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-rw-r--r--drivers/s390/cio/ccwreq.c4
-rw-r--r--drivers/s390/cio/chp.c2
-rw-r--r--drivers/s390/cio/chp.h2
-rw-r--r--drivers/s390/cio/chsc.h11
-rw-r--r--drivers/s390/cio/chsc_sch.c2
-rw-r--r--drivers/s390/cio/cio.c9
-rw-r--r--drivers/s390/cio/cio.h2
-rw-r--r--drivers/s390/cio/device_fsm.c4
-rw-r--r--drivers/s390/cio/device_ops.c13
-rw-r--r--drivers/s390/cio/eadm_sch.c2
10 files changed, 27 insertions, 24 deletions
diff --git a/drivers/s390/cio/ccwreq.c b/drivers/s390/cio/ccwreq.c
index 5156264d0c7..07676c22d51 100644
--- a/drivers/s390/cio/ccwreq.c
+++ b/drivers/s390/cio/ccwreq.c
@@ -46,7 +46,7 @@ static u16 ccwreq_next_path(struct ccw_device *cdev)
goto out;
}
req->retries = req->maxretries;
- req->mask = lpm_adjust(req->mask >>= 1, req->lpm);
+ req->mask = lpm_adjust(req->mask >> 1, req->lpm);
out:
return req->mask;
}
@@ -252,7 +252,7 @@ static void ccwreq_log_status(struct ccw_device *cdev, enum io_status status)
*/
void ccw_request_handler(struct ccw_device *cdev)
{
- struct irb *irb = (struct irb *)&S390_lowcore.irb;
+ struct irb *irb = &__get_cpu_var(cio_irb);
struct ccw_request *req = &cdev->private->req;
enum io_status status;
int rc = -EOPNOTSUPP;
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 6c440d4349d..d497aa05a72 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -509,7 +509,7 @@ out:
* On success return a newly allocated copy of the channel-path description
* data associated with the given channel-path ID. Return %NULL on error.
*/
-void *chp_get_chp_desc(struct chp_id chpid)
+struct channel_path_desc *chp_get_chp_desc(struct chp_id chpid)
{
struct channel_path *chp;
struct channel_path_desc *desc;
diff --git a/drivers/s390/cio/chp.h b/drivers/s390/cio/chp.h
index 9284b785a06..4efd5b867cc 100644
--- a/drivers/s390/cio/chp.h
+++ b/drivers/s390/cio/chp.h
@@ -60,7 +60,7 @@ static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
int chp_get_status(struct chp_id chpid);
u8 chp_get_sch_opm(struct subchannel *sch);
int chp_is_registered(struct chp_id chpid);
-void *chp_get_chp_desc(struct chp_id chpid);
+struct channel_path_desc *chp_get_chp_desc(struct chp_id chpid);
void chp_remove_cmg_attr(struct channel_path *chp);
int chp_add_cmg_attr(struct channel_path *chp);
int chp_update_desc(struct channel_path *chp);
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 7e53a9c8b0b..76c9b50700b 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -21,17 +21,6 @@ struct cmg_entry {
u32 values[NR_MEASUREMENT_ENTRIES];
} __attribute__ ((packed));
-struct channel_path_desc {
- u8 flags;
- u8 lsn;
- u8 desc;
- u8 chpid;
- u8 swla;
- u8 zeroes;
- u8 chla;
- u8 chpp;
-} __attribute__ ((packed));
-
struct channel_path_desc_fmt1 {
u8 flags;
u8 lsn;
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 1d3661af7bd..3d22d2a4ce1 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -58,7 +58,7 @@ static void chsc_subchannel_irq(struct subchannel *sch)
{
struct chsc_private *private = dev_get_drvdata(&sch->dev);
struct chsc_request *request = private->request;
- struct irb *irb = (struct irb *)&S390_lowcore.irb;
+ struct irb *irb = &__get_cpu_var(cio_irb);
CHSC_LOG(4, "irb");
CHSC_LOG_HEX(4, irb, sizeof(*irb));
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index 9e058c4657a..77f9c92df4b 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -46,6 +46,9 @@ debug_info_t *cio_debug_msg_id;
debug_info_t *cio_debug_trace_id;
debug_info_t *cio_debug_crw_id;
+DEFINE_PER_CPU_ALIGNED(struct irb, cio_irb);
+EXPORT_PER_CPU_SYMBOL(cio_irb);
+
/*
