[linux-2.6-block.git] / drivers / s390 / block / dasd_fba.c

/*
 * File...........: linux/drivers/s390/block/dasd_fba.c
 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
 * Bugreports.to..: <Linux390@de.ibm.com>
 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
 *
 */

#define KMSG_COMPONENT "dasd"

#include <linux/stddef.h>
#include <linux/kernel.h>
#include <asm/debug.h>

#include <linux/slab.h>
#include <linux/hdreg.h>	/* HDIO_GETGEO			    */
#include <linux/bio.h>
#include <linux/module.h>
#include <linux/init.h>

#include <asm/idals.h>
#include <asm/ebcdic.h>
#include <asm/io.h>
#include <asm/todclk.h>
#include <asm/ccwdev.h>

#include "dasd_int.h"
#include "dasd_fba.h"

#ifdef PRINTK_HEADER
#undef PRINTK_HEADER
#endif				/* PRINTK_HEADER */
#define PRINTK_HEADER "dasd(fba):"

#define DASD_FBA_CCW_WRITE 0x41
#define DASD_FBA_CCW_READ 0x42
#define DASD_FBA_CCW_LOCATE 0x43
#define DASD_FBA_CCW_DEFINE_EXTENT 0x63

MODULE_LICENSE("GPL");

static struct dasd_discipline dasd_fba_discipline;

struct dasd_fba_private {
	struct dasd_fba_characteristics rdc_data;
};

static struct ccw_device_id dasd_fba_ids[] = {
	{ CCW_DEVICE_DEVTYPE (0x6310, 0, 0x9336, 0), .driver_info = 0x1},
	{ CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3370, 0), .driver_info = 0x2},
	{ /* end of list */ },
};

MODULE_DEVICE_TABLE(ccw, dasd_fba_ids);

static struct ccw_driver dasd_fba_driver; /* see below */
static int
dasd_fba_probe(struct ccw_device *cdev)
{
	return dasd_generic_probe(cdev, &dasd_fba_discipline);
}

static int
dasd_fba_set_online(struct ccw_device *cdev)
{
	return dasd_generic_set_online(cdev, &dasd_fba_discipline);
}

static struct ccw_driver dasd_fba_driver = {
	.name        = "dasd-fba",
	.owner       = THIS_MODULE,
	.ids         = dasd_fba_ids,
	.probe       = dasd_fba_probe,
	.remove      = dasd_generic_remove,
	.set_offline = dasd_generic_set_offline,
	.set_online  = dasd_fba_set_online,
	.notify      = dasd_generic_notify,
};

static void
define_extent(struct ccw1 * ccw, struct DE_fba_data *data, int rw,
	      int blksize, int beg, int nr)
{
	ccw->cmd_code = DASD_FBA_CCW_DEFINE_EXTENT;
	ccw->flags = 0;
	ccw->count = 16;
	ccw->cda = (__u32) __pa(data);
	memset(data, 0, sizeof (struct DE_fba_data));
	if (rw == WRITE)
		(data->mask).perm = 0x0;
	else if (rw == READ)
		(data->mask).perm = 0x1;
	else
		data->mask.perm = 0x2;
	data->blk_size = blksize;
	data->ext_loc = beg;
	data->ext_end = nr - 1;
}

static void
locate_record(struct ccw1 * ccw, struct LO_fba_data *data, int rw,
	      int block_nr, int block_ct)
{
	ccw->cmd_code = DASD_FBA_CCW_LOCATE;
	ccw->flags = 0;
	ccw->count = 8;
	ccw->cda = (__u32) __pa(data);
	memset(data, 0, sizeof (struct LO_fba_data));
	if (rw == WRITE)
		data->operation.cmd = 0x5;
	else if (rw == READ)
		data->operation.cmd = 0x6;
	else
		data->operation.cmd = 0x8;
	data->blk_nr = block_nr;
	data->blk_ct = block_ct;
}

static int
dasd_fba_check_characteristics(struct dasd_device *device)
{
	struct dasd_block *block;
	struct dasd_fba_private *private;
	struct ccw_device *cdev = device->cdev;
	void *rdc_data;
	int rc;

	private = (struct dasd_fba_private *) device->private;
	if (private == NULL) {
		private = kzalloc(sizeof(struct dasd_fba_private),
				  GFP_KERNEL | GFP_DMA);
		if (private == NULL) {
			dev_warn(&device->cdev->dev,
				 "Allocating memory for private DASD "
				 "data failed\n");
			return -ENOMEM;
		}
		device->private = (void *) private;
	}
	block = dasd_alloc_block();
	if (IS_ERR(block)) {
		DBF_EVENT(DBF_WARNING, "could not allocate dasd block "
			  "structure for device: %s",
			  dev_name(&device->cdev->dev));
		device->private = NULL;
		kfree(private);
		return PTR_ERR(block);
	}
	device->block = block;
	block->base = device;

	/* Read Device Characteristics */
	rdc_data = (void *) &(private->rdc_data);
	rc = dasd_generic_read_dev_chars(device, "FBA ", &rdc_data, 32);
	if (rc) {
		DBF_EVENT(DBF_WARNING, "Read device characteristics returned "
			  "error %d for device: %s",
			  rc, dev_name(&device->cdev->dev));
		device->block = NULL;
		dasd_free_block(block);
		device->private = NULL;
		kfree(private);
		return rc;
	}

	dev_info(&device->cdev->dev,
		 "New FBA DASD %04X/%02X (CU %04X/%02X) with %d MB "
		 "and %d B/blk\n",
		 cdev->id.dev_type,
		 cdev->id.dev_model,
		 cdev->id.cu_type,
		 cdev->id.cu_model,
		 ((private->rdc_data.blk_bdsa *
		   (private->rdc_data.blk_size >> 9)) >> 11),
		 private->rdc_data.blk_size);
	return 0;
}

static int dasd_fba_do_analysis(struct dasd_block *block)
{
	struct dasd_fba_private *private;
	int sb, rc;

