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_eckd.c |
| 3 | * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 4 | * Horst Hummel <Horst.Hummel@de.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Carsten Otte <Cotte@de.ibm.com> |
| 6 | * Martin Schwidefsky <schwidefsky@de.ibm.com> |
| 7 | * Bugreports.to..: <Linux390@de.ibm.com> |
| 8 | * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 |
Nigel Hislop | ab1d848 | 2008-10-10 21:33:25 +0200 | [diff] [blame] | 9 | * EMC Symmetrix ioctl Copyright EMC Corporation, 2008 |
| 10 | * Author.........: Nigel Hislop <hislop_nigel@emc.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | */ |
| 13 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/stddef.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/hdreg.h> /* HDIO_GETGEO */ |
| 18 | #include <linux/bio.h> |
| 19 | #include <linux/module.h> |
| 20 | #include <linux/init.h> |
| 21 | |
| 22 | #include <asm/debug.h> |
| 23 | #include <asm/idals.h> |
| 24 | #include <asm/ebcdic.h> |
| 25 | #include <asm/io.h> |
| 26 | #include <asm/todclk.h> |
| 27 | #include <asm/uaccess.h> |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 28 | #include <asm/cio.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <asm/ccwdev.h> |
| 30 | |
| 31 | #include "dasd_int.h" |
| 32 | #include "dasd_eckd.h" |
| 33 | |
| 34 | #ifdef PRINTK_HEADER |
| 35 | #undef PRINTK_HEADER |
| 36 | #endif /* PRINTK_HEADER */ |
| 37 | #define PRINTK_HEADER "dasd(eckd):" |
| 38 | |
| 39 | #define ECKD_C0(i) (i->home_bytes) |
| 40 | #define ECKD_F(i) (i->formula) |
| 41 | #define ECKD_F1(i) (ECKD_F(i)==0x01?(i->factors.f_0x01.f1):\ |
| 42 | (i->factors.f_0x02.f1)) |
| 43 | #define ECKD_F2(i) (ECKD_F(i)==0x01?(i->factors.f_0x01.f2):\ |
| 44 | (i->factors.f_0x02.f2)) |
| 45 | #define ECKD_F3(i) (ECKD_F(i)==0x01?(i->factors.f_0x01.f3):\ |
| 46 | (i->factors.f_0x02.f3)) |
| 47 | #define ECKD_F4(i) (ECKD_F(i)==0x02?(i->factors.f_0x02.f4):0) |
| 48 | #define ECKD_F5(i) (ECKD_F(i)==0x02?(i->factors.f_0x02.f5):0) |
| 49 | #define ECKD_F6(i) (i->factor6) |
| 50 | #define ECKD_F7(i) (i->factor7) |
| 51 | #define ECKD_F8(i) (i->factor8) |
| 52 | |
| 53 | MODULE_LICENSE("GPL"); |
| 54 | |
| 55 | static struct dasd_discipline dasd_eckd_discipline; |
| 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | /* The ccw bus type uses this table to find devices that it sends to |
| 58 | * dasd_eckd_probe */ |
| 59 | static struct ccw_device_id dasd_eckd_ids[] = { |
Heiko Carstens | d2c993d | 2006-07-12 16:41:55 +0200 | [diff] [blame] | 60 | { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), .driver_info = 0x1}, |
| 61 | { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), .driver_info = 0x2}, |
| 62 | { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), .driver_info = 0x3}, |
| 63 | { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), .driver_info = 0x4}, |
| 64 | { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), .driver_info = 0x5}, |
| 65 | { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), .driver_info = 0x6}, |
| 66 | { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), .driver_info = 0x7}, |
| 67 | { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), .driver_info = 0x8}, |
| 68 | { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), .driver_info = 0x9}, |
| 69 | { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), .driver_info = 0xa}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | { /* end of list */ }, |
| 71 | }; |
| 72 | |
| 73 | MODULE_DEVICE_TABLE(ccw, dasd_eckd_ids); |
| 74 | |
| 75 | static struct ccw_driver dasd_eckd_driver; /* see below */ |
| 76 | |
| 77 | /* initial attempt at a probe function. this can be simplified once |
| 78 | * the other detection code is gone */ |
| 79 | static int |
| 80 | dasd_eckd_probe (struct ccw_device *cdev) |
| 81 | { |
| 82 | int ret; |
| 83 | |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 84 | /* set ECKD specific ccw-device options */ |
| 85 | ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE); |
| 86 | if (ret) { |
| 87 | printk(KERN_WARNING |
| 88 | "dasd_eckd_probe: could not set ccw-device options " |
Kay Sievers | 2a0217d | 2008-10-10 21:33:09 +0200 | [diff] [blame] | 89 | "for %s\n", dev_name(&cdev->dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | return ret; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 91 | } |
| 92 | ret = dasd_generic_probe(cdev, &dasd_eckd_discipline); |
| 93 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | } |
| 95 | |
| 96 | static int |
| 97 | dasd_eckd_set_online(struct ccw_device *cdev) |
| 98 | { |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 99 | return dasd_generic_set_online(cdev, &dasd_eckd_discipline); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | static struct ccw_driver dasd_eckd_driver = { |
| 103 | .name = "dasd-eckd", |
| 104 | .owner = THIS_MODULE, |
| 105 | .ids = dasd_eckd_ids, |
| 106 | .probe = dasd_eckd_probe, |
| 107 | .remove = dasd_generic_remove, |
| 108 | .set_offline = dasd_generic_set_offline, |
| 109 | .set_online = dasd_eckd_set_online, |
| 110 | .notify = dasd_generic_notify, |
| 111 | }; |
| 112 | |
| 113 | static const int sizes_trk0[] = { 28, 148, 84 }; |
| 114 | #define LABEL_SIZE 140 |
| 115 | |
| 116 | static inline unsigned int |
| 117 | round_up_multiple(unsigned int no, unsigned int mult) |
| 118 | { |
| 119 | int rem = no % mult; |
| 120 | return (rem ? no - rem + mult : no); |
| 121 | } |
| 122 | |
| 123 | static inline unsigned int |
| 124 | ceil_quot(unsigned int d1, unsigned int d2) |
| 125 | { |
| 126 | return (d1 + (d2 - 1)) / d2; |
| 127 | } |
| 128 | |
Heiko Carstens | 4d284ca | 2007-02-05 21:18:53 +0100 | [diff] [blame] | 129 | static unsigned int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | recs_per_track(struct dasd_eckd_characteristics * rdc, |
| 131 | unsigned int kl, unsigned int dl) |
| 132 | { |
| 133 | int dn, kn; |
| 134 | |
| 135 | switch (rdc->dev_type) { |
| 136 | case 0x3380: |
| 137 | if (kl) |
| 138 | return 1499 / (15 + 7 + ceil_quot(kl + 12, 32) + |
| 139 | ceil_quot(dl + 12, 32)); |
| 140 | else |
| 141 | return 1499 / (15 + ceil_quot(dl + 12, 32)); |
| 142 | case 0x3390: |
| 143 | dn = ceil_quot(dl + 6, 232) + 1; |
| 144 | if (kl) { |
| 145 | kn = ceil_quot(kl + 6, 232) + 1; |
| 146 | return 1729 / (10 + 9 + ceil_quot(kl + 6 * kn, 34) + |
| 147 | 9 + ceil_quot(dl + 6 * dn, 34)); |
| 148 | } else |
| 149 | return 1729 / (10 + 9 + ceil_quot(dl + 6 * dn, 34)); |
| 150 | case 0x9345: |
| 151 | dn = ceil_quot(dl + 6, 232) + 1; |
| 152 | if (kl) { |
| 153 | kn = ceil_quot(kl + 6, 232) + 1; |
| 154 | return 1420 / (18 + 7 + ceil_quot(kl + 6 * kn, 34) + |
| 155 | ceil_quot(dl + 6 * dn, 34)); |
| 156 | } else |
| 157 | return 1420 / (18 + 7 + ceil_quot(dl + 6 * dn, 34)); |
| 158 | } |
| 159 | return 0; |
| 160 | } |
| 161 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 162 | static void set_ch_t(struct ch_t *geo, __u32 cyl, __u8 head) |
| 163 | { |
| 164 | geo->cyl = (__u16) cyl; |
| 165 | geo->head = cyl >> 16; |
| 166 | geo->head <<= 4; |
| 167 | geo->head |= head; |
| 168 | } |
| 169 | |
Heiko Carstens | 4d284ca | 2007-02-05 21:18:53 +0100 | [diff] [blame] | 170 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | check_XRC (struct ccw1 *de_ccw, |
| 172 | struct DE_eckd_data *data, |
| 173 | struct dasd_device *device) |
| 174 | { |
| 175 | struct dasd_eckd_private *private; |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 176 | int rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
| 178 | private = (struct dasd_eckd_private *) device->private; |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 179 | if (!private->rdc_data.facilities.XRC_supported) |
| 180 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | |
| 182 | /* switch on System Time Stamp - needed for XRC Support */ |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 183 | data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid' */ |
| 184 | data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */ |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 185 | |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 186 | rc = get_sync_clock(&data->ep_sys_time); |
| 187 | /* Ignore return code if sync clock is switched off. */ |
| 188 | if (rc == -ENOSYS || rc == -EACCES) |
| 189 | rc = 0; |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 190 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 191 | de_ccw->count = sizeof(struct DE_eckd_data); |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 192 | de_ccw->flags |= CCW_FLAG_SLI; |
| 193 | return rc; |
| 194 | } |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 195 | |
Heiko Carstens | 4d284ca | 2007-02-05 21:18:53 +0100 | [diff] [blame] | 196 | static int |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 197 | define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk, |
| 198 | unsigned int totrk, int cmd, struct dasd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | { |
| 200 | struct dasd_eckd_private *private; |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 201 | u32 begcyl, endcyl; |
| 202 | u16 heads, beghead, endhead; |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 203 | int rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | private = (struct dasd_eckd_private *) device->private; |
| 206 | |
| 207 | ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; |
| 208 | ccw->flags = 0; |
| 209 | ccw->count = 16; |
| 210 | ccw->cda = (__u32) __pa(data); |
| 211 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 212 | memset(data, 0, sizeof(struct DE_eckd_data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | switch (cmd) { |
| 214 | case DASD_ECKD_CCW_READ_HOME_ADDRESS: |
| 215 | case DASD_ECKD_CCW_READ_RECORD_ZERO: |
| 216 | case DASD_ECKD_CCW_READ: |
| 217 | case DASD_ECKD_CCW_READ_MT: |
| 218 | case DASD_ECKD_CCW_READ_CKD: |
| 219 | case DASD_ECKD_CCW_READ_CKD_MT: |
| 220 | case DASD_ECKD_CCW_READ_KD: |
| 221 | case DASD_ECKD_CCW_READ_KD_MT: |
| 222 | case DASD_ECKD_CCW_READ_COUNT: |
| 223 | data->mask.perm = 0x1; |
| 224 | data->attributes.operation = private->attrib.operation; |
| 225 | break; |
| 226 | case DASD_ECKD_CCW_WRITE: |
| 227 | case DASD_ECKD_CCW_WRITE_MT: |
| 228 | case DASD_ECKD_CCW_WRITE_KD: |
| 229 | case DASD_ECKD_CCW_WRITE_KD_MT: |
| 230 | data->mask.perm = 0x02; |
| 231 | data->attributes.operation = private->attrib.operation; |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 232 | rc = check_XRC (ccw, data, device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | break; |
| 234 | case DASD_ECKD_CCW_WRITE_CKD: |
| 235 | case DASD_ECKD_CCW_WRITE_CKD_MT: |
| 236 | data->attributes.operation = DASD_BYPASS_CACHE; |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 237 | rc = check_XRC (ccw, data, device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | break; |
| 239 | case DASD_ECKD_CCW_ERASE: |
| 240 | case DASD_ECKD_CCW_WRITE_HOME_ADDRESS: |
| 241 | case DASD_ECKD_CCW_WRITE_RECORD_ZERO: |
| 242 | data->mask.perm = 0x3; |
| 243 | data->mask.auth = 0x1; |
| 244 | data->attributes.operation = DASD_BYPASS_CACHE; |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 245 | rc = check_XRC (ccw, data, device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | break; |
| 247 | default: |
| 248 | DEV_MESSAGE(KERN_ERR, device, "unknown opcode 0x%x", cmd); |
| 249 | break; |
| 250 | } |
| 251 | |
| 252 | data->attributes.mode = 0x3; /* ECKD */ |
| 253 | |
| 254 | if ((private->rdc_data.cu_type == 0x2105 || |
| 255 | private->rdc_data.cu_type == 0x2107 || |
| 256 | private->rdc_data.cu_type == 0x1750) |
| 257 | && !(private->uses_cdl && trk < 2)) |
| 258 | data->ga_extended |= 0x40; /* Regular Data Format Mode */ |
| 259 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 260 | heads = private->rdc_data.trk_per_cyl; |
| 261 | begcyl = trk / heads; |
| 262 | beghead = trk % heads; |
| 263 | endcyl = totrk / heads; |
| 264 | endhead = totrk % heads; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
| 266 | /* check for sequential prestage - enhance cylinder range */ |
| 267 | if (data->attributes.operation == DASD_SEQ_PRESTAGE || |
| 268 | data->attributes.operation == DASD_SEQ_ACCESS) { |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 269 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 270 | if (endcyl + private->attrib.nr_cyl < private->real_cyl) |
| 271 | endcyl += private->attrib.nr_cyl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | else |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 273 | endcyl = (private->real_cyl - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | } |
| 275 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 276 | set_ch_t(&data->beg_ext, begcyl, beghead); |
| 277 | set_ch_t(&data->end_ext, endcyl, endhead); |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 278 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
| 280 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 281 | static int check_XRC_on_prefix(struct PFX_eckd_data *pfxdata, |
| 282 | struct dasd_device *device) |
| 283 | { |
| 284 | struct dasd_eckd_private *private; |
| 285 | int rc; |
| 286 | |
| 287 | private = (struct dasd_eckd_private *) device->private; |
| 288 | if (!private->rdc_data.facilities.XRC_supported) |
| 289 | return 0; |
| 290 | |
| 291 | /* switch on System Time Stamp - needed for XRC Support */ |
| 292 | pfxdata->define_extend.ga_extended |= 0x08; /* 'Time Stamp Valid' */ |
| 293 | pfxdata->define_extend.ga_extended |= 0x02; /* 'Extended Parameter' */ |
| 294 | pfxdata->validity.time_stamp = 1; /* 'Time Stamp Valid' */ |
| 295 | |
| 296 | rc = get_sync_clock(&pfxdata->define_extend.ep_sys_time); |
| 297 | /* Ignore return code if sync clock is switched off. */ |
| 298 | if (rc == -ENOSYS || rc == -EACCES) |
| 299 | rc = 0; |
| 300 | return rc; |
| 301 | } |
| 302 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 303 | static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, |
| 304 | unsigned int trk, unsigned int totrk, int cmd, |
