mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 06:30:39 +00:00
3ecfa9525c
With this, the EHCI seems to "recover" from a timeout. This is particularly observable if you were to ping the wrong IP Address and then ping the correct one or if there was a temporary failure during tftp sessions. All it takes is one timeout to disable it. If you have a noisy network (lot of traffic), even if the traffic is not for the board, the timeouts don't occur. Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
899 lines
22 KiB
C
899 lines
22 KiB
C
/*-
|
|
* Copyright (c) 2007-2008, Juniper Networks, Inc.
|
|
* Copyright (c) 2008, Excito Elektronik i Skåne AB
|
|
* Copyright (c) 2008, Michael Trimarchi <trimarchimichael@yahoo.it>
|
|
*
|
|
* 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 <asm/byteorder.h>
|
|
#include <usb.h>
|
|
#include <asm/io.h>
|
|
#include <malloc.h>
|
|
#include <watchdog.h>
|
|
|
|
#include "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)));
|
|
|
|
static struct descriptor {
|
|
struct usb_hub_descriptor hub;
|
|
struct usb_device_descriptor device;
|
|
struct usb_linux_config_descriptor config;
|
|
struct usb_linux_interface_descriptor interface;
|
|
struct usb_endpoint_descriptor endpoint;
|
|
} __attribute__ ((packed)) descriptor = {
|
|
{
|
|
0x8, /* bDescLength */
|
|
0x29, /* bDescriptorType: hub descriptor */
|
|
2, /* bNrPorts -- runtime modified */
|
|
0, /* wHubCharacteristics */
|
|
0xff, /* bPwrOn2PwrGood */
|
|
0, /* bHubCntrCurrent */
|
|
{}, /* Device removable */
|
|
{} /* at most 7 ports! XXX */
|
|
},
|
|
{
|
|
0x12, /* bLength */
|
|
1, /* bDescriptorType: UDESC_DEVICE */
|
|
cpu_to_le16(0x0200), /* bcdUSB: v2.0 */
|
|
9, /* bDeviceClass: UDCLASS_HUB */
|
|
0, /* bDeviceSubClass: UDSUBCLASS_HUB */
|
|
1, /* bDeviceProtocol: UDPROTO_HSHUBSTT */
|
|
64, /* bMaxPacketSize: 64 bytes */
|
|
0x0000, /* idVendor */
|
|
0x0000, /* idProduct */
|
|
cpu_to_le16(0x0100), /* bcdDevice */
|
|
1, /* iManufacturer */
|
|
2, /* iProduct */
|
|
0, /* iSerialNumber */
|
|
1 /* bNumConfigurations: 1 */
|
|
},
|
|
{
|
|
0x9,
|
|
2, /* bDescriptorType: UDESC_CONFIG */
|
|
cpu_to_le16(0x19),
|
|
1, /* bNumInterface */
|
|
1, /* bConfigurationValue */
|
|
0, /* iConfiguration */
|
|
0x40, /* bmAttributes: UC_SELF_POWER */
|
|
0 /* bMaxPower */
|
|
},
|
|
{
|
|
0x9, /* 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 */
|
|
},
|
|
{
|
|
0x7, /* bLength */
|
|
5, /* bDescriptorType: UDESC_ENDPOINT */
|
|
0x81, /* bEndpointAddress:
|
|
* UE_DIR_IN | EHCI_INTR_ENDPT
|
|
*/
|
|
3, /* bmAttributes: UE_INTERRUPT */
|
|
8, /* wMaxPacketSize */
|
|
255 /* bInterval */
|
|
},
|
|
};
|
|
|
|
#if defined(CONFIG_EHCI_IS_TDI)
|
|
#define ehci_is_TDI() (1)
|
|
#else
|
|
#define ehci_is_TDI() (0)
|
|
#endif
|
|
|
|
#if defined(CONFIG_EHCI_DCACHE)
|
|
/*
|
|
* Routines to handle (flush/invalidate) the dcache for the QH and qTD
|
|
* structures and data buffers. This is needed on platforms using this
|
|
* EHCI support with dcache enabled.
