Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 560 insertions, 0 deletions

diff --git a/drivers/scsi/cxlflash/sislite.h b/drivers/scsi/cxlflash/sislite.h
new file mode 100644
index 000000000..ab315c595
--- /dev/null
+++ b/drivers/scsi/cxlflash/sislite.h
@@ -0,0 +1,560 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * 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
+ */
+
+#ifndef _SISLITE_H
+#define _SISLITE_H
+
+#include <linux/types.h>
+
+typedef u16 ctx_hndl_t;
+typedef u32 res_hndl_t;
+
+#define SIZE_4K		4096
+#define SIZE_64K	65536
+
+/*
+ * IOARCB: 64 bytes, min 16 byte alignment required, host native endianness
+ * except for SCSI CDB which remains big endian per SCSI standards.
+ */
+struct sisl_ioarcb {
+	u16 ctx_id;		/* ctx_hndl_t */
+	u16 req_flags;
+#define SISL_REQ_FLAGS_RES_HNDL       0x8000U	/* bit 0 (MSB) */
+#define SISL_REQ_FLAGS_PORT_LUN_ID    0x0000U
+
+#define SISL_REQ_FLAGS_SUP_UNDERRUN   0x4000U	/* bit 1 */
+
+#define SISL_REQ_FLAGS_TIMEOUT_SECS   0x0000U	/* bits 8,9 */
+#define SISL_REQ_FLAGS_TIMEOUT_MSECS  0x0040U
+#define SISL_REQ_FLAGS_TIMEOUT_USECS  0x0080U
+#define SISL_REQ_FLAGS_TIMEOUT_CYCLES 0x00C0U
+
+#define SISL_REQ_FLAGS_TMF_CMD        0x0004u	/* bit 13 */
+
+#define SISL_REQ_FLAGS_AFU_CMD        0x0002U	/* bit 14 */
+
+#define SISL_REQ_FLAGS_HOST_WRITE     0x0001U	/* bit 15 (LSB) */
+#define SISL_REQ_FLAGS_HOST_READ      0x0000U
+
+	union {
+		u32 res_hndl;	/* res_hndl_t */
+		u32 port_sel;	/* this is a selection mask:
+				 * 0x1 -> port#0 can be selected,
+				 * 0x2 -> port#1 can be selected.
+				 * Can be bitwise ORed.
+				 */
+	};
+	u64 lun_id;
+	u32 data_len;		/* 4K for read/write */
+	u32 ioadl_len;
+	union {
+		u64 data_ea;	/* min 16 byte aligned */
+		u64 ioadl_ea;
+	};
+	u8 msi;			/* LISN to send on RRQ write */
+#define SISL_MSI_CXL_PFAULT        0	/* reserved for CXL page faults */
+#define SISL_MSI_SYNC_ERROR        1	/* recommended for AFU sync error */
+#define SISL_MSI_RRQ_UPDATED       2	/* recommended for IO completion */
+#define SISL_MSI_ASYNC_ERROR       3	/* master only - for AFU async error */
+
+	u8 rrq;			/* 0 for a single RRQ */
+	u16 timeout;		/* in units specified by req_flags */
+	u32 rsvd1;
+	u8 cdb[16];		/* must be in big endian */
+#define SISL_AFU_CMD_SYNC		0xC0	/* AFU sync command */
+#define SISL_AFU_CMD_LUN_PROVISION	0xD0	/* AFU LUN provision command */
+#define SISL_AFU_CMD_DEBUG		0xE0	/* AFU debug command */
+
+#define SISL_AFU_LUN_PROVISION_CREATE	0x00	/* LUN provision create type */
+#define SISL_AFU_LUN_PROVISION_DELETE	0x01	/* LUN provision delete type */
+
+	union {
+		u64 reserved;			/* Reserved for IOARRIN mode */
+		struct sisl_ioasa *ioasa;	/* IOASA EA for SQ Mode */
+	};
+} __packed;
+
+struct sisl_rc {
