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265817c7 WD |
1 | /* |
2 | * URB OHCI HCD (Host Controller Driver) for USB on the AU1x00. | |
3 | * | |
4 | * (C) Copyright 2003 | |
792a09eb | 5 | * Gary Jennejohn, DENX Software Engineering <garyj@denx.de> |
265817c7 WD |
6 | * |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
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., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | * | |
25 | * Note: Part of this code has been derived from linux | |
26 | * | |
27 | */ | |
28 | /* | |
29 | * IMPORTANT NOTES | |
c7d703f3 | 30 | * 1 - this driver is intended for use with USB Mass Storage Devices |
265817c7 WD |
31 | * (BBB) ONLY. There is NO support for Interrupt or Isochronous pipes! |
32 | */ | |
33 | ||
34 | #include <config.h> | |
35 | ||
79b51ff8 | 36 | #ifdef CONFIG_USB_OHCI |
265817c7 WD |
37 | |
38 | /* #include <pci.h> no PCI on the AU1x00 */ | |
39 | ||
40 | #include <common.h> | |
41 | #include <malloc.h> | |
42 | #include <asm/io.h> | |
43 | #include <asm/au1x00.h> | |
44 | #include <usb.h> | |
45 | #include "au1x00_usb_ohci.h" | |
46 | ||
47 | #define OHCI_USE_NPS /* force NoPowerSwitching mode */ | |
48 | #define OHCI_VERBOSE_DEBUG /* not always helpful */ | |
49 | #define OHCI_FILL_TRACE | |
50 | ||
51 | #define USBH_ENABLE_BE (1<<0) | |
52 | #define USBH_ENABLE_C (1<<1) | |
53 | #define USBH_ENABLE_E (1<<2) | |
54 | #define USBH_ENABLE_CE (1<<3) | |
55 | #define USBH_ENABLE_RD (1<<4) | |
56 | ||
c7d703f3 | 57 | #ifdef __LITTLE_ENDIAN |
265817c7 WD |
58 | #define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C) |
59 | #else | |
60 | #define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | USBH_ENABLE_BE) | |
61 | #endif | |
62 | ||
63 | ||
64 | /* For initializing controller (mask in an HCFS mode too) */ | |
65 | #define OHCI_CONTROL_INIT \ | |
66 | (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE | |
67 | ||
68 | #undef readl | |
69 | #undef writel | |
70 | ||
71 | #define readl(a) au_readl((long)(a)) | |
72 | #define writel(v,a) au_writel((v),(int)(a)) | |
73 | ||
74 | #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; }) | |
75 | ||
76 | #define DEBUG | |
77 | #ifdef DEBUG | |
78 | #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg) | |
79 | #else | |
80 | #define dbg(format, arg...) do {} while(0) | |
81 | #endif /* DEBUG */ | |
82 | #define err(format, arg...) printf("ERROR: " format "\n", ## arg) | |
83 | #define SHOW_INFO | |
84 | #ifdef SHOW_INFO | |
85 | #define info(format, arg...) printf("INFO: " format "\n", ## arg) | |
86 | #else | |
87 | #define info(format, arg...) do {} while(0) | |
88 | #endif | |
89 | ||
90 | #define m16_swap(x) swap_16(x) | |
91 | #define m32_swap(x) swap_32(x) | |
92 | ||
93 | /* global ohci_t */ | |
94 | static ohci_t gohci; | |
95 | /* this must be aligned to a 256 byte boundary */ | |
96 | struct ohci_hcca ghcca[1]; | |
97 | /* a pointer to the aligned storage */ | |
98 | struct ohci_hcca *phcca; | |
99 | /* this allocates EDs for all possible endpoints */ | |
100 | struct ohci_device ohci_dev; | |
101 | /* urb_priv */ | |
102 | urb_priv_t urb_priv; | |
103 | /* RHSC flag */ | |
104 | int got_rhsc; | |
105 | /* device which was disconnected */ | |
106 | struct usb_device *devgone; | |
107 | ||
108 | /*-------------------------------------------------------------------------*/ | |
109 | ||
110 | /* AMD-756 (D2 rev) reports corrupt register contents in some cases. | |
111 | * The erratum (#4) description is incorrect. AMD's workaround waits | |
112 | * till some bits (mostly reserved) are clear; ok for all revs. | |
113 | */ | |
114 | #define OHCI_QUIRK_AMD756 0xabcd | |
115 | #define read_roothub(hc, register, mask) ({ \ | |
116 | u32 temp = readl (&hc->regs->roothub.register); \ | |
117 | if (hc->flags & OHCI_QUIRK_AMD756) \ | |
118 | while (temp & mask) \ | |
119 | temp = readl (&hc->regs->roothub.register); \ | |
120 | temp; }) | |
121 | ||
122 | static u32 roothub_a (struct ohci *hc) | |
123 | { return read_roothub (hc, a, 0xfc0fe000); } | |
124 | static inline u32 roothub_b (struct ohci *hc) | |
125 | { return readl (&hc->regs->roothub.b); } | |
126 | static inline u32 roothub_status (struct ohci *hc) | |
127 | { return readl (&hc->regs->roothub.status); } | |
128 | static u32 roothub_portstatus (struct ohci *hc, int i) | |
129 | { return read_roothub (hc, portstatus [i], 0xffe0fce0); } | |
130 | ||
131 | ||
132 | /* forward declaration */ | |
133 | static int hc_interrupt (void); | |
134 | static void | |
135 | td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer, | |
136 | int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval); | |
137 | ||
138 | /*-------------------------------------------------------------------------* | |
139 | * URB support functions | |
140 | *-------------------------------------------------------------------------*/ | |
141 | ||
142 | /* free HCD-private data associated with this URB */ | |
143 | ||
144 | static void urb_free_priv (urb_priv_t * urb) | |
145 | { | |
146 | int i; | |
147 | int last; | |
148 | struct td * td; | |
149 | ||
150 | last = urb->length - 1; | |
151 | if (last >= 0) { | |
152 | for (i = 0; i <= last; i++) { | |
153 | td = urb->td[i]; | |
154 | if (td) { | |
155 | td->usb_dev = NULL; | |
156 | urb->td[i] = NULL; | |
157 | } | |
158 | } | |
159 | } | |
160 | } | |
161 | ||
162 | /*-------------------------------------------------------------------------*/ | |
163 | ||
164 | #ifdef DEBUG | |
165 | static int sohci_get_current_frame_number (struct usb_device * dev); | |
166 | ||
167 | /* debug| print the main components of an URB | |
168 | * small: 0) header + data packets 1) just header */ | |
169 | ||
170 | static void pkt_print (struct usb_device * dev, unsigned long pipe, void * buffer, | |
171 | int transfer_len, struct devrequest * setup, char * str, int small) | |
172 | { | |
173 | urb_priv_t * purb = &urb_priv; | |
174 | ||
175 | dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx", | |
176 | str, | |
177 | sohci_get_current_frame_number (dev), | |
178 | usb_pipedevice (pipe), | |
179 | usb_pipeendpoint (pipe), | |
180 | usb_pipeout (pipe)? 'O': 'I', | |
181 | usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"): | |
182 | (usb_pipecontrol (pipe)? "CTRL": "BULK"), | |
183 | purb->actual_length, | |
184 | transfer_len, dev->status); | |
185 | #ifdef OHCI_VERBOSE_DEBUG | |
186 | if (!small) { | |
187 | int i, len; | |
188 | ||
189 | if (usb_pipecontrol (pipe)) { | |
190 | printf (__FILE__ ": cmd(8):"); | |
191 | for (i = 0; i < 8 ; i++) | |
192 | printf (" %02x", ((__u8 *) setup) [i]); | |
193 | printf ("\n"); | |
194 | } | |
195 | if (transfer_len > 0 && buffer) { | |
196 | printf (__FILE__ ": data(%d/%d):", | |
197 | purb->actual_length, | |
198 | transfer_len); | |
199 | len = usb_pipeout (pipe)? | |
200 | transfer_len: purb->actual_length; | |
201 | for (i = 0; i < 16 && i < len; i++) | |
202 | printf (" %02x", ((__u8 *) buffer) [i]); | |
203 | printf ("%s\n", i < len? "...": ""); | |
204 | } | |
205 | } | |
206 | #endif | |
207 | } | |
208 | ||
209 | /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/ | |
210 | void ep_print_int_eds (ohci_t *ohci, char * str) { | |
211 | int i, j; | |
212 | __u32 * ed_p; | |
213 | for (i= 0; i < 32; i++) { | |
214 | j = 5; | |
215 | ed_p = &(ohci->hcca->int_table [i]); | |
216 | if (*ed_p == 0) | |
217 | continue; | |
218 | printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i); | |
