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x86: disable BTS ptrace extensions for now
[wrt350n-kernel.git] / drivers / usb / host / r8a66597-hcd.c
blob0ce2fc5e396b130dba59bca0bd2310658814624a
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
48 #define DRIVER_VERSION "29 May 2007"
49
50 static const char hcd_name[] = "r8a66597_hcd";
51
52 /* module parameters */
53 static unsigned short clock = XTAL12;
54 module_param(clock, ushort, 0644);
55 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
56 "(default=0)");
57
58 static unsigned short vif = LDRV;
59 module_param(vif, ushort, 0644);
60 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
61
62 static unsigned short endian;
63 module_param(endian, ushort, 0644);
64 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
65
66 static unsigned short irq_sense = INTL;
67 module_param(irq_sense, ushort, 0644);
68 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
69 "(default=32)");
70
71 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
72 static int r8a66597_get_frame(struct usb_hcd *hcd);
73
74 /* this function must be called with interrupt disabled */
75 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
76 unsigned long reg)
77 {
78 u16 tmp;
79
80 tmp = r8a66597_read(r8a66597, INTENB0);
81 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
82 r8a66597_bset(r8a66597, 1 << pipenum, reg);
83 r8a66597_write(r8a66597, tmp, INTENB0);
84 }
85
86 /* this function must be called with interrupt disabled */
87 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
88 unsigned long reg)
89 {
90 u16 tmp;
91
92 tmp = r8a66597_read(r8a66597, INTENB0);
93 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
94 r8a66597_bclr(r8a66597, 1 << pipenum, reg);
95 r8a66597_write(r8a66597, tmp, INTENB0);
96 }
97
98 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
99 u16 usbspd, u8 upphub, u8 hubport, int port)
100 {
101 u16 val;
102 unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
103
104 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
105 r8a66597_write(r8a66597, val, devadd_reg);
106 }
107
108 static int enable_controller(struct r8a66597 *r8a66597)
109 {
110 u16 tmp;
111 int i = 0;
112
113 do {
114 r8a66597_write(r8a66597, USBE, SYSCFG0);
115 tmp = r8a66597_read(r8a66597, SYSCFG0);
116 if (i++ > 1000) {
117 err("register access fail.");
118 return -ENXIO;
119 }
120 } while ((tmp & USBE) != USBE);
121 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
122 r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
123
124 i = 0;
125 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
126 do {
127 msleep(1);
128 tmp = r8a66597_read(r8a66597, SYSCFG0);
129 if (i++ > 500) {
130 err("register access fail.");
131 return -ENXIO;
132 }
133 } while ((tmp & SCKE) != SCKE);
134
135 r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
136 r8a66597_bset(r8a66597, DRPD, SYSCFG1);
137
138 r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
139 r8a66597_bset(r8a66597, HSE, SYSCFG0);
140 r8a66597_bset(r8a66597, HSE, SYSCFG1);
141 r8a66597_bset(r8a66597, USBE, SYSCFG0);
142
143 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
144 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
145 r8a66597_bset(r8a66597, BRDY0, BRDYENB);
146 r8a66597_bset(r8a66597, BEMP0, BEMPENB);
147
148 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
149 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
150
151 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
152 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
153 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
154
155 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
156
157 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
158 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
159 r8a66597_bset(r8a66597, ATTCHE, INTENB1);
160 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
161 r8a66597_bset(r8a66597, ATTCHE, INTENB2);
162
163 return 0;
164 }
165
166 static void disable_controller(struct r8a66597 *r8a66597)
167 {
168 u16 tmp;
169
170 r8a66597_write(r8a66597, 0, INTENB0);
171 r8a66597_write(r8a66597, 0, INTENB1);
172 r8a66597_write(r8a66597, 0, INTENB2);
173 r8a66597_write(r8a66597, 0, INTSTS0);
174 r8a66597_write(r8a66597, 0, INTSTS1);
175 r8a66597_write(r8a66597, 0, INTSTS2);
176
177 r8a66597_port_power(r8a66597, 0, 0);
178 r8a66597_port_power(r8a66597, 1, 0);
179
180 do {
181 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
182 udelay(640);
183 } while (tmp == EDGESTS);
184
185 r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
186 r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
187 r8a66597_bclr(r8a66597, HSE, SYSCFG0);
188 r8a66597_bclr(r8a66597, HSE, SYSCFG1);
189
190 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
191 udelay(1);
192 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
193 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
194 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
195 }
196
197 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
198 struct usb_device *udev)
199 {
200 struct r8a66597_device *dev;
201
202 if (udev->parent && udev->parent->devnum != 1)
203 udev = udev->parent;
204
205 dev = dev_get_drvdata(&udev->dev);
206 if (dev)
207 return dev->address;
208 else
209 return 0;
210 }
211
212 static int is_child_device(char *devpath)
213 {
214 return (devpath[2] ? 1 : 0);
215 }
216
217 static int is_hub_limit(char *devpath)
218 {
219 return ((strlen(devpath) >= 4) ? 1 : 0);
220 }
221
222 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
223 {
224 if (root_port) {
225 *root_port = (devpath[0] & 0x0F) - 1;
226 if (*root_port >= R8A66597_MAX_ROOT_HUB)
227 err("illegal root port number");
228 }
229 if (hub_port)
230 *hub_port = devpath[2] & 0x0F;
231 }
232
233 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
234 {
235 u16 usbspd = 0;
236
237 switch (speed) {
238 case USB_SPEED_LOW:
239 usbspd = LSMODE;
240 break;
241 case USB_SPEED_FULL:
242 usbspd = FSMODE;
243 break;
244 case USB_SPEED_HIGH:
245 usbspd = HSMODE;
246 break;
247 default:
248 err("unknown speed");
249 break;
250 }
251
252 return usbspd;
253 }
254
255 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
256 {
257 int idx;
258
259 idx = address / 32;
260 r8a66597->child_connect_map[idx] |= 1 << (address % 32);
261 }
262
263 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
264 {
265 int idx;
266
267 idx = address / 32;
268 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
269 }
270
271 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
272 {
273 u16 pipenum = pipe->info.pipenum;
274 unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
275 unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
276 unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
277
278 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
279 dma_ch = R8A66597_PIPE_NO_DMA;
280
281 pipe->fifoaddr = fifoaddr[dma_ch];
282 pipe->fifosel = fifosel[dma_ch];
283 pipe->fifoctr = fifoctr[dma_ch];
284
285 if (pipenum == 0)
286 pipe->pipectr = DCPCTR;
287 else
288 pipe->pipectr = get_pipectr_addr(pipenum);
289
290 if (check_bulk_or_isoc(pipenum)) {
291 pipe->pipetre = get_pipetre_addr(pipenum);
292 pipe->pipetrn = get_pipetrn_addr(pipenum);
293 } else {
294 pipe->pipetre = 0;
295 pipe->pipetrn = 0;
296 }
297 }
298
299 static struct r8a66597_device *
300 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
301 {
302 if (usb_pipedevice(urb->pipe) == 0)
303 return &r8a66597->device0;
304
305 return dev_get_drvdata(&urb->dev->dev);
306 }
307
308 static int make_r8a66597_device(struct r8a66597 *r8a66597,
309 struct urb *urb, u8 addr)
310 {
