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USB ehci core support

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Add USB ehci core support

Signed-off-by: Michael Trimarchi <trimarchi@gandalf.sssup.it>
Signed-off-by: Remy Böhmer <linux@bohmer.net>
master
Michael Trimarchi 17 years ago committed by Remy Bohmer
parent 3e126484df
commit aaf098cfee
4 changed files with 785 additions and 0 deletions
  1. 1
      drivers/usb/Makefile
  2. 121
      drivers/usb/usb_ehci.h
  3. 634
      drivers/usb/usb_ehci_core.c
  4. 29
      drivers/usb/usb_ehci_core.h

1
drivers/usb/Makefile
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@ -28,6 +28,7 @@ LIB := $(obj)libusb.a
# core
COBJS-y += usbdcore.o
COBJS-$(CONFIG_USB_OHCI_NEW) += usb_ohci.o
COBJS-$(CONFIG_USB_EHCI) += usb_ehci_core.o
# host
COBJS-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o

121
drivers/usb/usb_ehci.h
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@ -0,0 +1,121 @@
/*-
* Copyright (c) 2007-2008, Juniper Networks, Inc.
* All rights reserved.
*
* 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 version 2 of
* the License.
*
* 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
*/
#ifndef USB_EHCI_H
#define USB_EHCI_H
/* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */
#define DeviceRequest \
((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE) << 8)
#define DeviceOutRequest \
((USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE) << 8)
#define InterfaceRequest \
((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
#define EndpointRequest \
((USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
#define EndpointOutRequest \
((USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_INTERFACE) << 8)
/*
* Register Space.
*/
struct ehci_hccr {
uint8_t cr_caplength;
uint16_t cr_hciversion;
uint32_t cr_hcsparams;
uint32_t cr_hccparams;
uint8_t cr_hcsp_portrt[8];
};
struct ehci_hcor {
uint32_t or_usbcmd;
uint32_t or_usbsts;
uint32_t or_usbintr;
uint32_t or_frindex;
uint32_t or_ctrldssegment;
uint32_t or_periodiclistbase;
uint32_t or_asynclistaddr;
uint32_t _reserved_[9];
uint32_t or_configflag;
uint32_t or_portsc[2];
uint32_t or_systune;
};
#define EHCI_PS_WKOC_E 0x00400000 /* RW wake on over current */
#define EHCI_PS_WKDSCNNT_E 0x00200000 /* RW wake on disconnect */
#define EHCI_PS_WKCNNT_E 0x00100000 /* RW wake on connect */
#define EHCI_PS_PTC 0x000f0000 /* RW port test control */
#define EHCI_PS_PIC 0x0000c000 /* RW port indicator control */
#define EHCI_PS_PO 0x00002000 /* RW port owner */
#define EHCI_PS_PP 0x00001000 /* RW,RO port power */
#define EHCI_PS_LS 0x00000c00 /* RO line status */
#define EHCI_PS_PR 0x00000100 /* RW port reset */
#define EHCI_PS_SUSP 0x00000080 /* RW suspend */
#define EHCI_PS_FPR 0x00000040 /* RW force port resume */
#define EHCI_PS_OCC 0x00000020 /* RWC over current change */
#define EHCI_PS_OCA 0x00000010 /* RO over current active */
#define EHCI_PS_PEC 0x00000008 /* RWC port enable change */
#define EHCI_PS_PE 0x00000004 /* RW port enable */
#define EHCI_PS_CSC 0x00000002 /* RWC connect status change */
#define EHCI_PS_CS 0x00000001 /* RO connect status */
#define EHCI_PS_CLEAR (EHCI_PS_OCC | EHCI_PS_PEC | EHCI_PS_CSC)
#define EHCI_PS_IS_LOWSPEED(x) (((x) & EHCI_PS_LS) == 0x00000400)
/*
* Schedule Interface Space.
*
* IMPORTANT: Software must ensure that no interface data structure
* reachable by the EHCI host controller spans a 4K page boundary!
*
* Periodic transfers (i.e. isochronous and interrupt transfers) are
* not supported.
