Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 1 | /* |
| 2 | comedi/drivers/pcl816.c |
| 3 | |
| 4 | Author: Juan Grigera <juan@grigera.com.ar> |
| 5 | based on pcl818 by Michal Dobes <dobes@tesnet.cz> and bits of pcl812 |
| 6 | |
| 7 | hardware driver for Advantech cards: |
| 8 | card: PCL-816, PCL814B |
| 9 | driver: pcl816 |
| 10 | */ |
| 11 | /* |
| 12 | Driver: pcl816 |
| 13 | Description: Advantech PCL-816 cards, PCL-814 |
| 14 | Author: Juan Grigera <juan@grigera.com.ar> |
| 15 | Devices: [Advantech] PCL-816 (pcl816), PCL-814B (pcl814b) |
| 16 | Status: works |
| 17 | Updated: Tue, 2 Apr 2002 23:15:21 -0800 |
| 18 | |
| 19 | PCL 816 and 814B have 16 SE/DIFF ADCs, 16 DACs, 16 DI and 16 DO. |
| 20 | Differences are at resolution (16 vs 12 bits). |
| 21 | |
| 22 | The driver support AI command mode, other subdevices not written. |
| 23 | |
| 24 | Analog output and digital input and output are not supported. |
| 25 | |
| 26 | Configuration Options: |
| 27 | [0] - IO Base |
| 28 | [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7) |
| 29 | [2] - DMA (0=disable, 1, 3) |
| 30 | [3] - 0, 10=10MHz clock for 8254 |
| 31 | 1= 1MHz clock for 8254 |
| 32 | |
| 33 | */ |
| 34 | |
| 35 | #include "../comedidev.h" |
| 36 | |
| 37 | #include <linux/ioport.h> |
| 38 | #include <linux/mc146818rtc.h> |
| 39 | #include <linux/delay.h> |
| 40 | #include <asm/dma.h> |
| 41 | |
| 42 | #include "8253.h" |
| 43 | |
| 44 | #define DEBUG(x) x |
| 45 | |
| 46 | // boards constants |
| 47 | // IO space len |
| 48 | #define PCLx1x_RANGE 16 |
| 49 | |
| 50 | //#define outb(x,y) printk("OUTB(%x, 200+%d)\n", x,y-0x200); outb(x,y) |
| 51 | |
| 52 | // INTEL 8254 counters |
| 53 | #define PCL816_CTR0 4 |
| 54 | #define PCL816_CTR1 5 |
| 55 | #define PCL816_CTR2 6 |
| 56 | // R: counter read-back register W: counter control |
| 57 | #define PCL816_CTRCTL 7 |
| 58 | |
| 59 | // R: A/D high byte W: A/D range control |
| 60 | #define PCL816_RANGE 9 |
| 61 | // W: clear INT request |
| 62 | #define PCL816_CLRINT 10 |
| 63 | // R: next mux scan channel W: mux scan channel & range control pointer |
| 64 | #define PCL816_MUX 11 |
| 65 | // R/W: operation control register |
| 66 | #define PCL816_CONTROL 12 |
| 67 | |
| 68 | // R: return status byte W: set DMA/IRQ |
| 69 | #define PCL816_STATUS 13 |
| 70 | #define PCL816_STATUS_DRDY_MASK 0x80 |
| 71 | |
| 72 | // R: low byte of A/D W: soft A/D trigger |
| 73 | #define PCL816_AD_LO 8 |
| 74 | // R: high byte of A/D W: A/D range control |
| 75 | #define PCL816_AD_HI 9 |
| 76 | |
| 77 | // type of interrupt handler |
| 78 | #define INT_TYPE_AI1_INT 1 |
| 79 | #define INT_TYPE_AI1_DMA 2 |
| 80 | #define INT_TYPE_AI3_INT 4 |
| 81 | #define INT_TYPE_AI3_DMA 5 |
| 82 | #ifdef unused |
| 83 | #define INT_TYPE_AI1_DMA_RTC 9 |
| 84 | #define INT_TYPE_AI3_DMA_RTC 10 |
| 85 | |
| 86 | // RTC stuff... |
| 87 | #define RTC_IRQ 8 |
| 88 | #define RTC_IO_EXTENT 0x10 |
| 89 | #endif |
| 90 | |
| 91 | #define MAGIC_DMA_WORD 0x5a5a |
| 92 | |
| 93 | static const comedi_lrange range_pcl816 = { 8, { |
| 94 | BIP_RANGE(10), |
| 95 | BIP_RANGE(5), |
| 96 | BIP_RANGE(2.5), |
| 97 | BIP_RANGE(1.25), |
| 98 | UNI_RANGE(10), |
| 99 | UNI_RANGE(5), |
| 100 | UNI_RANGE(2.5), |
| 101 | UNI_RANGE(1.25), |
| 102 | } |
| 103 | }; |
| 104 | typedef struct { |
| 105 | const char *name; // board name |
| 106 | int n_ranges; // len of range list |
| 107 | int n_aichan; // num of A/D chans in diferencial mode |
| 108 | unsigned int ai_ns_min; // minimal alllowed delay between samples (in ns) |
| 109 | int n_aochan; // num of D/A chans |
| 110 | int n_dichan; // num of DI chans |
| 111 | int n_dochan; // num of DO chans |
| 112 | const comedi_lrange *ai_range_type; // default A/D rangelist |
| 113 | const comedi_lrange *ao_range_type; // dafault D/A rangelist |
| 114 | unsigned int io_range; // len of IO space |
| 115 | unsigned int IRQbits; // allowed interrupts |
| 116 | unsigned int DMAbits; // allowed DMA chans |
| 117 | int ai_maxdata; // maxdata for A/D |
| 118 | int ao_maxdata; // maxdata for D/A |
| 119 | int ai_chanlist; // allowed len of channel list A/D |
| 120 | int ao_chanlist; // allowed len of channel list D/A |
| 121 | int i8254_osc_base; // 1/frequency of on board oscilator in ns |
| 122 | } boardtype; |
| 123 | |
| 124 | static const boardtype boardtypes[] = { |
| 125 | {"pcl816", 8, 16, 10000, 1, 16, 16, &range_pcl816, |
| 126 | &range_pcl816, PCLx1x_RANGE, |
| 127 | 0x00fc, // IRQ mask |
| 128 | 0x0a, // DMA mask |
| 129 | 0xffff, // 16-bit card |
| 130 | 0xffff, // D/A maxdata |
| 131 | 1024, |
| 132 | 1, // ao chan list |
| 133 | 100}, |
| 134 | {"pcl814b", 8, 16, 10000, 1, 16, 16, &range_pcl816, |
| 135 | &range_pcl816, PCLx1x_RANGE, |
| 136 | 0x00fc, |
| 137 | 0x0a, |
| 138 | 0x3fff, /* 14 bit card */ |
| 139 | 0x3fff, |
| 140 | 1024, |
| 141 | 1, |
| 142 | 100}, |
| 143 | }; |
| 144 | |
| 145 | #define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype)) |
| 146 | #define devpriv ((pcl816_private *)dev->private) |
| 147 | #define this_board ((const boardtype *)dev->board_ptr) |
| 148 | |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 149 | static int pcl816_attach(struct comedi_device * dev, comedi_devconfig * it); |
| 150 | static int pcl816_detach(struct comedi_device * dev); |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 151 | |
| 152 | #ifdef unused |
| 153 | static int RTC_lock = 0; /* RTC lock */ |
| 154 | static int RTC_timer_lock = 0; /* RTC int lock */ |
| 155 | #endif |
| 156 | |
| 157 | static comedi_driver driver_pcl816 = { |
| 158 | driver_name:"pcl816", |
