OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

xhci: generate a Transfer Event for each Transfer TRB with the IOC bit set

Browse Source 
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABAgAGBQJU9WUDAAoJEEy22O7T6HE4oj4QALvuVh+ZBk9WMRs+6+e/hNwl
 EQwx3+yy1A4eB/XetCdBOT6Besk1t4snDXqw3GwCVXbRzCNOyNn+ptynDvIOMxqH
 2juKCB91yhSrgGUqx/sU3iNe9PjUE+g5MZE3BBgmjgKSNlqULP1lSKmRNfdYGH+3
 vLF2P0Qtv7AHCN+eRLZJGCD3xxaE0QAU9t77OoTyYS6KRFinAaOiU6FBTLH11xVW
 LPWU3iVY7SuE7PT8EsmAwr2Gizt/pztRSOViIqba6UxUhrRM8zjMfi7bKC+NqIP6
 aeCAoQExCvs7tVBQ/N4+NLmYzbhRdyCNxMVmWFOnF37FH9aRMZRypc0dxvEksW8p
 HsRBNXWiuQyAtdOPiaQ/XBFKzpUjFo6s6GBtPMGkXRA/6puEvzIUQZmFbWfFpkVr
 Ippj3vMTgJv9IE1wzExv9inamzko+kWPI8JQBuMN7XvNpKAMHyGmIKniNDMZaqNA
 /iFMFJXLwTNTO/oYLkHCttgfty50ktZ1wvlZnbKt4zV89Qw2lOaeGiFIgJdUcMHN
 54ssxDaoECMFiRlhqmraUg5HgjHTc5Bo0P/sp8G183Vp63mZS52/KRldvqmrM8jK
 ZpvEmbwpGzZsHsDEszInvJTUX6QTE6rSvwMJdfoy9tVWsyIGMJDiyJXotVZZZepz
 OTr6WkRo9KpYNRafuuG7
 =+CKl
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20150303-1' into staging

xhci: generate a Transfer Event for each Transfer TRB with the IOC bit set

# gpg: Signature made Tue Mar  3 07:38:43 2015 GMT using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-usb-20150303-1:
  xhci: generate a Transfer Event for each Transfer TRB with the IOC bit set

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2015-03-08 07:33:45 +00:00
commit b6d527fbc0
1 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
hw/usb/hcd-xhci.c
View File

@ -1767,9 +1767,18 @@ static void xhci_xfer_report(XHCITransfer *xfer)
break;
}
if (!reported && ((trb->control & TRB_TR_IOC) ||
(shortpkt && (trb->control & TRB_TR_ISP)) ||
(xfer->status != CC_SUCCESS && left == 0))) {
/*
* XHCI 1.1, 4.11.3.1 Transfer Event TRB -- "each Transfer TRB
* encountered with its IOC flag set to '1' shall generate a Transfer
* Event."
*
* Otherwise, longer transfers can have multiple data TRBs (for scatter
* gather). Short transfers and errors should be reported once per
* transfer only.
*/
if ((trb->control & TRB_TR_IOC) ||
(!reported && ((shortpkt && (trb->control & TRB_TR_ISP)) ||
(xfer->status != CC_SUCCESS && left == 0)))) {
event.slotid = xfer->slotid;
event.epid = xfer->epid;
event.length = (trb->status & 0x1ffff) - chunk;