	private = (struct dasd_fba_private *) block->base->private;
	rc = dasd_check_blocksize(private->rdc_data.blk_size);
	if (rc) {
		DBF_DEV_EVENT(DBF_WARNING, block->base, "unknown blocksize %d",
			    private->rdc_data.blk_size);
		return rc;
	}
	block->blocks = private->rdc_data.blk_bdsa;
	block->bp_block = private->rdc_data.blk_size;
	block->s2b_shift = 0;	/* bits to shift 512 to get a block */
	for (sb = 512; sb < private->rdc_data.blk_size; sb = sb << 1)
		block->s2b_shift++;
	return 0;
}

static int dasd_fba_fill_geometry(struct dasd_block *block,
				  struct hd_geometry *geo)
{
	if (dasd_check_blocksize(block->bp_block) != 0)
		return -EINVAL;
	geo->cylinders = (block->blocks << block->s2b_shift) >> 10;
	geo->heads = 16;
	geo->sectors = 128 >> block->s2b_shift;
	return 0;
}

static dasd_erp_fn_t
dasd_fba_erp_action(struct dasd_ccw_req * cqr)
{
	return dasd_default_erp_action;
}

static dasd_erp_fn_t
dasd_fba_erp_postaction(struct dasd_ccw_req * cqr)
{
	if (cqr->function == dasd_default_erp_action)
		return dasd_default_erp_postaction;

	DBF_DEV_EVENT(DBF_WARNING, cqr->startdev, "unknown ERP action %p",
		    cqr->function);
	return NULL;
}

static void dasd_fba_handle_unsolicited_interrupt(struct dasd_device *device,
						   struct irb *irb)
{
	char mask;

	/* first of all check for state change pending interrupt */
	mask = DEV_STAT_ATTENTION | DEV_STAT_DEV_END | DEV_STAT_UNIT_EXCEP;
	if ((irb->scsw.cmd.dstat & mask) == mask) {
		dasd_generic_handle_state_change(device);
		return;
	}

	/* check for unsolicited interrupts */
	DBF_DEV_EVENT(DBF_WARNING, device, "%s",
		    "unsolicited interrupt received");
	device->discipline->dump_sense_dbf(device, NULL, irb, "unsolicited");
	dasd_schedule_device_bh(device);
	return;
};

static struct dasd_ccw_req *dasd_fba_build_cp(struct dasd_device * memdev,
					      struct dasd_block *block,
					      struct request *req)
{
	struct dasd_fba_private *private;
	unsigned long *idaws;
	struct LO_fba_data *LO_data;
	struct dasd_ccw_req *cqr;
	struct ccw1 *ccw;
	struct req_iterator iter;
	struct bio_vec *bv;
	char *dst;
	int count, cidaw, cplength, datasize;
	sector_t recid, first_rec, last_rec;
	unsigned int blksize, off;
	unsigned char cmd;

	private = (struct dasd_fba_private *) block->base->private;
	if (rq_data_dir(req) == READ) {
		cmd = DASD_FBA_CCW_READ;
	} else if (rq_data_dir(req) == WRITE) {
		cmd = DASD_FBA_CCW_WRITE;
	} else
		return ERR_PTR(-EINVAL);
	blksize = block->bp_block;
	/* Calculate record id of first and last block. */
	first_rec = blk_rq_pos(req) >> block->s2b_shift;
	last_rec =
		(blk_rq_pos(req) + blk_rq_sectors(req) - 1) >> block->s2b_shift;
	/* Check struct bio and count the number of blocks for the request. */
	count = 0;
	cidaw = 0;
	rq_for_each_segment(bv, req, iter) {
		if (bv->bv_len & (blksize - 1))
			/* Fba can only do full blocks. */
			return ERR_PTR(-EINVAL);
		count += bv->bv_len >> (block->s2b_shift + 9);
#if defined(CONFIG_64BIT)
		if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
			cidaw += bv->bv_len / blksize;
#endif
	}
	/* Paranoia. */
	if (count != last_rec - first_rec + 1)
		return ERR_PTR(-EINVAL);
	/* 1x define extent + 1x locate record + number of blocks */
	cplength = 2 + count;
	/* 1x define extent + 1x locate record */
	datasize = sizeof(struct DE_fba_data) + sizeof(struct LO_fba_data) +
		cidaw * sizeof(unsigned long);
	/*
	 * Find out number of additional locate record ccws if the device
	 * can't do data chaining.
	 */
	if (private->rdc_data.mode.bits.data_chain == 0) {
		cplength += count - 1;
		datasize += (count - 1)*sizeof(struct LO_fba_data);
	}
	/* Allocate the ccw request. */
	cqr = dasd_smalloc_request(dasd_fba_discipline.name,
				   cplength, datasize, memdev);
	if (IS_ERR(cqr))
		return cqr;
	ccw = cqr->cpaddr;
	/* First ccw is define extent. */
	define_extent(ccw++, cqr->data, rq_data_dir(req),
		      block->bp_block, blk_rq_pos(req), blk_rq_sectors(req));
	/* Build locate_record + read/write ccws. */
	idaws = (unsigned long *) (cqr->data + sizeof(struct DE_fba_data));
	LO_data = (struct LO_fba_data *) (idaws + cidaw);
	/* Locate record for all blocks for smart devices. */
	if (private->rdc_data.mode.bits.data_chain != 0) {
		ccw[-1].flags |= CCW_FLAG_CC;
		locate_record(ccw++, LO_data++, rq_data_dir(req), 0, count);
	}
	recid = first_rec;
	rq_for_each_segment(bv, req, iter) {
		dst = page_address(bv->bv_page) + bv->bv_offset;
		if (dasd_page_cache) {
			char *copy = kmem_cache_alloc(dasd_page_cache,
						      GFP_DMA | __GFP_NOWARN);
			if (copy && rq_data_dir(req) == WRITE)
				memcpy(copy + bv->bv_offset, dst, bv->bv_len);
			if (copy)
				dst = copy + bv->bv_offset;
		}
		for (off = 0; off < bv->bv_len; off += blksize) {
			/* Locate record for stupid devices. */
			if (private->rdc_data.mode.bits.data_chain == 0) {
				ccw[-1].flags |= CCW_FLAG_CC;
				locate_record(ccw, LO_data++,
					      rq_data_dir(req),
					      recid - first_rec, 1);
				ccw->flags = CCW_FLAG_CC;
				ccw++;
			} else {
				if (recid > first_rec)
					ccw[-1].flags |= CCW_FLAG_DC;
				else
					ccw[-1].flags |= CCW_FLAG_CC;
			}
			ccw->cmd_code = cmd;
			ccw->count = block->bp_block;
			if (idal_is_needed(dst, blksize)) {
				ccw->cda = (__u32)(addr_t) idaws;
				ccw->flags = CCW_FLAG_IDA;
				idaws = idal_create_words(idaws, dst, blksize);
			} else {
				ccw->cda = (__u32)(addr_t) dst;
				ccw->flags = 0;
			}
			ccw++;
			dst += blksize;
			recid++;
		}
	}
	if (blk_noretry_request(req) ||
	    block->base->features & DASD_FEATURE_FAILFAST)
		set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
	cqr->startdev = memdev;
	cqr->memdev = memdev;
	cqr->block = block;
	cqr->expires = 5 * 60 * HZ;	/* 5 minutes */
	cqr->retries = 32;
	cqr->buildclk = get_clock();
	cqr->status = DASD_CQR_FILLED;
	return cqr;
}

