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USB: r8a66597-hcd: fixes some problem
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / usb / host / r8a66597-hcd.c
blobd60f1985320cfc630e107e81bd3c406a4229a083
1 /*
2 * R8A66597 HCD (Host Controller Driver)
3 *
4 * Copyright (C) 2006-2007 Renesas Solutions Corp.
5 * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
6 * Portions Copyright (C) 2004-2005 David Brownell
7 * Portions Copyright (C) 1999 Roman Weissgaerber
8 *
9 * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; version 2 of the License.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26 #include <linux/module.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/smp_lock.h>
30 #include <linux/errno.h>
31 #include <linux/init.h>
32 #include <linux/timer.h>
33 #include <linux/delay.h>
34 #include <linux/list.h>
35 #include <linux/interrupt.h>
36 #include <linux/usb.h>
37 #include <linux/platform_device.h>
38 #include <linux/io.h>
39 #include <linux/irq.h>
40
41 #include "../core/hcd.h"
42 #include "r8a66597.h"
43
44 MODULE_DESCRIPTION("R8A66597 USB Host Controller Driver");
45 MODULE_LICENSE("GPL");
46 MODULE_AUTHOR("Yoshihiro Shimoda");
47
48 #define DRIVER_VERSION "29 May 2007"
49
50 static const char hcd_name[] = "r8a66597_hcd";
51
52 /* module parameters */
53 static unsigned short clock = XTAL12;
54 module_param(clock, ushort, 0644);
55 MODULE_PARM_DESC(clock, "input clock: 48MHz=32768, 24MHz=16384, 12MHz=0 "
56 "(default=0)");
57
58 static unsigned short vif = LDRV;
59 module_param(vif, ushort, 0644);
60 MODULE_PARM_DESC(vif, "input VIF: 3.3V=32768, 1.5V=0(default=32768)");
61
62 static unsigned short endian;
63 module_param(endian, ushort, 0644);
64 MODULE_PARM_DESC(endian, "data endian: big=256, little=0 (default=0)");
65
66 static unsigned short irq_sense = INTL;
67 module_param(irq_sense, ushort, 0644);
68 MODULE_PARM_DESC(irq_sense, "IRQ sense: low level=32, falling edge=0 "
69 "(default=32)");
70
71 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum);
72 static int r8a66597_get_frame(struct usb_hcd *hcd);
73
74 /* this function must be called with interrupt disabled */
75 static void enable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
76 unsigned long reg)
77 {
78 u16 tmp;
79
80 tmp = r8a66597_read(r8a66597, INTENB0);
81 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
82 r8a66597_bset(r8a66597, 1 << pipenum, reg);
83 r8a66597_write(r8a66597, tmp, INTENB0);
84 }
85
86 /* this function must be called with interrupt disabled */
87 static void disable_pipe_irq(struct r8a66597 *r8a66597, u16 pipenum,
88 unsigned long reg)
89 {
90 u16 tmp;
91
92 tmp = r8a66597_read(r8a66597, INTENB0);
93 r8a66597_bclr(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
94 r8a66597_bclr(r8a66597, 1 << pipenum, reg);
95 r8a66597_write(r8a66597, tmp, INTENB0);
96 }
97
98 static void set_devadd_reg(struct r8a66597 *r8a66597, u8 r8a66597_address,
99 u16 usbspd, u8 upphub, u8 hubport, int port)
100 {
101 u16 val;
102 unsigned long devadd_reg = get_devadd_addr(r8a66597_address);
103
104 val = (upphub << 11) | (hubport << 8) | (usbspd << 6) | (port & 0x0001);
105 r8a66597_write(r8a66597, val, devadd_reg);
106 }
107
108 static int enable_controller(struct r8a66597 *r8a66597)
109 {
110 u16 tmp;
111 int i = 0;
112
113 do {
114 r8a66597_write(r8a66597, USBE, SYSCFG0);
115 tmp = r8a66597_read(r8a66597, SYSCFG0);
116 if (i++ > 1000) {
117 err("register access fail.");
118 return -ENXIO;
119 }
120 } while ((tmp & USBE) != USBE);
121 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
122 r8a66597_mdfy(r8a66597, clock, XTAL, SYSCFG0);
123
124 i = 0;
125 r8a66597_bset(r8a66597, XCKE, SYSCFG0);
126 do {
127 msleep(1);
128 tmp = r8a66597_read(r8a66597, SYSCFG0);
129 if (i++ > 500) {
130 err("register access fail.");
131 return -ENXIO;
132 }
133 } while ((tmp & SCKE) != SCKE);
134
135 r8a66597_bset(r8a66597, DCFM | DRPD, SYSCFG0);
136 r8a66597_bset(r8a66597, DRPD, SYSCFG1);
137
138 r8a66597_bset(r8a66597, vif & LDRV, PINCFG);
139 r8a66597_bset(r8a66597, HSE, SYSCFG0);
140 r8a66597_bset(r8a66597, HSE, SYSCFG1);
141 r8a66597_bset(r8a66597, USBE, SYSCFG0);
142
143 r8a66597_bset(r8a66597, BEMPE | NRDYE | BRDYE, INTENB0);
144 r8a66597_bset(r8a66597, irq_sense & INTL, SOFCFG);
145 r8a66597_bset(r8a66597, BRDY0, BRDYENB);
146 r8a66597_bset(r8a66597, BEMP0, BEMPENB);
147
148 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA0CFG);
149 r8a66597_write(r8a66597, BURST | CPU_ADR_RD_WR, DMA1CFG);
150
151 r8a66597_bset(r8a66597, endian & BIGEND, CFIFOSEL);
152 r8a66597_bset(r8a66597, endian & BIGEND, D0FIFOSEL);
153 r8a66597_bset(r8a66597, endian & BIGEND, D1FIFOSEL);
154
155 r8a66597_bset(r8a66597, TRNENSEL, SOFCFG);
156
157 r8a66597_bset(r8a66597, SIGNE | SACKE, INTENB1);
158 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
159 r8a66597_bset(r8a66597, ATTCHE, INTENB1);
160 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
161 r8a66597_bset(r8a66597, ATTCHE, INTENB2);
162
163 return 0;
164 }
165
166 static void disable_controller(struct r8a66597 *r8a66597)
167 {
168 u16 tmp;
169
170 r8a66597_write(r8a66597, 0, INTENB0);
171 r8a66597_write(r8a66597, 0, INTENB1);
172 r8a66597_write(r8a66597, 0, INTENB2);
173 r8a66597_write(r8a66597, 0, INTSTS0);
174 r8a66597_write(r8a66597, 0, INTSTS1);
175 r8a66597_write(r8a66597, 0, INTSTS2);
176
177 r8a66597_port_power(r8a66597, 0, 0);
178 r8a66597_port_power(r8a66597, 1, 0);
179
180 do {
181 tmp = r8a66597_read(r8a66597, SOFCFG) & EDGESTS;
182 udelay(640);
183 } while (tmp == EDGESTS);
184
185 r8a66597_bclr(r8a66597, DCFM | DRPD, SYSCFG0);
186 r8a66597_bclr(r8a66597, DRPD, SYSCFG1);
187 r8a66597_bclr(r8a66597, HSE, SYSCFG0);
188 r8a66597_bclr(r8a66597, HSE, SYSCFG1);
189
190 r8a66597_bclr(r8a66597, SCKE, SYSCFG0);
191 udelay(1);
192 r8a66597_bclr(r8a66597, PLLC, SYSCFG0);
193 r8a66597_bclr(r8a66597, XCKE, SYSCFG0);
194 r8a66597_bclr(r8a66597, USBE, SYSCFG0);
195 }
196
197 static int get_parent_r8a66597_address(struct r8a66597 *r8a66597,
198 struct usb_device *udev)
199 {
200 struct r8a66597_device *dev;
201
202 if (udev->parent && udev->parent->devnum != 1)
203 udev = udev->parent;
204
205 dev = dev_get_drvdata(&udev->dev);
206 if (dev)
207 return dev->address;
208 else
209 return 0;
210 }
211
212 static int is_child_device(char *devpath)
213 {
214 return (devpath[2] ? 1 : 0);
215 }
216
217 static int is_hub_limit(char *devpath)
218 {
219 return ((strlen(devpath) >= 4) ? 1 : 0);
220 }
221
222 static void get_port_number(char *devpath, u16 *root_port, u16 *hub_port)
223 {
224 if (root_port) {
225 *root_port = (devpath[0] & 0x0F) - 1;
226 if (*root_port >= R8A66597_MAX_ROOT_HUB)
227 err("illegal root port number");
228 }
229 if (hub_port)
230 *hub_port = devpath[2] & 0x0F;
231 }
232
233 static u16 get_r8a66597_usb_speed(enum usb_device_speed speed)
234 {
235 u16 usbspd = 0;
236
237 switch (speed) {
238 case USB_SPEED_LOW:
239 usbspd = LSMODE;
240 break;
241 case USB_SPEED_FULL:
242 usbspd = FSMODE;
243 break;
244 case USB_SPEED_HIGH:
245 usbspd = HSMODE;
246 break;
247 default:
248 err("unknown speed");
249 break;
250 }
251
252 return usbspd;
253 }
254
255 static void set_child_connect_map(struct r8a66597 *r8a66597, int address)
256 {
257 int idx;
258
259 idx = address / 32;
260 r8a66597->child_connect_map[idx] |= 1 << (address % 32);
261 }
262
263 static void put_child_connect_map(struct r8a66597 *r8a66597, int address)
264 {
265 int idx;
266
267 idx = address / 32;
268 r8a66597->child_connect_map[idx] &= ~(1 << (address % 32));
269 }
270
271 static void set_pipe_reg_addr(struct r8a66597_pipe *pipe, u8 dma_ch)
272 {
273 u16 pipenum = pipe->info.pipenum;
274 unsigned long fifoaddr[] = {D0FIFO, D1FIFO, CFIFO};
275 unsigned long fifosel[] = {D0FIFOSEL, D1FIFOSEL, CFIFOSEL};
276 unsigned long fifoctr[] = {D0FIFOCTR, D1FIFOCTR, CFIFOCTR};
277
278 if (dma_ch > R8A66597_PIPE_NO_DMA) /* dma fifo not use? */
