1 /* $NetBSD: ahcisata_acpi.c,v 1.6 2020/12/07 10:02:51 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 1.6 2020/12/07 10:02:51 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
ahcisata_acpi_match(device_t parent,cfdata_t cf,void * aux)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
ahcisata_acpi_attach(device_t parent,device_t self,void * aux)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,
116 (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
117 IPL_BIO, false, ahci_intr, sc, device_xname(self));
118 if (ih == NULL) {
119 aprint_error_dev(self, "couldn't install interrupt handler\n");
120 return;
121 }
122
123 ahci_attach(sc);
124
125 done:
126 acpi_resource_cleanup(&res);
127 }
128