127 lines
3.9 KiB
C
127 lines
3.9 KiB
C
/* $NetBSD: ahcisata_acpi.c,v 1.5 2020/04/15 19:26:51 jmcneill Exp $ */
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/*-
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* Copyright (c) 2018 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jared McNeill <jmcneill@invisible.ca>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ahcisata_acpi.c,v 1.5 2020/04/15 19:26:51 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/device.h>
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#include <sys/termios.h>
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#include <dev/ata/atavar.h>
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#include <dev/ic/ahcisatavar.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/acpi/acpi_intr.h>
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#include <dev/pci/pcireg.h>
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static int ahcisata_acpi_match(device_t, cfdata_t, void *);
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static void ahcisata_acpi_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(ahcisata_acpi, sizeof(struct ahci_softc), ahcisata_acpi_match, ahcisata_acpi_attach, NULL, NULL);
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static int
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ahcisata_acpi_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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return acpi_match_class(aa->aa_node->ad_handle,
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PCI_CLASS_MASS_STORAGE,
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PCI_SUBCLASS_MASS_STORAGE_SATA,
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PCI_INTERFACE_SATA_AHCI10);
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}
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static void
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ahcisata_acpi_attach(device_t parent, device_t self, void *aux)
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{
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struct ahci_softc * const sc = device_private(self);
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struct acpi_attach_args *aa = aux;
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struct acpi_resources res;
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struct acpi_mem *mem;
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struct acpi_irq *irq;
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ACPI_STATUS rv;
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uint32_t cap;
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void *ih;
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rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
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&res, &acpi_resource_parse_ops_default);
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if (ACPI_FAILURE(rv))
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return;
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mem = acpi_res_mem(&res, 0);
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if (mem == NULL) {
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aprint_error(": couldn't find mem resource\n");
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goto done;
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}
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irq = acpi_res_irq(&res, 0);
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if (irq == NULL) {
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aprint_error(": couldn't find irq resource\n");
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goto done;
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}
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sc->sc_atac.atac_dev = self;
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sc->sc_ahcit = aa->aa_memt;
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sc->sc_ahcis = mem->ar_length;
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if (bus_space_map(aa->aa_memt, mem->ar_base, mem->ar_length, 0, &sc->sc_ahcih) != 0) {
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aprint_error(": couldn't map registers\n");
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goto done;
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}
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cap = AHCI_READ(sc, AHCI_CAP);
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if ((cap & AHCI_CAP_64BIT) != 0 && BUS_DMA_TAG_VALID(aa->aa_dmat64)) {
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aprint_verbose_dev(self, "using 64-bit DMA\n");
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sc->sc_dmat = aa->aa_dmat64;
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} else {
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aprint_verbose_dev(self, "using 32-bit DMA\n");
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sc->sc_dmat = aa->aa_dmat;
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}
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ih = acpi_intr_establish(self, (uint64_t)aa->aa_node->ad_handle,
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IPL_BIO, false, ahci_intr, sc, device_xname(self));
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if (ih == NULL) {
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aprint_error_dev(self, "couldn't install interrupt handler\n");
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return;
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}
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ahci_attach(sc);
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done:
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acpi_resource_cleanup(&res);
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}
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