*/
/* Queue Element Transfer Descriptor (qTD). */
struct qTD {
uint32_t qt_next;
#define QT_NEXT_TERMINATE 1
uint32_t qt_altnext;
uint32_t qt_token;
uint32_t qt_buffer[5];
};
/* Queue Head (QH). */
struct QH {
uint32_t qh_link;
#define QH_LINK_TERMINATE 1
#define QH_LINK_TYPE_ITD 0
#define QH_LINK_TYPE_QH 2
#define QH_LINK_TYPE_SITD 4
#define QH_LINK_TYPE_FSTN 6
uint32_t qh_endpt1;
uint32_t qh_endpt2;
uint32_t qh_curtd;
struct qTD qh_overlay;
};
/* Low level intit functions */
int ehci_hcd_init(void);
int ehci_hcd_stop(void);
#endif /* USB_EHCI_H */

634
drivers/usb/usb_ehci_core.c
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@ -0,0 +1,634 @@
/*-
* Copyright (c) 2007-2008, Juniper Networks, Inc.
* Copyright (c) 2008, Excito Elektronik i Skåne AB
* All rights reserved.
*
* 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 version 2 of
* the License.
*
* 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
*/
#include <common.h>
#include <usb.h>
#include <asm/io.h>
#include "usb_ehci.h"
int rootdev;
struct ehci_hccr *hccr; /* R/O registers, not need for volatile */
volatile struct ehci_hcor *hcor;
static uint16_t portreset;
static struct QH qh_list __attribute__((aligned(32)));
struct usb_device_descriptor device = {
sizeof(struct usb_device_descriptor), /* bLength */
1, /* bDescriptorType: UDESC_DEVICE */
0x0002, /* bcdUSB: v2.0 */
9, /* bDeviceClass: UDCLASS_HUB */
0, /* bDeviceSubClass: UDSUBCLASS_HUB */
1, /* bDeviceProtocol: UDPROTO_HSHUBSTT */
64, /* bMaxPacketSize: 64 bytes */
0x0000, /* idVendor */
0x0000, /* idProduct */
0x0001, /* bcdDevice */
1, /* iManufacturer */
2, /* iProduct */
0, /* iSerialNumber */
1 /* bNumConfigurations: 1 */
};
struct usb_config_descriptor config = {
sizeof(struct usb_config_descriptor),
2, /* bDescriptorType: UDESC_CONFIG */
sizeof(struct usb_config_descriptor) +
sizeof(struct usb_interface_descriptor) +
sizeof(struct usb_endpoint_descriptor),
0,
1, /* bNumInterface */
1, /* bConfigurationValue */
0, /* iConfiguration */
0x40, /* bmAttributes: UC_SELF_POWER */
0 /* bMaxPower */
};
struct usb_interface_descriptor interface = {
sizeof(struct usb_interface_descriptor), /* bLength */
4, /* bDescriptorType: UDESC_INTERFACE */
0, /* bInterfaceNumber */
0, /* bAlternateSetting */
1, /* bNumEndpoints */
9, /* bInterfaceClass: UICLASS_HUB */
0, /* bInterfaceSubClass: UISUBCLASS_HUB */
0, /* bInterfaceProtocol: UIPROTO_HSHUBSTT */
0 /* iInterface */
};
struct usb_endpoint_descriptor endpoint = {
sizeof(struct usb_endpoint_descriptor), /* bLength */
5, /* bDescriptorType: UDESC_ENDPOINT */
0x81, /* bEndpointAddress: UE_DIR_IN | EHCI_INTR_ENDPT */
3, /* bmAttributes: UE_INTERRUPT */
8, 0, /* wMaxPacketSize */
255 /* bInterval */
};
struct usb_hub_descriptor hub = {
sizeof(struct usb_hub_descriptor), /* bDescLength */
0x29, /* bDescriptorType: hub descriptor */
2, /* bNrPorts -- runtime modified */
0, 0, /* wHubCharacteristics */
0xff, /* bPwrOn2PwrGood */
{}, /* bHubCntrCurrent */
{} /* at most 7 ports! XXX */
};
static void *ehci_alloc(size_t sz, size_t align)
