u32 hc_control;
192         u32 hc_fminterval;
193         u32 hc_roothub_status;
194         u32 hc_roothub_a;
195         u32 hc_roothub_portstatus[MAX_ROOT_PORTS];
196         int flags;
197         unsigned long next_statechange;
198         struct delayed_work monitor;
199         int num_endpoints;
200         struct u132_addr addr[MAX_U132_ADDRS];
201         struct u132_udev udev[MAX_U132_UDEVS];
202         struct u132_port port[MAX_U132_PORTS];
203         struct u132_endp *endp[MAX_U132_ENDPS];
204 };
205
206 /*
207 * these cannot be inlines because we need the structure offset!!
208 * Does anyone have a better way?????
209 */
210 #define ftdi_read_pcimem(pdev, member, data) usb_ftdi_elan_read_pcimem(pdev, \
211         offsetof(struct ohci_regs, member), 0, data);
212 #define ftdi_write_pcimem(pdev, member, data) usb_ftdi_elan_write_pcimem(pdev, \
213         offsetof(struct ohci_regs, member), 0, data);
214 #define u132_read_pcimem(u132, member, data) \
215         usb_ftdi_elan_read_pcimem(u132->platform_dev, offsetof(struct \
216         ohci_regs, member), 0, data);
217 #define u132_write_pcimem(u132, member, data) \
218         usb_ftdi_elan_write_pcimem(u132->platform_dev, offsetof(struct \
219         ohci_regs, member), 0, data);
220 static inline struct u132 *udev_to_u132(struct u132_udev *udev)
221 {
222         u8 udev_number = udev->udev_number;
223         return container_of(udev, struct u132, udev[udev_number]);
224 }
225
226 static inline struct u132 *hcd_to_u132(struct usb_hcd *hcd)
227 {
228         return (struct u132 *)(hcd->hcd_priv);
229 }
230
231 static inline struct usb_hcd *u132_to_hcd(struct u132 *u132)
232 {
233         return container_of((void *)u132, struct usb_hcd, hcd_priv);
234 }
235
236 static inline void u132_disable(struct u132 *u132)
237 {
238         u132_to_hcd(u132)->state = HC_STATE_HALT;
239 }
240
241
242 #define kref_to_u132(d) container_of(d, struct u132, kref)
243 #define kref_to_u132_endp(d) container_of(d, struct u132_endp, kref)
244 #define kref_to_u132_udev(d) container_of(d, struct u132_udev, kref)
245 #include "../misc/usb_u132.h"
246 static const char hcd_name[] = "u132_hcd";
247 #define PORT_C_MASK ((USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE | \
248         USB_PORT_STAT_C_SUSPEND | USB_PORT_STAT_C_OVERCURRENT | \
249         USB_PORT_STAT_C_RESET) << 16)
250 static void u132_hcd_delete(struct kref *kref)
251 {
252         struct u132 *u132 = kref_to_u132(kref);
253         struct platform_device *pdev = u132->platform_dev;
254         struct usb_hcd *hcd = u132_to_hcd(u132);
255         u132->going += 1;
256         mutex_lock(&u132_module_lock);
257         list_del_init(&u132->u132_list);
258         u132_instances -= 1;
259         mutex_unlock(&u132_module_lock);
260         dev_warn(&u132->platform_dev->dev, "FREEING the hcd=%p and thus the u13"
261                 "2=%p going=%d pdev=%p\n", hcd, u132, u132->going, pdev);
262         usb_put_hcd(hcd);
263 }
264
265 static inline void u132_u132_put_kref(struct u132 *u132)
266 {
267         kref_put(&u132->kref, u132_hcd_delete);
268 }
269
270 static inline void u132_u132_init_kref(struct u132 *u132)
271 {
272         kref_init(&u132->kref);
273 }
274
275 static void u132_udev_delete(struct kref *kref)
276 {
277         struct u132_udev *udev = kref_to_u132_udev(kref);
278         udev->udev_number = 0;
279         udev->usb_device = NULL;
280         udev->usb_addr = 0;
281         udev->enumeration = 0;
282 }
283
284 static inline void u132_udev_put_kref(struct u132 *u132, struct u132_udev *udev)
285 {
286         kref_put(&udev->kref, u132_udev_delete);
287 }
288
289 static inline void u132_udev_get_kref(struct u132 *u132, struct u132_udev *udev)
290 {
291         kref_get(&udev->kref);
292 }
293
294 static inline void u132_udev_init_kref(struct u132 *u132,
295         struct u132_udev *udev)
296 {
297         kref_init(&udev->kref);
298 }
299
300 static inline void u132_ring_put_kref(struct u132 *u132, struct u132_ring *ring)
301 {
302         kref_put(&u132->kref, u132_hcd_delete);
303 }
304
305 static void u132_ring_requeue_work(struct u132 *u132, struct u132_ring *ring,
306         unsigned int delta)
307 {
308         if (delta > 0) {
309                 if (queue_delayed_work(workqueue, &ring->scheduler, delta))
310                         return;
311         } else if (queue_delayed_work(workqueue, &ring->scheduler, 0))
312                 return;
313         kref_put(&u132->kref, u132_hcd_delete);
314 }
315
316 static void u132_ring_queue_work(struct u132 *u132, struct u132_ring *ring,
317         unsigned int delta)
318 {
319         kref_get(&u132->kref);
320         u132_ring_requeue_work(u132, ring, delta);
321 }
322
323 static void u132_ring_cancel_work(struct u132 *u132, struct u132_ring *ring)
324 {
325         if (cancel_delayed_work(&ring->scheduler))
326                 kref_put(&u132->kref, u132_hcd_delete);
327 }
328
329 static void u132_endp_delete(struct kref *kref)
330 {
331         struct u132_endp *endp = kref_to_u132_endp(kref);
332         struct u132 *u132 = endp->u132;
333         u8 usb_addr = endp->usb_addr;
334         u8 usb_endp = endp->usb_endp;
335         u8 address = u132->addr[usb_addr].address;
336         struct u132_udev *udev = &u132->udev[address];
337         u8 endp_number = endp->endp_number;
338         struct usb_host_endpoint *hep = endp->hep;
339         struct u132_ring *ring = endp->ring;
340         struct list_head *head = &endp->endp_ring;
341         ring->length -= 1;
342         if (endp == ring->curr_endp) {
343                 if (list_empty(head)) {
344                         ring->curr_endp = NULL;
345                         list_del(head);
346                 } else {
347                         struct u132_endp *next_endp = list_entry(head->next,
348                                 struct u132_endp, endp_ring);
349                         ring->curr_endp = next_endp;
350                         list_del(head);
351                 }
352         } else
353                 list_del(head);
354         if (endp->input) {
355                 udev->endp_number_in[usb_endp] = 0;
356                 u132_udev_put_kref(u132, udev);
357         }
358         if (endp->output) {
359                 udev->endp_number_out[usb_endp] = 0;
360                 u132_udev_put_kref(u132, udev);
361         }
362         u132->endp[endp_number - 1] = NULL;
363         hep->hcpriv = NULL;
364         kfree(endp);
365         u132_u132_put_kref(u132);
366 }
367
368 static inline void u132_endp_put_kref(struct u132 *u132, struct u132_endp *endp)
369 {
370         kref_put(&endp->kref, u132_endp_delete);
371 }
372
373 static inline void u132_endp_get_kref(struct u132 *u132, struct u132_endp *endp)
374 {
375         kref_get(&endp->kref);
376 }
377
378 static inline void u132_endp_init_kref(struct u132 *u132,
379         struct u132_endp *endp)
380 {
381         kref_init(&endp->kref);
382         kref_get(&u132->kref);
383 }
384
385 static void u132_endp_queue_work(struct u132 *u132, struct u132_endp *endp,
386         unsigned int delta)
387 {
388         if (queue_delayed_work(workqueue, &endp->scheduler, delta))
389                 kref_get(&endp->kref);
390 }
391
392 static void u132_endp_cancel_work(struct u132 *u132, struct u132_endp *endp)
393 {
394         if (cancel_delayed_work(&endp->scheduler))
395                 kref_put(&endp->kref, u132_endp_delete);
396 }
397
398 static inline void u132_monitor_put_kref(struct u132 *u132)
399 {
400         kref_put(&u132->kref, u132_hcd_delete);
401 }
402
403 static void u132_monitor_queue_work(struct u132 *u132, unsigned int delta)
404 {
405         if (queue_delayed_work(workqueue, &u132->monitor, delta))
406                 kref_get(&u132->kref);
407 }
408
409 static void u132_monitor_requeue_work(struct u132 *u132, unsigned int delta)
410 {
411         if (!queue_delayed_work(workqueue, &u132->monitor, delta))
412                 kref_put(&u132->kref, u132_hcd_delete);
413 }
414
415 static void u132_monitor_cancel_work(struct u132 *u132)
416 {
417         if (cancel_delayed_work(&u132->monitor))
418                 kref_put(&u132->kref, u132_hcd_delete);
419 }
420
421 static int read_roothub_info(struct u132 *u132)
422 {
423         u32 revision;
424         int retval;
425         retval = u132_read_pcimem(u132, revision, &revision);
426         if (retval) {
427                 dev_err(&u132->platform_dev->dev, "error %d accessing device co"
428                         "ntrol\n", retval);
429                 return retval;
430         } else if ((revision & 0xFF) == 0x10) {
431         } else if ((revision & 0xFF) == 0x11) {
432         } else {
433                 dev_err(&u132->platform_dev->dev, "device revision is not valid"
434                         " %08X\n", revision);
435                 return -ENODEV;
436         }
437         retval = u132_read_pcimem(u132, control, &u132->hc_control);
438         if (retval) {
439                 dev_err(&u132->platform_dev->dev, "error %d accessing device co"
440                         "ntrol\n", retval);
441                 return retval;
442         }
443         retval = u132_read_pcimem(u132, roothub.status,
444                 &u132->hc_roothub_status);
445         if (retval) {
446                 dev_err(&u132->platform_dev->dev, "error %d accessing device re"
447                         "g roothub.status\n", retval);
448                 return retval;
449         }
450         retval = u132_read_pcimem(u132, roothub.a, &u132->hc_roothub_a);
451         if (retval) {
452                 dev_err(&u132->platform_dev->dev, "error %d accessing device re"
453                         "g roothub.a\n", retval);
454                 return retval;
455         }
456         {
457                 int I = u132->num_ports;
458                 int i = 0;
459                 while (I-- > 0) {
460                         retval = u132_read_pcimem(u132, roothub.portstatus[i],
461                                 &u132->hc_roothub_portstatus[i]);
462                         if (retval) {
463                                 dev_err(&u132->platform_dev->dev, "error %d acc"
464                                         "essing device roothub.portstatus[%d]\n"
465                                         , retval, i);
466                                 return retval;
467                         } else
468                                 i += 1;
469                 }
470         }
471         return 0;
472 }
473
474 static void u132_hcd_monitor_work(struct work_struct *work)
475 {
476         struct u132 *u132 = container_of(work, struct u132, monitor.work);
477         if (u132->going > 1) {
478                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
479                         , u132->going);
480                 u132_monitor_put_kref(u132);
481                 return;
482         } else if (u132->going > 0) {
483                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
484                 u132_monitor_put_kref(u132);
485                 return;
486         } else {
487                 int retval;
488                 mutex_lock(&u132->sw_lock);
489                 retval = read_roothub_info(u132);
490                 if (retval) {
491                         struct usb_hcd *hcd = u132_to_hcd(u132);
492                         u132_disable(u132);
493                         u132->going = 1;
494                         mutex_unlock(&u132->sw_lock);
495                         usb_hc_died(hcd);
496                         ftdi_elan_gone_away(u132->platform_dev);
497                         u132_monitor_put_kref(u132);
498                         return;
499                 } else {
500                         u132_monitor_requeue_work(u132, 500);
501                         mutex_unlock(&u132->sw_lock);
502                         return;
503                 }
504         }
505 }
506
507 static void u132_hcd_giveback_urb(struct u132 *u132, struct u132_endp *endp,
508         struct urb *urb, int status)
509 {
510         struct u132_ring *ring;
511         unsigned long irqs;
512         struct usb_hcd *hcd = u132_to_hcd(u132);
513         urb->error_count = 0;
514         spin_lock_irqsave(&endp->queue_lock.slock, irqs);
515         usb_hcd_unlink_urb_from_ep(hcd, urb);
516         endp->queue_next += 1;
517         if (ENDP_QUEUE_SIZE > --endp->queue_size) {
518                 endp->active = 0;
519                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
520         } else {
521                 struct list_head *next = endp->urb_more.next;
522                 struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
523                         urb_more);
524                 list_del(next);
525                 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
526                         urbq->urb;
527                 endp->active = 0;
528                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
529                 kfree(urbq);
530         }
531         mutex_lock(&u132->scheduler_lock);
532         ring = endp->ring;
533         ring->in_use = 0;
534         u132_ring_cancel_work(u132, ring);
535         u132_ring_queue_work(u132, ring, 0);
536         mutex_unlock(&u132->scheduler_lock);
537         u132_endp_put_kref(u132, endp);
538         usb_hcd_giveback_urb(hcd, urb, status);
539 }
540
541 static void u132_hcd_forget_urb(struct u132 *u132, struct u132_endp *endp,
542         struct urb *urb, int status)
543 {
544         u132_endp_put_kref(u132, endp);
545 }
546
547 static void u132_hcd_abandon_urb(struct u132 *u132, struct u132_endp *endp,
548         struct urb *urb, int status)
549 {
550         unsigned long irqs;
551         struct usb_hcd *hcd = u132_to_hcd(u132);
552         urb->error_count = 0;
553         spin_lock_irqsave(&endp->queue_lock.slock, irqs);
554         usb_hcd_unlink_urb_from_ep(hcd, urb);
555         endp->queue_next += 1;
556         if (ENDP_QUEUE_SIZE > --endp->queue_size) {
557                 endp->active = 0;
558                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
559         } else {
560                 struct list_head *next = endp->urb_more.next;
561                 struct u132_urbq *urbq = list_entry(next, struct u132_urbq,
562                         urb_more);
563                 list_del(next);
564                 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
565                         urbq->urb;
566                 endp->active = 0;
567                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
568                 kfree(urbq);
569         }
570         usb_hcd_giveback_urb(hcd, urb, status);
571 }
572
573 static inline int edset_input(struct u132 *u132, struct u132_ring *ring,
574         struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
575         void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
576         int toggle_bits, int error_count, int condition_code, int repeat_number,
577          int halted, int skipped, int actual, int non_null))
578 {
579         return usb_ftdi_elan_edset_input(u132->platform_dev, ring->number, endp,
580                  urb, address, endp->usb_endp, toggle_bits, callback);
581 }
582
583 static inline int edset_setup(struct u132 *u132, struct u132_ring *ring,
584         struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
585         void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
586         int toggle_bits, int error_count, int condition_code, int repeat_number,
587          int halted, int skipped, int actual, int non_null))
588 {
589         return usb_ftdi_elan_edset_setup(u132->platform_dev, ring->number, endp,
590                  urb, address, endp->usb_endp, toggle_bits, callback);
591 }
592
593 static inline int edset_single(struct u132 *u132, struct u132_ring *ring,
594         struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
595         void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
596         int toggle_bits, int error_count, int condition_code, int repeat_number,
597          int halted, int skipped, int actual, int non_null))
598 {
599         return usb_ftdi_elan_edset_single(u132->platform_dev, ring->number,
600                 endp, urb, address, endp->usb_endp, toggle_bits, callback);
601 }
602
603 static inline int edset_output(struct u132 *u132, struct u132_ring *ring,
604         struct u132_endp *endp, struct urb *urb, u8 address, u8 toggle_bits,
605         void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
606         int toggle_bits, int error_count, int condition_code, int repeat_number,
