sdhc_acpi.c revision 1.15
1 /* $NetBSD: sdhc_acpi.c,v 1.15 2021/12/28 13:41:12 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 1.15 2021/12/28 13:41:12 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 /* Freescale ESDHC */ 45 #define SDHC_ESDHC_FLAGS \ 46 (SDHC_FLAG_HAVE_DVS|SDHC_FLAG_NO_PWR0|SDHC_FLAG_32BIT_ACCESS|SDHC_FLAG_ENHANCED) 47 48 #define _COMPONENT ACPI_RESOURCE_COMPONENT 49 ACPI_MODULE_NAME ("sdhc_acpi") 50 51 static int sdhc_acpi_match(device_t, cfdata_t, void *); 52 static void sdhc_acpi_attach(device_t, device_t, void *); 53 static int sdhc_acpi_detach(device_t, int); 54 static bool sdhc_acpi_resume(device_t, const pmf_qual_t *); 55 56 struct sdhc_acpi_softc { 57 struct sdhc_softc sc; 58 bus_space_tag_t sc_memt; 59 bus_space_handle_t sc_memh; 60 bus_size_t sc_memsize; 61 void *sc_ih; 62 63 ACPI_HANDLE sc_crs, sc_srs; 64 ACPI_BUFFER sc_crs_buffer; 65 }; 66 67 CFATTACH_DECL_NEW(sdhc_acpi, sizeof(struct sdhc_acpi_softc), 68 sdhc_acpi_match, sdhc_acpi_attach, sdhc_acpi_detach, NULL); 69 70 static void sdhc_acpi_intel_emmc_hw_reset(struct sdhc_softc *, 71 struct sdhc_host *); 72 73 static const struct sdhc_acpi_slot { 74 const char *hid; 75 const char *uid; 76 int type; 77 #define SLOT_TYPE_SD 0 /* SD or SDIO */ 78 #define SLOT_TYPE_EMMC 1 /* eMMC */ 79 uint32_t flags; 80 } sdhc_acpi_slot_map[] = { 81 { .hid = "80865ACA", .type = SLOT_TYPE_SD }, 82 { .hid = "80865ACC", .type = SLOT_TYPE_EMMC }, 83 { .hid = "80865AD0", .type = SLOT_TYPE_SD }, 84 { .hid = "80860F14", .uid = "1", .type = SLOT_TYPE_EMMC }, 85 { .hid = "80860F14", .uid = "3", .type = SLOT_TYPE_SD }, 86 { .hid = "80860F16", .type = SLOT_TYPE_SD }, 87 { .hid = "INT33BB", .uid = "2", .type = SLOT_TYPE_SD }, 88 { .hid = "INT33BB", .uid = "3", .type = SLOT_TYPE_SD }, 89 { .hid = "INT33C6", .type = SLOT_TYPE_SD }, 90 { .hid = "INT3436", .type = SLOT_TYPE_SD }, 91 { .hid = "INT344D", .type = SLOT_TYPE_SD }, 92 { .hid = "NXP0003", .uid = "0", .type = SLOT_TYPE_SD, 93 .flags = SDHC_ESDHC_FLAGS }, 94 { .hid = "NXP0003", .uid = "1", .type = SLOT_TYPE_EMMC, 95 .flags = SDHC_ESDHC_FLAGS }, 96 97 /* Generic IDs last */ 98 { .hid = "PNP0D40", .type = SLOT_TYPE_SD }, 99 { .hid = "PNP0FFF", .uid = "3", .type = SLOT_TYPE_SD }, 100 }; 101 102 static const struct sdhc_acpi_slot * 103 sdhc_acpi_find_slot(ACPI_DEVICE_INFO *ad) 104 { 105 const struct sdhc_acpi_slot *slot; 106 const char *hid, *uid; 107 size_t i; 108 109 hid = ad->HardwareId.String; 110 uid = ad->UniqueId.String; 111 112 if (!(ad->Valid & ACPI_VALID_HID) || hid == NULL) 113 return NULL; 114 115 for (i = 0; i < __arraycount(sdhc_acpi_slot_map); i++) { 116 slot = &sdhc_acpi_slot_map[i]; 117 const char * const slot_id[] = { slot->hid, NULL }; 118 if (acpi_match_hid(ad, slot_id)) { 119 if (slot->uid == NULL || 120 ((ad->Valid & ACPI_VALID_UID) != 0 && 121 uid != NULL && 122 strcmp(uid, slot->uid) == 0)) 123 return slot; 124 } 125 } 126 return NULL; 127 } 128 129 static int 130 sdhc_acpi_match(device_t parent, cfdata_t match, void *opaque) 131 { 132 struct acpi_attach_args *aa = opaque; 133 134 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 135 return 0; 136 137 return sdhc_acpi_find_slot(aa->aa_node->ad_devinfo) != NULL; 138 } 139 140 static void 141 sdhc_acpi_attach(device_t parent, device_t self, void *opaque) 142 { 143 struct sdhc_acpi_softc *sc = device_private(self); 144 struct acpi_attach_args *aa = opaque; 145 const struct sdhc_acpi_slot *slot; 146 struct acpi_resources res; 147 struct acpi_mem *mem; 148 struct acpi_irq *irq; 149 ACPI_STATUS rv; 150 ACPI_INTEGER clock_freq; 151 152 sc->sc.sc_dev = self; 153 sc->sc.sc_dmat = aa->aa_dmat; 154 sc->sc.sc_host = NULL; 155 sc->sc_memt = aa->aa_memt; 156 157 slot = sdhc_acpi_find_slot(aa->aa_node->ad_devinfo); 158 if (slot->type == SLOT_TYPE_EMMC) 159 sc->sc.sc_vendor_hw_reset = sdhc_acpi_intel_emmc_hw_reset; 160 161 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 162 &res, &acpi_resource_parse_ops_default); 163 if (ACPI_FAILURE(rv)) 164 return; 165 166 AcpiGetHandle(aa->aa_node->ad_handle, "_CRS", &sc->sc_crs); 167 AcpiGetHandle(aa->aa_node->ad_handle, "_SRS", &sc->sc_srs); 168 if (sc->sc_crs && sc->sc_srs) { 169 /* XXX Why need this? */ 170 sc->sc_crs_buffer.Pointer = NULL; 171 sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 172 rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer); 173 if (ACPI_FAILURE(rv)) 174 sc->sc_crs = sc->sc_srs = NULL; 175 } 176 177 mem = acpi_res_mem(&res, 0); 178 irq = acpi_res_irq(&res, 0); 179 if (mem == NULL || irq == NULL) { 180 aprint_error_dev(self, "incomplete resources\n"); 181 goto cleanup; 182 } 183 if (mem->ar_length == 0) { 184 aprint_error_dev(self, "zero length memory resource\n"); 185 goto cleanup; 186 } 187 sc->sc_memsize = mem->ar_length; 188 189 if (bus_space_map(sc->sc_memt, mem->ar_base, sc->sc_memsize, 0, 190 &sc->sc_memh)) { 191 aprint_error_dev(self, "couldn't map registers\n"); 192 goto cleanup; 193 } 194 195 sc->sc_ih = acpi_intr_establish(self, 196 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 197 IPL_BIO, false, sdhc_intr, &sc->sc, device_xname(self)); 198 if (sc->sc_ih == NULL) { 199 aprint_error_dev(self, 200 "couldn't establish interrupt handler\n"); 201 goto unmap; 202 } 203 204 sc->sc.sc_host = kmem_zalloc(sizeof(struct sdhc_host *), KM_SLEEP); 205 206 sc->sc.sc_flags |= slot->flags; 207 208 /* Enable DMA transfer */ 209 sc->sc.sc_flags |= SDHC_FLAG_USE_DMA; 210 211 /* Read clock frequency from device properties */ 212 rv = acpi_dsd_integer(aa->aa_node->ad_handle, "clock-frequency", 213 &clock_freq); 214 if (ACPI_SUCCESS(rv)) { 215 sc->sc.sc_clkbase = clock_freq / 1000; 216 sc->sc.sc_flags |= SDHC_FLAG_NO_CLKBASE; 217 } 218 219 if (sdhc_host_found(&sc->sc, sc->sc_memt, sc->sc_memh, 220 sc->sc_memsize) != 0) { 221 aprint_error_dev(self, "couldn't initialize host\n"); 222 goto fail; 223 } 224 225 if (!pmf_device_register1(self, sdhc_suspend, sdhc_acpi_resume, 226 sdhc_shutdown)) { 227 aprint_error_dev(self, "couldn't establish powerhook\n"); 228 } 229 230 acpi_resource_cleanup(&res); 231 return; 232 233 fail: 234 if (sc->sc.sc_host != NULL) 235 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 236 sc->sc.sc_host = NULL; 237 if (sc->sc_ih != NULL) 238 acpi_intr_disestablish(sc->sc_ih); 239 sc->sc_ih = NULL; 240 unmap: 241 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); 242 sc->sc_memsize = 0; 243 cleanup: 244 if (sc->sc_crs_buffer.Pointer) 245 ACPI_FREE(sc->sc_crs_buffer.Pointer); 246 sc->sc_crs_buffer.Pointer = NULL; 247 acpi_resource_cleanup(&res); 248 } 249 250 static int 251 sdhc_acpi_detach(device_t self, int flags) 252 { 253 struct sdhc_acpi_softc *sc = device_private(self); 254 int rv; 255 256 pmf_device_deregister(self); 257 258 rv = sdhc_detach(&sc->sc, flags); 259 if (rv) 260 return rv; 261 262 if (sc->sc_ih != NULL) 263 acpi_intr_disestablish(sc->sc_ih); 264 265 if (sc->sc.sc_host != NULL) 266 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 267 268 if (sc->sc_memsize > 0) 269 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); 270 271 if (sc->sc_crs_buffer.Pointer) 272 ACPI_FREE(sc->sc_crs_buffer.Pointer); 273 274 return 0; 275 } 276 277 static bool 278 sdhc_acpi_resume(device_t self, const pmf_qual_t *qual) 279 { 280 struct sdhc_acpi_softc *sc = device_private(self); 281 ACPI_STATUS rv; 282 283 if (sc->sc_crs && sc->sc_srs) { 284 rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer); 285 if (ACPI_FAILURE(rv)) 286 printf("%s: _SRS failed: %s\n", 287 device_xname(self), AcpiFormatException(rv)); 288 } 289 290 return sdhc_resume(self, qual); 291 } 292 293 static void 294 sdhc_acpi_intel_emmc_hw_reset(struct sdhc_softc *sc, struct sdhc_host *hp) 295 { 296 kmutex_t *plock = sdhc_host_lock(hp); 297 uint8_t reg; 298 299 mutex_enter(plock); 300 301 reg = sdhc_host_read_1(hp, SDHC_POWER_CTL); 302 reg |= 0x10; 303 sdhc_host_write_1(hp, SDHC_POWER_CTL, reg); 304 305 sdmmc_delay(10); 306 307 reg &= ~0x10; 308 sdhc_host_write_1(hp, SDHC_POWER_CTL, reg); 309 310 sdmmc_delay(1000); 311 312 mutex_exit(plock); 313 } 314
Indexes created Tue Sep 30 20:09:53 GMT 2025