static int
dasd_fba_free_cp(struct dasd_ccw_req *cqr, struct request *req)
{
	struct dasd_fba_private *private;
	struct ccw1 *ccw;
	struct req_iterator iter;
	struct bio_vec *bv;
	char *dst, *cda;
	unsigned int blksize, off;
	int status;

	if (!dasd_page_cache)
		goto out;
	private = (struct dasd_fba_private *) cqr->block->base->private;
	blksize = cqr->block->bp_block;
	ccw = cqr->cpaddr;
	/* Skip over define extent & locate record. */
	ccw++;
	if (private->rdc_data.mode.bits.data_chain != 0)
		ccw++;
	rq_for_each_segment(bv, req, iter) {
		dst = page_address(bv->bv_page) + bv->bv_offset;
		for (off = 0; off < bv->bv_len; off += blksize) {
			/* Skip locate record. */
			if (private->rdc_data.mode.bits.data_chain == 0)
				ccw++;
			if (dst) {
				if (ccw->flags & CCW_FLAG_IDA)
					cda = *((char **)((addr_t) ccw->cda));
				else
					cda = (char *)((addr_t) ccw->cda);
				if (dst != cda) {
					if (rq_data_dir(req) == READ)
						memcpy(dst, cda, bv->bv_len);
					kmem_cache_free(dasd_page_cache,
					    (void *)((addr_t)cda & PAGE_MASK));
				}
				dst = NULL;
			}
			ccw++;
		}
	}
out:
	status = cqr->status == DASD_CQR_DONE;
	dasd_sfree_request(cqr, cqr->memdev);
	return status;
}

static void dasd_fba_handle_terminated_request(struct dasd_ccw_req *cqr)
{
	cqr->status = DASD_CQR_FILLED;
};

static int
dasd_fba_fill_info(struct dasd_device * device,
		   struct dasd_information2_t * info)
{
	info->label_block = 1;
	info->FBA_layout = 1;
	info->format = DASD_FORMAT_LDL;
	info->characteristics_size = sizeof(struct dasd_fba_characteristics);
	memcpy(info->characteristics,
	       &((struct dasd_fba_private *) device->private)->rdc_data,
	       sizeof (struct dasd_fba_characteristics));
	info->confdata_size = 0;
	return 0;
}

static void
dasd_fba_dump_sense_dbf(struct dasd_device *device, struct dasd_ccw_req *req,
			 struct irb *irb, char *reason)
{
	int sl;
	if (irb->esw.esw0.erw.cons) {
		for (sl = 0; sl < 4; sl++) {
			DBF_DEV_EVENT(DBF_EMERG, device,
				      "%s: %08x %08x %08x %08x",
				      reason, irb->ecw[8 * 0], irb->ecw[8 * 1],
				      irb->ecw[8 * 2], irb->ecw[8 * 3]);
		}
	} else {
		DBF_DEV_EVENT(DBF_EMERG, device, "%s",
			      "SORRY - NO VALID SENSE AVAILABLE\n");
	}
}


static void
dasd_fba_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;

	page = (char *) get_zeroed_page(GFP_ATOMIC);
	if (page == NULL) {
		DBF_DEV_EVENT(DBF_WARNING, device, "%s",
			    "No memory to dump sense data");
		return;
	}
	len = sprintf(page, KERN_ERR PRINTK_HEADER
		      " I/O status report for device %s:\n",
		      dev_name(&device->cdev->dev));
	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
		       " in req: %p CS: 0x%02X DS: 0x%02X\n", req,
		       irb->scsw.cmd.cstat, irb->scsw.cmd.dstat);
	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
		       " device %s: Failing CCW: %p\n",
		       dev_name(&device->cdev->dev),
		       (void *) (addr_t) irb->scsw.cmd.cpa);
	if (irb->esw.esw0.erw.cons) {
		for (sl = 0; sl < 4; sl++) {
			len += sprintf(page + len, KERN_ERR PRINTK_HEADER
				       " Sense(hex) %2d-%2d:",
				       (8 * sl), ((8 * sl) + 7));

			for (sct = 0; sct < 8; sct++) {
				len += sprintf(page + len, " %02x",
					       irb->ecw[8 * sl + sct]);
			}
			len += sprintf(page + len, "\n");
		}
	} else {
	        len += sprintf(page + len, KERN_ERR PRINTK_HEADER
			       " SORRY - NO VALID SENSE AVAILABLE\n");
	}
	printk(KERN_ERR "%s", page);

	/* 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
		      " 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++;
	}
	printk(KERN_ERR "%s", page);


	/* print failing CCW area */
	len = 0;
	if (act <  ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2) {
		act = ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2;
		len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
	}
	end = min((struct ccw1 *)(addr_t) irb->scsw.cmd.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++;
	}

	/* print last CCWs */
	if (act <  last - 2) {
		act = last - 2;
		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++;
	}
	if (len > 0)
		printk(KERN_ERR "%s", page);
	free_page((unsigned long) page);
}

