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ingenic_ehci.c revision 1.3 
      1 /*	$NetBSD: ingenic_ehci.c,v 1.3 2015/03/17 09:27:09 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 1.3 2015/03/17 09:27:09 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 <dev/usb/usbdevs.h>
     51 
     52 #include "opt_ingenic.h"
     53 #include "ohci.h"
     54 
     55 static int ingenic_ehci_match(device_t, struct cfdata *, void *);
     56 static void ingenic_ehci_attach(device_t, device_t, void *);
     57 
     58 CFATTACH_DECL_NEW(ingenic_ehci, sizeof(struct ehci_softc),
     59     ingenic_ehci_match, ingenic_ehci_attach, NULL, NULL);
     60 
     61 #if NOHCI > 0
     62 extern device_t ingenic_ohci;
     63 #endif
     64 
     65 /* ARGSUSED */
     66 static int
     67 ingenic_ehci_match(device_t parent, struct cfdata *match, void *aux)
     68 {
     69 	struct apbus_attach_args *aa = aux;
     70 
     71 	if (strcmp(aa->aa_name, "ehci") != 0)
     72 		return 0;
     73 
     74 	return 1;
     75 }
     76 
     77 /* ARGSUSED */
     78 static void
     79 ingenic_ehci_attach(device_t parent, device_t self, void *aux)
     80 {
     81 	struct ehci_softc *sc = device_private(self);
     82 	struct apbus_attach_args *aa = aux;
     83 	void *ih;
     84 	int error, status;
     85 	uint32_t reg;
     86 
     87 	sc->sc_dev = self;
     88 
     89 	sc->iot = aa->aa_bst;
     90 	sc->sc_bus.dmatag = aa->aa_dmat;
     91 	sc->sc_bus.hci_private = sc;
     92 	sc->sc_size = 0x1000;
     93 	sc->sc_bus.usbrev = USBREV_2_0;
     94 
     95 	if (aa->aa_addr == 0)
     96 		aa->aa_addr = JZ_EHCI_BASE;
     97 
     98 	error = bus_space_map(aa->aa_bst, aa->aa_addr, 0x1000, 0, &sc->ioh);
     99 	if (error) {
    100 		aprint_error_dev(self,
    101 		    "can't map registers for %s: %d\n", aa->aa_name, error);
    102 		return;
    103 	}
    104 
    105 	aprint_naive(": EHCI USB controller\n");
    106 	aprint_normal(": EHCI USB controller\n");
    107 
    108 	/*
    109 	 * voodoo from the linux driver:
    110 	 * select utmi data bus width of controller to 16bit
    111 	 */
    112 	reg = bus_space_read_4(sc->iot, sc->ioh,  0xb0);
    113 	reg |= 1 << 6;
    114 	bus_space_write_4(sc->iot, sc->ioh,  0xb0, reg);
    115 
    116 	/* Disable EHCI interrupts */
    117 	bus_space_write_4(sc->iot, sc->ioh, EHCI_USBINTR, 0);
    118 
    119 	ih = evbmips_intr_establish(aa->aa_irq, ehci_intr, sc);
    120 
    121 	if (ih == NULL) {
    122 		aprint_error_dev(self, "failed to establish interrupt %d\n",
    123 		     aa->aa_irq);
    124 		goto fail;
    125 	}
    126 
    127 #if NOHCI > 0
    128 	if (ingenic_ohci != NULL) {
    129 		sc->sc_ncomp = 1;
    130 		sc->sc_comps[0] = ingenic_ohci;
    131 	} else
    132 		sc->sc_ncomp = 0;
    133 #else
    134 	sc->sc_ncomp = 0;
    135 #endif
    136 	sc->sc_id_vendor = USB_VENDOR_INGENIC;
    137 	strlcpy(sc->sc_vendor, "Ingenic", sizeof(sc->sc_vendor));
    138 
    139 	status = ehci_init(sc);
    140 	if (status != USBD_NORMAL_COMPLETION) {
    141 		aprint_error_dev(self, "init failed, error=%d\n", status);
    142 		goto fail;
    143 	}
    144 
    145 	/* Attach USB device */
    146 	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
    147 
    148 	return;
    149 
    150 fail:
    151 	if (ih) {
    152 		evbmips_intr_disestablish(ih);
    153 	}
    154 	bus_space_unmap(sc->iot, sc->ioh, 0x1000);
    155 }
    156