| 159 | module:THIS_MODULE, |
| 160 | attach:pcl816_attach, |
| 161 | detach:pcl816_detach, |
| 162 | board_name:&boardtypes[0].name, |
| 163 | num_names:n_boardtypes, |
| 164 | offset:sizeof(boardtype), |
| 165 | }; |
| 166 | |
| 167 | COMEDI_INITCLEANUP(driver_pcl816); |
| 168 | |
| 169 | typedef struct { |
| 170 | unsigned int dma; // used DMA, 0=don't use DMA |
| 171 | int dma_rtc; // 1=RTC used with DMA, 0=no RTC alloc |
| 172 | #ifdef unused |
| 173 | unsigned long rtc_iobase; // RTC port region |
| 174 | unsigned int rtc_iosize; |
| 175 | unsigned int rtc_irq; |
| 176 | #endif |
| 177 | unsigned long dmabuf[2]; // pointers to begin of DMA buffers |
| 178 | unsigned int dmapages[2]; // len of DMA buffers in PAGE_SIZEs |
| 179 | unsigned int hwdmaptr[2]; // hardware address of DMA buffers |
| 180 | unsigned int hwdmasize[2]; // len of DMA buffers in Bytes |
| 181 | unsigned int dmasamplsize; // size in samples hwdmasize[0]/2 |
| 182 | unsigned int last_top_dma; // DMA pointer in last RTC int |
| 183 | int next_dma_buf; // which DMA buffer will be used next round |
| 184 | long dma_runs_to_end; // how many we must permorm DMA transfer to end of record |
| 185 | unsigned long last_dma_run; // how many bytes we must transfer on last DMA page |
| 186 | |
| 187 | unsigned int ai_scans; // len of scanlist |
| 188 | unsigned char ai_neverending; // if=1, then we do neverending record (you must use cancel()) |
| 189 | int irq_free; // 1=have allocated IRQ |
| 190 | int irq_blocked; // 1=IRQ now uses any subdev |
| 191 | #ifdef unused |
| 192 | int rtc_irq_blocked; // 1=we now do AI with DMA&RTC |
| 193 | #endif |
| 194 | int irq_was_now_closed; // when IRQ finish, there's stored int816_mode for last interrupt |
| 195 | int int816_mode; // who now uses IRQ - 1=AI1 int, 2=AI1 dma, 3=AI3 int, 4AI3 dma |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 196 | struct comedi_subdevice *last_int_sub; // ptr to subdevice which now finish |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 197 | int ai_act_scan; // how many scans we finished |
| 198 | unsigned int ai_act_chanlist[16]; // MUX setting for actual AI operations |
| 199 | unsigned int ai_act_chanlist_len; // how long is actual MUX list |
| 200 | unsigned int ai_act_chanlist_pos; // actual position in MUX list |
| 201 | unsigned int ai_poll_ptr; // how many sampes transfer poll |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 202 | struct comedi_subdevice *sub_ai; // ptr to AI subdevice |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 203 | #ifdef unused |
| 204 | struct timer_list rtc_irq_timer; // timer for RTC sanity check |
| 205 | unsigned long rtc_freq; // RTC int freq |
| 206 | #endif |
| 207 | } pcl816_private; |
| 208 | |
| 209 | /* |
| 210 | ============================================================================== |
| 211 | */ |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 212 | static int check_and_setup_channel_list(struct comedi_device * dev, |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 213 | struct comedi_subdevice * s, unsigned int *chanlist, int chanlen); |
| 214 | static int pcl816_ai_cancel(struct comedi_device * dev, struct comedi_subdevice * s); |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 215 | static void start_pacer(struct comedi_device * dev, int mode, unsigned int divisor1, |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 216 | unsigned int divisor2); |
| 217 | #ifdef unused |
| 218 | static int set_rtc_irq_bit(unsigned char bit); |
| 219 | #endif |
| 220 | |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 221 | static int pcl816_ai_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 222 | comedi_cmd * cmd); |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 223 | static int pcl816_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s); |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 224 | |
| 225 | /* |
| 226 | ============================================================================== |
| 227 | ANALOG INPUT MODE0, 816 cards, slow version |
| 228 | */ |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 229 | static int pcl816_ai_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame] | 230 | comedi_insn * insn, unsigned int * data) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 231 | { |
| 232 | int n; |
| 233 | int timeout; |
| 234 | |
| 235 | DPRINTK("mode 0 analog input\n"); |
| 236 | // software trigger, DMA and INT off |
| 237 | outb(0, dev->iobase + PCL816_CONTROL); |
| 238 | // clear INT (conversion end) flag |
| 239 | outb(0, dev->iobase + PCL816_CLRINT); |
| 240 | |
| 241 | // Set the input channel |
| 242 | outb(CR_CHAN(insn->chanspec) & 0xf, dev->iobase + PCL816_MUX); |
| 243 | outb(CR_RANGE(insn->chanspec), dev->iobase + PCL816_RANGE); /* select gain */ |
| 244 | |
| 245 | for (n = 0; n < insn->n; n++) { |
| 246 | |
| 247 | outb(0, dev->iobase + PCL816_AD_LO); /* start conversion */ |
| 248 | |
| 249 | timeout = 100; |
| 250 | while (timeout--) { |
| 251 | if (!(inb(dev->iobase + PCL816_STATUS) & |
| 252 | PCL816_STATUS_DRDY_MASK)) { |
| 253 | // return read value |
| 254 | data[n] = |
| 255 | ((inb(dev->iobase + |
| 256 | PCL816_AD_HI) << 8) | |
| 257 | (inb(dev->iobase + PCL816_AD_LO))); |
| 258 | |
| 259 | outb(0, dev->iobase + PCL816_CLRINT); /* clear INT (conversion end) flag */ |
| 260 | break; |
| 261 | } |
| 262 | comedi_udelay(1); |
| 263 | } |
| 264 | // Return timeout error |
| 265 | if (!timeout) { |
| 266 | comedi_error(dev, "A/D insn timeout\n"); |
| 267 | data[0] = 0; |
| 268 | outb(0, dev->iobase + PCL816_CLRINT); /* clear INT (conversion end) flag */ |
