Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * File...........: linux/drivers/s390/block/dasd_3990_erp.c |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 3 | * Author(s)......: Horst Hummel <Horst.Hummel@de.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Holger Smolinski <Holger.Smolinski@de.ibm.com> |
| 5 | * Bugreports.to..: <Linux390@de.ibm.com> |
| 6 | * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000, 2001 |
| 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/timer.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <asm/idals.h> |
| 13 | #include <asm/todclk.h> |
| 14 | |
| 15 | #define PRINTK_HEADER "dasd_erp(3990): " |
| 16 | |
| 17 | #include "dasd_int.h" |
| 18 | #include "dasd_eckd.h" |
| 19 | |
| 20 | |
| 21 | struct DCTL_data { |
| 22 | unsigned char subcommand; /* e.g Inhibit Write, Enable Write,... */ |
| 23 | unsigned char modifier; /* Subcommand modifier */ |
| 24 | unsigned short res; /* reserved */ |
| 25 | } __attribute__ ((packed)); |
| 26 | |
| 27 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 28 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | * SECTION ERP HANDLING |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 30 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | */ |
| 32 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 33 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | * 24 and 32 byte sense ERP functions |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 35 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | */ |
| 37 | |
| 38 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 39 | * DASD_3990_ERP_CLEANUP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | * |
| 41 | * DESCRIPTION |
| 42 | * Removes the already build but not necessary ERP request and sets |
| 43 | * the status of the original cqr / erp to the given (final) status |
| 44 | * |
| 45 | * PARAMETER |
| 46 | * erp request to be blocked |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 47 | * final_status either DASD_CQR_DONE or DASD_CQR_FAILED |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | * |
| 49 | * RETURN VALUES |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 50 | * cqr original cqr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | */ |
| 52 | static struct dasd_ccw_req * |
| 53 | dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status) |
| 54 | { |
| 55 | struct dasd_ccw_req *cqr = erp->refers; |
| 56 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 57 | dasd_free_erp_request(erp, erp->memdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | cqr->status = final_status; |
| 59 | return cqr; |
| 60 | |
| 61 | } /* end dasd_3990_erp_cleanup */ |
| 62 | |
| 63 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 64 | * DASD_3990_ERP_BLOCK_QUEUE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | * |
| 66 | * DESCRIPTION |
| 67 | * Block the given device request queue to prevent from further |
| 68 | * processing until the started timer has expired or an related |
| 69 | * interrupt was received. |
| 70 | */ |
| 71 | static void |
| 72 | dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires) |
| 73 | { |
| 74 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 75 | struct dasd_device *device = erp->startdev; |
| 76 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
| 78 | DEV_MESSAGE(KERN_INFO, device, |
| 79 | "blocking request queue for %is", expires/HZ); |
| 80 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 81 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | device->stopped |= DASD_STOPPED_PENDING; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 83 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
| 84 | erp->status = DASD_CQR_FILLED; |
| 85 | dasd_block_set_timer(device->block, expires); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | } |
| 87 | |
| 88 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 89 | * DASD_3990_ERP_INT_REQ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | * |
| 91 | * DESCRIPTION |
| 92 | * Handles 'Intervention Required' error. |
| 93 | * This means either device offline or not installed. |
| 94 | * |
| 95 | * PARAMETER |
| 96 | * erp current erp |
| 97 | * RETURN VALUES |
| 98 | * erp modified erp |
| 99 | */ |
| 100 | static struct dasd_ccw_req * |
| 101 | dasd_3990_erp_int_req(struct dasd_ccw_req * erp) |
| 102 | { |
| 103 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 104 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | |
| 106 | /* first time set initial retry counter and erp_function */ |
| 107 | /* and retry once without blocking queue */ |
| 108 | /* (this enables easier enqueing of the cqr) */ |
| 109 | if (erp->function != dasd_3990_erp_int_req) { |
| 110 | |
| 111 | erp->retries = 256; |
| 112 | erp->function = dasd_3990_erp_int_req; |
| 113 | |
| 114 | } else { |
| 115 | |
| 116 | /* issue a message and wait for 'device ready' interrupt */ |
| 117 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 118 | "is offline or not installed - " |
| 119 | "INTERVENTION REQUIRED!!"); |
| 120 | |
| 121 | dasd_3990_erp_block_queue(erp, 60*HZ); |
| 122 | } |
| 123 | |
| 124 | return erp; |
| 125 | |
| 126 | } /* end dasd_3990_erp_int_req */ |
| 127 | |
| 128 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 129 | * DASD_3990_ERP_ALTERNATE_PATH |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | * |
| 131 | * DESCRIPTION |
| 132 | * Repeat the operation on a different channel path. |
| 133 | * If all alternate paths have been tried, the request is posted with a |
| 134 | * permanent error. |
| 135 | * |
| 136 | * PARAMETER |
| 137 | * erp pointer to the current ERP |
| 138 | * |
| 139 | * RETURN VALUES |
| 140 | * erp modified pointer to the ERP |
| 141 | */ |
| 142 | static void |
| 143 | dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp) |
| 144 | { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 145 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | __u8 opm; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 147 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | |
| 149 | /* try alternate valid path */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 150 | spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | opm = ccw_device_get_path_mask(device->cdev); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 152 | spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | //FIXME: start with get_opm ? |
| 154 | if (erp->lpm == 0) |
| 155 | erp->lpm = LPM_ANYPATH & ~(erp->irb.esw.esw0.sublog.lpum); |
| 156 | else |
| 157 | erp->lpm &= ~(erp->irb.esw.esw0.sublog.lpum); |
| 158 | |
| 159 | if ((erp->lpm & opm) != 0x00) { |
| 160 | |
| 161 | DEV_MESSAGE(KERN_DEBUG, device, |
| 162 | "try alternate lpm=%x (lpum=%x / opm=%x)", |
| 163 | erp->lpm, erp->irb.esw.esw0.sublog.lpum, opm); |
| 164 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 165 | /* reset status to submit the request again... */ |
| 166 | erp->status = DASD_CQR_FILLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | erp->retries = 1; |
| 168 | } else { |
| 169 | DEV_MESSAGE(KERN_ERR, device, |
| 170 | "No alternate channel path left (lpum=%x / " |
| 171 | "opm=%x) -> permanent error", |
| 172 | erp->irb.esw.esw0.sublog.lpum, opm); |
| 173 | |
| 174 | /* post request with permanent error */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 175 | erp->status = DASD_CQR_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | } |
| 177 | } /* end dasd_3990_erp_alternate_path */ |
| 178 | |
| 179 | /* |
| 180 | * DASD_3990_ERP_DCTL |
| 181 | * |
| 182 | * DESCRIPTION |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 183 | * Setup cqr to do the Diagnostic Control (DCTL) command with an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | * Inhibit Write subcommand (0x20) and the given modifier. |
| 185 | * |
| 186 | * PARAMETER |
| 187 | * erp pointer to the current (failed) ERP |
| 188 | * modifier subcommand modifier |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 189 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | * RETURN VALUES |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 191 | * dctl_cqr pointer to NEW dctl_cqr |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | * |
| 193 | */ |
| 194 | static struct dasd_ccw_req * |
| 195 | dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier) |
| 196 | { |
| 197 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 198 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | struct DCTL_data *DCTL_data; |
| 200 | struct ccw1 *ccw; |
| 201 | struct dasd_ccw_req *dctl_cqr; |
| 202 | |
| 203 | dctl_cqr = dasd_alloc_erp_request((char *) &erp->magic, 1, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 204 | sizeof(struct DCTL_data), |
| 205 | device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | if (IS_ERR(dctl_cqr)) { |
| 207 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 208 | "Unable to allocate DCTL-CQR"); |
| 209 | erp->status = DASD_CQR_FAILED; |
| 210 | return erp; |
| 211 | } |
| 212 | |
| 213 | DCTL_data = dctl_cqr->data; |
| 214 | |
| 215 | DCTL_data->subcommand = 0x02; /* Inhibit Write */ |
| 216 | DCTL_data->modifier = modifier; |
| 217 | |
| 218 | ccw = dctl_cqr->cpaddr; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 219 | memset(ccw, 0, sizeof(struct ccw1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | ccw->cmd_code = CCW_CMD_DCTL; |
| 221 | ccw->count = 4; |
| 222 | ccw->cda = (__u32)(addr_t) DCTL_data; |
| 223 | dctl_cqr->function = dasd_3990_erp_DCTL; |
| 224 | dctl_cqr->refers = erp; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 225 | dctl_cqr->startdev = device; |
| 226 | dctl_cqr->memdev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | dctl_cqr->magic = erp->magic; |
| 228 | dctl_cqr->expires = 5 * 60 * HZ; |
| 229 | dctl_cqr->retries = 2; |
| 230 | |
| 231 | dctl_cqr->buildclk = get_clock(); |
| 232 | |
| 233 | dctl_cqr->status = DASD_CQR_FILLED; |
| 234 | |
| 235 | return dctl_cqr; |
| 236 | |
| 237 | } /* end dasd_3990_erp_DCTL */ |
| 238 | |
| 239 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 240 | * DASD_3990_ERP_ACTION_1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | * |
| 242 | * DESCRIPTION |
| 243 | * Setup ERP to do the ERP action 1 (see Reference manual). |
| 244 | * Repeat the operation on a different channel path. |
| 245 | * If all alternate paths have been tried, the request is posted with a |
| 246 | * permanent error. |
| 247 | * Note: duplex handling is not implemented (yet). |
| 248 | * |
| 249 | * PARAMETER |
| 250 | * erp pointer to the current ERP |
| 251 | * |
| 252 | * RETURN VALUES |
| 253 | * erp pointer to the ERP |
| 254 | * |
| 255 | */ |
| 256 | static struct dasd_ccw_req * |
| 257 | dasd_3990_erp_action_1(struct dasd_ccw_req * erp) |
| 258 | { |
| 259 | |
| 260 | erp->function = dasd_3990_erp_action_1; |
| 261 | |
| 262 | dasd_3990_erp_alternate_path(erp); |
| 263 | |
| 264 | return erp; |
| 265 | |
| 266 | } /* end dasd_3990_erp_action_1 */ |
| 267 | |
| 268 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 269 | * DASD_3990_ERP_ACTION_4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | * |
| 271 | * DESCRIPTION |
| 272 | * Setup ERP to do the ERP action 4 (see Reference manual). |
| 273 | * Set the current request to PENDING to block the CQR queue for that device |
| 274 | * until the state change interrupt appears. |
| 275 | * Use a timer (20 seconds) to retry the cqr if the interrupt is still |
| 276 | * missing. |
| 277 | * |
| 278 | * PARAMETER |
| 279 | * sense sense data of the actual error |
| 280 | * erp pointer to the current ERP |
| 281 | * |
| 282 | * RETURN VALUES |
| 283 | * erp pointer to the ERP |
| 284 | * |
| 285 | */ |
| 286 | static struct dasd_ccw_req * |
| 287 | dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense) |
| 288 | { |
| 289 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 290 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | |
| 292 | /* first time set initial retry counter and erp_function */ |
| 293 | /* and retry once without waiting for state change pending */ |
| 294 | /* interrupt (this enables easier enqueing of the cqr) */ |
| 295 | if (erp->function != dasd_3990_erp_action_4) { |
| 296 | |
| 297 | DEV_MESSAGE(KERN_INFO, device, "%s", |
| 298 | "dasd_3990_erp_action_4: first time retry"); |
| 299 | |
| 300 | erp->retries = 256; |
| 301 | erp->function = dasd_3990_erp_action_4; |
| 302 | |
