X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fs390%2Fblock%2Fdasd_eckd.c;fp=drivers%2Fs390%2Fblock%2Fdasd_eckd.c;h=fdaa471e845fa78c73ff7a704bada1fb0f0b3ff7;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=822e2a265578ca798afe71ee7279610de496ada2;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 822e2a265..fdaa471e8 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1,7 +1,7 @@ -/* +/* * File...........: linux/drivers/s390/block/dasd_eckd.c * Author(s)......: Holger Smolinski - * Horst Hummel + * Horst Hummel * Carsten Otte * Martin Schwidefsky * Bugreports.to..: @@ -9,7 +9,6 @@ * */ -#include #include #include #include @@ -24,6 +23,7 @@ #include #include #include +#include #include #include "dasd_int.h" @@ -65,16 +65,16 @@ struct dasd_eckd_private { /* The ccw bus type uses this table to find devices that it sends to * dasd_eckd_probe */ static struct ccw_device_id dasd_eckd_ids[] = { - { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), driver_info: 0x1}, - { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), driver_info: 0x2}, - { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), driver_info: 0x3}, - { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), driver_info: 0x4}, - { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), driver_info: 0x5}, - { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), driver_info: 0x6}, - { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), driver_info: 0x7}, - { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), driver_info: 0x8}, - { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), driver_info: 0x9}, - { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), driver_info: 0xa}, + { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3390, 0), .driver_info = 0x1}, + { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3390, 0), .driver_info = 0x2}, + { CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3390, 0), .driver_info = 0x3}, + { CCW_DEVICE_DEVTYPE (0x3990, 0, 0x3380, 0), .driver_info = 0x4}, + { CCW_DEVICE_DEVTYPE (0x2105, 0, 0x3380, 0), .driver_info = 0x5}, + { CCW_DEVICE_DEVTYPE (0x9343, 0, 0x9345, 0), .driver_info = 0x6}, + { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3390, 0), .driver_info = 0x7}, + { CCW_DEVICE_DEVTYPE (0x2107, 0, 0x3380, 0), .driver_info = 0x8}, + { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3390, 0), .driver_info = 0x9}, + { CCW_DEVICE_DEVTYPE (0x1750, 0, 0x3380, 0), .driver_info = 0xa}, { /* end of list */ }, }; @@ -89,17 +89,22 @@ dasd_eckd_probe (struct ccw_device *cdev) { int ret; - ret = dasd_generic_probe (cdev, &dasd_eckd_discipline); - if (ret) + /* set ECKD specific ccw-device options */ + ret = ccw_device_set_options(cdev, CCWDEV_ALLOW_FORCE); + if (ret) { + printk(KERN_WARNING + "dasd_eckd_probe: could not set ccw-device options " + "for %s\n", cdev->dev.bus_id); return ret; - ccw_device_set_options(cdev, CCWDEV_DO_PATHGROUP | CCWDEV_ALLOW_FORCE); - return 0; + } + ret = dasd_generic_probe(cdev, &dasd_eckd_discipline); + return ret; } static int dasd_eckd_set_online(struct ccw_device *cdev) { - return dasd_generic_set_online (cdev, &dasd_eckd_discipline); + return dasd_generic_set_online(cdev, &dasd_eckd_discipline); } static struct ccw_driver dasd_eckd_driver = { @@ -210,14 +215,14 @@ check_XRC (struct ccw1 *de_ccw, /* switch on System Time Stamp - needed for XRC Support */ if (private->rdc_data.facilities.XRC_supported) { - + data->ga_extended |= 0x08; /* switch