2 * Copyright (c) 2001 Mitsuru IWASAKI
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/sysctl.h>
39 #include <contrib/dev/acpica/include/acpi.h>
40 #include <contrib/dev/acpica/include/accommon.h>
41 #include <contrib/dev/acpica/include/actables.h>
43 #include <dev/acpica/acpivar.h>
45 #include <machine/nexusvar.h>
47 SYSCTL_DECL(_debug_acpi);
50 TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep);
51 SYSCTL_INT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep,
52 0, "Beep the PC speaker when resuming");
55 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
57 static int intr_model = ACPI_INTR_PIC;
60 acpi_machdep_init(device_t dev)
62 struct acpi_softc *sc;
64 sc = device_get_softc(dev);
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)
97 __asm __volatile("sti; hlt");
101 * Support for mapping ACPI tables during early boot. Currently this
102 * uses the crashdump map to map each table. However, the crashdump
103 * map is created in pmap_bootstrap() right after the direct map, so
104 * we should be able to just use pmap_mapbios() here instead.
106 * This makes the following assumptions about how we use this KVA:
107 * pages 0 and 1 are used to map in the header of each table found via
108 * the RSDT or XSDT and pages 2 to n are used to map in the RSDT or
109 * XSDT. This has to use 2 pages for the table headers in case a
110 * header spans a page boundary.
112 * XXX: We don't ensure the table fits in the available address space
113 * in the crashdump map.
117 * Map some memory using the crashdump map. 'offset' is an offset in
118 * pages into the crashdump map to use for the start of the mapping.
121 table_map(vm_paddr_t pa, int offset, vm_offset_t length)
126 off = pa & PAGE_MASK;
127 length = roundup(length + off, PAGE_SIZE);
129 va = (vm_offset_t)pmap_kenter_temporary(pa, offset) +
130 (offset * PAGE_SIZE);
131 data = (void *)(va + off);
143 /* Unmap memory previously mapped with table_map(). */
145 table_unmap(void *data, vm_offset_t length)
149 va = (vm_offset_t)data;
150 off = va & PAGE_MASK;
151 length = roundup(length + off, PAGE_SIZE);
162 * Map a table at a given offset into the crashdump map. It first
163 * maps the header to determine the table length and then maps the
167 map_table(vm_paddr_t pa, int offset, const char *sig)
169 ACPI_TABLE_HEADER *header;
173 header = table_map(pa, offset, sizeof(ACPI_TABLE_HEADER));
174 if (strncmp(header->Signature, sig, ACPI_NAME_SIZE) != 0) {
175 table_unmap(header, sizeof(ACPI_TABLE_HEADER));
178 length = header->Length;
179 table_unmap(header, sizeof(ACPI_TABLE_HEADER));
180 table = table_map(pa, offset, length);
181 if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
183 printf("ACPI: Failed checksum for table %s\n", sig);
184 #if (ACPI_CHECKSUM_ABORT)
185 table_unmap(table, length);
193 * See if a given ACPI table is the requested table. Returns the
194 * length of the able if it matches or zero on failure.
197 probe_table(vm_paddr_t address, const char *sig)
199 ACPI_TABLE_HEADER *table;
201 table = table_map(address, 0, sizeof(ACPI_TABLE_HEADER));
204 printf("ACPI: Failed to map table at 0x%jx\n",
209 printf("Table '%.4s' at 0x%jx\n", table->Signature,
212 if (strncmp(table->Signature, sig, ACPI_NAME_SIZE) != 0) {
213 table_unmap(table, sizeof(ACPI_TABLE_HEADER));
216 table_unmap(table, sizeof(ACPI_TABLE_HEADER));
221 * Try to map a table at a given physical address previously returned
222 * by acpi_find_table().
225 acpi_map_table(vm_paddr_t pa, const char *sig)
228 return (map_table(pa, 0, sig));
231 /* Unmap a table previously mapped via acpi_map_table(). */
233 acpi_unmap_table(void *table)
235 ACPI_TABLE_HEADER *header;
237 header = (ACPI_TABLE_HEADER *)table;
238 table_unmap(table, header->Length);
242 * Return the physical address of the requested table or zero if one
246 acpi_find_table(const char *sig)
248 ACPI_PHYSICAL_ADDRESS rsdp_ptr;
249 ACPI_TABLE_RSDP *rsdp;
250 ACPI_TABLE_RSDT *rsdt;
251 ACPI_TABLE_XSDT *xsdt;
252 ACPI_TABLE_HEADER *table;
256 if (resource_disabled("acpi", 0))
260 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
261 * calls pmap_mapbios() to find the RSDP, we assume that we can use
262 * pmap_mapbios() to map the RSDP.
264 if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
266 rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
269 printf("ACPI: Failed to map RSDP\n");
274 * For ACPI >= 2.0, use the XSDT if it is available.
275 * Otherwise, use the RSDT. We map the XSDT or RSDT at page 2
276 * in the crashdump area. Pages 0 and 1 are used to map in the
277 * headers of candidate ACPI tables.
280 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
282 * AcpiOsGetRootPointer only verifies the checksum for
283 * the version 1.0 portion of the RSDP. Version 2.0 has
284 * an additional checksum that we verify first.
286 if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
288 printf("ACPI: RSDP failed extended checksum\n");
291 xsdt = map_table(rsdp->XsdtPhysicalAddress, 2, ACPI_SIG_XSDT);
294 printf("ACPI: Failed to map XSDT\n");
297 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
299 for (i = 0; i < count; i++)
300 if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
301 addr = xsdt->TableOffsetEntry[i];
304 acpi_unmap_table(xsdt);
306 rsdt = map_table(rsdp->RsdtPhysicalAddress, 2, ACPI_SIG_RSDT);
309 printf("ACPI: Failed to map RSDT\n");
312 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
314 for (i = 0; i < count; i++)
315 if (probe_table(rsdt->TableOffsetEntry[i], sig)) {
316 addr = rsdt->TableOffsetEntry[i];
319 acpi_unmap_table(rsdt);
321 pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));
324 printf("ACPI: No %s table found\n", sig);
328 printf("%s: Found table at 0x%jx\n", sig, (uintmax_t)addr);
331 * Verify that we can map the full table and that its checksum is
334 table = map_table(addr, 0, sig);
337 acpi_unmap_table(table);
343 * ACPI nexus(4) driver.
346 nexus_acpi_probe(device_t dev)
350 error = acpi_identify();
354 return (BUS_PROBE_DEFAULT);
358 nexus_acpi_attach(device_t dev)
363 nexus_init_resources();
364 bus_generic_probe(dev);
365 acpi_dev = BUS_ADD_CHILD(dev, 10, "acpi", 0);
366 if (acpi_dev == NULL)
367 panic("failed to add acpi0 device");
369 error = bus_generic_attach(dev);
371 acpi_install_wakeup_handler(device_get_softc(acpi_dev));
376 static device_method_t nexus_acpi_methods[] = {
377 /* Device interface */
378 DEVMETHOD(device_probe, nexus_acpi_probe),
379 DEVMETHOD(device_attach, nexus_acpi_attach),
384 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver);
385 static devclass_t nexus_devclass;
387 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, nexus_devclass, 0, 0);