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[people/ms/u-boot.git] / arch / sparc / cpu / leon3 / usb_uhci.c
1 /*
2 * Part of this code has been derived from linux:
3 * Universal Host Controller Interface driver for USB (take II).
4 *
5 * (c) 1999-2001 Georg Acher, acher@in.tum.de (executive slave) (base guitar)
6 * Deti Fliegl, deti@fliegl.de (executive slave) (lead voice)
7 * Thomas Sailer, sailer@ife.ee.ethz.ch (chief consultant) (cheer leader)
8 * Roman Weissgaerber, weissg@vienna.at (virt root hub) (studio porter)
9 * (c) 2000 Yggdrasil Computing, Inc. (port of new PCI interface support
10 * from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
11 * (C) 2000 David Brownell, david-b@pacbell.net (usb-ohci.c)
12 *
13 * HW-initalization based on material of
14 *
15 * (C) Copyright 1999 Linus Torvalds
16 * (C) Copyright 1999 Johannes Erdfelt
17 * (C) Copyright 1999 Randy Dunlap
18 * (C) Copyright 1999 Gregory P. Smith
19 *
20 *
21 * Adapted for U-Boot:
22 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
23 * (C) Copyright 2008, Daniel Hellström, daniel@gaisler.com
24 * Added AMBA Plug&Play detection of GRUSB, modified interrupt handler.
25 * Added cache flushes where needed.
26 *
27 * SPDX-License-Identifier: GPL-2.0+
28 */
29
30 /**********************************************************************
31 * How it works:
32 * -------------
33 * The framelist / Transfer descriptor / Queue Heads are similar like
34 * in the linux usb_uhci.c.
35 *
36 * During initialization, the following skeleton is allocated in init_skel:
37 *
38 * framespecific | common chain
39 *
40 * framelist[]
41 * [ 0 ]-----> TD ---------\
42 * [ 1 ]-----> TD ----------> TD ------> QH -------> QH -------> QH ---> NULL
43 * ... TD ---------/
44 * [1023]-----> TD --------/
45 *
46 * ^^ ^^ ^^ ^^ ^^
47 * 7 TDs for 1 TD for Start of Start of End Chain
48 * INT (2-128ms) 1ms-INT CTRL Chain BULK Chain
49 *
50 *
51 * Since this is a bootloader, the isochronous transfer descriptor have been removed.
52 *
53 * Interrupt Transfers.
54 * --------------------
55 * For Interrupt transfers USB_MAX_TEMP_INT_TD Transfer descriptor are available. They
56 * will be inserted after the appropriate (depending the interval setting) skeleton TD.
57 * If an interrupt has been detected the dev->irqhandler is called. The status and number
58 * of transfered bytes is stored in dev->irq_status resp. dev->irq_act_len. If the
59 * dev->irqhandler returns 0, the interrupt TD is removed and disabled. If an 1 is returned,
60 * the interrupt TD will be reactivated.
61 *
62 * Control Transfers
63 * -----------------
64 * Control Transfers are issued by filling the tmp_td with the appropriate data and connect
65 * them to the qh_cntrl queue header. Before other control/bulk transfers can be issued,
66 * the programm has to wait for completion. This does not allows asynchronous data transfer.
67 *
68 * Bulk Transfers
69 * --------------
70 * Bulk Transfers are issued by filling the tmp_td with the appropriate data and connect
71 * them to the qh_bulk queue header. Before other control/bulk transfers can be issued,
72 * the programm has to wait for completion. This does not allows asynchronous data transfer.
73 *
74 *
75 */
76
77 #include <common.h>
78 #include <ambapp.h>
79 #include <asm/leon.h>
80 #include <asm/leon3.h>
81 #include <asm/processor.h>
82
83 #ifdef CONFIG_USB_UHCI
84
85 #include <usb.h>
86 #include "usb_uhci.h"
87
88 #define USB_MAX_TEMP_TD 128 /* number of temporary TDs for bulk and control transfers */
89 #define USB_MAX_TEMP_INT_TD 32 /* number of temporary TDs for Interrupt transfers */
90
91 extern int leon3_snooping_avail;
92 /*
93 #define out16r(address,data) (*(unsigned short *)(address) = \
94 (unsigned short)( \
95 (((unsigned short)(data)&0xff)<<8) | \
96 (((unsigned short)(data)&0xff00)>>8) \
97 ))
98 */
99 #define out16r(address,data) _out16r((unsigned int)(address), (unsigned short)(data))
100 void _out16r(unsigned int address, unsigned short data)
101 {
102 unsigned short val = (unsigned short)((((unsigned short)(data) & 0xff)
103 << 8) | (((unsigned short)(data)
104 & 0xff00) >> 8));
105 #ifdef UHCI_DEBUG_REGS
106 printf("out16r(0x%lx,0x%04x = 0x%04x)\n", address, val, data);
107 #endif
108 *(unsigned short *)(address) = val;
109 }
110
111 #define out32r(address,data) _out32r((unsigned int)(address), (unsigned int)(data))
112 void _out32r(unsigned int address, unsigned int data)
113 {
114 unsigned int val = (unsigned int)((((unsigned int)(data) & 0x000000ff)
115 << 24) | (((unsigned int)(data) &
116 0x0000ff00) << 8) |
117 (((unsigned int)(data) & 0x00ff0000)
118 >> 8) | (((unsigned int)(data) &
119 0xff000000) >> 24));
120 #ifdef UHCI_DEBUG_REGS
121 printf("out32r(0x%lx,0x%lx = 0x%lx)\n", address, val, data);
122 #endif
123 *(unsigned int *)address = val;
124 }
125
126 #define in16r(address) _in16r((unsigned int)(address))
127 unsigned short _in16r(unsigned int address)
128 {
129 unsigned short val = sparc_load_reg_cachemiss_word(address);
130 val = ((val << 8) & 0xff00) | ((val >> 8) & 0xff);
131 #ifdef UHCI_DEBUG_REGS
132 printf("in16r(0x%lx): 0x%04x\n", address, val);
133 #endif
134 return val;
135 }
136
137 #define in32r(address) _in32r((unsigned int)(address))
138 unsigned int _in32r(unsigned int address)
139 {
140 unsigned int val = sparc_load_reg_cachemiss(address);
141 val =
142 ((val << 24) & 0xff000000) | ((val << 8) & 0xff0000) | ((val >> 8) &
143 0xff00) |
144 ((val >> 24) & 0xff);
145 #ifdef UHCI_DEBUG_REGS
146 printf("in32r(0x%lx): 0x%08x\n", address, val);
147 #endif
148 return val;
149 }
150
151 #define READ32(address) sparc_load_reg_cachemiss((unsigned int)(address))
152
153 /*#define USB_UHCI_DEBUG*/
154 #undef USB_UHCI_DEBUG
155
156 void usb_show_td(int max);
157 #ifdef USB_UHCI_DEBUG
158 void grusb_show_regs(void);
159 #define USB_UHCI_PRINTF(fmt,args...) printf (fmt ,##args)
160 #else
161 #define USB_UHCI_PRINTF(fmt,args...)
