adl_pci6208.c revision 0a85b6f0ab0d2edb0d41b32697111ce0e4f43496
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,struct comedi_subdevice *s, */ 137/* struct comedi_insn *insn,unsigned int *data); */ 138/* static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, */ 139/* struct comedi_insn *insn,unsigned int *data); */ 140 141/* 142 * Attach is called by the Comedi core to configure the driver 143 * for a particular board. If you specified a board_name array 144 * in the driver structure, dev->board_ptr contains that 145 * address. 146 */ 147static int pci6208_attach(struct comedi_device *dev, 148 struct comedi_devconfig *it) 149{ 150 struct comedi_subdevice *s; 151 int retval; 152 unsigned long io_base; 153 154 printk("comedi%d: pci6208: ", dev->minor); 155 156 retval = alloc_private(dev, sizeof(struct pci6208_private)); 157 if (retval < 0) 158 return retval; 159 160 retval = pci6208_find_device(dev, it->options[0], it->options[1]); 161 if (retval < 0) 162 return retval; 163 164 retval = pci6208_pci_setup(devpriv->pci_dev, &io_base, dev->minor); 165 if (retval < 0) 166 return retval; 167 168 dev->iobase = io_base; 169 dev->board_name = thisboard->name; 170 171/* 172 * Allocate the subdevice structures. alloc_subdevice() is a 173 * convenient macro defined in comedidev.h. 174 */ 175 if (alloc_subdevices(dev, 2) < 0) 176 return -ENOMEM; 177 178 s = dev->subdevices + 0; 179 /* analog output subdevice */ 180 s->type = COMEDI_SUBD_AO; 181 s->subdev_flags = SDF_WRITABLE; /* anything else to add here?? */ 182 s->n_chan = thisboard->ao_chans; 183 s->maxdata = 0xffff; /* 16-bit DAC */ 184 s->range_table = &range_bipolar10; /* this needs to be checked. */ 185 s->insn_write = pci6208_ao_winsn; 186 s->insn_read = pci6208_ao_rinsn; 187 188 /* s=dev->subdevices+1; */ 189 /* digital i/o subdevice */ 190 /* s->type=COMEDI_SUBD_DIO; */ 191 /* s->subdev_flags=SDF_READABLE|SDF_WRITABLE; */ 192 /* s->n_chan=16; */ 193 /* s->maxdata=1; */ 194 /* s->range_table=&range_digital; */ 195 /* s->insn_bits = pci6208_dio_insn_bits; */ 196 /* s->insn_config = pci6208_dio_insn_config; */ 197 198 printk("attached\n"); 199 200 return 1; 201} 202 203/* 204 * _detach is called to deconfigure a device. It should deallocate 205 * resources. 206 * This function is also called when _attach() fails, so it should be 207 * careful not to release resources that were not necessarily 208 * allocated by _attach(). dev->private and dev->subdevices are 209 * deallocated automatically by the core. 210 */ 211static int pci6208_detach(struct comedi_device *dev) 212{ 213 printk("comedi%d: pci6208: remove\n", dev->minor); 214 215 if (devpriv && devpriv->pci_dev) { 216 if (dev->iobase) { 217 comedi_pci_disable(devpriv->pci_dev); 218 } 219 pci_dev_put(devpriv->pci_dev); 220 } 221 222 return 0; 223} 224 225static int pci6208_ao_winsn(struct comedi_device *dev, 226 struct comedi_subdevice *s, 227 struct comedi_insn *insn, unsigned int *data) 228{ 229 int i = 0, Data_Read; 230 unsigned short chan = CR_CHAN(insn->chanspec); 231 unsigned long invert = 1 << (16 - 1); 232 unsigned long out_value; 233 /* Writing a list of values to an AO channel is probably not 234 * very useful, but that's how the interface is defined. */ 235 for (i = 0; i < insn->n; i++) { 236 out_value = data[i] ^ invert; 237 /* a typical programming sequence */ 238 do { 239 Data_Read = (inw(dev->iobase) & 1); 240 } while (Data_Read); 241 outw(out_value, dev->iobase + (0x02 * chan)); 242 devpriv->ao_readback[chan] = out_value; 243 } 244 245 /* return the number of samples read/written */ 246 return i; 247} 248 249/* AO subdevices should have a read insn as well as a write insn. 250 * Usually this means copying a value stored in devpriv. */ 251static int pci6208_ao_rinsn(struct comedi_device *dev, 252 struct comedi_subdevice *s, 253 struct comedi_insn *insn, unsigned int *data) 254{ 255 int i; 256 int chan = CR_CHAN(insn->chanspec); 257 258 for (i = 0; i < insn->n; i++) 259 data[i] = devpriv->ao_readback[chan]; 260 261 return i; 262} 263 264/* DIO devices are slightly special. Although it is possible to 265 * implement the insn_read/insn_write interface, it is much more 266 * useful to applications if you implement the insn_bits interface. 