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vmbus_acpi.c revision 1.2.2.2 
      1  1.2.2.2  christos /*	$NetBSD: vmbus_acpi.c,v 1.2.2.2 2019/06/10 22:07:05 christos Exp $	*/
      2  1.2.2.2  christos 
      3  1.2.2.2  christos /*
      4  1.2.2.2  christos  * Copyright (c) 2018 Kimihiro Nonaka <nonaka (at) NetBSD.org>
      5  1.2.2.2  christos  * All rights reserved.
      6  1.2.2.2  christos  *
      7  1.2.2.2  christos  * Redistribution and use in source and binary forms, with or without
      8  1.2.2.2  christos  * modification, are permitted provided that the following conditions
      9  1.2.2.2  christos  * are met:
     10  1.2.2.2  christos  * 1. Redistributions of source code must retain the above copyright
     11  1.2.2.2  christos  *    notice, this list of conditions and the following disclaimer.
     12  1.2.2.2  christos  * 2. The name of the author may not be used to endorse or promote products
     13  1.2.2.2  christos  *    derived from this software without specific prior written permission.
     14  1.2.2.2  christos  *
     15  1.2.2.2  christos  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  1.2.2.2  christos  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  1.2.2.2  christos  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  1.2.2.2  christos  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  1.2.2.2  christos  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     20  1.2.2.2  christos  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     21  1.2.2.2  christos  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     22  1.2.2.2  christos  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     23  1.2.2.2  christos  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  1.2.2.2  christos  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  1.2.2.2  christos  * SUCH DAMAGE.
     26  1.2.2.2  christos  */
     27  1.2.2.2  christos 
     28  1.2.2.2  christos #include <sys/cdefs.h>
     29  1.2.2.2  christos __KERNEL_RCSID(0, "$NetBSD: vmbus_acpi.c,v 1.2.2.2 2019/06/10 22:07:05 christos Exp $");
     30  1.2.2.2  christos 
     31  1.2.2.2  christos #include <sys/param.h>
     32  1.2.2.2  christos #include <sys/device.h>
     33  1.2.2.2  christos #include <sys/systm.h>
     34  1.2.2.2  christos #include <sys/kmem.h>
     35  1.2.2.2  christos 
     36  1.2.2.2  christos #include <dev/acpi/acpireg.h>
     37  1.2.2.2  christos #include <dev/acpi/acpivar.h>
     38  1.2.2.2  christos 
     39  1.2.2.2  christos #include <dev/hyperv/vmbusvar.h>
     40  1.2.2.2  christos 
     41  1.2.2.2  christos #define _COMPONENT	ACPI_RESOURCE_COMPONENT
     42  1.2.2.2  christos ACPI_MODULE_NAME	("vmbus_acpi")
     43  1.2.2.2  christos 
     44  1.2.2.2  christos static int	vmbus_acpi_match(device_t, cfdata_t, void *);
     45  1.2.2.2  christos static void	vmbus_acpi_attach(device_t, device_t, void *);
     46  1.2.2.2  christos static int	vmbus_acpi_detach(device_t, int);
     47  1.2.2.2  christos 
     48  1.2.2.2  christos struct vmbus_acpi_softc {
     49  1.2.2.2  christos 	struct vmbus_softc sc;
     50  1.2.2.2  christos };
     51  1.2.2.2  christos 
     52  1.2.2.2  christos CFATTACH_DECL_NEW(vmbus_acpi, sizeof(struct vmbus_acpi_softc),
     53  1.2.2.2  christos     vmbus_acpi_match, vmbus_acpi_attach, vmbus_acpi_detach, NULL);
     54  1.2.2.2  christos 
     55  1.2.2.2  christos static const char * const vmbus_acpi_ids[] = {
     56  1.2.2.2  christos 	"VMBUS",
     57  1.2.2.2  christos 	"VMBus",
     58  1.2.2.2  christos 	NULL
     59  1.2.2.2  christos };
     60  1.2.2.2  christos 
     61  1.2.2.2  christos static int
     62  1.2.2.2  christos vmbus_acpi_match(device_t parent, cfdata_t match, void *opaque)
     63  1.2.2.2  christos {
     64  1.2.2.2  christos 	struct acpi_attach_args *aa = opaque;
     65  1.2.2.2  christos 
     66  1.2.2.2  christos 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     67  1.2.2.2  christos 		return 0;
     68  1.2.2.2  christos 
     69  1.2.2.2  christos 	if (!acpi_match_hid(aa->aa_node->ad_devinfo, vmbus_acpi_ids))
     70  1.2.2.2  christos 		return 0;
     71  1.2.2.2  christos 
     72  1.2.2.2  christos 	if (!vmbus_match(parent, match, opaque))
     73  1.2.2.2  christos 		return 0;
     74  1.2.2.2  christos 
     75  1.2.2.2  christos 	return 1;
     76  1.2.2.2  christos }
     77  1.2.2.2  christos 
     78  1.2.2.2  christos static void
     79  1.2.2.2  christos vmbus_acpi_attach(device_t parent, device_t self, void *opaque)
     80  1.2.2.2  christos {
     81  1.2.2.2  christos 	struct vmbus_acpi_softc *sc = device_private(self);
     82  1.2.2.2  christos 	struct acpi_attach_args *aa = opaque;
     83  1.2.2.2  christos 
     84  1.2.2.2  christos 	sc->sc.sc_dev = self;
     85  1.2.2.2  christos 	sc->sc.sc_iot = aa->aa_iot;
     86  1.2.2.2  christos 	sc->sc.sc_memt = aa->aa_memt;
     87  1.2.2.2  christos 	sc->sc.sc_dmat = aa->aa_dmat64 ? aa->aa_dmat64 : aa->aa_dmat;
     88  1.2.2.2  christos 
     89  1.2.2.2  christos 	if (vmbus_attach(&sc->sc))
     90  1.2.2.2  christos 		return;
     91  1.2.2.2  christos 
     92  1.2.2.2  christos 	(void)pmf_device_register(self, NULL, NULL);
     93  1.2.2.2  christos }
     94  1.2.2.2  christos 
     95  1.2.2.2  christos static int
     96  1.2.2.2  christos vmbus_acpi_detach(device_t self, int flags)
     97  1.2.2.2  christos {
     98  1.2.2.2  christos 	struct vmbus_acpi_softc *sc = device_private(self);
     99  1.2.2.2  christos 	int rv;
    100  1.2.2.2  christos 
    101  1.2.2.2  christos 	rv = vmbus_detach(&sc->sc, flags);
    102  1.2.2.2  christos 	if (rv)
    103  1.2.2.2  christos 		return rv;
    104  1.2.2.2  christos 
    105  1.2.2.2  christos 	pmf_device_deregister(self);
    106  1.2.2.2  christos 
    107  1.2.2.2  christos 	return 0;
    108  1.2.2.2  christos }
    109