| | 1 | #ifndef S390_CIO_H |
| | 2 | #define S390_CIO_H |
| | 3 | |
| | 4 | #include <linux/mutex.h> |
| | 5 | #include <linux/device.h> |
| | 6 | #include <linux/mod_devicetable.h> |
| | 7 | #include <asm/chpid.h> |
| | 8 | #include <asm/cio.h> |
| | 9 | #include <asm/fcx.h> |
| | 10 | #include <asm/schid.h> |
| | 11 | #include "chsc.h" |
| | 12 | |
| | 13 | /* |
| | 14 | * path management control word |
| | 15 | */ |
| | 16 | struct pmcw { |
| | 17 | u32 intparm; /* interruption parameter */ |
| | 18 | u32 qf : 1; /* qdio facility */ |
| | 19 | u32 w : 1; |
| | 20 | u32 isc : 3; /* interruption sublass */ |
| | 21 | u32 res5 : 3; /* reserved zeros */ |
| | 22 | u32 ena : 1; /* enabled */ |
| | 23 | u32 lm : 2; /* limit mode */ |
| | 24 | u32 mme : 2; /* measurement-mode enable */ |
| | 25 | u32 mp : 1; /* multipath mode */ |
| | 26 | u32 tf : 1; /* timing facility */ |
| | 27 | u32 dnv : 1; /* device number valid */ |
| | 28 | u32 dev : 16; /* device number */ |
| | 29 | u8 lpm; /* logical path mask */ |
| | 30 | u8 pnom; /* path not operational mask */ |
| | 31 | u8 lpum; /* last path used mask */ |
| | 32 | u8 pim; /* path installed mask */ |
| | 33 | u16 mbi; /* measurement-block index */ |
| | 34 | u8 pom; /* path operational mask */ |
| | 35 | u8 pam; /* path available mask */ |
| | 36 | u8 chpid[8]; /* CHPID 0-7 (if available) */ |
| | 37 | u32 unused1 : 8; /* reserved zeros */ |
| | 38 | u32 st : 3; /* subchannel type */ |
| | 39 | u32 unused2 : 18; /* reserved zeros */ |
| | 40 | u32 mbfc : 1; /* measurement block format control */ |
| | 41 | u32 xmwme : 1; /* extended measurement word mode enable */ |
| | 42 | u32 csense : 1; /* concurrent sense; can be enabled ...*/ |
| | 43 | /* ... per MSCH, however, if facility */ |
| | 44 | /* ... is not installed, this results */ |
| | 45 | /* ... in an operand exception. */ |
| | 46 | } __attribute__ ((packed)); |
| | 47 | |
| | 48 | /* Target SCHIB configuration. */ |
| | 49 | struct schib_config { |
| | 50 | u64 mba; |
| | 51 | u32 intparm; |
| | 52 | u16 mbi; |
| | 53 | u32 isc:3; |
| | 54 | u32 ena:1; |
| | 55 | u32 mme:2; |
| | 56 | u32 mp:1; |
| | 57 | u32 csense:1; |
| | 58 | u32 mbfc:1; |
| | 59 | } __attribute__ ((packed)); |
| | 60 | |
| | 61 | /* |
| | 62 | * subchannel information block |
| | 63 | */ |
| | 64 | struct schib { |
| | 65 | struct pmcw pmcw; /* path management control word */ |
| | 66 | union scsw scsw; /* subchannel status word */ |
| | 67 | __u64 mba; /* measurement block address */ |
| | 68 | __u8 mda[4]; /* model dependent area */ |
| | 69 | } __attribute__ ((packed,aligned(4))); |
| | 70 | |
| | 71 | /* subchannel data structure used by I/O subroutines */ |
| | 72 | struct subchannel { |
| | 73 | struct subchannel_id schid; |
| | 74 | spinlock_t *lock; /* subchannel lock */ |
| | 75 | struct mutex reg_mutex; |
| | 76 | enum { |
| | 77 | SUBCHANNEL_TYPE_IO = 0, |
| | 78 | SUBCHANNEL_TYPE_CHSC = 1, |
| | 79 | SUBCHANNEL_TYPE_MSG = 2, |
| | 80 | SUBCHANNEL_TYPE_ADM = 3, |
| | 81 | } st; /* subchannel type */ |
| | 82 | |
