471 lines
12 KiB
C
471 lines
12 KiB
C
/* $NetBSD: if_ex_cardbus.c,v 1.23 2001/11/13 12:51:13 lukem Exp $ */
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/*
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* CardBus specific routines for 3Com 3C575-family CardBus ethernet adapter
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*
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* Copyright (c) 1998 and 1999
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* HAYAKAWA Koichi. All rights reserved.
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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 author.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY HAYAKAWA KOICHI ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL TAKESHI OHASHI OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_ex_cardbus.c,v 1.23 2001/11/13 12:51:13 lukem Exp $");
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/* #define EX_DEBUG 4 */ /* define to report information for debugging */
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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/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/syslog.h>
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#include <sys/select.h>
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#include <sys/device.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_ether.h>
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#include <net/if_media.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <dev/cardbus/cardbusvar.h>
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#include <dev/cardbus/cardbusdevs.h>
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#include <dev/mii/miivar.h>
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#include <dev/ic/elink3var.h>
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#include <dev/ic/elink3reg.h>
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#include <dev/ic/elinkxlreg.h>
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#include <dev/ic/elinkxlvar.h>
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#if defined DEBUG && !defined EX_DEBUG
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#define EX_DEBUG
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#endif
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#if defined EX_DEBUG
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#define DPRINTF(a) printf a
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#else
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#define DPRINTF(a)
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#endif
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#define CARDBUS_3C575BTX_FUNCSTAT_PCIREG CARDBUS_BASE2_REG /* means 0x18 */
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#define EX_CB_INTR 4 /* intr acknowledge reg. CardBus only */
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#define EX_CB_INTR_ACK 0x8000 /* intr acknowledge bit */
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int ex_cardbus_match __P((struct device *, struct cfdata *, void *));
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void ex_cardbus_attach __P((struct device *, struct device *,void *));
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int ex_cardbus_detach __P((struct device *, int));
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void ex_cardbus_intr_ack __P((struct ex_softc *));
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int ex_cardbus_enable __P((struct ex_softc *));
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void ex_cardbus_disable __P((struct ex_softc *));
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void ex_cardbus_power __P((struct ex_softc *, int));
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struct ex_cardbus_softc {
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struct ex_softc sc_softc;
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cardbus_devfunc_t sc_ct;
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int sc_intrline;
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u_int8_t sc_cardbus_flags;
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#define EX_REATTACH 0x01
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#define EX_ABSENT 0x02
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u_int8_t sc_cardtype;
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#define EX_CB_BOOMERANG 1
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#define EX_CB_CYCLONE 2
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/* CardBus function status space. 575B requests it. */
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bus_space_tag_t sc_funct;
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bus_space_handle_t sc_funch;
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bus_size_t sc_funcsize;
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bus_size_t sc_mapsize; /* the size of mapped bus space region */
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cardbustag_t sc_tag;
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int sc_csr; /* CSR bits */
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int sc_bar_reg; /* which BAR to use */
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pcireg_t sc_bar_val; /* value of the BAR */
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int sc_bar_reg1; /* which BAR to use */
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pcireg_t sc_bar_val1; /* value of the BAR */
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};
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struct cfattach ex_cardbus_ca = {
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sizeof(struct ex_cardbus_softc), ex_cardbus_match,
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ex_cardbus_attach, ex_cardbus_detach, ex_activate
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};
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const struct ex_cardbus_product {
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u_int32_t ecp_prodid; /* CardBus product ID */
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int ecp_flags; /* initial softc flags */
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pcireg_t ecp_csr; /* PCI CSR flags */
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int ecp_cardtype; /* card type */
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const char *ecp_name; /* device name */
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} ex_cardbus_products[] = {
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{ CARDBUS_PRODUCT_3COM_3C575TX,
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EX_CONF_MII | EX_CONF_EEPROM_OFF | EX_CONF_EEPROM_8BIT,
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CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MASTER_ENABLE,
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EX_CB_BOOMERANG,
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"3c575-TX Ethernet" },
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{ CARDBUS_PRODUCT_3COM_3C575BTX,
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EX_CONF_90XB|EX_CONF_MII|EX_CONF_INV_LED_POLARITY |
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EX_CONF_EEPROM_OFF | EX_CONF_EEPROM_8BIT,
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CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE |
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CARDBUS_COMMAND_MASTER_ENABLE,
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EX_CB_CYCLONE,
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"3c575B-TX Ethernet" },
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{ CARDBUS_PRODUCT_3COM_3C575CTX,
