arch/sparc/include/asm/head_64.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SPARC64_HEAD_H
   3 #define _SPARC64_HEAD_H
   4
   5 #include <asm/pstate.h>
   6
   7         /* wrpr %g0, val, %gl */
   8 #define SET_GL(val)     \
   9         .word   0xa1902000 | val
  10
  11         /* rdpr %gl, %gN */
  12 #define GET_GL_GLOBAL(N)        \
  13         .word   0x81540000 | (N << 25)
  14
  15 #define KERNBASE        0x400000
  16
  17 #define PTREGS_OFF      (STACK_BIAS + STACKFRAME_SZ)
  18
  19 #define RTRAP_PSTATE            (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE)
  20 #define RTRAP_PSTATE_IRQOFF     (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV)
  21 #define RTRAP_PSTATE_AG_IRQOFF  (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG)
  22
  23 #define __CHEETAH_ID    0x003e0014
  24 #define __JALAPENO_ID   0x003e0016
  25 #define __SERRANO_ID    0x003e0022
  26
  27 #define CHEETAH_MANUF           0x003e
  28 #define CHEETAH_IMPL            0x0014 /* Ultra-III   */
  29 #define CHEETAH_PLUS_IMPL       0x0015 /* Ultra-III+  */
  30 #define JALAPENO_IMPL           0x0016 /* Ultra-IIIi  */
  31 #define JAGUAR_IMPL             0x0018 /* Ultra-IV    */
  32 #define PANTHER_IMPL            0x0019 /* Ultra-IV+   */
  33 #define SERRANO_IMPL            0x0022 /* Ultra-IIIi+ */
  34
  35 #define BRANCH_IF_SUN4V(tmp1,label)             \
  36         sethi   %hi(is_sun4v), %tmp1;           \
  37         lduw    [%tmp1 + %lo(is_sun4v)], %tmp1; \
  38         brnz,pn %tmp1, label;                   \
  39          nop
  40
  41 #define BRANCH_IF_CHEETAH_BASE(tmp1,tmp2,label) \
  42         rdpr    %ver, %tmp1;                    \
  43         sethi   %hi(__CHEETAH_ID), %tmp2;       \
  44         srlx    %tmp1, 32, %tmp1;               \
  45         or      %tmp2, %lo(__CHEETAH_ID), %tmp2;\
  46         cmp     %tmp1, %tmp2;                   \
  47         be,pn   %icc, label;                    \
  48          nop;
  49
  50 #define BRANCH_IF_JALAPENO(tmp1,tmp2,label)     \
  51         rdpr    %ver, %tmp1;                    \
  52         sethi   %hi(__JALAPENO_ID), %tmp2;      \
  53         srlx    %tmp1, 32, %tmp1;               \
  54         or      %tmp2, %lo(__JALAPENO_ID), %tmp2;\
  55         cmp     %tmp1, %tmp2;                   \
  56         be,pn   %icc, label;                    \
  57          nop;
  58
  59 #define BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(tmp1,tmp2,label)     \
  60         rdpr    %ver, %tmp1;                    \
  61         srlx    %tmp1, (32 + 16), %tmp2;        \
  62         cmp     %tmp2, CHEETAH_MANUF;           \
  63         bne,pt  %xcc, 99f;                      \
  64          sllx   %tmp1, 16, %tmp1;               \
  65         srlx    %tmp1, (32 + 16), %tmp2;        \
  66         cmp     %tmp2, CHEETAH_PLUS_IMPL;       \
  67         bgeu,pt %xcc, label;                    \
  68 99:      nop;
  69
  70 #define BRANCH_IF_ANY_CHEETAH(tmp1,tmp2,label)  \
  71         rdpr    %ver, %tmp1;                    \
  72         srlx    %tmp1, (32 + 16), %tmp2;        \
  73         cmp     %tmp2, CHEETAH_MANUF;           \
  74         bne,pt  %xcc, 99f;                      \
  75          sllx   %tmp1, 16, %tmp1;               \
  76         srlx    %tmp1, (32 + 16), %tmp2;        \
  77         cmp     %tmp2, CHEETAH_IMPL;            \
  78         bgeu,pt %xcc, label;                    \
  79 99:      nop;
  80
  81 #endif /* !(_SPARC64_HEAD_H) */