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 */ 32 enum 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 */ 46 enum { 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 BIOS_STATUS_ABORT = -EINTR, 53 }; 54 55 /* Address map parameters */ 56 struct uv_gam_parameters { 57 u64 mmr_base; 58 u64 gru_base; 59 u8 mmr_shift; /* Convert PNode to MMR space offset */ 60 u8 gru_shift; /* Convert PNode to GRU space offset */ 61 u8 gpa_shift; /* Size of offset field in GRU phys addr */ 62 u8 unused1; 63 }; 64 65 /* UV_TABLE_GAM_RANGE_ENTRY values */ 66 #define UV_GAM_RANGE_TYPE_UNUSED 0 /* End of table */ 67 #define UV_GAM_RANGE_TYPE_RAM 1 /* Normal RAM */ 68 #define UV_GAM_RANGE_TYPE_NVRAM 2 /* Non-volatile memory */ 69 #define UV_GAM_RANGE_TYPE_NV_WINDOW 3 /* NVMDIMM block window */ 70 #define UV_GAM_RANGE_TYPE_NV_MAILBOX 4 /* NVMDIMM mailbox */ 71 #define UV_GAM_RANGE_TYPE_HOLE 5 /* Unused address range */ 72 #define UV_GAM_RANGE_TYPE_MAX 6 73 74 /* The structure stores PA bits 56:26, for 64MB granularity */ 75 #define UV_GAM_RANGE_SHFT 26 /* 64MB */ 76 77 struct uv_gam_range_entry { 78 char type; /* Entry type: GAM_RANGE_TYPE_UNUSED, etc. */ 79 char unused1; 80 u16 nasid; /* HNasid */ 81 u16 sockid; /* Socket ID, high bits of APIC ID */ 82 u16 pnode; /* Index to MMR and GRU spaces */ 83 u32 unused2; 84 u32 limit; /* PA bits 56:26 (UV_GAM_RANGE_SHFT) */ 85 }; 86 87 #define UV_SYSTAB_SIG "UVST" 88 #define UV_SYSTAB_VERSION_1 1 /* UV1/2/3 BIOS version */ 89 #define UV_SYSTAB_VERSION_UV4 0x400 /* UV4 BIOS base version */ 90 #define UV_SYSTAB_VERSION_UV4_1 0x401 /* + gpa_shift */ 91 #define UV_SYSTAB_VERSION_UV4_2 0x402 /* + TYPE_NVRAM/WINDOW/MBOX */ 92 #define UV_SYSTAB_VERSION_UV4_3 0x403 /* - GAM Range PXM Value */ 93 #define UV_SYSTAB_VERSION_UV4_LATEST UV_SYSTAB_VERSION_UV4_3 94 95 #define UV_SYSTAB_TYPE_UNUSED 0 /* End of table (offset == 0) */ 96 #define UV_SYSTAB_TYPE_GAM_PARAMS 1 /* GAM PARAM conversions */ 97 #define UV_SYSTAB_TYPE_GAM_RNG_TBL 2 /* GAM entry table */ 98 #define UV_SYSTAB_TYPE_MAX 3 99 100 /* 101 * The UV system table describes specific firmware 102 * capabilities available to the Linux kernel at runtime. 103 */ 104 struct uv_systab { 105 char signature[4]; /* must be UV_SYSTAB_SIG */ 106 u32 revision; /* distinguish different firmware revs */ 107 u64 function; /* BIOS runtime callback function ptr */ 108 u32 size; /* systab size (starting with _VERSION_UV4) */ 109 struct { 110 u32 type:8; /* type of entry */ 111 u32 offset:24; /* byte offset from struct start to entry */ 112 } entry[1]; /* additional entries follow */ 113 }; 114 extern struct uv_systab *uv_systab; 115 /* (... end of definitions from UV BIOS ...) */ 116 117 enum { 118 BIOS_FREQ_BASE_PLATFORM = 0, 119 BIOS_FREQ_BASE_INTERVAL_TIMER = 1, 120 BIOS_FREQ_BASE_REALTIME_CLOCK = 2 121 }; 122 123 union partition_info_u { 124 u64 val; 125 struct { 126 u64 hub_version : 8, 127 partition_id : 16, 128 coherence_id : 16, 129 region_size : 24; 130 }; 131 }; 132 133 enum uv_memprotect { 134 UV_MEMPROT_RESTRICT_ACCESS, 135 UV_MEMPROT_ALLOW_AMO, 136 UV_MEMPROT_ALLOW_RW 137 }; 138 139 /* 140 * bios calls have 6 parameters 141 */ 142 extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64); 143 extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64); 144 145 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *); 146 extern s64 uv_bios_freq_base(u64, u64 *); 147 extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int, 148 unsigned long *); 149 extern int uv_bios_mq_watchlist_free(int, int); 150 extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); 151 extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); 152 extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus); 153 154 extern void uv_bios_init(void); 155 156 extern unsigned long sn_rtc_cycles_per_second; 157 extern int uv_type; 158 extern long sn_partition_id; 159 extern long sn_coherency_id; 160 extern long sn_region_size; 161 extern long system_serial_number; 162 #define uv_partition_coherence_id() (sn_coherency_id) 163 164 extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ 165 166 /* 167 * EFI runtime lock; cf. firmware/efi/runtime-wrappers.c for details 168 */ 169 extern struct semaphore __efi_uv_runtime_lock; 170 171 #endif /* _ASM_X86_UV_BIOS_H */ 172