2
* Part of this code has been derived from linux:
3
* Universal Host Controller Interface driver for USB (take II).
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)
13
* HW-initalization based on material of
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
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.
27
* SPDX-License-Identifier: GPL-2.0+
30
/**********************************************************************
33
* The framelist / Transfer descriptor / Queue Heads are similar like
34
* in the linux usb_uhci.c.
36
* During initialization, the following skeleton is allocated in init_skel:
38
* framespecific | common chain
41
* [ 0 ]-----> TD ---------\
42
* [ 1 ]-----> TD ----------> TD ------> QH -------> QH -------> QH ---> NULL
44
* [1023]-----> TD --------/
47
* 7 TDs for 1 TD for Start of Start of End Chain
48
* INT (2-128ms) 1ms-INT CTRL Chain BULK Chain
51
* Since this is a bootloader, the isochronous transfer descriptor have been removed.
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.
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.
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.
80
#include <asm/leon3.h>
81
#include <asm/processor.h>
83
#ifdef CONFIG_USB_UHCI
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 */
91
extern int leon3_snooping_avail;
93
#define out16r(address,data) (*(unsigned short *)(address) = \
95
(((unsigned short)(data)&0xff)<<8) | \
96
(((unsigned short)(data)&0xff00)>>8) \
99
#define out16r(address,data) _out16r((unsigned int)(address), (unsigned short)(data))
100
void _out16r(unsigned int address, unsigned short data)
102
unsigned short val = (unsigned short)((((unsigned short)(data) & 0xff)
103
<< 8) | (((unsigned short)(data)
105
#ifdef UHCI_DEBUG_REGS
106
printf("out16r(0x%lx,0x%04x = 0x%04x)\n", address, val, data);
108
*(unsigned short *)(address) = val;
111
#define out32r(address,data) _out32r((unsigned int)(address), (unsigned int)(data))
112
void _out32r(unsigned int address, unsigned int data)
114
unsigned int val = (unsigned int)((((unsigned int)(data) & 0x000000ff)
115
<< 24) | (((unsigned int)(data) &
117
(((unsigned int)(data) & 0x00ff0000)
118
>> 8) | (((unsigned int)(data) &
120
#ifdef UHCI_DEBUG_REGS
121
printf("out32r(0x%lx,0x%lx = 0x%lx)\n", address, val, data);
123
*(unsigned int *)address = val;
126
#define in16r(address) _in16r((unsigned int)(address))
127
unsigned short _in16r(unsigned int address)
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);
137
#define in32r(address) _in32r((unsigned int)(address))
138
unsigned int _in32r(unsigned int address)
140
unsigned int val = sparc_load_reg_cachemiss(address);
142
((val << 24) & 0xff000000) | ((val << 8) & 0xff0000) | ((val >> 8) &
144
((val >> 24) & 0xff);
145
#ifdef UHCI_DEBUG_REGS
146
printf("in32r(0x%lx): 0x%08x\n", address, val);
151
#define READ32(address) sparc_load_reg_cachemiss((unsigned int)(address))
153
/*#define USB_UHCI_DEBUG*/
154
#undef USB_UHCI_DEBUG
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)
161
#define USB_UHCI_PRINTF(fmt,args...)
164
static int grusb_irq = -1; /* irq vector, if -1 uhci is stopped / reseted */
165
unsigned int usb_base_addr; /* base address */
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) */
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 */
177
static unsigned long framelist[1024] __attribute__ ((aligned(0x1000))); /* frame list */
179
static struct virt_root_hub rh; /* struct for root hub */
181
/**********************************************************************
182
* some forward decleration
184
int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
185
void *buffer, int transfer_len,
186
struct devrequest *setup);
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
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)
195
td->link = swap_32(link);
196
td->status = swap_32(status);
197
if ((info & UHCI_PID) == 0)
199
td->info = swap_32(info);
200
td->buffer = swap_32(buffer);
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.
209
void usb_fill_qh(uhci_qh_t * qh, unsigned long head, unsigned long element)
211
qh->head = swap_32(head);
212
qh->element = swap_32(element);
216
/* get the status of a td->status
218
unsigned long usb_uhci_td_stat(unsigned long status)
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;
231
/* get the status and the transfered len of a td chain.
