ata.c revision 1.12
1 /* $NetBSD: ata.c,v 1.12 2000/01/25 09:33:12 enami 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 #ifndef WDCDEBUG 32 #define WDCDEBUG 33 #endif /* WDCDEBUG */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/file.h> 39 #include <sys/stat.h> 40 #include <sys/malloc.h> 41 #include <sys/device.h> 42 #include <sys/syslog.h> 43 44 #include <dev/ic/wdcreg.h> 45 #include <dev/ata/atareg.h> 46 #include <dev/ata/atavar.h> 47 48 #define DEBUG_FUNCS 0x08 49 #define DEBUG_PROBE 0x10 50 #ifdef WDCDEBUG 51 extern int wdcdebug_mask; /* init'ed in wdc.c */ 52 #define WDCDEBUG_PRINT(args, level) \ 53 if (wdcdebug_mask & (level)) \ 54 printf args 55 #else 56 #define WDCDEBUG_PRINT(args, level) 57 #endif 58 59 /* Get the disk's parameters */ 60 int 61 ata_get_params(drvp, flags, prms) 62 struct ata_drive_datas *drvp; 63 u_int8_t flags; 64 struct ataparams *prms; 65 { 66 char tb[DEV_BSIZE]; 67 struct wdc_command wdc_c; 68 69 #if BYTE_ORDER == LITTLE_ENDIAN 70 int i; 71 u_int16_t *p; 72 #endif 73 74 WDCDEBUG_PRINT(("wdc_ata_get_parms\n"), DEBUG_FUNCS); 75 76 memset(tb, 0, DEV_BSIZE); 77 memset(prms, 0, sizeof(struct ataparams)); 78 memset(&wdc_c, 0, sizeof(struct wdc_command)); 79 80 if (drvp->drive_flags & DRIVE_ATA) { 81 wdc_c.r_command = WDCC_IDENTIFY; 82 wdc_c.r_st_bmask = WDCS_DRDY; 83 wdc_c.r_st_pmask = WDCS_DRQ; 84 wdc_c.timeout = 1000; /* 1s */ 85 } else if (drvp->drive_flags & DRIVE_ATAPI) { 86 wdc_c.r_command = ATAPI_IDENTIFY_DEVICE; 87 wdc_c.r_st_bmask = 0; 88 wdc_c.r_st_pmask = WDCS_DRQ; 89 wdc_c.timeout = 10000; /* 10s */ 90 } else { 91 WDCDEBUG_PRINT(("wdc_ata_get_parms: no disks\n"), 92 DEBUG_FUNCS|DEBUG_PROBE); 93 return CMD_ERR; 94 } 95 wdc_c.flags = AT_READ | flags; 96 wdc_c.data = tb; 97 wdc_c.bcount = DEV_BSIZE; 98 if (wdc_exec_command(drvp, &wdc_c) != WDC_COMPLETE) { 99 WDCDEBUG_PRINT(("wdc_ata_get_parms: wdc_exec_command failed\n"), 100 DEBUG_FUNCS|DEBUG_PROBE); 101 return CMD_AGAIN; 102 } 103 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 104 WDCDEBUG_PRINT(("wdc_ata_get_parms: wdc_c.flags=0x%x\n", 105 wdc_c.flags), DEBUG_FUNCS|DEBUG_PROBE); 106 return CMD_ERR; 107 } else { 108 /* Read in parameter block. */ 109 memcpy(prms, tb, sizeof(struct ataparams)); 110 #if BYTE_ORDER == LITTLE_ENDIAN 111 /* 112 * Shuffle string byte order. 