Home | History | Annotate | Line # | Download | only in fdt 
      1 /* $NetBSD: ahcisata_fdt.c,v 1.3 2021/01/27 03:10:21 thorpej Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 
     31 __KERNEL_RCSID(0, "$NetBSD: ahcisata_fdt.c,v 1.3 2021/01/27 03:10:21 thorpej Exp $");
     32 
     33 #include <sys/param.h>
     34 #include <sys/bus.h>
     35 #include <sys/device.h>
     36 #include <sys/intr.h>
     37 #include <sys/systm.h>
     38 
     39 #include <dev/ata/atavar.h>
     40 #include <dev/ic/ahcisatavar.h>
     41 
     42 #include <dev/fdt/fdtvar.h>
     43 
     44 static const struct device_compatible_entry compat_data[] = {
     45 	{ .compat = "snps,dwc-ahci" },
     46 	{ .compat = "generic-ahci" },
     47 	DEVICE_COMPAT_EOL
     48 };
     49 
     50 static int
     51 ahcisata_fdt_match(device_t parent, cfdata_t cf, void *aux)
     52 {
     53 	struct fdt_attach_args * const faa = aux;
     54 
     55 	return of_compatible_match(faa->faa_phandle, compat_data);
     56 }
     57 
     58 static void
     59 ahcisata_fdt_attach(device_t parent, device_t self, void *aux)
     60 {
     61 	struct ahci_softc * const sc = device_private(self);
     62 	struct fdt_attach_args * const faa = aux;
     63 	const int phandle = faa->faa_phandle;
     64 	struct fdtbus_reset *rst;
     65 	struct clk *clk;
     66 	char intrstr[128];
     67 	bus_addr_t addr;
     68 	bus_size_t size;
     69 	int i;
     70 
     71 	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
     72 		aprint_error(": couldn't get registers\n");
     73 		return;
     74 	}
     75 
     76 	sc->sc_atac.atac_dev = self;
     77 	sc->sc_dmat = faa->faa_dmat;
     78 	sc->sc_ahcit = faa->faa_bst;
     79 	sc->sc_ahcis = size;
     80 	if (bus_space_map(sc->sc_ahcit, addr, size, 0, &sc->sc_ahcih) != 0) {
     81 		aprint_error(": couldn't map registers\n");
     82 		return;
     83 	}
     84 	if (of_getprop_uint32(phandle, "ports-implemented", &sc->sc_ahci_ports) != 0)
     85 		sc->sc_save_init_data = true;
     86 
     87 	if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) {
     88 		aprint_error(": failed to decode interrupt\n");
     89 		return;
     90 	}
     91 
     92 	for (i = 0; (clk = fdtbus_clock_get_index(phandle, i)) != NULL; i++)
     93 		if (clk_enable(clk) != 0) {
     94 			aprint_error(": couldn't enable clock #%d\n", i);
     95 			return;
     96 		}
     97 	for (i = 0; (rst = fdtbus_reset_get_index(phandle, i)) != NULL; i++)
     98 		if (fdtbus_reset_deassert(rst) != 0) {
     99 			aprint_error(": couldn't de-assert reset #%d\n", i);
    100 			return;
    101 		}
    102 
    103 	aprint_naive("\n");
    104 	aprint_normal(": AHCI SATA controller\n");
    105 
    106 	if (fdtbus_intr_establish_xname(phandle, 0, IPL_BIO, 0,
    107 	    ahci_intr, sc, device_xname(self)) == NULL) {
    108 		aprint_error_dev(self,
    109 		    "failed to establish interrupt on %s\n", intrstr);
    110 		return;
    111 	}
    112 	aprint_normal_dev(self, "interrupting on %s\n", intrstr);
    113 
    114 	ahci_attach(sc);
    115 }
    116 
    117 CFATTACH_DECL_NEW(ahcisata_fdt, sizeof(struct ahci_softc),
    118 	ahcisata_fdt_match, ahcisata_fdt_attach, NULL, NULL);
    119