219 | while (*ed_p != 0 && j--) { | |
220 | ed_t *ed = (ed_t *)m32_swap(ed_p); | |
221 | printf (" ed: %4x;", ed->hwINFO); | |
222 | ed_p = &ed->hwNextED; | |
223 | } | |
224 | printf ("\n"); | |
225 | } | |
226 | } | |
227 | ||
228 | static void ohci_dump_intr_mask (char *label, __u32 mask) | |
229 | { | |
230 | dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s", | |
231 | label, | |
232 | mask, | |
233 | (mask & OHCI_INTR_MIE) ? " MIE" : "", | |
234 | (mask & OHCI_INTR_OC) ? " OC" : "", | |
235 | (mask & OHCI_INTR_RHSC) ? " RHSC" : "", | |
236 | (mask & OHCI_INTR_FNO) ? " FNO" : "", | |
237 | (mask & OHCI_INTR_UE) ? " UE" : "", | |
238 | (mask & OHCI_INTR_RD) ? " RD" : "", | |
239 | (mask & OHCI_INTR_SF) ? " SF" : "", | |
240 | (mask & OHCI_INTR_WDH) ? " WDH" : "", | |
241 | (mask & OHCI_INTR_SO) ? " SO" : "" | |
242 | ); | |
243 | } | |
244 | ||
245 | static void maybe_print_eds (char *label, __u32 value) | |
246 | { | |
247 | ed_t *edp = (ed_t *)value; | |
248 | ||
249 | if (value) { | |
250 | dbg ("%s %08x", label, value); | |
251 | dbg ("%08x", edp->hwINFO); | |
252 | dbg ("%08x", edp->hwTailP); | |
253 | dbg ("%08x", edp->hwHeadP); | |
254 | dbg ("%08x", edp->hwNextED); | |
255 | } | |
256 | } | |
257 | ||
258 | static char * hcfs2string (int state) | |
259 | { | |
260 | switch (state) { | |
261 | case OHCI_USB_RESET: return "reset"; | |
262 | case OHCI_USB_RESUME: return "resume"; | |
263 | case OHCI_USB_OPER: return "operational"; | |
264 | case OHCI_USB_SUSPEND: return "suspend"; | |
265 | } | |
266 | return "?"; | |
267 | } | |
268 | ||
269 | /* dump control and status registers */ | |
270 | static void ohci_dump_status (ohci_t *controller) | |
271 | { | |
272 | struct ohci_regs *regs = controller->regs; | |
273 | __u32 temp; | |
274 | ||
275 | temp = readl (®s->revision) & 0xff; | |
276 | if (temp != 0x10) | |
277 | dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f)); | |
278 | ||
279 | temp = readl (®s->control); | |
280 | dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp, | |
281 | (temp & OHCI_CTRL_RWE) ? " RWE" : "", | |
282 | (temp & OHCI_CTRL_RWC) ? " RWC" : "", | |
283 | (temp & OHCI_CTRL_IR) ? " IR" : "", | |
284 | hcfs2string (temp & OHCI_CTRL_HCFS), | |
285 | (temp & OHCI_CTRL_BLE) ? " BLE" : "", | |
286 | (temp & OHCI_CTRL_CLE) ? " CLE" : "", | |
287 | (temp & OHCI_CTRL_IE) ? " IE" : "", | |
288 | (temp & OHCI_CTRL_PLE) ? " PLE" : "", | |
289 | temp & OHCI_CTRL_CBSR | |
290 | ); | |
291 | ||
292 | temp = readl (®s->cmdstatus); | |
293 | dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp, | |
294 | (temp & OHCI_SOC) >> 16, | |
295 | (temp & OHCI_OCR) ? " OCR" : "", | |
296 | (temp & OHCI_BLF) ? " BLF" : "", | |
297 | (temp & OHCI_CLF) ? " CLF" : "", | |
298 | (temp & OHCI_HCR) ? " HCR" : "" | |
299 | ); | |
300 | ||
301 | ohci_dump_intr_mask ("intrstatus", readl (®s->intrstatus)); | |
302 | ohci_dump_intr_mask ("intrenable", readl (®s->intrenable)); | |
303 | ||
304 | maybe_print_eds ("ed_periodcurrent", readl (®s->ed_periodcurrent)); | |
305 | ||
306 | maybe_print_eds ("ed_controlhead", readl (®s->ed_controlhead)); | |
307 | maybe_print_eds ("ed_controlcurrent", readl (®s->ed_controlcurrent)); | |
308 | ||
309 | maybe_print_eds ("ed_bulkhead", readl (®s->ed_bulkhead)); | |
310 | maybe_print_eds ("ed_bulkcurrent", readl (®s->ed_bulkcurrent)); | |
311 | ||
312 | maybe_print_eds ("donehead", readl (®s->donehead)); | |
313 | } | |
314 | ||
315 | static void ohci_dump_roothub (ohci_t *controller, int verbose) | |
316 | { | |
317 | __u32 temp, ndp, i; | |
318 | ||
319 | temp = roothub_a (controller); | |
320 | ndp = (temp & RH_A_NDP); | |
321 | ||
322 | if (verbose) { | |
323 | dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp, | |
324 | ((temp & RH_A_POTPGT) >> 24) & 0xff, | |
325 | (temp & RH_A_NOCP) ? " NOCP" : "", | |
326 | (temp & RH_A_OCPM) ? " OCPM" : "", | |
327 | (temp & RH_A_DT) ? " DT" : "", | |
328 | (temp & RH_A_NPS) ? " NPS" : "", | |
329 | (temp & RH_A_PSM) ? " PSM" : "", | |
330 | ndp | |
331 | ); | |
332 | temp = roothub_b (controller); | |
333 | dbg ("roothub.b: %08x PPCM=%04x DR=%04x", | |
334 | temp, | |
335 | (temp & RH_B_PPCM) >> 16, | |
336 | (temp & RH_B_DR) | |
337 | ); | |
338 | temp = roothub_status (controller); | |
339 | dbg ("roothub.status: %08x%s%s%s%s%s%s", | |
340 | temp, | |
341 | (temp & RH_HS_CRWE) ? " CRWE" : "", | |
342 | (temp & RH_HS_OCIC) ? " OCIC" : "", | |
343 | (temp & RH_HS_LPSC) ? " LPSC" : "", | |
344 | (temp & RH_HS_DRWE) ? " DRWE" : "", | |
345 | (temp & RH_HS_OCI) ? " OCI" : "", | |
346 | (temp & RH_HS_LPS) ? " LPS" : "" | |
347 | ); | |
348 | } | |
349 | ||
350 | for (i = 0; i < ndp; i++) { | |
351 | temp = roothub_portstatus (controller, i); | |
352 | dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s", | |
353 | i, | |
354 | temp, | |
355 | (temp & RH_PS_PRSC) ? " PRSC" : "", | |
356 | (temp & RH_PS_OCIC) ? " OCIC" : "", | |
357 | (temp & RH_PS_PSSC) ? " PSSC" : "", | |
358 | (temp & RH_PS_PESC) ? " PESC" : "", | |
359 | (temp & RH_PS_CSC) ? " CSC" : "", | |
360 | ||
361 | (temp & RH_PS_LSDA) ? " LSDA" : "", | |
362 | (temp & RH_PS_PPS) ? " PPS" : "", | |
363 | (temp & RH_PS_PRS) ? " PRS" : "", | |
364 | (temp & RH_PS_POCI) ? " POCI" : "", | |
365 | (temp & RH_PS_PSS) ? " PSS" : "", | |
366 | ||
367 | (temp & RH_PS_PES) ? " PES" : "", | |
368 | (temp & RH_PS_CCS) ? " CCS" : "" | |
369 | ); | |
370 | } | |
371 | } | |
372 | ||
373 | static void ohci_dump (ohci_t *controller, int verbose) | |
374 | { | |
375 | dbg ("OHCI controller usb-%s state", controller->slot_name); | |
376 | ||
377 | /* dumps some of the state we know about */ | |
378 | ohci_dump_status (controller); | |
379 | if (verbose) | |
380 | ep_print_int_eds (controller, "hcca"); | |
381 | dbg ("hcca frame #%04x", controller->hcca->frame_no); | |
382 | ohci_dump_roothub (controller, 1); | |
383 | } | |
384 | ||
385 | ||
386 | #endif /* DEBUG */ | |
387 | ||
388 | /*-------------------------------------------------------------------------* | |
389 | * Interface functions (URB) | |
390 | *-------------------------------------------------------------------------*/ | |
391 | ||
392 | /* get a transfer request */ | |
393 | ||
394 | int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer, | |
395 | int transfer_len, struct devrequest *setup, int interval) | |
396 | { | |
397 | ohci_t *ohci; | |
398 | ed_t * ed; | |
399 | urb_priv_t *purb_priv; | |
400 | int i, size = 0; | |
401 | ||
402 | ohci = &gohci; | |
403 | ||
404 | /* when controller's hung, permit only roothub cleanup attempts | |
405 | * such as powering down ports */ | |
406 | if (ohci->disabled) { | |
407 | err("sohci_submit_job: EPIPE"); | |
408 | return -1; | |
409 | } | |
410 | ||
411 | /* every endpoint has a ed, locate and fill it */ | |
412 | if (!(ed = ep_add_ed (dev, pipe))) { | |
413 | err("sohci_submit_job: ENOMEM"); | |
414 | return -1; | |
415 | } | |
416 | ||
417 | /* for the private part of the URB we need the number of TDs (size) */ | |
418 | switch (usb_pipetype (pipe)) { | |
419 | case PIPE_BULK: /* one TD for every 4096 Byte */ | |
420 | size = (transfer_len - 1) / 4096 + 1; | |
421 | break; | |
422 | case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */ | |
423 | size = (transfer_len == 0)? 2: | |
424 | (transfer_len - 1) / 4096 + 3; | |
425 | break; | |
426 | } | |
427 | ||
428 | if (size >= (N_URB_TD - 1)) { | |
429 | err("need %d TDs, only have %d", size, N_URB_TD); | |
430 | return -1; | |
