Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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1 /* 2 * Copyright (c) 1996, Sujal M. Patel 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Sujal M. Patel 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: src/sys/isa/pnpreg.h,v 184.108.40.206 2000/05/11 11:10:35 nyan Exp $ 33 * from: pnp.h,v 1.7 1998/09/13 22:15:44 eivind Exp 34 */ 35 36 #ifndef _ISA_PNPREG_H_ 37 #define _ISA_PNPREG_H_ 38 39 /* Maximum Number of PnP Devices. 8 should be plenty */ 40 #define PNP_MAX_CARDS 8 41 42 #if 0 43 /* 44 * the following is the maximum number of PnP Logical devices that 45 * userconfig can handle. 46 */ 47 #define MAX_PNP_LDN 20 48 #endif 49 50 /* Static ports to access PnP state machine */ 51 #ifdef PC98 52 #define _PNP_ADDRESS 0x259 53 #define _PNP_WRITE_DATA 0xa59 54 #else 55 #define _PNP_ADDRESS 0x279 56 #define _PNP_WRITE_DATA 0xa79 57 #endif 58 59 /* PnP Registers. Write to ADDRESS and then use WRITE/READ_DATA */ 60 #define PNP_SET_RD_DATA 0x00 61 /*** 62 Writing to this location modifies the address of the port used for 63 reading from the Plug and Play ISA cards. Bits[7:0] become I/O 64 read port address bits[9:2]. Reads from this register are ignored. 65 ***/ 66 67 #define PNP_SERIAL_ISOLATION 0x01 68 /*** 69 A read to this register causes a Plug and Play cards in the Isolation 70 state to compare one bit of the boards ID. 71 This register is read only. 72 ***/ 73 74 #define PNP_CONFIG_CONTROL 0x02 75 #define PNP_CONFIG_CONTROL_RESET_CSN 0x04 76 #define PNP_CONFIG_CONTROL_WAIT_FOR_KEY 0x02 77 #define PNP_CONFIG_CONTROL_RESET 0x01 78 /*** 79 Bit Reset CSN to 0 80 Bit Return to the Wait for Key state 81 Bit Reset all logical devices and restore configuration 82 registers to their power-up values. 83 84 A write to bit of this register performs a reset function on 85 all logical devices. This resets the contents of configuration 86 registers to their default state. All card's logical devices 87 enter their default state and the CSN is preserved. 88 89 A write to bit of this register causes all cards to enter the 90 Wait for Key state but all CSNs are preserved and logical devices 91 are not affected. 92 93 A write to bit of this register causes all cards to reset their 94 CSN to zero . 95 96 This register is write-only. The values are not sticky, that is, 97 hardware will automatically clear them and there is no need for 98 software to clear the bits. 99 ***/ 100 101 #define PNP_WAKE 0x03 102 /*** 103 A write to this port will cause all cards that have a CSN that 104 matches the write data[7:0] to go from the Sleep state to the either 105 the Isolation state if the write data for this command is zero or 106 the Config state if the write data is not zero. Additionally, the 107 pointer to the byte-serial device is reset. This register is 108 writeonly. 109 ***/ 110 111 #define PNP_RESOURCE_DATA 0x04 112 /*** 113 A read from this address reads the next byte of resource information. 114 The Status register must be polled until bit is set before this 115 register may be read. This register is read only. 116 ***/ 117 118 #define PNP_STATUS 0x05 119 /*** 120 Bit when set indicates it is okay to read the next data byte 121 from the Resource Data register. This register is readonly. 122 ***/ 123 124 #define PNP_SET_CSN 0x06 125 /*** 126 A write to this port sets a card's CSN. The CSN is a value uniquely 127 assigned to each ISA card after the serial identification process 128 so that each card may be individually selected during a Wake[CSN] 129 command. This register is read/write. 130 ***/ 131 132 #define PNP_SET_LDN 0x07 133 /*** 134 Selects the current logical device. All reads and writes of memory, 135 I/O, interrupt and DMA configuration information access the registers 136 of the logical device written here. In addition, the I/O Range 137 Check and Activate commands operate only on the selected logical 138 device. This register is read/write. If a card has only 1 logical 139 device, this location should be a read-only value of 0x00. 