2 * Copyright (c) 2012 NetApp, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/types.h>
38 #include "uart_emul.h"
41 * Pick a PCI vid/did of a chip with a single uart at
42 * BAR0, that most versions of FreeBSD can understand:
43 * Siig CyberSerial 1-port.
45 #define COM_VENDOR 0x131f
46 #define COM_DEV 0x2000
49 pci_uart_intr_assert(void *arg)
51 struct pci_devinst *pi = arg;
57 pci_uart_intr_deassert(void *arg)
59 struct pci_devinst *pi = arg;
61 pci_lintr_deassert(pi);
65 pci_uart_write(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
66 int baridx, uint64_t offset, int size, uint64_t value)
72 uart_write(pi->pi_arg, offset, value);
76 pci_uart_read(struct vmctx *ctx, int vcpu, struct pci_devinst *pi,
77 int baridx, uint64_t offset, int size)
84 val = uart_read(pi->pi_arg, offset);
88 static int pci_uart_nldevs; /* number of legacy uart ports allocated */
91 pci_uart_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
93 struct uart_softc *sc;
96 if (pci_is_legacy(pi)) {
97 if (uart_legacy_alloc(pci_uart_nldevs, &ioaddr, &ivec) != 0) {
98 fprintf(stderr, "Unable to allocate resources for "
99 "legacy COM%d port at pci device %d:%d\n",
100 pci_uart_nldevs + 1, pi->pi_slot, pi->pi_func);
104 pci_emul_alloc_pbar(pi, 0, ioaddr, PCIBAR_IO, UART_IO_BAR_SIZE);
107 pci_emul_alloc_bar(pi, 0, PCIBAR_IO, UART_IO_BAR_SIZE);
109 pci_lintr_request(pi, ivec);
111 /* initialize config space */
112 pci_set_cfgdata16(pi, PCIR_DEVICE, COM_DEV);
113 pci_set_cfgdata16(pi, PCIR_VENDOR, COM_VENDOR);
114 pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_SIMPLECOMM);
116 sc = uart_init(pci_uart_intr_assert, pci_uart_intr_deassert, pi);
119 if (uart_set_backend(sc, opts) != 0) {
120 fprintf(stderr, "Unable to initialize backend '%s' for "
121 "pci uart at %d:%d\n", opts, pi->pi_slot, pi->pi_func);
128 struct pci_devemu pci_de_com = {
130 .pe_init = pci_uart_init,
131 .pe_barwrite = pci_uart_write,
132 .pe_barread = pci_uart_read
134 PCI_EMUL_SET(pci_de_com);