232
* called from the completion handler
234
int usb_get_td_status(uhci_td_t * td, struct usb_device *dev)
236
unsigned long temp, info;
238
uhci_td_t *mytd = td;
240
if (dev->devnum == rh.devnum)
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 */
251
if (stat) { /* status no ok */
255
temp = swap_32((unsigned long)READ32(&mytd->link));
256
mytd = (uhci_td_t *) (temp & 0xfffffff0);
257
} while ((temp & 0x1) == 0); /* process all TDs */
262
/*-------------------------------------------------------------------
264
* assembles QHs und TDs for control, bulk and iso
265
*-------------------------------------------------------------------*/
268
USB_UHCI_PRINTF("DUMMY\n");
272
/* Submits a control message. That is a Setup, Data and Status transfer.
273
* Routine does not wait for completion.
275
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
276
int transfer_len, struct devrequest *setup)
278
unsigned long destination, status;
279
int maxsze = usb_maxpacket(dev, pipe);
280
unsigned long dataptr;
287
("uhci_submit_control_urb: pipesize for pipe %lx is zero\n",
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,
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 */
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);
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]);
313
dataptr = (unsigned long)buffer;
316
/* If direction is "send", change the frame from SETUP (0x2D)
317
to OUT (0xE1). Else change it from SETUP to IN (0x69). */
319
(pipe & PIPE_DEVEP_MASK) | ((pipe & USB_DIR_IN) ==
320
0 ? USB_PID_OUT : USB_PID_IN);
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]);
335
/* Build the final TD for control status */
336
/* It's only IN if the pipe is out AND we aren't expecting data */
338
destination &= ~UHCI_PID;
339
if (((pipe & USB_DIR_IN) == 0) || (transfer_len == 0))
340
destination |= USB_PID_IN;
342
destination |= USB_PID_OUT;
343
destination |= 1 << TD_TOKEN_TOGGLE; /* End in Data1 */
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,
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;
356
qh_cntrl.dev_ptr = (unsigned long)dev;
357
/* fill in tmp_td_chain */
359
qh_cntrl.element = swap_32((unsigned long)&tmp_td[0]);
363
/*-------------------------------------------------------------------
364
* Prepare TDs for bulk transfers.
366
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
369
unsigned long destination, status, info;
370
unsigned long dataptr;
371
int maxsze = usb_maxpacket(dev, pipe);
375
if (transfer_len < 0) {
376
printf("Negative transfer length in submit_bulk\n");
381
/* The "pipe" thing contains the destination in bits 8--18. */
382
destination = (pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe);
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 */
388
dataptr = (unsigned long)buffer;
393
/* pktsze bytes of data */
395
destination | (((pktsze - 1) & UHCI_NULL_DATA_SIZE) << 21) |
397
(dev, usb_pipeendpoint(pipe),
398
usb_pipeout(pipe)) << TD_TOKEN_TOGGLE);
400
if ((len - pktsze) == 0)
401
status |= TD_CTRL_IOC; /* last one generates INT */
403
usb_fill_td(&tmp_td[i], UHCI_PTR_TERM, status, info, dataptr, (unsigned long)dev); /* Status, pktsze bytes of data */
405
tmp_td[i - 1].link = swap_32((unsigned long)&tmp_td[i]);
409
usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
411
/* first mark the bulk QH element terminated */
412
qh_bulk.element = 0xffffffffL;
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]);
420
/* search a free interrupt td
422
uhci_td_t *uhci_alloc_int_td(void)
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];
432
/*-------------------------------------------------------------------
433
* submits USB interrupt (ie. polling ;-)
435
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
436
int transfer_len, int interval)
439
unsigned long status, destination;
440
unsigned long info, tmp;
442
if (interval < 0 || interval >= 256)
448
for (nint = 0, n = 1; nint <= 8; nint++, n += n) { /* round interval down to 2^n */
457
USB_UHCI_PRINTF("Rounded interval to %i, chain %i\n", interval, nint);
458
mytd = uhci_alloc_int_td();
460
printf("No free INT TDs found\n");
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);
468
(pipe & PIPE_DEVEP_MASK) | usb_packetid(pipe) |
469
(((transfer_len - 1) & 0x7ff) << 21);
473
(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)) <<
475
tmp = swap_32(td_int[nint].link);
476
usb_fill_td(mytd, tmp, status, info, (unsigned long)buffer,
479
tmp = swap_32((unsigned long)mytd);
480
td_int[nint].link = tmp;
482
usb_dotoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
487
/**********************************************************************
488
* Low Level functions
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);
501
out16r(usb_base_addr + USBCMD, 0);
509
while (in16r(usb_base_addr + USBCMD) & USBCMD_HCRESET) {
511
printf("USBCMD_HCRESET timed out!\n");
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);
526
/* Initialize the skeleton
528
void usb_init_skel(void)
533
for (n = 0; n < USB_MAX_TEMP_INT_TD; n++)
534
tmp_int_td[n].dev_ptr = 0L; /* no devices connected */
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 */
555
if ((n & 127) == 127)
556
framelist[n] = swap_32((unsigned long)&td_int[0]);
558
for (o = 1, m = 2; m <= 128; o++, m += m)
559
if ((n & (m - 1)) == ((m - 1) / 2))
561
swap_32((unsigned long)&td_int[o]);
566
/* check the common skeleton for completed transfers, and update the status
567
* of the "connected" device. Called from the IRQ routine.
