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/list.h>
10
11#include <asm/debug.h>
12#include <asm/eadm.h>
13
14#define SCM_NR_PARTS 8
15#define SCM_QUEUE_DELAY 5
16
17struct scm_blk_dev {
18 struct request_queue *rq;
19 struct gendisk *gendisk;
20 struct blk_mq_tag_set tag_set;
21 struct scm_device *scmdev;
22 spinlock_t lock;
23 atomic_t queued_reqs;
24 enum {SCM_OPER, SCM_WR_PROHIBIT} state;
25 struct list_head finished_requests;
26};
27
28struct scm_request {
29 struct scm_blk_dev *bdev;
30 struct aidaw *next_aidaw;
31 struct request **request;
32 struct aob *aob;
33 struct list_head list;
34 u8 retries;
35 blk_status_t error;
36};
37
38#define to_aobrq(rq) container_of((void *) rq, struct aob_rq_header, data)
39
40int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *);
41void scm_blk_dev_cleanup(struct scm_blk_dev *);
42void scm_blk_set_available(struct scm_blk_dev *);
43void scm_blk_irq(struct scm_device *, void *, blk_status_t);
44
45struct aidaw *scm_aidaw_fetch(struct scm_request *scmrq, unsigned int bytes);
46
47int scm_drv_init(void);
48void scm_drv_cleanup(void);
49
50extern debug_info_t *scm_debug;
51
52#define SCM_LOG(imp, txt) do { \
53 debug_text_event(scm_debug, imp, txt); \
54 } while (0)
55
56static inline void SCM_LOG_HEX(int level, void *data, int length)
57{
58 debug_event(scm_debug, level, data, length);
59}
60
61static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev)
62{
63 struct {
64 u64 address;
65 u8 oper_state;
66 u8 rank;
67 } __packed data = {
68 .address = scmdev->address,
69 .oper_state = scmdev->attrs.oper_state,
70 .rank = scmdev->attrs.rank,
71 };
72
73 SCM_LOG_HEX(level, &data, sizeof(data));
74}
75
76#endif
77