607          int halted, int skipped, int actual, int non_null))
608 {
609         return usb_ftdi_elan_edset_output(u132->platform_dev, ring->number,
610                 endp, urb, address, endp->usb_endp, toggle_bits, callback);
611 }
612
613
614 /*
615 * must not LOCK sw_lock
616 *
617 */
618 static void u132_hcd_interrupt_recv(void *data, struct urb *urb, u8 *buf,
619         int len, int toggle_bits, int error_count, int condition_code,
620         int repeat_number, int halted, int skipped, int actual, int non_null)
621 {
622         struct u132_endp *endp = data;
623         struct u132 *u132 = endp->u132;
624         u8 address = u132->addr[endp->usb_addr].address;
625         struct u132_udev *udev = &u132->udev[address];
626         mutex_lock(&u132->scheduler_lock);
627         if (u132->going > 1) {
628                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
629                         , u132->going);
630                 mutex_unlock(&u132->scheduler_lock);
631                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
632                 return;
633         } else if (endp->dequeueing) {
634                 endp->dequeueing = 0;
635                 mutex_unlock(&u132->scheduler_lock);
636                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
637                 return;
638         } else if (u132->going > 0) {
639                 dev_err(&u132->platform_dev->dev, "device is being removed "
640                                 "urb=%p\n", urb);
641                 mutex_unlock(&u132->scheduler_lock);
642                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
643                 return;
644         } else if (!urb->unlinked) {
645                 struct u132_ring *ring = endp->ring;
646                 u8 *u = urb->transfer_buffer + urb->actual_length;
647                 u8 *b = buf;
648                 int L = len;
649
650                 while (L-- > 0)
651                         *u++ = *b++;
652
653                 urb->actual_length += len;
654                 if ((condition_code == TD_CC_NOERROR) &&
655                         (urb->transfer_buffer_length > urb->actual_length)) {
656                         endp->toggle_bits = toggle_bits;
657                         usb_settoggle(udev->usb_device, endp->usb_endp, 0,
658                                 1 & toggle_bits);
659                         if (urb->actual_length > 0) {
660                                 int retval;
661                                 mutex_unlock(&u132->scheduler_lock);
662                                 retval = edset_single(u132, ring, endp, urb,
663                                         address, endp->toggle_bits,
664                                         u132_hcd_interrupt_recv);
665                                 if (retval != 0)
666                                         u132_hcd_giveback_urb(u132, endp, urb,
667                                                 retval);
668                         } else {
669                                 ring->in_use = 0;
670                                 endp->active = 0;
671                                 endp->jiffies = jiffies +
672                                         msecs_to_jiffies(urb->interval);
673                                 u132_ring_cancel_work(u132, ring);
674                                 u132_ring_queue_work(u132, ring, 0);
675                                 mutex_unlock(&u132->scheduler_lock);
676                                 u132_endp_put_kref(u132, endp);
677                         }
678                         return;
679                 } else if ((condition_code == TD_DATAUNDERRUN) &&
680                         ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
681                         endp->toggle_bits = toggle_bits;
682                         usb_settoggle(udev->usb_device, endp->usb_endp, 0,
683                                 1 & toggle_bits);
684                         mutex_unlock(&u132->scheduler_lock);
685                         u132_hcd_giveback_urb(u132, endp, urb, 0);
686                         return;
687                 } else {
688                         if (condition_code == TD_CC_NOERROR) {
689                                 endp->toggle_bits = toggle_bits;
690                                 usb_settoggle(udev->usb_device, endp->usb_endp,
691                                         0, 1 & toggle_bits);
692                         } else if (condition_code == TD_CC_STALL) {
693                                 endp->toggle_bits = 0x2;
694                                 usb_settoggle(udev->usb_device, endp->usb_endp,
695                                         0, 0);
696                         } else {
697                                 endp->toggle_bits = 0x2;
698                                 usb_settoggle(udev->usb_device, endp->usb_endp,
699                                         0, 0);
700                                 dev_err(&u132->platform_dev->dev, "urb=%p givin"
701                                         "g back INTERRUPT %s\n", urb,
702                                         cc_to_text[condition_code]);
703                         }
704                         mutex_unlock(&u132->scheduler_lock);
705                         u132_hcd_giveback_urb(u132, endp, urb,
706                                 cc_to_error[condition_code]);
707                         return;
708                 }
709         } else {
710                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
711                                 "unlinked=%d\n", urb, urb->unlinked);
712                 mutex_unlock(&u132->scheduler_lock);
713                 u132_hcd_giveback_urb(u132, endp, urb, 0);
714                 return;
715         }
716 }
717
718 static void u132_hcd_bulk_output_sent(void *data, struct urb *urb, u8 *buf,
719         int len, int toggle_bits, int error_count, int condition_code,
720         int repeat_number, int halted, int skipped, int actual, int non_null)
721 {
722         struct u132_endp *endp = data;
723         struct u132 *u132 = endp->u132;
724         u8 address = u132->addr[endp->usb_addr].address;
725         mutex_lock(&u132->scheduler_lock);
726         if (u132->going > 1) {
727                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
728                         , u132->going);
729                 mutex_unlock(&u132->scheduler_lock);
730                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
731                 return;
732         } else if (endp->dequeueing) {
733                 endp->dequeueing = 0;
734                 mutex_unlock(&u132->scheduler_lock);
735                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
736                 return;
737         } else if (u132->going > 0) {
738                 dev_err(&u132->platform_dev->dev, "device is being removed "
739                                 "urb=%p\n", urb);
740                 mutex_unlock(&u132->scheduler_lock);
741                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
742                 return;
743         } else if (!urb->unlinked) {
744                 struct u132_ring *ring = endp->ring;
745                 urb->actual_length += len;
746                 endp->toggle_bits = toggle_bits;
747                 if (urb->transfer_buffer_length > urb->actual_length) {
748                         int retval;
749                         mutex_unlock(&u132->scheduler_lock);
750                         retval = edset_output(u132, ring, endp, urb, address,
751                                 endp->toggle_bits, u132_hcd_bulk_output_sent);
752                         if (retval != 0)
753                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
754                         return;
755                 } else {
756                         mutex_unlock(&u132->scheduler_lock);
757                         u132_hcd_giveback_urb(u132, endp, urb, 0);
758                         return;
759                 }
760         } else {
761                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
762                                 "unlinked=%d\n", urb, urb->unlinked);
763                 mutex_unlock(&u132->scheduler_lock);
764                 u132_hcd_giveback_urb(u132, endp, urb, 0);
765                 return;
766         }
767 }
768
769 static void u132_hcd_bulk_input_recv(void *data, struct urb *urb, u8 *buf,
770         int len, int toggle_bits, int error_count, int condition_code,
771         int repeat_number, int halted, int skipped, int actual, int non_null)
772 {
773         struct u132_endp *endp = data;
774         struct u132 *u132 = endp->u132;
775         u8 address = u132->addr[endp->usb_addr].address;
776         struct u132_udev *udev = &u132->udev[address];
777         mutex_lock(&u132->scheduler_lock);
778         if (u132->going > 1) {
779                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
780                         , u132->going);
781                 mutex_unlock(&u132->scheduler_lock);
782                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
783                 return;
784         } else if (endp->dequeueing) {
785                 endp->dequeueing = 0;
786                 mutex_unlock(&u132->scheduler_lock);
787                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
788                 return;
789         } else if (u132->going > 0) {
790                 dev_err(&u132->platform_dev->dev, "device is being removed "
791                                 "urb=%p\n", urb);
792                 mutex_unlock(&u132->scheduler_lock);
793                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
794                 return;
795         } else if (!urb->unlinked) {
796                 struct u132_ring *ring = endp->ring;
797                 u8 *u = urb->transfer_buffer + urb->actual_length;
798                 u8 *b = buf;
799                 int L = len;
800
801                 while (L-- > 0)
802                         *u++ = *b++;
803
804                 urb->actual_length += len;
805                 if ((condition_code == TD_CC_NOERROR) &&
806                         (urb->transfer_buffer_length > urb->actual_length)) {
807                         int retval;
808                         endp->toggle_bits = toggle_bits;
809                         usb_settoggle(udev->usb_device, endp->usb_endp, 0,
810                                 1 & toggle_bits);
811                         mutex_unlock(&u132->scheduler_lock);
812                         retval = usb_ftdi_elan_edset_input(u132->platform_dev,
813                                 ring->number, endp, urb, address,
814                                 endp->usb_endp, endp->toggle_bits,
815                                 u132_hcd_bulk_input_recv);
816                         if (retval != 0)
817                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
818                         return;
819                 } else if (condition_code == TD_CC_NOERROR) {
820                         endp->toggle_bits = toggle_bits;
821                         usb_settoggle(udev->usb_device, endp->usb_endp, 0,
822                                 1 & toggle_bits);
823                         mutex_unlock(&u132->scheduler_lock);
824                         u132_hcd_giveback_urb(u132, endp, urb,
825                                 cc_to_error[condition_code]);
826                         return;
827                 } else if ((condition_code == TD_DATAUNDERRUN) &&
828                         ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0)) {
829                         endp->toggle_bits = toggle_bits;
830                         usb_settoggle(udev->usb_device, endp->usb_endp, 0,
831                                 1 & toggle_bits);
832                         mutex_unlock(&u132->scheduler_lock);
833                         u132_hcd_giveback_urb(u132, endp, urb, 0);
834                         return;
835                 } else if (condition_code == TD_DATAUNDERRUN) {
836                         endp->toggle_bits = toggle_bits;
837                         usb_settoggle(udev->usb_device, endp->usb_endp, 0,
838                                 1 & toggle_bits);
839                         dev_warn(&u132->platform_dev->dev, "urb=%p(SHORT NOT OK"
840                                 ") giving back BULK IN %s\n", urb,
841                                 cc_to_text[condition_code]);
842                         mutex_unlock(&u132->scheduler_lock);
843                         u132_hcd_giveback_urb(u132, endp, urb, 0);
844                         return;
845                 } else if (condition_code == TD_CC_STALL) {
846                         endp->toggle_bits = 0x2;
847                         usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
848                         mutex_unlock(&u132->scheduler_lock);
849                         u132_hcd_giveback_urb(u132, endp, urb,
850                                 cc_to_error[condition_code]);
851                         return;
852                 } else {
853                         endp->toggle_bits = 0x2;
854                         usb_settoggle(udev->usb_device, endp->usb_endp, 0, 0);
855                         dev_err(&u132->platform_dev->dev, "urb=%p giving back B"
856                                 "ULK IN code=%d %s\n", urb, condition_code,
857                                 cc_to_text[condition_code]);
858                         mutex_unlock(&u132->scheduler_lock);
859                         u132_hcd_giveback_urb(u132, endp, urb,
860                                 cc_to_error[condition_code]);
861                         return;
862                 }
863         } else {
864                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
865                                 "unlinked=%d\n", urb, urb->unlinked);
866                 mutex_unlock(&u132->scheduler_lock);
867                 u132_hcd_giveback_urb(u132, endp, urb, 0);
868                 return;
869         }
870 }
871
872 static void u132_hcd_configure_empty_sent(void *data, struct urb *urb, u8 *buf,
873         int len, int toggle_bits, int error_count, int condition_code,
874         int repeat_number, int halted, int skipped, int actual, int non_null)
875 {
876         struct u132_endp *endp = data;
877         struct u132 *u132 = endp->u132;
878         mutex_lock(&u132->scheduler_lock);
879         if (u132->going > 1) {
880                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
881                         , u132->going);
882                 mutex_unlock(&u132->scheduler_lock);
883                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
884                 return;
885         } else if (endp->dequeueing) {
886                 endp->dequeueing = 0;
887                 mutex_unlock(&u132->scheduler_lock);
888                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
889                 return;
890         } else if (u132->going > 0) {
891                 dev_err(&u132->platform_dev->dev, "device is being removed "
892                                 "urb=%p\n", urb);
893                 mutex_unlock(&u132->scheduler_lock);
894                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
895                 return;
896         } else if (!urb->unlinked) {
897                 mutex_unlock(&u132->scheduler_lock);
898                 u132_hcd_giveback_urb(u132, endp, urb, 0);
899                 return;
900         } else {
901                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
902                                 "unlinked=%d\n", urb, urb->unlinked);
903                 mutex_unlock(&u132->scheduler_lock);
904                 u132_hcd_giveback_urb(u132, endp, urb, 0);
905                 return;
906         }
907 }
908
909 static void u132_hcd_configure_input_recv(void *data, struct urb *urb, u8 *buf,
910         int len, int toggle_bits, int error_count, int condition_code,
911         int repeat_number, int halted, int skipped, int actual, int non_null)
912 {
913         struct u132_endp *endp = data;
914         struct u132 *u132 = endp->u132;
915         u8 address = u132->addr[endp->usb_addr].address;
916         mutex_lock(&u132->scheduler_lock);
917         if (u132->going > 1) {
918                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
919                         , u132->going);
920                 mutex_unlock(&u132->scheduler_lock);
921                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