| 305 | struct dasd_device *basedev, struct dasd_device *startdev) |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 306 | { |
| 307 | struct dasd_eckd_private *basepriv, *startpriv; |
| 308 | struct DE_eckd_data *data; |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 309 | u32 begcyl, endcyl; |
| 310 | u16 heads, beghead, endhead; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 311 | int rc = 0; |
| 312 | |
| 313 | basepriv = (struct dasd_eckd_private *) basedev->private; |
| 314 | startpriv = (struct dasd_eckd_private *) startdev->private; |
| 315 | data = &pfxdata->define_extend; |
| 316 | |
| 317 | ccw->cmd_code = DASD_ECKD_CCW_PFX; |
| 318 | ccw->flags = 0; |
| 319 | ccw->count = sizeof(*pfxdata); |
| 320 | ccw->cda = (__u32) __pa(pfxdata); |
| 321 | |
| 322 | memset(pfxdata, 0, sizeof(*pfxdata)); |
| 323 | /* prefix data */ |
| 324 | pfxdata->format = 0; |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 325 | pfxdata->base_address = basepriv->ned->unit_addr; |
| 326 | pfxdata->base_lss = basepriv->ned->ID; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 327 | pfxdata->validity.define_extend = 1; |
| 328 | |
| 329 | /* private uid is kept up to date, conf_data may be outdated */ |
| 330 | if (startpriv->uid.type != UA_BASE_DEVICE) { |
| 331 | pfxdata->validity.verify_base = 1; |
| 332 | if (startpriv->uid.type == UA_HYPER_PAV_ALIAS) |
| 333 | pfxdata->validity.hyper_pav = 1; |
| 334 | } |
| 335 | |
| 336 | /* define extend data (mostly)*/ |
| 337 | switch (cmd) { |
| 338 | case DASD_ECKD_CCW_READ_HOME_ADDRESS: |
| 339 | case DASD_ECKD_CCW_READ_RECORD_ZERO: |
| 340 | case DASD_ECKD_CCW_READ: |
| 341 | case DASD_ECKD_CCW_READ_MT: |
| 342 | case DASD_ECKD_CCW_READ_CKD: |
| 343 | case DASD_ECKD_CCW_READ_CKD_MT: |
| 344 | case DASD_ECKD_CCW_READ_KD: |
| 345 | case DASD_ECKD_CCW_READ_KD_MT: |
| 346 | case DASD_ECKD_CCW_READ_COUNT: |
| 347 | data->mask.perm = 0x1; |
| 348 | data->attributes.operation = basepriv->attrib.operation; |
| 349 | break; |
| 350 | case DASD_ECKD_CCW_WRITE: |
| 351 | case DASD_ECKD_CCW_WRITE_MT: |
| 352 | case DASD_ECKD_CCW_WRITE_KD: |
| 353 | case DASD_ECKD_CCW_WRITE_KD_MT: |
| 354 | data->mask.perm = 0x02; |
| 355 | data->attributes.operation = basepriv->attrib.operation; |
| 356 | rc = check_XRC_on_prefix(pfxdata, basedev); |
| 357 | break; |
| 358 | case DASD_ECKD_CCW_WRITE_CKD: |
| 359 | case DASD_ECKD_CCW_WRITE_CKD_MT: |
| 360 | data->attributes.operation = DASD_BYPASS_CACHE; |
| 361 | rc = check_XRC_on_prefix(pfxdata, basedev); |
| 362 | break; |
| 363 | case DASD_ECKD_CCW_ERASE: |
| 364 | case DASD_ECKD_CCW_WRITE_HOME_ADDRESS: |
| 365 | case DASD_ECKD_CCW_WRITE_RECORD_ZERO: |
| 366 | data->mask.perm = 0x3; |
| 367 | data->mask.auth = 0x1; |
| 368 | data->attributes.operation = DASD_BYPASS_CACHE; |
| 369 | rc = check_XRC_on_prefix(pfxdata, basedev); |
| 370 | break; |
| 371 | default: |
| 372 | DEV_MESSAGE(KERN_ERR, basedev, "unknown opcode 0x%x", cmd); |
| 373 | break; |
| 374 | } |
| 375 | |
| 376 | data->attributes.mode = 0x3; /* ECKD */ |
| 377 | |
| 378 | if ((basepriv->rdc_data.cu_type == 0x2105 || |
| 379 | basepriv->rdc_data.cu_type == 0x2107 || |
| 380 | basepriv->rdc_data.cu_type == 0x1750) |
| 381 | && !(basepriv->uses_cdl && trk < 2)) |
| 382 | data->ga_extended |= 0x40; /* Regular Data Format Mode */ |
| 383 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 384 | heads = basepriv->rdc_data.trk_per_cyl; |
| 385 | begcyl = trk / heads; |
| 386 | beghead = trk % heads; |
| 387 | endcyl = totrk / heads; |
| 388 | endhead = totrk % heads; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 389 | |
| 390 | /* check for sequential prestage - enhance cylinder range */ |
| 391 | if (data->attributes.operation == DASD_SEQ_PRESTAGE || |
| 392 | data->attributes.operation == DASD_SEQ_ACCESS) { |
| 393 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 394 | if (endcyl + basepriv->attrib.nr_cyl < basepriv->real_cyl) |
| 395 | endcyl += basepriv->attrib.nr_cyl; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 396 | else |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 397 | endcyl = (basepriv->real_cyl - 1); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 398 | } |
| 399 | |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 400 | set_ch_t(&data->beg_ext, begcyl, beghead); |
| 401 | set_ch_t(&data->end_ext, endcyl, endhead); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 402 | return rc; |
| 403 | } |
| 404 | |
Heiko Carstens | 4d284ca | 2007-02-05 21:18:53 +0100 | [diff] [blame] | 405 | static void |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 406 | locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, unsigned int trk, |
| 407 | unsigned int rec_on_trk, int no_rec, int cmd, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | struct dasd_device * device, int reclen) |
| 409 | { |
| 410 | struct dasd_eckd_private *private; |
| 411 | int sector; |
| 412 | int dn, d; |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | private = (struct dasd_eckd_private *) device->private; |
| 415 | |
| 416 | DBF_DEV_EVENT(DBF_INFO, device, |
| 417 | "Locate: trk %d, rec %d, no_rec %d, cmd %d, reclen %d", |
| 418 | trk, rec_on_trk, no_rec, cmd, reclen); |
| 419 | |
| 420 | ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD; |
| 421 | ccw->flags = 0; |
| 422 | ccw->count = 16; |
| 423 | ccw->cda = (__u32) __pa(data); |
| 424 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 425 | memset(data, 0, sizeof(struct LO_eckd_data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | sector = 0; |
| 427 | if (rec_on_trk) { |
| 428 | switch (private->rdc_data.dev_type) { |
| 429 | case 0x3390: |
| 430 | dn = ceil_quot(reclen + 6, 232); |
| 431 | d = 9 + ceil_quot(reclen + 6 * (dn + 1), 34); |
| 432 | sector = (49 + (rec_on_trk - 1) * (10 + d)) / 8; |
| 433 | break; |
| 434 | case 0x3380: |
| 435 | d = 7 + ceil_quot(reclen + 12, 32); |
| 436 | sector = (39 + (rec_on_trk - 1) * (8 + d)) / 7; |
| 437 | break; |
| 438 | } |
| 439 | } |
| 440 | data->sector = sector; |
| 441 | data->count = no_rec; |
| 442 | switch (cmd) { |
| 443 | case DASD_ECKD_CCW_WRITE_HOME_ADDRESS: |
| 444 | data->operation.orientation = 0x3; |
| 445 | data->operation.operation = 0x03; |
| 446 | break; |
| 447 | case DASD_ECKD_CCW_READ_HOME_ADDRESS: |
| 448 | data->operation.orientation = 0x3; |
| 449 | data->operation.operation = 0x16; |
| 450 | break; |
| 451 | case DASD_ECKD_CCW_WRITE_RECORD_ZERO: |
| 452 | data->operation.orientation = 0x1; |
| 453 | data->operation.operation = 0x03; |
| 454 | data->count++; |
| 455 | break; |
| 456 | case DASD_ECKD_CCW_READ_RECORD_ZERO: |
| 457 | data->operation.orientation = 0x3; |
| 458 | data->operation.operation = 0x16; |
| 459 | data->count++; |
| 460 | break; |
| 461 | case DASD_ECKD_CCW_WRITE: |
| 462 | case DASD_ECKD_CCW_WRITE_MT: |
| 463 | case DASD_ECKD_CCW_WRITE_KD: |
| 464 | case DASD_ECKD_CCW_WRITE_KD_MT: |
| 465 | data->auxiliary.last_bytes_used = 0x1; |
| 466 | data->length = reclen; |
| 467 | data->operation.operation = 0x01; |
| 468 | break; |
| 469 | case DASD_ECKD_CCW_WRITE_CKD: |
| 470 | case DASD_ECKD_CCW_WRITE_CKD_MT: |
| 471 | data->auxiliary.last_bytes_used = 0x1; |
| 472 | data->length = reclen; |
| 473 | data->operation.operation = 0x03; |
| 474 | break; |
| 475 | case DASD_ECKD_CCW_READ: |
| 476 | case DASD_ECKD_CCW_READ_MT: |
| 477 | case DASD_ECKD_CCW_READ_KD: |
| 478 | case DASD_ECKD_CCW_READ_KD_MT: |
| 479 | data->auxiliary.last_bytes_used = 0x1; |
| 480 | data->length = reclen; |
| 481 | data->operation.operation = 0x06; |
| 482 | break; |
| 483 | case DASD_ECKD_CCW_READ_CKD: |
| 484 | case DASD_ECKD_CCW_READ_CKD_MT: |
| 485 | data->auxiliary.last_bytes_used = 0x1; |
| 486 | data->length = reclen; |
| 487 | data->operation.operation = 0x16; |
| 488 | break; |
| 489 | case DASD_ECKD_CCW_READ_COUNT: |
| 490 | data->operation.operation = 0x06; |
| 491 | break; |
| 492 | case DASD_ECKD_CCW_ERASE: |
| 493 | data->length = reclen; |
| 494 | data->auxiliary.last_bytes_used = 0x1; |
| 495 | data->operation.operation = 0x0b; |
| 496 | break; |
| 497 | default: |
| 498 | DEV_MESSAGE(KERN_ERR, device, "unknown opcode 0x%x", cmd); |
| 499 | } |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 500 | set_ch_t(&data->seek_addr, |
| 501 | trk / private->rdc_data.trk_per_cyl, |
| 502 | trk % private->rdc_data.trk_per_cyl); |
| 503 | data->search_arg.cyl = data->seek_addr.cyl; |
| 504 | data->search_arg.head = data->seek_addr.head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | data->search_arg.record = rec_on_trk; |
| 506 | } |
| 507 | |
| 508 | /* |
| 509 | * Returns 1 if the block is one of the special blocks that needs |
| 510 | * to get read/written with the KD variant of the command. |
| 511 | * That is DASD_ECKD_READ_KD_MT instead of DASD_ECKD_READ_MT and |
| 512 | * DASD_ECKD_WRITE_KD_MT instead of DASD_ECKD_WRITE_MT. |
| 513 | * Luckily the KD variants differ only by one bit (0x08) from the |
| 514 | * normal variant. So don't wonder about code like: |
| 515 | * if (dasd_eckd_cdl_special(blk_per_trk, recid)) |
| 516 | * ccw->cmd_code |= 0x8; |
| 517 | */ |
| 518 | static inline int |
| 519 | dasd_eckd_cdl_special(int blk_per_trk, int recid) |
| 520 | { |
| 521 | if (recid < 3) |
| 522 | return 1; |
| 523 | if (recid < blk_per_trk) |
| 524 | return 0; |
| 525 | if (recid < 2 * blk_per_trk) |
| 526 | return 1; |
| 527 | return 0; |
| 528 | } |
| 529 | |
| 530 | /* |
| 531 | * Returns the record size for the special blocks of the cdl format. |
| 532 | * Only returns something useful if dasd_eckd_cdl_special is true |
| 533 | * for the recid. |
| 534 | */ |
| 535 | static inline int |
| 536 | dasd_eckd_cdl_reclen(int recid) |
| 537 | { |
| 538 | if (recid < 3) |
| 539 | return sizes_trk0[recid]; |
| 540 | return LABEL_SIZE; |
| 541 | } |
| 542 | |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 543 | /* |
| 544 | * Generate device unique id that specifies the physical device. |
| 545 | */ |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 546 | static int dasd_eckd_generate_uid(struct dasd_device *device, |
| 547 | struct dasd_uid *uid) |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 548 | { |
| 549 | struct dasd_eckd_private *private; |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 550 | int count; |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 551 | |
| 552 | private = (struct dasd_eckd_private *) device->private; |
| 553 | if (!private) |
| 554 | return -ENODEV; |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 555 | if (!private->ned || !private->gneq) |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 556 | return -ENODEV; |
| 557 | |
| 558 | memset(uid, 0, sizeof(struct dasd_uid)); |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 559 | memcpy(uid->vendor, private->ned->HDA_manufacturer, |
Horst Hummel | d0710c7 | 2006-08-10 15:45:16 +0200 | [diff] [blame] | 560 | sizeof(uid->vendor) - 1); |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 561 | EBCASC(uid->vendor, sizeof(uid->vendor) - 1); |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 562 | memcpy(uid->serial, private->ned->HDA_location, |
Horst Hummel | d0710c7 | 2006-08-10 15:45:16 +0200 | [diff] [blame] | 563 | sizeof(uid->serial) - 1); |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 564 | EBCASC(uid->serial, sizeof(uid->serial) - 1); |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 565 | uid->ssid = private->gneq->subsystemID; |
| 566 | uid->real_unit_addr = private->ned->unit_addr;; |
| 567 | if (private->sneq) { |
| 568 | uid->type = private->sneq->sua_flags; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 569 | if (uid->type == UA_BASE_PAV_ALIAS) |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 570 | uid->base_unit_addr = private->sneq->base_unit_addr; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 571 | } else { |
| 572 | uid->type = UA_BASE_DEVICE; |
| 573 | } |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 574 | if (private->vdsneq) { |
| 575 | for (count = 0; count < 16; count++) { |
| 576 | sprintf(uid->vduit+2*count, "%02x", |
| 577 | private->vdsneq->uit[count]); |
| 578 | } |
| 579 | } |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 580 | return 0; |
| 581 | } |
| 582 | |
Heiko Carstens | 763968e | 2007-05-10 15:45:46 +0200 | [diff] [blame] | 583 | static struct dasd_ccw_req *dasd_eckd_build_rcd_lpm(struct dasd_device *device, |
| 584 | void *rcd_buffer, |
| 585 | struct ciw *ciw, __u8 lpm) |
Cornelia Huck | 17283b5 | 2007-05-04 18:47:51 +0200 | [diff] [blame] | 586 | { |
| 587 | struct dasd_ccw_req *cqr; |
| 588 | struct ccw1 *ccw; |
| 589 | |
| 590 | cqr = dasd_smalloc_request("ECKD", 1 /* RCD */, ciw->count, device); |
| 591 | |
| 592 | if (IS_ERR(cqr)) { |
| 593 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 594 | "Could not allocate RCD request"); |
| 595 | return cqr; |
| 596 | } |
| 597 | |
| 598 | ccw = cqr->cpaddr; |
| 599 | ccw->cmd_code = ciw->cmd; |
| 600 | ccw->cda = (__u32)(addr_t)rcd_buffer; |
| 601 | ccw->count = ciw->count; |
| 602 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 603 | cqr->startdev = device; |
| 604 | cqr->memdev = device; |
| 605 | cqr->block = NULL; |
Cornelia Huck | 17283b5 | 2007-05-04 18:47:51 +0200 | [diff] [blame] | 606 | cqr->expires = 10*HZ; |
| 607 | cqr->lpm = lpm; |
| 608 | clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); |
| 609 | cqr->retries = 2; |
| 610 | cqr->buildclk = get_clock(); |
| 611 | cqr->status = DASD_CQR_FILLED; |
| 612 | return cqr; |
| 613 | } |
| 614 | |
| 615 | static int dasd_eckd_read_conf_lpm(struct dasd_device *device, |
| 616 | void **rcd_buffer, |
| 617 | int *rcd_buffer_size, __u8 lpm) |
| 618 | { |
| 619 | struct ciw *ciw; |
| 620 | char *rcd_buf = NULL; |
| 621 | int ret; |
| 622 | struct dasd_ccw_req *cqr; |
| 623 | |
| 624 | /* |
| 625 | * scan for RCD command in extended SenseID data |
| 626 | */ |
| 627 | ciw = ccw_device_get_ciw(device->cdev, CIW_TYPE_RCD); |
| 628 | if (!ciw || ciw->cmd == 0) { |
| 629 | ret = -EOPNOTSUPP; |
| 630 | goto out_error; |
| 631 | } |
| 632 | rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); |
