1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1998 - 2008 S��ren Schmidt <sos@FreeBSD.org>
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 *    without modification, immediately at the beginning of the file.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/module.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/ata.h>
37#include <sys/bus.h>
38#include <sys/endian.h>
39#include <sys/malloc.h>
40#include <sys/lock.h>
41#include <sys/mutex.h>
42#include <sys/sema.h>
43#include <sys/taskqueue.h>
44#include <vm/uma.h>
45#include <machine/stdarg.h>
46#include <machine/resource.h>
47#include <machine/bus.h>
48#include <sys/rman.h>
49#include <dev/pci/pcivar.h>
50#include <dev/pci/pcireg.h>
51#include <dev/ata/ata-all.h>
52#include <dev/ata/ata-pci.h>
53#include <ata_if.h>
54
55/* local prototypes */
56static int ata_cypress_chipinit(device_t dev);
57static int ata_cypress_setmode(device_t dev, int target, int mode);
58
59
60/*
61 * Cypress chipset support functions
62 */
63static int
64ata_cypress_probe(device_t dev)
65{
66    struct ata_pci_controller *ctlr = device_get_softc(dev);
67
68    /*
69     * the Cypress chip is a mess, it contains two ATA functions, but
70     * both channels are visible on the first one.
71     * simply ignore the second function for now, as the right
72     * solution (ignoring the second channel on the first function)
73     * doesn't work with the crappy ATA interrupt setup on the alpha.
74     */
75    if (pci_get_devid(dev) == ATA_CYPRESS_82C693 &&
76	pci_get_function(dev) == 1 &&
77	pci_get_subclass(dev) == PCIS_STORAGE_IDE) {
78	device_set_desc(dev, "Cypress 82C693 ATA controller");
79	ctlr->chipinit = ata_cypress_chipinit;
80	return (BUS_PROBE_LOW_PRIORITY);
81    }
82    return ENXIO;
83}
84
85static int
86ata_cypress_chipinit(device_t dev)
87{
88    struct ata_pci_controller *ctlr = device_get_softc(dev);
89
90    if (ata_setup_interrupt(dev, ata_generic_intr))
91	return ENXIO;
92
93    ctlr->setmode = ata_cypress_setmode;
94    return 0;
95}
96
97static int
98ata_cypress_setmode(device_t dev, int target, int mode)
99{
100	device_t parent = device_get_parent(dev);
101	struct ata_channel *ch = device_get_softc(dev);
102
103	mode = min(mode, ATA_WDMA2);
104
105	/* XXX SOS missing WDMA0+1 + PIO modes */
106	if (mode == ATA_WDMA2) {
107		pci_write_config(parent, ch->unit ? 0x4e : 0x4c, 0x2020, 2);
108	}
109	/* we could set PIO mode timings, but we assume the BIOS did that */
110	return (mode);
111}
112
113ATA_DECLARE_DRIVER(ata_cypress);
114