Greg Kroah-Hartman | 6f05e69 | 2017-11-14 18:38:03 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 2 | /* |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 3 | * tape device discipline for 3590 tapes. |
| 4 | * |
Frank Munzert | 3ef32e62 | 2009-06-16 10:30:39 +0200 | [diff] [blame] | 5 | * Copyright IBM Corp. 2001, 2009 |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 6 | * Author(s): Stefan Bader <shbader@de.ibm.com> |
| 7 | * Michael Holzheu <holzheu@de.ibm.com> |
| 8 | * Martin Schwidefsky <schwidefsky@de.ibm.com> |
| 9 | */ |
| 10 | |
Michael Holzheu | 59e3692 | 2009-09-11 10:29:07 +0200 | [diff] [blame] | 11 | #define KMSG_COMPONENT "tape_3590" |
Michael Holzheu | bb50991 | 2009-12-18 17:43:21 +0100 | [diff] [blame] | 12 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 13 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 14 | #include <linux/module.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | #include <linux/slab.h> |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 16 | #include <linux/init.h> |
| 17 | #include <linux/bio.h> |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 18 | #include <asm/ebcdic.h> |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 19 | |
| 20 | #define TAPE_DBF_AREA tape_3590_dbf |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 21 | #define BUFSIZE 512 /* size of buffers for dynamic generated messages */ |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 22 | |
| 23 | #include "tape.h" |
| 24 | #include "tape_std.h" |
| 25 | #include "tape_3590.h" |
| 26 | |
Tejun Heo | 6dca467 | 2010-12-24 16:00:18 +0100 | [diff] [blame] | 27 | static struct workqueue_struct *tape_3590_wq; |
| 28 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 29 | /* |
| 30 | * Pointer to debug area. |
| 31 | */ |
| 32 | debug_info_t *TAPE_DBF_AREA = NULL; |
| 33 | EXPORT_SYMBOL(TAPE_DBF_AREA); |
| 34 | |
| 35 | /******************************************************************* |
Stefan Weil | eef35c2 | 2010-08-06 21:11:15 +0200 | [diff] [blame] | 36 | * Error Recovery functions: |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 37 | * - Read Opposite: implemented |
| 38 | * - Read Device (buffered) log: BRA |
| 39 | * - Read Library log: BRA |
| 40 | * - Swap Devices: BRA |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 41 | * - Long Busy: implemented |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 42 | * - Special Intercept: BRA |
| 43 | * - Read Alternate: implemented |
| 44 | *******************************************************************/ |
| 45 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 46 | static const char *tape_3590_msg[TAPE_3590_MAX_MSG] = { |
| 47 | [0x00] = "", |
| 48 | [0x10] = "Lost Sense", |
| 49 | [0x11] = "Assigned Elsewhere", |
| 50 | [0x12] = "Allegiance Reset", |
| 51 | [0x13] = "Shared Access Violation", |
| 52 | [0x20] = "Command Reject", |
| 53 | [0x21] = "Configuration Error", |
| 54 | [0x22] = "Protection Exception", |
| 55 | [0x23] = "Write Protect", |
| 56 | [0x24] = "Write Length", |
| 57 | [0x25] = "Read-Only Format", |
| 58 | [0x31] = "Beginning of Partition", |
| 59 | [0x33] = "End of Partition", |
| 60 | [0x34] = "End of Data", |
| 61 | [0x35] = "Block not found", |
| 62 | [0x40] = "Device Intervention", |
| 63 | [0x41] = "Loader Intervention", |
| 64 | [0x42] = "Library Intervention", |
| 65 | [0x50] = "Write Error", |
| 66 | [0x51] = "Erase Error", |
| 67 | [0x52] = "Formatting Error", |
| 68 | [0x53] = "Read Error", |
| 69 | [0x54] = "Unsupported Format", |
| 70 | [0x55] = "No Formatting", |
| 71 | [0x56] = "Positioning lost", |
| 72 | [0x57] = "Read Length", |
| 73 | [0x60] = "Unsupported Medium", |
| 74 | [0x61] = "Medium Length Error", |
| 75 | [0x62] = "Medium removed", |
| 76 | [0x64] = "Load Check", |
| 77 | [0x65] = "Unload Check", |
| 78 | [0x70] = "Equipment Check", |
| 79 | [0x71] = "Bus out Check", |
| 80 | [0x72] = "Protocol Error", |
| 81 | [0x73] = "Interface Error", |
| 82 | [0x74] = "Overrun", |
| 83 | [0x75] = "Halt Signal", |
| 84 | [0x90] = "Device fenced", |
| 85 | [0x91] = "Device Path fenced", |
| 86 | [0xa0] = "Volume misplaced", |
| 87 | [0xa1] = "Volume inaccessible", |
| 88 | [0xa2] = "Volume in input", |
| 89 | [0xa3] = "Volume ejected", |
| 90 | [0xa4] = "All categories reserved", |
| 91 | [0xa5] = "Duplicate Volume", |
| 92 | [0xa6] = "Library Manager Offline", |
| 93 | [0xa7] = "Library Output Station full", |
| 94 | [0xa8] = "Vision System non-operational", |
| 95 | [0xa9] = "Library Manager Equipment Check", |
| 96 | [0xaa] = "Library Equipment Check", |
| 97 | [0xab] = "All Library Cells full", |
| 98 | [0xac] = "No Cleaner Volumes in Library", |
| 99 | [0xad] = "I/O Station door open", |
| 100 | [0xae] = "Subsystem environmental alert", |
| 101 | }; |
| 102 | |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 103 | static int crypt_supported(struct tape_device *device) |
| 104 | { |
| 105 | return TAPE390_CRYPT_SUPPORTED(TAPE_3590_CRYPT_INFO(device)); |
| 106 | } |
| 107 | |
| 108 | static int crypt_enabled(struct tape_device *device) |
| 109 | { |
| 110 | return TAPE390_CRYPT_ON(TAPE_3590_CRYPT_INFO(device)); |
| 111 | } |
| 112 | |
| 113 | static void ext_to_int_kekl(struct tape390_kekl *in, |
| 114 | struct tape3592_kekl *out) |
| 115 | { |
Vasily Gorbik | 276d605 | 2018-06-28 13:28:37 +0200 | [diff] [blame] | 116 | int len; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 117 | |
| 118 | memset(out, 0, sizeof(*out)); |
| 119 | if (in->type == TAPE390_KEKL_TYPE_HASH) |
| 120 | out->flags |= 0x40; |
| 121 | if (in->type_on_tape == TAPE390_KEKL_TYPE_HASH) |
| 122 | out->flags |= 0x80; |
Vasily Gorbik | 276d605 | 2018-06-28 13:28:37 +0200 | [diff] [blame] | 123 | len = min(sizeof(out->label), strlen(in->label)); |
| 124 | memcpy(out->label, in->label, len); |
| 125 | memset(out->label + len, ' ', sizeof(out->label) - len); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 126 | ASCEBC(out->label, sizeof(out->label)); |
| 127 | } |
| 128 | |
| 129 | static void int_to_ext_kekl(struct tape3592_kekl *in, |
| 130 | struct tape390_kekl *out) |
| 131 | { |
| 132 | memset(out, 0, sizeof(*out)); |
| 133 | if(in->flags & 0x40) |
| 134 | out->type = TAPE390_KEKL_TYPE_HASH; |
| 135 | else |
| 136 | out->type = TAPE390_KEKL_TYPE_LABEL; |
| 137 | if(in->flags & 0x80) |
| 138 | out->type_on_tape = TAPE390_KEKL_TYPE_HASH; |
| 139 | else |
| 140 | out->type_on_tape = TAPE390_KEKL_TYPE_LABEL; |
| 141 | memcpy(out->label, in->label, sizeof(in->label)); |
| 142 | EBCASC(out->label, sizeof(in->label)); |
Heiko Carstens | 1d802e2 | 2009-12-18 17:43:27 +0100 | [diff] [blame] | 143 | strim(out->label); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | static void int_to_ext_kekl_pair(struct tape3592_kekl_pair *in, |
| 147 | struct tape390_kekl_pair *out) |
| 148 | { |
| 149 | if (in->count == 0) { |
| 150 | out->kekl[0].type = TAPE390_KEKL_TYPE_NONE; |
| 151 | out->kekl[0].type_on_tape = TAPE390_KEKL_TYPE_NONE; |
| 152 | out->kekl[1].type = TAPE390_KEKL_TYPE_NONE; |
| 153 | out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE; |
| 154 | } else if (in->count == 1) { |
| 155 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); |
| 156 | out->kekl[1].type = TAPE390_KEKL_TYPE_NONE; |
| 157 | out->kekl[1].type_on_tape = TAPE390_KEKL_TYPE_NONE; |
| 158 | } else if (in->count == 2) { |
| 159 | int_to_ext_kekl(&in->kekl[0], &out->kekl[0]); |
| 160 | int_to_ext_kekl(&in->kekl[1], &out->kekl[1]); |
| 161 | } else { |
| 162 | printk("Invalid KEKL number: %d\n", in->count); |
| 163 | BUG(); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | static int check_ext_kekl(struct tape390_kekl *kekl) |
| 168 | { |
| 169 | if (kekl->type == TAPE390_KEKL_TYPE_NONE) |
| 170 | goto invalid; |
| 171 | if (kekl->type > TAPE390_KEKL_TYPE_HASH) |
| 172 | goto invalid; |
| 173 | if (kekl->type_on_tape == TAPE390_KEKL_TYPE_NONE) |
| 174 | goto invalid; |
| 175 | if (kekl->type_on_tape > TAPE390_KEKL_TYPE_HASH) |
| 176 | goto invalid; |
| 177 | if ((kekl->type == TAPE390_KEKL_TYPE_HASH) && |
| 178 | (kekl->type_on_tape == TAPE390_KEKL_TYPE_LABEL)) |
| 179 | goto invalid; |
| 180 | |
| 181 | return 0; |
| 182 | invalid: |
| 183 | return -EINVAL; |
| 184 | } |
| 185 | |
| 186 | static int check_ext_kekl_pair(struct tape390_kekl_pair *kekls) |
| 187 | { |
| 188 | if (check_ext_kekl(&kekls->kekl[0])) |
| 189 | goto invalid; |
| 190 | if (check_ext_kekl(&kekls->kekl[1])) |
| 191 | goto invalid; |
| 192 | |
| 193 | return 0; |
| 194 | invalid: |
| 195 | return -EINVAL; |
| 196 | } |
| 197 | |
| 198 | /* |
| 199 | * Query KEKLs |
| 200 | */ |
| 201 | static int tape_3592_kekl_query(struct tape_device *device, |
| 202 | struct tape390_kekl_pair *ext_kekls) |
| 203 | { |
| 204 | struct tape_request *request; |
| 205 | struct tape3592_kekl_query_order *order; |
| 206 | struct tape3592_kekl_query_data *int_kekls; |
| 207 | int rc; |
| 208 | |
| 209 | DBF_EVENT(6, "tape3592_kekl_query\n"); |
| 210 | int_kekls = kmalloc(sizeof(*int_kekls), GFP_KERNEL|GFP_DMA); |
| 211 | if (!int_kekls) |
| 212 | return -ENOMEM; |
| 213 | request = tape_alloc_request(2, sizeof(*order)); |
| 214 | if (IS_ERR(request)) { |
| 215 | rc = PTR_ERR(request); |
| 216 | goto fail_malloc; |
| 217 | } |
| 218 | order = request->cpdata; |
| 219 | memset(order,0,sizeof(*order)); |
| 220 | order->code = 0xe2; |
| 221 | order->max_count = 2; |
| 222 | request->op = TO_KEKL_QUERY; |
| 223 | tape_ccw_cc(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); |
| 224 | tape_ccw_end(request->cpaddr + 1, READ_SS_DATA, sizeof(*int_kekls), |
