11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * File...........: linux/drivers/s390/block/dasd_eckd.c 31da177e4SLinus Torvalds * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> 41da177e4SLinus Torvalds * Horst Hummel <Horst.Hummel@de.ibm.com> 51da177e4SLinus Torvalds * Carsten Otte <Cotte@de.ibm.com> 61da177e4SLinus Torvalds * Martin Schwidefsky <schwidefsky@de.ibm.com> 71da177e4SLinus Torvalds * Bugreports.to..: <Linux390@de.ibm.com> 81da177e4SLinus Torvalds * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 9ab1d848fSNigel Hislop * EMC Symmetrix ioctl Copyright EMC Corporation, 2008 10ab1d848fSNigel Hislop * Author.........: Nigel Hislop <hislop_nigel@emc.com> 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds */ 131da177e4SLinus Torvalds 14fc19f381SStefan Haberland #define KMSG_COMPONENT "dasd" 15fc19f381SStefan Haberland 161da177e4SLinus Torvalds #include <linux/stddef.h> 171da177e4SLinus Torvalds #include <linux/kernel.h> 181da177e4SLinus Torvalds #include <linux/slab.h> 191da177e4SLinus Torvalds #include <linux/hdreg.h> /* HDIO_GETGEO */ 201da177e4SLinus Torvalds #include <linux/bio.h> 211da177e4SLinus Torvalds #include <linux/module.h> 221da177e4SLinus Torvalds #include <linux/init.h> 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds #include <asm/debug.h> 251da177e4SLinus Torvalds #include <asm/idals.h> 261da177e4SLinus Torvalds #include <asm/ebcdic.h> 271da177e4SLinus Torvalds #include <asm/io.h> 281da177e4SLinus Torvalds #include <asm/todclk.h> 291da177e4SLinus Torvalds #include <asm/uaccess.h> 3040545573SHorst Hummel #include <asm/cio.h> 311da177e4SLinus Torvalds #include <asm/ccwdev.h> 32f3eb5384SStefan Weinhuber #include <asm/itcw.h> 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds #include "dasd_int.h" 351da177e4SLinus Torvalds #include "dasd_eckd.h" 36f3eb5384SStefan Weinhuber #include "../cio/chsc.h" 37f3eb5384SStefan Weinhuber 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds #ifdef PRINTK_HEADER 401da177e4SLinus Torvalds #undef PRINTK_HEADER 411da177e4SLinus Torvalds #endif /* PRINTK_HEADER */ 421da177e4SLinus Torvalds #define PRINTK_HEADER "dasd(eckd):" 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds #define ECKD_C0(i) (i->home_bytes) 451da177e4SLinus Torvalds #define ECKD_F(i) (i->formula) 461da177e4SLinus Torvalds #define ECKD_F1(i) (ECKD_F(i)==0x01?(i->factors.f_0x01.f1):\ 471da177e4SLinus Torvalds (i->factors.f_0x02.f1)) 481da177e4SLinus Torvalds #define ECKD_F2(i) (ECKD_F(i)==0x01?(i->factors.f_0x01.f2):\ 491da177e4SLinus Torvalds (i->factors.f_0x02.f2)) 501da177e4SLinus Torvalds #define ECKD_F3(i) (ECKD_F(i)==0x01?(i->factors.f_0x01.f3):\ 511da177e4SLinus Torvalds (i->factors.f_0x02.f3)) 521da177e4SLinus Torvalds #define ECKD_F4(i) (ECKD_F(i)==0x02?(i->factors.f_0x02.f4):0) 531da177e4SLinus Torvalds #define ECKD_F5(i) (ECKD_F(i)==0x02?(i->factors.f_0x02.f5):0) 541da177e4SLinus Torvalds #define ECKD_F6(i) (i->factor6) 551da177e4SLinus Torvalds #define ECKD_F7(i) (i->factor7) 561da177e4SLinus Torvalds #define ECKD_F8(i) (i->factor8) 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds static struct dasd_discipline dasd_eckd_discipline; 611da177e4SLinus Torvalds 621da177e4SLinus Torvalds /* The ccw bus type uses this table to find devices that it sends to 631da177e4SLinus Torvalds * dasd_eckd_probe */ 641da177e4SLinus Torvalds static struct ccw_device_id dasd_eckd_ids[] = { 65d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), .driver_info = 0x1}, 66d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), .driver_info = 0x2}, 67d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), .driver_info = 0x3}, 68d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), .driver_info = 0x4}, 69d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), .driver_info = 0x5}, 70d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), .driver_info = 0x6}, 71d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), .driver_info = 0x7}, 72d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), .driver_info = 0x8}, 73d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), .driver_info = 0x9}, 74d2c993d8SHeiko Carstens { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), .driver_info = 0xa}, 751da177e4SLinus Torvalds { /* end of list */ }, 761da177e4SLinus Torvalds }; 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds MODULE_DEVICE_TABLE(ccw, dasd_eckd_ids); 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds static struct ccw_driver dasd_eckd_driver; /* see below */ 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds /* initial attempt at a probe function. this can be simplified once 831da177e4SLinus Torvalds * the other detection code is gone */ 841da177e4SLinus Torvalds static int 851da177e4SLinus Torvalds dasd_eckd_probe (struct ccw_device *cdev) 861da177e4SLinus Torvalds { 871da177e4SLinus Torvalds int ret; 881da177e4SLinus Torvalds 8940545573SHorst Hummel /* set ECKD specific ccw-device options */ 9040545573SHorst Hummel ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE); 9140545573SHorst Hummel if (ret) { 92fc19f381SStefan Haberland DBF_EVENT(DBF_WARNING, 9340545573SHorst Hummel "dasd_eckd_probe: could not set ccw-device options " 942a0217d5SKay Sievers "for %s\n", dev_name(&cdev->dev)); 951da177e4SLinus Torvalds return ret; 9640545573SHorst Hummel } 9740545573SHorst Hummel ret = dasd_generic_probe(cdev, &dasd_eckd_discipline); 9840545573SHorst Hummel return ret; 991da177e4SLinus Torvalds } 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds static int 1021da177e4SLinus Torvalds dasd_eckd_set_online(struct ccw_device *cdev) 1031da177e4SLinus Torvalds { 1041da177e4SLinus Torvalds return dasd_generic_set_online(cdev, &dasd_eckd_discipline); 1051da177e4SLinus Torvalds } 1061da177e4SLinus Torvalds 1071da177e4SLinus Torvalds static struct ccw_driver dasd_eckd_driver = { 1081da177e4SLinus Torvalds .name = "dasd-eckd", 1091da177e4SLinus Torvalds .owner = THIS_MODULE, 1101da177e4SLinus Torvalds .ids = dasd_eckd_ids, 1111da177e4SLinus Torvalds .probe = dasd_eckd_probe, 1121da177e4SLinus Torvalds .remove = dasd_generic_remove, 1131da177e4SLinus Torvalds .set_offline = dasd_generic_set_offline, 1141da177e4SLinus Torvalds .set_online = dasd_eckd_set_online, 1151da177e4SLinus Torvalds .notify = dasd_generic_notify, 1161da177e4SLinus Torvalds }; 1171da177e4SLinus Torvalds 1181da177e4SLinus Torvalds static const int sizes_trk0[] = { 28, 148, 84 }; 1191da177e4SLinus Torvalds #define LABEL_SIZE 140 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds static inline unsigned int 1221da177e4SLinus Torvalds round_up_multiple(unsigned int no, unsigned int mult) 1231da177e4SLinus Torvalds { 1241da177e4SLinus Torvalds int rem = no % mult; 1251da177e4SLinus Torvalds return (rem ? no - rem + mult : no); 1261da177e4SLinus Torvalds } 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds static inline unsigned int 1291da177e4SLinus Torvalds ceil_quot(unsigned int d1, unsigned int d2) 1301da177e4SLinus Torvalds { 1311da177e4SLinus Torvalds return (d1 + (d2 - 1)) / d2; 1321da177e4SLinus Torvalds } 1331da177e4SLinus Torvalds 1344d284cacSHeiko Carstens static unsigned int 1351da177e4SLinus Torvalds recs_per_track(struct dasd_eckd_characteristics * rdc, 1361da177e4SLinus Torvalds unsigned int kl, unsigned int dl) 1371da177e4SLinus Torvalds { 1381da177e4SLinus Torvalds int dn, kn; 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds switch (rdc->dev_type) { 1411da177e4SLinus Torvalds case 0x3380: 1421da177e4SLinus Torvalds if (kl) 1431da177e4SLinus Torvalds return 1499 / (15 + 7 + ceil_quot(kl + 12, 32) + 1441da177e4SLinus Torvalds ceil_quot(dl + 12, 32)); 1451da177e4SLinus Torvalds else 1461da177e4SLinus Torvalds return 1499 / (15 + ceil_quot(dl + 12, 32)); 1471da177e4SLinus Torvalds case 0x3390: 1481da177e4SLinus Torvalds dn = ceil_quot(dl + 6, 232) + 1; 1491da177e4SLinus Torvalds if (kl) { 1501da177e4SLinus Torvalds kn = ceil_quot(kl + 6, 232) + 1; 1511da177e4SLinus Torvalds return 1729 / (10 + 9 + ceil_quot(kl + 6 * kn, 34) + 1521da177e4SLinus Torvalds 9 + ceil_quot(dl + 6 * dn, 34)); 1531da177e4SLinus Torvalds } else 1541da177e4SLinus Torvalds return 1729 / (10 + 9 + ceil_quot(dl + 6 * dn, 34)); 1551da177e4SLinus Torvalds case 0x9345: 1561da177e4SLinus Torvalds dn = ceil_quot(dl + 6, 232) + 1; 1571da177e4SLinus Torvalds if (kl) { 1581da177e4SLinus Torvalds kn = ceil_quot(kl + 6, 232) + 1; 1591da177e4SLinus Torvalds return 1420 / (18 + 7 + ceil_quot(kl + 6 * kn, 34) + 1601da177e4SLinus Torvalds ceil_quot(dl + 6 * dn, 34)); 1611da177e4SLinus Torvalds } else 1621da177e4SLinus Torvalds return 1420 / (18 + 7 + ceil_quot(dl + 6 * dn, 34)); 1631da177e4SLinus Torvalds } 1641da177e4SLinus Torvalds return 0; 1651da177e4SLinus Torvalds } 1661da177e4SLinus Torvalds 167b44b0ab3SStefan Weinhuber static void set_ch_t(struct ch_t *geo, __u32 cyl, __u8 head) 168b44b0ab3SStefan Weinhuber { 169b44b0ab3SStefan Weinhuber geo->cyl = (__u16) cyl; 170b44b0ab3SStefan Weinhuber geo->head = cyl >> 16; 171b44b0ab3SStefan Weinhuber geo->head <<= 4; 172b44b0ab3SStefan Weinhuber geo->head |= head; 173b44b0ab3SStefan Weinhuber } 174b44b0ab3SStefan Weinhuber 1754d284cacSHeiko Carstens static int 1761da177e4SLinus Torvalds check_XRC (struct ccw1 *de_ccw, 1771da177e4SLinus Torvalds struct DE_eckd_data *data, 1781da177e4SLinus Torvalds struct dasd_device *device) 1791da177e4SLinus Torvalds { 1801da177e4SLinus Torvalds struct dasd_eckd_private *private; 181d54853efSMartin Schwidefsky int rc; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 184d54853efSMartin Schwidefsky if (!private->rdc_data.facilities.XRC_supported) 185d54853efSMartin Schwidefsky return 0; 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds /* switch on System Time Stamp - needed for XRC Support */ 1881da177e4SLinus Torvalds data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid' */ 1891da177e4SLinus Torvalds data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */ 1901da177e4SLinus Torvalds 191d54853efSMartin Schwidefsky rc = get_sync_clock(&data->ep_sys_time); 192d54853efSMartin Schwidefsky /* Ignore return code if sync clock is switched off. */ 193d54853efSMartin Schwidefsky if (rc == -ENOSYS || rc == -EACCES) 194d54853efSMartin Schwidefsky rc = 0; 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds de_ccw->count = sizeof(struct DE_eckd_data); 1971da177e4SLinus Torvalds de_ccw->flags |= CCW_FLAG_SLI; 198d54853efSMartin Schwidefsky return rc; 1991da177e4SLinus Torvalds } 2001da177e4SLinus Torvalds 2014d284cacSHeiko Carstens static int 202b44b0ab3SStefan Weinhuber define_extent(struct ccw1 *ccw, struct DE_eckd_data *data, unsigned int trk, 203b44b0ab3SStefan Weinhuber unsigned int totrk, int cmd, struct dasd_device *device) 2041da177e4SLinus Torvalds { 2051da177e4SLinus Torvalds struct dasd_eckd_private *private; 206b44b0ab3SStefan Weinhuber u32 begcyl, endcyl; 207b44b0ab3SStefan Weinhuber u16 heads, beghead, endhead; 208d54853efSMartin Schwidefsky int rc = 0; 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_DEFINE_EXTENT; 2131da177e4SLinus Torvalds ccw->flags = 0; 2141da177e4SLinus Torvalds ccw->count = 16; 2151da177e4SLinus Torvalds ccw->cda = (__u32) __pa(data); 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds memset(data, 0, sizeof(struct DE_eckd_data)); 2181da177e4SLinus Torvalds switch (cmd) { 2191da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_HOME_ADDRESS: 2201da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_RECORD_ZERO: 2211da177e4SLinus Torvalds case DASD_ECKD_CCW_READ: 2221da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_MT: 2231da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_CKD: 2241da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_CKD_MT: 2251da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_KD: 2261da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_KD_MT: 2271da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_COUNT: 2281da177e4SLinus Torvalds data->mask.perm = 0x1; 2291da177e4SLinus Torvalds data->attributes.operation = private->attrib.operation; 2301da177e4SLinus Torvalds break; 2311da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE: 2321da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_MT: 2331da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_KD: 2341da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_KD_MT: 2351da177e4SLinus Torvalds data->mask.perm = 0x02; 2361da177e4SLinus Torvalds data->attributes.operation = private->attrib.operation; 237d54853efSMartin Schwidefsky rc = check_XRC (ccw, data, device); 2381da177e4SLinus Torvalds break; 2391da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_CKD: 2401da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_CKD_MT: 2411da177e4SLinus Torvalds data->attributes.operation = DASD_BYPASS_CACHE; 242d54853efSMartin Schwidefsky rc = check_XRC (ccw, data, device); 2431da177e4SLinus Torvalds break; 2441da177e4SLinus Torvalds case DASD_ECKD_CCW_ERASE: 2451da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_HOME_ADDRESS: 2461da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_RECORD_ZERO: 2471da177e4SLinus Torvalds data->mask.perm = 0x3; 2481da177e4SLinus Torvalds data->mask.auth = 0x1; 2491da177e4SLinus Torvalds data->attributes.operation = DASD_BYPASS_CACHE; 250d54853efSMartin Schwidefsky rc = check_XRC (ccw, data, device); 2511da177e4SLinus Torvalds break; 2521da177e4SLinus Torvalds default: 253fc19f381SStefan Haberland dev_err(&device->cdev->dev, 254fc19f381SStefan Haberland "0x%x is not a known command\n", cmd); 2551da177e4SLinus Torvalds break; 2561da177e4SLinus Torvalds } 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds data->attributes.mode = 0x3; /* ECKD */ 2591da177e4SLinus Torvalds 2601da177e4SLinus Torvalds if ((private->rdc_data.cu_type == 0x2105 || 2611da177e4SLinus Torvalds private->rdc_data.cu_type == 0x2107 || 2621da177e4SLinus Torvalds private->rdc_data.cu_type == 0x1750) 2631da177e4SLinus Torvalds && !(private->uses_cdl && trk < 2)) 2641da177e4SLinus Torvalds data->ga_extended |= 0x40; /* Regular Data Format Mode */ 2651da177e4SLinus Torvalds 266b44b0ab3SStefan Weinhuber heads = private->rdc_data.trk_per_cyl; 267b44b0ab3SStefan Weinhuber begcyl = trk / heads; 268b44b0ab3SStefan Weinhuber beghead = trk % heads; 269b44b0ab3SStefan Weinhuber endcyl = totrk / heads; 270b44b0ab3SStefan Weinhuber endhead = totrk % heads; 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds /* check for sequential prestage - enhance cylinder range */ 2731da177e4SLinus Torvalds if (data->attributes.operation == DASD_SEQ_PRESTAGE || 2741da177e4SLinus Torvalds data->attributes.operation == DASD_SEQ_ACCESS) { 2751da177e4SLinus Torvalds 276b44b0ab3SStefan Weinhuber if (endcyl + private->attrib.nr_cyl < private->real_cyl) 277b44b0ab3SStefan Weinhuber endcyl += private->attrib.nr_cyl; 2781da177e4SLinus Torvalds else 279b44b0ab3SStefan Weinhuber endcyl = (private->real_cyl - 1); 2801da177e4SLinus Torvalds } 2811da177e4SLinus Torvalds 282b44b0ab3SStefan Weinhuber set_ch_t(&data->beg_ext, begcyl, beghead); 283b44b0ab3SStefan Weinhuber set_ch_t(&data->end_ext, endcyl, endhead); 284d54853efSMartin Schwidefsky return rc; 2851da177e4SLinus Torvalds } 2861da177e4SLinus Torvalds 2878e09f215SStefan Weinhuber static int check_XRC_on_prefix(struct PFX_eckd_data *pfxdata, 2888e09f215SStefan Weinhuber struct dasd_device *device) 2898e09f215SStefan Weinhuber { 2908e09f215SStefan Weinhuber struct dasd_eckd_private *private; 2918e09f215SStefan Weinhuber int rc; 2928e09f215SStefan Weinhuber 2938e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) device->private; 2948e09f215SStefan Weinhuber if (!private->rdc_data.facilities.XRC_supported) 2958e09f215SStefan Weinhuber return 0; 2968e09f215SStefan Weinhuber 2978e09f215SStefan Weinhuber /* switch on System Time Stamp - needed for XRC Support */ 298f3eb5384SStefan Weinhuber pfxdata->define_extent.ga_extended |= 0x08; /* 'Time Stamp Valid' */ 299f3eb5384SStefan Weinhuber pfxdata->define_extent.ga_extended |= 0x02; /* 'Extended Parameter' */ 3008e09f215SStefan Weinhuber pfxdata->validity.time_stamp = 1; /* 'Time Stamp Valid' */ 3018e09f215SStefan Weinhuber 302f3eb5384SStefan Weinhuber rc = get_sync_clock(&pfxdata->define_extent.ep_sys_time); 3038e09f215SStefan Weinhuber /* Ignore return code if sync clock is switched off. */ 3048e09f215SStefan Weinhuber if (rc == -ENOSYS || rc == -EACCES) 3058e09f215SStefan Weinhuber rc = 0; 3068e09f215SStefan Weinhuber return rc; 3078e09f215SStefan Weinhuber } 3088e09f215SStefan Weinhuber 309f3eb5384SStefan Weinhuber static void fill_LRE_data(struct LRE_eckd_data *data, unsigned int trk, 310f3eb5384SStefan Weinhuber unsigned int rec_on_trk, int count, int cmd, 311f3eb5384SStefan Weinhuber struct dasd_device *device, unsigned int reclen, 312f3eb5384SStefan Weinhuber unsigned int tlf) 313f3eb5384SStefan Weinhuber { 314f3eb5384SStefan Weinhuber struct dasd_eckd_private *private; 315f3eb5384SStefan Weinhuber int sector; 316f3eb5384SStefan Weinhuber int dn, d; 317f3eb5384SStefan Weinhuber 318f3eb5384SStefan Weinhuber private = (struct dasd_eckd_private *) device->private; 319f3eb5384SStefan Weinhuber 320f3eb5384SStefan Weinhuber memset(data, 0, sizeof(*data)); 321f3eb5384SStefan Weinhuber sector = 0; 322f3eb5384SStefan Weinhuber if (rec_on_trk) { 323f3eb5384SStefan Weinhuber switch (private->rdc_data.dev_type) { 324f3eb5384SStefan Weinhuber case 0x3390: 325f3eb5384SStefan Weinhuber dn = ceil_quot(reclen + 6, 232); 326f3eb5384SStefan Weinhuber d = 9 + ceil_quot(reclen + 6 * (dn + 1), 34); 327f3eb5384SStefan Weinhuber sector = (49 + (rec_on_trk - 1) * (10 + d)) / 8; 328f3eb5384SStefan Weinhuber break; 329f3eb5384SStefan Weinhuber case 0x3380: 330f3eb5384SStefan Weinhuber d = 7 + ceil_quot(reclen + 12, 32); 331f3eb5384SStefan Weinhuber sector = (39 + (rec_on_trk - 1) * (8 + d)) / 7; 332f3eb5384SStefan Weinhuber break; 333f3eb5384SStefan Weinhuber } 334f3eb5384SStefan Weinhuber } 335f3eb5384SStefan Weinhuber data->sector = sector; 336f3eb5384SStefan Weinhuber /* note: meaning of count depends on the operation 337f3eb5384SStefan Weinhuber * for record based I/O it's the number of records, but for 338f3eb5384SStefan Weinhuber * track based I/O it's the number of tracks 339f3eb5384SStefan Weinhuber */ 340f3eb5384SStefan Weinhuber data->count = count; 341f3eb5384SStefan Weinhuber switch (cmd) { 342f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_HOME_ADDRESS: 343f3eb5384SStefan Weinhuber data->operation.orientation = 0x3; 344f3eb5384SStefan Weinhuber data->operation.operation = 0x03; 345f3eb5384SStefan Weinhuber break; 346f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_HOME_ADDRESS: 347f3eb5384SStefan Weinhuber data->operation.orientation = 0x3; 348f3eb5384SStefan Weinhuber data->operation.operation = 0x16; 349f3eb5384SStefan Weinhuber break; 350f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_RECORD_ZERO: 351f3eb5384SStefan Weinhuber data->operation.orientation = 0x1; 352f3eb5384SStefan Weinhuber data->operation.operation = 0x03; 353f3eb5384SStefan Weinhuber data->count++; 354f3eb5384SStefan Weinhuber break; 355f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_RECORD_ZERO: 356f3eb5384SStefan Weinhuber data->operation.orientation = 0x3; 357f3eb5384SStefan Weinhuber data->operation.operation = 0x16; 358f3eb5384SStefan Weinhuber data->count++; 359f3eb5384SStefan Weinhuber break; 360f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE: 361f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_MT: 362f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_KD: 363f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_KD_MT: 364f3eb5384SStefan Weinhuber data->auxiliary.length_valid = 0x1; 365f3eb5384SStefan Weinhuber data->length = reclen; 366f3eb5384SStefan Weinhuber data->operation.operation = 0x01; 367f3eb5384SStefan Weinhuber break; 368f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_CKD: 369f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_CKD_MT: 370f3eb5384SStefan Weinhuber data->auxiliary.length_valid = 0x1; 371f3eb5384SStefan Weinhuber data->length = reclen; 372f3eb5384SStefan Weinhuber data->operation.operation = 0x03; 373f3eb5384SStefan Weinhuber break; 374f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_TRACK_DATA: 375f3eb5384SStefan Weinhuber data->auxiliary.length_valid = 0x1; 376f3eb5384SStefan Weinhuber data->length = reclen; /* not tlf, as one might think */ 377f3eb5384SStefan Weinhuber data->operation.operation = 0x3F; 378f3eb5384SStefan Weinhuber data->extended_operation = 0x23; 379f3eb5384SStefan Weinhuber break; 380f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ: 381f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_MT: 382f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_KD: 383f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_KD_MT: 384f3eb5384SStefan Weinhuber data->auxiliary.length_valid = 0x1; 385f3eb5384SStefan Weinhuber data->length = reclen; 386f3eb5384SStefan Weinhuber data->operation.operation = 0x06; 387f3eb5384SStefan Weinhuber break; 388f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_CKD: 389f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_CKD_MT: 390f3eb5384SStefan Weinhuber data->auxiliary.length_valid = 0x1; 391f3eb5384SStefan Weinhuber data->length = reclen; 392f3eb5384SStefan Weinhuber data->operation.operation = 0x16; 393f3eb5384SStefan Weinhuber break; 394f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_COUNT: 395f3eb5384SStefan Weinhuber data->operation.operation = 0x06; 396f3eb5384SStefan Weinhuber break; 397f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_TRACK_DATA: 398f3eb5384SStefan Weinhuber data->auxiliary.length_valid = 0x1; 399f3eb5384SStefan Weinhuber data->length = tlf; 400f3eb5384SStefan Weinhuber data->operation.operation = 0x0C; 401f3eb5384SStefan Weinhuber break; 402f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_ERASE: 403f3eb5384SStefan Weinhuber data->length = reclen; 404f3eb5384SStefan Weinhuber data->auxiliary.length_valid = 0x1; 405f3eb5384SStefan Weinhuber data->operation.operation = 0x0b; 406f3eb5384SStefan Weinhuber break; 407f3eb5384SStefan Weinhuber default: 408f3eb5384SStefan Weinhuber DBF_DEV_EVENT(DBF_ERR, device, 409f3eb5384SStefan Weinhuber "fill LRE unknown opcode 0x%x", cmd); 410f3eb5384SStefan Weinhuber BUG(); 411f3eb5384SStefan Weinhuber } 412f3eb5384SStefan Weinhuber set_ch_t(&data->seek_addr, 413f3eb5384SStefan