fd00f1e33fb53a77647c37e8646218313388e6c9
[linux-2.6.git] / drivers / usb / host / r8a66597-hcd.c
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 = 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, 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 /* this function must be called with interrupt disabled */
1038 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1039 {
1040         BUG_ON(!td);
1041
1042         switch (td->type) {
1043         case USB_PID_SETUP:
1044                 if (td->urb->setup_packet[1] == USB_REQ_SET_ADDRESS) {
1045                         td->set_address = 1;
1046                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1047                                                                      td->urb);
1048                         if (td->urb->setup_packet[2] == 0)
1049                                 return -EPIPE;
1050                 }
1051                 prepare_setup_packet(r8a66597, td);
1052                 break;
1053         case USB_PID_IN:
1054                 prepare_packet_read(r8a66597, td);
1055                 break;
1056         case USB_PID_OUT:
1057                 prepare_packet_write(r8a66597, td);
1058                 break;
1059         case USB_PID_ACK:
1060                 prepare_status_packet(r8a66597, td);
1061                 break;
1062         default:
1063                 err("invalid type.");
1064                 break;
1065         }
1066
1067         return 0;
1068 }
1069
1070 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1071 {
1072         if (usb_pipeisoc(urb->pipe)) {
1073                 if (urb->number_of_packets == td->iso_cnt)
1074                         return 1;
1075         }
1076
1077         /* control or bulk or interrupt */
1078         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1079             (td->short_packet) || (td->zero_packet))
1080                 return 1;
1081
1082         return 0;
1083 }
1084
1085 /* this function must be called with interrupt disabled */
1086 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1087 {
1088         unsigned long time;
1089
1090         BUG_ON(!td);
1091
1092         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1093             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1094                 r8a66597->timeout_map |= 1 << td->pipenum;
1095                 switch (usb_pipetype(td->urb->pipe)) {
1096                 case PIPE_INTERRUPT:
1097                 case PIPE_ISOCHRONOUS:
1098                         time = 30;
1099                         break;
1100                 default:
1101                         time = 300;
1102                         break;
1103                 }
1104
1105                 mod_timer(&r8a66597->td_timer[td->pipenum],
1106                           jiffies + msecs_to_jiffies(time));
1107         }
1108 }
1109
1110 /* this function must be called with interrupt disabled */
1111 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1112                 u16 pipenum, struct urb *urb, int status)
1113 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1114 {
1115         int restart = 0;
1116         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1117
1118         r8a66597->timeout_map &= ~(1 << pipenum);
1119
1120         if (likely(td)) {
1121                 if (td->set_address && (status != 0 || urb->unlinked))
1122                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1123
1124                 pipe_toggle_save(r8a66597, td->pipe, urb);
1125                 list_del(&td->queue);
1126                 kfree(td);
1127         }
1128
1129         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1130                 restart = 1;
1131
1132         if (likely(urb)) {
1133                 if (usb_pipeisoc(urb->pipe))
1134                         urb->start_frame = r8a66597_get_frame(hcd);
1135
1136                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1137                 spin_unlock(&r8a66597->lock);
1138                 usb_hcd_giveback_urb(hcd, urb, status);
1139                 spin_lock(&r8a66597->lock);
1140         }
1141
1142         if (restart) {
1143                 td = r8a66597_get_td(r8a66597, pipenum);
1144                 if (unlikely(!td))
1145                         return;
1146
1147                 start_transfer(r8a66597, td);
1148                 set_td_timer(r8a66597, td);
1149         }
1150 }
1151
1152 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1153 {
1154         u16 tmp;
1155         int rcv_len, bufsize, urb_len, size;
1156         u16 *buf;
1157         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1158         struct urb *urb;
1159         int finish = 0;
1160         int status = 0;
1161
1162         if (unlikely(!td))
1163                 return;
1164         urb = td->urb;
1165
1166         fifo_change_from_pipe(r8a66597, td->pipe);
1167         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1168         if (unlikely((tmp & FRDY) == 0)) {
1169                 pipe_stop(r8a66597, td->pipe);
1170                 pipe_irq_disable(r8a66597, pipenum);
1171                 err("in fifo not ready (%d)", pipenum);
1172                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1173                 return;
1174         }
1175
1176         /* prepare parameters */
1177         rcv_len = tmp & DTLN;
1178         if (usb_pipeisoc(urb->pipe)) {
1179                 buf = (u16 *)(urb->transfer_buffer +
1180                                 urb->iso_frame_desc[td->iso_cnt].offset);
1181                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1182         } else {