| 225 | int_kekls); |
| 226 | rc = tape_do_io(device, request); |
| 227 | if (rc) |
| 228 | goto fail_request; |
| 229 | int_to_ext_kekl_pair(&int_kekls->kekls, ext_kekls); |
| 230 | |
| 231 | rc = 0; |
| 232 | fail_request: |
| 233 | tape_free_request(request); |
| 234 | fail_malloc: |
| 235 | kfree(int_kekls); |
| 236 | return rc; |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * IOCTL: Query KEKLs |
| 241 | */ |
| 242 | static int tape_3592_ioctl_kekl_query(struct tape_device *device, |
| 243 | unsigned long arg) |
| 244 | { |
| 245 | int rc; |
| 246 | struct tape390_kekl_pair *ext_kekls; |
| 247 | |
| 248 | DBF_EVENT(6, "tape_3592_ioctl_kekl_query\n"); |
| 249 | if (!crypt_supported(device)) |
| 250 | return -ENOSYS; |
| 251 | if (!crypt_enabled(device)) |
| 252 | return -EUNATCH; |
| 253 | ext_kekls = kmalloc(sizeof(*ext_kekls), GFP_KERNEL); |
| 254 | if (!ext_kekls) |
| 255 | return -ENOMEM; |
| 256 | rc = tape_3592_kekl_query(device, ext_kekls); |
| 257 | if (rc != 0) |
| 258 | goto fail; |
| 259 | if (copy_to_user((char __user *) arg, ext_kekls, sizeof(*ext_kekls))) { |
| 260 | rc = -EFAULT; |
| 261 | goto fail; |
| 262 | } |
| 263 | rc = 0; |
| 264 | fail: |
| 265 | kfree(ext_kekls); |
| 266 | return rc; |
| 267 | } |
| 268 | |
| 269 | static int tape_3590_mttell(struct tape_device *device, int mt_count); |
| 270 | |
| 271 | /* |
| 272 | * Set KEKLs |
| 273 | */ |
| 274 | static int tape_3592_kekl_set(struct tape_device *device, |
| 275 | struct tape390_kekl_pair *ext_kekls) |
| 276 | { |
| 277 | struct tape_request *request; |
| 278 | struct tape3592_kekl_set_order *order; |
| 279 | |
| 280 | DBF_EVENT(6, "tape3592_kekl_set\n"); |
| 281 | if (check_ext_kekl_pair(ext_kekls)) { |
| 282 | DBF_EVENT(6, "invalid kekls\n"); |
| 283 | return -EINVAL; |
| 284 | } |
| 285 | if (tape_3590_mttell(device, 0) != 0) |
| 286 | return -EBADSLT; |
| 287 | request = tape_alloc_request(1, sizeof(*order)); |
| 288 | if (IS_ERR(request)) |
| 289 | return PTR_ERR(request); |
| 290 | order = request->cpdata; |
| 291 | memset(order, 0, sizeof(*order)); |
| 292 | order->code = 0xe3; |
| 293 | order->kekls.count = 2; |
| 294 | ext_to_int_kekl(&ext_kekls->kekl[0], &order->kekls.kekl[0]); |
| 295 | ext_to_int_kekl(&ext_kekls->kekl[1], &order->kekls.kekl[1]); |
| 296 | request->op = TO_KEKL_SET; |
| 297 | tape_ccw_end(request->cpaddr, PERF_SUBSYS_FUNC, sizeof(*order), order); |
| 298 | |
| 299 | return tape_do_io_free(device, request); |
| 300 | } |
| 301 | |
| 302 | /* |
| 303 | * IOCTL: Set KEKLs |
| 304 | */ |
| 305 | static int tape_3592_ioctl_kekl_set(struct tape_device *device, |
| 306 | unsigned long arg) |
| 307 | { |
| 308 | int rc; |
| 309 | struct tape390_kekl_pair *ext_kekls; |
| 310 | |
| 311 | DBF_EVENT(6, "tape_3592_ioctl_kekl_set\n"); |
| 312 | if (!crypt_supported(device)) |
| 313 | return -ENOSYS; |
| 314 | if (!crypt_enabled(device)) |
| 315 | return -EUNATCH; |
Markus Elfring | 2ccb5bf | 2016-08-20 19:25:34 +0200 | [diff] [blame] | 316 | ext_kekls = memdup_user((char __user *)arg, sizeof(*ext_kekls)); |
| 317 | if (IS_ERR(ext_kekls)) |
| 318 | return PTR_ERR(ext_kekls); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 319 | rc = tape_3592_kekl_set(device, ext_kekls); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 320 | kfree(ext_kekls); |
| 321 | return rc; |
| 322 | } |
| 323 | |
| 324 | /* |
| 325 | * Enable encryption |
| 326 | */ |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 327 | static struct tape_request *__tape_3592_enable_crypt(struct tape_device *device) |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 328 | { |
| 329 | struct tape_request *request; |
| 330 | char *data; |
| 331 | |
| 332 | DBF_EVENT(6, "tape_3592_enable_crypt\n"); |
| 333 | if (!crypt_supported(device)) |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 334 | return ERR_PTR(-ENOSYS); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 335 | request = tape_alloc_request(2, 72); |
| 336 | if (IS_ERR(request)) |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 337 | return request; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 338 | data = request->cpdata; |
| 339 | memset(data,0,72); |
| 340 | |
| 341 | data[0] = 0x05; |
| 342 | data[36 + 0] = 0x03; |
| 343 | data[36 + 1] = 0x03; |
| 344 | data[36 + 4] = 0x40; |
| 345 | data[36 + 6] = 0x01; |
| 346 | data[36 + 14] = 0x2f; |
| 347 | data[36 + 18] = 0xc3; |
| 348 | data[36 + 35] = 0x72; |
| 349 | request->op = TO_CRYPT_ON; |
| 350 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); |
| 351 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 352 | return request; |
| 353 | } |
| 354 | |
| 355 | static int tape_3592_enable_crypt(struct tape_device *device) |
| 356 | { |
| 357 | struct tape_request *request; |
| 358 | |
| 359 | request = __tape_3592_enable_crypt(device); |
| 360 | if (IS_ERR(request)) |
| 361 | return PTR_ERR(request); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 362 | return tape_do_io_free(device, request); |
| 363 | } |
| 364 | |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 365 | static void tape_3592_enable_crypt_async(struct tape_device *device) |
| 366 | { |
| 367 | struct tape_request *request; |
| 368 | |
| 369 | request = __tape_3592_enable_crypt(device); |
| 370 | if (!IS_ERR(request)) |
| 371 | tape_do_io_async_free(device, request); |
| 372 | } |
| 373 | |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 374 | /* |
| 375 | * Disable encryption |
| 376 | */ |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 377 | static struct tape_request *__tape_3592_disable_crypt(struct tape_device *device) |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 378 | { |
| 379 | struct tape_request *request; |
| 380 | char *data; |
| 381 | |
| 382 | DBF_EVENT(6, "tape_3592_disable_crypt\n"); |
| 383 | if (!crypt_supported(device)) |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 384 | return ERR_PTR(-ENOSYS); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 385 | request = tape_alloc_request(2, 72); |
| 386 | if (IS_ERR(request)) |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 387 | return request; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 388 | data = request->cpdata; |
| 389 | memset(data,0,72); |
| 390 | |
| 391 | data[0] = 0x05; |
| 392 | data[36 + 0] = 0x03; |
| 393 | data[36 + 1] = 0x03; |
| 394 | data[36 + 35] = 0x32; |
| 395 | |
| 396 | request->op = TO_CRYPT_OFF; |
| 397 | tape_ccw_cc(request->cpaddr, MODE_SET_CB, 36, data); |
| 398 | tape_ccw_end(request->cpaddr + 1, MODE_SET_CB, 36, data + 36); |
| 399 | |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 400 | return request; |
| 401 | } |
| 402 | |
| 403 | static int tape_3592_disable_crypt(struct tape_device *device) |
| 404 | { |
| 405 | struct tape_request *request; |
| 406 | |
| 407 | request = __tape_3592_disable_crypt(device); |
| 408 | if (IS_ERR(request)) |
| 409 | return PTR_ERR(request); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 410 | return tape_do_io_free(device, request); |
| 411 | } |
| 412 | |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 413 | static void tape_3592_disable_crypt_async(struct tape_device *device) |
| 414 | { |
| 415 | struct tape_request *request; |
| 416 | |
| 417 | request = __tape_3592_disable_crypt(device); |
| 418 | if (!IS_ERR(request)) |
| 419 | tape_do_io_async_free(device, request); |
| 420 | } |
| 421 | |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 422 | /* |
| 423 | * IOCTL: Set encryption status |
| 424 | */ |
| 425 | static int tape_3592_ioctl_crypt_set(struct tape_device *device, |
| 426 | unsigned long arg) |
| 427 | { |
| 428 | struct tape390_crypt_info info; |
| 429 | |
| 430 | DBF_EVENT(6, "tape_3592_ioctl_crypt_set\n"); |
| 431 | if (!crypt_supported(device)) |
| 432 | return -ENOSYS; |
| 433 | if (copy_from_user(&info, (char __user *)arg, sizeof(info))) |
| 434 | return -EFAULT; |
| 435 | if (info.status & ~TAPE390_CRYPT_ON_MASK) |
| 436 | return -EINVAL; |
| 437 | if (info.status & TAPE390_CRYPT_ON_MASK) |
| 438 | return tape_3592_enable_crypt(device); |
| 439 | else |
| 440 | return tape_3592_disable_crypt(device); |
| 441 | } |
| 442 | |
| 443 | static int tape_3590_sense_medium(struct tape_device *device); |
| 444 | |
| 445 | /* |
| 446 | * IOCTL: Query enryption status |
| 447 | */ |
| 448 | static int tape_3592_ioctl_crypt_query(struct tape_device *device, |
| 449 | unsigned long arg) |
| 450 | { |
| 451 | DBF_EVENT(6, "tape_3592_ioctl_crypt_query\n"); |
| 452 | if (!crypt_supported(device)) |
| 453 | return -ENOSYS; |
| 454 | tape_3590_sense_medium(device); |
| 455 | if (copy_to_user((char __user *) arg, &TAPE_3590_CRYPT_INFO(device), |
| 456 | sizeof(TAPE_3590_CRYPT_INFO(device)))) |
| 457 | return -EFAULT; |
| 458 | else |
| 459 | return 0; |
| 460 | } |
| 461 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 462 | /* |
| 463 | * 3590 IOCTL Overload |
| 464 | */ |
| 465 | static int |
| 466 | tape_3590_ioctl(struct tape_device *device, unsigned int cmd, unsigned long arg) |
| 467 | { |
| 468 | switch (cmd) { |
| 469 | case TAPE390_DISPLAY: { |
| 470 | struct display_struct disp; |
| 471 | |
| 472 | if (copy_from_user(&disp, (char __user *) arg, sizeof(disp))) |
| 473 | return -EFAULT; |
| 474 | |
| 475 | return tape_std_display(device, &disp); |
| 476 | } |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 477 | case TAPE390_KEKL_SET: |
| 478 | return tape_3592_ioctl_kekl_set(device, arg); |
| 479 | case TAPE390_KEKL_QUERY: |
| 480 | return tape_3592_ioctl_kekl_query(device, arg); |
