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
dwctwo_plb_match(device_t parent,cfdata_t match,void * aux)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
dwctwo_plb_attach(device_t parent,device_t self,void * aux)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
dwctwo_plb_deferred(device_t self)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