[S390] dasd: add High Performance FICON support
To support High Performance FICON, the DASD device driver has to
translate I/O requests into the new transport mode control words (TCW)
instead of the traditional (command mode) CCW requests.
Signed-off-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 69f93e6..1e4c89b 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -27,9 +27,12 @@
#include <asm/uaccess.h>
#include <asm/cio.h>
#include <asm/ccwdev.h>
+#include <asm/itcw.h>
#include "dasd_int.h"
#include "dasd_eckd.h"
+#include "../cio/chsc.h"
+
#ifdef PRINTK_HEADER
#undef PRINTK_HEADER
@@ -245,7 +248,8 @@
rc = check_XRC (ccw, data, device);
break;
default:
- DEV_MESSAGE(KERN_ERR, device, "unknown opcode 0x%x", cmd);
+ DBF_DEV_EVENT(DBF_ERR, device,
+ "PFX LRE unknown opcode 0x%x", cmd);
break;
}
@@ -289,30 +293,145 @@
return 0;
/* switch on System Time Stamp - needed for XRC Support */
- pfxdata->define_extend.ga_extended |= 0x08; /* 'Time Stamp Valid' */
- pfxdata->define_extend.ga_extended |= 0x02; /* 'Extended Parameter' */
+ pfxdata->define_extent.ga_extended |= 0x08; /* 'Time Stamp Valid' */
+ pfxdata->define_extent.ga_extended |= 0x02; /* 'Extended Parameter' */
pfxdata->validity.time_stamp = 1; /* 'Time Stamp Valid' */
- rc = get_sync_clock(&pfxdata->define_extend.ep_sys_time);
+ rc = get_sync_clock(&pfxdata->define_extent.ep_sys_time);
/* Ignore return code if sync clock is switched off. */
if (rc == -ENOSYS || rc == -EACCES)
rc = 0;
return rc;
}
-static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata,
- unsigned int trk, unsigned int totrk, int cmd,
- struct dasd_device *basedev, struct dasd_device *startdev)
+static void fill_LRE_data(struct LRE_eckd_data *data, unsigned int trk,
+ unsigned int rec_on_trk, int count, int cmd,
+ struct dasd_device *device, unsigned int reclen,
+ unsigned int tlf)
+{
+ struct dasd_eckd_private *private;
+ int sector;
+ int dn, d;
+
+ private = (struct dasd_eckd_private *) device->private;
+
+ memset(data, 0, sizeof(*data));
+ sector = 0;
+ if (rec_on_trk) {
+ switch (private->rdc_data.dev_type) {
+ case 0x3390:
+ dn = ceil_quot(reclen + 6, 232);
+ d = 9 + ceil_quot(reclen + 6 * (dn + 1), 34);
+ sector = (49 + (rec_on_trk - 1) * (10 + d)) / 8;
+ break;
+ case 0x3380:
+ d = 7 + ceil_quot(reclen + 12, 32);
+ sector = (39 + (rec_on_trk - 1) * (8 + d)) / 7;
+ break;
+ }
+ }
+ data->sector = sector;
+ /* note: meaning of count depends on the operation
+ * for record based I/O it's the number of records, but for
+ * track based I/O it's the number of tracks
+ */
+ data->count = count;
+ switch (cmd) {
+ case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
+ data->operation.orientation = 0x3;
+ data->operation.operation = 0x03;
+ break;
+ case DASD_ECKD_CCW_READ_HOME_ADDRESS:
+ data->operation.orientation = 0x3;
+ data->operation.operation = 0x16;
+ break;
+ case DASD_ECKD_CCW_WRITE_RECORD_ZERO:
+ data->operation.orientation = 0x1;
+ data->operation.operation = 0x03;
+ data->count++;
+ break;
+ case DASD_ECKD_CCW_READ_RECORD_ZERO:
+ data->operation.orientation = 0x3;
+ data->operation.operation = 0x16;
+ data->count++;
+ break;
+ case DASD_ECKD_CCW_WRITE:
+ case DASD_ECKD_CCW_WRITE_MT:
+ case DASD_ECKD_CCW_WRITE_KD:
+ case DASD_ECKD_CCW_WRITE_KD_MT:
+ data->auxiliary.length_valid = 0x1;
+ data->length = reclen;
+ data->operation.operation = 0x01;
+ break;
+ case DASD_ECKD_CCW_WRITE_CKD:
+ case DASD_ECKD_CCW_WRITE_CKD_MT:
+ data->auxiliary.length_valid = 0x1;
+ data->length = reclen;
+ data->operation.operation = 0x03;
+ break;
+ case DASD_ECKD_CCW_WRITE_TRACK_DATA:
+ data->auxiliary.length_valid = 0x1;
+ data->length = reclen; /* not tlf, as one might think */
+ data->operation.operation = 0x3F;
+ data->extended_operation = 0x23;
+ break;
+ case DASD_ECKD_CCW_READ:
+ case DASD_ECKD_CCW_READ_MT:
+ case DASD_ECKD_CCW_READ_KD:
+ case DASD_ECKD_CCW_READ_KD_MT:
+ data->auxiliary.length_valid = 0x1;
+ data->length = reclen;
+ data->operation.operation = 0x06;
+ break;
+ case DASD_ECKD_CCW_READ_CKD:
+ case DASD_ECKD_CCW_READ_CKD_MT:
+ data->auxiliary.length_valid = 0x1;
+ data->length = reclen;
+ data->operation.operation = 0x16;
+ break;
+ case DASD_ECKD_CCW_READ_COUNT:
+ data->operation.operation = 0x06;
+ break;
+ case DASD_ECKD_CCW_READ_TRACK_DATA:
+ data->auxiliary.length_valid = 0x1;
+ data->length = tlf;
+ data->operation.operation = 0x0C;
+ break;
+ case DASD_ECKD_CCW_ERASE:
+ data->length = reclen;
+ data->auxiliary.length_valid = 0x1;
+ data->operation.operation = 0x0b;
+ break;
+ default:
+ DBF_DEV_EVENT(DBF_ERR, device,
+ "fill LRE unknown opcode 0x%x", cmd);
+ BUG();
+ }
+ set_ch_t(&data->seek_addr,
+ trk / private->rdc_data.trk_per_cyl,
+ trk % private->rdc_data.trk_per_cyl);
+ data->search_arg.cyl = data->seek_addr.cyl;
+ data->search_arg.head = data->seek_addr.head;
