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upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/drivers/usb/sl811_usb.c

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/*
* (C) Copyright 2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* This code is based on linux driver for sl811hs chip, source at
* drivers/usb/host/sl811.c:
*
* SL811 Host Controller Interface driver for USB.
*
* Copyright (c) 2003/06, Courage Co., Ltd.
*
* Based on:
* 1.uhci.c by Linus Torvalds, Johannes Erdfelt, Randy Dunlap,
* Georg Acher, Deti Fliegl, Thomas Sailer, Roman Weissgaerber,
* Adam Richter, Gregory P. Smith;
* 2.Original SL811 driver (hc_sl811.o) by Pei Liu <pbl@cypress.com>
* 3.Rewrited as sl811.o by Yin Aihua <yinah:couragetech.com.cn>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#ifdef CONFIG_USB_SL811HS
#include <mpc8xx.h>
#include <usb.h>
#include "sl811.h"
#include "../../board/kup/common/kup.h"
#ifdef __PPC__
# define EIEIO __asm__ volatile ("eieio")
#else
# define EIEIO /* nothing */
#endif
#define SL811_ADR (0x50000000)
#define SL811_DAT (0x50000001)
#define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
#ifdef SL811_DEBUG
static int debug = 9;
#endif
static int root_hub_devnum = 0;
static struct usb_port_status rh_status = { 0 };/* root hub port status */
static int sl811_rh_submit_urb(struct usb_device *usb_dev, unsigned long pipe,
void *data, int buf_len, struct devrequest *cmd);
static void sl811_write (__u8 index, __u8 data)
{
*(volatile unsigned char *) (SL811_ADR) = index;
EIEIO;
*(volatile unsigned char *) (SL811_DAT) = data;
EIEIO;
}
static __u8 sl811_read (__u8 index)
{
__u8 data;
*(volatile unsigned char *) (SL811_ADR) = index;
EIEIO;
data = *(volatile unsigned char *) (SL811_DAT);
EIEIO;
return (data);
}
/*
* Read consecutive bytes of data from the SL811H/SL11H buffer
*/
static void inline sl811_read_buf(__u8 offset, __u8 *buf, __u8 size)
{
*(volatile unsigned char *) (SL811_ADR) = offset;
EIEIO;
while (size--) {
*buf++ = *(volatile unsigned char *) (SL811_DAT);
EIEIO;
}
}
/*
* Write consecutive bytes of data to the SL811H/SL11H buffer
*/
static void inline sl811_write_buf(__u8 offset, __u8 *buf, __u8 size)
{
*(volatile unsigned char *) (SL811_ADR) = offset;
EIEIO;
while (size--) {
*(volatile unsigned char *) (SL811_DAT) = *buf++;
EIEIO;
}
}
int usb_init_kup4x (void)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
int i;
unsigned char tmp;
memctl = &immap->im_memctl;
memctl->memc_or7 = 0xFFFF8726;
memctl->memc_br7 = 0x50000401; /* start at 0x50000000 */
/* BP 14 low = USB ON */
immap->im_cpm.cp_pbdat &= ~(BP_USB_VCC);
/* PB 14 nomal port */
immap->im_cpm.cp_pbpar &= ~(BP_USB_VCC);
/* output */
immap->im_cpm.cp_pbdir |= (BP_USB_VCC);
puts ("USB: ");
for (i = 0x10; i < 0xff; i++) {
sl811_write(i, i);
tmp = (sl811_read(i));
if (tmp != i) {
printf ("SL811 compare error index=0x%02x read=0x%02x\n", i, tmp);
return (-1);
}
}
printf ("SL811 ready\n");
return (0);
}
/*
* This function resets SL811HS controller and detects the speed of
* the connecting device
