arch/x86/include/asm/uv/bios.h

   1 #ifndef _ASM_X86_UV_BIOS_H
   2 #define _ASM_X86_UV_BIOS_H
   3
   4 /*
   5  * UV BIOS layer definitions.
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20  *
  21  *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
  22  *  Copyright (c) Russ Anderson
  23  */
  24
  25 #include <linux/rtc.h>
  26
  27 /*
  28  * Values for the BIOS calls.  It is passed as the first * argument in the
  29  * BIOS call.  Passing any other value in the first argument will result
  30  * in a BIOS_STATUS_UNIMPLEMENTED return status.
  31  */
  32 enum uv_bios_cmd {
  33         UV_BIOS_COMMON,
  34         UV_BIOS_GET_SN_INFO,
  35         UV_BIOS_FREQ_BASE,
  36         UV_BIOS_WATCHLIST_ALLOC,
  37         UV_BIOS_WATCHLIST_FREE,
  38         UV_BIOS_MEMPROTECT,
  39         UV_BIOS_GET_PARTITION_ADDR
  40 };
  41
  42 /*
  43  * Status values returned from a BIOS call.
  44  */
  45 enum {
  46         BIOS_STATUS_MORE_PASSES         =  1,
  47         BIOS_STATUS_SUCCESS             =  0,
  48         BIOS_STATUS_UNIMPLEMENTED       = -ENOSYS,
  49         BIOS_STATUS_EINVAL              = -EINVAL,
  50         BIOS_STATUS_UNAVAIL             = -EBUSY
  51 };
  52
  53 /*
  54  * The UV system table describes specific firmware
  55  * capabilities available to the Linux kernel at runtime.
  56  */
  57 struct uv_systab {
  58         char signature[4];      /* must be "UVST" */
  59         u32 revision;           /* distinguish different firmware revs */
  60         u64 function;           /* BIOS runtime callback function ptr */
  61 };
  62
  63 enum {
  64         BIOS_FREQ_BASE_PLATFORM = 0,
  65         BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
  66         BIOS_FREQ_BASE_REALTIME_CLOCK = 2
  67 };
  68
  69 union partition_info_u {
  70         u64     val;
  71         struct {
  72                 u64     hub_version     :  8,
  73                         partition_id    : 16,
  74                         coherence_id    : 16,
  75                         region_size     : 24;
  76         };
  77 };
  78
  79 union uv_watchlist_u {
  80         u64     val;
  81         struct {
  82                 u64     blade   : 16,
  83                         size    : 32,
  84                         filler  : 16;
  85         };
  86 };
  87
  88 enum uv_memprotect {
  89         UV_MEMPROT_RESTRICT_ACCESS,
  90         UV_MEMPROT_ALLOW_AMO,
  91         UV_MEMPROT_ALLOW_RW
  92 };
  93
  94 /*
  95  * bios calls have 6 parameters
  96  */
  97 extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  98 extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  99 extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
 100
 101 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);
 102 extern s64 uv_bios_freq_base(u64, u64 *);
 103 extern int uv_bios_mq_watchlist_alloc(int, unsigned long, unsigned int,
 104                                         unsigned long *);
 105 extern int uv_bios_mq_watchlist_free(int, int);
 106 extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
 107 extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);
 108
 109 extern void uv_bios_init(void);
 110
 111 extern unsigned long sn_rtc_cycles_per_second;
 112 extern int uv_type;
 113 extern long sn_partition_id;
 114 extern long sn_coherency_id;
 115 extern long sn_region_size;
 116 #define partition_coherence_id()        (sn_coherency_id)
 117
 118 extern struct kobject *sgi_uv_kobj;     /* /sys/firmware/sgi_uv */
 119
 120 #endif /* _ASM_X86_UV_BIOS_H */