diff options
Diffstat (limited to 'drivers/s390/cio/io_sch.h')
| -rw-r--r-- | drivers/s390/cio/io_sch.h | 71 |
1 files changed, 19 insertions, 52 deletions
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h index b108f4a5c7dd..85a11c1836e5 100644 --- a/drivers/s390/cio/io_sch.h +++ b/drivers/s390/cio/io_sch.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef S390_IO_SCH_H #define S390_IO_SCH_H @@ -8,15 +9,20 @@ #include "css.h" #include "orb.h" +struct io_subchannel_dma_area { + struct ccw1 sense_ccw; /* static ccw for sense command */ +}; + struct io_subchannel_private { union orb orb; /* operation request block */ - struct ccw1 sense_ccw; /* static ccw for sense command */ struct ccw_device *cdev;/* pointer to the child ccw device */ struct { unsigned int suspend:1; /* allow suspend */ unsigned int prefetch:1;/* deny prefetch */ unsigned int inter:1; /* suppress intermediate interrupts */ } __packed options; + struct io_subchannel_dma_area *dma_area; + dma_addr_t dma_area_dma; } __aligned(8); #define to_io_private(n) ((struct io_subchannel_private *) \ @@ -114,13 +120,19 @@ enum cdev_todo { #define FAKE_CMD_IRB 1 #define FAKE_TM_IRB 2 +struct ccw_device_dma_area { + struct senseid senseid; /* SenseID info */ + struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */ + struct irb irb; /* device status */ + struct pgid pgid[8]; /* path group IDs per chpid*/ +}; + struct ccw_device_private { struct ccw_device *cdev; struct subchannel *sch; int state; /* device state */ atomic_t onoff; struct ccw_dev_id dev_id; /* device id */ - struct subchannel_id schid; /* subchannel number */ struct ccw_request req; /* internal I/O request */ int iretry; u8 pgid_valid_mask; /* mask of valid PGIDs */ @@ -132,6 +144,8 @@ struct ccw_device_private { not operable */ u8 path_gone_mask; /* mask of paths, that became unavailable */ u8 path_new_mask; /* mask of paths, that became available */ + u8 path_broken_mask; /* mask of paths, which were found to be + unusable */ struct { unsigned int fast:1; /* post with "channel end" */ unsigned int repall:1; /* report every interrupt status */ @@ -146,7 +160,6 @@ struct ccw_device_private { unsigned int donotify:1; /* call notify function */ unsigned int recog_done:1; /* dev. recog. complete */ unsigned int fake_irb:2; /* deliver faked irb */ - unsigned int resuming:1; /* recognition while resume */ unsigned int pgroup:1; /* pathgroup is set up */ unsigned int mpath:1; /* multipathing is set up */ unsigned int pgid_unknown:1;/* unknown pgid state */ @@ -154,10 +167,7 @@ struct ccw_device_private { } __attribute__((packed)) flags; unsigned long intparm; /* user interruption parameter */ struct qdio_irq *qdio_data; - struct irb irb; /* device status */ - struct senseid senseid; /* SenseID info */ - struct pgid pgid[8]; /* path group IDs per chpid*/ - struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */ + int async_kill_io_rc; struct work_struct todo_work; enum cdev_todo todo; wait_queue_head_t wait_q; @@ -166,52 +176,9 @@ struct ccw_device_private { struct list_head cmb_list; /* list of measured devices */ u64 cmb_start_time; /* clock value of cmb reset */ void *cmb_wait; /* deferred cmb enable/disable */ + struct gen_pool *dma_pool; + struct ccw_device_dma_area *dma_area; enum interruption_class int_class; }; -static inline int rsch(struct subchannel_id schid) -{ - register struct subchannel_id reg1 asm("1") = schid; - int ccode; - - asm volatile( - " rsch\n" - " ipm %0\n" - " srl %0,28" - : "=d" (ccode) - : "d" (reg1) - : "cc", "memory"); - return ccode; -} - -static inline int hsch(struct subchannel_id schid) -{ - register struct subchannel_id reg1 asm("1") = schid; - int ccode; - - asm volatile( - " hsch\n" - " ipm %0\n" - " srl %0,28" - : "=d" (ccode) - : "d" (reg1) - : "cc"); - return ccode; -} - -static inline int xsch(struct subchannel_id schid) -{ - register struct subchannel_id reg1 asm("1") = schid; - int ccode; - - asm volatile( - " .insn rre,0xb2760000,%1,0\n" - " ipm %0\n" - " srl %0,28" - : "=d" (ccode) - : "d" (reg1) - : "cc"); - return ccode; -} - #endif |