diff options
Diffstat (limited to 'arch/tile')
25 files changed, 161 insertions, 129 deletions
diff --git a/arch/tile/include/asm/atomic.h b/arch/tile/include/asm/atomic.h index 921dbeb..bb696da 100644 --- a/arch/tile/include/asm/atomic.h +++ b/arch/tile/include/asm/atomic.h @@ -20,7 +20,7 @@ #ifndef __ASSEMBLY__ #include <linux/compiler.h> -#include <asm/system.h> +#include <linux/types.h> #define ATOMIC_INIT(i) { (i) } diff --git a/arch/tile/include/asm/atomic_32.h b/arch/tile/include/asm/atomic_32.h index c03349e0..466dc4a 100644 --- a/arch/tile/include/asm/atomic_32.h +++ b/arch/tile/include/asm/atomic_32.h @@ -17,6 +17,7 @@ #ifndef _ASM_TILE_ATOMIC_32_H #define _ASM_TILE_ATOMIC_32_H +#include <asm/barrier.h> #include <arch/chip.h> #ifndef __ASSEMBLY__ diff --git a/arch/tile/include/asm/atomic_64.h b/arch/tile/include/asm/atomic_64.h index 27fe667..f4500c6 100644 --- a/arch/tile/include/asm/atomic_64.h +++ b/arch/tile/include/asm/atomic_64.h @@ -19,6 +19,7 @@ #ifndef __ASSEMBLY__ +#include <asm/barrier.h> #include <arch/spr_def.h> /* First, the 32-bit atomic ops that are "real" on our 64-bit platform. */ diff --git a/arch/tile/include/asm/system.h b/arch/tile/include/asm/barrier.h index 23d1842..990a217 100644 --- a/arch/tile/include/asm/system.h +++ b/arch/tile/include/asm/barrier.h @@ -12,20 +12,15 @@ * more details. */ -#ifndef _ASM_TILE_SYSTEM_H -#define _ASM_TILE_SYSTEM_H +#ifndef _ASM_TILE_BARRIER_H +#define _ASM_TILE_BARRIER_H #ifndef __ASSEMBLY__ #include <linux/types.h> -#include <linux/irqflags.h> - -/* NOTE: we can't include <linux/ptrace.h> due to #include dependencies. */ -#include <asm/ptrace.h> - #include <arch/chip.h> -#include <arch/sim_def.h> #include <arch/spr_def.h> +#include <asm/timex.h> /* * read_barrier_depends - Flush all pending reads that subsequents reads @@ -78,17 +73,10 @@ * as Alpha, "y" could be set to 3 and "x" to 0. Use rmb() * in cases like this where there are no data dependencies. */ - #define read_barrier_depends() do { } while (0) #define __sync() __insn_mf() -#if CHIP_HAS_SPLIT_CYCLE() -#define get_cycles_low() __insn_mfspr(SPR_CYCLE_LOW) -#else -#define get_cycles_low() __insn_mfspr(SPR_CYCLE) /* just get all 64 bits */ -#endif - #if !CHIP_HAS_MF_WAITS_FOR_VICTIMS() #include <hv/syscall_public.h> /* @@ -156,106 +144,5 @@ mb_incoherent(void) #define set_mb(var, value) \ do { var = value; mb(); } while (0) -/* - * Pause the DMA engine and static network before task switching. - */ -#define prepare_arch_switch(next) _prepare_arch_switch(next) -void _prepare_arch_switch(struct task_struct *next); - - -/* - * switch_to(n) should switch tasks to task nr n, first - * checking that n isn't the current task, in which case it does nothing. - * The number of callee-saved registers saved on the kernel stack - * is defined here for use in copy_thread() and must agree with __switch_to(). - */ -#endif /* !__ASSEMBLY__ */ -#define CALLEE_SAVED_FIRST_REG 30 -#define CALLEE_SAVED_REGS_COUNT 24 /* r30 to r52, plus an empty to align */ -#ifndef __ASSEMBLY__ -struct task_struct; -#define switch_to(prev, next, last) ((last) = _switch_to((prev), (next))) -extern struct task_struct *_switch_to(struct task_struct *prev, - struct task_struct *next); - -/* Helper function for _switch_to(). */ -extern struct task_struct *__switch_to(struct task_struct *prev, - struct task_struct *next, - unsigned long new_system_save_k_0); - -/* Address that switched-away from tasks