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