sdhc_acpi.c revision 1.7
1 /* $NetBSD: sdhc_acpi.c,v 1.7 2018/11/17 07:06:25 kre 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 1.7 2018/11/17 07:06:25 kre 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 if (strcmp(hid, slot->hid) == 0) { 107 if (slot->uid == NULL || 108 ((ad->Valid & ACPI_VALID_UID) != 0 && 109 uid != NULL && 110 strcmp(uid, slot->uid) == 0)) 111 return slot; 112 } 113 } 114 return NULL; 115 } 116 117 static int 118 sdhc_acpi_match(device_t parent, cfdata_t match, void *opaque) 119 { 120 struct acpi_attach_args *aa = opaque; 121 122 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 123 return 0; 124 125 return sdhc_acpi_find_slot(aa->aa_node->ad_devinfo) != NULL; 126 } 127 128 static void 129 sdhc_acpi_attach(device_t parent, device_t self, void *opaque) 130 { 131 struct sdhc_acpi_softc *sc = device_private(self); 132 struct acpi_attach_args *aa = opaque; 133 const struct sdhc_acpi_slot *slot; 134 struct acpi_resources res; 135 struct acpi_mem *mem; 136 struct acpi_irq *irq; 137 ACPI_STATUS rv; 138 139 sc->sc.sc_dev = self; 140 sc->sc.sc_dmat = aa->aa_dmat; 141 sc->sc.sc_host = NULL; 142 sc->sc_memt = aa->aa_memt; 143 144 slot = sdhc_acpi_find_slot(aa->aa_node->ad_devinfo); 145 if (slot->type == SLOT_TYPE_EMMC) 146 sc->sc.sc_vendor_hw_reset = sdhc_acpi_intel_emmc_hw_reset; 147 148 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 149 &res, &acpi_resource_parse_ops_default); 150 if (ACPI_FAILURE(rv)) 151 return; 152 153 AcpiGetHandle(aa->aa_node->ad_handle, "_CRS", &sc->sc_crs); 154 AcpiGetHandle(aa->aa_node->ad_handle, "_SRS", &sc->sc_srs); 155 if (sc->sc_crs && sc->sc_srs) { 156 /* XXX Why need this? */ 157 sc->sc_crs_buffer.Pointer = NULL; 158 sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 159 rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer); 160 if (ACPI_FAILURE(rv)) 161 sc->sc_crs = sc->sc_srs = NULL; 162 } 163 164 mem = acpi_res_mem(&res, 0); 165 irq = acpi_res_irq(&res, 0); 166 if (mem == NULL || irq == NULL) { 167 aprint_error_dev(self, "incomplete resources\n"); 168 goto cleanup; 169 } 170 if (mem->ar_length == 0) { 171 aprint_error_dev(self, "zero length memory resource\n"); 172 goto cleanup; 173 } 174 sc->sc_memsize = mem->ar_length; 175 176 if (bus_space_map(sc->sc_memt, mem->ar_base, sc->sc_memsize, 0, 177 &sc->sc_memh)) { 178 aprint_error_dev(self, "couldn't map registers\n"); 179 goto cleanup; 180 } 181 182 sc->sc_ih = acpi_intr_establish(self, 183 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 184 IPL_BIO, false, sdhc_intr, &sc->sc, device_xname(self)); 185 if (sc->sc_ih == NULL) { 186 aprint_error_dev(self, 187 "couldn't establish interrupt handler\n"); 188 goto unmap; 189 } 190 191 sc->sc.sc_host = kmem_zalloc(sizeof(struct sdhc_host *), KM_NOSLEEP); 192 if (sc->sc.sc_host == NULL) { 193 aprint_error_dev(self, "couldn't alloc memory\n"); 194 goto intr_disestablish; 195 } 196 197 /* Enable DMA transfer */ 198 sc->sc.sc_flags |= SDHC_FLAG_USE_DMA; 199 200 if (sdhc_host_found(&sc->sc, sc->sc_memt, sc->sc_memh, 201 sc->sc_memsize) != 0) { 202 aprint_error_dev(self, "couldn't initialize host\n"); 203 goto fail; 204 } 205 206 if (!pmf_device_register1(self, sdhc_suspend, sdhc_acpi_resume, 207 sdhc_shutdown)) { 208 aprint_error_dev(self, "couldn't establish powerhook\n"); 209 } 210 211 acpi_resource_cleanup(&res); 212 return; 213 214 fail: 215 if (sc->sc.sc_host != NULL) 216 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 217 sc->sc.sc_host = NULL; 218 intr_disestablish: 219 if (sc->sc_ih != NULL) 220 acpi_intr_disestablish(sc->sc_ih); 221 sc->sc_ih = NULL; 222 unmap: 223 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); 224 sc->sc_memsize = 0; 225 cleanup: 226 if (sc->sc_crs_buffer.Pointer) 227 ACPI_FREE(sc->sc_crs_buffer.Pointer); 228 sc->sc_crs_buffer.Pointer = NULL; 229 acpi_resource_cleanup(&res); 230 } 231 232 static int 233 sdhc_acpi_detach(device_t self, int flags) 234 { 235 struct sdhc_acpi_softc *sc = device_private(self); 236 int rv; 237 238 pmf_device_deregister(self); 239 240 rv = sdhc_detach(&sc->sc, flags); 241 if (rv) 242 return rv; 243 244 if (sc->sc_ih != NULL) 245 acpi_intr_disestablish(sc->sc_ih); 246 247 if (sc->sc.sc_host != NULL) 248 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 249 250 if (sc->sc_memsize > 0) 251 bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); 252 253 if (sc->sc_crs_buffer.Pointer) 254 ACPI_FREE(sc->sc_crs_buffer.Pointer); 255 256 return 0; 257 } 258 259 static bool 260 sdhc_acpi_resume(device_t self, const pmf_qual_t *qual) 261 { 262 struct sdhc_acpi_softc *sc = device_private(self); 263 ACPI_STATUS rv; 264 265 if (sc->sc_crs && sc->sc_srs) { 266 rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer); 267 if (ACPI_FAILURE(rv)) 268 printf("%s: _SRS failed: %s\n", 269 device_xname(self), AcpiFormatException(rv)); 270 } 271 272 return sdhc_resume(self, qual); 273 } 274 275 static void 276 sdhc_acpi_intel_emmc_hw_reset(struct sdhc_softc *sc, struct sdhc_host *hp) 277 { 278 kmutex_t *plock = sdhc_host_lock(hp); 279 uint8_t reg; 280 281 mutex_enter(plock); 282 283 reg = sdhc_host_read_1(hp, SDHC_POWER_CTL); 284 reg |= 0x10; 285 sdhc_host_write_1(hp, SDHC_POWER_CTL, reg); 286 287 sdmmc_delay(10); 288 289 reg &= ~0x10; 290 sdhc_host_write_1(hp, SDHC_POWER_CTL, reg); 291 292 sdmmc_delay(1000); 293 294 mutex_exit(plock); 295 } 296
Indexes created Tue Sep 30 20:09:53 GMT 2025