dwctwo_plb.c revision 1.2
1/* $NetBSD: dwctwo_plb.c,v 1.2 2013/11/21 13:52:27 kiyohara 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 1.2 2013/11/21 13:52:27 kiyohara 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 53static int dwctwo_plb_match(device_t, cfdata_t, void *); 54static void dwctwo_plb_attach(device_t, device_t, void *); 55 56static void dwctwo_plb_deferred(device_t); 57 58CFATTACH_DECL_NEW(dwctwo_plb, sizeof(struct dwc2_softc), 59 dwctwo_plb_match, dwctwo_plb_attach, NULL, NULL); 60 61static struct powerpc_bus_space dwctwo_tag = { 62 _BUS_SPACE_LITTLE_ENDIAN | _BUS_SPACE_MEM_TYPE, 63 0x00000000, 64 0x00000000, 65 DWCTWO_SIZE 66}; 67static char ex_storage[EXTENT_FIXED_STORAGE_SIZE(8)] 68 __attribute__((aligned(8))); 69 70 71static int 72dwctwo_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 89static void 90dwctwo_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.dmatag = paa->plb_dmat; 114 115 intr_establish(paa->plb_irq, IST_LEVEL, IPL_USB, dwc2_intr, sc); 116 117 /* Enable the USB interface. */ 118 mtsdr(DCR_SDR0_PFC1, mfsdr(DCR_SDR0_PFC1) | SDR0_PFC1_USBEN); 119 srst0 = mfsdr(DCR_SDR0_SRST0); 120 mtsdr(DCR_SDR0_SRST0, srst0 | SDR0_SRST0_UPRST | SDR0_SRST0_AHB); 121 delay(200 * 1000); /* XXXX */ 122 mtsdr(DCR_SDR0_SRST0, srst0); 123 124 config_defer(self, dwctwo_plb_deferred); 125} 126 127static void 128dwctwo_plb_deferred(device_t self) 129{ 130 struct dwc2_softc *sc = device_private(self); 131 int error; 132 133 error = dwc2_init(sc); 134 if (error != 0) { 135 aprint_error_dev(self, "couldn't initialize host, error=%d\n", 136 error); 137 return; 138 } 139 sc->sc_child = config_found(sc->sc_dev, &sc->sc_bus, usbctlprint); 140} 141