569
void usb_check_skel(void)
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;
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 */
596
/* check the interrupt chain, ubdate the status of the appropriate device,
597
* call the appropriate irqhandler and reactivate the TD if the irqhandler
600
void usb_check_int_chain(void)
603
unsigned long link, status;
604
struct usb_device *dev;
605
uhci_td_t *td, *prevtd;
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
615
while (((i > 0) && (link != (unsigned long)&td_int[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 */
628
status |= TD_CTRL_ACTIVE;
629
td->status = swap_32(status);
630
prevtd = td; /* previous td = this td */
632
prevtd->link = READ32(&td->link); /* link previous td directly to the nex td -> unlinked */
633
/* remove device pointer */
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 */
643
/* usb interrupt service routine.
645
void handle_usb_interrupt(void)
647
unsigned short status;
648
static int error = 0;
651
* Read the interrupt status, and write it back to clear the
655
status = in16r(usb_base_addr + USBSTS);
657
if (!status) /* shared interrupt, not mine */
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);
668
("GRUSB: HW detected error(s) in USB Descriptors (STS: 0x%x)\n",
672
} else if ((status & 0x20)
673
&& ((in16r(usb_base_addr + USBCMD) & USBCMD_RS) ==
676
out16r(usb_base_addr + USBCMD,
677
USBCMD_RS | in16r(usb_base_addr +
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);
691
int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
694
ambapp_ahbdev ahbdev;
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");
701
usb_base_addr = ahbdev.address[0];
702
grusb_irq = ahbdev.irq;
704
usb_base_addr = 0xfffa0000;
707
#ifdef USB_UHCI_DEBUG
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));
717
irq_free_handler(grusb_irq);
718
USB_UHCI_PRINTF("GRUSB: at 0x%lx irq %d\n", usb_base_addr, grusb_irq);
723
irq_install_handler(grusb_irq,
724
(interrupt_handler_t *) handle_usb_interrupt, NULL);
730
int usb_lowlevel_stop(int index)
734
irq_free_handler(grusb_irq);
740
/*******************************************************************************************
742
* Since the uhci does not have a real HUB, we simulate one ;-)
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);
751
#define USB_RH_PRINTF(fmt,args...)
