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);
udev_to_u132(struct u132_udev * udev)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
hcd_to_u132(struct usb_hcd * hcd)226 static inline struct u132 *hcd_to_u132(struct usb_hcd *hcd)
227 {
228 return (struct u132 *)(hcd->hcd_priv);
229 }
230
u132_to_hcd(struct u132 * u132)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
u132_disable(struct u132 * u132)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)
u132_hcd_delete(struct kref * kref)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
u132_u132_put_kref(struct u132 * u132)265 static inline void u132_u132_put_kref(struct u132 *u132)
266 {
267 kref_put(&u132->kref, u132_hcd_delete);
268 }
269
u132_u132_init_kref(struct u132 * u132)270 static inline void u132_u132_init_kref(struct u132 *u132)
271 {
272 kref_init(&u132->kref);
273 }
274
u132_udev_delete(struct kref * kref)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
u132_udev_put_kref(struct u132 * u132,struct u132_udev * udev)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
u132_udev_get_kref(struct u132 * u132,struct u132_udev * udev)289 static inline void u132_udev_get_kref(struct u132 *u132, struct u132_udev *udev)
290 {
291 kref_get(&udev->kref);
292 }
293
u132_udev_init_kref(struct u132 * u132,struct u132_udev * udev)294 static inline void u132_udev_init_kref(struct u132 *u132,
295 struct u132_udev *udev)
296 {
297 kref_init(&udev->kref);
298 }
299
u132_ring_put_kref(struct u132 * u132,struct u132_ring * ring)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
u132_ring_requeue_work(struct u132 * u132,struct u132_ring * ring,unsigned int delta)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
u132_ring_queue_work(struct u132 * u132,struct u132_ring * ring,unsigned int delta)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
u132_ring_cancel_work(struct u132 * u132,struct u132_ring * ring)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
u132_endp_delete(struct kref * kref)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
u132_endp_put_kref(struct u132 * u132,struct u132_endp * endp)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
u132_endp_get_kref(struct u132 * u132,struct u132_endp * endp)373 static inline void u132_endp_get_kref(struct u132 *u132, struct u132_endp *endp)
374 {
375 kref_get(&endp->kref);
376 }
377
u132_endp_init_kref(struct u132 * u132,struct u132_endp * endp)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
u132_endp_queue_work(struct u132 * u132,struct u132_endp * endp,unsigned int delta)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
u132_endp_cancel_work(struct u132 * u132,struct u132_endp * endp)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
u132_monitor_put_kref(struct u132 * u132)398 static inline void u132_monitor_put_kref(struct u132 *u132)
399 {
400 kref_put(&u132->kref, u132_hcd_delete);
401 }
402
u132_monitor_queue_work(struct u132 * u132,unsigned int delta)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
u132_monitor_requeue_work(struct u132 * u132,unsigned int delta)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
u132_monitor_cancel_work(struct u132 * u132)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
read_roothub_info(struct u132 * u132)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
u132_hcd_monitor_work(struct work_struct * work)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
u132_hcd_giveback_urb(struct u132 * u132,struct u132_endp * endp,struct urb * urb,int status)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