+	u8 flags;
+#define SISL_RC_FLAGS_SENSE_VALID         0x80U
+#define SISL_RC_FLAGS_FCP_RSP_CODE_VALID  0x40U
+#define SISL_RC_FLAGS_OVERRUN             0x20U
+#define SISL_RC_FLAGS_UNDERRUN            0x10U
+
+	u8 afu_rc;
+#define SISL_AFU_RC_RHT_INVALID           0x01U	/* user error */
+#define SISL_AFU_RC_RHT_UNALIGNED         0x02U	/* should never happen */
+#define SISL_AFU_RC_RHT_OUT_OF_BOUNDS     0x03u	/* user error */
+#define SISL_AFU_RC_RHT_DMA_ERR           0x04u	/* see afu_extra
+						 * may retry if afu_retry is off
+						 * possible on master exit
+						 */
+#define SISL_AFU_RC_RHT_RW_PERM           0x05u	/* no RW perms, user error */
+#define SISL_AFU_RC_LXT_UNALIGNED         0x12U	/* should never happen */
+#define SISL_AFU_RC_LXT_OUT_OF_BOUNDS     0x13u	/* user error */
+#define SISL_AFU_RC_LXT_DMA_ERR           0x14u	/* see afu_extra
+						 * may retry if afu_retry is off
+						 * possible on master exit
+						 */
+#define SISL_AFU_RC_LXT_RW_PERM           0x15u	/* no RW perms, user error */
+
+#define SISL_AFU_RC_NOT_XLATE_HOST        0x1au	/* possible if master exited */
+
+	/* NO_CHANNELS means the FC ports selected by dest_port in
+	 * IOARCB or in the LXT entry are down when the AFU tried to select
+	 * a FC port. If the port went down on an active IO, it will set
+	 * fc_rc to =0x54(NOLOGI) or 0x57(LINKDOWN) instead.
+	 */
+#define SISL_AFU_RC_NO_CHANNELS           0x20U	/* see afu_extra, may retry */
+#define SISL_AFU_RC_CAP_VIOLATION         0x21U	/* either user error or
+						 * afu reset/master restart
+						 */
+#define SISL_AFU_RC_OUT_OF_DATA_BUFS      0x30U	/* always retry */
+#define SISL_AFU_RC_DATA_DMA_ERR          0x31U	/* see afu_extra
+						 * may retry if afu_retry is off
+						 */
+
+	u8 scsi_rc;		/* SCSI status byte, retry as appropriate */
+#define SISL_SCSI_RC_CHECK                0x02U
+#define SISL_SCSI_RC_BUSY                 0x08u
+
+	u8 fc_rc;		/* retry */
+	/*
+	 * We should only see fc_rc=0x57 (LINKDOWN) or 0x54(NOLOGI) for
+	 * commands that are in flight when a link goes down or is logged out.
+	 * If the link is down or logged out before AFU selects the port, either
+	 * it will choose the other port or we will get afu_rc=0x20 (no_channel)
+	 * if there is no valid port to use.
+	 *
+	 * ABORTPEND/ABORTOK/ABORTFAIL/TGTABORT can be retried, typically these
+	 * would happen if a frame is dropped and something times out.
+	 * NOLOGI or LINKDOWN can be retried if the other port is up.
+	 * RESIDERR can be retried as well.
+	 *
+	 * ABORTFAIL might indicate that lots of frames are getting CRC errors.
+	 * So it maybe retried once and reset the link if it happens again.
+	 * The link can also be reset on the CRC error threshold interrupt.
