ni_labpc.h revision 0a85b6f0ab0d2edb0d41b32697111ce0e4f43496 
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};
35
36struct labpc_board_struct {
37	const char *name;
38	int device_id;		/*  device id for pci and pcmcia boards */
39	int ai_speed;		/*  maximum input speed in nanoseconds */
40	enum labpc_bustype bustype;	/*  ISA/PCI/etc. */
41	enum labpc_register_layout register_layout;	/*  1200 has extra registers compared to pc+ */
42	int has_ao;		/*  has analog output true/false */
43	const struct comedi_lrange *ai_range_table;
44	const int *ai_range_code;
45	const int *ai_range_is_unipolar;
46	unsigned ai_scan_up:1;	/*  board can auto scan up in ai channels, not just down */
47	unsigned memory_mapped_io:1;	/* uses memory mapped io instead of ioports */
48};
49
50struct labpc_private {
51	struct mite_struct *mite;	/*  for mite chip on pci-1200 */
52	volatile unsigned long long count;	/* number of data points left to be taken */
53	unsigned int ao_value[NUM_AO_CHAN];	/*  software copy of analog output values */
54	/*  software copys of bits written to command registers */
55	volatile unsigned int command1_bits;
56	volatile unsigned int command2_bits;
57	volatile unsigned int command3_bits;
58	volatile unsigned int command4_bits;
59	volatile unsigned int command5_bits;
60	volatile unsigned int command6_bits;
61	/*  store last read of board status registers */
62	volatile unsigned int status1_bits;
63	volatile unsigned int status2_bits;
64	unsigned int divisor_a0;	/* value to load into board's counter a0 (conversion pacing) for timed conversions */
65	unsigned int divisor_b0;	/* value to load into board's counter b0 (master) for timed conversions */
66	unsigned int divisor_b1;	/* value to load into board's counter b1 (scan pacing) for timed conversions */
67	unsigned int dma_chan;	/*  dma channel to use */
68	u16 *dma_buffer;	/*  buffer ai will dma into */
69	unsigned int dma_transfer_size;	/*  transfer size in bytes for current transfer */
70	enum transfer_type current_transfer;	/*  we are using dma/fifo-half-full/etc. */
71	unsigned int eeprom_data[EEPROM_SIZE];	/*  stores contents of board's eeprom */
72	unsigned int caldac[16];	/*  stores settings of calibration dacs */
73	/*  function pointers so we can use inb/outb or readb/writeb as appropriate */
74	unsigned int (*read_byte) (unsigned long address);
75	void (*write_byte) (unsigned int byte, unsigned long address);
76};
77
78int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
79			unsigned int irq, unsigned int dma);
80int labpc_common_detach(struct comedi_device *dev);
81
82extern const int labpc_1200_is_unipolar[];
83extern const int labpc_1200_ai_gain_bits[];
84extern const struct comedi_lrange range_labpc_1200_ai;
85
86#endif /* _NI_LABPC_H */
87