ii_pci20kc.c

最新rtlinux内核源码

/*
 *	ii_pci20kc.c
 *	driver for Intelligent Instruments PCI-20001C carrier board
 *	and modules
 *
 *	Copyright (C) 2000 Markus Kempf <[e-mail]>
 *	with suggestions from David Schleef   
 *			16.06.2000	
 *
 *	Linux device driver for COMEDI
 *	Intelligent Instrumentation
 *	PCI-20001 C-2A Carrier Board
 *	PCI-20341 M-1A 16-Bit analog input module
 *				- differential
 *				- range (-5V - +5V)
 *				- 16 bit
 *	PCI-20006 M-2 16-Bit analog output module
 *				- ranges (-10V - +10V) (0V - +10V) (-5V - +5V)
 *				- 16 bit
 *	
 *	only ONE PCI-20341 module possible
 * 	only ONE PCI-20006 module possible
 *	no extern trigger implemented
 *
 *	NOT WORKING (but soon) only 4 on-board differential channels supported
 *	NOT WORKING (but soon) only ONE di-port and ONE do-port supported instead of 4 digital ports
 *	di-port == Port 0
 *	do-port == Port 1
 *
 *	The state of this driver is only a starting point for a complete
 *	COMEDI-driver. The final driver should support all features of the 
 *	carrier board and modules.
 *
 *	The test configuration:
 *
 *	kernel 2.2.14 with RTAI v1.2  and patch-2.2.14rthal2
 *	COMEDI 0.7.45
 *	COMEDILIB 0.7.9
 *
 */
/*
Driver: ii_pci20kc.o
Description: Intelligent Instruments PCI-20001C carrier board
Author: Markus Kempf <[e-mail]>
Devices: [Intelligent Instrumentation] PCI-20001C (ii_pci20kc)
Status: works

Supports the PCI-20001 C-2a Carrier board, and could probably support
the other carrier boards with small modifications.  Modules supported
are:
	PCI-20006 M-2 16-bit analog output module
	PCI-20341 M-1A 16-bit analog input module

Options:
  0   Board base address
  1   IRQ
  2   first option for module 1
  3   second option for module 1
  4   first option for module 2
  5   second option for module 2
  6   first option for module 3
  7   second option for module 3

options for PCI-20006M:
  first:   Analog output channel 0 range configuration
             0  bipolar 10  (-10V -- +10V)
             1  unipolar 10  (0V -- +10V)
             2  bipolar 5  (-5V -- 5V)
  second:  Analog output channel 1 range configuration

options for PCI-20341M:
  first:   Analog input gain configuration
             0  1
             1  10
             2  100
             3  200
*/

/* XXX needs to use ioremap() for compatibility with 2.4 kernels.  Should also
 * check_mem_region() etc. - fmhess */

#include <linux/comedidev.h>


#define PCI20000_ID			0x1d
#define PCI20341_ID    			0x77
#define PCI20006_ID      		0xe3
#define PCI20xxx_EMPTY_ID		0xff

#define PCI20000_OFFSET 		0x100
#define PCI20000_MODULES		3

#define PCI20000_DIO_0			0x80
#define PCI20000_DIO_1			0x81
#define PCI20000_DIO_2			0xc0
#define PCI20000_DIO_3			0xc1
#define PCI20000_DIO_CONTROL_01		0x83	/* port 0, 1 control */
#define PCI20000_DIO_CONTROL_23		0xc3	/* port 2, 3 control */
#define PCI20000_DIO_BUFFER		0x82	/* buffer direction and enable */
#define PCI20000_DIO_EOC		0xef	/* even port, control output */
#define PCI20000_DIO_OOC		0xfd	/* odd port, control output */
#define PCI20000_DIO_EIC		0x90	/* even port, control input */
#define PCI20000_DIO_OIC		0x82	/* odd port, control input */
#define DIO_CAND			0x12	/* and bit 1, bit 4 of control */
#define DIO_BE				0x01	/* buffer: port enable */
#define DIO_BO				0x04	/* buffer: output */
#define DIO_BI				0x05	/* buffer: input */
#define DIO_PS_0			0x00	/* buffer: port shift 0 */
#define DIO_PS_1			0x01	/* buffer: port shift 1 */
#define DIO_PS_2			0x04	/* buffer: port shift 2 */
#define DIO_PS_3			0x05	/* buffer: port shift 3 */

#define PCI20006_LCHAN0			0x0d
#define PCI20006_STROBE0		0x0b
#define PCI20006_LCHAN1			0x15
#define PCI20006_STROBE1		0x13

#define PCI20341_INIT			0x04	
#define PCI20341_REPMODE		0x00	/* single shot mode */
#define PCI20341_PACER			0x00	/* Hardware Pacer disabled */
#define PCI20341_CHAN_NR		0x04	/* number of input channels */
#define PCI20341_CONFIG_REG		0x10
#define PCI20341_MOD_STATUS		0x01
#define PCI20341_OPT_REG		0x11
#define PCI20341_SET_TIME_REG		0x15
#define PCI20341_LCHAN_ADDR_REG		0x13
#define PCI20341_CHAN_LIST		0x80
#define PCI20341_CC_RESET		0x1b
#define PCI20341_CHAN_RESET		0x19
#define PCI20341_SOFT_PACER		0x04
#define PCI20341_STATUS_REG		0x12
#define PCI20341_LDATA			0x02
#define PCI20341_DAISY_CHAIN		0x20	/* On-board inputs only */
#define PCI20341_MUX			0x04	/* Enable on-board MUX */
#define PCI20341_SCANLIST		0x80	/* Channel/Gain Scan List */



typedef union {
	int iobase;
	struct {
		int iobase;
		comedi_lrange *ao_range_list[2];	/* range of channels of ao module */
		lsampl_t last_data[2];
	}pci20006;
	struct {
		int iobase;
		int timebase;
		int settling_time;
		int ai_gain;
	}pci20341;
} pci20xxx_subdev_private;

typedef struct {
	pci20xxx_subdev_private subdev_private[PCI20000_MODULES];
} pci20xxx_private;

