adl_pci6208.c revision 14458b19e51d434990d9a8c110ddeefd09678e64
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_VENDOR_ID_ADLINK, 0x6208, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 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, struct comedi_devconfig * it); 111static int pci6208_detach(struct comedi_device * dev); 112 113#define pci6208_board_nbr \ 114 (sizeof(pci6208_boards) / sizeof(struct pci6208_board)) 115 116static struct comedi_driver driver_pci6208 = { 117 driver_name:PCI6208_DRIVER_NAME, 118 module:THIS_MODULE, 119 attach:pci6208_attach, 120 detach:pci6208_detach, 121}; 122 123COMEDI_PCI_INITCLEANUP(driver_pci6208, pci6208_pci_table); 124 125static int pci6208_find_device(struct comedi_device * dev, int bus, int slot); 126static int 127pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 128 int dev_minor); 129 130/*read/write functions*/ 131static int pci6208_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, 132 struct comedi_insn * insn, unsigned int * data); 133static int pci6208_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, 134 struct comedi_insn * insn, unsigned int * data); 135/* static int pci6208_dio_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, */ 136/* struct comedi_insn *insn,unsigned int *data); */ 137/* static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, */ 138/* struct comedi_insn *insn,unsigned int *data); */ 139 140/* 141 * Attach is called by the Comedi core to configure the driver 142 * for a particular board. If you specified a board_name array 143 * in the driver structure, dev->board_ptr contains that 144 * address. 145 */ 146static int pci6208_attach(struct comedi_device * dev, struct comedi_devconfig * it) 147{ 148 struct comedi_subdevice *s; 149 int retval; 150 unsigned long io_base; 151 152 printk("comedi%d: pci6208: ", dev->minor); 153 154 retval = alloc_private(dev, sizeof(struct pci6208_private)); 155 if (retval < 0) 156 return retval; 157 158 retval = pci6208_find_device(dev, it->options[0], it->options[1]); 159 if (retval < 0) 160 return retval; 161 162 retval = pci6208_pci_setup(devpriv->pci_dev, &io_base, dev->minor); 163 if (retval < 0) 164 return retval; 165 166 dev->iobase = io_base; 167 dev->board_name = thisboard->name; 168 169/* 170 * Allocate the subdevice structures. alloc_subdevice() is a 171 * convenient macro defined in comedidev.h. 172 */ 173 if (alloc_subdevices(dev, 2) < 0) 174 return -ENOMEM; 175 176 s = dev->subdevices + 0; 177 /* analog output subdevice */ 178 s->type = COMEDI_SUBD_AO; 179 s->subdev_flags = SDF_WRITABLE; /* anything else to add here?? */ 180 s->n_chan = thisboard->ao_chans; 181 s->maxdata = 0xffff; /* 16-bit DAC */ 182 s->range_table = &range_bipolar10; /* this needs to be checked. */ 183 s->insn_write = pci6208_ao_winsn; 184 s->insn_read = pci6208_ao_rinsn; 185 186 /* s=dev->subdevices+1; */ 187 /* digital i/o subdevice */ 188 /* s->type=COMEDI_SUBD_DIO; */ 189 /* s->subdev_flags=SDF_READABLE|SDF_WRITABLE; */ 190 /* s->n_chan=16; */ 191 /* s->maxdata=1; */ 192 /* s->range_table=&range_digital; */ 193 /* s->insn_bits = pci6208_dio_insn_bits; */ 194 /* s->insn_config = pci6208_dio_insn_config; */ 195 196 printk("attached\n"); 197 198 return 1; 199} 200 201/* 202 * _detach is called to deconfigure a device. It should deallocate 203 * resources. 204 * This function is also called when _attach() fails, so it should be 205 * careful not to release resources that were not necessarily 206 * allocated by _attach(). dev->private and dev->subdevices are 207 * deallocated automatically by the core. 208 */ 209static int pci6208_detach(struct comedi_device * dev) 210{ 211 printk("comedi%d: pci6208: remove\n", dev->minor); 212 213 if (devpriv && devpriv->pci_dev) { 214 if (dev->iobase) { 215 comedi_pci_disable(devpriv->pci_dev); 216 } 217 pci_dev_put(devpriv->pci_dev); 218 } 219 220 return 0; 221} 222 223static int pci6208_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, 224 struct comedi_insn * insn, unsigned int * data) 225{ 226 int i = 0, Data_Read; 227 unsigned short chan = CR_CHAN(insn->chanspec); 228 unsigned long invert = 1 << (16 - 1); 229 unsigned long out_value; 230 /* Writing a list of values to an AO channel is probably not 231 * very useful, but that's how the interface is defined. */ 232 for (i = 0; i < insn->n; i++) { 233 out_value = data[i] ^ invert; 234 /* a typical programming sequence */ 235 do { 236 Data_Read = (inw(dev->iobase) & 1); 237 } while (Data_Read); 238 outw(out_value, dev->iobase + (0x02 * chan)); 239 devpriv->ao_readback[chan] = out_value; 240 } 241 242 /* return the number of samples read/written */ 243 return i; 244} 245 246/* AO subdevices should have a read insn as well as a write insn. 247 * Usually this means copying a value stored in devpriv. */ 248static int pci6208_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, 249 struct comedi_insn * insn, unsigned int * data) 250{ 251 int i; 252 int chan = CR_CHAN(insn->chanspec); 253 254 for (i = 0; i < insn->n; i++) 255 data[i] = devpriv->ao_readback[chan]; 256 257 return i; 258} 259 260/* DIO devices are slightly special. Although it is possible to 261 * implement the insn_read/insn_write interface, it is much more 262 * useful to applications if you implement the insn_bits interface. 