922                 return;
923         } else if (endp->dequeueing) {
924                 endp->dequeueing = 0;
925                 mutex_unlock(&u132->scheduler_lock);
926                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
927                 return;
928         } else if (u132->going > 0) {
929                 dev_err(&u132->platform_dev->dev, "device is being removed "
930                                 "urb=%p\n", urb);
931                 mutex_unlock(&u132->scheduler_lock);
932                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
933                 return;
934         } else if (!urb->unlinked) {
935                 struct u132_ring *ring = endp->ring;
936                 u8 *u = urb->transfer_buffer;
937                 u8 *b = buf;
938                 int L = len;
939
940                 while (L-- > 0)
941                         *u++ = *b++;
942
943                 urb->actual_length = len;
944                 if ((condition_code == TD_CC_NOERROR) || ((condition_code ==
945                         TD_DATAUNDERRUN) && ((urb->transfer_flags &
946                         URB_SHORT_NOT_OK) == 0))) {
947                         int retval;
948                         mutex_unlock(&u132->scheduler_lock);
949                         retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
950                                 ring->number, endp, urb, address,
951                                 endp->usb_endp, 0x3,
952                                 u132_hcd_configure_empty_sent);
953                         if (retval != 0)
954                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
955                         return;
956                 } else if (condition_code == TD_CC_STALL) {
957                         mutex_unlock(&u132->scheduler_lock);
958                         dev_warn(&u132->platform_dev->dev, "giving back SETUP I"
959                                 "NPUT STALL urb %p\n", urb);
960                         u132_hcd_giveback_urb(u132, endp, urb,
961                                 cc_to_error[condition_code]);
962                         return;
963                 } else {
964                         mutex_unlock(&u132->scheduler_lock);
965                         dev_err(&u132->platform_dev->dev, "giving back SETUP IN"
966                                 "PUT %s urb %p\n", cc_to_text[condition_code],
967                                 urb);
968                         u132_hcd_giveback_urb(u132, endp, urb,
969                                 cc_to_error[condition_code]);
970                         return;
971                 }
972         } else {
973                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
974                                 "unlinked=%d\n", urb, urb->unlinked);
975                 mutex_unlock(&u132->scheduler_lock);
976                 u132_hcd_giveback_urb(u132, endp, urb, 0);
977                 return;
978         }
979 }
980
981 static void u132_hcd_configure_empty_recv(void *data, struct urb *urb, u8 *buf,
982         int len, int toggle_bits, int error_count, int condition_code,
983         int repeat_number, int halted, int skipped, int actual, int non_null)
984 {
985         struct u132_endp *endp = data;
986         struct u132 *u132 = endp->u132;
987         mutex_lock(&u132->scheduler_lock);
988         if (u132->going > 1) {
989                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
990                         , u132->going);
991                 mutex_unlock(&u132->scheduler_lock);
992                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
993                 return;
994         } else if (endp->dequeueing) {
995                 endp->dequeueing = 0;
996                 mutex_unlock(&u132->scheduler_lock);
997                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
998                 return;
999         } else if (u132->going > 0) {
1000                 dev_err(&u132->platform_dev->dev, "device is being removed "
1001                                 "urb=%p\n", urb);
1002                 mutex_unlock(&u132->scheduler_lock);
1003                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1004                 return;
1005         } else if (!urb->unlinked) {
1006                 mutex_unlock(&u132->scheduler_lock);
1007                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1008                 return;
1009         } else {
1010                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1011                                 "unlinked=%d\n", urb, urb->unlinked);
1012                 mutex_unlock(&u132->scheduler_lock);
1013                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1014                 return;
1015         }
1016 }
1017
1018 static void u132_hcd_configure_setup_sent(void *data, struct urb *urb, u8 *buf,
1019         int len, int toggle_bits, int error_count, int condition_code,
1020         int repeat_number, int halted, int skipped, int actual, int non_null)
1021 {
1022         struct u132_endp *endp = data;
1023         struct u132 *u132 = endp->u132;
1024         u8 address = u132->addr[endp->usb_addr].address;
1025         mutex_lock(&u132->scheduler_lock);
1026         if (u132->going > 1) {
1027                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1028                         , u132->going);
1029                 mutex_unlock(&u132->scheduler_lock);
1030                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1031                 return;
1032         } else if (endp->dequeueing) {
1033                 endp->dequeueing = 0;
1034                 mutex_unlock(&u132->scheduler_lock);
1035                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1036                 return;
1037         } else if (u132->going > 0) {
1038                 dev_err(&u132->platform_dev->dev, "device is being removed "
1039                                 "urb=%p\n", urb);
1040                 mutex_unlock(&u132->scheduler_lock);
1041                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1042                 return;
1043         } else if (!urb->unlinked) {
1044                 if (usb_pipein(urb->pipe)) {
1045                         int retval;
1046                         struct u132_ring *ring = endp->ring;
1047                         mutex_unlock(&u132->scheduler_lock);
1048                         retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1049                                 ring->number, endp, urb, address,
1050                                 endp->usb_endp, 0,
1051                                 u132_hcd_configure_input_recv);
1052                         if (retval != 0)
1053                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
1054                         return;
1055                 } else {
1056                         int retval;
1057                         struct u132_ring *ring = endp->ring;
1058                         mutex_unlock(&u132->scheduler_lock);
1059                         retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1060                                 ring->number, endp, urb, address,
1061                                 endp->usb_endp, 0,
1062                                 u132_hcd_configure_empty_recv);
1063                         if (retval != 0)
1064                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
1065                         return;
1066                 }
1067         } else {
1068                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1069                                 "unlinked=%d\n", urb, urb->unlinked);
1070                 mutex_unlock(&u132->scheduler_lock);
1071                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1072                 return;
1073         }
1074 }
1075
1076 static void u132_hcd_enumeration_empty_recv(void *data, struct urb *urb,
1077         u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
1078         int repeat_number, int halted, int skipped, int actual, int non_null)
1079 {
1080         struct u132_endp *endp = data;
1081         struct u132 *u132 = endp->u132;
1082         u8 address = u132->addr[endp->usb_addr].address;
1083         struct u132_udev *udev = &u132->udev[address];
1084         mutex_lock(&u132->scheduler_lock);
1085         if (u132->going > 1) {
1086                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1087                         , u132->going);
1088                 mutex_unlock(&u132->scheduler_lock);
1089                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1090                 return;
1091         } else if (endp->dequeueing) {
1092                 endp->dequeueing = 0;
1093                 mutex_unlock(&u132->scheduler_lock);
1094                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1095                 return;
1096         } else if (u132->going > 0) {
1097                 dev_err(&u132->platform_dev->dev, "device is being removed "
1098                                 "urb=%p\n", urb);
1099                 mutex_unlock(&u132->scheduler_lock);
1100                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1101                 return;
1102         } else if (!urb->unlinked) {
1103                 u132->addr[0].address = 0;
1104                 endp->usb_addr = udev->usb_addr;
1105                 mutex_unlock(&u132->scheduler_lock);
1106                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1107                 return;
1108         } else {
1109                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1110                                 "unlinked=%d\n", urb, urb->unlinked);
1111                 mutex_unlock(&u132->scheduler_lock);
1112                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1113                 return;
1114         }
1115 }
1116
1117 static void u132_hcd_enumeration_address_sent(void *data, struct urb *urb,
1118         u8 *buf, int len, int toggle_bits, int error_count, int condition_code,
1119         int repeat_number, int halted, int skipped, int actual, int non_null)
1120 {
1121         struct u132_endp *endp = data;
1122         struct u132 *u132 = endp->u132;
1123         mutex_lock(&u132->scheduler_lock);
1124         if (u132->going > 1) {
1125                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1126                         , u132->going);
1127                 mutex_unlock(&u132->scheduler_lock);
1128                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1129                 return;
1130         } else if (endp->dequeueing) {
1131                 endp->dequeueing = 0;
1132                 mutex_unlock(&u132->scheduler_lock);
1133                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1134                 return;
1135         } else if (u132->going > 0) {
1136                 dev_err(&u132->platform_dev->dev, "device is being removed "
1137                                 "urb=%p\n", urb);
1138                 mutex_unlock(&u132->scheduler_lock);
1139                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1140                 return;
1141         } else if (!urb->unlinked) {
1142                 int retval;
1143                 struct u132_ring *ring = endp->ring;
1144                 mutex_unlock(&u132->scheduler_lock);
1145                 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1146                         ring->number, endp, urb, 0, endp->usb_endp, 0,
1147                         u132_hcd_enumeration_empty_recv);
1148                 if (retval != 0)
1149                         u132_hcd_giveback_urb(u132, endp, urb, retval);
1150                 return;
1151         } else {
1152                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1153                                 "unlinked=%d\n", urb, urb->unlinked);
1154                 mutex_unlock(&u132->scheduler_lock);
1155                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1156                 return;
1157         }
1158 }
1159
1160 static void u132_hcd_initial_empty_sent(void *data, struct urb *urb, u8 *buf,
1161         int len, int toggle_bits, int error_count, int condition_code,
1162         int repeat_number, int halted, int skipped, int actual, int non_null)
1163 {
1164         struct u132_endp *endp = data;
1165         struct u132 *u132 = endp->u132;
1166         mutex_lock(&u132->scheduler_lock);
1167         if (u132->going > 1) {
1168                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1169                         , u132->going);
1170                 mutex_unlock(&u132->scheduler_lock);
1171                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1172                 return;
1173         } else if (endp->dequeueing) {
1174                 endp->dequeueing = 0;
1175                 mutex_unlock(&u132->scheduler_lock);
1176                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1177                 return;
1178         } else if (u132->going > 0) {
1179                 dev_err(&u132->platform_dev->dev, "device is being removed "
1180                                 "urb=%p\n", urb);
1181                 mutex_unlock(&u132->scheduler_lock);
1182                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1183                 return;
1184         } else if (!urb->unlinked) {
1185                 mutex_unlock(&u132->scheduler_lock);
1186                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1187                 return;
1188         } else {
1189                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1190                                 "unlinked=%d\n", urb, urb->unlinked);
1191                 mutex_unlock(&u132->scheduler_lock);
1192                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1193                 return;
1194         }
1195 }
1196
1197 static void u132_hcd_initial_input_recv(void *data, struct urb *urb, u8 *buf,
1198         int len, int toggle_bits, int error_count, int condition_code,
1199         int repeat_number, int halted, int skipped, int actual, int non_null)
1200 {
1201         struct u132_endp *endp = data;
1202         struct u132 *u132 = endp->u132;
1203         u8 address = u132->addr[endp->usb_addr].address;
1204         mutex_lock(&u132->scheduler_lock);
1205         if (u132->going > 1) {
1206                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1207                         , u132->going);
1208                 mutex_unlock(&u132->scheduler_lock);
1209                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1210                 return;
1211         } else if (endp->dequeueing) {
1212                 endp->dequeueing = 0;
1213                 mutex_unlock(&u132->scheduler_lock);
1214                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1215                 return;
1216         } else if (u132->going > 0) {
1217                 dev_err(&u132->platform_dev->dev, "device is being removed "
1218                                 "urb=%p\n", urb);
1219                 mutex_unlock(&u132->scheduler_lock);
1220                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1221                 return;
1222         } else if (!urb->unlinked) {
1223                 int retval;
1224                 struct u132_ring *ring = endp->ring;
1225                 u8 *u = urb->transfer_buffer;
1226                 u8 *b = buf;
1227                 int L = len;
1228
1229                 while (L-- > 0)
1230                         *u++ = *b++;
1231
1232                 urb->actual_length = len;
1233                 mutex_unlock(&u132->scheduler_lock);
1234                 retval = usb_ftdi_elan_edset_empty(u132->platform_dev,
1235                         ring->number, endp, urb, address, endp->usb_endp, 0x3,
1236                         u132_hcd_initial_empty_sent);
1237                 if (retval != 0)
1238                         u132_hcd_giveback_urb(u132, endp, urb, retval);
1239                 return;
1240         } else {
1241                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1242                                 "unlinked=%d\n", urb, urb->unlinked);
1243                 mutex_unlock(&u132->scheduler_lock);
1244                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1245                 return;
1246         }
1247 }
1248
1249 static void u132_hcd_initial_setup_sent(void *data, struct urb *urb, u8 *buf,
1250         int len, int toggle_bits, int error_count, int condition_code,