| 269 | return -EIO; |
| 270 | } |
| 271 | |
| 272 | } |
| 273 | return n; |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | ============================================================================== |
| 278 | analog input interrupt mode 1 & 3, 818 cards |
| 279 | one sample per interrupt version |
| 280 | */ |
| 281 | static irqreturn_t interrupt_pcl816_ai_mode13_int(int irq, void *d) |
| 282 | { |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 283 | struct comedi_device *dev = d; |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 284 | struct comedi_subdevice *s = dev->subdevices + 0; |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 285 | int low, hi; |
| 286 | int timeout = 50; /* wait max 50us */ |
| 287 | |
| 288 | while (timeout--) { |
| 289 | if (!(inb(dev->iobase + PCL816_STATUS) & |
| 290 | PCL816_STATUS_DRDY_MASK)) |
| 291 | break; |
| 292 | comedi_udelay(1); |
| 293 | } |
| 294 | if (!timeout) { // timeout, bail error |
| 295 | outb(0, dev->iobase + PCL816_CLRINT); /* clear INT request */ |
| 296 | comedi_error(dev, "A/D mode1/3 IRQ without DRDY!"); |
| 297 | pcl816_ai_cancel(dev, s); |
| 298 | s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR; |
| 299 | comedi_event(dev, s); |
| 300 | return IRQ_HANDLED; |
| 301 | |
| 302 | } |
| 303 | |
| 304 | // get the sample |
| 305 | low = inb(dev->iobase + PCL816_AD_LO); |
| 306 | hi = inb(dev->iobase + PCL816_AD_HI); |
| 307 | |
| 308 | comedi_buf_put(s->async, (hi << 8) | low); |
| 309 | |
| 310 | outb(0, dev->iobase + PCL816_CLRINT); /* clear INT request */ |
| 311 | |
| 312 | if (++devpriv->ai_act_chanlist_pos >= devpriv->ai_act_chanlist_len) |
| 313 | devpriv->ai_act_chanlist_pos = 0; |
| 314 | |
| 315 | if (s->async->cur_chan == 0) { |
| 316 | devpriv->ai_act_scan++; |
| 317 | } |
| 318 | |
| 319 | if (!devpriv->ai_neverending) |
| 320 | if (devpriv->ai_act_scan >= devpriv->ai_scans) { /* all data sampled */ |
| 321 | /* all data sampled */ |
| 322 | pcl816_ai_cancel(dev, s); |
| 323 | s->async->events |= COMEDI_CB_EOA; |
| 324 | } |
| 325 | comedi_event(dev, s); |
| 326 | return IRQ_HANDLED; |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | ============================================================================== |
| 331 | analog input dma mode 1 & 3, 816 cards |
| 332 | */ |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 333 | static void transfer_from_dma_buf(struct comedi_device * dev, struct comedi_subdevice * s, |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame] | 334 | short * ptr, unsigned int bufptr, unsigned int len) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 335 | { |
| 336 | int i; |
| 337 | |
| 338 | s->async->events = 0; |
| 339 | |
| 340 | for (i = 0; i < len; i++) { |
| 341 | |
| 342 | comedi_buf_put(s->async, ptr[bufptr++]); |
| 343 | |
| 344 | if (++devpriv->ai_act_chanlist_pos >= |
| 345 | devpriv->ai_act_chanlist_len) { |
| 346 | devpriv->ai_act_chanlist_pos = 0; |
| 347 | devpriv->ai_act_scan++; |
| 348 | } |
| 349 | |
| 350 | if (!devpriv->ai_neverending) |
| 351 | if (devpriv->ai_act_scan >= devpriv->ai_scans) { // all data sampled |
| 352 | pcl816_ai_cancel(dev, s); |
| 353 | s->async->events |= COMEDI_CB_EOA; |
| 354 | s->async->events |= COMEDI_CB_BLOCK; |
| 355 | break; |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | comedi_event(dev, s); |
| 360 | } |
| 361 | |
| 362 | static irqreturn_t interrupt_pcl816_ai_mode13_dma(int irq, void *d) |
| 363 | { |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 364 | struct comedi_device *dev = d; |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 365 | struct comedi_subdevice *s = dev->subdevices + 0; |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 366 | int len, bufptr, this_dma_buf; |
| 367 | unsigned long dma_flags; |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame] | 368 | short *ptr; |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 369 | |
| 370 | disable_dma(devpriv->dma); |
| 371 | this_dma_buf = devpriv->next_dma_buf; |
| 372 | |
| 373 | if ((devpriv->dma_runs_to_end > -1) || devpriv->ai_neverending) { // switch dma bufs |
| 374 | |
| 375 | devpriv->next_dma_buf = 1 - devpriv->next_dma_buf; |
| 376 | set_dma_mode(devpriv->dma, DMA_MODE_READ); |
| 377 | dma_flags = claim_dma_lock(); |
| 378 | // clear_dma_ff (devpriv->dma); |
| 379 | set_dma_addr(devpriv->dma, |
| 380 | devpriv->hwdmaptr[devpriv->next_dma_buf]); |
| 381 | if (devpriv->dma_runs_to_end) { |
| 382 | set_dma_count(devpriv->dma, |
| 383 | devpriv->hwdmasize[devpriv->next_dma_buf]); |
| 384 | } else { |
| 385 | set_dma_count(devpriv->dma, devpriv->last_dma_run); |
| 386 | } |
| 387 | release_dma_lock(dma_flags); |
| 388 | enable_dma(devpriv->dma); |
| 389 | } |
| 390 | |
| 391 | devpriv->dma_runs_to_end--; |
| 392 | outb(0, dev->iobase + PCL816_CLRINT); /* clear INT request */ |
| 393 | |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame] | 394 | ptr = (short *) devpriv->dmabuf[this_dma_buf]; |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 395 | |
| 396 | len = (devpriv->hwdmasize[0] >> 1) - devpriv->ai_poll_ptr; |
| 397 | bufptr = devpriv->ai_poll_ptr; |
| 398 | devpriv->ai_poll_ptr = 0; |
| 399 | |
| 400 | transfer_from_dma_buf(dev, s, ptr, bufptr, len); |
| 401 | return IRQ_HANDLED; |
| 402 | } |
| 403 | |
| 404 | /* |
| 405 | ============================================================================== |
| 406 | INT procedure |
| 407 | */ |
| 408 | static irqreturn_t interrupt_pcl816(int irq, void *d PT_REGS_ARG) |
