ddfc9c4c59
Now that the upper layers all go through a layer to tie into these
information functions that translates an sbuf into char * and len. The
current interface suffers issues of what to do in cases of truncation,
etc. Instead, migrate all these functions to using struct sbuf and these
issues go away. The caller is also in charge of any memory allocation
and/or expansion that's needed during this process.
Create a bus_generic_child_{pnpinfo,location} and make it default. It
just returns success. This is for those busses that have no information
for these items. Migrate the now-empty routines to using this as
appropriate.
Document these new interfaces with man pages, and oversight from before.
Reviewed by: jhb, bcr
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D29937
221 lines
5.9 KiB
C
221 lines
5.9 KiB
C
/*-
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* Copyright (c) 2009-2012 Alexander Motin <mav@FreeBSD.org>
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* All rights reserved.
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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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* without modification, immediately at the beginning of the file.
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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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_acpi.h"
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#include "opt_platform.h"
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#include <sys/param.h>
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/endian.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <dev/ahci/ahci.h>
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#ifdef DEV_ACPI
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#include <contrib/dev/acpica/include/acpi.h>
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#include <dev/acpica/acpivar.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#endif
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#ifdef FDT
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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static struct ofw_compat_data compat_data[] = {
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{"generic-ahci", 1},
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{"snps,dwc-ahci", 1},
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{"marvell,armada-3700-ahci", 1},
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{NULL, 0}
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};
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static int
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ahci_fdt_probe(device_t dev)
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{
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struct ahci_controller *ctlr = device_get_softc(dev);
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phandle_t node;
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
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return (ENXIO);
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device_set_desc_copy(dev, "AHCI SATA controller");
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node = ofw_bus_get_node(dev);
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ctlr->dma_coherent = OF_hasprop(node, "dma-coherent");
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return (BUS_PROBE_DEFAULT);
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}
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#endif
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#ifdef DEV_ACPI
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static const struct ahci_acpi_quirk {
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const char* hid;
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u_int quirks;
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} ahci_acpi_quirks[] = {
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{ "NXP0004", AHCI_Q_NOPMP },
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{ NULL, 0 }
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};
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static int
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ahci_acpi_probe(device_t dev)
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{
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struct ahci_controller *ctlr = device_get_softc(dev);
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ACPI_HANDLE h;
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int i;
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if ((h = acpi_get_handle(dev)) == NULL)
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return (ENXIO);
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if (pci_get_class(dev) == PCIC_STORAGE &&
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pci_get_subclass(dev) == PCIS_STORAGE_SATA &&
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pci_get_progif(dev) == PCIP_STORAGE_SATA_AHCI_1_0) {
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device_set_desc_copy(dev, "AHCI SATA controller");
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if (ACPI_FAILURE(acpi_GetInteger(h, "_CCA",
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&ctlr->dma_coherent)))
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ctlr->dma_coherent = 0;
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if (bootverbose)
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device_printf(dev, "Bus is%s cache-coherent\n",
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ctlr->dma_coherent ? "" : " not");
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for (i = 0; ahci_acpi_quirks[i].hid != NULL; i++) {
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if (acpi_MatchHid(h, ahci_acpi_quirks[i].hid) != ACPI_MATCHHID_NOMATCH) {
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ctlr->quirks = ahci_acpi_quirks[i].quirks;
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break;
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}
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}
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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#endif
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static int
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ahci_gen_ctlr_reset(device_t dev)
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{
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return ahci_ctlr_reset(dev);
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}
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static int
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ahci_gen_attach(device_t dev)
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{
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struct ahci_controller *ctlr = device_get_softc(dev);
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int error;
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ctlr->r_rid = 0;
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ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &ctlr->r_rid,
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RF_ACTIVE);
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if (ctlr->r_mem == NULL)
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return (ENXIO);
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/* Setup controller defaults. */
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ctlr->numirqs = 1;
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/* Reset controller */
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if ((error = ahci_gen_ctlr_reset(dev)) == 0)
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error = ahci_attach(dev);
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if (error != 0) {
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if (ctlr->r_mem != NULL)
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bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid,
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ctlr->r_mem);
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}
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return error;
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}
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static int
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ahci_gen_detach(device_t dev)
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{
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ahci_detach(dev);
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return (0);
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}
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#ifdef FDT
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static devclass_t ahci_gen_fdt_devclass;
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static device_method_t ahci_fdt_methods[] = {
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DEVMETHOD(device_probe, ahci_fdt_probe),
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DEVMETHOD(device_attach, ahci_gen_attach),
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DEVMETHOD(device_detach, ahci_gen_detach),
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DEVMETHOD(bus_print_child, ahci_print_child),
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DEVMETHOD(bus_alloc_resource, ahci_alloc_resource),
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DEVMETHOD(bus_release_resource, ahci_release_resource),
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DEVMETHOD(bus_setup_intr, ahci_setup_intr),
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DEVMETHOD(bus_teardown_intr,ahci_teardown_intr),
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DEVMETHOD(bus_child_location, ahci_child_location),
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DEVMETHOD(bus_get_dma_tag, ahci_get_dma_tag),
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DEVMETHOD_END
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};
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static driver_t ahci_fdt_driver = {
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"ahci",
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ahci_fdt_methods,
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sizeof(struct ahci_controller)
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};
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DRIVER_MODULE(ahci_fdt, simplebus, ahci_fdt_driver, ahci_gen_fdt_devclass,
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NULL, NULL);
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#endif
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#ifdef DEV_ACPI
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static devclass_t ahci_gen_acpi_devclass;
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static device_method_t ahci_acpi_methods[] = {
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DEVMETHOD(device_probe, ahci_acpi_probe),
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DEVMETHOD(device_attach, ahci_gen_attach),
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DEVMETHOD(device_detach, ahci_gen_detach),
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DEVMETHOD(bus_print_child, ahci_print_child),
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DEVMETHOD(bus_alloc_resource, ahci_alloc_resource),
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DEVMETHOD(bus_release_resource, ahci_release_resource),
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DEVMETHOD(bus_setup_intr, ahci_setup_intr),
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DEVMETHOD(bus_teardown_intr,ahci_teardown_intr),
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DEVMETHOD(bus_child_location, ahci_child_location),
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DEVMETHOD(bus_get_dma_tag, ahci_get_dma_tag),
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DEVMETHOD_END
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};
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static driver_t ahci_acpi_driver = {
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"ahci",
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ahci_acpi_methods,
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sizeof(struct ahci_controller)
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};
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DRIVER_MODULE(ahci_acpi, acpi, ahci_acpi_driver, ahci_gen_acpi_devclass,
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NULL, NULL);
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#endif
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