311 struct r8a66597_device *dev;
312 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
313
314 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
315 if (dev == NULL)
316 return -ENOMEM;
317
318 dev_set_drvdata(&urb->dev->dev, dev);
319 dev->udev = urb->dev;
320 dev->address = addr;
321 dev->usb_address = usb_address;
322 dev->state = USB_STATE_ADDRESS;
323 dev->ep_in_toggle = 0;
324 dev->ep_out_toggle = 0;
325 INIT_LIST_HEAD(&dev->device_list);
326 list_add_tail(&dev->device_list, &r8a66597->child_device);
327
328 get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
329 if (!is_child_device(urb->dev->devpath))
330 r8a66597->root_hub[dev->root_port].dev = dev;
331
332 set_devadd_reg(r8a66597, dev->address,
333 get_r8a66597_usb_speed(urb->dev->speed),
334 get_parent_r8a66597_address(r8a66597, urb->dev),
335 dev->hub_port, dev->root_port);
336
337 return 0;
338 }
339
340 /* this function must be called with interrupt disabled */
341 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
342 {
343 u8 addr; /* R8A66597's address */
344 struct r8a66597_device *dev;
345
346 if (is_hub_limit(urb->dev->devpath)) {
347 err("Externel hub limit reached.");
348 return 0;
349 }
350
351 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
352 if (dev && dev->state >= USB_STATE_ADDRESS)
353 return dev->address;
354
355 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
356 if (r8a66597->address_map & (1 << addr))
357 continue;
358
359 dbg("alloc_address: r8a66597_addr=%d", addr);
360 r8a66597->address_map |= 1 << addr;
361
362 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
363 return 0;
364
365 return addr;
366 }
367
368 err("cannot communicate with a USB device more than 10.(%x)",
369 r8a66597->address_map);
370
371 return 0;
372 }
373
374 /* this function must be called with interrupt disabled */
375 static void free_usb_address(struct r8a66597 *r8a66597,
376 struct r8a66597_device *dev)
377 {
378 int port;
379
380 if (!dev)
381 return;
382
383 dbg("free_addr: addr=%d", dev->address);
384
385 dev->state = USB_STATE_DEFAULT;
386 r8a66597->address_map &= ~(1 << dev->address);
387 dev->address = 0;
388 dev_set_drvdata(&dev->udev->dev, NULL);
389 list_del(&dev->device_list);
390 kfree(dev);
391
392 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
393 if (r8a66597->root_hub[port].dev == dev) {
394 r8a66597->root_hub[port].dev = NULL;
395 break;
396 }
397 }
398 }
399
400 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
401 u16 mask, u16 loop)
402 {
403 u16 tmp;
404 int i = 0;
405
406 do {
407 tmp = r8a66597_read(r8a66597, reg);
408 if (i++ > 1000000) {
409 err("register%lx, loop %x is timeout", reg, loop);
410 break;
411 }
412 ndelay(1);
413 } while ((tmp & mask) != loop);
414 }
415
416 /* this function must be called with interrupt disabled */
417 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
418 {
419 u16 tmp;
420
421 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
422 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
423 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
424 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
425 }
426
427 /* this function must be called with interrupt disabled */
428 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
429 {
430 u16 tmp;
431
432 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
433 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
434 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
435 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
436 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
437 }
438
439 /* this function must be called with interrupt disabled */
440 static void clear_all_buffer(struct r8a66597 *r8a66597,
441 struct r8a66597_pipe *pipe)
442 {
443 u16 tmp;
444
445 if (!pipe || pipe->info.pipenum == 0)
446 return;
447
448 pipe_stop(r8a66597, pipe);
449 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
450 tmp = r8a66597_read(r8a66597, pipe->pipectr);
451 tmp = r8a66597_read(r8a66597, pipe->pipectr);
452 tmp = r8a66597_read(r8a66597, pipe->pipectr);
453 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
454 }
455
456 /* this function must be called with interrupt disabled */
457 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
458 struct r8a66597_pipe *pipe, int toggle)
459 {
460 if (toggle)
461 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
462 else
463 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
464 }
465
466 /* this function must be called with interrupt disabled */
467 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
468 {
469 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
470 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
471 }
472
473 /* this function must be called with interrupt disabled */
474 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
475 struct r8a66597_pipe *pipe)
476 {
477 cfifo_change(r8a66597, 0);
478 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
479 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
480
481 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
482 pipe->fifosel);
483 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
484 }
485
486 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
487 {
488 struct r8a66597_pipe *pipe = hep->hcpriv;
489
490 if (usb_pipeendpoint(urb->pipe) == 0)
491 return 0;
492 else
493 return pipe->info.pipenum;
494 }
495
496 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
497 {
498 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
499
500 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
501 }
502
503 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
504 int urb_pipe)
505 {
506 if (!dev)
507 return NULL;
508
509 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
510 }
511
512 /* this function must be called with interrupt disabled */
513 static void pipe_toggle_set(struct r8a66597 *r8a66597,
514 struct r8a66597_pipe *pipe,
515 struct urb *urb, int set)
516 {
517 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
518 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
519 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
520
521 if (!toggle)
522 return;
523
524 if (set)
525 *toggle |= 1 << endpoint;
526 else
527 *toggle &= ~(1 << endpoint);
528 }
529
530 /* this function must be called with interrupt disabled */
531 static void pipe_toggle_save(struct r8a66597 *r8a66597,
532 struct r8a66597_pipe *pipe,
533 struct urb *urb)
534 {
535 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
536 pipe_toggle_set(r8a66597, pipe, urb, 1);
537 else
538 pipe_toggle_set(r8a66597, pipe, urb, 0);
539 }
540
541 /* this function must be called with interrupt disabled */
542 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
543 struct r8a66597_pipe *pipe,
544 struct urb *urb)
545 {
546 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
547 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
548 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
549
550 if (!toggle)
551 return;
552
553 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
554 }
555
556 /* this function must be called with interrupt disabled */
557 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
558 struct r8a66597_pipe_info *info)
559 {
560 u16 val = 0;
561
562 if (info->pipenum == 0)
563 return;
564
565 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
566 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
567 r8a66597_write(r8a66597, info->pipenum, PIPESEL);
568 if (!info->dir_in)
569 val |= R8A66597_DIR;
570 if (info->type == R8A66597_BULK && info->dir_in)
571 val |= R8A66597_DBLB | R8A66597_SHTNAK;
572 val |= info->type | info->epnum;
