+++ /dev/null
-/*
- * URB OHCI HCD (Host Controller Driver) for USB on the S3C2400.
- *
- * (C) Copyright 2003
- * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
- *
- * Note: Much of this code has been derived from Linux 2.4
- * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
- * (C) Copyright 2000-2002 David Brownell
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-/*
- * IMPORTANT NOTES
- * 1 - this driver is intended for use with USB Mass Storage Devices
- * (BBB) ONLY. There is NO support for Interrupt or Isochronous pipes!
- */
-
-#include <common.h>
-/* #include <pci.h> no PCI on the S3C24X0 */
-
-#if defined(CONFIG_USB_OHCI) && defined(CONFIG_S3C24X0)
-
-#include <asm/arch/s3c24x0_cpu.h>
-#include <asm/io.h>
-#include <malloc.h>
-#include <usb.h>
-#include "ohci-s3c24xx.h"
-
-#define OHCI_USE_NPS /* force NoPowerSwitching mode */
-#undef OHCI_VERBOSE_DEBUG /* not always helpful */
-
-
-/* For initializing controller (mask in an HCFS mode too) */
-#define OHCI_CONTROL_INIT \
- (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
-
-#undef 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)
-#undef 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 struct ohci */
-static struct ohci 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 */
-struct urb_priv urb_priv;
-/* RHSC flag */
-int got_rhsc;
-/* device which was disconnected */
-struct usb_device *devgone;
-/* flag guarding URB transation */
-int urb_finished = 0;
-
-/*-------------------------------------------------------------------------*/
-
-/* 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, struct urb_priv *urb,
- int interval);
-
-/*-------------------------------------------------------------------------*
- * URB support functions
- *-------------------------------------------------------------------------*/
-
-/* free HCD-private data associated with this URB */
-
-static void urb_free_priv(struct urb_priv *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)
-{
- struct urb_priv *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(struct ohci *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--) {
- struct ed *ed = (struct ed *) 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)
-{
- struct ed *edp = (struct ed *) 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(struct ohci *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(struct ohci *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(struct ohci *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)
-{
- struct ohci *ohci;
- struct ed *ed;
- struct urb_priv *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;
- }
-
- /* if we have an unfinished URB from previous transaction let's
- * fail and scream as quickly as possible so as not to corrupt
- * further communication */
- if (!urb_finished) {
- err("sohci_submit_job: URB NOT FINISHED");
- return -1;
- }
- /* we're about to begin a new transaction here
- so mark the URB unfinished */
- urb_finished = 0;
-
- /* every endpoint has a ed, locate and fill it */
- ed = ep_add_ed(dev, pipe);
- if (!ed) {
- 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)
-{
- struct ohci *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(struct ohci *ohci, struct ed *edi)
-{
- struct ed *ed = edi;
-
- ed->state = ED_OPER;
-
- switch (ed->type) {
- case PIPE_CONTROL:
- ed->hwNextED = 0;
- if (ohci->ed_controltail == NULL) {
- writel((u32)ed, &ohci->regs->ed_controlhead);
- } else {
- ohci->ed_controltail->hwNextED = (__u32) 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((u32)ed, &ohci->regs->ed_bulkhead);
- } else {
- ohci->ed_bulktail->hwNextED = (__u32) 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(struct ohci *ohci, struct ed *ed)
-{
- struct ed *next;
- 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 {
- next = (struct ed *)m32_swap(*((__u32 *)&ed->hwNextED));
- next->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 {
- next = (struct ed *)m32_swap(*((__u32 *)&ed->hwNextED));
- next->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 struct ed *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe)
-{
- struct td *td;
- struct ed *ed_ret;
- struct ed *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 = (__u32) 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_dev->speed == USB_SPEED_LOW) << 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(struct ohci *ohci, unsigned int info, void *data, int len,
- struct usb_device *dev, int index,
- struct urb_priv *urb_priv)
-{
- struct td *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] =
