+++ /dev/null
-/*
- * URB OHCI HCD (Host Controller Driver) for USB on the AU1x00.
- *
- * (C) Copyright 2003
- * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
- *
- * 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
- *
- * Note: Part of this code has been derived from linux
- *
- */
-/*
- * IMPORTANT NOTES
- * 1 - you MUST define LITTLEENDIAN in the configuration file for the
- * board or this driver will NOT work!
- * 2 - this driver is intended for use with USB Mass Storage Devices
- * (BBB) ONLY. There is NO support for Interrupt or Isochronous pipes!
- */
-
-#include <config.h>
-
-#if defined(CONFIG_AU1X00) && defined(CONFIG_USB_OHCI)
-
-/* #include <pci.h> no PCI on the AU1x00 */
-
-#include <common.h>
-#include <malloc.h>
-#include <asm/io.h>
-#include <asm/au1x00.h>
-#include <usb.h>
-#include "au1x00_usb_ohci.h"
-
-#define OHCI_USE_NPS /* force NoPowerSwitching mode */
-#define OHCI_VERBOSE_DEBUG /* not always helpful */
-#define OHCI_FILL_TRACE
-
-#define USBH_ENABLE_BE (1<<0)
-#define USBH_ENABLE_C (1<<1)
-#define USBH_ENABLE_E (1<<2)
-#define USBH_ENABLE_CE (1<<3)
-#define USBH_ENABLE_RD (1<<4)
-
-#ifdef LITTLEENDIAN
-#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C)
-#else
-#define USBH_ENABLE_INIT (USBH_ENABLE_CE | USBH_ENABLE_E | USBH_ENABLE_C | USBH_ENABLE_BE)
-#endif
-
-
-/* For initializing controller (mask in an HCFS mode too) */
-#define OHCI_CONTROL_INIT \
- (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
-
-#undef readl
-#undef writel
-
-#define readl(a) au_readl((long)(a))
-#define writel(v,a) au_writel((v),(int)(a))
-
-#define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
-
-#define DEBUG
-#ifdef DEBUG
-#define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
-#else
-#define dbg(format, arg...) do {} while(0)
-#endif /* DEBUG */
-#define err(format, arg...) printf("ERROR: " format "\n", ## arg)
-#define SHOW_INFO
-#ifdef SHOW_INFO
-#define info(format, arg...) printf("INFO: " format "\n", ## arg)
-#else
-#define info(format, arg...) do {} while(0)
-#endif
-
-#define m16_swap(x) swap_16(x)
-#define m32_swap(x) swap_32(x)
-
-/* global ohci_t */
-static ohci_t gohci;
-/* this must be aligned to a 256 byte boundary */
-struct ohci_hcca ghcca[1];
-/* a pointer to the aligned storage */
-struct ohci_hcca *phcca;
-/* this allocates EDs for all possible endpoints */
-struct ohci_device ohci_dev;
-/* urb_priv */
-urb_priv_t urb_priv;
-/* RHSC flag */
-int got_rhsc;
-/* device which was disconnected */
-struct usb_device *devgone;
-
-/*-------------------------------------------------------------------------*/
-
-/* AMD-756 (D2 rev) reports corrupt register contents in some cases.
- * The erratum (#4) description is incorrect. AMD's workaround waits
- * till some bits (mostly reserved) are clear; ok for all revs.
- */
-#define OHCI_QUIRK_AMD756 0xabcd
-#define read_roothub(hc, register, mask) ({ \
- u32 temp = readl (&hc->regs->roothub.register); \
- if (hc->flags & OHCI_QUIRK_AMD756) \
- while (temp & mask) \
- temp = readl (&hc->regs->roothub.register); \
- temp; })
-
-static u32 roothub_a (struct ohci *hc)
- { return read_roothub (hc, a, 0xfc0fe000); }
-static inline u32 roothub_b (struct ohci *hc)
- { return readl (&hc->regs->roothub.b); }
-static inline u32 roothub_status (struct ohci *hc)
- { return readl (&hc->regs->roothub.status); }
-static u32 roothub_portstatus (struct ohci *hc, int i)
- { return read_roothub (hc, portstatus [i], 0xffe0fce0); }
-
-
-/* forward declaration */
-static int hc_interrupt (void);
-static void
-td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer,
- int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval);
-
-/*-------------------------------------------------------------------------*
- * URB support functions
- *-------------------------------------------------------------------------*/
-
-/* free HCD-private data associated with this URB */
-
-static void urb_free_priv (urb_priv_t * urb)
-{
- int i;
- int last;
- struct td * td;
-
- last = urb->length - 1;
- if (last >= 0) {
- for (i = 0; i <= last; i++) {
- td = urb->td[i];
- if (td) {
- td->usb_dev = NULL;
- urb->td[i] = NULL;
- }
- }
- }
-}
-
-/*-------------------------------------------------------------------------*/
-
-#ifdef DEBUG
-static int sohci_get_current_frame_number (struct usb_device * dev);
-
-/* debug| print the main components of an URB
- * small: 0) header + data packets 1) just header */
-
-static void pkt_print (struct usb_device * dev, unsigned long pipe, void * buffer,
- int transfer_len, struct devrequest * setup, char * str, int small)
-{
- urb_priv_t * purb = &urb_priv;
-
- dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
- str,
- sohci_get_current_frame_number (dev),
- usb_pipedevice (pipe),
- usb_pipeendpoint (pipe),
- usb_pipeout (pipe)? 'O': 'I',
- usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
- (usb_pipecontrol (pipe)? "CTRL": "BULK"),
- purb->actual_length,
- transfer_len, dev->status);
-#ifdef OHCI_VERBOSE_DEBUG
- if (!small) {
- int i, len;
-
- if (usb_pipecontrol (pipe)) {
- printf (__FILE__ ": cmd(8):");
- for (i = 0; i < 8 ; i++)
- printf (" %02x", ((__u8 *) setup) [i]);
- printf ("\n");
- }
- if (transfer_len > 0 && buffer) {
- printf (__FILE__ ": data(%d/%d):",
- purb->actual_length,
- transfer_len);
- len = usb_pipeout (pipe)?