| 481 | case TAPE390_CRYPT_SET: |
| 482 | return tape_3592_ioctl_crypt_set(device, arg); |
| 483 | case TAPE390_CRYPT_QUERY: |
| 484 | return tape_3592_ioctl_crypt_query(device, arg); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 485 | default: |
| 486 | return -EINVAL; /* no additional ioctls */ |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | /* |
| 491 | * SENSE Medium: Get Sense data about medium state |
| 492 | */ |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 493 | static int tape_3590_sense_medium(struct tape_device *device) |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 494 | { |
| 495 | struct tape_request *request; |
| 496 | |
| 497 | request = tape_alloc_request(1, 128); |
| 498 | if (IS_ERR(request)) |
| 499 | return PTR_ERR(request); |
| 500 | request->op = TO_MSEN; |
| 501 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); |
| 502 | return tape_do_io_free(device, request); |
| 503 | } |
| 504 | |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 505 | static void tape_3590_sense_medium_async(struct tape_device *device) |
| 506 | { |
| 507 | struct tape_request *request; |
| 508 | |
| 509 | request = tape_alloc_request(1, 128); |
| 510 | if (IS_ERR(request)) |
| 511 | return; |
| 512 | request->op = TO_MSEN; |
| 513 | tape_ccw_end(request->cpaddr, MEDIUM_SENSE, 128, request->cpdata); |
| 514 | tape_do_io_async_free(device, request); |
| 515 | } |
| 516 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 517 | /* |
| 518 | * MTTELL: Tell block. Return the number of block relative to current file. |
| 519 | */ |
| 520 | static int |
| 521 | tape_3590_mttell(struct tape_device *device, int mt_count) |
| 522 | { |
| 523 | __u64 block_id; |
| 524 | int rc; |
| 525 | |
| 526 | rc = tape_std_read_block_id(device, &block_id); |
| 527 | if (rc) |
| 528 | return rc; |
| 529 | return block_id >> 32; |
| 530 | } |
| 531 | |
| 532 | /* |
| 533 | * MTSEEK: seek to the specified block. |
| 534 | */ |
| 535 | static int |
| 536 | tape_3590_mtseek(struct tape_device *device, int count) |
| 537 | { |
| 538 | struct tape_request *request; |
| 539 | |
| 540 | DBF_EVENT(6, "xsee id: %x\n", count); |
| 541 | request = tape_alloc_request(3, 4); |
| 542 | if (IS_ERR(request)) |
| 543 | return PTR_ERR(request); |
| 544 | request->op = TO_LBL; |
| 545 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); |
| 546 | *(__u32 *) request->cpdata = count; |
| 547 | tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata); |
| 548 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); |
| 549 | return tape_do_io_free(device, request); |
| 550 | } |
| 551 | |
| 552 | /* |
| 553 | * Read Opposite Error Recovery Function: |
| 554 | * Used, when Read Forward does not work |
| 555 | */ |
| 556 | static void |
| 557 | tape_3590_read_opposite(struct tape_device *device, |
| 558 | struct tape_request *request) |
| 559 | { |
| 560 | struct tape_3590_disc_data *data; |
| 561 | |
| 562 | /* |
| 563 | * We have allocated 4 ccws in tape_std_read, so we can now |
| 564 | * transform the request to a read backward, followed by a |
| 565 | * forward space block. |
| 566 | */ |
| 567 | request->op = TO_RBA; |
| 568 | tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte); |
| 569 | data = device->discdata; |
| 570 | tape_ccw_cc_idal(request->cpaddr + 1, data->read_back_op, |
| 571 | device->char_data.idal_buf); |
| 572 | tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL); |
| 573 | tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL); |
| 574 | DBF_EVENT(6, "xrop ccwg\n"); |
| 575 | } |
| 576 | |
| 577 | /* |
| 578 | * Read Attention Msg |
| 579 | * This should be done after an interrupt with attention bit (0x80) |
| 580 | * in device state. |
| 581 | * |
| 582 | * After a "read attention message" request there are two possible |
| 583 | * results: |
| 584 | * |
| 585 | * 1. A unit check is presented, when attention sense is present (e.g. when |
| 586 | * a medium has been unloaded). The attention sense comes then |
| 587 | * together with the unit check. The recovery action is either "retry" |
| 588 | * (in case there is an attention message pending) or "permanent error". |
| 589 | * |
| 590 | * 2. The attention msg is written to the "read subsystem data" buffer. |
| 591 | * In this case we probably should print it to the console. |
| 592 | */ |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 593 | static void tape_3590_read_attmsg_async(struct tape_device *device) |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 594 | { |
| 595 | struct tape_request *request; |
| 596 | char *buf; |
| 597 | |
| 598 | request = tape_alloc_request(3, 4096); |
| 599 | if (IS_ERR(request)) |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 600 | return; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 601 | request->op = TO_READ_ATTMSG; |
| 602 | buf = request->cpdata; |
| 603 | buf[0] = PREP_RD_SS_DATA; |
| 604 | buf[6] = RD_ATTMSG; /* read att msg */ |
| 605 | tape_ccw_cc(request->cpaddr, PERFORM_SS_FUNC, 12, buf); |
| 606 | tape_ccw_cc(request->cpaddr + 1, READ_SS_DATA, 4096 - 12, buf + 12); |
| 607 | tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL); |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 608 | tape_do_io_async_free(device, request); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | /* |
| 612 | * These functions are used to schedule follow-up actions from within an |
| 613 | * interrupt context (like unsolicited interrupts). |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 614 | * Note: the work handler is called by the system work queue. The tape |
| 615 | * commands started by the handler need to be asynchrounous, otherwise |
| 616 | * a deadlock can occur e.g. in case of a deferred cc=1 (see __tape_do_irq). |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 617 | */ |
Stefan Bader | 2cc924b | 2006-04-27 18:40:16 -0700 | [diff] [blame] | 618 | struct work_handler_data { |
| 619 | struct tape_device *device; |
| 620 | enum tape_op op; |
| 621 | struct work_struct work; |
| 622 | }; |
| 623 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 624 | static void |
Martin Schwidefsky | c163753 | 2006-12-08 15:53:57 +0100 | [diff] [blame] | 625 | tape_3590_work_handler(struct work_struct *work) |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 626 | { |
Martin Schwidefsky | c163753 | 2006-12-08 15:53:57 +0100 | [diff] [blame] | 627 | struct work_handler_data *p = |
| 628 | container_of(work, struct work_handler_data, work); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 629 | |
| 630 | switch (p->op) { |
| 631 | case TO_MSEN: |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 632 | tape_3590_sense_medium_async(p->device); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 633 | break; |
| 634 | case TO_READ_ATTMSG: |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 635 | tape_3590_read_attmsg_async(p->device); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 636 | break; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 637 | case TO_CRYPT_ON: |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 638 | tape_3592_enable_crypt_async(p->device); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 639 | break; |
| 640 | case TO_CRYPT_OFF: |
Martin Schwidefsky | 0c2bd9b | 2011-03-03 17:56:07 +0100 | [diff] [blame] | 641 | tape_3592_disable_crypt_async(p->device); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 642 | break; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 643 | default: |
| 644 | DBF_EVENT(3, "T3590: work handler undefined for " |
| 645 | "operation 0x%02x\n", p->op); |
| 646 | } |
| 647 | tape_put_device(p->device); |
| 648 | kfree(p); |
| 649 | } |
| 650 | |
| 651 | static int |
| 652 | tape_3590_schedule_work(struct tape_device *device, enum tape_op op) |
| 653 | { |
Stefan Bader | 2cc924b | 2006-04-27 18:40:16 -0700 | [diff] [blame] | 654 | struct work_handler_data *p; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 655 | |
| 656 | if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL) |
| 657 | return -ENOMEM; |
| 658 | |
Martin Schwidefsky | c163753 | 2006-12-08 15:53:57 +0100 | [diff] [blame] | 659 | INIT_WORK(&p->work, tape_3590_work_handler); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 660 | |
Martin Schwidefsky | 8fd138c | 2009-12-07 12:52:03 +0100 | [diff] [blame] | 661 | p->device = tape_get_device(device); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 662 | p->op = op; |
| 663 | |
Tejun Heo | 6dca467 | 2010-12-24 16:00:18 +0100 | [diff] [blame] | 664 | queue_work(tape_3590_wq, &p->work); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 665 | return 0; |
| 666 | } |
| 667 | |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 668 | static void tape_3590_med_state_set(struct tape_device *device, |
| 669 | struct tape_3590_med_sense *sense) |
| 670 | { |
| 671 | struct tape390_crypt_info *c_info; |
| 672 | |
| 673 | c_info = &TAPE_3590_CRYPT_INFO(device); |
| 674 | |
Michael Holzheu | 1b9fd76 | 2007-10-12 16:11:47 +0200 | [diff] [blame] | 675 | DBF_EVENT(6, "medium state: %x:%x\n", sense->macst, sense->masst); |
| 676 | switch (sense->macst) { |
| 677 | case 0x04: |
| 678 | case 0x05: |
| 679 | case 0x06: |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 680 | tape_med_state_set(device, MS_UNLOADED); |
| 681 | TAPE_3590_CRYPT_INFO(device).medium_status = 0; |
| 682 | return; |
Michael Holzheu | 1b9fd76 | 2007-10-12 16:11:47 +0200 | [diff] [blame] | 683 | case 0x08: |
| 684 | case 0x09: |
| 685 | tape_med_state_set(device, MS_LOADED); |
| 686 | break; |
