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usb host: fix platform driver hotplug/coldplug
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / host / r8a66597-hcd.c
blob9f80e528557529c9a33f2da13085b546872028ec
1 /*
2 * R8A66597 HCD (Host Controller Driver)
3 *
4 * Copyright (C) 2006-2007 Renesas Solutions Corp.
5 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
6 * Portions Copyright (C) 2004-2005 David Brownell
7 * Portions Copyright (C) 1999 Roman Weissgaerber
8 *
9 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26 #include <linux/module.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/smp_lock.h>
30 #include <linux/errno.h>
31 #include <linux/init.h>
32 #include <linux/timer.h>
33 #include <linux/delay.h>
34 #include <linux/list.h>
35 #include <linux/interrupt.h>
36 #include <linux/usb.h>
37 #include <linux/platform_device.h>
38 #include <linux/io.h>
39 #include <linux/irq.h>
40
41 #include "../core/hcd.h"
42 #include "r8a66597.h"
43
44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_AUTHOR("Yoshihiro Shimoda");
47 MODULE_ALIAS("platform:r8a66597_hcd");
48
49 #define DRIVER_VERSION "29 May 2007"
50
51 static const char hcd_name[] = "r8a66597_hcd";
52
53 /* module parameters */
54 static unsigned short clock = XTAL12;
55 module_param(clock, ushort, 0644);
56 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
57 "(default=0)");
58
59 static unsigned short vif = LDRV;
60 module_param(vif, ushort, 0644);
61 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
62
63 static unsigned short endian;
64 module_param(endian, ushort, 0644);
65 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
66
67 static unsigned short irq_sense = INTL;
68 module_param(irq_sense, ushort, 0644);
69 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
70 "(default=32)");
71
72 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
73 static int r8a66597_get_frame(struct usb_hcd *hcd);
74
75 /* this function must be called with interrupt disabled */
76 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
77 unsigned long reg)
78 {
79 u16 tmp;
80
81 tmp = r8a66597_read(r8a66597, INTENB0);
82 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
83 r8a66597_bset(r8a66597, 1 << pipenum, reg);
84 r8a66597_write(r8a66597, tmp, INTENB0);
85 }
86
87 /* this function must be called with interrupt disabled */
88 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
89 unsigned long reg)
90 {
91 u16 tmp;
92
93 tmp = r8a66597_read(r8a66597, INTENB0);
94 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
95 r8a66597_bclr(r8a66597, 1 << pipenum, reg);
96 r8a66597_write(r8a66597, tmp, INTENB0);
97 }
98
99 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
100 u16 usbspd, u8 upphub, u8 hubport, int port)
101 {
102 u16 val;
103 unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
104
105 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
106 r8a66597_write(r8a66597, val, devadd_reg);
107 }
108
109 static int enable_controller(struct r8a66597 *r8a66597)
110 {
111 u16 tmp;
112 int i = 0;
113
114 do {
115 r8a66597_write(r8a66597, USBE, SYSCFG0);
116 tmp = r8a66597_read(r8a66597, SYSCFG0);
117 if (i++ > 1000) {
118 err("register access fail.");
119 return -ENXIO;
120 }
121 } while ((tmp & USBE) != USBE);
122 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
123 r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
124
125 i = 0;
126 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
127 do {
128 msleep(1);
129 tmp = r8a66597_read(r8a66597, SYSCFG0);
130 if (i++ > 500) {
131 err("register access fail.");
132 return -ENXIO;
133 }
134 } while ((tmp & SCKE) != SCKE);
135
136 r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
137 r8a66597_bset(r8a66597, DRPD, SYSCFG1);
138
139 r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
140 r8a66597_bset(r8a66597, HSE, SYSCFG0);
141 r8a66597_bset(r8a66597, HSE, SYSCFG1);
142 r8a66597_bset(r8a66597, USBE, SYSCFG0);
143
144 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
145 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
146 r8a66597_bset(r8a66597, BRDY0, BRDYENB);
147 r8a66597_bset(r8a66597, BEMP0, BEMPENB);
148
149 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
150 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
151
152 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
153 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
154 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
155
156 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
157
158 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
159 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
160 r8a66597_bset(r8a66597, ATTCHE, INTENB1);
161 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
162 r8a66597_bset(r8a66597, ATTCHE, INTENB2);
163
164 return 0;
165 }
166
167 static void disable_controller(struct r8a66597 *r8a66597)
168 {
169 u16 tmp;
170
171 r8a66597_write(r8a66597, 0, INTENB0);
172 r8a66597_write(r8a66597, 0, INTENB1);
173 r8a66597_write(r8a66597, 0, INTENB2);
174 r8a66597_write(r8a66597, 0, INTSTS0);
175 r8a66597_write(r8a66597, 0, INTSTS1);
176 r8a66597_write(r8a66597, 0, INTSTS2);
177
178 r8a66597_port_power(r8a66597, 0, 0);
179 r8a66597_port_power(r8a66597, 1, 0);
180
181 do {
182 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
183 udelay(640);
184 } while (tmp == EDGESTS);
185
186 r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
187 r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
188 r8a66597_bclr(r8a66597, HSE, SYSCFG0);
189 r8a66597_bclr(r8a66597, HSE, SYSCFG1);
190
191 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
192 udelay(1);
193 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
194 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
195 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
196 }
197
198 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
199 struct usb_device *udev)
200 {
201 struct r8a66597_device *dev;
202
203 if (udev->parent && udev->parent->devnum != 1)
204 udev = udev->parent;
205
206 dev = dev_get_drvdata(&udev->dev);
207 if (dev)
208 return dev->address;
209 else
210 return 0;
211 }
212
213 static int is_child_device(char *devpath)
214 {
215 return (devpath[2] ? 1 : 0);
216 }
217
218 static int is_hub_limit(char *devpath)
219 {
220 return ((strlen(devpath) >= 4) ? 1 : 0);
221 }
222
223 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
224 {
225 if (root_port) {
226 *root_port = (devpath[0] & 0x0F) - 1;
227 if (*root_port >= R8A66597_MAX_ROOT_HUB)
228 err("illegal root port number");
229 }
230 if (hub_port)
231 *hub_port = devpath[2] & 0x0F;
232 }
233
234 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
235 {
236 u16 usbspd = 0;
237
238 switch (speed) {
239 case USB_SPEED_LOW:
240 usbspd = LSMODE;
241 break;
242 case USB_SPEED_FULL:
243 usbspd = FSMODE;
244 break;
245 case USB_SPEED_HIGH:
246 usbspd = HSMODE;
247 break;
248 default:
249 err("unknown speed");
250 break;
251 }
252
253 return usbspd;
254 }
255
256 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
257 {
258 int idx;
259
260 idx = address / 32;
261 r8a66597->child_connect_map[idx] |= 1 << (address % 32);
262 }
263
264 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
265 {
266 int idx;
267
268 idx = address / 32;
269 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
270 }
271
272 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
273 {
274 u16 pipenum = pipe->info.pipenum;
275 unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
276 unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
277 unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
278
279 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
280 dma_ch = R8A66597_PIPE_NO_DMA;
281
282 pipe->fifoaddr = fifoaddr[dma_ch];
