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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f30664e2 SO |
2 | #ifndef SCM_BLK_H |
3 | #define SCM_BLK_H | |
4 | ||
5 | #include <linux/interrupt.h> | |
6 | #include <linux/spinlock.h> | |
7 | #include <linux/blkdev.h> | |
12d90762 | 8 | #include <linux/blk-mq.h> |
f30664e2 SO |
9 | #include <linux/genhd.h> |
10 | #include <linux/list.h> | |
11 | ||
12 | #include <asm/debug.h> | |
13 | #include <asm/eadm.h> | |
14 | ||
15 | #define SCM_NR_PARTS 8 | |
16 | #define SCM_QUEUE_DELAY 5 | |
17 | ||
18 | struct scm_blk_dev { | |
f30664e2 SO |
19 | struct request_queue *rq; |
20 | struct gendisk *gendisk; | |
12d90762 | 21 | struct blk_mq_tag_set tag_set; |
f30664e2 | 22 | struct scm_device *scmdev; |
9861dbd5 | 23 | spinlock_t lock; |
f30664e2 | 24 | atomic_t queued_reqs; |
4fa3c019 | 25 | enum {SCM_OPER, SCM_WR_PROHIBIT} state; |
f30664e2 SO |
26 | struct list_head finished_requests; |
27 | }; | |
28 | ||
29 | struct scm_request { | |
30 | struct scm_blk_dev *bdev; | |
de88d0d2 | 31 | struct aidaw *next_aidaw; |
8622384f | 32 | struct request **request; |
f30664e2 SO |
33 | struct aob *aob; |
34 | struct list_head list; | |
35 | u8 retries; | |
2a842aca | 36 | blk_status_t error; |
f30664e2 SO |
37 | }; |
38 | ||
39 | #define to_aobrq(rq) container_of((void *) rq, struct aob_rq_header, data) | |
40 | ||
41 | int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *); | |
42 | void scm_blk_dev_cleanup(struct scm_blk_dev *); | |
4fa3c019 | 43 | void scm_blk_set_available(struct scm_blk_dev *); |
2a842aca | 44 | void scm_blk_irq(struct scm_device *, void *, blk_status_t); |
f30664e2 | 45 | |
de88d0d2 | 46 | struct aidaw *scm_aidaw_fetch(struct scm_request *scmrq, unsigned int bytes); |
9d4df77f | 47 | |
f30664e2 SO |
48 | int scm_drv_init(void); |
49 | void scm_drv_cleanup(void); | |
50 | ||
f30664e2 SO |
51 | extern debug_info_t *scm_debug; |
52 | ||
53 | #define SCM_LOG(imp, txt) do { \ | |
54 | debug_text_event(scm_debug, imp, txt); \ | |
55 | } while (0) | |
56 | ||
57 | static inline void SCM_LOG_HEX(int level, void *data, int length) | |
58 | { | |
8e6a8285 | 59 | if (!debug_level_enabled(scm_debug, level)) |
f30664e2 SO |
60 | return; |
61 | while (length > 0) { | |
62 | debug_event(scm_debug, level, data, length); | |
63 | length -= scm_debug->buf_size; | |
64 | data += scm_debug->buf_size; | |
65 | } | |
66 | } | |
67 | ||
68 | static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev) | |
69 | { | |
70 | struct { | |
71 | u64 address; | |
72 | u8 oper_state; | |
73 | u8 rank; | |
74 | } __packed data = { | |
75 | .address = scmdev->address, | |
76 | .oper_state = scmdev->attrs.oper_state, | |
77 | .rank = scmdev->attrs.rank, | |
78 | }; | |
79 | ||
80 | SCM_LOG_HEX(level, &data, sizeof(data)); | |
81 | } | |
82 | ||
83 | #endif /* SCM_BLK_H */ |