root/dev/cardbus/if_atw_cardbus.c

DEFINITIONS

1. atw_cardbus_match
2. atw_cardbus_attach
3. atw_cardbus_detach
4. atw_cardbus_enable
5. atw_cardbus_disable
6. atw_cardbus_power
7. atw_cardbus_setup

    1 /*      $OpenBSD: if_atw_cardbus.c,v 1.14 2006/10/12 16:35:52 grange Exp $      */
    2 /*      $NetBSD: if_atw_cardbus.c,v 1.9 2004/07/23 07:07:55 dyoung Exp $        */
    4 /*-
    5  * Copyright (c) 1999, 2000, 2003 The NetBSD Foundation, Inc.
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to The NetBSD Foundation
    9  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   10  * NASA Ames Research Center.  This code was adapted for the ADMtek ADM8211
   11  * by David Young.
   12  *
   13  * Redistribution and use in source and binary forms, with or without
   14  * modification, are permitted provided that the following conditions
   15  * are met:
   16  * 1. Redistributions of source code must retain the above copyright
   17  *    notice, this list of conditions and the following disclaimer.
   18  * 2. Redistributions in binary form must reproduce the above copyright
   19  *    notice, this list of conditions and the following disclaimer in the
   20  *    documentation and/or other materials provided with the distribution.
   21  * 3. All advertising materials mentioning features or use of this software
   22  *    must display the following acknowledgement:
   23  *      This product includes software developed by the NetBSD
   24  *      Foundation, Inc. and its contributors.
   25  * 4. Neither the name of The NetBSD Foundation nor the names of its
   26  *    contributors may be used to endorse or promote products derived
   27  *    from this software without specific prior written permission.
   28  *
   29  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   30  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   31  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   32  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   33  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   34  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   35  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   36  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   37  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   38  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   39  * POSSIBILITY OF SUCH DAMAGE.
   40  */
   42 /*
   43  * CardBus bus front-end for the ADMtek ADM8211 802.11 MAC/BBP driver.
   44  */
   46 #include "bpfilter.h"
   48 #include <sys/param.h>
   49 #include <sys/systm.h> 
   50 #include <sys/mbuf.h>   
   51 #include <sys/malloc.h>
   52 #include <sys/kernel.h>
   53 #include <sys/socket.h>
   54 #include <sys/ioctl.h>
   55 #include <sys/errno.h>
   56 #include <sys/device.h>
   58 #include <machine/endian.h>
   60 #include <net/if.h>
   61 #include <net/if_dl.h>
   62 #include <net/if_media.h>
   64 #ifdef INET
   65 #include <netinet/in.h>
   66 #include <netinet/if_ether.h>
   67 #endif
   69 #include <net80211/ieee80211_radiotap.h>
   70 #include <net80211/ieee80211_var.h>
   72 #if NBPFILTER > 0 
   73 #include <net/bpf.h>
   74 #endif 
   76 #include <machine/bus.h>
   77 #include <machine/intr.h>
   79 #include <dev/ic/atwreg.h>
   80 #include <dev/ic/rf3000reg.h>
   81 #include <dev/ic/si4136reg.h>
   82 #include <dev/ic/atwvar.h>
   84 #include <dev/pci/pcivar.h>
   85 #include <dev/pci/pcireg.h>
   86 #include <dev/pci/pcidevs.h>
   88 #include <dev/cardbus/cardbusvar.h>
   90 /*
   91  * PCI configuration space registers used by the ADM8211.
   92  */
   93 #define ATW_PCI_IOBA            0x10    /* i/o mapped base */
   94 #define ATW_PCI_MMBA            0x14    /* memory mapped base */
   96 struct atw_cardbus_softc {
   97         struct atw_softc sc_atw;        /* real ADM8211 softc */
   99         /* CardBus-specific goo. */
  100         void    *sc_ih;                 /* interrupt handle */
cardbus_devfunc_t sc_ct;        /* our CardBus devfuncs */
cardbustag_t sc_tag;            /* our CardBus tag */
  103         int     sc_csr;                 /* CSR bits */
bus_size_t sc_mapsize;          /* the size of mapped bus space
  105                                            region */
  107         int     sc_cben;                /* CardBus enables */
  108         int     sc_bar_reg;             /* which BAR to use */
pcireg_t sc_bar_val;            /* value of the BAR */
  111         int     sc_intrline;            /* interrupt line */
  112 };
  114 int     atw_cardbus_match(struct device *, void *, void *);
  115 void    atw_cardbus_attach(struct device *, struct device *, void *);
  116 int     atw_cardbus_detach(struct device *, int);
  118 struct cfattach atw_cardbus_ca = {
  119         sizeof(struct atw_cardbus_softc), atw_cardbus_match, atw_cardbus_attach,
atw_cardbus_detach
  121 };
  123 void    atw_cardbus_setup(struct atw_cardbus_softc *);
  125 int     atw_cardbus_enable(struct atw_softc *);
  126 void    atw_cardbus_disable(struct atw_softc *);
  127 void    atw_cardbus_power(struct atw_softc *, int);
  129 const struct cardbus_matchid atw_cardbus_devices[] = {
  130         { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211 },
  131         { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRSHPW796 },
  132 };
  134 int
atw_cardbus_match(struct device *parent, void *match, void *aux)
  136 {
  137         return (cardbus_matchbyid((struct cardbus_attach_args *)aux,
atw_cardbus_devices,
  139             sizeof(atw_cardbus_devices)/sizeof(atw_cardbus_devices[0])));
  140 }
  142 void
atw_cardbus_attach(struct device *parent, struct device *self, void *aux)
  144 {
  145         struct atw_cardbus_softc *csc = (void *)self;
  146         struct atw_softc *sc = &csc->sc_atw;
  147         struct cardbus_attach_args *ca = aux;
cardbus_devfunc_t ct = ca->ca_ct;
bus_addr_t adr;
sc->sc_dmat = ca->ca_dmat;
csc->sc_ct = ct;
csc->sc_tag = ca->ca_tag;
  155         /*
  156          * Power management hooks.
  157          */
sc->sc_enable = atw_cardbus_enable;
sc->sc_disable = atw_cardbus_disable;
sc->sc_power = atw_cardbus_power;
  162         /* Get revision info. */
sc->sc_rev = PCI_REVISION(ca->ca_class);
  165 #if 0
printf(": signature %08x\n%s",
cardbus_conf_read(ct->ct_cc, ct->ct_cf, csc->sc_tag, 0x80),
sc->sc_dev.dv_xname);
  169 #endif
  171         /*
  172          * Map the device.
  173          */
csc->sc_csr = CARDBUS_COMMAND_MASTER_ENABLE;
  175         if (Cardbus_mapreg_map(ct, ATW_PCI_MMBA,
CARDBUS_MAPREG_TYPE_MEM, 0, &sc->sc_st, &sc->sc_sh, &adr,
  177             &csc->sc_mapsize) == 0) {
  178 #if 0
printf(": atw_cardbus_attach mapped %d bytes mem space\n%s",
csc->sc_mapsize, sc->sc_dev.dv_xname);
  181 #endif
csc->sc_cben = CARDBUS_MEM_ENABLE;
csc->sc_csr |= CARDBUS_COMMAND_MEM_ENABLE;
csc->sc_bar_reg = ATW_PCI_MMBA;
csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_MEM;
  186         } else if (Cardbus_mapreg_map(ct, ATW_PCI_IOBA,
CARDBUS_MAPREG_TYPE_IO, 0, &sc->sc_st, &sc->sc_sh, &adr,
  188             &csc->sc_mapsize) == 0) {
  189 #if 0
printf(": atw_cardbus_attach mapped %d bytes I/O space\n%s",
csc->sc_mapsize, sc->sc_dev.dv_xname);
  192 #endif
csc->sc_cben = CARDBUS_IO_ENABLE;
csc->sc_csr |= CARDBUS_COMMAND_IO_ENABLE;
csc->sc_bar_reg = ATW_PCI_IOBA;
csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
  197         } else {
printf(": unable to map device registers\n");
  199                 return;
  200         }
  202         /*
  203          * Bring the chip out of powersave mode and initialize the
  204          * configuration registers.
  205          */
atw_cardbus_setup(csc);
  208         /* Remember which interrupt line. */
csc->sc_intrline = ca->ca_intrline;
printf(": revision %d.%d: irq %d\n",
  212             (sc->sc_rev >> 4) & 0xf, sc->sc_rev & 0xf, csc->sc_intrline);
  213 #if 0
  214         /*
  215          * The CardBus cards will make it to store-and-forward mode as
  216          * soon as you put them under any kind of load, so just start
  217          * out there.
  218          */
sc->sc_txthresh = 3; /* TBD name constant */
  220 #endif
  222         /*
  223          * Finish off the attach.
  224          */
atw_attach(sc);
ATW_WRITE(sc, ATW_FER, ATW_FER_INTR);
  229         /*
  230          * Power down the socket.
  231          */
Cardbus_function_disable(csc->sc_ct);
  233 }
  235 int
atw_cardbus_detach(struct device *self, int flags)
  237 {
  238         struct atw_cardbus_softc *csc = (void *)self;
  239         struct atw_softc *sc = &csc->sc_atw;
  240         struct cardbus_devfunc *ct = csc->sc_ct;
  241         int rv;
  243 #if defined(DIAGNOSTIC)
  244         if (ct == NULL)
panic("%s: data structure lacks", sc->sc_dev.dv_xname);
  246 #endif
rv = atw_detach(sc);
  249         if (rv)
  250                 return (rv);
  252         /*
  253          * Unhook the interrupt handler.
  254          */
  255         if (csc->sc_ih != NULL)
cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, csc->sc_ih);
  258         /*
  259          * Release bus space and close window.
  260          */
  261         if (csc->sc_bar_reg != 0)
Cardbus_mapreg_unmap(ct, csc->sc_bar_reg,
sc->sc_st, sc->sc_sh, csc->sc_mapsize);
  265         return (0);
  266 }
  268 int
atw_cardbus_enable(struct atw_softc *sc)
  270 {
  271         struct atw_cardbus_softc *csc = (void *) sc;
cardbus_devfunc_t ct = csc->sc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
  276         /*
  277          * Power on the socket.
  278          */
Cardbus_function_enable(ct);
  281         /*
  282          * Set up the PCI configuration registers.
  283          */
atw_cardbus_setup(csc);
  286         /*
  287          * Map and establish the interrupt.
  288          */
csc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline, IPL_NET,
atw_intr, sc, sc->sc_dev.dv_xname);
  291         if (csc->sc_ih == NULL) {
printf("%s: unable to establish interrupt at %d\n",
sc->sc_dev.dv_xname, csc->sc_intrline);
Cardbus_function_disable(csc->sc_ct);
  295                 return (1);
  296         }
  298         return (0);
  299 }
  301 void
atw_cardbus_disable(struct atw_softc *sc)
  303 {
  304         struct atw_cardbus_softc *csc = (void *) sc;
cardbus_devfunc_t ct = csc->sc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
  309         /* Unhook the interrupt handler. */
cardbus_intr_disestablish(cc, cf, csc->sc_ih);
csc->sc_ih = NULL;
  313         /* Power down the socket. */
Cardbus_function_disable(ct);
  315 }
  317 void
atw_cardbus_power(struct atw_softc *sc, int why)
  319 {
  320         if (why == PWR_RESUME)
atw_enable(sc);
  322 }
  324 void
atw_cardbus_setup(struct atw_cardbus_softc *csc)
  326 {
  327 #ifdef notyet
  328         struct atw_softc *sc = &csc->sc_atw;
  329 #endif
cardbus_devfunc_t ct = csc->sc_ct;
cardbus_chipset_tag_t cc = ct->ct_cc;
cardbus_function_tag_t cf = ct->ct_cf;
pcireg_t reg;
  335 #ifdef notyet
  336         (void)cardbus_setpowerstate(sc->sc_dev.dv_xname, ct, csc->sc_tag,
PCI_PWR_D0);
  338 #endif
  340         /* Program the BAR. */
cardbus_conf_write(cc, cf, csc->sc_tag, csc->sc_bar_reg,
csc->sc_bar_val);
  344         /* Make sure the right access type is on the CardBus bridge. */
  345         (*ct->ct_cf->cardbus_ctrl)(cc, csc->sc_cben);
  346         (*ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
  348         /* Enable the appropriate bits in the PCI CSR. */
reg = cardbus_conf_read(cc, cf, csc->sc_tag,
CARDBUS_COMMAND_STATUS_REG);
reg &= ~(CARDBUS_COMMAND_IO_ENABLE|CARDBUS_COMMAND_MEM_ENABLE);
reg |= csc->sc_csr;
cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
reg);
  356         /*
  357          * Make sure the latency timer is set to some reasonable
  358          * value.
  359          */
reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG);
  361         if (CARDBUS_LATTIMER(reg) < 0x20) {
reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
reg |= (0x20 << CARDBUS_LATTIMER_SHIFT);
cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg);
  365         }
  366 }