projects / deliverable / linux.git / blame
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| 77ef50a5 VN |
1 | #ifndef ASM_X86__UV__BIOS_H |
| 2 | #define ASM_X86__UV__BIOS_H | |
| 7019cc2d RA |
3 | |
| 4 | /* | |
| 7f594232 | 5 | * UV BIOS layer definitions. |
| 7019cc2d RA |
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 | |
| 7f594232 RA |
20 | * |
| 21 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
| 22 | * Copyright (c) Russ Anderson | |
| 7019cc2d RA |
23 | */ |
| 24 | ||
| 25 | #include <linux/rtc.h> | |
| 26 | ||
| 7f594232 RA |
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 | }; | |
| 7019cc2d | 37 | |
| 7f594232 RA |
38 | /* |
| 39 | * Status values returned from a BIOS call. | |
| 40 | */ | |
| 7019cc2d | 41 | enum { |
| 7f594232 RA |
42 | BIOS_STATUS_SUCCESS = 0, |
| 43 | BIOS_STATUS_UNIMPLEMENTED = -ENOSYS, | |
| 44 | BIOS_STATUS_EINVAL = -EINVAL, | |
| 45 | BIOS_STATUS_UNAVAIL = -EBUSY | |
| 7019cc2d RA |
46 | }; |
| 47 | ||
| 7f594232 RA |
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 | }; | |
| 7019cc2d RA |
57 | |
| 58 | enum { | |
| 7f594232 RA |
59 | BIOS_FREQ_BASE_PLATFORM = 0, |
| 60 | BIOS_FREQ_BASE_INTERVAL_TIMER = 1, | |
| 61 | BIOS_FREQ_BASE_REALTIME_CLOCK = 2 | |
| 7019cc2d RA |
62 | }; |
| 63 | ||
| 7f594232 RA |
64 | /* |
| 65 | * bios calls have 6 parameters | |
| 66 | */ | |
| 67 | extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64); | |
| 68 | extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64); | |
| 69 | extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64); | |
| 70 | ||
| 71 | extern void uv_bios_init(void); | |
| 7019cc2d RA |
72 | |
| 73 | extern long | |
| 74 | x86_bios_freq_base(unsigned long which, unsigned long *ticks_per_second, | |
| 75 | unsigned long *drift_info); | |
| 7019cc2d | 76 | |
| 77ef50a5 | 77 | #endif /* ASM_X86__UV__BIOS_H */ |