/* $NetBSD: ninjaata32reg.h,v 1.4 2011/02/21 02:32:00 itohy Exp $ */

/* $NetBSD: ninjaata32reg.h,v 1.4 2011/02/21 02:32:00 itohy Exp $ */

/*
* Copyright (c) 2006 ITOH Yasufumi.
* All rights reserved.
*
* 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 AUTHORS 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 AUTHORS 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.
*/

#ifndef _NJATA32REG_H_
#define _NJATA32REG_H_

/*
* Workbit NinjaATA (32bit versions), IDE Controller with Busmastering PIO:
* NinjaATA-32Bi PCMCIA/CardBus dual mode device ("DuoATA")
* (CardBus mode only)
* NPATA-32 CardBus device
*/

/*
* CAVEAT
* The names and the functions of the registers are probably incorrect
* since no programming information is available in the public.
*/

#define NJATA32_REGSIZE 32 /* size of register set */
#define NJATA32_MEMOFFSET_REG 0x860 /* offset of memory mapped register */

#define NJATA32_REG_IRQ_STAT 0x00 /* len=1 RO */
#define NJATA32_REG_IRQ_SELECT 0x01 /* len=1 WO */
# define NJATA32_IRQ_XFER 0x01
# define NJATA32_IRQ_DEV 0x04

#define NJATA32_REG_IOBM 0x02 /* len=1 WO */
# define NJATA32_IOBM_01 0x01
# define NJATA32_IOBM_02 0x02
# define NJATA32_IOBM_MMENBL 0x08
# define NJATA32_IOBM_BURST 0x10
# define NJATA32_IOBM_NO_BMSTART0 0x20
# define NJATA32_IOBM_80 0x80

# define NJATA32_IOBM_DEFAULT (NJATA32_IOBM_01 | NJATA32_IOBM_02 | \
NJATA32_IOBM_BURST | NJATA32_IOBM_NO_BMSTART0 | NJATA32_IOBM_80)

#define NJATA32_REG_AS 0x04 /* len=1 WO */
# define NJATA32_AS_START 0x01 /* 0: PIO BM, 1: DMA BM */
# define NJATA32_AS_WAIT0 0x00
# define NJATA32_AS_WAIT1 0x04
# define NJATA32_AS_WAIT2 0x08
# define NJATA32_AS_WAIT3 0x0c
# define NJATA32_AS_BUS_RESET 0x80

#define NJATA32_REG_DMAADDR 0x08 /* len=4 R/W */
#define NJATA32_REG_DMALENGTH 0x0c /* len=4 R/W */

/*
* WDC registers
*/
#define NJATA32_OFFSET_WDCREGS 0x10

#define NJATA32_REG_WD_DATA 0x10 /* len=1/2/4 R/W */
#define NJATA32_REG_WD_ERROR 0x11 /* len=1 RO */
#define NJATA32_REG_WD_FEATURES 0x11 /* len=1 WO */
#define NJATA32_REG_WD_SECCNT 0x12 /* len=1 R/W */
#define NJATA32_REG_WD_IREASON 0x12 /* len=1 R/W (ATAPI) */
#define NJATA32_REG_WD_SECTOR 0x13 /* len=1 R/W */
#define NJATA32_REG_WD_LBA_LO 0x13 /* len=1 R/W */
#define NJATA32_REG_WD_CYL_LO 0x14 /* len=1 R/W */
#define NJATA32_REG_WD_LBA_MI 0x14 /* len=1 R/W */
#define NJATA32_REG_WD_CYL_HI 0x15 /* len=1 R/W */
#define NJATA32_REG_WD_LBA_HI 0x15 /* len=1 R/W */
#define NJATA32_REG_WD_SDH 0x16 /* len=1 R/W */
#define NJATA32_REG_WD_COMMAND 0x17 /* len=1 WO */
#define NJATA32_REG_WD_STATUS 0x17 /* len=1 RO */

#if 0 /* these registers seem to show the busmaster status */
/* ? */
#define NJATA32_REG_18 0x18 /* len=4 RO */
/* ? */
#define NJATA32_REG_1c 0x1c /* len=1 RO */
#endif

#define NJATA32_REG_BM 0x1d /* len=1 R/W */
# define NJATA32_BM_EN 0x01
# define NJATA32_BM_RD 0x02 /* 0: write, 1: read */
# define NJATA32_BM_SG 0x04 /* 1: use scatter/gather tbl */
# define NJATA32_BM_GO 0x08
# define NJATA32_BM_WAIT0 0x00
# define NJATA32_BM_WAIT1 0x10
# define NJATA32_BM_WAIT2 0x20
# define NJATA32_BM_WAIT3 0x30
# define NJATA32_BM_WAIT_MASK 0x30
# define NJATA32_BM_WAIT_SHIFT 4
# define NJATA32_BM_DONE 0x80 /* ? */

#define NJATA32_REG_WD_ALTSTATUS 0x1e /* len=1 R */

#define NJATA32_REG_TIMING 0x1f /* len=1 W */
/* timing values for PIO transfer */
# define NJATA32_TIMING_PIO0 0xd6
# define NJATA32_TIMING_PIO1 0x85
# define NJATA32_TIMING_PIO2 0x44
# define NJATA32_TIMING_PIO3 0x33
# define NJATA32_TIMING_PIO4 0x13
# define NJATA32_TIMING_PIO4_ 0x14 /* for timing tweak */
# define NJATA32_TIMING_PIO4__ 0x24 /* for timing tweak */
/* timing values for multiword DMA transfer */
# define NJATA32_TIMING_DMA0 0x88
# define NJATA32_TIMING_DMA1 0x23
# define NJATA32_TIMING_DMA2 0x13
/* timing values for obsolete singleword DMA transfer */
# define NJATA32_TIMING_SMDMA0 0xff
# define NJATA32_TIMING_SMDMA1 0x88
# define NJATA32_TIMING_SMDMA2 0x44

/*
* DMA data structure
*/

/* scatter/gather transfer table entry (8 bytes) */
struct njata32_sgtable {
uint32_t sg_addr; /* transfer address (little endian) */
uint32_t sg_len; /* transfer length (little endian) */
#define NJATA32_SGT_ENDMARK 0x80000000
#define NJATA32_SGT_MAXSEGLEN 0x10000
};
#define NJATA32_SGT_MAXENTRY 18

/*
* device specific constants
*/
#define NJATA32_MODE_MAX_DMA 2
#define NJATA32_MODE_MAX_PIO 4

#endif /* _NJATA32REG_H_ */