267 * This allows packed reading/writing of the DIO channels. The 268 * comedi core can convert between insn_bits and insn_read/write */ 269/* static int pci6208_dio_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, */ 270/* struct comedi_insn *insn,unsigned int *data) */ 271/* { */ 272/* if(insn->n!=2)return -EINVAL; */ 273 274 /* The insn data is a mask in data[0] and the new data 275 * in data[1], each channel cooresponding to a bit. */ 276/* if(data[0]){ */ 277/* s->state &= ~data[0]; */ 278/* s->state |= data[0]&data[1]; */ 279 /* Write out the new digital output lines */ 280 /* outw(s->state,dev->iobase + SKEL_DIO); */ 281/* } */ 282 283 /* on return, data[1] contains the value of the digital 284 * input and output lines. */ 285 /* data[1]=inw(dev->iobase + SKEL_DIO); */ 286 /* or we could just return the software copy of the output values if 287 * it was a purely digital output subdevice */ 288 /* data[1]=s->state; */ 289 290/* return 2; */ 291/* } */ 292 293/* static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, */ 294/* struct comedi_insn *insn,unsigned int *data) */ 295/* { */ 296/* int chan=CR_CHAN(insn->chanspec); */ 297 298 /* The input or output configuration of each digital line is 299 * configured by a special insn_config instruction. chanspec 300 * contains the channel to be changed, and data[0] contains the 301 * value COMEDI_INPUT or COMEDI_OUTPUT. */ 302 303/* if(data[0]==COMEDI_OUTPUT){ */ 304/* s->io_bits |= 1<<chan; */ 305/* }else{ */ 306/* s->io_bits &= ~(1<<chan); */ 307/* } */ 308 /* outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); */ 309 310/* return 1; */ 311/* } */ 312 313static int pci6208_find_device(struct comedi_device *dev, int bus, int slot) 314{ 315 struct pci_dev *pci_dev; 316 int i; 317 318 for (pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); 319 pci_dev != NULL; 320 pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) { 321 if (pci_dev->vendor == PCI_VENDOR_ID_ADLINK) { 322 for (i = 0; i < ARRAY_SIZE(pci6208_boards); i++) { 323 if (pci6208_boards[i].dev_id == pci_dev->device) { 324 /* was a particular bus/slot requested? */ 325 if ((bus != 0) || (slot != 0)) { 326 /* are we on the wrong bus/slot? */ 327 if (pci_dev->bus->number 328 != bus || 329 PCI_SLOT(pci_dev->devfn) 330 != slot) { 331 continue; 332 } 333 } 334 dev->board_ptr = pci6208_boards + i; 335 goto found; 336 } 337 } 338 } 339 } 340 341 printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n", 342 dev->minor, bus, slot); 343 return -EIO; 344 345found: 346 printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n", 347 dev->minor, 348 pci6208_boards[i].name, 349 pci_dev->bus->number, 350 PCI_SLOT(pci_dev->devfn), 351 PCI_FUNC(pci_dev->devfn), pci_dev->irq); 352 353 /* TODO: Warn about non-tested boards. */ 354 /* switch(board->device_id) */ 355 /* { */ 356 /* }; */ 357 358 devpriv->pci_dev = pci_dev; 359 360 return 0; 361} 362 363static int 364pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 365 int dev_minor) 366{ 367 unsigned long io_base, io_range, lcr_io_base, lcr_io_range; 368 369 /* Enable PCI device and request regions */ 370 if (comedi_pci_enable(pci_dev, PCI6208_DRIVER_NAME) < 0) { 371 printk 372 ("comedi%d: Failed to enable PCI device and request regions\n", 373 dev_minor); 374 return -EIO; 375 } 376 /* Read local configuration register base address [PCI_BASE_ADDRESS #1]. */ 377 lcr_io_base = pci_resource_start(pci_dev, 1); 378 lcr_io_range = pci_resource_len(pci_dev, 1); 379 380 printk("comedi%d: local config registers at address 0x%4lx [0x%4lx]\n", 381 dev_minor, lcr_io_base, lcr_io_range); 382 383 /* Read PCI6208 register base address [PCI_BASE_ADDRESS #2]. */ 384 io_base = pci_resource_start(pci_dev, 2); 385 io_range = pci_resource_end(pci_dev, 2) - io_base + 1; 386 387 printk("comedi%d: 6208 registers at address 0x%4lx [0x%4lx]\n", 388 dev_minor, io_base, io_range); 389 390 *io_base_ptr = io_base; 391 /* devpriv->io_range = io_range; */ 392 /* devpriv->is_valid=0; */ 393 /* devpriv->lcr_io_base=lcr_io_base; */ 394 /* devpriv->lcr_io_range=lcr_io_range; */ 395 396 return 0; 397} 398