#!/bin/sh
#----------------------------------------------------------------------------
# /etc/boot.d/rc020.hd-generic
#
# Last Update:  $Id$
#----------------------------------------------------------------------------

begin_script BOOT "loading generic disk drivers ..."

# load hd-modules

do_modprobe_if_exists kernel/fs/$extfs $extfs
do_modprobe_if_exists kernel/fs/isofs isofs

do_modprobe_if_exists kernel/drivers/virtio virtio_pci
do_modprobe_if_exists kernel/drivers/block virtio_blk
do_modprobe_if_exists kernel/drivers/virtio virtio_balloon

# I need a quiet do_modprobe_if_exists function for this as inserting might fail.
# Using workaround and only try to load xen drivers on xen DomU

if [ -n "`grep xen /sys/devices/system/clocksource/clocksource0/available_clocksource`" ]
then
  do_modprobe_if_exists kernel/drivers/block xen-blkfront
fi

do_modprobe sd_mod
do_modprobe sr_mod

if [ "$ARCH" = "x86" -o "$ARCH" = "x86_64" ]
then
  do_modprobe ata_generic all_generic_ide=1
  do_modprobe ata_piix

  # Only load the ISA-Legacy Drivers if both primary and secondary IDE are not occupied yet
  if [ -z "$(sed -n '/^[[:space:]]*01[7f]0-01[7f]7[[:space:]]*:[[:space:]]*[a-z]/p' /proc/ioports)" ]
  then
    # /sbin/modprobe is used intentionally to avoid error-message on sata/usb only system without ide
    do_modprobe -q pata_legacy all=1
  fi

  do_modprobe ahci
fi

if [ -f /proc/bus/usb/devices ]; then
    num=`grep -c "^I:.*Cls=08" /proc/bus/usb/devices`
    for i in `seq 1 20`; do
        fin=`dmesg | grep -c "^usb-storage:.*device scan complete"`
        [ $num -eq $fin ] && break
        sleep 1
    done
fi

wait_for_mdev
# Disable DMA for Drives which are accesses via generic ATA Driver
# As this seems to cause some trouble with newer DMA-Capable CF-Cards
# and some IDE-Controllers
# Use the native Chipset IDE-Drivers and the Problem should be gone.
# Some IDE-to-CF Adapters don't have the DMA-Pins connected correctly
# If you have such an Adapter you should use the generic PCI-IDE Driver and
# live with the timeout at the startup or modify your adapter to be
# DMA-Capable

if [ -x /sbin/hdparm ]
then
  drivelist=''
  for path in /sys/bus/pci/devices/*
  do
    [ -d "$path" ] || continue
    if [ -n "`ls -l $path/ | grep driver | grep ata_generic`" ]
    then
      drivelist="$drivelist `find $path -type d -name sd\? -exec basename \{\} \;`"
    fi
  done
  for drive in $drivelist
  do
    if [ -z "`/sbin/hdparm -d /dev/$drive | grep "using_dma.*=.*0"`" ]
    then
      /sbin/hdparm -Q 0 /dev/$drive >/dev/null 2>&1
      /sbin/hdparm -d0 /dev/$drive >/dev/null 2>&1
      /sbin/hdparm -X pio0 /dev/$drive >/dev/null 2>&1
    fi
  done
fi

end_script