2 * COMEDI driver for generic PCI based 8255 digital i/o boards
3 * Copyright (C) 2012 H Hartley Sweeten <hsweeten@visionengravers.com>
5 * Based on the tested adl_pci7296 driver written by:
6 * Jon Grierson <jd@renko.co.uk>
7 * and the experimental cb_pcidio driver written by:
10 * COMEDI - Linux Control and Measurement Device Interface
11 * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 Description: Generic PCI based 8255 Digital I/O boards
31 Devices: (ADLink) PCI-7224 [adl_pci-7224] - 24 channels
32 (ADLink) PCI-7248 [adl_pci-7248] - 48 channels
33 (ADLink) PCI-7296 [adl_pci-7296] - 96 channels
34 (Measurement Computing) PCI-DIO24 [cb_pci-dio24] - 24 channels
35 (Measurement Computing) PCI-DIO24H [cb_pci-dio24h] - 24 channels
36 (Measurement Computing) PCI-DIO48H [cb_pci-dio48h] - 48 channels
37 (Measurement Computing) PCI-DIO96H [cb_pci-dio96h] - 96 channels
38 (National Instruments) PCI-DIO-96 [ni_pci-dio-96] - 96 channels
39 (National Instruments) PCI-DIO-96B [ni_pci-dio-96b] - 96 channels
40 (National Instruments) PXI-6508 [ni_pxi-6508] - 96 channels
41 (National Instruments) PCI-6503 [ni_pci-6503] - 24 channels
42 (National Instruments) PCI-6503B [ni_pci-6503b] - 24 channels
43 (National Instruments) PCI-6503X [ni_pci-6503x] - 24 channels
44 (National Instruments) PXI-6503 [ni_pxi-6503] - 24 channels
45 Author: H Hartley Sweeten <hsweeten@visionengravers.com>
46 Updated: Wed, 12 Sep 2012 11:52:01 -0700
49 Some of these boards also have an 8254 programmable timer/counter
50 chip. This chip is not currently supported by this driver.
52 Interrupt support for these boards is also not currently supported.
54 Configuration Options: not applicable, uses PCI auto config
57 #include "../comedidev.h"
62 * PCI Device ID's supported by this driver
64 #define PCI_DEVICE_ID_ADLINK_PCI7224 0x7224
65 #define PCI_DEVICE_ID_ADLINK_PCI7248 0x7248
66 #define PCI_DEVICE_ID_ADLINK_PCI7296 0x7296
68 #define PCI_DEVICE_ID_CB_PCIDIO48H 0x000b
69 #define PCI_DEVICE_ID_CB_PCIDIO24H 0x0014
70 #define PCI_DEVICE_ID_CB_PCIDIO96H 0x0017
71 #define PCI_DEVICE_ID_CB_PCIDIO24 0x0028
73 #define PCI_DEVICE_ID_NI_PCIDIO96 0x0160
74 #define PCI_DEVICE_ID_NI_PCI6503 0x0400
75 #define PCI_DEVICE_ID_NI_PCI6503B 0x1250
76 #define PCI_DEVICE_ID_NI_PXI6508 0x13c0
77 #define PCI_DEVICE_ID_NI_PCIDIO96B 0x1630
78 #define PCI_DEVICE_ID_NI_PCI6503X 0x17d0
79 #define PCI_DEVICE_ID_NI_PXI_6503 0x1800
81 struct pci_8255_boardinfo {
83 unsigned short vendor;
84 unsigned short device;
90 static const struct pci_8255_boardinfo pci_8255_boards[] = {
92 .name = "adl_pci-7224",
93 .vendor = PCI_VENDOR_ID_ADLINK,
94 .device = PCI_DEVICE_ID_ADLINK_PCI7224,
98 .name = "adl_pci-7248",
99 .vendor = PCI_VENDOR_ID_ADLINK,
100 .device = PCI_DEVICE_ID_ADLINK_PCI7248,
104 .name = "adl_pci-7296",
105 .vendor = PCI_VENDOR_ID_ADLINK,
106 .device = PCI_DEVICE_ID_ADLINK_PCI7296,
110 .name = "cb_pci-dio24",
111 .vendor = PCI_VENDOR_ID_CB,
112 .device = PCI_DEVICE_ID_CB_PCIDIO24,
116 .name = "cb_pci-dio24h",
117 .vendor = PCI_VENDOR_ID_CB,
118 .device = PCI_DEVICE_ID_CB_PCIDIO24H,
122 .name = "cb_pci-dio48h",
123 .vendor = PCI_VENDOR_ID_CB,
124 .device = PCI_DEVICE_ID_CB_PCIDIO48H,
128 .name = "cb_pci-dio96h",
129 .vendor = PCI_VENDOR_ID_CB,
130 .device = PCI_DEVICE_ID_CB_PCIDIO96H,
134 .name = "ni_pci-dio-96",
135 .vendor = PCI_VENDOR_ID_NI,
136 .device = PCI_DEVICE_ID_NI_PCIDIO96,
141 .name = "ni_pci-dio-96b",
142 .vendor = PCI_VENDOR_ID_NI,
143 .device = PCI_DEVICE_ID_NI_PCIDIO96B,
148 .name = "ni_pxi-6508",
149 .vendor = PCI_VENDOR_ID_NI,
150 .device = PCI_DEVICE_ID_NI_PXI6508,
155 .name = "ni_pci-6503",
156 .vendor = PCI_VENDOR_ID_NI,
157 .device = PCI_DEVICE_ID_NI_PCI6503,
162 .name = "ni_pci-6503b",
163 .vendor = PCI_VENDOR_ID_NI,
164 .device = PCI_DEVICE_ID_NI_PCI6503B,
169 .name = "ni_pci-6503x",
170 .vendor = PCI_VENDOR_ID_NI,
171 .device = PCI_DEVICE_ID_NI_PCI6503X,
176 .name = "ni_pxi-6503",
177 .vendor = PCI_VENDOR_ID_NI,
178 .device = PCI_DEVICE_ID_NI_PXI_6503,
185 struct pci_8255_private {
186 void __iomem *mmio_base;
189 static int pci_8255_mmio(int dir, int port, int data, unsigned long iobase)
191 void __iomem *mmio_base = (void __iomem *)iobase;
194 writeb(data, mmio_base + port);
197 return readb(mmio_base + port);