+ data->search_arg.record = rec_on_trk;
+}
+
+static int prefix_LRE(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata,
+ unsigned int trk, unsigned int totrk, int cmd,
+ struct dasd_device *basedev, struct dasd_device *startdev,
+ unsigned char format, unsigned int rec_on_trk, int count,
+ unsigned int blksize, unsigned int tlf)
{
struct dasd_eckd_private *basepriv, *startpriv;
- struct DE_eckd_data *data;
+ struct DE_eckd_data *dedata;
+ struct LRE_eckd_data *lredata;
u32 begcyl, endcyl;
u16 heads, beghead, endhead;
int rc = 0;
basepriv = (struct dasd_eckd_private *) basedev->private;
startpriv = (struct dasd_eckd_private *) startdev->private;
- data = &pfxdata->define_extend;
+ dedata = &pfxdata->define_extent;
+ lredata = &pfxdata->locate_record;
ccw->cmd_code = DASD_ECKD_CCW_PFX;
ccw->flags = 0;
@@ -321,10 +440,16 @@
memset(pfxdata, 0, sizeof(*pfxdata));
/* prefix data */
- pfxdata->format = 0;
+ if (format > 1) {
+ DBF_DEV_EVENT(DBF_ERR, basedev,
+ "PFX LRE unknown format 0x%x", format);
+ BUG();
+ return -EINVAL;
+ }
+ pfxdata->format = format;
pfxdata->base_address = basepriv->ned->unit_addr;
pfxdata->base_lss = basepriv->ned->ID;
- pfxdata->validity.define_extend = 1;
+ pfxdata->validity.define_extent = 1;
/* private uid is kept up to date, conf_data may be outdated */
if (startpriv->uid.type != UA_BASE_DEVICE) {
@@ -344,42 +469,55 @@
case DASD_ECKD_CCW_READ_KD:
case DASD_ECKD_CCW_READ_KD_MT:
case DASD_ECKD_CCW_READ_COUNT:
- data->mask.perm = 0x1;
- data->attributes.operation = basepriv->attrib.operation;
+ dedata->mask.perm = 0x1;
+ dedata->attributes.operation = basepriv->attrib.operation;
+ break;
+ case DASD_ECKD_CCW_READ_TRACK_DATA:
+ dedata->mask.perm = 0x1;
+ dedata->attributes.operation = basepriv->attrib.operation;
+ dedata->blk_size = 0;
break;
case DASD_ECKD_CCW_WRITE:
case DASD_ECKD_CCW_WRITE_MT:
case DASD_ECKD_CCW_WRITE_KD:
case DASD_ECKD_CCW_WRITE_KD_MT:
- data->mask.perm = 0x02;
- data->attributes.operation = basepriv->attrib.operation;
+ dedata->mask.perm = 0x02;
+ dedata->attributes.operation = basepriv->attrib.operation;
rc = check_XRC_on_prefix(pfxdata, basedev);
break;
case DASD_ECKD_CCW_WRITE_CKD:
case DASD_ECKD_CCW_WRITE_CKD_MT:
- data->attributes.operation = DASD_BYPASS_CACHE;
+ dedata->attributes.operation = DASD_BYPASS_CACHE;
rc = check_XRC_on_prefix(pfxdata, basedev);
break;
case DASD_ECKD_CCW_ERASE:
case DASD_ECKD_CCW_WRITE_HOME_ADDRESS:
case DASD_ECKD_CCW_WRITE_RECORD_ZERO:
- data->mask.perm = 0x3;
- data->mask.auth = 0x1;
- data->attributes.operation = DASD_BYPASS_CACHE;
+ dedata->mask.perm = 0x3;
+ dedata->mask.auth = 0x1;
+ dedata->attributes.operation = DASD_BYPASS_CACHE;
+ rc = check_XRC_on_prefix(pfxdata, basedev);
+ break;
+ case DASD_ECKD_CCW_WRITE_TRACK_DATA:
+ dedata->mask.perm = 0x02;
+ dedata->attributes.operation = basepriv->attrib.operation;
+ dedata->blk_size = blksize;
rc = check_XRC_on_prefix(pfxdata, basedev);
break;
default:
- DEV_MESSAGE(KERN_ERR, basedev, "unknown opcode 0x%x", cmd);
- break;
+ DBF_DEV_EVENT(DBF_ERR, basedev,
+ "PFX LRE unknown opcode 0x%x", cmd);
+ BUG();
+ return -EINVAL;
}
- data->attributes.mode = 0x3; /* ECKD */
+ dedata->attributes.mode = 0x3; /* ECKD */
if ((basepriv->rdc_data.cu_type == 0x2105 ||
basepriv->rdc_data.cu_type == 0x2107 ||
basepriv->rdc_data.cu_type == 0x1750)
&& !(basepriv->uses_cdl && trk < 2))
- data->ga_extended |= 0x40; /* Regular Data Format Mode */
+ dedata->ga_extended |= 0x40; /* Regular Data Format Mode */
heads = basepriv->rdc_data.trk_per_cyl;
begcyl = trk / heads;
@@ -388,8 +526,8 @@
endhead = totrk % heads;
/* check for sequential prestage - enhance cylinder range */
- if (data->attributes.operation == DASD_SEQ_PRESTAGE ||
- data->attributes.operation == DASD_SEQ_ACCESS) {
+ if (dedata->attributes.operation == DASD_SEQ_PRESTAGE ||
+ dedata->attributes.operation == DASD_SEQ_ACCESS) {
if (endcyl + basepriv->attrib.nr_cyl < basepriv->real_cyl)
endcyl += basepriv->attrib.nr_cyl;
@@ -397,11 +535,25 @@
endcyl = (basepriv->real_cyl - 1);
}
- set_ch_t(&data->beg_ext, begcyl, beghead);
- set_ch_t(&data->end_ext, endcyl, endhead);
+ set_ch_t(&dedata->beg_ext, begcyl, beghead);
+ set_ch_t(&dedata->end_ext, endcyl, endhead);
+
+ if (format == 1) {
+ fill_LRE_data(lredata, trk, rec_on_trk, count, cmd,
+ basedev, blksize, tlf);
+ }
+
return rc;
}
+static int prefix(struct ccw1 *ccw, struct PFX_eckd_data *pfxdata,
+ unsigned int trk, unsigned int totrk, int cmd,
+ struct dasd_device *basedev, struct dasd_device *startdev)
+{
+ return prefix_LRE(ccw, pfxdata, trk, totrk, cmd, basedev, startdev,
+ 0, 0, 0, 0, 0);
+}
+
static void
locate_record(struct ccw1 *ccw, struct LO_eckd_data *data, unsigned int trk,
unsigned int rec_on_trk, int no_rec, int cmd,
@@ -845,7 +997,8 @@
/*
* Build CP for Perform Subsystem Function - SSC.
