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 1.8 2005/11/28 17:13:43 dillon 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/serialize.h>
41 #include <machine/bus.h>
42 #include <machine/resource.h>
46 #include <sys/thread2.h>
48 #include <net/ethernet.h>
50 #include <net/if_arp.h>
52 #include <bus/pci/pcireg.h>
53 #include <bus/pci/pcivar.h>
55 #include <dev/netif/lnc/if_lncreg.h>
56 #include <dev/netif/lnc/if_lncvar.h>
58 #define AMD_VENDOR_ID 0x1022
59 #define PCI_DEVICE_ID_PCNet_PCI 0x2000
60 #define PCI_DEVICE_ID_PCHome_PCI 0x2001
62 #define LNC_PROBE_PRIORITY -1
64 static int lnc_pci_detach(device_t);
67 lnc_pci_probe(device_t dev)
69 if (pci_get_vendor(dev) != AMD_VENDOR_ID)
72 switch(pci_get_device(dev)) {
73 case PCI_DEVICE_ID_PCNet_PCI:
74 device_set_desc(dev, "PCNet/PCI Ethernet adapter");
75 return(LNC_PROBE_PRIORITY);
77 case PCI_DEVICE_ID_PCHome_PCI:
78 device_set_desc(dev, "PCHome/PCI Ethernet adapter");
79 return(LNC_PROBE_PRIORITY);
89 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
96 lnc_pci_attach(device_t dev)
98 lnc_softc_t *sc = device_get_softc(dev);
102 bus_size_t lnc_mem_size;
104 command = pci_read_config(dev, PCIR_COMMAND, 4);
105 command |= PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN;
106 pci_write_config(dev, PCIR_COMMAND, command, 4);
109 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid,
113 device_printf(dev, "Cannot allocate I/O ports\n");
119 sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
120 RF_ACTIVE | RF_SHAREABLE);
123 device_printf(dev, "Cannot allocate irq\n");
128 sc->lnc_btag = rman_get_bustag(sc->portres);
129 sc->lnc_bhandle = rman_get_bushandle(sc->portres);
131 /* XXX temp setting for nic */
132 sc->nic.ic = PCnet_PCI;
133 sc->nic.ident = NE2100;
134 sc->nic.mem_mode = DMA_FIXED;
141 /* Create a DMA tag describing the ring memory we need */
143 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
144 sizeof(struct host_ring_entry));
146 lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
147 (NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW;
149 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
150 (NDESC(sc->ntdre) * TRANSBUFSIZE);
152 error = bus_dma_tag_create(NULL, /* parent */
155 BUS_SPACE_MAXADDR_24BIT, /* lowaddr */
156 BUS_SPACE_MAXADDR, /* highaddr */
157 NULL, NULL, /* filter, filterarg */
158 lnc_mem_size, /* segsize */
160 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
161 BUS_DMA_ALLOCNOW, /* flags */
165 device_printf(dev, "Can't create DMA tag\n");
169 error = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
170 BUS_DMA_WAITOK, &sc->dmamap);
172 device_printf(dev, "Couldn't allocate memory\n");
176 error = bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring,
177 lnc_mem_size, lnc_alloc_callback,
180 device_printf(dev, "Couldn't map receive ring\n");
184 /* Call generic attach code */
185 if (! lnc_attach_common(dev)) {
186 device_printf(dev, "Generic attach code failed\n");
191 error = bus_setup_intr(dev, sc->irqres, INTR_NETSAFE, lncintr,
193 sc->arpcom.ac_if.if_serializer);
195 device_printf(dev, "Cannot setup irq handler\n");
196 ether_ifdetach(&sc->arpcom.ac_if);
208 lnc_pci_detach(device_t dev)
210 lnc_softc_t *sc = device_get_softc(dev);
212 lwkt_serialize_enter(sc->arpcom.ac_if.if_serializer);
214 if (device_is_attached(dev)) {
215 ether_ifdetach(&sc->arpcom.ac_if);
220 bus_teardown_intr(dev, sc->irqres, sc->intrhand);
223 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irqres);
225 bus_release_resource(dev, SYS_RES_IOPORT, PCIR_MAPS,
229 bus_dmamap_unload(sc->dmat, sc->dmamap);
230 bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap);
233 bus_dma_tag_destroy(sc->dmat);
235 lwkt_serialize_exit(sc->arpcom.ac_if.if_serializer);
240 static device_method_t lnc_pci_methods[] = {
241 DEVMETHOD(device_probe, lnc_pci_probe),
242 DEVMETHOD(device_attach, lnc_pci_attach),
243 DEVMETHOD(device_detach, lnc_pci_detach),
245 DEVMETHOD(device_suspend, lnc_pci_suspend),
246 DEVMETHOD(device_resume, lnc_pci_resume),
247 DEVMETHOD(device_shutdown, lnc_pci_shutdown),
252 static driver_t lnc_pci_driver = {
255 sizeof(struct lnc_softc),
258 DRIVER_MODULE(if_lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0);