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pciide_cy693_reg.h revision 1.6 
      1 /*	$NetBSD: pciide_cy693_reg.h,v 1.6 2002/04/23 20:41:18 bouyer 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 Manuel Bouyer.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  *
     32  */
     33 
     34 /*
     35  * Registers definitions for Contaq/Cypress's CY82693U PCI IDE controller.
     36  * Available from http://www.cypress.com/japan/prodgate/chip/cy82c693.html
     37  * This chip has 2 PCI IDE functions, each of them has only one channel
     38  * So there's no primary/secodary distinction in the registers defs.
     39  */
     40 
     41 /* IDE control register */
     42 #define CY_CTRL 0x40
     43 #define CY_CTRL_RETRY			0x00002000
     44 #define CY_CTRL_SLAVE_PREFETCH		0x00000400
     45 #define CY_CTRL_POSTWRITE		0x00000200
     46 #define	CY_CTRL_PREFETCH(drive)		(0x00000100 << (2 * (drive)))
     47 #define CY_CTRL_POSTWRITE_LENGTH_MASK	0x00000030
     48 #define CY_CTRL_POSTWRITE_LENGTH_OFF    4
     49 #define CY_CTRL_PREFETCH_LENGTH_MASK	0x00000003
     50 #define CY_CTRL_PREFETCH_LENGTH_OFF	0
     51 
     52 /* IDE addr setup control register */
     53 #define CY_ADDR_CTRL 0x48
     54 #define CY_ADDR_CTRL_SETUP_OFF(drive)  (4 * (drive))
     55 #define CY_ADDR_CTRL_SETUP_MASK(drive) \
     56 	(0x00000007 << CY_ADDR_CTRL_SETUP_OFF(drive))
     57 
     58 /* command control register */
     59 #define CY_CMD_CTRL 0x4c
     60 #define CY_CMD_CTRL_IOW_PULSE_OFF(drive)	(12 + 16 * (drive))
     61 #define CY_CMD_CTRL_IOW_REC_OFF(drive)		(8 + 16 * (drive))
     62 #define CY_CMD_CTRL_IOR_PULSE_OFF(drive)	(4 + 16 * (drive))
     63 #define CY_CMD_CTRL_IOR_REC_OFF(drive)		(0 + 16 * (drive))
     64 
     65 static const int8_t cy_pio_pulse[] __attribute__((__unused__)) =
     66     {9, 4, 3, 2, 2};
     67 static const int8_t cy_pio_rec[] __attribute__((__unused__)) =
     68     {9, 7, 4, 2, 0};
     69 #ifdef unused
     70 static const int8_t cy_dma_pulse[] __attribute__((__unused__)) =
     71     {7, 2, 2};
     72 static const int8_t cy_dma_rec[] __attribute__((__unused__)) =
     73     {7, 1, 0};
     74 #endif
     75 
     76 /*
     77  * The cypress is quite weird: it uses 8-bit ISA registers to control
     78  * DMA modes.
     79  */
     80 
     81 #define CY_DMA_ADDR 0x22
     82 #define CY_DMA_SIZE 0x2
     83 
     84 #define CY_DMA_IDX 0x00
     85 #define CY_DMA_IDX_PRIMARY	0x30
     86 #define CY_DMA_IDX_SECONDARY	0x31
     87 #define CY_DMA_IDX_TIMEOUT	0x32
     88 
     89 #define CY_DMA_DATA 0x01
     90 /* Multiword DMA transfer, for CY_DMA_IDX_PRIMARY or CY_DMA_IDX_SECONDARY */
     91 #define CY_DMA_DATA_MODE_MASK	0x03
     92 #define CY_DMA_DATA_SINGLE	0x04
     93