From ce0da37e7d071995cc8533b668360082f78cb329 Mon Sep 17 00:00:00 2001 From: hselasky Date: Sun, 12 Aug 2012 17:53:06 +0000 Subject: Add support for the so-called streams feature of BULK endpoints in SUPER-speed mode, USB 3.0. This feature has not been tested yet, due to lack of hardware. This feature is useful when implementing protocols like UASP, USB attached SCSI which promises higher USB mass storage throughput. This patch also implements support for hardware processing of endpoints for increased performance. The switching to hardware processing of an endpoint is done via a callback to the USB controller driver. The stream feature is implemented like a variant of a hardware USB protocol. USB controller drivers implementing device mode needs to be updated to implement the new "xfer_stall" USB controller method and remove the "xfer" argument from the "set_stall" method. The API's toward existing USB drivers are preserved. To setup a USB transfer in stream mode, set the "stream_id" field of the USB config structure to the desired value. The maximum number of BULK streams is currently hardcoded and limited to 8 via a define in usb_freebsd.h. All USB drivers should be re-compiled after this change. LibUSB will be updated next week to support streams mode. A new IOCTL to setup BULK streams as already been implemented. The ugen device nodes currently only supports stream ID zero. The FreeBSD version has been bumped. MFC after: 2 weeks --- sys/dev/usb/usb_debug.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'sys/dev/usb/usb_debug.c') diff --git a/sys/dev/usb/usb_debug.c b/sys/dev/usb/usb_debug.c index a39d400..ae0db7f 100644 --- a/sys/dev/usb/usb_debug.c +++ b/sys/dev/usb/usb_debug.c @@ -113,10 +113,12 @@ void usb_dump_queue(struct usb_endpoint *ep) { struct usb_xfer *xfer; + usb_stream_t x; printf("usb_dump_queue: endpoint=%p xfer: ", ep); - TAILQ_FOREACH(xfer, &ep->endpoint_q.head, wait_entry) { - printf(" %p", xfer); + for (x = 0; x != USB_MAX_EP_STREAMS; x++) { + TAILQ_FOREACH(xfer, &ep->endpoint_q[x].head, wait_entry) + printf(" %p", xfer); } printf("\n"); } -- cgit v1.1