Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
[linux-2.6] / 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 MODULE_ALIAS("platform:r8a66597_hcd");
48
49 #define DRIVER_VERSION  "10 Apr 2008"
50
51 static const char hcd_name[] = "r8a66597_hcd";
52
53 /* module parameters */
54 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
55 static unsigned short clock = XTAL12;
56 module_param(clock, ushort, 0644);
57 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
58                 "(default=0)");
59 #endif
60
61 static unsigned short vif = LDRV;
62 module_param(vif, ushort, 0644);
63 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
64
65 static unsigned short endian;
66 module_param(endian, ushort, 0644);
67 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
68
69 static unsigned short irq_sense = 0xff;
70 module_param(irq_sense, ushort, 0644);
71 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
72                 "(default=32)");
73
74 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
75 static int r8a66597_get_frame(struct usb_hcd *hcd);
76
77 /* this function must be called with interrupt disabled */
78 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
79                             unsigned long reg)
80 {
81         u16 tmp;
82
83         tmp = r8a66597_read(r8a66597, INTENB0);
84         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
85         r8a66597_bset(r8a66597, 1 << pipenum, reg);
86         r8a66597_write(r8a66597, tmp, INTENB0);
87 }
88
89 /* this function must be called with interrupt disabled */
90 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
91                              unsigned long reg)
92 {
93         u16 tmp;
94
95         tmp = r8a66597_read(r8a66597, INTENB0);
96         r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
97         r8a66597_bclr(r8a66597, 1 << pipenum, reg);
98         r8a66597_write(r8a66597, tmp, INTENB0);
99 }
100
101 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
102                            u16 usbspd, u8 upphub, u8 hubport, int port)
103 {
104         u16 val;
105         unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
106
107         val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
108         r8a66597_write(r8a66597, val, devadd_reg);
109 }
110
111 static int r8a66597_clock_enable(struct r8a66597 *r8a66597)
112 {
113         u16 tmp;
114         int i = 0;
115
116 #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
117         do {
118                 r8a66597_write(r8a66597, SCKE, SYSCFG0);
119                 tmp = r8a66597_read(r8a66597, SYSCFG0);
120                 if (i++ > 1000) {
121                         printk(KERN_ERR "r8a66597: register access fail.\n");
122                         return -ENXIO;
123                 }
124         } while ((tmp & SCKE) != SCKE);
125         r8a66597_write(r8a66597, 0x04, 0x02);
126 #else
127         do {
128                 r8a66597_write(r8a66597, USBE, SYSCFG0);
129                 tmp = r8a66597_read(r8a66597, SYSCFG0);
130                 if (i++ > 1000) {
131                         printk(KERN_ERR "r8a66597: register access fail.\n");
132                         return -ENXIO;
133                 }
134         } while ((tmp & USBE) != USBE);
135         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
136         r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
137
138         i = 0;
139         r8a66597_bset(r8a66597, XCKE, SYSCFG0);
140         do {
141                 msleep(1);
142                 tmp = r8a66597_read(r8a66597, SYSCFG0);
143                 if (i++ > 500) {
144                         printk(KERN_ERR "r8a66597: register access fail.\n");
145                         return -ENXIO;
146                 }
147         } while ((tmp & SCKE) != SCKE);
148 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
149
150         return 0;
151 }
152
153 static void r8a66597_clock_disable(struct r8a66597 *r8a66597)
154 {
155         r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
156         udelay(1);
157 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
158         r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
159         r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
160         r8a66597_bclr(r8a66597, USBE, SYSCFG0);
161 #endif
162 }
163
164 static void r8a66597_enable_port(struct r8a66597 *r8a66597, int port)
165 {
166         u16 val;
167
168         val = port ? DRPD : DCFM | DRPD;
169         r8a66597_bset(r8a66597, val, get_syscfg_reg(port));
170         r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
171
172         r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, get_dmacfg_reg(port));
173         r8a66597_bclr(r8a66597, DTCHE, get_intenb_reg(port));
174         r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
175 }
176
177 static void r8a66597_disable_port(struct r8a66597 *r8a66597, int port)
178 {
179         u16 val, tmp;
180
181         r8a66597_write(r8a66597, 0, get_intenb_reg(port));
182         r8a66597_write(r8a66597, 0, get_intsts_reg(port));
183
184         r8a66597_port_power(r8a66597, port, 0);
185
186         do {
187                 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
188                 udelay(640);
189         } while (tmp == EDGESTS);
190
191         val = port ? DRPD : DCFM | DRPD;
192         r8a66597_bclr(r8a66597, val, get_syscfg_reg(port));
193         r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
194 }
195
196 static int enable_controller(struct r8a66597 *r8a66597)
197 {
198         int ret, port;
199
200         ret = r8a66597_clock_enable(r8a66597);
201         if (ret < 0)
202                 return ret;
203
204         r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
205         r8a66597_bset(r8a66597, USBE, SYSCFG0);
206
207         r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
208         r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
209         r8a66597_bset(r8a66597, BRDY0, BRDYENB);
210         r8a66597_bset(r8a66597, BEMP0, BEMPENB);
211
212         r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
213         r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
214         r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
215         r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
216
217         r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
218
219         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
220                 r8a66597_enable_port(r8a66597, port);
221
222         return 0;
223 }
224
225 static void disable_controller(struct r8a66597 *r8a66597)
226 {
227         int port;
228
229         r8a66597_write(r8a66597, 0, INTENB0);
230         r8a66597_write(r8a66597, 0, INTSTS0);
231
232         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++)
233                 r8a66597_disable_port(r8a66597, port);
234
235         r8a66597_clock_disable(r8a66597);
236 }
237
238 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
239                                        struct usb_device *udev)
240 {
241         struct r8a66597_device *dev;
242
243         if (udev->parent && udev->parent->devnum != 1)
244                 udev = udev->parent;
245
246         dev = dev_get_drvdata(&udev->dev);
247         if (dev)
248                 return dev->address;
249         else
250                 return 0;
251 }
252
253 static int is_child_device(char *devpath)
254 {
255         return (devpath[2] ? 1 : 0);
256 }
257
258 static int is_hub_limit(char *devpath)
259 {
260         return ((strlen(devpath) >= 4) ? 1 : 0);
261 }
262
263 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
264 {
265         if (root_port) {
266                 *root_port = (devpath[0] & 0x0F) - 1;
267                 if (*root_port >= R8A66597_MAX_ROOT_HUB)
268                         printk(KERN_ERR "r8a66597: Illegal root port number.\n");
269         }
270         if (hub_port)
271                 *hub_port = devpath[2] & 0x0F;
272 }
273
274 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
275 {
276         u16 usbspd = 0;
277
278         switch (speed) {
279         case USB_SPEED_LOW:
280                 usbspd = LSMODE;
281                 break;
282         case USB_SPEED_FULL:
283                 usbspd = FSMODE;
284                 break;
285         case USB_SPEED_HIGH:
286                 usbspd = HSMODE;
287                 break;
288         default:
289                 printk(KERN_ERR "r8a66597: unknown speed\n");
290                 break;
291         }
292
293         return usbspd;
294 }
295
296 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
297 {
298         int idx;
299
300         idx = address / 32;
301         r8a66597->child_connect_map[idx] |= 1 << (address % 32);
302 }
303
304 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
305 {
306         int idx;
307
308         idx = address / 32;
309         r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
310 }
311
312 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
313 {
314         u16 pipenum = pipe->info.pipenum;
315         const unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
316         const unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
317         const unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
318
319         if (dma_ch > R8A66597_PIPE_NO_DMA)      /* dma fifo not use? */
320                 dma_ch = R8A66597_PIPE_NO_DMA;
321
322         pipe->fifoaddr = fifoaddr[dma_ch];
323         pipe->fifosel = fifosel[dma_ch];
324         pipe->fifoctr = fifoctr[dma_ch];
325
326         if (pipenum == 0)
327                 pipe->pipectr = DCPCTR;
328         else
329                 pipe->pipectr = get_pipectr_addr(pipenum);
330
331         if (check_bulk_or_isoc(pipenum)) {
332                 pipe->pipetre = get_pipetre_addr(pipenum);
333                 pipe->pipetrn = get_pipetrn_addr(pipenum);
334         } else {
335                 pipe->pipetre = 0;
336                 pipe->pipetrn = 0;
337         }
338 }
339
340 static struct r8a66597_device *
341 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
342 {
343         if (usb_pipedevice(urb->pipe) == 0)
344                 return &r8a66597->device0;
345
346         return dev_get_drvdata(&urb->dev->dev);
347 }
348
349 static int make_r8a66597_device(struct r8a66597 *r8a66597,
350                                 struct urb *urb, u8 addr)
351 {
352         struct r8a66597_device *dev;
353         int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
354
355         dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
356         if (dev == NULL)
357                 return -ENOMEM;
358
359         dev_set_drvdata(&urb->dev->dev, dev);
360         dev->udev = urb->dev;
361         dev->address = addr;
362         dev->usb_address = usb_address;
363         dev->state = USB_STATE_ADDRESS;
364         dev->ep_in_toggle = 0;
365         dev->ep_out_toggle = 0;
366         INIT_LIST_HEAD(&dev->device_list);
367         list_add_tail(&dev->device_list, &r8a66597->child_device);
368
369         get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
370         if (!is_child_device(urb->dev->devpath))
371                 r8a66597->root_hub[dev->root_port].dev = dev;
372
373         set_devadd_reg(r8a66597, dev->address,
374                        get_r8a66597_usb_speed(urb->dev->speed),
375                        get_parent_r8a66597_address(r8a66597, urb->dev),
376                        dev->hub_port, dev->root_port);
377
378         return 0;
379 }
380
381 /* this function must be called with interrupt disabled */
382 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
383 {
384         u8 addr;        /* R8A66597's address */
385         struct r8a66597_device *dev;
386
387         if (is_hub_limit(urb->dev->devpath)) {
388                 dev_err(&urb->dev->dev, "External hub limit reached.\n");
389                 return 0;
390         }
391
392         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
393         if (dev && dev->state >= USB_STATE_ADDRESS)
394                 return dev->address;
395
396         for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
397                 if (r8a66597->address_map & (1 << addr))
398                         continue;
399
400                 dbg("alloc_address: r8a66597_addr=%d", addr);
401                 r8a66597->address_map |= 1 << addr;
402
403                 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
404                         return 0;
405
406                 return addr;
407         }
408
409         dev_err(&urb->dev->dev,
410                 "cannot communicate with a USB device more than 10.(%x)\n",
411                 r8a66597->address_map);
412
413         return 0;
414 }
415
416 /* this function must be called with interrupt disabled */
417 static void free_usb_address(struct r8a66597 *r8a66597,
418                              struct r8a66597_device *dev)