283 pipe->fifosel = fifosel[dma_ch];
284 pipe->fifoctr = fifoctr[dma_ch];
285
286 if (pipenum == 0)
287 pipe->pipectr = DCPCTR;
288 else
289 pipe->pipectr = get_pipectr_addr(pipenum);
290
291 if (check_bulk_or_isoc(pipenum)) {
292 pipe->pipetre = get_pipetre_addr(pipenum);
293 pipe->pipetrn = get_pipetrn_addr(pipenum);
294 } else {
295 pipe->pipetre = 0;
296 pipe->pipetrn = 0;
297 }
298 }
299
300 static struct r8a66597_device *
301 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
302 {
303 if (usb_pipedevice(urb->pipe) == 0)
304 return &r8a66597->device0;
305
306 return dev_get_drvdata(&urb->dev->dev);
307 }
308
309 static int make_r8a66597_device(struct r8a66597 *r8a66597,
310 struct urb *urb, u8 addr)
311 {
312 struct r8a66597_device *dev;
313 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
314
315 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
316 if (dev == NULL)
317 return -ENOMEM;
318
319 dev_set_drvdata(&urb->dev->dev, dev);
320 dev->udev = urb->dev;
321 dev->address = addr;
322 dev->usb_address = usb_address;
323 dev->state = USB_STATE_ADDRESS;
324 dev->ep_in_toggle = 0;
325 dev->ep_out_toggle = 0;
326 INIT_LIST_HEAD(&dev->device_list);
327 list_add_tail(&dev->device_list, &r8a66597->child_device);
328
329 get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
330 if (!is_child_device(urb->dev->devpath))
331 r8a66597->root_hub[dev->root_port].dev = dev;
332
333 set_devadd_reg(r8a66597, dev->address,
334 get_r8a66597_usb_speed(urb->dev->speed),
335 get_parent_r8a66597_address(r8a66597, urb->dev),
336 dev->hub_port, dev->root_port);
337
338 return 0;
339 }
340
341 /* this function must be called with interrupt disabled */
342 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
343 {
344 u8 addr; /* R8A66597's address */
345 struct r8a66597_device *dev;
346
347 if (is_hub_limit(urb->dev->devpath)) {
348 err("Externel hub limit reached.");
349 return 0;
350 }
351
352 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
353 if (dev && dev->state >= USB_STATE_ADDRESS)
354 return dev->address;
355
356 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
357 if (r8a66597->address_map & (1 << addr))
358 continue;
359
360 dbg("alloc_address: r8a66597_addr=%d", addr);
361 r8a66597->address_map |= 1 << addr;
362
363 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
364 return 0;
365
366 return addr;
367 }
368
369 err("cannot communicate with a USB device more than 10.(%x)",
370 r8a66597->address_map);
371
372 return 0;
373 }
374
375 /* this function must be called with interrupt disabled */
376 static void free_usb_address(struct r8a66597 *r8a66597,
377 struct r8a66597_device *dev)
378 {
379 int port;
380
381 if (!dev)
382 return;
383
384 dbg("free_addr: addr=%d", dev->address);
385
386 dev->state = USB_STATE_DEFAULT;
387 r8a66597->address_map &= ~(1 << dev->address);
388 dev->address = 0;
389 dev_set_drvdata(&dev->udev->dev, NULL);
390 list_del(&dev->device_list);
391 kfree(dev);
392
393 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
394 if (r8a66597->root_hub[port].dev == dev) {
395 r8a66597->root_hub[port].dev = NULL;
396 break;
397 }
398 }
399 }
400
401 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
402 u16 mask, u16 loop)
403 {
404 u16 tmp;
405 int i = 0;
406
407 do {
408 tmp = r8a66597_read(r8a66597, reg);
409 if (i++ > 1000000) {
410 err("register%lx, loop %x is timeout", reg, loop);
411 break;
412 }
413 ndelay(1);
414 } while ((tmp & mask) != loop);
415 }
416
417 /* this function must be called with interrupt disabled */
418 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
419 {
420 u16 tmp;
421
422 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
423 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
424 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
425 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
426 }
427
428 /* this function must be called with interrupt disabled */
429 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
430 {
431 u16 tmp;
432
433 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
434 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
435 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
436 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
437 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
438 }
439
440 /* this function must be called with interrupt disabled */
441 static void clear_all_buffer(struct r8a66597 *r8a66597,
442 struct r8a66597_pipe *pipe)
443 {
444 u16 tmp;
445
446 if (!pipe || pipe->info.pipenum == 0)
447 return;
448
449 pipe_stop(r8a66597, pipe);
450 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
451 tmp = r8a66597_read(r8a66597, pipe->pipectr);
452 tmp = r8a66597_read(r8a66597, pipe->pipectr);
453 tmp = r8a66597_read(r8a66597, pipe->pipectr);
454 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
455 }
456
457 /* this function must be called with interrupt disabled */
458 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
459 struct r8a66597_pipe *pipe, int toggle)
460 {
461 if (toggle)
462 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
463 else
464 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
465 }
466
467 /* this function must be called with interrupt disabled */
468 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
469 {
470 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
471 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
472 }
473
474 /* this function must be called with interrupt disabled */
475 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
476 struct r8a66597_pipe *pipe)
477 {
478 cfifo_change(r8a66597, 0);
479 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
480 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
481
482 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
483 pipe->fifosel);
484 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
485 }
486
487 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
488 {
489 struct r8a66597_pipe *pipe = hep->hcpriv;
490
491 if (usb_pipeendpoint(urb->pipe) == 0)
492 return 0;
493 else
494 return pipe->info.pipenum;
495 }
496
497 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
498 {
499 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
500
501 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
502 }
503
504 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
505 int urb_pipe)
506 {
507 if (!dev)
508 return NULL;
509
510 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
511 }
512
513 /* this function must be called with interrupt disabled */
514 static void pipe_toggle_set(struct r8a66597 *r8a66597,
515 struct r8a66597_pipe *pipe,
516 struct urb *urb, int set)
517 {
518 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
519 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
520 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
521
522 if (!toggle)
523 return;
524
525 if (set)
526 *toggle |= 1 << endpoint;
527 else
528 *toggle &= ~(1 << endpoint);
529 }
530
531 /* this function must be called with interrupt disabled */
532 static void pipe_toggle_save(struct r8a66597 *r8a66597,
533 struct r8a66597_pipe *pipe,
534 struct urb *urb)
535 {
536 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
537 pipe_toggle_set(r8a66597, pipe, urb, 1);
538 else
539 pipe_toggle_set(r8a66597, pipe, urb, 0);
540 }
541
542 /* this function must be called with interrupt disabled */
543 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
544 struct r8a66597_pipe *pipe,
545 struct urb *urb)
546 {
547 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
548 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
549 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
550
551 if (!toggle)
552 return;
553
