9f04b9e327
This adds register definitions from the ppc64 processor.h to reg.h, and makes a single merged processor.h. I moved __is_processor from the ppc64 system.h to the merged reg.h along with the PVR register constants. Signed-off-by: Paul Mackerras <paulus@samba.org>
280 lines
8.1 KiB
C
280 lines
8.1 KiB
C
#ifndef _ASM_POWERPC_PROCESSOR_H
|
|
#define _ASM_POWERPC_PROCESSOR_H
|
|
|
|
/*
|
|
* Copyright (C) 2001 PPC 64 Team, IBM Corp
|
|
*
|
|
* 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; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/config.h>
|
|
#include <asm/reg.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/compiler.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/types.h>
|
|
#ifdef CONFIG_PPC64
|
|
#include <asm/systemcfg.h>
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC32
|
|
/* 32-bit platform types */
|
|
/* We only need to define a new _MACH_xxx for machines which are part of
|
|
* a configuration which supports more than one type of different machine.
|
|
* This is currently limited to CONFIG_PPC_MULTIPLATFORM and CHRP/PReP/PMac.
|
|
* -- Tom
|
|
*/
|
|
#define _MACH_prep 0x00000001
|
|
#define _MACH_Pmac 0x00000002 /* pmac or pmac clone (non-chrp) */
|
|
#define _MACH_chrp 0x00000004 /* chrp machine */
|
|
|
|
/* see residual.h for these */
|
|
#define _PREP_Motorola 0x01 /* motorola prep */
|
|
#define _PREP_Firm 0x02 /* firmworks prep */
|
|
#define _PREP_IBM 0x00 /* ibm prep */
|
|
#define _PREP_Bull 0x03 /* bull prep */
|
|
|
|
/* these are arbitrary */
|
|
#define _CHRP_Motorola 0x04 /* motorola chrp, the cobra */
|
|
#define _CHRP_IBM 0x05 /* IBM chrp, the longtrail and longtrail 2 */
|
|
#define _CHRP_Pegasos 0x06 /* Genesi/bplan's Pegasos and Pegasos2 */
|
|
|
|
#ifdef CONFIG_PPC_MULTIPLATFORM
|
|
extern int _machine;
|
|
|
|
/* what kind of prep workstation we are */
|
|
extern int _prep_type;
|
|
extern int _chrp_type;
|
|
|
|
/*
|
|
* This is used to identify the board type from a given PReP board
|
|
* vendor. Board revision is also made available.
|
|
*/
|
|
extern unsigned char ucSystemType;
|
|
extern unsigned char ucBoardRev;
|
|
extern unsigned char ucBoardRevMaj, ucBoardRevMin;
|
|
#else
|
|
#define _machine 0
|
|
#endif /* CONFIG_PPC_MULTIPLATFORM */
|
|
#endif /* CONFIG_PPC32 */
|
|
|
|
#ifdef CONFIG_PPC64
|
|
/* Platforms supported by PPC64 */
|
|
#define PLATFORM_PSERIES 0x0100
|
|
#define PLATFORM_PSERIES_LPAR 0x0101
|
|
#define PLATFORM_ISERIES_LPAR 0x0201
|
|
#define PLATFORM_LPAR 0x0001
|
|
#define PLATFORM_POWERMAC 0x0400
|
|
#define PLATFORM_MAPLE 0x0500
|
|
#define PLATFORM_BPA 0x1000
|
|
|
|
/* Compatibility with drivers coming from PPC32 world */
|
|
#define _machine (systemcfg->platform)
|
|
#define _MACH_Pmac PLATFORM_POWERMAC
|
|
#endif
|
|
|
|
/*
|
|
* Default implementation of macro that returns current
|
|
* instruction pointer ("program counter").
