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1 | #ifndef _ASM_X86_UV__BIOS_H |
2 | #define _ASM_X86_UV__BIOS_H | |
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3 | |
4 | /* | |
7f594232 | 5 | * UV BIOS layer definitions. |
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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 | |
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20 | * |
21 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
22 | * Copyright (c) Russ Anderson | |
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23 | */ |
24 | ||
25 | #include <linux/rtc.h> | |
26 | ||
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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 | |
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38 | /* |
39 | * Status values returned from a BIOS call. | |
40 | */ | |
7019cc2d | 41 | enum { |
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42 | BIOS_STATUS_SUCCESS = 0, |
43 | BIOS_STATUS_UNIMPLEMENTED = -ENOSYS, | |
44 | BIOS_STATUS_EINVAL = -EINVAL, | |
45 | BIOS_STATUS_UNAVAIL = -EBUSY | |
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46 | }; |
47 | ||
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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 | }; | |
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57 | |
58 | enum { | |
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59 | BIOS_FREQ_BASE_PLATFORM = 0, |
60 | BIOS_FREQ_BASE_INTERVAL_TIMER = 1, | |
61 | BIOS_FREQ_BASE_REALTIME_CLOCK = 2 | |
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62 | }; |
63 | ||
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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 | ||
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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 | ||
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81 | extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *); |
82 | extern s64 uv_bios_freq_base(u64, u64 *); | |
83 | ||
7f594232 | 84 | extern void uv_bios_init(void); |
7019cc2d | 85 | |
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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 | ||
fc8c2d76 | 92 | extern struct kobject *sgi_uv_kobj; /* /sys/firmware/sgi_uv */ |
7019cc2d | 93 | |
1965aae3 | 94 | #endif /* _ASM_X86_UV__BIOS_H */ |