ata.c revision 1.14 1 /* $NetBSD: ata.c,v 1.14 2001/11/13 12:53:09 lukem Exp $ */
2 /*
3 * Copyright (c) 1998 Manuel Bouyer. 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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Manuel Bouyer.
16 * 4. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: ata.c,v 1.14 2001/11/13 12:53:09 lukem Exp $");
33
34 #ifndef WDCDEBUG
35 #define WDCDEBUG
36 #endif /* WDCDEBUG */
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
41 #include <sys/file.h>
42 #include <sys/stat.h>
43 #include <sys/malloc.h>
44 #include <sys/device.h>
45 #include <sys/syslog.h>
46
47 #include <dev/ic/wdcreg.h>
48 #include <dev/ata/atareg.h>
49 #include <dev/ata/atavar.h>
50
51 #define DEBUG_FUNCS 0x08
52 #define DEBUG_PROBE 0x10
53 #ifdef WDCDEBUG
54 extern int wdcdebug_mask; /* init'ed in wdc.c */
55 #define WDCDEBUG_PRINT(args, level) \
56 if (wdcdebug_mask & (level)) \
57 printf args
58 #else
59 #define WDCDEBUG_PRINT(args, level)
60 #endif
61
62 /* Get the disk's parameters */
63 int
64 ata_get_params(drvp, flags, prms)
65 struct ata_drive_datas *drvp;
66 u_int8_t flags;
67 struct ataparams *prms;
68 {
69 char tb[DEV_BSIZE];
70 struct wdc_command wdc_c;
71
72 #if BYTE_ORDER == LITTLE_ENDIAN
73 int i;
74 u_int16_t *p;
75 #endif
76
77 WDCDEBUG_PRINT(("wdc_ata_get_parms\n"), DEBUG_FUNCS);
78
79 memset(tb, 0, DEV_BSIZE);
80 memset(prms, 0, sizeof(struct ataparams));
81 memset(&wdc_c, 0, sizeof(struct wdc_command));
82
83 if (drvp->drive_flags & DRIVE_ATA) {
84 wdc_c.r_command = WDCC_IDENTIFY;
85 wdc_c.r_st_bmask = WDCS_DRDY;
86 wdc_c.r_st_pmask = WDCS_DRQ;
87 wdc_c.timeout = 1000; /* 1s */
88 } else if (drvp->drive_flags & DRIVE_ATAPI) {
89 wdc_c.r_command = ATAPI_IDENTIFY_DEVICE;
90 wdc_c.r_st_bmask = 0;
91 wdc_c.r_st_pmask = WDCS_DRQ;
92 wdc_c.timeout = 10000; /* 10s */
93 } else {
94 WDCDEBUG_PRINT(("wdc_ata_get_parms: no disks\n"),
95 DEBUG_FUNCS|DEBUG_PROBE);
96 return CMD_ERR;
97 }
98 wdc_c.flags = AT_READ | flags;
99 wdc_c.data = tb;
100 wdc_c.bcount = DEV_BSIZE;
101 if (wdc_exec_command(drvp, &wdc_c) != WDC_COMPLETE) {
102 WDCDEBUG_PRINT(("wdc_ata_get_parms: wdc_exec_command failed\n"),
103 DEBUG_FUNCS|DEBUG_PROBE);
104 return CMD_AGAIN;
105 }
106 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {
107 WDCDEBUG_PRINT(("wdc_ata_get_parms: wdc_c.flags=0x%x\n",
108 wdc_c.flags), DEBUG_FUNCS|DEBUG_PROBE);
109 return CMD_ERR;
110 } else {
111 /* Read in parameter block. */
112 memcpy(prms, tb, sizeof(struct ataparams));
113 #if BYTE_ORDER == LITTLE_ENDIAN
114 /*
115 * Shuffle string byte order.
116 * ATAPI Mitsumi and NEC drives don't need this.
