diff options
Diffstat (limited to 'include/asm-sh64')
| -rw-r--r-- | include/asm-sh64/processor.h | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/include/asm-sh64/processor.h b/include/asm-sh64/processor.h deleted file mode 100644 index eb2bee4b47b9..000000000000 --- a/include/asm-sh64/processor.h +++ /dev/null @@ -1,287 +0,0 @@ -#ifndef __ASM_SH64_PROCESSOR_H -#define __ASM_SH64_PROCESSOR_H - -/* - * 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. - * - * include/asm-sh64/processor.h - * - * Copyright (C) 2000, 2001 Paolo Alberelli - * Copyright (C) 2003 Paul Mundt - * Copyright (C) 2004 Richard Curnow - * - */ - -#include <asm/page.h> - -#ifndef __ASSEMBLY__ - -#include <asm/types.h> -#include <asm/cache.h> -#include <asm/registers.h> -#include <linux/threads.h> -#include <linux/compiler.h> - -/* - * Default implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ \ -void *pc; \ -unsigned long long __dummy = 0; \ -__asm__("gettr tr0, %1\n\t" \ - "pta 4, tr0\n\t" \ - "gettr tr0, %0\n\t" \ - "ptabs %1, tr0\n\t" \ - :"=r" (pc), "=r" (__dummy) \ - : "1" (__dummy)); \ -pc; }) - -/* - * CPU type and hardware bug flags. Kept separately for each CPU. - */ -enum cpu_type { - CPU_SH5_101, - CPU_SH5_103, - CPU_SH_NONE -}; - -/* - * TLB information structure - * - * Defined for both I and D tlb, per-processor. - */ -struct tlb_info { - unsigned long long next; - unsigned long long first; - unsigned long long last; - - unsigned int entries; - unsigned int step; - - unsigned long flags; -}; - -struct sh_cpuinfo { - enum cpu_type type; - unsigned long loops_per_jiffy; - - char hard_math; - - unsigned long *pgd_quick; - unsigned long *pmd_quick; - unsigned long *pte_quick; - unsigned long pgtable_cache_sz; - unsigned int cpu_clock, master_clock, bus_clock, module_clock; - - /* Cache info */ - struct cache_info icache; - struct cache_info dcache; - - /* TLB info */ - struct tlb_info itlb; - struct tlb_info dtlb; -}; - -extern struct sh_cpuinfo boot_cpu_data; - -#define cpu_data (&boot_cpu_data) -#define current_cpu_data boot_cpu_data - -#endif - -/* - * User space process size: 2GB - 4k. - */ -#define TASK_SIZE 0x7ffff000UL - -/* This decides where the kernel will search for a free chunk of vm - * space during mmap's. - */ -#define TASK_UNMAPPED_BASE (TASK_SIZE / 3) - -/* - * Bit of SR register - * - * FD-bit: - * When it's set, it means the processor doesn't have right to use FPU, - * and it results exception when the floating operation is executed. - * - * IMASK-bit: - * Interrupt level mask - * - * STEP-bit: - * Single step bit - * - */ -#define SR_FD 0x00008000 - -#if defined(CONFIG_SH64_SR_WATCH) -#define SR_MMU 0x84000000 -#else -#define SR_MMU 0x80000000 -#endif - -#define SR_IMASK 0x000000f0 -#define SR_SSTEP 0x08000000 - -#ifndef __ASSEMBLY__ - -/* - * FPU structure and data : require 8-byte alignment as we need to access it - with fld.p, fst.p - */ - -struct sh_fpu_hard_struct { - unsigned long fp_regs[64]; - unsigned int fpscr; - /* long status; * software status information */ -}; - -#if 0 -/* Dummy fpu emulator */ -struct sh_fpu_soft_struct { - unsigned long long fp_regs[32]; - unsigned int fpscr; - unsigned char lookahead; - unsigned long entry_pc; -}; -#endif - -union sh_fpu_union { - struct sh_fpu_hard_struct hard; - /* 'hard' itself only produces 32 bit alignment, yet we need - to access it using 64 bit load/store as well. */ - unsigned long long