162 #endif
163
164 static int grusb_irq = -1; /* irq vector, if -1 uhci is stopped / reseted */
165 unsigned int usb_base_addr; /* base address */
166
167 static uhci_td_t td_int[8] __attribute__ ((aligned(16))); /* Interrupt Transfer descriptors */
168 static uhci_qh_t qh_cntrl __attribute__ ((aligned(16))); /* control Queue Head */
169 static uhci_qh_t qh_bulk __attribute__ ((aligned(16))); /* bulk Queue Head */
170 static uhci_qh_t qh_end __attribute__ ((aligned(16))); /* end Queue Head */
171 static uhci_td_t td_last __attribute__ ((aligned(16))); /* last TD (linked with end chain) */
172
173 /* temporary tds */
174 static uhci_td_t tmp_td[USB_MAX_TEMP_TD] __attribute__ ((aligned(16))); /* temporary bulk/control td's */
175 static uhci_td_t tmp_int_td[USB_MAX_TEMP_INT_TD] __attribute__ ((aligned(16))); /* temporary interrupt td's */
176
177 static unsigned long framelist[1024] __attribute__ ((aligned(0x1000))); /* frame list */
178
179 static struct virt_root_hub rh; /* struct for root hub */
180
181 /**********************************************************************
182 * some forward decleration
183 */
184 int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
185 void *buffer, int transfer_len,
186 struct devrequest *setup);
187
188 /* fill a td with the approproiate data. Link, status, info and buffer
189 * are used by the USB controller itselfes, dev is used to identify the
190 * "connected" device
191 */
192 void usb_fill_td(uhci_td_t * td, unsigned long link, unsigned long status,
193 unsigned long info, unsigned long buffer, unsigned long dev)
194 {
195 td->link = swap_32(link);
196 td->status = swap_32(status);
197 if ((info & UHCI_PID) == 0)
198 info |= USB_PID_OUT;
199 td->info = swap_32(info);
200 td->buffer = swap_32(buffer);
201 td->dev_ptr = dev;
202 }
203
204 /* fill a qh with the approproiate data. Head and element are used by the USB controller
205 * itselfes. As soon as a valid dev_ptr is filled, a td chain is connected to the qh.
206 * Please note, that after completion of the td chain, the entry element is removed /
207 * marked invalid by the USB controller.
208 */
209 void usb_fill_qh(uhci_qh_t * qh, unsigned long head, unsigned long element)
210 {
211 qh->head = swap_32(head);
212 qh->element = swap_32(element);
213 qh->dev_ptr = 0L;
214 }
215
216 /* get the status of a td->status
217 */
218 unsigned long usb_uhci_td_stat(unsigned long status)
219 {
220 unsigned long result = 0;
221 result |= (status & TD_CTRL_NAK) ? USB_ST_NAK_REC : 0;
222 result |= (status & TD_CTRL_STALLED) ? USB_ST_STALLED : 0;
223 result |= (status & TD_CTRL_DBUFERR) ? USB_ST_BUF_ERR : 0;
224 result |= (status & TD_CTRL_BABBLE) ? USB_ST_BABBLE_DET : 0;
225 result |= (status & TD_CTRL_CRCTIMEO) ? USB_ST_CRC_ERR : 0;
226 result |= (status & TD_CTRL_BITSTUFF) ? USB_ST_BIT_ERR : 0;
227 result |= (status & TD_CTRL_ACTIVE) ? USB_ST_NOT_PROC : 0;
228 return result;
229 }
230
231 /* get the status and the transfered len of a td chain.
232 * called from the completion handler
233 */
234 int usb_get_td_status(uhci_td_t * td, struct usb_device *dev)
235 {
236 unsigned long temp, info;
237 unsigned long stat;
238 uhci_td_t *mytd = td;
239
240 if (dev->devnum == rh.devnum)
241 return 0;
242 dev->act_len = 0;
243 stat = 0;
244 do {
245 temp = swap_32((unsigned long)READ32(&mytd->status));
246 stat = usb_uhci_td_stat(temp);
247 info = swap_32((unsigned long)READ32(&mytd->info));
248 if (((info & 0xff) != USB_PID_SETUP) && (((info >> 21) & 0x7ff) != 0x7ff) && (temp & 0x7FF) != 0x7ff) { /* if not setup and not null data pack */
249 dev->act_len += (temp & 0x7FF) + 1; /* the transfered len is act_len + 1 */
250 }
251 if (stat) { /* status no ok */
252 dev->status = stat;
253 return -1;
254 }
255 temp = swap_32((unsigned long)READ32(&mytd->link));
256 mytd = (uhci_td_t *) (temp & 0xfffffff0);
257 } while ((temp & 0x1) == 0); /* process all TDs */
258 dev->status = stat;
259 return 0; /* Ok */
260 }
261
262 /*-------------------------------------------------------------------
263 * LOW LEVEL STUFF
264 * assembles QHs und TDs for control, bulk and iso
265 *-------------------------------------------------------------------*/
266 int dummy(void)
267 {
268 USB_UHCI_PRINTF("DUMMY\n");
269 return 0;
270 }
271
272 /* Submits a control message. That is a Setup, Data and Status transfer.
273 * Routine does not wait for completion.
