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      1 /* $NetBSD: dwctwo_plb.c,v 1.8 2021/08/07 16:19:02 thorpej Exp $ */
      2 /*
      3  * Copyright (c) 2013 KIYOHARA Takashi
      4  * All rights reserved.
      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 THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     19  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     23  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     24  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     25  * POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: dwctwo_plb.c,v 1.8 2021/08/07 16:19:02 thorpej Exp $");
     30 
     31 #include <sys/param.h>
     32 #include <sys/bus.h>
     33 #include <sys/device.h>
     34 #include <sys/errno.h>
     35 #include <sys/extent.h>
     36 
     37 #include <powerpc/ibm4xx/cpu.h>
     38 #include <powerpc/ibm4xx/dev/plbvar.h>
     39 
     40 #include <dev/usb/usb.h>
     41 #include <dev/usb/usbdi.h>
     42 #include <dev/usb/usbdivar.h>
     43 #include <dev/usb/usb_mem.h>
     44 
     45 #include <dwc2/dwc2.h>
     46 #include <dwc2/dwc2var.h>
     47 #include "dwc2_core.h"
     48 
     49 #include "locators.h"
     50 
     51 #define DWCTWO_SIZE	0x40000
     52 
     53 static int dwctwo_plb_match(device_t, cfdata_t, void *);
     54 static void dwctwo_plb_attach(device_t, device_t, void *);
     55 
     56 static void dwctwo_plb_deferred(device_t);
     57 
     58 CFATTACH_DECL_NEW(dwctwo_plb, sizeof(struct dwc2_softc),
     59     dwctwo_plb_match, dwctwo_plb_attach, NULL, NULL);
     60 
     61 static struct powerpc_bus_space dwctwo_tag = {
     62 	_BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE,
     63 	0x00000000,
     64 	0x00000000,
     65 	DWCTWO_SIZE
     66 };
     67 static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)]
     68     __attribute__((aligned(8)));
     69 
     70 
     71 static int
     72 dwctwo_plb_match(device_t parent, cfdata_t match, void *aux)
     73 {
     74 	struct plb_attach_args *paa = aux;
     75 
     76 	if (strcmp(paa->plb_name, match->cf_name) != 0)
     77 		return 0;
     78 
     79 	if (match->cf_loc[PLBCF_ADDR] == PLBCF_ADDR_DEFAULT)
     80 		panic("dwctwo_plb_match: wildcard addr not allowed");
     81 	if (match->cf_loc[PLBCF_IRQ] == PLBCF_IRQ_DEFAULT)
     82 		panic("dwctwo_plb_match: wildcard IRQ not allowed");
     83 
     84 	paa->plb_addr = match->cf_loc[PLBCF_ADDR];
     85 	paa->plb_irq = match->cf_loc[PLBCF_IRQ];
     86 	return 1;
     87 }
     88 
     89 static void
     90 dwctwo_plb_attach(device_t parent, device_t self, void *aux)
     91 {
     92 	struct dwc2_softc *sc = device_private(self);
     93 	struct plb_attach_args *paa = aux;
     94 	prop_dictionary_t dict = device_properties(self);
     95 	uint32_t srst0;
     96 
     97 	sc->sc_dev = self;
     98 
     99 	/* get core parameters */
    100 	if (!prop_dictionary_get_uint32(dict, "params",
    101 	    (uint32_t *)&sc->sc_params)) {
    102 		aprint_error("struct dwc2_core_params not found\n");
    103 		return;
    104 	}
    105 
    106 	dwctwo_tag.pbs_base = paa->plb_addr;
    107 	dwctwo_tag.pbs_limit += paa->plb_addr;
    108 	if (bus_space_init(&dwctwo_tag, "dwctwotag", ex_storage,
    109 	    sizeof(ex_storage)))
    110 		panic("dwctwo_attach: Failed to initialise opb_tag");
    111 	sc->sc_iot = &dwctwo_tag;
    112 	bus_space_map(sc->sc_iot, paa->plb_addr, DWCTWO_SIZE, 0, &sc->sc_ioh);
    113 	sc->sc_bus.ub_dmatag = paa->plb_dmat;
    114 
    115 	intr_establish_xname(paa->plb_irq, IST_LEVEL, IPL_VM, dwc2_intr, sc,
    116 	    device_xname(self));
    117 
    118 	/* Enable the USB interface. */
    119 	mtsdr(DCR_SDR0_PFC1, mfsdr(DCR_SDR0_PFC1) | SDR0_PFC1_USBEN);
    120 	srst0 = mfsdr(DCR_SDR0_SRST0);
    121 	mtsdr(DCR_SDR0_SRST0, srst0 | SDR0_SRST0_UPRST | SDR0_SRST0_AHB);
    122 	delay(200 * 1000);	/* XXXX */
    123 	mtsdr(DCR_SDR0_SRST0, srst0);
    124 
    125 	config_defer(self, dwctwo_plb_deferred);
    126 }
    127 
    128 static void
    129 dwctwo_plb_deferred(device_t self)
    130 {
    131 	struct dwc2_softc *sc = device_private(self);
    132 	int error;
    133 
    134 	error = dwc2_init(sc);
    135 	if (error != 0) {
    136 		aprint_error_dev(self, "couldn't initialize host, error=%d\n",
    137 		    error);
    138 		return;
    139 	}
    140 	sc->sc_child = config_found(sc->sc_dev, &sc->sc_bus, usbctlprint,
    141 	    CFARGS_NONE);
    142 }
    143