554 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
555 }
556
557 /* this function must be called with interrupt disabled */
558 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
559 struct r8a66597_pipe_info *info)
560 {
561 u16 val = 0;
562
563 if (info->pipenum == 0)
564 return;
565
566 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
567 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
568 r8a66597_write(r8a66597, info->pipenum, PIPESEL);
569 if (!info->dir_in)
570 val |= R8A66597_DIR;
571 if (info->type == R8A66597_BULK && info->dir_in)
572 val |= R8A66597_DBLB | R8A66597_SHTNAK;
573 val |= info->type | info->epnum;
574 r8a66597_write(r8a66597, val, PIPECFG);
575
576 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
577 PIPEBUF);
578 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
579 PIPEMAXP);
580 if (info->interval)
581 info->interval--;
582 r8a66597_write(r8a66597, info->interval, PIPEPERI);
583 }
584
585
586
587 /* this function must be called with interrupt disabled */
588 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
589 {
590 struct r8a66597_pipe_info *info;
591 struct urb *urb = td->urb;
592
593 if (td->pipenum > 0) {
594 info = &td->pipe->info;
595 cfifo_change(r8a66597, 0);
596 pipe_buffer_setting(r8a66597, info);
597
598 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
599 usb_pipeout(urb->pipe)) &&
600 !usb_pipecontrol(urb->pipe)) {
601 r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
602 pipe_toggle_set(r8a66597, td->pipe, urb, 0);
603 clear_all_buffer(r8a66597, td->pipe);
604 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
605 usb_pipeout(urb->pipe), 1);
606 }
607 pipe_toggle_restore(r8a66597, td->pipe, urb);
608 }
609 }
610
611 /* this function must be called with interrupt disabled */
612 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
613 struct usb_endpoint_descriptor *ep)
614 {
615 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
616
617 memset(array, 0, sizeof(array));
618 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
619 case USB_ENDPOINT_XFER_BULK:
620 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
621 array[i++] = 4;
622 else {
623 array[i++] = 3;
624 array[i++] = 5;
625 }
626 break;
627 case USB_ENDPOINT_XFER_INT:
628 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
629 array[i++] = 6;
630 array[i++] = 7;
631 array[i++] = 8;
632 } else
633 array[i++] = 9;
634 break;
635 case USB_ENDPOINT_XFER_ISOC:
636 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
637 array[i++] = 2;
638 else
639 array[i++] = 1;
640 break;
641 default:
642 err("Illegal type");
643 return 0;
644 }
645
646 i = 1;
647 min = array[0];
648 while (array[i] != 0) {
649 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
650 min = array[i];
651 i++;
652 }
653
654 return min;
655 }
656
657 static u16 get_r8a66597_type(__u8 type)
658 {
659 u16 r8a66597_type;
660
661 switch (type) {
662 case USB_ENDPOINT_XFER_BULK:
663 r8a66597_type = R8A66597_BULK;
664 break;
665 case USB_ENDPOINT_XFER_INT:
666 r8a66597_type = R8A66597_INT;
667 break;
668 case USB_ENDPOINT_XFER_ISOC:
669 r8a66597_type = R8A66597_ISO;
670 break;
671 default:
672 err("Illegal type");
673 r8a66597_type = 0x0000;
674 break;
675 }
676
677 return r8a66597_type;
678 }
679
680 static u16 get_bufnum(u16 pipenum)
681 {
682 u16 bufnum = 0;
683
684 if (pipenum == 0)
685 bufnum = 0;
686 else if (check_bulk_or_isoc(pipenum))
687 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
688 else if (check_interrupt(pipenum))
689 bufnum = 4 + (pipenum - 6);
690 else
691 err("Illegal pipenum (%d)", pipenum);
692
693 return bufnum;
694 }
695
696 static u16 get_buf_bsize(u16 pipenum)
697 {
698 u16 buf_bsize = 0;
699
700 if (pipenum == 0)
701 buf_bsize = 3;
702 else if (check_bulk_or_isoc(pipenum))
703 buf_bsize = R8A66597_BUF_BSIZE - 1;
704 else if (check_interrupt(pipenum))
705 buf_bsize = 0;
706 else
707 err("Illegal pipenum (%d)", pipenum);
708
709 return buf_bsize;
710 }
711
712 /* this function must be called with interrupt disabled */
713 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
714 struct r8a66597_device *dev,
715 struct r8a66597_pipe *pipe,
716 struct urb *urb)
717 {
718 int i;
719 struct r8a66597_pipe_info *info = &pipe->info;
720
721 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
722 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
723 if ((r8a66597->dma_map & (1 << i)) != 0)
724 continue;
725
726 info("address %d, EndpointAddress 0x%02x use DMA FIFO",
727 usb_pipedevice(urb->pipe),
728 info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
729 : info->epnum);
730
731 r8a66597->dma_map |= 1 << i;
732 dev->dma_map |= 1 << i;
733 set_pipe_reg_addr(pipe, i);
734
735 cfifo_change(r8a66597, 0);
736 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
737 MBW | CURPIPE, pipe->fifosel);
738
739 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
740 pipe->info.pipenum);
741 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
742 break;
743 }
744 }
745 }
746
747 /* this function must be called with interrupt disabled */
748 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
749 struct usb_host_endpoint *hep,
750 struct r8a66597_pipe_info *info)
751 {
752 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
753 struct r8a66597_pipe *pipe = hep->hcpriv;
754
755 dbg("enable_pipe:");
756
757 pipe->info = *info;
758 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
759 r8a66597->pipe_cnt[pipe->info.pipenum]++;
760 dev->pipe_cnt[pipe->info.pipenum]++;
761
762 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
763 }
764
765 /* this function must be called with interrupt disabled */
766 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
767 {
768 struct r8a66597_td *td, *next;
769 struct urb *urb;
770 struct list_head *list = &r8a66597->pipe_queue[pipenum];
771
772 if (list_empty(list))
773 return;
774
775 list_for_each_entry_safe(td, next, list, queue) {
776 if (!td)
777 continue;
778 if (td->address != address)
779 continue;
780
781 urb = td->urb;
782 list_del(&td->queue);
783 kfree(td);
784
785 if (urb) {
786 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
787 urb);
788
789 spin_unlock(&r8a66597->lock);
790 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
791 -ENODEV);
792 spin_lock(&r8a66597->lock);
793 }
794 break;
795 }
796 }
797
798 /* this function must be called with interrupt disabled */
799 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
800 struct r8a66597_device *dev)
801 {
802 int check_ep0 = 0;
803 u16 pipenum;
804
805 if (!dev)
806 return;
807
808 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
809 if (!dev->pipe_cnt[pipenum])
810 continue;
811
812 if (!check_ep0) {
813 check_ep0 = 1;
814 force_dequeue(r8a66597, 0, dev->address);
815 }
816
817 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
818 dev->pipe_cnt[pipenum] = 0;
819 force_dequeue(r8a66597, pipenum, dev->address);
820 }
821
822 dbg("disable_pipe");
823
824 r8a66597->dma_map &= ~(dev->dma_map);
825 dev->dma_map = 0;
826 }
827
828 /* this function must be called with interrupt disabled */
829 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
830 struct usb_host_endpoint *hep,
831 struct usb_endpoint_descriptor *ep)
832 {
833 struct r8a66597_pipe_info info;
834
835 info.pipenum = get_empty_pipenum(r8a66597, ep);
836 info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
837 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
838 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
839 info.type = get_r8a66597_type(ep->bmAttributes
840 & USB_ENDPOINT_XFERTYPE_MASK);
841 info.bufnum = get_bufnum(info.pipenum);
842 info.buf_bsize = get_buf_bsize(info.pipenum);
843 info.interval = ep->bInterval;
844 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
