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USB: ohci-pnx4008: Remove unnecessary cast of return value of kzalloc
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / host / r8a66597-hcd.c
bloba7a7070c6e2ac9d9d8c10d815a0c38e3169775ca
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
39 #include <asm/io.h>
40 #include <asm/irq.h>
41 #include <asm/system.h>
42
43 #include "../core/hcd.h"
44 #include "r8a66597.h"
45
46 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
47 MODULE_LICENSE("GPL");
48 MODULE_AUTHOR("Yoshihiro Shimoda");
49
50 #define DRIVER_VERSION "29 May 2007"
51
52 static const char hcd_name[] = "r8a66597_hcd";
53
54 /* module parameters */
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(default=0)");
58 static unsigned short vif = LDRV;
59 module_param(vif, ushort, 0644);
60 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
61 static unsigned short endian = 0;
62 module_param(endian, ushort, 0644);
63 MODULE_PARM_DESC(endian, "data endian: big=256, little=0(default=0)");
64 static unsigned short irq_sense = INTL;
65 module_param(irq_sense, ushort, 0644);
66 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0(default=32)");
67
68 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
69 static int r8a66597_get_frame(struct usb_hcd *hcd);
70
71 /* this function must be called with interrupt disabled */
72 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
73 unsigned long reg)
74 {
75 u16 tmp;
76
77 tmp = r8a66597_read(r8a66597, INTENB0);
78 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
79 r8a66597_bset(r8a66597, 1 << pipenum, reg);
80 r8a66597_write(r8a66597, tmp, INTENB0);
81 }
82
83 /* this function must be called with interrupt disabled */
84 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
85 unsigned long reg)
86 {
87 u16 tmp;
88
89 tmp = r8a66597_read(r8a66597, INTENB0);
90 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
91 r8a66597_bclr(r8a66597, 1 << pipenum, reg);
92 r8a66597_write(r8a66597, tmp, INTENB0);
93 }
94
95 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
96 u16 usbspd, u8 upphub, u8 hubport, int port)
97 {
98 u16 val;
99 unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
100
101 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
102 r8a66597_write(r8a66597, val, devadd_reg);
103 }
104
105 static int enable_controller(struct r8a66597 *r8a66597)
106 {
107 u16 tmp;
108 int i = 0;
109
110 do {
111 r8a66597_write(r8a66597, USBE, SYSCFG0);
112 tmp = r8a66597_read(r8a66597, SYSCFG0);
113 if (i++ > 1000) {
114 err("register access fail.");
115 return -ENXIO;
116 }
117 } while ((tmp & USBE) != USBE);
118 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
119 r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
120
121 i = 0;
122 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
123 do {
124 msleep(1);
125 tmp = r8a66597_read(r8a66597, SYSCFG0);
126 if (i++ > 500) {
127 err("register access fail.");
128 return -ENXIO;
129 }
130 } while ((tmp & SCKE) != SCKE);
131
132 r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
133 r8a66597_bset(r8a66597, DRPD, SYSCFG1);
134
135 r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
136 r8a66597_bset(r8a66597, HSE, SYSCFG0);
137 r8a66597_bset(r8a66597, HSE, SYSCFG1);
138 r8a66597_bset(r8a66597, USBE, SYSCFG0);
139
140 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
141 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
142 r8a66597_bset(r8a66597, BRDY0, BRDYENB);
143 r8a66597_bset(r8a66597, BEMP0, BEMPENB);
144
145 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
146 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
147
148 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
149 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
150 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
151
152 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
153
154 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
155 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
156 r8a66597_bset(r8a66597, ATTCHE, INTENB1);
157 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
158 r8a66597_bset(r8a66597, ATTCHE, INTENB2);
159
160 return 0;
161 }
162
163 static void disable_controller(struct r8a66597 *r8a66597)
164 {
165 u16 tmp;
166
167 r8a66597_write(r8a66597, 0, INTENB0);
168 r8a66597_write(r8a66597, 0, INTENB1);
169 r8a66597_write(r8a66597, 0, INTENB2);
170 r8a66597_write(r8a66597, 0, INTSTS0);
171 r8a66597_write(r8a66597, 0, INTSTS1);
172 r8a66597_write(r8a66597, 0, INTSTS2);
173
174 r8a66597_port_power(r8a66597, 0, 0);
175 r8a66597_port_power(r8a66597, 1, 0);
176
177 do {
178 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
179 udelay(640);
180 } while (tmp == EDGESTS);
181
182 r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
183 r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
184 r8a66597_bclr(r8a66597, HSE, SYSCFG0);
185 r8a66597_bclr(r8a66597, HSE, SYSCFG1);
186
187 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
188 udelay(1);
189 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
190 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
191 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
192 }
193
194 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
195 struct usb_device *udev)
196 {
197 struct r8a66597_device *dev;
198
199 if (udev->parent && udev->parent->devnum != 1)
200 udev = udev->parent;
201
202 dev = dev_get_drvdata(&udev->dev);
203 if (dev)
204 return dev->address;
205 else
206 return 0;
207 }
208
209 static int is_child_device(char *devpath)
210 {
211 return (devpath[2] ? 1 : 0);
212 }
213
214 static int is_hub_limit(char *devpath)
215 {
216 return ((strlen(devpath) >= 4) ? 1 : 0);
217 }
218
219 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
220 {
221 if (root_port) {
222 *root_port = (devpath[0] & 0x0F) - 1;
223 if (*root_port >= R8A66597_MAX_ROOT_HUB)
224 err("illegal root port number");
225 }
226 if (hub_port)
227 *hub_port = devpath[2] & 0x0F;
228 }
229
230 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
231 {
232 u16 usbspd = 0;
233
234 switch (speed) {
235 case USB_SPEED_LOW:
236 usbspd = LSMODE;
237 break;
238 case USB_SPEED_FULL:
239 usbspd = FSMODE;
240 break;
241 case USB_SPEED_HIGH:
242 usbspd = HSMODE;
243 break;
244 default:
245 err("unknown speed");
246 break;
247 }
248
249 return usbspd;
250 }
251
252 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
253 {
254 int idx;
255
256 idx = address / 32;
257 r8a66597->child_connect_map[idx] |= 1 << (address % 32);
258 }
259
260 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
261 {
262 int idx;
263
264 idx = address / 32;
265 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
266 }
267
268 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
269 {
270 u16 pipenum = pipe->info.pipenum;
271 unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
272 unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
273 unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
274
275 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
276 dma_ch = R8A66597_PIPE_NO_DMA;
277
278 pipe->fifoaddr = fifoaddr[dma_ch];
279 pipe->fifosel = fifosel[dma_ch];
280 pipe->fifoctr = fifoctr[dma_ch];
281
282 if (pipenum == 0)
283 pipe->pipectr = DCPCTR;
284 else
285 pipe->pipectr = get_pipectr_addr(pipenum);
286
287 if (check_bulk_or_isoc(pipenum)) {
288 pipe->pipetre = get_pipetre_addr(pipenum);
289 pipe->pipetrn = get_pipetrn_addr(pipenum);
290 } else {
291 pipe->pipetre = 0;
292 pipe->pipetrn = 0;
293 }
294 }
295
296 static struct r8a66597_device *
297 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
298 {
299 if (usb_pipedevice(urb->pipe) == 0)
300 return &r8a66597->device0;