274 */
275 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
276 int transfer_len, struct devrequest *setup)
277 {
278 unsigned long destination, status;
279 int maxsze = usb_maxpacket(dev, pipe);
280 unsigned long dataptr;
281 int len;
282 int pktsze;
283 int i = 0;
284
285 if (!maxsze) {
286 USB_UHCI_PRINTF
287 ("uhci_submit_control_urb: pipesize for pipe %lx is zero\n",
288 pipe);
289 return -1;
290 }
291 if (((pipe >> 8) & 0x7f) == rh.devnum) {
292 /* this is the root hub -> redirect it */
293 return uhci_submit_rh_msg(dev, pipe, buffer, transfer_len,
294 setup);
295 }
296 USB_UHCI_PRINTF("uhci_submit_control start len %x, maxsize %x\n",
297 transfer_len, maxsze);
298 /* The "pipe" thing contains the destination in bits 8--18 */
299 destination = (pipe & PIPE_DEVEP_MASK) | USB_PID_SETUP; /* Setup stage */
300 /* 3 errors */
301 status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
302 /* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD); */
303 /* Build the TD for the control request, try forever, 8 bytes of data */
304 usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, destination | (7 << 21),
305 (unsigned long)setup, (unsigned long)dev);
306 #ifdef DEBUG_EXTRA
307 {
308 char *sp = (char *)setup;
309 printf("SETUP to pipe %lx: %x %x %x %x %x %x %x %x\n", pipe,
310 sp[0], sp[1], sp[2], sp[3], sp[4], sp[5], sp[6], sp[7]);
311 }
312 #endif
313 dataptr = (unsigned long)buffer;
314 len = transfer_len;
315
316 /* If direction is "send", change the frame from SETUP (0x2D)
317 to OUT (0xE1). Else change it from SETUP to IN (0x69). */
318 destination =
319 (pipe & PIPE_DEVEP_MASK) | ((pipe & USB_DIR_IN) ==
320 0 ? USB_PID_OUT : USB_PID_IN);
321 while (len > 0) {
322 /* data stage */
323 pktsze = len;
324 i++;
325 if (pktsze > maxsze)
326 pktsze = maxsze;
327 destination ^= 1 << TD_TOKEN_TOGGLE; /* toggle DATA0/1 */
328 usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, destination | ((pktsze - 1) << 21), dataptr, (unsigned long)dev); /* Status, pktsze bytes of data */
329 tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]);
330
331 dataptr += pktsze;
332 len -= pktsze;
333 }
334
335 /* Build the final TD for control status */
336 /* It's only IN if the pipe is out AND we aren't expecting data */
337
338 destination &= ~UHCI_PID;
339 if (((pipe & USB_DIR_IN) == 0) || (transfer_len == 0))
340 destination |= USB_PID_IN;
341 else
342 destination |= USB_PID_OUT;
343 destination |= 1 << TD_TOKEN_TOGGLE; /* End in Data1 */
344 i++;
345 status &= ~TD_CTRL_SPD;
346 /* no limit on errors on final packet , 0 bytes of data */
347 usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status | TD_CTRL_IOC,
348 destination | (UHCI_NULL_DATA_SIZE << 21), 0,
349 (unsigned long)dev);
350 tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]); /* queue status td */
351 /* usb_show_td(i+1); */
352 USB_UHCI_PRINTF("uhci_submit_control end (%d tmp_tds used)\n", i);
353 /* first mark the control QH element terminated */
354 qh_cntrl.element = 0xffffffffL;
355 /* set qh active */
356 qh_cntrl.dev_ptr = (unsigned long)dev;
357 /* fill in tmp_td_chain */
358 dummy();
359 qh_cntrl.element = swap_32((unsigned long)&tmp_td[0]);
360 return 0;
361 }
362
363 /*-------------------------------------------------------------------
364 * Prepare TDs for bulk transfers.
365 */
366 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
367 int transfer_len)
368 {
369 unsigned long destination, status, info;
370 unsigned long dataptr;
371 int maxsze = usb_maxpacket(dev, pipe);
372 int len;
373 int i = 0;
374
375 if (transfer_len < 0) {
376 printf("Negative transfer length in submit_bulk\n");
377 return -1;
378 }
379 if (!maxsze)
380 return -1;
381 /* The "pipe" thing contains the destination in bits 8--18. */
382 destination = (pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe);
383 /* 3 errors */
384 status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
385 /* ((urb->transfer_flags & USB_DISABLE_SPD) ? 0 : TD_CTRL_SPD) | (3 << 27); */
386 /* Build the TDs for the bulk request */
387 len = transfer_len;
388 dataptr = (unsigned long)buffer;
389 do {
390 int pktsze = len;
391 if (pktsze > maxsze)
392 pktsze = maxsze;
393 /* pktsze bytes of data */
394 info =
395 destination | (((pktsze - 1) & UHCI_NULL_DATA_SIZE) << 21) |
396 (usb_gettoggle
397 (dev, usb_pipeendpoint(pipe),
398 usb_pipeout(pipe)) << TD_TOKEN_TOGGLE);
399
400 if ((len - pktsze) == 0)
401 status |= TD_CTRL_IOC; /* last one generates INT */
402
403 usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, info, dataptr, (unsigned long)dev); /* Status, pktsze bytes of data */
404 if (i > 0)
405 tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]);
406 i++;
407 dataptr += pktsze;
408 len -= pktsze;
409 usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
410 } while (len > 0);
411 /* first mark the bulk QH element terminated */
412 qh_bulk.element = 0xffffffffL;
413 /* set qh active */
414 qh_bulk.dev_ptr = (unsigned long)dev;
415 /* fill in tmp_td_chain */
416 qh_bulk.element = swap_32((unsigned long)&tmp_td[0]);
417 return 0;
418 }
419
420 /* search a free interrupt td
421 */
422 uhci_td_t *uhci_alloc_int_td(void)
423 {
424 int i;
425 for (i = 0; i < USB_MAX_TEMP_INT_TD; i++) {
426 if (tmp_int_td[i].dev_ptr == 0) /* no device assigned -> free TD */
427 return &tmp_int_td[i];
428 }
429 return NULL;
430 }
431
432 /*-------------------------------------------------------------------
433 * submits USB interrupt (ie. polling ;-)
434 */
435 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
436 int transfer_len, int interval)
437 {
438 int nint, n;
439 unsigned long status, destination;
440 unsigned long info, tmp;
441 uhci_td_t *mytd;
442 if (interval < 0 || interval >= 256)
443 return -1;
444
445 if (interval == 0)
446 nint = 0;
447 else {
448 for (nint = 0, n = 1; nint <= 8; nint++, n += n) { /* round interval down to 2^n */
449 if (interval < n) {
450 interval = n / 2;
451 break;
452 }
453 }
454 nint--;
455 }
456
457 USB_UHCI_PRINTF("Rounded interval to %i, chain %i\n", interval, nint);
458 mytd = uhci_alloc_int_td();
459 if (mytd == NULL) {
460 printf("No free INT TDs found\n");
461 return -1;
462 }
463 status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | TD_CTRL_IOC | (3 << 27);