| 409 | { |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 410 | struct comedi_device *dev = d; |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 411 | DPRINTK("<I>"); |
| 412 | |
| 413 | if (!dev->attached) { |
| 414 | comedi_error(dev, "premature interrupt"); |
| 415 | return IRQ_HANDLED; |
| 416 | } |
| 417 | |
| 418 | switch (devpriv->int816_mode) { |
| 419 | case INT_TYPE_AI1_DMA: |
| 420 | case INT_TYPE_AI3_DMA: |
| 421 | return interrupt_pcl816_ai_mode13_dma(irq, d); |
| 422 | case INT_TYPE_AI1_INT: |
| 423 | case INT_TYPE_AI3_INT: |
| 424 | return interrupt_pcl816_ai_mode13_int(irq, d); |
| 425 | } |
| 426 | |
| 427 | outb(0, dev->iobase + PCL816_CLRINT); /* clear INT request */ |
| 428 | if ((!dev->irq) | (!devpriv->irq_free) | (!devpriv->irq_blocked) | |
| 429 | (!devpriv->int816_mode)) { |
| 430 | if (devpriv->irq_was_now_closed) { |
| 431 | devpriv->irq_was_now_closed = 0; |
| 432 | // comedi_error(dev,"last IRQ.."); |
| 433 | return IRQ_HANDLED; |
| 434 | } |
| 435 | comedi_error(dev, "bad IRQ!"); |
| 436 | return IRQ_NONE; |
| 437 | } |
| 438 | comedi_error(dev, "IRQ from unknow source!"); |
| 439 | return IRQ_NONE; |
| 440 | } |
| 441 | |
| 442 | /* |
| 443 | ============================================================================== |
| 444 | COMMAND MODE |
| 445 | */ |
| 446 | static void pcl816_cmdtest_out(int e, comedi_cmd * cmd) |
| 447 | { |
| 448 | rt_printk("pcl816 e=%d startsrc=%x scansrc=%x convsrc=%x\n", e, |
| 449 | cmd->start_src, cmd->scan_begin_src, cmd->convert_src); |
| 450 | rt_printk("pcl816 e=%d startarg=%d scanarg=%d convarg=%d\n", e, |
| 451 | cmd->start_arg, cmd->scan_begin_arg, cmd->convert_arg); |
| 452 | rt_printk("pcl816 e=%d stopsrc=%x scanend=%x\n", e, cmd->stop_src, |
| 453 | cmd->scan_end_src); |
| 454 | rt_printk("pcl816 e=%d stoparg=%d scanendarg=%d chanlistlen=%d\n", e, |
| 455 | cmd->stop_arg, cmd->scan_end_arg, cmd->chanlist_len); |
| 456 | } |
| 457 | |
| 458 | /* |
| 459 | ============================================================================== |
| 460 | */ |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 461 | static int pcl816_ai_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 462 | comedi_cmd * cmd) |
| 463 | { |
| 464 | int err = 0; |
| 465 | int tmp, divisor1, divisor2; |
| 466 | |
| 467 | DEBUG(rt_printk("pcl816 pcl812_ai_cmdtest\n"); |
| 468 | pcl816_cmdtest_out(-1, cmd);); |
| 469 | |
| 470 | /* step 1: make sure trigger sources are trivially valid */ |
| 471 | tmp = cmd->start_src; |
| 472 | cmd->start_src &= TRIG_NOW; |
| 473 | if (!cmd->start_src || tmp != cmd->start_src) |
| 474 | err++; |
| 475 | |
| 476 | tmp = cmd->scan_begin_src; |
| 477 | cmd->scan_begin_src &= TRIG_FOLLOW; |
| 478 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) |
| 479 | err++; |
| 480 | |
| 481 | if (!cmd->convert_src & (TRIG_EXT | TRIG_TIMER)) |
| 482 | err++; |
| 483 | |
| 484 | tmp = cmd->scan_end_src; |
| 485 | cmd->scan_end_src &= TRIG_COUNT; |
| 486 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) |
| 487 | err++; |
| 488 | |
| 489 | tmp = cmd->stop_src; |
| 490 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; |
| 491 | if (!cmd->stop_src || tmp != cmd->stop_src) |
| 492 | err++; |
| 493 | |
| 494 | if (err) { |
| 495 | return 1; |
| 496 | } |
| 497 | |
| 498 | /* step 2: make sure trigger sources are unique and mutually compatible */ |
| 499 | |
| 500 | if (cmd->start_src != TRIG_NOW) { |
| 501 | cmd->start_src = TRIG_NOW; |
| 502 | err++; |
| 503 | } |
| 504 | |
| 505 | if (cmd->scan_begin_src != TRIG_FOLLOW) { |
| 506 | cmd->scan_begin_src = TRIG_FOLLOW; |
| 507 | err++; |
| 508 | } |
| 509 | |
| 510 | if (cmd->convert_src != TRIG_EXT && cmd->convert_src != TRIG_TIMER) { |
| 511 | cmd->convert_src = TRIG_TIMER; |
| 512 | err++; |
| 513 | } |
| 514 | |
| 515 | if (cmd->scan_end_src != TRIG_COUNT) { |
| 516 | cmd->scan_end_src = TRIG_COUNT; |
| 517 | err++; |
| 518 | } |
| 519 | |
| 520 | if (cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_COUNT) |
| 521 | err++; |
| 522 | |
| 523 | if (err) { |
| 524 | return 2; |
| 525 | } |
| 526 | |
| 527 | /* step 3: make sure arguments are trivially compatible */ |
| 528 | if (cmd->start_arg != 0) { |
| 529 | cmd->start_arg = 0; |
| 530 | err++; |
| 531 | } |
| 532 | |
| 533 | if (cmd->scan_begin_arg != 0) { |
| 534 | cmd->scan_begin_arg = 0; |
| 535 | err++; |
| 536 | } |
| 537 | if (cmd->convert_src == TRIG_TIMER) { |
| 538 | if (cmd->convert_arg < this_board->ai_ns_min) { |
| 539 | cmd->convert_arg = this_board->ai_ns_min; |
| 540 | err++; |
| 541 | } |
| 542 | } else { /* TRIG_EXT */ |
| 543 | if (cmd->convert_arg != 0) { |
| 544 | cmd->convert_arg = 0; |
| 545 | err++; |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | if (!cmd->chanlist_len) { |
| 550 | cmd->chanlist_len = 1; |
| 551 | err++; |
| 552 | } |
| 553 | if (cmd->chanlist_len > this_board->n_aichan) { |
| 554 | cmd->chanlist_len = this_board->n_aichan; |
| 555 | err++; |
| 556 | } |
| 557 | if (cmd->scan_end_arg != cmd->chanlist_len) { |
| 558 | cmd->scan_end_arg = cmd->chanlist_len; |
| 559 | err++; |
| 560 | } |
| 561 | if (cmd->stop_src == TRIG_COUNT) { |
| 562 | if (!cmd->stop_arg) { |
| 563 | cmd->stop_arg = 1; |
| 564 | err++; |
| 565 | } |
| 566 | } else { /* TRIG_NONE */ |
| 567 | if (cmd->stop_arg != 0) { |
| 568 | cmd->stop_arg = 0; |
| 569 | err++; |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | if (err) { |
| 574 | return 3; |
| 575 | } |
| 576 | |
| 577 | /* step 4: fix up any arguments */ |
| 578 | if (cmd->convert_src == TRIG_TIMER) { |
| 579 | tmp = cmd->convert_arg; |
| 580 | i8253_cascade_ns_to_timer(this_board->i8254_osc_base, |