*
* Return: 0 = no device attached; 1 = USB device attached
*/
static int sl811_hc_reset(void)
{
int status ;
sl811_write(SL811_CTRL2, SL811_CTL2_HOST | SL811_12M_HI);
sl811_write(SL811_CTRL1, SL811_CTRL1_RESET);
mdelay(20);
/* Disable hardware SOF generation, clear all irq status. */
sl811_write(SL811_CTRL1, 0);
mdelay(2);
sl811_write(SL811_INTRSTS, 0xff);
status = sl811_read(SL811_INTRSTS);
if (status & SL811_INTR_NOTPRESENT) {
/* Device is not present */
PDEBUG(0, "Device not present\n");
rh_status.wPortStatus &= ~(USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE);
rh_status.wPortChange |= USB_PORT_STAT_C_CONNECTION;
sl811_write(SL811_INTR, SL811_INTR_INSRMV);
return 0;
}
/* Send SOF to address 0, endpoint 0. */
sl811_write(SL811_LEN_B, 0);
sl811_write(SL811_PIDEP_B, PIDEP(USB_PID_SOF, 0));
sl811_write(SL811_DEV_B, 0x00);
sl811_write(SL811_SOFLOW, SL811_12M_LOW);
if (status & SL811_INTR_SPEED_FULL) {
/* full speed device connect directly to root hub */
PDEBUG (0, "Full speed Device attached\n");
sl811_write(SL811_CTRL1, SL811_CTRL1_RESET);
mdelay(20);
sl811_write(SL811_CTRL2, SL811_CTL2_HOST | SL811_12M_HI);
sl811_write(SL811_CTRL1, SL811_CTRL1_SOF);
/* start the SOF or EOP */
sl811_write(SL811_CTRL_B, SL811_USB_CTRL_ARM);
rh_status.wPortStatus |= USB_PORT_STAT_CONNECTION;
rh_status.wPortStatus &= ~USB_PORT_STAT_LOW_SPEED;
mdelay(2);
sl811_write(SL811_INTRSTS, 0xff);
} else {
/* slow speed device connect directly to root-hub */
PDEBUG(0, "Low speed Device attached\n");
sl811_write(SL811_CTRL1, SL811_CTRL1_RESET);
mdelay(20);
sl811_write(SL811_CTRL2, SL811_CTL2_HOST | SL811_CTL2_DSWAP | SL811_12M_HI);
sl811_write(SL811_CTRL1, SL811_CTRL1_SPEED_LOW | SL811_CTRL1_SOF);
/* start the SOF or EOP */
sl811_write(SL811_CTRL_B, SL811_USB_CTRL_ARM);
rh_status.wPortStatus |= USB_PORT_STAT_CONNECTION | USB_PORT_STAT_LOW_SPEED;
mdelay(2);
sl811_write(SL811_INTRSTS, 0xff);
}
rh_status.wPortChange |= USB_PORT_STAT_C_CONNECTION;
sl811_write(SL811_INTR, /*SL811_INTR_INSRMV*/SL811_INTR_DONE_A);
return 1;
}
int usb_lowlevel_init(void)
{
root_hub_devnum = 0;
sl811_hc_reset();
return 0;
}
int usb_lowlevel_stop(void)
{
sl811_hc_reset();
return 0;
}
static int calc_needed_buswidth(int bytes, int need_preamble)
{
return !need_preamble ? bytes * 8 + 256 : 8 * 8 * bytes + 2048;
}
static int sl811_send_packet(struct usb_device *dev, unsigned long pipe, __u8 *buffer, int len)
{
__u8 ctrl = SL811_USB_CTRL_ARM | SL811_USB_CTRL_ENABLE;
__u16 status = 0;
int err = 0, time_start = get_timer(0);
int need_preamble = !(rh_status.wPortStatus & USB_PORT_STAT_LOW_SPEED) &&
usb_pipeslow(pipe);
if (len > 239)
return -1;
if (usb_pipeout(pipe))
ctrl |= SL811_USB_CTRL_DIR_OUT;
if (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)))
ctrl |= SL811_USB_CTRL_TOGGLE_1;
if (need_preamble)
ctrl |= SL811_USB_CTRL_PREAMBLE;
sl811_write(SL811_INTRSTS, 0xff);
while (err < 3) {
sl811_write(SL811_ADDR_A, 0x10);
sl811_write(SL811_LEN_A, len);
if (usb_pipeout(pipe) && len)
sl811_write_buf(0x10, buffer, len);