431 | } | |
432 | purb_priv = &urb_priv; | |
433 | purb_priv->pipe = pipe; | |
434 | ||
435 | /* fill the private part of the URB */ | |
436 | purb_priv->length = size; | |
437 | purb_priv->ed = ed; | |
438 | purb_priv->actual_length = 0; | |
439 | ||
440 | /* allocate the TDs */ | |
441 | /* note that td[0] was allocated in ep_add_ed */ | |
442 | for (i = 0; i < size; i++) { | |
443 | purb_priv->td[i] = td_alloc (dev); | |
444 | if (!purb_priv->td[i]) { | |
445 | purb_priv->length = i; | |
446 | urb_free_priv (purb_priv); | |
447 | err("sohci_submit_job: ENOMEM"); | |
448 | return -1; | |
449 | } | |
450 | } | |
451 | ||
452 | if (ed->state == ED_NEW || (ed->state & ED_DEL)) { | |
453 | urb_free_priv (purb_priv); | |
454 | err("sohci_submit_job: EINVAL"); | |
455 | return -1; | |
456 | } | |
457 | ||
458 | /* link the ed into a chain if is not already */ | |
459 | if (ed->state != ED_OPER) | |
460 | ep_link (ohci, ed); | |
461 | ||
462 | /* fill the TDs and link it to the ed */ | |
463 | td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval); | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | /*-------------------------------------------------------------------------*/ | |
469 | ||
470 | #ifdef DEBUG | |
471 | /* tell us the current USB frame number */ | |
472 | ||
473 | static int sohci_get_current_frame_number (struct usb_device *usb_dev) | |
474 | { | |
475 | ohci_t *ohci = &gohci; | |
476 | ||
477 | return m16_swap (ohci->hcca->frame_no); | |
478 | } | |
479 | #endif | |
480 | ||
481 | /*-------------------------------------------------------------------------* | |
482 | * ED handling functions | |
483 | *-------------------------------------------------------------------------*/ | |
484 | ||
485 | /* link an ed into one of the HC chains */ | |
486 | ||
487 | static int ep_link (ohci_t *ohci, ed_t *edi) | |
488 | { | |
489 | volatile ed_t *ed = edi; | |
490 | ||
491 | ed->state = ED_OPER; | |
492 | ||
493 | switch (ed->type) { | |
494 | case PIPE_CONTROL: | |
495 | ed->hwNextED = 0; | |
496 | if (ohci->ed_controltail == NULL) { | |
497 | writel ((long)ed, &ohci->regs->ed_controlhead); | |
498 | } else { | |
499 | ohci->ed_controltail->hwNextED = m32_swap (ed); | |
500 | } | |
501 | ed->ed_prev = ohci->ed_controltail; | |
502 | if (!ohci->ed_controltail && !ohci->ed_rm_list[0] && | |
503 | !ohci->ed_rm_list[1] && !ohci->sleeping) { | |
504 | ohci->hc_control |= OHCI_CTRL_CLE; | |
505 | writel (ohci->hc_control, &ohci->regs->control); | |
506 | } | |
507 | ohci->ed_controltail = edi; | |
508 | break; | |
509 | ||
510 | case PIPE_BULK: | |
511 | ed->hwNextED = 0; | |
512 | if (ohci->ed_bulktail == NULL) { | |
513 | writel ((long)ed, &ohci->regs->ed_bulkhead); | |
514 | } else { | |
515 | ohci->ed_bulktail->hwNextED = m32_swap (ed); | |
516 | } | |
517 | ed->ed_prev = ohci->ed_bulktail; | |
518 | if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] && | |
519 | !ohci->ed_rm_list[1] && !ohci->sleeping) { | |
520 | ohci->hc_control |= OHCI_CTRL_BLE; | |
521 | writel (ohci->hc_control, &ohci->regs->control); | |
522 | } | |
523 | ohci->ed_bulktail = edi; | |
524 | break; | |
525 | } | |
526 | return 0; | |
527 | } | |
528 | ||
529 | /*-------------------------------------------------------------------------*/ | |
530 | ||
531 | /* unlink an ed from one of the HC chains. | |
532 | * just the link to the ed is unlinked. | |
533 | * the link from the ed still points to another operational ed or 0 | |
534 | * so the HC can eventually finish the processing of the unlinked ed */ | |
535 | ||
536 | static int ep_unlink (ohci_t *ohci, ed_t *ed) | |
537 | { | |
538 | ed->hwINFO |= m32_swap (OHCI_ED_SKIP); | |
539 | ||
540 | switch (ed->type) { | |
541 | case PIPE_CONTROL: | |
542 | if (ed->ed_prev == NULL) { | |
543 | if (!ed->hwNextED) { | |
544 | ohci->hc_control &= ~OHCI_CTRL_CLE; | |
545 | writel (ohci->hc_control, &ohci->regs->control); | |
546 | } | |
547 | writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead); | |
548 | } else { | |
549 | ed->ed_prev->hwNextED = ed->hwNextED; | |
550 | } | |
551 | if (ohci->ed_controltail == ed) { | |
552 | ohci->ed_controltail = ed->ed_prev; | |
553 | } else { | |
554 | ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev; | |
555 | } | |
556 | break; | |
557 | ||
558 | case PIPE_BULK: | |
559 | if (ed->ed_prev == NULL) { | |
560 | if (!ed->hwNextED) { | |
561 | ohci->hc_control &= ~OHCI_CTRL_BLE; | |
562 | writel (ohci->hc_control, &ohci->regs->control); | |
563 | } | |
564 | writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead); | |
565 | } else { | |
566 | ed->ed_prev->hwNextED = ed->hwNextED; | |
567 | } | |
568 | if (ohci->ed_bulktail == ed) { | |
569 | ohci->ed_bulktail = ed->ed_prev; | |
570 | } else { | |
571 | ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev; | |
572 | } | |
573 | break; | |
574 | } | |
575 | ed->state = ED_UNLINK; | |
576 | return 0; | |
577 | } | |
578 | ||
579 | ||
580 | /*-------------------------------------------------------------------------*/ | |
581 | ||
582 | /* add/reinit an endpoint; this should be done once at the usb_set_configuration command, | |
583 | * but the USB stack is a little bit stateless so we do it at every transaction | |
584 | * if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK | |
585 | * in all other cases the state is left unchanged | |
586 | * the ed info fields are setted anyway even though most of them should not change */ | |
587 | ||
588 | static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe) | |
589 | { | |
590 | td_t *td; | |
591 | ed_t *ed_ret; | |
592 | volatile ed_t *ed; | |
593 | ||
594 | ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) | | |
595 | (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))]; | |
596 | ||
597 | if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) { | |
598 | err("ep_add_ed: pending delete"); | |
599 | /* pending delete request */ | |
600 | return NULL; | |
601 | } | |
602 | ||
603 | if (ed->state == ED_NEW) { | |
604 | ed->hwINFO = m32_swap (OHCI_ED_SKIP); /* skip ed */ | |
605 | /* dummy td; end of td list for ed */ | |
606 | td = td_alloc (usb_dev); | |
607 | ed->hwTailP = m32_swap (td); | |
608 | ed->hwHeadP = ed->hwTailP; | |
609 | ed->state = ED_UNLINK; | |
610 | ed->type = usb_pipetype (pipe); | |
611 | ohci_dev.ed_cnt++; | |
612 | } | |
613 | ||
614 | ed->hwINFO = m32_swap (usb_pipedevice (pipe) | |
615 | | usb_pipeendpoint (pipe) << 7 | |
616 | | (usb_pipeisoc (pipe)? 0x8000: 0) | |
617 | | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000)) | |
618 | | usb_pipeslow (pipe) << 13 | |
619 | | usb_maxpacket (usb_dev, pipe) << 16); | |
620 | ||
621 | return ed_ret; | |
622 | } | |
623 | ||
624 | /*-------------------------------------------------------------------------* | |
625 | * TD handling functions | |
626 | *-------------------------------------------------------------------------*/ | |
627 | ||
628 | /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */ | |
629 | ||
630 | static void td_fill (ohci_t *ohci, unsigned int info, | |
631 | void *data, int len, | |
632 | struct usb_device *dev, int index, urb_priv_t *urb_priv) | |
633 | { | |
634 | volatile td_t *td, *td_pt; | |
635 | #ifdef OHCI_FILL_TRACE | |
636 | int i; | |
637 | #endif | |
638 | ||
639 | if (index > urb_priv->length) { | |
640 | err("index > length"); | |
641 | return; | |
642 | } | |
643 | /* use this td as the next dummy */ | |
644 | td_pt = urb_priv->td [index]; | |
