uart_bus_pci.c revision 158058 
1/*-
2 * Copyright (c) 2001 M. Warner Losh.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include <sys/cdefs.h>
26__FBSDID("$FreeBSD: head/sys/dev/uart/uart_bus_pci.c 158058 2006-04-26 21:31:31Z marcel $");
27
28#include <sys/param.h>
29#include <sys/systm.h>
30#include <sys/bus.h>
31#include <sys/conf.h>
32#include <sys/kernel.h>
33#include <sys/module.h>
34#include <machine/bus.h>
35#include <sys/rman.h>
36#include <machine/resource.h>
37
38#include <dev/pci/pcivar.h>
39
40#include <dev/uart/uart.h>
41#include <dev/uart/uart_bus.h>
42
43#define	DEFAULT_RCLK	1843200
44
45static int uart_pci_probe(device_t dev);
46
47static device_method_t uart_pci_methods[] = {
48	/* Device interface */
49	DEVMETHOD(device_probe,		uart_pci_probe),
50	DEVMETHOD(device_attach,	uart_bus_attach),
51	DEVMETHOD(device_detach,	uart_bus_detach),
52	{ 0, 0 }
53};
54
55static driver_t uart_pci_driver = {
56	uart_driver_name,
57	uart_pci_methods,
58	sizeof(struct uart_softc),
59};
60
61struct pci_id {
62	uint16_t	vendor;
63	uint16_t	device;
64	uint16_t	subven;
65	uint16_t	subdev;
66	const char	*desc;
67	int		rid;
68	int		rclk;
69};
70
71static struct pci_id pci_ns8250_ids[] = {
72{ 0x1028, 0x0008, 0xffff, 0, "Dell Remote Access Card III", 0x14, 128 * DEFAULT_RCLK },
73{ 0x1028, 0x0012, 0xffff, 0, "Dell Remote Access Card 4 Daughter Card Virtual UART", 0x14, 128 * DEFAULT_RCLK },
74{ 0x1033, 0x0074, 0x1033, 0x8014, "NEC RCV56ACF 56k Voice Modem", 0x10 },
75{ 0x1033, 0x007d, 0x1033, 0x8012, "NEC RS232C", 0x10 },
76{ 0x11c1, 0x0480, 0xffff, 0, "Agere Systems Venus Modem (V90, 56KFlex)", 0x14 },
77{ 0x115d, 0x0103, 0xffff, 0, "Xircom Cardbus Ethernet + 56k Modem", 0x10 },
78{ 0x12b9, 0x1008, 0xffff, 0, "3Com 56K FaxModem Model 5610", 0x10 },
79{ 0x131f, 0x1000, 0xffff, 0, "Siig CyberSerial (1-port) 16550", 0x18 },
80{ 0x131f, 0x1001, 0xffff, 0, "Siig CyberSerial (1-port) 16650", 0x18 },
81{ 0x131f, 0x1002, 0xffff, 0, "Siig CyberSerial (1-port) 16850", 0x18 },
82{ 0x131f, 0x2000, 0xffff, 0, "Siig CyberSerial (1-port) 16550", 0x10 },
83{ 0x131f, 0x2001, 0xffff, 0, "Siig CyberSerial (1-port) 16650", 0x10 },
84{ 0x131f, 0x2002, 0xffff, 0, "Siig CyberSerial (1-port) 16850", 0x10 },
85{ 0x135c, 0x0190, 0xffff, 0, "Quatech SSCLP-100", 0x18 },
86{ 0x135c, 0x01c0, 0xffff, 0, "Quatech SSCLP-200/300", 0x18 },
87{ 0x135e, 0x7101, 0xffff, 0, "Sealevel Systems Single Port RS-232/422/485/530", 0x18 },
88{ 0x1407, 0x0110, 0xffff, 0, "Lava Computer mfg DSerial-PCI Port A", 0x10 },
89{ 0x1407, 0x0111, 0xffff, 0, "Lava Computer mfg DSerial-PCI Port B", 0x10 },
90{ 0x1415, 0x950b, 0xffff, 0, "Oxford Semiconductor OXCB950 Cardbus 16950 UART", 0x10, 16384000 },
91{ 0x151f, 0x0000, 0xffff, 0, "TOPIC Semiconductor TP560 Data/Fax/Voice 56k modem", 0x10 },
92{ 0xdeaf, 0x9051, 0xffff, 0, "Middle Digital PC Weasel Serial Port", 0x10 },
93{ 0xffff, 0, 0xffff, 0, NULL, 0, 0}
94};
95
96static struct pci_id *
97uart_pci_match(device_t dev, struct pci_id *id)
98{
99	uint16_t device, subdev, subven, vendor;
100
101	vendor = pci_get_vendor(dev);
102	device = pci_get_device(dev);
103	while (id->vendor != 0xffff &&
104	    (id->vendor != vendor || id->device != device))
105		id++;
106	if (id->vendor == 0xffff)
107		return (NULL);
108	if (id->subven == 0xffff)
109		return (id);
110	subven = pci_get_subvendor(dev);
111	subdev = pci_get_subdevice(dev);
112	while (id->vendor == vendor && id->device == device &&
113	    (id->subven != subven || id->subdev != subdev))
114		id++;
115	return ((id->vendor == vendor && id->device == device) ? id : NULL);
116}
117
118static int
119uart_pci_probe(device_t dev)
120{
121	struct uart_softc *sc;
122	struct pci_id *id;
123
124	sc = device_get_softc(dev);
125
126	id = uart_pci_match(dev, pci_ns8250_ids);
127	if (id != NULL) {
128		sc->sc_class = &uart_ns8250_class;
129		goto match;
130	}
131	/* Add checks for non-ns8250 IDs here. */
132	return (ENXIO);
133
134 match:
135	if (id->desc)
136		device_set_desc(dev, id->desc);
137	return (uart_bus_probe(dev, 0, id->rclk, id->rid, 0));
138}
139
140DRIVER_MODULE(uart, pci, uart_pci_driver, uart_devclass, 0, 0);
141DRIVER_MODULE(uart, cardbus, uart_pci_driver, uart_devclass, 0, 0);
142