Merge from vendor branch CVS:
[dragonfly.git] / sys / dev / netif / lnc / if_lnc_pci.c
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1/*
2 * Copyright (c) 1994-2000
3 * Paul Richards. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * verbatim and that no modifications are made prior to this
11 * point in the file.
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 Paul Richards 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 PAUL RICHARDS ``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 PAUL RICHARDS 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 * $FreeBSD: src/sys/dev/lnc/if_lnc_pci.c,v 1.25 2001/07/04 13:00:19 nyan Exp $
e9cb6d99 31 * $DragonFly: src/sys/dev/netif/lnc/if_lnc_pci.c,v 1.5 2005/05/24 20:59:01 dillon Exp $
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32 */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/socket.h>
37#include <sys/malloc.h>
38#include <sys/kernel.h>
39
40#include <machine/bus.h>
41#include <machine/resource.h>
42#include <sys/bus.h>
43#include <sys/rman.h>
44
45#include <net/ethernet.h>
46#include <net/if.h>
47#include <net/if_arp.h>
48
49#include <bus/pci/pcireg.h>
50#include <bus/pci/pcivar.h>
51
52#include <dev/netif/lnc/if_lncreg.h>
53#include <dev/netif/lnc/if_lncvar.h>
54
55#define AMD_VENDOR_ID 0x1022
56#define PCI_DEVICE_ID_PCNet_PCI 0x2000
57#define PCI_DEVICE_ID_PCHome_PCI 0x2001
58
59#define LNC_PROBE_PRIORITY -1
60
61static int
62lnc_pci_probe(device_t dev)
63{
64 if (pci_get_vendor(dev) != AMD_VENDOR_ID)
65 return (ENXIO);
66
67 switch(pci_get_device(dev)) {
68 case PCI_DEVICE_ID_PCNet_PCI:
69 device_set_desc(dev, "PCNet/PCI Ethernet adapter");
70 return(LNC_PROBE_PRIORITY);
71 break;
72 case PCI_DEVICE_ID_PCHome_PCI:
73 device_set_desc(dev, "PCHome/PCI Ethernet adapter");
74 return(LNC_PROBE_PRIORITY);
75 break;
76 default:
77 return (ENXIO);
78 break;
79 }
80 return (ENXIO);
81}
82
83static void
84lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
85{
86 /* Do nothing */
87 return;
88}
89
90static int
91lnc_pci_attach(device_t dev)
92{
93 lnc_softc_t *sc = device_get_softc(dev);
94 unsigned command;
95 int rid = 0;
96 int err = 0;
97 bus_size_t lnc_mem_size;
98
99 device_printf(dev, "Attaching %s\n", device_get_desc(dev));
100
101 command = pci_read_config(dev, PCIR_COMMAND, 4);
102 command |= PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN;
103 pci_write_config(dev, PCIR_COMMAND, command, 4);
104
105 rid = PCIR_MAPS;
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106 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
107 RF_ACTIVE);
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108
109 if (! sc->portres)
110 device_printf(dev, "Cannot allocate I/O ports\n");
111
112 rid = 0;
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113 sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
114 RF_ACTIVE | RF_SHAREABLE);
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115
116 if (! sc->irqres)
117 device_printf(dev, "Cannot allocate irq\n");
118
119 err = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
e9cb6d99 120 sc, &sc->intrhand, NULL);
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121 if (err)
122 device_printf(dev, "Cannot setup irq handler\n");
123
124 sc->lnc_btag = rman_get_bustag(sc->portres);
125 sc->lnc_bhandle = rman_get_bushandle(sc->portres);
126
127 /* XXX temp setting for nic */
128 sc->nic.ic = PCnet_PCI;
129 sc->nic.ident = NE2100;
130 sc->nic.mem_mode = DMA_FIXED;
131 sc->nrdre = NRDRE;
132 sc->ntdre = NTDRE;
133 sc->rap = PCNET_RAP;
134 sc->rdp = PCNET_RDP;
135 sc->bdp = PCNET_BDP;
136
137 /* Create a DMA tag describing the ring memory we need */
138
139 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
140 sizeof(struct host_ring_entry));
141
142 lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
143 (NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW;
144
145 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
146 (NDESC(sc->ntdre) * TRANSBUFSIZE);
147
148 err = bus_dma_tag_create(NULL, /* parent */
149 1, /* alignement */
150 0, /* boundary */
128750c9 151 BUS_SPACE_MAXADDR_24BIT, /* lowaddr */
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152 BUS_SPACE_MAXADDR, /* highaddr */
153 NULL, NULL, /* filter, filterarg */
154 lnc_mem_size, /* segsize */
155 1, /* nsegments */
156 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
157 0, /* flags */
158 &sc->dmat);
159
160 if (err) {
161 device_printf(dev, "Can't create DMA tag\n");
162 /* XXX need to free currently allocated resources here */
163 return (ENOMEM);
164 }
165
166 err = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
167 BUS_DMA_NOWAIT, &sc->dmamap);
168
169 if (err) {
170 device_printf(dev, "Couldn't allocate memory\n");
171 /* XXX need to free currently allocated resources here */
172 return (ENOMEM);
173 }
174
175 bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, lnc_mem_size,
176 lnc_alloc_callback, sc->recv_ring, BUS_DMA_NOWAIT);
177
178 /* Call generic attach code */
179 if (! lnc_attach_common(dev)) {
180 device_printf(dev, "Generic attach code failed\n");
181 }
182 return (0);
183}
184
185static int
186lnc_pci_detach(device_t dev)
187{
188 lnc_softc_t *sc = device_get_softc(dev);
189 int s = splimp();
190
0a8b5977 191 ether_ifdetach(&sc->arpcom.ac_if);
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192
193 lnc_stop(sc);
194 bus_teardown_intr(dev, sc->irqres, sc->intrhand);
195 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irqres);
196 bus_release_resource(dev, SYS_RES_IOPORT, PCIR_MAPS, sc->portres);
197
198 bus_dmamap_unload(sc->dmat, sc->dmamap);
199 bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap);
200 bus_dma_tag_destroy(sc->dmat);
201
202 splx(s);
203 return (0);
204}
205
206static device_method_t lnc_pci_methods[] = {
207 DEVMETHOD(device_probe, lnc_pci_probe),
208 DEVMETHOD(device_attach, lnc_pci_attach),
209 DEVMETHOD(device_detach, lnc_pci_detach),
210#ifdef notyet
211 DEVMETHOD(device_suspend, lnc_pci_suspend),
212 DEVMETHOD(device_resume, lnc_pci_resume),
213 DEVMETHOD(device_shutdown, lnc_pci_shutdown),
214#endif
215 { 0, 0 }
216};
217
218static driver_t lnc_pci_driver = {
219 "lnc",
220 lnc_pci_methods,
221 sizeof(struct lnc_softc),
222};
223
224DRIVER_MODULE(if_lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0);