Weinhuber trk / private->rdc_data.trk_per_cyl, 414f3eb5384SStefan Weinhuber trk % private->rdc_data.trk_per_cyl); 415f3eb5384SStefan Weinhuber data->search_arg.cyl = data->seek_addr.cyl; 416f3eb5384SStefan Weinhuber data->search_arg.head = data->seek_addr.head; 417f3eb5384SStefan Weinhuber data->search_arg.record = rec_on_trk; 418f3eb5384SStefan Weinhuber } 419f3eb5384SStefan Weinhuber 420f3eb5384SStefan Weinhuber static int prefix_LRE(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, 421b44b0ab3SStefan Weinhuber unsigned int trk, unsigned int totrk, int cmd, 422f3eb5384SStefan Weinhuber struct dasd_device *basedev, struct dasd_device *startdev, 423f3eb5384SStefan Weinhuber unsigned char format, unsigned int rec_on_trk, int count, 424f3eb5384SStefan Weinhuber unsigned int blksize, unsigned int tlf) 4258e09f215SStefan Weinhuber { 4268e09f215SStefan Weinhuber struct dasd_eckd_private *basepriv, *startpriv; 427f3eb5384SStefan Weinhuber struct DE_eckd_data *dedata; 428f3eb5384SStefan Weinhuber struct LRE_eckd_data *lredata; 429b44b0ab3SStefan Weinhuber u32 begcyl, endcyl; 430b44b0ab3SStefan Weinhuber u16 heads, beghead, endhead; 4318e09f215SStefan Weinhuber int rc = 0; 4328e09f215SStefan Weinhuber 4338e09f215SStefan Weinhuber basepriv = (struct dasd_eckd_private *) basedev->private; 4348e09f215SStefan Weinhuber startpriv = (struct dasd_eckd_private *) startdev->private; 435f3eb5384SStefan Weinhuber dedata = &pfxdata->define_extent; 436f3eb5384SStefan Weinhuber lredata = &pfxdata->locate_record; 4378e09f215SStefan Weinhuber 4388e09f215SStefan Weinhuber ccw->cmd_code = DASD_ECKD_CCW_PFX; 4398e09f215SStefan Weinhuber ccw->flags = 0; 4408e09f215SStefan Weinhuber ccw->count = sizeof(*pfxdata); 4418e09f215SStefan Weinhuber ccw->cda = (__u32) __pa(pfxdata); 4428e09f215SStefan Weinhuber 4438e09f215SStefan Weinhuber memset(pfxdata, 0, sizeof(*pfxdata)); 4448e09f215SStefan Weinhuber /* prefix data */ 445f3eb5384SStefan Weinhuber if (format > 1) { 446f3eb5384SStefan Weinhuber DBF_DEV_EVENT(DBF_ERR, basedev, 447f3eb5384SStefan Weinhuber "PFX LRE unknown format 0x%x", format); 448f3eb5384SStefan Weinhuber BUG(); 449f3eb5384SStefan Weinhuber return -EINVAL; 450f3eb5384SStefan Weinhuber } 451f3eb5384SStefan Weinhuber pfxdata->format = format; 4524abb08c2SStefan Weinhuber pfxdata->base_address = basepriv->ned->unit_addr; 4534abb08c2SStefan Weinhuber pfxdata->base_lss = basepriv->ned->ID; 454f3eb5384SStefan Weinhuber pfxdata->validity.define_extent = 1; 4558e09f215SStefan Weinhuber 4568e09f215SStefan Weinhuber /* private uid is kept up to date, conf_data may be outdated */ 4578e09f215SStefan Weinhuber if (startpriv->uid.type != UA_BASE_DEVICE) { 4588e09f215SStefan Weinhuber pfxdata->validity.verify_base = 1; 4598e09f215SStefan Weinhuber if (startpriv->uid.type == UA_HYPER_PAV_ALIAS) 4608e09f215SStefan Weinhuber pfxdata->validity.hyper_pav = 1; 4618e09f215SStefan Weinhuber } 4628e09f215SStefan Weinhuber 4638e09f215SStefan Weinhuber /* define extend data (mostly)*/ 4648e09f215SStefan Weinhuber switch (cmd) { 4658e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_HOME_ADDRESS: 4668e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_RECORD_ZERO: 4678e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ: 4688e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_MT: 4698e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_CKD: 4708e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_CKD_MT: 4718e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_KD: 4728e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_KD_MT: 4738e09f215SStefan Weinhuber case DASD_ECKD_CCW_READ_COUNT: 474f3eb5384SStefan Weinhuber dedata->mask.perm = 0x1; 475f3eb5384SStefan Weinhuber dedata->attributes.operation = basepriv->attrib.operation; 476f3eb5384SStefan Weinhuber break; 477f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_TRACK_DATA: 478f3eb5384SStefan Weinhuber dedata->mask.perm = 0x1; 479f3eb5384SStefan Weinhuber dedata->attributes.operation = basepriv->attrib.operation; 480f3eb5384SStefan Weinhuber dedata->blk_size = 0; 4818e09f215SStefan Weinhuber break; 4828e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE: 4838e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE_MT: 4848e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE_KD: 4858e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE_KD_MT: 486f3eb5384SStefan Weinhuber dedata->mask.perm = 0x02; 487f3eb5384SStefan Weinhuber dedata->attributes.operation = basepriv->attrib.operation; 4888e09f215SStefan Weinhuber rc = check_XRC_on_prefix(pfxdata, basedev); 4898e09f215SStefan Weinhuber break; 4908e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE_CKD: 4918e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE_CKD_MT: 492f3eb5384SStefan Weinhuber dedata->attributes.operation = DASD_BYPASS_CACHE; 4938e09f215SStefan Weinhuber rc = check_XRC_on_prefix(pfxdata, basedev); 4948e09f215SStefan Weinhuber break; 4958e09f215SStefan Weinhuber case DASD_ECKD_CCW_ERASE: 4968e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE_HOME_ADDRESS: 4978e09f215SStefan Weinhuber case DASD_ECKD_CCW_WRITE_RECORD_ZERO: 498f3eb5384SStefan Weinhuber dedata->mask.perm = 0x3; 499f3eb5384SStefan Weinhuber dedata->mask.auth = 0x1; 500f3eb5384SStefan Weinhuber dedata->attributes.operation = DASD_BYPASS_CACHE; 501f3eb5384SStefan Weinhuber rc = check_XRC_on_prefix(pfxdata, basedev); 502f3eb5384SStefan Weinhuber break; 503f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_TRACK_DATA: 504f3eb5384SStefan Weinhuber dedata->mask.perm = 0x02; 505f3eb5384SStefan Weinhuber dedata->attributes.operation = basepriv->attrib.operation; 506f3eb5384SStefan Weinhuber dedata->blk_size = blksize; 5078e09f215SStefan Weinhuber rc = check_XRC_on_prefix(pfxdata, basedev); 5088e09f215SStefan Weinhuber break; 5098e09f215SStefan Weinhuber default: 510f3eb5384SStefan Weinhuber DBF_DEV_EVENT(DBF_ERR, basedev, 511f3eb5384SStefan Weinhuber "PFX LRE unknown opcode 0x%x", cmd); 512f3eb5384SStefan Weinhuber BUG(); 513f3eb5384SStefan Weinhuber return -EINVAL; 5148e09f215SStefan Weinhuber } 5158e09f215SStefan Weinhuber 516f3eb5384SStefan Weinhuber dedata->attributes.mode = 0x3; /* ECKD */ 5178e09f215SStefan Weinhuber 5188e09f215SStefan Weinhuber if ((basepriv->rdc_data.cu_type == 0x2105 || 5198e09f215SStefan Weinhuber basepriv->rdc_data.cu_type == 0x2107 || 5208e09f215SStefan Weinhuber basepriv->rdc_data.cu_type == 0x1750) 5218e09f215SStefan Weinhuber && !(basepriv->uses_cdl && trk < 2)) 522f3eb5384SStefan Weinhuber dedata->ga_extended |= 0x40; /* Regular Data Format Mode */ 5238e09f215SStefan Weinhuber 524b44b0ab3SStefan Weinhuber heads = basepriv->rdc_data.trk_per_cyl; 525b44b0ab3SStefan Weinhuber begcyl = trk / heads; 526b44b0ab3SStefan Weinhuber beghead = trk % heads; 527b44b0ab3SStefan Weinhuber endcyl = totrk / heads; 528b44b0ab3SStefan Weinhuber endhead = totrk % heads; 5298e09f215SStefan Weinhuber 5308e09f215SStefan Weinhuber /* check for sequential prestage - enhance cylinder range */ 531f3eb5384SStefan Weinhuber if (dedata->attributes.operation == DASD_SEQ_PRESTAGE || 532f3eb5384SStefan Weinhuber dedata->attributes.operation == DASD_SEQ_ACCESS) { 5338e09f215SStefan Weinhuber 534b44b0ab3SStefan Weinhuber if (endcyl + basepriv->attrib.nr_cyl < basepriv->real_cyl) 535b44b0ab3SStefan Weinhuber endcyl += basepriv->attrib.nr_cyl; 5368e09f215SStefan Weinhuber else 537b44b0ab3SStefan Weinhuber endcyl = (basepriv->real_cyl - 1); 5388e09f215SStefan Weinhuber } 5398e09f215SStefan Weinhuber 540f3eb5384SStefan Weinhuber set_ch_t(&dedata->beg_ext, begcyl, beghead); 541f3eb5384SStefan Weinhuber set_ch_t(&dedata->end_ext, endcyl, endhead); 542f3eb5384SStefan Weinhuber 543f3eb5384SStefan Weinhuber if (format == 1) { 544f3eb5384SStefan Weinhuber fill_LRE_data(lredata, trk, rec_on_trk, count, cmd, 545f3eb5384SStefan Weinhuber basedev, blksize, tlf); 546f3eb5384SStefan Weinhuber } 547f3eb5384SStefan Weinhuber 5488e09f215SStefan Weinhuber return rc; 5498e09f215SStefan Weinhuber } 5508e09f215SStefan Weinhuber 551f3eb5384SStefan Weinhuber static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata, 552f3eb5384SStefan Weinhuber unsigned int trk, unsigned int totrk, int cmd, 553f3eb5384SStefan Weinhuber struct dasd_device *basedev, struct dasd_device *startdev) 554f3eb5384SStefan Weinhuber { 555f3eb5384SStefan Weinhuber return prefix_LRE(ccw, pfxdata, trk, totrk, cmd, basedev, startdev, 556f3eb5384SStefan Weinhuber 0, 0, 0, 0, 0); 557f3eb5384SStefan Weinhuber } 558f3eb5384SStefan Weinhuber 5594d284cacSHeiko Carstens static void 560b44b0ab3SStefan Weinhuber locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, unsigned int trk, 561b44b0ab3SStefan Weinhuber unsigned int rec_on_trk, int no_rec, int cmd, 5621da177e4SLinus Torvalds struct dasd_device * device, int reclen) 5631da177e4SLinus Torvalds { 5641da177e4SLinus Torvalds struct dasd_eckd_private *private; 5651da177e4SLinus Torvalds int sector; 5661da177e4SLinus Torvalds int dn, d; 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 5691da177e4SLinus Torvalds 5701da177e4SLinus Torvalds DBF_DEV_EVENT(DBF_INFO, device, 5711da177e4SLinus Torvalds "Locate: trk %d, rec %d, no_rec %d, cmd %d, reclen %d", 5721da177e4SLinus Torvalds trk, rec_on_trk, no_rec, cmd, reclen); 5731da177e4SLinus Torvalds 5741da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_LOCATE_RECORD; 5751da177e4SLinus Torvalds ccw->flags = 0; 5761da177e4SLinus Torvalds ccw->count = 16; 5771da177e4SLinus Torvalds ccw->cda = (__u32) __pa(data); 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds memset(data, 0, sizeof(struct LO_eckd_data)); 5801da177e4SLinus Torvalds sector = 0; 5811da177e4SLinus Torvalds if (rec_on_trk) { 5821da177e4SLinus Torvalds switch (private->rdc_data.dev_type) { 5831da177e4SLinus Torvalds case 0x3390: 5841da177e4SLinus Torvalds dn = ceil_quot(reclen + 6, 232); 5851da177e4SLinus Torvalds d = 9 + ceil_quot(reclen + 6 * (dn + 1), 34); 5861da177e4SLinus Torvalds sector = (49 + (rec_on_trk - 1) * (10 + d)) / 8; 5871da177e4SLinus Torvalds break; 5881da177e4SLinus Torvalds case 0x3380: 5891da177e4SLinus Torvalds d = 7 + ceil_quot(reclen + 12, 32); 5901da177e4SLinus Torvalds sector = (39 + (rec_on_trk - 1) * (8 + d)) / 7; 5911da177e4SLinus Torvalds break; 5921da177e4SLinus Torvalds } 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds data->sector = sector; 5951da177e4SLinus Torvalds data->count = no_rec; 5961da177e4SLinus Torvalds switch (cmd) { 5971da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_HOME_ADDRESS: 5981da177e4SLinus Torvalds data->operation.orientation = 0x3; 5991da177e4SLinus Torvalds data->operation.operation = 0x03; 6001da177e4SLinus Torvalds break; 6011da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_HOME_ADDRESS: 6021da177e4SLinus Torvalds data->operation.orientation = 0x3; 6031da177e4SLinus Torvalds data->operation.operation = 0x16; 6041da177e4SLinus Torvalds break; 6051da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_RECORD_ZERO: 6061da177e4SLinus Torvalds data->operation.orientation = 0x1; 6071da177e4SLinus Torvalds data->operation.operation = 0x03; 6081da177e4SLinus Torvalds data->count++; 6091da177e4SLinus Torvalds break; 6101da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_RECORD_ZERO: 6111da177e4SLinus Torvalds data->operation.orientation = 0x3; 6121da177e4SLinus Torvalds data->operation.operation = 0x16; 6131da177e4SLinus Torvalds data->count++; 6141da177e4SLinus Torvalds break; 6151da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE: 6161da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_MT: 6171da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_KD: 6181da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_KD_MT: 6191da177e4SLinus Torvalds data->auxiliary.last_bytes_used = 0x1; 6201da177e4SLinus Torvalds data->length = reclen; 6211da177e4SLinus Torvalds data->operation.operation = 0x01; 6221da177e4SLinus Torvalds break; 6231da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_CKD: 6241da177e4SLinus Torvalds case DASD_ECKD_CCW_WRITE_CKD_MT: 6251da177e4SLinus Torvalds data->auxiliary.last_bytes_used = 0x1; 6261da177e4SLinus Torvalds data->length = reclen; 6271da177e4SLinus Torvalds data->operation.operation = 0x03; 6281da177e4SLinus Torvalds break; 6291da177e4SLinus Torvalds case DASD_ECKD_CCW_READ: 6301da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_MT: 6311da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_KD: 6321da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_KD_MT: 6331da177e4SLinus Torvalds data->auxiliary.last_bytes_used = 0x1; 6341da177e4SLinus Torvalds data->length = reclen; 6351da177e4SLinus Torvalds data->operation.operation = 0x06; 6361da177e4SLinus Torvalds break; 6371da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_CKD: 6381da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_CKD_MT: 6391da177e4SLinus Torvalds data->auxiliary.last_bytes_used = 0x1; 6401da177e4SLinus Torvalds data->length = reclen; 6411da177e4SLinus Torvalds data->operation.operation = 0x16; 6421da177e4SLinus Torvalds break; 6431da177e4SLinus Torvalds case DASD_ECKD_CCW_READ_COUNT: 6441da177e4SLinus Torvalds data->operation.operation = 0x06; 6451da177e4SLinus Torvalds break; 6461da177e4SLinus Torvalds case DASD_ECKD_CCW_ERASE: 6471da177e4SLinus Torvalds data->length = reclen; 6481da177e4SLinus Torvalds data->auxiliary.last_bytes_used = 0x1; 6491da177e4SLinus Torvalds data->operation.operation = 0x0b; 6501da177e4SLinus Torvalds break; 6511da177e4SLinus Torvalds default: 652fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_ERR, device, "unknown locate record " 653fc19f381SStefan Haberland "opcode 0x%x", cmd); 6541da177e4SLinus Torvalds } 655b44b0ab3SStefan Weinhuber set_ch_t(&data->seek_addr, 656b44b0ab3SStefan Weinhuber trk / private->rdc_data.trk_per_cyl, 657b44b0ab3SStefan Weinhuber trk % private->rdc_data.trk_per_cyl); 658b44b0ab3SStefan Weinhuber data->search_arg.cyl = data->seek_addr.cyl; 659b44b0ab3SStefan Weinhuber data->search_arg.head = data->seek_addr.head; 6601da177e4SLinus Torvalds data->search_arg.record = rec_on_trk; 6611da177e4SLinus Torvalds } 6621da177e4SLinus Torvalds 6631da177e4SLinus Torvalds /* 6641da177e4SLinus Torvalds * Returns 1 if the block is one of the special blocks that needs 6651da177e4SLinus Torvalds * to get read/written with the KD variant of the command. 6661da177e4SLinus Torvalds * That is DASD_ECKD_READ_KD_MT instead of DASD_ECKD_READ_MT and 6671da177e4SLinus Torvalds * DASD_ECKD_WRITE_KD_MT instead of DASD_ECKD_WRITE_MT. 6681da177e4SLinus Torvalds * Luckily the KD variants differ only by one bit (0x08) from the 6691da177e4SLinus Torvalds * normal variant. So don't wonder about code like: 6701da177e4SLinus Torvalds * if (dasd_eckd_cdl_special(blk_per_trk, recid)) 6711da177e4SLinus Torvalds * ccw->cmd_code |= 0x8; 6721da177e4SLinus Torvalds */ 6731da177e4SLinus Torvalds static inline int 6741da177e4SLinus Torvalds dasd_eckd_cdl_special(int blk_per_trk, int recid) 6751da177e4SLinus Torvalds { 6761da177e4SLinus Torvalds if (recid < 3) 6771da177e4SLinus Torvalds return 1; 6781da177e4SLinus Torvalds if (recid < blk_per_trk) 6791da177e4SLinus Torvalds return 0; 6801da177e4SLinus Torvalds if (recid < 2 * blk_per_trk) 6811da177e4SLinus Torvalds return 1; 6821da177e4SLinus Torvalds return 0; 6831da177e4SLinus Torvalds } 6841da177e4SLinus Torvalds 6851da177e4SLinus Torvalds /* 6861da177e4SLinus Torvalds * Returns the record size for the special blocks of the cdl format. 6871da177e4SLinus Torvalds * Only returns something useful if dasd_eckd_cdl_special is true 6881da177e4SLinus Torvalds * for the recid. 6891da177e4SLinus Torvalds */ 6901da177e4SLinus Torvalds static inline int 6911da177e4SLinus Torvalds dasd_eckd_cdl_reclen(int recid) 6921da177e4SLinus Torvalds { 6931da177e4SLinus Torvalds if (recid < 3) 6941da177e4SLinus Torvalds return sizes_trk0[recid]; 6951da177e4SLinus Torvalds return LABEL_SIZE; 6961da177e4SLinus Torvalds } 6971da177e4SLinus Torvalds 6983d052595SHorst Hummel /* 6993d052595SHorst Hummel * Generate device unique id that specifies the physical device. 7003d052595SHorst Hummel */ 7014abb08c2SStefan Weinhuber static int dasd_eckd_generate_uid(struct dasd_device *device, 7024abb08c2SStefan Weinhuber struct dasd_uid *uid) 7033d052595SHorst Hummel { 7043d052595SHorst Hummel struct dasd_eckd_private *private; 7054abb08c2SStefan Weinhuber int count; 7063d052595SHorst Hummel 7073d052595SHorst Hummel private = (struct dasd_eckd_private *) device->private; 7083d052595SHorst Hummel if (!private) 7093d052595SHorst Hummel return -ENODEV; 7104abb08c2SStefan Weinhuber if (!private->ned || !private->gneq) 7113d052595SHorst Hummel return -ENODEV; 7123d052595SHorst Hummel 7133d052595SHorst Hummel memset(uid, 0, sizeof(struct dasd_uid)); 7144abb08c2SStefan Weinhuber memcpy(uid->vendor, private->ned->HDA_manufacturer, 7153d052595SHorst Hummel sizeof(uid->vendor) - 1); 7163d052595SHorst Hummel EBCASC(uid->vendor, sizeof(uid->vendor) - 1); 7174abb08c2SStefan Weinhuber memcpy(uid->serial, private->ned->HDA_location, 7183d052595SHorst Hummel sizeof(uid->serial) - 1); 7193d052595SHorst Hummel EBCASC(uid->serial, sizeof(uid->serial) - 1); 7204abb08c2SStefan Weinhuber uid->ssid = private->gneq->subsystemID; 7214abb08c2SStefan Weinhuber uid->real_unit_addr = private->ned->unit_addr;; 7224abb08c2SStefan Weinhuber if (private->sneq) { 7234abb08c2SStefan Weinhuber uid->type = private->sneq->sua_flags; 7248e09f215SStefan Weinhuber if (uid->type == UA_BASE_PAV_ALIAS) 7254abb08c2SStefan Weinhuber uid->base_unit_addr = private->sneq->base_unit_addr; 7268e09f215SStefan Weinhuber } else { 7278e09f215SStefan Weinhuber uid->type = UA_BASE_DEVICE; 7288e09f215SStefan Weinhuber } 7294abb08c2SStefan Weinhuber if (private->vdsneq) { 7304abb08c2SStefan Weinhuber for (count = 0; count < 16; count++) { 7314abb08c2SStefan Weinhuber sprintf(uid->vduit+2*count, "%02x", 7324abb08c2SStefan Weinhuber private->vdsneq->uit[count]); 7334abb08c2SStefan Weinhuber } 7344abb08c2SStefan Weinhuber } 7353d052595SHorst Hummel return 0; 7363d052595SHorst Hummel } 7373d052595SHorst Hummel 738763968e2SHeiko Carstens static struct dasd_ccw_req *dasd_eckd_build_rcd_lpm(struct dasd_device *device, 73917283b56SCornelia Huck void *rcd_buffer, 74017283b56SCornelia Huck struct ciw *ciw, __u8 lpm) 74117283b56SCornelia Huck { 74217283b56SCornelia Huck struct dasd_ccw_req *cqr; 74317283b56SCornelia Huck struct ccw1 *ccw; 74417283b56SCornelia Huck 74517283b56SCornelia Huck cqr = dasd_smalloc_request("ECKD", 1 /* RCD */, ciw->count, device); 74617283b56SCornelia Huck 74717283b56SCornelia Huck if (IS_ERR(cqr)) { 748fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 74917283b56SCornelia Huck "Could not allocate RCD request"); 75017283b56SCornelia Huck return cqr; 75117283b56SCornelia Huck } 75217283b56SCornelia Huck 75317283b56SCornelia Huck ccw = cqr->cpaddr; 75417283b56SCornelia Huck ccw->cmd_code = ciw->cmd; 75517283b56SCornelia Huck ccw->cda = (__u32)(addr_t)rcd_buffer; 75617283b56SCornelia Huck ccw->count = ciw->count; 75717283b56SCornelia Huck 7588e09f215SStefan Weinhuber cqr->startdev = device; 7598e09f215SStefan Weinhuber cqr->memdev = device; 7608e09f215SStefan Weinhuber cqr->block = NULL; 76117283b56SCornelia Huck cqr->expires = 10*HZ; 76217283b56SCornelia Huck cqr->lpm = lpm; 76317283b56SCornelia Huck clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); 76417283b56SCornelia Huck cqr->retries = 2; 76517283b56SCornelia Huck cqr->buildclk = get_clock(); 76617283b56SCornelia Huck cqr->status = DASD_CQR_FILLED; 76717283b56SCornelia Huck return cqr; 76817283b56SCornelia Huck } 76917283b56SCornelia Huck 77017283b56SCornelia Huck static int dasd_eckd_read_conf_lpm(struct dasd_device *device, 77117283b56SCornelia Huck void **rcd_buffer, 77217283b56SCornelia Huck int *rcd_buffer_size, __u8 lpm) 77317283b56SCornelia Huck { 77417283b56SCornelia Huck struct ciw *ciw; 77517283b56SCornelia Huck char *rcd_buf = NULL; 77617283b56SCornelia Huck int ret; 77717283b56SCornelia Huck struct dasd_ccw_req *cqr; 77817283b56SCornelia Huck 77917283b56SCornelia Huck /* 78017283b56SCornelia Huck * scan for RCD command in extended SenseID data 78117283b56SCornelia Huck */ 78217283b56SCornelia Huck ciw = ccw_device_get_ciw(device->cdev, CIW_TYPE_RCD); 78317283b56SCornelia Huck if (!ciw || ciw->cmd == 0) { 78417283b56SCornelia Huck ret = -EOPNOTSUPP; 78517283b56SCornelia Huck goto out_error; 78617283b56SCornelia Huck } 78717283b56SCornelia Huck rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); 78817283b56SCornelia Huck if (!rcd_buf) { 78917283b56SCornelia Huck ret = -ENOMEM; 79017283b56SCornelia Huck goto out_error; 79117283b56SCornelia Huck } 7924abb08c2SStefan Weinhuber 7934abb08c2SStefan Weinhuber /* 7944abb08c2SStefan Weinhuber * buffer has to start with EBCDIC "V1.0" to show 7954abb08c2SStefan Weinhuber * support for virtual device SNEQ 7964abb08c2SStefan Weinhuber */ 7974abb08c2SStefan Weinhuber rcd_buf[0] = 0xE5; 7984abb08c2SStefan Weinhuber rcd_buf[1] = 0xF1; 7994abb08c2SStefan Weinhuber rcd_buf[2] = 0x4B; 8004abb08c2SStefan Weinhuber rcd_buf[3] = 0xF0; 80117283b56SCornelia Huck cqr = dasd_eckd_build_rcd_lpm(device, rcd_buf, ciw, lpm); 80217283b56SCornelia Huck if (IS_ERR(cqr)) { 80317283b56SCornelia Huck ret = PTR_ERR(cqr); 80417283b56SCornelia Huck goto out_error; 80517283b56SCornelia Huck } 80617283b56SCornelia Huck ret = dasd_sleep_on(cqr); 80717283b56SCornelia Huck /* 80817283b56SCornelia Huck * on success we update the user input parms 80917283b56SCornelia Huck */ 8108e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 81117283b56SCornelia Huck if (ret) 81217283b56SCornelia Huck goto out_error; 81317283b56SCornelia Huck 81417283b56SCornelia Huck *rcd_buffer_size = ciw->count; 81517283b56SCornelia Huck *rcd_buffer = rcd_buf; 81617283b56SCornelia Huck return 0; 81717283b56SCornelia Huck out_error: 81817283b56SCornelia Huck kfree(rcd_buf); 81917283b56SCornelia Huck *rcd_buffer = NULL; 82017283b56SCornelia Huck *rcd_buffer_size = 0; 82117283b56SCornelia Huck return ret; 82217283b56SCornelia Huck } 82317283b56SCornelia Huck 8244abb08c2SStefan Weinhuber static int dasd_eckd_identify_conf_parts(struct dasd_eckd_private *private) 8254abb08c2SStefan Weinhuber { 8264abb08c2SStefan Weinhuber 8274abb08c2SStefan Weinhuber struct dasd_sneq *sneq; 8284abb08c2SStefan Weinhuber int i, count; 8294abb08c2SStefan Weinhuber 8304abb08c2SStefan