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      1 /*	$NetBSD: pciide_sl82c105_reg.h,v 1.6 2008/04/28 20:23:55 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*
     33  * Register definitions for the Symphony Labs 82C105 PCI IDE
     34  * interface.  This 82C105 is also found embedded in the Winbond
     35  * 83C553 Southbridge.
     36  */
     37 
     38 /* PCI configuration space registers */
     39 
     40 #define	SYMPH_PORT0_P	(PCI_MAPREG_START + 0x00)	/* port 0 primary */
     41 #define	SYMPH_PORT0_S	(PCI_MAPREG_START + 0x04)	/* port 0 secondary */
     42 #define	SYMPH_PORT1_P	(PCI_MAPREG_START + 0x08)	/* port 1 primary */
     43 #define	SYMPH_PORT1_S	(PCI_MAPREG_START + 0x0c)	/* port 1 secondary */
     44 #define	SYMPH_BMIDER	(PCI_MAPREG_START + 0x10)	/* bus master regs */
     45 
     46 #define	SYMPH_IDECSR	0x40		/* IDE control/status */
     47 #define	SYMPH_P0D0CR	0x44		/* port 0 drive 0 control */
     48 #define	SYMPH_P0D1CR	0x48		/* port 0 drive 1 control */
     49 #define	SYMPH_P1D0CR	0x4c		/* port 1 drive 0 control */
     50 #define	SYMPH_P1D1CR	0x50		/* port 1 drive 1 control */
     51 
     52 #define	IDECR_IDE_IRQB	(1U << 30)	/* IDE_IRQB signal */
     53 #define	IDECR_IDE_IRQA	(1U << 28)	/* IDE_IRQA signal */
     54 #define	IDECR_RA_SHIFT	16		/* read-ahead duration */
     55 #define	IDECR_RA_MASK	(0x7ff << IDECR_RA_SHIFT)
     56 #define	IDECR_LEGIRQ	(1U << 11)	/* don't use legacy IRQ mode */
     57 #define	IDECR_P1F16	(1U << 5)	/* port 1 fast 16 */
     58 #define	IDECR_P1EN	(1U << 4)	/* port 1 enable */
     59 #define	IDECR_P0F16	(1U << 1)	/* port 0 fast 16 */
     60 #define	IDECR_P0EN	(1U << 0)	/* port 0 enable */
     61 
     62 #define	PxDx_USR_SHIFT	16		/* user defined bits */
     63 #define	PxDx_USR_MASK	(0xff << PxDx_USR_SHIFT)
     64 #define	PxDx_CMD_ON_SHIFT 8		/* CMD ON time */
     65 #define	PxDx_CMD_ON_MASK (0x1f << PxDx_CMD_ON_SHIFT)
     66 #define	PxDx_PWEN	(1U << 7)	/* posted write enable */
     67 #define	PxDx_RDYEN	(1U << 6)	/* IOCHRDY enable */
     68 #define	PxDx_RAEN	(1U << 5)	/* read-ahead enable */
     69 #define	PxDx_CMD_OFF_MASK (0x1f)	/* CMD OFF time */
     70 
     71 /*
     72  * IDE CMD ON and CMD OFF times for a 33MHz PCI bus clock.
     73  *
     74  * These come from Table 4-4 of the 83c553 manual.
     75  */
     76 struct symph_cmdtime {
     77 	int	cmd_on;		/* cmd on time */
     78 	int	cmd_off;	/* cmd off time */
     79 };
     80 
     81 static const struct symph_cmdtime symph_pio_times[]
     82     __unused = {
     83 /*        programmed               actual       */
     84 	{ 5, 13 },		/* 6, 14 */
     85 	{ 4, 7 },		/* 5, 8 */
     86 	{ 3, 4 },		/* 4, 5 */
     87 	{ 2, 2 },		/* 3, 3 */
     88 	{ 2, 0 },		/* 3, 1 */
     89 	{ 1, 0 },		/* 2, 1 */
     90 };
     91 
     92 static const struct symph_cmdtime symph_sw_dma_times[]
     93     __unused = {
     94 /*        programmed               actual       */
     95 	{ 15, 15 },		/* 16, 16 */
     96 };
     97 
     98 static const struct symph_cmdtime symph_mw_dma_times[]
     99      __unused = {
    100 /*        programmed               actual       */
    101 	{ 7, 7 },		/* 8, 8 */
    102 	{ 2, 1 },		/* 3, 2 */
    103 	{ 2, 0 },		/* 3, 1 */
    104 	{ 1, 0 },		/* 2, 1 */
    105 };
    106