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comedi/drivers/dt3000.c
Data Translation DT3000 series driver
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 1999 David A. Schleef <ds@schleef.org>
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: dt3000
Description: Data Translation DT3000 series
Author: ds
Devices: [Data Translation] DT3001 (dt3000), DT3001-PGL, DT3002, DT3003,
DT3003-PGL, DT3004, DT3005, DT3004-200
Updated: Mon, 14 Apr 2008 15:41:24 +0100
Status: works
Configuration Options:
[0] - PCI bus of device (optional)
[1] - PCI slot of device (optional)
If bus/slot is not specified, the first supported
PCI device found will be used.
There is code to support AI commands, but it may not work.
AO commands are not supported.
*/
/*
The DT3000 series is Data Translation's attempt to make a PCI
data acquisition board. The design of this series is very nice,
since each board has an on-board DSP (Texas Instruments TMS320C52).
However, a few details are a little annoying. The boards lack
bus-mastering DMA, which eliminates them from serious work.
They also are not capable of autocalibration, which is a common
feature in modern hardware. The default firmware is pretty bad,
making it nearly impossible to write an RT compatible driver.
It would make an interesting project to write a decent firmware
for these boards.
Data Translation originally wanted an NDA for the documentation
for the 3k series. However, if you ask nicely, they might send
you the docs without one, also.
*/
#define DEBUG 1
#include <linux/interrupt.h>
#include "../comedidev.h"
#include <linux/delay.h>
#include "comedi_pci.h"
#define PCI_VENDOR_ID_DT 0x1116
static const struct comedi_lrange range_dt3000_ai = { 4, {
RANGE(-10, 10),
RANGE(-5, 5),
RANGE(-2.5, 2.5),
RANGE(-1.25, 1.25)
}
};
static const struct comedi_lrange range_dt3000_ai_pgl = { 4, {
RANGE(-10, 10),
RANGE(-1, 1),
RANGE(-0.1, 0.1),
RANGE(-0.02, 0.02)
}
};
struct dt3k_boardtype {
const char *name;
unsigned int device_id;
int adchan;
int adbits;
int ai_speed;
const struct comedi_lrange *adrange;
int dachan;
int dabits;
};
static const struct dt3k_boardtype dt3k_boardtypes[] = {
{.name = "dt3001",
.device_id = 0x22,
.adchan = 16,
.adbits = 12,
.adrange = &range_dt3000_ai,
.ai_speed = 3000,
.dachan = 2,
.dabits = 12,
},
{.name = "dt3001-pgl",
.device_id = 0x27,
.adchan = 16,
.adbits = 12,
.adrange = &range_dt3000_ai_pgl,
.ai_speed = 3000,
.dachan = 2,
.dabits = 12,
},
{.name = "dt3002",
.device_id = 0x23,
.adchan = 32,
.adbits = 12,
.adrange = &range_dt3000_ai,
.ai_speed = 3000,
.dachan = 0,
.dabits = 0,
},
{.name = "dt3003",
.device_id = 0x24,
.adchan = 64,
.adbits = 12,
.adrange = &range_dt3000_ai,
.ai_speed = 3000,
.dachan = 2,
.dabits = 12,
},
{.name = "dt3003-pgl",
.device_id = 0x28,
.adchan = 64,
.adbits = 12,
.adrange = &range_dt3000_ai_pgl,
.ai_speed = 3000,
.dachan = 2,
.dabits = 12,
},
{.name = "dt3004",
.device_id = 0x25,
.adchan = 16,
.adbits = 16,
.adrange = &range_dt3000_ai,
.ai_speed = 10000,
.dachan = 2,
.dabits = 12,
},
{.name = "dt3005", /* a.k.a. 3004-200 */
