2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/module.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
38 #include <sys/endian.h>
39 #include <sys/malloc.h>
41 #include <sys/mutex.h>
43 #include <sys/taskqueue.h>
45 #include <machine/stdarg.h>
46 #include <machine/resource.h>
47 #include <machine/bus.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>
55 /* local prototypes */
56 static int ata_cypress_chipinit(device_t dev);
57 static int ata_cypress_setmode(device_t dev, int target, int mode);
61 * Cypress chipset support functions
64 ata_cypress_probe(device_t dev)
66 struct ata_pci_controller *ctlr = device_get_softc(dev);
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.
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);
86 ata_cypress_chipinit(device_t dev)
88 struct ata_pci_controller *ctlr = device_get_softc(dev);
90 if (ata_setup_interrupt(dev, ata_generic_intr))
93 ctlr->setmode = ata_cypress_setmode;
98 ata_cypress_setmode(device_t dev, int target, int mode)
100 device_t parent = device_get_parent(dev);
101 struct ata_channel *ch = device_get_softc(dev);
103 mode = min(mode, ATA_WDMA2);
105 /* XXX SOS missing WDMA0+1 + PIO modes */
106 if (mode == ATA_WDMA2) {
107 pci_write_config(parent, ch->unit ? 0x4e : 0x4c, 0x2020, 2);
109 /* we could set PIO mode timings, but we assume the BIOS did that */
113 ATA_DECLARE_DRIVER(ata_cypress);