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      1 /*-
      2  * Copyright (c) 2012 The NetBSD Foundation, Inc.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to The NetBSD Foundation
      6  * by Matt Thomas of 3am Software Foundry.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     20  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     27  * POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include "locators.h"
     31 
     32 #include <sys/cdefs.h>
     33 
     34 __KERNEL_RCSID(1, "$NetBSD: bcm53xx_sdhc.c,v 1.2 2014/02/19 22:21:16 matt Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/bus.h>
     38 #include <sys/device.h>
     39 #include <sys/intr.h>
     40 #include <sys/systm.h>
     41 
     42 #include <arm/broadcom/bcm53xx_reg.h>
     43 #include <arm/broadcom/bcm53xx_var.h>
     44 
     45 #include <dev/sdmmc/sdhcreg.h>
     46 #include <dev/sdmmc/sdhcvar.h>
     47 
     48 static int sdhc_ccb_match(device_t, cfdata_t, void *);
     49 static void sdhc_ccb_attach(device_t, device_t, void *);
     50 
     51 struct sdhc_ccb_softc {
     52 	struct sdhc_softc ccbsc_sc;
     53 	bus_space_tag_t ccbsc_bst;
     54 	bus_space_handle_t ccbsc_bsh;
     55 	struct sdhc_host *ccbsc_hosts[1];
     56 	void *ccbsc_ih;
     57 };
     58 
     59 CFATTACH_DECL_NEW(sdhc_ccb, sizeof(struct sdhc_ccb_softc),
     60 	sdhc_ccb_match, sdhc_ccb_attach, NULL, NULL);
     61 
     62 static int
     63 sdhc_ccb_match(device_t parent, cfdata_t cf, void *aux)
     64 {
     65 	struct bcmccb_attach_args * const ccbaa = aux;
     66 	const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
     67 
     68 	if (strcmp(cf->cf_name, loc->loc_name))
     69 		return 0;
     70 
     71 	KASSERT(cf->cf_loc[BCMCCBCF_PORT] == BCMCCBCF_PORT_DEFAULT);
     72 
     73 	return 1;
     74 }
     75 
     76 static void
     77 sdhc_ccb_attach(device_t parent, device_t self, void *aux)
     78 {
     79 	struct sdhc_ccb_softc * const ccbsc = device_private(self);
     80 	struct sdhc_softc * const sc = &ccbsc->ccbsc_sc;
     81 	struct bcmccb_attach_args * const ccbaa = aux;
     82 	const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
     83 
     84 	ccbsc->ccbsc_bst = ccbaa->ccbaa_ccb_bst;
     85 	bus_space_subregion(ccbsc->ccbsc_bst, ccbaa->ccbaa_ccb_bsh,
     86 	    loc->loc_offset, loc->loc_size, &ccbsc->ccbsc_bsh);
     87 
     88 	sc->sc_dev = self;
     89 	sc->sc_dmat = ccbaa->ccbaa_dmat;
     90 	sc->sc_host = ccbsc->ccbsc_hosts;
     91 	sc->sc_flags |= SDHC_FLAG_32BIT_ACCESS;
     92 	sc->sc_flags |= SDHC_FLAG_HAVE_CGM;
     93 	//sc->sc_flags |= SDHC_FLAG_USE_DMA;
     94 
     95 	aprint_naive(": SDHC controller\n");
     96 	aprint_normal(": SDHC controller%s\n",
     97 	   (sc->sc_flags & SDHC_FLAG_USE_DMA) ? " (DMA enabled)" : "");
     98 
     99 #if 1
    100 	int error = sdhc_host_found(sc, ccbsc->ccbsc_bst, ccbsc->ccbsc_bsh,
    101 	    loc->loc_size);
    102 	if (error != 0) {
    103 		aprint_error_dev(self, "couldn't initialize host, error=%d\n",
    104 		    error);
    105 		goto fail;
    106 	}
    107 #endif
    108 
    109 	ccbsc->ccbsc_ih = intr_establish(loc->loc_intrs[0], IPL_VM, IST_LEVEL,
    110 	    sdhc_intr, sc);
    111 	if (ccbsc->ccbsc_ih == NULL) {
    112 		aprint_error_dev(self, "failed to establish interrupt %d\n",
    113 		     loc->loc_intrs[0]);
    114 		goto fail;
    115 	}
    116 	aprint_normal_dev(self, "interrupting on irq %d\n",
    117 	     loc->loc_intrs[0]);
    118 
    119 	return;
    120 
    121 fail:
    122 	if (ccbsc->ccbsc_ih) {
    123 		intr_disestablish(ccbsc->ccbsc_ih);
    124 		ccbsc->ccbsc_ih = NULL;
    125 	}
    126 }
    127