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Merge branch 'x86/uv' into x86/x2apic 

Conflicts:

	arch/x86/kernel/Makefile

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2008-07-18 23:01:04 +02:00
parent 453c1404c5 7019cc2dd6
commit 9553e11325
4 changed files with 140 additions and 0 deletions
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1
arch/x86/kernel/Makefile
View File

@ -102,6 +102,7 @@ obj-$(CONFIG_OLPC) += olpc.o
# 64 bit specific files
ifeq ($(CONFIG_X86_64),y)
obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o tlb_uv.o
obj-y += bios_uv.o
obj-y += genx2apic_cluster.o
obj-y += genx2apic_phys.o
obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o

48
arch/x86/kernel/bios_uv.c Normal file
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@ -0,0 +1,48 @@
/*
* BIOS run time interface routines.
*
* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
*
* 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
*/
#include <asm/uv/bios.h>
const char *
x86_bios_strerror(long status)
{
const char *str;
switch (status) {
case 0: str = "Call completed without error"; break;
case -1: str = "Not implemented"; break;
case -2: str = "Invalid argument"; break;
case -3: str = "Call completed with error"; break;
default: str = "Unknown BIOS status code"; break;
}
return str;
}
long
x86_bios_freq_base(unsigned long which, unsigned long *ticks_per_second,
unsigned long *drift_info)
{
struct uv_bios_retval isrv;
BIOS_CALL(isrv, BIOS_FREQ_BASE, which, 0, 0, 0, 0, 0, 0);
*ticks_per_second = isrv.v0;
*drift_info = isrv.v1;
return isrv.status;
}
EXPORT_SYMBOL_GPL(x86_bios_freq_base);

23
arch/x86/kernel/genx2apic_uv_x.c
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@ -25,6 +25,7 @@
#include <asm/pgtable.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
#include <asm/uv/bios.h>
DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
@ -41,6 +42,9 @@ EXPORT_SYMBOL_GPL(uv_cpu_to_blade);
short uv_possible_blades;
EXPORT_SYMBOL_GPL(uv_possible_blades);
unsigned long sn_rtc_cycles_per_second;
EXPORT_SYMBOL(sn_rtc_cycles_per_second);
/* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
static cpumask_t uv_target_cpus(void)
@ -306,6 +310,23 @@ static __init void map_mmioh_high(int max_pnode)
map_high("MMIOH", mmioh.s.base, shift, map_uc);
}
static __init void uv_rtc_init(void)
{
long status, ticks_per_sec, drift;
status =
x86_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,
&drift);
if (status != 0 || ticks_per_sec < 100000) {
printk(KERN_WARNING
"unable to determine platform RTC clock frequency, "
"guessing.\n");
/* BIOS gives wrong value for clock freq. so guess */
sn_rtc_cycles_per_second = 1000000000000UL / 30000UL;
} else
sn_rtc_cycles_per_second = ticks_per_sec;
}
static __init void uv_system_init(void)
{
union uvh_si_addr_map_config_u m_n_config;
@ -360,6 +381,8 @@ static __init void uv_system_init(void)
gnode_upper = (((unsigned long)node_id.s.node_id) &
~((1 << n_val) - 1)) << m_val;
uv_rtc_init();
for_each_present_cpu(cpu) {
nid = cpu_to_node(cpu);
pnode = uv_apicid_to_pnode(per_cpu(x86_cpu_to_apicid, cpu));

68
include/asm-x86/uv/bios.h Normal file
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@ -0,0 +1,68 @@
#ifndef _ASM_X86_BIOS_H
#define _ASM_X86_BIOS_H
/*
* BIOS layer definitions.
*
* Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
*
* 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
*/
#include <linux/rtc.h>
#define BIOS_FREQ_BASE 0x01000001
enum {
BIOS_FREQ_BASE_PLATFORM = 0,
BIOS_FREQ_BASE_INTERVAL_TIMER = 1,
BIOS_FREQ_BASE_REALTIME_CLOCK = 2
};
# define BIOS_CALL(result, a0, a1, a2, a3, a4, a5, a6, a7) \
do { \
/* XXX - the real call goes here */ \
result.status = BIOS_STATUS_UNIMPLEMENTED; \
isrv.v0 = 0; \
isrv.v1 = 0; \
} while (0)
enum {
BIOS_STATUS_SUCCESS = 0,
BIOS_STATUS_UNIMPLEMENTED = -1,
BIOS_STATUS_EINVAL = -2,
BIOS_STATUS_ERROR = -3
};
struct uv_bios_retval {
/*
* A zero status value indicates call completed without error.
* A negative status value indicates reason of call failure.
* A positive status value indicates success but an
* informational value should be printed (e.g., "reboot for
* change to take effect").
*/
s64 status;
u64 v0;
u64 v1;
u64 v2;
};
extern long
x86_bios_freq_base(unsigned long which, unsigned long *ticks_per_second,
unsigned long *drift_info);
extern const char *x86_bios_strerror(long status);
#endif /* _ASM_X86_BIOS_H */