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Optimise EHCI ISOC HS done check.

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Submitted by:	Hans Petter Selasky
This commit is contained in:
thompsa 2010-01-29 01:30:13 +00:00
parent 2847cf1bd5
commit 57e5f62185
1 changed files with 7 additions and 10 deletions
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17
sys/dev/usb/controller/ehci.c
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@ -1340,25 +1340,22 @@ ehci_check_transfer(struct usb_xfer *xfer)
}
} else if (methods == &ehci_device_isoc_hs_methods) {
ehci_itd_t *td;
uint8_t n = (xfer->nframes & 7);
/* isochronous high speed transfer */
/* check last transfer */
td = xfer->td_transfer_last;
usb_pc_cpu_invalidate(td->page_cache);
status =
td->itd_status[0] | td->itd_status[1] |
td->itd_status[2] | td->itd_status[3] |
td->itd_status[4] | td->itd_status[5] |
td->itd_status[6] | td->itd_status[7];
if (n == 0)
status = td->itd_status[7];
else
status = td->itd_status[n-1];
/* also check first transfer */
td = xfer->td_transfer_first;
usb_pc_cpu_invalidate(td->page_cache);
status |=
td->itd_status[0] | td->itd_status[1] |
td->itd_status[2] | td->itd_status[3] |
td->itd_status[4] | td->itd_status[5] |
td->itd_status[6] | td->itd_status[7];
status |= td->itd_status[0];
/* if no transactions are active we continue */
if (!(status & htohc32(sc, EHCI_ITD_ACTIVE))) {