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Diffstat (limited to 'include/asm-sh/processor.h')
| -rw-r--r-- | include/asm-sh/processor.h | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/include/asm-sh/processor.h b/include/asm-sh/processor.h deleted file mode 100644 index c4904797d6d..00000000000 --- a/include/asm-sh/processor.h +++ /dev/null @@ -1,275 +0,0 @@ -/* - * include/asm-sh/processor.h - * - * Copyright (C) 1999, 2000 Niibe Yutaka - * Copyright (C) 2002, 2003 Paul Mundt - */ - -#ifndef __ASM_SH_PROCESSOR_H -#define __ASM_SH_PROCESSOR_H -#ifdef __KERNEL__ - -#include <asm/page.h> -#include <asm/types.h> -#include <asm/cache.h> -#include <linux/threads.h> -#include <asm/ptrace.h> - -/* - * Default implementation of macro that returns current - * instruction pointer ("program counter"). - */ -#define current_text_addr() ({ void *pc; __asm__("mova 1f, %0\n1:":"=z" (pc)); pc; }) - -/* Core Processor Version Register */ -#define CCN_PVR 0xff000030 -#define CCN_CVR 0xff000040 -#define CCN_PRR 0xff000044 - -/* - * CPU type and hardware bug flags. Kept separately for each CPU. - * - * Each one of these also needs a CONFIG_CPU_SUBTYPE_xxx entry - * in arch/sh/Kconfig, as well as an entry in arch/sh/kernel/setup.c - * for parsing the subtype in get_cpu_subtype(). - */ -enum cpu_type { - /* SH-2 types */ - CPU_SH7604, - - /* SH-3 types */ - CPU_SH7705, CPU_SH7707, CPU_SH7708, CPU_SH7708S, CPU_SH7708R, - CPU_SH7709, CPU_SH7709A, CPU_SH7729, CPU_SH7300, - - /* SH-4 types */ - CPU_SH7750, CPU_SH7750S, CPU_SH7750R, CPU_SH7751, CPU_SH7751R, - CPU_SH7760, CPU_ST40RA, CPU_ST40GX1, CPU_SH4_202, CPU_SH4_501, - CPU_SH73180, - - /* Unknown subtype */ - CPU_SH_NONE -}; - -struct sh_cpuinfo { - enum cpu_type type; - char hard_math; - unsigned long loops_per_jiffy; - - unsigned int cpu_clock, master_clock, bus_clock, module_clock; -#ifdef CONFIG_CPU_SUBTYPE_ST40STB1 - unsigned int memory_clock; -#endif - - struct cache_info icache; - struct cache_info dcache; - - unsigned long flags; -}; - -extern struct sh_cpuinfo boot_cpu_data; - -#ifdef CONFIG_SMP -extern struct sh_cpuinfo cpu_data[]; -#define current_cpu_data cpu_data[smp_processor_id()] -#else -#define cpu_data (&boot_cpu_data) -#define current_cpu_data boot_cpu_data -#endif - -/* - * User space process size: 2GB. - * - * Since SH7709 and SH7750 have "area 7", we can't use 0x7c000000--0x7fffffff - */ -#define TASK_SIZE 0x7c000000UL - -/* 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 - */ -#define SR_FD 0x00008000 -#define SR_DSP 0x00001000 -#define SR_IMASK 0x000000f0 - -/* - * FPU structure and data - */ - -struct sh_fpu_hard_struct { - unsigned long fp_regs[16]; - unsigned long xfp_regs[16]; - unsigned long fpscr; - unsigned long fpul; - - long status; /* software status information */ -}; - -/* Dummy fpu emulator */ -struct sh_fpu_soft_struct { - unsigned long fp_regs[16]; - unsigned long xfp_regs[16]; - unsigned long fpscr; - unsigned long fpul; - - unsigned char lookahead; - unsigned long entry_pc; -}; - -union sh_fpu_union { - struct sh_fpu_hard_struct hard; - struct sh_fpu_soft_struct soft; -}; - -/* - * Processor flags - */ - -#define CPU_HAS_FPU 0x0001 /* Hardware FPU support */ -#define CPU_HAS_P2_FLUSH_BUG 0x0002 /* Need to flush the cache in P2 area */ -#define CPU_HAS_MMU_PAGE_ASSOC 0x0004 /* SH3: TLB way selection bit support */ -#define CPU_HAS_DSP 0x0008 /* SH-DSP: DSP support */ -#define CPU_HAS_PERF_COUNTER 0x0010 /* Hardware performance counters */ - -struct thread_struct { - unsigned long sp; - unsigned long pc; - - unsigned long trap_no, error_code; - unsigned long address; - /* Hardware debugging registers may come here */ - unsigned long ubc_pc; - - /* floating point info */ - union sh_fpu_union fpu; -}; - -/* Count of active tasks with UBC settings */ -extern int ubc_usercnt; - -#define INIT_THREAD { \ - sizeof(init_stack) + (long) &init_stack, /* sp */ \ - 0, /* pc */ \ - 0, 0, \ - 0, \ - 0, \ - {{{0,}},} /* fpu state */ \ -} - -/* - * Do necessary setup to start up a newly executed thread. - */ -#define start_thread(regs, new_pc, new_sp) \ - set_fs(USER_DS); \ - regs->pr = 0; \ - regs->sr = SR_FD; /* User mode. */ \ - regs->pc = new_pc; \ - 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 *); - -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - -/* - * 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) - -/* - * FPU lazy state save handling. - */ - -static __inline__ void disable_fpu(void) -{ - unsigned long __dummy; - - /* Set FD flag in SR */ - __asm__ __volatile__("stc sr, %0\n\t" - "or %1, %0\n\t" - "ldc %0, sr" - : "=&r" (__dummy) - : "r" (SR_FD)); -} - -static __inline__ void enable_fpu(void) -{ - unsigned long __dummy; - - /* Clear out FD flag in SR */ - __asm__ __volatile__("stc sr, %0\n\t" - "and %1, %0\n\t" - "ldc %0, sr" - : "=&r" (__dummy) - : "r" (~SR_FD)); -} - -static __inline__ void release_fpu(struct pt_regs *regs) -{ - regs->sr |= SR_FD; -} - -static __inline__ void grab_fpu(struct pt_regs *regs) -{ - regs->sr &= ~SR_FD; -} - -#ifdef CONFIG_CPU_SH4 -extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs); -#else -#define save_fpu(tsk) do { } while (0) -#endif - -#define unlazy_fpu(tsk, regs) do { \ - if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \ - save_fpu(tsk, regs); \ - } \ -} while (0) - -#define clear_fpu(tsk, regs) do { \ - if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) { \ - clear_tsk_thread_flag(tsk, TIF_USEDFPU); \ - release_fpu(regs); \ - } \ -} while (0) - -/* Double presision, NANS as NANS, rounding to nearest, no exceptions */ -#define FPSCR_INIT 0x00080000 - -#define FPSCR_CAUSE_MASK 0x0001f000 /* Cause bits */ -#define FPSCR_FLAG_MASK 0x0000007c /* Flag bits */ - -/* - * 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_sleep() __asm__ __volatile__ ("sleep" : : : "memory") -#define cpu_relax() do { } while (0) - -#endif /* __KERNEL__ */ -#endif /* __ASM_SH_PROCESSOR_H */ |