/* $NetBSD: pciide_sl82c105_reg.h,v 1.6 2008/04/28 20:23:55 martin Exp $ */

/* $NetBSD: pciide_sl82c105_reg.h,v 1.6 2008/04/28 20:23:55 martin Exp $ */

/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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.
*/

/*
* Register definitions for the Symphony Labs 82C105 PCI IDE
* interface. This 82C105 is also found embedded in the Winbond
* 83C553 Southbridge.
*/

/* PCI configuration space registers */

#define SYMPH_PORT0_P (PCI_MAPREG_START + 0x00) /* port 0 primary */
#define SYMPH_PORT0_S (PCI_MAPREG_START + 0x04) /* port 0 secondary */
#define SYMPH_PORT1_P (PCI_MAPREG_START + 0x08) /* port 1 primary */
#define SYMPH_PORT1_S (PCI_MAPREG_START + 0x0c) /* port 1 secondary */
#define SYMPH_BMIDER (PCI_MAPREG_START + 0x10) /* bus master regs */

#define SYMPH_IDECSR 0x40 /* IDE control/status */
#define SYMPH_P0D0CR 0x44 /* port 0 drive 0 control */
#define SYMPH_P0D1CR 0x48 /* port 0 drive 1 control */
#define SYMPH_P1D0CR 0x4c /* port 1 drive 0 control */
#define SYMPH_P1D1CR 0x50 /* port 1 drive 1 control */

#define IDECR_IDE_IRQB (1U << 30) /* IDE_IRQB signal */
#define IDECR_IDE_IRQA (1U << 28) /* IDE_IRQA signal */
#define IDECR_RA_SHIFT 16 /* read-ahead duration */
#define IDECR_RA_MASK (0x7ff << IDECR_RA_SHIFT)
#define IDECR_LEGIRQ (1U << 11) /* don't use legacy IRQ mode */
#define IDECR_P1F16 (1U << 5) /* port 1 fast 16 */
#define IDECR_P1EN (1U << 4) /* port 1 enable */
#define IDECR_P0F16 (1U << 1) /* port 0 fast 16 */
#define IDECR_P0EN (1U << 0) /* port 0 enable */

#define PxDx_USR_SHIFT 16 /* user defined bits */
#define PxDx_USR_MASK (0xff << PxDx_USR_SHIFT)
#define PxDx_CMD_ON_SHIFT 8 /* CMD ON time */
#define PxDx_CMD_ON_MASK (0x1f << PxDx_CMD_ON_SHIFT)
#define PxDx_PWEN (1U << 7) /* posted write enable */
#define PxDx_RDYEN (1U << 6) /* IOCHRDY enable */
#define PxDx_RAEN (1U << 5) /* read-ahead enable */
#define PxDx_CMD_OFF_MASK (0x1f) /* CMD OFF time */

/*
* IDE CMD ON and CMD OFF times for a 33MHz PCI bus clock.
*
* These come from Table 4-4 of the 83c553 manual.
*/
struct symph_cmdtime {
int cmd_on; /* cmd on time */
int cmd_off; /* cmd off time */
};

static const struct symph_cmdtime symph_pio_times[]
__unused = {
/* programmed actual */
{ 5, 13 }, /* 6, 14 */
{ 4, 7 }, /* 5, 8 */
{ 3, 4 }, /* 4, 5 */
{ 2, 2 }, /* 3, 3 */
{ 2, 0 }, /* 3, 1 */
{ 1, 0 }, /* 2, 1 */
};

static const struct symph_cmdtime symph_sw_dma_times[]
__unused = {
/* programmed actual */
{ 15, 15 }, /* 16, 16 */
};

static const struct symph_cmdtime symph_mw_dma_times[]
__unused = {
/* programmed actual */
{ 7, 7 }, /* 8, 8 */
{ 2, 1 }, /* 3, 2 */
{ 2, 0 }, /* 3, 1 */
{ 1, 0 }, /* 2, 1 */
};