drivers/block: Remove PARIDE core and high-level protocols

Remove PARIDE core and high level protocols, taking care not to break
low-level drivers (used by pata_parport). Also update documentation.
Signed-off-by: Ondrej Zary <linux@zary.sk>
Acked-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>

Documentation/admin-guide/kernel-parameters.rst

@@ -142,7 +142,6 @@ parameter is applicable::
 	NFS	Appropriate NFS support is enabled.
 	OF	Devicetree is enabled.
 	PV_OPS	A paravirtualized kernel is enabled.
-	PARIDE	The ParIDE (parallel port IDE) subsystem is enabled.
 	PARISC	The PA-RISC architecture is enabled.
 	PCI	PCI bus support is enabled.
 	PCIE	PCI Express support is enabled.

Documentation/admin-guide/kernel-parameters.txt

@@ -4120,10 +4120,6 @@
 
 	pcbit=		[HW,ISDN]
 
-	pcd.		[PARIDE]
-			See header of drivers/block/paride/pcd.c.
-			See also Documentation/admin-guide/blockdev/paride.rst.
-
 	pci=option[,option...]	[PCI] various PCI subsystem options.
 
 				Some options herein operate on a specific device
@@ -4386,9 +4382,6 @@
 			for debug and development, but should not be
 			needed on a platform with proper driver support.
 
-	pd.		[PARIDE]
-			See Documentation/admin-guide/blockdev/paride.rst.
-
 	pdcchassis=	[PARISC,HW] Disable/Enable PDC Chassis Status codes at
 			boot time.
 			Format: { 0 | 1 }
@@ -4401,12 +4394,6 @@
 			allocator.  This parameter is primarily	for debugging
 			and performance comparison.
 
-	pf.		[PARIDE]
-			See Documentation/admin-guide/blockdev/paride.rst.
-
-	pg.		[PARIDE]
-			See Documentation/admin-guide/blockdev/paride.rst.
-
 	pirq=		[SMP,APIC] Manual mp-table setup
 			See Documentation/x86/i386/IO-APIC.rst.
 
@@ -4568,9 +4555,6 @@
 
 	pstore.backend=	Specify the name of the pstore backend to use
 
-	pt.		[PARIDE]
-			See Documentation/admin-guide/blockdev/paride.rst.
-
 	pti=		[X86-64] Control Page Table Isolation of user and
 			kernel address spaces.  Disabling this feature
 			removes hardening, but improves performance of

MAINTAINERS

@@ -15844,13 +15844,6 @@ F:	arch/*/include/asm/paravirt*.h
 F:	arch/*/kernel/paravirt*
 F:	include/linux/hypervisor.h
 
-PARIDE DRIVERS FOR PARALLEL PORT IDE DEVICES
-M:	Tim Waugh <tim@cyberelk.net>
-L:	linux-parport@lists.infradead.org (subscribers-only)
-S:	Maintained
-F:	Documentation/admin-guide/blockdev/paride.rst
-F:	drivers/block/paride/
-
 PARISC ARCHITECTURE
 M:	"James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
 M:	Helge Deller <deller@gmx.de>

drivers/ata/Kconfig

@@ -1164,7 +1164,7 @@ config PATA_WINBOND_VLB
 
 config PATA_PARPORT
 	tristate "Parallel port IDE device support"
-	depends on PARPORT_PC && PARIDE=n
+	depends on PARPORT_PC
 	help
 	  There are many external CD-ROM and disk devices that connect through
 	  your computer's parallel port. Most of them are actually IDE devices

drivers/block/Kconfig

@@ -103,33 +103,6 @@ config GDROM
 	  Most users will want to say "Y" here.
 	  You can also build this as a module which will be called gdrom.
 
-config PARIDE
-	tristate "Parallel port IDE device support"
-	depends on PARPORT_PC
-	help
-	  There are many external CD-ROM and disk devices that connect through
-	  your computer's parallel port. Most of them are actually IDE devices
-	  using a parallel port IDE adapter. This option enables the PARIDE
-	  subsystem which contains drivers for many of these external drives.
-	  Read <file:Documentation/admin-guide/blockdev/paride.rst> for more information.
-
-	  If you have said Y to the "Parallel-port support" configuration
-	  option, you may share a single port between your printer and other
-	  parallel port devices. Answer Y to build PARIDE support into your
-	  kernel, or M if you would like to build it as a loadable module. If
-	  your parallel port support is in a loadable module, you must build
-	  PARIDE as a module. If you built PARIDE support into your kernel,
-	  you may still build the individual protocol modules and high-level
-	  drivers as loadable modules. If you build this support as a module,
-	  it will be called paride.
-
-	  To use the PARIDE support, you must say Y or M here and also to at
-	  least one high-level driver (e.g. "Parallel port IDE disks",
-	  "Parallel port ATAPI CD-ROMs", "Parallel port ATAPI disks" etc.) and
-	  to at least one protocol driver (e.g. "ATEN EH-100 protocol",
-	  "MicroSolutions backpack protocol", "DataStor Commuter protocol"
-	  etc.).
-
 source "drivers/block/paride/Kconfig"
 
 source "drivers/block/mtip32xx/Kconfig"

drivers/block/paride/Kconfig

 # SPDX-License-Identifier: GPL-2.0
 #
 # PARIDE configuration
-#
-# PARIDE doesn't need PARPORT, but if PARPORT is configured as a module,
-# PARIDE must also be a module.
-# PARIDE only supports PC style parports. Tough for USB or other parports...
-
-comment "Parallel IDE high-level drivers"
-	depends on PARIDE
-
-config PARIDE_PD
-	tristate "Parallel port IDE disks"
-	depends on PARIDE
-	help
-	  This option enables the high-level driver for IDE-type disk devices
-	  connected through a parallel port. If you chose to build PARIDE
-	  support into your kernel, you may answer Y here to build in the
-	  parallel port IDE driver, otherwise you should answer M to build
-	  it as a loadable module. The module will be called pd. You
-	  must also have at least one parallel port protocol driver in your
-	  system. Among the devices supported by this driver are the SyQuest
-	  EZ-135, EZ-230 and SparQ drives, the Avatar Shark and the backpack
-	  hard drives from MicroSolutions.
-
-config PARIDE_PCD
-	tristate "Parallel port ATAPI CD-ROMs"
-	depends on PARIDE
-	select CDROM
-	help
-	  This option enables the high-level driver for ATAPI CD-ROM devices
-	  connected through a parallel port. If you chose to build PARIDE
-	  support into your kernel, you may answer Y here to build in the
-	  parallel port ATAPI CD-ROM driver, otherwise you should answer M to
-	  build it as a loadable module. The module will be called pcd. You
-	  must also have at least one parallel port protocol driver in your
-	  system. Among the devices supported by this driver are the
-	  MicroSolutions backpack CD-ROM drives and the Freecom Power CD. If
-	  you have such a CD-ROM drive, you should also say Y or M to "ISO
-	  9660 CD-ROM file system support" below, because that's the file
-	  system used on CD-ROMs.
-
-config PARIDE_PF
-	tristate "Parallel port ATAPI disks"
-	depends on PARIDE
-	help
-	  This option enables the high-level driver for ATAPI disk devices
-	  connected through a parallel port. If you chose to build PARIDE
-	  support into your kernel, you may answer Y here to build in the
-	  parallel port ATAPI disk driver, otherwise you should answer M
-	  to build it as a loadable module. The module will be called pf.
-	  You must also have at least one parallel port protocol driver in
-	  your system. Among the devices supported by this driver are the
-	  MicroSolutions backpack PD/CD drive and the Imation Superdisk
-	  LS-120 drive.
-
-config PARIDE_PT
-	tristate "Parallel port ATAPI tapes"
-	depends on PARIDE
-	help
-	  This option enables the high-level driver for ATAPI tape devices
-	  connected through a parallel port. If you chose to build PARIDE
-	  support into your kernel, you may answer Y here to build in the
-	  parallel port ATAPI disk driver, otherwise you should answer M
-	  to build it as a loadable module. The module will be called pt.
-	  You must also have at least one parallel port protocol driver in
-	  your system. Among the devices supported by this driver is the
-	  parallel port version of the HP 5GB drive.
-
-config PARIDE_PG
-	tristate "Parallel port generic ATAPI devices"
-	depends on PARIDE
-	help
-	  This option enables a special high-level driver for generic ATAPI
-	  devices connected through a parallel port. The driver allows user
-	  programs, such as cdrtools, to send ATAPI commands directly to a
-	  device.
-
-	  If you chose to build PARIDE support into your kernel, you may
-	  answer Y here to build in the parallel port generic ATAPI driver,
-	  otherwise you should answer M to build it as a loadable module. The
-	  module will be called pg.
-
-	  You must also have at least one parallel port protocol driver in
-	  your system.
-
-	  This driver implements an API loosely related to the generic SCSI
-	  driver. See <file:include/linux/pg.h>. for details.
-
-	  You can obtain the most recent version of cdrtools from
-	  <ftp://ftp.berlios.de/pub/cdrecord/>. Versions 1.6.1a3 and
-	  later fully support this driver.
 
 comment "Parallel IDE protocol modules"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 
 config PARIDE_ATEN
 	tristate "ATEN EH-100 protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the ATEN EH-100 parallel port IDE
 	  protocol. This protocol is used in some inexpensive low performance
@@ -109,7 +20,7 @@ config PARIDE_ATEN
 
 config PARIDE_BPCK
 	tristate "MicroSolutions backpack (Series 5) protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the Micro Solutions BACKPACK
 	  parallel port Series 5 IDE protocol.  (Most BACKPACK drives made
@@ -127,7 +38,7 @@ config PARIDE_BPCK
 
 config PARIDE_BPCK6
 	tristate "MicroSolutions backpack (Series 6) protocol"
-	depends on (PARIDE || PATA_PARPORT) && !64BIT
+	depends on (PATA_PARPORT) && !64BIT
 	help
 	  This option enables support for the Micro Solutions BACKPACK
 	  parallel port Series 6 IDE protocol.  (Most BACKPACK drives made
@@ -146,7 +57,7 @@ config PARIDE_BPCK6
 
 config PARIDE_COMM
 	tristate "DataStor Commuter protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the Commuter parallel port IDE
 	  protocol from DataStor. If you chose to build PARIDE support
@@ -157,7 +68,7 @@ config PARIDE_COMM
 
 config PARIDE_DSTR
 	tristate "DataStor EP-2000 protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the EP-2000 parallel port IDE
 	  protocol from DataStor. If you chose to build PARIDE support
@@ -168,7 +79,7 @@ config PARIDE_DSTR
 
 config PARIDE_FIT2
 	tristate "FIT TD-2000 protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the TD-2000 parallel port IDE
 	  protocol from Fidelity International Technology. This is a simple
@@ -181,7 +92,7 @@ config PARIDE_FIT2
 
 config PARIDE_FIT3
 	tristate "FIT TD-3000 protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the TD-3000 parallel port IDE
 	  protocol from Fidelity International Technology. This protocol is
@@ -194,7 +105,7 @@ config PARIDE_FIT3
 
 config PARIDE_EPAT
 	tristate "Shuttle EPAT/EPEZ protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the EPAT parallel port IDE protocol.
 	  EPAT is a parallel port IDE adapter manufactured by Shuttle
@@ -216,7 +127,7 @@ config PARIDE_EPATC8
 
 config PARIDE_EPIA
 	tristate "Shuttle EPIA protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the (obsolete) EPIA parallel port
 	  IDE protocol from Shuttle Technology. This adapter can still be
@@ -228,7 +139,7 @@ config PARIDE_EPIA
 
 config PARIDE_FRIQ
 	tristate "Freecom IQ ASIC-2 protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for version 2 of the Freecom IQ parallel
 	  port IDE adapter.  This adapter is used by the Maxell Superdisk
@@ -240,7 +151,7 @@ config PARIDE_FRIQ
 
 config PARIDE_FRPW
 	tristate "FreeCom power protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the Freecom power parallel port IDE
 	  protocol. If you chose to build PARIDE support into your kernel, you
@@ -251,7 +162,7 @@ config PARIDE_FRPW
 
 config PARIDE_KBIC
 	tristate "KingByte KBIC-951A/971A protocols"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the KBIC-951A and KBIC-971A parallel
 	  port IDE protocols from KingByte Information Corp. KingByte's
@@ -264,7 +175,7 @@ config PARIDE_KBIC
 
 config PARIDE_KTTI
 	tristate "KT PHd protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the "PHd" parallel port IDE protocol
 	  from KT Technology. This is a simple (low speed) adapter that is
@@ -277,7 +188,7 @@ config PARIDE_KTTI
 
 config PARIDE_ON20
 	tristate "OnSpec 90c20 protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the (obsolete) 90c20 parallel port
 	  IDE protocol from OnSpec (often marketed under the ValuStore brand
@@ -289,7 +200,7 @@ config PARIDE_ON20
 
 config PARIDE_ON26
 	tristate "OnSpec 90c26 protocol"
-	depends on PARIDE || PATA_PARPORT
+	depends on PATA_PARPORT
 	help
 	  This option enables support for the 90c26 parallel port IDE protocol
 	  from OnSpec Electronics (often marketed under the ValuStore brand

drivers/block/paride/Makefile

@@ -6,7 +6,6 @@
 # Rewritten to use lists instead of if-statements.
 #
 
-obj-$(CONFIG_PARIDE)		+= paride.o
 obj-$(CONFIG_PARIDE_ATEN)	+= aten.o
 obj-$(CONFIG_PARIDE_BPCK)	+= bpck.o
 obj-$(CONFIG_PARIDE_COMM)	+= comm.o
@@ -22,8 +21,3 @@ obj-$(CONFIG_PARIDE_ON20)	+= on20.o
 obj-$(CONFIG_PARIDE_ON26)	+= on26.o
 obj-$(CONFIG_PARIDE_KTTI)	+= ktti.o
 obj-$(CONFIG_PARIDE_BPCK6)	+= bpck6.o
-obj-$(CONFIG_PARIDE_PD)		+= pd.o
-obj-$(CONFIG_PARIDE_PCD)	+= pcd.o
-obj-$(CONFIG_PARIDE_PF)		+= pf.o
-obj-$(CONFIG_PARIDE_PT)		+= pt.o
-obj-$(CONFIG_PARIDE_PG)		+= pg.o

drivers/block/paride/Transition-notes

-Lemma 1:
-	If ps_tq is scheduled, ps_tq_active is 1.  ps_tq_int() can be called
-	only when ps_tq_active is 1.
-Proof:	All assignments to ps_tq_active and all scheduling of ps_tq happen
-	under ps_spinlock.  There are three places where that can happen:
-	one in ps_set_intr() (A) and two in ps_tq_int() (B and C).
-	Consider the sequnce of these events.  A can not be preceded by
-	anything except B, since it is under if (!ps_tq_active) under
-	ps_spinlock.  C is always preceded by B, since we can't reach it
-	other than through B and we don't drop ps_spinlock between them.
-	IOW, the sequence is A?(BA|BC|B)*.  OTOH, number of B can not exceed
-	the sum of numbers of A and C, since each call of ps_tq_int() is
-	the result of ps_tq execution.  Therefore, the sequence starts with
-	A and each B is preceded by either A or C.  Moments when we enter
-	ps_tq_int() are sandwiched between {A,C} and B in that sequence,
-	since at any time number of B can not exceed the number of these
-	moments which, in turn, can not exceed the number of A and C.
-	In other words, the sequence of events is (A or C set ps_tq_active to
-	1 and schedule ps_tq, ps_tq is executed, ps_tq_int() is entered,
-	B resets ps_tq_active)*.
-
-
-consider the following area:
-	* in do_pd_request1(): to calls of pi_do_claimed() and return in
-	  case when pd_req is NULL.
-	* in next_request(): to call of do_pd_request1()
-	* in do_pd_read(): to call of ps_set_intr()
-	* in do_pd_read_start(): to calls of pi_do_claimed(), next_request()
-and ps_set_intr()
-	* in do_pd_read_drq(): to calls of pi_do_claimed() and next_request()
-	* in do_pd_write(): to call of ps_set_intr()
-	* in do_pd_write_start(): to calls of pi_do_claimed(), next_request()
-and ps_set_intr()
-	* in do_pd_write_done(): to calls of pi_do_claimed() and next_request()
-	* in ps_set_intr(): to check for ps_tq_active and to scheduling
-	  ps_tq if ps_tq_active was 0.
-	* in ps_tq_int(): from the moment when we get ps_spinlock() to the
-	  return, call of con() or scheduling ps_tq.
-	* in pi_schedule_claimed() when called from pi_do_claimed() called from
-	  pd.c, everything until returning 1 or setting or setting ->claim_cont
-	  on the path that returns 0
-	* in pi_do_claimed() when called from pd.c, everything until the call
-	  of pi_do_claimed() plus the everything until the call of cont() if
-	  pi_do_claimed() has returned 1.
-	* in pi_wake_up() called for PIA that belongs to pd.c, everything from
-	  the moment when pi_spinlock has been acquired.
-
-Lemma 2:
-	1) at any time at most one thread of execution can be in that area or
-	be preempted there.
-	2) When there is such a thread, pd_busy is set or pd_lock is held by
-	that thread.
-	3) When there is such a thread, ps_tq_active is 0 or ps_spinlock is
-	held by that thread.
-	4) When there is such a thread, all PIA belonging to pd.c have NULL
-	->claim_cont or pi_spinlock is held by thread in question.
-
-Proof:	consider the first moment when the above is not true.
-
-(1) can become not true if some thread enters that area while another is there.
-	a) do_pd_request1() can be called from next_request() or do_pd_request()
-	   In the first case the thread was already in the area.  In the second,
-	   the thread was holding pd_lock and found pd_busy not set, which would
-	   mean that (2) was already not true.
-	b) ps_set_intr() and pi_schedule_claimed() can be called only from the
-	   area.
-	c) pi_do_claimed() is called by pd.c only from the area.
-	d) ps_tq_int() can enter the area only when the thread is holding
-	   ps_spinlock and ps_tq_active is 1 (due to Lemma 1).  It means that
-	   (3) was already not true.
-	e) do_pd_{read,write}* could be called only from the area.  The only
-	   case that needs consideration is call from pi_wake_up() and there
-	   we would have to be called for the PIA that got ->claimed_cont
-	   from pd.c.  That could happen only if pi_do_claimed() had been
-	   called from pd.c for that PIA, which happens only for PIA belonging
-	   to pd.c.
-	f) pi_wake_up() can enter the area only when the thread is holding
-	   pi_spinlock and ->claimed_cont is non-NULL for PIA belonging to
-	   pd.c.  It means that (4) was already not true.
-
-(2) can become not true only when pd_lock is released by the thread in question.
-	Indeed, pd_busy is reset only in the area and thread that resets
-	it is holding pd_lock.	The only place within the area where we
-	release pd_lock is in pd_next_buf() (called from within the area).
-	But that code does not reset pd_busy, so pd_busy would have to be
-	0 when pd_next_buf() had acquired pd_lock.  If it become 0 while
-	we were acquiring the lock, (1) would be already false, since
-	the thread that had reset it would be in the area simulateously.
-	If it was 0 before we tried to acquire pd_lock, (2) would be
-	already false.
-
-For similar reasons, (3) can become not true only when ps_spinlock is released
-by the thread in question.  However, all such places within the area are right
-after resetting ps_tq_active to 0.
-
-(4) is done the same way - all places where we release pi_spinlock within
-the area are either after resetting ->claimed_cont to NULL while holding
-pi_spinlock, or after not tocuhing ->claimed_cont since acquiring pi_spinlock
-also in the area.  The only place where ->claimed_cont is made non-NULL is
-in the area, under pi_spinlock and we do not release it until after leaving
-the area.
-
-QED.
-
-
-Corollary 1: ps_tq_active can be killed.  Indeed, the only place where we
-check its value is in ps_set_intr() and if it had been non-zero at that
-point, we would have violated either (2.1) (if it was set while ps_set_intr()
-was acquiring ps_spinlock) or (2.3) (if it was set when we started to
-acquire ps_spinlock).
-
-Corollary 2: ps_spinlock can be killed.  Indeed, Lemma 1 and Lemma 2 show
-that the only possible contention is between scheduling ps_tq followed by
-immediate release of spinlock and beginning of execution of ps_tq on
-another CPU.
-
-Corollary 3: assignment to pd_busy in do_pd_read_start() and do_pd_write_start()
-can be killed.  Indeed, we are not holding pd_lock and thus pd_busy is already
-1 here.
-
-Corollary 4: in ps_tq_int() uses of con can be replaced with uses of
-ps_continuation, since the latter is changed only from the area.
-We don't need to reset it to NULL, since we are guaranteed that there
-will be a call of ps_set_intr() before we look at ps_continuation again.
-We can remove the check for ps_continuation being NULL for the same
-reason - the value is guaranteed to be set by the last ps_set_intr() and
-we never pass it NULL.  Assignements in the beginning of ps_set_intr()
-can be taken to callers as long as they remain within the area.

drivers/block/paride/aten.c

@@ -25,7 +25,7 @@
 #include <linux/types.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define j44(a,b)                ((((a>>4)&0x0f)|(b&0xf0))^0x88)
 

drivers/block/paride/bpck.c

@@ -24,7 +24,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #undef r2
 #undef w2

drivers/block/paride/bpck6.c

@@ -31,7 +31,7 @@
 #include <linux/parport.h>
 
 #include "ppc6lnx.c"
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 /* PARAMETERS */
 static bool verbose; /* set this to 1 to see debugging messages and whatnot */

drivers/block/paride/comm.c

@@ -24,7 +24,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 /* mode codes:  0  nybble reads, 8-bit writes
                 1  8-bit reads and writes

drivers/block/paride/dstr.c

@@ -23,7 +23,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 /* mode codes:  0  nybble reads, 8-bit writes
                 1  8-bit reads and writes

drivers/block/paride/epat.c

@@ -26,7 +26,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define j44(a,b)		(((a>>4)&0x0f)+(b&0xf0))
 #define j53(a,b)		(((a>>3)&0x1f)+((b<<4)&0xe0))

drivers/block/paride/epia.c

@@ -27,7 +27,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 /* mode codes:  0  nybble reads on port 1, 8-bit writes
                 1  5/3 reads on ports 1 & 2, 8-bit writes

drivers/block/paride/fit2.c

@@ -23,7 +23,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define j44(a,b)                (((a>>4)&0x0f)|(b&0xf0))
 

drivers/block/paride/fit3.c

@@ -27,7 +27,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define j44(a,b)                (((a>>3)&0x0f)|((b<<1)&0xf0))
 

drivers/block/paride/friq.c

@@ -35,7 +35,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define CMD(x)		w2(4);w0(0xff);w0(0xff);w0(0x73);w0(0x73);\
 			w0(0xc9);w0(0xc9);w0(0x26);w0(0x26);w0(x);w0(x);

drivers/block/paride/frpw.c

@@ -33,7 +33,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define cec4		w2(0xc);w2(0xe);w2(0xe);w2(0xc);w2(4);w2(4);w2(4);
 #define j44(l,h)	(((l>>4)&0x0f)|(h&0xf0))

drivers/block/paride/kbic.c

@@ -28,7 +28,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define r12w()			(delay_p,inw(pi->port+1)&0xffff) 
 

drivers/block/paride/ktti.c

@@ -19,7 +19,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define j44(a,b)                (((a>>4)&0x0f)|(b&0xf0))
 

drivers/block/paride/mkd

-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-#
-# mkd -- a script to create the device special files for the PARIDE subsystem
-#
-#  block devices:  	pd (45), pcd (46), pf (47)
-#  character devices:	pt (96), pg (97)
-#
-function mkdev {
-  mknod $1 $2 $3 $4 ; chmod 0660 $1 ; chown root:disk $1
-}
-#
-function pd {
-  D=$( printf \\$( printf "x%03x" $[ $1 + 97 ] ) )
-  mkdev pd$D b 45 $[ $1 * 16 ]
-  for P in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-  do mkdev pd$D$P b 45 $[ $1 * 16 + $P ]
-  done
-}
-#
-cd /dev
-#
-for u in 0 1 2 3 ; do pd $u ; done
-for u in 0 1 2 3 ; do mkdev pcd$u b 46 $u ; done 
-for u in 0 1 2 3 ; do mkdev pf$u  b 47 $u ; done 
-for u in 0 1 2 3 ; do mkdev pt$u  c 96 $u ; done 
-for u in 0 1 2 3 ; do mkdev npt$u c 96 $[ $u + 128 ] ; done 
-for u in 0 1 2 3 ; do mkdev pg$u  c 97 $u ; done
-#
-# end of mkd
-

drivers/block/paride/on20.c

@@ -22,7 +22,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 #define op(f)	w2(4);w0(f);w2(5);w2(0xd);w2(5);w2(0xd);w2(5);w2(4);
 #define vl(v)	w2(4);w0(v);w2(5);w2(7);w2(5);w2(4);

drivers/block/paride/on26.c

@@ -26,7 +26,7 @@
 #include <linux/wait.h>
 #include <asm/io.h>
 
-#include "paride.h"
+#include <linux/pata_parport.h>
 
 /* mode codes:  0  nybble reads, 8-bit writes
                 1  8-bit reads and writes

drivers/block/paride/paride.c

-/* 
-        paride.c  (c) 1997-8  Grant R. Guenther <grant@torque.net>
-                              Under the terms of the GNU General Public License.
-
-	This is the base module for the family of device drivers
-        that support parallel port IDE devices.  
-
-*/
-
-/* Changes:
-
-	1.01	GRG 1998.05.03	Use spinlocks
-	1.02	GRG 1998.05.05  init_proto, release_proto, ktti
-	1.03	GRG 1998.08.15  eliminate compiler warning
-	1.04    GRG 1998.11.28  added support for FRIQ 
-	1.05    TMW 2000.06.06  use parport_find_number instead of
-				parport_enumerate
-	1.06    TMW 2001.03.26  more sane parport-or-not resource management
-*/
-
-#define PI_VERSION      "1.06"
-
-#include <linux/module.h>
-#include <linux/kmod.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-#include <linux/sched.h>	/* TASK_* */
-#include <linux/parport.h>
-#include <linux/slab.h>
-
-#include "paride.h"
-
-MODULE_LICENSE("GPL");
-
-#define MAX_PROTOS	32
-
-static struct pi_protocol *protocols[MAX_PROTOS];
-
-static DEFINE_SPINLOCK(pi_spinlock);
-
-void pi_write_regr(PIA * pi, int cont, int regr, int val)
-{
-	pi->proto->write_regr(pi, cont, regr, val);
-}
-
-EXPORT_SYMBOL(pi_write_regr);
-
-int pi_read_regr(PIA * pi, int cont, int regr)
-{
-	return pi->proto->read_regr(pi, cont, regr);
-}
-
-EXPORT_SYMBOL(pi_read_regr);
-
-void pi_write_block(PIA * pi, char *buf, int count)
-{
-	pi->proto->write_block(pi, buf, count);
-}
-
-EXPORT_SYMBOL(pi_write_block);
-
-void pi_read_block(PIA * pi, char *buf, int count)
-{
-	pi->proto->read_block(pi, buf, count);
-}
-
-EXPORT_SYMBOL(pi_read_block);
-
-static void pi_wake_up(void *p)
-{
-	PIA *pi = (PIA *) p;
-	unsigned long flags;
-	void (*cont) (void) = NULL;
-
-	spin_lock_irqsave(&pi_spinlock, flags);
-
-	if (pi->claim_cont && !parport_claim(pi->pardev)) {
-		cont = pi->claim_cont;
-		pi->claim_cont = NULL;
-		pi->claimed = 1;
-	}
-
-	spin_unlock_irqrestore(&pi_spinlock, flags);
-
-	wake_up(&(pi->parq));
-
-	if (cont)
-		cont();
-}
-
-int pi_schedule_claimed(PIA * pi, void (*cont) (void))
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&pi_spinlock, flags);
-	if (pi->pardev && parport_claim(pi->pardev)) {
-		pi->claim_cont = cont;
-		spin_unlock_irqrestore(&pi_spinlock, flags);
-		return 0;
-	}
-	pi->claimed = 1;
-	spin_unlock_irqrestore(&pi_spinlock, flags);
-	return 1;
-}
-EXPORT_SYMBOL(pi_schedule_claimed);
-
-void pi_do_claimed(PIA * pi, void (*cont) (void))
-{
-	if (pi_schedule_claimed(pi, cont))
-		cont();
-}
-
-EXPORT_SYMBOL(pi_do_claimed);
-
-static void pi_claim(PIA * pi)
-{
-	if (pi->claimed)
-		return;
-	pi->claimed = 1;
-	if (pi->pardev)
-		wait_event(pi->parq,
-			   !parport_claim((struct pardevice *) pi->pardev));
-}
-
-static void pi_unclaim(PIA * pi)
-{
-	pi->claimed = 0;
-	if (pi->pardev)
-		parport_release((struct pardevice *) (pi->pardev));
-}
-
-void pi_connect(PIA * pi)
-{
-	pi_claim(pi);
-	pi->proto->connect(pi);
-}
-
-EXPORT_SYMBOL(pi_connect);
-
-void pi_disconnect(PIA * pi)
-{
-	pi->proto->disconnect(pi);
-	pi_unclaim(pi);
-}
-
-EXPORT_SYMBOL(pi_disconnect);
-
-static void pi_unregister_parport(PIA * pi)
-{
-	if (pi->pardev) {
-		parport_unregister_device((struct pardevice *) (pi->pardev));
-		pi->pardev = NULL;
-	}
-}
-
-void pi_release(PIA * pi)
-{
-	pi_unregister_parport(pi);
-	if (pi->proto->release_proto)
-		pi->proto->release_proto(pi);
-	module_put(pi->proto->owner);
-}
-
-EXPORT_SYMBOL(pi_release);
-
-static int default_test_proto(PIA * pi, char *scratch, int verbose)
-{
-	int j, k;
-	int e[2] = { 0, 0 };
-
-	pi->proto->connect(pi);
-
-	for (j = 0; j < 2; j++) {
-		pi_write_regr(pi, 0, 6, 0xa0 + j * 0x10);
-		for (k = 0; k < 256; k++) {
-			pi_write_regr(pi, 0, 2, k ^ 0xaa);
-			pi_write_regr(pi, 0, 3, k ^ 0x55);
-			if (pi_read_regr(pi, 0, 2) != (k ^ 0xaa))
-				e[j]++;
-		}
-	}
-	pi->proto->disconnect(pi);
-
-	if (verbose)
-		printk("%s: %s: port 0x%x, mode  %d, test=(%d,%d)\n",
-		       pi->device, pi->proto->name, pi->port,
-		       pi->mode, e[0], e[1]);
-
-	return (e[0] && e[1]);	/* not here if both > 0 */
-}
-
-static int pi_test_proto(PIA * pi, char *scratch, int verbose)
-{
-	int res;
-
-	pi_claim(pi);
-	if (pi->proto->test_proto)
-		res = pi->proto->test_proto(pi, scratch, verbose);
-	else
-		res = default_test_proto(pi, scratch, verbose);
-	pi_unclaim(pi);
-
-	return res;
-}
-
-int paride_register(PIP * pr)
-{
-	int k;
-
-	for (k = 0; k < MAX_PROTOS; k++)
-		if (protocols[k] && !strcmp(pr->name, protocols[k]->name)) {
-			printk("paride: %s protocol already registered\n",
-			       pr->name);
-			return -1;
-		}
-	k = 0;
-	while ((k < MAX_PROTOS) && (protocols[k]))
-		k++;
-	if (k == MAX_PROTOS) {
-		printk("paride: protocol table full\n");
-		return -1;
-	}
-	protocols[k] = pr;
-	pr->index = k;
-	printk("paride: %s registered as protocol %d\n", pr->name, k);
-	return 0;
-}
-
-EXPORT_SYMBOL(paride_register);
-
-void paride_unregister(PIP * pr)
-{
-	if (!pr)
-		return;
-	if (protocols[pr->index] != pr) {
-		printk("paride: %s not registered\n", pr->name);
-		return;
-	}
-	protocols[pr->index] = NULL;
-}
-
-EXPORT_SYMBOL(paride_unregister);
-
-static int pi_register_parport(PIA *pi, int verbose, int unit)
-{
-	struct parport *port;
-	struct pardev_cb par_cb;
-
-	port = parport_find_base(pi->port);
-	if (!port)
-		return 0;
-	memset(&par_cb, 0, sizeof(par_cb));
-	par_cb.wakeup = pi_wake_up;
-	par_cb.private = (void *)pi;
-	pi->pardev = parport_register_dev_model(port, pi->device, &par_cb,
-						unit);
-	parport_put_port(port);
-	if (!pi->pardev)
-		return 0;
-
-	init_waitqueue_head(&pi->parq);
-
-	if (verbose)
-		printk("%s: 0x%x is %s\n", pi->device, pi->port, port->name);
-
-	pi->parname = (char *) port->name;
-
-	return 1;
-}
-
-static int pi_probe_mode(PIA * pi, int max, char *scratch, int verbose)
-{
-	int best, range;
-
-	if (pi->mode != -1) {
-		if (pi->mode >= max)
-			return 0;
-		range = 3;
-		if (pi->mode >= pi->proto->epp_first)
-			range = 8;
-		if ((range == 8) && (pi->port % 8))
-			return 0;
-		pi->reserved = range;
-		return (!pi_test_proto(pi, scratch, verbose));
-	}
-	best = -1;
-	for (pi->mode = 0; pi->mode < max; pi->mode++) {
-		range = 3;
-		if (pi->mode >= pi->proto->epp_first)
-			range = 8;
-		if ((range == 8) && (pi->port % 8))
-			break;
-		pi->reserved = range;
-		if (!pi_test_proto(pi, scratch, verbose))
-			best = pi->mode;
-	}
-	pi->mode = best;
-	return (best > -1);
-}
-
-static int pi_probe_unit(PIA * pi, int unit, char *scratch, int verbose)
-{
-	int max, s, e;
-
-	s = unit;
-	e = s + 1;
-
-	if (s == -1) {
-		s = 0;
-		e = pi->proto->max_units;
-	}
-
-	if (!pi_register_parport(pi, verbose, s))
-		return 0;
-
-	if (pi->proto->test_port) {
-		pi_claim(pi);
-		max = pi->proto->test_port(pi);
-		pi_unclaim(pi);
-	} else
-		max = pi->proto->max_mode;
-
-	if (pi->proto->probe_unit) {
-		pi_claim(pi);
-		for (pi->unit = s; pi->unit < e; pi->unit++)
-			if (pi->proto->probe_unit(pi)) {
-				pi_unclaim(pi);
-				if (pi_probe_mode(pi, max, scratch, verbose))
-					return 1;
-				pi_unregister_parport(pi);
-				return 0;
-			}
-		pi_unclaim(pi);
-		pi_unregister_parport(pi);
-		return 0;
-	}
-
-	if (!pi_probe_mode(pi, max, scratch, verbose)) {
-		pi_unregister_parport(pi);
-		return 0;
-	}
-	return 1;
-
-}
-
-int pi_init(PIA * pi, int autoprobe, int port, int mode,
-	int unit, int protocol, int delay, char *scratch,
-	int devtype, int verbose, char *device)
-{
-	int p, k, s, e;
-	int lpts[7] = { 0x3bc, 0x378, 0x278, 0x268, 0x27c, 0x26c, 0 };
-
-	s = protocol;
-	e = s + 1;
-
-	if (!protocols[0])
-		request_module("paride_protocol");
-
-	if (autoprobe) {
-		s = 0;
-		e = MAX_PROTOS;
-	} else if ((s < 0) || (s >= MAX_PROTOS) || (port <= 0) ||
-		   (!protocols[s]) || (unit < 0) ||
-		   (unit >= protocols[s]->max_units)) {
-		printk("%s: Invalid parameters\n", device);
-		return 0;
-	}
-
-	for (p = s; p < e; p++) {
-		struct pi_protocol *proto = protocols[p];
-		if (!proto)
-			continue;
-		/* still racy */
-		if (!try_module_get(proto->owner))
-			continue;
-		pi->proto = proto;
-		pi->private = 0;
-		if (proto->init_proto && proto->init_proto(pi) < 0) {
-			pi->proto = NULL;
-			module_put(proto->owner);
-			continue;
-		}
-		if (delay == -1)
-			pi->delay = pi->proto->default_delay;
-		else
-			pi->delay = delay;
-		pi->devtype = devtype;
-		pi->device = device;
-
-		pi->parname = NULL;
-		pi->pardev = NULL;
-		init_waitqueue_head(&pi->parq);
-		pi->claimed = 0;
-		pi->claim_cont = NULL;
-
-		pi->mode = mode;
-		if (port != -1) {
-			pi->port = port;
-			if (pi_probe_unit(pi, unit, scratch, verbose))
-				break;
-			pi->port = 0;
-		} else {
-			k = 0;
-			while ((pi->port = lpts[k++]))
-				if (pi_probe_unit
-				    (pi, unit, scratch, verbose))
-					break;
-			if (pi->port)
-				break;
-		}
-		if (pi->proto->release_proto)
-			pi->proto->release_proto(pi);
-		module_put(proto->owner);
-	}
-
-	if (!pi->port) {
-		if (autoprobe)
-			printk("%s: Autoprobe failed\n", device);
-		else
-			printk("%s: Adapter not found\n", device);
-		return 0;
-	}
-
-	if (pi->parname)
-		printk("%s: Sharing %s at 0x%x\n", pi->device,
-		       pi->parname, pi->port);
-
-	pi->proto->log_adapter(pi, scratch, verbose);
-
-	return 1;
-}
-
-EXPORT_SYMBOL(pi_init);
-
-static int pi_probe(struct pardevice *par_dev)
-{
-	struct device_driver *drv = par_dev->dev.driver;
-	int len = strlen(drv->name);
-
-	if (strncmp(par_dev->name, drv->name, len))
-		return -ENODEV;
-
-	return 0;
-}
-
-void *pi_register_driver(char *name)
-{
-	struct parport_driver *parp_drv;
-	int ret;
-
-	parp_drv = kzalloc(sizeof(*parp_drv), GFP_KERNEL);
-	if (!parp_drv)
-		return NULL;
-
-	parp_drv->name = name;
-	parp_drv->probe = pi_probe;
-	parp_drv->devmodel = true;
-
-	ret = parport_register_driver(parp_drv);
-	if (ret) {
-		kfree(parp_drv);
-		return NULL;
-	}
-	return (void *)parp_drv;
-}
-EXPORT_SYMBOL(pi_register_driver);
-
-void pi_unregister_driver(void *_drv)
-{
-	struct parport_driver *drv = _drv;
-
-	parport_unregister_driver(drv);
-	kfree(drv);
-}
-EXPORT_SYMBOL(pi_unregister_driver);

drivers/block/paride/paride.h

-/*
- * The low-level protocol modules are used by either paride or pata_parport.
- * These two are mutually exclusive because the compiled low-level protocol
- * modules are not compatible.
- * When PATA_PARPORT is enabled, include pata_parport.h instead of the rest
- * of this file.
- */
-
-#if IS_ENABLED(CONFIG_PATA_PARPORT)
-#include <linux/pata_parport.h>
-
-#else
-#ifndef __DRIVERS_PARIDE_H__
-#define __DRIVERS_PARIDE_H__
-
-/* 
-	paride.h	(c) 1997-8  Grant R. Guenther <grant@torque.net>
-   		                    Under the terms of the GPL.
-
-   This file defines the interface between the high-level parallel
-   IDE device drivers (pd, pf, pcd, pt) and the adapter chips.
-
-*/
-
-/* Changes:
-
-	1.01	GRG 1998.05.05	init_proto, release_proto
-*/
-
-#define PARIDE_H_VERSION 	"1.01"
-
-/* Some adapters need to know what kind of device they are in
-
-   Values for devtype:
-*/
-
-#define	PI_PD	0	/* IDE disk */
-#define PI_PCD	1	/* ATAPI CDrom */
-#define PI_PF   2	/* ATAPI disk */
-#define PI_PT	3	/* ATAPI tape */
-#define PI_PG   4       /* ATAPI generic */
-
-/* The paride module contains no state, instead the drivers allocate
-   a pi_adapter data structure and pass it to paride in every operation.
-
-*/
-
-struct pi_adapter  {
-
-	struct pi_protocol *proto;   /* adapter protocol */
-	int	port;		     /* base address of parallel port */
-	int	mode;		     /* transfer mode in use */
-	int     delay;		     /* adapter delay setting */
-	int	devtype;	     /* device type: PI_PD etc. */
-	char    *device;	     /* name of driver */
-	int     unit;		     /* unit number for chained adapters */
-	int	saved_r0;	     /* saved port state */
-	int	saved_r2;	     /* saved port state */
-	int	reserved;	     /* number of ports reserved */
-	unsigned long	private;     /* for protocol module */
-
-	wait_queue_head_t parq;     /* semaphore for parport sharing */
-	void	*pardev;	     /* pointer to pardevice */
-	char	*parname;	     /* parport name */
-	int	claimed;	     /* parport has already been claimed */
-	void (*claim_cont)(void);    /* continuation for parport wait */
-};
-
-typedef struct pi_adapter PIA;
-
-/* functions exported by paride to the high level drivers */
-
-extern int pi_init(PIA *pi, 
-	int autoprobe,		/* 1 to autoprobe */
-	int port, 		/* base port address */
-	int mode, 		/* -1 for autoprobe */
-	int unit,		/* unit number, if supported */
-	int protocol, 		/* protocol to use */
-	int delay, 		/* -1 to use adapter specific default */
-	char * scratch, 	/* address of 512 byte buffer */
-	int devtype,		/* device type: PI_PD, PI_PCD, etc ... */
-	int verbose,		/* log verbose data while probing */
-	char *device		/* name of the driver */
-	);			/* returns 0 on failure, 1 on success */
-
-extern void pi_release(PIA *pi);
-
-/* registers are addressed as (cont,regr)
-
-       	cont: 0 for command register file, 1 for control register(s)
-	regr: 0-7 for register number.
-
-*/
-
-extern void pi_write_regr(PIA *pi, int cont, int regr, int val);
-
-extern int pi_read_regr(PIA *pi, int cont, int regr);
-
-extern void pi_write_block(PIA *pi, char * buf, int count);
-
-extern void pi_read_block(PIA *pi, char * buf, int count);
-
-extern void pi_connect(PIA *pi);
-
-extern void pi_disconnect(PIA *pi);
-
-extern void pi_do_claimed(PIA *pi, void (*cont)(void));
-extern int pi_schedule_claimed(PIA *pi, void (*cont)(void));
-
-/* macros and functions exported to the protocol modules */
-
-#define delay_p			(pi->delay?udelay(pi->delay):(void)0)
-#define out_p(offs,byte)	outb(byte,pi->port+offs); delay_p;
-#define in_p(offs)		(delay_p,inb(pi->port+offs))
-
-#define w0(byte)                {out_p(0,byte);}
-#define r0()                    (in_p(0) & 0xff)
-#define w1(byte)                {out_p(1,byte);}
-#define r1()                    (in_p(1) & 0xff)
-#define w2(byte)                {out_p(2,byte);}
-#define r2()                    (in_p(2) & 0xff)
-#define w3(byte)                {out_p(3,byte);}
-#define w4(byte)                {out_p(4,byte);}
-#define r4()                    (in_p(4) & 0xff)
-#define w4w(data)     		{outw(data,pi->port+4); delay_p;}
-#define w4l(data)     		{outl(data,pi->port+4); delay_p;}
-#define r4w()         		(delay_p,inw(pi->port+4)&0xffff)
-#define r4l()         		(delay_p,inl(pi->port+4)&0xffffffff)
-
-static inline u16 pi_swab16( char *b, int k)
-
-{ 	union { u16 u; char t[2]; } r;
-
-	r.t[0]=b[2*k+1]; r.t[1]=b[2*k];
-        return r.u;
-}
-
-static inline u32 pi_swab32( char *b, int k)
-
-{ 	union { u32 u; char f[4]; } r;
-
-	r.f[0]=b[4*k+1]; r.f[1]=b[4*k];
-	r.f[2]=b[4*k+3]; r.f[3]=b[4*k+2];
-        return r.u;
-}
-
-struct pi_protocol {
-
-	char	name[8];	/* name for this protocol */
-	int	index;		/* index into protocol table */
-
-	int	max_mode;	/* max mode number */
-	int	epp_first;	/* modes >= this use 8 ports */
-	
-	int	default_delay;  /* delay parameter if not specified */
-	int	max_units;	/* max chained units probed for */
-
-	void (*write_regr)(PIA *,int,int,int);
-	int  (*read_regr)(PIA *,int,int);
-	void (*write_block)(PIA *,char *,int);
-	void (*read_block)(PIA *,char *,int);
-
-	void (*connect)(PIA *);
-	void (*disconnect)(PIA *);
-	
-	int  (*test_port)(PIA *);
-	int  (*probe_unit)(PIA *);
-	int  (*test_proto)(PIA *,char *,int);
-	void (*log_adapter)(PIA *,char *,int);
-	
-	int (*init_proto)(PIA *);
-	void (*release_proto)(PIA *);
-	struct module *owner;
-};
-
-typedef struct pi_protocol PIP;
-
-extern int paride_register( PIP * );
-extern void paride_unregister ( PIP * );
-void *pi_register_driver(char *);
-void pi_unregister_driver(void *);
-
-#endif /* __DRIVERS_PARIDE_H__ */
-/* end of paride.h */
-#endif /* IS_ENABLED(CONFIG_PATA_PARPORT) */