From owner-svn-src-all@FreeBSD.ORG Thu Dec 20 17:14:11 2012 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id F0E90221; Thu, 20 Dec 2012 17:14:10 +0000 (UTC) (envelope-from hselasky@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) by mx1.freebsd.org (Postfix) with ESMTP id BC2608FC0A; Thu, 20 Dec 2012 17:14:10 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.5/8.14.5) with ESMTP id qBKHEAgX087379; Thu, 20 Dec 2012 17:14:10 GMT (envelope-from hselasky@svn.freebsd.org) Received: (from hselasky@localhost) by svn.freebsd.org (8.14.5/8.14.5/Submit) id qBKHEAgv087378; Thu, 20 Dec 2012 17:14:10 GMT (envelope-from hselasky@svn.freebsd.org) Message-Id: <201212201714.qBKHEAgv087378@svn.freebsd.org> From: Hans Petter Selasky Date: Thu, 20 Dec 2012 17:14:10 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r244491 - head/sys/dev/usb/storage X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Dec 2012 17:14:11 -0000 Author: hselasky Date: Thu Dec 20 17:14:10 2012 New Revision: 244491 URL: http://svnweb.freebsd.org/changeset/base/244491 Log: Add support for throttling UMASS. Mostly useful for debugging purposes. MFC after: 1 week Modified: head/sys/dev/usb/storage/umass.c Modified: head/sys/dev/usb/storage/umass.c ============================================================================== --- head/sys/dev/usb/storage/umass.c Thu Dec 20 17:13:01 2012 (r244490) +++ head/sys/dev/usb/storage/umass.c Thu Dec 20 17:14:10 2012 (r244491) @@ -163,12 +163,16 @@ __FBSDID("$FreeBSD$"); #define UDMASS_CBI 0x00400000 /* CBI transfers */ #define UDMASS_WIRE (UDMASS_BBB|UDMASS_CBI) #define UDMASS_ALL 0xffff0000 /* all of the above */ -static int umass_debug = 0; +static int umass_debug; +static int umass_throttle; static SYSCTL_NODE(_hw_usb, OID_AUTO, umass, CTLFLAG_RW, 0, "USB umass"); SYSCTL_INT(_hw_usb_umass, OID_AUTO, debug, CTLFLAG_RW | CTLFLAG_TUN, &umass_debug, 0, "umass debug level"); TUNABLE_INT("hw.usb.umass.debug", &umass_debug); +SYSCTL_INT(_hw_usb_umass, OID_AUTO, throttle, CTLFLAG_RW | CTLFLAG_TUN, + &umass_throttle, 0, "Forced delay between commands in milliseconds"); +TUNABLE_INT("hw.usb.umass.throttle", &umass_throttle); #else #define DIF(...) do { } while (0) #define DPRINTF(...) do { } while (0) @@ -881,7 +885,7 @@ umass_attach(device_t dev) struct usb_attach_arg *uaa = device_get_ivars(dev); struct umass_probe_proto temp = umass_probe_proto(dev, uaa); struct usb_interface_descriptor *id; - int32_t err; + int err; /* * NOTE: the softc struct is cleared in device_set_driver. @@ -994,6 +998,24 @@ umass_attach(device_t dev) "transfers, %s\n", usbd_errstr(err)); goto detach; } +#ifdef USB_DEBUG + if (umass_throttle > 0) { + uint8_t x; + int iv; + + iv = umass_throttle; + + if (iv < 1) + iv = 1; + else if (iv > 8000) + iv = 8000; + + for (x = 0; x != UMASS_T_MAX; x++) { + if (sc->sc_xfer[x] != NULL) + usbd_xfer_set_interval(sc->sc_xfer[x], iv); + } + } +#endif sc->sc_transform = (sc->sc_proto & UMASS_PROTO_SCSI) ? &umass_scsi_transform : (sc->sc_proto & UMASS_PROTO_UFI) ? &umass_ufi_transform :