alignment_dummy; -}; - -struct thread_struct { - unsigned long sp; - unsigned long pc; - /* This stores the address of the pt_regs built during a context - switch, or of the register save area built for a kernel mode - exception. It is used for backtracing the stack of a sleeping task - or one that traps in kernel mode. */ - struct pt_regs *kregs; - /* This stores the address of the pt_regs constructed on entry from - user mode. It is a fixed value over the lifetime of a process, or - NULL for a kernel thread. */ - struct pt_regs *uregs; - - unsigned long trap_no, error_code; - unsigned long address; - /* Hardware debugging registers may come here */ - - /* floating point info */ - union sh_fpu_union fpu; -}; - -#define INIT_MMAP \ -{ &init_mm, 0, 0, NULL, PAGE_SHARED, VM_READ | VM_WRITE | VM_EXEC, 1, NULL, NULL } - -extern struct pt_regs fake_swapper_regs; - -#define INIT_THREAD { \ - .sp = sizeof(init_stack) + \ - (long) &init_stack, \ - .pc = 0, \ - .kregs = &fake_swapper_regs, \ - .uregs = NULL, \ - .trap_no = 0, \ - .error_code = 0, \ - .address = 0, \ - .fpu = { { { 0, } }, } \ -} - -/* - * Do necessary setup to start up a newly executed thread. - */ -#define SR_USER (SR_MMU | SR_FD) - -#define start_thread(regs, new_pc, new_sp) \ - set_fs(USER_DS); \ - regs->sr = SR_USER; /* User mode. */ \ - regs->pc = new_pc - 4; /* Compensate syscall exit */ \ - regs->pc |= 1; /* Set SHmedia ! */ \ - regs->regs[18] = 0; \ - regs->regs[15] = new_sp - -/* Forward declaration, a strange C thing */ -struct task_struct; -struct mm_struct; - -/* Free all resources held by a thread. */ -extern void release_thread(struct task_struct *); -/* - * create a kernel thread without removing it from tasklists - */ -extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); - - -/* Copy and release all segment info associated with a VM */ -#define copy_segments(p, mm) do { } while (0) -#define release_segments(mm) do { } while (0) -#define forget_segments() do { } while (0) -#define prepare_to_copy(tsk) do { } while (0) -/* - * FPU lazy state save handling. - */ - -static inline void release_fpu(void) -{ - unsigned long long __dummy; - - /* Set FD flag in SR */ - __asm__ __volatile__("getcon " __SR ", %0\n\t" - "or %0, %1, %0\n\t" - "putcon %0, " __SR "\n\t" - : "=&r" (__dummy) - : "r" (SR_FD)); -} - -static inline void grab_fpu(void) -{ - unsigned long long __dummy; - - /* Clear out FD flag in SR */ - __asm__ __volatile__("getcon " __SR ", %0\n\t" - "and %0, %1, %0\n\t" - "putcon %0, " __SR "\n\t" - : "=&r" (__dummy) - : "r" (~SR_FD)); -} - -/* Round to nearest, no exceptions on inexact, overflow, underflow, - zero-divide, invalid. Configure option for whether to flush denorms to - zero, or except if a denorm is encountered. */ -#if defined(CONFIG_SH64_FPU_DENORM_FLUSH) -#define FPSCR_INIT 0x00040000 -#else -#define FPSCR_INIT 0x00000000 -#endif - -/* Save the current FP regs */ -void fpsave(struct sh_fpu_hard_struct *fpregs); - -/* Initialise the FP state of a task */ -void fpinit(struct sh_fpu_hard_struct *fpregs); - -extern struct task_struct *last_task_used_math; - -/* - * Return saved PC of a blocked thread. - */ -#define thread_saved_pc(tsk) (tsk->thread.pc) - -extern unsigned long get_wchan(struct task_struct *p); - -#define KSTK_EIP(tsk) ((tsk)->thread.pc) -#define KSTK_ESP(tsk) ((tsk)->thread.sp) - -#define cpu_relax() barrier() - -#endif /* __ASSEMBLY__ */ -#endif /* __ASM_SH64_PROCESSOR_H */ - |