are at. */ -extern unsigned long get_switch_to_pc(void); - -/* - * On SMP systems, when the scheduler does migration-cost autodetection, - * it needs a way to flush as much of the CPU's caches as possible: - * - * TODO: fill this in! - */ -static inline void sched_cacheflush(void) -{ -} - -#define arch_align_stack(x) (x) - -/* - * Is the kernel doing fixups of unaligned accesses? If <0, no kernel - * intervention occurs and SIGBUS is delivered with no data address - * info. If 0, the kernel single-steps the instruction to discover - * the data address to provide with the SIGBUS. If 1, the kernel does - * a fixup. - */ -extern int unaligned_fixup; - -/* Is the kernel printing on each unaligned fixup? */ -extern int unaligned_printk; - -/* Number of unaligned fixups performed */ -extern unsigned int unaligned_fixup_count; - -/* Init-time routine to do tile-specific per-cpu setup. */ -void setup_cpu(int boot); - -/* User-level DMA management functions */ -void grant_dma_mpls(void); -void restrict_dma_mpls(void); - -#ifdef CONFIG_HARDWALL -/* User-level network management functions */ -void reset_network_state(void); -void grant_network_mpls(void); -void restrict_network_mpls(void); -int hardwall_deactivate(struct task_struct *task); - -/* Hook hardwall code into changes in affinity. */ -#define arch_set_cpus_allowed(p, new_mask) do { \ - if (p->thread.hardwall && !cpumask_equal(&p->cpus_allowed, new_mask)) \ - hardwall_deactivate(p); \ -} while (0) -#endif - -/* - * Kernel threads can check to see if they need to migrate their - * stack whenever they return from a context switch; for user - * threads, we defer until they are returning to user-space. - */ -#define finish_arch_switch(prev) do { \ - if (unlikely((prev)->state == TASK_DEAD)) \ - __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_OS_EXIT | \ - ((prev)->pid << _SIM_CONTROL_OPERATOR_BITS)); \ - __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_OS_SWITCH | \ - (current->pid << _SIM_CONTROL_OPERATOR_BITS)); \ - if (current->mm == NULL && !kstack_hash && \ - current_thread_info()->homecache_cpu != smp_processor_id()) \ - homecache_migrate_kthread(); \ -} while (0) - -/* Support function for forking a new task. */ -void ret_from_fork(void); - -/* Called from ret_from_fork() when a new process starts up. */ -struct task_struct *sim_notify_fork(struct task_struct *prev); - #endif /* !__ASSEMBLY__ */ - -#endif /* _ASM_TILE_SYSTEM_H */ +#endif /* _ASM_TILE_BARRIER_H */ diff --git a/arch/tile/include/asm/bitops_32.h b/arch/tile/include/asm/bitops_32.h index 571b118..ddc4c1e 100644 --- a/arch/tile/include/asm/bitops_32.h +++ b/arch/tile/include/asm/bitops_32.h @@ -17,7 +17,6 @@ #include <linux/compiler.h> #include <linux/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); diff --git a/arch/tile/include/asm/bitops_64.h b/arch/tile/include/asm/bitops_64.h index e9c8e38..58d021a 100644 --- a/arch/tile/include/asm/bitops_64.h +++ b/arch/tile/include/asm/bitops_64.h @@ -17,7 +17,6 @@ #include <linux/compiler.h> #include <linux/atomic.h> -#include <asm/system.h> /* See <asm/bitops.h> for API comments. */ diff --git a/arch/tile/include/asm/cacheflush.h b/arch/tile/include/asm/cacheflush.h index e925f4b..0fc63c4 100644 --- a/arch/tile/include/asm/cacheflush.h +++ b/arch/tile/include/asm/cacheflush.h @@ -20,7 +20,6 @@ /* 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 */ @@ -152,4 +151,14 @@ static inline void