on 'Time Stamp Valid' */ data->ga_extended |= 0x02; /* switch on 'Extended Parameter' */ - + data->ep_sys_time = get_clock (); - + de_ccw->count = sizeof (struct DE_eckd_data); - de_ccw->flags |= CCW_FLAG_SLI; + de_ccw->flags |= CCW_FLAG_SLI; } return; @@ -296,8 +301,8 @@ define_extent(struct ccw1 * ccw, struct DE_eckd_data * data, int trk, /* check for sequential prestage - enhance cylinder range */ if (data->attributes.operation == DASD_SEQ_PRESTAGE || data->attributes.operation == DASD_SEQ_ACCESS) { - - if (end.cyl + private->attrib.nr_cyl < geo.cyl) + + if (end.cyl + private->attrib.nr_cyl < geo.cyl) end.cyl += private->attrib.nr_cyl; else end.cyl = (geo.cyl - 1); @@ -317,7 +322,7 @@ locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, int trk, struct dasd_eckd_private *private; int sector; int dn, d; - + private = (struct dasd_eckd_private *) device->private; DBF_DEV_EVENT(DBF_INFO, device, @@ -446,6 +451,39 @@ dasd_eckd_cdl_reclen(int recid) return LABEL_SIZE; } +/* + * Generate device unique id that specifies the physical device. + */ +static int +dasd_eckd_generate_uid(struct dasd_device *device, struct dasd_uid *uid) +{ + struct dasd_eckd_private *private; + struct dasd_eckd_confdata *confdata; + + private = (struct dasd_eckd_private *) device->private; + if (!private) + return -ENODEV; + confdata = &private->conf_data; + if (!confdata) + return -ENODEV; + + memset(uid, 0, sizeof(struct dasd_uid)); + memcpy(uid->vendor, confdata->ned1.HDA_manufacturer, + sizeof(uid->vendor) - 1); + EBCASC(uid->vendor, sizeof(uid->vendor) - 1); + memcpy(uid->serial, confdata->ned1.HDA_location, + sizeof(uid->serial) - 1); + EBCASC(uid->serial, sizeof(uid->serial) - 1); + uid->ssid = confdata->neq.subsystemID; + if (confdata->ned2.sneq.flags == 0x40) { + uid->alias = 1; + uid->unit_addr = confdata->ned2.sneq.base_unit_addr; + } else + uid->unit_addr = confdata->ned1.unit_addr; + + return 0; +} + static int dasd_eckd_read_conf(struct dasd_device *device) { @@ -507,17 +545,101 @@ dasd_eckd_read_conf(struct dasd_device *device) return 0; } +/* + * Build CP for Perform Subsystem Function - SSC. + */ +struct dasd_ccw_req * +dasd_eckd_build_psf_ssc(struct dasd_device *device) +{ + struct dasd_ccw_req *cqr; + struct dasd_psf_ssc_data *psf_ssc_data; + struct ccw1 *ccw; + + cqr = dasd_smalloc_request("ECKD", 1 /* PSF */ , + sizeof(struct dasd_psf_ssc_data), + device); + + if (IS_ERR(cqr)) { + DEV_MESSAGE(KERN_WARNING, device, "%s", + "Could not allocate PSF-SSC request"); + return cqr; + } + psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data; + psf_ssc_data->order = PSF_ORDER_SSC; + psf_ssc_data->suborder = 0x08; + + ccw = cqr->cpaddr; + ccw->cmd_code = DASD_ECKD_CCW_PSF; + ccw->cda = (__u32)(addr_t)psf_ssc_data; + ccw->count = 66; + + cqr->device = device; + cqr->expires = 10*HZ; + cqr->buildclk = get_clock(); + cqr->status = DASD_CQR_FILLED; + return cqr; +} + +/* + * Perform Subsystem Function. + * It is necessary to trigger CIO for channel revalidation since this + * call might change behaviour of DASD devices. + */ +static int +dasd_eckd_psf_ssc(struct dasd_device *device) +{ + struct dasd_ccw_req *cqr; + int rc; + + cqr = dasd_eckd_build_psf_ssc(device); + if (IS_ERR(cqr)) + return PTR_ERR(cqr); + + rc = dasd_sleep_on(cqr); + if (!rc) + /* trigger CIO to reprobe devices */ + css_schedule_reprobe(); + dasd_sfree_request(cqr, cqr->device); + return rc; +} + +/* + * Valide storage server of current device. + */ +static int +dasd_eckd_validate_server(struct dasd_device *device, struct dasd_uid *uid) +{ + int rc; + + /* Currently PAV is the only reason to 'validate' server on LPAR */ + if (dasd_nopav || MACHINE_IS_VM) + return 0; + rc = dasd_eckd_psf_ssc(device); + /* may be requested feature is not available on server, + * therefore just report error and go ahead */ + DEV_MESSAGE(KERN_INFO, device, + "PSF-SSC on storage subsystem %s.