- transfer_len: purb->actual_length;
- for (i = 0; i < 16 && i < len; i++)
- printf (" %02x", ((__u8 *) buffer) [i]);
- printf ("%s\n", i < len? "...": "");
- }
- }
-#endif
-}
-
-/* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
-void ep_print_int_eds (ohci_t *ohci, char * str) {
- int i, j;
- __u32 * ed_p;
- for (i= 0; i < 32; i++) {
- j = 5;
- ed_p = &(ohci->hcca->int_table [i]);
- if (*ed_p == 0)
- continue;
- printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i);
- while (*ed_p != 0 && j--) {
- ed_t *ed = (ed_t *)m32_swap(ed_p);
- printf (" ed: %4x;", ed->hwINFO);
- ed_p = &ed->hwNextED;
- }
- printf ("\n");
- }
-}
-
-static void ohci_dump_intr_mask (char *label, __u32 mask)
-{
- dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
- label,
- mask,
- (mask & OHCI_INTR_MIE) ? " MIE" : "",
- (mask & OHCI_INTR_OC) ? " OC" : "",
- (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
- (mask & OHCI_INTR_FNO) ? " FNO" : "",
- (mask & OHCI_INTR_UE) ? " UE" : "",
- (mask & OHCI_INTR_RD) ? " RD" : "",
- (mask & OHCI_INTR_SF) ? " SF" : "",
- (mask & OHCI_INTR_WDH) ? " WDH" : "",
- (mask & OHCI_INTR_SO) ? " SO" : ""
- );
-}
-
-static void maybe_print_eds (char *label, __u32 value)
-{
- ed_t *edp = (ed_t *)value;
-
- if (value) {
- dbg ("%s %08x", label, value);
- dbg ("%08x", edp->hwINFO);
- dbg ("%08x", edp->hwTailP);
- dbg ("%08x", edp->hwHeadP);
- dbg ("%08x", edp->hwNextED);
- }
-}
-
-static char * hcfs2string (int state)
-{
- switch (state) {
- case OHCI_USB_RESET: return "reset";
- case OHCI_USB_RESUME: return "resume";
- case OHCI_USB_OPER: return "operational";
- case OHCI_USB_SUSPEND: return "suspend";
- }
- return "?";
-}
-
-/* dump control and status registers */
-static void ohci_dump_status (ohci_t *controller)
-{
- struct ohci_regs *regs = controller->regs;
- __u32 temp;
-
- temp = readl (®s->revision) & 0xff;
- if (temp != 0x10)
- dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
-
- temp = readl (®s->control);
- dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
- (temp & OHCI_CTRL_RWE) ? " RWE" : "",
- (temp & OHCI_CTRL_RWC) ? " RWC" : "",
- (temp & OHCI_CTRL_IR) ? " IR" : "",
- hcfs2string (temp & OHCI_CTRL_HCFS),
- (temp & OHCI_CTRL_BLE) ? " BLE" : "",
- (temp & OHCI_CTRL_CLE) ? " CLE" : "",
- (temp & OHCI_CTRL_IE) ? " IE" : "",
- (temp & OHCI_CTRL_PLE) ? " PLE" : "",
- temp & OHCI_CTRL_CBSR
- );
-
- temp = readl (®s->cmdstatus);
- dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
- (temp & OHCI_SOC) >> 16,
- (temp & OHCI_OCR) ? " OCR" : "",
- (temp & OHCI_BLF) ? " BLF" : "",
- (temp & OHCI_CLF) ? " CLF" : "",
- (temp & OHCI_HCR) ? " HCR" : ""
- );
-
- ohci_dump_intr_mask ("intrstatus", readl (®s->intrstatus));
- ohci_dump_intr_mask ("intrenable", readl (®s->intrenable));
-
- maybe_print_eds ("ed_periodcurrent", readl (®s->ed_periodcurrent));
-
- maybe_print_eds ("ed_controlhead", readl (®s->ed_controlhead));
- maybe_print_eds ("ed_controlcurrent", readl (®s->ed_controlcurrent));
-
- maybe_print_eds ("ed_bulkhead", readl (®s->ed_bulkhead));
- maybe_print_eds ("ed_bulkcurrent", readl (®s->ed_bulkcurrent));
-
- maybe_print_eds ("donehead", readl (®s->donehead));
-}
-
-static void ohci_dump_roothub (ohci_t *controller, int verbose)
-{
- __u32 temp, ndp, i;
-
- temp = roothub_a (controller);
- ndp = (temp & RH_A_NDP);
-
- if (verbose) {
- dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
- ((temp & RH_A_POTPGT) >> 24) & 0xff,
- (temp & RH_A_NOCP) ? " NOCP" : "",
- (temp & RH_A_OCPM) ? " OCPM" : "",
- (temp & RH_A_DT) ? " DT" : "",
- (temp & RH_A_NPS) ? " NPS" : "",
- (temp & RH_A_PSM) ? " PSM" : "",
- ndp
- );
- temp = roothub_b (controller);
- dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
- temp,
- (temp & RH_B_PPCM) >> 16,
- (temp & RH_B_DR)
- );
- temp = roothub_status (controller);
- dbg ("roothub.status: %08x%s%s%s%s%s%s",
- temp,
- (temp & RH_HS_CRWE) ? " CRWE" : "",
- (temp & RH_HS_OCIC) ? " OCIC" : "",
- (temp & RH_HS_LPSC) ? " LPSC" : "",
- (temp & RH_HS_DRWE) ? " DRWE" : "",
- (temp & RH_HS_OCI) ? " OCI" : "",
- (temp & RH_HS_LPS) ? " LPS" : ""
- );
- }
-
- for (i = 0; i < ndp; i++) {
- temp = roothub_portstatus (controller, i);
- dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
- i,
- temp,
- (temp & RH_PS_PRSC) ? " PRSC" : "",
- (temp & RH_PS_OCIC) ? " OCIC" : "",
- (temp & RH_PS_PSSC) ? " PSSC" : "",
- (temp & RH_PS_PESC) ? " PESC" : "",
