/* $NetBSD: xhci_acpi.c,v 1.14 2024/12/09 22:15:33 jmcneill Exp $ */ /*- * Copyright (c) 2018 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jared McNeill . * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: xhci_acpi.c,v 1.14 2024/12/09 22:15:33 jmcneill Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define XHCI_ACPI_FLAG_URS __BIT(0) static const struct device_compatible_entry compat_data[] = { /* XHCI-compliant USB controller without standard debug */ { .compat = "PNP0D10" }, /* XHCI-compliant USB controller with standard debug */ { .compat = "PNP0D15" }, /* DesignWare Dual Role SuperSpeed USB controller */ { .compat = "808622B7" }, /* XHCI-compliant URS USB controller */ { .compat = "PNP0CA1", .value = XHCI_ACPI_FLAG_URS }, DEVICE_COMPAT_EOL }; struct xhci_acpi_softc { struct xhci_softc sc_xhci; ACPI_HANDLE sc_handle; }; static int xhci_acpi_match(device_t, cfdata_t, void *); static void xhci_acpi_attach(device_t, device_t, void *); static void xhci_acpi_init(struct xhci_softc *); CFATTACH_DECL2_NEW(xhci_acpi, sizeof(struct xhci_acpi_softc), xhci_acpi_match, xhci_acpi_attach, NULL, xhci_activate, NULL, xhci_childdet); static int xhci_acpi_match(device_t parent, cfdata_t cf, void *aux) { struct acpi_attach_args *aa = aux; return acpi_compatible_match(aa, compat_data); } static void xhci_acpi_attach(device_t parent, device_t self, void *aux) { struct xhci_acpi_softc * const asc = device_private(self); struct xhci_softc * const sc = &asc->sc_xhci; struct acpi_attach_args *aa = aux; struct acpi_resources res, res_urs; struct acpi_mem *mem; struct acpi_irq *irq; uint32_t hccparams; uintptr_t flags; ACPI_STATUS rv; bool res_urs_valid = false; int error; void *ih; flags = acpi_compatible_lookup(aa, compat_data)->value; asc->sc_handle = aa->aa_node->ad_handle; sc->sc_dev = self; sc->sc_bus.ub_hcpriv = sc; sc->sc_bus.ub_revision = USBREV_3_0; sc->sc_quirks = 0; sc->sc_vendor_init = xhci_acpi_init; rv = acpi_resource_parse(sc->sc_dev, asc->sc_handle, "_CRS", &res, &acpi_resource_parse_ops_default); if (ACPI_FAILURE(rv)) return; mem = acpi_res_mem(&res, 0); if (mem == NULL) { aprint_error_dev(self, "couldn't find mem resource\n"); goto done; } if ((flags & XHCI_ACPI_FLAG_URS) == 0) { irq = acpi_res_irq(&res, 0); if (irq == NULL) { aprint_error_dev(self, "couldn't find irq resource\n"); goto done; } } else { struct acpi_devnode *ad; /* For URS nodes, the interrupt resources is on a child with _ADR=0. */ irq = NULL; SIMPLEQ_FOREACH(ad, &aa->aa_node->ad_child_head, ad_child_list) { ACPI_INTEGER adr; if (acpi_eval_integer(ad->ad_handle, "_ADR", &adr) == AE_OK && adr == 0) { rv = acpi_resource_parse(sc->sc_dev, ad->ad_handle, "_CRS", &res_urs, &acpi_resource_parse_ops_quiet); if (ACPI_FAILURE(rv)) { aprint_error_dev(self, "couldn't parse URS resources: %s\n", AcpiFormatException(rv)); goto done; } res_urs_valid = true; irq = acpi_res_irq(&res_urs, 0); break; } } if (irq == NULL) { aprint_error_dev(self, "couldn't find irq resource\n"); goto done; } } sc->sc_ios = mem->ar_length; sc->sc_iot = aa->aa_memt; error = bus_space_map(sc->sc_iot, mem->ar_base, mem->ar_length, 0, &sc->sc_ioh); if (error) { aprint_error_dev(self, "couldn't map registers\n"); return; } hccparams = bus_space_read_4(sc->sc_iot, sc->sc_ioh, XHCI_HCCPARAMS); if (XHCI_HCC_AC64(hccparams)) { aprint_verbose_dev(self, "64-bit DMA"); if (BUS_DMA_TAG_VALID(aa->aa_dmat64)) { aprint_verbose("\n"); sc->sc_bus.ub_dmatag = aa->aa_dmat64; } else { aprint_verbose(" - limited\n"); sc->sc_bus.ub_dmatag = aa->aa_dmat; } } else { aprint_verbose_dev(self, "32-bit DMA\n"); sc->sc_bus.ub_dmatag = aa->aa_dmat; } ih = acpi_intr_establish_irq(self, irq, IPL_USB, true, xhci_intr, sc, device_xname(self)); if (ih == NULL) { aprint_error_dev(self, "couldn't establish interrupt\n"); return; } error = xhci_init(sc); if (error) { aprint_error_dev(self, "init failed, error = %d\n", error); return; } sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE); sc->sc_child2 = config_found(self, &sc->sc_bus2, usbctlprint, CFARGS_NONE); done: acpi_resource_cleanup(&res); if (res_urs_valid) { acpi_resource_cleanup(&res_urs); } } static void xhci_acpi_init(struct xhci_softc *sc) { struct xhci_acpi_softc * const asc = (struct xhci_acpi_softc *)sc; acpi_usb_post_reset(asc->sc_handle); }