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acpi_fdt.c revision 1.3.2.2
      1  1.3.2.2  pgoyette /* $NetBSD: acpi_fdt.c,v 1.3.2.2 2018/10/20 06:58:25 pgoyette Exp $ */
      2  1.3.2.2  pgoyette 
      3  1.3.2.2  pgoyette /*-
      4  1.3.2.2  pgoyette  * Copyright (c) 2015-2017 Jared McNeill <jmcneill (at) invisible.ca>
      5  1.3.2.2  pgoyette  * All rights reserved.
      6  1.3.2.2  pgoyette  *
      7  1.3.2.2  pgoyette  * Redistribution and use in source and binary forms, with or without
      8  1.3.2.2  pgoyette  * modification, are permitted provided that the following conditions
      9  1.3.2.2  pgoyette  * are met:
     10  1.3.2.2  pgoyette  * 1. Redistributions of source code must retain the above copyright
     11  1.3.2.2  pgoyette  *    notice, this list of conditions and the following disclaimer.
     12  1.3.2.2  pgoyette  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.3.2.2  pgoyette  *    notice, this list of conditions and the following disclaimer in the
     14  1.3.2.2  pgoyette  *    documentation and/or other materials provided with the distribution.
     15  1.3.2.2  pgoyette  *
     16  1.3.2.2  pgoyette  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  1.3.2.2  pgoyette  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  1.3.2.2  pgoyette  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  1.3.2.2  pgoyette  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  1.3.2.2  pgoyette  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  1.3.2.2  pgoyette  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  1.3.2.2  pgoyette  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  1.3.2.2  pgoyette  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  1.3.2.2  pgoyette  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.3.2.2  pgoyette  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.3.2.2  pgoyette  * SUCH DAMAGE.
     27  1.3.2.2  pgoyette  */
     28  1.3.2.2  pgoyette 
     29  1.3.2.2  pgoyette #include <sys/cdefs.h>
     30  1.3.2.2  pgoyette __KERNEL_RCSID(0, "$NetBSD: acpi_fdt.c,v 1.3.2.2 2018/10/20 06:58:25 pgoyette Exp $");
     31  1.3.2.2  pgoyette 
     32  1.3.2.2  pgoyette #include <sys/param.h>
     33  1.3.2.2  pgoyette #include <sys/bus.h>
     34  1.3.2.2  pgoyette #include <sys/device.h>
     35  1.3.2.2  pgoyette #include <sys/intr.h>
     36  1.3.2.2  pgoyette #include <sys/systm.h>
     37  1.3.2.2  pgoyette #include <sys/kernel.h>
     38  1.3.2.2  pgoyette #include <sys/lwp.h>
     39  1.3.2.2  pgoyette #include <sys/kmem.h>
     40  1.3.2.2  pgoyette #include <sys/queue.h>
     41  1.3.2.2  pgoyette 
     42  1.3.2.2  pgoyette #include <dev/fdt/fdtvar.h>
     43  1.3.2.2  pgoyette 
     44  1.3.2.2  pgoyette #include <dev/acpi/acpivar.h>
     45  1.3.2.2  pgoyette #include <dev/pci/pcivar.h>
     46  1.3.2.2  pgoyette 
     47  1.3.2.2  pgoyette #include <arm/arm/psci.h>
     48  1.3.2.2  pgoyette 
     49  1.3.2.2  pgoyette #include <arm/acpi/acpi_pci_machdep.h>
     50  1.3.2.2  pgoyette 
