Merge tag 'asm-generic-alpha' of git:https://git.kernel.org/pub/scm/linux/k…

…ernel/git/arnd/asm-generic

Pull alpha updates from Arnd Bergmann:
 "I had investigated dropping support for alpha EV5 and earlier a while
  ago after noticing that this is the only supported CPU family in the
  kernel without native byte access and that Debian has already dropped
  support for this generation last year [1] in order to improve
  performance for the newer machines.

  This topic came up again when Paul McKenney noticed that parts of the
  RCU code already rely on byte access and do not work on alpha EV5
  reliably, so we decided on using my series to avoid the problem
  entirely.

  Al Viro did another series for alpha to address all the known build
  issues. I rebased his patches without any further changes and included
  it as a baseline for my work here to avoid conflicts and allow
  backporting the fixes to stable kernels for the now removed hardware
  support as well"

[ I dearly loved alpha back in the days, but the lack of byte and word
  operations was a horrible mistake and made everything worse -
  including very much the crazy IO contortions that resulted from it.

  It certainly wasn't the only mistake in the architecture, but it's the
  first-order issue.

  So while it's a bit sad to see the support for my first alpha go away,
  if you want to run museum hardware, maybe you should use museum
  kernels..    - Linus ]

* tag 'asm-generic-alpha' of git:https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  alpha: drop pre-EV56 support
  alpha: cabriolet: remove EV5 CPU support
  alpha: remove LCA and APECS based machines
  alpha: sable: remove early machine support
  alpha: remove DECpc AXP150 (Jensen) support
  alpha: trim the unused stuff from asm-offsets.c
  alpha: jensen, t2 - make __EXTERN_INLINE same as for the rest
  alpha: core_lca: take the unused functions out
  alpha: missing includes
  alpha: sys_sio: fix misspelled ifdefs
  alpha: don't make functions public without a reason
  alpha: add clone3() support
  alpha: fix modversions for strcpy() et.al.
  alpha: sort scr_mem{cpy,move}w() out

Documentation/driver-api/eisa.rst

@@ -196,8 +196,8 @@ eisa_bus.disable_dev
 virtual_root.force_probe
  Force the probing code to probe EISA slots even when it cannot find an
  EISA compliant mainboard (nothing appears on slot 0). Defaults to 0
- (don't force), and set to 1 (force probing) when either
- CONFIG_ALPHA_JENSEN or CONFIG_EISA_VLB_PRIMING are set.
+ (don't force), and set to 1 (force probing) when
+ CONFIG_EISA_VLB_PRIMING is set.
 
 Random notes
 ============

arch/alpha/Kconfig

@@ -10,7 +10,7 @@ config ALPHA
  select ARCH_NO_SG_CHAIN
  select ARCH_USE_CMPXCHG_LOCKREF
  select DMA_OPS if PCI
- select FORCE_PCI if !ALPHA_JENSEN
+ select FORCE_PCI
  select PCI_DOMAINS if PCI
  select PCI_SYSCALL if PCI
  select HAVE_ASM_MODVERSIONS
@@ -90,22 +90,11 @@ choice
  <http:https://www.alphalinux.org/>. In summary:
 
  Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
- Alpha-XL XL-233, XL-266
- AlphaBook1 Alpha laptop
- Avanti AS 200, AS 205, AS 250, AS 255, AS 300, AS 400
- Cabriolet AlphaPC64, AlphaPCI64
  DP264 DP264 / DS20 / ES40 / DS10 / DS10L
- EB164 EB164 21164 evaluation board
- EB64+ EB64+ 21064 evaluation board
- EB66 EB66 21066 evaluation board
- EB66+ EB66+ 21066 evaluation board
- Jensen DECpc 150, DEC 2000 models 300, 500
  LX164 AlphaPC164-LX
- Lynx AS 2100A
  Miata Personal Workstation 433/500/600 a/au
  Marvel AlphaServer ES47 / ES80 / GS1280
  Mikasa AS 1000
- Noname AXPpci33, UDB (Multia)
  Noritake AS 1000A, AS 600A, AS 800
  PC164 AlphaPC164
  Rawhide AS 1200, AS 4000, AS 4100
@@ -137,90 +126,25 @@ config ALPHA_ALCOR
  all the work required to support an external Bcache and to maintain
  memory coherence when a PCI device DMAs into (or out of) memory.
 
-config ALPHA_XL
- bool "Alpha-XL"
- help
- XL-233 and XL-266-based Alpha systems.
-
-config ALPHA_BOOK1
- bool "AlphaBook1"
- help
- Dec AlphaBook1/Burns Alpha-based laptops.
-
-config ALPHA_AVANTI_CH
- bool "Avanti"
-
-config ALPHA_CABRIOLET
- bool "Cabriolet"
- help
- Cabriolet AlphaPC64, AlphaPCI64 systems. Derived from EB64+ but now
- baby-AT with Flash boot ROM, no on-board SCSI or Ethernet. 3 ISA
- slots, 4 PCI slots (one pair are on a shared slot), uses plug-in
- Bcache SIMMs. Requires power supply with 3.3V output.
-
 config ALPHA_DP264
  bool "DP264"
  help
  Various 21264 systems with the tsunami core logic chipset.
  API Networks: 264DP, UP2000(+), CS20;
  Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
 
-config ALPHA_EB164
- bool "EB164"
- help
- EB164 21164 evaluation board from DEC. Uses 21164 and ALCOR. Has
- ISA and PCI expansion (3 ISA slots, 2 64-bit PCI slots (one is
- shared with an ISA slot) and 2 32-bit PCI slots. Uses plus-in
- Bcache SIMMs. I/O sub-system provides SuperI/O (2S, 1P, FD), KBD,
- MOUSE (PS2 style), RTC/NVRAM. Boot ROM is Flash. PC-AT-sized
- motherboard. Requires power supply with 3.3V output.
-
-config ALPHA_EB64P_CH
- bool "EB64+"
-
-config ALPHA_EB66
- bool "EB66"
- help
- A Digital DS group board. Uses 21066 or 21066A. I/O sub-system is
- identical to EB64+. Baby PC-AT size. Runs from standard PC power
- supply. The EB66 schematic was published as a marketing poster
- advertising the 21066 as "the first microprocessor in the world with
- embedded PCI".
-
-config ALPHA_EB66P
- bool "EB66+"
- help
- Later variant of the EB66 board.
-
 config ALPHA_EIGER
  bool "Eiger"
  help
  Apparently an obscure OEM single-board computer based on the
  Typhoon/Tsunami chipset family. Information on it is scanty.
 
-config ALPHA_JENSEN
- bool "Jensen"
- select HAVE_EISA
- help
- DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
- of the first-generation Alpha systems. A number of these systems
- seem to be available on the second- hand market. The Jensen is a
- floor-standing tower system which originally used a 150MHz 21064 It
- used programmable logic to interface a 486 EISA I/O bridge to the
- CPU.
-
 config ALPHA_LX164
  bool "LX164"
  help
  A technical overview of this board is available at
  <http:https://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
 
-config ALPHA_LYNX
- bool "Lynx"
- select HAVE_EISA
- help
- AlphaServer 2100A-based systems.
-
 config ALPHA_MARVEL
  bool "Marvel"
  help
@@ -243,9 +167,6 @@ config ALPHA_NAUTILUS
  help
  Alpha systems based on the AMD 751 & ALI 1543C chipsets.
 
-config ALPHA_NONAME_CH
- bool "Noname"
-
 config ALPHA_NORITAKE
  bool "Noritake"
  select HAVE_EISA
@@ -256,9 +177,6 @@ config ALPHA_NORITAKE
 config ALPHA_PC164
  bool "PC164"
 
-config ALPHA_P2K
- bool "Platform2000"
-
 config ALPHA_RAWHIDE
  bool "Rawhide"
  select HAVE_EISA
@@ -322,84 +240,18 @@ config ISA_DMA_API
  bool
  default y
 
-config ALPHA_NONAME
- bool
- depends on ALPHA_BOOK1 || ALPHA_NONAME_CH
- default y
- help
- The AXPpci33 (aka NoName), is based on the EB66 (includes the Multia
- UDB). This design was produced by Digital's Technical OEM (TOEM)
- group. It uses the 21066 processor running at 166MHz or 233MHz. It
- is a baby-AT size, and runs from a standard PC power supply. It has
- 5 ISA slots and 3 PCI slots (one pair are a shared slot). There are
- 2 versions, with either PS/2 or large DIN connectors for the
- keyboard.
-
-config ALPHA_EV4
- bool
- depends on ALPHA_JENSEN || (ALPHA_SABLE && !ALPHA_GAMMA) || ALPHA_LYNX || ALPHA_NORITAKE && !ALPHA_PRIMO || ALPHA_MIKASA && !ALPHA_PRIMO || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL || ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
- default y if !ALPHA_LYNX
- default y if !ALPHA_EV5
-
-config ALPHA_LCA
- bool
- depends on ALPHA_NONAME || ALPHA_EB66 || ALPHA_EB66P || ALPHA_P2K
- default y
-
-config ALPHA_APECS
- bool
- depends on !ALPHA_PRIMO && (ALPHA_NORITAKE || ALPHA_MIKASA) || ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P_CH || ALPHA_XL
- default y
-
-config ALPHA_EB64P
- bool
- depends on ALPHA_CABRIOLET || ALPHA_EB64P_CH
- default y
- help
- Uses 21064 or 21064A and APECs. Has ISA and PCI expansion (3 ISA,
- 2 PCI, one pair are on a shared slot). Supports 36-bit DRAM SIMs.
- ISA bus generated by Intel SaturnI/O PCI-ISA bridge. On-board SCSI
- (NCR 810 on PCI) Ethernet (Digital 21040), KBD, MOUSE (PS2 style),
- SuperI/O (2S, 1P, FD), RTC/NVRAM. Boot ROM is EPROM. PC-AT size.
- Runs from standard PC power supply.
-
-config ALPHA_EV5
- bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_LYNX
- default y if ALPHA_RX164 || ALPHA_RAWHIDE || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_SABLE && ALPHA_GAMMA || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
-
 config ALPHA_CIA
  bool
- depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE && ALPHA_PRIMO || ALPHA_MIKASA && ALPHA_PRIMO || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR
+ depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR
  default y
 
 config ALPHA_EV56
- bool "EV56 CPU (speed >= 366MHz)?" if ALPHA_ALCOR
- default y if ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA
-
-config ALPHA_EV56
- prompt "EV56 CPU (speed >= 333MHz)?"
- depends on ALPHA_NORITAKE || ALPHA_PRIMO
-
-config ALPHA_EV56
- prompt "EV56 CPU (speed >= 400MHz)?"
- depends on ALPHA_RAWHIDE
-
-config ALPHA_PRIMO
- bool "EV5 CPU daughtercard (model 5/xxx)?"
- depends on ALPHA_NORITAKE || ALPHA_MIKASA
- help
- Say Y if you have an AS 1000 5/xxx or an AS 1000A 5/xxx.
-
-config ALPHA_GAMMA
- bool "EV5 CPU(s) (model 5/xxx)?" if ALPHA_SABLE
- depends on ALPHA_SABLE || ALPHA_LYNX
- default ALPHA_LYNX
- help
- Say Y if you have an AS 2000 5/xxx or an AS 2100 5/xxx.
+ bool
+ default y if ALPHA_ALCOR || ALPHA_RX164 || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_RAWHIDE || ALPHA_SABLE
 
 config ALPHA_T2
  bool
- depends on ALPHA_SABLE || ALPHA_LYNX
+ depends on ALPHA_SABLE
  default y
 
 config ALPHA_PYXIS
@@ -443,15 +295,6 @@ config GENERIC_HWEIGHT
  bool
  default y if !ALPHA_EV67
 
-config ALPHA_AVANTI
- bool
- depends on ALPHA_XL || ALPHA_AVANTI_CH
- default y
- help
- Avanti AS 200, AS 205, AS 250, AS 255, AS 300, and AS 400-based
- Alphas. Info at
- <http:https://www.unix-ag.org/Linux-Alpha/Architectures/Avanti.html>.
-
 config ALPHA_BROKEN_IRQ_MASK
  bool
  depends on ALPHA_GENERIC || ALPHA_PC164
@@ -481,9 +324,9 @@ config ALPHA_QEMU
 
 
 config ALPHA_SRM
- bool "Use SRM as bootloader" if ALPHA_CABRIOLET || ALPHA_AVANTI_CH || ALPHA_EB64P || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_EB164 || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS || ALPHA_NONAME
+ bool "Use SRM as bootloader" if ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS
  depends on TTY
- default y if ALPHA_JENSEN || ALPHA_MIKASA || ALPHA_SABLE || ALPHA_LYNX || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
+ default y if ALPHA_MIKASA || ALPHA_SABLE || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
  help
  There are two different types of booting firmware on Alphas: SRM,
  which is command line driven, and ARC, which uses menus and arrow
@@ -509,7 +352,7 @@ config ARCH_MAY_HAVE_PC_FDC
 
 config SMP
  bool "Symmetric multi-processing support"
- depends on ALPHA_SABLE || ALPHA_LYNX || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
+ depends on ALPHA_SABLE || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
  help
  This enables support for systems with more than one CPU. If you have
  a system with only one CPU, say N. If you have a system with more
@@ -545,7 +388,7 @@ config ARCH_SPARSEMEM_ENABLE
 config ALPHA_WTINT
  bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
  default y if ALPHA_QEMU
- default n if ALPHA_EV5 || ALPHA_EV56 || (ALPHA_EV4 && !ALPHA_LCA)
+ default n if ALPHA_EV56
  default n if !ALPHA_SRM && !ALPHA_GENERIC
  default y if SMP
  help

arch/alpha/Makefile

@@ -15,18 +15,14 @@ CHECKFLAGS += -D__alpha__
 cflags-y := -pipe -mno-fp-regs -ffixed-8
 cflags-y += $(call cc-option, -fno-jump-tables)
 
-cpuflags-$(CONFIG_ALPHA_EV4) := -mcpu=ev4
-cpuflags-$(CONFIG_ALPHA_EV5) := -mcpu=ev5
 cpuflags-$(CONFIG_ALPHA_EV56) := -mcpu=ev56
 cpuflags-$(CONFIG_ALPHA_POLARIS) := -mcpu=pca56
 cpuflags-$(CONFIG_ALPHA_SX164) := -mcpu=pca56
 cpuflags-$(CONFIG_ALPHA_EV6) := -mcpu=ev6
 cpuflags-$(CONFIG_ALPHA_EV67) := -mcpu=ev67
 # If GENERIC, make sure to turn off any instruction set extensions that
-# the host compiler might have on by default. Given that EV4 and EV5
-# have the same instruction set, prefer EV5 because an EV5 schedule is
-# more likely to keep an EV4 processor busy than vice-versa.
-cpuflags-$(CONFIG_ALPHA_GENERIC) := -mcpu=ev5
+# the host compiler might have on by default.
+cpuflags-$(CONFIG_ALPHA_GENERIC) := -mcpu=ev56 -mtune=ev6
 
 cflags-y += $(cpuflags-y)