/*      $NetBSD: if_smapreg.h,v 1.4 2014/03/31 11:25:49 martin Exp $    */

/*-
 * Copyright (c) 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by UCHIYAMA Yasushi.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * SMAP memory access layer.
 *
 *    <-> FIFO <-> BUF  
 * CPU              +<-----> EMAC3
 *    <----------> DESC
 */

/*
 * Buffer (accessed by FIFO or EMAC3. indexed by descriptor)
 */
#define SMAP_TXBUF_BASE         0x1000
#define SMAP_TXBUF_SIZE         0x1000
#define SMAP_RXBUF_BASE         0x4000
#define SMAP_RXBUF_SIZE         0x4000

/*
 * FIFO access
 */
#define SMAP_TXFIFO_CTRL_REG8           MIPS_PHYS_TO_KSEG1(0x14001000)
#define SMAP_TXFIFO_PTR_REG16           MIPS_PHYS_TO_KSEG1(0x14001004)
#define SMAP_TXFIFO_FRAME_REG8          MIPS_PHYS_TO_KSEG1(0x1400100c)
#define SMAP_TXFIFO_FRAME_INC_REG8      MIPS_PHYS_TO_KSEG1(0x14001010)
#define SMAP_TXFIFO_DATA_REG            MIPS_PHYS_TO_KSEG1(0x14001100)
#define SMAP_RXFIFO_CTRL_REG8           MIPS_PHYS_TO_KSEG1(0x14001030)
#define SMAP_RXFIFO_PTR_REG16           MIPS_PHYS_TO_KSEG1(0x14001034)
#define SMAP_RXFIFO_FRAME_REG8          MIPS_PHYS_TO_KSEG1(0x1400103c)
#define SMAP_RXFIFO_FRAME_DEC_REG8      MIPS_PHYS_TO_KSEG1(0x14001040)
#define SMAP_RXFIFO_DATA_REG            MIPS_PHYS_TO_KSEG1(0x14001200)
#define   SMAP_FIFO_RESET       0x01

/*
 * Descriptor access
 */
#define SMAP_DESC_MODE_REG8             MIPS_PHYS_TO_KSEG1(0x14000102)
#define   SMAP_DESC_MODE_SWAP   0x0001

#define SMAP_TXDESC_BASE                MIPS_PHYS_TO_KSEG1(0x14003000)
#define SMAP_RXDESC_BASE                MIPS_PHYS_TO_KSEG1(0x14003200)
#define SMAP_DESC_MAX           64
struct smap_desc {
        u_int16_t stat;
        u_int16_t __reserved;
        u_int16_t sz;
        u_int16_t ptr;
}__attribute__((__packed__, __aligned__(8)));

/* TX Control */
#define SMAP_TXDESC_READY       0x8000
#define SMAP_TXDESC_GENFCS      0x0200
#define SMAP_TXDESC_GENPAD      0x0100
#define SMAP_TXDESC_INSSA       0x0080
#define SMAP_TXDESC_RPLSA       0x0040
#define SMAP_TXDESC_INSVLAN     0x0020
#define SMAP_TXDESC_RPLVLAN     0x0010

/* TX Status */
#define SMAP_TXDESC_READY       0x8000
#define SMAP_TXDESC_BADFCS      0x0200
#define SMAP_TXDESC_BADPKT      0x0100
#define SMAP_TXDESC_LOSSCR      0x0080
#define SMAP_TXDESC_EDEFER      0x0040
#define SMAP_TXDESC_ECOLL       0x0020
#define SMAP_TXDESC_LCOLL       0x0010
#define SMAP_TXDESC_MCOLL       0x0008
#define SMAP_TXDESC_SCOLL       0x0004
#define SMAP_TXDESC_UNDERRUN    0x0002
#define SMAP_TXDESC_SQE         0x0001

/* RX Control */
#define SMAP_RXDESC_EMPTY       0x8000

/* RX Status */
#define SMAP_RXDESC_EMPTY       0x8000
#define SMAP_RXDESC_OVERRUN     0x0200
#define SMAP_RXDESC_PFRM        0x0100
#define SMAP_RXDESC_BADFRM      0x0080
#define SMAP_RXDESC_RUNTFRM     0x0040
#define SMAP_RXDESC_SHORTEVNT   0x0020
#define SMAP_RXDESC_ALIGNERR    0x0010
#define SMAP_RXDESC_BADFCS      0x0008
#define SMAP_RXDESC_FRMTOOLONG  0x0004
#define SMAP_RXDESC_OUTRANGE    0x0002
#define SMAP_RXDESC_INRANGE     0x0001