1 /* $NetBSD: zz9k_usb.c,v 1.1 2023/05/03 13:49:30 phx Exp $ */
2
3 /*
4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Alain Runa.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: zz9k_usb.c,v 1.1 2023/05/03 13:49:30 phx Exp $");
33
34 /* miscellaneous */
35 #include <sys/types.h> /* size_t */
36 #include <sys/stdint.h> /* uintXX_t */
37 #include <sys/stdbool.h> /* bool */
38
39 /* driver(9) */
40 #include <sys/param.h> /* NODEV */
41 #include <sys/device.h> /* CFATTACH_DECL_NEW(), device_priv() */
42 #include <sys/errno.h> /* . */
43
44 /* bus_space(9) and zorro bus */
45 #include <sys/bus.h> /* bus_space_xxx(), bus_space_xxx_t */
46 #include <sys/cpu.h> /* kvtop() */
47 #include <sys/systm.h> /* aprint_xxx() */
48
49 /* zz9k related */
50 #include <amiga/dev/zz9kvar.h> /* zz9kbus_attach_args */
51 #include <amiga/dev/zz9kreg.h> /* ZZ9000 registers */
52 #include "zz9k_usb.h" /* NZZ9K_USB */
53
54
55 /* The allmighty softc structure */
56 struct zzusb_softc {
57 device_t sc_dev;
58 struct bus_space_tag sc_bst;
59 bus_space_tag_t sc_iot;
60 bus_space_handle_t sc_regh;
61 };
62
63 /* driver(9) essentials */
64 static int zzusb_match(device_t parent, cfdata_t match, void *aux);
65 static void zzusb_attach(device_t parent, device_t self, void *aux);
66 CFATTACH_DECL_NEW(zz9k_usb, sizeof(struct zzusb_softc),
67 zzusb_match, zzusb_attach, NULL, NULL);
68
69
70 /* Go ahead, make my day. */
71
72 static int
zzusb_match(device_t parent,cfdata_t match,void * aux)73 zzusb_match(device_t parent, cfdata_t match, void *aux)
74 {
75 struct zz9kbus_attach_args *bap = aux;
76
77 if (strcmp(bap->zzaa_name, "zz9k_usb") != 0)
78 return 0;
79
80 return 1;
81 }
82
83 static void
zzusb_attach(device_t parent,device_t self,void * aux)84 zzusb_attach(device_t parent, device_t self, void *aux)
85 {
86 struct zz9kbus_attach_args *bap = aux;
87 struct zzusb_softc *sc = device_private(self);
88 struct zzusb_softc *psc = device_private(parent);
89
90 sc->sc_dev = self;
91 sc->sc_bst.base = bap->zzaa_base;
92 sc->sc_bst.absm = &amiga_bus_stride_1;
93 sc->sc_iot = &sc->sc_bst;
94 sc->sc_regh = psc->sc_regh;
95
96 uint16_t capacity = ZZREG_R(ZZ9K_USB_CAPACITY);
97 aprint_normal(": USB device %sdetected.\n",
98 (capacity == 0) ? "not " : "");
99 aprint_normal_dev (sc->sc_dev,
100 "MNT ZZ9000 USB driver is not implemented yet.\n");
101
102 aprint_debug_dev(sc->sc_dev, "[DEBUG] registers at %p/%p (pa/va)\n",
103 (void *)kvtop((void *)sc->sc_regh),
104 bus_space_vaddr(sc->sc_iot, sc->sc_regh));
105
106 /* to be implemented */
107 }
108