1251         int repeat_number, int halted, int skipped, int actual, int non_null)
1252 {
1253         struct u132_endp *endp = data;
1254         struct u132 *u132 = endp->u132;
1255         u8 address = u132->addr[endp->usb_addr].address;
1256         mutex_lock(&u132->scheduler_lock);
1257         if (u132->going > 1) {
1258                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1259                         , u132->going);
1260                 mutex_unlock(&u132->scheduler_lock);
1261                 u132_hcd_forget_urb(u132, endp, urb, -ENODEV);
1262                 return;
1263         } else if (endp->dequeueing) {
1264                 endp->dequeueing = 0;
1265                 mutex_unlock(&u132->scheduler_lock);
1266                 u132_hcd_giveback_urb(u132, endp, urb, -EINTR);
1267                 return;
1268         } else if (u132->going > 0) {
1269                 dev_err(&u132->platform_dev->dev, "device is being removed "
1270                                 "urb=%p\n", urb);
1271                 mutex_unlock(&u132->scheduler_lock);
1272                 u132_hcd_giveback_urb(u132, endp, urb, -ENODEV);
1273                 return;
1274         } else if (!urb->unlinked) {
1275                 int retval;
1276                 struct u132_ring *ring = endp->ring;
1277                 mutex_unlock(&u132->scheduler_lock);
1278                 retval = usb_ftdi_elan_edset_input(u132->platform_dev,
1279                         ring->number, endp, urb, address, endp->usb_endp, 0,
1280                         u132_hcd_initial_input_recv);
1281                 if (retval != 0)
1282                         u132_hcd_giveback_urb(u132, endp, urb, retval);
1283                 return;
1284         } else {
1285                 dev_err(&u132->platform_dev->dev, "CALLBACK called urb=%p "
1286                                 "unlinked=%d\n", urb, urb->unlinked);
1287                 mutex_unlock(&u132->scheduler_lock);
1288                 u132_hcd_giveback_urb(u132, endp, urb, 0);
1289                 return;
1290         }
1291 }
1292
1293 /*
1294 * this work function is only executed from the work queue
1295 *
1296 */
1297 static void u132_hcd_ring_work_scheduler(struct work_struct *work)
1298 {
1299         struct u132_ring *ring =
1300                 container_of(work, struct u132_ring, scheduler.work);
1301         struct u132 *u132 = ring->u132;
1302         mutex_lock(&u132->scheduler_lock);
1303         if (ring->in_use) {
1304                 mutex_unlock(&u132->scheduler_lock);
1305                 u132_ring_put_kref(u132, ring);
1306                 return;
1307         } else if (ring->curr_endp) {
1308                 struct u132_endp *endp, *last_endp = ring->curr_endp;
1309                 unsigned long wakeup = 0;
1310                 list_for_each_entry(endp, &last_endp->endp_ring, endp_ring) {
1311                         if (endp->queue_next == endp->queue_last) {
1312                         } else if ((endp->delayed == 0)
1313                                 || time_after_eq(jiffies, endp->jiffies)) {
1314                                 ring->curr_endp = endp;
1315                                 u132_endp_cancel_work(u132, last_endp);
1316                                 u132_endp_queue_work(u132, last_endp, 0);
1317                                 mutex_unlock(&u132->scheduler_lock);
1318                                 u132_ring_put_kref(u132, ring);
1319                                 return;
1320                         } else {
1321                                 unsigned long delta = endp->jiffies - jiffies;
1322                                 if (delta > wakeup)
1323                                         wakeup = delta;
1324                         }
1325                 }
1326                 if (last_endp->queue_next == last_endp->queue_last) {
1327                 } else if ((last_endp->delayed == 0) || time_after_eq(jiffies,
1328                         last_endp->jiffies)) {
1329                         u132_endp_cancel_work(u132, last_endp);
1330                         u132_endp_queue_work(u132, last_endp, 0);
1331                         mutex_unlock(&u132->scheduler_lock);
1332                         u132_ring_put_kref(u132, ring);
1333                         return;
1334                 } else {
1335                         unsigned long delta = last_endp->jiffies - jiffies;
1336                         if (delta > wakeup)
1337                                 wakeup = delta;
1338                 }
1339                 if (wakeup > 0) {
1340                         u132_ring_requeue_work(u132, ring, wakeup);
1341                         mutex_unlock(&u132->scheduler_lock);
1342                         return;
1343                 } else {
1344                         mutex_unlock(&u132->scheduler_lock);
1345                         u132_ring_put_kref(u132, ring);
1346                         return;
1347                 }
1348         } else {
1349                 mutex_unlock(&u132->scheduler_lock);
1350                 u132_ring_put_kref(u132, ring);
1351                 return;
1352         }
1353 }
1354
1355 static void u132_hcd_endp_work_scheduler(struct work_struct *work)
1356 {
1357         struct u132_ring *ring;
1358         struct u132_endp *endp =
1359                 container_of(work, struct u132_endp, scheduler.work);
1360         struct u132 *u132 = endp->u132;
1361         mutex_lock(&u132->scheduler_lock);
1362         ring = endp->ring;
1363         if (endp->edset_flush) {
1364                 endp->edset_flush = 0;
1365                 if (endp->dequeueing)
1366                         usb_ftdi_elan_edset_flush(u132->platform_dev,
1367                                 ring->number, endp);
1368                 mutex_unlock(&u132->scheduler_lock);
1369                 u132_endp_put_kref(u132, endp);
1370                 return;
1371         } else if (endp->active) {
1372                 mutex_unlock(&u132->scheduler_lock);
1373                 u132_endp_put_kref(u132, endp);
1374                 return;
1375         } else if (ring->in_use) {
1376                 mutex_unlock(&u132->scheduler_lock);
1377                 u132_endp_put_kref(u132, endp);
1378                 return;
1379         } else if (endp->queue_next == endp->queue_last) {
1380                 mutex_unlock(&u132->scheduler_lock);
1381                 u132_endp_put_kref(u132, endp);
1382                 return;
1383         } else if (endp->pipetype == PIPE_INTERRUPT) {
1384                 u8 address = u132->addr[endp->usb_addr].address;
1385                 if (ring->in_use) {
1386                         mutex_unlock(&u132->scheduler_lock);
1387                         u132_endp_put_kref(u132, endp);
1388                         return;
1389                 } else {
1390                         int retval;
1391                         struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1392                                 endp->queue_next];
1393                         endp->active = 1;
1394                         ring->curr_endp = endp;
1395                         ring->in_use = 1;
1396                         mutex_unlock(&u132->scheduler_lock);
1397                         retval = edset_single(u132, ring, endp, urb, address,
1398                                 endp->toggle_bits, u132_hcd_interrupt_recv);
1399                         if (retval != 0)
1400                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
1401                         return;
1402                 }
1403         } else if (endp->pipetype == PIPE_CONTROL) {
1404                 u8 address = u132->addr[endp->usb_addr].address;
1405                 if (ring->in_use) {
1406                         mutex_unlock(&u132->scheduler_lock);
1407                         u132_endp_put_kref(u132, endp);
1408                         return;
1409                 } else if (address == 0) {
1410                         int retval;
1411                         struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1412                                 endp->queue_next];
1413                         endp->active = 1;
1414                         ring->curr_endp = endp;
1415                         ring->in_use = 1;
1416                         mutex_unlock(&u132->scheduler_lock);
1417                         retval = edset_setup(u132, ring, endp, urb, address,
1418                                 0x2, u132_hcd_initial_setup_sent);
1419                         if (retval != 0)
1420                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
1421                         return;
1422                 } else if (endp->usb_addr == 0) {
1423                         int retval;
1424                         struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1425                                 endp->queue_next];
1426                         endp->active = 1;
1427                         ring->curr_endp = endp;
1428                         ring->in_use = 1;
1429                         mutex_unlock(&u132->scheduler_lock);
1430                         retval = edset_setup(u132, ring, endp, urb, 0, 0x2,
1431                                 u132_hcd_enumeration_address_sent);
1432                         if (retval != 0)
1433                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
1434                         return;
1435                 } else {
1436                         int retval;
1437                         struct urb *urb = endp->urb_list[ENDP_QUEUE_MASK &
1438                                 endp->queue_next];
1439                         address = u132->addr[endp->usb_addr].address;
1440                         endp->active = 1;
1441                         ring->curr_endp = endp;
1442                         ring->in_use = 1;
1443                         mutex_unlock(&u132->scheduler_lock);
1444                         retval = edset_setup(u132, ring, endp, urb, address,
1445                                 0x2, u132_hcd_configure_setup_sent);
1446                         if (retval != 0)
1447                                 u132_hcd_giveback_urb(u132, endp, urb, retval);
1448                         return;
1449                 }
1450         } else {
1451                 if (endp->input) {
1452                         u8 address = u132->addr[endp->usb_addr].address;
1453                         if (ring->in_use) {
1454                                 mutex_unlock(&u132->scheduler_lock);
1455                                 u132_endp_put_kref(u132, endp);
1456                                 return;
1457                         } else {
1458                                 int retval;
1459                                 struct urb *urb = endp->urb_list[
1460                                         ENDP_QUEUE_MASK & endp->queue_next];
1461                                 endp->active = 1;
1462                                 ring->curr_endp = endp;
1463                                 ring->in_use = 1;
1464                                 mutex_unlock(&u132->scheduler_lock);
1465                                 retval = edset_input(u132, ring, endp, urb,
1466                                         address, endp->toggle_bits,
1467                                         u132_hcd_bulk_input_recv);
1468                                 if (retval == 0) {
1469                                 } else
1470                                         u132_hcd_giveback_urb(u132, endp, urb,
1471                                                 retval);
1472                                 return;
1473                         }
1474                 } else {        /* output pipe */
1475                         u8 address = u132->addr[endp->usb_addr].address;
1476                         if (ring->in_use) {
1477                                 mutex_unlock(&u132->scheduler_lock);
1478                                 u132_endp_put_kref(u132, endp);
1479                                 return;
1480                         } else {
1481                                 int retval;
1482                                 struct urb *urb = endp->urb_list[
1483                                         ENDP_QUEUE_MASK & endp->queue_next];
1484                                 endp->active = 1;
1485                                 ring->curr_endp = endp;
1486                                 ring->in_use = 1;
1487                                 mutex_unlock(&u132->scheduler_lock);
1488                                 retval = edset_output(u132, ring, endp, urb,
1489                                         address, endp->toggle_bits,
1490                                         u132_hcd_bulk_output_sent);
1491                                 if (retval == 0) {
1492                                 } else
1493                                         u132_hcd_giveback_urb(u132, endp, urb,
1494                                                 retval);
1495                                 return;
1496                         }
1497                 }
1498         }
1499 }
1500 #ifdef CONFIG_PM
1501
1502 static void port_power(struct u132 *u132, int pn, int is_on)
1503 {
1504         u132->port[pn].power = is_on;
1505 }
1506
1507 #endif
1508
1509 static void u132_power(struct u132 *u132, int is_on)
1510 {
1511         struct usb_hcd *hcd = u132_to_hcd(u132)
1512                 ;       /* hub is inactive unless the port is powered */
1513         if (is_on) {
1514                 if (u132->power)
1515                         return;
1516                 u132->power = 1;
1517         } else {
1518                 u132->power = 0;
1519                 hcd->state = HC_STATE_HALT;
1520         }
1521 }
1522
1523 static int u132_periodic_reinit(struct u132 *u132)
1524 {
1525         int retval;
1526         u32 fi = u132->hc_fminterval & 0x03fff;
1527         u32 fit;
1528         u32 fminterval;
1529         retval = u132_read_pcimem(u132, fminterval, &fminterval);
1530         if (retval)
1531                 return retval;
1532         fit = fminterval & FIT;
1533         retval = u132_write_pcimem(u132, fminterval,
1534                 (fit ^ FIT) | u132->hc_fminterval);
1535         if (retval)
1536                 return retval;
1537         return u132_write_pcimem(u132, periodicstart,
1538                ((9 * fi) / 10) & 0x3fff);
1539 }
1540
1541 static char *hcfs2string(int state)
1542 {
1543         switch (state) {
1544         case OHCI_USB_RESET:
1545                 return "reset";
1546         case OHCI_USB_RESUME:
1547                 return "resume";
1548         case OHCI_USB_OPER:
1549                 return "operational";
1550         case OHCI_USB_SUSPEND:
1551                 return "suspend";
1552         }
1553         return "?";
1554 }
1555
1556 static int u132_init(struct u132 *u132)
1557 {
1558         int retval;
1559         u32 control;
1560         u132_disable(u132);
1561         u132->next_statechange = jiffies;
1562         retval = u132_write_pcimem(u132, intrdisable, OHCI_INTR_MIE);
1563         if (retval)
1564                 return retval;
1565         retval = u132_read_pcimem(u132, control, &control);
1566         if (retval)
1567                 return retval;
1568         if (u132->num_ports == 0) {
1569                 u32 rh_a = -1;
1570                 retval = u132_read_pcimem(u132, roothub.a, &rh_a);
1571                 if (retval)
1572                         return retval;
1573                 u132->num_ports = rh_a & RH_A_NDP;
1574                 retval = read_roothub_info(u132);
1575                 if (retval)
1576                         return retval;
1577         }
1578         if (u132->num_ports > MAX_U132_PORTS)
1579                 return -EINVAL;
1580
1581         return 0;
1582 }
1583
1584
1585 /* Start an OHCI controller, set the BUS operational
1586 * resets USB and controller
1587 * enable interrupts
1588 */
1589 static int u132_run(struct u132 *u132)
1590 {
1591         int retval;
1592         u32 control;
1593         u32 status;
1594         u32 fminterval;
1595         u32 periodicstart;
1596         u32 cmdstatus;
1597         u32 roothub_a;
1598         int mask = OHCI_INTR_INIT;
1599         int first = u132->hc_fminterval == 0;
1600         int sleep_time = 0;
1601         int reset_timeout = 30; /* ... allow extra time */
1602         u132_disable(u132);
1603         if (first) {
1604                 u32 temp;
1605                 retval = u132_read_pcimem(u132, fminterval, &temp);
1606                 if (retval)
1607                         return retval;
1608                 u132->hc_fminterval = temp & 0x3fff;
