FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=stable%2F9 2020-06-09T22:15:45Z 2020-06-09T22:15:45Z Hans Petter Selasky hselasky@FreeBSD.org 2020-06-09T22:15:45Z urn:sha1:adbe94a5773e71d863c94185977f43d26f6edde8 This is a direct commit. Sponsored by: Mellanox Technologies 2020-06-08T09:29:08Z Hans Petter Selasky hselasky@FreeBSD.org 2020-06-08T09:29:08Z urn:sha1:a8de87d5760d344fb9c63ea8f08ecb68a4d91294 Implement helper function, usbd_get_max_frame_length(), which allows kernel device drivers to correctly predict the default USB transfer frame length. Sponsored by: Mellanox Technologies 2016-09-12T10:20:44Z Hans Petter Selasky hselasky@FreeBSD.org 2016-09-12T10:20:44Z urn:sha1:7ad0de4a4871c7e6a4b2fc04f3da8069468fec60 Resolve deadlock between device_detach() and usbd_do_request_flags() by reviving the SX control request lock and refining which lock protects the common scratch area in "struct usb_device". The SX control request lock was removed by r246759 because it caused a lock order reversal with the USB enumeration lock inside usbd_transfer_setup() as a function of r246616. It was thought that reducing the number of locks would resolve the LOR, but because some USB device drivers use usbd_do_request_flags() inside callback functions, like in taskqueues, a deadlock may occur when these are drained from device_detach(). By restoring the SX control request lock usbd_do_request_flags() is allowed to complete its execution when a USB device driver is detaching. By using the SX control request lock to protect the scratch area, the LOR introduced by r246616 is also resolved. Bump the FreeBSD version while at it to force recompilation of all USB kernel modules. Found by: avos@ 2015-08-29T06:17:39Z Hans Petter Selasky hselasky@FreeBSD.org 2015-08-29T06:17:39Z urn:sha1:6f1d9f70305f30eca4005a7f9d6a64dfdda1f63a Fix race in USB PF which can happen if we stop tracing exactly when the kernel is tapping an USB transfer. This leads to a NULL pointer access. The solution is to only trace while the USB bus lock is locked. 2015-02-10T13:18:48Z Hans Petter Selasky hselasky@FreeBSD.org 2015-02-10T13:18:48Z urn:sha1:1568a8916a194b3c8c36f68f6049705cdb3a6fdb Section 3.2.9 in the XHCI specification about control transfers says that we should use a normal-TRB if there are more TRBs extending the data-stage TRB. Add a dedicated state bit to the internal USB transfer flags to handle this case. 2015-02-05T20:15:42Z Hans Petter Selasky hselasky@FreeBSD.org 2015-02-05T20:15:42Z urn:sha1:d256fef9e0e95102094b7f6d2a1dac3ec978cfb9 Add 64-bit DMA support in the XHCI controller driver. - Fix some comments and whitespaces while at it. - Add support for PAE. 2014-03-22T17:20:10Z Hans Petter Selasky hselasky@FreeBSD.org 2014-03-22T17:20:10Z urn:sha1:108e515ccd6e9e21905b3c5d6819eb3be26b7e9b Workaround for USB MIDI adapters which use non-supported values of wMaxPacketSize for BULK endpoints. 2014-02-04T08:44:33Z Hans Petter Selasky hselasky@FreeBSD.org 2014-02-04T08:44:33Z urn:sha1:efc58f195f88f66460551a08194f389e64754cd3 Adjust the DMA delay logic so that the DMA delay does not become too small. 2014-01-24T07:57:21Z Hans Petter Selasky hselasky@FreeBSD.org 2014-01-24T07:57:21Z urn:sha1:bd015f51e340a97f8ce4fef518f6febfd69cbe9e - Separate I/O errors from reception of STALL PID. - Implement better error recovery for Transaction Translators, TTs, found in High Speed USB HUBs which translate from High Speed USB into FULL or LOW speed USB. In some rare cases SPLIT transactions might get lost, which might leave the TT in an unknown state. Whenever we detect such an error try to issue either a clear TT buffer request, or if that is not possible reset the whole TT. 2013-02-21T07:48:07Z Hans Petter Selasky hselasky@FreeBSD.org 2013-02-21T07:48:07Z urn:sha1:4b98c206999a3a320d294c6d2d48072902224251 - Move scratch data from the USB bus structure to the USB device structure so that simultaneous access cannot happen. Protect scratch area using the enumeration lock. - Reduce stack usage in usbd_transfer_setup() by moving some big stack members to the scratch area. This saves around 200 bytes of stack. - Fix a whitespace. - Protect control requests using the USB device enumeration lock. - Make sure all callers of usbd_enum_lock() check the return value. - Remove the control transfer specific lock. - Bump the FreeBSD version number, hence external USB modules may need to be recompiled due to a USB device structure change.