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d2fc439b SO |
1 | #ifndef _ASM_S390_EADM_H |
2 | #define _ASM_S390_EADM_H | |
3 | ||
4 | #include <linux/types.h> | |
1d1c8f78 | 5 | #include <linux/device.h> |
2a842aca | 6 | #include <linux/blkdev.h> |
d2fc439b SO |
7 | |
8 | struct arqb { | |
9 | u64 data; | |
10 | u16 fmt:4; | |
11 | u16:12; | |
12 | u16 cmd_code; | |
13 | u16:16; | |
14 | u16 msb_count; | |
15 | u32 reserved[12]; | |
16 | } __packed; | |
17 | ||
18 | #define ARQB_CMD_MOVE 1 | |
19 | ||
20 | struct arsb { | |
21 | u16 fmt:4; | |
22 | u32:28; | |
23 | u8 ef; | |
24 | u8:8; | |
25 | u8 ecbi; | |
26 | u8:8; | |
27 | u8 fvf; | |
28 | u16:16; | |
29 | u8 eqc; | |
30 | u32:32; | |
31 | u64 fail_msb; | |
32 | u64 fail_aidaw; | |
33 | u64 fail_ms; | |
34 | u64 fail_scm; | |
35 | u32 reserved[4]; | |
36 | } __packed; | |
37 | ||
4fa3c019 SO |
38 | #define EQC_WR_PROHIBIT 22 |
39 | ||
d2fc439b SO |
40 | struct msb { |
41 | u8 fmt:4; | |
42 | u8 oc:4; | |
43 | u8 flags; | |
44 | u16:12; | |
45 | u16 bs:4; | |
46 | u32 blk_count; | |
47 | u64 data_addr; | |
48 | u64 scm_addr; | |
49 | u64:64; | |
50 | } __packed; | |
51 | ||
52 | struct aidaw { | |
53 | u8 flags; | |
54 | u32 :24; | |
55 | u32 :32; | |
56 | u64 data_addr; | |
57 | } __packed; | |
58 | ||
59 | #define MSB_OC_CLEAR 0 | |
60 | #define MSB_OC_READ 1 | |
61 | #define MSB_OC_WRITE 2 | |
62 | #define MSB_OC_RELEASE 3 | |
63 | ||
64 | #define MSB_FLAG_BNM 0x80 | |
65 | #define MSB_FLAG_IDA 0x40 | |
66 | ||
67 | #define MSB_BS_4K 0 | |
68 | #define MSB_BS_1M 1 | |
69 | ||
70 | #define AOB_NR_MSB 124 | |
71 | ||
72 | struct aob { | |
73 | struct arqb request; | |
74 | struct arsb response; | |
75 | struct msb msb[AOB_NR_MSB]; | |
76 | } __packed __aligned(PAGE_SIZE); | |
77 | ||
1d1c8f78 SO |
78 | struct aob_rq_header { |
79 | struct scm_device *scmdev; | |
80 | char data[0]; | |
81 | }; | |
82 | ||
83 | struct scm_device { | |
84 | u64 address; | |
85 | u64 size; | |
86 | unsigned int nr_max_block; | |
87 | struct device dev; | |
1d1c8f78 SO |
88 | struct { |
89 | unsigned int persistence:4; | |
90 | unsigned int oper_state:4; | |
91 | unsigned int data_state:4; | |
92 | unsigned int rank:4; | |
93 | unsigned int release:1; | |
94 | unsigned int res_id:8; | |
95 | } __packed attrs; | |
96 | }; | |
97 | ||
98 | #define OP_STATE_GOOD 1 | |
99 | #define OP_STATE_TEMP_ERR 2 | |
100 | #define OP_STATE_PERM_ERR 3 | |
101 | ||
aebfa669 | 102 | enum scm_event {SCM_CHANGE, SCM_AVAIL}; |
93481c90 | 103 | |
1d1c8f78 SO |
104 | struct scm_driver { |
105 | struct device_driver drv; | |
106 | int (*probe) (struct scm_device *scmdev); | |
107 | int (*remove) (struct scm_device *scmdev); | |
93481c90 | 108 | void (*notify) (struct scm_device *scmdev, enum scm_event event); |
2a842aca CH |
109 | void (*handler) (struct scm_device *scmdev, void *data, |
110 | blk_status_t error); | |
1d1c8f78 SO |
111 | }; |
112 | ||
113 | int scm_driver_register(struct scm_driver *scmdrv); | |
114 | void scm_driver_unregister(struct scm_driver *scmdrv); | |
115 | ||
605c3698 | 116 | int eadm_start_aob(struct aob *aob); |
2a842aca | 117 | void scm_irq_handler(struct aob *aob, blk_status_t error); |
1d1c8f78 | 118 | |
d2fc439b | 119 | #endif /* _ASM_S390_EADM_H */ |