464 /* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD) | (3 << 27);
465 */
466
467 destination =
468 (pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe) |
469 (((transfer_len - 1) & 0x7ff) << 21);
470
471 info =
472 destination |
473 (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)) <<
474 TD_TOKEN_TOGGLE);
475 tmp = swap_32(td_int[nint].link);
476 usb_fill_td(mytd, tmp, status, info, (unsigned long)buffer,
477 (unsigned long)dev);
478 /* Link it */
479 tmp = swap_32((unsigned long)mytd);
480 td_int[nint].link = tmp;
481
482 usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
483
484 return 0;
485 }
486
487 /**********************************************************************
488 * Low Level functions
489 */
490
491 void reset_hc(void)
492 {
493
494 /* Global reset for 100ms */
495 out16r(usb_base_addr + USBPORTSC1, 0x0204);
496 out16r(usb_base_addr + USBPORTSC2, 0x0204);
497 out16r(usb_base_addr + USBCMD, USBCMD_GRESET | USBCMD_RS);
498 /* Turn off all interrupts */
499 out16r(usb_base_addr + USBINTR, 0);
500 mdelay(50);
501 out16r(usb_base_addr + USBCMD, 0);
502 mdelay(10);
503 }
504
505 void start_hc(void)
506 {
507 int timeout = 1000;
508
509 while (in16r(usb_base_addr + USBCMD) & USBCMD_HCRESET) {
510 if (!--timeout) {
511 printf("USBCMD_HCRESET timed out!\n");
512 break;
513 }
514 }
515 /* Turn on all interrupts */
516 out16r(usb_base_addr + USBINTR,
517 USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC | USBINTR_SP);
518 /* Start at frame 0 */
519 out16r(usb_base_addr + USBFRNUM, 0);
520 /* set Framebuffer base address */
521 out32r(usb_base_addr + USBFLBASEADD, (unsigned long)&framelist);
522 /* Run and mark it configured with a 64-byte max packet */
523 out16r(usb_base_addr + USBCMD, USBCMD_RS | USBCMD_CF | USBCMD_MAXP);
524 }
525
526 /* Initialize the skeleton
527 */
528 void usb_init_skel(void)
529 {
530 unsigned long temp;
531 int n;
532
533 for (n = 0; n < USB_MAX_TEMP_INT_TD; n++)
534 tmp_int_td[n].dev_ptr = 0L; /* no devices connected */
535 /* last td */
536 usb_fill_td(&td_last, UHCI_PTR_TERM, TD_CTRL_IOC, USB_PID_OUT, 0, 0L);
537 /* usb_fill_td(&td_last,UHCI_PTR_TERM,0,0,0); */
538 /* End Queue Header */
539 usb_fill_qh(&qh_end, UHCI_PTR_TERM, (unsigned long)&td_last);
540 /* Bulk Queue Header */
541 temp = (unsigned long)&qh_end;
542 usb_fill_qh(&qh_bulk, temp | UHCI_PTR_QH, UHCI_PTR_TERM);
543 /* Control Queue Header */
544 temp = (unsigned long)&qh_bulk;
545 usb_fill_qh(&qh_cntrl, temp | UHCI_PTR_QH, UHCI_PTR_TERM);
546 /* 1ms Interrupt td */
547 temp = (unsigned long)&qh_cntrl;
548 usb_fill_td(&td_int[0], temp | UHCI_PTR_QH, 0, USB_PID_OUT, 0, 0L);
549 temp = (unsigned long)&td_int[0];
550 for (n = 1; n < 8; n++)
551 usb_fill_td(&td_int[n], temp, 0, USB_PID_OUT, 0, 0L);
552 for (n = 0; n < 1024; n++) {
553 /* link all framelist pointers to one of the interrupts */
554 int m, o;
555 if ((n & 127) == 127)
556 framelist[n] = swap_32((unsigned long)&td_int[0]);
557 else
558 for (o = 1, m = 2; m <= 128; o++, m += m)
559 if ((n & (m - 1)) == ((m - 1) / 2))
560 framelist[n] =
561 swap_32((unsigned long)&td_int[o]);
562
563 }
564 }
565
566 /* check the common skeleton for completed transfers, and update the status
567 * of the "connected" device. Called from the IRQ routine.
568 */
569 void usb_check_skel(void)
570 {
571 struct usb_device *dev;
572 /* start with the control qh */
573 if (qh_cntrl.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
574 dev = (struct usb_device *)qh_cntrl.dev_ptr;
575 /* Flush cache now that hardware updated DATA and TDs/QHs */
576 if (!leon3_snooping_avail)
577 sparc_dcache_flush_all();
578 usb_get_td_status(&tmp_td[0], dev); /* update status */
579 if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
580 qh_cntrl.dev_ptr = 0;
581 }
582 }
583 /* now process the bulk */
584 if (qh_bulk.dev_ptr != 0) { /* it's a device assigned check if this caused IRQ */
585 dev = (struct usb_device *)qh_bulk.dev_ptr;
586 /* Flush cache now that hardware updated DATA and TDs/QHs */
587 if (!leon3_snooping_avail)
588 sparc_dcache_flush_all();
589 usb_get_td_status(&tmp_td[0], dev); /* update status */
590 if (!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
591 qh_bulk.dev_ptr = 0;
592 }
593 }
594 }
595
596 /* check the interrupt chain, ubdate the status of the appropriate device,
597 * call the appropriate irqhandler and reactivate the TD if the irqhandler
598 * returns with 1
599 */
600 void usb_check_int_chain(void)
601 {
602 int i, res;
603 unsigned long link, status;
604 struct usb_device *dev;
605 uhci_td_t *td, *prevtd;
606
607 for (i = 0; i < 8; i++) {
608 prevtd = &td_int[i]; /* the first previous td is the skeleton td */
609 link = swap_32(READ32(&td_int[i].link)) & 0xfffffff0; /* next in chain */
610 td = (uhci_td_t *) link; /* assign it */
611 /* all interrupt TDs are finally linked to the td_int[0].
612 * so we process all until we find the td_int[0].
613 * if int0 chain points to a QH, we're also done
614 */
615 while (((i > 0) && (link != (unsigned long)&td_int[0])) ||
616 ((i == 0)
617 && !(swap_32(READ32(&td->link)) & UHCI_PTR_QH))) {
618 /* check if a device is assigned with this td */
619 status = swap_32(READ32(&td->status));
620 if ((td->dev_ptr != 0L) && !(status & TD_CTRL_ACTIVE)) {
621 /* td is not active and a device is assigned -> call irqhandler */
622 dev = (struct usb_device *)td->dev_ptr;
623 dev->irq_act_len = ((status & 0x7FF) == 0x7FF) ? 0 : (status & 0x7FF) + 1; /* transfered length */
624 dev->irq_status = usb_uhci_td_stat(status); /* get status */
625 res = dev->irq_handle(dev); /* call irqhandler */
626 if (res == 1) {
627 /* reactivate */
628 status |= TD_CTRL_ACTIVE;
629 td->status = swap_32(status);
630 prevtd = td; /* previous td = this td */
631 } else {
632 prevtd->link = READ32(&td->link); /* link previous td directly to the nex td -> unlinked */
633 /* remove device pointer */
634 td->dev_ptr = 0L;
635 }
636 } /* if we call the irq handler */
637 link = swap_32(READ32(&td->link)) & 0xfffffff0; /* next in chain */
638 td = (uhci_td_t *) link; /* assign it */
639 } /* process all td in this int chain */
640 } /* next interrupt chain */
641 }
642
643 /* usb interrupt service routine.
