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/* $NetBSD: pciide_pdc202xx_reg.h,v 1.1 1999/08/29 17:20:10 bouyer Exp $ */
/*
* Copyright (c) 1999 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 PROMISE PDC20246 PCI IDE controller.
* Unfortunably the HW docs available don't provide much informations
* Most of the values set in registers comes from the FreeBSD and linux
* drivers, and from experiments with the BIOS of a Promise Ultra/33 board.
*/
/* controller initial state */
#define PDC2xx_STATE 0x50
#define PDC2xx_STATE_SHIPID 0x8000
#define PDC2xx_STATE_IOCHRDY 0x0400
#define PDC2xx_STATE_LBA(channel) (0x0100 << (channel))
#define PDC2xx_STATE_NATIVE 0x0080
#define PDC2xx_STATE_ISAIRQ 0x0008
#define PDC2xx_STATE_EN(channel) (0x0002 << (channel))
#define PDC2xx_STATE_IDERAID 0x0001
/* per-drive timings */
#define PDC2xx_TIM(channel, drive) (0x60 + 4 * (drive) + 8 * (channel))
#define PDC2xx_TIM_SET_PA(r, x) (((r) & 0xfffffff0) | ((x) & 0xf))
#define PDC2xx_TIM_SET_PB(r, x) (((r) & 0xffffe0ff) | (((x) & 0x1f) << 8))
#define PDC2xx_TIM_SET_MB(r, x) (((r) & 0xffff1fff) | (((x) & 0x7) << 13))
#define PDC2xx_TIM_SET_MC(r, x) (((r) & 0xfff0ffff) | (((x) & 0xf) << 16))
#define PDC2xx_TIM_PRE 0x00000010
#define PDC2xx_TIM_IORDY 0x00000020
#define PDC2xx_TIM_ERRDY 0x00000040
#define PDC2xx_TIM_SYNC 0x00000080
#define PDC2xx_TIM_DMAW 0x00100000
#define PDC2xx_TIM_DMAR 0x00200000
#define PDC2xx_TIM_IORDYp 0x00400000
#define PDC2xx_TIM_DMARQp 0x00800000
/* The following are extentions of the DMA registers */
/* primary mode (1 byte) */
#define PDC2xx_PM 0x1a
/* secondary mode (1 byte) */
#define PDC2xx_SM 0x1b
/* System control register (4 bytes) */
#define PDC2xx_SCR 0x1c
#define PDC2xx_SCR_SET_GEN(r,x) (((r) & 0xfffffff0) | ((x) & 0xf))
#define PDC2xx_SCR_EMPTY(channel) (0x00000100 << (4 * channel))
#define PDC2xx_SCR_FULL(channel) (0x00000200 << (4 * channel))
#define PDC2xx_SCR_INT(channel) (0x00000400 << (4 * channel))
#define PDC2xx_SCR_ERR(channel) (0x00000800 << (4 * channel))
#define PDC2xx_SCR_SET_I2C(r,x) (((r) & 0xfff0ffff) | (((x) & 0xf) << 16))
#define PDC2xx_SCR_SET_POLL(r,x) (((r) & 0xff0fffff) | (((x) & 0xf) << 20))
#define PDC2xx_SCR_DMA 0x01000000
#define PDC2xx_SCR_IORDY 0x02000000
#define PDC2xx_SCR_G2FD 0x04000000
#define PDC2xx_SCR_FLOAT 0x08000000
#define PDC2xx_SCR_RSET 0x10000000
#define PDC2xx_SCR_TST 0x20000000
/*
* The timings provided here results from things gathered from the FreeBSD
* driver and experimentations with the BIOS of a promise board.
* Unfortunably I didn't have enouth HW to test all the modes.
* They may be suboptimal.
*/
static int8_t pdc2xx_pa[] = {0x4, 0x4, 0x4, 0x7, 0x3};
static int8_t pdc2xx_pb[] = {0x13, 0x13, 0x13, 0xf, 0x7};
static int8_t pdc2xx_dma_mb[] = {0x7, 0x3, 0x3};
static int8_t pdc2xx_dma_mc[] = {0xf, 0x4, 0x3};
static int8_t pdc2xx_udma_mb[] = {0x3, 0x2, 0x1, 0x2, 0x1};
static int8_t pdc2xx_udma_mc[] = {0x1, 0x1, 0x1, 0x1, 0x1};
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