v4.19.13 snapshot.
diff --git a/drivers/scsi/cxlflash/main.h b/drivers/scsi/cxlflash/main.h
new file mode 100644
index 0000000..a39be94
--- /dev/null
+++ b/drivers/scsi/cxlflash/main.h
@@ -0,0 +1,133 @@
+/*
+ * 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_MAIN_H
+#define _CXLFLASH_MAIN_H
+
+#include <linux/list.h>
+#include <linux/types.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_device.h>
+
+#include "backend.h"
+
+#define CXLFLASH_NAME "cxlflash"
+#define CXLFLASH_ADAPTER_NAME "IBM POWER CXL Flash Adapter"
+#define CXLFLASH_MAX_ADAPTERS 32
+
+#define PCI_DEVICE_ID_IBM_CORSA 0x04F0
+#define PCI_DEVICE_ID_IBM_FLASH_GT 0x0600
+#define PCI_DEVICE_ID_IBM_BRIARD 0x0624
+
+/* Since there is only one target, make it 0 */
+#define CXLFLASH_TARGET 0
+#define CXLFLASH_MAX_CDB_LEN 16
+
+/* Really only one target per bus since the Texan is directly attached */
+#define CXLFLASH_MAX_NUM_TARGETS_PER_BUS 1
+#define CXLFLASH_MAX_NUM_LUNS_PER_TARGET 65536
+
+#define CXLFLASH_PCI_ERROR_RECOVERY_TIMEOUT (120 * HZ)
+
+/* FC defines */
+#define FC_MTIP_CMDCONFIG 0x010
+#define FC_MTIP_STATUS 0x018
+#define FC_MAX_NUM_LUNS 0x080 /* Max LUNs host can provision for port */
+#define FC_CUR_NUM_LUNS 0x088 /* Cur number LUNs provisioned for port */
+#define FC_MAX_CAP_PORT 0x090 /* Max capacity all LUNs for port (4K blocks) */
+#define FC_CUR_CAP_PORT 0x098 /* Cur capacity all LUNs for port (4K blocks) */
+
+#define FC_PNAME 0x300
+#define FC_CONFIG 0x320
+#define FC_CONFIG2 0x328
+#define FC_STATUS 0x330
+#define FC_ERROR 0x380
+#define FC_ERRCAP 0x388
+#define FC_ERRMSK 0x390
+#define FC_CNT_CRCERR 0x538
+#define FC_CRC_THRESH 0x580
+
+#define FC_MTIP_CMDCONFIG_ONLINE 0x20ULL
+#define FC_MTIP_CMDCONFIG_OFFLINE 0x40ULL
+
+#define FC_MTIP_STATUS_MASK 0x30ULL
+#define FC_MTIP_STATUS_ONLINE 0x20ULL
+#define FC_MTIP_STATUS_OFFLINE 0x10ULL
+
+/* TIMEOUT and RETRY definitions */
+
+/* AFU command timeout values */
+#define MC_AFU_SYNC_TIMEOUT 5 /* 5 secs */
+#define MC_LUN_PROV_TIMEOUT 5 /* 5 secs */
+#define MC_AFU_DEBUG_TIMEOUT 5 /* 5 secs */
+
+/* AFU command room retry limit */
+#define MC_ROOM_RETRY_CNT 10
+
+/* FC CRC clear periodic timer */
+#define MC_CRC_THRESH 100 /* threshold in 5 mins */
+
+#define FC_PORT_STATUS_RETRY_CNT 100 /* 100 100ms retries = 10 seconds */
+#define FC_PORT_STATUS_RETRY_INTERVAL_US 100000 /* microseconds */
+
+/* VPD defines */
+#define CXLFLASH_VPD_LEN 256
+#define WWPN_LEN 16
+#define WWPN_BUF_LEN (WWPN_LEN + 1)
+
+enum undo_level {
+ UNDO_NOOP = 0,
+ FREE_IRQ,
+ UNMAP_ONE,
+ UNMAP_TWO,
+ UNMAP_THREE
+};
+
+struct dev_dependent_vals {
+ u64 max_sectors;
+ u64 flags;
+#define CXLFLASH_NOTIFY_SHUTDOWN 0x0000000000000001ULL
+#define CXLFLASH_WWPN_VPD_REQUIRED 0x0000000000000002ULL
+#define CXLFLASH_OCXL_DEV 0x0000000000000004ULL
+};
+
+static inline const struct cxlflash_backend_ops *
+cxlflash_assign_ops(struct dev_dependent_vals *ddv)
+{
+ const struct cxlflash_backend_ops *ops = NULL;
+
+#ifdef CONFIG_OCXL_BASE
+ if (ddv->flags & CXLFLASH_OCXL_DEV)
+ ops = &cxlflash_ocxl_ops;
+#endif
+
+#ifdef CONFIG_CXL_BASE
+ if (!(ddv->flags & CXLFLASH_OCXL_DEV))
+ ops = &cxlflash_cxl_ops;
+#endif
+
+ return ops;
+}
+
+struct asyc_intr_info {
+ u64 status;
+ char *desc;
+ u8 port;
+ u8 action;
+#define CLR_FC_ERROR 0x01
+#define LINK_RESET 0x02
+#define SCAN_HOST 0x04
+};
+
+#endif /* _CXLFLASH_MAIN_H */