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25#include <linux/module.h>
26#include <linux/interrupt.h>
27#include <linux/slab.h>
28
29#include "../comedi_pci.h"
30#include "addi_watchdog.h"
31
32
33
34
35#define APCI2032_DO_REG 0x00
36#define APCI2032_INT_CTRL_REG 0x04
37#define APCI2032_INT_CTRL_VCC_ENA BIT(0)
38#define APCI2032_INT_CTRL_CC_ENA BIT(1)
39#define APCI2032_INT_STATUS_REG 0x08
40#define APCI2032_INT_STATUS_VCC BIT(0)
41#define APCI2032_INT_STATUS_CC BIT(1)
42#define APCI2032_STATUS_REG 0x0c
43#define APCI2032_STATUS_IRQ BIT(0)
44#define APCI2032_WDOG_REG 0x10
45
46struct apci2032_int_private {
47 spinlock_t spinlock;
48 bool active;
49 unsigned char enabled_isns;
50};
51
52static int apci2032_do_insn_bits(struct comedi_device *dev,
53 struct comedi_subdevice *s,
54 struct comedi_insn *insn,
55 unsigned int *data)
56{
57 s->state = inl(dev->iobase + APCI2032_DO_REG);
58
59 if (comedi_dio_update_state(s, data))
60 outl(s->state, dev->iobase + APCI2032_DO_REG);
61
62 data[1] = s->state;
63
64 return insn->n;
65}
66
67static int apci2032_int_insn_bits(struct comedi_device *dev,
68 struct comedi_subdevice *s,
69 struct comedi_insn *insn,
70 unsigned int *data)
71{
72 data[1] = inl(dev->iobase + APCI2032_INT_STATUS_REG) & 3;
73 return insn->n;
74}
75
76static void apci2032_int_stop(struct comedi_device *dev,
77 struct comedi_subdevice *s)
78{
79 struct apci2032_int_private *subpriv = s->private;
80
81 subpriv->active = false;
82 subpriv->enabled_isns = 0;
83 outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG);
84}
85
86static int apci2032_int_cmdtest(struct comedi_device *dev,
87 struct comedi_subdevice *s,
88 struct comedi_cmd *cmd)
89{
90 int err = 0;
91
92
93
94 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
95 err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
96 err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_NOW);
97 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
98 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
99
100 if (err)
101 return 1;
102
103
104 err |= comedi_check_trigger_is_unique(cmd->stop_src);
105
106
107
108 if (err)
109 return 2;
110
111
112
113 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
114 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
115 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
116 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
117 cmd->chanlist_len);
118 if (cmd->stop_src == TRIG_COUNT)
119 err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
120 else
121 err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
122
123 if (err)
124 return 3;
125
126
127
128
129
130 return 0;
131}
132
133static int apci2032_int_cmd(struct comedi_device *dev,
134 struct comedi_subdevice *s)
135{
136 struct comedi_cmd *cmd = &s->async->cmd;
137 struct apci2032_int_private *subpriv = s->private;
138 unsigned char enabled_isns;
139 unsigned int n;
140 unsigned long flags;
141
142 enabled_isns = 0;
143 for (n = 0; n < cmd->chanlist_len; n++)
144 enabled_isns |= 1 << CR_CHAN(cmd->chanlist[n]);
145
146 spin_lock_irqsave(&subpriv->spinlock, flags);
147
148 subpriv->enabled_isns = enabled_isns;
149 subpriv->active = true;
150 outl(enabled_isns, dev->iobase + APCI2032_INT_CTRL_REG);
151
152 spin_unlock_irqrestore(&subpriv->spinlock, flags);
153
154 return 0;
155}
156
157static int apci2032_int_cancel(struct comedi_device *dev,
158 struct comedi_subdevice *s)
159{
160 struct apci2032_int_private *subpriv = s->private;
161 unsigned long flags;
162
163 spin_lock_irqsave(&subpriv->spinlock, flags);
164 if (subpriv->active)
165 apci2032_int_stop(dev, s);
166 spin_unlock_irqrestore(&subpriv->spinlock, flags);
167
168 return 0;
169}
170
171static irqreturn_t apci2032_interrupt(int irq, void *d)
172{
173 struct comedi_device *dev = d;
174 struct comedi_subdevice *s = dev->read_subdev;
175 struct comedi_cmd *cmd = &s->async->cmd;
176 struct apci2032_int_private *subpriv;
177 unsigned int val;
178
179 if (!dev->attached)
180 return IRQ_NONE;