Weinhuber private->ned = NULL; 8314abb08c2SStefan Weinhuber private->sneq = NULL; 8324abb08c2SStefan Weinhuber private->vdsneq = NULL; 8334abb08c2SStefan Weinhuber private->gneq = NULL; 8344abb08c2SStefan Weinhuber count = private->conf_len / sizeof(struct dasd_sneq); 8354abb08c2SStefan Weinhuber sneq = (struct dasd_sneq *)private->conf_data; 8364abb08c2SStefan Weinhuber for (i = 0; i < count; ++i) { 8374abb08c2SStefan Weinhuber if (sneq->flags.identifier == 1 && sneq->format == 1) 8384abb08c2SStefan Weinhuber private->sneq = sneq; 8394abb08c2SStefan Weinhuber else if (sneq->flags.identifier == 1 && sneq->format == 4) 8404abb08c2SStefan Weinhuber private->vdsneq = (struct vd_sneq *)sneq; 8414abb08c2SStefan Weinhuber else if (sneq->flags.identifier == 2) 8424abb08c2SStefan Weinhuber private->gneq = (struct dasd_gneq *)sneq; 8434abb08c2SStefan Weinhuber else if (sneq->flags.identifier == 3 && sneq->res1 == 1) 8444abb08c2SStefan Weinhuber private->ned = (struct dasd_ned *)sneq; 8454abb08c2SStefan Weinhuber sneq++; 8464abb08c2SStefan Weinhuber } 8474abb08c2SStefan Weinhuber if (!private->ned || !private->gneq) { 8484abb08c2SStefan Weinhuber private->ned = NULL; 8494abb08c2SStefan Weinhuber private->sneq = NULL; 8504abb08c2SStefan Weinhuber private->vdsneq = NULL; 8514abb08c2SStefan Weinhuber private->gneq = NULL; 8524abb08c2SStefan Weinhuber return -EINVAL; 8534abb08c2SStefan Weinhuber } 8544abb08c2SStefan Weinhuber return 0; 8554abb08c2SStefan Weinhuber 8564abb08c2SStefan Weinhuber }; 8574abb08c2SStefan Weinhuber 8584abb08c2SStefan Weinhuber static unsigned char dasd_eckd_path_access(void *conf_data, int conf_len) 8594abb08c2SStefan Weinhuber { 8604abb08c2SStefan Weinhuber struct dasd_gneq *gneq; 8614abb08c2SStefan Weinhuber int i, count, found; 8624abb08c2SStefan Weinhuber 8634abb08c2SStefan Weinhuber count = conf_len / sizeof(*gneq); 8644abb08c2SStefan Weinhuber gneq = (struct dasd_gneq *)conf_data; 8654abb08c2SStefan Weinhuber found = 0; 8664abb08c2SStefan Weinhuber for (i = 0; i < count; ++i) { 8674abb08c2SStefan Weinhuber if (gneq->flags.identifier == 2) { 8684abb08c2SStefan Weinhuber found = 1; 8694abb08c2SStefan Weinhuber break; 8704abb08c2SStefan Weinhuber } 8714abb08c2SStefan Weinhuber gneq++; 8724abb08c2SStefan Weinhuber } 8734abb08c2SStefan Weinhuber if (found) 8744abb08c2SStefan Weinhuber return ((char *)gneq)[18] & 0x07; 8754abb08c2SStefan Weinhuber else 8764abb08c2SStefan Weinhuber return 0; 8774abb08c2SStefan Weinhuber } 8784abb08c2SStefan Weinhuber 8794abb08c2SStefan Weinhuber static int dasd_eckd_read_conf(struct dasd_device *device) 8801da177e4SLinus Torvalds { 8811da177e4SLinus Torvalds void *conf_data; 8821da177e4SLinus Torvalds int conf_len, conf_data_saved; 8831da177e4SLinus Torvalds int rc; 8841da177e4SLinus Torvalds __u8 lpm; 8851da177e4SLinus Torvalds struct dasd_eckd_private *private; 8861da177e4SLinus Torvalds struct dasd_eckd_path *path_data; 8871da177e4SLinus Torvalds 8881da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 8891da177e4SLinus Torvalds path_data = (struct dasd_eckd_path *) &private->path_data; 8901da177e4SLinus Torvalds path_data->opm = ccw_device_get_path_mask(device->cdev); 8911da177e4SLinus Torvalds lpm = 0x80; 8921da177e4SLinus Torvalds conf_data_saved = 0; 8931da177e4SLinus Torvalds /* get configuration data per operational path */ 8941da177e4SLinus Torvalds for (lpm = 0x80; lpm; lpm>>= 1) { 8951da177e4SLinus Torvalds if (lpm & path_data->opm){ 89617283b56SCornelia Huck rc = dasd_eckd_read_conf_lpm(device, &conf_data, 8971da177e4SLinus Torvalds &conf_len, lpm); 8981da177e4SLinus Torvalds if (rc && rc != -EOPNOTSUPP) { /* -EOPNOTSUPP is ok */ 899fc19f381SStefan Haberland DBF_EVENT(DBF_WARNING, 9001da177e4SLinus Torvalds "Read configuration data returned " 901fc19f381SStefan Haberland "error %d for device: %s", rc, 902fc19f381SStefan Haberland dev_name(&device->cdev->dev)); 9031da177e4SLinus Torvalds return rc; 9041da177e4SLinus Torvalds } 9051da177e4SLinus Torvalds if (conf_data == NULL) { 906fc19f381SStefan Haberland DBF_EVENT(DBF_WARNING, "No configuration " 907fc19f381SStefan Haberland "data retrieved for device: %s", 908fc19f381SStefan Haberland dev_name(&device->cdev->dev)); 909d133a960SGabriel Craciunescu continue; /* no error */ 9101da177e4SLinus Torvalds } 9111da177e4SLinus Torvalds /* save first valid configuration data */ 9121da177e4SLinus Torvalds if (!conf_data_saved) { 9134abb08c2SStefan Weinhuber kfree(private->conf_data); 9144abb08c2SStefan Weinhuber private->conf_data = conf_data; 9154abb08c2SStefan Weinhuber private->conf_len = conf_len; 9164abb08c2SStefan Weinhuber if (dasd_eckd_identify_conf_parts(private)) { 9174abb08c2SStefan Weinhuber private->conf_data = NULL; 9184abb08c2SStefan Weinhuber private->conf_len = 0; 9194abb08c2SStefan Weinhuber kfree(conf_data); 9204abb08c2SStefan Weinhuber continue; 9214abb08c2SStefan Weinhuber } 9221da177e4SLinus Torvalds conf_data_saved++; 9231da177e4SLinus Torvalds } 9244abb08c2SStefan Weinhuber switch (dasd_eckd_path_access(conf_data, conf_len)) { 9251da177e4SLinus Torvalds case 0x02: 9261da177e4SLinus Torvalds path_data->npm |= lpm; 9271da177e4SLinus Torvalds break; 9281da177e4SLinus Torvalds case 0x03: 9291da177e4SLinus Torvalds path_data->ppm |= lpm; 9301da177e4SLinus Torvalds break; 9311da177e4SLinus Torvalds } 9324abb08c2SStefan Weinhuber if (conf_data != private->conf_data) 9331da177e4SLinus Torvalds kfree(conf_data); 9341da177e4SLinus Torvalds } 9351da177e4SLinus Torvalds } 9361da177e4SLinus Torvalds return 0; 9371da177e4SLinus Torvalds } 9381da177e4SLinus Torvalds 9398e09f215SStefan Weinhuber static int dasd_eckd_read_features(struct dasd_device *device) 9408e09f215SStefan Weinhuber { 9418e09f215SStefan Weinhuber struct dasd_psf_prssd_data *prssdp; 9428e09f215SStefan Weinhuber struct dasd_rssd_features *features; 9438e09f215SStefan Weinhuber struct dasd_ccw_req *cqr; 9448e09f215SStefan Weinhuber struct ccw1 *ccw; 9458e09f215SStefan Weinhuber int rc; 9468e09f215SStefan Weinhuber struct dasd_eckd_private *private; 9478e09f215SStefan Weinhuber 9488e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) device->private; 9498e09f215SStefan Weinhuber cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 9508e09f215SStefan Weinhuber 1 /* PSF */ + 1 /* RSSD */ , 9518e09f215SStefan Weinhuber (sizeof(struct dasd_psf_prssd_data) + 9528e09f215SStefan Weinhuber sizeof(struct dasd_rssd_features)), 9538e09f215SStefan Weinhuber device); 9548e09f215SStefan Weinhuber if (IS_ERR(cqr)) { 955fc19f381SStefan Haberland DBF_EVENT(DBF_WARNING, "Could not allocate initialization " 956fc19f381SStefan Haberland "request for device: %s", 957fc19f381SStefan Haberland dev_name(&device->cdev->dev)); 9588e09f215SStefan Weinhuber return PTR_ERR(cqr); 9598e09f215SStefan Weinhuber } 9608e09f215SStefan Weinhuber cqr->startdev = device; 9618e09f215SStefan Weinhuber cqr->memdev = device; 9628e09f215SStefan Weinhuber cqr->block = NULL; 9638e09f215SStefan Weinhuber clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); 9648e09f215SStefan Weinhuber cqr->retries = 5; 9658e09f215SStefan Weinhuber cqr->expires = 10 * HZ; 9668e09f215SStefan Weinhuber 9678e09f215SStefan Weinhuber /* Prepare for Read Subsystem Data */ 9688e09f215SStefan Weinhuber prssdp = (struct dasd_psf_prssd_data *) cqr->data; 9698e09f215SStefan Weinhuber memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data)); 9708e09f215SStefan Weinhuber prssdp->order = PSF_ORDER_PRSSD; 9718e09f215SStefan Weinhuber prssdp->suborder = 0x41; /* Read Feature Codes */ 9728e09f215SStefan Weinhuber /* all other bytes of prssdp must be zero */ 9738e09f215SStefan Weinhuber 9748e09f215SStefan Weinhuber ccw = cqr->cpaddr; 9758e09f215SStefan Weinhuber ccw->cmd_code = DASD_ECKD_CCW_PSF; 9768e09f215SStefan Weinhuber ccw->count = sizeof(struct dasd_psf_prssd_data); 9778e09f215SStefan Weinhuber ccw->flags |= CCW_FLAG_CC; 9788e09f215SStefan Weinhuber ccw->cda = (__u32)(addr_t) prssdp; 9798e09f215SStefan Weinhuber 9808e09f215SStefan Weinhuber /* Read Subsystem Data - feature codes */ 9818e09f215SStefan Weinhuber features = (struct dasd_rssd_features *) (prssdp + 1); 9828e09f215SStefan Weinhuber memset(features, 0, sizeof(struct dasd_rssd_features)); 9838e09f215SStefan Weinhuber 9848e09f215SStefan Weinhuber ccw++; 9858e09f215SStefan Weinhuber ccw->cmd_code = DASD_ECKD_CCW_RSSD; 9868e09f215SStefan Weinhuber ccw->count = sizeof(struct dasd_rssd_features); 9878e09f215SStefan Weinhuber ccw->cda = (__u32)(addr_t) features; 9888e09f215SStefan Weinhuber 9898e09f215SStefan Weinhuber cqr->buildclk = get_clock(); 9908e09f215SStefan Weinhuber cqr->status = DASD_CQR_FILLED; 9918e09f215SStefan Weinhuber rc = dasd_sleep_on(cqr); 9928e09f215SStefan Weinhuber if (rc == 0) { 9938e09f215SStefan Weinhuber prssdp = (struct dasd_psf_prssd_data *) cqr->data; 9948e09f215SStefan Weinhuber features = (struct dasd_rssd_features *) (prssdp + 1); 9958e09f215SStefan Weinhuber memcpy(&private->features, features, 9968e09f215SStefan Weinhuber sizeof(struct dasd_rssd_features)); 9978e09f215SStefan Weinhuber } 9988e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 9998e09f215SStefan Weinhuber return rc; 10008e09f215SStefan Weinhuber } 10018e09f215SStefan Weinhuber 10028e09f215SStefan Weinhuber 10033d052595SHorst Hummel /* 100440545573SHorst Hummel * Build CP for Perform Subsystem Function - SSC. 100540545573SHorst Hummel */ 1006f3eb5384SStefan Weinhuber static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device, 1007f3eb5384SStefan Weinhuber int enable_pav) 100840545573SHorst Hummel { 100940545573SHorst Hummel struct dasd_ccw_req *cqr; 101040545573SHorst Hummel struct dasd_psf_ssc_data *psf_ssc_data; 101140545573SHorst Hummel struct ccw1 *ccw; 101240545573SHorst Hummel 101340545573SHorst Hummel cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ , 101440545573SHorst Hummel sizeof(struct dasd_psf_ssc_data), 101540545573SHorst Hummel device); 101640545573SHorst Hummel 101740545573SHorst Hummel if (IS_ERR(cqr)) { 1018fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 101940545573SHorst Hummel "Could not allocate PSF-SSC request"); 102040545573SHorst Hummel return cqr; 102140545573SHorst Hummel } 102240545573SHorst Hummel psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data; 102340545573SHorst Hummel psf_ssc_data->order = PSF_ORDER_SSC; 1024f3eb5384SStefan Weinhuber psf_ssc_data->suborder = 0x40; 1025f3eb5384SStefan Weinhuber if (enable_pav) { 1026f3eb5384SStefan Weinhuber psf_ssc_data->suborder |= 0x88; 10278e09f215SStefan Weinhuber psf_ssc_data->reserved[0] = 0x88; 1028f3eb5384SStefan Weinhuber } 102940545573SHorst Hummel ccw = cqr->cpaddr; 103040545573SHorst Hummel ccw->cmd_code = DASD_ECKD_CCW_PSF; 103140545573SHorst Hummel ccw->cda = (__u32)(addr_t)psf_ssc_data; 103240545573SHorst Hummel ccw->count = 66; 103340545573SHorst Hummel 10348e09f215SStefan Weinhuber cqr->startdev = device; 10358e09f215SStefan Weinhuber cqr->memdev = device; 10368e09f215SStefan Weinhuber cqr->block = NULL; 103740545573SHorst Hummel cqr->expires = 10*HZ; 103840545573SHorst Hummel cqr->buildclk = get_clock(); 103940545573SHorst Hummel cqr->status = DASD_CQR_FILLED; 104040545573SHorst Hummel return cqr; 104140545573SHorst Hummel } 104240545573SHorst Hummel 104340545573SHorst Hummel /* 104440545573SHorst Hummel * Perform Subsystem Function. 104540545573SHorst Hummel * It is necessary to trigger CIO for channel revalidation since this 104640545573SHorst Hummel * call might change behaviour of DASD devices. 104740545573SHorst Hummel */ 104840545573SHorst Hummel static int 1049f3eb5384SStefan Weinhuber dasd_eckd_psf_ssc(struct dasd_device *device, int enable_pav) 105040545573SHorst Hummel { 105140545573SHorst Hummel struct dasd_ccw_req *cqr; 105240545573SHorst Hummel int rc; 105340545573SHorst Hummel 1054f3eb5384SStefan Weinhuber cqr = dasd_eckd_build_psf_ssc(device, enable_pav); 105540545573SHorst Hummel if (IS_ERR(cqr)) 105640545573SHorst Hummel return PTR_ERR(cqr); 105740545573SHorst Hummel 105840545573SHorst Hummel rc = dasd_sleep_on(cqr); 105940545573SHorst Hummel if (!rc) 106040545573SHorst Hummel /* trigger CIO to reprobe devices */ 106140545573SHorst Hummel css_schedule_reprobe(); 10628e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 106340545573SHorst Hummel return rc; 106440545573SHorst Hummel } 106540545573SHorst Hummel 106640545573SHorst Hummel /* 106740545573SHorst Hummel * Valide storage server of current device. 106840545573SHorst Hummel */ 10698e09f215SStefan Weinhuber static int dasd_eckd_validate_server(struct dasd_device *device) 107040545573SHorst Hummel { 107140545573SHorst Hummel int rc; 10728e09f215SStefan Weinhuber struct dasd_eckd_private *private; 1073f3eb5384SStefan Weinhuber int enable_pav; 107440545573SHorst Hummel 107540545573SHorst Hummel if (dasd_nopav || MACHINE_IS_VM) 1076f3eb5384SStefan Weinhuber enable_pav = 0; 1077f3eb5384SStefan Weinhuber else 1078f3eb5384SStefan Weinhuber enable_pav = 1; 1079f3eb5384SStefan Weinhuber rc = dasd_eckd_psf_ssc(device, enable_pav); 108040545573SHorst Hummel /* may be requested feature is not available on server, 108140545573SHorst Hummel * therefore just report error and go ahead */ 10828e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) device->private; 1083fc19f381SStefan Haberland DBF_EVENT(DBF_WARNING, "PSF-SSC on storage subsystem %s.%s.%04x " 1084fc19f381SStefan Haberland "returned rc=%d for device: %s", 10858e09f215SStefan Weinhuber private->uid.vendor, private->uid.serial, 1086fc19f381SStefan Haberland private->uid.ssid, rc, dev_name(&device->cdev->dev)); 108740545573SHorst Hummel /* RE-Read Configuration Data */ 108840545573SHorst Hummel return dasd_eckd_read_conf(device); 108940545573SHorst Hummel } 109040545573SHorst Hummel 109140545573SHorst Hummel /* 10923d052595SHorst Hummel * Check device characteristics. 10933d052595SHorst Hummel * If the device is accessible using ECKD discipline, the device is enabled. 10943d052595SHorst Hummel */ 10951da177e4SLinus Torvalds static int 10961da177e4SLinus Torvalds dasd_eckd_check_characteristics(struct dasd_device *device) 10971da177e4SLinus Torvalds { 10981da177e4SLinus Torvalds struct dasd_eckd_private *private; 10998e09f215SStefan Weinhuber struct dasd_block *block; 11001da177e4SLinus Torvalds void *rdc_data; 11018e09f215SStefan Weinhuber int is_known, rc; 11021da177e4SLinus Torvalds 11031da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 11041da177e4SLinus Torvalds if (private == NULL) { 1105138c014dSHorst Hummel private = kzalloc(sizeof(struct dasd_eckd_private), 11061da177e4SLinus Torvalds GFP_KERNEL | GFP_DMA); 11071da177e4SLinus Torvalds if (private == NULL) { 1108fc19f381SStefan Haberland dev_warn(&device->cdev->dev, 1109fc19f381SStefan Haberland "Allocating memory for private DASD data " 1110fc19f381SStefan Haberland "failed\n"); 11111da177e4SLinus Torvalds return -ENOMEM; 11121da177e4SLinus Torvalds } 11131da177e4SLinus Torvalds device->private = (void *) private; 11141da177e4SLinus Torvalds } 11151da177e4SLinus Torvalds /* Invalidate status of initial analysis. */ 11161da177e4SLinus Torvalds private->init_cqr_status = -1; 11171da177e4SLinus Torvalds /* Set default cache operations. */ 11181da177e4SLinus Torvalds private->attrib.operation = DASD_NORMAL_CACHE; 11191da177e4SLinus Torvalds private->attrib.nr_cyl = 0; 11201da177e4SLinus Torvalds 112140545573SHorst Hummel /* Read Configuration Data */ 112240545573SHorst Hummel rc = dasd_eckd_read_conf(device); 112340545573SHorst Hummel if (rc) 11248e09f215SStefan Weinhuber goto out_err1; 112540545573SHorst Hummel 112640545573SHorst Hummel /* Generate device unique id and register in devmap */ 11278e09f215SStefan Weinhuber rc = dasd_eckd_generate_uid(device, &private->uid); 112840545573SHorst Hummel if (rc) 11298e09f215SStefan Weinhuber goto out_err1; 11308e09f215SStefan Weinhuber dasd_set_uid(device->cdev, &private->uid); 11318e09f215SStefan Weinhuber 11328e09f215SStefan Weinhuber if (private->uid.type == UA_BASE_DEVICE) { 11338e09f215SStefan Weinhuber block = dasd_alloc_block(); 11348e09f215SStefan Weinhuber if (IS_ERR(block)) { 1135fc19f381SStefan Haberland DBF_EVENT(DBF_WARNING, "could not allocate dasd " 1136fc19f381SStefan Haberland "block structure for device: %s", 1137fc19f381SStefan Haberland dev_name(&device->cdev->dev)); 11388e09f215SStefan Weinhuber rc = PTR_ERR(block); 11398e09f215SStefan Weinhuber goto out_err1; 11408e09f215SStefan Weinhuber } 11418e09f215SStefan Weinhuber device->block = block; 11428e09f215SStefan Weinhuber block->base = device; 11438e09f215SStefan Weinhuber } 11448e09f215SStefan Weinhuber 11458e09f215SStefan Weinhuber /* register lcu with alias handling, enable PAV if this is a new lcu */ 11468e09f215SStefan Weinhuber is_known = dasd_alias_make_device_known_to_lcu(device); 11478e09f215SStefan Weinhuber if (is_known < 0) { 11488e09f215SStefan Weinhuber rc = is_known; 11498e09f215SStefan Weinhuber goto out_err2; 11508e09f215SStefan Weinhuber } 11518e09f215SStefan Weinhuber if (!is_known) { 11528e09f215SStefan Weinhuber /* new lcu found */ 11538e09f215SStefan Weinhuber rc = dasd_eckd_validate_server(device); /* will switch pav on */ 115440545573SHorst Hummel if (rc) 11558e09f215SStefan Weinhuber goto out_err3; 11568e09f215SStefan Weinhuber } 11578e09f215SStefan Weinhuber 11588e09f215SStefan Weinhuber /* Read Feature Codes */ 11598e09f215SStefan Weinhuber rc = dasd_eckd_read_features(device); 11608e09f215SStefan Weinhuber if (rc) 11618e09f215SStefan Weinhuber goto out_err3; 116240545573SHorst Hummel 11631da177e4SLinus Torvalds /* Read Device Characteristics */ 11641da177e4SLinus Torvalds rdc_data = (void *) &(private->rdc_data); 11653d052595SHorst Hummel memset(rdc_data, 0, sizeof(rdc_data)); 116617283b56SCornelia Huck rc = dasd_generic_read_dev_chars(device, "ECKD", &rdc_data, 64); 11678e09f215SStefan Weinhuber if (rc) { 1168fc19f381SStefan Haberland DBF_EVENT(DBF_WARNING, 1169fc19f381SStefan Haberland "Read device characteristics failed, rc=%d for " 1170fc19f381SStefan Haberland "device: %s", rc, dev_name(&device->cdev->dev)); 11718e09f215SStefan Weinhuber goto out_err3; 11728e09f215SStefan Weinhuber } 1173b44b0ab3SStefan Weinhuber /* find the vaild cylinder size */ 1174b44b0ab3SStefan Weinhuber if (private->rdc_data.no_cyl == LV_COMPAT_CYL && 1175b44b0ab3SStefan Weinhuber private->rdc_data.long_no_cyl) 1176b44b0ab3SStefan Weinhuber private->real_cyl = private->rdc_data.long_no_cyl; 1177b44b0ab3SStefan Weinhuber else 1178b44b0ab3SStefan Weinhuber private->real_cyl = private->rdc_data.no_cyl; 1179b44b0ab3SStefan Weinhuber 1180fc19f381SStefan Haberland dev_info(&device->cdev->dev, "New DASD %04X/%02X (CU %04X/%02X) " 1181fc19f381SStefan Haberland "with %d cylinders, %d heads, %d sectors\n", 11821da177e4SLinus Torvalds private->rdc_data.dev_type, 11831da177e4SLinus Torvalds private->rdc_data.dev_model, 11841da177e4SLinus Torvalds private->rdc_data.cu_type, 11851da177e4SLinus Torvalds private->rdc_data.cu_model.model, 1186b44b0ab3SStefan Weinhuber private->real_cyl, 11871da177e4SLinus Torvalds private->rdc_data.trk_per_cyl, 11881da177e4SLinus Torvalds private->rdc_data.sec_per_trk); 11898e09f215SStefan Weinhuber return 0; 11908e09f215SStefan Weinhuber 11918e09f215SStefan Weinhuber out_err3: 11928e09f215SStefan Weinhuber dasd_alias_disconnect_device_from_lcu(device); 11938e09f215SStefan Weinhuber out_err2: 11948e09f215SStefan Weinhuber dasd_free_block(device->block); 11958e09f215SStefan Weinhuber device->block = NULL; 11968e09f215SStefan Weinhuber out_err1: 11974abb08c2SStefan Weinhuber kfree(private->conf_data); 11988e09f215SStefan Weinhuber kfree(device->private); 11998e09f215SStefan Weinhuber device->private = NULL; 12003d052595SHorst Hummel return rc; 12011da177e4SLinus Torvalds } 12021da177e4SLinus Torvalds 12038e09f215SStefan Weinhuber static void dasd_eckd_uncheck_device(struct dasd_device *device) 12048e09f215SStefan Weinhuber { 12054abb08c2SStefan Weinhuber struct dasd_eckd_private *private; 12064abb08c2SStefan Weinhuber 12074abb08c2SStefan Weinhuber private = (struct dasd_eckd_private *) device->private; 12088e09f215SStefan Weinhuber dasd_alias_disconnect_device_from_lcu(device); 12094abb08c2SStefan Weinhuber private->ned = NULL; 12104abb08c2SStefan Weinhuber private->sneq = NULL; 12114abb08c2SStefan Weinhuber private->vdsneq = NULL; 12124abb08c2SStefan Weinhuber private->gneq = NULL; 12134abb08c2SStefan Weinhuber private->conf_len = 0; 12144abb08c2SStefan Weinhuber kfree(private->conf_data); 12154abb08c2SStefan Weinhuber private->conf_data = NULL; 12168e09f215SStefan Weinhuber } 12178e09f215SStefan Weinhuber 12181da177e4SLinus Torvalds static struct dasd_ccw_req * 12191da177e4SLinus Torvalds dasd_eckd_analysis_ccw(struct dasd_device *device) 12201da177e4SLinus Torvalds { 12211da177e4SLinus Torvalds struct dasd_eckd_private *private; 12221da177e4SLinus Torvalds struct eckd_count *count_data; 12231da177e4SLinus Torvalds struct LO_eckd_data *LO_data; 12241da177e4SLinus Torvalds struct dasd_ccw_req *cqr; 12251da177e4SLinus Torvalds struct ccw1 *ccw; 12261da177e4SLinus Torvalds int cplength, datasize; 12271da177e4SLinus Torvalds int i; 12281da177e4SLinus Torvalds 12291da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 12301da177e4SLinus Torvalds 12311da177e4SLinus Torvalds cplength = 8; 12321da177e4SLinus Torvalds datasize = sizeof(struct DE_eckd_data) + 2*sizeof(struct LO_eckd_data); 12331da177e4SLinus Torvalds cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 12341da177e4SLinus Torvalds cplength, datasize, device); 12351da177e4SLinus Torvalds if (IS_ERR(cqr)) 12361da177e4SLinus Torvalds return cqr; 12371da177e4SLinus Torvalds ccw = cqr->cpaddr; 12381da177e4SLinus Torvalds /* Define extent for the first 3 tracks. */ 12391da177e4SLinus Torvalds define_extent(ccw++, cqr->data, 0, 2, 12401da177e4SLinus Torvalds DASD_ECKD_CCW_READ_COUNT, device); 12411da177e4SLinus Torvalds LO_data = cqr->data + sizeof(struct DE_eckd_data); 12421da177e4SLinus Torvalds /* Locate record for the first 4 records on track 0. */ 12431da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 12441da177e4SLinus Torvalds locate_record(ccw++, LO_data++, 0, 0, 4, 12451da177e4SLinus Torvalds DASD_ECKD_CCW_READ_COUNT, device, 0); 12461da177e4SLinus Torvalds 12471da177e4SLinus Torvalds count_data = private->count_area; 12481da177e4SLinus Torvalds for (i = 0; i < 4; i++) { 12491da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 12501da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_READ_COUNT; 12511da177e4SLinus Torvalds ccw->flags = 0; 12521da177e4SLinus Torvalds ccw->count = 8; 12531da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) count_data; 12541da177e4SLinus Torvalds ccw++; 12551da177e4SLinus Torvalds count_data++; 12561da177e4SLinus Torvalds } 12571da177e4SLinus Torvalds 12581da177e4SLinus Torvalds /* Locate record for the first record on track 2. */ 12591da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 12601da177e4SLinus Torvalds locate_record(ccw++, LO_data++, 2, 0, 1, 12611da177e4SLinus Torvalds DASD_ECKD_CCW_READ_COUNT, device, 0); 12621da177e4SLinus Torvalds /* Read count ccw. */ 12631da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 12641da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_READ_COUNT; 12651da177e4SLinus Torvalds ccw->flags = 0; 12661da177e4SLinus Torvalds ccw->count = 8; 12671da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) count_data; 12681da177e4SLinus Torvalds 12698e09f215SStefan Weinhuber cqr->block = NULL; 12708e09f215SStefan Weinhuber cqr->startdev = device; 12718e09f215SStefan Weinhuber cqr->memdev = device; 12721da177e4SLinus Torvalds cqr->retries = 0; 12731da177e4SLinus Torvalds cqr->buildclk = get_clock(); 12741da177e4SLinus Torvalds cqr->status = DASD_CQR_FILLED; 12751da177e4SLinus Torvalds return cqr; 12761da177e4SLinus Torvalds } 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds /* 12791da177e4SLinus Torvalds * This is the callback function for the init_analysis cqr. It saves 12801da177e4SLinus Torvalds * the status of the initial analysis ccw before it frees it and kicks 12811da177e4SLinus Torvalds * the device to continue the startup sequence. This will call 12821da177e4SLinus Torvalds * dasd_eckd_do_analysis again (if the devices has not been marked 12831da177e4SLinus Torvalds * for deletion in the meantime). 