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 uint32_t acpi_resume_beep;
48 TUNABLE_INT("debug.acpi.resume_beep", &acpi_resume_beep);
49 SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RW, &acpi_resume_beep,
50 0, "Beep the PC speaker when resuming");
52 uint32_t acpi_reset_video;
53 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video);
55 static int intr_model = ACPI_INTR_PIC;
58 acpi_machdep_init(device_t dev)
60 struct acpi_softc *sc;
62 sc = device_get_softc(dev);
65 acpi_install_wakeup_handler(sc);
67 if (intr_model == ACPI_INTR_PIC)
68 BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt,
69 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW);
71 acpi_SetIntrModel(intr_model);
73 SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx,
74 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO,
75 "reset_video", CTLFLAG_RW, &acpi_reset_video, 0,
76 "Call the VESA reset BIOS vector on the resume path");
82 acpi_SetDefaultIntrModel(int model)
88 /* Check BIOS date. If 1998 or older, disable ACPI. */
90 acpi_machdep_quirks(int *quirks)
95 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */
96 va = pmap_mapbios(0xffff0, 16);
97 sscanf(va + 11, "%2d", &year);
98 pmap_unmapbios((vm_offset_t)va, 16);
101 * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this
102 * check must be changed by my 114th birthday.
104 if (year > 90 && year < 99)
105 *quirks = ACPI_Q_BROKEN;
114 __asm __volatile("sti; hlt");
118 * Support for mapping ACPI tables during early boot. This abuses the
119 * crashdump map because the kernel cannot allocate KVA in
120 * pmap_mapbios() when this is used. This makes the following
121 * assumptions about how we use this KVA: pages 0 and 1 are used to
122 * map in the header of each table found via the RSDT or XSDT and
123 * pages 2 to n are used to map in the RSDT or XSDT. This has to use
124 * 2 pages for the table headers in case a header spans a page
127 * XXX: We don't ensure the table fits in the available address space
128 * in the crashdump map.
132 * Map some memory using the crashdump map. 'offset' is an offset in
133 * pages into the crashdump map to use for the start of the mapping.
136 table_map(vm_paddr_t pa, int offset, vm_offset_t length)
141 off = pa & PAGE_MASK;
142 length = roundup(length + off, PAGE_SIZE);
144 va = (vm_offset_t)pmap_kenter_temporary(pa, offset) +
145 (offset * PAGE_SIZE);
146 data = (void *)(va + off);
158 /* Unmap memory previously mapped with table_map(). */
160 table_unmap(void *data, vm_offset_t length)
164 va = (vm_offset_t)data;
165 off = va & PAGE_MASK;
166 length = roundup(length + off, PAGE_SIZE);
177 * Map a table at a given offset into the crashdump map. It first
178 * maps the header to determine the table length and then maps the
182 map_table(vm_paddr_t pa, int offset, const char *sig)
184 ACPI_TABLE_HEADER *header;
188 header = table_map(pa, offset, sizeof(ACPI_TABLE_HEADER));
189 if (strncmp(header->Signature, sig, ACPI_NAME_SIZE) != 0) {
190 table_unmap(header, sizeof(ACPI_TABLE_HEADER));
193 length = header->Length;
194 table_unmap(header, sizeof(ACPI_TABLE_HEADER));
195 table = table_map(pa, offset, length);
196 if (ACPI_FAILURE(AcpiTbChecksum(table, length))) {
198 printf("ACPI: Failed checksum for table %s\n", sig);
199 #if (ACPI_CHECKSUM_ABORT)
200 table_unmap(table, length);
208 * See if a given ACPI table is the requested table. Returns the
209 * length of the able if it matches or zero on failure.
212 probe_table(vm_paddr_t address, const char *sig)
214 ACPI_TABLE_HEADER *table;
216 table = table_map(address, 0, sizeof(ACPI_TABLE_HEADER));
219 printf("ACPI: Failed to map table at 0x%jx\n",
224 printf("Table '%.4s' at 0x%jx\n", table->Signature,
227 if (strncmp(table->Signature, sig, ACPI_NAME_SIZE) != 0) {
228 table_unmap(table, sizeof(ACPI_TABLE_HEADER));
231 table_unmap(table, sizeof(ACPI_TABLE_HEADER));
236 * Try to map a table at a given physical address previously returned
237 * by acpi_find_table().
240 acpi_map_table(vm_paddr_t pa, const char *sig)
243 return (map_table(pa, 0, sig));
246 /* Unmap a table previously mapped via acpi_map_table(). */
248 acpi_unmap_table(void *table)
250 ACPI_TABLE_HEADER *header;
252 header = (ACPI_TABLE_HEADER *)table;
253 table_unmap(table, header->Length);
257 * Return the physical address of the requested table or zero if one
261 acpi_find_table(const char *sig)
263 ACPI_PHYSICAL_ADDRESS rsdp_ptr;
264 ACPI_TABLE_RSDP *rsdp;
265 ACPI_TABLE_RSDT *rsdt;
266 ACPI_TABLE_XSDT *xsdt;
267 ACPI_TABLE_HEADER *table;
271 if (resource_disabled("acpi", 0))
275 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn
276 * calls pmap_mapbios() to find the RSDP, we assume that we can use
277 * pmap_mapbios() to map the RSDP.
279 if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0)
281 rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP));
284 printf("ACPI: Failed to map RSDP\n");
289 * For ACPI >= 2.0, use the XSDT if it is available.
290 * Otherwise, use the RSDT. We map the XSDT or RSDT at page 2
291 * in the crashdump area. Pages 0 and 1 are used to map in the
292 * headers of candidate ACPI tables.
295 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) {
297 * AcpiOsGetRootPointer only verifies the checksum for
298 * the version 1.0 portion of the RSDP. Version 2.0 has
299 * an additional checksum that we verify first.
301 if (AcpiTbChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) {
303 printf("ACPI: RSDP failed extended checksum\n");
306 xsdt = map_table(rsdp->XsdtPhysicalAddress, 2, ACPI_SIG_XSDT);
309 printf("ACPI: Failed to map XSDT\n");
312 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
314 for (i = 0; i < count; i++)
315 if (probe_table(xsdt->TableOffsetEntry[i], sig)) {
316 addr = xsdt->TableOffsetEntry[i];
319 acpi_unmap_table(xsdt);
321 rsdt = map_table(rsdp->RsdtPhysicalAddress, 2, ACPI_SIG_RSDT);
324 printf("ACPI: Failed to map RSDT\n");
327 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) /
329 for (i = 0; i < count; i++)
330 if (probe_table(rsdt->TableOffsetEntry[i], sig)) {
331 addr = rsdt->TableOffsetEntry[i];
334 acpi_unmap_table(rsdt);
336 pmap_unmapbios((vm_offset_t)rsdp, sizeof(ACPI_TABLE_RSDP));
339 printf("ACPI: No %s table found\n", sig);
343 printf("%s: Found table at 0x%jx\n", sig, (uintmax_t)addr);
346 * Verify that we can map the full table and that its checksum is
349 table = map_table(addr, 0, sig);
352 acpi_unmap_table(table);
358 * ACPI nexus(4) driver.
361 nexus_acpi_probe(device_t dev)
365 error = acpi_identify();
369 return (BUS_PROBE_DEFAULT);
373 nexus_acpi_attach(device_t dev)
376 nexus_init_resources();
377 bus_generic_probe(dev);
378 if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL)
379 panic("failed to add acpi0 device");
381 return (bus_generic_attach(dev));
384 static device_method_t nexus_acpi_methods[] = {
385 /* Device interface */
386 DEVMETHOD(device_probe, nexus_acpi_probe),
387 DEVMETHOD(device_attach, nexus_acpi_attach),
392 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver);
393 static devclass_t nexus_devclass;
395 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, nexus_devclass, 0, 0);