- (temp & RH_PS_CSC) ? " CSC" : "",
-
- (temp & RH_PS_LSDA) ? " LSDA" : "",
- (temp & RH_PS_PPS) ? " PPS" : "",
- (temp & RH_PS_PRS) ? " PRS" : "",
- (temp & RH_PS_POCI) ? " POCI" : "",
- (temp & RH_PS_PSS) ? " PSS" : "",
-
- (temp & RH_PS_PES) ? " PES" : "",
- (temp & RH_PS_CCS) ? " CCS" : ""
- );
- }
-}
-
-static void ohci_dump (ohci_t *controller, int verbose)
-{
- dbg ("OHCI controller usb-%s state", controller->slot_name);
-
- /* dumps some of the state we know about */
- ohci_dump_status (controller);
- if (verbose)
- ep_print_int_eds (controller, "hcca");
- dbg ("hcca frame #%04x", controller->hcca->frame_no);
- ohci_dump_roothub (controller, 1);
-}
-
-
-#endif /* DEBUG */
-
-/*-------------------------------------------------------------------------*
- * Interface functions (URB)
- *-------------------------------------------------------------------------*/
-
-/* get a transfer request */
-
-int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
- int transfer_len, struct devrequest *setup, int interval)
-{
- ohci_t *ohci;
- ed_t * ed;
- urb_priv_t *purb_priv;
- int i, size = 0;
-
- ohci = &gohci;
-
- /* when controller's hung, permit only roothub cleanup attempts
- * such as powering down ports */
- if (ohci->disabled) {
- err("sohci_submit_job: EPIPE");
- return -1;
- }
-
- /* every endpoint has a ed, locate and fill it */
- if (!(ed = ep_add_ed (dev, pipe))) {
- err("sohci_submit_job: ENOMEM");
- return -1;
- }
-
- /* for the private part of the URB we need the number of TDs (size) */
- switch (usb_pipetype (pipe)) {
- case PIPE_BULK: /* one TD for every 4096 Byte */
- size = (transfer_len - 1) / 4096 + 1;
- break;
- case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
- size = (transfer_len == 0)? 2:
- (transfer_len - 1) / 4096 + 3;
- break;
- }
-
- if (size >= (N_URB_TD - 1)) {
- err("need %d TDs, only have %d", size, N_URB_TD);
- return -1;
- }
- purb_priv = &urb_priv;
- purb_priv->pipe = pipe;
-
- /* fill the private part of the URB */
- purb_priv->length = size;
- purb_priv->ed = ed;
- purb_priv->actual_length = 0;
-
- /* allocate the TDs */
- /* note that td[0] was allocated in ep_add_ed */
- for (i = 0; i < size; i++) {
- purb_priv->td[i] = td_alloc (dev);
- if (!purb_priv->td[i]) {
- purb_priv->length = i;
- urb_free_priv (purb_priv);
- err("sohci_submit_job: ENOMEM");
- return -1;
- }
- }
-
- if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
- urb_free_priv (purb_priv);
- err("sohci_submit_job: EINVAL");
- return -1;
- }
-
- /* link the ed into a chain if is not already */
- if (ed->state != ED_OPER)
- ep_link (ohci, ed);
-
- /* fill the TDs and link it to the ed */
- td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval);
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#ifdef DEBUG
-/* tell us the current USB frame number */
-
-static int sohci_get_current_frame_number (struct usb_device *usb_dev)
-{
- ohci_t *ohci = &gohci;
-
- return m16_swap (ohci->hcca->frame_no);
-}
-#endif
-
-/*-------------------------------------------------------------------------*
- * ED handling functions
- *-------------------------------------------------------------------------*/
-
-/* link an ed into one of the HC chains */
-
-static int ep_link (ohci_t *ohci, ed_t *edi)
-{
- volatile ed_t *ed = edi;
-
- ed->state = ED_OPER;
-
- switch (ed->type) {
- case PIPE_CONTROL:
- ed->hwNextED = 0;
- if (ohci->ed_controltail == NULL) {
- writel ((long)ed, &ohci->regs->ed_controlhead);
- } else {
- ohci->ed_controltail->hwNextED = m32_swap (ed);
- }
- ed->ed_prev = ohci->ed_controltail;
- if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
- !ohci->ed_rm_list[1] && !ohci->sleeping) {
- ohci->hc_control |= OHCI_CTRL_CLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- ohci->ed_controltail = edi;
- break;
-
- case PIPE_BULK:
- ed->hwNextED = 0;
- if (ohci->ed_bulktail == NULL) {
- writel ((long)ed, &ohci->regs->ed_bulkhead);
- } else {
- ohci->ed_bulktail->hwNextED = m32_swap (ed);
- }
- ed->ed_prev = ohci->ed_bulktail;
- if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
- !ohci->ed_rm_list[1] && !ohci->sleeping) {
- ohci->hc_control |= OHCI_CTRL_BLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- ohci->ed_bulktail = edi;
- break;
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* unlink an ed from one of the HC chains.
- * just the link to the ed is unlinked.
