acpi_fdt.c revision 1.12
1 /* $NetBSD: acpi_fdt.c,v 1.12 2019/06/22 19:47:27 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2015-2017 Jared McNeill <jmcneill (at) 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 1.12 2019/06/22 19:47:27 jmcneill 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 #include <sys/sysctl.h> 45 46 #include <dev/fdt/fdtvar.h> 47 48 #include <dev/acpi/acpivar.h> 49 #include <dev/pci/pcivar.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 #include <dev/clock_subr.h> 58 #endif 59 60 static int acpi_fdt_match(device_t, cfdata_t, void *); 61 static void acpi_fdt_attach(device_t, device_t, void *); 62 63 static void acpi_fdt_poweroff(device_t); 64 65 #ifdef EFI_RUNTIME 66 static void acpi_fdt_efi_init(device_t); 67 static int acpi_fdt_efi_rtc_gettime(todr_chip_handle_t, struct clock_ymdhms *); 68 static int acpi_fdt_efi_rtc_settime(todr_chip_handle_t, struct clock_ymdhms *); 69 #endif 70 71 static void acpi_fdt_sysctl_init(void); 72 73 extern struct arm32_bus_dma_tag acpi_coherent_dma_tag; 74 75 #if NPCI > 0 76 static struct acpi_pci_context acpi_fdt_pci_context; 77 #endif 78 79 static uint64_t smbios_table = 0; 80 81 #ifdef EFI_RUNTIME 82 static struct todr_chip_handle efi_todr; 83 #endif 84 85 static const char * const compatible[] = { 86 "netbsd,acpi", 87 NULL 88 }; 89 90 static const struct fdtbus_power_controller_func acpi_fdt_power_funcs = { 91 .poweroff = acpi_fdt_poweroff, 92 }; 93 94 CFATTACH_DECL_NEW(acpi_fdt, 0, acpi_fdt_match, acpi_fdt_attach, NULL, NULL); 95 96 static int 97 acpi_fdt_match(device_t parent, cfdata_t cf, void *aux) 98 { 99 struct fdt_attach_args * const faa = aux; 100 101 return of_compatible(faa->faa_phandle, compatible) >= 0; 102 } 103 104 static void 105 acpi_fdt_attach(device_t parent, device_t self, void *aux) 106 { 107 struct fdt_attach_args * const faa = aux; 108 struct acpibus_attach_args aa; 109 110 aprint_naive("\n"); 111 aprint_normal("\n"); 112 113 #ifdef EFI_RUNTIME 114 acpi_fdt_efi_init(self); 115 #endif 116 117 fdtbus_register_power_controller(self, faa->faa_phandle, 118 &acpi_fdt_power_funcs); 119 120 if (!acpi_probe()) 121 aprint_error_dev(self, "failed to probe ACPI\n"); 122 123 memset(&aa, 0, sizeof(aa)); 124 #if NPCI > 0 125 acpi_fdt_pci_context.ap_pc = arm_acpi_pci_chipset; 126 acpi_fdt_pci_context.ap_pc.pc_conf_v = &acpi_fdt_pci_context; 127 acpi_fdt_pci_context.ap_seg = 0; 128 aa.aa_pciflags = 129 /*PCI_FLAGS_IO_OKAY |*/ PCI_FLAGS_MEM_OKAY | 130 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | 131 PCI_FLAGS_MWI_OKAY; 132 #ifdef __HAVE_PCI_MSI_MSIX 133 aa.aa_pciflags |= PCI_FLAGS_MSI_OKAY | PCI_FLAGS_MSIX_OKAY; 134 #endif 135 aa.aa_pc = &acpi_fdt_pci_context.ap_pc; 136 #endif 137 138 aa.aa_memt = faa->faa_bst; 139 aa.aa_dmat = &acpi_coherent_dma_tag; 140 #ifdef _PCI_HAVE_DMA64 141 aa.aa_dmat64 = &acpi_coherent_dma_tag; 142 #endif 143 config_found_ia(self, "acpibus", &aa, 0); 144 145 acpi_fdt_sysctl_init(); 146 } 147 148 static void 149 acpi_fdt_poweroff(device_t dev) 150 { 151 delay(500000); 152 #ifdef EFI_RUNTIME 153 if (arm_efirt_reset(EFI_RESET_SHUTDOWN) == 0) 154 return; 155 #endif 156 if (psci_available()) 157 psci_system_off(); 158 } 159 160 static void 161 acpi_fdt_sysctl_init(void) 162 { 163 const struct sysctlnode *rnode; 164 int error; 165 166 const int chosen = OF_finddevice("/chosen"); 167 if (chosen >= 0) 168 of_getprop_uint64(chosen, "netbsd,smbios-table", &smbios_table); 169 170 error = sysctl_createv(NULL, 0, NULL, &rnode, 171 CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", NULL, 172 NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL); 173 if (error) 174 return; 175 176 if (smbios_table != 0) { 177 (void)sysctl_createv(NULL, 0, &rnode, NULL, 178 CTLFLAG_PERMANENT | CTLFLAG_READONLY | CTLFLAG_HEX, CTLTYPE_QUAD, 179 "smbios", SYSCTL_DESCR("SMBIOS table pointer"), 180 NULL, 0, &smbios_table, sizeof(smbios_table), 181 CTL_CREATE, CTL_EOL); 182 } 183 } 184 185 #ifdef EFI_RUNTIME 186 static void 187 acpi_fdt_efi_init(device_t dev) 188 { 189 uint64_t efi_system_table; 190 struct efi_tm tm; 191 int error; 192 193 const int chosen = OF_finddevice("/chosen"); 194 if (chosen < 0) 195 return; 196 197 if (of_getprop_uint64(chosen, "netbsd,uefi-system-table", &efi_system_table) != 0) 198 return; 199 200 error = arm_efirt_init(efi_system_table); 201 if (error) 202 return; 203 204 aprint_debug_dev(dev, "EFI system table at %#" PRIx64 "\n", efi_system_table); 205 206 if (arm_efirt_gettime(&tm) == 0) { 207 aprint_normal_dev(dev, "using EFI runtime services for RTC\n"); 208 efi_todr.cookie = NULL; 209 efi_todr.todr_gettime_ymdhms = acpi_fdt_efi_rtc_gettime; 210 efi_todr.todr_settime_ymdhms = acpi_fdt_efi_rtc_settime; 211 todr_attach(&efi_todr); 212 } 213 } 214 215 static int 216 acpi_fdt_efi_rtc_gettime(todr_chip_handle_t tch, struct clock_ymdhms *dt) 217 { 218 struct efi_tm tm; 219 int error; 220 221 error = arm_efirt_gettime(&tm); 222 if (error) 223 return error; 224 225 dt->dt_year = tm.tm_year; 226 dt->dt_mon = tm.tm_mon; 227 dt->dt_day = tm.tm_mday; 228 dt->dt_wday = 0; 229 dt->dt_hour = tm.tm_hour; 230 dt->dt_min = tm.tm_min; 231 dt->dt_sec = tm.tm_sec; 232 233 return 0; 234 } 235 236 static int 237 acpi_fdt_efi_rtc_settime(todr_chip_handle_t tch, struct clock_ymdhms *dt) 238 { 239 struct efi_tm tm; 240 241 memset(&tm, 0, sizeof(tm)); 242 tm.tm_year = dt->dt_year; 243 tm.tm_mon = dt->dt_mon; 244 tm.tm_mday = dt->dt_day; 245 tm.tm_hour = dt->dt_hour; 246 tm.tm_min = dt->dt_min; 247 tm.tm_sec = dt->dt_sec; 248 249 return arm_efirt_settime(&tm); 250 } 251 #endif 252
Indexes created Wed Sep 24 05:09:52 GMT 2025