645 | td_pt->hwNextTD = 0; | |
646 | ||
647 | /* fill the old dummy TD */ | |
648 | td = urb_priv->td [index] = (td_t *)(m32_swap (urb_priv->ed->hwTailP) & ~0xf); | |
649 | ||
650 | td->ed = urb_priv->ed; | |
651 | td->next_dl_td = NULL; | |
652 | td->index = index; | |
653 | td->data = (__u32)data; | |
654 | #ifdef OHCI_FILL_TRACE | |
9dbc3667 RB |
655 | if (1 || (usb_pipebulk(urb_priv->pipe) && |
656 | usb_pipeout(urb_priv->pipe))) { | |
265817c7 WD |
657 | for (i = 0; i < len; i++) |
658 | printf("td->data[%d] %#2x\n",i, ((unsigned char *)(td->data+0x80000000))[i]); | |
659 | } | |
660 | #endif | |
661 | if (!len) | |
662 | data = 0; | |
663 | ||
664 | td->hwINFO = m32_swap (info); | |
665 | td->hwCBP = m32_swap (data); | |
666 | if (data) | |
667 | td->hwBE = m32_swap (data + len - 1); | |
668 | else | |
669 | td->hwBE = 0; | |
670 | td->hwNextTD = m32_swap (td_pt); | |
671 | td->hwPSW [0] = m16_swap (((__u32)data & 0x0FFF) | 0xE000); | |
672 | ||
673 | /* append to queue */ | |
674 | td->ed->hwTailP = td->hwNextTD; | |
675 | } | |
676 | ||
677 | /*-------------------------------------------------------------------------*/ | |
678 | ||
679 | /* prepare all TDs of a transfer */ | |
680 | ||
681 | #define kseg_to_phys(x) ((void *)((__u32)(x) - 0x80000000)) | |
682 | ||
683 | static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer, | |
684 | int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval) | |
685 | { | |
686 | ohci_t *ohci = &gohci; | |
687 | int data_len = transfer_len; | |
688 | void *data; | |
689 | int cnt = 0; | |
690 | __u32 info = 0; | |
691 | unsigned int toggle = 0; | |
692 | ||
693 | /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */ | |
694 | if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) { | |
695 | toggle = TD_T_TOGGLE; | |
696 | } else { | |
697 | toggle = TD_T_DATA0; | |
698 | usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1); | |
699 | } | |
700 | urb->td_cnt = 0; | |
701 | if (data_len) | |
702 | data = kseg_to_phys(buffer); | |
703 | else | |
704 | data = 0; | |
705 | ||
706 | switch (usb_pipetype (pipe)) { | |
707 | case PIPE_BULK: | |
708 | info = usb_pipeout (pipe)? | |
709 | TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ; | |
710 | while(data_len > 4096) { | |
711 | td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb); | |
712 | data += 4096; data_len -= 4096; cnt++; | |
713 | } | |
714 | info = usb_pipeout (pipe)? | |
715 | TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ; | |
716 | td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb); | |
717 | cnt++; | |
718 | ||
719 | if (!ohci->sleeping) | |
720 | writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */ | |
721 | break; | |
722 | ||
723 | case PIPE_CONTROL: | |
724 | info = TD_CC | TD_DP_SETUP | TD_T_DATA0; | |
725 | td_fill (ohci, info, kseg_to_phys(setup), 8, dev, cnt++, urb); | |
726 | if (data_len > 0) { | |
727 | info = usb_pipeout (pipe)? | |
728 | TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1; | |
729 | /* NOTE: mishandles transfers >8K, some >4K */ | |
730 | td_fill (ohci, info, data, data_len, dev, cnt++, urb); | |
731 | } | |
732 | info = usb_pipeout (pipe)? | |
733 | TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1; | |
734 | td_fill (ohci, info, data, 0, dev, cnt++, urb); | |
735 | if (!ohci->sleeping) | |
736 | writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */ | |
737 | break; | |
738 | } | |
739 | if (urb->length != cnt) | |
740 | dbg("TD LENGTH %d != CNT %d", urb->length, cnt); | |
741 | } | |
742 | ||
743 | /*-------------------------------------------------------------------------* | |
744 | * Done List handling functions | |
745 | *-------------------------------------------------------------------------*/ | |
746 | ||
747 | ||
748 | /* calculate the transfer length and update the urb */ | |
749 | ||
750 | static void dl_transfer_length(td_t * td) | |
751 | { | |
752 | __u32 tdINFO, tdBE, tdCBP; | |
753 | urb_priv_t *lurb_priv = &urb_priv; | |
754 | ||
755 | tdINFO = m32_swap (td->hwINFO); | |
756 | tdBE = m32_swap (td->hwBE); | |
757 | tdCBP = m32_swap (td->hwCBP); | |
758 | ||
759 | ||
9dbc3667 | 760 | if (!(usb_pipecontrol(lurb_priv->pipe) && |
265817c7 WD |
761 | ((td->index == 0) || (td->index == lurb_priv->length - 1)))) { |
762 | if (tdBE != 0) { | |
763 | if (td->hwCBP == 0) | |
764 | lurb_priv->actual_length += tdBE - td->data + 1; | |
765 | else | |
766 | lurb_priv->actual_length += tdCBP - td->data; | |
767 | } | |
768 | } | |
769 | } | |
770 | ||
771 | /*-------------------------------------------------------------------------*/ | |
772 | ||
773 | /* replies to the request have to be on a FIFO basis so | |
774 | * we reverse the reversed done-list */ | |
775 | ||
776 | static td_t * dl_reverse_done_list (ohci_t *ohci) | |
777 | { | |
778 | __u32 td_list_hc; | |
779 | td_t *td_rev = NULL; | |
780 | td_t *td_list = NULL; | |
781 | urb_priv_t *lurb_priv = NULL; | |
782 | ||
783 | td_list_hc = m32_swap (ohci->hcca->done_head) & 0xfffffff0; | |
784 | ohci->hcca->done_head = 0; | |
785 | ||
786 | while (td_list_hc) { | |
787 | td_list = (td_t *)td_list_hc; | |
788 | ||
789 | if (TD_CC_GET (m32_swap (td_list->hwINFO))) { | |
790 | lurb_priv = &urb_priv; | |
791 | dbg(" USB-error/status: %x : %p", | |
792 | TD_CC_GET (m32_swap (td_list->hwINFO)), td_list); | |
793 | if (td_list->ed->hwHeadP & m32_swap (0x1)) { | |
794 | if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) { | |
795 | td_list->ed->hwHeadP = | |
796 | (lurb_priv->td[lurb_priv->length - 1]->hwNextTD & m32_swap (0xfffffff0)) | | |
797 | (td_list->ed->hwHeadP & m32_swap (0x2)); | |
798 | lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1; | |
799 | } else | |
800 | td_list->ed->hwHeadP &= m32_swap (0xfffffff2); | |
801 | } | |
802 | } | |
803 | ||
804 | td_list->next_dl_td = td_rev; | |
805 | td_rev = td_list; | |
806 | td_list_hc = m32_swap (td_list->hwNextTD) & 0xfffffff0; | |
807 | } | |
808 | return td_list; | |
809 | } | |
810 | ||
811 | /*-------------------------------------------------------------------------*/ | |
812 | ||
813 | /* td done list */ | |
814 | static int dl_done_list (ohci_t *ohci, td_t *td_list) | |
815 | { | |
816 | td_t *td_list_next = NULL; | |
817 | ed_t *ed; | |
818 | int cc = 0; | |
819 | int stat = 0; | |
820 | /* urb_t *urb; */ | |
821 | urb_priv_t *lurb_priv; | |
822 | __u32 tdINFO, edHeadP, edTailP; | |
823 | ||
824 | while (td_list) { | |
825 | td_list_next = td_list->next_dl_td; | |
826 | ||
827 | lurb_priv = &urb_priv; | |
828 | tdINFO = m32_swap (td_list->hwINFO); | |
829 | ||
830 | ed = td_list->ed; | |
831 | ||
832 | dl_transfer_length(td_list); | |
833 | ||
834 | /* error code of transfer */ | |
835 | cc = TD_CC_GET (tdINFO); | |
836 | if (cc != 0) { | |
837 | dbg("ConditionCode %#x", cc); | |
838 | stat = cc_to_error[cc]; | |
839 | } | |
840 | ||
841 | if (ed->state != ED_NEW) { | |
842 | edHeadP = m32_swap (ed->hwHeadP) & 0xfffffff0; | |
843 | edTailP = m32_swap (ed->hwTailP); | |
844 | ||
845 | /* unlink eds if they are not busy */ | |
846 | if ((edHeadP == edTailP) && (ed->state == ED_OPER)) | |
847 | ep_unlink (ohci, ed); | |
848 | } | |
849 | ||
850 | td_list = td_list_next; | |
851 | } | |
852 | return stat; | |
853 | } | |
854 | ||
855 | /*-------------------------------------------------------------------------* | |
856 | * Virtual Root Hub | |
857 | *-------------------------------------------------------------------------*/ | |