.device_id = 0x26,
.adchan = 16,
.adbits = 16,
.adrange = &range_dt3000_ai,
.ai_speed = 5000,
.dachan = 2,
.dabits = 12,
},
};
#define n_dt3k_boards sizeof(dt3k_boardtypes)/sizeof(struct dt3k_boardtype)
#define this_board ((const struct dt3k_boardtype *)dev->board_ptr)
static DEFINE_PCI_DEVICE_TABLE(dt3k_pci_table) = {
{
PCI_VENDOR_ID_DT, 0x0022, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
PCI_VENDOR_ID_DT, 0x0027, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
PCI_VENDOR_ID_DT, 0x0023, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
PCI_VENDOR_ID_DT, 0x0024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
PCI_VENDOR_ID_DT, 0x0028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
PCI_VENDOR_ID_DT, 0x0025, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
PCI_VENDOR_ID_DT, 0x0026, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
0}
};
MODULE_DEVICE_TABLE(pci, dt3k_pci_table);
#define DT3000_SIZE (4*0x1000)
/* dual-ported RAM location definitions */
#define DPR_DAC_buffer (4*0x000)
#define DPR_ADC_buffer (4*0x800)
#define DPR_Command (4*0xfd3)
#define DPR_SubSys (4*0xfd3)
#define DPR_Encode (4*0xfd4)
#define DPR_Params(a) (4*(0xfd5+(a)))
#define DPR_Tick_Reg_Lo (4*0xff5)
#define DPR_Tick_Reg_Hi (4*0xff6)
#define DPR_DA_Buf_Front (4*0xff7)
#define DPR_DA_Buf_Rear (4*0xff8)
#define DPR_AD_Buf_Front (4*0xff9)
#define DPR_AD_Buf_Rear (4*0xffa)
#define DPR_Int_Mask (4*0xffb)
#define DPR_Intr_Flag (4*0xffc)
#define DPR_Response_Mbx (4*0xffe)
#define DPR_Command_Mbx (4*0xfff)
#define AI_FIFO_DEPTH 2003
#define AO_FIFO_DEPTH 2048
/* command list */
#define CMD_GETBRDINFO 0
#define CMD_CONFIG 1
#define CMD_GETCONFIG 2
#define CMD_START 3
#define CMD_STOP 4
#define CMD_READSINGLE 5
#define CMD_WRITESINGLE 6
#define CMD_CALCCLOCK 7
#define CMD_READEVENTS 8
#define CMD_WRITECTCTRL 16
#define CMD_READCTCTRL 17
#define CMD_WRITECT 18
#define CMD_READCT 19
#define CMD_WRITEDATA 32
#define CMD_READDATA 33
#define CMD_WRITEIO 34
#define CMD_READIO 35
#define CMD_WRITECODE 36
#define CMD_READCODE 37
#define CMD_EXECUTE 38
#define CMD_HALT 48
#define SUBS_AI 0
#define SUBS_AO 1
#define SUBS_DIN 2
#define SUBS_DOUT 3
#define SUBS_MEM 4
#define SUBS_CT 5
/* interrupt flags */
#define DT3000_CMDONE 0x80
#define DT3000_CTDONE 0x40
#define DT3000_DAHWERR 0x20
#define DT3000_DASWERR 0x10
#define DT3000_DAEMPTY 0x08
#define DT3000_ADHWERR 0x04
#define DT3000_ADSWERR 0x02
#define DT3000_ADFULL 0x01
#define DT3000_COMPLETION_MASK 0xff00
#define DT3000_COMMAND_MASK 0x00ff
#define DT3000_NOTPROCESSED 0x0000
#define DT3000_NOERROR 0x5500
#define DT3000_ERROR 0xaa00
#define DT3000_NOTSUPPORTED 0xff00
#define DT3000_EXTERNAL_CLOCK 1
#define DT3000_RISING_EDGE 2
#define TMODE_MASK 0x1c
#define DT3000_AD_TRIG_INTERNAL (0<<2)
#define DT3000_AD_TRIG_EXTERNAL (1<<2)
#define DT3000_AD_RETRIG_INTERNAL (2<<2)
#define DT3000_AD_RETRIG_EXTERNAL (3<<2)
#define DT3000_AD_EXTRETRIG (4<<2)
#define DT3000_CHANNEL_MODE_SE 0
#define DT3000_CHANNEL_MODE_DI 1
struct dt3k_private {
struct pci_dev *pci_dev;
resource_size_t phys_addr;