419 {
420         int port;
421
422         if (!dev)
423                 return;
424
425         dbg("free_addr: addr=%d", dev->address);
426
427         dev->state = USB_STATE_DEFAULT;
428         r8a66597->address_map &= ~(1 << dev->address);
429         dev->address = 0;
430         dev_set_drvdata(&dev->udev->dev, NULL);
431         list_del(&dev->device_list);
432         kfree(dev);
433
434         for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
435                 if (r8a66597->root_hub[port].dev == dev) {
436                         r8a66597->root_hub[port].dev = NULL;
437                         break;
438                 }
439         }
440 }
441
442 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
443                               u16 mask, u16 loop)
444 {
445         u16 tmp;
446         int i = 0;
447
448         do {
449                 tmp = r8a66597_read(r8a66597, reg);
450                 if (i++ > 1000000) {
451                         printk(KERN_ERR "r8a66597: register%lx, loop %x "
452                                "is timeout\n", reg, loop);
453                         break;
454                 }
455                 ndelay(1);
456         } while ((tmp & mask) != loop);
457 }
458
459 /* this function must be called with interrupt disabled */
460 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
461 {
462         u16 tmp;
463
464         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
465         if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
466                 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
467         r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
468 }
469
470 /* this function must be called with interrupt disabled */
471 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
472 {
473         u16 tmp;
474
475         tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
476         if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
477                 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
478         r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
479         r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
480 }
481
482 /* this function must be called with interrupt disabled */
483 static void clear_all_buffer(struct r8a66597 *r8a66597,
484                              struct r8a66597_pipe *pipe)
485 {
486         u16 tmp;
487
488         if (!pipe || pipe->info.pipenum == 0)
489                 return;
490
491         pipe_stop(r8a66597, pipe);
492         r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
493         tmp = r8a66597_read(r8a66597, pipe->pipectr);
494         tmp = r8a66597_read(r8a66597, pipe->pipectr);
495         tmp = r8a66597_read(r8a66597, pipe->pipectr);
496         r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
497 }
498
499 /* this function must be called with interrupt disabled */
500 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
501                                  struct r8a66597_pipe *pipe, int toggle)
502 {
503         if (toggle)
504                 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
505         else
506                 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
507 }
508
509 /* this function must be called with interrupt disabled */
510 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
511 {
512         r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
513         r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
514 }
515
516 /* this function must be called with interrupt disabled */
517 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
518                                          struct r8a66597_pipe *pipe)
519 {
520         cfifo_change(r8a66597, 0);
521         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
522         r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
523
524         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
525                       pipe->fifosel);
526         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
527 }
528
529 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
530 {
531         struct r8a66597_pipe *pipe = hep->hcpriv;
532
533         if (usb_pipeendpoint(urb->pipe) == 0)
534                 return 0;
535         else
536                 return pipe->info.pipenum;
537 }
538
539 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
540 {
541         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
542
543         return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
544 }
545
546 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
547                                           int urb_pipe)
548 {
549         if (!dev)
550                 return NULL;
551
552         return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
553 }
554
555 /* this function must be called with interrupt disabled */
556 static void pipe_toggle_set(struct r8a66597 *r8a66597,
557                             struct r8a66597_pipe *pipe,
558                             struct urb *urb, int set)
559 {
560         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
561         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
562         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
563
564         if (!toggle)
565                 return;
566
567         if (set)
568                 *toggle |= 1 << endpoint;
569         else
570                 *toggle &= ~(1 << endpoint);
571 }
572
573 /* this function must be called with interrupt disabled */
574 static void pipe_toggle_save(struct r8a66597 *r8a66597,
575                              struct r8a66597_pipe *pipe,
576                              struct urb *urb)
577 {
578         if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
579                 pipe_toggle_set(r8a66597, pipe, urb, 1);
580         else
581                 pipe_toggle_set(r8a66597, pipe, urb, 0);
582 }
583
584 /* this function must be called with interrupt disabled */
585 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
586                                 struct r8a66597_pipe *pipe,
587                                 struct urb *urb)
588 {
589         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
590         unsigned char endpoint = usb_pipeendpoint(urb->pipe);
591         unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
592
593         if (!toggle)
594                 return;
595
596         r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
597 }
598
599 /* this function must be called with interrupt disabled */
600 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
601                                 struct r8a66597_pipe_info *info)
602 {
603         u16 val = 0;
604
605         if (info->pipenum == 0)
606                 return;
607
608         r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
609         r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
610         r8a66597_write(r8a66597, info->pipenum, PIPESEL);
611         if (!info->dir_in)
612                 val |= R8A66597_DIR;
613         if (info->type == R8A66597_BULK && info->dir_in)
614                 val |= R8A66597_DBLB | R8A66597_SHTNAK;
615         val |= info->type | info->epnum;
616         r8a66597_write(r8a66597, val, PIPECFG);
617
618         r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
619                        PIPEBUF);
620         r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
621                        PIPEMAXP);
622         r8a66597_write(r8a66597, info->interval, PIPEPERI);
623 }
624
625 /* this function must be called with interrupt disabled */
626 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
627 {
628         struct r8a66597_pipe_info *info;
629         struct urb *urb = td->urb;
630
631         if (td->pipenum > 0) {
632                 info = &td->pipe->info;
633                 cfifo_change(r8a66597, 0);
634                 pipe_buffer_setting(r8a66597, info);
635
636                 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
637                                    usb_pipeout(urb->pipe)) &&
638                     !usb_pipecontrol(urb->pipe)) {
639                         r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
640                         pipe_toggle_set(r8a66597, td->pipe, urb, 0);
641                         clear_all_buffer(r8a66597, td->pipe);
642                         usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
643                                       usb_pipeout(urb->pipe), 1);
644                 }
645                 pipe_toggle_restore(r8a66597, td->pipe, urb);
646         }
647 }
648
649 /* this function must be called with interrupt disabled */
650 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
651                              struct usb_endpoint_descriptor *ep)
652 {
653         u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
654
655         memset(array, 0, sizeof(array));
656         switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
657         case USB_ENDPOINT_XFER_BULK:
658                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
659                         array[i++] = 4;
660                 else {
661                         array[i++] = 3;
662                         array[i++] = 5;
663                 }
664                 break;
665         case USB_ENDPOINT_XFER_INT:
666                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
667                         array[i++] = 6;
668                         array[i++] = 7;
669                         array[i++] = 8;
670                 } else
671                         array[i++] = 9;
672                 break;
673         case USB_ENDPOINT_XFER_ISOC:
674                 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
675                         array[i++] = 2;
676                 else
677                         array[i++] = 1;
678                 break;
679         default:
680                 printk(KERN_ERR "r8a66597: Illegal type\n");
681                 return 0;
682         }
683
684         i = 1;
685         min = array[0];
686         while (array[i] != 0) {
687                 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
688                         min = array[i];
689                 i++;
690         }
691
692         return min;
693 }
694
695 static u16 get_r8a66597_type(__u8 type)
696 {
697         u16 r8a66597_type;
698
699         switch (type) {
700         case USB_ENDPOINT_XFER_BULK:
701                 r8a66597_type = R8A66597_BULK;
702                 break;
703         case USB_ENDPOINT_XFER_INT:
704                 r8a66597_type = R8A66597_INT;
705                 break;
706         case USB_ENDPOINT_XFER_ISOC:
707                 r8a66597_type = R8A66597_ISO;
708                 break;
709         default:
710                 printk(KERN_ERR "r8a66597: Illegal type\n");
711                 r8a66597_type = 0x0000;
712                 break;
713         }
714
715         return r8a66597_type;
716 }
717
718 static u16 get_bufnum(u16 pipenum)
719 {
720         u16 bufnum = 0;
721
722         if (pipenum == 0)
723                 bufnum = 0;
724         else if (check_bulk_or_isoc(pipenum))
725                 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
726         else if (check_interrupt(pipenum))
727                 bufnum = 4 + (pipenum - 6);
728         else
729                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
730
731         return bufnum;
732 }
733
734 static u16 get_buf_bsize(u16 pipenum)
735 {
736         u16 buf_bsize = 0;
737
738         if (pipenum == 0)
739                 buf_bsize = 3;
740         else if (check_bulk_or_isoc(pipenum))
741                 buf_bsize = R8A66597_BUF_BSIZE - 1;
742         else if (check_interrupt(pipenum))
743                 buf_bsize = 0;
744         else
745                 printk(KERN_ERR "r8a66597: Illegal pipenum (%d)\n", pipenum);
746
747         return buf_bsize;
748 }
749
750 /* this function must be called with interrupt disabled */
751 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
752                                      struct r8a66597_device *dev,
753                                      struct r8a66597_pipe *pipe,
754                                      struct urb *urb)
755 {
756 #if !defined(CONFIG_SUPERH_ON_CHIP_R8A66597)
757         int i;
758         struct r8a66597_pipe_info *info = &pipe->info;
759
760         if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
761                 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
762                         if ((r8a66597->dma_map & (1 << i)) != 0)
763                                 continue;
764
765                         dev_info(&dev->udev->dev,
766                                  "address %d, EndpointAddress 0x%02x use "
767                                  "DMA FIFO\n", usb_pipedevice(urb->pipe),
768                                  info->dir_in ?