644 */
645 void handle_usb_interrupt(void)
646 {
647 unsigned short status;
648 static int error = 0;
649
650 /*
651 * Read the interrupt status, and write it back to clear the
652 * interrupt cause
653 */
654
655 status = in16r(usb_base_addr + USBSTS);
656
657 if (!status) /* shared interrupt, not mine */
658 return;
659 if (status != 1) {
660 /* remove host controller halted state */
661 if ((status & (USBSTS_HCPE | USBSTS_HCH)) ==
662 (USBSTS_HCPE | USBSTS_HCH)) {
663 /* Stop due to bug in driver, or hardware */
664 out16r(usb_base_addr + USBSTS, status);
665 out16r(usb_base_addr + USBCMD,
666 USBCMD_HCRESET | USBCMD_GRESET);
667 printf
668 ("GRUSB: HW detected error(s) in USB Descriptors (STS: 0x%x)\n",
669 status);
670 usb_show_td(8);
671 return;
672 } else if ((status & 0x20)
673 && ((in16r(usb_base_addr + USBCMD) & USBCMD_RS) ==
674 0)) {
675 if (error < 10) {
676 out16r(usb_base_addr + USBCMD,
677 USBCMD_RS | in16r(usb_base_addr +
678 USBCMD));
679 error++;
680 }
681 } else
682 error = 0;
683 }
684 usb_check_int_chain(); /* call interrupt handlers for int tds */
685 usb_check_skel(); /* call completion handler for common transfer routines */
686 out16r(usb_base_addr + USBSTS, status);
687 }
688
689 /* init uhci
690 */
691 int usb_lowlevel_init(int index, void **controller)
692 {
693 unsigned char temp;
694 ambapp_ahbdev ahbdev;
695
696 /* Find GRUSB core using AMBA Plug&Play information */
697 if (ambapp_ahbslv_first(VENDOR_GAISLER, GAISLER_UHCI, &ahbdev) != 1) {
698 printf("USB UHCI: Failed to find GRUSB controller\n");
699 return -1;
700 }
701 usb_base_addr = ahbdev.address[0];
702 grusb_irq = ahbdev.irq;
703 /*
704 usb_base_addr = 0xfffa0000;
705 grusb_irq = 10;
706 */
707 #ifdef USB_UHCI_DEBUG
708 grusb_show_regs();
709 #endif
710 memset(td_int, 0, sizeof(td_int));
711 memset(tmp_td, 0, sizeof(tmp_td));
712 memset(tmp_int_td, 0, sizeof(tmp_int_td));
713 memset(&qh_cntrl, 0, sizeof(qh_cntrl));
714 memset(&qh_end, 0, sizeof(qh_end));
715 memset(&td_last, 0, sizeof(td_last));
716
717 irq_free_handler(grusb_irq);
718 USB_UHCI_PRINTF("GRUSB: at 0x%lx irq %d\n", usb_base_addr, grusb_irq);
719 rh.devnum = 0;
720 usb_init_skel();
721 reset_hc();
722 start_hc();
723 irq_install_handler(grusb_irq,
724 (interrupt_handler_t *) handle_usb_interrupt, NULL);
725 return 0;
726 }
727
728 /* stop uhci
729 */
730 int usb_lowlevel_stop(int index)
731 {
732 if (grusb_irq == -1)
733 return 1;
734 irq_free_handler(grusb_irq);
735 reset_hc();
736 grusb_irq = -1;
737 return 0;
738 }
739
740 /*******************************************************************************************
741 * Virtual Root Hub
742 * Since the uhci does not have a real HUB, we simulate one ;-)
743 */
744 #undef USB_RH_DEBUG
745
746 #ifdef USB_RH_DEBUG
747 #define USB_RH_PRINTF(fmt,args...) printf (fmt ,##args)
748 static void usb_display_wValue(unsigned short wValue, unsigned short wIndex);
749 static void usb_display_Req(unsigned short req);
750 #else
751 #define USB_RH_PRINTF(fmt,args...)
752 static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
753 {
754 }
755 static void usb_display_Req(unsigned short req)
756 {
757 }
758 #endif
759
760 static unsigned char root_hub_dev_des[] = {
761 0x12, /* __u8 bLength; */
762 0x01, /* __u8 bDescriptorType; Device */
763 0x00, /* __u16 bcdUSB; v1.0 */
764 0x01,
765 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
766 0x00, /* __u8 bDeviceSubClass; */
767 0x00, /* __u8 bDeviceProtocol; */
768 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
769 0x00, /* __u16 idVendor; */
770 0x00,
771 0x00, /* __u16 idProduct; */
772 0x00,
773 0x00, /* __u16 bcdDevice; */
774 0x00,
775 0x01, /* __u8 iManufacturer; */
776 0x00, /* __u8 iProduct; */
777 0x00, /* __u8 iSerialNumber; */
778 0x01 /* __u8 bNumConfigurations; */
779 };
780
781 /* Configuration descriptor */
782 static unsigned char root_hub_config_des[] = {
783 0x09, /* __u8 bLength; */
784 0x02, /* __u8 bDescriptorType; Configuration */
785 0x19, /* __u16 wTotalLength; */
786 0x00,
787 0x01, /* __u8 bNumInterfaces; */
788 0x01, /* __u8 bConfigurationValue; */
789 0x00, /* __u8 iConfiguration; */
790 0x40, /* __u8 bmAttributes;
791 Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
792 0x00, /* __u8 MaxPower; */
793
794 /* interface */
795 0x09, /* __u8 if_bLength; */
796 0x04, /* __u8 if_bDescriptorType; Interface */
797 0x00, /* __u8 if_bInterfaceNumber; */
798 0x00, /* __u8 if_bAlternateSetting; */
799 0x01, /* __u8 if_bNumEndpoints; */
800 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
801 0x00, /* __u8 if_bInterfaceSubClass; */
802 0x00, /* __u8 if_bInterfaceProtocol; */
803 0x00, /* __u8 if_iInterface; */
804
805 /* endpoint */
806 0x07, /* __u8 ep_bLength; */
807 0x05, /* __u8 ep_bDescriptorType; Endpoint */