117 */
118 if ((prms->atap_config & WDC_CFG_ATAPI_MASK) ==
119 WDC_CFG_ATAPI &&
120 ((prms->atap_model[0] == 'N' &&
121 prms->atap_model[1] == 'E') ||
122 (prms->atap_model[0] == 'F' &&
123 prms->atap_model[1] == 'X')))
124 return 0;
125 for (i = 0; i < sizeof(prms->atap_model); i += 2) {
126 p = (u_short *)(prms->atap_model + i);
127 *p = ntohs(*p);
128 }
129 for (i = 0; i < sizeof(prms->atap_serial); i += 2) {
130 p = (u_short *)(prms->atap_serial + i);
131 *p = ntohs(*p);
132 }
133 for (i = 0; i < sizeof(prms->atap_revision); i += 2) {
134 p = (u_short *)(prms->atap_revision + i);
135 *p = ntohs(*p);
136 }
137 #endif
138 return CMD_OK;
139 }
140 }
141
142 int
143 ata_set_mode(drvp, mode, flags)
144 struct ata_drive_datas *drvp;
145 u_int8_t mode;
146 u_int8_t flags;
147 {
148 struct wdc_command wdc_c;
149
150 WDCDEBUG_PRINT(("wdc_ata_set_mode=0x%x\n", mode), DEBUG_FUNCS);
151 memset(&wdc_c, 0, sizeof(struct wdc_command));
152
153 wdc_c.r_command = SET_FEATURES;
154 wdc_c.r_st_bmask = 0;
155 wdc_c.r_st_pmask = 0;
156 wdc_c.r_precomp = WDSF_SET_MODE;
157 wdc_c.r_count = mode;
158 wdc_c.flags = AT_READ | flags;
159 wdc_c.timeout = 1000; /* 1s */
160 if (wdc_exec_command(drvp, &wdc_c) != WDC_COMPLETE)
161 return CMD_AGAIN;
162 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) {
163 return CMD_ERR;
164 }
165 return CMD_OK;
166 }
167
168 void
169 ata_dmaerr(drvp)
170 struct ata_drive_datas *drvp;
171 {
172 /*
173 * Downgrade decision: if we get NERRS_MAX in NXFER.
174 * We start with n_dmaerrs set to NERRS_MAX-1 so that the
175 * first error within the first NXFER ops will immediatly trigger
176 * a downgrade.
177 * If we got an error and n_xfers is bigger than NXFER reset counters.
178 */
179 drvp->n_dmaerrs++;
180 if (drvp->n_dmaerrs >= NERRS_MAX && drvp->n_xfers <= NXFER) {
181 wdc_downgrade_mode(drvp);
182 drvp->n_dmaerrs = NERRS_MAX-1;
183 drvp->n_xfers = 0;
184 return;
185 }
186 if (drvp->n_xfers > NXFER) {
187 drvp->n_dmaerrs = 1; /* just got an error */
188 drvp->n_xfers = 1; /* restart counting from this error */
189 }
190 }
191
192 void
193 ata_perror(drvp, errno, buf)
194 struct ata_drive_datas *drvp;
195 int errno;
196 char *buf;
197 {
198 static char *errstr0_3[] = {"address mark not found",
199 "track 0 not found", "aborted command", "media change requested",
200 "id not found", "media changed", "uncorrectable data error",
201 "bad block detected"};
202 static char *errstr4_5[] = {"obsolete (address mark not found)",
203 "no media/write protected", "aborted command",
204 "media change requested", "id not found", "media changed",
205 "uncorrectable data error", "interface CRC error"};
206 char **errstr;
207 int i;
208 char *sep = "";
209
210 if (drvp->ata_vers >= 4)
211 errstr = errstr4_5;
212 else
213 errstr = errstr0_3;
214
215 if (errno == 0) {
216 sprintf(buf, "error not notified");
217 }
218
219 for (i = 0; i < 8; i++) {
220 if (errno & (1 << i)) {
221 buf += sprintf(buf, "%s%s", sep, errstr[i]);
222 sep = ", ";
223 }
224 }
225 }
226