1 /* $NetBSD: sni_emmc.c,v 1.10 2021/12/21 06:00:45 nisimura Exp $ */
2
3 /*-
4 * Copyright (c) 2020 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Tohru Nishimura.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*
33 * Socionext SC2A11 SynQuacer eMMC driver
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: sni_emmc.c,v 1.10 2021/12/21 06:00:45 nisimura Exp $");
38
39 #include <sys/param.h>
40 #include <sys/bus.h>
41 #include <sys/intr.h>
42 #include <sys/device.h>
43 #include <sys/errno.h>
44 #include <sys/kernel.h>
45 #include <sys/systm.h>
46
47 #include <machine/endian.h>
48
49 #include <dev/sdmmc/sdhcreg.h>
50 #include <dev/sdmmc/sdhcvar.h>
51 #include <dev/sdmmc/sdmmcvar.h>
52
53 #include <dev/fdt/fdtvar.h>
54 #include <dev/acpi/acpireg.h>
55 #include <dev/acpi/acpivar.h>
56 #include <dev/acpi/acpi_intr.h>
57
58 static int sniemmc_fdt_match(device_t, struct cfdata *, void *);
59 static void sniemmc_fdt_attach(device_t, device_t, void *);
60 static int sniemmc_acpi_match(device_t, struct cfdata *, void *);
61 static void sniemmc_acpi_attach(device_t, device_t, void *);
62
63 struct sniemmc_softc {
64 struct sdhc_softc sc;
65 bus_space_tag_t sc_iot;
66 bus_space_handle_t sc_ioh;
67 bus_addr_t sc_iob;
68 bus_size_t sc_ios;
69 void *sc_ih;
70 struct sdhc_host *sc_hosts[1];
71 bus_dmamap_t sc_dmamap;
72 bus_dma_segment_t sc_segs[1];
73 kcondvar_t sc_cv;
74 int sc_phandle;
75 };
76
77 CFATTACH_DECL_NEW(sniemmc_fdt, sizeof(struct sniemmc_softc),
78 sniemmc_fdt_match, sniemmc_fdt_attach, NULL, NULL);
79
80 CFATTACH_DECL_NEW(sniemmc_acpi, sizeof(struct sniemmc_softc),
81 sniemmc_acpi_match, sniemmc_acpi_attach, NULL, NULL);
82
83 static void sniemmc_attach_i(device_t);
84
85 static const struct device_compatible_entry compat_data[] = {
86 { .compat = "socionext,synquacer-sdhci" },
87 { .compat = "fujitsu,mb86s70-sdhci-3.0" },
88 DEVICE_COMPAT_EOL
89 };
90 static const struct device_compatible_entry compatible[] = {
91 { .compat = "SCX0002" },
92 DEVICE_COMPAT_EOL
93 };
94
95 static int
sniemmc_fdt_match(device_t parent,struct cfdata * match,void * aux)96 sniemmc_fdt_match(device_t parent, struct cfdata *match, void *aux)
97 {
98 struct fdt_attach_args * const faa = aux;
99
100 return of_compatible_match(faa->faa_phandle, compat_data);
101 }
102
103 static void
sniemmc_fdt_attach(device_t parent,device_t self,void * aux)104 sniemmc_fdt_attach(device_t parent, device_t self, void *aux)
105 {
106 struct sniemmc_softc * const sc = device_private(self);
107 struct fdt_attach_args * const faa = aux;
108 const int phandle = faa->faa_phandle;
109 bus_space_handle_t ioh;
110 bus_addr_t addr;
111 bus_size_t size;
112 char intrstr[128];
113
114 aprint_naive("\n");
115 aprint_normal_dev(self, "Socionext eMMC controller\n");
116
117 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0
118 || bus_space_map(faa->faa_bst, addr, size, 0, &ioh) != 0) {
119 aprint_error_dev(self, "unable to map device\n");
120 return;
121 }
122 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
123 aprint_error_dev(self, "failed to decode interrupt\n");
124 goto fail;
125 }
126 sc->sc_ih = fdtbus_intr_establish(phandle, 0, IPL_SDMMC, 0,
127 sdhc_intr, &sc->sc);
128 if (sc->sc_ih == NULL) {
129 aprint_error_dev(self, "couldn't establish interrupt on %s\n",