|
|
*/
|
|
#define current_text_addr() ({ __label__ _l; _l: &&_l;})
|
|
|
|
/* Macros for adjusting thread priority (hardware multi-threading) */
|
|
#define HMT_very_low() asm volatile("or 31,31,31 # very low priority")
|
|
#define HMT_low() asm volatile("or 1,1,1 # low priority")
|
|
#define HMT_medium_low() asm volatile("or 6,6,6 # medium low priority")
|
|
#define HMT_medium() asm volatile("or 2,2,2 # medium priority")
|
|
#define HMT_medium_high() asm volatile("or 5,5,5 # medium high priority")
|
|
#define HMT_high() asm volatile("or 3,3,3 # high priority")
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
extern int have_of;
|
|
|
|
struct task_struct;
|
|
void start_thread(struct pt_regs *regs, unsigned long fdptr, unsigned long sp);
|
|
void release_thread(struct task_struct *);
|
|
|
|
/* Prepare to copy thread state - unlazy all lazy status */
|
|
extern void prepare_to_copy(struct task_struct *tsk);
|
|
|
|
/* Create a new kernel thread. */
|
|
extern long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
|
|
|
|
/* Lazy FPU handling on uni-processor */
|
|
extern struct task_struct *last_task_used_math;
|
|
extern struct task_struct *last_task_used_altivec;
|
|
extern struct task_struct *last_task_used_spe;
|
|
|
|
#ifdef CONFIG_PPC32
|
|
#define TASK_SIZE (CONFIG_TASK_SIZE)
|
|
|
|
/* This decides where the kernel will search for a free chunk of vm
|
|
* space during mmap's.
|
|
*/
|
|
#define TASK_UNMAPPED_BASE (TASK_SIZE / 8 * 3)
|
|
#endif
|
|
|
|
#ifdef CONFIG_PPC64
|
|
/* 64-bit user address space is 44-bits (16TB user VM) */
|
|
#define TASK_SIZE_USER64 (0x0000100000000000UL)
|
|
|
|
/*
|
|
* 32-bit user address space is 4GB - 1 page
|
|
* (this 1 page is needed so referencing of 0xFFFFFFFF generates EFAULT
|
|
*/
|
|
#define TASK_SIZE_USER32 (0x0000000100000000UL - (1*PAGE_SIZE))
|
|
|
|
#define TASK_SIZE (test_thread_flag(TIF_32BIT) ? \
|
|
TASK_SIZE_USER32 : TASK_SIZE_USER64)
|
|
|
|
/* This decides where the kernel will search for a free chunk of vm
|
|
* space during mmap's.
|
|
*/
|
|
#define TASK_UNMAPPED_BASE_USER32 (PAGE_ALIGN(TASK_SIZE_USER32 / 4))
|
|
#define TASK_UNMAPPED_BASE_USER64 (PAGE_ALIGN(TASK_SIZE_USER64 / 4))
|
|
|
|
#define TASK_UNMAPPED_BASE ((test_thread_flag(TIF_32BIT)) ? \
|
|
TASK_UNMAPPED_BASE_USER32 : TASK_UNMAPPED_BASE_USER64 )
|
|
#endif
|
|
|
|
typedef struct {
|
|
unsigned long seg;
|
|
} mm_segment_t;
|
|
|
|
struct thread_struct {
|
|
unsigned long ksp; /* Kernel stack pointer */
|
|
#ifdef CONFIG_PPC64
|
|
unsigned long ksp_vsid;
|
|
#endif
|
|
struct pt_regs *regs; /* Pointer to saved register state */
|
|
mm_segment_t fs; /* for get_fs() validation */
|
|
#ifdef CONFIG_PPC32
|
|
void *pgdir; /* root of page-table tree */
|
|
signed long last_syscall;
|
|
#endif
|
|
#if defined(CONFIG_4xx) || defined (CONFIG_BOOKE)
|
|
unsigned long dbcr0; /* debug control register values */
|
|
unsigned long dbcr1;
|
|
#endif
|
|
double fpr[32]; /* Complete floating point set */
|
|
#ifdef CONFIG_PPC32
|
|
unsigned long fpscr_pad; /* fpr ... fpscr must be contiguous */
|
|
#endif
|
|
unsigned long fpscr; /* Floating point status */
|
|
int fpexc_mode; /* floating-point exception mode */
|
|
#ifdef CONFIG_PPC64
|
|
unsigned long start_tb; /* Start purr when proc switched in */
