das08.c

rtlinux-3.2-pre3.tar.bz2 rtlinux3.2-pre3的源代码

/*
    comedi/drivers/das.c
    DAS08 driver

    COMEDI - Linux Control and Measurement Device Interface
    Copyright (C) 2000 David A. Schleef <[e-mail]>

    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.

*****************************************************************

*/
/*
Driver: das08.o
Description: DAS-08 compatible boards
Author: Warren Jasper, ds, Frank Hess
Devices: [ComputerBoards] DAS08 (das08), DAS08-PGM (das08-pgm),
  DAS08-PGH (das08-pgh), DAS08-PGL (das08-pgl), DAS08-AOH (das08-aoh),
  DAS08-AOL (das08-aol), DAS08-AOM (das08-aom), DAS08/JR-AO (das08/jr-ao),
  DAS08/JR-16-AO (das08jr-16-ao), PCI-DAS08 (pci-das08), PCM-DAS08 (pcm-das08),
  PC104-DAS08 (pc104-das08), DAS08/JR/16 (das08jr/16)
Status: works

This is a rewrite of the das08 and das08jr drivers.

Options (for ISA cards):
        [0] - base io address

Options (for pci-das08):
        [0] - bus  (optional)
        [1] = slot (optional)
Use the name 'pci-das08' for the pci-das08, NOT 'das08'.

Options (for pcm-das08):
        NONE

The das08 driver doesn't support asynchronous commands, since
the cheap das08 hardware doesn't really support them (except for
pcm-das08).  The
comedi_rt_timer driver can be used to emulate commands for this
driver.
*/

#include <linux/comedidev.h>

#include <linux/delay.h>
#include <linux/pci.h>

#include "8255.h"

// pcmcia includes
#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
#include <pcmcia/version.h>
#include <pcmcia/cs_types.h>
#include <pcmcia/cs.h>
#include <pcmcia/cistpl.h>
#include <pcmcia/ds.h>
#endif	// CONFIG_PCMCIA

#define PCI_VENDOR_ID_COMPUTERBOARDS 0x1307
#define PCI_DEVICE_ID_PCIDAS08 0x29
#define PCIDAS08_SIZE 0x54

// pci configuration registers
#define INTCSR               0x4c
#define   INTR1_ENABLE         0x1
#define   INTR1_HIGH_POLARITY  0x2
#define   PCI_INTR_ENABLE      0x40
#define   INTR1_EDGE_TRIG      0x100	// requires high polarity
#define CNTRL                0x50
#define   CNTRL_DIR            0x2
#define   CNTRL_INTR           0x4


/*
    cio-das08.pdf

  "das08"

  0	a/d bits 0-3		start 8 bit
  1	a/d bits 4-11		start 12 bit
  2	eoc, ip1-3, irq, mux	op1-4, inte, mux
  3	unused			unused
  4567	8254
  89ab	8255

  requires hard-wiring for async ai

*/

#define DAS08_LSB		0
#define DAS08_MSB		1
#define DAS08_TRIG_12BIT	1
#define DAS08_STATUS		2
#define   DAS08_EOC			(1<<7)
#define   DAS08_IRQ			(1<<3)
#define   DAS08_IP(x)			(((x)>>4)&0x7)
#define DAS08_CONTROL		2
#define   DAS08_MUX_MASK	0x7
#define   DAS08_MUX(x)		((x) & DAS08_MUX_MASK)
#define   DAS08_INTE			(1<<3)
#define   DAS08_DO_MASK		0xf0
#define   DAS08_OP(x)		(((x) << 4) & DAS08_DO_MASK)

/*
    cio-das08jr.pdf

  "das08/jr-ao"

  0	a/d bits 0-3		unused
  1	a/d bits 4-11		start 12 bit
  2	eoc, mux		mux
  3	di			do
  4	unused			ao0_lsb
  5	unused			ao0_msb
  6	unused			ao1_lsb
  7	unused			ao1_msb

*/

#define DAS08JR_DIO		3
#define DAS08JR_AO_LSB(x)	((x)?6:4)
#define DAS08JR_AO_MSB(x)	((x)?7:5)

/*
    cio-das08_aox.pdf

  "das08-aoh"
  "das08-aol"
  "das08-aom"

  0	a/d bits 0-3		start 8 bit
  1	a/d bits 4-11		start 12 bit
  2	eoc, ip1-3, irq, mux	op1-4, inte, mux
  3	mux, gain status	gain control
  4567	8254
  8	unused			ao0_lsb
  9	unused			ao0_msb
  a	unused			ao1_lsb
  b	unused			ao1_msb
  89ab
  cdef	8255
*/

