Home | History | Annotate | Line # | Download | only in acpi
ahcisata_acpi.c revision 1.1 
      1 /* $NetBSD: ahcisata_acpi.c,v 1.1 2018/10/12 23:26:18 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jared McNeill <jmcneill (at) invisible.ca>.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: ahcisata_acpi.c,v 1.1 2018/10/12 23:26:18 jmcneill Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/bus.h>
     37 #include <sys/cpu.h>
     38 #include <sys/device.h>
     39 #include <sys/termios.h>
     40 
     41 #include <dev/ata/atavar.h>
     42 #include <dev/ic/ahcisatavar.h>
     43 
     44 #include <dev/acpi/acpireg.h>
     45 #include <dev/acpi/acpivar.h>
     46 
     47 #include <dev/pci/pcireg.h>
     48 
     49 static int	ahcisata_acpi_match(device_t, cfdata_t, void *);
     50 static void	ahcisata_acpi_attach(device_t, device_t, void *);
     51 
     52 CFATTACH_DECL_NEW(ahcisata_acpi, sizeof(struct ahci_softc), ahcisata_acpi_match, ahcisata_acpi_attach, NULL, NULL);
     53 
     54 static int
     55 ahcisata_acpi_match(device_t parent, cfdata_t cf, void *aux)
     56 {
     57 	struct acpi_attach_args *aa = aux;
     58 
     59 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     60 		return 0;
     61 
     62 	return acpi_match_class(aa->aa_node->ad_handle,
     63 	    PCI_CLASS_MASS_STORAGE,
     64 	    PCI_SUBCLASS_MASS_STORAGE_SATA,
     65 	    PCI_INTERFACE_SATA_AHCI10);
     66 }
     67 
     68 static void
     69 ahcisata_acpi_attach(device_t parent, device_t self, void *aux)
     70 {
     71 	struct ahci_softc * const sc = device_private(self);
     72 	struct acpi_attach_args *aa = aux;
     73 	struct acpi_resources res;
     74 	struct acpi_mem *mem;
     75 	struct acpi_irq *irq;
     76 	ACPI_STATUS rv;
     77 	void *ih;
     78 
     79 	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
     80 	    &res, &acpi_resource_parse_ops_default);
     81 	if (ACPI_FAILURE(rv))
     82 		return;
     83 
     84 	mem = acpi_res_mem(&res, 0);
     85 	if (mem == NULL) {
     86 		aprint_error(": couldn't find mem resource\n");
     87 		goto done;
     88 	}
     89 
     90 	irq = acpi_res_irq(&res, 0);
     91 	if (irq == NULL) {
     92 		aprint_error(": couldn't find irq resource\n");
     93 		goto done;
     94 	}
     95 
     96 	sc->sc_atac.atac_dev = self;
     97 	sc->sc_dmat = aa->aa_dmat;
     98 	sc->sc_ahcit = aa->aa_memt;
     99 	sc->sc_ahcis = mem->ar_length;
    100 	if (bus_space_map(aa->aa_memt, mem->ar_base, mem->ar_length, 0, &sc->sc_ahcih) != 0) {
    101 		aprint_error(": couldn't map registers\n");
    102 		goto done;
    103 	}
    104 
    105 	const int type = (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL;
    106 	ih = intr_establish(irq->ar_irq, IPL_BIO, type, ahci_intr, sc);
    107 	if (ih == NULL) {
    108 		aprint_error_dev(self, "couldn't install interrupt handler\n");
    109 		return;
    110 	}
    111 
    112 	ahci_attach(sc);
    113 
    114 done:
    115 	acpi_resource_cleanup(&res);
    116 }
    117