1#ifndef _ASM_S390_EADM_H
2#define _ASM_S390_EADM_H
3
4#include <linux/types.h>
5#include <linux/device.h>
6
7struct 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
19struct 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
39struct 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
51struct 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
71struct aob {
72	struct arqb request;
73	struct arsb response;
74	struct msb msb[AOB_NR_MSB];
75} __packed __aligned(PAGE_SIZE);
76
77struct aob_rq_header {
78	struct scm_device *scmdev;
79	char data[0];
80};
81
82struct 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
101enum scm_event {SCM_CHANGE, SCM_AVAIL};
102
103struct 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
111int scm_driver_register(struct scm_driver *scmdrv);
112void scm_driver_unregister(struct scm_driver *scmdrv);
113
114int eadm_start_aob(struct aob *aob);
115void scm_irq_handler(struct aob *aob, int error);
116
117#endif /* _ASM_S390_EADM_H */
118