845 info.dir_in = 1;
846 else
847 info.dir_in = 0;
848
849 enable_r8a66597_pipe(r8a66597, urb, hep, &info);
850 }
851
852 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
853 {
854 struct r8a66597_device *dev;
855
856 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
857 dev->state = USB_STATE_CONFIGURED;
858 }
859
860 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
861 u16 pipenum)
862 {
863 if (pipenum == 0 && usb_pipeout(urb->pipe))
864 enable_irq_empty(r8a66597, pipenum);
865 else
866 enable_irq_ready(r8a66597, pipenum);
867
868 if (!usb_pipeisoc(urb->pipe))
869 enable_irq_nrdy(r8a66597, pipenum);
870 }
871
872 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
873 {
874 disable_irq_ready(r8a66597, pipenum);
875 disable_irq_nrdy(r8a66597, pipenum);
876 }
877
878 /* this function must be called with interrupt disabled */
879 static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
880 {
881 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
882 | (1 << USB_PORT_FEAT_C_CONNECTION);
883 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
884 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
885 }
886
887 /* this function must be called with interrupt disabled */
888 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
889 {
890 u16 speed = get_rh_usb_speed(r8a66597, port);
891 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
892
893 if (speed == HSMODE)
894 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
895 else if (speed == LSMODE)
896 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
897
898 rh->port &= ~(1 << USB_PORT_FEAT_RESET);
899 rh->port |= 1 << USB_PORT_FEAT_ENABLE;
900 }
901
902 /* this function must be called with interrupt disabled */
903 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
904 {
905 struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
906
907 r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
908 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
909
910 disable_r8a66597_pipe_all(r8a66597, dev);
911 free_usb_address(r8a66597, dev);
912
913 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
914 }
915
916 /* this function must be called with interrupt disabled */
917 static void prepare_setup_packet(struct r8a66597 *r8a66597,
918 struct r8a66597_td *td)
919 {
920 int i;
921 u16 *p = (u16 *)td->urb->setup_packet;
922 unsigned long setup_addr = USBREQ;
923
924 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
925 DCPMAXP);
926 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
927
928 for (i = 0; i < 4; i++) {
929 r8a66597_write(r8a66597, cpu_to_le16(p[i]), setup_addr);
930 setup_addr += 2;
931 }
932 r8a66597_write(r8a66597, SUREQ, DCPCTR);
933 }
934
935 /* this function must be called with interrupt disabled */
936 static void prepare_packet_read(struct r8a66597 *r8a66597,
937 struct r8a66597_td *td)
938 {
939 struct urb *urb = td->urb;
940
941 if (usb_pipecontrol(urb->pipe)) {
942 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
943 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
944 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
945 if (urb->actual_length == 0) {
946 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
947 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
948 }
949 pipe_irq_disable(r8a66597, td->pipenum);
950 pipe_start(r8a66597, td->pipe);
951 pipe_irq_enable(r8a66597, urb, td->pipenum);
952 } else {
953 if (urb->actual_length == 0) {
954 pipe_irq_disable(r8a66597, td->pipenum);
955 pipe_setting(r8a66597, td);
956 pipe_stop(r8a66597, td->pipe);
957 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
958
959 if (td->pipe->pipetre) {
960 r8a66597_write(r8a66597, TRCLR,
961 td->pipe->pipetre);
962 r8a66597_write(r8a66597,
963 (urb->transfer_buffer_length
964 + td->maxpacket - 1)
965 / td->maxpacket,
966 td->pipe->pipetrn);
967 r8a66597_bset(r8a66597, TRENB,
968 td->pipe->pipetre);
969 }
970
971 pipe_start(r8a66597, td->pipe);
972 pipe_irq_enable(r8a66597, urb, td->pipenum);
973 }
974 }
975 }
976
977 /* this function must be called with interrupt disabled */
978 static void prepare_packet_write(struct r8a66597 *r8a66597,
979 struct r8a66597_td *td)
980 {
981 u16 tmp;
982 struct urb *urb = td->urb;
983
984 if (usb_pipecontrol(urb->pipe)) {
985 pipe_stop(r8a66597, td->pipe);
986 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
987 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
988 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
989 if (urb->actual_length == 0) {
990 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
991 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
992 }
993 } else {
994 if (urb->actual_length == 0)
995 pipe_setting(r8a66597, td);
996 if (td->pipe->pipetre)
997 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
998 }
999 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1000
1001 fifo_change_from_pipe(r8a66597, td->pipe);
1002 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1003 if (unlikely((tmp & FRDY) == 0))
1004 pipe_irq_enable(r8a66597, urb, td->pipenum);
1005 else
1006 packet_write(r8a66597, td->pipenum);
1007 pipe_start(r8a66597, td->pipe);
1008 }
1009
1010 /* this function must be called with interrupt disabled */
1011 static void prepare_status_packet(struct r8a66597 *r8a66597,
1012 struct r8a66597_td *td)
1013 {
1014 struct urb *urb = td->urb;
1015
1016 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1017 pipe_stop(r8a66597, td->pipe);
1018
1019 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1020 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1021 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1022 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1023 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1024 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1025 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
1026 enable_irq_empty(r8a66597, 0);
1027 } else {
1028 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1029 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1030 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1031 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1032 enable_irq_ready(r8a66597, 0);
1033 }
1034 enable_irq_nrdy(r8a66597, 0);
1035 pipe_start(r8a66597, td->pipe);
1036 }
1037
1038 static int is_set_address(unsigned char *setup_packet)
1039 {
1040 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1041 setup_packet[1] == USB_REQ_SET_ADDRESS)
1042 return 1;
1043 else
1044 return 0;
1045 }
1046
1047 /* this function must be called with interrupt disabled */
1048 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1049 {
1050 BUG_ON(!td);
1051
1052 switch (td->type) {
1053 case USB_PID_SETUP:
1054 if (is_set_address(td->urb->setup_packet)) {
1055 td->set_address = 1;
1056 td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1057 td->urb);
1058 if (td->urb->setup_packet[2] == 0)
1059 return -EPIPE;
1060 }
1061 prepare_setup_packet(r8a66597, td);
1062 break;
1063 case USB_PID_IN:
1064 prepare_packet_read(r8a66597, td);
1065 break;
1066 case USB_PID_OUT:
1067 prepare_packet_write(r8a66597, td);
1068 break;
1069 case USB_PID_ACK:
1070 prepare_status_packet(r8a66597, td);
1071 break;
1072 default:
1073 err("invalid type.");
1074 break;
1075 }
1076
1077 return 0;
1078 }
1079
1080 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1081 {
1082 if (usb_pipeisoc(urb->pipe)) {
1083 if (urb->number_of_packets == td->iso_cnt)
1084 return 1;
1085 }
1086
1087 /* control or bulk or interrupt */
1088 if ((urb->transfer_buffer_length <= urb->actual_length) ||
1089 (td->short_packet) || (td->zero_packet))
1090 return 1;
1091
1092 return 0;
1093 }
1094
1095 /* this function must be called with interrupt disabled */
