/* $NetBSD: ahcisata_fdt.c,v 1.3 2021/01/27 03:10:21 thorpej Exp $ */

/* $NetBSD: ahcisata_fdt.c,v 1.3 2021/01/27 03:10:21 thorpej Exp $ */

/*-
* Copyright (c) 2018 Jared McNeill <[email protected]>
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>

__KERNEL_RCSID(0, "$NetBSD: ahcisata_fdt.c,v 1.3 2021/01/27 03:10:21 thorpej Exp $");

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/device.h>
#include <sys/intr.h>
#include <sys/systm.h>

#include <dev/ata/atavar.h>
#include <dev/ic/ahcisatavar.h>

#include <dev/fdt/fdtvar.h>

static const struct device_compatible_entry compat_data[] = {
{ .compat = "snps,dwc-ahci" },
{ .compat = "generic-ahci" },
DEVICE_COMPAT_EOL
};

static int
ahcisata_fdt_match(device_t parent, cfdata_t cf, void *aux)
{
struct fdt_attach_args * const faa = aux;

return of_compatible_match(faa->faa_phandle, compat_data);
}

static void
ahcisata_fdt_attach(device_t parent, device_t self, void *aux)
{
struct ahci_softc * const sc = device_private(self);
struct fdt_attach_args * const faa = aux;
const int phandle = faa->faa_phandle;
struct fdtbus_reset *rst;
struct clk *clk;
char intrstr[128];
bus_addr_t addr;
bus_size_t size;
int i;

if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
aprint_error(": couldn't get registers\n");
return;
}

sc->sc_atac.atac_dev = self;
sc->sc_dmat = faa->faa_dmat;
sc->sc_ahcit = faa->faa_bst;
sc->sc_ahcis = size;
if (bus_space_map(sc->sc_ahcit, addr, size, 0, &sc->sc_ahcih) != 0) {
aprint_error(": couldn't map registers\n");
return;
}
if (of_getprop_uint32(phandle, "ports-implemented", &sc->sc_ahci_ports) != 0)
sc->sc_save_init_data = true;

if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
aprint_error(": failed to decode interrupt\n");
return;
}

for (i = 0; (clk = fdtbus_clock_get_index(phandle, i)) != NULL; i++)
if (clk_enable(clk) != 0) {
aprint_error(": couldn't enable clock #%d\n", i);
return;
}
for (i = 0; (rst = fdtbus_reset_get_index(phandle, i)) != NULL; i++)
if (fdtbus_reset_deassert(rst) != 0) {
aprint_error(": couldn't de-assert reset #%d\n", i);
return;
}

aprint_naive("\n");
aprint_normal(": AHCI SATA controller\n");

if (fdtbus_intr_establish_xname(phandle, 0, IPL_BIO, 0,
ahci_intr, sc, device_xname(self)) == NULL) {
aprint_error_dev(self,
"failed to establish interrupt on %s\n", intrstr);
return;
}
aprint_normal_dev(self, "interrupting on %s\n", intrstr);

ahci_attach(sc);
}

CFATTACH_DECL_NEW(ahcisata_fdt, sizeof(struct ahci_softc),
ahcisata_fdt_match, ahcisata_fdt_attach, NULL, NULL);