1 /* SPDX-License-Identifier: GPL-2.0 */ 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 17 struct 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 28 struct 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 40 int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *); 41 void scm_blk_dev_cleanup(struct scm_blk_dev *); 42 void scm_blk_set_available(struct scm_blk_dev *); 43 void scm_blk_irq(struct scm_device *, void *, blk_status_t); 44 45 struct aidaw *scm_aidaw_fetch(struct scm_request *scmrq, unsigned int bytes); 46 47 int scm_drv_init(void); 48 void scm_drv_cleanup(void); 49 50 extern 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 56 static inline void SCM_LOG_HEX(int level, void *data, int length) 57 { 58 debug_event(scm_debug, level, data, length); 59 } 60 61 static 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 /* SCM_BLK_H */ 77