1/* $NetBSD: sdhc_hollywood.c,v 1.2 2024/01/23 21:56:07 jmcneill Exp $ */
2
3/*-
4 * Copyright (c) 2024 Jared McNeill <jmcneill@invisible.ca>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: sdhc_hollywood.c,v 1.2 2024/01/23 21:56:07 jmcneill Exp $");
31
32#include <sys/param.h>
33#include <sys/bus.h>
34#include <sys/device.h>
35#include <sys/systm.h>
36
37#include <dev/sdmmc/sdhcreg.h>
38#include <dev/sdmmc/sdhcvar.h>
39#include <dev/sdmmc/sdmmcvar.h>
40
41#include <machine/wii.h>
42#include "hollywood.h"
43
44#define SDHC_SIZE			0x200
45#define SDHC_HOLLYWOOD_WRITE_DELAY	5
46
47extern struct powerpc_bus_dma_tag wii_mem2_bus_dma_tag;
48
49static int	sdhc_hollywood_match(device_t, cfdata_t, void *);
50static void	sdhc_hollywood_attach(device_t, device_t, void *);
51
52struct sdhc_hollywood_softc {
53	struct sdhc_softc	sc_base;
54	struct sdhc_host	*sc_host[1];
55};
56
57CFATTACH_DECL_NEW(sdhc_hollywood, sizeof(struct sdhc_hollywood_softc),
58	sdhc_hollywood_match, sdhc_hollywood_attach, NULL, NULL);
59
60static int
61sdhc_hollywood_match(device_t parent, cfdata_t cf, void *aux)
62{
63	return 1;
64}
65
66static void
67sdhc_hollywood_attach(device_t parent, device_t self, void *aux)
68{
69	struct hollywood_attach_args *haa = aux;
70	struct sdhc_hollywood_softc *sc = device_private(self);
71	bus_space_tag_t bst;
72	bus_space_handle_t bsh;
73	int error;
74
75	sc->sc_base.sc_dev = self;
76	sc->sc_base.sc_host = sc->sc_host;
77	sc->sc_base.sc_dmat = &wii_mem2_bus_dma_tag;
78	sc->sc_base.sc_flags = SDHC_FLAG_SINGLE_POWER_WRITE |
79			       SDHC_FLAG_32BIT_ACCESS |
80			       SDHC_FLAG_USE_DMA;
81	sc->sc_base.sc_write_delay = SDHC_HOLLYWOOD_WRITE_DELAY;
82
83	bst = haa->haa_bst;
84	if (bus_space_map(bst, haa->haa_addr, SDHC_SIZE, 0, &bsh)) {
85		aprint_error(": couldn't map registers\n");
86		return;
87	}
88
89	aprint_naive("\n");
90	aprint_normal(": SDHC\n");
91
92	hollywood_intr_establish(haa->haa_irq, IPL_SDMMC, sdhc_intr,
93	    &sc->sc_base, device_xname(self));
94
95	error = sdhc_host_found(&sc->sc_base, bst, bsh, SDHC_SIZE);
96	if (error != 0) {
97		aprint_error_dev(self,
98		    "couldn't initialize host, error = %d\n", error);
99	}
100}
101