sni_emmc.c revision 1.10
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 58static int sniemmc_fdt_match(device_t, struct cfdata *, void *); 59static void sniemmc_fdt_attach(device_t, device_t, void *); 60static int sniemmc_acpi_match(device_t, struct cfdata *, void *); 61static void sniemmc_acpi_attach(device_t, device_t, void *); 62 63struct 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 77CFATTACH_DECL_NEW(sniemmc_fdt, sizeof(struct sniemmc_softc), 78 sniemmc_fdt_match, sniemmc_fdt_attach, NULL, NULL); 79 80CFATTACH_DECL_NEW(sniemmc_acpi, sizeof(struct sniemmc_softc), 81 sniemmc_acpi_match, sniemmc_acpi_attach, NULL, NULL); 82 83static void sniemmc_attach_i(device_t); 84 85static const struct device_compatible_entry compat_data[] = { 86 { .compat = "socionext,synquacer-sdhci" }, 87 { .compat = "fujitsu,mb86s70-sdhci-3.0" }, 88 DEVICE_COMPAT_EOL 89}; 90static const struct device_compatible_entry compatible[] = { 91 { .compat = "SCX0002" }, 92 DEVICE_COMPAT_EOL 93}; 94 95static int 96sniemmc_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 103static void 104sniemmc_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 151static int 152sniemmc_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 159static void 160sniemmc_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 214static void 215sniemmc_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