void *io_addr;
unsigned int lock;
unsigned int ao_readback[2];
unsigned int ai_front;
unsigned int ai_rear;
};
#define devpriv ((struct dt3k_private *)dev->private)
static int dt3000_attach(struct comedi_device *dev,
struct comedi_devconfig *it);
static int dt3000_detach(struct comedi_device *dev);
static struct comedi_driver driver_dt3000 = {
.driver_name = "dt3000",
.module = THIS_MODULE,
.attach = dt3000_attach,
.detach = dt3000_detach,
};
COMEDI_PCI_INITCLEANUP(driver_dt3000, dt3k_pci_table);
static void dt3k_ai_empty_fifo(struct comedi_device *dev,
struct comedi_subdevice *s);
static int dt3k_ns_to_timer(unsigned int timer_base, unsigned int *arg,
unsigned int round_mode);
static int dt3k_ai_cancel(struct comedi_device *dev,
struct comedi_subdevice *s);
#ifdef DEBUG
static void debug_intr_flags(unsigned int flags);
#endif
#define TIMEOUT 100
static int dt3k_send_cmd(struct comedi_device *dev, unsigned int cmd)
{
int i;
unsigned int status = 0;
writew(cmd, devpriv->io_addr + DPR_Command_Mbx);
for (i = 0; i < TIMEOUT; i++) {
status = readw(devpriv->io_addr + DPR_Command_Mbx);
if ((status & DT3000_COMPLETION_MASK) != DT3000_NOTPROCESSED)
break;
udelay(1);
}
if ((status & DT3000_COMPLETION_MASK) == DT3000_NOERROR) {
return 0;
}
printk("dt3k_send_cmd() timeout/error status=0x%04x\n", status);
return -ETIME;
}
static unsigned int dt3k_readsingle(struct comedi_device *dev,
unsigned int subsys, unsigned int chan,
unsigned int gain)
{
writew(subsys, devpriv->io_addr + DPR_SubSys);
writew(chan, devpriv->io_addr + DPR_Params(0));
writew(gain, devpriv->io_addr + DPR_Params(1));
dt3k_send_cmd(dev, CMD_READSINGLE);
return readw(devpriv->io_addr + DPR_Params(2));
}
static void dt3k_writesingle(struct comedi_device *dev, unsigned int subsys,
unsigned int chan, unsigned int data)
{
writew(subsys, devpriv->io_addr + DPR_SubSys);
writew(chan, devpriv->io_addr + DPR_Params(0));
writew(0, devpriv->io_addr + DPR_Params(1));
writew(data, devpriv->io_addr + DPR_Params(2));
dt3k_send_cmd(dev, CMD_WRITESINGLE);
}
static int debug_n_ints = 0;
/* FIXME! Assumes shared interrupt is for this card. */
/* What's this debug_n_ints stuff? Obviously needs some work... */
static irqreturn_t dt3k_interrupt(int irq, void *d)
{
struct comedi_device *dev = d;
struct comedi_subdevice *s;
unsigned int status;
if (!dev->attached) {
return IRQ_NONE;
}
s = dev->subdevices + 0;
status = readw(devpriv->io_addr + DPR_Intr_Flag);
#ifdef DEBUG
debug_intr_flags(status);
#endif
if (status & DT3000_ADFULL) {
dt3k_ai_empty_fifo(dev, s);
s->async->events |= COMEDI_CB_BLOCK;
}
if (status & (DT3000_ADSWERR | DT3000_ADHWERR)) {
s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
}
debug_n_ints++;
if (debug_n_ints >= 10) {
dt3k_ai_cancel(dev, s);
s->async->events |= COMEDI_CB_EOA;
}
comedi_event(dev, s);
return IRQ_HANDLED;
}
#ifdef DEBUG
static char *intr_flags[] = {
"AdFull", "AdSwError", "AdHwError", "DaEmpty",
"DaSwError", "DaHwError", "CtDone", "CmDone",
};
static void debug_intr_flags(unsigned int flags)
{
int i;
printk("dt3k: intr_flags:");
for (i = 0; i < 8; i++) {