279 dma_ch = R8A66597_PIPE_NO_DMA;
280
281 pipe->fifoaddr = fifoaddr[dma_ch];
282 pipe->fifosel = fifosel[dma_ch];
283 pipe->fifoctr = fifoctr[dma_ch];
284
285 if (pipenum == 0)
286 pipe->pipectr = DCPCTR;
287 else
288 pipe->pipectr = get_pipectr_addr(pipenum);
289
290 if (check_bulk_or_isoc(pipenum)) {
291 pipe->pipetre = get_pipetre_addr(pipenum);
292 pipe->pipetrn = get_pipetrn_addr(pipenum);
293 } else {
294 pipe->pipetre = 0;
295 pipe->pipetrn = 0;
296 }
297 }
298
299 static struct r8a66597_device *
300 get_urb_to_r8a66597_dev(struct r8a66597 *r8a66597, struct urb *urb)
301 {
302 if (usb_pipedevice(urb->pipe) == 0)
303 return &r8a66597->device0;
304
305 return dev_get_drvdata(&urb->dev->dev);
306 }
307
308 static int make_r8a66597_device(struct r8a66597 *r8a66597,
309 struct urb *urb, u8 addr)
310 {
311 struct r8a66597_device *dev;
312 int usb_address = urb->setup_packet[2]; /* urb->pipe is address 0 */
313
314 dev = kzalloc(sizeof(struct r8a66597_device), GFP_ATOMIC);
315 if (dev == NULL)
316 return -ENOMEM;
317
318 dev_set_drvdata(&urb->dev->dev, dev);
319 dev->udev = urb->dev;
320 dev->address = addr;
321 dev->usb_address = usb_address;
322 dev->state = USB_STATE_ADDRESS;
323 dev->ep_in_toggle = 0;
324 dev->ep_out_toggle = 0;
325 INIT_LIST_HEAD(&dev->device_list);
326 list_add_tail(&dev->device_list, &r8a66597->child_device);
327
328 get_port_number(urb->dev->devpath, &dev->root_port, &dev->hub_port);
329 if (!is_child_device(urb->dev->devpath))
330 r8a66597->root_hub[dev->root_port].dev = dev;
331
332 set_devadd_reg(r8a66597, dev->address,
333 get_r8a66597_usb_speed(urb->dev->speed),
334 get_parent_r8a66597_address(r8a66597, urb->dev),
335 dev->hub_port, dev->root_port);
336
337 return 0;
338 }
339
340 /* this function must be called with interrupt disabled */
341 static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
342 {
343 u8 addr; /* R8A66597's address */
344 struct r8a66597_device *dev;
345
346 if (is_hub_limit(urb->dev->devpath)) {
347 err("Externel hub limit reached.");
348 return 0;
349 }
350
351 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
352 if (dev && dev->state >= USB_STATE_ADDRESS)
353 return dev->address;
354
355 for (addr = 1; addr <= R8A66597_MAX_DEVICE; addr++) {
356 if (r8a66597->address_map & (1 << addr))
357 continue;
358
359 dbg("alloc_address: r8a66597_addr=%d", addr);
360 r8a66597->address_map |= 1 << addr;
361
362 if (make_r8a66597_device(r8a66597, urb, addr) < 0)
363 return 0;
364
365 return addr;
366 }
367
368 err("cannot communicate with a USB device more than 10.(%x)",
369 r8a66597->address_map);
370
371 return 0;
372 }
373
374 /* this function must be called with interrupt disabled */
375 static void free_usb_address(struct r8a66597 *r8a66597,
376 struct r8a66597_device *dev)
377 {
378 int port;
379
380 if (!dev)
381 return;
382
383 dbg("free_addr: addr=%d", dev->address);
384
385 dev->state = USB_STATE_DEFAULT;
386 r8a66597->address_map &= ~(1 << dev->address);
387 dev->address = 0;
388 dev_set_drvdata(&dev->udev->dev, NULL);
389 list_del(&dev->device_list);
390 kfree(dev);
391
392 for (port = 0; port < R8A66597_MAX_ROOT_HUB; port++) {
393 if (r8a66597->root_hub[port].dev == dev) {
394 r8a66597->root_hub[port].dev = NULL;
395 break;
396 }
397 }
398 }
399
400 static void r8a66597_reg_wait(struct r8a66597 *r8a66597, unsigned long reg,
401 u16 mask, u16 loop)
402 {
403 u16 tmp;
404 int i = 0;
405
406 do {
407 tmp = r8a66597_read(r8a66597, reg);
408 if (i++ > 1000000) {
409 err("register%lx, loop %x is timeout", reg, loop);
410 break;
411 }
412 ndelay(1);
413 } while ((tmp & mask) != loop);
414 }
415
416 /* this function must be called with interrupt disabled */
417 static void pipe_start(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
418 {
419 u16 tmp;
420
421 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
422 if ((pipe->info.pipenum != 0) & ((tmp & PID_STALL) != 0)) /* stall? */
423 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
424 r8a66597_mdfy(r8a66597, PID_BUF, PID, pipe->pipectr);
425 }
426
427 /* this function must be called with interrupt disabled */
428 static void pipe_stop(struct r8a66597 *r8a66597, struct r8a66597_pipe *pipe)
429 {
430 u16 tmp;
431
432 tmp = r8a66597_read(r8a66597, pipe->pipectr) & PID;
433 if ((tmp & PID_STALL11) != PID_STALL11) /* force stall? */
434 r8a66597_mdfy(r8a66597, PID_STALL, PID, pipe->pipectr);
435 r8a66597_mdfy(r8a66597, PID_NAK, PID, pipe->pipectr);
436 r8a66597_reg_wait(r8a66597, pipe->pipectr, PBUSY, 0);
437 }
438
439 /* this function must be called with interrupt disabled */
440 static void clear_all_buffer(struct r8a66597 *r8a66597,
441 struct r8a66597_pipe *pipe)
442 {
443 u16 tmp;
444
445 if (!pipe || pipe->info.pipenum == 0)
446 return;
447
448 pipe_stop(r8a66597, pipe);
449 r8a66597_bset(r8a66597, ACLRM, pipe->pipectr);
450 tmp = r8a66597_read(r8a66597, pipe->pipectr);
451 tmp = r8a66597_read(r8a66597, pipe->pipectr);
452 tmp = r8a66597_read(r8a66597, pipe->pipectr);
453 r8a66597_bclr(r8a66597, ACLRM, pipe->pipectr);
454 }
455
456 /* this function must be called with interrupt disabled */
457 static void r8a66597_pipe_toggle(struct r8a66597 *r8a66597,
458 struct r8a66597_pipe *pipe, int toggle)
459 {
460 if (toggle)
461 r8a66597_bset(r8a66597, SQSET, pipe->pipectr);
462 else
463 r8a66597_bset(r8a66597, SQCLR, pipe->pipectr);
464 }
465
466 /* this function must be called with interrupt disabled */
467 static inline void cfifo_change(struct r8a66597 *r8a66597, u16 pipenum)
468 {
469 r8a66597_mdfy(r8a66597, MBW | pipenum, MBW | CURPIPE, CFIFOSEL);
470 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, pipenum);
471 }
472
473 /* this function must be called with interrupt disabled */
474 static inline void fifo_change_from_pipe(struct r8a66597 *r8a66597,
475 struct r8a66597_pipe *pipe)
476 {
477 cfifo_change(r8a66597, 0);
478 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D0FIFOSEL);
479 r8a66597_mdfy(r8a66597, MBW | 0, MBW | CURPIPE, D1FIFOSEL);
480
481 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum, MBW | CURPIPE,
482 pipe->fifosel);
483 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE, pipe->info.pipenum);
484 }
485
486 static u16 r8a66597_get_pipenum(struct urb *urb, struct usb_host_endpoint *hep)
487 {
488 struct r8a66597_pipe *pipe = hep->hcpriv;
489
490 if (usb_pipeendpoint(urb->pipe) == 0)
491 return 0;
492 else
493 return pipe->info.pipenum;
494 }
495
496 static u16 get_urb_to_r8a66597_addr(struct r8a66597 *r8a66597, struct urb *urb)
497 {
498 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
499
500 return (usb_pipedevice(urb->pipe) == 0) ? 0 : dev->address;
501 }
502
503 static unsigned short *get_toggle_pointer(struct r8a66597_device *dev,
504 int urb_pipe)
505 {
506 if (!dev)
507 return NULL;
508
509 return usb_pipein(urb_pipe) ? &dev->ep_in_toggle : &dev->ep_out_toggle;
510 }
511
512 /* this function must be called with interrupt disabled */
513 static void pipe_toggle_set(struct r8a66597 *r8a66597,
514 struct r8a66597_pipe *pipe,
515 struct urb *urb, int set)
516 {
517 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
518 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
519 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
520
521 if (!toggle)
522 return;
523
524 if (set)
525 *toggle |= 1 << endpoint;
526 else
527 *toggle &= ~(1 << endpoint);
528 }
529
530 /* this function must be called with interrupt disabled */
531 static void pipe_toggle_save(struct r8a66597 *r8a66597,
532 struct r8a66597_pipe *pipe,
533 struct urb *urb)
534 {
535 if (r8a66597_read(r8a66597, pipe->pipectr) & SQMON)
536 pipe_toggle_set(r8a66597, pipe, urb, 1);
537 else
538 pipe_toggle_set(r8a66597, pipe, urb, 0);
539 }
540
541 /* this function must be called with interrupt disabled */
542 static void pipe_toggle_restore(struct r8a66597 *r8a66597,
543 struct r8a66597_pipe *pipe,