+	 */
+#define SISL_FC_RC_ABORTPEND	0x52	/* exchange timeout or abort request */
+#define SISL_FC_RC_WRABORTPEND	0x53	/* due to write XFER_RDY invalid */
+#define SISL_FC_RC_NOLOGI	0x54	/* port not logged in, in-flight cmds */
+#define SISL_FC_RC_NOEXP	0x55	/* FC protocol error or HW bug */
+#define SISL_FC_RC_INUSE	0x56	/* tag already in use, HW bug */
+#define SISL_FC_RC_LINKDOWN	0x57	/* link down, in-flight cmds */
+#define SISL_FC_RC_ABORTOK	0x58	/* pending abort completed w/success */
+#define SISL_FC_RC_ABORTFAIL	0x59	/* pending abort completed w/fail */
+#define SISL_FC_RC_RESID	0x5A	/* ioasa underrun/overrun flags set */
+#define SISL_FC_RC_RESIDERR	0x5B	/* actual data len does not match SCSI
+					 * reported len, possibly due to dropped
+					 * frames
+					 */
+#define SISL_FC_RC_TGTABORT	0x5C	/* command aborted by target */
+};
+
+#define SISL_SENSE_DATA_LEN     20	/* Sense data length         */
+#define SISL_WWID_DATA_LEN	16	/* WWID data length          */
+
+/*
+ * IOASA: 64 bytes & must follow IOARCB, min 16 byte alignment required,
+ * host native endianness
+ */
+struct sisl_ioasa {
+	union {
+		struct sisl_rc rc;
+		u32 ioasc;
+#define SISL_IOASC_GOOD_COMPLETION        0x00000000U
+	};
+
+	union {
+		u32 resid;
+		u32 lunid_hi;
+	};
+
+	u8 port;
+	u8 afu_extra;
+	/* when afu_rc=0x04, 0x14, 0x31 (_xxx_DMA_ERR):
+	 * afu_exta contains PSL response code. Useful codes are:
+	 */
+#define SISL_AFU_DMA_ERR_PAGE_IN	0x0A	/* AFU_retry_on_pagein Action
+						 *  Enabled            N/A
+						 *  Disabled           retry
+						 */
+#define SISL_AFU_DMA_ERR_INVALID_EA	0x0B	/* this is a hard error
+						 * afu_rc	Implies
+						 * 0x04, 0x14	master exit.
+						 * 0x31         user error.
+						 */
+	/* when afu rc=0x20 (no channels):
+	 * afu_extra bits [4:5]: available portmask,  [6:7]: requested portmask.
+	 */
+#define SISL_AFU_NO_CLANNELS_AMASK(afu_extra) (((afu_extra) & 0x0C) >> 2)
+#define SISL_AFU_NO_CLANNELS_RMASK(afu_extra) ((afu_extra) & 0x03)
+
+	u8 scsi_extra;
+	u8 fc_extra;
+
+	union {
+		u8 sense_data[SISL_SENSE_DATA_LEN];
+		struct {
+			u32 lunid_lo;
+			u8 wwid[SISL_WWID_DATA_LEN];
+		};
+	};
+
+	/* These fields are defined by the SISlite architecture for the
+	 * host to use as they see fit for their implementation.
+	 */
+	union {
+		u64 host_use[4];
+		u8 host_use_b[32];
+	};
+} __packed;
+
+#define SISL_RESP_HANDLE_T_BIT        0x1ULL	/* Toggle bit */
+
+/* MMIO space is required to support only 64-bit access */
+
+/*
+ * This AFU has two mechanisms to deal with endian-ness.
+ * One is a global configuration (in the afu_config) register
+ * below that specifies the endian-ness of the host.
+ * The other is a per context (i.e. application) specification
+ * controlled by the endian_ctrl field here. Since the master
+ * context is one such application the master context's
+ * endian-ness is set to be the same as the host.
+ *
+ * As per the SISlite spec, the MMIO registers are always
+ * big endian.
+ */
+#define SISL_ENDIAN_CTRL_BE           0x8000000000000080ULL
+#define SISL_ENDIAN_CTRL_LE           0x0000000000000000ULL
+
+#ifdef __BIG_ENDIAN
+#define SISL_ENDIAN_CTRL              SISL_ENDIAN_CTRL_BE
+#else
+#define SISL_ENDIAN_CTRL              SISL_ENDIAN_CTRL_LE
+#endif
+
+/* per context host transport MMIO  */
+struct sisl_host_map {
+	__be64 endian_ctrl;	/* Per context Endian Control. The AFU will
+				 * operate on whatever the context is of the
+				 * host application.
+				 */
+
+	__be64 intr_status;	/* this sends LISN# programmed in ctx_ctrl.
+				 * Only recovery in a PERM_ERR is a context
+				 * exit since there is no way to tell which
+				 * command caused the error.