| 303 | } else { |
| 304 | |
| 305 | if (sense[25] == 0x1D) { /* state change pending */ |
| 306 | |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 307 | DEV_MESSAGE(KERN_INFO, device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | "waiting for state change pending " |
| 309 | "interrupt, %d retries left", |
| 310 | erp->retries); |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | dasd_3990_erp_block_queue(erp, 30*HZ); |
| 313 | |
| 314 | } else if (sense[25] == 0x1E) { /* busy */ |
| 315 | DEV_MESSAGE(KERN_INFO, device, |
| 316 | "busy - redriving request later, " |
| 317 | "%d retries left", |
| 318 | erp->retries); |
| 319 | dasd_3990_erp_block_queue(erp, HZ); |
| 320 | } else { |
| 321 | |
| 322 | /* no state change pending - retry */ |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 323 | DEV_MESSAGE (KERN_INFO, device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | "redriving request immediately, " |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 325 | "%d retries left", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | erp->retries); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 327 | erp->status = DASD_CQR_FILLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | } |
| 330 | |
| 331 | return erp; |
| 332 | |
| 333 | } /* end dasd_3990_erp_action_4 */ |
| 334 | |
| 335 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 336 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | * 24 byte sense ERP functions (only) |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 338 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | */ |
| 340 | |
| 341 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 342 | * DASD_3990_ERP_ACTION_5 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | * |
| 344 | * DESCRIPTION |
| 345 | * Setup ERP to do the ERP action 5 (see Reference manual). |
| 346 | * NOTE: Further handling is done in xxx_further_erp after the retries. |
| 347 | * |
| 348 | * PARAMETER |
| 349 | * erp pointer to the current ERP |
| 350 | * |
| 351 | * RETURN VALUES |
| 352 | * erp pointer to the ERP |
| 353 | * |
| 354 | */ |
| 355 | static struct dasd_ccw_req * |
| 356 | dasd_3990_erp_action_5(struct dasd_ccw_req * erp) |
| 357 | { |
| 358 | |
| 359 | /* first of all retry */ |
| 360 | erp->retries = 10; |
| 361 | erp->function = dasd_3990_erp_action_5; |
| 362 | |
| 363 | return erp; |
| 364 | |
| 365 | } /* end dasd_3990_erp_action_5 */ |
| 366 | |
| 367 | /* |
| 368 | * DASD_3990_HANDLE_ENV_DATA |
| 369 | * |
| 370 | * DESCRIPTION |
| 371 | * Handles 24 byte 'Environmental data present'. |
| 372 | * Does a analysis of the sense data (message Format) |
| 373 | * and prints the error messages. |
| 374 | * |
| 375 | * PARAMETER |
| 376 | * sense current sense data |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 377 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | * RETURN VALUES |
| 379 | * void |
| 380 | */ |
| 381 | static void |
| 382 | dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense) |
| 383 | { |
| 384 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 385 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | char msg_format = (sense[7] & 0xF0); |
| 387 | char msg_no = (sense[7] & 0x0F); |
| 388 | |
| 389 | switch (msg_format) { |
| 390 | case 0x00: /* Format 0 - Program or System Checks */ |
| 391 | |
| 392 | if (sense[1] & 0x10) { /* check message to operator bit */ |
| 393 | |
| 394 | switch (msg_no) { |
| 395 | case 0x00: /* No Message */ |
| 396 | break; |
| 397 | case 0x01: |
| 398 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 399 | "FORMAT 0 - Invalid Command"); |
| 400 | break; |
| 401 | case 0x02: |
| 402 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 403 | "FORMAT 0 - Invalid Command " |
| 404 | "Sequence"); |
| 405 | break; |
| 406 | case 0x03: |
| 407 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 408 | "FORMAT 0 - CCW Count less than " |
| 409 | "required"); |
| 410 | break; |
| 411 | case 0x04: |
| 412 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 413 | "FORMAT 0 - Invalid Parameter"); |
| 414 | break; |
| 415 | case 0x05: |
| 416 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 417 | "FORMAT 0 - Diagnostic of Sepecial" |
| 418 | " Command Violates File Mask"); |
| 419 | break; |
| 420 | case 0x07: |
| 421 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 422 | "FORMAT 0 - Channel Returned with " |
| 423 | "Incorrect retry CCW"); |
| 424 | break; |
| 425 | case 0x08: |
| 426 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 427 | "FORMAT 0 - Reset Notification"); |
| 428 | break; |
| 429 | case 0x09: |
| 430 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 431 | "FORMAT 0 - Storage Path Restart"); |
| 432 | break; |
| 433 | case 0x0A: |
| 434 | DEV_MESSAGE(KERN_WARNING, device, |
| 435 | "FORMAT 0 - Channel requested " |
| 436 | "... %02x", sense[8]); |
| 437 | break; |
| 438 | case 0x0B: |
| 439 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 440 | "FORMAT 0 - Invalid Defective/" |
| 441 | "Alternate Track Pointer"); |
| 442 | break; |
| 443 | case 0x0C: |
| 444 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 445 | "FORMAT 0 - DPS Installation " |
| 446 | "Check"); |
| 447 | break; |
| 448 | case 0x0E: |
| 449 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 450 | "FORMAT 0 - Command Invalid on " |
| 451 | "Secondary Address"); |
| 452 | break; |
| 453 | case 0x0F: |
| 454 | DEV_MESSAGE(KERN_WARNING, device, |
| 455 | "FORMAT 0 - Status Not As " |
| 456 | "Required: reason %02x", sense[8]); |
| 457 | break; |
| 458 | default: |
| 459 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 460 | "FORMAT 0 - Reseved"); |
| 461 | } |
| 462 | } else { |
| 463 | switch (msg_no) { |
| 464 | case 0x00: /* No Message */ |
| 465 | break; |
| 466 | case 0x01: |
| 467 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 468 | "FORMAT 0 - Device Error Source"); |
| 469 | break; |
| 470 | case 0x02: |
| 471 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 472 | "FORMAT 0 - Reserved"); |
| 473 | break; |
| 474 | case 0x03: |
| 475 | DEV_MESSAGE(KERN_WARNING, device, |
| 476 | "FORMAT 0 - Device Fenced - " |
| 477 | "device = %02x", sense[4]); |
| 478 | break; |
| 479 | case 0x04: |
| 480 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 481 | "FORMAT 0 - Data Pinned for " |
| 482 | "Device"); |
| 483 | break; |
| 484 | default: |
| 485 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 486 | "FORMAT 0 - Reserved"); |
| 487 | } |
| 488 | } |
| 489 | break; |
| 490 | |
| 491 | case 0x10: /* Format 1 - Device Equipment Checks */ |
| 492 | switch (msg_no) { |
| 493 | case 0x00: /* No Message */ |
| 494 | break; |
| 495 | case 0x01: |
| 496 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 497 | "FORMAT 1 - Device Status 1 not as " |
| 498 | "expected"); |
| 499 | break; |
| 500 | case 0x03: |
| 501 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 502 | "FORMAT 1 - Index missing"); |
| 503 | break; |
| 504 | case 0x04: |
| 505 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 506 | "FORMAT 1 - Interruption cannot be reset"); |
| 507 | break; |
| 508 | case 0x05: |
| 509 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 510 | "FORMAT 1 - Device did not respond to " |
| 511 | "selection"); |
| 512 | break; |
| 513 | case 0x06: |
| 514 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 515 | "FORMAT 1 - Device check-2 error or Set " |
| 516 | "Sector is not complete"); |
| 517 | break; |
| 518 | case 0x07: |
| 519 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 520 | "FORMAT 1 - Head address does not " |
| 521 | "compare"); |
| 522 | break; |
| 523 | case 0x08: |
| 524 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 525 | "FORMAT 1 - Device status 1 not valid"); |
| 526 | break; |
| 527 | case 0x09: |
| 528 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 529 | "FORMAT 1 - Device not ready"); |
| 530 | break; |
| 531 | case 0x0A: |
| 532 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 533 | "FORMAT 1 - Track physical address did " |
| 534 | "not compare"); |
| 535 | break; |
| 536 | case 0x0B: |
| 537 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 538 | "FORMAT 1 - Missing device address bit"); |
| 539 | break; |
| 540 | case 0x0C: |
| 541 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 542 | "FORMAT 1 - Drive motor switch is off"); |
| 543 | break; |
| 544 | case 0x0D: |
| 545 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 546 | "FORMAT 1 - Seek incomplete"); |
| 547 | break; |
| 548 | case 0x0E: |
| 549 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 550 | "FORMAT 1 - Cylinder address did not " |
| 551 | "compare"); |
| 552 | break; |
| 553 | case 0x0F: |
| 554 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 555 | "FORMAT 1 - Offset active cannot be " |
| 556 | "reset"); |
| 557 | break; |
| 558 | default: |
| 559 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 560 | "FORMAT 1 - Reserved"); |
| 561 | } |
| 562 | break; |
| 563 | |
| 564 | case 0x20: /* Format 2 - 3990 Equipment Checks */ |
| 565 | switch (msg_no) { |
| 566 | case 0x08: |
| 567 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 568 | "FORMAT 2 - 3990 check-2 error"); |
| 569 | break; |
| 570 | case 0x0E: |
| 571 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 572 | "FORMAT 2 - Support facility errors"); |
| 573 | break; |
| 574 | case 0x0F: |
| 575 | DEV_MESSAGE(KERN_WARNING, device, |
| 576 | "FORMAT 2 - Microcode detected error %02x", |
| 577 | sense[8]); |
| 578 | break; |
| 579 | default: |
| 580 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 581 | "FORMAT 2 - Reserved"); |
| 582 | } |
| 583 | break; |
| 584 | |
| 585 | case 0x30: /* Format 3 - 3990 Control Checks */ |
| 586 | switch (msg_no) { |
| 587 | case 0x0F: |
| 588 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 589 | "FORMAT 3 - Allegiance terminated"); |
| 590 | break; |
| 591 | default: |
| 592 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 593 | "FORMAT 3 - Reserved"); |
| 594 | } |
| 595 | break; |
| 596 | |
| 597 | case 0x40: /* Format 4 - Data Checks */ |
| 598 | switch (msg_no) { |
| 599 | case 0x00: |
| 600 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 601 | "FORMAT 4 - Home address area error"); |
| 602 | break; |
| 603 | case 0x01: |
| 604 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 605 | "FORMAT 4 - Count area error"); |
| 606 | break; |
| 607 | case 0x02: |
| 608 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 609 | "FORMAT 4 - Key area error"); |
| 610 | break; |
| 611 | case 0x03: |
| 612 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 613 | "FORMAT 4 - Data area error"); |
| 614 | break; |
| 615 | case 0x04: |
| 616 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 617 | "FORMAT 4 - No sync byte in home address " |
| 618 | "area"); |
| 619 | break; |
| 620 | case 0x05: |
| 621 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 622 | "FORMAT 4 - No sync byte in count address " |
| 623 | "area"); |
| 624 | break; |
| 625 | case 0x06: |
| 626 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 627 | "FORMAT 4 - No sync byte in key area"); |
| 628 | break; |
| 629 | case 0x07: |
| 630 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 631 | "FORMAT 4 - No sync byte in data area"); |
| 632 | break; |
| 633 | case 0x08: |
| 634 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 635 | "FORMAT 4 - Home address area error; " |
| 636 | "offset active"); |
| 637 | break; |
| 638 | case 0x09: |
| 639 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 640 | "FORMAT 4 - Count area error; offset " |
| 641 | "active"); |
| 642 | break; |
| 643 | case 0x0A: |
| 644 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 645 | "FORMAT 4 - Key area error; offset " |
| 646 | "active"); |
| 647 | break; |
| 648 | case 0x0B: |
| 649 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 650 | "FORMAT 4 - Data area error; " |
| 651 | "offset active"); |
| 652 | break; |
| 653 | case 0x0C: |
| 654 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 655 | "FORMAT 4 - No sync byte in home " |
| 656 | "address area; offset active"); |
| 657 | break; |
| 658 | case 0x0D: |
| 659 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 660 | "FORMAT 4 - No syn byte in count " |
| 661 | "address area; offset active"); |
| 662 | break; |
| 663 | case 0x0E: |