769                                         USB_ENDPOINT_DIR_MASK + info->epnum
770                                         : info->epnum);
771
772                         r8a66597->dma_map |= 1 << i;
773                         dev->dma_map |= 1 << i;
774                         set_pipe_reg_addr(pipe, i);
775
776                         cfifo_change(r8a66597, 0);
777                         r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
778                                       MBW | CURPIPE, pipe->fifosel);
779
780                         r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
781                                           pipe->info.pipenum);
782                         r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
783                         break;
784                 }
785         }
786 #endif  /* #if defined(CONFIG_SUPERH_ON_CHIP_R8A66597) */
787 }
788
789 /* this function must be called with interrupt disabled */
790 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
791                                  struct usb_host_endpoint *hep,
792                                  struct r8a66597_pipe_info *info)
793 {
794         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
795         struct r8a66597_pipe *pipe = hep->hcpriv;
796
797         dbg("enable_pipe:");
798
799         pipe->info = *info;
800         set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
801         r8a66597->pipe_cnt[pipe->info.pipenum]++;
802         dev->pipe_cnt[pipe->info.pipenum]++;
803
804         enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
805 }
806
807 /* this function must be called with interrupt disabled */
808 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
809 {
810         struct r8a66597_td *td, *next;
811         struct urb *urb;
812         struct list_head *list = &r8a66597->pipe_queue[pipenum];
813
814         if (list_empty(list))
815                 return;
816
817         list_for_each_entry_safe(td, next, list, queue) {
818                 if (!td)
819                         continue;
820                 if (td->address != address)
821                         continue;
822
823                 urb = td->urb;
824                 list_del(&td->queue);
825                 kfree(td);
826
827                 if (urb) {
828                         usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597),
829                                         urb);
830
831                         spin_unlock(&r8a66597->lock);
832                         usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb,
833                                         -ENODEV);
834                         spin_lock(&r8a66597->lock);
835                 }
836                 break;
837         }
838 }
839
840 /* this function must be called with interrupt disabled */
841 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
842                                       struct r8a66597_device *dev)
843 {
844         int check_ep0 = 0;
845         u16 pipenum;
846
847         if (!dev)
848                 return;
849
850         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
851                 if (!dev->pipe_cnt[pipenum])
852                         continue;
853
854                 if (!check_ep0) {
855                         check_ep0 = 1;
856                         force_dequeue(r8a66597, 0, dev->address);
857                 }
858
859                 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
860                 dev->pipe_cnt[pipenum] = 0;
861                 force_dequeue(r8a66597, pipenum, dev->address);
862         }
863
864         dbg("disable_pipe");
865
866         r8a66597->dma_map &= ~(dev->dma_map);
867         dev->dma_map = 0;
868 }
869
870 static u16 get_interval(struct urb *urb, __u8 interval)
871 {
872         u16 time = 1;
873         int i;
874
875         if (urb->dev->speed == USB_SPEED_HIGH) {
876                 if (interval > IITV)
877                         time = IITV;
878                 else
879                         time = interval ? interval - 1 : 0;
880         } else {
881                 if (interval > 128) {
882                         time = IITV;
883                 } else {
884                         /* calculate the nearest value for PIPEPERI */
885                         for (i = 0; i < 7; i++) {
886                                 if ((1 << i) < interval &&
887                                     (1 << (i + 1) > interval))
888                                         time = 1 << i;
889                         }
890                 }
891         }
892
893         return time;
894 }
895
896 static unsigned long get_timer_interval(struct urb *urb, __u8 interval)
897 {
898         __u8 i;
899         unsigned long time = 1;
900
901         if (usb_pipeisoc(urb->pipe))
902                 return 0;
903
904         if (get_r8a66597_usb_speed(urb->dev->speed) == HSMODE) {
905                 for (i = 0; i < (interval - 1); i++)
906                         time *= 2;
907                 time = time * 125 / 1000;       /* uSOF -> msec */
908         } else {
909                 time = interval;
910         }
911
912         return time;
913 }
914
915 /* this function must be called with interrupt disabled */
916 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
917                            struct usb_host_endpoint *hep,
918                            struct usb_endpoint_descriptor *ep)
919 {
920         struct r8a66597_pipe_info info;
921
922         info.pipenum = get_empty_pipenum(r8a66597, ep);
923         info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
924         info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
925         info.maxpacket = le16_to_cpu(ep->wMaxPacketSize);
926         info.type = get_r8a66597_type(ep->bmAttributes
927                                       & USB_ENDPOINT_XFERTYPE_MASK);
928         info.bufnum = get_bufnum(info.pipenum);
929         info.buf_bsize = get_buf_bsize(info.pipenum);
930         if (info.type == R8A66597_BULK) {
931                 info.interval = 0;
932                 info.timer_interval = 0;
933         } else {
934                 info.interval = get_interval(urb, ep->bInterval);
935                 info.timer_interval = get_timer_interval(urb, ep->bInterval);
936         }
937         if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
938                 info.dir_in = 1;
939         else
940                 info.dir_in = 0;
941
942         enable_r8a66597_pipe(r8a66597, urb, hep, &info);
943 }
944
945 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
946 {
947         struct r8a66597_device *dev;
948
949         dev = get_urb_to_r8a66597_dev(r8a66597, urb);
950         dev->state = USB_STATE_CONFIGURED;
951 }
952
953 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
954                             u16 pipenum)
955 {
956         if (pipenum == 0 && usb_pipeout(urb->pipe))
957                 enable_irq_empty(r8a66597, pipenum);
958         else
959                 enable_irq_ready(r8a66597, pipenum);
960
961         if (!usb_pipeisoc(urb->pipe))
962                 enable_irq_nrdy(r8a66597, pipenum);
963 }
964
965 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
966 {
967         disable_irq_ready(r8a66597, pipenum);
968         disable_irq_nrdy(r8a66597, pipenum);
969 }
970
971 static void r8a66597_root_hub_start_polling(struct r8a66597 *r8a66597)
972 {
973         mod_timer(&r8a66597->rh_timer,
974                         jiffies + msecs_to_jiffies(R8A66597_RH_POLL_TIME));
975 }
976
977 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port,
978                                         int connect)
979 {
980         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
981
982         rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
983         rh->scount = R8A66597_MAX_SAMPLING;
984         if (connect)
985                 rh->port |= 1 << USB_PORT_FEAT_CONNECTION;
986         else
987                 rh->port &= ~(1 << USB_PORT_FEAT_CONNECTION);
988         rh->port |= 1 << USB_PORT_FEAT_C_CONNECTION;
989
990         r8a66597_root_hub_start_polling(r8a66597);
991 }
992
993 /* this function must be called with interrupt disabled */
994 static void r8a66597_check_syssts(struct r8a66597 *r8a66597, int port,
995                                         u16 syssts)
996 {
997         if (syssts == SE0) {
998                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
999                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1000                 return;
1001         }
1002
1003         if (syssts == FS_JSTS)
1004                 r8a66597_bset(r8a66597, HSE, get_syscfg_reg(port));
1005         else if (syssts == LS_JSTS)
1006                 r8a66597_bclr(r8a66597, HSE, get_syscfg_reg(port));
1007
1008         r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
1009         r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
1010 }
1011
1012 /* this function must be called with interrupt disabled */
1013 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
1014 {
1015         u16 speed = get_rh_usb_speed(r8a66597, port);
1016         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1017
1018         if (speed == HSMODE)
1019                 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
1020         else if (speed == LSMODE)
1021                 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
1022
1023         rh->port &= ~(1 << USB_PORT_FEAT_RESET);
1024         rh->port |= 1 << USB_PORT_FEAT_ENABLE;
1025 }
1026
1027 /* this function must be called with interrupt disabled */
1028 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
1029 {
1030         struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
1031
1032         disable_r8a66597_pipe_all(r8a66597, dev);
1033         free_usb_address(r8a66597, dev);
1034
1035         start_root_hub_sampling(r8a66597, port, 0);
1036 }
1037
1038 /* this function must be called with interrupt disabled */
1039 static void prepare_setup_packet(struct r8a66597 *r8a66597,
1040                                  struct r8a66597_td *td)
1041 {
1042         int i;
1043         __le16 *p = (__le16 *)td->urb->setup_packet;
1044         unsigned long setup_addr = USBREQ;
1045
1046         r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
1047                        DCPMAXP);
1048         r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
1049
1050         for (i = 0; i < 4; i++) {
1051                 r8a66597_write(r8a66597, le16_to_cpu(p[i]), setup_addr);