573 r8a66597_write(r8a66597, val, PIPECFG);
574
575 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
576 PIPEBUF);
577 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
578 PIPEMAXP);
579 if (info->interval)
580 info->interval--;
581 r8a66597_write(r8a66597, info->interval, PIPEPERI);
582 }
583
584
585
586 /* this function must be called with interrupt disabled */
587 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
588 {
589 struct r8a66597_pipe_info *info;
590 struct urb *urb = td->urb;
591
592 if (td->pipenum > 0) {
593 info = &td->pipe->info;
594 cfifo_change(r8a66597, 0);
595 pipe_buffer_setting(r8a66597, info);
596
597 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
598 usb_pipeout(urb->pipe)) &&
599 !usb_pipecontrol(urb->pipe)) {
600 r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
601 pipe_toggle_set(r8a66597, td->pipe, urb, 0);
602 clear_all_buffer(r8a66597, td->pipe);
603 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
604 usb_pipeout(urb->pipe), 1);
605 }
606 pipe_toggle_restore(r8a66597, td->pipe, urb);
607 }
608 }
609
610 /* this function must be called with interrupt disabled */
611 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
612 struct usb_endpoint_descriptor *ep)
613 {
614 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
615
616 memset(array, 0, sizeof(array));
617 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
618 case USB_ENDPOINT_XFER_BULK:
619 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
620 array[i++] = 4;
621 else {
622 array[i++] = 3;
623 array[i++] = 5;
624 }
625 break;
626 case USB_ENDPOINT_XFER_INT:
627 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
628 array[i++] = 6;
629 array[i++] = 7;
630 array[i++] = 8;
631 } else
632 array[i++] = 9;
633 break;
634 case USB_ENDPOINT_XFER_ISOC:
635 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
636 array[i++] = 2;
637 else
638 array[i++] = 1;
639 break;
640 default:
641 err("Illegal type");
642 return 0;
643 }
644
645 i = 1;
646 min = array[0];
647 while (array[i] != 0) {
648 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
649 min = array[i];
650 i++;
651 }
652
653 return min;
654 }
655
656 static u16 get_r8a66597_type(__u8 type)
657 {
658 u16 r8a66597_type;
659
660 switch (type) {
661 case USB_ENDPOINT_XFER_BULK:
662 r8a66597_type = R8A66597_BULK;
663 break;
664 case USB_ENDPOINT_XFER_INT:
665 r8a66597_type = R8A66597_INT;
666 break;
667 case USB_ENDPOINT_XFER_ISOC:
668 r8a66597_type = R8A66597_ISO;
669 break;
670 default:
671 err("Illegal type");
672 r8a66597_type = 0x0000;
673 break;
674 }
675
676 return r8a66597_type;
677 }
678
679 static u16 get_bufnum(u16 pipenum)
680 {
681 u16 bufnum = 0;
682
683 if (pipenum == 0)
684 bufnum = 0;
685 else if (check_bulk_or_isoc(pipenum))
686 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
687 else if (check_interrupt(pipenum))
688 bufnum = 4 + (pipenum - 6);
689 else
690 err("Illegal pipenum (%d)", pipenum);
691
692 return bufnum;
693 }
694
695 static u16 get_buf_bsize(u16 pipenum)
696 {
697 u16 buf_bsize = 0;
698
699 if (pipenum == 0)
700 buf_bsize = 3;
701 else if (check_bulk_or_isoc(pipenum))
702 buf_bsize = R8A66597_BUF_BSIZE - 1;
703 else if (check_interrupt(pipenum))
704 buf_bsize = 0;
705 else
706 err("Illegal pipenum (%d)", pipenum);
707
708 return buf_bsize;
709 }
710
711 /* this function must be called with interrupt disabled */
712 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
713 struct r8a66597_device *dev,
714 struct r8a66597_pipe *pipe,
715 struct urb *urb)
716 {
717 int i;
718 struct r8a66597_pipe_info *info = &pipe->info;
719
720 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
721 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
722 if ((r8a66597->dma_map & (1 << i)) != 0)
723 continue;
724
725 info("address %d, EndpointAddress 0x%02x use DMA FIFO",
726 usb_pipedevice(urb->pipe),
727 info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
728 : info->epnum);
729
730 r8a66597->dma_map |= 1 << i;
731 dev->dma_map |= 1 << i;
732 set_pipe_reg_addr(pipe, i);
733
734 cfifo_change(r8a66597, 0);
735 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
736 MBW | CURPIPE, pipe->fifosel);
737
738 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
739 pipe->info.pipenum);
740 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
741 break;
742 }
743 }
744 }
745
746 /* this function must be called with interrupt disabled */
747 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
748 struct usb_host_endpoint *hep,
749 struct r8a66597_pipe_info *info)
750 {
751 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
752 struct r8a66597_pipe *pipe = hep->hcpriv;
753
754 dbg("enable_pipe:");
755
756 pipe->info = *info;
757 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
758 r8a66597->pipe_cnt[pipe->info.pipenum]++;
759 dev->pipe_cnt[pipe->info.pipenum]++;
760
761 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
762 }
763
764 /* this function must be called with interrupt disabled */
765 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
766 {
767 struct r8a66597_td *td, *next;
768 struct urb *urb;
769 struct list_head *list = &r8a66597->pipe_queue[pipenum];
770
771 if (list_empty(list))
772 return;
773
774 list_for_each_entry_safe(td, next, list, queue) {
775 if (!td)
776 continue;
777 if (td->address != address)
778 continue;
779
780 urb = td->urb;
781 list_del(&td->queue);
782 kfree(td);
783
784 if (urb) {
785 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
786 urb);
787
788 spin_unlock(&r8a66597->lock);
789 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
790 -ENODEV);
791 spin_lock(&r8a66597->lock);
792 }
793 break;
794 }
795 }
796
797 /* this function must be called with interrupt disabled */
798 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
799 struct r8a66597_device *dev)
800 {
801 int check_ep0 = 0;
802 u16 pipenum;
803
804 if (!dev)
805 return;
806
807 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
808 if (!dev->pipe_cnt[pipenum])
809 continue;
810
811 if (!check_ep0) {
812 check_ep0 = 1;
813 force_dequeue(r8a66597, 0, dev->address);
814 }
815
816 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
817 dev->pipe_cnt[pipenum] = 0;
818 force_dequeue(r8a66597, pipenum, dev->address);
819 }
820
821 dbg("disable_pipe");
822
823 r8a66597->dma_map &= ~(dev->dma_map);
824 dev->dma_map = 0;
825 }
826
827 /* this function must be called with interrupt disabled */
828 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
829 struct usb_host_endpoint *hep,
830 struct usb_endpoint_descriptor *ep)
831 {
832 struct r8a66597_pipe_info info;
833
834 info.pipenum = get_empty_pipenum(r8a66597, ep);
835 info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
836 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
837 info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
838 info.type = get_r8a66597_type(ep->bmAttributes
839 & USB_ENDPOINT_XFERTYPE_MASK);
840 info.bufnum = get_bufnum(info.pipenum);
841 info.buf_bsize = get_buf_bsize(info.pipenum);
842 info.interval = ep->bInterval;
843 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
844 info.dir_in = 1;
845 else
846 info.dir_in = 0;
847
848 enable_r8a66597_pipe(r8a66597, urb, hep, &info);
849 }
850
851 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
852 {
853 struct r8a66597_device *dev;
854
855 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
856 dev->state = USB_STATE_CONFIGURED;
857 }
858
859 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
860 u16 pipenum)
861 {
862 if (pipenum == 0 && usb_pipeout(urb->pipe))
863 enable_irq_empty(r8a66597, pipenum);
864 else
