diff --git a/drivers/fc4/socal.h b/drivers/fc4/socal.h
new file mode 100644
index 0000000..774edf6
--- /dev/null
+++ b/drivers/fc4/socal.h
@@ -0,0 +1,314 @@
+/* socal.h: Definitions for Sparc SUNW,socal (SOC+) Fibre Channel Sbus driver.
+ *
+ * Copyright (C) 1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+#ifndef __SOCAL_H
+#define __SOCAL_H
+
+#include "fc.h"
+#include "fcp.h"
+#include "fcp_impl.h"
+
+/* Hardware register offsets and constants first {{{ */
+#define CFG	0x00UL
+#define SAE	0x04UL
+#define CMD	0x08UL
+#define IMASK	0x0cUL
+#define REQP	0x10UL
+#define RESP	0x14UL
+
+/* Config Register */
+#define SOCAL_CFG_EXT_RAM_BANK_MASK	0x07000000
+#define SOCAL_CFG_EEPROM_BANK_MASK	0x00030000
+#define SOCAL_CFG_BURST64_MASK		0x00000700
+#define SOCAL_CFG_SBUS_PARITY_TEST	0x00000020
+#define SOCAL_CFG_SBUS_PARITY_CHECK	0x00000010
+#define SOCAL_CFG_SBUS_ENHANCED		0x00000008
+#define SOCAL_CFG_BURST_MASK		0x00000007
+/* Bursts */
+#define SOCAL_CFG_BURST_4		0x00000000
+#define SOCAL_CFG_BURST_8		0x00000003
+#define SOCAL_CFG_BURST_16		0x00000004
+#define SOCAL_CFG_BURST_32		0x00000005
+#define SOCAL_CFG_BURST_64		0x00000006
+#define SOCAL_CFG_BURST_128		0x00000007
+
+/* Slave Access Error Register */
+#define SOCAL_SAE_ALIGNMENT		0x00000004
+#define SOCAL_SAE_UNSUPPORTED		0x00000002
+#define SOCAL_SAE_PARITY		0x00000001
+
+/* Command & Status Register */
+#define SOCAL_CMD_RSP_QALL		0x000f0000
+#define SOCAL_CMD_RSP_Q0		0x00010000
+#define SOCAL_CMD_RSP_Q1		0x00020000
+#define SOCAL_CMD_RSP_Q2		0x00040000
+#define SOCAL_CMD_RSP_Q3		0x00080000
+#define SOCAL_CMD_REQ_QALL		0x00000f00
+#define SOCAL_CMD_REQ_Q0		0x00000100
+#define SOCAL_CMD_REQ_Q1		0x00000200
+#define SOCAL_CMD_REQ_Q2		0x00000400
+#define SOCAL_CMD_REQ_Q3		0x00000800
+#define SOCAL_CMD_SAE			0x00000080
+#define SOCAL_CMD_INTR_PENDING		0x00000008
+#define SOCAL_CMD_NON_QUEUED		0x00000004
+#define SOCAL_CMD_IDLE			0x00000002
+#define SOCAL_CMD_SOFT_RESET		0x00000001
+
+/* Interrupt Mask Register */
+#define SOCAL_IMASK_RSP_QALL		0x000f0000
+#define SOCAL_IMASK_RSP_Q0		0x00010000
+#define SOCAL_IMASK_RSP_Q1		0x00020000
+#define SOCAL_IMASK_RSP_Q2		0x00040000
+#define SOCAL_IMASK_RSP_Q3		0x00080000
+#define SOCAL_IMASK_REQ_QALL		0x00000f00
+#define SOCAL_IMASK_REQ_Q0		0x00000100
+#define SOCAL_IMASK_REQ_Q1		0x00000200
+#define SOCAL_IMASK_REQ_Q2		0x00000400
+#define SOCAL_IMASK_REQ_Q3		0x00000800
+#define SOCAL_IMASK_SAE			0x00000080
+#define SOCAL_IMASK_NON_QUEUED		0x00000004
+
+#define SOCAL_INTR(s, cmd) \
+	(((cmd & SOCAL_CMD_RSP_QALL) | ((~cmd) & SOCAL_CMD_REQ_QALL)) \
+	 & s->imask)
+	 
+#define SOCAL_SETIMASK(s, i) \
+do {	(s)->imask = (i); \
+	sbus_writel((i), (s)->regs + IMASK); \
+} while (0)
+	
+#define SOCAL_MAX_EXCHANGES		1024
+
+/* XRAM
+ *
+ * This is a 64KB register area.
+ * From the documentation, it seems like it is finally able to cope
+ * at least with 1,2,4 byte accesses for read and 2,4 byte accesses for write.
