135 lines
3.6 KiB
C
135 lines
3.6 KiB
C
#ifndef SCM_BLK_H
|
|
#define SCM_BLK_H
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/genhd.h>
|
|
#include <linux/list.h>
|
|
|
|
#include <asm/debug.h>
|
|
#include <asm/eadm.h>
|
|
|
|
#define SCM_NR_PARTS 8
|
|
#define SCM_QUEUE_DELAY 5
|
|
|
|
struct scm_blk_dev {
|
|
struct tasklet_struct tasklet;
|
|
struct request_queue *rq;
|
|
struct gendisk *gendisk;
|
|
struct scm_device *scmdev;
|
|
spinlock_t rq_lock; /* guard the request queue */
|
|
spinlock_t lock; /* guard the rest of the blockdev */
|
|
atomic_t queued_reqs;
|
|
enum {SCM_OPER, SCM_WR_PROHIBIT} state;
|
|
struct list_head finished_requests;
|
|
#ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE
|
|
struct list_head cluster_list;
|
|
#endif
|
|
};
|
|
|
|
struct scm_request {
|
|
struct scm_blk_dev *bdev;
|
|
struct request *request;
|
|
struct aidaw *aidaw;
|
|
struct aob *aob;
|
|
struct list_head list;
|
|
u8 retries;
|
|
int error;
|
|
#ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE
|
|
struct {
|
|
enum {CLUSTER_NONE, CLUSTER_READ, CLUSTER_WRITE} state;
|
|
struct list_head list;
|
|
void **buf;
|
|
} cluster;
|
|
#endif
|
|
};
|
|
|
|
#define to_aobrq(rq) container_of((void *) rq, struct aob_rq_header, data)
|
|
|
|
int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *);
|
|
void scm_blk_dev_cleanup(struct scm_blk_dev *);
|
|
void scm_blk_set_available(struct scm_blk_dev *);
|
|
void scm_blk_irq(struct scm_device *, void *, int);
|
|
|
|
void scm_request_finish(struct scm_request *);
|
|
void scm_request_requeue(struct scm_request *);
|
|
|
|
int scm_drv_init(void);
|
|
void scm_drv_cleanup(void);
|
|
|
|
#ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE
|
|
void __scm_free_rq_cluster(struct scm_request *);
|
|
int __scm_alloc_rq_cluster(struct scm_request *);
|
|
void scm_request_cluster_init(struct scm_request *);
|
|
bool scm_reserve_cluster(struct scm_request *);
|
|
void scm_release_cluster(struct scm_request *);
|
|
void scm_blk_dev_cluster_setup(struct scm_blk_dev *);
|
|
bool scm_need_cluster_request(struct scm_request *);
|
|
void scm_initiate_cluster_request(struct scm_request *);
|
|
void scm_cluster_request_irq(struct scm_request *);
|
|
bool scm_test_cluster_request(struct scm_request *);
|
|
bool scm_cluster_size_valid(void);
|
|
#else /* CONFIG_SCM_BLOCK_CLUSTER_WRITE */
|
|
static inline void __scm_free_rq_cluster(struct scm_request *scmrq) {}
|
|
static inline int __scm_alloc_rq_cluster(struct scm_request *scmrq)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void scm_request_cluster_init(struct scm_request *scmrq) {}
|
|
static inline bool scm_reserve_cluster(struct scm_request *scmrq)
|
|
{
|
|
return true;
|
|
}
|
|
static inline void scm_release_cluster(struct scm_request *scmrq) {}
|
|
static inline void scm_blk_dev_cluster_setup(struct scm_blk_dev *bdev) {}
|
|
static inline bool scm_need_cluster_request(struct scm_request *scmrq)
|
|
{
|
|
return false;
|
|
}
|
|
static inline void scm_initiate_cluster_request(struct scm_request *scmrq) {}
|
|
static inline void scm_cluster_request_irq(struct scm_request *scmrq) {}
|
|
static inline bool scm_test_cluster_request(struct scm_request *scmrq)
|
|
{
|
|
return false;
|
|
}
|
|
static inline bool scm_cluster_size_valid(void)
|
|
{
|
|
return true;
|
|
}
|
|
#endif /* CONFIG_SCM_BLOCK_CLUSTER_WRITE */
|
|
|
|
extern debug_info_t *scm_debug;
|
|
|
|
#define SCM_LOG(imp, txt) do { \
|
|
debug_text_event(scm_debug, imp, txt); \
|
|
} while (0)
|
|
|
|
static inline void SCM_LOG_HEX(int level, void *data, int length)
|
|
{
|
|
if (!debug_level_enabled(scm_debug, level))
|
|
return;
|
|
while (length > 0) {
|
|
debug_event(scm_debug, level, data, length);
|
|
length -= scm_debug->buf_size;
|
|
data += scm_debug->buf_size;
|
|
}
|
|
}
|
|
|
|
static inline void SCM_LOG_STATE(int level, struct scm_device *scmdev)
|
|
{
|
|
struct {
|
|
u64 address;
|
|
u8 oper_state;
|
|
u8 rank;
|
|
} __packed data = {
|
|
.address = scmdev->address,
|
|
.oper_state = scmdev->attrs.oper_state,
|
|
.rank = scmdev->attrs.rank,
|
|
};
|
|
|
|
SCM_LOG_HEX(level, &data, sizeof(data));
|
|
}
|
|
|
|
#endif /* SCM_BLK_H */
|