if_mtd_pci.c revision 1.11 
1/* $NetBSD: if_mtd_pci.c,v 1.11 2008/03/12 18:26:58 dyoung Exp $ */
2
3/*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Peter Bex <Peter.Bex@student.kun.nl>.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *	This product includes software developed by the NetBSD
21 *	Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39/*
40 * PCI interface for MTD803 cards
41 * Written by Peter Bex (peter.bex@student.kun.nl)
42 */
43
44/* TODO: Check why in IO space, the MII won't work. Memory mapped works */
45
46#include <sys/cdefs.h>
47__KERNEL_RCSID(0, "$NetBSD: if_mtd_pci.c,v 1.11 2008/03/12 18:26:58 dyoung Exp $");
48
49#include <sys/param.h>
50#include <sys/device.h>
51#include <sys/systm.h>
52#include <sys/socket.h>
53#include <net/if.h>
54#include <net/if_ether.h>
55#include <net/if_media.h>
56#include <sys/bus.h>
57#include <dev/mii/miivar.h>
58#include <dev/ic/mtd803reg.h>
59#include <dev/ic/mtd803var.h>
60#include <dev/pci/pcidevs.h>
61#include <dev/pci/pcireg.h>
62#include <dev/pci/pcivar.h>
63
64#define PCI_IO_MAP_REG		0x10
65#define PCI_MEM_MAP_REG		0x14
66
67struct mtd_pci_device_id {
68	pci_vendor_id_t		vendor;		/* PCI vendor ID */
69	pci_product_id_t	product;	/* PCI product ID */
70};
71
72static struct mtd_pci_device_id mtd_ids[] = {
73	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 },
74	{ 0, 0 }
75};
76
77static int	mtd_pci_match(device_t, struct cfdata *, void *);
78static void	mtd_pci_attach(device_t, device_t, void *);
79
80CFATTACH_DECL(mtd_pci, sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach,
81    NULL, NULL);
82
83static int
84mtd_pci_match(device_t parent, struct cfdata *match, void *aux)
85{
86	struct pci_attach_args *pa = aux;
87	struct mtd_pci_device_id *id;
88
89	for (id = mtd_ids; id->vendor != 0; ++id) {
90		if (PCI_VENDOR(pa->pa_id) == id->vendor &&
91		    PCI_PRODUCT(pa->pa_id) == id->product)
92			return (1);
93	}
94	return (0);
95}
96
97static void
98mtd_pci_attach(device_t parent, device_t self, void *aux)
99{
100	struct pci_attach_args * const pa = aux;
101	struct mtd_softc * const sc = device_private(self);
102	pci_intr_handle_t ih;
103	const char *intrstring = NULL;
104	bus_space_tag_t iot, memt;
105	bus_space_handle_t ioh, memh;
106	int io_valid, mem_valid;
107	char devinfo[256];
108
109	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
110	printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
111
112	io_valid = (pci_mapreg_map(pa, PCI_IO_MAP_REG, PCI_MAPREG_TYPE_IO,
113			0, &iot, &ioh, NULL, NULL) == 0);
114	mem_valid = (pci_mapreg_map(pa, PCI_MEM_MAP_REG, PCI_MAPREG_TYPE_MEM
115			| PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh,
116			NULL, NULL) == 0);
117
118	if (mem_valid) {
119		sc->bus_tag = memt;
120		sc->bus_handle = memh;
121	} else if (io_valid) {
122		sc->bus_tag = iot;
123		sc->bus_handle = ioh;
124	} else {
125		printf("%s: could not map memory or i/o space\n",
126			sc->dev.dv_xname);
127		return;
128	}
129	sc->dma_tag = pa->pa_dmat;
130
131	/* Do generic attach. Seems this must be done before setting IRQ */
132	mtd_config(sc);
133
134	if (pci_intr_map(pa, &ih)) {
135		printf("%s: could not map interrupt\n", sc->dev.dv_xname);
136		return;
137	}
138	intrstring = pci_intr_string(pa->pa_pc, ih);
139
140	if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_irq_h, sc) == NULL) {
141		printf("%s: could not establish interrupt", sc->dev.dv_xname);
142		if (intrstring != NULL)
143			printf(" at %s", intrstring);
144		printf("\n");
145		return;
146	} else {
147		printf("%s: using %s for interrupt\n",
148			sc->dev.dv_xname,
149			intrstring ? intrstring : "unknown interrupt");
150	}
151}
152