1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/* $NetBSD: dwcmmc_acpi.c,v 1.2 2022/02/06 15:48:12 jmcneill Exp $ */
/*-
* Copyright (c) 2022 Jared McNeill <jmcneill@invisible.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dwcmmc_acpi.c,v 1.2 2022/02/06 15:48:12 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/device.h>
#include <dev/ic/dwc_mmc_var.h>
#include <dev/ic/dwc_mmc_reg.h>
#include <dev/sdmmc/sdmmcchip.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpi_intr.h>
/*
* FIXME: Remove separate compat_data arrays once acpi_compatible_lookup
* grows support for DT link devices.
*/
static const struct device_compatible_entry rockchip_compat_data[] = {
{ .compat = "rockchip,rk3288-dw-mshc" },
DEVICE_COMPAT_EOL
};
static const struct device_compatible_entry compat_data[] = {
{ .compat = "snps,dw-mshc" },
DEVICE_COMPAT_EOL
};
static int dwcmmc_acpi_match(device_t, cfdata_t, void *);
static void dwcmmc_acpi_attach(device_t, device_t, void *);
static int dwcmmc_acpi_init_props(struct dwc_mmc_softc *, ACPI_HANDLE);
CFATTACH_DECL_NEW(dwcmmc_acpi, sizeof(struct dwc_mmc_softc),
dwcmmc_acpi_match, dwcmmc_acpi_attach, NULL, NULL);
static int
dwcmmc_acpi_match(device_t parent, cfdata_t cf, void *aux)
{
struct acpi_attach_args *aa = aux;
int match;
match = acpi_compatible_match(aa, rockchip_compat_data);
if (!match) {
match = acpi_compatible_match(aa, compat_data);
}
return match;
}
static void
dwcmmc_acpi_attach(device_t parent, device_t self, void *aux)
{
struct dwc_mmc_softc * const sc = device_private(self);
struct acpi_attach_args *aa = aux;
ACPI_HANDLE handle = aa->aa_node->ad_handle;
struct acpi_resources res;
struct acpi_mem *mem;
struct acpi_irq *irq;
ACPI_STATUS rv;
int error;
void *ih;
sc->sc_dev = self;
rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS",
&res, &acpi_resource_parse_ops_default);
if (ACPI_FAILURE(rv)) {
return;
}
sc->sc_flags = DWC_MMC_F_USE_HOLD_REG | DWC_MMC_F_DMA;
if (acpi_compatible_match(aa, rockchip_compat_data)) {
sc->sc_ciu_div = 2;
sc->sc_intr_cardmask = DWC_MMC_INT_SDIO_INT(8);
}
mem = acpi_res_mem(&res, 0);
if (mem == NULL) {
aprint_error_dev(self, "couldn't find mem resource\n");
goto done;
}
irq = acpi_res_irq(&res, 0);
if (irq == NULL) {
aprint_error_dev(self, "couldn't find irq resource\n");
goto done;
}
sc->sc_bst = aa->aa_memt;
error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length,
0, &sc->sc_bsh);
if (error != 0) {
aprint_error_dev(self, "couldn't map registers\n");
goto done;
}
sc->sc_dmat = aa->aa_dmat;
if (dwcmmc_acpi_init_props(sc, handle) != 0) {
goto done;
}
if (dwc_mmc_init(sc) != 0) {
goto done;
}
ih = acpi_intr_establish(self, (uint64_t)(uintptr_t)handle, IPL_NET,
false, dwc_mmc_intr, sc, device_xname(self));
if (ih == NULL) {
aprint_error_dev(self, "couldn't establish interrupt\n");
goto done;
}
done:
acpi_resource_cleanup(&res);
}
static int
dwcmmc_acpi_init_props(struct dwc_mmc_softc *sc, ACPI_HANDLE handle)
{
ACPI_INTEGER ival;
bool bval;
/* Defaults */
sc->sc_fifo_depth = 0;
sc->sc_clock_freq = UINT_MAX;
sc->sc_bus_width = 4;
/* Get settings from DSD properties */
if (ACPI_SUCCESS(acpi_dsd_integer(handle, "fifo-depth", &ival))) {
sc->sc_fifo_depth = ival;
}
if (ACPI_SUCCESS(acpi_dsd_integer(handle, "max-frequency", &ival))) {
sc->sc_clock_freq = ival;
}
if (ACPI_SUCCESS(acpi_dsd_integer(handle, "bus-width", &ival))) {
sc->sc_bus_width = ival;
}
bval = false;
acpi_dsd_bool(handle, "non-removable", &bval);
if (bval) {
sc->sc_flags |= DWC_MMC_F_NON_REMOVABLE;
}
bval = false;
acpi_dsd_bool(handle, "broken-cd", &bval);
if (bval) {
sc->sc_flags |= DWC_MMC_F_BROKEN_CD;
}
if (sc->sc_clock_freq == 0 || sc->sc_clock_freq == UINT_MAX) {
aprint_error_dev(sc->sc_dev, "clock frequency not specified\n");
return ENXIO;
}
return 0;
}
|