u132_hcd_forget_urb(struct u132 * u132,struct u132_endp * endp,struct urb * urb,int status)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
u132_hcd_abandon_urb(struct u132 * u132,struct u132_endp * endp,struct urb * urb,int status)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
edset_input(struct u132 * u132,struct u132_ring * ring,struct u132_endp * endp,struct urb * urb,u8 address,u8 toggle_bits,void (* callback)(void * endp,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null))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
edset_setup(struct u132 * u132,struct u132_ring * ring,struct u132_endp * endp,struct urb * urb,u8 address,u8 toggle_bits,void (* callback)(void * endp,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null))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
edset_single(struct u132 * u132,struct u132_ring * ring,struct u132_endp * endp,struct urb * urb,u8 address,u8 toggle_bits,void (* callback)(void * endp,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null))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
edset_output(struct u132 * u132,struct u132_ring * ring,struct u132_endp * endp,struct urb * urb,u8 address,u8 toggle_bits,void (* callback)(void * endp,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null))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 */
u132_hcd_interrupt_recv(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_bulk_output_sent(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_bulk_input_recv(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_configure_empty_sent(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_configure_input_recv(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_configure_empty_recv(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_configure_setup_sent(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_enumeration_empty_recv(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_enumeration_address_sent(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_initial_empty_sent(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_initial_input_recv(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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
u132_hcd_initial_setup_sent(void * data,struct urb * urb,u8 * buf,int len,int toggle_bits,int error_count,int condition_code,int repeat_number,int halted,int skipped,int actual,int non_null)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 */
u132_hcd_ring_work_scheduler(struct work_struct * work)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
u132_hcd_endp_work_scheduler(struct work_struct * work)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
port_power(struct u132 * u132,int pn,int is_on)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
u132_power(struct u132 * u132,int is_on)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
u132_periodic_reinit(struct u132 * u132)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
hcfs2string(int state)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
u132_init(struct u132 * u132)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 */
u132_run(struct u132 * u132)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
u132_hcd_stop(struct usb_hcd * hcd)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
u132_hcd_start(struct usb_hcd * hcd)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
u132_hcd_reset(struct usb_hcd * hcd)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
create_endpoint_and_queue_int(struct u132 * u132,struct u132_udev * udev,struct urb * urb,struct usb_device * usb_dev,u8 usb_addr,u8 usb_endp,u8 address,gfp_t mem_flags)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