- * the link from the ed still points to another operational ed or 0
- * so the HC can eventually finish the processing of the unlinked ed */
-
-static int ep_unlink (ohci_t *ohci, ed_t *ed)
-{
- ed->hwINFO |= m32_swap (OHCI_ED_SKIP);
-
- switch (ed->type) {
- case PIPE_CONTROL:
- if (ed->ed_prev == NULL) {
- if (!ed->hwNextED) {
- ohci->hc_control &= ~OHCI_CTRL_CLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead);
- } else {
- ed->ed_prev->hwNextED = ed->hwNextED;
- }
- if (ohci->ed_controltail == ed) {
- ohci->ed_controltail = ed->ed_prev;
- } else {
- ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
- }
- break;
-
- case PIPE_BULK:
- if (ed->ed_prev == NULL) {
- if (!ed->hwNextED) {
- ohci->hc_control &= ~OHCI_CTRL_BLE;
- writel (ohci->hc_control, &ohci->regs->control);
- }
- writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead);
- } else {
- ed->ed_prev->hwNextED = ed->hwNextED;
- }
- if (ohci->ed_bulktail == ed) {
- ohci->ed_bulktail = ed->ed_prev;
- } else {
- ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
- }
- break;
- }
- ed->state = ED_UNLINK;
- return 0;
-}
-
-
-/*-------------------------------------------------------------------------*/
-
-/* add/reinit an endpoint; this should be done once at the usb_set_configuration command,
- * but the USB stack is a little bit stateless so we do it at every transaction
- * if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK
- * in all other cases the state is left unchanged
- * the ed info fields are setted anyway even though most of them should not change */
-
-static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe)
-{
- td_t *td;
- ed_t *ed_ret;
- volatile ed_t *ed;
-
- ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) |
- (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))];
-
- if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
- err("ep_add_ed: pending delete");
- /* pending delete request */
- return NULL;
- }
-
- if (ed->state == ED_NEW) {
- ed->hwINFO = m32_swap (OHCI_ED_SKIP); /* skip ed */
- /* dummy td; end of td list for ed */
- td = td_alloc (usb_dev);
- ed->hwTailP = m32_swap (td);
- ed->hwHeadP = ed->hwTailP;
- ed->state = ED_UNLINK;
- ed->type = usb_pipetype (pipe);
- ohci_dev.ed_cnt++;
- }
-
- ed->hwINFO = m32_swap (usb_pipedevice (pipe)
- | usb_pipeendpoint (pipe) << 7
- | (usb_pipeisoc (pipe)? 0x8000: 0)
- | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
- | usb_pipeslow (pipe) << 13
- | usb_maxpacket (usb_dev, pipe) << 16);
-
- return ed_ret;
-}
-
-/*-------------------------------------------------------------------------*
- * TD handling functions
- *-------------------------------------------------------------------------*/
-
-/* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
-
-static void td_fill (ohci_t *ohci, unsigned int info,
- void *data, int len,
- struct usb_device *dev, int index, urb_priv_t *urb_priv)
-{
- volatile td_t *td, *td_pt;
-#ifdef OHCI_FILL_TRACE
- int i;
-#endif
-
- if (index > urb_priv->length) {
- err("index > length");
- return;
- }
- /* use this td as the next dummy */
- td_pt = urb_priv->td [index];
- td_pt->hwNextTD = 0;
-
- /* fill the old dummy TD */
- td = urb_priv->td [index] = (td_t *)(m32_swap (urb_priv->ed->hwTailP) & ~0xf);
-
- td->ed = urb_priv->ed;
- td->next_dl_td = NULL;
- td->index = index;
- td->data = (__u32)data;
-#ifdef OHCI_FILL_TRACE
- if (1 || ((usb_pipetype(urb_priv->pipe) == PIPE_BULK) && usb_pipeout(urb_priv->pipe))) {
- for (i = 0; i < len; i++)
- printf("td->data[%d] %#2x\n",i, ((unsigned char *)(td->data+0x80000000))[i]);
- }
-#endif
- if (!len)
- data = 0;
-
- td->hwINFO = m32_swap (info);
- td->hwCBP = m32_swap (data);
- if (data)
- td->hwBE = m32_swap (data + len - 1);
- else
- td->hwBE = 0;
- td->hwNextTD = m32_swap (td_pt);
- td->hwPSW [0] = m16_swap (((__u32)data & 0x0FFF) | 0xE000);
-
- /* append to queue */
- td->ed->hwTailP = td->hwNextTD;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* prepare all TDs of a transfer */
-
-#define kseg_to_phys(x) ((void *)((__u32)(x) - 0x80000000))
-
-static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
- int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
-{
- ohci_t *ohci = &gohci;
- int data_len = transfer_len;
- void *data;
- int cnt = 0;
- __u32 info = 0;
- unsigned int toggle = 0;
-
- /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
- if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
- toggle = TD_T_TOGGLE;
- } else {
- toggle = TD_T_DATA0;
- usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1);
- }
- urb->td_cnt = 0;
- if (data_len)
- data = kseg_to_phys(buffer);
- else
- data = 0;
-
- switch (usb_pipetype (pipe)) {
- case PIPE_BULK:
- info = usb_pipeout (pipe)?
- TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
- while(data_len > 4096) {
- td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb);
- data += 4096; data_len -= 4096; cnt++;
- }
- info = usb_pipeout (pipe)?
- TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
- td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb);
- cnt++;
-
- if (!ohci->sleeping)
- writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
- break;
-
- case PIPE_CONTROL:
- info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
- td_fill (ohci, info, kseg_to_phys(setup), 8, dev, cnt++, urb);
- if (data_len > 0) {
- info = usb_pipeout (pipe)?
- TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
- /* NOTE: mishandles transfers >8K, some >4K */
- td_fill (ohci, info, data, data_len, dev, cnt++, urb);
- }
- info = usb_pipeout (pipe)?
- TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
- td_fill (ohci, info, data, 0, dev, cnt++, urb);
- if (!ohci->sleeping)
- writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
- break;
- }
- if (urb->length != cnt)
- dbg("TD LENGTH %d != CNT %d", urb->length, cnt);
-}
-
-/*-------------------------------------------------------------------------*
