PATCH & call for help: Marking ISA only drivers

[Andi Kleen <ak@muc.de>]

Hallo,

This patch tries to make most ISA only drivers dependent on CONFIG_ISA. 

The motivation is that it is a lot of work to get old drivers to compile
meaningfully (at least without warnings, not even testing them) on x86-64
and a lot of them are obviously not 64bit safe.  As it is very unlikely
that x86-64 boxes will ever have ISA slots[1] one simple way for that
is just removing the old ISA drivers from the configuration.

BTW I think CONFIG_ISA would be an useful configuration option for 
i386 too - at least most modern PCs do not come with ISA slots anymore.

Back to the patch: 

I left drivers/net alone because it looked like it already used CONFIG_ISA
properly.  I went over drivers/scsi and some other drivers directories
and just made those that looked like ISA only dependent on CONFIG_ISA.
Note that I usually don't know much about these devices, I just took
a quick look at the source of the driver. Of course I may have made mistakes
during that, so if you see any driver wrongly marked please tell me.

You can test that on i386 by applying the patch, change the
"define_bool CONFIG_ISA y" in arch/i386/config to n  and run your
favourite configuration tool and look for any ISA only drivers still appearing
as configuration choices.

I left out drivers/media/video and drivers/input/joystick - if there are any 
ISA only devices in there please tell me.

Patch for 2.5.14

Thanks,
-Andi

[1] If someone later will be ever crazy enough to buy an x86-64 machine
and put an ISA bridge into it they'll have to pay for that and fix 
all the ISA drivers they need ;)

diff -X ../../KDIFX -burp linux-vanilla/arch/x86_64/config.in linux/arch/x86_64/config.in
--- linux-vanilla/arch/x86_64/config.in	Mon May  6 13:11:56 2002
+++ linux/arch/x86_64/config.in	Thu May  9 19:41:56 2002
@@ -2,12 +2,15 @@
 # For a description of the syntax of this configuration file,
 # see Documentation/kbuild/config-language.txt.
 #
+# Note: ISA is disabled and will hopefully never be enabled.
+#
+
 mainmenu_name "Linux Kernel Configuration"
 
 define_bool CONFIG_X86_64 y
 
 define_bool CONFIG_X86 y
-define_bool CONFIG_ISA y
+define_bool CONFIG_ISA n
 define_bool CONFIG_SBUS n
 
 define_bool CONFIG_UID16 y
@@ -94,7 +99,7 @@ source drivers/mtd/Config.in
 
 source drivers/parport/Config.in
 
-source drivers/pnp/Config.in
+#source drivers/pnp/Config.in
 
 source drivers/block/Config.in
 
@@ -142,9 +147,10 @@ if [ "$CONFIG_NET" = "y" ]; then
    bool 'Network device support' CONFIG_NETDEVICES
    if [ "$CONFIG_NETDEVICES" = "y" ]; then
       source drivers/net/Config.in
-      if [ "$CONFIG_ATM" = "y" ]; then
-         source drivers/atm/Config.in
-      fi
+# ATM seems to be largely 64bit unsafe and also unmaintained.
+#      if [ "$CONFIG_ATM" = "y" ]; then
+#         source drivers/atm/Config.in
+#      fi
    fi
    endmenu
 fi
Only in linux/arch/x86_64: config.in-o
diff -X ../../KDIFX -burp linux-vanilla/drivers/char/Config.in linux/drivers/char/Config.in
--- linux-vanilla/drivers/char/Config.in	Fri May  3 13:22:24 2002
+++ linux/drivers/char/Config.in	Thu May  9 19:30:51 2002
@@ -39,7 +39,7 @@ if [ "$CONFIG_SERIAL_NONSTANDARD" = "y" 
    if [ "$CONFIG_DIGIEPCA" = "n" ]; then
       tristate '  Digiboard PC/Xx Support' CONFIG_DIGI
    fi
-   tristate '  Hayes ESP serial port support' CONFIG_ESPSERIAL
+   dep_tristate '  Hayes ESP serial port support' CONFIG_ESPSERIAL CONFIG_ISA
    tristate '  Moxa Intellio support' CONFIG_MOXA_INTELLIO
    tristate '  Moxa SmartIO support' CONFIG_MOXA_SMARTIO
    if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
Only in linux/drivers/char: Config.in-o
Only in linux/drivers/char: conmakehash
diff -X ../../KDIFX -burp linux-vanilla/drivers/media/radio/Config.in linux/drivers/media/radio/Config.in
--- linux-vanilla/drivers/media/radio/Config.in	Sun Apr 14 21:18:54 2002
+++ linux/drivers/media/radio/Config.in	Thu May  9 20:07:45 2002
@@ -4,6 +4,7 @@
 mainmenu_option next_comment
 comment 'Radio Adapters'
 