queue_int_on_old_endpoint(struct u132 * u132,struct u132_udev * udev,struct urb * urb,struct usb_device * usb_dev,struct u132_endp * endp,u8 usb_addr,u8 usb_endp,u8 address)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
create_endpoint_and_queue_bulk(struct u132 * u132,struct u132_udev * udev,struct urb * urb,struct usb_device * usb_dev,u8 usb_addr,u8 usb_endp,u8 address,gfp_t mem_flags)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
queue_bulk_on_old_endpoint(struct u132 * u132,struct u132_udev * udev,struct urb * urb,struct usb_device * usb_dev,struct u132_endp * endp,u8 usb_addr,u8 usb_endp,u8 address)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
create_endpoint_and_queue_control(struct u132 * u132,struct urb * urb,struct usb_device * usb_dev,u8 usb_addr,u8 usb_endp,gfp_t mem_flags)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
queue_control_on_old_endpoint(struct u132 * u132,struct urb * urb,struct usb_device * usb_dev,struct u132_endp * endp,u8 usb_addr,u8 usb_endp)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
u132_urb_enqueue(struct usb_hcd * hcd,struct urb * urb,gfp_t mem_flags)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
dequeue_from_overflow_chain(struct u132 * u132,struct u132_endp * endp,struct urb * urb)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
u132_endp_urb_dequeue(struct u132 * u132,struct u132_endp * endp,struct urb * urb,int status)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
u132_urb_dequeue(struct usb_hcd * hcd,struct urb * urb,int status)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
u132_endpoint_disable(struct usb_hcd * hcd,struct usb_host_endpoint * hep)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
u132_get_frame(struct usb_hcd * hcd)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 dev_err(&u132->platform_dev->dev, "TODO: u132_get_frame\n");
2558 mdelay(100);
2559 return 0;
2560 }
2561 }
2562
u132_roothub_descriptor(struct u132 * u132,struct usb_hub_descriptor * desc)2563 static int u132_roothub_descriptor(struct u132 *u132,
2564 struct usb_hub_descriptor *desc)
2565 {
2566 int retval;
2567 u16 temp;
2568 u32 rh_a = -1;
2569 u32 rh_b = -1;
2570 retval = u132_read_pcimem(u132, roothub.a, &rh_a);
2571 if (retval)
2572 return retval;
2573 desc->bDescriptorType = USB_DT_HUB;
2574 desc->bPwrOn2PwrGood = (rh_a & RH_A_POTPGT) >> 24;
2575 desc->bHubContrCurrent = 0;
2576 desc->bNbrPorts = u132->num_ports;
2577 temp = 1 + (u132->num_ports / 8);
2578 desc->bDescLength = 7 + 2 * temp;
2579 temp = HUB_CHAR_COMMON_LPSM | HUB_CHAR_COMMON_OCPM;
2580 if (rh_a & RH_A_NPS)
2581 temp |= HUB_CHAR_NO_LPSM;
2582 if (rh_a & RH_A_PSM)
2583 temp |= HUB_CHAR_INDV_PORT_LPSM;
2584 if (rh_a & RH_A_NOCP)
2585 temp |= HUB_CHAR_NO_OCPM;
2586 else if (rh_a & RH_A_OCPM)
2587 temp |= HUB_CHAR_INDV_PORT_OCPM;
2588 desc->wHubCharacteristics = cpu_to_le16(temp);
2589 retval = u132_read_pcimem(u132, roothub.b, &rh_b);
2590 if (retval)
2591 return retval;
2592 memset(desc->u.hs.DeviceRemovable, 0xff,
2593 sizeof(desc->u.hs.DeviceRemovable));
2594 desc->u.hs.DeviceRemovable[0] = rh_b & RH_B_DR;
2595 if (u132->num_ports > 7) {
2596 desc->u.hs.DeviceRemovable[1] = (rh_b & RH_B_DR) >> 8;
2597 desc->u.hs.DeviceRemovable[2] = 0xff;
2598 } else
2599 desc->u.hs.DeviceRemovable[1] = 0xff;
2600 return 0;
2601 }
2602
u132_roothub_status(struct u132 * u132,__le32 * desc)2603 static int u132_roothub_status(struct u132 *u132, __le32 *desc)
2604 {
2605 u32 rh_status = -1;
2606 int ret_status = u132_read_pcimem(u132, roothub.status, &rh_status);
2607 *desc = cpu_to_le32(rh_status);
2608 return ret_status;
2609 }
2610
