1/* 2 comedi/drivers/adl_pci6208.c 3 4 Hardware driver for ADLink 6208 series cards: 5 card | voltage output | current output 6 -------------+-------------------+--------------- 7 PCI-6208V | 8 channels | - 8 PCI-6216V | 16 channels | - 9 PCI-6208A | 8 channels | 8 channels 10 11 COMEDI - Linux Control and Measurement Device Interface 12 Copyright (C) 2000 David A. Schleef <ds@schleef.org> 13 14 This program is free software; you can redistribute it and/or modify 15 it under the terms of the GNU General Public License as published by 16 the Free Software Foundation; either version 2 of the License, or 17 (at your option) any later version. 18 19 This program is distributed in the hope that it will be useful, 20 but WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 GNU General Public License for more details. 23 24 You should have received a copy of the GNU General Public License 25 along with this program; if not, write to the Free Software 26 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27*/ 28/* 29Driver: adl_pci6208 30Description: ADLink PCI-6208A 31Devices: [ADLink] PCI-6208A (adl_pci6208) 32Author: nsyeow <nsyeow@pd.jaring.my> 33Updated: Fri, 30 Jan 2004 14:44:27 +0800 34Status: untested 35 36Configuration Options: 37 none 38 39References: 40 - ni_660x.c 41 - adl_pci9111.c copied the entire pci setup section 42 - adl_pci9118.c 43*/ 44/* 45 * These headers should be followed by a blank line, and any comments 46 * you wish to say about the driver. The comment area is the place 47 * to put any known bugs, limitations, unsupported features, supported 48 * command triggers, whether or not commands are supported on particular 49 * subdevices, etc. 50 * 51 * Somewhere in the comment should be information about configuration 52 * options that are used with comedi_config. 53 */ 54#include "../comedidev.h" 55#include "comedi_pci.h" 56 57#define PCI6208_DRIVER_NAME "adl_pci6208" 58 59/* Board descriptions */ 60struct pci6208_board { 61 const char *name; 62 unsigned short dev_id; /* `lspci` will show you this */ 63 int ao_chans; 64 /* int ao_bits; */ 65}; 66 67static const struct pci6208_board pci6208_boards[] = { 68 /*{ 69 .name = "pci6208v", 70 .dev_id = 0x6208, // not sure 71 .ao_chans = 8 72 // , .ao_bits = 16 73 }, 74 { 75 .name = "pci6216v", 76 .dev_id = 0x6208, // not sure 77 .ao_chans = 16 78 // , .ao_bits = 16 79 }, */ 80 { 81 .name = "pci6208a", 82 .dev_id = 0x6208, 83 .ao_chans = 8 84 /* , .ao_bits = 16 */ 85 } 86}; 87 88/* This is used by modprobe to translate PCI IDs to drivers. Should 89 * only be used for PCI and ISA-PnP devices */ 90static DEFINE_PCI_DEVICE_TABLE(pci6208_pci_table) = { 91 /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ 92 /* { PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */ 93 { PCI_DEVICE(PCI_VENDOR_ID_ADLINK, 0x6208) }, 94 { 0 } 95}; 96 97MODULE_DEVICE_TABLE(pci, pci6208_pci_table); 98 99/* Will be initialized in pci6208_find device(). */ 100#define thisboard ((const struct pci6208_board *)dev->board_ptr) 101 102struct pci6208_private { 103 int data; 104 struct pci_dev *pci_dev; /* for a PCI device */ 105 unsigned int ao_readback[2]; /* Used for AO readback */ 106}; 107 108#define devpriv ((struct pci6208_private *)dev->private) 109 110static int pci6208_attach(struct comedi_device *dev, 111 struct comedi_devconfig *it); 112static int pci6208_detach(struct comedi_device *dev); 113 114static struct comedi_driver