| 664 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 665 | "FORMAT 4 - No sync byte in key area; " |
| 666 | "offset active"); |
| 667 | break; |
| 668 | case 0x0F: |
| 669 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 670 | "FORMAT 4 - No syn byte in data area; " |
| 671 | "offset active"); |
| 672 | break; |
| 673 | default: |
| 674 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 675 | "FORMAT 4 - Reserved"); |
| 676 | } |
| 677 | break; |
| 678 | |
| 679 | case 0x50: /* Format 5 - Data Check with displacement information */ |
| 680 | switch (msg_no) { |
| 681 | case 0x00: |
| 682 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 683 | "FORMAT 5 - Data Check in the " |
| 684 | "home address area"); |
| 685 | break; |
| 686 | case 0x01: |
| 687 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 688 | "FORMAT 5 - Data Check in the count area"); |
| 689 | break; |
| 690 | case 0x02: |
| 691 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 692 | "FORMAT 5 - Data Check in the key area"); |
| 693 | break; |
| 694 | case 0x03: |
| 695 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 696 | "FORMAT 5 - Data Check in the data area"); |
| 697 | break; |
| 698 | case 0x08: |
| 699 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 700 | "FORMAT 5 - Data Check in the " |
| 701 | "home address area; offset active"); |
| 702 | break; |
| 703 | case 0x09: |
| 704 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 705 | "FORMAT 5 - Data Check in the count area; " |
| 706 | "offset active"); |
| 707 | break; |
| 708 | case 0x0A: |
| 709 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 710 | "FORMAT 5 - Data Check in the key area; " |
| 711 | "offset active"); |
| 712 | break; |
| 713 | case 0x0B: |
| 714 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 715 | "FORMAT 5 - Data Check in the data area; " |
| 716 | "offset active"); |
| 717 | break; |
| 718 | default: |
| 719 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 720 | "FORMAT 5 - Reserved"); |
| 721 | } |
| 722 | break; |
| 723 | |
| 724 | case 0x60: /* Format 6 - Usage Statistics/Overrun Errors */ |
| 725 | switch (msg_no) { |
| 726 | case 0x00: |
| 727 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 728 | "FORMAT 6 - Overrun on channel A"); |
| 729 | break; |
| 730 | case 0x01: |
| 731 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 732 | "FORMAT 6 - Overrun on channel B"); |
| 733 | break; |
| 734 | case 0x02: |
| 735 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 736 | "FORMAT 6 - Overrun on channel C"); |
| 737 | break; |
| 738 | case 0x03: |
| 739 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 740 | "FORMAT 6 - Overrun on channel D"); |
| 741 | break; |
| 742 | case 0x04: |
| 743 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 744 | "FORMAT 6 - Overrun on channel E"); |
| 745 | break; |
| 746 | case 0x05: |
| 747 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 748 | "FORMAT 6 - Overrun on channel F"); |
| 749 | break; |
| 750 | case 0x06: |
| 751 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 752 | "FORMAT 6 - Overrun on channel G"); |
| 753 | break; |
| 754 | case 0x07: |
| 755 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 756 | "FORMAT 6 - Overrun on channel H"); |
| 757 | break; |
| 758 | default: |
| 759 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 760 | "FORMAT 6 - Reserved"); |
| 761 | } |
| 762 | break; |
| 763 | |
| 764 | case 0x70: /* Format 7 - Device Connection Control Checks */ |
| 765 | switch (msg_no) { |
| 766 | case 0x00: |
| 767 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 768 | "FORMAT 7 - RCC initiated by a connection " |
| 769 | "check alert"); |
| 770 | break; |
| 771 | case 0x01: |
| 772 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 773 | "FORMAT 7 - RCC 1 sequence not " |
| 774 | "successful"); |
| 775 | break; |
| 776 | case 0x02: |
| 777 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 778 | "FORMAT 7 - RCC 1 and RCC 2 sequences not " |
| 779 | "successful"); |
| 780 | break; |
| 781 | case 0x03: |
| 782 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 783 | "FORMAT 7 - Invalid tag-in during " |
| 784 | "selection sequence"); |
| 785 | break; |
| 786 | case 0x04: |
| 787 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 788 | "FORMAT 7 - extra RCC required"); |
| 789 | break; |
| 790 | case 0x05: |
| 791 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 792 | "FORMAT 7 - Invalid DCC selection " |
| 793 | "response or timeout"); |
| 794 | break; |
| 795 | case 0x06: |
| 796 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 797 | "FORMAT 7 - Missing end operation; device " |
| 798 | "transfer complete"); |
| 799 | break; |
| 800 | case 0x07: |
| 801 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 802 | "FORMAT 7 - Missing end operation; device " |
| 803 | "transfer incomplete"); |
| 804 | break; |
| 805 | case 0x08: |
| 806 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 807 | "FORMAT 7 - Invalid tag-in for an " |
| 808 | "immediate command sequence"); |
| 809 | break; |
| 810 | case 0x09: |
| 811 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 812 | "FORMAT 7 - Invalid tag-in for an " |
| 813 | "extended command sequence"); |
| 814 | break; |
| 815 | case 0x0A: |
| 816 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 817 | "FORMAT 7 - 3990 microcode time out when " |
| 818 | "stopping selection"); |
| 819 | break; |
| 820 | case 0x0B: |
| 821 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 822 | "FORMAT 7 - No response to selection " |
| 823 | "after a poll interruption"); |
| 824 | break; |
| 825 | case 0x0C: |
| 826 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 827 | "FORMAT 7 - Permanent path error (DASD " |
| 828 | "controller not available)"); |
| 829 | break; |
| 830 | case 0x0D: |
| 831 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 832 | "FORMAT 7 - DASD controller not available" |
| 833 | " on disconnected command chain"); |
| 834 | break; |
| 835 | default: |
| 836 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 837 | "FORMAT 7 - Reserved"); |
| 838 | } |
| 839 | break; |
| 840 | |
| 841 | case 0x80: /* Format 8 - Additional Device Equipment Checks */ |
| 842 | switch (msg_no) { |
| 843 | case 0x00: /* No Message */ |
| 844 | case 0x01: |
| 845 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 846 | "FORMAT 8 - Error correction code " |
| 847 | "hardware fault"); |
| 848 | break; |
| 849 | case 0x03: |
| 850 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 851 | "FORMAT 8 - Unexpected end operation " |
| 852 | "response code"); |
| 853 | break; |
| 854 | case 0x04: |
| 855 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 856 | "FORMAT 8 - End operation with transfer " |
| 857 | "count not zero"); |
| 858 | break; |
| 859 | case 0x05: |
| 860 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 861 | "FORMAT 8 - End operation with transfer " |
| 862 | "count zero"); |
| 863 | break; |
| 864 | case 0x06: |
| 865 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 866 | "FORMAT 8 - DPS checks after a system " |
| 867 | "reset or selective reset"); |
| 868 | break; |
| 869 | case 0x07: |
| 870 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 871 | "FORMAT 8 - DPS cannot be filled"); |
| 872 | break; |
| 873 | case 0x08: |
| 874 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 875 | "FORMAT 8 - Short busy time-out during " |
| 876 | "device selection"); |
| 877 | break; |
| 878 | case 0x09: |
| 879 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 880 | "FORMAT 8 - DASD controller failed to " |
| 881 | "set or reset the long busy latch"); |
| 882 | break; |
| 883 | case 0x0A: |
| 884 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 885 | "FORMAT 8 - No interruption from device " |
| 886 | "during a command chain"); |
| 887 | break; |
| 888 | default: |
| 889 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 890 | "FORMAT 8 - Reserved"); |
| 891 | } |
| 892 | break; |
| 893 | |
| 894 | case 0x90: /* Format 9 - Device Read, Write, and Seek Checks */ |
| 895 | switch (msg_no) { |
| 896 | case 0x00: |
| 897 | break; /* No Message */ |
| 898 | case 0x06: |
| 899 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 900 | "FORMAT 9 - Device check-2 error"); |
| 901 | break; |
| 902 | case 0x07: |
| 903 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 904 | "FORMAT 9 - Head address did not compare"); |
| 905 | break; |
| 906 | case 0x0A: |
| 907 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 908 | "FORMAT 9 - Track physical address did " |
| 909 | "not compare while oriented"); |
| 910 | break; |
| 911 | case 0x0E: |
| 912 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 913 | "FORMAT 9 - Cylinder address did not " |
| 914 | "compare"); |
| 915 | break; |
| 916 | default: |
| 917 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 918 | "FORMAT 9 - Reserved"); |
| 919 | } |
| 920 | break; |
| 921 | |
| 922 | case 0xF0: /* Format F - Cache Storage Checks */ |
| 923 | switch (msg_no) { |
| 924 | case 0x00: |
| 925 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 926 | "FORMAT F - Operation Terminated"); |
| 927 | break; |
| 928 | case 0x01: |
| 929 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 930 | "FORMAT F - Subsystem Processing Error"); |
| 931 | break; |
| 932 | case 0x02: |
| 933 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 934 | "FORMAT F - Cache or nonvolatile storage " |
| 935 | "equipment failure"); |
| 936 | break; |
| 937 | case 0x04: |
| 938 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 939 | "FORMAT F - Caching terminated"); |
| 940 | break; |
| 941 | case 0x06: |
| 942 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 943 | "FORMAT F - Cache fast write access not " |
| 944 | "authorized"); |
| 945 | break; |
| 946 | case 0x07: |
| 947 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 948 | "FORMAT F - Track format incorrect"); |
| 949 | break; |
| 950 | case 0x09: |
| 951 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 952 | "FORMAT F - Caching reinitiated"); |
| 953 | break; |
| 954 | case 0x0A: |
| 955 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 956 | "FORMAT F - Nonvolatile storage " |
| 957 | "terminated"); |
| 958 | break; |
| 959 | case 0x0B: |
| 960 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 961 | "FORMAT F - Volume is suspended duplex"); |
Stefan Weinhuber | 20c6446 | 2006-03-24 03:15:25 -0800 | [diff] [blame] | 962 | /* call extended error reporting (EER) */ |
| 963 | dasd_eer_write(device, erp->refers, |
| 964 | DASD_EER_PPRCSUSPEND); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | break; |
| 966 | case 0x0C: |
| 967 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 968 | "FORMAT F - Subsystem status connot be " |
| 969 | "determined"); |
| 970 | break; |
| 971 | case 0x0D: |
| 972 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 973 | "FORMAT F - Caching status reset to " |
| 974 | "default"); |
| 975 | break; |
| 976 | case 0x0E: |
| 977 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 978 | "FORMAT F - DASD Fast Write inhibited"); |
| 979 | break; |
| 980 | default: |
| 981 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 982 | "FORMAT D - Reserved"); |
| 983 | } |
| 984 | break; |
| 985 | |
| 986 | default: /* unknown message format - should not happen */ |
| 987 | DEV_MESSAGE (KERN_WARNING, device, |
| 988 | "unknown message format %02x", |
| 989 | msg_format); |
| 990 | break; |
| 991 | } /* end switch message format */ |
| 992 | |
| 993 | } /* end dasd_3990_handle_env_data */ |
| 994 | |
| 995 | /* |
| 996 | * DASD_3990_ERP_COM_REJ |
| 997 | * |
| 998 | * DESCRIPTION |
| 999 | * Handles 24 byte 'Command Reject' error. |
| 1000 | * |
| 1001 | * PARAMETER |
| 1002 | * erp current erp_head |
| 1003 | * sense current sense data |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1004 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | * RETURN VALUES |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1006 | * erp 'new' erp_head - pointer to new ERP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1007 | */ |
| 1008 | static struct dasd_ccw_req * |
| 1009 | dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) |
| 1010 | { |
| 1011 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1012 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | |
| 1014 | erp->function = dasd_3990_erp_com_rej; |
