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Merge branch 'master' of git://www.denx.de/git/u-boot-usb

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This commit is contained in:
Wolfgang Denk 2007-10-15 20:55:51 +02:00
commit 9e8362b689
1 changed files with 72 additions and 40 deletions
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108
drivers/isp116x-hcd.c
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@ -113,9 +113,9 @@ static const char hcd_name[] = "isp116x-hcd";
struct isp116x isp116x_dev;
struct isp116x_platform_data isp116x_board;
int got_rhsc = 0; /* root hub status change */
static int got_rhsc; /* root hub status change */
struct usb_device *devgone; /* device which was disconnected */
int rh_devnum = 0; /* address of Root Hub endpoint */
static int rh_devnum; /* address of Root Hub endpoint */
/* ------------------------------------------------------------------------- */
@ -522,11 +522,13 @@ static int unpack_fifo(struct isp116x *isp116x, struct usb_device *dev,
done += PTD_GET_LEN(&ptd[i]);
cc = PTD_GET_CC(&ptd[i]);
if (cc == TD_DATAUNDERRUN) { /* underrun is no error... */
DBG("allowed data underrun");
cc = TD_CC_NOERROR;
}
if (cc != TD_CC_NOERROR && ret == TD_CC_NOERROR)
/* Data underrun means basically that we had more buffer space than
* the function had data. It is perfectly normal but upper levels have
* to know how much we actually transferred.
*/
if (cc == TD_NOTACCESSED ||
(cc != TD_CC_NOERROR && (ret == TD_CC_NOERROR || ret == TD_DATAUNDERRUN)))
ret = cc;
}
@ -592,11 +594,19 @@ static int isp116x_interrupt(struct isp116x *isp116x)
return ret;
}
#define PTD_NUM 64 /* it should be enougth... */
struct ptd ptd[PTD_NUM];
/* With one PTD we can transfer almost 1K in one go;
* HC does the splitting into endpoint digestible transactions
*/
struct ptd ptd[1];
static inline int max_transfer_len(struct usb_device *dev, unsigned long pipe)
{
return min(PTD_NUM * usb_maxpacket(dev, pipe), PTD_NUM * 16);
unsigned mpck = usb_maxpacket(dev, pipe);
/* One PTD can transfer 1023 bytes but try to always
* transfer multiples of endpoint buffer size
*/
return 1023 / mpck * mpck;
}
/* Do an USB transfer
@ -610,13 +620,21 @@ static int isp116x_submit_job(struct usb_device *dev, unsigned long pipe,
int max = usb_maxpacket(dev, pipe);
int dir_out = usb_pipeout(pipe);
int speed_low = usb_pipeslow(pipe);
int i, done, stat, timeout, cc;
int retries = 10;
int i, done = 0, stat, timeout, cc;
/* 500 frames or 0.5s timeout when function is busy and NAKs transactions for a while */
int retries = 500;
DBG("------------------------------------------------");
dump_msg(dev, pipe, buffer, len, "SUBMIT");
DBG("------------------------------------------------");
if (len >= 1024) {
ERR("Too big job");
dev->status = USB_ST_CRC_ERR;
return -1;
}
if (isp116x->disabled) {
ERR("EPIPE");
dev->status = USB_ST_CRC_ERR;
@ -653,29 +671,15 @@ static int isp116x_submit_job(struct usb_device *dev, unsigned long pipe,
isp116x_write_reg32(isp116x, HCINTSTAT, 0xff);
/* Prepare the PTD data */
done = 0;
i = 0;
do {
