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sgi-gru: add macros for using the UV hub to send interrupts 

Add macros for using the UV hub to send interrupts.  Change the IPI code
to use these macros.  These macros will also be used in additional patches
that will follow.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jack Steiner 2009-04-02 16:59:03 -07:00 committed by Linus Torvalds
parent c7296700ed
commit 66666e50fc
3 changed files with 20 additions and 7 deletions
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6
arch/ia64/include/asm/uv/uv_hub.h
View File

@ -305,5 +305,11 @@ static inline int uv_num_possible_blades(void)
return 1;
}
static inline void uv_hub_send_ipi(int pnode, int apicid, int vector)
{
/* not currently needed on ia64 */
}
#endif /* __ASM_IA64_UV_HUB__ */

12
arch/x86/include/asm/uv/uv_hub.h
View File

@ -17,6 +17,7 @@
#include <linux/timer.h>
#include <asm/types.h>
#include <asm/percpu.h>
#include <asm/uv/uv_mmrs.h>
/*
@ -398,6 +399,7 @@ static inline void uv_set_scir_bits(unsigned char value)
uv_write_local_mmr8(uv_hub_info->scir.offset, value);
}
}
static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value)
{
if (uv_cpu_hub_info(cpu)->scir.state != value) {
@ -406,5 +408,15 @@ static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value)
}
}
static inline void uv_hub_send_ipi(int pnode, int apicid, int vector)
{
unsigned long val;
val = (1UL << UVH_IPI_INT_SEND_SHFT) |
((apicid & 0x3f) << UVH_IPI_INT_APIC_ID_SHFT) |
(vector << UVH_IPI_INT_VECTOR_SHFT);
uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
}
#endif /* CONFIG_X86_64 */
#endif /* _ASM_X86_UV_UV_HUB_H */

9
arch/x86/kernel/apic/x2apic_uv_x.c
View File

@ -118,17 +118,12 @@ static int uv_wakeup_secondary(int phys_apicid, unsigned long start_rip)
static void uv_send_IPI_one(int cpu, int vector)
{
unsigned long val, apicid;
unsigned long apicid;
int pnode;
apicid = per_cpu(x86_cpu_to_apicid, cpu);
pnode = uv_apicid_to_pnode(apicid);
val = (1UL << UVH_IPI_INT_SEND_SHFT) |
(apicid << UVH_IPI_INT_APIC_ID_SHFT) |
(vector << UVH_IPI_INT_VECTOR_SHFT);
uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
uv_hub_send_ipi(pnode, apicid, vector);
}
static void uv_send_IPI_mask(const struct cpumask *mask, int vector)