ata-national.c revision 194893 
1/*-
2 * Copyright (c) 1998 - 2008 S�ren 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: head/sys/dev/ata/chipsets/ata-national.c 194893 2009-06-24 19:49:18Z mav $");
29
30#include "opt_ata.h"
31#include <sys/param.h>
32#include <sys/module.h>
33#include <sys/systm.h>
34#include <sys/kernel.h>
35#include <sys/ata.h>
36#include <sys/bus.h>
37#include <sys/endian.h>
38#include <sys/malloc.h>
39#include <sys/lock.h>
40#include <sys/mutex.h>
41#include <sys/sema.h>
42#include <sys/taskqueue.h>
43#include <vm/uma.h>
44#include <machine/stdarg.h>
45#include <machine/resource.h>
46#include <machine/bus.h>
47#include <sys/rman.h>
48#include <dev/pci/pcivar.h>
49#include <dev/pci/pcireg.h>
50#include <dev/ata/ata-all.h>
51#include <dev/ata/ata-pci.h>
52#include <ata_if.h>
53
54/* local prototypes */
55static int ata_national_chipinit(device_t dev);
56static void ata_national_setmode(device_t dev, int mode);
57
58
59/*
60 * National chipset support functions
61 */
62static int
63ata_national_probe(device_t dev)
64{
65    struct ata_pci_controller *ctlr = device_get_softc(dev);
66
67    /* this chip is a clone of the Cyrix chip, bugs and all */
68    if (pci_get_devid(dev) == ATA_SC1100) {
69	device_set_desc(dev, "National Geode SC1100 ATA33 controller");
70	ctlr->chipinit = ata_national_chipinit;
71	return (BUS_PROBE_DEFAULT);
72    }
73    return ENXIO;
74}
75
76static int
77ata_national_chipinit(device_t dev)
78{
79    struct ata_pci_controller *ctlr = device_get_softc(dev);
80
81    if (ata_setup_interrupt(dev, ata_generic_intr))
82	return ENXIO;
83
84    ctlr->setmode = ata_national_setmode;
85    return 0;
86}
87
88static void
89ata_national_setmode(device_t dev, int mode)
90{
91    device_t gparent = GRANDPARENT(dev);
92    struct ata_channel *ch = device_get_softc(device_get_parent(dev));
93    struct ata_device *atadev = device_get_softc(dev);
94    int devno = (ch->unit << 1) + atadev->unit;
95    u_int32_t piotiming[] =
96	{ 0x9172d132, 0x21717121, 0x00803020, 0x20102010, 0x00100010,
97	  0x00803020, 0x20102010, 0x00100010,
98	  0x00100010, 0x00100010, 0x00100010 };
99    u_int32_t dmatiming[] = { 0x80077771, 0x80012121, 0x80002020 };
100    u_int32_t udmatiming[] = { 0x80921250, 0x80911140, 0x80911030 };
101    int error;
102
103    ch->dma.alignment = 16;
104    ch->dma.max_iosize = 64 * DEV_BSIZE;
105
106    mode = ata_limit_mode(dev, mode, ATA_UDMA2);
107
108    error = ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode);
109
110    if (bootverbose)
111	device_printf(dev, "%s setting %s on National chip\n",
112		      (error) ? "failed" : "success", ata_mode2str(mode));
113    if (!error) {
114	if (mode >= ATA_UDMA0) {
115	    pci_write_config(gparent, 0x44 + (devno << 3),
116			     udmatiming[mode & ATA_MODE_MASK], 4);
117	}
118	else if (mode >= ATA_WDMA0) {
119	    pci_write_config(gparent, 0x44 + (devno << 3),
120			     dmatiming[mode & ATA_MODE_MASK], 4);
121	}
122	else {
123	    pci_write_config(gparent, 0x44 + (devno << 3),
124			     pci_read_config(gparent, 0x44 + (devno << 3), 4) |
125			     0x80000000, 4);
126	}
127	pci_write_config(gparent, 0x40 + (devno << 3),
128			 piotiming[ata_mode2idx(mode)], 4);
129	atadev->mode = mode;
130    }
131}
132
133ATA_DECLARE_DRIVER(ata_national);
134