%s.%04x returned rc=%d", + uid->vendor, uid->serial, uid->ssid, rc); + /* RE-Read Configuration Data */ + return dasd_eckd_read_conf(device); +} + +/* + * Check device characteristics. + * If the device is accessible using ECKD discipline, the device is enabled. + */ static int dasd_eckd_check_characteristics(struct dasd_device *device) { struct dasd_eckd_private *private; + struct dasd_uid uid; void *rdc_data; int rc; private = (struct dasd_eckd_private *) device->private; if (private == NULL) { - private = kmalloc(sizeof(struct dasd_eckd_private), + private = kzalloc(sizeof(struct dasd_eckd_private), GFP_KERNEL | GFP_DMA); if (private == NULL) { DEV_MESSAGE(KERN_WARNING, device, "%s", @@ -525,7 +647,6 @@ dasd_eckd_check_characteristics(struct dasd_device *device) "data"); return -ENOMEM; } - memset(private, 0, sizeof(struct dasd_eckd_private)); device->private = (void *) private; } /* Invalidate status of initial analysis. */ @@ -534,15 +655,29 @@ dasd_eckd_check_characteristics(struct dasd_device *device) private->attrib.operation = DASD_NORMAL_CACHE; private->attrib.nr_cyl = 0; + /* Read Configuration Data */ + rc = dasd_eckd_read_conf(device); + if (rc) + return rc; + + /* Generate device unique id and register in devmap */ + rc = dasd_eckd_generate_uid(device, &uid); + if (rc) + return rc; + rc = dasd_set_uid(device->cdev, &uid); + if (rc == 1) /* new server found */ + rc = dasd_eckd_validate_server(device, &uid); + if (rc) + return rc; + /* Read Device Characteristics */ rdc_data = (void *) &(private->rdc_data); + memset(rdc_data, 0, sizeof(rdc_data)); rc = read_dev_chars(device->cdev, &rdc_data, 64); - if (rc) { + if (rc) DEV_MESSAGE(KERN_WARNING, device, - "Read device characteristics returned error %d", - rc); - return rc; - } + "Read device characteristics returned " + "rc=%d", rc); DEV_MESSAGE(KERN_INFO, device, "%04X/%02X(CU:%04X/%02X) Cyl:%d Head:%d Sec:%d", @@ -553,11 +688,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device) private->rdc_data.no_cyl, private->rdc_data.trk_per_cyl, private->rdc_data.sec_per_trk); - - /* Read Configuration Data */ - rc = dasd_eckd_read_conf (device); return rc; - } static struct dasd_ccw_req * @@ -726,7 +857,7 @@ dasd_eckd_end_analysis(struct dasd_device *device) ((private->rdc_data.no_cyl * private->rdc_data.trk_per_cyl * blk_per_trk * (device->bp_block >> 9)) >> 1), - ((blk_per_trk * device->bp_block) >> 10), + ((blk_per_trk * device->bp_block) >> 10), private->uses_cdl ? "compatible disk layout" : "linux disk layout"); @@ -923,7 +1054,7 @@ dasd_eckd_format_device(struct dasd_device * device, if (i < 3) { ect->kl = 4; ect->dl = sizes_trk0[i] - 4; - } + } } if ((fdata->intensity & 0x08) && fdata->start_unit == 1) { @@ -1084,7 +1215,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) dst = page_address(bv->bv_page) + bv->bv_offset; if (dasd_page_cache) { char *copy = kmem_cache_alloc(dasd_page_cache, - SLAB_DMA | __GFP_NOWARN); + GFP_DMA | __GFP_NOWARN); if (copy && rq_data_dir(req) == WRITE) memcpy(copy + bv->bv_offset, dst, bv->bv_len); if (copy) @@ -1135,7 +1266,7 @@ dasd_eckd_build_cp(struct dasd_device * device, struct request *req) recid++; } } - if (req->flags & REQ_FAILFAST) + if (req->cmd_flags & REQ_FAILFAST) set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags); cqr->device = device; cqr->expires = 5 * 60 * HZ; /* 5 minutes */ @@ -1223,23 +1354,18 @@ dasd_eckd_fill_info(struct dasd_device * device, /* * Release device ioctl. - * Buils a channel programm to releases a prior reserved + * Buils a channel programm to releases a prior reserved * (see dasd_eckd_reserve) device. */ static int -dasd_eckd_release(struct block_device *bdev, int no, long args) +dasd_eckd_release(struct dasd_device *device) { - struct dasd_device *device; struct dasd_ccw_req *cqr; int rc; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 1, 32, device); if (IS_ERR(cqr)) { @@ -1268,23 +1394,18 @@ dasd_eckd_release(struct block_device *bdev, int no, long args) /* * Reserve device ioctl. * Options are set to 'synchronous wait for interrupt' and - * 'timeout the request'. This leads to a terminate IO if - * the interrupt is outstanding for a certain time. + * 'timeout the request'. This leads to a terminate IO if + * the interrupt is outstanding for a certain time. */ static int -dasd_eckd_reserve(struct block_device *bdev, int no, long args) +dasd_eckd_reserve(struct dasd_device *device) { - struct dasd_device *device; struct dasd_ccw_req *cqr; int rc; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 1, 32, device); if (IS_ERR(cqr)) { @@ -1312,23 +1433,18 @@ dasd_eckd_reserve(struct block_device *bdev, int no, long args) /* * Steal lock ioctl - unconditional reserve device. - * Buils a channel programm to break a device's reservation. + * Buils a channel programm to break a device's reservation. * (unconditional reserve) */ static int -dasd_eckd_steal_lock(struct block_device *bdev, int no, long args) +dasd_eckd_steal_lock(struct dasd_device *device) { - struct dasd_device *device; struct dasd_ccw_req *cqr; int rc; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 1, 32, device); if (IS_ERR(cqr)) { @@ -1358,19 +1474,14 @@ dasd_eckd_steal_lock(struct block_device *bdev, int no, long args) * Read performance statistics */ static int -dasd_eckd_performance(struct block_device *bdev, int no, long args) +dasd_eckd_performance(struct dasd_device *device, void __user *argp) { - struct dasd_device *device; struct dasd_psf_prssd_data *prssdp; struct dasd_rssd_perf_stats_t *stats; struct dasd_ccw_req *cqr; struct ccw1 *ccw; int rc; - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - cqr = dasd_smalloc_request(dasd_eckd_discipline.name, 1 /* PSF */ + 1 /* RSSD */ , (sizeof (struct dasd_psf_prssd_data) + @@ -1414,8 +1525,9 @@ dasd_eckd_performance(struct block_device *bdev, int no, long args) /* Prepare for Read Subsystem Data */ prssdp = (struct dasd_psf_prssd_data *) cqr->data; stats = (struct dasd_rssd_perf_stats_t *) (prssdp + 1); - rc = copy_to_user((long __user *) args, (long *) stats, - sizeof(struct dasd_rssd_perf_stats_t)); + if (copy_to_user(argp, stats, + sizeof(struct dasd_rssd_perf_stats_t))) + rc = -EFAULT; } dasd_sfree_request(cqr, cqr->device); return rc; @@ -1426,27 +1538,22 @@ dasd_eckd_performance(struct block_device *bdev, int no, long args) * Returnes the cache attributes used in Define Extend (DE). */ static int -dasd_eckd_get_attrib (struct block_device *bdev, int no, long args) +dasd_eckd_get_attrib(struct dasd_device *device, void __user *argp) { - struct dasd_device *device; - struct dasd_eckd_private *private; - struct attrib_data_t attrib; + struct dasd_eckd_private *private = + (struct dasd_eckd_private *)device->private; + struct attrib_data_t attrib = private->attrib; int rc; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - if (!args) + if (!argp) return -EINVAL; - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - - private = (struct dasd_eckd_private *) device->private; - attrib = private->attrib; - - rc = copy_to_user((long __user *) args, (long *) &attrib, - sizeof (struct attrib_data_t)); + rc = 0; + if (copy_to_user(argp, (long *) &attrib, + sizeof (struct attrib_data_t))) + rc = -EFAULT; return rc; } @@ -1456,26 +1563,19 @@ dasd_eckd_get_attrib (struct block_device *bdev, int no, long args) * Stores the attributes for cache operation to be used in Define Extend (DE). */ static int -dasd_eckd_set_attrib(struct block_device *bdev, int no, long args) +dasd_eckd_set_attrib(struct dasd_device *device, void __user *argp) { - struct dasd_device *device; - struct dasd_eckd_private *private; + struct dasd_eckd_private *private = + (struct dasd_eckd_private *)device->private; struct attrib_data_t attrib; if (!capable(CAP_SYS_ADMIN)) return -EACCES; - if (!args) + if (!argp) return -EINVAL; - device = bdev->bd_disk->private_data; - if (device == NULL) - return -ENODEV; - - if (copy_from_user(&attrib, (void __user *) args, - sizeof (struct attrib_data_t))) { + if (copy_from_user(&attrib, argp, sizeof(struct attrib_data_t))) return -EFAULT; - } - private = (struct dasd_eckd_private *) device->private; private->attrib = attrib; DEV_MESSAGE(KERN_INFO, device, @@ -1484,6 +1584,61 @@ dasd_eckd_set_attrib(struct block_device *bdev, int no, long args) return 0; } +static int +dasd_eckd_ioctl(struct dasd_device *device, unsigned int cmd, void __user *argp) +{ + switch (cmd) { + case BIODASDGATTR: + return dasd_eckd_get_attrib(device, argp); + case BIODASDSATTR: + return dasd_eckd_set_attrib(device, argp); + case BIODASDPSRD: + return dasd_eckd_performance(device, argp); + case BIODASDRLSE: + return dasd_eckd_release(device); + case BIODASDRSRV: + return dasd_eckd_reserve(device); + case BIODASDSLCK: + return dasd_eckd_steal_lock(device); + default: + return -ENOIOCTLCMD; + } +} + +/* + * Dump the range of CCWs into 'page' buffer + * and return number of printed chars. + */ +static inline int +dasd_eckd_dump_ccw_range(struct ccw1 *from, struct ccw1 *to, char *page) +{ + int len, count; + char *datap; + + len = 0; + while (from <= to) { + len += sprintf(page + len, KERN_ERR PRINTK_HEADER + " CCW %p: %08X %08X DAT:", + from, ((int *) from)[0], ((int *) from)[1]); + + /* get pointer to data (consider IDALs) */ + if (from->flags & CCW_FLAG_IDA) + datap = (char *) *((addr_t *) (addr_t) from->cda); + else + datap = (char *) ((addr_t) from->cda); + + /* dump data (max 32 bytes) */ + for (count = 0; count < from->count && count < 32; count++) { + if (count % 8 == 0) len += sprintf(page + len, " "); + if (count % 4 == 0) len += sprintf(page + len, " "); + len += sprintf(page + len, "%02x", datap[count]); + } + len += sprintf(page + len, "\n"); + from++; + } + return len; +} + /* * Print sense data and related channel program. * Parts are printed because printk buffer is only 1024 bytes. @@ -1493,8 +1648,8 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, struct irb *irb) { char *page; - struct ccw1 *act, *end, *last; - int len, sl, sct, count; + struct