From owner-cvs-all  Mon Apr  3  4:11:22 2000
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From: Nick Hibma <n_hibma@FreeBSD.org>
Date: Mon, 3 Apr 2000 04:11:13 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/cam cam_periph.h cam_xpt.c src/sys/dev/usb
         umass.c
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n_hibma     2000/04/03 04:11:13 PDT

  Modified files:
    sys/cam              cam_periph.h cam_xpt.c 
    sys/dev/usb          umass.c 
  Log:
  Add a hack to cam that makes the cam_xpt available to the rest of the
  kernel. Justin agress that there is no other reasonable alternative to
  do automatic rescans on connect.
  
  The problem is that when a new device attaches to a SIM (SCSI host
  controller) we need to send a XPT_SCAN_BUS command to the SIM using
  xpt_action. This requires however that there is a peripheral available
  to take the command (otherwise xpt_done and later bomb). The RESCAN
  ioctl uses the same periph.
  
  This enables a USB mass storage drive to do an automatic rescan on
  connection of the drive.
  
  The automatic dropping of a CAM entry on disconnection was already
  working (asynchronous event).
  
  The next thing to do is find someone to commit a change to vpo to do the
  same thing. Just port umass_cam_rescan and friends across to that
  driver.
  
  Approved by:   gibbs
  
  Revision  Changes    Path
  1.8       +3 -1      src/sys/cam/cam_periph.h
  1.82      +1 -3      src/sys/cam/cam_xpt.c
  1.18      +4 -27     src/sys/dev/usb/umass.c



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