752
static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
755
static void usb_display_Req(unsigned short req)
760
#define WANT_USB_ROOT_HUB_HUB_DES
761
#include <usbroothubdes.h>
762
#undef WANT_USB_ROOT_HUB_HUB_DES
765
* Root Hub Control Pipe (interrupt Pipes are not supported)
768
int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
769
int transfer_len, struct devrequest *cmd)
772
int leni = transfer_len;
778
unsigned short cstatus;
780
unsigned short bmRType_bReq;
781
unsigned short wValue;
782
unsigned short wIndex;
783
unsigned short wLength;
785
if (usb_pipeint(pipe)) {
786
printf("Root-Hub submit IRQ: NOT implemented\n");
789
bmRType_bReq = cmd->requesttype | cmd->request << 8;
790
wValue = swap_16(cmd->value);
791
wIndex = swap_16(cmd->index);
792
wLength = swap_16(cmd->length);
793
usb_display_Req(bmRType_bReq);
794
for (i = 0; i < 8; i++)
796
USB_RH_PRINTF("Root-Hub: adr: %2x cmd(%1x): %02x%02x %04x %04x %04x\n",
797
dev->devnum, 8, cmd->requesttype, cmd->request, wValue,
800
switch (bmRType_bReq) {
801
/* Request Destination:
802
without flags: Device,
803
RH_INTERFACE: interface,
804
RH_ENDPOINT: endpoint,
805
RH_CLASS means HUB here,
806
RH_OTHER | RH_CLASS almost ever means HUB_PORT here
810
*(unsigned short *)data = swap_16(1);
813
case RH_GET_STATUS | RH_INTERFACE:
814
*(unsigned short *)data = swap_16(0);
817
case RH_GET_STATUS | RH_ENDPOINT:
818
*(unsigned short *)data = swap_16(0);
821
case RH_GET_STATUS | RH_CLASS:
822
*(unsigned long *)data = swap_32(0);
824
break; /* hub power ** */
825
case RH_GET_STATUS | RH_OTHER | RH_CLASS:
827
status = in16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1));
828
cstatus = ((status & USBPORTSC_CSC) >> (1 - 0)) |
829
((status & USBPORTSC_PEC) >> (3 - 1)) |
830
(rh.c_p_r[wIndex - 1] << (0 + 4));
831
status = (status & USBPORTSC_CCS) | ((status & USBPORTSC_PE) >> (2 - 1)) | ((status & USBPORTSC_SUSP) >> (12 - 2)) | ((status & USBPORTSC_PR) >> (9 - 4)) | (1 << 8) | /* power on ** */
832
((status & USBPORTSC_LSDA) << (-8 + 9));
834
*(unsigned short *)data = swap_16(status);
835
*(unsigned short *)(data + 2) = swap_16(cstatus);
838
case RH_CLEAR_FEATURE | RH_ENDPOINT:
840
case (RH_ENDPOINT_STALL):
846
case RH_CLEAR_FEATURE | RH_CLASS:
848
case (RH_C_HUB_OVER_CURRENT):
849
len = 0; /* hub power over current ** */
854
case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
855
usb_display_wValue(wValue, wIndex);
857
case (RH_PORT_ENABLE):
859
in16r(usb_base_addr + USBPORTSC1 +
861
status = (status & 0xfff5) & ~USBPORTSC_PE;
862
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
866
case (RH_PORT_SUSPEND):
868
in16r(usb_base_addr + USBPORTSC1 +
870
status = (status & 0xfff5) & ~USBPORTSC_SUSP;
871
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
875
case (RH_PORT_POWER):
876
len = 0; /* port power ** */
878
case (RH_C_PORT_CONNECTION):
880
in16r(usb_base_addr + USBPORTSC1 +
882
status = (status & 0xfff5) | USBPORTSC_CSC;
883
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
887
case (RH_C_PORT_ENABLE):
889
in16r(usb_base_addr + USBPORTSC1 +
891
status = (status & 0xfff5) | USBPORTSC_PEC;
892
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
896
case (RH_C_PORT_SUSPEND):
897
/*** WR_RH_PORTSTAT(RH_PS_PSSC); */
900
case (RH_C_PORT_OVER_CURRENT):
903
case (RH_C_PORT_RESET):
904
rh.c_p_r[wIndex - 1] = 0;
909
case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
910
usb_display_wValue(wValue, wIndex);
912
case (RH_PORT_SUSPEND):