| 581 | &divisor1, &divisor2, &cmd->convert_arg, |
| 582 | cmd->flags & TRIG_ROUND_MASK); |
| 583 | if (cmd->convert_arg < this_board->ai_ns_min) |
| 584 | cmd->convert_arg = this_board->ai_ns_min; |
| 585 | if (tmp != cmd->convert_arg) |
| 586 | err++; |
| 587 | } |
| 588 | |
| 589 | if (err) { |
| 590 | return 4; |
| 591 | } |
| 592 | |
| 593 | return 0; |
| 594 | } |
| 595 | |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 596 | static int pcl816_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 597 | { |
| 598 | unsigned int divisor1 = 0, divisor2 = 0, dma_flags, bytes, dmairq; |
| 599 | comedi_cmd *cmd = &s->async->cmd; |
| 600 | |
| 601 | if (cmd->start_src != TRIG_NOW) |
| 602 | return -EINVAL; |
| 603 | if (cmd->scan_begin_src != TRIG_FOLLOW) |
| 604 | return -EINVAL; |
| 605 | if (cmd->scan_end_src != TRIG_COUNT) |
| 606 | return -EINVAL; |
| 607 | if (cmd->scan_end_arg != cmd->chanlist_len) |
| 608 | return -EINVAL; |
| 609 | // if(cmd->chanlist_len>MAX_CHANLIST_LEN) return -EINVAL; |
| 610 | if (devpriv->irq_blocked) |
| 611 | return -EBUSY; |
| 612 | |
| 613 | if (cmd->convert_src == TRIG_TIMER) { |
| 614 | if (cmd->convert_arg < this_board->ai_ns_min) |
| 615 | cmd->convert_arg = this_board->ai_ns_min; |
| 616 | |
| 617 | i8253_cascade_ns_to_timer(this_board->i8254_osc_base, &divisor1, |
| 618 | &divisor2, &cmd->convert_arg, |
| 619 | cmd->flags & TRIG_ROUND_MASK); |
| 620 | if (divisor1 == 1) { // PCL816 crash if any divisor is set to 1 |
| 621 | divisor1 = 2; |
| 622 | divisor2 /= 2; |
| 623 | } |
| 624 | if (divisor2 == 1) { |
| 625 | divisor2 = 2; |
| 626 | divisor1 /= 2; |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | start_pacer(dev, -1, 0, 0); // stop pacer |
| 631 | |
| 632 | if (!check_and_setup_channel_list(dev, s, cmd->chanlist, |
| 633 | cmd->chanlist_len)) |
| 634 | return -EINVAL; |
| 635 | comedi_udelay(1); |
| 636 | |
| 637 | devpriv->ai_act_scan = 0; |
| 638 | s->async->cur_chan = 0; |
| 639 | devpriv->irq_blocked = 1; |
| 640 | devpriv->ai_poll_ptr = 0; |
| 641 | devpriv->irq_was_now_closed = 0; |
| 642 | |
| 643 | if (cmd->stop_src == TRIG_COUNT) { |
| 644 | devpriv->ai_scans = cmd->stop_arg; |
| 645 | devpriv->ai_neverending = 0; |
| 646 | } else { |
| 647 | devpriv->ai_scans = 0; |
| 648 | devpriv->ai_neverending = 1; |
| 649 | } |
| 650 | |
| 651 | if ((cmd->flags & TRIG_WAKE_EOS)) { // don't we want wake up every scan? |
| 652 | printk("pl816: You wankt WAKE_EOS but I dont want handle it"); |
| 653 | // devpriv->ai_eos=1; |
| 654 | //if (devpriv->ai_n_chan==1) |
| 655 | // devpriv->dma=0; // DMA is useless for this situation |
| 656 | } |
| 657 | |
| 658 | if (devpriv->dma) { |
| 659 | bytes = devpriv->hwdmasize[0]; |
| 660 | if (!devpriv->ai_neverending) { |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame] | 661 | bytes = s->async->cmd.chanlist_len * s->async->cmd.chanlist_len * sizeof(short); // how many |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 662 | devpriv->dma_runs_to_end = bytes / devpriv->hwdmasize[0]; // how many DMA pages we must fill |
| 663 | devpriv->last_dma_run = bytes % devpriv->hwdmasize[0]; //on last dma transfer must be moved |
| 664 | devpriv->dma_runs_to_end--; |
| 665 | if (devpriv->dma_runs_to_end >= 0) |
| 666 | bytes = devpriv->hwdmasize[0]; |
| 667 | } else |
| 668 | devpriv->dma_runs_to_end = -1; |
| 669 | |
| 670 | devpriv->next_dma_buf = 0; |
| 671 | set_dma_mode(devpriv->dma, DMA_MODE_READ); |
| 672 | dma_flags = claim_dma_lock(); |
| 673 | clear_dma_ff(devpriv->dma); |
| 674 | set_dma_addr(devpriv->dma, devpriv->hwdmaptr[0]); |
| 675 | set_dma_count(devpriv->dma, bytes); |
| 676 | release_dma_lock(dma_flags); |
| 677 | enable_dma(devpriv->dma); |
| 678 | } |
| 679 | |
| 680 | start_pacer(dev, 1, divisor1, divisor2); |
| 681 | dmairq = ((devpriv->dma & 0x3) << 4) | (dev->irq & 0x7); |
| 682 | |
| 683 | switch (cmd->convert_src) { |
| 684 | case TRIG_TIMER: |
| 685 | devpriv->int816_mode = INT_TYPE_AI1_DMA; |
| 686 | outb(0x32, dev->iobase + PCL816_CONTROL); // Pacer+IRQ+DMA |
| 687 | outb(dmairq, dev->iobase + PCL816_STATUS); // write irq and DMA to card |
| 688 | break; |
| 689 | |
| 690 | default: |
| 691 | devpriv->int816_mode = INT_TYPE_AI3_DMA; |
| 692 | outb(0x34, dev->iobase + PCL816_CONTROL); // Ext trig+IRQ+DMA |
| 693 | outb(dmairq, dev->iobase + PCL816_STATUS); // write irq to card |
| 694 | break; |
| 695 | } |
| 696 | |
| 697 | DPRINTK("pcl816 END: pcl812_ai_cmd()\n"); |
| 698 | return 0; |
| 699 | } |
| 700 | |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 701 | static int pcl816_ai_poll(struct comedi_device * dev, struct comedi_subdevice * s) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 702 | { |
| 703 | unsigned long flags; |
| 704 | unsigned int top1, top2, i; |
| 705 | |
| 706 | if (!devpriv->dma) |
| 707 | return 0; // poll is valid only for DMA transfer |
| 708 | |
| 709 | comedi_spin_lock_irqsave(&dev->spinlock, flags); |
| 710 | |
| 711 | for (i = 0; i < 20; i++) { |
| 712 | top1 = get_dma_residue(devpriv->dma); // where is now DMA |
| 713 | top2 = get_dma_residue(devpriv->dma); |
| 714 | if (top1 == top2) |
| 715 | break; |
| 716 | } |
| 717 | if (top1 != top2) { |
| 718 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); |
| 719 | return 0; |
| 720 | } |
| 721 | |
| 722 | top1 = devpriv->hwdmasize[0] - top1; // where is now DMA in buffer |
| 723 | top1 >>= 1; // sample position |
| 724 | top2 = top1 - devpriv->ai_poll_ptr; |
| 725 | if (top2 < 1) { // no new samples |
| 726 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); |
| 727 | return 0; |
| 728 | } |
| 729 | |
