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u-boot/board/mpl/common/usb_uhci.c
Wolfgang Denk 460c322f13 (re)enabled scsi commands do_scsi() and do_scsiboot() 
Patch by Denis Peter, 06 Dec 2004
2005-08-04 01:14:12 +02:00

1169 lines
35 KiB
C
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/*
* Part of this code has been derived from linux:
* Universal Host Controller Interface driver for USB (take II).
*
* (c) 1999-2001 Georg Acher, acher@in.tum.de (executive slave) (base guitar)
* Deti Fliegl, deti@fliegl.de (executive slave) (lead voice)
* Thomas Sailer, sailer@ife.ee.ethz.ch (chief consultant) (cheer leader)
* Roman Weissgaerber, weissg@vienna.at (virt root hub) (studio porter)
* (c) 2000 Yggdrasil Computing, Inc. (port of new PCI interface support
* from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
* (C) 2000 David Brownell, david-b@pacbell.net (usb-ohci.c)
*
* HW-initalization based on material of
*
* (C) Copyright 1999 Linus Torvalds
* (C) Copyright 1999 Johannes Erdfelt
* (C) Copyright 1999 Randy Dunlap
* (C) Copyright 1999 Gregory P. Smith
*
*
* Adapted for U-Boot:
* (C) Copyright 2001 Denis Peter, MPL AG Switzerland
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
*/
/**********************************************************************
* How it works:
* -------------
* The framelist / Transfer descriptor / Queue Heads are similar like
* in the linux usb_uhci.c.
*
* During initialization, the following skeleton is allocated in init_skel:
*
* framespecific | common chain
*
* framelist[]
* [ 0 ]-----> TD ---------\
* [ 1 ]-----> TD ----------> TD ------> QH -------> QH -------> QH ---> NULL
* ... TD ---------/
* [1023]-----> TD --------/
*
* ^^ ^^ ^^ ^^ ^^
* 7 TDs for 1 TD for Start of Start of End Chain
* INT (2-128ms) 1ms-INT CTRL Chain BULK Chain
*
*
* Since this is a bootloader, the isochronous transfer descriptor have been removed.
*
* Interrupt Transfers.
* --------------------
* For Interupt transfers USB_MAX_TEMP_INT_TD Transfer descriptor are available. They
* will be inserted after the appropriate (depending the interval setting) skeleton TD.
* If an interrupt has been detected the dev->irqhandler is called. The status and number
* of transfered bytes is stored in dev->irq_status resp. dev->irq_act_len. If the
* dev->irqhandler returns 0, the interrupt TD is removed and disabled. If an 1 is returned,
* the interrupt TD will be reactivated.
*
* Control Transfers
* -----------------
* Control Transfers are issued by filling the tmp_td with the appropriate data and connect
* them to the qh_cntrl queue header. Before other control/bulk transfers can be issued,
* the programm has to wait for completion. This does not allows asynchronous data transfer.
*
* Bulk Transfers
* --------------
* Bulk Transfers are issued by filling the tmp_td with the appropriate data and connect
* them to the qh_bulk queue header. Before other control/bulk transfers can be issued,
* the programm has to wait for completion. This does not allows asynchronous data transfer.
*
*
*/
#include <common.h>
#include <pci.h>
#ifdef CONFIG_USB_UHCI
#include <usb.h>
#include "usb_uhci.h"
#define USB_MAX_TEMP_TD 128 /* number of temporary TDs for bulk and control transfers */
#define USB_MAX_TEMP_INT_TD 32 /* number of temporary TDs for Interrupt transfers */
#undef USB_UHCI_DEBUG
#ifdef USB_UHCI_DEBUG
#define USB_UHCI_PRINTF(fmt,args...) printf (fmt ,##args)
#else
#define USB_UHCI_PRINTF(fmt,args...)
#endif
static int irqvec = -1; /* irq vector, if -1 uhci is stopped / reseted */
unsigned int usb_base_addr; /* base address */
static uhci_td_t td_int[8]; /* Interrupt Transfer descriptors */
static uhci_qh_t qh_cntrl; /* control Queue Head */
static uhci_qh_t qh_bulk; /* bulk Queue Head */
static uhci_qh_t qh_end; /* end Queue Head */
static uhci_td_t td_last; /* last TD (linked with end chain) */
/* temporary tds */
static uhci_td_t tmp_td[USB_MAX_TEMP_TD]; /* temporary bulk/control td's */
static uhci_td_t tmp_int_td[USB_MAX_TEMP_INT_TD]; /* temporary interrupt td's */
static unsigned long framelist[1024] __attribute__ ((aligned (0x1000))); /* frame list */
static struct virt_root_hub rh; /* struct for root hub */
/**********************************************************************
* some forward decleration
*/
int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
void *buffer, int transfer_len,struct devrequest *setup);
/* fill a td with the approproiate data. Link, status, info and buffer
* are used by the USB controller itselfes, dev is used to identify the
* "connected" device
*/
void usb_fill_td(uhci_td_t* td,unsigned long link,unsigned long status,
unsigned long info, unsigned long buffer, unsigned long dev)
{
td->link=swap_32(link);
td->status=swap_32(status);
td->info=swap_32(info);
td->buffer=swap_32(buffer);
td->dev_ptr=dev;
}
/* fill a qh with the approproiate data. Head and element are used by the USB controller
* itselfes. As soon as a valid dev_ptr is filled, a td chain is connected to the qh.