u132_roothub_portstatus(struct u132 * u132,__le32 * desc,u16 wIndex)2611 static int u132_roothub_portstatus(struct u132 *u132, __le32 *desc, u16 wIndex)
2612 {
2613 if (wIndex == 0 || wIndex > u132->num_ports) {
2614 return -EINVAL;
2615 } else {
2616 int port = wIndex - 1;
2617 u32 rh_portstatus = -1;
2618 int ret_portstatus = u132_read_pcimem(u132,
2619 roothub.portstatus[port], &rh_portstatus);
2620 *desc = cpu_to_le32(rh_portstatus);
2621 if (*(u16 *) (desc + 2)) {
2622 dev_info(&u132->platform_dev->dev, "Port %d Status Chan"
2623 "ge = %08X\n", port, *desc);
2624 }
2625 return ret_portstatus;
2626 }
2627 }
2628
2629
2630 /* this timer value might be vendor-specific ... */
2631 #define PORT_RESET_HW_MSEC 10
2632 #define PORT_RESET_MSEC 10
2633 /* wrap-aware logic morphed from <linux/jiffies.h> */
2634 #define tick_before(t1, t2) ((s16)(((s16)(t1))-((s16)(t2))) < 0)
u132_roothub_portreset(struct u132 * u132,int port_index)2635 static int u132_roothub_portreset(struct u132 *u132, int port_index)
2636 {
2637 int retval;
2638 u32 fmnumber;
2639 u16 now;
2640 u16 reset_done;
2641 retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2642 if (retval)
2643 return retval;
2644 now = fmnumber;
2645 reset_done = now + PORT_RESET_MSEC;
2646 do {
2647 u32 portstat;
2648 do {
2649 retval = u132_read_pcimem(u132,
2650 roothub.portstatus[port_index], &portstat);
2651 if (retval)
2652 return retval;
2653 if (RH_PS_PRS & portstat)
2654 continue;
2655 else
2656 break;
2657 } while (tick_before(now, reset_done));
2658 if (RH_PS_PRS & portstat)
2659 return -ENODEV;
2660 if (RH_PS_CCS & portstat) {
2661 if (RH_PS_PRSC & portstat) {
2662 retval = u132_write_pcimem(u132,
2663 roothub.portstatus[port_index],
2664 RH_PS_PRSC);
2665 if (retval)
2666 return retval;
2667 }
2668 } else
2669 break; /* start the next reset,
2670 sleep till it's probably done */
2671 retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
2672 RH_PS_PRS);
2673 if (retval)
2674 return retval;
2675 msleep(PORT_RESET_HW_MSEC);
2676 retval = u132_read_pcimem(u132, fmnumber, &fmnumber);
2677 if (retval)
2678 return retval;
2679 now = fmnumber;
2680 } while (tick_before(now, reset_done));
2681 return 0;
2682 }
2683
u132_roothub_setportfeature(struct u132 * u132,u16 wValue,u16 wIndex)2684 static int u132_roothub_setportfeature(struct u132 *u132, u16 wValue,
2685 u16 wIndex)
2686 {
2687 if (wIndex == 0 || wIndex > u132->num_ports) {
2688 return -EINVAL;
2689 } else {
2690 int port_index = wIndex - 1;
2691 struct u132_port *port = &u132->port[port_index];
2692 port->Status &= ~(1 << wValue);
2693 switch (wValue) {
2694 case USB_PORT_FEAT_SUSPEND:
2695 return u132_write_pcimem(u132,
2696 roothub.portstatus[port_index], RH_PS_PSS);
2697 case USB_PORT_FEAT_POWER:
2698 return u132_write_pcimem(u132,
2699 roothub.portstatus[port_index], RH_PS_PPS);
2700 case USB_PORT_FEAT_RESET:
2701 return u132_roothub_portreset(u132, port_index);
2702 default:
2703 return -EPIPE;
2704 }
2705 }
2706 }
2707
u132_roothub_clearportfeature(struct u132 * u132,u16 wValue,u16 wIndex)2708 static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
2709 u16 wIndex)
2710 {
2711 if (wIndex == 0 || wIndex > u132->num_ports) {
2712 return -EINVAL;
2713 } else {
2714 int port_index = wIndex - 1;
2715 u32 temp;
2716 struct u132_port *port = &u132->port[port_index];
2717 port->Status &= ~(1 << wValue);
2718 switch (wValue) {
2719 case USB_PORT_FEAT_ENABLE:
2720 temp = RH_PS_CCS;
2721 break;
2722 case USB_PORT_FEAT_C_ENABLE:
2723 temp = RH_PS_PESC;
2724 break;
2725 case USB_PORT_FEAT_SUSPEND:
2726 temp = RH_PS_POCI;
2727 if ((u132->hc_control & OHCI_CTRL_HCFS)
2728 != OHCI_USB_OPER) {