ccw1 *first, *last, *fail, *from, *to; + int len, sl, sct; page = (char *) get_zeroed_page(GFP_ATOMIC); if (page == NULL) { @@ -1502,7 +1657,8 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, "No memory to dump sense data"); return; } - len = sprintf(page, KERN_ERR PRINTK_HEADER + /* dump the sense data */ + len = sprintf(page, KERN_ERR PRINTK_HEADER " I/O status report for device %s:\n", device->cdev->dev.bus_id); len += sprintf(page + len, KERN_ERR PRINTK_HEADER @@ -1527,87 +1683,55 @@ dasd_eckd_dump_sense(struct dasd_device *device, struct dasd_ccw_req * req, if (irb->ecw[27] & DASD_SENSE_BIT_0) { /* 24 Byte Sense Data */ - len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " 24 Byte: %x MSG %x, " - "%s MSGb to SYSOP\n", - irb->ecw[7] >> 4, irb->ecw[7] & 0x0f, - irb->ecw[1] & 0x10 ? "" : "no"); + sprintf(page + len, KERN_ERR PRINTK_HEADER + " 24 Byte: %x MSG %x, " + "%s MSGb to SYSOP\n", + irb->ecw[7] >> 4, irb->ecw[7] & 0x0f, + irb->ecw[1] & 0x10 ? "" : "no"); } else { /* 32 Byte Sense Data */ - len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " 32 Byte: Format: %x " - "Exception class %x\n", - irb->ecw[6] & 0x0f, irb->ecw[22] >> 4); + sprintf(page + len, KERN_ERR PRINTK_HEADER + " 32 Byte: Format: %x " + "Exception class %x\n", + irb->ecw[6] & 0x0f, irb->ecw[22] >> 4); } } else { - len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " SORRY - NO VALID SENSE AVAILABLE\n"); + sprintf(page + len, KERN_ERR PRINTK_HEADER + " SORRY - NO VALID SENSE AVAILABLE\n"); } - MESSAGE_LOG(KERN_ERR, "%s", - page + sizeof(KERN_ERR PRINTK_HEADER)); - - /* dump the Channel Program */ - /* print first CCWs (maximum 8) */ - act = req->cpaddr; - for (last = act; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++); - end = min(act + 8, last); - len = sprintf(page, KERN_ERR PRINTK_HEADER + printk("%s", page); + + /* dump the Channel Program (max 140 Bytes per line) */ + /* Count CCW and print first CCWs (maximum 1024 % 140 = 7) */ + first = req->cpaddr; + for (last = first; last->flags & (CCW_FLAG_CC | CCW_FLAG_DC); last++); + to = min(first + 6, last); + len = sprintf(page, KERN_ERR PRINTK_HEADER " Related CP in req: %p\n", req); - while (act <= end) { - len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " CCW %p: %08X %08X DAT:", - act, ((int *) act)[0], ((int *) act)[1]); - for (count = 0; count < 32 && count < act->count; - count += sizeof(int)) - len += sprintf(page + len, " %08X", - ((int *) (addr_t) act->cda) - [(count>>2)]); - len += sprintf(page + len, "\n"); - act++; - } - MESSAGE_LOG(KERN_ERR, "%s", - page + sizeof(KERN_ERR PRINTK_HEADER)); + dasd_eckd_dump_ccw_range(first, to, page + len); + printk("%s", page); - /* print failing CCW area */ + /* print failing CCW area (maximum 4) */ + /* scsw->cda is either valid or zero */ len = 0; - if (act < ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2) { - act = ((struct ccw1 *)(addr_t) irb->scsw.cpa) - 2; - len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n"); - } - end = min((struct ccw1 *)(addr_t) irb->scsw.cpa + 2, last); - while (act <= end) { - len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " CCW %p: %08X %08X DAT:", - act, ((int *) act)[0], ((int *) act)[1]); - for (count = 0; count < 32 && count < act->count; - count += sizeof(int)) - len += sprintf(page + len, " %08X", - ((int *) (addr_t) act->cda) - [(count>>2)]); - len += sprintf(page + len, "\n"); - act++; + from = ++to; + fail = (struct ccw1 *)(addr_t) irb->scsw.cpa; /* failing CCW */ + if (from < fail - 2) { + from = fail - 2; /* there is a gap - print header */ + len += sprintf(page, KERN_ERR PRINTK_HEADER "......