544 struct urb *urb)
545 {
546 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
547 unsigned char endpoint = usb_pipeendpoint(urb->pipe);
548 unsigned short *toggle = get_toggle_pointer(dev, urb->pipe);
549
550 if (!toggle)
551 return;
552
553 r8a66597_pipe_toggle(r8a66597, pipe, *toggle & (1 << endpoint));
554 }
555
556 /* this function must be called with interrupt disabled */
557 static void pipe_buffer_setting(struct r8a66597 *r8a66597,
558 struct r8a66597_pipe_info *info)
559 {
560 u16 val = 0;
561
562 if (info->pipenum == 0)
563 return;
564
565 r8a66597_bset(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
566 r8a66597_bclr(r8a66597, ACLRM, get_pipectr_addr(info->pipenum));
567 r8a66597_write(r8a66597, info->pipenum, PIPESEL);
568 if (!info->dir_in)
569 val |= R8A66597_DIR;
570 if (info->type == R8A66597_BULK && info->dir_in)
571 val |= R8A66597_DBLB | R8A66597_SHTNAK;
572 val |= info->type | info->epnum;
573 r8a66597_write(r8a66597, val, PIPECFG);
574
575 r8a66597_write(r8a66597, (info->buf_bsize << 10) | (info->bufnum),
576 PIPEBUF);
577 r8a66597_write(r8a66597, make_devsel(info->address) | info->maxpacket,
578 PIPEMAXP);
579 if (info->interval)
580 info->interval--;
581 r8a66597_write(r8a66597, info->interval, PIPEPERI);
582 }
583
584
585
586 /* this function must be called with interrupt disabled */
587 static void pipe_setting(struct r8a66597 *r8a66597, struct r8a66597_td *td)
588 {
589 struct r8a66597_pipe_info *info;
590 struct urb *urb = td->urb;
591
592 if (td->pipenum > 0) {
593 info = &td->pipe->info;
594 cfifo_change(r8a66597, 0);
595 pipe_buffer_setting(r8a66597, info);
596
597 if (!usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
598 usb_pipeout(urb->pipe)) &&
599 !usb_pipecontrol(urb->pipe)) {
600 r8a66597_pipe_toggle(r8a66597, td->pipe, 0);
601 pipe_toggle_set(r8a66597, td->pipe, urb, 0);
602 clear_all_buffer(r8a66597, td->pipe);
603 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
604 usb_pipeout(urb->pipe), 1);
605 }
606 pipe_toggle_restore(r8a66597, td->pipe, urb);
607 }
608 }
609
610 /* this function must be called with interrupt disabled */
611 static u16 get_empty_pipenum(struct r8a66597 *r8a66597,
612 struct usb_endpoint_descriptor *ep)
613 {
614 u16 array[R8A66597_MAX_NUM_PIPE], i = 0, min;
615
616 memset(array, 0, sizeof(array));
617 switch (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
618 case USB_ENDPOINT_XFER_BULK:
619 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
620 array[i++] = 4;
621 else {
622 array[i++] = 3;
623 array[i++] = 5;
624 }
625 break;
626 case USB_ENDPOINT_XFER_INT:
627 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) {
628 array[i++] = 6;
629 array[i++] = 7;
630 array[i++] = 8;
631 } else
632 array[i++] = 9;
633 break;
634 case USB_ENDPOINT_XFER_ISOC:
635 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
636 array[i++] = 2;
637 else
638 array[i++] = 1;
639 break;
640 default:
641 err("Illegal type");
642 return 0;
643 }
644
645 i = 1;
646 min = array[0];
647 while (array[i] != 0) {
648 if (r8a66597->pipe_cnt[min] > r8a66597->pipe_cnt[array[i]])
649 min = array[i];
650 i++;
651 }
652
653 return min;
654 }
655
656 static u16 get_r8a66597_type(__u8 type)
657 {
658 u16 r8a66597_type;
659
660 switch (type) {
661 case USB_ENDPOINT_XFER_BULK:
662 r8a66597_type = R8A66597_BULK;
663 break;
664 case USB_ENDPOINT_XFER_INT:
665 r8a66597_type = R8A66597_INT;
666 break;
667 case USB_ENDPOINT_XFER_ISOC:
668 r8a66597_type = R8A66597_ISO;
669 break;
670 default:
671 err("Illegal type");
672 r8a66597_type = 0x0000;
673 break;
674 }
675
676 return r8a66597_type;
677 }
678
679 static u16 get_bufnum(u16 pipenum)
680 {
681 u16 bufnum = 0;
682
683 if (pipenum == 0)
684 bufnum = 0;
685 else if (check_bulk_or_isoc(pipenum))
686 bufnum = 8 + (pipenum - 1) * R8A66597_BUF_BSIZE*2;
687 else if (check_interrupt(pipenum))
688 bufnum = 4 + (pipenum - 6);
689 else
690 err("Illegal pipenum (%d)", pipenum);
691
692 return bufnum;
693 }
694
695 static u16 get_buf_bsize(u16 pipenum)
696 {
697 u16 buf_bsize = 0;
698
699 if (pipenum == 0)
700 buf_bsize = 3;
701 else if (check_bulk_or_isoc(pipenum))
702 buf_bsize = R8A66597_BUF_BSIZE - 1;
703 else if (check_interrupt(pipenum))
704 buf_bsize = 0;
705 else
706 err("Illegal pipenum (%d)", pipenum);
707
708 return buf_bsize;
709 }
710
711 /* this function must be called with interrupt disabled */
712 static void enable_r8a66597_pipe_dma(struct r8a66597 *r8a66597,
713 struct r8a66597_device *dev,
714 struct r8a66597_pipe *pipe,
715 struct urb *urb)
716 {
717 int i;
718 struct r8a66597_pipe_info *info = &pipe->info;
719
720 if ((pipe->info.pipenum != 0) && (info->type != R8A66597_INT)) {
721 for (i = 0; i < R8A66597_MAX_DMA_CHANNEL; i++) {
722 if ((r8a66597->dma_map & (1 << i)) != 0)
723 continue;
724
725 info("address %d, EndpointAddress 0x%02x use DMA FIFO",
726 usb_pipedevice(urb->pipe),
727 info->dir_in ? USB_ENDPOINT_DIR_MASK + info->epnum
728 : info->epnum);
729
730 r8a66597->dma_map |= 1 << i;
731 dev->dma_map |= 1 << i;
732 set_pipe_reg_addr(pipe, i);
733
734 cfifo_change(r8a66597, 0);
735 r8a66597_mdfy(r8a66597, MBW | pipe->info.pipenum,
736 MBW | CURPIPE, pipe->fifosel);
737
738 r8a66597_reg_wait(r8a66597, pipe->fifosel, CURPIPE,
739 pipe->info.pipenum);
740 r8a66597_bset(r8a66597, BCLR, pipe->fifoctr);
741 break;
742 }
743 }
744 }
745
746 /* this function must be called with interrupt disabled */
747 static void enable_r8a66597_pipe(struct r8a66597 *r8a66597, struct urb *urb,
748 struct usb_host_endpoint *hep,
749 struct r8a66597_pipe_info *info)
750 {
751 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
752 struct r8a66597_pipe *pipe = hep->hcpriv;
753
754 dbg("enable_pipe:");
755
756 pipe->info = *info;
757 set_pipe_reg_addr(pipe, R8A66597_PIPE_NO_DMA);
758 r8a66597->pipe_cnt[pipe->info.pipenum]++;
759 dev->pipe_cnt[pipe->info.pipenum]++;
760
761 enable_r8a66597_pipe_dma(r8a66597, dev, pipe, urb);
762 }
763
764 /* this function must be called with interrupt disabled */
765 static void force_dequeue(struct r8a66597 *r8a66597, u16 pipenum, u16 address)
766 {
767 struct r8a66597_td *td, *next;
768 struct urb *urb;
769 struct list_head *list = &r8a66597->pipe_queue[pipenum];
770
771 if (list_empty(list))
772 return;
773
774 list_for_each_entry_safe(td, next, list, queue) {
775 if (!td)
776 continue;
777 if (td->address != address)
778 continue;
779
780 urb = td->urb;
781 list_del(&td->queue);
782 kfree(td);
783
784 if (urb) {
785 urb->status = -ENODEV;
786 urb->hcpriv = NULL;
787 spin_unlock(&r8a66597->lock);
788 usb_hcd_giveback_urb(r8a66597_to_hcd(r8a66597), urb);
789 spin_lock(&r8a66597->lock);
790 }
791 break;
792 }
793 }
794
795 /* this function must be called with interrupt disabled */
796 static void disable_r8a66597_pipe_all(struct r8a66597 *r8a66597,
797 struct r8a66597_device *dev)
798 {
799 int check_ep0 = 0;
800 u16 pipenum;
801
802 if (!dev)
803 return;
804
805 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
806 if (!dev->pipe_cnt[pipenum])
807 continue;
808
809 if (!check_ep0) {
810 check_ep0 = 1;
811 force_dequeue(r8a66597, 0, dev->address);
812 }
813
814 r8a66597->pipe_cnt[pipenum] -= dev->pipe_cnt[pipenum];
815 dev->pipe_cnt[pipenum] = 0;
816 force_dequeue(r8a66597, pipenum, dev->address);
817 }
818
819 dbg("disable_pipe");
820
821 r8a66597->dma_map &= ~(dev->dma_map);
822 dev->dma_map = 0;
823 }
824
825 /* this function must be called with interrupt disabled */
826 static void init_pipe_info(struct r8a66597 *r8a66597, struct urb *urb,
827 struct usb_host_endpoint *hep,
828 struct usb_endpoint_descriptor *ep)
829 {
830 struct r8a66597_pipe_info info;
831
832 info.pipenum = get_empty_pipenum(r8a66597, ep);
833 info.address = get_urb_to_r8a66597_addr(r8a66597, urb);
834 info.epnum = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
835 info.maxpacket = ep->wMaxPacketSize;
836 info.type = get_r8a66597_type(ep->bmAttributes
