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pciide_cy693_reg.h revision 1.5 
      1 /*	$NetBSD: pciide_cy693_reg.h,v 1.5 2001/10/21 18:49:20 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998 Manuel Bouyer.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by the University of
     17  *	California, Berkeley and its contributors.
     18  * 4. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  */
     34 
     35 /*
     36  * Registers definitions for Contaq/Cypress's CY82693U PCI IDE controller.
     37  * Available from http://www.cypress.com/japan/prodgate/chip/cy82c693.html
     38  * This chip has 2 PCI IDE functions, each of them has only one channel
     39  * So there's no primary/secodary distinction in the registers defs.
     40  */
     41 
     42 /* IDE control register */
     43 #define CY_CTRL 0x40
     44 #define CY_CTRL_RETRY			0x00002000
     45 #define CY_CTRL_SLAVE_PREFETCH		0x00000400
     46 #define CY_CTRL_POSTWRITE		0x00000200
     47 #define	CY_CTRL_PREFETCH(drive)		(0x00000100 << (2 * (drive)))
     48 #define CY_CTRL_POSTWRITE_LENGTH_MASK	0x00000030
     49 #define CY_CTRL_POSTWRITE_LENGTH_OFF    4
     50 #define CY_CTRL_PREFETCH_LENGTH_MASK	0x00000003
     51 #define CY_CTRL_PREFETCH_LENGTH_OFF	0
     52 
     53 /* IDE addr setup control register */
     54 #define CY_ADDR_CTRL 0x48
     55 #define CY_ADDR_CTRL_SETUP_OFF(drive)  (4 * (drive))
     56 #define CY_ADDR_CTRL_SETUP_MASK(drive) \
     57 	(0x00000007 << CY_ADDR_CTRL_SETUP_OFF(drive))
     58 
     59 /* command control register */
     60 #define CY_CMD_CTRL 0x4c
     61 #define CY_CMD_CTRL_IOW_PULSE_OFF(drive)	(12 + 16 * (drive))
     62 #define CY_CMD_CTRL_IOW_REC_OFF(drive)		(8 + 16 * (drive))
     63 #define CY_CMD_CTRL_IOR_PULSE_OFF(drive)	(4 + 16 * (drive))
     64 #define CY_CMD_CTRL_IOR_REC_OFF(drive)		(0 + 16 * (drive))
     65 
     66 static const int8_t cy_pio_pulse[] __attribute__((__unused__)) =
     67     {9, 4, 3, 2, 2};
     68 static const int8_t cy_pio_rec[] __attribute__((__unused__)) =
     69     {9, 7, 4, 2, 0};
     70 #ifdef unused
     71 static const int8_t cy_dma_pulse[] __attribute__((__unused__)) =
     72     {7, 2, 2};
     73 static const int8_t cy_dma_rec[] __attribute__((__unused__)) =
     74     {7, 1, 0};
     75 #endif
     76 
     77 /*
     78  * The cypress is quite weird: it uses 8-bit ISA registers to control
     79  * DMA modes.
     80  */
     81 
     82 #define CY_DMA_ADDR 0x22
     83 #define CY_DMA_SIZE 0x2
     84 
     85 #define CY_DMA_IDX 0x00
     86 #define CY_DMA_IDX_PRIMARY	0x30
     87 #define CY_DMA_IDX_SECONDARY	0x31
     88 #define CY_DMA_IDX_TIMEOUT	0x32
     89 
     90 #define CY_DMA_DATA 0x01
     91 /* Multiword DMA transfer, for CY_DMA_IDX_PRIMARY or CY_DMA_IDX_SECONDARY */
     92 #define CY_DMA_DATA_MODE_MASK	0x03
     93 #define CY_DMA_DATA_SINGLE	0x04
     94