+ */
+ 
+/* Circular Queue */
+
+#define SOCAL_CQ_REQ_OFFSET	0x200
+#define SOCAL_CQ_RSP_OFFSET	0x220
+
+typedef struct {
+	u32			address;
+	u8			in;
+	u8			out;
+	u8			last;
+	u8			seqno;
+} socal_hw_cq;
+
+#define SOCAL_PORT_A	0x0000	/* From/To Port A */
+#define SOCAL_PORT_B	0x0001	/* From/To Port A */
+#define SOCAL_FC_HDR	0x0002  /* Contains FC Header */
+#define SOCAL_NORSP	0x0004  /* Don't generate response nor interrupt */
+#define SOCAL_NOINT	0x0008  /* Generate response but not interrupt */
+#define SOCAL_XFERRDY	0x0010  /* Generate XFERRDY */
+#define SOCAL_IGNOREPARAM 0x0020 /* Ignore PARAM field in the FC header */
+#define SOCAL_COMPLETE	0x0040  /* Command completed */
+#define SOCAL_UNSOLICITED 0x0080 /* For request this is the packet to establish unsolicited pools, */
+				/* for rsp this is unsolicited packet */
+#define SOCAL_STATUS	0x0100	/* State change (on/off line) */
+#define SOCAL_RSP_HDR	0x0200	/* Return frame header in any case */
+
+typedef struct {
+	u32			token;
+	u16			flags;
+	u8			class;
+	u8			segcnt;
+	u32			bytecnt;
+} socal_hdr;
+
+typedef struct {
+	u32			base;
+	u32			count;
+} socal_data;
+
+#define SOCAL_CQTYPE_NOP	0x00
+#define SOCAL_CQTYPE_OUTBOUND	0x01
+#define SOCAL_CQTYPE_INBOUND	0x02
+#define SOCAL_CQTYPE_SIMPLE	0x03
+#define SOCAL_CQTYPE_IO_WRITE	0x04
+#define SOCAL_CQTYPE_IO_READ	0x05
+#define SOCAL_CQTYPE_UNSOLICITED 0x06
+#define SOCAL_CQTYPE_BYPASS_DEV	0x06
+#define SOCAL_CQTYPE_DIAG	0x07
+#define SOCAL_CQTYPE_OFFLINE	0x08
+#define SOCAL_CQTYPE_ADD_POOL	0x09
+#define SOCAL_CQTYPE_DELETE_POOL 0x0a
+#define SOCAL_CQTYPE_ADD_BUFFER	0x0b
+#define SOCAL_CQTYPE_ADD_POOL_BUFFER 0x0c
+#define SOCAL_CQTYPE_REQUEST_ABORT 0x0d
+#define SOCAL_CQTYPE_REQUEST_LIP 0x0e
+#define SOCAL_CQTYPE_REPORT_MAP	0x0f
+#define SOCAL_CQTYPE_RESPONSE	0x10
+#define SOCAL_CQTYPE_INLINE	0x20
+
+#define SOCAL_CQFLAGS_CONT	0x01
+#define SOCAL_CQFLAGS_FULL	0x02
+#define SOCAL_CQFLAGS_BADHDR	0x04
+#define SOCAL_CQFLAGS_BADPKT	0x08
+
+typedef struct {
+	socal_hdr		shdr;
+	socal_data		data[3];
+	fc_hdr			fchdr;
+	u8			count;
+	u8			type;
+	u8			flags;
+	u8			seqno;
+} socal_req;
+
+#define SOCAL_OK		0
+#define SOCAL_P_RJT		2
+#define SOCAL_F_RJT		3
+#define SOCAL_P_BSY		4
+#define SOCAL_F_BSY		5
+#define SOCAL_ONLINE		0x10
+#define SOCAL_OFFLINE		0x11
+#define SOCAL_TIMEOUT		0x12
+#define SOCAL_OVERRUN		0x13
+#define SOCAL_ONLINE_LOOP	0x14
+#define SOCAL_OLD_PORT		0x15
+#define SOCAL_AL_PORT		0x16
+#define SOCAL_UNKOWN_CQ_TYPE	0x20
+#define SOCAL_BAD_SEG_CNT	0x21
+#define SOCAL_MAX_XCHG_EXCEEDED	0x22
+#define SOCAL_BAD_XID		0x23
+#define SOCAL_XCHG_BUSY		0x24
+#define SOCAL_BAD_POOL_ID	0x25
+#define SOCAL_INSUFFICIENT_CQES	0x26
+#define SOCAL_ALLOC_FAIL	0x27
+#define SOCAL_BAD_SID		0x28
+#define SOCAL_NO_SEG_INIT	0x29