301
302 return dev_get_drvdata(&urb->dev->dev);
303 }
304
305 static int make_r8a66597_device(struct r8a66597 *r8a66597,
306 struct urb *urb, u8 addr)
307 {
308 struct r8a66597_device *dev;
309 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
310
311 dev = kzalloc(sizeof(struct r8a66597_device), GFP_KERNEL);
312 if (dev == NULL)
313 return -ENOMEM;
314
315 dev_set_drvdata(&urb->dev->dev, dev);
316 dev->udev = urb->dev;
317 dev->address = addr;
318 dev->usb_address = usb_address;
319 dev->state = USB_STATE_ADDRESS;
320 dev->ep_in_toggle = 0;
321 dev->ep_out_toggle = 0;
322 INIT_LIST_HEAD(&dev->device_list);
323 list_add_tail(&dev->device_list, &r8a66597->child_device);
324
325 get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
326 if (!is_child_device(urb->dev->devpath))
327 r8a66597->root_hub[dev->root_port].dev = dev;
328
329 set_devadd_reg(r8a66597, dev->address,
330 get_r8a66597_usb_speed(urb->dev->speed),
331 get_parent_r8a66597_address(r8a66597, urb->dev),
332 dev->hub_port, dev->root_port);
333
334 return 0;
335 }
336
337 /* this function must be called with interrupt disabled */
338 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
339 {
340 u8 addr; /* R8A66597's address */
341 struct r8a66597_device *dev;
342
343 if (is_hub_limit(urb->dev->devpath)) {
344 err("Externel hub limit reached.");
345 return 0;
346 }
347
348 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
349 if (dev && dev->state >= USB_STATE_ADDRESS)
350 return dev->address;
351
352 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
353 if (r8a66597->address_map & (1 << addr))
354 continue;
355
356 dbg("alloc_address: r8a66597_addr=%d", addr);
357 r8a66597->address_map |= 1 << addr;
358
359 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
360 return 0;
361
362 return addr;
363 }
364
365 err("cannot communicate with a USB device more than 10.(%x)",
366 r8a66597->address_map);
367
368 return 0;
369 }
370
371 /* this function must be called with interrupt disabled */
372 static void free_usb_address(struct r8a66597 *r8a66597,
373 struct r8a66597_device *dev)
374 {
375 int port;
376
377 if (!dev)
378 return;
379
380 dbg("free_addr: addr=%d", dev->address);
381
382 dev->state = USB_STATE_DEFAULT;
383 r8a66597->address_map &= ~(1 << dev->address);
384 dev->address = 0;
385 dev_set_drvdata(&dev->udev->dev, NULL);
386 list_del(&dev->device_list);
387 kfree(dev);
388
389 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
390 if (r8a66597->root_hub[port].dev == dev) {
391 r8a66597->root_hub[port].dev = NULL;
392 break;
393 }
394 }
395 }
396
397 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
398 u16 mask, u16 loop)
399 {
400 u16 tmp;
401 int i = 0;
402
403 do {
404 tmp = r8a66597_read(r8a66597, reg);
405 if (i++ > 1000000) {
406 err("register%lx, loop %x is timeout", reg, loop);
407 break;
408 }
409 ndelay(1);
410 } while ((tmp & mask) != loop);
411 }
412
413 /* this function must be called with interrupt disabled */
414 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
415 {
416 u16 tmp;
417
418 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
419 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
420 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
421 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
422 }
423
424 /* this function must be called with interrupt disabled */
425 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
426 {
427 u16 tmp;
428
429 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
430 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
431 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
432 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
433 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
434 }
435
436 /* this function must be called with interrupt disabled */
437 static void clear_all_buffer(struct r8a66597 *r8a66597,
438 struct r8a66597_pipe *pipe)
439 {
440 u16 tmp;
441
442 if (!pipe || pipe->info.pipenum == 0)
443 return;
444
445 pipe_stop(r8a66597, pipe);
446 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
447 tmp = r8a66597_read(r8a66597, pipe->pipectr);
448 tmp = r8a66597_read(r8a66597, pipe->pipectr);
449 tmp = r8a66597_read(r8a66597, pipe->pipectr);
450 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
451 }
452
453 /* this function must be called with interrupt disabled */
454 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
455 struct r8a66597_pipe *pipe, int toggle)
456 {
457 if (toggle)
458 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
459 else
460 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
461 }
462
463 /* this function must be called with interrupt disabled */
464 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
465 {
466 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
467 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
468 }
469
470 /* this function must be called with interrupt disabled */
471 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
472 struct r8a66597_pipe *pipe)
473 {
474 cfifo_change(r8a66597, 0);
475 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
476 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
477
478 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
479 pipe->fifosel);
480 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
481 }
482
483 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
484 {
485 struct r8a66597_pipe *pipe = hep->hcpriv;
486
487 if (usb_pipeendpoint(urb->pipe) == 0)
488 return 0;
489 else
490 return pipe->info.pipenum;
491 }
492
493 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
494 {
495 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
496
497 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
498 }
499
500 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
501 int urb_pipe)
502 {
503 if (!dev)
504 return NULL;
505
506 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
507 }
508
509 /* this function must be called with interrupt disabled */
510 static void pipe_toggle_set(struct r8a66597 *r8a66597,
511 struct r8a66597_pipe *pipe,
512 struct urb *urb, int set)
513 {
514 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
515 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
516 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
517
518 if (!toggle)
519 return;
520
521 if (set)
522 *toggle |= 1 << endpoint;
523 else
524 *toggle &= ~(1 << endpoint);
525 }
526
527 /* this function must be called with interrupt disabled */
528 static void pipe_toggle_save(struct r8a66597 *r8a66597,
529 struct r8a66597_pipe *pipe,
530 struct urb *urb)
531 {
532 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
533 pipe_toggle_set(r8a66597, pipe, urb, 1);
534 else
535 pipe_toggle_set(r8a66597, pipe, urb, 0);
536 }
537
538 /* this function must be called with interrupt disabled */
539 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
540 struct r8a66597_pipe *pipe,
541 struct urb *urb)
542 {
543 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
544 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
545 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
546
547 if (!toggle)
548 return;
549
550 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
551 }
552
553 /* this function must be called with interrupt disabled */
554 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
555 struct r8a66597_pipe_info *info)
556 {
557 u16 val = 0;
558
559 if (info->pipenum == 0)
560 return;
561
562 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
563 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
564 r8a66597_write(r8a66597, info->pipenum, PIPESEL);
565 if (!info->dir_in)
566 val |= R8A66597_DIR;
