[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>

1 files changed, 13 insertions, 8 deletions

diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index f8e05ce98621..9ce4209552ae 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -297,11 +297,12 @@ static void dasd_eer_write_standard_trigger(struct dasd_device *device,
         struct dasd_eer_header header;
         unsigned long flags;
         struct eerbuffer *eerb;
+        char *sense;
 
         /* go through cqr chain and count the valid sense data sets */
         data_size = 0;
         for (temp_cqr = cqr; temp_cqr; temp_cqr = temp_cqr->refers)
-                if (temp_cqr->irb.esw.esw0.erw.cons)
+                if (dasd_get_sense(&temp_cqr->irb))
                         data_size += 32;
 
         header.total_size = sizeof(header) + data_size + 4; /* "EOR" */
@@ -316,9 +317,11 @@ static void dasd_eer_write_standard_trigger(struct dasd_device *device,
         list_for_each_entry(eerb, &bufferlist, list) {
                 dasd_eer_start_record(eerb, header.total_size);
                 dasd_eer_write_buffer(eerb, (char *) &header, sizeof(header));
-                for (temp_cqr = cqr; temp_cqr; temp_cqr = temp_cqr->refers)
-                        if (temp_cqr->irb.esw.esw0.erw.cons)
-                                dasd_eer_write_buffer(eerb, cqr->irb.ecw, 32);
+                for (temp_cqr = cqr; temp_cqr; temp_cqr = temp_cqr->refers) {
+                        sense = dasd_get_sense(&temp_cqr->irb);
+                        if (sense)
+                                dasd_eer_write_buffer(eerb, sense, 32);
+                }
                 dasd_eer_write_buffer(eerb, "EOR", 4);
         }
         spin_unlock_irqrestore(&bufferlock, flags);
@@ -451,6 +454,7 @@ int dasd_eer_enable(struct dasd_device *device)
 {
         struct dasd_ccw_req *cqr;
         unsigned long flags;
+        struct ccw1 *ccw;
 
         if (device->eer_cqr)
                 return 0;
@@ -468,10 +472,11 @@ int dasd_eer_enable(struct dasd_device *device)
         cqr->expires = 10 * HZ;
         clear_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags);
 
-        cqr->cpaddr->cmd_code = DASD_ECKD_CCW_SNSS;
-        cqr->cpaddr->count = SNSS_DATA_SIZE;
-        cqr->cpaddr->flags = 0;
-        cqr->cpaddr->cda = (__u32)(addr_t) cqr->data;
+        ccw = cqr->cpaddr;
+        ccw->cmd_code = DASD_ECKD_CCW_SNSS;
+        ccw->count = SNSS_DATA_SIZE;
+        ccw->flags = 0;
+        ccw->cda = (__u32)(addr_t) cqr->data;
 
         cqr->buildclk = get_clock();
         cqr->status = DASD_CQR_FILLED;