| 730 | transfer_from_dma_buf(dev, s, |
Bill Pemberton | 790c554 | 2009-03-16 22:05:02 -0400 | [diff] [blame] | 731 | (short *) devpriv->dmabuf[devpriv->next_dma_buf], |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 732 | devpriv->ai_poll_ptr, top2); |
| 733 | |
| 734 | devpriv->ai_poll_ptr = top1; // new buffer position |
| 735 | comedi_spin_unlock_irqrestore(&dev->spinlock, flags); |
| 736 | |
| 737 | return s->async->buf_write_count - s->async->buf_read_count; |
| 738 | } |
| 739 | |
| 740 | /* |
| 741 | ============================================================================== |
| 742 | cancel any mode 1-4 AI |
| 743 | */ |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 744 | static int pcl816_ai_cancel(struct comedi_device * dev, struct comedi_subdevice * s) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 745 | { |
| 746 | // DEBUG(rt_printk("pcl816_ai_cancel()\n");) |
| 747 | |
| 748 | if (devpriv->irq_blocked > 0) { |
| 749 | switch (devpriv->int816_mode) { |
| 750 | #ifdef unused |
| 751 | case INT_TYPE_AI1_DMA_RTC: |
| 752 | case INT_TYPE_AI3_DMA_RTC: |
| 753 | set_rtc_irq_bit(0); // stop RTC |
| 754 | del_timer(&devpriv->rtc_irq_timer); |
| 755 | #endif |
| 756 | case INT_TYPE_AI1_DMA: |
| 757 | case INT_TYPE_AI3_DMA: |
| 758 | disable_dma(devpriv->dma); |
| 759 | case INT_TYPE_AI1_INT: |
| 760 | case INT_TYPE_AI3_INT: |
| 761 | outb(inb(dev->iobase + PCL816_CONTROL) & 0x73, dev->iobase + PCL816_CONTROL); /* Stop A/D */ |
| 762 | comedi_udelay(1); |
| 763 | outb(0, dev->iobase + PCL816_CONTROL); /* Stop A/D */ |
| 764 | outb(0xb0, dev->iobase + PCL816_CTRCTL); /* Stop pacer */ |
| 765 | outb(0x70, dev->iobase + PCL816_CTRCTL); |
| 766 | outb(0, dev->iobase + PCL816_AD_LO); |
| 767 | inb(dev->iobase + PCL816_AD_LO); |
| 768 | inb(dev->iobase + PCL816_AD_HI); |
| 769 | outb(0, dev->iobase + PCL816_CLRINT); /* clear INT request */ |
| 770 | outb(0, dev->iobase + PCL816_CONTROL); /* Stop A/D */ |
| 771 | devpriv->irq_blocked = 0; |
| 772 | devpriv->irq_was_now_closed = devpriv->int816_mode; |
| 773 | devpriv->int816_mode = 0; |
| 774 | devpriv->last_int_sub = s; |
| 775 | // s->busy = 0; |
| 776 | break; |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | DEBUG(rt_printk("comedi: pcl816_ai_cancel() successful\n"); |
| 781 | ) |
| 782 | return 0; |
| 783 | } |
| 784 | |
| 785 | /* |
| 786 | ============================================================================== |
| 787 | chech for PCL816 |
| 788 | */ |
| 789 | static int pcl816_check(unsigned long iobase) |
| 790 | { |
| 791 | outb(0x00, iobase + PCL816_MUX); |
| 792 | comedi_udelay(1); |
| 793 | if (inb(iobase + PCL816_MUX) != 0x00) |
| 794 | return 1; //there isn't card |
| 795 | outb(0x55, iobase + PCL816_MUX); |
| 796 | comedi_udelay(1); |
| 797 | if (inb(iobase + PCL816_MUX) != 0x55) |
| 798 | return 1; //there isn't card |
| 799 | outb(0x00, iobase + PCL816_MUX); |
| 800 | comedi_udelay(1); |
| 801 | outb(0x18, iobase + PCL816_CONTROL); |
| 802 | comedi_udelay(1); |
| 803 | if (inb(iobase + PCL816_CONTROL) != 0x18) |
| 804 | return 1; //there isn't card |
| 805 | return 0; // ok, card exist |
| 806 | } |
| 807 | |
| 808 | /* |
| 809 | ============================================================================== |
| 810 | reset whole PCL-816 cards |
| 811 | */ |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 812 | static void pcl816_reset(struct comedi_device * dev) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 813 | { |
| 814 | // outb (0, dev->iobase + PCL818_DA_LO); // DAC=0V |
| 815 | // outb (0, dev->iobase + PCL818_DA_HI); |
| 816 | // comedi_udelay (1); |
| 817 | // outb (0, dev->iobase + PCL818_DO_HI); // DO=$0000 |
| 818 | // outb (0, dev->iobase + PCL818_DO_LO); |
| 819 | // comedi_udelay (1); |
| 820 | outb(0, dev->iobase + PCL816_CONTROL); |
| 821 | outb(0, dev->iobase + PCL816_MUX); |
| 822 | outb(0, dev->iobase + PCL816_CLRINT); |
| 823 | outb(0xb0, dev->iobase + PCL816_CTRCTL); /* Stop pacer */ |
| 824 | outb(0x70, dev->iobase + PCL816_CTRCTL); |
| 825 | outb(0x30, dev->iobase + PCL816_CTRCTL); |
| 826 | outb(0, dev->iobase + PCL816_RANGE); |
| 827 | } |
| 828 | |
| 829 | /* |
| 830 | ============================================================================== |
| 831 | Start/stop pacer onboard pacer |
| 832 | */ |
| 833 | static void |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 834 | start_pacer(struct comedi_device * dev, int mode, unsigned int divisor1, |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 835 | unsigned int divisor2) |
| 836 | { |
| 837 | outb(0x32, dev->iobase + PCL816_CTRCTL); |
| 838 | outb(0xff, dev->iobase + PCL816_CTR0); |
| 839 | outb(0x00, dev->iobase + PCL816_CTR0); |
| 840 | comedi_udelay(1); |
| 841 | outb(0xb4, dev->iobase + PCL816_CTRCTL); // set counter 2 as mode 3 |
| 842 | outb(0x74, dev->iobase + PCL816_CTRCTL); // set counter 1 as mode 3 |
| 843 | comedi_udelay(1); |
| 844 | |
| 845 | if (mode == 1) { |
| 846 | DPRINTK("mode %d, divisor1 %d, divisor2 %d\n", mode, divisor1, |
| 847 | divisor2); |
| 848 | outb(divisor2 & 0xff, dev->iobase + PCL816_CTR2); |
| 849 | outb((divisor2 >> 8) & 0xff, dev->iobase + PCL816_CTR2); |
| 850 | outb(divisor1 & 0xff, dev->iobase + PCL816_CTR1); |
| 851 | outb((divisor1 >> 8) & 0xff, dev->iobase + PCL816_CTR1); |
| 852 | } |
| 853 | |
| 854 | /* clear pending interrupts (just in case) */ |
| 855 | // outb(0, dev->iobase + PCL816_CLRINT); |
| 856 | } |
| 857 | |
| 858 | /* |
| 859 | ============================================================================== |
| 860 | Check if channel list from user is builded correctly |