driver_pci6208 = { 115 .driver_name = PCI6208_DRIVER_NAME, 116 .module = THIS_MODULE, 117 .attach = pci6208_attach, 118 .detach = pci6208_detach, 119}; 120 121static int __devinit driver_pci6208_pci_probe(struct pci_dev *dev, 122 const struct pci_device_id *ent) 123{ 124 return comedi_pci_auto_config(dev, driver_pci6208.driver_name); 125} 126 127static void __devexit driver_pci6208_pci_remove(struct pci_dev *dev) 128{ 129 comedi_pci_auto_unconfig(dev); 130} 131 132static struct pci_driver driver_pci6208_pci_driver = { 133 .id_table = pci6208_pci_table, 134 .probe = &driver_pci6208_pci_probe, 135 .remove = __devexit_p(&driver_pci6208_pci_remove) 136}; 137 138static int __init driver_pci6208_init_module(void) 139{ 140 int retval; 141 142 retval = comedi_driver_register(&driver_pci6208); 143 if (retval < 0) 144 return retval; 145 146 driver_pci6208_pci_driver.name = (char *)driver_pci6208.driver_name; 147 return pci_register_driver(&driver_pci6208_pci_driver); 148} 149 150static void __exit driver_pci6208_cleanup_module(void) 151{ 152 pci_unregister_driver(&driver_pci6208_pci_driver); 153 comedi_driver_unregister(&driver_pci6208); 154} 155 156module_init(driver_pci6208_init_module); 157module_exit(driver_pci6208_cleanup_module); 158 159static int pci6208_find_device(struct comedi_device *dev, int bus, int slot); 160static int 161pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 162 int dev_minor); 163 164/*read/write functions*/ 165static int pci6208_ao_winsn(struct comedi_device *dev, 166 struct comedi_subdevice *s, 167 struct comedi_insn *insn, unsigned int *data); 168static int pci6208_ao_rinsn(struct comedi_device *dev, 169 struct comedi_subdevice *s, 170 struct comedi_insn *insn, unsigned int *data); 171/* static int pci6208_dio_insn_bits (struct comedi_device *dev, 172 * struct comedi_subdevice *s, */ 173/* struct comedi_insn *insn,unsigned int *data); */ 174/* static int pci6208_dio_insn_config(struct comedi_device *dev, 175 * struct comedi_subdevice *s, */ 176/* struct comedi_insn *insn,unsigned int *data); */ 177 178/* 179 * Attach is called by the Comedi core to configure the driver 180 * for a particular board. If you specified a board_name array 181 * in the driver structure, dev->board_ptr contains that 182 * address. 183 */ 184static int pci6208_attach(struct comedi_device *dev, 185 struct comedi_devconfig *it) 186{ 187 struct comedi_subdevice *s; 188 int retval; 189 unsigned long io_base; 190 191 printk(KERN_INFO "comedi%d: pci6208: ", dev->minor); 192 193 retval = alloc_private(dev, sizeof(struct pci6208_private)); 194 if (retval < 0) 195 return retval; 196 197 retval = pci6208_find_device(dev, it->options[0], it->options[1]); 198 if (retval < 0) 199 return retval; 200 201 retval = pci6208_pci_setup(devpriv->pci_dev, &io_base, dev->minor); 202 if (retval < 0) 203 return retval; 204 205 dev->iobase = io_base; 206 dev->board_name = thisboard->name; 207 208/* 209 * Allocate the subdevice structures. alloc_subdevice() is a 210 * convenient macro defined in comedidev.h. 211 */ 212 if (alloc_subdevices(dev, 2) < 0) 213 return -ENOMEM; 214 215 s = dev->subdevices + 0; 216 /* analog output subdevice */ 217 s->type = COMEDI_SUBD_AO; 218 s->subdev_flags = SDF_WRITABLE; /* anything else to add here?? */ 219 s->n_chan = thisboard->ao_chans; 220 s->maxdata = 0xffff; /* 16-bit DAC */ 221 s->range_table = &range_bipolar10; /* this needs to be checked. */ 