3 * Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
4 * Project manager: Eric Stolz
9 * Tel: +19(0)7223/9493-0
10 * Fax: +49(0)7223/9493-92
11 * http://www.addi-data.com
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
19 * This program is distributed in the hope that it will be useful, but WITHOUT
20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
25 #include <linux/module.h>
26 #include <linux/pci.h>
27 #include <linux/interrupt.h>
28 #include <linux/slab.h>
30 #include "../comedidev.h"
31 #include "addi_watchdog.h"
32 #include "comedi_fc.h"
35 * PCI bar 1 I/O Register map
37 #define APCI2032_DO_REG 0x00
38 #define APCI2032_INT_CTRL_REG 0x04
39 #define APCI2032_INT_CTRL_VCC_ENA (1 << 0)
40 #define APCI2032_INT_CTRL_CC_ENA (1 << 1)
41 #define APCI2032_INT_STATUS_REG 0x08
42 #define APCI2032_INT_STATUS_VCC (1 << 0)
43 #define APCI2032_INT_STATUS_CC (1 << 1)
44 #define APCI2032_STATUS_REG 0x0c
45 #define APCI2032_STATUS_IRQ (1 << 0)
46 #define APCI2032_WDOG_REG 0x10
48 struct apci2032_int_private {
51 unsigned char enabled_isns;
54 static int apci2032_do_insn_bits(struct comedi_device *dev,
55 struct comedi_subdevice *s,
56 struct comedi_insn *insn,
59 s->state = inl(dev->iobase + APCI2032_DO_REG);
61 if (comedi_dio_update_state(s, data))
62 outl(s->state, dev->iobase + APCI2032_DO_REG);
69 static int apci2032_int_insn_bits(struct comedi_device *dev,
70 struct comedi_subdevice *s,
71 struct comedi_insn *insn,
74 data[1] = inl(dev->iobase + APCI2032_INT_STATUS_REG) & 3;
78 static void apci2032_int_stop(struct comedi_device *dev,
79 struct comedi_subdevice *s)
81 struct apci2032_int_private *subpriv = s->private;
83 subpriv->active = false;
84 subpriv->enabled_isns = 0;
85 outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG);
88 static int apci2032_int_cmdtest(struct comedi_device *dev,
89 struct comedi_subdevice *s,
90 struct comedi_cmd *cmd)
94 /* Step 1 : check if triggers are trivially valid */
96 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
97 err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
98 err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
99 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
100 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
105 /* Step 2a : make sure trigger sources are unique */
106 err |= cfc_check_trigger_is_unique(cmd->stop_src);
108 /* Step 2b : and mutually compatible */
113 /* Step 3: check if arguments are trivially valid */
115 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
116 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
117 err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
118 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
119 if (cmd->stop_src == TRIG_COUNT)
120 err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1);
122 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
127 /* Step 4: fix up any arguments */
129 /* Step 5: check channel list if it exists */
134 static int apci2032_int_cmd(struct comedi_device *dev,
135 struct comedi_subdevice *s)
137 struct comedi_cmd *cmd = &s->async->cmd;
138 struct apci2032_int_private *subpriv = s->private;
139 unsigned char enabled_isns;
144 for (n = 0; n < cmd->chanlist_len; n++)
145 enabled_isns |= 1 << CR_CHAN(cmd->chanlist[n]);
147 spin_lock_irqsave(&subpriv->spinlock, flags);
149 subpriv->enabled_isns = enabled_isns;
150 subpriv->active = true;
151 outl(enabled_isns, dev->iobase + APCI2032_INT_CTRL_REG);
153 spin_unlock_irqrestore(&subpriv->spinlock, flags);
158 static int apci2032_int_cancel(struct comedi_device *dev,
159 struct comedi_subdevice *s)
161 struct apci2032_int_private *subpriv = s->private;
164 spin_lock_irqsave(&subpriv->spinlock, flags);
166 apci2032_int_stop(dev, s);
167 spin_unlock_irqrestore(&subpriv->spinlock, flags);
172 static irqreturn_t apci2032_interrupt(int irq, void *d)
174 struct comedi_device *dev = d;
175 struct comedi_subdevice *s = dev->read_subdev;
176 struct comedi_cmd *cmd = &s->async->cmd;
177 struct apci2032_int_private *subpriv;
183 /* Check if VCC OR CC interrupt has occurred */
184 val = inl(dev->iobase + APCI2032_STATUS_REG) & APCI2032_STATUS_IRQ;
188 subpriv = s->private;
189 spin_lock(&subpriv->spinlock);
191 val = inl(dev->iobase + APCI2032_INT_STATUS_REG) & 3;
192 /* Disable triggered interrupt sources. */
193 outl(~val & 3, dev->iobase + APCI2032_INT_CTRL_REG);
195 * Note: We don't reenable the triggered interrupt sources because they
196 * are level-sensitive, hardware error status interrupt sources and
197 * they'd keep triggering interrupts repeatedly.
