156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*
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* Copyright (c) 2017 Semihalf.
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* Copyright (c) 2017 Stormshield.
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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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* 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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* 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/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.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/module.h>
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#include <sys/sysctl.h>
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#include <sys/rman.h>
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#include <sys/unistd.h>
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#include <machine/bus.h>
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#include <machine/resource.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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#include <dev/ahci/ahci.h>
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#define AHCI_VENDOR_SPECIFIC_0_ADDR 0xa0
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#define AHCI_VENDOR_SPECIFIC_0_DATA 0xa4
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#define AHCI_HC_DEVSTR "Marvell AHCI Controller"
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#define AHCI_HC_VENDOR "Marvell"
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static device_attach_t ahci_mv_fdt_attach;
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static struct ofw_compat_data compatible_data[] = {
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{"marvell,armada-380-ahci", true},
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{NULL, false}
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};
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static void
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ahci_mv_regret_config(struct ahci_controller *ctlr)
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{
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/*
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* Enable the regret bit to allow the SATA unit to regret
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* a request that didn't receive an acknowledge
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* and a avoid deadlock
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*/
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ATA_OUTL(ctlr->r_mem, AHCI_VENDOR_SPECIFIC_0_ADDR, 0x4);
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ATA_OUTL(ctlr->r_mem, AHCI_VENDOR_SPECIFIC_0_DATA, 0x80);
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}
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static int
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ahci_mv_fdt_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, compatible_data)->ocd_data)
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return (ENXIO);
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device_set_desc(dev, AHCI_HC_DEVSTR);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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ahci_mv_fdt_attach(device_t dev)
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{
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struct ahci_controller *ctlr;
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int rc;
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ctlr = device_get_softc(dev);
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ctlr->dev = dev;
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ctlr->r_rid = 0;
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ctlr->quirks = AHCI_Q_2CH;
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ctlr->numirqs = 1;
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if (ofw_bus_is_compatible(dev, "marvell,armada-380-ahci"))
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ctlr->quirks |= AHCI_Q_MRVL_SR_DEL;
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/* Allocate memory for controller */
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ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&ctlr->r_rid, RF_ACTIVE | RF_SHAREABLE);
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if (ctlr->r_mem == NULL) {
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device_printf(dev, "Failed to alloc memory for controller\n");
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return (ENOMEM);
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}
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/* Reset controller */
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rc = ahci_ctlr_reset(dev);
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if (rc != 0) {
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device_printf(dev, "Failed to reset controller\n");
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bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
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return (ENXIO);
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}
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ahci_mv_regret_config(ctlr);
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rc = ahci_attach(dev);
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if (rc != 0) {
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device_printf(dev, "Failed to initialize AHCI, with error %d\n", rc);
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return (ENXIO);
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}
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return (0);
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}
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static device_method_t ahci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ahci_mv_fdt_probe),
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DEVMETHOD(device_attach, ahci_mv_fdt_attach),
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DEVMETHOD(device_detach, ahci_detach),
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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_print_child, ahci_print_child),
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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_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_mv, simplebus, ahci_driver, NULL, NULL);
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DRIVER_MODULE(ahci_mv, ofwbus, ahci_driver, NULL, NULL);
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