1052                 setup_addr += 2;
1053         }
1054         r8a66597_write(r8a66597, SUREQ, DCPCTR);
1055 }
1056
1057 /* this function must be called with interrupt disabled */
1058 static void prepare_packet_read(struct r8a66597 *r8a66597,
1059                                 struct r8a66597_td *td)
1060 {
1061         struct urb *urb = td->urb;
1062
1063         if (usb_pipecontrol(urb->pipe)) {
1064                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1065                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1066                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1067                 if (urb->actual_length == 0) {
1068                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1069                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1070                 }
1071                 pipe_irq_disable(r8a66597, td->pipenum);
1072                 pipe_start(r8a66597, td->pipe);
1073                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1074         } else {
1075                 if (urb->actual_length == 0) {
1076                         pipe_irq_disable(r8a66597, td->pipenum);
1077                         pipe_setting(r8a66597, td);
1078                         pipe_stop(r8a66597, td->pipe);
1079                         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1080
1081                         if (td->pipe->pipetre) {
1082                                 r8a66597_write(r8a66597, TRCLR,
1083                                                 td->pipe->pipetre);
1084                                 r8a66597_write(r8a66597,
1085                                                 DIV_ROUND_UP
1086                                                   (urb->transfer_buffer_length,
1087                                                    td->maxpacket),
1088                                                 td->pipe->pipetrn);
1089                                 r8a66597_bset(r8a66597, TRENB,
1090                                                 td->pipe->pipetre);
1091                         }
1092
1093                         pipe_start(r8a66597, td->pipe);
1094                         pipe_irq_enable(r8a66597, urb, td->pipenum);
1095                 }
1096         }
1097 }
1098
1099 /* this function must be called with interrupt disabled */
1100 static void prepare_packet_write(struct r8a66597 *r8a66597,
1101                                  struct r8a66597_td *td)
1102 {
1103         u16 tmp;
1104         struct urb *urb = td->urb;
1105
1106         if (usb_pipecontrol(urb->pipe)) {
1107                 pipe_stop(r8a66597, td->pipe);
1108                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1109                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1110                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1111                 if (urb->actual_length == 0) {
1112                         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1113                         r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1114                 }
1115         } else {
1116                 if (urb->actual_length == 0)
1117                         pipe_setting(r8a66597, td);
1118                 if (td->pipe->pipetre)
1119                         r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
1120         }
1121         r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
1122
1123         fifo_change_from_pipe(r8a66597, td->pipe);
1124         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1125         if (unlikely((tmp & FRDY) == 0))
1126                 pipe_irq_enable(r8a66597, urb, td->pipenum);
1127         else
1128                 packet_write(r8a66597, td->pipenum);
1129         pipe_start(r8a66597, td->pipe);
1130 }
1131
1132 /* this function must be called with interrupt disabled */
1133 static void prepare_status_packet(struct r8a66597 *r8a66597,
1134                                   struct r8a66597_td *td)
1135 {
1136         struct urb *urb = td->urb;
1137
1138         r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1139         pipe_stop(r8a66597, td->pipe);
1140
1141         if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1142                 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1143                 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1144                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1145                 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1146                 r8a66597_write(r8a66597, BCLR | BVAL, CFIFOCTR);
1147                 enable_irq_empty(r8a66597, 0);
1148         } else {
1149                 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1150                 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1151                 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1152                 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1153                 enable_irq_ready(r8a66597, 0);
1154         }
1155         enable_irq_nrdy(r8a66597, 0);
1156         pipe_start(r8a66597, td->pipe);
1157 }
1158
1159 static int is_set_address(unsigned char *setup_packet)
1160 {
1161         if (((setup_packet[0] & USB_TYPE_MASK) == USB_TYPE_STANDARD) &&
1162                         setup_packet[1] == USB_REQ_SET_ADDRESS)
1163                 return 1;
1164         else
1165                 return 0;
1166 }
1167
1168 /* this function must be called with interrupt disabled */
1169 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1170 {
1171         BUG_ON(!td);
1172
1173         switch (td->type) {
1174         case USB_PID_SETUP:
1175                 if (is_set_address(td->urb->setup_packet)) {
1176                         td->set_address = 1;
1177                         td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1178                                                                      td->urb);
1179                         if (td->urb->setup_packet[2] == 0)
1180                                 return -EPIPE;
1181                 }
1182                 prepare_setup_packet(r8a66597, td);
1183                 break;
1184         case USB_PID_IN:
1185                 prepare_packet_read(r8a66597, td);
1186                 break;
1187         case USB_PID_OUT:
1188                 prepare_packet_write(r8a66597, td);
1189                 break;
1190         case USB_PID_ACK:
1191                 prepare_status_packet(r8a66597, td);
1192                 break;
1193         default:
1194                 printk(KERN_ERR "r8a66597: invalid type.\n");
1195                 break;
1196         }
1197
1198         return 0;
1199 }
1200
1201 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1202 {
1203         if (usb_pipeisoc(urb->pipe)) {
1204                 if (urb->number_of_packets == td->iso_cnt)
1205                         return 1;
1206         }
1207
1208         /* control or bulk or interrupt */
1209         if ((urb->transfer_buffer_length <= urb->actual_length) ||
1210             (td->short_packet) || (td->zero_packet))
1211                 return 1;
1212
1213         return 0;
1214 }
1215
1216 /* this function must be called with interrupt disabled */
1217 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1218 {
1219         unsigned long time;
1220
1221         BUG_ON(!td);
1222
1223         if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1224             !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1225                 r8a66597->timeout_map |= 1 << td->pipenum;
1226                 switch (usb_pipetype(td->urb->pipe)) {
1227                 case PIPE_INTERRUPT:
1228                 case PIPE_ISOCHRONOUS:
1229                         time = 30;
1230                         break;
1231                 default:
1232                         time = 300;
1233                         break;
1234                 }
1235
1236                 mod_timer(&r8a66597->td_timer[td->pipenum],
1237                           jiffies + msecs_to_jiffies(time));
1238         }
1239 }
1240
1241 /* this function must be called with interrupt disabled */
1242 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1243                 u16 pipenum, struct urb *urb, int status)
1244 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1245 {
1246         int restart = 0;
1247         struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1248
1249         r8a66597->timeout_map &= ~(1 << pipenum);
1250
1251         if (likely(td)) {
1252                 if (td->set_address && (status != 0 || urb->unlinked))
1253                         r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1254
1255                 pipe_toggle_save(r8a66597, td->pipe, urb);
1256                 list_del(&td->queue);
1257                 kfree(td);
1258         }
1259
1260         if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1261                 restart = 1;
1262
1263         if (likely(urb)) {
1264                 if (usb_pipeisoc(urb->pipe))
1265                         urb->start_frame = r8a66597_get_frame(hcd);
1266
1267                 usb_hcd_unlink_urb_from_ep(r8a66597_to_hcd(r8a66597), urb);
1268                 spin_unlock(&r8a66597->lock);
1269                 usb_hcd_giveback_urb(hcd, urb, status);
1270                 spin_lock(&r8a66597->lock);
1271         }
1272
1273         if (restart) {
1274                 td = r8a66597_get_td(r8a66597, pipenum);
1275                 if (unlikely(!td))
1276                         return;
1277
1278                 start_transfer(r8a66597, td);
1279                 set_td_timer(r8a66597, td);
1280         }
1281 }
1282
1283 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1284 {
1285         u16 tmp;
1286         int rcv_len, bufsize, urb_len, size;
1287         u16 *buf;
1288         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1289         struct urb *urb;
1290         int finish = 0;
1291         int status = 0;
1292
1293         if (unlikely(!td))
1294                 return;
1295         urb = td->urb;
1296
1297         fifo_change_from_pipe(r8a66597, td->pipe);
1298         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1299         if (unlikely((tmp & FRDY) == 0)) {
1300                 pipe_stop(r8a66597, td->pipe);
1301                 pipe_irq_disable(r8a66597, pipenum);
1302                 printk(KERN_ERR "r8a66597: in fifo not ready (%d)\n", pipenum);
1303                 finish_request(r8a66597, td, pipenum, td->urb, -EPIPE);
1304                 return;
1305         }
1306