567 if (info->type == R8A66597_BULK && info->dir_in)
568 val |= R8A66597_DBLB | R8A66597_SHTNAK;
569 val |= info->type | info->epnum;
570 r8a66597_write(r8a66597, val, PIPECFG);
571
572 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
573 PIPEBUF);
574 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
575 PIPEMAXP);
576 if (info->interval)
577 info->interval--;
578 r8a66597_write(r8a66597, info->interval, PIPEPERI);
579 }
580
581
582
583 /* this function must be called with interrupt disabled */
584 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
585 {
586 struct r8a66597_pipe_info *info;
587 struct urb *urb = td->urb;
588
589 if (td->pipenum > 0) {
590 info = &td->pipe->info;
591 cfifo_change(r8a66597, 0);
592 pipe_buffer_setting(r8a66597, info);
593
594 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
595 usb_pipeout(urb->pipe)) &&
596 !usb_pipecontrol(urb->pipe)) {
597 r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
598 pipe_toggle_set(r8a66597, td->pipe, urb, 0);
599 clear_all_buffer(r8a66597, td->pipe);
600 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
601 usb_pipeout(urb->pipe), 1);
602 }
603 pipe_toggle_restore(r8a66597, td->pipe, urb);
604 }
605 }
606
607 /* this function must be called with interrupt disabled */
608 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
609 struct usb_endpoint_descriptor *ep)
610 {
611 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
612
613 memset(array, 0, sizeof(array));
614 switch(ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
615 case USB_ENDPOINT_XFER_BULK:
616 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
617 array[i++] = 4;
618 else {
619 array[i++] = 3;
620 array[i++] = 5;
621 }
622 break;
623 case USB_ENDPOINT_XFER_INT:
624 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
625 array[i++] = 6;
626 array[i++] = 7;
627 array[i++] = 8;
628 } else
629 array[i++] = 9;
630 break;
631 case USB_ENDPOINT_XFER_ISOC:
632 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
633 array[i++] = 2;
634 else
635 array[i++] = 1;
636 break;
637 default:
638 err("Illegal type");
639 return 0;
640 }
641
642 i = 1;
643 min = array[0];
644 while (array[i] != 0) {
645 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
646 min = array[i];
647 i++;
648 }
649
650 return min;
651 }
652
653 static u16 get_r8a66597_type(__u8 type)
654 {
655 u16 r8a66597_type;
656
657 switch(type) {
658 case USB_ENDPOINT_XFER_BULK:
659 r8a66597_type = R8A66597_BULK;
660 break;
661 case USB_ENDPOINT_XFER_INT:
662 r8a66597_type = R8A66597_INT;
663 break;
664 case USB_ENDPOINT_XFER_ISOC:
665 r8a66597_type = R8A66597_ISO;
666 break;
667 default:
668 err("Illegal type");
669 r8a66597_type = 0x0000;
670 break;
671 }
672
673 return r8a66597_type;
674 }
675
676 static u16 get_bufnum(u16 pipenum)
677 {
678 u16 bufnum = 0;
679
680 if (pipenum == 0)
681 bufnum = 0;
682 else if (check_bulk_or_isoc(pipenum))
683 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
684 else if (check_interrupt(pipenum))
685 bufnum = 4 + (pipenum - 6);
686 else
687 err("Illegal pipenum (%d)", pipenum);
688
689 return bufnum;
690 }
691
692 static u16 get_buf_bsize(u16 pipenum)
693 {
694 u16 buf_bsize = 0;
695
696 if (pipenum == 0)
697 buf_bsize = 3;
698 else if (check_bulk_or_isoc(pipenum))
699 buf_bsize = R8A66597_BUF_BSIZE - 1;
700 else if (check_interrupt(pipenum))
701 buf_bsize = 0;
702 else
703 err("Illegal pipenum (%d)", pipenum);
704
705 return buf_bsize;
706 }
707
708 /* this function must be called with interrupt disabled */
709 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
710 struct r8a66597_device *dev,
711 struct r8a66597_pipe *pipe,
712 struct urb *urb)
713 {
714 int i;
715 struct r8a66597_pipe_info *info = &pipe->info;
716
717 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
718 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
719 if ((r8a66597->dma_map & (1 << i)) != 0)
720 continue;
721
722 info("address %d, EndpointAddress 0x%02x use DMA FIFO",
723 usb_pipedevice(urb->pipe),
724 info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
725 : info->epnum);
726
727 r8a66597->dma_map |= 1 << i;
728 dev->dma_map |= 1 << i;
729 set_pipe_reg_addr(pipe, i);
730
731 cfifo_change(r8a66597, 0);
732 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
733 MBW | CURPIPE, pipe->fifosel);
734
735 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
736 pipe->info.pipenum);
737 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
738 break;
739 }
740 }
741 }
742
743 /* this function must be called with interrupt disabled */
744 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
745 struct usb_host_endpoint *hep,
746 struct r8a66597_pipe_info *info)
747 {
748 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
749 struct r8a66597_pipe *pipe = hep->hcpriv;
750
751 dbg("enable_pipe:");
752
753 pipe->info = *info;
754 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
755 r8a66597->pipe_cnt[pipe->info.pipenum]++;
756 dev->pipe_cnt[pipe->info.pipenum]++;
757
758 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
759 }
760
761 /* this function must be called with interrupt disabled */
762 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
763 {
764 struct r8a66597_td *td, *next;
765 struct urb *urb;
766 struct list_head *list = &r8a66597->pipe_queue[pipenum];
767
768 if (list_empty(list))
769 return;
770
771 list_for_each_entry_safe(td, next, list, queue) {
772 if (!td)
773 continue;
774 if (td->address != address)
775 continue;
776
777 urb = td->urb;
778 list_del(&td->queue);
779 kfree(td);
780
781 if (urb) {
782 urb->status = -ENODEV;
783 urb->hcpriv = NULL;
784 spin_unlock(&r8a66597->lock);
785 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb);
786 spin_lock(&r8a66597->lock);
787 }
788 break;
789 }
790 }
791
792 /* this function must be called with interrupt disabled */
793 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
794 struct r8a66597_device *dev)
795 {
796 int check_ep0 = 0;
797 u16 pipenum;
798
799 if (!dev)
800 return;
801
802 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
803 if (!dev->pipe_cnt[pipenum])
804 continue;
805
806 if (!check_ep0) {
807 check_ep0 = 1;
808 force_dequeue(r8a66597, 0, dev->address);
809 }
810
811 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
812 dev->pipe_cnt[pipenum] = 0;
813 force_dequeue(r8a66597, pipenum, dev->address);
814 }
815
816 dbg("disable_pipe");
817
818 r8a66597->dma_map &= ~(dev->dma_map);
819 dev->dma_map = 0;
820 }
821
822 /* this function must be called with interrupt disabled */
823 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
824 struct usb_host_endpoint *hep,
825 struct usb_endpoint_descriptor *ep)
826 {
827 struct r8a66597_pipe_info info;
828
829 info.pipenum = get_empty_pipenum(r8a66597, ep);
830 info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
831 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
832 info.maxpacket = ep->wMaxPacketSize;
833 info.type = get_r8a66597_type(ep->bmAttributes
834 & USB_ENDPOINT_XFERTYPE_MASK);
835 info.bufnum = get_bufnum(info.pipenum);
836 info.buf_bsize = get_buf_bsize(info.pipenum);
837 info.interval = ep->bInterval;
838 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
839 info.dir_in = 1;
840 else
841 info.dir_in = 0;
842
843 enable_r8a66597_pipe(r8a66597, urb, hep, &info);
844 }
845
846 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
847 {
848 struct r8a66597_device *dev;
849
850 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
851 dev->state = USB_STATE_CONFIGURED;
852 }
853
854 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
855 u16 pipenum)
856 {
857 if (pipenum == 0 && usb_pipeout(urb->pipe))
858 enable_irq_empty(r8a66597, pipenum);