808 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
809 0x03, /* __u8 ep_bmAttributes; Interrupt */
810 0x08, /* __u16 ep_wMaxPacketSize; 8 Bytes */
811 0x00,
812 0xff /* __u8 ep_bInterval; 255 ms */
813 };
814
815 static unsigned char root_hub_hub_des[] = {
816 0x09, /* __u8 bLength; */
817 0x29, /* __u8 bDescriptorType; Hub-descriptor */
818 0x02, /* __u8 bNbrPorts; */
819 0x00, /* __u16 wHubCharacteristics; */
820 0x00,
821 0x01, /* __u8 bPwrOn2pwrGood; 2ms */
822 0x00, /* __u8 bHubContrCurrent; 0 mA */
823 0x00, /* __u8 DeviceRemovable; *** 7 Ports max *** */
824 0xff /* __u8 PortPwrCtrlMask; *** 7 ports max *** */
825 };
826
827 static unsigned char root_hub_str_index0[] = {
828 0x04, /* __u8 bLength; */
829 0x03, /* __u8 bDescriptorType; String-descriptor */
830 0x09, /* __u8 lang ID */
831 0x04, /* __u8 lang ID */
832 };
833
834 static unsigned char root_hub_str_index1[] = {
835 28, /* __u8 bLength; */
836 0x03, /* __u8 bDescriptorType; String-descriptor */
837 'U', /* __u8 Unicode */
838 0, /* __u8 Unicode */
839 'H', /* __u8 Unicode */
840 0, /* __u8 Unicode */
841 'C', /* __u8 Unicode */
842 0, /* __u8 Unicode */
843 'I', /* __u8 Unicode */
844 0, /* __u8 Unicode */
845 ' ', /* __u8 Unicode */
846 0, /* __u8 Unicode */
847 'R', /* __u8 Unicode */
848 0, /* __u8 Unicode */
849 'o', /* __u8 Unicode */
850 0, /* __u8 Unicode */
851 'o', /* __u8 Unicode */
852 0, /* __u8 Unicode */
853 't', /* __u8 Unicode */
854 0, /* __u8 Unicode */
855 ' ', /* __u8 Unicode */
856 0, /* __u8 Unicode */
857 'H', /* __u8 Unicode */
858 0, /* __u8 Unicode */
859 'u', /* __u8 Unicode */
860 0, /* __u8 Unicode */
861 'b', /* __u8 Unicode */
862 0, /* __u8 Unicode */
863 };
864
865 /*
866 * Root Hub Control Pipe (interrupt Pipes are not supported)
867 */
868
869 int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
870 int transfer_len, struct devrequest *cmd)
871 {
872 void *data = buffer;
873 int leni = transfer_len;
874 int len = 0;
875 int status = 0;
876 int stat = 0;
877 int i;
878
879 unsigned short cstatus;
880
881 unsigned short bmRType_bReq;
882 unsigned short wValue;
883 unsigned short wIndex;
884 unsigned short wLength;
885
886 if (usb_pipeint(pipe)) {
887 printf("Root-Hub submit IRQ: NOT implemented\n");
888 return 0;
889 }
890 bmRType_bReq = cmd->requesttype | cmd->request << 8;
891 wValue = swap_16(cmd->value);
892 wIndex = swap_16(cmd->index);
893 wLength = swap_16(cmd->length);
894 usb_display_Req(bmRType_bReq);
895 for (i = 0; i < 8; i++)
896 rh.c_p_r[i] = 0;
897 USB_RH_PRINTF("Root-Hub: adr: %2x cmd(%1x): %02x%02x %04x %04x %04x\n",
898 dev->devnum, 8, cmd->requesttype, cmd->request, wValue,
899 wIndex, wLength);
900
901 switch (bmRType_bReq) {
902 /* Request Destination:
903 without flags: Device,
904 RH_INTERFACE: interface,
905 RH_ENDPOINT: endpoint,
906 RH_CLASS means HUB here,
907 RH_OTHER | RH_CLASS almost ever means HUB_PORT here
908 */
909
910 case RH_GET_STATUS:
911 *(unsigned short *)data = swap_16(1);
912 len = 2;
913 break;
914 case RH_GET_STATUS | RH_INTERFACE:
915 *(unsigned short *)data = swap_16(0);
916 len = 2;
917 break;
918 case RH_GET_STATUS | RH_ENDPOINT:
919 *(unsigned short *)data = swap_16(0);
920 len = 2;
921 break;
922 case RH_GET_STATUS | RH_CLASS:
923 *(unsigned long *)data = swap_32(0);
924 len = 4;
925 break; /* hub power ** */
926 case RH_GET_STATUS | RH_OTHER | RH_CLASS:
927
928 status = in16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1));
929 cstatus = ((status & USBPORTSC_CSC) >> (1 - 0)) |
930 ((status & USBPORTSC_PEC) >> (3 - 1)) |
931 (rh.c_p_r[wIndex - 1] << (0 + 4));
932 status = (status & USBPORTSC_CCS) | ((status & USBPORTSC_PE) >> (2 - 1)) | ((status & USBPORTSC_SUSP) >> (12 - 2)) | ((status & USBPORTSC_PR) >> (9 - 4)) | (1 << 8) | /* power on ** */
933 ((status & USBPORTSC_LSDA) << (-8 + 9));
934
935 *(unsigned short *)data = swap_16(status);
936 *(unsigned short *)(data + 2) = swap_16(cstatus);
937 len = 4;
938 break;
939 case RH_CLEAR_FEATURE | RH_ENDPOINT:
940 switch (wValue) {
941 case (RH_ENDPOINT_STALL):
942 len = 0;
943 break;
944 }
945 break;
946
947 case RH_CLEAR_FEATURE | RH_CLASS:
948 switch (wValue) {
949 case (RH_C_HUB_OVER_CURRENT):
950 len = 0; /* hub power over current ** */
951 break;
952 }
953 break;
954
955 case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
956 usb_display_wValue(wValue, wIndex);
957 switch (wValue) {
958 case (RH_PORT_ENABLE):
959 status =
960 in16r(usb_base_addr + USBPORTSC1 +
961 2 * (wIndex - 1));
962 status = (status & 0xfff5) & ~USBPORTSC_PE;
963 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
964 status);
965 len = 0;
966 break;
967 case (RH_PORT_SUSPEND):
968 status =
969 in16r(usb_base_addr + USBPORTSC1 +
970 2 * (wIndex - 1));
971 status = (status & 0xfff5) & ~USBPORTSC_SUSP;