1609                 u132->hc_fminterval |= FSMP(u132->hc_fminterval) << 16;
1610         }
1611         retval = u132_read_pcimem(u132, control, &u132->hc_control);
1612         if (retval)
1613                 return retval;
1614         dev_info(&u132->platform_dev->dev, "resetting from state '%s', control "
1615                 "= %08X\n", hcfs2string(u132->hc_control & OHCI_CTRL_HCFS),
1616                 u132->hc_control);
1617         switch (u132->hc_control & OHCI_CTRL_HCFS) {
1618         case OHCI_USB_OPER:
1619                 sleep_time = 0;
1620                 break;
1621         case OHCI_USB_SUSPEND:
1622         case OHCI_USB_RESUME:
1623                 u132->hc_control &= OHCI_CTRL_RWC;
1624                 u132->hc_control |= OHCI_USB_RESUME;
1625                 sleep_time = 10;
1626                 break;
1627         default:
1628                 u132->hc_control &= OHCI_CTRL_RWC;
1629                 u132->hc_control |= OHCI_USB_RESET;
1630                 sleep_time = 50;
1631                 break;
1632         }
1633         retval = u132_write_pcimem(u132, control, u132->hc_control);
1634         if (retval)
1635                 return retval;
1636         retval = u132_read_pcimem(u132, control, &control);
1637         if (retval)
1638                 return retval;
1639         msleep(sleep_time);
1640         retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
1641         if (retval)
1642                 return retval;
1643         if (!(roothub_a & RH_A_NPS)) {
1644                 int temp;       /* power down each port */
1645                 for (temp = 0; temp < u132->num_ports; temp++) {
1646                         retval = u132_write_pcimem(u132,
1647                                 roothub.portstatus[temp], RH_PS_LSDA);
1648                         if (retval)
1649                                 return retval;
1650                 }
1651         }
1652         retval = u132_read_pcimem(u132, control, &control);
1653         if (retval)
1654                 return retval;
1655 retry:
1656         retval = u132_read_pcimem(u132, cmdstatus, &status);
1657         if (retval)
1658                 return retval;
1659         retval = u132_write_pcimem(u132, cmdstatus, OHCI_HCR);
1660         if (retval)
1661                 return retval;
1662 extra:  {
1663                 retval = u132_read_pcimem(u132, cmdstatus, &status);
1664                 if (retval)
1665                         return retval;
1666                 if (0 != (status & OHCI_HCR)) {
1667                         if (--reset_timeout == 0) {
1668                                 dev_err(&u132->platform_dev->dev, "USB HC reset"
1669                                         " timed out!\n");
1670                                 return -ENODEV;
1671                         } else {
1672                                 msleep(5);
1673                                 goto extra;
1674                         }
1675                 }
1676         }
1677         if (u132->flags & OHCI_QUIRK_INITRESET) {
1678                 retval = u132_write_pcimem(u132, control, u132->hc_control);
1679                 if (retval)
1680                         return retval;
1681                 retval = u132_read_pcimem(u132, control, &control);
1682                 if (retval)
1683                         return retval;
1684         }
1685         retval = u132_write_pcimem(u132, ed_controlhead, 0x00000000);
1686         if (retval)
1687                 return retval;
1688         retval = u132_write_pcimem(u132, ed_bulkhead, 0x11000000);
1689         if (retval)
1690                 return retval;
1691         retval = u132_write_pcimem(u132, hcca, 0x00000000);
1692         if (retval)
1693                 return retval;
1694         retval = u132_periodic_reinit(u132);
1695         if (retval)
1696                 return retval;
1697         retval = u132_read_pcimem(u132, fminterval, &fminterval);
1698         if (retval)
1699                 return retval;
1700         retval = u132_read_pcimem(u132, periodicstart, &periodicstart);
1701         if (retval)
1702                 return retval;
1703         if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) {
1704                 if (!(u132->flags & OHCI_QUIRK_INITRESET)) {
1705                         u132->flags |= OHCI_QUIRK_INITRESET;
1706                         goto retry;
1707                 } else
1708                         dev_err(&u132->platform_dev->dev, "init err(%08x %04x)"
1709                                 "\n", fminterval, periodicstart);
1710         }                       /* start controller operations */
1711         u132->hc_control &= OHCI_CTRL_RWC;
1712         u132->hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER;
1713         retval = u132_write_pcimem(u132, control, u132->hc_control);
1714         if (retval)
1715                 return retval;
1716         retval = u132_write_pcimem(u132, cmdstatus, OHCI_BLF);
1717         if (retval)
1718                 return retval;
1719         retval = u132_read_pcimem(u132, cmdstatus, &cmdstatus);
1720         if (retval)
1721                 return retval;
1722         retval = u132_read_pcimem(u132, control, &control);
1723         if (retval)
1724                 return retval;
1725         u132_to_hcd(u132)->state = HC_STATE_RUNNING;
1726         retval = u132_write_pcimem(u132, roothub.status, RH_HS_DRWE);
1727         if (retval)
1728                 return retval;
1729         retval = u132_write_pcimem(u132, intrstatus, mask);
1730         if (retval)
1731                 return retval;
1732         retval = u132_write_pcimem(u132, intrdisable,
1733                 OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO |
1734                 OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH |
1735                 OHCI_INTR_SO);
1736         if (retval)
1737                 return retval;  /* handle root hub init quirks ... */
1738         retval = u132_read_pcimem(u132, roothub.a, &roothub_a);
1739         if (retval)
1740                 return retval;
1741         roothub_a &= ~(RH_A_PSM | RH_A_OCPM);
1742         if (u132->flags & OHCI_QUIRK_SUPERIO) {
1743                 roothub_a |= RH_A_NOCP;
1744                 roothub_a &= ~(RH_A_POTPGT | RH_A_NPS);
1745                 retval = u132_write_pcimem(u132, roothub.a, roothub_a);
1746                 if (retval)
1747                         return retval;
1748         } else if ((u132->flags & OHCI_QUIRK_AMD756) || distrust_firmware) {
1749                 roothub_a |= RH_A_NPS;
1750                 retval = u132_write_pcimem(u132, roothub.a, roothub_a);
1751                 if (retval)
1752                         return retval;
1753         }
1754         retval = u132_write_pcimem(u132, roothub.status, RH_HS_LPSC);
1755         if (retval)
1756                 return retval;
1757         retval = u132_write_pcimem(u132, roothub.b,
1758                 (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM);
1759         if (retval)
1760                 return retval;
1761         retval = u132_read_pcimem(u132, control, &control);
1762         if (retval)
1763                 return retval;
1764         mdelay((roothub_a >> 23) & 0x1fe);
1765         u132_to_hcd(u132)->state = HC_STATE_RUNNING;
1766         return 0;
1767 }
1768
1769 static void u132_hcd_stop(struct usb_hcd *hcd)
1770 {
1771         struct u132 *u132 = hcd_to_u132(hcd);
1772         if (u132->going > 1) {
1773                 dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p) has b"
1774                         "een removed %d\n", u132, hcd, u132->going);
1775         } else if (u132->going > 0) {
1776                 dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
1777                         "ed\n", hcd);
1778         } else {
1779                 mutex_lock(&u132->sw_lock);
1780                 msleep(100);
1781                 u132_power(u132, 0);
1782                 mutex_unlock(&u132->sw_lock);
1783         }
1784 }
1785
1786 static int u132_hcd_start(struct usb_hcd *hcd)
1787 {
1788         struct u132 *u132 = hcd_to_u132(hcd);
1789         if (u132->going > 1) {
1790                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1791                         , u132->going);
1792                 return -ENODEV;
1793         } else if (u132->going > 0) {
1794                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
1795                 return -ESHUTDOWN;
1796         } else if (hcd->self.controller) {
1797                 int retval;
1798                 struct platform_device *pdev =
1799                         to_platform_device(hcd->self.controller);
1800                 u16 vendor = ((struct u132_platform_data *)
1801                         dev_get_platdata(&pdev->dev))->vendor;
1802                 u16 device = ((struct u132_platform_data *)
1803                         dev_get_platdata(&pdev->dev))->device;
1804                 mutex_lock(&u132->sw_lock);
1805                 msleep(10);
1806                 if (vendor == PCI_VENDOR_ID_AMD && device == 0x740c) {
1807                         u132->flags = OHCI_QUIRK_AMD756;
1808                 } else if (vendor == PCI_VENDOR_ID_OPTI && device == 0xc861) {
1809                         dev_err(&u132->platform_dev->dev, "WARNING: OPTi workar"
1810                                 "ounds unavailable\n");
1811                 } else if (vendor == PCI_VENDOR_ID_COMPAQ && device == 0xa0f8)
1812                         u132->flags |= OHCI_QUIRK_ZFMICRO;
1813                 retval = u132_run(u132);
1814                 if (retval) {
1815                         u132_disable(u132);
1816                         u132->going = 1;
1817                 }
1818                 msleep(100);
1819                 mutex_unlock(&u132->sw_lock);
1820                 return retval;
1821         } else {
1822                 dev_err(&u132->platform_dev->dev, "platform_device missing\n");
1823                 return -ENODEV;
1824         }
1825 }
1826
1827 static int u132_hcd_reset(struct usb_hcd *hcd)
1828 {
1829         struct u132 *u132 = hcd_to_u132(hcd);
1830         if (u132->going > 1) {
1831                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
1832                         , u132->going);
1833                 return -ENODEV;
1834         } else if (u132->going > 0) {
1835                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
1836                 return -ESHUTDOWN;
1837         } else {
1838                 int retval;
1839                 mutex_lock(&u132->sw_lock);
1840                 retval = u132_init(u132);
1841                 if (retval) {
1842                         u132_disable(u132);
1843                         u132->going = 1;
1844                 }
1845                 mutex_unlock(&u132->sw_lock);
1846                 return retval;
1847         }
1848 }
1849
1850 static int create_endpoint_and_queue_int(struct u132 *u132,
1851         struct u132_udev *udev, struct urb *urb,
1852         struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
1853         gfp_t mem_flags)
1854 {
1855         struct u132_ring *ring;
1856         unsigned long irqs;
1857         int rc;
1858         u8 endp_number;
1859         struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
1860
1861         if (!endp)
1862                 return -ENOMEM;
1863
1864         spin_lock_init(&endp->queue_lock.slock);
1865         spin_lock_irqsave(&endp->queue_lock.slock, irqs);
1866         rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
1867         if (rc) {
1868                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1869                 kfree(endp);
1870                 return rc;
1871         }
1872
1873         endp_number = ++u132->num_endpoints;
1874         urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
1875         INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
1876         INIT_LIST_HEAD(&endp->urb_more);
1877         ring = endp->ring = &u132->ring[0];
1878         if (ring->curr_endp) {
1879                 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
1880         } else {
1881                 INIT_LIST_HEAD(&endp->endp_ring);
1882                 ring->curr_endp = endp;
1883         }
1884         ring->length += 1;
1885         endp->dequeueing = 0;
1886         endp->edset_flush = 0;
1887         endp->active = 0;
1888         endp->delayed = 0;
1889         endp->endp_number = endp_number;
1890         endp->u132 = u132;
1891         endp->hep = urb->ep;
1892         endp->pipetype = usb_pipetype(urb->pipe);
1893         u132_endp_init_kref(u132, endp);
1894         if (usb_pipein(urb->pipe)) {
1895                 endp->toggle_bits = 0x2;
1896                 usb_settoggle(udev->usb_device, usb_endp, 0, 0);
1897                 endp->input = 1;
1898                 endp->output = 0;
1899                 udev->endp_number_in[usb_endp] = endp_number;
1900                 u132_udev_get_kref(u132, udev);
1901         } else {
1902                 endp->toggle_bits = 0x2;
1903                 usb_settoggle(udev->usb_device, usb_endp, 1, 0);
1904                 endp->input = 0;
1905                 endp->output = 1;
1906                 udev->endp_number_out[usb_endp] = endp_number;
1907                 u132_udev_get_kref(u132, udev);
1908         }
1909         urb->hcpriv = u132;
1910         endp->delayed = 1;
1911         endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
1912         endp->udev_number = address;
1913         endp->usb_addr = usb_addr;
1914         endp->usb_endp = usb_endp;
1915         endp->queue_size = 1;
1916         endp->queue_last = 0;
1917         endp->queue_next = 0;
1918         endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
1919         spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1920         u132_endp_queue_work(u132, endp, msecs_to_jiffies(urb->interval));
1921         return 0;
1922 }
1923
1924 static int queue_int_on_old_endpoint(struct u132 *u132,
1925         struct u132_udev *udev, struct urb *urb,
1926         struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
1927         u8 usb_endp, u8 address)
1928 {
1929         urb->hcpriv = u132;
1930         endp->delayed = 1;
1931         endp->jiffies = jiffies + msecs_to_jiffies(urb->interval);
1932         if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
1933                 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
1934         } else {
1935                 struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
1936                         GFP_ATOMIC);
1937                 if (urbq == NULL) {
1938                         endp->queue_size -= 1;
1939                         return -ENOMEM;
1940                 } else {
1941                         list_add_tail(&urbq->urb_more, &endp->urb_more);
1942                         urbq->urb = urb;
1943                 }
1944         }
1945         return 0;
1946 }
1947
1948 static int create_endpoint_and_queue_bulk(struct u132 *u132,
1949         struct u132_udev *udev, struct urb *urb,
1950         struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp, u8 address,
1951         gfp_t mem_flags)
1952 {
1953         int ring_number;
1954         struct u132_ring *ring;
1955         unsigned long irqs;
1956         int rc;
1957         u8 endp_number;
1958         struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
1959
1960         if (!endp)
1961                 return -ENOMEM;
1962
1963         spin_lock_init(&endp->queue_lock.slock);
1964         spin_lock_irqsave(&endp->queue_lock.slock, irqs);
1965         rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
1966         if (rc) {
1967                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
1968                 kfree(endp);
1969                 return rc;
1970         }
1971
1972         endp_number = ++u132->num_endpoints;
1973         urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
1974         INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
1975         INIT_LIST_HEAD(&endp->urb_more);
1976         endp->dequeueing = 0;
1977         endp->edset_flush = 0;
1978         endp->active = 0;
1979         endp->delayed = 0;
1980         endp->endp_number = endp_number;
1981         endp->u132 = u132;
1982         endp->hep = urb->ep;
1983         endp->pipetype = usb_pipetype(urb->pipe);
1984         u132_endp_init_kref(u132, endp);
1985         if (usb_pipein(urb->pipe)) {
1986                 endp->toggle_bits = 0x2;