837 & USB_ENDPOINT_XFERTYPE_MASK);
838 info.bufnum = get_bufnum(info.pipenum);
839 info.buf_bsize = get_buf_bsize(info.pipenum);
840 info.interval = ep->bInterval;
841 if (ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
842 info.dir_in = 1;
843 else
844 info.dir_in = 0;
845
846 enable_r8a66597_pipe(r8a66597, urb, hep, &info);
847 }
848
849 static void init_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
850 {
851 struct r8a66597_device *dev;
852
853 dev = get_urb_to_r8a66597_dev(r8a66597, urb);
854 dev->state = USB_STATE_CONFIGURED;
855 }
856
857 static void pipe_irq_enable(struct r8a66597 *r8a66597, struct urb *urb,
858 u16 pipenum)
859 {
860 if (pipenum == 0 && usb_pipeout(urb->pipe))
861 enable_irq_empty(r8a66597, pipenum);
862 else
863 enable_irq_ready(r8a66597, pipenum);
864
865 if (!usb_pipeisoc(urb->pipe))
866 enable_irq_nrdy(r8a66597, pipenum);
867 }
868
869 static void pipe_irq_disable(struct r8a66597 *r8a66597, u16 pipenum)
870 {
871 disable_irq_ready(r8a66597, pipenum);
872 disable_irq_nrdy(r8a66597, pipenum);
873 }
874
875 /* this function must be called with interrupt disabled */
876 static void r8a66597_usb_preconnect(struct r8a66597 *r8a66597, int port)
877 {
878 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_CONNECTION)
879 | (1 << USB_PORT_FEAT_C_CONNECTION);
880 r8a66597_write(r8a66597, ~DTCH, get_intsts_reg(port));
881 r8a66597_bset(r8a66597, DTCHE, get_intenb_reg(port));
882 }
883
884 /* this function must be called with interrupt disabled */
885 static void r8a66597_usb_connect(struct r8a66597 *r8a66597, int port)
886 {
887 u16 speed = get_rh_usb_speed(r8a66597, port);
888 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
889
890 if (speed == HSMODE)
891 rh->port |= (1 << USB_PORT_FEAT_HIGHSPEED);
892 else if (speed == LSMODE)
893 rh->port |= (1 << USB_PORT_FEAT_LOWSPEED);
894
895 rh->port &= ~(1 << USB_PORT_FEAT_RESET);
896 rh->port |= 1 << USB_PORT_FEAT_ENABLE;
897 }
898
899 /* this function must be called with interrupt disabled */
900 static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
901 {
902 struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
903
904 r8a66597->root_hub[port].port &= ~(1 << USB_PORT_FEAT_CONNECTION);
905 r8a66597->root_hub[port].port |= (1 << USB_PORT_FEAT_C_CONNECTION);
906
907 disable_r8a66597_pipe_all(r8a66597, dev);
908 free_usb_address(r8a66597, dev);
909
910 r8a66597_bset(r8a66597, ATTCHE, get_intenb_reg(port));
911 }
912
913 /* this function must be called with interrupt disabled */
914 static void prepare_setup_packet(struct r8a66597 *r8a66597,
915 struct r8a66597_td *td)
916 {
917 int i;
918 u16 *p = (u16 *)td->urb->setup_packet;
919 unsigned long setup_addr = USBREQ;
920
921 r8a66597_write(r8a66597, make_devsel(td->address) | td->maxpacket,
922 DCPMAXP);
923 r8a66597_write(r8a66597, ~(SIGN | SACK), INTSTS1);
924
925 for (i = 0; i < 4; i++) {
926 r8a66597_write(r8a66597, p[i], setup_addr);
927 setup_addr += 2;
928 }
929 r8a66597_write(r8a66597, SUREQ, DCPCTR);
930 }
931
932 /* this function must be called with interrupt disabled */
933 static void prepare_packet_read(struct r8a66597 *r8a66597,
934 struct r8a66597_td *td)
935 {
936 struct urb *urb = td->urb;
937
938 if (usb_pipecontrol(urb->pipe)) {
939 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
940 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
941 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
942 if (urb->actual_length == 0) {
943 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
944 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
945 }
946 pipe_irq_disable(r8a66597, td->pipenum);
947 pipe_start(r8a66597, td->pipe);
948 pipe_irq_enable(r8a66597, urb, td->pipenum);
949 } else {
950 if (urb->actual_length == 0) {
951 pipe_irq_disable(r8a66597, td->pipenum);
952 pipe_setting(r8a66597, td);
953 pipe_stop(r8a66597, td->pipe);
954 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
955
956 if (td->pipe->pipetre) {
957 r8a66597_write(r8a66597, TRCLR,
958 td->pipe->pipetre);
959 r8a66597_write(r8a66597,
960 (urb->transfer_buffer_length
961 + td->maxpacket - 1)
962 / td->maxpacket,
963 td->pipe->pipetrn);
964 r8a66597_bset(r8a66597, TRENB,
965 td->pipe->pipetre);
966 }
967
968 pipe_start(r8a66597, td->pipe);
969 pipe_irq_enable(r8a66597, urb, td->pipenum);
970 }
971 }
972 }
973
974 /* this function must be called with interrupt disabled */
975 static void prepare_packet_write(struct r8a66597 *r8a66597,
976 struct r8a66597_td *td)
977 {
978 u16 tmp;
979 struct urb *urb = td->urb;
980
981 if (usb_pipecontrol(urb->pipe)) {
982 pipe_stop(r8a66597, td->pipe);
983 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
984 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
985 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
986 if (urb->actual_length == 0) {
987 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
988 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
989 }
990 } else {
991 if (urb->actual_length == 0)
992 pipe_setting(r8a66597, td);
993 if (td->pipe->pipetre)
994 r8a66597_bclr(r8a66597, TRENB, td->pipe->pipetre);
995 }
996 r8a66597_write(r8a66597, ~(1 << td->pipenum), BRDYSTS);
997
998 fifo_change_from_pipe(r8a66597, td->pipe);
999 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1000 if (unlikely((tmp & FRDY) == 0))
1001 pipe_irq_enable(r8a66597, urb, td->pipenum);
1002 else
1003 packet_write(r8a66597, td->pipenum);
1004 pipe_start(r8a66597, td->pipe);
1005 }
1006
1007 /* this function must be called with interrupt disabled */
1008 static void prepare_status_packet(struct r8a66597 *r8a66597,
1009 struct r8a66597_td *td)
1010 {
1011 struct urb *urb = td->urb;
1012
1013 r8a66597_pipe_toggle(r8a66597, td->pipe, 1);
1014 pipe_stop(r8a66597, td->pipe);
1015
1016 if (urb->setup_packet[0] & USB_ENDPOINT_DIR_MASK) {
1017 r8a66597_bset(r8a66597, R8A66597_DIR, DCPCFG);
1018 r8a66597_mdfy(r8a66597, ISEL, ISEL | CURPIPE, CFIFOSEL);
1019 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1020 r8a66597_write(r8a66597, ~BEMP0, BEMPSTS);
1021 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1022 r8a66597_write(r8a66597, BVAL, CFIFOCTR);
1023 enable_irq_empty(r8a66597, 0);
1024 } else {
1025 r8a66597_bclr(r8a66597, R8A66597_DIR, DCPCFG);
1026 r8a66597_mdfy(r8a66597, 0, ISEL | CURPIPE, CFIFOSEL);
1027 r8a66597_reg_wait(r8a66597, CFIFOSEL, CURPIPE, 0);
1028 r8a66597_write(r8a66597, BCLR, CFIFOCTR);
1029 enable_irq_ready(r8a66597, 0);
1030 }
1031 enable_irq_nrdy(r8a66597, 0);
1032 pipe_start(r8a66597, td->pipe);
1033 }
1034
1035 /* this function must be called with interrupt disabled */
1036 static int start_transfer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1037 {
1038 BUG_ON(!td);
1039
1040 switch (td->type) {
1041 case USB_PID_SETUP:
1042 if (td->urb->setup_packet[1] == USB_REQ_SET_ADDRESS) {
1043 td->set_address = 1;
1044 td->urb->setup_packet[2] = alloc_usb_address(r8a66597,
1045 td->urb);
1046 if (td->urb->setup_packet[2] == 0)
1047 return -EPIPE;
1048 }
1049 prepare_setup_packet(r8a66597, td);
1050 break;
1051 case USB_PID_IN:
1052 prepare_packet_read(r8a66597, td);
1053 break;
1054 case USB_PID_OUT:
1055 prepare_packet_write(r8a66597, td);
1056 break;
1057 case USB_PID_ACK:
1058 prepare_status_packet(r8a66597, td);
1059 break;
1060 default:
1061 err("invalid type.");
1062 break;
1063 }
1064
1065 return 0;
1066 }
1067
1068 static int check_transfer_finish(struct r8a66597_td *td, struct urb *urb)
1069 {
1070 if (usb_pipeisoc(urb->pipe)) {
1071 if (urb->number_of_packets == td->iso_cnt)
1072 return 1;
1073 }
1074
1075 /* control or bulk or interrupt */
1076 if ((urb->transfer_buffer_length <= urb->actual_length) ||
1077 (td->short_packet) || (td->zero_packet))
1078 return 1;
1079
1080 return 0;
1081 }
1082
1083 /* this function must be called with interrupt disabled */
1084 static void set_td_timer(struct r8a66597 *r8a66597, struct r8a66597_td *td)
