Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  arch/tile: check kmalloc() result
  arch/tile: catch up on various minor cleanups.
  arch/tile: avoid erroneous error return for PTRACE_POKEUSR.
  tile: set ARCH_KMALLOC_MINALIGN
  tile: remove homegrown L1_CACHE_ALIGN macro
  arch/tile: Miscellaneous cleanup changes.
  arch/tile: Split the icache flush code off to a generic <arch> header.
  arch/tile: Fix bug in support for atomic64_xx() ops.
  arch/tile: Shrink the tile-opcode files considerably.
  arch/tile: Add driver to enable access to the user dynamic network.
  arch/tile: Enable more sophisticated IRQ model for 32-bit chips.
  Move list types from <linux/list.h> to <linux/types.h>.
  Add wait4() back to the set of <asm-generic/unistd.h> syscalls.
  Revert adding some arch-specific signal syscalls to <linux/syscalls.h>.
  arch/tile: Do not use GFP_KERNEL for dma_alloc_coherent(). Feedback from fujita.tomonori@lab.ntt.co.jp.
  arch/tile: core support for Tilera 32-bit chips.
  Fix up the "generic" unistd.h ABI to be more useful.

MAINTAINERS

@@ -5626,6 +5626,12 @@ F:	include/linux/tipc*.h
 F:	include/net/tipc/
 F:	net/tipc/
 
+TILE ARCHITECTURE
+M:	Chris Metcalf <cmetcalf@tilera.com>
+W:	http://www.tilera.com/scm/
+S:	Supported
+F:	arch/tile/
+
 TLAN NETWORK DRIVER
 M:	Samuel Chessman <chessman@tux.org>
 L:	tlan-devel@lists.sourceforge.net (subscribers-only)

arch/tile/Kbuild

+
+obj-y += kernel/
+obj-y += mm/

arch/tile/Kconfig

+# For a description of the syntax of this configuration file,
+# see Documentation/kbuild/config-language.txt.
+
+config MMU
+	def_bool y
+
+config GENERIC_CSUM
+	def_bool y
+
+config GENERIC_HARDIRQS
+	def_bool y
+
+config GENERIC_HARDIRQS_NO__DO_IRQ
+	def_bool y
+
+config GENERIC_IRQ_PROBE
+	def_bool y
+
+config GENERIC_PENDING_IRQ
+	def_bool y
+	depends on GENERIC_HARDIRQS && SMP
+
+config SEMAPHORE_SLEEPERS
+	def_bool y
+
+config HAVE_ARCH_ALLOC_REMAP
+	def_bool y
+
+config HAVE_SETUP_PER_CPU_AREA
+	def_bool y
+
+config NEED_PER_CPU_PAGE_FIRST_CHUNK
+        def_bool y
+
+config SYS_SUPPORTS_HUGETLBFS
+	def_bool y
+
+config GENERIC_TIME
+	def_bool y
+
+config GENERIC_CLOCKEVENTS
+	def_bool y
+
+# FIXME: tilegx can implement a more efficent rwsem.
+config RWSEM_GENERIC_SPINLOCK
+	def_bool y
+
+# We have a very flat architecture from a migration point of view,
+# so save boot time by presetting this (particularly useful on tile-sim).
+config DEFAULT_MIGRATION_COST
+	int
+	default "10000000"
+
+# We only support gcc 4.4 and above, so this should work.
+config ARCH_SUPPORTS_OPTIMIZED_INLINING
+	def_bool y
+
+config ARCH_PHYS_ADDR_T_64BIT
+	def_bool y
+
+config LOCKDEP_SUPPORT
+	def_bool y
+
+config STACKTRACE_SUPPORT
+	def_bool y
+	select STACKTRACE
+
+# We use discontigmem for now; at some point we may want to switch
+# to sparsemem (Tilera bug 7996).
+config ARCH_DISCONTIGMEM_ENABLE
+	def_bool y
+
+config ARCH_DISCONTIGMEM_DEFAULT
+	def_bool y
+
+config TRACE_IRQFLAGS_SUPPORT
+	def_bool y
+
+config STRICT_DEVMEM
+	def_bool y
+
+# SMP is required for Tilera Linux.
+config SMP
+	def_bool y
+
+# Allow checking for compile-time determined overflow errors in
+# copy_from_user().  There are still unprovable places in the
+# generic code as of 2.6.34, so this option is not really compatible
+# with -Werror, which is more useful in general.
+config DEBUG_COPY_FROM_USER
+	def_bool n
+
+config HVC_TILE
+	select HVC_DRIVER
+	def_bool y
+
+config TILE
+	def_bool y
+	select GENERIC_FIND_FIRST_BIT
+	select GENERIC_FIND_NEXT_BIT
+	select USE_GENERIC_SMP_HELPERS
+	select CC_OPTIMIZE_FOR_SIZE
+
+# FIXME: investigate whether we need/want these options.
+#	select HAVE_IOREMAP_PROT
+#       select HAVE_OPTPROBES
+#       select HAVE_REGS_AND_STACK_ACCESS_API
+#       select HAVE_HW_BREAKPOINT
+#       select PERF_EVENTS
+#       select HAVE_USER_RETURN_NOTIFIER
+#       config NO_BOOTMEM
+#       config ARCH_SUPPORTS_DEBUG_PAGEALLOC
+#       config HUGETLB_PAGE_SIZE_VARIABLE
+
+
+mainmenu "Linux/TILE Kernel Configuration"
+
+# Please note: TILE-Gx support is not yet finalized; this is
+# the preliminary support.  TILE-Gx drivers are only provided
+# with the alpha or beta test versions for Tilera customers.
+config TILEGX
+	depends on EXPERIMENTAL
+	bool "Building with TILE-Gx (64-bit) compiler and toolchain"
+
+config 64BIT
+	depends on TILEGX
+	def_bool y
+
+config ARCH_DEFCONFIG
+	string
+	default "arch/tile/configs/tile_defconfig" if !TILEGX
+	default "arch/tile/configs/tilegx_defconfig" if TILEGX
+
+source "init/Kconfig"
+
+menu "Tilera-specific configuration"
+
+config NR_CPUS
+	int "Maximum number of tiles (2-255)"
+	range 2 255
+	depends on SMP
+	default "64"
+	---help---
+	  Building with 64 is the recommended value, but a slightly
+	  smaller kernel memory footprint results from using a smaller
+	  value on chips with fewer tiles.
+
+source "kernel/time/Kconfig"
+
+source "kernel/Kconfig.hz"
+
+config KEXEC
+	bool "kexec system call"
+	---help---
+	  kexec is a system call that implements the ability to shutdown your
+	  current kernel, and to start another kernel.  It is like a reboot
+	  but it is independent of the system firmware.   It is used
+	  to implement the "mboot" Tilera booter.
+
+	  The name comes from the similarity to the exec system call.
+
+config COMPAT
+	bool "Support 32-bit TILE-Gx binaries in addition to 64-bit"
+	depends on TILEGX
+	select COMPAT_BINFMT_ELF
+	default y
+	---help---
+	  If enabled, the kernel will support running TILE-Gx binaries
+	  that were built with the -m32 option.
+
+config SYSVIPC_COMPAT
+	def_bool y
+	depends on COMPAT && SYSVIPC
+
+# We do not currently support disabling HIGHMEM on tile64 and tilepro.
+config HIGHMEM
+	bool # "Support for more than 512 MB of RAM"
+	default !TILEGX
+	---help---
+	  Linux can use the full amount of RAM in the system by
+	  default.  However, the address space of TILE processors is
+	  only 4 Gigabytes large. That means that, if you have a large
+	  amount of physical memory, not all of it can be "permanently
+	  mapped" by the kernel. The physical memory that's not
+	  permanently mapped is called "high memory".
+
+	  If you are compiling a kernel which will never run on a
+	  machine with more than 512 MB total physical RAM, answer
+	  "false" here. This will result in the kernel mapping all of
+	  physical memory into the top 1 GB of virtual memory space.
+
+	  If unsure, say "true".
+
+# We do not currently support disabling NUMA.
+config NUMA
+	bool # "NUMA Memory Allocation and Scheduler Support"
+	depends on SMP && DISCONTIGMEM
+	default y
+	---help---
+	  NUMA memory allocation is required for TILE processors
+	  unless booting with memory striping enabled in the
+	  hypervisor, or with only a single memory controller.
+	  It is recommended that this option always be enabled.
+
+config NODES_SHIFT
+	int "Log base 2 of the max number of memory controllers"
+	default 2
+	depends on NEED_MULTIPLE_NODES
+	---help---
+	  By default, 2, i.e. 2^2 == 4 DDR2 controllers.
+	  In a system with more controllers, this value should be raised.
+
+# Need 16MB areas to enable hugetlb
+# See build-time check in arch/tile/mm/init.c.
+config FORCE_MAX_ZONEORDER
+	int
+	default 9
+
+choice
+	depends on !TILEGX
+	prompt "Memory split" if EMBEDDED
+	default VMSPLIT_3G
+	---help---
+	  Select the desired split between kernel and user memory.
+
+	  If the address range available to the kernel is less than the
+	  physical memory installed, the remaining memory will be available
+	  as "high memory". Accessing high memory is a little more costly
+	  than low memory, as it needs to be mapped into the kernel first.
+	  Note that increasing the kernel address space limits the range
+	  available to user programs, making the address space there
+	  tighter.  Selecting anything other than the default 3G/1G split
+	  will also likely make your kernel incompatible with binary-only
+	  kernel modules.
+
+	  If you are not absolutely sure what you are doing, leave this
+	  option alone!
+
+	config VMSPLIT_375G
+		bool "3.75G/0.25G user/kernel split (no kernel networking)"
+	config VMSPLIT_35G
+		bool "3.5G/0.5G user/kernel split"
+	config VMSPLIT_3G
+		bool "3G/1G user/kernel split"
+	config VMSPLIT_3G_OPT
+		bool "3G/1G user/kernel split (for full 1G low memory)"
+	config VMSPLIT_2G
+		bool "2G/2G user/kernel split"
+	config VMSPLIT_1G
+		bool "1G/3G user/kernel split"
+endchoice
+
+config PAGE_OFFSET
+	hex
+	default 0xF0000000 if VMSPLIT_375G
+	default 0xE0000000 if VMSPLIT_35G
+	default 0xB0000000 if VMSPLIT_3G_OPT
+	default 0x80000000 if VMSPLIT_2G
+	default 0x40000000 if VMSPLIT_1G
+	default 0xC0000000
+
+source "mm/Kconfig"
+
+config CMDLINE_BOOL
+	bool "Built-in kernel command line"
+	default n
+	---help---
+	  Allow for specifying boot arguments to the kernel at
+	  build time.  On some systems (e.g. embedded ones), it is
+	  necessary or convenient to provide some or all of the
+	  kernel boot arguments with the kernel itself (that is,
+	  to not rely on the boot loader to provide them.)
+
+	  To compile command line arguments into the kernel,
+	  set this option to 'Y', then fill in the
+	  the boot arguments in CONFIG_CMDLINE.
+
+	  Systems with fully functional boot loaders (e.g. mboot, or
+	  if booting over PCI) should leave this option set to 'N'.
+
+config CMDLINE
+	string "Built-in kernel command string"
+	depends on CMDLINE_BOOL
+	default ""
+	---help---
+	  Enter arguments here that should be compiled into the kernel
+	  image and used at boot time.  If the boot loader provides a
+	  command line at boot time, it is appended to this string to
+	  form the full kernel command line, when the system boots.
+
+	  However, you can use the CONFIG_CMDLINE_OVERRIDE option to
+	  change this behavior.
+
+	  In most cases, the command line (whether built-in or provided
+	  by the boot loader) should specify the device for the root
+	  file system.
+
+config CMDLINE_OVERRIDE
+	bool "Built-in command line overrides boot loader arguments"
+	default n
+	depends on CMDLINE_BOOL
+	---help---
+	  Set this option to 'Y' to have the kernel ignore the boot loader
+	  command line, and use ONLY the built-in command line.
+
+	  This is used to work around broken boot loaders.  This should
+	  be set to 'N' under normal conditions.
+
+config VMALLOC_RESERVE
+	hex
+	default 0x1000000
+
+config HARDWALL
+	bool "Hardwall support to allow access to user dynamic network"
+	default y
+
+endmenu  # Tilera-specific configuration
+
+menu "Bus options"
+
+config NO_IOMEM
+	def_bool !PCI
+
+config NO_IOPORT
+	def_bool !PCI
+
+source "drivers/pci/Kconfig"
+
+source "drivers/pci/hotplug/Kconfig"
+
+endmenu
+
+menu "Executable file formats"
+
+# only elf supported
+config KCORE_ELF
+	def_bool y
+	depends on PROC_FS
+
+source "fs/Kconfig.binfmt"
+
+endmenu
+
+source "net/Kconfig"
+
+source "drivers/Kconfig"
+
+source "fs/Kconfig"
+
+source "arch/tile/Kconfig.debug"
+
+source "security/Kconfig"
+
+source "crypto/Kconfig"
+
+source "lib/Kconfig"

