Differential D26506 Diff 78156 usr.sbin/bhyve/pci_apu-d.c

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usr.sbin/bhyve/pci_apu-d.c

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				/*-
				* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
				*
				* Copyright (c) 2020 Beckhoff Automation GmbH & Co. KG
				* 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 THE AUTHOR OR 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.
				*
				* $FreeBSD$
				*/

				#include <sys/cdefs.h>
				__FBSDID("$FreeBSD$");

				#include <sys/param.h>
				#include <sys/types.h>
				#include <sys/mman.h>

				#include <dev/pci/pcireg.h>

				#include <stdio.h>
				#include <stdlib.h>
				#include <string.h>
				#include <err.h>
				#include <errno.h>
				#include <fcntl.h>
				#include <sysexits.h>
				#include <unistd.h>

				#include <machine/vmm.h>

				#include "inout.h"
				#include "pci_passthru.h"

				#define KB (1024UL)
				#define MB (1024 * 1024UL)
				#define GB (1024 * 1024 * 1024UL)

				#define VBIOS_ADDR 0xC0000

				static int
				apu_d_init(struct vmctx ctx, struct pci_devinst pi, char *opts)
				{
				int error;
				struct passthru_softc *sc;

				error = 0;

				if ((error = passthru_init(ctx, pi, opts)) != 0)
				goto done;

				sc = pi->pi_arg;

				uint16_t vendor, dev_id;
				uint64_t bios_size;
				vendor = read_config(&sc->psc_sel, PCIR_VENDOR, 0x02);
				dev_id = read_config(&sc->psc_sel, PCIR_DEVICE, 0x02);

				vm_get_vbios(ctx, sc->psc_sel.pc_bus, sc->psc_sel.pc_dev, sc->psc_sel.pc_func, vendor, dev_id, NULL, &bios_size);

				// round up size to a power of two
				// check in descendig order to avoid endless loop
				pi->pi_vbios.len = 1ULL << 63;
				while (pi->pi_vbios.len > bios_size) {
				pi->pi_vbios.len >>= 1;
				}
				pi->pi_vbios.len <<= 1;
				pi->pi_vbios.gpa = VBIOS_ADDR;
				pi->pi_vbios.hpa = (uint64_t)vm_create_devmem(ctx, VM_VIDEOBIOS, "videobios", pi->pi_vbios.len);
				if ((void *)pi->pi_vbios.hpa == MAP_FAILED) {
				warnx("vm_create_devmem: %x", errno);
				error = -1;
				goto done;
				}

				vm_get_vbios(ctx, sc->psc_sel.pc_bus, sc->psc_sel.pc_dev, sc->psc_sel.pc_func, vendor, dev_id, (void *)pi->pi_vbios.hpa, &bios_size);

				if ((error = pci_emul_alloc_rom(pi, VM_VIDEOBIOS, pi->pi_vbios.gpa, pi->pi_vbios.len)) != 0) {
				warnx("pci_emul_alloc_rom: %x", error);
				goto done;
				}

				done:
				return (error);
				}

				static int
				apu_d_cfgwrite(struct vmctx ctx, int vcpu, struct pci_devinst pi, int coff, int bytes, uint32_t val)
				{
				return passthru_cfgwrite(ctx, vcpu, pi, coff, bytes, val);
				}

				static int
				apu_d_cfgread(struct vmctx ctx, int vcpu, struct pci_devinst pi, int coff, int bytes, uint32_t *rv)
				{
				return passthru_cfgread(ctx, vcpu, pi, coff, bytes, rv);
				}

				static void
				apu_d_write(struct vmctx ctx, int vcpu, struct pci_devinst pi, int baridx, uint64_t offset, int size, uint64_t value)
				{
				passthru_write(ctx, vcpu, pi, baridx, offset, size, value);
				}

				static uint64_t
				apu_d_read(struct vmctx ctx, int vcpu, struct pci_devinst pi, int baridx, uint64_t offset, int size)
				{
				return passthru_read(ctx, vcpu, pi, baridx, offset, size);
				}

				struct pci_devemu apu_d = {
				.pe_emu = "apu-d",
				.pe_init = apu_d_init,
				.pe_cfgwrite = apu_d_cfgwrite,
				.pe_cfgread = apu_d_cfgread,
				.pe_barwrite = apu_d_write,
				.pe_barread = apu_d_read,
				};
				PCI_EMUL_SET(apu_d);