2 * Copyright (c) 1994-2000
3 * Paul Richards. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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
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.
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
30 * $FreeBSD: src/sys/dev/lnc/if_lnc_pci.c,v 1.25 2001/07/04 13:00:19 nyan Exp $
31 * $DragonFly: src/sys/dev/netif/lnc/if_lnc_pci.c,v 1.6 2005/06/13 22:55:15 joerg Exp $
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 #include <sys/thread2.h>
41 #include <machine/bus.h>
42 #include <machine/resource.h>
46 #include <net/ethernet.h>
48 #include <net/if_arp.h>
50 #include <bus/pci/pcireg.h>
51 #include <bus/pci/pcivar.h>
53 #include <dev/netif/lnc/if_lncreg.h>
54 #include <dev/netif/lnc/if_lncvar.h>
56 #define AMD_VENDOR_ID 0x1022
57 #define PCI_DEVICE_ID_PCNet_PCI 0x2000
58 #define PCI_DEVICE_ID_PCHome_PCI 0x2001
60 #define LNC_PROBE_PRIORITY -1
62 static int lnc_pci_detach(device_t);
65 lnc_pci_probe(device_t dev)
67 if (pci_get_vendor(dev) != AMD_VENDOR_ID)
70 switch(pci_get_device(dev)) {
71 case PCI_DEVICE_ID_PCNet_PCI:
72 device_set_desc(dev, "PCNet/PCI Ethernet adapter");
73 return(LNC_PROBE_PRIORITY);
75 case PCI_DEVICE_ID_PCHome_PCI:
76 device_set_desc(dev, "PCHome/PCI Ethernet adapter");
77 return(LNC_PROBE_PRIORITY);
87 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
94 lnc_pci_attach(device_t dev)
96 lnc_softc_t *sc = device_get_softc(dev);
100 bus_size_t lnc_mem_size;
102 command = pci_read_config(dev, PCIR_COMMAND, 4);
103 command |= PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN;
104 pci_write_config(dev, PCIR_COMMAND, command, 4);
107 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
111 device_printf(dev, "Cannot allocate I/O ports\n");
117 sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
118 RF_ACTIVE | RF_SHAREABLE);
121 device_printf(dev, "Cannot allocate irq\n");
126 sc->lnc_btag = rman_get_bustag(sc->portres);
127 sc->lnc_bhandle = rman_get_bushandle(sc->portres);
129 /* XXX temp setting for nic */
130 sc->nic.ic = PCnet_PCI;
131 sc->nic.ident = NE2100;
132 sc->nic.mem_mode = DMA_FIXED;
139 /* Create a DMA tag describing the ring memory we need */
141 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
142 sizeof(struct host_ring_entry));
144 lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
145 (NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW;
147 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
148 (NDESC(sc->ntdre) * TRANSBUFSIZE);
150 error = bus_dma_tag_create(NULL, /* parent */
153 BUS_SPACE_MAXADDR_24BIT, /* lowaddr */
154 BUS_SPACE_MAXADDR, /* highaddr */
155 NULL, NULL, /* filter, filterarg */
156 lnc_mem_size, /* segsize */
158 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
159 BUS_DMA_ALLOCNOW, /* flags */
163 device_printf(dev, "Can't create DMA tag\n");
167 error = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
168 BUS_DMA_WAITOK, &sc->dmamap);
170 device_printf(dev, "Couldn't allocate memory\n");
174 error = bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring,
175 lnc_mem_size, lnc_alloc_callback,
178 device_printf(dev, "Couldn't map receive ring\n");
182 /* Call generic attach code */
183 if (! lnc_attach_common(dev)) {
184 device_printf(dev, "Generic attach code failed\n");
189 error = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
190 sc, &sc->intrhand, NULL);
192 device_printf(dev, "Cannot setup irq handler\n");
193 ether_ifdetach(&sc->arpcom.ac_if);
205 lnc_pci_detach(device_t dev)
207 lnc_softc_t *sc = device_get_softc(dev);
211 if (device_is_attached(dev)) {
212 ether_ifdetach(&sc->arpcom.ac_if);
217 bus_teardown_intr(dev, sc->irqres, sc->intrhand);
222 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irqres);
224 bus_release_resource(dev, SYS_RES_IOPORT, PCIR_MAPS,
228 bus_dmamap_unload(sc->dmat, sc->dmamap);
229 bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap);
232 bus_dma_tag_destroy(sc->dmat);
237 static device_method_t lnc_pci_methods[] = {
238 DEVMETHOD(device_probe, lnc_pci_probe),
239 DEVMETHOD(device_attach, lnc_pci_attach),
240 DEVMETHOD(device_detach, lnc_pci_detach),
242 DEVMETHOD(device_suspend, lnc_pci_suspend),
243 DEVMETHOD(device_resume, lnc_pci_resume),
244 DEVMETHOD(device_shutdown, lnc_pci_shutdown),
249 static driver_t lnc_pci_driver = {
252 sizeof(struct lnc_softc),
255 DRIVER_MODULE(if_lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0);