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      1 /*	$NetBSD: imx51_usb.c,v 1.7 2021/08/07 16:18:44 thorpej Exp $	*/
      2 /*
      3  * Copyright (c) 2010  Genetec Corporation.  All rights reserved.
      4  * Written by Hiroyuki Bessho for Genetec Corporation.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
     16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     17  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
     19  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25  * POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: imx51_usb.c,v 1.7 2021/08/07 16:18:44 thorpej Exp $");
     29 
     30 #include "locators.h"
     31 #include "opt_imx.h"
     32 
     33 #include <sys/param.h>
     34 #include <sys/systm.h>
     35 #include <sys/conf.h>
     36 #include <sys/kernel.h>
     37 #include <sys/device.h>
     38 #include <sys/intr.h>
     39 #include <sys/bus.h>
     40 
     41 #include <dev/usb/usb.h>
     42 #include <dev/usb/usbdi.h>
     43 #include <dev/usb/usbdivar.h>
     44 #include <dev/usb/usb_mem.h>
     45 
     46 #include <dev/usb/ehcireg.h>
     47 #include <dev/usb/ehcivar.h>
     48 
     49 #include <arm/imx/imx51reg.h>
     50 #include <arm/imx/imx51var.h>
     51 #include <arm/imx/imxusbvar.h>
     52 #include <arm/imx/imxusbreg.h>
     53 
     54 static int imxusbc_search(device_t, cfdata_t, const int *, void *);
     55 static int imxusbc_print(void *, const char *);
     56 
     57 int
     58 imxusbc_attach_common(device_t parent, device_t self, bus_space_tag_t iot,
     59     bus_addr_t addr, bus_size_t size)
     60 {
     61 	struct imxusbc_softc *sc = device_private(self);
     62 
     63 	sc->sc_dev = self;
     64 	sc->sc_iot = iot;
     65 	sc->sc_ehci_size = IMXUSB_EHCI_SIZE;
     66 	sc->sc_ehci_offset = IMXUSB_EHCI_SIZE;
     67 
     68 	/* Map entire USBOH3 registers.  Host controller drivers
     69 	 * re-use subregions of this. */
     70 	if (bus_space_map(iot, addr, size, 0, &sc->sc_ioh))
     71 		return -1;
     72 
     73 	/* attach OTG/EHCI host controllers */
     74 	config_search(self, NULL,
     75 	    CFARGS(.search = imxusbc_search));
     76 
     77 	return 0;
     78 }
     79 
     80 static int
     81 imxusbc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
     82 {
     83 	struct imxusbc_softc *sc = device_private(parent);
     84 	struct imxusbc_attach_args aa;
     85 
     86 	aa.aa_iot = sc->sc_iot;
     87 	aa.aa_ioh = sc->sc_ioh;
     88 	aa.aa_dmat = &arm_generic_dma_tag;
     89 	aa.aa_unit = cf->cf_loc[IMXUSBCCF_UNIT];
     90 	aa.aa_irq = cf->cf_loc[IMXUSBCCF_IRQ];
     91 
     92 	if (config_probe(parent, cf, &aa))
     93 		config_attach(parent, cf, &aa, imxusbc_print, CFARGS_NONE);
     94 
     95 	return 0;
     96 }
     97 
     98 /* ARGSUSED */
     99 static int
    100 imxusbc_print(void *aux, const char *name __unused)
    101 {
    102 	struct imxusbc_attach_args *aa = aux;
    103 
    104 	aprint_normal(" unit %d irq %d", aa->aa_unit, aa->aa_irq);
    105 	return (UNCONF);
    106 }
    107