1 /* $NetBSD: acpi_fdt.c,v 1.24 2022/11/25 22:17:20 mrg Exp $ */ 2 3 /*- 4 * Copyright (c) 2015-2017 Jared McNeill <jmcneill@invisible.ca> 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 ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * 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 "pci.h" 30 #include "opt_efi.h" 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: acpi_fdt.c,v 1.24 2022/11/25 22:17:20 mrg Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/device.h> 38 #include <sys/intr.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/lwp.h> 42 #include <sys/kmem.h> 43 #include <sys/queue.h> 44 45 #include <dev/fdt/fdtvar.h> 46 47 #include <dev/acpi/acpivar.h> 48 #include <dev/pci/pcivar.h> 49 #include <dev/smbiosvar.h> 50 51 #include <arm/arm/psci.h> 52 53 #include <arm/acpi/acpi_pci_machdep.h> 54 55 #ifdef EFI_RUNTIME 56 #include <arm/arm/efi_runtime.h> 57 #endif 58 59 static int acpi_fdt_match(device_t, cfdata_t, void *); 60 static void acpi_fdt_attach(device_t, device_t, void *); 61 62 static void acpi_fdt_poweroff(device_t); 63 64 static void acpi_fdt_smbios_init(device_t); 65 66 extern struct arm32_bus_dma_tag acpi_coherent_dma_tag; 67 68 static uint64_t smbios_table = 0; 69 70 static const struct device_compatible_entry compat_data[] = { 71 { .compat = "netbsd,acpi" }, 72 DEVICE_COMPAT_EOL 73 }; 74 75 static const struct fdtbus_power_controller_func acpi_fdt_power_funcs = { 76 .poweroff = acpi_fdt_poweroff, 77 }; 78 79 CFATTACH_DECL_NEW(acpi_fdt, 0, acpi_fdt_match, acpi_fdt_attach, NULL, NULL); 80 81 static int 82 acpi_fdt_match(device_t parent, cfdata_t cf, void *aux) 83 { 84 struct fdt_attach_args * const faa = aux; 85 86 return of_compatible_match(faa->faa_phandle, compat_data); 87 } 88 89 static void 90 acpi_fdt_attach(device_t parent, device_t self, void *aux) 91 { 92 extern void platform_init(void); /* XXX */ 93 struct fdt_attach_args * const faa = aux; 94 struct acpibus_attach_args aa; 95 96 aprint_naive("\n"); 97 aprint_normal("\n"); 98 99 acpi_fdt_smbios_init(self); 100 platform_init(); 101 102 fdtbus_register_power_controller(self, faa->faa_phandle, 103 &acpi_fdt_power_funcs); 104 105 if (!acpi_probe()) 106 panic("ACPI subsystem failed to initialize"); 107 108 platform_init(); 109 110 memset(&aa, 0, sizeof(aa)); 111 #if NPCI > 0 112 aa.aa_pciflags = 113 /*PCI_FLAGS_IO_OKAY |*/ PCI_FLAGS_MEM_OKAY | 114 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | 115 PCI_FLAGS_MWI_OKAY; 116 #ifdef __HAVE_PCI_MSI_MSIX 117 aa.aa_pciflags |= PCI_FLAGS_MSI_OKAY | PCI_FLAGS_MSIX_OKAY; 118 #endif 119 #endif 120 121 aa.aa_memt = faa->faa_bst; 122 aa.aa_dmat = NULL; 123 aa.aa_dmat64 = NULL; 124 config_found(self, &aa, NULL, CFARGS_NONE); 125 } 126 127 static void 128 acpi_fdt_poweroff(device_t dev) 129 { 130 delay(500000); 131 #ifdef EFI_RUNTIME 132 if (arm_efirt_reset(EFI_RESET_SHUTDOWN) == 0) 133 return; 134 #endif 135 if (psci_available()) 136 psci_system_off(); 137 } 138 139 static int 140 acpi_fdt_smbios_version(void) 141 { 142 uint8_t *hdr; 143 int smbver; 144 145 if (smbios_table == 0) { 146 return 0; 147 } 148 149 hdr = AcpiOsMapMemory(smbios_table, 24); 150 if (hdr == NULL) { 151 return 0; 152 } 153 if (smbios3_check_header(hdr)) { 154 smbver = 3; 155 } else if (smbios2_check_header(hdr)) { 156 smbver = 2; 157 } else { 158 smbver = 0; 159 } 160 AcpiOsUnmapMemory(hdr, 24); 161 return smbver; 162 } 163 164 static void 165 acpi_fdt_smbios_init(device_t dev) 166 { 167 uint8_t *ptr; 168 int smbver; 169 170 const int chosen = OF_finddevice("/chosen"); 171 if (chosen >= 0) { 172 of_getprop_uint64(chosen, "netbsd,smbios-table", &smbios_table); 173 } 174 if (smbios_table == 0) { 175 return; 176 } 177 178 smbios_entry.hdrphys = smbios_table; 179 180 smbver = acpi_fdt_smbios_version(); 181 if (smbver == 3) { 182 struct smb3hdr *sh = AcpiOsMapMemory(smbios_table, sizeof(*sh)); 183 if (sh == NULL) { 184 return; 185 } 186 187 ptr = AcpiOsMapMemory(sh->addr, sh->size); 188 if (ptr != NULL) { 189 smbios_entry.tabphys = sh->addr; 190 smbios_entry.addr = ptr; 191 smbios_entry.len = sh->size; 192 smbios_entry.rev = sh->eprev; 193 smbios_entry.mjr = sh->majrev; 194 smbios_entry.min = sh->minrev; 195 smbios_entry.doc = sh->docrev; 196 smbios_entry.count = UINT16_MAX; 197 } 198 199 aprint_normal_dev(dev, "SMBIOS rev. %d.%d.%d @ 0x%lx\n", 200 sh->majrev, sh->minrev, sh->docrev, (u_long)sh->addr); 201 AcpiOsUnmapMemory(sh, sizeof(*sh)); 202 } else if (smbver == 2) { 203 struct smbhdr *sh = AcpiOsMapMemory(smbios_table, sizeof(*sh)); 204 if (sh == NULL) { 205 return; 206 } 207 208 ptr = AcpiOsMapMemory(sh->addr, sh->size); 209 if (ptr != NULL) { 210 smbios_entry.tabphys = sh->addr; 211 smbios_entry.addr = ptr; 212 smbios_entry.len = sh->size; 213 smbios_entry.rev = 0; 214 smbios_entry.mjr = sh->majrev; 215 smbios_entry.min = sh->minrev; 216 smbios_entry.doc = 0; 217 smbios_entry.count = sh->count; 218 } 219 220 aprint_normal_dev(dev, "SMBIOS rev. %d.%d @ 0x%lx (%d entries)\n", 221 sh->majrev, sh->minrev, (u_long)sh->addr, sh->count); 222 AcpiOsUnmapMemory(sh, sizeof(*sh)); 223 } 224 } 225