| 633 | if (!rcd_buf) { |
| 634 | ret = -ENOMEM; |
| 635 | goto out_error; |
| 636 | } |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 637 | |
| 638 | /* |
| 639 | * buffer has to start with EBCDIC "V1.0" to show |
| 640 | * support for virtual device SNEQ |
| 641 | */ |
| 642 | rcd_buf[0] = 0xE5; |
| 643 | rcd_buf[1] = 0xF1; |
| 644 | rcd_buf[2] = 0x4B; |
| 645 | rcd_buf[3] = 0xF0; |
Cornelia Huck | 17283b5 | 2007-05-04 18:47:51 +0200 | [diff] [blame] | 646 | cqr = dasd_eckd_build_rcd_lpm(device, rcd_buf, ciw, lpm); |
| 647 | if (IS_ERR(cqr)) { |
| 648 | ret = PTR_ERR(cqr); |
| 649 | goto out_error; |
| 650 | } |
| 651 | ret = dasd_sleep_on(cqr); |
| 652 | /* |
| 653 | * on success we update the user input parms |
| 654 | */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 655 | dasd_sfree_request(cqr, cqr->memdev); |
Cornelia Huck | 17283b5 | 2007-05-04 18:47:51 +0200 | [diff] [blame] | 656 | if (ret) |
| 657 | goto out_error; |
| 658 | |
| 659 | *rcd_buffer_size = ciw->count; |
| 660 | *rcd_buffer = rcd_buf; |
| 661 | return 0; |
| 662 | out_error: |
| 663 | kfree(rcd_buf); |
| 664 | *rcd_buffer = NULL; |
| 665 | *rcd_buffer_size = 0; |
| 666 | return ret; |
| 667 | } |
| 668 | |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 669 | static int dasd_eckd_identify_conf_parts(struct dasd_eckd_private *private) |
| 670 | { |
| 671 | |
| 672 | struct dasd_sneq *sneq; |
| 673 | int i, count; |
| 674 | |
| 675 | private->ned = NULL; |
| 676 | private->sneq = NULL; |
| 677 | private->vdsneq = NULL; |
| 678 | private->gneq = NULL; |
| 679 | count = private->conf_len / sizeof(struct dasd_sneq); |
| 680 | sneq = (struct dasd_sneq *)private->conf_data; |
| 681 | for (i = 0; i < count; ++i) { |
| 682 | if (sneq->flags.identifier == 1 && sneq->format == 1) |
| 683 | private->sneq = sneq; |
| 684 | else if (sneq->flags.identifier == 1 && sneq->format == 4) |
| 685 | private->vdsneq = (struct vd_sneq *)sneq; |
| 686 | else if (sneq->flags.identifier == 2) |
| 687 | private->gneq = (struct dasd_gneq *)sneq; |
| 688 | else if (sneq->flags.identifier == 3 && sneq->res1 == 1) |
| 689 | private->ned = (struct dasd_ned *)sneq; |
| 690 | sneq++; |
| 691 | } |
| 692 | if (!private->ned || !private->gneq) { |
| 693 | private->ned = NULL; |
| 694 | private->sneq = NULL; |
| 695 | private->vdsneq = NULL; |
| 696 | private->gneq = NULL; |
| 697 | return -EINVAL; |
| 698 | } |
| 699 | return 0; |
| 700 | |
| 701 | }; |
| 702 | |
| 703 | static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len) |
| 704 | { |
| 705 | struct dasd_gneq *gneq; |
| 706 | int i, count, found; |
| 707 | |
| 708 | count = conf_len / sizeof(*gneq); |
| 709 | gneq = (struct dasd_gneq *)conf_data; |
| 710 | found = 0; |
| 711 | for (i = 0; i < count; ++i) { |
| 712 | if (gneq->flags.identifier == 2) { |
| 713 | found = 1; |
| 714 | break; |
| 715 | } |
| 716 | gneq++; |
| 717 | } |
| 718 | if (found) |
| 719 | return ((char *)gneq)[18] & 0x07; |
| 720 | else |
| 721 | return 0; |
| 722 | } |
| 723 | |
| 724 | static int dasd_eckd_read_conf(struct dasd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | { |
| 726 | void *conf_data; |
| 727 | int conf_len, conf_data_saved; |
| 728 | int rc; |
| 729 | __u8 lpm; |
| 730 | struct dasd_eckd_private *private; |
| 731 | struct dasd_eckd_path *path_data; |
| 732 | |
| 733 | private = (struct dasd_eckd_private *) device->private; |
| 734 | path_data = (struct dasd_eckd_path *) &private->path_data; |
| 735 | path_data->opm = ccw_device_get_path_mask(device->cdev); |
| 736 | lpm = 0x80; |
| 737 | conf_data_saved = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | /* get configuration data per operational path */ |
| 739 | for (lpm = 0x80; lpm; lpm>>= 1) { |
| 740 | if (lpm & path_data->opm){ |
Cornelia Huck | 17283b5 | 2007-05-04 18:47:51 +0200 | [diff] [blame] | 741 | rc = dasd_eckd_read_conf_lpm(device, &conf_data, |
| 742 | &conf_len, lpm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | if (rc && rc != -EOPNOTSUPP) { /* -EOPNOTSUPP is ok */ |
| 744 | MESSAGE(KERN_WARNING, |
| 745 | "Read configuration data returned " |
| 746 | "error %d", rc); |
| 747 | return rc; |
| 748 | } |
| 749 | if (conf_data == NULL) { |
| 750 | MESSAGE(KERN_WARNING, "%s", "No configuration " |
| 751 | "data retrieved"); |
Gabriel Craciunescu | d133a96 | 2007-07-31 00:39:19 -0700 | [diff] [blame] | 752 | continue; /* no error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | /* save first valid configuration data */ |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 755 | if (!conf_data_saved) { |
| 756 | kfree(private->conf_data); |
| 757 | private->conf_data = conf_data; |
| 758 | private->conf_len = conf_len; |
| 759 | if (dasd_eckd_identify_conf_parts(private)) { |
| 760 | private->conf_data = NULL; |
| 761 | private->conf_len = 0; |
| 762 | kfree(conf_data); |
| 763 | continue; |
| 764 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | conf_data_saved++; |
| 766 | } |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 767 | switch (dasd_eckd_path_access(conf_data, conf_len)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | case 0x02: |
| 769 | path_data->npm |= lpm; |
| 770 | break; |
| 771 | case 0x03: |
| 772 | path_data->ppm |= lpm; |
| 773 | break; |
| 774 | } |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 775 | if (conf_data != private->conf_data) |
| 776 | kfree(conf_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | } |
| 778 | } |
| 779 | return 0; |
| 780 | } |
| 781 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 782 | static int dasd_eckd_read_features(struct dasd_device *device) |
| 783 | { |
| 784 | struct dasd_psf_prssd_data *prssdp; |
| 785 | struct dasd_rssd_features *features; |
| 786 | struct dasd_ccw_req *cqr; |
| 787 | struct ccw1 *ccw; |
| 788 | int rc; |
| 789 | struct dasd_eckd_private *private; |
| 790 | |
| 791 | private = (struct dasd_eckd_private *) device->private; |
| 792 | cqr = dasd_smalloc_request(dasd_eckd_discipline.name, |
| 793 | 1 /* PSF */ + 1 /* RSSD */ , |
| 794 | (sizeof(struct dasd_psf_prssd_data) + |
| 795 | sizeof(struct dasd_rssd_features)), |
| 796 | device); |
| 797 | if (IS_ERR(cqr)) { |
| 798 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 799 | "Could not allocate initialization request"); |
| 800 | return PTR_ERR(cqr); |
| 801 | } |
| 802 | cqr->startdev = device; |
| 803 | cqr->memdev = device; |
| 804 | cqr->block = NULL; |
| 805 | clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); |
| 806 | cqr->retries = 5; |
| 807 | cqr->expires = 10 * HZ; |
| 808 | |
| 809 | /* Prepare for Read Subsystem Data */ |
| 810 | prssdp = (struct dasd_psf_prssd_data *) cqr->data; |
| 811 | memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data)); |
| 812 | prssdp->order = PSF_ORDER_PRSSD; |
| 813 | prssdp->suborder = 0x41; /* Read Feature Codes */ |
| 814 | /* all other bytes of prssdp must be zero */ |
| 815 | |
| 816 | ccw = cqr->cpaddr; |
| 817 | ccw->cmd_code = DASD_ECKD_CCW_PSF; |
| 818 | ccw->count = sizeof(struct dasd_psf_prssd_data); |
| 819 | ccw->flags |= CCW_FLAG_CC; |
| 820 | ccw->cda = (__u32)(addr_t) prssdp; |
| 821 | |
| 822 | /* Read Subsystem Data - feature codes */ |
| 823 | features = (struct dasd_rssd_features *) (prssdp + 1); |
| 824 | memset(features, 0, sizeof(struct dasd_rssd_features)); |
| 825 | |
| 826 | ccw++; |
| 827 | ccw->cmd_code = DASD_ECKD_CCW_RSSD; |
| 828 | ccw->count = sizeof(struct dasd_rssd_features); |
| 829 | ccw->cda = (__u32)(addr_t) features; |
| 830 | |
| 831 | cqr->buildclk = get_clock(); |
| 832 | cqr->status = DASD_CQR_FILLED; |
| 833 | rc = dasd_sleep_on(cqr); |
| 834 | if (rc == 0) { |
| 835 | prssdp = (struct dasd_psf_prssd_data *) cqr->data; |
| 836 | features = (struct dasd_rssd_features *) (prssdp + 1); |
| 837 | memcpy(&private->features, features, |
| 838 | sizeof(struct dasd_rssd_features)); |
| 839 | } |
| 840 | dasd_sfree_request(cqr, cqr->memdev); |
| 841 | return rc; |
| 842 | } |
| 843 | |
| 844 | |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 845 | /* |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 846 | * Build CP for Perform Subsystem Function - SSC. |
| 847 | */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 848 | static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device) |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 849 | { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 850 | struct dasd_ccw_req *cqr; |
| 851 | struct dasd_psf_ssc_data *psf_ssc_data; |
| 852 | struct ccw1 *ccw; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 853 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 854 | cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ , |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 855 | sizeof(struct dasd_psf_ssc_data), |
| 856 | device); |
| 857 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 858 | if (IS_ERR(cqr)) { |
| 859 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 860 | "Could not allocate PSF-SSC request"); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 861 | return cqr; |
| 862 | } |
| 863 | psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data; |
| 864 | psf_ssc_data->order = PSF_ORDER_SSC; |
| 865 | psf_ssc_data->suborder = 0x88; |
| 866 | psf_ssc_data->reserved[0] = 0x88; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 867 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 868 | ccw = cqr->cpaddr; |
| 869 | ccw->cmd_code = DASD_ECKD_CCW_PSF; |
| 870 | ccw->cda = (__u32)(addr_t)psf_ssc_data; |
| 871 | ccw->count = 66; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 872 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 873 | cqr->startdev = device; |
| 874 | cqr->memdev = device; |
| 875 | cqr->block = NULL; |
| 876 | cqr->expires = 10*HZ; |
| 877 | cqr->buildclk = get_clock(); |
| 878 | cqr->status = DASD_CQR_FILLED; |
| 879 | return cqr; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 880 | } |
| 881 | |
| 882 | /* |
| 883 | * Perform Subsystem Function. |
| 884 | * It is necessary to trigger CIO for channel revalidation since this |
| 885 | * call might change behaviour of DASD devices. |
| 886 | */ |
| 887 | static int |
| 888 | dasd_eckd_psf_ssc(struct dasd_device *device) |
| 889 | { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 890 | struct dasd_ccw_req *cqr; |
| 891 | int rc; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 892 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 893 | cqr = dasd_eckd_build_psf_ssc(device); |
| 894 | if (IS_ERR(cqr)) |
| 895 | return PTR_ERR(cqr); |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 896 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 897 | rc = dasd_sleep_on(cqr); |
| 898 | if (!rc) |
| 899 | /* trigger CIO to reprobe devices */ |
| 900 | css_schedule_reprobe(); |
| 901 | dasd_sfree_request(cqr, cqr->memdev); |
| 902 | return rc; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 903 | } |
| 904 | |
| 905 | /* |
| 906 | * Valide storage server of current device. |
| 907 | */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 908 | static int dasd_eckd_validate_server(struct dasd_device *device) |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 909 | { |
| 910 | int rc; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 911 | struct dasd_eckd_private *private; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 912 | |
| 913 | /* Currently PAV is the only reason to 'validate' server on LPAR */ |
| 914 | if (dasd_nopav || MACHINE_IS_VM) |
| 915 | return 0; |
| 916 | |
| 917 | rc = dasd_eckd_psf_ssc(device); |
Horst Hummel | 8e79a44 | 2006-08-24 13:22:36 +0200 | [diff] [blame] | 918 | /* may be requested feature is not available on server, |
| 919 | * therefore just report error and go ahead */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 920 | private = (struct dasd_eckd_private *) device->private; |
Horst Hummel | 8e79a44 | 2006-08-24 13:22:36 +0200 | [diff] [blame] | 921 | DEV_MESSAGE(KERN_INFO, device, |
| 922 | "PSF-SSC on storage subsystem %s.%s.%04x returned rc=%d", |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 923 | private->uid.vendor, private->uid.serial, |
| 924 | private->uid.ssid, rc); |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 925 | /* RE-Read Configuration Data */ |
| 926 | return dasd_eckd_read_conf(device); |
| 927 | } |
| 928 | |
| 929 | /* |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 930 | * Check device characteristics. |
| 931 | * If the device is accessible using ECKD discipline, the device is enabled. |
| 932 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | static int |
| 934 | dasd_eckd_check_characteristics(struct dasd_device *device) |
| 935 | { |
| 936 | struct dasd_eckd_private *private; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 937 | struct dasd_block *block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | void *rdc_data; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 939 | int is_known, rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | |
| 941 | private = (struct dasd_eckd_private *) device->private; |
| 942 | if (private == NULL) { |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 943 | private = kzalloc(sizeof(struct dasd_eckd_private), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | GFP_KERNEL | GFP_DMA); |
| 945 | if (private == NULL) { |
| 946 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 947 | "memory allocation failed for private " |
| 948 | "data"); |
| 949 | return -ENOMEM; |
| 950 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 951 | device->private = (void *) private; |
| 952 | } |
| 953 | /* Invalidate status of initial analysis. */ |
| 954 | private->init_cqr_status = -1; |
| 955 | /* Set default cache operations. */ |
| 956 | private->attrib.operation = DASD_NORMAL_CACHE; |
| 957 | private->attrib.nr_cyl = 0; |
| 958 | |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 959 | /* Read Configuration Data */ |
| 960 | rc = dasd_eckd_read_conf(device); |
| 961 | if (rc) |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 962 | goto out_err1; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 963 | |