if (!(rh_status.wPortStatus & USB_PORT_STAT_LOW_SPEED) &&
sl811_read(SL811_SOFCNTDIV)*64 < calc_needed_buswidth(len, need_preamble))
ctrl |= SL811_USB_CTRL_SOF;
else
ctrl &= ~SL811_USB_CTRL_SOF;
sl811_write(SL811_CTRL_A, ctrl);
while (!(sl811_read(SL811_INTRSTS) & SL811_INTR_DONE_A)) {
if (5*CONFIG_SYS_HZ < get_timer(time_start)) {
printf("USB transmit timed out\n");
return -USB_ST_CRC_ERR;
}
}
sl811_write(SL811_INTRSTS, 0xff);
status = sl811_read(SL811_STS_A);
if (status & SL811_USB_STS_ACK) {
int remainder = sl811_read(SL811_CNT_A);
if (remainder) {
PDEBUG(0, "usb transfer remainder = %d\n", remainder);
len -= remainder;
}
if (usb_pipein(pipe) && len)
sl811_read_buf(0x10, buffer, len);
return len;
}
if ((status & SL811_USB_STS_NAK) == SL811_USB_STS_NAK)
continue;
PDEBUG(0, "usb transfer error %#x\n", (int)status);
err++;
}
err = 0;
if (status & SL811_USB_STS_ERROR)
err |= USB_ST_BUF_ERR;
if (status & SL811_USB_STS_TIMEOUT)
err |= USB_ST_CRC_ERR;
if (status & SL811_USB_STS_STALL)
err |= USB_ST_STALLED;
return -err;
}
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int len)
{
int dir_out = usb_pipeout(pipe);
int ep = usb_pipeendpoint(pipe);
int max = usb_maxpacket(dev, pipe);
int done = 0;
PDEBUG(7, "dev = %ld pipe = %ld buf = %p size = %d dir_out = %d\n",
usb_pipedevice(pipe), usb_pipeendpoint(pipe), buffer, len, dir_out);
dev->status = 0;
sl811_write(SL811_DEV_A, usb_pipedevice(pipe));
sl811_write(SL811_PIDEP_A, PIDEP(!dir_out ? USB_PID_IN : USB_PID_OUT, ep));
while (done < len) {
int res = sl811_send_packet(dev, pipe, (__u8*)buffer+done,
max > len - done ? len - done : max);
if (res < 0) {
dev->status = -res;
return res;
}
if (!dir_out && res < max) /* short packet */
break;
done += res;
usb_dotoggle(dev, ep, dir_out);
}
dev->act_len = done;
return 0;
}
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int len,struct devrequest *setup)
{
int done = 0;
int devnum = usb_pipedevice(pipe);
int ep = usb_pipeendpoint(pipe);
dev->status = 0;
if (devnum == root_hub_devnum)
return sl811_rh_submit_urb(dev, pipe, buffer, len, setup);
PDEBUG(7, "dev = %d pipe = %ld buf = %p size = %d rt = %#x req = %#x bus = %i\n",
devnum, ep, buffer, len, (int)setup->requesttype,
(int)setup->request, sl811_read(SL811_SOFCNTDIV)*64);
sl811_write(SL811_DEV_A, devnum);
sl811_write(SL811_PIDEP_A, PIDEP(USB_PID_SETUP, ep));
/* setup phase */
usb_settoggle(dev, ep, 1, 0);
if (sl811_send_packet(dev, usb_sndctrlpipe(dev, ep),
(__u8*)setup, sizeof(*setup)) == sizeof(*setup)) {
int dir_in = usb_pipein(pipe);
int max = usb_maxpacket(dev, pipe);
/* data phase */
sl811_write(SL811_PIDEP_A,
PIDEP(dir_in ? USB_PID_IN : USB_PID_OUT, ep));
usb_settoggle(dev, ep, usb_pipeout(pipe), 1);
while (done < len) {
int res = sl811_send_packet(dev, pipe, (__u8*)buffer+done,
max > len - done ? len - done : max);
if (res < 0) {
PDEBUG(0, "status data failed!\n");
dev->status = -res;
return 0;
}
done += res;
usb_dotoggle(dev, ep, usb_pipeout(pipe));
if (dir_in && res < max) /* short packet */
break;
}
/* status phase */
sl811_write(SL811_PIDEP_A,
