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Annotation of sys/dev/eisa/eisareg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: eisareg.h,v 1.4 1996/05/05 12:42:24 deraadt Exp $     */
                      2: /*     $NetBSD: eisareg.h,v 1.3 1996/04/09 22:46:13 cgd Exp $  */
                      3:
                      4: /*
                      5:  * Copyright (c) 1995, 1996 Christopher G. Demetriou
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *      This product includes software developed by Christopher G. Demetriou
                     19:  *      for the NetBSD Project.
                     20:  * 4. The name of the author may not be used to endorse or promote products
                     21:  *    derived from this software without specific prior written permission
                     22:  *
                     23:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     24:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     25:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     26:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     27:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     28:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     29:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     30:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     31:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     32:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     33:  */
                     34:
                     35: #ifndef __DEV_EISA_EISAREG_H__
                     36: #define        __DEV_EISA_EISAREG_H__
                     37:
                     38: /*
                     39:  * Register (etc.) descriptions for the EISA bus.
                     40:
                     41:  * Mostly culled from EISA chipset descriptions in:
                     42:  *     Intel Peripheral Components Databook (1992)
                     43:  */
                     44:
                     45: /*
                     46:  * Slot I/O space size, and I/O address of a given slot.
                     47:  */
                     48: #define        EISA_SLOT_SIZE          0x1000
                     49: #define        EISA_SLOT_ADDR(s)       ((s) * EISA_SLOT_SIZE)
                     50:
                     51: /*
                     52:  * Slot offsets for important/standard registers.
                     53:  */
                     54: #define        EISA_SLOTOFF_VID        0xc80           /* offset of vendor id regs */
                     55: #define        EISA_NVIDREGS           2
                     56: #define        EISA_SLOTOFF_PID        0xc82           /* offset of product id regs */
                     57: #define        EISA_NPIDREGS           2
                     58:
                     59: #ifdef AHA284X_HACK
                     60: /*
                     61:  * AHA-284x (VL bus) requires priming a register with the following values.
                     62:  */
                     63: #define        EISA_SLOTOFF_PRIMING    EISA_SLOTOFF_VID        /* offset */
                     64: #define        EISA_PRIMING_VID(index) (0x80 + (index))        /* value for vendor */
                     65: #define        EISA_PRIMING_PID(index) (0x82 + (index))        /* value for product */
                     66: #endif
                     67:
                     68: /*
                     69:  * EISA ID functions, used to manipulate and decode EISA ID registers.
                     70:  * ``Somebody was let out without adult supervision.''
                     71:  */
                     72:
                     73: #define        EISA_IDSTRINGLEN        8       /* length of ID string, incl. NUL */
                     74:
                     75: /*
                     76:  * Vendor ID: three characters, encoded in 16 bits.
                     77:  *
                     78:  * EISA_VENDID_NODEV returns true if there's no device in the slot.
                     79:  * EISA_VENDID_IDDELAY returns true if there's a device in the slot,
                     80:  *     but that device hasn't been configured by system firmware.
                     81:  * EISA_VENDID_n returns the "n"th character of the vendor ID.
                     82:  */
                     83: #define        EISA_VENDID_NODEV(vid)                                          \
                     84:            (((vid)[0] & 0x80) != 0)
                     85: #define        EISA_VENDID_IDDELAY(vid)                                        \
                     86:            (((vid)[0] & 0xf0) == 0x70)
                     87: #define        EISA_VENDID_0(vid)                                              \
                     88:            ((((vid)[0] & 0x7c) >> 2) + '@')
                     89: #define        EISA_VENDID_1(vid)                                              \
                     90:            (((((vid)[0] & 0x03) << 3) | (((vid)[1] & 0xe0) >> 5)) + '@')
                     91: #define        EISA_VENDID_2(vid)                                              \
                     92:            (((vid)[1] & 0x1f) + '@')
                     93:
                     94: /*
                     95:  * Product ID: four hex digits, encoded in 16 bits (normal, sort of).
                     96:  *
                     97:  * EISA_PRIDID_n returns the "n"th hex digit of the product ID.
                     98:  */
                     99: #define        __EISA_HEX_MAP  "0123456789ABCDEF"
                    100: #define        EISA_PRODID_0(pid)                                              \
                    101:            (__EISA_HEX_MAP[(((pid)[0] >> 4) & 0xf)])
                    102: #define        EISA_PRODID_1(pid)                                              \
                    103:            (__EISA_HEX_MAP[(((pid)[0] >> 0) & 0xf)])
                    104: #define        EISA_PRODID_2(pid)                                              \
                    105:            (__EISA_HEX_MAP[(((pid)[1] >> 4) & 0xf)])
                    106: #define        EISA_PRODID_3(pid)                                              \
                    107:            (__EISA_HEX_MAP[(((pid)[1] >> 0) & 0xf)])
                    108:
                    109: #endif /* !__DEV_EISA_EISAREG_H__ */