| 687 | default: |
| 688 | tape_med_state_set(device, MS_UNKNOWN); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 689 | return; |
| 690 | } |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 691 | c_info->medium_status |= TAPE390_MEDIUM_LOADED_MASK; |
| 692 | if (sense->flags & MSENSE_CRYPT_MASK) { |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 693 | DBF_EVENT(6, "Medium is encrypted (%04x)\n", sense->flags); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 694 | c_info->medium_status |= TAPE390_MEDIUM_ENCRYPTED_MASK; |
| 695 | } else { |
| 696 | DBF_EVENT(6, "Medium is not encrypted %04x\n", sense->flags); |
| 697 | c_info->medium_status &= ~TAPE390_MEDIUM_ENCRYPTED_MASK; |
| 698 | } |
| 699 | } |
| 700 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 701 | /* |
| 702 | * The done handler is called at device/channel end and wakes up the sleeping |
| 703 | * process |
| 704 | */ |
| 705 | static int |
| 706 | tape_3590_done(struct tape_device *device, struct tape_request *request) |
| 707 | { |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 708 | |
| 709 | DBF_EVENT(6, "%s done\n", tape_op_verbose[request->op]); |
| 710 | |
| 711 | switch (request->op) { |
| 712 | case TO_BSB: |
| 713 | case TO_BSF: |
| 714 | case TO_DSE: |
| 715 | case TO_FSB: |
| 716 | case TO_FSF: |
| 717 | case TO_LBL: |
| 718 | case TO_RFO: |
| 719 | case TO_RBA: |
| 720 | case TO_REW: |
| 721 | case TO_WRI: |
| 722 | case TO_WTM: |
| 723 | case TO_BLOCK: |
| 724 | case TO_LOAD: |
| 725 | tape_med_state_set(device, MS_LOADED); |
| 726 | break; |
| 727 | case TO_RUN: |
| 728 | tape_med_state_set(device, MS_UNLOADED); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 729 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 730 | break; |
| 731 | case TO_MSEN: |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 732 | tape_3590_med_state_set(device, request->cpdata); |
| 733 | break; |
| 734 | case TO_CRYPT_ON: |
| 735 | TAPE_3590_CRYPT_INFO(device).status |
| 736 | |= TAPE390_CRYPT_ON_MASK; |
| 737 | *(device->modeset_byte) |= 0x03; |
| 738 | break; |
| 739 | case TO_CRYPT_OFF: |
| 740 | TAPE_3590_CRYPT_INFO(device).status |
| 741 | &= ~TAPE390_CRYPT_ON_MASK; |
| 742 | *(device->modeset_byte) &= ~0x03; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 743 | break; |
| 744 | case TO_RBI: /* RBI seems to succeed even without medium loaded. */ |
| 745 | case TO_NOP: /* Same to NOP. */ |
| 746 | case TO_READ_CONFIG: |
| 747 | case TO_READ_ATTMSG: |
| 748 | case TO_DIS: |
| 749 | case TO_ASSIGN: |
| 750 | case TO_UNASSIGN: |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 751 | case TO_SIZE: |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 752 | case TO_KEKL_SET: |
| 753 | case TO_KEKL_QUERY: |
Michael Holzheu | e296306 | 2007-05-04 18:47:53 +0200 | [diff] [blame] | 754 | case TO_RDC: |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 755 | break; |
| 756 | } |
| 757 | return TAPE_IO_SUCCESS; |
| 758 | } |
| 759 | |
| 760 | /* |
Stefan Weil | eef35c2 | 2010-08-06 21:11:15 +0200 | [diff] [blame] | 761 | * This function is called, when error recovery was successful |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 762 | */ |
| 763 | static inline int |
| 764 | tape_3590_erp_succeded(struct tape_device *device, struct tape_request *request) |
| 765 | { |
Coly Li | 73ac36e | 2009-01-07 18:09:16 -0800 | [diff] [blame] | 766 | DBF_EVENT(3, "Error Recovery successful for %s\n", |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 767 | tape_op_verbose[request->op]); |
| 768 | return tape_3590_done(device, request); |
| 769 | } |
| 770 | |
| 771 | /* |
Stefan Weil | eef35c2 | 2010-08-06 21:11:15 +0200 | [diff] [blame] | 772 | * This function is called, when error recovery was not successful |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 773 | */ |
| 774 | static inline int |
| 775 | tape_3590_erp_failed(struct tape_device *device, struct tape_request *request, |
| 776 | struct irb *irb, int rc) |
| 777 | { |
| 778 | DBF_EVENT(3, "Error Recovery failed for %s\n", |
| 779 | tape_op_verbose[request->op]); |
| 780 | tape_dump_sense_dbf(device, request, irb); |
| 781 | return rc; |
| 782 | } |
| 783 | |
| 784 | /* |
| 785 | * Error Recovery do retry |
| 786 | */ |
| 787 | static inline int |
| 788 | tape_3590_erp_retry(struct tape_device *device, struct tape_request *request, |
| 789 | struct irb *irb) |
| 790 | { |
| 791 | DBF_EVENT(2, "Retry: %s\n", tape_op_verbose[request->op]); |
| 792 | tape_dump_sense_dbf(device, request, irb); |
| 793 | return TAPE_IO_RETRY; |
| 794 | } |
| 795 | |
| 796 | /* |
| 797 | * Handle unsolicited interrupts |
| 798 | */ |
| 799 | static int |
| 800 | tape_3590_unsolicited_irq(struct tape_device *device, struct irb *irb) |
| 801 | { |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 802 | if (irb->scsw.cmd.dstat == DEV_STAT_CHN_END) |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 803 | /* Probably result of halt ssch */ |
| 804 | return TAPE_IO_PENDING; |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 805 | else if (irb->scsw.cmd.dstat == 0x85) |
Michael Holzheu | 1b9fd76 | 2007-10-12 16:11:47 +0200 | [diff] [blame] | 806 | /* Device Ready */ |
| 807 | DBF_EVENT(3, "unsol.irq! tape ready: %08x\n", device->cdev_id); |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 808 | else if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 809 | tape_3590_schedule_work(device, TO_READ_ATTMSG); |
Michael Holzheu | 1b9fd76 | 2007-10-12 16:11:47 +0200 | [diff] [blame] | 810 | } else { |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 811 | DBF_EVENT(3, "unsol.irq! dev end: %08x\n", device->cdev_id); |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 812 | tape_dump_sense_dbf(device, NULL, irb); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 813 | } |
Michael Holzheu | 1b9fd76 | 2007-10-12 16:11:47 +0200 | [diff] [blame] | 814 | /* check medium state */ |
| 815 | tape_3590_schedule_work(device, TO_MSEN); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 816 | return TAPE_IO_SUCCESS; |
| 817 | } |
| 818 | |
| 819 | /* |
| 820 | * Basic Recovery routine |
| 821 | */ |
| 822 | static int |
| 823 | tape_3590_erp_basic(struct tape_device *device, struct tape_request *request, |
| 824 | struct irb *irb, int rc) |
| 825 | { |
| 826 | struct tape_3590_sense *sense; |
| 827 | |
| 828 | sense = (struct tape_3590_sense *) irb->ecw; |
| 829 | |
| 830 | switch (sense->bra) { |
| 831 | case SENSE_BRA_PER: |
| 832 | return tape_3590_erp_failed(device, request, irb, rc); |
| 833 | case SENSE_BRA_CONT: |
| 834 | return tape_3590_erp_succeded(device, request); |
| 835 | case SENSE_BRA_RE: |
| 836 | return tape_3590_erp_retry(device, request, irb); |
| 837 | case SENSE_BRA_DRE: |
| 838 | return tape_3590_erp_failed(device, request, irb, rc); |
| 839 | default: |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 840 | BUG(); |
| 841 | return TAPE_IO_STOP; |
| 842 | } |
| 843 | } |
| 844 | |
| 845 | /* |
| 846 | * RDL: Read Device (buffered) log |
| 847 | */ |
| 848 | static int |
| 849 | tape_3590_erp_read_buf_log(struct tape_device *device, |
| 850 | struct tape_request *request, struct irb *irb) |
| 851 | { |
| 852 | /* |
| 853 | * We just do the basic error recovery at the moment (retry). |
| 854 | * Perhaps in the future, we read the log and dump it somewhere... |
| 855 | */ |
| 856 | return tape_3590_erp_basic(device, request, irb, -EIO); |
| 857 | } |
| 858 | |
| 859 | /* |
| 860 | * SWAP: Swap Devices |
| 861 | */ |
| 862 | static int |
| 863 | tape_3590_erp_swap(struct tape_device *device, struct tape_request *request, |
| 864 | struct irb *irb) |
| 865 | { |
| 866 | /* |
| 867 | * This error recovery should swap the tapes |
| 868 | * if the original has a problem. The operation |
| 869 | * should proceed with the new tape... this |
| 870 | * should probably be done in user space! |
| 871 | */ |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 872 | dev_warn (&device->cdev->dev, "The tape medium must be loaded into a " |
| 873 | "different tape unit\n"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 874 | return tape_3590_erp_basic(device, request, irb, -EIO); |
| 875 | } |
| 876 | |
| 877 | /* |
| 878 | * LBY: Long Busy |
| 879 | */ |
| 880 | static int |
| 881 | tape_3590_erp_long_busy(struct tape_device *device, |
| 882 | struct tape_request *request, struct irb *irb) |
| 883 | { |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 884 | DBF_EVENT(6, "Device is busy\n"); |
| 885 | return TAPE_IO_LONG_BUSY; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 886 | } |
| 887 | |
| 888 | /* |
| 889 | * SPI: Special Intercept |
| 890 | */ |
| 891 | static int |
| 892 | tape_3590_erp_special_interrupt(struct tape_device *device, |
| 893 | struct tape_request *request, struct irb *irb) |
| 894 | { |
| 895 | return tape_3590_erp_basic(device, request, irb, -EIO); |
| 896 | } |
| 897 | |
| 898 | /* |
| 899 | * RDA: Read Alternate |
| 900 | */ |
| 901 | static int |
| 902 | tape_3590_erp_read_alternate(struct tape_device *device, |
| 903 | struct tape_request *request, struct irb *irb) |
| 904 | { |
| 905 | struct tape_3590_disc_data *data; |
| 906 | |
| 907 | /* |
| 908 | * The issued Read Backward or Read Previous command is not |
| 909 | * supported by the device |
| 910 | * The recovery action should be to issue another command: |
| 911 | * Read Revious: if Read Backward is not supported |
| 912 | * Read Backward: if Read Previous is not supported |
| 913 | */ |
| 914 | data = device->discdata; |