- * Done List handling functions
- *-------------------------------------------------------------------------*/
-
-
-/* calculate the transfer length and update the urb */
-
-static void dl_transfer_length(td_t * td)
-{
- __u32 tdINFO, tdBE, tdCBP;
- urb_priv_t *lurb_priv = &urb_priv;
-
- tdINFO = m32_swap (td->hwINFO);
- tdBE = m32_swap (td->hwBE);
- tdCBP = m32_swap (td->hwCBP);
-
-
- if (!(usb_pipetype (lurb_priv->pipe) == PIPE_CONTROL &&
- ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
- if (tdBE != 0) {
- if (td->hwCBP == 0)
- lurb_priv->actual_length += tdBE - td->data + 1;
- else
- lurb_priv->actual_length += tdCBP - td->data;
- }
- }
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* replies to the request have to be on a FIFO basis so
- * we reverse the reversed done-list */
-
-static td_t * dl_reverse_done_list (ohci_t *ohci)
-{
- __u32 td_list_hc;
- td_t *td_rev = NULL;
- td_t *td_list = NULL;
- urb_priv_t *lurb_priv = NULL;
-
- td_list_hc = m32_swap (ohci->hcca->done_head) & 0xfffffff0;
- ohci->hcca->done_head = 0;
-
- while (td_list_hc) {
- td_list = (td_t *)td_list_hc;
-
- if (TD_CC_GET (m32_swap (td_list->hwINFO))) {
- lurb_priv = &urb_priv;
- dbg(" USB-error/status: %x : %p",
- TD_CC_GET (m32_swap (td_list->hwINFO)), td_list);
- if (td_list->ed->hwHeadP & m32_swap (0x1)) {
- if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) {
- td_list->ed->hwHeadP =
- (lurb_priv->td[lurb_priv->length - 1]->hwNextTD & m32_swap (0xfffffff0)) |
- (td_list->ed->hwHeadP & m32_swap (0x2));
- lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1;
- } else
- td_list->ed->hwHeadP &= m32_swap (0xfffffff2);
- }
- }
-
- td_list->next_dl_td = td_rev;
- td_rev = td_list;
- td_list_hc = m32_swap (td_list->hwNextTD) & 0xfffffff0;
- }
- return td_list;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* td done list */
-static int dl_done_list (ohci_t *ohci, td_t *td_list)
-{
- td_t *td_list_next = NULL;
- ed_t *ed;
- int cc = 0;
- int stat = 0;
- /* urb_t *urb; */
- urb_priv_t *lurb_priv;
- __u32 tdINFO, edHeadP, edTailP;
-
- while (td_list) {
- td_list_next = td_list->next_dl_td;
-
- lurb_priv = &urb_priv;
- tdINFO = m32_swap (td_list->hwINFO);
-
- ed = td_list->ed;
-
- dl_transfer_length(td_list);
-
- /* error code of transfer */
- cc = TD_CC_GET (tdINFO);
- if (cc != 0) {
- dbg("ConditionCode %#x", cc);
- stat = cc_to_error[cc];
- }
-
- if (ed->state != ED_NEW) {
- edHeadP = m32_swap (ed->hwHeadP) & 0xfffffff0;
- edTailP = m32_swap (ed->hwTailP);
-
- /* unlink eds if they are not busy */
- if ((edHeadP == edTailP) && (ed->state == ED_OPER))
- ep_unlink (ohci, ed);
- }
-
- td_list = td_list_next;
- }
- return stat;
-}
-
-/*-------------------------------------------------------------------------*
- * Virtual Root Hub
- *-------------------------------------------------------------------------*/
-
-/* Device descriptor */
-static __u8 root_hub_dev_des[] =
-{
- 0x12, /* __u8 bLength; */
- 0x01, /* __u8 bDescriptorType; Device */
- 0x10, /* __u16 bcdUSB; v1.1 */
- 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,
- 0x00, /* __u8 iManufacturer; */
- 0x01, /* __u8 iProduct; */
- 0x00, /* __u8 iSerialNumber; */
- 0x01 /* __u8 bNumConfigurations; */
-};
-
-
-/* Configuration descriptor */
-static __u8 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 */
- 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
- 0x00,
- 0xff /* __u8 ep_bInterval; 255 ms */
-};
-
-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 */
- 'O', /* __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 */
-};
-
-/* Hub class-specific descriptor is constructed dynamically */
-
-
-/*-------------------------------------------------------------------------*/
-
-#define OK(x) len = (x); break
-#ifdef DEBUG
-#define WR_RH_STAT(x) {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
-#define WR_RH_PORTSTAT(x) {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
-#else
-#define WR_RH_STAT(x) writel((x), &gohci.regs->roothub.status)
-#define WR_RH_PORTSTAT(x) writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
-#endif
-#define RD_RH_STAT roothub_status(&gohci)
-#define RD_RH_PORTSTAT roothub_portstatus(&gohci,wIndex-1)
-
-/* request to virtual root hub */
-
-int rh_check_port_status(ohci_t *controller)
-{
- __u32 temp, ndp, i;
- int res;
-
- res = -1;
- temp = roothub_a (controller);
- ndp = (temp & RH_A_NDP);
- for (i = 0; i < ndp; i++) {
- temp = roothub_portstatus (controller, i);
- /* check for a device disconnect */
- if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
- (RH_PS_PESC | RH_PS_CSC)) &&
- ((temp & RH_PS_CCS) == 0)) {
- res = i;
- break;
- }
- }
- return res;
-}
-
-static int ohci_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 stat = 0;
- __u32 datab[4];
- __u8 *data_buf = (__u8 *)datab;
- __u16 bmRType_bReq;
- __u16 wValue;
- __u16 wIndex;
- __u16 wLength;
-
-#ifdef DEBUG
-urb_priv.actual_length = 0;
-pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
-#else
- wait_ms(1);
-#endif
- if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
- info("Root-Hub submit IRQ: NOT implemented");
- return 0;
- }
-
- bmRType_bReq = cmd->requesttype | (cmd->request << 8);
- wValue = m16_swap (cmd->value);
- wIndex = m16_swap (cmd->index);
- wLength = m16_swap (cmd->length);
-
- info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
- dev->devnum, 8, bmRType_bReq, 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:
- *(__u16 *) data_buf = m16_swap (1); OK (2);
- case RH_GET_STATUS | RH_INTERFACE:
- *(__u16 *) data_buf = m16_swap (0); OK (2);
- case RH_GET_STATUS | RH_ENDPOINT:
- *(__u16 *) data_buf = m16_swap (0); OK (2);
- case RH_GET_STATUS | RH_CLASS:
- *(__u32 *) data_buf = m32_swap (
- RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
- OK (4);
- case RH_GET_STATUS | RH_OTHER | RH_CLASS:
- *(__u32 *) data_buf = m32_swap (RD_RH_PORTSTAT); OK (4);
-
- case RH_CLEAR_FEATURE | RH_ENDPOINT:
- switch (wValue) {