140 ***/ 141 142 /*** addresses 0x08 - 0x1F Card Level Reserved for future use ***/ 143 /*** addresses 0x20 - 0x2F Card Level, Vendor Defined ***/ 144 145 #define PNP_ACTIVATE 0x30 146 /*** 147 For each logical device there is one activate register that controls 148 whether or not the logical device is active on the ISA bus. Bit, 149 if set, activates the logical device. Bits[7:1] are reserved and 150 must return 0 on reads. This is a read/write register. Before a 151 logical device is activated, I/O range check must be disabled. 152 ***/ 153 154 #define PNP_IO_RANGE_CHECK 0x31 155 #define PNP_IO_RANGE_CHECK_ENABLE 0x02 156 #define PNP_IO_RANGE_CHECK_READ_AS_55 0x01 157 /*** 158 This register is used to perform a conflict check on the I/O port 159 range programmed for use by a logical device. 160 161 Bit[7:2] Reserved and must return 0 on reads 162 Bit Enable I/O Range check, if set then I/O Range Check 163 is enabled. I/O range check is only valid when the logical 164 device is inactive. 165 166 Bit, if set, forces the logical device to respond to I/O reads 167 of the logical device's assigned I/O range with a 0x55 when I/O 168 range check is in operation. If clear, the logical device drives 169 0xAA. This register is read/write. 170 ***/ 171 172 /*** addr 0x32 - 0x37 Logical Device Control Reserved for future use ***/ 173 /*** addr 0x38 - 0x3F Logical Device Control Vendor Define ***/ 174 175 #define PNP_MEM_BASE_HIGH(i) (0x40 + 8*(i)) 176 #define PNP_MEM_BASE_LOW(i) (0x41 + 8*(i)) 177 #define PNP_MEM_CONTROL(i) (0x42 * 8*(i)) 178 #define PNP_MEM_CONTROL_16BIT 0x2 179 #define PNP_MEM_CONTROL_LIMIT 0x1 180 #define PNP_MEM_RANGE_HIGH(i) (0x43 + 8*(i)) 181 #define PNP_MEM_RANGE_LOW(i) (0x44 + 8*(i)) 182 /*** 183 Four memory resource registers per range, four ranges. 184 Fill with 0 if no ranges are enabled. 185 186 Offset 0: RW Memory base address bits[23:16] 187 Offset 1: RW Memory base address bits[15:8] 188 Offset 2: Memory control 189 Bit specifies 8/16-bit control. This bit is set to indicate 190 16-bit memory, and cleared to indicate 8-bit memory. 191 Bit, if cleared, indicates the next field can be used as a range 192 length for decode (implies range length and base alignment of memory 193 descriptor are equal). 194 Bit, if set, indicates the next field is the upper limit for 195 the address. - - Bit is read-only. 196 Offset 3: RW upper limit or range len, bits[23:16] 197 Offset 4: RW upper limit or range len, bits[15:8] 198 Offset 5-Offset 7: filler, unused. 199 ***/ 200 201 #define PNP_IO_BASE_HIGH(i) (0x60 + 2*(i)) 202 #define PNP_IO_BASE_LOW(i) (0x61 + 2*(i)) 203 /*** 204 Eight ranges, two bytes per range. 205 Offset 0: I/O port base address bits[15:8] 206 Offset 1: I/O port base address bits[7:0] 207 ***/ 208 209 #define PNP_IRQ_LEVEL(i) (0x70 + 2*(i)) 210 #define PNP_IRQ_TYPE(i) (0x71 + 2*(i)) 211 /*** 212 Two entries, two bytes per entry. 213 Offset 0: RW interrupt level (1..15, 0=unused). 214 Offset 1: Bit: level(1:hi, 0:low), 215 Bit: type (1:level, 0:edge) 216 byte 1 can be readonly if 1 type of int is used. 217 ***/ 218 219 #define PNP_DMA_CHANNEL(i) (0x74 + 1*(i)) 220 /*** 221 Two entries, one byte per entry. Bits[2:0] select 222 which DMA channel is in use for DMA 0. Zero selects DMA channel 223 0, seven selects DMA channel 7. DMA channel 4, the cascade channel 224 is used to indicate no DMA channel is active. 225 ***/ 226 227 /*** 32-bit memory accesses are at 0x76 ***/ 228 229 /* Macros to parse Resource IDs */ 230 #define PNP_RES_TYPE(a) (a >> 7) 231 #define PNP_SRES_NUM(a) (a >> 3) 232 #define PNP_SRES_LEN(a) (a & 0x07) 233 #define PNP_LRES_NUM(a) (a & 0x7f) 234 235 /* Small Resource Item names */ 236 #define PNP_TAG_VERSION 0x1 237 #define PNP_TAG_LOGICAL_DEVICE 0x2 238 #define PNP_TAG_COMPAT_DEVICE 0x3 239 #define PNP_TAG_IRQ_FORMAT 0x4 240 #define PNP_TAG_DMA_FORMAT 0x5 241 #define PNP_TAG_START_DEPENDANT 0x6 242 #define PNP_TAG_END_DEPENDANT 0x7 243 #define PNP_TAG_IO_RANGE 0x8 244 #define PNP_TAG_IO_FIXED 0x9 245 #define PNP_TAG_RESERVED 0xa-0xd 246 #define PNP_TAG_VENDOR 0xe 247 #define PNP_TAG_END 0xf 248 249 /* Large Resource Item names */ 250 #define PNP_TAG_MEMORY_RANGE 0x1 251 #define PNP_TAG_ID_ANSI 0x2 252 #define PNP_TAG_ID_UNICODE 0x3 253 #define PNP_TAG_LARGE_VENDOR 0x4 254 #define PNP_TAG_MEMORY32_RANGE 0x5 255 #define PNP_TAG_MEMORY32_FIXED 0x6 256 #define PNP_TAG_LARGE_RESERVED 0x7-0x7f 257 258 #endif /* !_ISA_PNPREG_H_ */
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