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authorSebastian Ott <sebott@linux.vnet.ibm.com>2013-06-05 20:59:22 +0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-06-26 23:10:15 +0400
commitca4ba153f985d0c1478ccf05ac95314402bc08a7 (patch)
tree101cdcd952ae59fd42192aad4dd1b9bbfb08238e /drivers/s390
parentda5b6cb162b6bef39d76446a5e015d6a111459b1 (diff)
downloadlinux-ca4ba153f985d0c1478ccf05ac95314402bc08a7.tar.xz
s390/qdio: cleanup chsc SADC usage
Move the code to issue the set adapter device controls command to chsc.c and make it accessible for the qdio code via the wrapper chsc_sadc. Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/chsc.c37
-rw-r--r--drivers/s390/cio/chsc.h22
-rw-r--r--drivers/s390/cio/qdio.h20
-rw-r--r--drivers/s390/cio/qdio_thinint.c48
4 files changed, 73 insertions, 54 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index d119d0d87e9b..13299f902676 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -20,6 +20,7 @@
#include <asm/chpid.h>
#include <asm/chsc.h>
#include <asm/crw.h>
+#include <asm/isc.h>
#include "css.h"
#include "cio.h"
@@ -167,6 +168,42 @@ int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd)
}
EXPORT_SYMBOL_GPL(chsc_ssqd);
+/**
+ * chsc_sadc() - set adapter device controls (SADC)
+ * @schid: id of the subchannel on which SADC is performed
+ * @scssc: request and response block for SADC
+ * @summary_indicator_addr: summary indicator address
+ * @subchannel_indicator_addr: subchannel indicator address
+ *
+ * Returns 0 on success.
+ */
+int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
+ u64 summary_indicator_addr, u64 subchannel_indicator_addr)
+{
+ memset(scssc, 0, sizeof(*scssc));
+ scssc->request.length = 0x0fe0;
+ scssc->request.code = 0x0021;
+ scssc->operation_code = 0;
+
+ scssc->summary_indicator_addr = summary_indicator_addr;
+ scssc->subchannel_indicator_addr = subchannel_indicator_addr;
+
+ scssc->ks = PAGE_DEFAULT_KEY >> 4;
+ scssc->kc = PAGE_DEFAULT_KEY >> 4;
+ scssc->isc = QDIO_AIRQ_ISC;
+ scssc->schid = schid;
+
+ /* enable the time delay disablement facility */
+ if (css_general_characteristics.aif_tdd)
+ scssc->word_with_d_bit = 0x10000000;
+
+ if (chsc(scssc))
+ return -EIO;
+
+ return chsc_error_from_response(scssc->response.code);
+}
+EXPORT_SYMBOL_GPL(chsc_sadc);
+
static int s390_subchannel_remove_chpid(struct subchannel *sch, void *data)
{
spin_lock_irq(sch->lock);
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 2b88e74e6b65..23d072e70eb2 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -87,6 +87,26 @@ struct chsc_ssqd_area {
struct qdio_ssqd_desc qdio_ssqd;
} __packed;
+struct chsc_scssc_area {
+ struct chsc_header request;
+ u16 operation_code;
+ u16:16;
+ u32:32;
+ u32:32;
+ u64 summary_indicator_addr;
+ u64 subchannel_indicator_addr;
+ u32 ks:4;
+ u32 kc:4;
+ u32:21;
+ u32 isc:3;
+ u32 word_with_d_bit;
+ u32:32;
+ struct subchannel_id schid;
+ u32 reserved[1004];
+ struct chsc_header response;
+ u32:32;
+} __packed;
+
struct chsc_scpd {
struct chsc_header request;
u32:2;
@@ -127,6 +147,8 @@ void chsc_chp_online(struct chp_id chpid);
void chsc_chp_offline(struct chp_id chpid);
int chsc_get_channel_measurement_chars(struct channel_path *chp);
int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
+int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
+ u64 summary_indicator_addr, u64 subchannel_indicator_addr);
int chsc_error_from_response(int response);
int chsc_siosl(struct subchannel_id schid);
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index b8bda2175b6c..8acaae18bd11 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -140,26 +140,6 @@ struct siga_flag {
u8:3;
} __attribute__ ((packed));
-struct scssc_area {
- struct chsc_header request;
- u16 operation_code;
- u16:16;
- u32:32;
- u32:32;
- u64 summary_indicator_addr;
- u64 subchannel_indicator_addr;
- u32 ks:4;
- u32 kc:4;
- u32:21;
- u32 isc:3;
- u32 word_with_d_bit;
- u32:32;
- struct subchannel_id schid;
- u32 reserved[1004];
- struct chsc_header response;
- u32:32;
-} __attribute__ ((packed));
-
struct qdio_dev_perf_stat {
unsigned int adapter_int;
unsigned int qdio_int;
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index bde5255200dc..417b2557d83e 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -208,51 +208,31 @@ static void tiqdio_thinint_handler(void *alsi, void *data)
static int set_subchannel_ind(struct qdio_irq *irq_ptr, int reset)
{
- struct scssc_area *scssc_area;
+ struct chsc_scssc_area *scssc = (void *)irq_ptr->chsc_page;
+ u64 summary_indicator_addr, subchannel_indicator_addr;
int rc;
- scssc_area = (struct scssc_area *)irq_ptr->chsc_page;
- memset(scssc_area, 0, PAGE_SIZE);
-
if (reset) {
- scssc_area->summary_indicator_addr = 0;
- scssc_area->subchannel_indicator_addr = 0;
+ summary_indicator_addr = 0;
+ subchannel_indicator_addr = 0;
} else {
- scssc_area->summary_indicator_addr = virt_to_phys(tiqdio_alsi);
- scssc_area->subchannel_indicator_addr =
- virt_to_phys(irq_ptr->dsci);
+ summary_indicator_addr = virt_to_phys(tiqdio_alsi);
+ subchannel_indicator_addr = virt_to_phys(irq_ptr->dsci);
}
- scssc_area->request = (struct chsc_header) {
- .length = 0x0fe0,
- .code = 0x0021,
- };
- scssc_area->operation_code = 0;
- scssc_area->ks = PAGE_DEFAULT_KEY >> 4;
- scssc_area->kc = PAGE_DEFAULT_KEY >> 4;
- scssc_area->isc = QDIO_AIRQ_ISC;
- scssc_area->schid = irq_ptr->schid;
-
- /* enable the time delay disablement facility */
- if (css_general_characteristics.aif_tdd)
- scssc_area->word_with_d_bit = 0x10000000;
-
- rc = chsc(scssc_area);
- if (rc)
- return -EIO;
-
- rc = chsc_error_from_response(scssc_area->response.code);
+ rc = chsc_sadc(irq_ptr->schid, scssc, summary_indicator_addr,
+ subchannel_indicator_addr);
if (rc) {
DBF_ERROR("%4x SSI r:%4x", irq_ptr->schid.sch_no,
- scssc_area->response.code);
- DBF_ERROR_HEX(&scssc_area->response, sizeof(void *));
- return rc;
+ scssc->response.code);
+ goto out;
}
DBF_EVENT("setscind");
- DBF_HEX(&scssc_area->summary_indicator_addr, sizeof(unsigned long));
- DBF_HEX(&scssc_area->subchannel_indicator_addr, sizeof(unsigned long));
- return 0;
+ DBF_HEX(&summary_indicator_addr, sizeof(summary_indicator_addr));
+ DBF_HEX(&subchannel_indicator_addr, sizeof(subchannel_indicator_addr));
+out:
+ return rc;
}
/* allocate non-shared indicators and shared indicator */