arch/tile/Kconfig.debug

+menu "Kernel hacking"
+
+source "lib/Kconfig.debug"
+
+config EARLY_PRINTK
+	bool "Early printk" if EMBEDDED && DEBUG_KERNEL
+	default y
+	help
+	  Write kernel log output directly via the hypervisor console.
+
+	  This is useful for kernel debugging when your machine crashes very
+	  early before the console code is initialized. For normal operation
+	  it is not recommended because it looks ugly and doesn't cooperate
+	  with klogd/syslogd. You should normally N here,
+	  unless you want to debug such a crash.
+
+config DEBUG_STACKOVERFLOW
+	bool "Check for stack overflows"
+	depends on DEBUG_KERNEL
+	help
+	  This option will cause messages to be printed if free stack space
+	  drops below a certain limit.
+
+config DEBUG_STACK_USAGE
+	bool "Stack utilization instrumentation"
+	depends on DEBUG_KERNEL
+	help
+	  Enables the display of the minimum amount of free stack which each
+	  task has ever had available in the sysrq-T and sysrq-P debug output.
+
+	  This option will slow down process creation somewhat.
+
+config DEBUG_EXTRA_FLAGS
+	string "Additional compiler arguments when building with '-g'"
+	depends on DEBUG_INFO
+	default ""
+	help
+	  Debug info can be large, and flags like
+	  `-femit-struct-debug-baseonly' can reduce the kernel file
+	  size and build time noticeably.  Such flags are often
+	  helpful if the main use of debug info is line number info.
+
+endmenu

arch/tile/Makefile

+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies. Remember to do have actions
+# for "archclean" and "archdep" for cleaning up and making dependencies for
+# this architecture
+
+ifeq ($(CROSS_COMPILE),)
+# If building with TILERA_ROOT set (i.e. using the Tilera Multicore
+# Development Environment) we can set CROSS_COMPILE based on that.
+ifdef TILERA_ROOT
+CROSS_COMPILE	= $(TILERA_ROOT)/bin/tile-
+endif
+endif
+
+# If we're not cross-compiling, make sure we're on the right architecture.
+ifeq ($(CROSS_COMPILE),)
+HOST_ARCH = $(shell uname -m)
+ifneq ($(HOST_ARCH),$(ARCH))
+$(error Set TILERA_ROOT or CROSS_COMPILE when building $(ARCH) on $(HOST_ARCH))
+endif
+endif
+
+
+KBUILD_CFLAGS   += $(CONFIG_DEBUG_EXTRA_FLAGS)
+
+LIBGCC_PATH     := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
+
+# Provide the path to use for "make defconfig".
+KBUILD_DEFCONFIG := $(ARCH)_defconfig
+
+# Used as a file extension when useful, e.g. head_$(BITS).o
+# Not needed for (e.g.) "$(CC) -m32" since the compiler automatically
+# uses the right default anyway.
+export BITS
+ifeq ($(CONFIG_TILEGX),y)
+BITS := 64
+else
+BITS := 32
+endif
+
+head-y		:= arch/tile/kernel/head_$(BITS).o
+
+libs-y		+= arch/tile/lib/
+libs-y		+= $(LIBGCC_PATH)
+
+
+# See arch/tile/Kbuild for content of core part of the kernel
+core-y		+= arch/tile/

arch/tile/include/arch/abi.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/**
+ * @file
+ *
+ * ABI-related register definitions helpful when writing assembly code.
+ */
+
+#ifndef __ARCH_ABI_H__
+#define __ARCH_ABI_H__
+
+#include <arch/chip.h>
+
+/* Registers 0 - 55 are "normal", but some perform special roles. */
+
+#define TREG_FP       52   /**< Frame pointer. */
+#define TREG_TP       53   /**< Thread pointer. */
+#define TREG_SP       54   /**< Stack pointer. */
+#define TREG_LR       55   /**< Link to calling function PC. */
+
+/** Index of last normal general-purpose register. */
+#define TREG_LAST_GPR 55
+
+/* Registers 56 - 62 are "special" network registers. */
+
+#define TREG_SN       56   /**< Static network access. */
+#define TREG_IDN0     57   /**< IDN demux 0 access. */
+#define TREG_IDN1     58   /**< IDN demux 1 access. */
+#define TREG_UDN0     59   /**< UDN demux 0 access. */
+#define TREG_UDN1     60   /**< UDN demux 1 access. */
+#define TREG_UDN2     61   /**< UDN demux 2 access. */
+#define TREG_UDN3     62   /**< UDN demux 3 access. */
+
+/* Register 63 is the "special" zero register. */
+
+#define TREG_ZERO     63   /**< "Zero" register; always reads as "0". */
+
+
+/** By convention, this register is used to hold the syscall number. */
+#define TREG_SYSCALL_NR      10
+
+/** Name of register that holds the syscall number, for use in assembly. */
+#define TREG_SYSCALL_NR_NAME r10
+
+
+/**
+ * The ABI requires callers to allocate a caller state save area of
+ * this many bytes at the bottom of each stack frame.
+ */
+#ifdef __tile__
+#define C_ABI_SAVE_AREA_SIZE (2 * __SIZEOF_POINTER__)
+#endif
+
+/**
+ * The operand to an 'info' opcode directing the backtracer to not
+ * try to find the calling frame.
+ */
+#define INFO_OP_CANNOT_BACKTRACE 2
+
+#ifndef __ASSEMBLER__
+#if CHIP_WORD_SIZE() > 32
+
+/** Unsigned type that can hold a register. */
+typedef unsigned long long uint_reg_t;
+
+/** Signed type that can hold a register. */
+typedef long long int_reg_t;
+
+/** String prefix to use for printf(). */
+#define INT_REG_FMT "ll"
+
+#elif !defined(__LP64__)   /* avoid confusion with LP64 cross-build tools */
+
+/** Unsigned type that can hold a register. */
+typedef unsigned long uint_reg_t;
+
+/** Signed type that can hold a register. */
+typedef long int_reg_t;
+
+/** String prefix to use for printf(). */
+#define INT_REG_FMT "l"
+
+#endif
+#endif /* __ASSEMBLER__ */
+
+#endif /* !__ARCH_ABI_H__ */

arch/tile/include/arch/chip.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#if __tile_chip__ == 0
+#include <arch/chip_tile64.h>
+#elif __tile_chip__ == 1
+#include <arch/chip_tilepro.h>
+#elif defined(__tilegx__)
+#include <arch/chip_tilegx.h>
+#else
+#error Unexpected Tilera chip type
+#endif

arch/tile/include/arch/chip_tile64.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/*
+ * @file
+ * Global header file.
+ * This header file specifies defines for TILE64.
+ */
+
+#ifndef __ARCH_CHIP_H__
+#define __ARCH_CHIP_H__
+
+/** Specify chip version.
+ * When possible, prefer the CHIP_xxx symbols below for future-proofing.
+ * This is intended for cross-compiling; native compilation should
+ * use the predefined __tile_chip__ symbol.
+ */
+#define TILE_CHIP 0
+
+/** Specify chip revision.
+ * This provides for the case of a respin of a particular chip type;
+ * the normal value for this symbol is "0".
+ * This is intended for cross-compiling; native compilation should
+ * use the predefined __tile_chip_rev__ symbol.
+ */
+#define TILE_CHIP_REV 0
+
+/** The name of this architecture. */
+#define CHIP_ARCH_NAME "tile64"
+
+/** The ELF e_machine type for binaries for this chip. */
+#define CHIP_ELF_TYPE() EM_TILE64
+
+/** The alternate ELF e_machine type for binaries for this chip. */
+#define CHIP_COMPAT_ELF_TYPE() 0x2506
+
+/** What is the native word size of the machine? */
+#define CHIP_WORD_SIZE() 32
+
+/** How many bits of a virtual address are used. Extra bits must be
+ * the sign extension of the low bits.
+ */
+#define CHIP_VA_WIDTH() 32
+
+/** How many bits are in a physical address? */
+#define CHIP_PA_WIDTH() 36
+
+/** Size of the L2 cache, in bytes. */
+#define CHIP_L2_CACHE_SIZE() 65536
+
+/** Log size of an L2 cache line in bytes. */
+#define CHIP_L2_LOG_LINE_SIZE() 6
+
+/** Size of an L2 cache line, in bytes. */
+#define CHIP_L2_LINE_SIZE() (1 << CHIP_L2_LOG_LINE_SIZE())
+
+/** Associativity of the L2 cache. */
+#define CHIP_L2_ASSOC() 2
+
+/** Size of the L1 data cache, in bytes. */
+#define CHIP_L1D_CACHE_SIZE() 8192
+
+/** Log size of an L1 data cache line in bytes. */
+#define CHIP_L1D_LOG_LINE_SIZE() 4
+
+/** Size of an L1 data cache line, in bytes. */
+#define CHIP_L1D_LINE_SIZE() (1 << CHIP_L1D_LOG_LINE_SIZE())
+
+/** Associativity of the L1 data cache. */
+#define CHIP_L1D_ASSOC() 2
+
+/** Size of the L1 instruction cache, in bytes. */
+#define CHIP_L1I_CACHE_SIZE() 8192
+
+/** Log size of an L1 instruction cache line in bytes. */
+#define CHIP_L1I_LOG_LINE_SIZE() 6
+
+/** Size of an L1 instruction cache line, in bytes. */
+#define CHIP_L1I_LINE_SIZE() (1 << CHIP_L1I_LOG_LINE_SIZE())
+
+/** Associativity of the L1 instruction cache. */
+#define CHIP_L1I_ASSOC() 1
+
+/** Stride with which flush instructions must be issued. */
+#define CHIP_FLUSH_STRIDE() CHIP_L2_LINE_SIZE()
+
+/** Stride with which inv instructions must be issued. */
+#define CHIP_INV_STRIDE() CHIP_L1D_LINE_SIZE()
+
+/** Stride with which finv instructions must be issued. */
+#define CHIP_FINV_STRIDE() CHIP_L1D_LINE_SIZE()
+
+/** Can the local cache coherently cache data that is homed elsewhere? */
+#define CHIP_HAS_COHERENT_LOCAL_CACHE() 0
+
+/** How many simultaneous outstanding victims can the L2 cache have? */
+#define CHIP_MAX_OUTSTANDING_VICTIMS() 2
+
+/** Does the TLB support the NC and NOALLOC bits? */
+#define CHIP_HAS_NC_AND_NOALLOC_BITS() 0
+
+/** Does the chip support hash-for-home caching? */
+#define CHIP_HAS_CBOX_HOME_MAP() 0
+
+/** Number of entries in the chip's home map tables. */
+/* #define CHIP_CBOX_HOME_MAP_SIZE() -- does not apply to chip 0 */
+
+/** Do uncacheable requests miss in the cache regardless of whether
+ * there is matching data? */
+#define CHIP_HAS_ENFORCED_UNCACHEABLE_REQUESTS() 0
+
+/** Does the mf instruction wait for victims? */
+#define CHIP_HAS_MF_WAITS_FOR_VICTIMS() 1
+
+/** Does the chip have an "inv" instruction that doesn't also flush? */
+#define CHIP_HAS_INV() 0
+
+/** Does the chip have a "wh64" instruction? */
+#define CHIP_HAS_WH64() 0
+
+/** Does this chip have a 'dword_align' instruction? */
+#define CHIP_HAS_DWORD_ALIGN() 0
+
+/** Number of performance counters. */
+#define CHIP_PERFORMANCE_COUNTERS() 2
+
+/** Does this chip have auxiliary performance counters? */
+#define CHIP_HAS_AUX_PERF_COUNTERS() 0
+
+/** Is the CBOX_MSR1 SPR supported? */
+#define CHIP_HAS_CBOX_MSR1() 0
+
+/** Is the TILE_RTF_HWM SPR supported? */
+#define CHIP_HAS_TILE_RTF_HWM() 0
+
+/** Is the TILE_WRITE_PENDING SPR supported? */
+#define CHIP_HAS_TILE_WRITE_PENDING() 0
+
+/** Is the PROC_STATUS SPR supported? */
+#define CHIP_HAS_PROC_STATUS_SPR() 0
+
+/** Log of the number of mshims we have. */
+#define CHIP_LOG_NUM_MSHIMS() 2
+
+/** Are the bases of the interrupt vector areas fixed? */
+#define CHIP_HAS_FIXED_INTVEC_BASE() 1
+
+/** Are the interrupt masks split up into 2 SPRs? */
+#define CHIP_HAS_SPLIT_INTR_MASK() 1
+
+/** Is the cycle count split up into 2 SPRs? */
+#define CHIP_HAS_SPLIT_CYCLE() 1
+
+/** Does the chip have a static network? */
+#define CHIP_HAS_SN() 1
+
+/** Does the chip have a static network processor? */
+#define CHIP_HAS_SN_PROC() 1
+
+/** Size of the L1 static network processor instruction cache, in bytes. */
+#define CHIP_L1SNI_CACHE_SIZE() 2048
+
+/** Does the chip have DMA support in each tile? */
+#define CHIP_HAS_TILE_DMA() 1
+
+/** Does the chip have the second revision of the directly accessible
+ *  dynamic networks?  This encapsulates a number of characteristics,
+ *  including the absence of the catch-all, the absence of inline message
+ *  tags, the absence of support for network context-switching, and so on.
+ */
+#define CHIP_HAS_REV1_XDN() 0
+
+/** Does the chip have cmpexch and similar (fetchadd, exch, etc.)? */
+#define CHIP_HAS_CMPEXCH() 0
+
+/** Does the chip have memory-mapped I/O support? */
+#define CHIP_HAS_MMIO() 0
+
+/** Does the chip have post-completion interrupts? */
+#define CHIP_HAS_POST_COMPLETION_INTERRUPTS() 0
+
+/** Does the chip have native single step support? */
+#define CHIP_HAS_SINGLE_STEP() 0
+
+#ifndef __OPEN_SOURCE__  /* features only relevant to hypervisor-level code */
+
+/** How many entries are present in the instruction TLB? */
+#define CHIP_ITLB_ENTRIES() 8
+
+/** How many entries are present in the data TLB? */
+#define CHIP_DTLB_ENTRIES() 16
+
+/** How many MAF entries does the XAUI shim have? */
+#define CHIP_XAUI_MAF_ENTRIES() 16
+
+/** Does the memory shim have a source-id table? */
+#define CHIP_HAS_MSHIM_SRCID_TABLE() 1
+
+/** Does the L1 instruction cache clear on reset? */
+#define CHIP_HAS_L1I_CLEAR_ON_RESET() 0
+
+/** Does the chip come out of reset with valid coordinates on all tiles?
+ * Note that if defined, this also implies that the upper left is 1,1.
+ */
+#define CHIP_HAS_VALID_TILE_COORD_RESET() 0
+
+/** Does the chip have unified packet formats? */
+#define CHIP_HAS_UNIFIED_PACKET_FORMATS() 0
+
+/** Does the chip support write reordering? */
+#define CHIP_HAS_WRITE_REORDERING() 0
+
+/** Does the chip support Y-X routing as well as X-Y? */
+#define CHIP_HAS_Y_X_ROUTING() 0
+
+/** Is INTCTRL_3 managed with the correct MPL? */
+#define CHIP_HAS_INTCTRL_3_STATUS_FIX() 0
+
+/** Is it possible to configure the chip to be big-endian? */
+#define CHIP_HAS_BIG_ENDIAN_CONFIG() 0
+
+/** Is the CACHE_RED_WAY_OVERRIDDEN SPR supported? */
+#define CHIP_HAS_CACHE_RED_WAY_OVERRIDDEN() 0
+
+/** Is the DIAG_TRACE_WAY SPR supported? */
+#define CHIP_HAS_DIAG_TRACE_WAY() 0
+
+/** Is the MEM_STRIPE_CONFIG SPR supported? */
+#define CHIP_HAS_MEM_STRIPE_CONFIG() 0
+
+/** Are the TLB_PERF SPRs supported? */
+#define CHIP_HAS_TLB_PERF() 0
+
+/** Is the VDN_SNOOP_SHIM_CTL SPR supported? */
+#define CHIP_HAS_VDN_SNOOP_SHIM_CTL() 0
+
+/** Does the chip support rev1 DMA packets? */
+#define CHIP_HAS_REV1_DMA_PACKETS() 0
+
+/** Does the chip have an IPI shim? */
+#define CHIP_HAS_IPI() 0
+
+#endif /* !__OPEN_SOURCE__ */
+#endif /* __ARCH_CHIP_H__ */

