1
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>
8#include <linux/blk-mq.h>
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
18struct scm_blk_dev {
19 struct request_queue *rq;
20 struct gendisk *gendisk;
21 struct blk_mq_tag_set tag_set;
22 struct scm_device *scmdev;
23 spinlock_t lock;
24 atomic_t queued_reqs;
25 enum {SCM_OPER, SCM_WR_PROHIBIT} state;
26 struct list_head finished_requests;
27};
28
29struct scm_request {
30 struct scm_blk_dev *bdev;
31 struct aidaw *next_aidaw;
32 struct request **request;
33 struct aob *aob;
34 struct list_head list;
35 u8 retries;
36 blk_status_t error;
37};
38
39#define to_aobrq(rq) container_of((void *) rq, struct aob_rq_header, data)
40
41int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *);
42void scm_blk_dev_cleanup(struct scm_blk_dev *);
43void scm_blk_set_available(struct scm_blk_dev *);
44void scm_blk_irq(struct scm_device *, void *, blk_status_t);
45
46struct aidaw *scm_aidaw_fetch(struct scm_request *scmrq, unsigned int bytes);
47
48int scm_drv_init(void);
49void scm_drv_cleanup(void);
50
51extern 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
57static inline void SCM_LOG_HEX(int level, void *data, int length)
58{
59 debug_event(scm_debug, level, data, length);
60}
61
62static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev)
63{
64 struct {
65 u64 address;
66 u8 oper_state;
67 u8 rank;
68 } __packed data = {
69 .address = scmdev->address,
70 .oper_state = scmdev->attrs.oper_state,
71 .rank = scmdev->attrs.rank,
72 };
73
74 SCM_LOG_HEX(level, &data, sizeof(data));
75}
76
77#endif
78
