2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 NetApp, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/types.h>
41 #include "uart_emul.h"
44 * Pick a PCI vid/did of a chip with a single uart at
45 * BAR0, that most versions of FreeBSD can understand:
46 * Siig CyberSerial 1-port.
48 #define COM_VENDOR 0x131f
49 #define COM_DEV 0x2000
52 pci_uart_intr_assert(void *arg)
54 struct pci_devinst *pi = arg;
60 pci_uart_intr_deassert(void *arg)
62 struct pci_devinst *pi = arg;
64 pci_lintr_deassert(pi);
68 pci_uart_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
69 int baridx, uint64_t offset, int size, uint64_t value)
75 uart_write(pi->pi_arg, offset, value);
79 pci_uart_read(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
80 int baridx, uint64_t offset, int size)
87 val = uart_read(pi->pi_arg, offset);
92 pci_uart_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
94 struct uart_softc *sc;
96 pci_emul_alloc_bar(pi, 0, PCIBAR_IO, UART_IO_BAR_SIZE);
97 pci_lintr_request(pi);
99 /* initialize config space */
100 pci_set_cfgdata16(pi, PCIR_DEVICE, COM_DEV);
101 pci_set_cfgdata16(pi, PCIR_VENDOR, COM_VENDOR);
102 pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_SIMPLECOMM);
104 sc = uart_init(pci_uart_intr_assert, pci_uart_intr_deassert, pi);
107 if (uart_set_backend(sc, opts) != 0) {
108 EPRINTLN("Unable to initialize backend '%s' for "
109 "pci uart at %d:%d", opts, pi->pi_slot, pi->pi_func);
116 struct pci_devemu pci_de_com = {
118 .pe_init = pci_uart_init,
119 .pe_barwrite = pci_uart_write,
120 .pe_barread = pci_uart_read
122 PCI_EMUL_SET(pci_de_com);