Add support for a generic AHCI attachment. This allows us to attach to a
typically memory mapped bus, for example on the AMD Opteron A1100 the AHCI device is mapped in the CPUs address space, and not through a PCI controller. Further work is needed for this to work with ACPI as this is expected to be common on ARMv8 servers. Reviewed by: mav, mmel Obtained from: mmel, ABT Systems Ltd Relnotes: yes Sponsored by: SoftIron Inc Differential Revision: https://reviews.freebsd.org/D4269
This commit is contained in:
Andrew Turner
parent
27691a24ab
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14df39ad40
@ -57,6 +57,7 @@ arm64/cloudabi64/cloudabi64_sysvec.c optional compat_cloudabi64
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crypto/blowfish/bf_enc.c optional crypto | ipsec
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crypto/des/des_enc.c optional crypto | ipsec | netsmb
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dev/acpica/acpi_if.m optional acpi
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dev/ahci/ahci_generic.c optional ahci fdt
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dev/fdt/fdt_arm64.c optional fdt
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dev/hwpmc/hwpmc_arm64.c optional hwpmc
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dev/hwpmc/hwpmc_arm64_md.c optional hwpmc
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131
sys/dev/ahci/ahci_generic.c
Normal file
131
sys/dev/ahci/ahci_generic.c
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@ -0,0 +1,131 @@
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/*-
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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 <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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#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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{NULL, 0}
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};
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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_probe(device_t dev)
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{
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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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return (BUS_PROBE_DEFAULT);
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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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static devclass_t ahci_gen_devclass;
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static device_method_t ahci_methods[] = {
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DEVMETHOD(device_probe, ahci_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_str, ahci_child_location_str),
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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_driver = {
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"ahci",
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ahci_methods,
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sizeof(struct ahci_controller)
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};
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DRIVER_MODULE(ahci, simplebus, ahci_driver, ahci_gen_devclass, NULL, NULL);
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