Commit 66666e50 authored by Jack Steiner's avatar Jack Steiner Committed by Linus Torvalds
Browse files

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: default avatarJack 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c7296700

arch/ia64/include/asm/uv/uv_hub.h

+6 −0
Original line number Diff line number Diff line
@@ -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__ */

arch/x86/include/asm/uv/uv_hub.h

+12 −0
Original line number Diff line number Diff line
@@ -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 */

arch/x86/kernel/apic/x2apic_uv_x.c

+2 −7
Original line number Diff line number Diff line
@@ -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)

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