1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef _ASM_X86_UV_BIOS_H 3 #define _ASM_X86_UV_BIOS_H 4 5 /* 6 * UV BIOS layer definitions. 7 * 8 * (C) Copyright 2020 Hewlett Packard Enterprise Development LP 9 * Copyright (C) 2007-2017 Silicon Graphics, Inc. All rights reserved. 10 * Copyright (c) Russ Anderson <rja@sgi.com> 11 */ 12 13 #include <linux/rtc.h> 14 15 /* 16 * Values for the BIOS calls. It is passed as the first * argument in the 17 * BIOS call. Passing any other value in the first argument will result 18 * in a BIOS_STATUS_UNIMPLEMENTED return status. 19 */ 20 enum uv_bios_cmd { 21 UV_BIOS_COMMON, 22 UV_BIOS_GET_SN_INFO, 23 UV_BIOS_FREQ_BASE, 24 UV_BIOS_WATCHLIST_ALLOC, 25 UV_BIOS_WATCHLIST_FREE, 26 UV_BIOS_MEMPROTECT, 27 UV_BIOS_GET_PARTITION_ADDR, 28 UV_BIOS_SET_LEGACY_VGA_TARGET 29 }; 30 31 #define UV_BIOS_EXTRA 0x10000 32 #define UV_BIOS_GET_PCI_TOPOLOGY 0x10001 33 #define UV_BIOS_GET_GEOINFO 0x10003 34 35 #define UV_BIOS_EXTRA_OP_MEM_COPYIN 0x1000 36 #define UV_BIOS_EXTRA_OP_MEM_COPYOUT 0x2000 37 #define UV_BIOS_EXTRA_OP_MASK 0x0fff 38 #define UV_BIOS_EXTRA_GET_HEAPSIZE 1 39 #define UV_BIOS_EXTRA_INSTALL_HEAP 2 40 #define UV_BIOS_EXTRA_MASTER_NASID 3 41 #define UV_BIOS_EXTRA_OBJECT_COUNT (10|UV_BIOS_EXTRA_OP_MEM_COPYOUT) 42 #define UV_BIOS_EXTRA_ENUM_OBJECTS (12|UV_BIOS_EXTRA_OP_MEM_COPYOUT) 43 #define UV_BIOS_EXTRA_ENUM_PORTS (13|UV_BIOS_EXTRA_OP_MEM_COPYOUT) 44 45 /* 46 * Status values returned from a BIOS call. 47 */ 48 enum { 49 BIOS_STATUS_MORE_PASSES = 1, 50 BIOS_STATUS_SUCCESS = 0, 51 BIOS_STATUS_UNIMPLEMENTED = -ENOSYS, 52 BIOS_STATUS_EINVAL = -EINVAL, 53 BIOS_STATUS_UNAVAIL = -EBUSY, 54 BIOS_STATUS_ABORT = -EINTR, 55 }; 56 57 /* Address map parameters */ 58 struct uv_gam_parameters { 59 u64 mmr_base; 60 u64 gru_base; 61 u8 mmr_shift; /* Convert PNode to MMR space offset */ 62 u8 gru_shift; /* Convert PNode to GRU space offset */ 63 u8 gpa_shift; /* Size of offset field in GRU phys addr */ 64 u8 unused1; 65 }; 66 67 /* UV_TABLE_GAM_RANGE_ENTRY values */ 68 #define UV_GAM_RANGE_TYPE_UNUSED 0 /* End of table */ 69 #define UV_GAM_RANGE_TYPE_RAM 1 /* Normal RAM */ 70 #define UV_GAM_RANGE_TYPE_NVRAM 2 /* Non-volatile memory */ 71 #define UV_GAM_RANGE_TYPE_NV_WINDOW 3 /* NVMDIMM block window */ 72 #define UV_GAM_RANGE_TYPE_NV_MAILBOX 4 /* NVMDIMM mailbox */ 73 #define UV_GAM_RANGE_TYPE_HOLE 5 /* Unused address range */ 74 #define UV_GAM_RANGE_TYPE_MAX 6 75 76 /* The structure stores PA bits 56:26, for 64MB granularity */ 77 #define UV_GAM_RANGE_SHFT 26 /* 64MB */ 78 79 struct uv_gam_range_entry { 80 char type; /* Entry type: GAM_RANGE_TYPE_UNUSED, etc. */ 81 char unused1; 82 u16 nasid; /* HNasid */ 83 u16 sockid; /* Socket ID, high bits of APIC ID */ 84 u16 pnode; /* Index to MMR and GRU spaces */ 85 u32 unused2; 86 u32 limit; /* PA bits 56:26 (UV_GAM_RANGE_SHFT) */ 87 }; 88 89 #define UV_AT_SIZE 8 /* 7 character arch type + NULL char */ 90 struct uv_arch_type_entry { 91 char archtype[UV_AT_SIZE]; 92 }; 93 94 #define UV_SYSTAB_SIG "UVST" 95 #define UV_SYSTAB_VERSION_1 1 /* UV2/3 BIOS version */ 96 #define UV_SYSTAB_VERSION_UV4 0x400 /* UV4 BIOS base version */ 97 #define UV_SYSTAB_VERSION_UV4_1 0x401 /* + gpa_shift */ 98 #define UV_SYSTAB_VERSION_UV4_2 0x402 /* + TYPE_NVRAM/WINDOW/MBOX */ 99 #define UV_SYSTAB_VERSION_UV4_3 0x403 /* - GAM Range PXM Value */ 100 #define UV_SYSTAB_VERSION_UV4_LATEST UV_SYSTAB_VERSION_UV4_3 101 102 #define UV_SYSTAB_VERSION_UV5 0x500 /* UV5 GAM base version */ 103 #define UV_SYSTAB_VERSION_UV5_LATEST UV_SYSTAB_VERSION_UV5 104 105 #define UV_SYSTAB_TYPE_UNUSED 0 /* End of table (offset == 0) */ 106 #define UV_SYSTAB_TYPE_GAM_PARAMS 1 /* GAM PARAM conversions */ 107 #define UV_SYSTAB_TYPE_GAM_RNG_TBL 2 /* GAM entry table */ 108 #define UV_SYSTAB_TYPE_ARCH_TYPE 3 /* UV arch type */ 109 #define UV_SYSTAB_TYPE_MAX 4 110 111 /* 112 * The UV system table describes specific firmware 113 * capabilities available to the Linux kernel at runtime. 