- (struct td *) (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 (usb_pipebulk(urb_priv->pipe) && usb_pipeout(urb_priv->pipe)) {
- for (i = 0; i < len; i++)
- printf("td->data[%d] %#2x ", i,
- ((unsigned char *)td->data)[i]);
- printf("\n");
- }
-#endif
- if (!len)
- data = 0;
-
- td->hwINFO = (__u32) m32_swap(info);
- td->hwCBP = (__u32) m32_swap(data);
- if (data)
- td->hwBE = (__u32) m32_swap(data + len - 1);
- else
- td->hwBE = 0;
- td->hwNextTD = (__u32) m32_swap(td_pt);
-
- /* append to queue */
- td->ed->hwTailP = td->hwNextTD;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* prepare all TDs of a transfer */
-
-static void td_submit_job(struct usb_device *dev, unsigned long pipe,
- void *buffer, int transfer_len,
- struct devrequest *setup, struct urb_priv *urb,
- int interval)
-{
- struct ohci *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 resetting */
- 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 = 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)
- /* start bulk list */
- writel(OHCI_BLF, &ohci->regs->cmdstatus);
- break;
-
- case PIPE_CONTROL:
- info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
- td_fill(ohci, info, 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)
- /* start Control list */
- writel(OHCI_CLF, &ohci->regs->cmdstatus);
- 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(struct td *td)
-{
- __u32 tdBE, tdCBP;
- struct urb_priv *lurb_priv = &urb_priv;
-
- tdBE = m32_swap(td->hwBE);
- tdCBP = m32_swap(td->hwCBP);
-
- if (!(usb_pipecontrol(lurb_priv->pipe) &&
- ((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 struct td *dl_reverse_done_list(struct ohci *ohci)
-{
- __u32 td_list_hc;
- __u32 tmp;
- struct td *td_rev = NULL;
- struct td *td_list = NULL;
- struct urb_priv *lurb_priv = NULL;
-
- td_list_hc = m32_swap(ohci->hcca->done_head) & 0xfffffff0;
- ohci->hcca->done_head = 0;
-
- while (td_list_hc) {
- td_list = (struct td *) 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)) {
- tmp = lurb_priv->length - 1;
- td_list->ed->hwHeadP =
- (lurb_priv->td[tmp]->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(struct ohci *ohci, struct td *td_list)
-{
- struct td *td_list_next = NULL;
- struct ed *ed;
- int cc = 0;
- int stat = 0;
- /* urb_t *urb; */
- struct urb_priv *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];
- }
-
- /* see if this done list makes for all TD's of current URB,
- * and mark the URB finished if so */
- if (++(lurb_priv->td_cnt) == lurb_priv->length) {
- if ((ed->state & (ED_OPER | ED_UNLINK)))
- urb_finished = 1;
- else
- dbg("dl_done_list: strange.., ED state %x, "
- "ed->state\n");
- } else
- dbg("dl_done_list: processing TD %x, len %x\n",
- lurb_priv->td_cnt, lurb_priv->length);
-
- 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
- *-------------------------------------------------------------------------*/
-
-#include <usbroothubdes.h>
-
-/* 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(struct ohci *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;
- union {
- __u32 word[4];
- __u16 hword[8];
- __u8 byte[16];
- } datab;
- __u8 *data_buf = datab.byte;
- __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
- mdelay(1);
-#endif
- if (usb_pipeint(pipe)) {
- 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:
- datab.hword[0] = m16_swap(1);
- OK(2);
- case RH_GET_STATUS | RH_INTERFACE:
- datab.hword[0] = m16_swap(0);
- OK(2);
- case RH_GET_STATUS | RH_ENDPOINT:
- datab.hword[0] = m16_swap(0);
- OK(2);
- case RH_GET_STATUS | RH_CLASS:
- datab.word[0] =
- m32_swap(RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
- OK(4);
- case RH_GET_STATUS | RH_OTHER | RH_CLASS:
- datab.word[0] = 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.word[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
- mdelay(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
- mdelay(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
- mdelay(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;
- }
-
- mdelay(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_pipebulk(pipe))
- timeout = BULK_TO;
- else
- timeout = 100;
-
- /* wait for it to complete */
- for (;;) {
- /* check whether the controller is done */
- stat = hc_interrupt();
-
- if (stat < 0) {
- stat = USB_ST_CRC_ERR;
- break;
- }
-
- /* NOTE: since we are not interrupt driven in U-Boot and always
- * handle only one URB at a time, we cannot assume the
- * transaction finished on the first successful return from
- * hc_interrupt().. unless the flag for current URB is set,
- * meaning that all TD's to/from device got actually
