1/* 2 ni_labpc.h 3 4 Header for ni_labpc.c and ni_labpc_cs.c 5 6 Copyright (C) 2003 Frank Mori Hess <fmhess@users.sourceforge.net> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17*/ 18 19#ifndef _NI_LABPC_H 20#define _NI_LABPC_H 21 22#define EEPROM_SIZE 256 /* 256 byte eeprom */ 23#define NUM_AO_CHAN 2 /* boards have two analog output channels */ 24 25enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer, 26 isa_dma_transfer 27}; 28 29struct labpc_boardinfo { 30 const char *name; 31 int ai_speed; /* maximum input speed in ns */ 32 unsigned ai_scan_up:1; /* can auto scan up in ai channels */ 33 unsigned has_ao:1; /* has analog outputs */ 34 unsigned is_labpc1200:1; /* has extra regs compared to pc+ */ 35}; 36 37struct labpc_private { 38 /* number of data points left to be taken */ 39 unsigned long long count; 40 /* software copy of analog output values */ 41 unsigned int ao_value[NUM_AO_CHAN]; 42 /* software copys of bits written to command registers */ 43 unsigned int cmd1; 44 unsigned int cmd2; 45 unsigned int cmd3; 46 unsigned int cmd4; 47 unsigned int cmd5; 48 unsigned int cmd6; 49 /* store last read of board status registers */ 50 unsigned int stat1; 51 unsigned int stat2; 52 /* 53 * value to load into board's counter a0 (conversion pacing) for timed 54 * conversions 55 */ 56 unsigned int divisor_a0; 57 /* 58 * value to load into board's counter b0 (master) for timed conversions 59 */ 60 unsigned int divisor_b0; 61 /* 62 * value to load into board's counter b1 (scan pacing) for timed 63 * conversions 64 */ 65 unsigned int divisor_b1; 66 unsigned int dma_chan; /* dma channel to use */ 67 u16 *dma_buffer; /* buffer ai will dma into */ 68 phys_addr_t dma_addr; 69 /* transfer size in bytes for current transfer */ 70 unsigned int dma_transfer_size; 71 /* we are using dma/fifo-half-full/etc. */ 72 enum transfer_type current_transfer; 73 /* stores contents of board's eeprom */ 74 unsigned int eeprom_data[EEPROM_SIZE]; 75 /* stores settings of calibration dacs */ 76 unsigned int caldac[16]; 77 /* 78 * function pointers so we can use inb/outb or readb/writeb as 79 * appropriate 80 */ 81 unsigned int (*read_byte)(struct comedi_device *, unsigned long reg); 82 void (*write_byte)(struct comedi_device *, 83 unsigned int byte, unsigned long reg); 84}; 85 86int labpc_common_attach(struct comedi_device *dev, 87 unsigned int irq, unsigned long isr_flags); 88 89#endif /* _NI_LABPC_H */ 90