1307         /* prepare parameters */
1308         rcv_len = tmp & DTLN;
1309         if (usb_pipeisoc(urb->pipe)) {
1310                 buf = (u16 *)(urb->transfer_buffer +
1311                                 urb->iso_frame_desc[td->iso_cnt].offset);
1312                 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1313         } else {
1314                 buf = (void *)urb->transfer_buffer + urb->actual_length;
1315                 urb_len = urb->transfer_buffer_length - urb->actual_length;
1316         }
1317         bufsize = min(urb_len, (int) td->maxpacket);
1318         if (rcv_len <= bufsize) {
1319                 size = rcv_len;
1320         } else {
1321                 size = bufsize;
1322                 status = -EOVERFLOW;
1323                 finish = 1;
1324         }
1325
1326         /* update parameters */
1327         urb->actual_length += size;
1328         if (rcv_len == 0)
1329                 td->zero_packet = 1;
1330         if (rcv_len < bufsize) {
1331                 td->short_packet = 1;
1332         }
1333         if (usb_pipeisoc(urb->pipe)) {
1334                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1335                 urb->iso_frame_desc[td->iso_cnt].status = status;
1336                 td->iso_cnt++;
1337                 finish = 0;
1338         }
1339
1340         /* check transfer finish */
1341         if (finish || check_transfer_finish(td, urb)) {
1342                 pipe_stop(r8a66597, td->pipe);
1343                 pipe_irq_disable(r8a66597, pipenum);
1344                 finish = 1;
1345         }
1346
1347         /* read fifo */
1348         if (urb->transfer_buffer) {
1349                 if (size == 0)
1350                         r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1351                 else
1352                         r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1353                                            buf, size);
1354         }
1355
1356         if (finish && pipenum != 0)
1357                 finish_request(r8a66597, td, pipenum, urb, status);
1358 }
1359
1360 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1361 {
1362         u16 tmp;
1363         int bufsize, size;
1364         u16 *buf;
1365         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1366         struct urb *urb;
1367
1368         if (unlikely(!td))
1369                 return;
1370         urb = td->urb;
1371
1372         fifo_change_from_pipe(r8a66597, td->pipe);
1373         tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1374         if (unlikely((tmp & FRDY) == 0)) {
1375                 pipe_stop(r8a66597, td->pipe);
1376                 pipe_irq_disable(r8a66597, pipenum);
1377                 printk(KERN_ERR "r8a66597: out fifo not ready (%d)\n", pipenum);
1378                 finish_request(r8a66597, td, pipenum, urb, -EPIPE);
1379                 return;
1380         }
1381
1382         /* prepare parameters */
1383         bufsize = td->maxpacket;
1384         if (usb_pipeisoc(urb->pipe)) {
1385                 buf = (u16 *)(urb->transfer_buffer +
1386                                 urb->iso_frame_desc[td->iso_cnt].offset);
1387                 size = min(bufsize,
1388                            (int)urb->iso_frame_desc[td->iso_cnt].length);
1389         } else {
1390                 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1391                 size = min((int)bufsize,
1392                            urb->transfer_buffer_length - urb->actual_length);
1393         }
1394
1395         /* write fifo */
1396         if (pipenum > 0)
1397                 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1398         if (urb->transfer_buffer) {
1399                 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1400                 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1401                         r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1402         }
1403
1404         /* update parameters */
1405         urb->actual_length += size;
1406         if (usb_pipeisoc(urb->pipe)) {
1407                 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1408                 urb->iso_frame_desc[td->iso_cnt].status = 0;
1409                 td->iso_cnt++;
1410         }
1411
1412         /* check transfer finish */
1413         if (check_transfer_finish(td, urb)) {
1414                 disable_irq_ready(r8a66597, pipenum);
1415                 enable_irq_empty(r8a66597, pipenum);
1416                 if (!usb_pipeisoc(urb->pipe))
1417                         enable_irq_nrdy(r8a66597, pipenum);
1418         } else
1419                 pipe_irq_enable(r8a66597, urb, pipenum);
1420 }
1421
1422
1423 static void check_next_phase(struct r8a66597 *r8a66597, int status)
1424 {
1425         struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1426         struct urb *urb;
1427         u8 finish = 0;
1428
1429         if (unlikely(!td))
1430                 return;
1431         urb = td->urb;
1432
1433         switch (td->type) {
1434         case USB_PID_IN:
1435         case USB_PID_OUT:
1436                 if (check_transfer_finish(td, urb))
1437                         td->type = USB_PID_ACK;
1438                 break;
1439         case USB_PID_SETUP:
1440                 if (urb->transfer_buffer_length == urb->actual_length)
1441                         td->type = USB_PID_ACK;
1442                 else if (usb_pipeout(urb->pipe))
1443                         td->type = USB_PID_OUT;
1444                 else
1445                         td->type = USB_PID_IN;
1446                 break;
1447         case USB_PID_ACK:
1448                 finish = 1;
1449                 break;
1450         }
1451
1452         if (finish || status != 0 || urb->unlinked)
1453                 finish_request(r8a66597, td, 0, urb, status);
1454         else
1455                 start_transfer(r8a66597, td);
1456 }
1457
1458 static int get_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1459 {
1460         struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1461
1462         if (td) {
1463                 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1464
1465                 if (pid == PID_NAK)
1466                         return -ECONNRESET;
1467                 else
1468                         return -EPIPE;
1469         }
1470         return 0;
1471 }
1472
1473 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1474 {
1475         u16 check;
1476         u16 pipenum;
1477         u16 mask;
1478         struct r8a66597_td *td;
1479
1480         mask = r8a66597_read(r8a66597, BRDYSTS)
1481                & r8a66597_read(r8a66597, BRDYENB);
1482         r8a66597_write(r8a66597, ~mask, BRDYSTS);
1483         if (mask & BRDY0) {
1484                 td = r8a66597_get_td(r8a66597, 0);
1485                 if (td && td->type == USB_PID_IN)
1486                         packet_read(r8a66597, 0);
1487                 else
1488                         pipe_irq_disable(r8a66597, 0);
1489                 check_next_phase(r8a66597, 0);
1490         }
1491
1492         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1493                 check = 1 << pipenum;
1494                 if (mask & check) {
1495                         td = r8a66597_get_td(r8a66597, pipenum);
1496                         if (unlikely(!td))
1497                                 continue;
1498
1499                         if (td->type == USB_PID_IN)
1500                                 packet_read(r8a66597, pipenum);
1501                         else if (td->type == USB_PID_OUT)
1502                                 packet_write(r8a66597, pipenum);
1503                 }
1504         }
1505 }
1506
1507 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1508 {
1509         u16 tmp;
1510         u16 check;
1511         u16 pipenum;
1512         u16 mask;
1513         struct r8a66597_td *td;
1514
1515         mask = r8a66597_read(r8a66597, BEMPSTS)
1516                & r8a66597_read(r8a66597, BEMPENB);
1517         r8a66597_write(r8a66597, ~mask, BEMPSTS);
1518         if (mask & BEMP0) {
1519                 cfifo_change(r8a66597, 0);
1520                 td = r8a66597_get_td(r8a66597, 0);
1521                 if (td && td->type != USB_PID_OUT)
1522                         disable_irq_empty(r8a66597, 0);
1523                 check_next_phase(r8a66597, 0);
1524         }
1525
1526         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1527                 check = 1 << pipenum;
1528                 if (mask &  check) {
1529                         struct r8a66597_td *td;
1530                         td = r8a66597_get_td(r8a66597, pipenum);
1531                         if (unlikely(!td))
1532                                 continue;
1533
1534                         tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1535                         if ((tmp & INBUFM) == 0) {
1536                                 disable_irq_empty(r8a66597, pipenum);
1537                                 pipe_irq_disable(r8a66597, pipenum);
1538                                 finish_request(r8a66597, td, pipenum, td->urb,
1539                                                 0);
1540                         }
1541                 }
1542         }
1543 }
1544
1545 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1546 {
1547         u16 check;
1548         u16 pipenum;
1549         u16 mask;
1550         int status;
1551
1552         mask = r8a66597_read(r8a66597, NRDYSTS)
1553                & r8a66597_read(r8a66597, NRDYENB);
1554         r8a66597_write(r8a66597, ~mask, NRDYSTS);
1555         if (mask & NRDY0) {
1556                 cfifo_change(r8a66597, 0);
1557                 status = get_urb_error(r8a66597, 0);
1558                 pipe_irq_disable(r8a66597, 0);
1559                 check_next_phase(r8a66597, status);
1560         }
1561
1562         for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1563                 check = 1 << pipenum;
1564                 if (mask & check) {
1565                         struct r8a66597_td *td;
1566                         td = r8a66597_get_td(r8a66597, pipenum);
1567                         if (unlikely(!td))
1568                                 continue;
1569
1570                         status = get_urb_error(r8a66597, pipenum);
1571                         pipe_irq_disable(r8a66597, pipenum);
1572                         pipe_stop(r8a66597, td->pipe);
1573                         finish_request(r8a66597, td, pipenum, td->urb, status);
1574                 }
1575         }
1576 }
