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_amd_ch_attach(device_t dev);
54 static int ata_amd_chipinit(device_t dev);
55 static int ata_amd_setmode(device_t dev, int target, int mode);
56
57 /* misc defines */
58 #define AMD_BUG 0x01
59 #define AMD_CABLE 0x02
60
61 /*
62 * Advanced Micro Devices (AMD) chipset support functions
63 */
64 static int
ata_amd_probe(device_t dev)65 ata_amd_probe(device_t dev)
66 {
67 struct ata_pci_controller *ctlr = device_get_softc(dev);
68 static const struct ata_chip_id ids[] =
69 {{ ATA_AMD756, 0x00, 0x00, 0, ATA_UDMA4, "756" },
70 { ATA_AMD766, 0x00, AMD_CABLE|AMD_BUG, 0, ATA_UDMA5, "766" },
71 { ATA_AMD768, 0x00, AMD_CABLE, 0, ATA_UDMA5, "768" },
72 { ATA_AMD8111, 0x00, AMD_CABLE, 0, ATA_UDMA6, "8111" },
73 { ATA_AMD5536, 0x00, 0x00, 0, ATA_UDMA5, "CS5536" },
74 { 0, 0, 0, 0, 0, 0}};
75
76 if (pci_get_vendor(dev) != ATA_AMD_ID)
77 return ENXIO;
78
79 if (!(ctlr->chip = ata_match_chip(dev, ids)))
80 return ENXIO;
81
82 ata_set_desc(dev);
83 ctlr->chipinit = ata_amd_chipinit;
84 return (BUS_PROBE_LOW_PRIORITY);
85 }
86
87 static int
ata_amd_chipinit(device_t dev)88 ata_amd_chipinit(device_t dev)
89 {
90 struct ata_pci_controller *ctlr = device_get_softc(dev);
91
92 if (ata_setup_interrupt(dev, ata_generic_intr))
93 return ENXIO;
94
95 /* disable/set prefetch, postwrite */
96 if (ctlr->chip->cfg1 & AMD_BUG)
97 pci_write_config(dev, 0x41, pci_read_config(dev, 0x41, 1) & 0x0f, 1);
98 else
99 pci_write_config(dev, 0x41, pci_read_config(dev, 0x41, 1) | 0xf0, 1);
100
101 ctlr->ch_attach = ata_amd_ch_attach;
102 ctlr->setmode = ata_amd_setmode;
103 return 0;
104 }
105
106 static int
ata_amd_setmode(device_t dev,int target,int mode)107 ata_amd_setmode(device_t dev, int target, int mode)
108 {
109 device_t parent = device_get_parent(dev);
110 struct ata_pci_controller *ctlr = device_get_softc(parent);
111 struct ata_channel *ch = device_get_softc(dev);
112 int devno = (ch->unit << 1) + target;
113 int piomode;
114 static const uint8_t timings[] =
115 { 0xa8, 0x65, 0x42, 0x22, 0x20, 0xa8, 0x22, 0x20 };
116 static const uint8_t modes[] =
117 { 0xc2, 0xc1, 0xc0, 0xc4, 0xc5, 0xc6, 0xc7 };
118 int reg = 0x53 - devno;
119
120 mode = min(mode, ctlr->chip->max_dma);
121 if (ctlr->chip->cfg1 & AMD_CABLE) {
122 if (ata_dma_check_80pin && mode > ATA_UDMA2 &&
123 !(pci_read_config(parent, 0x42, 1) & (1 << devno))) {
124 ata_print_cable(dev, "controller");
125 mode = ATA_UDMA2;
126 }
127 }
128 /* Set UDMA timings. */
129 if (mode >= ATA_UDMA0) {
130 pci_write_config(parent, reg, modes[mode & ATA_MODE_MASK], 1);
131 piomode = ATA_PIO4;
132 } else {
133 pci_write_config(parent, reg, 0x8b, 1);
134 piomode = mode;
135 }
136 /* Set WDMA/PIO timings. */
137 pci_write_config(parent, reg - 0x08, timings[ata_mode2idx(piomode)], 1);
138 return (mode);
139 }
140
141 static int
ata_amd_ch_attach(device_t dev)142 ata_amd_ch_attach(device_t dev)
143 {
144 struct ata_pci_controller *ctlr;
145 struct ata_channel *ch;
146 int error;
147
148 ctlr = device_get_softc(device_get_parent(dev));
149 ch = device_get_softc(dev);
150 error = ata_pci_ch_attach(dev);
151 if (ctlr->chip->cfg1 & AMD_CABLE)
152 ch->flags |= ATA_CHECKS_CABLE;
153 return (error);
154 }
155
156 ATA_DECLARE_DRIVER(ata_amd);
157