| 964 | /* Generate device unique id and register in devmap */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 965 | rc = dasd_eckd_generate_uid(device, &private->uid); |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 966 | if (rc) |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 967 | goto out_err1; |
| 968 | dasd_set_uid(device->cdev, &private->uid); |
| 969 | |
| 970 | if (private->uid.type == UA_BASE_DEVICE) { |
| 971 | block = dasd_alloc_block(); |
| 972 | if (IS_ERR(block)) { |
| 973 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 974 | "could not allocate dasd block structure"); |
| 975 | rc = PTR_ERR(block); |
| 976 | goto out_err1; |
| 977 | } |
| 978 | device->block = block; |
| 979 | block->base = device; |
| 980 | } |
| 981 | |
| 982 | /* register lcu with alias handling, enable PAV if this is a new lcu */ |
| 983 | is_known = dasd_alias_make_device_known_to_lcu(device); |
| 984 | if (is_known < 0) { |
| 985 | rc = is_known; |
| 986 | goto out_err2; |
| 987 | } |
| 988 | if (!is_known) { |
| 989 | /* new lcu found */ |
| 990 | rc = dasd_eckd_validate_server(device); /* will switch pav on */ |
| 991 | if (rc) |
| 992 | goto out_err3; |
| 993 | } |
| 994 | |
| 995 | /* Read Feature Codes */ |
| 996 | rc = dasd_eckd_read_features(device); |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 997 | if (rc) |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 998 | goto out_err3; |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 999 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | /* Read Device Characteristics */ |
| 1001 | rdc_data = (void *) &(private->rdc_data); |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 1002 | memset(rdc_data, 0, sizeof(rdc_data)); |
Cornelia Huck | 17283b5 | 2007-05-04 18:47:51 +0200 | [diff] [blame] | 1003 | rc = dasd_generic_read_dev_chars(device, "ECKD", &rdc_data, 64); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1004 | if (rc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1005 | DEV_MESSAGE(KERN_WARNING, device, |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 1006 | "Read device characteristics returned " |
| 1007 | "rc=%d", rc); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1008 | goto out_err3; |
| 1009 | } |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1010 | /* find the vaild cylinder size */ |
| 1011 | if (private->rdc_data.no_cyl == LV_COMPAT_CYL && |
| 1012 | private->rdc_data.long_no_cyl) |
| 1013 | private->real_cyl = private->rdc_data.long_no_cyl; |
| 1014 | else |
| 1015 | private->real_cyl = private->rdc_data.no_cyl; |
| 1016 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | DEV_MESSAGE(KERN_INFO, device, |
| 1018 | "%04X/%02X(CU:%04X/%02X) Cyl:%d Head:%d Sec:%d", |
| 1019 | private->rdc_data.dev_type, |
| 1020 | private->rdc_data.dev_model, |
| 1021 | private->rdc_data.cu_type, |
| 1022 | private->rdc_data.cu_model.model, |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1023 | private->real_cyl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | private->rdc_data.trk_per_cyl, |
| 1025 | private->rdc_data.sec_per_trk); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1026 | return 0; |
| 1027 | |
| 1028 | out_err3: |
| 1029 | dasd_alias_disconnect_device_from_lcu(device); |
| 1030 | out_err2: |
| 1031 | dasd_free_block(device->block); |
| 1032 | device->block = NULL; |
| 1033 | out_err1: |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 1034 | kfree(private->conf_data); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1035 | kfree(device->private); |
| 1036 | device->private = NULL; |
Horst Hummel | 3d05259 | 2006-04-27 18:40:28 -0700 | [diff] [blame] | 1037 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | } |
| 1039 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1040 | static void dasd_eckd_uncheck_device(struct dasd_device *device) |
| 1041 | { |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 1042 | struct dasd_eckd_private *private; |
| 1043 | |
| 1044 | private = (struct dasd_eckd_private *) device->private; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1045 | dasd_alias_disconnect_device_from_lcu(device); |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 1046 | private->ned = NULL; |
| 1047 | private->sneq = NULL; |
| 1048 | private->vdsneq = NULL; |
| 1049 | private->gneq = NULL; |
| 1050 | private->conf_len = 0; |
| 1051 | kfree(private->conf_data); |
| 1052 | private->conf_data = NULL; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1053 | } |
| 1054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | static struct dasd_ccw_req * |
| 1056 | dasd_eckd_analysis_ccw(struct dasd_device *device) |
| 1057 | { |
| 1058 | struct dasd_eckd_private *private; |
| 1059 | struct eckd_count *count_data; |
| 1060 | struct LO_eckd_data *LO_data; |
| 1061 | struct dasd_ccw_req *cqr; |
| 1062 | struct ccw1 *ccw; |
| 1063 | int cplength, datasize; |
| 1064 | int i; |
| 1065 | |
| 1066 | private = (struct dasd_eckd_private *) device->private; |
| 1067 | |
| 1068 | cplength = 8; |
| 1069 | datasize = sizeof(struct DE_eckd_data) + 2*sizeof(struct LO_eckd_data); |
| 1070 | cqr = dasd_smalloc_request(dasd_eckd_discipline.name, |
| 1071 | cplength, datasize, device); |
| 1072 | if (IS_ERR(cqr)) |
| 1073 | return cqr; |
| 1074 | ccw = cqr->cpaddr; |
| 1075 | /* Define extent for the first 3 tracks. */ |
| 1076 | define_extent(ccw++, cqr->data, 0, 2, |
| 1077 | DASD_ECKD_CCW_READ_COUNT, device); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1078 | LO_data = cqr->data + sizeof(struct DE_eckd_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | /* Locate record for the first 4 records on track 0. */ |
| 1080 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1081 | locate_record(ccw++, LO_data++, 0, 0, 4, |
| 1082 | DASD_ECKD_CCW_READ_COUNT, device, 0); |
| 1083 | |
| 1084 | count_data = private->count_area; |
| 1085 | for (i = 0; i < 4; i++) { |
| 1086 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1087 | ccw->cmd_code = DASD_ECKD_CCW_READ_COUNT; |
| 1088 | ccw->flags = 0; |
| 1089 | ccw->count = 8; |
| 1090 | ccw->cda = (__u32)(addr_t) count_data; |
| 1091 | ccw++; |
| 1092 | count_data++; |
| 1093 | } |
| 1094 | |
| 1095 | /* Locate record for the first record on track 2. */ |
| 1096 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1097 | locate_record(ccw++, LO_data++, 2, 0, 1, |
| 1098 | DASD_ECKD_CCW_READ_COUNT, device, 0); |
| 1099 | /* Read count ccw. */ |
| 1100 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1101 | ccw->cmd_code = DASD_ECKD_CCW_READ_COUNT; |
| 1102 | ccw->flags = 0; |
| 1103 | ccw->count = 8; |
| 1104 | ccw->cda = (__u32)(addr_t) count_data; |
| 1105 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1106 | cqr->block = NULL; |
| 1107 | cqr->startdev = device; |
| 1108 | cqr->memdev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | cqr->retries = 0; |
| 1110 | cqr->buildclk = get_clock(); |
| 1111 | cqr->status = DASD_CQR_FILLED; |
| 1112 | return cqr; |
| 1113 | } |
| 1114 | |
| 1115 | /* |
| 1116 | * This is the callback function for the init_analysis cqr. It saves |
| 1117 | * the status of the initial analysis ccw before it frees it and kicks |
| 1118 | * the device to continue the startup sequence. This will call |
| 1119 | * dasd_eckd_do_analysis again (if the devices has not been marked |
| 1120 | * for deletion in the meantime). |
| 1121 | */ |
| 1122 | static void |
| 1123 | dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr, void *data) |
| 1124 | { |
| 1125 | struct dasd_eckd_private *private; |
| 1126 | struct dasd_device *device; |
| 1127 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1128 | device = init_cqr->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | private = (struct dasd_eckd_private *) device->private; |
| 1130 | private->init_cqr_status = init_cqr->status; |
| 1131 | dasd_sfree_request(init_cqr, device); |
| 1132 | dasd_kick_device(device); |
| 1133 | } |
| 1134 | |
| 1135 | static int |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1136 | dasd_eckd_start_analysis(struct dasd_block *block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | { |
| 1138 | struct dasd_eckd_private *private; |
| 1139 | struct dasd_ccw_req *init_cqr; |
| 1140 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1141 | private = (struct dasd_eckd_private *) block->base->private; |
| 1142 | init_cqr = dasd_eckd_analysis_ccw(block->base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | if (IS_ERR(init_cqr)) |
| 1144 | return PTR_ERR(init_cqr); |
| 1145 | init_cqr->callback = dasd_eckd_analysis_callback; |
| 1146 | init_cqr->callback_data = NULL; |
| 1147 | init_cqr->expires = 5*HZ; |
| 1148 | dasd_add_request_head(init_cqr); |
| 1149 | return -EAGAIN; |
| 1150 | } |
| 1151 | |
| 1152 | static int |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1153 | dasd_eckd_end_analysis(struct dasd_block *block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1155 | struct dasd_device *device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1156 | struct dasd_eckd_private *private; |
| 1157 | struct eckd_count *count_area; |
| 1158 | unsigned int sb, blk_per_trk; |
| 1159 | int status, i; |
| 1160 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1161 | device = block->base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | private = (struct dasd_eckd_private *) device->private; |
| 1163 | status = private->init_cqr_status; |
| 1164 | private->init_cqr_status = -1; |
| 1165 | if (status != DASD_CQR_DONE) { |
| 1166 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 1167 | "volume analysis returned unformatted disk"); |
| 1168 | return -EMEDIUMTYPE; |
| 1169 | } |
| 1170 | |
| 1171 | private->uses_cdl = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | /* Check Track 0 for Compatible Disk Layout */ |
| 1173 | count_area = NULL; |
| 1174 | for (i = 0; i < 3; i++) { |
| 1175 | if (private->count_area[i].kl != 4 || |
| 1176 | private->count_area[i].dl != dasd_eckd_cdl_reclen(i) - 4) { |
| 1177 | private->uses_cdl = 0; |
| 1178 | break; |
| 1179 | } |
| 1180 | } |
| 1181 | if (i == 3) |
| 1182 | count_area = &private->count_area[4]; |
| 1183 | |
| 1184 | if (private->uses_cdl == 0) { |
| 1185 | for (i = 0; i < 5; i++) { |
| 1186 | if ((private->count_area[i].kl != 0) || |
| 1187 | (private->count_area[i].dl != |
| 1188 | private->count_area[0].dl)) |
| 1189 | break; |
| 1190 | } |
| 1191 | if (i == 5) |
| 1192 | count_area = &private->count_area[0]; |
| 1193 | } else { |
| 1194 | if (private->count_area[3].record == 1) |
| 1195 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 1196 | "Trk 0: no records after VTOC!"); |
| 1197 | } |
| 1198 | if (count_area != NULL && count_area->kl == 0) { |
| 1199 | /* we found notthing violating our disk layout */ |
| 1200 | if (dasd_check_blocksize(count_area->dl) == 0) |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1201 | block->bp_block = count_area->dl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1202 | } |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1203 | if (block->bp_block == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1204 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 1205 | "Volume has incompatible disk layout"); |
| 1206 | return -EMEDIUMTYPE; |
| 1207 | } |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1208 | block->s2b_shift = 0; /* bits to shift 512 to get a block */ |
| 1209 | for (sb = 512; sb < block->bp_block; sb = sb << 1) |
| 1210 | block->s2b_shift++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1212 | blk_per_trk = recs_per_track(&private->rdc_data, 0, block->bp_block); |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1213 | block->blocks = (private->real_cyl * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | private->rdc_data.trk_per_cyl * |
| 1215 | blk_per_trk); |
| 1216 | |
| 1217 | DEV_MESSAGE(KERN_INFO, device, |
| 1218 | "(%dkB blks): %dkB at %dkB/trk %s", |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1219 | (block->bp_block >> 10), |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1220 | ((private->real_cyl * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | private->rdc_data.trk_per_cyl * |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1222 | blk_per_trk * (block->bp_block >> 9)) >> 1), |
| 1223 | ((blk_per_trk * block->bp_block) >> 10), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | private->uses_cdl ? |
| 1225 | "compatible disk layout" : "linux disk layout"); |
| 1226 | |
| 1227 | return 0; |
| 1228 | } |
| 1229 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1230 | static int dasd_eckd_do_analysis(struct dasd_block *block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | { |
| 1232 | struct dasd_eckd_private *private; |
| 1233 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1234 | private = (struct dasd_eckd_private *) block->base->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | if (private->init_cqr_status < 0) |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1236 | return dasd_eckd_start_analysis(block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | else |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1238 | return dasd_eckd_end_analysis(block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | } |
| 1240 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1241 | static int dasd_eckd_ready_to_online(struct dasd_device *device) |
| 1242 | { |
| 1243 | return dasd_alias_add_device(device); |
| 1244 | }; |
| 1245 | |
| 1246 | static int dasd_eckd_online_to_ready(struct dasd_device *device) |
| 1247 | { |
| 1248 | return dasd_alias_remove_device(device); |
| 1249 | }; |
| 1250 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | static int |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1252 | dasd_eckd_fill_geometry(struct dasd_block *block, struct hd_geometry *geo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | { |
| 1254 | struct dasd_eckd_private *private; |
