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 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 */
  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};
  41
  42/*
  43 * Status values returned from a BIOS call.
  44 */
  45enum {
  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 */
  57struct 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
  63enum {
  64        BIOS_FREQ_BASE_PLATFORM = 0,
  65        BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
  66        BIOS_FREQ_BASE_REALTIME_CLOCK = 2
  67};
  68
  69union 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
  79union uv_watchlist_u {
  80        u64     val;
  81        struct {
  82                u64     blade   : 16,
  83                        size    : 32,
  84                        filler  : 16;
  85        };
  86};
  87
  88enum 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 */
  97extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  98extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64);
  99extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
 100
 101extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);
 102extern s64 uv_bios_freq_base(u64, u64 *);
 103extern int uv_bios_mq_watchlist_alloc(int, unsigned long, unsigned int,
 104                                        unsigned long *);
 105extern int uv_bios_mq_watchlist_free(int, int);
 106extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
 107extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);
 108
 109extern void uv_bios_init(void);
 110
 111extern unsigned long sn_rtc_cycles_per_second;
 112extern int uv_type;
 113extern long sn_partition_id;
 114extern long sn_coherency_id;
 115extern long sn_region_size;
 116#define partition_coherence_id()        (sn_coherency_id)
 117
 118extern struct kobject *sgi_uv_kobj;     /* /sys/firmware/sgi_uv */
 119
 120#endif /* _ASM_X86_UV_BIOS_H */
 121