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 Silicon Graphics, Inc. All Rights Reserved. 22 * Copyright (c) Russ Anderson 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 }; 41 42 /* 43 * Status values returned from a BIOS call. 44 */ 45 enum { 46 BIOS_STATUS_MORE_PASSES = 1, 47 BIOS_STATUS_SUCCESS = 0, 48 BIOS_STATUS_UNIMPLEMENTED = -ENOSYS, 49 BIOS_STATUS_EINVAL = -EINVAL, 50 BIOS_STATUS_UNAVAIL = -EBUSY 51 }; 52 53 /* 54 * The UV system table describes specific firmware 55 * capabilities available to the Linux kernel at runtime. 56 */ 57 struct uv_systab { 58 char signature[4]; /* must be "UVST" */ 59 u32 revision; /* distinguish different firmware revs */ 60 u64 function; /* BIOS runtime callback function ptr */ 61 }; 62 63 enum { 64 BIOS_FREQ_BASE_PLATFORM = 0, 65 BIOS_FREQ_BASE_INTERVAL_TIMER = 1, 66 BIOS_FREQ_BASE_REALTIME_CLOCK = 2 67 }; 68 69 union partition_info_u { 70 u64 val; 71 struct { 72 u64 hub_version : 8, 73 partition_id : 16, 74 coherence_id : 16, 75 region_size : 24; 76 }; 77 }; 78 79 enum uv_memprotect { 80 UV_MEMPROT_RESTRICT_ACCESS, 81 UV_MEMPROT_ALLOW_AMO, 82 UV_MEMPROT_ALLOW_RW 83 }; 84 85 /* 86 * bios calls have 6 parameters 87 */ 88 extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64); 89 extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64); 90 extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64); 91 92 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *); 93 extern s64 uv_bios_freq_base(u64, u64 *); 94 extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int, 95 unsigned long *); 96 extern int uv_bios_mq_watchlist_free(int, int); 97 extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); 98 extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); 99 100 extern void uv_bios_init(void); 101 102 extern unsigned long sn_rtc_cycles_per_second; 103 extern int uv_type; 104 extern long sn_partition_id; 105 extern long sn_coherency_id; 106 extern long sn_region_size; 107 #define partition_coherence_id() (sn_coherency_id) 108 109 extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ 110 111 #endif /* _ASM_X86_UV_BIOS_H */ 112