#define DAS08AO_GAIN_CONTROL	3
#define DAS08AO_GAIN_STATUS	3

#define DAS08AO_AO_LSB(x)	((x)?0xa:8)
#define DAS08AO_AO_MSB(x)	((x)?0xb:9)
#define DAS08AO_AO_UPDATE	8

/* gainlist same as _pgx_ below */

static int das08_ai_rinsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
static int das08_di_rbits(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
static int das08_do_wbits(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
static int das08jr_di_rbits(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
static int das08jr_do_wbits(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
static int das08jr_ao_winsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
static int das08ao_ao_winsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);

#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
/*
   A linked list of "instances" of the das08_pcmcia device.  Each actual
   PCMCIA card corresponds to one device instance, and is described
   by one dev_link_t structure (defined in ds.h).

   You may not want to use a linked list for this -- for example, the
   memory card driver uses an array of dev_link_t pointers, where minor
   device numbers are used to derive the corresponding array index.
*/
static dev_link_t *dev_list = NULL;
#endif

static comedi_lrange range_das08_pgl = { 9, {
	BIP_RANGE(10),
	BIP_RANGE(5),
	BIP_RANGE(2.5),
	BIP_RANGE(1.25),
	BIP_RANGE(0.625),
	UNI_RANGE(10),
	UNI_RANGE(5),
	UNI_RANGE(2.5),
	UNI_RANGE(1.25)
}};
static comedi_lrange range_das08_pgh = { 12, {
	BIP_RANGE(10),
	BIP_RANGE(5),
	BIP_RANGE(1),
	BIP_RANGE(0.5),
	BIP_RANGE(0.1),
	BIP_RANGE(0.05),
	BIP_RANGE(0.01),
	BIP_RANGE(0.005),
	UNI_RANGE(10),
	UNI_RANGE(1),
	UNI_RANGE(0.1),
	UNI_RANGE(0.01),
}};
static comedi_lrange range_das08_pgm = { 9, {
	BIP_RANGE(10),
	BIP_RANGE(5),
	BIP_RANGE(0.5),
	BIP_RANGE(0.05),
	BIP_RANGE(0.01),
	UNI_RANGE(10),
	UNI_RANGE(1),
	UNI_RANGE(0.1),
	UNI_RANGE(0.01)
}};/*
    cio-das08jr.pdf

  "das08/jr-ao"

  0	a/d bits 0-3		unused
  1	a/d bits 4-11		start 12 bit
  2	eoc, mux		mux
  3	di			do
  4	unused			ao0_lsb
  5	unused			ao0_msb
  6	unused			ao1_lsb
  7	unused			ao1_msb

*/


enum das08_lrange {das08_pg_none, das08_bipolar5, das08_pgh, das08_pgl, das08_pgm};

static comedi_lrange *das08_ai_lranges[]={
	&range_unknown,
	&range_bipolar5,
	&range_das08_pgh,
	&range_das08_pgl,
	&range_das08_pgm,
};

static int das08_pgh_gainlist[] = { 8, 0, 10, 2, 12, 4, 14, 6, 1, 3, 5, 7 };
static int das08_pgl_gainlist[] = { 8, 0, 2, 4, 6, 1, 3, 5, 7 };
static int das08_pgm_gainlist[] = { 8, 0, 10, 12, 14, 9, 11, 13, 15 };

static int *das08_gainlists[] = {
	NULL,
	NULL,
	das08_pgh_gainlist,
	das08_pgl_gainlist,
	das08_pgm_gainlist,
};

enum das08_bustype {isa, pci, pcmcia, pc104};
// different ways ai data is encoded in first two registers
enum das08_ai_encoding {das08_encode12, das08_encode16, das08_pcm_encode12};

typedef struct das08_board_struct{
	char		*name;
	unsigned int	id;	// id for pci/pcmcia boards
	enum das08_bustype	bustype;
	void		*ai;
	unsigned int	ai_nbits;
	enum das08_lrange	ai_pg;
	enum das08_ai_encoding	ai_encoding;
	void		*ao;
	unsigned int	ao_nbits;
	void		*di;
	void		*do_;
	unsigned int	do_nchan;
	unsigned int	i8255_offset;
	unsigned int	i8254_offset;
	unsigned int	iosize;	// number of ioports used
} das08_board;

