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 struct msb { 38 u8 fmt:4; 39 u8 oc:4; 40 u8 flags; 41 u16:12; 42 u16 bs:4; 43 u32 blk_count; 44 u64 data_addr; 45 u64 scm_addr; 46 u64:64; 47 } __packed; 48 49 struct aidaw { 50 u8 flags; 51 u32 :24; 52 u32 :32; 53 u64 data_addr; 54 } __packed; 55 56 #define MSB_OC_CLEAR 0 57 #define MSB_OC_READ 1 58 #define MSB_OC_WRITE 2 59 #define MSB_OC_RELEASE 3 60 61 #define MSB_FLAG_BNM 0x80 62 #define MSB_FLAG_IDA 0x40 63 64 #define MSB_BS_4K 0 65 #define MSB_BS_1M 1 66 67 #define AOB_NR_MSB 124 68 69 struct aob { 70 struct arqb request; 71 struct arsb response; 72 struct msb msb[AOB_NR_MSB]; 73 } __packed __aligned(PAGE_SIZE); 74 75 struct aob_rq_header { 76 struct scm_device *scmdev; 77 char data[0]; 78 }; 79 80 struct scm_device { 81 u64 address; 82 u64 size; 83 unsigned int nr_max_block; 84 struct device dev; 85 struct { 86 unsigned int persistence:4; 87 unsigned int oper_state:4; 88 unsigned int data_state:4; 89 unsigned int rank:4; 90 unsigned int release:1; 91 unsigned int res_id:8; 92 } __packed attrs; 93 }; 94 95 #define OP_STATE_GOOD 1 96 #define OP_STATE_TEMP_ERR 2 97 #define OP_STATE_PERM_ERR 3 98 99 struct scm_driver { 100 struct device_driver drv; 101 int (*probe) (struct scm_device *scmdev); 102 int (*remove) (struct scm_device *scmdev); 103 void (*notify) (struct scm_device *scmdev); 104 void (*handler) (struct scm_device *scmdev, void *data, int error); 105 }; 106 107 int scm_driver_register(struct scm_driver *scmdrv); 108 void scm_driver_unregister(struct scm_driver *scmdrv); 109 110 int scm_start_aob(struct aob *aob); 111 void scm_irq_handler(struct aob *aob, int error); 112 113 struct eadm_ops { 114 int (*eadm_start) (struct aob *aob); 115 struct module *owner; 116 }; 117 118 int scm_get_ref(void); 119 void scm_put_ref(void); 120 121 void register_eadm_ops(struct eadm_ops *ops); 122 void unregister_eadm_ops(struct eadm_ops *ops); 123 124 #endif /* _ASM_S390_EADM_H */ 125