/* 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); int (*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 */