|
|
*/
|
|
static void flush_invalidate(u32 addr, int size, int flush)
|
|
{
|
|
if (flush)
|
|
flush_dcache_range(addr, addr + size);
|
|
else
|
|
invalidate_dcache_range(addr, addr + size);
|
|
}
|
|
|
|
static void cache_qtd(struct qTD *qtd, int flush)
|
|
{
|
|
u32 *ptr = (u32 *)qtd->qt_buffer[0];
|
|
int len = (qtd->qt_token & 0x7fff0000) >> 16;
|
|
|
|
flush_invalidate((u32)qtd, sizeof(struct qTD), flush);
|
|
if (ptr && len)
|
|
flush_invalidate((u32)ptr, len, flush);
|
|
}
|
|
|
|
|
|
static inline struct QH *qh_addr(struct QH *qh)
|
|
{
|
|
return (struct QH *)((u32)qh & 0xffffffe0);
|
|
}
|
|
|
|
static void cache_qh(struct QH *qh, int flush)
|
|
{
|
|
struct qTD *qtd;
|
|
struct qTD *next;
|
|
static struct qTD *first_qtd;
|
|
|
|
/*
|
|
* Walk the QH list and flush/invalidate all entries
|
|
*/
|
|
while (1) {
|
|
flush_invalidate((u32)qh_addr(qh), sizeof(struct QH), flush);
|
|
if ((u32)qh & QH_LINK_TYPE_QH)
|
|
break;
|
|
qh = qh_addr(qh);
|
|
qh = (struct QH *)qh->qh_link;
|
|
}
|
|
qh = qh_addr(qh);
|
|
|
|
/*
|
|
* Save first qTD pointer, needed for invalidating pass on this QH
|
|
*/
|
|
if (flush)
|
|
first_qtd = qtd = (struct qTD *)(*(u32 *)&qh->qh_overlay &
|
|
0xffffffe0);
|
|
else
|
|
qtd = first_qtd;
|
|
|
|
/*
|
|
* Walk the qTD list and flush/invalidate all entries
|
|
*/
|
|
while (1) {
|
|
if (qtd == NULL)
|
|
break;
|
|
cache_qtd(qtd, flush);
|
|
next = (struct qTD *)((u32)qtd->qt_next & 0xffffffe0);
|
|
if (next == qtd)
|
|
break;
|
|
qtd = next;
|
|
}
|
|
}
|
|
|
|
static inline void ehci_flush_dcache(struct QH *qh)
|
|
{
|
|
cache_qh(qh, 1);
|
|
}
|
|
|
|
static inline void ehci_invalidate_dcache(struct QH *qh)
|
|
{
|
|
cache_qh(qh, 0);
|
|
}
|
|
#else /* CONFIG_EHCI_DCACHE */
|
|
/*
|
|
*
|
|
*/
|
|
static inline void ehci_flush_dcache(struct QH *qh)
|
|
{
|
|
}
|
|
|
|
static inline void ehci_invalidate_dcache(struct QH *qh)
|
|
{
|
|
}
|
|
#endif /* CONFIG_EHCI_DCACHE */
|
|
|
|
static int handshake(uint32_t *ptr, uint32_t mask, uint32_t done, int usec)
|
|
{
|
|
uint32_t result;
|
|
do {
|
|
result = ehci_readl(ptr);
|
|
udelay(5);
|
|
if (result == ~(uint32_t)0)
|
|
return -1;
|
|
result &= mask;
|
|
if (result == done)
|
|
return 0;
|
|
usec--;
|
|
} while (usec > 0);
|
|
return -1;
|
|
}
|
|
|
|
static void ehci_free(void *p, size_t sz)
|
|
{
|
|
|
|
}
|
|
|
|
static int ehci_reset(void)
|
|
{
|
|
uint32_t cmd;
|
|
uint32_t tmp;
|
|
uint32_t *reg_ptr;
|
|
int ret = 0;
|
|
|
|
cmd = ehci_readl(&hcor->or_usbcmd);
|
|
cmd = (cmd & ~CMD_RUN) | CMD_RESET;
|
|
ehci_writel(&hcor->or_usbcmd, cmd);
|
|
ret = handshake((uint32_t *)&hcor->or_usbcmd, CMD_RESET, 0, 250 * 1000);
|
|
if (ret < 0) {
|
|
printf("EHCI fail to reset\n");
|
|
goto out;
|
|
}
|
|
|
|
if (ehci_is_TDI()) {
|
|
reg_ptr = (uint32_t *)((u8 *)hcor + USBMODE);
|
|
tmp = ehci_readl(reg_ptr);
|
|
tmp |= USBMODE_CM_HC;
|
|
#if defined(CONFIG_EHCI_MMIO_BIG_ENDIAN)
|
|
tmp |= USBMODE_BE;
|
|
#endif
|
|
ehci_writel(reg_ptr, tmp);
|
|
}
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
