diff options
Diffstat (limited to 'include/asm-sparc64/processor.h')
| -rw-r--r-- | include/asm-sparc64/processor.h | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/include/asm-sparc64/processor.h b/include/asm-sparc64/processor.h deleted file mode 100644 index 3169f3e2237..00000000000 --- a/include/asm-sparc64/processor.h +++ /dev/null @@ -1,230 +0,0 @@ -/* $Id: processor.h,v 1.83 2002/02/10 06:04:33 davem Exp $ - * include/asm-sparc64/processor.h - * - * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) - */ - -#ifndef __ASM_SPARC64_PROCESSOR_H -#define __ASM_SPARC64_PROCESSOR_H - -/* - * Sparc64 implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ void *pc; __asm__("rd %%pc, %0" : "=r" (pc)); pc; }) - -#include <linux/config.h> -#include <asm/asi.h> -#include <asm/a.out.h> -#include <asm/pstate.h> -#include <asm/ptrace.h> -#include <asm/page.h> - -/* The sparc has no problems with write protection */ -#define wp_works_ok 1 -#define wp_works_ok__is_a_macro /* for versions in ksyms.c */ - -/* - * User lives in his very own context, and cannot reference us. Note - * that TASK_SIZE is a misnomer, it really gives maximum user virtual - * address that the kernel will allocate out. - */ -#define VA_BITS 44 -#ifndef __ASSEMBLY__ -#define VPTE_SIZE (1UL << (VA_BITS - PAGE_SHIFT + 3)) -#else -#define VPTE_SIZE (1 << (VA_BITS - PAGE_SHIFT + 3)) -#endif -#define TASK_SIZE ((unsigned long)-VPTE_SIZE) - -/* - * The vpte base must be able to hold the entire vpte, half - * of which lives above, and half below, the base. And it - * is placed as close to the highest address range as possible. - */ -#define VPTE_BASE_SPITFIRE (-(VPTE_SIZE/2)) -#if 1 -#define VPTE_BASE_CHEETAH VPTE_BASE_SPITFIRE -#else -#define VPTE_BASE_CHEETAH 0xffe0000000000000 -#endif - -#ifndef __ASSEMBLY__ - -typedef struct { - unsigned char seg; -} mm_segment_t; - -/* The Sparc processor specific thread struct. */ -/* XXX This should die, everything can go into thread_info now. */ -struct thread_struct { -#ifdef CONFIG_DEBUG_SPINLOCK - /* How many spinlocks held by this thread. - * Used with spin lock debugging to catch tasks - * sleeping illegally with locks held. - */ - int smp_lock_count; - unsigned int smp_lock_pc; -#else - int dummy; /* f'in gcc bug... */ -#endif -}; - -#endif /* !(__ASSEMBLY__) */ - -#ifndef CONFIG_DEBUG_SPINLOCK -#define INIT_THREAD { \ - 0, \ -} -#else /* CONFIG_DEBUG_SPINLOCK */ -#define INIT_THREAD { \ -/* smp_lock_count, smp_lock_pc, */ \ - 0, 0, \ -} -#endif /* !(CONFIG_DEBUG_SPINLOCK) */ - -#ifndef __ASSEMBLY__ - -#include <linux/types.h> - -/* Return saved PC of a blocked thread. */ -struct task_struct; -extern unsigned long thread_saved_pc(struct task_struct *); - -/* On Uniprocessor, even in RMO processes see TSO semantics */ -#ifdef CONFIG_SMP -#define TSTATE_INITIAL_MM TSTATE_TSO -#else -#define TSTATE_INITIAL_MM TSTATE_RMO -#endif - -/* Do necessary setup to start up a newly executed thread. */ -#define start_thread(regs, pc, sp) \ -do { \ - regs->tstate = (regs->tstate & (TSTATE_CWP)) | (TSTATE_INITIAL_MM|TSTATE_IE) | (ASI_PNF << 24); \ - regs->tpc = ((pc & (~3)) - 4); \ - regs->tnpc = regs->tpc + 4; \ - regs->y = 0; \ - set_thread_wstate(1 << 3); \ - if (current_thread_info()->utraps) { \ - if (*(current_thread_info()->utraps) < 2) \ - kfree(current_thread_info()->utraps); \ - else \ - (*(current_thread_info()->utraps))--; \ - current_thread_info()->utraps = NULL; \ - } \ - __asm__ __volatile__( \ - "stx %%g0, [%0 + %2 + 0x00]\n\t" \ - "stx %%g0, [%0 + %2 + 0x08]\n\t" \ - "stx %%g0, [%0 + %2 + 0x10]\n\t" \ - "stx %%g0, [%0 + %2 + 0x18]\n\t" \ - "stx %%g0, [%0 + %2 + 0x20]\n\t" \ - "stx %%g0, [%0 + %2 + 0x28]\n\t" \ - "stx %%g0, [%0 + %2 + 0x30]\n\t" \ - "stx %%g0, [%0 + %2 + 0x38]\n\t" \ - "stx %%g0, [%0 + %2 + 0x40]\n\t" \ - "stx %%g0, [%0 + %2 + 0x48]\n\t" \ - "stx %%g0, [%0 + %2 + 0x50]\n\t" \ - "stx %%g0, [%0 + %2 + 0x58]\n\t" \ - "stx %%g0, [%0 + %2 + 0x60]\n\t" \ - "stx %%g0, [%0 + %2 + 0x68]\n\t" \ - "stx %1, [%0 + %2 + 0x70]\n\t" \ - "stx %%g0, [%0 + %2 + 0x78]\n\t" \ - "wrpr %%g0, (1 << 3), %%wstate\n\t" \ - : \ - : "r" (regs), "r" (sp - sizeof(struct reg_window) - STACK_BIAS), \ - "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \ -} while (0) - -#define start_thread32(regs, pc, sp) \ -do { \ - pc &= 0x00000000ffffffffUL; \ - sp &= 0x00000000ffffffffUL; \ -\ - regs->tstate = (regs->tstate & (TSTATE_CWP))|(TSTATE_INITIAL_MM|TSTATE_IE|TSTATE_AM); \ - regs->tpc = ((pc & (~3)) - 4); \ - regs->tnpc = regs->tpc + 4; \ - regs->y = 0; \ - set_thread_wstate(2 << 3); \ - if (current_thread_info()->utraps) { \ - if (*(current_thread_info()->utraps) < 2) \ - kfree(current_thread_info()->utraps); \ - else \ - (*(current_thread_info()->utraps))--; \ - current_thread_info()->utraps = NULL; \ - } \ - __asm__ __volatile__( \ - "stx %%g0, [%0 + %2 + 0x00]\n\t" \ - "stx %%g0, [%0 + %2 + 0x08]\n\t" \ - "stx %%g0, [%0 + %2 + 0x10]\n\t" \ - "stx %%g0, [%0 + %2 + 0x18]\n\t" \ - "stx %%g0, [%0 + %2 + 0x20]\n\t" \ - "stx %%g0, [%0 + %2 + 0x28]\n\t" \ - "stx %%g0, [%0 + %2 + 0x30]\n\t" \ - "stx %%g0, [%0 + %2 + 0x38]\n\t" \ - "stx %%g0, [%0 + %2 + 0x40]\n\t" \ - "stx %%g0, [%0 + %2 + 0x48]\n\t" \ - "stx %%g0, [%0 + %2 + 0x50]\n\t" \ - "stx %%g0, [%0 + %2 + 0x58]\n\t" \ - "stx %%g0, [%0 + %2 + 0x60]\n\t" \ - "stx %%g0, [%0 + %2 + 0x68]\n\t" \ - "stx %1, [%0 + %2 + 0x70]\n\t" \ - "stx %%g0, [%0 + %2 + 0x78]\n\t" \ - "wrpr %%g0, (2 << 3), %%wstate\n\t" \ - : \ - : "r" (regs), "r" (sp - sizeof(struct reg_window32)), \ - "i" ((const unsigned long)(&((struct pt_regs *)0)->u_regs[0]))); \ -} while (0) - -/* Free all resources held by a thread. */ -#define release_thread(tsk) do { } while (0) - -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - -extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - -extern unsigned long get_wchan(struct task_struct *task); - -#define KSTK_EIP(tsk) ((tsk)->thread_info->kregs->tpc) -#define KSTK_ESP(tsk) ((tsk)->thread_info->kregs->u_regs[UREG_FP]) - -#define cpu_relax() barrier() - -/* Prefetch support. This is tuned for UltraSPARC-III and later. - * UltraSPARC-I will treat these as nops, and UltraSPARC-II has - * a shallower prefetch queue than later chips. - */ -#define ARCH_HAS_PREFETCH -#define ARCH_HAS_PREFETCHW -#define ARCH_HAS_SPINLOCK_PREFETCH - -static inline void prefetch(const void *x) -{ - /* We do not use the read prefetch mnemonic because that - * prefetches into the prefetch-cache which only is accessible - * by floating point operations in UltraSPARC-III and later. - * By contrast, "#one_write" prefetches into the L2 cache - * in shared state. - */ - __asm__ __volatile__("prefetch [%0], #one_write" - : /* no outputs */ - : "r" (x)); -} - -static inline void prefetchw(const void *x) -{ - /* The most optimal prefetch to use for writes is - * "#n_writes". This brings the cacheline into the - * L2 cache in "owned" state. - */ - __asm__ __volatile__("prefetch [%0], #n_writes" - : /* no outputs */ - : "r" (x)); -} - -#define spin_lock_prefetch(x) prefetchw(x) - -#endif /* !(__ASSEMBLY__) */ - -#endif /* !(__ASM_SPARC64_PROCESSOR_H) */ |
