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| author | Gerd Hoffmann <kraxel@redhat.com> | 2016-09-27 10:32:48 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2016-10-12 12:37:31 +0200 |
| commit | 94b037f2a451b3dc855f9f2c346e5049a361bd55 (patch) | |
| tree | 393fd9925b78a355d507cbf194fa5538f2d217c2 /target-tricore/cpu.h | |
| parent | 7512b13dd7f77c3e93a5b856eddf78378bddcc7f (diff) | |
xhci: use linked list for transfers
xhci has a fixed number of 24 (TD_QUEUE) XHCITransfer structs per
endpoint, which turns out to be a problem for usb3 devices with 32 (or
more) bulk streams. xhci re-checks the trb rings on every finished
transfer to make sure it'll pick up any pending work. But that scheme
breaks in case the first transfer of a ring can't be started because we
ran out of XHCITransfer structs already.
So remove static XHCITransfer array from XHCIEPContext. Use a linked
list instead, and allocate/free XHCITransfer as needed. Add helper
functions to allocate & initialize and to cleanup & release
XHCITransfer structs. That also simplifies trb management, we never
have to realloc XHCITransfer->trbs because we don't reuse XHCITransfer
structs any more.
New dynamic limit for in-flight xhci transfers per endpoint is
number-of-streams + 16.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1474965172-30321-5-git-send-email-kraxel@redhat.com
Diffstat (limited to 'target-tricore/cpu.h')
0 files changed, 0 insertions, 0 deletions