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\n");
|
|
return NULL;
|
|
}
|
|
p = &td[ntds];
|
|
ntds++;
|
|
break;
|
|
default:
|
|
debug("unknown allocation size\n");
|
|
return NULL;
|
|
}
|
|
|
|
memset(p, 0, sz);
|
|
return p;
|
|
}
|
|
|
|
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_hc32(addr);
|
|
td->qt_buffer_hi[idx] = 0;
|
|
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)\n", 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;
|
|
uint32_t cmd;
|
|
int timeout;
|
|
int ret = 0;
|
|
|
|
debug("dev=%p, pipe=%lx, buffer=%p, length=%d, req=%p\n", dev, pipe,
|
|
buffer, length, req);
|
|
if (req != NULL)
|
|
debug("req=%u (%#x), type=%u (%#x), value=%u (%#x), index=%u\n",
|
|
req->request, req->request,
|
|
req->requesttype, req->requesttype,
|
|
le16_to_cpu(req->value), le16_to_cpu(req->value),
|
|
le16_to_cpu(req->index));
|
|
|
|
qh = ehci_alloc(sizeof(struct QH), 32);
|
|
if (qh == NULL) {
|
|
debug("unable to allocate QH\n");
|
|
return -1;
|
|
}
|
|
qh->qh_link = cpu_to_hc32((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_hc32(endpt);
|
|
endpt = (1 << 30) |
|
|
(dev->portnr << 23) |
|
|
(dev->parent->devnum << 16) | (0 << 8) | (0 << 0);
|
|
qh->qh_endpt2 = cpu_to_hc32(endpt);
|
|
qh->qh_overlay.qt_next = cpu_to_hc32(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\n");
|
|
goto fail;
|
|
}
|
|
td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
|
|
td->qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
|
|
token = (0 << 31) |
|
|
(sizeof(*req) << 16) |
|
|
(0 << 15) | (0 << 12) | (3 << 10) | (2 << 8) | (0x80 << 0);
|
|
td->qt_token = cpu_to_hc32(token);
|
|
if (ehci_td_buffer(td, req, sizeof(*req)) != 0) {
|
|
debug("unable construct SETUP td\n");
|
|
ehci_free(td, sizeof(*td));
|
|
goto fail;
|
|
}
|
|
*tdp = cpu_to_hc32((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\n");
|
|
goto fail;
|
|
}
|
|
td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
|
|
td->qt_altnext = cpu_to_hc32(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_hc32(token);
|
|
if (ehci_td_buffer(td, buffer, length) != 0) {
|
|
debug("unable construct DATA td\n");
|
|
ehci_free(td, sizeof(*td));
|
|
goto fail;
|
|
}
|
|
*tdp = cpu_to_hc32((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\n");
|
|
goto fail;
|
|
}
|
|
td->qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
|
|
td->qt_altnext = cpu_to_hc32(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_hc32(token);
|
|
*tdp = cpu_to_hc32((uint32_t) td);
|
|
tdp = &td->qt_next;
|
|
}
|
|
|
|
qh_list.qh_link = cpu_to_hc32((uint32_t) qh | QH_LINK_TYPE_QH);
|
|
|
|
/* Flush dcache */
|
|
ehci_flush_dcache(&qh_list);
|
|
|
|
usbsts = ehci_readl(&hcor->or_usbsts);
|
|
ehci_writel(&hcor->or_usbsts, (usbsts & 0x3f));
|
|
|
|
/* Enable async. schedule. */
|
|
cmd = ehci_readl(&hcor->or_usbcmd);
|
|
cmd |= CMD_ASE;
|
|
ehci_writel(&hcor->or_usbcmd, cmd);
|
|
|
|
ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, STD_ASS,
|
|
100 * 1000);
|
|