859 else
860 enable_irq_ready(r8a66597, pipenum);
861
862 if (!usb_pipeisoc(urb->pipe))
863 enable_irq_nrdy(r8a66597, pipenum);
864 }
865
866 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
867 {
868 disable_irq_ready(r8a66597, pipenum);
869 disable_irq_nrdy(r8a66597, pipenum);
870 }
871
872 /* this function must be called with interrupt disabled */
873 static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
874 {
875 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
876 | (1 << USB_PORT_FEAT_C_CONNECTION);
877 r8a66597_write(r8a66597, (u16)~DTCH, get_intsts_reg(port));
878 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
879 }
880
881 /* this function must be called with interrupt disabled */
882 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
883 {
884 u16 speed = get_rh_usb_speed(r8a66597, port);
885 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
886
887 if (speed == HSMODE)
888 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
889 else if (speed == LSMODE)
890 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
891
892 rh->port &= ~(1 << USB_PORT_FEAT_RESET);
893 rh->port |= 1 << USB_PORT_FEAT_ENABLE;
894 }
895
896 /* this function must be called with interrupt disabled */
897 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
898 {
899 struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
900
901 r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
902 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
903
904 disable_r8a66597_pipe_all(r8a66597, dev);
905 free_usb_address(r8a66597, dev);
906
907 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
908 }
909
910 /* this function must be called with interrupt disabled */
911 static void prepare_setup_packet(struct r8a66597 *r8a66597,
912 struct r8a66597_td *td)
913 {
914 int i;
915 u16 *p = (u16 *)td->urb->setup_packet;
916 unsigned long setup_addr = USBREQ;
917
918 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
919 DCPMAXP);
920 r8a66597_write(r8a66597, (u16)~(SIGN | SACK), INTSTS1);
921
922 for (i = 0; i < 4; i++) {
923 r8a66597_write(r8a66597, p[i], setup_addr);
924 setup_addr += 2;
925 }
926 r8a66597_write(r8a66597, SUREQ, DCPCTR);
927 }
928
929 /* this function must be called with interrupt disabled */
930 static void prepare_packet_read(struct r8a66597 *r8a66597,
931 struct r8a66597_td *td)
932 {
933 struct urb *urb = td->urb;
934
935 if (usb_pipecontrol(urb->pipe)) {
936 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
937 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
938 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
939 if (urb->actual_length == 0) {
940 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
941 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
942 }
943 pipe_irq_disable(r8a66597, td->pipenum);
944 pipe_start(r8a66597, td->pipe);
945 pipe_irq_enable(r8a66597, urb, td->pipenum);
946 } else {
947 if (urb->actual_length == 0) {
948 pipe_irq_disable(r8a66597, td->pipenum);
949 pipe_setting(r8a66597, td);
950 pipe_stop(r8a66597, td->pipe);
951 r8a66597_write(r8a66597, (u16)~(1 << td->pipenum),
952 BRDYSTS);
953
954 if (td->pipe->pipetre) {
955 r8a66597_write(r8a66597, TRCLR,
956 td->pipe->pipetre);
957 r8a66597_write(r8a66597,
958 (urb->transfer_buffer_length
959 + td->maxpacket - 1)
960 / td->maxpacket,
961 td->pipe->pipetrn);
962 r8a66597_bset(r8a66597, TRENB,
963 td->pipe->pipetre);
964 }
965
966 pipe_start(r8a66597, td->pipe);
967 pipe_irq_enable(r8a66597, urb, td->pipenum);
968 }
969 }
970 }
971
972 /* this function must be called with interrupt disabled */
973 static void prepare_packet_write(struct r8a66597 *r8a66597,
974 struct r8a66597_td *td)
975 {
976 u16 tmp;
977 struct urb *urb = td->urb;
978
979 if (usb_pipecontrol(urb->pipe)) {
980 pipe_stop(r8a66597, td->pipe);
981 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
982 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
983 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
984 if (urb->actual_length == 0) {
985 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
986 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
987 }
988 } else {
989 if (urb->actual_length == 0)
990 pipe_setting(r8a66597, td);
991 if (td->pipe->pipetre)
992 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
993 }
994 r8a66597_write(r8a66597, (u16)~(1 << td->pipenum), BRDYSTS);
995
996 fifo_change_from_pipe(r8a66597, td->pipe);
997 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
998 if (unlikely((tmp & FRDY) == 0))
999 pipe_irq_enable(r8a66597, urb, td->pipenum);
1000 else
1001 packet_write(r8a66597, td->pipenum);
1002 pipe_start(r8a66597, td->pipe);
1003 }
1004
1005 /* this function must be called with interrupt disabled */
1006 static void prepare_status_packet(struct r8a66597 *r8a66597,
1007 struct r8a66597_td *td)
1008 {
1009 struct urb *urb = td->urb;
1010
1011 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1012
1013 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1014 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1015 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1016 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1017 r8a66597_write(r8a66597, BVAL | BCLR, CFIFOCTR);
1018 r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
1019 enable_irq_empty(r8a66597, 0);
1020 } else {
1021 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1022 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1023 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1024 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1025 r8a66597_write(r8a66597, (u16)~BRDY0, BRDYSTS);
1026 r8a66597_write(r8a66597, (u16)~BEMP0, BEMPSTS);
1027 enable_irq_ready(r8a66597, 0);
1028 }
1029 enable_irq_nrdy(r8a66597, 0);
1030 pipe_start(r8a66597, td->pipe);
1031 }
1032
1033 /* this function must be called with interrupt disabled */
1034 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1035 {
1036 BUG_ON(!td);
1037
1038 switch (td->type) {
1039 case USB_PID_SETUP:
1040 if (td->urb->setup_packet[1] == USB_REQ_SET_ADDRESS) {
1041 td->set_address = 1;
1042 td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1043 td->urb);
1044 if (td->urb->setup_packet[2] == 0)
1045 return -EPIPE;
1046 }
1047 prepare_setup_packet(r8a66597, td);
1048 break;
1049 case USB_PID_IN:
1050 prepare_packet_read(r8a66597, td);
1051 break;
1052 case USB_PID_OUT:
1053 prepare_packet_write(r8a66597, td);
1054 break;
1055 case USB_PID_ACK:
1056 prepare_status_packet(r8a66597, td);
1057 break;
1058 default:
1059 err("invalid type.");
1060 break;
1061 }
1062
1063 return 0;
1064 }
1065
1066 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1067 {
1068 if (usb_pipeisoc(urb->pipe)) {
1069 if (urb->number_of_packets == td->iso_cnt)
1070 return 1;
1071 }
1072
1073 /* control or bulk or interrupt */
1074 if ((urb->transfer_buffer_length <= urb->actual_length) ||
1075 (td->short_packet) || (td->zero_packet))
1076 return 1;
1077
1078 return 0;
1079 }
1080
1081 /* this function must be called with interrupt disabled */
1082 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1083 {
1084 unsigned long time;
1085
1086 BUG_ON(!td);
1087
1088 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1089 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1090 r8a66597->timeout_map |= 1 << td->pipenum;
1091 switch (usb_pipetype(td->urb->pipe)) {
1092 case PIPE_INTERRUPT:
1093 case PIPE_ISOCHRONOUS:
1094 time = 30;
1095 break;
1096 default:
1097 time = 300;
1098 break;
1099 }
1100
1101 mod_timer(&r8a66597->td_timer[td->pipenum],
1102 jiffies + msecs_to_jiffies(time));
1103 }
1104 }
1105
1106 /* this function must be called with interrupt disabled */