+				 */
+#define SISL_ISTATUS_PERM_ERR_LISN_3_EA		0x0400ULL /* b53, user error */
+#define SISL_ISTATUS_PERM_ERR_LISN_2_EA		0x0200ULL /* b54, user error */
+#define SISL_ISTATUS_PERM_ERR_LISN_1_EA		0x0100ULL /* b55, user error */
+#define SISL_ISTATUS_PERM_ERR_LISN_3_PASID	0x0080ULL /* b56, user error */
+#define SISL_ISTATUS_PERM_ERR_LISN_2_PASID	0x0040ULL /* b57, user error */
+#define SISL_ISTATUS_PERM_ERR_LISN_1_PASID	0x0020ULL /* b58, user error */
+#define SISL_ISTATUS_PERM_ERR_CMDROOM		0x0010ULL /* b59, user error */
+#define SISL_ISTATUS_PERM_ERR_RCB_READ		0x0008ULL /* b60, user error */
+#define SISL_ISTATUS_PERM_ERR_SA_WRITE		0x0004ULL /* b61, user error */
+#define SISL_ISTATUS_PERM_ERR_RRQ_WRITE		0x0002ULL /* b62, user error */
+	/* Page in wait accessing RCB/IOASA/RRQ is reported in b63.
+	 * Same error in data/LXT/RHT access is reported via IOASA.
+	 */
+#define SISL_ISTATUS_TEMP_ERR_PAGEIN		0x0001ULL /* b63, can only be
+							   * generated when AFU
+							   * auto retry is
+							   * disabled. If user
+							   * can determine the
+							   * command that caused
+							   * the error, it can
+							   * be retried.
+							   */
+#define SISL_ISTATUS_UNMASK	(0x07FFULL)		/* 1 means unmasked */
+#define SISL_ISTATUS_MASK	~(SISL_ISTATUS_UNMASK)	/* 1 means masked */
+
+	__be64 intr_clear;
+	__be64 intr_mask;
+	__be64 ioarrin;		/* only write what cmd_room permits */
+	__be64 rrq_start;	/* start & end are both inclusive */
+	__be64 rrq_end;		/* write sequence: start followed by end */
+	__be64 cmd_room;
+	__be64 ctx_ctrl;	/* least significant byte or b56:63 is LISN# */
+#define SISL_CTX_CTRL_UNMAP_SECTOR	0x8000000000000000ULL /* b0 */
+#define SISL_CTX_CTRL_LISN_MASK		(0xFFULL)
+	__be64 mbox_w;		/* restricted use */
+	__be64 sq_start;	/* Submission Queue (R/W): write sequence and */
+	__be64 sq_end;		/* inclusion semantics are the same as RRQ    */
+	__be64 sq_head;		/* Submission Queue Head (R): for debugging   */
+	__be64 sq_tail;		/* Submission Queue TAIL (R/W): next IOARCB   */
+	__be64 sq_ctx_reset;	/* Submission Queue Context Reset (R/W)	      */
+};
+
+/* per context provisioning & control MMIO */
+struct sisl_ctrl_map {
+	__be64 rht_start;
+	__be64 rht_cnt_id;
+	/* both cnt & ctx_id args must be ULL */
+#define SISL_RHT_CNT_ID(cnt, ctx_id)  (((cnt) << 48) | ((ctx_id) << 32))
+
+	__be64 ctx_cap;	/* afu_rc below is when the capability is violated */
+#define SISL_CTX_CAP_PROXY_ISSUE       0x8000000000000000ULL /* afu_rc 0x21 */
+#define SISL_CTX_CAP_REAL_MODE         0x4000000000000000ULL /* afu_rc 0x21 */
+#define SISL_CTX_CAP_HOST_XLATE        0x2000000000000000ULL /* afu_rc 0x1a */
+#define SISL_CTX_CAP_PROXY_TARGET      0x1000000000000000ULL /* afu_rc 0x21 */
