adl_pci6208.c revision 90f703d30dd3e0c16ff80f35e34e511385a05ad5
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 { 94 PCI_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, { 95 0} 96}; 97 98MODULE_DEVICE_TABLE(pci, pci6208_pci_table); 99 100/* Will be initialized in pci6208_find device(). */ 101#define thisboard ((const struct pci6208_board *)dev->board_ptr) 102 103struct pci6208_private { 104 int data; 105 struct pci_dev *pci_dev; /* for a PCI device */ 106 unsigned int ao_readback[2]; /* Used for AO readback */ 107}; 108 109#define devpriv ((struct pci6208_private *)dev->private) 110 111static int pci6208_attach(struct comedi_device *dev, 112 struct comedi_devconfig *it); 113static int pci6208_detach(struct comedi_device *dev); 114 115static struct comedi_driver driver_pci6208 = { 116 .driver_name = PCI6208_DRIVER_NAME, 117 .module = THIS_MODULE, 118 .attach = pci6208_attach, 119 .detach = pci6208_detach, 120}; 121 122COMEDI_PCI_INITCLEANUP(driver_pci6208, pci6208_pci_table); 123 124static int pci6208_find_device(struct comedi_device *dev, int bus, int slot); 125static int 126pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 127 int dev_minor); 128 129/*read/write functions*/ 130static int pci6208_ao_winsn(struct comedi_device *dev, 131 struct comedi_subdevice *s, 132 struct comedi_insn *insn, unsigned int *data); 133static int pci6208_ao_rinsn(struct comedi_device *dev, 134 struct comedi_subdevice *s, 135 struct comedi_insn *insn, unsigned int *data); 136/* static int pci6208_dio_insn_bits (struct comedi_device *dev, 137 * struct comedi_subdevice *s, */ 138/* struct comedi_insn *insn,unsigned int *data); */ 139/* static int pci6208_dio_insn_config(struct comedi_device *dev, 140 * struct comedi_subdevice *s, */ 141/* struct comedi_insn *insn,unsigned int *data); */ 142 143/* 144 * Attach is called by the Comedi core to configure the driver 145 * for a particular board. If you specified a board_name array 146 * in the driver structure, dev->board_ptr contains that 147 * address. 148 */ 149static int pci6208_attach(struct comedi_device *dev, 150 struct comedi_devconfig *it) 151{ 152 struct comedi_subdevice *s; 153 int retval; 154 unsigned long io_base; 155 156 printk(KERN_INFO "comedi%d: pci6208: ", dev->minor); 157 158 retval = alloc_private(dev, sizeof(struct pci6208_private)); 159 if (retval < 0) 160 return retval; 161 162 retval = pci6208_find_device(dev, it->options[0], it->options[1]); 163 if (retval < 0) 164 return retval; 165 166 retval = pci6208_pci_setup(devpriv->pci_dev, &io_base, dev->minor); 167 if (retval < 0) 168 return retval; 169 170 dev->iobase = io_base; 171 dev->board_name = thisboard->name; 172 173/* 174 * Allocate the subdevice structures. alloc_subdevice() is a 175 * convenient macro defined in comedidev.h. 176 */ 177 if (alloc_subdevices(dev, 2) < 0) 178 return -ENOMEM; 179 180 s = dev->subdevices + 0; 181 /* analog output subdevice */ 182 s->type = COMEDI_SUBD_AO; 183 s->subdev_flags = SDF_WRITABLE; /* anything else to add here?? */ 184 s->n_chan = thisboard->ao_chans; 185 s->maxdata = 0xffff; /* 16-bit DAC */ 186 s->range_table = &range_bipolar10; /* this needs to be checked. */ 187 s->insn_write = pci6208_ao_winsn; 188 s->insn_read = pci6208_ao_rinsn; 189 190 /* s=dev->subdevices+1; */ 191 /* digital i/o subdevice */ 192 /* s->type=COMEDI_SUBD_DIO; */ 193 /* s->subdev_flags=SDF_READABLE|SDF_WRITABLE; */ 194 /* s->n_chan=16; */ 195 /* s->maxdata=1; */ 196 /* s->range_table=&range_digital; */ 197 /* s->insn_bits = pci6208_dio_insn_bits; */ 198 /* s->insn_config = pci6208_dio_insn_config; */ 199 200 printk(KERN_INFO "attached\n"); 201 202 return 1; 203} 204 205/* 206 * _detach is called to deconfigure a device. It should deallocate 207 * resources. 