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---
r: 136869
b: refs/heads/master
c: c1eeb2d
h: refs/heads/master
i:
  136867: 3f2cd8b
v: v3
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Yinghai Lu authored and Ingo Molnar committed Feb 17, 2009
1 parent 6e2e845 commit 82c6a6e
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Showing 25 changed files with 206 additions and 163 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 06cd9a7dc8a58186060a91b6ddc031057435fd34
refs/heads/master: c1eeb2de41d7015678bdd412b48a5f071b84e29a
97 changes: 31 additions & 66 deletions trunk/arch/x86/include/asm/apic.h
Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,12 @@ static inline u32 native_apic_mem_read(u32 reg)
return *((volatile u32 *)(APIC_BASE + reg));
}

extern void native_apic_wait_icr_idle(void);
extern u32 native_safe_apic_wait_icr_idle(void);
extern void native_apic_icr_write(u32 low, u32 id);
extern u64 native_apic_icr_read(void);

#ifdef CONFIG_X86_X2APIC
static inline void native_apic_msr_write(u32 reg, u32 v)
{
if (reg == APIC_DFR || reg == APIC_ID || reg == APIC_LDR ||
Expand All @@ -112,7 +118,31 @@ static inline u32 native_apic_msr_read(u32 reg)
return low;
}

#ifdef CONFIG_X86_X2APIC
static inline void native_x2apic_wait_icr_idle(void)
{
/* no need to wait for icr idle in x2apic */
return;
}

static inline u32 native_safe_x2apic_wait_icr_idle(void)
{
/* no need to wait for icr idle in x2apic */
return 0;
}

static inline void native_x2apic_icr_write(u32 low, u32 id)
{
wrmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), ((__u64) id) << 32 | low);
}

static inline u64 native_x2apic_icr_read(void)
{
unsigned long val;

rdmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), val);
return val;
}

extern int x2apic;
extern void check_x2apic(void);
extern void enable_x2apic(void);
Expand Down Expand Up @@ -146,47 +176,6 @@ static inline int x2apic_enabled(void)
}
#endif

struct apic_ops {
u32 (*read)(u32 reg);
void (*write)(u32 reg, u32 v);
u64 (*icr_read)(void);
void (*icr_write)(u32 low, u32 high);
void (*wait_icr_idle)(void);
u32 (*safe_wait_icr_idle)(void);
};

extern struct apic_ops *apic_ops;

static inline u32 apic_read(u32 reg)
{
return apic_ops->read(reg);
}

static inline void apic_write(u32 reg, u32 val)
{
apic_ops->write(reg, val);
}

static inline u64 apic_icr_read(void)
{
return apic_ops->icr_read();
}

static inline void apic_icr_write(u32 low, u32 high)
{
apic_ops->icr_write(low, high);
}

static inline void apic_wait_icr_idle(void)
{
apic_ops->wait_icr_idle();
}

static inline u32 safe_apic_wait_icr_idle(void)
{
return apic_ops->safe_wait_icr_idle();
}

extern int get_physical_broadcast(void);

#ifdef CONFIG_X86_X2APIC
Expand All @@ -197,18 +186,6 @@ static inline void ack_x2APIC_irq(void)
}
#endif


static inline void ack_APIC_irq(void)
{
/*
* ack_APIC_irq() actually gets compiled as a single instruction
* ... yummie.
*/

/* Docs say use 0 for future compatibility */
apic_write(APIC_EOI, 0);
}

extern int lapic_get_maxlvt(void);
extern void clear_local_APIC(void);
extern void connect_bsp_APIC(void);
Expand Down Expand Up @@ -256,18 +233,6 @@ static inline void disable_local_APIC(void) { }
#define SET_APIC_ID(x) (apic->set_apic_id(x))
#else

#ifdef CONFIG_X86_LOCAL_APIC
static inline unsigned default_get_apic_id(unsigned long x)
{
unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR));

if (APIC_XAPIC(ver))
return (x >> 24) & 0xFF;
else
return (x >> 24) & 0x0F;
}
#endif