finv_buffer_local(void *buffer, size_t size) */ void finv_buffer_remote(void *buffer, size_t size, int hfh); +/* + * On SMP systems, when the scheduler does migration-cost autodetection, + * it needs a way to flush as much of the CPU's caches as possible: + * + * TODO: fill this in! + */ +static inline void sched_cacheflush(void) +{ +} + #endif /* _ASM_TILE_CACHEFLUSH_H */ diff --git a/arch/tile/include/asm/exec.h b/arch/tile/include/asm/exec.h new file mode 100644 index 0000000..a714e19 --- /dev/null +++ b/arch/tile/include/asm/exec.h @@ -0,0 +1,20 @@ +/* + * 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_EXEC_H +#define _ASM_TILE_EXEC_H + +#define arch_align_stack(x) (x) + +#endif /* _ASM_TILE_EXEC_H */ diff --git a/arch/tile/include/asm/pgtable.h b/arch/tile/include/asm/pgtable.h index 1a20b7e..6749091 100644 --- a/arch/tile/include/asm/pgtable.h +++ b/arch/tile/include/asm/pgtable.h @@ -29,7 +29,6 @@ #include <linux/spinlock.h> #include <asm/processor.h> #include <asm/fixmap.h> -#include <asm/system.h> struct mm_struct; struct vm_area_struct; diff --git a/arch/tile/include/asm/setup.h b/arch/tile/include/asm/setup.h index 7caf0f3..e58613e 100644 --- a/arch/tile/include/asm/setup.h +++ b/arch/tile/include/asm/setup.h @@ -31,6 +31,28 @@ void early_panic(const char *fmt, ...); void warn_early_printk(void); void __init disable_early_printk(void); +/* Init-time routine to do tile-specific per-cpu setup. */ +void setup_cpu(int boot); + +/* User-level DMA management functions */ +void grant_dma_mpls(void); +void restrict_dma_mpls(void); + +#ifdef CONFIG_HARDWALL +/* User-level network management functions */ +void reset_network_state(void); +void grant_network_mpls(void); +void restrict_network_mpls(void); +struct task_struct; +int hardwall_deactivate(struct task_struct *task); + +/* Hook hardwall code into changes in affinity. */ +#define arch_set_cpus_allowed(p, new_mask) do { \ + if (p->thread.hardwall && !cpumask_equal(&p->cpus_allowed, new_mask)) \ + hardwall_deactivate(p); \ +} while (0) +#endif + #endif /* __KERNEL__ */ #endif /* _ASM_TILE_SETUP_H */ diff --git a/arch/tile/include/asm/spinlock_32.h b/arch/tile/include/asm/spinlock_32.h index a5e4208..c0a77b3 100644 --- a/arch/tile/include/asm/spinlock_32.h +++ b/arch/tile/include/asm/spinlock_32.h @@ -19,7 +19,6 @@ #include <linux/atomic.h> #include <asm/page.h> -#include <asm/system.h> #include <linux/compiler.h> /* diff --git a/arch/tile/include/asm/switch_to.h b/arch/tile/include/asm/switch_to.h new file mode 100644 index 0000000..1d48c5f --- /dev/null +++ b/arch/tile/include/asm/switch_to.h @@ -0,0 +1,76 @@ +/* + * 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_SWITCH_TO_H +#define _ASM_TILE_SWITCH_TO_H + +#include <arch/sim_def.h> + +/* + * switch_to(n) should switch tasks to task nr n, first + * checking that n isn't the current task, in which case it does nothing. + * The number of callee-saved registers saved on the kernel stack + * is defined here for use in copy_thread() and must agree with __switch_to(). + */ +#define CALLEE_SAVED_FIRST_REG 30 +#define CALLEE_SAVED_REGS_COUNT 24 /* r30 to r52, plus an empty to align */ + +#ifndef __ASSEMBLY__ + +struct task_struct; + +/* + * Pause the DMA engine and static network before task switching. + */ +#define prepare_arch_switch(next) _prepare_arch_switch(next) +void _prepare_arch_switch(struct task_struct *next); + +struct task_struct; +#define