| | 83 | struct { |
| | 84 | unsigned int suspend:1; /* allow suspend */ |
| | 85 | unsigned int prefetch:1;/* deny prefetch */ |
| | 86 | unsigned int inter:1; /* suppress intermediate interrupts */ |
| | 87 | } __attribute__ ((packed)) options; |
| | 88 | |
| | 89 | __u8 vpm; /* verified path mask */ |
| | 90 | __u8 lpm; /* logical path mask */ |
| | 91 | __u8 opm; /* operational path mask */ |
| | 92 | struct schib schib; /* subchannel information block */ |
| | 93 | int isc; /* desired interruption subclass */ |
| | 94 | struct chsc_ssd_info ssd_info; /* subchannel description */ |
| | 95 | struct device dev; /* entry in device tree */ |
| | 96 | struct css_driver *driver; |
| | 97 | void *private; /* private per subchannel type data */ |
| | 98 | struct work_struct work; |
| | 99 | struct schib_config config; |
| | 100 | } __attribute__ ((aligned(8))); |
| | 101 | |
| | 102 | #define IO_INTERRUPT_TYPE 0 /* I/O interrupt type */ |
| | 103 | |
| | 104 | #define to_subchannel(n) container_of(n, struct subchannel, dev) |
| | 105 | |
| | 106 | extern int cio_validate_subchannel (struct subchannel *, struct subchannel_id); |
| | 107 | extern int cio_enable_subchannel(struct subchannel *, u32); |
| | 108 | extern int cio_disable_subchannel (struct subchannel *); |
| | 109 | extern int cio_cancel (struct subchannel *); |
| | 110 | extern int cio_clear (struct subchannel *); |
| | 111 | extern int cio_resume (struct subchannel *); |
| | 112 | extern int cio_halt (struct subchannel *); |
| | 113 | extern int cio_start (struct subchannel *, struct ccw1 *, __u8); |
| | 114 | extern int cio_start_key (struct subchannel *, struct ccw1 *, __u8, __u8); |
| | 115 | extern int cio_cancel (struct subchannel *); |
| | 116 | extern int cio_set_options (struct subchannel *, int); |
| | 117 | extern int cio_get_options (struct subchannel *); |
| | 118 | extern int cio_update_schib(struct subchannel *sch); |
| | 119 | extern int cio_commit_config(struct subchannel *sch); |
| | 120 | |
| | 121 | int cio_tm_start_key(struct subchannel *sch, struct tcw *tcw, u8 lpm, u8 key); |
| | 122 | int cio_tm_intrg(struct subchannel *sch); |
| | 123 | |
| | 124 | int cio_create_sch_lock(struct subchannel *); |
| | 125 | void do_adapter_IO(u8 isc); |
| | 126 | void do_IRQ(struct pt_regs *); |
| | 127 | |
| | 128 | /* Use with care. */ |
| | 129 | #ifdef CONFIG_CCW_CONSOLE |
| | 130 | extern struct subchannel *cio_probe_console(void); |
| | 131 | extern void cio_release_console(void); |
| | 132 | extern int cio_is_console(struct subchannel_id); |
| | 133 | extern struct subchannel *cio_get_console_subchannel(void); |
| | 134 | extern spinlock_t * cio_get_console_lock(void); |
| | 135 | extern void *cio_get_console_priv(void); |
| | 136 | #else |
| | 137 | #define cio_is_console(schid) 0 |
| | 138 | #define cio_get_console_subchannel() NULL |
| | 139 | #define cio_get_console_lock() NULL |
| | 140 | #define cio_get_console_priv() NULL |
| | 141 | #endif |
| | 142 | |
| | 143 | #endif |
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame_incremental