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File manager - Edit - /usr/include/scsi/cxlflash_ioctl.h

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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note / / * CXL Flash Device Driver * * Written by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>, IBM Corporation * Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation * * Copyright (C) 2015 IBM Corporation * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. / #ifndef _CXLFLASH_IOCTL_H #define _CXLFLASH_IOCTL_H #include <linux/types.h> / * Structure and definitions for all CXL Flash ioctls / #define CXLFLASH_WWID_LEN 16 / * Structure and flag definitions CXL Flash superpipe ioctls / #define DK_CXLFLASH_VERSION_0 0 struct dk_cxlflash_hdr { __u16 version; / Version data / __u16 rsvd[3]; / Reserved for future use / __u64 flags; / Input flags / __u64 return_flags; / Returned flags / }; / * Return flag definitions available to all superpipe ioctls * * Similar to the input flags, these are grown from the bottom-up with the * intention that ioctl-specific return flag definitions would grow from the * top-down, allowing the two sets to co-exist. While not required/enforced * at this time, this provides future flexibility. / #define DK_CXLFLASH_ALL_PORTS_ACTIVE 0x0000000000000001ULL #define DK_CXLFLASH_APP_CLOSE_ADAP_FD 0x0000000000000002ULL #define DK_CXLFLASH_CONTEXT_SQ_CMD_MODE 0x0000000000000004ULL / * General Notes: * ------------- * The 'context_id' field of all ioctl structures contains the context * identifier for a context in the lower 32-bits (upper 32-bits are not * to be used when identifying a context to the AFU). That said, the value * in its entirety (all 64-bits) is to be treated as an opaque cookie and * should be presented as such when issuing ioctls. / / * DK_CXLFLASH_ATTACH Notes: * ------------------------ * Read/write access permissions are specified via the O_RDONLY, O_WRONLY, * and O_RDWR flags defined in the fcntl.h header file. * * A valid adapter file descriptor (fd >= 0) is only returned on the initial * attach (successful) of a context. When a context is shared(reused), the user * is expected to already 'know' the adapter file descriptor associated with the * context. / #define DK_CXLFLASH_ATTACH_REUSE_CONTEXT 0x8000000000000000ULL struct dk_cxlflash_attach { struct dk_cxlflash_hdr hdr; / Common fields / __u64 num_interrupts; / Requested number of interrupts / __u64 context_id; / Returned context / __u64 mmio_size; / Returned size of MMIO area / __u64 block_size; / Returned block size, in bytes / __u64 adap_fd; / Returned adapter file descriptor / __u64 last_lba; / Returned last LBA on the device / __u64 max_xfer; / Returned max transfer size, blocks / __u64 reserved[8]; / Reserved for future use / }; struct dk_cxlflash_detach { struct dk_cxlflash_hdr hdr; / Common fields / __u64 context_id; / Context to detach / __u64 reserved[8]; / Reserved for future use / }; struct dk_cxlflash_udirect { struct dk_cxlflash_hdr hdr; / Common fields / __u64 context_id; / Context to own physical resources / __u64 rsrc_handle; / Returned resource handle / __u64 last_lba; / Returned last LBA on the device / __u64 reserved[8]; / Reserved for future use / }; #define DK_CXLFLASH_UVIRTUAL_NEED_WRITE_SAME 0x8000000000000000ULL struct dk_cxlflash_uvirtual { struct dk_cxlflash_hdr hdr; / Common fields / __u64 context_id; / Context to own virtual resources / __u64 lun_size; / Requested size, in 4K blocks / __u64 rsrc_handle; / Returned resource handle / __u64 last_lba; / Returned last LBA of LUN / __u64 reserved[8]; / Reserved for future use / }; struct dk_cxlflash_release { struct dk_cxlflash_hdr hdr; / Common fields / __u64 context_id; / Context owning resources / __u64 rsrc_handle; / Resource handle to release / __u64 reserved[8]; / Reserved for future use / }; struct dk_cxlflash_resize { struct dk_cxlflash_hdr hdr; / Common fields / __u64 context_id; / Context owning resources / __u64 rsrc_handle; / Resource handle of LUN to resize / __u64 req_size; / New requested size, in 4K blocks / __u64 last_lba; / Returned last LBA of LUN / __u64 reserved[8]; / Reserved for future use / }; struct dk_cxlflash_clone { struct dk_cxlflash_hdr hdr; / Common fields / __u64 context_id_src; / Context to clone from / __u64 context_id_dst; / Context to clone to / __u64 adap_fd_src; / Source context adapter fd / __u64 reserved[8]; / Reserved for future use / }; #define DK_CXLFLASH_VERIFY_SENSE_LEN 18 #define DK_CXLFLASH_VERIFY_HINT_SENSE 0x8000000000000000ULL struct dk_cxlflash_verify { struct dk_cxlflash_hdr hdr; / Common fields / __u64 context_id; / Context owning resources to verify / __u64 rsrc_handle; / Resource handle of LUN / __u64 hint; / Reasons for verify / __u64 last_lba; / Returned last LBA of device / __u8 sense_data[DK_CXLFLASH_VERIFY_SENSE_LEN]; / SCSI sense data / __u8 pad[6]; / Pad to next 8-byte boundary / __u64 reserved[8]; / Reserved for future use / }; #define DK_CXLFLASH_RECOVER_AFU_CONTEXT_RESET 0x8000000000000000ULL struct dk_cxlflash_recover_afu { struct dk_cxlflash_hdr hdr; / Common fields / __u64 reason; / Reason for recovery request / __u64 context_id; / Context to recover / updated ID / __u64 mmio_size; / Returned size of MMIO area / __u64 adap_fd; / Returned adapter file descriptor / __u64 reserved[8]; / Reserved for future use / }; #define DK_CXLFLASH_MANAGE_LUN_WWID_LEN CXLFLASH_WWID_LEN #define DK_CXLFLASH_MANAGE_LUN_ENABLE_SUPERPIPE 0x8000000000000000ULL #define DK_CXLFLASH_MANAGE_LUN_DISABLE_SUPERPIPE 0x4000000000000000ULL #define DK_CXLFLASH_MANAGE_LUN_ALL_PORTS_ACCESSIBLE 0x2000000000000000ULL struct dk_cxlflash_manage_lun { struct dk_cxlflash_hdr hdr; / Common fields / __u8 wwid[DK_CXLFLASH_MANAGE_LUN_WWID_LEN]; / Page83 WWID, NAA-6 / __u64 reserved[8]; / Rsvd, future use / }; union cxlflash_ioctls { struct dk_cxlflash_attach attach; struct dk_cxlflash_detach detach; struct dk_cxlflash_udirect udirect; struct dk_cxlflash_uvirtual uvirtual; struct dk_cxlflash_release release; struct dk_cxlflash_resize resize; struct dk_cxlflash_clone clone; struct dk_cxlflash_verify verify; struct dk_cxlflash_recover_afu recover_afu; struct dk_cxlflash_manage_lun manage_lun; }; #define MAX_CXLFLASH_IOCTL_SZ (sizeof(union cxlflash_ioctls)) #define CXL_MAGIC 0xCA #define CXL_IOWR(_n, _s) _IOWR(CXL_MAGIC, _n, struct _s) / * CXL Flash superpipe