diff options
Diffstat (limited to 'drivers/s390/cio/cio.h')
| -rw-r--r-- | drivers/s390/cio/cio.h | 162 |
1 files changed, 78 insertions, 84 deletions
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h index c50a9da420a..a01376ae174 100644 --- a/drivers/s390/cio/cio.h +++ b/drivers/s390/cio/cio.h @@ -1,121 +1,113 @@ #ifndef S390_CIO_H #define S390_CIO_H -/* - * where we put the ssd info - */ -struct ssd_info { - __u8 valid:1; - __u8 type:7; /* subchannel type */ - __u8 chpid[8]; /* chpids */ - __u16 fla[8]; /* full link addresses */ -} __attribute__ ((packed)); +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/mod_devicetable.h> +#include <asm/chpid.h> +#include <asm/cio.h> +#include <asm/fcx.h> +#include <asm/schid.h> +#include "chsc.h" /* * 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 w : 1; + 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. */ } __attribute__ ((packed)); +/* Target SCHIB configuration. */ +struct schib_config { + u64 mba; + u32 intparm; + u16 mbi; + u32 isc:3; + u32 ena:1; + u32 mme:2; + u32 mp:1; + u32 csense:1; + u32 mbfc:1; +} __attribute__ ((packed)); + /* * subchannel information block */ struct schib { struct pmcw pmcw; /* path management control word */ - struct scsw scsw; /* subchannel status word */ + union scsw scsw; /* subchannel status word */ __u64 mba; /* measurement block address */ __u8 mda[4]; /* model dependent area */ } __attribute__ ((packed,aligned(4))); /* - * operation request block + * When rescheduled, todo's with higher values will overwrite those + * with lower values. */ -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))); +enum sch_todo { + SCH_TODO_NOTHING, + SCH_TODO_EVAL, + SCH_TODO_UNREG, +}; /* subchannel data structure used by I/O subroutines */ struct subchannel { - unsigned int irq; /* aka. subchannel number */ - spinlock_t lock; /* subchannel lock */ - + struct subchannel_id schid; + spinlock_t *lock; /* subchannel lock */ + struct mutex reg_mutex; enum { SUBCHANNEL_TYPE_IO = 0, SUBCHANNEL_TYPE_CHSC = 1, - SUBCHANNEL_TYPE_MESSAGE = 2, + SUBCHANNEL_TYPE_MSG = 2, SUBCHANNEL_TYPE_ADM = 3, } st; /* subchannel type */ - - struct { - unsigned int suspend:1; /* allow suspend */ - unsigned int prefetch:1;/* deny prefetch */ - unsigned int inter:1; /* suppress intermediate interrupts */ - } __attribute__ ((packed)) options; - __u8 vpm; /* verified path mask */ __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 ssd_info ssd_info; /* subchannel description */ + int isc; /* desired interruption subclass */ + struct chsc_ssd_info ssd_info; /* subchannel description */ struct device dev; /* entry in device tree */ struct css_driver *driver; + enum sch_todo todo; + struct work_struct todo_work; + struct schib_config config; } __attribute__ ((aligned(8))); -#define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */ +DECLARE_PER_CPU(struct irb, cio_irb); #define to_subchannel(n) container_of(n, struct subchannel, dev) -extern int cio_validate_subchannel (struct subchannel *, unsigned int); -extern int cio_enable_subchannel (struct subchannel *, unsigned int); +extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id); +extern int cio_enable_subchannel(struct subchannel *, u32); extern int cio_disable_subchannel (struct subchannel *); extern int cio_cancel (struct subchannel *); extern int cio_clear (struct subchannel *); @@ -125,19 +117,21 @@ extern int cio_start (struct subchannel *, struct ccw1 *, __u8); extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8); extern int cio_cancel (struct subchannel *); extern int cio_set_options (struct subchannel *, int); -extern int cio_get_options (struct subchannel *); -extern int cio_modify (struct subchannel *); +extern int cio_update_schib(struct subchannel *sch); +extern int cio_commit_config(struct subchannel *sch); + +int cio_tm_start_key(struct subchannel *sch, struct tcw *tcw, u8 lpm, u8 key); +int cio_tm_intrg(struct subchannel *sch); + /* Use with care. */ #ifdef CONFIG_CCW_CONSOLE extern struct subchannel *cio_probe_console(void); -extern void cio_release_console(void); -extern int cio_is_console(int irq); -extern struct subchannel *cio_get_console_subchannel(void); +extern int cio_is_console(struct subchannel_id); +extern void cio_register_early_subchannels(void); +extern void cio_tsch(struct subchannel *sch); #else -#define cio_is_console(irq) 0 -#define cio_get_console_subchannel() NULL +#define cio_is_console(schid) 0 +static inline void cio_register_early_subchannels(void) {} #endif -extern int cio_show_msg; - #endif |