sni_emmc.c revision 1.8
1/* $NetBSD: sni_emmc.c,v 1.8 2021/01/27 03:10:19 thorpej 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 1.8 2021/01/27 03:10:19 thorpej 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}; 90 91static int 92sniemmc_fdt_match(device_t parent, struct cfdata *match, void *aux) 93{ 94 struct fdt_attach_args * const faa = aux; 95 96 return of_compatible_match(faa->faa_phandle, compat_data); 97} 98 99static void 100sniemmc_fdt_attach(device_t parent, device_t self, void *aux) 101{ 102 struct sniemmc_softc * const sc = device_private(self); 103 struct fdt_attach_args * const faa = aux; 104 const int phandle = faa->faa_phandle; 105 bus_space_handle_t ioh; 106 bus_addr_t addr; 107 bus_size_t size; 108 char intrstr[128]; 109 110 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0 111 || bus_space_map(faa->faa_bst, addr, size, 0, &ioh) != 0) { 112 aprint_error(": unable to map device\n"); 113 return; 114 } 115 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 116 aprint_error(": failed to decode interrupt\n"); 117 goto fail; 118 } 119 sc->sc_ih = fdtbus_intr_establish(phandle, 0, IPL_SDMMC, 0, 120 sdhc_intr, &sc->sc); 121 if (sc->sc_ih == NULL) { 122 aprint_error_dev(self, "couldn't establish interrupt on %s\n", 123 intrstr); 124 goto fail; 125 } 126 127 aprint_naive("\n"); 128 aprint_normal_dev(self, "Socionext eMMC controller\n"); 129 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 130 131 sc->sc.sc_dev = self; 132 sc->sc.sc_dmat = faa->faa_dmat; 133 sc->sc.sc_host = sc->sc_hosts; 134 sc->sc_phandle = phandle; 135 sc->sc_iot = faa->faa_bst; 136 sc->sc_ioh = ioh; 137 sc->sc_iob = addr; 138 sc->sc_ios = size; 139 140 config_defer(self, sniemmc_attach_i); 141 return; 142 fail: 143 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); 144 return; 145} 146 147static int 148sniemmc_acpi_match(device_t parent, struct cfdata *match, void *aux) 149{ 150 static const char * compatible[] = { 151 "SCX0002", 152 NULL 153 }; 154 struct acpi_attach_args *aa = aux; 155 156 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 157 return 0; 158 return acpi_match_hid(aa->aa_node->ad_devinfo, compatible); 159} 160 161static void 162sniemmc_acpi_attach(device_t parent, device_t self, void *aux) 163{ 164 struct sniemmc_softc * const sc = device_private(self); 165 struct acpi_attach_args *aa = aux; 166 bus_space_handle_t ioh; 167 struct acpi_resources res; 168 struct acpi_mem *mem; 169 struct acpi_irq *irq; 170 ACPI_STATUS rv; 171 172 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 173 &res, &acpi_resource_parse_ops_default); 174 if (ACPI_FAILURE(rv)) 175 return; 176 mem = acpi_res_mem(&res, 0); 177 irq = acpi_res_irq(&res, 0); 178 if (mem == NULL || irq == NULL || mem->ar_length == 0) { 179 aprint_error(": incomplete resources\n"); 180 return; 181 } 182 if (bus_space_map(aa->aa_memt, mem->ar_base, mem->ar_length, 0, 183 &ioh)) { 184 aprint_error(": couldn't map registers\n"); 185 return; 186 } 187 sc->sc_ih = acpi_intr_establish(self, 188 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 189 IPL_BIO, false, sdhc_intr, &sc->sc, device_xname(self)); 190 if (sc->sc_ih == NULL) { 191 aprint_error_dev(self, "couldn't establish interrupt\n"); 192 goto fail; 193 } 194 195 aprint_naive("\n"); 196 aprint_normal_dev(self, "Socionext eMMC controller\n"); 197 198 sc->sc.sc_dev = self; 199 sc->sc.sc_dmat = aa->aa_dmat; 200 sc->sc.sc_host = sc->sc_hosts; 201 sc->sc_iot = aa->aa_memt; 202 sc->sc_ioh = ioh; 203 sc->sc_ios = mem->ar_length; 204 205 config_defer(self, sniemmc_attach_i); 206 207 acpi_resource_cleanup(&res); 208 return; 209 fail: 210 bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); 211 acpi_resource_cleanup(&res); 212 return; 213} 214 215static void 216sniemmc_attach_i(device_t self) 217{ 218 struct sniemmc_softc * const sc = device_private(self); 219 int error; 220 221 sc->sc.sc_flags = 0; 222 sc->sc.sc_flags |= SDHC_FLAG_32BIT_ACCESS; 223 sc->sc.sc_clkbase = 50000; /* Default to 50MHz */ 224 225 aprint_normal_dev(sc->sc.sc_dev, "doing sdhc_host() ...\n"); 226#if 0 227 error = sdhc_host_found(&sc->sc, sc->sc_iot, sc->sc_ioh, sc->sc_ios); 228#endif 229 error = 0; 230 if (error) { 231 aprint_error_dev(self, "couldn't intialize host, error=%d\n", 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