*/
-static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device)
+static struct dasd_ccw_req *dasd_eckd_build_psf_ssc(struct dasd_device *device,
+ int enable_pav)
{
struct dasd_ccw_req *cqr;
struct dasd_psf_ssc_data *psf_ssc_data;
@@ -862,9 +1015,11 @@
}
psf_ssc_data = (struct dasd_psf_ssc_data *)cqr->data;
psf_ssc_data->order = PSF_ORDER_SSC;
- psf_ssc_data->suborder = 0x88;
- psf_ssc_data->reserved[0] = 0x88;
-
+ psf_ssc_data->suborder = 0x40;
+ if (enable_pav) {
+ psf_ssc_data->suborder |= 0x88;
+ psf_ssc_data->reserved[0] = 0x88;
+ }
ccw = cqr->cpaddr;
ccw->cmd_code = DASD_ECKD_CCW_PSF;
ccw->cda = (__u32)(addr_t)psf_ssc_data;
@@ -885,12 +1040,12 @@
* call might change behaviour of DASD devices.
*/
static int
-dasd_eckd_psf_ssc(struct dasd_device *device)
+dasd_eckd_psf_ssc(struct dasd_device *device, int enable_pav)
{
struct dasd_ccw_req *cqr;
int rc;
- cqr = dasd_eckd_build_psf_ssc(device);
+ cqr = dasd_eckd_build_psf_ssc(device, enable_pav);
if (IS_ERR(cqr))
return PTR_ERR(cqr);
@@ -909,12 +1064,13 @@
{
int rc;
struct dasd_eckd_private *private;
+ int enable_pav;
- /* 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);
+ enable_pav = 0;
+ else
+ enable_pav = 1;
+ rc = dasd_eckd_psf_ssc(device, enable_pav);
/* may be requested feature is not available on server,
* therefore just report error and go ahead */
private = (struct dasd_eckd_private *) device->private;
@@ -1504,40 +1660,41 @@
struct irb *irb)
{
char mask;
+ char *sense = NULL;
/* 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) {
+ if ((scsw_dstat(&irb->scsw) & mask) == mask) {
dasd_generic_handle_state_change(device);
return;
}
/* summary unit check */
- if ((irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) &&
+ if ((scsw_dstat(&irb->scsw) & DEV_STAT_UNIT_CHECK) &&
(irb->ecw[7] == 0x0D)) {
dasd_alias_handle_summary_unit_check(device, irb);
return;
}
-
+ sense = dasd_get_sense(irb);
/* service information message SIM */
- if (irb->esw.esw0.erw.cons && !(irb->ecw[27] & DASD_SENSE_BIT_0) &&
- ((irb->ecw[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE)) {
- dasd_3990_erp_handle_sim(device, irb->ecw);
+ if (sense && !(sense[27] & DASD_SENSE_BIT_0) &&
+ ((sense[6] & DASD_SIM_SENSE) == DASD_SIM_SENSE)) {
+ dasd_3990_erp_handle_sim(device, sense);
dasd_schedule_device_bh(device);
return;
}
- if ((irb->scsw.cmd.cc == 1) &&
- (irb->scsw.cmd.fctl & SCSW_FCTL_START_FUNC) &&
- (irb->scsw.cmd.actl & SCSW_ACTL_START_PEND) &&
- (irb->scsw.cmd.stctl & SCSW_STCTL_STATUS_PEND)) {
+ if ((scsw_cc(&irb->scsw) == 1) &&
+ (scsw_fctl(&irb->scsw) & SCSW_FCTL_START_FUNC) &&
+ (scsw_actl(&irb->scsw) & SCSW_ACTL_START_PEND) &&
+ (scsw_stctl(&irb->scsw) & SCSW_STCTL_STATUS_PEND)) {
/* fake irb do nothing, they are handled elsewhere */
dasd_schedule_device_bh(device);
return;
}
- if (!(irb->esw.esw0.erw.cons)) {
+ if (!sense) {
/* just report other unsolicited interrupts */
DEV_MESSAGE(KERN_ERR, device, "%s",
"unsolicited interrupt received");
@@ -1552,9 +1709,19 @@
return;
};
-static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
+
+static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_single(
+ struct dasd_device *startdev,
struct dasd_block *block,
- struct request *req)
+ struct request *req,
+ sector_t first_rec,
+ sector_t last_rec,
+ sector_t first_trk,
+ sector_t last_trk,
+ unsigned int first_offs,
+ unsigned int last_offs,
+ unsigned int blk_per_trk,
+ unsigned int blksize)
{
struct dasd_eckd_private *private;
unsigned long *idaws;
@@ -1564,11 +1731,9 @@
struct req_iterator iter;
struct bio_vec *bv;
char *dst;
- unsigned int blksize, blk_per_trk, off;
+ unsigned int off;
int count, cidaw, cplength, datasize;
- sector_t recid, first_rec, last_rec;
- sector_t first_trk, last_trk;
- unsigned int first_offs, last_offs;
+ sector_t recid;
unsigned char cmd, rcmd;
int use_prefix;
struct dasd_device *basedev;
@@ -1581,15 +1746,7 @@
cmd = DASD_ECKD_CCW_WRITE_MT;
else
return ERR_PTR(-EINVAL);
- /* Calculate number of blocks/records per track. */
