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.
26 * Description: Generic PCI based 8255 Digital I/O boards
27 * Devices: [ADLink] PCI-7224 (adl_pci-7224), PCI-7248 (adl_pci-7248),
28 * PCI-7296 (adl_pci-7296),
29 * [Measurement Computing] PCI-DIO24 (cb_pci-dio24),
30 * PCI-DIO24H (cb_pci-dio24h), PCI-DIO48H (cb_pci-dio48h),
31 * PCI-DIO96H (cb_pci-dio96h),
32 * [National Instruments] PCI-DIO-96 (ni_pci-dio-96),
33 * PCI-DIO-96B (ni_pci-dio-96b), PXI-6508 (ni_pxi-6508),
34 * PCI-6503 (ni_pci-6503), PCI-6503B (ni_pci-6503b),
35 * PCI-6503X (ni_pci-6503x), PXI-6503 (ni_pxi-6503)
36 * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
37 * Updated: Wed, 12 Sep 2012 11:52:01 -0700
40 * These boards have one or more 8255 digital I/O chips, each of which
41 * is supported as a separate 24-channel DIO subdevice.
43 * Boards with 24 DIO channels (1 DIO subdevice):
45 * PCI-7224, PCI-DIO24, PCI-DIO24H, PCI-6503, PCI-6503B, PCI-6503X,
48 * Boards with 48 DIO channels (2 DIO subdevices):
50 * PCI-7248, PCI-DIO48H
52 * Boards with 96 DIO channels (4 DIO subdevices):
54 * PCI-7296, PCI-DIO96H, PCI-DIO-96, PCI-DIO-96B, PXI-6508
56 * Some of these boards also have an 8254 programmable timer/counter
57 * chip. This chip is not currently supported by this driver.
59 * Interrupt support for these boards is also not currently supported.
61 * Configuration Options: not applicable, uses PCI auto config.
64 #include <linux/module.h>
66 #include "../comedi_pci.h"
70 enum pci_8255_boardid {
76 BOARD_CB_PCIDIO48H_OLD,
77 BOARD_CB_PCIDIO48H_NEW,
88 struct pci_8255_boardinfo {
92 unsigned int has_mite:1;
95 static const struct pci_8255_boardinfo pci_8255_boards[] = {
96 [BOARD_ADLINK_PCI7224] = {
97 .name = "adl_pci-7224",
101 [BOARD_ADLINK_PCI7248] = {
102 .name = "adl_pci-7248",
106 [BOARD_ADLINK_PCI7296] = {
107 .name = "adl_pci-7296",
111 [BOARD_CB_PCIDIO24] = {
112 .name = "cb_pci-dio24",
116 [BOARD_CB_PCIDIO24H] = {
117 .name = "cb_pci-dio24h",
121 [BOARD_CB_PCIDIO48H_OLD] = {
122 .name = "cb_pci-dio48h",
126 [BOARD_CB_PCIDIO48H_NEW] = {
127 .name = "cb_pci-dio48h",
131 [BOARD_CB_PCIDIO96H] = {
132 .name = "cb_pci-dio96h",
136 [BOARD_NI_PCIDIO96] = {
137 .name = "ni_pci-dio-96",
142 [BOARD_NI_PCIDIO96B] = {
143 .name = "ni_pci-dio-96b",
148 [BOARD_NI_PXI6508] = {
149 .name = "ni_pxi-6508",
154 [BOARD_NI_PCI6503] = {
155 .name = "ni_pci-6503",
160 [BOARD_NI_PCI6503B] = {
161 .name = "ni_pci-6503b",
166 [BOARD_NI_PCI6503X] = {
167 .name = "ni_pci-6503x",
172 [BOARD_NI_PXI_6503] = {
173 .name = "ni_pxi-6503",
180 /* ripped from mite.h and mite_setup2() to avoid mite dependency */
181 #define MITE_IODWBSR 0xc0 /* IO Device Window Base Size Register */
182 #define WENAB (1 << 7) /* window enable */
184 static int pci_8255_mite_init(struct pci_dev *pcidev)
186 void __iomem *mite_base;
189 /* ioremap the MITE registers (BAR 0) temporarily */
190 mite_base = pci_ioremap_bar(pcidev, 0);
194 /* set data window to main registers (BAR 1) */
195 main_phys_addr = pci_resource_start(pcidev, 1);
196 writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);
198 /* finished with MITE registers */
203 static int pci_8255_auto_attach(struct comedi_device *dev,
204 unsigned long context)
206 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
207 const struct pci_8255_boardinfo *board = NULL;
208 struct comedi_subdevice *s;
212 if (context < ARRAY_SIZE(pci_8255_boards))
213 board = &pci_8255_boards[context];
216 dev->board_ptr = board;
217 dev->board_name = board->name;
219 ret = comedi_pci_enable(dev);
223 if (board->has_mite) {
224 ret = pci_8255_mite_init(pcidev);
229 if ((pci_resource_flags(pcidev, board->dio_badr) & IORESOURCE_MEM)) {
230 dev->mmio = pci_ioremap_bar(pcidev, board->dio_badr);
234 dev->iobase = pci_resource_start(pcidev, board->dio_badr);
238 * One, two, or four subdevices are setup by this driver depending
239 * on the number of channels provided by the board. Each subdevice
240 * has 24 channels supported by the 8255 module.