1183                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1184                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1185         }
1186         bufsize = min(urb_len, (int) td->maxpacket);
1187         if (rcv_len <= bufsize) {
1188                 size = rcv_len;
1189         } else {
1190                 size = bufsize;
1191                 status = -EOVERFLOW;
1192                 finish = 1;
1193         }
1194
1195         /* update parameters */
1196         urb->actual_length += size;
1197         if (rcv_len == 0)
1198                 td->zero_packet = 1;
1199         if (rcv_len < bufsize) {
1200                 td->short_packet = 1;
1201         }
1202         if (usb_pipeisoc(urb->pipe)) {
1203                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1204                 urb->iso_frame_desc[td->iso_cnt].status = status;
1205                 td->iso_cnt++;
1206                 finish = 0;
1207         }
1208
1209         /* check transfer finish */
1210         if (finish || check_transfer_finish(td, urb)) {
1211                 pipe_stop(r8a66597, td->pipe);
1212                 pipe_irq_disable(r8a66597, pipenum);
1213                 finish = 1;
1214         }
1215
1216         /* read fifo */
1217         if (urb->transfer_buffer) {
1218                 if (size == 0)
1219                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1220                 else
1221                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1222                                            buf, size);
1223         }
1224
1225         if (finish && pipenum != 0)
1226                 finish_request(r8a66597, td, pipenum, urb, status);
1227 }
1228
1229 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1230 {
1231         u16 tmp;
1232         int bufsize, size;
1233         u16 *buf;
1234         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1235         struct urb *urb;
1236
1237         if (unlikely(!td))
1238                 return;
1239         urb = td->urb;
1240
1241         fifo_change_from_pipe(r8a66597, td->pipe);
1242         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1243         if (unlikely((tmp & FRDY) == 0)) {
1244                 pipe_stop(r8a66597, td->pipe);
1245                 pipe_irq_disable(r8a66597, pipenum);
1246                 err("out write fifo not ready. (%d)", pipenum);
1247                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1248                 return;
1249         }
1250
1251         /* prepare parameters */
1252         bufsize = td->maxpacket;
1253         if (usb_pipeisoc(urb->pipe)) {
1254                 buf = (u16 *)(urb->transfer_buffer +
1255                                 urb->iso_frame_desc[td->iso_cnt].offset);
1256                 size = min(bufsize,
1257                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1258         } else {
1259                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1260                 size = min((int)bufsize,
1261                            urb->transfer_buffer_length - urb->actual_length);
1262         }
1263
1264         /* write fifo */
1265         if (pipenum > 0)
1266                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1267         if (urb->transfer_buffer) {
1268                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1269                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1270                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1271         }
1272
1273         /* update parameters */
1274         urb->actual_length += size;
1275         if (usb_pipeisoc(urb->pipe)) {
1276                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1277                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1278                 td->iso_cnt++;
1279         }
1280
1281         /* check transfer finish */
1282         if (check_transfer_finish(td, urb)) {
1283                 disable_irq_ready(r8a66597, pipenum);
1284                 enable_irq_empty(r8a66597, pipenum);
1285                 if (!usb_pipeisoc(urb->pipe))
1286                         enable_irq_nrdy(r8a66597, pipenum);
1287         } else
1288                 pipe_irq_enable(r8a66597, urb, pipenum);
1289 }
1290
1291
1292 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1293 {
1294         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1295         struct urb *urb;
1296         u8 finish = 0;
1297
1298         if (unlikely(!td))
1299                 return;
1300         urb = td->urb;
1301
1302         switch (td->type) {
1303         case USB_PID_IN:
1304         case USB_PID_OUT:
1305                 if (check_transfer_finish(td, urb))
1306                         td->type = USB_PID_ACK;
1307                 break;
1308         case USB_PID_SETUP:
1309                 if (urb->transfer_buffer_length == urb->actual_length)
1310                         td->type = USB_PID_ACK;
1311                 else if (usb_pipeout(urb->pipe))
1312                         td->type = USB_PID_OUT;
1313                 else
1314                         td->type = USB_PID_IN;
1315                 break;
1316         case USB_PID_ACK:
1317                 finish = 1;
1318                 break;
1319         }
1320
1321         if (finish || status != 0 || urb->unlinked)
1322                 finish_request(r8a66597, td, 0, urb, status);
1323         else
1324                 start_transfer(r8a66597, td);
1325 }
1326
1327 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1328 {
1329         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1330
1331         if (td) {
1332                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1333