+if [ "$CONFIG_ISA" = "y" ]; then
 dep_tristate '  ADS Cadet AM/FM Tuner' CONFIG_RADIO_CADET $CONFIG_VIDEO_DEV
 dep_tristate '  AIMSlab RadioTrack (aka RadioReveal) support' CONFIG_RADIO_RTRACK $CONFIG_VIDEO_DEV
 if [ "$CONFIG_RADIO_RTRACK" = "y" ]; then
@@ -21,9 +22,11 @@ dep_tristate '  GemTek Radio Card suppor
 if [ "$CONFIG_RADIO_GEMTEK" = "y" ]; then
    hex '    GemTek i/o port (0x20c, 0x30c, 0x24c or 0x34c)' CONFIG_RADIO_GEMTEK_PORT 34c
 fi
+fi
 dep_tristate '  GemTek PCI Radio Card support' CONFIG_RADIO_GEMTEK_PCI $CONFIG_VIDEO_DEV $CONFIG_PCI
 dep_tristate '  Guillemot MAXI Radio FM 2000 radio' CONFIG_RADIO_MAXIRADIO $CONFIG_VIDEO_DEV
 dep_tristate '  Maestro on board radio' CONFIG_RADIO_MAESTRO $CONFIG_VIDEO_DEV
+if [ "$CONFIG_ISA" = "y" ]; then
 dep_tristate '  miroSOUND PCM20 radio' CONFIG_RADIO_MIROPCM20 $CONFIG_VIDEO_DEV $CONFIG_SOUND_ACI_MIXER
 dep_tristate '    miroSOUND PCM20 radio RDS user interface (EXPERIMENTAL)' CONFIG_RADIO_MIROPCM20_RDS $CONFIG_RADIO_MIROPCM20 $CONFIG_EXPERIMENTAL
 dep_tristate '  SF16FMI Radio' CONFIG_RADIO_SF16FMI $CONFIG_VIDEO_DEV
@@ -48,6 +51,7 @@ fi
 dep_tristate '  Zoltrix Radio' CONFIG_RADIO_ZOLTRIX $CONFIG_VIDEO_DEV
 if [ "$CONFIG_RADIO_ZOLTRIX" = "y" ]; then
    hex '    ZOLTRIX I/O port (0x20c or 0x30c)' CONFIG_RADIO_ZOLTRIX_PORT 20c
+fi
 fi
 
 endmenu
Only in linux/drivers/media/radio: Config.in-o
diff -X ../../KDIFX -burp linux-vanilla/drivers/net/hamradio/Config.in linux/drivers/net/hamradio/Config.in
--- linux-vanilla/drivers/net/hamradio/Config.in	Sun Apr 14 21:18:42 2002
+++ linux/drivers/net/hamradio/Config.in	Thu May  9 19:59:53 2002
@@ -4,8 +4,10 @@ dep_tristate 'Serial port KISS driver' C
 dep_tristate 'Serial port 6PACK driver' CONFIG_6PACK $CONFIG_AX25
 dep_tristate 'BPQ Ethernet driver' CONFIG_BPQETHER $CONFIG_AX25
     
-dep_tristate 'High-speed (DMA) SCC driver for AX.25' CONFIG_DMASCC $CONFIG_AX25
-dep_tristate 'Z8530 SCC driver' CONFIG_SCC $CONFIG_AX25
+if [ "$CONFIG_ISA" = "y" ]; then
+  dep_tristate 'High-speed (DMA) SCC driver for AX.25' CONFIG_DMASCC $CONFIG_AX25
+  dep_tristate 'Z8530 SCC driver' CONFIG_SCC $CONFIG_AX25
+fi
 if [ "$CONFIG_SCC" != "n" ]; then
    bool '  additional delay for PA0HZP OptoSCC compatible boards' CONFIG_SCC_DELAY
    bool '  support for TRX that feedback the tx signal to rx' CONFIG_SCC_TRXECHO
Only in linux/drivers/net/hamradio: Config.in-o
diff -X ../../KDIFX -burp linux-vanilla/drivers/net/wan/Config.in linux/drivers/net/wan/Config.in
--- linux-vanilla/drivers/net/wan/Config.in	Mon May  6 13:11:57 2002
+++ linux/drivers/net/wan/Config.in	Thu May  9 19:59:54 2002
@@ -9,11 +9,12 @@ bool 'Wan interfaces support' CONFIG_WAN
 if [ "$CONFIG_WAN" = "y" ]; then
 # There is no way to detect a comtrol sv11 - force it modular for now.
 