* Please note, that after completion of the td chain, the entry element is removed /
* marked invalid by the USB controller.
*/
void usb_fill_qh(uhci_qh_t* qh,unsigned long head,unsigned long element)
{
qh->head=swap_32(head);
qh->element=swap_32(element);
qh->dev_ptr=0L;
}
/* get the status of a td->status
*/
unsigned long usb_uhci_td_stat(unsigned long status)
{
unsigned long result=0;
result |= (status & TD_CTRL_NAK) ? USB_ST_NAK_REC : 0;
result |= (status & TD_CTRL_STALLED) ? USB_ST_STALLED : 0;
result |= (status & TD_CTRL_DBUFERR) ? USB_ST_BUF_ERR : 0;
result |= (status & TD_CTRL_BABBLE) ? USB_ST_BABBLE_DET : 0;
result |= (status & TD_CTRL_CRCTIMEO) ? USB_ST_CRC_ERR : 0;
result |= (status & TD_CTRL_BITSTUFF) ? USB_ST_BIT_ERR : 0;
result |= (status & TD_CTRL_ACTIVE) ? USB_ST_NOT_PROC : 0;
return result;
}
/* get the status and the transfered len of a td chain.
* called from the completion handler
*/
int usb_get_td_status(uhci_td_t *td,struct usb_device *dev)
{
unsigned long temp,info;
unsigned long stat;
uhci_td_t *mytd=td;
if(dev->devnum==rh.devnum)
return 0;
dev->act_len=0;
stat=0;
do {
temp=swap_32((unsigned long)mytd->status);
stat=usb_uhci_td_stat(temp);
info=swap_32((unsigned long)mytd->info);
if(((info & 0xff)!= USB_PID_SETUP) &&
(((info >> 21) & 0x7ff)!= 0x7ff) &&
(temp & 0x7FF)!=0x7ff)
{ /* if not setup and not null data pack */
dev->act_len+=(temp & 0x7FF) + 1; /* the transfered len is act_len + 1 */
}
if(stat) { /* status no ok */
dev->status=stat;
return -1;
}
temp=swap_32((unsigned long)mytd->link);
mytd=(uhci_td_t *)(temp & 0xfffffff0);
}while((temp & 0x1)==0); /* process all TDs */
dev->status=stat;
return 0; /* Ok */
}
/*-------------------------------------------------------------------
* LOW LEVEL STUFF
* assembles QHs und TDs for control, bulk and iso
*-------------------------------------------------------------------*/
/* Submits a control message. That is a Setup, Data and Status transfer.
* Routine does not wait for completion.
*/
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int transfer_len,struct devrequest *setup)
{
unsigned long destination, status;
int maxsze = usb_maxpacket(dev, pipe);
unsigned long dataptr;
int len;
int pktsze;
int i=0;
if (!maxsze) {
USB_UHCI_PRINTF("uhci_submit_control_urb: pipesize for pipe %lx is zero\n", pipe);
return -1;
}
if(((pipe>>8)&0x7f)==rh.devnum) {
/* this is the root hub -> redirect it */
return uhci_submit_rh_msg(dev,pipe,buffer,transfer_len,setup);
}
USB_UHCI_PRINTF("uhci_submit_control start len %x, maxsize %x\n",transfer_len,maxsze);
/* The "pipe" thing contains the destination in bits 8--18 */
destination = (pipe & PIPE_DEVEP_MASK) | USB_PID_SETUP; /* Setup stage */
/* 3 errors */
status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
/* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD); */
/* Build the TD for the control request, try forever, 8 bytes of data */
usb_fill_td(&tmp_td[i],UHCI_PTR_TERM ,status, destination | (7 << 21),(unsigned long)setup,(unsigned long)dev);
#if 0
{
char *sp=(char *)setup;
printf("SETUP to pipe %lx: %x %x %x %x %x %x %x %x\n", pipe,
sp[0],sp[1],sp[2],sp[3],sp[4],sp[5],sp[6],sp[7]);
}
#endif
dataptr = (unsigned long)buffer;
len=transfer_len;
/* If direction is "send", change the frame from SETUP (0x2D)
to OUT (0xE1). Else change it from SETUP to IN (0x69). */
destination = (pipe & PIPE_DEVEP_MASK) | ((pipe & USB_DIR_IN)==0 ? USB_PID_OUT : USB_PID_IN);
while (len > 0) {
/* data stage */
pktsze = len;
i++;
if (pktsze > maxsze)
pktsze = maxsze;
destination ^= 1 << TD_TOKEN_TOGGLE; /* toggle DATA0/1 */
usb_fill_td(&tmp_td[i],UHCI_PTR_TERM, status, destination | ((pktsze - 1) << 21),dataptr,(unsigned long)dev); /* Status, pktsze bytes of data */
tmp_td[i-1].link=swap_32((unsigned long)&tmp_td[i]);
dataptr += pktsze;
len -= pktsze;
}
/* Build the final TD for control status */
/* It's only IN if the pipe is out AND we aren't expecting data */
destination &= ~UHCI_PID;
if (((pipe & USB_DIR_IN)==0) || (transfer_len == 0))
destination |= USB_PID_IN;
else
destination |= USB_PID_OUT;
destination |= 1 << TD_TOKEN_TOGGLE; /* End in Data1 */
i++;
status &=~TD_CTRL_SPD;
/* no limit on errors on final packet , 0 bytes of data */
usb_fill_td(&tmp_td[i],UHCI_PTR_TERM, status | TD_CTRL_IOC, destination | (UHCI_NULL_DATA_SIZE << 21),0,(unsigned long)dev);
tmp_td[i-1].link=swap_32((unsigned long)&tmp_td[i]); /* queue status td */
/* usb_show_td(i+1);*/
USB_UHCI_PRINTF("uhci_submit_control end (%d tmp_tds used)\n",i);
/* first mark the control QH element terminated */
qh_cntrl.element=0xffffffffL;
/* set qh active */
qh_cntrl.dev_ptr=(unsigned long)dev;
/* fill in tmp_td_chain */
qh_cntrl.element=swap_32((unsigned long)&tmp_td[0]);
return 0;
}
/*-------------------------------------------------------------------
* Prepare TDs for bulk transfers.