if (flags & (1 << i)) {
printk(" %s", intr_flags[i]);
}
}
printk("\n");
}
#endif
static void dt3k_ai_empty_fifo(struct comedi_device *dev,
struct comedi_subdevice *s)
{
int front;
int rear;
int count;
int i;
short data;
front = readw(devpriv->io_addr + DPR_AD_Buf_Front);
count = front - devpriv->ai_front;
if (count < 0)
count += AI_FIFO_DEPTH;
printk("reading %d samples\n", count);
rear = devpriv->ai_rear;
for (i = 0; i < count; i++) {
data = readw(devpriv->io_addr + DPR_ADC_buffer + rear);
comedi_buf_put(s->async, data);
rear++;
if (rear >= AI_FIFO_DEPTH)
rear = 0;
}
devpriv->ai_rear = rear;
writew(rear, devpriv->io_addr + DPR_AD_Buf_Rear);
}
static int dt3k_ai_cmdtest(struct comedi_device *dev,
struct comedi_subdevice *s, struct comedi_cmd *cmd)
{
int err = 0;
int tmp;
/* step 1: make sure trigger sources are trivially valid */
tmp = cmd->start_src;
cmd->start_src &= TRIG_NOW;
if (!cmd->start_src || tmp != cmd->start_src)
err++;
tmp = cmd->scan_begin_src;
cmd->scan_begin_src &= TRIG_TIMER;
if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
err++;
tmp = cmd->convert_src;
cmd->convert_src &= TRIG_TIMER;
if (!cmd->convert_src || tmp != cmd->convert_src)
err++;
tmp = cmd->scan_end_src;
cmd->scan_end_src &= TRIG_COUNT;
if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
err++;
tmp = cmd->stop_src;
cmd->stop_src &= TRIG_COUNT;
if (!cmd->stop_src || tmp != cmd->stop_src)
err++;
if (err)
return 1;
/* step 2: make sure trigger sources are unique and mutually compatible */
if (err)
return 2;
/* step 3: make sure arguments are trivially compatible */
if (cmd->start_arg != 0) {
cmd->start_arg = 0;
err++;
}
if (cmd->scan_begin_src == TRIG_TIMER) {
if (cmd->scan_begin_arg < this_board->ai_speed) {
cmd->scan_begin_arg = this_board->ai_speed;
err++;
}
if (cmd->scan_begin_arg > 100 * 16 * 65535) {
cmd->scan_begin_arg = 100 * 16 * 65535;
err++;
}
} else {
/* not supported */
}
if (cmd->convert_src == TRIG_TIMER) {
if (cmd->convert_arg < this_board->ai_speed) {
cmd->convert_arg = this_board->ai_speed;
err++;
}
if (cmd->convert_arg > 50 * 16 * 65535) {
cmd->convert_arg = 50 * 16 * 65535;
err++;
}
} else {
/* not supported */
}
if (cmd->scan_end_arg != cmd->chanlist_len) {
cmd->scan_end_arg = cmd->chanlist_len;
err++;
}
if (cmd->stop_src == TRIG_COUNT) {
if (cmd->stop_arg > 0x00ffffff) {
cmd->stop_arg = 0x00ffffff;
err++;
}
} else {
/* TRIG_NONE */
if (cmd->stop_arg != 0) {
cmd->stop_arg = 0;
err++;
}
}
if (err)
return 3;
/* step 4: fix up any arguments */
if (cmd->scan_begin_src == TRIG_TIMER) {
tmp = cmd->scan_begin_arg;
dt3k_ns_to_timer(100, &cmd->scan_begin_arg,
cmd->flags & TRIG_ROUND_MASK);
if (tmp != cmd->scan_begin_arg)
err++;
} else {
/* not supported */
}
if (cmd->convert_src == TRIG_TIMER) {
tmp = cmd->convert_arg;
dt3k_ns_to_timer(50, &cmd->convert_arg,
cmd->flags & TRIG_ROUND_MASK);
if (tmp != cmd->convert_arg)
err++;
if (cmd->scan_begin_src == TRIG_TIMER &&
cmd->scan_begin_arg <
cmd->convert_arg * cmd->scan_end_arg) {
cmd->scan_begin_arg =
cmd->convert_arg * cmd->scan_end_arg;
err++;
}
} else {
/* not supported */
