9cb339cc7b
Add an implementatation of the 'Virtual Machine Generation ID' spec to Bhyve. The spec provides a randomly generated GUID (at bhyve start) in device memory, along with an ACPI device with _CID VM_Gen_Counter and ADDR evaluating to a Package pointing at that GUID. A GPE is defined which Notifies the ACPI Device when the generation changes (such as when a snapshot is rolled back). At this time, Bhyve does not support snapshotting, so the GPE is never actually raised. Suggested by: rpokala Discussed with: grehan Differential Revision: https://reviews.freebsd.org/D23165
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2012 NetApp, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _ACPI_H_
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#define _ACPI_H_
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#define SCI_INT 9
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#define SMI_CMD 0xb2
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#define BHYVE_ACPI_ENABLE 0xa0
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#define BHYVE_ACPI_DISABLE 0xa1
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#define PM1A_EVT_ADDR 0x400
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#define PM1A_CNT_ADDR 0x404
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#define IO_PMTMR 0x408 /* 4-byte i/o port for the timer */
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#define IO_GPE0_BLK 0x40c /* 2x 1-byte IO port for GPE0_STS/EN */
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#define IO_GPE0_LEN 0x2
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#define IO_GPE0_STS IO_GPE0_BLK
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#define IO_GPE0_EN (IO_GPE0_BLK + (IO_GPE0_LEN / 2))
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/* Allocated GPE bits. */
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#define GPE_VMGENC 0
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struct vmctx;
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int acpi_build(struct vmctx *ctx, int ncpu);
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void acpi_raise_gpe(struct vmctx *ctx, unsigned bit);
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void dsdt_line(const char *fmt, ...);
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void dsdt_fixed_ioport(uint16_t iobase, uint16_t length);
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void dsdt_fixed_irq(uint8_t irq);
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void dsdt_fixed_mem32(uint32_t base, uint32_t length);
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void dsdt_indent(int levels);
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void dsdt_unindent(int levels);
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void sci_init(struct vmctx *ctx);
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#endif /* _ACPI_H_ */
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