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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_S390_EADM_H
#define _ASM_S390_EADM_H
#include <linux/types.h>
#include <linux/device.h>
#include <linux/blk_types.h>
struct arqb {
u64 data;
u16 fmt:4;
u16:12;
u16 cmd_code;
u16:16;
u16 msb_count;
u32 reserved[12];
} __packed;
#define ARQB_CMD_MOVE 1
struct arsb {
u16 fmt:4;
u32:28;
u8 ef;
u8:8;
u8 ecbi;
u8:8;
u8 fvf;
u16:16;
u8 eqc;
u32:32;
u64 fail_msb;
u64 fail_aidaw;
u64 fail_ms;
u64 fail_scm;
u32 reserved[4];
} __packed;
#define EQC_WR_PROHIBIT 22
struct msb {
u8 fmt:4;
u8 oc:4;
u8 flags;
u16:12;
u16 bs:4;
u32 blk_count;
u64 data_addr;
u64 scm_addr;
u64:64;
} __packed;
struct aidaw {
u8 flags;
u32 :24;
u32 :32;
u64 data_addr;
} __packed;
#define MSB_OC_CLEAR 0
#define MSB_OC_READ 1
#define MSB_OC_WRITE 2
#define MSB_OC_RELEASE 3
#define MSB_FLAG_BNM 0x80
#define MSB_FLAG_IDA 0x40
#define MSB_BS_4K 0
#define MSB_BS_1M 1
#define AOB_NR_MSB 124
struct aob {
struct arqb request;
struct arsb response;
struct msb msb[AOB_NR_MSB];
} __packed __aligned(PAGE_SIZE);
struct aob_rq_header {
struct scm_device *scmdev;
char data[0];
};
struct scm_device {
u64 address;
u64 size;
unsigned int nr_max_block;
struct device dev;
struct {
unsigned int persistence:4;
unsigned int oper_state:4;
unsigned int data_state:4;
unsigned int rank:4;
unsigned int release:1;
unsigned int res_id:8;
} __packed attrs;
};
#define OP_STATE_GOOD 1
#define OP_STATE_TEMP_ERR 2
#define OP_STATE_PERM_ERR 3
enum scm_event {SCM_CHANGE, SCM_AVAIL};
struct scm_driver {
struct device_driver drv;
int (*probe) (struct scm_device *scmdev);
void (*remove) (struct scm_device *scmdev);
void (*notify) (struct scm_device *scmdev, enum scm_event event);
void (*handler) (struct scm_device *scmdev, void *data,
blk_status_t error);
};
int scm_driver_register(struct scm_driver *scmdrv);
void scm_driver_unregister(struct scm_driver *scmdrv);
int eadm_start_aob(struct aob *aob);
void scm_irq_handler(struct aob *aob, blk_status_t error);
#endif /* _ASM_S390_EADM_H */