{
static struct QH qh __attribute__((aligned(32)));
static struct qTD td[3] __attribute__((aligned (32)));
static int ntds;
void *p;
switch (sz) {
case sizeof(struct QH):
p = &qh;
ntds = 0;
break;
case sizeof(struct qTD):
if (ntds == 3) {
debug("out of TDs");
return NULL;
}
p = &td[ntds];
ntds++;
break;
default:
debug("unknown allocation size");
return NULL;
}
memset(p, sz, 0);
return p;
}
static void ehci_free(void *p, size_t sz)
{
}
static int ehci_td_buffer(struct qTD *td, void *buf, size_t sz)
{
uint32_t addr, delta, next;
int idx;
addr = (uint32_t) buf;
idx = 0;
while (idx < 5) {
td->qt_buffer[idx] = cpu_to_le32(addr);
next = (addr + 4096) & ~4095;
delta = next - addr;
if (delta >= sz)
break;
sz -= delta;
addr = next;
idx++;
}
if (idx == 5) {
debug("out of buffer pointers (%u bytes left)", sz);
return -1;
}
return 0;
}
static int
ehci_submit_async(struct usb_device *dev, unsigned long pipe, void *buffer,
int length, struct devrequest *req)
{
struct QH *qh;
struct qTD *td;
volatile struct qTD *vtd;
unsigned long ts;
uint32_t *tdp;
uint32_t endpt, token, usbsts;
uint32_t c, toggle;
debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p", dev, pipe,
buffer, length, req);
if (req != NULL)
debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u",
req->request, req->request,
req->requesttype, req->requesttype,
le16_to_cpu(req->value), le16_to_cpu(req->value),
le16_to_cpu(req->index), le16_to_cpu(req->index));
qh = ehci_alloc(sizeof(struct QH), 32);
if (qh == NULL) {
debug("unable to allocate QH");
return -1;
}
qh->qh_link = cpu_to_le32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
c = (usb_pipespeed(pipe) != USB_SPEED_HIGH &&
usb_pipeendpoint(pipe) == 0) ? 1 : 0;
endpt = (8 << 28) |
(c << 27) |
(usb_maxpacket(dev, pipe) << 16) |
(0 << 15) |
(1 << 14) |
(usb_pipespeed(pipe) << 12) |
(usb_pipeendpoint(pipe) << 8) |
(0 << 7) | (usb_pipedevice(pipe) << 0);
qh->qh_endpt1 = cpu_to_le32(endpt);
endpt = (1 << 30) |
(dev->portnr << 23) |
(dev->parent->devnum << 16) | (0 << 8) | (0 << 0);
qh->qh_endpt2 = cpu_to_le32(endpt);
qh->qh_overlay.qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
qh->qh_overlay.qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
td = NULL;
tdp = &qh->qh_overlay.qt_next;
toggle =
usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
if (req != NULL) {
td = ehci_alloc(sizeof(struct qTD), 32);
if (td == NULL) {
debug("unable to allocate SETUP td");
goto fail;
}
td->qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
td->qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
token = (0 << 31) |
(sizeof(*req) << 16) |
(0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0);
td->qt_token = cpu_to_le32(token);
if (ehci_td_buffer(td, req, sizeof(*req)) != 0) {
debug("unable construct SETUP td");
ehci_free(td, sizeof(*td));
goto fail;
}
*tdp = cpu_to_le32((uint32_t) td);
tdp = &td->qt_next;
toggle = 1;
}
if (length > 0 || req == NULL) {
td = ehci_alloc(sizeof(struct qTD), 32);
if (td == NULL) {
debug("unable to allocate DATA td");
