if_mtd_pci.c revision 1.13 
1/* $NetBSD: if_mtd_pci.c,v 1.13 2008/04/28 20:23:55 martin 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*
33 * PCI interface for MTD803 cards
34 * Written by Peter Bex (peter.bex@student.kun.nl)
35 */
36
37/* TODO: Check why in IO space, the MII won't work. Memory mapped works */
38
39#include <sys/cdefs.h>
40__KERNEL_RCSID(0, "$NetBSD: if_mtd_pci.c,v 1.13 2008/04/28 20:23:55 martin Exp $");
41
42#include <sys/param.h>
43#include <sys/device.h>
44#include <sys/systm.h>
45#include <sys/socket.h>
46#include <net/if.h>
47#include <net/if_ether.h>
48#include <net/if_media.h>
49#include <sys/bus.h>
50#include <dev/mii/miivar.h>
51#include <dev/ic/mtd803reg.h>
52#include <dev/ic/mtd803var.h>
53#include <dev/pci/pcidevs.h>
54#include <dev/pci/pcireg.h>
55#include <dev/pci/pcivar.h>
56
57#define PCI_IO_MAP_REG		0x10
58#define PCI_MEM_MAP_REG		0x14
59
60struct mtd_pci_device_id {
61	pci_vendor_id_t		vendor;		/* PCI vendor ID */
62	pci_product_id_t	product;	/* PCI product ID */
63};
64
65static struct mtd_pci_device_id mtd_ids[] = {
66	{ PCI_VENDOR_MYSON, PCI_PRODUCT_MYSON_MTD803 },
67	{ 0, 0 }
68};
69
70static int	mtd_pci_match(device_t, struct cfdata *, void *);
71static void	mtd_pci_attach(device_t, device_t, void *);
72
73CFATTACH_DECL(mtd_pci, sizeof(struct mtd_softc), mtd_pci_match, mtd_pci_attach,
74    NULL, NULL);
75
76static int
77mtd_pci_match(device_t parent, struct cfdata *match, void *aux)
78{
79	struct pci_attach_args *pa = aux;
80	struct mtd_pci_device_id *id;
81
82	for (id = mtd_ids; id->vendor != 0; ++id) {
83		if (PCI_VENDOR(pa->pa_id) == id->vendor &&
84		    PCI_PRODUCT(pa->pa_id) == id->product)
85			return (1);
86	}
87	return (0);
88}
89
90static void
91mtd_pci_attach(device_t parent, device_t self, void *aux)
92{
93	struct pci_attach_args * const pa = aux;
94	struct mtd_softc * const sc = device_private(self);
95	pci_intr_handle_t ih;
96	const char *intrstring = NULL;
97	bus_space_tag_t iot, memt;
98	bus_space_handle_t ioh, memh;
99	int io_valid, mem_valid;
100	char devinfo[256];
101
102	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
103	printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class));
104
105	io_valid = (pci_mapreg_map(pa, PCI_IO_MAP_REG, PCI_MAPREG_TYPE_IO,
106			0, &iot, &ioh, NULL, NULL) == 0);
107	mem_valid = (pci_mapreg_map(pa, PCI_MEM_MAP_REG, PCI_MAPREG_TYPE_MEM
108			| PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh,
109			NULL, NULL) == 0);
110
111	if (mem_valid) {
112		sc->bus_tag = memt;
113		sc->bus_handle = memh;
114	} else if (io_valid) {
115		sc->bus_tag = iot;
116		sc->bus_handle = ioh;
117	} else {
118		aprint_error_dev(&sc->dev, "could not map memory or i/o space\n");
119		return;
120	}
121	sc->dma_tag = pa->pa_dmat;
122
123	/* Do generic attach. Seems this must be done before setting IRQ */
124	mtd_config(sc);
125
126	if (pci_intr_map(pa, &ih)) {
127		aprint_error_dev(&sc->dev, "could not map interrupt\n");
128		return;
129	}
130	intrstring = pci_intr_string(pa->pa_pc, ih);
131
132	if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, mtd_irq_h, sc) == NULL) {
133		aprint_error_dev(&sc->dev, "could not establish interrupt");
134		if (intrstring != NULL)
135			printf(" at %s", intrstring);
136		printf("\n");
137		return;
138	} else {
139		printf("%s: using %s for interrupt\n",
140			device_xname(&sc->dev),
141			intrstring ? intrstring : "unknown interrupt");
142	}
143}
144