+#define SISL_CTX_CAP_AFU_CMD           0x0000000000000008ULL /* afu_rc 0x21 */
+#define SISL_CTX_CAP_GSCSI_CMD         0x0000000000000004ULL /* afu_rc 0x21 */
+#define SISL_CTX_CAP_WRITE_CMD         0x0000000000000002ULL /* afu_rc 0x21 */
+#define SISL_CTX_CAP_READ_CMD          0x0000000000000001ULL /* afu_rc 0x21 */
+	__be64 mbox_r;
+	__be64 lisn_pasid[2];
+	/* pasid _a arg must be ULL */
+#define SISL_LISN_PASID(_a, _b)	(((_a) << 32) | (_b))
+	__be64 lisn_ea[3];
+};
+
+/* single copy global regs */
+struct sisl_global_regs {
+	__be64 aintr_status;
+	/*
+	 * In cxlflash, FC port/link are arranged in port pairs, each
+	 * gets a byte of status:
+	 *
+	 *	*_OTHER:	other err, FC_ERRCAP[31:20]
+	 *	*_LOGO:		target sent FLOGI/PLOGI/LOGO while logged in
+	 *	*_CRC_T:	CRC threshold exceeded
+	 *	*_LOGI_R:	login state machine timed out and retrying
+	 *	*_LOGI_F:	login failed, FC_ERROR[19:0]
+	 *	*_LOGI_S:	login succeeded
+	 *	*_LINK_DN:	link online to offline
+	 *	*_LINK_UP:	link offline to online
+	 */
+#define SISL_ASTATUS_FC2_OTHER	 0x80000000ULL /* b32 */
+#define SISL_ASTATUS_FC2_LOGO    0x40000000ULL /* b33 */
+#define SISL_ASTATUS_FC2_CRC_T   0x20000000ULL /* b34 */
+#define SISL_ASTATUS_FC2_LOGI_R  0x10000000ULL /* b35 */
+#define SISL_ASTATUS_FC2_LOGI_F  0x08000000ULL /* b36 */
+#define SISL_ASTATUS_FC2_LOGI_S  0x04000000ULL /* b37 */
+#define SISL_ASTATUS_FC2_LINK_DN 0x02000000ULL /* b38 */
+#define SISL_ASTATUS_FC2_LINK_UP 0x01000000ULL /* b39 */
+
+#define SISL_ASTATUS_FC3_OTHER   0x00800000ULL /* b40 */
+#define SISL_ASTATUS_FC3_LOGO    0x00400000ULL /* b41 */
+#define SISL_ASTATUS_FC3_CRC_T   0x00200000ULL /* b42 */
+#define SISL_ASTATUS_FC3_LOGI_R  0x00100000ULL /* b43 */
+#define SISL_ASTATUS_FC3_LOGI_F  0x00080000ULL /* b44 */
+#define SISL_ASTATUS_FC3_LOGI_S  0x00040000ULL /* b45 */
+#define SISL_ASTATUS_FC3_LINK_DN 0x00020000ULL /* b46 */
+#define SISL_ASTATUS_FC3_LINK_UP 0x00010000ULL /* b47 */
+
+#define SISL_ASTATUS_FC0_OTHER	 0x00008000ULL /* b48 */
+#define SISL_ASTATUS_FC0_LOGO    0x00004000ULL /* b49 */
+#define SISL_ASTATUS_FC0_CRC_T   0x00002000ULL /* b50 */
+#define SISL_ASTATUS_FC0_LOGI_R  0x00001000ULL /* b51 */
+#define SISL_ASTATUS_FC0_LOGI_F  0x00000800ULL /* b52 */
+#define SISL_ASTATUS_FC0_LOGI_S  0x00000400ULL /* b53 */
+#define SISL_ASTATUS_FC0_LINK_DN 0x00000200ULL /* b54 */
+#define SISL_ASTATUS_FC0_LINK_UP 0x00000100ULL /* b55 */
+
+#define SISL_ASTATUS_FC1_OTHER   0x00000080ULL /* b56 */
+#define SISL_ASTATUS_FC1_LOGO    0x00000040ULL /* b57 */
+#define SISL_ASTATUS_FC1_CRC_T   0x00000020ULL /* b58 */
+#define SISL_ASTATUS_FC1_LOGI_R  0x00000010ULL /* b59 */
+#define SISL_ASTATUS_FC1_LOGI_F  0x00000008ULL /* b60 */
+#define SISL_ASTATUS_FC1_LOGI_S  0x00000004ULL /* b61 */
+#define SISL_ASTATUS_FC1_LINK_DN 0x00000002ULL /* b62 */
