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 int acpi_resume_beep; 47 SYSCTL_INT(_debug_acpi, OID_AUTO, resume_beep, CTLFLAG_RWTUN, 48 &acpi_resume_beep, 0, "Beep the PC speaker when resuming"); 49 50 int 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 acpi_SetIntrModel(intr_model); 67 68 SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, 69 SYSCTL_CHILDREN(sc->acpi_sysctl_tree), OID_AUTO, 70 "reset_video", CTLFLAG_RW, &acpi_reset_video, 0, 71 "Call the VESA reset BIOS vector on the resume path"); 72 73 return (0); 74 } 75 76 void 77 acpi_SetDefaultIntrModel(int model) 78 { 79 80 intr_model = model; 81 } 82 83 int 84 acpi_machdep_quirks(int *quirks) 85 { 86 87 return (0); 88 } 89 90 /* 91 * Map a table. First map the header to determine the table length and then map 92 * the entire table. 93 */ 94 static void * 95 map_table(vm_paddr_t pa, const char *sig) 96 { 97 ACPI_TABLE_HEADER *header; 98 vm_size_t length; 99 void *table; 100 101 header = pmap_mapbios(pa, sizeof(ACPI_TABLE_HEADER)); 102 if (strncmp(header->Signature, sig, ACPI_NAMESEG_SIZE) != 0) { 103 pmap_unmapbios(header, sizeof(ACPI_TABLE_HEADER)); 104 return (NULL); 105 } 106 length = header->Length; 107 pmap_unmapbios(header, sizeof(ACPI_TABLE_HEADER)); 108 table = pmap_mapbios(pa, length); 109 if (ACPI_FAILURE(AcpiUtChecksum(table, length))) { 110 if (bootverbose) 111 printf("ACPI: Failed checksum for table %s\n", sig); 112 #if (ACPI_CHECKSUM_ABORT) 113 pmap_unmapbios(table, length); 114 return (NULL); 115 #endif 116 } 117 return (table); 118 } 119 120 /* 121 * See if a given ACPI table is the requested table. Returns the 122 * length of the table if it matches or zero on failure. 123 */ 124 static int 125 probe_table(vm_paddr_t address, const char *sig) 126 { 127 ACPI_TABLE_HEADER *table; 128 int ret; 129 130 table = pmap_mapbios(address, sizeof(ACPI_TABLE_HEADER)); 131 ret = strncmp(table->Signature, sig, ACPI_NAMESEG_SIZE) == 0; 132 pmap_unmapbios(table, sizeof(ACPI_TABLE_HEADER)); 133 return (ret); 134 } 135 136 /* 137 * Try to map a table at a given physical address previously returned 138 * by acpi_find_table(). 139 */ 140 void * 141 acpi_map_table(vm_paddr_t pa, const char *sig) 142 { 143 144 return (map_table(pa, sig)); 145 } 146 147 /* Unmap a table previously mapped via acpi_map_table(). */ 148 void 149 acpi_unmap_table(void *table) 150 { 151 ACPI_TABLE_HEADER *header; 152 153 header = (ACPI_TABLE_HEADER *)table; 154 pmap_unmapbios(table, header->Length); 155 } 156 157 /* 158 * Return the physical address of the requested table or zero if one 159 * is not found. 160 */ 161 vm_paddr_t 162 acpi_find_table(const char *sig) 163 { 164 ACPI_PHYSICAL_ADDRESS rsdp_ptr; 165 ACPI_TABLE_RSDP *rsdp; 166 ACPI_TABLE_RSDT *rsdt; 167 ACPI_TABLE_XSDT *xsdt; 168 ACPI_TABLE_HEADER *table; 169 vm_paddr_t addr; 170 int i, count; 171 172 if (resource_disabled("acpi", 0)) 173 return (0); 174 175 /* 176 * Map in the RSDP. Since ACPI uses AcpiOsMapMemory() which in turn 177 * calls pmap_mapbios() to find the RSDP, we assume that we can use 178 * pmap_mapbios() to map the RSDP. 179 */ 180 if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0) 181 return (0); 182 rsdp = pmap_mapbios(rsdp_ptr, sizeof(ACPI_TABLE_RSDP)); 183 if (rsdp == NULL) { 184 printf("ACPI: Failed to map RSDP\n"); 185 return (0); 186 } 187 188 /* 189 * For ACPI >= 2.0, use the XSDT if it is available. 190 * Otherwise, use the RSDT. 191 */ 192 addr = 0; 193 if (rsdp->Revision >= 2 && rsdp->XsdtPhysicalAddress != 0) { 194 /* 195 * AcpiOsGetRootPointer only verifies the checksum for 196 * the version 1.0 portion of the RSDP. Version 2.0 has 197 * an additional checksum that we verify first. 198 */ 199 if (AcpiUtChecksum((UINT8 *)rsdp, ACPI_RSDP_XCHECKSUM_LENGTH)) { 200 printf("ACPI: RSDP failed extended checksum\n"); 201 pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP)); 202 return (0); 203 } 204 xsdt = map_table(rsdp->XsdtPhysicalAddress, ACPI_SIG_XSDT); 205 if (xsdt == NULL) { 206 printf("ACPI: Failed to map XSDT\n"); 207 pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP)); 208 return (0); 209 } 210 count = (xsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / 211 sizeof(UINT64); 212 for (i = 0; i < count; i++) 213 if (probe_table(xsdt->TableOffsetEntry[i], sig)) { 214 addr = xsdt->TableOffsetEntry[i]; 215 break; 216 } 217 acpi_unmap_table(xsdt); 218 } else { 219 rsdt = map_table(rsdp->RsdtPhysicalAddress, ACPI_SIG_RSDT); 220 if (rsdt == NULL) { 221 printf("ACPI: Failed to map RSDT\n"); 222 pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP)); 223 return (0); 224 } 225 count = (rsdt->Header.Length - sizeof(ACPI_TABLE_HEADER)) / 226 sizeof(UINT32); 227 for (i = 0; i < count; i++) 228 if (probe_table(rsdt->TableOffsetEntry[i], sig)) { 229 addr = rsdt->TableOffsetEntry[i]; 230 break; 231 } 232 acpi_unmap_table(rsdt); 233 } 234 pmap_unmapbios(rsdp, sizeof(ACPI_TABLE_RSDP)); 235 if (addr == 0) 236 return (0); 237 238 /* 239 * Verify that we can map the full table and that its checksum is 240 * correct, etc. 241 */ 242 table = map_table(addr, sig); 243 if (table == NULL) 244 return (0); 245 acpi_unmap_table(table); 246 247 return (addr); 248 } 249 250 /* 251 * ACPI nexus(4) driver. 252 */ 253 static int 254 nexus_acpi_probe(device_t dev) 255 { 256 int error; 257 258 error = acpi_identify(); 259 if (error) 260 return (error); 261 device_quiet(dev); 262 return (BUS_PROBE_DEFAULT); 263 } 264 265 static int 266 nexus_acpi_attach(device_t dev) 267 { 268 269 nexus_init_resources(); 270 bus_generic_probe(dev); 271 if (BUS_ADD_CHILD(dev, 10, "acpi", 0) == NULL) 272 panic("failed to add acpi0 device"); 273 274 return (bus_generic_attach(dev)); 275 } 276 277 static device_method_t nexus_acpi_methods[] = { 278 /* Device interface */ 279 DEVMETHOD(device_probe, nexus_acpi_probe), 280 DEVMETHOD(device_attach, nexus_acpi_attach), 281 { 0, 0 } 282 }; 283 284 DEFINE_CLASS_1(nexus, nexus_acpi_driver, nexus_acpi_methods, 1, nexus_driver); 285 286 DRIVER_MODULE(nexus_acpi, root, nexus_acpi_driver, 0, 0); 287