865 enable_irq_ready(r8a66597, pipenum);
866
867 if (!usb_pipeisoc(urb->pipe))
868 enable_irq_nrdy(r8a66597, pipenum);
869 }
870
871 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
872 {
873 disable_irq_ready(r8a66597, pipenum);
874 disable_irq_nrdy(r8a66597, pipenum);
875 }
876
877 /* this function must be called with interrupt disabled */
878 static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
879 {
880 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
881 | (1 << USB_PORT_FEAT_C_CONNECTION);
882 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
883 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
884 }
885
886 /* this function must be called with interrupt disabled */
887 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
888 {
889 u16 speed = get_rh_usb_speed(r8a66597, port);
890 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
891
892 if (speed == HSMODE)
893 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
894 else if (speed == LSMODE)
895 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
896
897 rh->port &= ~(1 << USB_PORT_FEAT_RESET);
898 rh->port |= 1 << USB_PORT_FEAT_ENABLE;
899 }
900
901 /* this function must be called with interrupt disabled */
902 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
903 {
904 struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
905
906 r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
907 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
908
909 disable_r8a66597_pipe_all(r8a66597, dev);
910 free_usb_address(r8a66597, dev);
911
912 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
913 }
914
915 /* this function must be called with interrupt disabled */
916 static void prepare_setup_packet(struct r8a66597 *r8a66597,
917 struct r8a66597_td *td)
918 {
919 int i;
920 u16 *p = (u16 *)td->urb->setup_packet;
921 unsigned long setup_addr = USBREQ;
922
923 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
924 DCPMAXP);
925 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
926
927 for (i = 0; i < 4; i++) {
928 r8a66597_write(r8a66597, cpu_to_le16(p[i]), setup_addr);
929 setup_addr += 2;
930 }
931 r8a66597_write(r8a66597, SUREQ, DCPCTR);
932 }
933
934 /* this function must be called with interrupt disabled */
935 static void prepare_packet_read(struct r8a66597 *r8a66597,
936 struct r8a66597_td *td)
937 {
938 struct urb *urb = td->urb;
939
940 if (usb_pipecontrol(urb->pipe)) {
941 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
942 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
943 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
944 if (urb->actual_length == 0) {
945 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
946 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
947 }
948 pipe_irq_disable(r8a66597, td->pipenum);
949 pipe_start(r8a66597, td->pipe);
950 pipe_irq_enable(r8a66597, urb, td->pipenum);
951 } else {
952 if (urb->actual_length == 0) {
953 pipe_irq_disable(r8a66597, td->pipenum);
954 pipe_setting(r8a66597, td);
955 pipe_stop(r8a66597, td->pipe);
956 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
957
958 if (td->pipe->pipetre) {
959 r8a66597_write(r8a66597, TRCLR,
960 td->pipe->pipetre);
961 r8a66597_write(r8a66597,
962 (urb->transfer_buffer_length
963 + td->maxpacket - 1)
964 / td->maxpacket,
965 td->pipe->pipetrn);
966 r8a66597_bset(r8a66597, TRENB,
967 td->pipe->pipetre);
968 }
969
970 pipe_start(r8a66597, td->pipe);
971 pipe_irq_enable(r8a66597, urb, td->pipenum);
972 }
973 }
974 }
975
976 /* this function must be called with interrupt disabled */
977 static void prepare_packet_write(struct r8a66597 *r8a66597,
978 struct r8a66597_td *td)
979 {
980 u16 tmp;
981 struct urb *urb = td->urb;
982
983 if (usb_pipecontrol(urb->pipe)) {
984 pipe_stop(r8a66597, td->pipe);
985 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
986 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
987 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
988 if (urb->actual_length == 0) {
989 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
990 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
991 }
992 } else {
993 if (urb->actual_length == 0)
994 pipe_setting(r8a66597, td);
995 if (td->pipe->pipetre)
996 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
997 }
998 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
999
1000 fifo_change_from_pipe(r8a66597, td->pipe);
1001 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1002 if (unlikely((tmp & FRDY) == 0))
1003 pipe_irq_enable(r8a66597, urb, td->pipenum);
1004 else
1005 packet_write(r8a66597, td->pipenum);
1006 pipe_start(r8a66597, td->pipe);
1007 }
1008
1009 /* this function must be called with interrupt disabled */
1010 static void prepare_status_packet(struct r8a66597 *r8a66597,
1011 struct r8a66597_td *td)
1012 {
1013 struct urb *urb = td->urb;
1014
1015 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1016 pipe_stop(r8a66597, td->pipe);
1017
1018 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1019 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1020 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1021 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1022 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1023 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1024 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
1025 enable_irq_empty(r8a66597, 0);
1026 } else {
1027 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1028 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1029 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1030 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1031 enable_irq_ready(r8a66597, 0);
1032 }
1033 enable_irq_nrdy(r8a66597, 0);
1034 pipe_start(r8a66597, td->pipe);
1035 }
1036
1037 static int is_set_address(unsigned char *setup_packet)
1038 {
1039 if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1040 setup_packet[1] == USB_REQ_SET_ADDRESS)
1041 return 1;
1042 else
1043 return 0;
1044 }
1045
1046 /* this function must be called with interrupt disabled */
1047 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1048 {
1049 BUG_ON(!td);
1050
1051 switch (td->type) {
1052 case USB_PID_SETUP:
1053 if (is_set_address(td->urb->setup_packet)) {
1054 td->set_address = 1;
1055 td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1056 td->urb);
1057 if (td->urb->setup_packet[2] == 0)
1058 return -EPIPE;
1059 }
1060 prepare_setup_packet(r8a66597, td);
1061 break;
1062 case USB_PID_IN:
1063 prepare_packet_read(r8a66597, td);
1064 break;
1065 case USB_PID_OUT:
1066 prepare_packet_write(r8a66597, td);
1067 break;
1068 case USB_PID_ACK:
1069 prepare_status_packet(r8a66597, td);
1070 break;
1071 default:
1072 err("invalid type.");
1073 break;
1074 }
1075
1076 return 0;
1077 }
1078
1079 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1080 {
1081 if (usb_pipeisoc(urb->pipe)) {
1082 if (urb->number_of_packets == td->iso_cnt)
1083 return 1;
1084 }
1085
1086 /* control or bulk or interrupt */
1087 if ((urb->transfer_buffer_length <= urb->actual_length) ||
1088 (td->short_packet) || (td->zero_packet))
1089 return 1;
1090
1091 return 0;
1092 }
1093
1094 /* this function must be called with interrupt disabled */
1095 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1096 {
1097 unsigned long time;
1098
1099 BUG_ON(!td);
1100
1101 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1102 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1103 r8a66597->timeout_map |= 1 << td->pipenum;
1104 switch (usb_pipetype(td->urb->pipe)) {
1105 case PIPE_INTERRUPT:
1106 case PIPE_ISOCHRONOUS:
1107 time = 30;
1108 break;