|
|
unsigned long accum_tb; /* Total accumilated purr for process */
|
|
unsigned long vdso_base; /* base of the vDSO library */
|
|
#endif
|
|
unsigned long dabr; /* Data address breakpoint register */
|
|
#ifdef CONFIG_ALTIVEC
|
|
/* Complete AltiVec register set */
|
|
vector128 vr[32] __attribute((aligned(16)));
|
|
/* AltiVec status */
|
|
vector128 vscr __attribute((aligned(16)));
|
|
unsigned long vrsave;
|
|
int used_vr; /* set if process has used altivec */
|
|
#endif /* CONFIG_ALTIVEC */
|
|
#ifdef CONFIG_SPE
|
|
unsigned long evr[32]; /* upper 32-bits of SPE regs */
|
|
u64 acc; /* Accumulator */
|
|
unsigned long spefscr; /* SPE & eFP status */
|
|
int used_spe; /* set if process has used spe */
|
|
#endif /* CONFIG_SPE */
|
|
};
|
|
|
|
#define ARCH_MIN_TASKALIGN 16
|
|
|
|
#define INIT_SP (sizeof(init_stack) + (unsigned long) &init_stack)
|
|
|
|
|
|
#ifdef CONFIG_PPC32
|
|
#define INIT_THREAD { \
|
|
.ksp = INIT_SP, \
|
|
.fs = KERNEL_DS, \
|
|
.pgdir = swapper_pg_dir, \
|
|
.fpexc_mode = MSR_FE0 | MSR_FE1, \
|
|
}
|
|
#else
|
|
#define INIT_THREAD { \
|
|
.ksp = INIT_SP, \
|
|
.regs = (struct pt_regs *)INIT_SP - 1, /* XXX bogus, I think */ \
|
|
.fs = KERNEL_DS, \
|
|
.fpr = {0}, \
|
|
.fpscr = 0, \
|
|
.fpexc_mode = MSR_FE0|MSR_FE1, \
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Return saved PC of a blocked thread. For now, this is the "user" PC
|
|
*/
|
|
#define thread_saved_pc(tsk) \
|
|
((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
|
|
|
|
unsigned long get_wchan(struct task_struct *p);
|
|
|
|
#define KSTK_EIP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->nip: 0)
|
|
#define KSTK_ESP(tsk) ((tsk)->thread.regs? (tsk)->thread.regs->gpr[1]: 0)
|
|
|
|
/* Get/set floating-point exception mode */
|
|
#define GET_FPEXC_CTL(tsk, adr) get_fpexc_mode((tsk), (adr))
|
|
#define SET_FPEXC_CTL(tsk, val) set_fpexc_mode((tsk), (val))
|
|
|
|
extern int get_fpexc_mode(struct task_struct *tsk, unsigned long adr);
|
|
extern int set_fpexc_mode(struct task_struct *tsk, unsigned int val);
|
|
|
|
static inline unsigned int __unpack_fe01(unsigned long msr_bits)
|
|
{
|
|
return ((msr_bits & MSR_FE0) >> 10) | ((msr_bits & MSR_FE1) >> 8);
|
|
}
|
|
|
|
static inline unsigned long __pack_fe01(unsigned int fpmode)
|
|
{
|
|
return ((fpmode << 10) & MSR_FE0) | ((fpmode << 8) & MSR_FE1);
|
|
}
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#define cpu_relax() do { HMT_low(); HMT_medium(); barrier(); } while (0)
|
|
#else
|
|
#define cpu_relax() barrier()
|
|
#endif
|
|
|
|
/*
|
|
* Prefetch macros.
|
|
*/
|
|
#define ARCH_HAS_PREFETCH
|
|
#define ARCH_HAS_PREFETCHW
|
|
#define ARCH_HAS_SPINLOCK_PREFETCH
|
|
|
|
static inline void prefetch(const void *x)
|
|
{
|
|
if (unlikely(!x))
|
|
return;
|
|
|
|
__asm__ __volatile__ ("dcbt 0,%0" : : "r" (x));
|
|
}
|
|
|
|
static inline void prefetchw(const void *x)
|
|
{
|
|
if (unlikely(!x))
|
|
return;
|
|
|
|
__asm__ __volatile__ ("dcbtst 0,%0" : : "r" (x));
|
|
}
|
|
|
|
#define spin_lock_prefetch(x) prefetchw(x)
|
|
|
|
#ifdef CONFIG_PPC64
|
|
#define HAVE_ARCH_PICK_MMAP_LAYOUT
|
|
#endif
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* __ASSEMBLY__ */
|
|
#endif /* _ASM_POWERPC_PROCESSOR_H */
|