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>
10 #include <asm/debug.h>
13 #define SCM_NR_PARTS 8
14 #define SCM_QUEUE_DELAY 5
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 */
24 struct list_head finished_requests;
25 #ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE
26 struct list_head cluster_list;
31 struct scm_blk_dev *bdev;
32 struct request *request;
35 struct list_head list;
38 #ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE
40 enum {CLUSTER_NONE, CLUSTER_READ, CLUSTER_WRITE} state;
41 struct list_head list;
47 #define to_aobrq(rq) container_of((void *) rq, struct aob_rq_header, data)
49 int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *);
50 void scm_blk_dev_cleanup(struct scm_blk_dev *);
51 void scm_blk_irq(struct scm_device *, void *, int);
53 void scm_request_finish(struct scm_request *);
54 void scm_request_requeue(struct scm_request *);
56 int scm_drv_init(void);
57 void scm_drv_cleanup(void);
59 #ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE
60 void __scm_free_rq_cluster(struct scm_request *);
61 int __scm_alloc_rq_cluster(struct scm_request *);
62 void scm_request_cluster_init(struct scm_request *);
63 bool scm_reserve_cluster(struct scm_request *);
64 void scm_release_cluster(struct scm_request *);
65 void scm_blk_dev_cluster_setup(struct scm_blk_dev *);
66 bool scm_need_cluster_request(struct scm_request *);
67 void scm_initiate_cluster_request(struct scm_request *);
68 void scm_cluster_request_irq(struct scm_request *);
69 bool scm_test_cluster_request(struct scm_request *);
70 bool scm_cluster_size_valid(void);
72 #define __scm_free_rq_cluster(scmrq) {}
73 #define __scm_alloc_rq_cluster(scmrq) 0
74 #define scm_request_cluster_init(scmrq) {}
75 #define scm_reserve_cluster(scmrq) true
76 #define scm_release_cluster(scmrq) {}
77 #define scm_blk_dev_cluster_setup(bdev) {}
78 #define scm_need_cluster_request(scmrq) false
79 #define scm_initiate_cluster_request(scmrq) {}
80 #define scm_cluster_request_irq(scmrq) {}
81 #define scm_test_cluster_request(scmrq) false
82 #define scm_cluster_size_valid() true
85 extern debug_info_t *scm_debug;
87 #define SCM_LOG(imp, txt) do { \
88 debug_text_event(scm_debug, imp, txt); \
91 static inline void SCM_LOG_HEX(int level, void *data, int length)
93 if (level > scm_debug->level)
96 debug_event(scm_debug, level, data, length);
97 length -= scm_debug->buf_size;
98 data += scm_debug->buf_size;
102 static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev)
109 .address = scmdev->address,
110 .oper_state = scmdev->attrs.oper_state,
111 .rank = scmdev->attrs.rank,
114 SCM_LOG_HEX(level, &data, sizeof(data));
117 #endif /* SCM_BLK_H */