222 s->insn_write = pci6208_ao_winsn; 223 s->insn_read = pci6208_ao_rinsn; 224 225 /* s=dev->subdevices+1; */ 226 /* digital i/o subdevice */ 227 /* s->type=COMEDI_SUBD_DIO; */ 228 /* s->subdev_flags=SDF_READABLE|SDF_WRITABLE; */ 229 /* s->n_chan=16; */ 230 /* s->maxdata=1; */ 231 /* s->range_table=&range_digital; */ 232 /* s->insn_bits = pci6208_dio_insn_bits; */ 233 /* s->insn_config = pci6208_dio_insn_config; */ 234 235 printk(KERN_INFO "attached\n"); 236 237 return 1; 238} 239 240/* 241 * _detach is called to deconfigure a device. It should deallocate 242 * resources. 243 * This function is also called when _attach() fails, so it should be 244 * careful not to release resources that were not necessarily 245 * allocated by _attach(). dev->private and dev->subdevices are 246 * deallocated automatically by the core. 247 */ 248static int pci6208_detach(struct comedi_device *dev) 249{ 250 printk(KERN_INFO "comedi%d: pci6208: remove\n", dev->minor); 251 252 if (devpriv && devpriv->pci_dev) { 253 if (dev->iobase) 254 comedi_pci_disable(devpriv->pci_dev); 255 pci_dev_put(devpriv->pci_dev); 256 } 257 258 return 0; 259} 260 261static int pci6208_ao_winsn(struct comedi_device *dev, 262 struct comedi_subdevice *s, 263 struct comedi_insn *insn, unsigned int *data) 264{ 265 int i = 0, Data_Read; 266 unsigned short chan = CR_CHAN(insn->chanspec); 267 unsigned long invert = 1 << (16 - 1); 268 unsigned long out_value; 269 /* Writing a list of values to an AO channel is probably not 270 * very useful, but that's how the interface is defined. */ 271 for (i = 0; i < insn->n; i++) { 272 out_value = data[i] ^ invert; 273 /* a typical programming sequence */ 274 do { 275 Data_Read = (inw(dev->iobase) & 1); 276 } while (Data_Read); 277 outw(out_value, dev->iobase + (0x02 * chan)); 278 devpriv->ao_readback[chan] = out_value; 279 } 280 281 /* return the number of samples read/written */ 282 return i; 283} 284 285/* AO subdevices should have a read insn as well as a write insn. 286 * Usually this means copying a value stored in devpriv. */ 287static int pci6208_ao_rinsn(struct comedi_device *dev, 288 struct comedi_subdevice *s, 289 struct comedi_insn *insn, unsigned int *data) 290{ 291 int i; 292 int chan = CR_CHAN(insn->chanspec); 293 294 for (i = 0; i < insn->n; i++) 295 data[i] = devpriv->ao_readback[chan]; 296 297 return i; 298} 299 300/* DIO devices are slightly special. Although it is possible to 301 * implement the insn_read/insn_write interface, it is much more 302 * useful to applications if you implement the insn_bits interface. 303 * This allows packed reading/writing of the DIO channels. The 304 * comedi core can convert between insn_bits and insn_read/write */ 305/* static int pci6208_dio_insn_bits(struct comedi_device *dev, 306 * struct comedi_subdevice *s, */ 307/* struct comedi_insn *insn,unsigned int *data) */ 308/* { */ 309/* if(insn->n!=2)return -EINVAL; */ 310 311 /* The insn data is a mask in data[0] and the new data 312 * in data[1], each channel cooresponding to a bit. */ 313/* if(data[0]){ */ 314/* s->state &= ~data[0]; */ 315/* s->state |= data[0]&data[1]; */ 316 /* Write out the new digital output lines */ 317 /* outw(s->state,dev->iobase + SKEL_DIO); */ 318/* } */ 319 320 /* on return, data[1] contains the value of the digital 321 * input and output lines. */ 322 /* data[1]=inw(dev->iobase + SKEL_DIO); */ 323 /* or we could just return the software copy of the