972 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
973 status);
974 len = 0;
975 break;
976 case (RH_PORT_POWER):
977 len = 0; /* port power ** */
978 break;
979 case (RH_C_PORT_CONNECTION):
980 status =
981 in16r(usb_base_addr + USBPORTSC1 +
982 2 * (wIndex - 1));
983 status = (status & 0xfff5) | USBPORTSC_CSC;
984 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
985 status);
986 len = 0;
987 break;
988 case (RH_C_PORT_ENABLE):
989 status =
990 in16r(usb_base_addr + USBPORTSC1 +
991 2 * (wIndex - 1));
992 status = (status & 0xfff5) | USBPORTSC_PEC;
993 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
994 status);
995 len = 0;
996 break;
997 case (RH_C_PORT_SUSPEND):
998 /*** WR_RH_PORTSTAT(RH_PS_PSSC); */
999 len = 0;
1000 break;
1001 case (RH_C_PORT_OVER_CURRENT):
1002 len = 0;
1003 break;
1004 case (RH_C_PORT_RESET):
1005 rh.c_p_r[wIndex - 1] = 0;
1006 len = 0;
1007 break;
1008 }
1009 break;
1010 case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1011 usb_display_wValue(wValue, wIndex);
1012 switch (wValue) {
1013 case (RH_PORT_SUSPEND):
1014 status =
1015 in16r(usb_base_addr + USBPORTSC1 +
1016 2 * (wIndex - 1));
1017 status = (status & 0xfff5) | USBPORTSC_SUSP;
1018 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
1019 status);
1020 len = 0;
1021 break;
1022 case (RH_PORT_RESET):
1023 status =
1024 in16r(usb_base_addr + USBPORTSC1 +
1025 2 * (wIndex - 1));
1026 status = (status & 0xfff5) | USBPORTSC_PR;
1027 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
1028 status);
1029 mdelay(10);
1030 status = (status & 0xfff5) & ~USBPORTSC_PR;
1031 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
1032 status);
1033 udelay(10);
1034 status = (status & 0xfff5) | USBPORTSC_PE;
1035 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
1036 status);
1037 mdelay(10);
1038 status = (status & 0xfff5) | 0xa;
1039 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
1040 status);
1041 len = 0;
1042 break;
1043 case (RH_PORT_POWER):
1044 len = 0; /* port power ** */
1045 break;
1046 case (RH_PORT_ENABLE):
1047 status =
1048 in16r(usb_base_addr + USBPORTSC1 +
1049 2 * (wIndex - 1));
1050 status = (status & 0xfff5) | USBPORTSC_PE;
1051 out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
1052 status);
1053 len = 0;
1054 break;
1055 }
1056 break;
1057
1058 case RH_SET_ADDRESS:
1059 rh.devnum = wValue;
1060 len = 0;
1061 break;
1062 case RH_GET_DESCRIPTOR:
1063 switch ((wValue & 0xff00) >> 8) {
1064 case (0x01): /* device descriptor */
1065 i = sizeof(root_hub_config_des);
1066 status = i > wLength ? wLength : i;
1067 len = leni > status ? status : leni;
1068 memcpy(data, root_hub_dev_des, len);
1069 break;
1070 case (0x02): /* configuration descriptor */
1071 i = sizeof(root_hub_config_des);
1072 status = i > wLength ? wLength : i;
1073 len = leni > status ? status : leni;
1074 memcpy(data, root_hub_config_des, len);
1075 break;
1076 case (0x03): /*string descriptors */
1077 if (wValue == 0x0300) {
1078 i = sizeof(root_hub_str_index0);
1079 status = i > wLength ? wLength : i;
1080 len = leni > status ? status : leni;
1081 memcpy(data, root_hub_str_index0, len);
1082 break;
1083 }
1084 if (wValue == 0x0301) {
1085 i = sizeof(root_hub_str_index1);
1086 status = i > wLength ? wLength : i;
1087 len = leni > status ? status : leni;
1088 memcpy(data, root_hub_str_index1, len);
1089 break;
1090 }
1091 stat = USB_ST_STALLED;
1092 }
1093 break;
1094
1095 case RH_GET_DESCRIPTOR | RH_CLASS:
1096 root_hub_hub_des[2] = 2;
1097 i = sizeof(root_hub_hub_des);
1098 status = i > wLength ? wLength : i;
1099 len = leni > status ? status : leni;
1100 memcpy(data, root_hub_hub_des, len);
1101 break;
1102 case RH_GET_CONFIGURATION:
1103 *(unsigned char *)data = 0x01;
1104 len = 1;
1105 break;
1106 case RH_SET_CONFIGURATION:
1107 len = 0;
1108 break;
1109 default:
1110 stat = USB_ST_STALLED;
1111 }
1112 USB_RH_PRINTF("Root-Hub stat %lx port1: %x port2: %x\n\n", stat,
1113 in16r(usb_base_addr + USBPORTSC1),
1114 in16r(usb_base_addr + USBPORTSC2));
1115 dev->act_len = len;
1116 dev->status = stat;
1117 return stat;
1118
1119 }
1120
1121 /********************************************************************************
1122 * Some Debug Routines
1123 */
1124
1125 #ifdef USB_RH_DEBUG
1126
1127 static void usb_display_Req(unsigned short req)
1128 {
1129 USB_RH_PRINTF("- Root-Hub Request: ");
1130 switch (req) {
1131 case RH_GET_STATUS:
1132 USB_RH_PRINTF("Get Status ");
1133 break;
1134 case RH_GET_STATUS | RH_INTERFACE:
1135 USB_RH_PRINTF("Get Status Interface ");
1136 break;
1137 case RH_GET_STATUS | RH_ENDPOINT:
1138 USB_RH_PRINTF("Get Status Endpoint ");
1139 break;
1140 case RH_GET_STATUS | RH_CLASS:
1141 USB_RH_PRINTF("Get Status Class");
1142 break; /* hub power ** */