#endif

#endif /* _ASM_X86_APIC_H */
61 changes: 61 additions & 0 deletions trunk/arch/x86/include/asm/genapic.h
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@

#include <asm/mpspec.h>
#include <asm/atomic.h>
#include <asm/apic.h>

/*
* Copyright 2004 James Cleverdon, IBM.
Expand Down Expand Up @@ -83,10 +84,70 @@ struct genapic {
void (*smp_callin_clear_local_apic)(void);
void (*store_NMI_vector)(unsigned short *high, unsigned short *low);
void (*inquire_remote_apic)(int apicid);

/* apic ops */
u32 (*read)(u32 reg);
void (*write)(u32 reg, u32 v);
u64 (*icr_read)(void);
void (*icr_write)(u32 low, u32 high);
void (*wait_icr_idle)(void);
u32 (*safe_wait_icr_idle)(void);
};

extern struct genapic *apic;

static inline u32 apic_read(u32 reg)
{
return apic->read(reg);
}

static inline void apic_write(u32 reg, u32 val)
{
apic->write(reg, val);
}

static inline u64 apic_icr_read(void)
{
return apic->icr_read();
}

static inline void apic_icr_write(u32 low, u32 high)
{
apic->icr_write(low, high);
}

static inline void apic_wait_icr_idle(void)
{
apic->wait_icr_idle();
}

static inline u32 safe_apic_wait_icr_idle(void)
{
return apic->safe_wait_icr_idle();
}


static inline void ack_APIC_irq(void)
{
/*
* ack_APIC_irq() actually gets compiled as a single instruction
* ... yummie.
*/

/* Docs say use 0 for future compatibility */
apic_write(APIC_EOI, 0);
}

static inline unsigned default_get_apic_id(unsigned long x)
{
unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR));

if (APIC_XAPIC(ver))
return (x >> 24) & 0xFF;
else
return (x >> 24) & 0x0F;
}

/*
* Warm reset vector default position:
*/
Expand Down
63 changes: 4 additions & 59 deletions trunk/arch/x86/kernel/apic.c
Original file line number Diff line number Diff line change
Expand Up @@ -210,18 +210,13 @@ static int modern_apic(void)
return lapic_get_version() >= 0x14;
}

/*
* Paravirt kernels also might be using these below ops. So we still
* use generic apic_read()/apic_write(), which might be pointing to different
* ops in PARAVIRT case.
*/
void xapic_wait_icr_idle(void)
void native_apic_wait_icr_idle(void)
{
while (apic_read(APIC_ICR) & APIC_ICR_BUSY)
cpu_relax();
}

u32 safe_xapic_wait_icr_idle(void)
u32 native_safe_apic_wait_icr_idle(void)
{
u32 send_status;
int timeout;
Expand All @@ -237,13 +232,13 @@ u32 safe_xapic_wait_icr_idle(void)
return send_status;
}

void xapic_icr_write(u32 low, u32 id)
void native_apic_icr_write(u32 low, u32 id)
{
apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(id));
apic_write(APIC_ICR, low);
}

static u64 xapic_icr_read(void)
u64 native_apic_icr_read(void)
{
u32 icr1, icr2;

Expand All @@ -253,54 +248,6 @@ static u64 xapic_icr_read(void)
return icr1 | ((u64)icr2 << 32);
}

static struct apic_ops xapic_ops = {
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.icr_read = xapic_icr_read,
.icr_write = xapic_icr_write,
.wait_icr_idle = xapic_wait_icr_idle,
.safe_wait_icr_idle = safe_xapic_wait_icr_idle,
};

struct apic_ops __read_mostly *apic_ops = &xapic_ops;
EXPORT_SYMBOL_GPL(apic_ops);

