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: head/sys/dev/ata/chipsets/ata-acard.c 200171 2009-12-06 00:10:13Z 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 struct ata_serialize {
55 struct mtx locked_mtx;
56 int locked_ch;
57 int restart_ch;
58 };
59
60 /* local prototypes */
61 static int ata_acard_chipinit(device_t dev);
62 static int ata_acard_ch_attach(device_t dev);
63 static int ata_acard_status(device_t dev);
64 static int ata_acard_850_setmode(device_t dev, int target, int mode);
65 static int ata_acard_86X_setmode(device_t dev, int target, int mode);
66 static int ata_serialize(device_t dev, int flags);
67 static void ata_serialize_init(struct ata_serialize *serial);
68
69 /* misc defines */
70 #define ATP_OLD 1
71
72
73 /*
74 * Acard chipset support functions
75 */
76 static int
77 ata_acard_probe(device_t dev)
78 {
79 struct ata_pci_controller *ctlr = device_get_softc(dev);
80 static struct ata_chip_id ids[] =
81 {{ ATA_ATP850R, 0, ATP_OLD, 0x00, ATA_UDMA2, "ATP850" },
82 { ATA_ATP860A, 0, 0, 0x00, ATA_UDMA4, "ATP860A" },
83 { ATA_ATP860R, 0, 0, 0x00, ATA_UDMA4, "ATP860R" },
84 { ATA_ATP865A, 0, 0, 0x00, ATA_UDMA6, "ATP865A" },
85 { ATA_ATP865R, 0, 0, 0x00, ATA_UDMA6, "ATP865R" },
86 { 0, 0, 0, 0, 0, 0}};
87
88 if (pci_get_vendor(dev) != ATA_ACARD_ID)
89 return ENXIO;
90
91 if (!(ctlr->chip = ata_match_chip(dev, ids)))
92 return ENXIO;
93
94 ata_set_desc(dev);
95 ctlr->chipinit = ata_acard_chipinit;
96 return (BUS_PROBE_DEFAULT);
97 }
98
99 static int
100 ata_acard_chipinit(device_t dev)
101 {
102 struct ata_pci_controller *ctlr = device_get_softc(dev);
103 struct ata_serialize *serial;
104
105 if (ata_setup_interrupt(dev, ata_generic_intr))
106 return ENXIO;
107
108 ctlr->ch_attach = ata_acard_ch_attach;
109 ctlr->ch_detach = ata_pci_ch_detach;
110 if (ctlr->chip->cfg1 == ATP_OLD) {
111 ctlr->setmode = ata_acard_850_setmode;
112 ctlr->locking = ata_serialize;
113 serial = malloc(sizeof(struct ata_serialize),
114 M_TEMP, M_WAITOK | M_ZERO);
115 ata_serialize_init(serial);
116 ctlr->chipset_data = serial;
117 }
118 else
119 ctlr->setmode = ata_acard_86X_setmode;
120 return 0;
121 }
122
123 static int
124 ata_acard_ch_attach(device_t dev)
125 {
126 struct ata_channel *ch = device_get_softc(dev);
127
128 /* setup the usual register normal pci style */
129 if (ata_pci_ch_attach(dev))
130 return ENXIO;
131
132 ch->hw.status = ata_acard_status;
133 ch->flags |= ATA_NO_ATAPI_DMA;
134 return 0;
135 }
136
137 static int
138 ata_acard_status(device_t dev)
139 {
140 struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
141 struct ata_channel *ch = device_get_softc(dev);
142
143 if (ctlr->chip->cfg1 == ATP_OLD &&
144 ATA_LOCKING(dev, ATA_LF_WHICH) != ch->unit)
145 return 0;
146 if (ch->dma.flags & ATA_DMA_ACTIVE) {
147 int bmstat = ATA_IDX_INB(ch, ATA_BMSTAT_PORT) & ATA_BMSTAT_MASK;
148
149 if ((bmstat & (ATA_BMSTAT_ACTIVE | ATA_BMSTAT_INTERRUPT)) !=
150 ATA_BMSTAT_INTERRUPT)
151 return 0;
152 ATA_IDX_OUTB(ch, ATA_BMSTAT_PORT, bmstat & ~ATA_BMSTAT_ERROR);
153 DELAY(1);
154 ATA_IDX_OUTB(ch, ATA_BMCMD_PORT,
155 ATA_IDX_INB(ch, ATA_BMCMD_PORT) & ~ATA_BMCMD_START_STOP);
156 DELAY(1);