static struct das08_board_struct das08_boards[]={
	{
	name:		"das08",		// cio-das08.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pg_none,
	ai_encoding:	das08_encode12,
	ao:		NULL,
	ao_nbits:	12,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	8,
	i8254_offset:	4,
	iosize:	16, // unchecked
	},
	{
	name:		"das08-pgm",		// cio-das08pgx.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pgm,
	ai_encoding:	das08_encode12,
	ao:		NULL,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0,
	i8254_offset:	0x04,
	iosize:	16, // unchecked
	},
	{
	name:		"das08-pgh",		// cio-das08pgx.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pgh,
	ai_encoding:	das08_encode12,
	ao:		NULL,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0,
	i8254_offset:	0x04,
	iosize:	16, // unchecked
	},
	{
	name:		"das08-pgl",		// cio-das08pgx.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pgl,
	ai_encoding:	das08_encode12,
	ao:		NULL,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0,
	i8254_offset:	0x04,
	iosize:	16, // unchecked
	},
	{
	name:		"das08-aoh",		// cio-das08_aox.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pgh,
	ai_encoding:	das08_encode12,
	ao:		das08ao_ao_winsn,	// 8
	ao_nbits:	12,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0x0c,
	i8254_offset:	0x04,
	iosize:	16, // unchecked
	},
	{
	name:		"das08-aol",		// cio-das08_aox.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pgl,
	ai_encoding:	das08_encode12,
	ao:		das08ao_ao_winsn,	// 8
	ao_nbits:	12,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0x0c,
	i8254_offset:	0x04,
	iosize:	16, // unchecked
	},
	{
	name:		"das08-aom",		// cio-das08_aox.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pgm,
	ai_encoding:	das08_encode12,
	ao:		das08ao_ao_winsn,	// 8
	ao_nbits:	12,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0x0c,
	i8254_offset:	0x04,
	iosize:	16, // unchecked
	},
	{
	name:		"das08/jr-ao",		// cio-das08-jr-ao.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pg_none,
	ai_encoding:	das08_encode12,
	ao:		das08jr_ao_winsn,
	ao_nbits:	12,
	di:		das08jr_di_rbits,
	do_:		das08jr_do_wbits,
	do_nchan:	8,
	i8255_offset:	0,
	i8254_offset:	0,
	iosize:	16, // unchecked
	},
	{
	name:		"das08jr-16-ao",	// cio-das08jr-16-ao.pdf
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	16,
	ai_pg:		das08_pg_none,
	ai_encoding:	das08_encode12,
	ao:		das08jr_ao_winsn,
	ao_nbits:	16,
	di:		das08jr_di_rbits,
	do_:		das08jr_do_wbits,
	do_nchan:	8,
	i8255_offset:	0,
	i8254_offset:	0x04,
	iosize:	16, // unchecked
	},
	{
	name:		"pci-das08",
	id:	PCI_DEVICE_ID_PCIDAS08,
	bustype:	pci,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_bipolar5,
	ai_encoding:	das08_encode12,
	ao:		NULL,
	ao_nbits:	0,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0,
	i8254_offset:	4,
	iosize:	8,
	},
#if defined(CONFIG_PCMCIA) || defined(CONFIG_PCMCIA_MODULE)
	{
	name:		"pcm-das08",
	id:	0x0,	// XXX
	bustype:	pcmcia,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_bipolar5,
	ai_encoding:	das08_pcm_encode12,
	ao:		NULL,
	ao_nbits:	0,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	3,
	i8255_offset:	0,
	i8254_offset:	0,
	iosize:	16, // unchecked
	},
#endif // CONFIG_PCMCIA
	{
	name:		"pc104-das08",
	bustype:	pc104,
	ai:		das08_ai_rinsn,
	ai_nbits:	12,
	ai_pg:		das08_pg_none,
	ai_encoding:	das08_encode12,
	ao:		NULL,
	ao_nbits:	0,
	di:		das08_di_rbits,
	do_:		das08_do_wbits,
	do_nchan:	4,
	i8255_offset:	0,
	i8254_offset:	4,
	iosize:	16, // unchecked
	},
#if 0
	{
	name:		"das08/f",
	},
	{
	name:		"das08jr",
	},
#endif
	{
	name:		"das08jr/16",
	bustype:	isa,
	ai:		das08_ai_rinsn,
	ai_nbits:	16,
	ai_pg:		das08_pg_none,
	ai_encoding:	das08_encode16,
	ao:		NULL,
	ao_nbits:	0,
	di:		das08jr_di_rbits,
	do_:		das08jr_do_wbits,
	do_nchan:	8,
	i8255_offset:	0,
	i8254_offset:	0,
	iosize:	16, // unchecked
	},
#if 0