powerpc: Merged processor.h.
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>
diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h
new file mode 100644
index 0000000..9592f53
--- /dev/null
+++ b/include/asm-powerpc/processor.h
@@ -0,0 +1,280 @@
+#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 */