1143 case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1144 USB_RH_PRINTF("Get Status Class Others");
1145 break;
1146 case RH_CLEAR_FEATURE | RH_ENDPOINT:
1147 USB_RH_PRINTF("Clear Feature Endpoint ");
1148 break;
1149 case RH_CLEAR_FEATURE | RH_CLASS:
1150 USB_RH_PRINTF("Clear Feature Class ");
1151 break;
1152 case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
1153 USB_RH_PRINTF("Clear Feature Other Class ");
1154 break;
1155 case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1156 USB_RH_PRINTF("Set Feature Other Class ");
1157 break;
1158 case RH_SET_ADDRESS:
1159 USB_RH_PRINTF("Set Address ");
1160 break;
1161 case RH_GET_DESCRIPTOR:
1162 USB_RH_PRINTF("Get Descriptor ");
1163 break;
1164 case RH_GET_DESCRIPTOR | RH_CLASS:
1165 USB_RH_PRINTF("Get Descriptor Class ");
1166 break;
1167 case RH_GET_CONFIGURATION:
1168 USB_RH_PRINTF("Get Configuration ");
1169 break;
1170 case RH_SET_CONFIGURATION:
1171 USB_RH_PRINTF("Get Configuration ");
1172 break;
1173 default:
1174 USB_RH_PRINTF("****UNKNOWN**** 0x%04X ", req);
1175 }
1176 USB_RH_PRINTF("\n");
1177
1178 }
1179
1180 static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
1181 {
1182 switch (wValue) {
1183 case (RH_PORT_ENABLE):
1184 USB_RH_PRINTF("Root-Hub: Enable Port %d\n", wIndex);
1185 break;
1186 case (RH_PORT_SUSPEND):
1187 USB_RH_PRINTF("Root-Hub: Suspend Port %d\n", wIndex);
1188 break;
1189 case (RH_PORT_POWER):
1190 USB_RH_PRINTF("Root-Hub: Port Power %d\n", wIndex);
1191 break;
1192 case (RH_C_PORT_CONNECTION):
1193 USB_RH_PRINTF("Root-Hub: C Port Connection Port %d\n", wIndex);
1194 break;
1195 case (RH_C_PORT_ENABLE):
1196 USB_RH_PRINTF("Root-Hub: C Port Enable Port %d\n", wIndex);
1197 break;
1198 case (RH_C_PORT_SUSPEND):
1199 USB_RH_PRINTF("Root-Hub: C Port Suspend Port %d\n", wIndex);
1200 break;
1201 case (RH_C_PORT_OVER_CURRENT):
1202 USB_RH_PRINTF("Root-Hub: C Port Over Current Port %d\n",
1203 wIndex);
1204 break;
1205 case (RH_C_PORT_RESET):
1206 USB_RH_PRINTF("Root-Hub: C Port reset Port %d\n", wIndex);
1207 break;
1208 default:
1209 USB_RH_PRINTF("Root-Hub: unknown %x %x\n", wValue, wIndex);
1210 break;
1211 }
1212 }
1213
1214 #endif
1215
1216 /*#ifdef USB_UHCI_DEBUG*/
1217
1218 static int usb_display_td(uhci_td_t * td)
1219 {
1220 unsigned long tmp;
1221 int valid;
1222
1223 printf("TD at %p:\n", td);
1224
1225 tmp = swap_32(READ32(&td->link));
1226 printf("Link points to 0x%08lX, %s first, %s, %s\n", tmp & 0xfffffff0,
1227 ((tmp & 0x4) == 0x4) ? "Depth" : "Breath",
1228 ((tmp & 0x2) == 0x2) ? "QH" : "TD",
1229 ((tmp & 0x1) == 0x1) ? "invalid" : "valid");
1230 valid = ((tmp & 0x1) == 0x0);
1231 tmp = swap_32(READ32(&td->status));
1232 printf
1233 (" %s %ld Errors %s %s %s \n %s %s %s %s %s %s\n Len 0x%lX\n",
1234 (((tmp >> 29) & 0x1) == 0x1) ? "SPD Enable" : "SPD Disable",
1235 ((tmp >> 28) & 0x3),
1236 (((tmp >> 26) & 0x1) == 0x1) ? "Low Speed" : "Full Speed",
1237 (((tmp >> 25) & 0x1) == 0x1) ? "ISO " : "",
1238 (((tmp >> 24) & 0x1) == 0x1) ? "IOC " : "",
1239 (((tmp >> 23) & 0x1) == 0x1) ? "Active " : "Inactive ",
1240 (((tmp >> 22) & 0x1) == 0x1) ? "Stalled" : "",
1241 (((tmp >> 21) & 0x1) == 0x1) ? "Data Buffer Error" : "",
1242 (((tmp >> 20) & 0x1) == 0x1) ? "Babble" : "",
1243 (((tmp >> 19) & 0x1) == 0x1) ? "NAK" : "",
1244 (((tmp >> 18) & 0x1) == 0x1) ? "Bitstuff Error" : "",
1245 (tmp & 0x7ff));
1246 tmp = swap_32(READ32(&td->info));
1247 printf(" MaxLen 0x%lX\n", ((tmp >> 21) & 0x7FF));
1248 printf(" %sEndpoint 0x%lX Dev Addr 0x%lX PID 0x%lX\n",
1249 ((tmp >> 19) & 0x1) == 0x1 ? "TOGGLE " : "", ((tmp >> 15) & 0xF),
1250 ((tmp >> 8) & 0x7F), tmp & 0xFF);
1251 tmp = swap_32(READ32(&td->buffer));
1252 printf(" Buffer 0x%08lX\n", tmp);
1253 printf(" DEV %08lX\n", td->dev_ptr);
1254 return valid;
1255 }
1256
1257 void usb_show_td(int max)
1258 {
1259 int i;
1260 if (max > 0) {
1261 for (i = 0; i < max; i++) {
1262 usb_display_td(&tmp_td[i]);
1263 }
1264 } else {
1265 i = 0;
1266 do {
1267 printf("tmp_td[%d]\n", i);
1268 } while (usb_display_td(&tmp_td[i++]));
1269 }
1270 }
1271
1272 void grusb_show_regs(void)
1273 {
1274 unsigned int tmp;
1275
1276 tmp = in16r(usb_base_addr + USBCMD);
1277 printf(" USBCMD: 0x%04x\n", tmp);
1278 tmp = in16r(usb_base_addr + USBSTS);
1279 printf(" USBSTS: 0x%04x\n", tmp);
1280 tmp = in16r(usb_base_addr + USBINTR);
1281 printf(" USBINTR: 0x%04x\n", tmp);
1282 tmp = in16r(usb_base_addr + USBFRNUM);
1283 printf(" FRNUM: 0x%04x\n", tmp);
1284 tmp = in32r(usb_base_addr + USBFLBASEADD);
1285 printf(" FLBASEADD: 0x%08x\n", tmp);
1286 tmp = in16r(usb_base_addr + USBSOF);
1287 printf(" SOFMOD: 0x%04x\n", tmp);
1288 tmp = in16r(usb_base_addr + USBPORTSC1);
1289 printf(" PORTSC1: 0x%04x\n", tmp);
1290 }
1291
1292 /*#endif*/
1293 #endif /* CONFIG_USB_UHCI */
1294
1295 /* EOF */
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