263 * This allows packed reading/writing of the DIO channels. The 264 * comedi core can convert between insn_bits and insn_read/write */ 265/* static int pci6208_dio_insn_bits(struct comedi_device *dev,struct comedi_subdevice *s, */ 266/* struct comedi_insn *insn,unsigned int *data) */ 267/* { */ 268/* if(insn->n!=2)return -EINVAL; */ 269 270 /* The insn data is a mask in data[0] and the new data 271 * in data[1], each channel cooresponding to a bit. */ 272/* if(data[0]){ */ 273/* s->state &= ~data[0]; */ 274/* s->state |= data[0]&data[1]; */ 275 /* Write out the new digital output lines */ 276 /* outw(s->state,dev->iobase + SKEL_DIO); */ 277/* } */ 278 279 /* on return, data[1] contains the value of the digital 280 * input and output lines. */ 281 /* data[1]=inw(dev->iobase + SKEL_DIO); */ 282 /* or we could just return the software copy of the output values if 283 * it was a purely digital output subdevice */ 284 /* data[1]=s->state; */ 285 286/* return 2; */ 287/* } */ 288 289/* static int pci6208_dio_insn_config(struct comedi_device *dev,struct comedi_subdevice *s, */ 290/* struct comedi_insn *insn,unsigned int *data) */ 291/* { */ 292/* int chan=CR_CHAN(insn->chanspec); */ 293 294 /* The input or output configuration of each digital line is 295 * configured by a special insn_config instruction. chanspec 296 * contains the channel to be changed, and data[0] contains the 297 * value COMEDI_INPUT or COMEDI_OUTPUT. */ 298 299/* if(data[0]==COMEDI_OUTPUT){ */ 300/* s->io_bits |= 1<<chan; */ 301/* }else{ */ 302/* s->io_bits &= ~(1<<chan); */ 303/* } */ 304 /* outw(s->io_bits,dev->iobase + SKEL_DIO_CONFIG); */ 305 306/* return 1; */ 307/* } */ 308 309static int pci6208_find_device(struct comedi_device * dev, int bus, int slot) 310{ 311 struct pci_dev *pci_dev; 312 int i; 313 314 for (pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL); 315 pci_dev != NULL; 316 pci_dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) { 317 if (pci_dev->vendor == PCI_VENDOR_ID_ADLINK) { 318 for (i = 0; i < pci6208_board_nbr; i++) { 319 if (pci6208_boards[i].dev_id == pci_dev->device) { 320 /* was a particular bus/slot requested? */ 321 if ((bus != 0) || (slot != 0)) { 322 /* are we on the wrong bus/slot? */ 323 if (pci_dev->bus->number 324 != bus || 325 PCI_SLOT(pci_dev->devfn) 326 != slot) { 327 continue; 328 } 329 } 330 dev->board_ptr = pci6208_boards + i; 331 goto found; 332 } 333 } 334 } 335 } 336 337 printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n", 338 dev->minor, bus, slot); 339 return -EIO; 340 341 found: 342 printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n", 343 dev->minor, 344 pci6208_boards[i].name, 345 pci_dev->bus->number, 346 PCI_SLOT(pci_dev->devfn), 347 PCI_FUNC(pci_dev->devfn), pci_dev->irq); 348 349 /* TODO: Warn about non-tested boards. */ 350 /* switch(board->device_id) */ 351 /* { */ 352 /* }; */ 353 354 devpriv->pci_dev = pci_dev; 355 356 return 0; 357} 358 359static int 360pci6208_pci_setup(struct pci_dev *pci_dev, unsigned long *io_base_ptr, 361 int dev_minor) 362{ 363 unsigned long io_base, io_range, lcr_io_base, lcr_io_range; 364 365 /* Enable PCI device and request regions */ 366 if (comedi_pci_enable(pci_dev, PCI6208_DRIVER_NAME) < 0) { 367 printk("comedi%d: Failed to enable PCI device and request regions\n", dev_minor); 368 return -EIO; 369 } 370 /* Read local configuration register base address [PCI_BASE_ADDRESS #1]. */ 371 lcr_io_base = pci_resource_start(pci_dev, 1); 372 lcr_io_range = pci_resource_len(pci_dev, 1); 373 374 printk("comedi%d: local config registers at address 0x%4lx [0x%4lx]\n", 375 dev_minor, lcr_io_base, lcr_io_range); 376 377 /* Read PCI6208 register base address [PCI_BASE_ADDRESS #2]. */ 378 io_base = pci_resource_start(pci_dev, 2); 379 io_range = pci_resource_end(pci_dev, 2) - io_base + 1; 380 381 printk("comedi%d: 6208 registers at address 0x%4lx [0x%4lx]\n", 382 dev_minor, io_base, io_range); 383 384 *io_base_ptr = io_base; 385 /* devpriv->io_range = io_range; */ 386 /* devpriv->is_valid=0; */ 387 /* devpriv->lcr_io_base=lcr_io_base; */ 388 /* devpriv->lcr_io_range=lcr_io_range; */ 389 390 return 0; 391} 392