sys/dev/pci/if_ral_pci.c

   1 /*      $NetBSD: if_ral_pci.c,v 1.13 2009/08/08 20:44:36 matt Exp $     */
   2 /*      $OpenBSD: if_ral_pci.c,v 1.6 2006/01/09 20:03:43 damien Exp $  */
   3
   4 /*-
   5  * Copyright (c) 2005, 2006
   6  *      Damien Bergamini <damien.bergamini@free.fr>
   7  *
   8  * Permission to use, copy, modify, and distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  */
  20
  21 /*
  22  * PCI front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver.
  23  */
  24 #include <sys/cdefs.h>
  25 __KERNEL_RCSID(0, "$NetBSD: if_ral_pci.c,v 1.13 2009/08/08 20:44:36 matt Exp $");
  26
  27 #include "bpfilter.h"
  28
  29 #include <sys/param.h>
  30 #include <sys/sockio.h>
  31 #include <sys/mbuf.h>
  32 #include <sys/kernel.h>
  33 #include <sys/socket.h>
  34 #include <sys/systm.h>
  35 #include <sys/malloc.h>
  36 #include <sys/device.h>
  37
  38 #include <sys/bus.h>
  39 #include <sys/intr.h>
  40
  41 #include <net/if.h>
  42 #include <net/if_dl.h>
  43 #include <net/if_media.h>
  44 #include <net/if_ether.h>
  45
  46 #include <netinet/in.h>
  47
  48 #include <net80211/ieee80211_var.h>
  49 #include <net80211/ieee80211_amrr.h>
  50 #include <net80211/ieee80211_rssadapt.h>
  51 #include <net80211/ieee80211_radiotap.h>
  52
  53 #include <dev/ic/rt2560var.h>
  54 #include <dev/ic/rt2661var.h>
  55
  56 #include <dev/pci/pcireg.h>
  57 #include <dev/pci/pcivar.h>
  58 #include <dev/pci/pcidevs.h>
  59
  60 static struct ral_opns {
  61         int     (*attach)(void *, int);
  62         int     (*detach)(void *);
  63         int     (*intr)(void *);
  64
  65 }  ral_rt2560_opns = {
  66         rt2560_attach,
  67         rt2560_detach,
  68         rt2560_intr
  69
  70 }, ral_rt2661_opns = {
  71         rt2661_attach,
  72         rt2661_detach,
  73         rt2661_intr
  74 };
  75
  76 struct ral_pci_softc {
  77         union {
  78                 struct rt2560_softc     sc_rt2560;
  79                 struct rt2661_softc     sc_rt2661;
  80         } u;
  81 #define sc_sc   u.sc_rt2560
  82
  83         /* PCI specific goo */
  84         struct ral_opns         *sc_opns;
  85         pci_chipset_tag_t       sc_pc;
  86         void                    *sc_ih;
  87         bus_size_t              sc_mapsize;
  88 };
  89
  90 /* Base Address Register */
  91 #define RAL_PCI_BAR0    0x10
  92
  93 int     ral_pci_match(device_t, cfdata_t, void *);
  94 void    ral_pci_attach(device_t, device_t, void *);
  95 int     ral_pci_detach(device_t, int);
  96
  97 CFATTACH_DECL(ral_pci, sizeof (struct ral_pci_softc),
  98         ral_pci_match, ral_pci_attach, ral_pci_detach, NULL);
  99
 100 int
 101 ral_pci_match(device_t parent, cfdata_t cfdata,
 102     void *aux)
 103 {
 104         struct pci_attach_args *pa = aux;
 105
 106         if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_RALINK) {
 107                 switch (PCI_PRODUCT(pa->pa_id)) {
 108                         case PCI_PRODUCT_RALINK_RT2560:
 109                         case PCI_PRODUCT_RALINK_RT2561:
 110                         case PCI_PRODUCT_RALINK_RT2561S:
 111                         case PCI_PRODUCT_RALINK_RT2661:
 112                                 return 1;
 113                         default:
 114                                 return 0;
 115                 }
 116         }
 117
 118         return 0;
 119 }
 120
 121 void
 122 ral_pci_attach(device_t parent, device_t self, void *aux)
 123 {
 124         struct ral_pci_softc *psc = device_private(self);
 125         struct rt2560_softc *sc = &psc->sc_sc;
 126         struct pci_attach_args *pa = aux;
 127         const char *intrstr;
 128         char devinfo[256];
 129         bus_addr_t base;
 130         pci_intr_handle_t ih;
 131         pcireg_t reg;
 132         int error, revision;
 133
 134         pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
 135         revision = PCI_REVISION(pa->pa_class);
 136         aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision);
 137
 138         psc->sc_opns = (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_RALINK_RT2560) ?
 139             &ral_rt2560_opns : &ral_rt2661_opns;
 140
 141         sc->sc_dmat = pa->pa_dmat;
 142         psc->sc_pc = pa->pa_pc;
 143
 144         /* enable the appropriate bits in the PCI CSR */
 145         reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
 146         reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE;
 147         pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg);
 148         pa->pa_flags |= PCI_FLAGS_MEM_ENABLED;
 149
 150         /* map control/status registers */
 151         error = pci_mapreg_map(pa, RAL_PCI_BAR0, PCI_MAPREG_TYPE_MEM |
 152             PCI_MAPREG_MEM_TYPE_32BIT, 0, &sc->sc_st, &sc->sc_sh, &base,
 153             &psc->sc_mapsize);
 154
 155         if (error != 0) {
 156                 aprint_error(": could not map memory space\n");
 157                 return;
 158         }
 159
 160         if (pci_intr_map(pa, &ih) != 0) {
 161                 aprint_error(": could not map interrupt\n");
 162                 return;
 163         }
 164
 165         intrstr = pci_intr_string(psc->sc_pc, ih);
 166         psc->sc_ih = pci_intr_establish(psc->sc_pc, ih, IPL_NET,
 167             psc->sc_opns->intr, sc);
 168
 169         if (psc->sc_ih == NULL) {
 170                 aprint_error(": could not establish interrupt");
 171                 if (intrstr != NULL)
 172                         aprint_error(" at %s", intrstr);
 173                 aprint_error("\n");
 174                 return;
 175         }
 176         aprint_normal_dev(&sc->sc_dev, "interrupting at %s\n", intrstr);
 177
 178         (*psc->sc_opns->attach)(sc, PCI_PRODUCT(pa->pa_id));
 179 }
 180
 181 int
 182 ral_pci_detach(device_t self, int flags)
 183 {
 184         struct ral_pci_softc *psc = device_private(self);
 185         struct rt2560_softc *sc = &psc->sc_sc;
 186
 187         (*psc->sc_opns->detach)(sc);
 188         pci_intr_disestablish(psc->sc_pc, psc->sc_ih);
 189
 190         return 0;
 191 }
 192