12841da177e4SLinus Torvalds */ 12851da177e4SLinus Torvalds static void 12861da177e4SLinus Torvalds dasd_eckd_analysis_callback(struct dasd_ccw_req *init_cqr, void *data) 12871da177e4SLinus Torvalds { 12881da177e4SLinus Torvalds struct dasd_eckd_private *private; 12891da177e4SLinus Torvalds struct dasd_device *device; 12901da177e4SLinus Torvalds 12918e09f215SStefan Weinhuber device = init_cqr->startdev; 12921da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 12931da177e4SLinus Torvalds private->init_cqr_status = init_cqr->status; 12941da177e4SLinus Torvalds dasd_sfree_request(init_cqr, device); 12951da177e4SLinus Torvalds dasd_kick_device(device); 12961da177e4SLinus Torvalds } 12971da177e4SLinus Torvalds 12981da177e4SLinus Torvalds static int 12998e09f215SStefan Weinhuber dasd_eckd_start_analysis(struct dasd_block *block) 13001da177e4SLinus Torvalds { 13011da177e4SLinus Torvalds struct dasd_eckd_private *private; 13021da177e4SLinus Torvalds struct dasd_ccw_req *init_cqr; 13031da177e4SLinus Torvalds 13048e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) block->base->private; 13058e09f215SStefan Weinhuber init_cqr = dasd_eckd_analysis_ccw(block->base); 13061da177e4SLinus Torvalds if (IS_ERR(init_cqr)) 13071da177e4SLinus Torvalds return PTR_ERR(init_cqr); 13081da177e4SLinus Torvalds init_cqr->callback = dasd_eckd_analysis_callback; 13091da177e4SLinus Torvalds init_cqr->callback_data = NULL; 13101da177e4SLinus Torvalds init_cqr->expires = 5*HZ; 13111da177e4SLinus Torvalds dasd_add_request_head(init_cqr); 13121da177e4SLinus Torvalds return -EAGAIN; 13131da177e4SLinus Torvalds } 13141da177e4SLinus Torvalds 13151da177e4SLinus Torvalds static int 13168e09f215SStefan Weinhuber dasd_eckd_end_analysis(struct dasd_block *block) 13171da177e4SLinus Torvalds { 13188e09f215SStefan Weinhuber struct dasd_device *device; 13191da177e4SLinus Torvalds struct dasd_eckd_private *private; 13201da177e4SLinus Torvalds struct eckd_count *count_area; 13211da177e4SLinus Torvalds unsigned int sb, blk_per_trk; 13221da177e4SLinus Torvalds int status, i; 13231da177e4SLinus Torvalds 13248e09f215SStefan Weinhuber device = block->base; 13251da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 13261da177e4SLinus Torvalds status = private->init_cqr_status; 13271da177e4SLinus Torvalds private->init_cqr_status = -1; 13281da177e4SLinus Torvalds if (status != DASD_CQR_DONE) { 1329fc19f381SStefan Haberland dev_warn(&device->cdev->dev, 1330fc19f381SStefan Haberland "The DASD is not formatted\n"); 13311da177e4SLinus Torvalds return -EMEDIUMTYPE; 13321da177e4SLinus Torvalds } 13331da177e4SLinus Torvalds 13341da177e4SLinus Torvalds private->uses_cdl = 1; 13351da177e4SLinus Torvalds /* Check Track 0 for Compatible Disk Layout */ 13361da177e4SLinus Torvalds count_area = NULL; 13371da177e4SLinus Torvalds for (i = 0; i < 3; i++) { 13381da177e4SLinus Torvalds if (private->count_area[i].kl != 4 || 13391da177e4SLinus Torvalds private->count_area[i].dl != dasd_eckd_cdl_reclen(i) - 4) { 13401da177e4SLinus Torvalds private->uses_cdl = 0; 13411da177e4SLinus Torvalds break; 13421da177e4SLinus Torvalds } 13431da177e4SLinus Torvalds } 13441da177e4SLinus Torvalds if (i == 3) 13451da177e4SLinus Torvalds count_area = &private->count_area[4]; 13461da177e4SLinus Torvalds 13471da177e4SLinus Torvalds if (private->uses_cdl == 0) { 13481da177e4SLinus Torvalds for (i = 0; i < 5; i++) { 13491da177e4SLinus Torvalds if ((private->count_area[i].kl != 0) || 13501da177e4SLinus Torvalds (private->count_area[i].dl != 13511da177e4SLinus Torvalds private->count_area[0].dl)) 13521da177e4SLinus Torvalds break; 13531da177e4SLinus Torvalds } 13541da177e4SLinus Torvalds if (i == 5) 13551da177e4SLinus Torvalds count_area = &private->count_area[0]; 13561da177e4SLinus Torvalds } else { 13571da177e4SLinus Torvalds if (private->count_area[3].record == 1) 1358fc19f381SStefan Haberland dev_warn(&device->cdev->dev, 1359fc19f381SStefan Haberland "Track 0 has no records following the VTOC\n"); 13601da177e4SLinus Torvalds } 13611da177e4SLinus Torvalds if (count_area != NULL && count_area->kl == 0) { 13621da177e4SLinus Torvalds /* we found notthing violating our disk layout */ 13631da177e4SLinus Torvalds if (dasd_check_blocksize(count_area->dl) == 0) 13648e09f215SStefan Weinhuber block->bp_block = count_area->dl; 13651da177e4SLinus Torvalds } 13668e09f215SStefan Weinhuber if (block->bp_block == 0) { 1367fc19f381SStefan Haberland dev_warn(&device->cdev->dev, 1368fc19f381SStefan Haberland "The disk layout of the DASD is not supported\n"); 13691da177e4SLinus Torvalds return -EMEDIUMTYPE; 13701da177e4SLinus Torvalds } 13718e09f215SStefan Weinhuber block->s2b_shift = 0; /* bits to shift 512 to get a block */ 13728e09f215SStefan Weinhuber for (sb = 512; sb < block->bp_block; sb = sb << 1) 13738e09f215SStefan Weinhuber block->s2b_shift++; 13741da177e4SLinus Torvalds 13758e09f215SStefan Weinhuber blk_per_trk = recs_per_track(&private->rdc_data, 0, block->bp_block); 1376b44b0ab3SStefan Weinhuber block->blocks = (private->real_cyl * 13771da177e4SLinus Torvalds private->rdc_data.trk_per_cyl * 13781da177e4SLinus Torvalds blk_per_trk); 13791da177e4SLinus Torvalds 1380fc19f381SStefan Haberland dev_info(&device->cdev->dev, 1381fc19f381SStefan Haberland "DASD with %d KB/block, %d KB total size, %d KB/track, " 1382fc19f381SStefan Haberland "%s\n", (block->bp_block >> 10), 1383b44b0ab3SStefan Weinhuber ((private->real_cyl * 13841da177e4SLinus Torvalds private->rdc_data.trk_per_cyl * 13858e09f215SStefan Weinhuber blk_per_trk * (block->bp_block >> 9)) >> 1), 13868e09f215SStefan Weinhuber ((blk_per_trk * block->bp_block) >> 10), 13871da177e4SLinus Torvalds private->uses_cdl ? 13881da177e4SLinus Torvalds "compatible disk layout" : "linux disk layout"); 13891da177e4SLinus Torvalds 13901da177e4SLinus Torvalds return 0; 13911da177e4SLinus Torvalds } 13921da177e4SLinus Torvalds 13938e09f215SStefan Weinhuber static int dasd_eckd_do_analysis(struct dasd_block *block) 13941da177e4SLinus Torvalds { 13951da177e4SLinus Torvalds struct dasd_eckd_private *private; 13961da177e4SLinus Torvalds 13978e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) block->base->private; 13981da177e4SLinus Torvalds if (private->init_cqr_status < 0) 13998e09f215SStefan Weinhuber return dasd_eckd_start_analysis(block); 14001da177e4SLinus Torvalds else 14018e09f215SStefan Weinhuber return dasd_eckd_end_analysis(block); 14021da177e4SLinus Torvalds } 14031da177e4SLinus Torvalds 14048e09f215SStefan Weinhuber static int dasd_eckd_ready_to_online(struct dasd_device *device) 14058e09f215SStefan Weinhuber { 14068e09f215SStefan Weinhuber return dasd_alias_add_device(device); 14078e09f215SStefan Weinhuber }; 14088e09f215SStefan Weinhuber 14098e09f215SStefan Weinhuber static int dasd_eckd_online_to_ready(struct dasd_device *device) 14108e09f215SStefan Weinhuber { 14118e09f215SStefan Weinhuber return dasd_alias_remove_device(device); 14128e09f215SStefan Weinhuber }; 14138e09f215SStefan Weinhuber 14141da177e4SLinus Torvalds static int 14158e09f215SStefan Weinhuber dasd_eckd_fill_geometry(struct dasd_block *block, struct hd_geometry *geo) 14161da177e4SLinus Torvalds { 14171da177e4SLinus Torvalds struct dasd_eckd_private *private; 14181da177e4SLinus Torvalds 14198e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) block->base->private; 14208e09f215SStefan Weinhuber if (dasd_check_blocksize(block->bp_block) == 0) { 14211da177e4SLinus Torvalds geo->sectors = recs_per_track(&private->rdc_data, 14228e09f215SStefan Weinhuber 0, block->bp_block); 14231da177e4SLinus Torvalds } 14241da177e4SLinus Torvalds geo->cylinders = private->rdc_data.no_cyl; 14251da177e4SLinus Torvalds geo->heads = private->rdc_data.trk_per_cyl; 14261da177e4SLinus Torvalds return 0; 14271da177e4SLinus Torvalds } 14281da177e4SLinus Torvalds 14291da177e4SLinus Torvalds static struct dasd_ccw_req * 14301da177e4SLinus Torvalds dasd_eckd_format_device(struct dasd_device * device, 14311da177e4SLinus Torvalds struct format_data_t * fdata) 14321da177e4SLinus Torvalds { 14331da177e4SLinus Torvalds struct dasd_eckd_private *private; 14341da177e4SLinus Torvalds struct dasd_ccw_req *fcp; 14351da177e4SLinus Torvalds struct eckd_count *ect; 14361da177e4SLinus Torvalds struct ccw1 *ccw; 14371da177e4SLinus Torvalds void *data; 1438b44b0ab3SStefan Weinhuber int rpt; 1439b44b0ab3SStefan Weinhuber struct ch_t address; 14401da177e4SLinus Torvalds int cplength, datasize; 14411da177e4SLinus Torvalds int i; 1442f9a28f7bSJean-Baptiste Joret int intensity = 0; 1443f9a28f7bSJean-Baptiste Joret int r0_perm; 14441da177e4SLinus Torvalds 14451da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 14461da177e4SLinus Torvalds rpt = recs_per_track(&private->rdc_data, 0, fdata->blksize); 1447b44b0ab3SStefan Weinhuber set_ch_t(&address, 1448b44b0ab3SStefan Weinhuber fdata->start_unit / private->rdc_data.trk_per_cyl, 1449b44b0ab3SStefan Weinhuber fdata->start_unit % private->rdc_data.trk_per_cyl); 14501da177e4SLinus Torvalds 14511da177e4SLinus Torvalds /* Sanity checks. */ 14521da177e4SLinus Torvalds if (fdata->start_unit >= 1453b44b0ab3SStefan Weinhuber (private->real_cyl * private->rdc_data.trk_per_cyl)) { 1454fc19f381SStefan Haberland dev_warn(&device->cdev->dev, "Start track number %d used in " 1455fc19f381SStefan Haberland "formatting is too big\n", fdata->start_unit); 14561da177e4SLinus Torvalds return ERR_PTR(-EINVAL); 14571da177e4SLinus Torvalds } 14581da177e4SLinus Torvalds if (fdata->start_unit > fdata->stop_unit) { 1459fc19f381SStefan Haberland dev_warn(&device->cdev->dev, "Start track %d used in " 1460fc19f381SStefan Haberland "formatting exceeds end track\n", fdata->start_unit); 14611da177e4SLinus Torvalds return ERR_PTR(-EINVAL); 14621da177e4SLinus Torvalds } 14631da177e4SLinus Torvalds if (dasd_check_blocksize(fdata->blksize) != 0) { 1464fc19f381SStefan Haberland dev_warn(&device->cdev->dev, 1465fc19f381SStefan Haberland "The DASD cannot be formatted with block size %d\n", 14661da177e4SLinus Torvalds fdata->blksize); 14671da177e4SLinus Torvalds return ERR_PTR(-EINVAL); 14681da177e4SLinus Torvalds } 14691da177e4SLinus Torvalds 14701da177e4SLinus Torvalds /* 14711da177e4SLinus Torvalds * fdata->intensity is a bit string that tells us what to do: 14721da177e4SLinus Torvalds * Bit 0: write record zero 14731da177e4SLinus Torvalds * Bit 1: write home address, currently not supported 14741da177e4SLinus Torvalds * Bit 2: invalidate tracks 14751da177e4SLinus Torvalds * Bit 3: use OS/390 compatible disk layout (cdl) 1476f9a28f7bSJean-Baptiste Joret * Bit 4: do not allow storage subsystem to modify record zero 14771da177e4SLinus Torvalds * Only some bit combinations do make sense. 14781da177e4SLinus Torvalds */ 1479f9a28f7bSJean-Baptiste Joret if (fdata->intensity & 0x10) { 1480f9a28f7bSJean-Baptiste Joret r0_perm = 0; 1481f9a28f7bSJean-Baptiste Joret intensity = fdata->intensity & ~0x10; 1482f9a28f7bSJean-Baptiste Joret } else { 1483f9a28f7bSJean-Baptiste Joret r0_perm = 1; 1484f9a28f7bSJean-Baptiste Joret intensity = fdata->intensity; 1485f9a28f7bSJean-Baptiste Joret } 1486f9a28f7bSJean-Baptiste Joret switch (intensity) { 14871da177e4SLinus Torvalds case 0x00: /* Normal format */ 14881da177e4SLinus Torvalds case 0x08: /* Normal format, use cdl. */ 14891da177e4SLinus Torvalds cplength = 2 + rpt; 14901da177e4SLinus Torvalds datasize = sizeof(struct DE_eckd_data) + 14911da177e4SLinus Torvalds sizeof(struct LO_eckd_data) + 14921da177e4SLinus Torvalds rpt * sizeof(struct eckd_count); 14931da177e4SLinus Torvalds break; 14941da177e4SLinus Torvalds case 0x01: /* Write record zero and format track. */ 14951da177e4SLinus Torvalds case 0x09: /* Write record zero and format track, use cdl. */ 14961da177e4SLinus Torvalds cplength = 3 + rpt; 14971da177e4SLinus Torvalds datasize = sizeof(struct DE_eckd_data) + 14981da177e4SLinus Torvalds sizeof(struct LO_eckd_data) + 14991da177e4SLinus Torvalds sizeof(struct eckd_count) + 15001da177e4SLinus Torvalds rpt * sizeof(struct eckd_count); 15011da177e4SLinus Torvalds break; 15021da177e4SLinus Torvalds case 0x04: /* Invalidate track. */ 15031da177e4SLinus Torvalds case 0x0c: /* Invalidate track, use cdl. */ 15041da177e4SLinus Torvalds cplength = 3; 15051da177e4SLinus Torvalds datasize = sizeof(struct DE_eckd_data) + 15061da177e4SLinus Torvalds sizeof(struct LO_eckd_data) + 15071da177e4SLinus Torvalds sizeof(struct eckd_count); 15081da177e4SLinus Torvalds break; 15091da177e4SLinus Torvalds default: 1510fc19f381SStefan Haberland dev_warn(&device->cdev->dev, "An I/O control call used " 1511fc19f381SStefan Haberland "incorrect flags 0x%x\n", fdata->intensity); 15121da177e4SLinus Torvalds return ERR_PTR(-EINVAL); 15131da177e4SLinus Torvalds } 15141da177e4SLinus Torvalds /* Allocate the format ccw request. */ 15151da177e4SLinus Torvalds fcp = dasd_smalloc_request(dasd_eckd_discipline.name, 15161da177e4SLinus Torvalds cplength, datasize, device); 15171da177e4SLinus Torvalds if (IS_ERR(fcp)) 15181da177e4SLinus Torvalds return fcp; 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvalds data = fcp->data; 15211da177e4SLinus Torvalds ccw = fcp->cpaddr; 15221da177e4SLinus Torvalds 1523f9a28f7bSJean-Baptiste Joret switch (intensity & ~0x08) { 15241da177e4SLinus Torvalds case 0x00: /* Normal format. */ 15251da177e4SLinus Torvalds define_extent(ccw++, (struct DE_eckd_data *) data, 15261da177e4SLinus Torvalds fdata->start_unit, fdata->start_unit, 15271da177e4SLinus Torvalds DASD_ECKD_CCW_WRITE_CKD, device); 1528f9a28f7bSJean-Baptiste Joret /* grant subsystem permission to format R0 */ 1529f9a28f7bSJean-Baptiste Joret if (r0_perm) 1530f9a28f7bSJean-Baptiste Joret ((struct DE_eckd_data *)data)->ga_extended |= 0x04; 15311da177e4SLinus Torvalds data += sizeof(struct DE_eckd_data); 15321da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 15331da177e4SLinus Torvalds locate_record(ccw++, (struct LO_eckd_data *) data, 15341da177e4SLinus Torvalds fdata->start_unit, 0, rpt, 15351da177e4SLinus Torvalds DASD_ECKD_CCW_WRITE_CKD, device, 15361da177e4SLinus Torvalds fdata->blksize); 15371da177e4SLinus Torvalds data += sizeof(struct LO_eckd_data); 15381da177e4SLinus Torvalds break; 15391da177e4SLinus Torvalds case 0x01: /* Write record zero + format track. */ 15401da177e4SLinus Torvalds define_extent(ccw++, (struct DE_eckd_data *) data, 15411da177e4SLinus Torvalds fdata->start_unit, fdata->start_unit, 15421da177e4SLinus Torvalds DASD_ECKD_CCW_WRITE_RECORD_ZERO, 15431da177e4SLinus Torvalds device); 15441da177e4SLinus Torvalds data += sizeof(struct DE_eckd_data); 15451da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 15461da177e4SLinus Torvalds locate_record(ccw++, (struct LO_eckd_data *) data, 15471da177e4SLinus Torvalds fdata->start_unit, 0, rpt + 1, 15481da177e4SLinus Torvalds DASD_ECKD_CCW_WRITE_RECORD_ZERO, device, 15498e09f215SStefan Weinhuber device->block->bp_block); 15501da177e4SLinus Torvalds data += sizeof(struct LO_eckd_data); 15511da177e4SLinus Torvalds break; 15521da177e4SLinus Torvalds case 0x04: /* Invalidate track. */ 15531da177e4SLinus Torvalds define_extent(ccw++, (struct DE_eckd_data *) data, 15541da177e4SLinus Torvalds fdata->start_unit, fdata->start_unit, 15551da177e4SLinus Torvalds DASD_ECKD_CCW_WRITE_CKD, device); 15561da177e4SLinus Torvalds data += sizeof(struct DE_eckd_data); 15571da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 15581da177e4SLinus Torvalds locate_record(ccw++, (struct LO_eckd_data *) data, 15591da177e4SLinus Torvalds fdata->start_unit, 0, 1, 15601da177e4SLinus Torvalds DASD_ECKD_CCW_WRITE_CKD, device, 8); 15611da177e4SLinus Torvalds data += sizeof(struct LO_eckd_data); 15621da177e4SLinus Torvalds break; 15631da177e4SLinus Torvalds } 1564f9a28f7bSJean-Baptiste Joret if (intensity & 0x01) { /* write record zero */ 15651da177e4SLinus Torvalds ect = (struct eckd_count *) data; 15661da177e4SLinus Torvalds data += sizeof(struct eckd_count); 1567b44b0ab3SStefan Weinhuber ect->cyl = address.cyl; 1568b44b0ab3SStefan Weinhuber ect->head = address.head; 15691da177e4SLinus Torvalds ect->record = 0; 15701da177e4SLinus Torvalds ect->kl = 0; 15711da177e4SLinus Torvalds ect->dl = 8; 15721da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 15731da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_WRITE_RECORD_ZERO; 15741da177e4SLinus Torvalds ccw->flags = CCW_FLAG_SLI; 15751da177e4SLinus Torvalds ccw->count = 8; 15761da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) ect; 15771da177e4SLinus Torvalds ccw++; 15781da177e4SLinus Torvalds } 1579f9a28f7bSJean-Baptiste Joret if ((intensity & ~0x08) & 0x04) { /* erase track */ 15801da177e4SLinus Torvalds ect = (struct eckd_count *) data; 15811da177e4SLinus Torvalds data += sizeof(struct eckd_count); 1582b44b0ab3SStefan Weinhuber ect->cyl = address.cyl; 1583b44b0ab3SStefan Weinhuber ect->head = address.head; 15841da177e4SLinus Torvalds ect->record = 1; 15851da177e4SLinus Torvalds ect->kl = 0; 15861da177e4SLinus Torvalds ect->dl = 0; 15871da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 15881da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_WRITE_CKD; 15891da177e4SLinus Torvalds ccw->flags = CCW_FLAG_SLI; 15901da177e4SLinus Torvalds ccw->count = 8; 15911da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) ect; 15921da177e4SLinus Torvalds } else { /* write remaining records */ 15931da177e4SLinus Torvalds for (i = 0; i < rpt; i++) { 15941da177e4SLinus Torvalds ect = (struct eckd_count *) data; 15951da177e4SLinus Torvalds data += sizeof(struct eckd_count); 1596b44b0ab3SStefan Weinhuber ect->cyl = address.cyl; 1597b44b0ab3SStefan Weinhuber ect->head = address.head; 15981da177e4SLinus Torvalds ect->record = i + 1; 15991da177e4SLinus Torvalds ect->kl = 0; 16001da177e4SLinus Torvalds ect->dl = fdata->blksize; 16011da177e4SLinus Torvalds /* Check for special tracks 0-1 when formatting CDL */ 1602f9a28f7bSJean-Baptiste Joret if ((intensity & 0x08) && 16031da177e4SLinus Torvalds fdata->start_unit == 0) { 16041da177e4SLinus Torvalds if (i < 3) { 16051da177e4SLinus Torvalds ect->kl = 4; 16061da177e4SLinus Torvalds ect->dl = sizes_trk0[i] - 4; 16071da177e4SLinus Torvalds } 16081da177e4SLinus Torvalds } 1609f9a28f7bSJean-Baptiste Joret if ((intensity & 0x08) && 16101da177e4SLinus Torvalds fdata->start_unit == 1) { 16111da177e4SLinus Torvalds ect->kl = 44; 16121da177e4SLinus Torvalds ect->dl = LABEL_SIZE - 44; 16131da177e4SLinus Torvalds } 16141da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 16151da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_WRITE_CKD; 16161da177e4SLinus Torvalds ccw->flags = CCW_FLAG_SLI; 16171da177e4SLinus Torvalds ccw->count = 8; 16181da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) ect; 16191da177e4SLinus Torvalds ccw++; 16201da177e4SLinus Torvalds } 16211da177e4SLinus Torvalds } 16228e09f215SStefan Weinhuber fcp->startdev = device; 16238e09f215SStefan Weinhuber fcp->memdev = device; 16248e09f215SStefan Weinhuber clear_bit(DASD_CQR_FLAGS_USE_ERP, &fcp->flags); 16258e09f215SStefan Weinhuber fcp->retries = 5; /* set retry counter to enable default ERP */ 16261da177e4SLinus Torvalds fcp->buildclk = get_clock(); 16271da177e4SLinus Torvalds fcp->status = DASD_CQR_FILLED; 16281da177e4SLinus Torvalds return fcp; 16291da177e4SLinus Torvalds } 16301da177e4SLinus Torvalds 16318e09f215SStefan Weinhuber static void dasd_eckd_handle_terminated_request(struct dasd_ccw_req *cqr) 16321da177e4SLinus Torvalds { 16338e09f215SStefan Weinhuber cqr->status = DASD_CQR_FILLED; 16348e09f215SStefan Weinhuber if (cqr->block && (cqr->startdev != cqr->block->base)) { 16358e09f215SStefan Weinhuber dasd_eckd_reset_ccw_to_base_io(cqr); 16368e09f215SStefan Weinhuber cqr->startdev = cqr->block->base; 16371da177e4SLinus Torvalds } 16388e09f215SStefan Weinhuber }; 16391da177e4SLinus Torvalds 16401da177e4SLinus Torvalds static dasd_erp_fn_t 16411da177e4SLinus Torvalds dasd_eckd_erp_action(struct dasd_ccw_req * cqr) 16421da177e4SLinus Torvalds { 16438e09f215SStefan Weinhuber struct dasd_device *device = (struct dasd_device *) cqr->startdev; 16441da177e4SLinus Torvalds struct ccw_device *cdev = device->cdev; 16451da177e4SLinus Torvalds 16461da177e4SLinus Torvalds switch (cdev->id.cu_type) { 16471da177e4SLinus Torvalds case 0x3990: 16481da177e4SLinus Torvalds case 0x2105: 16491da177e4SLinus Torvalds case 0x2107: 16501da177e4SLinus Torvalds case 0x1750: 16511da177e4SLinus Torvalds return dasd_3990_erp_action; 16521da177e4SLinus Torvalds case 0x9343: 16531da177e4SLinus Torvalds case 0x3880: 16541da177e4SLinus Torvalds default: 16551da177e4SLinus Torvalds return dasd_default_erp_action; 16561da177e4SLinus Torvalds } 16571da177e4SLinus Torvalds } 16581da177e4SLinus Torvalds 16591da177e4SLinus Torvalds static dasd_erp_fn_t 16601da177e4SLinus Torvalds dasd_eckd_erp_postaction(struct dasd_ccw_req * cqr) 16611da177e4SLinus Torvalds { 16621da177e4SLinus Torvalds return dasd_default_erp_postaction; 16631da177e4SLinus Torvalds } 16641da177e4SLinus Torvalds 16658e09f215SStefan Weinhuber 16668e09f215SStefan Weinhuber static void dasd_eckd_handle_unsolicited_interrupt(struct dasd_device *device, 16678e09f215SStefan Weinhuber struct irb *irb) 16688e09f215SStefan Weinhuber { 16698e09f215SStefan Weinhuber char mask; 1670f3eb5384SStefan Weinhuber char *sense = NULL; 16718e09f215SStefan Weinhuber 16728e09f215SStefan Weinhuber /* first of all check for state change pending interrupt */ 16738e09f215SStefan Weinhuber mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP; 1674f3eb5384SStefan Weinhuber if ((scsw_dstat(&irb->scsw) & mask) == mask) { 16758e09f215SStefan Weinhuber dasd_generic_handle_state_change(device); 16768e09f215SStefan Weinhuber return; 16778e09f215SStefan Weinhuber } 16788e09f215SStefan Weinhuber 16798e09f215SStefan Weinhuber /* summary unit check */ 1680f3eb5384SStefan Weinhuber if ((scsw_dstat(&irb->scsw) & DEV_STAT_UNIT_CHECK) && 168123d805b6SPeter Oberparleiter (irb->ecw[7] == 0x0D)) { 16828e09f215SStefan Weinhuber dasd_alias_handle_summary_unit_check(device, irb); 16838e09f215SStefan Weinhuber return; 16848e09f215SStefan Weinhuber } 16858e09f215SStefan Weinhuber 1686f3eb5384SStefan Weinhuber sense = dasd_get_sense(irb); 1687f60c768cSStefan Haberland /* service information message SIM */ 1688f3eb5384SStefan Weinhuber if (sense && !