*/
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len)
{
unsigned long destination, status,info;
unsigned long dataptr;
int maxsze = usb_maxpacket(dev, pipe);
int len;
int i=0;
if(transfer_len < 0) {
printf("Negative transfer length in submit_bulk\n");
return -1;
}
if (!maxsze)
return -1;
/* The "pipe" thing contains the destination in bits 8--18. */
destination = (pipe & PIPE_DEVEP_MASK) | usb_packetid (pipe);
/* 3 errors */
status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
/* ((urb->transfer_flags & USB_DISABLE_SPD) ? 0 : TD_CTRL_SPD) | (3 << 27); */
/* Build the TDs for the bulk request */
len = transfer_len;
dataptr = (unsigned long)buffer;
do {
int pktsze = len;
if (pktsze > maxsze)
pktsze = maxsze;
/* pktsze bytes of data */
info = destination | (((pktsze - 1)&UHCI_NULL_DATA_SIZE) << 21) |
(usb_gettoggle (dev, usb_pipeendpoint (pipe), usb_pipeout (pipe)) << TD_TOKEN_TOGGLE);
if((len-pktsze)==0)
status |= TD_CTRL_IOC; /* last one generates INT */
usb_fill_td(&tmp_td[i],UHCI_PTR_TERM, status, info,dataptr,(unsigned long)dev); /* Status, pktsze bytes of data */
if(i>0)
tmp_td[i-1].link=swap_32((unsigned long)&tmp_td[i]);
i++;
dataptr += pktsze;
len -= pktsze;
usb_dotoggle (dev, usb_pipeendpoint (pipe), usb_pipeout (pipe));
} while (len > 0);
/* first mark the bulk QH element terminated */
qh_bulk.element=0xffffffffL;
/* set qh active */
qh_bulk.dev_ptr=(unsigned long)dev;
/* fill in tmp_td_chain */
qh_bulk.element=swap_32((unsigned long)&tmp_td[0]);
return 0;
}
/* search a free interrupt td
*/
uhci_td_t *uhci_alloc_int_td(void)
{
int i;
for(i=0;i<USB_MAX_TEMP_INT_TD;i++) {
if(tmp_int_td[i].dev_ptr==0) /* no device assigned -> free TD */
return &tmp_int_td[i];
}
return NULL;
}
#if 0
void uhci_show_temp_int_td(void)
{
int i;
for(i=0;i<USB_MAX_TEMP_INT_TD;i++) {
if((tmp_int_td[i].dev_ptr&0x01)!=0x1L) /* no device assigned -> free TD */
printf("temp_td %d is assigned to dev %lx\n",i,tmp_int_td[i].dev_ptr);
}
printf("all others temp_tds are free\n");
}
#endif
/*-------------------------------------------------------------------
* submits USB interrupt (ie. polling ;-)
*/
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len, int interval)
{
int nint, n;
unsigned long status, destination;
unsigned long info,tmp;
uhci_td_t *mytd;
if (interval < 0 || interval >= 256)
return -1;
if (interval == 0)
nint = 0;
else {
for (nint = 0, n = 1; nint <= 8; nint++, n += n) /* round interval down to 2^n */
{
if(interval < n) {
interval = n / 2;
break;
}
}
nint--;
}
USB_UHCI_PRINTF("Rounded interval to %i, chain %i\n", interval, nint);
mytd=uhci_alloc_int_td();
if(mytd==NULL) {
printf("No free INT TDs found\n");
return -1;
}
status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | TD_CTRL_IOC | (3 << 27);
/* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD) | (3 << 27);
*/
destination =(pipe & PIPE_DEVEP_MASK) | usb_packetid (pipe) | (((transfer_len - 1) & 0x7ff) << 21);
info = destination | (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)) << TD_TOKEN_TOGGLE);
tmp = swap_32(td_int[nint].link);
usb_fill_td(mytd,tmp,status, info,(unsigned long)buffer,(unsigned long)dev);
/* Link it */
tmp = swap_32((unsigned long)mytd);
td_int[nint].link=tmp;
usb_dotoggle (dev, usb_pipeendpoint (pipe), usb_pipeout (pipe));
return 0;
}
/**********************************************************************