- * transferred and processed. If the current URB is not
- * finished we need to re-iterate this loop so as
- * hc_interrupt() gets called again as there needs to be some
- * more TD's to process still */
- if ((stat >= 0) && (stat != 0xff) && (urb_finished)) {
- /* 0xff is returned for an SF-interrupt */
- break;
- }
-
- if (--timeout) {
- mdelay(1);
- if (!urb_finished)
- dbg("\%");
-
- } else {
- err("CTL:TIMEOUT ");
- dbg("submit_common_msg: TO status %x\n", stat);
- stat = USB_ST_CRC_ERR;
- urb_finished = 1;
- break;
- }
- }
-
-#if 0
- /* 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;
- }
- }
-#endif
-
- dev->status = stat;
- dev->act_len = transfer_len;
-
-#ifdef DEBUG
- pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)",
- usb_pipein(pipe));
-#else
- mdelay(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
- mdelay(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(struct ohci *ohci)
-{
- int timeout = 30;
- int smm_timeout = 50; /* 0,5 sec */
-
- if (readl(&ohci->regs->control) & OHCI_CTRL_IR) {
- /* SMM owns the HC - request ownership */
- writel(OHCI_OCR, &ohci->regs->cmdstatus);
- info("USB HC TakeOver from SMM");
- while (readl(&ohci->regs->control) & OHCI_CTRL_IR) {
- mdelay(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(struct ohci *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);
-
- /* a reset clears this */
- writel((__u32) ohci->hcca, &ohci->regs->hcca);
-
- 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 */
-
- /* 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)
-{
- struct ohci *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);
- if (ints == ~(u32) 0) {
- ohci->disabled++;
- err("%s device removed!", ohci->slot_name);
- return -1;
- }
- ints &= readl(®s->intrenable);
- if (ints == 0) {
- dbg("hc_interrupt: returning..\n");
- return 0xff;
- }
- }
-
- /* dbg("Interrupt: %x frame: %x", ints,
- le16_to_cpu(ohci->hcca->frame_no)); */
-
- if (ints & OHCI_INTR_RHSC) {
- got_rhsc = 1;
- stat = 0xff;
- }
-
- 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
- mdelay(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) {
- mdelay(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;
- mdelay(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(struct ohci *ohci)
-{
- dbg("USB HC release ohci usb-%s", ohci->slot_name);
-
- if (!ohci->disabled)
- hc_reset(ohci);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * low level initalisation routine, called from usb.c
- */
-static char ohci_inited = 0;
-
-int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
-{
- struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
- struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
-
- /*
- * Set the 48 MHz UPLL clocking. Values are taken from
- * "PLL value selection guide", 6-23, s3c2400_UM.pdf.
- */
- clk_power->upllcon = ((40 << 12) + (1 << 4) + 2);
- gpio->misccr |= 0x8; /* 1 = use pads related USB for USB host */
-
- /*
- * Enable USB host clock.
- */
- clk_power->clkcon |= (1 << 4);
-
- memset(&gohci, 0, sizeof(struct ohci));
- memset(&urb_priv, 0, sizeof(struct urb_priv));
-
- /* 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(struct td) * (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 *)S3C24X0_USB_HOST_BASE;
-
- gohci.flags = 0;
- gohci.slot_name = "s3c2400";
-
- if (hc_reset(&gohci) < 0) {
- hc_release_ohci(&gohci);
- /* Initialization failed */
- clk_power->clkcon &= ~(1 << 4);
- return -1;
- }
-
- /* FIXME this is a second HC reset; why?? */
- gohci.hc_control = OHCI_USB_RESET;
- writel(gohci.hc_control, &gohci.regs->control);
- mdelay(10);
-
- if (hc_start(&gohci) < 0) {
- err("can't start usb-%s", gohci.slot_name);
- hc_release_ohci(&gohci);
- /* Initialization failed */
- clk_power->clkcon &= ~(1 << 4);
- return -1;
- }
-#ifdef DEBUG
- ohci_dump(&gohci, 1);
-#else
- mdelay(1);
-#endif
- ohci_inited = 1;
- urb_finished = 1;
-
- return 0;
-}
-
-int usb_lowlevel_stop(int index)
-{
- struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
-
- /* 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 */
- clk_power->clkcon &= ~(1 << 4);
- return 0;
-}
-
-#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_S3C24X0) */
-
-#if defined(CONFIG_USB_OHCI_NEW) && \
- defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
- defined(CONFIG_S3C24X0)
-
-int usb_cpu_init(void)
-{
- struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
- struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
-
- /*
- * Set the 48 MHz UPLL clocking. Values are taken from
- * "PLL value selection guide", 6-23, s3c2400_UM.pdf.
