| 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 | /* |
| 55 | * The UV system table describes specific firmware |
| 56 | * capabilities available to the Linux kernel at runtime. |
| 57 | */ |
| 58 | struct uv_systab { |
| 59 | char signature[4]; /* must be "UVST" */ |
| 60 | u32 revision; /* distinguish different firmware revs */ |
| 61 | u64 function; /* BIOS runtime callback function ptr */ |
| 62 | }; |
| 63 | |
| 64 | enum { |
| 65 | BIOS_FREQ_BASE_PLATFORM = 0, |
| 66 | BIOS_FREQ_BASE_INTERVAL_TIMER = 1, |
| 67 | BIOS_FREQ_BASE_REALTIME_CLOCK = 2 |
| 68 | }; |
| 69 | |
| 70 | union partition_info_u { |
| 71 | u64 val; |
| 72 | struct { |
| 73 | u64 hub_version : 8, |
| 74 | partition_id : 16, |
| 75 | coherence_id : 16, |
| 76 | region_size : 24; |
| 77 | }; |
| 78 | }; |
| 79 | |
| 80 | enum uv_memprotect { |
| 81 | UV_MEMPROT_RESTRICT_ACCESS, |
| 82 | UV_MEMPROT_ALLOW_AMO, |
| 83 | UV_MEMPROT_ALLOW_RW |
| 84 | }; |
| 85 | |
| 86 | /* |
| 87 | * bios calls have 6 parameters |
| 88 | */ |
| 89 | extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64); |
| 90 | extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64); |
| 91 | extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64); |
| 92 | |
| 93 | extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *, long *); |
| 94 | extern s64 uv_bios_freq_base(u64, u64 *); |
| 95 | extern int uv_bios_mq_watchlist_alloc(unsigned long, unsigned int, |
| 96 | unsigned long *); |
| 97 | extern int uv_bios_mq_watchlist_free(int, int); |
| 98 | extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect); |
| 99 | extern s64 uv_bios_reserved_page_pa(u64, u64 *, u64 *, u64 *); |
| 100 | extern int uv_bios_set_legacy_vga_target(bool decode, int domain, int bus); |
| 101 | |
| 102 | extern void uv_bios_init(void); |
| 103 | |
| 104 | extern unsigned long sn_rtc_cycles_per_second; |
| 105 | extern int uv_type; |
| 106 | extern long sn_partition_id; |
| 107 | extern long sn_coherency_id; |
| 108 | extern long sn_region_size; |
| 109 | extern long system_serial_number; |
| 110 | #define partition_coherence_id() (sn_coherency_id) |
| 111 | |
| 112 | extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ |
| 113 | |
| 114 | #endif /* _ASM_X86_UV_BIOS_H */ |