- blksize = block->bp_block;
- blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize);
- /* Calculate record id of first and last block. */
- first_rec = first_trk = req->sector >> block->s2b_shift;
- first_offs = sector_div(first_trk, blk_per_trk);
- last_rec = last_trk =
- (req->sector + req->nr_sectors - 1) >> block->s2b_shift;
- last_offs = sector_div(last_trk, blk_per_trk);
+
/* Check struct bio and count the number of blocks for the request. */
count = 0;
cidaw = 0;
@@ -1739,6 +1896,497 @@
return cqr;
}
+static struct dasd_ccw_req *dasd_eckd_build_cp_cmd_track(
+ struct dasd_device *startdev,
+ struct dasd_block *block,
+ struct request *req,
+ sector_t first_rec,
+ sector_t last_rec,
+ sector_t first_trk,
+ sector_t last_trk,
+ unsigned int first_offs,
+ unsigned int last_offs,
+ unsigned int blk_per_trk,
+ unsigned int blksize)
+{
+ struct dasd_eckd_private *private;
+ unsigned long *idaws;
+ struct dasd_ccw_req *cqr;
+ struct ccw1 *ccw;
+ struct req_iterator iter;
+ struct bio_vec *bv;
+ char *dst, *idaw_dst;
+ unsigned int cidaw, cplength, datasize;
+ unsigned int tlf;
+ sector_t recid;
+ unsigned char cmd;
+ struct dasd_device *basedev;
+ unsigned int trkcount, count, count_to_trk_end;
+ unsigned int idaw_len, seg_len, part_len, len_to_track_end;
+ unsigned char new_track, end_idaw;
+ sector_t trkid;
+ unsigned int recoffs;
+
+ basedev = block->base;
+ private = (struct dasd_eckd_private *) basedev->private;
+ if (rq_data_dir(req) == READ)
+ cmd = DASD_ECKD_CCW_READ_TRACK_DATA;
+ else if (rq_data_dir(req) == WRITE)
+ cmd = DASD_ECKD_CCW_WRITE_TRACK_DATA;
+ else
+ return ERR_PTR(-EINVAL);
+
+ /* Track based I/O needs IDAWs for each page, and not just for
+ * 64 bit addresses. We need additional idals for pages
+ * that get filled from two tracks, so we use the number
+ * of records as upper limit.
+ */
+ cidaw = last_rec - first_rec + 1;
+ trkcount = last_trk - first_trk + 1;
+
+ /* 1x prefix + one read/write ccw per track */
+ cplength = 1 + trkcount;
+
+ /* on 31-bit we need space for two 32 bit addresses per page
+ * on 64-bit one 64 bit address
+ */
+ datasize = sizeof(struct PFX_eckd_data) +
+ cidaw * sizeof(unsigned long long);
+
+ /* Allocate the ccw request. */
+ cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
+ cplength, datasize, startdev);
+ if (IS_ERR(cqr))
+ return cqr;
+ ccw = cqr->cpaddr;
+ /* transfer length factor: how many bytes to read from the last track */
+ if (first_trk == last_trk)
+ tlf = last_offs - first_offs + 1;
+ else
+ tlf = last_offs + 1;
+ tlf *= blksize;
+
+ if (prefix_LRE(ccw++, cqr->data, first_trk,
+ last_trk, cmd, basedev, startdev,
+ 1 /* format */, first_offs + 1,
+ trkcount, blksize,
+ tlf) == -EAGAIN) {
+ /* Clock not in sync and XRC is enabled.
+ * Try again later.
+ */
+ dasd_sfree_request(cqr, startdev);
+ return ERR_PTR(-EAGAIN);
+ }
+
+ /*
+ * The translation of request into ccw programs must meet the
+ * following conditions:
+ * - all idaws but the first and the last must address full pages
+ * (or 2K blocks on 31-bit)
+ * - the scope of a ccw and it's idal ends with the track boundaries
+ */
+ idaws = (unsigned long *) (cqr->data + sizeof(struct PFX_eckd_data));
+ recid = first_rec;
+ new_track = 1;
+ end_idaw = 0;
+ len_to_track_end = 0;
+ idaw_dst = 0;
+ idaw_len = 0;
+ rq_for_each_segment(bv, req, iter) {
+ dst = page_address(bv->bv_page) + bv->bv_offset;
+ seg_len = bv->bv_len;
+ while (seg_len) {
+ if (new_track) {
+ trkid = recid;
+ recoffs = sector_div(trkid, blk_per_trk);
+ count_to_trk_end = blk_per_trk - recoffs;
+ count = min((last_rec - recid + 1),
+ (sector_t)count_to_trk_end);
+ len_to_track_end = count * blksize;
+ ccw[-1].flags |= CCW_FLAG_CC;
+ ccw->cmd_code = cmd;
+ ccw->count = len_to_track_end;
+ ccw->cda = (__u32)(addr_t)idaws;
+ ccw->flags = CCW_FLAG_IDA;
+ ccw++;
+ recid += count;
+ new_track = 0;
+ }
+ /* If we start a new idaw, everything is fine and the
+ * start of the new idaw is the start of this segment.
