diff options
| author | Wim Van Sebroeck <wim@iguana.be> | 2007-05-11 19:03:13 +0000 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2007-05-11 19:03:13 +0000 |
| commit | 5c34202b8bf942da411b6599668a76b07449bbfd (patch) | |
| tree | 5719c361321eaddc8e4f1b0c8a7994f0e9a6fdd3 /arch/i386/kernel/apic.c | |
| parent | 0d4804b31f91cfbcff6d62af0bc09a893a1c8ae0 (diff) | |
| parent | 1f8a6b658a943b4f04a1fc7b3a420360202c86cd (diff) | |
Merge /pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/i386/kernel/apic.c')
| -rw-r--r-- | arch/i386/kernel/apic.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/i386/kernel/apic.c b/arch/i386/kernel/apic.c index 93aa911646a..67824f3bb97 100644 --- a/arch/i386/kernel/apic.c +++ b/arch/i386/kernel/apic.c @@ -19,7 +19,6 @@ #include <linux/mm.h> #include <linux/delay.h> #include <linux/bootmem.h> -#include <linux/smp_lock.h> #include <linux/interrupt.h> #include <linux/mc146818rtc.h> #include <linux/kernel_stat.h> @@ -129,6 +128,28 @@ static int modern_apic(void) return lapic_get_version() >= 0x14; } +void apic_wait_icr_idle(void) +{ + while (apic_read(APIC_ICR) & APIC_ICR_BUSY) + cpu_relax(); +} + +unsigned long safe_apic_wait_icr_idle(void) +{ + unsigned long send_status; + int timeout; + + timeout = 0; + do { + send_status = apic_read(APIC_ICR) & APIC_ICR_BUSY; + if (!send_status) + break; + udelay(100); + } while (timeout++ < 1000); + + return send_status; +} + /** * enable_NMI_through_LVT0 - enable NMI through local vector table 0 */ |