114 */ 115 struct uv_systab { 116 char signature[4]; /* must be UV_SYSTAB_SIG */ 117 u32 revision; /* distinguish different firmware revs */ 118 u64 function; /* BIOS runtime callback function ptr */ 119 u32 size; /* systab size (starting with _VERSION_UV4) */ 120 struct { 121 u32 type:8; /* type of entry */ 122 u32 offset:24; /* byte offset from struct start to entry */ 123 } entry[1]; /* additional entries follow */ 124 }; 125 extern struct uv_systab *uv_systab; 126 127 #define UV_BIOS_MAXSTRING 128 128 struct uv_bios_hub_info { 129 unsigned int id; 130 union { 131 struct { 132 unsigned long long this_part:1; 133 unsigned long long is_shared:1; 134 unsigned long long is_disabled:1; 135 } fields; 136 struct { 137 unsigned long long flags; 138 unsigned long long reserved; 139 } b; 140 } f; 141 char name[UV_BIOS_MAXSTRING]; 142 char location[UV_BIOS_MAXSTRING]; 143 unsigned int ports; 144 }; 145 146 struct uv_bios_port_info { 147 unsigned int port; 148 unsigned int conn_id; 149 unsigned int conn_port; 150 }; 151 152 /* (... end of definitions from UV BIOS ...) */ 153 154 enum { 155 BIOS_FREQ_BASE_PLATFORM = 0, 156 BIOS_FREQ_BASE_INTERVAL_TIMER = 1, 157 BIOS_FREQ_BASE_REALTIME_CLOCK = 2 158 }; 159 160 union partition_info_u { 161 u64 val; 162 struct { 163 u64 hub_version : 8, 164 partition_id : 16, 165 coherence_id : 16, 166 region_size : 24; 167 }; 168 }; 169 170 enum uv_memprotect { 171 UV_MEMPROT_RESTRICT_ACCESS, 172 UV_MEMPROT_ALLOW_AMO, 173 UV_MEMPROT_ALLOW_RW 174 }; 175 176 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *); 177 extern s64 uv_bios_freq_base(u64, u64 *); 178 extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int, 179 unsigned long *); 180 extern int uv_bios_mq_watchlist_free(int, int); 181 extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); 182 extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); 183 extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus); 184 185 extern s64 uv_bios_get_master_nasid(u64 sz, u64 *nasid); 186 extern s64 uv_bios_get_heapsize(u64 nasid, u64 sz, u64 *heap_sz); 187 extern s64 uv_bios_install_heap(u64 nasid, u64 sz, u64 *heap); 188 extern s64 uv_bios_obj_count(u64 nasid, u64 sz, u64 *objcnt); 189 extern s64 uv_bios_enum_objs(u64 nasid, u64 sz, u64 *objbuf); 190 extern s64 uv_bios_enum_ports(u64 nasid, u64 obj_id, u64 sz, u64 *portbuf); 191 extern s64 uv_bios_get_geoinfo(u64 nasid, u64 sz, u64 *geo); 192 extern s64 uv_bios_get_pci_topology(u64 sz, u64 *buf); 193 194 extern int uv_bios_init(void); 195 extern unsigned long get_uv_systab_phys(bool msg); 196 197 extern unsigned long sn_rtc_cycles_per_second; 198 extern int uv_type; 199 extern long sn_partition_id; 200 extern long sn_coherency_id; 201 extern long sn_region_size; 202 extern long system_serial_number; 203 extern ssize_t uv_get_archtype(char *buf, int len); 204 extern int uv_get_hubless_system(void); 205 206 extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ 207 208 /* 209 * EFI runtime lock; cf. firmware/efi/runtime-wrappers.c for details 210 */ 211 extern struct semaphore __efi_uv_runtime_lock; 212 213 #endif /* _ASM_X86_UV_BIOS_H */ 214