+   if [ "$CONFIG_ISA" = "y" ]; then
    dep_tristate '  Comtrol Hostess SV-11 support' CONFIG_HOSTESS_SV11 m
-
 # The COSA/SRP driver has not been tested as non-modular yet.
 
    dep_tristate '  COSA/SRP sync serial boards support' CONFIG_COSA m
+   fi
 
 #
 # COMX drivers
Only in linux/drivers/net/wan: Config.in-o
Only in linux/drivers/pci: gen-devlist
diff -X ../../KDIFX -burp linux-vanilla/drivers/scsi/Config.in linux/drivers/scsi/Config.in
--- linux-vanilla/drivers/scsi/Config.in	Fri May  3 13:22:27 2002
+++ linux/drivers/scsi/Config.in	Thu May  9 19:54:28 2002
@@ -42,11 +42,17 @@ fi
 if [ "$CONFIG_PCI" = "y" ]; then
    dep_tristate '3ware Hardware ATA-RAID support' CONFIG_BLK_DEV_3W_XXXX_RAID $CONFIG_SCSI
 fi
-dep_tristate '7000FASST SCSI support' CONFIG_SCSI_7000FASST $CONFIG_SCSI
+if [ "$CONFIG_ISA" = "y" ]; then
+   dep_tristate '7000FASST SCSI support' CONFIG_SCSI_7000FASST $CONFIG_SCSI
+fi
 dep_tristate 'ACARD SCSI support' CONFIG_SCSI_ACARD $CONFIG_SCSI
-dep_tristate 'Adaptec AHA152X/2825 support' CONFIG_SCSI_AHA152X $CONFIG_SCSI
-dep_tristate 'Adaptec AHA1542 support' CONFIG_SCSI_AHA1542 $CONFIG_SCSI
-dep_tristate 'Adaptec AHA1740 support' CONFIG_SCSI_AHA1740 $CONFIG_SCSI
+if [ "$CONFIG_ISA" = "y" ]; then
+   dep_tristate 'Adaptec AHA152X/2825 support' CONFIG_SCSI_AHA152X $CONFIG_SCSI
+   dep_tristate 'Adaptec AHA1542 support' CONFIG_SCSI_AHA1542 $CONFIG_SCSI
+fi
+if [ "$CONFIG_EISA" = "y" ]; then
+  dep_tristate 'Adaptec AHA1740 support' CONFIG_SCSI_AHA1740 $CONFIG_SCSI
+fi
 source drivers/scsi/aic7xxx/Config.in
 if [ "$CONFIG_SCSI_AIC7XXX" != "y" ]; then
    dep_tristate 'Old Adaptec AIC7xxx support' CONFIG_SCSI_AIC7XXX_OLD $CONFIG_SCSI
@@ -56,10 +62,16 @@ if [ "$CONFIG_SCSI_AIC7XXX" != "y" ]; th
       bool '  Collect statistics to report in /proc' CONFIG_AIC7XXX_OLD_PROC_STATS
    fi
 fi
-dep_tristate 'Adaptec I2O RAID support ' CONFIG_SCSI_DPT_I2O $CONFIG_SCSI
+# All the I2O code and drivers do not seem to be 64bit safe.
+if [ "$CONFIG_X86_64" != "y" ]; then
+  dep_tristate 'Adaptec I2O RAID support ' CONFIG_SCSI_DPT_I2O $CONFIG_SCSI
+fi
 dep_tristate 'AdvanSys SCSI support' CONFIG_SCSI_ADVANSYS $CONFIG_SCSI
 dep_tristate 'Always IN2000 SCSI support' CONFIG_SCSI_IN2000 $CONFIG_SCSI
-dep_tristate 'AM53/79C974 PCI SCSI support' CONFIG_SCSI_AM53C974 $CONFIG_SCSI $CONFIG_PCI
+# does not use pci dma and seems to be isa/onboard only for old machines
+if [ "$CONFIG_X86_64" != "y" ]; then
+  dep_tristate 'AM53/79C974 PCI SCSI support' CONFIG_SCSI_AM53C974 $CONFIG_SCSI $CONFIG_PCI
+fi
 dep_tristate 'AMI MegaRAID support' CONFIG_SCSI_MEGARAID $CONFIG_SCSI
 
