290 lines
8.1 KiB
C
290 lines
8.1 KiB
C
/* $NetBSD: if_atw_pci.c,v 1.1 2003/07/06 22:58:10 dyoung Exp $ */
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/*-
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* Copyright (c) 1998, 1999, 2000, 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center; Charles M. Hannum; and David Young.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* PCI bus front-end for the ADMtek ADM8211 802.11 MAC/BBP chip.
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*
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* Derived from the ``Tulip'' PCI bus front-end.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_atw_pci.c,v 1.1 2003/07/06 22:58:10 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <machine/endian.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_ether.h>
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#include <net/if_ieee80211.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/ic/atwreg.h>
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#include <dev/ic/atwvar.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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/*
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* PCI configuration space registers used by the ADM8211.
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*/
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#define ATW_PCI_IOBA 0x10 /* i/o mapped base */
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#define ATW_PCI_MMBA 0x14 /* memory mapped base */
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struct atw_pci_softc {
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struct atw_softc sc_atw; /* real ADM8211 softc */
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/* PCI-specific goo. */
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void *sc_ih; /* interrupt handle */
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pci_chipset_tag_t sc_pc; /* our PCI chipset */
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pcitag_t sc_pcitag; /* our PCI tag */
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};
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int atw_pci_match __P((struct device *, struct cfdata *, void *));
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void atw_pci_attach __P((struct device *, struct device *, void *));
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CFATTACH_DECL(atw_pci, sizeof(struct atw_pci_softc),
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atw_pci_match, atw_pci_attach, NULL, NULL);
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const struct atw_pci_product {
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u_int32_t app_vendor; /* PCI vendor ID */
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u_int32_t app_product; /* PCI product ID */
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const char *app_product_name;
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} atw_pci_products[] = {
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{ PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_ADM8211,
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"ADMtek ADM8211 802.11 MAC/BBP" },
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{ 0, 0, NULL },
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};
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const struct atw_pci_product *atw_pci_lookup
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__P((const struct pci_attach_args *));
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const struct atw_pci_product *
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atw_pci_lookup(pa)
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const struct pci_attach_args *pa;
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{
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const struct atw_pci_product *app;
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for (app = atw_pci_products;
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app->app_product_name != NULL;
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app++) {
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if (PCI_VENDOR(pa->pa_id) == app->app_vendor &&
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PCI_PRODUCT(pa->pa_id) == app->app_product)
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return (app);
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}
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return (NULL);
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}
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int
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atw_pci_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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if (atw_pci_lookup(pa) != NULL)
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return (1); /* beat if_de.c */
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return (0);
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}
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void
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atw_pci_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct atw_pci_softc *psc = (void *) self;
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struct atw_softc *sc = &psc->sc_atw;
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struct pci_attach_args *pa = aux;
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pci_chipset_tag_t pc = pa->pa_pc;
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pci_intr_handle_t ih;
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const char *intrstr = NULL;
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bus_space_tag_t iot, memt;
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bus_space_handle_t ioh, memh;
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int ioh_valid, memh_valid;
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const struct atw_pci_product *app;
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pcireg_t reg;
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int pmreg, rev;
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psc->sc_pc = pa->pa_pc;
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psc->sc_pcitag = pa->pa_tag;
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app = atw_pci_lookup(pa);
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if (app == NULL) {
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printf("\n");
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panic("atw_pci_attach: impossible");
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}
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/*
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* No power management hooks.
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* XXX Maybe we should add some!
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*/
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sc->sc_flags |= ATWF_ENABLED;
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/*
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* Get revision info, and set some chip-specific variables.
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*/
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rev = PCI_REVISION(pa->pa_class);
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printf(": %s, pass %d.%d\n", app->app_product_name,
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(rev >> 4) & 0xf, rev & 0xf);
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/*
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* Check to see if the device is in power-save mode, and
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* being it out if necessary.
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*
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* XXX This code comes almost verbatim from if_tlp_pci.c. I do
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* not understand it. Tulip clears the "sleep mode" bit in the
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* CFDA register, first. There is an equivalent (?) register at the
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* same place in the ADM8211, but the docs do not assign its bits
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* any meanings. -dcy
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*/
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if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PWRMGMT, &pmreg, 0)) {
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reg = pci_conf_read(pc, pa->pa_tag, pmreg + PCI_PMCSR);
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switch (reg & PCI_PMCSR_STATE_MASK) {
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case PCI_PMCSR_STATE_D1:
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case PCI_PMCSR_STATE_D2:
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printf(": waking up from power state D%d\n%s",
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reg & PCI_PMCSR_STATE_MASK, sc->sc_dev.dv_xname);
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pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
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(reg & ~PCI_PMCSR_STATE_MASK) |
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PCI_PMCSR_STATE_D0);
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break;
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case PCI_PMCSR_STATE_D3:
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/*
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* The card has lost all configuration data in
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* this state, so punt.
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*/
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printf(": unable to wake up from power state D3, "
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"reboot required.\n");
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pci_conf_write(pc, pa->pa_tag, pmreg + PCI_PMCSR,
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(reg & ~PCI_PMCSR_STATE_MASK) |
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PCI_PMCSR_STATE_D0);
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return;
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}
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}
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/*
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* Map the device.
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*/
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ioh_valid = (pci_mapreg_map(pa, ATW_PCI_IOBA,
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PCI_MAPREG_TYPE_IO, 0,
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&iot, &ioh, NULL, NULL) == 0);
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memh_valid = (pci_mapreg_map(pa, ATW_PCI_MMBA,
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PCI_MAPREG_TYPE_MEM|PCI_MAPREG_MEM_TYPE_32BIT, 0,
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&memt, &memh, NULL, NULL) == 0);
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if (memh_valid) {
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sc->sc_st = memt;
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sc->sc_sh = memh;
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} else if (ioh_valid) {
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sc->sc_st = iot;
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sc->sc_sh = ioh;
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} else {
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printf(": unable to map device registers\n");
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return;
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}
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sc->sc_dmat = pa->pa_dmat;
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/*
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* Make sure bus mastering is enabled.
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*/
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pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) |
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PCI_COMMAND_MASTER_ENABLE);
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/*
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* Get the cacheline size.
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*/
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sc->sc_cacheline = PCI_CACHELINE(pci_conf_read(pc, pa->pa_tag,
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PCI_BHLC_REG));
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/*
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* Get PCI data moving command info.
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*/
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if (pa->pa_flags & PCI_FLAGS_MRL_OKAY) /* read line */
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sc->sc_flags |= ATWF_MRL;
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if (pa->pa_flags & PCI_FLAGS_MRM_OKAY) /* read multiple */
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sc->sc_flags |= ATWF_MRM;
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if (pa->pa_flags & PCI_FLAGS_MWI_OKAY) /* write invalidate */
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sc->sc_flags |= ATWF_MWI;
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/*
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* Map and establish our interrupt.
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*/
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if (pci_intr_map(pa, &ih)) {
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printf("%s: unable to map interrupt\n",
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sc->sc_dev.dv_xname);
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return;
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}
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intrstr = pci_intr_string(pc, ih);
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psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, atw_intr, sc);
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if (psc->sc_ih == NULL) {
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printf("%s: unable to establish interrupt",
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sc->sc_dev.dv_xname);
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if (intrstr != NULL)
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printf(" at %s", intrstr);
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printf("\n");
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return;
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}
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printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
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/*
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* Finish off the attach.
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*/
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atw_attach(sc);
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}
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