1085 {
1086 unsigned long time;
1087
1088 BUG_ON(!td);
1089
1090 if (!list_empty(&r8a66597->pipe_queue[td->pipenum]) &&
1091 !usb_pipecontrol(td->urb->pipe) && usb_pipein(td->urb->pipe)) {
1092 r8a66597->timeout_map |= 1 << td->pipenum;
1093 switch (usb_pipetype(td->urb->pipe)) {
1094 case PIPE_INTERRUPT:
1095 case PIPE_ISOCHRONOUS:
1096 time = 30;
1097 break;
1098 default:
1099 time = 300;
1100 break;
1101 }
1102
1103 mod_timer(&r8a66597->td_timer[td->pipenum],
1104 jiffies + msecs_to_jiffies(time));
1105 }
1106 }
1107
1108 /* this function must be called with interrupt disabled */
1109 static void done(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1110 u16 pipenum, struct urb *urb)
1111 {
1112 int restart = 0;
1113 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
1114
1115 r8a66597->timeout_map &= ~(1 << pipenum);
1116
1117 if (likely(td)) {
1118 if (td->set_address && urb->status != 0)
1119 r8a66597->address_map &= ~(1 << urb->setup_packet[2]);
1120
1121 pipe_toggle_save(r8a66597, td->pipe, urb);
1122 list_del(&td->queue);
1123 kfree(td);
1124 }
1125
1126 if (!list_empty(&r8a66597->pipe_queue[pipenum]))
1127 restart = 1;
1128
1129 if (likely(urb)) {
1130 if (usb_pipeisoc(urb->pipe))
1131 urb->start_frame = r8a66597_get_frame(hcd);
1132
1133 urb->hcpriv = NULL;
1134 spin_unlock(&r8a66597->lock);
1135 usb_hcd_giveback_urb(hcd, urb);
1136 spin_lock(&r8a66597->lock);
1137 }
1138
1139 if (restart) {
1140 td = r8a66597_get_td(r8a66597, pipenum);
1141 if (unlikely(!td))
1142 return;
1143
1144 start_transfer(r8a66597, td);
1145 set_td_timer(r8a66597, td);
1146 }
1147 }
1148
1149 /* this function must be called with interrupt disabled */
1150 static void finish_request(struct r8a66597 *r8a66597, struct r8a66597_td *td,
1151 u16 pipenum, struct urb *urb)
1152 __releases(r8a66597->lock) __acquires(r8a66597->lock)
1153 {
1154 done(r8a66597, td, pipenum, urb);
1155 }
1156
1157 static void packet_read(struct r8a66597 *r8a66597, u16 pipenum)
1158 {
1159 u16 tmp;
1160 int rcv_len, bufsize, urb_len, size;
1161 u16 *buf;
1162 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1163 struct urb *urb;
1164 int finish = 0;
1165
1166 if (unlikely(!td))
1167 return;
1168 urb = td->urb;
1169
1170 fifo_change_from_pipe(r8a66597, td->pipe);
1171 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1172 if (unlikely((tmp & FRDY) == 0)) {
1173 urb->status = -EPIPE;
1174 pipe_stop(r8a66597, td->pipe);
1175 pipe_irq_disable(r8a66597, pipenum);
1176 err("in fifo not ready (%d)", pipenum);
1177 finish_request(r8a66597, td, pipenum, td->urb);
1178 return;
1179 }
1180
1181 /* prepare parameters */
1182 rcv_len = tmp & DTLN;
1183 bufsize = td->maxpacket;
1184 if (usb_pipeisoc(urb->pipe)) {
1185 buf = (u16 *)(urb->transfer_buffer +
1186 urb->iso_frame_desc[td->iso_cnt].offset);
1187 urb_len = urb->iso_frame_desc[td->iso_cnt].length;
1188 } else {
1189 buf = (void *)urb->transfer_buffer + urb->actual_length;
1190 urb_len = urb->transfer_buffer_length - urb->actual_length;
1191 }
1192 if (rcv_len < bufsize)
1193 size = min(rcv_len, urb_len);
1194 else
1195 size = min(bufsize, urb_len);
1196
1197 /* update parameters */
1198 urb->actual_length += size;
1199 if (rcv_len == 0)
1200 td->zero_packet = 1;
1201 if ((size % td->maxpacket) > 0) {
1202 td->short_packet = 1;
1203 if (urb->transfer_buffer_length != urb->actual_length &&
1204 urb->transfer_flags & URB_SHORT_NOT_OK)
1205 td->urb->status = -EREMOTEIO;
1206 }
1207 if (usb_pipeisoc(urb->pipe)) {
1208 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1209 urb->iso_frame_desc[td->iso_cnt].status = 0;
1210 td->iso_cnt++;
1211 }
1212
1213 /* check transfer finish */
1214 if (check_transfer_finish(td, urb)) {
1215 pipe_stop(r8a66597, td->pipe);
1216 pipe_irq_disable(r8a66597, pipenum);
1217 finish = 1;
1218 }
1219
1220 /* read fifo */
1221 if (urb->transfer_buffer) {
1222 if (size == 0)
1223 r8a66597_write(r8a66597, BCLR, td->pipe->fifoctr);
1224 else
1225 r8a66597_read_fifo(r8a66597, td->pipe->fifoaddr,
1226 buf, size);
1227 }
1228
1229 if (finish && pipenum != 0) {
1230 if (td->urb->status == -EINPROGRESS)
1231 td->urb->status = 0;
1232 finish_request(r8a66597, td, pipenum, urb);
1233 }
1234 }
1235
1236 static void packet_write(struct r8a66597 *r8a66597, u16 pipenum)
1237 {
1238 u16 tmp;
1239 int bufsize, size;
1240 u16 *buf;
1241 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1242 struct urb *urb;
1243
1244 if (unlikely(!td))
1245 return;
1246 urb = td->urb;
1247
1248 fifo_change_from_pipe(r8a66597, td->pipe);
1249 tmp = r8a66597_read(r8a66597, td->pipe->fifoctr);
1250 if (unlikely((tmp & FRDY) == 0)) {
1251 urb->status = -EPIPE;
1252 pipe_stop(r8a66597, td->pipe);
1253 pipe_irq_disable(r8a66597, pipenum);
1254 err("out write fifo not ready. (%d)", pipenum);
1255 finish_request(r8a66597, td, pipenum, td->urb);
1256 return;
1257 }
1258
1259 /* prepare parameters */
1260 bufsize = td->maxpacket;
1261 if (usb_pipeisoc(urb->pipe)) {
1262 buf = (u16 *)(urb->transfer_buffer +
1263 urb->iso_frame_desc[td->iso_cnt].offset);
1264 size = min(bufsize,
1265 (int)urb->iso_frame_desc[td->iso_cnt].length);
1266 } else {
1267 buf = (u16 *)(urb->transfer_buffer + urb->actual_length);
1268 size = min((int)bufsize,
1269 urb->transfer_buffer_length - urb->actual_length);
1270 }
1271
1272 /* write fifo */
1273 if (pipenum > 0)
1274 r8a66597_write(r8a66597, ~(1 << pipenum), BEMPSTS);
1275 if (urb->transfer_buffer) {
1276 r8a66597_write_fifo(r8a66597, td->pipe->fifoaddr, buf, size);
1277 if (!usb_pipebulk(urb->pipe) || td->maxpacket != size)
1278 r8a66597_write(r8a66597, BVAL, td->pipe->fifoctr);
1279 }
1280
1281 /* update parameters */
1282 urb->actual_length += size;
1283 if (usb_pipeisoc(urb->pipe)) {
1284 urb->iso_frame_desc[td->iso_cnt].actual_length = size;
1285 urb->iso_frame_desc[td->iso_cnt].status = 0;
1286 td->iso_cnt++;
1287 }
1288
1289 /* check transfer finish */
1290 if (check_transfer_finish(td, urb)) {
1291 disable_irq_ready(r8a66597, pipenum);
1292 enable_irq_empty(r8a66597, pipenum);
1293 if (!usb_pipeisoc(urb->pipe))
1294 enable_irq_nrdy(r8a66597, pipenum);
1295 } else
1296 pipe_irq_enable(r8a66597, urb, pipenum);
1297 }
1298
1299
1300 static void check_next_phase(struct r8a66597 *r8a66597)
1301 {
1302 struct r8a66597_td *td = r8a66597_get_td(r8a66597, 0);
1303 struct urb *urb;
1304 u8 finish = 0;
1305
1306 if (unlikely(!td))
1307 return;
1308 urb = td->urb;
1309
1310 switch (td->type) {
1311 case USB_PID_IN:
1312 case USB_PID_OUT:
1313 if (urb->status != -EINPROGRESS) {
1314 finish = 1;
1315 break;
1316 }
1317 if (check_transfer_finish(td, urb))
1318 td->type = USB_PID_ACK;
1319 break;
1320 case USB_PID_SETUP:
1321 if (urb->status != -EINPROGRESS)
1322 finish = 1;
1323 else if (urb->transfer_buffer_length == urb->actual_length) {
1324 td->type = USB_PID_ACK;
1325 urb->status = 0;
1326 } else if (usb_pipeout(urb->pipe))
1327 td->type = USB_PID_OUT;
1328 else
1329 td->type = USB_PID_IN;
1330 break;
1331 case USB_PID_ACK:
1332 finish = 1;
1333 if (urb->status == -EINPROGRESS)
1334 urb->status = 0;
1335 break;
1336 }
1337
1338 if (finish)
1339 finish_request(r8a66597, td, 0, urb);
1340 else
1341 start_transfer(r8a66597, td);
1342 }
1343
1344 static void set_urb_error(struct r8a66597 *r8a66597, u16 pipenum)
1345 {
1346 struct r8a66597_td *td = r8a66597_get_td(r8a66597, pipenum);
1347
1348 if (td && td->urb) {
1349 u16 pid = r8a66597_read(r8a66597, td->pipe->pipectr) & PID;
1350
1351 if (pid == PID_NAK)
1352 td->urb->status = -ECONNRESET;
1353 else
1354 td->urb->status = -EPIPE;
1355 }
1356 }
1357
1358 static void irq_pipe_ready(struct r8a66597 *r8a66597)
1359 {
1360 u16 check;
1361 u16 pipenum;
1362 u16 mask;
1363 struct r8a66597_td *td;
1364
1365 mask = r8a66597_read(r8a66597, BRDYSTS)
1366 & r8a66597_read(r8a66597, BRDYENB);
1367 r8a66597_write(r8a66597, ~mask, BRDYSTS);
1368 if (mask & BRDY0) {