1096 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1097 {
1098 unsigned long time;
1099
1100 BUG_ON(!td);
1101
1102 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1103 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1104 r8a66597->timeout_map |= 1 << td->pipenum;
1105 switch (usb_pipetype(td->urb->pipe)) {
1106 case PIPE_INTERRUPT:
1107 case PIPE_ISOCHRONOUS:
1108 time = 30;
1109 break;
1110 default:
1111 time = 300;
1112 break;
1113 }
1114
1115 mod_timer(&r8a66597->td_timer[td->pipenum],
1116 jiffies + msecs_to_jiffies(time));
1117 }
1118 }
1119
1120 /* this function must be called with interrupt disabled */
1121 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1122 u16 pipenum, struct urb *urb, int status)
1123 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1124 {
1125 int restart = 0;
1126 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1127
1128 r8a66597->timeout_map &= ~(1 << pipenum);
1129
1130 if (likely(td)) {
1131 if (td->set_address && (status != 0 || urb->unlinked))
1132 r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1133
1134 pipe_toggle_save(r8a66597, td->pipe, urb);
1135 list_del(&td->queue);
1136 kfree(td);
1137 }
1138
1139 if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1140 restart = 1;
1141
1142 if (likely(urb)) {
1143 if (usb_pipeisoc(urb->pipe))
1144 urb->start_frame = r8a66597_get_frame(hcd);
1145
1146 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1147 spin_unlock(&r8a66597->lock);
1148 usb_hcd_giveback_urb(hcd, urb, status);
1149 spin_lock(&r8a66597->lock);
1150 }
1151
1152 if (restart) {
1153 td = r8a66597_get_td(r8a66597, pipenum);
1154 if (unlikely(!td))
1155 return;
1156
1157 start_transfer(r8a66597, td);
1158 set_td_timer(r8a66597, td);
1159 }
1160 }
1161
1162 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1163 {
1164 u16 tmp;
1165 int rcv_len, bufsize, urb_len, size;
1166 u16 *buf;
1167 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1168 struct urb *urb;
1169 int finish = 0;
1170 int status = 0;
1171
1172 if (unlikely(!td))
1173 return;
1174 urb = td->urb;
1175
1176 fifo_change_from_pipe(r8a66597, td->pipe);
1177 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1178 if (unlikely((tmp & FRDY) == 0)) {
1179 pipe_stop(r8a66597, td->pipe);
1180 pipe_irq_disable(r8a66597, pipenum);
1181 err("in fifo not ready (%d)", pipenum);
1182 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1183 return;
1184 }
1185
1186 /* prepare parameters */
1187 rcv_len = tmp & DTLN;
1188 if (usb_pipeisoc(urb->pipe)) {
1189 buf = (u16 *)(urb->transfer_buffer +
1190 urb->iso_frame_desc[td->iso_cnt].offset);
1191 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1192 } else {
1193 buf = (void *)urb->transfer_buffer + urb->actual_length;
1194 urb_len = urb->transfer_buffer_length - urb->actual_length;
1195 }
1196 bufsize = min(urb_len, (int) td->maxpacket);
1197 if (rcv_len <= bufsize) {
1198 size = rcv_len;
1199 } else {
1200 size = bufsize;
1201 status = -EOVERFLOW;
1202 finish = 1;
1203 }
1204
1205 /* update parameters */
1206 urb->actual_length += size;
1207 if (rcv_len == 0)
1208 td->zero_packet = 1;
1209 if (rcv_len < bufsize) {
1210 td->short_packet = 1;
1211 }
1212 if (usb_pipeisoc(urb->pipe)) {
1213 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1214 urb->iso_frame_desc[td->iso_cnt].status = status;
1215 td->iso_cnt++;
1216 finish = 0;
1217 }
1218
1219 /* check transfer finish */
1220 if (finish || check_transfer_finish(td, urb)) {
1221 pipe_stop(r8a66597, td->pipe);
1222 pipe_irq_disable(r8a66597, pipenum);
1223 finish = 1;
1224 }
1225
1226 /* read fifo */
1227 if (urb->transfer_buffer) {
1228 if (size == 0)
1229 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1230 else
1231 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1232 buf, size);
1233 }
1234
1235 if (finish && pipenum != 0)
1236 finish_request(r8a66597, td, pipenum, urb, status);
1237 }
1238
1239 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1240 {
1241 u16 tmp;
1242 int bufsize, size;
1243 u16 *buf;
1244 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1245 struct urb *urb;
1246
1247 if (unlikely(!td))
1248 return;
1249 urb = td->urb;
1250
1251 fifo_change_from_pipe(r8a66597, td->pipe);
1252 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1253 if (unlikely((tmp & FRDY) == 0)) {
1254 pipe_stop(r8a66597, td->pipe);
1255 pipe_irq_disable(r8a66597, pipenum);
1256 err("out write fifo not ready. (%d)", pipenum);
1257 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1258 return;
1259 }
1260
1261 /* prepare parameters */
1262 bufsize = td->maxpacket;
1263 if (usb_pipeisoc(urb->pipe)) {
1264 buf = (u16 *)(urb->transfer_buffer +
1265 urb->iso_frame_desc[td->iso_cnt].offset);
1266 size = min(bufsize,
1267 (int)urb->iso_frame_desc[td->iso_cnt].length);
1268 } else {
1269 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1270 size = min((int)bufsize,
1271 urb->transfer_buffer_length - urb->actual_length);
1272 }
1273
1274 /* write fifo */
1275 if (pipenum > 0)
1276 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1277 if (urb->transfer_buffer) {
1278 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1279 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1280 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1281 }
1282
1283 /* update parameters */
1284 urb->actual_length += size;
1285 if (usb_pipeisoc(urb->pipe)) {
1286 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1287 urb->iso_frame_desc[td->iso_cnt].status = 0;
1288 td->iso_cnt++;
1289 }
1290
1291 /* check transfer finish */
1292 if (check_transfer_finish(td, urb)) {
1293 disable_irq_ready(r8a66597, pipenum);
1294 enable_irq_empty(r8a66597, pipenum);
1295 if (!usb_pipeisoc(urb->pipe))
1296 enable_irq_nrdy(r8a66597, pipenum);
1297 } else
1298 pipe_irq_enable(r8a66597, urb, pipenum);
1299 }
1300
1301
1302 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1303 {
1304 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1305 struct urb *urb;
1306 u8 finish = 0;
1307
1308 if (unlikely(!td))
1309 return;
1310 urb = td->urb;
1311
1312 switch (td->type) {
1313 case USB_PID_IN:
1314 case USB_PID_OUT:
1315 if (check_transfer_finish(td, urb))
1316 td->type = USB_PID_ACK;
1317 break;
1318 case USB_PID_SETUP:
1319 if (urb->transfer_buffer_length == urb->actual_length)
1320 td->type = USB_PID_ACK;
1321 else if (usb_pipeout(urb->pipe))
1322 td->type = USB_PID_OUT;
1323 else
1324 td->type = USB_PID_IN;
1325 break;
1326 case USB_PID_ACK:
1327 finish = 1;
1328 break;
1329 }
1330
1331 if (finish || status != 0 || urb->unlinked)
1332 finish_request(r8a66597, td, 0, urb, status);
1333 else
1334 start_transfer(r8a66597, td);
1335 }
1336
1337 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1338 {
1339 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1340
1341 if (td) {
1342 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1343
1344 if (pid == PID_NAK)
1345 return -ECONNRESET;
1346 else
1347 return -EPIPE;
1348 }
1349 return 0;
1350 }
1351
1352 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1353 {
1354 u16 check;
1355 u16 pipenum;
1356 u16 mask;
1357 struct r8a66597_td *td;
1358
1359 mask = r8a66597_read(r8a66597, BRDYSTS)
1360 & r8a66597_read(r8a66597, BRDYENB);
1361 r8a66597_write(r8a66597, ~mask, BRDYSTS);
1362 if (mask & BRDY0) {
1363 td = r8a66597_get_td(r8a66597, 0);
1364 if (td && td->type == USB_PID_IN)
1365 packet_read(r8a66597, 0);
1366 else
1367 pipe_irq_disable(r8a66597, 0);
1368 check_next_phase(r8a66597, 0);
1369 }
1370
1371 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1372 check = 1 << pipenum;
1373 if (mask & check) {
1374 td = r8a66597_get_td(r8a66597, pipenum);
1375 if (unlikely(!td))
1376 continue;
1377
1378 if (td->type == USB_PID_IN)
