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 }; 37 38 /* 39 * Status values returned from a BIOS call. 40 */ 41 enum { 42 BIOS_STATUS_SUCCESS = 0, 43 BIOS_STATUS_UNIMPLEMENTED = -ENOSYS, 44 BIOS_STATUS_EINVAL = -EINVAL, 45 BIOS_STATUS_UNAVAIL = -EBUSY 46 }; 47 48 /* 49 * The UV system table describes specific firmware 50 * capabilities available to the Linux kernel at runtime. 51 */ 52 struct uv_systab { 53 char signature[4]; /* must be "UVST" */ 54 u32 revision; /* distinguish different firmware revs */ 55 u64 function; /* BIOS runtime callback function ptr */ 56 }; 57 58 enum { 59 BIOS_FREQ_BASE_PLATFORM = 0, 60 BIOS_FREQ_BASE_INTERVAL_TIMER = 1, 61 BIOS_FREQ_BASE_REALTIME_CLOCK = 2 62 }; 63 64 union partition_info_u { 65 u64 val; 66 struct { 67 u64 hub_version : 8, 68 partition_id : 16, 69 coherence_id : 16, 70 region_size : 24; 71 }; 72 }; 73 74 /* 75 * bios calls have 6 parameters 76 */ 77 extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64); 78 extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64); 79 extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64); 80 81 extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *); 82 extern s64 uv_bios_freq_base(u64, u64 *); 83 84 extern void uv_bios_init(void); 85 86 extern int uv_type; 87 extern long sn_partition_id; 88 extern long uv_coherency_id; 89 extern long uv_region_size; 90 #define partition_coherence_id() (uv_coherency_id) 91 92 extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ 93 94 #endif /* _ASM_X86_UV_BIOS_H */ 95