1577
1578 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1579 {
1580         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1581         u16 intsts0, intsts1, intsts2;
1582         u16 intenb0, intenb1, intenb2;
1583         u16 mask0, mask1, mask2;
1584         int status;
1585
1586         spin_lock(&r8a66597->lock);
1587
1588         intsts0 = r8a66597_read(r8a66597, INTSTS0);
1589         intsts1 = r8a66597_read(r8a66597, INTSTS1);
1590         intsts2 = r8a66597_read(r8a66597, INTSTS2);
1591         intenb0 = r8a66597_read(r8a66597, INTENB0);
1592         intenb1 = r8a66597_read(r8a66597, INTENB1);
1593         intenb2 = r8a66597_read(r8a66597, INTENB2);
1594
1595         mask2 = intsts2 & intenb2;
1596         mask1 = intsts1 & intenb1;
1597         mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1598         if (mask2) {
1599                 if (mask2 & ATTCH) {
1600                         r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1601                         r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1602
1603                         /* start usb bus sampling */
1604                         start_root_hub_sampling(r8a66597, 1, 1);
1605                 }
1606                 if (mask2 & DTCH) {
1607                         r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1608                         r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1609                         r8a66597_usb_disconnect(r8a66597, 1);
1610                 }
1611         }
1612
1613         if (mask1) {
1614                 if (mask1 & ATTCH) {
1615                         r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1616                         r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1617
1618                         /* start usb bus sampling */
1619                         start_root_hub_sampling(r8a66597, 0, 1);
1620                 }
1621                 if (mask1 & DTCH) {
1622                         r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1623                         r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1624                         r8a66597_usb_disconnect(r8a66597, 0);
1625                 }
1626                 if (mask1 & SIGN) {
1627                         r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1628                         status = get_urb_error(r8a66597, 0);
1629                         check_next_phase(r8a66597, status);
1630                 }
1631                 if (mask1 & SACK) {
1632                         r8a66597_write(r8a66597, ~SACK, INTSTS1);
1633                         check_next_phase(r8a66597, 0);
1634                 }
1635         }
1636         if (mask0) {
1637                 if (mask0 & BRDY)
1638                         irq_pipe_ready(r8a66597);
1639                 if (mask0 & BEMP)
1640                         irq_pipe_empty(r8a66597);
1641                 if (mask0 & NRDY)
1642                         irq_pipe_nrdy(r8a66597);
1643         }
1644
1645         spin_unlock(&r8a66597->lock);
1646         return IRQ_HANDLED;
1647 }
1648
1649 /* this function must be called with interrupt disabled */
1650 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1651 {
1652         u16 tmp;
1653         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1654
1655         if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1656                 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1657
1658                 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1659                 if ((tmp & USBRST) == USBRST) {
1660                         r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1661                                       dvstctr_reg);
1662                         r8a66597_root_hub_start_polling(r8a66597);
1663                 } else
1664                         r8a66597_usb_connect(r8a66597, port);
1665         }
1666
1667         if (!(rh->port & (1 << USB_PORT_FEAT_CONNECTION))) {
1668                 r8a66597_write(r8a66597, ~ATTCH, get_intsts_reg(port));
1669                 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
1670         }
1671
1672         if (rh->scount > 0) {
1673                 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1674                 if (tmp == rh->old_syssts) {
1675                         rh->scount--;
1676                         if (rh->scount == 0)
1677                                 r8a66597_check_syssts(r8a66597, port, tmp);
1678                         else
1679                                 r8a66597_root_hub_start_polling(r8a66597);
1680                 } else {
1681                         rh->scount = R8A66597_MAX_SAMPLING;
1682                         rh->old_syssts = tmp;
1683                         r8a66597_root_hub_start_polling(r8a66597);
1684                 }
1685         }
1686 }
1687
1688 static void r8a66597_interval_timer(unsigned long _r8a66597)
1689 {
1690         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1691         unsigned long flags;
1692         u16 pipenum;
1693         struct r8a66597_td *td;
1694
1695         spin_lock_irqsave(&r8a66597->lock, flags);
1696
1697         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1698                 if (!(r8a66597->interval_map & (1 << pipenum)))
1699                         continue;
1700                 if (timer_pending(&r8a66597->interval_timer[pipenum]))
1701                         continue;
1702
1703                 td = r8a66597_get_td(r8a66597, pipenum);
1704                 if (td)
1705                         start_transfer(r8a66597, td);
1706         }
1707
1708         spin_unlock_irqrestore(&r8a66597->lock, flags);
1709 }
1710
1711 static void r8a66597_td_timer(unsigned long _r8a66597)
1712 {
1713         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1714         unsigned long flags;
1715         u16 pipenum;
1716         struct r8a66597_td *td, *new_td = NULL;
1717         struct r8a66597_pipe *pipe;
1718
1719         spin_lock_irqsave(&r8a66597->lock, flags);
1720         for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1721                 if (!(r8a66597->timeout_map & (1 << pipenum)))
1722                         continue;
1723                 if (timer_pending(&r8a66597->td_timer[pipenum]))
1724                         continue;
1725
1726                 td = r8a66597_get_td(r8a66597, pipenum);
1727                 if (!td) {
1728                         r8a66597->timeout_map &= ~(1 << pipenum);
1729                         continue;
1730                 }
1731
1732                 if (td->urb->actual_length) {
1733                         set_td_timer(r8a66597, td);
1734                         break;
1735                 }
1736
1737                 pipe = td->pipe;
1738                 pipe_stop(r8a66597, pipe);
1739
1740                 new_td = td;
1741                 do {
1742                         list_move_tail(&new_td->queue,
1743                                        &r8a66597->pipe_queue[pipenum]);
1744                         new_td = r8a66597_get_td(r8a66597, pipenum);
1745                         if (!new_td) {
1746                                 new_td = td;
1747                                 break;
1748                         }
1749                 } while (td != new_td && td->address == new_td->address);
1750
1751                 start_transfer(r8a66597, new_td);
1752
1753                 if (td == new_td)
1754                         r8a66597->timeout_map &= ~(1 << pipenum);
1755                 else
1756                         set_td_timer(r8a66597, new_td);
1757                 break;
1758         }
1759         spin_unlock_irqrestore(&r8a66597->lock, flags);
1760 }
1761
1762 static void r8a66597_timer(unsigned long _r8a66597)
1763 {
1764         struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1765         unsigned long flags;
1766
1767         spin_lock_irqsave(&r8a66597->lock, flags);
1768
1769         r8a66597_root_hub_control(r8a66597, 0);
1770         r8a66597_root_hub_control(r8a66597, 1);
1771
1772         spin_unlock_irqrestore(&r8a66597->lock, flags);
1773 }
1774
1775 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1776 {
1777         struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1778
1779         if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1780             (urb->dev->state == USB_STATE_CONFIGURED))
1781                 return 1;
1782         else
1783                 return 0;
1784 }
1785
1786 static int r8a66597_start(struct usb_hcd *hcd)
1787 {
1788         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1789
1790         hcd->state = HC_STATE_RUNNING;
1791         return enable_controller(r8a66597);
1792 }
1793
1794 static void r8a66597_stop(struct usb_hcd *hcd)
1795 {
1796         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1797
1798         disable_controller(r8a66597);
1799 }
1800
1801 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1802 {
1803         unsigned int usb_address = usb_pipedevice(urb->pipe);
1804         u16 root_port, hub_port;
1805
1806         if (usb_address == 0) {
1807                 get_port_number(urb->dev->devpath,
1808                                 &root_port, &hub_port);
1809                 set_devadd_reg(r8a66597, 0,
1810                                get_r8a66597_usb_speed(urb->dev->speed),
1811                                get_parent_r8a66597_address(r8a66597, urb->dev),
1812                                hub_port, root_port);
1813         }
1814 }
1815
1816 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1817                                             struct urb *urb,
1818                                             struct usb_host_endpoint *hep)
1819 {
1820         struct r8a66597_td *td;
1821         u16 pipenum;
1822
1823         td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1824         if (td == NULL)
1825                 return NULL;
1826
1827         pipenum = r8a66597_get_pipenum(urb, hep);
1828         td->pipenum = pipenum;
1829         td->pipe = hep->hcpriv;
1830         td->urb = urb;
1831         td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1832         td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1833                                       !usb_pipein(urb->pipe));
1834         if (usb_pipecontrol(urb->pipe))
1835                 td->type = USB_PID_SETUP;
1836         else if (usb_pipein(urb->pipe))
1837                 td->type = USB_PID_IN;
1838         else
1839                 td->type = USB_PID_OUT;
