ni_labpc.h revision 0a4eb4b6c7c12730254be53d93a67ed2955d5c66 
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    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21
22*/
23
24#ifndef _NI_LABPC_H
25#define _NI_LABPC_H
26
27#define EEPROM_SIZE	256	// 256 byte eeprom
28#define NUM_AO_CHAN	2	// boards have two analog output channels
29
30enum labpc_bustype { isa_bustype, pci_bustype, pcmcia_bustype };
31enum labpc_register_layout { labpc_plus_layout, labpc_1200_layout };
32enum transfer_type { fifo_not_empty_transfer, fifo_half_full_transfer,
33		isa_dma_transfer };
34
35struct labpc_board_struct {
36	const char *name;
37	int device_id;		// device id for pci and pcmcia boards
38	int ai_speed;		// maximum input speed in nanoseconds
39	enum labpc_bustype bustype;	// ISA/PCI/etc.
40	enum labpc_register_layout register_layout;	// 1200 has extra registers compared to pc+
41	int has_ao;		// has analog output true/false
42	const struct comedi_lrange *ai_range_table;
43	const int *ai_range_code;
44	const int *ai_range_is_unipolar;
45	unsigned ai_scan_up:1;	// board can auto scan up in ai channels, not just down
46	unsigned memory_mapped_io:1;	/* uses memory mapped io instead of ioports */
47};
48
49struct labpc_private {
50	struct mite_struct *mite;	// for mite chip on pci-1200
51	volatile unsigned long long count;	/* number of data points left to be taken */
52	unsigned int ao_value[NUM_AO_CHAN];	// software copy of analog output values
53	// software copys of bits written to command registers
54	volatile unsigned int command1_bits;
55	volatile unsigned int command2_bits;
56	volatile unsigned int command3_bits;
57	volatile unsigned int command4_bits;
58	volatile unsigned int command5_bits;
59	volatile unsigned int command6_bits;
60	// store last read of board status registers
61	volatile unsigned int status1_bits;
62	volatile unsigned int status2_bits;
63	unsigned int divisor_a0;	/* value to load into board's counter a0 (conversion pacing) for timed conversions */
64	unsigned int divisor_b0;	/* value to load into board's counter b0 (master) for timed conversions */
65	unsigned int divisor_b1;	/* value to load into board's counter b1 (scan pacing) for timed conversions */
66	unsigned int dma_chan;	// dma channel to use
67	u16 *dma_buffer;	// buffer ai will dma into
68	unsigned int dma_transfer_size;	// transfer size in bytes for current transfer
69	enum transfer_type current_transfer;	// we are using dma/fifo-half-full/etc.
70	unsigned int eeprom_data[EEPROM_SIZE];	// stores contents of board's eeprom
71	unsigned int caldac[16];	// stores settings of calibration dacs
72	// function pointers so we can use inb/outb or readb/writeb as appropriate
73	unsigned int (*read_byte) (unsigned long address);
74	void (*write_byte) (unsigned int byte, unsigned long address);
75};
76
77int labpc_common_attach(struct comedi_device * dev, unsigned long iobase,
78	unsigned int irq, unsigned int dma);
79int labpc_common_detach(struct comedi_device * dev);
80
81extern const int labpc_1200_is_unipolar[];
82extern const int labpc_1200_ai_gain_bits[];
83extern const struct comedi_lrange range_labpc_1200_ai;
84
85#endif /* _NI_LABPC_H */
86