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acpi_fdt.c revision 1.19 
      1 /* $NetBSD: acpi_fdt.c,v 1.19 2021/04/24 23:36:26 thorpej 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 1.19 2021/04/24 23:36:26 thorpej 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 #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_sysctl_init(void);
     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 	struct fdt_attach_args * const faa = aux;
     93 	struct acpibus_attach_args aa;
     94 
     95 	aprint_naive("\n");
     96 	aprint_normal("\n");
     97 
     98 	fdtbus_register_power_controller(self, faa->faa_phandle,
     99 	    &acpi_fdt_power_funcs);
    100 
    101 	if (!acpi_probe())
    102 		panic("ACPI subsystem failed to initialize");
    103 
    104 	memset(&aa, 0, sizeof(aa));
    105 #if NPCI > 0
    106 	aa.aa_pciflags =
    107 	    /*PCI_FLAGS_IO_OKAY |*/ PCI_FLAGS_MEM_OKAY |
    108 	    PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
    109 	    PCI_FLAGS_MWI_OKAY;
    110 #ifdef __HAVE_PCI_MSI_MSIX
    111 	aa.aa_pciflags |= PCI_FLAGS_MSI_OKAY | PCI_FLAGS_MSIX_OKAY;
    112 #endif
    113 #endif
    114 
    115 	aa.aa_memt = faa->faa_bst;
    116 	aa.aa_dmat = NULL;
    117 	aa.aa_dmat64 = NULL;
    118 	config_found(self, &aa, NULL, CFARG_EOL);
    119 
    120 	acpi_fdt_sysctl_init();
    121 }
    122 
    123 static void
    124 acpi_fdt_poweroff(device_t dev)
    125 {
    126 	delay(500000);
    127 #ifdef EFI_RUNTIME
    128 	if (arm_efirt_reset(EFI_RESET_SHUTDOWN) == 0)
    129 		return;
    130 #endif
    131 	if (psci_available())
    132 		psci_system_off();
    133 }
    134 
    135 static void
    136 acpi_fdt_sysctl_init(void)
    137 {
    138 	const struct sysctlnode *rnode;
    139 	int error;
    140 
    141 	const int chosen = OF_finddevice("/chosen");
    142 	if (chosen >= 0)
    143 		of_getprop_uint64(chosen, "netbsd,smbios-table", &smbios_table);
    144 
    145 	error = sysctl_createv(NULL, 0, NULL, &rnode,
    146 	    CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", NULL,
    147 	    NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL);
    148 	if (error)
    149 		return;
    150 
    151 	if (smbios_table != 0) {
    152 		(void)sysctl_createv(NULL, 0, &rnode, NULL,
    153 		    CTLFLAG_PERMANENT | CTLFLAG_READONLY | CTLFLAG_HEX, CTLTYPE_QUAD,
    154 		    "smbios", SYSCTL_DESCR("SMBIOS table pointer"),
    155 		    NULL, 0, &smbios_table, sizeof(smbios_table),
    156 		    CTL_CREATE, CTL_EOL);
    157 	}
    158 }
    159