/*
 * max_blocks is dependent on the amount of storage that is available
 * in the static io buffer for each device. Currently each device has
 * 8192 bytes (=2 pages). For 64 bit one dasd_mchunkt_t structure has
 * 24 bytes, the struct dasd_ccw_req has 136 bytes and each block can use
 * up to 16 bytes (8 for the ccw and 8 for the idal pointer). In
 * addition we have one define extent ccw + 16 bytes of data and a
 * locate record ccw for each block (stupid devices!) + 16 bytes of data.
 * That makes:
 * (8192 - 24 - 136 - 8 - 16) / 40 = 200.2 blocks at maximum.
 * We want to fit two into the available memory so that we can immediately
 * start the next request if one finishes off. That makes 100.1 blocks
 * for one request. Give a little safety and the result is 96.
 */
static struct dasd_discipline dasd_fba_discipline = {
	.owner = THIS_MODULE,
	.name = "FBA ",
	.ebcname = "FBA ",
	.max_blocks = 96,
	.check_device = dasd_fba_check_characteristics,
	.do_analysis = dasd_fba_do_analysis,
	.fill_geometry = dasd_fba_fill_geometry,
	.start_IO = dasd_start_IO,
	.term_IO = dasd_term_IO,
	.handle_terminated_request = dasd_fba_handle_terminated_request,
	.erp_action = dasd_fba_erp_action,
	.erp_postaction = dasd_fba_erp_postaction,
	.handle_unsolicited_interrupt = dasd_fba_handle_unsolicited_interrupt,
	.build_cp = dasd_fba_build_cp,
	.free_cp = dasd_fba_free_cp,
	.dump_sense = dasd_fba_dump_sense,
	.dump_sense_dbf = dasd_fba_dump_sense_dbf,
	.fill_info = dasd_fba_fill_info,
};

static int __init
dasd_fba_init(void)
{
	ASCEBC(dasd_fba_discipline.ebcname, 4);
	return ccw_driver_register(&dasd_fba_driver);
}

static void __exit
dasd_fba_cleanup(void)
{
	ccw_driver_unregister(&dasd_fba_driver);
}