if (ret < 0) {
|
|
printf("EHCI fail timeout STD_ASS set\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* Wait for TDs to be processed. */
|
|
ts = get_timer(0);
|
|
vtd = td;
|
|
timeout = USB_TIMEOUT_MS(pipe);
|
|
do {
|
|
/* Invalidate dcache */
|
|
ehci_invalidate_dcache(&qh_list);
|
|
token = hc32_to_cpu(vtd->qt_token);
|
|
if (!(token & 0x80))
|
|
break;
|
|
WATCHDOG_RESET();
|
|
} while (get_timer(ts) < timeout);
|
|
|
|
/* Check that the TD processing happened */
|
|
if (token & 0x80) {
|
|
printf("EHCI timed out on TD - token=%#x\n", token);
|
|
}
|
|
|
|
/* Disable async schedule. */
|
|
cmd = ehci_readl(&hcor->or_usbcmd);
|
|
cmd &= ~CMD_ASE;
|
|
ehci_writel(&hcor->or_usbcmd, cmd);
|
|
|
|
ret = handshake((uint32_t *)&hcor->or_usbsts, STD_ASS, 0,
|
|
100 * 1000);
|
|
if (ret < 0) {
|
|
printf("EHCI fail timeout STD_ASS reset\n");
|
|
goto fail;
|
|
}
|
|
|
|
qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
|
|
|
|
token = hc32_to_cpu(qh->qh_overlay.qt_token);
|
|
if (!(token & 0x80)) {
|
|
debug("TOKEN=%#x\n", 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;
|
|
if ((token & 0x40) == 0x40)
|
|
dev->status |= USB_ST_STALLED;
|
|
break;
|
|
}
|
|
dev->act_len = length - ((token >> 16) & 0x7fff);
|
|
} else {
|
|
dev->act_len = 0;
|
|
debug("dev=%u, usbsts=%#x, p[1]=%#x, p[2]=%#x\n",
|
|
dev->devnum, ehci_readl(&hcor->or_usbsts),
|
|
ehci_readl(&hcor->or_portsc[0]),
|
|
ehci_readl(&hcor->or_portsc[1]));
|
|
}
|
|
|
|
return (dev->status != USB_ST_NOT_PROC) ? 0 : -1;
|
|
|
|
fail:
|
|
td = (void *)hc32_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 *)hc32_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;
|
|
}
|
|
|
|
int
|
|
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 = NULL;
|
|
int len, srclen;
|
|
uint32_t reg;
|
|
uint32_t *status_reg;
|
|
|
|
if (le16_to_cpu(req->index) > CONFIG_SYS_USB_EHCI_MAX_ROOT_PORTS) {
|
|
printf("The request port(%d) is not configured\n",
|
|
le16_to_cpu(req->index) - 1);
|
|
return -1;
|
|
}
|
|
status_reg = (uint32_t *)&hcor->or_portsc[
|
|
le16_to_cpu(req->index) - 1];
|
|
srclen = 0;
|
|
|
|
debug("req=%u (%#x), type=%u (%#x), value=%u, index=%u\n",
|
|
req->request, req->request,
|
|
req->requesttype, req->requesttype,
|
|
le16_to_cpu(req->value), le16_to_cpu(req->index));
|
|
|
|
typeReq = req->request | req->requesttype << 8;
|
|
|
|
switch (typeReq) {
|
|
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
|
switch (le16_to_cpu(req->value) >> 8) {
|
|
case USB_DT_DEVICE:
|
|
debug("USB_DT_DEVICE request\n");
|
|
srcptr = &descriptor.device;
|
|
srclen = 0x12;
|
|
break;
|
|
case USB_DT_CONFIG:
|
|
debug("USB_DT_CONFIG config\n");
|
|
srcptr = &descriptor.config;
|
|
srclen = 0x19;
|
|
break;
|
|
case USB_DT_STRING:
|
|
debug("USB_DT_STRING config\n");
|
|
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:
|
|
debug("unknown value DT_STRING %x\n",
|
|
le16_to_cpu(req->value));
|
|
goto unknown;
|
|
}
|
|
break;
|
|
default:
|
|
debug("unknown value %x\n", 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:
|
|
debug("USB_DT_HUB config\n");
|
|
srcptr = &descriptor.hub;
|
|
srclen = 0x8;
|
|
break;
|
|
default:
|
|
debug("unknown value %x\n", le16_to_cpu(req->value));
|
|
goto unknown;
|
|
}
|
|
break;
|
|
case USB_REQ_SET_ADDRESS | (USB_RECIP_DEVICE << 8):
|
|
debug("USB_REQ_SET_ADDRESS\n");
|
|
rootdev = le16_to_cpu(req->value);
|
|
break;
|
|
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
|
debug("USB_REQ_SET_CONFIGURATION\n");
|
|
/* 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 USB_REQ_GET_STATUS | ((USB_RT_PORT | USB_DIR_IN) << 8):
|
|
memset(tmpbuf, 0, 4);
|
|
reg = ehci_readl(status_reg);
|
|
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;
|
|
|
|
if (ehci_is_TDI()) {
|
|
switch ((reg >> 26) & 3) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
tmpbuf[1] |= USB_PORT_STAT_LOW_SPEED >> 8;
|
|
break;
|
|
case 2:
|
|
default:
|
|
tmpbuf[1] |= USB_PORT_STAT_HIGH_SPEED >> 8;
|
|
break;
|
|
}
|
|
} else {
|
|
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 USB_REQ_SET_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
|
|
reg = ehci_readl(status_reg);
|
|
reg &= ~EHCI_PS_CLEAR;
|
|
switch (le16_to_cpu(req->value)) {
|
|
case USB_PORT_FEAT_ENABLE:
|
|
reg |= EHCI_PS_PE;
|
|
ehci_writel(status_reg, reg);
|
|
break;
|
|
case USB_PORT_FEAT_POWER:
|
|
if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams))) {
|
|
reg |= EHCI_PS_PP;
|
|
ehci_writel(status_reg, reg);
|
|
}
|
|
break;
|
|
case USB_PORT_FEAT_RESET:
|
|
if ((reg & (EHCI_PS_PE | EHCI_PS_CS)) == EHCI_PS_CS &&
|
|
!ehci_is_TDI() &&
|
|
EHCI_PS_IS_LOWSPEED(reg)) {
|
|
/* Low speed device, give up ownership. */
|
|
debug("port %d low speed --> companion\n",
|
|
req->index - 1);
|
|
reg |= EHCI_PS_PO;
|
|
ehci_writel(status_reg, reg);
|
|
break;
|
|
} else {
|
|
int ret;
|
|
|
|
reg |= EHCI_PS_PR;
|
|
reg &= ~EHCI_PS_PE;
|
|
ehci_writel(status_reg, reg);
|
|
/*
|
|
* caller must wait, then call GetPortStatus
|
|
* usb 2.0 specification say 50 ms resets on
|
|
* root
|
|
*/
|
|
wait_ms(50);
|
|
/* terminate the reset */
|
|
ehci_writel(status_reg, reg & ~EHCI_PS_PR);
|
|
/*
|
|
* A host controller must terminate the reset
|
|
* and stabilize the state of the port within
|
|
* 2 milliseconds
|
|
*/
|
|
ret = handshake(status_reg, EHCI_PS_PR, 0,
|
|
2 * 1000);
|
|
if (!ret)
|
|
portreset |=
|
|
1 << le16_to_cpu(req->index);
|
|
else
|
|
printf("port(%d) reset error\n",
|
|
le16_to_cpu(req->index) - 1);
|
|
}
|
|
break;
|
|
default:
|
|
debug("unknown feature %x\n", le16_to_cpu(req->value));
|
|
goto unknown;
|
|
}
|
|
/* unblock posted writes */
|
|
(void) ehci_readl(&hcor->or_usbcmd);
|
|
break;
|
|
case USB_REQ_CLEAR_FEATURE | ((USB_DIR_OUT | USB_RT_PORT) << 8):
|
|
reg = ehci_readl(status_reg);
|
|
switch (le16_to_cpu(req->value)) {
|
|
case USB_PORT_FEAT_ENABLE:
|
|
reg &= ~EHCI_PS_PE;
|
|
break;
|
|
case USB_PORT_FEAT_C_ENABLE:
|
|
reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_PE;
|
|
break;
|
|
case USB_PORT_FEAT_POWER:
|
|