1109 default:
1110 time = 300;
1111 break;
1112 }
1113
1114 mod_timer(&r8a66597->td_timer[td->pipenum],
1115 jiffies + msecs_to_jiffies(time));
1116 }
1117 }
1118
1119 /* this function must be called with interrupt disabled */
1120 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1121 u16 pipenum, struct urb *urb, int status)
1122 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1123 {
1124 int restart = 0;
1125 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1126
1127 r8a66597->timeout_map &= ~(1 << pipenum);
1128
1129 if (likely(td)) {
1130 if (td->set_address && (status != 0 || urb->unlinked))
1131 r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1132
1133 pipe_toggle_save(r8a66597, td->pipe, urb);
1134 list_del(&td->queue);
1135 kfree(td);
1136 }
1137
1138 if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1139 restart = 1;
1140
1141 if (likely(urb)) {
1142 if (usb_pipeisoc(urb->pipe))
1143 urb->start_frame = r8a66597_get_frame(hcd);
1144
1145 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1146 spin_unlock(&r8a66597->lock);
1147 usb_hcd_giveback_urb(hcd, urb, status);
1148 spin_lock(&r8a66597->lock);
1149 }
1150
1151 if (restart) {
1152 td = r8a66597_get_td(r8a66597, pipenum);
1153 if (unlikely(!td))
1154 return;
1155
1156 start_transfer(r8a66597, td);
1157 set_td_timer(r8a66597, td);
1158 }
1159 }
1160
1161 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1162 {
1163 u16 tmp;
1164 int rcv_len, bufsize, urb_len, size;
1165 u16 *buf;
1166 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1167 struct urb *urb;
1168 int finish = 0;
1169 int status = 0;
1170
1171 if (unlikely(!td))
1172 return;
1173 urb = td->urb;
1174
1175 fifo_change_from_pipe(r8a66597, td->pipe);
1176 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1177 if (unlikely((tmp & FRDY) == 0)) {
1178 pipe_stop(r8a66597, td->pipe);
1179 pipe_irq_disable(r8a66597, pipenum);
1180 err("in fifo not ready (%d)", pipenum);
1181 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1182 return;
1183 }
1184
1185 /* prepare parameters */
1186 rcv_len = tmp & DTLN;
1187 if (usb_pipeisoc(urb->pipe)) {
1188 buf = (u16 *)(urb->transfer_buffer +
1189 urb->iso_frame_desc[td->iso_cnt].offset);
1190 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1191 } else {
1192 buf = (void *)urb->transfer_buffer + urb->actual_length;
1193 urb_len = urb->transfer_buffer_length - urb->actual_length;
1194 }
1195 bufsize = min(urb_len, (int) td->maxpacket);
1196 if (rcv_len <= bufsize) {
1197 size = rcv_len;
1198 } else {
1199 size = bufsize;
1200 status = -EOVERFLOW;
1201 finish = 1;
1202 }
1203
1204 /* update parameters */
1205 urb->actual_length += size;
1206 if (rcv_len == 0)
1207 td->zero_packet = 1;
1208 if (rcv_len < bufsize) {
1209 td->short_packet = 1;
1210 }
1211 if (usb_pipeisoc(urb->pipe)) {
1212 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1213 urb->iso_frame_desc[td->iso_cnt].status = status;
1214 td->iso_cnt++;
1215 finish = 0;
1216 }
1217
1218 /* check transfer finish */
1219 if (finish || check_transfer_finish(td, urb)) {
1220 pipe_stop(r8a66597, td->pipe);
1221 pipe_irq_disable(r8a66597, pipenum);
1222 finish = 1;
1223 }
1224
1225 /* read fifo */
1226 if (urb->transfer_buffer) {
1227 if (size == 0)
1228 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1229 else
1230 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1231 buf, size);
1232 }
1233
1234 if (finish && pipenum != 0)
1235 finish_request(r8a66597, td, pipenum, urb, status);
1236 }
1237
1238 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1239 {
1240 u16 tmp;
1241 int bufsize, size;
1242 u16 *buf;
1243 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1244 struct urb *urb;
1245
1246 if (unlikely(!td))
1247 return;
1248 urb = td->urb;
1249
1250 fifo_change_from_pipe(r8a66597, td->pipe);
1251 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1252 if (unlikely((tmp & FRDY) == 0)) {
1253 pipe_stop(r8a66597, td->pipe);
1254 pipe_irq_disable(r8a66597, pipenum);
1255 err("out write fifo not ready. (%d)", pipenum);
1256 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1257 return;
1258 }
1259
1260 /* prepare parameters */
1261 bufsize = td->maxpacket;
1262 if (usb_pipeisoc(urb->pipe)) {
1263 buf = (u16 *)(urb->transfer_buffer +
1264 urb->iso_frame_desc[td->iso_cnt].offset);
1265 size = min(bufsize,
1266 (int)urb->iso_frame_desc[td->iso_cnt].length);
1267 } else {
1268 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1269 size = min((int)bufsize,
1270 urb->transfer_buffer_length - urb->actual_length);
1271 }
1272
1273 /* write fifo */
1274 if (pipenum > 0)
1275 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1276 if (urb->transfer_buffer) {
1277 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1278 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1279 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1280 }
1281
1282 /* update parameters */
1283 urb->actual_length += size;
1284 if (usb_pipeisoc(urb->pipe)) {
1285 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1286 urb->iso_frame_desc[td->iso_cnt].status = 0;
1287 td->iso_cnt++;
1288 }
1289
1290 /* check transfer finish */
1291 if (check_transfer_finish(td, urb)) {
1292 disable_irq_ready(r8a66597, pipenum);
1293 enable_irq_empty(r8a66597, pipenum);
1294 if (!usb_pipeisoc(urb->pipe))
1295 enable_irq_nrdy(r8a66597, pipenum);
1296 } else
1297 pipe_irq_enable(r8a66597, urb, pipenum);
1298 }
1299
1300
1301 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1302 {
1303 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1304 struct urb *urb;
1305 u8 finish = 0;
1306
1307 if (unlikely(!td))
1308 return;
1309 urb = td->urb;
1310
1311 switch (td->type) {
1312 case USB_PID_IN:
1313 case USB_PID_OUT:
1314 if (check_transfer_finish(td, urb))
1315 td->type = USB_PID_ACK;
1316 break;
1317 case USB_PID_SETUP:
1318 if (urb->transfer_buffer_length == urb->actual_length)
1319 td->type = USB_PID_ACK;
1320 else if (usb_pipeout(urb->pipe))
1321 td->type = USB_PID_OUT;
1322 else
1323 td->type = USB_PID_IN;
1324 break;
1325 case USB_PID_ACK:
1326 finish = 1;
1327 break;
1328 }
1329
1330 if (finish || status != 0 || urb->unlinked)
1331 finish_request(r8a66597, td, 0, urb, status);
1332 else
1333 start_transfer(r8a66597, td);
1334 }
1335
1336 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1337 {
1338 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1339
1340 if (td) {
1341 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1342
1343 if (pid == PID_NAK)
1344 return -ECONNRESET;
1345 else
1346 return -EPIPE;
1347 }
1348 return 0;
1349 }
1350
1351 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1352 {
1353 u16 check;
1354 u16 pipenum;
1355 u16 mask;
1356 struct r8a66597_td *td;
1357
1358 mask = r8a66597_read(r8a66597, BRDYSTS)
1359 & r8a66597_read(r8a66597, BRDYENB);
1360 r8a66597_write(r8a66597, ~mask, BRDYSTS);
1361 if (mask & BRDY0) {
1362 td = r8a66597_get_td(r8a66597, 0);
1363 if (td && td->type == USB_PID_IN)
1364 packet_read(r8a66597, 0);
1365 else
1366 pipe_irq_disable(r8a66597, 0);
1367 check_next_phase(r8a66597, 0);
1368 }
1369
1370 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1371 check = 1 << pipenum;
1372 if (mask & check) {
1373 td = r8a66597_get_td(r8a66597, pipenum);
1374 if (unlikely(!td))
1375 continue;
1376
1377 if (td->type == USB_PID_IN)
1378 packet_read(r8a66597, pipenum);
1379 else if (td->type == USB_PID_OUT)
1380 packet_write(r8a66597, pipenum);
1381 }
1382 }
1383 }
1384
1385 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1386 {
1387 u16 tmp;
1388 u16 check;
1389 u16 pipenum;
1390 u16 mask;
1391 struct r8a66597_td *td;