module_init(dasd_fba_init);
module_exit(dasd_fba_cleanup);
Commit	Line	Data
138c014d	1	/*
1da177e4 LT	2	* File...........: linux/drivers/s390/block/dasd_fba.c
	3	* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
	4	* Bugreports.to..: <Linux390@de.ibm.com>
	5	* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
	6	*
1da177e4 LT	7	*/
1da177e4 LT	8
fc19f381 SH	9	#define KMSG_COMPONENT "dasd"
fc19f381 SH	10
1da177e4 LT	11	#include <linux/stddef.h>
	12	#include <linux/kernel.h>
	13	#include <asm/debug.h>
	14
	15	#include <linux/slab.h>
	16	#include <linux/hdreg.h> /* HDIO_GETGEO */
	17	#include <linux/bio.h>
	18	#include <linux/module.h>
	19	#include <linux/init.h>
	20
	21	#include <asm/idals.h>
	22	#include <asm/ebcdic.h>
	23	#include <asm/io.h>
	24	#include <asm/todclk.h>
	25	#include <asm/ccwdev.h>
	26
	27	#include "dasd_int.h"
	28	#include "dasd_fba.h"
	29
	30	#ifdef PRINTK_HEADER
	31	#undef PRINTK_HEADER
	32	#endif /* PRINTK_HEADER */
	33	#define PRINTK_HEADER "dasd(fba):"
	34
	35	#define DASD_FBA_CCW_WRITE 0x41
	36	#define DASD_FBA_CCW_READ 0x42
	37	#define DASD_FBA_CCW_LOCATE 0x43
	38	#define DASD_FBA_CCW_DEFINE_EXTENT 0x63
	39
	40	MODULE_LICENSE("GPL");
	41
	42	static struct dasd_discipline dasd_fba_discipline;
	43
	44	struct dasd_fba_private {
	45	struct dasd_fba_characteristics rdc_data;
	46	};
	47
	48	static struct ccw_device_id dasd_fba_ids[] = {
d2c993d8 HC	49	{ CCW_DEVICE_DEVTYPE (0x6310, 0, 0x9336, 0), .driver_info = 0x1},
d2c993d8 HC	50	{ CCW_DEVICE_DEVTYPE (0x3880, 0, 0x3370, 0), .driver_info = 0x2},
1da177e4 LT	51	{ /* end of list */ },
	52	};
	53
	54	MODULE_DEVICE_TABLE(ccw, dasd_fba_ids);
	55
	56	static struct ccw_driver dasd_fba_driver; /* see below */
	57	static int
	58	dasd_fba_probe(struct ccw_device *cdev)
	59	{
40545573	60	return dasd_generic_probe(cdev, &dasd_fba_discipline);
1da177e4 LT	61	}
	62
	63	static int
	64	dasd_fba_set_online(struct ccw_device *cdev)
	65	{
40545573	66	return dasd_generic_set_online(cdev, &dasd_fba_discipline);
1da177e4 LT	67	}
	68
	69	static struct ccw_driver dasd_fba_driver = {
	70	.name = "dasd-fba",
	71	.owner = THIS_MODULE,
	72	.ids = dasd_fba_ids,
	73	.probe = dasd_fba_probe,
	74	.remove = dasd_generic_remove,
	75	.set_offline = dasd_generic_set_offline,
	76	.set_online = dasd_fba_set_online,
	77	.notify = dasd_generic_notify,
	78	};
	79
4d284cac	80	static void
1da177e4 LT	81	define_extent(struct ccw1 * ccw, struct DE_fba_data *data, int rw,
	82	int blksize, int beg, int nr)
	83	{
	84	ccw->cmd_code = DASD_FBA_CCW_DEFINE_EXTENT;
	85	ccw->flags = 0;
	86	ccw->count = 16;
	87	ccw->cda = (__u32) __pa(data);
	88	memset(data, 0, sizeof (struct DE_fba_data));
	89	if (rw == WRITE)
	90	(data->mask).perm = 0x0;
	91	else if (rw == READ)
	92	(data->mask).perm = 0x1;
	93	else
	94	data->mask.perm = 0x2;
	95	data->blk_size = blksize;
	96	data->ext_loc = beg;
	97	data->ext_end = nr - 1;
	98	}
	99
4d284cac	100	static void
1da177e4 LT	101	locate_record(struct ccw1 * ccw, struct LO_fba_data *data, int rw,
	102	int block_nr, int block_ct)
	103	{
	104	ccw->cmd_code = DASD_FBA_CCW_LOCATE;
	105	ccw->flags = 0;
	106	ccw->count = 8;
	107	ccw->cda = (__u32) __pa(data);
	108	memset(data, 0, sizeof (struct LO_fba_data));
	109	if (rw == WRITE)
	110	data->operation.cmd = 0x5;
	111	else if (rw == READ)
	112	data->operation.cmd = 0x6;
	113	else
	114	data->operation.cmd = 0x8;
	115	data->blk_nr = block_nr;
	116	data->blk_ct = block_ct;
	117	}
	118
	119	static int
	120	dasd_fba_check_characteristics(struct dasd_device *device)
	121	{
8e09f215	122	struct dasd_block *block;
1da177e4	123	struct dasd_fba_private *private;
138c014d	124	struct ccw_device *cdev = device->cdev;
1da177e4 LT	125	void *rdc_data;
	126	int rc;
	127
	128	private = (struct dasd_fba_private *) device->private;
	129	if (private == NULL) {
00966c0a SH	130	private = kzalloc(sizeof(struct dasd_fba_private),
00966c0a SH	131	GFP_KERNEL \| GFP_DMA);
1da177e4	132	if (private == NULL) {
fc19f381 SH	133	dev_warn(&device->cdev->dev,
	134	"Allocating memory for private DASD "
	135	"data failed\n");
1da177e4 LT	136	return -ENOMEM;
	137	}
	138	device->private = (void *) private;
	139	}
8e09f215 SW	140	block = dasd_alloc_block();
8e09f215 SW	141	if (IS_ERR(block)) {
fc19f381 SH	142	DBF_EVENT(DBF_WARNING, "could not allocate dasd block "
	143	"structure for device: %s",
	144	dev_name(&device->cdev->dev));
7337194f CH	145	device->private = NULL;
7337194f CH	146	kfree(private);
8e09f215 SW	147	return PTR_ERR(block);
	148	}
	149	device->block = block;
	150	block->base = device;
	151
1da177e4 LT	152	/* Read Device Characteristics */
1da177e4 LT	153	rdc_data = (void *) &(private->rdc_data);
17283b56	154	rc = dasd_generic_read_dev_chars(device, "FBA ", &rdc_data, 32);
1da177e4	155	if (rc) {
fc19f381 SH	156	DBF_EVENT(DBF_WARNING, "Read device characteristics returned "
	157	"error %d for device: %s",
	158	rc, dev_name(&device->cdev->dev));
7337194f CH	159	device->block = NULL;
	160	dasd_free_block(block);
	161	device->private = NULL;
	162	kfree(private);
1da177e4 LT	163	return rc;
	164	}
	165
fc19f381 SH	166	dev_info(&device->cdev->dev,
	167	"New FBA DASD %04X/%02X (CU %04X/%02X) with %d MB "
	168	"and %d B/blk\n",
	169	cdev->id.dev_type,
	170	cdev->id.dev_model,
	171	cdev->id.cu_type,
