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 };
  39
  40 /*
  41  * Status values returned from a BIOS call.
  42  */
  43 enum {
  44         BIOS_STATUS_SUCCESS             =  0,
  45         BIOS_STATUS_UNIMPLEMENTED       = -ENOSYS,
  46         BIOS_STATUS_EINVAL              = -EINVAL,
  47         BIOS_STATUS_UNAVAIL             = -EBUSY
  48 };
  49
  50 /*
  51  * The UV system table describes specific firmware
  52  * capabilities available to the Linux kernel at runtime.
  53  */
  54 struct uv_systab {
  55         char signature[4];      /* must be "UVST" */
  56         u32 revision;           /* distinguish different firmware revs */
  57         u64 function;           /* BIOS runtime callback function ptr */
  58 };
  59
  60 enum {
  61         BIOS_FREQ_BASE_PLATFORM = 0,
  62         BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
  63         BIOS_FREQ_BASE_REALTIME_CLOCK = 2
  64 };
  65
  66 union partition_info_u {
  67         u64     val;
  68         struct {
  69                 u64     hub_version     :  8,
  70                         partition_id    : 16,
  71                         coherence_id    : 16,
  72                         region_size     : 24;
  73         };
  74 };
  75
  76 union uv_watchlist_u {
  77         u64     val;
  78         struct {
  79                 u64     blade   : 16,
  80                         size    : 32,
  81                         filler  : 16;
  82         };
  83 };
  84
  85 /*
  86  * bios calls have 6 parameters
  87  */
  88 extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  89 extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  90 extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  91
  92 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);
  93 extern s64 uv_bios_freq_base(u64, u64 *);
  94 extern int uv_bios_mq_watchlist_alloc(int, void *, unsigned int,
  95                                         unsigned long *);
  96 extern int uv_bios_mq_watchlist_free(int, int);
  97
  98 extern void uv_bios_init(void);
  99
 100 extern unsigned long sn_rtc_cycles_per_second;
 101 extern int uv_type;
 102 extern long sn_partition_id;
 103 extern long sn_coherency_id;
 104 extern long sn_region_size;
 105 #define partition_coherence_id()        (sn_coherency_id)
 106
 107 extern struct kobject *sgi_uv_kobj;     /* /sys/firmware/sgi_uv */
 108
 109 #endif /* _ASM_X86_UV_BIOS_H */