PIDEP(!dir_in ? USB_PID_IN : USB_PID_OUT, ep));
usb_settoggle(dev, ep, !usb_pipeout(pipe), 1);
if (sl811_send_packet(dev,
!dir_in ? usb_rcvctrlpipe(dev, ep) :
usb_sndctrlpipe(dev, ep),
0, 0) < 0) {
PDEBUG(0, "status phase failed!\n");
dev->status = -1;
}
} else {
PDEBUG(0, "setup phase failed!\n");
dev->status = -1;
}
dev->act_len = done;
return done;
}
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int len, int interval)
{
PDEBUG(0, "dev = %p pipe = %#lx buf = %p size = %d int = %d\n", dev, pipe,
buffer, len, interval);
return -1;
}
/*
* SL811 Virtual Root Hub
*/
/* Device descriptor */
static __u8 sl811_rh_dev_des[] =
{
0x12, /* __u8 bLength; */
0x01, /* __u8 bDescriptorType; Device */
0x10, /* __u16 bcdUSB; v1.1 */
0x01,
0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
0x00, /* __u8 bDeviceSubClass; */
0x00, /* __u8 bDeviceProtocol; */
0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
0x00, /* __u16 idVendor; */
0x00,
0x00, /* __u16 idProduct; */
0x00,
0x00, /* __u16 bcdDevice; */
0x00,
0x00, /* __u8 iManufacturer; */
0x02, /* __u8 iProduct; */
0x01, /* __u8 iSerialNumber; */
0x01 /* __u8 bNumConfigurations; */
};
/* Configuration descriptor */
static __u8 sl811_rh_config_des[] =
{
0x09, /* __u8 bLength; */
0x02, /* __u8 bDescriptorType; Configuration */
0x19, /* __u16 wTotalLength; */
0x00,
0x01, /* __u8 bNumInterfaces; */
0x01, /* __u8 bConfigurationValue; */
0x00, /* __u8 iConfiguration; */
0x40, /* __u8 bmAttributes;
Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup,
4..0: resvd */
0x00, /* __u8 MaxPower; */
/* interface */
0x09, /* __u8 if_bLength; */
0x04, /* __u8 if_bDescriptorType; Interface */
0x00, /* __u8 if_bInterfaceNumber; */
0x00, /* __u8 if_bAlternateSetting; */
0x01, /* __u8 if_bNumEndpoints; */
0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
0x00, /* __u8 if_bInterfaceSubClass; */
0x00, /* __u8 if_bInterfaceProtocol; */
0x00, /* __u8 if_iInterface; */
/* endpoint */
0x07, /* __u8 ep_bLength; */
0x05, /* __u8 ep_bDescriptorType; Endpoint */
0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
0x03, /* __u8 ep_bmAttributes; Interrupt */
0x08, /* __u16 ep_wMaxPacketSize; */
0x00,
0xff /* __u8 ep_bInterval; 255 ms */
};
/* root hub class descriptor*/
static __u8 sl811_rh_hub_des[] =
{
0x09, /* __u8 bLength; */
0x29, /* __u8 bDescriptorType; Hub-descriptor */
0x01, /* __u8 bNbrPorts; */
0x00, /* __u16 wHubCharacteristics; */
0x00,
0x50, /* __u8 bPwrOn2pwrGood; 2ms */
0x00, /* __u8 bHubContrCurrent; 0 mA */
0xfc, /* __u8 DeviceRemovable; *** 7 Ports max *** */
0xff /* __u8 PortPwrCtrlMask; *** 7 ports max *** */
};
/*
* helper routine for returning string descriptors in UTF-16LE
* input can actually be ISO-8859-1; ASCII is its 7-bit subset
*/
static int ascii2utf (char *s, u8 *utf, int utfmax)
{
int retval;
for (retval = 0; *s && utfmax > 1; utfmax -= 2, retval += 2) {
*utf++ = *s++;
*utf++ = 0;
}
return retval;
}
/*
* root_hub_string is used by each host controller's root hub code,
* so that they're identified consistently throughout the system.