+ * If we continue an idaw, we must make sure that the
+ * current segment begins where the so far accumulated
+ * idaw ends
+ */
+ if (!idaw_dst)
+ idaw_dst = dst;
+ if ((idaw_dst + idaw_len) != dst) {
+ dasd_sfree_request(cqr, startdev);
+ return ERR_PTR(-ERANGE);
+ }
+ part_len = min(seg_len, len_to_track_end);
+ seg_len -= part_len;
+ dst += part_len;
+ idaw_len += part_len;
+ len_to_track_end -= part_len;
+ /* collected memory area ends on an IDA_BLOCK border,
+ * -> create an idaw
+ * idal_create_words will handle cases where idaw_len
+ * is larger then IDA_BLOCK_SIZE
+ */
+ if (!(__pa(idaw_dst + idaw_len) & (IDA_BLOCK_SIZE-1)))
+ end_idaw = 1;
+ /* We also need to end the idaw at track end */
+ if (!len_to_track_end) {
+ new_track = 1;
+ end_idaw = 1;
+ }
+ if (end_idaw) {
+ idaws = idal_create_words(idaws, idaw_dst,
+ idaw_len);
+ idaw_dst = 0;
+ idaw_len = 0;
+ end_idaw = 0;
+ }
+ }
+ }
+
+ if (blk_noretry_request(req) ||
+ block->base->features & DASD_FEATURE_FAILFAST)
+ set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
+ cqr->startdev = startdev;
+ cqr->memdev = startdev;
+ cqr->block = block;
+ cqr->expires = 5 * 60 * HZ; /* 5 minutes */
+ cqr->lpm = private->path_data.ppm;
+ cqr->retries = 256;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ return cqr;
+}
+
+static int prepare_itcw(struct itcw *itcw,
+ unsigned int trk, unsigned int totrk, int cmd,
+ struct dasd_device *basedev,
+ struct dasd_device *startdev,
+ unsigned int rec_on_trk, int count,
+ unsigned int blksize,
+ unsigned int total_data_size,
+ unsigned int tlf,
+ unsigned int blk_per_trk)
+{
+ struct PFX_eckd_data pfxdata;
+ struct dasd_eckd_private *basepriv, *startpriv;
+ struct DE_eckd_data *dedata;
+ struct LRE_eckd_data *lredata;
+ struct dcw *dcw;
+
+ u32 begcyl, endcyl;
+ u16 heads, beghead, endhead;
+ u8 pfx_cmd;
+
+ int rc = 0;
+ int sector = 0;
+ int dn, d;
+
+
+ /* setup prefix data */
+ basepriv = (struct dasd_eckd_private *) basedev->private;
+ startpriv = (struct dasd_eckd_private *) startdev->private;
+ dedata = &pfxdata.define_extent;
+ lredata = &pfxdata.locate_record;
+
+ memset(&pfxdata, 0, sizeof(pfxdata));
+ pfxdata.format = 1; /* PFX with LRE */
+ pfxdata.base_address = basepriv->ned->unit_addr;
+ pfxdata.base_lss = basepriv->ned->ID;
+ pfxdata.validity.define_extent = 1;
+
+ /* private uid is kept up to date, conf_data may be outdated */
+ if (startpriv->uid.type != UA_BASE_DEVICE) {
+ pfxdata.validity.verify_base = 1;
+ if (startpriv->uid.type == UA_HYPER_PAV_ALIAS)
+ pfxdata.validity.hyper_pav = 1;
+ }
+
+ switch (cmd) {
+ case DASD_ECKD_CCW_READ_TRACK_DATA:
+ dedata->mask.perm = 0x1;
+ dedata->attributes.operation = basepriv->attrib.operation;
+ dedata->blk_size = blksize;
+ dedata->ga_extended |= 0x42;
+ lredata->operation.orientation = 0x0;
+ lredata->operation.operation = 0x0C;
+ lredata->auxiliary.check_bytes = 0x01;
+ pfx_cmd = DASD_ECKD_CCW_PFX_READ;
+ break;
+ case DASD_ECKD_CCW_WRITE_TRACK_DATA:
+ dedata->mask.perm = 0x02;
+ dedata->attributes.operation = basepriv->attrib.operation;
+ dedata->blk_size = blksize;
+ rc = check_XRC_on_prefix(&pfxdata, basedev);
+ dedata->ga_extended |= 0x42;
+ lredata->operation.orientation = 0x0;
+ lredata->operation.operation = 0x3F;
+ lredata->extended_operation = 0x23;
+ lredata->auxiliary.check_bytes = 0x2;
+ pfx_cmd = DASD_ECKD_CCW_PFX;
+ break;
+ default:
+ DBF_DEV_EVENT(DBF_ERR, basedev,
+ "prepare itcw, unknown opcode 0x%x", cmd);
+ BUG();
+ break;
+ }
+ if (rc)
+ return rc;
+
+ dedata->attributes.mode = 0x3; /* ECKD */
+
+ heads = basepriv->rdc_data.trk_per_cyl;
+ begcyl = trk / heads;
+ beghead = trk % heads;
+ endcyl = totrk / heads;
+ endhead = totrk % heads;
+
+ /* check for sequential prestage - enhance cylinder range */
+ if (dedata->attributes.operation == DASD_SEQ_PRESTAGE ||