208 * This function is also called when _attach() fails, so it should be 209 * careful not to release resources that were not necessarily 210 * allocated by _attach(). dev->private and dev->subdevices are 211 * deallocated automatically by the core. 212 */ 213static int pci6208_detach(struct comedi_device *dev) 214{ 215 printk(KERN_INFO "comedi%d: pci6208: remove\n", dev->minor); 216 217 if (devpriv && devpriv->pci_dev) { 218 if (dev->iobase) 219 comedi_pci_disable(devpriv->pci_dev); 220 pci_dev_put(devpriv->pci_dev); 221 } 222 223 return 0; 224} 225 226static int pci6208_ao_winsn(struct comedi_device *dev, 227 struct comedi_subdevice *s, 228 struct comedi_insn *insn, unsigned int *data) 229{ 230 int i = 0, Data_Read; 231 unsigned short chan = CR_CHAN(insn->chanspec); 232 unsigned long invert = 1 << (16 - 1); 233 unsigned long out_value; 234 /* Writing a list of values to an AO channel is probably not 235 * very useful, but that's how the interface is defined. */ 236 for (i = 0; i < insn->n; i++) { 237 out_value = data[i] ^ invert; 238 /* a typical programming sequence */ 239 do { 240 Data_Read = (inw(dev->iobase) & 1); 241 } while (Data_Read); 242 outw(out_value, dev->iobase + (0x02 * chan)); 243 devpriv->ao_readback[chan] = out_value; 244 } 245 246 /* return the number of samples read/written */ 247 return i; 248} 249 250/* AO subdevices should have a read insn as well as a write insn. 251 * Usually this means copying a value stored in devpriv. */ 252static int pci6208_ao_rinsn(struct comedi_device *dev, 253 struct comedi_subdevice *s, 254 struct comedi_insn *insn, unsigned int *data) 255{ 256 int i; 257 int chan = CR_CHAN(insn->chanspec); 258 259 for (i = 0; i < insn->n; i++) 260 data[i] = devpriv->ao_readback[chan]; 261 262 return i; 263} 264 265/* DIO devices are slightly special. Although it is possible to 266 * implement the insn_read/insn_write interface, it is much more 267 * useful to applications if you implement the insn_bits interface. 268 * This allows packed reading/writing of the DIO channels. The 269 * comedi core can convert between insn_bits and insn_read/write */ 270/* static int pci6208_dio_insn_bits(struct comedi_device *dev, 271 * struct comedi_subdevice *s, */ 272/* struct comedi_insn *insn,unsigned int *data) */ 273/* { */ 274/* if(insn->n!=2)return -EINVAL; */ 275 276 /* The insn data is a mask in data[0] and the new data 277 * in data[1], each channel cooresponding to a bit. */ 278/* if(data[0]){ */ 279/* s->state &= ~data[0]; */ 280/* s->state |= data[0]&data[1]; */ 281 /* Write out the new digital output lines */ 282 /* outw(s->state,dev->iobase + SKEL_DIO); */ 283/* } */ 284 285 /* on return, data[1] contains the value of the digital 286 * input and output lines. */ 287 /* data[1]=inw(dev->iobase + SKEL_DIO); */ 288 /* or we could just return the software copy of the output values if 289 * it was a purely digital output subdevice */ 290 /* data[1]=s->state; */ 291 292/* return 2; */ 293/* } */ 294 295/* static int