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Commit 922402f1 authored by Russ Anderson's avatar Russ Anderson Committed by Ingo Molnar
Browse files

x86: Add UV partition call v4 



Add a bios call to return partitioning related info.

Signed-off-by: default avatarRuss Anderson <rja@sgi.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 7f594232

arch/x86/kernel/bios_uv.c

+39 −5
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <asm/efi.h>

#include <linux/io.h>

#include <asm/uv/bios.h>

#include <asm/uv/uv_hub.h>



struct uv_systab uv_systab;
@@ -65,14 +66,47 @@ s64 uv_bios_call_reentrant(enum uv_bios_cmd which, u64 a1, u64 a2, u64 a3, 
	return ret;

}



long

x86_bios_freq_base(unsigned long clock_type, unsigned long *ticks_per_second,

					unsigned long *drift_info)



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(x86_bios_freq_base);

EXPORT_SYMBOL_GPL(uv_bios_freq_base);





#ifdef CONFIG_EFI

arch/x86/kernel/genx2apic_uv_x.c

+8 −6
Original line number Diff line number Diff line
@@ -341,12 +341,12 @@ static __init void map_mmioh_high(int max_pnode) 


static __init void uv_rtc_init(void)

{

	long status, ticks_per_sec, drift;

	long status;

	u64 ticks_per_sec;



	status =

	    x86_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK, &ticks_per_sec,

					&drift);

	if (status != 0 || ticks_per_sec < 100000) {

	status = uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK,

					&ticks_per_sec);

	if (status != BIOS_STATUS_SUCCESS || ticks_per_sec < 100000) {

		printk(KERN_WARNING

			"unable to determine platform RTC clock frequency, "

			"guessing.\n");
@@ -428,6 +428,8 @@ void __init uv_system_init(void) 
		       ~((1 << n_val) - 1)) << m_val;



	uv_bios_init();

	uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,

			    &uv_coherency_id, &uv_region_size);

	uv_rtc_init();



	for_each_present_cpu(cpu) {
@@ -449,7 +451,7 @@ void __init uv_system_init(void) 
		uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;

		uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;

		uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;

		uv_cpu_hub_info(cpu)->coherency_domain_number = 0;/* ZZZ */

		uv_cpu_hub_info(cpu)->coherency_domain_number = uv_coherency_id;

		uv_node_to_blade[nid] = blade;

		uv_cpu_to_blade[cpu] = blade;

		max_pnode = max(pnode, max_pnode);

include/asm-x86/uv/bios.h

+19 −3
Original line number Diff line number Diff line
@@ -61,6 +61,16 @@ enum { 
	BIOS_FREQ_BASE_REALTIME_CLOCK = 2

};



union partition_info_u {

	u64	val;

	struct {

		u64	hub_version	:  8,

			partition_id	: 16,

			coherence_id	: 16,

			region_size	: 24;

	};

};



/*

 * bios calls have 6 parameters

 */
@@ -68,10 +78,16 @@ extern s64 uv_bios_call(enum uv_bios_cmd, u64, u64, u64, u64, u64); 
extern s64 uv_bios_call_irqsave(enum uv_bios_cmd, u64, u64, u64, u64, u64);

extern s64 uv_bios_call_reentrant(enum uv_bios_cmd, u64, u64, u64, u64, u64);



extern s64 uv_bios_get_sn_info(int, int *, long *, long *, long *);

extern s64 uv_bios_freq_base(u64, u64 *);



extern void uv_bios_init(void);



extern long

x86_bios_freq_base(unsigned long which, unsigned long *ticks_per_second,

		   unsigned long *drift_info);

extern int uv_type;

extern long sn_partition_id;

extern long uv_coherency_id;

extern long uv_region_size;

#define partition_coherence_id()	(uv_coherency_id)





#endif /* ASM_X86__UV__BIOS_H */