1334                 if (pid == PID_NAK)
1335                         return -ECONNRESET;
1336                 else
1337                         return -EPIPE;
1338         }
1339         return 0;
1340 }
1341
1342 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1343 {
1344         u16 check;
1345         u16 pipenum;
1346         u16 mask;
1347         struct r8a66597_td *td;
1348
1349         mask = r8a66597_read(r8a66597, BRDYSTS)
1350                & r8a66597_read(r8a66597, BRDYENB);
1351         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1352         if (mask & BRDY0) {
1353                 td = r8a66597_get_td(r8a66597, 0);
1354                 if (td && td->type == USB_PID_IN)
1355                         packet_read(r8a66597, 0);
1356                 else
1357                         pipe_irq_disable(r8a66597, 0);
1358                 check_next_phase(r8a66597, 0);
1359         }
1360
1361         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1362                 check = 1 << pipenum;
1363                 if (mask & check) {
1364                         td = r8a66597_get_td(r8a66597, pipenum);
1365                         if (unlikely(!td))
1366                                 continue;
1367
1368                         if (td->type == USB_PID_IN)
1369                                 packet_read(r8a66597, pipenum);
1370                         else if (td->type == USB_PID_OUT)
1371                                 packet_write(r8a66597, pipenum);
1372                 }
1373         }
1374 }
1375
1376 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1377 {
1378         u16 tmp;
1379         u16 check;
1380         u16 pipenum;
1381         u16 mask;
1382         struct r8a66597_td *td;
1383
1384         mask = r8a66597_read(r8a66597, BEMPSTS)
1385                & r8a66597_read(r8a66597, BEMPENB);
1386         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1387         if (mask & BEMP0) {
1388                 cfifo_change(r8a66597, 0);
1389                 td = r8a66597_get_td(r8a66597, 0);
1390                 if (td && td->type != USB_PID_OUT)
1391                         disable_irq_empty(r8a66597, 0);
1392                 check_next_phase(r8a66597, 0);
1393         }
1394
1395         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1396                 check = 1 << pipenum;
1397                 if (mask &  check) {
1398                         struct r8a66597_td *td;
1399                         td = r8a66597_get_td(r8a66597, pipenum);
1400                         if (unlikely(!td))
1401                                 continue;
1402
1403                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1404                         if ((tmp & INBUFM) == 0) {
1405                                 disable_irq_empty(r8a66597, pipenum);
1406                                 pipe_irq_disable(r8a66597, pipenum);
1407                                 finish_request(r8a66597, td, pipenum, td->urb,
1408                                                 0);
1409                         }
1410                 }
1411         }
1412 }
1413
1414 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1415 {
1416         u16 check;
1417         u16 pipenum;
1418         u16 mask;
1419         int status;
1420
1421         mask = r8a66597_read(r8a66597, NRDYSTS)
1422                & r8a66597_read(r8a66597, NRDYENB);
1423         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1424         if (mask & NRDY0) {
1425                 cfifo_change(r8a66597, 0);
1426                 status = get_urb_error(r8a66597, 0);
1427                 pipe_irq_disable(r8a66597, 0);
1428                 check_next_phase(r8a66597, status);
1429         }
1430
1431         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1432                 check = 1 << pipenum;
1433                 if (mask & check) {
1434                         struct r8a66597_td *td;
1435                         td = r8a66597_get_td(r8a66597, pipenum);
1436                         if (unlikely(!td))
1437                                 continue;
1438
1439                         status = get_urb_error(r8a66597, pipenum);
1440                         pipe_irq_disable(r8a66597, pipenum);
1441                         pipe_stop(r8a66597, td->pipe);
1442                         finish_request(r8a66597, td, pipenum, td->urb, status);
1443                 }
1444         }
1445 }
1446
1447 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1448 {
1449         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1450
1451         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1452         rh->scount = R8A66597_MAX_SAMPLING;
1453         mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
1454 }
1455
1456 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1457 {
1458         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1459         u16 intsts0, intsts1, intsts2;
1460         u16 intenb0, intenb1, intenb2;
1461         u16 mask0, mask1, mask2;
1462         int status;
1463
1464         spin_lock(&r8a66597->lock);
1465
1466         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1467         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1468         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1469         intenb0 = r8a66597_read(r8a66597, INTENB0);
1470         intenb1 = r8a66597_read(r8a66597, INTENB1);
1471         intenb2 = r8a66597_read(r8a66597, INTENB2);
1472
1473         mask2 = intsts2 & intenb2;
1474         mask1 = intsts1 & intenb1;
1475         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1476         if (mask2) {
1477                 if (mask2 & ATTCH) {