}
if (err)
return 4;
return 0;
}
static int dt3k_ns_to_timer(unsigned int timer_base, unsigned int *nanosec,
unsigned int round_mode)
{
int divider, base, prescale;
/* This function needs improvment */
/* Don't know if divider==0 works. */
for (prescale = 0; prescale < 16; prescale++) {
base = timer_base * (prescale + 1);
switch (round_mode) {
case TRIG_ROUND_NEAREST:
default:
divider = (*nanosec + base / 2) / base;
break;
case TRIG_ROUND_DOWN:
divider = (*nanosec) / base;
break;
case TRIG_ROUND_UP:
divider = (*nanosec) / base;
break;
}
if (divider < 65536) {
*nanosec = divider * base;
return (prescale << 16) | (divider);
}
}
prescale = 15;
base = timer_base * (1 << prescale);
divider = 65535;
*nanosec = divider * base;
return (prescale << 16) | (divider);
}
static int dt3k_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
{
struct comedi_cmd *cmd = &s->async->cmd;
int i;
unsigned int chan, range, aref;
unsigned int divider;
unsigned int tscandiv;
int ret;
unsigned int mode;
printk("dt3k_ai_cmd:\n");
for (i = 0; i < cmd->chanlist_len; i++) {
chan = CR_CHAN(cmd->chanlist[i]);
range = CR_RANGE(cmd->chanlist[i]);
writew((range << 6) | chan,
devpriv->io_addr + DPR_ADC_buffer + i);
}
aref = CR_AREF(cmd->chanlist[0]);
writew(cmd->scan_end_arg, devpriv->io_addr + DPR_Params(0));
printk("param[0]=0x%04x\n", cmd->scan_end_arg);
if (cmd->convert_src == TRIG_TIMER) {
divider = dt3k_ns_to_timer(50, &cmd->convert_arg,
cmd->flags & TRIG_ROUND_MASK);
writew((divider >> 16), devpriv->io_addr + DPR_Params(1));
printk("param[1]=0x%04x\n", divider >> 16);
writew((divider & 0xffff), devpriv->io_addr + DPR_Params(2));
printk("param[2]=0x%04x\n", divider & 0xffff);
} else {
/* not supported */
}
if (cmd->scan_begin_src == TRIG_TIMER) {
tscandiv = dt3k_ns_to_timer(100, &cmd->scan_begin_arg,
cmd->flags & TRIG_ROUND_MASK);
writew((tscandiv >> 16), devpriv->io_addr + DPR_Params(3));
printk("param[3]=0x%04x\n", tscandiv >> 16);
writew((tscandiv & 0xffff), devpriv->io_addr + DPR_Params(4));
printk("param[4]=0x%04x\n", tscandiv & 0xffff);
} else {
/* not supported */
}
mode = DT3000_AD_RETRIG_INTERNAL | 0 | 0;
writew(mode, devpriv->io_addr + DPR_Params(5));
printk("param[5]=0x%04x\n", mode);
writew(aref == AREF_DIFF, devpriv->io_addr + DPR_Params(6));
printk("param[6]=0x%04x\n", aref == AREF_DIFF);
writew(AI_FIFO_DEPTH / 2, devpriv->io_addr + DPR_Params(7));
printk("param[7]=0x%04x\n", AI_FIFO_DEPTH / 2);
writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
ret = dt3k_send_cmd(dev, CMD_CONFIG);
writew(DT3000_ADFULL | DT3000_ADSWERR | DT3000_ADHWERR,
devpriv->io_addr + DPR_Int_Mask);
debug_n_ints = 0;
writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
ret = dt3k_send_cmd(dev, CMD_START);
return 0;
}
static int dt3k_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
{
int ret;
writew(SUBS_AI, devpriv->io_addr + DPR_SubSys);
ret = dt3k_send_cmd(dev, CMD_STOP);
writew(0, devpriv->io_addr + DPR_Int_Mask);
return 0;
}
static int dt3k_ai_insn(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int i;
unsigned int chan, gain, aref;
