bcm53xx_sdhc.c revision 1.1 
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 1.1 2012/09/01 00:04:44 matt Exp $");
35
36#include <sys/bus.h>
37#include <sys/device.h>
38#include <sys/intr.h>
39#include <sys/systm.h>
40
41#include <arm/broadcom/bcm53xx_reg.h>
42#include <arm/broadcom/bcm53xx_var.h>
43
44#include <dev/sdmmc/sdhcreg.h>
45#include <dev/sdmmc/sdhcvar.h>
46
47static int sdhc_ccb_match(device_t, cfdata_t, void *);
48static void sdhc_ccb_attach(device_t, device_t, void *);
49
50struct sdhc_ccb_softc {
51	struct sdhc_softc ccbsc_sc;
52	bus_space_tag_t ccbsc_bst;
53	bus_space_handle_t ccbsc_bsh;
54	struct sdhc_host *ccbsc_hosts[1];
55	void *ccbsc_ih;
56};
57
58CFATTACH_DECL_NEW(sdhc_ccb, sizeof(struct sdhc_ccb_softc),
59	sdhc_ccb_match, sdhc_ccb_attach, NULL, NULL);
60
61static int
62sdhc_ccb_match(device_t parent, cfdata_t cf, void *aux)
63{
64	struct bcmccb_attach_args * const ccbaa = aux;
65	const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
66
67	if (strcmp(cf->cf_name, loc->loc_name))
68		return 0;
69
70	KASSERT(cf->cf_loc[BCMCCBCF_PORT] == BCMCCBCF_PORT_DEFAULT);
71
72	return 1;
73}
74
75static void
76sdhc_ccb_attach(device_t parent, device_t self, void *aux)
77{
78	struct sdhc_ccb_softc * const ccbsc = device_private(self);
79	struct sdhc_softc * const sc = &ccbsc->ccbsc_sc;
80	struct bcmccb_attach_args * const ccbaa = aux;
81	const struct bcm_locators * const loc = &ccbaa->ccbaa_loc;
82
83	ccbsc->ccbsc_bst = ccbaa->ccbaa_ccb_bst;
84	bus_space_subregion(ccbsc->ccbsc_bst, ccbaa->ccbaa_ccb_bsh,
85	    loc->loc_offset, loc->loc_size, &ccbsc->ccbsc_bsh);
86
87	sc->sc_dev = self;
88	sc->sc_dmat = ccbaa->ccbaa_dmat;
89	sc->sc_host = ccbsc->ccbsc_hosts;
90	sc->sc_flags |= SDHC_FLAG_32BIT_ACCESS;
91	sc->sc_flags |= SDHC_FLAG_HAVE_CGM;
92	//sc->sc_flags |= SDHC_FLAG_USE_DMA;
93
94	aprint_naive(": SDHC controller\n");
95	aprint_normal(": SDHC controller%s\n",
96	   (sc->sc_flags & SDHC_FLAG_USE_DMA) ? " (DMA enabled)" : "");
97
98#if 1
99	int error = sdhc_host_found(sc, ccbsc->ccbsc_bst, ccbsc->ccbsc_bsh,
100	    loc->loc_size);
101	if (error != 0) {
102		aprint_error_dev(self, "couldn't initialize host, error=%d\n",
103		    error);
104		goto fail;
105	}
106#endif
107
108	ccbsc->ccbsc_ih = intr_establish(loc->loc_intrs[0], IPL_VM, IST_LEVEL,
109	    sdhc_intr, sc);
110	if (ccbsc->ccbsc_ih == NULL) {
111		aprint_error_dev(self, "failed to establish interrupt %d\n",
112		     loc->loc_intrs[0]);
113		goto fail;
114	}
115	aprint_normal_dev(self, "interrupting on irq %d\n",
116	     loc->loc_intrs[0]);
117
118	return;
119
120fail:
121	if (ccbsc->ccbsc_ih) {
122		intr_disestablish(ccbsc->ccbsc_ih);
123		ccbsc->ccbsc_ih = NULL;
124	}
125}
126