1478                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1479                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1480
1481                         /* start usb bus sampling */
1482                         start_root_hub_sampling(r8a66597, 1);
1483                 }
1484                 if (mask2 & DTCH) {
1485                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1486                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1487                         r8a66597_usb_disconnect(r8a66597, 1);
1488                 }
1489         }
1490
1491         if (mask1) {
1492                 if (mask1 & ATTCH) {
1493                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1494                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1495
1496                         /* start usb bus sampling */
1497                         start_root_hub_sampling(r8a66597, 0);
1498                 }
1499                 if (mask1 & DTCH) {
1500                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1501                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1502                         r8a66597_usb_disconnect(r8a66597, 0);
1503                 }
1504                 if (mask1 & SIGN) {
1505                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1506                         status = get_urb_error(r8a66597, 0);
1507                         check_next_phase(r8a66597, status);
1508                 }
1509                 if (mask1 & SACK) {
1510                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1511                         check_next_phase(r8a66597, 0);
1512                 }
1513         }
1514         if (mask0) {
1515                 if (mask0 & BRDY)
1516                         irq_pipe_ready(r8a66597);
1517                 if (mask0 & BEMP)
1518                         irq_pipe_empty(r8a66597);
1519                 if (mask0 & NRDY)
1520                         irq_pipe_nrdy(r8a66597);
1521         }
1522
1523         spin_unlock(&r8a66597->lock);
1524         return IRQ_HANDLED;
1525 }
1526
1527 /* this function must be called with interrupt disabled */
1528 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1529 {
1530         u16 tmp;
1531         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1532
1533         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1534                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1535
1536                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1537                 if ((tmp & USBRST) == USBRST) {
1538                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1539                                       dvstctr_reg);
1540                         mod_timer(&r8a66597->rh_timer,
1541                                   jiffies + msecs_to_jiffies(50));
1542                 } else
1543                         r8a66597_usb_connect(r8a66597, port);
1544         }
1545
1546         if (rh->scount > 0) {
1547                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1548                 if (tmp == rh->old_syssts) {
1549                         rh->scount--;
1550                         if (rh->scount == 0) {
1551                                 if (tmp == FS_JSTS) {
1552                                         r8a66597_bset(r8a66597, HSE,
1553                                                       get_syscfg_reg(port));
1554                                         r8a66597_usb_preconnect(r8a66597, port);
1555                                 } else if (tmp == LS_JSTS) {
1556                                         r8a66597_bclr(r8a66597, HSE,
1557                                                       get_syscfg_reg(port));
1558                                         r8a66597_usb_preconnect(r8a66597, port);
1559                                 } else if (tmp == SE0)
1560                                         r8a66597_bset(r8a66597, ATTCHE,
1561                                                       get_intenb_reg(port));
1562                         } else {
1563                                 mod_timer(&r8a66597->rh_timer,
1564                                           jiffies + msecs_to_jiffies(50));
1565                         }
1566                 } else {
1567                         rh->scount = R8A66597_MAX_SAMPLING;
1568                         rh->old_syssts = tmp;
1569                         mod_timer(&r8a66597->rh_timer,
1570                                   jiffies + msecs_to_jiffies(50));
1571                 }
1572         }
1573 }
1574
1575 static void r8a66597_td_timer(unsigned long _r8a66597)
1576 {
1577         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1578         unsigned long flags;
1579         u16 pipenum;
1580         struct r8a66597_td *td, *new_td = NULL;
1581         struct r8a66597_pipe *pipe;
1582
1583         spin_lock_irqsave(&r8a66597->lock, flags);
1584         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1585                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1586                         continue;
1587                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1588                         continue;
1589
1590                 td = r8a66597_get_td(r8a66597, pipenum);
1591                 if (!td) {
1592                         r8a66597->timeout_map &= ~(1 << pipenum);
1593                         continue;
1594                 }
1595
1596                 if (td->urb->actual_length) {
1597                         set_td_timer(r8a66597, td);
1598                         break;
1599                 }
1600
1601                 pipe = td->pipe;
