1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1998 - 2008 Søren 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 */
53 static int ata_cypress_chipinit(device_t dev);
54 static int ata_cypress_setmode(device_t dev, int target, int mode);
55
56 /*
57 * Cypress chipset support functions
58 */
59 static int
ata_cypress_probe(device_t dev)60 ata_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
81 static int
ata_cypress_chipinit(device_t dev)82 ata_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
93 static int
ata_cypress_setmode(device_t dev,int target,int mode)94 ata_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
109 ATA_DECLARE_DRIVER(ata_cypress);
110