acpi_usb.c revision 1.1.2.2
1 1.1.2.2 pgoyette /* $NetBSD: acpi_usb.c,v 1.1.2.2 2018/11/26 01:52:30 pgoyette Exp $ */ 2 1.1.2.2 pgoyette 3 1.1.2.2 pgoyette /*- 4 1.1.2.2 pgoyette * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 1.1.2.2 pgoyette * All rights reserved. 6 1.1.2.2 pgoyette * 7 1.1.2.2 pgoyette * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 pgoyette * by Jared McNeill <jmcneill (at) invisible.ca>. 9 1.1.2.2 pgoyette * 10 1.1.2.2 pgoyette * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 pgoyette * modification, are permitted provided that the following conditions 12 1.1.2.2 pgoyette * are met: 13 1.1.2.2 pgoyette * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 pgoyette * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 pgoyette * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 pgoyette * documentation and/or other materials provided with the distribution. 18 1.1.2.2 pgoyette * 19 1.1.2.2 pgoyette * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.1.2.2 pgoyette * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.1.2.2 pgoyette * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.1.2.2 pgoyette * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.1.2.2 pgoyette * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.1.2.2 pgoyette * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.1.2.2 pgoyette * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.1.2.2 pgoyette * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.1.2.2 pgoyette * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.1.2.2 pgoyette * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.1.2.2 pgoyette * POSSIBILITY OF SUCH DAMAGE. 30 1.1.2.2 pgoyette */ 31 1.1.2.2 pgoyette 32 1.1.2.2 pgoyette /* 33 1.1.2.2 pgoyette * USB Device-Specific Method (_DSM) support: 34 1.1.2.2 pgoyette * 35 1.1.2.2 pgoyette * https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/usb-device-specific-method---dsm- 36 1.1.2.2 pgoyette */ 37 1.1.2.2 pgoyette 38 1.1.2.2 pgoyette #include <sys/cdefs.h> 39 1.1.2.2 pgoyette __KERNEL_RCSID(0, "$NetBSD: acpi_usb.c,v 1.1.2.2 2018/11/26 01:52:30 pgoyette Exp $"); 40 1.1.2.2 pgoyette 41 1.1.2.2 pgoyette #include <sys/param.h> 42 1.1.2.2 pgoyette 43 1.1.2.2 pgoyette #include <dev/acpi/acpireg.h> 44 1.1.2.2 pgoyette #include <dev/acpi/acpivar.h> 45 1.1.2.2 pgoyette #include <dev/acpi/acpi_usb.h> 46 1.1.2.2 pgoyette 47 1.1.2.2 pgoyette /* Windows-defined USB subsystem device-specific method (_DSM) */ 48 1.1.2.2 pgoyette static UINT8 ehci_acpi_dsm_uuid[ACPI_UUID_LENGTH] = { 49 1.1.2.2 pgoyette 0x85, 0xe3, 0x2e, 0xce, 0xe6, 0x00, 0xcb, 0x48, 50 1.1.2.2 pgoyette 0x9f, 0x05, 0x2e, 0xdb, 0x92, 0x7c, 0x48, 0x99 51 1.1.2.2 pgoyette }; 52 1.1.2.2 pgoyette 53 1.1.2.2 pgoyette void 54 1.1.2.2 pgoyette acpi_usb_post_reset(ACPI_HANDLE handle) 55 1.1.2.2 pgoyette { 56 1.1.2.2 pgoyette ACPI_OBJECT_LIST objs; 57 1.1.2.2 pgoyette ACPI_OBJECT obj[4]; 58 1.1.2.2 pgoyette ACPI_HANDLE method; 59 1.1.2.2 pgoyette 60 1.1.2.2 pgoyette /* 61 1.1.2.2 pgoyette * Invoke the _DSM control method for post-reset processing function 62 1.1.2.2 pgoyette * for dual-role USB controllers. If supported, this will perform any 63 1.1.2.2 pgoyette * controller-specific initialization required to put the dual-role 64 1.1.2.2 pgoyette * device into host mode. 65 1.1.2.2 pgoyette */ 66 1.1.2.2 pgoyette 67 1.1.2.2 pgoyette objs.Count = 4; 68 1.1.2.2 pgoyette objs.Pointer = obj; 69 1.1.2.2 pgoyette obj[0].Type = ACPI_TYPE_BUFFER; 70 1.1.2.2 pgoyette obj[0].Buffer.Length = ACPI_UUID_LENGTH; 71 1.1.2.2 pgoyette obj[0].Buffer.Pointer = ehci_acpi_dsm_uuid; 72 1.1.2.2 pgoyette obj[1].Type = ACPI_TYPE_INTEGER; 73 1.1.2.2 pgoyette obj[1].Integer.Value = 0; /* Revision ID = 0 */ 74 1.1.2.2 pgoyette obj[2].Type = ACPI_TYPE_INTEGER; 75 1.1.2.2 pgoyette obj[2].Integer.Value = 1; /* Function index = 1 */ 76 1.1.2.2 pgoyette obj[3].Type = ACPI_TYPE_PACKAGE; 77 1.1.2.2 pgoyette obj[3].Package.Count = 0; /* Empty package (not used) */ 78 1.1.2.2 pgoyette obj[3].Package.Elements = NULL; 79 1.1.2.2 pgoyette 80 1.1.2.2 pgoyette if (ACPI_FAILURE(AcpiGetHandle(handle, "_DSM", &method))) 81 1.1.2.2 pgoyette return; 82 1.1.2.2 pgoyette 83 1.1.2.2 pgoyette (void)AcpiEvaluateObject(method, NULL, &objs, NULL); 84 1.1.2.2 pgoyette } 85
Indexes created Thu Oct 02 10:09:58 GMT 2025