Home | History | Annotate | Line # | Download | only in dev 
      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
     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
     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