| 1015 | |
| 1016 | /* env data present (ACTION 10 - retry should work) */ |
| 1017 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { |
| 1018 | |
| 1019 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1020 | "Command Reject - environmental data present"); |
| 1021 | |
| 1022 | dasd_3990_handle_env_data(erp, sense); |
| 1023 | |
| 1024 | erp->retries = 5; |
| 1025 | |
| 1026 | } else { |
| 1027 | /* fatal error - set status to FAILED */ |
| 1028 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1029 | "Command Reject - Fatal error"); |
| 1030 | |
| 1031 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); |
| 1032 | } |
| 1033 | |
| 1034 | return erp; |
| 1035 | |
| 1036 | } /* end dasd_3990_erp_com_rej */ |
| 1037 | |
| 1038 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1039 | * DASD_3990_ERP_BUS_OUT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | * |
| 1041 | * DESCRIPTION |
| 1042 | * Handles 24 byte 'Bus Out Parity Check' error. |
| 1043 | * |
| 1044 | * PARAMETER |
| 1045 | * erp current erp_head |
| 1046 | * RETURN VALUES |
| 1047 | * erp new erp_head - pointer to new ERP |
| 1048 | */ |
| 1049 | static struct dasd_ccw_req * |
| 1050 | dasd_3990_erp_bus_out(struct dasd_ccw_req * erp) |
| 1051 | { |
| 1052 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1053 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | |
| 1055 | /* first time set initial retry counter and erp_function */ |
| 1056 | /* and retry once without blocking queue */ |
| 1057 | /* (this enables easier enqueing of the cqr) */ |
| 1058 | if (erp->function != dasd_3990_erp_bus_out) { |
| 1059 | erp->retries = 256; |
| 1060 | erp->function = dasd_3990_erp_bus_out; |
| 1061 | |
| 1062 | } else { |
| 1063 | |
| 1064 | /* issue a message and wait for 'device ready' interrupt */ |
| 1065 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1066 | "bus out parity error or BOPC requested by " |
| 1067 | "channel"); |
| 1068 | |
| 1069 | dasd_3990_erp_block_queue(erp, 60*HZ); |
| 1070 | |
| 1071 | } |
| 1072 | |
| 1073 | return erp; |
| 1074 | |
| 1075 | } /* end dasd_3990_erp_bus_out */ |
| 1076 | |
| 1077 | /* |
| 1078 | * DASD_3990_ERP_EQUIP_CHECK |
| 1079 | * |
| 1080 | * DESCRIPTION |
| 1081 | * Handles 24 byte 'Equipment Check' error. |
| 1082 | * |
| 1083 | * PARAMETER |
| 1084 | * erp current erp_head |
| 1085 | * RETURN VALUES |
| 1086 | * erp new erp_head - pointer to new ERP |
| 1087 | */ |
| 1088 | static struct dasd_ccw_req * |
| 1089 | dasd_3990_erp_equip_check(struct dasd_ccw_req * erp, char *sense) |
| 1090 | { |
| 1091 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1092 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | |
| 1094 | erp->function = dasd_3990_erp_equip_check; |
| 1095 | |
| 1096 | if (sense[1] & SNS1_WRITE_INHIBITED) { |
| 1097 | |
| 1098 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1099 | "Write inhibited path encountered"); |
| 1100 | |
| 1101 | /* vary path offline */ |
| 1102 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1103 | "Path should be varied off-line. " |
| 1104 | "This is not implemented yet \n - please report " |
| 1105 | "to linux390@de.ibm.com"); |
| 1106 | |
| 1107 | erp = dasd_3990_erp_action_1(erp); |
| 1108 | |
| 1109 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { |
| 1110 | |
| 1111 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1112 | "Equipment Check - " "environmental data present"); |
| 1113 | |
| 1114 | dasd_3990_handle_env_data(erp, sense); |
| 1115 | |
| 1116 | erp = dasd_3990_erp_action_4(erp, sense); |
| 1117 | |
| 1118 | } else if (sense[1] & SNS1_PERM_ERR) { |
| 1119 | |
| 1120 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1121 | "Equipment Check - retry exhausted or " |
| 1122 | "undesirable"); |
| 1123 | |
| 1124 | erp = dasd_3990_erp_action_1(erp); |
| 1125 | |
| 1126 | } else { |
| 1127 | /* all other equipment checks - Action 5 */ |
| 1128 | /* rest is done when retries == 0 */ |
| 1129 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1130 | "Equipment check or processing error"); |
| 1131 | |
| 1132 | erp = dasd_3990_erp_action_5(erp); |
| 1133 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | return erp; |
| 1135 | |
| 1136 | } /* end dasd_3990_erp_equip_check */ |
| 1137 | |
| 1138 | /* |
| 1139 | * DASD_3990_ERP_DATA_CHECK |
| 1140 | * |
| 1141 | * DESCRIPTION |
| 1142 | * Handles 24 byte 'Data Check' error. |
| 1143 | * |
| 1144 | * PARAMETER |
| 1145 | * erp current erp_head |
| 1146 | * RETURN VALUES |
| 1147 | * erp new erp_head - pointer to new ERP |
| 1148 | */ |
| 1149 | static struct dasd_ccw_req * |
| 1150 | dasd_3990_erp_data_check(struct dasd_ccw_req * erp, char *sense) |
| 1151 | { |
| 1152 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1153 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | |
| 1155 | erp->function = dasd_3990_erp_data_check; |
| 1156 | |
| 1157 | if (sense[2] & SNS2_CORRECTABLE) { /* correctable data check */ |
| 1158 | |
| 1159 | /* issue message that the data has been corrected */ |
| 1160 | DEV_MESSAGE(KERN_EMERG, device, "%s", |
| 1161 | "Data recovered during retry with PCI " |
| 1162 | "fetch mode active"); |
| 1163 | |
| 1164 | /* not possible to handle this situation in Linux */ |
| 1165 | panic("No way to inform application about the possibly " |
| 1166 | "incorrect data"); |
| 1167 | |
| 1168 | } else if (sense[2] & SNS2_ENV_DATA_PRESENT) { |
| 1169 | |
| 1170 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1171 | "Uncorrectable data check recovered secondary " |
| 1172 | "addr of duplex pair"); |
| 1173 | |
| 1174 | erp = dasd_3990_erp_action_4(erp, sense); |
| 1175 | |
| 1176 | } else if (sense[1] & SNS1_PERM_ERR) { |
| 1177 | |
| 1178 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1179 | "Uncorrectable data check with internal " |
| 1180 | "retry exhausted"); |
| 1181 | |
| 1182 | erp = dasd_3990_erp_action_1(erp); |
| 1183 | |
| 1184 | } else { |
| 1185 | /* all other data checks */ |
| 1186 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1187 | "Uncorrectable data check with retry count " |
| 1188 | "exhausted..."); |
| 1189 | |
| 1190 | erp = dasd_3990_erp_action_5(erp); |
| 1191 | } |
| 1192 | |
| 1193 | return erp; |
| 1194 | |
| 1195 | } /* end dasd_3990_erp_data_check */ |
| 1196 | |
| 1197 | /* |
| 1198 | * DASD_3990_ERP_OVERRUN |
| 1199 | * |
| 1200 | * DESCRIPTION |
| 1201 | * Handles 24 byte 'Overrun' error. |
| 1202 | * |
| 1203 | * PARAMETER |
| 1204 | * erp current erp_head |
| 1205 | * RETURN VALUES |
| 1206 | * erp new erp_head - pointer to new ERP |
| 1207 | */ |
| 1208 | static struct dasd_ccw_req * |
| 1209 | dasd_3990_erp_overrun(struct dasd_ccw_req * erp, char *sense) |
| 1210 | { |
| 1211 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1212 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | |
| 1214 | erp->function = dasd_3990_erp_overrun; |
| 1215 | |
| 1216 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1217 | "Overrun - service overrun or overrun" |
| 1218 | " error requested by channel"); |
| 1219 | |
| 1220 | erp = dasd_3990_erp_action_5(erp); |
| 1221 | |
| 1222 | return erp; |
| 1223 | |
| 1224 | } /* end dasd_3990_erp_overrun */ |
| 1225 | |
| 1226 | /* |
| 1227 | * DASD_3990_ERP_INV_FORMAT |
| 1228 | * |
| 1229 | * DESCRIPTION |
| 1230 | * Handles 24 byte 'Invalid Track Format' error. |
| 1231 | * |
| 1232 | * PARAMETER |
| 1233 | * erp current erp_head |
| 1234 | * RETURN VALUES |
| 1235 | * erp new erp_head - pointer to new ERP |
| 1236 | */ |
| 1237 | static struct dasd_ccw_req * |
| 1238 | dasd_3990_erp_inv_format(struct dasd_ccw_req * erp, char *sense) |
| 1239 | { |
| 1240 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1241 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | |
| 1243 | erp->function = dasd_3990_erp_inv_format; |
| 1244 | |
| 1245 | if (sense[2] & SNS2_ENV_DATA_PRESENT) { |
| 1246 | |
| 1247 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1248 | "Track format error when destaging or " |
| 1249 | "staging data"); |
| 1250 | |
| 1251 | dasd_3990_handle_env_data(erp, sense); |
| 1252 | |
| 1253 | erp = dasd_3990_erp_action_4(erp, sense); |
| 1254 | |
| 1255 | } else { |
| 1256 | DEV_MESSAGE(KERN_ERR, device, "%s", |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1257 | "Invalid Track Format - Fatal error"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | |
| 1259 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); |
| 1260 | } |
| 1261 | |
| 1262 | return erp; |
| 1263 | |
| 1264 | } /* end dasd_3990_erp_inv_format */ |
| 1265 | |
| 1266 | /* |
| 1267 | * DASD_3990_ERP_EOC |
| 1268 | * |
| 1269 | * DESCRIPTION |
| 1270 | * Handles 24 byte 'End-of-Cylinder' error. |
| 1271 | * |
| 1272 | * PARAMETER |
| 1273 | * erp already added default erp |
| 1274 | * RETURN VALUES |
| 1275 | * erp pointer to original (failed) cqr. |
| 1276 | */ |
| 1277 | static struct dasd_ccw_req * |
| 1278 | dasd_3990_erp_EOC(struct dasd_ccw_req * default_erp, char *sense) |
| 1279 | { |
| 1280 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1281 | struct dasd_device *device = default_erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | |
| 1283 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1284 | "End-of-Cylinder - must never happen"); |
| 1285 | |
| 1286 | /* implement action 7 - BUG */ |
| 1287 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
| 1288 | |
| 1289 | } /* end dasd_3990_erp_EOC */ |
| 1290 | |
| 1291 | /* |
| 1292 | * DASD_3990_ERP_ENV_DATA |
| 1293 | * |
| 1294 | * DESCRIPTION |
| 1295 | * Handles 24 byte 'Environmental-Data Present' error. |
| 1296 | * |
| 1297 | * PARAMETER |
| 1298 | * erp current erp_head |
| 1299 | * RETURN VALUES |
| 1300 | * erp new erp_head - pointer to new ERP |
| 1301 | */ |
| 1302 | static struct dasd_ccw_req * |
| 1303 | dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense) |
| 1304 | { |
| 1305 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1306 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | |
| 1308 | erp->function = dasd_3990_erp_env_data; |
| 1309 | |
| 1310 | DEV_MESSAGE(KERN_DEBUG, device, "%s", "Environmental data present"); |
| 1311 | |
| 1312 | dasd_3990_handle_env_data(erp, sense); |
| 1313 | |
| 1314 | /* don't retry on disabled interface */ |
| 1315 | if (sense[7] != 0x0F) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | erp = dasd_3990_erp_action_4(erp, sense); |
| 1317 | } else { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1318 | erp->status = DASD_CQR_FILLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1319 | } |
| 1320 | |
| 1321 | return erp; |
| 1322 | |
| 1323 | } /* end dasd_3990_erp_env_data */ |
| 1324 | |
| 1325 | /* |
| 1326 | * DASD_3990_ERP_NO_REC |
| 1327 | * |
| 1328 | * DESCRIPTION |
| 1329 | * Handles 24 byte 'No Record Found' error. |
| 1330 | * |
| 1331 | * PARAMETER |
| 1332 | * erp already added default ERP |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1333 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | * RETURN VALUES |
| 1335 | * erp new erp_head - pointer to new ERP |
| 1336 | */ |
| 1337 | static struct dasd_ccw_req * |
| 1338 | dasd_3990_erp_no_rec(struct dasd_ccw_req * default_erp, char *sense) |
| 1339 | { |
| 1340 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1341 | struct dasd_device *device = default_erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1342 | |
| 1343 | DEV_MESSAGE(KERN_ERR, device, "%s", |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1344 | "No Record Found - Fatal error "); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | |
| 1346 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
| 1347 | |
| 1348 | } /* end dasd_3990_erp_no_rec */ |
| 1349 | |
| 1350 | /* |
| 1351 | * DASD_3990_ERP_FILE_PROT |
| 1352 | * |
| 1353 | * DESCRIPTION |
| 1354 | * Handles 24 byte 'File Protected' error. |
| 1355 | * Note: Seek related recovery is not implemented because |
| 1356 | * wee don't use the seek command yet. |
| 1357 | * |
| 1358 | * PARAMETER |
| 1359 | * erp current erp_head |
| 1360 | * RETURN VALUES |
| 1361 | * erp new erp_head - pointer to new ERP |
| 1362 | */ |
| 1363 | static struct dasd_ccw_req * |
| 1364 | dasd_3990_erp_file_prot(struct dasd_ccw_req * erp) |
| 1365 | { |
| 1366 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1367 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | |
| 1369 | DEV_MESSAGE(KERN_ERR, device, "%s", "File Protected"); |
| 1370 | |