2729 dev_err(&u132->platform_dev->dev, "TODO resume_"
2730 "root_hub\n");
2731 }
2732 break;
2733 case USB_PORT_FEAT_C_SUSPEND:
2734 temp = RH_PS_PSSC;
2735 break;
2736 case USB_PORT_FEAT_POWER:
2737 temp = RH_PS_LSDA;
2738 break;
2739 case USB_PORT_FEAT_C_CONNECTION:
2740 temp = RH_PS_CSC;
2741 break;
2742 case USB_PORT_FEAT_C_OVER_CURRENT:
2743 temp = RH_PS_OCIC;
2744 break;
2745 case USB_PORT_FEAT_C_RESET:
2746 temp = RH_PS_PRSC;
2747 break;
2748 default:
2749 return -EPIPE;
2750 }
2751 return u132_write_pcimem(u132, roothub.portstatus[port_index],
2752 temp);
2753 }
2754 }
2755
2756
2757 /* the virtual root hub timer IRQ checks for hub status*/
u132_hub_status_data(struct usb_hcd * hcd,char * buf)2758 static int u132_hub_status_data(struct usb_hcd *hcd, char *buf)
2759 {
2760 struct u132 *u132 = hcd_to_u132(hcd);
2761 if (u132->going > 1) {
2762 dev_err(&u132->platform_dev->dev, "device hcd=%p has been remov"
2763 "ed %d\n", hcd, u132->going);
2764 return -ENODEV;
2765 } else if (u132->going > 0) {
2766 dev_err(&u132->platform_dev->dev, "device hcd=%p is being remov"
2767 "ed\n", hcd);
2768 return -ESHUTDOWN;
2769 } else {
2770 int i, changed = 0, length = 1;
2771 if (u132->flags & OHCI_QUIRK_AMD756) {
2772 if ((u132->hc_roothub_a & RH_A_NDP) > MAX_ROOT_PORTS) {
2773 dev_err(&u132->platform_dev->dev, "bogus NDP, r"
2774 "ereads as NDP=%d\n",
2775 u132->hc_roothub_a & RH_A_NDP);
2776 goto done;
2777 }
2778 }
2779 if (u132->hc_roothub_status & (RH_HS_LPSC | RH_HS_OCIC))
2780 buf[0] = changed = 1;
2781 else
2782 buf[0] = 0;
2783 if (u132->num_ports > 7) {
2784 buf[1] = 0;
2785 length++;
2786 }
2787 for (i = 0; i < u132->num_ports; i++) {
2788 if (u132->hc_roothub_portstatus[i] & (RH_PS_CSC |
2789 RH_PS_PESC | RH_PS_PSSC | RH_PS_OCIC |
2790 RH_PS_PRSC)) {
2791 changed = 1;
2792 if (i < 7)
2793 buf[0] |= 1 << (i + 1);
2794 else
2795 buf[1] |= 1 << (i - 7);
2796 continue;
2797 }
2798 if (!(u132->hc_roothub_portstatus[i] & RH_PS_CCS))
2799 continue;
2800
2801 if ((u132->hc_roothub_portstatus[i] & RH_PS_PSS))
2802 continue;
2803 }
2804 done:
2805 return changed ? length : 0;
2806 }
2807 }
2808
u132_hub_control(struct usb_hcd * hcd,u16 typeReq,u16 wValue,u16 wIndex,char * buf,u16 wLength)2809 static int u132_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2810 u16 wIndex, char *buf, u16 wLength)
2811 {
2812 struct u132 *u132 = hcd_to_u132(hcd);
2813 if (u132->going > 1) {
2814 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2815 , u132->going);
2816 return -ENODEV;
2817 } else if (u132->going > 0) {
2818 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2819 return -ESHUTDOWN;
2820 } else {
2821 int retval = 0;
2822 mutex_lock(&u132->sw_lock);
2823 switch (typeReq) {
2824 case ClearHubFeature:
2825 switch (wValue) {
2826 case C_HUB_OVER_CURRENT:
2827 case C_HUB_LOCAL_POWER:
2828 break;
2829 default:
2830 goto stall;
2831 }
2832 break;
2833 case SetHubFeature:
2834 switch (wValue) {
2835 case C_HUB_OVER_CURRENT:
2836 case C_HUB_LOCAL_POWER:
2837 break;
2838 default:
2839 goto stall;
2840 }
2841 break;
2842 case ClearPortFeature:{
2843 retval = u132_roothub_clearportfeature(u132,
2844 wValue, wIndex);
2845 if (retval)
2846 goto error;
2847 break;
2848 }
2849 case GetHubDescriptor:{
2850 retval = u132_roothub_descriptor(u132,
2851 (struct usb_hub_descriptor *)buf);
2852 if (retval)
2853 goto error;
2854 break;
2855 }
2856 case GetHubStatus:{
2857 retval = u132_roothub_status(u132,
2858 (__le32 *) buf);
2859 if (retval)
2860 goto error;
2861 break;
2862 }
2863 case GetPortStatus:{
2864 retval = u132_roothub_portstatus(u132,
2865 (__le32 *) buf, wIndex);
2866 if (retval)
2867 goto error;
