1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
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/param.h>
30#include <sys/module.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/ata.h>
34#include <sys/bus.h>
35#include <sys/endian.h>
36#include <sys/malloc.h>
37#include <sys/lock.h>
38#include <sys/mutex.h>
39#include <sys/sema.h>
40#include <sys/taskqueue.h>
41#include <vm/uma.h>
42#include <machine/stdarg.h>
43#include <machine/resource.h>
44#include <machine/bus.h>
45#include <sys/rman.h>
46#include <dev/pci/pcivar.h>
47#include <dev/pci/pcireg.h>
48#include <dev/ata/ata-all.h>
49#include <dev/ata/ata-pci.h>
50#include <ata_if.h>
51
52/* local prototypes */
53static int ata_cypress_chipinit(device_t dev);
54static int ata_cypress_setmode(device_t dev, int target, int mode);
55
56/*
57 * Cypress chipset support functions
58 */
59static int
60ata_cypress_probe(device_t dev)
61{
62    struct ata_pci_controller *ctlr = device_get_softc(dev);
63
64    /*
65     * the Cypress chip is a mess, it contains two ATA functions, but
66     * both channels are visible on the first one.
67     * simply ignore the second function for now, as the right
68     * solution (ignoring the second channel on the first function)
69     * doesn't work with the crappy ATA interrupt setup on the alpha.
70     */
71    if (pci_get_devid(dev) == ATA_CYPRESS_82C693 &&
72	pci_get_function(dev) == 1 &&
73	pci_get_subclass(dev) == PCIS_STORAGE_IDE) {
74	device_set_desc(dev, "Cypress 82C693 ATA controller");
75	ctlr->chipinit = ata_cypress_chipinit;
76	return (BUS_PROBE_LOW_PRIORITY);
77    }
78    return ENXIO;
79}
80
81static int
82ata_cypress_chipinit(device_t dev)
83{
84    struct ata_pci_controller *ctlr = device_get_softc(dev);
85
86    if (ata_setup_interrupt(dev, ata_generic_intr))
87	return ENXIO;
88
89    ctlr->setmode = ata_cypress_setmode;
90    return 0;
91}
92
93static int
94ata_cypress_setmode(device_t dev, int target, int mode)
95{
96	device_t parent = device_get_parent(dev);
97	struct ata_channel *ch = device_get_softc(dev);
98
99	mode = min(mode, ATA_WDMA2);
100
101	/* XXX SOS missing WDMA0+1 + PIO modes */
102	if (mode == ATA_WDMA2) {
103		pci_write_config(parent, ch->unit ? 0x4e : 0x4c, 0x2020, 2);
104	}
105	/* we could set PIO mode timings, but we assume the BIOS did that */
106	return (mode);
107}
108
109ATA_DECLARE_DRIVER(ata_cypress);
110