\n"); } + to = min(fail + 1, last); + len += dasd_eckd_dump_ccw_range(from, to, page + len); - /* print last CCWs */ - if (act < last - 2) { - act = last - 2; + /* print last CCWs (maximum 2) */ + from = max(from, ++to); + if (from < last - 1) { + from = last - 1; /* there is a gap - print header */ len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n"); } - while (act <= last) { - len += sprintf(page + len, KERN_ERR PRINTK_HEADER - " CCW %p: %08X %08X DAT:", - act, ((int *) act)[0], ((int *) act)[1]); - for (count = 0; count < 32 && count < act->count; - count += sizeof(int)) - len += sprintf(page + len, " %08X", - ((int *) (addr_t) act->cda) - [(count>>2)]); - len += sprintf(page + len, "\n"); - act++; - } + len += dasd_eckd_dump_ccw_range(from, last, page + len); if (len > 0) - MESSAGE_LOG(KERN_ERR, "%s", - page + sizeof(KERN_ERR PRINTK_HEADER)); + printk("%s", page); free_page((unsigned long) page); } @@ -1642,86 +1766,21 @@ static struct dasd_discipline dasd_eckd_discipline = { .free_cp = dasd_eckd_free_cp, .dump_sense = dasd_eckd_dump_sense, .fill_info = dasd_eckd_fill_info, + .ioctl = dasd_eckd_ioctl, }; static int __init dasd_eckd_init(void) { - int ret; - - dasd_ioctl_no_register(THIS_MODULE, BIODASDGATTR, - dasd_eckd_get_attrib); - dasd_ioctl_no_register(THIS_MODULE, BIODASDSATTR, - dasd_eckd_set_attrib); - dasd_ioctl_no_register(THIS_MODULE, BIODASDPSRD, - dasd_eckd_performance); - dasd_ioctl_no_register(THIS_MODULE, BIODASDRLSE, - dasd_eckd_release); - dasd_ioctl_no_register(THIS_MODULE, BIODASDRSRV, - dasd_eckd_reserve); - dasd_ioctl_no_register(THIS_MODULE, BIODASDSLCK, - dasd_eckd_steal_lock); - ASCEBC(dasd_eckd_discipline.ebcname, 4); - - ret = ccw_driver_register(&dasd_eckd_driver); - if (ret) { - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDGATTR, - dasd_eckd_get_attrib); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSATTR, - dasd_eckd_set_attrib); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDPSRD, - dasd_eckd_performance); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRLSE, - dasd_eckd_release); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRSRV, - dasd_eckd_reserve); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSLCK, - dasd_eckd_steal_lock); - return ret; - } - - dasd_generic_auto_online(&dasd_eckd_driver); - return 0; + return ccw_driver_register(&dasd_eckd_driver); } static void __exit dasd_eckd_cleanup(void) { ccw_driver_unregister(&dasd_eckd_driver); - - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDGATTR, - dasd_eckd_get_attrib); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSATTR, - dasd_eckd_set_attrib); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDPSRD, - dasd_eckd_performance); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRLSE, - dasd_eckd_release); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDRSRV, - dasd_eckd_reserve); - dasd_ioctl_no_unregister(THIS_MODULE, BIODASDSLCK, - dasd_eckd_steal_lock); } module_init(dasd_eckd_init); module_exit(dasd_eckd_cleanup); - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-indent-level: 4 - * c-brace-imaginary-offset: 0 - * c-brace-offset: -4 - * c-argdecl-indent: 4 - * c-label-offset: -4 - * c-continued-statement-offset: 4 - * c-continued-brace-offset: 0 - * indent-tabs-mode: 1 - * tab-width: 8 - * End: - */