914
in16r(usb_base_addr + USBPORTSC1 +
916
status = (status & 0xfff5) | USBPORTSC_SUSP;
917
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
921
case (RH_PORT_RESET):
923
in16r(usb_base_addr + USBPORTSC1 +
925
status = (status & 0xfff5) | USBPORTSC_PR;
926
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
929
status = (status & 0xfff5) & ~USBPORTSC_PR;
930
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
933
status = (status & 0xfff5) | USBPORTSC_PE;
934
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
937
status = (status & 0xfff5) | 0xa;
938
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
942
case (RH_PORT_POWER):
943
len = 0; /* port power ** */
945
case (RH_PORT_ENABLE):
947
in16r(usb_base_addr + USBPORTSC1 +
949
status = (status & 0xfff5) | USBPORTSC_PE;
950
out16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1),
961
case RH_GET_DESCRIPTOR:
962
switch ((wValue & 0xff00) >> 8) {
963
case (0x01): /* device descriptor */
964
i = sizeof(root_hub_config_des);
965
status = i > wLength ? wLength : i;
966
len = leni > status ? status : leni;
967
memcpy(data, root_hub_dev_des, len);
969
case (0x02): /* configuration descriptor */
970
i = sizeof(root_hub_config_des);
971
status = i > wLength ? wLength : i;
972
len = leni > status ? status : leni;
973
memcpy(data, root_hub_config_des, len);
975
case (0x03): /*string descriptors */
976
if (wValue == 0x0300) {
977
i = sizeof(root_hub_str_index0);
978
status = i > wLength ? wLength : i;
979
len = leni > status ? status : leni;
980
memcpy(data, root_hub_str_index0, len);
983
if (wValue == 0x0301) {
984
i = sizeof(root_hub_str_index1);
985
status = i > wLength ? wLength : i;
986
len = leni > status ? status : leni;
987
memcpy(data, root_hub_str_index1, len);
990
stat = USB_ST_STALLED;
994
case RH_GET_DESCRIPTOR | RH_CLASS:
995
root_hub_hub_des[2] = 2;
996
i = sizeof(root_hub_hub_des);
997
status = i > wLength ? wLength : i;
998
len = leni > status ? status : leni;
999
memcpy(data, root_hub_hub_des, len);
1001
case RH_GET_CONFIGURATION:
1002
*(unsigned char *)data = 0x01;
1005
case RH_SET_CONFIGURATION:
1009
stat = USB_ST_STALLED;
1011
USB_RH_PRINTF("Root-Hub stat %lx port1: %x port2: %x\n\n", stat,
1012
in16r(usb_base_addr + USBPORTSC1),
1013
in16r(usb_base_addr + USBPORTSC2));
1020
/********************************************************************************
1021
* Some Debug Routines
1026
static void usb_display_Req(unsigned short req)
1028
USB_RH_PRINTF("- Root-Hub Request: ");
1031
USB_RH_PRINTF("Get Status ");
1033
case RH_GET_STATUS | RH_INTERFACE:
1034
USB_RH_PRINTF("Get Status Interface ");
1036
case RH_GET_STATUS | RH_ENDPOINT:
1037
USB_RH_PRINTF("Get Status Endpoint ");
1039
case RH_GET_STATUS | RH_CLASS:
1040
USB_RH_PRINTF("Get Status Class");
1041
break; /* hub power ** */
1042
case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1043
USB_RH_PRINTF("Get Status Class Others");
1045
case RH_CLEAR_FEATURE | RH_ENDPOINT:
1046
USB_RH_PRINTF("Clear Feature Endpoint ");
1048
case RH_CLEAR_FEATURE | RH_CLASS:
1049
USB_RH_PRINTF("Clear Feature Class ");
1051
case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
1052
USB_RH_PRINTF("Clear Feature Other Class ");
1054
case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1055
USB_RH_PRINTF("Set Feature Other Class ");
1057
case RH_SET_ADDRESS:
1058
USB_RH_PRINTF("Set Address ");
1060
case RH_GET_DESCRIPTOR:
1061
USB_RH_PRINTF("Get Descriptor ");
1063
case RH_GET_DESCRIPTOR | RH_CLASS:
