1/* $NetBSD: ohci_ahb.c,v 1.1 2026/01/09 22:54:30 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: ohci_ahb.c,v 1.1 2026/01/09 22:54:30 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/usb/usb.h>
38#include <dev/usb/usbdi.h>
39#include <dev/usb/usbdivar.h>
40#include <dev/usb/usb_mem.h>
41#include <dev/usb/ohcireg.h>
42#include <dev/usb/ohcivar.h>
43
44#include <machine/wii.h>
45#include <machine/wiiu.h>
46#include <machine/pio.h>
47#include "ahb.h"
48
49#define	USB_CHICKENBITS		0x0d0400cc
50#define	 OHCI_INTR_ENABLE	0x000e1800
51
52extern struct powerpc_bus_dma_tag wii_mem2_bus_dma_tag;
53
54static int	ohci_ahb_match(device_t, cfdata_t, void *);
55static void	ohci_ahb_attach(device_t, device_t, void *);
56
57CFATTACH_DECL_NEW(ohci_ahb, sizeof(struct ohci_softc),
58	ohci_ahb_match, ohci_ahb_attach, NULL, NULL);
59
60static int
61ohci_ahb_match(device_t parent, cfdata_t cf, void *aux)
62{
63	struct ahb_attach_args *aaa = aux;
64
65	return wiiu_native || aaa->aaa_irq < 32;
66}
67
68static void
69ohci_ahb_attach(device_t parent, device_t self, void *aux)
70{
71	struct ahb_attach_args *aaa = aux;
72	struct ohci_softc *sc = device_private(self);
73	int error;
74
75	sc->sc_dev = self;
76	sc->sc_bus.ub_hcpriv = sc;
77	sc->sc_bus.ub_dmatag = &wii_mem2_bus_dma_tag;
78	sc->sc_flags = 0;
79	sc->sc_size = 0x200;
80	sc->iot = aaa->aaa_bst;
81	error = bus_space_map(sc->iot, aaa->aaa_addr, sc->sc_size, 0, &sc->ioh);
82	if (error != 0) {
83		aprint_error(": couldn't map registers (%d)\n", error);
84		return;
85	}
86
87	aprint_naive("\n");
88	aprint_normal(": OHCI\n");
89
90	ahb_claim_device(self,
91	    device_unit(self) == 0 ? IOPOH0EN : IOPOH1EN);
92
93	bus_space_write_4(sc->iot, sc->ioh, OHCI_INTERRUPT_DISABLE,
94	    OHCI_ALL_INTRS);
95
96	out32(USB_CHICKENBITS, in32(USB_CHICKENBITS) | OHCI_INTR_ENABLE);
97
98	error = ohci_init(sc);
99	if (error != 0) {
100		aprint_error_dev(self, "init failed, error = %d\n", error);
101		return;
102	}
103
104	ahb_intr_establish(aaa->aaa_irq, IPL_USB, ohci_intr, sc,
105	    device_xname(self));
106
107	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint,
108	    CFARGS_NONE);
109}
110