Differential D26976 Diff 78821 sys/arm64/vmm/io/vtimer.h

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sys/arm64/vmm/io/vtimer.h

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				/*-
				* Copyright (c) 2017 The FreeBSD Foundation
				*
				* 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.
				* 3. The name of the company nor the name of the author may be used to
				* endorse or promote products derived from this software without specific
				* prior written permission.
				*
				* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
				*/

				#ifndef _VMM_VTIMER_H_
				#define _VMM_VTIMER_H_

				#define GT_PHYS_NS_IRQ 30
				#define GT_VIRT_IRQ 27

				#define CNTP_CTL_EL0_OP0 0b11
				#define CNTP_CTL_EL0_OP2 0b001
				#define CNTP_CTL_EL0_OP1 0b011
				#define CNTP_CTL_EL0_CRn 0b1110
				#define CNTP_CTL_EL0_CRm 0b0010
				#define ISS_CNTP_CTL_EL0 \
				(CNTP_CTL_EL0_OP0 << ISS_MSR_OP0_SHIFT \| \
				CNTP_CTL_EL0_OP2 << ISS_MSR_OP2_SHIFT \| \
				CNTP_CTL_EL0_OP1 << ISS_MSR_OP1_SHIFT \| \
				CNTP_CTL_EL0_CRn << ISS_MSR_CRn_SHIFT \| \
				CNTP_CTL_EL0_CRm << ISS_MSR_CRm_SHIFT)

				#define CNTP_CVAL_EL0_OP0 0b11
				#define CNTP_CVAL_EL0_OP1 0b011
				#define CNTP_CVAL_EL0_OP2 0b010
				#define CNTP_CVAL_EL0_CRn 0b1110
				#define CNTP_CVAL_EL0_CRm 0b0010
				#define ISS_CNTP_CVAL_EL0 \
				(CNTP_CVAL_EL0_OP0 << ISS_MSR_OP0_SHIFT \| \
				CNTP_CVAL_EL0_OP2 << ISS_MSR_OP2_SHIFT \| \
				CNTP_CVAL_EL0_OP1 << ISS_MSR_OP1_SHIFT \| \
				CNTP_CVAL_EL0_CRn << ISS_MSR_CRn_SHIFT \| \
				CNTP_CVAL_EL0_CRm << ISS_MSR_CRm_SHIFT)

				#define CNTP_TVAL_EL0_OP0 0b11
				#define CNTP_TVAL_EL0_OP1 0b011
				#define CNTP_TVAL_EL0_OP2 0b000
				#define CNTP_TVAL_EL0_CRn 0b1110
				#define CNTP_TVAL_EL0_CRm 0b0010
				#define ISS_CNTP_TVAL_EL0 \
				(CNTP_TVAL_EL0_OP0 << ISS_MSR_OP0_SHIFT \| \
				CNTP_TVAL_EL0_OP2 << ISS_MSR_OP2_SHIFT \| \
				CNTP_TVAL_EL0_OP1 << ISS_MSR_OP1_SHIFT \| \
				CNTP_TVAL_EL0_CRn << ISS_MSR_CRn_SHIFT \| \
				CNTP_TVAL_EL0_CRm << ISS_MSR_CRm_SHIFT)

				struct vtimer
				{
				uint64_t cnthctl_el2;
				uint64_t cntvoff_el2;
				};

				struct vtimer_cpu
				{
				struct callout callout;
				uint32_t cntkctl_el1;
				/*
				* Emulated registers:
				*
				* CNTP_CTL_EL0: Counter-timer Physical Timer Control Register
				* CNTP_CVAL_EL0: Counter-timer Physical Timer CompareValue Register
				*/
				uint64_t cntp_cval_el0;
				uint32_t cntp_ctl_el0;
				/*
				* The virtual machine has full access to the virtual timer. The
				* following registers are part of the VM context for the current CPU:
				*
				* CNTV_CTL_EL0: Counter-timer Virtuel Timer Control Register
				* CNTV_CVAL_EL0: Counter-timer Virtual Timer CompareValue Register
				*/
				uint64_t cntv_cval_el0;
				uint32_t cntv_ctl_el0;
				};

				int vtimer_init(uint64_t cnthctl_el2);
				void vtimer_vminit(void *arg);
				void vtimer_cpuinit(void *arg);
				void vtimer_vmcleanup(void *arg);
				void vtimer_cleanup(void);

				int vtimer_phys_ctl_read(void vm, int vcpuid, uint64_t rval, void *arg);
				int vtimer_phys_ctl_write(void vm, int vcpuid, uint64_t wval, void arg);
				int vtimer_phys_cval_read(void vm, int vcpuid, uint64_t rval, void *arg);
				int vtimer_phys_cval_write(void vm, int vcpuid, uint64_t wval, void arg);
				int vtimer_phys_tval_read(void vm, int vcpuid, uint64_t rval, void *arg);
				int vtimer_phys_tval_write(void vm, int vcpuid, uint64_t wval, void arg);
				#endif