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slhci_zbus.c revision 1.2 
      1 /*	$NetBSD: slhci_zbus.c,v 1.2 2016/04/23 10:15:27 skrll Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2013 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Radoslaw Kujawa.
      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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: slhci_zbus.c,v 1.2 2016/04/23 10:15:27 skrll Exp $");
     34 
     35 /*
     36  * Thylacine driver.
     37  * Inspired by slhci_intio.c.
     38  */
     39 
     40 #include <sys/param.h>
     41 #include <sys/device.h>
     42 #include <sys/malloc.h>
     43 #include <sys/systm.h>
     44 #include <sys/bus.h>
     45 
     46 #include <amiga/amiga/device.h>
     47 #include <amiga/amiga/isr.h>
     48 
     49 #include <amiga/dev/zbusvar.h>
     50 
     51 #include <dev/usb/usb.h>
     52 #include <dev/usb/usbdi.h>
     53 #include <dev/usb/usbdivar.h>
     54 
     55 #include <dev/ic/sl811hsreg.h>
     56 #include <dev/ic/sl811hsvar.h>
     57 
     58 #define THYLACINE_SLHCI_PWR_OFFSET	0x100
     59 #define THYLACINE_SLHCI_ADDR_OFFSET	0x1
     60 #define THYLACINE_SLHCI_DATA_STRIDE	0x4000
     61 #define THYLACINE_SIZE			0x8000
     62 
     63 static int	slhci_zbus_match(device_t, cfdata_t , void *);
     64 static void	slhci_zbus_attach(device_t, device_t, void *);
     65 static void	slhci_zbus_enable_power(void *, enum power_change);
     66 
     67 struct slhci_zbus_softc {
     68 	struct slhci_softc	sc_sc;
     69 
     70 	struct bus_space_tag	sc_bst;
     71 	struct isr		sc_isr;
     72 };
     73 
     74 CFATTACH_DECL_NEW(slhci_zbus, sizeof(struct slhci_zbus_softc),
     75     slhci_zbus_match, slhci_zbus_attach, NULL, NULL);
     76 
     77 static int
     78 slhci_zbus_match(device_t parent, cfdata_t cf, void *aux)
     79 {
     80 	struct zbus_args *zap = aux;
     81 
     82 	/* Thylacine */
     83 	if (zap->manid == 0x1392 && zap->prodid == 0x1) {
     84 			return 1;
     85 	}
     86 
     87 	return 0;
     88 }
     89 
     90 static void
     91 slhci_zbus_attach(device_t parent, device_t self, void *aux)
     92 {
     93 	struct slhci_zbus_softc *zsc;
     94 	struct slhci_softc *sc;
     95 	struct zbus_args *zap;
     96 	bus_space_tag_t iot;
     97 	bus_space_handle_t ioh;
     98 
     99 	zap = aux;
    100 	zsc = device_private(self);
    101 	sc = &zsc->sc_sc;
    102 	sc->sc_dev = self;
    103 	sc->sc_bus.ub_hcpriv = sc;
    104 
    105 	zsc->sc_bst.base = (bus_addr_t)zap->va;
    106 	zsc->sc_bst.absm = &amiga_bus_stride_1;
    107 	iot = &zsc->sc_bst;
    108 
    109 	aprint_normal(": Thylacine USB Host Controller\n");
    110 
    111 	if (bus_space_map(iot, THYLACINE_SLHCI_ADDR_OFFSET, THYLACINE_SIZE, 0,
    112 	    &ioh)) {
    113 		aprint_error_dev(sc->sc_dev, "can't map the bus\n");
    114 	}
    115 
    116 	slhci_preinit(sc, slhci_zbus_enable_power, iot, ioh, 500,
    117 	   THYLACINE_SLHCI_DATA_STRIDE);
    118 
    119 	/* Attach interrupt routine. */
    120 	zsc->sc_isr.isr_intr = slhci_intr;
    121 	zsc->sc_isr.isr_arg = sc;
    122 	zsc->sc_isr.isr_ipl = 6;
    123 	add_isr(&zsc->sc_isr);
    124 
    125 	slhci_attach(sc);
    126 
    127 }
    128 
    129 static void
    130 slhci_zbus_enable_power(void *arg, enum power_change mode)
    131 {
    132 	struct slhci_zbus_softc *zsc = arg;
    133 
    134 	/*
    135 	 * The hardware is dumb. Changing power mode depends only on A8 being
    136 	 * low or high.
    137 	 */
    138 	if (mode == POWER_ON)
    139 		bus_space_read_1(zsc->sc_sc.sc_iot, zsc->sc_sc.sc_ioh,
    140 		    THYLACINE_SLHCI_DATA_STRIDE);
    141 	else
    142 		bus_space_read_1(zsc->sc_sc.sc_iot, zsc->sc_sc.sc_ioh,
    143 		    THYLACINE_SLHCI_PWR_OFFSET);
    144 }
    145 
    146