output values if 324 * it was a purely digital output subdevice */ 325 /* data[1]=s->state; */ 326 327/* return 2; */ 328/* } */ 329 330/* static int pci6208_dio_insn_config(struct comedi_device *dev, 331 * struct comedi_subdevice *s, */ 332/* struct comedi_insn *insn,unsigned int *data) */ 333/* { */ 334/* int chan=CR_CHAN(insn->chanspec); */ 335 336 /* The input or output configuration of each digital line is 337 * configured by a special insn_config instruction. chanspec 338 * contains the channel to be changed, and data[0] contains the 339 * value COMEDI_INPUT or COMEDI_OUTPUT. */ 340 341/* if(data[0]==COMEDI_OUTPUT){ */ 342/* s->io_bits |= 1<<chan; */ 343/* }else{ */ 344/* s->io_bits &= ~(1<<chan); */ 345/* } */ 346 /* outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); */ 347 348/* return 1; */ 349/* } */ 350 351static int pci6208_find_device(struct comedi_device *dev, int bus, int slot) 352{ 353 struct pci_dev *pci_dev = NULL; 354 int i; 355 356 for_each_pci_dev(pci_dev) { 357 if (pci_dev->vendor == PCI_VENDOR_ID_ADLINK) { 358 for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) { 359 if (pci6208_boards[i].dev_id == 360 pci_dev->device) { 361 /* 362 * was a particular bus/slot requested? 363 */ 364 if ((bus != 0) || (slot != 0)) { 365 /* 366 * are we on the 367 * wrong bus/slot? 368 */ 369 if (pci_dev->bus->number 370 != bus || 371 PCI_SLOT(pci_dev->devfn) 372 != slot) { 373 continue; 374 } 375 } 376 dev->board_ptr = pci6208_boards + i; 377 goto found; 378 } 379 } 380 } 381 } 382 383 printk(KERN_ERR "comedi%d: no supported board found! " 384 "(req. bus/slot : %d/%d)\n", 385 dev->minor, bus, slot); 386 return -EIO; 387 388found: 389 printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n", 390 dev->minor, 391 pci6208_boards[i].name, 392 pci_dev->bus->number, 393 PCI_SLOT(pci_dev->devfn), 394 PCI_FUNC(pci_dev->devfn), pci_dev->irq); 395 396 /* TODO: Warn about non-tested boards. */ 397 /* switch(board->device_id) */ 398 /* { */ 399 /* }; */ 400 401 devpriv->pci_dev = pci_dev; 402 403 return 0; 404} 405 406static int 407pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 408 int dev_minor) 409{ 410 unsigned long io_base, io_range, lcr_io_base, lcr_io_range; 411 412 /* Enable PCI device and request regions */ 413 if (comedi_pci_enable(pci_dev, PCI6208_DRIVER_NAME) < 0) { 414 printk(KERN_ERR "comedi%d: Failed to enable PCI device " 415 "and request regions\n", 416 dev_minor); 417 return -EIO; 418 } 419 /* Read local configuration register 420 * base address [PCI_BASE_ADDRESS #1]. 421 */ 422 lcr_io_base = pci_resource_start(pci_dev, 1); 423 lcr_io_range = pci_resource_len(pci_dev, 1); 424 425 printk(KERN_INFO "comedi%d: local config registers at address" 426 " 0x%4lx [0x%4lx]\n", 427 dev_minor, lcr_io_base, lcr_io_range); 428 429 /* Read PCI6208 register base address [PCI_BASE_ADDRESS #2]. */ 430 io_base = pci_resource_start(pci_dev, 2); 431 io_range = pci_resource_end(pci_dev, 2) - io_base + 1; 432 433 printk("comedi%d: 6208 registers at address 0x%4lx [0x%4lx]\n", 434 dev_minor, io_base, io_range); 435 436 *io_base_ptr = io_base; 437 /* devpriv->io_range = io_range; */ 438 /* devpriv->is_valid=0; */ 439 /* devpriv->lcr_io_base=lcr_io_base; */ 440 /* devpriv->lcr_io_range=lcr_io_range; */ 441 442 return 0; 443} 444 445MODULE_AUTHOR("Comedi http://www.comedi.org"); 446MODULE_DESCRIPTION("Comedi low-level driver"); 447MODULE_LICENSE("GPL"); 448