FreeBSD/Linux Kernel Cross Reference
sys/powerpc/include/cpu.h

     /*-
      * SPDX-License-Identifier: BSD-4-Clause
      *
      * Copyright (C) 1995-1997 Wolfgang Solfrank.
      * Copyright (C) 1995-1997 TooLs GmbH.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by TooLs GmbH.
     * 4. The name of TooLs GmbH may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     *      $NetBSD: cpu.h,v 1.11 2000/05/26 21:19:53 thorpej Exp $
     * $FreeBSD$
     */
    
    #ifndef _MACHINE_CPU_H_
    #define _MACHINE_CPU_H_
    
    #include <machine/frame.h>
    #include <machine/pcb.h>
    #include <machine/psl.h>
    
    /*
     * CPU Feature Attributes
     *
     * These are defined in the PowerPC ELF ABI for the AT_HWCAP vector,
     * and are exported to userland via the machdep.cpu_features
     * sysctl.
     */
    
    extern u_long cpu_features;
    extern u_long cpu_features2;
    
    #define PPC_FEATURE_32          0x80000000      /* Always true */
    #define PPC_FEATURE_64          0x40000000      /* Defined on a 64-bit CPU */
    #define PPC_FEATURE_601_INSTR   0x20000000      /* Defined on a 64-bit CPU */
    #define PPC_FEATURE_HAS_ALTIVEC 0x10000000      
    #define PPC_FEATURE_HAS_FPU     0x08000000
    #define PPC_FEATURE_HAS_MMU     0x04000000
    #define PPC_FEATURE_UNIFIED_CACHE 0x01000000
    #define PPC_FEATURE_HAS_SPE     0x00800000
    #define PPC_FEATURE_HAS_EFP_SINGLE      0x00400000
    #define PPC_FEATURE_HAS_EFP_DOUBLE      0x00200000
    #define PPC_FEATURE_NO_TB       0x00100000
    #define PPC_FEATURE_POWER4      0x00080000
    #define PPC_FEATURE_POWER5      0x00040000
    #define PPC_FEATURE_POWER5_PLUS 0x00020000
    #define PPC_FEATURE_CELL        0x00010000
    #define PPC_FEATURE_BOOKE       0x00008000
    #define PPC_FEATURE_SMT         0x00004000
    #define PPC_FEATURE_ICACHE_SNOOP        0x00002000
    #define PPC_FEATURE_ARCH_2_05   0x00001000
    #define PPC_FEATURE_HAS_DFP     0x00000400
    #define PPC_FEATURE_POWER6_EXT  0x00000200
    #define PPC_FEATURE_ARCH_2_06   0x00000100
    #define PPC_FEATURE_HAS_VSX     0x00000080
    #define PPC_FEATURE_TRUE_LE     0x00000002
    #define PPC_FEATURE_PPC_LE      0x00000001
    
    #define PPC_FEATURE2_ARCH_2_07  0x80000000
    #define PPC_FEATURE2_HTM        0x40000000
    #define PPC_FEATURE2_DSCR       0x20000000
    #define PPC_FEATURE2_EBB        0x10000000
    #define PPC_FEATURE2_ISEL       0x08000000
    #define PPC_FEATURE2_TAR        0x04000000
    #define PPC_FEATURE2_HAS_VEC_CRYPTO     0x02000000
    #define PPC_FEATURE2_HTM_NOSC   0x01000000
    #define PPC_FEATURE2_ARCH_3_00  0x00800000
    #define PPC_FEATURE2_HAS_IEEE128        0x00400000
    #define PPC_FEATURE2_DARN       0x00200000
    #define PPC_FEATURE2_SCV        0x00100000
    #define PPC_FEATURE2_HTM_NOSUSPEND      0x00080000
    
    #define PPC_FEATURE_BITMASK                                             \
            "\2"                                                           \
            "\040PPC32\037PPC64\036PPC601\035ALTIVEC\034FPU\033MMU\031UNIFIEDCACHE" \
            "\030SPE\027SPESFP\026DPESFP\025NOTB\024POWER4\023POWER5\022P5PLUS\021CELL"\
            "\020BOOKE\017SMT\016ISNOOP\015ARCH205\013DFP\011ARCH206\010VSX"\
           "\002TRUELE\001PPCLE"
   #define PPC_FEATURE2_BITMASK                                            \
           "\2"                                                           \
           "\040ARCH207\037HTM\036DSCR\034ISEL\033TAR\032VCRYPTO\031HTMNOSC" \
           "\030ARCH300\027IEEE128\026DARN\025SCV\024HTMNOSUSP"
   
   #define TRAPF_USERMODE(frame)   (((frame)->srr1 & PSL_PR) != 0)
   #define TRAPF_PC(frame)         ((frame)->srr0)
   
   /*
    * CTL_MACHDEP definitions.
    */
   #define CPU_CACHELINE   1
   
   static __inline u_int64_t
   get_cyclecount(void)
   {
           u_int32_t _upper, _lower;
           u_int64_t _time;
   
           __asm __volatile(
                   "mftb %0\n"
                   "mftbu %1"
                   : "=r" (_lower), "=r" (_upper));
   
           _time = (u_int64_t)_upper;
           _time = (_time << 32) + _lower;
           return (_time);
   }
   
   #define cpu_getstack(td)        ((td)->td_frame->fixreg[1])
   #define cpu_spinwait()          __asm __volatile("or 27,27,27") /* yield */
   #define cpu_lock_delay()        DELAY(1)
   
   extern char btext[];
   extern char etext[];
   
   struct thread;
   
   #ifdef __powerpc64__
   extern void enter_idle_powerx(void);
   extern uint64_t can_wakeup;
   extern register_t lpcr;
   #endif
   
   void    cpu_halt(void);
   void    cpu_reset(void);
   void    flush_disable_caches(void);
   void    fork_trampoline(void);
   int     cpu_machine_check(struct thread *, struct trapframe *, int *);
   
   
   #ifndef __powerpc64__
   void    mpc745x_sleep(void);
   #endif
   
   #endif  /* _MACHINE_CPU_H_ */

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