1 /* $NetBSD: xhci_acpi.c,v 1.13 2021/08/07 16:19:09 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jared McNeill <jmcneill@invisible.ca>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: xhci_acpi.c,v 1.13 2021/08/07 16:19:09 thorpej Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/cpu.h> 38 #include <sys/device.h> 39 40 #include <dev/usb/usb.h> 41 #include <dev/usb/usbdi.h> 42 #include <dev/usb/usbdivar.h> 43 #include <dev/usb/usb_mem.h> 44 #include <dev/usb/xhcireg.h> 45 #include <dev/usb/xhcivar.h> 46 47 #include <dev/acpi/acpireg.h> 48 #include <dev/acpi/acpivar.h> 49 #include <dev/acpi/acpi_intr.h> 50 #include <dev/acpi/acpi_usb.h> 51 52 static const struct device_compatible_entry compat_data[] = { 53 /* XHCI-compliant USB controller without standard debug */ 54 { .compat = "PNP0D10" }, 55 56 /* XHCI-compliant USB controller with standard debug */ 57 { .compat = "PNP0D15" }, 58 59 /* DesignWare Dual Role SuperSpeed USB controller */ 60 { .compat = "808622B7", }, 61 62 DEVICE_COMPAT_EOL 63 }; 64 65 struct xhci_acpi_softc { 66 struct xhci_softc sc_xhci; 67 ACPI_HANDLE sc_handle; 68 }; 69 70 static int xhci_acpi_match(device_t, cfdata_t, void *); 71 static void xhci_acpi_attach(device_t, device_t, void *); 72 73 static void xhci_acpi_init(struct xhci_softc *); 74 75 CFATTACH_DECL2_NEW(xhci_acpi, sizeof(struct xhci_acpi_softc), 76 xhci_acpi_match, xhci_acpi_attach, NULL, 77 xhci_activate, NULL, xhci_childdet); 78 79 static int 80 xhci_acpi_match(device_t parent, cfdata_t cf, void *aux) 81 { 82 struct acpi_attach_args *aa = aux; 83 84 return acpi_compatible_match(aa, compat_data); 85 } 86 87 static void 88 xhci_acpi_attach(device_t parent, device_t self, void *aux) 89 { 90 struct xhci_acpi_softc * const asc = device_private(self); 91 struct xhci_softc * const sc = &asc->sc_xhci; 92 struct acpi_attach_args *aa = aux; 93 struct acpi_resources res; 94 struct acpi_mem *mem; 95 struct acpi_irq *irq; 96 uint32_t hccparams; 97 ACPI_STATUS rv; 98 int error; 99 void *ih; 100 101 asc->sc_handle = aa->aa_node->ad_handle; 102 103 sc->sc_dev = self; 104 sc->sc_bus.ub_hcpriv = sc; 105 sc->sc_bus.ub_revision = USBREV_3_0; 106 sc->sc_quirks = 0; 107 sc->sc_vendor_init = xhci_acpi_init; 108 109 rv = acpi_resource_parse(sc->sc_dev, asc->sc_handle, "_CRS", 110 &res, &acpi_resource_parse_ops_default); 111 if (ACPI_FAILURE(rv)) 112 return; 113 114 mem = acpi_res_mem(&res, 0); 115 if (mem == NULL) { 116 aprint_error_dev(self, "couldn't find mem resource\n"); 117 goto done; 118 } 119 120 irq = acpi_res_irq(&res, 0); 121 if (irq == NULL) { 122 aprint_error_dev(self, "couldn't find irq resource\n"); 123 goto done; 124 } 125 126 sc->sc_ios = mem->ar_length; 127 sc->sc_iot = aa->aa_memt; 128 error = bus_space_map(sc->sc_iot, mem->ar_base, mem->ar_length, 0, &sc->sc_ioh); 129 if (error) { 130 aprint_error_dev(self, "couldn't map registers\n"); 131 return; 132 } 133 134 hccparams = bus_space_read_4(sc->sc_iot, sc->sc_ioh, XHCI_HCCPARAMS); 135 if (XHCI_HCC_AC64(hccparams)) { 136 aprint_verbose_dev(self, "64-bit DMA"); 137 if (BUS_DMA_TAG_VALID(aa->aa_dmat64)) { 138 aprint_verbose("\n"); 139 sc->sc_bus.ub_dmatag = aa->aa_dmat64; 140 } else { 141 aprint_verbose(" - limited\n"); 142 sc->sc_bus.ub_dmatag = aa->aa_dmat; 143 } 144 } else { 145 aprint_verbose_dev(self, "32-bit DMA\n"); 146 sc->sc_bus.ub_dmatag = aa->aa_dmat; 147 } 148 149 ih = acpi_intr_establish(self, 150 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 151 IPL_USB, true, xhci_intr, sc, device_xname(self)); 152 if (ih == NULL) { 153 aprint_error_dev(self, "couldn't establish interrupt\n"); 154 return; 155 } 156 157 error = xhci_init(sc); 158 if (error) { 159 aprint_error_dev(self, "init failed, error = %d\n", error); 160 return; 161 } 162 163 sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE); 164 sc->sc_child2 = config_found(self, &sc->sc_bus2, usbctlprint, 165 CFARGS_NONE); 166 167 done: 168 acpi_resource_cleanup(&res); 169 } 170 171 static void 172 xhci_acpi_init(struct xhci_softc *sc) 173 { 174 struct xhci_acpi_softc * const asc = (struct xhci_acpi_softc *)sc; 175 176 acpi_usb_post_reset(asc->sc_handle); 177 } 178