1987                 usb_settoggle(udev->usb_device, usb_endp, 0, 0);
1988                 ring_number = 3;
1989                 endp->input = 1;
1990                 endp->output = 0;
1991                 udev->endp_number_in[usb_endp] = endp_number;
1992                 u132_udev_get_kref(u132, udev);
1993         } else {
1994                 endp->toggle_bits = 0x2;
1995                 usb_settoggle(udev->usb_device, usb_endp, 1, 0);
1996                 ring_number = 2;
1997                 endp->input = 0;
1998                 endp->output = 1;
1999                 udev->endp_number_out[usb_endp] = endp_number;
2000                 u132_udev_get_kref(u132, udev);
2001         }
2002         ring = endp->ring = &u132->ring[ring_number - 1];
2003         if (ring->curr_endp) {
2004                 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
2005         } else {
2006                 INIT_LIST_HEAD(&endp->endp_ring);
2007                 ring->curr_endp = endp;
2008         }
2009         ring->length += 1;
2010         urb->hcpriv = u132;
2011         endp->udev_number = address;
2012         endp->usb_addr = usb_addr;
2013         endp->usb_endp = usb_endp;
2014         endp->queue_size = 1;
2015         endp->queue_last = 0;
2016         endp->queue_next = 0;
2017         endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2018         spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2019         u132_endp_queue_work(u132, endp, 0);
2020         return 0;
2021 }
2022
2023 static int queue_bulk_on_old_endpoint(struct u132 *u132, struct u132_udev *udev,
2024         struct urb *urb,
2025         struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
2026         u8 usb_endp, u8 address)
2027 {
2028         urb->hcpriv = u132;
2029         if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2030                 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2031         } else {
2032                 struct u132_urbq *urbq = kmalloc(sizeof(struct u132_urbq),
2033                         GFP_ATOMIC);
2034                 if (urbq == NULL) {
2035                         endp->queue_size -= 1;
2036                         return -ENOMEM;
2037                 } else {
2038                         list_add_tail(&urbq->urb_more, &endp->urb_more);
2039                         urbq->urb = urb;
2040                 }
2041         }
2042         return 0;
2043 }
2044
2045 static int create_endpoint_and_queue_control(struct u132 *u132,
2046         struct urb *urb,
2047         struct usb_device *usb_dev, u8 usb_addr, u8 usb_endp,
2048         gfp_t mem_flags)
2049 {
2050         struct u132_ring *ring;
2051         unsigned long irqs;
2052         int rc;
2053         u8 endp_number;
2054         struct u132_endp *endp = kmalloc(sizeof(struct u132_endp), mem_flags);
2055
2056         if (!endp)
2057                 return -ENOMEM;
2058
2059         spin_lock_init(&endp->queue_lock.slock);
2060         spin_lock_irqsave(&endp->queue_lock.slock, irqs);
2061         rc = usb_hcd_link_urb_to_ep(u132_to_hcd(u132), urb);
2062         if (rc) {
2063                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2064                 kfree(endp);
2065                 return rc;
2066         }
2067
2068         endp_number = ++u132->num_endpoints;
2069         urb->ep->hcpriv = u132->endp[endp_number - 1] = endp;
2070         INIT_DELAYED_WORK(&endp->scheduler, u132_hcd_endp_work_scheduler);
2071         INIT_LIST_HEAD(&endp->urb_more);
2072         ring = endp->ring = &u132->ring[0];
2073         if (ring->curr_endp) {
2074                 list_add_tail(&endp->endp_ring, &ring->curr_endp->endp_ring);
2075         } else {
2076                 INIT_LIST_HEAD(&endp->endp_ring);
2077                 ring->curr_endp = endp;
2078         }
2079         ring->length += 1;
2080         endp->dequeueing = 0;
2081         endp->edset_flush = 0;
2082         endp->active = 0;
2083         endp->delayed = 0;
2084         endp->endp_number = endp_number;
2085         endp->u132 = u132;
2086         endp->hep = urb->ep;
2087         u132_endp_init_kref(u132, endp);
2088         u132_endp_get_kref(u132, endp);
2089         if (usb_addr == 0) {
2090                 u8 address = u132->addr[usb_addr].address;
2091                 struct u132_udev *udev = &u132->udev[address];
2092                 endp->udev_number = address;
2093                 endp->usb_addr = usb_addr;
2094                 endp->usb_endp = usb_endp;
2095                 endp->input = 1;
2096                 endp->output = 1;
2097                 endp->pipetype = usb_pipetype(urb->pipe);
2098                 u132_udev_init_kref(u132, udev);
2099                 u132_udev_get_kref(u132, udev);
2100                 udev->endp_number_in[usb_endp] = endp_number;
2101                 udev->endp_number_out[usb_endp] = endp_number;
2102                 urb->hcpriv = u132;
2103                 endp->queue_size = 1;
2104                 endp->queue_last = 0;
2105                 endp->queue_next = 0;
2106                 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2107                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2108                 u132_endp_queue_work(u132, endp, 0);
2109                 return 0;
2110         } else {                /*(usb_addr > 0) */
2111                 u8 address = u132->addr[usb_addr].address;
2112                 struct u132_udev *udev = &u132->udev[address];
2113                 endp->udev_number = address;
2114                 endp->usb_addr = usb_addr;
2115                 endp->usb_endp = usb_endp;
2116                 endp->input = 1;
2117                 endp->output = 1;
2118                 endp->pipetype = usb_pipetype(urb->pipe);
2119                 u132_udev_get_kref(u132, udev);
2120                 udev->enumeration = 2;
2121                 udev->endp_number_in[usb_endp] = endp_number;
2122                 udev->endp_number_out[usb_endp] = endp_number;
2123                 urb->hcpriv = u132;
2124                 endp->queue_size = 1;
2125                 endp->queue_last = 0;
2126                 endp->queue_next = 0;
2127                 endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] = urb;
2128                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2129                 u132_endp_queue_work(u132, endp, 0);
2130                 return 0;
2131         }
2132 }
2133
2134 static int queue_control_on_old_endpoint(struct u132 *u132,
2135         struct urb *urb,
2136         struct usb_device *usb_dev, struct u132_endp *endp, u8 usb_addr,
2137         u8 usb_endp)
2138 {
2139         if (usb_addr == 0) {
2140                 if (usb_pipein(urb->pipe)) {
2141                         urb->hcpriv = u132;
2142                         if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2143                                 endp->urb_list[ENDP_QUEUE_MASK &
2144                                         endp->queue_last++] = urb;
2145                         } else {
2146                                 struct u132_urbq *urbq =
2147                                         kmalloc(sizeof(struct u132_urbq),
2148                                         GFP_ATOMIC);
2149                                 if (urbq == NULL) {
2150                                         endp->queue_size -= 1;
2151                                         return -ENOMEM;
2152                                 } else {
2153                                         list_add_tail(&urbq->urb_more,
2154                                                 &endp->urb_more);
2155                                         urbq->urb = urb;
2156                                 }
2157                         }
2158                         return 0;
2159                 } else {        /* usb_pipeout(urb->pipe) */
2160                         struct u132_addr *addr = &u132->addr[usb_dev->devnum];
2161                         int I = MAX_U132_UDEVS;
2162                         int i = 0;
2163                         while (--I > 0) {
2164                                 struct u132_udev *udev = &u132->udev[++i];
2165                                 if (udev->usb_device) {
2166                                         continue;
2167                                 } else {
2168                                         udev->enumeration = 1;
2169                                         u132->addr[0].address = i;
2170                                         endp->udev_number = i;
2171                                         udev->udev_number = i;
2172                                         udev->usb_addr = usb_dev->devnum;
2173                                         u132_udev_init_kref(u132, udev);
2174                                         udev->endp_number_in[usb_endp] =
2175                                                 endp->endp_number;
2176                                         u132_udev_get_kref(u132, udev);
2177                                         udev->endp_number_out[usb_endp] =
2178                                                 endp->endp_number;
2179                                         udev->usb_device = usb_dev;
2180                                         ((u8 *) (urb->setup_packet))[2] =
2181                                                 addr->address = i;
2182                                         u132_udev_get_kref(u132, udev);
2183                                         break;
2184                                 }
2185                         }
2186                         if (I == 0) {
2187                                 dev_err(&u132->platform_dev->dev, "run out of d"
2188                                         "evice space\n");
2189                                 return -EINVAL;
2190                         }
2191                         urb->hcpriv = u132;
2192                         if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2193                                 endp->urb_list[ENDP_QUEUE_MASK &
2194                                         endp->queue_last++] = urb;
2195                         } else {
2196                                 struct u132_urbq *urbq =
2197                                         kmalloc(sizeof(struct u132_urbq),
2198                                         GFP_ATOMIC);
2199                                 if (urbq == NULL) {
2200                                         endp->queue_size -= 1;
2201                                         return -ENOMEM;
2202                                 } else {
2203                                         list_add_tail(&urbq->urb_more,
2204                                                 &endp->urb_more);
2205                                         urbq->urb = urb;
2206                                 }
2207                         }
2208                         return 0;
2209                 }
2210         } else {                /*(usb_addr > 0) */
2211                 u8 address = u132->addr[usb_addr].address;
2212                 struct u132_udev *udev = &u132->udev[address];
2213                 urb->hcpriv = u132;
2214                 if (udev->enumeration != 2)
2215                         udev->enumeration = 2;
2216                 if (endp->queue_size++ < ENDP_QUEUE_SIZE) {
2217                         endp->urb_list[ENDP_QUEUE_MASK & endp->queue_last++] =
2218                                 urb;
2219                 } else {
2220                         struct u132_urbq *urbq =
2221                                 kmalloc(sizeof(struct u132_urbq), GFP_ATOMIC);
2222                         if (urbq == NULL) {
2223                                 endp->queue_size -= 1;
2224                                 return -ENOMEM;
2225                         } else {
2226                                 list_add_tail(&urbq->urb_more, &endp->urb_more);
2227                                 urbq->urb = urb;
2228                         }
2229                 }
2230                 return 0;
2231         }
2232 }
2233
2234 static int u132_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
2235                 gfp_t mem_flags)
2236 {
2237         struct u132 *u132 = hcd_to_u132(hcd);
2238         if (irqs_disabled()) {
2239                 if (gfpflags_allow_blocking(mem_flags)) {
2240                         printk(KERN_ERR "invalid context for function that might sleep\n");
2241                         return -EINVAL;
2242                 }
2243         }
2244         if (u132->going > 1) {
2245                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2246                         , u132->going);
2247                 return -ENODEV;
2248         } else if (u132->going > 0) {
2249                 dev_err(&u132->platform_dev->dev, "device is being removed "
2250                                 "urb=%p\n", urb);
2251                 return -ESHUTDOWN;
2252         } else {
2253                 u8 usb_addr = usb_pipedevice(urb->pipe);
2254                 u8 usb_endp = usb_pipeendpoint(urb->pipe);
2255                 struct usb_device *usb_dev = urb->dev;
2256                 if (usb_pipetype(urb->pipe) == PIPE_INTERRUPT) {
2257                         u8 address = u132->addr[usb_addr].address;
2258                         struct u132_udev *udev = &u132->udev[address];
2259                         struct u132_endp *endp = urb->ep->hcpriv;
2260                         urb->actual_length = 0;
2261                         if (endp) {
2262                                 unsigned long irqs;
2263                                 int retval;
2264                                 spin_lock_irqsave(&endp->queue_lock.slock,
2265                                         irqs);
2266                                 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2267                                 if (retval == 0) {
2268                                         retval = queue_int_on_old_endpoint(
2269                                                         u132, udev, urb,
2270                                                         usb_dev, endp,
2271                                                         usb_addr, usb_endp,
2272                                                         address);
2273                                         if (retval)
2274                                                 usb_hcd_unlink_urb_from_ep(
2275         hcd, urb);
2276                                 }
2277                                 spin_unlock_irqrestore(&endp->queue_lock.slock,
2278                                         irqs);
2279                                 if (retval) {
2280                                         return retval;
2281                                 } else {
2282                                         u132_endp_queue_work(u132, endp,
2283                                                 msecs_to_jiffies(urb->interval))
2284                                                 ;
2285                                         return 0;
2286                                 }
2287                         } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2288                                 return -EINVAL;
2289                         } else {        /*(endp == NULL) */
2290                                 return create_endpoint_and_queue_int(u132, udev,
2291                                                 urb, usb_dev, usb_addr,
2292                                                 usb_endp, address, mem_flags);
2293                         }
2294                 } else if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
2295                         dev_err(&u132->platform_dev->dev, "the hardware does no"
2296                                 "t support PIPE_ISOCHRONOUS\n");
2297                         return -EINVAL;
2298                 } else if (usb_pipetype(urb->pipe) == PIPE_BULK) {
2299                         u8 address = u132->addr[usb_addr].address;
2300                         struct u132_udev *udev = &u132->udev[address];
2301                         struct u132_endp *endp = urb->ep->hcpriv;
2302                         urb->actual_length = 0;
2303                         if (endp) {
2304                                 unsigned long irqs;
2305                                 int retval;
2306                                 spin_lock_irqsave(&endp->queue_lock.slock,
2307                                         irqs);
2308                                 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2309                                 if (retval == 0) {
2310                                         retval = queue_bulk_on_old_endpoint(
