1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* BIOS run time interface routines.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) Russ Anderson
*/
#include <linux/efi.h>
#include <asm/efi.h>
#include <linux/io.h>
#include <asm/uv/bios.h>
#include <asm/uv/uv_hub.h>
struct uv_systab uv_systab;
s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5)
{
struct uv_systab *tab = &uv_systab;
if (!tab->function)
/*
* BIOS does not support UV systab
*/
return BIOS_STATUS_UNIMPLEMENTED;
return efi_call6((void *)__va(tab->function),
(u64)which, a1, a2, a3, a4, a5);
}
s64 uv_bios_call_irqsave(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
u64 a4, u64 a5)
{
unsigned long bios_flags;
s64 ret;
local_irq_save(bios_flags);
ret = uv_bios_call(which, a1, a2, a3, a4, a5);
local_irq_restore(bios_flags);
return ret;
}
s64 uv_bios_call_reentrant(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
u64 a4, u64 a5)
{
s64 ret;
preempt_disable();
ret = uv_bios_call(which, a1, a2, a3, a4, a5);
preempt_enable();
return ret;
}
long sn_partition_id;
EXPORT_SYMBOL_GPL(sn_partition_id);
long uv_coherency_id;
EXPORT_SYMBOL_GPL(uv_coherency_id);
long uv_region_size;
EXPORT_SYMBOL_GPL(uv_region_size);
int uv_type;
s64 uv_bios_get_sn_info(int fc, int *uvtype, long *partid, long *coher,
long *region)
{
s64 ret;
u64 v0, v1;
union partition_info_u part;
ret = uv_bios_call_irqsave(UV_BIOS_GET_SN_INFO, fc,
(u64)(&v0), (u64)(&v1), 0, 0);
if (ret != BIOS_STATUS_SUCCESS)
return ret;
part.val = v0;
if (uvtype)
*uvtype = part.hub_version;
if (partid)
*partid = part.partition_id;
if (coher)
*coher = part.coherence_id;
if (region)
*region = part.region_size;
return ret;
}
s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second)
{
return uv_bios_call(UV_BIOS_FREQ_BASE, clock_type,
(u64)ticks_per_second, 0, 0, 0);
}
EXPORT_SYMBOL_GPL(uv_bios_freq_base);
#ifdef CONFIG_EFI
void uv_bios_init(void)
{
struct uv_systab *tab;
if ((efi.uv_systab == EFI_INVALID_TABLE_ADDR) ||
(efi.uv_systab == (unsigned long)NULL)) {
printk(KERN_CRIT "No EFI UV System Table.\n");
uv_systab.function = (unsigned long)NULL;
return;
}
tab = (struct uv_systab *)ioremap(efi.uv_systab,
sizeof(struct uv_systab));
if (strncmp(tab->signature, "UVST", 4) != 0)
printk(KERN_ERR "bad signature in UV system table!");
/*
* Copy table to permanent spot for later use.
*/
memcpy(&uv_systab, tab, sizeof(struct uv_systab));
iounmap(tab);
printk(KERN_INFO "EFI UV System Table Revision %d\n", tab->revision);
}
#else /* !CONFIG_EFI */
void uv_bios_init(void) { }
#endif
|