- */
- writel((40 << 12) + (1 << 4) + 2, &clk_power->upllcon);
- /* 1 = use pads related USB for USB host */
- writel(readl(&gpio->misccr) | 0x8, &gpio->misccr);
-
- /*
- * Enable USB host clock.
- */
- writel(readl(&clk_power->clkcon) | (1 << 4), &clk_power->clkcon);
-
- return 0;
-}
-
-int usb_cpu_stop(void)
-{
- struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
- /* may not want to do this */
- writel(readl(&clk_power->clkcon) & ~(1 << 4), &clk_power->clkcon);
- return 0;
-}
-
-int usb_cpu_init_fail(void)
-{
- struct s3c24x0_clock_power *clk_power = s3c24x0_get_base_clock_power();
- writel(readl(&clk_power->clkcon) & ~(1 << 4), &clk_power->clkcon);
- return 0;
-}
-
-#endif /* defined(CONFIG_USB_OHCI_NEW) && \
- defined(CONFIG_SYS_USB_OHCI_CPU_INIT) && \
- defined(CONFIG_S3C24X0) */
+++ /dev/null
-/*
- * URB OHCI HCD (Host Controller Driver) for USB.
- *
- * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
- * (C) Copyright 2000-2001 David Brownell <dbrownell@users.sourceforge.net>
- *
- * usb-ohci.h
- */
-
-
-static int cc_to_error[16] = {
-
-/* mapping of the OHCI CC status to error codes */
- /* No Error */ 0,
- /* CRC Error */ USB_ST_CRC_ERR,
- /* Bit Stuff */ USB_ST_BIT_ERR,
- /* Data Togg */ USB_ST_CRC_ERR,
- /* Stall */ USB_ST_STALLED,
- /* DevNotResp */ -1,
- /* PIDCheck */ USB_ST_BIT_ERR,
- /* UnExpPID */ USB_ST_BIT_ERR,
- /* DataOver */ USB_ST_BUF_ERR,
- /* DataUnder */ USB_ST_BUF_ERR,
- /* reservd */ -1,
- /* reservd */ -1,
- /* BufferOver */ USB_ST_BUF_ERR,
- /* BuffUnder */ USB_ST_BUF_ERR,
- /* Not Access */ -1,
- /* Not Access */ -1
-};
-
-/* ED States */
-#define ED_NEW 0x00
-#define ED_UNLINK 0x01
-#define ED_OPER 0x02
-#define ED_DEL 0x04
-#define ED_URB_DEL 0x08
-
-/* usb_ohci_ed */
-struct ed {
- __u32 hwINFO;
- __u32 hwTailP;
- __u32 hwHeadP;
- __u32 hwNextED;
-
- struct ed *ed_prev;
- __u8 int_period;
- __u8 int_branch;
- __u8 int_load;
- __u8 int_interval;
- __u8 state;
- __u8 type;
- __u16 last_iso;
- struct ed *ed_rm_list;
-
- struct usb_device *usb_dev;
- __u32 unused[3];
-} __attribute__ ((aligned(16)));
-
-/* TD info field */
-#define TD_CC 0xf0000000
-#define TD_CC_GET(td_p) (((td_p) >> 28) & 0x0f)
-#define TD_CC_SET(td_p, cc) \
- {(td_p) = ((td_p) & 0x0fffffff) | (((cc) & 0x0f) << 28)}
-#define TD_EC 0x0C000000
-#define TD_T 0x03000000
-#define TD_T_DATA0 0x02000000
-#define TD_T_DATA1 0x03000000
-#define TD_T_TOGGLE 0x00000000
-#define TD_R 0x00040000
-#define TD_DI 0x00E00000
-#define TD_DI_SET(X) (((X) & 0x07)<< 21)
-#define TD_DP 0x00180000
-#define TD_DP_SETUP 0x00000000
-#define TD_DP_IN 0x00100000
-#define TD_DP_OUT 0x00080000
-
-#define TD_ISO 0x00010000
-#define TD_DEL 0x00020000
-
-/* CC Codes */
-#define TD_CC_NOERROR 0x00
-#define TD_CC_CRC 0x01
-#define TD_CC_BITSTUFFING 0x02
-#define TD_CC_DATATOGGLEM 0x03
-#define TD_CC_STALL 0x04
-#define TD_DEVNOTRESP 0x05
-#define TD_PIDCHECKFAIL 0x06
-#define TD_UNEXPECTEDPID 0x07
-#define TD_DATAOVERRUN 0x08
-#define TD_DATAUNDERRUN 0x09
-#define TD_BUFFEROVERRUN 0x0C
-#define TD_BUFFERUNDERRUN 0x0D