if (HCS_PPC(ehci_readl(&hccr->cr_hcsparams)))
|
|
reg = reg & ~(EHCI_PS_CLEAR | EHCI_PS_PP);
|
|
case USB_PORT_FEAT_C_CONNECTION:
|
|
reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_CSC;
|
|
break;
|
|
case USB_PORT_FEAT_OVER_CURRENT:
|
|
reg = (reg & ~EHCI_PS_CLEAR) | EHCI_PS_OCC;
|
|
break;
|
|
case USB_PORT_FEAT_C_RESET:
|
|
portreset &= ~(1 << le16_to_cpu(req->index));
|
|
break;
|
|
default:
|
|
debug("unknown feature %x\n", le16_to_cpu(req->value));
|
|
goto unknown;
|
|
}
|
|
ehci_writel(status_reg, reg);
|
|
/* unblock posted write */
|
|
(void) ehci_readl(&hcor->or_usbcmd);
|
|
break;
|
|
default:
|
|
debug("Unknown request\n");
|
|
goto unknown;
|
|
}
|
|
|
|
wait_ms(1);
|
|
len = min3(srclen, le16_to_cpu(req->length), length);
|
|
if (srcptr != NULL && len > 0)
|
|
memcpy(buffer, srcptr, len);
|
|
else
|
|
debug("Len is 0\n");
|
|
|
|
dev->act_len = len;
|
|
dev->status = 0;
|
|
return 0;
|
|
|
|
unknown:
|
|
debug("requesttype=%x, request=%x, value=%x, index=%x, length=%x\n",
|
|
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;
|
|
uint32_t cmd;
|
|
|
|
if (ehci_hcd_init() != 0)
|
|
return -1;
|
|
|
|
/* EHCI spec section 4.1 */
|
|
if (ehci_reset() != 0)
|
|
return -1;
|
|
|
|
#if defined(CONFIG_EHCI_HCD_INIT_AFTER_RESET)
|
|
if (ehci_hcd_init() != 0)
|
|
return -1;
|
|
#endif
|
|
|
|
/* Set head of reclaim list */
|
|
memset(&qh_list, 0, sizeof(qh_list));
|
|
qh_list.qh_link = cpu_to_hc32((uint32_t)&qh_list | QH_LINK_TYPE_QH);
|
|
qh_list.qh_endpt1 = cpu_to_hc32((1 << 15) | (USB_SPEED_HIGH << 12));
|
|
qh_list.qh_curtd = cpu_to_hc32(QT_NEXT_TERMINATE);
|
|
qh_list.qh_overlay.qt_next = cpu_to_hc32(QT_NEXT_TERMINATE);
|
|
qh_list.qh_overlay.qt_altnext = cpu_to_hc32(QT_NEXT_TERMINATE);
|
|
qh_list.qh_overlay.qt_token = cpu_to_hc32(0x40);
|
|
|
|
/* Set async. queue head pointer. */
|
|
ehci_writel(&hcor->or_asynclistaddr, (uint32_t)&qh_list);
|
|
|
|
reg = ehci_readl(&hccr->cr_hcsparams);
|
|
descriptor.hub.bNbrPorts = HCS_N_PORTS(reg);
|
|
printf("Register %x NbrPorts %d\n", reg, descriptor.hub.bNbrPorts);
|
|
/* Port Indicators */
|
|
if (HCS_INDICATOR(reg))
|
|
descriptor.hub.wHubCharacteristics |= 0x80;
|
|
/* Port Power Control */
|
|
if (HCS_PPC(reg))
|
|
descriptor.hub.wHubCharacteristics |= 0x01;
|
|
|
|
/* Start the host controller. */
|
|
cmd = ehci_readl(&hcor->or_usbcmd);
|
|
/*
|
|
* Philips, Intel, and maybe others need CMD_RUN before the
|
|
* root hub will detect new devices (why?); NEC doesn't
|
|
*/
|
|
cmd &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
|
|
cmd |= CMD_RUN;
|
|
ehci_writel(&hcor->or_usbcmd, cmd);
|
|
|
|
/* take control over the ports */
|
|
cmd = ehci_readl(&hcor->or_configflag);
|
|
cmd |= FLAG_CF;
|
|
ehci_writel(&hcor->or_configflag, cmd);
|
|
/* unblock posted write */
|
|
cmd = ehci_readl(&hcor->or_usbcmd);
|
|
wait_ms(5);
|
|
reg = HC_VERSION(ehci_readl(&hccr->cr_capbase));
|
|
printf("USB EHCI %x.%02x\n", reg >> 8, reg & 0xff);
|
|
|
|
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;
|
|
}
|