+ dedata->attributes.operation == DASD_SEQ_ACCESS) {
+
+ if (endcyl + basepriv->attrib.nr_cyl < basepriv->real_cyl)
+ endcyl += basepriv->attrib.nr_cyl;
+ else
+ endcyl = (basepriv->real_cyl - 1);
+ }
+
+ set_ch_t(&dedata->beg_ext, begcyl, beghead);
+ set_ch_t(&dedata->end_ext, endcyl, endhead);
+
+ dedata->ep_format = 0x20; /* records per track is valid */
+ dedata->ep_rec_per_track = blk_per_trk;
+
+ if (rec_on_trk) {
+ switch (basepriv->rdc_data.dev_type) {
+ case 0x3390:
+ dn = ceil_quot(blksize + 6, 232);
+ d = 9 + ceil_quot(blksize + 6 * (dn + 1), 34);
+ sector = (49 + (rec_on_trk - 1) * (10 + d)) / 8;
+ break;
+ case 0x3380:
+ d = 7 + ceil_quot(blksize + 12, 32);
+ sector = (39 + (rec_on_trk - 1) * (8 + d)) / 7;
+ break;
+ }
+ }
+
+ lredata->auxiliary.length_valid = 1;
+ lredata->auxiliary.length_scope = 1;
+ lredata->auxiliary.imbedded_ccw_valid = 1;
+ lredata->length = tlf;
+ lredata->imbedded_ccw = cmd;
+ lredata->count = count;
+ lredata->sector = sector;
+ set_ch_t(&lredata->seek_addr, begcyl, beghead);
+ lredata->search_arg.cyl = lredata->seek_addr.cyl;
+ lredata->search_arg.head = lredata->seek_addr.head;
+ lredata->search_arg.record = rec_on_trk;
+
+ dcw = itcw_add_dcw(itcw, pfx_cmd, 0,
+ &pfxdata, sizeof(pfxdata), total_data_size);
+
+ return rc;
+}
+
+static struct dasd_ccw_req *dasd_eckd_build_cp_tpm_track(
+ struct dasd_device *startdev,
+ struct dasd_block *block,
+ struct request *req,
+ sector_t first_rec,
+ sector_t last_rec,
+ sector_t first_trk,
+ sector_t last_trk,
+ unsigned int first_offs,
+ unsigned int last_offs,
+ unsigned int blk_per_trk,
+ unsigned int blksize)
+{
+ struct dasd_eckd_private *private;
+ struct dasd_ccw_req *cqr;
+ struct req_iterator iter;
+ struct bio_vec *bv;
+ char *dst;
+ unsigned int trkcount, ctidaw;
+ unsigned char cmd;
+ struct dasd_device *basedev;
+ unsigned int tlf;
+ struct itcw *itcw;
+ struct tidaw *last_tidaw = NULL;
+ int itcw_op;
+ size_t itcw_size;
+
+ basedev = block->base;
+ private = (struct dasd_eckd_private *) basedev->private;
+ if (rq_data_dir(req) == READ) {
+ cmd = DASD_ECKD_CCW_READ_TRACK_DATA;
+ itcw_op = ITCW_OP_READ;
+ } else if (rq_data_dir(req) == WRITE) {
+ cmd = DASD_ECKD_CCW_WRITE_TRACK_DATA;
+ itcw_op = ITCW_OP_WRITE;
+ } else
+ return ERR_PTR(-EINVAL);
+
+ /* trackbased I/O needs address all memory via TIDAWs,
+ * not just for 64 bit addresses. This allows us to map
+ * each segment directly to one tidaw.
+ */
+ trkcount = last_trk - first_trk + 1;
+ ctidaw = 0;
+ rq_for_each_segment(bv, req, iter) {
+ ++ctidaw;
+ }
+
+ /* Allocate the ccw request. */
+ itcw_size = itcw_calc_size(0, ctidaw, 0);
+ cqr = dasd_smalloc_request(dasd_eckd_discipline.name,
+ 0, itcw_size, startdev);
+ if (IS_ERR(cqr))
+ return cqr;
+
+ cqr->cpmode = 1;
+ cqr->startdev = startdev;
+ cqr->memdev = startdev;
+ cqr->block = block;
+ cqr->expires = 100*HZ;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ cqr->retries = 10;
+
+ /* transfer length factor: how many bytes to read from the last track */
+ if (first_trk == last_trk)
+ tlf = last_offs - first_offs + 1;
+ else
+ tlf = last_offs + 1;
+ tlf *= blksize;
+
+ itcw = itcw_init(cqr->data, itcw_size, itcw_op, 0, ctidaw, 0);
+ cqr->cpaddr = itcw_get_tcw(itcw);
+
+ if (prepare_itcw(itcw, first_trk, last_trk,
+ cmd, basedev, startdev,
+ first_offs + 1,
+ trkcount, blksize,
+ (last_rec - first_rec + 1) * blksize,
+ tlf, blk_per_trk) == -EAGAIN) {
+ /* Clock not in sync and XRC is enabled.
+ * Try again later.
+ */
+ dasd_sfree_request(cqr, startdev);
+ return ERR_PTR(-EAGAIN);
+ }
+
+ /*
+ * A tidaw can address 4k of memory, but must not cross page boundaries
+ * We can let the block layer handle this by setting
+ * blk_queue_segment_boundary to page boundaries and
+ * blk_max_segment_size to page size when setting up the request queue.