ptd[i].count = PTD_CC_MSK | PTD_ACTIVE_MSK |
ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK |
PTD_TOGGLE(usb_gettoggle(dev, epnum, dir_out));
ptd[i].mps = PTD_MPS(max) | PTD_SPD(speed_low) | PTD_EP(epnum);
ptd[i].len = PTD_LEN(max > len - done ? len - done : max) |
PTD_DIR(dir);
ptd[i].faddr = PTD_FA(usb_pipedevice(pipe));
usb_dotoggle(dev, epnum, dir_out);
done += PTD_GET_LEN(&ptd[i]);
i++;
if (i >= PTD_NUM) {
ERR("****** Cannot pack buffer! ******");
dev->status = USB_ST_BUF_ERR;
return -1;
}
} while (done < len);
ptd[i - 1].mps |= PTD_LAST_MSK;
ptd->mps = PTD_MPS(max) | PTD_SPD(speed_low) | PTD_EP(epnum) | PTD_LAST_MSK;
ptd->len = PTD_LEN(len) | PTD_DIR(dir);
ptd->faddr = PTD_FA(usb_pipedevice(pipe));
retry_same:
/* Pack data into FIFO ram */
pack_fifo(isp116x, dev, pipe, ptd, i, buffer, len);
pack_fifo(isp116x, dev, pipe, ptd, 1, buffer, len);
#ifdef EXTRA_DELAY
wait_ms(EXTRA_DELAY);
#endif
@ -738,17 +742,42 @@ static int isp116x_submit_job(struct usb_device *dev, unsigned long pipe,
}
/* Unpack data from FIFO ram */
cc = unpack_fifo(isp116x, dev, pipe, ptd, i, buffer, len);
cc = unpack_fifo(isp116x, dev, pipe, ptd, 1, buffer, len);
/* Mmm... sometime we get 0x0f as cc which is a non sense!
* Just retry the transfer...
i = PTD_GET_COUNT(ptd);
done += i;
buffer += i;
len -= i;
/* There was some kind of real problem; Prepare the PTD again
* and retry from the failed transaction on
*/
if (cc == 0x0f && retries-- > 0) {
usb_dotoggle(dev, epnum, dir_out);
if (cc && cc != TD_NOTACCESSED && cc != TD_DATAUNDERRUN) {
if (retries >= 100) {
retries -= 100;
/* The chip will have toggled the toggle bit for the failed
* transaction too. We have to toggle it back.
*/
usb_settoggle(dev, epnum, dir_out, !PTD_GET_TOGGLE(ptd));
goto retry;
}
}
/* "Normal" errors; TD_NOTACCESSED would mean in effect that the function have NAKed
* the transactions from the first on for the whole frame. It may be busy and we retry
* with the same PTD. PTD_ACTIVE (and not TD_NOTACCESSED) would mean that some of the
* PTD didn't make it because the function was busy or the frame ended before the PTD
* finished. We prepare the rest of the data and try again.
*/
else if (cc == TD_NOTACCESSED || PTD_GET_ACTIVE(ptd) || (cc != TD_DATAUNDERRUN && PTD_GET_COUNT(ptd) < PTD_GET_LEN(ptd))) {
if (retries) {
--retries;
if (cc == TD_NOTACCESSED && PTD_GET_ACTIVE(ptd) && !PTD_GET_COUNT(ptd)) goto retry_same;
usb_settoggle(dev, epnum, dir_out, PTD_GET_TOGGLE(ptd));
goto retry;
}
}
if (cc != TD_CC_NOERROR) {
if (cc != TD_CC_NOERROR && cc != TD_DATAUNDERRUN) {
DBG("****** completition code error %x ******", cc);
switch (cc) {
case TD_CC_BITSTUFFING:
@ -766,6 +795,7 @@ static int isp116x_submit_job(struct usb_device *dev, unsigned long pipe,
}
return -cc;
}
else usb_settoggle(dev, epnum, dir_out, PTD_GET_TOGGLE(ptd));
dump_msg(dev, pipe, buffer, len, "SUBMIT(ret)");
@ -1369,6 +1399,8 @@ int usb_lowlevel_init(void)
DBG("");
got_rhsc = rh_devnum = 0;
/* Init device registers addr */
isp116x->addr_reg = (u16 *) ISP116X_HCD_ADDR;
isp116x->data_reg = (u16 *) ISP116X_HCD_DATA;