goto fail;
}
td->qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
td->qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
token = (toggle << 31) |
(length << 16) |
((req == NULL ? 1 : 0) << 15) |
(0 << 12) |
(3 << 10) |
((usb_pipein(pipe) ? 1 : 0) << 8) | (0x80 << 0);
td->qt_token = cpu_to_le32(token);
if (ehci_td_buffer(td, buffer, length) != 0) {
debug("unable construct DATA td");
ehci_free(td, sizeof(*td));
goto fail;
}
*tdp = cpu_to_le32((uint32_t) td);
tdp = &td->qt_next;
}
if (req != NULL) {
td = ehci_alloc(sizeof(struct qTD), 32);
if (td == NULL) {
debug("unable to allocate ACK td");
goto fail;
}
td->qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
td->qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
token = (toggle << 31) |
(0 << 16) |
(1 << 15) |
(0 << 12) |
(3 << 10) |
((usb_pipein(pipe) ? 0 : 1) << 8) | (0x80 << 0);
td->qt_token = cpu_to_le32(token);
*tdp = cpu_to_le32((uint32_t) td);
tdp = &td->qt_next;
}
qh_list.qh_link = cpu_to_le32((uint32_t) qh | QH_LINK_TYPE_QH);
usbsts = le32_to_cpu(hcor->or_usbsts);
hcor->or_usbsts = cpu_to_le32(usbsts & 0x3f);
/* Enable async. schedule. */
hcor->or_usbcmd |= cpu_to_le32(0x20);
while ((hcor->or_usbsts & cpu_to_le32(0x8000)) == 0)
udelay(1);
/* Wait for TDs to be processed. */
ts = get_timer(0);
vtd = td;
do {
token = le32_to_cpu(vtd->qt_token);
if (!(token & 0x80))
break;
} while (get_timer(ts) < CONFIG_SYS_HZ);
/* Disable async schedule. */
hcor->or_usbcmd &= ~cpu_to_le32(0x20);
while ((hcor->or_usbsts & cpu_to_le32(0x8000)) != 0)
udelay(1);
qh_list.qh_link = cpu_to_le32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
token = le32_to_cpu(qh->qh_overlay.qt_token);
if (!(token & 0x80)) {
debug("TOKEN=%#x", token);
switch (token & 0xfc) {
case 0:
toggle = token >> 31;
usb_settoggle(dev, usb_pipeendpoint(pipe),
usb_pipeout(pipe), toggle);
dev->status = 0;
break;
case 0x40:
dev->status = USB_ST_STALLED;
break;
case 0xa0:
case 0x20:
dev->status = USB_ST_BUF_ERR;
break;
case 0x50:
case 0x10:
dev->status = USB_ST_BABBLE_DET;
break;
default:
dev->status = USB_ST_CRC_ERR;
break;
}
dev->act_len = length - ((token >> 16) & 0x7fff);
} else {
dev->act_len = 0;
debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x",
dev->devnum, le32_to_cpu(hcor->or_usbsts),
le32_to_cpu(hcor->or_portsc[0]),
le32_to_cpu(hcor->or_portsc[1]));
}
return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
fail:
td = (void *)le32_to_cpu(qh->qh_overlay.qt_next);
while (td != (void *)QT_NEXT_TERMINATE) {
qh->qh_overlay.qt_next = td->qt_next;
ehci_free(td, sizeof(*td));
td = (void *)le32_to_cpu(qh->qh_overlay.qt_next);
}
ehci_free(qh, sizeof(*qh));
return -1;
}
static inline int min3(int a, int b, int c)
{
if (b < a)
a = b;
if (c < a)
a = c;
return a;
}
ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
int length, struct devrequest *req)
{
uint8_t tmpbuf[4];
u16 typeReq;
void *srcptr;
int len, srclen;
uint32_t reg;
srclen = 0;
srcptr = NULL;
debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u",
req->request, req->request,