858 | ||
859 | /* Device descriptor */ | |
860 | static __u8 root_hub_dev_des[] = | |
861 | { | |
862 | 0x12, /* __u8 bLength; */ | |
863 | 0x01, /* __u8 bDescriptorType; Device */ | |
864 | 0x10, /* __u16 bcdUSB; v1.1 */ | |
865 | 0x01, | |
866 | 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */ | |
867 | 0x00, /* __u8 bDeviceSubClass; */ | |
868 | 0x00, /* __u8 bDeviceProtocol; */ | |
869 | 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */ | |
870 | 0x00, /* __u16 idVendor; */ | |
871 | 0x00, | |
872 | 0x00, /* __u16 idProduct; */ | |
873 | 0x00, | |
874 | 0x00, /* __u16 bcdDevice; */ | |
875 | 0x00, | |
876 | 0x00, /* __u8 iManufacturer; */ | |
877 | 0x01, /* __u8 iProduct; */ | |
878 | 0x00, /* __u8 iSerialNumber; */ | |
879 | 0x01 /* __u8 bNumConfigurations; */ | |
880 | }; | |
881 | ||
882 | ||
883 | /* Configuration descriptor */ | |
884 | static __u8 root_hub_config_des[] = | |
885 | { | |
886 | 0x09, /* __u8 bLength; */ | |
887 | 0x02, /* __u8 bDescriptorType; Configuration */ | |
888 | 0x19, /* __u16 wTotalLength; */ | |
889 | 0x00, | |
890 | 0x01, /* __u8 bNumInterfaces; */ | |
891 | 0x01, /* __u8 bConfigurationValue; */ | |
892 | 0x00, /* __u8 iConfiguration; */ | |
893 | 0x40, /* __u8 bmAttributes; | |
894 | Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */ | |
895 | 0x00, /* __u8 MaxPower; */ | |
896 | ||
897 | /* interface */ | |
898 | 0x09, /* __u8 if_bLength; */ | |
899 | 0x04, /* __u8 if_bDescriptorType; Interface */ | |
900 | 0x00, /* __u8 if_bInterfaceNumber; */ | |
901 | 0x00, /* __u8 if_bAlternateSetting; */ | |
902 | 0x01, /* __u8 if_bNumEndpoints; */ | |
903 | 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */ | |
904 | 0x00, /* __u8 if_bInterfaceSubClass; */ | |
905 | 0x00, /* __u8 if_bInterfaceProtocol; */ | |
906 | 0x00, /* __u8 if_iInterface; */ | |
907 | ||
908 | /* endpoint */ | |
909 | 0x07, /* __u8 ep_bLength; */ | |
910 | 0x05, /* __u8 ep_bDescriptorType; Endpoint */ | |
911 | 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */ | |
912 | 0x03, /* __u8 ep_bmAttributes; Interrupt */ | |
913 | 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */ | |
914 | 0x00, | |
915 | 0xff /* __u8 ep_bInterval; 255 ms */ | |
916 | }; | |
917 | ||
918 | static unsigned char root_hub_str_index0[] = | |
919 | { | |
920 | 0x04, /* __u8 bLength; */ | |
921 | 0x03, /* __u8 bDescriptorType; String-descriptor */ | |
922 | 0x09, /* __u8 lang ID */ | |
923 | 0x04, /* __u8 lang ID */ | |
924 | }; | |
925 | ||
926 | static unsigned char root_hub_str_index1[] = | |
927 | { | |
928 | 28, /* __u8 bLength; */ | |
929 | 0x03, /* __u8 bDescriptorType; String-descriptor */ | |
930 | 'O', /* __u8 Unicode */ | |
931 | 0, /* __u8 Unicode */ | |
932 | 'H', /* __u8 Unicode */ | |
933 | 0, /* __u8 Unicode */ | |
934 | 'C', /* __u8 Unicode */ | |
935 | 0, /* __u8 Unicode */ | |
936 | 'I', /* __u8 Unicode */ | |
937 | 0, /* __u8 Unicode */ | |
938 | ' ', /* __u8 Unicode */ | |
939 | 0, /* __u8 Unicode */ | |
940 | 'R', /* __u8 Unicode */ | |
941 | 0, /* __u8 Unicode */ | |
942 | 'o', /* __u8 Unicode */ | |
943 | 0, /* __u8 Unicode */ | |
944 | 'o', /* __u8 Unicode */ | |
945 | 0, /* __u8 Unicode */ | |
946 | 't', /* __u8 Unicode */ | |
947 | 0, /* __u8 Unicode */ | |
948 | ' ', /* __u8 Unicode */ | |
949 | 0, /* __u8 Unicode */ | |
950 | 'H', /* __u8 Unicode */ | |
951 | 0, /* __u8 Unicode */ | |
952 | 'u', /* __u8 Unicode */ | |
953 | 0, /* __u8 Unicode */ | |
954 | 'b', /* __u8 Unicode */ | |
955 | 0, /* __u8 Unicode */ | |
956 | }; | |
957 | ||
958 | /* Hub class-specific descriptor is constructed dynamically */ | |
959 | ||
960 | ||
961 | /*-------------------------------------------------------------------------*/ | |
962 | ||
963 | #define OK(x) len = (x); break | |
964 | #ifdef DEBUG | |
965 | #define WR_RH_STAT(x) {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);} | |
966 | #define WR_RH_PORTSTAT(x) {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);} | |
967 | #else | |
968 | #define WR_RH_STAT(x) writel((x), &gohci.regs->roothub.status) | |
969 | #define WR_RH_PORTSTAT(x) writel((x), &gohci.regs->roothub.portstatus[wIndex-1]) | |
970 | #endif | |
971 | #define RD_RH_STAT roothub_status(&gohci) | |
972 | #define RD_RH_PORTSTAT roothub_portstatus(&gohci,wIndex-1) | |
973 | ||
974 | /* request to virtual root hub */ | |
975 | ||
976 | int rh_check_port_status(ohci_t *controller) | |
977 | { | |
978 | __u32 temp, ndp, i; | |
979 | int res; | |
980 | ||
981 | res = -1; | |
982 | temp = roothub_a (controller); | |
983 | ndp = (temp & RH_A_NDP); | |
984 | for (i = 0; i < ndp; i++) { | |
985 | temp = roothub_portstatus (controller, i); | |
986 | /* check for a device disconnect */ | |
987 | if (((temp & (RH_PS_PESC | RH_PS_CSC)) == | |
988 | (RH_PS_PESC | RH_PS_CSC)) && | |
989 | ((temp & RH_PS_CCS) == 0)) { | |
990 | res = i; | |
991 | break; | |
992 | } | |
993 | } | |
994 | return res; | |
995 | } | |
996 | ||
997 | static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, | |
998 | void *buffer, int transfer_len, struct devrequest *cmd) | |
999 | { | |
1000 | void * data = buffer; | |
1001 | int leni = transfer_len; | |
1002 | int len = 0; | |
1003 | int stat = 0; | |
1004 | __u32 datab[4]; | |
1005 | __u8 *data_buf = (__u8 *)datab; | |
1006 | __u16 bmRType_bReq; | |
1007 | __u16 wValue; | |
1008 | __u16 wIndex; | |
1009 | __u16 wLength; | |
1010 | ||
1011 | #ifdef DEBUG | |
1012 | urb_priv.actual_length = 0; | |
1013 | pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe)); | |
1014 | #else | |
1015 | wait_ms(1); | |
1016 | #endif | |
9dbc3667 | 1017 | if (usb_pipeint(pipe)) { |
265817c7 WD |
1018 | info("Root-Hub submit IRQ: NOT implemented"); |
1019 | return 0; | |
1020 | } | |
1021 | ||
1022 | bmRType_bReq = cmd->requesttype | (cmd->request << 8); | |
1023 | wValue = m16_swap (cmd->value); | |
1024 | wIndex = m16_swap (cmd->index); | |
1025 | wLength = m16_swap (cmd->length); | |
1026 | ||
1027 | info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x", | |
1028 | dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength); | |
1029 | ||
1030 | switch (bmRType_bReq) { | |
1031 | /* Request Destination: | |
1032 | without flags: Device, | |
1033 | RH_INTERFACE: interface, | |
1034 | RH_ENDPOINT: endpoint, | |
1035 | RH_CLASS means HUB here, | |
1036 | RH_OTHER | RH_CLASS almost ever means HUB_PORT here | |
1037 | */ | |
1038 | ||
1039 | case RH_GET_STATUS: | |
1040 | *(__u16 *) data_buf = m16_swap (1); OK (2); | |
1041 | case RH_GET_STATUS | RH_INTERFACE: | |
1042 | *(__u16 *) data_buf = m16_swap (0); OK (2); | |
1043 | case RH_GET_STATUS | RH_ENDPOINT: | |
1044 | *(__u16 *) data_buf = m16_swap (0); OK (2); | |
1045 | case RH_GET_STATUS | RH_CLASS: | |
1046 | *(__u32 *) data_buf = m32_swap ( | |
1047 | RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE)); | |
1048 | OK (4); | |
1049 | case RH_GET_STATUS | RH_OTHER | RH_CLASS: | |
1050 | *(__u32 *) data_buf = m32_swap (RD_RH_PORTSTAT); OK (4); | |
1051 | ||
1052 | case RH_CLEAR_FEATURE | RH_ENDPOINT: | |
1053 | switch (wValue) { | |
1054 | case (RH_ENDPOINT_STALL): OK (0); | |
1055 | } | |
1056 | break; | |
1057 | ||
1058 | case RH_CLEAR_FEATURE | RH_CLASS: | |
1059 | switch (wValue) { | |
1060 | case RH_C_HUB_LOCAL_POWER: | |
1061 | OK(0); | |
1062 | case (RH_C_HUB_OVER_CURRENT): | |
1063 | WR_RH_STAT(RH_HS_OCIC); OK (0); | |
1064 | } | |
1065 | break; | |
1066 | ||
1067 | case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS: | |
