mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c8182f0016
Impact: fix crash xpc needs to pass the physical address, not virtual. Testing uncovered this problem. The virtual address happens to work most of the time due to the way bios was masking off the node bits. Passing the physical address makes it work all of the time. Signed-off-by: Russ Anderson <rja@sgi.com> Acked-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
121 lines
3.2 KiB
C
121 lines
3.2 KiB
C
#ifndef _ASM_X86_UV_BIOS_H
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#define _ASM_X86_UV_BIOS_H
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/*
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* UV BIOS layer definitions.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
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* Copyright (c) Russ Anderson
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*/
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#include <linux/rtc.h>
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/*
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* Values for the BIOS calls. It is passed as the first * argument in the
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* BIOS call. Passing any other value in the first argument will result
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* in a BIOS_STATUS_UNIMPLEMENTED return status.
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*/
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enum uv_bios_cmd {
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UV_BIOS_COMMON,
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UV_BIOS_GET_SN_INFO,
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UV_BIOS_FREQ_BASE,
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UV_BIOS_WATCHLIST_ALLOC,
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UV_BIOS_WATCHLIST_FREE,
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UV_BIOS_MEMPROTECT,
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UV_BIOS_GET_PARTITION_ADDR
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};
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/*
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* Status values returned from a BIOS call.
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*/
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enum {
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BIOS_STATUS_MORE_PASSES = 1,
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BIOS_STATUS_SUCCESS = 0,
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BIOS_STATUS_UNIMPLEMENTED = -ENOSYS,
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BIOS_STATUS_EINVAL = -EINVAL,
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BIOS_STATUS_UNAVAIL = -EBUSY
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};
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/*
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* The UV system table describes specific firmware
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* capabilities available to the Linux kernel at runtime.
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*/
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struct uv_systab {
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char signature[4]; /* must be "UVST" */
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u32 revision; /* distinguish different firmware revs */
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u64 function; /* BIOS runtime callback function ptr */
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};
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enum {
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BIOS_FREQ_BASE_PLATFORM = 0,
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BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
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BIOS_FREQ_BASE_REALTIME_CLOCK = 2
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};
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union partition_info_u {
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u64 val;
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struct {
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u64 hub_version : 8,
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partition_id : 16,
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coherence_id : 16,
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region_size : 24;
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};
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};
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union uv_watchlist_u {
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u64 val;
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struct {
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u64 blade : 16,
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size : 32,
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filler : 16;
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};
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};
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enum uv_memprotect {
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UV_MEMPROT_RESTRICT_ACCESS,
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UV_MEMPROT_ALLOW_AMO,
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UV_MEMPROT_ALLOW_RW
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};
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/*
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* bios calls have 6 parameters
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*/
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extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64);
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extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64);
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extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);
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extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);
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extern s64 uv_bios_freq_base(u64, u64 *);
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extern int uv_bios_mq_watchlist_alloc(int, unsigned long, unsigned int,
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unsigned long *);
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extern int uv_bios_mq_watchlist_free(int, int);
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extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
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extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *);
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extern void uv_bios_init(void);
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extern unsigned long sn_rtc_cycles_per_second;
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extern int uv_type;
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extern long sn_partition_id;
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extern long sn_coherency_id;
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extern long sn_region_size;
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#define partition_coherence_id() (sn_coherency_id)
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extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */
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#endif /* _ASM_X86_UV_BIOS_H */
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