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      1 /*	$Id: at91ohci.c,v 1.9 2021/08/07 16:18:43 thorpej Exp $	*/
      2 /*	$NetBSD: at91ohci.c,v 1.9 2021/08/07 16:18:43 thorpej 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 1.9 2021/08/07 16:18:43 thorpej 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 <sys/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_NEW(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 = device_private(self);
     94 	struct at91bus_attach_args *sa = aux;
     95 
     96 	sc->sc.sc_dev = self;
     97 	sc->sc.sc_bus.ub_hcpriv = sc;
     98 	sc->sc.sc_bus.ub_dmatag = sa->sa_dmat;
     99 	sc->sc.iot = sa->sa_iot;
    100 	sc->sc_pid = sa->sa_pid;
    101 
    102 	/* Map I/O space */
    103 	if (bus_space_map(sc->sc.iot, sa->sa_addr, sa->sa_size,
    104 			  0, &sc->sc.ioh)) {
    105 		printf(": cannot map mem space\n");
    106 		return;
    107 	}
    108 
    109 	sc->sc.sc_size = sa->sa_size;
    110 
    111 	/* enable peripheral clock */
    112 	at91_peripheral_clock(sc->sc_pid, 1);
    113 
    114 	printf("\n");
    115 
    116         /* Defer the rest until later */
    117         config_defer(self, at91ohci_callback);
    118 }
    119 
    120 void
    121 at91ohci_callback(device_t self)
    122 {
    123 	struct at91ohci_softc *sc = device_private(self);
    124 
    125 	/* Disable interrupts, so we don't get any spurious ones. */
    126 	bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
    127 			  OHCI_ALL_INTRS);
    128 
    129 	sc->sc_ih = at91_intr_establish(sc->sc_pid, IPL_USB, INTR_HIGH_LEVEL, ohci_intr, sc);
    130 	int err = ohci_init(&sc->sc);
    131 
    132 	if (err) {
    133 		printf("%s: init failed, error=%d\n", device_xname(self), err);
    134 
    135 		at91_intr_disestablish(sc->sc_ih);
    136 		return;
    137 	}
    138 
    139 	/* Attach usb device. */
    140 	sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint,
    141 	    CFARGS_NONE);
    142 }
    143