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);
49 uint32_t acpi_resume_beep;
50 TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep);
51 SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep,
52 0, "Beep the PC speaker when resuming");
54 uint32_t acpi_reset_video;
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);
67 acpi_install_wakeup_handler(sc);
69 if (intr_model == ACPI_INTR_PIC)
70 BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt,
71 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
73 acpi_SetIntrModel(intr_model);
75 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
76 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
77 "reset_video", CTLFLAG_RW, &acpi_reset_video, 0,
78 "Call the VESA reset BIOS vector on the resume path");
84 acpi_SetDefaultIntrModel(int model)
90 /* Check BIOS date. If 1998 or older, disable ACPI. */
92 acpi_machdep_quirks(int *quirks)
97 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */
98 va = pmap_mapbios(0xffff0, 16);
99 sscanf(va + 11, "%2d", &year);
100 pmap_unmapbios((vm_offset_t)va, 16);
103 * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this
104 * check must be changed by my 114th birthday.
106 if (year > 90 && year < 99)
107 *quirks = ACPI_Q_BROKEN;
116 __asm __volatile("sti; hlt");
120 * Support for mapping ACPI tables during early boot. This abuses the
121 * crashdump map because the kernel cannot allocate KVA in
122 * pmap_mapbios() when this is used. This makes the following
123 * assumptions about how we use this KVA: pages 0 and 1 are used to
124 * map in the header of each table found via the RSDT or XSDT and
125 * pages 2 to n are used to map in the RSDT or XSDT. This has to use
126 * 2 pages for the table headers in case a header spans a page
129 * XXX: We don't ensure the table fits in the available address space
130 * in the crashdump map.
134 * Map some memory using the crashdump map. 'offset' is an offset in
135 * pages into the crashdump map to use for the start of the mapping.
138 table_map(vm_paddr_t pa, int offset, vm_offset_t length)
143 off = pa & PAGE_MASK;
144 length = roundup(length + off, PAGE_SIZE);
146 va = (vm_offset_t)pmap_kenter_temporary(pa, offset) +
147 (offset * PAGE_SIZE);
148 data = (void *)(va + off);
160 /* Unmap memory previously mapped with table_map(). */
162 table_unmap(void *data, vm_offset_t length)
166 va = (vm_offset_t)data;
167 off = va & PAGE_MASK;
168 length = roundup(length + off, PAGE_SIZE);
179 * Map a table at a given offset into the crashdump map. It first
180 * maps the header to determine the table length and then maps the
184 map_table(vm_paddr_t pa, int offset, const char *sig)
186 ACPI_TABLE_HEADER *header;
190 header = table_map(pa, offset, sizeof(ACPI_TABLE_HEADER));
191 if (strncmp(header->Signature, sig, ACPI_NAME_SIZE) != 0) {
192 table_unmap(header, sizeof(ACPI_TABLE_HEADER));
195 length = header->Length;
196 table_unmap(header, sizeof(ACPI_TABLE_HEADER));
197 table = table_map(pa, offset, length);
198 if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
200 printf("ACPI: Failed checksum for table %s\n", sig);
201 #if (ACPI_CHECKSUM_ABORT)
202 table_unmap(table, length);
210 * See if a given ACPI table is the requested table. Returns the
211 * length of the able if it matches or zero on failure.
214 probe_table(vm_paddr_t address, const char *sig)
216 ACPI_TABLE_HEADER *table;
218 table = table_map(address, 0, sizeof(ACPI_TABLE_HEADER));
221 printf("ACPI: Failed to map table at 0x%jx\n",
226 printf("Table '%.4s' at 0x%jx\n", table->Signature,
229 if (strncmp(table->Signature, sig, ACPI_NAME_SIZE) != 0) {
230 table_unmap(table, sizeof(ACPI_TABLE_HEADER));
233 table_unmap(table, sizeof(ACPI_TABLE_HEADER));
238 * Try to map a table at a given physical address previously returned
239 * by acpi_find_table().
242 acpi_map_table(vm_paddr_t pa, const char *sig)
245 return (map_table(pa, 0, sig));
248 /* Unmap a table previously mapped via acpi_map_table(). */
250 acpi_unmap_table(void *table)
252 ACPI_TABLE_HEADER *header;
254 header = (ACPI_TABLE_HEADER *)table;
255 table_unmap(table, header->Length);
259 * Return the physical address of the requested table or zero if one
263 acpi_find_table(const char *sig)
265 ACPI_PHYSICAL_ADDRESS rsdp_ptr;
266 ACPI_TABLE_RSDP *rsdp;
267 ACPI_TABLE_RSDT *rsdt;
268 ACPI_TABLE_XSDT *xsdt;
269 ACPI_TABLE_HEADER *table;
273 if (resource_disabled("acpi", 0))
277 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
278 * calls pmap_mapbios() to find the RSDP, we assume that we can use
279 * pmap_mapbios() to map the RSDP.
281 if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
283 rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
286 printf("ACPI: Failed to map RSDP\n");
291 * For ACPI >= 2.0, use the XSDT if it is available.
292 * Otherwise, use the RSDT. We map the XSDT or RSDT at page 2
293 * in the crashdump area. Pages 0 and 1 are used to map in the
294 * headers of candidate ACPI tables.
297 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
299 * AcpiOsGetRootPointer only verifies the checksum for
300 * the version 1.0 portion of the RSDP. Version 2.0 has
301 * an additional checksum that we verify first.
303 if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
305 printf("ACPI: RSDP failed extended checksum\n");
308 xsdt = map_table(rsdp->XsdtPhysicalAddress, 2, ACPI_SIG_XSDT);
311 printf("ACPI: Failed to map XSDT\n");
314 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
316 for (i = 0; i < count; i++)
317 if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
318 addr = xsdt->TableOffsetEntry[i];
321 acpi_unmap_table(xsdt);
323 rsdt = map_table(rsdp->RsdtPhysicalAddress, 2, ACPI_SIG_RSDT);
326 printf("ACPI: Failed to map RSDT\n");
329 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
331 for (i = 0; i < count; i++)
332 if (probe_table(rsdt->TableOffsetEntry[i], sig)) {
333 addr = rsdt->TableOffsetEntry[i];
336 acpi_unmap_table(rsdt);
338 pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));
341 printf("ACPI: No %s table found\n", sig);
345 printf("%s: Found table at 0x%jx\n", sig, (uintmax_t)addr);
348 * Verify that we can map the full table and that its checksum is
351 table = map_table(addr, 0, sig);
354 acpi_unmap_table(table);
360 * ACPI nexus(4) driver.
363 nexus_acpi_probe(device_t dev)
367 error = acpi_identify();
371 return (BUS_PROBE_DEFAULT);
375 nexus_acpi_attach(device_t dev)
378 nexus_init_resources();
379 bus_generic_probe(dev);
380 if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL)
381 panic("failed to add acpi0 device");
383 return (bus_generic_attach(dev));
386 static device_method_t nexus_acpi_methods[] = {
387 /* Device interface */
388 DEVMETHOD(device_probe, nexus_acpi_probe),
389 DEVMETHOD(device_attach, nexus_acpi_attach),
394 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver);
395 static devclass_t nexus_devclass;
397 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, nexus_devclass, 0, 0);