m68k: atari: Add and use "atari.h"

When building with W=1:

arch/m68k/atari/time.c:59:1: warning: no previous prototype for ‘atari_sched_init’ [-Wmissing-prototypes]
59 | atari_sched_init(void)
| ^~~~~~~~~~~~~~~~
arch/m68k/atari/time.c:140:5: warning: no previous prototype for ‘atari_mste_hwclk’ [-Wmissing-prototypes]
140 | int atari_mste_hwclk( int op, struct rtc_time *t )
| ^~~~~~~~~~~~~~~~
arch/m68k/atari/time.c:199:5: warning: no previous prototype for ‘atari_tt_hwclk’ [-Wmissing-prototypes]
199 | int atari_tt_hwclk( int op, struct rtc_time *t )
| ^~~~~~~~~~~~~~
arch/m68k/atari/ataints.c:267:13: warning: no previous prototype for ‘atari_init_IRQ’ [-Wmissing-prototypes]
267 | void __init atari_init_IRQ(void)
| ^~~~~~~~~~~~~~
arch/m68k/atari/atasound.c:36:6: warning: no previous prototype for ‘atari_microwire_cmd’ [-Wmissing-prototypes]
36 | void atari_microwire_cmd (int cmd)
| ^~~~~~~~~~~~~~~~~~~
arch/m68k/atari/atasound.c:53:6: warning: no previous prototype for ‘atari_mksound’ [-Wmissing-prototypes]
53 | void atari_mksound (unsigned int hz, unsigned int ticks)
| ^~~~~~~~~~~~~

Fix this by introducing a new header file "atari.h" for holding the
prototypes of functions implemented in arch/m68k/atari/.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/336e4a478ccbfd7e3e91cdbd27636947587a23a6.1694613528.git.geert@linux-m68k.org

m68k: atari: Make atari_platform_init() static

When building with W=1:

arch/m68k/atari/config.c:883:12: warning: no previous prototype for ‘atari_platform_init’ [-Wmissing-prototypes]
883 | int __init atari_platform_init(void)
| ^~~~~~~~~~~~~~~~~~~

Fix this by making atari_platform_init() static.
There was never a user outside arch/m68k/atari/config.c.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/417b46ec1945212c0b1fcc8b0f4074bae9a8b0b4.1694613528.git.geert@linux-m68k.org

m68k: Add asm/config.h

To avoid 'warning: no previous prototype for' errors, declare all the
parse_bootinfo and config function prototypes into asm/config.h and
include it in arch/m68k/kernel/setup_mm.c and arch/m68k/*/config.c.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Link: https://lore.kernel.org/r/20220121200738.2577697-2-laurent@vivier.eu
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/q40: Replace q40ide driver with pata_falcon and falconide

This allows m68k q40 systems to switch from the deprecated IDE subsystem
to libata.

Enhance the byte-swapping falconide and pata_falcon platform drivers to
accept an irq resource, for use on q40. Atari ST-DMA IRQ arrangements seem
to co-exist with q40 IRQ arrangements without too much mess.

The new IO resources were added solely for the purpose of making
request_region() reservations identical to those made by q40ide: these
regions aren't used for actual IO.

Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Richard Zidlicky <rz@linux-m68k.org>
Reviewed-and-tested-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
Link: https://lore.kernel.org/r/eefb7e9c2291e09fb4e065ce06bc105f05bb9e06.1623287706.git.fthain@linux-m68k.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

m68k: Remove unused mach_max_dma_address

This information is unused since the discontinuous memory support
has been introduced in 2007.

Fixes: 12d810c1b8c2 ("m68k: discontinuous memory support")
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Link: https://lore.kernel.org/r/20201009095621.833192-1-laurent@vivier.eu
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k: remove timer_interrupt() function

This gets passed to a number of init functions, but is
ignored everywhere, so remove the function and change the
mach_sched_init callback to take no arguments.

Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

m68k/atari: Convert Falcon IDE drivers to platform drivers

Autoloading of Falcon IDE driver modules requires converting these
drivers to platform drivers.

Add platform device for Falcon IDE interface in Atari platform setup
code. Use this in the pata_falcon driver in place of the simple
platform device set up on the fly.

Convert falconide driver to use the same platform device that is used
by pata_falcon also. (With the introduction of a platform device for
the Atari Falcon IDE interface, the old Falcon IDE driver no longer
loads (resource already claimed by the platform device)).

Tested (as built-in driver) on my Atari Falcon.

Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://lore.kernel.org/r/1573008449-8226-1-git-send-email-schmitzmic@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k: atari: Rename shifter to shifter_st to avoid conflict

When test-compiling the BCM2835 pin control driver on m68k:

In file included from arch/m68k/include/asm/io_mm.h:32:0,
from arch/m68k/include/asm/io.h:8,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from include/linux/gpio/driver.h:7,
from drivers/pinctrl/bcm/pinctrl-bcm2835.c:17:
drivers/pinctrl/bcm/pinctrl-bcm2835.c: In function 'bcm2711_pull_config_set':
arch/m68k/include/asm/atarihw.h:190:22: error: expected identifier or '(' before 'volatile'
# define shifter ((*(volatile struct SHIFTER *)SHF_BAS))

"shifter" is a too generic name for a global definition.

As the corresponding definition for Atari TT is already called
"shifter_tt", fix this by renaming the definition for Atari ST to
"shifter_st".

Reported-by: kbuild test robot <lkp@intel.com>
Suggested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

m68k: Drop ARCH_USES_GETTIMEOFFSET

The functions that implement arch_gettimeoffset are re-used by
new clocksource drivers in subsequent patches.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/atari: Avoid VLA use in atari_switches_setup()

With gcc 7.3.0:

arch/m68k/atari/config.c: In function ‘atari_switches_setup’:
arch/m68k/atari/config.c:151:2: warning: ISO C90 forbids variable length array ‘switches’ [-Wvla]
char switches[strlen(str) + 1];
^~~~

Replace the variable size by the maximum kernel command line size (256
bytes), which is an upper limit for all suboptions.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k: Remove unused set_clock_mmss() helpers

Commit 397ac99c6cef ("m68k: remove dead timer code") removed set_rtc_mmss()
because it was unused in 2012. However, this was itself the only user of the
mach_set_clock_mmss() callback and the many implementations of that callback,
which are equally unused.

This removes all of those as well.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Ungerer <gerg@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/atari: Modernize printing of kernel messages

- Convert from printk() to pr_*(),
- Add missing continuations, to fix user-visible breakage,
- Drop useless WARNING prefix,
- Move trailing spaces to start of continuations.

Note that the "Keyboard overrun" message will now only be generated when
the kernel has been compiled for debugging.

Fixes: 4bcc595ccd80decb ("printk: reinstate KERN_CONT for printing continuation lines")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/atari: Use seq_puts() in atari_get_hardware_list()

A string which did not contain a data format specification should be put
into a sequence. Thus use the corresponding function "seq_puts".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k: Use IS_ENABLED() instead of checking for built-in or module

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/atari, m68k/sun3: Fix SCSI platform device registration when driver is modular

Fixes: 3ff228af84b5 ("atari_scsi: Convert to platform device")
Fixes: 0d31f8759109 ("sun3_scsi: Convert to platform device")
Reported-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

atari_scsi: Convert to platform device

Convert atari_scsi to platform device and eliminate scsi_register().

Validate __setup options later on so that module options are checked as well.

Remove the comment about the scsi mid-layer disabling the host irq as it
is no longer true (AFAICT). Also remove the obsolete slow interrupt stuff
(IRQ_TYPE_SLOW == 0 anyway).

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>

m68k/UAPI: Use proper types (endianness/size) in <asm/bootinfo*.h>

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/UAPI: Disintegrate arch/m68k/include/asm/bootinfo.h

Export the bootinfo definitions that are used by bootstrap loaders, and
split them up in generic and platform-specific parts.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/atari: USB - add platform devices for EtherNAT/NetUSBee ISP1160 HCD

Add platform devices used by the isp116x-hcd driver for EtherNAT and
NetUSBee. Note that the NetUSBee also contains a RTL8019 Ethernet chip,
so its platform device is used to cover the EtherNEC case, too.
Register definitions thanks to David Galvez <dgalvez75@gmail.com>

[Geert] Conditionalize isp1160_delay() definition

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/atari: EtherNEC - add platform device support

Add platform device for the Atari ROM port ethernet adapter, EtherNEC.
This platform device will be used by the ne.c driver.

[Geert] Conditionalize platform device data structures

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k/atari: EtherNAT - platform device and IRQ support code

Add platform device and interrupt definitions necessary for the EtherNAT
Ethernet/USB adapter for the Falcon extension port. EtherNAT interrupt
numbers are 139/140 so the max. interrupt number for Atari has to be
increased.

[Geert] Conditionalize platform device data structures

Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k: set arch_gettimeoffset directly

remove m68k's mach_gettimeoffset function pointer, and instead directly
set the arch_gettimeoffset function pointer. This requires multiplying
all function results by 1000, since the removed m68k_gettimeoffset() did
this. Also, s/unsigned long/u32/ just to make the function prototypes
exactly match that of arch_gettimeoffset.

Cc: Joshua Thompson <funaho@jurai.org>
Cc: Sam Creasey <sammy@sammy.net>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Phil Blundell <philb@gnu.org>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

Disintegrate asm/system.h for M68K

Disintegrate asm/system.h for M68K.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Greg Ungerer <gerg@uclinux.org>
cc: linux-m68k@lists.linux-m68k.org

m68k: Fix assembler constraint to prevent overeager gcc optimisation

Passing the address of a variable as an operand to an asm statement
doesn't mark the value of this variable as used, so gcc may optimize its
initialisation away. Fix this by using the "m" constraint instead.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: stable@vger.kernel.org

m68k/atari: Rename "scc" to "atari_scc"

It's a way too generic name for a global #define and conflicts with a variable
with the same name, causing build errors like:

| drivers/staging/brcm80211/brcmfmac/../util/siutils.c: In function ‘_si_clkctl_cc’:
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1364: error: expected identifier or ‘(’ before ‘volatile’
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1364: error: expected ‘)’ before ‘(’ token
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1421: error: incompatible types in assignment
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1422: error: invalid operands to binary &
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1423: error: invalid operands to binary &
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1424: error: invalid operands to binary |
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: aggregate value used where an integer was expected
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1425: error: incompatible type for argument 4 of ‘bcmsdh_reg_write’
| drivers/staging/brcm80211/brcmfmac/../util/siutils.c:1428: error: invalid operands to binary &
| make[8]: *** [drivers/staging/brcm80211/brcmfmac/../util/siutils.o] Error 1

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

m68k: atari - Rename "mfp" to "st_mfp"

http://kisskb.ellerman.id.au/kisskb/buildresult/72115/:
| net/mac80211/ieee80211_i.h:327: error: syntax error before 'volatile'
| net/mac80211/ieee80211_i.h:350: error: syntax error before '}' token
| net/mac80211/ieee80211_i.h:455: error: field 'sta' has incomplete type
| distcc[19430] ERROR: compile net/mac80211/main.c on sprygo/32 failed

This is caused by

| # define mfp ((*(volatile struct MFP*)MFP_BAS))

in arch/m68k/include/asm/atarihw.h, which conflicts with the new "mfp" enum in
net/mac80211/ieee80211_i.h.

Rename "mfp" to "st_mfp", as it's a way too generic name for a global #define.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

proc: move /proc/hardware to m68k-specific code

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

m68k: Remove the broken Hades support

This patch removes the Hades support that was marked as BROKEN 5 years ago.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

m68k: kill arch/m68k/atari/atari_ksyms.c

EXPORT_SYMBOL's belong to the actual code.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

m68k: early parameter support

Add early parameter support and convert current users to it.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

m68k: reformat various m68k files

Reformat various m68k files, so they actually look like Linux sources.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

IRQ: Use the new typedef for interrupt handler function pointers

Use the new typedef for interrupt handler function pointers rather than
actually spelling out the full thing each time. This was scripted with the
following small shell script:

#!/bin/sh
egrep -nHrl -e 'irqreturn_t[ ]*[(][*]' $* |
while read i
do
echo $i
perl -pi -e 's/irqreturn_t\s*[(]\s*[*]\s*([_a-zA-Z0-9]*)\s*[)]\s*[(]\s*int\s*,\s*void\s*[*]\s*[)]/irq_handler_t \1/g' $i || exit $?
done

Signed-Off-By: David Howells <dhowells@redhat.com>

[PATCH] m68k pt_regs fixes

m68k_handle_int() split in two functions: __m68k_handle_int() takes
pt_regs * and does set_irq_regs(); m68k_handle_int() doesn't get pt_regs
*.

Places where we used to call m68k_handle_int() recursively with the same
pt_regs have simply lost the second argument, the rest is switched to
__m68k_handle_int().

The rest of patch is just dropping pt_regs * where needed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Remove obsolete #include <linux/config.h>

Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

[PATCH] m68k: convert atari irq code

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] m68k: kill mach_floppy_setup, convert to proper __setup() in drivers

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] m68k: Moved initialisation of conswitchp from subarches to global arch setup

Signed-off-by: Kars de Jong <jongk@linux-m68k.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!