#define devpriv ((pci20xxx_private *)dev->private)
#define CHAN (CR_CHAN(it->chanlist[0]))

static int pci20xxx_attach(comedi_device * dev, comedi_devconfig * it);
static int pci20xxx_detach(comedi_device * dev);

static comedi_driver driver_pci20xxx = {
	driver_name:	"ii_pci20kc",
	module:		THIS_MODULE,
	attach:		pci20xxx_attach,
	detach:		pci20xxx_detach,
};

static int pci20006_init(comedi_device * dev,comedi_subdevice *s,
	int opt0,int opt1);
static int pci20341_init(comedi_device * dev,comedi_subdevice *s,
	int opt0,int opt1);
static int pci20xxx_dio_init(comedi_device * dev,comedi_subdevice *s);

/*
  options[0]	Board base address
  options[1]	IRQ
  options[2]	first option for module 1
  options[3]	second option for module 1
  options[4]	first option for module 2
  options[5]	second option for module 2
  options[6]	first option for module 3
  options[7]	second option for module 3

  options for PCI-20341M:
  first		Analog input gain configuration
		0 == 1
		1 == 10
		2 == 100
		3 == 200

  options for PCI-20006M:
  first		Analog output channel 0 range configuration
		0 == bipolar 10  (-10V -- +10V)
		1 == unipolar 10V  (0V -- +10V)
		2 == bipolar 5V  (-5V -- +5V)
  second	Analog output channel 1 range configuration
		0 == bipolar 10  (-10V -- +10V)
		1 == unipolar 10V  (0V -- +10V)
		2 == bipolar 5V  (-5V -- +5V)
*/
static int pci20xxx_attach(comedi_device * dev, comedi_devconfig * it)
{
	unsigned char i;
	int ret;
	int id;
	comedi_subdevice *s;
	pci20xxx_subdev_private *sdp;

	if ((ret = alloc_subdevices(dev, 1 + PCI20000_MODULES)) < 0)
		return ret;
	if ((ret = alloc_private(dev, sizeof(pci20xxx_private))) < 0)
		return ret;

	dev->iobase = it->options[0];
	dev->board_name = "pci20kc";

	/* Check PCI-20001 C-2A Carrier Board ID */
	if ((readb(dev->iobase) & PCI20000_ID) != PCI20000_ID) {
		printk("comedi%d: ii_pci20kc", dev->minor);
		printk(" PCI-20001 C-2A Carrier Board at base=0x%05x not found !\n", dev->iobase);
		return -EINVAL;
	}
	printk("comedi%d:\n", dev->minor);
	printk("ii_pci20kc: PCI-20001 C-2A at base=0x%05x\n", dev->iobase);

	for (i = 0; i < PCI20000_MODULES; i++) {
		s = dev->subdevices + i;
		id = readb(dev->iobase + (i+1) * PCI20000_OFFSET);
		s->private = devpriv->subdev_private +i;
		sdp = s->private;
		switch(id){
		case PCI20006_ID:
			sdp->pci20006.iobase = dev->iobase + (i+1) * PCI20000_OFFSET;
			pci20006_init(dev,s,it->options[2*i+2],it->options[2*i+3]);
			printk("comedi%d: ii_pci20kc", dev->minor);
			printk(" PCI-20006 module in slot %d \n", i+1);
			break;
		case PCI20341_ID:
			sdp->pci20341.iobase = dev->iobase + (i+1) * PCI20000_OFFSET;
			pci20341_init(dev,s,it->options[2*i+2],it->options[2*i+3]);
			printk("comedi%d: ii_pci20kc", dev->minor);
			printk(" PCI-20341 module in slot %d \n", i+1);
			break;
		default:
			printk("ii_pci20kc: unknown module code 0x%02x in slot %d: module disabled\n",
				id,i);
			/* fall through */
		case PCI20xxx_EMPTY_ID:
			s->type = COMEDI_SUBD_UNUSED;
			break;
		}
	}

	/* initialize pci20xxx_private */
	pci20xxx_dio_init(dev,dev->subdevices + PCI20000_MODULES);

	return 1;
}

static int pci20xxx_detach(comedi_device * dev)
{
	printk("comedi%d: pci20xxx: remove\n", dev->minor);

	return 0;
}

/* pci20006m */

static int pci20006_insn_read(comedi_device * dev, comedi_subdevice * s,
	comedi_insn *insn, lsampl_t *data);
static int pci20006_insn_write(comedi_device * dev, comedi_subdevice * s,
	comedi_insn *insn, lsampl_t *data);

static comedi_lrange *pci20006_range_list[] = {
	&range_bipolar10,
	&range_unipolar10,
	&range_bipolar5,
};

static int pci20006_init(comedi_device * dev,comedi_subdevice *s,
	int opt0,int opt1)
{
	pci20xxx_subdev_private *sdp = s->private;

	if(opt0<0 || opt0>2) opt0=0;
	if(opt1<0 || opt1>2) opt1=0;

	sdp->pci20006.ao_range_list[0] = pci20006_range_list[opt0];
	sdp->pci20006.ao_range_list[1] = pci20006_range_list[opt1];

	/* ao subdevice */
	s->type = COMEDI_SUBD_AO;
	s->subdev_flags = SDF_WRITABLE;
	s->n_chan = 2;
	s->len_chanlist = 2;
	s->insn_read = pci20006_insn_read;
	s->insn_write = pci20006_insn_write;
	s->maxdata = 0xffff;