- case (RH_ENDPOINT_STALL): OK (0);
- }
- break;
-
- case RH_CLEAR_FEATURE | RH_CLASS:
- switch (wValue) {
- case RH_C_HUB_LOCAL_POWER:
- OK(0);
- case (RH_C_HUB_OVER_CURRENT):
- WR_RH_STAT(RH_HS_OCIC); OK (0);
- }
- break;
-
- case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
- switch (wValue) {
- case (RH_PORT_ENABLE):
- WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
- case (RH_PORT_SUSPEND):
- WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
- case (RH_PORT_POWER):
- WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
- case (RH_C_PORT_CONNECTION):
- WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
- case (RH_C_PORT_ENABLE):
- WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
- case (RH_C_PORT_SUSPEND):
- WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
- case (RH_C_PORT_OVER_CURRENT):
- WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
- case (RH_C_PORT_RESET):
- WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
- }
- break;
-
- case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
- switch (wValue) {
- case (RH_PORT_SUSPEND):
- WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
- case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
- if (RD_RH_PORTSTAT & RH_PS_CCS)
- WR_RH_PORTSTAT (RH_PS_PRS);
- OK (0);
- case (RH_PORT_POWER):
- WR_RH_PORTSTAT (RH_PS_PPS ); OK (0);
- case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
- if (RD_RH_PORTSTAT & RH_PS_CCS)
- WR_RH_PORTSTAT (RH_PS_PES );
- OK (0);
- }
- break;
-
- case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0);
-
- case RH_GET_DESCRIPTOR:
- switch ((wValue & 0xff00) >> 8) {
- case (0x01): /* device descriptor */
- len = min_t(unsigned int,
- leni,
- min_t(unsigned int,
- sizeof (root_hub_dev_des),
- wLength));
- data_buf = root_hub_dev_des; OK(len);
- case (0x02): /* configuration descriptor */
- len = min_t(unsigned int,
- leni,
- min_t(unsigned int,
- sizeof (root_hub_config_des),
- wLength));
- data_buf = root_hub_config_des; OK(len);
- case (0x03): /* string descriptors */
- if(wValue==0x0300) {
- len = min_t(unsigned int,
- leni,
- min_t(unsigned int,
- sizeof (root_hub_str_index0),
- wLength));
- data_buf = root_hub_str_index0;
- OK(len);
- }
- if(wValue==0x0301) {
- len = min_t(unsigned int,
- leni,
- min_t(unsigned int,
- sizeof (root_hub_str_index1),
- wLength));
- data_buf = root_hub_str_index1;
- OK(len);
- }
- default:
- stat = USB_ST_STALLED;
- }
- break;
-
- case RH_GET_DESCRIPTOR | RH_CLASS:
- {
- __u32 temp = roothub_a (&gohci);
-
- data_buf [0] = 9; /* min length; */
- data_buf [1] = 0x29;
- data_buf [2] = temp & RH_A_NDP;
- data_buf [3] = 0;
- if (temp & RH_A_PSM) /* per-port power switching? */
- data_buf [3] |= 0x1;
- if (temp & RH_A_NOCP) /* no overcurrent reporting? */
- data_buf [3] |= 0x10;
- else if (temp & RH_A_OCPM) /* per-port overcurrent reporting? */
- data_buf [3] |= 0x8;
-
- /* corresponds to data_buf[4-7] */
- datab [1] = 0;
- data_buf [5] = (temp & RH_A_POTPGT) >> 24;
- temp = roothub_b (&gohci);
- data_buf [7] = temp & RH_B_DR;
- if (data_buf [2] < 7) {
- data_buf [8] = 0xff;
- } else {
- data_buf [0] += 2;
- data_buf [8] = (temp & RH_B_DR) >> 8;
- data_buf [10] = data_buf [9] = 0xff;
- }
-
- len = min_t(unsigned int, leni,
- min_t(unsigned int, data_buf [0], wLength));
- OK (len);
- }
-
- case RH_GET_CONFIGURATION: *(__u8 *) data_buf = 0x01; OK (1);
-
- case RH_SET_CONFIGURATION: WR_RH_STAT (0x10000); OK (0);
-
- default:
- dbg ("unsupported root hub command");
- stat = USB_ST_STALLED;
- }
-
-#ifdef DEBUG
- ohci_dump_roothub (&gohci, 1);
-#else
- wait_ms(1);
-#endif
-
- len = min_t(int, len, leni);
- if (data != data_buf)
- memcpy (data, data_buf, len);
- dev->act_len = len;
- dev->status = stat;
-
-#ifdef DEBUG
- if (transfer_len)
- urb_priv.actual_length = transfer_len;
- pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
-#else
- wait_ms(1);
-#endif
-
- return stat;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* common code for handling submit messages - used for all but root hub */
-/* accesses. */
-int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
- int transfer_len, struct devrequest *setup, int interval)
-{
- int stat = 0;
- int maxsize = usb_maxpacket(dev, pipe);
- int timeout;
-
- /* device pulled? Shortcut the action. */
- if (devgone == dev) {
- dev->status = USB_ST_CRC_ERR;
- return 0;
- }
-
-#ifdef DEBUG
- urb_priv.actual_length = 0;
- pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
-#else
- wait_ms(1);
-#endif
- if (!maxsize) {
- err("submit_common_message: pipesize for pipe %lx is zero",
- pipe);
- return -1;
- }
-
- if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) < 0) {
- err("sohci_submit_job failed");
- return -1;
- }
-
- wait_ms(10);
- /* ohci_dump_status(&gohci); */
-
- /* allow more time for a BULK device to react - some are slow */
-#define BULK_TO 5000 /* timeout in milliseconds */
- if (usb_pipetype (pipe) == PIPE_BULK)
- timeout = BULK_TO;
- else
- timeout = 100;
-
- timeout *= 4;
- /* wait for it to complete */
- for (;;) {
- /* check whether the controller is done */
- stat = hc_interrupt();
- if (stat < 0) {
- stat = USB_ST_CRC_ERR;
- break;
- }
- if (stat >= 0 && stat != 0xff) {
- /* 0xff is returned for an SF-interrupt */
- break;
- }
- if (--timeout) {
- udelay(250); /* wait_ms(1); */
- } else {
- err("CTL:TIMEOUT ");
- stat = USB_ST_CRC_ERR;
- break;
- }
- }
- /* we got an Root Hub Status Change interrupt */
- if (got_rhsc) {
-#ifdef DEBUG
- ohci_dump_roothub (&gohci, 1);
-#endif
- got_rhsc = 0;
- /* abuse timeout */
- timeout = rh_check_port_status(&gohci);
- if (timeout >= 0) {
-#if 0 /* this does nothing useful, but leave it here in case that changes */
- /* the called routine adds 1 to the passed value */
- usb_hub_port_connect_change(gohci.rh.dev, timeout - 1);
-#endif
- /*
- * XXX
- * This is potentially dangerous because it assumes
- * that only one device is ever plugged in!
