1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_S390_EADM_H 3#define _ASM_S390_EADM_H 4 5#include <linux/types.h> 6#include <linux/device.h> 7#include <linux/blk_types.h> 8#include <asm/dma-types.h> 9 10struct arqb { 11 u64 data; 12 u16 fmt:4; 13 u16:12; 14 u16 cmd_code; 15 u16:16; 16 u16 msb_count; 17 u32 reserved[12]; 18} __packed; 19 20#define ARQB_CMD_MOVE 1 21 22struct arsb { 23 u16 fmt:4; 24 u32:28; 25 u8 ef; 26 u8:8; 27 u8 ecbi; 28 u8:8; 29 u8 fvf; 30 u16:16; 31 u8 eqc; 32 u32:32; 33 u64 fail_msb; 34 u64 fail_aidaw; 35 u64 fail_ms; 36 u64 fail_scm; 37 u32 reserved[4]; 38} __packed; 39 40#define EQC_WR_PROHIBIT 22 41 42struct msb { 43 u8 fmt:4; 44 u8 oc:4; 45 u8 flags; 46 u16:12; 47 u16 bs:4; 48 u32 blk_count; 49 dma64_t data_addr; 50 u64 scm_addr; 51 u64:64; 52} __packed; 53 54struct aidaw { 55 u8 flags; 56 u32 :24; 57 u32 :32; 58 dma64_t data_addr; 59} __packed; 60 61#define MSB_OC_CLEAR 0 62#define MSB_OC_READ 1 63#define MSB_OC_WRITE 2 64#define MSB_OC_RELEASE 3 65 66#define MSB_FLAG_BNM 0x80 67#define MSB_FLAG_IDA 0x40 68 69#define MSB_BS_4K 0 70#define MSB_BS_1M 1 71 72#define AOB_NR_MSB 124 73 74struct aob { 75 struct arqb request; 76 struct arsb response; 77 struct msb msb[AOB_NR_MSB]; 78} __packed __aligned(PAGE_SIZE); 79 80struct aob_rq_header { 81 struct scm_device *scmdev; 82 char data[]; 83}; 84 85struct scm_device { 86 u64 address; 87 u64 size; 88 unsigned int nr_max_block; 89 struct device dev; 90 struct { 91 unsigned int persistence:4; 92 unsigned int oper_state:4; 93 unsigned int data_state:4; 94 unsigned int rank:4; 95 unsigned int release:1; 96 unsigned int res_id:8; 97 } __packed attrs; 98}; 99 100#define OP_STATE_GOOD 1 101#define OP_STATE_TEMP_ERR 2 102#define OP_STATE_PERM_ERR 3 103 104enum scm_event {SCM_CHANGE, SCM_AVAIL}; 105 106struct scm_driver { 107 struct device_driver drv; 108 int (*probe) (struct scm_device *scmdev); 109 void (*remove) (struct scm_device *scmdev); 110 void (*notify) (struct scm_device *scmdev, enum scm_event event); 111 void (*handler) (struct scm_device *scmdev, void *data, 112 blk_status_t error); 113}; 114 115int scm_driver_register(struct scm_driver *scmdrv); 116void scm_driver_unregister(struct scm_driver *scmdrv); 117 118int eadm_start_aob(struct aob *aob); 119void scm_irq_handler(struct aob *aob, blk_status_t error); 120 121#endif /* _ASM_S390_EADM_H */ 122