[PATCH 2/3] qdio: base support for hardware data router with zfcp

Steffen Maier
2011-08-15T12:40:31Z

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[-- Type: text/plain, Size: 3050 bytes --]

From: Swen Schillig <swen@vnet.ibm.com>

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>
---

arch/s390/include/asm/qdio.h | 5 +++++
drivers/s390/cio/qdio_main.c | 11 ++++++++---
drivers/s390/cio/qdio_setup.c | 1 +
3 files changed, 14 insertions(+), 3 deletions(-)

--- 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_d
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;
--- 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);
@@ -927,6 +929,7 @@ static void qdio_handle_activate_check(s
{
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);
@@ -940,8 +943,10 @@ static void qdio_handle_activate_check(s
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);
}
--- 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 *i
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 */