arch/tile/include/arch/chip_tilepro.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+/*
+ * @file
+ * Global header file.
+ * This header file specifies defines for TILEPro.
+ */
+
+#ifndef __ARCH_CHIP_H__
+#define __ARCH_CHIP_H__
+
+/** Specify chip version.
+ * When possible, prefer the CHIP_xxx symbols below for future-proofing.
+ * This is intended for cross-compiling; native compilation should
+ * use the predefined __tile_chip__ symbol.
+ */
+#define TILE_CHIP 1
+
+/** Specify chip revision.
+ * This provides for the case of a respin of a particular chip type;
+ * the normal value for this symbol is "0".
+ * This is intended for cross-compiling; native compilation should
+ * use the predefined __tile_chip_rev__ symbol.
+ */
+#define TILE_CHIP_REV 0
+
+/** The name of this architecture. */
+#define CHIP_ARCH_NAME "tilepro"
+
+/** The ELF e_machine type for binaries for this chip. */
+#define CHIP_ELF_TYPE() EM_TILEPRO
+
+/** The alternate ELF e_machine type for binaries for this chip. */
+#define CHIP_COMPAT_ELF_TYPE() 0x2507
+
+/** What is the native word size of the machine? */
+#define CHIP_WORD_SIZE() 32
+
+/** How many bits of a virtual address are used. Extra bits must be
+ * the sign extension of the low bits.
+ */
+#define CHIP_VA_WIDTH() 32
+
+/** How many bits are in a physical address? */
+#define CHIP_PA_WIDTH() 36
+
+/** Size of the L2 cache, in bytes. */
+#define CHIP_L2_CACHE_SIZE() 65536
+
+/** Log size of an L2 cache line in bytes. */
+#define CHIP_L2_LOG_LINE_SIZE() 6
+
+/** Size of an L2 cache line, in bytes. */
+#define CHIP_L2_LINE_SIZE() (1 << CHIP_L2_LOG_LINE_SIZE())
+
+/** Associativity of the L2 cache. */
+#define CHIP_L2_ASSOC() 4
+
+/** Size of the L1 data cache, in bytes. */
+#define CHIP_L1D_CACHE_SIZE() 8192
+
+/** Log size of an L1 data cache line in bytes. */
+#define CHIP_L1D_LOG_LINE_SIZE() 4
+
+/** Size of an L1 data cache line, in bytes. */
+#define CHIP_L1D_LINE_SIZE() (1 << CHIP_L1D_LOG_LINE_SIZE())
+
+/** Associativity of the L1 data cache. */
+#define CHIP_L1D_ASSOC() 2
+
+/** Size of the L1 instruction cache, in bytes. */
+#define CHIP_L1I_CACHE_SIZE() 16384
+
+/** Log size of an L1 instruction cache line in bytes. */
+#define CHIP_L1I_LOG_LINE_SIZE() 6
+
+/** Size of an L1 instruction cache line, in bytes. */
+#define CHIP_L1I_LINE_SIZE() (1 << CHIP_L1I_LOG_LINE_SIZE())
+
+/** Associativity of the L1 instruction cache. */
+#define CHIP_L1I_ASSOC() 1
+
+/** Stride with which flush instructions must be issued. */
+#define CHIP_FLUSH_STRIDE() CHIP_L2_LINE_SIZE()
+
+/** Stride with which inv instructions must be issued. */
+#define CHIP_INV_STRIDE() CHIP_L2_LINE_SIZE()
+
+/** Stride with which finv instructions must be issued. */
+#define CHIP_FINV_STRIDE() CHIP_L2_LINE_SIZE()
+
+/** Can the local cache coherently cache data that is homed elsewhere? */
+#define CHIP_HAS_COHERENT_LOCAL_CACHE() 1
+
+/** How many simultaneous outstanding victims can the L2 cache have? */
+#define CHIP_MAX_OUTSTANDING_VICTIMS() 4
+
+/** Does the TLB support the NC and NOALLOC bits? */
+#define CHIP_HAS_NC_AND_NOALLOC_BITS() 1
+
+/** Does the chip support hash-for-home caching? */
+#define CHIP_HAS_CBOX_HOME_MAP() 1
+
+/** Number of entries in the chip's home map tables. */
+#define CHIP_CBOX_HOME_MAP_SIZE() 64
+
+/** Do uncacheable requests miss in the cache regardless of whether
+ * there is matching data? */
+#define CHIP_HAS_ENFORCED_UNCACHEABLE_REQUESTS() 1
+
+/** Does the mf instruction wait for victims? */
+#define CHIP_HAS_MF_WAITS_FOR_VICTIMS() 0
+
+/** Does the chip have an "inv" instruction that doesn't also flush? */
+#define CHIP_HAS_INV() 1
+
+/** Does the chip have a "wh64" instruction? */
+#define CHIP_HAS_WH64() 1
+
+/** Does this chip have a 'dword_align' instruction? */
+#define CHIP_HAS_DWORD_ALIGN() 1
+
+/** Number of performance counters. */
+#define CHIP_PERFORMANCE_COUNTERS() 4
+
+/** Does this chip have auxiliary performance counters? */
+#define CHIP_HAS_AUX_PERF_COUNTERS() 1
+
+/** Is the CBOX_MSR1 SPR supported? */
+#define CHIP_HAS_CBOX_MSR1() 1
+
+/** Is the TILE_RTF_HWM SPR supported? */
+#define CHIP_HAS_TILE_RTF_HWM() 1
+
+/** Is the TILE_WRITE_PENDING SPR supported? */
+#define CHIP_HAS_TILE_WRITE_PENDING() 1
+
+/** Is the PROC_STATUS SPR supported? */
+#define CHIP_HAS_PROC_STATUS_SPR() 1
+
+/** Log of the number of mshims we have. */
+#define CHIP_LOG_NUM_MSHIMS() 2
+
+/** Are the bases of the interrupt vector areas fixed? */
+#define CHIP_HAS_FIXED_INTVEC_BASE() 1
+
+/** Are the interrupt masks split up into 2 SPRs? */
+#define CHIP_HAS_SPLIT_INTR_MASK() 1
+
+/** Is the cycle count split up into 2 SPRs? */
+#define CHIP_HAS_SPLIT_CYCLE() 1
+
+/** Does the chip have a static network? */
+#define CHIP_HAS_SN() 1
+
+/** Does the chip have a static network processor? */
+#define CHIP_HAS_SN_PROC() 0
+
+/** Size of the L1 static network processor instruction cache, in bytes. */
+/* #define CHIP_L1SNI_CACHE_SIZE() -- does not apply to chip 1 */
+
+/** Does the chip have DMA support in each tile? */
+#define CHIP_HAS_TILE_DMA() 1
+
+/** Does the chip have the second revision of the directly accessible
+ *  dynamic networks?  This encapsulates a number of characteristics,
+ *  including the absence of the catch-all, the absence of inline message
+ *  tags, the absence of support for network context-switching, and so on.
+ */
+#define CHIP_HAS_REV1_XDN() 0
+
+/** Does the chip have cmpexch and similar (fetchadd, exch, etc.)? */
+#define CHIP_HAS_CMPEXCH() 0
+
+/** Does the chip have memory-mapped I/O support? */
+#define CHIP_HAS_MMIO() 0
+
+/** Does the chip have post-completion interrupts? */
+#define CHIP_HAS_POST_COMPLETION_INTERRUPTS() 0
+
+/** Does the chip have native single step support? */
+#define CHIP_HAS_SINGLE_STEP() 0
+
+#ifndef __OPEN_SOURCE__  /* features only relevant to hypervisor-level code */
+
+/** How many entries are present in the instruction TLB? */
+#define CHIP_ITLB_ENTRIES() 16
+
+/** How many entries are present in the data TLB? */
+#define CHIP_DTLB_ENTRIES() 16
+
+/** How many MAF entries does the XAUI shim have? */
+#define CHIP_XAUI_MAF_ENTRIES() 32
+
+/** Does the memory shim have a source-id table? */
+#define CHIP_HAS_MSHIM_SRCID_TABLE() 0
+
+/** Does the L1 instruction cache clear on reset? */
+#define CHIP_HAS_L1I_CLEAR_ON_RESET() 1
+
+/** Does the chip come out of reset with valid coordinates on all tiles?
+ * Note that if defined, this also implies that the upper left is 1,1.
+ */
+#define CHIP_HAS_VALID_TILE_COORD_RESET() 1
+
+/** Does the chip have unified packet formats? */
+#define CHIP_HAS_UNIFIED_PACKET_FORMATS() 1
+
+/** Does the chip support write reordering? */
+#define CHIP_HAS_WRITE_REORDERING() 1
+
+/** Does the chip support Y-X routing as well as X-Y? */
+#define CHIP_HAS_Y_X_ROUTING() 1
+
+/** Is INTCTRL_3 managed with the correct MPL? */
+#define CHIP_HAS_INTCTRL_3_STATUS_FIX() 1
+
+/** Is it possible to configure the chip to be big-endian? */
+#define CHIP_HAS_BIG_ENDIAN_CONFIG() 1
+
+/** Is the CACHE_RED_WAY_OVERRIDDEN SPR supported? */
+#define CHIP_HAS_CACHE_RED_WAY_OVERRIDDEN() 1
+
+/** Is the DIAG_TRACE_WAY SPR supported? */
+#define CHIP_HAS_DIAG_TRACE_WAY() 1
+
+/** Is the MEM_STRIPE_CONFIG SPR supported? */
+#define CHIP_HAS_MEM_STRIPE_CONFIG() 1
+
+/** Are the TLB_PERF SPRs supported? */
+#define CHIP_HAS_TLB_PERF() 1
+
+/** Is the VDN_SNOOP_SHIM_CTL SPR supported? */
+#define CHIP_HAS_VDN_SNOOP_SHIM_CTL() 1
+
+/** Does the chip support rev1 DMA packets? */
+#define CHIP_HAS_REV1_DMA_PACKETS() 1
+
+/** Does the chip have an IPI shim? */
+#define CHIP_HAS_IPI() 0
+
+#endif /* !__OPEN_SOURCE__ */
+#endif /* __ARCH_CHIP_H__ */

