93cf93179c
Intel GPUs have two special memory regions. They are called Graphics Stolen Memory and OpRegion. bhyve has to emulate both of them. In order to keep track of those special regions, add generic mmio ranges to the passthru emulation. Reviewed by: markj MFC after: 1 week Sponsored by: Beckhoff Automation GmbH & Co. KG Differential Revision: https://reviews.freebsd.org/D40036
40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2020 Beckhoff Automation GmbH & Co. KG
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* Author: Corvin Köhne <c.koehne@beckhoff.com>
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*/
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#pragma once
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#include <vmmapi.h>
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#include "pci_emul.h"
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struct passthru_mmio_mapping {
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vm_paddr_t gpa; /* guest physical address */
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void *gva; /* guest virtual address */
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vm_paddr_t hpa; /* host physical address */
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void *hva; /* guest virtual address */
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vm_paddr_t len;
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};
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struct passthru_softc;
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typedef int (*cfgread_handler)(struct passthru_softc *sc,
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struct pci_devinst *pi, int coff, int bytes, uint32_t *rv);
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typedef int (*cfgwrite_handler)(struct passthru_softc *sc,
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struct pci_devinst *pi, int coff, int bytes, uint32_t val);
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uint32_t read_config(const struct pcisel *sel, long reg, int width);
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void write_config(const struct pcisel *sel, long reg, int width, uint32_t data);
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int passthru_cfgread_emulate(struct passthru_softc *sc, struct pci_devinst *pi,
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int coff, int bytes, uint32_t *rv);
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int passthru_cfgwrite_emulate(struct passthru_softc *sc, struct pci_devinst *pi,
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int coff, int bytes, uint32_t val);
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struct passthru_mmio_mapping *passthru_get_mmio(struct passthru_softc *sc,
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int num);
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struct pcisel *passthru_get_sel(struct passthru_softc *sc);
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int set_pcir_handler(struct passthru_softc *sc, int reg, int len,
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cfgread_handler rhandler, cfgwrite_handler whandler);
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