path: root/drivers/net/ethernet/emulex/benet/be_cmds.h

/*
 * Copyright (C) 2005 - 2011 Emulex
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.  The full GNU General
 * Public License is included in this distribution in the file called COPYING.
 *
 * Contact Information:
 * linux-drivers@emulex.com
 *
 * Emulex
 * 3333 Susan Street
 * Costa Mesa, CA 92626
 */

/*
 * The driver sends configuration and managements command requests to the
 * firmware in the BE. These requests are communicated to the processor
 * using Work Request Blocks (WRBs) submitted to the MCC-WRB ring or via one
 * WRB inside a MAILBOX.
 * The commands are serviced by the ARM processor in the BladeEngine's MPU.
 */

struct be_sge {
	u32 pa_lo;
	u32 pa_hi;
	u32 len;
};

#define MCC_WRB_EMBEDDED_MASK	1 	/* bit 0 of dword 0*/
#define MCC_WRB_SGE_CNT_SHIFT	3	/* bits 3 - 7 of dword 0 */
#define MCC_WRB_SGE_CNT_MASK	0x1F	/* bits 3 - 7 of dword 0 */
struct be_mcc_wrb {
	u32 embedded;		/* dword 0 */
	u32 payload_length;	/* dword 1 */
	u32 tag0;		/* dword 2 */
	u32 tag1;		/* dword 3 */
	u32 rsvd;		/* dword 4 */
	union {
		u8 embedded_payload[236]; /* used by embedded cmds */
		struct be_sge sgl[19];    /* used by non-embedded cmds */
	} paylo