Differential D14633 Diff 40391 sys/i386/i386/apic_vector.s

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sys/i386/i386/apic_vector.s

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	/*			/*
	* Interrupt entry points for external interrupts triggered by I/O APICs			* Interrupt entry points for external interrupts triggered by I/O APICs
	* as well as IPI handlers.			* as well as IPI handlers.
	*/			*/

	#include "opt_smp.h"			#include "opt_smp.h"

	#include <machine/asmacros.h>			#include <machine/asmacros.h>
				#include <machine/psl.h>
	#include <machine/specialreg.h>			#include <machine/specialreg.h>
	#include <x86/apicreg.h>			#include <x86/apicreg.h>

	#include "assym.s"			#include "assym.s"

	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	/* End Of Interrupt to APIC */			/* End Of Interrupt to APIC */
	Show All 12 Lines

	/*			/*
	* I/O Interrupt Entry Point. Rather than having one entry point for			* I/O Interrupt Entry Point. Rather than having one entry point for
	* each interrupt source, we use one entry point for each 32-bit word			* each interrupt source, we use one entry point for each 32-bit word
	* in the ISR. The handler determines the highest bit set in the ISR,			* in the ISR. The handler determines the highest bit set in the ISR,
	* translates that into a vector, and passes the vector to the			* translates that into a vector, and passes the vector to the
	* lapic_handle_intr() function.			* lapic_handle_intr() function.
	*/			*/
	#define ISR_VEC(index, vec_name) \			.macro ISR_VEC index, vec_name
	.text ; \			.text
	SUPERALIGN_TEXT ; \			SUPERALIGN_TEXT
	IDTVEC(vec_name ## _pti) ; \			.globl X\()\vec_name\()_pti, X\()\vec_name
	IDTVEC(vec_name) ; \
	PUSH_FRAME ; \			X\()\vec_name\()_pti:
	SET_KERNEL_SREGS ; \			X\()\vec_name:
	cld ; \			PUSH_FRAME
	FAKE_MCOUNT(TF_EIP(%esp)) ; \			SET_KERNEL_SREGS
	cmpl $0,x2apic_mode ; \			cld
	je 1f ; \			KENTER
	movl $(MSR_APIC_ISR0 + index),%ecx ; \			FAKE_MCOUNT(TF_EIP(%esp))
	rdmsr ; \			cmpl $0,x2apic_mode
	jmp 2f ; \			je 2f
	1: ; \			movl $(MSR_APIC_ISR0 + \index),%ecx
	movl lapic_map, %edx ;/* pointer to local APIC */ \			rdmsr
	movl LA_ISR + 16 * (index)(%edx), %eax ; /* load ISR */ \			jmp 3f
	2: ; \			2:
	bsrl %eax, %eax ; /* index of highest set bit in ISR */ \			movl lapic_map, %edx /* pointer to local APIC */
	jz 3f ; \			movl LA_ISR + 16 * \index(%edx), %eax /* load ISR */
	addl $(32 * index),%eax ; \			3:
	pushl %esp ; \			bsrl %eax, %eax /* index of highest set bit in ISR */
	pushl %eax ; /* pass the IRQ */ \			jz 4f
	call lapic_handle_intr ; \			addl $(32 * \index),%eax
	addl $8, %esp ; /* discard parameter */ \			pushl %esp
	3: ; \			pushl %eax /* pass the IRQ */
	MEXITCOUNT ; \			movl $lapic_handle_intr, %eax
				call *%eax
				addl $8, %esp /* discard parameter */
				4:
				MEXITCOUNT
	jmp doreti			jmp doreti
				.endm

	/*			/*
	* Handle "spurious INTerrupts".			* Handle "spurious INTerrupts".
	* Notes:			* Notes:
	* This is different than the "spurious INTerrupt" generated by an			* This is different than the "spurious INTerrupt" generated by an
	* 8259 PIC for missing INTs. See the APIC documentation for details.			* 8259 PIC for missing INTs. See the APIC documentation for details.
	* This routine should NOT do an 'EOI' cycle.			* This routine should NOT do an 'EOI' cycle.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(spuriousint)			IDTVEC(spuriousint)

	/* No EOI cycle used here */			/* No EOI cycle used here */

	iret			iret

	ISR_VEC(1, apic_isr1)			ISR_VEC 1, apic_isr1
	ISR_VEC(2, apic_isr2)			ISR_VEC 2, apic_isr2
	ISR_VEC(3, apic_isr3)			ISR_VEC 3, apic_isr3
	ISR_VEC(4, apic_isr4)			ISR_VEC 4, apic_isr4
	ISR_VEC(5, apic_isr5)			ISR_VEC 5, apic_isr5
	ISR_VEC(6, apic_isr6)			ISR_VEC 6, apic_isr6
	ISR_VEC(7, apic_isr7)			ISR_VEC 7, apic_isr7

	/*			/*
	* Local APIC periodic timer handler.			* Local APIC periodic timer handler.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(timerint_pti)			IDTVEC(timerint_pti)
	IDTVEC(timerint)			IDTVEC(timerint)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	FAKE_MCOUNT(TF_EIP(%esp))			FAKE_MCOUNT(TF_EIP(%esp))
	pushl %esp			pushl %esp
	call lapic_handle_timer			movl $lapic_handle_timer, %eax
				call *%eax
	add $4, %esp			add $4, %esp
	MEXITCOUNT			MEXITCOUNT
	jmp doreti			jmp doreti

