1 #ifndef _ASM_S390_EADM_H 2 #define _ASM_S390_EADM_H 3 4 #include <linux/types.h> 5 #include <linux/device.h> 6 7 struct arqb { 8 u64 data; 9 u16 fmt:4; 10 u16:12; 11 u16 cmd_code; 12 u16:16; 13 u16 msb_count; 14 u32 reserved[12]; 15 } __packed; 16 17 #define ARQB_CMD_MOVE 1 18 19 struct arsb { 20 u16 fmt:4; 21 u32:28; 22 u8 ef; 23 u8:8; 24 u8 ecbi; 25 u8:8; 26 u8 fvf; 27 u16:16; 28 u8 eqc; 29 u32:32; 30 u64 fail_msb; 31 u64 fail_aidaw; 32 u64 fail_ms; 33 u64 fail_scm; 34 u32 reserved[4]; 35 } __packed; 36 37 #define EQC_WR_PROHIBIT 22 38 39 struct msb { 40 u8 fmt:4; 41 u8 oc:4; 42 u8 flags; 43 u16:12; 44 u16 bs:4; 45 u32 blk_count; 46 u64 data_addr; 47 u64 scm_addr; 48 u64:64; 49 } __packed; 50 51 struct aidaw { 52 u8 flags; 53 u32 :24; 54 u32 :32; 55 u64 data_addr; 56 } __packed; 57 58 #define MSB_OC_CLEAR 0 59 #define MSB_OC_READ 1 60 #define MSB_OC_WRITE 2 61 #define MSB_OC_RELEASE 3 62 63 #define MSB_FLAG_BNM 0x80 64 #define MSB_FLAG_IDA 0x40 65 66 #define MSB_BS_4K 0 67 #define MSB_BS_1M 1 68 69 #define AOB_NR_MSB 124 70 71 struct aob { 72 struct arqb request; 73 struct arsb response; 74 struct msb msb[AOB_NR_MSB]; 75 } __packed __aligned(PAGE_SIZE); 76 77 struct aob_rq_header { 78 struct scm_device *scmdev; 79 char data[0]; 80 }; 81 82 struct scm_device { 83 u64 address; 84 u64 size; 85 unsigned int nr_max_block; 86 struct device dev; 87 struct { 88 unsigned int persistence:4; 89 unsigned int oper_state:4; 90 unsigned int data_state:4; 91 unsigned int rank:4; 92 unsigned int release:1; 93 unsigned int res_id:8; 94 } __packed attrs; 95 }; 96 97 #define OP_STATE_GOOD 1 98 #define OP_STATE_TEMP_ERR 2 99 #define OP_STATE_PERM_ERR 3 100 101 enum scm_event {SCM_CHANGE, SCM_AVAIL}; 102 103 struct scm_driver { 104 struct device_driver drv; 105 int (*probe) (struct scm_device *scmdev); 106 int (*remove) (struct scm_device *scmdev); 107 void (*notify) (struct scm_device *scmdev, enum scm_event event); 108 void (*handler) (struct scm_device *scmdev, void *data, int error); 109 }; 110 111 int scm_driver_register(struct scm_driver *scmdrv); 112 void scm_driver_unregister(struct scm_driver *scmdrv); 113 114 int eadm_start_aob(struct aob *aob); 115 void scm_irq_handler(struct aob *aob, int error); 116 117 #endif /* _ASM_S390_EADM_H */ 118