1392
1393 mask = r8a66597_read(r8a66597, BEMPSTS)
1394 & r8a66597_read(r8a66597, BEMPENB);
1395 r8a66597_write(r8a66597, ~mask, BEMPSTS);
1396 if (mask & BEMP0) {
1397 cfifo_change(r8a66597, 0);
1398 td = r8a66597_get_td(r8a66597, 0);
1399 if (td && td->type != USB_PID_OUT)
1400 disable_irq_empty(r8a66597, 0);
1401 check_next_phase(r8a66597, 0);
1402 }
1403
1404 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1405 check = 1 << pipenum;
1406 if (mask & check) {
1407 struct r8a66597_td *td;
1408 td = r8a66597_get_td(r8a66597, pipenum);
1409 if (unlikely(!td))
1410 continue;
1411
1412 tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1413 if ((tmp & INBUFM) == 0) {
1414 disable_irq_empty(r8a66597, pipenum);
1415 pipe_irq_disable(r8a66597, pipenum);
1416 finish_request(r8a66597, td, pipenum, td->urb,
1417 0);
1418 }
1419 }
1420 }
1421 }
1422
1423 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1424 {
1425 u16 check;
1426 u16 pipenum;
1427 u16 mask;
1428 int status;
1429
1430 mask = r8a66597_read(r8a66597, NRDYSTS)
1431 & r8a66597_read(r8a66597, NRDYENB);
1432 r8a66597_write(r8a66597, ~mask, NRDYSTS);
1433 if (mask & NRDY0) {
1434 cfifo_change(r8a66597, 0);
1435 status = get_urb_error(r8a66597, 0);
1436 pipe_irq_disable(r8a66597, 0);
1437 check_next_phase(r8a66597, status);
1438 }
1439
1440 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1441 check = 1 << pipenum;
1442 if (mask & check) {
1443 struct r8a66597_td *td;
1444 td = r8a66597_get_td(r8a66597, pipenum);
1445 if (unlikely(!td))
1446 continue;
1447
1448 status = get_urb_error(r8a66597, pipenum);
1449 pipe_irq_disable(r8a66597, pipenum);
1450 pipe_stop(r8a66597, td->pipe);
1451 finish_request(r8a66597, td, pipenum, td->urb, status);
1452 }
1453 }
1454 }
1455
1456 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1457 {
1458 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1459
1460 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1461 rh->scount = R8A66597_MAX_SAMPLING;
1462 mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
1463 }
1464
1465 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1466 {
1467 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1468 u16 intsts0, intsts1, intsts2;
1469 u16 intenb0, intenb1, intenb2;
1470 u16 mask0, mask1, mask2;
1471 int status;
1472
1473 spin_lock(&r8a66597->lock);
1474
1475 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1476 intsts1 = r8a66597_read(r8a66597, INTSTS1);
1477 intsts2 = r8a66597_read(r8a66597, INTSTS2);
1478 intenb0 = r8a66597_read(r8a66597, INTENB0);
1479 intenb1 = r8a66597_read(r8a66597, INTENB1);
1480 intenb2 = r8a66597_read(r8a66597, INTENB2);
1481
1482 mask2 = intsts2 & intenb2;
1483 mask1 = intsts1 & intenb1;
1484 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1485 if (mask2) {
1486 if (mask2 & ATTCH) {
1487 r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1488 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1489
1490 /* start usb bus sampling */
1491 start_root_hub_sampling(r8a66597, 1);
1492 }
1493 if (mask2 & DTCH) {
1494 r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1495 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1496 r8a66597_usb_disconnect(r8a66597, 1);
1497 }
1498 }
1499
1500 if (mask1) {
1501 if (mask1 & ATTCH) {
1502 r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1503 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1504
1505 /* start usb bus sampling */
1506 start_root_hub_sampling(r8a66597, 0);
1507 }
1508 if (mask1 & DTCH) {
1509 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1510 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1511 r8a66597_usb_disconnect(r8a66597, 0);
1512 }
1513 if (mask1 & SIGN) {
1514 r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1515 status = get_urb_error(r8a66597, 0);
1516 check_next_phase(r8a66597, status);
1517 }
1518 if (mask1 & SACK) {
1519 r8a66597_write(r8a66597, ~SACK, INTSTS1);
1520 check_next_phase(r8a66597, 0);
1521 }
1522 }
1523 if (mask0) {
1524 if (mask0 & BRDY)
1525 irq_pipe_ready(r8a66597);
1526 if (mask0 & BEMP)
1527 irq_pipe_empty(r8a66597);
1528 if (mask0 & NRDY)
1529 irq_pipe_nrdy(r8a66597);
1530 }
1531
1532 spin_unlock(&r8a66597->lock);
1533 return IRQ_HANDLED;
1534 }
1535
1536 /* this function must be called with interrupt disabled */
1537 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1538 {
1539 u16 tmp;
1540 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1541
1542 if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1543 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1544
1545 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1546 if ((tmp & USBRST) == USBRST) {
1547 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1548 dvstctr_reg);
1549 mod_timer(&r8a66597->rh_timer,
1550 jiffies + msecs_to_jiffies(50));
1551 } else
1552 r8a66597_usb_connect(r8a66597, port);
1553 }
1554
1555 if (rh->scount > 0) {
1556 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1557 if (tmp == rh->old_syssts) {
1558 rh->scount--;
1559 if (rh->scount == 0) {
1560 if (tmp == FS_JSTS) {
1561 r8a66597_bset(r8a66597, HSE,
1562 get_syscfg_reg(port));
1563 r8a66597_usb_preconnect(r8a66597, port);
1564 } else if (tmp == LS_JSTS) {
1565 r8a66597_bclr(r8a66597, HSE,
1566 get_syscfg_reg(port));
1567 r8a66597_usb_preconnect(r8a66597, port);
1568 } else if (tmp == SE0)
1569 r8a66597_bset(r8a66597, ATTCHE,
1570 get_intenb_reg(port));
1571 } else {
1572 mod_timer(&r8a66597->rh_timer,
1573 jiffies + msecs_to_jiffies(50));
1574 }
1575 } else {
1576 rh->scount = R8A66597_MAX_SAMPLING;
1577 rh->old_syssts = tmp;
1578 mod_timer(&r8a66597->rh_timer,
1579 jiffies + msecs_to_jiffies(50));
1580 }
1581 }
1582 }
1583
1584 static void r8a66597_td_timer(unsigned long _r8a66597)
1585 {
1586 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1587 unsigned long flags;
1588 u16 pipenum;
1589 struct r8a66597_td *td, *new_td = NULL;
1590 struct r8a66597_pipe *pipe;
1591
1592 spin_lock_irqsave(&r8a66597->lock, flags);
1593 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1594 if (!(r8a66597->timeout_map & (1 << pipenum)))
1595 continue;
1596 if (timer_pending(&r8a66597->td_timer[pipenum]))
1597 continue;
1598
1599 td = r8a66597_get_td(r8a66597, pipenum);
1600 if (!td) {
1601 r8a66597->timeout_map &= ~(1 << pipenum);
1602 continue;
1603 }
1604
1605 if (td->urb->actual_length) {
1606 set_td_timer(r8a66597, td);
1607 break;
1608 }
1609
1610 pipe = td->pipe;
1611 pipe_stop(r8a66597, pipe);
1612
1613 new_td = td;
1614 do {
1615 list_move_tail(&new_td->queue,
1616 &r8a66597->pipe_queue[pipenum]);
1617 new_td = r8a66597_get_td(r8a66597, pipenum);
1618 if (!new_td) {
1619 new_td = td;
1620 break;
1621 }
1622 } while (td != new_td && td->address == new_td->address);
1623
1624 start_transfer(r8a66597, new_td);
1625
1626 if (td == new_td)
1627 r8a66597->timeout_map &= ~(1 << pipenum);
1628 else
1629 set_td_timer(r8a66597, new_td);
1630 break;
1631 }
1632 spin_unlock_irqrestore(&r8a66597->lock, flags);
1633 }
1634
1635 static void r8a66597_timer(unsigned long _r8a66597)
1636 {
1637 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1638 unsigned long flags;
1639
1640 spin_lock_irqsave(&r8a66597->lock, flags);
1641
1642 r8a66597_root_hub_control(r8a66597, 0);
1643 r8a66597_root_hub_control(r8a66597, 1);
1644
1645 spin_unlock_irqrestore(&r8a66597->lock, flags);
1646 }
1647
1648 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1649 {
1650 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1651
1652 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1653 (urb->dev->state == USB_STATE_CONFIGURED))
1654 return 1;
1655 else
1656 return 0;
