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@@ -1,261 +1,4 @@
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-/*
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- * Copyright 2010 Tilera Corporation. All Rights Reserved.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation, version 2.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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- * NON INFRINGEMENT. See the GNU General Public License for
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- * more details.
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- */
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-
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-#ifndef _ASM_TILE_SYSTEM_H
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-#define _ASM_TILE_SYSTEM_H
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-
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-#ifndef __ASSEMBLY__
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-
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-#include <linux/types.h>
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-#include <linux/irqflags.h>
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-
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-/* NOTE: we can't include <linux/ptrace.h> due to #include dependencies. */
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-#include <asm/ptrace.h>
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-
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-#include <arch/chip.h>
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-#include <arch/sim_def.h>
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-#include <arch/spr_def.h>
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-
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-/*
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- * read_barrier_depends - Flush all pending reads that subsequents reads
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- * depend on.
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- *
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- * No data-dependent reads from memory-like regions are ever reordered
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- * over this barrier. All reads preceding this primitive are guaranteed
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- * to access memory (but not necessarily other CPUs' caches) before any
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- * reads following this primitive that depend on the data return by
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- * any of the preceding reads. This primitive is much lighter weight than
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- * rmb() on most CPUs, and is never heavier weight than is
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- * rmb().
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- *
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- * These ordering constraints are respected by both the local CPU
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- * and the compiler.
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- *
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- * Ordering is not guaranteed by anything other than these primitives,
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- * not even by data dependencies. See the documentation for
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- * memory_barrier() for examples and URLs to more information.
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- *
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- * For example, the following code would force ordering (the initial
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- * value of "a" is zero, "b" is one, and "p" is "&a"):
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- *
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- * <programlisting>
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- * CPU 0 CPU 1
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- *
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- * b = 2;
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- * memory_barrier();
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- * p = &b; q = p;
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- * read_barrier_depends();
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- * d = *q;
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- * </programlisting>
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- *
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- * because the read of "*q" depends on the read of "p" and these
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- * two reads are separated by a read_barrier_depends(). However,
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- * the following code, with the same initial values for "a" and "b":
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- *
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- * <programlisting>
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- * CPU 0 CPU 1
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- *
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- * a = 2;
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- * memory_barrier();
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- * b = 3; y = b;
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- * read_barrier_depends();
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- * x = a;
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- * </programlisting>
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- *
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- * does not enforce ordering, since there is no data dependency between
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- * the read of "a" and the read of "b". Therefore, on some CPUs, such
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- * as Alpha, "y" could be set to 3 and "x" to 0. Use rmb()
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- * in cases like this where there are no data dependencies.
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- */
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-
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-#define read_barrier_depends() do { } while (0)
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-
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-#define __sync() __insn_mf()
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-
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-#if CHIP_HAS_SPLIT_CYCLE()
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-#define get_cycles_low() __insn_mfspr(SPR_CYCLE_LOW)
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-#else
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-#define get_cycles_low() __insn_mfspr(SPR_CYCLE) /* just get all 64 bits */
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-#endif
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-
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-#if !CHIP_HAS_MF_WAITS_FOR_VICTIMS()
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-#include <hv/syscall_public.h>
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-/*
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- * Issue an uncacheable load to each memory controller, then
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- * wait until those loads have completed.
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- */
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-static inline void __mb_incoherent(void)
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-{
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- long clobber_r10;
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- asm volatile("swint2"
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- : "=R10" (clobber_r10)
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- : "R10" (HV_SYS_fence_incoherent)
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- : "r0", "r1", "r2", "r3", "r4",
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- "r5", "r6", "r7", "r8", "r9",
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- "r11", "r12", "r13", "r14",
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- "r15", "r16", "r17", "r18", "r19",
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- "r20", "r21", "r22", "r23", "r24",
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- "r25", "r26", "r27", "r28", "r29");
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-}
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-#endif
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-
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-/* Fence to guarantee visibility of stores to incoherent memory. */
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-static inline void
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-mb_incoherent(void)
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-{
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- __insn_mf();
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-
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-#if !CHIP_HAS_MF_WAITS_FOR_VICTIMS()
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- {
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-#if CHIP_HAS_TILE_WRITE_PENDING()
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- const unsigned long WRITE_TIMEOUT_CYCLES = 400;
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- unsigned long start = get_cycles_low();
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- do {
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- if (__insn_mfspr(SPR_TILE_WRITE_PENDING) == 0)
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- return;
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- } while ((get_cycles_low() - start) < WRITE_TIMEOUT_CYCLES);
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-#endif /* CHIP_HAS_TILE_WRITE_PENDING() */
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- (void) __mb_incoherent();
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- }
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-#endif /* CHIP_HAS_MF_WAITS_FOR_VICTIMS() */
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-}
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-
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-#define fast_wmb() __sync()
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-#define fast_rmb() __sync()
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-#define fast_mb() __sync()
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-#define fast_iob() mb_incoherent()
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-
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-#define wmb() fast_wmb()
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-#define rmb() fast_rmb()
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-#define mb() fast_mb()
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-#define iob() fast_iob()
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-
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-#ifdef CONFIG_SMP
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-#define smp_mb() mb()
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-#define smp_rmb() rmb()
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-#define smp_wmb() wmb()
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-#define smp_read_barrier_depends() read_barrier_depends()
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-#else
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-#define smp_mb() barrier()
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-#define smp_rmb() barrier()
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-#define smp_wmb() barrier()
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-#define smp_read_barrier_depends() do { } while (0)
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-#endif
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-
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-#define set_mb(var, value) \
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- do { var = value; mb(); } while (0)
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-
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-/*
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- * Pause the DMA engine and static network before task switching.