(sense[27] & DASD_SENSE_BIT_0) && 1689f3eb5384SStefan Weinhuber ((sense[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE)) { 1690f3eb5384SStefan Weinhuber dasd_3990_erp_handle_sim(device, sense); 16919d853cafSStefan Haberland dasd_schedule_device_bh(device); 1692f60c768cSStefan Haberland return; 1693f60c768cSStefan Haberland } 1694f60c768cSStefan Haberland 1695f3eb5384SStefan Weinhuber if ((scsw_cc(&irb->scsw) == 1) && 1696f3eb5384SStefan Weinhuber (scsw_fctl(&irb->scsw) & SCSW_FCTL_START_FUNC) && 1697f3eb5384SStefan Weinhuber (scsw_actl(&irb->scsw) & SCSW_ACTL_START_PEND) && 1698f3eb5384SStefan Weinhuber (scsw_stctl(&irb->scsw) & SCSW_STCTL_STATUS_PEND)) { 1699ada3df91SStefan Haberland /* fake irb do nothing, they are handled elsewhere */ 17008e09f215SStefan Weinhuber dasd_schedule_device_bh(device); 1701ada3df91SStefan Haberland return; 1702ada3df91SStefan Haberland } 17038e09f215SStefan Weinhuber 1704f3eb5384SStefan Weinhuber if (!sense) { 1705ada3df91SStefan Haberland /* just report other unsolicited interrupts */ 1706fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_ERR, device, "%s", 1707ada3df91SStefan Haberland "unsolicited interrupt received"); 1708ada3df91SStefan Haberland } else { 1709fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_ERR, device, "%s", 1710ada3df91SStefan Haberland "unsolicited interrupt received " 1711ada3df91SStefan Haberland "(sense available)"); 1712fc19f381SStefan Haberland device->discipline->dump_sense_dbf(device, NULL, irb, 1713fc19f381SStefan Haberland "unsolicited"); 1714ada3df91SStefan Haberland } 1715ada3df91SStefan Haberland 1716ada3df91SStefan Haberland dasd_schedule_device_bh(device); 17178e09f215SStefan Weinhuber return; 17188e09f215SStefan Weinhuber }; 17198e09f215SStefan Weinhuber 1720f3eb5384SStefan Weinhuber 1721f3eb5384SStefan Weinhuber static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single( 1722f3eb5384SStefan Weinhuber struct dasd_device *startdev, 17238e09f215SStefan Weinhuber struct dasd_block *block, 1724f3eb5384SStefan Weinhuber struct request *req, 1725f3eb5384SStefan Weinhuber sector_t first_rec, 1726f3eb5384SStefan Weinhuber sector_t last_rec, 1727f3eb5384SStefan Weinhuber sector_t first_trk, 1728f3eb5384SStefan Weinhuber sector_t last_trk, 1729f3eb5384SStefan Weinhuber unsigned int first_offs, 1730f3eb5384SStefan Weinhuber unsigned int last_offs, 1731f3eb5384SStefan Weinhuber unsigned int blk_per_trk, 1732f3eb5384SStefan Weinhuber unsigned int blksize) 17331da177e4SLinus Torvalds { 17341da177e4SLinus Torvalds struct dasd_eckd_private *private; 17351da177e4SLinus Torvalds unsigned long *idaws; 17361da177e4SLinus Torvalds struct LO_eckd_data *LO_data; 17371da177e4SLinus Torvalds struct dasd_ccw_req *cqr; 17381da177e4SLinus Torvalds struct ccw1 *ccw; 17395705f702SNeilBrown struct req_iterator iter; 17401da177e4SLinus Torvalds struct bio_vec *bv; 17411da177e4SLinus Torvalds char *dst; 1742f3eb5384SStefan Weinhuber unsigned int off; 17431da177e4SLinus Torvalds int count, cidaw, cplength, datasize; 1744f3eb5384SStefan Weinhuber sector_t recid; 17451da177e4SLinus Torvalds unsigned char cmd, rcmd; 17468e09f215SStefan Weinhuber int use_prefix; 17478e09f215SStefan Weinhuber struct dasd_device *basedev; 17481da177e4SLinus Torvalds 17498e09f215SStefan Weinhuber basedev = block->base; 17508e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) basedev->private; 17511da177e4SLinus Torvalds if (rq_data_dir(req) == READ) 17521da177e4SLinus Torvalds cmd = DASD_ECKD_CCW_READ_MT; 17531da177e4SLinus Torvalds else if (rq_data_dir(req) == WRITE) 17541da177e4SLinus Torvalds cmd = DASD_ECKD_CCW_WRITE_MT; 17551da177e4SLinus Torvalds else 17561da177e4SLinus Torvalds return ERR_PTR(-EINVAL); 1757f3eb5384SStefan Weinhuber 17581da177e4SLinus Torvalds /* Check struct bio and count the number of blocks for the request. */ 17591da177e4SLinus Torvalds count = 0; 17601da177e4SLinus Torvalds cidaw = 0; 17615705f702SNeilBrown rq_for_each_segment(bv, req, iter) { 17621da177e4SLinus Torvalds if (bv->bv_len & (blksize - 1)) 17631da177e4SLinus Torvalds /* Eckd can only do full blocks. */ 17641da177e4SLinus Torvalds return ERR_PTR(-EINVAL); 17658e09f215SStefan Weinhuber count += bv->bv_len >> (block->s2b_shift + 9); 1766347a8dc3SMartin Schwidefsky #if defined(CONFIG_64BIT) 17676c92e699SJens Axboe if (idal_is_needed (page_address(bv->bv_page), bv->bv_len)) 17688e09f215SStefan Weinhuber cidaw += bv->bv_len >> (block->s2b_shift + 9); 17691da177e4SLinus Torvalds #endif 17701da177e4SLinus Torvalds } 17711da177e4SLinus Torvalds /* Paranoia. */ 17721da177e4SLinus Torvalds if (count != last_rec - first_rec + 1) 17731da177e4SLinus Torvalds return ERR_PTR(-EINVAL); 17748e09f215SStefan Weinhuber 17758e09f215SStefan Weinhuber /* use the prefix command if available */ 17768e09f215SStefan Weinhuber use_prefix = private->features.feature[8] & 0x01; 17778e09f215SStefan Weinhuber if (use_prefix) { 17788e09f215SStefan Weinhuber /* 1x prefix + number of blocks */ 17798e09f215SStefan Weinhuber cplength = 2 + count; 17808e09f215SStefan Weinhuber /* 1x prefix + cidaws*sizeof(long) */ 17818e09f215SStefan Weinhuber datasize = sizeof(struct PFX_eckd_data) + 17828e09f215SStefan Weinhuber sizeof(struct LO_eckd_data) + 17838e09f215SStefan Weinhuber cidaw * sizeof(unsigned long); 17848e09f215SStefan Weinhuber } else { 17851da177e4SLinus Torvalds /* 1x define extent + 1x locate record + number of blocks */ 17861da177e4SLinus Torvalds cplength = 2 + count; 17871da177e4SLinus Torvalds /* 1x define extent + 1x locate record + cidaws*sizeof(long) */ 17888e09f215SStefan Weinhuber datasize = sizeof(struct DE_eckd_data) + 17898e09f215SStefan Weinhuber sizeof(struct LO_eckd_data) + 17901da177e4SLinus Torvalds cidaw * sizeof(unsigned long); 17918e09f215SStefan Weinhuber } 17921da177e4SLinus Torvalds /* Find out the number of additional locate record ccws for cdl. */ 17931da177e4SLinus Torvalds if (private->uses_cdl && first_rec < 2*blk_per_trk) { 17941da177e4SLinus Torvalds if (last_rec >= 2*blk_per_trk) 17951da177e4SLinus Torvalds count = 2*blk_per_trk - first_rec; 17961da177e4SLinus Torvalds cplength += count; 17971da177e4SLinus Torvalds datasize += count*sizeof(struct LO_eckd_data); 17981da177e4SLinus Torvalds } 17991da177e4SLinus Torvalds /* Allocate the ccw request. */ 18001da177e4SLinus Torvalds cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 18018e09f215SStefan Weinhuber cplength, datasize, startdev); 18021da177e4SLinus Torvalds if (IS_ERR(cqr)) 18031da177e4SLinus Torvalds return cqr; 18041da177e4SLinus Torvalds ccw = cqr->cpaddr; 18058e09f215SStefan Weinhuber /* First ccw is define extent or prefix. */ 18068e09f215SStefan Weinhuber if (use_prefix) { 18078e09f215SStefan Weinhuber if (prefix(ccw++, cqr->data, first_trk, 18088e09f215SStefan Weinhuber last_trk, cmd, basedev, startdev) == -EAGAIN) { 18098e09f215SStefan Weinhuber /* Clock not in sync and XRC is enabled. 18108e09f215SStefan Weinhuber * Try again later. 18118e09f215SStefan Weinhuber */ 18128e09f215SStefan Weinhuber dasd_sfree_request(cqr, startdev); 1813d54853efSMartin Schwidefsky return ERR_PTR(-EAGAIN); 1814d54853efSMartin Schwidefsky } 18158e09f215SStefan Weinhuber idaws = (unsigned long *) (cqr->data + 18168e09f215SStefan Weinhuber sizeof(struct PFX_eckd_data)); 18178e09f215SStefan Weinhuber } else { 18188e09f215SStefan Weinhuber if (define_extent(ccw++, cqr->data, first_trk, 18198e09f215SStefan Weinhuber last_trk, cmd, startdev) == -EAGAIN) { 18208e09f215SStefan Weinhuber /* Clock not in sync and XRC is enabled. 18218e09f215SStefan Weinhuber * Try again later. 18228e09f215SStefan Weinhuber */ 18238e09f215SStefan Weinhuber dasd_sfree_request(cqr, startdev); 18248e09f215SStefan Weinhuber return ERR_PTR(-EAGAIN); 18258e09f215SStefan Weinhuber } 18268e09f215SStefan Weinhuber idaws = (unsigned long *) (cqr->data + 18278e09f215SStefan Weinhuber sizeof(struct DE_eckd_data)); 18288e09f215SStefan Weinhuber } 18291da177e4SLinus Torvalds /* Build locate_record+read/write/ccws. */ 18301da177e4SLinus Torvalds LO_data = (struct LO_eckd_data *) (idaws + cidaw); 18311da177e4SLinus Torvalds recid = first_rec; 18321da177e4SLinus Torvalds if (private->uses_cdl == 0 || recid > 2*blk_per_trk) { 18331da177e4SLinus Torvalds /* Only standard blocks so there is just one locate record. */ 18341da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 18351da177e4SLinus Torvalds locate_record(ccw++, LO_data++, first_trk, first_offs + 1, 18368e09f215SStefan Weinhuber last_rec - recid + 1, cmd, basedev, blksize); 18371da177e4SLinus Torvalds } 18385705f702SNeilBrown rq_for_each_segment(bv, req, iter) { 18391da177e4SLinus Torvalds dst = page_address(bv->bv_page) + bv->bv_offset; 18401da177e4SLinus Torvalds if (dasd_page_cache) { 18411da177e4SLinus Torvalds char *copy = kmem_cache_alloc(dasd_page_cache, 1842441e143eSChristoph Lameter GFP_DMA | __GFP_NOWARN); 18431da177e4SLinus Torvalds if (copy && rq_data_dir(req) == WRITE) 18441da177e4SLinus Torvalds memcpy(copy + bv->bv_offset, dst, bv->bv_len); 18451da177e4SLinus Torvalds if (copy) 18461da177e4SLinus Torvalds dst = copy + bv->bv_offset; 18471da177e4SLinus Torvalds } 18481da177e4SLinus Torvalds for (off = 0; off < bv->bv_len; off += blksize) { 18491da177e4SLinus Torvalds sector_t trkid = recid; 18501da177e4SLinus Torvalds unsigned int recoffs = sector_div(trkid, blk_per_trk); 18511da177e4SLinus Torvalds rcmd = cmd; 18521da177e4SLinus Torvalds count = blksize; 18531da177e4SLinus Torvalds /* Locate record for cdl special block ? */ 18541da177e4SLinus Torvalds if (private->uses_cdl && recid < 2*blk_per_trk) { 18551da177e4SLinus Torvalds if (dasd_eckd_cdl_special(blk_per_trk, recid)){ 18561da177e4SLinus Torvalds rcmd |= 0x8; 18571da177e4SLinus Torvalds count = dasd_eckd_cdl_reclen(recid); 1858ec5883abSHorst Hummel if (count < blksize && 1859ec5883abSHorst Hummel rq_data_dir(req) == READ) 18601da177e4SLinus Torvalds memset(dst + count, 0xe5, 18611da177e4SLinus Torvalds blksize - count); 18621da177e4SLinus Torvalds } 18631da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 18641da177e4SLinus Torvalds locate_record(ccw++, LO_data++, 18651da177e4SLinus Torvalds trkid, recoffs + 1, 18668e09f215SStefan Weinhuber 1, rcmd, basedev, count); 18671da177e4SLinus Torvalds } 18681da177e4SLinus Torvalds /* Locate record for standard blocks ? */ 18691da177e4SLinus Torvalds if (private->uses_cdl && recid == 2*blk_per_trk) { 18701da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 18711da177e4SLinus Torvalds locate_record(ccw++, LO_data++, 18721da177e4SLinus Torvalds trkid, recoffs + 1, 18731da177e4SLinus Torvalds last_rec - recid + 1, 18748e09f215SStefan Weinhuber cmd, basedev, count); 18751da177e4SLinus Torvalds } 18761da177e4SLinus Torvalds /* Read/write ccw. */ 18771da177e4SLinus Torvalds ccw[-1].flags |= CCW_FLAG_CC; 18781da177e4SLinus Torvalds ccw->cmd_code = rcmd; 18791da177e4SLinus Torvalds ccw->count = count; 18801da177e4SLinus Torvalds if (idal_is_needed(dst, blksize)) { 18811da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) idaws; 18821da177e4SLinus Torvalds ccw->flags = CCW_FLAG_IDA; 18831da177e4SLinus Torvalds idaws = idal_create_words(idaws, dst, blksize); 18841da177e4SLinus Torvalds } else { 18851da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) dst; 18861da177e4SLinus Torvalds ccw->flags = 0; 18871da177e4SLinus Torvalds } 18881da177e4SLinus Torvalds ccw++; 18891da177e4SLinus Torvalds dst += blksize; 18901da177e4SLinus Torvalds recid++; 18911da177e4SLinus Torvalds } 18921da177e4SLinus Torvalds } 189313de227bSHolger Smolinski if (blk_noretry_request(req) || 189413de227bSHolger Smolinski block->base->features & DASD_FEATURE_FAILFAST) 18951c01b8a5SHorst Hummel set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); 18968e09f215SStefan Weinhuber cqr->startdev = startdev; 18978e09f215SStefan Weinhuber cqr->memdev = startdev; 18988e09f215SStefan Weinhuber cqr->block = block; 18991da177e4SLinus Torvalds cqr->expires = 5 * 60 * HZ; /* 5 minutes */ 19001da177e4SLinus Torvalds cqr->lpm = private->path_data.ppm; 19011da177e4SLinus Torvalds cqr->retries = 256; 19021da177e4SLinus Torvalds cqr->buildclk = get_clock(); 19031da177e4SLinus Torvalds cqr->status = DASD_CQR_FILLED; 19041da177e4SLinus Torvalds return cqr; 19051da177e4SLinus Torvalds } 19061da177e4SLinus Torvalds 1907f3eb5384SStefan Weinhuber static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track( 1908f3eb5384SStefan Weinhuber struct dasd_device *startdev, 1909f3eb5384SStefan Weinhuber struct dasd_block *block, 1910f3eb5384SStefan Weinhuber struct request *req, 1911f3eb5384SStefan Weinhuber sector_t first_rec, 1912f3eb5384SStefan Weinhuber sector_t last_rec, 1913f3eb5384SStefan Weinhuber sector_t first_trk, 1914f3eb5384SStefan Weinhuber sector_t last_trk, 1915f3eb5384SStefan Weinhuber unsigned int first_offs, 1916f3eb5384SStefan Weinhuber unsigned int last_offs, 1917f3eb5384SStefan Weinhuber unsigned int blk_per_trk, 1918f3eb5384SStefan Weinhuber unsigned int blksize) 1919f3eb5384SStefan Weinhuber { 1920f3eb5384SStefan Weinhuber struct dasd_eckd_private *private; 1921f3eb5384SStefan Weinhuber unsigned long *idaws; 1922f3eb5384SStefan Weinhuber struct dasd_ccw_req *cqr; 1923f3eb5384SStefan Weinhuber struct ccw1 *ccw; 1924f3eb5384SStefan Weinhuber struct req_iterator iter; 1925f3eb5384SStefan Weinhuber struct bio_vec *bv; 1926f3eb5384SStefan Weinhuber char *dst, *idaw_dst; 1927f3eb5384SStefan Weinhuber unsigned int cidaw, cplength, datasize; 1928f3eb5384SStefan Weinhuber unsigned int tlf; 1929f3eb5384SStefan Weinhuber sector_t recid; 1930f3eb5384SStefan Weinhuber unsigned char cmd; 1931f3eb5384SStefan Weinhuber struct dasd_device *basedev; 1932f3eb5384SStefan Weinhuber unsigned int trkcount, count, count_to_trk_end; 1933f3eb5384SStefan Weinhuber unsigned int idaw_len, seg_len, part_len, len_to_track_end; 1934f3eb5384SStefan Weinhuber unsigned char new_track, end_idaw; 1935f3eb5384SStefan Weinhuber sector_t trkid; 1936f3eb5384SStefan Weinhuber unsigned int recoffs; 1937f3eb5384SStefan Weinhuber 1938f3eb5384SStefan Weinhuber basedev = block->base; 1939f3eb5384SStefan Weinhuber private = (struct dasd_eckd_private *) basedev->private; 1940f3eb5384SStefan Weinhuber if (rq_data_dir(req) == READ) 1941f3eb5384SStefan Weinhuber cmd = DASD_ECKD_CCW_READ_TRACK_DATA; 1942f3eb5384SStefan Weinhuber else if (rq_data_dir(req) == WRITE) 1943f3eb5384SStefan Weinhuber cmd = DASD_ECKD_CCW_WRITE_TRACK_DATA; 1944f3eb5384SStefan Weinhuber else 1945f3eb5384SStefan Weinhuber return ERR_PTR(-EINVAL); 1946f3eb5384SStefan Weinhuber 1947f3eb5384SStefan Weinhuber /* Track based I/O needs IDAWs for each page, and not just for 1948f3eb5384SStefan Weinhuber * 64 bit addresses. We need additional idals for pages 1949f3eb5384SStefan Weinhuber * that get filled from two tracks, so we use the number 1950f3eb5384SStefan Weinhuber * of records as upper limit. 1951f3eb5384SStefan Weinhuber */ 1952f3eb5384SStefan Weinhuber cidaw = last_rec - first_rec + 1; 1953f3eb5384SStefan Weinhuber trkcount = last_trk - first_trk + 1; 1954f3eb5384SStefan Weinhuber 1955f3eb5384SStefan Weinhuber /* 1x prefix + one read/write ccw per track */ 1956f3eb5384SStefan Weinhuber cplength = 1 + trkcount; 1957f3eb5384SStefan Weinhuber 1958f3eb5384SStefan Weinhuber /* on 31-bit we need space for two 32 bit addresses per page 1959f3eb5384SStefan Weinhuber * on 64-bit one 64 bit address 1960f3eb5384SStefan Weinhuber */ 1961f3eb5384SStefan Weinhuber datasize = sizeof(struct PFX_eckd_data) + 1962f3eb5384SStefan Weinhuber cidaw * sizeof(unsigned long long); 1963f3eb5384SStefan Weinhuber 1964f3eb5384SStefan Weinhuber /* Allocate the ccw request. */ 1965f3eb5384SStefan Weinhuber cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 1966f3eb5384SStefan Weinhuber cplength, datasize, startdev); 1967f3eb5384SStefan Weinhuber if (IS_ERR(cqr)) 1968f3eb5384SStefan Weinhuber return cqr; 1969f3eb5384SStefan Weinhuber ccw = cqr->cpaddr; 1970f3eb5384SStefan Weinhuber /* transfer length factor: how many bytes to read from the last track */ 1971f3eb5384SStefan Weinhuber if (first_trk == last_trk) 1972f3eb5384SStefan Weinhuber tlf = last_offs - first_offs + 1; 1973f3eb5384SStefan Weinhuber else 1974f3eb5384SStefan Weinhuber tlf = last_offs + 1; 1975f3eb5384SStefan Weinhuber tlf *= blksize; 1976f3eb5384SStefan Weinhuber 1977f3eb5384SStefan Weinhuber if (prefix_LRE(ccw++, cqr->data, first_trk, 1978f3eb5384SStefan Weinhuber last_trk, cmd, basedev, startdev, 1979f3eb5384SStefan Weinhuber 1 /* format */, first_offs + 1, 1980f3eb5384SStefan Weinhuber trkcount, blksize, 1981f3eb5384SStefan Weinhuber tlf) == -EAGAIN) { 1982f3eb5384SStefan Weinhuber /* Clock not in sync and XRC is enabled. 1983f3eb5384SStefan Weinhuber * Try again later. 1984f3eb5384SStefan Weinhuber */ 1985f3eb5384SStefan Weinhuber dasd_sfree_request(cqr, startdev); 1986f3eb5384SStefan Weinhuber return ERR_PTR(-EAGAIN); 1987f3eb5384SStefan Weinhuber } 1988f3eb5384SStefan Weinhuber 1989f3eb5384SStefan Weinhuber /* 1990f3eb5384SStefan Weinhuber * The translation of request into ccw programs must meet the 1991f3eb5384SStefan Weinhuber * following conditions: 1992f3eb5384SStefan Weinhuber * - all idaws but the first and the last must address full pages 1993f3eb5384SStefan Weinhuber * (or 2K blocks on 31-bit) 1994f3eb5384SStefan Weinhuber * - the scope of a ccw and it's idal ends with the track boundaries 1995f3eb5384SStefan Weinhuber */ 1996f3eb5384SStefan Weinhuber idaws = (unsigned long *) (cqr->data + sizeof(struct PFX_eckd_data)); 1997f3eb5384SStefan Weinhuber recid = first_rec; 1998f3eb5384SStefan Weinhuber new_track = 1; 1999f3eb5384SStefan Weinhuber end_idaw = 0; 2000f3eb5384SStefan Weinhuber len_to_track_end = 0; 2001f3eb5384SStefan Weinhuber idaw_dst = 0; 2002f3eb5384SStefan Weinhuber idaw_len = 0; 2003f3eb5384SStefan Weinhuber rq_for_each_segment(bv, req, iter) { 2004f3eb5384SStefan Weinhuber dst = page_address(bv->bv_page) + bv->bv_offset; 2005f3eb5384SStefan Weinhuber seg_len = bv->bv_len; 2006f3eb5384SStefan Weinhuber while (seg_len) { 2007f3eb5384SStefan Weinhuber if (new_track) { 2008f3eb5384SStefan Weinhuber trkid = recid; 2009f3eb5384SStefan Weinhuber recoffs = sector_div(trkid, blk_per_trk); 2010f3eb5384SStefan Weinhuber count_to_trk_end = blk_per_trk - recoffs; 2011f3eb5384SStefan Weinhuber count = min((last_rec - recid + 1), 2012f3eb5384SStefan Weinhuber (sector_t)count_to_trk_end); 2013f3eb5384SStefan Weinhuber len_to_track_end = count * blksize; 2014f3eb5384SStefan Weinhuber ccw[-1].flags |= CCW_FLAG_CC; 2015f3eb5384SStefan Weinhuber ccw->cmd_code = cmd; 2016f3eb5384SStefan Weinhuber ccw->count = len_to_track_end; 2017f3eb5384SStefan Weinhuber ccw->cda = (__u32)(addr_t)idaws; 2018f3eb5384SStefan Weinhuber ccw->flags = CCW_FLAG_IDA; 2019f3eb5384SStefan Weinhuber ccw++; 2020f3eb5384SStefan Weinhuber recid += count; 2021f3eb5384SStefan Weinhuber new_track = 0; 2022f3eb5384SStefan Weinhuber } 2023f3eb5384SStefan Weinhuber /* If we start a new idaw, everything is fine and the 2024f3eb5384SStefan Weinhuber * start of the new idaw is the start of this segment. 2025f3eb5384SStefan Weinhuber * If we continue an idaw, we must make sure that the 2026f3eb5384SStefan Weinhuber * current segment begins where the so far accumulated 2027f3eb5384SStefan Weinhuber * idaw ends 2028f3eb5384SStefan Weinhuber */ 2029f3eb5384SStefan Weinhuber if (!idaw_dst) 2030f3eb5384SStefan Weinhuber idaw_dst = dst; 2031f3eb5384SStefan Weinhuber if ((idaw_dst + idaw_len) != dst) { 2032f3eb5384SStefan Weinhuber dasd_sfree_request(cqr, startdev); 2033f3eb5384SStefan Weinhuber return ERR_PTR(-ERANGE); 2034f3eb5384SStefan Weinhuber } 2035f3eb5384SStefan Weinhuber part_len = min(seg_len, len_to_track_end); 2036f3eb5384SStefan Weinhuber seg_len -= part_len; 2037f3eb5384SStefan Weinhuber dst += part_len; 2038f3eb5384SStefan Weinhuber idaw_len += part_len; 2039f3eb5384SStefan Weinhuber len_to_track_end -= part_len; 2040f3eb5384SStefan Weinhuber /* collected memory area ends on an IDA_BLOCK border, 2041f3eb5384SStefan Weinhuber * -> create an idaw 2042f3eb5384SStefan Weinhuber * idal_create_words will handle cases where idaw_len 2043f3eb5384SStefan Weinhuber * is larger then IDA_BLOCK_SIZE 2044f3eb5384SStefan Weinhuber */ 2045f3eb5384SStefan Weinhuber if (!