1840         INIT_LIST_HEAD(&td->queue);
1841
1842         return td;
1843 }
1844
1845 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1846                                 struct urb *urb,
1847                                 gfp_t mem_flags)
1848 {
1849         struct usb_host_endpoint *hep = urb->ep;
1850         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1851         struct r8a66597_td *td = NULL;
1852         int ret, request = 0;
1853         unsigned long flags;
1854
1855         spin_lock_irqsave(&r8a66597->lock, flags);
1856         if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1857                 ret = -ENODEV;
1858                 goto error_not_linked;
1859         }
1860
1861         ret = usb_hcd_link_urb_to_ep(hcd, urb);
1862         if (ret)
1863                 goto error_not_linked;
1864
1865         if (!hep->hcpriv) {
1866                 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1867                                 GFP_ATOMIC);
1868                 if (!hep->hcpriv) {
1869                         ret = -ENOMEM;
1870                         goto error;
1871                 }
1872                 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1873                 if (usb_pipeendpoint(urb->pipe))
1874                         init_pipe_info(r8a66597, urb, hep, &hep->desc);
1875         }
1876
1877         if (unlikely(check_pipe_config(r8a66597, urb)))
1878                 init_pipe_config(r8a66597, urb);
1879
1880         set_address_zero(r8a66597, urb);
1881         td = r8a66597_make_td(r8a66597, urb, hep);
1882         if (td == NULL) {
1883                 ret = -ENOMEM;
1884                 goto error;
1885         }
1886         if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1887                 request = 1;
1888         list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1889         urb->hcpriv = td;
1890
1891         if (request) {
1892                 if (td->pipe->info.timer_interval) {
1893                         r8a66597->interval_map |= 1 << td->pipenum;
1894                         mod_timer(&r8a66597->interval_timer[td->pipenum],
1895                                   jiffies + msecs_to_jiffies(
1896                                         td->pipe->info.timer_interval));
1897                 } else {
1898                         ret = start_transfer(r8a66597, td);
1899                         if (ret < 0) {
1900                                 list_del(&td->queue);
1901                                 kfree(td);
1902                         }
1903                 }
1904         } else
1905                 set_td_timer(r8a66597, td);
1906
1907 error:
1908         if (ret)
1909                 usb_hcd_unlink_urb_from_ep(hcd, urb);
1910 error_not_linked:
1911         spin_unlock_irqrestore(&r8a66597->lock, flags);
1912         return ret;
1913 }
1914
1915 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
1916                 int status)
1917 {
1918         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1919         struct r8a66597_td *td;
1920         unsigned long flags;
1921         int rc;
1922
1923         spin_lock_irqsave(&r8a66597->lock, flags);
1924         rc = usb_hcd_check_unlink_urb(hcd, urb, status);
1925         if (rc)
1926                 goto done;
1927
1928         if (urb->hcpriv) {
1929                 td = urb->hcpriv;
1930                 pipe_stop(r8a66597, td->pipe);
1931                 pipe_irq_disable(r8a66597, td->pipenum);
1932                 disable_irq_empty(r8a66597, td->pipenum);
1933                 finish_request(r8a66597, td, td->pipenum, urb, status);
1934         }
1935  done:
1936         spin_unlock_irqrestore(&r8a66597->lock, flags);
1937         return rc;
1938 }
1939
1940 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1941                                       struct usb_host_endpoint *hep)
1942 {
1943         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1944         struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1945         struct r8a66597_td *td;
1946         struct urb *urb = NULL;
1947         u16 pipenum;
1948         unsigned long flags;
1949
1950         if (pipe == NULL)
1951                 return;
1952         pipenum = pipe->info.pipenum;
1953
1954         if (pipenum == 0) {
1955                 kfree(hep->hcpriv);
1956                 hep->hcpriv = NULL;
1957                 return;
1958         }
1959
1960         spin_lock_irqsave(&r8a66597->lock, flags);
1961         pipe_stop(r8a66597, pipe);
1962         pipe_irq_disable(r8a66597, pipenum);
1963         disable_irq_empty(r8a66597, pipenum);
1964         td = r8a66597_get_td(r8a66597, pipenum);
1965         if (td)
1966                 urb = td->urb;
1967         finish_request(r8a66597, td, pipenum, urb, -ESHUTDOWN);
1968         kfree(hep->hcpriv);
1969         hep->hcpriv = NULL;
1970         spin_unlock_irqrestore(&r8a66597->lock, flags);
1971 }
1972
1973 static int r8a66597_get_frame(struct usb_hcd *hcd)
1974 {
1975         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1976         return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1977 }
1978
1979 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1980 {
1981         int chix;
1982
1983         if (udev->state == USB_STATE_CONFIGURED &&
1984             udev->parent && udev->parent->devnum > 1 &&
1985             udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1986                 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1987
1988         for (chix = 0; chix < udev->maxchild; chix++) {
1989                 struct usb_device *childdev = udev->children[chix];
1990
1991                 if (childdev)
1992                         collect_usb_address_map(childdev, map);
1993         }
1994 }
1995
1996 /* this function must be called with interrupt disabled */
1997 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1998                                                    int addr)
1999 {
2000         struct r8a66597_device *dev;
2001         struct list_head *list = &r8a66597->child_device;
2002
2003         list_for_each_entry(dev, list, device_list) {
2004                 if (!dev)
2005                         continue;
2006                 if (dev->usb_address != addr)
2007                         continue;
2008
2009                 return dev;
2010         }
2011
2012         printk(KERN_ERR "r8a66597: get_r8a66597_device fail.(%d)\n", addr);
2013         return NULL;
2014 }
2015
2016 static void update_usb_address_map(struct r8a66597 *r8a66597,
2017                                    struct usb_device *root_hub,
2018                                    unsigned long *map)
2019 {
2020         int i, j, addr;
2021         unsigned long diff;
2022         unsigned long flags;
2023
2024         for (i = 0; i < 4; i++) {
2025                 diff = r8a66597->child_connect_map[i] ^ map[i];
2026                 if (!diff)
2027                         continue;
2028
2029                 for (j = 0; j < 32; j++) {
2030                         if (!(diff & (1 << j)))
2031                                 continue;
2032
2033                         addr = i * 32 + j;
2034                         if (map[i] & (1 << j))
2035                                 set_child_connect_map(r8a66597, addr);
2036                         else {
2037                                 struct r8a66597_device *dev;
2038
2039                                 spin_lock_irqsave(&r8a66597->lock, flags);
2040                                 dev = get_r8a66597_device(r8a66597, addr);
2041                                 disable_r8a66597_pipe_all(r8a66597, dev);
2042                                 free_usb_address(r8a66597, dev);
2043                                 put_child_connect_map(r8a66597, addr);
2044                                 spin_unlock_irqrestore(&r8a66597->lock, flags);
2045                         }
2046                 }
2047         }
2048 }
2049
2050 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
2051                                         struct usb_hcd *hcd)
2052 {
2053         struct usb_bus *bus;
2054         unsigned long now_map[4];
2055
2056         memset(now_map, 0, sizeof(now_map));
2057
2058         list_for_each_entry(bus, &usb_bus_list, bus_list) {
2059                 if (!bus->root_hub)
2060                         continue;
2061
2062                 if (bus->busnum != hcd->self.busnum)
2063                         continue;
2064
2065                 collect_usb_address_map(bus->root_hub, now_map);
2066                 update_usb_address_map(r8a66597, bus->root_hub, now_map);
2067         }
2068 }
2069
2070 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
2071 {
2072         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2073         unsigned long flags;
2074         int i;
2075
2076         r8a66597_check_detect_child(r8a66597, hcd);
2077
2078         spin_lock_irqsave(&r8a66597->lock, flags);
2079
2080         *buf = 0;       /* initialize (no change) */
2081
2082         for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
2083                 if (r8a66597->root_hub[i].port & 0xffff0000)
2084                         *buf |= 1 << (i + 1);
2085         }
2086
2087         spin_unlock_irqrestore(&r8a66597->lock, flags);
2088
2089         return (*buf != 0);
2090 }
2091
2092 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
2093                                     struct usb_hub_descriptor *desc)
2094 {
2095         desc->bDescriptorType = 0x29;
2096         desc->bHubContrCurrent = 0;
2097         desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
2098         desc->bDescLength = 9;
2099         desc->bPwrOn2PwrGood = 0;
2100         desc->wHubCharacteristics = cpu_to_le16(0x0011);
2101         desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
2102         desc->bitmap[1] = ~0;
2103 }
2104
2105 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
2106                                 u16 wIndex, char *buf, u16 wLength)
2107 {
2108         struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
2109         int ret;
2110         int port = (wIndex & 0x00FF) - 1;
2111         struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
2112         unsigned long flags;
2113
2114         ret = 0;
2115
2116         spin_lock_irqsave(&r8a66597->lock, flags);
2117         switch (typeReq) {
2118         case ClearHubFeature:
2119         case SetHubFeature:
2120                 switch (wValue) {
2121                 case C_HUB_OVER_CURRENT:
2122                 case C_HUB_LOCAL_POWER:
