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
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9 * notice, this list of conditions and the following disclaimer,
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13 * notice, this list of conditions and the following disclaimer in the
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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.
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25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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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 1.2 2004/03/14 15:36:50 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>
40 #include <machine/bus.h>
41 #include <machine/resource.h>
45 #include <net/ethernet.h>
47 #include <net/if_arp.h>
49 #include <bus/pci/pcireg.h>
50 #include <bus/pci/pcivar.h>
52 #include <dev/netif/lnc/if_lncreg.h>
53 #include <dev/netif/lnc/if_lncvar.h>
55 #define AMD_VENDOR_ID 0x1022
56 #define PCI_DEVICE_ID_PCNet_PCI 0x2000
57 #define PCI_DEVICE_ID_PCHome_PCI 0x2001
59 #define LNC_PROBE_PRIORITY -1
62 lnc_pci_probe(device_t dev)
64 if (pci_get_vendor(dev) != AMD_VENDOR_ID)
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);
72 case PCI_DEVICE_ID_PCHome_PCI:
73 device_set_desc(dev, "PCHome/PCI Ethernet adapter");
74 return(LNC_PROBE_PRIORITY);
84 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
91 lnc_pci_attach(device_t dev)
93 lnc_softc_t *sc = device_get_softc(dev);
97 bus_size_t lnc_mem_size;
99 device_printf(dev, "Attaching %s\n", device_get_desc(dev));
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);
106 sc->portres = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0, ~0, 1,
110 device_printf(dev, "Cannot allocate I/O ports\n");
113 sc->irqres = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
114 RF_ACTIVE|RF_SHAREABLE);
117 device_printf(dev, "Cannot allocate irq\n");
119 err = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr,
122 device_printf(dev, "Cannot setup irq handler\n");
124 sc->lnc_btag = rman_get_bustag(sc->portres);
125 sc->lnc_bhandle = rman_get_bushandle(sc->portres);
127 /* XXX temp setting for nic */
128 sc->nic.ic = PCnet_PCI;
129 sc->nic.ident = NE2100;
130 sc->nic.mem_mode = DMA_FIXED;
137 /* Create a DMA tag describing the ring memory we need */
139 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
140 sizeof(struct host_ring_entry));
142 lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) *
143 (NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW;
145 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
146 (NDESC(sc->ntdre) * TRANSBUFSIZE);
148 err = bus_dma_tag_create(NULL, /* parent */
151 BUS_SPACE_MAXADDR, /* lowaddr */
152 BUS_SPACE_MAXADDR, /* highaddr */
153 NULL, NULL, /* filter, filterarg */
154 lnc_mem_size, /* segsize */
156 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
161 device_printf(dev, "Can't create DMA tag\n");
162 /* XXX need to free currently allocated resources here */
166 err = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
167 BUS_DMA_NOWAIT, &sc->dmamap);
170 device_printf(dev, "Couldn't allocate memory\n");
171 /* XXX need to free currently allocated resources here */
175 bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, lnc_mem_size,
176 lnc_alloc_callback, sc->recv_ring, BUS_DMA_NOWAIT);
178 /* Call generic attach code */
179 if (! lnc_attach_common(dev)) {
180 device_printf(dev, "Generic attach code failed\n");
186 lnc_pci_detach(device_t dev)
188 lnc_softc_t *sc = device_get_softc(dev);
191 ether_ifdetach(&sc->arpcom.ac_if);
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);
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);
206 static 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),
211 DEVMETHOD(device_suspend, lnc_pci_suspend),
212 DEVMETHOD(device_resume, lnc_pci_resume),
213 DEVMETHOD(device_shutdown, lnc_pci_shutdown),
218 static driver_t lnc_pci_driver = {
221 sizeof(struct lnc_softc),
224 DRIVER_MODULE(if_lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0);