ni_labpc.h revision 8642fc4e2bd5e310eeacc4da8e88746deebf2310 
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
42	/*  1200 has extra registers compared to pc+ */
43	enum labpc_register_layout register_layout;
44	int has_ao;		/*  has analog output true/false */
45	const struct comedi_lrange *ai_range_table;
46	const int *ai_range_code;
47	const int *ai_range_is_unipolar;
48
49	/*  board can auto scan up in ai channels, not just down */
50	unsigned ai_scan_up:1;
51
52	/* uses memory mapped io instead of ioports */
53	unsigned memory_mapped_io:1;
54};
55
56struct labpc_private {
57	struct mite_struct *mite;	/*  for mite chip on pci-1200 */
58	/*  number of data points left to be taken */
59	volatile unsigned long long count;
60	/*  software copy of analog output values */
61	unsigned int ao_value[NUM_AO_CHAN];
62	/*  software copys of bits written to command registers */
63	volatile unsigned int command1_bits;
64	volatile unsigned int command2_bits;
65	volatile unsigned int command3_bits;
66	volatile unsigned int command4_bits;
67	volatile unsigned int command5_bits;
68	volatile unsigned int command6_bits;
69	/*  store last read of board status registers */
70	volatile unsigned int status1_bits;
71	volatile unsigned int status2_bits;
72	/*
73	 * value to load into board's counter a0 (conversion pacing) for timed
74	 * conversions
75	 */
76	unsigned int divisor_a0;
77	/*
78	 * value to load into board's counter b0 (master) for timed conversions
79	 */
80	unsigned int divisor_b0;
81	/*
82	 * value to load into board's counter b1 (scan pacing) for timed
83	 * conversions
84	 */
85	unsigned int divisor_b1;
86	unsigned int dma_chan;	/*  dma channel to use */
87	u16 *dma_buffer;	/*  buffer ai will dma into */
88	/* transfer size in bytes for current transfer */
89	unsigned int dma_transfer_size;
90	/* we are using dma/fifo-half-full/etc. */
91	enum transfer_type current_transfer;
92	/* stores contents of board's eeprom */
93	unsigned int eeprom_data[EEPROM_SIZE];
94	/* stores settings of calibration dacs */
95	unsigned int caldac[16];
96	/*
97	 * function pointers so we can use inb/outb or readb/writeb as
98	 * appropriate
99	 */
100	unsigned int (*read_byte) (unsigned long address);
101	void (*write_byte) (unsigned int byte, unsigned long address);
102};
103
104int labpc_common_attach(struct comedi_device *dev, unsigned long iobase,
105			unsigned int irq, unsigned int dma);
106int labpc_common_detach(struct comedi_device *dev);
107
108extern const int labpc_1200_is_unipolar[];
109extern const int labpc_1200_ai_gain_bits[];
110extern const struct comedi_lrange range_labpc_1200_ai;
111
112#endif /* _NI_LABPC_H */
113