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7019cc2d RA |
1 | /* |
2 | * BIOS run time interface routines. | |
3 | * | |
7019cc2d RA |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
7f594232 RA |
17 | * |
18 | * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. | |
19 | * Copyright (c) Russ Anderson | |
7019cc2d RA |
20 | */ |
21 | ||
7f594232 RA |
22 | #include <linux/efi.h> |
23 | #include <asm/efi.h> | |
24 | #include <linux/io.h> | |
7019cc2d | 25 | #include <asm/uv/bios.h> |
922402f1 | 26 | #include <asm/uv/uv_hub.h> |
7019cc2d | 27 | |
7f594232 RA |
28 | struct uv_systab uv_systab; |
29 | ||
30 | s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5) | |
7019cc2d | 31 | { |
7f594232 RA |
32 | struct uv_systab *tab = &uv_systab; |
33 | ||
34 | if (!tab->function) | |
35 | /* | |
36 | * BIOS does not support UV systab | |
37 | */ | |
38 | return BIOS_STATUS_UNIMPLEMENTED; | |
39 | ||
40 | return efi_call6((void *)__va(tab->function), | |
41 | (u64)which, a1, a2, a3, a4, a5); | |
7019cc2d RA |
42 | } |
43 | ||
7f594232 RA |
44 | s64 uv_bios_call_irqsave(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, |
45 | u64 a4, u64 a5) | |
7019cc2d | 46 | { |
7f594232 RA |
47 | unsigned long bios_flags; |
48 | s64 ret; | |
49 | ||
50 | local_irq_save(bios_flags); | |
51 | ret = uv_bios_call(which, a1, a2, a3, a4, a5); | |
52 | local_irq_restore(bios_flags); | |
53 | ||
54 | return ret; | |
55 | } | |
56 | ||
57 | s64 uv_bios_call_reentrant(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, | |
58 | u64 a4, u64 a5) | |
59 | { | |
60 | s64 ret; | |
61 | ||
62 | preempt_disable(); | |
63 | ret = uv_bios_call(which, a1, a2, a3, a4, a5); | |
64 | preempt_enable(); | |
7019cc2d | 65 | |
7f594232 RA |
66 | return ret; |
67 | } | |
68 | ||
922402f1 RA |
69 | |
70 | long sn_partition_id; | |
71 | EXPORT_SYMBOL_GPL(sn_partition_id); | |
b0f20989 RA |
72 | long sn_coherency_id; |
73 | EXPORT_SYMBOL_GPL(sn_coherency_id); | |
74 | long sn_region_size; | |
75 | EXPORT_SYMBOL_GPL(sn_region_size); | |
922402f1 RA |
76 | int uv_type; |
77 | ||
78 | ||
79 | s64 uv_bios_get_sn_info(int fc, int *uvtype, long *partid, long *coher, | |
80 | long *region) | |
81 | { | |
82 | s64 ret; | |
83 | u64 v0, v1; | |
84 | union partition_info_u part; | |
85 | ||
86 | ret = uv_bios_call_irqsave(UV_BIOS_GET_SN_INFO, fc, | |
87 | (u64)(&v0), (u64)(&v1), 0, 0); | |
88 | if (ret != BIOS_STATUS_SUCCESS) | |
89 | return ret; | |
90 | ||
91 | part.val = v0; | |
92 | if (uvtype) | |
93 | *uvtype = part.hub_version; | |
94 | if (partid) | |
95 | *partid = part.partition_id; | |
96 | if (coher) | |
97 | *coher = part.coherence_id; | |
98 | if (region) | |
99 | *region = part.region_size; | |
100 | return ret; | |
101 | } | |
102 | ||
64ccf2f9 RA |
103 | int |
104 | uv_bios_mq_watchlist_alloc(int blade, void *mq, unsigned int mq_size, | |
105 | unsigned long *intr_mmr_offset) | |
106 | { | |
107 | union uv_watchlist_u size_blade; | |
108 | unsigned long addr; | |
109 | u64 watchlist; | |
110 | s64 ret; | |
111 | ||
112 | addr = (unsigned long)mq; | |
113 | size_blade.size = mq_size; | |
114 | size_blade.blade = blade; | |
115 | ||
116 | /* | |
117 | * bios returns watchlist number or negative error number. | |
118 | */ | |
119 | ret = (int)uv_bios_call_irqsave(UV_BIOS_WATCHLIST_ALLOC, addr, | |
120 | size_blade.val, (u64)intr_mmr_offset, | |
121 | (u64)&watchlist, 0); | |
122 | if (ret < BIOS_STATUS_SUCCESS) | |
123 | return ret; | |
124 | ||
125 | return watchlist; | |
126 | } | |
127 | EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_alloc); | |
128 | ||
129 | int | |
130 | uv_bios_mq_watchlist_free(int blade, int watchlist_num) | |
131 | { | |
132 | return (int)uv_bios_call_irqsave(UV_BIOS_WATCHLIST_FREE, | |
133 | blade, watchlist_num, 0, 0, 0); | |
134 | } | |
135 | EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_free); | |
922402f1 RA |
136 | |
137 | s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second) | |
7f594232 RA |
138 | { |
139 | return uv_bios_call(UV_BIOS_FREQ_BASE, clock_type, | |
922402f1 | 140 | (u64)ticks_per_second, 0, 0, 0); |
7019cc2d | 141 | } |
922402f1 | 142 | EXPORT_SYMBOL_GPL(uv_bios_freq_base); |
7f594232 RA |
143 | |
144 | ||
145 | #ifdef CONFIG_EFI | |
146 | void uv_bios_init(void) | |
147 | { | |
148 | struct uv_systab *tab; | |
149 | ||
150 | if ((efi.uv_systab == EFI_INVALID_TABLE_ADDR) || | |
151 | (efi.uv_systab == (unsigned long)NULL)) { | |
152 | printk(KERN_CRIT "No EFI UV System Table.\n"); | |
153 | uv_systab.function = (unsigned long)NULL; | |
154 | return; | |
155 | } | |
156 | ||
157 | tab = (struct uv_systab *)ioremap(efi.uv_systab, | |
158 | sizeof(struct uv_systab)); | |
159 | if (strncmp(tab->signature, "UVST", 4) != 0) | |
160 | printk(KERN_ERR "bad signature in UV system table!"); | |
161 | ||
162 | /* | |
163 | * Copy table to permanent spot for later use. | |
164 | */ | |
165 | memcpy(&uv_systab, tab, sizeof(struct uv_systab)); | |
166 | iounmap(tab); | |
167 | ||
168 | printk(KERN_INFO "EFI UV System Table Revision %d\n", tab->revision); | |
169 | } | |
170 | #else /* !CONFIG_EFI */ | |
171 | ||
172 | void uv_bios_init(void) { } | |
173 | #endif | |
174 |