ioctls start at base of the reserved CXL_MAGIC * region (0x80) and grow upwards. / #define DK_CXLFLASH_ATTACH CXL_IOWR(0x80, dk_cxlflash_attach) #define DK_CXLFLASH_USER_DIRECT CXL_IOWR(0x81, dk_cxlflash_udirect) #define DK_CXLFLASH_RELEASE CXL_IOWR(0x82, dk_cxlflash_release) #define DK_CXLFLASH_DETACH CXL_IOWR(0x83, dk_cxlflash_detach) #define DK_CXLFLASH_VERIFY CXL_IOWR(0x84, dk_cxlflash_verify) #define DK_CXLFLASH_RECOVER_AFU CXL_IOWR(0x85, dk_cxlflash_recover_afu) #define DK_CXLFLASH_MANAGE_LUN CXL_IOWR(0x86, dk_cxlflash_manage_lun) #define DK_CXLFLASH_USER_VIRTUAL CXL_IOWR(0x87, dk_cxlflash_uvirtual) #define DK_CXLFLASH_VLUN_RESIZE CXL_IOWR(0x88, dk_cxlflash_resize) #define DK_CXLFLASH_VLUN_CLONE CXL_IOWR(0x89, dk_cxlflash_clone) / * Structure and flag definitions CXL Flash host ioctls / #define HT_CXLFLASH_VERSION_0 0 struct ht_cxlflash_hdr { __u16 version; / Version data / __u16 subcmd; / Sub-command / __u16 rsvd[2]; / Reserved for future use / __u64 flags; / Input flags / __u64 return_flags; / Returned flags / }; / * Input flag definitions available to all host ioctls * * These are grown from the bottom-up with the intention that ioctl-specific * input flag definitions would grow from the top-down, allowing the two sets * to co-exist. While not required/enforced at this time, this provides future * flexibility. / #define HT_CXLFLASH_HOST_READ 0x0000000000000000ULL #define HT_CXLFLASH_HOST_WRITE 0x0000000000000001ULL #define HT_CXLFLASH_LUN_PROVISION_SUBCMD_CREATE_LUN 0x0001 #define HT_CXLFLASH_LUN_PROVISION_SUBCMD_DELETE_LUN 0x0002 #define HT_CXLFLASH_LUN_PROVISION_SUBCMD_QUERY_PORT 0x0003 struct ht_cxlflash_lun_provision { struct ht_cxlflash_hdr hdr; / Common fields / __u16 port; / Target port for provision request / __u16 reserved16[3]; / Reserved for future use / __u64 size; / Size of LUN (4K blocks) / __u64 lun_id; / SCSI LUN ID / __u8 wwid[CXLFLASH_WWID_LEN];/ Page83 WWID, NAA-6 / __u64 max_num_luns; / Maximum number of LUNs provisioned / __u64 cur_num_luns; / Current number of LUNs provisioned / __u64 max_cap_port; / Total capacity for port (4K blocks) / __u64 cur_cap_port; / Current capacity for port (4K blocks) / __u64 reserved[8]; / Reserved for future use / }; #define HT_CXLFLASH_AFU_DEBUG_MAX_DATA_LEN 262144 / 256K / #define HT_CXLFLASH_AFU_DEBUG_SUBCMD_LEN 12 struct ht_cxlflash_afu_debug { struct ht_cxlflash_hdr hdr; / Common fields / __u8 reserved8[4]; / Reserved for future use / __u8 afu_subcmd[HT_CXLFLASH_AFU_DEBUG_SUBCMD_LEN]; / AFU subcommand, * (pass through) / __u64 data_ea; / Data buffer effective address / __u32 data_len; / Data buffer length / __u32 reserved32; / Reserved for future use / __u64 reserved[8]; / Reserved for future use / }; union cxlflash_ht_ioctls { struct ht_cxlflash_lun_provision lun_provision; struct ht_cxlflash_afu_debug afu_debug; }; #define MAX_HT_CXLFLASH_IOCTL_SZ (sizeof(union cxlflash_ht_ioctls)) / * CXL Flash host ioctls start at the top of the reserved CXL_MAGIC * region (0xBF) and grow downwards. / #define HT_CXLFLASH_LUN_PROVISION CXL_IOWR(0xBF, ht_cxlflash_lun_provision) #define HT_CXLFLASH_AFU_DEBUG CXL_IOWR(0xBE, ht_cxlflash_afu_debug) #endif / ifndef _CXLFLASH_IOCTL_H */