dwctwo_plb.c revision 1.5 
1/* $NetBSD: dwctwo_plb.c,v 1.5 2016/04/23 10:15:30 skrll 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 1.5 2016/04/23 10:15:30 skrll 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.ub_dmatag = paa->plb_dmat;
114
115	intr_establish(paa->plb_irq, IST_LEVEL, IPL_VM, 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