arch/tile/include/arch/icache.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ *
+ */
+
+/**
+ * @file
+ *
+ * Support for invalidating bytes in the instruction
+ */
+
+#ifndef __ARCH_ICACHE_H__
+#define __ARCH_ICACHE_H__
+
+#include <arch/chip.h>
+
+
+/**
+ * Invalidate the instruction cache for the given range of memory.
+ *
+ * @param addr The start of memory to be invalidated.
+ * @param size The number of bytes to be invalidated.
+ * @param page_size The system's page size, typically the PAGE_SIZE constant
+ * in sys/page.h.  This value must be a power of two no larger
+ * than the page containing the code to be invalidated. If the value
+ * is smaller than the actual page size, this function will still
+ * work, but may run slower than necessary.
+ */
+static __inline void
+invalidate_icache(const void* addr, unsigned long size,
+                  unsigned long page_size)
+{
+  const unsigned long cache_way_size =
+    CHIP_L1I_CACHE_SIZE() / CHIP_L1I_ASSOC();
+  unsigned long max_useful_size;
+  const char* start, *end;
+  long num_passes;
+
+  if (__builtin_expect(size == 0, 0))
+    return;
+
+#ifdef __tilegx__
+  /* Limit the number of bytes visited to avoid redundant iterations. */
+  max_useful_size = (page_size < cache_way_size) ? page_size : cache_way_size;
+
+  /* No PA aliasing is possible, so one pass always suffices. */
+  num_passes = 1;
+#else
+  /* Limit the number of bytes visited to avoid redundant iterations. */
+  max_useful_size = cache_way_size;
+
+  /*
+   * Compute how many passes we need (we'll treat 0 as if it were 1).
+   * This works because we know the page size is a power of two.
+   */
+  num_passes = cache_way_size >> __builtin_ctzl(page_size);
+#endif
+
+  if (__builtin_expect(size > max_useful_size, 0))
+    size = max_useful_size;
+
+  /* Locate the first and last bytes to be invalidated. */
+  start = (const char *)((unsigned long)addr & -CHIP_L1I_LINE_SIZE());
+  end = (const char*)addr + size - 1;
+
+  __insn_mf();
+
+  do
+  {
+    const char* p;
+
+    for (p = start; p <= end; p += CHIP_L1I_LINE_SIZE())
+      __insn_icoh(p);
+
+    start += page_size;
+    end += page_size;
+  }
+  while (--num_passes > 0);
+
+  __insn_drain();
+}
+
+
+#endif /* __ARCH_ICACHE_H__ */

arch/tile/include/arch/interrupts.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifdef __tilegx__
+#include <arch/interrupts_64.h>
+#else
+#include <arch/interrupts_32.h>
+#endif