| 1255 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1256 | private = (struct dasd_eckd_private *) block->base->private; |
| 1257 | if (dasd_check_blocksize(block->bp_block) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | geo->sectors = recs_per_track(&private->rdc_data, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1259 | 0, block->bp_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | } |
| 1261 | geo->cylinders = private->rdc_data.no_cyl; |
| 1262 | geo->heads = private->rdc_data.trk_per_cyl; |
| 1263 | return 0; |
| 1264 | } |
| 1265 | |
| 1266 | static struct dasd_ccw_req * |
| 1267 | dasd_eckd_format_device(struct dasd_device * device, |
| 1268 | struct format_data_t * fdata) |
| 1269 | { |
| 1270 | struct dasd_eckd_private *private; |
| 1271 | struct dasd_ccw_req *fcp; |
| 1272 | struct eckd_count *ect; |
| 1273 | struct ccw1 *ccw; |
| 1274 | void *data; |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1275 | int rpt; |
| 1276 | struct ch_t address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | int cplength, datasize; |
| 1278 | int i; |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1279 | int intensity = 0; |
| 1280 | int r0_perm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | |
| 1282 | private = (struct dasd_eckd_private *) device->private; |
| 1283 | rpt = recs_per_track(&private->rdc_data, 0, fdata->blksize); |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1284 | set_ch_t(&address, |
| 1285 | fdata->start_unit / private->rdc_data.trk_per_cyl, |
| 1286 | fdata->start_unit % private->rdc_data.trk_per_cyl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | |
| 1288 | /* Sanity checks. */ |
| 1289 | if (fdata->start_unit >= |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1290 | (private->real_cyl * private->rdc_data.trk_per_cyl)) { |
| 1291 | DEV_MESSAGE(KERN_INFO, device, "Track no %u too big!", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | fdata->start_unit); |
| 1293 | return ERR_PTR(-EINVAL); |
| 1294 | } |
| 1295 | if (fdata->start_unit > fdata->stop_unit) { |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1296 | DEV_MESSAGE(KERN_INFO, device, "Track %u reached! ending.", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | fdata->start_unit); |
| 1298 | return ERR_PTR(-EINVAL); |
| 1299 | } |
| 1300 | if (dasd_check_blocksize(fdata->blksize) != 0) { |
| 1301 | DEV_MESSAGE(KERN_WARNING, device, |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1302 | "Invalid blocksize %u...terminating!", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1303 | fdata->blksize); |
| 1304 | return ERR_PTR(-EINVAL); |
| 1305 | } |
| 1306 | |
| 1307 | /* |
| 1308 | * fdata->intensity is a bit string that tells us what to do: |
| 1309 | * Bit 0: write record zero |
| 1310 | * Bit 1: write home address, currently not supported |
| 1311 | * Bit 2: invalidate tracks |
| 1312 | * Bit 3: use OS/390 compatible disk layout (cdl) |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1313 | * Bit 4: do not allow storage subsystem to modify record zero |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1314 | * Only some bit combinations do make sense. |
| 1315 | */ |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1316 | if (fdata->intensity & 0x10) { |
| 1317 | r0_perm = 0; |
| 1318 | intensity = fdata->intensity & ~0x10; |
| 1319 | } else { |
| 1320 | r0_perm = 1; |
| 1321 | intensity = fdata->intensity; |
| 1322 | } |
| 1323 | switch (intensity) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | case 0x00: /* Normal format */ |
| 1325 | case 0x08: /* Normal format, use cdl. */ |
| 1326 | cplength = 2 + rpt; |
| 1327 | datasize = sizeof(struct DE_eckd_data) + |
| 1328 | sizeof(struct LO_eckd_data) + |
| 1329 | rpt * sizeof(struct eckd_count); |
| 1330 | break; |
| 1331 | case 0x01: /* Write record zero and format track. */ |
| 1332 | case 0x09: /* Write record zero and format track, use cdl. */ |
| 1333 | cplength = 3 + rpt; |
| 1334 | datasize = sizeof(struct DE_eckd_data) + |
| 1335 | sizeof(struct LO_eckd_data) + |
| 1336 | sizeof(struct eckd_count) + |
| 1337 | rpt * sizeof(struct eckd_count); |
| 1338 | break; |
| 1339 | case 0x04: /* Invalidate track. */ |
| 1340 | case 0x0c: /* Invalidate track, use cdl. */ |
| 1341 | cplength = 3; |
| 1342 | datasize = sizeof(struct DE_eckd_data) + |
| 1343 | sizeof(struct LO_eckd_data) + |
| 1344 | sizeof(struct eckd_count); |
| 1345 | break; |
| 1346 | default: |
| 1347 | DEV_MESSAGE(KERN_WARNING, device, "Invalid flags 0x%x.", |
| 1348 | fdata->intensity); |
| 1349 | return ERR_PTR(-EINVAL); |
| 1350 | } |
| 1351 | /* Allocate the format ccw request. */ |
| 1352 | fcp = dasd_smalloc_request(dasd_eckd_discipline.name, |
| 1353 | cplength, datasize, device); |
| 1354 | if (IS_ERR(fcp)) |
| 1355 | return fcp; |
| 1356 | |
| 1357 | data = fcp->data; |
| 1358 | ccw = fcp->cpaddr; |
| 1359 | |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1360 | switch (intensity & ~0x08) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | case 0x00: /* Normal format. */ |
| 1362 | define_extent(ccw++, (struct DE_eckd_data *) data, |
| 1363 | fdata->start_unit, fdata->start_unit, |
| 1364 | DASD_ECKD_CCW_WRITE_CKD, device); |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1365 | /* grant subsystem permission to format R0 */ |
| 1366 | if (r0_perm) |
| 1367 | ((struct DE_eckd_data *)data)->ga_extended |= 0x04; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | data += sizeof(struct DE_eckd_data); |
| 1369 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1370 | locate_record(ccw++, (struct LO_eckd_data *) data, |
| 1371 | fdata->start_unit, 0, rpt, |
| 1372 | DASD_ECKD_CCW_WRITE_CKD, device, |
| 1373 | fdata->blksize); |
| 1374 | data += sizeof(struct LO_eckd_data); |
| 1375 | break; |
| 1376 | case 0x01: /* Write record zero + format track. */ |
| 1377 | define_extent(ccw++, (struct DE_eckd_data *) data, |
| 1378 | fdata->start_unit, fdata->start_unit, |
| 1379 | DASD_ECKD_CCW_WRITE_RECORD_ZERO, |
| 1380 | device); |
| 1381 | data += sizeof(struct DE_eckd_data); |
| 1382 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1383 | locate_record(ccw++, (struct LO_eckd_data *) data, |
| 1384 | fdata->start_unit, 0, rpt + 1, |
| 1385 | DASD_ECKD_CCW_WRITE_RECORD_ZERO, device, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1386 | device->block->bp_block); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | data += sizeof(struct LO_eckd_data); |
| 1388 | break; |
| 1389 | case 0x04: /* Invalidate track. */ |
| 1390 | define_extent(ccw++, (struct DE_eckd_data *) data, |
| 1391 | fdata->start_unit, fdata->start_unit, |
| 1392 | DASD_ECKD_CCW_WRITE_CKD, device); |
| 1393 | data += sizeof(struct DE_eckd_data); |
| 1394 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1395 | locate_record(ccw++, (struct LO_eckd_data *) data, |
| 1396 | fdata->start_unit, 0, 1, |
| 1397 | DASD_ECKD_CCW_WRITE_CKD, device, 8); |
| 1398 | data += sizeof(struct LO_eckd_data); |
| 1399 | break; |
| 1400 | } |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1401 | if (intensity & 0x01) { /* write record zero */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | ect = (struct eckd_count *) data; |
| 1403 | data += sizeof(struct eckd_count); |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1404 | ect->cyl = address.cyl; |
| 1405 | ect->head = address.head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | ect->record = 0; |
| 1407 | ect->kl = 0; |
| 1408 | ect->dl = 8; |
| 1409 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1410 | ccw->cmd_code = DASD_ECKD_CCW_WRITE_RECORD_ZERO; |
| 1411 | ccw->flags = CCW_FLAG_SLI; |
| 1412 | ccw->count = 8; |
| 1413 | ccw->cda = (__u32)(addr_t) ect; |
| 1414 | ccw++; |
| 1415 | } |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1416 | if ((intensity & ~0x08) & 0x04) { /* erase track */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | ect = (struct eckd_count *) data; |
| 1418 | data += sizeof(struct eckd_count); |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1419 | ect->cyl = address.cyl; |
| 1420 | ect->head = address.head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | ect->record = 1; |
| 1422 | ect->kl = 0; |
| 1423 | ect->dl = 0; |
| 1424 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1425 | ccw->cmd_code = DASD_ECKD_CCW_WRITE_CKD; |
| 1426 | ccw->flags = CCW_FLAG_SLI; |
| 1427 | ccw->count = 8; |
| 1428 | ccw->cda = (__u32)(addr_t) ect; |
| 1429 | } else { /* write remaining records */ |
| 1430 | for (i = 0; i < rpt; i++) { |
| 1431 | ect = (struct eckd_count *) data; |
| 1432 | data += sizeof(struct eckd_count); |
Stefan Weinhuber | b44b0ab3 | 2009-03-26 15:23:47 +0100 | [diff] [blame^] | 1433 | ect->cyl = address.cyl; |
| 1434 | ect->head = address.head; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | ect->record = i + 1; |
| 1436 | ect->kl = 0; |
| 1437 | ect->dl = fdata->blksize; |
| 1438 | /* Check for special tracks 0-1 when formatting CDL */ |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1439 | if ((intensity & 0x08) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | fdata->start_unit == 0) { |
| 1441 | if (i < 3) { |
| 1442 | ect->kl = 4; |
| 1443 | ect->dl = sizes_trk0[i] - 4; |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1444 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | } |
Jean-Baptiste Joret | f9a28f7 | 2009-03-26 15:23:46 +0100 | [diff] [blame] | 1446 | if ((intensity & 0x08) && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | fdata->start_unit == 1) { |
| 1448 | ect->kl = 44; |
| 1449 | ect->dl = LABEL_SIZE - 44; |
| 1450 | } |
| 1451 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1452 | ccw->cmd_code = DASD_ECKD_CCW_WRITE_CKD; |
| 1453 | ccw->flags = CCW_FLAG_SLI; |
| 1454 | ccw->count = 8; |
| 1455 | ccw->cda = (__u32)(addr_t) ect; |
| 1456 | ccw++; |
| 1457 | } |
| 1458 | } |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1459 | fcp->startdev = device; |
| 1460 | fcp->memdev = device; |
| 1461 | clear_bit(DASD_CQR_FLAGS_USE_ERP, &fcp->flags); |
| 1462 | fcp->retries = 5; /* set retry counter to enable default ERP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | fcp->buildclk = get_clock(); |
| 1464 | fcp->status = DASD_CQR_FILLED; |
| 1465 | return fcp; |
| 1466 | } |
| 1467 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1468 | static void dasd_eckd_handle_terminated_request(struct dasd_ccw_req *cqr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1470 | cqr->status = DASD_CQR_FILLED; |
| 1471 | if (cqr->block && (cqr->startdev != cqr->block->base)) { |
| 1472 | dasd_eckd_reset_ccw_to_base_io(cqr); |
| 1473 | cqr->startdev = cqr->block->base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | } |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1475 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | |
| 1477 | static dasd_erp_fn_t |
| 1478 | dasd_eckd_erp_action(struct dasd_ccw_req * cqr) |
| 1479 | { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1480 | struct dasd_device *device = (struct dasd_device *) cqr->startdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | struct ccw_device *cdev = device->cdev; |
| 1482 | |
| 1483 | switch (cdev->id.cu_type) { |
| 1484 | case 0x3990: |
| 1485 | case 0x2105: |
| 1486 | case 0x2107: |
| 1487 | case 0x1750: |
| 1488 | return dasd_3990_erp_action; |
| 1489 | case 0x9343: |
| 1490 | case 0x3880: |
| 1491 | default: |
| 1492 | return dasd_default_erp_action; |
| 1493 | } |
| 1494 | } |
| 1495 | |
| 1496 | static dasd_erp_fn_t |
| 1497 | dasd_eckd_erp_postaction(struct dasd_ccw_req * cqr) |
| 1498 | { |
| 1499 | return dasd_default_erp_postaction; |
| 1500 | } |
| 1501 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1502 | |
| 1503 | static void dasd_eckd_handle_unsolicited_interrupt(struct dasd_device *device, |
| 1504 | struct irb *irb) |
| 1505 | { |
| 1506 | char mask; |
| 1507 | |
| 1508 | /* first of all check for state change pending interrupt */ |
| 1509 | mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP; |
Peter Oberparleiter | 23d805b | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 1510 | if ((irb->scsw.cmd.dstat & mask) == mask) { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1511 | dasd_generic_handle_state_change(device); |
| 1512 | return; |
| 1513 | } |
| 1514 | |
| 1515 | /* summary unit check */ |
Peter Oberparleiter | 23d805b | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 1516 | if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) && |
| 1517 | (irb->ecw[7] == 0x0D)) { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1518 | dasd_alias_handle_summary_unit_check(device, irb); |
| 1519 | return; |
| 1520 | } |
| 1521 | |
Stefan Haberland | f60c768 | 2008-04-17 07:46:08 +0200 | [diff] [blame] | 1522 | |
| 1523 | /* service information message SIM */ |
Stefan Haberland | 50afd20 | 2008-12-25 13:38:53 +0100 | [diff] [blame] | 1524 | if (irb->esw.esw0.erw.cons && !(irb->ecw[27] & DASD_SENSE_BIT_0) && |
Stefan Haberland | 9d853ca | 2008-07-17 17:16:41 +0200 | [diff] [blame] | 1525 | ((irb->ecw[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE)) { |
Stefan Haberland | f60c768 | 2008-04-17 07:46:08 +0200 | [diff] [blame] | 1526 | dasd_3990_erp_handle_sim(device, irb->ecw); |
Stefan Haberland | 9d853ca | 2008-07-17 17:16:41 +0200 | [diff] [blame] | 1527 | dasd_schedule_device_bh(device); |
Stefan Haberland | f60c768 | 2008-04-17 07:46:08 +0200 | [diff] [blame] | 1528 | return; |
| 1529 | } |
| 1530 | |
Stefan Haberland | ada3df9 | 2008-10-10 21:33:23 +0200 | [diff] [blame] | 1531 | if ((irb->scsw.cmd.cc == 1) && |
| 1532 | (irb->scsw.cmd.fctl & SCSW_FCTL_START_FUNC) && |
| 1533 | (irb->scsw.cmd.actl & SCSW_ACTL_START_PEND) && |
| 1534 | (irb->scsw.cmd.stctl & SCSW_STCTL_STATUS_PEND)) { |
| 1535 | /* fake irb do nothing, they are handled elsewhere */ |
| 1536 | dasd_schedule_device_bh(device); |
| 1537 | return; |
| 1538 | } |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1539 | |
Stefan Haberland | ada3df9 | 2008-10-10 21:33:23 +0200 | [diff] [blame] | 1540 | if (!(irb->esw.esw0.erw.cons)) { |
| 1541 | /* just report other unsolicited interrupts */ |