+#define SISL_ASTATUS_FC1_LINK_UP 0x00000001ULL /* b63 */
+
+#define SISL_FC_INTERNAL_UNMASK	0x0000000300000000ULL	/* 1 means unmasked */
+#define SISL_FC_INTERNAL_MASK	~(SISL_FC_INTERNAL_UNMASK)
+#define SISL_FC_INTERNAL_SHIFT	32
+
+#define SISL_FC_SHUTDOWN_NORMAL		0x0000000000000010ULL
+#define SISL_FC_SHUTDOWN_ABRUPT		0x0000000000000020ULL
+
+#define SISL_STATUS_SHUTDOWN_ACTIVE	0x0000000000000010ULL
+#define SISL_STATUS_SHUTDOWN_COMPLETE	0x0000000000000020ULL
+
+#define SISL_ASTATUS_UNMASK	0xFFFFFFFFULL		/* 1 means unmasked */
+#define SISL_ASTATUS_MASK	~(SISL_ASTATUS_UNMASK)	/* 1 means masked */
+
+	__be64 aintr_clear;
+	__be64 aintr_mask;
+	__be64 afu_ctrl;
+	__be64 afu_hb;
+	__be64 afu_scratch_pad;
+	__be64 afu_port_sel;
+#define SISL_AFUCONF_AR_IOARCB	0x4000ULL
+#define SISL_AFUCONF_AR_LXT	0x2000ULL
+#define SISL_AFUCONF_AR_RHT	0x1000ULL
+#define SISL_AFUCONF_AR_DATA	0x0800ULL
+#define SISL_AFUCONF_AR_RSRC	0x0400ULL
+#define SISL_AFUCONF_AR_IOASA	0x0200ULL
+#define SISL_AFUCONF_AR_RRQ	0x0100ULL
+/* Aggregate all Auto Retry Bits */
+#define SISL_AFUCONF_AR_ALL	(SISL_AFUCONF_AR_IOARCB|SISL_AFUCONF_AR_LXT| \
+				 SISL_AFUCONF_AR_RHT|SISL_AFUCONF_AR_DATA|   \
+				 SISL_AFUCONF_AR_RSRC|SISL_AFUCONF_AR_IOASA| \
+				 SISL_AFUCONF_AR_RRQ)
+#ifdef __BIG_ENDIAN
+#define SISL_AFUCONF_ENDIAN            0x0000ULL
+#else
+#define SISL_AFUCONF_ENDIAN            0x0020ULL
+#endif
+#define SISL_AFUCONF_MBOX_CLR_READ     0x0010ULL
+	__be64 afu_config;
+	__be64 rsvd[0xf8];
+	__le64 afu_version;
+	__be64 interface_version;
+#define SISL_INTVER_CAP_SHIFT			16
+#define SISL_INTVER_MAJ_SHIFT			8
+#define SISL_INTVER_CAP_MASK			0xFFFFFFFF00000000ULL
+#define SISL_INTVER_MAJ_MASK			0x00000000FFFF0000ULL
+#define SISL_INTVER_MIN_MASK			0x000000000000FFFFULL
+#define SISL_INTVER_CAP_IOARRIN_CMD_MODE	0x800000000000ULL
+#define SISL_INTVER_CAP_SQ_CMD_MODE		0x400000000000ULL
+#define SISL_INTVER_CAP_RESERVED_CMD_MODE_A	0x200000000000ULL
+#define SISL_INTVER_CAP_RESERVED_CMD_MODE_B	0x100000000000ULL
+#define SISL_INTVER_CAP_LUN_PROVISION		0x080000000000ULL
+#define SISL_INTVER_CAP_AFU_DEBUG		0x040000000000ULL
+#define SISL_INTVER_CAP_OCXL_LISN		0x020000000000ULL
+};
+
+#define CXLFLASH_NUM_FC_PORTS_PER_BANK	2	/* fixed # of ports per bank */
+#define CXLFLASH_MAX_FC_BANKS		2	/* max # of banks supported */
+#define CXLFLASH_MAX_FC_PORTS	(CXLFLASH_NUM_FC_PORTS_PER_BANK *	\
+				 CXLFLASH_MAX_FC_BANKS)
+#define CXLFLASH_MAX_CONTEXT	512	/* number of contexts per AFU */
+#define CXLFLASH_NUM_VLUNS	512	/* number of vluns per AFU/port */
+#define CXLFLASH_NUM_REGS	512	/* number of registers per port */
+
+struct fc_port_bank {
+	__be64 fc_port_regs[CXLFLASH_NUM_FC_PORTS_PER_BANK][CXLFLASH_NUM_REGS];
+	__be64 fc_port_luns[CXLFLASH_NUM_FC_PORTS_PER_BANK][CXLFLASH_NUM_VLUNS];
