mq200_pci.c revision 1.6 
1/*	$NetBSD: mq200_pci.c,v 1.6 2023/12/20 14:50:02 thorpej Exp $	*/
2
3/*-
4 * Copyright (c) 2002 TAKEMURA Shin
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: mq200_pci.c,v 1.6 2023/12/20 14:50:02 thorpej Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/device.h>
39
40#include <dev/pci/pcireg.h>
41#include <dev/pci/pcivar.h>
42#include <dev/pci/pcidevs.h>
43#include <dev/pci/pciio.h>
44
45#include <hpcmips/dev/mq200var.h>
46
47struct mq200_pci_softc {
48	struct mq200_softc	sc_mq200;
49	pci_chipset_tag_t sc_pc;
50	pcitag_t sc_pcitag;
51};
52
53int	mq200_pci_match(device_t, cfdata_t, void *);
54void	mq200_pci_attach(device_t, device_t, void *);
55
56CFATTACH_DECL_NEW(mqvideo_pci, sizeof(struct mq200_pci_softc),
57    mq200_pci_match, mq200_pci_attach, NULL, NULL);
58
59int
60mq200_pci_match(device_t parent, cfdata_t match, void *aux)
61{
62	struct pci_attach_args *pa = aux;
63
64	/* check vendor id and product id */
65	if (pa->pa_id !=
66	    PCI_ID_CODE(PCI_VENDOR_MEDIAQ, PCI_PRODUCT_MEDIAQ_MQ200))
67		return (0);
68
69	return (1);
70}
71
72void
73mq200_pci_attach(device_t parent, device_t self, void *aux)
74{
75	struct mq200_pci_softc *psc = device_private(self);
76	struct mq200_softc *sc = &psc->sc_mq200;
77	struct pci_attach_args *pa = aux;
78	int res;
79
80	sc->sc_dev = self;
81	psc->sc_pc = pa->pa_pc;
82	psc->sc_pcitag = pa->pa_tag;
83
84	/* check whether it is disabled by firmware */
85	if (!(pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) &
86	    PCI_COMMAND_MEM_ENABLE)) {
87		printf("%s: disabled\n", device_xname(sc->sc_dev));
88		return;
89	}
90
91	/* Base Address Register 0: base address of control registers */
92	res = pci_mapreg_map(pa, PCI_MAPREG_START, PCI_MAPREG_TYPE_MEM,
93	    0, &sc->sc_iot, &sc->sc_ioh, NULL, NULL);
94	if (res != 0) {
95		printf("%s: can't map registers\n", device_xname(sc->sc_dev));
96		return;
97	}
98
99	/* Base Address Register 1: base address of frame buffer */
100	res = pci_mapreg_info(psc->sc_pc, psc->sc_pcitag, PCI_MAPREG_START+4,
101	    PCI_MAPREG_TYPE_MEM, &sc->sc_baseaddr, NULL, NULL);
102	if (res != 0) {
103		printf("%s: can't map frame buffer\n", device_xname(sc->sc_dev));
104		return;
105	}
106
107	mq200_attach(sc);
108}
109