| 915 | if (data->read_back_op == READ_PREVIOUS) { |
| 916 | DBF_EVENT(2, "(%08x): No support for READ_PREVIOUS command\n", |
| 917 | device->cdev_id); |
| 918 | data->read_back_op = READ_BACKWARD; |
| 919 | } else { |
| 920 | DBF_EVENT(2, "(%08x): No support for READ_BACKWARD command\n", |
| 921 | device->cdev_id); |
| 922 | data->read_back_op = READ_PREVIOUS; |
| 923 | } |
| 924 | tape_3590_read_opposite(device, request); |
| 925 | return tape_3590_erp_retry(device, request, irb); |
| 926 | } |
| 927 | |
| 928 | /* |
| 929 | * Error Recovery read opposite |
| 930 | */ |
| 931 | static int |
| 932 | tape_3590_erp_read_opposite(struct tape_device *device, |
| 933 | struct tape_request *request, struct irb *irb) |
| 934 | { |
| 935 | switch (request->op) { |
| 936 | case TO_RFO: |
| 937 | /* |
| 938 | * We did read forward, but the data could not be read. |
| 939 | * We will read backward and then skip forward again. |
| 940 | */ |
| 941 | tape_3590_read_opposite(device, request); |
| 942 | return tape_3590_erp_retry(device, request, irb); |
| 943 | case TO_RBA: |
| 944 | /* We tried to read forward and backward, but hat no success */ |
| 945 | return tape_3590_erp_failed(device, request, irb, -EIO); |
| 946 | break; |
| 947 | default: |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 948 | return tape_3590_erp_failed(device, request, irb, -EIO); |
| 949 | } |
| 950 | } |
| 951 | |
| 952 | /* |
| 953 | * Print an MIM (Media Information Message) (message code f0) |
| 954 | */ |
| 955 | static void |
| 956 | tape_3590_print_mim_msg_f0(struct tape_device *device, struct irb *irb) |
| 957 | { |
| 958 | struct tape_3590_sense *sense; |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 959 | char *exception, *service; |
| 960 | |
| 961 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); |
| 962 | service = kmalloc(BUFSIZE, GFP_ATOMIC); |
| 963 | |
| 964 | if (!exception || !service) |
| 965 | goto out_nomem; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 966 | |
| 967 | sense = (struct tape_3590_sense *) irb->ecw; |
| 968 | /* Exception Message */ |
| 969 | switch (sense->fmt.f70.emc) { |
| 970 | case 0x02: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 971 | snprintf(exception, BUFSIZE, "Data degraded"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 972 | break; |
| 973 | case 0x03: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 974 | snprintf(exception, BUFSIZE, "Data degraded in partion %i", |
| 975 | sense->fmt.f70.mp); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 976 | break; |
| 977 | case 0x04: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 978 | snprintf(exception, BUFSIZE, "Medium degraded"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 979 | break; |
| 980 | case 0x05: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 981 | snprintf(exception, BUFSIZE, "Medium degraded in partition %i", |
| 982 | sense->fmt.f70.mp); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 983 | break; |
| 984 | case 0x06: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 985 | snprintf(exception, BUFSIZE, "Block 0 Error"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 986 | break; |
| 987 | case 0x07: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 988 | snprintf(exception, BUFSIZE, "Medium Exception 0x%02x", |
| 989 | sense->fmt.f70.md); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 990 | break; |
| 991 | default: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 992 | snprintf(exception, BUFSIZE, "0x%02x", |
| 993 | sense->fmt.f70.emc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 994 | break; |
| 995 | } |
| 996 | /* Service Message */ |
| 997 | switch (sense->fmt.f70.smc) { |
| 998 | case 0x02: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 999 | snprintf(service, BUFSIZE, "Reference Media maintenance " |
| 1000 | "procedure %i", sense->fmt.f70.md); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1001 | break; |
| 1002 | default: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1003 | snprintf(service, BUFSIZE, "0x%02x", |
| 1004 | sense->fmt.f70.smc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1005 | break; |
| 1006 | } |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1007 | |
| 1008 | dev_warn (&device->cdev->dev, "Tape media information: exception %s, " |
| 1009 | "service %s\n", exception, service); |
| 1010 | |
| 1011 | out_nomem: |
| 1012 | kfree(exception); |
| 1013 | kfree(service); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1014 | } |
| 1015 | |
| 1016 | /* |
| 1017 | * Print an I/O Subsystem Service Information Message (message code f1) |
| 1018 | */ |
| 1019 | static void |
| 1020 | tape_3590_print_io_sim_msg_f1(struct tape_device *device, struct irb *irb) |
| 1021 | { |
| 1022 | struct tape_3590_sense *sense; |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1023 | char *exception, *service; |
| 1024 | |
| 1025 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); |
| 1026 | service = kmalloc(BUFSIZE, GFP_ATOMIC); |
| 1027 | |
| 1028 | if (!exception || !service) |
| 1029 | goto out_nomem; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1030 | |
| 1031 | sense = (struct tape_3590_sense *) irb->ecw; |
| 1032 | /* Exception Message */ |
| 1033 | switch (sense->fmt.f71.emc) { |
| 1034 | case 0x01: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1035 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1036 | break; |
| 1037 | case 0x02: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1038 | snprintf(exception, BUFSIZE, "CU Exception - no performance " |
| 1039 | "impact"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1040 | break; |
| 1041 | case 0x03: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1042 | snprintf(exception, BUFSIZE, "CU Exception on channel " |
| 1043 | "interface 0x%02x", sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1044 | break; |
| 1045 | case 0x04: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1046 | snprintf(exception, BUFSIZE, "CU Exception on device path " |
| 1047 | "0x%02x", sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1048 | break; |
| 1049 | case 0x05: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1050 | snprintf(exception, BUFSIZE, "CU Exception on library path " |
| 1051 | "0x%02x", sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1052 | break; |
| 1053 | case 0x06: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1054 | snprintf(exception, BUFSIZE, "CU Exception on node 0x%02x", |
| 1055 | sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1056 | break; |
| 1057 | case 0x07: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1058 | snprintf(exception, BUFSIZE, "CU Exception on partition " |
| 1059 | "0x%02x", sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1060 | break; |
| 1061 | default: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1062 | snprintf(exception, BUFSIZE, "0x%02x", |
| 1063 | sense->fmt.f71.emc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1064 | } |
| 1065 | /* Service Message */ |
| 1066 | switch (sense->fmt.f71.smc) { |
| 1067 | case 0x01: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1068 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1069 | break; |
| 1070 | case 0x02: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1071 | snprintf(service, BUFSIZE, "Repair will not impact cu " |
| 1072 | "performance"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1073 | break; |
| 1074 | case 0x03: |
| 1075 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1076 | snprintf(service, BUFSIZE, "Repair will disable node " |
| 1077 | "0x%x on CU", sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1078 | else |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1079 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1080 | "nodes (0x%x-0x%x) on CU", sense->fmt.f71.md[1], |
| 1081 | sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1082 | break; |
| 1083 | case 0x04: |
| 1084 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1085 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1086 | "channel path 0x%x on CU", |
| 1087 | sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1088 | else |
Masanari Iida | 6774def | 2014-11-05 22:26:48 +0900 | [diff] [blame] | 1089 | snprintf(service, BUFSIZE, "Repair will disable channel" |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1090 | " paths (0x%x-0x%x) on CU", |
| 1091 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1092 | break; |
| 1093 | case 0x05: |
| 1094 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1095 | snprintf(service, BUFSIZE, "Repair will disable device" |
| 1096 | " path 0x%x on CU", sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1097 | else |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1098 | snprintf(service, BUFSIZE, "Repair will disable device" |
| 1099 | " paths (0x%x-0x%x) on CU", |
| 1100 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1101 | break; |
| 1102 | case 0x06: |
| 1103 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1104 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1105 | "library path 0x%x on CU", |
| 1106 | sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1107 | else |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1108 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1109 | "library paths (0x%x-0x%x) on CU", |
| 1110 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1111 | break; |
| 1112 | case 0x07: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1113 | snprintf(service, BUFSIZE, "Repair will disable access to CU"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1114 | break; |