- */
- devgone = dev;
- }
- }
-
- dev->status = stat;
- dev->act_len = transfer_len;
-
-#ifdef DEBUG
- pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe));
-#else
- wait_ms(1);
-#endif
-
- /* free TDs in urb_priv */
- urb_free_priv (&urb_priv);
- return 0;
-}
-
-/* submit routines called from usb.c */
-int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
- int transfer_len)
-{
- info("submit_bulk_msg");
- return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
-}
-
-int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
- int transfer_len, struct devrequest *setup)
-{
- int maxsize = usb_maxpacket(dev, pipe);
-
- info("submit_control_msg");
-#ifdef DEBUG
- urb_priv.actual_length = 0;
- pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
-#else
- wait_ms(1);
-#endif
- if (!maxsize) {
- err("submit_control_message: pipesize for pipe %lx is zero",
- pipe);
- return -1;
- }
- if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
- gohci.rh.dev = dev;
- /* root hub - redirect */
- return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
- setup);
- }
-
- return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
-}
-
-int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
- int transfer_len, int interval)
-{
- info("submit_int_msg");
- return -1;
-}
-
-/*-------------------------------------------------------------------------*
- * HC functions
- *-------------------------------------------------------------------------*/
-
-/* reset the HC and BUS */
-
-static int hc_reset (ohci_t *ohci)
-{
- int timeout = 30;
- int smm_timeout = 50; /* 0,5 sec */
-
- if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
- writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
- info("USB HC TakeOver from SMM");
- while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
- wait_ms (10);
- if (--smm_timeout == 0) {
- err("USB HC TakeOver failed!");
- return -1;
- }
- }
- }
-
- /* Disable HC interrupts */
- writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
-
- dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;",
- ohci->slot_name,
- readl (&ohci->regs->control));
-
- /* Reset USB (needed by some controllers) */
- writel (0, &ohci->regs->control);
-
- /* HC Reset requires max 10 us delay */
- writel (OHCI_HCR, &ohci->regs->cmdstatus);
- while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
- if (--timeout == 0) {
- err("USB HC reset timed out!");
- return -1;
- }
- udelay (1);
- }
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* Start an OHCI controller, set the BUS operational
- * enable interrupts
- * connect the virtual root hub */
-
-static int hc_start (ohci_t * ohci)
-{
- __u32 mask;
- unsigned int fminterval;
-
- ohci->disabled = 1;
-
- /* Tell the controller where the control and bulk lists are
- * The lists are empty now. */
-
- writel (0, &ohci->regs->ed_controlhead);
- writel (0, &ohci->regs->ed_bulkhead);
-
- writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */
-
- fminterval = 0x2edf;
- writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
- fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
- writel (fminterval, &ohci->regs->fminterval);
- writel (0x628, &ohci->regs->lsthresh);
-
- /* start controller operations */
- ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
- ohci->disabled = 0;
- writel (ohci->hc_control, &ohci->regs->control);
-
- /* disable all interrupts */
- mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
- OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
- OHCI_INTR_OC | OHCI_INTR_MIE);
- writel (mask, &ohci->regs->intrdisable);
- /* clear all interrupts */
- mask &= ~OHCI_INTR_MIE;
- writel (mask, &ohci->regs->intrstatus);
- /* Choose the interrupts we care about now - but w/o MIE */
- mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
- writel (mask, &ohci->regs->intrenable);
-
-#ifdef OHCI_USE_NPS
- /* required for AMD-756 and some Mac platforms */
- writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
- &ohci->regs->roothub.a);
- writel (RH_HS_LPSC, &ohci->regs->roothub.status);
-#endif /* OHCI_USE_NPS */
-
-#define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
- /* POTPGT delay is bits 24-31, in 2 ms units. */
- mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
-
- /* connect the virtual root hub */
- ohci->rh.devnum = 0;
-
- return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* an interrupt happens */
-
-static int
-hc_interrupt (void)
-{
- ohci_t *ohci = &gohci;
- struct ohci_regs *regs = ohci->regs;
- int ints;
- int stat = -1;
-
- if ((ohci->hcca->done_head != 0) && !(m32_swap (ohci->hcca->done_head) & 0x01)) {
- ints = OHCI_INTR_WDH;
- } else {
- ints = readl (®s->intrstatus);
- }
-
- /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
-
- if (ints & OHCI_INTR_RHSC) {
- got_rhsc = 1;
- }
-
- if (ints & OHCI_INTR_UE) {
- ohci->disabled++;
- err ("OHCI Unrecoverable Error, controller usb-%s disabled",
- ohci->slot_name);
- /* e.g. due to PCI Master/Target Abort */
-
-#ifdef DEBUG
- ohci_dump (ohci, 1);
-#else
- wait_ms(1);
-#endif
- /* FIXME: be optimistic, hope that bug won't repeat often. */
- /* Make some non-interrupt context restart the controller. */
- /* Count and limit the retries though; either hardware or */
- /* software errors can go forever... */
- hc_reset (ohci);
- return -1;
- }
-
- if (ints & OHCI_INTR_WDH) {
- wait_ms(1);
- writel (OHCI_INTR_WDH, ®s->intrdisable);
