diff options
Diffstat (limited to 'arch/x86/include/asm/uv/bios.h')
| -rw-r--r-- | arch/x86/include/asm/uv/bios.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/arch/x86/include/asm/uv/bios.h b/arch/x86/include/asm/uv/bios.h new file mode 100644 index 000000000..08b3d810d --- /dev/null +++ b/arch/x86/include/asm/uv/bios.h @@ -0,0 +1,162 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _ASM_X86_UV_BIOS_H +#define _ASM_X86_UV_BIOS_H + +/* + * UV BIOS layer definitions. + * + * (C) Copyright 2020 Hewlett Packard Enterprise Development LP + * Copyright (C) 2007-2017 Silicon Graphics, Inc. All rights reserved. + * Copyright (c) Russ Anderson <rja@sgi.com> + */ + +#include <linux/rtc.h> + +/* + * Values for the BIOS calls. It is passed as the first * argument in the + * BIOS call. Passing any other value in the first argument will result + * in a BIOS_STATUS_UNIMPLEMENTED return status. + */ +enum uv_bios_cmd { + UV_BIOS_COMMON, + UV_BIOS_GET_SN_INFO, + UV_BIOS_FREQ_BASE, + UV_BIOS_WATCHLIST_ALLOC, + UV_BIOS_WATCHLIST_FREE, + UV_BIOS_MEMPROTECT, + UV_BIOS_GET_PARTITION_ADDR, + UV_BIOS_SET_LEGACY_VGA_TARGET +}; + +/* + * Status values returned from a BIOS call. + */ +enum { + BIOS_STATUS_MORE_PASSES = 1, + BIOS_STATUS_SUCCESS = 0, + BIOS_STATUS_UNIMPLEMENTED = -ENOSYS, + BIOS_STATUS_EINVAL = -EINVAL, + BIOS_STATUS_UNAVAIL = -EBUSY, + BIOS_STATUS_ABORT = -EINTR, +}; + +/* Address map parameters */ +struct uv_gam_parameters { + u64 mmr_base; + u64 gru_base; + u8 mmr_shift; /* Convert PNode to MMR space offset */ + u8 gru_shift; /* Convert PNode to GRU space offset */ + u8 gpa_shift; /* Size of offset field in GRU phys addr */ + u8 unused1; +}; + +/* UV_TABLE_GAM_RANGE_ENTRY values */ +#define UV_GAM_RANGE_TYPE_UNUSED 0 /* End of table */ +#define UV_GAM_RANGE_TYPE_RAM 1 /* Normal RAM */ +#define UV_GAM_RANGE_TYPE_NVRAM 2 /* Non-volatile memory */ +#define UV_GAM_RANGE_TYPE_NV_WINDOW 3 /* NVMDIMM block window */ +#define UV_GAM_RANGE_TYPE_NV_MAILBOX 4 /* NVMDIMM mailbox */ +#define UV_GAM_RANGE_TYPE_HOLE 5 /* Unused address range */ +#define UV_GAM_RANGE_TYPE_MAX 6 + +/* The structure stores PA bits 56:26, for 64MB granularity */ +#define UV_GAM_RANGE_SHFT 26 /* 64MB */ + +struct uv_gam_range_entry { + char type; /* Entry type: GAM_RANGE_TYPE_UNUSED, etc. */ + char unused1; + u16 nasid; /* HNasid */ + u16 sockid; /* Socket ID, high bits of APIC ID */ + u16 pnode; /* Index to MMR and GRU spaces */ + u32 unused2; + u32 limit; /* PA bits 56:26 (UV_GAM_RANGE_SHFT) */ +}; + +#define UV_AT_SIZE 8 /* 7 character arch type + NULL char */ +struct uv_arch_type_entry { + char archtype[UV_AT_SIZE]; +}; + +#define UV_SYSTAB_SIG "UVST" +#define UV_SYSTAB_VERSION_1 1 /* UV2/3 BIOS version */ +#define UV_SYSTAB_VERSION_UV4 0x400 /* UV4 BIOS base version */ +#define UV_SYSTAB_VERSION_UV4_1 0x401 /* + gpa_shift */ +#define UV_SYSTAB_VERSION_UV4_2 0x402 /* + TYPE_NVRAM/WINDOW/MBOX */ +#define UV_SYSTAB_VERSION_UV4_3 0x403 /* - GAM Range PXM Value */ +#define UV_SYSTAB_VERSION_UV4_LATEST UV_SYSTAB_VERSION_UV4_3 + +#define UV_SYSTAB_VERSION_UV5 0x500 /* UV5 GAM base version */ +#define UV_SYSTAB_VERSION_UV5_LATEST UV_SYSTAB_VERSION_UV5 + +#define UV_SYSTAB_TYPE_UNUSED 0 /* End of table (offset == 0) */ +#define UV_SYSTAB_TYPE_GAM_PARAMS 1 /* GAM PARAM conversions */ +#define UV_SYSTAB_TYPE_GAM_RNG_TBL 2 /* GAM entry table */ +#define UV_SYSTAB_TYPE_ARCH_TYPE 3 /* UV arch type */ +#define UV_SYSTAB_TYPE_MAX 4 + +/* + * The UV system table describes specific firmware + * capabilities available to the Linux kernel at runtime. + */ +struct uv_systab { + char signature[4]; /* must be UV_SYSTAB_SIG */ + u32 revision; /* distinguish different firmware revs */ + u64 function; /* BIOS runtime callback function ptr */ + u32 size; /* systab size (starting with _VERSION_UV4) */ + struct { + u32 type:8; /* type of entry */ + u32 offset:24; /* byte offset from struct start to entry */ + } entry[1]; /* additional entries follow */ +}; +extern struct uv_systab *uv_systab; +/* (... end of definitions from UV BIOS ...) */ + +enum { + BIOS_FREQ_BASE_PLATFORM = 0, + BIOS_FREQ_BASE_INTERVAL_TIMER = 1, + BIOS_FREQ_BASE_REALTIME_CLOCK = 2 +}; + +union partition_info_u { + u64 val; + struct { + u64 hub_version : 8, + partition_id : 16, + coherence_id : 16, + region_size : 24; + }; +}; + +enum uv_memprotect { + UV_MEMPROT_RESTRICT_ACCESS, + UV_MEMPROT_ALLOW_AMO, + UV_MEMPROT_ALLOW_RW +}; + +extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *); +extern s64 uv_bios_freq_base(u64, u64 *); +extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int, + unsigned long *); +extern int uv_bios_mq_watchlist_free(int, int); +extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); +extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); +extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus); + +extern int uv_bios_init(void); +extern unsigned long get_uv_systab_phys(bool msg); + +extern unsigned long sn_rtc_cycles_per_second; +extern int uv_type; +extern long sn_partition_id; +extern long sn_coherency_id; +extern long sn_region_size; +extern long system_serial_number; + +extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ + +/* + * EFI runtime lock; cf. firmware/efi/runtime-wrappers.c for details + */ +extern struct semaphore __efi_uv_runtime_lock; + +#endif /* _ASM_X86_UV_BIOS_H */ |