| 1115 | default: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1116 | snprintf(service, BUFSIZE, "0x%02x", |
| 1117 | sense->fmt.f71.smc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1118 | } |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1119 | |
| 1120 | dev_warn (&device->cdev->dev, "I/O subsystem information: exception" |
| 1121 | " %s, service %s\n", exception, service); |
| 1122 | out_nomem: |
| 1123 | kfree(exception); |
| 1124 | kfree(service); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1125 | } |
| 1126 | |
| 1127 | /* |
| 1128 | * Print an Device Subsystem Service Information Message (message code f2) |
| 1129 | */ |
| 1130 | static void |
| 1131 | tape_3590_print_dev_sim_msg_f2(struct tape_device *device, struct irb *irb) |
| 1132 | { |
| 1133 | struct tape_3590_sense *sense; |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1134 | char *exception, *service; |
| 1135 | |
| 1136 | exception = kmalloc(BUFSIZE, GFP_ATOMIC); |
| 1137 | service = kmalloc(BUFSIZE, GFP_ATOMIC); |
| 1138 | |
| 1139 | if (!exception || !service) |
| 1140 | goto out_nomem; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1141 | |
| 1142 | sense = (struct tape_3590_sense *) irb->ecw; |
| 1143 | /* Exception Message */ |
| 1144 | switch (sense->fmt.f71.emc) { |
| 1145 | case 0x01: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1146 | snprintf(exception, BUFSIZE, "Effect of failure is unknown"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1147 | break; |
| 1148 | case 0x02: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1149 | snprintf(exception, BUFSIZE, "DV Exception - no performance" |
| 1150 | " impact"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1151 | break; |
| 1152 | case 0x03: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1153 | snprintf(exception, BUFSIZE, "DV Exception on channel " |
| 1154 | "interface 0x%02x", sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1155 | break; |
| 1156 | case 0x04: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1157 | snprintf(exception, BUFSIZE, "DV Exception on loader 0x%02x", |
| 1158 | sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1159 | break; |
| 1160 | case 0x05: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1161 | snprintf(exception, BUFSIZE, "DV Exception on message display" |
| 1162 | " 0x%02x", sense->fmt.f71.md[0]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1163 | break; |
| 1164 | case 0x06: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1165 | snprintf(exception, BUFSIZE, "DV Exception in tape path"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1166 | break; |
| 1167 | case 0x07: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1168 | snprintf(exception, BUFSIZE, "DV Exception in drive"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1169 | break; |
| 1170 | default: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1171 | snprintf(exception, BUFSIZE, "0x%02x", |
| 1172 | sense->fmt.f71.emc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1173 | } |
| 1174 | /* Service Message */ |
| 1175 | switch (sense->fmt.f71.smc) { |
| 1176 | case 0x01: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1177 | snprintf(service, BUFSIZE, "Repair impact is unknown"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1178 | break; |
| 1179 | case 0x02: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1180 | snprintf(service, BUFSIZE, "Repair will not impact device " |
| 1181 | "performance"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1182 | break; |
| 1183 | case 0x03: |
| 1184 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1185 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1186 | "channel path 0x%x on DV", |
| 1187 | sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1188 | else |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1189 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1190 | "channel path (0x%x-0x%x) on DV", |
| 1191 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1192 | break; |
| 1193 | case 0x04: |
| 1194 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1195 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1196 | "interface 0x%x on DV", sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1197 | else |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1198 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1199 | "interfaces (0x%x-0x%x) on DV", |
| 1200 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1201 | break; |
| 1202 | case 0x05: |
| 1203 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1204 | snprintf(service, BUFSIZE, "Repair will disable loader" |
| 1205 | " 0x%x on DV", sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1206 | else |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1207 | snprintf(service, BUFSIZE, "Repair will disable loader" |
| 1208 | " (0x%x-0x%x) on DV", |
| 1209 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1210 | break; |
| 1211 | case 0x07: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1212 | snprintf(service, BUFSIZE, "Repair will disable access to DV"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1213 | break; |
| 1214 | case 0x08: |
| 1215 | if (sense->fmt.f71.mdf == 0) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1216 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1217 | "message display 0x%x on DV", |
| 1218 | sense->fmt.f71.md[1]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1219 | else |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1220 | snprintf(service, BUFSIZE, "Repair will disable " |
| 1221 | "message displays (0x%x-0x%x) on DV", |
| 1222 | sense->fmt.f71.md[1], sense->fmt.f71.md[2]); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1223 | break; |
| 1224 | case 0x09: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1225 | snprintf(service, BUFSIZE, "Clean DV"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1226 | break; |
| 1227 | default: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1228 | snprintf(service, BUFSIZE, "0x%02x", |
| 1229 | sense->fmt.f71.smc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1230 | } |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1231 | |
| 1232 | dev_warn (&device->cdev->dev, "Device subsystem information: exception" |
| 1233 | " %s, service %s\n", exception, service); |
| 1234 | out_nomem: |
| 1235 | kfree(exception); |
| 1236 | kfree(service); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1237 | } |
| 1238 | |
| 1239 | /* |
| 1240 | * Print standard ERA Message |
| 1241 | */ |
| 1242 | static void |
| 1243 | tape_3590_print_era_msg(struct tape_device *device, struct irb *irb) |
| 1244 | { |
| 1245 | struct tape_3590_sense *sense; |
| 1246 | |
| 1247 | sense = (struct tape_3590_sense *) irb->ecw; |
| 1248 | if (sense->mc == 0) |
| 1249 | return; |
| 1250 | if ((sense->mc > 0) && (sense->mc < TAPE_3590_MAX_MSG)) { |
| 1251 | if (tape_3590_msg[sense->mc] != NULL) |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1252 | dev_warn (&device->cdev->dev, "The tape unit has " |
| 1253 | "issued sense message %s\n", |
| 1254 | tape_3590_msg[sense->mc]); |
| 1255 | else |
| 1256 | dev_warn (&device->cdev->dev, "The tape unit has " |
| 1257 | "issued an unknown sense message code 0x%x\n", |
| 1258 | sense->mc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1259 | return; |
| 1260 | } |
| 1261 | if (sense->mc == 0xf0) { |
| 1262 | /* Standard Media Information Message */ |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1263 | dev_warn (&device->cdev->dev, "MIM SEV=%i, MC=%02x, ES=%x/%x, " |
| 1264 | "RC=%02x-%04x-%02x\n", sense->fmt.f70.sev, sense->mc, |
| 1265 | sense->fmt.f70.emc, sense->fmt.f70.smc, |
| 1266 | sense->fmt.f70.refcode, sense->fmt.f70.mid, |
| 1267 | sense->fmt.f70.fid); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1268 | tape_3590_print_mim_msg_f0(device, irb); |
| 1269 | return; |
| 1270 | } |
| 1271 | if (sense->mc == 0xf1) { |
| 1272 | /* Standard I/O Subsystem Service Information Message */ |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1273 | dev_warn (&device->cdev->dev, "IOSIM SEV=%i, DEVTYPE=3590/%02x," |
| 1274 | " MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", |
| 1275 | sense->fmt.f71.sev, device->cdev->id.dev_model, |
| 1276 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, |
| 1277 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, |
| 1278 | sense->fmt.f71.refcode3); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1279 | tape_3590_print_io_sim_msg_f1(device, irb); |
| 1280 | return; |
| 1281 | } |
| 1282 | if (sense->mc == 0xf2) { |
| 1283 | /* Standard Device Service Information Message */ |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1284 | dev_warn (&device->cdev->dev, "DEVSIM SEV=%i, DEVTYPE=3590/%02x" |
| 1285 | ", MC=%02x, ES=%x/%x, REF=0x%04x-0x%04x-0x%04x\n", |
| 1286 | sense->fmt.f71.sev, device->cdev->id.dev_model, |
| 1287 | sense->mc, sense->fmt.f71.emc, sense->fmt.f71.smc, |
| 1288 | sense->fmt.f71.refcode1, sense->fmt.f71.refcode2, |
| 1289 | sense->fmt.f71.refcode3); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1290 | tape_3590_print_dev_sim_msg_f2(device, irb); |
| 1291 | return; |
| 1292 | } |
| 1293 | if (sense->mc == 0xf3) { |
| 1294 | /* Standard Library Service Information Message */ |
| 1295 | return; |
| 1296 | } |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1297 | dev_warn (&device->cdev->dev, "The tape unit has issued an unknown " |
