From 1e9c26578ebbeecbaf3d8fb574957405eff17c86 Mon Sep 17 00:00:00 2001 From: Peter Tyser Date: Mon, 12 Apr 2010 22:28:18 -0500 Subject: sparc: Move cpu/leon[23] to arch/sparc/cpu/leon[23] Signed-off-by: Peter Tyser --- arch/sparc/cpu/leon3/usb_uhci.c | 1313 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 1313 insertions(+) create mode 100644 arch/sparc/cpu/leon3/usb_uhci.c (limited to 'arch/sparc/cpu/leon3/usb_uhci.c') diff --git a/arch/sparc/cpu/leon3/usb_uhci.c b/arch/sparc/cpu/leon3/usb_uhci.c new file mode 100644 index 0000000000..8f99e1db19 --- /dev/null +++ b/arch/sparc/cpu/leon3/usb_uhci.c @@ -0,0 +1,1313 @@ +/* + * 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 + * (C) Copyright 2008, Daniel Hellström, daniel@gaisler.com + * Added AMBA Plug&Play detection of GRUSB, modified interrupt handler. + * Added cache flushes where needed. + * + * 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 +#include +#include +#include +#include + +#ifdef CONFIG_USB_UHCI + +#include +#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 */ + +extern int leon3_snooping_avail; +/* +#define out16r(address,data) (*(unsigned short *)(address) = \ + (unsigned short)( \ + (((unsigned short)(data)&0xff)<<8) | \ + (((unsigned short)(data)&0xff00)>>8) \ + )) + */ +#define out16r(address,data) _out16r((unsigned int)(address), (unsigned short)(data)) +void _out16r(unsigned int address, unsigned short data) +{ + unsigned short val = (unsigned short)((((unsigned short)(data) & 0xff) + << 8) | (((unsigned short)(data) + & 0xff00) >> 8)); +#ifdef UHCI_DEBUG_REGS + printf("out16r(0x%lx,0x%04x = 0x%04x)\n", address, val, data); +#endif + *(unsigned short *)(address) = val; +} + +#define out32r(address,data) _out32r((unsigned int)(address), (unsigned int)(data)) +void _out32r(unsigned int address, unsigned int data) +{ + unsigned int val = (unsigned int)((((unsigned int)(data) & 0x000000ff) + << 24) | (((unsigned int)(data) & + 0x0000ff00) << 8) | + (((unsigned int)(data) & 0x00ff0000) + >> 8) | (((unsigned int)(data) & + 0xff000000) >> 24)); +#ifdef UHCI_DEBUG_REGS + printf("out32r(0x%lx,0x%lx = 0x%lx)\n", address, val, data); +#endif + *(unsigned int *)address = val; +} + +#define in16r(address) _in16r((unsigned int)(address)) +unsigned short _in16r(unsigned int address) +{ + unsigned short val = sparc_load_reg_cachemiss_word(address); + val = ((val << 8) & 0xff00) | ((val >> 8) & 0xff); +#ifdef UHCI_DEBUG_REGS + printf("in16r(0x%lx): 0x%04x\n", address, val); +#endif + return val; +} + +#define in32r(address) _in32r((unsigned int)(address)) +unsigned int _in32r(unsigned int address) +{ + unsigned int val = sparc_load_reg_cachemiss(address); + val = + ((val << 24) & 0xff000000) | ((val << 8) & 0xff0000) | ((val >> 8) & + 0xff00) | + ((val >> 24) & 0xff); +#ifdef UHCI_DEBUG_REGS + printf("in32r(0x%lx): 0x%08x\n", address, val); +#endif + return val; +} + +#define READ32(address) sparc_load_reg_cachemiss((unsigned int)(address)) + +/*#define USB_UHCI_DEBUG*/ +#undef USB_UHCI_DEBUG + +void usb_show_td(int max); +#ifdef USB_UHCI_DEBUG +void grusb_show_regs(void); +#define USB_UHCI_PRINTF(fmt,args...) printf (fmt ,##args) +#else +#define USB_UHCI_PRINTF(fmt,args...) +#endif + +static int grusb_irq = -1; /* irq vector, if -1 uhci is stopped / reseted */ +unsigned int usb_base_addr; /* base address */ + +static uhci_td_t td_int[8] __attribute__ ((aligned(16))); /* Interrupt Transfer descriptors */ +static uhci_qh_t qh_cntrl __attribute__ ((aligned(16))); /* control Queue Head */ +static uhci_qh_t qh_bulk __attribute__ ((aligned(16))); /* bulk Queue Head */ +static uhci_qh_t qh_end __attribute__ ((aligned(16))); /* end Queue Head */ +static uhci_td_t td_last __attribute__ ((aligned(16))); /* last TD (linked with end chain) */ + +/* temporary tds */ +static uhci_td_t tmp_td[USB_MAX_TEMP_TD] __attribute__ ((aligned(16))); /* temporary bulk/control td's */ +static uhci_td_t tmp_int_td[USB_MAX_TEMP_INT_TD] __attribute__ ((aligned(16))); /* 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); + if ((info & UHCI_PID) == 0) + info |= USB_PID_OUT; + 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)READ32(&mytd->status)); + stat = usb_uhci_td_stat(temp); + info = swap_32((unsigned long)READ32(&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)READ32(&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 + *-------------------------------------------------------------------*/ +int dummy(void) +{ + USB_UHCI_PRINTF("DUMMY\n"); + return 0; +} + +/* 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); +#ifdef DEBUG_EXTRA + { + 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 */ + dummy(); + 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; +} + +/*------------------------------------------------------------------- + * 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, USB_PID_OUT, 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, USB_PID_OUT, 0, 0L); + temp = (unsigned long)&td_int[0]; + for (n = 1; n < 8; n++) + usb_fill_td(&td_int[n], temp, 0, USB_PID_OUT, 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; + /* Flush cache now that hardware updated DATA and TDs/QHs */ + if (!leon3_snooping_avail) + sparc_dcache_flush_all(); + 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; + /* Flush cache now that hardware updated DATA and TDs/QHs */ + if (!leon3_snooping_avail) + sparc_dcache_flush_all(); + 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(READ32(&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(READ32(&td->link)) & UHCI_PTR_QH))) { + /* check if a device is assigned with this td */ + status = swap_32(READ32(&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 = READ32(&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(READ32(&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; + static int error = 0; + + /* + * 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 & (USBSTS_HCPE | USBSTS_HCH)) == + (USBSTS_HCPE | USBSTS_HCH)) { + /* Stop due to bug in driver, or hardware */ + out16r(usb_base_addr + USBSTS, status); + out16r(usb_base_addr + USBCMD, + USBCMD_HCRESET | USBCMD_GRESET); + printf + ("GRUSB: HW detected error(s) in USB Descriptors (STS: 0x%x)\n", + status); + usb_show_td(8); + return; + } else if ((status & 0x20) + && ((in16r(usb_base_addr + USBCMD) & USBCMD_RS) == + 0)) { + if (error < 10) { + out16r(usb_base_addr + USBCMD, + USBCMD_RS | in16r(usb_base_addr + + USBCMD)); + error++; + } + } else + error = 0; + } + 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; + ambapp_ahbdev ahbdev; + + /* Find GRUSB core using AMBA Plug&Play information */ + if (ambapp_ahbslv_first(VENDOR_GAISLER, GAISLER_UHCI, &ahbdev) != 1) { + printf("USB UHCI: Failed to find GRUSB controller\n"); + return -1; + } + usb_base_addr = ahbdev.address[0]; + grusb_irq = ahbdev.irq; + /* + usb_base_addr = 0xfffa0000; + grusb_irq = 10; + */ +#ifdef USB_UHCI_DEBUG + grusb_show_regs(); +#endif + memset(td_int, 0, sizeof(td_int)); + memset(tmp_td, 0, sizeof(tmp_td)); + memset(tmp_int_td, 0, sizeof(tmp_int_td)); + memset(&qh_cntrl, 0, sizeof(qh_cntrl)); + memset(&qh_end, 0, sizeof(qh_end)); + memset(&td_last, 0, sizeof(td_last)); + + irq_free_handler(grusb_irq); + USB_UHCI_PRINTF("GRUSB: at 0x%lx irq %d\n", usb_base_addr, grusb_irq); + rh.devnum = 0; + usb_init_skel(); + reset_hc(); + start_hc(); + irq_install_handler(grusb_irq, + (interrupt_handler_t *) handle_usb_interrupt, NULL); + return 0; +} + +/* stop uhci + */ +int usb_lowlevel_stop(void) +{ + if (grusb_irq == -1) + return 1; + irq_free_handler(grusb_irq); + reset_hc(); + grusb_irq = -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 (usb_pipeint(pipe)) { + printf("Root-Hub submit IRQ: NOT implemented\n"); + 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(READ32(&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(READ32(&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(READ32(&td->info)); + printf(" MaxLen 0x%lX\n", ((tmp >> 21) & 0x7FF)); + printf(" %sEndpoint 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(READ32(&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++])); + } +} + +void grusb_show_regs(void) +{ + unsigned int tmp; + + tmp = in16r(usb_base_addr + USBCMD); + printf(" USBCMD: 0x%04x\n", tmp); + tmp = in16r(usb_base_addr + USBSTS); + printf(" USBSTS: 0x%04x\n", tmp); + tmp = in16r(usb_base_addr + USBINTR); + printf(" USBINTR: 0x%04x\n", tmp); + tmp = in16r(usb_base_addr + USBFRNUM); + printf(" FRNUM: 0x%04x\n", tmp); + tmp = in32r(usb_base_addr + USBFLBASEADD); + printf(" FLBASEADD: 0x%08x\n", tmp); + tmp = in16r(usb_base_addr + USBSOF); + printf(" SOFMOD: 0x%04x\n", tmp); + tmp = in16r(usb_base_addr + USBPORTSC1); + printf(" PORTSC1: 0x%04x\n", tmp); +} + +/*#endif*/ +#endif /* CONFIG_USB_UHCI */ + +/* EOF */ -- cgit