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Commit 7750d8b5 authored by Ondrej Zary's avatar Ondrej Zary Committed by Damien Le Moal
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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: default avatarOndrej Zary <linux@zary.sk>
Acked-by: default avatarJens Axboe <axboe@kernel.dk>
Signed-off-by: default avatarDamien Le Moal <damien.lemoal@opensource.wdc.com>
parent 246a1c4c
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Showing with 110 additions and 6354 deletions
Documentation/admin-guide/kernel-parameters.rst
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
# 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
View file @ 7750d8b5
......@@ -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 deleted 100644 → 0
View file @ 246a1c4c
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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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 deleted 100644 → 0
View file @ 246a1c4c
#!/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
View file @ 7750d8b5
......@@ -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
View file @ 7750d8b5
......@@ -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 deleted 100644 → 0
View file @ 246a1c4c
/*
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 deleted 100644 → 0
View file @ 246a1c4c
/*
* 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) */
drivers/block/paride/pcd.c deleted 100644 → 0
View file @ 246a1c4c
This diff is collapsed.
drivers/block/paride/pd.c deleted 100644 → 0
View file @ 246a1c4c
This diff is collapsed.
drivers/block/paride/pf.c deleted 100644 → 0
View file @ 246a1c4c
This diff is collapsed.
drivers/block/paride/pg.c deleted 100644 → 0
View file @ 246a1c4c
This diff is collapsed.
drivers/block/paride/pseudo.h deleted 100644 → 0
View file @ 246a1c4c
This diff is collapsed.
drivers/block/paride/pt.c deleted 100644 → 0
View file @ 246a1c4c
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