*/
static int usb_root_hub_string (int id, int serial, char *type, __u8 *data, int len)
{
char buf [30];
/* assert (len > (2 * (sizeof (buf) + 1)));
assert (strlen (type) <= 8);*/
/* language ids */
if (id == 0) {
*data++ = 4; *data++ = 3; /* 4 bytes data */
*data++ = 0; *data++ = 0; /* some language id */
return 4;
/* serial number */
} else if (id == 1) {
sprintf (buf, "%#x", serial);
/* product description */
} else if (id == 2) {
sprintf (buf, "USB %s Root Hub", type);
/* id 3 == vendor description */
/* unsupported IDs --> "stall" */
} else
return 0;
ascii2utf (buf, data + 2, len - 2);
data [0] = 2 + strlen(buf) * 2;
data [1] = 3;
return data [0];
}
/* helper macro */
#define OK(x) len = (x); break
/*
* This function handles all USB request to the the virtual root hub
*/
static int sl811_rh_submit_urb(struct usb_device *usb_dev, unsigned long pipe,
void *data, int buf_len, struct devrequest *cmd)
{
__u8 data_buf[16];
__u8 *bufp = data_buf;
int len = 0;
int status = 0;
__u16 bmRType_bReq;
__u16 wValue;
__u16 wIndex;
__u16 wLength;
if (usb_pipeint(pipe)) {
PDEBUG(0, "interrupt transfer unimplemented!\n");
return 0;
}
bmRType_bReq = cmd->requesttype | (cmd->request << 8);
wValue = le16_to_cpu (cmd->value);
wIndex = le16_to_cpu (cmd->index);
wLength = le16_to_cpu (cmd->length);
PDEBUG(5, "submit rh urb, req = %d(%x) val = %#x index = %#x len=%d\n",
bmRType_bReq, bmRType_bReq, wValue, wIndex, wLength);
/* Request Destination:
without flags: Device,
USB_RECIP_INTERFACE: interface,
USB_RECIP_ENDPOINT: endpoint,
USB_TYPE_CLASS means HUB here,
USB_RECIP_OTHER | USB_TYPE_CLASS almost ever means HUB_PORT here
*/
switch (bmRType_bReq) {
case RH_GET_STATUS:
*(__u16 *)bufp = cpu_to_le16(1);
OK(2);
case RH_GET_STATUS | USB_RECIP_INTERFACE:
*(__u16 *)bufp = cpu_to_le16(0);
OK(2);
case RH_GET_STATUS | USB_RECIP_ENDPOINT:
*(__u16 *)bufp = cpu_to_le16(0);
OK(2);
case RH_GET_STATUS | USB_TYPE_CLASS:
*(__u32 *)bufp = cpu_to_le32(0);
OK(4);
case RH_GET_STATUS | USB_RECIP_OTHER | USB_TYPE_CLASS:
*(__u32 *)bufp = cpu_to_le32(rh_status.wPortChange<<16 | rh_status.wPortStatus);
OK(4);
case RH_CLEAR_FEATURE | USB_RECIP_ENDPOINT:
switch (wValue) {
case 1:
OK(0);
}
break;
case RH_CLEAR_FEATURE | USB_TYPE_CLASS:
switch (wValue) {
case C_HUB_LOCAL_POWER:
OK(0);
case C_HUB_OVER_CURRENT:
OK(0);
}
break;