arch/tile/include/arch/interrupts_32.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef __ARCH_INTERRUPTS_H__
+#define __ARCH_INTERRUPTS_H__
+
+/** Mask for an interrupt. */
+#ifdef __ASSEMBLER__
+/* Note: must handle breaking interrupts into high and low words manually. */
+#define INT_MASK(intno) (1 << (intno))
+#else
+#define INT_MASK(intno) (1ULL << (intno))
+#endif
+
+
+/** Where a given interrupt executes */
+#define INTERRUPT_VECTOR(i, pl) (0xFC000000 + ((pl) << 24) + ((i) << 8))
+
+/** Where to store a vector for a given interrupt. */
+#define USER_INTERRUPT_VECTOR(i) INTERRUPT_VECTOR(i, 0)
+
+/** The base address of user-level interrupts. */
+#define USER_INTERRUPT_VECTOR_BASE INTERRUPT_VECTOR(0, 0)
+
+
+/** Additional synthetic interrupt. */
+#define INT_BREAKPOINT (63)
+
+#define INT_ITLB_MISS    0
+#define INT_MEM_ERROR    1
+#define INT_ILL    2
+#define INT_GPV    3
+#define INT_SN_ACCESS    4
+#define INT_IDN_ACCESS    5
+#define INT_UDN_ACCESS    6
+#define INT_IDN_REFILL    7
+#define INT_UDN_REFILL    8
+#define INT_IDN_COMPLETE    9
+#define INT_UDN_COMPLETE   10
+#define INT_SWINT_3   11
+#define INT_SWINT_2   12
+#define INT_SWINT_1   13
+#define INT_SWINT_0   14
+#define INT_UNALIGN_DATA   15
+#define INT_DTLB_MISS   16
+#define INT_DTLB_ACCESS   17
+#define INT_DMATLB_MISS   18
+#define INT_DMATLB_ACCESS   19
+#define INT_SNITLB_MISS   20
+#define INT_SN_NOTIFY   21
+#define INT_SN_FIREWALL   22
+#define INT_IDN_FIREWALL   23
+#define INT_UDN_FIREWALL   24
+#define INT_TILE_TIMER   25
+#define INT_IDN_TIMER   26
+#define INT_UDN_TIMER   27
+#define INT_DMA_NOTIFY   28
+#define INT_IDN_CA   29
+#define INT_UDN_CA   30
+#define INT_IDN_AVAIL   31
+#define INT_UDN_AVAIL   32
+#define INT_PERF_COUNT   33
+#define INT_INTCTRL_3   34
+#define INT_INTCTRL_2   35
+#define INT_INTCTRL_1   36
+#define INT_INTCTRL_0   37
+#define INT_BOOT_ACCESS   38
+#define INT_WORLD_ACCESS   39
+#define INT_I_ASID   40
+#define INT_D_ASID   41
+#define INT_DMA_ASID   42
+#define INT_SNI_ASID   43
+#define INT_DMA_CPL   44
+#define INT_SN_CPL   45
+#define INT_DOUBLE_FAULT   46
+#define INT_SN_STATIC_ACCESS   47
+#define INT_AUX_PERF_COUNT   48
+
+#define NUM_INTERRUPTS 49
+
+#define QUEUED_INTERRUPTS ( \
+    INT_MASK(INT_MEM_ERROR) | \
+    INT_MASK(INT_DMATLB_MISS) | \
+    INT_MASK(INT_DMATLB_ACCESS) | \
+    INT_MASK(INT_SNITLB_MISS) | \
+    INT_MASK(INT_SN_NOTIFY) | \
+    INT_MASK(INT_SN_FIREWALL) | \
+    INT_MASK(INT_IDN_FIREWALL) | \
+    INT_MASK(INT_UDN_FIREWALL) | \
+    INT_MASK(INT_TILE_TIMER) | \
+    INT_MASK(INT_IDN_TIMER) | \
+    INT_MASK(INT_UDN_TIMER) | \
+    INT_MASK(INT_DMA_NOTIFY) | \
+    INT_MASK(INT_IDN_CA) | \
+    INT_MASK(INT_UDN_CA) | \
+    INT_MASK(INT_IDN_AVAIL) | \
+    INT_MASK(INT_UDN_AVAIL) | \
+    INT_MASK(INT_PERF_COUNT) | \
+    INT_MASK(INT_INTCTRL_3) | \
+    INT_MASK(INT_INTCTRL_2) | \
+    INT_MASK(INT_INTCTRL_1) | \
+    INT_MASK(INT_INTCTRL_0) | \
+    INT_MASK(INT_BOOT_ACCESS) | \
+    INT_MASK(INT_WORLD_ACCESS) | \
+    INT_MASK(INT_I_ASID) | \
+    INT_MASK(INT_D_ASID) | \
+    INT_MASK(INT_DMA_ASID) | \
+    INT_MASK(INT_SNI_ASID) | \
+    INT_MASK(INT_DMA_CPL) | \
+    INT_MASK(INT_SN_CPL) | \
+    INT_MASK(INT_DOUBLE_FAULT) | \
+    INT_MASK(INT_AUX_PERF_COUNT) | \
+    0)
+#define NONQUEUED_INTERRUPTS ( \
+    INT_MASK(INT_ITLB_MISS) | \
+    INT_MASK(INT_ILL) | \
+    INT_MASK(INT_GPV) | \
+    INT_MASK(INT_SN_ACCESS) | \
+    INT_MASK(INT_IDN_ACCESS) | \
+    INT_MASK(INT_UDN_ACCESS) | \
+    INT_MASK(INT_IDN_REFILL) | \
+    INT_MASK(INT_UDN_REFILL) | \
+    INT_MASK(INT_IDN_COMPLETE) | \
+    INT_MASK(INT_UDN_COMPLETE) | \
+    INT_MASK(INT_SWINT_3) | \
+    INT_MASK(INT_SWINT_2) | \
+    INT_MASK(INT_SWINT_1) | \
+    INT_MASK(INT_SWINT_0) | \
+    INT_MASK(INT_UNALIGN_DATA) | \
+    INT_MASK(INT_DTLB_MISS) | \
+    INT_MASK(INT_DTLB_ACCESS) | \
+    INT_MASK(INT_SN_STATIC_ACCESS) | \
+    0)
+#define CRITICAL_MASKED_INTERRUPTS ( \
+    INT_MASK(INT_MEM_ERROR) | \
+    INT_MASK(INT_DMATLB_MISS) | \
+    INT_MASK(INT_DMATLB_ACCESS) | \
+    INT_MASK(INT_SNITLB_MISS) | \
+    INT_MASK(INT_SN_NOTIFY) | \
+    INT_MASK(INT_SN_FIREWALL) | \
+    INT_MASK(INT_IDN_FIREWALL) | \
+    INT_MASK(INT_UDN_FIREWALL) | \
+    INT_MASK(INT_TILE_TIMER) | \
+    INT_MASK(INT_IDN_TIMER) | \
+    INT_MASK(INT_UDN_TIMER) | \
+    INT_MASK(INT_DMA_NOTIFY) | \
+    INT_MASK(INT_IDN_CA) | \
+    INT_MASK(INT_UDN_CA) | \
+    INT_MASK(INT_IDN_AVAIL) | \
+    INT_MASK(INT_UDN_AVAIL) | \
+    INT_MASK(INT_PERF_COUNT) | \
+    INT_MASK(INT_INTCTRL_3) | \
+    INT_MASK(INT_INTCTRL_2) | \
+    INT_MASK(INT_INTCTRL_1) | \
+    INT_MASK(INT_INTCTRL_0) | \
+    INT_MASK(INT_AUX_PERF_COUNT) | \
+    0)
+#define CRITICAL_UNMASKED_INTERRUPTS ( \
+    INT_MASK(INT_ITLB_MISS) | \
+    INT_MASK(INT_ILL) | \
+    INT_MASK(INT_GPV) | \
+    INT_MASK(INT_SN_ACCESS) | \
+    INT_MASK(INT_IDN_ACCESS) | \
+    INT_MASK(INT_UDN_ACCESS) | \
+    INT_MASK(INT_IDN_REFILL) | \
+    INT_MASK(INT_UDN_REFILL) | \
+    INT_MASK(INT_IDN_COMPLETE) | \
+    INT_MASK(INT_UDN_COMPLETE) | \
+    INT_MASK(INT_SWINT_3) | \
+    INT_MASK(INT_SWINT_2) | \
+    INT_MASK(INT_SWINT_1) | \
+    INT_MASK(INT_SWINT_0) | \
+    INT_MASK(INT_UNALIGN_DATA) | \
+    INT_MASK(INT_DTLB_MISS) | \
+    INT_MASK(INT_DTLB_ACCESS) | \
+    INT_MASK(INT_BOOT_ACCESS) | \
+    INT_MASK(INT_WORLD_ACCESS) | \
+    INT_MASK(INT_I_ASID) | \
+    INT_MASK(INT_D_ASID) | \
+    INT_MASK(INT_DMA_ASID) | \
+    INT_MASK(INT_SNI_ASID) | \
+    INT_MASK(INT_DMA_CPL) | \
+    INT_MASK(INT_SN_CPL) | \
+    INT_MASK(INT_DOUBLE_FAULT) | \
+    INT_MASK(INT_SN_STATIC_ACCESS) | \
+    0)
+#define MASKABLE_INTERRUPTS ( \
+    INT_MASK(INT_MEM_ERROR) | \
+    INT_MASK(INT_IDN_REFILL) | \
+    INT_MASK(INT_UDN_REFILL) | \
+    INT_MASK(INT_IDN_COMPLETE) | \
+    INT_MASK(INT_UDN_COMPLETE) | \
+    INT_MASK(INT_DMATLB_MISS) | \
+    INT_MASK(INT_DMATLB_ACCESS) | \
+    INT_MASK(INT_SNITLB_MISS) | \
+    INT_MASK(INT_SN_NOTIFY) | \
+    INT_MASK(INT_SN_FIREWALL) | \
+    INT_MASK(INT_IDN_FIREWALL) | \
+    INT_MASK(INT_UDN_FIREWALL) | \
+    INT_MASK(INT_TILE_TIMER) | \
+    INT_MASK(INT_IDN_TIMER) | \
+    INT_MASK(INT_UDN_TIMER) | \
+    INT_MASK(INT_DMA_NOTIFY) | \
+    INT_MASK(INT_IDN_CA) | \
+    INT_MASK(INT_UDN_CA) | \
+    INT_MASK(INT_IDN_AVAIL) | \
+    INT_MASK(INT_UDN_AVAIL) | \
+    INT_MASK(INT_PERF_COUNT) | \
+    INT_MASK(INT_INTCTRL_3) | \
+    INT_MASK(INT_INTCTRL_2) | \
+    INT_MASK(INT_INTCTRL_1) | \
+    INT_MASK(INT_INTCTRL_0) | \
+    INT_MASK(INT_AUX_PERF_COUNT) | \
+    0)
+#define UNMASKABLE_INTERRUPTS ( \
+    INT_MASK(INT_ITLB_MISS) | \
+    INT_MASK(INT_ILL) | \
+    INT_MASK(INT_GPV) | \
+    INT_MASK(INT_SN_ACCESS) | \
+    INT_MASK(INT_IDN_ACCESS) | \
+    INT_MASK(INT_UDN_ACCESS) | \
+    INT_MASK(INT_SWINT_3) | \
+    INT_MASK(INT_SWINT_2) | \
+    INT_MASK(INT_SWINT_1) | \
+    INT_MASK(INT_SWINT_0) | \
+    INT_MASK(INT_UNALIGN_DATA) | \
+    INT_MASK(INT_DTLB_MISS) | \
+    INT_MASK(INT_DTLB_ACCESS) | \
+    INT_MASK(INT_BOOT_ACCESS) | \
+    INT_MASK(INT_WORLD_ACCESS) | \
+    INT_MASK(INT_I_ASID) | \
+    INT_MASK(INT_D_ASID) | \
+    INT_MASK(INT_DMA_ASID) | \
+    INT_MASK(INT_SNI_ASID) | \
+    INT_MASK(INT_DMA_CPL) | \
+    INT_MASK(INT_SN_CPL) | \
+    INT_MASK(INT_DOUBLE_FAULT) | \
+    INT_MASK(INT_SN_STATIC_ACCESS) | \
+    0)
+#define SYNC_INTERRUPTS ( \
+    INT_MASK(INT_ITLB_MISS) | \
+    INT_MASK(INT_ILL) | \
+    INT_MASK(INT_GPV) | \
+    INT_MASK(INT_SN_ACCESS) | \
+    INT_MASK(INT_IDN_ACCESS) | \
+    INT_MASK(INT_UDN_ACCESS) | \
+    INT_MASK(INT_IDN_REFILL) | \
+    INT_MASK(INT_UDN_REFILL) | \
+    INT_MASK(INT_IDN_COMPLETE) | \
+    INT_MASK(INT_UDN_COMPLETE) | \
+    INT_MASK(INT_SWINT_3) | \
+    INT_MASK(INT_SWINT_2) | \
+    INT_MASK(INT_SWINT_1) | \
+    INT_MASK(INT_SWINT_0) | \
+    INT_MASK(INT_UNALIGN_DATA) | \
+    INT_MASK(INT_DTLB_MISS) | \
+    INT_MASK(INT_DTLB_ACCESS) | \
+    INT_MASK(INT_SN_STATIC_ACCESS) | \
+    0)
+#define NON_SYNC_INTERRUPTS ( \
+    INT_MASK(INT_MEM_ERROR) | \
+    INT_MASK(INT_DMATLB_MISS) | \
+    INT_MASK(INT_DMATLB_ACCESS) | \
+    INT_MASK(INT_SNITLB_MISS) | \
+    INT_MASK(INT_SN_NOTIFY) | \
+    INT_MASK(INT_SN_FIREWALL) | \
+    INT_MASK(INT_IDN_FIREWALL) | \
+    INT_MASK(INT_UDN_FIREWALL) | \
+    INT_MASK(INT_TILE_TIMER) | \
+    INT_MASK(INT_IDN_TIMER) | \
+    INT_MASK(INT_UDN_TIMER) | \
+    INT_MASK(INT_DMA_NOTIFY) | \
+    INT_MASK(INT_IDN_CA) | \
+    INT_MASK(INT_UDN_CA) | \
+    INT_MASK(INT_IDN_AVAIL) | \
+    INT_MASK(INT_UDN_AVAIL) | \
+    INT_MASK(INT_PERF_COUNT) | \
+    INT_MASK(INT_INTCTRL_3) | \
+    INT_MASK(INT_INTCTRL_2) | \
+    INT_MASK(INT_INTCTRL_1) | \
+    INT_MASK(INT_INTCTRL_0) | \
+    INT_MASK(INT_BOOT_ACCESS) | \
+    INT_MASK(INT_WORLD_ACCESS) | \
+    INT_MASK(INT_I_ASID) | \
+    INT_MASK(INT_D_ASID) | \
+    INT_MASK(INT_DMA_ASID) | \
+    INT_MASK(INT_SNI_ASID) | \
+    INT_MASK(INT_DMA_CPL) | \
+    INT_MASK(INT_SN_CPL) | \
+    INT_MASK(INT_DOUBLE_FAULT) | \
+    INT_MASK(INT_AUX_PERF_COUNT) | \
+    0)
+#endif /* !__ARCH_INTERRUPTS_H__ */

arch/tile/include/arch/spr_def.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifdef __tilegx__
+#include <arch/spr_def_64.h>
+#else
+#include <arch/spr_def_32.h>
+#endif

