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 $ 31 * $DragonFly: src/sys/dev/netif/lnc/if_lnc_pci.c,v 1.9 2005/12/31 14:07:59 sephe Exp $ 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 #include <sys/serialize.h> 40 41 #include <machine/bus.h> 42 #include <machine/resource.h> 43 #include <sys/bus.h> 44 #include <sys/rman.h> 45 46 #include <sys/thread2.h> 47 48 #include <net/ethernet.h> 49 #include <net/if.h> 50 #include <net/if_arp.h> 51 52 #include <bus/pci/pcireg.h> 53 #include <bus/pci/pcivar.h> 54 55 #include <dev/netif/lnc/if_lncreg.h> 56 #include <dev/netif/lnc/if_lncvar.h> 57 58 #define AMD_VENDOR_ID 0x1022 59 #define PCI_DEVICE_ID_PCNet_PCI 0x2000 60 #define PCI_DEVICE_ID_PCHome_PCI 0x2001 61 62 #define LNC_PROBE_PRIORITY -1 63 64 static int lnc_pci_detach(device_t); 65 66 static int 67 lnc_pci_probe(device_t dev) 68 { 69 if (pci_get_vendor(dev) != AMD_VENDOR_ID) 70 return (ENXIO); 71 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); 76 break; 77 case PCI_DEVICE_ID_PCHome_PCI: 78 device_set_desc(dev, "PCHome/PCI Ethernet adapter"); 79 return(LNC_PROBE_PRIORITY); 80 break; 81 default: 82 return (ENXIO); 83 break; 84 } 85 return (ENXIO); 86 } 87 88 static void 89 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error) 90 { 91 /* Do nothing */ 92 return; 93 } 94 95 static int 96 lnc_pci_attach(device_t dev) 97 { 98 lnc_softc_t *sc = device_get_softc(dev); 99 unsigned command; 100 int rid = 0; 101 int error = 0; 102 bus_size_t lnc_mem_size; 103 104 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); 107 108 rid = PCIR_MAPS; 109 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, 110 RF_ACTIVE); 111 112 if (! sc->portres) { 113 device_printf(dev, "Cannot allocate I/O ports\n"); 114 error = ENXIO; 115 goto fail; 116 } 117 118 rid = 0; 119 sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 120 RF_ACTIVE | RF_SHAREABLE); 121 122 if (! sc->irqres) { 123 device_printf(dev, "Cannot allocate irq\n"); 124 error = ENXIO; 125 goto fail; 126 } 127 128 sc->lnc_btag = rman_get_bustag(sc->portres); 129 sc->lnc_bhandle = rman_get_bushandle(sc->portres); 130 131 /* XXX temp setting for nic */ 132 sc->nic.ic = PCnet_PCI; 133 sc->nic.ident = NE2100; 134 sc->nic.mem_mode = DMA_FIXED; 135 sc->nrdre = NRDRE; 136 sc->ntdre = NTDRE; 137 sc->rap = PCNET_RAP; 138 sc->rdp = PCNET_RDP; 139 sc->bdp = PCNET_BDP; 140 141 /* Create a DMA tag describing the ring memory we need */ 142 143 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) * 144 sizeof(struct host_ring_entry)); 145 146 lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) * 147 (NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW; 148 149 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) + 150 (NDESC(sc->ntdre) * TRANSBUFSIZE); 151 152 error = bus_dma_tag_create(NULL, /* parent */ 153 1, /* alignement */ 154 0, /* boundary */ 155 BUS_SPACE_MAXADDR_24BIT, /* lowaddr */ 156 BUS_SPACE_MAXADDR, /* highaddr */ 157 NULL, NULL, /* filter, filterarg */ 158 lnc_mem_size, /* segsize */ 159 1, /* nsegments */ 160 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 161 BUS_DMA_ALLOCNOW, /* flags */ 162 &sc->dmat); 163 164 if (error) { 165 device_printf(dev, "Can't create DMA tag\n"); 166 goto fail; 167 } 168 169 error = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring, 170 BUS_DMA_WAITOK, &sc->dmamap); 171 if (error) { 172 device_printf(dev, "Couldn't allocate memory\n"); 173 goto fail; 174 } 175 176 error = bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, 177 lnc_mem_size, lnc_alloc_callback, 178 sc->recv_ring, 0); 179 if (error) { 180 device_printf(dev, "Couldn't map receive ring\n"); 181 goto fail; 182 } 183 184 /* Call generic attach code */ 185 if (! lnc_attach_common(dev)) { 186 device_printf(dev, "Generic attach code failed\n"); 187 error = ENXIO; 188 goto fail; 189 } 190 191 error = bus_setup_intr(dev, sc->irqres, INTR_NETSAFE, lncintr, 192 sc, &sc->intrhand, 193 sc->arpcom.ac_if.if_serializer); 194 if (error) { 195 device_printf(dev, "Cannot setup irq handler\n"); 196 ether_ifdetach(&sc->arpcom.ac_if); 197 goto fail; 198 } 199 200 return (0); 201 202 fail: 203 lnc_pci_detach(dev); 204 return(error); 205 } 206 207 static int 208 lnc_pci_detach(device_t dev) 209 { 210 lnc_softc_t *sc = device_get_softc(dev); 211 212 213 if (device_is_attached(dev)) { 214 lwkt_serialize_enter(sc->arpcom.ac_if.if_serializer); 215 lnc_stop(sc); 216 bus_teardown_intr(dev, sc->irqres, sc->intrhand); 217 lwkt_serialize_exit(sc->arpcom.ac_if.if_serializer); 218 219 ether_ifdetach(&sc->arpcom.ac_if); 220 } 221 222 if (sc->irqres) 223 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irqres); 224 if (sc->portres) 225 bus_release_resource(dev, SYS_RES_IOPORT, PCIR_MAPS, 226 sc->portres); 227 228 if (sc->dmamap) { 229 bus_dmamap_unload(sc->dmat, sc->dmamap); 230 bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap); 231 } 232 if (sc->dmat) 233 bus_dma_tag_destroy(sc->dmat); 234 235 return (0); 236 } 237 238 static device_method_t lnc_pci_methods[] = { 239 DEVMETHOD(device_probe, lnc_pci_probe), 240 DEVMETHOD(device_attach, lnc_pci_attach), 241 DEVMETHOD(device_detach, lnc_pci_detach), 242 #ifdef notyet 243 DEVMETHOD(device_suspend, lnc_pci_suspend), 244 DEVMETHOD(device_resume, lnc_pci_resume), 245 DEVMETHOD(device_shutdown, lnc_pci_shutdown), 246 #endif 247 { 0, 0 } 248 }; 249 250 static driver_t lnc_pci_driver = { 251 "lnc", 252 lnc_pci_methods, 253 sizeof(struct lnc_softc), 254 }; 255 256 DRIVER_MODULE(if_lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0); 257