LXR linux/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) 2008-2009 Silicon Graphics, Inc.  All Rights Reserved.
  22 *  Copyright (c) Russ Anderson <rja@sgi.com>
  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 */
  32enum 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        UV_BIOS_SET_LEGACY_VGA_TARGET
  41};
  42
  43/*
  44 * Status values returned from a BIOS call.
  45 */
  46enum {
  47        BIOS_STATUS_MORE_PASSES         =  1,
  48        BIOS_STATUS_SUCCESS             =  0,
  49        BIOS_STATUS_UNIMPLEMENTED       = -ENOSYS,
  50        BIOS_STATUS_EINVAL              = -EINVAL,
  51        BIOS_STATUS_UNAVAIL             = -EBUSY
  52};
  53
  54/*
  55 * The UV system table describes specific firmware
  56 * capabilities available to the Linux kernel at runtime.
  57 */
  58struct uv_systab {
  59        char signature[4];      /* must be "UVST" */
  60        u32 revision;           /* distinguish different firmware revs */
  61        u64 function;           /* BIOS runtime callback function ptr */
  62};
  63
  64enum {
  65        BIOS_FREQ_BASE_PLATFORM = 0,
  66        BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
  67        BIOS_FREQ_BASE_REALTIME_CLOCK = 2
  68};
  69
  70union partition_info_u {
  71        u64     val;
  72        struct {
  73                u64     hub_version     :  8,
  74                        partition_id    : 16,
  75                        coherence_id    : 16,
  76                        region_size     : 24;
  77        };
  78};
  79
  80enum uv_memprotect {
  81        UV_MEMPROT_RESTRICT_ACCESS,
  82        UV_MEMPROT_ALLOW_AMO,
  83        UV_MEMPROT_ALLOW_RW
  84};
  85
  86/*
  87 * bios calls have 6 parameters
  88 */
  89extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  90extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  91extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  92
  93extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *);
  94extern s64 uv_bios_freq_base(u64, u64 *);
  95extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int,
  96                                        unsigned long *);
  97extern int uv_bios_mq_watchlist_free(int, int);
  98extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
  99extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);
 100extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus);
 101
 102extern void uv_bios_init(void);
 103
 104extern unsigned long sn_rtc_cycles_per_second;
 105extern int uv_type;
 106extern long sn_partition_id;
 107extern long sn_coherency_id;
 108extern long sn_region_size;
 109extern long system_serial_number;
 110#define partition_coherence_id()        (sn_coherency_id)
 111
 112extern struct kobject *sgi_uv_kobj;     /* /sys/firmware/sgi_uv */
 113
 114#endif /* _ASM_X86_UV_BIOS_H */
 115