2311                                                         u132, udev, urb,
2312                                                         usb_dev, endp,
2313                                                         usb_addr, usb_endp,
2314                                                         address);
2315                                         if (retval)
2316                                                 usb_hcd_unlink_urb_from_ep(
2317         hcd, urb);
2318                                 }
2319                                 spin_unlock_irqrestore(&endp->queue_lock.slock,
2320                                         irqs);
2321                                 if (retval) {
2322                                         return retval;
2323                                 } else {
2324                                         u132_endp_queue_work(u132, endp, 0);
2325                                         return 0;
2326                                 }
2327                         } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2328                                 return -EINVAL;
2329                         } else
2330                                 return create_endpoint_and_queue_bulk(u132,
2331                                         udev, urb, usb_dev, usb_addr,
2332                                         usb_endp, address, mem_flags);
2333                 } else {
2334                         struct u132_endp *endp = urb->ep->hcpriv;
2335                         u16 urb_size = 8;
2336                         u8 *b = urb->setup_packet;
2337                         int i = 0;
2338                         char data[30 * 3 + 4];
2339                         char *d = data;
2340                         int m = (sizeof(data) - 1) / 3;
2341                         int l = 0;
2342                         data[0] = 0;
2343                         while (urb_size-- > 0) {
2344                                 if (i > m) {
2345                                 } else if (i++ < m) {
2346                                         int w = sprintf(d, " %02X", *b++);
2347                                         d += w;
2348                                         l += w;
2349                                 } else
2350                                         d += sprintf(d, " ..");
2351                         }
2352                         if (endp) {
2353                                 unsigned long irqs;
2354                                 int retval;
2355                                 spin_lock_irqsave(&endp->queue_lock.slock,
2356                                         irqs);
2357                                 retval = usb_hcd_link_urb_to_ep(hcd, urb);
2358                                 if (retval == 0) {
2359                                         retval = queue_control_on_old_endpoint(
2360                                                         u132, urb, usb_dev,
2361                                                         endp, usb_addr,
2362                                                         usb_endp);
2363                                         if (retval)
2364                                                 usb_hcd_unlink_urb_from_ep(
2365                                                                 hcd, urb);
2366                                 }
2367                                 spin_unlock_irqrestore(&endp->queue_lock.slock,
2368                                         irqs);
2369                                 if (retval) {
2370                                         return retval;
2371                                 } else {
2372                                         u132_endp_queue_work(u132, endp, 0);
2373                                         return 0;
2374                                 }
2375                         } else if (u132->num_endpoints == MAX_U132_ENDPS) {
2376                                 return -EINVAL;
2377                         } else
2378                                 return create_endpoint_and_queue_control(u132,
2379                                         urb, usb_dev, usb_addr, usb_endp,
2380                                         mem_flags);
2381                 }
2382         }
2383 }
2384
2385 static int dequeue_from_overflow_chain(struct u132 *u132,
2386         struct u132_endp *endp, struct urb *urb)
2387 {
2388         struct u132_urbq *urbq;
2389
2390         list_for_each_entry(urbq, &endp->urb_more, urb_more) {
2391                 if (urbq->urb == urb) {
2392                         struct usb_hcd *hcd = u132_to_hcd(u132);
2393                         list_del(&urbq->urb_more);
2394                         endp->queue_size -= 1;
2395                         urb->error_count = 0;
2396                         usb_hcd_giveback_urb(hcd, urb, 0);
2397                         return 0;
2398                 } else
2399                         continue;
2400         }
2401         dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]=%p ring"
2402                 "[%d] %c%c usb_endp=%d usb_addr=%d size=%d next=%04X last=%04X"
2403                 "\n", urb, endp->endp_number, endp, endp->ring->number,
2404                 endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
2405                 endp->usb_endp, endp->usb_addr, endp->queue_size,
2406                 endp->queue_next, endp->queue_last);
2407         return -EINVAL;
2408 }
2409
2410 static int u132_endp_urb_dequeue(struct u132 *u132, struct u132_endp *endp,
2411                 struct urb *urb, int status)
2412 {
2413         unsigned long irqs;
2414         int rc;
2415
2416         spin_lock_irqsave(&endp->queue_lock.slock, irqs);
2417         rc = usb_hcd_check_unlink_urb(u132_to_hcd(u132), urb, status);
2418         if (rc) {
2419                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2420                 return rc;
2421         }
2422         if (endp->queue_size == 0) {
2423                 dev_err(&u132->platform_dev->dev, "urb=%p not found in endp[%d]"
2424                         "=%p ring[%d] %c%c usb_endp=%d usb_addr=%d\n", urb,
2425                         endp->endp_number, endp, endp->ring->number,
2426                         endp->input ? 'I' : ' ', endp->output ? 'O' : ' ',
2427                         endp->usb_endp, endp->usb_addr);
2428                 spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2429                 return -EINVAL;
2430         }
2431         if (urb == endp->urb_list[ENDP_QUEUE_MASK & endp->queue_next]) {
2432                 if (endp->active) {
2433                         endp->dequeueing = 1;
2434                         endp->edset_flush = 1;
2435                         u132_endp_queue_work(u132, endp, 0);
2436                         spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2437                         return 0;
2438                 } else {
2439                         spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2440                         u132_hcd_abandon_urb(u132, endp, urb, status);
2441                         return 0;
2442                 }
2443         } else {
2444                 u16 queue_list = 0;
2445                 u16 queue_size = endp->queue_size;
2446                 u16 queue_scan = endp->queue_next;
2447                 struct urb **urb_slot = NULL;
2448                 while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
2449                         if (urb == endp->urb_list[ENDP_QUEUE_MASK &
2450                                 ++queue_scan]) {
2451                                 urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
2452                                         queue_scan];
2453                                 break;
2454                         } else
2455                                 continue;
2456                 }
2457                 while (++queue_list < ENDP_QUEUE_SIZE && --queue_size > 0) {
2458                         *urb_slot = endp->urb_list[ENDP_QUEUE_MASK &
2459                                 ++queue_scan];
2460                         urb_slot = &endp->urb_list[ENDP_QUEUE_MASK &
2461                                 queue_scan];
2462                 }
2463                 if (urb_slot) {
2464                         struct usb_hcd *hcd = u132_to_hcd(u132);
2465
2466                         usb_hcd_unlink_urb_from_ep(hcd, urb);
2467                         endp->queue_size -= 1;
2468                         if (list_empty(&endp->urb_more)) {
2469                                 spin_unlock_irqrestore(&endp->queue_lock.slock,
2470                                         irqs);
2471                         } else {
2472                                 struct list_head *next = endp->urb_more.next;
2473                                 struct u132_urbq *urbq = list_entry(next,
2474                                         struct u132_urbq, urb_more);
2475                                 list_del(next);
2476                                 *urb_slot = urbq->urb;
2477                                 spin_unlock_irqrestore(&endp->queue_lock.slock,
2478                                         irqs);
2479                                 kfree(urbq);
2480                         }
2481                         urb->error_count = 0;
2482                         usb_hcd_giveback_urb(hcd, urb, status);
2483                         return 0;
2484                 } else if (list_empty(&endp->urb_more)) {
2485                         dev_err(&u132->platform_dev->dev, "urb=%p not found in "
2486                                 "endp[%d]=%p ring[%d] %c%c usb_endp=%d usb_addr"
2487                                 "=%d size=%d next=%04X last=%04X\n", urb,
2488                                 endp->endp_number, endp, endp->ring->number,
2489                                 endp->input ? 'I' : ' ',
2490                                 endp->output ? 'O' : ' ', endp->usb_endp,
2491                                 endp->usb_addr, endp->queue_size,
2492                                 endp->queue_next, endp->queue_last);
2493                         spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2494                         return -EINVAL;
2495                 } else {
2496                         int retval;
2497
2498                         usb_hcd_unlink_urb_from_ep(u132_to_hcd(u132), urb);
2499                         retval = dequeue_from_overflow_chain(u132, endp,
2500                                 urb);
2501                         spin_unlock_irqrestore(&endp->queue_lock.slock, irqs);
2502                         return retval;
2503                 }
2504         }
2505 }
2506
2507 static int u132_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
2508 {
2509         struct u132 *u132 = hcd_to_u132(hcd);
2510         if (u132->going > 2) {
2511                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2512                         , u132->going);
2513                 return -ENODEV;
2514         } else {
2515                 u8 usb_addr = usb_pipedevice(urb->pipe);
2516                 u8 usb_endp = usb_pipeendpoint(urb->pipe);
2517                 u8 address = u132->addr[usb_addr].address;
2518                 struct u132_udev *udev = &u132->udev[address];
2519                 if (usb_pipein(urb->pipe)) {
2520                         u8 endp_number = udev->endp_number_in[usb_endp];
2521                         struct u132_endp *endp = u132->endp[endp_number - 1];
2522                         return u132_endp_urb_dequeue(u132, endp, urb, status);
2523                 } else {
2524                         u8 endp_number = udev->endp_number_out[usb_endp];
2525                         struct u132_endp *endp = u132->endp[endp_number - 1];
2526                         return u132_endp_urb_dequeue(u132, endp, urb, status);
2527                 }
2528         }
2529 }
2530
2531 static void u132_endpoint_disable(struct usb_hcd *hcd,
2532         struct usb_host_endpoint *hep)
2533 {
2534         struct u132 *u132 = hcd_to_u132(hcd);
2535         if (u132->going > 2) {
2536                 dev_err(&u132->platform_dev->dev, "u132 device %p(hcd=%p hep=%p"
2537                         ") has been removed %d\n", u132, hcd, hep,
2538                         u132->going);
2539         } else {
2540                 struct u132_endp *endp = hep->hcpriv;
2541                 if (endp)
2542                         u132_endp_put_kref(u132, endp);
2543         }
2544 }
2545
2546 static int u132_get_frame(struct usb_hcd *hcd)
2547 {
2548         struct u132 *u132 = hcd_to_u132(hcd);
2549         if (u132->going > 1) {
2550                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2551                         , u132->going);
2552                 return -ENODEV;
2553         } else if (u132->going > 0) {
2554                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2555                 return -ESHUTDOWN;
2556         } else {
2557                 int frame = 0;
2558                 dev_err(&u132->platform_dev->dev, "TODO: u132_get_frame\n");
2559                 mdelay(100);
2560                 return frame;
2561         }
2562 }
2563
2564 static int u132_roothub_descriptor(struct u132 *u132,
2565         struct usb_hub_descriptor *desc)
2566 {
2567         int retval;
2568         u16 temp;
2569         u32 rh_a = -1;
2570         u32 rh_b = -1;
2571         retval = u132_read_pcimem(u132, roothub.a, &rh_a);
2572         if (retval)
2573                 return retval;
2574         desc->bDescriptorType = USB_DT_HUB;
2575         desc->bPwrOn2PwrGood = (rh_a & RH_A_POTPGT) >> 24;
2576         desc->bHubContrCurrent = 0;
2577         desc->bNbrPorts = u132->num_ports;
2578         temp = 1 + (u132->num_ports / 8);
2579         desc->bDescLength = 7 + 2 * temp;
2580         temp = HUB_CHAR_COMMON_LPSM | HUB_CHAR_COMMON_OCPM;
2581         if (rh_a & RH_A_NPS)
2582                 temp |= HUB_CHAR_NO_LPSM;
2583         if (rh_a & RH_A_PSM)
2584                 temp |= HUB_CHAR_INDV_PORT_LPSM;
2585         if (rh_a & RH_A_NOCP)
2586                 temp |= HUB_CHAR_NO_OCPM;
2587         else if (rh_a & RH_A_OCPM)
2588                 temp |= HUB_CHAR_INDV_PORT_OCPM;
2589         desc->wHubCharacteristics = cpu_to_le16(temp);
2590         retval = u132_read_pcimem(u132, roothub.b, &rh_b);
2591         if (retval)
2592                 return retval;
2593         memset(desc->u.hs.DeviceRemovable, 0xff,
2594                         sizeof(desc->u.hs.DeviceRemovable));
2595         desc->u.hs.DeviceRemovable[0] = rh_b & RH_B_DR;
2596         if (u132->num_ports > 7) {
2597                 desc->u.hs.DeviceRemovable[1] = (rh_b & RH_B_DR) >> 8;
2598                 desc->u.hs.DeviceRemovable[2] = 0xff;
2599         } else
2600                 desc->u.hs.DeviceRemovable[1] = 0xff;
2601         return 0;
2602 }
2603
2604 static int u132_roothub_status(struct u132 *u132, __le32 *desc)
2605 {
2606         u32 rh_status = -1;
2607         int ret_status = u132_read_pcimem(u132, roothub.status, &rh_status);
2608         *desc = cpu_to_le32(rh_status);
2609         return ret_status;
2610 }
2611
2612 static int u132_roothub_portstatus(struct u132 *u132, __le32 *desc, u16 wIndex)
2613 {
2614         if (wIndex == 0 || wIndex > u132->num_ports) {
2615                 return -EINVAL;
2616         } else {
2617                 int port = wIndex - 1;
2618                 u32 rh_portstatus = -1;
2619                 int ret_portstatus = u132_read_pcimem(u132,
2620                         roothub.portstatus[port], &rh_portstatus);
2621                 *desc = cpu_to_le32(rh_portstatus);
2622                 if (*(u16 *) (desc + 2)) {
2623                         dev_info(&u132->platform_dev->dev, "Port %d Status Chan"
2624                                 "ge = %08X\n", port, *desc);
2625                 }
2626                 return ret_portstatus;
2627         }
2628 }
2629
2630
2631 /* this timer value might be vendor-specific ... */
2632 #define PORT_RESET_HW_MSEC 10
2633 #define PORT_RESET_MSEC 10
2634 /* wrap-aware logic morphed from <linux/jiffies.h> */
2635 #define tick_before(t1, t2) ((s16)(((s16)(t1))-((s16)(t2))) < 0)
2636 static int u132_roothub_portreset(struct u132 *u132, int port_index)
2637 {
2638         int retval;
2639         u32 fmnumber;
2640         u16 now;
2641         u16 reset_done;
2642         retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2643         if (retval)
2644                 return retval;
2645         now = fmnumber;
2646         reset_done = now + PORT_RESET_MSEC;
2647         do {
2648                 u32 portstat;
