Commit graph

3 commits

Author SHA1 Message Date
Daniel Verkamp
3bebfa29dc usb: reset backend device on port reset
This enables the full firmware update/reset/use device in application
mode sequence for Edge TPU USB Accelerator.

There is a bit of a UI hiccup: once the firmware update and reset is
complete, the device re-enumerates with a different VID/PID, and the
"Connect to Linux" prompt shows up again.  The user must re-affirm that
the device should be connected to Linux to proceed with using the Edge
TPU.  This may be unavoidable - I'm not sure if we can tell the
difference between a newly-inserted device and a reset one.

Allowing USBDEVFS_DISCONNECT_CLAIM should be safe, since it can only
operate on file descriptors passed into the xhci device jail.

BUG=chromium:831850
TEST=Run Edge TPU Accelerator demo and verify that it can update FW

Change-Id: I3d61c7bd914830ce25448b1ae4d60e1c16f10aed
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1599881
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
2019-06-05 19:19:10 +00:00
Jingkui Wang
e23231ccff usb: fix serial devices by removing device context verification
1. Removed for device slot reset and evaluate context. The verification was
   unnecessary and may cause some guest kernel operations to fail.
2. The context was updated after dequeue pointer set
3. Reset device when it's attached.
4. Add seccomp rules to allow the above reset.

The verification was copied from another implementation which works for
adb, but does not work with serial devices. The verification is also not
part of the spec, so we removed it here.

BUG=b:131336977
TEST=local build and test

Change-Id: Ifd7994ff5512346d1bab27654e60c97a602da8a6
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Signed-off-by: Zach Reizner <zachr@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1558934
Tested-by: kokoro <noreply+kokoro@google.com>
2019-05-01 01:50:22 -07:00
Jingkui Wang
100e6e48ad implement xhci and add it to pci bus
Implement xhci controller, setup seccomp filters and add xhci to pci
bus.

CQ-DEPEND=CL:1512761
BUG=chromium:831850
TEST=local build
Change-Id: I5c05452ece66e99d3a670e259e095fca616e835d
Reviewed-on: https://chromium-review.googlesource.com/1512762
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Reviewed-by: Jingkui Wang <jkwang@google.com>
2019-03-17 21:33:08 -07:00