req->requesttype, req->requesttype,
le16_to_cpu(req->value), le16_to_cpu(req->index));
typeReq = req->request << 8 | req->requesttype;
switch (typeReq) {
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
switch (le16_to_cpu(req->value) >> 8) {
case USB_DT_DEVICE:
srcptr = &device;
srclen = sizeof(struct usb_device_descriptor);
break;
case USB_DT_CONFIG:
srcptr = &config;
srclen = sizeof(config) +
sizeof(struct usb_interface_descriptor) +
sizeof(struct usb_hub_descriptor);
break;
case USB_DT_STRING:
switch (le16_to_cpu(req->value) & 0xff) {
case 0: /* Language */
srcptr = "\4\3\1\0";
srclen = 4;
break;
case 1: /* Vendor */
srcptr = "\16\3u\0-\0b\0o\0o\0t\0";
srclen = 14;
break;
case 2: /* Product */
srcptr = "\52\3E\0H\0C\0I\0 "
"\0H\0o\0s\0t\0 "
"\0C\0o\0n\0t\0r\0o\0l\0l\0e\0r\0";
srclen = 42;
break;
default:
goto unknown;
}
break;
default:
debug("unknown value %x", le16_to_cpu(req->value));
goto unknown;
}
break;
case USB_REQ_GET_DESCRIPTOR | ((USB_DIR_IN | USB_RT_HUB) << 8):
switch (le16_to_cpu(req->value) >> 8) {
case USB_DT_HUB:
srcptr = &hub;
srclen = sizeof(hub);
break;
default:
debug("unknown value %x", le16_to_cpu(req->value));
goto unknown;
}
break;
case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
rootdev = le16_to_cpu(req->value);
break;
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
/* Nothing to do */
break;
case USB_REQ_GET_STATUS | ((USB_DIR_IN | USB_RT_HUB) << 8):
tmpbuf[0] = 1; /* USB_STATUS_SELFPOWERED */
tmpbuf[1] = 0;
srcptr = tmpbuf;
srclen = 2;
break;
case DeviceRequest | USB_REQ_GET_STATUS:
memset(tmpbuf, 0, 4);
reg = le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index)
- 1]);
if (reg & EHCI_PS_CS)
tmpbuf[0] |= USB_PORT_STAT_CONNECTION;
if (reg & EHCI_PS_PE)
tmpbuf[0] |= USB_PORT_STAT_ENABLE;
if (reg & EHCI_PS_SUSP)
tmpbuf[0] |= USB_PORT_STAT_SUSPEND;
if (reg & EHCI_PS_OCA)
tmpbuf[0] |= USB_PORT_STAT_OVERCURRENT;
if (reg & EHCI_PS_PR)
tmpbuf[0] |= USB_PORT_STAT_RESET;
if (reg & EHCI_PS_PP)
tmpbuf[1] |= USB_PORT_STAT_POWER >> 8;
tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
if (reg & EHCI_PS_CSC)
tmpbuf[2] |= USB_PORT_STAT_C_CONNECTION;
if (reg & EHCI_PS_PEC)
tmpbuf[2] |= USB_PORT_STAT_C_ENABLE;
if (reg & EHCI_PS_OCC)
tmpbuf[2] |= USB_PORT_STAT_C_OVERCURRENT;
if (portreset & (1 << le16_to_cpu(req->index)))
tmpbuf[2] |= USB_PORT_STAT_C_RESET;
srcptr = tmpbuf;
srclen = 4;
break;
case DeviceOutRequest | USB_REQ_SET_FEATURE:
reg = le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index) - 1]);
reg &= ~EHCI_PS_CLEAR;
switch (le16_to_cpu(req->value)) {
case USB_PORT_FEAT_POWER:
reg |= EHCI_PS_PP;
break;
case USB_PORT_FEAT_RESET:
if (EHCI_PS_IS_LOWSPEED(reg)) {
/* Low speed device, give up ownership. */
reg |= EHCI_PS_PO;
break;
}
/* Start reset sequence. */
reg &= ~EHCI_PS_PE;
reg |= EHCI_PS_PR;
hcor->or_portsc[le16_to_cpu(req->index) - 1] =
cpu_to_le32(reg);
/* Wait for reset to complete. */
udelay(500000);
/* Terminate reset sequence. */
reg &= ~EHCI_PS_PR;
/* TODO: is it only fsl chip that requires this
* manual setting of port enable?