switch_to(prev, next, last) ((last) = _switch_to((prev), (next))) +extern struct task_struct *_switch_to(struct task_struct *prev, + struct task_struct *next); + +/* Helper function for _switch_to(). */ +extern struct task_struct *__switch_to(struct task_struct *prev, + struct task_struct *next, + unsigned long new_system_save_k_0); + +/* Address that switched-away from tasks are at. */ +extern unsigned long get_switch_to_pc(void); + +/* + * Kernel threads can check to see if they need to migrate their + * stack whenever they return from a context switch; for user + * threads, we defer until they are returning to user-space. + */ +#define finish_arch_switch(prev) do { \ + if (unlikely((prev)->state == TASK_DEAD)) \ + __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_OS_EXIT | \ + ((prev)->pid << _SIM_CONTROL_OPERATOR_BITS)); \ + __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_OS_SWITCH | \ + (current->pid << _SIM_CONTROL_OPERATOR_BITS)); \ + if (current->mm == NULL && !kstack_hash && \ + current_thread_info()->homecache_cpu != smp_processor_id()) \ + homecache_migrate_kthread(); \ +} while (0) + +/* Support function for forking a new task. */ +void ret_from_fork(void); + +/* Called from ret_from_fork() when a new process starts up. */ +struct task_struct *sim_notify_fork(struct task_struct *prev); + +#endif /* !__ASSEMBLY__ */ + +#endif /* _ASM_TILE_SWITCH_TO_H */ diff --git a/arch/tile/include/asm/timex.h b/arch/tile/include/asm/timex.h index 29921f0..dc987d5 100644 --- a/arch/tile/include/asm/timex.h +++ b/arch/tile/include/asm/timex.h @@ -29,11 +29,13 @@ typedef unsigned long long cycles_t; #if CHIP_HAS_SPLIT_CYCLE() cycles_t get_cycles(void); +#define get_cycles_low() __insn_mfspr(SPR_CYCLE_LOW) #else static inline cycles_t get_cycles(void) { return __insn_mfspr(SPR_CYCLE); } +#define get_cycles_low() __insn_mfspr(SPR_CYCLE) /* just get all 64 bits */ #endif cycles_t get_clock_rate(void); diff --git a/arch/tile/include/asm/unaligned.h b/arch/tile/include/asm/unaligned.h index 137e2de..37dfbe5 100644 --- a/arch/tile/include/asm/unaligned.h +++ b/arch/tile/include/asm/unaligned.h @@ -21,4 +21,19 @@ #define get_unaligned __get_unaligned_le #define put_unaligned __put_unaligned_le +/* + * Is the kernel doing fixups of unaligned accesses? If <0, no kernel + * intervention occurs and SIGBUS is delivered with no data address + * info. If 0, the kernel single-steps the instruction to discover + * the data address to provide with the SIGBUS. If 1, the kernel does + * a fixup. + */ +extern int unaligned_fixup; + +/* Is the kernel printing on each unaligned fixup? */ +extern int unaligned_printk; + +/* Number of unaligned fixups performed */ +extern unsigned int unaligned_fixup_count; + #endif /* _ASM_TILE_UNALIGNED_H */ diff --git a/arch/tile/kernel/early_printk.c b/arch/tile/kernel/early_printk.c index 493a0e6..afb9c9a 100644 --- a/arch/tile/kernel/early_printk.c +++ b/arch/tile/kernel/early_printk.c @@ -16,6 +16,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/string.h> +#include <linux/irqflags.h> #include <asm/setup.h> #include <hv/hypervisor.h> diff --git a/arch/tile/kernel/proc.c b/arch/tile/kernel/proc.c index 62d8208..7a93270 100644 --- a/arch/tile/kernel/proc.c +++ b/arch/tile/kernel/proc.c @@ -23,6 +23,7 @@ #include <linux/sysctl.h> #include <linux/hardirq.h> #include <linux/mman.h> +#include <asm/unaligned.h> #include <asm/pgtable.h> #include <asm/processor.h> #include <asm/sections.h> diff --git a/arch/tile/kernel/process.c b/arch/tile/kernel/process.c index 6ae495e..30caeca 100644 --- a/arch/tile/kernel/process.c +++ b/arch/tile/kernel/process.c @@ -27,16 +27,17 @@ #include <linux/kernel.h> #include <linux/tracehook.h> #include <linux/signal.h> -#include <asm/system.h> #include <asm/stack.h> #include <asm/homecache.h> #include <asm/syscalls.h> #include <asm/traps.h> +#include <asm/setup.h> #ifdef CONFIG_HARDWALL #include <asm/hardwall.h> #endif #include <arch/chip.h> #include <arch/abi.h> +#include <arch/sim_def.h> /* diff --git a/arch/tile/kernel/regs_32.S b/arch/tile/kernel/regs_32.S index caa1310..c12280c 100644 --- a/arch/tile/kernel/regs_32.S +++ b/arch/tile/kernel/regs_32.S @@ -13,11 +13,11 @@ */ #include <linux/linkage.h> -#include <asm/system.h> #include <asm/ptrace.h> #include <asm/asm-offsets.h> #include <arch/spr_def.h> #include <asm/processor.h> +#include <asm/switch_to.h> /* * See <asm/system.h>; called with prev and next task_struct pointers. diff --git a/arch/tile/kernel/regs_64.S b/arch/tile/kernel/regs_64.S index f748c1e..0829fd0 100644 --- a/arch/tile/kernel/regs_64.S +++ b/arch/tile/kernel/regs_64.S @@ -13,11 +13,11 @@ */ #include <linux/linkage.h> -#include <asm/system.h> #include <asm/ptrace.h> #include <asm/asm-offsets.h> #include <arch/spr_def.h> #include <asm/processor.h> +#include <asm/switch_to.h> /* * See <asm/system.h>; called with prev and next task_struct pointers. diff --git a/arch/tile/kernel/single_step.c b/arch/tile/kernel/single_step.c index b7a8795..bc1eb58 100644 --- a/arch/tile/kernel/single_step.c +++ b/arch/tile/kernel/single_step.c @@ -25,6 +25,7 @@ #include <linux/types.h> #include <linux/err.h> #include <asm/cacheflush.h> +#include <asm/unaligned.h> #include <arch/abi.h> #include <arch/opcode.h> diff --git a/arch/tile/kernel/traps.c b/arch/tile/kernel/traps.c index 4f47b8a..2bb6602 100644 --- a/arch/tile/kernel/traps.c +++ b/arch/tile/kernel/traps.c @@ -21,6 +21,7 @@ #include <linux/ptrace.h> #include <asm/stack.h> #include <asm/traps.h> +#include <asm/setup.h> #include <arch/interrupts.h> #include <arch/spr_def.h> diff --git a/arch/tile/mm/elf.c b/arch/tile/mm/elf.c index 1a00fb6..758b603 100644 --- a/arch/tile/mm/elf.c +++ b/arch/tile/mm/elf.c @@ -21,6 +21,7 @@ #include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/sections.h> +#include <arch/sim_def.h> /* Notify a running simulator, if any, that an exec just occurred. */ static void sim_notify_exec(const char *binary_name) diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c index c1eaaa1..cba30e9 100644 --- a/arch/tile/mm/fault.c +++ b/arch/tile/mm/fault.c @@ -35,7 +35,6 @@ #include <linux/syscalls.h> #include <linux/uaccess.h> -#include <asm/system.h> #include <asm/pgalloc.h> #include <asm/sections.h> #include <asm/traps.h> diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c index 7309988c..830c490 100644 --- a/arch/tile/mm/init.c +++ b/arch/tile/mm/init.c @@ -38,7 +38,6 @@ #include <linux/uaccess.h> #include <asm/mmu_context.h> #include <asm/processor.h> -#include <asm/system.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/dma.h> diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c index de7d8e2..8730369 100644 --- a/arch/tile/mm/pgtable.c +++ b/arch/tile/mm/pgtable.c @@ -27,7 +27,6 @@ #include <linux/vmalloc.h> #include <linux/smp.h> -#include <asm/system.h> #include <asm/pgtable.h> #include <asm/pgalloc.h> #include <asm/fixmap.h> |