* Low Level functions
*/
void reset_hc(void)
{
/* Global reset for 100ms */
out16r( usb_base_addr + USBPORTSC1,0x0204);
out16r( usb_base_addr + USBPORTSC2,0x0204);
out16r( usb_base_addr + USBCMD,USBCMD_GRESET | USBCMD_RS);
/* Turn off all interrupts */
out16r(usb_base_addr + USBINTR,0);
wait_ms(50);
out16r( usb_base_addr + USBCMD,0);
wait_ms(10);
}
void start_hc(void)
{
int timeout = 1000;
while(in16r(usb_base_addr + USBCMD) & USBCMD_HCRESET) {
if (!--timeout) {
printf("USBCMD_HCRESET timed out!\n");
break;
}
}
/* Turn on all interrupts */
out16r(usb_base_addr + USBINTR,USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC | USBINTR_SP);
/* Start at frame 0 */
out16r(usb_base_addr + USBFRNUM,0);
/* set Framebuffer base address */
out32r(usb_base_addr+USBFLBASEADD,(unsigned long)&framelist);
/* Run and mark it configured with a 64-byte max packet */
out16r(usb_base_addr + USBCMD,USBCMD_RS | USBCMD_CF | USBCMD_MAXP);
}
/* Initialize the skeleton
*/
void usb_init_skel(void)
{
unsigned long temp;
int n;
for(n=0;n<USB_MAX_TEMP_INT_TD;n++)
tmp_int_td[n].dev_ptr=0L; /* no devices connected */
/* last td */
usb_fill_td(&td_last,UHCI_PTR_TERM,TD_CTRL_IOC ,0,0,0L);
/* usb_fill_td(&td_last,UHCI_PTR_TERM,0,0,0); */
/* End Queue Header */
usb_fill_qh(&qh_end,UHCI_PTR_TERM,(unsigned long)&td_last);
/* Bulk Queue Header */
temp=(unsigned long)&qh_end;
usb_fill_qh(&qh_bulk,temp | UHCI_PTR_QH,UHCI_PTR_TERM);
/* Control Queue Header */
temp=(unsigned long)&qh_bulk;
usb_fill_qh(&qh_cntrl, temp | UHCI_PTR_QH,UHCI_PTR_TERM);
/* 1ms Interrupt td */
temp=(unsigned long)&qh_cntrl;
usb_fill_td(&td_int[0],temp | UHCI_PTR_QH,0,0,0,0L);
temp=(unsigned long)&td_int[0];
for(n=1; n<8; n++)
usb_fill_td(&td_int[n],temp,0,0,0,0L);
for (n = 0; n < 1024; n++) {
/* link all framelist pointers to one of the interrupts */
int m, o;
if ((n&127)==127)
framelist[n]= swap_32((unsigned long)&td_int[0]);
else
for (o = 1, m = 2; m <= 128; o++, m += m)
if ((n & (m - 1)) == ((m - 1) / 2))
framelist[n]= swap_32((unsigned long)&td_int[o]);
}
}
/* check the common skeleton for completed transfers, and update the status
* of the "connected" device. Called from the IRQ routine.
*/
void usb_check_skel(void)
{
struct usb_device *dev;
/* start with the control qh */
if(qh_cntrl.dev_ptr!=0) /* it's a device assigned check if this caused IRQ */
{
dev=(struct usb_device *)qh_cntrl.dev_ptr;
usb_get_td_status(&tmp_td[0],dev); /* update status */
if(!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
qh_cntrl.dev_ptr=0;
}
}
/* now process the bulk */
if(qh_bulk.dev_ptr!=0) /* it's a device assigned check if this caused IRQ */
{
dev=(struct usb_device *)qh_bulk.dev_ptr;
usb_get_td_status(&tmp_td[0],dev); /* update status */
if(!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
qh_bulk.dev_ptr=0;
}
}
}
/* check the interrupt chain, ubdate the status of the appropriate device,
* call the appropriate irqhandler and reactivate the TD if the irqhandler
* returns with 1
*/
void usb_check_int_chain(void)
{
int i,res;
unsigned long link,status;
struct usb_device *dev;
uhci_td_t *td,*prevtd;
for(i=0;i<8;i++) {
prevtd=&td_int[i]; /* the first previous td is the skeleton td */
link=swap_32(td_int[i].link) & 0xfffffff0; /* next in chain */
td=(uhci_td_t *)link; /* assign it */
/* all interrupt TDs are finally linked to the td_int[0].
* so we process all until we find the td_int[0].
