Hi Sebastian, On Wed, 2012-01-11 at 22:03 +0100, Sebastian Andrzej Siewior wrote: > This was tested with dummy_hcd on a local machine. HS, SS + stream support > works, command tagging is supported. Ach, it is UAS only right now, BOT is > missing. > > The gadget is configured via configfs like the remaining part of the > target framework. This gadget has a _few_ dependencies to get everything > working including a few bug fixes in the linux UAS driver for HS or some > extensions to the target framework itself. Each patch was posted earlier here > or there. My working tree can be found at in the git repository at: > > git://git.linutronix.de/users/bigeasy/linux.git target_uas > > it is Linux 3.2 based. I think this code looks OK for an initial merge into lio-core/master as the remaining v3.3 pending patches go upstream. > > Here is my script which which I used for testing: > > |#!/bin/sh > | > |#modprobe dummy_hcd is_super_speed=1 > |modprobe dummy_hcd > |modprobe target_core_mod > |modprobe tcm_usb_gadget > |mount a -t configfs /sys/kernel/config > | > |CONFIGFS=/sys/kernel/config/; > |TARGET=$CONFIGFS/target/core/ > |FABRIC=$CONFIGFS/target/usb_gadget/ > | > |# RD > |mkdir -p $TARGET/rd_mcp_0/ramdisk > |echo rd_pages=32768 > $TARGET/rd_mcp_0/ramdisk/control > |echo 1 > $TARGET/rd_mcp_0/ramdisk/enable > | > |# file > |mkdir -p $TARGET/fileio_0/fileio > |echo "fd_dev_name=/root/file.bin,fd_dev_size=31457280" > $TARGET/fileio_0/fileio/control > |echo 1 > $TARGET/fileio_0/fileio/enable > | > |mkdir -p $FABRIC/naa.6001405c3214b06a/tpgt_1 > |mkdir $FABRIC/naa.6001405c3214b06a/tpgt_1/lun/lun_0 > |mkdir $FABRIC/naa.6001405c3214b06a/tpgt_1/lun/lun_1 > |echo naa.6001405c3214b06b > $FABRIC/naa.6001405c3214b06a/tpgt_1/nexus > | > |ln -s $TARGET/rd_mcp_0/ramdisk $FABRIC/naa.6001405c3214b06a/tpgt_1/lun/lun_0/virtual_scsi_port > |ln -s $TARGET/fileio_0/fileio $FABRIC/naa.6001405c3214b06a/tpgt_1/lun/lun_1/virtual_scsi_port > > later to connect the gadget: > |echo 1 > /sys/kernel/config/target/usb_gadget/naa.6001405c3214b06a/tpgt_1/enable > > This setups a device with two luns. > So the next step is to add a /var/target/fabric/uasp.spec so this code can be used immediately by rtslib/targetcli. (jxm CC'ed) The README for this is available here: http://www.risingtidesystems.com/git/?p=rtslib.git;a=blob;f=specs/README;hb=HEAD # cat /var/target/fabric/uasp.spec # WARNING: This is a draft specfile supplied for testing only. # The fabric module feature set features = nexus # Use naa WWNs. wwn_type = naa # Non-standard module naming scheme kernel_module = tcm_usb_gadget # The configfs group configfs_group = usb_gadget > I believe I addressed all comments which came up on my last RFC. I still > have one static tpg because it exposes the gadget framework limitation. > Once we extend the gadget framework for multi udc support this limitation > can go away. > So I assume this will be addressed before an mainline merge, yes..? --nab -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