1369 td = r8a66597_get_td(r8a66597, 0);
1370 if (td && td->type == USB_PID_IN)
1371 packet_read(r8a66597, 0);
1372 else
1373 pipe_irq_disable(r8a66597, 0);
1374 check_next_phase(r8a66597);
1375 }
1376
1377 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1378 check = 1 << pipenum;
1379 if (mask & check) {
1380 td = r8a66597_get_td(r8a66597, pipenum);
1381 if (unlikely(!td))
1382 continue;
1383
1384 if (td->type == USB_PID_IN)
1385 packet_read(r8a66597, pipenum);
1386 else if (td->type == USB_PID_OUT)
1387 packet_write(r8a66597, pipenum);
1388 }
1389 }
1390 }
1391
1392 static void irq_pipe_empty(struct r8a66597 *r8a66597)
1393 {
1394 u16 tmp;
1395 u16 check;
1396 u16 pipenum;
1397 u16 mask;
1398 struct r8a66597_td *td;
1399
1400 mask = r8a66597_read(r8a66597, BEMPSTS)
1401 & r8a66597_read(r8a66597, BEMPENB);
1402 r8a66597_write(r8a66597, ~mask, BEMPSTS);
1403 if (mask & BEMP0) {
1404 cfifo_change(r8a66597, 0);
1405 td = r8a66597_get_td(r8a66597, 0);
1406 if (td && td->type != USB_PID_OUT)
1407 disable_irq_empty(r8a66597, 0);
1408 check_next_phase(r8a66597);
1409 }
1410
1411 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1412 check = 1 << pipenum;
1413 if (mask & check) {
1414 struct r8a66597_td *td;
1415 td = r8a66597_get_td(r8a66597, pipenum);
1416 if (unlikely(!td))
1417 continue;
1418
1419 tmp = r8a66597_read(r8a66597, td->pipe->pipectr);
1420 if ((tmp & INBUFM) == 0) {
1421 disable_irq_empty(r8a66597, pipenum);
1422 pipe_irq_disable(r8a66597, pipenum);
1423 if (td->urb->status == -EINPROGRESS)
1424 td->urb->status = 0;
1425 finish_request(r8a66597, td, pipenum, td->urb);
1426 }
1427 }
1428 }
1429 }
1430
1431 static void irq_pipe_nrdy(struct r8a66597 *r8a66597)
1432 {
1433 u16 check;
1434 u16 pipenum;
1435 u16 mask;
1436
1437 mask = r8a66597_read(r8a66597, NRDYSTS)
1438 & r8a66597_read(r8a66597, NRDYENB);
1439 r8a66597_write(r8a66597, ~mask, NRDYSTS);
1440 if (mask & NRDY0) {
1441 cfifo_change(r8a66597, 0);
1442 set_urb_error(r8a66597, 0);
1443 pipe_irq_disable(r8a66597, 0);
1444 check_next_phase(r8a66597);
1445 }
1446
1447 for (pipenum = 1; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1448 check = 1 << pipenum;
1449 if (mask & check) {
1450 struct r8a66597_td *td;
1451 td = r8a66597_get_td(r8a66597, pipenum);
1452 if (unlikely(!td))
1453 continue;
1454
1455 set_urb_error(r8a66597, pipenum);
1456 pipe_irq_disable(r8a66597, pipenum);
1457 pipe_stop(r8a66597, td->pipe);
1458 finish_request(r8a66597, td, pipenum, td->urb);
1459 }
1460 }
1461 }
1462
1463 static void start_root_hub_sampling(struct r8a66597 *r8a66597, int port)
1464 {
1465 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1466
1467 rh->old_syssts = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1468 rh->scount = R8A66597_MAX_SAMPLING;
1469 mod_timer(&r8a66597->rh_timer, jiffies + msecs_to_jiffies(50));
1470 }
1471
1472 static irqreturn_t r8a66597_irq(struct usb_hcd *hcd)
1473 {
1474 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1475 u16 intsts0, intsts1, intsts2;
1476 u16 intenb0, intenb1, intenb2;
1477 u16 mask0, mask1, mask2;
1478
1479 spin_lock(&r8a66597->lock);
1480
1481 intsts0 = r8a66597_read(r8a66597, INTSTS0);
1482 intsts1 = r8a66597_read(r8a66597, INTSTS1);
1483 intsts2 = r8a66597_read(r8a66597, INTSTS2);
1484 intenb0 = r8a66597_read(r8a66597, INTENB0);
1485 intenb1 = r8a66597_read(r8a66597, INTENB1);
1486 intenb2 = r8a66597_read(r8a66597, INTENB2);
1487
1488 mask2 = intsts2 & intenb2;
1489 mask1 = intsts1 & intenb1;
1490 mask0 = intsts0 & intenb0 & (BEMP | NRDY | BRDY);
1491 if (mask2) {
1492 if (mask2 & ATTCH) {
1493 r8a66597_write(r8a66597, ~ATTCH, INTSTS2);
1494 r8a66597_bclr(r8a66597, ATTCHE, INTENB2);
1495
1496 /* start usb bus sampling */
1497 start_root_hub_sampling(r8a66597, 1);
1498 }
1499 if (mask2 & DTCH) {
1500 r8a66597_write(r8a66597, ~DTCH, INTSTS2);
1501 r8a66597_bclr(r8a66597, DTCHE, INTENB2);
1502 r8a66597_usb_disconnect(r8a66597, 1);
1503 }
1504 }
1505
1506 if (mask1) {
1507 if (mask1 & ATTCH) {
1508 r8a66597_write(r8a66597, ~ATTCH, INTSTS1);
1509 r8a66597_bclr(r8a66597, ATTCHE, INTENB1);
1510
1511 /* start usb bus sampling */
1512 start_root_hub_sampling(r8a66597, 0);
1513 }
1514 if (mask1 & DTCH) {
1515 r8a66597_write(r8a66597, ~DTCH, INTSTS1);
1516 r8a66597_bclr(r8a66597, DTCHE, INTENB1);
1517 r8a66597_usb_disconnect(r8a66597, 0);
1518 }
1519 if (mask1 & SIGN) {
1520 r8a66597_write(r8a66597, ~SIGN, INTSTS1);
1521 set_urb_error(r8a66597, 0);
1522 check_next_phase(r8a66597);
1523 }
1524 if (mask1 & SACK) {
1525 r8a66597_write(r8a66597, ~SACK, INTSTS1);
1526 check_next_phase(r8a66597);
1527 }
1528 }
1529 if (mask0) {
1530 if (mask0 & BRDY)
1531 irq_pipe_ready(r8a66597);
1532 if (mask0 & BEMP)
1533 irq_pipe_empty(r8a66597);
1534 if (mask0 & NRDY)
1535 irq_pipe_nrdy(r8a66597);
1536 }
1537
1538 spin_unlock(&r8a66597->lock);
1539 return IRQ_HANDLED;
1540 }
1541
1542 /* this function must be called with interrupt disabled */
1543 static void r8a66597_root_hub_control(struct r8a66597 *r8a66597, int port)
1544 {
1545 u16 tmp;
1546 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1547
1548 if (rh->port & (1 << USB_PORT_FEAT_RESET)) {
1549 unsigned long dvstctr_reg = get_dvstctr_reg(port);
1550
1551 tmp = r8a66597_read(r8a66597, dvstctr_reg);
1552 if ((tmp & USBRST) == USBRST) {
1553 r8a66597_mdfy(r8a66597, UACT, USBRST | UACT,
1554 dvstctr_reg);
1555 mod_timer(&r8a66597->rh_timer,
1556 jiffies + msecs_to_jiffies(50));
1557 } else
1558 r8a66597_usb_connect(r8a66597, port);
1559 }
1560
1561 if (rh->scount > 0) {
1562 tmp = r8a66597_read(r8a66597, get_syssts_reg(port)) & LNST;
1563 if (tmp == rh->old_syssts) {
1564 rh->scount--;
1565 if (rh->scount == 0) {
1566 if (tmp == FS_JSTS) {
1567 r8a66597_bset(r8a66597, HSE,
1568 get_syscfg_reg(port));
1569 r8a66597_usb_preconnect(r8a66597, port);
1570 } else if (tmp == LS_JSTS) {
1571 r8a66597_bclr(r8a66597, HSE,
1572 get_syscfg_reg(port));
1573 r8a66597_usb_preconnect(r8a66597, port);
1574 } else if (tmp == SE0)
1575 r8a66597_bset(r8a66597, ATTCHE,
1576 get_intenb_reg(port));
1577 } else {
1578 mod_timer(&r8a66597->rh_timer,
1579 jiffies + msecs_to_jiffies(50));
1580 }
1581 } else {
1582 rh->scount = R8A66597_MAX_SAMPLING;
1583 rh->old_syssts = tmp;
1584 mod_timer(&r8a66597->rh_timer,
1585 jiffies + msecs_to_jiffies(50));
1586 }
1587 }
1588 }
1589
1590 static void r8a66597_td_timer(unsigned long _r8a66597)
1591 {
1592 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1593 unsigned long flags;
1594 u16 pipenum;
1595 struct r8a66597_td *td, *new_td = NULL;
1596 struct r8a66597_pipe *pipe;
1597
1598 spin_lock_irqsave(&r8a66597->lock, flags);
1599 for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
1600 if (!(r8a66597->timeout_map & (1 << pipenum)))
1601 continue;
1602 if (timer_pending(&r8a66597->td_timer[pipenum]))
1603 continue;
1604
1605 td = r8a66597_get_td(r8a66597, pipenum);
1606 if (!td) {
1607 r8a66597->timeout_map &= ~(1 << pipenum);
1608 continue;
1609 }
1610
1611 if (td->urb->actual_length) {
1612 set_td_timer(r8a66597, td);
1613 break;
1614 }
1615
1616 pipe = td->pipe;
1617 pipe_stop(r8a66597, pipe);
1618
1619 new_td = td;
1620 do {
1621 list_move_tail(&new_td->queue,
1622 &r8a66597->pipe_queue[pipenum]);
1623 new_td = r8a66597_get_td(r8a66597, pipenum);
1624 if (!new_td) {
1625 new_td = td;
1626 break;
1627 }
1628 } while (td != new_td && td->address == new_td->address);
1629
1630 start_transfer(r8a66597, new_td);
1631
1632 if (td == new_td)
1633 r8a66597->timeout_map &= ~(1 << pipenum);
1634 else
1635 set_td_timer(r8a66597, new_td);
1636 break;
1637 }
1638 spin_unlock_irqrestore(&r8a66597->lock, flags);
1639 }
1640
1641 static void r8a66597_timer(unsigned long _r8a66597)
1642 {
1643 struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
1644 unsigned long flags;
1645
1646 spin_lock_irqsave(&r8a66597->lock, flags);
1647
1648 r8a66597_root_hub_control(r8a66597, 0);
