-/*
- * 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.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/**********************************************************************
- * 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 Interrupt 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 transferred 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 <ambapp.h>
-#include <asm/leon.h>
-#include <asm/leon3.h>
-#include <asm/processor.h>
-
-#ifdef CONFIG_USB_UHCI
-
-#include <usb.h>
-#include "usb_uhci.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#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 */
-
-/*
-#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 transferred 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 transferred 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);
- mdelay(50);
- out16r(usb_base_addr + USBCMD, 0);
- mdelay(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 (!gd->arch.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 (!gd->arch.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; /* transferred 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(int index, enum usb_init_type init, void **controller)
-{
- ambapp_ahbdev ahbdev;
-
- /* Find GRUSB core using AMBA Plug&Play information */
- if (ambapp_ahbslv_find(&ambapp_plb, VENDOR_GAISLER, GAISLER_UHCI,
- CONFIG_SYS_GRLIB_GRUSB_INDEX, &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(int index)
-{
- 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
-
-#define WANT_USB_ROOT_HUB_HUB_DES
-#include <usbroothubdes.h>
-#undef WANT_USB_ROOT_HUB_HUB_DES
-
-/*
- * 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);
- mdelay(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);
- mdelay(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 */
projects / oweals / u-boot.git / commitdiff