chan = CR_CHAN(insn->chanspec);
gain = CR_RANGE(insn->chanspec);
/* XXX docs don't explain how to select aref */
aref = CR_AREF(insn->chanspec);
for (i = 0; i < insn->n; i++) {
data[i] = dt3k_readsingle(dev, SUBS_AI, chan, gain);
}
return i;
}
static int dt3k_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int i;
unsigned int chan;
chan = CR_CHAN(insn->chanspec);
for (i = 0; i < insn->n; i++) {
dt3k_writesingle(dev, SUBS_AO, chan, data[i]);
devpriv->ao_readback[chan] = data[i];
}
return i;
}
static int dt3k_ao_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int i;
unsigned int chan;
chan = CR_CHAN(insn->chanspec);
for (i = 0; i < insn->n; i++) {
data[i] = devpriv->ao_readback[chan];
}
return i;
}
static void dt3k_dio_config(struct comedi_device *dev, int bits)
{
/* XXX */
writew(SUBS_DOUT, devpriv->io_addr + DPR_SubSys);
writew(bits, devpriv->io_addr + DPR_Params(0));
#if 0
/* don't know */
writew(0, devpriv->io_addr + DPR_Params(1));
writew(0, devpriv->io_addr + DPR_Params(2));
#endif
dt3k_send_cmd(dev, CMD_CONFIG);
}
static int dt3k_dio_insn_config(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
int mask;
mask = (CR_CHAN(insn->chanspec) < 4) ? 0x0f : 0xf0;
switch (data[0]) {
case INSN_CONFIG_DIO_OUTPUT:
s->io_bits |= mask;
break;
case INSN_CONFIG_DIO_INPUT:
s->io_bits &= ~mask;
break;
case INSN_CONFIG_DIO_QUERY:
data[1] =
(s->
io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT :
COMEDI_INPUT;
return insn->n;
break;
default:
return -EINVAL;
break;
}
mask = (s->io_bits & 0x01) | ((s->io_bits & 0x10) >> 3);
dt3k_dio_config(dev, mask);
return insn->n;
}
static int dt3k_dio_insn_bits(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
if (insn->n != 2)
return -EINVAL;
if (data[0]) {
s->state &= ~data[0];
s->state |= data[1] & data[0];
dt3k_writesingle(dev, SUBS_DOUT, 0, s->state);
}
data[1] = dt3k_readsingle(dev, SUBS_DIN, 0, 0);
return 2;
}
static int dt3k_mem_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
unsigned int addr = CR_CHAN(insn->chanspec);
int i;
for (i = 0; i < insn->n; i++) {
writew(SUBS_MEM, devpriv->io_addr + DPR_SubSys);
writew(addr, devpriv->io_addr + DPR_Params(0));
writew(1, devpriv->io_addr + DPR_Params(1));
dt3k_send_cmd(dev, CMD_READCODE);
data[i] = readw(devpriv->io_addr + DPR_Params(2));
}
return i;
}
static int dt_pci_probe(struct comedi_device *dev, int bus, int slot);
static int dt3000_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
struct comedi_subdevice *s;
int bus, slot;
int ret = 0;
printk("dt3000:");
bus = it->options[0];
slot = it->options[1];
ret = alloc_private(dev, sizeof(struct dt3k_private));
if (ret < 0)
return ret;
ret = dt_pci_probe(dev, bus, slot);
if (ret < 0)
return ret;
if (ret == 0) {
printk(" no DT board found\n");
return -ENODEV;
}
dev->board_name = this_board->name;
if (request_irq(devpriv->pci_dev->irq, dt3k_interrupt, IRQF_SHARED,
"dt3000", dev)) {
printk(" unable to allocate IRQ %u\n", devpriv->pci_dev->irq);
return -EINVAL;
}
dev->irq = devpriv->pci_dev->irq;
ret = alloc_subdevices(dev, 4);
if (ret < 0)
return ret;
