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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef SCM_BLK_H
#define SCM_BLK_H
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.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 request_queue *rq;
struct gendisk *gendisk;
struct blk_mq_tag_set tag_set;
struct scm_device *scmdev;
spinlock_t lock;
atomic_t queued_reqs;
enum {SCM_OPER, SCM_WR_PROHIBIT} state;
struct list_head finished_requests;
};
struct scm_request {
struct scm_blk_dev *bdev;
struct aidaw *next_aidaw;
struct request **request;
struct aob *aob;
struct list_head list;
u8 retries;
blk_status_t error;
};
#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 *, blk_status_t);
struct aidaw *scm_aidaw_fetch(struct scm_request *scmrq, unsigned int bytes);
int scm_drv_init(void);
void scm_drv_cleanup(void);
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 */
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