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

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 114 lines | 65 code | 14 blank | 35 comment | 0 complexity | f0f292349dd55d739decc9fad2f9b1d3 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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 */