2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2001 Mitsuru IWASAKI
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/sysctl.h>
41 #include <contrib/dev/acpica/include/acpi.h>
42 #include <contrib/dev/acpica/include/accommon.h>
43 #include <contrib/dev/acpica/include/actables.h>
45 #include <dev/acpica/acpivar.h>
47 #include <machine/nexusvar.h>
50 SYSCTL_INT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RWTUN,
51 &acpi_resume_beep, 0, "Beep the PC speaker when resuming");
54 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
56 static int intr_model = ACPI_INTR_PIC;
59 acpi_machdep_init(device_t dev)
61 struct acpi_softc *sc;
63 sc = device_get_softc(dev);
66 acpi_install_wakeup_handler(sc);
68 if (intr_model != ACPI_INTR_PIC)
69 acpi_SetIntrModel(intr_model);
71 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx,
72 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
73 "reset_video", CTLFLAG_RW, &acpi_reset_video, 0,
74 "Call the VESA reset BIOS vector on the resume path");
80 acpi_SetDefaultIntrModel(int model)
87 acpi_machdep_quirks(int *quirks)
94 * Map a table. First map the header to determine the table length and then map
98 map_table(vm_paddr_t pa, const char *sig)
100 ACPI_TABLE_HEADER *header;
104 header = pmap_mapbios(pa, sizeof(ACPI_TABLE_HEADER));
105 if (strncmp(header->Signature, sig, ACPI_NAMESEG_SIZE) != 0) {
106 pmap_unmapbios((vm_offset_t)header, sizeof(ACPI_TABLE_HEADER));
109 length = header->Length;
110 pmap_unmapbios((vm_offset_t)header, sizeof(ACPI_TABLE_HEADER));
111 table = pmap_mapbios(pa, length);
112 if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
114 printf("ACPI: Failed checksum for table %s\n", sig);
115 #if (ACPI_CHECKSUM_ABORT)
116 pmap_unmapbios((vm_offset_t)table, length);
124 * See if a given ACPI table is the requested table. Returns the
125 * length of the table if it matches or zero on failure.
128 probe_table(vm_paddr_t address, const char *sig)
130 ACPI_TABLE_HEADER *table;
133 table = pmap_mapbios(address, sizeof(ACPI_TABLE_HEADER));
134 ret = strncmp(table->Signature, sig, ACPI_NAMESEG_SIZE) == 0;
135 pmap_unmapbios((vm_offset_t)table, sizeof(ACPI_TABLE_HEADER));
140 * Try to map a table at a given physical address previously returned
141 * by acpi_find_table().
144 acpi_map_table(vm_paddr_t pa, const char *sig)
147 return (map_table(pa, sig));
150 /* Unmap a table previously mapped via acpi_map_table(). */
152 acpi_unmap_table(void *table)
154 ACPI_TABLE_HEADER *header;
156 header = (ACPI_TABLE_HEADER *)table;
157 pmap_unmapbios((vm_offset_t)table, header->Length);
161 * Return the physical address of the requested table or zero if one
165 acpi_find_table(const char *sig)
167 ACPI_PHYSICAL_ADDRESS rsdp_ptr;
168 ACPI_TABLE_RSDP *rsdp;
169 ACPI_TABLE_RSDT *rsdt;
170 ACPI_TABLE_XSDT *xsdt;
171 ACPI_TABLE_HEADER *table;
175 if (resource_disabled("acpi", 0))
179 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
180 * calls pmap_mapbios() to find the RSDP, we assume that we can use
181 * pmap_mapbios() to map the RSDP.
183 if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
185 rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
188 printf("ACPI: Failed to map RSDP\n");
193 * For ACPI >= 2.0, use the XSDT if it is available.
194 * Otherwise, use the RSDT.
197 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
199 * AcpiOsGetRootPointer only verifies the checksum for
200 * the version 1.0 portion of the RSDP. Version 2.0 has
201 * an additional checksum that we verify first.
203 if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
205 printf("ACPI: RSDP failed extended checksum\n");
208 xsdt = map_table(rsdp->XsdtPhysicalAddress, ACPI_SIG_XSDT);
211 printf("ACPI: Failed to map XSDT\n");
214 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
216 for (i = 0; i < count; i++)
217 if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
218 addr = xsdt->TableOffsetEntry[i];
221 acpi_unmap_table(xsdt);
223 rsdt = map_table(rsdp->RsdtPhysicalAddress, ACPI_SIG_RSDT);
226 printf("ACPI: Failed to map RSDT\n");
229 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
231 for (i = 0; i < count; i++)
232 if (probe_table(rsdt->TableOffsetEntry[i], sig)) {
233 addr = rsdt->TableOffsetEntry[i];
236 acpi_unmap_table(rsdt);
238 pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));
243 * Verify that we can map the full table and that its checksum is
246 table = map_table(addr, sig);
249 acpi_unmap_table(table);
255 * ACPI nexus(4) driver.
258 nexus_acpi_probe(device_t dev)
262 error = acpi_identify();
266 return (BUS_PROBE_DEFAULT);
270 nexus_acpi_attach(device_t dev)
273 nexus_init_resources();
274 bus_generic_probe(dev);
275 if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL)
276 panic("failed to add acpi0 device");
278 return (bus_generic_attach(dev));
281 static device_method_t nexus_acpi_methods[] = {
282 /* Device interface */
283 DEVMETHOD(device_probe, nexus_acpi_probe),
284 DEVMETHOD(device_attach, nexus_acpi_attach),
288 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver);
289 static devclass_t nexus_devclass;
291 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, nexus_devclass, 0, 0);