| 1542 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1543 | "unsolicited interrupt received"); |
| 1544 | } else { |
| 1545 | DEV_MESSAGE(KERN_ERR, device, "%s", |
| 1546 | "unsolicited interrupt received " |
| 1547 | "(sense available)"); |
| 1548 | device->discipline->dump_sense(device, NULL, irb); |
| 1549 | } |
| 1550 | |
| 1551 | dasd_schedule_device_bh(device); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1552 | return; |
| 1553 | }; |
| 1554 | |
| 1555 | static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev, |
| 1556 | struct dasd_block *block, |
| 1557 | struct request *req) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1558 | { |
| 1559 | struct dasd_eckd_private *private; |
| 1560 | unsigned long *idaws; |
| 1561 | struct LO_eckd_data *LO_data; |
| 1562 | struct dasd_ccw_req *cqr; |
| 1563 | struct ccw1 *ccw; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 1564 | struct req_iterator iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1565 | struct bio_vec *bv; |
| 1566 | char *dst; |
| 1567 | unsigned int blksize, blk_per_trk, off; |
| 1568 | int count, cidaw, cplength, datasize; |
| 1569 | sector_t recid, first_rec, last_rec; |
| 1570 | sector_t first_trk, last_trk; |
| 1571 | unsigned int first_offs, last_offs; |
| 1572 | unsigned char cmd, rcmd; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1573 | int use_prefix; |
| 1574 | struct dasd_device *basedev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1575 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1576 | basedev = block->base; |
| 1577 | private = (struct dasd_eckd_private *) basedev->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | if (rq_data_dir(req) == READ) |
| 1579 | cmd = DASD_ECKD_CCW_READ_MT; |
| 1580 | else if (rq_data_dir(req) == WRITE) |
| 1581 | cmd = DASD_ECKD_CCW_WRITE_MT; |
| 1582 | else |
| 1583 | return ERR_PTR(-EINVAL); |
| 1584 | /* Calculate number of blocks/records per track. */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1585 | blksize = block->bp_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize); |
| 1587 | /* Calculate record id of first and last block. */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1588 | first_rec = first_trk = req->sector >> block->s2b_shift; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | first_offs = sector_div(first_trk, blk_per_trk); |
| 1590 | last_rec = last_trk = |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1591 | (req->sector + req->nr_sectors - 1) >> block->s2b_shift; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | last_offs = sector_div(last_trk, blk_per_trk); |
| 1593 | /* Check struct bio and count the number of blocks for the request. */ |
| 1594 | count = 0; |
| 1595 | cidaw = 0; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 1596 | rq_for_each_segment(bv, req, iter) { |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 1597 | if (bv->bv_len & (blksize - 1)) |
| 1598 | /* Eckd can only do full blocks. */ |
| 1599 | return ERR_PTR(-EINVAL); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1600 | count += bv->bv_len >> (block->s2b_shift + 9); |
Martin Schwidefsky | 347a8dc | 2006-01-06 00:19:28 -0800 | [diff] [blame] | 1601 | #if defined(CONFIG_64BIT) |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 1602 | if (idal_is_needed (page_address(bv->bv_page), bv->bv_len)) |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1603 | cidaw += bv->bv_len >> (block->s2b_shift + 9); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1604 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | } |
| 1606 | /* Paranoia. */ |
| 1607 | if (count != last_rec - first_rec + 1) |
| 1608 | return ERR_PTR(-EINVAL); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1609 | |
| 1610 | /* use the prefix command if available */ |
| 1611 | use_prefix = private->features.feature[8] & 0x01; |
| 1612 | if (use_prefix) { |
| 1613 | /* 1x prefix + number of blocks */ |
| 1614 | cplength = 2 + count; |
| 1615 | /* 1x prefix + cidaws*sizeof(long) */ |
| 1616 | datasize = sizeof(struct PFX_eckd_data) + |
| 1617 | sizeof(struct LO_eckd_data) + |
| 1618 | cidaw * sizeof(unsigned long); |
| 1619 | } else { |
| 1620 | /* 1x define extent + 1x locate record + number of blocks */ |
| 1621 | cplength = 2 + count; |
| 1622 | /* 1x define extent + 1x locate record + cidaws*sizeof(long) */ |
| 1623 | datasize = sizeof(struct DE_eckd_data) + |
| 1624 | sizeof(struct LO_eckd_data) + |
| 1625 | cidaw * sizeof(unsigned long); |
| 1626 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | /* Find out the number of additional locate record ccws for cdl. */ |
| 1628 | if (private->uses_cdl && first_rec < 2*blk_per_trk) { |
| 1629 | if (last_rec >= 2*blk_per_trk) |
| 1630 | count = 2*blk_per_trk - first_rec; |
| 1631 | cplength += count; |
| 1632 | datasize += count*sizeof(struct LO_eckd_data); |
| 1633 | } |
| 1634 | /* Allocate the ccw request. */ |
| 1635 | cqr = dasd_smalloc_request(dasd_eckd_discipline.name, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1636 | cplength, datasize, startdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | if (IS_ERR(cqr)) |
| 1638 | return cqr; |
| 1639 | ccw = cqr->cpaddr; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1640 | /* First ccw is define extent or prefix. */ |
| 1641 | if (use_prefix) { |
| 1642 | if (prefix(ccw++, cqr->data, first_trk, |
| 1643 | last_trk, cmd, basedev, startdev) == -EAGAIN) { |
| 1644 | /* Clock not in sync and XRC is enabled. |
| 1645 | * Try again later. |
| 1646 | */ |
| 1647 | dasd_sfree_request(cqr, startdev); |
| 1648 | return ERR_PTR(-EAGAIN); |
| 1649 | } |
| 1650 | idaws = (unsigned long *) (cqr->data + |
| 1651 | sizeof(struct PFX_eckd_data)); |
| 1652 | } else { |
| 1653 | if (define_extent(ccw++, cqr->data, first_trk, |
| 1654 | last_trk, cmd, startdev) == -EAGAIN) { |
| 1655 | /* Clock not in sync and XRC is enabled. |
| 1656 | * Try again later. |
| 1657 | */ |
| 1658 | dasd_sfree_request(cqr, startdev); |
| 1659 | return ERR_PTR(-EAGAIN); |
| 1660 | } |
| 1661 | idaws = (unsigned long *) (cqr->data + |
| 1662 | sizeof(struct DE_eckd_data)); |
Martin Schwidefsky | d54853e | 2007-02-05 21:18:19 +0100 | [diff] [blame] | 1663 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | /* Build locate_record+read/write/ccws. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | LO_data = (struct LO_eckd_data *) (idaws + cidaw); |
| 1666 | recid = first_rec; |
| 1667 | if (private->uses_cdl == 0 || recid > 2*blk_per_trk) { |
| 1668 | /* Only standard blocks so there is just one locate record. */ |
| 1669 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1670 | locate_record(ccw++, LO_data++, first_trk, first_offs + 1, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1671 | last_rec - recid + 1, cmd, basedev, blksize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | } |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 1673 | rq_for_each_segment(bv, req, iter) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | dst = page_address(bv->bv_page) + bv->bv_offset; |
| 1675 | if (dasd_page_cache) { |
| 1676 | char *copy = kmem_cache_alloc(dasd_page_cache, |
Christoph Lameter | 441e143 | 2006-12-06 20:33:19 -0800 | [diff] [blame] | 1677 | GFP_DMA | __GFP_NOWARN); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1678 | if (copy && rq_data_dir(req) == WRITE) |
| 1679 | memcpy(copy + bv->bv_offset, dst, bv->bv_len); |
| 1680 | if (copy) |
| 1681 | dst = copy + bv->bv_offset; |
| 1682 | } |
| 1683 | for (off = 0; off < bv->bv_len; off += blksize) { |
| 1684 | sector_t trkid = recid; |
| 1685 | unsigned int recoffs = sector_div(trkid, blk_per_trk); |
| 1686 | rcmd = cmd; |
| 1687 | count = blksize; |
| 1688 | /* Locate record for cdl special block ? */ |
| 1689 | if (private->uses_cdl && recid < 2*blk_per_trk) { |
| 1690 | if (dasd_eckd_cdl_special(blk_per_trk, recid)){ |
| 1691 | rcmd |= 0x8; |
| 1692 | count = dasd_eckd_cdl_reclen(recid); |
Horst Hummel | ec5883a | 2005-05-01 08:58:59 -0700 | [diff] [blame] | 1693 | if (count < blksize && |
| 1694 | rq_data_dir(req) == READ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1695 | memset(dst + count, 0xe5, |
| 1696 | blksize - count); |
| 1697 | } |
| 1698 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1699 | locate_record(ccw++, LO_data++, |
| 1700 | trkid, recoffs + 1, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1701 | 1, rcmd, basedev, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | } |
| 1703 | /* Locate record for standard blocks ? */ |
| 1704 | if (private->uses_cdl && recid == 2*blk_per_trk) { |
| 1705 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1706 | locate_record(ccw++, LO_data++, |
| 1707 | trkid, recoffs + 1, |
| 1708 | last_rec - recid + 1, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1709 | cmd, basedev, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1710 | } |
| 1711 | /* Read/write ccw. */ |
| 1712 | ccw[-1].flags |= CCW_FLAG_CC; |
| 1713 | ccw->cmd_code = rcmd; |
| 1714 | ccw->count = count; |
| 1715 | if (idal_is_needed(dst, blksize)) { |
| 1716 | ccw->cda = (__u32)(addr_t) idaws; |
| 1717 | ccw->flags = CCW_FLAG_IDA; |
| 1718 | idaws = idal_create_words(idaws, dst, blksize); |
| 1719 | } else { |
| 1720 | ccw->cda = (__u32)(addr_t) dst; |
| 1721 | ccw->flags = 0; |
| 1722 | } |
| 1723 | ccw++; |
| 1724 | dst += blksize; |
| 1725 | recid++; |
| 1726 | } |
| 1727 | } |
Holger Smolinski | 13de227 | 2009-01-09 12:14:51 +0100 | [diff] [blame] | 1728 | if (blk_noretry_request(req) || |
| 1729 | block->base->features & DASD_FEATURE_FAILFAST) |
Horst Hummel | 1c01b8a | 2006-01-06 00:19:15 -0800 | [diff] [blame] | 1730 | set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1731 | cqr->startdev = startdev; |
| 1732 | cqr->memdev = startdev; |
| 1733 | cqr->block = block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | cqr->expires = 5 * 60 * HZ; /* 5 minutes */ |
| 1735 | cqr->lpm = private->path_data.ppm; |
| 1736 | cqr->retries = 256; |
| 1737 | cqr->buildclk = get_clock(); |
| 1738 | cqr->status = DASD_CQR_FILLED; |
| 1739 | return cqr; |
| 1740 | } |
| 1741 | |
| 1742 | static int |
| 1743 | dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) |
| 1744 | { |
| 1745 | struct dasd_eckd_private *private; |
| 1746 | struct ccw1 *ccw; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 1747 | struct req_iterator iter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | struct bio_vec *bv; |
| 1749 | char *dst, *cda; |
| 1750 | unsigned int blksize, blk_per_trk, off; |
| 1751 | sector_t recid; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 1752 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | |
| 1754 | if (!dasd_page_cache) |
| 1755 | goto out; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1756 | private = (struct dasd_eckd_private *) cqr->block->base->private; |
| 1757 | blksize = cqr->block->bp_block; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1758 | blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1759 | recid = req->sector >> cqr->block->s2b_shift; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | ccw = cqr->cpaddr; |
| 1761 | /* Skip over define extent & locate record. */ |
| 1762 | ccw++; |
| 1763 | if (private->uses_cdl == 0 || recid > 2*blk_per_trk) |
| 1764 | ccw++; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 1765 | rq_for_each_segment(bv, req, iter) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1766 | dst = page_address(bv->bv_page) + bv->bv_offset; |
| 1767 | for (off = 0; off < bv->bv_len; off += blksize) { |
| 1768 | /* Skip locate record. */ |
| 1769 | if (private->uses_cdl && recid <= 2*blk_per_trk) |
| 1770 | ccw++; |
| 1771 | if (dst) { |
| 1772 | if (ccw->flags & CCW_FLAG_IDA) |
| 1773 | cda = *((char **)((addr_t) ccw->cda)); |
| 1774 | else |
| 1775 | cda = (char *)((addr_t) ccw->cda); |
| 1776 | if (dst != cda) { |
| 1777 | if (rq_data_dir(req) == READ) |
| 1778 | memcpy(dst, cda, bv->bv_len); |
| 1779 | kmem_cache_free(dasd_page_cache, |
| 1780 | (void *)((addr_t)cda & PAGE_MASK)); |
| 1781 | } |
| 1782 | dst = NULL; |
| 1783 | } |
| 1784 | ccw++; |
| 1785 | recid++; |
| 1786 | } |
| 1787 | } |
| 1788 | out: |
| 1789 | status = cqr->status == DASD_CQR_DONE; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1790 | dasd_sfree_request(cqr, cqr->memdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1791 | return status; |
| 1792 | } |
| 1793 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1794 | /* |
| 1795 | * Modify ccw chain in cqr so it can be started on a base device. |
| 1796 | * |
| 1797 | * Note that this is not enough to restart the cqr! |
| 1798 | * Either reset cqr->startdev as well (summary unit check handling) |
| 1799 | * or restart via separate cqr (as in ERP handling). |
| 1800 | */ |
| 1801 | void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *cqr) |
| 1802 | { |
| 1803 | struct ccw1 *ccw; |
| 1804 | struct PFX_eckd_data *pfxdata; |
| 1805 | |
| 1806 | ccw = cqr->cpaddr; |
| 1807 | pfxdata = cqr->data; |
| 1808 | |
| 1809 | if (ccw->cmd_code == DASD_ECKD_CCW_PFX) { |
| 1810 | pfxdata->validity.verify_base = 0; |
| 1811 | pfxdata->validity.hyper_pav = 0; |
| 1812 | } |
| 1813 | } |
| 1814 | |
| 1815 | #define DASD_ECKD_CHANQ_MAX_SIZE 4 |
| 1816 | |
| 1817 | static struct dasd_ccw_req *dasd_eckd_build_alias_cp(struct dasd_device *base, |
| 1818 | struct dasd_block *block, |
| 1819 | struct request *req) |
| 1820 | { |
| 1821 | struct dasd_eckd_private *private; |
| 1822 | struct dasd_device *startdev; |
| 1823 | unsigned long flags; |
| 1824 | struct dasd_ccw_req *cqr; |
| 1825 | |
| 1826 | startdev = dasd_alias_get_start_dev(base); |
| 1827 | if (!startdev) |
| 1828 | startdev = base; |
| 1829 | private = (struct dasd_eckd_private *) startdev->private; |
| 1830 | if (private->count >= DASD_ECKD_CHANQ_MAX_SIZE) |
| 1831 | return ERR_PTR(-EBUSY); |
| 1832 | |
| 1833 | spin_lock_irqsave(get_ccwdev_lock(startdev->cdev), flags); |
| 1834 | private->count++; |
| 1835 | cqr = dasd_eckd_build_cp(startdev, block, req); |
| 1836 | if (IS_ERR(cqr)) |
| 1837 | private->count--; |
