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
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
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/module.h>
41 #include <machine/bus.h>
42 #include <machine/resource.h>
46 #include <net/ethernet.h>
48 #include <net/if_arp.h>
50 #include <dev/pci/pcireg.h>
51 #include <dev/pci/pcivar.h>
53 #include <dev/lnc/if_lncreg.h>
54 #include <dev/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
61 lnc_pci_probe(device_t dev)
63 if (pci_get_vendor(dev) != AMD_VENDOR_ID)
66 switch(pci_get_device(dev)) {
67 case PCI_DEVICE_ID_PCNet_PCI:
68 device_set_desc(dev, "PCNet/PCI Ethernet adapter");
69 return(BUS_PROBE_DEFAULT);
71 case PCI_DEVICE_ID_PCHome_PCI:
72 device_set_desc(dev, "PCHome/PCI Ethernet adapter");
73 return(BUS_PROBE_DEFAULT);
83 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
90 lnc_pci_attach(device_t dev)
92 lnc_softc_t *sc = device_get_softc(dev);
95 bus_size_t lnc_mem_size;
97 device_printf(dev, "Attaching %s\n", device_get_desc(dev));
99 command = pci_read_config(dev, PCIR_COMMAND, 4);
100 command |= PCIM_CMD_PORTEN | PCIM_CMD_BUSMASTEREN;
101 pci_write_config(dev, PCIR_COMMAND, command, 4);
103 sc->portrid = PCIR_BAR(0);
104 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
108 device_printf(dev, "Cannot allocate I/O ports\n");
109 lnc_release_resources(dev);
113 sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
114 RF_ACTIVE|RF_SHAREABLE);
117 device_printf(dev, "Cannot allocate irq\n");
118 lnc_release_resources(dev);
121 err = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
124 device_printf(dev, "Cannot setup irq handler\n");
125 lnc_release_resources(dev);
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 err = 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 */
162 busdma_lock_mutex, /* lockfunc */
163 &Giant, /* lockarg */
167 device_printf(dev, "Can't create DMA tag\n");
168 lnc_release_resources(dev);
172 err = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
173 BUS_DMA_NOWAIT, &sc->dmamap);
176 device_printf(dev, "Couldn't allocate memory\n");
177 lnc_release_resources(dev);
181 bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, lnc_mem_size,
182 lnc_alloc_callback, sc->recv_ring, BUS_DMA_NOWAIT);
184 /* Call generic attach code */
185 if (! lnc_attach_common(dev)) {
186 device_printf(dev, "Generic attach code failed\n");
187 lnc_release_resources(dev);
193 static device_method_t lnc_pci_methods[] = {
194 DEVMETHOD(device_probe, lnc_pci_probe),
195 DEVMETHOD(device_attach, lnc_pci_attach),
196 DEVMETHOD(device_detach, lnc_detach_common),
198 DEVMETHOD(device_suspend, lnc_pci_suspend),
199 DEVMETHOD(device_resume, lnc_pci_resume),
200 DEVMETHOD(device_shutdown, lnc_pci_shutdown),
205 static driver_t lnc_pci_driver = {
208 sizeof(struct lnc_softc),
211 DRIVER_MODULE(lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0);
212 MODULE_DEPEND(lnc, pci, 1, 1, 1);
213 MODULE_DEPEND(lnc, ether, 1, 1, 1);