+#define SOCAL_BAD_DID		0x2a
+#define SOCAL_ABORTED		0x30
+#define SOCAL_ABORT_FAILED	0x31
+
+typedef struct {
+	socal_hdr		shdr;
+	u32			status;
+	socal_data		data;
+	u8			xxx1[10];
+	u16			ncmds;
+	fc_hdr			fchdr;
+	u8			count;
+	u8			type;
+	u8			flags;
+	u8			seqno;
+} socal_rsp;
+
+typedef struct {
+	socal_hdr		shdr;
+	u8			xxx1[48];
+	u8			count;
+	u8			type;
+	u8			flags;
+	u8			seqno;
+} socal_cmdonly;
+
+#define SOCAL_DIAG_NOP		0x00
+#define SOCAL_DIAG_INT_LOOP	0x01
+#define SOCAL_DIAG_EXT_LOOP	0x02
+#define SOCAL_DIAG_REM_LOOP	0x03
+#define SOCAL_DIAG_XRAM_TEST	0x04
+#define SOCAL_DIAG_SOC_TEST	0x05
+#define SOCAL_DIAG_HCB_TEST	0x06
+#define SOCAL_DIAG_SOCLB_TEST	0x07
+#define SOCAL_DIAG_SRDSLB_TEST	0x08
+#define SOCAL_DIAG_EXTOE_TEST	0x09
+
+typedef struct {
+	socal_hdr		shdr;
+	u32			cmd;
+	u8			xxx1[44];
+	u8			count;
+	u8			type;
+	u8			flags;
+	u8			seqno;
+} socal_diag_req;
+
+#define SOCAL_POOL_MASK_RCTL	0x800000
+#define SOCAL_POOL_MASK_DID	0x700000
+#define SOCAL_POOL_MASK_SID	0x070000
+#define SOCAL_POOL_MASK_TYPE	0x008000
+#define SOCAL_POOL_MASK_F_CTL	0x007000
+#define SOCAL_POOL_MASK_SEQ_ID	0x000800
+#define SOCAL_POOL_MASK_D_CTL	0x000400
+#define SOCAL_POOL_MASK_SEQ_CNT	0x000300
+#define SOCAL_POOL_MASK_OX_ID	0x0000f0
+#define SOCAL_POOL_MASK_PARAM	0x00000f
+
+typedef struct {
+	socal_hdr		shdr;
+	u32			pool_id;
+	u32			header_mask;
+	u32			buf_size;
+	u32			entries;
+	u8			xxx1[8];
+	fc_hdr			fchdr;
+	u8			count;
+	u8			type;
+	u8			flags;
+	u8			seqno;
+} socal_pool_req;
+
+/* }}} */
+
+/* Now our software structures and constants we use to drive the beast {{{ */
+
+#define SOCAL_CQ_REQ0_SIZE	4
+#define SOCAL_CQ_REQ1_SIZE	256
+#define SOCAL_CQ_RSP0_SIZE	8
+#define SOCAL_CQ_RSP1_SIZE	4
+#define SOCAL_CQ_RSP2_SIZE	4
+
+#define SOCAL_SOLICITED_RSP_Q	0
+#define SOCAL_SOLICITED_BAD_RSP_Q 1
+#define SOCAL_UNSOLICITED_RSP_Q	2
+
+struct socal;
+
+typedef struct {
+	/* This must come first */
+	fc_channel		fc;
+	struct socal		*s;
+	u16			flags;
+	u16			mask;
+} socal_port; 
+
+typedef struct {
+	socal_hw_cq		__iomem *hw_cq;	/* Related XRAM cq */
+	socal_req		*pool;
+	u8			in;
+	u8			out;
+	u8			last;
+	u8			seqno;
+} socal_cq;
+
+struct socal {
+	spinlock_t		lock;
+	socal_port		port[2]; /* Every SOCAL has one or two FC ports */
+	socal_cq		req[4]; /* Request CQs */
+	socal_cq		rsp[4]; /* Response CQs */
+	int			socal_no;
+	void __iomem		*regs;
+	void __iomem		*xram;
+	void __iomem		*eeprom;
+	fc_wwn			wwn;
+	u32			imask;	/* Our copy of regs->imask */
+	u32			cfg;	/* Our copy of regs->cfg */
+	char			serv_params[80];
+	struct socal		*next;
+	int			curr_port; /* Which port will have priority to fcp_queue_empty */
+
+	socal_req *		req_cpu;
+	u32			req_dvma;
+};
+
+/* }}} */
+
+#endif /* !(__SOCAL_H) */