+};
+
+struct sisl_global_map {
+	union {
+		struct sisl_global_regs regs;
+		char page0[SIZE_4K];	/* page 0 */
+	};
+
+	char page1[SIZE_4K];	/* page 1 */
+
+	struct fc_port_bank bank[CXLFLASH_MAX_FC_BANKS]; /* pages 2 - 9 */
+
+	/* pages 10 - 15 are reserved */
+
+};
+
+/*
+ * CXL Flash Memory Map
+ *
+ *	+-------------------------------+
+ *	|    512 * 64 KB User MMIO      |
+ *	|        (per context)          |
+ *	|       User Accessible         |
+ *	+-------------------------------+
+ *	|    512 * 128 B per context    |
+ *	|    Provisioning and Control   |
+ *	|   Trusted Process accessible  |
+ *	+-------------------------------+
+ *	|         64 KB Global          |
+ *	|   Trusted Process accessible  |
+ *	+-------------------------------+
+ */
+struct cxlflash_afu_map {
+	union {
+		struct sisl_host_map host;
+		char harea[SIZE_64K];	/* 64KB each */
+	} hosts[CXLFLASH_MAX_CONTEXT];
+
+	union {
+		struct sisl_ctrl_map ctrl;
+		char carea[cache_line_size()];	/* 128B each */
+	} ctrls[CXLFLASH_MAX_CONTEXT];
+
+	union {
+		struct sisl_global_map global;
+		char garea[SIZE_64K];	/* 64KB single block */
+	};
+};
+
+/*
+ * LXT - LBA Translation Table
+ * LXT control blocks
+ */
+struct sisl_lxt_entry {
+	u64 rlba_base;	/* bits 0:47 is base
+			 * b48:55 is lun index
+			 * b58:59 is write & read perms
+			 * (if no perm, afu_rc=0x15)
+			 * b60:63 is port_sel mask
+			 */
+};
+
+/*
+ * RHT - Resource Handle Table
+ * Per the SISlite spec, RHT entries are to be 16-byte aligned
+ */
+struct sisl_rht_entry {
+	struct sisl_lxt_entry *lxt_start;
+	u32 lxt_cnt;
+	u16 rsvd;
+	u8 fp;			/* format & perm nibbles.
+				 * (if no perm, afu_rc=0x05)
+				 */
+	u8 nmask;
+} __packed __aligned(16);
+
+struct sisl_rht_entry_f1 {
+	u64 lun_id;
+	union {
+		struct {
+			u8 valid;
+			u8 rsvd[5];
+			u8 fp;
+			u8 port_sel;
+		};
+
+		u64 dw;
+	};
+} __packed __aligned(16);
+
+/* make the fp byte */
+#define SISL_RHT_FP(fmt, perm) (((fmt) << 4) | (perm))
+
+/* make the fp byte for a clone from a source fp and clone flags
+ * flags must be only 2 LSB bits.
+ */
+#define SISL_RHT_FP_CLONE(src_fp, cln_flags) ((src_fp) & (0xFC | (cln_flags)))
+
+#define RHT_PERM_READ  0x01U
+#define RHT_PERM_WRITE 0x02U
+#define RHT_PERM_RW    (RHT_PERM_READ | RHT_PERM_WRITE)
+
+/* extract the perm bits from a fp */
+#define SISL_RHT_PERM(fp) ((fp) & RHT_PERM_RW)
+
+#define PORT0  0x01U
+#define PORT1  0x02U
+#define PORT2  0x04U
+#define PORT3  0x08U
+#define PORT_MASK(_n)	((1 << (_n)) - 1)
+
+/* AFU Sync Mode byte */
+#define AFU_LW_SYNC 0x0U
+#define AFU_HW_SYNC 0x1U
+#define AFU_GSYNC   0x2U
+
+/* Special Task Management Function CDB */
+#define TMF_LUN_RESET  0x1U
+#define TMF_CLEAR_ACA  0x2U
+
+#endif /* _SISLITE_H */