 dep_tristate 'BusLogic SCSI support' CONFIG_SCSI_BUSLOGIC $CONFIG_SCSI
@@ -70,7 +82,9 @@ if [ "$CONFIG_PCI" = "y" ]; then
    dep_tristate 'Compaq Fibre Channel 64-bit/66Mhz HBA support' CONFIG_SCSI_CPQFCTS $CONFIG_SCSI
 fi
 dep_tristate 'DMX3191D SCSI support' CONFIG_SCSI_DMX3191D $CONFIG_SCSI $CONFIG_PCI
-dep_tristate 'DTC3180/3280 SCSI support' CONFIG_SCSI_DTC3280 $CONFIG_SCSI
+if [ "$CONFIG_ISA" != "y" ]; then
+  dep_tristate 'DTC3180/3280 SCSI support' CONFIG_SCSI_DTC3280 $CONFIG_SCSI
+fi
 dep_tristate 'EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support' CONFIG_SCSI_EATA $CONFIG_SCSI
 if [ "$CONFIG_SCSI_EATA" != "n" ]; then
    bool '  enable tagged command queueing' CONFIG_SCSI_EATA_TAGGED_QUEUE
@@ -84,12 +98,14 @@ if [ "$CONFIG_MCA" = "y" ]; then
    dep_tristate 'Future Domain MCS-600/700 SCSI support' CONFIG_SCSI_FD_MCS $CONFIG_SCSI
 fi
 dep_tristate 'Intel/ICP (former GDT SCSI Disk Array) RAID Controller support' CONFIG_SCSI_GDTH $CONFIG_SCSI
-dep_tristate 'Generic NCR5380/53c400 SCSI support' CONFIG_SCSI_GENERIC_NCR5380 $CONFIG_SCSI
-if [ "$CONFIG_SCSI_GENERIC_NCR5380" != "n" ]; then
+if [ "$CONFIG_ISA" = "y" ]; then
+  dep_tristate 'Generic NCR5380/53c400 SCSI support' CONFIG_SCSI_GENERIC_NCR5380 $CONFIG_SCSI
+  if [ "$CONFIG_SCSI_GENERIC_NCR5380" != "n" ]; then
    bool '  Enable NCR53c400 extensions' CONFIG_SCSI_GENERIC_NCR53C400
    choice 'NCR5380/53c400 mapping method (use Port for T130B)' \
 		"Port CONFIG_SCSI_G_NCR5380_PORT \
 		 Memory CONFIG_SCSI_G_NCR5380_MEM" Port
+  fi
 fi
 if [ "$CONFIG_MCA" = "y" ]; then
    dep_tristate 'IBMMCA SCSI support' CONFIG_SCSI_IBMMCA $CONFIG_SCSI
@@ -111,7 +127,9 @@ if [ "$CONFIG_PARPORT" != "n" ]; then
       bool  '  ppa/imm option - Assume slow parport control register' CONFIG_SCSI_IZIP_SLOW_CTR
    fi
 fi
-dep_tristate 'NCR53c406a SCSI support' CONFIG_SCSI_NCR53C406A $CONFIG_SCSI
+if [ "$CONFIG_ISA" = "y" ]; then
+  dep_tristate 'NCR53c406a SCSI support' CONFIG_SCSI_NCR53C406A $CONFIG_SCSI
+fi
 if [ "$CONFIG_MCA" = "y" ]; then
    dep_tristate 'NCR Dual 700 MCA SCSI support' CONFIG_SCSI_NCR_D700 $CONFIG_SCSI
    if [ "$CONFIG_SCSI_NCR_D700" != "n" ]; then
@@ -164,11 +182,17 @@ fi
 if [ "$CONFIG_MCA" = "y" ]; then
    dep_tristate 'NCR MCA 53C9x SCSI support' CONFIG_SCSI_MCA_53C9X $CONFIG_SCSI
 fi
-dep_tristate 'PAS16 SCSI support' CONFIG_SCSI_PAS16 $CONFIG_SCSI
+if [ "$CONFIG_ISA" = "y" ]; then
+   dep_tristate 'PAS16 SCSI support' CONFIG_SCSI_PAS16 $CONFIG_SCSI
+fi
 dep_tristate 'PCI2000 support' CONFIG_SCSI_PCI2000 $CONFIG_SCSI
