2 * BIOS run time interface routines.
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.
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.
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
18 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
19 * Copyright (c) Russ Anderson
22 #include <linux/efi.h>
25 #include <asm/uv/bios.h>
26 #include <asm/uv/uv_hub.h>
28 static struct uv_systab uv_systab;
30 s64 uv_bios_call(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, u64 a4, u64 a5)
32 struct uv_systab *tab = &uv_systab;
36 * BIOS does not support UV systab
38 return BIOS_STATUS_UNIMPLEMENTED;
40 return efi_call6((void *)__va(tab->function),
41 (u64)which, a1, a2, a3, a4, a5);
44 s64 uv_bios_call_irqsave(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
47 unsigned long bios_flags;
50 local_irq_save(bios_flags);
51 ret = uv_bios_call(which, a1, a2, a3, a4, a5);
52 local_irq_restore(bios_flags);
57 s64 uv_bios_call_reentrant(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3,
63 ret = uv_bios_call(which, a1, a2, a3, a4, a5);
71 EXPORT_SYMBOL_GPL(sn_partition_id);
73 EXPORT_SYMBOL_GPL(sn_coherency_id);
75 EXPORT_SYMBOL_GPL(sn_region_size);
79 s64 uv_bios_get_sn_info(int fc, int *uvtype, long *partid, long *coher,
84 union partition_info_u part;
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)
93 *uvtype = part.hub_version;
95 *partid = part.partition_id;
97 *coher = part.coherence_id;
99 *region = part.region_size;
104 uv_bios_mq_watchlist_alloc(unsigned long addr, unsigned int mq_size,
105 unsigned long *intr_mmr_offset)
111 * bios returns watchlist number or negative error number.
113 ret = (int)uv_bios_call_irqsave(UV_BIOS_WATCHLIST_ALLOC, addr,
114 mq_size, (u64)intr_mmr_offset,
116 if (ret < BIOS_STATUS_SUCCESS)
121 EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_alloc);
124 uv_bios_mq_watchlist_free(int blade, int watchlist_num)
126 return (int)uv_bios_call_irqsave(UV_BIOS_WATCHLIST_FREE,
127 blade, watchlist_num, 0, 0, 0);
129 EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_free);
132 uv_bios_change_memprotect(u64 paddr, u64 len, enum uv_memprotect perms)
134 return uv_bios_call_irqsave(UV_BIOS_MEMPROTECT, paddr, len,
137 EXPORT_SYMBOL_GPL(uv_bios_change_memprotect);
140 uv_bios_reserved_page_pa(u64 buf, u64 *cookie, u64 *addr, u64 *len)
144 ret = uv_bios_call_irqsave(UV_BIOS_GET_PARTITION_ADDR, (u64)cookie,
145 (u64)addr, buf, (u64)len, 0);
148 EXPORT_SYMBOL_GPL(uv_bios_reserved_page_pa);
150 s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second)
152 return uv_bios_call(UV_BIOS_FREQ_BASE, clock_type,
153 (u64)ticks_per_second, 0, 0, 0);
155 EXPORT_SYMBOL_GPL(uv_bios_freq_base);
159 void uv_bios_init(void)
161 struct uv_systab *tab;
163 if ((efi.uv_systab == EFI_INVALID_TABLE_ADDR) ||
164 (efi.uv_systab == (unsigned long)NULL)) {
165 printk(KERN_CRIT "No EFI UV System Table.\n");
166 uv_systab.function = (unsigned long)NULL;
170 tab = (struct uv_systab *)ioremap(efi.uv_systab,
171 sizeof(struct uv_systab));
172 if (strncmp(tab->signature, "UVST", 4) != 0)
173 printk(KERN_ERR "bad signature in UV system table!");
176 * Copy table to permanent spot for later use.
178 memcpy(&uv_systab, tab, sizeof(struct uv_systab));
181 printk(KERN_INFO "EFI UV System Table Revision %d\n",
184 #else /* !CONFIG_EFI */
186 void uv_bios_init(void) { }