sys/arch/arm/gemini/obio_ehci.c

   1 /*      $NetBSD: obio_ehci.c,v 1.1 2008/10/24 16:48:29 matt Exp $       */
   2
   3 /*
   4  * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Lennart Augustsson (lennart@augustsson.net).
   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: obio_ehci.c,v 1.1 2008/10/24 16:48:29 matt Exp $");
  34
  35 #include "locators.h"
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/device.h>
  41 #include <sys/proc.h>
  42 #include <sys/queue.h>
  43
  44 #include <sys/bus.h>
  45
  46 #include <arm/gemini/gemini_reg.h>
  47 #include <arm/gemini/gemini_obiovar.h>
  48
  49 #include <dev/pci/pcidevs.h>
  50
  51 #include <dev/usb/usb.h>
  52 #include <dev/usb/usbdi.h>
  53 #include <dev/usb/usbdivar.h>
  54 #include <dev/usb/usb_mem.h>
  55
  56 #include <dev/usb/ehcireg.h>
  57 #include <dev/usb/ehcivar.h>
  58
  59 #ifdef EHCI_DEBUG
  60 #define DPRINTF(x)      if (ehcidebug) printf x
  61 extern int ehcidebug;
  62 #else
  63 #define DPRINTF(x)
  64 #endif
  65
  66 #define EHCI_HCOTGDEV_INTR_STATUS               0xc0
  67 #define EHCI_HCOTGDEV_INTR_MASK                 0xc4
  68 #define HC_INT                                  0x04
  69 #define OTG_INT                                 0x02
  70 #define DEV_INT                                 0x01
  71
  72 static int
  73 ehci_obio_intr(void *arg)
  74 {
  75         struct ehci_softc * const sc = arg;
  76         int rv = 0;
  77         uint32_t v;
  78
  79         v = bus_space_read_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_STATUS);
  80         bus_space_write_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_STATUS, v);
  81         if (v & HC_INT)
  82                 rv = ehci_intr(sc);
  83         return rv;
  84 }
  85
  86 static int
  87 ehci_obio_match(device_t parent, cfdata_t match, void *aux)
  88 {
  89         struct obio_attach_args * const obio = aux;
  90
  91         if (obio->obio_addr == GEMINI_USB0_BASE
  92             || obio->obio_addr == GEMINI_USB1_BASE)
  93                 return 1;
  94
  95         return 0;
  96 }
  97
  98 static void
  99 ehci_obio_attach(device_t parent, device_t self, void *aux)
 100 {
 101         struct ehci_softc * const sc = device_private(self);
 102         struct obio_attach_args * const obio = aux;
 103         const char * const devname = device_xname(self);
 104         usbd_status r;
 105
 106         sc->sc_dev = self;
 107         sc->sc_bus.hci_private = sc;
 108         sc->iot = obio->obio_iot;
 109
 110         aprint_naive(": EHCI USB controller\n");
 111         aprint_normal(": EHCI USB controller\n");
 112
 113         /* Map I/O registers */
 114         if (bus_space_map(sc->iot, obio->obio_addr, obio->obio_size, 0,
 115                            &sc->ioh)) {
 116                 aprint_error("%s: can't map memory space\n", devname);
 117                 return;
 118         }
 119
 120         sc->sc_bus.dmatag = obio->obio_dmat;
 121
 122         /* Disable interrupts, so we don't get any spurious ones. */
 123         sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
 124         DPRINTF(("%s: offs=%d\n", devname, sc->sc_offs));
 125         EOWRITE2(sc, EHCI_USBINTR, 0);
 126         bus_space_write_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_MASK,
 127             OTG_INT|DEV_INT);
 128
 129         if (obio->obio_intr != OBIOCF_INTR_DEFAULT) {
 130                 intr_establish(obio->obio_intr, IPL_USB, IST_LEVEL,
 131                     ehci_obio_intr, sc);
 132         }
 133
 134         sc->sc_bus.usbrev = USBREV_2_0;
 135
 136         /* Figure out vendor for root hub descriptor. */
 137         sc->sc_id_vendor = PCI_VENDOR_FARADAY;
 138         strlcpy(sc->sc_vendor, "SL351x", sizeof(sc->sc_vendor));
 139
 140         r = ehci_init(sc);
 141         if (r != USBD_NORMAL_COMPLETION) {
 142                 aprint_error("%s: init failed, error=%d\n", devname, r);
 143                 return;
 144         }
 145
 146         /* Attach usb device. */
 147         sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint);
 148 }
 149
 150 CFATTACH_DECL2_NEW(ehci_obio, sizeof(struct ehci_softc),
 151     ehci_obio_match, ehci_obio_attach, NULL, NULL, NULL, ehci_childdet);