| 1838 | spin_unlock_irqrestore(get_ccwdev_lock(startdev->cdev), flags); |
| 1839 | return cqr; |
| 1840 | } |
| 1841 | |
| 1842 | static int dasd_eckd_free_alias_cp(struct dasd_ccw_req *cqr, |
| 1843 | struct request *req) |
| 1844 | { |
| 1845 | struct dasd_eckd_private *private; |
| 1846 | unsigned long flags; |
| 1847 | |
| 1848 | spin_lock_irqsave(get_ccwdev_lock(cqr->memdev->cdev), flags); |
| 1849 | private = (struct dasd_eckd_private *) cqr->memdev->private; |
| 1850 | private->count--; |
| 1851 | spin_unlock_irqrestore(get_ccwdev_lock(cqr->memdev->cdev), flags); |
| 1852 | return dasd_eckd_free_cp(cqr, req); |
| 1853 | } |
| 1854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | static int |
| 1856 | dasd_eckd_fill_info(struct dasd_device * device, |
| 1857 | struct dasd_information2_t * info) |
| 1858 | { |
| 1859 | struct dasd_eckd_private *private; |
| 1860 | |
| 1861 | private = (struct dasd_eckd_private *) device->private; |
| 1862 | info->label_block = 2; |
| 1863 | info->FBA_layout = private->uses_cdl ? 0 : 1; |
| 1864 | info->format = private->uses_cdl ? DASD_FORMAT_CDL : DASD_FORMAT_LDL; |
| 1865 | info->characteristics_size = sizeof(struct dasd_eckd_characteristics); |
| 1866 | memcpy(info->characteristics, &private->rdc_data, |
| 1867 | sizeof(struct dasd_eckd_characteristics)); |
Stefan Weinhuber | 4abb08c | 2008-08-01 16:39:09 +0200 | [diff] [blame] | 1868 | info->confdata_size = min((unsigned long)private->conf_len, |
| 1869 | sizeof(info->configuration_data)); |
| 1870 | memcpy(info->configuration_data, private->conf_data, |
| 1871 | info->confdata_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | return 0; |
| 1873 | } |
| 1874 | |
| 1875 | /* |
| 1876 | * SECTION: ioctl functions for eckd devices. |
| 1877 | */ |
| 1878 | |
| 1879 | /* |
| 1880 | * Release device ioctl. |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1881 | * Buils a channel programm to releases a prior reserved |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | * (see dasd_eckd_reserve) device. |
| 1883 | */ |
| 1884 | static int |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 1885 | dasd_eckd_release(struct dasd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1886 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | struct dasd_ccw_req *cqr; |
| 1888 | int rc; |
| 1889 | |
| 1890 | if (!capable(CAP_SYS_ADMIN)) |
| 1891 | return -EACCES; |
| 1892 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | cqr = dasd_smalloc_request(dasd_eckd_discipline.name, |
| 1894 | 1, 32, device); |
| 1895 | if (IS_ERR(cqr)) { |
| 1896 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 1897 | "Could not allocate initialization request"); |
| 1898 | return PTR_ERR(cqr); |
| 1899 | } |
| 1900 | cqr->cpaddr->cmd_code = DASD_ECKD_CCW_RELEASE; |
| 1901 | cqr->cpaddr->flags |= CCW_FLAG_SLI; |
| 1902 | cqr->cpaddr->count = 32; |
| 1903 | cqr->cpaddr->cda = (__u32)(addr_t) cqr->data; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1904 | cqr->startdev = device; |
| 1905 | cqr->memdev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); |
Horst Hummel | 1c01b8a | 2006-01-06 00:19:15 -0800 | [diff] [blame] | 1907 | set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); |
Horst Hummel | 336c340 | 2007-02-05 21:17:24 +0100 | [diff] [blame] | 1908 | cqr->retries = 2; /* set retry counter to enable basic ERP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | cqr->expires = 2 * HZ; |
| 1910 | cqr->buildclk = get_clock(); |
| 1911 | cqr->status = DASD_CQR_FILLED; |
| 1912 | |
| 1913 | rc = dasd_sleep_on_immediatly(cqr); |
| 1914 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1915 | dasd_sfree_request(cqr, cqr->memdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | return rc; |
| 1917 | } |
| 1918 | |
| 1919 | /* |
| 1920 | * Reserve device ioctl. |
| 1921 | * Options are set to 'synchronous wait for interrupt' and |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1922 | * 'timeout the request'. This leads to a terminate IO if |
| 1923 | * the interrupt is outstanding for a certain time. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | */ |
| 1925 | static int |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 1926 | dasd_eckd_reserve(struct dasd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1927 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1928 | struct dasd_ccw_req *cqr; |
| 1929 | int rc; |
| 1930 | |
| 1931 | if (!capable(CAP_SYS_ADMIN)) |
| 1932 | return -EACCES; |
| 1933 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1934 | cqr = dasd_smalloc_request(dasd_eckd_discipline.name, |
| 1935 | 1, 32, device); |
| 1936 | if (IS_ERR(cqr)) { |
| 1937 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 1938 | "Could not allocate initialization request"); |
| 1939 | return PTR_ERR(cqr); |
| 1940 | } |
| 1941 | cqr->cpaddr->cmd_code = DASD_ECKD_CCW_RESERVE; |
| 1942 | cqr->cpaddr->flags |= CCW_FLAG_SLI; |
| 1943 | cqr->cpaddr->count = 32; |
| 1944 | cqr->cpaddr->cda = (__u32)(addr_t) cqr->data; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1945 | cqr->startdev = device; |
| 1946 | cqr->memdev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); |
Horst Hummel | 1c01b8a | 2006-01-06 00:19:15 -0800 | [diff] [blame] | 1948 | set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); |
Horst Hummel | 336c340 | 2007-02-05 21:17:24 +0100 | [diff] [blame] | 1949 | cqr->retries = 2; /* set retry counter to enable basic ERP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | cqr->expires = 2 * HZ; |
| 1951 | cqr->buildclk = get_clock(); |
| 1952 | cqr->status = DASD_CQR_FILLED; |
| 1953 | |
| 1954 | rc = dasd_sleep_on_immediatly(cqr); |
| 1955 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1956 | dasd_sfree_request(cqr, cqr->memdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | return rc; |
| 1958 | } |
| 1959 | |
| 1960 | /* |
| 1961 | * Steal lock ioctl - unconditional reserve device. |
Horst Hummel | 138c014 | 2006-06-29 14:58:12 +0200 | [diff] [blame] | 1962 | * Buils a channel programm to break a device's reservation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | * (unconditional reserve) |
| 1964 | */ |
| 1965 | static int |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 1966 | dasd_eckd_steal_lock(struct dasd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | struct dasd_ccw_req *cqr; |
| 1969 | int rc; |
| 1970 | |
| 1971 | if (!capable(CAP_SYS_ADMIN)) |
| 1972 | return -EACCES; |
| 1973 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | cqr = dasd_smalloc_request(dasd_eckd_discipline.name, |
| 1975 | 1, 32, device); |
| 1976 | if (IS_ERR(cqr)) { |
| 1977 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 1978 | "Could not allocate initialization request"); |
| 1979 | return PTR_ERR(cqr); |
| 1980 | } |
| 1981 | cqr->cpaddr->cmd_code = DASD_ECKD_CCW_SLCK; |
| 1982 | cqr->cpaddr->flags |= CCW_FLAG_SLI; |
| 1983 | cqr->cpaddr->count = 32; |
| 1984 | cqr->cpaddr->cda = (__u32)(addr_t) cqr->data; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1985 | cqr->startdev = device; |
| 1986 | cqr->memdev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); |
Horst Hummel | 1c01b8a | 2006-01-06 00:19:15 -0800 | [diff] [blame] | 1988 | set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); |
Horst Hummel | 336c340 | 2007-02-05 21:17:24 +0100 | [diff] [blame] | 1989 | cqr->retries = 2; /* set retry counter to enable basic ERP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | cqr->expires = 2 * HZ; |
| 1991 | cqr->buildclk = get_clock(); |
| 1992 | cqr->status = DASD_CQR_FILLED; |
| 1993 | |
| 1994 | rc = dasd_sleep_on_immediatly(cqr); |
| 1995 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 1996 | dasd_sfree_request(cqr, cqr->memdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | return rc; |
| 1998 | } |
| 1999 | |
| 2000 | /* |
| 2001 | * Read performance statistics |
| 2002 | */ |
| 2003 | static int |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2004 | dasd_eckd_performance(struct dasd_device *device, void __user *argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2005 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | struct dasd_psf_prssd_data *prssdp; |
| 2007 | struct dasd_rssd_perf_stats_t *stats; |
| 2008 | struct dasd_ccw_req *cqr; |
| 2009 | struct ccw1 *ccw; |
| 2010 | int rc; |
| 2011 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2012 | cqr = dasd_smalloc_request(dasd_eckd_discipline.name, |
| 2013 | 1 /* PSF */ + 1 /* RSSD */ , |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2014 | (sizeof(struct dasd_psf_prssd_data) + |
| 2015 | sizeof(struct dasd_rssd_perf_stats_t)), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2016 | device); |
| 2017 | if (IS_ERR(cqr)) { |
| 2018 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 2019 | "Could not allocate initialization request"); |
| 2020 | return PTR_ERR(cqr); |
| 2021 | } |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2022 | cqr->startdev = device; |
| 2023 | cqr->memdev = device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2024 | cqr->retries = 0; |
| 2025 | cqr->expires = 10 * HZ; |
| 2026 | |
| 2027 | /* Prepare for Read Subsystem Data */ |
| 2028 | prssdp = (struct dasd_psf_prssd_data *) cqr->data; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2029 | memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | prssdp->order = PSF_ORDER_PRSSD; |
Joe Perches | 5d67d16 | 2008-01-26 14:11:20 +0100 | [diff] [blame] | 2031 | prssdp->suborder = 0x01; /* Performance Statistics */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2032 | prssdp->varies[1] = 0x01; /* Perf Statistics for the Subsystem */ |
| 2033 | |
| 2034 | ccw = cqr->cpaddr; |
| 2035 | ccw->cmd_code = DASD_ECKD_CCW_PSF; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2036 | ccw->count = sizeof(struct dasd_psf_prssd_data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | ccw->flags |= CCW_FLAG_CC; |
| 2038 | ccw->cda = (__u32)(addr_t) prssdp; |
| 2039 | |
| 2040 | /* Read Subsystem Data - Performance Statistics */ |
| 2041 | stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2042 | memset(stats, 0, sizeof(struct dasd_rssd_perf_stats_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | |
| 2044 | ccw++; |
| 2045 | ccw->cmd_code = DASD_ECKD_CCW_RSSD; |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2046 | ccw->count = sizeof(struct dasd_rssd_perf_stats_t); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | ccw->cda = (__u32)(addr_t) stats; |
| 2048 | |
| 2049 | cqr->buildclk = get_clock(); |
| 2050 | cqr->status = DASD_CQR_FILLED; |
| 2051 | rc = dasd_sleep_on(cqr); |
| 2052 | if (rc == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | prssdp = (struct dasd_psf_prssd_data *) cqr->data; |
| 2054 | stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1); |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2055 | if (copy_to_user(argp, stats, |
| 2056 | sizeof(struct dasd_rssd_perf_stats_t))) |
| 2057 | rc = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2058 | } |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2059 | dasd_sfree_request(cqr, cqr->memdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | return rc; |
| 2061 | } |
| 2062 | |
| 2063 | /* |
| 2064 | * Get attributes (cache operations) |
| 2065 | * Returnes the cache attributes used in Define Extend (DE). |
| 2066 | */ |
| 2067 | static int |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2068 | dasd_eckd_get_attrib(struct dasd_device *device, void __user *argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | { |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2070 | struct dasd_eckd_private *private = |
| 2071 | (struct dasd_eckd_private *)device->private; |
| 2072 | struct attrib_data_t attrib = private->attrib; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | int rc; |
| 2074 | |
| 2075 | if (!capable(CAP_SYS_ADMIN)) |
| 2076 | return -EACCES; |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2077 | if (!argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2078 | return -EINVAL; |
| 2079 | |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2080 | rc = 0; |
| 2081 | if (copy_to_user(argp, (long *) &attrib, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2082 | sizeof(struct attrib_data_t))) |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2083 | rc = -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | |
| 2085 | return rc; |
| 2086 | } |
| 2087 | |
| 2088 | /* |
| 2089 | * Set attributes (cache operations) |
| 2090 | * Stores the attributes for cache operation to be used in Define Extend (DE). |
| 2091 | */ |
| 2092 | static int |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2093 | dasd_eckd_set_attrib(struct dasd_device *device, void __user *argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2094 | { |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2095 | struct dasd_eckd_private *private = |
| 2096 | (struct dasd_eckd_private *)device->private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | struct attrib_data_t attrib; |
| 2098 | |
| 2099 | if (!capable(CAP_SYS_ADMIN)) |
| 2100 | return -EACCES; |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2101 | if (!argp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | return -EINVAL; |
| 2103 | |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2104 | if (copy_from_user(&attrib, argp, sizeof(struct attrib_data_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | private->attrib = attrib; |
| 2107 | |
| 2108 | DEV_MESSAGE(KERN_INFO, device, |
| 2109 | "cache operation mode set to %x (%i cylinder prestage)", |
| 2110 | private->attrib.operation, private->attrib.nr_cyl); |
| 2111 | return 0; |
| 2112 | } |
| 2113 | |
Nigel Hislop | ab1d848 | 2008-10-10 21:33:25 +0200 | [diff] [blame] | 2114 | /* |
| 2115 | * Issue syscall I/O to EMC Symmetrix array. |
| 2116 | * CCWs are PSF and RSSD |
| 2117 | */ |
| 2118 | static int dasd_symm_io(struct dasd_device *device, void __user *argp) |
| 2119 | { |
| 2120 | struct dasd_symmio_parms usrparm; |
| 2121 | char *psf_data, *rssd_result; |
