4 #include <linux/types.h>
6 #include <asm/ccwdev.h>
10 * command-mode operation request block
13 u32 intparm; /* interruption parameter */
14 u32 key : 4; /* flags, like key, suspend control, etc. */
15 u32 spnd : 1; /* suspend control */
16 u32 res1 : 1; /* reserved */
17 u32 mod : 1; /* modification control */
18 u32 sync : 1; /* synchronize control */
19 u32 fmt : 1; /* format control */
20 u32 pfch : 1; /* prefetch control */
21 u32 isic : 1; /* initial-status-interruption control */
22 u32 alcc : 1; /* address-limit-checking control */
23 u32 ssic : 1; /* suppress-suspended-interr. control */
24 u32 res2 : 1; /* reserved */
25 u32 c64 : 1; /* IDAW/QDIO 64 bit control */
26 u32 i2k : 1; /* IDAW 2/4kB block size control */
27 u32 lpm : 8; /* logical path mask */
28 u32 ils : 1; /* incorrect length */
29 u32 zero : 6; /* reserved zeros */
30 u32 orbx : 1; /* ORB extension control */
31 u32 cpa; /* channel program address */
32 } __attribute__ ((packed, aligned(4)));
35 * transport-mode operation request block
55 } __attribute__ ((packed, aligned(4)));
60 } __attribute__ ((packed, aligned(4)));
62 struct io_subchannel_private {
63 union orb orb; /* operation request block */
64 struct ccw1 sense_ccw; /* static ccw for sense command */
65 } __attribute__ ((aligned(8)));
67 #define to_io_private(n) ((struct io_subchannel_private *)n->private)
68 #define sch_get_cdev(n) (dev_get_drvdata(&n->dev))
69 #define sch_set_cdev(n, c) (dev_set_drvdata(&n->dev, c))
74 * Possible status values for a CCW request's I/O.
86 * ccw_request - Internal CCW request.
87 * @cp: channel program to start
88 * @timeout: maximum allowable time in jiffies between start I/O and interrupt
89 * @maxretries: number of retries per I/O operation and path
90 * @lpm: mask of paths to use
91 * @check: optional callback that determines if results are final
92 * @filter: optional callback to adjust request status based on IRB data
93 * @callback: final callback
94 * @data: user-defined pointer passed to all callbacks
95 * @mask: current path mask
96 * @retries: current number of retries
97 * @drc: delayed return code
98 * @cancel: non-zero if request was cancelled
99 * @done: non-zero if request was finished
103 unsigned long timeout;
106 int (*check)(struct ccw_device *, void *);
107 enum io_status (*filter)(struct ccw_device *, void *, struct irb *,
109 void (*callback)(struct ccw_device *, void *, int);
111 /* These fields are used internally. */
117 } __attribute__((packed));
120 * sense-id response buffer layout
124 u8 reserved; /* always 0x'FF' */
125 u16 cu_type; /* control unit type */
126 u8 cu_model; /* control unit model */
127 u16 dev_type; /* device type */
128 u8 dev_model; /* device model */
129 u8 unused; /* padding byte */
131 struct ciw ciw[MAX_CIWS]; /* variable # of CIWs */
132 } __attribute__ ((packed, aligned(4)));
136 CDEV_TODO_ENABLE_CMF,
140 CDEV_TODO_UNREG_EVAL,
143 struct ccw_device_private {
144 struct ccw_device *cdev;
145 struct subchannel *sch;
146 int state; /* device state */
148 struct ccw_dev_id dev_id; /* device id */
149 struct subchannel_id schid; /* subchannel number */
150 struct ccw_request req; /* internal I/O request */
152 u8 pgid_valid_mask; /* mask of valid PGIDs */
154 unsigned int fast:1; /* post with "channel end" */
155 unsigned int repall:1; /* report every interrupt status */
156 unsigned int pgroup:1; /* do path grouping */
157 unsigned int force:1; /* allow forced online */
158 unsigned int mpath:1; /* do multipathing */
159 } __attribute__ ((packed)) options;
161 unsigned int esid:1; /* Ext. SenseID supported by HW */
162 unsigned int dosense:1; /* delayed SENSE required */
163 unsigned int doverify:1; /* delayed path verification */
164 unsigned int donotify:1; /* call notify function */
165 unsigned int recog_done:1; /* dev. recog. complete */
166 unsigned int fake_irb:1; /* deliver faked irb */
167 unsigned int resuming:1; /* recognition while resume */
168 unsigned int pgroup:1; /* pathgroup is set up */
169 unsigned int mpath:1; /* multipathing is set up */
170 unsigned int initialized:1; /* set if initial reference held */
171 } __attribute__((packed)) flags;
172 unsigned long intparm; /* user interruption parameter */
173 struct qdio_irq *qdio_data;
174 struct irb irb; /* device status */
175 struct senseid senseid; /* SenseID info */
176 struct pgid pgid[8]; /* path group IDs per chpid*/
177 struct ccw1 iccws[2]; /* ccws for SNID/SID/SPGID commands */
178 struct work_struct todo_work;
180 wait_queue_head_t wait_q;
181 struct timer_list timer;
182 void *cmb; /* measurement information */
183 struct list_head cmb_list; /* list of measured devices */
184 u64 cmb_start_time; /* clock value of cmb reset */
185 void *cmb_wait; /* deferred cmb enable/disable */
188 static inline int ssch(struct subchannel_id schid, union orb *addr)
190 register struct subchannel_id reg1 asm("1") = schid;
200 : "d" (reg1), "a" (addr), "m" (*addr)
205 static inline int rsch(struct subchannel_id schid)
207 register struct subchannel_id reg1 asm("1") = schid;
220 static inline int csch(struct subchannel_id schid)
222 register struct subchannel_id reg1 asm("1") = schid;
235 static inline int hsch(struct subchannel_id schid)
237 register struct subchannel_id reg1 asm("1") = schid;
250 static inline int xsch(struct subchannel_id schid)
252 register struct subchannel_id reg1 asm("1") = schid;
256 " .insn rre,0xb2760000,%1,0\n"