201 static const void *pci_8255_find_boardinfo(struct comedi_device *dev,
202 struct pci_dev *pcidev)
204 const struct pci_8255_boardinfo *board;
207 for (i = 0; i < ARRAY_SIZE(pci_8255_boards); i++) {
208 board = &pci_8255_boards[i];
209 if (pcidev->vendor == board->vendor &&
210 pcidev->device == board->device)
216 static int __devinit pci_8255_auto_attach(struct comedi_device *dev,
217 unsigned long context_unused)
219 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
220 const struct pci_8255_boardinfo *board;
221 struct pci_8255_private *devpriv;
222 struct comedi_subdevice *s;
223 resource_size_t iobase;
228 board = pci_8255_find_boardinfo(dev, pcidev);
231 dev->board_ptr = board;
232 dev->board_name = board->name;
234 devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
237 dev->private = devpriv;
239 ret = comedi_pci_enable(pcidev, dev->board_name);
242 iobase = pci_resource_start(pcidev, board->dio_badr);
243 len = pci_resource_len(pcidev, board->dio_badr);
245 if (board->is_mmio) {
246 devpriv->mmio_base = ioremap(iobase, len);
247 if (!devpriv->mmio_base)
250 dev->iobase = iobase;
253 * One, two, or four subdevices are setup by this driver depending
254 * on the number of channels provided by the board. Each subdevice
255 * has 24 channels supported by the 8255 module.
257 ret = comedi_alloc_subdevices(dev, board->n_8255);
261 for (i = 0; i < board->n_8255; i++) {
262 s = &dev->subdevices[i];
263 if (board->is_mmio) {
264 iobase = (unsigned long)(devpriv->mmio_base + (i * 4));
265 ret = subdev_8255_init(dev, s, pci_8255_mmio, iobase);
267 iobase = dev->iobase + (i * 4);
268 ret = subdev_8255_init(dev, s, NULL, iobase);
274 dev_info(dev->class_dev, "%s attached (%d digital i/o channels)\n",
275 dev->board_name, board->n_8255 * 24);
280 static void pci_8255_detach(struct comedi_device *dev)
282 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
283 const struct pci_8255_boardinfo *board = comedi_board(dev);
284 struct pci_8255_private *devpriv = dev->private;
285 struct comedi_subdevice *s;
288 if (!board || !devpriv)
290 if (dev->subdevices) {
291 for (i = 0; i < board->n_8255; i++) {
292 s = &dev->subdevices[i];
293 subdev_8255_cleanup(dev, s);
297 if (devpriv->mmio_base)
298 iounmap(devpriv->mmio_base);
300 comedi_pci_disable(pcidev);
304 static struct comedi_driver pci_8255_driver = {
305 .driver_name = "8255_pci",
306 .module = THIS_MODULE,
307 .auto_attach = pci_8255_auto_attach,
308 .detach = pci_8255_detach,
311 static int __devinit pci_8255_pci_probe(struct pci_dev *dev,
312 const struct pci_device_id *ent)
314 return comedi_pci_auto_config(dev, &pci_8255_driver);
317 static void __devexit pci_8255_pci_remove(struct pci_dev *dev)
319 comedi_pci_auto_unconfig(dev);
322 static DEFINE_PCI_DEVICE_TABLE(pci_8255_pci_table) = {
323 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_ADLINK_PCI7224) },
324 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_ADLINK_PCI7248) },
325 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_ADLINK_PCI7296) },
326 { PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO24) },
327 { PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO24H) },
328 { PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO48H) },
329 { PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO96H) },
330 { PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCIDIO96) },
331 { PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCIDIO96B) },
332 { PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PXI6508) },
333 { PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCI6503) },
334 { PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCI6503B) },
335 { PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCI6503X) },
336 { PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PXI_6503) },
339 MODULE_DEVICE_TABLE(pci, pci_8255_pci_table);
341 static struct pci_driver pci_8255_pci_driver = {
343 .id_table = pci_8255_pci_table,
344 .probe = pci_8255_pci_probe,
345 .remove = pci_8255_pci_remove,
347 module_comedi_pci_driver(pci_8255_driver, pci_8255_pci_driver);
349 MODULE_DESCRIPTION("COMEDI - Generic PCI based 8255 Digital I/O boards");
350 MODULE_AUTHOR("Comedi http://www.comedi.org");
351 MODULE_LICENSE("GPL");