| 1298 | "sense message code %x\n", sense->mc); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1299 | } |
| 1300 | |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1301 | static int tape_3590_crypt_error(struct tape_device *device, |
| 1302 | struct tape_request *request, struct irb *irb) |
| 1303 | { |
Heiko Carstens | 160fbf2 | 2011-05-23 10:24:28 +0200 | [diff] [blame] | 1304 | u8 cu_rc; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1305 | u16 ekm_rc2; |
Kay Sievers | 2a0217d | 2008-10-10 21:33:09 +0200 | [diff] [blame] | 1306 | char *sense; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1307 | |
| 1308 | sense = ((struct tape_3590_sense *) irb->ecw)->fmt.data; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1309 | cu_rc = sense[0]; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1310 | ekm_rc2 = *((u16*) &sense[10]); |
| 1311 | if ((cu_rc == 0) && (ekm_rc2 == 0xee31)) |
| 1312 | /* key not defined on EKM */ |
| 1313 | return tape_3590_erp_basic(device, request, irb, -EKEYREJECTED); |
| 1314 | if ((cu_rc == 1) || (cu_rc == 2)) |
| 1315 | /* No connection to EKM */ |
| 1316 | return tape_3590_erp_basic(device, request, irb, -ENOTCONN); |
| 1317 | |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1318 | dev_err (&device->cdev->dev, "The tape unit failed to obtain the " |
| 1319 | "encryption key from EKM\n"); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1320 | |
| 1321 | return tape_3590_erp_basic(device, request, irb, -ENOKEY); |
| 1322 | } |
| 1323 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1324 | /* |
| 1325 | * 3590 error Recovery routine: |
| 1326 | * If possible, it tries to recover from the error. If this is not possible, |
| 1327 | * inform the user about the problem. |
| 1328 | */ |
| 1329 | static int |
| 1330 | tape_3590_unit_check(struct tape_device *device, struct tape_request *request, |
| 1331 | struct irb *irb) |
| 1332 | { |
| 1333 | struct tape_3590_sense *sense; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1334 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1335 | sense = (struct tape_3590_sense *) irb->ecw; |
| 1336 | |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1337 | DBF_EVENT(6, "Unit Check: RQC = %x\n", sense->rc_rqc); |
| 1338 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1339 | /* |
| 1340 | * First check all RC-QRCs where we want to do something special |
| 1341 | * - "break": basic error recovery is done |
| 1342 | * - "goto out:": just print error message if available |
| 1343 | */ |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1344 | switch (sense->rc_rqc) { |
| 1345 | |
| 1346 | case 0x1110: |
| 1347 | tape_3590_print_era_msg(device, irb); |
| 1348 | return tape_3590_erp_read_buf_log(device, request, irb); |
| 1349 | |
| 1350 | case 0x2011: |
| 1351 | tape_3590_print_era_msg(device, irb); |
| 1352 | return tape_3590_erp_read_alternate(device, request, irb); |
| 1353 | |
| 1354 | case 0x2230: |
| 1355 | case 0x2231: |
| 1356 | tape_3590_print_era_msg(device, irb); |
| 1357 | return tape_3590_erp_special_interrupt(device, request, irb); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1358 | case 0x2240: |
| 1359 | return tape_3590_crypt_error(device, request, irb); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1360 | |
| 1361 | case 0x3010: |
| 1362 | DBF_EVENT(2, "(%08x): Backward at Beginning of Partition\n", |
| 1363 | device->cdev_id); |
| 1364 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); |
| 1365 | case 0x3012: |
| 1366 | DBF_EVENT(2, "(%08x): Forward at End of Partition\n", |
| 1367 | device->cdev_id); |
| 1368 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); |
| 1369 | case 0x3020: |
| 1370 | DBF_EVENT(2, "(%08x): End of Data Mark\n", device->cdev_id); |
| 1371 | return tape_3590_erp_basic(device, request, irb, -ENOSPC); |
| 1372 | |
| 1373 | case 0x3122: |
| 1374 | DBF_EVENT(2, "(%08x): Rewind Unload initiated\n", |
| 1375 | device->cdev_id); |
| 1376 | return tape_3590_erp_basic(device, request, irb, -EIO); |
| 1377 | case 0x3123: |
| 1378 | DBF_EVENT(2, "(%08x): Rewind Unload complete\n", |
| 1379 | device->cdev_id); |
| 1380 | tape_med_state_set(device, MS_UNLOADED); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1381 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1382 | return tape_3590_erp_basic(device, request, irb, 0); |
| 1383 | |
| 1384 | case 0x4010: |
| 1385 | /* |
| 1386 | * print additional msg since default msg |
| 1387 | * "device intervention" is not very meaningfull |
| 1388 | */ |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1389 | tape_med_state_set(device, MS_UNLOADED); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1390 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1391 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
| 1392 | case 0x4012: /* Device Long Busy */ |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1393 | /* XXX: Also use long busy handling here? */ |
| 1394 | DBF_EVENT(6, "(%08x): LONG BUSY\n", device->cdev_id); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1395 | tape_3590_print_era_msg(device, irb); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1396 | return tape_3590_erp_basic(device, request, irb, -EBUSY); |
| 1397 | case 0x4014: |
| 1398 | DBF_EVENT(6, "(%08x): Crypto LONG BUSY\n", device->cdev_id); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1399 | return tape_3590_erp_long_busy(device, request, irb); |
| 1400 | |
| 1401 | case 0x5010: |
| 1402 | if (sense->rac == 0xd0) { |
| 1403 | /* Swap */ |
| 1404 | tape_3590_print_era_msg(device, irb); |
| 1405 | return tape_3590_erp_swap(device, request, irb); |
| 1406 | } |
| 1407 | if (sense->rac == 0x26) { |
| 1408 | /* Read Opposite */ |
| 1409 | tape_3590_print_era_msg(device, irb); |
| 1410 | return tape_3590_erp_read_opposite(device, request, |
| 1411 | irb); |
| 1412 | } |
| 1413 | return tape_3590_erp_basic(device, request, irb, -EIO); |
| 1414 | case 0x5020: |
| 1415 | case 0x5021: |
| 1416 | case 0x5022: |
| 1417 | case 0x5040: |
| 1418 | case 0x5041: |
| 1419 | case 0x5042: |
| 1420 | tape_3590_print_era_msg(device, irb); |
| 1421 | return tape_3590_erp_swap(device, request, irb); |
| 1422 | |
| 1423 | case 0x5110: |
| 1424 | case 0x5111: |
| 1425 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); |
| 1426 | |
| 1427 | case 0x5120: |
| 1428 | case 0x1120: |
| 1429 | tape_med_state_set(device, MS_UNLOADED); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1430 | tape_3590_schedule_work(device, TO_CRYPT_OFF); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1431 | return tape_3590_erp_basic(device, request, irb, -ENOMEDIUM); |
| 1432 | |
| 1433 | case 0x6020: |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1434 | return tape_3590_erp_basic(device, request, irb, -EMEDIUMTYPE); |
| 1435 | |
| 1436 | case 0x8011: |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1437 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
| 1438 | case 0x8013: |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1439 | dev_warn (&device->cdev->dev, "A different host has privileged" |
| 1440 | " access to the tape unit\n"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1441 | return tape_3590_erp_basic(device, request, irb, -EPERM); |
| 1442 | default: |
| 1443 | return tape_3590_erp_basic(device, request, irb, -EIO); |
| 1444 | } |
| 1445 | } |
| 1446 | |
| 1447 | /* |
| 1448 | * 3590 interrupt handler: |
| 1449 | */ |
| 1450 | static int |
| 1451 | tape_3590_irq(struct tape_device *device, struct tape_request *request, |
| 1452 | struct irb *irb) |
| 1453 | { |
| 1454 | if (request == NULL) |
| 1455 | return tape_3590_unsolicited_irq(device, irb); |
| 1456 | |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 1457 | if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) && |
| 1458 | (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) && |
| 1459 | (request->op == TO_WRI)) { |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1460 | /* Write at end of volume */ |
| 1461 | DBF_EVENT(2, "End of volume\n"); |
| 1462 | return tape_3590_erp_failed(device, request, irb, -ENOSPC); |
| 1463 | } |
| 1464 | |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 1465 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1466 | return tape_3590_unit_check(device, request, irb); |
| 1467 | |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 1468 | if (irb->scsw.cmd.dstat & DEV_STAT_DEV_END) { |
| 1469 | if (irb->scsw.cmd.dstat == DEV_STAT_UNIT_EXCEP) { |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1470 | if (request->op == TO_FSB || request->op == TO_BSB) |
| 1471 | request->rescnt++; |
| 1472 | else |
| 1473 | DBF_EVENT(5, "Unit Exception!\n"); |
| 1474 | } |
| 1475 | |
| 1476 | return tape_3590_done(device, request); |
| 1477 | } |
| 1478 | |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 1479 | if (irb->scsw.cmd.dstat & DEV_STAT_CHN_END) { |
Masanari Iida | 6774def | 2014-11-05 22:26:48 +0900 | [diff] [blame] | 1480 | DBF_EVENT(2, "channel end\n"); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1481 | return TAPE_IO_PENDING; |
| 1482 | } |
| 1483 | |
Peter Oberparleiter | 23d805b6 | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 1484 | if (irb->scsw.cmd.dstat & DEV_STAT_ATTENTION) { |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1485 | DBF_EVENT(2, "Unit Attention when busy..\n"); |
| 1486 | return TAPE_IO_PENDING; |
| 1487 | } |
| 1488 | |
| 1489 | DBF_EVENT(6, "xunknownirq\n"); |