pci6208_dio_insn_config(struct comedi_device *dev, 296 * struct comedi_subdevice *s, */ 297/* struct comedi_insn *insn,unsigned int *data) */ 298/* { */ 299/* int chan=CR_CHAN(insn->chanspec); */ 300 301 /* The input or output configuration of each digital line is 302 * configured by a special insn_config instruction. chanspec 303 * contains the channel to be changed, and data[0] contains the 304 * value COMEDI_INPUT or COMEDI_OUTPUT. */ 305 306/* if(data[0]==COMEDI_OUTPUT){ */ 307/* s->io_bits |= 1<<chan; */ 308/* }else{ */ 309/* s->io_bits &= ~(1<<chan); */ 310/* } */ 311 /* outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); */ 312 313/* return 1; */ 314/* } */ 315 316static int pci6208_find_device(struct comedi_device *dev, int bus, int slot) 317{ 318 struct pci_dev *pci_dev; 319 int i; 320 321 for (pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); 322 pci_dev != NULL; 323 pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) { 324 if (pci_dev->vendor == PCI_VENDOR_ID_ADLINK) { 325 for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) { 326 if (pci6208_boards[i].dev_id == 327 pci_dev->device) { 328 /* 329 * was a particular bus/slot requested? 330 */ 331 if ((bus != 0) || (slot != 0)) { 332 /* 333 * are we on the 334 * wrong bus/slot? 335 */ 336 if (pci_dev->bus->number 337 != bus || 338 PCI_SLOT(pci_dev->devfn) 339 != slot) { 340 continue; 341 } 342 } 343 dev->board_ptr = pci6208_boards + i; 344 goto found; 345 } 346 } 347 } 348 } 349 350 printk(KERN_ERR "comedi%d: no supported board found! " 351 "(req. bus/slot : %d/%d)\n", 352 dev->minor, bus, slot); 353 return -EIO; 354 355found: 356 printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n", 357 dev->minor, 358 pci6208_boards[i].name, 359 pci_dev->bus->number, 360 PCI_SLOT(pci_dev->devfn), 361 PCI_FUNC(pci_dev->devfn), pci_dev->irq); 362 363 /* TODO: Warn about non-tested boards. */ 364 /* switch(board->device_id) */ 365 /* { */ 366 /* }; */ 367 368 devpriv->pci_dev = pci_dev; 369 370 return 0; 371} 372 373static int 374pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 375 int dev_minor) 376{ 377 unsigned long io_base, io_range, lcr_io_base, lcr_io_range; 378 379 /* Enable PCI device and request regions */ 380 if (comedi_pci_enable(pci_dev, PCI6208_DRIVER_NAME) < 0) { 381 printk(KERN_ERR "comedi%d: Failed to enable PCI device " 382 "and request regions\n", 383 dev_minor); 384 return -EIO; 385 } 386 /* Read local configuration register 387 * base address [PCI_BASE_ADDRESS #1]. 388 */ 389 lcr_io_base = pci_resource_start(pci_dev, 1); 390 lcr_io_range = pci_resource_len(pci_dev, 1); 391 392 printk(KERN_INFO "comedi%d: local config registers at address" 393 " 0x%4lx [0x%4lx]\n", 394 dev_minor, lcr_io_base, lcr_io_range); 395 396 /* Read PCI6208 register base address [PCI_BASE_ADDRESS #2]. */ 397 io_base = pci_resource_start(pci_dev, 2); 398 io_range = pci_resource_end(pci_dev, 2) - io_base + 1; 399 400 printk("comedi%d: 6208 registers at address 0x%4lx [0x%4lx]\n", 401 dev_minor, io_base, io_range); 402 403 *io_base_ptr = io_base; 404 /* devpriv->io_range = io_range; */ 405 /* devpriv->is_valid=0; */ 406 /* devpriv->lcr_io_base=lcr_io_base; */ 407 /* devpriv->lcr_io_range=lcr_io_range; */ 408 409 return 0; 410} 411 412MODULE_AUTHOR("Comedi http://www.comedi.org"); 413MODULE_DESCRIPTION("Comedi low-level driver"); 414MODULE_LICENSE("GPL"); 415