Date: Sun, 23 Oct 2005 19:34:45 -0700 From: Daniel Rudy <dr2867@pacbell.net> To: ticso@cicely.de Cc: freebsd-hackers@freebsd.org Subject: Re: Accessing USB Mass Storage Device Message-ID: <435C4845.3080503@pacbell.net> In-Reply-To: <20051020110428.GC31913@cicely12.cicely.de> References: <43553287.4030907@pacbell.net> <20051018.223845.67882192.imp@bsdimp.com> <20051020110428.GC31913@cicely12.cicely.de>
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At about the time of 10/20/2005 4:04 AM, Bernd Walter stated the following: > On Tue, Oct 18, 2005 at 10:38:45PM -0600, M. Warner Losh wrote: > >>In message: <43553287.4030907@pacbell.net> >> Daniel Rudy <dr2867@pacbell.net> writes: >>: >>: When the umass driver is compiled into the kernel, and one inserts a USB >>: mass storage device, how does one access the device descriptors (serial >>: number) while the device is listed as a da device? I would perfer to >>: have the OS do all the work of accessing the hardware. >> >>The serial number can be obtained with devifo. However, since cam >>doesn't hook into the device tree, mapping da number to umass number >>can be tricky in the arbitrary case. >> >>devinfo -v | grep umass >> umass0 pnpinfo vendor=0x054c product=0x014d devclass=0x00 devsubclass=0x00 release=0x0110 sernum="0052450548137984" intclass=0x08 intsubclass= at port=0 interface=0 > > > This is the USB serial number, there might even exist another one > at CAM device layer. > e.g.: > [108]cicely13# camcontrol inquiry -n da -u 1 > pass1: <General Flash Disk Drive 2.05> Removable Direct Access SCSI-2 device > pass1: Serial Number ST92163-2000 > pass1: 1.000MB/s transfers > [110]cicely13# devinfo -v | grep umass0 > umass0 pnpinfo vendor=0x0483 product=0x1307 devclass=0x00 devsubclass=0x00 sernum="4710765066451" interface=0 intclass=0x08 intsubclass=0x06 at port=1 > That was one of the first things that I tried. It didn't work. All I got was a blank line. -- Daniel Rudy
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