1602                 pipe_stop(r8a66597, pipe);
1603
1604                 new_td = td;
1605                 do {
1606                         list_move_tail(&new_td->queue,
1607                                        &r8a66597->pipe_queue[pipenum]);
1608                         new_td = r8a66597_get_td(r8a66597, pipenum);
1609                         if (!new_td) {
1610                                 new_td = td;
1611                                 break;
1612                         }
1613                 } while (td != new_td && td->address == new_td->address);
1614
1615                 start_transfer(r8a66597, new_td);
1616
1617                 if (td == new_td)
1618                         r8a66597->timeout_map &= ~(1 << pipenum);
1619                 else
1620                         set_td_timer(r8a66597, new_td);
1621                 break;
1622         }
1623         spin_unlock_irqrestore(&r8a66597->lock, flags);
1624 }
1625
1626 static void r8a66597_timer(unsigned long _r8a66597)
1627 {
1628         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1629         unsigned long flags;
1630
1631         spin_lock_irqsave(&r8a66597->lock, flags);
1632
1633         r8a66597_root_hub_control(r8a66597, 0);
1634         r8a66597_root_hub_control(r8a66597, 1);
1635
1636         spin_unlock_irqrestore(&r8a66597->lock, flags);
1637 }
1638
1639 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1640 {
1641         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1642
1643         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1644             (urb->dev->state == USB_STATE_CONFIGURED))
1645                 return 1;
1646         else
1647                 return 0;
1648 }
1649
1650 static int r8a66597_start(struct usb_hcd *hcd)
1651 {
1652         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1653
1654         hcd->state = HC_STATE_RUNNING;
1655         return enable_controller(r8a66597);
1656 }
1657
1658 static void r8a66597_stop(struct usb_hcd *hcd)
1659 {
1660         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1661
1662         disable_controller(r8a66597);
1663 }
1664
1665 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1666 {
1667         unsigned int usb_address = usb_pipedevice(urb->pipe);
1668         u16 root_port, hub_port;
1669
1670         if (usb_address == 0) {
1671                 get_port_number(urb->dev->devpath,
1672                                 &root_port, &hub_port);
1673                 set_devadd_reg(r8a66597, 0,
1674                                get_r8a66597_usb_speed(urb->dev->speed),
1675                                get_parent_r8a66597_address(r8a66597, urb->dev),
1676                                hub_port, root_port);
1677         }
1678 }
1679
1680 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1681                                             struct urb *urb,
1682                                             struct usb_host_endpoint *hep)
1683 {
1684         struct r8a66597_td *td;
1685         u16 pipenum;
1686
1687         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1688         if (td == NULL)
1689                 return NULL;
1690
1691         pipenum = r8a66597_get_pipenum(urb, hep);
1692         td->pipenum = pipenum;
1693         td->pipe = hep->hcpriv;
1694         td->urb = urb;
1695         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1696         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1697                                       !usb_pipein(urb->pipe));
1698         if (usb_pipecontrol(urb->pipe))
1699                 td->type = USB_PID_SETUP;
1700         else if (usb_pipein(urb->pipe))
1701                 td->type = USB_PID_IN;
1702         else
1703                 td->type = USB_PID_OUT;
1704         INIT_LIST_HEAD(&td->queue);
1705
1706         return td;
1707 }
1708
1709 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1710                                 struct urb *urb,
1711                                 gfp_t mem_flags)
1712 {
1713         struct usb_host_endpoint *hep = urb->ep;
1714         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1715         struct r8a66597_td *td = NULL;
1716         int ret, request = 0;
1717         unsigned long flags;
1718
1719         spin_lock_irqsave(&r8a66597->lock, flags);
1720         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1721                 ret = -ENODEV;
1722                 goto error_not_linked;
1723         }
1724
1725         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1726         if (ret)
1727                 goto error_not_linked;
1728
1729         if (!hep->hcpriv) {
1730                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1731                                 GFP_ATOMIC);
1732                 if (!hep->hcpriv) {
1733                         ret = -ENOMEM;
1734                         goto error;
1735                 }
1736                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1737                 if (usb_pipeendpoint(urb->pipe))
1738                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1739         }
1740
1741         if (unlikely(check_pipe_config(r8a66597, urb)))
1742                 init_pipe_config(r8a66597, urb);
1743
1744         set_address_zero(r8a66597, urb);
1745         td = r8a66597_make_td(r8a66597, urb, hep);
1746         if (td == NULL) {
1747                 ret = -ENOMEM;
1748                 goto error;
1749         }
1750         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1751                 request = 1;
1752         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1753         urb->hcpriv = td;
1754
1755         if (request) {