1107 static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1108 u16 pipenum, struct urb *urb)
1109 {
1110 int restart = 0;
1111 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1112
1113 r8a66597->timeout_map &= ~(1 << pipenum);
1114
1115 if (likely(td)) {
1116 if (td->set_address && urb->status != 0)
1117 r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1118
1119 pipe_toggle_save(r8a66597, td->pipe, urb);
1120 list_del(&td->queue);
1121 kfree(td);
1122 }
1123
1124 if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1125 restart = 1;
1126
1127 if (likely(urb)) {
1128 if (usb_pipeisoc(urb->pipe))
1129 urb->start_frame = r8a66597_get_frame(hcd);
1130
1131 urb->hcpriv = NULL;
1132 spin_unlock(&r8a66597->lock);
1133 usb_hcd_giveback_urb(hcd, urb);
1134 spin_lock(&r8a66597->lock);
1135 }
1136
1137 if (restart) {
1138 td = r8a66597_get_td(r8a66597, pipenum);
1139 if (unlikely(!td))
1140 return;
1141
1142 start_transfer(r8a66597, td);
1143 set_td_timer(r8a66597, td);
1144 }
1145 }
1146
1147 /* this function must be called with interrupt disabled */
1148 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1149 u16 pipenum, struct urb *urb)
1150 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1151 {
1152 done(r8a66597, td, pipenum, urb);
1153 }
1154
1155 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1156 {
1157 u16 tmp;
1158 int rcv_len, bufsize, urb_len, size;
1159 u16 *buf;
1160 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1161 struct urb *urb;
1162 int finish = 0;
1163
1164 if (unlikely(!td))
1165 return;
1166 urb = td->urb;
1167
1168 fifo_change_from_pipe(r8a66597, td->pipe);
1169 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1170 if (unlikely((tmp & FRDY) == 0)) {
1171 urb->status = -EPIPE;
1172 pipe_stop(r8a66597, td->pipe);
1173 pipe_irq_disable(r8a66597, pipenum);
1174 err("in fifo not ready (%d)", pipenum);
1175 finish_request(r8a66597, td, pipenum, td->urb);
1176 return;
1177 }
1178
1179 /* prepare parameters */
1180 rcv_len = tmp & DTLN;
1181 bufsize = td->maxpacket;
1182 if (usb_pipeisoc(urb->pipe)) {
1183 buf = (u16 *)(urb->transfer_buffer +
1184 urb->iso_frame_desc[td->iso_cnt].offset);
1185 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1186 } else {
1187 buf = (void *)urb->transfer_buffer + urb->actual_length;
1188 urb_len = urb->transfer_buffer_length - urb->actual_length;
1189 }
1190 if (rcv_len < bufsize)
1191 size = min(rcv_len, urb_len);
1192 else
1193 size = min(bufsize, urb_len);
1194
1195 /* update parameters */
1196 urb->actual_length += size;
1197 if (rcv_len == 0)
1198 td->zero_packet = 1;
1199 if ((size % td->maxpacket) > 0) {
1200 td->short_packet = 1;
1201 if (urb->transfer_buffer_length != urb->actual_length &&
1202 urb->transfer_flags & URB_SHORT_NOT_OK)
1203 td->urb->status = -EREMOTEIO;
1204 }
1205 if (usb_pipeisoc(urb->pipe)) {
1206 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1207 urb->iso_frame_desc[td->iso_cnt].status = 0;
1208 td->iso_cnt++;
1209 }
1210
1211 /* check transfer finish */
1212 if (check_transfer_finish(td, urb)) {
1213 pipe_stop(r8a66597, td->pipe);
1214 pipe_irq_disable(r8a66597, pipenum);
1215 finish = 1;
1216 }
1217
1218 /* read fifo */
1219 if (urb->transfer_buffer) {
1220 if (size == 0)
1221 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1222 else
1223 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1224 buf, size);
1225 }
1226
1227 if (finish && pipenum != 0) {
1228 if (td->urb->status == -EINPROGRESS)
1229 td->urb->status = 0;
1230 finish_request(r8a66597, td, pipenum, urb);
1231 }
1232 }
1233
1234 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1235 {
1236 u16 tmp;
1237 int bufsize, size;
1238 u16 *buf;
1239 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1240 struct urb *urb;
1241
1242 if (unlikely(!td))
1243 return;
1244 urb = td->urb;
1245
1246 fifo_change_from_pipe(r8a66597, td->pipe);
1247 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1248 if (unlikely((tmp & FRDY) == 0)) {
1249 urb->status = -EPIPE;
1250 pipe_stop(r8a66597, td->pipe);
1251 pipe_irq_disable(r8a66597, pipenum);
1252 err("out write fifo not ready. (%d)", pipenum);
1253 finish_request(r8a66597, td, pipenum, td->urb);
1254 return;
1255 }
1256
1257 /* prepare parameters */
1258 bufsize = td->maxpacket;
1259 if (usb_pipeisoc(urb->pipe)) {
1260 buf = (u16 *)(urb->transfer_buffer +
1261 urb->iso_frame_desc[td->iso_cnt].offset);
1262 size = min(bufsize,
1263 (int)urb->iso_frame_desc[td->iso_cnt].length);
1264 } else {
1265 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1266 size = min((int)bufsize,
1267 urb->transfer_buffer_length - urb->actual_length);
1268 }
1269
1270 /* write fifo */
1271 if (pipenum > 0)
1272 r8a66597_write(r8a66597, (u16)~(1 << pipenum), BEMPSTS);
1273 if (urb->transfer_buffer) {
1274 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1275 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1276 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1277 }
1278
1279 /* update parameters */
1280 urb->actual_length += size;
1281 if (usb_pipeisoc(urb->pipe)) {
1282 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1283 urb->iso_frame_desc[td->iso_cnt].status = 0;
1284 td->iso_cnt++;
1285 }
1286
1287 /* check transfer finish */
1288 if (check_transfer_finish(td, urb)) {
1289 disable_irq_ready(r8a66597, pipenum);
1290 enable_irq_empty(r8a66597, pipenum);
1291 if (!usb_pipeisoc(urb->pipe))
1292 enable_irq_nrdy(r8a66597, pipenum);
1293 } else
1294 pipe_irq_enable(r8a66597, urb, pipenum);
1295 }
1296
1297
1298 static void check_next_phase(struct r8a66597 *r8a66597)
1299 {
1300 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1301 struct urb *urb;
1302 u8 finish = 0;
1303
1304 if (unlikely(!td))
1305 return;
1306 urb = td->urb;
1307
1308 switch (td->type) {
1309 case USB_PID_IN:
1310 case USB_PID_OUT:
1311 if (urb->status != -EINPROGRESS) {
1312 finish = 1;
1313 break;
1314 }
1315 if (check_transfer_finish(td, urb))
1316 td->type = USB_PID_ACK;
1317 break;
1318 case USB_PID_SETUP:
1319 if (urb->status != -EINPROGRESS)
1320 finish = 1;
1321 else if (urb->transfer_buffer_length == urb->actual_length) {
1322 td->type = USB_PID_ACK;
1323 urb->status = 0;
1324 } else if (usb_pipeout(urb->pipe))
1325 td->type = USB_PID_OUT;
1326 else
1327 td->type = USB_PID_IN;
1328 break;
1329 case USB_PID_ACK:
1330 finish = 1;
1331 if (urb->status == -EINPROGRESS)
1332 urb->status = 0;
1333 break;
1334 }
1335
1336 if (finish)
1337 finish_request(r8a66597, td, 0, urb);
1338 else
1339 start_transfer(r8a66597, td);
1340 }
1341
1342 static void set_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1343 {
1344 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1345
1346 if (td && td->urb) {
1347 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1348
1349 if (pid == PID_NAK)
1350 td->urb->status = -ECONNRESET;
1351 else
1352 td->urb->status = -EPIPE;
1353 }
1354 }
1355
1356 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1357 {
1358 u16 check;
1359 u16 pipenum;
1360 u16 mask;
1361 struct r8a66597_td *td;
1362
1363 mask = r8a66597_read(r8a66597, BRDYSTS)
1364 & r8a66597_read(r8a66597, BRDYENB);
1365 r8a66597_write(r8a66597, (u16)~mask, BRDYSTS);
1366 if (mask & BRDY0) {
1367 td = r8a66597_get_td(r8a66597, 0);
1368 if (td && td->type == USB_PID_IN)
1369 packet_read(r8a66597, 0);
1370 else
1371 pipe_irq_disable(r8a66597, 0);
1372 check_next_phase(r8a66597);
1373 }
1374
1375 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1376 check = 1 << pipenum;
1377 if (mask & check) {
1378 td = r8a66597_get_td(r8a66597, pipenum);
1379 if (unlikely(!td))
1380 continue;
1381
1382 if (td->type == USB_PID_IN)
1383 packet_read(r8a66597, pipenum);