| 861 | If it's ok, then program scan/gain logic |
| 862 | */ |
| 863 | static int |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 864 | check_and_setup_channel_list(struct comedi_device * dev, struct comedi_subdevice * s, |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 865 | unsigned int *chanlist, int chanlen) |
| 866 | { |
| 867 | unsigned int chansegment[16]; |
| 868 | unsigned int i, nowmustbechan, seglen, segpos; |
| 869 | |
| 870 | // correct channel and range number check itself comedi/range.c |
| 871 | if (chanlen < 1) { |
| 872 | comedi_error(dev, "range/channel list is empty!"); |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | if (chanlen > 1) { |
| 877 | chansegment[0] = chanlist[0]; // first channel is everytime ok |
| 878 | for (i = 1, seglen = 1; i < chanlen; i++, seglen++) { |
| 879 | // build part of chanlist |
| 880 | DEBUG(rt_printk("%d. %d %d\n", i, CR_CHAN(chanlist[i]), |
| 881 | CR_RANGE(chanlist[i])); |
| 882 | ) |
| 883 | if (chanlist[0] == chanlist[i]) |
| 884 | break; // we detect loop, this must by finish |
| 885 | nowmustbechan = |
| 886 | (CR_CHAN(chansegment[i - 1]) + 1) % chanlen; |
| 887 | if (nowmustbechan != CR_CHAN(chanlist[i])) { |
| 888 | // channel list isn't continous :-( |
| 889 | rt_printk |
| 890 | ("comedi%d: pcl816: channel list must be continous! chanlist[%i]=%d but must be %d or %d!\n", |
| 891 | dev->minor, i, CR_CHAN(chanlist[i]), |
| 892 | nowmustbechan, CR_CHAN(chanlist[0])); |
| 893 | return 0; |
| 894 | } |
| 895 | chansegment[i] = chanlist[i]; // well, this is next correct channel in list |
| 896 | } |
| 897 | |
| 898 | for (i = 0, segpos = 0; i < chanlen; i++) { // check whole chanlist |
| 899 | DEBUG(rt_printk("%d %d=%d %d\n", |
| 900 | CR_CHAN(chansegment[i % seglen]), |
| 901 | CR_RANGE(chansegment[i % seglen]), |
| 902 | CR_CHAN(chanlist[i]), |
| 903 | CR_RANGE(chanlist[i])); |
| 904 | ) |
| 905 | if (chanlist[i] != chansegment[i % seglen]) { |
| 906 | rt_printk |
| 907 | ("comedi%d: pcl816: bad channel or range number! chanlist[%i]=%d,%d,%d and not %d,%d,%d!\n", |
| 908 | dev->minor, i, CR_CHAN(chansegment[i]), |
| 909 | CR_RANGE(chansegment[i]), |
| 910 | CR_AREF(chansegment[i]), |
| 911 | CR_CHAN(chanlist[i % seglen]), |
| 912 | CR_RANGE(chanlist[i % seglen]), |
| 913 | CR_AREF(chansegment[i % seglen])); |
| 914 | return 0; // chan/gain list is strange |
| 915 | } |
| 916 | } |
| 917 | } else { |
| 918 | seglen = 1; |
| 919 | } |
| 920 | |
| 921 | devpriv->ai_act_chanlist_len = seglen; |
| 922 | devpriv->ai_act_chanlist_pos = 0; |
| 923 | |
| 924 | for (i = 0; i < seglen; i++) { // store range list to card |
| 925 | devpriv->ai_act_chanlist[i] = CR_CHAN(chanlist[i]); |
| 926 | outb(CR_CHAN(chanlist[0]) & 0xf, dev->iobase + PCL816_MUX); |
| 927 | outb(CR_RANGE(chanlist[0]), dev->iobase + PCL816_RANGE); /* select gain */ |
| 928 | } |
| 929 | |
| 930 | comedi_udelay(1); |
| 931 | |
| 932 | outb(devpriv->ai_act_chanlist[0] | (devpriv->ai_act_chanlist[seglen - 1] << 4), dev->iobase + PCL816_MUX); /* select channel interval to scan */ |
| 933 | |
| 934 | return 1; // we can serve this with MUX logic |
| 935 | } |
| 936 | |
| 937 | #ifdef unused |
| 938 | /* |
| 939 | ============================================================================== |
| 940 | Enable(1)/disable(0) periodic interrupts from RTC |
| 941 | */ |
| 942 | static int set_rtc_irq_bit(unsigned char bit) |
| 943 | { |
| 944 | unsigned char val; |
| 945 | unsigned long flags; |
| 946 | |
| 947 | if (bit == 1) { |
| 948 | RTC_timer_lock++; |
| 949 | if (RTC_timer_lock > 1) |
| 950 | return 0; |
| 951 | } else { |
| 952 | RTC_timer_lock--; |
| 953 | if (RTC_timer_lock < 0) |
| 954 | RTC_timer_lock = 0; |
| 955 | if (RTC_timer_lock > 0) |
| 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | save_flags(flags); |
| 960 | cli(); |
| 961 | val = CMOS_READ(RTC_CONTROL); |
| 962 | if (bit) { |
| 963 | val |= RTC_PIE; |
| 964 | } else { |
| 965 | val &= ~RTC_PIE; |
| 966 | } |
| 967 | CMOS_WRITE(val, RTC_CONTROL); |
| 968 | CMOS_READ(RTC_INTR_FLAGS); |
| 969 | restore_flags(flags); |
| 970 | return 0; |
| 971 | } |
| 972 | #endif |
| 973 | |
| 974 | /* |
| 975 | ============================================================================== |
| 976 | Free any resources that we have claimed |
| 977 | */ |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 978 | static void free_resources(struct comedi_device * dev) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 979 | { |
| 980 | //rt_printk("free_resource()\n"); |
| 981 | if (dev->private) { |
| 982 | pcl816_ai_cancel(dev, devpriv->sub_ai); |
| 983 | pcl816_reset(dev); |
| 984 | if (devpriv->dma) |
| 985 | free_dma(devpriv->dma); |
| 986 | if (devpriv->dmabuf[0]) |
| 987 | free_pages(devpriv->dmabuf[0], devpriv->dmapages[0]); |
| 988 | if (devpriv->dmabuf[1]) |
| 989 | free_pages(devpriv->dmabuf[1], devpriv->dmapages[1]); |
| 990 | #ifdef unused |
| 991 | if (devpriv->rtc_irq) |
| 992 | comedi_free_irq(devpriv->rtc_irq, dev); |
| 993 | if ((devpriv->dma_rtc) && (RTC_lock == 1)) { |
| 994 | if (devpriv->rtc_iobase) |
| 995 | release_region(devpriv->rtc_iobase, |
| 996 | devpriv->rtc_iosize); |
| 997 | } |
| 998 | #endif |
| 999 | } |
| 1000 | |
| 1001 | if (dev->irq) |
| 1002 | free_irq(dev->irq, dev); |
| 1003 | if (dev->iobase) |
| 1004 | release_region(dev->iobase, this_board->io_range); |
| 1005 | //rt_printk("free_resource() end\n"); |
| 1006 | } |
| 1007 | |
| 1008 | /* |
| 1009 | ============================================================================== |
| 1010 | |
| 1011 | Initialization |