arch/tile/include/arch/spr_def_32.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef __DOXYGEN__
+
+#ifndef __ARCH_SPR_DEF_H__
+#define __ARCH_SPR_DEF_H__
+
+#define SPR_AUX_PERF_COUNT_0 0x6005
+#define SPR_AUX_PERF_COUNT_1 0x6006
+#define SPR_AUX_PERF_COUNT_CTL 0x6007
+#define SPR_AUX_PERF_COUNT_STS 0x6008
+#define SPR_CYCLE_HIGH 0x4e06
+#define SPR_CYCLE_LOW 0x4e07
+#define SPR_DMA_BYTE 0x3900
+#define SPR_DMA_CHUNK_SIZE 0x3901
+#define SPR_DMA_CTR 0x3902
+#define SPR_DMA_CTR__REQUEST_MASK  0x1
+#define SPR_DMA_CTR__SUSPEND_MASK  0x2
+#define SPR_DMA_DST_ADDR 0x3903
+#define SPR_DMA_DST_CHUNK_ADDR 0x3904
+#define SPR_DMA_SRC_ADDR 0x3905
+#define SPR_DMA_SRC_CHUNK_ADDR 0x3906
+#define SPR_DMA_STATUS__DONE_MASK  0x1
+#define SPR_DMA_STATUS__BUSY_MASK  0x2
+#define SPR_DMA_STATUS__RUNNING_MASK  0x10
+#define SPR_DMA_STRIDE 0x3907
+#define SPR_DMA_USER_STATUS 0x3908
+#define SPR_DONE 0x4e08
+#define SPR_EVENT_BEGIN 0x4e0d
+#define SPR_EVENT_END 0x4e0e
+#define SPR_EX_CONTEXT_0_0 0x4a05
+#define SPR_EX_CONTEXT_0_1 0x4a06
+#define SPR_EX_CONTEXT_0_1__PL_SHIFT 0
+#define SPR_EX_CONTEXT_0_1__PL_RMASK 0x3
+#define SPR_EX_CONTEXT_0_1__PL_MASK  0x3
+#define SPR_EX_CONTEXT_0_1__ICS_SHIFT 2
+#define SPR_EX_CONTEXT_0_1__ICS_RMASK 0x1
+#define SPR_EX_CONTEXT_0_1__ICS_MASK  0x4
+#define SPR_EX_CONTEXT_1_0 0x4805
+#define SPR_EX_CONTEXT_1_1 0x4806
+#define SPR_EX_CONTEXT_1_1__PL_SHIFT 0
+#define SPR_EX_CONTEXT_1_1__PL_RMASK 0x3
+#define SPR_EX_CONTEXT_1_1__PL_MASK  0x3
+#define SPR_EX_CONTEXT_1_1__ICS_SHIFT 2
+#define SPR_EX_CONTEXT_1_1__ICS_RMASK 0x1
+#define SPR_EX_CONTEXT_1_1__ICS_MASK  0x4
+#define SPR_FAIL 0x4e09
+#define SPR_INTCTRL_0_STATUS 0x4a07
+#define SPR_INTCTRL_1_STATUS 0x4807
+#define SPR_INTERRUPT_CRITICAL_SECTION 0x4e0a
+#define SPR_INTERRUPT_MASK_0_0 0x4a08
+#define SPR_INTERRUPT_MASK_0_1 0x4a09
+#define SPR_INTERRUPT_MASK_1_0 0x4809
+#define SPR_INTERRUPT_MASK_1_1 0x480a
+#define SPR_INTERRUPT_MASK_RESET_0_0 0x4a0a
+#define SPR_INTERRUPT_MASK_RESET_0_1 0x4a0b
+#define SPR_INTERRUPT_MASK_RESET_1_0 0x480b
+#define SPR_INTERRUPT_MASK_RESET_1_1 0x480c
+#define SPR_INTERRUPT_MASK_SET_0_0 0x4a0c
+#define SPR_INTERRUPT_MASK_SET_0_1 0x4a0d
+#define SPR_INTERRUPT_MASK_SET_1_0 0x480d
+#define SPR_INTERRUPT_MASK_SET_1_1 0x480e
+#define SPR_MPL_DMA_CPL_SET_0 0x5800
+#define SPR_MPL_DMA_CPL_SET_1 0x5801
+#define SPR_MPL_DMA_NOTIFY_SET_0 0x3800
+#define SPR_MPL_DMA_NOTIFY_SET_1 0x3801
+#define SPR_MPL_INTCTRL_0_SET_0 0x4a00
+#define SPR_MPL_INTCTRL_0_SET_1 0x4a01
+#define SPR_MPL_INTCTRL_1_SET_0 0x4800
+#define SPR_MPL_INTCTRL_1_SET_1 0x4801
+#define SPR_MPL_SN_ACCESS_SET_0 0x0800
+#define SPR_MPL_SN_ACCESS_SET_1 0x0801
+#define SPR_MPL_SN_CPL_SET_0 0x5a00
+#define SPR_MPL_SN_CPL_SET_1 0x5a01
+#define SPR_MPL_SN_FIREWALL_SET_0 0x2c00
+#define SPR_MPL_SN_FIREWALL_SET_1 0x2c01
+#define SPR_MPL_SN_NOTIFY_SET_0 0x2a00
+#define SPR_MPL_SN_NOTIFY_SET_1 0x2a01
+#define SPR_MPL_UDN_ACCESS_SET_0 0x0c00
+#define SPR_MPL_UDN_ACCESS_SET_1 0x0c01
+#define SPR_MPL_UDN_AVAIL_SET_0 0x4000
+#define SPR_MPL_UDN_AVAIL_SET_1 0x4001
+#define SPR_MPL_UDN_CA_SET_0 0x3c00
+#define SPR_MPL_UDN_CA_SET_1 0x3c01
+#define SPR_MPL_UDN_COMPLETE_SET_0 0x1400
+#define SPR_MPL_UDN_COMPLETE_SET_1 0x1401
+#define SPR_MPL_UDN_FIREWALL_SET_0 0x3000
+#define SPR_MPL_UDN_FIREWALL_SET_1 0x3001
+#define SPR_MPL_UDN_REFILL_SET_0 0x1000
+#define SPR_MPL_UDN_REFILL_SET_1 0x1001
+#define SPR_MPL_UDN_TIMER_SET_0 0x3600
+#define SPR_MPL_UDN_TIMER_SET_1 0x3601
+#define SPR_MPL_WORLD_ACCESS_SET_0 0x4e00
+#define SPR_MPL_WORLD_ACCESS_SET_1 0x4e01
+#define SPR_PASS 0x4e0b
+#define SPR_PERF_COUNT_0 0x4205
+#define SPR_PERF_COUNT_1 0x4206
+#define SPR_PERF_COUNT_CTL 0x4207
+#define SPR_PERF_COUNT_STS 0x4208
+#define SPR_PROC_STATUS 0x4f00
+#define SPR_SIM_CONTROL 0x4e0c
+#define SPR_SNCTL 0x0805
+#define SPR_SNCTL__FRZFABRIC_MASK  0x1
+#define SPR_SNCTL__FRZPROC_MASK  0x2
+#define SPR_SNPC 0x080b
+#define SPR_SNSTATIC 0x080c
+#define SPR_SYSTEM_SAVE_0_0 0x4b00
+#define SPR_SYSTEM_SAVE_0_1 0x4b01
+#define SPR_SYSTEM_SAVE_0_2 0x4b02
+#define SPR_SYSTEM_SAVE_0_3 0x4b03
+#define SPR_SYSTEM_SAVE_1_0 0x4900
+#define SPR_SYSTEM_SAVE_1_1 0x4901
+#define SPR_SYSTEM_SAVE_1_2 0x4902
+#define SPR_SYSTEM_SAVE_1_3 0x4903
+#define SPR_TILE_COORD 0x4c17
+#define SPR_TILE_RTF_HWM 0x4e10
+#define SPR_TILE_TIMER_CONTROL 0x3205
+#define SPR_TILE_WRITE_PENDING 0x4e0f
+#define SPR_UDN_AVAIL_EN 0x4005
+#define SPR_UDN_CA_DATA 0x0d00
+#define SPR_UDN_DATA_AVAIL 0x0d03
+#define SPR_UDN_DEADLOCK_TIMEOUT 0x3606
+#define SPR_UDN_DEMUX_CA_COUNT 0x0c05
+#define SPR_UDN_DEMUX_COUNT_0 0x0c06
+#define SPR_UDN_DEMUX_COUNT_1 0x0c07
+#define SPR_UDN_DEMUX_COUNT_2 0x0c08
+#define SPR_UDN_DEMUX_COUNT_3 0x0c09
+#define SPR_UDN_DEMUX_CTL 0x0c0a
+#define SPR_UDN_DEMUX_QUEUE_SEL 0x0c0c
+#define SPR_UDN_DEMUX_STATUS 0x0c0d
+#define SPR_UDN_DEMUX_WRITE_FIFO 0x0c0e
+#define SPR_UDN_DIRECTION_PROTECT 0x3005
+#define SPR_UDN_REFILL_EN 0x1005
+#define SPR_UDN_SP_FIFO_DATA 0x0c11
+#define SPR_UDN_SP_FIFO_SEL 0x0c12
+#define SPR_UDN_SP_FREEZE 0x0c13
+#define SPR_UDN_SP_FREEZE__SP_FRZ_MASK  0x1
+#define SPR_UDN_SP_FREEZE__DEMUX_FRZ_MASK  0x2
+#define SPR_UDN_SP_FREEZE__NON_DEST_EXT_MASK  0x4
+#define SPR_UDN_SP_STATE 0x0c14
+#define SPR_UDN_TAG_0 0x0c15
+#define SPR_UDN_TAG_1 0x0c16
+#define SPR_UDN_TAG_2 0x0c17
+#define SPR_UDN_TAG_3 0x0c18
+#define SPR_UDN_TAG_VALID 0x0c19
+#define SPR_UDN_TILE_COORD 0x0c1a
+
+#endif /* !defined(__ARCH_SPR_DEF_H__) */
+
+#endif /* !defined(__DOXYGEN__) */

arch/tile/include/asm/Kbuild

+include include/asm-generic/Kbuild.asm
+
+header-y += ucontext.h

arch/tile/include/asm/asm-offsets.h

+#include <generated/asm-offsets.h>

arch/tile/include/asm/atomic.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ *
+ * Atomic primitives.
+ */
+
+#ifndef _ASM_TILE_ATOMIC_H
+#define _ASM_TILE_ATOMIC_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/compiler.h>
+#include <asm/system.h>
+
+#define ATOMIC_INIT(i)	{ (i) }
+
+/**
+ * atomic_read - read atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically reads the value of @v.
+ */
+static inline int atomic_read(const atomic_t *v)
+{
+       return v->counter;
+}
+
+/**
+ * atomic_sub_return - subtract integer and return
+ * @v: pointer of type atomic_t
+ * @i: integer value to subtract
+ *
+ * Atomically subtracts @i from @v and returns @v - @i
+ */
+#define atomic_sub_return(i, v)		atomic_add_return((int)(-(i)), (v))
+
+/**
+ * atomic_sub - subtract integer from atomic variable
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+#define atomic_sub(i, v)		atomic_add((int)(-(i)), (v))
+
+/**
+ * atomic_sub_and_test - subtract value from variable and test result
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v and returns true if the result is
+ * zero, or false for all other cases.
+ */
+#define atomic_sub_and_test(i, v)	(atomic_sub_return((i), (v)) == 0)
+
+/**
+ * atomic_inc_return - increment memory and return
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1 and returns the new value.
+ */
+#define atomic_inc_return(v)		atomic_add_return(1, (v))
+
+/**
+ * atomic_dec_return - decrement memory and return
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1 and returns the new value.
+ */
+#define atomic_dec_return(v)		atomic_sub_return(1, (v))
+
+/**
+ * atomic_inc - increment atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1.
+ */
+#define atomic_inc(v)			atomic_add(1, (v))
+
+/**
+ * atomic_dec - decrement atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1.
+ */
+#define atomic_dec(v)			atomic_sub(1, (v))
+
+/**
+ * atomic_dec_and_test - decrement and test
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1 and returns true if the result is 0.
+ */
+#define atomic_dec_and_test(v)		(atomic_dec_return(v) == 0)
+
+/**
+ * atomic_inc_and_test - increment and test
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1 and returns true if the result is 0.
+ */
+#define atomic_inc_and_test(v)		(atomic_inc_return(v) == 0)
+
+/**
+ * atomic_add_negative - add and test if negative
+ * @v: pointer of type atomic_t
+ * @i: integer value to add
+ *
+ * Atomically adds @i to @v and returns true if the result is
+ * negative, or false when result is greater than or equal to zero.
+ */
+#define atomic_add_negative(i, v)	(atomic_add_return((i), (v)) < 0)
+
+/**
+ * atomic_inc_not_zero - increment unless the number is zero
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1, so long as @v is non-zero.
+ * Returns non-zero if @v was non-zero, and zero otherwise.
+ */
+#define atomic_inc_not_zero(v)		atomic_add_unless((v), 1, 0)
+
+
+/*
+ * We define xchg() and cmpxchg() in the included headers.
+ * Note that we do not define __HAVE_ARCH_CMPXCHG, since that would imply
+ * that cmpxchg() is an efficient operation, which is not particularly true.
+ */
+
+/* Nonexistent functions intended to cause link errors. */
+extern unsigned long __xchg_called_with_bad_pointer(void);
+extern unsigned long __cmpxchg_called_with_bad_pointer(void);
+
+#define tas(ptr) (xchg((ptr), 1))
+
+#endif /* __ASSEMBLY__ */
+
+#ifndef __tilegx__
+#include <asm/atomic_32.h>
+#else
+#include <asm/atomic_64.h>
+#endif
+
+/* Provide the appropriate atomic_long_t definitions. */
+#ifndef __ASSEMBLY__
+#include <asm-generic/atomic-long.h>
+#endif
+
+#endif /* _ASM_TILE_ATOMIC_H */

arch/tile/include/asm/auxvec.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_AUXVEC_H
+#define _ASM_TILE_AUXVEC_H
+
+/* No extensions to auxvec */
+
+#endif /* _ASM_TILE_AUXVEC_H */

