forked from Minki/linux
333344d943
Only NUMAQ does something substantial here, because it initializes via NMIs (not via INIT as standard SMP startup) - so it needs to reset the APIC. - extend the generic code to handle NULL methods - clear out dummy methods and replace them with NULL - clean up: remove wrapper macros, etc. Signed-off-by: Ingo Molnar <mingo@elte.hu>
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
#ifndef __ASM_NUMAQ_WAKECPU_H
|
|
#define __ASM_NUMAQ_WAKECPU_H
|
|
|
|
/* This file copes with machines that wakeup secondary CPUs by NMIs */
|
|
|
|
#define NUMAQ_TRAMPOLINE_PHYS_LOW (0x8)
|
|
#define NUMAQ_TRAMPOLINE_PHYS_HIGH (0xa)
|
|
|
|
/*
|
|
* Because we use NMIs rather than the INIT-STARTUP sequence to
|
|
* bootstrap the CPUs, the APIC may be in a weird state. Kick it:
|
|
*/
|
|
static inline void numaq_smp_callin_clear_local_apic(void)
|
|
{
|
|
clear_local_APIC();
|
|
}
|
|
|
|
static inline void store_NMI_vector(unsigned short *high, unsigned short *low)
|
|
{
|
|
printk("Storing NMI vector\n");
|
|
*high =
|
|
*((volatile unsigned short *)phys_to_virt(NUMAQ_TRAMPOLINE_PHYS_HIGH));
|
|
*low =
|
|
*((volatile unsigned short *)phys_to_virt(NUMAQ_TRAMPOLINE_PHYS_LOW));
|
|
}
|
|
|
|
static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
|
|
{
|
|
printk("Restoring NMI vector\n");
|
|
*((volatile unsigned short *)phys_to_virt(NUMAQ_TRAMPOLINE_PHYS_HIGH)) =
|
|
*high;
|
|
*((volatile unsigned short *)phys_to_virt(NUMAQ_TRAMPOLINE_PHYS_LOW)) =
|
|
*low;
|
|
}
|
|
|
|
static inline void inquire_remote_apic(int apicid)
|
|
{
|
|
}
|
|
|
|
#endif /* __ASM_NUMAQ_WAKECPU_H */
|