(__pa(idaw_dst + idaw_len) & (IDA_BLOCK_SIZE-1))) 2046f3eb5384SStefan Weinhuber end_idaw = 1; 2047f3eb5384SStefan Weinhuber /* We also need to end the idaw at track end */ 2048f3eb5384SStefan Weinhuber if (!len_to_track_end) { 2049f3eb5384SStefan Weinhuber new_track = 1; 2050f3eb5384SStefan Weinhuber end_idaw = 1; 2051f3eb5384SStefan Weinhuber } 2052f3eb5384SStefan Weinhuber if (end_idaw) { 2053f3eb5384SStefan Weinhuber idaws = idal_create_words(idaws, idaw_dst, 2054f3eb5384SStefan Weinhuber idaw_len); 2055f3eb5384SStefan Weinhuber idaw_dst = 0; 2056f3eb5384SStefan Weinhuber idaw_len = 0; 2057f3eb5384SStefan Weinhuber end_idaw = 0; 2058f3eb5384SStefan Weinhuber } 2059f3eb5384SStefan Weinhuber } 2060f3eb5384SStefan Weinhuber } 2061f3eb5384SStefan Weinhuber 2062f3eb5384SStefan Weinhuber if (blk_noretry_request(req) || 2063f3eb5384SStefan Weinhuber block->base->features & DASD_FEATURE_FAILFAST) 2064f3eb5384SStefan Weinhuber set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); 2065f3eb5384SStefan Weinhuber cqr->startdev = startdev; 2066f3eb5384SStefan Weinhuber cqr->memdev = startdev; 2067f3eb5384SStefan Weinhuber cqr->block = block; 2068f3eb5384SStefan Weinhuber cqr->expires = 5 * 60 * HZ; /* 5 minutes */ 2069f3eb5384SStefan Weinhuber cqr->lpm = private->path_data.ppm; 2070f3eb5384SStefan Weinhuber cqr->retries = 256; 2071f3eb5384SStefan Weinhuber cqr->buildclk = get_clock(); 2072f3eb5384SStefan Weinhuber cqr->status = DASD_CQR_FILLED; 2073f3eb5384SStefan Weinhuber return cqr; 2074f3eb5384SStefan Weinhuber } 2075f3eb5384SStefan Weinhuber 2076f3eb5384SStefan Weinhuber static int prepare_itcw(struct itcw *itcw, 2077f3eb5384SStefan Weinhuber unsigned int trk, unsigned int totrk, int cmd, 2078f3eb5384SStefan Weinhuber struct dasd_device *basedev, 2079f3eb5384SStefan Weinhuber struct dasd_device *startdev, 2080f3eb5384SStefan Weinhuber unsigned int rec_on_trk, int count, 2081f3eb5384SStefan Weinhuber unsigned int blksize, 2082f3eb5384SStefan Weinhuber unsigned int total_data_size, 2083f3eb5384SStefan Weinhuber unsigned int tlf, 2084f3eb5384SStefan Weinhuber unsigned int blk_per_trk) 2085f3eb5384SStefan Weinhuber { 2086f3eb5384SStefan Weinhuber struct PFX_eckd_data pfxdata; 2087f3eb5384SStefan Weinhuber struct dasd_eckd_private *basepriv, *startpriv; 2088f3eb5384SStefan Weinhuber struct DE_eckd_data *dedata; 2089f3eb5384SStefan Weinhuber struct LRE_eckd_data *lredata; 2090f3eb5384SStefan Weinhuber struct dcw *dcw; 2091f3eb5384SStefan Weinhuber 2092f3eb5384SStefan Weinhuber u32 begcyl, endcyl; 2093f3eb5384SStefan Weinhuber u16 heads, beghead, endhead; 2094f3eb5384SStefan Weinhuber u8 pfx_cmd; 2095f3eb5384SStefan Weinhuber 2096f3eb5384SStefan Weinhuber int rc = 0; 2097f3eb5384SStefan Weinhuber int sector = 0; 2098f3eb5384SStefan Weinhuber int dn, d; 2099f3eb5384SStefan Weinhuber 2100f3eb5384SStefan Weinhuber 2101f3eb5384SStefan Weinhuber /* setup prefix data */ 2102f3eb5384SStefan Weinhuber basepriv = (struct dasd_eckd_private *) basedev->private; 2103f3eb5384SStefan Weinhuber startpriv = (struct dasd_eckd_private *) startdev->private; 2104f3eb5384SStefan Weinhuber dedata = &pfxdata.define_extent; 2105f3eb5384SStefan Weinhuber lredata = &pfxdata.locate_record; 2106f3eb5384SStefan Weinhuber 2107f3eb5384SStefan Weinhuber memset(&pfxdata, 0, sizeof(pfxdata)); 2108f3eb5384SStefan Weinhuber pfxdata.format = 1; /* PFX with LRE */ 2109f3eb5384SStefan Weinhuber pfxdata.base_address = basepriv->ned->unit_addr; 2110f3eb5384SStefan Weinhuber pfxdata.base_lss = basepriv->ned->ID; 2111f3eb5384SStefan Weinhuber pfxdata.validity.define_extent = 1; 2112f3eb5384SStefan Weinhuber 2113f3eb5384SStefan Weinhuber /* private uid is kept up to date, conf_data may be outdated */ 2114f3eb5384SStefan Weinhuber if (startpriv->uid.type != UA_BASE_DEVICE) { 2115f3eb5384SStefan Weinhuber pfxdata.validity.verify_base = 1; 2116f3eb5384SStefan Weinhuber if (startpriv->uid.type == UA_HYPER_PAV_ALIAS) 2117f3eb5384SStefan Weinhuber pfxdata.validity.hyper_pav = 1; 2118f3eb5384SStefan Weinhuber } 2119f3eb5384SStefan Weinhuber 2120f3eb5384SStefan Weinhuber switch (cmd) { 2121f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_READ_TRACK_DATA: 2122f3eb5384SStefan Weinhuber dedata->mask.perm = 0x1; 2123f3eb5384SStefan Weinhuber dedata->attributes.operation = basepriv->attrib.operation; 2124f3eb5384SStefan Weinhuber dedata->blk_size = blksize; 2125f3eb5384SStefan Weinhuber dedata->ga_extended |= 0x42; 2126f3eb5384SStefan Weinhuber lredata->operation.orientation = 0x0; 2127f3eb5384SStefan Weinhuber lredata->operation.operation = 0x0C; 2128f3eb5384SStefan Weinhuber lredata->auxiliary.check_bytes = 0x01; 2129f3eb5384SStefan Weinhuber pfx_cmd = DASD_ECKD_CCW_PFX_READ; 2130f3eb5384SStefan Weinhuber break; 2131f3eb5384SStefan Weinhuber case DASD_ECKD_CCW_WRITE_TRACK_DATA: 2132f3eb5384SStefan Weinhuber dedata->mask.perm = 0x02; 2133f3eb5384SStefan Weinhuber dedata->attributes.operation = basepriv->attrib.operation; 2134f3eb5384SStefan Weinhuber dedata->blk_size = blksize; 2135f3eb5384SStefan Weinhuber rc = check_XRC_on_prefix(&pfxdata, basedev); 2136f3eb5384SStefan Weinhuber dedata->ga_extended |= 0x42; 2137f3eb5384SStefan Weinhuber lredata->operation.orientation = 0x0; 2138f3eb5384SStefan Weinhuber lredata->operation.operation = 0x3F; 2139f3eb5384SStefan Weinhuber lredata->extended_operation = 0x23; 2140f3eb5384SStefan Weinhuber lredata->auxiliary.check_bytes = 0x2; 2141f3eb5384SStefan Weinhuber pfx_cmd = DASD_ECKD_CCW_PFX; 2142f3eb5384SStefan Weinhuber break; 2143f3eb5384SStefan Weinhuber default: 2144f3eb5384SStefan Weinhuber DBF_DEV_EVENT(DBF_ERR, basedev, 2145f3eb5384SStefan Weinhuber "prepare itcw, unknown opcode 0x%x", cmd); 2146f3eb5384SStefan Weinhuber BUG(); 2147f3eb5384SStefan Weinhuber break; 2148f3eb5384SStefan Weinhuber } 2149f3eb5384SStefan Weinhuber if (rc) 2150f3eb5384SStefan Weinhuber return rc; 2151f3eb5384SStefan Weinhuber 2152f3eb5384SStefan Weinhuber dedata->attributes.mode = 0x3; /* ECKD */ 2153f3eb5384SStefan Weinhuber 2154f3eb5384SStefan Weinhuber heads = basepriv->rdc_data.trk_per_cyl; 2155f3eb5384SStefan Weinhuber begcyl = trk / heads; 2156f3eb5384SStefan Weinhuber beghead = trk % heads; 2157f3eb5384SStefan Weinhuber endcyl = totrk / heads; 2158f3eb5384SStefan Weinhuber endhead = totrk % heads; 2159f3eb5384SStefan Weinhuber 2160f3eb5384SStefan Weinhuber /* check for sequential prestage - enhance cylinder range */ 2161f3eb5384SStefan Weinhuber if (dedata->attributes.operation == DASD_SEQ_PRESTAGE || 2162f3eb5384SStefan Weinhuber dedata->attributes.operation == DASD_SEQ_ACCESS) { 2163f3eb5384SStefan Weinhuber 2164f3eb5384SStefan Weinhuber if (endcyl + basepriv->attrib.nr_cyl < basepriv->real_cyl) 2165f3eb5384SStefan Weinhuber endcyl += basepriv->attrib.nr_cyl; 2166f3eb5384SStefan Weinhuber else 2167f3eb5384SStefan Weinhuber endcyl = (basepriv->real_cyl - 1); 2168f3eb5384SStefan Weinhuber } 2169f3eb5384SStefan Weinhuber 2170f3eb5384SStefan Weinhuber set_ch_t(&dedata->beg_ext, begcyl, beghead); 2171f3eb5384SStefan Weinhuber set_ch_t(&dedata->end_ext, endcyl, endhead); 2172f3eb5384SStefan Weinhuber 2173f3eb5384SStefan Weinhuber dedata->ep_format = 0x20; /* records per track is valid */ 2174f3eb5384SStefan Weinhuber dedata->ep_rec_per_track = blk_per_trk; 2175f3eb5384SStefan Weinhuber 2176f3eb5384SStefan Weinhuber if (rec_on_trk) { 2177f3eb5384SStefan Weinhuber switch (basepriv->rdc_data.dev_type) { 2178f3eb5384SStefan Weinhuber case 0x3390: 2179f3eb5384SStefan Weinhuber dn = ceil_quot(blksize + 6, 232); 2180f3eb5384SStefan Weinhuber d = 9 + ceil_quot(blksize + 6 * (dn + 1), 34); 2181f3eb5384SStefan Weinhuber sector = (49 + (rec_on_trk - 1) * (10 + d)) / 8; 2182f3eb5384SStefan Weinhuber break; 2183f3eb5384SStefan Weinhuber case 0x3380: 2184f3eb5384SStefan Weinhuber d = 7 + ceil_quot(blksize + 12, 32); 2185f3eb5384SStefan Weinhuber sector = (39 + (rec_on_trk - 1) * (8 + d)) / 7; 2186f3eb5384SStefan Weinhuber break; 2187f3eb5384SStefan Weinhuber } 2188f3eb5384SStefan Weinhuber } 2189f3eb5384SStefan Weinhuber 2190f3eb5384SStefan Weinhuber lredata->auxiliary.length_valid = 1; 2191f3eb5384SStefan Weinhuber lredata->auxiliary.length_scope = 1; 2192f3eb5384SStefan Weinhuber lredata->auxiliary.imbedded_ccw_valid = 1; 2193f3eb5384SStefan Weinhuber lredata->length = tlf; 2194f3eb5384SStefan Weinhuber lredata->imbedded_ccw = cmd; 2195f3eb5384SStefan Weinhuber lredata->count = count; 2196f3eb5384SStefan Weinhuber lredata->sector = sector; 2197f3eb5384SStefan Weinhuber set_ch_t(&lredata->seek_addr, begcyl, beghead); 2198f3eb5384SStefan Weinhuber lredata->search_arg.cyl = lredata->seek_addr.cyl; 2199f3eb5384SStefan Weinhuber lredata->search_arg.head = lredata->seek_addr.head; 2200f3eb5384SStefan Weinhuber lredata->search_arg.record = rec_on_trk; 2201f3eb5384SStefan Weinhuber 2202f3eb5384SStefan Weinhuber dcw = itcw_add_dcw(itcw, pfx_cmd, 0, 2203f3eb5384SStefan Weinhuber &pfxdata, sizeof(pfxdata), total_data_size); 2204f3eb5384SStefan Weinhuber 2205f3eb5384SStefan Weinhuber return rc; 2206f3eb5384SStefan Weinhuber } 2207f3eb5384SStefan Weinhuber 2208f3eb5384SStefan Weinhuber static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track( 2209f3eb5384SStefan Weinhuber struct dasd_device *startdev, 2210f3eb5384SStefan Weinhuber struct dasd_block *block, 2211f3eb5384SStefan Weinhuber struct request *req, 2212f3eb5384SStefan Weinhuber sector_t first_rec, 2213f3eb5384SStefan Weinhuber sector_t last_rec, 2214f3eb5384SStefan Weinhuber sector_t first_trk, 2215f3eb5384SStefan Weinhuber sector_t last_trk, 2216f3eb5384SStefan Weinhuber unsigned int first_offs, 2217f3eb5384SStefan Weinhuber unsigned int last_offs, 2218f3eb5384SStefan Weinhuber unsigned int blk_per_trk, 2219f3eb5384SStefan Weinhuber unsigned int blksize) 2220f3eb5384SStefan Weinhuber { 2221f3eb5384SStefan Weinhuber struct dasd_eckd_private *private; 2222f3eb5384SStefan Weinhuber struct dasd_ccw_req *cqr; 2223f3eb5384SStefan Weinhuber struct req_iterator iter; 2224f3eb5384SStefan Weinhuber struct bio_vec *bv; 2225f3eb5384SStefan Weinhuber char *dst; 2226f3eb5384SStefan Weinhuber unsigned int trkcount, ctidaw; 2227f3eb5384SStefan Weinhuber unsigned char cmd; 2228f3eb5384SStefan Weinhuber struct dasd_device *basedev; 2229f3eb5384SStefan Weinhuber unsigned int tlf; 2230f3eb5384SStefan Weinhuber struct itcw *itcw; 2231f3eb5384SStefan Weinhuber struct tidaw *last_tidaw = NULL; 2232f3eb5384SStefan Weinhuber int itcw_op; 2233f3eb5384SStefan Weinhuber size_t itcw_size; 2234f3eb5384SStefan Weinhuber 2235f3eb5384SStefan Weinhuber basedev = block->base; 2236f3eb5384SStefan Weinhuber private = (struct dasd_eckd_private *) basedev->private; 2237f3eb5384SStefan Weinhuber if (rq_data_dir(req) == READ) { 2238f3eb5384SStefan Weinhuber cmd = DASD_ECKD_CCW_READ_TRACK_DATA; 2239f3eb5384SStefan Weinhuber itcw_op = ITCW_OP_READ; 2240f3eb5384SStefan Weinhuber } else if (rq_data_dir(req) == WRITE) { 2241f3eb5384SStefan Weinhuber cmd = DASD_ECKD_CCW_WRITE_TRACK_DATA; 2242f3eb5384SStefan Weinhuber itcw_op = ITCW_OP_WRITE; 2243f3eb5384SStefan Weinhuber } else 2244f3eb5384SStefan Weinhuber return ERR_PTR(-EINVAL); 2245f3eb5384SStefan Weinhuber 2246f3eb5384SStefan Weinhuber /* trackbased I/O needs address all memory via TIDAWs, 2247f3eb5384SStefan Weinhuber * not just for 64 bit addresses. This allows us to map 2248f3eb5384SStefan Weinhuber * each segment directly to one tidaw. 2249f3eb5384SStefan Weinhuber */ 2250f3eb5384SStefan Weinhuber trkcount = last_trk - first_trk + 1; 2251f3eb5384SStefan Weinhuber ctidaw = 0; 2252f3eb5384SStefan Weinhuber rq_for_each_segment(bv, req, iter) { 2253f3eb5384SStefan Weinhuber ++ctidaw; 2254f3eb5384SStefan Weinhuber } 2255f3eb5384SStefan Weinhuber 2256f3eb5384SStefan Weinhuber /* Allocate the ccw request. */ 2257f3eb5384SStefan Weinhuber itcw_size = itcw_calc_size(0, ctidaw, 0); 2258f3eb5384SStefan Weinhuber cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 2259f3eb5384SStefan Weinhuber 0, itcw_size, startdev); 2260f3eb5384SStefan Weinhuber if (IS_ERR(cqr)) 2261f3eb5384SStefan Weinhuber return cqr; 2262f3eb5384SStefan Weinhuber 2263f3eb5384SStefan Weinhuber cqr->cpmode = 1; 2264f3eb5384SStefan Weinhuber cqr->startdev = startdev; 2265f3eb5384SStefan Weinhuber cqr->memdev = startdev; 2266f3eb5384SStefan Weinhuber cqr->block = block; 2267f3eb5384SStefan Weinhuber cqr->expires = 100*HZ; 2268f3eb5384SStefan Weinhuber cqr->buildclk = get_clock(); 2269f3eb5384SStefan Weinhuber cqr->status = DASD_CQR_FILLED; 2270f3eb5384SStefan Weinhuber cqr->retries = 10; 2271f3eb5384SStefan Weinhuber 2272f3eb5384SStefan Weinhuber /* transfer length factor: how many bytes to read from the last track */ 2273f3eb5384SStefan Weinhuber if (first_trk == last_trk) 2274f3eb5384SStefan Weinhuber tlf = last_offs - first_offs + 1; 2275f3eb5384SStefan Weinhuber else 2276f3eb5384SStefan Weinhuber tlf = last_offs + 1; 2277f3eb5384SStefan Weinhuber tlf *= blksize; 2278f3eb5384SStefan Weinhuber 2279f3eb5384SStefan Weinhuber itcw = itcw_init(cqr->data, itcw_size, itcw_op, 0, ctidaw, 0); 2280f3eb5384SStefan Weinhuber cqr->cpaddr = itcw_get_tcw(itcw); 2281f3eb5384SStefan Weinhuber 2282f3eb5384SStefan Weinhuber if (prepare_itcw(itcw, first_trk, last_trk, 2283f3eb5384SStefan Weinhuber cmd, basedev, startdev, 2284f3eb5384SStefan Weinhuber first_offs + 1, 2285f3eb5384SStefan Weinhuber trkcount, blksize, 2286f3eb5384SStefan Weinhuber (last_rec - first_rec + 1) * blksize, 2287f3eb5384SStefan Weinhuber tlf, blk_per_trk) == -EAGAIN) { 2288f3eb5384SStefan Weinhuber /* Clock not in sync and XRC is enabled. 2289f3eb5384SStefan Weinhuber * Try again later. 2290f3eb5384SStefan Weinhuber */ 2291f3eb5384SStefan Weinhuber dasd_sfree_request(cqr, startdev); 2292f3eb5384SStefan Weinhuber return ERR_PTR(-EAGAIN); 2293f3eb5384SStefan Weinhuber } 2294f3eb5384SStefan Weinhuber 2295f3eb5384SStefan Weinhuber /* 2296f3eb5384SStefan Weinhuber * A tidaw can address 4k of memory, but must not cross page boundaries 2297f3eb5384SStefan Weinhuber * We can let the block layer handle this by setting 2298f3eb5384SStefan Weinhuber * blk_queue_segment_boundary to page boundaries and 2299f3eb5384SStefan Weinhuber * blk_max_segment_size to page size when setting up the request queue. 2300f3eb5384SStefan Weinhuber */ 2301f3eb5384SStefan Weinhuber rq_for_each_segment(bv, req, iter) { 2302f3eb5384SStefan Weinhuber dst = page_address(bv->bv_page) + bv->bv_offset; 2303f3eb5384SStefan Weinhuber last_tidaw = itcw_add_tidaw(itcw, 0x00, dst, bv->bv_len); 2304f3eb5384SStefan Weinhuber if (IS_ERR(last_tidaw)) 2305f3eb5384SStefan Weinhuber return (struct dasd_ccw_req *)last_tidaw; 2306f3eb5384SStefan Weinhuber } 2307f3eb5384SStefan Weinhuber 2308f3eb5384SStefan Weinhuber last_tidaw->flags |= 0x80; 2309f3eb5384SStefan Weinhuber itcw_finalize(itcw); 2310f3eb5384SStefan Weinhuber 2311f3eb5384SStefan Weinhuber if (blk_noretry_request(req) || 2312f3eb5384SStefan Weinhuber block->base->features & DASD_FEATURE_FAILFAST) 2313f3eb5384SStefan Weinhuber set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); 2314f3eb5384SStefan Weinhuber cqr->startdev = startdev; 2315f3eb5384SStefan Weinhuber cqr->memdev = startdev; 2316f3eb5384SStefan Weinhuber cqr->block = block; 2317f3eb5384SStefan Weinhuber cqr->expires = 5 * 60 * HZ; /* 5 minutes */ 2318f3eb5384SStefan Weinhuber cqr->lpm = private->path_data.ppm; 2319f3eb5384SStefan Weinhuber cqr->retries = 256; 2320f3eb5384SStefan Weinhuber cqr->buildclk = get_clock(); 2321f3eb5384SStefan Weinhuber cqr->status = DASD_CQR_FILLED; 2322f3eb5384SStefan Weinhuber return cqr; 2323f3eb5384SStefan Weinhuber } 2324f3eb5384SStefan Weinhuber 2325f3eb5384SStefan Weinhuber static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev, 2326f3eb5384SStefan Weinhuber struct dasd_block *block, 2327f3eb5384SStefan Weinhuber struct request *req) 2328f3eb5384SStefan Weinhuber { 2329f3eb5384SStefan Weinhuber int tpm, cmdrtd, cmdwtd; 2330f3eb5384SStefan Weinhuber int use_prefix; 2331f3eb5384SStefan Weinhuber 2332f3eb5384SStefan Weinhuber struct dasd_eckd_private *private; 2333f3eb5384SStefan Weinhuber int fcx_in_css, fcx_in_gneq, fcx_in_features; 2334f3eb5384SStefan Weinhuber struct dasd_device *basedev; 2335f3eb5384SStefan Weinhuber sector_t first_rec, last_rec; 2336f3eb5384SStefan Weinhuber sector_t first_trk, last_trk; 2337f3eb5384SStefan Weinhuber unsigned int first_offs, last_offs; 2338f3eb5384SStefan Weinhuber unsigned int blk_per_trk, blksize; 2339f3eb5384SStefan Weinhuber int cdlspecial; 2340f3eb5384SStefan Weinhuber struct dasd_ccw_req *cqr; 2341f3eb5384SStefan Weinhuber 2342f3eb5384SStefan Weinhuber basedev = block->base; 2343f3eb5384SStefan Weinhuber private = (struct dasd_eckd_private *) basedev->private; 2344f3eb5384SStefan Weinhuber 2345f3eb5384SStefan Weinhuber /* Calculate number of blocks/records per track. */ 2346f3eb5384SStefan Weinhuber blksize = block->bp_block; 2347f3eb5384SStefan Weinhuber blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize); 2348f3eb5384SStefan Weinhuber /* Calculate record id of first and last block. */ 2349f3eb5384SStefan Weinhuber first_rec = first_trk = req->sector >> block->s2b_shift; 2350f3eb5384SStefan Weinhuber first_offs = sector_div(first_trk, blk_per_trk); 2351f3eb5384SStefan Weinhuber last_rec = last_trk = 2352f3eb5384SStefan Weinhuber (req->sector + req->nr_sectors - 1) >> block->s2b_shift; 2353f3eb5384SStefan Weinhuber last_offs = sector_div(last_trk, blk_per_trk); 2354f3eb5384SStefan Weinhuber cdlspecial = (private->uses_cdl && first_rec < 2*blk_per_trk); 2355f3eb5384SStefan Weinhuber 2356f3eb5384SStefan Weinhuber /* is transport mode supported ? */ 2357f3eb5384SStefan Weinhuber fcx_in_css = css_general_characteristics.fcx; 2358f3eb5384SStefan Weinhuber fcx_in_gneq = private->gneq->reserved2[7] & 0x04; 2359f3eb5384SStefan Weinhuber fcx_in_features = private->features.feature[40] & 0x80; 2360f3eb5384SStefan Weinhuber tpm = fcx_in_css && fcx_in_gneq && fcx_in_features; 2361f3eb5384SStefan Weinhuber 2362f3eb5384SStefan Weinhuber /* is read track data and write track data in command mode supported? */ 2363f3eb5384SStefan Weinhuber cmdrtd = private->features.feature[9] & 0x20; 2364f3eb5384SStefan Weinhuber cmdwtd = private->features.feature[12] & 0x40; 2365f3eb5384SStefan Weinhuber use_prefix = private->features.feature[8] & 0x01; 2366f3eb5384SStefan Weinhuber 2367f3eb5384SStefan Weinhuber cqr = NULL; 2368f3eb5384SStefan Weinhuber if (cdlspecial || dasd_page_cache) { 2369f3eb5384SStefan Weinhuber /* do nothing, just fall through to the cmd mode single case */ 2370f3eb5384SStefan Weinhuber } else if (!dasd_nofcx && tpm && (first_trk == last_trk)) { 2371f3eb5384SStefan Weinhuber cqr = dasd_eckd_build_cp_tpm_track(startdev, block, req, 2372f3eb5384SStefan Weinhuber first_rec, last_rec, 2373f3eb5384SStefan Weinhuber first_trk, last_trk, 2374f3eb5384SStefan Weinhuber first_offs, last_offs, 2375f3eb5384SStefan Weinhuber blk_per_trk, blksize); 2376f3eb5384SStefan Weinhuber if (IS_ERR(cqr) && PTR_ERR(cqr) != -EAGAIN) 2377f3eb5384SStefan Weinhuber cqr = NULL; 2378f3eb5384SStefan Weinhuber } else if (use_prefix && 2379f3eb5384SStefan Weinhuber (((rq_data_dir(req) == READ) && cmdrtd) || 2380f3eb5384SStefan Weinhuber ((rq_data_dir(req) == WRITE) && cmdwtd))) { 2381f3eb5384SStefan Weinhuber cqr = dasd_eckd_build_cp_cmd_track(startdev, block, req, 2382f3eb5384SStefan Weinhuber first_rec, last_rec, 2383f3eb5384SStefan Weinhuber first_trk, last_trk, 2384f3eb5384SStefan Weinhuber first_offs, last_offs, 2385f3eb5384SStefan Weinhuber blk_per_trk, blksize); 2386f3eb5384SStefan Weinhuber if (IS_ERR(cqr) && PTR_ERR(cqr) != -EAGAIN) 2387f3eb5384SStefan Weinhuber cqr = NULL; 2388f3eb5384SStefan Weinhuber } 2389f3eb5384SStefan Weinhuber if (!cqr) 2390f3eb5384SStefan Weinhuber cqr = dasd_eckd_build_cp_cmd_single(startdev, block, req, 2391f3eb5384SStefan Weinhuber first_rec, last_rec, 2392f3eb5384SStefan Weinhuber first_trk, last_trk, 2393f3eb5384SStefan Weinhuber first_offs, last_offs, 2394f3eb5384SStefan Weinhuber blk_per_trk, blksize); 2395f3eb5384SStefan Weinhuber return cqr; 2396f3eb5384SStefan Weinhuber } 2397f3eb5384SStefan Weinhuber 23981da177e4SLinus Torvalds static int 23991da177e4SLinus Torvalds dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req) 24001da177e4SLinus Torvalds { 24011da177e4SLinus Torvalds struct dasd_eckd_private *private; 24021da177e4SLinus Torvalds struct ccw1 *ccw; 24035705f702SNeilBrown struct req_iterator iter; 24041da177e4SLinus Torvalds struct bio_vec *bv; 24051da177e4SLinus Torvalds char *dst, *cda; 24061da177e4SLinus Torvalds unsigned int blksize, blk_per_trk, off; 24071da177e4SLinus Torvalds sector_t recid; 24085705f702SNeilBrown int status; 24091da177e4SLinus Torvalds 24101da177e4SLinus Torvalds if (!dasd_page_cache) 24111da177e4SLinus Torvalds goto out; 24128e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) cqr->block->base->private; 24138e09f215SStefan Weinhuber blksize = cqr->block->bp_block; 24141da177e4SLinus Torvalds blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize); 24158e09f215SStefan Weinhuber recid = req->sector >> cqr->block->s2b_shift; 24161da177e4SLinus Torvalds ccw = cqr->cpaddr; 24171da177e4SLinus Torvalds /* Skip over define extent & locate record. */ 24181da177e4SLinus Torvalds ccw++; 24191da177e4SLinus Torvalds if (private->uses_cdl == 0 || recid > 2*blk_per_trk) 24201da177e4SLinus Torvalds ccw++; 24215705f702SNeilBrown rq_for_each_segment(bv, req, iter) { 24221da177e4SLinus Torvalds dst = page_address(bv->bv_page) + bv->bv_offset; 24231da177e4SLinus Torvalds for (off = 0; off < bv->bv_len; off += blksize) { 24241da177e4SLinus Torvalds /* Skip locate record. */ 24251da177e4SLinus Torvalds if (private->uses_cdl && recid <= 2*blk_per_trk) 24261da177e4SLinus Torvalds ccw++; 24271da177e4SLinus Torvalds if (dst) { 24281da177e4SLinus Torvalds if (ccw->flags & CCW_FLAG_IDA) 24291da177e4SLinus Torvalds cda = *((char **)((addr_t) ccw->cda)); 24301da177e4SLinus Torvalds else 24311da177e4SLinus Torvalds cda = (char *)((addr_t) ccw->cda); 24321da177e4SLinus Torvalds if (dst != cda) { 24331da177e4SLinus Torvalds if (rq_data_dir(req) == READ) 24341da177e4SLinus Torvalds memcpy(dst, cda, bv->bv_len); 24351da177e4SLinus Torvalds kmem_cache_free(dasd_page_cache, 24361da177e4SLinus Torvalds (void *)((addr_t)cda & PAGE_MASK)); 24371da177e4SLinus Torvalds } 24381da177e4SLinus Torvalds dst = NULL; 24391da177e4SLinus Torvalds } 24401da177e4SLinus Torvalds ccw++; 24411da177e4SLinus Torvalds recid++; 24421da177e4SLinus Torvalds } 24431da177e4SLinus Torvalds } 24441da177e4SLinus Torvalds out: 24451da177e4SLinus Torvalds status = cqr->status == DASD_CQR_DONE; 24468e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 24471da177e4SLinus Torvalds return status; 24481da177e4SLinus Torvalds } 24491da177e4SLinus Torvalds 24508e09f215SStefan Weinhuber /* 2451f3eb5384SStefan Weinhuber * Modify ccw/tcw in cqr so it can be started on a base device. 