	/*			/*
	* Local APIC CMCI handler.			* Local APIC CMCI handler.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(cmcint_pti)			IDTVEC(cmcint_pti)
	IDTVEC(cmcint)			IDTVEC(cmcint)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	FAKE_MCOUNT(TF_EIP(%esp))			FAKE_MCOUNT(TF_EIP(%esp))
	call lapic_handle_cmc			movl $lapic_handle_cmc, %eax
				call *%eax
	MEXITCOUNT			MEXITCOUNT
	jmp doreti			jmp doreti

	/*			/*
	* Local APIC error interrupt handler.			* Local APIC error interrupt handler.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(errorint_pti)			IDTVEC(errorint_pti)
	IDTVEC(errorint)			IDTVEC(errorint)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	FAKE_MCOUNT(TF_EIP(%esp))			FAKE_MCOUNT(TF_EIP(%esp))
	call lapic_handle_error			movl $lapic_handle_error, %eax
				call *%eax
	MEXITCOUNT			MEXITCOUNT
	jmp doreti			jmp doreti

	#ifdef XENHVM			#ifdef XENHVM
	/*			/*
	* Xen event channel upcall interrupt handler.			* Xen event channel upcall interrupt handler.
	* Only used when the hypervisor supports direct vector callbacks.			* Only used when the hypervisor supports direct vector callbacks.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(xen_intr_upcall)			IDTVEC(xen_intr_upcall)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	FAKE_MCOUNT(TF_EIP(%esp))			FAKE_MCOUNT(TF_EIP(%esp))
	pushl %esp			pushl %esp
	call xen_intr_handle_upcall			movl $xen_intr_handle_upcall, %eax
				call *%eax
	add $4, %esp			add $4, %esp
	MEXITCOUNT			MEXITCOUNT
	jmp doreti			jmp doreti
	#endif			#endif

	#ifdef SMP			#ifdef SMP
	/*			/*
	* Global address space TLB shootdown.			* Global address space TLB shootdown.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	invltlb_ret:			invltlb_ret:
	call as_lapic_eoi			call as_lapic_eoi
	jmp doreti			jmp doreti

	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(invltlb)			IDTVEC(invltlb)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	call invltlb_handler			movl $invltlb_handler, %eax
				call *%eax
	jmp invltlb_ret			jmp invltlb_ret

	/*			/*
	* Single page TLB shootdown			* Single page TLB shootdown
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(invlpg)			IDTVEC(invlpg)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	call invlpg_handler			movl $invlpg_handler, %eax
				call *%eax
	jmp invltlb_ret			jmp invltlb_ret

	/*			/*
	* Page range TLB shootdown.			* Page range TLB shootdown.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(invlrng)			IDTVEC(invlrng)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	call invlrng_handler			movl $invlrng_handler, %eax
				call *%eax
	jmp invltlb_ret			jmp invltlb_ret

	/*			/*
	* Invalidate cache.			* Invalidate cache.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(invlcache)			IDTVEC(invlcache)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	call invlcache_handler			movl $invlcache_handler, %eax
				call *%eax
	jmp invltlb_ret			jmp invltlb_ret

	/*			/*
	* Handler for IPIs sent via the per-cpu IPI bitmap.			* Handler for IPIs sent via the per-cpu IPI bitmap.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(ipi_intr_bitmap_handler)			IDTVEC(ipi_intr_bitmap_handler)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	call as_lapic_eoi			call as_lapic_eoi

	FAKE_MCOUNT(TF_EIP(%esp))			FAKE_MCOUNT(TF_EIP(%esp))
				movl $ipi_bitmap_handler, %eax
	call ipi_bitmap_handler			call *%eax
	MEXITCOUNT			MEXITCOUNT
	jmp doreti			jmp doreti

	/*			/*
	* Executed by a CPU when it receives an IPI_STOP from another CPU.			* Executed by a CPU when it receives an IPI_STOP from another CPU.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(cpustop)			IDTVEC(cpustop)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	call as_lapic_eoi			call as_lapic_eoi
	call cpustop_handler			movl $cpustop_handler, %eax
				call *%eax
	jmp doreti			jmp doreti

	/*			/*
	* Executed by a CPU when it receives an IPI_SUSPEND from another CPU.			* Executed by a CPU when it receives an IPI_SUSPEND from another CPU.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(cpususpend)			IDTVEC(cpususpend)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	call as_lapic_eoi			call as_lapic_eoi
	call cpususpend_handler			movl $cpususpend_handler, %eax
				call *%eax
	jmp doreti			jmp doreti

	/*			/*
	* Executed by a CPU when it receives a RENDEZVOUS IPI from another CPU.			* Executed by a CPU when it receives a RENDEZVOUS IPI from another CPU.
	*			*
	* - Calls the generic rendezvous action function.			* - Calls the generic rendezvous action function.
	*/			*/
	.text			.text
	SUPERALIGN_TEXT			SUPERALIGN_TEXT
	IDTVEC(rendezvous)			IDTVEC(rendezvous)
	PUSH_FRAME			PUSH_FRAME
	SET_KERNEL_SREGS			SET_KERNEL_SREGS
	cld			cld
				KENTER
	#ifdef COUNT_IPIS			#ifdef COUNT_IPIS
	movl PCPU(CPUID), %eax			movl PCPU(CPUID), %eax
	movl ipi_rendezvous_counts(,%eax,4), %eax			movl ipi_rendezvous_counts(,%eax,4), %eax
	incl (%eax)			incl (%eax)
	#endif			#endif
	call smp_rendezvous_action			movl $smp_rendezvous_action, %eax
				call *%eax
	call as_lapic_eoi			call as_lapic_eoi
	jmp doreti			jmp doreti

	#endif /* SMP */			#endif /* SMP */