1064
USB_RH_PRINTF("Get Descriptor Class ");
1066
case RH_GET_CONFIGURATION:
1067
USB_RH_PRINTF("Get Configuration ");
1069
case RH_SET_CONFIGURATION:
1070
USB_RH_PRINTF("Get Configuration ");
1073
USB_RH_PRINTF("****UNKNOWN**** 0x%04X ", req);
1075
USB_RH_PRINTF("\n");
1079
static void usb_display_wValue(unsigned short wValue, unsigned short wIndex)
1082
case (RH_PORT_ENABLE):
1083
USB_RH_PRINTF("Root-Hub: Enable Port %d\n", wIndex);
1085
case (RH_PORT_SUSPEND):
1086
USB_RH_PRINTF("Root-Hub: Suspend Port %d\n", wIndex);
1088
case (RH_PORT_POWER):
1089
USB_RH_PRINTF("Root-Hub: Port Power %d\n", wIndex);
1091
case (RH_C_PORT_CONNECTION):
1092
USB_RH_PRINTF("Root-Hub: C Port Connection Port %d\n", wIndex);
1094
case (RH_C_PORT_ENABLE):
1095
USB_RH_PRINTF("Root-Hub: C Port Enable Port %d\n", wIndex);
1097
case (RH_C_PORT_SUSPEND):
1098
USB_RH_PRINTF("Root-Hub: C Port Suspend Port %d\n", wIndex);
1100
case (RH_C_PORT_OVER_CURRENT):
1101
USB_RH_PRINTF("Root-Hub: C Port Over Current Port %d\n",
1104
case (RH_C_PORT_RESET):
1105
USB_RH_PRINTF("Root-Hub: C Port reset Port %d\n", wIndex);
1108
USB_RH_PRINTF("Root-Hub: unknown %x %x\n", wValue, wIndex);
1115
/*#ifdef USB_UHCI_DEBUG*/
1117
static int usb_display_td(uhci_td_t * td)
1122
printf("TD at %p:\n", td);
1124
tmp = swap_32(READ32(&td->link));
1125
printf("Link points to 0x%08lX, %s first, %s, %s\n", tmp & 0xfffffff0,
1126
((tmp & 0x4) == 0x4) ? "Depth" : "Breath",
1127
((tmp & 0x2) == 0x2) ? "QH" : "TD",
1128
((tmp & 0x1) == 0x1) ? "invalid" : "valid");
1129
valid = ((tmp & 0x1) == 0x0);
1130
tmp = swap_32(READ32(&td->status));
1132
(" %s %ld Errors %s %s %s \n %s %s %s %s %s %s\n Len 0x%lX\n",
1133
(((tmp >> 29) & 0x1) == 0x1) ? "SPD Enable" : "SPD Disable",
1134
((tmp >> 28) & 0x3),
1135
(((tmp >> 26) & 0x1) == 0x1) ? "Low Speed" : "Full Speed",
1136
(((tmp >> 25) & 0x1) == 0x1) ? "ISO " : "",
1137
(((tmp >> 24) & 0x1) == 0x1) ? "IOC " : "",
1138
(((tmp >> 23) & 0x1) == 0x1) ? "Active " : "Inactive ",
1139
(((tmp >> 22) & 0x1) == 0x1) ? "Stalled" : "",
1140
(((tmp >> 21) & 0x1) == 0x1) ? "Data Buffer Error" : "",
1141
(((tmp >> 20) & 0x1) == 0x1) ? "Babble" : "",
1142
(((tmp >> 19) & 0x1) == 0x1) ? "NAK" : "",
1143
(((tmp >> 18) & 0x1) == 0x1) ? "Bitstuff Error" : "",
1145
tmp = swap_32(READ32(&td->info));
1146
printf(" MaxLen 0x%lX\n", ((tmp >> 21) & 0x7FF));
1147
printf(" %sEndpoint 0x%lX Dev Addr 0x%lX PID 0x%lX\n",
1148
((tmp >> 19) & 0x1) == 0x1 ? "TOGGLE " : "", ((tmp >> 15) & 0xF),
1149
((tmp >> 8) & 0x7F), tmp & 0xFF);
1150
tmp = swap_32(READ32(&td->buffer));
1151
printf(" Buffer 0x%08lX\n", tmp);
1152
printf(" DEV %08lX\n", td->dev_ptr);
1156
void usb_show_td(int max)
1160
for (i = 0; i < max; i++) {
1161
usb_display_td(&tmp_td[i]);
1166
printf("tmp_td[%d]\n", i);
1167
} while (usb_display_td(&tmp_td[i++]));
1171
void grusb_show_regs(void)
1175
tmp = in16r(usb_base_addr + USBCMD);
1176
printf(" USBCMD: 0x%04x\n", tmp);
1177
tmp = in16r(usb_base_addr + USBSTS);
1178
printf(" USBSTS: 0x%04x\n", tmp);
1179
tmp = in16r(usb_base_addr + USBINTR);
1180
printf(" USBINTR: 0x%04x\n", tmp);
1181
tmp = in16r(usb_base_addr + USBFRNUM);
1182
printf(" FRNUM: 0x%04x\n", tmp);
1183
tmp = in32r(usb_base_addr + USBFLBASEADD);
1184
printf(" FLBASEADD: 0x%08x\n", tmp);
1185
tmp = in16r(usb_base_addr + USBSOF);
1186
printf(" SOFMOD: 0x%04x\n", tmp);
1187
tmp = in16r(usb_base_addr + USBPORTSC1);
1188
printf(" PORTSC1: 0x%04x\n", tmp);
1192
#endif /* CONFIG_USB_UHCI */