1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1998 - 2008 S��ren 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/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/module.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/ata.h>
37#include <sys/bus.h>
38#include <sys/endian.h>
39#include <sys/malloc.h>
40#include <sys/lock.h>
41#include <sys/mutex.h>
42#include <sys/sema.h>
43#include <sys/taskqueue.h>
44#include <vm/uma.h>
45#include <machine/stdarg.h>
46#include <machine/resource.h>
47#include <machine/bus.h>
48#include <sys/rman.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>
53#include <ata_if.h>
54
55/* local prototypes */
56static int ata_amd_ch_attach(device_t dev);
57static int ata_amd_chipinit(device_t dev);
58static int ata_amd_setmode(device_t dev, int target, int mode);
59
60/* misc defines */
61#define AMD_BUG		0x01
62#define AMD_CABLE	0x02
63
64/*
65 * Advanced Micro Devices (AMD) chipset support functions
66 */
67static int
68ata_amd_probe(device_t dev)
69{
70    struct ata_pci_controller *ctlr = device_get_softc(dev);
71    static const struct ata_chip_id ids[] =
72    {{ ATA_AMD756,  0x00, 0x00,              0, ATA_UDMA4, "756" },
73     { ATA_AMD766,  0x00, AMD_CABLE|AMD_BUG, 0, ATA_UDMA5, "766" },
74     { ATA_AMD768,  0x00, AMD_CABLE,         0, ATA_UDMA5, "768" },
75     { ATA_AMD8111, 0x00, AMD_CABLE,         0, ATA_UDMA6, "8111" },
76     { ATA_AMD5536, 0x00, 0x00,              0, ATA_UDMA5, "CS5536" },
77     { 0, 0, 0, 0, 0, 0}};
78
79    if (pci_get_vendor(dev) != ATA_AMD_ID)
80	return ENXIO;
81
82    if (!(ctlr->chip = ata_match_chip(dev, ids)))
83	return ENXIO;
84
85    ata_set_desc(dev);
86    ctlr->chipinit = ata_amd_chipinit;
87    return (BUS_PROBE_LOW_PRIORITY);
88}
89
90static int
91ata_amd_chipinit(device_t dev)
92{
93    struct ata_pci_controller *ctlr = device_get_softc(dev);
94
95    if (ata_setup_interrupt(dev, ata_generic_intr))
96	return ENXIO;
97
98    /* disable/set prefetch, postwrite */
99    if (ctlr->chip->cfg1 & AMD_BUG)
100	pci_write_config(dev, 0x41, pci_read_config(dev, 0x41, 1) & 0x0f, 1);
101    else
102	pci_write_config(dev, 0x41, pci_read_config(dev, 0x41, 1) | 0xf0, 1);
103
104    ctlr->ch_attach = ata_amd_ch_attach;
105    ctlr->setmode = ata_amd_setmode;
106    return 0;
107}
108
109static int
110ata_amd_setmode(device_t dev, int target, int mode)
111{
112	device_t parent = device_get_parent(dev);
113	struct ata_pci_controller *ctlr = device_get_softc(parent);
114	struct ata_channel *ch = device_get_softc(dev);
115        int devno = (ch->unit << 1) + target;
116	int piomode;
117	static const uint8_t timings[] =
118	    { 0xa8, 0x65, 0x42, 0x22, 0x20, 0xa8, 0x22, 0x20 };
119	static const uint8_t modes[] =
120	    { 0xc2, 0xc1, 0xc0, 0xc4, 0xc5, 0xc6, 0xc7 };
121	int reg = 0x53 - devno;
122
123	mode = min(mode, ctlr->chip->max_dma);
124	if (ctlr->chip->cfg1 & AMD_CABLE) {
125		if (ata_dma_check_80pin && mode > ATA_UDMA2 &&
126		    !(pci_read_config(parent, 0x42, 1) & (1 << devno))) {
127			ata_print_cable(dev, "controller");
128			mode = ATA_UDMA2;
129		}
130	}
131	/* Set UDMA timings. */
132	if (mode >= ATA_UDMA0) {
133	    pci_write_config(parent, reg, modes[mode & ATA_MODE_MASK], 1);
134	    piomode = ATA_PIO4;
135	} else {
136	    pci_write_config(parent, reg, 0x8b, 1);
137	    piomode = mode;
138	}
139	/* Set WDMA/PIO timings. */
140	pci_write_config(parent, reg - 0x08, timings[ata_mode2idx(piomode)], 1);
141	return (mode);
142}
143
144static int
145ata_amd_ch_attach(device_t dev)
146{
147	struct ata_pci_controller *ctlr;
148	struct ata_channel *ch;
149	int error;
150
151	ctlr = device_get_softc(device_get_parent(dev));
152	ch = device_get_softc(dev);
153	error = ata_pci_ch_attach(dev);
154	if (ctlr->chip->cfg1 & AMD_CABLE)
155		ch->flags |= ATA_CHECKS_CABLE;
156	return (error);
157}
158
159ATA_DECLARE_DRIVER(ata_amd);
160