* Function: cio_debug_init
* Initializes three debug logs for common I/O:
@@ -560,7 +563,7 @@ static irqreturn_t do_cio_interrupt(int irq, void *dummy)
__this_cpu_write(s390_idle.nohz_delay, 1);
tpi_info = (struct tpi_info *) &get_irq_regs()->int_code;
- irb = (struct irb *) &S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
sch = (struct subchannel *)(unsigned long) tpi_info->intparm;
if (!sch) {
/* Clear pending interrupt condition. */
@@ -609,7 +612,7 @@ void cio_tsch(struct subchannel *sch)
struct irb *irb;
int irq_context;
- irb = (struct irb *)&S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
/* Store interrupt response block to lowcore. */
if (tsch(sch->schid, irb) != 0)
/* Not status pending or not operational. */
@@ -746,7 +749,7 @@ __clear_io_subchannel_easy(struct subchannel_id schid)
struct tpi_info ti;
if (tpi(&ti)) {
- tsch(ti.schid, (struct irb *)&S390_lowcore.irb);
+ tsch(ti.schid, &__get_cpu_var(cio_irb));
if (schid_equal(&ti.schid, &schid))
return 0;
}
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index d42f67412bd..a01376ae174 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -102,6 +102,8 @@ struct subchannel {
struct schib_config config;
} __attribute__ ((aligned(8)));
+DECLARE_PER_CPU(struct irb, cio_irb);
+
#define to_subchannel(n) container_of(n, struct subchannel, dev)
extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id);
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index c7638c54325..0bc902b3cd8 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -739,7 +739,7 @@ ccw_device_irq(struct ccw_device *cdev, enum dev_event dev_event)
struct irb *irb;
int is_cmd;
- irb = (struct irb *)&S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
is_cmd = !scsw_is_tm(&irb->scsw);
/* Check for unsolicited interrupt. */
if (!scsw_is_solicited(&irb->scsw)) {
@@ -805,7 +805,7 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event)
{
struct irb *irb;
- irb = (struct irb *)&S390_lowcore.irb;
+ irb = &__get_cpu_var(cio_irb);
/* Check for unsolicited interrupt. */
if (scsw_stctl(&irb->scsw) ==
(SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) {
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 4845d64f284..f3c417943da 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -563,14 +563,23 @@ out_unlock:
return rc;
}
-void *ccw_device_get_chp_desc(struct ccw_device *cdev, int chp_no)
+/**
+ * chp_get_chp_desc - return newly allocated channel-path descriptor
+ * @cdev: device to obtain the descriptor for
+ * @chp_idx: index of the channel path
+ *
+ * On success return a newly allocated copy of the channel-path description
+ * data associated with the given channel path. Return %NULL on error.
+ */
+struct channel_path_desc *ccw_device_get_chp_desc(struct ccw_device *cdev,
+ int chp_idx)
{
struct subchannel *sch;
struct chp_id chpid;
sch = to_subchannel(cdev->dev.parent);
chp_id_init(&chpid);
- chpid.id = sch->schib.pmcw.chpid[chp_no];
+ chpid.id = sch->schib.pmcw.chpid[chp_idx];
return chp_get_chp_desc(chpid);
}
diff --git a/drivers/s390/cio/eadm_sch.c b/drivers/s390/cio/eadm_sch.c
index 3a2ee4a740b..c4f7bf3e24c 100644
--- a/drivers/s390/cio/eadm_sch.c
+++ b/drivers/s390/cio/eadm_sch.c
@@ -134,7 +134,7 @@ static void eadm_subchannel_irq(struct subchannel *sch)
{
struct eadm_private *private = get_eadm_private(sch);
struct eadm_scsw *scsw = &sch->schib.scsw.eadm;
- struct irb *irb = (struct irb *)&S390_lowcore.irb;
+ struct irb *irb = &__get_cpu_var(cio_irb);
int error = 0;
EADM_LOG(6, "irq");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-03 04:58:41 +0000