     51  1.3.2.2  pgoyette static int	acpi_fdt_match(device_t, cfdata_t, void *);
     52  1.3.2.2  pgoyette static void	acpi_fdt_attach(device_t, device_t, void *);
     53  1.3.2.2  pgoyette 
     54  1.3.2.2  pgoyette static void	acpi_fdt_poweroff(device_t);
     55  1.3.2.2  pgoyette 
     56  1.3.2.2  pgoyette static const char * const compatible[] = {
     57  1.3.2.2  pgoyette 	"netbsd,acpi",
     58  1.3.2.2  pgoyette 	NULL
     59  1.3.2.2  pgoyette };
     60  1.3.2.2  pgoyette 
     61  1.3.2.2  pgoyette static const struct fdtbus_power_controller_func acpi_fdt_power_funcs = {
     62  1.3.2.2  pgoyette 	.poweroff = acpi_fdt_poweroff,
     63  1.3.2.2  pgoyette };
     64  1.3.2.2  pgoyette 
     65  1.3.2.2  pgoyette CFATTACH_DECL_NEW(acpi_fdt, 0, acpi_fdt_match, acpi_fdt_attach, NULL, NULL);
     66  1.3.2.2  pgoyette 
     67  1.3.2.2  pgoyette static int
     68  1.3.2.2  pgoyette acpi_fdt_match(device_t parent, cfdata_t cf, void *aux)
     69  1.3.2.2  pgoyette {
     70  1.3.2.2  pgoyette 	struct fdt_attach_args * const faa = aux;
     71  1.3.2.2  pgoyette 
     72  1.3.2.2  pgoyette 	return of_compatible(faa->faa_phandle, compatible) >= 0;
     73  1.3.2.2  pgoyette }
     74  1.3.2.2  pgoyette 
     75  1.3.2.2  pgoyette static void
     76  1.3.2.2  pgoyette acpi_fdt_attach(device_t parent, device_t self, void *aux)
     77  1.3.2.2  pgoyette {
     78  1.3.2.2  pgoyette 	struct fdt_attach_args * const faa = aux;
     79  1.3.2.2  pgoyette 	struct acpibus_attach_args aa;
     80  1.3.2.2  pgoyette 
     81  1.3.2.2  pgoyette 	aprint_naive("\n");
     82  1.3.2.2  pgoyette 	aprint_normal(": ACPI Platform support\n");
     83  1.3.2.2  pgoyette 
     84  1.3.2.2  pgoyette 	fdtbus_register_power_controller(self, faa->faa_phandle,
     85  1.3.2.2  pgoyette 	    &acpi_fdt_power_funcs);
     86  1.3.2.2  pgoyette 
     87  1.3.2.2  pgoyette 	if (!acpi_probe())
     88  1.3.2.2  pgoyette 		aprint_error_dev(self, "failed to probe ACPI\n");
     89  1.3.2.2  pgoyette 
     90  1.3.2.2  pgoyette 	aa.aa_iot = 0;
     91  1.3.2.2  pgoyette 	aa.aa_memt = faa->faa_bst;
     92  1.3.2.2  pgoyette 	aa.aa_pc = &arm_acpi_pci_chipset;
     93  1.3.2.2  pgoyette 	aa.aa_pciflags =
     94  1.3.2.2  pgoyette 	    /*PCI_FLAGS_IO_OKAY |*/ PCI_FLAGS_MEM_OKAY |
     95  1.3.2.2  pgoyette 	    PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY |
     96  1.3.2.2  pgoyette 	    PCI_FLAGS_MWI_OKAY;
     97  1.3.2.2  pgoyette 	aa.aa_ic = 0;
     98  1.3.2.2  pgoyette 	aa.aa_dmat = faa->faa_dmat;
     99  1.3.2.2  pgoyette #ifdef _PCI_HAVE_DMA64
    100  1.3.2.2  pgoyette 	aa.aa_dmat64 = faa->faa_dmat;
    101  1.3.2.2  pgoyette #endif
    102  1.3.2.2  pgoyette 	config_found_ia(self, "acpibus", &aa, 0);
    103  1.3.2.2  pgoyette }
    104  1.3.2.2  pgoyette 
    105  1.3.2.2  pgoyette static void
    106  1.3.2.2  pgoyette acpi_fdt_poweroff(device_t dev)
    107  1.3.2.2  pgoyette {
    108  1.3.2.2  pgoyette 	delay(500000);
    109  1.3.2.2  pgoyette 	if (psci_available())
    110  1.3.2.2  pgoyette 		psci_system_off();
    111  1.3.2.2  pgoyette }
    112