200 if (subpriv->active && (val & subpriv->enabled_isns) != 0) {
201 unsigned short bits = 0;
204 /* Bits in scan data correspond to indices in channel list. */
205 for (i = 0; i < cmd->chanlist_len; i++) {
206 unsigned int chan = CR_CHAN(cmd->chanlist[i]);
208 if (val & (1 << chan))
212 comedi_buf_write_samples(s, &bits, 1);
214 if (cmd->stop_src == TRIG_COUNT &&
215 s->async->scans_done >= cmd->stop_arg)
216 s->async->events |= COMEDI_CB_EOA;
219 spin_unlock(&subpriv->spinlock);
221 comedi_handle_events(dev, s);
226 static int apci2032_reset(struct comedi_device *dev)
228 outl(0x0, dev->iobase + APCI2032_DO_REG);
229 outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG);
231 addi_watchdog_reset(dev->iobase + APCI2032_WDOG_REG);
236 static int apci2032_auto_attach(struct comedi_device *dev,
237 unsigned long context_unused)
239 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
240 struct comedi_subdevice *s;
243 ret = comedi_pci_enable(dev);
246 dev->iobase = pci_resource_start(pcidev, 1);
249 if (pcidev->irq > 0) {
250 ret = request_irq(pcidev->irq, apci2032_interrupt,
251 IRQF_SHARED, dev->board_name, dev);
253 dev->irq = pcidev->irq;
256 ret = comedi_alloc_subdevices(dev, 3);
260 /* Initialize the digital output subdevice */
261 s = &dev->subdevices[0];
262 s->type = COMEDI_SUBD_DO;
263 s->subdev_flags = SDF_WRITABLE;
266 s->range_table = &range_digital;
267 s->insn_bits = apci2032_do_insn_bits;
269 /* Initialize the watchdog subdevice */
270 s = &dev->subdevices[1];
271 ret = addi_watchdog_init(s, dev->iobase + APCI2032_WDOG_REG);
275 /* Initialize the interrupt subdevice */
276 s = &dev->subdevices[2];
277 s->type = COMEDI_SUBD_DI;
278 s->subdev_flags = SDF_READABLE;
281 s->range_table = &range_digital;
282 s->insn_bits = apci2032_int_insn_bits;
284 struct apci2032_int_private *subpriv;
286 dev->read_subdev = s;
287 subpriv = kzalloc(sizeof(*subpriv), GFP_KERNEL);
290 spin_lock_init(&subpriv->spinlock);
291 s->private = subpriv;
292 s->subdev_flags = SDF_READABLE | SDF_CMD_READ | SDF_PACKED;
294 s->do_cmdtest = apci2032_int_cmdtest;
295 s->do_cmd = apci2032_int_cmd;
296 s->cancel = apci2032_int_cancel;
302 static void apci2032_detach(struct comedi_device *dev)
306 comedi_pci_detach(dev);
307 if (dev->read_subdev)
308 kfree(dev->read_subdev->private);
311 static struct comedi_driver apci2032_driver = {
312 .driver_name = "addi_apci_2032",
313 .module = THIS_MODULE,
314 .auto_attach = apci2032_auto_attach,
315 .detach = apci2032_detach,
318 static int apci2032_pci_probe(struct pci_dev *dev,
319 const struct pci_device_id *id)
321 return comedi_pci_auto_config(dev, &apci2032_driver, id->driver_data);
324 static const struct pci_device_id apci2032_pci_table[] = {
325 { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1004) },
328 MODULE_DEVICE_TABLE(pci, apci2032_pci_table);
330 static struct pci_driver apci2032_pci_driver = {
331 .name = "addi_apci_2032",
332 .id_table = apci2032_pci_table,
333 .probe = apci2032_pci_probe,
334 .remove = comedi_pci_auto_unconfig,
336 module_comedi_pci_driver(apci2032_driver, apci2032_pci_driver);
338 MODULE_AUTHOR("Comedi http://www.comedi.org");
339 MODULE_DESCRIPTION("ADDI-DATA APCI-2032, 32 channel DO boards");
340 MODULE_LICENSE("GPL");