sdhc_acpi.c revision 1.2.2.2
1 /* $NetBSD: sdhc_acpi.c,v 1.2.2.2 2016/07/09 20:25:01 skrll 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 1.2.2.2 2016/07/09 20:25:01 skrll 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 39 #include <dev/sdmmc/sdhcreg.h> 40 #include <dev/sdmmc/sdhcvar.h> 41 #include <dev/sdmmc/sdmmcvar.h> 42 43 #define _COMPONENT ACPI_RESOURCE_COMPONENT 44 ACPI_MODULE_NAME ("sdhc_acpi") 45 46 static int sdhc_acpi_match(device_t, cfdata_t, void *); 47 static void sdhc_acpi_attach(device_t, device_t, void *); 48 static int sdhc_acpi_detach(device_t, int); 49 static bool sdhc_acpi_resume(device_t, const pmf_qual_t *); 50 51 struct sdhc_acpi_softc { 52 struct sdhc_softc sc; 53 int sc_irq; 54 55 ACPI_HANDLE sc_crs, sc_srs; 56 ACPI_BUFFER sc_crs_buffer; 57 }; 58 59 CFATTACH_DECL_NEW(sdhc_acpi, sizeof(struct sdhc_acpi_softc), 60 sdhc_acpi_match, sdhc_acpi_attach, sdhc_acpi_detach, NULL); 61 62 static uint32_t sdhc_acpi_intr(void *); 63 64 static const char * const sdhc_acpi_ids[] = { 65 "80860F14", 66 "80860F16", 67 NULL 68 }; 69 70 static int 71 sdhc_acpi_match(device_t parent, cfdata_t match, void *opaque) 72 { 73 struct acpi_attach_args *aa = opaque; 74 75 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 76 return 0; 77 78 return acpi_match_hid(aa->aa_node->ad_devinfo, sdhc_acpi_ids); 79 } 80 81 static void 82 sdhc_acpi_attach(device_t parent, device_t self, void *opaque) 83 { 84 struct sdhc_acpi_softc *sc = device_private(self); 85 struct acpi_attach_args *aa = opaque; 86 struct acpi_resources res; 87 struct acpi_mem *mem; 88 struct acpi_irq *irq; 89 bus_space_handle_t memh; 90 ACPI_STATUS rv; 91 92 sc->sc.sc_dev = self; 93 sc->sc.sc_dmat = aa->aa_dmat; 94 sc->sc.sc_host = NULL; 95 sc->sc_irq = -1; 96 97 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 98 &res, &acpi_resource_parse_ops_default); 99 if (ACPI_FAILURE(rv)) 100 return; 101 102 AcpiGetHandle(aa->aa_node->ad_handle, "_CRS", &sc->sc_crs); 103 AcpiGetHandle(aa->aa_node->ad_handle, "_SRS", &sc->sc_srs); 104 if (sc->sc_crs && sc->sc_srs) { 105 /* XXX Why need this? */ 106 sc->sc_crs_buffer.Pointer = NULL; 107 sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 108 rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer); 109 if (ACPI_FAILURE(rv)) 110 sc->sc_crs = sc->sc_srs = NULL; 111 } 112 113 mem = acpi_res_mem(&res, 0); 114 irq = acpi_res_irq(&res, 0); 115 if (mem == NULL || irq == NULL) { 116 aprint_error_dev(self, "incomplete resources\n"); 117 goto cleanup; 118 } 119 120 if (bus_space_map(aa->aa_memt, mem->ar_base, mem->ar_length, 0, 121 &memh)) { 122 aprint_error_dev(self, "couldn't map registers\n"); 123 goto cleanup; 124 } 125 126 /* XXX acpi_intr_establish? */ 127 rv = AcpiOsInstallInterruptHandler(irq->ar_irq, sdhc_acpi_intr, sc); 128 if (ACPI_FAILURE(rv)) { 129 aprint_error_dev(self, 130 "couldn't establish interrupt handler\n"); 131 goto cleanup; 132 } 133 sc->sc_irq = irq->ar_irq; 134 135 sc->sc.sc_host = kmem_zalloc(sizeof(struct sdhc_host *), KM_NOSLEEP); 136 if (sc->sc.sc_host == NULL) { 137 aprint_error_dev(self, "couldn't alloc memory\n"); 138 goto cleanup; 139 } 140 141 if (sdhc_host_found(&sc->sc, aa->aa_memt, memh, mem->ar_length) != 0) { 142 aprint_error_dev(self, "couldn't initialize host\n"); 143 goto cleanup; 144 } 145 146 if (!pmf_device_register1(self, sdhc_suspend, sdhc_acpi_resume, 147 sdhc_shutdown)) { 148 aprint_error_dev(self, "couldn't establish powerhook\n"); 149 } 150 151 acpi_resource_cleanup(&res); 152 return; 153 154 cleanup: 155 acpi_resource_cleanup(&res); 156 if (sc->sc_crs_buffer.Pointer) 157 ACPI_FREE(sc->sc_crs_buffer.Pointer); 158 if (sc->sc_irq >= 0) 159 /* XXX acpi_intr_disestablish? */ 160 AcpiOsRemoveInterruptHandler(sc->sc_irq, sdhc_acpi_intr); 161 if (sc->sc.sc_host != NULL) 162 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 163 } 164 165 static int 166 sdhc_acpi_detach(device_t self, int flags) 167 { 168 struct sdhc_acpi_softc *sc = device_private(self); 169 int rv; 170 171 pmf_device_deregister(self); 172 173 if (sc->sc_crs_buffer.Pointer) 174 ACPI_FREE(sc->sc_crs_buffer.Pointer); 175 176 rv = sdhc_detach(&sc->sc, flags); 177 if (rv) 178 return rv; 179 180 if (sc->sc_irq >= 0) 181 /* XXX acpi_intr_disestablish? */ 182 AcpiOsRemoveInterruptHandler(sc->sc_irq, sdhc_acpi_intr); 183 184 if (sc->sc.sc_host != NULL) 185 kmem_free(sc->sc.sc_host, sizeof(struct sdhc_host *)); 186 187 return 0; 188 } 189 190 static bool 191 sdhc_acpi_resume(device_t self, const pmf_qual_t *qual) 192 { 193 struct sdhc_acpi_softc *sc = device_private(self); 194 ACPI_STATUS rv; 195 196 if (sc->sc_crs && sc->sc_srs) { 197 rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer); 198 if (ACPI_FAILURE(rv)) 199 printf("%s: _SRS failed: %s\n", 200 device_xname(self), AcpiFormatException(rv)); 201 } 202 203 return sdhc_resume(self, qual); 204 } 205 206 static uint32_t 207 sdhc_acpi_intr(void *context) 208 { 209 struct sdhc_acpi_softc *sc = context; 210 211 if (!sdhc_intr(&sc->sc)) 212 return ACPI_INTERRUPT_NOT_HANDLED; 213 return ACPI_INTERRUPT_HANDLED; 214 } 215
Indexes created Wed Oct 15 16:09:53 GMT 2025