178 lines
5.2 KiB
C
178 lines
5.2 KiB
C
/* adapted from: */
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/* NetBSD: if_sm_emifs.c,v 1.1.6.1 2007/02/24 19:03:14 snj Exp */
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/*
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* OSK5912 SMC91Cxx wrapper, based on sys/arch/evbarm/viper/if_sm_pxaip.c
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*
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* Copyright (c) 2005 Antti Kantee. 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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. The name of the company nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 OR
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* 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: if_sm_gpmc.c,v 1.5 2012/10/27 17:17:49 chs Exp $");
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#include "locators.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <net/if.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/intr.h>
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#include <sys/bus.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/ic/smc91cxxreg.h>
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#include <dev/ic/smc91cxxvar.h>
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#include <arch/arm/omap/omap2_gpmcvar.h>
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#include <arch/arm/omap/omap_gpio.h>
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static int sm_gpmc_match(device_t, cfdata_t, void *);
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static void sm_gpmc_attach(device_t, device_t, void *);
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struct sm_gpmc_softc {
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struct smc91cxx_softc sc_sm;
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struct evcnt sc_incomplete_ev;
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struct evcnt sc_spurious_ev;
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void *ih;
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};
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CFATTACH_DECL_NEW(sm_gpmc, sizeof(struct sm_gpmc_softc), sm_gpmc_match,
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sm_gpmc_attach, NULL, NULL);
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static int
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sm_gpmc_match(device_t parent, cfdata_t match, void *aux)
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{
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struct gpmc_attach_args *gpmc = aux;
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if (gpmc->gpmc_addr == GPMCCF_ADDR_DEFAULT)
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panic("sm must have addr specified in config.");
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if (gpmc->gpmc_intr == GPMCCF_INTR_DEFAULT)
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panic("sm must have intr specified in config.");
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/* Trust the config file. */
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return (1);
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}
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static int
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sm_gpmc_intr(void *arg)
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{
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struct sm_gpmc_softc * const gpmcsc = (struct sm_gpmc_softc *)arg;
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struct smc91cxx_softc * const sc = &gpmcsc->sc_sm;
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if (bus_space_read_2(sc->sc_bst, sc->sc_bsh, 0x1a)) {
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int rv = smc91cxx_intr(sc);
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if (bus_space_read_2(sc->sc_bst, sc->sc_bsh, 0x1a))
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gpmcsc->sc_incomplete_ev.ev_count++;
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return rv;
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} else {
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gpmcsc->sc_spurious_ev.ev_count++;
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return 0;
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}
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}
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static void
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sm_gpmc_attach(device_t parent, device_t self, void *aux)
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{
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struct sm_gpmc_softc *gpmcsc = device_private(self);
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struct smc91cxx_softc *sc = &gpmcsc->sc_sm;
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struct gpmc_attach_args *gpmc = aux;
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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uint8_t enaddr[ETHER_ADDR_LEN];
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unsigned int count = 0;
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bst = gpmc->gpmc_iot;
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/* map i/o space */
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if (bus_space_map(bst, gpmc->gpmc_addr, SMC_IOSIZE + 16, 0, &bsh) != 0) {
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aprint_error(": sm_gpmc_attach: can't map i/o space");
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return;
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}
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aprint_normal("\n");
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/* fill in master sc */
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sc->sc_dev = self;
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sc->sc_bst = bst;
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sc->sc_bsh = bsh;
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/* register the interrupt handler */
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gpmcsc->ih = intr_establish(gpmc->gpmc_intr, IPL_NET, IST_LEVEL,
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sm_gpmc_intr, gpmcsc);
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if (gpmcsc->ih == NULL) {
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aprint_error(": couldn't establish interrupt\n");
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bus_space_unmap(bst, bsh, SMC_IOSIZE + 16);
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return;
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}
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evcnt_attach_dynamic(&gpmcsc->sc_spurious_ev, EVCNT_TYPE_INTR, NULL,
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device_xname(self), "spurious intr");
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evcnt_attach_dynamic(&gpmcsc->sc_incomplete_ev, EVCNT_TYPE_INTR, NULL,
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device_xname(self), "incomplete intr");
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SMC_SELECT_BANK(sc, 1);
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for (count = 0; count < ETHER_ADDR_LEN; count += 2) {
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uint16_t tmp;
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tmp = bus_space_read_2(bst, bsh, IAR_ADDR0_REG_W + count);
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enaddr[count + 1] = (tmp >> 8) & 0xff;
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enaddr[count] = tmp & 0xff;
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}
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/*
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* Reset the SMC
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*/
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bus_space_write_2(bst, bsh, 0x1c, 1);
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delay(2);
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bus_space_write_2(bst, bsh, 0x1c, 6);
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/*
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* Wait for the reset to complete.
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*/
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while (bus_space_read_2(bst, bsh, 0x1a) & 1) {
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if (++count > 1000) {
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aprint_error(": didn't come out of reset\n");
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return;
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}
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}
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/* Perform generic attach. */
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sc->sc_flags |= SMC_FLAGS_ENABLED;
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smc91cxx_attach(sc, enaddr);
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}
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