2868 break;
2869 }
2870 case SetPortFeature:{
2871 retval = u132_roothub_setportfeature(u132,
2872 wValue, wIndex);
2873 if (retval)
2874 goto error;
2875 break;
2876 }
2877 default:
2878 goto stall;
2879 error:
2880 u132_disable(u132);
2881 u132->going = 1;
2882 break;
2883 stall:
2884 retval = -EPIPE;
2885 break;
2886 }
2887 mutex_unlock(&u132->sw_lock);
2888 return retval;
2889 }
2890 }
2891
u132_start_port_reset(struct usb_hcd * hcd,unsigned port_num)2892 static int u132_start_port_reset(struct usb_hcd *hcd, unsigned port_num)
2893 {
2894 struct u132 *u132 = hcd_to_u132(hcd);
2895 if (u132->going > 1) {
2896 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2897 , u132->going);
2898 return -ENODEV;
2899 } else if (u132->going > 0) {
2900 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2901 return -ESHUTDOWN;
2902 } else
2903 return 0;
2904 }
2905
2906
2907 #ifdef CONFIG_PM
u132_bus_suspend(struct usb_hcd * hcd)2908 static int u132_bus_suspend(struct usb_hcd *hcd)
2909 {
2910 struct u132 *u132 = hcd_to_u132(hcd);
2911 if (u132->going > 1) {
2912 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2913 , u132->going);
2914 return -ENODEV;
2915 } else if (u132->going > 0) {
2916 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2917 return -ESHUTDOWN;
2918 } else
2919 return 0;
2920 }
2921
u132_bus_resume(struct usb_hcd * hcd)2922 static int u132_bus_resume(struct usb_hcd *hcd)
2923 {
2924 struct u132 *u132 = hcd_to_u132(hcd);
2925 if (u132->going > 1) {
2926 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
2927 , u132->going);
2928 return -ENODEV;
2929 } else if (u132->going > 0) {
2930 dev_err(&u132->platform_dev->dev, "device is being removed\n");
2931 return -ESHUTDOWN;
2932 } else
2933 return 0;
2934 }
2935
2936 #else
2937 #define u132_bus_suspend NULL
2938 #define u132_bus_resume NULL
2939 #endif
2940 static const struct hc_driver u132_hc_driver = {
2941 .description = hcd_name,
2942 .hcd_priv_size = sizeof(struct u132),
2943 .irq = NULL,
2944 .flags = HCD_USB11 | HCD_MEMORY,
2945 .reset = u132_hcd_reset,
2946 .start = u132_hcd_start,
2947 .stop = u132_hcd_stop,
2948 .urb_enqueue = u132_urb_enqueue,
2949 .urb_dequeue = u132_urb_dequeue,
2950 .endpoint_disable = u132_endpoint_disable,
2951 .get_frame_number = u132_get_frame,
2952 .hub_status_data = u132_hub_status_data,
2953 .hub_control = u132_hub_control,
2954 .bus_suspend = u132_bus_suspend,
2955 .bus_resume = u132_bus_resume,
2956 .start_port_reset = u132_start_port_reset,
2957 };
2958
2959 /*
2960 * This function may be called by the USB core whilst the "usb_all_devices_rwsem"
2961 * is held for writing, thus this module must not call usb_remove_hcd()
2962 * synchronously - but instead should immediately stop activity to the
2963 * device and asynchronously call usb_remove_hcd()
2964 */
u132_remove(struct platform_device * pdev)2965 static int u132_remove(struct platform_device *pdev)
2966 {
2967 struct usb_hcd *hcd = platform_get_drvdata(pdev);
2968 if (hcd) {
2969 struct u132 *u132 = hcd_to_u132(hcd);
2970 if (u132->going++ > 1) {
2971 dev_err(&u132->platform_dev->dev, "already being remove"
2972 "d\n");
2973 return -ENODEV;
2974 } else {
2975 int rings = MAX_U132_RINGS;
2976 int endps = MAX_U132_ENDPS;
2977 dev_err(&u132->platform_dev->dev, "removing device u132"
2978 ".%d\n", u132->sequence_num);
2979 msleep(100);
2980 mutex_lock(&u132->sw_lock);
2981 u132_monitor_cancel_work(u132);
2982 while (rings-- > 0) {
2983 struct u132_ring *ring = &u132->ring[rings];
2984 u132_ring_cancel_work(u132, ring);
2985 }
2986 while (endps-- > 0) {
2987 struct u132_endp *endp = u132->endp[endps];
2988 if (endp)