| 1371 | return dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); |
| 1372 | |
| 1373 | } /* end dasd_3990_erp_file_prot */ |
| 1374 | |
| 1375 | /* |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1376 | * DASD_3990_ERP_INSPECT_ALIAS |
| 1377 | * |
| 1378 | * DESCRIPTION |
| 1379 | * Checks if the original request was started on an alias device. |
| 1380 | * If yes, it modifies the original and the erp request so that |
| 1381 | * the erp request can be started on a base device. |
| 1382 | * |
| 1383 | * PARAMETER |
| 1384 | * erp pointer to the currently created default ERP |
| 1385 | * |
| 1386 | * RETURN VALUES |
| 1387 | * erp pointer to the modified ERP, or NULL |
| 1388 | */ |
| 1389 | |
| 1390 | static struct dasd_ccw_req *dasd_3990_erp_inspect_alias( |
| 1391 | struct dasd_ccw_req *erp) |
| 1392 | { |
| 1393 | struct dasd_ccw_req *cqr = erp->refers; |
| 1394 | |
| 1395 | if (cqr->block && |
| 1396 | (cqr->block->base != cqr->startdev)) { |
| 1397 | if (cqr->startdev->features & DASD_FEATURE_ERPLOG) { |
| 1398 | DEV_MESSAGE(KERN_ERR, cqr->startdev, |
| 1399 | "ERP on alias device for request %p," |
| 1400 | " recover on base device %s", cqr, |
| 1401 | cqr->block->base->cdev->dev.bus_id); |
| 1402 | } |
| 1403 | dasd_eckd_reset_ccw_to_base_io(cqr); |
| 1404 | erp->startdev = cqr->block->base; |
| 1405 | erp->function = dasd_3990_erp_inspect_alias; |
| 1406 | return erp; |
| 1407 | } else |
| 1408 | return NULL; |
| 1409 | } |
| 1410 | |
| 1411 | |
| 1412 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1413 | * DASD_3990_ERP_INSPECT_24 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | * |
| 1415 | * DESCRIPTION |
| 1416 | * Does a detailed inspection of the 24 byte sense data |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1417 | * and sets up a related error recovery action. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | * |
| 1419 | * PARAMETER |
| 1420 | * sense sense data of the actual error |
| 1421 | * erp pointer to the currently created default ERP |
| 1422 | * |
| 1423 | * RETURN VALUES |
| 1424 | * erp pointer to the (addtitional) ERP |
| 1425 | */ |
| 1426 | static struct dasd_ccw_req * |
| 1427 | dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense) |
| 1428 | { |
| 1429 | |
| 1430 | struct dasd_ccw_req *erp_filled = NULL; |
| 1431 | |
| 1432 | /* Check sense for .... */ |
| 1433 | /* 'Command Reject' */ |
| 1434 | if ((erp_filled == NULL) && (sense[0] & SNS0_CMD_REJECT)) { |
| 1435 | erp_filled = dasd_3990_erp_com_rej(erp, sense); |
| 1436 | } |
| 1437 | /* 'Intervention Required' */ |
| 1438 | if ((erp_filled == NULL) && (sense[0] & SNS0_INTERVENTION_REQ)) { |
| 1439 | erp_filled = dasd_3990_erp_int_req(erp); |
| 1440 | } |
| 1441 | /* 'Bus Out Parity Check' */ |
| 1442 | if ((erp_filled == NULL) && (sense[0] & SNS0_BUS_OUT_CHECK)) { |
| 1443 | erp_filled = dasd_3990_erp_bus_out(erp); |
| 1444 | } |
| 1445 | /* 'Equipment Check' */ |
| 1446 | if ((erp_filled == NULL) && (sense[0] & SNS0_EQUIPMENT_CHECK)) { |
| 1447 | erp_filled = dasd_3990_erp_equip_check(erp, sense); |
| 1448 | } |
| 1449 | /* 'Data Check' */ |
| 1450 | if ((erp_filled == NULL) && (sense[0] & SNS0_DATA_CHECK)) { |
| 1451 | erp_filled = dasd_3990_erp_data_check(erp, sense); |
| 1452 | } |
| 1453 | /* 'Overrun' */ |
| 1454 | if ((erp_filled == NULL) && (sense[0] & SNS0_OVERRUN)) { |
| 1455 | erp_filled = dasd_3990_erp_overrun(erp, sense); |
| 1456 | } |
| 1457 | /* 'Invalid Track Format' */ |
| 1458 | if ((erp_filled == NULL) && (sense[1] & SNS1_INV_TRACK_FORMAT)) { |
| 1459 | erp_filled = dasd_3990_erp_inv_format(erp, sense); |
| 1460 | } |
| 1461 | /* 'End-of-Cylinder' */ |
| 1462 | if ((erp_filled == NULL) && (sense[1] & SNS1_EOC)) { |
| 1463 | erp_filled = dasd_3990_erp_EOC(erp, sense); |
| 1464 | } |
| 1465 | /* 'Environmental Data' */ |
| 1466 | if ((erp_filled == NULL) && (sense[2] & SNS2_ENV_DATA_PRESENT)) { |
| 1467 | erp_filled = dasd_3990_erp_env_data(erp, sense); |
| 1468 | } |
| 1469 | /* 'No Record Found' */ |
| 1470 | if ((erp_filled == NULL) && (sense[1] & SNS1_NO_REC_FOUND)) { |
| 1471 | erp_filled = dasd_3990_erp_no_rec(erp, sense); |
| 1472 | } |
| 1473 | /* 'File Protected' */ |
| 1474 | if ((erp_filled == NULL) && (sense[1] & SNS1_FILE_PROTECTED)) { |
| 1475 | erp_filled = dasd_3990_erp_file_prot(erp); |
| 1476 | } |
| 1477 | /* other (unknown) error - do default ERP */ |
| 1478 | if (erp_filled == NULL) { |
| 1479 | |
| 1480 | erp_filled = erp; |
| 1481 | } |
| 1482 | |
| 1483 | return erp_filled; |
| 1484 | |
| 1485 | } /* END dasd_3990_erp_inspect_24 */ |
| 1486 | |
| 1487 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1488 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1489 | * 32 byte sense ERP functions (only) |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1490 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | */ |
| 1492 | |
| 1493 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1494 | * DASD_3990_ERPACTION_10_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | * |
| 1496 | * DESCRIPTION |
| 1497 | * Handles 32 byte 'Action 10' of Single Program Action Codes. |
| 1498 | * Just retry and if retry doesn't work, return with error. |
| 1499 | * |
| 1500 | * PARAMETER |
| 1501 | * erp current erp_head |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1502 | * sense current sense data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1503 | * RETURN VALUES |
| 1504 | * erp modified erp_head |
| 1505 | */ |
| 1506 | static struct dasd_ccw_req * |
| 1507 | dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense) |
| 1508 | { |
| 1509 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1510 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | |
| 1512 | erp->retries = 256; |
| 1513 | erp->function = dasd_3990_erp_action_10_32; |
| 1514 | |
| 1515 | DEV_MESSAGE(KERN_DEBUG, device, "%s", "Perform logging requested"); |
| 1516 | |
| 1517 | return erp; |
| 1518 | |
| 1519 | } /* end dasd_3990_erp_action_10_32 */ |
| 1520 | |
| 1521 | /* |
| 1522 | * DASD_3990_ERP_ACTION_1B_32 |
| 1523 | * |
| 1524 | * DESCRIPTION |
| 1525 | * Handles 32 byte 'Action 1B' of Single Program Action Codes. |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1526 | * A write operation could not be finished because of an unexpected |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1527 | * condition. |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1528 | * The already created 'default erp' is used to get the link to |
| 1529 | * the erp chain, but it can not be used for this recovery |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | * action because it contains no DE/LO data space. |
| 1531 | * |
| 1532 | * PARAMETER |
| 1533 | * default_erp already added default erp. |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1534 | * sense current sense data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | * |
| 1536 | * RETURN VALUES |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1537 | * erp new erp or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | * default_erp in case of imprecise ending or error |
| 1539 | */ |
| 1540 | static struct dasd_ccw_req * |
| 1541 | dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense) |
| 1542 | { |
| 1543 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1544 | struct dasd_device *device = default_erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | __u32 cpa = 0; |
| 1546 | struct dasd_ccw_req *cqr; |
| 1547 | struct dasd_ccw_req *erp; |
| 1548 | struct DE_eckd_data *DE_data; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1549 | struct PFX_eckd_data *PFX_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | char *LO_data; /* LO_eckd_data_t */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1551 | struct ccw1 *ccw, *oldccw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | |
| 1553 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1554 | "Write not finished because of unexpected condition"); |
| 1555 | |
| 1556 | default_erp->function = dasd_3990_erp_action_1B_32; |
| 1557 | |
| 1558 | /* determine the original cqr */ |
| 1559 | cqr = default_erp; |
| 1560 | |
| 1561 | while (cqr->refers != NULL) { |
| 1562 | cqr = cqr->refers; |
| 1563 | } |
| 1564 | |
| 1565 | /* for imprecise ending just do default erp */ |
| 1566 | if (sense[1] & 0x01) { |
| 1567 | |
| 1568 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1569 | "Imprecise ending is set - just retry"); |
| 1570 | |
| 1571 | return default_erp; |
| 1572 | } |
| 1573 | |
| 1574 | /* determine the address of the CCW to be restarted */ |
| 1575 | /* Imprecise ending is not set -> addr from IRB-SCSW */ |
| 1576 | cpa = default_erp->refers->irb.scsw.cpa; |
| 1577 | |
| 1578 | if (cpa == 0) { |
| 1579 | |
| 1580 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1581 | "Unable to determine address of the CCW " |
| 1582 | "to be restarted"); |
| 1583 | |
| 1584 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
| 1585 | } |
| 1586 | |
| 1587 | /* Build new ERP request including DE/LO */ |
| 1588 | erp = dasd_alloc_erp_request((char *) &cqr->magic, |
| 1589 | 2 + 1,/* DE/LO + TIC */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1590 | sizeof(struct DE_eckd_data) + |
| 1591 | sizeof(struct LO_eckd_data), device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | |
| 1593 | if (IS_ERR(erp)) { |
| 1594 | DEV_MESSAGE(KERN_ERR, device, "%s", "Unable to allocate ERP"); |
| 1595 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
| 1596 | } |
| 1597 | |
| 1598 | /* use original DE */ |
| 1599 | DE_data = erp->data; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1600 | oldccw = cqr->cpaddr; |
| 1601 | if (oldccw->cmd_code == DASD_ECKD_CCW_PFX) { |
| 1602 | PFX_data = cqr->data; |
| 1603 | memcpy(DE_data, &PFX_data->define_extend, |
| 1604 | sizeof(struct DE_eckd_data)); |
| 1605 | } else |
| 1606 | memcpy(DE_data, cqr->data, sizeof(struct DE_eckd_data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | |
| 1608 | /* create LO */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1609 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1610 | |
| 1611 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { |
| 1612 | |
| 1613 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1614 | "BUG - this should not happen"); |
| 1615 | |
| 1616 | return dasd_3990_erp_cleanup(default_erp, DASD_CQR_FAILED); |
| 1617 | } |
| 1618 | |
| 1619 | if ((sense[7] & 0x3F) == 0x01) { |
| 1620 | /* operation code is WRITE DATA -> data area orientation */ |
| 1621 | LO_data[0] = 0x81; |
| 1622 | |
| 1623 | } else if ((sense[7] & 0x3F) == 0x03) { |
| 1624 | /* operation code is FORMAT WRITE -> index orientation */ |
| 1625 | LO_data[0] = 0xC3; |
| 1626 | |
| 1627 | } else { |
| 1628 | LO_data[0] = sense[7]; /* operation */ |
| 1629 | } |
| 1630 | |
| 1631 | LO_data[1] = sense[8]; /* auxiliary */ |
| 1632 | LO_data[2] = sense[9]; |
| 1633 | LO_data[3] = sense[3]; /* count */ |
| 1634 | LO_data[4] = sense[29]; /* seek_addr.cyl */ |
| 1635 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ |
| 1636 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ |
| 1637 | |
| 1638 | memcpy(&(LO_data[8]), &(sense[11]), 8); |
| 1639 | |
| 1640 | /* create DE ccw */ |
| 1641 | ccw = erp->cpaddr; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1642 | memset(ccw, 0, sizeof(struct ccw1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1643 | ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; |
| 1644 | ccw->flags = CCW_FLAG_CC; |
| 1645 | ccw->count = 16; |
| 1646 | ccw->cda = (__u32)(addr_t) DE_data; |
| 1647 | |
| 1648 | /* create LO ccw */ |
| 1649 | ccw++; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1650 | memset(ccw, 0, sizeof(struct ccw1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD; |
| 1652 | ccw->flags = CCW_FLAG_CC; |
| 1653 | ccw->count = 16; |
| 1654 | ccw->cda = (__u32)(addr_t) LO_data; |
| 1655 | |
| 1656 | /* TIC to the failed ccw */ |
| 1657 | ccw++; |
| 1658 | ccw->cmd_code = CCW_CMD_TIC; |
| 1659 | ccw->cda = cpa; |
| 1660 | |
| 1661 | /* fill erp related fields */ |
| 1662 | erp->function = dasd_3990_erp_action_1B_32; |
| 1663 | erp->refers = default_erp->refers; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1664 | erp->startdev = device; |
| 1665 | erp->memdev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1666 | erp->magic = default_erp->magic; |
| 1667 | erp->expires = 0; |