- stat = dl_done_list (&gohci, dl_reverse_done_list (&gohci));
- writel (OHCI_INTR_WDH, ®s->intrenable);
- }
-
- if (ints & OHCI_INTR_SO) {
- dbg("USB Schedule overrun\n");
- writel (OHCI_INTR_SO, ®s->intrenable);
- stat = -1;
- }
-
- /* FIXME: this assumes SOF (1/ms) interrupts don't get lost... */
- if (ints & OHCI_INTR_SF) {
- unsigned int frame = m16_swap (ohci->hcca->frame_no) & 1;
- wait_ms(1);
- writel (OHCI_INTR_SF, ®s->intrdisable);
- if (ohci->ed_rm_list[frame] != NULL)
- writel (OHCI_INTR_SF, ®s->intrenable);
- stat = 0xff;
- }
-
- writel (ints, ®s->intrstatus);
- return stat;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*-------------------------------------------------------------------------*/
-
-/* De-allocate all resources.. */
-
-static void hc_release_ohci (ohci_t *ohci)
-{
- dbg ("USB HC release ohci usb-%s", ohci->slot_name);
-
- if (!ohci->disabled)
- hc_reset (ohci);
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define __read_32bit_c0_register(source, sel) \
-({ int __res; \
- if (sel == 0) \
- __asm__ __volatile__( \
- "mfc0\t%0, " #source "\n\t" \
- : "=r" (__res)); \
- else \
- __asm__ __volatile__( \
- ".set\tmips32\n\t" \
- "mfc0\t%0, " #source ", " #sel "\n\t" \
- ".set\tmips0\n\t" \
- : "=r" (__res)); \
- __res; \
-})
-
-#define read_c0_prid() __read_32bit_c0_register($15, 0)
-
-/*
- * low level initalisation routine, called from usb.c
- */
-static char ohci_inited = 0;
-
-int usb_lowlevel_init(void)
-{
- u32 pin_func;
- u32 sys_freqctrl, sys_clksrc;
- u32 prid = read_c0_prid();
-
- dbg("in usb_lowlevel_init\n");
-
- /* zero and disable FREQ2 */
- sys_freqctrl = au_readl(SYS_FREQCTRL0);
- sys_freqctrl &= ~0xFFF00000;
- au_writel(sys_freqctrl, SYS_FREQCTRL0);
-
- /* zero and disable USBH/USBD clocks */
- sys_clksrc = au_readl(SYS_CLKSRC);
- sys_clksrc &= ~0x00007FE0;
- au_writel(sys_clksrc, SYS_CLKSRC);
-
- sys_freqctrl = au_readl(SYS_FREQCTRL0);
- sys_freqctrl &= ~0xFFF00000;
-
- sys_clksrc = au_readl(SYS_CLKSRC);
- sys_clksrc &= ~0x00007FE0;
-
- switch (prid & 0x000000FF) {
- case 0x00: /* DA */
- case 0x01: /* HA */
- case 0x02: /* HB */
- /* CPU core freq to 48MHz to slow it way down... */
- au_writel(4, SYS_CPUPLL);
-
- /*
- * Setup 48MHz FREQ2 from CPUPLL for USB Host
- */
- /* FRDIV2=3 -> div by 8 of 384MHz -> 48MHz */
- sys_freqctrl |= ((3<<22) | (1<<21) | (0<<20));
- au_writel(sys_freqctrl, SYS_FREQCTRL0);
-
- /* CPU core freq to 384MHz */
- au_writel(0x20, SYS_CPUPLL);
-
- printf("Au1000: 48MHz OHCI workaround enabled\n");
- break;
-
- default: /* HC and newer */
- /* FREQ2 = aux/2 = 48 MHz */
- sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20));
- au_writel(sys_freqctrl, SYS_FREQCTRL0);
- break;
- }
-
- /*
- * Route 48MHz FREQ2 into USB Host and/or Device
- */
- sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
- au_writel(sys_clksrc, SYS_CLKSRC);
-
- /* configure pins GPIO[14:9] as GPIO */
- pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8080);
-
- au_writel(pin_func, SYS_PINFUNC);
- au_writel(0x2800, SYS_TRIOUTCLR);
- au_writel(0x0030, SYS_OUTPUTCLR);
-
- dbg("OHCI board setup complete\n");
-
- /* enable host controller */
- au_writel(USBH_ENABLE_CE, USB_HOST_CONFIG);
- udelay(1000);
- au_writel(USBH_ENABLE_INIT, USB_HOST_CONFIG);
- udelay(1000);
-
- /* wait for reset complete (read register twice; see au1500 errata) */
- while (au_readl(USB_HOST_CONFIG),
- !(au_readl(USB_HOST_CONFIG) & USBH_ENABLE_RD))
- udelay(1000);
-
- dbg("OHCI clock running\n");
-
- memset (&gohci, 0, sizeof (ohci_t));
- memset (&urb_priv, 0, sizeof (urb_priv_t));
-
- /* align the storage */
- if ((__u32)&ghcca[0] & 0xff) {
- err("HCCA not aligned!!");
- return -1;
- }
- phcca = &ghcca[0];
- info("aligned ghcca %p", phcca);
- memset(&ohci_dev, 0, sizeof(struct ohci_device));
- if ((__u32)&ohci_dev.ed[0] & 0x7) {
- err("EDs not aligned!!");
- return -1;
- }
- memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
- if ((__u32)gtd & 0x7) {
- err("TDs not aligned!!");
- return -1;
- }
- ptd = gtd;
- gohci.hcca = phcca;
- memset (phcca, 0, sizeof (struct ohci_hcca));
-
- gohci.disabled = 1;
- gohci.sleeping = 0;
- gohci.irq = -1;
- gohci.regs = (struct ohci_regs *)(USB_OHCI_BASE | 0xA0000000);
-
- gohci.flags = 0;
- gohci.slot_name = "au1x00";
-
- dbg("OHCI revision: 0x%08x\n"
- " RH: a: 0x%08x b: 0x%08x\n",
- readl(&gohci.regs->revision),
- readl(&gohci.regs->roothub.a), readl(&gohci.regs->roothub.b));
-
- if (hc_reset (&gohci) < 0)
- goto errout;
-
- /* FIXME this is a second HC reset; why?? */
- writel (gohci.hc_control = OHCI_USB_RESET, &gohci.regs->control);
- wait_ms (10);
-
- if (hc_start (&gohci) < 0)
- goto errout;
-
-#ifdef DEBUG
- ohci_dump (&gohci, 1);
-#else
- wait_ms(1);
-#endif
- ohci_inited = 1;
- return 0;
-
- errout:
- err("OHCI initialization error\n");
- hc_release_ohci (&gohci);
- /* Initialization failed */
- au_writel(readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
- return -1;
-}
-
-int usb_lowlevel_stop(void)
-{
- /* this gets called really early - before the controller has */
- /* even been initialized! */
- if (!ohci_inited)
- return 0;
- /* TODO release any interrupts, etc. */
- /* call hc_release_ohci() here ? */
- hc_reset (&gohci);
- /* may not want to do this */
- /* Disable clock */
- au_writel(readl(USB_HOST_CONFIG) & ~USBH_ENABLE_CE, USB_HOST_CONFIG);
- return 0;
-}
-
-#endif /* CONFIG_USB_OHCI */
projects / openwrt / openwrt.git / blobdiff