#ifdef CONFIG_X86_X2APIC
static void x2apic_wait_icr_idle(void)
{
/* no need to wait for icr idle in x2apic */
return;
}

static u32 safe_x2apic_wait_icr_idle(void)
{
/* no need to wait for icr idle in x2apic */
return 0;
}

void x2apic_icr_write(u32 low, u32 id)
{
wrmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), ((__u64) id) << 32 | low);
}

static u64 x2apic_icr_read(void)
{
unsigned long val;

rdmsrl(APIC_BASE_MSR + (APIC_ICR >> 4), val);
return val;
}

static struct apic_ops x2apic_ops = {
.read = native_apic_msr_read,
.write = native_apic_msr_write,
.icr_read = x2apic_icr_read,
.icr_write = x2apic_icr_write,
.wait_icr_idle = x2apic_wait_icr_idle,
.safe_wait_icr_idle = safe_x2apic_wait_icr_idle,
};
#endif

/**
* enable_NMI_through_LVT0 - enable NMI through local vector table 0
*/
Expand Down Expand Up @@ -1329,7 +1276,6 @@ void check_x2apic(void)
if (msr & X2APIC_ENABLE) {
pr_info("x2apic enabled by BIOS, switching to x2apic ops\n");
x2apic_preenabled = x2apic = 1;
apic_ops = &x2apic_ops;
}
}

Expand Down Expand Up @@ -1403,7 +1349,6 @@ void __init enable_IR_x2apic(void)

if (!x2apic) {
x2apic = 1;
apic_ops = &x2apic_ops;
enable_x2apic();
}

Expand Down
7 changes: 7 additions & 0 deletions trunk/arch/x86/kernel/bigsmp_32.c
Original file line number Diff line number Diff line change
Expand Up @@ -263,4 +263,11 @@ struct genapic apic_bigsmp = {
.smp_callin_clear_local_apic = NULL,
.store_NMI_vector = NULL,
.inquire_remote_apic = default_inquire_remote_apic,

.read = native_apic_mem_read,
.write = native_apic_mem_write,
.icr_read = native_apic_icr_read,
.icr_write = native_apic_icr_write,
.wait_icr_idle = native_apic_wait_icr_idle,
.safe_wait_icr_idle = native_safe_apic_wait_icr_idle,
};
2 changes: 1 addition & 1 deletion trunk/arch/x86/kernel/cpu/mcheck/mce_amd_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@
#include <linux/smp.h>
#include <linux/sysdev.h>
#include <linux/sysfs.h>
#include <asm/apic.h>
#include <asm/genapic.h>
#include <asm/mce.h>
#include <asm/msr.h>
#include <asm/percpu.h>
Expand Down
2 changes: 1 addition & 1 deletion trunk/arch/x86/kernel/cpu/mcheck/mce_intel_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
#include <linux/interrupt.h>
#include <linux/percpu.h>
#include <asm/processor.h>
#include <asm/apic.h>
#include <asm/genapic.h>
#include <asm/msr.h>
#include <asm/mce.h>
#include <asm/hw_irq.h>
Expand Down
2 changes: 1 addition & 1 deletion trunk/arch/x86/kernel/cpu/perfctr-watchdog.c
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@
#include <linux/nmi.h>
#include <linux/kprobes.h>

#include <asm/apic.h>
#include <asm/genapic.h>
#include <asm/intel_arch_perfmon.h>

struct nmi_watchdog_ctlblk {
Expand Down
7 changes: 7 additions & 0 deletions trunk/arch/x86/kernel/es7000_32.c
Original file line number Diff line number Diff line change
Expand Up @@ -806,4 +806,11 @@ struct genapic apic_es7000 = {
.smp_callin_clear_local_apic = NULL,
.store_NMI_vector = NULL,
.inquire_remote_apic = default_inquire_remote_apic,

.read = native_apic_mem_read,
.write = native_apic_mem_write,
.icr_read = native_apic_icr_read,
.icr_write = native_apic_icr_write,
.wait_icr_idle = native_apic_wait_icr_idle,
.safe_wait_icr_idle = native_safe_apic_wait_icr_idle,
};
2 changes: 1 addition & 1 deletion trunk/arch/x86/kernel/genapic_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,8 @@
#include <linux/dmar.h>

#include <asm/smp.h>
#include <asm/ipi.h>
#include <asm/genapic.h>
#include <asm/ipi.h>
#include <asm/setup.h>

extern struct genapic apic_flat;
Expand Down
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