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/* $OpenBSD: pciide_cy693_reg.h,v 1.2 1999/10/04 22:54:18 deraadt Exp $ */
/* $NetBSD: pciide_cy693_reg.h,v 1.2 1998/12/03 14:06:16 bouyer Exp $ */
/*
* Copyright (c) 1998 Manuel Bouyer.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
*/
/*
* Registers definitions for Contaq/Cypress's CY82693U PCI IDE controller.
* Available from http://www.cypress.com/japan/prodgate/chip/cy82c693.html
* This chip has 2 PCI IDE functions, each of them has only one channel
* So there's no primary/secodary distinction in the registers defs.
*/
/* IDE control register */
#define CY_CTRL 0x40
#define CY_CTRL_RETRY 0x00002000
#define CY_CTRL_SLAVE_PREFETCH 0x00000400
#define CY_CTRL_POSTWRITE 0x00000200
#define CY_CTRL_PREFETCH(drive) (0x00000100 << (2 * (drive)))
#define CY_CTRL_POSTWRITE_LENGTH_MASK 0x00000030
#define CY_CTRL_POSTWRITE_LENGTH_OFF 4
#define CY_CTRL_PREFETCH_LENGTH_MASK 0x00000003
#define CY_CTRL_PREFETCH_LENGTH_OFF 0
/* IDE addr setup control register */
#define CY_ADDR_CTRL 0x48
#define CY_ADDR_CTRL_SETUP_OFF(drive) (4 * (drive))
#define CY_ADDR_CTRL_SETUP_MASK(drive) \
(0x00000007 << CY_ADDR_CTRL_SETUP_OFF(drive))
/* command control register */
#define CY_CMD_CTRL 0x4c
#define CY_CMD_CTRL_IOW_PULSE_OFF(drive) (12 + 16 * (drive))
#define CY_CMD_CTRL_IOW_REC_OFF(drive) (8 + 16 * (drive))
#define CY_CMD_CTRL_IOR_PULSE_OFF(drive) (4 + 16 * (drive))
#define CY_CMD_CTRL_IOR_REC_OFF(drive) (0 + 16 * (drive))
static int8_t cy_pio_pulse[] = {9, 4, 3, 2, 2};
static int8_t cy_pio_rec[] = {9, 7, 4, 2, 0};
#ifdef unused
static int8_t cy_dma_pulse[] = {7, 2, 2};
static int8_t cy_dma_rec[] = {7, 1, 0};
#endif
/*
* The cypress is quite weird: it uses 8-bit ISA registers to control
* DMA modes.
*/
#define CY_DMA_ADDR 0x22
#define CY_DMA_SIZE 0x2
#define CY_DMA_IDX 0x00
#define CY_DMA_IDX_PRIMARY 0x30
#define CY_DMA_IDX_SECONDARY 0x31
#define CY_DMA_IDX_TIMEOUT 0x32
#define CY_DMA_DATA 0x01
/* Multiword DMA transfer, for CY_DMA_IDX_PRIMARY or CY_DMA_IDX_SECONDARY */
#define CY_DMA_DATA_MODE_MASK 0x03
#define CY_DMA_DATA_SINGLE 0x04
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