242 ret = comedi_alloc_subdevices(dev, board->n_8255);
246 for (i = 0; i < board->n_8255; i++) {
247 s = &dev->subdevices[i];
249 ret = subdev_8255_mm_init(dev, s, NULL, i * I8255_SIZE);
251 ret = subdev_8255_init(dev, s, NULL, i * I8255_SIZE);
259 static struct comedi_driver pci_8255_driver = {
260 .driver_name = "8255_pci",
261 .module = THIS_MODULE,
262 .auto_attach = pci_8255_auto_attach,
263 .detach = comedi_pci_detach,
266 static int pci_8255_pci_probe(struct pci_dev *dev,
267 const struct pci_device_id *id)
269 return comedi_pci_auto_config(dev, &pci_8255_driver, id->driver_data);
272 static const struct pci_device_id pci_8255_pci_table[] = {
273 { PCI_VDEVICE(ADLINK, 0x7224), BOARD_ADLINK_PCI7224 },
274 { PCI_VDEVICE(ADLINK, 0x7248), BOARD_ADLINK_PCI7248 },
275 { PCI_VDEVICE(ADLINK, 0x7296), BOARD_ADLINK_PCI7296 },
276 { PCI_VDEVICE(CB, 0x0028), BOARD_CB_PCIDIO24 },
277 { PCI_VDEVICE(CB, 0x0014), BOARD_CB_PCIDIO24H },
278 { PCI_DEVICE_SUB(PCI_VENDOR_ID_CB, 0x000b, 0x0000, 0x0000),
279 .driver_data = BOARD_CB_PCIDIO48H_OLD },
280 { PCI_DEVICE_SUB(PCI_VENDOR_ID_CB, 0x000b, PCI_VENDOR_ID_CB, 0x000b),
281 .driver_data = BOARD_CB_PCIDIO48H_NEW },
282 { PCI_VDEVICE(CB, 0x0017), BOARD_CB_PCIDIO96H },
283 { PCI_VDEVICE(NI, 0x0160), BOARD_NI_PCIDIO96 },
284 { PCI_VDEVICE(NI, 0x1630), BOARD_NI_PCIDIO96B },
285 { PCI_VDEVICE(NI, 0x13c0), BOARD_NI_PXI6508 },
286 { PCI_VDEVICE(NI, 0x0400), BOARD_NI_PCI6503 },
287 { PCI_VDEVICE(NI, 0x1250), BOARD_NI_PCI6503B },
288 { PCI_VDEVICE(NI, 0x17d0), BOARD_NI_PCI6503X },
289 { PCI_VDEVICE(NI, 0x1800), BOARD_NI_PXI_6503 },
292 MODULE_DEVICE_TABLE(pci, pci_8255_pci_table);
294 static struct pci_driver pci_8255_pci_driver = {
296 .id_table = pci_8255_pci_table,
297 .probe = pci_8255_pci_probe,
298 .remove = comedi_pci_auto_unconfig,
300 module_comedi_pci_driver(pci_8255_driver, pci_8255_pci_driver);
302 MODULE_DESCRIPTION("COMEDI - Generic PCI based 8255 Digital I/O boards");
303 MODULE_AUTHOR("Comedi http://www.comedi.org");
304 MODULE_LICENSE("GPL");