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Diffstat (limited to 'sys/amd64/vmm/vmm_lapic.h')
-rw-r--r-- | sys/amd64/vmm/vmm_lapic.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/sys/amd64/vmm/vmm_lapic.h b/sys/amd64/vmm/vmm_lapic.h new file mode 100644 index 0000000..a79912e --- /dev/null +++ b/sys/amd64/vmm/vmm_lapic.h @@ -0,0 +1,71 @@ +/*- + * Copyright (c) 2011 NetApp, Inc. + * 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. + * + * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``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 NETAPP, INC 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. + * + * $FreeBSD$ + */ + +#ifndef _VMM_LAPIC_H_ +#define _VMM_LAPIC_H_ + +struct vm; + +boolean_t lapic_msr(u_int num); +int lapic_rdmsr(struct vm *vm, int cpu, u_int msr, uint64_t *rval); +int lapic_wrmsr(struct vm *vm, int cpu, u_int msr, uint64_t wval); + +int lapic_mmio_read(void *vm, int cpu, uint64_t gpa, + uint64_t *rval, int size, void *arg); +int lapic_mmio_write(void *vm, int cpu, uint64_t gpa, + uint64_t wval, int size, void *arg); + +int lapic_timer_tick(struct vm *vm, int cpu); + +/* + * Returns a vector between 32 and 255 if an interrupt is pending in the + * IRR that can be delivered based on the current state of ISR and TPR. + * + * Note that the vector does not automatically transition to the ISR as a + * result of calling this function. + * + * Returns -1 if there is no eligible vector that can be delivered to the + * guest at this time. + */ +int lapic_pending_intr(struct vm *vm, int cpu); + +/* + * Transition 'vector' from IRR to ISR. This function is called with the + * vector returned by 'lapic_pending_intr()' when the guest is able to + * accept this interrupt (i.e. RFLAGS.IF = 1 and no conditions exist that + * block interrupt delivery). + */ +void lapic_intr_accepted(struct vm *vm, int cpu, int vector); + +/* + * Signals to the LAPIC that an interrupt at 'vector' needs to be generated + * to the 'cpu', the state is recorded in IRR. + */ +int lapic_set_intr(struct vm *vm, int cpu, int vector); + +#endif |