24528e09f215SStefan Weinhuber * 24538e09f215SStefan Weinhuber * Note that this is not enough to restart the cqr! 24548e09f215SStefan Weinhuber * Either reset cqr->startdev as well (summary unit check handling) 24558e09f215SStefan Weinhuber * or restart via separate cqr (as in ERP handling). 24568e09f215SStefan Weinhuber */ 24578e09f215SStefan Weinhuber void dasd_eckd_reset_ccw_to_base_io(struct dasd_ccw_req *cqr) 24588e09f215SStefan Weinhuber { 24598e09f215SStefan Weinhuber struct ccw1 *ccw; 24608e09f215SStefan Weinhuber struct PFX_eckd_data *pfxdata; 2461f3eb5384SStefan Weinhuber struct tcw *tcw; 2462f3eb5384SStefan Weinhuber struct tccb *tccb; 2463f3eb5384SStefan Weinhuber struct dcw *dcw; 24648e09f215SStefan Weinhuber 2465f3eb5384SStefan Weinhuber if (cqr->cpmode == 1) { 2466f3eb5384SStefan Weinhuber tcw = cqr->cpaddr; 2467f3eb5384SStefan Weinhuber tccb = tcw_get_tccb(tcw); 2468f3eb5384SStefan Weinhuber dcw = (struct dcw *)&tccb->tca[0]; 2469f3eb5384SStefan Weinhuber pfxdata = (struct PFX_eckd_data *)&dcw->cd[0]; 2470f3eb5384SStefan Weinhuber pfxdata->validity.verify_base = 0; 2471f3eb5384SStefan Weinhuber pfxdata->validity.hyper_pav = 0; 2472f3eb5384SStefan Weinhuber } else { 24738e09f215SStefan Weinhuber ccw = cqr->cpaddr; 24748e09f215SStefan Weinhuber pfxdata = cqr->data; 24758e09f215SStefan Weinhuber if (ccw->cmd_code == DASD_ECKD_CCW_PFX) { 24768e09f215SStefan Weinhuber pfxdata->validity.verify_base = 0; 24778e09f215SStefan Weinhuber pfxdata->validity.hyper_pav = 0; 24788e09f215SStefan Weinhuber } 24798e09f215SStefan Weinhuber } 2480f3eb5384SStefan Weinhuber } 24818e09f215SStefan Weinhuber 24828e09f215SStefan Weinhuber #define DASD_ECKD_CHANQ_MAX_SIZE 4 24838e09f215SStefan Weinhuber 24848e09f215SStefan Weinhuber static struct dasd_ccw_req *dasd_eckd_build_alias_cp(struct dasd_device *base, 24858e09f215SStefan Weinhuber struct dasd_block *block, 24868e09f215SStefan Weinhuber struct request *req) 24878e09f215SStefan Weinhuber { 24888e09f215SStefan Weinhuber struct dasd_eckd_private *private; 24898e09f215SStefan Weinhuber struct dasd_device *startdev; 24908e09f215SStefan Weinhuber unsigned long flags; 24918e09f215SStefan Weinhuber struct dasd_ccw_req *cqr; 24928e09f215SStefan Weinhuber 24938e09f215SStefan Weinhuber startdev = dasd_alias_get_start_dev(base); 24948e09f215SStefan Weinhuber if (!startdev) 24958e09f215SStefan Weinhuber startdev = base; 24968e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) startdev->private; 24978e09f215SStefan Weinhuber if (private->count >= DASD_ECKD_CHANQ_MAX_SIZE) 24988e09f215SStefan Weinhuber return ERR_PTR(-EBUSY); 24998e09f215SStefan Weinhuber 25008e09f215SStefan Weinhuber spin_lock_irqsave(get_ccwdev_lock(startdev->cdev), flags); 25018e09f215SStefan Weinhuber private->count++; 25028e09f215SStefan Weinhuber cqr = dasd_eckd_build_cp(startdev, block, req); 25038e09f215SStefan Weinhuber if (IS_ERR(cqr)) 25048e09f215SStefan Weinhuber private->count--; 25058e09f215SStefan Weinhuber spin_unlock_irqrestore(get_ccwdev_lock(startdev->cdev), flags); 25068e09f215SStefan Weinhuber return cqr; 25078e09f215SStefan Weinhuber } 25088e09f215SStefan Weinhuber 25098e09f215SStefan Weinhuber static int dasd_eckd_free_alias_cp(struct dasd_ccw_req *cqr, 25108e09f215SStefan Weinhuber struct request *req) 25118e09f215SStefan Weinhuber { 25128e09f215SStefan Weinhuber struct dasd_eckd_private *private; 25138e09f215SStefan Weinhuber unsigned long flags; 25148e09f215SStefan Weinhuber 25158e09f215SStefan Weinhuber spin_lock_irqsave(get_ccwdev_lock(cqr->memdev->cdev), flags); 25168e09f215SStefan Weinhuber private = (struct dasd_eckd_private *) cqr->memdev->private; 25178e09f215SStefan Weinhuber private->count--; 25188e09f215SStefan Weinhuber spin_unlock_irqrestore(get_ccwdev_lock(cqr->memdev->cdev), flags); 25198e09f215SStefan Weinhuber return dasd_eckd_free_cp(cqr, req); 25208e09f215SStefan Weinhuber } 25218e09f215SStefan Weinhuber 25221da177e4SLinus Torvalds static int 25231da177e4SLinus Torvalds dasd_eckd_fill_info(struct dasd_device * device, 25241da177e4SLinus Torvalds struct dasd_information2_t * info) 25251da177e4SLinus Torvalds { 25261da177e4SLinus Torvalds struct dasd_eckd_private *private; 25271da177e4SLinus Torvalds 25281da177e4SLinus Torvalds private = (struct dasd_eckd_private *) device->private; 25291da177e4SLinus Torvalds info->label_block = 2; 25301da177e4SLinus Torvalds info->FBA_layout = private->uses_cdl ? 0 : 1; 25311da177e4SLinus Torvalds info->format = private->uses_cdl ? DASD_FORMAT_CDL : DASD_FORMAT_LDL; 25321da177e4SLinus Torvalds info->characteristics_size = sizeof(struct dasd_eckd_characteristics); 25331da177e4SLinus Torvalds memcpy(info->characteristics, &private->rdc_data, 25341da177e4SLinus Torvalds sizeof(struct dasd_eckd_characteristics)); 25354abb08c2SStefan Weinhuber info->confdata_size = min((unsigned long)private->conf_len, 25364abb08c2SStefan Weinhuber sizeof(info->configuration_data)); 25374abb08c2SStefan Weinhuber memcpy(info->configuration_data, private->conf_data, 25384abb08c2SStefan Weinhuber info->confdata_size); 25391da177e4SLinus Torvalds return 0; 25401da177e4SLinus Torvalds } 25411da177e4SLinus Torvalds 25421da177e4SLinus Torvalds /* 25431da177e4SLinus Torvalds * SECTION: ioctl functions for eckd devices. 25441da177e4SLinus Torvalds */ 25451da177e4SLinus Torvalds 25461da177e4SLinus Torvalds /* 25471da177e4SLinus Torvalds * Release device ioctl. 25481da177e4SLinus Torvalds * Buils a channel programm to releases a prior reserved 25491da177e4SLinus Torvalds * (see dasd_eckd_reserve) device. 25501da177e4SLinus Torvalds */ 25511da177e4SLinus Torvalds static int 25521107ccfbSChristoph Hellwig dasd_eckd_release(struct dasd_device *device) 25531da177e4SLinus Torvalds { 25541da177e4SLinus Torvalds struct dasd_ccw_req *cqr; 25551da177e4SLinus Torvalds int rc; 2556f3eb5384SStefan Weinhuber struct ccw1 *ccw; 25571da177e4SLinus Torvalds 25581da177e4SLinus Torvalds if (!capable(CAP_SYS_ADMIN)) 25591da177e4SLinus Torvalds return -EACCES; 25601da177e4SLinus Torvalds 25611da177e4SLinus Torvalds cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 25621da177e4SLinus Torvalds 1, 32, device); 25631da177e4SLinus Torvalds if (IS_ERR(cqr)) { 2564fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 25651da177e4SLinus Torvalds "Could not allocate initialization request"); 25661da177e4SLinus Torvalds return PTR_ERR(cqr); 25671da177e4SLinus Torvalds } 2568f3eb5384SStefan Weinhuber ccw = cqr->cpaddr; 2569f3eb5384SStefan Weinhuber ccw->cmd_code = DASD_ECKD_CCW_RELEASE; 2570f3eb5384SStefan Weinhuber ccw->flags |= CCW_FLAG_SLI; 2571f3eb5384SStefan Weinhuber ccw->count = 32; 2572f3eb5384SStefan Weinhuber ccw->cda = (__u32)(addr_t) cqr->data; 25738e09f215SStefan Weinhuber cqr->startdev = device; 25748e09f215SStefan Weinhuber cqr->memdev = device; 25751da177e4SLinus Torvalds clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); 25761c01b8a5SHorst Hummel set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); 2577336c340bSHorst Hummel cqr->retries = 2; /* set retry counter to enable basic ERP */ 25781da177e4SLinus Torvalds cqr->expires = 2 * HZ; 25791da177e4SLinus Torvalds cqr->buildclk = get_clock(); 25801da177e4SLinus Torvalds cqr->status = DASD_CQR_FILLED; 25811da177e4SLinus Torvalds 25821da177e4SLinus Torvalds rc = dasd_sleep_on_immediatly(cqr); 25831da177e4SLinus Torvalds 25848e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 25851da177e4SLinus Torvalds return rc; 25861da177e4SLinus Torvalds } 25871da177e4SLinus Torvalds 25881da177e4SLinus Torvalds /* 25891da177e4SLinus Torvalds * Reserve device ioctl. 25901da177e4SLinus Torvalds * Options are set to 'synchronous wait for interrupt' and 25911da177e4SLinus Torvalds * 'timeout the request'. This leads to a terminate IO if 25921da177e4SLinus Torvalds * the interrupt is outstanding for a certain time. 25931da177e4SLinus Torvalds */ 25941da177e4SLinus Torvalds static int 25951107ccfbSChristoph Hellwig dasd_eckd_reserve(struct dasd_device *device) 25961da177e4SLinus Torvalds { 25971da177e4SLinus Torvalds struct dasd_ccw_req *cqr; 25981da177e4SLinus Torvalds int rc; 2599f3eb5384SStefan Weinhuber struct ccw1 *ccw; 26001da177e4SLinus Torvalds 26011da177e4SLinus Torvalds if (!capable(CAP_SYS_ADMIN)) 26021da177e4SLinus Torvalds return -EACCES; 26031da177e4SLinus Torvalds 26041da177e4SLinus Torvalds cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 26051da177e4SLinus Torvalds 1, 32, device); 26061da177e4SLinus Torvalds if (IS_ERR(cqr)) { 2607fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 26081da177e4SLinus Torvalds "Could not allocate initialization request"); 26091da177e4SLinus Torvalds return PTR_ERR(cqr); 26101da177e4SLinus Torvalds } 2611f3eb5384SStefan Weinhuber ccw = cqr->cpaddr; 2612f3eb5384SStefan Weinhuber ccw->cmd_code = DASD_ECKD_CCW_RESERVE; 2613f3eb5384SStefan Weinhuber ccw->flags |= CCW_FLAG_SLI; 2614f3eb5384SStefan Weinhuber ccw->count = 32; 2615f3eb5384SStefan Weinhuber ccw->cda = (__u32)(addr_t) cqr->data; 26168e09f215SStefan Weinhuber cqr->startdev = device; 26178e09f215SStefan Weinhuber cqr->memdev = device; 26181da177e4SLinus Torvalds clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); 26191c01b8a5SHorst Hummel set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); 2620336c340bSHorst Hummel cqr->retries = 2; /* set retry counter to enable basic ERP */ 26211da177e4SLinus Torvalds cqr->expires = 2 * HZ; 26221da177e4SLinus Torvalds cqr->buildclk = get_clock(); 26231da177e4SLinus Torvalds cqr->status = DASD_CQR_FILLED; 26241da177e4SLinus Torvalds 26251da177e4SLinus Torvalds rc = dasd_sleep_on_immediatly(cqr); 26261da177e4SLinus Torvalds 26278e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 26281da177e4SLinus Torvalds return rc; 26291da177e4SLinus Torvalds } 26301da177e4SLinus Torvalds 26311da177e4SLinus Torvalds /* 26321da177e4SLinus Torvalds * Steal lock ioctl - unconditional reserve device. 26331da177e4SLinus Torvalds * Buils a channel programm to break a device's reservation. 26341da177e4SLinus Torvalds * (unconditional reserve) 26351da177e4SLinus Torvalds */ 26361da177e4SLinus Torvalds static int 26371107ccfbSChristoph Hellwig dasd_eckd_steal_lock(struct dasd_device *device) 26381da177e4SLinus Torvalds { 26391da177e4SLinus Torvalds struct dasd_ccw_req *cqr; 26401da177e4SLinus Torvalds int rc; 2641f3eb5384SStefan Weinhuber struct ccw1 *ccw; 26421da177e4SLinus Torvalds 26431da177e4SLinus Torvalds if (!capable(CAP_SYS_ADMIN)) 26441da177e4SLinus Torvalds return -EACCES; 26451da177e4SLinus Torvalds 26461da177e4SLinus Torvalds cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 26471da177e4SLinus Torvalds 1, 32, device); 26481da177e4SLinus Torvalds if (IS_ERR(cqr)) { 2649fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 26501da177e4SLinus Torvalds "Could not allocate initialization request"); 26511da177e4SLinus Torvalds return PTR_ERR(cqr); 26521da177e4SLinus Torvalds } 2653f3eb5384SStefan Weinhuber ccw = cqr->cpaddr; 2654f3eb5384SStefan Weinhuber ccw->cmd_code = DASD_ECKD_CCW_SLCK; 2655f3eb5384SStefan Weinhuber ccw->flags |= CCW_FLAG_SLI; 2656f3eb5384SStefan Weinhuber ccw->count = 32; 2657f3eb5384SStefan Weinhuber ccw->cda = (__u32)(addr_t) cqr->data; 26588e09f215SStefan Weinhuber cqr->startdev = device; 26598e09f215SStefan Weinhuber cqr->memdev = device; 26601da177e4SLinus Torvalds clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags); 26611c01b8a5SHorst Hummel set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); 2662336c340bSHorst Hummel cqr->retries = 2; /* set retry counter to enable basic ERP */ 26631da177e4SLinus Torvalds cqr->expires = 2 * HZ; 26641da177e4SLinus Torvalds cqr->buildclk = get_clock(); 26651da177e4SLinus Torvalds cqr->status = DASD_CQR_FILLED; 26661da177e4SLinus Torvalds 26671da177e4SLinus Torvalds rc = dasd_sleep_on_immediatly(cqr); 26681da177e4SLinus Torvalds 26698e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 26701da177e4SLinus Torvalds return rc; 26711da177e4SLinus Torvalds } 26721da177e4SLinus Torvalds 26731da177e4SLinus Torvalds /* 26741da177e4SLinus Torvalds * Read performance statistics 26751da177e4SLinus Torvalds */ 26761da177e4SLinus Torvalds static int 26771107ccfbSChristoph Hellwig dasd_eckd_performance(struct dasd_device *device, void __user *argp) 26781da177e4SLinus Torvalds { 26791da177e4SLinus Torvalds struct dasd_psf_prssd_data *prssdp; 26801da177e4SLinus Torvalds struct dasd_rssd_perf_stats_t *stats; 26811da177e4SLinus Torvalds struct dasd_ccw_req *cqr; 26821da177e4SLinus Torvalds struct ccw1 *ccw; 26831da177e4SLinus Torvalds int rc; 26841da177e4SLinus Torvalds 26851da177e4SLinus Torvalds cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 26861da177e4SLinus Torvalds 1 /* PSF */ + 1 /* RSSD */ , 26871da177e4SLinus Torvalds (sizeof(struct dasd_psf_prssd_data) + 26881da177e4SLinus Torvalds sizeof(struct dasd_rssd_perf_stats_t)), 26891da177e4SLinus Torvalds device); 26901da177e4SLinus Torvalds if (IS_ERR(cqr)) { 2691fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 26921da177e4SLinus Torvalds "Could not allocate initialization request"); 26931da177e4SLinus Torvalds return PTR_ERR(cqr); 26941da177e4SLinus Torvalds } 26958e09f215SStefan Weinhuber cqr->startdev = device; 26968e09f215SStefan Weinhuber cqr->memdev = device; 26971da177e4SLinus Torvalds cqr->retries = 0; 26981da177e4SLinus Torvalds cqr->expires = 10 * HZ; 26991da177e4SLinus Torvalds 27001da177e4SLinus Torvalds /* Prepare for Read Subsystem Data */ 27011da177e4SLinus Torvalds prssdp = (struct dasd_psf_prssd_data *) cqr->data; 27021da177e4SLinus Torvalds memset(prssdp, 0, sizeof(struct dasd_psf_prssd_data)); 27031da177e4SLinus Torvalds prssdp->order = PSF_ORDER_PRSSD; 27045d67d164SJoe Perches prssdp->suborder = 0x01; /* Performance Statistics */ 27051da177e4SLinus Torvalds prssdp->varies[1] = 0x01; /* Perf Statistics for the Subsystem */ 27061da177e4SLinus Torvalds 27071da177e4SLinus Torvalds ccw = cqr->cpaddr; 27081da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_PSF; 27091da177e4SLinus Torvalds ccw->count = sizeof(struct dasd_psf_prssd_data); 27101da177e4SLinus Torvalds ccw->flags |= CCW_FLAG_CC; 27111da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) prssdp; 27121da177e4SLinus Torvalds 27131da177e4SLinus Torvalds /* Read Subsystem Data - Performance Statistics */ 27141da177e4SLinus Torvalds stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1); 27151da177e4SLinus Torvalds memset(stats, 0, sizeof(struct dasd_rssd_perf_stats_t)); 27161da177e4SLinus Torvalds 27171da177e4SLinus Torvalds ccw++; 27181da177e4SLinus Torvalds ccw->cmd_code = DASD_ECKD_CCW_RSSD; 27191da177e4SLinus Torvalds ccw->count = sizeof(struct dasd_rssd_perf_stats_t); 27201da177e4SLinus Torvalds ccw->cda = (__u32)(addr_t) stats; 27211da177e4SLinus Torvalds 27221da177e4SLinus Torvalds cqr->buildclk = get_clock(); 27231da177e4SLinus Torvalds cqr->status = DASD_CQR_FILLED; 27241da177e4SLinus Torvalds rc = dasd_sleep_on(cqr); 27251da177e4SLinus Torvalds if (rc == 0) { 27261da177e4SLinus Torvalds prssdp = (struct dasd_psf_prssd_data *) cqr->data; 27271da177e4SLinus Torvalds stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1); 27281107ccfbSChristoph Hellwig if (copy_to_user(argp, stats, 27291107ccfbSChristoph Hellwig sizeof(struct dasd_rssd_perf_stats_t))) 27301107ccfbSChristoph Hellwig rc = -EFAULT; 27311da177e4SLinus Torvalds } 27328e09f215SStefan Weinhuber dasd_sfree_request(cqr, cqr->memdev); 27331da177e4SLinus Torvalds return rc; 27341da177e4SLinus Torvalds } 27351da177e4SLinus Torvalds 27361da177e4SLinus Torvalds /* 27371da177e4SLinus Torvalds * Get attributes (cache operations) 27381da177e4SLinus Torvalds * Returnes the cache attributes used in Define Extend (DE). 27391da177e4SLinus Torvalds */ 27401da177e4SLinus Torvalds static int 27411107ccfbSChristoph Hellwig dasd_eckd_get_attrib(struct dasd_device *device, void __user *argp) 27421da177e4SLinus Torvalds { 27431107ccfbSChristoph Hellwig struct dasd_eckd_private *private = 27441107ccfbSChristoph Hellwig (struct dasd_eckd_private *)device->private; 27451107ccfbSChristoph Hellwig struct attrib_data_t attrib = private->attrib; 27461da177e4SLinus Torvalds int rc; 27471da177e4SLinus Torvalds 27481da177e4SLinus Torvalds if (!capable(CAP_SYS_ADMIN)) 27491da177e4SLinus Torvalds return -EACCES; 27501107ccfbSChristoph Hellwig if (!argp) 27511da177e4SLinus Torvalds return -EINVAL; 27521da177e4SLinus Torvalds 27531107ccfbSChristoph Hellwig rc = 0; 27541107ccfbSChristoph Hellwig if (copy_to_user(argp, (long *) &attrib, 27551107ccfbSChristoph Hellwig sizeof(struct attrib_data_t))) 27561107ccfbSChristoph Hellwig rc = -EFAULT; 27571da177e4SLinus Torvalds 27581da177e4SLinus Torvalds return rc; 27591da177e4SLinus Torvalds } 27601da177e4SLinus Torvalds 27611da177e4SLinus Torvalds /* 27621da177e4SLinus Torvalds * Set attributes (cache operations) 27631da177e4SLinus Torvalds * Stores the attributes for cache operation to be used in Define Extend (DE). 27641da177e4SLinus Torvalds */ 27651da177e4SLinus Torvalds static int 27661107ccfbSChristoph Hellwig dasd_eckd_set_attrib(struct dasd_device *device, void __user *argp) 27671da177e4SLinus Torvalds { 27681107ccfbSChristoph Hellwig struct dasd_eckd_private *private = 27691107ccfbSChristoph Hellwig (struct dasd_eckd_private *)device->private; 27701da177e4SLinus Torvalds struct attrib_data_t attrib; 27711da177e4SLinus Torvalds 27721da177e4SLinus Torvalds if (!capable(CAP_SYS_ADMIN)) 27731da177e4SLinus Torvalds return -EACCES; 27741107ccfbSChristoph Hellwig if (!argp) 27751da177e4SLinus Torvalds return -EINVAL; 27761da177e4SLinus Torvalds 27771107ccfbSChristoph Hellwig if (copy_from_user(&attrib, argp, sizeof(struct attrib_data_t))) 27781da177e4SLinus Torvalds return -EFAULT; 27791da177e4SLinus Torvalds private->attrib = attrib; 27801da177e4SLinus Torvalds 2781fc19f381SStefan Haberland dev_info(&device->cdev->dev, 2782fc19f381SStefan Haberland "The DASD cache mode was set to %x (%i cylinder prestage)\n", 27831da177e4SLinus Torvalds private->attrib.operation, private->attrib.nr_cyl); 27841da177e4SLinus Torvalds return 0; 27851da177e4SLinus Torvalds } 27861da177e4SLinus Torvalds 2787ab1d848fSNigel Hislop /* 2788ab1d848fSNigel Hislop * Issue syscall I/O to EMC Symmetrix array. 2789ab1d848fSNigel Hislop * CCWs are PSF and RSSD 2790ab1d848fSNigel Hislop */ 2791ab1d848fSNigel Hislop static int dasd_symm_io(struct dasd_device *device, void __user *argp) 2792ab1d848fSNigel Hislop { 2793ab1d848fSNigel Hislop struct dasd_symmio_parms usrparm; 2794ab1d848fSNigel Hislop char *psf_data, *rssd_result; 2795ab1d848fSNigel Hislop struct dasd_ccw_req *cqr; 2796ab1d848fSNigel Hislop struct ccw1 *ccw; 2797ab1d848fSNigel Hislop int rc; 2798ab1d848fSNigel Hislop 2799ab1d848fSNigel Hislop /* Copy parms from caller */ 2800ab1d848fSNigel Hislop rc = -EFAULT; 2801ab1d848fSNigel Hislop if (copy_from_user(&usrparm, argp, sizeof(usrparm))) 2802ab1d848fSNigel Hislop goto out; 2803ab1d848fSNigel Hislop #ifndef CONFIG_64BIT 2804ab1d848fSNigel Hislop /* Make sure pointers are sane even on 31 bit. */ 2805ab1d848fSNigel Hislop if ((usrparm.psf_data >> 32) != 0 || (usrparm.rssd_result >> 32) != 0) { 2806ab1d848fSNigel Hislop rc = -EINVAL; 2807ab1d848fSNigel Hislop goto out; 2808ab1d848fSNigel Hislop } 2809ab1d848fSNigel Hislop #endif 2810ab1d848fSNigel Hislop /* alloc I/O data area */ 2811ab1d848fSNigel Hislop psf_data = kzalloc(usrparm.psf_data_len, GFP_KERNEL | GFP_DMA); 2812ab1d848fSNigel Hislop rssd_result = kzalloc(usrparm.rssd_result_len, GFP_KERNEL | GFP_DMA); 2813ab1d848fSNigel Hislop if (!psf_data || !rssd_result) { 2814ab1d848fSNigel Hislop rc = -ENOMEM; 2815ab1d848fSNigel Hislop goto out_free; 2816ab1d848fSNigel Hislop } 2817ab1d848fSNigel Hislop 2818ab1d848fSNigel Hislop /* get syscall header from user space */ 2819ab1d848fSNigel Hislop rc = -EFAULT; 2820ab1d848fSNigel Hislop if (copy_from_user(psf_data, 2821ab1d848fSNigel Hislop (void __user *)(unsigned long) usrparm.psf_data, 2822ab1d848fSNigel Hislop usrparm.psf_data_len)) 2823ab1d848fSNigel Hislop goto out_free; 2824ab1d848fSNigel Hislop 2825ab1d848fSNigel Hislop /* sanity check on syscall header */ 2826ab1d848fSNigel Hislop if (psf_data[0] != 0x17 && psf_data[1] != 0xce) { 2827ab1d848fSNigel Hislop rc = -EINVAL; 2828ab1d848fSNigel Hislop goto out_free; 2829ab1d848fSNigel Hislop } 2830ab1d848fSNigel Hislop 2831ab1d848fSNigel Hislop /* setup CCWs for PSF + RSSD */ 2832ab1d848fSNigel Hislop cqr = dasd_smalloc_request("ECKD", 2 , 0, device); 2833ab1d848fSNigel Hislop if (IS_ERR(cqr)) { 2834fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 2835ab1d848fSNigel Hislop "Could not allocate initialization request"); 2836ab1d848fSNigel Hislop rc = PTR_ERR(cqr); 2837ab1d848fSNigel Hislop goto out_free; 2838ab1d848fSNigel Hislop } 2839ab1d848fSNigel Hislop 2840ab1d848fSNigel Hislop cqr->startdev = device; 2841ab1d848fSNigel Hislop cqr->memdev = device; 2842ab1d848fSNigel Hislop cqr->retries = 3; 2843ab1d848fSNigel Hislop cqr->expires = 10 * HZ; 2844ab1d848fSNigel Hislop cqr->buildclk = get_clock(); 2845ab1d848fSNigel Hislop cqr->status = DASD_CQR_FILLED; 2846ab1d848fSNigel Hislop 2847ab1d848fSNigel Hislop /* Build the ccws */ 2848ab1d848fSNigel Hislop ccw = cqr->cpaddr; 2849ab1d848fSNigel Hislop 2850ab1d848fSNigel Hislop /* PSF ccw */ 2851ab1d848fSNigel Hislop ccw->cmd_code = DASD_ECKD_CCW_PSF; 2852ab1d848fSNigel Hislop ccw->count = usrparm.psf_data_len; 2853ab1d848fSNigel Hislop ccw->flags |= CCW_FLAG_CC; 2854ab1d848fSNigel Hislop ccw->cda = (__u32)(addr_t) psf_data; 2855ab1d848fSNigel Hislop 2856ab1d848fSNigel Hislop ccw++; 2857ab1d848fSNigel Hislop 2858ab1d848fSNigel Hislop /* RSSD ccw */ 2859ab1d848fSNigel Hislop ccw->cmd_code = DASD_ECKD_CCW_RSSD; 2860ab1d848fSNigel Hislop ccw->count = usrparm.rssd_result_len; 2861ab1d848fSNigel Hislop ccw->flags = CCW_FLAG_SLI ; 2862ab1d848fSNigel Hislop ccw->cda = (__u32)(addr_t) rssd_result; 2863ab1d848fSNigel Hislop 2864ab1d848fSNigel Hislop rc = dasd_sleep_on(cqr); 2865ab1d848fSNigel Hislop if (rc) 2866ab1d848fSNigel Hislop goto out_sfree; 2867ab1d848fSNigel Hislop 2868ab1d848fSNigel Hislop rc = -EFAULT; 2869ab1d848fSNigel Hislop if (copy_to_user((void __user *)(unsigned long) usrparm.rssd_result, 2870ab1d848fSNigel Hislop rssd_result, usrparm.rssd_result_len)) 2871ab1d848fSNigel Hislop goto out_sfree; 2872ab1d848fSNigel Hislop rc = 0; 2873ab1d848fSNigel Hislop 2874ab1d848fSNigel Hislop out_sfree: 2875ab1d848fSNigel Hislop dasd_sfree_request(cqr, cqr->memdev); 2876ab1d848fSNigel Hislop out_free: 2877ab1d848fSNigel Hislop kfree(rssd_result); 2878ab1d848fSNigel Hislop kfree(psf_data); 2879ab1d848fSNigel Hislop out: 2880ab1d848fSNigel Hislop DBF_DEV_EVENT(DBF_WARNING, device, "Symmetrix ioctl: rc=%d", rc); 2881ab1d848fSNigel Hislop return rc; 2882ab1d848fSNigel Hislop } 2883ab1d848fSNigel Hislop 28841107ccfbSChristoph Hellwig static int 28858e09f215SStefan Weinhuber dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp) 28861107ccfbSChristoph Hellwig { 28878e09f215SStefan Weinhuber struct dasd_device *device = block->base; 28888e09f215SStefan Weinhuber 28891107ccfbSChristoph Hellwig switch (cmd) { 28901107ccfbSChristoph Hellwig case BIODASDGATTR: 28911107ccfbSChristoph Hellwig return dasd_eckd_get_attrib(device, argp); 28921107ccfbSChristoph Hellwig case BIODASDSATTR: 28931107ccfbSChristoph Hellwig return dasd_eckd_set_attrib(device, argp); 28941107ccfbSChristoph Hellwig case BIODASDPSRD: 28951107ccfbSChristoph Hellwig return dasd_eckd_performance(device, argp); 28961107ccfbSChristoph Hellwig case BIODASDRLSE: 28971107ccfbSChristoph Hellwig return dasd_eckd_release(device); 28981107ccfbSChristoph Hellwig case BIODASDRSRV: 28991107ccfbSChristoph Hellwig return dasd_eckd_reserve(device); 29001107ccfbSChristoph Hellwig case BIODASDSLCK: 29011107ccfbSChristoph Hellwig return dasd_eckd_steal_lock(device); 2902ab1d848fSNigel Hislop case BIODASDSYMMIO: 2903ab1d848fSNigel Hislop return dasd_symm_io(device, argp); 29041107ccfbSChristoph Hellwig default: 29051107ccfbSChristoph Hellwig return -ENOIOCTLCMD; 29061107ccfbSChristoph Hellwig } 29071107ccfbSChristoph Hellwig } 29081107ccfbSChristoph Hellwig 29091da177e4SLinus Torvalds /* 2910445b5b49SHorst Hummel * Dump the range of CCWs into 'page' buffer 2911445b5b49SHorst Hummel * and return number of printed chars. 