1068 | switch (wValue) { | |
1069 | case (RH_PORT_ENABLE): | |
1070 | WR_RH_PORTSTAT (RH_PS_CCS ); OK (0); | |
1071 | case (RH_PORT_SUSPEND): | |
1072 | WR_RH_PORTSTAT (RH_PS_POCI); OK (0); | |
1073 | case (RH_PORT_POWER): | |
1074 | WR_RH_PORTSTAT (RH_PS_LSDA); OK (0); | |
1075 | case (RH_C_PORT_CONNECTION): | |
1076 | WR_RH_PORTSTAT (RH_PS_CSC ); OK (0); | |
1077 | case (RH_C_PORT_ENABLE): | |
1078 | WR_RH_PORTSTAT (RH_PS_PESC); OK (0); | |
1079 | case (RH_C_PORT_SUSPEND): | |
1080 | WR_RH_PORTSTAT (RH_PS_PSSC); OK (0); | |
1081 | case (RH_C_PORT_OVER_CURRENT): | |
1082 | WR_RH_PORTSTAT (RH_PS_OCIC); OK (0); | |
1083 | case (RH_C_PORT_RESET): | |
1084 | WR_RH_PORTSTAT (RH_PS_PRSC); OK (0); | |
1085 | } | |
1086 | break; | |
1087 | ||
1088 | case RH_SET_FEATURE | RH_OTHER | RH_CLASS: | |
1089 | switch (wValue) { | |
1090 | case (RH_PORT_SUSPEND): | |
1091 | WR_RH_PORTSTAT (RH_PS_PSS ); OK (0); | |
1092 | case (RH_PORT_RESET): /* BUG IN HUP CODE *********/ | |
1093 | if (RD_RH_PORTSTAT & RH_PS_CCS) | |
1094 | WR_RH_PORTSTAT (RH_PS_PRS); | |
1095 | OK (0); | |
1096 | case (RH_PORT_POWER): | |
1097 | WR_RH_PORTSTAT (RH_PS_PPS ); OK (0); | |
1098 | case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/ | |
1099 | if (RD_RH_PORTSTAT & RH_PS_CCS) | |
1100 | WR_RH_PORTSTAT (RH_PS_PES ); | |
1101 | OK (0); | |
1102 | } | |
1103 | break; | |
1104 | ||
1105 | case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0); | |
1106 | ||
1107 | case RH_GET_DESCRIPTOR: | |
1108 | switch ((wValue & 0xff00) >> 8) { | |
1109 | case (0x01): /* device descriptor */ | |
1110 | len = min_t(unsigned int, | |
1111 | leni, | |
1112 | min_t(unsigned int, | |
1113 | sizeof (root_hub_dev_des), | |
1114 | wLength)); | |
1115 | data_buf = root_hub_dev_des; OK(len); | |
1116 | case (0x02): /* configuration descriptor */ | |
1117 | len = min_t(unsigned int, | |
1118 | leni, | |
1119 | min_t(unsigned int, | |
1120 | sizeof (root_hub_config_des), | |
1121 | wLength)); | |
1122 | data_buf = root_hub_config_des; OK(len); | |
1123 | case (0x03): /* string descriptors */ | |
1124 | if(wValue==0x0300) { | |
1125 | len = min_t(unsigned int, | |
1126 | leni, | |
1127 | min_t(unsigned int, | |
1128 | sizeof (root_hub_str_index0), | |
1129 | wLength)); | |
1130 | data_buf = root_hub_str_index0; | |
1131 | OK(len); | |
1132 | } | |
1133 | if(wValue==0x0301) { | |
1134 | len = min_t(unsigned int, | |
1135 | leni, | |
1136 | min_t(unsigned int, | |
1137 | sizeof (root_hub_str_index1), | |
1138 | wLength)); | |
1139 | data_buf = root_hub_str_index1; | |
1140 | OK(len); | |
1141 | } | |
1142 | default: | |
1143 | stat = USB_ST_STALLED; | |
1144 | } | |
1145 | break; | |
1146 | ||
1147 | case RH_GET_DESCRIPTOR | RH_CLASS: | |
1148 | { | |
1149 | __u32 temp = roothub_a (&gohci); | |
1150 | ||
1151 | data_buf [0] = 9; /* min length; */ | |
1152 | data_buf [1] = 0x29; | |
1153 | data_buf [2] = temp & RH_A_NDP; | |
1154 | data_buf [3] = 0; | |
1155 | if (temp & RH_A_PSM) /* per-port power switching? */ | |
1156 | data_buf [3] |= 0x1; | |
1157 | if (temp & RH_A_NOCP) /* no overcurrent reporting? */ | |
1158 | data_buf [3] |= 0x10; | |
1159 | else if (temp & RH_A_OCPM) /* per-port overcurrent reporting? */ | |
1160 | data_buf [3] |= 0x8; | |
1161 | ||
1162 | /* corresponds to data_buf[4-7] */ | |
1163 | datab [1] = 0; | |
1164 | data_buf [5] = (temp & RH_A_POTPGT) >> 24; | |
1165 | temp = roothub_b (&gohci); | |
1166 | data_buf [7] = temp & RH_B_DR; | |
1167 | if (data_buf [2] < 7) { | |
1168 | data_buf [8] = 0xff; | |
1169 | } else { | |
1170 | data_buf [0] += 2; | |
1171 | data_buf [8] = (temp & RH_B_DR) >> 8; | |
1172 | data_buf [10] = data_buf [9] = 0xff; | |
1173 | } | |
1174 | ||
1175 | len = min_t(unsigned int, leni, | |
1176 | min_t(unsigned int, data_buf [0], wLength)); | |
1177 | OK (len); | |
1178 | } | |
1179 | ||
1180 | case RH_GET_CONFIGURATION: *(__u8 *) data_buf = 0x01; OK (1); | |
1181 | ||
1182 | case RH_SET_CONFIGURATION: WR_RH_STAT (0x10000); OK (0); | |
1183 | ||
1184 | default: | |
1185 | dbg ("unsupported root hub command"); | |
1186 | stat = USB_ST_STALLED; | |
1187 | } | |
1188 | ||
1189 | #ifdef DEBUG | |
1190 | ohci_dump_roothub (&gohci, 1); | |
1191 | #else | |
1192 | wait_ms(1); | |
1193 | #endif | |
1194 | ||
1195 | len = min_t(int, len, leni); | |
1196 | if (data != data_buf) | |
1197 | memcpy (data, data_buf, len); | |
1198 | dev->act_len = len; | |
1199 | dev->status = stat; | |
1200 | ||
1201 | #ifdef DEBUG | |
1202 | if (transfer_len) | |
1203 | urb_priv.actual_length = transfer_len; | |
1204 | pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/); | |
1205 | #else | |
1206 | wait_ms(1); | |
1207 | #endif | |
1208 | ||
1209 | return stat; | |
1210 | } | |
1211 | ||
1212 | /*-------------------------------------------------------------------------*/ | |
1213 | ||
1214 | /* common code for handling submit messages - used for all but root hub */ | |
1215 | /* accesses. */ | |
1216 | int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer, | |
1217 | int transfer_len, struct devrequest *setup, int interval) | |
1218 | { | |
1219 | int stat = 0; | |
1220 | int maxsize = usb_maxpacket(dev, pipe); | |
1221 | int timeout; | |
1222 | ||
1223 | /* device pulled? Shortcut the action. */ | |
1224 | if (devgone == dev) { | |
1225 | dev->status = USB_ST_CRC_ERR; | |
1226 | return 0; | |
1227 | } | |
1228 | ||
1229 | #ifdef DEBUG | |
1230 | urb_priv.actual_length = 0; | |
1231 | pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe)); | |
1232 | #else | |
1233 | wait_ms(1); | |
1234 | #endif | |
1235 | if (!maxsize) { | |
1236 | err("submit_common_message: pipesize for pipe %lx is zero", | |
1237 | pipe); | |
1238 | return -1; | |
1239 | } | |
1240 | ||
1241 | if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) < 0) { | |
1242 | err("sohci_submit_job failed"); | |
1243 | return -1; | |
1244 | } | |
1245 | ||
1246 | wait_ms(10); | |
1247 | /* ohci_dump_status(&gohci); */ | |
1248 | ||
1249 | /* allow more time for a BULK device to react - some are slow */ | |
1250 | #define BULK_TO 5000 /* timeout in milliseconds */ | |
9dbc3667 | 1251 | if (usb_pipebulk(pipe)) |
265817c7 WD |
1252 | timeout = BULK_TO; |
1253 | else | |
1254 | timeout = 100; | |
1255 | ||
1256 | timeout *= 4; | |
1257 | /* wait for it to complete */ | |
1258 | for (;;) { | |
1259 | /* check whether the controller is done */ | |
1260 | stat = hc_interrupt(); | |
1261 | if (stat < 0) { | |
1262 | stat = USB_ST_CRC_ERR; | |
1263 | break; | |
1264 | } | |
1265 | if (stat >= 0 && stat != 0xff) { | |
1266 | /* 0xff is returned for an SF-interrupt */ | |
1267 | break; | |
1268 | } | |
1269 | if (--timeout) { | |
1270 | udelay(250); /* wait_ms(1); */ | |
1271 | } else { | |
1272 | err("CTL:TIMEOUT "); | |
1273 | stat = USB_ST_CRC_ERR; | |
1274 | break; | |
1275 | } | |
1276 | } | |
1277 | /* we got an Root Hub Status Change interrupt */ | |
1278 | if (got_rhsc) { | |
1279 | #ifdef DEBUG | |
1280 | ohci_dump_roothub (&gohci, 1); | |
1281 | #endif | |
1282 | got_rhsc = 0; | |
1283 | /* abuse timeout */ | |
1284 | timeout = rh_check_port_status(&gohci); | |
1285 | if (timeout >= 0) { | |
1286 | #if 0 /* this does nothing useful, but leave it here in case that changes */ | |
1287 | /* the called routine adds 1 to the passed value */ | |
1288 | usb_hub_port_connect_change(gohci.rh.dev, timeout - 1); | |
1289 | #endif | |
1290 | /* | |
1291 | * XXX | |
1292 | * This is potentially dangerous because it assumes | |
