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 1.6 2005/06/13 22:55:15 joerg 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/thread2.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 <net/ethernet.h> 47 #include <net/if.h> 48 #include <net/if_arp.h> 49 50 #include <bus/pci/pcireg.h> 51 #include <bus/pci/pcivar.h> 52 53 #include <dev/netif/lnc/if_lncreg.h> 54 #include <dev/netif/lnc/if_lncvar.h> 55 56 #define AMD_VENDOR_ID 0x1022 57 #define PCI_DEVICE_ID_PCNet_PCI 0x2000 58 #define PCI_DEVICE_ID_PCHome_PCI 0x2001 59 60 #define LNC_PROBE_PRIORITY -1 61 62 static int lnc_pci_detach(device_t); 63 64 static int 65 lnc_pci_probe(device_t dev) 66 { 67 if (pci_get_vendor(dev) != AMD_VENDOR_ID) 68 return (ENXIO); 69 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); 74 break; 75 case PCI_DEVICE_ID_PCHome_PCI: 76 device_set_desc(dev, "PCHome/PCI Ethernet adapter"); 77 return(LNC_PROBE_PRIORITY); 78 break; 79 default: 80 return (ENXIO); 81 break; 82 } 83 return (ENXIO); 84 } 85 86 static void 87 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error) 88 { 89 /* Do nothing */ 90 return; 91 } 92 93 static int 94 lnc_pci_attach(device_t dev) 95 { 96 lnc_softc_t *sc = device_get_softc(dev); 97 unsigned command; 98 int rid = 0; 99 int error = 0; 100 bus_size_t lnc_mem_size; 101 102 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); 105 106 rid = PCIR_MAPS; 107 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, 108 RF_ACTIVE); 109 110 if (! sc->portres) { 111 device_printf(dev, "Cannot allocate I/O ports\n"); 112 error = ENXIO; 113 goto fail; 114 } 115 116 rid = 0; 117 sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 118 RF_ACTIVE | RF_SHAREABLE); 119 120 if (! sc->irqres) { 121 device_printf(dev, "Cannot allocate irq\n"); 122 error = ENXIO; 123 goto fail; 124 } 125 126 sc->lnc_btag = rman_get_bustag(sc->portres); 127 sc->lnc_bhandle = rman_get_bushandle(sc->portres); 128 129 /* XXX temp setting for nic */ 130 sc->nic.ic = PCnet_PCI; 131 sc->nic.ident = NE2100; 132 sc->nic.mem_mode = DMA_FIXED; 133 sc->nrdre = NRDRE; 134 sc->ntdre = NTDRE; 135 sc->rap = PCNET_RAP; 136 sc->rdp = PCNET_RDP; 137 sc->bdp = PCNET_BDP; 138 139 /* Create a DMA tag describing the ring memory we need */ 140 141 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) * 142 sizeof(struct host_ring_entry)); 143 144 lnc_mem_size += sizeof(struct init_block) + (sizeof(struct mds) * 145 (NDESC(sc->nrdre) + NDESC(sc->ntdre))) + MEM_SLEW; 146 147 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) + 148 (NDESC(sc->ntdre) * TRANSBUFSIZE); 149 150 error = bus_dma_tag_create(NULL, /* parent */ 151 1, /* alignement */ 152 0, /* boundary */ 153 BUS_SPACE_MAXADDR_24BIT, /* lowaddr */ 154 BUS_SPACE_MAXADDR, /* highaddr */ 155 NULL, NULL, /* filter, filterarg */ 156 lnc_mem_size, /* segsize */ 157 1, /* nsegments */ 158 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 159 BUS_DMA_ALLOCNOW, /* flags */ 160 &sc->dmat); 161 162 if (error) { 163 device_printf(dev, "Can't create DMA tag\n"); 164 goto fail; 165 } 166 167 error = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring, 168 BUS_DMA_WAITOK, &sc->dmamap); 169 if (error) { 170 device_printf(dev, "Couldn't allocate memory\n"); 171 goto fail; 172 } 173 174 error = bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring, 175 lnc_mem_size, lnc_alloc_callback, 176 sc->recv_ring, 0); 177 if (error) { 178 device_printf(dev, "Couldn't map receive ring\n"); 179 goto fail; 180 } 181 182 /* Call generic attach code */ 183 if (! lnc_attach_common(dev)) { 184 device_printf(dev, "Generic attach code failed\n"); 185 error = ENXIO; 186 goto fail; 187 } 188 189 error = bus_setup_intr(dev, sc->irqres, INTR_TYPE_NET, lncintr, 190 sc, &sc->intrhand, NULL); 191 if (error) { 192 device_printf(dev, "Cannot setup irq handler\n"); 193 ether_ifdetach(&sc->arpcom.ac_if); 194 goto fail; 195 } 196 197 return (0); 198 199 fail: 200 lnc_pci_detach(dev); 201 return(error); 202 } 203 204 static int 205 lnc_pci_detach(device_t dev) 206 { 207 lnc_softc_t *sc = device_get_softc(dev); 208 209 crit_enter(); 210 211 if (device_is_attached(dev)) { 212 ether_ifdetach(&sc->arpcom.ac_if); 213 lnc_stop(sc); 214 } 215 216 if (sc->intrhand) 217 bus_teardown_intr(dev, sc->irqres, sc->intrhand); 218 219 crit_exit(); 220 221 if (sc->irqres) 222 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irqres); 223 if (sc->portres) 224 bus_release_resource(dev, SYS_RES_IOPORT, PCIR_MAPS, 225 sc->portres); 226 227 if (sc->dmamap) { 228 bus_dmamap_unload(sc->dmat, sc->dmamap); 229 bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap); 230 } 231 if (sc->dmat) 232 bus_dma_tag_destroy(sc->dmat); 233 234 return (0); 235 } 236 237 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), 241 #ifdef notyet 242 DEVMETHOD(device_suspend, lnc_pci_suspend), 243 DEVMETHOD(device_resume, lnc_pci_resume), 244 DEVMETHOD(device_shutdown, lnc_pci_shutdown), 245 #endif 246 { 0, 0 } 247 }; 248 249 static driver_t lnc_pci_driver = { 250 "lnc", 251 lnc_pci_methods, 252 sizeof(struct lnc_softc), 253 }; 254 255 DRIVER_MODULE(if_lnc, pci, lnc_pci_driver, lnc_devclass, 0, 0); 256