181
182
183 val = inl(dev->iobase + APCI2032_STATUS_REG) & APCI2032_STATUS_IRQ;
184 if (!val)
185 return IRQ_NONE;
186
187 subpriv = s->private;
188 spin_lock(&subpriv->spinlock);
189
190 val = inl(dev->iobase + APCI2032_INT_STATUS_REG) & 3;
191
192 outl(~val & 3, dev->iobase + APCI2032_INT_CTRL_REG);
193
194
195
196
197
198
199 if (subpriv->active && (val & subpriv->enabled_isns) != 0) {
200 unsigned short bits = 0;
201 int i;
202
203
204 for (i = 0; i < cmd->chanlist_len; i++) {
205 unsigned int chan = CR_CHAN(cmd->chanlist[i]);
206
207 if (val & (1 << chan))
208 bits |= (1 << i);
209 }
210
211 comedi_buf_write_samples(s, &bits, 1);
212
213 if (cmd->stop_src == TRIG_COUNT &&
214 s->async->scans_done >= cmd->stop_arg)
215 s->async->events |= COMEDI_CB_EOA;
216 }
217
218 spin_unlock(&subpriv->spinlock);
219
220 comedi_handle_events(dev, s);
221
222 return IRQ_HANDLED;
223}
224
225static int apci2032_reset(struct comedi_device *dev)
226{
227 outl(0x0, dev->iobase + APCI2032_DO_REG);
228 outl(0x0, dev->iobase + APCI2032_INT_CTRL_REG);
229
230 addi_watchdog_reset(dev->iobase + APCI2032_WDOG_REG);
231
232 return 0;
233}
234
235static int apci2032_auto_attach(struct comedi_device *dev,
236 unsigned long context_unused)
237{
238 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
239 struct comedi_subdevice *s;
240 int ret;
241
242 ret = comedi_pci_enable(dev);
243 if (ret)
244 return ret;
245 dev->iobase = pci_resource_start(pcidev, 1);
246 apci2032_reset(dev);
247
248 if (pcidev->irq > 0) {
249 ret = request_irq(pcidev->irq, apci2032_interrupt,
250 IRQF_SHARED, dev->board_name, dev);
251 if (ret == 0)
252 dev->irq = pcidev->irq;
253 }
254
255 ret = comedi_alloc_subdevices(dev, 3);
256 if (ret)
257 return ret;
258
259
260 s = &dev->subdevices[0];
261 s->type = COMEDI_SUBD_DO;
262 s->subdev_flags = SDF_WRITABLE;
263 s->n_chan = 32;
264 s->maxdata = 1;
265 s->range_table = &range_digital;
266 s->insn_bits = apci2032_do_insn_bits;
267
268
269 s = &dev->subdevices[1];
270 ret = addi_watchdog_init(s, dev->iobase + APCI2032_WDOG_REG);
271 if (ret)
272 return ret;
273
274
275 s = &dev->subdevices[2];
276 s->type = COMEDI_SUBD_DI;
277 s->subdev_flags = SDF_READABLE;
278 s->n_chan = 2;
279 s->maxdata = 1;
280 s->range_table = &range_digital;
281 s->insn_bits = apci2032_int_insn_bits;
282 if (dev->irq) {
283 struct apci2032_int_private *subpriv;
284
285 dev->read_subdev = s;
286 subpriv = kzalloc(sizeof(*subpriv), GFP_KERNEL);
287 if (!subpriv)
288 return -ENOMEM;
289 spin_lock_init(&subpriv->spinlock);
290 s->private = subpriv;
291 s->subdev_flags = SDF_READABLE | SDF_CMD_READ | SDF_PACKED;
292 s->len_chanlist = 2;
293 s->do_cmdtest = apci2032_int_cmdtest;
294 s->do_cmd = apci2032_int_cmd;
295 s->cancel = apci2032_int_cancel;
296 }
297
298 return 0;
299}
300
301static void apci2032_detach(struct comedi_device *dev)
302{
303 if (dev->iobase)
304 apci2032_reset(dev);
305 comedi_pci_detach(dev);
306 if (dev->read_subdev)
307 kfree(dev->read_subdev->private);
308}
309
310static struct comedi_driver apci2032_driver = {
311 .driver_name = "addi_apci_2032",
312 .module = THIS_MODULE,
313 .auto_attach = apci2032_auto_attach,
314 .detach = apci2032_detach,
315};
316
317static int apci2032_pci_probe(struct pci_dev *dev,
318 const struct pci_device_id *id)
319{
320 return comedi_pci_auto_config(dev, &apci2032_driver, id->driver_data);
321}
322
323static const struct pci_device_id apci2032_pci_table[] = {
324 { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1004) },
325 { 0 }
326};
327MODULE_DEVICE_TABLE(pci, apci2032_pci_table);
328
329static struct pci_driver apci2032_pci_driver = {
330 .name = "addi_apci_2032",
331 .id_table = apci2032_pci_table,
332 .probe = apci2032_pci_probe,
333 .remove = comedi_pci_auto_unconfig,
334};
335module_comedi_pci_driver(apci2032_driver, apci2032_pci_driver);
336
337MODULE_AUTHOR("Comedi http://www.comedi.org");
338MODULE_DESCRIPTION("ADDI-DATA APCI-2032, 32 channel DO boards");
339MODULE_LICENSE("GPL");
340