s = dev->subdevices;
dev->read_subdev = s;
/* ai subdevice */
s->type = COMEDI_SUBD_AI;
s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
s->n_chan = this_board->adchan;
s->insn_read = dt3k_ai_insn;
s->maxdata = (1 << this_board->adbits) - 1;
s->len_chanlist = 512;
s->range_table = &range_dt3000_ai; /* XXX */
s->do_cmd = dt3k_ai_cmd;
s->do_cmdtest = dt3k_ai_cmdtest;
s->cancel = dt3k_ai_cancel;
s++;
/* ao subsystem */
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE;
s->n_chan = 2;
s->insn_read = dt3k_ao_insn_read;
s->insn_write = dt3k_ao_insn;
s->maxdata = (1 << this_board->dabits) - 1;
s->len_chanlist = 1;
s->range_table = &range_bipolar10;
s++;
/* dio subsystem */
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
s->n_chan = 8;
s->insn_config = dt3k_dio_insn_config;
s->insn_bits = dt3k_dio_insn_bits;
s->maxdata = 1;
s->len_chanlist = 8;
s->range_table = &range_digital;
s++;
/* mem subsystem */
s->type = COMEDI_SUBD_MEMORY;
s->subdev_flags = SDF_READABLE;
s->n_chan = 0x1000;
s->insn_read = dt3k_mem_insn_read;
s->maxdata = 0xff;
s->len_chanlist = 1;
s->range_table = &range_unknown;
#if 0
s++;
/* proc subsystem */
s->type = COMEDI_SUBD_PROC;
#endif
return 0;
}
static int dt3000_detach(struct comedi_device *dev)
{
if (dev->irq)
free_irq(dev->irq, dev);
if (devpriv) {
if (devpriv->pci_dev) {
if (devpriv->phys_addr) {
comedi_pci_disable(devpriv->pci_dev);
}
pci_dev_put(devpriv->pci_dev);
}
if (devpriv->io_addr)
iounmap(devpriv->io_addr);
}
/* XXX */
return 0;
}
static struct pci_dev *dt_pci_find_device(struct pci_dev *from, int *board);
static int setup_pci(struct comedi_device *dev);
static int dt_pci_probe(struct comedi_device *dev, int bus, int slot)
{
int board;
int ret;
struct pci_dev *pcidev;
pcidev = NULL;
while ((pcidev = dt_pci_find_device(pcidev, &board)) != NULL) {
if ((bus == 0 && slot == 0) ||
(pcidev->bus->number == bus &&
PCI_SLOT(pcidev->devfn) == slot)) {
break;
}
}
devpriv->pci_dev = pcidev;
if (board >= 0)
dev->board_ptr = dt3k_boardtypes + board;
if (!devpriv->pci_dev)
return 0;
ret = setup_pci(dev);
if (ret < 0)
return ret;
return 1;
}
static int setup_pci(struct comedi_device *dev)
{
resource_size_t addr;
int ret;
ret = comedi_pci_enable(devpriv->pci_dev, "dt3000");
if (ret < 0)
return ret;
addr = pci_resource_start(devpriv->pci_dev, 0);
devpriv->phys_addr = addr;
devpriv->io_addr = ioremap(devpriv->phys_addr, DT3000_SIZE);
if (!devpriv->io_addr)
return -ENOMEM;
#if DEBUG
printk("0x%08llx mapped to %p, ",
(unsigned long long)devpriv->phys_addr, devpriv->io_addr);
#endif
return 0;
}
static struct pci_dev *dt_pci_find_device(struct pci_dev *from, int *board)
{
int i;
for (from = pci_get_device(PCI_VENDOR_ID_DT, PCI_ANY_ID, from);
from != NULL;
from = pci_get_device(PCI_VENDOR_ID_DT, PCI_ANY_ID, from)) {
for (i = 0; i < n_dt3k_boards; i++) {
if (from->device == dt3k_boardtypes[i].device_id) {
*board = i;
return from;
}
}
printk
("unknown Data Translation PCI device found with device_id=0x%04x\n",
from->device);
}
*board = -1;
return from;
}
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