1293 | * that only one device is ever plugged in! | |
1294 | */ | |
1295 | devgone = dev; | |
1296 | } | |
1297 | } | |
1298 | ||
1299 | dev->status = stat; | |
1300 | dev->act_len = transfer_len; | |
1301 | ||
1302 | #ifdef DEBUG | |
1303 | pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe)); | |
1304 | #else | |
1305 | wait_ms(1); | |
1306 | #endif | |
1307 | ||
1308 | /* free TDs in urb_priv */ | |
1309 | urb_free_priv (&urb_priv); | |
1310 | return 0; | |
1311 | } | |
1312 | ||
1313 | /* submit routines called from usb.c */ | |
1314 | int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer, | |
1315 | int transfer_len) | |
1316 | { | |
1317 | info("submit_bulk_msg"); | |
1318 | return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0); | |
1319 | } | |
1320 | ||
1321 | int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer, | |
1322 | int transfer_len, struct devrequest *setup) | |
1323 | { | |
1324 | int maxsize = usb_maxpacket(dev, pipe); | |
1325 | ||
1326 | info("submit_control_msg"); | |
1327 | #ifdef DEBUG | |
1328 | urb_priv.actual_length = 0; | |
1329 | pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe)); | |
1330 | #else | |
1331 | wait_ms(1); | |
1332 | #endif | |
1333 | if (!maxsize) { | |
1334 | err("submit_control_message: pipesize for pipe %lx is zero", | |
1335 | pipe); | |
1336 | return -1; | |
1337 | } | |
1338 | if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) { | |
1339 | gohci.rh.dev = dev; | |
1340 | /* root hub - redirect */ | |
1341 | return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len, | |
1342 | setup); | |
1343 | } | |
1344 | ||
1345 | return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0); | |
1346 | } | |
1347 | ||
1348 | int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, | |
1349 | int transfer_len, int interval) | |
1350 | { | |
1351 | info("submit_int_msg"); | |
1352 | return -1; | |
1353 | } | |
1354 | ||
1355 | /*-------------------------------------------------------------------------* | |
1356 | * HC functions | |
1357 | *-------------------------------------------------------------------------*/ | |
1358 | ||
1359 | /* reset the HC and BUS */ | |
1360 | ||
1361 | static int hc_reset (ohci_t *ohci) | |
1362 | { | |
1363 | int timeout = 30; | |
1364 | int smm_timeout = 50; /* 0,5 sec */ | |
1365 | ||
1366 | if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */ | |
1367 | writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */ | |
1368 | info("USB HC TakeOver from SMM"); | |
1369 | while (readl (&ohci->regs->control) & OHCI_CTRL_IR) { | |
1370 | wait_ms (10); | |
1371 | if (--smm_timeout == 0) { | |
1372 | err("USB HC TakeOver failed!"); | |
1373 | return -1; | |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | /* Disable HC interrupts */ | |
1379 | writel (OHCI_INTR_MIE, &ohci->regs->intrdisable); | |
1380 | ||
1381 | dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;", | |
1382 | ohci->slot_name, | |
1383 | readl (&ohci->regs->control)); | |
1384 | ||
1385 | /* Reset USB (needed by some controllers) */ | |
1386 | writel (0, &ohci->regs->control); | |
1387 | ||
1388 | /* HC Reset requires max 10 us delay */ | |
1389 | writel (OHCI_HCR, &ohci->regs->cmdstatus); | |
1390 | while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) { | |
1391 | if (--timeout == 0) { | |
1392 | err("USB HC reset timed out!"); | |
1393 | return -1; | |
1394 | } | |
1395 | udelay (1); | |
1396 | } | |
1397 | return 0; | |
1398 | } | |
1399 | ||
1400 | /*-------------------------------------------------------------------------*/ | |
1401 | ||
1402 | /* Start an OHCI controller, set the BUS operational | |
1403 | * enable interrupts | |
1404 | * connect the virtual root hub */ | |
1405 | ||
1406 | static int hc_start (ohci_t * ohci) | |
1407 | { | |
1408 | __u32 mask; | |
1409 | unsigned int fminterval; | |
1410 | ||
1411 | ohci->disabled = 1; | |
1412 | ||
1413 | /* Tell the controller where the control and bulk lists are | |
1414 | * The lists are empty now. */ | |
1415 | ||
1416 | writel (0, &ohci->regs->ed_controlhead); | |
1417 | writel (0, &ohci->regs->ed_bulkhead); | |
1418 | ||
1419 | writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */ | |
1420 | ||
1421 | fminterval = 0x2edf; | |
1422 | writel ((fminterval * 9) / 10, &ohci->regs->periodicstart); | |
1423 | fminterval |= ((((fminterval - 210) * 6) / 7) << 16); | |
1424 | writel (fminterval, &ohci->regs->fminterval); | |
1425 | writel (0x628, &ohci->regs->lsthresh); | |
1426 | ||
1427 | /* start controller operations */ | |
1428 | ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER; | |
1429 | ohci->disabled = 0; | |
1430 | writel (ohci->hc_control, &ohci->regs->control); | |
1431 | ||
1432 | /* disable all interrupts */ | |
1433 | mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD | | |
1434 | OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC | | |
1435 | OHCI_INTR_OC | OHCI_INTR_MIE); | |
1436 | writel (mask, &ohci->regs->intrdisable); | |
1437 | /* clear all interrupts */ | |
1438 | mask &= ~OHCI_INTR_MIE; | |
1439 | writel (mask, &ohci->regs->intrstatus); | |
1440 | /* Choose the interrupts we care about now - but w/o MIE */ | |
1441 | mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO; | |
1442 | writel (mask, &ohci->regs->intrenable); | |
1443 | ||
1444 | #ifdef OHCI_USE_NPS | |
1445 | /* required for AMD-756 and some Mac platforms */ | |
1446 | writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM, | |
1447 | &ohci->regs->roothub.a); | |
1448 | writel (RH_HS_LPSC, &ohci->regs->roothub.status); | |
1449 | #endif /* OHCI_USE_NPS */ | |
1450 | ||
1451 | #define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);}) | |
1452 | /* POTPGT delay is bits 24-31, in 2 ms units. */ | |
1453 | mdelay ((roothub_a (ohci) >> 23) & 0x1fe); | |
1454 | ||
1455 | /* connect the virtual root hub */ | |
1456 | ohci->rh.devnum = 0; | |
1457 | ||
1458 | return 0; | |
1459 | } | |
1460 | ||
1461 | /*-------------------------------------------------------------------------*/ | |
1462 | ||
1463 | /* an interrupt happens */ | |
1464 | ||
1465 | static int | |
1466 | hc_interrupt (void) | |
1467 | { | |
1468 | ohci_t *ohci = &gohci; | |
1469 | struct ohci_regs *regs = ohci->regs; | |
1470 | int ints; | |
1471 | int stat = -1; | |
1472 | ||
1473 | if ((ohci->hcca->done_head != 0) && !(m32_swap (ohci->hcca->done_head) & 0x01)) { | |
1474 | ints = OHCI_INTR_WDH; | |
1475 | } else { | |
1476 | ints = readl (®s->intrstatus); | |
1477 | } | |
1478 | ||
1479 | /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */ | |
1480 | ||
1481 | if (ints & OHCI_INTR_RHSC) { | |
1482 | got_rhsc = 1; | |
1483 | } | |
1484 | ||
1485 | if (ints & OHCI_INTR_UE) { | |
1486 | ohci->disabled++; | |
1487 | err ("OHCI Unrecoverable Error, controller usb-%s disabled", | |
1488 | ohci->slot_name); | |
1489 | /* e.g. due to PCI Master/Target Abort */ | |
1490 | ||
1491 | #ifdef DEBUG | |
1492 | ohci_dump (ohci, 1); | |
1493 | #else | |
1494 | wait_ms(1); | |
1495 | #endif | |
1496 | /* FIXME: be optimistic, hope that bug won't repeat often. */ | |
1497 | /* Make some non-interrupt context restart the controller. */ | |
1498 | /* Count and limit the retries though; either hardware or */ | |
1499 | /* software errors can go forever... */ | |
1500 | hc_reset (ohci); | |
1501 | return -1; | |
1502 | } | |
1503 | ||
1504 | if (ints & OHCI_INTR_WDH) { | |
1505 | wait_ms(1); | |