113 * ATAPI Mitsumi and NEC drives don't need this. 114 */ 115 if ((prms->atap_config & WDC_CFG_ATAPI_MASK) == 116 WDC_CFG_ATAPI && 117 ((prms->atap_model[0] == 'N' && 118 prms->atap_model[1] == 'E') || 119 (prms->atap_model[0] == 'F' && 120 prms->atap_model[1] == 'X'))) 121 return 0; 122 for (i = 0; i < sizeof(prms->atap_model); i += 2) { 123 p = (u_short *)(prms->atap_model + i); 124 *p = ntohs(*p); 125 } 126 for (i = 0; i < sizeof(prms->atap_serial); i += 2) { 127 p = (u_short *)(prms->atap_serial + i); 128 *p = ntohs(*p); 129 } 130 for (i = 0; i < sizeof(prms->atap_revision); i += 2) { 131 p = (u_short *)(prms->atap_revision + i); 132 *p = ntohs(*p); 133 } 134 #endif 135 return CMD_OK; 136 } 137 } 138 139 int 140 ata_set_mode(drvp, mode, flags) 141 struct ata_drive_datas *drvp; 142 u_int8_t mode; 143 u_int8_t flags; 144 { 145 struct wdc_command wdc_c; 146 147 WDCDEBUG_PRINT(("wdc_ata_set_mode=0x%x\n", mode), DEBUG_FUNCS); 148 memset(&wdc_c, 0, sizeof(struct wdc_command)); 149 150 wdc_c.r_command = SET_FEATURES; 151 wdc_c.r_st_bmask = 0; 152 wdc_c.r_st_pmask = 0; 153 wdc_c.r_precomp = WDSF_SET_MODE; 154 wdc_c.r_count = mode; 155 wdc_c.flags = AT_READ | flags; 156 wdc_c.timeout = 1000; /* 1s */ 157 if (wdc_exec_command(drvp, &wdc_c) != WDC_COMPLETE) 158 return CMD_AGAIN; 159 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 160 return CMD_ERR; 161 } 162 return CMD_OK; 163 } 164 165 void 166 ata_dmaerr(drvp) 167 struct ata_drive_datas *drvp; 168 { 169 /* 170 * Downgrade decision: if we get NERRS_MAX in NXFER. 171 * We start with n_dmaerrs set to NERRS_MAX-1 so that the 172 * first error within the first NXFER ops will immediatly trigger 173 * a downgrade. 174 * If we got an error and n_xfers is bigger than NXFER reset counters. 175 */ 176 drvp->n_dmaerrs++; 177 if (drvp->n_dmaerrs >= NERRS_MAX && drvp->n_xfers <= NXFER) { 178 wdc_downgrade_mode(drvp); 179 drvp->n_dmaerrs = NERRS_MAX-1; 180 drvp->n_xfers = 0; 181 return; 182 } 183 if (drvp->n_xfers > NXFER) { 184 drvp->n_dmaerrs = 1; /* just got an error */ 185 drvp->n_xfers = 1; /* restart counting from this error */ 186 } 187 } 188 189 void 190 ata_perror(drvp, errno, buf) 191 struct ata_drive_datas *drvp; 192 int errno; 193 char *buf; 194 { 195 static char *errstr0_3[] = {"address mark not found", 196 "track 0 not found", "aborted command", "media change requested", 197 "id not found", "media changed", "uncorrectable data error", 198 "bad block detected"}; 199 static char *errstr4_5[] = {"", 200 "no media/write protected", "aborted command", 201 "media change requested", "id not found", "media changed", 202 "uncorrectable data error", "interface CRC error"}; 203 char **errstr; 204 int i; 205 char *sep = ""; 206 207 if (drvp->ata_vers >= 4) 208 errstr = errstr4_5; 209 else 210 errstr = errstr0_3; 211 212 if (errno == 0) { 213 sprintf(buf, "error not notified"); 214 } 215 216 for (i = 0; i < 8; i++) { 217 if (errno & (1 << i)) { 218 buf += sprintf(buf, "%s%s", sep, errstr[i]); 219 sep = ", "; 220 } 221 } 222 } 223
Indexes created Wed Sep 24 22:09:59 GMT 2025