arch/tile/include/asm/backtrace.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _TILE_BACKTRACE_H
+#define _TILE_BACKTRACE_H
+
+
+
+#include <linux/types.h>
+
+#include <arch/chip.h>
+
+#if CHIP_VA_WIDTH() > 32
+typedef unsigned long long VirtualAddress;
+#else
+typedef unsigned int VirtualAddress;
+#endif
+
+
+/** Reads 'size' bytes from 'address' and writes the data to 'result'.
+ * Returns true if successful, else false (e.g. memory not readable).
+ */
+typedef bool (*BacktraceMemoryReader)(void *result,
+				      VirtualAddress address,
+				      unsigned int size,
+				      void *extra);
+
+typedef struct {
+	/** Current PC. */
+	VirtualAddress pc;
+
+	/** Current stack pointer value. */
+	VirtualAddress sp;
+
+	/** Current frame pointer value (i.e. caller's stack pointer) */
+	VirtualAddress fp;
+
+	/** Internal use only: caller's PC for first frame. */
+	VirtualAddress initial_frame_caller_pc;
+
+	/** Internal use only: callback to read memory. */
+	BacktraceMemoryReader read_memory_func;
+
+	/** Internal use only: arbitrary argument to read_memory_func. */
+	void *read_memory_func_extra;
+
+} BacktraceIterator;
+
+
+/** Initializes a backtracer to start from the given location.
+ *
+ * If the frame pointer cannot be determined it is set to -1.
+ *
+ * @param state The state to be filled in.
+ * @param read_memory_func A callback that reads memory. If NULL, a default
+ *        value is provided.
+ * @param read_memory_func_extra An arbitrary argument to read_memory_func.
+ * @param pc The current PC.
+ * @param lr The current value of the 'lr' register.
+ * @param sp The current value of the 'sp' register.
+ * @param r52 The current value of the 'r52' register.
+ */
+extern void backtrace_init(BacktraceIterator *state,
+			   BacktraceMemoryReader read_memory_func,
+			   void *read_memory_func_extra,
+			   VirtualAddress pc, VirtualAddress lr,
+			   VirtualAddress sp, VirtualAddress r52);
+
+
+/** Advances the backtracing state to the calling frame, returning
+ * true iff successful.
+ */
+extern bool backtrace_next(BacktraceIterator *state);
+
+
+typedef enum {
+
+	/* We have no idea what the caller's pc is. */
+	PC_LOC_UNKNOWN,
+
+	/* The caller's pc is currently in lr. */
+	PC_LOC_IN_LR,
+
+	/* The caller's pc can be found by dereferencing the caller's sp. */
+	PC_LOC_ON_STACK
+
+} CallerPCLocation;
+
+
+typedef enum {
+
+	/* We have no idea what the caller's sp is. */
+	SP_LOC_UNKNOWN,
+
+	/* The caller's sp is currently in r52. */
+	SP_LOC_IN_R52,
+
+	/* The caller's sp can be found by adding a certain constant
+	 * to the current value of sp.
+	 */
+	SP_LOC_OFFSET
+
+} CallerSPLocation;
+
+
+/* Bit values ORed into CALLER_* values for info ops. */
+enum {
+	/* Setting the low bit on any of these values means the info op
+	 * applies only to one bundle ago.
+	 */
+	ONE_BUNDLE_AGO_FLAG = 1,
+
+	/* Setting this bit on a CALLER_SP_* value means the PC is in LR.
+	 * If not set, PC is on the stack.
+	 */
+	PC_IN_LR_FLAG = 2,
+
+	/* This many of the low bits of a CALLER_SP_* value are for the
+	 * flag bits above.
+	 */
+	NUM_INFO_OP_FLAGS = 2,
+
+	/* We cannot have one in the memory pipe so this is the maximum. */
+	MAX_INFO_OPS_PER_BUNDLE = 2
+};
+
+
+/** Internal constants used to define 'info' operands. */
+enum {
+	/* 0 and 1 are reserved, as are all negative numbers. */
+
+	CALLER_UNKNOWN_BASE = 2,
+
+	CALLER_SP_IN_R52_BASE = 4,
+
+	CALLER_SP_OFFSET_BASE = 8
+};
+
+
+/** Current backtracer state describing where it thinks the caller is. */
+typedef struct {
+	/*
+	 * Public fields
+	 */
+
+	/* How do we find the caller's PC? */
+	CallerPCLocation pc_location : 8;
+
+	/* How do we find the caller's SP? */
+	CallerSPLocation sp_location : 8;
+
+	/* If sp_location == SP_LOC_OFFSET, then caller_sp == sp +
+	 * loc->sp_offset. Else this field is undefined.
+	 */
+	uint16_t sp_offset;
+
+	/* In the most recently visited bundle a terminating bundle? */
+	bool at_terminating_bundle;
+
+	/*
+	 * Private fields
+	 */
+
+	/* Will the forward scanner see someone clobbering sp
+	 * (i.e. changing it with something other than addi sp, sp, N?)
+	 */
+	bool sp_clobber_follows;
+
+	/* Operand to next "visible" info op (no more than one bundle past
+	 * the next terminating bundle), or -32768 if none.
+	 */
+	int16_t next_info_operand;
+
+	/* Is the info of in next_info_op in the very next bundle? */
+	bool is_next_info_operand_adjacent;
+
+} CallerLocation;
+
+
+
+
+#endif /* _TILE_BACKTRACE_H */

arch/tile/include/asm/bitops.h

+/*
+ * Copyright 1992, Linus Torvalds.
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_BITOPS_H
+#define _ASM_TILE_BITOPS_H
+
+#include <linux/types.h>
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#ifdef __tilegx__
+#include <asm/bitops_64.h>
+#else
+#include <asm/bitops_32.h>
+#endif
+
+/**
+ * __ffs - find first set bit in word
+ * @word: The word to search
+ *
+ * Undefined if no set bit exists, so code should check against 0 first.
+ */
+static inline unsigned long __ffs(unsigned long word)
+{
+	return __builtin_ctzl(word);
+}
+
+/**
+ * ffz - find first zero bit in word
+ * @word: The word to search
+ *
+ * Undefined if no zero exists, so code should check against ~0UL first.
+ */
+static inline unsigned long ffz(unsigned long word)
+{
+	return __builtin_ctzl(~word);
+}
+
+/**
+ * __fls - find last set bit in word
+ * @word: The word to search
+ *
+ * Undefined if no set bit exists, so code should check against 0 first.
+ */
+static inline unsigned long __fls(unsigned long word)
+{
+	return (sizeof(word) * 8) - 1 - __builtin_clzl(word);
+}
+
+/**
+ * ffs - find first set bit in word
+ * @x: the word to search
+ *
+ * This is defined the same way as the libc and compiler builtin ffs
+ * routines, therefore differs in spirit from the other bitops.
+ *
+ * ffs(value) returns 0 if value is 0 or the position of the first
+ * set bit if value is nonzero. The first (least significant) bit
+ * is at position 1.
+ */
+static inline int ffs(int x)
+{
+	return __builtin_ffs(x);
+}
+
+/**
+ * fls - find last set bit in word
+ * @x: the word to search
+ *
+ * This is defined in a similar way as the libc and compiler builtin
+ * ffs, but returns the position of the most significant set bit.
+ *
+ * fls(value) returns 0 if value is 0 or the position of the last
+ * set bit if value is nonzero. The last (most significant) bit is
+ * at position 32.
+ */
+static inline int fls(int x)
+{
+	return (sizeof(int) * 8) - __builtin_clz(x);
+}
+
+static inline int fls64(__u64 w)
+{
+	return (sizeof(__u64) * 8) - __builtin_clzll(w);
+}
+
+static inline unsigned int hweight32(unsigned int w)
+{
+	return __builtin_popcount(w);
+}
+
+static inline unsigned int hweight16(unsigned int w)
+{
+	return __builtin_popcount(w & 0xffff);
+}
+
+static inline unsigned int hweight8(unsigned int w)
+{
+	return __builtin_popcount(w & 0xff);
+}
+
+static inline unsigned long hweight64(__u64 w)
+{
+	return __builtin_popcountll(w);
+}
+
+#include <asm-generic/bitops/lock.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/ext2-non-atomic.h>
+#include <asm-generic/bitops/minix.h>
+
+#endif /* _ASM_TILE_BITOPS_H */

arch/tile/include/asm/bitops_32.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_BITOPS_32_H
+#define _ASM_TILE_BITOPS_32_H
+
+#include <linux/compiler.h>
+#include <asm/atomic.h>
+#include <asm/system.h>
+
+/* Tile-specific routines to support <asm/bitops.h>. */
+unsigned long _atomic_or(volatile unsigned long *p, unsigned long mask);
+unsigned long _atomic_andn(volatile unsigned long *p, unsigned long mask);
+unsigned long _atomic_xor(volatile unsigned long *p, unsigned long mask);
+
+/**
+ * set_bit - Atomically set a bit in memory
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ *
+ * This function is atomic and may not be reordered.
+ * See __set_bit() if you do not require the atomic guarantees.
+ * Note that @nr may be almost arbitrarily large; this function is not
+ * restricted to acting on a single-word quantity.
+ */
+static inline void set_bit(unsigned nr, volatile unsigned long *addr)
+{
+	_atomic_or(addr + BIT_WORD(nr), BIT_MASK(nr));
+}
+
+/**
+ * clear_bit - Clears a bit in memory
+ * @nr: Bit to clear
+ * @addr: Address to start counting from
+ *
+ * clear_bit() is atomic and may not be reordered.
+ * See __clear_bit() if you do not require the atomic guarantees.
+ * Note that @nr may be almost arbitrarily large; this function is not
+ * restricted to acting on a single-word quantity.
+ *
+ * clear_bit() may not contain a memory barrier, so if it is used for
+ * locking purposes, you should call smp_mb__before_clear_bit() and/or
+ * smp_mb__after_clear_bit() to ensure changes are visible on other cpus.
+ */
+static inline void clear_bit(unsigned nr, volatile unsigned long *addr)
+{
+	_atomic_andn(addr + BIT_WORD(nr), BIT_MASK(nr));
+}
+
+/**
+ * change_bit - Toggle a bit in memory
+ * @nr: Bit to change
+ * @addr: Address to start counting from
+ *
+ * change_bit() is atomic and may not be reordered.
+ * See __change_bit() if you do not require the atomic guarantees.
+ * Note that @nr may be almost arbitrarily large; this function is not
+ * restricted to acting on a single-word quantity.
+ */
+static inline void change_bit(unsigned nr, volatile unsigned long *addr)
+{
+	_atomic_xor(addr + BIT_WORD(nr), BIT_MASK(nr));
+}
+
+/**
+ * test_and_set_bit - Set a bit and return its old value
+ * @nr: Bit to set
+ * @addr: Address to count from
+ *
+ * This operation is atomic and cannot be reordered.
+ * It also implies a memory barrier.
+ */
+static inline int test_and_set_bit(unsigned nr, volatile unsigned long *addr)
+{
+	unsigned long mask = BIT_MASK(nr);
+	addr += BIT_WORD(nr);
+	smp_mb();  /* barrier for proper semantics */
+	return (_atomic_or(addr, mask) & mask) != 0;
+}
+
+/**
+ * test_and_clear_bit - Clear a bit and return its old value
+ * @nr: Bit to clear
+ * @addr: Address to count from
+ *
+ * This operation is atomic and cannot be reordered.
+ * It also implies a memory barrier.
+ */
+static inline int test_and_clear_bit(unsigned nr, volatile unsigned long *addr)
+{
+	unsigned long mask = BIT_MASK(nr);
+	addr += BIT_WORD(nr);
+	smp_mb();  /* barrier for proper semantics */
+	return (_atomic_andn(addr, mask) & mask) != 0;
+}
+
+/**
+ * test_and_change_bit - Change a bit and return its old value
+ * @nr: Bit to change
+ * @addr: Address to count from
+ *
+ * This operation is atomic and cannot be reordered.
+ * It also implies a memory barrier.
+ */
+static inline int test_and_change_bit(unsigned nr,
+				      volatile unsigned long *addr)
+{
+	unsigned long mask = BIT_MASK(nr);
+	addr += BIT_WORD(nr);
+	smp_mb();  /* barrier for proper semantics */
+	return (_atomic_xor(addr, mask) & mask) != 0;
+}
+
+/* See discussion at smp_mb__before_atomic_dec() in <asm/atomic.h>. */
+#define smp_mb__before_clear_bit()	smp_mb()
+#define smp_mb__after_clear_bit()	do {} while (0)
+
+#include <asm-generic/bitops/non-atomic.h>
+#include <asm-generic/bitops/ext2-atomic.h>
+
+#endif /* _ASM_TILE_BITOPS_32_H */

arch/tile/include/asm/bitsperlong.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_BITSPERLONG_H
+#define _ASM_TILE_BITSPERLONG_H
+
+#ifdef __LP64__
+# define __BITS_PER_LONG 64
+#else
+# define __BITS_PER_LONG 32
+#endif
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* _ASM_TILE_BITSPERLONG_H */

arch/tile/include/asm/bug.h

+#include <asm-generic/bug.h>

arch/tile/include/asm/bugs.h

+#include <asm-generic/bugs.h>

arch/tile/include/asm/byteorder.h

+#include <linux/byteorder/little_endian.h>

arch/tile/include/asm/cache.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_CACHE_H
+#define _ASM_TILE_CACHE_H
+
+#include <arch/chip.h>
+
+/* bytes per L1 data cache line */
+#define L1_CACHE_SHIFT		CHIP_L1D_LOG_LINE_SIZE()
+#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+
+/* bytes per L2 cache line */
+#define L2_CACHE_SHIFT		CHIP_L2_LOG_LINE_SIZE()
+#define L2_CACHE_BYTES		(1 << L2_CACHE_SHIFT)
+#define L2_CACHE_ALIGN(x)	(((x)+(L2_CACHE_BYTES-1)) & -L2_CACHE_BYTES)
+
+/*
+ * TILE-Gx is fully coherents so we don't need to define
+ * ARCH_KMALLOC_MINALIGN.
+ */
+#ifndef __tilegx__
+#define ARCH_KMALLOC_MINALIGN	L2_CACHE_BYTES
+#endif
+
+/* use the cache line size for the L2, which is where it counts */
+#define SMP_CACHE_BYTES_SHIFT	L2_CACHE_SHIFT
+#define SMP_CACHE_BYTES		L2_CACHE_BYTES
+#define INTERNODE_CACHE_SHIFT   L2_CACHE_SHIFT
+#define INTERNODE_CACHE_BYTES   L2_CACHE_BYTES
+
+/* Group together read-mostly things to avoid cache false sharing */
+#define __read_mostly __attribute__((__section__(".data.read_mostly")))
+
+/*
+ * Attribute for data that is kept read/write coherent until the end of
+ * initialization, then bumped to read/only incoherent for performance.
+ */
+#define __write_once __attribute__((__section__(".w1data")))
+
+#endif /* _ASM_TILE_CACHE_H */