	172	cdev->id.cu_model,
	173	((private->rdc_data.blk_bdsa *
	174	(private->rdc_data.blk_size >> 9)) >> 11),
	175	private->rdc_data.blk_size);
1da177e4 LT	176	return 0;
	177	}
	178
8e09f215	179	static int dasd_fba_do_analysis(struct dasd_block *block)
1da177e4 LT	180	{
	181	struct dasd_fba_private *private;
	182	int sb, rc;
	183
8e09f215	184	private = (struct dasd_fba_private *) block->base->private;
1da177e4 LT	185	rc = dasd_check_blocksize(private->rdc_data.blk_size);
1da177e4 LT	186	if (rc) {
fc19f381	187	DBF_DEV_EVENT(DBF_WARNING, block->base, "unknown blocksize %d",
1da177e4 LT	188	private->rdc_data.blk_size);
	189	return rc;
	190	}
8e09f215 SW	191	block->blocks = private->rdc_data.blk_bdsa;
	192	block->bp_block = private->rdc_data.blk_size;
	193	block->s2b_shift = 0; /* bits to shift 512 to get a block */
1da177e4	194	for (sb = 512; sb < private->rdc_data.blk_size; sb = sb << 1)
8e09f215	195	block->s2b_shift++;
1da177e4 LT	196	return 0;
	197	}
	198
8e09f215 SW	199	static int dasd_fba_fill_geometry(struct dasd_block *block,
8e09f215 SW	200	struct hd_geometry *geo)
1da177e4	201	{
8e09f215	202	if (dasd_check_blocksize(block->bp_block) != 0)
1da177e4	203	return -EINVAL;
8e09f215	204	geo->cylinders = (block->blocks << block->s2b_shift) >> 10;
1da177e4	205	geo->heads = 16;
8e09f215	206	geo->sectors = 128 >> block->s2b_shift;
1da177e4 LT	207	return 0;
	208	}
	209
1da177e4 LT	210	static dasd_erp_fn_t
	211	dasd_fba_erp_action(struct dasd_ccw_req * cqr)
	212	{
	213	return dasd_default_erp_action;
	214	}
	215
	216	static dasd_erp_fn_t
	217	dasd_fba_erp_postaction(struct dasd_ccw_req * cqr)
	218	{
	219	if (cqr->function == dasd_default_erp_action)
	220	return dasd_default_erp_postaction;
	221
fc19f381	222	DBF_DEV_EVENT(DBF_WARNING, cqr->startdev, "unknown ERP action %p",
1da177e4 LT	223	cqr->function);
	224	return NULL;
	225	}
	226
8e09f215 SW	227	static void dasd_fba_handle_unsolicited_interrupt(struct dasd_device *device,
	228	struct irb *irb)
	229	{
	230	char mask;
	231
	232	/* first of all check for state change pending interrupt */
	233	mask = DEV_STAT_ATTENTION \| DEV_STAT_DEV_END \| DEV_STAT_UNIT_EXCEP;
23d805b6	234	if ((irb->scsw.cmd.dstat & mask) == mask) {
8e09f215 SW	235	dasd_generic_handle_state_change(device);
	236	return;
	237	}
	238
	239	/* check for unsolicited interrupts */
fc19f381	240	DBF_DEV_EVENT(DBF_WARNING, device, "%s",
8e09f215	241	"unsolicited interrupt received");
fc19f381	242	device->discipline->dump_sense_dbf(device, NULL, irb, "unsolicited");
8e09f215 SW	243	dasd_schedule_device_bh(device);
	244	return;
	245	};
	246
	247	static struct dasd_ccw_req dasd_fba_build_cp(struct dasd_device memdev,
	248	struct dasd_block *block,
	249	struct request *req)
1da177e4 LT	250	{
	251	struct dasd_fba_private *private;
	252	unsigned long *idaws;
	253	struct LO_fba_data *LO_data;
	254	struct dasd_ccw_req *cqr;
	255	struct ccw1 *ccw;
5705f702	256	struct req_iterator iter;
1da177e4 LT	257	struct bio_vec *bv;
	258	char *dst;
	259	int count, cidaw, cplength, datasize;
	260	sector_t recid, first_rec, last_rec;
	261	unsigned int blksize, off;
	262	unsigned char cmd;
1da177e4	263
8e09f215	264	private = (struct dasd_fba_private *) block->base->private;
1da177e4 LT	265	if (rq_data_dir(req) == READ) {
	266	cmd = DASD_FBA_CCW_READ;
	267	} else if (rq_data_dir(req) == WRITE) {
	268	cmd = DASD_FBA_CCW_WRITE;
	269	} else
	270	return ERR_PTR(-EINVAL);
8e09f215	271	blksize = block->bp_block;
1da177e4	272	/* Calculate record id of first and last block. */
83096ebf TH	273	first_rec = blk_rq_pos(req) >> block->s2b_shift;
	274	last_rec =
	275	(blk_rq_pos(req) + blk_rq_sectors(req) - 1) >> block->s2b_shift;
1da177e4 LT	276	/* Check struct bio and count the number of blocks for the request. */
	277	count = 0;
	278	cidaw = 0;
5705f702	279	rq_for_each_segment(bv, req, iter) {
6c92e699 JA	280	if (bv->bv_len & (blksize - 1))
	281	/* Fba can only do full blocks. */
	282	return ERR_PTR(-EINVAL);
8e09f215	283	count += bv->bv_len >> (block->s2b_shift + 9);
347a8dc3	284	#if defined(CONFIG_64BIT)
6c92e699 JA	285	if (idal_is_needed (page_address(bv->bv_page), bv->bv_len))
6c92e699 JA	286	cidaw += bv->bv_len / blksize;
1da177e4	287	#endif
1da177e4 LT	288	}
	289	/* Paranoia. */
	290	if (count != last_rec - first_rec + 1)
	291	return ERR_PTR(-EINVAL);
	292	/* 1x define extent + 1x locate record + number of blocks */
	293	cplength = 2 + count;
	294	/* 1x define extent + 1x locate record */
	295	datasize = sizeof(struct DE_fba_data) + sizeof(struct LO_fba_data) +
	296	cidaw * sizeof(unsigned long);
	297	/*
	298	* Find out number of additional locate record ccws if the device
	299	* can't do data chaining.
	300	*/
	301	if (private->rdc_data.mode.bits.data_chain == 0) {
	302	cplength += count - 1;
	303	datasize += (count - 1)*sizeof(struct LO_fba_data);
	304	}
	305	/* Allocate the ccw request. */
	306	cqr = dasd_smalloc_request(dasd_fba_discipline.name,
8e09f215	307	cplength, datasize, memdev);
1da177e4 LT	308	if (IS_ERR(cqr))
	309	return cqr;
	310	ccw = cqr->cpaddr;
	311	/* First ccw is define extent. */
	312	define_extent(ccw++, cqr->data, rq_data_dir(req),
83096ebf	313	block->bp_block, blk_rq_pos(req), blk_rq_sectors(req));
1da177e4 LT	314	/* Build locate_record + read/write ccws. */