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- */
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-#define prepare_arch_switch(next) _prepare_arch_switch(next)
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-void _prepare_arch_switch(struct task_struct *next);
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-
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-
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-/*
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- * switch_to(n) should switch tasks to task nr n, first
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- * checking that n isn't the current task, in which case it does nothing.
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- * The number of callee-saved registers saved on the kernel stack
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- * is defined here for use in copy_thread() and must agree with __switch_to().
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- */
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-#endif /* !__ASSEMBLY__ */
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-#define CALLEE_SAVED_FIRST_REG 30
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-#define CALLEE_SAVED_REGS_COUNT 24 /* r30 to r52, plus an empty to align */
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-#ifndef __ASSEMBLY__
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-struct task_struct;
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-#define switch_to(prev, next, last) ((last) = _switch_to((prev), (next)))
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-extern struct task_struct *_switch_to(struct task_struct *prev,
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- struct task_struct *next);
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-
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-/* Helper function for _switch_to(). */
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-extern struct task_struct *__switch_to(struct task_struct *prev,
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- struct task_struct *next,
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- unsigned long new_system_save_k_0);
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-
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-/* Address that switched-away from tasks are at. */
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-extern unsigned long get_switch_to_pc(void);
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-
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-/*
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- * On SMP systems, when the scheduler does migration-cost autodetection,
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- * it needs a way to flush as much of the CPU's caches as possible:
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- *
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- * TODO: fill this in!
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- */
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-static inline void sched_cacheflush(void)
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-{
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-}
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-
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-#define arch_align_stack(x) (x)
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-
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-/*
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- * Is the kernel doing fixups of unaligned accesses? If <0, no kernel
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- * intervention occurs and SIGBUS is delivered with no data address
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- * info. If 0, the kernel single-steps the instruction to discover
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- * the data address to provide with the SIGBUS. If 1, the kernel does
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- * a fixup.
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- */
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-extern int unaligned_fixup;
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-
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-/* Is the kernel printing on each unaligned fixup? */
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-extern int unaligned_printk;
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-
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-/* Number of unaligned fixups performed */
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-extern unsigned int unaligned_fixup_count;
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-
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-/* Init-time routine to do tile-specific per-cpu setup. */
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-void setup_cpu(int boot);
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-
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-/* User-level DMA management functions */
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-void grant_dma_mpls(void);
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-void restrict_dma_mpls(void);
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-
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-#ifdef CONFIG_HARDWALL
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-/* User-level network management functions */
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-void reset_network_state(void);
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-void grant_network_mpls(void);
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-void restrict_network_mpls(void);
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-int hardwall_deactivate(struct task_struct *task);
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-
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-/* Hook hardwall code into changes in affinity. */
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-#define arch_set_cpus_allowed(p, new_mask) do { \
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- if (p->thread.hardwall && !cpumask_equal(&p->cpus_allowed, new_mask)) \
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- hardwall_deactivate(p); \
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-} while (0)
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-#endif
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-
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-/*
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- * Kernel threads can check to see if they need to migrate their
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- * stack whenever they return from a context switch; for user
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- * threads, we defer until they are returning to user-space.
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- */
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-#define finish_arch_switch(prev) do { \
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- if (unlikely((prev)->state == TASK_DEAD)) \
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- __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_OS_EXIT | \
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- ((prev)->pid << _SIM_CONTROL_OPERATOR_BITS)); \
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- __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_OS_SWITCH | \
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- (current->pid << _SIM_CONTROL_OPERATOR_BITS)); \
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- if (current->mm == NULL && !kstack_hash && \
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- current_thread_info()->homecache_cpu != smp_processor_id()) \
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- homecache_migrate_kthread(); \
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-} while (0)
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-
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-/* Support function for forking a new task. */
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-void ret_from_fork(void);
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-
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-/* Called from ret_from_fork() when a new process starts up. */
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-struct task_struct *sim_notify_fork(struct task_struct *prev);
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-
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-#endif /* !__ASSEMBLY__ */
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-
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-#endif /* _ASM_TILE_SYSTEM_H */
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+/* FILE TO BE DELETED. DO NOT ADD STUFF HERE! */
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+#include <asm/barrier.h>
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+#include <asm/exec.h>
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+#include <asm/switch_to.h>
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