1506 | writel (OHCI_INTR_WDH, ®s->intrdisable); | |
1507 | stat = dl_done_list (&gohci, dl_reverse_done_list (&gohci)); | |
1508 | writel (OHCI_INTR_WDH, ®s->intrenable); | |
1509 | } | |
1510 | ||
1511 | if (ints & OHCI_INTR_SO) { | |
1512 | dbg("USB Schedule overrun\n"); | |
1513 | writel (OHCI_INTR_SO, ®s->intrenable); | |
1514 | stat = -1; | |
1515 | } | |
1516 | ||
1517 | /* FIXME: this assumes SOF (1/ms) interrupts don't get lost... */ | |
1518 | if (ints & OHCI_INTR_SF) { | |
1519 | unsigned int frame = m16_swap (ohci->hcca->frame_no) & 1; | |
1520 | wait_ms(1); | |
1521 | writel (OHCI_INTR_SF, ®s->intrdisable); | |
1522 | if (ohci->ed_rm_list[frame] != NULL) | |
1523 | writel (OHCI_INTR_SF, ®s->intrenable); | |
1524 | stat = 0xff; | |
1525 | } | |
1526 | ||
1527 | writel (ints, ®s->intrstatus); | |
1528 | return stat; | |
1529 | } | |
1530 | ||
1531 | /*-------------------------------------------------------------------------*/ | |
1532 | ||
1533 | /*-------------------------------------------------------------------------*/ | |
1534 | ||
1535 | /* De-allocate all resources.. */ | |
1536 | ||
1537 | static void hc_release_ohci (ohci_t *ohci) | |
1538 | { | |
1539 | dbg ("USB HC release ohci usb-%s", ohci->slot_name); | |
1540 | ||
1541 | if (!ohci->disabled) | |
1542 | hc_reset (ohci); | |
1543 | } | |
1544 | ||
1545 | /*-------------------------------------------------------------------------*/ | |
1546 | ||
1547 | #define __read_32bit_c0_register(source, sel) \ | |
1548 | ({ int __res; \ | |
1549 | if (sel == 0) \ | |
1550 | __asm__ __volatile__( \ | |
1551 | "mfc0\t%0, " #source "\n\t" \ | |
1552 | : "=r" (__res)); \ | |
1553 | else \ | |
1554 | __asm__ __volatile__( \ | |
1555 | ".set\tmips32\n\t" \ | |
1556 | "mfc0\t%0, " #source ", " #sel "\n\t" \ | |
1557 | ".set\tmips0\n\t" \ | |
1558 | : "=r" (__res)); \ | |
1559 | __res; \ | |
1560 | }) | |
1561 | ||
1562 | #define read_c0_prid() __read_32bit_c0_register($15, 0) | |
1563 | ||
1564 | /* | |
1565 | * low level initalisation routine, called from usb.c | |
1566 | */ | |
1567 | static char ohci_inited = 0; | |
1568 | ||
1569 | int usb_lowlevel_init(void) | |
1570 | { | |
1571 | u32 pin_func; | |
1572 | u32 sys_freqctrl, sys_clksrc; | |
1573 | u32 prid = read_c0_prid(); | |
1574 | ||
1575 | dbg("in usb_lowlevel_init\n"); | |
1576 | ||
1577 | /* zero and disable FREQ2 */ | |
1578 | sys_freqctrl = au_readl(SYS_FREQCTRL0); | |
1579 | sys_freqctrl &= ~0xFFF00000; | |
1580 | au_writel(sys_freqctrl, SYS_FREQCTRL0); | |
1581 | ||
1582 | /* zero and disable USBH/USBD clocks */ | |
1583 | sys_clksrc = au_readl(SYS_CLKSRC); | |
1584 | sys_clksrc &= ~0x00007FE0; | |
1585 | au_writel(sys_clksrc, SYS_CLKSRC); | |
1586 | ||
1587 | sys_freqctrl = au_readl(SYS_FREQCTRL0); | |
1588 | sys_freqctrl &= ~0xFFF00000; | |
1589 | ||
1590 | sys_clksrc = au_readl(SYS_CLKSRC); | |
1591 | sys_clksrc &= ~0x00007FE0; | |
1592 | ||
1593 | switch (prid & 0x000000FF) { | |
1594 | case 0x00: /* DA */ | |
1595 | case 0x01: /* HA */ | |
1596 | case 0x02: /* HB */ | |
1597 | /* CPU core freq to 48MHz to slow it way down... */ | |
1598 | au_writel(4, SYS_CPUPLL); | |
1599 | ||
1600 | /* | |
1601 | * Setup 48MHz FREQ2 from CPUPLL for USB Host | |
1602 | */ | |
1603 | /* FRDIV2=3 -> div by 8 of 384MHz -> 48MHz */ | |
1604 | sys_freqctrl |= ((3<<22) | (1<<21) | (0<<20)); | |
1605 | au_writel(sys_freqctrl, SYS_FREQCTRL0); | |
1606 | ||
1607 | /* CPU core freq to 384MHz */ | |
1608 | au_writel(0x20, SYS_CPUPLL); | |
1609 | ||
1610 | printf("Au1000: 48MHz OHCI workaround enabled\n"); | |
1611 | break; | |
1612 | ||
1613 | default: /* HC and newer */ | |
1614 | /* FREQ2 = aux/2 = 48 MHz */ | |
1615 | sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20)); | |
1616 | au_writel(sys_freqctrl, SYS_FREQCTRL0); | |
1617 | break; | |
1618 | } | |
1619 | ||
1620 | /* | |
1621 | * Route 48MHz FREQ2 into USB Host and/or Device | |
1622 | */ | |
1623 | sys_clksrc |= ((4<<12) | (0<<11) | (0<<10)); | |
1624 | au_writel(sys_clksrc, SYS_CLKSRC); | |
1625 | ||
1626 | /* configure pins GPIO[14:9] as GPIO */ | |
1627 | pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8080); | |
1628 | ||
1629 | au_writel(pin_func, SYS_PINFUNC); | |
1630 | au_writel(0x2800, SYS_TRIOUTCLR); | |
1631 | au_writel(0x0030, SYS_OUTPUTCLR); | |
1632 | ||
1633 | dbg("OHCI board setup complete\n"); | |
1634 | ||
1635 | /* enable host controller */ | |
1636 | au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG); | |
1637 | udelay(1000); | |
1638 | au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG); | |
1639 | udelay(1000); | |
1640 | ||
1641 | /* wait for reset complete (read register twice; see au1500 errata) */ | |
1642 | while (au_readl(USB_HOST_CONFIG), | |
1643 | !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD)) | |
1644 | udelay(1000); | |
1645 | ||
1646 | dbg("OHCI clock running\n"); | |
1647 | ||
1648 | memset (&gohci, 0, sizeof (ohci_t)); | |
1649 | memset (&urb_priv, 0, sizeof (urb_priv_t)); | |
1650 | ||
1651 | /* align the storage */ | |
1652 | if ((__u32)&ghcca[0] & 0xff) { | |
1653 | err("HCCA not aligned!!"); | |
1654 | return -1; | |
1655 | } | |
1656 | phcca = &ghcca[0]; | |
1657 | info("aligned ghcca %p", phcca); | |
1658 | memset(&ohci_dev, 0, sizeof(struct ohci_device)); | |
1659 | if ((__u32)&ohci_dev.ed[0] & 0x7) { | |
1660 | err("EDs not aligned!!"); | |
1661 | return -1; | |
1662 | } | |
1663 | memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1)); | |
1664 | if ((__u32)gtd & 0x7) { | |
1665 | err("TDs not aligned!!"); | |
1666 | return -1; | |
1667 | } | |
1668 | ptd = gtd; | |
1669 | gohci.hcca = phcca; | |
1670 | memset (phcca, 0, sizeof (struct ohci_hcca)); | |
1671 | ||
1672 | gohci.disabled = 1; | |
1673 | gohci.sleeping = 0; | |
1674 | gohci.irq = -1; | |
1675 | gohci.regs = (struct ohci_regs *)(USB_OHCI_BASE | 0xA0000000); | |
1676 | ||
1677 | gohci.flags = 0; | |
1678 | gohci.slot_name = "au1x00"; | |
1679 | ||
1680 | dbg("OHCI revision: 0x%08x\n" | |
1681 | " RH: a: 0x%08x b: 0x%08x\n", | |
1682 | readl(&gohci.regs->revision), | |
1683 | readl(&gohci.regs->roothub.a), readl(&gohci.regs->roothub.b)); | |
1684 | ||
1685 | if (hc_reset (&gohci) < 0) | |
1686 | goto errout; | |
1687 | ||
1688 | /* FIXME this is a second HC reset; why?? */ | |
1689 | writel (gohci.hc_control = OHCI_USB_RESET, &gohci.regs->control); | |
1690 | wait_ms (10); | |
1691 | ||
1692 | if (hc_start (&gohci) < 0) | |
1693 | goto errout; | |
1694 | ||
1695 | #ifdef DEBUG | |
1696 | ohci_dump (&gohci, 1); | |
1697 | #else | |
1698 | wait_ms(1); | |
1699 | #endif | |
1700 | ohci_inited = 1; | |
1701 | return 0; | |
1702 | ||
1703 | errout: | |
1704 | err("OHCI initialization error\n"); | |
1705 | hc_release_ohci (&gohci); | |
1706 | /* Initialization failed */ | |
1707 | au_writel(readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG); | |
1708 | return -1; | |
1709 | } | |
1710 | ||
1711 | int usb_lowlevel_stop(void) | |
1712 | { | |
1713 | /* this gets called really early - before the controller has */ | |
1714 | /* even been initialized! */ | |
1715 | if (!ohci_inited) | |
1716 | return 0; | |
1717 | /* TODO release any interrupts, etc. */ | |
1718 | /* call hc_release_ohci() here ? */ | |
1719 | hc_reset (&gohci); | |
1720 | /* may not want to do this */ | |
1721 | /* Disable clock */ | |
1722 | au_writel(readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG); | |
1723 | return 0; | |
1724 | } | |
1725 | ||
1726 | #endif /* CONFIG_USB_OHCI */ |