| 1668 | erp->retries = 256; |
| 1669 | erp->buildclk = get_clock(); |
| 1670 | erp->status = DASD_CQR_FILLED; |
| 1671 | |
| 1672 | /* remove the default erp */ |
| 1673 | dasd_free_erp_request(default_erp, device); |
| 1674 | |
| 1675 | return erp; |
| 1676 | |
| 1677 | } /* end dasd_3990_erp_action_1B_32 */ |
| 1678 | |
| 1679 | /* |
| 1680 | * DASD_3990_UPDATE_1B |
| 1681 | * |
| 1682 | * DESCRIPTION |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1683 | * Handles the update to the 32 byte 'Action 1B' of Single Program |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1684 | * Action Codes in case the first action was not successful. |
| 1685 | * The already created 'previous_erp' is the currently not successful |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1686 | * ERP. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | * |
| 1688 | * PARAMETER |
| 1689 | * previous_erp already created previous erp. |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1690 | * sense current sense data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | * RETURN VALUES |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1692 | * erp modified erp |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | */ |
| 1694 | static struct dasd_ccw_req * |
| 1695 | dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense) |
| 1696 | { |
| 1697 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1698 | struct dasd_device *device = previous_erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1699 | __u32 cpa = 0; |
| 1700 | struct dasd_ccw_req *cqr; |
| 1701 | struct dasd_ccw_req *erp; |
| 1702 | char *LO_data; /* struct LO_eckd_data */ |
| 1703 | struct ccw1 *ccw; |
| 1704 | |
| 1705 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1706 | "Write not finished because of unexpected condition" |
| 1707 | " - follow on"); |
| 1708 | |
| 1709 | /* determine the original cqr */ |
| 1710 | cqr = previous_erp; |
| 1711 | |
| 1712 | while (cqr->refers != NULL) { |
| 1713 | cqr = cqr->refers; |
| 1714 | } |
| 1715 | |
| 1716 | /* for imprecise ending just do default erp */ |
| 1717 | if (sense[1] & 0x01) { |
| 1718 | |
| 1719 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1720 | "Imprecise ending is set - just retry"); |
| 1721 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1722 | previous_erp->status = DASD_CQR_FILLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1723 | |
| 1724 | return previous_erp; |
| 1725 | } |
| 1726 | |
| 1727 | /* determine the address of the CCW to be restarted */ |
| 1728 | /* Imprecise ending is not set -> addr from IRB-SCSW */ |
| 1729 | cpa = previous_erp->irb.scsw.cpa; |
| 1730 | |
| 1731 | if (cpa == 0) { |
| 1732 | |
| 1733 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 1734 | "Unable to determine address of the CCW " |
| 1735 | "to be restarted"); |
| 1736 | |
| 1737 | previous_erp->status = DASD_CQR_FAILED; |
| 1738 | |
| 1739 | return previous_erp; |
| 1740 | } |
| 1741 | |
| 1742 | erp = previous_erp; |
| 1743 | |
| 1744 | /* update the LO with the new returned sense data */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1745 | LO_data = erp->data + sizeof(struct DE_eckd_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | |
| 1747 | if ((sense[3] == 0x01) && (LO_data[1] & 0x01)) { |
| 1748 | |
| 1749 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1750 | "BUG - this should not happen"); |
| 1751 | |
| 1752 | previous_erp->status = DASD_CQR_FAILED; |
| 1753 | |
| 1754 | return previous_erp; |
| 1755 | } |
| 1756 | |
| 1757 | if ((sense[7] & 0x3F) == 0x01) { |
| 1758 | /* operation code is WRITE DATA -> data area orientation */ |
| 1759 | LO_data[0] = 0x81; |
| 1760 | |
| 1761 | } else if ((sense[7] & 0x3F) == 0x03) { |
| 1762 | /* operation code is FORMAT WRITE -> index orientation */ |
| 1763 | LO_data[0] = 0xC3; |
| 1764 | |
| 1765 | } else { |
| 1766 | LO_data[0] = sense[7]; /* operation */ |
| 1767 | } |
| 1768 | |
| 1769 | LO_data[1] = sense[8]; /* auxiliary */ |
| 1770 | LO_data[2] = sense[9]; |
| 1771 | LO_data[3] = sense[3]; /* count */ |
| 1772 | LO_data[4] = sense[29]; /* seek_addr.cyl */ |
| 1773 | LO_data[5] = sense[30]; /* seek_addr.cyl 2nd byte */ |
| 1774 | LO_data[7] = sense[31]; /* seek_addr.head 2nd byte */ |
| 1775 | |
| 1776 | memcpy(&(LO_data[8]), &(sense[11]), 8); |
| 1777 | |
| 1778 | /* TIC to the failed ccw */ |
| 1779 | ccw = erp->cpaddr; /* addr of DE ccw */ |
| 1780 | ccw++; /* addr of LE ccw */ |
| 1781 | ccw++; /* addr of TIC ccw */ |
| 1782 | ccw->cda = cpa; |
| 1783 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1784 | erp->status = DASD_CQR_FILLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | |
| 1786 | return erp; |
| 1787 | |
| 1788 | } /* end dasd_3990_update_1B */ |
| 1789 | |
| 1790 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1791 | * DASD_3990_ERP_COMPOUND_RETRY |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1792 | * |
| 1793 | * DESCRIPTION |
| 1794 | * Handles the compound ERP action retry code. |
| 1795 | * NOTE: At least one retry is done even if zero is specified |
| 1796 | * by the sense data. This makes enqueueing of the request |
| 1797 | * easier. |
| 1798 | * |
| 1799 | * PARAMETER |
| 1800 | * sense sense data of the actual error |
| 1801 | * erp pointer to the currently created ERP |
| 1802 | * |
| 1803 | * RETURN VALUES |
| 1804 | * erp modified ERP pointer |
| 1805 | * |
| 1806 | */ |
| 1807 | static void |
| 1808 | dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense) |
| 1809 | { |
| 1810 | |
| 1811 | switch (sense[25] & 0x03) { |
| 1812 | case 0x00: /* no not retry */ |
| 1813 | erp->retries = 1; |
| 1814 | break; |
| 1815 | |
| 1816 | case 0x01: /* retry 2 times */ |
| 1817 | erp->retries = 2; |
| 1818 | break; |
| 1819 | |
| 1820 | case 0x02: /* retry 10 times */ |
| 1821 | erp->retries = 10; |
| 1822 | break; |
| 1823 | |
| 1824 | case 0x03: /* retry 256 times */ |
| 1825 | erp->retries = 256; |
| 1826 | break; |
| 1827 | |
| 1828 | default: |
| 1829 | BUG(); |
| 1830 | } |
| 1831 | |
| 1832 | erp->function = dasd_3990_erp_compound_retry; |
| 1833 | |
| 1834 | } /* end dasd_3990_erp_compound_retry */ |
| 1835 | |
| 1836 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1837 | * DASD_3990_ERP_COMPOUND_PATH |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1838 | * |
| 1839 | * DESCRIPTION |
| 1840 | * Handles the compound ERP action for retry on alternate |
| 1841 | * channel path. |
| 1842 | * |
| 1843 | * PARAMETER |
| 1844 | * sense sense data of the actual error |
| 1845 | * erp pointer to the currently created ERP |
| 1846 | * |
| 1847 | * RETURN VALUES |
| 1848 | * erp modified ERP pointer |
| 1849 | * |
| 1850 | */ |
| 1851 | static void |
| 1852 | dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense) |
| 1853 | { |
| 1854 | |
| 1855 | if (sense[25] & DASD_SENSE_BIT_3) { |
| 1856 | dasd_3990_erp_alternate_path(erp); |
| 1857 | |
| 1858 | if (erp->status == DASD_CQR_FAILED) { |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1859 | /* reset the lpm and the status to be able to |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | * try further actions. */ |
| 1861 | |
| 1862 | erp->lpm = 0; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1863 | erp->status = DASD_CQR_NEED_ERP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1864 | } |
| 1865 | } |
| 1866 | |
| 1867 | erp->function = dasd_3990_erp_compound_path; |
| 1868 | |
| 1869 | } /* end dasd_3990_erp_compound_path */ |
| 1870 | |
| 1871 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1872 | * DASD_3990_ERP_COMPOUND_CODE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | * |
| 1874 | * DESCRIPTION |
| 1875 | * Handles the compound ERP action for retry code. |
| 1876 | * |
| 1877 | * PARAMETER |
| 1878 | * sense sense data of the actual error |
| 1879 | * erp pointer to the currently created ERP |
| 1880 | * |
| 1881 | * RETURN VALUES |
| 1882 | * erp NEW ERP pointer |
| 1883 | * |
| 1884 | */ |
| 1885 | static struct dasd_ccw_req * |
| 1886 | dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense) |
| 1887 | { |
| 1888 | |
| 1889 | if (sense[25] & DASD_SENSE_BIT_2) { |
| 1890 | |
| 1891 | switch (sense[28]) { |
| 1892 | case 0x17: |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1893 | /* issue a Diagnostic Control command with an |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame] | 1894 | * Inhibit Write subcommand and controller modifier */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | erp = dasd_3990_erp_DCTL(erp, 0x20); |
| 1896 | break; |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1897 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1898 | case 0x25: |
| 1899 | /* wait for 5 seconds and retry again */ |
| 1900 | erp->retries = 1; |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1901 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1902 | dasd_3990_erp_block_queue (erp, 5*HZ); |
| 1903 | break; |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1904 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1905 | default: |
| 1906 | /* should not happen - continue */ |
| 1907 | break; |
| 1908 | } |
| 1909 | } |
| 1910 | |
| 1911 | erp->function = dasd_3990_erp_compound_code; |
| 1912 | |
| 1913 | return erp; |
| 1914 | |
| 1915 | } /* end dasd_3990_erp_compound_code */ |
| 1916 | |
| 1917 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1918 | * DASD_3990_ERP_COMPOUND_CONFIG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | * |
| 1920 | * DESCRIPTION |
| 1921 | * Handles the compound ERP action for configruation |
| 1922 | * dependent error. |
| 1923 | * Note: duplex handling is not implemented (yet). |
| 1924 | * |
| 1925 | * PARAMETER |
| 1926 | * sense sense data of the actual error |
| 1927 | * erp pointer to the currently created ERP |
| 1928 | * |
| 1929 | * RETURN VALUES |
| 1930 | * erp modified ERP pointer |
| 1931 | * |
| 1932 | */ |
| 1933 | static void |
| 1934 | dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense) |
| 1935 | { |
| 1936 | |
| 1937 | if ((sense[25] & DASD_SENSE_BIT_1) && (sense[26] & DASD_SENSE_BIT_2)) { |
| 1938 | |
| 1939 | /* set to suspended duplex state then restart */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1940 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1941 | |
| 1942 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1943 | "Set device to suspended duplex state should be " |
| 1944 | "done!\n" |
| 1945 | "This is not implemented yet (for compound ERP)" |
| 1946 | " - please report to linux390@de.ibm.com"); |
| 1947 | |
| 1948 | } |
| 1949 | |
| 1950 | erp->function = dasd_3990_erp_compound_config; |
| 1951 | |
| 1952 | } /* end dasd_3990_erp_compound_config */ |
| 1953 | |
| 1954 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1955 | * DASD_3990_ERP_COMPOUND |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | * |
| 1957 | * DESCRIPTION |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1958 | * Does the further compound program action if |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | * compound retry was not successful. |
| 1960 | * |
| 1961 | * PARAMETER |
| 1962 | * sense sense data of the actual error |
| 1963 | * erp pointer to the current (failed) ERP |
| 1964 | * |
| 1965 | * RETURN VALUES |
| 1966 | * erp (additional) ERP pointer |
| 1967 | * |
| 1968 | */ |
| 1969 | static struct dasd_ccw_req * |
| 1970 | dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense) |
| 1971 | { |
| 1972 | |
| 1973 | if ((erp->function == dasd_3990_erp_compound_retry) && |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1974 | (erp->status == DASD_CQR_NEED_ERP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | |
| 1976 | dasd_3990_erp_compound_path(erp, sense); |
| 1977 | } |
| 1978 | |
| 1979 | if ((erp->function == dasd_3990_erp_compound_path) && |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1980 | (erp->status == DASD_CQR_NEED_ERP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | |
| 1982 | erp = dasd_3990_erp_compound_code(erp, sense); |
| 1983 | } |
| 1984 | |
| 1985 | if ((erp->function == dasd_3990_erp_compound_code) && |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1986 | (erp->status == DASD_CQR_NEED_ERP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | |
| 1988 | dasd_3990_erp_compound_config(erp, sense); |
| 1989 | } |
| 1990 | |
