1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001 Mitsuru IWASAKI 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. 15 * 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 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/bus.h> 31 #include <sys/kernel.h> 32 #include <sys/module.h> 33 #include <sys/sysctl.h> 34 35 #include <vm/vm.h> 36 #include <vm/pmap.h> 37 38 #include <contrib/dev/acpica/include/acpi.h> 39 #include <contrib/dev/acpica/include/accommon.h> 40 #include <contrib/dev/acpica/include/actables.h> 41 42 #include <dev/acpica/acpivar.h> 43 44 #include <machine/nexusvar.h> 45 46 uint32_t acpi_resume_beep; 47 SYSCTL_UINT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RWTUN, &acpi_resume_beep, 48 0, "Beep the PC speaker when resuming"); 49 50 uint32_t acpi_reset_video; 51 TUNABLE_INT("hw.acpi.reset_video", &acpi_reset_video); 52 53 static int intr_model = ACPI_INTR_PIC; 54 55 int 56 acpi_machdep_init(device_t dev) 57 { 58 struct acpi_softc *sc; 59 60 sc = device_get_softc(dev); 61 62 acpi_apm_init(sc); 63 acpi_install_wakeup_handler(sc); 64 65 if (intr_model == ACPI_INTR_PIC) 66 BUS_CONFIG_INTR(dev, AcpiGbl_FADT.SciInterrupt, 67 INTR_TRIGGER_LEVEL, INTR_POLARITY_LOW); 68 else 69 acpi_SetIntrModel(intr_model); 70 71 SYSCTL_ADD_UINT(&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"); 75 76 return (0); 77 } 78 79 void 80 acpi_SetDefaultIntrModel(int model) 81 { 82 83 intr_model = model; 84 } 85 86 /* Check BIOS date. If 1998 or older, disable ACPI. */ 87 int 88 acpi_machdep_quirks(int *quirks) 89 { 90 char *va; 91 int year; 92 93 /* BIOS address 0xffff5 contains the date in the format mm/dd/yy. */ 94 va = pmap_mapbios(0xffff0, 16); 95 sscanf(va + 11, "%2d", &year); 96 pmap_unmapbios(va, 16); 97 98 /* 99 * Date must be >= 1/1/1999 or we don't trust ACPI. Note that this 100 * check must be changed by my 114th birthday. 101 */ 102 if (year > 90 && year < 99) 103 *quirks = ACPI_Q_BROKEN; 104 105 return (0); 106 } 107 108 /* 109 * Map a table. First map the header to determine the table length and then map 110 * the entire table. 111 */ 112 static void * 113 map_table(vm_paddr_t pa, const char *sig) 114 { 115 ACPI_TABLE_HEADER *header; 116 vm_size_t length; 117 void *table; 118 119 header = pmap_mapbios(pa, sizeof(ACPI_TABLE_HEADER)); 120 if (strncmp(header->Signature, sig, ACPI_NAMESEG_SIZE) != 0) { 121 pmap_unmapbios(header, sizeof(ACPI_TABLE_HEADER)); 122 return (NULL); 123 } 124 length = header->Length; 125 pmap_unmapbios(header, sizeof(ACPI_TABLE_HEADER)); 126 table = pmap_mapbios(pa, length); 127 if (ACPI_FAILURE(AcpiUtChecksum(table, length))) { 128 if (bootverbose) 129 printf("ACPI: Failed checksum for table %s\n", sig); 130 #if (ACPI_CHECKSUM_ABORT) 131 pmap_unmapbios(table, length); 132 return (NULL); 133 #endif 134 } 135 return (table); 136 } 137 138 /* 139 * See if a given ACPI table is the requested table. Returns the 140 * length of the table if it matches or zero on failure. 141 */ 142 static int 143 probe_table(vm_paddr_t address, const char *sig) 144 { 145 ACPI_TABLE_HEADER *table; 146 int ret; 147 148 table = pmap_mapbios(address, sizeof(ACPI_TABLE_HEADER)); 149 ret = strncmp(table->Signature, sig, ACPI_NAMESEG_SIZE) == 0; 150 pmap_unmapbios(table, sizeof(ACPI_TABLE_HEADER)); 151 return (ret); 152 } 153 154 /* 155 * Try to map a table at a given physical address previously returned 156 * by acpi_find_table(). 157 */ 158 void * 159 acpi_map_table(vm_paddr_t pa, const char *sig) 160 { 161 162 return (map_table(pa, sig)); 163 } 164 165 /* Unmap a table previously mapped via acpi_map_table(). */ 166 void 167 acpi_unmap_table(void *table) 168 { 169 ACPI_TABLE_HEADER *header; 170 171 header = (ACPI_TABLE_HEADER *)table; 172 pmap_unmapbios(table, header->Length); 173 } 174 175 /* 176 * Return the physical address of the requested table or zero if one 177 * is not found. 178 */ 179 vm_paddr_t 180 acpi_find_table(const char *sig) 181 { 182 ACPI_PHYSICAL_ADDRESS rsdp_ptr; 183 ACPI_TABLE_RSDP *rsdp; 184 ACPI_TABLE_RSDT *rsdt; 185 ACPI_TABLE_XSDT *xsdt; 186 ACPI_TABLE_HEADER *table; 187 vm_paddr_t addr; 188 int i, count; 189 190 if (resource_disabled("acpi", 0)) 191 return (0); 192 193 /* 194 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn 195 * calls pmap_mapbios() to find the RSDP, we assume that we can use 196 * pmap_mapbios() to map the RSDP. 197 */ 198 if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0) 199 return (0); 200 rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP)); 201 if (rsdp == NULL) { 202 if (bootverbose) 203 printf("ACPI: Failed to map RSDP\n"); 204 return (0); 205 } 206 207 /* 208 * For ACPI >= 2.0, use the XSDT if it is available. 209 * Otherwise, use the RSDT. 210 */ 211 addr = 0; 212 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) { 213 /* 214 * AcpiOsGetRootPointer only verifies the checksum for 215 * the version 1.0 portion of the RSDP. Version 2.0 has 216 * an additional checksum that we verify first. 217 */ 218 if (AcpiUtChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) { 219 if (bootverbose) 220 printf("ACPI: RSDP failed extended checksum\n"); 221 return (0); 222 } 223 xsdt = map_table(rsdp->XsdtPhysicalAddress, ACPI_SIG_XSDT); 224 if (xsdt == NULL) { 225 if (bootverbose) 226 printf("ACPI: Failed to map XSDT\n"); 227 return (0); 228 } 229 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / 230 sizeof(UINT64); 231 for (i = 0; i < count; i++) 232 if (probe_table(xsdt->TableOffsetEntry[i], sig)) { 233 addr = xsdt->TableOffsetEntry[i]; 234 break; 235 } 236 acpi_unmap_table(xsdt); 237 } else { 238 rsdt = map_table(rsdp->RsdtPhysicalAddress, ACPI_SIG_RSDT); 239 if (rsdt == NULL) { 240 if (bootverbose) 241 printf("ACPI: Failed to map RSDT\n"); 242 return (0); 243 } 244 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / 245 sizeof(UINT32); 246 for (i = 0; i < count; i++) 247 if (probe_table(rsdt->TableOffsetEntry[i], sig)) { 248 addr = rsdt->TableOffsetEntry[i]; 249 break; 250 } 251 acpi_unmap_table(rsdt); 252 } 253 pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP)); 254 if (addr == 0) 255 return (0); 256 257 /* 258 * Verify that we can map the full table and that its checksum is 259 * correct, etc. 260 */ 261 table = map_table(addr, sig); 262 if (table == NULL) 263 return (0); 264 acpi_unmap_table(table); 265 266 return (addr); 267 } 268 269 /* 270 * ACPI nexus(4) driver. 271 */ 272 static int 273 nexus_acpi_probe(device_t dev) 274 { 275 int error; 276 277 error = acpi_identify(); 278 if (error) 279 return (error); 280 device_quiet(dev); 281 return (BUS_PROBE_DEFAULT); 282 } 283 284 static int 285 nexus_acpi_attach(device_t dev) 286 { 287 288 nexus_init_resources(); 289 bus_generic_probe(dev); 290 if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL) 291 panic("failed to add acpi0 device"); 292 293 return (bus_generic_attach(dev)); 294 } 295 296 static device_method_t nexus_acpi_methods[] = { 297 /* Device interface */ 298 DEVMETHOD(device_probe, nexus_acpi_probe), 299 DEVMETHOD(device_attach, nexus_acpi_attach), 300 { 0, 0 } 301 }; 302 303 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver); 304 305 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, 0, 0); 306