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      1 /* $NetBSD: ahcisata_ahb.c,v 1.4 2026/03/30 10:30:31 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2025 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_ahb.c,v 1.4 2026/03/30 10:30:31 jmcneill 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 <machine/wii.h>
     43 #include <machine/wiiu.h>
     44 
     45 #include "ahb.h"
     46 
     47 #define SATA_HCCFG_INT_REG	0x400
     48 #define  SATA_HCCFG_INT_PORT1	__BIT(5)
     49 #define  SATA_HCCFG_INT_PORT0	__BIT(3)
     50 #define SATA_HCCFG_INTMSK_REG	0x404
     51 
     52 #define	RD4(sc, reg)		\
     53 	bus_space_read_4((sc)->sc_ahcit, (sc)->sc_ahcih, (reg))
     54 #define	WR4(sc, reg, val)	\
     55 	bus_space_write_4((sc)->sc_ahcit, (sc)->sc_ahcih, (reg), (val))
     56 
     57 static int
     58 ahcisata_ahb_intr(void *arg)
     59 {
     60 	struct ahci_softc * const sc = arg;
     61 	uint32_t val;
     62 	int ret = 0;
     63 
     64 	val = RD4(sc, SATA_HCCFG_INT_REG);
     65 
     66 	if ((val & SATA_HCCFG_INT_PORT0) != 0) {
     67 		ret |= ahci_intr_port(&sc->sc_channels[0].ata_channel);
     68 	}
     69 	if ((val & SATA_HCCFG_INT_PORT1) != 0) {
     70 		ret |= ahci_intr_port(&sc->sc_channels[1].ata_channel);
     71 	}
     72 
     73 	if (val != 0) {
     74 		ret |= 1;
     75 		WR4(sc, SATA_HCCFG_INT_REG, val);
     76 	}
     77 
     78 	return ret;
     79 }
     80 
     81 static int
     82 ahcisata_ahb_match(device_t parent, cfdata_t cf, void *aux)
     83 {
     84 	return wiiu_native;
     85 }
     86 
     87 static void
     88 ahcisata_ahb_attach(device_t parent, device_t self, void *aux)
     89 {
     90 	struct ahb_attach_args * const aaa = aux;
     91 	struct ahci_softc * const sc = device_private(self);
     92 
     93 	sc->sc_atac.atac_dev = self;
     94 	sc->sc_dmat = aaa->aaa_dmat;
     95 	sc->sc_ahcit = aaa->aaa_bst;
     96 	sc->sc_ahcis = 0x408;
     97 	if (bus_space_map(sc->sc_ahcit, aaa->aaa_addr, sc->sc_ahcis, 0,
     98 	    &sc->sc_ahcih) != 0) {
     99 		aprint_error(": couldn't map registers\n");
    100 		return;
    101 	}
    102 	sc->sc_ahci_ports = 0x3;
    103 	sc->sc_ahci_quirks |= AHCI_QUIRK_BADPMP;
    104 
    105 	aprint_naive("\n");
    106 	aprint_normal(": AHCI SATA controller\n");
    107 
    108 	WR4(sc, SATA_HCCFG_INT_REG, ~0U);
    109 	WR4(sc, SATA_HCCFG_INTMSK_REG, SATA_HCCFG_INT_PORT0 |
    110 				       SATA_HCCFG_INT_PORT1);
    111 
    112 	ahb_intr_establish(aaa->aaa_irq, IPL_BIO, ahcisata_ahb_intr, sc,
    113 	    device_xname(self));
    114 
    115 	ahci_attach(sc);
    116 }
    117 
    118 CFATTACH_DECL_NEW(ahcisata_ahb, sizeof(struct ahci_softc),
    119 	ahcisata_ahb_match, ahcisata_ahb_attach, NULL, NULL);
    120