2912445b5b49SHorst Hummel */ 29134d284cacSHeiko Carstens static int 2914445b5b49SHorst Hummel dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page) 2915445b5b49SHorst Hummel { 2916445b5b49SHorst Hummel int len, count; 2917445b5b49SHorst Hummel char *datap; 2918445b5b49SHorst Hummel 2919445b5b49SHorst Hummel len = 0; 2920445b5b49SHorst Hummel while (from <= to) { 2921445b5b49SHorst Hummel len += sprintf(page + len, KERN_ERR PRINTK_HEADER 2922445b5b49SHorst Hummel " CCW %p: %08X %08X DAT:", 2923445b5b49SHorst Hummel from, ((int *) from)[0], ((int *) from)[1]); 2924445b5b49SHorst Hummel 2925445b5b49SHorst Hummel /* get pointer to data (consider IDALs) */ 2926445b5b49SHorst Hummel if (from->flags & CCW_FLAG_IDA) 2927445b5b49SHorst Hummel datap = (char *) *((addr_t *) (addr_t) from->cda); 2928445b5b49SHorst Hummel else 2929445b5b49SHorst Hummel datap = (char *) ((addr_t) from->cda); 2930445b5b49SHorst Hummel 2931445b5b49SHorst Hummel /* dump data (max 32 bytes) */ 2932445b5b49SHorst Hummel for (count = 0; count < from->count && count < 32; count++) { 2933445b5b49SHorst Hummel if (count % 8 == 0) len += sprintf(page + len, " "); 2934445b5b49SHorst Hummel if (count % 4 == 0) len += sprintf(page + len, " "); 2935445b5b49SHorst Hummel len += sprintf(page + len, "%02x", datap[count]); 2936445b5b49SHorst Hummel } 2937445b5b49SHorst Hummel len += sprintf(page + len, "\n"); 2938445b5b49SHorst Hummel from++; 2939445b5b49SHorst Hummel } 2940445b5b49SHorst Hummel return len; 2941445b5b49SHorst Hummel } 2942445b5b49SHorst Hummel 2943fc19f381SStefan Haberland static void 2944fc19f381SStefan Haberland dasd_eckd_dump_sense_dbf(struct dasd_device *device, struct dasd_ccw_req *req, 2945fc19f381SStefan Haberland struct irb *irb, char *reason) 2946fc19f381SStefan Haberland { 2947fc19f381SStefan Haberland u64 *sense; 2948fc19f381SStefan Haberland int sl; 2949fc19f381SStefan Haberland struct tsb *tsb; 2950fc19f381SStefan Haberland 2951fc19f381SStefan Haberland sense = NULL; 2952fc19f381SStefan Haberland tsb = NULL; 2953fc19f381SStefan Haberland if (req && scsw_is_tm(&req->irb.scsw)) { 2954fc19f381SStefan Haberland if (irb->scsw.tm.tcw) 2955fc19f381SStefan Haberland tsb = tcw_get_tsb( 2956fc19f381SStefan Haberland (struct tcw *)(unsigned long)irb->scsw.tm.tcw); 2957fc19f381SStefan Haberland if (tsb && (irb->scsw.tm.fcxs == 0x01)) { 2958fc19f381SStefan Haberland switch (tsb->flags & 0x07) { 2959fc19f381SStefan Haberland case 1: /* tsa_iostat */ 2960fc19f381SStefan Haberland sense = (u64 *)tsb->tsa.iostat.sense; 2961fc19f381SStefan Haberland break; 2962fc19f381SStefan Haberland case 2: /* ts_ddpc */ 2963fc19f381SStefan Haberland sense = (u64 *)tsb->tsa.ddpc.sense; 2964fc19f381SStefan Haberland break; 2965fc19f381SStefan Haberland case 3: /* tsa_intrg */ 2966fc19f381SStefan Haberland break; 2967fc19f381SStefan Haberland } 2968fc19f381SStefan Haberland } 2969fc19f381SStefan Haberland } else { 2970fc19f381SStefan Haberland if (irb->esw.esw0.erw.cons) 2971fc19f381SStefan Haberland sense = (u64 *)irb->ecw; 2972fc19f381SStefan Haberland } 2973fc19f381SStefan Haberland if (sense) { 2974fc19f381SStefan Haberland for (sl = 0; sl < 4; sl++) { 2975fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_EMERG, device, 2976fc19f381SStefan Haberland "%s: %016llx %016llx %016llx %016llx", 2977fc19f381SStefan Haberland reason, sense[0], sense[1], sense[2], 2978fc19f381SStefan Haberland sense[3]); 2979fc19f381SStefan Haberland } 2980fc19f381SStefan Haberland } else { 2981fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_EMERG, device, "%s", 2982fc19f381SStefan Haberland "SORRY - NO VALID SENSE AVAILABLE\n"); 2983fc19f381SStefan Haberland } 2984fc19f381SStefan Haberland } 2985fc19f381SStefan Haberland 2986445b5b49SHorst Hummel /* 29871da177e4SLinus Torvalds * Print sense data and related channel program. 29881da177e4SLinus Torvalds * Parts are printed because printk buffer is only 1024 bytes. 29891da177e4SLinus Torvalds */ 2990f3eb5384SStefan Weinhuber static void dasd_eckd_dump_sense_ccw(struct dasd_device *device, 29918e09f215SStefan Weinhuber struct dasd_ccw_req *req, struct irb *irb) 29921da177e4SLinus Torvalds { 29931da177e4SLinus Torvalds char *page; 2994445b5b49SHorst Hummel struct ccw1 *first, *last, *fail, *from, *to; 2995445b5b49SHorst Hummel int len, sl, sct; 29961da177e4SLinus Torvalds 29971da177e4SLinus Torvalds page = (char *) get_zeroed_page(GFP_ATOMIC); 29981da177e4SLinus Torvalds if (page == NULL) { 2999fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, "%s", 3000fc19f381SStefan Haberland "No memory to dump sense data\n"); 30011da177e4SLinus Torvalds return; 30021da177e4SLinus Torvalds } 3003445b5b49SHorst Hummel /* dump the sense data */ 30041da177e4SLinus Torvalds len = sprintf(page, KERN_ERR PRINTK_HEADER 30051da177e4SLinus Torvalds " I/O status report for device %s:\n", 30062a0217d5SKay Sievers dev_name(&device->cdev->dev)); 30071da177e4SLinus Torvalds len += sprintf(page + len, KERN_ERR PRINTK_HEADER 30081da177e4SLinus Torvalds " in req: %p CS: 0x%02X DS: 0x%02X\n", req, 3009f3eb5384SStefan Weinhuber scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw)); 30101da177e4SLinus Torvalds len += sprintf(page + len, KERN_ERR PRINTK_HEADER 30111da177e4SLinus Torvalds " device %s: Failing CCW: %p\n", 30122a0217d5SKay Sievers dev_name(&device->cdev->dev), 301323d805b6SPeter Oberparleiter (void *) (addr_t) irb->scsw.cmd.cpa); 30141da177e4SLinus Torvalds if (irb->esw.esw0.erw.cons) { 30151da177e4SLinus Torvalds for (sl = 0; sl < 4; sl++) { 30161da177e4SLinus Torvalds len += sprintf(page + len, KERN_ERR PRINTK_HEADER 30171da177e4SLinus Torvalds " Sense(hex) %2d-%2d:", 30181da177e4SLinus Torvalds (8 * sl), ((8 * sl) + 7)); 30191da177e4SLinus Torvalds 30201da177e4SLinus Torvalds for (sct = 0; sct < 8; sct++) { 30211da177e4SLinus Torvalds len += sprintf(page + len, " %02x", 30221da177e4SLinus Torvalds irb->ecw[8 * sl + sct]); 30231da177e4SLinus Torvalds } 30241da177e4SLinus Torvalds len += sprintf(page + len, "\n"); 30251da177e4SLinus Torvalds } 30261da177e4SLinus Torvalds 30271da177e4SLinus Torvalds if (irb->ecw[27] & DASD_SENSE_BIT_0) { 30281da177e4SLinus Torvalds /* 24 Byte Sense Data */ 3029445b5b49SHorst Hummel sprintf(page + len, KERN_ERR PRINTK_HEADER 30301da177e4SLinus Torvalds " 24 Byte: %x MSG %x, " 30311da177e4SLinus Torvalds "%s MSGb to SYSOP\n", 30321da177e4SLinus Torvalds irb->ecw[7] >> 4, irb->ecw[7] & 0x0f, 30331da177e4SLinus Torvalds irb->ecw[1] & 0x10 ? "" : "no"); 30341da177e4SLinus Torvalds } else { 30351da177e4SLinus Torvalds /* 32 Byte Sense Data */ 3036445b5b49SHorst Hummel sprintf(page + len, KERN_ERR PRINTK_HEADER 30371da177e4SLinus Torvalds " 32 Byte: Format: %x " 30381da177e4SLinus Torvalds "Exception class %x\n", 30391da177e4SLinus Torvalds irb->ecw[6] & 0x0f, irb->ecw[22] >> 4); 30401da177e4SLinus Torvalds } 30411da177e4SLinus Torvalds } else { 3042445b5b49SHorst Hummel sprintf(page + len, KERN_ERR PRINTK_HEADER 30431da177e4SLinus Torvalds " SORRY - NO VALID SENSE AVAILABLE\n"); 30441da177e4SLinus Torvalds } 3045445b5b49SHorst Hummel printk("%s", page); 30461da177e4SLinus Torvalds 30478e09f215SStefan Weinhuber if (req) { 30488e09f215SStefan Weinhuber /* req == NULL for unsolicited interrupts */ 3049445b5b49SHorst Hummel /* dump the Channel Program (max 140 Bytes per line) */ 3050445b5b49SHorst Hummel /* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */ 3051445b5b49SHorst Hummel first = req->cpaddr; 3052445b5b49SHorst Hummel for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++); 3053445b5b49SHorst Hummel to = min(first + 6, last); 30541da177e4SLinus Torvalds len = sprintf(page, KERN_ERR PRINTK_HEADER 30551da177e4SLinus Torvalds " Related CP in req: %p\n", req); 3056445b5b49SHorst Hummel dasd_eckd_dump_ccw_range(first, to, page + len); 3057445b5b49SHorst Hummel printk("%s", page); 30581da177e4SLinus Torvalds 3059445b5b49SHorst Hummel /* print failing CCW area (maximum 4) */ 3060445b5b49SHorst Hummel /* scsw->cda is either valid or zero */ 30611da177e4SLinus Torvalds len = 0; 3062445b5b49SHorst Hummel from = ++to; 306323d805b6SPeter Oberparleiter fail = (struct ccw1 *)(addr_t) 306423d805b6SPeter Oberparleiter irb->scsw.cmd.cpa; /* failing CCW */ 3065445b5b49SHorst Hummel if (from < fail - 2) { 3066445b5b49SHorst Hummel from = fail - 2; /* there is a gap - print header */ 3067445b5b49SHorst Hummel len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n"); 30681da177e4SLinus Torvalds } 3069445b5b49SHorst Hummel to = min(fail + 1, last); 3070445b5b49SHorst Hummel len += dasd_eckd_dump_ccw_range(from, to, page + len); 30711da177e4SLinus Torvalds 3072445b5b49SHorst Hummel /* print last CCWs (maximum 2) */ 3073445b5b49SHorst Hummel from = max(from, ++to); 3074445b5b49SHorst Hummel if (from < last - 1) { 3075445b5b49SHorst Hummel from = last - 1; /* there is a gap - print header */ 30761da177e4SLinus Torvalds len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n"); 30771da177e4SLinus Torvalds } 3078445b5b49SHorst Hummel len += dasd_eckd_dump_ccw_range(from, last, page + len); 30791da177e4SLinus Torvalds if (len > 0) 3080445b5b49SHorst Hummel printk("%s", page); 30818e09f215SStefan Weinhuber } 30821da177e4SLinus Torvalds free_page((unsigned long) page); 30831da177e4SLinus Torvalds } 30841da177e4SLinus Torvalds 3085f3eb5384SStefan Weinhuber 3086f3eb5384SStefan Weinhuber /* 3087f3eb5384SStefan Weinhuber * Print sense data from a tcw. 3088f3eb5384SStefan Weinhuber */ 3089f3eb5384SStefan Weinhuber static void dasd_eckd_dump_sense_tcw(struct dasd_device *device, 3090f3eb5384SStefan Weinhuber struct dasd_ccw_req *req, struct irb *irb) 3091f3eb5384SStefan Weinhuber { 3092f3eb5384SStefan Weinhuber char *page; 3093f3eb5384SStefan Weinhuber int len, sl, sct, residual; 3094f3eb5384SStefan Weinhuber 3095f3eb5384SStefan Weinhuber struct tsb *tsb; 3096f3eb5384SStefan Weinhuber u8 *sense; 3097f3eb5384SStefan Weinhuber 3098f3eb5384SStefan Weinhuber 3099f3eb5384SStefan Weinhuber page = (char *) get_zeroed_page(GFP_ATOMIC); 3100f3eb5384SStefan Weinhuber if (page == NULL) { 3101fc19f381SStefan Haberland DBF_DEV_EVENT(DBF_WARNING, device, " %s", 3102f3eb5384SStefan Weinhuber "No memory to dump sense data"); 3103f3eb5384SStefan Weinhuber return; 3104f3eb5384SStefan Weinhuber } 3105f3eb5384SStefan Weinhuber /* dump the sense data */ 3106f3eb5384SStefan Weinhuber len = sprintf(page, KERN_ERR PRINTK_HEADER 3107f3eb5384SStefan Weinhuber " I/O status report for device %s:\n", 3108f3eb5384SStefan Weinhuber dev_name(&device->cdev->dev)); 3109f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3110f3eb5384SStefan Weinhuber " in req: %p CS: 0x%02X DS: 0x%02X " 3111f3eb5384SStefan Weinhuber "fcxs: 0x%02X schxs: 0x%02X\n", req, 3112f3eb5384SStefan Weinhuber scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw), 3113f3eb5384SStefan Weinhuber irb->scsw.tm.fcxs, irb->scsw.tm.schxs); 3114f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3115f3eb5384SStefan Weinhuber " device %s: Failing TCW: %p\n", 3116f3eb5384SStefan Weinhuber dev_name(&device->cdev->dev), 3117f3eb5384SStefan Weinhuber (void *) (addr_t) irb->scsw.tm.tcw); 3118f3eb5384SStefan Weinhuber 3119f3eb5384SStefan Weinhuber tsb = NULL; 3120f3eb5384SStefan Weinhuber sense = NULL; 3121f3eb5384SStefan Weinhuber if (irb->scsw.tm.tcw) 3122f3eb5384SStefan Weinhuber tsb = tcw_get_tsb( 3123f3eb5384SStefan Weinhuber (struct tcw *)(unsigned long)irb->scsw.tm.tcw); 3124f3eb5384SStefan Weinhuber 3125f3eb5384SStefan Weinhuber if (tsb && (irb->scsw.tm.fcxs == 0x01)) { 3126f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3127f3eb5384SStefan Weinhuber " tsb->length %d\n", tsb->length); 3128f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3129f3eb5384SStefan Weinhuber " tsb->flags %x\n", tsb->flags); 3130f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3131f3eb5384SStefan Weinhuber " tsb->dcw_offset %d\n", tsb->dcw_offset); 3132f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3133f3eb5384SStefan Weinhuber " tsb->count %d\n", tsb->count); 3134f3eb5384SStefan Weinhuber residual = tsb->count - 28; 3135f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3136f3eb5384SStefan Weinhuber " residual %d\n", residual); 3137f3eb5384SStefan Weinhuber 3138f3eb5384SStefan Weinhuber switch (tsb->flags & 0x07) { 3139f3eb5384SStefan Weinhuber case 1: /* tsa_iostat */ 3140f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3141f3eb5384SStefan Weinhuber " tsb->tsa.iostat.dev_time %d\n", 3142f3eb5384SStefan Weinhuber tsb->tsa.iostat.dev_time); 3143f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3144f3eb5384SStefan Weinhuber " tsb->tsa.iostat.def_time %d\n", 3145f3eb5384SStefan Weinhuber tsb->tsa.iostat.def_time); 3146f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3147f3eb5384SStefan Weinhuber " tsb->tsa.iostat.queue_time %d\n", 3148f3eb5384SStefan Weinhuber tsb->tsa.iostat.queue_time); 3149f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3150f3eb5384SStefan Weinhuber " tsb->tsa.iostat.dev_busy_time %d\n", 3151f3eb5384SStefan Weinhuber tsb->tsa.iostat.dev_busy_time); 3152f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3153f3eb5384SStefan Weinhuber " tsb->tsa.iostat.dev_act_time %d\n", 3154f3eb5384SStefan Weinhuber tsb->tsa.iostat.dev_act_time); 3155f3eb5384SStefan Weinhuber sense = tsb->tsa.iostat.sense; 3156f3eb5384SStefan Weinhuber break; 3157f3eb5384SStefan Weinhuber case 2: /* ts_ddpc */ 3158f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3159f3eb5384SStefan Weinhuber " tsb->tsa.ddpc.rc %d\n", tsb->tsa.ddpc.rc); 3160f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3161f3eb5384SStefan Weinhuber " tsb->tsa.ddpc.rcq: "); 3162f3eb5384SStefan Weinhuber for (sl = 0; sl < 16; sl++) { 3163f3eb5384SStefan Weinhuber for (sct = 0; sct < 8; sct++) { 3164f3eb5384SStefan Weinhuber len += sprintf(page + len, " %02x", 3165f3eb5384SStefan Weinhuber tsb->tsa.ddpc.rcq[sl]); 3166f3eb5384SStefan Weinhuber } 3167f3eb5384SStefan Weinhuber len += sprintf(page + len, "\n"); 3168f3eb5384SStefan Weinhuber } 3169f3eb5384SStefan Weinhuber sense = tsb->tsa.ddpc.sense; 3170f3eb5384SStefan Weinhuber break; 3171f3eb5384SStefan Weinhuber case 3: /* tsa_intrg */ 3172f3eb5384SStefan Weinhuber len += sprintf(page + len, KERN_ERR PRINTK_HEADER 3173f3eb5384SStefan Weinhuber " tsb->tsa.intrg.: not supportet yet \n"); 3174f3eb5384SStefan Weinhuber break; 3175f3eb5384SStefan Weinhuber } 3176f3eb5384SStefan Weinhuber 3177f3eb5384SStefan Weinhuber if (sense) { 3178f3eb5384SStefan Weinhuber for (sl = 0; sl < 4; sl++) { 3179f3eb5384SStefan Weinhuber len += sprintf(page + len, 3180f3eb5384SStefan Weinhuber KERN_ERR PRINTK_HEADER 3181f3eb5384SStefan Weinhuber " Sense(hex) %2d-%2d:", 3182f3eb5384SStefan Weinhuber (8 * sl), ((8 * sl) + 7)); 3183f3eb5384SStefan Weinhuber for (sct = 0; sct < 8; sct++) { 3184f3eb5384SStefan Weinhuber len += sprintf(page + len, " %02x", 3185f3eb5384SStefan Weinhuber sense[8 * sl + sct]); 3186f3eb5384SStefan Weinhuber } 3187f3eb5384SStefan Weinhuber len += sprintf(page + len, "\n"); 3188f3eb5384SStefan Weinhuber } 3189f3eb5384SStefan Weinhuber 3190f3eb5384SStefan Weinhuber if (sense[27] & DASD_SENSE_BIT_0) { 3191f3eb5384SStefan Weinhuber /* 24 Byte Sense Data */ 3192f3eb5384SStefan Weinhuber sprintf(page + len, KERN_ERR PRINTK_HEADER 3193f3eb5384SStefan Weinhuber " 24 Byte: %x MSG %x, " 3194f3eb5384SStefan Weinhuber "%s MSGb to SYSOP\n", 3195f3eb5384SStefan Weinhuber sense[7] >> 4, sense[7] & 0x0f, 3196f3eb5384SStefan Weinhuber sense[1] & 0x10 ? "" : "no"); 3197f3eb5384SStefan Weinhuber } else { 3198f3eb5384SStefan Weinhuber /* 32 Byte Sense Data */ 3199f3eb5384SStefan Weinhuber sprintf(page + len, KERN_ERR PRINTK_HEADER 3200f3eb5384SStefan Weinhuber " 32 Byte: Format: %x " 3201f3eb5384SStefan Weinhuber "Exception class %x\n", 3202f3eb5384SStefan Weinhuber sense[6] & 0x0f, sense[22] >> 4); 3203f3eb5384SStefan Weinhuber } 3204f3eb5384SStefan Weinhuber } else { 3205f3eb5384SStefan Weinhuber sprintf(page + len, KERN_ERR PRINTK_HEADER 3206f3eb5384SStefan Weinhuber " SORRY - NO VALID SENSE AVAILABLE\n"); 3207f3eb5384SStefan Weinhuber } 3208f3eb5384SStefan Weinhuber } else { 3209f3eb5384SStefan Weinhuber sprintf(page + len, KERN_ERR PRINTK_HEADER 3210f3eb5384SStefan Weinhuber " SORRY - NO TSB DATA AVAILABLE\n"); 3211f3eb5384SStefan Weinhuber } 3212f3eb5384SStefan Weinhuber printk("%s", page); 3213f3eb5384SStefan Weinhuber free_page((unsigned long) page); 3214f3eb5384SStefan Weinhuber } 3215f3eb5384SStefan Weinhuber 3216f3eb5384SStefan Weinhuber static void dasd_eckd_dump_sense(struct dasd_device *device, 3217f3eb5384SStefan Weinhuber struct dasd_ccw_req *req, struct irb *irb) 3218f3eb5384SStefan Weinhuber { 3219f3eb5384SStefan Weinhuber if (req && scsw_is_tm(&req->irb.scsw)) 3220f3eb5384SStefan Weinhuber dasd_eckd_dump_sense_tcw(device, req, irb); 3221f3eb5384SStefan Weinhuber else 3222f3eb5384SStefan Weinhuber dasd_eckd_dump_sense_ccw(device, req, irb); 3223f3eb5384SStefan Weinhuber } 3224f3eb5384SStefan Weinhuber 3225f3eb5384SStefan Weinhuber 32261da177e4SLinus Torvalds /* 32271da177e4SLinus Torvalds * max_blocks is dependent on the amount of storage that is available 32281da177e4SLinus Torvalds * in the static io buffer for each device. Currently each device has 32291da177e4SLinus Torvalds * 8192 bytes (=2 pages). For 64 bit one dasd_mchunkt_t structure has 32301da177e4SLinus Torvalds * 24 bytes, the struct dasd_ccw_req has 136 bytes and each block can use 32311da177e4SLinus Torvalds * up to 16 bytes (8 for the ccw and 8 for the idal pointer). In 32321da177e4SLinus Torvalds * addition we have one define extent ccw + 16 bytes of data and one 32331da177e4SLinus Torvalds * locate record ccw + 16 bytes of data. That makes: 32341da177e4SLinus Torvalds * (8192 - 24 - 136 - 8 - 16 - 8 - 16) / 16 = 499 blocks at maximum. 32351da177e4SLinus Torvalds * We want to fit two into the available memory so that we can immediately 32361da177e4SLinus Torvalds * start the next request if one finishes off. That makes 249.5 blocks 32371da177e4SLinus Torvalds * for one request. Give a little safety and the result is 240. 32381da177e4SLinus Torvalds */ 32391da177e4SLinus Torvalds static struct dasd_discipline dasd_eckd_discipline = { 32401da177e4SLinus Torvalds .owner = THIS_MODULE, 32411da177e4SLinus Torvalds .name = "ECKD", 32421da177e4SLinus Torvalds .ebcname = "ECKD", 32431da177e4SLinus Torvalds .max_blocks = 240, 32441da177e4SLinus Torvalds .check_device = dasd_eckd_check_characteristics, 32458e09f215SStefan Weinhuber .uncheck_device = dasd_eckd_uncheck_device, 32461da177e4SLinus Torvalds .do_analysis = dasd_eckd_do_analysis, 32478e09f215SStefan Weinhuber .ready_to_online = dasd_eckd_ready_to_online, 32488e09f215SStefan Weinhuber .online_to_ready = dasd_eckd_online_to_ready, 32491da177e4SLinus Torvalds .fill_geometry = dasd_eckd_fill_geometry, 32501da177e4SLinus Torvalds .start_IO = dasd_start_IO, 32511da177e4SLinus Torvalds .term_IO = dasd_term_IO, 32528e09f215SStefan Weinhuber .handle_terminated_request = dasd_eckd_handle_terminated_request, 32531da177e4SLinus Torvalds .format_device = dasd_eckd_format_device, 32541da177e4SLinus Torvalds .erp_action = dasd_eckd_erp_action, 32551da177e4SLinus Torvalds .erp_postaction = dasd_eckd_erp_postaction, 32568e09f215SStefan Weinhuber .handle_unsolicited_interrupt = dasd_eckd_handle_unsolicited_interrupt, 32578e09f215SStefan Weinhuber .build_cp = dasd_eckd_build_alias_cp, 32588e09f215SStefan Weinhuber .free_cp = dasd_eckd_free_alias_cp, 32591da177e4SLinus Torvalds .dump_sense = dasd_eckd_dump_sense, 3260fc19f381SStefan Haberland .dump_sense_dbf = dasd_eckd_dump_sense_dbf, 32611da177e4SLinus Torvalds .fill_info = dasd_eckd_fill_info, 32621107ccfbSChristoph Hellwig .ioctl = dasd_eckd_ioctl, 32631da177e4SLinus Torvalds }; 32641da177e4SLinus Torvalds 32651da177e4SLinus Torvalds static int __init 32661da177e4SLinus Torvalds dasd_eckd_init(void) 32671da177e4SLinus Torvalds { 32681da177e4SLinus Torvalds ASCEBC(dasd_eckd_discipline.ebcname, 4); 326940545573SHorst Hummel return ccw_driver_register(&dasd_eckd_driver); 32701da177e4SLinus Torvalds } 32711da177e4SLinus Torvalds 32721da177e4SLinus Torvalds static void __exit 32731da177e4SLinus Torvalds dasd_eckd_cleanup(void) 32741da177e4SLinus Torvalds { 32751da177e4SLinus Torvalds ccw_driver_unregister(&dasd_eckd_driver); 32761da177e4SLinus Torvalds } 32771da177e4SLinus Torvalds 32781da177e4SLinus Torvalds module_init(dasd_eckd_init); 32791da177e4SLinus Torvalds module_exit(dasd_eckd_cleanup); 3280