2 /* $NecBSD: ncr53c500reg.h,v 1.5.14.1 2001/06/08 06:27:44 honda Exp $ */
6 * SPDX-License-Identifier: BSD-3-Clause
8 * [NetBSD for NEC PC-98 series]
9 * Copyright (c) 1995, 1996, 1997, 1998
10 * NetBSD/pc98 porting staff. All rights reserved.
11 * Copyright (c) 1995, 1996, 1997, 1998
12 * Naofumi HONDA. All rights reserved.
13 * Copyright (c) 1995, 1996, 1997, 1998
14 * Kouichi Matsuda. All rights reserved.
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 * 3. The name of the author may not be used to endorse or promote products
25 * derived from this software without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
28 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
29 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
30 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
31 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
32 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
33 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
36 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
40 #ifndef _NCR53C500REG_H_
41 #define _NCR53C500REG_H_
43 /* Control Register Set 0 */
46 #define cr0_tclsb 0x00 /* RW - Transfer Count Low */
47 #define cr0_tcmsb 0x01 /* RW - Transfer Count Mid */
48 #define cr0_sfifo 0x02 /* RW - FIFO data */
49 #define cr0_cmd 0x03 /* RW - Command (2 deep) */
50 #define cr0_stat 0x04 /* RO - Status */
51 #define cr0_dstid 0x04 /* WO - Select/Reselect Bus ID */
52 #define cr0_istat 0x05 /* RO - Interrupt */
53 #define cr0_srtout 0x05 /* WO - Select/Reselect Timeout */
54 #define cr0_seq 0x06 /* RO - Sequence Step */
55 #define cr0_period 0x06 /* WO - Synch Transfer Period */
56 #define cr0_sffl 0x07 /* RO - FIFO FLags */
57 #define cr0_offs 0x07 /* WO - Synch Ofset */
58 #define cr0_cfg1 0x08 /* RW - Configuration #1 */
59 #define cr0_clk 0x09 /* WO - Clock Conversion Factor */
60 #define cr0_tst 0x0a /* WO - Test (Chip Test Only) */
61 #define cr0_cfg2 0x0b /* RW - Configuration #2 */
62 #define cr0_cfg3 0x0c /* RW - Configuration #3 */
63 #define cr0_cfg4 0x0d /* RW - Configuration #4 */
64 #define cr0_tchsb 0x0e /* RW - Transfer Count High */
65 #define cr0_fifo_bottom 0x0f /* WO - FIFO bottom */
67 /* Control Register Set 1 */
68 #define cr1_jumper 0x00 /* RW - Jumper Sense Port */
69 #define cr1_sram_ptr 0x01 /* RW - SRAM Address Pointer */
70 #define cr1_sram_data 0x02 /* RW - SRAM Data */
71 #define cr1_fdata 0x04 /* RW - PIO FIFO */
72 #define cr1_fstat 0x08 /* RW - PIO Status */
73 #define cr1_atacmd 0x09 /* RW - ATA Command/Status */
74 #define cr1_ataerr 0x0a /* RW - ATA Features/Error */
75 #define cr1_pflag 0x0b /* RW - PIO Flag Interrupt Enable */
76 #define cr1_cfg5 0x0d /* RW - Configuration #5 */
77 #define cr1_sig 0x0e /* RO - Signature */
78 #define cr1_cfg6 0x0f /* RW - Configuration #6 */
80 /* atacmd (MPS110 ONLY) */
81 #define ATACMD_POWDOWN 0x2d
82 #define ATACMD_ENGAGE 0x24
84 /* cr0_sffl regster */
85 #define CR0_SFFLR_BMASK 0x1f /* scsi fifo byte mask */
91 #define C2_SCSI2 0x08 /* SCSI-2 Enable */
92 #define C2_FE 0x40 /* Features Enable */
95 #define C1_SLOW 0x80 /* Slow Cable Mode */
96 #define C1_SRR 0x40 /* SCSI Reset Rep Int Dis */