+ */
+ rq_for_each_segment(bv, req, iter) {
+ dst = page_address(bv->bv_page) + bv->bv_offset;
+ last_tidaw = itcw_add_tidaw(itcw, 0x00, dst, bv->bv_len);
+ if (IS_ERR(last_tidaw))
+ return (struct dasd_ccw_req *)last_tidaw;
+ }
+
+ last_tidaw->flags |= 0x80;
+ itcw_finalize(itcw);
+
+ if (blk_noretry_request(req) ||
+ block->base->features & DASD_FEATURE_FAILFAST)
+ set_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags);
+ cqr->startdev = startdev;
+ cqr->memdev = startdev;
+ cqr->block = block;
+ cqr->expires = 5 * 60 * HZ; /* 5 minutes */
+ cqr->lpm = private->path_data.ppm;
+ cqr->retries = 256;
+ cqr->buildclk = get_clock();
+ cqr->status = DASD_CQR_FILLED;
+ return cqr;
+}
+
+static struct dasd_ccw_req *dasd_eckd_build_cp(struct dasd_device *startdev,
+ struct dasd_block *block,
+ struct request *req)
+{
+ int tpm, cmdrtd, cmdwtd;
+ int use_prefix;
+
+ struct dasd_eckd_private *private;
+ int fcx_in_css, fcx_in_gneq, fcx_in_features;
+ struct dasd_device *basedev;
+ sector_t first_rec, last_rec;
+ sector_t first_trk, last_trk;
+ unsigned int first_offs, last_offs;
+ unsigned int blk_per_trk, blksize;
+ int cdlspecial;
+ struct dasd_ccw_req *cqr;
+
+ basedev = block->base;
+ private = (struct dasd_eckd_private *) basedev->private;
+
+ /* Calculate number of blocks/records per track. */
+ blksize = block->bp_block;
+ blk_per_trk = recs_per_track(&private->rdc_data, 0, blksize);
+ /* Calculate record id of first and last block. */
+ first_rec = first_trk = req->sector >> block->s2b_shift;
+ first_offs = sector_div(first_trk, blk_per_trk);
+ last_rec = last_trk =
+ (req->sector + req->nr_sectors - 1) >> block->s2b_shift;
+ last_offs = sector_div(last_trk, blk_per_trk);
+ cdlspecial = (private->uses_cdl && first_rec < 2*blk_per_trk);
+
+ /* is transport mode supported ? */
+ fcx_in_css = css_general_characteristics.fcx;
+ fcx_in_gneq = private->gneq->reserved2[7] & 0x04;
+ fcx_in_features = private->features.feature[40] & 0x80;
+ tpm = fcx_in_css && fcx_in_gneq && fcx_in_features;
+
+ /* is read track data and write track data in command mode supported? */
+ cmdrtd = private->features.feature[9] & 0x20;
+ cmdwtd = private->features.feature[12] & 0x40;
+ use_prefix = private->features.feature[8] & 0x01;
+
+ cqr = NULL;
+ if (cdlspecial || dasd_page_cache) {
+ /* do nothing, just fall through to the cmd mode single case */
+ } else if (!dasd_nofcx && tpm && (first_trk == last_trk)) {
+ cqr = dasd_eckd_build_cp_tpm_track(startdev, block, req,
+ first_rec, last_rec,
+ first_trk, last_trk,
+ first_offs, last_offs,
+ blk_per_trk, blksize);
+ if (IS_ERR(cqr) && PTR_ERR(cqr) != -EAGAIN)
+ cqr = NULL;
+ } else if (use_prefix &&
+ (((rq_data_dir(req) == READ) && cmdrtd) ||
+ ((rq_data_dir(req) == WRITE) && cmdwtd))) {
+ cqr = dasd_eckd_build_cp_cmd_track(startdev, block, req,
+ first_rec, last_rec,
+ first_trk, last_trk,
+ first_offs, last_offs,
+ blk_per_trk, blksize);
+ if (IS_ERR(cqr) && PTR_ERR(cqr) != -EAGAIN)
+ cqr = NULL;
+ }
+ if (!cqr)
+ cqr = dasd_eckd_build_cp_cmd_single(startdev, block, req,
+ first_rec, last_rec,
+ first_trk, last_trk,
+ first_offs, last_offs,
+ blk_per_trk, blksize);
+ return cqr;
+}
+
static int
dasd_eckd_free_cp(struct dasd_ccw_req *cqr, struct request *req)
{
@@ -1792,7 +2440,7 @@
}
/*
- * Modify ccw chain in cqr so it can be started on a base device.
+ * Modify ccw/tcw in cqr so it can be started on a base device.
*
* Note that this is not enough to restart the cqr!
* Either reset cqr->startdev as well (summary unit check handling)
@@ -1802,13 +2450,24 @@
{
struct ccw1 *ccw;
struct PFX_eckd_data *pfxdata;
+ struct tcw *tcw;
+ struct tccb *tccb;
+ struct dcw *dcw;
- ccw = cqr->cpaddr;
- pfxdata = cqr->data;
-
- if (ccw->cmd_code == DASD_ECKD_CCW_PFX) {
+ if (cqr->cpmode == 1) {
+ tcw = cqr->cpaddr;
+ tccb = tcw_get_tccb(tcw);
+ dcw = (struct dcw *)&tccb->tca[0];
+ pfxdata = (struct PFX_eckd_data *)&dcw->cd[0];
pfxdata->validity.verify_base = 0;
pfxdata->validity.hyper_pav = 0;
+ } else {
+ ccw = cqr->cpaddr;
+ pfxdata = cqr->data;
+ if (ccw->cmd_code == DASD_ECKD_CCW_PFX) {
+ pfxdata->validity.verify_base = 0;
+ pfxdata->validity.hyper_pav = 0;
+ }
}
}
@@ -1886,6 +2545,7 @@
{
struct dasd_ccw_req *cqr;
int rc;
+ struct ccw1 *ccw;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@@ -1897,10 +2557,11 @@
"Could not allocate initialization request");
return PTR_ERR(cqr);
}
- cqr->cpaddr->cmd_code = DASD_ECKD_CCW_RELEASE;
- cqr->cpaddr->flags |= CCW_FLAG_SLI;
- cqr->cpaddr->count = 32;
- cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_RELEASE;
+ ccw->flags |= CCW_FLAG_SLI;
+ ccw->count = 32;
+ ccw->cda = (__u32)(addr_t) cqr->data;
cqr->startdev = device;
cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
@@ -1927,6 +2588,7 @@
{
struct dasd_ccw_req *cqr;
int rc;
+ struct ccw1 *ccw;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@@ -1938,10 +2600,11 @@
"Could not allocate initialization request");
return PTR_ERR(cqr);
}
- cqr->cpaddr->cmd_code = DASD_ECKD_CCW_RESERVE;
- cqr->cpaddr->flags |= CCW_FLAG_SLI;
- cqr->cpaddr->count = 32;
- cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_RESERVE;
+ ccw->flags |= CCW_FLAG_SLI;
+ ccw->count = 32;
+ ccw->cda = (__u32)(addr_t) cqr->data;
cqr->startdev = device;
cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
@@ -1967,6 +2630,7 @@
{
struct dasd_ccw_req *cqr;
int rc;
+ struct ccw1 *ccw;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
@@ -1978,10 +2642,11 @@
"Could not allocate initialization request");
return PTR_ERR(cqr);
}
- cqr->cpaddr->cmd_code = DASD_ECKD_CCW_SLCK;
- cqr->cpaddr->flags |= CCW_FLAG_SLI;
- cqr->cpaddr->count = 32;
- cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
+ ccw = cqr->cpaddr;
+ ccw->cmd_code = DASD_ECKD_CCW_SLCK;
+ ccw->flags |= CCW_FLAG_SLI;
+ ccw->count = 32;
+ ccw->cda = (__u32)(addr_t) cqr->data;
cqr->startdev = device;
cqr->memdev = device;
clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
@@ -2271,7 +2936,7 @@
* Print sense data and related channel program.