	315	idaws = (unsigned long *) (cqr->data + sizeof(struct DE_fba_data));
	316	LO_data = (struct LO_fba_data *) (idaws + cidaw);
	317	/* Locate record for all blocks for smart devices. */
	318	if (private->rdc_data.mode.bits.data_chain != 0) {
	319	ccw[-1].flags \|= CCW_FLAG_CC;
	320	locate_record(ccw++, LO_data++, rq_data_dir(req), 0, count);
	321	}
	322	recid = first_rec;
5705f702	323	rq_for_each_segment(bv, req, iter) {
1da177e4 LT	324	dst = page_address(bv->bv_page) + bv->bv_offset;
	325	if (dasd_page_cache) {
	326	char *copy = kmem_cache_alloc(dasd_page_cache,
441e143e	327	GFP_DMA \| __GFP_NOWARN);
1da177e4 LT	328	if (copy && rq_data_dir(req) == WRITE)
	329	memcpy(copy + bv->bv_offset, dst, bv->bv_len);
	330	if (copy)
	331	dst = copy + bv->bv_offset;
	332	}
	333	for (off = 0; off < bv->bv_len; off += blksize) {
	334	/* Locate record for stupid devices. */
	335	if (private->rdc_data.mode.bits.data_chain == 0) {
	336	ccw[-1].flags \|= CCW_FLAG_CC;
	337	locate_record(ccw, LO_data++,
	338	rq_data_dir(req),
	339	recid - first_rec, 1);
	340	ccw->flags = CCW_FLAG_CC;
	341	ccw++;
	342	} else {
	343	if (recid > first_rec)
	344	ccw[-1].flags \|= CCW_FLAG_DC;
	345	else
	346	ccw[-1].flags \|= CCW_FLAG_CC;
	347	}
	348	ccw->cmd_code = cmd;
8e09f215	349	ccw->count = block->bp_block;
1da177e4 LT	350	if (idal_is_needed(dst, blksize)) {
	351	ccw->cda = (__u32)(addr_t) idaws;
	352	ccw->flags = CCW_FLAG_IDA;
	353	idaws = idal_create_words(idaws, dst, blksize);
	354	} else {
	355	ccw->cda = (__u32)(addr_t) dst;
	356	ccw->flags = 0;
	357	}
	358	ccw++;
	359	dst += blksize;
	360	recid++;
	361	}
	362	}
13de227b HS	363	if (blk_noretry_request(req) \|\|
13de227b HS	364	block->base->features & DASD_FEATURE_FAILFAST)
1c01b8a5	365	set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
8e09f215 SW	366	cqr->startdev = memdev;
	367	cqr->memdev = memdev;
	368	cqr->block = block;
1da177e4	369	cqr->expires = 5 * 60 * HZ; /* 5 minutes */
d61f6f3d HH	370	cqr->retries = 32;
d61f6f3d HH	371	cqr->buildclk = get_clock();
1da177e4 LT	372	cqr->status = DASD_CQR_FILLED;
	373	return cqr;
	374	}
	375
	376	static int
	377	dasd_fba_free_cp(struct dasd_ccw_req cqr, struct request req)
	378	{
	379	struct dasd_fba_private *private;
	380	struct ccw1 *ccw;
5705f702	381	struct req_iterator iter;
1da177e4 LT	382	struct bio_vec *bv;
	383	char dst, cda;
	384	unsigned int blksize, off;
5705f702	385	int status;
1da177e4 LT	386
	387	if (!dasd_page_cache)
	388	goto out;
8e09f215 SW	389	private = (struct dasd_fba_private *) cqr->block->base->private;
8e09f215 SW	390	blksize = cqr->block->bp_block;
1da177e4 LT	391	ccw = cqr->cpaddr;
	392	/* Skip over define extent & locate record. */
	393	ccw++;
	394	if (private->rdc_data.mode.bits.data_chain != 0)
	395	ccw++;
5705f702	396	rq_for_each_segment(bv, req, iter) {
1da177e4 LT	397	dst = page_address(bv->bv_page) + bv->bv_offset;
	398	for (off = 0; off < bv->bv_len; off += blksize) {
	399	/* Skip locate record. */
	400	if (private->rdc_data.mode.bits.data_chain == 0)
	401	ccw++;
	402	if (dst) {
	403	if (ccw->flags & CCW_FLAG_IDA)
	404	cda = ((char *)((addr_t) ccw->cda));
	405	else
	406	cda = (char *)((addr_t) ccw->cda);
	407	if (dst != cda) {
	408	if (rq_data_dir(req) == READ)
	409	memcpy(dst, cda, bv->bv_len);
	410	kmem_cache_free(dasd_page_cache,
	411	(void *)((addr_t)cda & PAGE_MASK));
	412	}
	413	dst = NULL;
	414	}
	415	ccw++;
	416	}
	417	}
	418	out:
	419	status = cqr->status == DASD_CQR_DONE;
8e09f215	420	dasd_sfree_request(cqr, cqr->memdev);
1da177e4 LT	421	return status;
	422	}
	423
8e09f215 SW	424	static void dasd_fba_handle_terminated_request(struct dasd_ccw_req *cqr)
	425	{
	426	cqr->status = DASD_CQR_FILLED;
	427	};
	428
1da177e4 LT	429	static int
	430	dasd_fba_fill_info(struct dasd_device * device,
	431	struct dasd_information2_t * info)
	432	{
	433	info->label_block = 1;
	434	info->FBA_layout = 1;
	435	info->format = DASD_FORMAT_LDL;
	436	info->characteristics_size = sizeof(struct dasd_fba_characteristics);
	437	memcpy(info->characteristics,
	438	&((struct dasd_fba_private *) device->private)->rdc_data,
	439	sizeof (struct dasd_fba_characteristics));
	440	info->confdata_size = 0;
	441	return 0;
	442	}
	443
fc19f381 SH	444	static void
	445	dasd_fba_dump_sense_dbf(struct dasd_device device, struct dasd_ccw_req req,
	446	struct irb irb, char reason)
	447	{
	448	int sl;
	449	if (irb->esw.esw0.erw.cons) {
	450	for (sl = 0; sl < 4; sl++) {
	451	DBF_DEV_EVENT(DBF_EMERG, device,
	452	"%s: %08x %08x %08x %08x",
	453	reason, irb->ecw[8 * 0], irb->ecw[8 * 1],
	454	irb->ecw[8 * 2], irb->ecw[8 * 3]);
	455	}
	456	} else {
	457	DBF_DEV_EVENT(DBF_EMERG, device, "%s",
	458	"SORRY - NO VALID SENSE AVAILABLE\n");
	459	}
	460	}
	461
	462
1da177e4 LT	463	static void
	464	dasd_fba_dump_sense(struct dasd_device device, struct dasd_ccw_req req,
	465	struct irb *irb)
	466	{
	467	char *page;
	468	struct ccw1 act, end, *last;
	469	int len, sl, sct, count;
	470
	471	page = (char *) get_zeroed_page(GFP_ATOMIC);
	472	if (page == NULL) {
fc19f381	473	DBF_DEV_EVENT(DBF_WARNING, device, "%s",
1da177e4 LT	474	"No memory to dump sense data");
	475	return;
	476	}
	477	len = sprintf(page, KERN_ERR PRINTK_HEADER
	478	" I/O status report for device %s:\n",
2a0217d5	479	dev_name(&device->cdev->dev));
