cxgb4: Add HW and FW support code

/*

 * This file is part of the Chelsio T4 Ethernet driver for Linux.

 *

 * Copyright (c) 2003-2010 Chelsio Communications, Inc. All rights reserved.

 *

 * This software is available to you under a choice of one of two

 * licenses.  You may choose to be licensed under the terms of the GNU

 * General Public License (GPL) Version 2, available from the file

 * COPYING in the main directory of this source tree, or the

 * OpenIB.org BSD license below:

 *

 *     Redistribution and use in source and binary forms, with or

 *     without modification, are permitted provided that the following

 *     conditions are met:

 *

 *      - Redistributions of source code must retain the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer.

 *

 *      - Redistributions in binary form must reproduce the above

 *        copyright notice, this list of conditions and the following

 *        disclaimer in the documentation and/or other materials

 *        provided with the distribution.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

 * SOFTWARE.

 */

#ifndef __T4_HW_H

#define __T4_HW_H

#include <linux/types.h>

enum {

	NCHAN          = 4,     /* # of HW channels */

	MAX_MTU        = 9600,  /* max MAC MTU, excluding header + FCS */

	EEPROMSIZE     = 17408, /* Serial EEPROM physical size */

	EEPROMVSIZE    = 32768, /* Serial EEPROM virtual address space size */

	RSS_NENTRIES   = 2048,  /* # of entries in RSS mapping table */

	TCB_SIZE       = 128,   /* TCB size */

	NMTUS          = 16,    /* size of MTU table */

	NCCTRL_WIN     = 32,    /* # of congestion control windows */

	NEXACT_MAC     = 336,   /* # of exact MAC address filters */

	L2T_SIZE       = 4096,  /* # of L2T entries */

	MBOX_LEN       = 64,    /* mailbox size in bytes */

	TRACE_LEN      = 112,   /* length of trace data and mask */

	FILTER_OPT_LEN = 36,    /* filter tuple width for optional components */

	NWOL_PAT       = 8,     /* # of WoL patterns */

	WOL_PAT_LEN    = 128,   /* length of WoL patterns */

};

enum {

	SF_PAGE_SIZE = 256,           /* serial flash page size */

	SF_SEC_SIZE = 64 * 1024,      /* serial flash sector size */

	SF_SIZE = SF_SEC_SIZE * 16,   /* serial flash size */

};

enum { RSP_TYPE_FLBUF, RSP_TYPE_CPL, RSP_TYPE_INTR }; /* response entry types */

enum { MBOX_OWNER_NONE, MBOX_OWNER_FW, MBOX_OWNER_DRV };    /* mailbox owners */

enum {

	SGE_MAX_WR_LEN = 512,     /* max WR size in bytes */

	SGE_NTIMERS = 6,          /* # of interrupt holdoff timer values */

	SGE_NCOUNTERS = 4,        /* # of interrupt packet counter values */

};

struct sge_qstat {                /* data written to SGE queue status entries */

	__be32 qid;

	__be16 cidx;

	__be16 pidx;

};

/*

 * Structure for last 128 bits of response descriptors

 */

struct rsp_ctrl {

	__be32 hdrbuflen_pidx;

	__be32 pldbuflen_qid;

	union {

		u8 type_gen;

		__be64 last_flit;

	};

};

#define RSPD_NEWBUF 0x80000000U

#define RSPD_LEN    0x7fffffffU

#define RSPD_GEN(x)  ((x) >> 7)

#define RSPD_TYPE(x) (((x) >> 4) & 3)

#define QINTR_CNT_EN       0x1

#define QINTR_TIMER_IDX(x) ((x) << 1)

#endif /* __T4_HW_H */