1384 else if (td->type == USB_PID_OUT)
1385 packet_write(r8a66597, pipenum);
1386 }
1387 }
1388 }
1389
1390 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1391 {
1392 u16 tmp;
1393 u16 check;
1394 u16 pipenum;
1395 u16 mask;
1396 struct r8a66597_td *td;
1397
1398 mask = r8a66597_read(r8a66597, BEMPSTS)
1399 & r8a66597_read(r8a66597, BEMPENB);
1400 r8a66597_write(r8a66597, (u16)~mask, BEMPSTS);
1401 if (mask & BEMP0) {
1402 cfifo_change(r8a66597, 0);
1403 td = r8a66597_get_td(r8a66597, 0);
1404 if (td && td->type != USB_PID_OUT)
1405 disable_irq_empty(r8a66597, 0);
1406 check_next_phase(r8a66597);
1407 }
1408
1409 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1410 check = 1 << pipenum;
1411 if (mask & check) {
1412 struct r8a66597_td *td;
1413 td = r8a66597_get_td(r8a66597, pipenum);
1414 if (unlikely(!td))
1415 continue;
1416
1417 tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1418 if ((tmp & INBUFM) == 0) {
1419 disable_irq_empty(r8a66597, pipenum);
1420 pipe_irq_disable(r8a66597, pipenum);
1421 if (td->urb->status == -EINPROGRESS)
1422 td->urb->status = 0;
1423 finish_request(r8a66597, td, pipenum, td->urb);
1424 }
1425 }
1426 }
1427 }
1428
1429 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1430 {
1431 u16 check;
1432 u16 pipenum;
1433 u16 mask;
1434
1435 mask = r8a66597_read(r8a66597, NRDYSTS)
1436 & r8a66597_read(r8a66597, NRDYENB);
1437 r8a66597_write(r8a66597, (u16)~mask, NRDYSTS);
1438 if (mask & NRDY0) {
1439 cfifo_change(r8a66597, 0);
1440 set_urb_error(r8a66597, 0);
1441 pipe_irq_disable(r8a66597, 0);
1442 check_next_phase(r8a66597);
1443 }
1444
1445 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1446 check = 1 << pipenum;
1447 if (mask & check) {
1448 struct r8a66597_td *td;
1449 td = r8a66597_get_td(r8a66597, pipenum);
1450 if (unlikely(!td))
1451 continue;
1452
1453 set_urb_error(r8a66597, pipenum);
1454 pipe_irq_disable(r8a66597, pipenum);
1455 pipe_stop(r8a66597, td->pipe);
1456 finish_request(r8a66597, td, pipenum, td->urb);
1457 }
1458 }
1459 }
1460
1461 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1462 {
1463 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1464
1465 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1466 rh->scount = R8A66597_MAX_SAMPLING;
1467 mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
1468 }
1469
1470 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1471 {
1472 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1473 u16 intsts0, intsts1, intsts2;
1474 u16 intenb0, intenb1, intenb2;
1475 u16 mask0, mask1, mask2;
1476
1477 spin_lock(&r8a66597->lock);
1478
1479 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1480 intsts1 = r8a66597_read(r8a66597, INTSTS1);
1481 intsts2 = r8a66597_read(r8a66597, INTSTS2);
1482 intenb0 = r8a66597_read(r8a66597, INTENB0);
1483 intenb1 = r8a66597_read(r8a66597, INTENB1);
1484 intenb2 = r8a66597_read(r8a66597, INTENB2);
1485
1486 mask2 = intsts2 & intenb2;
1487 mask1 = intsts1 & intenb1;
1488 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1489 if (mask2) {
1490 if (mask2 & ATTCH) {
1491 r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS2);
1492 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1493
1494 /* start usb bus sampling */
1495 start_root_hub_sampling(r8a66597, 1);
1496 }
1497 if (mask2 & DTCH) {
1498 r8a66597_write(r8a66597, (u16)~DTCH, INTSTS2);
1499 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1500 r8a66597_usb_disconnect(r8a66597, 1);
1501 }
1502 }
1503
1504 if (mask1) {
1505 if (mask1 & ATTCH) {
1506 r8a66597_write(r8a66597, (u16)~ATTCH, INTSTS1);
1507 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1508
1509 /* start usb bus sampling */
1510 start_root_hub_sampling(r8a66597, 0);
1511 }
1512 if (mask1 & DTCH) {
1513 r8a66597_write(r8a66597, (u16)~DTCH, INTSTS1);
1514 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1515 r8a66597_usb_disconnect(r8a66597, 0);
1516 }
1517 if (mask1 & SIGN) {
1518 r8a66597_write(r8a66597, (u16)~SIGN, INTSTS1);
1519 set_urb_error(r8a66597, 0);
1520 check_next_phase(r8a66597);
1521 }
1522 if (mask1 & SACK) {
1523 r8a66597_write(r8a66597, (u16)~SACK, INTSTS1);
1524 check_next_phase(r8a66597);
1525 }
1526 }
1527 if (mask0) {
1528 if (mask0 & BRDY)
1529 irq_pipe_ready(r8a66597);
1530 if (mask0 & BEMP)
1531 irq_pipe_empty(r8a66597);
1532 if (mask0 & NRDY)
1533 irq_pipe_nrdy(r8a66597);
1534 }
1535
1536 spin_unlock(&r8a66597->lock);
1537 return IRQ_HANDLED;
1538 }
1539
1540 /* this function must be called with interrupt disabled */
1541 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1542 {
1543 u16 tmp;
1544 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1545
1546 if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1547 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1548
1549 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1550 if ((tmp & USBRST) == USBRST) {
1551 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1552 dvstctr_reg);
1553 mod_timer(&r8a66597->rh_timer,
1554 jiffies + msecs_to_jiffies(50));
1555 } else
1556 r8a66597_usb_connect(r8a66597, port);
1557 }
1558
1559 if (rh->scount > 0) {
1560 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1561 if (tmp == rh->old_syssts) {
1562 rh->scount--;
1563 if (rh->scount == 0) {
1564 if (tmp == FS_JSTS) {
1565 r8a66597_bset(r8a66597, HSE,
1566 get_syscfg_reg(port));
1567 r8a66597_usb_preconnect(r8a66597, port);
1568 } else if (tmp == LS_JSTS) {
1569 r8a66597_bclr(r8a66597, HSE,
1570 get_syscfg_reg(port));
1571 r8a66597_usb_preconnect(r8a66597, port);
1572 } else if (tmp == SE0)
1573 r8a66597_bset(r8a66597, ATTCHE,
1574 get_intenb_reg(port));
1575 } else {
1576 mod_timer(&r8a66597->rh_timer,
1577 jiffies + msecs_to_jiffies(50));
1578 }
1579 } else {
1580 rh->scount = R8A66597_MAX_SAMPLING;
1581 rh->old_syssts = tmp;
1582 mod_timer(&r8a66597->rh_timer,
1583 jiffies + msecs_to_jiffies(50));
1584 }
1585 }
1586 }
1587
1588 static void r8a66597_td_timer(unsigned long _r8a66597)
1589 {
1590 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1591 unsigned long flags;
1592 u16 pipenum;
1593 struct r8a66597_td *td, *new_td = NULL;
1594 struct r8a66597_pipe *pipe;
1595
1596 spin_lock_irqsave(&r8a66597->lock, flags);
1597 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1598 if (!(r8a66597->timeout_map & (1 << pipenum)))
1599 continue;
1600 if (timer_pending(&r8a66597->td_timer[pipenum]))
1601 continue;
1602
1603 td = r8a66597_get_td(r8a66597, pipenum);
1604 if (!td) {
1605 r8a66597->timeout_map &= ~(1 << pipenum);
1606 continue;
1607 }
1608
1609 if (td->urb->actual_length) {
1610 set_td_timer(r8a66597, td);
1611 break;
1612 }
1613
1614 pipe = td->pipe;
1615 pipe_stop(r8a66597, pipe);
1616
1617 new_td = td;
1618 do {
1619 list_move_tail(&new_td->queue,
1620 &r8a66597->pipe_queue[pipenum]);
1621 new_td = r8a66597_get_td(r8a66597, pipenum);
1622 if (!new_td) {
1623 new_td = td;
1624 break;
1625 }
1626 } while (td != new_td && td->address == new_td->address);
1627
1628 start_transfer(r8a66597, new_td);
1629
1630 if (td == new_td)
1631 r8a66597->timeout_map &= ~(1 << pipenum);
1632 else
1633 set_td_timer(r8a66597, new_td);
1634 break;
1635 }
1636 spin_unlock_irqrestore(&r8a66597->lock, flags);
1637 }
1638
1639 static void r8a66597_timer(unsigned long _r8a66597)
1640 {
1641 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1642 unsigned long flags;
1643
1644 spin_lock_irqsave(&r8a66597->lock, flags);
1645
1646 r8a66597_root_hub_control(r8a66597, 0);
1647 r8a66597_root_hub_control(r8a66597, 1);
1648
1649 spin_unlock_irqrestore(&r8a66597->lock, flags);
1650 }
1651
1652 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1653 {
1654 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1655
