sys/arch/arm/at91/at91ohci.c

   1 /*      $Id: at91ohci.c,v 1.3 2009/03/14 15:36:01 dsl Exp $     */
   2 /*      $NetBSD: at91ohci.c,v 1.2 2008/07/03 01:15:38 matt Exp $        */
   3
   4 /*-
   5  * Copyright (c) 2007 Embedtronics Oy.
   6  * All rights reserved.
   7  *
   8  * Based on arch/arm/ep93xx/epohci.c,
   9  * Copyright (c) 2004 Jesse Off
  10  * All rights reserved.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /*
  35  * USB Open Host Controller driver.
  36  *
  37  * OHCI spec: ftp://ftp.compaq.com/pub/supportinformation/papers/hcir1_0a.exe
  38  * USB spec: http://www.usb.org/developers/data/usb11.pdf
  39  */
  40
  41 #include <sys/cdefs.h>
  42 __KERNEL_RCSID(0, "$NetBSD: at91ohci.c,v 1.2 2008/07/03 01:15:38 matt Exp $");
  43
  44 #include <sys/param.h>
  45 #include <sys/systm.h>
  46 #include <sys/kernel.h>
  47 #include <sys/device.h>
  48 #include <sys/proc.h>
  49 #include <sys/queue.h>
  50
  51 /* busdma */
  52 #include <sys/mbuf.h>
  53 #include <uvm/uvm_extern.h>
  54
  55 #include <machine/bus.h>
  56
  57 #include <dev/usb/usb.h>
  58 #include <dev/usb/usbdi.h>
  59 #include <dev/usb/usbdivar.h>
  60 #include <dev/usb/usb_mem.h>
  61
  62 #include <dev/usb/ohcireg.h>
  63 #include <dev/usb/ohcivar.h>
  64
  65 #include <arm/at91/at91reg.h>
  66 #include <arm/at91/at91var.h>
  67
  68 int at91ohci_match(device_t, cfdata_t, void *);
  69 void at91ohci_attach(device_t, device_t, void *);
  70 void at91ohci_callback(device_t );
  71
  72 struct at91ohci_softc {
  73         struct ohci_softc sc;
  74         void    *sc_ih;
  75         int     sc_pid;
  76 };
  77
  78 CFATTACH_DECL(at91ohci, sizeof(struct at91ohci_softc),
  79     at91ohci_match, at91ohci_attach, NULL, NULL);
  80
  81 int
  82 at91ohci_match(device_t parent, cfdata_t match, void *aux)
  83 {
  84         /* AT91X builtin OHCI module */
  85         if (strcmp(match->cf_name, "ohci") == 0 && strcmp(match->cf_atname, "at91ohci") == 0)
  86                 return (2);
  87         return(0);
  88 }
  89
  90 void
  91 at91ohci_attach(device_t parent, device_t self, void *aux)
  92 {
  93         struct at91ohci_softc *sc = (struct at91ohci_softc *)self;
  94         struct at91bus_attach_args *sa = aux;
  95
  96         sc->sc.iot = sa->sa_iot;
  97         sc->sc.sc_bus.dmatag = sa->sa_dmat;
  98         sc->sc_pid = sa->sa_pid;
  99
 100         /* Map I/O space */
 101         if (bus_space_map(sc->sc.iot, sa->sa_addr, sa->sa_size,
 102                           0, &sc->sc.ioh)) {
 103                 printf(": cannot map mem space\n");
 104                 return;
 105         }
 106
 107         /* enable peripheral clock */
 108         at91_peripheral_clock(sc->sc_pid, 1);
 109
 110         printf("\n");
 111
 112         /* Defer the rest until later */
 113         config_defer(self, at91ohci_callback);
 114 }
 115
 116 void
 117 at91ohci_callback(device_t self)
 118 {
 119         struct at91ohci_softc *sc = (struct at91ohci_softc *)self;
 120         usbd_status r;
 121
 122         /* Disable interrupts, so we don't get any spurious ones. */
 123         bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
 124                           OHCI_ALL_INTRS);
 125
 126         strlcpy(sc->sc.sc_vendor, "Atmel", sizeof sc->sc.sc_vendor);
 127
 128         sc->sc_ih = at91_intr_establish(sc->sc_pid, IPL_USB, INTR_HIGH_LEVEL, ohci_intr, sc);
 129         r = ohci_init(&sc->sc);
 130
 131         if (r != USBD_NORMAL_COMPLETION) {
 132                 printf("%s: init failed, error=%d\n", device_xname(self), r);
 133
 134                 at91_intr_disestablish(sc->sc_ih);
 135                 return;
 136         }
 137
 138         /* Attach usb device. */
 139         sc->sc.sc_child = config_found((void *) sc, &sc->sc.sc_bus, usbctlprint);
 140 }