Carsten Otte | ab640db | 2009-03-26 15:24:38 +0100 | [diff] [blame] | 1490 | tape_dump_sense_dbf(device, request, irb); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1491 | return TAPE_IO_STOP; |
| 1492 | } |
| 1493 | |
Michael Holzheu | e296306 | 2007-05-04 18:47:53 +0200 | [diff] [blame] | 1494 | |
| 1495 | static int tape_3590_read_dev_chars(struct tape_device *device, |
| 1496 | struct tape_3590_rdc_data *rdc_data) |
| 1497 | { |
| 1498 | int rc; |
| 1499 | struct tape_request *request; |
| 1500 | |
| 1501 | request = tape_alloc_request(1, sizeof(*rdc_data)); |
| 1502 | if (IS_ERR(request)) |
| 1503 | return PTR_ERR(request); |
| 1504 | request->op = TO_RDC; |
| 1505 | tape_ccw_end(request->cpaddr, CCW_CMD_RDC, sizeof(*rdc_data), |
| 1506 | request->cpdata); |
| 1507 | rc = tape_do_io(device, request); |
| 1508 | if (rc == 0) |
| 1509 | memcpy(rdc_data, request->cpdata, sizeof(*rdc_data)); |
| 1510 | tape_free_request(request); |
| 1511 | return rc; |
| 1512 | } |
| 1513 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1514 | /* |
| 1515 | * Setup device function |
| 1516 | */ |
| 1517 | static int |
| 1518 | tape_3590_setup_device(struct tape_device *device) |
| 1519 | { |
| 1520 | int rc; |
| 1521 | struct tape_3590_disc_data *data; |
Michael Holzheu | e296306 | 2007-05-04 18:47:53 +0200 | [diff] [blame] | 1522 | struct tape_3590_rdc_data *rdc_data; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1523 | |
| 1524 | DBF_EVENT(6, "3590 device setup\n"); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1525 | data = kzalloc(sizeof(struct tape_3590_disc_data), GFP_KERNEL | GFP_DMA); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1526 | if (data == NULL) |
| 1527 | return -ENOMEM; |
| 1528 | data->read_back_op = READ_PREVIOUS; |
| 1529 | device->discdata = data; |
| 1530 | |
Michael Holzheu | e296306 | 2007-05-04 18:47:53 +0200 | [diff] [blame] | 1531 | rdc_data = kmalloc(sizeof(*rdc_data), GFP_KERNEL | GFP_DMA); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1532 | if (!rdc_data) { |
| 1533 | rc = -ENOMEM; |
| 1534 | goto fail_kmalloc; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1535 | } |
Michael Holzheu | e296306 | 2007-05-04 18:47:53 +0200 | [diff] [blame] | 1536 | rc = tape_3590_read_dev_chars(device, rdc_data); |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1537 | if (rc) { |
| 1538 | DBF_LH(3, "Read device characteristics failed!\n"); |
Julia Lawall | 1783e60 | 2008-06-10 10:03:25 +0200 | [diff] [blame] | 1539 | goto fail_rdc_data; |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1540 | } |
| 1541 | rc = tape_std_assign(device); |
| 1542 | if (rc) |
| 1543 | goto fail_rdc_data; |
Michael Holzheu | e296306 | 2007-05-04 18:47:53 +0200 | [diff] [blame] | 1544 | if (rdc_data->data[31] == 0x13) { |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1545 | data->crypt_info.capability |= TAPE390_CRYPT_SUPPORTED_MASK; |
| 1546 | tape_3592_disable_crypt(device); |
| 1547 | } else { |
| 1548 | DBF_EVENT(6, "Device has NO crypto support\n"); |
| 1549 | } |
| 1550 | /* Try to find out if medium is loaded */ |
| 1551 | rc = tape_3590_sense_medium(device); |
| 1552 | if (rc) { |
| 1553 | DBF_LH(3, "3590 medium sense returned %d\n", rc); |
| 1554 | goto fail_rdc_data; |
| 1555 | } |
| 1556 | return 0; |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1557 | |
Michael Holzheu | cced1dd | 2007-02-05 21:18:26 +0100 | [diff] [blame] | 1558 | fail_rdc_data: |
| 1559 | kfree(rdc_data); |
| 1560 | fail_kmalloc: |
| 1561 | kfree(data); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1562 | return rc; |
| 1563 | } |
| 1564 | |
| 1565 | /* |
| 1566 | * Cleanup device function |
| 1567 | */ |
| 1568 | static void |
| 1569 | tape_3590_cleanup_device(struct tape_device *device) |
| 1570 | { |
Tejun Heo | 6dca467 | 2010-12-24 16:00:18 +0100 | [diff] [blame] | 1571 | flush_workqueue(tape_3590_wq); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1572 | tape_std_unassign(device); |
| 1573 | |
| 1574 | kfree(device->discdata); |
| 1575 | device->discdata = NULL; |
| 1576 | } |
| 1577 | |
| 1578 | /* |
| 1579 | * List of 3590 magnetic tape commands. |
| 1580 | */ |
| 1581 | static tape_mtop_fn tape_3590_mtop[TAPE_NR_MTOPS] = { |
| 1582 | [MTRESET] = tape_std_mtreset, |
| 1583 | [MTFSF] = tape_std_mtfsf, |
| 1584 | [MTBSF] = tape_std_mtbsf, |
| 1585 | [MTFSR] = tape_std_mtfsr, |
| 1586 | [MTBSR] = tape_std_mtbsr, |
| 1587 | [MTWEOF] = tape_std_mtweof, |
| 1588 | [MTREW] = tape_std_mtrew, |
| 1589 | [MTOFFL] = tape_std_mtoffl, |
| 1590 | [MTNOP] = tape_std_mtnop, |
| 1591 | [MTRETEN] = tape_std_mtreten, |
| 1592 | [MTBSFM] = tape_std_mtbsfm, |
| 1593 | [MTFSFM] = tape_std_mtfsfm, |
| 1594 | [MTEOM] = tape_std_mteom, |
| 1595 | [MTERASE] = tape_std_mterase, |
| 1596 | [MTRAS1] = NULL, |
| 1597 | [MTRAS2] = NULL, |
| 1598 | [MTRAS3] = NULL, |
| 1599 | [MTSETBLK] = tape_std_mtsetblk, |
| 1600 | [MTSETDENSITY] = NULL, |
| 1601 | [MTSEEK] = tape_3590_mtseek, |
| 1602 | [MTTELL] = tape_3590_mttell, |
| 1603 | [MTSETDRVBUFFER] = NULL, |
| 1604 | [MTFSS] = NULL, |
| 1605 | [MTBSS] = NULL, |
| 1606 | [MTWSM] = NULL, |
| 1607 | [MTLOCK] = NULL, |
| 1608 | [MTUNLOCK] = NULL, |
| 1609 | [MTLOAD] = tape_std_mtload, |
| 1610 | [MTUNLOAD] = tape_std_mtunload, |
| 1611 | [MTCOMPRESSION] = tape_std_mtcompression, |
| 1612 | [MTSETPART] = NULL, |
| 1613 | [MTMKPART] = NULL |
| 1614 | }; |
| 1615 | |
| 1616 | /* |
| 1617 | * Tape discipline structure for 3590. |
| 1618 | */ |
| 1619 | static struct tape_discipline tape_discipline_3590 = { |
| 1620 | .owner = THIS_MODULE, |
| 1621 | .setup_device = tape_3590_setup_device, |
| 1622 | .cleanup_device = tape_3590_cleanup_device, |
| 1623 | .process_eov = tape_std_process_eov, |
| 1624 | .irq = tape_3590_irq, |
| 1625 | .read_block = tape_std_read_block, |
| 1626 | .write_block = tape_std_write_block, |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1627 | .ioctl_fn = tape_3590_ioctl, |
| 1628 | .mtop_array = tape_3590_mtop |
| 1629 | }; |
| 1630 | |
| 1631 | static struct ccw_device_id tape_3590_ids[] = { |
| 1632 | {CCW_DEVICE_DEVTYPE(0x3590, 0, 0x3590, 0), .driver_info = tape_3590}, |
Stefan Bader | 2cc924b | 2006-04-27 18:40:16 -0700 | [diff] [blame] | 1633 | {CCW_DEVICE_DEVTYPE(0x3592, 0, 0x3592, 0), .driver_info = tape_3592}, |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1634 | { /* end of list */ } |
| 1635 | }; |
| 1636 | |
| 1637 | static int |
| 1638 | tape_3590_online(struct ccw_device *cdev) |
| 1639 | { |
Greg Kroah-Hartman | dff59b6 | 2009-05-04 12:40:54 -0700 | [diff] [blame] | 1640 | return tape_generic_online(dev_get_drvdata(&cdev->dev), |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1641 | &tape_discipline_3590); |
| 1642 | } |
| 1643 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1644 | static struct ccw_driver tape_3590_driver = { |
Sebastian Ott | 3bda058 | 2011-03-23 10:16:02 +0100 | [diff] [blame] | 1645 | .driver = { |
| 1646 | .name = "tape_3590", |
| 1647 | .owner = THIS_MODULE, |
| 1648 | }, |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1649 | .ids = tape_3590_ids, |
| 1650 | .probe = tape_generic_probe, |
| 1651 | .remove = tape_generic_remove, |
Frank Munzert | 4d7a3cd | 2009-04-23 13:58:09 +0200 | [diff] [blame] | 1652 | .set_offline = tape_generic_offline, |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1653 | .set_online = tape_3590_online, |
Frank Munzert | 3ef32e62 | 2009-06-16 10:30:39 +0200 | [diff] [blame] | 1654 | .freeze = tape_generic_pm_suspend, |
Heiko Carstens | 420f42e | 2013-01-02 15:18:18 +0100 | [diff] [blame] | 1655 | .int_class = IRQIO_TAP, |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1656 | }; |
| 1657 | |
| 1658 | /* |
| 1659 | * Setup discipline structure. |
| 1660 | */ |
| 1661 | static int |
| 1662 | tape_3590_init(void) |
| 1663 | { |
| 1664 | int rc; |
| 1665 | |
| 1666 | TAPE_DBF_AREA = debug_register("tape_3590", 2, 2, 4 * sizeof(long)); |
| 1667 | debug_register_view(TAPE_DBF_AREA, &debug_sprintf_view); |
| 1668 | #ifdef DBF_LIKE_HELL |
| 1669 | debug_set_level(TAPE_DBF_AREA, 6); |
| 1670 | #endif |
| 1671 | |
| 1672 | DBF_EVENT(3, "3590 init\n"); |
Tejun Heo | 6dca467 | 2010-12-24 16:00:18 +0100 | [diff] [blame] | 1673 | |
| 1674 | tape_3590_wq = alloc_workqueue("tape_3590", 0, 0); |
| 1675 | if (!tape_3590_wq) |
| 1676 | return -ENOMEM; |
| 1677 | |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1678 | /* Register driver for 3590 tapes. */ |
| 1679 | rc = ccw_driver_register(&tape_3590_driver); |
Tejun Heo | 6dca467 | 2010-12-24 16:00:18 +0100 | [diff] [blame] | 1680 | if (rc) { |
| 1681 | destroy_workqueue(tape_3590_wq); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1682 | DBF_EVENT(3, "3590 init failed\n"); |
Tejun Heo | 6dca467 | 2010-12-24 16:00:18 +0100 | [diff] [blame] | 1683 | } else |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1684 | DBF_EVENT(3, "3590 registered\n"); |
| 1685 | return rc; |
| 1686 | } |
| 1687 | |
| 1688 | static void |
| 1689 | tape_3590_exit(void) |
| 1690 | { |
| 1691 | ccw_driver_unregister(&tape_3590_driver); |
Tejun Heo | 6dca467 | 2010-12-24 16:00:18 +0100 | [diff] [blame] | 1692 | destroy_workqueue(tape_3590_wq); |
Stefan Bader | b6cba4e | 2006-03-24 03:15:29 -0800 | [diff] [blame] | 1693 | debug_unregister(TAPE_DBF_AREA); |
| 1694 | } |
| 1695 | |
| 1696 | MODULE_DEVICE_TABLE(ccw, tape_3590_ids); |
| 1697 | MODULE_AUTHOR("(C) 2001,2006 IBM Corporation"); |
| 1698 | MODULE_DESCRIPTION("Linux on zSeries channel attached 3590 tape device driver"); |
| 1699 | MODULE_LICENSE("GPL"); |
| 1700 | |
| 1701 | module_init(tape_3590_init); |
| 1702 | module_exit(tape_3590_exit); |