117 lines
3.7 KiB
C
117 lines
3.7 KiB
C
/* $NetBSD: ahcisata_fdt.c,v 1.1 2018/09/03 23:15:12 jmcneill Exp $ */
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/*-
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* Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ahcisata_fdt.c,v 1.1 2018/09/03 23:15:12 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/intr.h>
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#include <sys/systm.h>
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#include <dev/ata/atavar.h>
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#include <dev/ic/ahcisatavar.h>
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#include <dev/fdt/fdtvar.h>
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static const char * compatible[] = {
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"snps,dwc-ahci",
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"generic-ahci",
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NULL
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};
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static int
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ahcisata_fdt_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct fdt_attach_args * const faa = aux;
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return of_match_compatible(faa->faa_phandle, compatible);
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}
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static void
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ahcisata_fdt_attach(device_t parent, device_t self, void *aux)
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{
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struct ahci_softc * const sc = device_private(self);
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struct fdt_attach_args * const faa = aux;
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const int phandle = faa->faa_phandle;
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struct fdtbus_reset *rst;
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struct clk *clk;
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char intrstr[128];
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bus_addr_t addr;
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bus_size_t size;
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int i;
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if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
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aprint_error(": couldn't get registers\n");
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return;
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}
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sc->sc_atac.atac_dev = self;
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sc->sc_dmat = faa->faa_dmat;
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sc->sc_ahcit = faa->faa_bst;
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sc->sc_ahcis = size;
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if (bus_space_map(sc->sc_ahcit, addr, size, 0, &sc->sc_ahcih) != 0) {
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aprint_error(": couldn't map registers\n");
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return;
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}
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if (of_getprop_uint32(phandle, "ports-implemented", &sc->sc_ahci_ports) != 0)
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sc->sc_save_init_data = true;
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if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
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aprint_error(": failed to decode interrupt\n");
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return;
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}
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for (i = 0; (clk = fdtbus_clock_get_index(phandle, i)) != NULL; i++)
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if (clk_enable(clk) != 0) {
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aprint_error(": couldn't enable clock #%d\n", i);
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return;
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}
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for (i = 0; (rst = fdtbus_reset_get_index(phandle, i)) != NULL; i++)
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if (fdtbus_reset_deassert(rst) != 0) {
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aprint_error(": couldn't de-assert reset #%d\n", i);
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return;
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}
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aprint_naive("\n");
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aprint_normal(": AHCI SATA controller\n");
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if (fdtbus_intr_establish(phandle, 0, IPL_BIO, 0, ahci_intr, sc) == NULL) {
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aprint_error_dev(self, "failed to establish interrupt on %s\n", intrstr);
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return;
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}
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aprint_normal_dev(self, "interrupting on %s\n", intrstr);
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ahci_attach(sc);
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}
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CFATTACH_DECL_NEW(ahcisata_fdt, sizeof(struct ahci_softc),
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ahcisata_fdt_match, ahcisata_fdt_attach, NULL, NULL);
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