97 #define C1_PARENB 0x10 /* Enable Parity Check */
100 #define CLK_40M_F 0x00
101 #define CLK_25M_F 0x05
102 #define CLK_30M_F 0x06
103 #define CLK_35M_F 0x07
105 /* interrupt status register */
106 #define INTR_SBR 0x80 /* SCSI Bus Reset */
107 #define INTR_ILL 0x40 /* Illegal Command */
108 #define INTR_DIS 0x20 /* Disconnect */
109 #define INTR_BS 0x10 /* Bus Service */
110 #define INTR_FC 0x08 /* Function Complete */
111 #define INTR_RESEL 0x04 /* Reselected */
112 #define INTR_SELATN 0x02 /* Select with ATN */
113 #define INTR_SEL 0x01 /* Selected */
114 #define INTR_RESELECT (INTR_RESEL | INTR_FC)
116 /* status register */
117 #define STAT_INT 0x80 /* Interrupt */
118 #define STAT_GE 0x40 /* Gross Error */
119 #define STAT_PE 0x20 /* Parity Error */
120 #define STAT_TC 0x10 /* Terminal Count */
127 /* Information transfer phases */
128 #define DATA_OUT_PHASE (0)
129 #define DATA_IN_PHASE (IOI)
130 #define COMMAND_PHASE (CDI)
131 #define STATUS_PHASE (CDI|IOI)
132 #define MESSAGE_OUT_PHASE (MSGI|CDI)
133 #define MESSAGE_IN_PHASE (MSGI|CDI|IOI)
135 #define PHASE_MASK (MSGI|CDI|IOI)
137 /* fifo status register */
138 #define FIFO_SMASK 0x1e
139 #define FIFO_E 0x10 /* fifo empty */
140 #define FIFO_B 0x00 /* there exists any */
141 #define FIFO_1 0x08 /* 1/3 <= bytes < 2/3 */
142 #define FIFO_2 0x04 /* 2/3 <= bytes < full */
143 #define FIFO_F 0x02 /* full */
144 #define FIFO_EN 0x01 /* fifo direction */
145 #define FIFO_BRK 0x40 /* phase miss */
147 #define FIFO_F_SZ 128
152 #define PFR_WRITE 0x01
155 #define CMD_DMA 0x80 /* DMA Bit */
156 #define CMD_NOP 0x00 /* No Operation */
157 #define CMD_FLUSH 0x01 /* Flush FIFO */
158 #define CMD_RSTCHIP 0x02 /* Reset Chip */
159 #define CMD_RSTSCSI 0x03 /* Reset SCSI Bus */
160 #define CMD_RESEL 0x40 /* Reselect Sequence */
161 #define CMD_SELNATN 0x41 /* Select without ATN */
162 #define CMD_SELATN 0x42 /* Select with ATN */
163 #define CMD_SELATNS 0x43 /* Select with ATN & Stop */
164 #define CMD_ENSEL 0x44 /* Enable (Re)Selection */
165 #define CMD_DISSEL 0x45 /* Disable (Re)Selection */
166 #define CMD_SELATN3 0x46 /* Select with ATN3 */
167 #define CMD_RESEL3 0x47 /* Reselect3 Sequence */
168 #define CMD_SNDMSG 0x20 /* Send Message */
169 #define CMD_SNDSTAT 0x21 /* Send Status */
170 #define CMD_SNDDATA 0x22 /* Send Data */
171 #define CMD_DISCSEQ 0x23 /* Disconnect Sequence */
172 #define CMD_TERMSEQ 0x24 /* Terminate Sequence */
173 #define CMD_TCCS 0x25 /* Target Command Comp Seq */
174 #define CMD_DISC 0x27 /* Disconnect */
175 #define CMD_RECMSG 0x28 /* Receive Message */
176 #define CMD_RECCMD 0x29 /* Receive Command */
177 #define CMD_RECDATA 0x2a /* Receive Data */
178 #define CMD_RECCSEQ 0x2b /* Receive Command Sequence */
179 #define CMD_ABORT 0x04 /* Target Abort DMA */
180 #define CMD_TRANS 0x10 /* Transfer Information */
181 #define CMD_ICCS 0x11 /* Initiator Cmd Comp Seq */
182 #define CMD_MSGOK 0x12 /* Message Accepted */
183 #define CMD_TRPAD 0x18 /* Transfer Pad */
184 #define CMD_SETATN 0x1a /* Set ATN */
185 #define CMD_RSTATN 0x1b /* Reset ATN */
187 /* Default timeout */
188 #define SEL_TOUT 0xa3
189 #endif /* !_NCR53C500REG_H_ */