1756                 ret = start_transfer(r8a66597, td);
1757                 if (ret < 0) {
1758                         list_del(&td->queue);
1759                         kfree(td);
1760                 }
1761         } else
1762                 set_td_timer(r8a66597, td);
1763
1764 error:
1765         if (ret)
1766                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1767 error_not_linked:
1768         spin_unlock_irqrestore(&r8a66597->lock, flags);
1769         return ret;
1770 }
1771
1772 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1773                 int status)
1774 {
1775         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1776         struct r8a66597_td *td;
1777         unsigned long flags;
1778         int rc;
1779
1780         spin_lock_irqsave(&r8a66597->lock, flags);
1781         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1782         if (rc)
1783                 goto done;
1784
1785         if (urb->hcpriv) {
1786                 td = urb->hcpriv;
1787                 pipe_stop(r8a66597, td->pipe);
1788                 pipe_irq_disable(r8a66597, td->pipenum);
1789                 disable_irq_empty(r8a66597, td->pipenum);
1790                 finish_request(r8a66597, td, td->pipenum, urb, status);
1791         }
1792  done:
1793         spin_unlock_irqrestore(&r8a66597->lock, flags);
1794         return rc;
1795 }
1796
1797 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1798                                       struct usb_host_endpoint *hep)
1799 {
1800         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1801         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1802         struct r8a66597_td *td;
1803         struct urb *urb = NULL;
1804         u16 pipenum;
1805         unsigned long flags;
1806
1807         if (pipe == NULL)
1808                 return;
1809         pipenum = pipe->info.pipenum;
1810
1811         if (pipenum == 0) {
1812                 kfree(hep->hcpriv);
1813                 hep->hcpriv = NULL;
1814                 return;
1815         }
1816
1817         spin_lock_irqsave(&r8a66597->lock, flags);
1818         pipe_stop(r8a66597, pipe);
1819         pipe_irq_disable(r8a66597, pipenum);
1820         disable_irq_empty(r8a66597, pipenum);
1821         td = r8a66597_get_td(r8a66597, pipenum);
1822         if (td)
1823                 urb = td->urb;
1824         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1825         kfree(hep->hcpriv);
1826         hep->hcpriv = NULL;
1827         spin_unlock_irqrestore(&r8a66597->lock, flags);
1828 }
1829
1830 static int r8a66597_get_frame(struct usb_hcd *hcd)
1831 {
1832         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1833         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1834 }
1835
1836 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1837 {
1838         int chix;
1839
1840         if (udev->state == USB_STATE_CONFIGURED &&
1841             udev->parent && udev->parent->devnum > 1 &&
1842             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1843                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1844
1845         for (chix = 0; chix < udev->maxchild; chix++) {
1846                 struct usb_device *childdev = udev->children[chix];
1847
1848                 if (childdev)
1849                         collect_usb_address_map(childdev, map);
1850         }
1851 }
1852
1853 /* this function must be called with interrupt disabled */
1854 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1855                                                    int addr)
1856 {
1857         struct r8a66597_device *dev;
1858         struct list_head *list = &r8a66597->child_device;
1859
1860         list_for_each_entry(dev, list, device_list) {
1861                 if (!dev)
1862                         continue;
1863                 if (dev->usb_address != addr)
1864                         continue;
1865
1866                 return dev;
1867         }
1868
1869         err("get_r8a66597_device fail.(%d)\n", addr);
1870         return NULL;
1871 }
1872
1873 static void update_usb_address_map(struct r8a66597 *r8a66597,
1874                                    struct usb_device *root_hub,
1875                                    unsigned long *map)
1876 {
1877         int i, j, addr;
1878         unsigned long diff;
1879         unsigned long flags;
1880
1881         for (i = 0; i < 4; i++) {
1882                 diff = r8a66597->child_connect_map[i] ^ map[i];
1883                 if (!diff)
1884                         continue;
1885
1886                 for (j = 0; j < 32; j++) {
1887                         if (!(diff & (1 << j)))
1888                                 continue;
1889
1890                         addr = i * 32 + j;
1891                         if (map[i] & (1 << j))
1892                                 set_child_connect_map(r8a66597, addr);
1893                         else {
1894                                 struct r8a66597_device *dev;
1895
1896                                 spin_lock_irqsave(&r8a66597->lock, flags);
1897                                 dev = get_r8a66597_device(r8a66597, addr);
1898                                 disable_r8a66597_pipe_all(r8a66597, dev);
1899                                 free_usb_address(r8a66597, dev);
1900                                 put_child_connect_map(r8a66597, addr);
1901                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
1902                         }
1903                 }
1904         }
1905 }
1906
1907 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
1908                                         struct usb_hcd *hcd)
1909 {
1910         struct usb_bus *bus;
