1 /* $NetBSD: cpi_nubusvar.h,v 1.2 2008/05/23 10:46:10 hauke Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 Hauke Fath 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef CPI_NUBUSVAR_H 28 #define CPI_NUBUSVAR_H 29 30 /* Where we find the Z8536 CIO in Nubus slot space */ 31 #define CIO_BASE_OFFSET 0x060010 32 33 /* Max. length of card name string */ 34 #define CPI_CARD_NAME_LEN 64 35 36 /* The CIO lives on the top 8 bit of the 32 bit data bus. */ 37 enum cio_regs { 38 CIO_PORTC = 0x03, 39 CIO_PORTB = 0x07, 40 CIO_PORTA = 0x0b, 41 CIO_CTRL = 0x0f 42 }; 43 44 #define CPI_UNIT(c) (minor(c) & 0x1f) 45 46 enum lp_state { 47 LP_INITIAL = 0, /* device is closed */ 48 LP_OPENING, /* device is about to be opened */ 49 LP_OPEN, /* device is open */ 50 LP_BUSY, /* busy with data output */ 51 LP_ASLEEP, /* waiting for output completion */ 52 }; 53 54 /* Bit masks for Centronics status + handshake lines */ 55 enum hsk_lines { 56 CPI_RESET = 0x01, /* PB0 */ 57 CPI_STROBE = 0x08, /* PC3 */ 58 CPI_BUSY = 0x40, /* PC0 */ 59 CPI_SELECT = 0x20, /* PB5 */ 60 CPI_FAULT = 0x02, /* PB1 */ 61 CPI_PAPER_EMPTY = 0x02, /* PC1 */ 62 CPI_ACK = 0x04 /* PC2 */ 63 }; 64 65 struct cpi_softc { 66 struct device sc_dev; 67 68 nubus_slot sc_slot; /* Nubus slot number */ 69 char cardname[CPI_CARD_NAME_LEN]; 70 71 bus_addr_t sc_basepa; /* base physical address */ 72 bus_space_tag_t sc_bst; 73 bus_space_handle_t sc_bsh; 74 75 ulong sc_intcount; /* Hard interrupts */ 76 ulong sc_bytestoport; /* Bytes written to port */ 77 78 struct callout sc_wakeupchan; 79 80 #define CPI_BUFSIZE 0x0800 81 char *sc_printbuf; /* Driver's print buffer */ 82 size_t sc_bufbytes; /* # of bytes in buffer */ 83 u_char *sc_cp; /* Next byte to send */ 84 85 u_char sc_lpstate; 86 }; 87 88 #endif /* CPI_NUBUSVAR_H */ 89