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