| 1991 | /* if no compound action ERP specified, the request failed */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 1992 | if (erp->status == DASD_CQR_NEED_ERP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | erp->status = DASD_CQR_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1994 | |
| 1995 | return erp; |
| 1996 | |
| 1997 | } /* end dasd_3990_erp_compound */ |
| 1998 | |
| 1999 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2000 | * DASD_3990_ERP_INSPECT_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | * |
| 2002 | * DESCRIPTION |
| 2003 | * Does a detailed inspection of the 32 byte sense data |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2004 | * and sets up a related error recovery action. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | * |
| 2006 | * PARAMETER |
| 2007 | * sense sense data of the actual error |
| 2008 | * erp pointer to the currently created default ERP |
| 2009 | * |
| 2010 | * RETURN VALUES |
| 2011 | * erp_filled pointer to the ERP |
| 2012 | * |
| 2013 | */ |
| 2014 | static struct dasd_ccw_req * |
| 2015 | dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense) |
| 2016 | { |
| 2017 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2018 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | |
| 2020 | erp->function = dasd_3990_erp_inspect_32; |
| 2021 | |
| 2022 | if (sense[25] & DASD_SENSE_BIT_0) { |
| 2023 | |
| 2024 | /* compound program action codes (byte25 bit 0 == '1') */ |
| 2025 | dasd_3990_erp_compound_retry(erp, sense); |
| 2026 | |
| 2027 | } else { |
| 2028 | |
| 2029 | /* single program action codes (byte25 bit 0 == '0') */ |
| 2030 | switch (sense[25]) { |
| 2031 | |
| 2032 | case 0x00: /* success - use default ERP for retries */ |
| 2033 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 2034 | "ERP called for successful request" |
| 2035 | " - just retry"); |
| 2036 | break; |
| 2037 | |
| 2038 | case 0x01: /* fatal error */ |
| 2039 | DEV_MESSAGE(KERN_ERR, device, "%s", |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2040 | "Retry not recommended - Fatal error"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | |
| 2042 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); |
| 2043 | break; |
| 2044 | |
| 2045 | case 0x02: /* intervention required */ |
| 2046 | case 0x03: /* intervention required during dual copy */ |
| 2047 | erp = dasd_3990_erp_int_req(erp); |
| 2048 | break; |
| 2049 | |
| 2050 | case 0x0F: /* length mismatch during update write command */ |
| 2051 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 2052 | "update write command error - should not " |
| 2053 | "happen;\n" |
| 2054 | "Please send this message together with " |
| 2055 | "the above sense data to linux390@de." |
| 2056 | "ibm.com"); |
| 2057 | |
| 2058 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); |
| 2059 | break; |
| 2060 | |
| 2061 | case 0x10: /* logging required for other channel program */ |
| 2062 | erp = dasd_3990_erp_action_10_32(erp, sense); |
| 2063 | break; |
| 2064 | |
| 2065 | case 0x15: /* next track outside defined extend */ |
| 2066 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 2067 | "next track outside defined extend - " |
| 2068 | "should not happen;\n" |
| 2069 | "Please send this message together with " |
| 2070 | "the above sense data to linux390@de." |
| 2071 | "ibm.com"); |
| 2072 | |
| 2073 | erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED); |
| 2074 | break; |
| 2075 | |
| 2076 | case 0x1B: /* unexpected condition during write */ |
| 2077 | |
| 2078 | erp = dasd_3990_erp_action_1B_32(erp, sense); |
| 2079 | break; |
| 2080 | |
| 2081 | case 0x1C: /* invalid data */ |
| 2082 | DEV_MESSAGE(KERN_EMERG, device, "%s", |
| 2083 | "Data recovered during retry with PCI " |
| 2084 | "fetch mode active"); |
| 2085 | |
| 2086 | /* not possible to handle this situation in Linux */ |
| 2087 | panic |
| 2088 | ("Invalid data - No way to inform application " |
| 2089 | "about the possibly incorrect data"); |
| 2090 | break; |
| 2091 | |
| 2092 | case 0x1D: /* state-change pending */ |
| 2093 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 2094 | "A State change pending condition exists " |
| 2095 | "for the subsystem or device"); |
| 2096 | |
| 2097 | erp = dasd_3990_erp_action_4(erp, sense); |
| 2098 | break; |
| 2099 | |
| 2100 | case 0x1E: /* busy */ |
| 2101 | DEV_MESSAGE(KERN_DEBUG, device, "%s", |
| 2102 | "Busy condition exists " |
| 2103 | "for the subsystem or device"); |
| 2104 | erp = dasd_3990_erp_action_4(erp, sense); |
| 2105 | break; |
| 2106 | |
| 2107 | default: /* all others errors - default erp */ |
| 2108 | break; |
| 2109 | } |
| 2110 | } |
| 2111 | |
| 2112 | return erp; |
| 2113 | |
| 2114 | } /* end dasd_3990_erp_inspect_32 */ |
| 2115 | |
| 2116 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2117 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | * main ERP control fuctions (24 and 32 byte sense) |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2119 | ***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2120 | */ |
| 2121 | |
| 2122 | /* |
| 2123 | * DASD_3990_ERP_INSPECT |
| 2124 | * |
| 2125 | * DESCRIPTION |
| 2126 | * Does a detailed inspection for sense data by calling either |
| 2127 | * the 24-byte or the 32-byte inspection routine. |
| 2128 | * |
| 2129 | * PARAMETER |
| 2130 | * erp pointer to the currently created default ERP |
| 2131 | * RETURN VALUES |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2132 | * erp_new contens was possibly modified |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | */ |
| 2134 | static struct dasd_ccw_req * |
| 2135 | dasd_3990_erp_inspect(struct dasd_ccw_req * erp) |
| 2136 | { |
| 2137 | |
| 2138 | struct dasd_ccw_req *erp_new = NULL; |
| 2139 | /* sense data are located in the refers record of the */ |
| 2140 | /* already set up new ERP ! */ |
| 2141 | char *sense = erp->refers->irb.ecw; |
| 2142 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2143 | /* if this problem occured on an alias retry on base */ |
| 2144 | erp_new = dasd_3990_erp_inspect_alias(erp); |
| 2145 | if (erp_new) |
| 2146 | return erp_new; |
| 2147 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | /* distinguish between 24 and 32 byte sense data */ |
| 2149 | if (sense[27] & DASD_SENSE_BIT_0) { |
| 2150 | |
| 2151 | /* inspect the 24 byte sense data */ |
| 2152 | erp_new = dasd_3990_erp_inspect_24(erp, sense); |
| 2153 | |
| 2154 | } else { |
| 2155 | |
| 2156 | /* inspect the 32 byte sense data */ |
| 2157 | erp_new = dasd_3990_erp_inspect_32(erp, sense); |
| 2158 | |
| 2159 | } /* end distinguish between 24 and 32 byte sense data */ |
| 2160 | |
| 2161 | return erp_new; |
| 2162 | } |
| 2163 | |
| 2164 | /* |
| 2165 | * DASD_3990_ERP_ADD_ERP |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2166 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2167 | * DESCRIPTION |
| 2168 | * This funtion adds an additional request block (ERP) to the head of |
| 2169 | * the given cqr (or erp). |
| 2170 | * This erp is initialized as an default erp (retry TIC) |
| 2171 | * |
| 2172 | * PARAMETER |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2173 | * cqr head of the current ERP-chain (or single cqr if |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | * first error) |
| 2175 | * RETURN VALUES |
| 2176 | * erp pointer to new ERP-chain head |
| 2177 | */ |
| 2178 | static struct dasd_ccw_req * |
| 2179 | dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr) |
| 2180 | { |
| 2181 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2182 | struct dasd_device *device = cqr->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | struct ccw1 *ccw; |
| 2184 | |
| 2185 | /* allocate additional request block */ |
| 2186 | struct dasd_ccw_req *erp; |
| 2187 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2188 | erp = dasd_alloc_erp_request((char *) &cqr->magic, 2, 0, device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | if (IS_ERR(erp)) { |
| 2190 | if (cqr->retries <= 0) { |
| 2191 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 2192 | "Unable to allocate ERP request"); |
| 2193 | cqr->status = DASD_CQR_FAILED; |
| 2194 | cqr->stopclk = get_clock (); |
| 2195 | } else { |
| 2196 | DEV_MESSAGE (KERN_ERR, device, |
| 2197 | "Unable to allocate ERP request " |
| 2198 | "(%i retries left)", |
| 2199 | cqr->retries); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2200 | dasd_block_set_timer(device->block, (HZ << 3)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2201 | } |
| 2202 | return cqr; |
| 2203 | } |
| 2204 | |
| 2205 | /* initialize request with default TIC to current ERP/CQR */ |
| 2206 | ccw = erp->cpaddr; |
| 2207 | ccw->cmd_code = CCW_CMD_NOOP; |
| 2208 | ccw->flags = CCW_FLAG_CC; |
| 2209 | ccw++; |
| 2210 | ccw->cmd_code = CCW_CMD_TIC; |
| 2211 | ccw->cda = (long)(cqr->cpaddr); |
| 2212 | erp->function = dasd_3990_erp_add_erp; |
| 2213 | erp->refers = cqr; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2214 | erp->startdev = device; |
| 2215 | erp->memdev = device; |
| 2216 | erp->block = cqr->block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2217 | erp->magic = cqr->magic; |
| 2218 | erp->expires = 0; |
| 2219 | erp->retries = 256; |
| 2220 | erp->buildclk = get_clock(); |
| 2221 | |
| 2222 | erp->status = DASD_CQR_FILLED; |
| 2223 | |
| 2224 | return erp; |
| 2225 | } |
| 2226 | |
| 2227 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2228 | * DASD_3990_ERP_ADDITIONAL_ERP |
| 2229 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2230 | * DESCRIPTION |
| 2231 | * An additional ERP is needed to handle the current error. |
| 2232 | * Add ERP to the head of the ERP-chain containing the ERP processing |
| 2233 | * determined based on the sense data. |
| 2234 | * |
| 2235 | * PARAMETER |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2236 | * cqr head of the current ERP-chain (or single cqr if |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | * first error) |
| 2238 | * |
| 2239 | * RETURN VALUES |
| 2240 | * erp pointer to new ERP-chain head |
| 2241 | */ |
| 2242 | static struct dasd_ccw_req * |
| 2243 | dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr) |
| 2244 | { |
| 2245 | |
| 2246 | struct dasd_ccw_req *erp = NULL; |
| 2247 | |
| 2248 | /* add erp and initialize with default TIC */ |
| 2249 | erp = dasd_3990_erp_add_erp(cqr); |
| 2250 | |
| 2251 | /* inspect sense, determine specific ERP if possible */ |
| 2252 | if (erp != cqr) { |
| 2253 | |
| 2254 | erp = dasd_3990_erp_inspect(erp); |
| 2255 | } |
| 2256 | |
| 2257 | return erp; |
| 2258 | |
| 2259 | } /* end dasd_3990_erp_additional_erp */ |
| 2260 | |
| 2261 | /* |
| 2262 | * DASD_3990_ERP_ERROR_MATCH |
| 2263 | * |
| 2264 | * DESCRIPTION |
| 2265 | * Check if the device status of the given cqr is the same. |
| 2266 | * This means that the failed CCW and the relevant sense data |
| 2267 | * must match. |
| 2268 | * I don't distinguish between 24 and 32 byte sense because in case of |
| 2269 | * 24 byte sense byte 25 and 27 is set as well. |
| 2270 | * |
| 2271 | * PARAMETER |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2272 | * cqr1 first cqr, which will be compared with the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2273 | * cqr2 second cqr. |
| 2274 | * |
| 2275 | * RETURN VALUES |
| 2276 | * match 'boolean' for match found |
| 2277 | * returns 1 if match found, otherwise 0. |
| 2278 | */ |
| 2279 | static int |
| 2280 | dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, struct dasd_ccw_req *cqr2) |
| 2281 | { |
| 2282 | |
| 2283 | /* check failed CCW */ |
| 2284 | if (cqr1->irb.scsw.cpa != cqr2->irb.scsw.cpa) { |
| 2285 | // return 0; /* CCW doesn't match */ |
| 2286 | } |
| 2287 | |
| 2288 | /* check sense data; byte 0-2,25,27 */ |
| 2289 | if (!((memcmp (cqr1->irb.ecw, cqr2->irb.ecw, 3) == 0) && |
| 2290 | (cqr1->irb.ecw[27] == cqr2->irb.ecw[27]) && |
| 2291 | (cqr1->irb.ecw[25] == cqr2->irb.ecw[25]))) { |
| 2292 | |
| 2293 | return 0; /* sense doesn't match */ |
| 2294 | } |
| 2295 | |
| 2296 | return 1; /* match */ |
| 2297 | |
| 2298 | } /* end dasd_3990_erp_error_match */ |
| 2299 | |
| 2300 | /* |
| 2301 | * DASD_3990_ERP_IN_ERP |
| 2302 | * |
| 2303 | * DESCRIPTION |
| 2304 | * check if the current error already happened before. |
| 2305 | * quick exit if current cqr is not an ERP (cqr->refers=NULL) |
| 2306 | * |
| 2307 | * PARAMETER |
| 2308 | * cqr failed cqr (either original cqr or already an erp) |
| 2309 | * |