1379 packet_read(r8a66597, pipenum);
1380 else if (td->type == USB_PID_OUT)
1381 packet_write(r8a66597, pipenum);
1382 }
1383 }
1384 }
1385
1386 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1387 {
1388 u16 tmp;
1389 u16 check;
1390 u16 pipenum;
1391 u16 mask;
1392 struct r8a66597_td *td;
1393
1394 mask = r8a66597_read(r8a66597, BEMPSTS)
1395 & r8a66597_read(r8a66597, BEMPENB);
1396 r8a66597_write(r8a66597, ~mask, BEMPSTS);
1397 if (mask & BEMP0) {
1398 cfifo_change(r8a66597, 0);
1399 td = r8a66597_get_td(r8a66597, 0);
1400 if (td && td->type != USB_PID_OUT)
1401 disable_irq_empty(r8a66597, 0);
1402 check_next_phase(r8a66597, 0);
1403 }
1404
1405 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1406 check = 1 << pipenum;
1407 if (mask & check) {
1408 struct r8a66597_td *td;
1409 td = r8a66597_get_td(r8a66597, pipenum);
1410 if (unlikely(!td))
1411 continue;
1412
1413 tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1414 if ((tmp & INBUFM) == 0) {
1415 disable_irq_empty(r8a66597, pipenum);
1416 pipe_irq_disable(r8a66597, pipenum);
1417 finish_request(r8a66597, td, pipenum, td->urb,
1418 0);
1419 }
1420 }
1421 }
1422 }
1423
1424 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1425 {
1426 u16 check;
1427 u16 pipenum;
1428 u16 mask;
1429 int status;
1430
1431 mask = r8a66597_read(r8a66597, NRDYSTS)
1432 & r8a66597_read(r8a66597, NRDYENB);
1433 r8a66597_write(r8a66597, ~mask, NRDYSTS);
1434 if (mask & NRDY0) {
1435 cfifo_change(r8a66597, 0);
1436 status = get_urb_error(r8a66597, 0);
1437 pipe_irq_disable(r8a66597, 0);
1438 check_next_phase(r8a66597, status);
1439 }
1440
1441 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1442 check = 1 << pipenum;
1443 if (mask & check) {
1444 struct r8a66597_td *td;
1445 td = r8a66597_get_td(r8a66597, pipenum);
1446 if (unlikely(!td))
1447 continue;
1448
1449 status = get_urb_error(r8a66597, pipenum);
1450 pipe_irq_disable(r8a66597, pipenum);
1451 pipe_stop(r8a66597, td->pipe);
1452 finish_request(r8a66597, td, pipenum, td->urb, status);
1453 }
1454 }
1455 }
1456
1457 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1458 {
1459 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1460
1461 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1462 rh->scount = R8A66597_MAX_SAMPLING;
1463 mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
1464 }
1465
1466 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1467 {
1468 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1469 u16 intsts0, intsts1, intsts2;
1470 u16 intenb0, intenb1, intenb2;
1471 u16 mask0, mask1, mask2;
1472 int status;
1473
1474 spin_lock(&r8a66597->lock);
1475
1476 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1477 intsts1 = r8a66597_read(r8a66597, INTSTS1);
1478 intsts2 = r8a66597_read(r8a66597, INTSTS2);
1479 intenb0 = r8a66597_read(r8a66597, INTENB0);
1480 intenb1 = r8a66597_read(r8a66597, INTENB1);
1481 intenb2 = r8a66597_read(r8a66597, INTENB2);
1482
1483 mask2 = intsts2 & intenb2;
1484 mask1 = intsts1 & intenb1;
1485 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1486 if (mask2) {
1487 if (mask2 & ATTCH) {
1488 r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1489 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1490
1491 /* start usb bus sampling */
1492 start_root_hub_sampling(r8a66597, 1);
1493 }
1494 if (mask2 & DTCH) {
1495 r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1496 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1497 r8a66597_usb_disconnect(r8a66597, 1);
1498 }
1499 }
1500
1501 if (mask1) {
1502 if (mask1 & ATTCH) {
1503 r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1504 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1505
1506 /* start usb bus sampling */
1507 start_root_hub_sampling(r8a66597, 0);
1508 }
1509 if (mask1 & DTCH) {
1510 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1511 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1512 r8a66597_usb_disconnect(r8a66597, 0);
1513 }
1514 if (mask1 & SIGN) {
1515 r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1516 status = get_urb_error(r8a66597, 0);
1517 check_next_phase(r8a66597, status);
1518 }
1519 if (mask1 & SACK) {
1520 r8a66597_write(r8a66597, ~SACK, INTSTS1);
1521 check_next_phase(r8a66597, 0);
1522 }
1523 }
1524 if (mask0) {
1525 if (mask0 & BRDY)
1526 irq_pipe_ready(r8a66597);
1527 if (mask0 & BEMP)
1528 irq_pipe_empty(r8a66597);
1529 if (mask0 & NRDY)
1530 irq_pipe_nrdy(r8a66597);
1531 }
1532
1533 spin_unlock(&r8a66597->lock);
1534 return IRQ_HANDLED;
1535 }
1536
1537 /* this function must be called with interrupt disabled */
1538 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1539 {
1540 u16 tmp;
1541 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1542
1543 if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1544 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1545
1546 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1547 if ((tmp & USBRST) == USBRST) {
1548 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1549 dvstctr_reg);
1550 mod_timer(&r8a66597->rh_timer,
1551 jiffies + msecs_to_jiffies(50));
1552 } else
1553 r8a66597_usb_connect(r8a66597, port);
1554 }
1555
1556 if (rh->scount > 0) {
1557 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1558 if (tmp == rh->old_syssts) {
1559 rh->scount--;
1560 if (rh->scount == 0) {
1561 if (tmp == FS_JSTS) {
1562 r8a66597_bset(r8a66597, HSE,
1563 get_syscfg_reg(port));
1564 r8a66597_usb_preconnect(r8a66597, port);
1565 } else if (tmp == LS_JSTS) {
1566 r8a66597_bclr(r8a66597, HSE,
1567 get_syscfg_reg(port));
1568 r8a66597_usb_preconnect(r8a66597, port);
1569 } else if (tmp == SE0)
1570 r8a66597_bset(r8a66597, ATTCHE,
1571 get_intenb_reg(port));
1572 } else {
1573 mod_timer(&r8a66597->rh_timer,
1574 jiffies + msecs_to_jiffies(50));
1575 }
1576 } else {
1577 rh->scount = R8A66597_MAX_SAMPLING;
1578 rh->old_syssts = tmp;
1579 mod_timer(&r8a66597->rh_timer,
1580 jiffies + msecs_to_jiffies(50));
1581 }
1582 }
1583 }
1584
1585 static void r8a66597_td_timer(unsigned long _r8a66597)
1586 {
1587 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1588 unsigned long flags;
1589 u16 pipenum;
1590 struct r8a66597_td *td, *new_td = NULL;
1591 struct r8a66597_pipe *pipe;
1592
1593 spin_lock_irqsave(&r8a66597->lock, flags);
1594 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1595 if (!(r8a66597->timeout_map & (1 << pipenum)))
1596 continue;
1597 if (timer_pending(&r8a66597->td_timer[pipenum]))
1598 continue;
1599
1600 td = r8a66597_get_td(r8a66597, pipenum);
1601 if (!td) {
1602 r8a66597->timeout_map &= ~(1 << pipenum);
1603 continue;
1604 }
1605
1606 if (td->urb->actual_length) {
1607 set_td_timer(r8a66597, td);
1608 break;
1609 }
1610
1611 pipe = td->pipe;
1612 pipe_stop(r8a66597, pipe);
1613
1614 new_td = td;
1615 do {
1616 list_move_tail(&new_td->queue,
1617 &r8a66597->pipe_queue[pipenum]);
1618 new_td = r8a66597_get_td(r8a66597, pipenum);
1619 if (!new_td) {
1620 new_td = td;
1621 break;
1622 }
1623 } while (td != new_td && td->address == new_td->address);
1624
1625 start_transfer(r8a66597, new_td);
1626
1627 if (td == new_td)
1628 r8a66597->timeout_map &= ~(1 << pipenum);
1629 else
1630 set_td_timer(r8a66597, new_td);
1631 break;
1632 }
1633 spin_unlock_irqrestore(&r8a66597->lock, flags);
1634 }
1635
1636 static void r8a66597_timer(unsigned long _r8a66597)
1637 {
1638 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1639 unsigned long flags;
1640
1641 spin_lock_irqsave(&r8a66597->lock, flags);
1642
1643 r8a66597_root_hub_control(r8a66597, 0);
1644 r8a66597_root_hub_control(r8a66597, 1);
1645
1646 spin_unlock_irqrestore(&r8a66597->lock, flags);
1647 }
1648
1649 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1650 {
1651 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1652
