iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86: let 32bit use apic_ops too

Browse Source 
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu 2008-07-11 18:41:54 -07:00 committed by Ingo Molnar
parent af9d13887f
commit c535b6a1a6
2 changed files with 33 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
arch/x86/kernel/apic_32.c
View File

@ -145,19 +145,13 @@ static int modern_apic(void)
return lapic_get_version() >= 0x14;
}
void apic_icr_write(u32 low, u32 id)
{
apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(id));
apic_write_around(APIC_ICR, low);
}
void apic_wait_icr_idle(void)
void xapic_wait_icr_idle(void)
{
while (apic_read(APIC_ICR) & APIC_ICR_BUSY)
cpu_relax();
}
u32 safe_apic_wait_icr_idle(void)
u32 safe_xapic_wait_icr_idle(void)
{
u32 send_status;
int timeout;
@ -173,6 +167,35 @@ u32 safe_apic_wait_icr_idle(void)
return send_status;
}
void xapic_icr_write(u32 low, u32 id)
{
apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(id));
apic_write_around(APIC_ICR, low);
}
u64 xapic_icr_read(void)
{
u32 icr1, icr2;
icr2 = apic_read(APIC_ICR2);
icr1 = apic_read(APIC_ICR);
return icr1 | ((u64)icr2 << 32);
}
static struct apic_ops xapic_ops = {
.read = native_apic_mem_read,
.write = native_apic_mem_write,
.write_atomic = native_apic_mem_write_atomic,
.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);
/**
* enable_NMI_through_LVT0 - enable NMI through local vector table 0
*/

13
include/asm-x86/apic.h
View File

@ -49,11 +49,6 @@ extern int disable_apic;
#ifdef CONFIG_PARAVIRT
#include <asm/paravirt.h>
#else
#ifndef CONFIG_X86_64
#define apic_write native_apic_mem_write
#define apic_write_atomic native_apic_mem_write_atomic
#define apic_read native_apic_mem_read
#endif
#define setup_boot_clock setup_boot_APIC_clock
#define setup_secondary_clock setup_secondary_APIC_clock
#endif
@ -95,16 +90,13 @@ static inline u32 native_apic_msr_read(u32 reg)
return low;
}
#ifdef CONFIG_X86_32
extern void apic_wait_icr_idle(void);
extern u32 safe_apic_wait_icr_idle(void);
extern void apic_icr_write(u32 low, u32 id);
#else
#ifndef CONFIG_X86_32
extern int x2apic, x2apic_preenabled;
extern void check_x2apic(void);
extern void enable_x2apic(void);
extern void enable_IR_x2apic(void);
extern void x2apic_icr_write(u32 low, u32 id);
#endif
struct apic_ops {
u32 (*read)(u32 reg);
@ -125,7 +117,6 @@ extern struct apic_ops *apic_ops;
#define apic_icr_write (apic_ops->icr_write)
#define apic_wait_icr_idle (apic_ops->wait_icr_idle)
#define safe_apic_wait_icr_idle (apic_ops->safe_wait_icr_idle)
#endif
extern int get_physical_broadcast(void);