2649                 do {
2650                         retval = u132_read_pcimem(u132,
2651                                 roothub.portstatus[port_index], &portstat);
2652                         if (retval)
2653                                 return retval;
2654                         if (RH_PS_PRS & portstat)
2655                                 continue;
2656                         else
2657                                 break;
2658                 } while (tick_before(now, reset_done));
2659                 if (RH_PS_PRS & portstat)
2660                         return -ENODEV;
2661                 if (RH_PS_CCS & portstat) {
2662                         if (RH_PS_PRSC & portstat) {
2663                                 retval = u132_write_pcimem(u132,
2664                                         roothub.portstatus[port_index],
2665                                         RH_PS_PRSC);
2666                                 if (retval)
2667                                         return retval;
2668                         }
2669                 } else
2670                         break;  /* start the next reset,
2671                                 sleep till it's probably done */
2672                 retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
2673                          RH_PS_PRS);
2674                 if (retval)
2675                         return retval;
2676                 msleep(PORT_RESET_HW_MSEC);
2677                 retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2678                 if (retval)
2679                         return retval;
2680                 now = fmnumber;
2681         } while (tick_before(now, reset_done));
2682         return 0;
2683 }
2684
2685 static int u132_roothub_setportfeature(struct u132 *u132, u16 wValue,
2686         u16 wIndex)
2687 {
2688         if (wIndex == 0 || wIndex > u132->num_ports) {
2689                 return -EINVAL;
2690         } else {
2691                 int port_index = wIndex - 1;
2692                 struct u132_port *port = &u132->port[port_index];
2693                 port->Status &= ~(1 << wValue);
2694                 switch (wValue) {
2695                 case USB_PORT_FEAT_SUSPEND:
2696                         return u132_write_pcimem(u132,
2697                                roothub.portstatus[port_index], RH_PS_PSS);
2698                 case USB_PORT_FEAT_POWER:
2699                         return u132_write_pcimem(u132,
2700                                roothub.portstatus[port_index], RH_PS_PPS);
2701                 case USB_PORT_FEAT_RESET:
2702                         return u132_roothub_portreset(u132, port_index);
2703                 default:
2704                         return -EPIPE;
2705                 }
2706         }
2707 }
2708
2709 static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
2710         u16 wIndex)
2711 {
2712         if (wIndex == 0 || wIndex > u132->num_ports) {
2713                 return -EINVAL;
2714         } else {
2715                 int port_index = wIndex - 1;
2716                 u32 temp;
2717                 struct u132_port *port = &u132->port[port_index];
2718                 port->Status &= ~(1 << wValue);
2719                 switch (wValue) {
2720                 case USB_PORT_FEAT_ENABLE:
2721                         temp = RH_PS_CCS;
2722                         break;
2723                 case USB_PORT_FEAT_C_ENABLE:
2724                         temp = RH_PS_PESC;
2725                         break;
2726                 case USB_PORT_FEAT_SUSPEND:
2727                         temp = RH_PS_POCI;
2728                         if ((u132->hc_control & OHCI_CTRL_HCFS)
2729                                 != OHCI_USB_OPER) {
2730                                 dev_err(&u132->platform_dev->dev, "TODO resume_"
2731                                         "root_hub\n");
2732                         }
2733                         break;
2734                 case USB_PORT_FEAT_C_SUSPEND:
2735                         temp = RH_PS_PSSC;
2736                         break;
2737                 case USB_PORT_FEAT_POWER:
2738                         temp = RH_PS_LSDA;
2739                         break;
2740                 case USB_PORT_FEAT_C_CONNECTION:
2741                         temp = RH_PS_CSC;
2742                         break;
2743                 case USB_PORT_FEAT_C_OVER_CURRENT:
2744                         temp = RH_PS_OCIC;
2745                         break;
2746                 case USB_PORT_FEAT_C_RESET:
2747                         temp = RH_PS_PRSC;
2748                         break;
2749                 default:
2750                         return -EPIPE;
2751                 }
2752                 return u132_write_pcimem(u132, roothub.portstatus[port_index],
2753                        temp);
2754         }
2755 }
2756
2757
2758 /* the virtual root hub timer IRQ checks for hub status*/
2759 static int u132_hub_status_data(struct usb_hcd *hcd, char *buf)
2760 {
2761         struct u132 *u132 = hcd_to_u132(hcd);
2762         if (u132->going > 1) {
2763                 dev_err(&u132->platform_dev->dev, "device hcd=%p has been remov"
2764                         "ed %d\n", hcd, u132->going);
2765                 return -ENODEV;
2766         } else if (u132->going > 0) {
2767                 dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
2768                         "ed\n", hcd);
2769                 return -ESHUTDOWN;
2770         } else {
2771                 int i, changed = 0, length = 1;
2772                 if (u132->flags & OHCI_QUIRK_AMD756) {
2773                         if ((u132->hc_roothub_a & RH_A_NDP) > MAX_ROOT_PORTS) {
2774                                 dev_err(&u132->platform_dev->dev, "bogus NDP, r"
2775                                         "ereads as NDP=%d\n",
2776                                         u132->hc_roothub_a & RH_A_NDP);
2777                                 goto done;
2778                         }
2779                 }
2780                 if (u132->hc_roothub_status & (RH_HS_LPSC | RH_HS_OCIC))
2781                         buf[0] = changed = 1;
2782                 else
2783                         buf[0] = 0;
2784                 if (u132->num_ports > 7) {
2785                         buf[1] = 0;
2786                         length++;
2787                 }
2788                 for (i = 0; i < u132->num_ports; i++) {
2789                         if (u132->hc_roothub_portstatus[i] & (RH_PS_CSC |
2790                                 RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC |
2791                                 RH_PS_PRSC)) {
2792                                 changed = 1;
2793                                 if (i < 7)
2794                                         buf[0] |= 1 << (i + 1);
2795                                 else
2796                                         buf[1] |= 1 << (i - 7);
2797                                 continue;
2798                         }
2799                         if (!(u132->hc_roothub_portstatus[i] & RH_PS_CCS))
2800                                 continue;
2801
2802                         if ((u132->hc_roothub_portstatus[i] & RH_PS_PSS))
2803                                 continue;
2804                 }
2805 done:
2806                 return changed ? length : 0;
2807         }
2808 }
2809
2810 static int u132_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2811         u16 wIndex, char *buf, u16 wLength)
2812 {
2813         struct u132 *u132 = hcd_to_u132(hcd);
2814         if (u132->going > 1) {
2815                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2816                         , u132->going);
2817                 return -ENODEV;
2818         } else if (u132->going > 0) {
2819                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2820                 return -ESHUTDOWN;
2821         } else {
2822                 int retval = 0;
2823                 mutex_lock(&u132->sw_lock);
2824                 switch (typeReq) {
2825                 case ClearHubFeature:
2826                         switch (wValue) {
2827                         case C_HUB_OVER_CURRENT:
2828                         case C_HUB_LOCAL_POWER:
2829                                 break;
2830                         default:
2831                                 goto stall;
2832                         }
2833                         break;
2834                 case SetHubFeature:
2835                         switch (wValue) {
2836                         case C_HUB_OVER_CURRENT:
2837                         case C_HUB_LOCAL_POWER:
2838                                 break;
2839                         default:
2840                                 goto stall;
2841                         }
2842                         break;
2843                 case ClearPortFeature:{
2844                                 retval = u132_roothub_clearportfeature(u132,
2845                                         wValue, wIndex);
2846                                 if (retval)
2847                                         goto error;
2848                                 break;
2849                         }
2850                 case GetHubDescriptor:{
2851                                 retval = u132_roothub_descriptor(u132,
2852                                         (struct usb_hub_descriptor *)buf);
2853                                 if (retval)
2854                                         goto error;
2855                                 break;
2856                         }
2857                 case GetHubStatus:{
2858                                 retval = u132_roothub_status(u132,
2859                                         (__le32 *) buf);
2860                                 if (retval)
2861                                         goto error;
2862                                 break;
2863                         }
2864                 case GetPortStatus:{
2865                                 retval = u132_roothub_portstatus(u132,
2866                                         (__le32 *) buf, wIndex);
2867                                 if (retval)
2868                                         goto error;
2869                                 break;
2870                         }
2871                 case SetPortFeature:{
2872                                 retval = u132_roothub_setportfeature(u132,
2873                                         wValue, wIndex);
2874                                 if (retval)
2875                                         goto error;
2876                                 break;
2877                         }
2878                 default:
2879                         goto stall;
2880                 error:
2881                         u132_disable(u132);
2882                         u132->going = 1;
2883                         break;
2884                 stall:
2885                         retval = -EPIPE;
2886                         break;
2887                 }
2888                 mutex_unlock(&u132->sw_lock);
2889                 return retval;
2890         }
2891 }
2892
2893 static int u132_start_port_reset(struct usb_hcd *hcd, unsigned port_num)
2894 {
2895         struct u132 *u132 = hcd_to_u132(hcd);
2896         if (u132->going > 1) {
2897                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2898                         , u132->going);
2899                 return -ENODEV;
2900         } else if (u132->going > 0) {
2901                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2902                 return -ESHUTDOWN;
2903         } else
2904                 return 0;
2905 }
2906
2907
2908 #ifdef CONFIG_PM
2909 static int u132_bus_suspend(struct usb_hcd *hcd)
2910 {
2911         struct u132 *u132 = hcd_to_u132(hcd);
2912         if (u132->going > 1) {
2913                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2914                         , u132->going);
2915                 return -ENODEV;
2916         } else if (u132->going > 0) {
2917                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2918                 return -ESHUTDOWN;
2919         } else
2920                 return 0;
2921 }
2922
2923 static int u132_bus_resume(struct usb_hcd *hcd)
2924 {
2925         struct u132 *u132 = hcd_to_u132(hcd);
2926         if (u132->going > 1) {
2927                 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2928                         , u132->going);
2929                 return -ENODEV;
2930         } else if (u132->going > 0) {
2931                 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2932                 return -ESHUTDOWN;
2933         } else
2934                 return 0;
2935 }
2936
2937 #else
2938 #define u132_bus_suspend NULL
2939 #define u132_bus_resume NULL
2940 #endif
2941 static const struct hc_driver u132_hc_driver = {
2942         .description = hcd_name,
2943         .hcd_priv_size = sizeof(struct u132),
2944         .irq = NULL,
2945         .flags = HCD_USB11 | HCD_MEMORY,
2946         .reset = u132_hcd_reset,
2947         .start = u132_hcd_start,
2948         .stop = u132_hcd_stop,
2949         .urb_enqueue = u132_urb_enqueue,
2950         .urb_dequeue = u132_urb_dequeue,
2951         .endpoint_disable = u132_endpoint_disable,
2952         .get_frame_number = u132_get_frame,
2953         .hub_status_data = u132_hub_status_data,
2954         .hub_control = u132_hub_control,
2955         .bus_suspend = u132_bus_suspend,
2956         .bus_resume = u132_bus_resume,
2957         .start_port_reset = u132_start_port_reset,
2958 };
2959
2960 /*
2961 * This function may be called by the USB core whilst the "usb_all_devices_rwsem"
2962 * is held for writing, thus this module must not call usb_remove_hcd()
2963 * synchronously - but instead should immediately stop activity to the
2964 * device and asynchronously call usb_remove_hcd()
2965 */
2966 static int u132_remove(struct platform_device *pdev)
2967 {
2968         struct usb_hcd *hcd = platform_get_drvdata(pdev);
2969         if (hcd) {
2970                 struct u132 *u132 = hcd_to_u132(hcd);
2971                 if (u132->going++ > 1) {
2972                         dev_err(&u132->platform_dev->dev, "already being remove"
2973                                 "d\n");
2974                         return -ENODEV;
2975                 } else {
2976                         int rings = MAX_U132_RINGS;
2977                         int endps = MAX_U132_ENDPS;
2978                         dev_err(&u132->platform_dev->dev, "removing device u132"
2979                                 ".%d\n", u132->sequence_num);
2980                         msleep(100);
2981                         mutex_lock(&u132->sw_lock);
2982                         u132_monitor_cancel_work(u132);
2983                         while (rings-- > 0) {
2984                                 struct u132_ring *ring = &u132->ring[rings];
2985                                 u132_ring_cancel_work(u132, ring);
2986                         }
2987                         while (endps-- > 0) {
2988                                 struct u132_endp *endp = u132->endp[endps];
2989                                 if (endp)
2990                                         u132_endp_cancel_work(u132, endp);
2991                         }
2992                         u132->going += 1;
2993                         printk(KERN_INFO "removing device u132.%d\n",
2994                                 u132->sequence_num);
2995                         mutex_unlock(&u132->sw_lock);
2996                         usb_remove_hcd(hcd);
2997                         u132_u132_put_kref(u132);
2998                         return 0;
2999                 }
3000         } else
3001                 return 0;
3002 }
3003
3004 static void u132_initialise(struct u132 *u132, struct platform_device *pdev)
3005 {
3006         int rings = MAX_U132_RINGS;
3007         int ports = MAX_U132_PORTS;
3008         int addrs = MAX_U132_ADDRS;
3009         int udevs = MAX_U132_UDEVS;
3010         int endps = MAX_U132_ENDPS;
3011         u132->board = dev_get_platdata(&pdev->dev);
3012         u132->platform_dev = pdev;
3013         u132->power = 0;
3014         u132->reset = 0;
3015         mutex_init(&u132->sw_lock);
3016         mutex_init(&u132->scheduler_lock);
3017         while (rings-- > 0) {
3018                 struct u132_ring *ring = &u132->ring[rings];
3019                 ring->u132 = u132;
3020                 ring->number = rings + 1;
3021                 ring->length = 0;
3022                 ring->curr_endp = NULL;