| 2310 | * RETURN VALUES |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2311 | * erp erp-pointer to the already defined error |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | * recovery procedure OR |
| 2313 | * NULL if a 'new' error occurred. |
| 2314 | */ |
| 2315 | static struct dasd_ccw_req * |
| 2316 | dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr) |
| 2317 | { |
| 2318 | |
| 2319 | struct dasd_ccw_req *erp_head = cqr, /* save erp chain head */ |
| 2320 | *erp_match = NULL; /* save erp chain head */ |
| 2321 | int match = 0; /* 'boolean' for matching error found */ |
| 2322 | |
| 2323 | if (cqr->refers == NULL) { /* return if not in erp */ |
| 2324 | return NULL; |
| 2325 | } |
| 2326 | |
| 2327 | /* check the erp/cqr chain for current error */ |
| 2328 | do { |
| 2329 | match = dasd_3990_erp_error_match(erp_head, cqr->refers); |
| 2330 | erp_match = cqr; /* save possible matching erp */ |
| 2331 | cqr = cqr->refers; /* check next erp/cqr in queue */ |
| 2332 | |
| 2333 | } while ((cqr->refers != NULL) && (!match)); |
| 2334 | |
| 2335 | if (!match) { |
| 2336 | return NULL; /* no match was found */ |
| 2337 | } |
| 2338 | |
| 2339 | return erp_match; /* return address of matching erp */ |
| 2340 | |
| 2341 | } /* END dasd_3990_erp_in_erp */ |
| 2342 | |
| 2343 | /* |
| 2344 | * DASD_3990_ERP_FURTHER_ERP (24 & 32 byte sense) |
| 2345 | * |
| 2346 | * DESCRIPTION |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2347 | * No retry is left for the current ERP. Check what has to be done |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2348 | * with the ERP. |
| 2349 | * - do further defined ERP action or |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2350 | * - wait for interrupt or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2351 | * - exit with permanent error |
| 2352 | * |
| 2353 | * PARAMETER |
| 2354 | * erp ERP which is in progress with no retry left |
| 2355 | * |
| 2356 | * RETURN VALUES |
| 2357 | * erp modified/additional ERP |
| 2358 | */ |
| 2359 | static struct dasd_ccw_req * |
| 2360 | dasd_3990_erp_further_erp(struct dasd_ccw_req *erp) |
| 2361 | { |
| 2362 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2363 | struct dasd_device *device = erp->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | char *sense = erp->irb.ecw; |
| 2365 | |
| 2366 | /* check for 24 byte sense ERP */ |
| 2367 | if ((erp->function == dasd_3990_erp_bus_out) || |
| 2368 | (erp->function == dasd_3990_erp_action_1) || |
| 2369 | (erp->function == dasd_3990_erp_action_4)) { |
| 2370 | |
| 2371 | erp = dasd_3990_erp_action_1(erp); |
| 2372 | |
| 2373 | } else if (erp->function == dasd_3990_erp_action_5) { |
| 2374 | |
| 2375 | /* retries have not been successful */ |
| 2376 | /* prepare erp for retry on different channel path */ |
| 2377 | erp = dasd_3990_erp_action_1(erp); |
| 2378 | |
| 2379 | if (!(sense[2] & DASD_SENSE_BIT_0)) { |
| 2380 | |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2381 | /* issue a Diagnostic Control command with an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | * Inhibit Write subcommand */ |
| 2383 | |
| 2384 | switch (sense[25]) { |
| 2385 | case 0x17: |
| 2386 | case 0x57:{ /* controller */ |
| 2387 | erp = dasd_3990_erp_DCTL(erp, 0x20); |
| 2388 | break; |
| 2389 | } |
| 2390 | case 0x18: |
| 2391 | case 0x58:{ /* channel path */ |
| 2392 | erp = dasd_3990_erp_DCTL(erp, 0x40); |
| 2393 | break; |
| 2394 | } |
| 2395 | case 0x19: |
| 2396 | case 0x59:{ /* storage director */ |
| 2397 | erp = dasd_3990_erp_DCTL(erp, 0x80); |
| 2398 | break; |
| 2399 | } |
| 2400 | default: |
| 2401 | DEV_MESSAGE(KERN_DEBUG, device, |
| 2402 | "invalid subcommand modifier 0x%x " |
| 2403 | "for Diagnostic Control Command", |
| 2404 | sense[25]); |
| 2405 | } |
| 2406 | } |
| 2407 | |
| 2408 | /* check for 32 byte sense ERP */ |
| 2409 | } else if ((erp->function == dasd_3990_erp_compound_retry) || |
| 2410 | (erp->function == dasd_3990_erp_compound_path) || |
| 2411 | (erp->function == dasd_3990_erp_compound_code) || |
| 2412 | (erp->function == dasd_3990_erp_compound_config)) { |
| 2413 | |
| 2414 | erp = dasd_3990_erp_compound(erp, sense); |
| 2415 | |
| 2416 | } else { |
| 2417 | /* No retry left and no additional special handling */ |
| 2418 | /*necessary */ |
| 2419 | DEV_MESSAGE(KERN_ERR, device, |
| 2420 | "no retries left for erp %p - " |
| 2421 | "set status to FAILED", erp); |
| 2422 | |
| 2423 | erp->status = DASD_CQR_FAILED; |
| 2424 | } |
| 2425 | |
| 2426 | return erp; |
| 2427 | |
| 2428 | } /* end dasd_3990_erp_further_erp */ |
| 2429 | |
| 2430 | /* |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2431 | * DASD_3990_ERP_HANDLE_MATCH_ERP |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2432 | * |
| 2433 | * DESCRIPTION |
| 2434 | * An error occurred again and an ERP has been detected which is already |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2435 | * used to handle this error (e.g. retries). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | * All prior ERP's are asumed to be successful and therefore removed |
| 2437 | * from queue. |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2438 | * If retry counter of matching erp is already 0, it is checked if further |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2439 | * action is needed (besides retry) or if the ERP has failed. |
| 2440 | * |
| 2441 | * PARAMETER |
| 2442 | * erp_head first ERP in ERP-chain |
| 2443 | * erp ERP that handles the actual error. |
| 2444 | * (matching erp) |
| 2445 | * |
| 2446 | * RETURN VALUES |
| 2447 | * erp modified/additional ERP |
| 2448 | */ |
| 2449 | static struct dasd_ccw_req * |
| 2450 | dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head, |
| 2451 | struct dasd_ccw_req *erp) |
| 2452 | { |
| 2453 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2454 | struct dasd_device *device = erp_head->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2455 | struct dasd_ccw_req *erp_done = erp_head; /* finished req */ |
| 2456 | struct dasd_ccw_req *erp_free = NULL; /* req to be freed */ |
| 2457 | |
| 2458 | /* loop over successful ERPs and remove them from chanq */ |
| 2459 | while (erp_done != erp) { |
| 2460 | |
| 2461 | if (erp_done == NULL) /* end of chain reached */ |
| 2462 | panic(PRINTK_HEADER "Programming error in ERP! The " |
| 2463 | "original request was lost\n"); |
| 2464 | |
| 2465 | /* remove the request from the device queue */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2466 | list_del(&erp_done->blocklist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2467 | |
| 2468 | erp_free = erp_done; |
| 2469 | erp_done = erp_done->refers; |
| 2470 | |
| 2471 | /* free the finished erp request */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2472 | dasd_free_erp_request(erp_free, erp_free->memdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2473 | |
| 2474 | } /* end while */ |
| 2475 | |
| 2476 | if (erp->retries > 0) { |
| 2477 | |
| 2478 | char *sense = erp->refers->irb.ecw; |
| 2479 | |
| 2480 | /* check for special retries */ |
| 2481 | if (erp->function == dasd_3990_erp_action_4) { |
| 2482 | |
| 2483 | erp = dasd_3990_erp_action_4(erp, sense); |
| 2484 | |
| 2485 | } else if (erp->function == dasd_3990_erp_action_1B_32) { |
| 2486 | |
| 2487 | erp = dasd_3990_update_1B(erp, sense); |
| 2488 | |
| 2489 | } else if (erp->function == dasd_3990_erp_int_req) { |
| 2490 | |
| 2491 | erp = dasd_3990_erp_int_req(erp); |
| 2492 | |
| 2493 | } else { |
| 2494 | /* simple retry */ |
| 2495 | DEV_MESSAGE(KERN_DEBUG, device, |
| 2496 | "%i retries left for erp %p", |
| 2497 | erp->retries, erp); |
| 2498 | |
| 2499 | /* handle the request again... */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2500 | erp->status = DASD_CQR_FILLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2501 | } |
| 2502 | |
| 2503 | } else { |
| 2504 | /* no retry left - check for further necessary action */ |
| 2505 | /* if no further actions, handle rest as permanent error */ |
| 2506 | erp = dasd_3990_erp_further_erp(erp); |
| 2507 | } |
| 2508 | |
| 2509 | return erp; |
| 2510 | |
| 2511 | } /* end dasd_3990_erp_handle_match_erp */ |
| 2512 | |
| 2513 | /* |
| 2514 | * DASD_3990_ERP_ACTION |
| 2515 | * |
| 2516 | * DESCRIPTION |
Joe Perches | 5d67d16 | 2008-01-26 14:11:20 +0100 | [diff] [blame] | 2517 | * control routine for 3990 erp actions. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2518 | * Has to be called with the queue lock (namely the s390_irq_lock) acquired. |
| 2519 | * |
| 2520 | * PARAMETER |
| 2521 | * cqr failed cqr (either original cqr or already an erp) |
| 2522 | * |
| 2523 | * RETURN VALUES |
| 2524 | * erp erp-pointer to the head of the ERP action chain. |
| 2525 | * This means: |
| 2526 | * - either a ptr to an additional ERP cqr or |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 2527 | * - the original given cqr (which's status might |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2528 | * be modified) |
| 2529 | */ |
| 2530 | struct dasd_ccw_req * |
| 2531 | dasd_3990_erp_action(struct dasd_ccw_req * cqr) |
| 2532 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2533 | struct dasd_ccw_req *erp = NULL; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2534 | struct dasd_device *device = cqr->startdev; |
Horst Hummel | 9575bf2 | 2006-12-08 15:54:15 +0100 | [diff] [blame] | 2535 | struct dasd_ccw_req *temp_erp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2536 | |
Horst Hummel | 9575bf2 | 2006-12-08 15:54:15 +0100 | [diff] [blame] | 2537 | if (device->features & DASD_FEATURE_ERPLOG) { |
| 2538 | /* print current erp_chain */ |
| 2539 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 2540 | "ERP chain at BEGINNING of ERP-ACTION"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2541 | for (temp_erp = cqr; |
| 2542 | temp_erp != NULL; temp_erp = temp_erp->refers) { |
| 2543 | |
| 2544 | DEV_MESSAGE(KERN_ERR, device, |
| 2545 | " erp %p (%02x) refers to %p", |
| 2546 | temp_erp, temp_erp->status, |
| 2547 | temp_erp->refers); |
| 2548 | } |
| 2549 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | |
| 2551 | /* double-check if current erp/cqr was successfull */ |
| 2552 | if ((cqr->irb.scsw.cstat == 0x00) && |
| 2553 | (cqr->irb.scsw.dstat == (DEV_STAT_CHN_END|DEV_STAT_DEV_END))) { |
| 2554 | |
| 2555 | DEV_MESSAGE(KERN_DEBUG, device, |
| 2556 | "ERP called for successful request %p" |
| 2557 | " - NO ERP necessary", cqr); |
| 2558 | |
| 2559 | cqr->status = DASD_CQR_DONE; |
| 2560 | |
| 2561 | return cqr; |
| 2562 | } |
| 2563 | /* check if sense data are available */ |
| 2564 | if (!cqr->irb.ecw) { |
| 2565 | DEV_MESSAGE(KERN_DEBUG, device, |
| 2566 | "ERP called witout sense data avail ..." |
| 2567 | "request %p - NO ERP possible", cqr); |
| 2568 | |
| 2569 | cqr->status = DASD_CQR_FAILED; |
| 2570 | |
| 2571 | return cqr; |
| 2572 | |
| 2573 | } |
| 2574 | |
| 2575 | /* check if error happened before */ |
| 2576 | erp = dasd_3990_erp_in_erp(cqr); |
| 2577 | |
| 2578 | if (erp == NULL) { |
| 2579 | /* no matching erp found - set up erp */ |
| 2580 | erp = dasd_3990_erp_additional_erp(cqr); |
| 2581 | } else { |
| 2582 | /* matching erp found - set all leading erp's to DONE */ |
| 2583 | erp = dasd_3990_erp_handle_match_erp(cqr, erp); |
| 2584 | } |
| 2585 | |
Horst Hummel | 9575bf2 | 2006-12-08 15:54:15 +0100 | [diff] [blame] | 2586 | if (device->features & DASD_FEATURE_ERPLOG) { |
| 2587 | /* print current erp_chain */ |
| 2588 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 2589 | "ERP chain at END of ERP-ACTION"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | for (temp_erp = erp; |
| 2591 | temp_erp != NULL; temp_erp = temp_erp->refers) { |
| 2592 | |
| 2593 | DEV_MESSAGE(KERN_ERR, device, |
| 2594 | " erp %p (%02x) refers to %p", |
| 2595 | temp_erp, temp_erp->status, |
| 2596 | temp_erp->refers); |
| 2597 | } |
| 2598 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2599 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame^] | 2600 | /* enqueue ERP request if it's a new one */ |
| 2601 | if (list_empty(&erp->blocklist)) { |
| 2602 | cqr->status = DASD_CQR_IN_ERP; |
| 2603 | /* add erp request before the cqr */ |
| 2604 | list_add_tail(&erp->blocklist, &cqr->blocklist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2605 | } |
| 2606 | |
| 2607 | return erp; |
| 2608 | |
| 2609 | } /* end dasd_3990_erp_action */ |