130 intrstr);
131 goto fail;
132 }
133 aprint_normal_dev(self, "interrupting on %s\n", intrstr);
134
135 sc->sc.sc_dev = self;
136 sc->sc.sc_dmat = faa->faa_dmat;
137 sc->sc.sc_host = sc->sc_hosts;
138 sc->sc_iot = faa->faa_bst;
139 sc->sc_ioh = ioh;
140 sc->sc_iob = addr;
141 sc->sc_ios = size;
142 sc->sc_phandle = phandle;
143
144 config_defer(self, sniemmc_attach_i);
145 return;
146 fail:
147 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
148 return;
149 }
150
151 static int
sniemmc_acpi_match(device_t parent,struct cfdata * match,void * aux)152 sniemmc_acpi_match(device_t parent, struct cfdata *match, void *aux)
153 {
154 struct acpi_attach_args *aa = aux;
155
156 return acpi_compatible_match(aa, compatible);
157 }
158
159 static void
sniemmc_acpi_attach(device_t parent,device_t self,void * aux)160 sniemmc_acpi_attach(device_t parent, device_t self, void *aux)
161 {
162 struct sniemmc_softc * const sc = device_private(self);
163 struct acpi_attach_args *aa = aux;
164 ACPI_HANDLE handle = aa->aa_node->ad_handle;
165 bus_space_handle_t ioh;
166 struct acpi_resources res;
167 struct acpi_mem *mem;
168 struct acpi_irq *irq;
169 ACPI_STATUS rv;
170
171 aprint_naive("\n");
172 aprint_normal(": Socionext eMMC controller\n");
173
174 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
175 &res, &acpi_resource_parse_ops_default);
176 if (ACPI_FAILURE(rv))
177 return;
178 mem = acpi_res_mem(&res, 0);
179 irq = acpi_res_irq(&res, 0);
180 if (mem == NULL || irq == NULL || mem->ar_length == 0) {
181 aprint_error_dev(self, "incomplete resources\n");
182 return;
183 }
184 if (bus_space_map(aa->aa_memt, mem->ar_base, mem->ar_length, 0,
185 &ioh)) {
186 aprint_error_dev(self, "couldn't map registers\n");
187 return;
188 }
189 sc->sc_ih = acpi_intr_establish(self, (uint64_t)handle,
190 IPL_BIO, false, sdhc_intr, &sc->sc, device_xname(self));
191 if (sc->sc_ih == NULL) {
192 aprint_error_dev(self, "couldn't establish interrupt\n");
193 goto fail;
194 }
195
196 sc->sc.sc_dev = self;
197 sc->sc.sc_dmat = aa->aa_dmat;
198 sc->sc.sc_host = sc->sc_hosts;
199 sc->sc_iot = aa->aa_memt;
200 sc->sc_ioh = ioh;
201 sc->sc_ios = mem->ar_length;
202 sc->sc_phandle = 0;
203
204 config_defer(self, sniemmc_attach_i);
205
206 acpi_resource_cleanup(&res);
207 return;
208 fail:
209 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
210 acpi_resource_cleanup(&res);
211 return;
212 }
213
214 static void
sniemmc_attach_i(device_t self)215 sniemmc_attach_i(device_t self)
216 {
217 struct sniemmc_softc * const sc = device_private(self);
218 int error;
219
220 sc->sc.sc_flags = 0;
221 sc->sc.sc_flags |= SDHC_FLAG_32BIT_ACCESS;
222 sc->sc.sc_clkbase = 50000; /* Default to 50MHz */
223
224 aprint_normal_dev(sc->sc.sc_dev, "doing sdhc_host() ...\n");
225 #if 0
226 error = sdhc_host_found(&sc->sc, sc->sc_iot, sc->sc_ioh, sc->sc_ios);
227 #endif
228 error = 0;
229 if (error) {
230 aprint_error_dev(self, "couldn't initialize host, error=%d\n",
231 error);
232 goto fail;
233 }
234 return;
235 fail:
236 if (sc->sc_phandle)
237 fdtbus_intr_disestablish(sc->sc_phandle, sc->sc_ih);
238 else
239 acpi_intr_disestablish(sc->sc_ih);
240 sc->sc_ih = NULL;
241 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
242 return;
243 }
244