2989 u132_endp_cancel_work(u132, endp);
2990 }
2991 u132->going += 1;
2992 printk(KERN_INFO "removing device u132.%d\n",
2993 u132->sequence_num);
2994 mutex_unlock(&u132->sw_lock);
2995 usb_remove_hcd(hcd);
2996 u132_u132_put_kref(u132);
2997 return 0;
2998 }
2999 } else
3000 return 0;
3001 }
3002
u132_initialise(struct u132 * u132,struct platform_device * pdev)3003 static void u132_initialise(struct u132 *u132, struct platform_device *pdev)
3004 {
3005 int rings = MAX_U132_RINGS;
3006 int ports = MAX_U132_PORTS;
3007 int addrs = MAX_U132_ADDRS;
3008 int udevs = MAX_U132_UDEVS;
3009 int endps = MAX_U132_ENDPS;
3010 u132->board = dev_get_platdata(&pdev->dev);
3011 u132->platform_dev = pdev;
3012 u132->power = 0;
3013 u132->reset = 0;
3014 mutex_init(&u132->sw_lock);
3015 mutex_init(&u132->scheduler_lock);
3016 while (rings-- > 0) {
3017 struct u132_ring *ring = &u132->ring[rings];
3018 ring->u132 = u132;
3019 ring->number = rings + 1;
3020 ring->length = 0;
3021 ring->curr_endp = NULL;
3022 INIT_DELAYED_WORK(&ring->scheduler,
3023 u132_hcd_ring_work_scheduler);
3024 }
3025 mutex_lock(&u132->sw_lock);
3026 INIT_DELAYED_WORK(&u132->monitor, u132_hcd_monitor_work);
3027 while (ports-- > 0) {
3028 struct u132_port *port = &u132->port[ports];
3029 port->u132 = u132;
3030 port->reset = 0;
3031 port->enable = 0;
3032 port->power = 0;
3033 port->Status = 0;
3034 }
3035 while (addrs-- > 0) {
3036 struct u132_addr *addr = &u132->addr[addrs];
3037 addr->address = 0;
3038 }
3039 while (udevs-- > 0) {
3040 struct u132_udev *udev = &u132->udev[udevs];
3041 int i = ARRAY_SIZE(udev->endp_number_in);
3042 int o = ARRAY_SIZE(udev->endp_number_out);
3043 udev->usb_device = NULL;
3044 udev->udev_number = 0;
3045 udev->usb_addr = 0;
3046 udev->portnumber = 0;
3047 while (i-- > 0)
3048 udev->endp_number_in[i] = 0;
3049
3050 while (o-- > 0)
3051 udev->endp_number_out[o] = 0;
3052
3053 }
3054 while (endps-- > 0)
3055 u132->endp[endps] = NULL;
3056
3057 mutex_unlock(&u132->sw_lock);
3058 }
3059
u132_probe(struct platform_device * pdev)3060 static int u132_probe(struct platform_device *pdev)
3061 {
3062 struct usb_hcd *hcd;
3063 int retval;
3064 u32 control;
3065 u32 rh_a = -1;
3066
3067 msleep(100);
3068 if (u132_exiting > 0)
3069 return -ENODEV;
3070
3071 retval = ftdi_write_pcimem(pdev, intrdisable, OHCI_INTR_MIE);
3072 if (retval)
3073 return retval;
3074 retval = ftdi_read_pcimem(pdev, control, &control);
3075 if (retval)
3076 return retval;
3077 retval = ftdi_read_pcimem(pdev, roothub.a, &rh_a);
3078 if (retval)
3079 return retval;
3080
3081 hcd = usb_create_hcd(&u132_hc_driver, &pdev->dev, dev_name(&pdev->dev));
3082 if (!hcd) {
3083 printk(KERN_ERR "failed to create the usb hcd struct for U132\n"
3084 );
3085 ftdi_elan_gone_away(pdev);
3086 return -ENOMEM;
3087 } else {
3088 struct u132 *u132 = hcd_to_u132(hcd);
3089 retval = 0;
3090 hcd->rsrc_start = 0;
3091 mutex_lock(&u132_module_lock);
3092 list_add_tail(&u132->u132_list, &u132_static_list);
3093 u132->sequence_num = ++u132_instances;
3094 mutex_unlock(&u132_module_lock);
3095 u132_u132_init_kref(u132);
3096 u132_initialise(u132, pdev);
3097 hcd->product_desc = "ELAN U132 Host Controller";
3098 retval = usb_add_hcd(hcd, 0, 0);
3099 if (retval != 0) {
3100 dev_err(&u132->platform_dev->dev, "init error %d\n",
3101 retval);
3102 u132_u132_put_kref(u132);
3103 return retval;
3104 } else {
3105 device_wakeup_enable(hcd->self.controller);
3106 u132_monitor_queue_work(u132, 100);
3107 return 0;
3108 }
3109 }
3110 }
3111
3112
3113 #ifdef CONFIG_PM
3114 /*
3115 * for this device there's no useful distinction between the controller
3116 * and its root hub.