* Parts are printed because printk buffer is only 1024 bytes.
*/
-static void dasd_eckd_dump_sense(struct dasd_device *device,
+static void dasd_eckd_dump_sense_ccw(struct dasd_device *device,
struct dasd_ccw_req *req, struct irb *irb)
{
char *page;
@@ -2290,7 +2955,7 @@
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);
+ scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw));
len += sprintf(page + len, KERN_ERR PRINTK_HEADER
" device %s: Failing CCW: %p\n",
dev_name(&device->cdev->dev),
@@ -2366,6 +3031,147 @@
free_page((unsigned long) page);
}
+
+/*
+ * Print sense data from a tcw.
+ */
+static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
+ struct dasd_ccw_req *req, struct irb *irb)
+{
+ char *page;
+ int len, sl, sct, residual;
+
+ struct tsb *tsb;
+ u8 *sense;
+
+
+ page = (char *) get_zeroed_page(GFP_ATOMIC);
+ if (page == NULL) {
+ DEV_MESSAGE(KERN_ERR, device, " %s",
+ "No memory to dump sense data");
+ return;
+ }
+ /* dump the sense data */
+ 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 "
+ "fcxs: 0x%02X schxs: 0x%02X\n", req,
+ scsw_cstat(&irb->scsw), scsw_dstat(&irb->scsw),
+ irb->scsw.tm.fcxs, irb->scsw.tm.schxs);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " device %s: Failing TCW: %p\n",
+ dev_name(&device->cdev->dev),
+ (void *) (addr_t) irb->scsw.tm.tcw);
+
+ tsb = NULL;
+ sense = NULL;
+ if (irb->scsw.tm.tcw)
+ tsb = tcw_get_tsb(
+ (struct tcw *)(unsigned long)irb->scsw.tm.tcw);
+
+ if (tsb && (irb->scsw.tm.fcxs == 0x01)) {
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->length %d\n", tsb->length);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->flags %x\n", tsb->flags);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->dcw_offset %d\n", tsb->dcw_offset);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->count %d\n", tsb->count);
+ residual = tsb->count - 28;
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " residual %d\n", residual);
+
+ switch (tsb->flags & 0x07) {
+ case 1: /* tsa_iostat */
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.iostat.dev_time %d\n",
+ tsb->tsa.iostat.dev_time);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.iostat.def_time %d\n",
+ tsb->tsa.iostat.def_time);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.iostat.queue_time %d\n",
+ tsb->tsa.iostat.queue_time);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.iostat.dev_busy_time %d\n",
+ tsb->tsa.iostat.dev_busy_time);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.iostat.dev_act_time %d\n",
+ tsb->tsa.iostat.dev_act_time);
+ sense = tsb->tsa.iostat.sense;
+ break;
+ case 2: /* ts_ddpc */
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.ddpc.rc %d\n", tsb->tsa.ddpc.rc);
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.ddpc.rcq: ");
+ for (sl = 0; sl < 16; sl++) {
+ for (sct = 0; sct < 8; sct++) {
+ len += sprintf(page + len, " %02x",
+ tsb->tsa.ddpc.rcq[sl]);
+ }
+ len += sprintf(page + len, "\n");
+ }
+ sense = tsb->tsa.ddpc.sense;
+ break;
+ case 3: /* tsa_intrg */
+ len += sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " tsb->tsa.intrg.: not supportet yet \n");
+ break;
+ }
+
+ if (sense) {
+ 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",
+ sense[8 * sl + sct]);
+ }
+ len += sprintf(page + len, "\n");
+ }
+
+ if (sense[27] & DASD_SENSE_BIT_0) {
+ /* 24 Byte Sense Data */
+ sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " 24 Byte: %x MSG %x, "
+ "%s MSGb to SYSOP\n",
+ sense[7] >> 4, sense[7] & 0x0f,
+ sense[1] & 0x10 ? "" : "no");
+ } else {
+ /* 32 Byte Sense Data */
+ sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " 32 Byte: Format: %x "
+ "Exception class %x\n",
+ sense[6] & 0x0f, sense[22] >> 4);
+ }
+ } else {
+ sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " SORRY - NO VALID SENSE AVAILABLE\n");
+ }
+ } else {
+ sprintf(page + len, KERN_ERR PRINTK_HEADER
+ " SORRY - NO TSB DATA AVAILABLE\n");
+ }
+ printk("%s", page);
+ free_page((unsigned long) page);
+}
+
+static void dasd_eckd_dump_sense(struct dasd_device *device,
+ struct dasd_ccw_req *req, struct irb *irb)
+{
+ if (req && scsw_is_tm(&req->irb.scsw))
+ dasd_eckd_dump_sense_tcw(device, req, irb);
+ else
+ dasd_eckd_dump_sense_ccw(device, req, irb);
+}
+
+
/*
* max_blocks is dependent on the amount of storage that is available
* in the static io buffer for each device. Currently each device has