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authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>2007-04-27 16:01:31 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-04-27 16:01:39 +0200
commite5854a5839fa426a7873f038080f63587de5f1f1 (patch)
treec0a3705df925e652ff0694a47e7acb98e5f7d7bd /drivers/s390/cio/chsc.c
parentf5ba6c863617c15d22cce5f8666ff4c832773025 (diff)
[S390] cio: Channel-path configure function.
Add a new attribute to the channel-path sysfs directory through which channel-path configure operations can be triggered. Also listen for hardware events requesting channel-path configure operations and process them accordingly. Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chsc.c')
-rw-r--r--drivers/s390/cio/chsc.c44
1 files changed, 43 insertions, 1 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index d99f525eac0..3dec460bba2 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -15,12 +15,12 @@
#include <linux/device.h>
#include <asm/cio.h>
+#include <asm/chpid.h>
#include "css.h"
#include "cio.h"
#include "cio_debug.h"
#include "ioasm.h"
-#include "chpid.h"
#include "chp.h"
#include "chsc.h"
@@ -498,6 +498,45 @@ static int chsc_process_sei_res_acc(struct chsc_sei_area *sei_area)
return rc;
}
+struct chp_config_data {
+ u8 map[32];
+ u8 op;
+ u8 pc;
+};
+
+static int chsc_process_sei_chp_config(struct chsc_sei_area *sei_area)
+{
+ struct chp_config_data *data;
+ struct chp_id chpid;
+ int num;
+
+ CIO_CRW_EVENT(4, "chsc: channel-path-configuration notification\n");
+ if (sei_area->rs != 0)
+ return 0;
+ data = (struct chp_config_data *) &(sei_area->ccdf);
+ chp_id_init(&chpid);
+ for (num = 0; num <= __MAX_CHPID; num++) {
+ if (!chp_test_bit(data->map, num))
+ continue;
+ chpid.id = num;
+ printk(KERN_WARNING "cio: processing configure event %d for "
+ "chpid %x.%02x\n", data->op, chpid.cssid, chpid.id);
+ switch (data->op) {
+ case 0:
+ chp_cfg_schedule(chpid, 1);
+ break;
+ case 1:
+ chp_cfg_schedule(chpid, 0);
+ break;
+ case 2:
+ chp_cfg_cancel_deconfigure(chpid);
+ break;
+ }
+ }
+
+ return 0;
+}
+
static int chsc_process_sei(struct chsc_sei_area *sei_area)
{
int rc;
@@ -514,6 +553,9 @@ static int chsc_process_sei(struct chsc_sei_area *sei_area)
case 2: /* i/o resource accessibiliy */
rc = chsc_process_sei_res_acc(sei_area);
break;
+ case 8: /* channel-path-configuration notification */
+ rc = chsc_process_sei_chp_config(sei_area);
+ break;
default: /* other stuff */
CIO_CRW_EVENT(4, "chsc: unhandled sei content code %d\n",
sei_area->cc);