1 /* $NetBSD: dwcmmc_acpi.c,v 1.3 2024/02/09 16:53:15 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2022 Jared 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. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: dwcmmc_acpi.c,v 1.3 2024/02/09 16:53:15 skrll Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/cpu.h> 35 #include <sys/device.h> 36 37 #include <dev/ic/dwc_mmc_var.h> 38 #include <dev/ic/dwc_mmc_reg.h> 39 #include <dev/sdmmc/sdmmcchip.h> 40 41 #include <dev/acpi/acpireg.h> 42 #include <dev/acpi/acpivar.h> 43 #include <dev/acpi/acpi_intr.h> 44 45 /* 46 * FIXME: Remove separate compat_data arrays once acpi_compatible_lookup 47 * grows support for DT link devices. 48 */ 49 static const struct device_compatible_entry rockchip_compat_data[] = { 50 { .compat = "rockchip,rk3288-dw-mshc" }, 51 DEVICE_COMPAT_EOL 52 }; 53 static const struct device_compatible_entry compat_data[] = { 54 { .compat = "snps,dw-mshc" }, 55 DEVICE_COMPAT_EOL 56 }; 57 58 static int dwcmmc_acpi_match(device_t, cfdata_t, void *); 59 static void dwcmmc_acpi_attach(device_t, device_t, void *); 60 61 static int dwcmmc_acpi_init_props(struct dwc_mmc_softc *, ACPI_HANDLE); 62 63 CFATTACH_DECL_NEW(dwcmmc_acpi, sizeof(struct dwc_mmc_softc), 64 dwcmmc_acpi_match, dwcmmc_acpi_attach, NULL, NULL); 65 66 static int 67 dwcmmc_acpi_match(device_t parent, cfdata_t cf, void *aux) 68 { 69 struct acpi_attach_args *aa = aux; 70 int match; 71 72 match = acpi_compatible_match(aa, rockchip_compat_data); 73 if (!match) { 74 match = acpi_compatible_match(aa, compat_data); 75 } 76 77 return match; 78 } 79 80 static void 81 dwcmmc_acpi_attach(device_t parent, device_t self, void *aux) 82 { 83 struct dwc_mmc_softc * const sc = device_private(self); 84 struct acpi_attach_args *aa = aux; 85 ACPI_HANDLE handle = aa->aa_node->ad_handle; 86 struct acpi_resources res; 87 struct acpi_mem *mem; 88 struct acpi_irq *irq; 89 ACPI_STATUS rv; 90 int error; 91 void *ih; 92 93 sc->sc_dev = self; 94 95 rv = acpi_resource_parse(sc->sc_dev, handle, "_CRS", 96 &res, &acpi_resource_parse_ops_default); 97 if (ACPI_FAILURE(rv)) { 98 return; 99 } 100 101 sc->sc_flags = DWC_MMC_F_USE_HOLD_REG | DWC_MMC_F_DMA; 102 103 if (acpi_compatible_match(aa, rockchip_compat_data)) { 104 sc->sc_ciu_div = 2; 105 sc->sc_intr_cardmask = DWC_MMC_INT_SDIO_INT(8); 106 } 107 108 mem = acpi_res_mem(&res, 0); 109 if (mem == NULL) { 110 aprint_error_dev(self, "couldn't find mem resource\n"); 111 goto done; 112 } 113 114 irq = acpi_res_irq(&res, 0); 115 if (irq == NULL) { 116 aprint_error_dev(self, "couldn't find irq resource\n"); 117 goto done; 118 } 119 120 sc->sc_bst = aa->aa_memt; 121 error = bus_space_map(sc->sc_bst, mem->ar_base, mem->ar_length, 122 0, &sc->sc_bsh); 123 if (error != 0) { 124 aprint_error_dev(self, "couldn't map registers\n"); 125 goto done; 126 } 127 sc->sc_dmat = aa->aa_dmat; 128 129 if (dwcmmc_acpi_init_props(sc, handle) != 0) { 130 goto done; 131 } 132 133 if (dwc_mmc_init(sc) != 0) { 134 goto done; 135 } 136 137 ih = acpi_intr_establish(self, (uint64_t)(uintptr_t)handle, IPL_NET, 138 false, dwc_mmc_intr, sc, device_xname(self)); 139 if (ih == NULL) { 140 aprint_error_dev(self, "couldn't establish interrupt\n"); 141 goto done; 142 } 143 144 done: 145 acpi_resource_cleanup(&res); 146 } 147 148 static int 149 dwcmmc_acpi_init_props(struct dwc_mmc_softc *sc, ACPI_HANDLE handle) 150 { 151 ACPI_INTEGER ival; 152 bool bval; 153 154 /* Defaults */ 155 sc->sc_fifo_depth = 0; 156 sc->sc_clock_freq = UINT_MAX; 157 sc->sc_bus_width = 4; 158 159 /* Get settings from DSD properties */ 160 if (ACPI_SUCCESS(acpi_dsd_integer(handle, "fifo-depth", &ival))) { 161 sc->sc_fifo_depth = ival; 162 } 163 if (ACPI_SUCCESS(acpi_dsd_integer(handle, "max-frequency", &ival))) { 164 sc->sc_clock_freq = ival; 165 } 166 if (ACPI_SUCCESS(acpi_dsd_integer(handle, "bus-width", &ival))) { 167 sc->sc_bus_width = ival; 168 } 169 bval = false; 170 acpi_dsd_bool(handle, "non-removable", &bval); 171 if (bval) { 172 sc->sc_flags |= DWC_MMC_F_NON_REMOVABLE; 173 } 174 bval = false; 175 acpi_dsd_bool(handle, "broken-cd", &bval); 176 if (bval) { 177 sc->sc_flags |= DWC_MMC_F_BROKEN_CD; 178 } 179 180 if (sc->sc_clock_freq == 0 || sc->sc_clock_freq == UINT_MAX) { 181 aprint_error_dev(sc->sc_dev, "clock frequency not specified\n"); 182 return ENXIO; 183 } 184 185 return 0; 186 } 187
Indexes created Sun Oct 25 00:26:45 UTC 2026