wb_acpi.c revision 1.7
1 /* $NetBSD: wb_acpi.c,v 1.7 2020/12/07 10:02:51 jmcneill Exp $ */ 2 3 /* 4 * Copyright (c) 2009 Jared D. McNeill <jmcneill (at) invisible.ca> 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: wb_acpi.c,v 1.7 2020/12/07 10:02:51 jmcneill Exp $"); 30 31 #include <sys/param.h> 32 #include <sys/device.h> 33 #include <sys/systm.h> 34 35 #include <dev/acpi/acpireg.h> 36 #include <dev/acpi/acpivar.h> 37 #include <dev/acpi/acpi_intr.h> 38 39 #include <dev/ic/w83l518dvar.h> 40 #include <dev/ic/w83l518dreg.h> 41 42 #include <dev/isa/isadmavar.h> 43 44 #include <dev/sdmmc/sdmmcvar.h> 45 46 #define _COMPONENT ACPI_RESOURCE_COMPONENT 47 ACPI_MODULE_NAME ("wb_acpi") 48 49 static int wb_acpi_match(device_t, cfdata_t, void *); 50 static void wb_acpi_attach(device_t, device_t, void *); 51 static int wb_acpi_detach(device_t, int); 52 static bool wb_acpi_suspend(device_t, const pmf_qual_t *); 53 static bool wb_acpi_resume(device_t, const pmf_qual_t *); 54 55 struct wb_acpi_softc { 56 struct wb_softc sc_wb; 57 isa_chipset_tag_t sc_ic; 58 void *sc_ih; 59 int sc_ioh_length; 60 61 ACPI_HANDLE sc_crs, sc_srs; 62 ACPI_BUFFER sc_crs_buffer; 63 }; 64 65 CFATTACH_DECL_NEW(wb_acpi, sizeof(struct wb_acpi_softc), 66 wb_acpi_match, 67 wb_acpi_attach, 68 wb_acpi_detach, 69 NULL 70 ); 71 72 static const char * const wb_acpi_ids[] = { 73 #if notyet 74 "WEC0515", /* Memory Stick interface */ 75 #endif 76 "WEC0517", /* SD Memory Card interface */ 77 NULL 78 }; 79 80 static int 81 wb_acpi_match(device_t parent, cfdata_t match, void *opaque) 82 { 83 struct acpi_attach_args *aa = opaque; 84 85 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 86 return 0; 87 88 return acpi_match_hid(aa->aa_node->ad_devinfo, wb_acpi_ids); 89 } 90 91 static void 92 wb_acpi_attach(device_t parent, device_t self, void *opaque) 93 { 94 struct wb_acpi_softc *sc = device_private(self); 95 struct acpi_attach_args *aa = opaque; 96 struct acpi_resources res; 97 struct acpi_io *io; 98 struct acpi_irq *irq; 99 bus_space_handle_t ioh; 100 ACPI_STATUS rv; 101 102 sc->sc_ic = aa->aa_ic; 103 104 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 105 &res, &acpi_resource_parse_ops_default); 106 if (ACPI_FAILURE(rv)) 107 return; 108 109 AcpiGetHandle(aa->aa_node->ad_handle, "_CRS", &sc->sc_crs); 110 AcpiGetHandle(aa->aa_node->ad_handle, "_SRS", &sc->sc_srs); 111 if (sc->sc_crs && sc->sc_srs) { 112 sc->sc_crs_buffer.Pointer = NULL; 113 sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 114 rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer); 115 if (ACPI_FAILURE(rv)) 116 sc->sc_crs = sc->sc_srs = NULL; 117 } 118 119 io = acpi_res_io(&res, 0); 120 irq = acpi_res_irq(&res, 0); 121 if (io == NULL || irq == NULL) { 122 aprint_error_dev(self, "incomplete resources\n"); 123 goto cleanup; 124 } 125 126 if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0, &ioh)) { 127 aprint_error_dev(self, "couldn't map registers\n"); 128 goto cleanup; 129 } 130 sc->sc_ioh_length = io->ar_length; 131 132 sc->sc_ih = acpi_intr_establish(self, 133 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 134 IPL_SDMMC, false, wb_intr, &sc->sc_wb, device_xname(self)); 135 if (sc->sc_ih == NULL) { 136 aprint_error_dev(self, 137 "couldn't establish interrupt handler\n"); 138 goto cleanup; 139 } 140 141 sc->sc_wb.wb_dev = self; 142 sc->sc_wb.wb_type = WB_DEVNO_SD; 143 sc->sc_wb.wb_iot = aa->aa_iot; 144 sc->sc_wb.wb_ioh = ioh; 145 sc->sc_wb.wb_irq = irq->ar_irq; 146 sc->sc_wb.wb_base = io->ar_base; 147 wb_attach(&sc->sc_wb); 148 149 pmf_device_register(self, wb_acpi_suspend, wb_acpi_resume); 150 151 cleanup: 152 acpi_resource_cleanup(&res); 153 } 154 155 static int 156 wb_acpi_detach(device_t self, int flags) 157 { 158 struct wb_acpi_softc *sc = device_private(self); 159 int rv; 160 161 pmf_device_deregister(self); 162 163 if (sc->sc_crs_buffer.Pointer) 164 ACPI_FREE(sc->sc_crs_buffer.Pointer); 165 166 rv = wb_detach(&sc->sc_wb, flags); 167 if (rv) 168 return rv; 169 170 if (sc->sc_ih) 171 acpi_intr_disestablish(sc->sc_ih); 172 173 if (sc->sc_ioh_length > 0) 174 bus_space_unmap(sc->sc_wb.wb_iot, sc->sc_wb.wb_ioh, 175 sc->sc_ioh_length); 176 177 return 0; 178 } 179 180 static bool 181 wb_acpi_suspend(device_t self, const pmf_qual_t *qual) 182 { 183 struct wb_acpi_softc *sc = device_private(self); 184 185 return wb_suspend(&sc->sc_wb); 186 } 187 188 static bool 189 wb_acpi_resume(device_t self, const pmf_qual_t *qual) 190 { 191 struct wb_acpi_softc *sc = device_private(self); 192 ACPI_STATUS rv; 193 194 if (sc->sc_crs && sc->sc_srs) { 195 rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer); 196 if (ACPI_FAILURE(rv)) 197 printf("%s: _SRS failed: %s\n", 198 device_xname(self), AcpiFormatException(rv)); 199 } 200 201 return wb_resume(&sc->sc_wb); 202 } 203
Indexes created Sun Nov 02 23:10:09 GMT 2025