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 */