sdhc_acpi.c revision 1.10
1 /* $NetBSD: sdhc_acpi.c,v 1.10 2020/02/01 13:09:08 jmcneill Exp $ */ 2 3 /* 4 * Copyright (c) 2016 Kimihiro Nonaka <nonaka (at) NetBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 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 WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __KERNEL_RCSID(0, "$NetBSD: sdhc_acpi.c,v 1.10 2020/02/01 13:09:08 jmcneill Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/device.h> 33 #include <sys/systm.h> 34 #include <sys/kmem.h> 35 36 #include <dev/acpi/acpireg.h> 37 #include <dev/acpi/acpivar.h> 38 #include <dev/acpi/acpi_intr.h> 39 40 #include <dev/sdmmc/sdhcreg.h> 41 #include <dev/sdmmc/sdhcvar.h> 42 #include <dev/sdmmc/sdmmcvar.h> 43 44 #define _COMPONENT ACPI_RESOURCE_COMPONENT 45 ACPI_MODULE_NAME ("sdhc_acpi") 46 47 static int sdhc_acpi_match(device_t, cfdata_t, void *); 48 static void sdhc_acpi_attach(device_t, device_t, void *); 49 static int sdhc_acpi_detach(device_t, int); 50 static bool sdhc_acpi_resume(device_t, const pmf_qual_t *); 51 52 struct sdhc_acpi_softc { 53 struct sdhc_softc sc; 54 bus_space_tag_t sc_memt; 55 bus_space_handle_t sc_memh; 56 bus_size_t sc_memsize; 57 void *sc_ih; 58 59 ACPI_HANDLE sc_crs, sc_srs; 60 ACPI_BUFFER sc_crs_buffer; 61 }; 62 63 CFATTACH_DECL_NEW(sdhc_acpi, sizeof(struct sdhc_acpi_softc), 64 sdhc_acpi_match, sdhc_acpi_attach, sdhc_acpi_detach, NULL); 65 66 static void sdhc_acpi_intel_emmc_hw_reset(struct sdhc_softc *, 67 struct sdhc_host *); 68 69 static const struct sdhc_acpi_slot { 70 const char *hid; 71 const char *uid; 72 int type; 73 #define SLOT_TYPE_SD 0 /* SD or SDIO */ 74 #define SLOT_TYPE_EMMC 1 /* eMMC */ 75 } sdhc_acpi_slot_map[] = { 76 { "80865ACA", NULL, SLOT_TYPE_SD }, 77 { "80865ACC", NULL, SLOT_TYPE_EMMC }, 78 { "80865AD0", NULL, SLOT_TYPE_SD }, 79 { "80860F14", "1", SLOT_TYPE_EMMC }, 80 { "80860F14", "3", SLOT_TYPE_SD }, 81 { "80860F16", NULL, SLOT_TYPE_SD }, 82 { "INT33BB", "2", SLOT_TYPE_SD }, 83 { "INT33BB", "3", SLOT_TYPE_SD }, 84 { "INT33C6", NULL, SLOT_TYPE_SD }, 85 { "INT3436", NULL, SLOT_TYPE_SD }, 86 { "INT344D", NULL, SLOT_TYPE_SD }, 87 { "PNP0D40", NULL, SLOT_TYPE_SD }, 88 { "PNP0FFF", "3", SLOT_TYPE_SD }, 89 }; 90 91 static const struct sdhc_acpi_slot * 92 sdhc_acpi_find_slot(ACPI_DEVICE_INFO *ad) 93 { 94 const struct sdhc_acpi_slot *slot; 95 const char *hid, *uid; 96 size_t i; 97 98 hid = ad->HardwareId.String; 99 uid = ad->UniqueId.String; 100 101 if (!(ad->Valid & ACPI_VALID_HID) || hid == NULL) 102 return NULL; 103 104 for (i = 0; i < __arraycount(sdhc_acpi_slot_map); i++) { 105 slot = &sdhc_acpi_slot_map[i]; 106 const char * const slot_id[] = { slot->hid, NULL }; 107 if (acpi_match_hid(ad, slot_id)) { 108 if (slot->uid == NULL || 109 ((ad->Valid & ACPI_VALID_UID) != 0 && 110 uid != NULL && 111 strcmp(uid, slot->uid) == 0)) 112 return slot; 113 } 114 } 115 return NULL; 116 } 117 118 static int 119 sdhc_acpi_match(device_t parent, cfdata_t match, void *opaque) 120 { 121 struct acpi_attach_args *aa = opaque; 122 123 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 124 return 0; 125 126 return sdhc_acpi_find_slot(aa->aa_node->ad_devinfo) != NULL; 127 } 128 129 static void 130 sdhc_acpi_attach(device_t parent, device_t self, void *opaque) 131 { 132 struct sdhc_acpi_softc *sc = device_private(self); 133 struct acpi_attach_args *aa = opaque; 134 const struct sdhc_acpi_slot *slot; 135 struct acpi_resources res; 136 struct acpi_mem *mem; 137 struct acpi_irq *irq; 138 ACPI_STATUS rv; 139 ACPI_INTEGER clock_freq; 140 141 sc->sc.sc_dev = self; 142 sc->sc.sc_dmat = aa->aa_dmat; 143 sc->sc.sc_host = NULL; 144 sc->sc_memt = aa->aa_memt; 145 146 slot = sdhc_acpi_find_slot(aa->aa_node->ad_devinfo); 147 if (slot->type == SLOT_TYPE_EMMC) 148 sc->sc.sc_vendor_hw_reset = sdhc_acpi_intel_emmc_hw_reset; 149 150 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 151 &res, &acpi_resource_parse_ops_default); 152 if (ACPI_FAILURE(rv)) 153 return; 154 155 AcpiGetHandle(aa->aa_node->ad_handle, "_CRS", &sc->sc_crs); 156 AcpiGetHandle(aa->aa_node->ad_handle, "_SRS", &sc->sc_srs); 157 if (sc->sc_crs && sc->sc_srs) { 158 /* XXX Why need this? */ 159 sc->sc_crs_buffer.Pointer = NULL; 160 sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 161 rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer); 162 if (ACPI_FAILURE(rv)) 163 sc->sc_crs = sc->sc_srs = NULL; 164 } 165 166 mem = acpi_res_mem(&res, 0); 167 irq = acpi_res_irq(&res, 0); 168 if (mem == NULL || irq == NULL) { 169 aprint_error_dev(self, "incomplete resources\n"); 170 goto cleanup; 171 } 172 if (mem->ar_length == 0) { 173 aprint_error_dev(self, "zero length memory resource\n"); 174 goto cleanup; 175 } 176 sc->sc_memsize = mem->ar_length; 177 178 if (bus_space_map(sc->sc_memt, mem->ar_base, sc->sc_memsize, 0, 179 &sc->sc_memh)) { 180 aprint_error_dev(self, "couldn't map registers\n"); 181 goto cleanup; 182 } 183 184 sc->sc_ih = acpi_intr_establish(self, 185 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 186 IPL_BIO, false, sdhc_intr, &sc->sc, device_xname(self)); 187 if (sc->sc_ih == NULL) { 188 aprint_error_dev(self, 189 "couldn't establish interrupt handler\n"); 190 goto unmap; 191 } 192 193 sc->sc.sc_host = kmem_zalloc(sizeof(struct sdhc_host *), KM_SLEEP); 194 195 /* Enable DMA transfer */ 196 sc->sc.sc_flags |= SDHC_FLAG_USE_DMA; 197 198 /* Read clock frequency from device properties */ 199 rv = acpi_dsd_integer(aa->aa_node->ad_handle, "clock-frequency", 200 &clock_freq); 201 if (ACPI_SUCCESS(rv)) 202 sc->sc.sc_clkbase = clock_freq / 1000; 203 204 if (sdhc_host_found(&sc->sc, sc->sc_memt, sc->sc_memh, 205 sc->sc_memsize) != 0) { 206 aprint_error_dev(self, "couldn't initialize host\n"); 207 goto fail; 208 } 209 210 if (!pmf_device_register1(self, sdhc_suspend, sdhc_acpi_resume, 211 sdhc_shutdown)) { 212 aprint_error_dev(self, "couldn't establish powerhook\n"); 213 } 214 215 acpi_resource_cleanup(&res); 216 return; 217 218 fail: 219 if (sc->sc.sc_host != NULL) 220 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 221 sc->sc.sc_host = NULL; 222 if (sc->sc_ih != NULL) 223 acpi_intr_disestablish(sc->sc_ih); 224 sc->sc_ih = NULL; 225 unmap: 226 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); 227 sc->sc_memsize = 0; 228 cleanup: 229 if (sc->sc_crs_buffer.Pointer) 230 ACPI_FREE(sc->sc_crs_buffer.Pointer); 231 sc->sc_crs_buffer.Pointer = NULL; 232 acpi_resource_cleanup(&res); 233 } 234 235 static int 236 sdhc_acpi_detach(device_t self, int flags) 237 { 238 struct sdhc_acpi_softc *sc = device_private(self); 239 int rv; 240 241 pmf_device_deregister(self); 242 243 rv = sdhc_detach(&sc->sc, flags); 244 if (rv) 245 return rv; 246 247 if (sc->sc_ih != NULL) 248 acpi_intr_disestablish(sc->sc_ih); 249 250 if (sc->sc.sc_host != NULL) 251 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 252 253 if (sc->sc_memsize > 0) 254 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); 255 256 if (sc->sc_crs_buffer.Pointer) 257 ACPI_FREE(sc->sc_crs_buffer.Pointer); 258 259 return 0; 260 } 261 262 static bool 263 sdhc_acpi_resume(device_t self, const pmf_qual_t *qual) 264 { 265 struct sdhc_acpi_softc *sc = device_private(self); 266 ACPI_STATUS rv; 267 268 if (sc->sc_crs && sc->sc_srs) { 269 rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer); 270 if (ACPI_FAILURE(rv)) 271 printf("%s: _SRS failed: %s\n", 272 device_xname(self), AcpiFormatException(rv)); 273 } 274 275 return sdhc_resume(self, qual); 276 } 277 278 static void 279 sdhc_acpi_intel_emmc_hw_reset(struct sdhc_softc *sc, struct sdhc_host *hp) 280 { 281 kmutex_t *plock = sdhc_host_lock(hp); 282 uint8_t reg; 283 284 mutex_enter(plock); 285 286 reg = sdhc_host_read_1(hp, SDHC_POWER_CTL); 287 reg |= 0x10; 288 sdhc_host_write_1(hp, SDHC_POWER_CTL, reg); 289 290 sdmmc_delay(10); 291 292 reg &= ~0x10; 293 sdhc_host_write_1(hp, SDHC_POWER_CTL, reg); 294 295 sdmmc_delay(1000); 296 297 mutex_exit(plock); 298 } 299
Indexes created Tue Sep 30 20:09:53 GMT 2025