* if int0 chain points to a QH, we're also done
*/
while(((i>0) && (link != (unsigned long)&td_int[0])) ||
((i==0) && !(swap_32(td->link) & UHCI_PTR_QH)))
{
/* check if a device is assigned with this td */
status=swap_32(td->status);
if((td->dev_ptr!=0L) && !(status & TD_CTRL_ACTIVE)) {
/* td is not active and a device is assigned -> call irqhandler */
dev=(struct usb_device *)td->dev_ptr;
dev->irq_act_len=((status & 0x7FF)==0x7FF) ? 0 : (status & 0x7FF) + 1; /* transfered length */
dev->irq_status=usb_uhci_td_stat(status); /* get status */
res=dev->irq_handle(dev); /* call irqhandler */
if(res==1) {
/* reactivate */
status|=TD_CTRL_ACTIVE;
td->status=swap_32(status);
prevtd=td; /* previous td = this td */
}
else {
prevtd->link=td->link; /* link previous td directly to the nex td -> unlinked */
/* remove device pointer */
td->dev_ptr=0L;
}
} /* if we call the irq handler */
link=swap_32(td->link) & 0xfffffff0; /* next in chain */
td=(uhci_td_t *)link; /* assign it */
} /* process all td in this int chain */
} /* next interrupt chain */
}
/* usb interrupt service routine.
*/
void handle_usb_interrupt(void)
{
unsigned short status;
/*
* Read the interrupt status, and write it back to clear the
* interrupt cause
*/
status = in16r(usb_base_addr + USBSTS);
if (!status) /* shared interrupt, not mine */
return;
if (status != 1) {
/* remove host controller halted state */
if ((status&0x20) && ((in16r(usb_base_addr+USBCMD) && USBCMD_RS)==0)) {
out16r(usb_base_addr + USBCMD, USBCMD_RS | in16r(usb_base_addr + USBCMD));
}
}
usb_check_int_chain(); /* call interrupt handlers for int tds */
usb_check_skel(); /* call completion handler for common transfer routines */
out16r(usb_base_addr+USBSTS,status);
}
/* init uhci
*/
int usb_lowlevel_init(void)
{
unsigned char temp;
int busdevfunc;
busdevfunc=pci_find_device(USB_UHCI_VEND_ID,USB_UHCI_DEV_ID,0); /* get PCI Device ID */
if(busdevfunc==-1) {
printf("Error USB UHCI (%04X,%04X) not found\n",USB_UHCI_VEND_ID,USB_UHCI_DEV_ID);
return -1;
}
pci_read_config_byte(busdevfunc,PCI_INTERRUPT_LINE,&temp);
irqvec = temp;
irq_free_handler(irqvec);
USB_UHCI_PRINTF("Interrupt Line = %d, is %d\n",irqvec);
pci_read_config_byte(busdevfunc,PCI_INTERRUPT_PIN,&temp);
USB_UHCI_PRINTF("Interrupt Pin = %ld\n",temp);
pci_read_config_dword(busdevfunc,PCI_BASE_ADDRESS_4,&usb_base_addr);
USB_UHCI_PRINTF("IO Base Address = 0x%lx\n",usb_base_addr);
usb_base_addr&=0xFFFFFFF0;
usb_base_addr+=CFG_ISA_IO_BASE_ADDRESS;
rh.devnum = 0;
usb_init_skel();
reset_hc();
start_hc();
irq_install_handler(irqvec, (interrupt_handler_t *)handle_usb_interrupt, NULL);
return 0;
}
/* stop uhci
*/
int usb_lowlevel_stop(void)
{
if(irqvec==-1)
return 1;
irq_free_handler(irqvec);
reset_hc();
irqvec=-1;
return 0;
}
/*******************************************************************************************
* Virtual Root Hub
* Since the uhci does not have a real HUB, we simulate one ;-)
*/
#undef USB_RH_DEBUG
#ifdef USB_RH_DEBUG
#define USB_RH_PRINTF(fmt,args...) printf (fmt ,##args)
static void usb_display_wValue(unsigned short wValue,unsigned short wIndex);
static void usb_display_Req(unsigned short req);
#else
#define USB_RH_PRINTF(fmt,args...)