1656 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1657 (urb->dev->state == USB_STATE_CONFIGURED))
1658 return 1;
1659 else
1660 return 0;
1661 }
1662
1663 static int r8a66597_start(struct usb_hcd *hcd)
1664 {
1665 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1666 int ret;
1667
1668 hcd->state = HC_STATE_RUNNING;
1669 if ((ret = enable_controller(r8a66597)) < 0)
1670 return ret;
1671
1672 return 0;
1673 }
1674
1675 static void r8a66597_stop(struct usb_hcd *hcd)
1676 {
1677 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1678
1679 disable_controller(r8a66597);
1680 }
1681
1682 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1683 {
1684 unsigned int usb_address = usb_pipedevice(urb->pipe);
1685 u16 root_port, hub_port;
1686
1687 if (usb_address == 0) {
1688 get_port_number(urb->dev->devpath,
1689 &root_port, &hub_port);
1690 set_devadd_reg(r8a66597, 0,
1691 get_r8a66597_usb_speed(urb->dev->speed),
1692 get_parent_r8a66597_address(r8a66597, urb->dev),
1693 hub_port, root_port);
1694 }
1695 }
1696
1697 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1698 struct urb *urb,
1699 struct usb_host_endpoint *hep,
1700 gfp_t mem_flags)
1701 {
1702 struct r8a66597_td *td;
1703 u16 pipenum;
1704
1705 td = kzalloc(sizeof(struct r8a66597_td), mem_flags);
1706 if (td == NULL)
1707 return NULL;
1708
1709 pipenum = r8a66597_get_pipenum(urb, hep);
1710 td->pipenum = pipenum;
1711 td->pipe = hep->hcpriv;
1712 td->urb = urb;
1713 td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1714 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1715 !usb_pipein(urb->pipe));
1716 if (usb_pipecontrol(urb->pipe))
1717 td->type = USB_PID_SETUP;
1718 else if (usb_pipein(urb->pipe))
1719 td->type = USB_PID_IN;
1720 else
1721 td->type = USB_PID_OUT;
1722 INIT_LIST_HEAD(&td->queue);
1723
1724 return td;
1725 }
1726
1727 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1728 struct usb_host_endpoint *hep,
1729 struct urb *urb,
1730 gfp_t mem_flags)
1731 {
1732 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1733 struct r8a66597_td *td = NULL;
1734 int ret = 0, request = 0;
1735 unsigned long flags;
1736
1737 spin_lock_irqsave(&r8a66597->lock, flags);
1738 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1739 ret = -ENODEV;
1740 goto error;
1741 }
1742
1743 if (!hep->hcpriv) {
1744 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe), mem_flags);
1745 if (!hep->hcpriv) {
1746 ret = -ENOMEM;
1747 goto error;
1748 }
1749 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1750 if (usb_pipeendpoint(urb->pipe))
1751 init_pipe_info(r8a66597, urb, hep, &hep->desc);
1752 }
1753
1754 if (unlikely(check_pipe_config(r8a66597, urb)))
1755 init_pipe_config(r8a66597, urb);
1756
1757 set_address_zero(r8a66597, urb);
1758 td = r8a66597_make_td(r8a66597, urb, hep, mem_flags);
1759 if (td == NULL) {
1760 ret = -ENOMEM;
1761 goto error;
1762 }
1763 if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1764 request = 1;
1765 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1766
1767 spin_lock(&urb->lock);
1768 if (urb->status != -EINPROGRESS) {
1769 spin_unlock(&urb->lock);
1770 ret = -EPIPE;
1771 goto error;
1772 }
1773 urb->hcpriv = td;
1774 spin_unlock(&urb->lock);
1775
1776 if (request) {
1777 ret = start_transfer(r8a66597, td);
1778 if (ret < 0) {
1779 list_del(&td->queue);
1780 kfree(td);
1781 }
1782 } else
1783 set_td_timer(r8a66597, td);
1784
1785 error:
1786 spin_unlock_irqrestore(&r8a66597->lock, flags);
1787 return ret;
1788 }
1789
1790 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
1791 {
1792 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1793 struct r8a66597_td *td;
1794 unsigned long flags;
1795
1796 spin_lock_irqsave(&r8a66597->lock, flags);
1797 if (urb->hcpriv) {
1798 td = urb->hcpriv;
1799 pipe_stop(r8a66597, td->pipe);
1800 pipe_irq_disable(r8a66597, td->pipenum);
1801 disable_irq_empty(r8a66597, td->pipenum);
1802 done(r8a66597, td, td->pipenum, urb);
1803 }
1804 spin_unlock_irqrestore(&r8a66597->lock, flags);
1805 return 0;
1806 }
1807
1808 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1809 struct usb_host_endpoint *hep)
1810 {
1811 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1812 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1813 struct r8a66597_td *td;
1814 struct urb *urb = NULL;
1815 u16 pipenum;
1816 unsigned long flags;
1817
1818 if (pipe == NULL)
1819 return;
1820 pipenum = pipe->info.pipenum;
1821
1822 if (pipenum == 0) {
1823 kfree(hep->hcpriv);
1824 hep->hcpriv = NULL;
1825 return;
1826 }
1827
1828 spin_lock_irqsave(&r8a66597->lock, flags);
1829 pipe_stop(r8a66597, pipe);
1830 pipe_irq_disable(r8a66597, pipenum);
1831 disable_irq_empty(r8a66597, pipenum);
1832 td = r8a66597_get_td(r8a66597, pipenum);
1833 if (td)
1834 urb = td->urb;
1835 done(r8a66597, td, pipenum, urb);
1836 kfree(hep->hcpriv);
1837 hep->hcpriv = NULL;
1838 spin_unlock_irqrestore(&r8a66597->lock, flags);
1839 }
1840
1841 static int r8a66597_get_frame(struct usb_hcd *hcd)
1842 {
1843 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1844 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1845 }
1846
1847 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1848 {
1849 int chix;
1850
1851 if (udev->state == USB_STATE_CONFIGURED &&
1852 udev->parent && udev->parent->devnum > 1 &&
1853 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1854 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1855
1856 for (chix = 0; chix < udev->maxchild; chix++) {
1857 struct usb_device *childdev = udev->children[chix];
1858
1859 if (childdev)
1860 collect_usb_address_map(childdev, map);
1861 }
1862 }
1863
1864 /* this function must be called with interrupt disabled */
1865 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1866 int addr)
1867 {
1868 struct r8a66597_device *dev;
1869 struct list_head *list = &r8a66597->child_device;
1870
1871 list_for_each_entry(dev, list, device_list) {
1872 if (!dev)
1873 continue;
1874 if (dev->usb_address != addr)
1875 continue;
1876
1877 return dev;
1878 }
1879
1880 err("get_r8a66597_device fail.(%d)\n", addr);
1881 return NULL;
1882 }
1883
1884 static void update_usb_address_map(struct r8a66597 *r8a66597,
1885 struct usb_device *root_hub,
1886 unsigned long *map)
1887 {
1888 int i, j, addr;
1889 unsigned long diff;
1890 unsigned long flags;
1891
1892 for (i = 0; i < 4; i++) {
1893 diff = r8a66597->child_connect_map[i] ^ map[i];
1894 if (!diff)
1895 continue;
1896
1897 for (j = 0; j < 32; j++) {
1898 if (!(diff & (1 << j)))
1899 continue;
1900
1901 addr = i * 32 + j;
1902 if (map[i] & (1 << j))
1903 set_child_connect_map(r8a66597, addr);
1904 else {
1905 struct r8a66597_device *dev;
1906
1907 spin_lock_irqsave(&r8a66597->lock, flags);
1908 dev = get_r8a66597_device(r8a66597, addr);
1909 disable_r8a66597_pipe_all(r8a66597, dev);
1910 free_usb_address(r8a66597, dev);
1911 put_child_connect_map(r8a66597, addr);
1912 spin_unlock_irqrestore(&r8a66597->lock, flags);
1913 }
1914 }
1915 }
1916 }
1917
1918 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
1919 struct usb_hcd *hcd)
1920 {
1921 struct usb_bus *bus;
1922 unsigned long now_map[4];
1923
1924 memset(now_map, 0, sizeof(now_map));
1925
1926 list_for_each_entry(bus, &usb_bus_list, bus_list) {
1927 if (!bus->root_hub)
1928 continue;
1929
1930 if (bus->busnum != hcd->self.busnum)
1931 continue;
1932
1933 collect_usb_address_map(bus->root_hub, now_map);
1934 update_usb_address_map(r8a66597, bus->root_hub, now_map);
1935 }
1936 }
1937
1938 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
1939 {
1940 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1941 unsigned long flags;
1942 int i;
1943
1944 r8a66597_check_detect_child(r8a66597, hcd);
