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120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/* $NetBSD: zynq7000_sdhc.c,v 1.1 2015/01/23 12:34:09 hkenken Exp $ */
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/*-
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* Copyright (c) 2015 Genetec Corporation. All rights reserved.
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* Written by Hashimoto Kenichi for Genetec Corporation.
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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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*
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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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: zynq7000_sdhc.c,v 1.1 2015/01/23 12:34:09 hkenken Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/pmf.h>
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#include <machine/intr.h>
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#include <dev/sdmmc/sdhcvar.h>
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#include <dev/sdmmc/sdmmcvar.h>
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#include <arm/zynq/zynq7000_reg.h>
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#include <arm/zynq/zynq7000_var.h>
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struct sdhc_axi_softc {
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struct sdhc_softc sc_sdhc;
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/* we have only one slot */
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struct sdhc_host *sc_hosts[1];
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void *sc_ih;
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};
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static int sdhc_match(device_t, cfdata_t, void *);
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static void sdhc_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(sdhc_axi, sizeof(struct sdhc_axi_softc),
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sdhc_match, sdhc_attach, NULL, NULL);
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static int
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sdhc_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct axi_attach_args *aa = aux;
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switch (aa->aa_addr) {
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case SDIO0_BASE:
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case SDIO1_BASE:
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return 1;
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}
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return 0;
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}
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static void
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sdhc_attach(device_t parent, device_t self, void *aux)
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{
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struct sdhc_axi_softc *sc = device_private(self);
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struct axi_attach_args *aa = aux;
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bus_space_tag_t iot = aa->aa_iot;
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bus_space_handle_t ioh;
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u_int perclk;
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sc->sc_sdhc.sc_dev = self;
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sc->sc_sdhc.sc_dmat = aa->aa_dmat;
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if (bus_space_map(iot, aa->aa_addr, SDIO_SIZE, 0, &ioh)) {
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aprint_error_dev(self, "can't map\n");
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return;
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}
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aprint_normal(": SD/MMC host controller\n");
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aprint_naive("\n");
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sc->sc_sdhc.sc_host = sc->sc_hosts;
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/* base clock frequency in kHz */
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perclk = ZYNQ7000_PS_CLK;
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sc->sc_sdhc.sc_clkbase = perclk / 1000;
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sc->sc_sdhc.sc_flags |= SDHC_FLAG_32BIT_ACCESS;
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sc->sc_ih = intr_establish(aa->aa_irq, IPL_SDMMC, IST_LEVEL,
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sdhc_intr, &sc->sc_sdhc);
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if (sc->sc_ih == NULL) {
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aprint_error_dev(self, "can't establish interrupt\n");
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return;
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}
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if (sdhc_host_found(&sc->sc_sdhc, iot, ioh, SDIO_SIZE)) {
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aprint_error_dev(self, "can't initialize host\n");
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return;
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}
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if (!pmf_device_register1(self, sdhc_suspend, sdhc_resume,
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sdhc_shutdown)) {
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aprint_error_dev(self,
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"can't establish power hook\n");
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}
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}
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