static void usb_display_wValue(unsigned short wValue,unsigned short wIndex) {}
static void usb_display_Req(unsigned short req) {}
#endif
static unsigned char root_hub_dev_des[] =
{
0x12, /* __u8 bLength; */
0x01, /* __u8 bDescriptorType; Device */
0x00, /* __u16 bcdUSB; v1.0 */
0x01,
0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
0x00, /* __u8 bDeviceSubClass; */
0x00, /* __u8 bDeviceProtocol; */
0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
0x00, /* __u16 idVendor; */
0x00,
0x00, /* __u16 idProduct; */
0x00,
0x00, /* __u16 bcdDevice; */
0x00,
0x01, /* __u8 iManufacturer; */
0x00, /* __u8 iProduct; */
0x00, /* __u8 iSerialNumber; */
0x01 /* __u8 bNumConfigurations; */
};
/* Configuration descriptor */
static unsigned char root_hub_config_des[] =
{
0x09, /* __u8 bLength; */
0x02, /* __u8 bDescriptorType; Configuration */
0x19, /* __u16 wTotalLength; */
0x00,
0x01, /* __u8 bNumInterfaces; */
0x01, /* __u8 bConfigurationValue; */
0x00, /* __u8 iConfiguration; */
0x40, /* __u8 bmAttributes;
Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
0x00, /* __u8 MaxPower; */
/* interface */
0x09, /* __u8 if_bLength; */
0x04, /* __u8 if_bDescriptorType; Interface */
0x00, /* __u8 if_bInterfaceNumber; */
0x00, /* __u8 if_bAlternateSetting; */
0x01, /* __u8 if_bNumEndpoints; */
0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
0x00, /* __u8 if_bInterfaceSubClass; */
0x00, /* __u8 if_bInterfaceProtocol; */
0x00, /* __u8 if_iInterface; */
/* endpoint */
0x07, /* __u8 ep_bLength; */
0x05, /* __u8 ep_bDescriptorType; Endpoint */
0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
0x03, /* __u8 ep_bmAttributes; Interrupt */
0x08, /* __u16 ep_wMaxPacketSize; 8 Bytes */
0x00,
0xff /* __u8 ep_bInterval; 255 ms */
};
static unsigned char root_hub_hub_des[] =
{
0x09, /* __u8 bLength; */
0x29, /* __u8 bDescriptorType; Hub-descriptor */
0x02, /* __u8 bNbrPorts; */
0x00, /* __u16 wHubCharacteristics; */
0x00,
0x01, /* __u8 bPwrOn2pwrGood; 2ms */
0x00, /* __u8 bHubContrCurrent; 0 mA */
0x00, /* __u8 DeviceRemovable; *** 7 Ports max *** */
0xff /* __u8 PortPwrCtrlMask; *** 7 ports max *** */
};
static unsigned char root_hub_str_index0[] =
{
0x04, /* __u8 bLength; */
0x03, /* __u8 bDescriptorType; String-descriptor */
0x09, /* __u8 lang ID */
0x04, /* __u8 lang ID */
};
static unsigned char root_hub_str_index1[] =
{
28, /* __u8 bLength; */
0x03, /* __u8 bDescriptorType; String-descriptor */
'U', /* __u8 Unicode */
0, /* __u8 Unicode */
'H', /* __u8 Unicode */
0, /* __u8 Unicode */
'C', /* __u8 Unicode */
0, /* __u8 Unicode */
'I', /* __u8 Unicode */
0, /* __u8 Unicode */
' ', /* __u8 Unicode */
0, /* __u8 Unicode */
'R', /* __u8 Unicode */
0, /* __u8 Unicode */
'o', /* __u8 Unicode */
0, /* __u8 Unicode */
'o', /* __u8 Unicode */
0, /* __u8 Unicode */
't', /* __u8 Unicode */
0, /* __u8 Unicode */
' ', /* __u8 Unicode */
0, /* __u8 Unicode */
'H', /* __u8 Unicode */
0, /* __u8 Unicode */
'u', /* __u8 Unicode */
0, /* __u8 Unicode */
'b', /* __u8 Unicode */
0, /* __u8 Unicode */
};
/*
* Root Hub Control Pipe (interrupt Pipes are not supported)
*/
int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len,struct devrequest *cmd)
{
void *data = buffer;
int leni = transfer_len;
int len = 0;
int status = 0;
int stat = 0;
int i;
unsigned short cstatus;
unsigned short bmRType_bReq;
unsigned short wValue;
unsigned short wIndex;
unsigned short wLength;
if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
printf("Root-Hub submit IRQ: NOT implemented\n");
#if 0
uhci->rh.urb = urb;
uhci->rh.send = 1;
uhci->rh.interval = urb->interval;
rh_init_int_timer (urb);
#endif
return 0;
}
bmRType_bReq = cmd->requesttype | cmd->request << 8;
wValue = swap_16(cmd->value);
wIndex = swap_16(cmd->index);
wLength = swap_16(cmd->length);
usb_display_Req(bmRType_bReq);
for (i = 0; i < 8; i++)
rh.c_p_r[i] = 0;
USB_RH_PRINTF("Root-Hub: adr: %2x cmd(%1x): %02x%02x %04x %04x %04x\n",
dev->devnum, 8, cmd->requesttype,cmd->request, wValue, wIndex, wLength);
switch (bmRType_bReq) {
/* Request Destination:
without flags: Device,
RH_INTERFACE: interface,
RH_ENDPOINT: endpoint,
RH_CLASS means HUB here,
RH_OTHER | RH_CLASS almost ever means HUB_PORT here
*/
case RH_GET_STATUS:
*(unsigned short *) data = swap_16(1);
len=2;
break;
case RH_GET_STATUS | RH_INTERFACE:
*(unsigned short *) data = swap_16(0);
len=2;
break;
case RH_GET_STATUS | RH_ENDPOINT:
*(unsigned short *) data = swap_16(0);
len=2;
break;
case RH_GET_STATUS | RH_CLASS:
*(unsigned long *) data = swap_32(0);
len=4;
break; /* hub power ** */
case RH_GET_STATUS | RH_OTHER | RH_CLASS:
status = in16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1));
cstatus = ((status & USBPORTSC_CSC) >> (1 - 0)) |
((status & USBPORTSC_PEC) >> (3 - 1)) |
(rh.c_p_r[wIndex - 1] << (0 + 4));
status = (status & USBPORTSC_CCS) |
((status & USBPORTSC_PE) >> (2 - 1)) |
((status & USBPORTSC_SUSP) >> (12 - 2)) |
((status & USBPORTSC_PR) >> (9 - 4)) |
(1 << 8) | /* power on ** */
((status & USBPORTSC_LSDA) << (-8 + 9));
*(unsigned short *) data = swap_16(status);
*(unsigned short *) (data + 2) = swap_16(cstatus);
len=4;
break;
case RH_CLEAR_FEATURE | RH_ENDPOINT:
switch (wValue) {
case (RH_ENDPOINT_STALL):
len=0;
break;
}
break;
case RH_CLEAR_FEATURE | RH_CLASS:
switch (wValue) {
case (RH_C_HUB_OVER_CURRENT):
len=0; /* hub power over current ** */
break;
}
break;
case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
usb_display_wValue(wValue,wIndex);
switch (wValue) {
case (RH_PORT_ENABLE):
status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
status = (status & 0xfff5) & ~USBPORTSC_PE;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
len=0;
break;
case (RH_PORT_SUSPEND):
status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
status = (status & 0xfff5) & ~USBPORTSC_SUSP;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
len=0;
break;
case (RH_PORT_POWER):
len=0; /* port power ** */
break;
case (RH_C_PORT_CONNECTION):
status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
status = (status & 0xfff5) | USBPORTSC_CSC;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
len=0;
break;
case (RH_C_PORT_ENABLE):
status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
status = (status & 0xfff5) | USBPORTSC_PEC;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
len=0;
break;
case (RH_C_PORT_SUSPEND):
/*** WR_RH_PORTSTAT(RH_PS_PSSC); */
len=0;
break;
case (RH_C_PORT_OVER_CURRENT):
len=0;
break;
case (RH_C_PORT_RESET):
rh.c_p_r[wIndex - 1] = 0;
len=0;
break;
}
break;
case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
usb_display_wValue(wValue,wIndex);
switch (wValue) {
case (RH_PORT_SUSPEND):
status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
status = (status & 0xfff5) | USBPORTSC_SUSP;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
len=0;
break;
case (RH_PORT_RESET):
status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
status = (status & 0xfff5) | USBPORTSC_PR;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
wait_ms(10);
status = (status & 0xfff5) & ~USBPORTSC_PR;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
udelay(10);
status = (status & 0xfff5) | USBPORTSC_PE;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
wait_ms(10);
status = (status & 0xfff5) | 0xa;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
len=0;
break;
case (RH_PORT_POWER):
len=0; /* port power ** */
break;
case (RH_PORT_ENABLE):
status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
status = (status & 0xfff5) | USBPORTSC_PE;
out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
len=0;
break;
}
break;
case RH_SET_ADDRESS:
rh.devnum = wValue;
len=0;
break;
case RH_GET_DESCRIPTOR:
switch ((wValue & 0xff00) >> 8) {
case (0x01): /* device descriptor */
i=sizeof(root_hub_config_des);
status=i > wLength ? wLength : i;
len = leni > status ? status : leni;
memcpy (data, root_hub_dev_des, len);
break;
case (0x02): /* configuration descriptor */
i=sizeof(root_hub_config_des);
status=i > wLength ? wLength : i;
len = leni > status ? status : leni;
memcpy (data, root_hub_config_des, len);
break;
case (0x03): /*string descriptors */
if(wValue==0x0300) {
i=sizeof(root_hub_str_index0);
status = i > wLength ? wLength : i;
len = leni > status ? status : leni;
memcpy (data, root_hub_str_index0, len);
break;
}
if(wValue==0x0301) {
i=sizeof(root_hub_str_index1);
status = i > wLength ? wLength : i;
len = leni > status ? status : leni;
memcpy (data, root_hub_str_index1, len);
break;
}
stat = USB_ST_STALLED;
}
break;
case RH_GET_DESCRIPTOR | RH_CLASS:
root_hub_hub_des[2] = 2;
i=sizeof(root_hub_hub_des);
status= i > wLength ? wLength : i;
