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      1 /*	$NetBSD: rmixl_ehci.c,v 1.8 2021/08/07 16:18:59 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998, 1999, 2000, 2002, 2003 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Herb Peyerl of Middle Digital Inc.
      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: rmixl_ehci.c,v 1.8 2021/08/07 16:18:59 thorpej Exp $");
     34 
     35 #include "locators.h"
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <sys/bus.h>
     42 
     43 #include <mips/rmi/rmixlreg.h>
     44 #include <mips/rmi/rmixlvar.h>
     45 #include <mips/rmi/rmixl_intr.h>
     46 #include <mips/rmi/rmixl_usbivar.h>
     47 
     48 #include <dev/usb/usb.h>
     49 #include <dev/usb/usbdi.h>
     50 #include <dev/usb/usbdivar.h>
     51 #include <dev/usb/usb_mem.h>
     52 
     53 #include <dev/usb/ehcireg.h>
     54 #include <dev/usb/ehcivar.h>
     55 
     56 
     57 static int	rmixl_ehci_match(device_t, cfdata_t, void *);
     58 static void	rmixl_ehci_attach(device_t, device_t, void *);
     59 
     60 
     61 CFATTACH_DECL_NEW(rmixl_ehci, sizeof (ehci_softc_t),
     62     rmixl_ehci_match, rmixl_ehci_attach, NULL, NULL);
     63 
     64 int
     65 rmixl_ehci_match(device_t parent, cfdata_t match, void *aux)
     66 {
     67 	struct rmixl_usbi_attach_args *usbi = aux;
     68 
     69         if (usbi->usbi_addr == (RMIXL_IO_DEV_USB_A + RMIXL_USB_HOST_EHCI_BASE))
     70                 return rmixl_probe_4((volatile uint32_t *)
     71 			RMIXL_IOREG_VADDR(usbi->usbi_addr));
     72 
     73         return 0;
     74 }
     75 
     76 void
     77 rmixl_ehci_attach(device_t parent, device_t self, void *aux)
     78 {
     79 	ehci_softc_t * const sc = device_private(self);
     80 	rmixl_usbi_softc_t * const psc = device_private(parent);
     81 	struct rmixl_usbi_attach_args * const usbi = aux;
     82 	void *ih = NULL;
     83 	uint32_t r;
     84 
     85 	/* check state of IO_AD9 signal latched in GPIO Reset Config reg */
     86 	r = RMIXL_IOREG_READ(RMIXL_IO_DEV_GPIO + RMIXL_GPIO_RESET_CFG);
     87 	if ((r & RMIXL_GPIO_RESET_CFG_USB_DEV) == 0) {
     88 		aprint_error_dev(self,
     89 			"IO_AD9 selects Device mode, abort Host attach\n");
     90 		return;
     91 	}
     92 
     93 	sc->sc_dev = self;
     94 	sc->sc_bus.ub_hcpriv = sc;
     95 	sc->iot = usbi->usbi_el_bst;
     96 	sc->sc_size = usbi->usbi_size;
     97 	sc->sc_bus.ub_dmatag = usbi->usbi_dmat;
     98 	sc->sc_bus.ub_revision = USBREV_1_0;
     99 
    100 	/*
    101 	 * Grab the companion OHCI devices from our parent.
    102 	 */
    103 	if (psc->sc_ohci_devs[1] != NULL) {
    104 		sc->sc_comps[0] = psc->sc_ohci_devs[0];
    105 		sc->sc_comps[1] = psc->sc_ohci_devs[1];
    106 		sc->sc_ncomp = 2;
    107 	} else {
    108 		sc->sc_comps[0] = psc->sc_ohci_devs[0];
    109 		sc->sc_ncomp = 1;
    110 	}
    111 
    112 	if (bus_space_map(sc->iot, usbi->usbi_addr, sc->sc_size, 0, &sc->ioh)) {
    113 		aprint_error_dev(self, "unable to map registers\n");
    114 		return;
    115 	}
    116 
    117 	/* get offset to operational regs */
    118 	sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH);
    119 
    120 	/* Disable EHCI interrupts */
    121 	EOWRITE4(sc, EHCI_USBINTR, 0);
    122 
    123 	/* establish interrupt */
    124 	if (usbi->usbi_intr != RMIXL_USBICF_INTR_DEFAULT) {
    125 		ih = rmixl_usbi_intr_establish(device_private(parent),
    126 			usbi->usbi_intr, ehci_intr, sc);
    127 		if (ih == NULL)
    128 			panic("%s: couldn't establish interrupt",
    129 				device_xname(self));
    130 	}
    131 
    132 	int err = ehci_init(sc);
    133 	if (err) {
    134 		aprint_error_dev(self, "init failed, error=%d\n", err);
    135 		if (ih != NULL)
    136 			rmixl_intr_disestablish(ih);
    137 		return;
    138 	}
    139 
    140 	/* Attach USB device */
    141 	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE);
    142 }
    143 
    144