1649 r8a66597_root_hub_control(r8a66597, 1);
1650
1651 spin_unlock_irqrestore(&r8a66597->lock, flags);
1652 }
1653
1654 static int check_pipe_config(struct r8a66597 *r8a66597, struct urb *urb)
1655 {
1656 struct r8a66597_device *dev = get_urb_to_r8a66597_dev(r8a66597, urb);
1657
1658 if (dev && dev->address && dev->state != USB_STATE_CONFIGURED &&
1659 (urb->dev->state == USB_STATE_CONFIGURED))
1660 return 1;
1661 else
1662 return 0;
1663 }
1664
1665 static int r8a66597_start(struct usb_hcd *hcd)
1666 {
1667 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1668
1669 hcd->state = HC_STATE_RUNNING;
1670 return enable_controller(r8a66597);
1671 }
1672
1673 static void r8a66597_stop(struct usb_hcd *hcd)
1674 {
1675 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1676
1677 disable_controller(r8a66597);
1678 }
1679
1680 static void set_address_zero(struct r8a66597 *r8a66597, struct urb *urb)
1681 {
1682 unsigned int usb_address = usb_pipedevice(urb->pipe);
1683 u16 root_port, hub_port;
1684
1685 if (usb_address == 0) {
1686 get_port_number(urb->dev->devpath,
1687 &root_port, &hub_port);
1688 set_devadd_reg(r8a66597, 0,
1689 get_r8a66597_usb_speed(urb->dev->speed),
1690 get_parent_r8a66597_address(r8a66597, urb->dev),
1691 hub_port, root_port);
1692 }
1693 }
1694
1695 static struct r8a66597_td *r8a66597_make_td(struct r8a66597 *r8a66597,
1696 struct urb *urb,
1697 struct usb_host_endpoint *hep)
1698 {
1699 struct r8a66597_td *td;
1700 u16 pipenum;
1701
1702 td = kzalloc(sizeof(struct r8a66597_td), GFP_ATOMIC);
1703 if (td == NULL)
1704 return NULL;
1705
1706 pipenum = r8a66597_get_pipenum(urb, hep);
1707 td->pipenum = pipenum;
1708 td->pipe = hep->hcpriv;
1709 td->urb = urb;
1710 td->address = get_urb_to_r8a66597_addr(r8a66597, urb);
1711 td->maxpacket = usb_maxpacket(urb->dev, urb->pipe,
1712 !usb_pipein(urb->pipe));
1713 if (usb_pipecontrol(urb->pipe))
1714 td->type = USB_PID_SETUP;
1715 else if (usb_pipein(urb->pipe))
1716 td->type = USB_PID_IN;
1717 else
1718 td->type = USB_PID_OUT;
1719 INIT_LIST_HEAD(&td->queue);
1720
1721 return td;
1722 }
1723
1724 static int r8a66597_urb_enqueue(struct usb_hcd *hcd,
1725 struct usb_host_endpoint *hep,
1726 struct urb *urb,
1727 gfp_t mem_flags)
1728 {
1729 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1730 struct r8a66597_td *td = NULL;
1731 int ret = 0, request = 0;
1732 unsigned long flags;
1733
1734 spin_lock_irqsave(&r8a66597->lock, flags);
1735 if (!get_urb_to_r8a66597_dev(r8a66597, urb)) {
1736 ret = -ENODEV;
1737 goto error;
1738 }
1739
1740 if (!hep->hcpriv) {
1741 hep->hcpriv = kzalloc(sizeof(struct r8a66597_pipe),
1742 GFP_ATOMIC);
1743 if (!hep->hcpriv) {
1744 ret = -ENOMEM;
1745 goto error;
1746 }
1747 set_pipe_reg_addr(hep->hcpriv, R8A66597_PIPE_NO_DMA);
1748 if (usb_pipeendpoint(urb->pipe))
1749 init_pipe_info(r8a66597, urb, hep, &hep->desc);
1750 }
1751
1752 if (unlikely(check_pipe_config(r8a66597, urb)))
1753 init_pipe_config(r8a66597, urb);
1754
1755 set_address_zero(r8a66597, urb);
1756 td = r8a66597_make_td(r8a66597, urb, hep);
1757 if (td == NULL) {
1758 ret = -ENOMEM;
1759 goto error;
1760 }
1761 if (list_empty(&r8a66597->pipe_queue[td->pipenum]))
1762 request = 1;
1763 list_add_tail(&td->queue, &r8a66597->pipe_queue[td->pipenum]);
1764
1765 spin_lock(&urb->lock);
1766 if (urb->status != -EINPROGRESS) {
1767 spin_unlock(&urb->lock);
1768 ret = -EPIPE;
1769 goto error;
1770 }
1771 urb->hcpriv = td;
1772 spin_unlock(&urb->lock);
1773
1774 if (request) {
1775 ret = start_transfer(r8a66597, td);
1776 if (ret < 0) {
1777 list_del(&td->queue);
1778 kfree(td);
1779 }
1780 } else
1781 set_td_timer(r8a66597, td);
1782
1783 error:
1784 spin_unlock_irqrestore(&r8a66597->lock, flags);
1785 return ret;
1786 }
1787
1788 static int r8a66597_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
1789 {
1790 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1791 struct r8a66597_td *td;
1792 unsigned long flags;
1793
1794 spin_lock_irqsave(&r8a66597->lock, flags);
1795 if (urb->hcpriv) {
1796 td = urb->hcpriv;
1797 pipe_stop(r8a66597, td->pipe);
1798 pipe_irq_disable(r8a66597, td->pipenum);
1799 disable_irq_empty(r8a66597, td->pipenum);
1800 done(r8a66597, td, td->pipenum, urb);
1801 }
1802 spin_unlock_irqrestore(&r8a66597->lock, flags);
1803 return 0;
1804 }
1805
1806 static void r8a66597_endpoint_disable(struct usb_hcd *hcd,
1807 struct usb_host_endpoint *hep)
1808 {
1809 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1810 struct r8a66597_pipe *pipe = (struct r8a66597_pipe *)hep->hcpriv;
1811 struct r8a66597_td *td;
1812 struct urb *urb = NULL;
1813 u16 pipenum;
1814 unsigned long flags;
1815
1816 if (pipe == NULL)
1817 return;
1818 pipenum = pipe->info.pipenum;
1819
1820 if (pipenum == 0) {
1821 kfree(hep->hcpriv);
1822 hep->hcpriv = NULL;
1823 return;
1824 }
1825
1826 spin_lock_irqsave(&r8a66597->lock, flags);
1827 pipe_stop(r8a66597, pipe);
1828 pipe_irq_disable(r8a66597, pipenum);
1829 disable_irq_empty(r8a66597, pipenum);
1830 td = r8a66597_get_td(r8a66597, pipenum);
1831 if (td)
1832 urb = td->urb;
1833 done(r8a66597, td, pipenum, urb);
1834 kfree(hep->hcpriv);
1835 hep->hcpriv = NULL;
1836 spin_unlock_irqrestore(&r8a66597->lock, flags);
1837 }
1838
1839 static int r8a66597_get_frame(struct usb_hcd *hcd)
1840 {
1841 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1842 return r8a66597_read(r8a66597, FRMNUM) & 0x03FF;
1843 }
1844
1845 static void collect_usb_address_map(struct usb_device *udev, unsigned long *map)
1846 {
1847 int chix;
1848
1849 if (udev->state == USB_STATE_CONFIGURED &&
1850 udev->parent && udev->parent->devnum > 1 &&
1851 udev->parent->descriptor.bDeviceClass == USB_CLASS_HUB)
1852 map[udev->devnum/32] |= (1 << (udev->devnum % 32));
1853
1854 for (chix = 0; chix < udev->maxchild; chix++) {
1855 struct usb_device *childdev = udev->children[chix];
1856
1857 if (childdev)
1858 collect_usb_address_map(childdev, map);
1859 }
1860 }
1861
1862 /* this function must be called with interrupt disabled */
1863 static struct r8a66597_device *get_r8a66597_device(struct r8a66597 *r8a66597,
1864 int addr)
1865 {
1866 struct r8a66597_device *dev;
1867 struct list_head *list = &r8a66597->child_device;
1868
1869 list_for_each_entry(dev, list, device_list) {
1870 if (!dev)
1871 continue;
1872 if (dev->usb_address != addr)
1873 continue;
1874
1875 return dev;
1876 }
1877
1878 err("get_r8a66597_device fail.(%d)\n", addr);
1879 return NULL;
1880 }
1881
1882 static void update_usb_address_map(struct r8a66597 *r8a66597,
1883 struct usb_device *root_hub,
1884 unsigned long *map)
1885 {
1886 int i, j, addr;
1887 unsigned long diff;
1888 unsigned long flags;
1889
1890 for (i = 0; i < 4; i++) {
1891 diff = r8a66597->child_connect_map[i] ^ map[i];
1892 if (!diff)
1893 continue;
1894
1895 for (j = 0; j < 32; j++) {
1896 if (!(diff & (1 << j)))
1897 continue;
1898
1899 addr = i * 32 + j;
1900 if (map[i] & (1 << j))
1901 set_child_connect_map(r8a66597, addr);
1902 else {
1903 struct r8a66597_device *dev;
1904
1905 spin_lock_irqsave(&r8a66597->lock, flags);
1906 dev = get_r8a66597_device(r8a66597, addr);
1907 disable_r8a66597_pipe_all(r8a66597, dev);
1908 free_usb_address(r8a66597, dev);
1909 put_child_connect_map(r8a66597, addr);
1910 spin_unlock_irqrestore(&r8a66597->lock, flags);
1911 }
1912 }
1913 }
1914 }
1915
1916 static void r8a66597_check_detect_child(struct r8a66597 *r8a66597,
1917 struct usb_hcd *hcd)
1918 {
1919 struct usb_bus *bus;
1920 unsigned long now_map[4];
1921
1922 memset(now_map, 0, sizeof(now_map));
1923
1924 list_for_each_entry(bus, &usb_bus_list, bus_list) {
1925 if (!bus->root_hub)
1926 continue;
1927
1928 if (bus->busnum != hcd->self.busnum)
1929 continue;
1930
1931 collect_usb_address_map(bus->root_hub, now_map);
1932 update_usb_address_map(r8a66597, bus->root_hub, now_map);
1933 }
1934 }
1935
1936 static int r8a66597_hub_status_data(struct usb_hcd *hcd, char *buf)
