comedi/comedi/drivers/ni_labpc.h

Go to the documentation of this file.

/*
    ni_labpc.h

    Header for ni_labpc.c and ni_labpc_cs.c

    Copyright (C) 2003 Frank Mori Hess <fmhess@users.sourceforge.net>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef _NI_LABPC_H
#define _NI_LABPC_H

#define EEPROM_SIZE     256     // 256 byte eeprom
#define NUM_AO_CHAN     2       // boards have two analog output channels

enum labpc_bustype { isa_bustype, pci_bustype, pcmcia_bustype };
enum labpc_register_layout { labpc_plus_layout, labpc_1200_layout };
enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
                isa_dma_transfer };

typedef struct labpc_board_struct {
        const char *name;
        int device_id;          // device id for pci and pcmcia boards
        int ai_speed;           // maximum input speed in nanoseconds
        enum labpc_bustype bustype;     // ISA/PCI/etc.
        enum labpc_register_layout register_layout;     // 1200 has extra registers compared to pc+
        int has_ao;             // has analog output true/false
        const comedi_lrange *ai_range_table;
        const int *ai_range_code;
        const int *ai_range_is_unipolar;
        unsigned ai_scan_up:1;  // board can auto scan up in ai channels, not just down
        unsigned memory_mapped_io:1;    /* uses memory mapped io instead of ioports */
} labpc_board;

typedef struct {
        struct mite_struct *mite;       // for mite chip on pci-1200
        volatile unsigned long long count;      /* number of data points left to be taken */
        unsigned int ao_value[NUM_AO_CHAN];     // software copy of analog output values
        // software copys of bits written to command registers
        volatile unsigned int command1_bits;
        volatile unsigned int command2_bits;
        volatile unsigned int command3_bits;
        volatile unsigned int command4_bits;
        volatile unsigned int command5_bits;
        volatile unsigned int command6_bits;
        // store last read of board status registers
        volatile unsigned int status1_bits;
        volatile unsigned int status2_bits;
        unsigned int divisor_a0;        /* value to load into board's counter a0 (conversion pacing) for timed conversions */
        unsigned int divisor_b0;        /* value to load into board's counter b0 (master) for timed conversions */
        unsigned int divisor_b1;        /* value to load into board's counter b1 (scan pacing) for timed conversions */
        unsigned int dma_chan;  // dma channel to use
        u16 *dma_buffer;        // buffer ai will dma into
        unsigned int dma_transfer_size; // transfer size in bytes for current transfer
        enum transfer_type current_transfer;    // we are using dma/fifo-half-full/etc.
        unsigned int eeprom_data[EEPROM_SIZE];  // stores contents of board's eeprom
        unsigned int caldac[16];        // stores settings of calibration dacs
        // function pointers so we can use inb/outb or readb/writeb as appropriate
        unsigned int (*read_byte) (unsigned long address);
        void (*write_byte) (unsigned int byte, unsigned long address);
} labpc_private;

int labpc_common_attach(comedi_device * dev, unsigned long iobase,
        unsigned int irq, unsigned int dma);
int labpc_common_detach(comedi_device * dev);

extern const int labpc_1200_is_unipolar[];
extern const int labpc_1200_ai_gain_bits[];
extern const comedi_lrange range_labpc_1200_ai;

#endif /* _NI_LABPC_H */