1/*-
2 * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
14 *
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.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/module.h>
32#include <sys/systm.h>
33#include <sys/kernel.h>
34#include <sys/ata.h>
35#include <sys/bus.h>
36#include <sys/endian.h>
37#include <sys/malloc.h>
38#include <sys/lock.h>
39#include <sys/mutex.h>
40#include <sys/sema.h>
41#include <sys/taskqueue.h>
42#include <vm/uma.h>
43#include <machine/stdarg.h>
44#include <machine/resource.h>
45#include <machine/bus.h>
46#include <sys/rman.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>
51#include <ata_if.h>
52
53/* local prototypes */
54static int ata_national_chipinit(device_t dev);
55static int ata_national_ch_attach(device_t dev);
56static int ata_national_setmode(device_t dev, int target, int mode);
57
58/*
59 * National chipset support functions
60 */
61static int
62ata_national_probe(device_t dev)
63{
64    struct ata_pci_controller *ctlr = device_get_softc(dev);
65
66    /* this chip is a clone of the Cyrix chip, bugs and all */
67    if (pci_get_devid(dev) == ATA_SC1100) {
68	device_set_desc(dev, "National Geode SC1100 ATA33 controller");
69	ctlr->chipinit = ata_national_chipinit;
70	return (BUS_PROBE_LOW_PRIORITY);
71    }
72    return ENXIO;
73}
74
75static int
76ata_national_chipinit(device_t dev)
77{
78    struct ata_pci_controller *ctlr = device_get_softc(dev);
79
80    if (ata_setup_interrupt(dev, ata_generic_intr))
81	return ENXIO;
82
83    ctlr->ch_attach = ata_national_ch_attach;
84    ctlr->setmode = ata_national_setmode;
85    return 0;
86}
87
88static int
89ata_national_ch_attach(device_t dev)
90{
91	struct ata_channel *ch = device_get_softc(dev);
92
93	ch->dma.alignment = 16;
94	ch->dma.max_iosize = 64 * DEV_BSIZE;
95	return (ata_pci_ch_attach(dev));
96}
97
98static int
99ata_national_setmode(device_t dev, int target, int mode)
100{
101	device_t parent = device_get_parent(dev);
102	struct ata_channel *ch = device_get_softc(dev);
103	int devno = (ch->unit << 1) + target;
104	int piomode;
105	static const uint32_t piotiming[] =
106	    { 0x9172d132, 0x21717121, 0x00803020, 0x20102010, 0x00100010,
107	      0x9172d132, 0x20102010, 0x00100010 };
108	static const uint32_t dmatiming[] =
109	    { 0x80077771, 0x80012121, 0x80002020 };
110	static const uint32_t udmatiming[] =
111	    { 0x80921250, 0x80911140, 0x80911030 };
112
113	mode = min(mode, ATA_UDMA2);
114
115	if (mode >= ATA_UDMA0) {
116	    pci_write_config(parent, 0x44 + (devno << 3),
117			     udmatiming[mode & ATA_MODE_MASK], 4);
118	    piomode = ATA_PIO4;
119	} else if (mode >= ATA_WDMA0) {
120	    pci_write_config(parent, 0x44 + (devno << 3),
121			     dmatiming[mode & ATA_MODE_MASK], 4);
122	    piomode = mode;
123	} else {
124	    pci_write_config(parent, 0x44 + (devno << 3),
125			     pci_read_config(parent, 0x44 + (devno << 3), 4) |
126			     0x80000000, 4);
127	    piomode = mode;
128	}
129	pci_write_config(parent, 0x40 + (devno << 3),
130			 piotiming[ata_mode2idx(piomode)], 4);
131	return (mode);
132}
133
134ATA_DECLARE_DRIVER(ata_national);
135