*/
reg |= EHCI_PS_PE;
hcor->or_portsc[le16_to_cpu(req->index) - 1] =
cpu_to_le32(reg);
/* Wait for HC to complete reset. */
udelay(2000);
reg =
le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index)
- 1]);
reg &= ~EHCI_PS_CLEAR;
if ((reg & EHCI_PS_PE) == 0) {
/* Not a high speed device, give up
* ownership. */
reg |= EHCI_PS_PO;
break;
}
portreset |= 1 << le16_to_cpu(req->index);
break;
default:
debug("unknown feature %x", le16_to_cpu(req->value));
goto unknown;
}
hcor->or_portsc[le16_to_cpu(req->index) - 1] =
cpu_to_le32(reg);
break;
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
reg = le32_to_cpu(hcor->or_portsc[le16_to_cpu(req->index) - 1]);
reg &= ~EHCI_PS_CLEAR;
switch (le16_to_cpu(req->value)) {
case USB_PORT_FEAT_ENABLE:
reg &= ~EHCI_PS_PE;
break;
case USB_PORT_FEAT_C_CONNECTION:
reg |= EHCI_PS_CSC;
break;
case USB_PORT_FEAT_C_RESET:
portreset &= ~(1 << le16_to_cpu(req->index));
break;
default:
debug("unknown feature %x", le16_to_cpu(req->value));
goto unknown;
}
hcor->or_portsc[le16_to_cpu(req->index) - 1] =
cpu_to_le32(reg);
break;
default:
debug("Unknown request");
goto unknown;
}
len = min3(srclen, le16_to_cpu(req->length), length);
if (srcptr != NULL && len > 0)
memcpy(buffer, srcptr, len);
dev->act_len = len;
dev->status = 0;
return 0;
unknown:
debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x",
req->requesttype, req->request, le16_to_cpu(req->value),
le16_to_cpu(req->index), le16_to_cpu(req->length));
dev->act_len = 0;
dev->status = USB_ST_STALLED;
return -1;
}
int usb_lowlevel_stop(void)
{
return ehci_hcd_stop();
}
int usb_lowlevel_init(void)
{
uint32_t reg;
if (ehci_hcd_init() != 0)
return -1;
/* Set head of reclaim list */
memset(&qh_list, 0, sizeof(qh_list));
qh_list.qh_link = cpu_to_le32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
qh_list.qh_endpt1 = cpu_to_le32((1 << 15) | (USB_SPEED_HIGH << 12));
qh_list.qh_curtd = cpu_to_le32(QT_NEXT_TERMINATE);
qh_list.qh_overlay.qt_next = cpu_to_le32(QT_NEXT_TERMINATE);
qh_list.qh_overlay.qt_altnext = cpu_to_le32(QT_NEXT_TERMINATE);
qh_list.qh_overlay.qt_token = cpu_to_le32(0x40);
/* Set async. queue head pointer. */
hcor->or_asynclistaddr = cpu_to_le32((uint32_t)&qh_list);
reg = le32_to_cpu(hccr->cr_hcsparams);
hub.bNbrPorts = reg & 0xf;
if (reg & 0x10000) /* Port Indicators */
hub.wHubCharacteristics |= 0x80;
if (reg & 0x10) /* Port Power Control */
hub.wHubCharacteristics |= 0x01;
/* take control over the ports */
hcor->or_configflag |= cpu_to_le32(1);
/* Start the host controller. */
hcor->or_usbcmd |= cpu_to_le32(1);
rootdev = 0;
return 0;
}
int
submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int length)
{
if (usb_pipetype(pipe) != PIPE_BULK) {
debug("non-bulk pipe (type=%lu)", usb_pipetype(pipe));
return -1;
}
return ehci_submit_async(dev, pipe, buffer, length, NULL);
}
int
submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int length, struct devrequest *setup)
{
if (usb_pipetype(pipe) != PIPE_CONTROL) {
debug("non-control pipe (type=%lu)", usb_pipetype(pipe));
return -1;
}
if (usb_pipedevice(pipe) == rootdev) {
if (rootdev == 0)
dev->speed = USB_SPEED_HIGH;
return ehci_submit_root(dev, pipe, buffer, length, setup);
}
return ehci_submit_async(dev, pipe, buffer, length, setup);
}
int
submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int length, int interval)
{
debug("dev=%p, pipe=%lu, buffer=%p, length=%d, interval=%d",
dev, pipe, buffer, length, interval);
return -1;
}

29
drivers/usb/usb_ehci_core.h
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@ -0,0 +1,29 @@
/*-
* Copyright (c) 2007-2008, Juniper Networks, Inc.
* Copyright (c) 2008, Excito Elektronik i Skåne AB
* All rights reserved.
*
* 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 version 2 of
* the License.
*
* 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
*/
#ifndef USB_EHCI_CORE_H
#define USB_EHCI_CORE_H
extern int rootdev;
extern struct ehci_hccr *hccr;
extern volatile struct ehci_hcor *hcor;
#endif
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