len = leni > status ? status : leni;
memcpy (data, root_hub_hub_des, len);
break;
case RH_GET_CONFIGURATION:
*(unsigned char *) data = 0x01;
len = 1;
break;
case RH_SET_CONFIGURATION:
len=0;
break;
default:
stat = USB_ST_STALLED;
}
USB_RH_PRINTF("Root-Hub stat %lx port1: %x port2: %x\n\n",stat,
in16r(usb_base_addr + USBPORTSC1), in16r(usb_base_addr + USBPORTSC2));
dev->act_len=len;
dev->status=stat;
return stat;
}
/********************************************************************************
* Some Debug Routines
*/
#ifdef USB_RH_DEBUG
static void usb_display_Req(unsigned short req)
{
USB_RH_PRINTF("- Root-Hub Request: ");
switch (req) {
case RH_GET_STATUS:
USB_RH_PRINTF("Get Status ");
break;
case RH_GET_STATUS | RH_INTERFACE:
USB_RH_PRINTF("Get Status Interface ");
break;
case RH_GET_STATUS | RH_ENDPOINT:
USB_RH_PRINTF("Get Status Endpoint ");
break;
case RH_GET_STATUS | RH_CLASS:
USB_RH_PRINTF("Get Status Class");
break; /* hub power ** */
case RH_GET_STATUS | RH_OTHER | RH_CLASS:
USB_RH_PRINTF("Get Status Class Others");
break;
case RH_CLEAR_FEATURE | RH_ENDPOINT:
USB_RH_PRINTF("Clear Feature Endpoint ");
break;
case RH_CLEAR_FEATURE | RH_CLASS:
USB_RH_PRINTF("Clear Feature Class ");
break;
case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
USB_RH_PRINTF("Clear Feature Other Class ");
break;
case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
USB_RH_PRINTF("Set Feature Other Class ");
break;
case RH_SET_ADDRESS:
USB_RH_PRINTF("Set Address ");
break;
case RH_GET_DESCRIPTOR:
USB_RH_PRINTF("Get Descriptor ");
break;
case RH_GET_DESCRIPTOR | RH_CLASS:
USB_RH_PRINTF("Get Descriptor Class ");
break;
case RH_GET_CONFIGURATION:
USB_RH_PRINTF("Get Configuration ");
break;
case RH_SET_CONFIGURATION:
USB_RH_PRINTF("Get Configuration ");
break;
default:
USB_RH_PRINTF("****UNKNOWN**** 0x%04X ",req);
}
USB_RH_PRINTF("\n");
}
static void usb_display_wValue(unsigned short wValue,unsigned short wIndex)
{
switch (wValue) {
case (RH_PORT_ENABLE):
USB_RH_PRINTF("Root-Hub: Enable Port %d\n",wIndex);
break;
case (RH_PORT_SUSPEND):
USB_RH_PRINTF("Root-Hub: Suspend Port %d\n",wIndex);
break;
case (RH_PORT_POWER):
USB_RH_PRINTF("Root-Hub: Port Power %d\n",wIndex);
break;
case (RH_C_PORT_CONNECTION):
USB_RH_PRINTF("Root-Hub: C Port Connection Port %d\n",wIndex);
break;
case (RH_C_PORT_ENABLE):
USB_RH_PRINTF("Root-Hub: C Port Enable Port %d\n",wIndex);
break;
case (RH_C_PORT_SUSPEND):
USB_RH_PRINTF("Root-Hub: C Port Suspend Port %d\n",wIndex);
break;
case (RH_C_PORT_OVER_CURRENT):
USB_RH_PRINTF("Root-Hub: C Port Over Current Port %d\n",wIndex);
break;
case (RH_C_PORT_RESET):
USB_RH_PRINTF("Root-Hub: C Port reset Port %d\n",wIndex);
break;
default:
USB_RH_PRINTF("Root-Hub: unknown %x %x\n",wValue,wIndex);
break;
}
}
#endif
#ifdef USB_UHCI_DEBUG
static int usb_display_td(uhci_td_t *td)
{
unsigned long tmp;
int valid;
printf("TD at %p:\n",td);
tmp=swap_32(td->link);
printf("Link points to 0x%08lX, %s first, %s, %s\n",tmp&0xfffffff0,
((tmp & 0x4)==0x4) ? "Depth" : "Breath",
((tmp & 0x2)==0x2) ? "QH" : "TD",
((tmp & 0x1)==0x1) ? "invalid" : "valid");
valid=((tmp & 0x1)==0x0);
tmp=swap_32(td->status);
printf(" %s %ld Errors %s %s %s \n %s %s %s %s %s %s\n Len 0x%lX\n",
(((tmp>>29)&0x1)==0x1) ? "SPD Enable" : "SPD Disable",
((tmp>>28)&0x3),
(((tmp>>26)&0x1)==0x1) ? "Low Speed" : "Full Speed",
(((tmp>>25)&0x1)==0x1) ? "ISO " : "",
(((tmp>>24)&0x1)==0x1) ? "IOC " : "",
(((tmp>>23)&0x1)==0x1) ? "Active " : "Inactive ",
(((tmp>>22)&0x1)==0x1) ? "Stalled" : "",
(((tmp>>21)&0x1)==0x1) ? "Data Buffer Error" : "",
(((tmp>>20)&0x1)==0x1) ? "Babble" : "",
(((tmp>>19)&0x1)==0x1) ? "NAK" : "",
(((tmp>>18)&0x1)==0x1) ? "Bitstuff Error" : "",
(tmp&0x7ff));
tmp=swap_32(td->info);
printf(" MaxLen 0x%lX\n",((tmp>>21)&0x7FF));
printf(" %s Endpoint 0x%lX Dev Addr 0x%lX PID 0x%lX\n",((tmp>>19)&0x1)==0x1 ? "TOGGLE" : "",
((tmp>>15)&0xF),((tmp>>8)&0x7F),tmp&0xFF);
tmp=swap_32(td->buffer);
printf(" Buffer 0x%08lX\n",tmp);
printf(" DEV %08lX\n",td->dev_ptr);
return valid;
}
void usb_show_td(int max)
{
int i;
if(max>0) {
for(i=0;i<max;i++) {
usb_display_td(&tmp_td[i]);
}
}
else {
i=0;
do {
printf("tmp_td[%d]\n",i);
}while(usb_display_td(&tmp_td[i++]));
}
}
#endif
#endif /* CONFIG_USB_UHCI */
/* EOF */
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