1653 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1654 (urb->dev->state == USB_STATE_CONFIGURED))
1655 return 1;
1656 else
1657 return 0;
1658 }
1659
1660 static int r8a66597_start(struct usb_hcd *hcd)
1661 {
1662 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1663
1664 hcd->state = HC_STATE_RUNNING;
1665 return enable_controller(r8a66597);
1666 }
1667
1668 static void r8a66597_stop(struct usb_hcd *hcd)
1669 {
1670 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1671
1672 disable_controller(r8a66597);
1673 }
1674
1675 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1676 {
1677 unsigned int usb_address = usb_pipedevice(urb->pipe);
1678 u16 root_port, hub_port;
1679
1680 if (usb_address == 0) {
1681 get_port_number(urb->dev->devpath,
1682 &root_port, &hub_port);
1683 set_devadd_reg(r8a66597, 0,
1684 get_r8a66597_usb_speed(urb->dev->speed),
1685 get_parent_r8a66597_address(r8a66597, urb->dev),
1686 hub_port, root_port);
1687 }
1688 }
1689
1690 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1691 struct urb *urb,
1692 struct usb_host_endpoint *hep)
1693 {
1694 struct r8a66597_td *td;
1695 u16 pipenum;
1696
1697 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1698 if (td == NULL)
1699 return NULL;
1700
1701 pipenum = r8a66597_get_pipenum(urb, hep);
1702 td->pipenum = pipenum;
1703 td->pipe = hep->hcpriv;
1704 td->urb = urb;
1705 td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1706 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1707 !usb_pipein(urb->pipe));
1708 if (usb_pipecontrol(urb->pipe))
1709 td->type = USB_PID_SETUP;
1710 else if (usb_pipein(urb->pipe))
1711 td->type = USB_PID_IN;
1712 else
1713 td->type = USB_PID_OUT;
1714 INIT_LIST_HEAD(&td->queue);
1715
1716 return td;
1717 }
1718
1719 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1720 struct urb *urb,
1721 gfp_t mem_flags)
1722 {
1723 struct usb_host_endpoint *hep = urb->ep;
1724 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1725 struct r8a66597_td *td = NULL;
1726 int ret, request = 0;
1727 unsigned long flags;
1728
1729 spin_lock_irqsave(&r8a66597->lock, flags);
1730 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1731 ret = -ENODEV;
1732 goto error_not_linked;
1733 }
1734
1735 ret = usb_hcd_link_urb_to_ep(hcd, urb);
1736 if (ret)
1737 goto error_not_linked;
1738
1739 if (!hep->hcpriv) {
1740 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1741 GFP_ATOMIC);
1742 if (!hep->hcpriv) {
1743 ret = -ENOMEM;
1744 goto error;
1745 }
1746 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1747 if (usb_pipeendpoint(urb->pipe))
1748 init_pipe_info(r8a66597, urb, hep, &hep->desc);
1749 }
1750
1751 if (unlikely(check_pipe_config(r8a66597, urb)))
1752 init_pipe_config(r8a66597, urb);
1753
1754 set_address_zero(r8a66597, urb);
1755 td = r8a66597_make_td(r8a66597, urb, hep);
1756 if (td == NULL) {
1757 ret = -ENOMEM;
1758 goto error;
1759 }
1760 if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1761 request = 1;
1762 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1763 urb->hcpriv = td;
1764
1765 if (request) {
1766 ret = start_transfer(r8a66597, td);
1767 if (ret < 0) {
1768 list_del(&td->queue);
1769 kfree(td);
1770 }
1771 } else
1772 set_td_timer(r8a66597, td);
1773
1774 error:
1775 if (ret)
1776 usb_hcd_unlink_urb_from_ep(hcd, urb);
1777 error_not_linked:
1778 spin_unlock_irqrestore(&r8a66597->lock, flags);
1779 return ret;
1780 }
1781
1782 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1783 int status)
1784 {
1785 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1786 struct r8a66597_td *td;
1787 unsigned long flags;
1788 int rc;
1789
1790 spin_lock_irqsave(&r8a66597->lock, flags);
1791 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1792 if (rc)
1793 goto done;
1794
1795 if (urb->hcpriv) {
1796 td = urb->hcpriv;
1797 pipe_stop(r8a66597, td->pipe);
1798 pipe_irq_disable(r8a66597, td->pipenum);
1799 disable_irq_empty(r8a66597, td->pipenum);
1800 finish_request(r8a66597, td, td->pipenum, urb, status);
1801 }
1802 done:
1803 spin_unlock_irqrestore(&r8a66597->lock, flags);
1804 return rc;
1805 }
1806
1807 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1808 struct usb_host_endpoint *hep)
1809 {
1810 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1811 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1812 struct r8a66597_td *td;
1813 struct urb *urb = NULL;
1814 u16 pipenum;
1815 unsigned long flags;
1816
1817 if (pipe == NULL)
1818 return;
1819 pipenum = pipe->info.pipenum;
1820
1821 if (pipenum == 0) {
1822 kfree(hep->hcpriv);
1823 hep->hcpriv = NULL;
1824 return;
1825 }
1826
1827 spin_lock_irqsave(&r8a66597->lock, flags);
1828 pipe_stop(r8a66597, pipe);
1829 pipe_irq_disable(r8a66597, pipenum);
1830 disable_irq_empty(r8a66597, pipenum);
1831 td = r8a66597_get_td(r8a66597, pipenum);
1832 if (td)
1833 urb = td->urb;
1834 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1835 kfree(hep->hcpriv);
1836 hep->hcpriv = NULL;
1837 spin_unlock_irqrestore(&r8a66597->lock, flags);
1838 }
1839
1840 static int r8a66597_get_frame(struct usb_hcd *hcd)
1841 {
1842 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1843 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1844 }
1845
1846 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1847 {
1848 int chix;
1849
1850 if (udev->state == USB_STATE_CONFIGURED &&
1851 udev->parent && udev->parent->devnum > 1 &&
1852 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1853 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1854
1855 for (chix = 0; chix < udev->maxchild; chix++) {
1856 struct usb_device *childdev = udev->children[chix];
1857
1858 if (childdev)
1859 collect_usb_address_map(childdev, map);
1860 }
1861 }
1862
1863 /* this function must be called with interrupt disabled */
1864 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1865 int addr)
1866 {
1867 struct r8a66597_device *dev;
1868 struct list_head *list = &r8a66597->child_device;
1869
1870 list_for_each_entry(dev, list, device_list) {
1871 if (!dev)
1872 continue;
1873 if (dev->usb_address != addr)
1874 continue;
1875
1876 return dev;
1877 }
1878
1879 err("get_r8a66597_device fail.(%d)\n", addr);
1880 return NULL;
1881 }
1882
1883 static void update_usb_address_map(struct r8a66597 *r8a66597,
1884 struct usb_device *root_hub,
1885 unsigned long *map)
1886 {
1887 int i, j, addr;
1888 unsigned long diff;
1889 unsigned long flags;
1890
1891 for (i = 0; i < 4; i++) {
1892 diff = r8a66597->child_connect_map[i] ^ map[i];
1893 if (!diff)
1894 continue;
1895
1896 for (j = 0; j < 32; j++) {
1897 if (!(diff & (1 << j)))
1898 continue;
1899
1900 addr = i * 32 + j;
1901 if (map[i] & (1 << j))
1902 set_child_connect_map(r8a66597, addr);
1903 else {
1904 struct r8a66597_device *dev;
1905
1906 spin_lock_irqsave(&r8a66597->lock, flags);
1907 dev = get_r8a66597_device(r8a66597, addr);
1908 disable_r8a66597_pipe_all(r8a66597, dev);
1909 free_usb_address(r8a66597, dev);
1910 put_child_connect_map(r8a66597, addr);
1911 spin_unlock_irqrestore(&r8a66597->lock, flags);
1912 }
1913 }
1914 }
1915 }
1916
1917 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
1918 struct usb_hcd *hcd)
1919 {
1920 struct usb_bus *bus;
1921 unsigned long now_map[4];
1922
1923 memset(now_map, 0, sizeof(now_map));
1924
1925 list_for_each_entry(bus, &usb_bus_list, bus_list) {
1926 if (!bus->root_hub)
1927 continue;
1928
1929 if (bus->busnum != hcd->self.busnum)
1930 continue;
1931
1932 collect_usb_address_map(bus->root_hub, now_map);
1933 update_usb_address_map(r8a66597, bus->root_hub, now_map);
1934 }
1935 }
1936
1937 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
1938 {
1939 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1940 unsigned long flags;