2123                         break;
2124                 default:
2125                         goto error;
2126                 }
2127                 break;
2128         case ClearPortFeature:
2129                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2130                         goto error;
2131                 if (wLength != 0)
2132                         goto error;
2133
2134                 switch (wValue) {
2135                 case USB_PORT_FEAT_ENABLE:
2136                         rh->port &= (1 << USB_PORT_FEAT_POWER);
2137                         break;
2138                 case USB_PORT_FEAT_SUSPEND:
2139                         break;
2140                 case USB_PORT_FEAT_POWER:
2141                         r8a66597_port_power(r8a66597, port, 0);
2142                         break;
2143                 case USB_PORT_FEAT_C_ENABLE:
2144                 case USB_PORT_FEAT_C_SUSPEND:
2145                 case USB_PORT_FEAT_C_CONNECTION:
2146                 case USB_PORT_FEAT_C_OVER_CURRENT:
2147                 case USB_PORT_FEAT_C_RESET:
2148                         break;
2149                 default:
2150                         goto error;
2151                 }
2152                 rh->port &= ~(1 << wValue);
2153                 break;
2154         case GetHubDescriptor:
2155                 r8a66597_hub_descriptor(r8a66597,
2156                                         (struct usb_hub_descriptor *)buf);
2157                 break;
2158         case GetHubStatus:
2159                 *buf = 0x00;
2160                 break;
2161         case GetPortStatus:
2162                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2163                         goto error;
2164                 *(__le32 *)buf = cpu_to_le32(rh->port);
2165                 break;
2166         case SetPortFeature:
2167                 if (wIndex > R8A66597_MAX_ROOT_HUB)
2168                         goto error;
2169                 if (wLength != 0)
2170                         goto error;
2171
2172                 switch (wValue) {
2173                 case USB_PORT_FEAT_SUSPEND:
2174                         break;
2175                 case USB_PORT_FEAT_POWER:
2176                         r8a66597_port_power(r8a66597, port, 1);
2177                         rh->port |= (1 << USB_PORT_FEAT_POWER);
2178                         break;
2179                 case USB_PORT_FEAT_RESET: {
2180                         struct r8a66597_device *dev = rh->dev;
2181
2182                         rh->port |= (1 << USB_PORT_FEAT_RESET);
2183
2184                         disable_r8a66597_pipe_all(r8a66597, dev);
2185                         free_usb_address(r8a66597, dev);
2186
2187                         r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2188                                       get_dvstctr_reg(port));
2189                         mod_timer(&r8a66597->rh_timer,
2190                                   jiffies + msecs_to_jiffies(50));
2191                         }
2192                         break;
2193                 default:
2194                         goto error;
2195                 }
2196                 rh->port |= 1 << wValue;
2197                 break;
2198         default:
2199 error:
2200                 ret = -EPIPE;
2201                 break;
2202         }
2203
2204         spin_unlock_irqrestore(&r8a66597->lock, flags);
2205         return ret;
2206 }
2207
2208 static struct hc_driver r8a66597_hc_driver = {
2209         .description =          hcd_name,
2210         .hcd_priv_size =        sizeof(struct r8a66597),
2211         .irq =                  r8a66597_irq,
2212
2213         /*
2214          * generic hardware linkage
2215          */
2216         .flags =                HCD_USB2,
2217
2218         .start =                r8a66597_start,
2219         .stop =                 r8a66597_stop,
2220
2221         /*
2222          * managing i/o requests and associated device resources
2223          */
2224         .urb_enqueue =          r8a66597_urb_enqueue,
2225         .urb_dequeue =          r8a66597_urb_dequeue,
2226         .endpoint_disable =     r8a66597_endpoint_disable,
2227
2228         /*
2229          * periodic schedule support
2230          */
2231         .get_frame_number =     r8a66597_get_frame,
2232
2233         /*
2234          * root hub support
2235          */
2236         .hub_status_data =      r8a66597_hub_status_data,
2237         .hub_control =          r8a66597_hub_control,
2238 };
2239
2240 #if defined(CONFIG_PM)
2241 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2242 {
2243         return 0;
2244 }
2245
2246 static int r8a66597_resume(struct platform_device *pdev)
2247 {
2248         return 0;
2249 }
2250 #else   /* if defined(CONFIG_PM) */
2251 #define r8a66597_suspend        NULL
2252 #define r8a66597_resume         NULL
2253 #endif
2254
2255 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2256 {
2257         struct r8a66597         *r8a66597 = dev_get_drvdata(&pdev->dev);
2258         struct usb_hcd          *hcd = r8a66597_to_hcd(r8a66597);
2259
2260         del_timer_sync(&r8a66597->rh_timer);
2261         usb_remove_hcd(hcd);
2262         iounmap((void *)r8a66597->reg);
2263         usb_put_hcd(hcd);
2264         return 0;
2265 }
2266
2267 #define resource_len(r) (((r)->end - (r)->start) + 1)
2268 static int __init r8a66597_probe(struct platform_device *pdev)
2269 {
2270         struct resource *res = NULL, *ires;
2271         int irq = -1;
2272         void __iomem *reg = NULL;
2273         struct usb_hcd *hcd = NULL;
2274         struct r8a66597 *r8a66597;
2275         int ret = 0;
2276         int i;
2277         unsigned long irq_trigger;
2278
2279         if (pdev->dev.dma_mask) {
2280                 ret = -EINVAL;
2281                 dev_err(&pdev->dev, "dma not supported\n");
2282                 goto clean_up;
2283         }
2284
2285         res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2286                                            (char *)hcd_name);
2287         if (!res) {
2288                 ret = -ENODEV;
2289                 dev_err(&pdev->dev, "platform_get_resource_byname error.\n");
2290                 goto clean_up;
2291         }
2292
2293         ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
2294         if (!ires) {
2295                 ret = -ENODEV;
2296                 dev_err(&pdev->dev,
2297                         "platform_get_resource IORESOURCE_IRQ error.\n");
2298                 goto clean_up;
2299         }
2300
2301         irq = ires->start;
2302         irq_trigger = ires->flags & IRQF_TRIGGER_MASK;
2303
2304         reg = ioremap(res->start, resource_len(res));
2305         if (reg == NULL) {
2306                 ret = -ENOMEM;
2307                 dev_err(&pdev->dev, "ioremap error.\n");
2308                 goto clean_up;
2309         }
2310
2311         /* initialize hcd */
2312         hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2313         if (!hcd) {
2314                 ret = -ENOMEM;
2315                 dev_err(&pdev->dev, "Failed to create hcd\n");
2316                 goto clean_up;
2317         }
2318         r8a66597 = hcd_to_r8a66597(hcd);
2319         memset(r8a66597, 0, sizeof(struct r8a66597));
2320         dev_set_drvdata(&pdev->dev, r8a66597);
2321
2322         spin_lock_init(&r8a66597->lock);
2323         init_timer(&r8a66597->rh_timer);
2324         r8a66597->rh_timer.function = r8a66597_timer;
2325         r8a66597->rh_timer.data = (unsigned long)r8a66597;
2326         r8a66597->reg = (unsigned long)reg;
2327
2328         for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2329                 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2330                 init_timer(&r8a66597->td_timer[i]);
2331                 r8a66597->td_timer[i].function = r8a66597_td_timer;
2332                 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2333                 setup_timer(&r8a66597->interval_timer[i],
2334                                 r8a66597_interval_timer,
2335                                 (unsigned long)r8a66597);
2336         }
2337         INIT_LIST_HEAD(&r8a66597->child_device);
2338
2339         hcd->rsrc_start = res->start;
2340
2341         /* irq_sense setting on cmdline takes precedence over resource
2342          * settings, so the introduction of irqflags in IRQ resourse
2343          * won't disturb existing setups */
2344         switch (irq_sense) {
2345                 case INTL:
2346                         irq_trigger = IRQF_TRIGGER_LOW;
2347                         break;
2348                 case 0:
2349                         irq_trigger = IRQF_TRIGGER_FALLING;
2350                         break;
2351                 case 0xff:
2352                         if (irq_trigger)
2353                                 irq_sense = (irq_trigger & IRQF_TRIGGER_LOW) ?
2354                                             INTL : 0;
2355                         else {
2356                                 irq_sense = INTL;
2357                                 irq_trigger = IRQF_TRIGGER_LOW;
2358                         }
2359                         break;
2360                 default:
2361                         dev_err(&pdev->dev, "Unknown irq_sense value.\n");
2362         }
2363
2364         ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | irq_trigger);
2365         if (ret != 0) {
2366                 dev_err(&pdev->dev, "Failed to add hcd\n");
2367                 goto clean_up;
2368         }
2369
2370         return 0;
2371
2372 clean_up:
2373         if (reg)
2374                 iounmap(reg);
2375
2376         return ret;
2377 }
2378
2379 static struct platform_driver r8a66597_driver = {
2380         .probe =        r8a66597_probe,
2381         .remove =       r8a66597_remove,
2382         .suspend =      r8a66597_suspend,
2383         .resume =       r8a66597_resume,
2384         .driver         = {
2385                 .name = (char *) hcd_name,
2386                 .owner  = THIS_MODULE,
2387         },
2388 };
2389
2390 static int __init r8a66597_init(void)
2391 {
2392         if (usb_disabled())
2393                 return -ENODEV;
2394
2395         printk(KERN_INFO KBUILD_MODNAME ": driver %s, %s\n", hcd_name,
2396                DRIVER_VERSION);
2397         return platform_driver_register(&r8a66597_driver);
2398 }
2399 module_init(r8a66597_init);
2400
2401 static void __exit r8a66597_cleanup(void)
2402 {
2403         platform_driver_unregister(&r8a66597_driver);
2404 }
2405 module_exit(r8a66597_cleanup);
2406