[S390] cio: Introduce subchannel->private.
Introduce a private pointer in struct subchannel to store
per-subchannel type data (cannot use dev->priv since this
is already used for something else).
Create a new header io_sch.h for I/O subchannel specific structures
and instructions.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index 7446c399..a6ef218 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -11,32 +11,32 @@
* path management control word
*/
struct pmcw {
- __u32 intparm; /* interruption parameter */
- __u32 qf : 1; /* qdio facility */
- __u32 res0 : 1; /* reserved zeros */
- __u32 isc : 3; /* interruption sublass */
- __u32 res5 : 3; /* reserved zeros */
- __u32 ena : 1; /* enabled */
- __u32 lm : 2; /* limit mode */
- __u32 mme : 2; /* measurement-mode enable */
- __u32 mp : 1; /* multipath mode */
- __u32 tf : 1; /* timing facility */
- __u32 dnv : 1; /* device number valid */
- __u32 dev : 16; /* device number */
- __u8 lpm; /* logical path mask */
- __u8 pnom; /* path not operational mask */
- __u8 lpum; /* last path used mask */
- __u8 pim; /* path installed mask */
- __u16 mbi; /* measurement-block index */
- __u8 pom; /* path operational mask */
- __u8 pam; /* path available mask */
- __u8 chpid[8]; /* CHPID 0-7 (if available) */
- __u32 unused1 : 8; /* reserved zeros */
- __u32 st : 3; /* subchannel type */
- __u32 unused2 : 18; /* reserved zeros */
- __u32 mbfc : 1; /* measurement block format control */
- __u32 xmwme : 1; /* extended measurement word mode enable */
- __u32 csense : 1; /* concurrent sense; can be enabled ...*/
+ u32 intparm; /* interruption parameter */
+ u32 qf : 1; /* qdio facility */
+ u32 res0 : 1; /* reserved zeros */
+ u32 isc : 3; /* interruption sublass */
+ u32 res5 : 3; /* reserved zeros */
+ u32 ena : 1; /* enabled */
+ u32 lm : 2; /* limit mode */
+ u32 mme : 2; /* measurement-mode enable */
+ u32 mp : 1; /* multipath mode */
+ u32 tf : 1; /* timing facility */
+ u32 dnv : 1; /* device number valid */
+ u32 dev : 16; /* device number */
+ u8 lpm; /* logical path mask */
+ u8 pnom; /* path not operational mask */
+ u8 lpum; /* last path used mask */
+ u8 pim; /* path installed mask */
+ u16 mbi; /* measurement-block index */
+ u8 pom; /* path operational mask */
+ u8 pam; /* path available mask */
+ u8 chpid[8]; /* CHPID 0-7 (if available) */
+ u32 unused1 : 8; /* reserved zeros */
+ u32 st : 3; /* subchannel type */
+ u32 unused2 : 18; /* reserved zeros */
+ u32 mbfc : 1; /* measurement block format control */
+ u32 xmwme : 1; /* extended measurement word mode enable */
+ u32 csense : 1; /* concurrent sense; can be enabled ...*/
/* ... per MSCH, however, if facility */
/* ... is not installed, this results */
/* ... in an operand exception. */
@@ -52,31 +52,6 @@
__u8 mda[4]; /* model dependent area */
} __attribute__ ((packed,aligned(4)));
-/*
- * operation request block
- */
-struct orb {
- __u32 intparm; /* interruption parameter */
- __u32 key : 4; /* flags, like key, suspend control, etc. */
- __u32 spnd : 1; /* suspend control */
- __u32 res1 : 1; /* reserved */
- __u32 mod : 1; /* modification control */
- __u32 sync : 1; /* synchronize control */
- __u32 fmt : 1; /* format control */
- __u32 pfch : 1; /* prefetch control */
- __u32 isic : 1; /* initial-status-interruption control */
- __u32 alcc : 1; /* address-limit-checking control */
- __u32 ssic : 1; /* suppress-suspended-interr. control */
- __u32 res2 : 1; /* reserved */
- __u32 c64 : 1; /* IDAW/QDIO 64 bit control */
- __u32 i2k : 1; /* IDAW 2/4kB block size control */
- __u32 lpm : 8; /* logical path mask */
- __u32 ils : 1; /* incorrect length */
- __u32 zero : 6; /* reserved zeros */
- __u32 orbx : 1; /* ORB extension control */
- __u32 cpa; /* channel program address */
-} __attribute__ ((packed,aligned(4)));
-
/* subchannel data structure used by I/O subroutines */
struct subchannel {
struct subchannel_id schid;
@@ -99,11 +74,10 @@
__u8 lpm; /* logical path mask */
__u8 opm; /* operational path mask */
struct schib schib; /* subchannel information block */
- struct orb orb; /* operation request block */
- struct ccw1 sense_ccw; /* static ccw for sense command */
struct chsc_ssd_info ssd_info; /* subchannel description */
struct device dev; /* entry in device tree */
struct css_driver *driver;
+ void *private; /* private per subchannel type data */
} __attribute__ ((aligned(8)));
#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */
@@ -133,10 +107,12 @@
extern int cio_is_console(struct subchannel_id);
extern struct subchannel *cio_get_console_subchannel(void);
extern spinlock_t * cio_get_console_lock(void);
+extern void *cio_get_console_priv(void);
#else
#define cio_is_console(schid) 0
#define cio_get_console_subchannel() NULL
-#define cio_get_console_lock() NULL;
+#define cio_get_console_lock() NULL
+#define cio_get_console_priv() NULL
#endif
extern int cio_show_msg;