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Fix handling of low-speed devices with SL811 USB controller (again).

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This commit is contained in:
wdenk 2004-05-12 13:20:19 +00:00
parent 9d9e283790
commit 953e2062c0
1 changed files with 41 additions and 33 deletions
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74
drivers/sl811_usb.c
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@ -226,42 +226,46 @@ int usb_lowlevel_stop(void)
return 0;
}
static int calc_needed_buswidth(int bytes, int low_speed)
static int calc_needed_buswidth(int bytes, int need_preamble)
{
return low_speed ? 0 : bytes * 8 + 512;
return !need_preamble ? bytes * 8 + 256 : 8 * 8 * bytes + 2048;
}
static int sl811_send_packet(int dir_to_host, int data1, __u8 *buffer, int len)
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, timeout = get_timer(0) + 5*CFG_HZ;
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 (!dir_to_host)
if (usb_pipeout(pipe))
ctrl |= SL811_USB_CTRL_DIR_OUT;
if (data1)
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 (!dir_to_host && len)
if (usb_pipeout(pipe) && len)
sl811_write_buf(0x10, buffer, len);
if (sl811_read(SL811_SOFCNTDIV)*64 <
calc_needed_buswidth(len, rh_status.wPortStatus & USB_PORT_STAT_LOW_SPEED))
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 (timeout < get_timer(0)) {
if (5*CFG_HZ < get_timer(time_start)) {
printf("USB transmit timed out\n");
return -USB_ST_CRC_ERR;
}
@ -276,7 +280,7 @@ static int sl811_send_packet(int dir_to_host, int data1, __u8 *buffer, int len)
PDEBUG(0, "usb transfer remainder = %d\n", remainder);
len -= remainder;
}
if (dir_to_host && len)
if (usb_pipein(pipe) && len)
sl811_read_buf(0x10, buffer, len);
return len;
}
@ -305,7 +309,6 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
{
int dir_out = usb_pipeout(pipe);
int ep = usb_pipeendpoint(pipe);
__u8* buf = (__u8*)buffer;
int max = usb_maxpacket(dev, pipe);
int done = 0;
@ -317,8 +320,7 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
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(!dir_out, usb_gettoggle(dev, ep, dir_out),
buf+done,
int res = sl811_send_packet(dev, pipe, (__u8*)buffer+done,
max > len - done ? len - done : max);
if (res < 0) {
dev->status = -res;
@ -342,47 +344,52 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
{
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\n",
devnum, usb_pipeendpoint(pipe), buffer, len, (int)setup->requesttype,
(int)setup->request);
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, 0));
sl811_write(SL811_PIDEP_A, PIDEP(USB_PID_SETUP, ep));
/* setup phase */
if (sl811_send_packet(0, 0, (__u8*)setup, sizeof(*setup)) == sizeof(*setup)) {
int dir_in = setup->requesttype & USB_DIR_IN;
__u8* buf = (__u8*)buffer;
int data1 = 1;
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, 0));
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(dir_in, data1, buf+done,
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;
data1 = !data1;
}
/* status phase */
sl811_write(SL811_PIDEP_A,
PIDEP(!dir_in ? USB_PID_IN : USB_PID_OUT, 0));
if (sl811_send_packet(!dir_in, 1, 0, 0) < 0) {
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;
}
@ -509,13 +516,13 @@ static int usb_root_hub_string (int id, int serial, char *type, __u8 *data, int
/* language ids */
if (id == 0) {
*data++ = 3; *data++ = 4; /* 4 bytes data */
*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);
sprintf (buf, "%#x", serial);
/* product description */
} else if (id == 2) {
@ -527,7 +534,8 @@ static int usb_root_hub_string (int id, int serial, char *type, __u8 *data, int
} else
return 0;
data [0] = 2 + ascii2utf (buf, data + 2, len - 2);
ascii2utf (buf, data + 2, len - 2);
data [0] = 2 + strlen(buf) * 2;
data [1] = 3;
return data [0];
}