[S390] cio: Rework css driver.

Rework the css driver methods to provide sane callbacks for
subchannels of all types.

As a bonus, this cleans up and simplyfies the machine check
handling for I/O subchannels a lot.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

1 files changed, 12 insertions, 1 deletions

diff --git a/drivers/s390/cio/chp.h b/drivers/s390/cio/chp.h
index 59c2fc069d9e..f03b0d2cdc09 100644
--- a/drivers/s390/cio/chp.h
+++ b/drivers/s390/cio/chp.h
@@ -19,6 +19,17 @@
 #define CHP_STATUS_RESERVED             2
 #define CHP_STATUS_NOT_RECOGNIZED       3
 
+#define CHP_ONLINE 0
+#define CHP_OFFLINE 1
+#define CHP_VARY_ON 2
+#define CHP_VARY_OFF 3
+
+struct res_acc_data {
+        struct chp_id chpid;
+        u32 fla_mask;
+        u16 fla;
+};
+
 static inline int chp_test_bit(u8 *bitmap, int num)
 {
         int byte = num >> 3;
@@ -50,5 +61,5 @@ int chp_new(struct chp_id chpid);
 void chp_cfg_schedule(struct chp_id chpid, int configure);
 void chp_cfg_cancel_deconfigure(struct chp_id chpid);
 int chp_info_get_status(struct chp_id chpid);
-
+int chp_ssd_get_mask(struct chsc_ssd_info *, struct res_acc_data *);
 #endif /* S390_CHP_H */