157 }
158 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY) {
159 DELAY(100);
160 if (ATA_IDX_INB(ch, ATA_ALTSTAT) & ATA_S_BUSY)
161 return 0;
162 }
163 return 1;
164 }
165
166 static int
167 ata_acard_850_setmode(device_t dev, int target, int mode)
168 {
169 device_t parent = device_get_parent(dev);
170 struct ata_pci_controller *ctlr = device_get_softc(parent);
171 struct ata_channel *ch = device_get_softc(dev);
172 int devno = (ch->unit << 1) + target;
173
174 mode = min(mode, ctlr->chip->max_dma);
175 /* XXX SOS missing WDMA0+1 + PIO modes */
176 if (mode >= ATA_WDMA2) {
177 u_int8_t reg54 = pci_read_config(parent, 0x54, 1);
178
179 reg54 &= ~(0x03 << (devno << 1));
180 if (mode >= ATA_UDMA0)
181 reg54 |= (((mode & ATA_MODE_MASK) + 1) << (devno << 1));
182 pci_write_config(parent, 0x54, reg54, 1);
183 pci_write_config(parent, 0x4a, 0xa6, 1);
184 pci_write_config(parent, 0x40 + (devno << 1), 0x0301, 2);
185 }
186 /* we could set PIO mode timings, but we assume the BIOS did that */
187 return (mode);
188 }
189
190 static int
191 ata_acard_86X_setmode(device_t dev, int target, int mode)
192 {
193 device_t parent = device_get_parent(dev);
194 struct ata_pci_controller *ctlr = device_get_softc(parent);
195 struct ata_channel *ch = device_get_softc(dev);
196 int devno = (ch->unit << 1) + target;
197
198 mode = min(mode, ctlr->chip->max_dma);
199 /* XXX SOS missing WDMA0+1 + PIO modes */
200 if (mode >= ATA_WDMA2) {
201 u_int16_t reg44 = pci_read_config(parent, 0x44, 2);
202
203 reg44 &= ~(0x000f << (devno << 2));
204 if (mode >= ATA_UDMA0)
205 reg44 |= (((mode & ATA_MODE_MASK) + 1) << (devno << 2));
206 pci_write_config(parent, 0x44, reg44, 2);
207 pci_write_config(parent, 0x4a, 0xa6, 1);
208 pci_write_config(parent, 0x40 + devno, 0x31, 1);
209 }
210 /* we could set PIO mode timings, but we assume the BIOS did that */
211 return (mode);
212 }
213
214 static void
215 ata_serialize_init(struct ata_serialize *serial)
216 {
217
218 mtx_init(&serial->locked_mtx, "ATA serialize lock", NULL, MTX_DEF);
219 serial->locked_ch = -1;
220 serial->restart_ch = -1;
221 }
222
223 static int
224 ata_serialize(device_t dev, int flags)
225 {
226 struct ata_pci_controller *ctlr = device_get_softc(device_get_parent(dev));
227 struct ata_channel *ch = device_get_softc(dev);
228 struct ata_serialize *serial;
229 int res;
230
231 serial = ctlr->chipset_data;
232
233 mtx_lock(&serial->locked_mtx);
234 switch (flags) {
235 case ATA_LF_LOCK:
236 if (serial->locked_ch == -1)
237 serial->locked_ch = ch->unit;
238 if (serial->locked_ch != ch->unit)
239 serial->restart_ch = ch->unit;
240 break;
241
242 case ATA_LF_UNLOCK:
243 if (serial->locked_ch == ch->unit) {
244 serial->locked_ch = -1;
245 if (serial->restart_ch != -1) {
246 if ((ch = ctlr->interrupt[serial->restart_ch].argument)) {
247 serial->restart_ch = -1;
248 mtx_unlock(&serial->locked_mtx);
249 ata_start(dev);
250 return -1;
251 }
252 }
253 }
254 break;
255
256 case ATA_LF_WHICH:
257 break;
258 }
259 res = serial->locked_ch;
260 mtx_unlock(&serial->locked_mtx);
261 return res;
262 }
263
264 ATA_DECLARE_DRIVER(ata_acard);
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