1 /* $NetBSD: ahcisata_acpi.c,v 1.5 2020/04/15 19:26:51 jmcneill 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: ahcisata_acpi.c,v 1.5 2020/04/15 19:26:51 jmcneill Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/cpu.h> 38 #include <sys/device.h> 39 #include <sys/termios.h> 40 41 #include <dev/ata/atavar.h> 42 #include <dev/ic/ahcisatavar.h> 43 44 #include <dev/acpi/acpireg.h> 45 #include <dev/acpi/acpivar.h> 46 #include <dev/acpi/acpi_intr.h> 47 48 #include <dev/pci/pcireg.h> 49 50 static int ahcisata_acpi_match(device_t, cfdata_t, void *); 51 static void ahcisata_acpi_attach(device_t, device_t, void *); 52 53 CFATTACH_DECL_NEW(ahcisata_acpi, sizeof(struct ahci_softc), ahcisata_acpi_match, ahcisata_acpi_attach, NULL, NULL); 54 55 static int 56 ahcisata_acpi_match(device_t parent, cfdata_t cf, void *aux) 57 { 58 struct acpi_attach_args *aa = aux; 59 60 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 61 return 0; 62 63 return acpi_match_class(aa->aa_node->ad_handle, 64 PCI_CLASS_MASS_STORAGE, 65 PCI_SUBCLASS_MASS_STORAGE_SATA, 66 PCI_INTERFACE_SATA_AHCI10); 67 } 68 69 static void 70 ahcisata_acpi_attach(device_t parent, device_t self, void *aux) 71 { 72 struct ahci_softc * const sc = device_private(self); 73 struct acpi_attach_args *aa = aux; 74 struct acpi_resources res; 75 struct acpi_mem *mem; 76 struct acpi_irq *irq; 77 ACPI_STATUS rv; 78 uint32_t cap; 79 void *ih; 80 81 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 82 &res, &acpi_resource_parse_ops_default); 83 if (ACPI_FAILURE(rv)) 84 return; 85 86 mem = acpi_res_mem(&res, 0); 87 if (mem == NULL) { 88 aprint_error(": couldn't find mem resource\n"); 89 goto done; 90 } 91 92 irq = acpi_res_irq(&res, 0); 93 if (irq == NULL) { 94 aprint_error(": couldn't find irq resource\n"); 95 goto done; 96 } 97 98 sc->sc_atac.atac_dev = self; 99 sc->sc_ahcit = aa->aa_memt; 100 sc->sc_ahcis = mem->ar_length; 101 if (bus_space_map(aa->aa_memt, mem->ar_base, mem->ar_length, 0, &sc->sc_ahcih) != 0) { 102 aprint_error(": couldn't map registers\n"); 103 goto done; 104 } 105 106 cap = AHCI_READ(sc, AHCI_CAP); 107 if ((cap & AHCI_CAP_64BIT) != 0 && BUS_DMA_TAG_VALID(aa->aa_dmat64)) { 108 aprint_verbose_dev(self, "using 64-bit DMA\n"); 109 sc->sc_dmat = aa->aa_dmat64; 110 } else { 111 aprint_verbose_dev(self, "using 32-bit DMA\n"); 112 sc->sc_dmat = aa->aa_dmat; 113 } 114 115 ih = acpi_intr_establish(self, (uint64_t)aa->aa_node->ad_handle, 116 IPL_BIO, false, ahci_intr, sc, device_xname(self)); 117 if (ih == NULL) { 118 aprint_error_dev(self, "couldn't install interrupt handler\n"); 119 return; 120 } 121 122 ahci_attach(sc); 123 124 done: 125 acpi_resource_cleanup(&res); 126 } 127