-#define TD_NOTACCESSED 0x0F
-
-
-#define MAXPSW 1
-
-struct td {
- __u32 hwINFO;
- __u32 hwCBP; /* Current Buffer Pointer */
- __u32 hwNextTD; /* Next TD Pointer */
- __u32 hwBE; /* Memory Buffer End Pointer */
-
- __u8 unused;
- __u8 index;
- struct ed *ed;
- struct td *next_dl_td;
- struct usb_device *usb_dev;
- int transfer_len;
- __u32 data;
-
- __u32 unused2[2];
-} __attribute__ ((aligned(32)));
-
-#define OHCI_ED_SKIP (1 << 14)
-
-/*
- * The HCCA (Host Controller Communications Area) is a 256 byte
- * structure defined in the OHCI spec. that the host controller is
- * told the base address of. It must be 256-byte aligned.
- */
-
-#define NUM_INTS 32 /* part of the OHCI standard */
-struct ohci_hcca {
- __u32 int_table[NUM_INTS]; /* Interrupt ED table */
- __u16 frame_no; /* current frame number */
- __u16 pad1; /* set to 0 on each frame_no change */
- __u32 done_head; /* info returned for an interrupt */
- u8 reserved_for_hc[116];
-} __attribute__ ((aligned(256)));
-
-/*
- * Maximum number of root hub ports.
- */
-#define MAX_ROOT_PORTS 15 /* maximum OHCI root hub ports */
-
-/*
- * This is the structure of the OHCI controller's memory mapped I/O
- * region. This is Memory Mapped I/O. You must use the readl() and
- * writel() macros defined in asm/io.h to access these!!
- */
-struct ohci_regs {
- /* control and status registers */
- __u32 revision;
- __u32 control;
- __u32 cmdstatus;
- __u32 intrstatus;
- __u32 intrenable;
- __u32 intrdisable;
- /* memory pointers */
- __u32 hcca;
- __u32 ed_periodcurrent;
- __u32 ed_controlhead;
- __u32 ed_controlcurrent;
- __u32 ed_bulkhead;
- __u32 ed_bulkcurrent;
- __u32 donehead;
- /* frame counters */
- __u32 fminterval;
- __u32 fmremaining;
- __u32 fmnumber;
- __u32 periodicstart;
- __u32 lsthresh;
- /* Root hub ports */
- struct ohci_roothub_regs {
- __u32 a;
- __u32 b;
- __u32 status;
- __u32 portstatus[MAX_ROOT_PORTS];
- } roothub;
-} __attribute__ ((aligned(32)));
-
-/* OHCI CONTROL AND STATUS REGISTER MASKS */
-
-/*
- * HcControl (control) register masks
- */
-#define OHCI_CTRL_CBSR (3 << 0) /* control/bulk service ratio */
-#define OHCI_CTRL_PLE (1 << 2) /* periodic list enable */
-#define OHCI_CTRL_IE (1 << 3) /* isochronous enable */
-#define OHCI_CTRL_CLE (1 << 4) /* control list enable */
-#define OHCI_CTRL_BLE (1 << 5) /* bulk list enable */
-#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
-#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */
-#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
-#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
-
-/* pre-shifted values for HCFS */
-# define OHCI_USB_RESET (0 << 6)
-# define OHCI_USB_RESUME (1 << 6)
-# define OHCI_USB_OPER (2 << 6)
-# define OHCI_USB_SUSPEND (3 << 6)
-
-/*
- * HcCommandStatus (cmdstatus) register masks
- */
-#define OHCI_HCR (1 << 0) /* host controller reset */
-#define OHCI_CLF (1 << 1) /* control list filled */
-#define OHCI_BLF (1 << 2) /* bulk list filled */
-#define OHCI_OCR (1 << 3) /* ownership change request */
-#define OHCI_SOC (3 << 16) /* scheduling overrun count */