1945
1946 spin_lock_irqsave(&r8a66597->lock, flags);
1947
1948 *buf = 0; /* initialize (no change) */
1949
1950 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
1951 if (r8a66597->root_hub[i].port & 0xffff0000)
1952 *buf |= 1 << (i + 1);
1953 }
1954
1955 spin_unlock_irqrestore(&r8a66597->lock, flags);
1956
1957 return (*buf != 0);
1958 }
1959
1960 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
1961 struct usb_hub_descriptor *desc)
1962 {
1963 desc->bDescriptorType = 0x29;
1964 desc->bHubContrCurrent = 0;
1965 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
1966 desc->bDescLength = 9;
1967 desc->bPwrOn2PwrGood = 0;
1968 desc->wHubCharacteristics = cpu_to_le16(0x0011);
1969 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
1970 desc->bitmap[1] = ~0;
1971 }
1972
1973 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1974 u16 wIndex, char *buf, u16 wLength)
1975 {
1976 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1977 int ret;
1978 int port = (wIndex & 0x00FF) - 1;
1979 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1980 unsigned long flags;
1981
1982 ret = 0;
1983
1984 spin_lock_irqsave(&r8a66597->lock, flags);
1985 switch (typeReq) {
1986 case ClearHubFeature:
1987 case SetHubFeature:
1988 switch (wValue) {
1989 case C_HUB_OVER_CURRENT:
1990 case C_HUB_LOCAL_POWER:
1991 break;
1992 default:
1993 goto error;
1994 }
1995 break;
1996 case ClearPortFeature:
1997 if (wIndex > R8A66597_MAX_ROOT_HUB)
1998 goto error;
1999 if (wLength != 0)
2000 goto error;
2001
2002 switch (wValue) {
2003 case USB_PORT_FEAT_ENABLE:
2004 rh->port &= (1 << USB_PORT_FEAT_POWER);
2005 break;
2006 case USB_PORT_FEAT_SUSPEND:
2007 break;
2008 case USB_PORT_FEAT_POWER:
2009 r8a66597_port_power(r8a66597, port, 0);
2010 break;
2011 case USB_PORT_FEAT_C_ENABLE:
2012 case USB_PORT_FEAT_C_SUSPEND:
2013 case USB_PORT_FEAT_C_CONNECTION:
2014 case USB_PORT_FEAT_C_OVER_CURRENT:
2015 case USB_PORT_FEAT_C_RESET:
2016 break;
2017 default:
2018 goto error;
2019 }
2020 rh->port &= ~(1 << wValue);
2021 break;
2022 case GetHubDescriptor:
2023 r8a66597_hub_descriptor(r8a66597,
2024 (struct usb_hub_descriptor *)buf);
2025 break;
2026 case GetHubStatus:
2027 *buf = 0x00;
2028 break;
2029 case GetPortStatus:
2030 if (wIndex > R8A66597_MAX_ROOT_HUB)
2031 goto error;
2032 *(u32 *)buf = rh->port;
2033 break;
2034 case SetPortFeature:
2035 if (wIndex > R8A66597_MAX_ROOT_HUB)
2036 goto error;
2037 if (wLength != 0)
2038 goto error;
2039
2040 switch (wValue) {
2041 case USB_PORT_FEAT_SUSPEND:
2042 break;
2043 case USB_PORT_FEAT_POWER:
2044 r8a66597_port_power(r8a66597, port, 1);
2045 rh->port |= (1 << USB_PORT_FEAT_POWER);
2046 break;
2047 case USB_PORT_FEAT_RESET: {
2048 struct r8a66597_device *dev = rh->dev;
2049
2050 rh->port |= (1 << USB_PORT_FEAT_RESET);
2051
2052 disable_r8a66597_pipe_all(r8a66597, dev);
2053 free_usb_address(r8a66597, dev);
2054
2055 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2056 get_dvstctr_reg(port));
2057 mod_timer(&r8a66597->rh_timer,
2058 jiffies + msecs_to_jiffies(50));
2059 }
2060 break;
2061 default:
2062 goto error;
2063 }
2064 rh->port |= 1 << wValue;
2065 break;
2066 default:
2067 error:
2068 ret = -EPIPE;
2069 break;
2070 }
2071
2072 spin_unlock_irqrestore(&r8a66597->lock, flags);
2073 return ret;
2074 }
2075
2076 static struct hc_driver r8a66597_hc_driver = {
2077 .description = hcd_name,
2078 .hcd_priv_size = sizeof(struct r8a66597),
2079 .irq = r8a66597_irq,
2080
2081 /*
2082 * generic hardware linkage
2083 */
2084 .flags = HCD_USB2,
2085
2086 .start = r8a66597_start,
2087 .stop = r8a66597_stop,
2088
2089 /*
2090 * managing i/o requests and associated device resources
2091 */
2092 .urb_enqueue = r8a66597_urb_enqueue,
2093 .urb_dequeue = r8a66597_urb_dequeue,
2094 .endpoint_disable = r8a66597_endpoint_disable,
2095
2096 /*
2097 * periodic schedule support
2098 */
2099 .get_frame_number = r8a66597_get_frame,
2100
2101 /*
2102 * root hub support
2103 */
2104 .hub_status_data = r8a66597_hub_status_data,
2105 .hub_control = r8a66597_hub_control,
2106 };
2107
2108 #if defined(CONFIG_PM)
2109 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2110 {
2111 pdev->dev.power.power_state = state;
2112 return 0;
2113 }
2114
2115 static int r8a66597_resume(struct platform_device *pdev)
2116 {
2117 pdev->dev.power.power_state = PMSG_ON;
2118 return 0;
2119 }
2120 #else /* if defined(CONFIG_PM) */
2121 #define r8a66597_suspend NULL
2122 #define r8a66597_resume NULL
2123 #endif
2124
2125 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2126 {
2127 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
2128 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2129
2130 del_timer_sync(&r8a66597->rh_timer);
2131 iounmap((void *)r8a66597->reg);
2132 usb_remove_hcd(hcd);
2133 usb_put_hcd(hcd);
2134 return 0;
2135 }
2136
2137 #define resource_len(r) (((r)->end - (r)->start) + 1)
2138 static int __init r8a66597_probe(struct platform_device *pdev)
2139 {
2140 struct resource *res = NULL;
2141 int irq = -1;
2142 void __iomem *reg = NULL;
2143 struct usb_hcd *hcd = NULL;
2144 struct r8a66597 *r8a66597;
2145 int ret = 0;
2146 int i;
2147
2148 if (pdev->dev.dma_mask) {
2149 ret = -EINVAL;
2150 err("dma not support");
2151 goto clean_up;
2152 }
2153
2154 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2155 (char *)hcd_name);
2156 if (!res) {
2157 ret = -ENODEV;
2158 err("platform_get_resource_byname error.");
2159 goto clean_up;
2160 }
2161
2162 irq = platform_get_irq(pdev, 0);
2163 if (irq < 0) {
2164 ret = -ENODEV;
2165 err("platform_get_irq error.");
2166 goto clean_up;
2167 }
2168
2169 reg = ioremap(res->start, resource_len(res));
2170 if (reg == NULL) {
2171 ret = -ENOMEM;
2172 err("ioremap error.");
2173 goto clean_up;
2174 }
2175
2176 /* initialize hcd */
2177 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2178 if (!hcd) {
2179 ret = -ENOMEM;
2180 err("Failed to create hcd");
2181 goto clean_up;
2182 }
2183 r8a66597 = hcd_to_r8a66597(hcd);
2184 memset(r8a66597, 0, sizeof(struct r8a66597));
2185 dev_set_drvdata(&pdev->dev, r8a66597);
2186
2187 spin_lock_init(&r8a66597->lock);
2188 init_timer(&r8a66597->rh_timer);
2189 r8a66597->rh_timer.function = r8a66597_timer;
2190 r8a66597->rh_timer.data = (unsigned long)r8a66597;
2191 r8a66597->reg = (unsigned long)reg;
2192
2193 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2194 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2195 init_timer(&r8a66597->td_timer[i]);
2196 r8a66597->td_timer[i].function = r8a66597_td_timer;
2197 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2198 }
2199 INIT_LIST_HEAD(&r8a66597->child_device);
2200
2201 hcd->rsrc_start = res->start;
2202 ret = usb_add_hcd(hcd, irq, 0);
2203 if (ret != 0) {
2204 err("Failed to add hcd");
2205 goto clean_up;
2206 }
2207
2208 return 0;
2209
2210 clean_up:
2211 if (reg)
2212 iounmap(reg);
2213 if (res)
2214 release_mem_region(res->start, 1);
2215
2216 return ret;
2217 }
2218
2219 static struct platform_driver r8a66597_driver = {
2220 .probe = r8a66597_probe,
2221 .remove = r8a66597_remove,
2222 .suspend = r8a66597_suspend,
2223 .resume = r8a66597_resume,
2224 .driver = {
2225 .name = (char *) hcd_name,
2226 },
2227 };
2228
2229 static int __init r8a66597_init(void)
2230 {
2231 if (usb_disabled())
2232 return -ENODEV;
2233
2234 info("driver %s, %s", hcd_name, DRIVER_VERSION);
2235 return platform_driver_register(&r8a66597_driver);
2236 }
2237 module_init(r8a66597_init);
2238
2239 static void __exit r8a66597_cleanup(void)
2240 {
2241 platform_driver_unregister(&r8a66597_driver);
2242 }
2243 module_exit(r8a66597_cleanup);
2244
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree