mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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de6c85bf91
DMA ops are a helper for architectures and not for drivers to override the DMA implementation. Unfortunately driver authors keep ignoring this. Make the fact more clear by renaming the symbol to ARCH_HAS_DMA_OPS and having the two drivers overriding their dma_ops depend on that. These drivers should probably be marked broken, but we can give them a bit of a grace period for that. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> # for IPU6 Acked-by: Robin Murphy <robin.murphy@arm.com>
516 lines
15 KiB
Plaintext
516 lines
15 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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config ALPHA
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bool
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default y
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select ARCH_32BIT_USTAT_F_TINODE
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select ARCH_HAS_CURRENT_STACK_POINTER
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select ARCH_HAS_DMA_OPS if PCI
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select ARCH_MIGHT_HAVE_PC_PARPORT
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select ARCH_MIGHT_HAVE_PC_SERIO
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select ARCH_NO_PREEMPT
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select ARCH_NO_SG_CHAIN
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select ARCH_USE_CMPXCHG_LOCKREF
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select FORCE_PCI
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select PCI_DOMAINS if PCI
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select PCI_SYSCALL if PCI
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select HAVE_ASM_MODVERSIONS
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select HAVE_PAGE_SIZE_8KB
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select HAVE_PCSPKR_PLATFORM
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select HAVE_PERF_EVENTS
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select NEED_DMA_MAP_STATE
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select NEED_SG_DMA_LENGTH
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select GENERIC_IRQ_PROBE
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select GENERIC_PCI_IOMAP
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select AUTO_IRQ_AFFINITY if SMP
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select GENERIC_IRQ_SHOW
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select ARCH_WANT_IPC_PARSE_VERSION
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select AUDIT_ARCH
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select GENERIC_CPU_VULNERABILITIES
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select GENERIC_SMP_IDLE_THREAD
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select HAS_IOPORT
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select HAVE_ARCH_AUDITSYSCALL
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select HAVE_MOD_ARCH_SPECIFIC
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select LOCK_MM_AND_FIND_VMA
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select MODULES_USE_ELF_RELA
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select ODD_RT_SIGACTION
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select OLD_SIGSUSPEND
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select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
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select MMU_GATHER_NO_RANGE
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select SPARSEMEM_EXTREME if SPARSEMEM
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select ZONE_DMA
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help
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The Alpha is a 64-bit general-purpose processor designed and
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marketed by the Digital Equipment Corporation of blessed memory,
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now Hewlett-Packard. The Alpha Linux project has a home page at
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<http://www.alphalinux.org/>.
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config 64BIT
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def_bool y
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config MMU
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bool
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default y
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config ARCH_HAS_ILOG2_U32
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bool
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default n
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config ARCH_HAS_ILOG2_U64
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bool
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default n
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config GENERIC_ISA_DMA
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bool
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default y
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config PGTABLE_LEVELS
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int
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default 3
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config AUDIT_ARCH
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bool
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menu "System setup"
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choice
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prompt "Alpha system type"
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default ALPHA_GENERIC
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help
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This is the system type of your hardware. A "generic" kernel will
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run on any supported Alpha system. However, if you configure a
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kernel for your specific system, it will be faster and smaller.
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To find out what type of Alpha system you have, you may want to
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check out the Linux/Alpha FAQ, accessible on the WWW from
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<http://www.alphalinux.org/>. In summary:
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Alcor/Alpha-XLT AS 600, AS 500, XL-300, XL-366
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DP264 DP264 / DS20 / ES40 / DS10 / DS10L
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LX164 AlphaPC164-LX
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Miata Personal Workstation 433/500/600 a/au
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Marvel AlphaServer ES47 / ES80 / GS1280
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Mikasa AS 1000
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Noritake AS 1000A, AS 600A, AS 800
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PC164 AlphaPC164
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Rawhide AS 1200, AS 4000, AS 4100
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Ruffian RPX164-2, AlphaPC164-UX, AlphaPC164-BX
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SX164 AlphaPC164-SX
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Sable AS 2000, AS 2100
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Shark DS 20L
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Takara Takara (OEM)
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Titan AlphaServer ES45 / DS25 / DS15
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Wildfire AlphaServer GS 40/80/160/320
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If you don't know what to do, choose "generic".
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config ALPHA_GENERIC
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bool "Generic"
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depends on TTY
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select HAVE_EISA
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help
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A generic kernel will run on all supported Alpha hardware.
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config ALPHA_ALCOR
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bool "Alcor/Alpha-XLT"
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select HAVE_EISA
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help
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For systems using the Digital ALCOR chipset: 5 chips (4, 64-bit data
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slices (Data Switch, DSW) - 208-pin PQFP and 1 control (Control, I/O
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Address, CIA) - a 383 pin plastic PGA). It provides a DRAM
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controller (256-bit memory bus) and a PCI interface. It also does
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all the work required to support an external Bcache and to maintain
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memory coherence when a PCI device DMAs into (or out of) memory.
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config ALPHA_DP264
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bool "DP264"
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help
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Various 21264 systems with the tsunami core logic chipset.
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API Networks: 264DP, UP2000(+), CS20;
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Compaq: DS10(E,L), XP900, XP1000, DS20(E), ES40.
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config ALPHA_EIGER
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bool "Eiger"
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help
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Apparently an obscure OEM single-board computer based on the
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Typhoon/Tsunami chipset family. Information on it is scanty.
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config ALPHA_LX164
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bool "LX164"
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help
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A technical overview of this board is available at
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<http://www.unix-ag.org/Linux-Alpha/Architectures/LX164.html>.
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config ALPHA_MARVEL
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bool "Marvel"
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help
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AlphaServer ES47 / ES80 / GS1280 based on EV7.
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config ALPHA_MIATA
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bool "Miata"
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select HAVE_EISA
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help
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The Digital PersonalWorkStation (PWS 433a, 433au, 500a, 500au, 600a,
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or 600au).
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config ALPHA_MIKASA
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bool "Mikasa"
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help
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AlphaServer 1000-based Alpha systems.
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config ALPHA_NAUTILUS
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bool "Nautilus"
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help
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Alpha systems based on the AMD 751 & ALI 1543C chipsets.
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config ALPHA_NORITAKE
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bool "Noritake"
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select HAVE_EISA
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help
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AlphaServer 1000A, AlphaServer 600A, and AlphaServer 800-based
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systems.
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config ALPHA_PC164
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bool "PC164"
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config ALPHA_RAWHIDE
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bool "Rawhide"
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select HAVE_EISA
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help
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AlphaServer 1200, AlphaServer 4000 and AlphaServer 4100 machines.
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See HOWTO at
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<http://www.alphalinux.org/docs/rawhide/4100_install.shtml>.
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config ALPHA_RUFFIAN
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bool "Ruffian"
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help
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Samsung APC164UX. There is a page on known problems and workarounds
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at <http://www.alphalinux.org/faq/FAQ-11.html>.
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config ALPHA_RX164
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bool "RX164"
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config ALPHA_SX164
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bool "SX164"
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config ALPHA_SABLE
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bool "Sable"
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select HAVE_EISA
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help
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Digital AlphaServer 2000 and 2100-based systems.
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config ALPHA_SHARK
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bool "Shark"
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config ALPHA_TAKARA
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bool "Takara"
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help
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Alpha 11164-based OEM single-board computer.
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config ALPHA_TITAN
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bool "Titan"
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help
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AlphaServer ES45/DS25 SMP based on EV68 and Titan chipset.
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config ALPHA_WILDFIRE
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bool "Wildfire"
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help
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AlphaServer GS 40/80/160/320 SMP based on the EV67 core.
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endchoice
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# clear all implied options (don't want default values for those):
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# Most of these machines have ISA slots; not exactly sure which don't,
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# and this doesn't activate hordes of code, so do it always.
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config ISA
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bool
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default y
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help
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Find out whether you have ISA slots on your motherboard. ISA is the
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name of a bus system, i.e. the way the CPU talks to the other stuff
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inside your box. Other bus systems are PCI, EISA, MicroChannel
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(MCA) or VESA. ISA is an older system, now being displaced by PCI;
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newer boards don't support it. If you have ISA, say Y, otherwise N.
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config ISA_DMA_API
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bool
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default y
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config ALPHA_CIA
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bool
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depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN || ALPHA_NORITAKE || ALPHA_MIKASA || ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR
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default y
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config ALPHA_EV56
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bool
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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
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config ALPHA_T2
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bool
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depends on ALPHA_SABLE
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default y
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config ALPHA_PYXIS
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bool
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depends on ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_RUFFIAN
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default y
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config ALPHA_EV6
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bool
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depends on ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER || ALPHA_MARVEL
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default y
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config ALPHA_TSUNAMI
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bool
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depends on ALPHA_SHARK || ALPHA_DP264 || ALPHA_EIGER
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default y
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config ALPHA_EV67
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bool "EV67 (or later) CPU (speed > 600MHz)?" if ALPHA_DP264 || ALPHA_EIGER
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default y if ALPHA_NAUTILUS || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
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help
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Is this a machine based on the EV67 core? If in doubt, select N here
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and the machine will be treated as an EV6.
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config ALPHA_MCPCIA
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bool
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depends on ALPHA_RAWHIDE
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default y
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config ALPHA_POLARIS
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bool
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depends on ALPHA_RX164
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default y
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config ALPHA_IRONGATE
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bool
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depends on ALPHA_NAUTILUS
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default y
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config GENERIC_HWEIGHT
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bool
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default y if !ALPHA_EV67
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config ALPHA_BROKEN_IRQ_MASK
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bool
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depends on ALPHA_GENERIC || ALPHA_PC164
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default y
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config VGA_HOSE
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bool
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depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI)
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default y
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help
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Support VGA on an arbitrary hose; needed for several platforms
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which always have multiple hoses, and whose consoles support it.
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config ALPHA_QEMU
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bool "Run under QEMU emulation"
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depends on !ALPHA_GENERIC
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help
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Assume the presence of special features supported by QEMU PALcode
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that reduce the overhead of system emulation.
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Generic kernels will auto-detect QEMU. But when building a
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system-specific kernel, the assumption is that we want to
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eliminate as many runtime tests as possible.
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If unsure, say N.
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config ALPHA_SRM
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bool "Use SRM as bootloader" if ALPHA_PC164 || ALPHA_TAKARA || ALPHA_ALCOR || ALPHA_MIATA || ALPHA_LX164 || ALPHA_SX164 || ALPHA_NAUTILUS
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depends on TTY
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default y if ALPHA_MIKASA || ALPHA_SABLE || ALPHA_NORITAKE || ALPHA_DP264 || ALPHA_RAWHIDE || ALPHA_EIGER || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_SHARK || ALPHA_MARVEL
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help
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There are two different types of booting firmware on Alphas: SRM,
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which is command line driven, and ARC, which uses menus and arrow
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keys. Details about the Linux/Alpha booting process are contained in
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the Linux/Alpha FAQ, accessible on the WWW from
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<http://www.alphalinux.org/>.
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The usual way to load Linux on an Alpha machine is to use MILO
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(a bootloader that lets you pass command line parameters to the
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kernel just like lilo does for the x86 architecture) which can be
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loaded either from ARC or can be installed directly as a permanent
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firmware replacement from floppy (which requires changing a certain
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jumper on the motherboard). If you want to do either of these, say N
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here. If MILO doesn't work on your system (true for Jensen
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motherboards), you can bypass it altogether and boot Linux directly
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from an SRM console; say Y here in order to do that. Note that you
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won't be able to boot from an IDE disk using SRM.
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If unsure, say N.
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config ARCH_MAY_HAVE_PC_FDC
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def_bool y
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config SMP
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bool "Symmetric multi-processing support"
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depends on ALPHA_SABLE || ALPHA_RAWHIDE || ALPHA_DP264 || ALPHA_WILDFIRE || ALPHA_TITAN || ALPHA_GENERIC || ALPHA_SHARK || ALPHA_MARVEL
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help
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more
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than one CPU, say Y.
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If you say N here, the kernel will run on uni- and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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uniprocessor machines. On a uniprocessor machine, the kernel
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will run faster if you say N here.
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See also the SMP-HOWTO available at
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<https://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config NR_CPUS
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int "Maximum number of CPUs (2-32)"
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range 2 32
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depends on SMP
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default "32" if ALPHA_GENERIC || ALPHA_MARVEL
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default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
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help
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MARVEL support can handle a maximum of 32 CPUs, all the others
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with working support have a maximum of 4 CPUs.
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config ARCH_SPARSEMEM_ENABLE
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bool "Sparse Memory Support"
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help
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Say Y to support efficient handling of discontiguous physical memory,
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for systems that have huge holes in the physical address space.
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config ALPHA_WTINT
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bool "Use WTINT" if ALPHA_SRM || ALPHA_GENERIC
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default y if ALPHA_QEMU
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default n if ALPHA_EV56
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default n if !ALPHA_SRM && !ALPHA_GENERIC
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default y if SMP
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help
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The Wait for Interrupt (WTINT) PALcall attempts to place the CPU
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to sleep until the next interrupt. This may reduce the power
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consumed, and the heat produced by the computer. However, it has
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the side effect of making the cycle counter unreliable as a timing
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device across the sleep.
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For emulation under QEMU, definitely say Y here, as we have other
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mechanisms for measuring time than the cycle counter.
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For EV4 (but not LCA), EV5 and EV56 systems, or for systems running
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MILO, sleep mode is not supported so you might as well say N here.
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For SMP systems we cannot use the cycle counter for timing anyway,
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so you might as well say Y here.
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If unsure, say N.
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# LARGE_VMALLOC is racy, if you *really* need it then fix it first
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config ALPHA_LARGE_VMALLOC
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bool
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help
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Process creation and other aspects of virtual memory management can
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be streamlined if we restrict the kernel to one PGD for all vmalloc
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allocations. This equates to about 8GB.
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Under normal circumstances, this is so far and above what is needed
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as to be laughable. However, there are certain applications (such
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as benchmark-grade in-kernel web serving) that can make use of as
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much vmalloc space as is available.
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Say N unless you know you need gobs and gobs of vmalloc space.
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config VERBOSE_MCHECK
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bool "Verbose Machine Checks"
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config VERBOSE_MCHECK_ON
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int "Verbose Printing Mode (0=off, 1=on, 2=all)"
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depends on VERBOSE_MCHECK
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default 1
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help
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This option allows the default printing mode to be set, and then
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possibly overridden by a boot command argument.
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For example, if one wanted the option of printing verbose
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machine checks, but wanted the default to be as if verbose
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machine check printing was turned off, then one would choose
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the printing mode to be 0. Then, upon reboot, one could add
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the boot command line "verbose_mcheck=1" to get the normal
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verbose machine check printing, or "verbose_mcheck=2" to get
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the maximum information available.
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Take the default (1) unless you want more control or more info.
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choice
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prompt "Timer interrupt frequency (HZ)?"
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default HZ_128 if ALPHA_QEMU
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default HZ_1200 if ALPHA_RAWHIDE
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default HZ_1024
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help
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The frequency at which timer interrupts occur. A high frequency
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minimizes latency, whereas a low frequency minimizes overhead of
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process accounting. The later effect is especially significant
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when being run under QEMU.
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Note that some Alpha hardware cannot change the interrupt frequency
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of the timer. If unsure, say 1024 (or 1200 for Rawhide).
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config HZ_32
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bool "32 Hz"
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config HZ_64
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bool "64 Hz"
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config HZ_128
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bool "128 Hz"
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config HZ_256
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bool "256 Hz"
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config HZ_1024
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bool "1024 Hz"
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config HZ_1200
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bool "1200 Hz"
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endchoice
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config HZ
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int
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default 32 if HZ_32
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default 64 if HZ_64
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default 128 if HZ_128
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default 256 if HZ_256
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default 1200 if HZ_1200
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default 1024
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config SRM_ENV
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tristate "SRM environment through procfs"
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depends on PROC_FS
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help
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If you enable this option, a subdirectory inside /proc called
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/proc/srm_environment will give you access to the all important
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SRM environment variables (those which have a name) and also
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to all others (by their internal number).
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SRM is something like a BIOS for Alpha machines. There are some
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other such BIOSes, like AlphaBIOS, which this driver cannot
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support (hey, that's not SRM!).
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Despite the fact that this driver doesn't work on all Alphas (but
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only on those which have SRM as their firmware), it's save to
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build it even if your particular machine doesn't know about SRM
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(or if you intend to compile a generic kernel). It will simply
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not create those subdirectory in /proc (and give you some warning,
|
|
of course).
|
|
|
|
This driver is also available as a module and will be called
|
|
srm_env then.
|
|
|
|
endmenu
|
|
|
|
# DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
|
|
# but we also need it if VGA_HOSE is set
|
|
config DUMMY_CONSOLE
|
|
bool
|
|
depends on VGA_HOSE
|
|
default y
|