-
-/*
- * masks used with interrupt registers:
- * HcInterruptStatus (intrstatus)
- * HcInterruptEnable (intrenable)
- * HcInterruptDisable (intrdisable)
- */
-#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
-#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
-#define OHCI_INTR_SF (1 << 2) /* start frame */
-#define OHCI_INTR_RD (1 << 3) /* resume detect */
-#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
-#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
-#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
-#define OHCI_INTR_OC (1 << 30) /* ownership change */
-#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
-
-/* Virtual Root HUB */
-struct virt_root_hub {
- int devnum; /* Address of Root Hub endpoint */
- void *dev; /* was urb */
- void *int_addr;
- int send;
- int interval;
-};
-
-/* USB HUB CONSTANTS (not OHCI-specific; see hub.h) */
-
-/* destination of request */
-#define RH_INTERFACE 0x01
-#define RH_ENDPOINT 0x02
-#define RH_OTHER 0x03
-
-#define RH_CLASS 0x20
-#define RH_VENDOR 0x40
-
-/* Requests: bRequest << 8 | bmRequestType */
-#define RH_GET_STATUS 0x0080
-#define RH_CLEAR_FEATURE 0x0100
-#define RH_SET_FEATURE 0x0300
-#define RH_SET_ADDRESS 0x0500
-#define RH_GET_DESCRIPTOR 0x0680
-#define RH_SET_DESCRIPTOR 0x0700
-#define RH_GET_CONFIGURATION 0x0880
-#define RH_SET_CONFIGURATION 0x0900
-#define RH_GET_STATE 0x0280
-#define RH_GET_INTERFACE 0x0A80
-#define RH_SET_INTERFACE 0x0B00
-#define RH_SYNC_FRAME 0x0C80
-/* Our Vendor Specific Request */
-#define RH_SET_EP 0x2000
-
-
-/* Hub port features */
-#define RH_PORT_CONNECTION 0x00
-#define RH_PORT_ENABLE 0x01
-#define RH_PORT_SUSPEND 0x02
-#define RH_PORT_OVER_CURRENT 0x03
-#define RH_PORT_RESET 0x04
-#define RH_PORT_POWER 0x08
-#define RH_PORT_LOW_SPEED 0x09
-
-#define RH_C_PORT_CONNECTION 0x10
-#define RH_C_PORT_ENABLE 0x11
-#define RH_C_PORT_SUSPEND 0x12
-#define RH_C_PORT_OVER_CURRENT 0x13
-#define RH_C_PORT_RESET 0x14
-
-/* Hub features */
-#define RH_C_HUB_LOCAL_POWER 0x00
-#define RH_C_HUB_OVER_CURRENT 0x01
-
-#define RH_DEVICE_REMOTE_WAKEUP 0x00
-#define RH_ENDPOINT_STALL 0x01
-
-#define RH_ACK 0x01
-#define RH_REQ_ERR -1
-#define RH_NACK 0x00
-
-
-/* OHCI ROOT HUB REGISTER MASKS */
-
-/* roothub.portstatus [i] bits */
-#define RH_PS_CCS 0x00000001 /* current connect status */
-#define RH_PS_PES 0x00000002 /* port enable status */
-#define RH_PS_PSS 0x00000004 /* port suspend status */
-#define RH_PS_POCI 0x00000008 /* port over current indicator */
-#define RH_PS_PRS 0x00000010 /* port reset status */
-#define RH_PS_PPS 0x00000100 /* port power status */
-#define RH_PS_LSDA 0x00000200 /* low speed device attached */
-#define RH_PS_CSC 0x00010000 /* connect status change */
-#define RH_PS_PESC 0x00020000 /* port enable status change */
-#define RH_PS_PSSC 0x00040000 /* port suspend status change */
-#define RH_PS_OCIC 0x00080000 /* over current indicator change */
-#define RH_PS_PRSC 0x00100000 /* port reset status change */
-
-/* roothub.status bits */
-#define RH_HS_LPS 0x00000001 /* local power status */
-#define RH_HS_OCI 0x00000002 /* over current indicator */
-#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
-#define RH_HS_LPSC 0x00010000 /* local power status change */
-#define RH_HS_OCIC 0x00020000 /* over current indicator change */
-#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
-
-/* roothub.b masks */
-#define RH_B_DR 0x0000ffff /* device removable flags */
-#define RH_B_PPCM 0xffff0000 /* port power control mask */
-
-/* roothub.a masks */
-#define RH_A_NDP (0xff << 0) /* number of downstream ports */
-#define RH_A_PSM (1 << 8) /* power switching mode */
-#define RH_A_NPS (1 << 9) /* no power switching */
-#define RH_A_DT (1 << 10) /* device type (mbz) */
-#define RH_A_OCPM (1 << 11) /* over current protection mode */
-#define RH_A_NOCP (1 << 12) /* no over current protection */
-#define RH_A_POTPGT (0xff << 24) /* power on to power good time */
-
-/* urb */
-#define N_URB_TD 48
-struct urb_priv {
- struct ed *ed;
- __u16 length; /* number of tds associated with this request */
- __u16 td_cnt; /* number of tds already serviced */
- int state;
- unsigned long pipe;
- int actual_length;
- struct td *td[N_URB_TD]; /* list pointer to all corresponding TDs
- associated with this request */
-};
-#define URB_DEL 1
-
-/*
- * This is the full ohci controller description
- *
- * Note how the "proper" USB information is just
- * a subset of what the full implementation needs. (Linus)
- */
-
-
-struct ohci {
- struct ohci_hcca *hcca; /* hcca */
- /*dma_addr_t hcca_dma; */
-
- int irq;
- int disabled; /* e.g. got a UE, we're hung */
- int sleeping;
- unsigned long flags; /* for HC bugs */
-
- struct ohci_regs *regs; /* OHCI controller's memory */
-
- struct ed *ed_rm_list[2]; /* lists of all endpoints to be removed */
- struct ed *ed_bulktail; /* last endpoint of bulk list */
- struct ed *ed_controltail; /* last endpoint of control list */
- int intrstatus;
- __u32 hc_control; /* copy of the hc control reg */
- struct usb_device *dev[32];
- struct virt_root_hub rh;
-
- const char *slot_name;
-};
-
-#define NUM_EDS 8 /* num of preallocated endpoint descriptors */
-
-struct ohci_device {
- struct ed ed[NUM_EDS];
- int ed_cnt;
-};
-
-/* hcd */
-/* endpoint */
-static int ep_link(struct ohci *ohci, struct ed *ed);
-static int ep_unlink(struct ohci *ohci, struct ed *ed);
-static struct ed *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe);
-
-/*-------------------------------------------------------------------------*/
-
-/* we need more TDs than EDs */
-#define NUM_TD 64
-
-/* +1 so we can align the storage */
-struct td gtd[NUM_TD + 1];
-
-/* pointers to aligned storage */
-struct td *ptd;
-
-/* TDs ... */
-static inline struct td *td_alloc(struct usb_device *usb_dev)
-{
- int i;
- struct td *td;
-
- td = NULL;
- for (i = 0; i < NUM_TD; i++) {
- if (ptd[i].usb_dev == NULL) {
- td = &ptd[i];
- td->usb_dev = usb_dev;
- break;
- }
- }
-
- return td;
-}
-
-static inline void ed_free(struct ed *ed)
-{
- ed->usb_dev = NULL;
-}
projects / u-boot.git / commitdiff