3117 */
u132_suspend(struct platform_device * pdev,pm_message_t state)3118 static int u132_suspend(struct platform_device *pdev, pm_message_t state)
3119 {
3120 struct usb_hcd *hcd = platform_get_drvdata(pdev);
3121 struct u132 *u132 = hcd_to_u132(hcd);
3122 if (u132->going > 1) {
3123 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
3124 , u132->going);
3125 return -ENODEV;
3126 } else if (u132->going > 0) {
3127 dev_err(&u132->platform_dev->dev, "device is being removed\n");
3128 return -ESHUTDOWN;
3129 } else {
3130 int retval = 0, ports;
3131
3132 switch (state.event) {
3133 case PM_EVENT_FREEZE:
3134 retval = u132_bus_suspend(hcd);
3135 break;
3136 case PM_EVENT_SUSPEND:
3137 case PM_EVENT_HIBERNATE:
3138 ports = MAX_U132_PORTS;
3139 while (ports-- > 0) {
3140 port_power(u132, ports, 0);
3141 }
3142 break;
3143 }
3144 return retval;
3145 }
3146 }
3147
u132_resume(struct platform_device * pdev)3148 static int u132_resume(struct platform_device *pdev)
3149 {
3150 struct usb_hcd *hcd = platform_get_drvdata(pdev);
3151 struct u132 *u132 = hcd_to_u132(hcd);
3152 if (u132->going > 1) {
3153 dev_err(&u132->platform_dev->dev, "device has been removed %d\n"
3154 , u132->going);
3155 return -ENODEV;
3156 } else if (u132->going > 0) {
3157 dev_err(&u132->platform_dev->dev, "device is being removed\n");
3158 return -ESHUTDOWN;
3159 } else {
3160 int retval = 0;
3161 if (!u132->port[0].power) {
3162 int ports = MAX_U132_PORTS;
3163 while (ports-- > 0) {
3164 port_power(u132, ports, 1);
3165 }
3166 retval = 0;
3167 } else {
3168 retval = u132_bus_resume(hcd);
3169 }
3170 return retval;
3171 }
3172 }
3173
3174 #else
3175 #define u132_suspend NULL
3176 #define u132_resume NULL
3177 #endif
3178 /*
3179 * this driver is loaded explicitly by ftdi_u132
3180 *
3181 * the platform_driver struct is static because it is per type of module
3182 */
3183 static struct platform_driver u132_platform_driver = {
3184 .probe = u132_probe,
3185 .remove = u132_remove,
3186 .suspend = u132_suspend,
3187 .resume = u132_resume,
3188 .driver = {
3189 .name = hcd_name,
3190 },
3191 };
u132_hcd_init(void)3192 static int __init u132_hcd_init(void)
3193 {
3194 int retval;
3195 INIT_LIST_HEAD(&u132_static_list);
3196 u132_instances = 0;
3197 u132_exiting = 0;
3198 mutex_init(&u132_module_lock);
3199 if (usb_disabled())
3200 return -ENODEV;
3201 printk(KERN_INFO "driver %s\n", hcd_name);
3202 workqueue = create_singlethread_workqueue("u132");
3203 if (!workqueue)
3204 return -ENOMEM;
3205 retval = platform_driver_register(&u132_platform_driver);
3206 if (retval)
3207 destroy_workqueue(workqueue);
3208
3209 return retval;
3210 }
3211
3212
3213 module_init(u132_hcd_init);
u132_hcd_exit(void)3214 static void __exit u132_hcd_exit(void)
3215 {
3216 struct u132 *u132;
3217 struct u132 *temp;
3218 mutex_lock(&u132_module_lock);
3219 u132_exiting += 1;
3220 mutex_unlock(&u132_module_lock);
3221 list_for_each_entry_safe(u132, temp, &u132_static_list, u132_list) {
3222 platform_device_unregister(u132->platform_dev);
3223 }
3224 platform_driver_unregister(&u132_platform_driver);
3225 printk(KERN_INFO "u132-hcd driver deregistered\n");
3226 wait_event(u132_hcd_wait, u132_instances == 0);
3227 flush_workqueue(workqueue);
3228 destroy_workqueue(workqueue);
3229 }
3230
3231
3232 module_exit(u132_hcd_exit);
3233 MODULE_LICENSE("GPL");
3234 MODULE_ALIAS("platform:u132_hcd");
3235