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EX_CONF_90XB | EX_CONF_PHY_POWER | EX_CONF_EEPROM_OFF |
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EX_CONF_EEPROM_8BIT,
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CARDBUS_COMMAND_IO_ENABLE | CARDBUS_COMMAND_MEM_ENABLE |
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CARDBUS_COMMAND_MASTER_ENABLE,
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EX_CB_CYCLONE,
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"3c575CT Ethernet" },
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{ 0,
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0,
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0,
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0,
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NULL },
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};
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void ex_cardbus_setup __P((struct ex_cardbus_softc *));
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const struct ex_cardbus_product *ex_cardbus_lookup
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__P((const struct cardbus_attach_args *));
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const struct ex_cardbus_product *
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ex_cardbus_lookup(ca)
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const struct cardbus_attach_args *ca;
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{
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const struct ex_cardbus_product *ecp;
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if (CARDBUS_VENDOR(ca->ca_id) != CARDBUS_VENDOR_3COM)
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return (NULL);
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for (ecp = ex_cardbus_products; ecp->ecp_name != NULL; ecp++)
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if (CARDBUS_PRODUCT(ca->ca_id) == ecp->ecp_prodid)
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return (ecp);
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return (NULL);
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}
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int
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ex_cardbus_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct cardbus_attach_args *ca = aux;
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if (ex_cardbus_lookup(ca) != NULL)
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return (1);
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return (0);
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}
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void
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ex_cardbus_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct ex_cardbus_softc *csc = (void *)self;
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struct ex_softc *sc = &csc->sc_softc;
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struct cardbus_attach_args *ca = aux;
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cardbus_devfunc_t ct = ca->ca_ct;
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#if rbus
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#else
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cardbus_chipset_tag_t cc = ct->ct_cc;
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#endif
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const struct ex_cardbus_product *ecp;
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bus_addr_t adr, adr1;
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sc->ex_bustype = EX_BUS_CARDBUS;
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sc->sc_dmat = ca->ca_dmat;
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csc->sc_ct = ca->ca_ct;
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csc->sc_intrline = ca->ca_intrline;
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csc->sc_tag = ca->ca_tag;
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ecp = ex_cardbus_lookup(ca);
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if (ecp == NULL) {
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printf("\n");
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panic("ex_cardbus_attach: impossible");
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}
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printf(": 3Com %s\n", ecp->ecp_name);
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sc->ex_conf = ecp->ecp_flags;
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csc->sc_cardtype = ecp->ecp_cardtype;
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csc->sc_csr = ecp->ecp_csr;
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if (Cardbus_mapreg_map(ct, CARDBUS_BASE0_REG, CARDBUS_MAPREG_TYPE_IO, 0,
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&sc->sc_iot, &sc->sc_ioh, &adr, &csc->sc_mapsize) == 0) {
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#if rbus
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#else
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(*ct->ct_cf->cardbus_io_open)(cc, 0, adr, adr + csc->sc_mapsize);
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#endif
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csc->sc_bar_reg = CARDBUS_BASE0_REG;
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csc->sc_bar_val = adr | CARDBUS_MAPREG_TYPE_IO;
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if (csc->sc_cardtype == EX_CB_CYCLONE) {
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/* Map CardBus function status window. */
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if (Cardbus_mapreg_map(ct,
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CARDBUS_3C575BTX_FUNCSTAT_PCIREG,
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CARDBUS_MAPREG_TYPE_MEM, 0,
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&csc->sc_funct, &csc->sc_funch,
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&adr1, &csc->sc_funcsize) == 0) {
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csc->sc_bar_reg1 =
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CARDBUS_3C575BTX_FUNCSTAT_PCIREG;
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csc->sc_bar_val1 =
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adr1 | CARDBUS_MAPREG_TYPE_MEM;
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} else {
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printf("%s: unable to map function "
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"status window\n", self->dv_xname);
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return;
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}
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/* Setup interrupt acknowledge hook */
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sc->intr_ack = ex_cardbus_intr_ack;
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}
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}
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else {
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printf(": can't map i/o space\n");
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return;
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}
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/* Power management hooks. */
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sc->enable = ex_cardbus_enable;
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sc->disable = ex_cardbus_disable;
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sc->power = ex_cardbus_power;
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/*
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* Handle power management nonsense and
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* initialize the configuration registers.
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*/
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ex_cardbus_setup(csc);
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ex_config(sc);
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if (csc->sc_cardtype == EX_CB_CYCLONE)
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bus_space_write_4(csc->sc_funct, csc->sc_funch,
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EX_CB_INTR, EX_CB_INTR_ACK);
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Cardbus_function_disable(csc->sc_ct);
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}
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void
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ex_cardbus_intr_ack(sc)
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struct ex_softc *sc;
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{
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struct ex_cardbus_softc *csc = (struct ex_cardbus_softc *)sc;
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bus_space_write_4(csc->sc_funct, csc->sc_funch, EX_CB_INTR,
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EX_CB_INTR_ACK);
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}
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int
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ex_cardbus_detach(self, arg)
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struct device *self;
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int arg;
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{
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struct ex_cardbus_softc *csc = (void *)self;
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struct ex_softc *sc = &csc->sc_softc;
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struct cardbus_devfunc *ct = csc->sc_ct;
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int rv;
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#if defined(DIAGNOSTIC)
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if (ct == NULL) {
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panic("%s: data structure lacks\n", sc->sc_dev.dv_xname);
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}
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#endif
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rv = ex_detach(sc);
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if (rv == 0) {
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/*
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* Unhook the interrupt handler.
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*/
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cardbus_intr_disestablish(ct->ct_cc, ct->ct_cf, sc->sc_ih);
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if (csc->sc_cardtype == EX_CB_CYCLONE) {
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Cardbus_mapreg_unmap(ct,
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CARDBUS_3C575BTX_FUNCSTAT_PCIREG,
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csc->sc_funct, csc->sc_funch, csc->sc_funcsize);
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}
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Cardbus_mapreg_unmap(ct, CARDBUS_BASE0_REG, sc->sc_iot,
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sc->sc_ioh, csc->sc_mapsize);
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}
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return (rv);
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}
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int
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ex_cardbus_enable(sc)
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struct ex_softc *sc;
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{
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struct ex_cardbus_softc *csc = (struct ex_cardbus_softc *)sc;
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cardbus_function_tag_t cf = csc->sc_ct->ct_cf;
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cardbus_chipset_tag_t cc = csc->sc_ct->ct_cc;
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Cardbus_function_enable(csc->sc_ct);
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ex_cardbus_setup(csc);
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sc->sc_ih = cardbus_intr_establish(cc, cf, csc->sc_intrline,
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IPL_NET, ex_intr, sc);
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if (NULL == sc->sc_ih) {
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printf("%s: couldn't establish interrupt\n",
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sc->sc_dev.dv_xname);
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return (1);
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}
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printf("%s: interrupting at %d\n", sc->sc_dev.dv_xname,
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csc->sc_intrline);
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return (0);
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}
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void
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ex_cardbus_disable(sc)
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struct ex_softc *sc;
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{
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struct ex_cardbus_softc *csc = (struct ex_cardbus_softc *)sc;
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cardbus_function_tag_t cf = csc->sc_ct->ct_cf;
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cardbus_chipset_tag_t cc = csc->sc_ct->ct_cc;
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cardbus_intr_disestablish(cc, cf, sc->sc_ih);
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sc->sc_ih = NULL;
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Cardbus_function_disable(csc->sc_ct);
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}
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void
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ex_cardbus_power(sc, why)
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struct ex_softc *sc;
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int why;
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{
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struct ex_cardbus_softc *csc = (void *) sc;
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if (why == PWR_RESUME) {
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/*
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* Give the PCI configuration registers a kick
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* in the head.
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*/
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#ifdef DIAGNOSTIC
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if (sc->enabled == 0)
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panic("ex_cardbus_power");
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#endif
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ex_cardbus_setup(csc);
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}
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}
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void
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ex_cardbus_setup(csc)
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struct ex_cardbus_softc *csc;
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{
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struct ex_softc *sc = &csc->sc_softc;
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cardbus_devfunc_t ct = csc->sc_ct;
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cardbus_chipset_tag_t cc = ct->ct_cc;
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cardbus_function_tag_t cf = ct->ct_cf;
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cardbusreg_t reg;
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int pmreg;
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/* Get it out of power save mode if needed (BIOS bugs). */
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if (cardbus_get_capability(cc, cf, csc->sc_tag,
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PCI_CAP_PWRMGMT, &pmreg, 0)) {
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reg = cardbus_conf_read(cc, cf, csc->sc_tag, pmreg + 4) & 0x03;
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#if 1 /* XXX Probably not right for CardBus. */
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if (reg == 3) {
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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("%s: unable to wake up from power state D3\n",
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sc->sc_dev.dv_xname);
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return;
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}
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#endif
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if (reg != 0) {
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printf("%s: waking up from power state D%d\n",
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sc->sc_dev.dv_xname, reg);
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cardbus_conf_write(cc, cf, csc->sc_tag,
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pmreg + 4, 0);
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}
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}
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/* Make sure the right access type is on the CardBus bridge. */
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(ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_IO_ENABLE);
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if (csc->sc_cardtype == EX_CB_CYCLONE) {
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/*
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* Make sure CardBus brigde can access memory space. Usually
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* memory access is enabled by BIOS, but some BIOSes do not
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* enable it.
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*/
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(ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_MEM_ENABLE);
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/* Program the BAR */
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cardbus_conf_write(cc, cf, csc->sc_tag,
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csc->sc_bar_reg1, csc->sc_bar_val1);
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}
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(ct->ct_cf->cardbus_ctrl)(cc, CARDBUS_BM_ENABLE);
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/* Program the BAR */
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cardbus_conf_write(cc, cf, csc->sc_tag,
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csc->sc_bar_reg, csc->sc_bar_val);
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/* Enable the appropriate bits in the CARDBUS CSR. */
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reg = cardbus_conf_read(cc, cf, csc->sc_tag,
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CARDBUS_COMMAND_STATUS_REG);
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reg |= csc->sc_csr;
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cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_COMMAND_STATUS_REG,
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reg);
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/*
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* set latency timmer
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*/
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reg = cardbus_conf_read(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG);
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if (CARDBUS_LATTIMER(reg) < 0x20) {
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/* at least the value of latency timer should 0x20. */
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DPRINTF(("if_ex_cardbus: lattimer 0x%x -> 0x20\n",
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CARDBUS_LATTIMER(reg)));
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reg &= ~(CARDBUS_LATTIMER_MASK << CARDBUS_LATTIMER_SHIFT);
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reg |= (0x20 << CARDBUS_LATTIMER_SHIFT);
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cardbus_conf_write(cc, cf, csc->sc_tag, CARDBUS_BHLC_REG, reg);
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}
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}
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