1941 int i;
1942
1943 r8a66597_check_detect_child(r8a66597, hcd);
1944
1945 spin_lock_irqsave(&r8a66597->lock, flags);
1946
1947 *buf = 0; /* initialize (no change) */
1948
1949 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
1950 if (r8a66597->root_hub[i].port & 0xffff0000)
1951 *buf |= 1 << (i + 1);
1952 }
1953
1954 spin_unlock_irqrestore(&r8a66597->lock, flags);
1955
1956 return (*buf != 0);
1957 }
1958
1959 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
1960 struct usb_hub_descriptor *desc)
1961 {
1962 desc->bDescriptorType = 0x29;
1963 desc->bHubContrCurrent = 0;
1964 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
1965 desc->bDescLength = 9;
1966 desc->bPwrOn2PwrGood = 0;
1967 desc->wHubCharacteristics = cpu_to_le16(0x0011);
1968 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
1969 desc->bitmap[1] = ~0;
1970 }
1971
1972 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1973 u16 wIndex, char *buf, u16 wLength)
1974 {
1975 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1976 int ret;
1977 int port = (wIndex & 0x00FF) - 1;
1978 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1979 unsigned long flags;
1980
1981 ret = 0;
1982
1983 spin_lock_irqsave(&r8a66597->lock, flags);
1984 switch (typeReq) {
1985 case ClearHubFeature:
1986 case SetHubFeature:
1987 switch (wValue) {
1988 case C_HUB_OVER_CURRENT:
1989 case C_HUB_LOCAL_POWER:
1990 break;
1991 default:
1992 goto error;
1993 }
1994 break;
1995 case ClearPortFeature:
1996 if (wIndex > R8A66597_MAX_ROOT_HUB)
1997 goto error;
1998 if (wLength != 0)
1999 goto error;
2000
2001 switch (wValue) {
2002 case USB_PORT_FEAT_ENABLE:
2003 rh->port &= (1 << USB_PORT_FEAT_POWER);
2004 break;
2005 case USB_PORT_FEAT_SUSPEND:
2006 break;
2007 case USB_PORT_FEAT_POWER:
2008 r8a66597_port_power(r8a66597, port, 0);
2009 break;
2010 case USB_PORT_FEAT_C_ENABLE:
2011 case USB_PORT_FEAT_C_SUSPEND:
2012 case USB_PORT_FEAT_C_CONNECTION:
2013 case USB_PORT_FEAT_C_OVER_CURRENT:
2014 case USB_PORT_FEAT_C_RESET:
2015 break;
2016 default:
2017 goto error;
2018 }
2019 rh->port &= ~(1 << wValue);
2020 break;
2021 case GetHubDescriptor:
2022 r8a66597_hub_descriptor(r8a66597,
2023 (struct usb_hub_descriptor *)buf);
2024 break;
2025 case GetHubStatus:
2026 *buf = 0x00;
2027 break;
2028 case GetPortStatus:
2029 if (wIndex > R8A66597_MAX_ROOT_HUB)
2030 goto error;
2031 *(u32 *)buf = cpu_to_le32(rh->port);
2032 break;
2033 case SetPortFeature:
2034 if (wIndex > R8A66597_MAX_ROOT_HUB)
2035 goto error;
2036 if (wLength != 0)
2037 goto error;
2038
2039 switch (wValue) {
2040 case USB_PORT_FEAT_SUSPEND:
2041 break;
2042 case USB_PORT_FEAT_POWER:
2043 r8a66597_port_power(r8a66597, port, 1);
2044 rh->port |= (1 << USB_PORT_FEAT_POWER);
2045 break;
2046 case USB_PORT_FEAT_RESET: {
2047 struct r8a66597_device *dev = rh->dev;
2048
2049 rh->port |= (1 << USB_PORT_FEAT_RESET);
2050
2051 disable_r8a66597_pipe_all(r8a66597, dev);
2052 free_usb_address(r8a66597, dev);
2053
2054 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2055 get_dvstctr_reg(port));
2056 mod_timer(&r8a66597->rh_timer,
2057 jiffies + msecs_to_jiffies(50));
2058 }
2059 break;
2060 default:
2061 goto error;
2062 }
2063 rh->port |= 1 << wValue;
2064 break;
2065 default:
2066 error:
2067 ret = -EPIPE;
2068 break;
2069 }
2070
2071 spin_unlock_irqrestore(&r8a66597->lock, flags);
2072 return ret;
2073 }
2074
2075 static struct hc_driver r8a66597_hc_driver = {
2076 .description = hcd_name,
2077 .hcd_priv_size = sizeof(struct r8a66597),
2078 .irq = r8a66597_irq,
2079
2080 /*
2081 * generic hardware linkage
2082 */
2083 .flags = HCD_USB2,
2084
2085 .start = r8a66597_start,
2086 .stop = r8a66597_stop,
2087
2088 /*
2089 * managing i/o requests and associated device resources
2090 */
2091 .urb_enqueue = r8a66597_urb_enqueue,
2092 .urb_dequeue = r8a66597_urb_dequeue,
2093 .endpoint_disable = r8a66597_endpoint_disable,
2094
2095 /*
2096 * periodic schedule support
2097 */
2098 .get_frame_number = r8a66597_get_frame,
2099
2100 /*
2101 * root hub support
2102 */
2103 .hub_status_data = r8a66597_hub_status_data,
2104 .hub_control = r8a66597_hub_control,
2105 };
2106
2107 #if defined(CONFIG_PM)
2108 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2109 {
2110 pdev->dev.power.power_state = state;
2111 return 0;
2112 }
2113
2114 static int r8a66597_resume(struct platform_device *pdev)
2115 {
2116 pdev->dev.power.power_state = PMSG_ON;
2117 return 0;
2118 }
2119 #else /* if defined(CONFIG_PM) */
2120 #define r8a66597_suspend NULL
2121 #define r8a66597_resume NULL
2122 #endif
2123
2124 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2125 {
2126 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
2127 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2128
2129 del_timer_sync(&r8a66597->rh_timer);
2130 usb_remove_hcd(hcd);
2131 iounmap((void *)r8a66597->reg);
2132 usb_put_hcd(hcd);
2133 return 0;
2134 }
2135
2136 #define resource_len(r) (((r)->end - (r)->start) + 1)
2137 static int __init r8a66597_probe(struct platform_device *pdev)
2138 {
2139 struct resource *res = NULL;
2140 int irq = -1;
2141 void __iomem *reg = NULL;
2142 struct usb_hcd *hcd = NULL;
2143 struct r8a66597 *r8a66597;
2144 int ret = 0;
2145 int i;
2146
2147 if (pdev->dev.dma_mask) {
2148 ret = -EINVAL;
2149 err("dma not support");
2150 goto clean_up;
2151 }
2152
2153 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2154 (char *)hcd_name);
2155 if (!res) {
2156 ret = -ENODEV;
2157 err("platform_get_resource_byname error.");
2158 goto clean_up;
2159 }
2160
2161 irq = platform_get_irq(pdev, 0);
2162 if (irq < 0) {
2163 ret = -ENODEV;
2164 err("platform_get_irq error.");
2165 goto clean_up;
2166 }
2167
2168 reg = ioremap(res->start, resource_len(res));
2169 if (reg == NULL) {
2170 ret = -ENOMEM;
2171 err("ioremap error.");
2172 goto clean_up;
2173 }
2174
2175 /* initialize hcd */
2176 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2177 if (!hcd) {
2178 ret = -ENOMEM;
2179 err("Failed to create hcd");
2180 goto clean_up;
2181 }
2182 r8a66597 = hcd_to_r8a66597(hcd);
2183 memset(r8a66597, 0, sizeof(struct r8a66597));
2184 dev_set_drvdata(&pdev->dev, r8a66597);
2185
2186 spin_lock_init(&r8a66597->lock);
2187 init_timer(&r8a66597->rh_timer);
2188 r8a66597->rh_timer.function = r8a66597_timer;
2189 r8a66597->rh_timer.data = (unsigned long)r8a66597;
2190 r8a66597->reg = (unsigned long)reg;
2191
2192 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2193 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2194 init_timer(&r8a66597->td_timer[i]);
2195 r8a66597->td_timer[i].function = r8a66597_td_timer;
2196 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2197 }
2198 INIT_LIST_HEAD(&r8a66597->child_device);
2199
2200 hcd->rsrc_start = res->start;
2201 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
2202 if (ret != 0) {
2203 err("Failed to add hcd");
2204 goto clean_up;
2205 }
2206
2207 return 0;
2208
2209 clean_up:
2210 if (reg)
2211 iounmap(reg);
2212
2213 return ret;
2214 }
2215
2216 static struct platform_driver r8a66597_driver = {
2217 .probe = r8a66597_probe,
2218 .remove = r8a66597_remove,
2219 .suspend = r8a66597_suspend,
2220 .resume = r8a66597_resume,
2221 .driver = {
2222 .name = (char *) hcd_name,
2223 .owner = THIS_MODULE,
2224 },
2225 };
2226
2227 static int __init r8a66597_init(void)
2228 {
2229 if (usb_disabled())
2230 return -ENODEV;
2231
2232 info("driver %s, %s", hcd_name, DRIVER_VERSION);
2233 return platform_driver_register(&r8a66597_driver);
2234 }
2235 module_init(r8a66597_init);
2236
2237 static void __exit r8a66597_cleanup(void)
2238 {
2239 platform_driver_unregister(&r8a66597_driver);
2240 }
2241 module_exit(r8a66597_cleanup);
2242
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree