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acpi_fdt.c revision 1.6
      1  1.6  jmcneill /* $NetBSD: acpi_fdt.c,v 1.6 2018/10/23 10:13:34 jmcneill Exp $ */
      2  1.1  jmcneill 
      3  1.1  jmcneill /*-
      4  1.1  jmcneill  * Copyright (c) 2015-2017 Jared McNeill <jmcneill (at) invisible.ca>
      5  1.1  jmcneill  * All rights reserved.
      6  1.1  jmcneill  *
      7  1.1  jmcneill  * Redistribution and use in source and binary forms, with or without
      8  1.1  jmcneill  * modification, are permitted provided that the following conditions
      9  1.1  jmcneill  * are met:
     10  1.1  jmcneill  * 1. Redistributions of source code must retain the above copyright
     11  1.1  jmcneill  *    notice, this list of conditions and the following disclaimer.
     12  1.1  jmcneill  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1  jmcneill  *    notice, this list of conditions and the following disclaimer in the
     14  1.1  jmcneill  *    documentation and/or other materials provided with the distribution.
     15  1.1  jmcneill  *
     16  1.1  jmcneill  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  1.1  jmcneill  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  1.1  jmcneill  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  1.1  jmcneill  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  1.1  jmcneill  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  1.1  jmcneill  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  1.1  jmcneill  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  1.1  jmcneill  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  1.1  jmcneill  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.1  jmcneill  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.1  jmcneill  * SUCH DAMAGE.
     27  1.1  jmcneill  */
     28  1.1  jmcneill 
     29  1.1  jmcneill #include <sys/cdefs.h>
     30  1.6  jmcneill __KERNEL_RCSID(0, "$NetBSD: acpi_fdt.c,v 1.6 2018/10/23 10:13:34 jmcneill Exp $");
     31  1.1  jmcneill 
     32  1.1  jmcneill #include <sys/param.h>
     33  1.1  jmcneill #include <sys/bus.h>
     34  1.1  jmcneill #include <sys/device.h>
     35  1.1  jmcneill #include <sys/intr.h>
     36  1.1  jmcneill #include <sys/systm.h>
     37  1.1  jmcneill #include <sys/kernel.h>
     38  1.1  jmcneill #include <sys/lwp.h>
     39  1.1  jmcneill #include <sys/kmem.h>
     40  1.1  jmcneill #include <sys/queue.h>
     41  1.6  jmcneill #include <sys/sysctl.h>
     42  1.1  jmcneill 
     43  1.1  jmcneill #include <dev/fdt/fdtvar.h>
     44  1.1  jmcneill 
     45  1.1  jmcneill #include <dev/acpi/acpivar.h>
     46  1.1  jmcneill #include <dev/pci/pcivar.h>
     47  1.1  jmcneill 
     48  1.2  jmcneill #include <arm/arm/psci.h>
     49  1.2  jmcneill 
     50  1.3  jmcneill #include <arm/acpi/acpi_pci_machdep.h>
     51  1.3  jmcneill 
     52  1.1  jmcneill static int	acpi_fdt_match(device_t, cfdata_t, void *);
     53  1.1  jmcneill static void	acpi_fdt_attach(device_t, device_t, void *);
     54  1.1  jmcneill 
     55  1.2  jmcneill static void	acpi_fdt_poweroff(device_t);
     56  1.2  jmcneill 
     57  1.6  jmcneill static void	acpi_fdt_sysctl_init(void);
     58  1.6  jmcneill 
     59  1.5  jmcneill static struct acpi_pci_context acpi_fdt_pci_context;
     60  1.5  jmcneill 
     61  1.6  jmcneill static uint64_t smbios_table = 0;
     62  1.6  jmcneill 
     63  1.1  jmcneill static const char * const compatible[] = {
     64  1.1  jmcneill 	"netbsd,acpi",
     65  1.1  jmcneill 	NULL
     66  1.1  jmcneill };
     67  1.1  jmcneill 
     68  1.2  jmcneill static const struct fdtbus_power_controller_func acpi_fdt_power_funcs = {
     69  1.2  jmcneill 	.poweroff = acpi_fdt_poweroff,
     70  1.2  jmcneill };
     71  1.2  jmcneill 
     72  1.1  jmcneill CFATTACH_DECL_NEW(acpi_fdt, 0, acpi_fdt_match, acpi_fdt_attach, NULL, NULL);
     73  1.1  jmcneill 
     74  1.1  jmcneill static int
     75  1.1  jmcneill acpi_fdt_match(device_t parent, cfdata_t cf, void *aux)
     76  1.1  jmcneill {
     77  1.1  jmcneill 	struct fdt_attach_args * const faa = aux;
     78  1.1  jmcneill 
     79  1.1  jmcneill 	return of_compatible(faa->faa_phandle, compatible) >= 0;
     80  1.1  jmcneill }
     81  1.1  jmcneill 
     82  1.1  jmcneill static void
     83  1.1  jmcneill acpi_fdt_attach(device_t parent, device_t self, void *aux)
     84  1.1  jmcneill {
     85  1.1  jmcneill 	struct fdt_attach_args * const faa = aux;
     86  1.1  jmcneill 	struct acpibus_attach_args aa;
     87  1.1  jmcneill 
     88  1.1  jmcneill 	aprint_naive("\n");
     89  1.1  jmcneill 	aprint_normal(": ACPI Platform support\n");
     90  1.1  jmcneill 
     91  1.2  jmcneill 	fdtbus_register_power_controller(self, faa->faa_phandle,
     92  1.2  jmcneill 	    &acpi_fdt_power_funcs);
     93  1.2  jmcneill 
     94  1.1  jmcneill 	if (!acpi_probe())
     95  1.1  jmcneill 		aprint_error_dev(self, "failed to probe ACPI\n");
     96  1.1  jmcneill 
     97  1.5  jmcneill 	acpi_fdt_pci_context.ap_pc = arm_acpi_pci_chipset;
     98  1.5  jmcneill 	acpi_fdt_pci_context.ap_pc.pc_conf_v = &acpi_fdt_pci_context;
     99  1.5  jmcneill 	acpi_fdt_pci_context.ap_seg = 0;
    100  1.5  jmcneill 
    101  1.1  jmcneill 	aa.aa_iot = 0;
    102  1.1  jmcneill 	aa.aa_memt = faa->faa_bst;
    103  1.5  jmcneill 	aa.aa_pc = &acpi_fdt_pci_context.ap_pc;
    104  1.1  jmcneill 	aa.aa_pciflags =
    105  1.3  jmcneill 	    /*PCI_FLAGS_IO_OKAY |*/ PCI_FLAGS_MEM_OKAY |
    106  1.1  jmcneill 	    PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
    107  1.1  jmcneill 	    PCI_FLAGS_MWI_OKAY;
    108  1.4  jmcneill #ifdef __HAVE_PCI_MSI_MSIX
    109  1.4  jmcneill 	aa.aa_pciflags |= PCI_FLAGS_MSI_OKAY;
    110  1.4  jmcneill #endif
    111  1.1  jmcneill 	aa.aa_ic = 0;
    112  1.1  jmcneill 	aa.aa_dmat = faa->faa_dmat;
    113  1.1  jmcneill #ifdef _PCI_HAVE_DMA64
    114  1.1  jmcneill 	aa.aa_dmat64 = faa->faa_dmat;
    115  1.1  jmcneill #endif
    116  1.1  jmcneill 	config_found_ia(self, "acpibus", &aa, 0);
    117  1.6  jmcneill 
    118  1.6  jmcneill 	acpi_fdt_sysctl_init();
    119  1.1  jmcneill }
    120  1.2  jmcneill 
    121  1.2  jmcneill static void
    122  1.2  jmcneill acpi_fdt_poweroff(device_t dev)
    123  1.2  jmcneill {
    124  1.2  jmcneill 	delay(500000);
    125  1.2  jmcneill 	if (psci_available())
    126  1.2  jmcneill 		psci_system_off();
    127  1.2  jmcneill }
    128  1.6  jmcneill 
    129  1.6  jmcneill static void
    130  1.6  jmcneill acpi_fdt_sysctl_init(void)
    131  1.6  jmcneill {
    132  1.6  jmcneill 	const struct sysctlnode *rnode;
    133  1.6  jmcneill 	int error;
    134  1.6  jmcneill 
    135  1.6  jmcneill 	const int chosen = OF_finddevice("/chosen");
    136  1.6  jmcneill 	if (chosen >= 0)
    137  1.6  jmcneill 		of_getprop_uint64(chosen, "netbsd,smbios-table", &smbios_table);
    138  1.6  jmcneill 
    139  1.6  jmcneill 	error = sysctl_createv(NULL, 0, NULL, &rnode,
    140  1.6  jmcneill 	    CTLFLAG_PERMANENT, CTLTYPE_NODE, "machdep", NULL,
    141  1.6  jmcneill 	    NULL, 0, NULL, 0, CTL_MACHDEP, CTL_EOL);
    142  1.6  jmcneill 	if (error)
    143  1.6  jmcneill 		return;
    144  1.6  jmcneill 
    145  1.6  jmcneill 	if (smbios_table != 0) {
    146  1.6  jmcneill 		(void)sysctl_createv(NULL, 0, &rnode, NULL,
    147  1.6  jmcneill 		    CTLFLAG_PERMANENT | CTLFLAG_READONLY | CTLFLAG_HEX, CTLTYPE_QUAD,
    148  1.6  jmcneill 		    "smbios", SYSCTL_DESCR("SMBIOS table pointer"),
    149  1.6  jmcneill 		    NULL, 0, &smbios_table, sizeof(smbios_table),
    150  1.6  jmcneill 		    CTL_CREATE, CTL_EOL);
    151  1.6  jmcneill 	}
    152  1.6  jmcneill }
    153