1937 {
1938 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1939 unsigned long flags;
1940 int i;
1941
1942 r8a66597_check_detect_child(r8a66597, hcd);
1943
1944 spin_lock_irqsave(&r8a66597->lock, flags);
1945
1946 *buf = 0; /* initialize (no change) */
1947
1948 for (i = 0; i < R8A66597_MAX_ROOT_HUB; i++) {
1949 if (r8a66597->root_hub[i].port & 0xffff0000)
1950 *buf |= 1 << (i + 1);
1951 }
1952
1953 spin_unlock_irqrestore(&r8a66597->lock, flags);
1954
1955 return (*buf != 0);
1956 }
1957
1958 static void r8a66597_hub_descriptor(struct r8a66597 *r8a66597,
1959 struct usb_hub_descriptor *desc)
1960 {
1961 desc->bDescriptorType = 0x29;
1962 desc->bHubContrCurrent = 0;
1963 desc->bNbrPorts = R8A66597_MAX_ROOT_HUB;
1964 desc->bDescLength = 9;
1965 desc->bPwrOn2PwrGood = 0;
1966 desc->wHubCharacteristics = cpu_to_le16(0x0011);
1967 desc->bitmap[0] = ((1 << R8A66597_MAX_ROOT_HUB) - 1) << 1;
1968 desc->bitmap[1] = ~0;
1969 }
1970
1971 static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
1972 u16 wIndex, char *buf, u16 wLength)
1973 {
1974 struct r8a66597 *r8a66597 = hcd_to_r8a66597(hcd);
1975 int ret;
1976 int port = (wIndex & 0x00FF) - 1;
1977 struct r8a66597_root_hub *rh = &r8a66597->root_hub[port];
1978 unsigned long flags;
1979
1980 ret = 0;
1981
1982 spin_lock_irqsave(&r8a66597->lock, flags);
1983 switch (typeReq) {
1984 case ClearHubFeature:
1985 case SetHubFeature:
1986 switch (wValue) {
1987 case C_HUB_OVER_CURRENT:
1988 case C_HUB_LOCAL_POWER:
1989 break;
1990 default:
1991 goto error;
1992 }
1993 break;
1994 case ClearPortFeature:
1995 if (wIndex > R8A66597_MAX_ROOT_HUB)
1996 goto error;
1997 if (wLength != 0)
1998 goto error;
1999
2000 switch (wValue) {
2001 case USB_PORT_FEAT_ENABLE:
2002 rh->port &= (1 << USB_PORT_FEAT_POWER);
2003 break;
2004 case USB_PORT_FEAT_SUSPEND:
2005 break;
2006 case USB_PORT_FEAT_POWER:
2007 r8a66597_port_power(r8a66597, port, 0);
2008 break;
2009 case USB_PORT_FEAT_C_ENABLE:
2010 case USB_PORT_FEAT_C_SUSPEND:
2011 case USB_PORT_FEAT_C_CONNECTION:
2012 case USB_PORT_FEAT_C_OVER_CURRENT:
2013 case USB_PORT_FEAT_C_RESET:
2014 break;
2015 default:
2016 goto error;
2017 }
2018 rh->port &= ~(1 << wValue);
2019 break;
2020 case GetHubDescriptor:
2021 r8a66597_hub_descriptor(r8a66597,
2022 (struct usb_hub_descriptor *)buf);
2023 break;
2024 case GetHubStatus:
2025 *buf = 0x00;
2026 break;
2027 case GetPortStatus:
2028 if (wIndex > R8A66597_MAX_ROOT_HUB)
2029 goto error;
2030 *(u32 *)buf = rh->port;
2031 break;
2032 case SetPortFeature:
2033 if (wIndex > R8A66597_MAX_ROOT_HUB)
2034 goto error;
2035 if (wLength != 0)
2036 goto error;
2037
2038 switch (wValue) {
2039 case USB_PORT_FEAT_SUSPEND:
2040 break;
2041 case USB_PORT_FEAT_POWER:
2042 r8a66597_port_power(r8a66597, port, 1);
2043 rh->port |= (1 << USB_PORT_FEAT_POWER);
2044 break;
2045 case USB_PORT_FEAT_RESET: {
2046 struct r8a66597_device *dev = rh->dev;
2047
2048 rh->port |= (1 << USB_PORT_FEAT_RESET);
2049
2050 disable_r8a66597_pipe_all(r8a66597, dev);
2051 free_usb_address(r8a66597, dev);
2052
2053 r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
2054 get_dvstctr_reg(port));
2055 mod_timer(&r8a66597->rh_timer,
2056 jiffies + msecs_to_jiffies(50));
2057 }
2058 break;
2059 default:
2060 goto error;
2061 }
2062 rh->port |= 1 << wValue;
2063 break;
2064 default:
2065 error:
2066 ret = -EPIPE;
2067 break;
2068 }
2069
2070 spin_unlock_irqrestore(&r8a66597->lock, flags);
2071 return ret;
2072 }
2073
2074 static struct hc_driver r8a66597_hc_driver = {
2075 .description = hcd_name,
2076 .hcd_priv_size = sizeof(struct r8a66597),
2077 .irq = r8a66597_irq,
2078
2079 /*
2080 * generic hardware linkage
2081 */
2082 .flags = HCD_USB2,
2083
2084 .start = r8a66597_start,
2085 .stop = r8a66597_stop,
2086
2087 /*
2088 * managing i/o requests and associated device resources
2089 */
2090 .urb_enqueue = r8a66597_urb_enqueue,
2091 .urb_dequeue = r8a66597_urb_dequeue,
2092 .endpoint_disable = r8a66597_endpoint_disable,
2093
2094 /*
2095 * periodic schedule support
2096 */
2097 .get_frame_number = r8a66597_get_frame,
2098
2099 /*
2100 * root hub support
2101 */
2102 .hub_status_data = r8a66597_hub_status_data,
2103 .hub_control = r8a66597_hub_control,
2104 };
2105
2106 #if defined(CONFIG_PM)
2107 static int r8a66597_suspend(struct platform_device *pdev, pm_message_t state)
2108 {
2109 pdev->dev.power.power_state = state;
2110 return 0;
2111 }
2112
2113 static int r8a66597_resume(struct platform_device *pdev)
2114 {
2115 pdev->dev.power.power_state = PMSG_ON;
2116 return 0;
2117 }
2118 #else /* if defined(CONFIG_PM) */
2119 #define r8a66597_suspend NULL
2120 #define r8a66597_resume NULL
2121 #endif
2122
2123 static int __init_or_module r8a66597_remove(struct platform_device *pdev)
2124 {
2125 struct r8a66597 *r8a66597 = dev_get_drvdata(&pdev->dev);
2126 struct usb_hcd *hcd = r8a66597_to_hcd(r8a66597);
2127
2128 del_timer_sync(&r8a66597->rh_timer);
2129 iounmap((void *)r8a66597->reg);
2130 usb_remove_hcd(hcd);
2131 usb_put_hcd(hcd);
2132 return 0;
2133 }
2134
2135 #define resource_len(r) (((r)->end - (r)->start) + 1)
2136 static int __init r8a66597_probe(struct platform_device *pdev)
2137 {
2138 struct resource *res = NULL;
2139 int irq = -1;
2140 void __iomem *reg = NULL;
2141 struct usb_hcd *hcd = NULL;
2142 struct r8a66597 *r8a66597;
2143 int ret = 0;
2144 int i;
2145
2146 if (pdev->dev.dma_mask) {
2147 ret = -EINVAL;
2148 err("dma not support");
2149 goto clean_up;
2150 }
2151
2152 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2153 (char *)hcd_name);
2154 if (!res) {
2155 ret = -ENODEV;
2156 err("platform_get_resource_byname error.");
2157 goto clean_up;
2158 }
2159
2160 irq = platform_get_irq(pdev, 0);
2161 if (irq < 0) {
2162 ret = -ENODEV;
2163 err("platform_get_irq error.");
2164 goto clean_up;
2165 }
2166
2167 reg = ioremap(res->start, resource_len(res));
2168 if (reg == NULL) {
2169 ret = -ENOMEM;
2170 err("ioremap error.");
2171 goto clean_up;
2172 }
2173
2174 /* initialize hcd */
2175 hcd = usb_create_hcd(&r8a66597_hc_driver, &pdev->dev, (char *)hcd_name);
2176 if (!hcd) {
2177 ret = -ENOMEM;
2178 err("Failed to create hcd");
2179 goto clean_up;
2180 }
2181 r8a66597 = hcd_to_r8a66597(hcd);
2182 memset(r8a66597, 0, sizeof(struct r8a66597));
2183 dev_set_drvdata(&pdev->dev, r8a66597);
2184
2185 spin_lock_init(&r8a66597->lock);
2186 init_timer(&r8a66597->rh_timer);
2187 r8a66597->rh_timer.function = r8a66597_timer;
2188 r8a66597->rh_timer.data = (unsigned long)r8a66597;
2189 r8a66597->reg = (unsigned long)reg;
2190
2191 for (i = 0; i < R8A66597_MAX_NUM_PIPE; i++) {
2192 INIT_LIST_HEAD(&r8a66597->pipe_queue[i]);
2193 init_timer(&r8a66597->td_timer[i]);
2194 r8a66597->td_timer[i].function = r8a66597_td_timer;
2195 r8a66597->td_timer[i].data = (unsigned long)r8a66597;
2196 }
2197 INIT_LIST_HEAD(&r8a66597->child_device);
2198
2199 hcd->rsrc_start = res->start;
2200 ret = usb_add_hcd(hcd, irq, 0);
2201 if (ret != 0) {
2202 err("Failed to add hcd");
2203 goto clean_up;
2204 }
2205
2206 return 0;
2207
2208 clean_up:
2209 if (reg)
2210 iounmap(reg);
2211 if (res)
2212 release_mem_region(res->start, 1);
2213
2214 return ret;
2215 }
2216
2217 static struct platform_driver r8a66597_driver = {
2218 .probe = r8a66597_probe,
2219 .remove = r8a66597_remove,
2220 .suspend = r8a66597_suspend,
2221 .resume = r8a66597_resume,
2222 .driver = {
2223 .name = (char *) hcd_name,
2224 },
2225 };
2226
2227 static int __init r8a66597_init(void)
2228 {
2229 if (usb_disabled())
2230 return -ENODEV;
2231
2232 info("driver %s, %s", hcd_name, DRIVER_VERSION);
2233 return platform_driver_register(&r8a66597_driver);
2234 }
2235 module_init(r8a66597_init);
2236
2237 static void __exit r8a66597_cleanup(void)
2238 {
2239 platform_driver_unregister(&r8a66597_driver);
2240 }
2241 module_exit(r8a66597_cleanup);
2242
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree