Home | History | Annotate | Line # | Download | only in ingenic
ingenic_ehci.c revision 1.1 
      1 /*	$NetBSD: ingenic_ehci.c,v 1.1 2015/03/08 17:14:27 macallan Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2015 Michael Lorenz
      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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 __KERNEL_RCSID(0, "$NetBSD: ingenic_ehci.c,v 1.1 2015/03/08 17:14:27 macallan Exp $");
     31 
     32 #include <sys/param.h>
     33 #include <sys/systm.h>
     34 #include <sys/device.h>
     35 #include <sys/mutex.h>
     36 #include <sys/bus.h>
     37 #include <sys/workqueue.h>
     38 
     39 #include <mips/ingenic/ingenic_var.h>
     40 #include <mips/ingenic/ingenic_regs.h>
     41 
     42 #include <dev/usb/usb.h>
     43 #include <dev/usb/usbdi.h>
     44 #include <dev/usb/usbdivar.h>
     45 #include <dev/usb/usb_mem.h>
     46 
     47 #include <dev/usb/ehcireg.h>
     48 #include <dev/usb/ehcivar.h>
     49 
     50 #include "opt_ingenic.h"
     51 #include "ohci.h"
     52 
     53 static int ingenic_ehci_match(device_t, struct cfdata *, void *);
     54 static void ingenic_ehci_attach(device_t, device_t, void *);
     55 
     56 CFATTACH_DECL_NEW(ingenic_ehci, sizeof(struct ehci_softc),
     57     ingenic_ehci_match, ingenic_ehci_attach, NULL, NULL);
     58 
     59 #if NOHCI > 0
     60 extern device_t ingenic_ohci;
     61 #endif
     62 
     63 /* ARGSUSED */
     64 static int
     65 ingenic_ehci_match(device_t parent, struct cfdata *match, void *aux)
     66 {
     67 	struct apbus_attach_args *aa = aux;
     68 
     69 	if (strcmp(aa->aa_name, "ehci") != 0)
     70 		return 0;
     71 
     72 	return 1;
     73 }
     74 
     75 /* ARGSUSED */
     76 static void
     77 ingenic_ehci_attach(device_t parent, device_t self, void *aux)
     78 {
     79 	struct ehci_softc *sc = device_private(self);
     80 	struct apbus_attach_args *aa = aux;
     81 	void *ih;
     82 	int error, status;
     83 	uint32_t reg;
     84 
     85 	sc->sc_dev = self;
     86 
     87 	sc->iot = aa->aa_bst;
     88 	sc->sc_bus.dmatag = aa->aa_dmat;
     89 	sc->sc_bus.hci_private = sc;
     90 	sc->sc_size = 0x1000;
     91 	sc->sc_bus.usbrev = USBREV_2_0;
     92 
     93 	if (aa->aa_addr == 0)
     94 		aa->aa_addr = JZ_EHCI_BASE;
     95 
     96 	error = bus_space_map(aa->aa_bst, aa->aa_addr, 0x1000, 0, &sc->ioh);
     97 	if (error) {
     98 		aprint_error_dev(self,
     99 		    "can't map registers for %s: %d\n", aa->aa_name, error);
    100 		return;
    101 	}
    102 
    103 	aprint_naive(": EHCI USB controller\n");
    104 	aprint_normal(": EHCI USB controller\n");
    105 
    106 	/*
    107 	 * voodoo from the linux driver:
    108 	 * select utmi data bus width of controller to 16bit
    109 	 */
    110 	reg = bus_space_read_4(sc->iot, sc->ioh,  0xb0);
    111 	reg |= 1 << 6;
    112 	bus_space_write_4(sc->iot, sc->ioh,  0xb0, reg);
    113 
    114 	/* Disable EHCI interrupts */
    115 	bus_space_write_4(sc->iot, sc->ioh, EHCI_USBINTR, 0);
    116 
    117 	ih = evbmips_intr_establish(20, ehci_intr, sc);
    118 
    119 	if (ih == NULL) {
    120 		aprint_error_dev(self, "failed to establish interrupt %d\n",
    121 		     20);
    122 		goto fail;
    123 	}
    124 
    125 #if NOHCI > 0
    126 	if (ingenic_ohci != NULL) {
    127 		sc->sc_ncomp = 1;
    128 		sc->sc_comps[0] = ingenic_ohci;
    129 	} else
    130 		sc->sc_ncomp = 0;
    131 #else
    132 	sc->sc_ncomp = 0;
    133 #endif
    134 
    135 	status = ehci_init(sc);
    136 	if (status != USBD_NORMAL_COMPLETION) {
    137 		aprint_error_dev(self, "init failed, error=%d\n", status);
    138 		goto fail;
    139 	}
    140 
    141 	/* Attach USB device */
    142 	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
    143 
    144 	return;
    145 
    146 fail:
    147 	if (ih) {
    148 		evbmips_intr_disestablish(ih);
    149 	}
    150 	bus_space_unmap(sc->iot, sc->ioh, 0x1000);
    151 }
    152