case RH_CLEAR_FEATURE | USB_RECIP_OTHER | USB_TYPE_CLASS:
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
rh_status.wPortStatus &= ~USB_PORT_STAT_ENABLE;
OK(0);
case USB_PORT_FEAT_SUSPEND:
rh_status.wPortStatus &= ~USB_PORT_STAT_SUSPEND;
OK(0);
case USB_PORT_FEAT_POWER:
rh_status.wPortStatus &= ~USB_PORT_STAT_POWER;
OK(0);
case USB_PORT_FEAT_C_CONNECTION:
rh_status.wPortChange &= ~USB_PORT_STAT_C_CONNECTION;
OK(0);
case USB_PORT_FEAT_C_ENABLE:
rh_status.wPortChange &= ~USB_PORT_STAT_C_ENABLE;
OK(0);
case USB_PORT_FEAT_C_SUSPEND:
rh_status.wPortChange &= ~USB_PORT_STAT_C_SUSPEND;
OK(0);
case USB_PORT_FEAT_C_OVER_CURRENT:
rh_status.wPortChange &= ~USB_PORT_STAT_C_OVERCURRENT;
OK(0);
case USB_PORT_FEAT_C_RESET:
rh_status.wPortChange &= ~USB_PORT_STAT_C_RESET;
OK(0);
}
break;
case RH_SET_FEATURE | USB_RECIP_OTHER | USB_TYPE_CLASS:
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
rh_status.wPortStatus |= USB_PORT_STAT_SUSPEND;
OK(0);
case USB_PORT_FEAT_RESET:
rh_status.wPortStatus |= USB_PORT_STAT_RESET;
rh_status.wPortChange = 0;
rh_status.wPortChange |= USB_PORT_STAT_C_RESET;
rh_status.wPortStatus &= ~USB_PORT_STAT_RESET;
rh_status.wPortStatus |= USB_PORT_STAT_ENABLE;
OK(0);
case USB_PORT_FEAT_POWER:
rh_status.wPortStatus |= USB_PORT_STAT_POWER;
OK(0);
case USB_PORT_FEAT_ENABLE:
rh_status.wPortStatus |= USB_PORT_STAT_ENABLE;
OK(0);
}
break;
case RH_SET_ADDRESS:
root_hub_devnum = wValue;
OK(0);
case RH_GET_DESCRIPTOR:
switch ((wValue & 0xff00) >> 8) {
case USB_DT_DEVICE:
len = sizeof(sl811_rh_dev_des);
bufp = sl811_rh_dev_des;
OK(len);
case USB_DT_CONFIG:
len = sizeof(sl811_rh_config_des);
bufp = sl811_rh_config_des;
OK(len);
case USB_DT_STRING:
len = usb_root_hub_string(wValue & 0xff, (int)(long)0, "SL811HS", data, wLength);
if (len > 0) {
bufp = data;
OK(len);
}
default:
status = -32;
}
break;
case RH_GET_DESCRIPTOR | USB_TYPE_CLASS:
len = sizeof(sl811_rh_hub_des);
bufp = sl811_rh_hub_des;
OK(len);
case RH_GET_CONFIGURATION:
bufp[0] = 0x01;
OK(1);
case RH_SET_CONFIGURATION:
OK(0);
default:
PDEBUG(1, "unsupported root hub command\n");
status = -32;
}
len = min(len, buf_len);
if (data != bufp)
memcpy(data, bufp, len);
PDEBUG(5, "len = %d, status = %d\n", len, status);
usb_dev->status = status;
usb_dev->act_len = len;
return status == 0 ? len : status;
}
#endif /* CONFIG_USB_SL811HS */