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/*- * Copyright (c) 1989, 1990 William F. Jolitz. * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: vector.s, 386BSD 0.1 unknown origin * $FreeBSD: release/9.1.0/sys/i386/i386/apic_vector.s 235796 2012-05-22 17:44:01Z iwasaki $ */ /* * Interrupt entry points for external interrupts triggered by I/O APICs * as well as IPI handlers. */ #include "opt_smp.h" #include <machine/asmacros.h> #include <x86/apicreg.h> #include "assym.s" /* * 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 * in the ISR. The handler determines the highest bit set in the ISR, * translates that into a vector, and passes the vector to the * lapic_handle_intr() function. */ #define ISR_VEC(index, vec_name) \ .text ; \ SUPERALIGN_TEXT ; \ IDTVEC(vec_name) ; \ PUSH_FRAME ; \ SET_KERNEL_SREGS ; \ cld ; \ FAKE_MCOUNT(TF_EIP(%esp)) ; \ movl lapic, %edx ; /* pointer to local APIC */ \ movl LA_ISR + 16 * (index)(%edx), %eax ; /* load ISR */ \ bsrl %eax, %eax ; /* index of highest set bit in ISR */ \ jz 1f ; \ addl $(32 * index),%eax ; \ pushl %esp ; \ pushl %eax ; /* pass the IRQ */ \ call lapic_handle_intr ; \ addl $8, %esp ; /* discard parameter */ \ 1: ; \ MEXITCOUNT ; \ jmp doreti /* * Handle "spurious INTerrupts". * Notes: * This is different than the "spurious INTerrupt" generated by an * 8259 PIC for missing INTs. See the APIC documentation for details. * This routine should NOT do an 'EOI' cycle. */ .text SUPERALIGN_TEXT IDTVEC(spuriousint) /* No EOI cycle used here */ iret ISR_VEC(1, apic_isr1) ISR_VEC(2, apic_isr2) ISR_VEC(3, apic_isr3) ISR_VEC(4, apic_isr4) ISR_VEC(5, apic_isr5) ISR_VEC(6, apic_isr6) ISR_VEC(7, apic_isr7) /* * Local APIC periodic timer handler. */ .text SUPERALIGN_TEXT IDTVEC(timerint) PUSH_FRAME SET_KERNEL_SREGS cld FAKE_MCOUNT(TF_EIP(%esp)) pushl %esp call lapic_handle_timer add $4, %esp MEXITCOUNT jmp doreti /* * Local APIC CMCI handler. */ .text SUPERALIGN_TEXT IDTVEC(cmcint) PUSH_FRAME SET_KERNEL_SREGS cld FAKE_MCOUNT(TF_EIP(%esp)) call lapic_handle_cmc MEXITCOUNT jmp doreti /* * Local APIC error interrupt handler. */ .text SUPERALIGN_TEXT IDTVEC(errorint) PUSH_FRAME SET_KERNEL_SREGS cld FAKE_MCOUNT(TF_EIP(%esp)) call lapic_handle_error MEXITCOUNT jmp doreti #ifdef SMP /* * Global address space TLB shootdown. */ .text SUPERALIGN_TEXT IDTVEC(invltlb) pushl %eax pushl %ds movl $KDSEL, %eax /* Kernel data selector */ movl %eax, %ds #if defined(COUNT_XINVLTLB_HITS) || defined(COUNT_IPIS) pushl %fs movl $KPSEL, %eax /* Private space selector */ movl %eax, %fs movl PCPU(CPUID), %eax popl %fs #ifdef COUNT_XINVLTLB_HITS incl xhits_gbl(,%eax,4) #endif #ifdef COUNT_IPIS movl ipi_invltlb_counts(,%eax,4),%eax incl (%eax) #endif #endif movl %cr3, %eax /* invalidate the TLB */ movl %eax, %cr3 movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ lock incl smp_tlb_wait popl %ds popl %eax iret /* * Single page TLB shootdown */ .text SUPERALIGN_TEXT IDTVEC(invlpg) pushl %eax pushl %ds movl $KDSEL, %eax /* Kernel data selector */ movl %eax, %ds #if defined(COUNT_XINVLTLB_HITS) || defined(COUNT_IPIS) pushl %fs movl $KPSEL, %eax /* Private space selector */ movl %eax, %fs movl PCPU(CPUID), %eax popl %fs #ifdef COUNT_XINVLTLB_HITS incl xhits_pg(,%eax,4) #endif #ifdef COUNT_IPIS movl ipi_invlpg_counts(,%eax,4),%eax incl (%eax) #endif #endif movl smp_tlb_addr1, %eax invlpg (%eax) /* invalidate single page */ movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ lock incl smp_tlb_wait popl %ds popl %eax iret /* * Page range TLB shootdown. */ .text SUPERALIGN_TEXT IDTVEC(invlrng) pushl %eax pushl %edx pushl %ds movl $KDSEL, %eax /* Kernel data selector */ movl %eax, %ds #if defined(COUNT_XINVLTLB_HITS) || defined(COUNT_IPIS) pushl %fs movl $KPSEL, %eax /* Private space selector */ movl %eax, %fs movl PCPU(CPUID), %eax popl %fs #ifdef COUNT_XINVLTLB_HITS incl xhits_rng(,%eax,4) #endif #ifdef COUNT_IPIS movl ipi_invlrng_counts(,%eax,4),%eax incl (%eax) #endif #endif movl smp_tlb_addr1, %edx movl smp_tlb_addr2, %eax 1: invlpg (%edx) /* invalidate single page */ addl $PAGE_SIZE, %edx cmpl %eax, %edx jb 1b movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ lock incl smp_tlb_wait popl %ds popl %edx popl %eax iret /* * Invalidate cache. */ .text SUPERALIGN_TEXT IDTVEC(invlcache) pushl %eax pushl %ds movl $KDSEL, %eax /* Kernel data selector */ movl %eax, %ds #ifdef COUNT_IPIS pushl %fs movl $KPSEL, %eax /* Private space selector */ movl %eax, %fs movl PCPU(CPUID), %eax popl %fs movl ipi_invlcache_counts(,%eax,4),%eax incl (%eax) #endif wbinvd movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ lock incl smp_tlb_wait popl %ds popl %eax iret /* * Handler for IPIs sent via the per-cpu IPI bitmap. */ #ifndef XEN .text SUPERALIGN_TEXT IDTVEC(ipi_intr_bitmap_handler) PUSH_FRAME SET_KERNEL_SREGS cld movl lapic, %edx movl $0, LA_EOI(%edx) /* End Of Interrupt to APIC */ FAKE_MCOUNT(TF_EIP(%esp)) call ipi_bitmap_handler MEXITCOUNT jmp doreti #endif /* * Executed by a CPU when it receives an IPI_STOP from another CPU. */ .text SUPERALIGN_TEXT IDTVEC(cpustop) PUSH_FRAME SET_KERNEL_SREGS cld movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ call cpustop_handler POP_FRAME iret /* * Executed by a CPU when it receives an IPI_SUSPEND from another CPU. */ #ifndef XEN .text SUPERALIGN_TEXT IDTVEC(cpususpend) PUSH_FRAME SET_KERNEL_SREGS cld movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ call cpususpend_handler POP_FRAME jmp doreti_iret #endif /* * Executed by a CPU when it receives a RENDEZVOUS IPI from another CPU. * * - Calls the generic rendezvous action function. */ .text SUPERALIGN_TEXT IDTVEC(rendezvous) PUSH_FRAME SET_KERNEL_SREGS cld #ifdef COUNT_IPIS movl PCPU(CPUID), %eax movl ipi_rendezvous_counts(,%eax,4), %eax incl (%eax) #endif call smp_rendezvous_action movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ POP_FRAME iret /* * Clean up when we lose out on the lazy context switch optimization. * ie: when we are about to release a PTD but a cpu is still borrowing it. */ SUPERALIGN_TEXT IDTVEC(lazypmap) PUSH_FRAME SET_KERNEL_SREGS cld call pmap_lazyfix_action movl lapic, %eax movl $0, LA_EOI(%eax) /* End Of Interrupt to APIC */ POP_FRAME iret #endif /* SMP */