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/*
* Copyright (c) 2017 Semihalf.
* Copyright (c) 2017 Stormshield.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/stdint.h>
#include <sys/stddef.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/rman.h>
#include <sys/unistd.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/ahci/ahci.h>
#define AHCI_VENDOR_SPECIFIC_0_ADDR 0xa0
#define AHCI_VENDOR_SPECIFIC_0_DATA 0xa4
#define AHCI_HC_DEVSTR "Marvell AHCI Controller"
#define AHCI_HC_VENDOR "Marvell"
static device_attach_t ahci_mv_fdt_attach;
static struct ofw_compat_data compatible_data[] = {
{"marvell,armada-380-ahci", true},
{NULL, false}
};
static void
ahci_mv_regret_config(struct ahci_controller *ctlr)
{
/*
* Enable the regret bit to allow the SATA unit to regret
* a request that didn't receive an acknowledge
* and a avoid deadlock
*/
ATA_OUTL(ctlr->r_mem, AHCI_VENDOR_SPECIFIC_0_ADDR, 0x4);
ATA_OUTL(ctlr->r_mem, AHCI_VENDOR_SPECIFIC_0_DATA, 0x80);
}
static int
ahci_mv_fdt_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_search_compatible(dev, compatible_data)->ocd_data)
return (ENXIO);
device_set_desc(dev, AHCI_HC_DEVSTR);
return (BUS_PROBE_DEFAULT);
}
static int
ahci_mv_fdt_attach(device_t dev)
{
struct ahci_controller *ctlr;
int rc;
ctlr = device_get_softc(dev);
ctlr->dev = dev;
ctlr->r_rid = 0;
ctlr->quirks = AHCI_Q_2CH;
ctlr->numirqs = 1;
if (ofw_bus_is_compatible(dev, "marvell,armada-380-ahci"))
ctlr->quirks |= AHCI_Q_MRVL_SR_DEL;
/* Allocate memory for controller */
ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&ctlr->r_rid, RF_ACTIVE | RF_SHAREABLE);
if (ctlr->r_mem == NULL) {
device_printf(dev, "Failed to alloc memory for controller\n");
return (ENOMEM);
}
/* Reset controller */
rc = ahci_ctlr_reset(dev);
if (rc != 0) {
device_printf(dev, "Failed to reset controller\n");
bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem);
return (ENXIO);
}
ahci_mv_regret_config(ctlr);
rc = ahci_attach(dev);
if (rc != 0) {
device_printf(dev, "Failed to initialize AHCI, with error %d\n", rc);
return (ENXIO);
}
return (0);
}
static device_method_t ahci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ahci_mv_fdt_probe),
DEVMETHOD(device_attach, ahci_mv_fdt_attach),
DEVMETHOD(device_detach, ahci_detach),
DEVMETHOD(bus_alloc_resource, ahci_alloc_resource),
DEVMETHOD(bus_release_resource, ahci_release_resource),
DEVMETHOD(bus_setup_intr, ahci_setup_intr),
DEVMETHOD(bus_teardown_intr, ahci_teardown_intr),
DEVMETHOD(bus_print_child, ahci_print_child),
DEVMETHOD(bus_child_location, ahci_child_location),
DEVMETHOD(bus_get_dma_tag, ahci_get_dma_tag),
DEVMETHOD_END
};
static driver_t ahci_driver = {
"ahci",
ahci_methods,
sizeof(struct ahci_controller)
};
DRIVER_MODULE(ahci_mv, simplebus, ahci_driver, ahci_devclass, NULL, NULL);
DRIVER_MODULE(ahci_mv, ofwbus, ahci_driver, ahci_devclass, NULL, NULL);
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