1911         unsigned long now_map[4];
1912
1913         memset(now_map, 0, sizeof(now_map));
1914
1915         list_for_each_entry(bus, &usb_bus_list, bus_list) {
1916                 if (!bus->root_hub)
1917                         continue;
1918
1919                 if (bus->busnum != hcd->self.busnum)
1920                         continue;
1921
1922                 collect_usb_address_map(bus->root_hub, now_map);
1923                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
1924         }
1925 }
1926
1927 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
1928 {
1929         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1930         unsigned long flags;
1931         int i;
1932
1933         r8a66597_check_detect_child(r8a66597, hcd);
1934
1935         spin_lock_irqsave(&r8a66597->lock, flags);
1936
1937         *buf = 0;       /* initialize (no change) */
1938
1939         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
1940                 if (r8a66597->root_hub[i].port & 0xffff0000)
1941                         *buf |= 1 << (i + 1);
1942         }
1943
1944         spin_unlock_irqrestore(&r8a66597->lock, flags);
1945
1946         return (*buf != 0);
1947 }
1948
1949 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
1950                                     struct usb_hub_descriptor *desc)
1951 {
1952         desc->bDescriptorType = 0x29;
1953         desc->bHubContrCurrent = 0;
1954         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
1955         desc->bDescLength = 9;
1956         desc->bPwrOn2PwrGood = 0;
1957         desc->wHubCharacteristics = cpu_to_le16(0x0011);
1958         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
1959         desc->bitmap[1] = ~0;
1960 }
1961
1962 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1963                                 u16 wIndex, char *buf, u16 wLength)
1964 {
1965         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1966         int ret;
1967         int port = (wIndex & 0x00FF) - 1;
1968         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1969         unsigned long flags;
1970
1971         ret = 0;
1972
1973         spin_lock_irqsave(&r8a66597->lock, flags);
1974         switch (typeReq) {
1975         case ClearHubFeature:
1976         case SetHubFeature:
1977                 switch (wValue) {
1978                 case C_HUB_OVER_CURRENT:
1979                 case C_HUB_LOCAL_POWER:
1980                         break;
1981                 default:
1982                         goto error;
1983                 }
1984                 break;
1985         case ClearPortFeature:
1986                 if (wIndex > R8A66597_MAX_ROOT_HUB)
1987                         goto error;
1988                 if (wLength != 0)
1989                         goto error;
1990
1991                 switch (wValue) {
1992                 case USB_PORT_FEAT_ENABLE:
1993                         rh->port &= (1 << USB_PORT_FEAT_POWER);
1994                         break;
1995                 case USB_PORT_FEAT_SUSPEND:
1996                         break;
1997                 case USB_PORT_FEAT_POWER:
1998                         r8a66597_port_power(r8a66597, port, 0);
1999                         break;
2000                 case USB_PORT_FEAT_C_ENABLE:
2001                 case USB_PORT_FEAT_C_SUSPEND:
2002                 case USB_PORT_FEAT_C_CONNECTION:
2003                 case USB_PORT_FEAT_C_OVER_CURRENT:
2004                 case USB_PORT_FEAT_C_RESET:
2005                         break;
2006                 default:
2007                         goto error;
2008                 }
2009                 rh->port &= ~(1 << wValue);
2010                 break;
2011         case GetHubDescriptor:
2012                 r8a66597_hub_descriptor(r8a66597,
2013                                         (struct usb_hub_descriptor *)buf);
2014                 break;
2015         case GetHubStatus:
2016                 *buf = 0x00;
2017                 break;
2018         case GetPortStatus:
2019                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2020                         goto error;
2021                 *(u32 *)buf = rh->port;
2022                 break;
2023         case SetPortFeature:
2024                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2025                         goto error;
2026                 if (wLength != 0)
2027                         goto error;
2028
2029                 switch (wValue) {
2030                 case USB_PORT_FEAT_SUSPEND:
2031                         break;
2032                 case USB_PORT_FEAT_POWER:
2033                         r8a66597_port_power(r8a66597, port, 1);
2034                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2035                         break;
2036                 case USB_PORT_FEAT_RESET: {
2037                         struct r8a66597_device *dev = rh->dev;
2038
2039                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2040
2041                         disable_r8a66597_pipe_all(r8a66597, dev);
2042                         free_usb_address(r8a66597, dev);
2043
2044                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2045                                       get_dvstctr_reg(port));
2046                         mod_timer(&r8a66597->rh_timer,
2047                                   jiffies + msecs_to_jiffies(50));
2048                         }
2049                         break;
2050                 default:
2051                         goto error;
2052                 }
2053                 rh->port |= 1 << wValue;
2054                 break;
2055         default:
2056 error:
2057                 ret = -EPIPE;
2058                 break;
2059         }
2060
2061         spin_unlock_irqrestore(&r8a66597->lock, flags);
2062         return ret;
2063 }
2064
2065 static struct hc_driver r8a66597_hc_driver = {
2066         .description =          hcd_name,
2067         .hcd_priv_size =        sizeof(struct r8a66597),
2068         .irq =                  r8a66597_irq,
2069
2070         /*
2071          * generic hardware linkage
2072          */
2073         .flags =                HCD_USB2,
2074
2075         .start =                r8a66597_start,
2076         .stop =                 r8a66597_stop,
2077
2078         /*
2079          * managing i/o requests and associated device resources
2080          */
2081         .urb_enqueue =          r8a66597_urb_enqueue,
2082         .urb_dequeue =          r8a66597_urb_dequeue,
2083         .endpoint_disable =     r8a66597_endpoint_disable,
2084
2085         /*
2086          * periodic schedule support
2087          */
2088         .get_frame_number =     r8a66597_get_frame,
2089
2090         /*
2091          * root hub support
2092          */
2093         .hub_status_data =      r8a66597_hub_status_data,
2094         .hub_control =          r8a66597_hub_control,
2095 };
2096
2097 #if defined(CONFIG_PM)
2098 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2099 {
2100         pdev->dev.power.power_state = state;
2101         return 0;
2102 }
2103
2104 static int r8a66597_resume(struct platform_device *pdev)
2105 {
2106         pdev->dev.power.power_state = PMSG_ON;
2107         return 0;
2108 }
2109 #else   /* if defined(CONFIG_PM) */
2110 #define r8a66597_suspend        NULL
2111 #define r8a66597_resume         NULL
2112 #endif
2113
2114 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2115 {
2116         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2117         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2118
2119         del_timer_sync(&r8a66597->rh_timer);
2120         iounmap((void *)r8a66597->reg);
2121         usb_remove_hcd(hcd);
2122         usb_put_hcd(hcd);
2123         return 0;
2124 }
2125
2126 #define resource_len(r) (((r)->end - (r)->start) + 1)
2127 static int __init r8a66597_probe(struct platform_device *pdev)
2128 {
2129         struct resource *res = NULL;
2130         int irq = -1;
2131         void __iomem *reg = NULL;
2132         struct usb_hcd *hcd = NULL;
2133         struct r8a66597 *r8a66597;
2134         int ret = 0;
2135         int i;
2136
2137         if (pdev->dev.dma_mask) {
2138                 ret = -EINVAL;
2139                 err("dma not support");
2140                 goto clean_up;
2141         }
2142
2143         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2144                                            (char *)hcd_name);
2145         if (!res) {
2146                 ret = -ENODEV;
2147                 err("platform_get_resource_byname error.");
2148                 goto clean_up;
2149         }
2150
2151         irq = platform_get_irq(pdev, 0);
2152         if (irq < 0) {
2153                 ret = -ENODEV;
2154                 err("platform_get_irq error.");
2155                 goto clean_up;
2156         }
2157
2158         reg = ioremap(res->start, resource_len(res));
2159         if (reg == NULL) {
2160                 ret = -ENOMEM;
2161                 err("ioremap error.");
2162                 goto clean_up;
2163         }
2164
2165         /* initialize hcd */
2166         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2167         if (!hcd) {
2168                 ret = -ENOMEM;
2169                 err("Failed to create hcd");
2170                 goto clean_up;
2171         }
2172         r8a66597 = hcd_to_r8a66597(hcd);
2173         memset(r8a66597, 0, sizeof(struct r8a66597));
2174         dev_set_drvdata(&pdev->dev, r8a66597);
2175
2176         spin_lock_init(&r8a66597->lock);
2177         init_timer(&r8a66597->rh_timer);
2178         r8a66597->rh_timer.function = r8a66597_timer;
2179         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2180         r8a66597->reg = (unsigned long)reg;
2181
2182         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2183                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2184                 init_timer(&r8a66597->td_timer[i]);
2185                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2186                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2187         }
2188         INIT_LIST_HEAD(&r8a66597->child_device);
2189
2190         hcd->rsrc_start = res->start;
2191         ret = usb_add_hcd(hcd, irq, 0);
2192         if (ret != 0) {
2193                 err("Failed to add hcd");
2194                 goto clean_up;
2195         }
2196
2197         return 0;
2198
2199 clean_up:
2200         if (reg)
2201                 iounmap(reg);
2202
2203         return ret;
2204 }
2205
2206 static struct platform_driver r8a66597_driver = {
2207         .probe =        r8a66597_probe,
2208         .remove =       r8a66597_remove,
2209         .suspend =      r8a66597_suspend,
2210         .resume =       r8a66597_resume,
2211         .driver         = {
2212                 .name = (char *) hcd_name,
2213         },
2214 };
2215
2216 static int __init r8a66597_init(void)
2217 {
2218         if (usb_disabled())
2219                 return -ENODEV;
2220
2221         info("driver %s, %s", hcd_name, DRIVER_VERSION);
2222         return platform_driver_register(&r8a66597_driver);
2223 }
2224 module_init(r8a66597_init);
2225
2226 static void __exit r8a66597_cleanup(void)
2227 {
2228         platform_driver_unregister(&r8a66597_driver);
2229 }
2230 module_exit(r8a66597_cleanup);
2231