 dep_tristate 'PCI2220i support' CONFIG_SCSI_PCI2220I $CONFIG_SCSI
-dep_tristate 'PSI240i support' CONFIG_SCSI_PSI240I $CONFIG_SCSI
-dep_tristate 'Qlogic FAS SCSI support' CONFIG_SCSI_QLOGIC_FAS $CONFIG_SCSI
+if [ "$CONFIG_ISA" = "y" ]; then
+   dep_tristate 'PSI240i support' CONFIG_SCSI_PSI240I $CONFIG_SCSI
+fi
+if [ "$CONFIG_ISA" = "y" ]; then
+   dep_tristate 'Qlogic FAS SCSI support' CONFIG_SCSI_QLOGIC_FAS $CONFIG_SCSI
+fi
 if [ "$CONFIG_PCI" = "y" ]; then
    dep_tristate 'Qlogic ISP SCSI support' CONFIG_SCSI_QLOGIC_ISP $CONFIG_SCSI
    dep_tristate 'Qlogic ISP FC SCSI support' CONFIG_SCSI_QLOGIC_FC $CONFIG_SCSI
@@ -177,24 +201,31 @@ if [ "$CONFIG_PCI" = "y" ]; then
    fi
    dep_tristate 'Qlogic QLA 1280 SCSI support' CONFIG_SCSI_QLOGIC_1280 $CONFIG_SCSI
 fi
-if [ "$CONFIG_X86" = "y" ]; then
+if [ "$CONFIG_X86" = "y" -a "$CONFIG_ISA" = "y" ]; then
    dep_tristate 'Seagate ST-02 and Future Domain TMC-8xx SCSI support' CONFIG_SCSI_SEAGATE $CONFIG_SCSI
 fi
-dep_tristate 'Simple 53c710 SCSI support (Compaq, NCR machines)' CONFIG_SCSI_SIM710 $CONFIG_SCSI
-dep_tristate 'Symbios 53c416 SCSI support' CONFIG_SCSI_SYM53C416 $CONFIG_SCSI
+# definitely looks note 64bit safe:
+if [ "$CONFIG_ISA" = "y" -o "$CONFIG_MCA" = "y" -a "$CONFIG_X86_64" != "y" ]; then
+  dep_tristate 'Simple 53c710 SCSI support (Compaq, NCR machines)' CONFIG_SCSI_SIM710 $CONFIG_SCSI
+fi
+if [ "$CONFIG_ISA" = "y" ]; then
+  dep_tristate 'Symbios 53c416 SCSI support' CONFIG_SCSI_SYM53C416 $CONFIG_SCSI
+fi
 if [ "$CONFIG_PCI" = "y" ]; then
    dep_tristate 'Tekram DC390(T) and Am53/79C974 SCSI support' CONFIG_SCSI_DC390T $CONFIG_SCSI
    if [ "$CONFIG_SCSI_DC390T" != "n" ]; then
       bool '  _omit_ support for non-DC390 adapters' CONFIG_SCSI_DC390T_NOGENSUPP
    fi
 fi
-dep_tristate 'Trantor T128/T128F/T228 SCSI support' CONFIG_SCSI_T128 $CONFIG_SCSI
+if [ "$CONFIG_ISA" = "y" ]; then
+  dep_tristate 'Trantor T128/T128F/T228 SCSI support' CONFIG_SCSI_T128 $CONFIG_SCSI
+fi
 dep_tristate 'UltraStor 14F/34F support' CONFIG_SCSI_U14_34F $CONFIG_SCSI
-   if [ "$CONFIG_SCSI_U14_34F" != "n" ]; then
+if [ "$CONFIG_SCSI_U14_34F" != "n" ]; then
       bool '  enable elevator sorting' CONFIG_SCSI_U14_34F_LINKED_COMMANDS
       int  '  maximum number of queued commands' CONFIG_SCSI_U14_34F_MAX_TAGS 8
-   fi
-if [ "$CONFIG_X86" = "y" ]; then
+fi
+if [ "$CONFIG_X86" = "y" -a "$CONFIG_ISA" = "y" ]; then
    dep_tristate 'UltraStor SCSI support' CONFIG_SCSI_ULTRASTOR $CONFIG_SCSI
 fi
 #
Only in linux/drivers/scsi: Config.in-o