1657 }
1658
1659 static int r8a66597_start(struct usb_hcd *hcd)
1660 {
1661 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1662
1663 hcd->state = HC_STATE_RUNNING;
1664 return enable_controller(r8a66597);
1665 }
1666
1667 static void r8a66597_stop(struct usb_hcd *hcd)
1668 {
1669 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1670
1671 disable_controller(r8a66597);
1672 }
1673
1674 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1675 {
1676 unsigned int usb_address = usb_pipedevice(urb->pipe);
1677 u16 root_port, hub_port;
1678
1679 if (usb_address == 0) {
1680 get_port_number(urb->dev->devpath,
1681 &root_port, &hub_port);
1682 set_devadd_reg(r8a66597, 0,
1683 get_r8a66597_usb_speed(urb->dev->speed),
1684 get_parent_r8a66597_address(r8a66597, urb->dev),
1685 hub_port, root_port);
1686 }
1687 }
1688
1689 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1690 struct urb *urb,
1691 struct usb_host_endpoint *hep)
1692 {
1693 struct r8a66597_td *td;
1694 u16 pipenum;
1695
1696 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1697 if (td == NULL)
1698 return NULL;
1699
1700 pipenum = r8a66597_get_pipenum(urb, hep);
1701 td->pipenum = pipenum;
1702 td->pipe = hep->hcpriv;
1703 td->urb = urb;
1704 td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1705 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1706 !usb_pipein(urb->pipe));
1707 if (usb_pipecontrol(urb->pipe))
1708 td->type = USB_PID_SETUP;
1709 else if (usb_pipein(urb->pipe))
1710 td->type = USB_PID_IN;
1711 else
1712 td->type = USB_PID_OUT;
1713 INIT_LIST_HEAD(&td->queue);
1714
1715 return td;
1716 }
1717
1718 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1719 struct urb *urb,
1720 gfp_t mem_flags)
1721 {
1722 struct usb_host_endpoint *hep = urb->ep;
1723 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1724 struct r8a66597_td *td = NULL;
1725 int ret, request = 0;
1726 unsigned long flags;
1727
1728 spin_lock_irqsave(&r8a66597->lock, flags);
1729 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1730 ret = -ENODEV;
1731 goto error_not_linked;
1732 }
1733
1734 ret = usb_hcd_link_urb_to_ep(hcd, urb);
1735 if (ret)
1736 goto error_not_linked;
1737
1738 if (!hep->hcpriv) {
1739 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1740 GFP_ATOMIC);
1741 if (!hep->hcpriv) {
1742 ret = -ENOMEM;
1743 goto error;
1744 }
1745 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1746 if (usb_pipeendpoint(urb->pipe))
1747 init_pipe_info(r8a66597, urb, hep, &hep->desc);
1748 }
1749
1750 if (unlikely(check_pipe_config(r8a66597, urb)))
1751 init_pipe_config(r8a66597, urb);
1752
1753 set_address_zero(r8a66597, urb);
1754 td = r8a66597_make_td(r8a66597, urb, hep);
1755 if (td == NULL) {
1756 ret = -ENOMEM;
1757 goto error;
1758 }
1759 if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1760 request = 1;
1761 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1762 urb->hcpriv = td;
1763
1764 if (request) {
1765 ret = start_transfer(r8a66597, td);
1766 if (ret < 0) {
1767 list_del(&td->queue);
1768 kfree(td);
1769 }
1770 } else
1771 set_td_timer(r8a66597, td);
1772
1773 error:
1774 if (ret)
1775 usb_hcd_unlink_urb_from_ep(hcd, urb);
1776 error_not_linked:
1777 spin_unlock_irqrestore(&r8a66597->lock, flags);
1778 return ret;
1779 }
1780
1781 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1782 int status)
1783 {
1784 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1785 struct r8a66597_td *td;
1786 unsigned long flags;
1787 int rc;
1788
1789 spin_lock_irqsave(&r8a66597->lock, flags);
1790 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1791 if (rc)
1792 goto done;
1793
1794 if (urb->hcpriv) {
1795 td = urb->hcpriv;
1796 pipe_stop(r8a66597, td->pipe);
1797 pipe_irq_disable(r8a66597, td->pipenum);
1798 disable_irq_empty(r8a66597, td->pipenum);
1799 finish_request(r8a66597, td, td->pipenum, urb, status);
1800 }
1801 done:
1802 spin_unlock_irqrestore(&r8a66597->lock, flags);
1803 return rc;
1804 }
1805
1806 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1807 struct usb_host_endpoint *hep)
1808 {
1809 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1810 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1811 struct r8a66597_td *td;
1812 struct urb *urb = NULL;
1813 u16 pipenum;
1814 unsigned long flags;
1815
1816 if (pipe == NULL)
1817 return;
1818 pipenum = pipe->info.pipenum;
1819
1820 if (pipenum == 0) {
1821 kfree(hep->hcpriv);
1822 hep->hcpriv = NULL;
1823 return;
1824 }
1825
1826 spin_lock_irqsave(&r8a66597->lock, flags);
1827 pipe_stop(r8a66597, pipe);
1828 pipe_irq_disable(r8a66597, pipenum);
1829 disable_irq_empty(r8a66597, pipenum);
1830 td = r8a66597_get_td(r8a66597, pipenum);
1831 if (td)
1832 urb = td->urb;
1833 finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1834 kfree(hep->hcpriv);
1835 hep->hcpriv = NULL;
1836 spin_unlock_irqrestore(&r8a66597->lock, flags);
1837 }
1838
1839 static int r8a66597_get_frame(struct usb_hcd *hcd)
1840 {
1841 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1842 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1843 }
1844
1845 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1846 {
1847 int chix;
1848
1849 if (udev->state == USB_STATE_CONFIGURED &&
1850 udev->parent && udev->parent->devnum > 1 &&
1851 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1852 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1853
1854 for (chix = 0; chix < udev->maxchild; chix++) {
1855 struct usb_device *childdev = udev->children[chix];
1856
1857 if (childdev)
1858 collect_usb_address_map(childdev, map);
1859 }
1860 }
1861
1862 /* this function must be called with interrupt disabled */
1863 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1864 int addr)
1865 {
1866 struct r8a66597_device *dev;
1867 struct list_head *list = &r8a66597->child_device;
1868
1869 list_for_each_entry(dev, list, device_list) {
1870 if (!dev)
1871 continue;
1872 if (dev->usb_address != addr)
1873 continue;
1874
1875 return dev;
1876 }
1877
1878 err("get_r8a66597_device fail.(%d)\n", addr);
1879 return NULL;
1880 }
1881
1882 static void update_usb_address_map(struct r8a66597 *r8a66597,
1883 struct usb_device *root_hub,
1884 unsigned long *map)
1885 {
1886 int i, j, addr;
1887 unsigned long diff;
1888 unsigned long flags;
1889
1890 for (i = 0; i < 4; i++) {
1891 diff = r8a66597->child_connect_map[i] ^ map[i];
1892 if (!diff)
1893 continue;
1894
1895 for (j = 0; j < 32; j++) {
1896 if (!(diff & (1 << j)))
1897 continue;
1898
1899 addr = i * 32 + j;
1900 if (map[i] & (1 << j))
1901 set_child_connect_map(r8a66597, addr);
1902 else {
1903 struct r8a66597_device *dev;
1904
1905 spin_lock_irqsave(&r8a66597->lock, flags);
1906 dev = get_r8a66597_device(r8a66597, addr);
1907 disable_r8a66597_pipe_all(r8a66597, dev);
1908 free_usb_address(r8a66597, dev);
1909 put_child_connect_map(r8a66597, addr);
1910 spin_unlock_irqrestore(&r8a66597->lock, flags);
1911 }
1912 }
1913 }
1914 }
1915
1916 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
1917 struct usb_hcd *hcd)
1918 {
1919 struct usb_bus *bus;
1920 unsigned long now_map[4];
1921
1922 memset(now_map, 0, sizeof(now_map));
1923
1924 list_for_each_entry(bus, &usb_bus_list, bus_list) {
1925 if (!bus->root_hub)
1926 continue;
1927
1928 if (bus->busnum != hcd->self.busnum)
1929 continue;
1930
1931 collect_usb_address_map(bus->root_hub, now_map);
1932 update_usb_address_map(r8a66597, bus->root_hub, now_map);
1933 }
1934 }
1935
1936 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
1937 {
1938 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1939 unsigned long flags;
1940 int i;
1941
1942 r8a66597_check_detect_child(r8a66597, hcd);