| 2122 | struct dasd_ccw_req *cqr; |
| 2123 | struct ccw1 *ccw; |
| 2124 | int rc; |
| 2125 | |
| 2126 | /* Copy parms from caller */ |
| 2127 | rc = -EFAULT; |
| 2128 | if (copy_from_user(&usrparm, argp, sizeof(usrparm))) |
| 2129 | goto out; |
| 2130 | #ifndef CONFIG_64BIT |
| 2131 | /* Make sure pointers are sane even on 31 bit. */ |
| 2132 | if ((usrparm.psf_data >> 32) != 0 || (usrparm.rssd_result >> 32) != 0) { |
| 2133 | rc = -EINVAL; |
| 2134 | goto out; |
| 2135 | } |
| 2136 | #endif |
| 2137 | /* alloc I/O data area */ |
| 2138 | psf_data = kzalloc(usrparm.psf_data_len, GFP_KERNEL | GFP_DMA); |
| 2139 | rssd_result = kzalloc(usrparm.rssd_result_len, GFP_KERNEL | GFP_DMA); |
| 2140 | if (!psf_data || !rssd_result) { |
| 2141 | rc = -ENOMEM; |
| 2142 | goto out_free; |
| 2143 | } |
| 2144 | |
| 2145 | /* get syscall header from user space */ |
| 2146 | rc = -EFAULT; |
| 2147 | if (copy_from_user(psf_data, |
| 2148 | (void __user *)(unsigned long) usrparm.psf_data, |
| 2149 | usrparm.psf_data_len)) |
| 2150 | goto out_free; |
| 2151 | |
| 2152 | /* sanity check on syscall header */ |
| 2153 | if (psf_data[0] != 0x17 && psf_data[1] != 0xce) { |
| 2154 | rc = -EINVAL; |
| 2155 | goto out_free; |
| 2156 | } |
| 2157 | |
| 2158 | /* setup CCWs for PSF + RSSD */ |
| 2159 | cqr = dasd_smalloc_request("ECKD", 2 , 0, device); |
| 2160 | if (IS_ERR(cqr)) { |
| 2161 | DEV_MESSAGE(KERN_WARNING, device, "%s", |
| 2162 | "Could not allocate initialization request"); |
| 2163 | rc = PTR_ERR(cqr); |
| 2164 | goto out_free; |
| 2165 | } |
| 2166 | |
| 2167 | cqr->startdev = device; |
| 2168 | cqr->memdev = device; |
| 2169 | cqr->retries = 3; |
| 2170 | cqr->expires = 10 * HZ; |
| 2171 | cqr->buildclk = get_clock(); |
| 2172 | cqr->status = DASD_CQR_FILLED; |
| 2173 | |
| 2174 | /* Build the ccws */ |
| 2175 | ccw = cqr->cpaddr; |
| 2176 | |
| 2177 | /* PSF ccw */ |
| 2178 | ccw->cmd_code = DASD_ECKD_CCW_PSF; |
| 2179 | ccw->count = usrparm.psf_data_len; |
| 2180 | ccw->flags |= CCW_FLAG_CC; |
| 2181 | ccw->cda = (__u32)(addr_t) psf_data; |
| 2182 | |
| 2183 | ccw++; |
| 2184 | |
| 2185 | /* RSSD ccw */ |
| 2186 | ccw->cmd_code = DASD_ECKD_CCW_RSSD; |
| 2187 | ccw->count = usrparm.rssd_result_len; |
| 2188 | ccw->flags = CCW_FLAG_SLI ; |
| 2189 | ccw->cda = (__u32)(addr_t) rssd_result; |
| 2190 | |
| 2191 | rc = dasd_sleep_on(cqr); |
| 2192 | if (rc) |
| 2193 | goto out_sfree; |
| 2194 | |
| 2195 | rc = -EFAULT; |
| 2196 | if (copy_to_user((void __user *)(unsigned long) usrparm.rssd_result, |
| 2197 | rssd_result, usrparm.rssd_result_len)) |
| 2198 | goto out_sfree; |
| 2199 | rc = 0; |
| 2200 | |
| 2201 | out_sfree: |
| 2202 | dasd_sfree_request(cqr, cqr->memdev); |
| 2203 | out_free: |
| 2204 | kfree(rssd_result); |
| 2205 | kfree(psf_data); |
| 2206 | out: |
| 2207 | DBF_DEV_EVENT(DBF_WARNING, device, "Symmetrix ioctl: rc=%d", rc); |
| 2208 | return rc; |
| 2209 | } |
| 2210 | |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2211 | static int |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2212 | dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp) |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2213 | { |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2214 | struct dasd_device *device = block->base; |
| 2215 | |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2216 | switch (cmd) { |
| 2217 | case BIODASDGATTR: |
| 2218 | return dasd_eckd_get_attrib(device, argp); |
| 2219 | case BIODASDSATTR: |
| 2220 | return dasd_eckd_set_attrib(device, argp); |
| 2221 | case BIODASDPSRD: |
| 2222 | return dasd_eckd_performance(device, argp); |
| 2223 | case BIODASDRLSE: |
| 2224 | return dasd_eckd_release(device); |
| 2225 | case BIODASDRSRV: |
| 2226 | return dasd_eckd_reserve(device); |
| 2227 | case BIODASDSLCK: |
| 2228 | return dasd_eckd_steal_lock(device); |
Nigel Hislop | ab1d848 | 2008-10-10 21:33:25 +0200 | [diff] [blame] | 2229 | case BIODASDSYMMIO: |
| 2230 | return dasd_symm_io(device, argp); |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2231 | default: |
| 2232 | return -ENOIOCTLCMD; |
| 2233 | } |
| 2234 | } |
| 2235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | /* |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2237 | * Dump the range of CCWs into 'page' buffer |
| 2238 | * and return number of printed chars. |
| 2239 | */ |
Heiko Carstens | 4d284ca | 2007-02-05 21:18:53 +0100 | [diff] [blame] | 2240 | static int |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2241 | dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page) |
| 2242 | { |
| 2243 | int len, count; |
| 2244 | char *datap; |
| 2245 | |
| 2246 | len = 0; |
| 2247 | while (from <= to) { |
| 2248 | len += sprintf(page + len, KERN_ERR PRINTK_HEADER |
| 2249 | " CCW %p: %08X %08X DAT:", |
| 2250 | from, ((int *) from)[0], ((int *) from)[1]); |
| 2251 | |
| 2252 | /* get pointer to data (consider IDALs) */ |
| 2253 | if (from->flags & CCW_FLAG_IDA) |
| 2254 | datap = (char *) *((addr_t *) (addr_t) from->cda); |
| 2255 | else |
| 2256 | datap = (char *) ((addr_t) from->cda); |
| 2257 | |
| 2258 | /* dump data (max 32 bytes) */ |
| 2259 | for (count = 0; count < from->count && count < 32; count++) { |
| 2260 | if (count % 8 == 0) len += sprintf(page + len, " "); |
| 2261 | if (count % 4 == 0) len += sprintf(page + len, " "); |
| 2262 | len += sprintf(page + len, "%02x", datap[count]); |
| 2263 | } |
| 2264 | len += sprintf(page + len, "\n"); |
| 2265 | from++; |
| 2266 | } |
| 2267 | return len; |
| 2268 | } |
| 2269 | |
| 2270 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2271 | * Print sense data and related channel program. |
| 2272 | * Parts are printed because printk buffer is only 1024 bytes. |
| 2273 | */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2274 | static void dasd_eckd_dump_sense(struct dasd_device *device, |
| 2275 | struct dasd_ccw_req *req, struct irb *irb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2276 | { |
| 2277 | char *page; |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2278 | struct ccw1 *first, *last, *fail, *from, *to; |
| 2279 | int len, sl, sct; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2280 | |
| 2281 | page = (char *) get_zeroed_page(GFP_ATOMIC); |
| 2282 | if (page == NULL) { |
| 2283 | DEV_MESSAGE(KERN_ERR, device, " %s", |
| 2284 | "No memory to dump sense data"); |
| 2285 | return; |
| 2286 | } |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2287 | /* dump the sense data */ |
| 2288 | len = sprintf(page, KERN_ERR PRINTK_HEADER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2289 | " I/O status report for device %s:\n", |
Kay Sievers | 2a0217d | 2008-10-10 21:33:09 +0200 | [diff] [blame] | 2290 | dev_name(&device->cdev->dev)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2291 | len += sprintf(page + len, KERN_ERR PRINTK_HEADER |
| 2292 | " in req: %p CS: 0x%02X DS: 0x%02X\n", req, |
Peter Oberparleiter | 23d805b | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 2293 | irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | len += sprintf(page + len, KERN_ERR PRINTK_HEADER |
| 2295 | " device %s: Failing CCW: %p\n", |
Kay Sievers | 2a0217d | 2008-10-10 21:33:09 +0200 | [diff] [blame] | 2296 | dev_name(&device->cdev->dev), |
Peter Oberparleiter | 23d805b | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 2297 | (void *) (addr_t) irb->scsw.cmd.cpa); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2298 | if (irb->esw.esw0.erw.cons) { |
| 2299 | for (sl = 0; sl < 4; sl++) { |
| 2300 | len += sprintf(page + len, KERN_ERR PRINTK_HEADER |
| 2301 | " Sense(hex) %2d-%2d:", |
| 2302 | (8 * sl), ((8 * sl) + 7)); |
| 2303 | |
| 2304 | for (sct = 0; sct < 8; sct++) { |
| 2305 | len += sprintf(page + len, " %02x", |
| 2306 | irb->ecw[8 * sl + sct]); |
| 2307 | } |
| 2308 | len += sprintf(page + len, "\n"); |
| 2309 | } |
| 2310 | |
| 2311 | if (irb->ecw[27] & DASD_SENSE_BIT_0) { |
| 2312 | /* 24 Byte Sense Data */ |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2313 | sprintf(page + len, KERN_ERR PRINTK_HEADER |
| 2314 | " 24 Byte: %x MSG %x, " |
| 2315 | "%s MSGb to SYSOP\n", |
| 2316 | irb->ecw[7] >> 4, irb->ecw[7] & 0x0f, |
| 2317 | irb->ecw[1] & 0x10 ? "" : "no"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | } else { |
| 2319 | /* 32 Byte Sense Data */ |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2320 | sprintf(page + len, KERN_ERR PRINTK_HEADER |
| 2321 | " 32 Byte: Format: %x " |
| 2322 | "Exception class %x\n", |
| 2323 | irb->ecw[6] & 0x0f, irb->ecw[22] >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2324 | } |
| 2325 | } else { |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2326 | sprintf(page + len, KERN_ERR PRINTK_HEADER |
| 2327 | " SORRY - NO VALID SENSE AVAILABLE\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2328 | } |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2329 | printk("%s", page); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2330 | |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2331 | if (req) { |
| 2332 | /* req == NULL for unsolicited interrupts */ |
| 2333 | /* dump the Channel Program (max 140 Bytes per line) */ |
| 2334 | /* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */ |
| 2335 | first = req->cpaddr; |
| 2336 | for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++); |
| 2337 | to = min(first + 6, last); |
| 2338 | len = sprintf(page, KERN_ERR PRINTK_HEADER |
| 2339 | " Related CP in req: %p\n", req); |
| 2340 | dasd_eckd_dump_ccw_range(first, to, page + len); |
Horst Hummel | 445b5b4 | 2006-06-29 14:57:52 +0200 | [diff] [blame] | 2341 | printk("%s", page); |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2342 | |
| 2343 | /* print failing CCW area (maximum 4) */ |
| 2344 | /* scsw->cda is either valid or zero */ |
| 2345 | len = 0; |
| 2346 | from = ++to; |
Peter Oberparleiter | 23d805b | 2008-07-14 09:58:50 +0200 | [diff] [blame] | 2347 | fail = (struct ccw1 *)(addr_t) |
| 2348 | irb->scsw.cmd.cpa; /* failing CCW */ |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2349 | if (from < fail - 2) { |
| 2350 | from = fail - 2; /* there is a gap - print header */ |
| 2351 | len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n"); |
| 2352 | } |
| 2353 | to = min(fail + 1, last); |
| 2354 | len += dasd_eckd_dump_ccw_range(from, to, page + len); |
| 2355 | |
| 2356 | /* print last CCWs (maximum 2) */ |
| 2357 | from = max(from, ++to); |
| 2358 | if (from < last - 1) { |
| 2359 | from = last - 1; /* there is a gap - print header */ |
| 2360 | len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n"); |
| 2361 | } |
| 2362 | len += dasd_eckd_dump_ccw_range(from, last, page + len); |
| 2363 | if (len > 0) |
| 2364 | printk("%s", page); |
| 2365 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | free_page((unsigned long) page); |
| 2367 | } |
| 2368 | |
| 2369 | /* |
| 2370 | * max_blocks is dependent on the amount of storage that is available |
| 2371 | * in the static io buffer for each device. Currently each device has |
| 2372 | * 8192 bytes (=2 pages). For 64 bit one dasd_mchunkt_t structure has |
| 2373 | * 24 bytes, the struct dasd_ccw_req has 136 bytes and each block can use |
| 2374 | * up to 16 bytes (8 for the ccw and 8 for the idal pointer). In |
| 2375 | * addition we have one define extent ccw + 16 bytes of data and one |
| 2376 | * locate record ccw + 16 bytes of data. That makes: |
| 2377 | * (8192 - 24 - 136 - 8 - 16 - 8 - 16) / 16 = 499 blocks at maximum. |
| 2378 | * We want to fit two into the available memory so that we can immediately |
| 2379 | * start the next request if one finishes off. That makes 249.5 blocks |
| 2380 | * for one request. Give a little safety and the result is 240. |
| 2381 | */ |
| 2382 | static struct dasd_discipline dasd_eckd_discipline = { |
| 2383 | .owner = THIS_MODULE, |
| 2384 | .name = "ECKD", |
| 2385 | .ebcname = "ECKD", |
| 2386 | .max_blocks = 240, |
| 2387 | .check_device = dasd_eckd_check_characteristics, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2388 | .uncheck_device = dasd_eckd_uncheck_device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2389 | .do_analysis = dasd_eckd_do_analysis, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2390 | .ready_to_online = dasd_eckd_ready_to_online, |
| 2391 | .online_to_ready = dasd_eckd_online_to_ready, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | .fill_geometry = dasd_eckd_fill_geometry, |
| 2393 | .start_IO = dasd_start_IO, |
| 2394 | .term_IO = dasd_term_IO, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2395 | .handle_terminated_request = dasd_eckd_handle_terminated_request, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2396 | .format_device = dasd_eckd_format_device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2397 | .erp_action = dasd_eckd_erp_action, |
| 2398 | .erp_postaction = dasd_eckd_erp_postaction, |
Stefan Weinhuber | 8e09f21 | 2008-01-26 14:11:23 +0100 | [diff] [blame] | 2399 | .handle_unsolicited_interrupt = dasd_eckd_handle_unsolicited_interrupt, |
| 2400 | .build_cp = dasd_eckd_build_alias_cp, |
| 2401 | .free_cp = dasd_eckd_free_alias_cp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2402 | .dump_sense = dasd_eckd_dump_sense, |
| 2403 | .fill_info = dasd_eckd_fill_info, |
Christoph Hellwig | 1107ccf | 2006-03-24 03:15:20 -0800 | [diff] [blame] | 2404 | .ioctl = dasd_eckd_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2405 | }; |
| 2406 | |
| 2407 | static int __init |
| 2408 | dasd_eckd_init(void) |
| 2409 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2410 | ASCEBC(dasd_eckd_discipline.ebcname, 4); |
Horst Hummel | 4054557 | 2006-06-29 15:08:18 +0200 | [diff] [blame] | 2411 | return ccw_driver_register(&dasd_eckd_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2412 | } |
| 2413 | |
| 2414 | static void __exit |
| 2415 | dasd_eckd_cleanup(void) |
| 2416 | { |
| 2417 | ccw_driver_unregister(&dasd_eckd_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2418 | } |
| 2419 | |
| 2420 | module_init(dasd_eckd_init); |
| 2421 | module_exit(dasd_eckd_cleanup); |