1da177e4 LT	480	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
1da177e4 LT	481	" in req: %p CS: 0x%02X DS: 0x%02X\n", req,
23d805b6	482	irb->scsw.cmd.cstat, irb->scsw.cmd.dstat);
1da177e4 LT	483	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
1da177e4 LT	484	" device %s: Failing CCW: %p\n",
2a0217d5	485	dev_name(&device->cdev->dev),
23d805b6	486	(void *) (addr_t) irb->scsw.cmd.cpa);
1da177e4 LT	487	if (irb->esw.esw0.erw.cons) {
	488	for (sl = 0; sl < 4; sl++) {
	489	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
	490	" Sense(hex) %2d-%2d:",
	491	(8 * sl), ((8 * sl) + 7));
	492
	493	for (sct = 0; sct < 8; sct++) {
	494	len += sprintf(page + len, " %02x",
	495	irb->ecw[8 * sl + sct]);
	496	}
	497	len += sprintf(page + len, "\n");
	498	}
	499	} else {
	500	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
	501	" SORRY - NO VALID SENSE AVAILABLE\n");
	502	}
fc19f381	503	printk(KERN_ERR "%s", page);
1da177e4 LT	504
	505	/* dump the Channel Program */
	506	/* print first CCWs (maximum 8) */
	507	act = req->cpaddr;
	508	for (last = act; last->flags & (CCW_FLAG_CC \| CCW_FLAG_DC); last++);
	509	end = min(act + 8, last);
	510	len = sprintf(page, KERN_ERR PRINTK_HEADER
	511	" Related CP in req: %p\n", req);
	512	while (act <= end) {
	513	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
	514	" CCW %p: %08X %08X DAT:",
	515	act, ((int ) act)[0], ((int ) act)[1]);
	516	for (count = 0; count < 32 && count < act->count;
	517	count += sizeof(int))
	518	len += sprintf(page + len, " %08X",
	519	((int *) (addr_t) act->cda)
	520	[(count>>2)]);
	521	len += sprintf(page + len, "\n");
	522	act++;
	523	}
fc19f381	524	printk(KERN_ERR "%s", page);
1da177e4 LT	525
	526
	527	/* print failing CCW area */
	528	len = 0;
23d805b6 PO	529	if (act < ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2) {
23d805b6 PO	530	act = ((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa) - 2;
1da177e4 LT	531	len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
1da177e4 LT	532	}
23d805b6	533	end = min((struct ccw1 *)(addr_t) irb->scsw.cmd.cpa + 2, last);
1da177e4 LT	534	while (act <= end) {
	535	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
	536	" CCW %p: %08X %08X DAT:",
	537	act, ((int ) act)[0], ((int ) act)[1]);
	538	for (count = 0; count < 32 && count < act->count;
	539	count += sizeof(int))
	540	len += sprintf(page + len, " %08X",
	541	((int *) (addr_t) act->cda)
	542	[(count>>2)]);
	543	len += sprintf(page + len, "\n");
	544	act++;
	545	}
	546
	547	/* print last CCWs */
	548	if (act < last - 2) {
	549	act = last - 2;
	550	len += sprintf(page + len, KERN_ERR PRINTK_HEADER "......\n");
	551	}
	552	while (act <= last) {
	553	len += sprintf(page + len, KERN_ERR PRINTK_HEADER
	554	" CCW %p: %08X %08X DAT:",
	555	act, ((int ) act)[0], ((int ) act)[1]);
	556	for (count = 0; count < 32 && count < act->count;
	557	count += sizeof(int))
	558	len += sprintf(page + len, " %08X",
	559	((int *) (addr_t) act->cda)
	560	[(count>>2)]);
	561	len += sprintf(page + len, "\n");
	562	act++;
	563	}
	564	if (len > 0)
fc19f381	565	printk(KERN_ERR "%s", page);
1da177e4 LT	566	free_page((unsigned long) page);
	567	}
	568
	569	/*
	570	* max_blocks is dependent on the amount of storage that is available
	571	* in the static io buffer for each device. Currently each device has
	572	* 8192 bytes (=2 pages). For 64 bit one dasd_mchunkt_t structure has
	573	* 24 bytes, the struct dasd_ccw_req has 136 bytes and each block can use
	574	* up to 16 bytes (8 for the ccw and 8 for the idal pointer). In
138c014d	575	* addition we have one define extent ccw + 16 bytes of data and a
1da177e4 LT	576	* locate record ccw for each block (stupid devices!) + 16 bytes of data.
	577	* That makes:
	578	* (8192 - 24 - 136 - 8 - 16) / 40 = 200.2 blocks at maximum.
	579	* We want to fit two into the available memory so that we can immediately
	580	* start the next request if one finishes off. That makes 100.1 blocks
	581	* for one request. Give a little safety and the result is 96.
	582	*/
	583	static struct dasd_discipline dasd_fba_discipline = {
	584	.owner = THIS_MODULE,
	585	.name = "FBA ",
	586	.ebcname = "FBA ",
	587	.max_blocks = 96,
	588	.check_device = dasd_fba_check_characteristics,
	589	.do_analysis = dasd_fba_do_analysis,
	590	.fill_geometry = dasd_fba_fill_geometry,
	591	.start_IO = dasd_start_IO,
	592	.term_IO = dasd_term_IO,
8e09f215	593	.handle_terminated_request = dasd_fba_handle_terminated_request,
1da177e4 LT	594	.erp_action = dasd_fba_erp_action,
1da177e4 LT	595	.erp_postaction = dasd_fba_erp_postaction,
8e09f215	596	.handle_unsolicited_interrupt = dasd_fba_handle_unsolicited_interrupt,
1da177e4 LT	597	.build_cp = dasd_fba_build_cp,
	598	.free_cp = dasd_fba_free_cp,
	599	.dump_sense = dasd_fba_dump_sense,
fc19f381	600	.dump_sense_dbf = dasd_fba_dump_sense_dbf,
1da177e4 LT	601	.fill_info = dasd_fba_fill_info,
	602	};
	603
	604	static int __init
	605	dasd_fba_init(void)
	606	{
1da177e4	607	ASCEBC(dasd_fba_discipline.ebcname, 4);
40545573	608	return ccw_driver_register(&dasd_fba_driver);
1da177e4 LT	609	}
	610
	611	static void __exit
	612	dasd_fba_cleanup(void)
	613	{
	614	ccw_driver_unregister(&dasd_fba_driver);
	615	}
	616
	617	module_init(dasd_fba_init);
	618	module_exit(dasd_fba_cleanup);