1943
1944 spin_lock_irqsave(&r8a66597->lock, flags);
1945
1946 *buf = 0; /* initialize (no change) */
1947
1948 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
1949 if (r8a66597->root_hub[i].port & 0xffff0000)
1950 *buf |= 1 << (i + 1);
1951 }
1952
1953 spin_unlock_irqrestore(&r8a66597->lock, flags);
1954
1955 return (*buf != 0);
1956 }
1957
1958 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
1959 struct usb_hub_descriptor *desc)
1960 {
1961 desc->bDescriptorType = 0x29;
1962 desc->bHubContrCurrent = 0;
1963 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
1964 desc->bDescLength = 9;
1965 desc->bPwrOn2PwrGood = 0;
1966 desc->wHubCharacteristics = cpu_to_le16(0x0011);
1967 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
1968 desc->bitmap[1] = ~0;
1969 }
1970
1971 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1972 u16 wIndex, char *buf, u16 wLength)
1973 {
1974 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1975 int ret;
1976 int port = (wIndex & 0x00FF) - 1;
1977 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1978 unsigned long flags;
1979
1980 ret = 0;
1981
1982 spin_lock_irqsave(&r8a66597->lock, flags);
1983 switch (typeReq) {
1984 case ClearHubFeature:
1985 case SetHubFeature:
1986 switch (wValue) {
1987 case C_HUB_OVER_CURRENT:
1988 case C_HUB_LOCAL_POWER:
1989 break;
1990 default:
1991 goto error;
1992 }
1993 break;
1994 case ClearPortFeature:
1995 if (wIndex > R8A66597_MAX_ROOT_HUB)
1996 goto error;
1997 if (wLength != 0)
1998 goto error;
1999
2000 switch (wValue) {
2001 case USB_PORT_FEAT_ENABLE:
2002 rh->port &= (1 << USB_PORT_FEAT_POWER);
2003 break;
2004 case USB_PORT_FEAT_SUSPEND:
2005 break;
2006 case USB_PORT_FEAT_POWER:
2007 r8a66597_port_power(r8a66597, port, 0);
2008 break;
2009 case USB_PORT_FEAT_C_ENABLE:
2010 case USB_PORT_FEAT_C_SUSPEND:
2011 case USB_PORT_FEAT_C_CONNECTION:
2012 case USB_PORT_FEAT_C_OVER_CURRENT:
2013 case USB_PORT_FEAT_C_RESET:
2014 break;
2015 default:
2016 goto error;
2017 }
2018 rh->port &= ~(1 << wValue);
2019 break;
2020 case GetHubDescriptor:
2021 r8a66597_hub_descriptor(r8a66597,
2022 (struct usb_hub_descriptor *)buf);
2023 break;
2024 case GetHubStatus:
2025 *buf = 0x00;
2026 break;
2027 case GetPortStatus:
2028 if (wIndex > R8A66597_MAX_ROOT_HUB)
2029 goto error;
2030 *(u32 *)buf = cpu_to_le32(rh->port);
2031 break;
2032 case SetPortFeature:
2033 if (wIndex > R8A66597_MAX_ROOT_HUB)
2034 goto error;
2035 if (wLength != 0)
2036 goto error;
2037
2038 switch (wValue) {
2039 case USB_PORT_FEAT_SUSPEND:
2040 break;
2041 case USB_PORT_FEAT_POWER:
2042 r8a66597_port_power(r8a66597, port, 1);
2043 rh->port |= (1 << USB_PORT_FEAT_POWER);
2044 break;
2045 case USB_PORT_FEAT_RESET: {
2046 struct r8a66597_device *dev = rh->dev;
2047
2048 rh->port |= (1 << USB_PORT_FEAT_RESET);
2049
2050 disable_r8a66597_pipe_all(r8a66597, dev);
2051 free_usb_address(r8a66597, dev);
2052
2053 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2054 get_dvstctr_reg(port));
2055 mod_timer(&r8a66597->rh_timer,
2056 jiffies + msecs_to_jiffies(50));
2057 }
2058 break;
2059 default:
2060 goto error;
2061 }
2062 rh->port |= 1 << wValue;
2063 break;
2064 default:
2065 error:
2066 ret = -EPIPE;
2067 break;
2068 }
2069
2070 spin_unlock_irqrestore(&r8a66597->lock, flags);
2071 return ret;
2072 }
2073
2074 static struct hc_driver r8a66597_hc_driver = {
2075 .description = hcd_name,
2076 .hcd_priv_size = sizeof(struct r8a66597),
2077 .irq = r8a66597_irq,
2078
2079 /*
2080 * generic hardware linkage
2081 */
2082 .flags = HCD_USB2,
2083
2084 .start = r8a66597_start,
2085 .stop = r8a66597_stop,
2086
2087 /*
2088 * managing i/o requests and associated device resources
2089 */
2090 .urb_enqueue = r8a66597_urb_enqueue,
2091 .urb_dequeue = r8a66597_urb_dequeue,
2092 .endpoint_disable = r8a66597_endpoint_disable,
2093
2094 /*
2095 * periodic schedule support
2096 */
2097 .get_frame_number = r8a66597_get_frame,
2098
2099 /*
2100 * root hub support
2101 */
2102 .hub_status_data = r8a66597_hub_status_data,
2103 .hub_control = r8a66597_hub_control,
2104 };
2105
2106 #if defined(CONFIG_PM)
2107 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2108 {
2109 pdev->dev.power.power_state = state;
2110 return 0;
2111 }
2112
2113 static int r8a66597_resume(struct platform_device *pdev)
2114 {
2115 pdev->dev.power.power_state = PMSG_ON;
2116 return 0;
2117 }
2118 #else /* if defined(CONFIG_PM) */
2119 #define r8a66597_suspend NULL
2120 #define r8a66597_resume NULL
2121 #endif
2122
2123 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2124 {
2125 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
2126 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2127
2128 del_timer_sync(&r8a66597->rh_timer);
2129 usb_remove_hcd(hcd);
2130 iounmap((void *)r8a66597->reg);
2131 usb_put_hcd(hcd);
2132 return 0;
2133 }
2134
2135 #define resource_len(r) (((r)->end - (r)->start) + 1)
2136 static int __init r8a66597_probe(struct platform_device *pdev)
2137 {
2138 struct resource *res = NULL;
2139 int irq = -1;
2140 void __iomem *reg = NULL;
2141 struct usb_hcd *hcd = NULL;
2142 struct r8a66597 *r8a66597;
2143 int ret = 0;
2144 int i;
2145
2146 if (pdev->dev.dma_mask) {
2147 ret = -EINVAL;
2148 err("dma not support");
2149 goto clean_up;
2150 }
2151
2152 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2153 (char *)hcd_name);
2154 if (!res) {
2155 ret = -ENODEV;
2156 err("platform_get_resource_byname error.");
2157 goto clean_up;
2158 }
2159
2160 irq = platform_get_irq(pdev, 0);
2161 if (irq < 0) {
2162 ret = -ENODEV;
2163 err("platform_get_irq error.");
2164 goto clean_up;
2165 }
2166
2167 reg = ioremap(res->start, resource_len(res));
2168 if (reg == NULL) {
2169 ret = -ENOMEM;
2170 err("ioremap error.");
2171 goto clean_up;
2172 }
2173
2174 /* initialize hcd */
2175 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2176 if (!hcd) {
2177 ret = -ENOMEM;
2178 err("Failed to create hcd");
2179 goto clean_up;
2180 }
2181 r8a66597 = hcd_to_r8a66597(hcd);
2182 memset(r8a66597, 0, sizeof(struct r8a66597));
2183 dev_set_drvdata(&pdev->dev, r8a66597);
2184
2185 spin_lock_init(&r8a66597->lock);
2186 init_timer(&r8a66597->rh_timer);
2187 r8a66597->rh_timer.function = r8a66597_timer;
2188 r8a66597->rh_timer.data = (unsigned long)r8a66597;
2189 r8a66597->reg = (unsigned long)reg;
2190
2191 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2192 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2193 init_timer(&r8a66597->td_timer[i]);
2194 r8a66597->td_timer[i].function = r8a66597_td_timer;
2195 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2196 }
2197 INIT_LIST_HEAD(&r8a66597->child_device);
2198
2199 hcd->rsrc_start = res->start;
2200 ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
2201 if (ret != 0) {
2202 err("Failed to add hcd");
2203 goto clean_up;
2204 }
2205
2206 return 0;
2207
2208 clean_up:
2209 if (reg)
2210 iounmap(reg);
2211
2212 return ret;
2213 }
2214
2215 static struct platform_driver r8a66597_driver = {
2216 .probe = r8a66597_probe,
2217 .remove = r8a66597_remove,
2218 .suspend = r8a66597_suspend,
2219 .resume = r8a66597_resume,
2220 .driver = {
2221 .name = (char *) hcd_name,
2222 },
2223 };
2224
2225 static int __init r8a66597_init(void)
2226 {
2227 if (usb_disabled())
2228 return -ENODEV;
2229
2230 info("driver %s, %s", hcd_name, DRIVER_VERSION);
2231 return platform_driver_register(&r8a66597_driver);
2232 }
2233 module_init(r8a66597_init);
2234
2235 static void __exit r8a66597_cleanup(void)
2236 {
2237 platform_driver_unregister(&r8a66597_driver);
2238 }
2239 module_exit(r8a66597_cleanup);
2240
WRT350N Kernel Patches