arch/tile/include/asm/cacheflush.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_CACHEFLUSH_H
+#define _ASM_TILE_CACHEFLUSH_H
+
+#include <arch/chip.h>
+
+/* Keep includes the same across arches.  */
+#include <linux/mm.h>
+#include <linux/cache.h>
+#include <asm/system.h>
+#include <arch/icache.h>
+
+/* Caches are physically-indexed and so don't need special treatment */
+#define flush_cache_all()			do { } while (0)
+#define flush_cache_mm(mm)			do { } while (0)
+#define flush_cache_dup_mm(mm)			do { } while (0)
+#define flush_cache_range(vma, start, end)	do { } while (0)
+#define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
+#define flush_dcache_page(page)			do { } while (0)
+#define flush_dcache_mmap_lock(mapping)		do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
+#define flush_cache_vmap(start, end)		do { } while (0)
+#define flush_cache_vunmap(start, end)		do { } while (0)
+#define flush_icache_page(vma, pg)		do { } while (0)
+#define flush_icache_user_range(vma, pg, adr, len)	do { } while (0)
+
+/* Flush the icache just on this cpu */
+extern void __flush_icache_range(unsigned long start, unsigned long end);
+
+/* Flush the entire icache on this cpu. */
+#define __flush_icache() __flush_icache_range(0, CHIP_L1I_CACHE_SIZE())
+
+#ifdef CONFIG_SMP
+/*
+ * When the kernel writes to its own text we need to do an SMP
+ * broadcast to make the L1I coherent everywhere.  This includes
+ * module load and single step.
+ */
+extern void flush_icache_range(unsigned long start, unsigned long end);
+#else
+#define flush_icache_range __flush_icache_range
+#endif
+
+/*
+ * An update to an executable user page requires icache flushing.
+ * We could carefully update only tiles that are running this process,
+ * and rely on the fact that we flush the icache on every context
+ * switch to avoid doing extra work here.  But for now, I'll be
+ * conservative and just do a global icache flush.
+ */
+static inline void copy_to_user_page(struct vm_area_struct *vma,
+				     struct page *page, unsigned long vaddr,
+				     void *dst, void *src, int len)
+{
+	memcpy(dst, src, len);
+	if (vma->vm_flags & VM_EXEC) {
+		flush_icache_range((unsigned long) dst,
+				   (unsigned long) dst + len);
+	}
+}
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy((dst), (src), (len))
+
+/*
+ * Invalidate a VA range; pads to L2 cacheline boundaries.
+ *
+ * Note that on TILE64, __inv_buffer() actually flushes modified
+ * cache lines in addition to invalidating them, i.e., it's the
+ * same as __finv_buffer().
+ */
+static inline void __inv_buffer(void *buffer, size_t size)
+{
+	char *next = (char *)((long)buffer & -L2_CACHE_BYTES);
+	char *finish = (char *)L2_CACHE_ALIGN((long)buffer + size);
+	while (next < finish) {
+		__insn_inv(next);
+		next += CHIP_INV_STRIDE();
+	}
+}
+
+/* Flush a VA range; pads to L2 cacheline boundaries. */
+static inline void __flush_buffer(void *buffer, size_t size)
+{
+	char *next = (char *)((long)buffer & -L2_CACHE_BYTES);
+	char *finish = (char *)L2_CACHE_ALIGN((long)buffer + size);
+	while (next < finish) {
+		__insn_flush(next);
+		next += CHIP_FLUSH_STRIDE();
+	}
+}
+
+/* Flush & invalidate a VA range; pads to L2 cacheline boundaries. */
+static inline void __finv_buffer(void *buffer, size_t size)
+{
+	char *next = (char *)((long)buffer & -L2_CACHE_BYTES);
+	char *finish = (char *)L2_CACHE_ALIGN((long)buffer + size);
+	while (next < finish) {
+		__insn_finv(next);
+		next += CHIP_FINV_STRIDE();
+	}
+}
+
+
+/* Invalidate a VA range, then memory fence. */
+static inline void inv_buffer(void *buffer, size_t size)
+{
+	__inv_buffer(buffer, size);
+	mb_incoherent();
+}
+
+/* Flush a VA range, then memory fence. */
+static inline void flush_buffer(void *buffer, size_t size)
+{
+	__flush_buffer(buffer, size);
+	mb_incoherent();
+}
+
+/* Flush & invalidate a VA range, then memory fence. */
+static inline void finv_buffer(void *buffer, size_t size)
+{
+	__finv_buffer(buffer, size);
+	mb_incoherent();
+}
+
+#endif /* _ASM_TILE_CACHEFLUSH_H */

arch/tile/include/asm/checksum.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_CHECKSUM_H
+#define _ASM_TILE_CHECKSUM_H
+
+#include <asm-generic/checksum.h>
+
+/* Allow us to provide a more optimized do_csum(). */
+__wsum do_csum(const unsigned char *buff, int len);
+#define do_csum do_csum
+
+#endif /* _ASM_TILE_CHECKSUM_H */

arch/tile/include/asm/cputime.h

+#include <asm-generic/cputime.h>

arch/tile/include/asm/current.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_CURRENT_H
+#define _ASM_TILE_CURRENT_H
+
+#include <linux/thread_info.h>
+
+struct task_struct;
+
+static inline struct task_struct *get_current(void)
+{
+	return current_thread_info()->task;
+}
+#define current get_current()
+
+/* Return a usable "task_struct" pointer even if the real one is corrupt. */
+struct task_struct *validate_current(void);
+
+#endif /* _ASM_TILE_CURRENT_H */

arch/tile/include/asm/delay.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_DELAY_H
+#define _ASM_TILE_DELAY_H
+
+/* Undefined functions to get compile-time errors. */
+extern void __bad_udelay(void);
+extern void __bad_ndelay(void);
+
+extern void __udelay(unsigned long usecs);
+extern void __ndelay(unsigned long nsecs);
+extern void __delay(unsigned long loops);
+
+#define udelay(n) (__builtin_constant_p(n) ? \
+	((n) > 20000 ? __bad_udelay() : __ndelay((n) * 1000)) : \
+	__udelay(n))
+
+#define ndelay(n) (__builtin_constant_p(n) ? \
+	((n) > 20000 ? __bad_ndelay() : __ndelay(n)) : \
+	__ndelay(n))
+
+#endif /* _ASM_TILE_DELAY_H */

arch/tile/include/asm/device.h

+#include <asm-generic/device.h>

arch/tile/include/asm/div64.h

+#include <asm-generic/div64.h>

arch/tile/include/asm/dma-mapping.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_DMA_MAPPING_H
+#define _ASM_TILE_DMA_MAPPING_H
+
+#include <linux/mm.h>
+#include <linux/scatterlist.h>
+#include <linux/cache.h>
+#include <linux/io.h>
+
+/*
+ * Note that on x86 and powerpc, there is a "struct dma_mapping_ops"
+ * that is used for all the DMA operations.  For now, we don't have an
+ * equivalent on tile, because we only have a single way of doing DMA.
+ * (Tilera bug 7994 to use dma_mapping_ops.)
+ */
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+
+extern dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
+			  enum dma_data_direction);
+extern void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
+			     size_t size, enum dma_data_direction);
+extern int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+	       enum dma_data_direction);
+extern void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
+			 int nhwentries, enum dma_data_direction);
+extern dma_addr_t dma_map_page(struct device *dev, struct page *page,
+			       unsigned long offset, size_t size,
+			       enum dma_data_direction);
+extern void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
+			   size_t size, enum dma_data_direction);
+extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
+				int nelems, enum dma_data_direction);
+extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
+				   int nelems, enum dma_data_direction);
+
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+			   dma_addr_t *dma_handle, gfp_t flag);
+
+void dma_free_coherent(struct device *dev, size_t size,
+			 void *vaddr, dma_addr_t dma_handle);
+
+extern void dma_sync_single_for_cpu(struct device *, dma_addr_t, size_t,
+				    enum dma_data_direction);
+extern void dma_sync_single_for_device(struct device *, dma_addr_t,
+				       size_t, enum dma_data_direction);
+extern void dma_sync_single_range_for_cpu(struct device *, dma_addr_t,
+					  unsigned long offset, size_t,
+					  enum dma_data_direction);
+extern void dma_sync_single_range_for_device(struct device *, dma_addr_t,
+					     unsigned long offset, size_t,
+					     enum dma_data_direction);
+extern void dma_cache_sync(void *vaddr, size_t, enum dma_data_direction);
+
+static inline int
+dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+	return 0;
+}
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+	return 1;
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 mask)
+{
+	if (!dev->dma_mask || !dma_supported(dev, mask))
+		return -EIO;
+
+	*dev->dma_mask = mask;
+
+	return 0;
+}
+
+static inline int
+dma_get_cache_alignment(void)
+{
+	return L2_CACHE_BYTES;
+}
+
+#define dma_is_consistent(d, h)	(1)
+
+
+#endif /* _ASM_TILE_DMA_MAPPING_H */

arch/tile/include/asm/dma.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_DMA_H
+#define _ASM_TILE_DMA_H
+
+#include <asm-generic/dma.h>
+
+/* Needed by drivers/pci/quirks.c */
+#ifdef CONFIG_PCI
+extern int isa_dma_bridge_buggy;
+#endif
+
+#endif /* _ASM_TILE_DMA_H */

arch/tile/include/asm/emergency-restart.h

+#include <asm-generic/emergency-restart.h>

arch/tile/include/asm/errno.h

+#include <asm-generic/errno.h>

arch/tile/include/asm/fcntl.h

+#include <asm-generic/fcntl.h>

arch/tile/include/asm/ftrace.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_FTRACE_H
+#define _ASM_TILE_FTRACE_H
+
+/* empty */
+
+#endif /* _ASM_TILE_FTRACE_H */

arch/tile/include/asm/hw_irq.h

+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful, but
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ *   NON INFRINGEMENT.  See the GNU General Public License for
+ *   more details.
+ */
+
+#ifndef _ASM_TILE_HW_IRQ_H
+#define _ASM_TILE_HW_IRQ_H
+
+#endif /* _ASM_TILE_HW_IRQ_H */

arch/tile/include/asm/ioctl.h

+#include <asm-generic/ioctl.h>

arch/tile/include/asm/ioctls.h

+#include <asm-generic/ioctls.h>

arch/tile/include/asm/ipc.h

+#include <asm-generic/ipc.h>

arch/tile/include/asm/ipcbuf.h

+#include <asm-generic/ipcbuf.h>

arch/tile/include/asm/irq_regs.h

+#include <asm-generic/irq_regs.h>

arch/tile/include/asm/kdebug.h

+#include <asm-generic/kdebug.h>

arch/tile/include/asm/local.h

+#include <asm-generic/local.h>

arch/tile/include/asm/module.h

+#include <asm-generic/module.h>

arch/tile/include/asm/msgbuf.h

+#include <asm-generic/msgbuf.h>

arch/tile/include/asm/mutex.h

+#include <asm-generic/mutex-dec.h>

arch/tile/include/asm/param.h

+#include <asm-generic/param.h>

arch/tile/include/asm/poll.h

+#include <asm-generic/poll.h>

arch/tile/include/asm/posix_types.h

+#include <asm-generic/posix_types.h>

arch/tile/include/asm/resource.h

+#include <asm-generic/resource.h>

arch/tile/include/asm/sembuf.h

+#include <asm-generic/sembuf.h>

arch/tile/include/asm/shmbuf.h

+#include <asm-generic/shmbuf.h>

arch/tile/include/asm/shmparam.h

+#include <asm-generic/shmparam.h>