[SCSI] qdio: base support for hardware data router with zfcp

FICON Express8S supports hardware data router, which requires an
adapted qdio request format.
This part 1/2 provides the qdio base required for exploitation in
zfcp.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index 15c9762..cbbf7d8 100644 (file)
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -46,6 +46,8 @@ struct qdesfmt0 {
        u32      : 16;
 } __attribute__ ((packed));
 
+#define QDR_AC_MULTI_BUFFER_ENABLE 0x01
+
 /**
  * struct qdr - queue description record (QDR)
  * @qfmt: queue format
@@ -222,6 +224,8 @@ struct slsb {
        u8 val[QDIO_MAX_BUFFERS_PER_Q];
 } __attribute__ ((packed, aligned(256)));
 
+#define CHSC_AC2_MULTI_BUFFER_AVAILABLE        0x0080
+#define CHSC_AC2_MULTI_BUFFER_ENABLED  0x0040
 #define CHSC_AC2_DATA_DIV_AVAILABLE    0x0010
 #define CHSC_AC2_DATA_DIV_ENABLED      0x0002
 
@@ -287,6 +291,7 @@ typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
 struct qdio_initialize {
        struct ccw_device *cdev;
        unsigned char q_format;
+       unsigned char qdr_ac;
        unsigned char adapter_name[8];
        unsigned int qib_param_field_format;
        unsigned char *qib_param_field;

diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 288c914..d2c1f1b 100644 (file)
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -156,7 +156,8 @@ again:
                DBF_ERROR("%3d%3d%2d", count, tmp_count, nr);
                q->handler(q->irq_ptr->cdev,
                           QDIO_ERROR_ACTIVATE_CHECK_CONDITION,
-                          0, -1, -1, q->irq_ptr->int_parm);
+                          q->nr, q->first_to_kick, count,
+                          q->irq_ptr->int_parm);
                return 0;
        }
        return count - tmp_count;
@@ -202,7 +203,8 @@ again:
                DBF_ERROR("%3d%3d%2d", count, tmp_count, nr);
                q->handler(q->irq_ptr->cdev,
                           QDIO_ERROR_ACTIVATE_CHECK_CONDITION,
-                          0, -1, -1, q->irq_ptr->int_parm);
+                          q->nr, q->first_to_kick, count,
+                          q->irq_ptr->int_parm);
                return 0;
        }
        WARN_ON(tmp_count);
@@ -942,6 +944,7 @@ static void qdio_handle_activate_check(struct ccw_device *cdev,
 {
        struct qdio_irq *irq_ptr = cdev->private->qdio_data;
        struct qdio_q *q;
+       int count;
 
        DBF_ERROR("%4x ACT CHECK", irq_ptr->schid.sch_no);
        DBF_ERROR("intp :%lx", intparm);
@@ -955,8 +958,10 @@ static void qdio_handle_activate_check(struct ccw_device *cdev,
                dump_stack();
                goto no_handler;
        }
+
+       count = sub_buf(q->first_to_check, q->first_to_kick);
        q->handler(q->irq_ptr->cdev, QDIO_ERROR_ACTIVATE_CHECK_CONDITION,
-                  0, -1, -1, irq_ptr->int_parm);
+                  q->nr, q->first_to_kick, count, irq_ptr->int_parm);
 no_handler:
        qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
 }

diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c
index 89107d0..a82b2d3 100644 (file)
--- a/drivers/s390/cio/qdio_setup.c
+++ b/drivers/s390/cio/qdio_setup.c
@@ -345,6 +345,7 @@ static void setup_qdr(struct qdio_irq *irq_ptr,
        int i;
 
        irq_ptr->qdr->qfmt = qdio_init->q_format;
+       irq_ptr->qdr->ac = qdio_init->qdr_ac;
        irq_ptr->qdr->iqdcnt = qdio_init->no_input_qs;
        irq_ptr->qdr->oqdcnt = qdio_init->no_output_qs;
        irq_ptr->qdr->iqdsz = sizeof(struct qdesfmt0) / 4; /* size in words */