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f30664e2 SO |
1 | #ifndef SCM_BLK_H |
2 | #define SCM_BLK_H | |
3 | ||
4 | #include <linux/interrupt.h> | |
5 | #include <linux/spinlock.h> | |
6 | #include <linux/blkdev.h> | |
7 | #include <linux/genhd.h> | |
8 | #include <linux/list.h> | |
9 | ||
10 | #include <asm/debug.h> | |
11 | #include <asm/eadm.h> | |
12 | ||
13 | #define SCM_NR_PARTS 8 | |
14 | #define SCM_QUEUE_DELAY 5 | |
15 | ||
16 | struct scm_blk_dev { | |
17 | struct tasklet_struct tasklet; | |
18 | struct request_queue *rq; | |
19 | struct gendisk *gendisk; | |
20 | struct scm_device *scmdev; | |
21 | spinlock_t rq_lock; /* guard the request queue */ | |
22 | spinlock_t lock; /* guard the rest of the blockdev */ | |
23 | atomic_t queued_reqs; | |
24 | struct list_head finished_requests; | |
25 | }; | |
26 | ||
27 | struct scm_request { | |
28 | struct scm_blk_dev *bdev; | |
29 | struct request *request; | |
30 | struct aidaw *aidaw; | |
31 | struct aob *aob; | |
32 | struct list_head list; | |
33 | u8 retries; | |
34 | int error; | |
35 | }; | |
36 | ||
37 | #define to_aobrq(rq) container_of((void *) rq, struct aob_rq_header, data) | |
38 | ||
39 | int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *); | |
40 | void scm_blk_dev_cleanup(struct scm_blk_dev *); | |
41 | void scm_blk_irq(struct scm_device *, void *, int); | |
42 | ||
43 | int scm_drv_init(void); | |
44 | void scm_drv_cleanup(void); | |
45 | ||
46 | ||
47 | extern debug_info_t *scm_debug; | |
48 | ||
49 | #define SCM_LOG(imp, txt) do { \ | |
50 | debug_text_event(scm_debug, imp, txt); \ | |
51 | } while (0) | |
52 | ||
53 | static inline void SCM_LOG_HEX(int level, void *data, int length) | |
54 | { | |
55 | if (level > scm_debug->level) | |
56 | return; | |
57 | while (length > 0) { | |
58 | debug_event(scm_debug, level, data, length); | |
59 | length -= scm_debug->buf_size; | |
60 | data += scm_debug->buf_size; | |
61 | } | |
62 | } | |
63 | ||
64 | static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev) | |
65 | { | |
66 | struct { | |
67 | u64 address; | |
68 | u8 oper_state; | |
69 | u8 rank; | |
70 | } __packed data = { | |
71 | .address = scmdev->address, | |
72 | .oper_state = scmdev->attrs.oper_state, | |
73 | .rank = scmdev->attrs.rank, | |
74 | }; | |
75 | ||
76 | SCM_LOG_HEX(level, &data, sizeof(data)); | |
77 | } | |
78 | ||
79 | #endif /* SCM_BLK_H */ |