mod-ide.sh

   1 #!/bin/sh
   2 #
   3 # geninitrd mod: ide
   4
   5 PREIDEMODS="-ide-core unknown -ide-detect -ide-disk -ide-gd_disk"
   6 PREIDEMODSOLD="-ide-probe -ide-probe-mod -ide-disk -ide-gd_disk"
   7
   8 # ???
   9 ide_only_root=${ide_only_root:-no}
  10
  11 # allow forcing loading IDE modules, likely from sysconfig/geninitrd
  12 ADDIDE=${ADDIDE:-no}
  13
  14 # return true if node is ide device
  15 # @param        string $node device node to be examined
  16 # @access       public
  17 is_ide() {
  18         local node="$1"
  19         if [ ! -e "$node" ]; then
  20                 warn "is_ide(): node $node doesn't exist!"
  21                 return 1
  22         fi
  23
  24         # TODO: more sophisticated check, not just pathname check
  25         if is_yes "$(echo "$node" | awk '/^\/dev\/(hd[a-l]|ide\/)/ { print "yes"; }')"; then
  26                 return 0
  27         fi
  28
  29         return 1
  30 }
  31
  32 # find modules for $devpath
  33 # @param        $devpath        device to be examined
  34 # @access       public
  35 find_modules_ide() {
  36         local devpath=$1
  37         # remove partition, if any
  38         local disk=${devpath%[0-9]*}
  39         # set blockdev for rootfs (hda, sdc, ...)
  40         local rootblkdev=${disk#/dev/}
  41
  42         local n
  43         if [ "$pack_version_long" -lt "002004021" ]; then
  44                 debug "Finding IDE modules for kernels <= 2.4.20"
  45                 for n in $PREIDEMODSOLD; do
  46                         findmodule "$n"
  47                 done
  48         else
  49                 local tryauto=1
  50                 for n in $PREIDEMODS; do
  51                         if [ "X$n" = "Xunknown" ]; then
  52                                 debug "Finding IDE modules using ide_hostadapter"
  53                                 local mod idemodules=$(modprobe_conf | awk '/ide_hostadapter/ && ! /^[\t ]*#/ { print $3; }')
  54                                 for mod in $idemodules; do
  55                                         tryauto=0;
  56                                         findmodule "$mod"
  57                                 done
  58
  59                                 if [ "$tryauto" -eq 1 ]; then
  60                                         # If tryauto {{{
  61                                         if [ -r /usr/share/pci-database/ide.pci -a -r /proc/bus/pci/devices ]; then
  62                                                 debug "Finding IDE modules using PCI ID database"
  63                                                 # Finding IDE modules using PCI ID database {{{
  64                                                 if is_yes "${ide_only_root}"; then
  65                                                         if [ -f /sys/block/${rootblkdev}/device/../../vendor -a -f /sys/block/${rootblkdev}/device/../../device ]; then
  66                                                                 vendorid="$(awk ' { gsub(/0x/,NUL); print $0 } ' /sys/block/${rootblkdev}/device/../../vendor)"
  67                                                                 deviceid="$(awk ' { gsub(/0x/,NUL); print $0 } ' /sys/block/${rootblkdev}/device/../../device)"
  68                                                                 searchpciid="${vendorid}${deviceid}"
  69                                                         elif [ -f /proc/ide/${rootblkdev}/../config ]; then
  70                                                                 searchpciid="$(awk ' /pci bus/ { print $7$9 } ' /proc/ide/${rootblkdev}/../config)"
  71                                                         fi
  72                                                 fi
  73
  74                                                 if [ -z "${searchpciid}" ]; then
  75                                                         searchpciid="$(awk ' { print $2 } ' /proc/bus/pci/devices)"
  76                                                 fi
  77
  78                                                 idemodules=""
  79
  80                                                 for nb in $searchpciid; do
  81                                                         eval `awk -v pciid="$nb" '{
  82                                                                 gsub("\t"," ");
  83                                                                 gsub("  +", " ");
  84                                                                 gsub("^ ","");
  85                                                                 if (/^[\t ]*#/)
  86                                                                         next;
  87                                                                 compmod = $1 "";        # make sure comparison type will be string
  88                                                                                         # cause pci IDs are hexadecimal numeric
  89                                                                 if (compmod == pciid) {
  90                                                                         module=$2;
  91                                                         #               min_kernel=$3;  # now in ide.pci $3,$4 = vendor and device name
  92                                                         #               max_kernel=$4;  #
  93                                                                         exit 0;
  94                                                                 }
  95                                                         }
  96
  97                                                         END {
  98                                                                 print "module=" module "\nmin_kernel=" min_kernel "\nmax_kernel=\"" max_kernel "\"\n";
  99                                                         }' /usr/share/pci-database/ide.pci`
 100                                                         [ -n "$module" ] && idemodules="$idemodules $module"
 101                                                 done
 102                                                 if is_yes "$(awk ' /ide=reverse/ { print "yes" } ' /proc/cmdline)"; then
 103                                                         new_idemodules=""
 104                                                         for nc in idemodules; do
 105                                                                 new_idemodules="$nc $new_idemodules"
 106                                                         done
 107                                                         idemodules="${new_idemodules}"
 108                                                 fi
 109
 110                                                 if [ -z "$idemodules" ]; then
 111                                                         warn "rootfs on IDE device but no related modules found, loading ide-generic."
 112                                                         idemodules="ide-generic"
 113                                                 fi
 114
 115                                                 # }}}
 116                                                 for nd in $idemodules; do
 117                                                         findmodule "-$nd"
 118                                                 done
 119                                         # }}}
 120                                         # else tryauto {{{
 121                                         else
 122                                                 [ -r /usr/share/pci-database/ide.pci ] || warn "/usr/share/pci-database/ide.pci missing."
 123                                                 [ -r /proc/bus/pci/devices ] || warn "/proc/bus/pci/devices missing."
 124                                                 warn "Automatic IDE modules finding not available."
 125                                         fi
 126                                         # }}}
 127                                 fi
 128                         else
 129                                 findmodule "$n"
 130                         fi
 131                 done
 132         fi
 133 }
 134
 135 # generate initrd fragment for ide device init
 136 # @access       public
 137 initrd_gen_ide() {
 138         # nothing to do here
 139         return 0
 140 }