| 1012 | |
| 1013 | */ |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 1014 | static int pcl816_attach(struct comedi_device * dev, comedi_devconfig * it) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 1015 | { |
| 1016 | int ret; |
| 1017 | unsigned long iobase; |
| 1018 | unsigned int irq, dma; |
| 1019 | unsigned long pages; |
| 1020 | //int i; |
Bill Pemberton | 34c4392 | 2009-03-16 22:05:14 -0400 | [diff] [blame^] | 1021 | struct comedi_subdevice *s; |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 1022 | |
| 1023 | /* claim our I/O space */ |
| 1024 | iobase = it->options[0]; |
| 1025 | printk("comedi%d: pcl816: board=%s, ioport=0x%03lx", dev->minor, |
| 1026 | this_board->name, iobase); |
| 1027 | |
| 1028 | if (!request_region(iobase, this_board->io_range, "pcl816")) { |
| 1029 | rt_printk("I/O port conflict\n"); |
| 1030 | return -EIO; |
| 1031 | } |
| 1032 | |
| 1033 | dev->iobase = iobase; |
| 1034 | |
| 1035 | if (pcl816_check(iobase)) { |
| 1036 | rt_printk(", I cann't detect board. FAIL!\n"); |
| 1037 | return -EIO; |
| 1038 | } |
| 1039 | |
| 1040 | if ((ret = alloc_private(dev, sizeof(pcl816_private))) < 0) |
| 1041 | return ret; /* Can't alloc mem */ |
| 1042 | |
| 1043 | /* set up some name stuff */ |
| 1044 | dev->board_name = this_board->name; |
| 1045 | |
| 1046 | /* grab our IRQ */ |
| 1047 | irq = 0; |
| 1048 | if (this_board->IRQbits != 0) { /* board support IRQ */ |
| 1049 | irq = it->options[1]; |
| 1050 | if (irq) { /* we want to use IRQ */ |
| 1051 | if (((1 << irq) & this_board->IRQbits) == 0) { |
| 1052 | rt_printk |
| 1053 | (", IRQ %u is out of allowed range, DISABLING IT", |
| 1054 | irq); |
| 1055 | irq = 0; /* Bad IRQ */ |
| 1056 | } else { |
| 1057 | if (comedi_request_irq(irq, interrupt_pcl816, 0, |
| 1058 | "pcl816", dev)) { |
| 1059 | rt_printk |
| 1060 | (", unable to allocate IRQ %u, DISABLING IT", |
| 1061 | irq); |
| 1062 | irq = 0; /* Can't use IRQ */ |
| 1063 | } else { |
| 1064 | rt_printk(", irq=%u", irq); |
| 1065 | } |
| 1066 | } |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | dev->irq = irq; |
| 1071 | if (irq) { |
| 1072 | devpriv->irq_free = 1; |
| 1073 | } /* 1=we have allocated irq */ |
| 1074 | else { |
| 1075 | devpriv->irq_free = 0; |
| 1076 | } |
| 1077 | devpriv->irq_blocked = 0; /* number of subdevice which use IRQ */ |
| 1078 | devpriv->int816_mode = 0; /* mode of irq */ |
| 1079 | |
| 1080 | #ifdef unused |
| 1081 | /* grab RTC for DMA operations */ |
| 1082 | devpriv->dma_rtc = 0; |
| 1083 | if (it->options[2] > 0) { // we want to use DMA |
| 1084 | if (RTC_lock == 0) { |
| 1085 | if (!request_region(RTC_PORT(0), RTC_IO_EXTENT, |
| 1086 | "pcl816 (RTC)")) |
| 1087 | goto no_rtc; |
| 1088 | } |
| 1089 | devpriv->rtc_iobase = RTC_PORT(0); |
| 1090 | devpriv->rtc_iosize = RTC_IO_EXTENT; |
| 1091 | RTC_lock++; |
| 1092 | #ifdef UNTESTED_CODE |
| 1093 | if (!comedi_request_irq(RTC_IRQ, |
| 1094 | interrupt_pcl816_ai_mode13_dma_rtc, 0, |
| 1095 | "pcl816 DMA (RTC)", dev)) { |
| 1096 | devpriv->dma_rtc = 1; |
| 1097 | devpriv->rtc_irq = RTC_IRQ; |
| 1098 | rt_printk(", dma_irq=%u", devpriv->rtc_irq); |
| 1099 | } else { |
| 1100 | RTC_lock--; |
| 1101 | if (RTC_lock == 0) { |
| 1102 | if (devpriv->rtc_iobase) |
| 1103 | release_region(devpriv->rtc_iobase, |
| 1104 | devpriv->rtc_iosize); |
| 1105 | } |
| 1106 | devpriv->rtc_iobase = 0; |
| 1107 | devpriv->rtc_iosize = 0; |
| 1108 | } |
| 1109 | #else |
| 1110 | printk("pcl816: RTC code missing"); |
| 1111 | #endif |
| 1112 | |
| 1113 | } |
| 1114 | |
| 1115 | no_rtc: |
| 1116 | #endif |
| 1117 | /* grab our DMA */ |
| 1118 | dma = 0; |
| 1119 | devpriv->dma = dma; |
| 1120 | if ((devpriv->irq_free == 0) && (devpriv->dma_rtc == 0)) |
| 1121 | goto no_dma; /* if we haven't IRQ, we can't use DMA */ |
| 1122 | |
| 1123 | if (this_board->DMAbits != 0) { /* board support DMA */ |
| 1124 | dma = it->options[2]; |
| 1125 | if (dma < 1) |
| 1126 | goto no_dma; /* DMA disabled */ |
| 1127 | |
| 1128 | if (((1 << dma) & this_board->DMAbits) == 0) { |
| 1129 | rt_printk(", DMA is out of allowed range, FAIL!\n"); |
| 1130 | return -EINVAL; /* Bad DMA */ |
| 1131 | } |
| 1132 | ret = request_dma(dma, "pcl816"); |
| 1133 | if (ret) { |
| 1134 | rt_printk(", unable to allocate DMA %u, FAIL!\n", dma); |
| 1135 | return -EBUSY; /* DMA isn't free */ |
| 1136 | } |
| 1137 | |
| 1138 | devpriv->dma = dma; |
| 1139 | rt_printk(", dma=%u", dma); |
| 1140 | pages = 2; /* we need 16KB */ |
| 1141 | devpriv->dmabuf[0] = __get_dma_pages(GFP_KERNEL, pages); |
| 1142 | |
| 1143 | if (!devpriv->dmabuf[0]) { |
| 1144 | rt_printk(", unable to allocate DMA buffer, FAIL!\n"); |
| 1145 | /* maybe experiment with try_to_free_pages() will help .... */ |
| 1146 | return -EBUSY; /* no buffer :-( */ |
| 1147 | } |
| 1148 | devpriv->dmapages[0] = pages; |
| 1149 | devpriv->hwdmaptr[0] = virt_to_bus((void *)devpriv->dmabuf[0]); |
| 1150 | devpriv->hwdmasize[0] = (1 << pages) * PAGE_SIZE; |
| 1151 | //rt_printk("%d %d %ld, ",devpriv->dmapages[0],devpriv->hwdmasize[0],PAGE_SIZE); |
| 1152 | |
| 1153 | if (devpriv->dma_rtc == 0) { // we must do duble buff :-( |
| 1154 | devpriv->dmabuf[1] = __get_dma_pages(GFP_KERNEL, pages); |
| 1155 | if (!devpriv->dmabuf[1]) { |
| 1156 | rt_printk |
| 1157 | (", unable to allocate DMA buffer, FAIL!\n"); |
| 1158 | return -EBUSY; |
| 1159 | } |
| 1160 | devpriv->dmapages[1] = pages; |
| 1161 | devpriv->hwdmaptr[1] = |
| 1162 | virt_to_bus((void *)devpriv->dmabuf[1]); |
| 1163 | devpriv->hwdmasize[1] = (1 << pages) * PAGE_SIZE; |
| 1164 | } |
| 1165 | } |
| 1166 | |
| 1167 | no_dma: |
| 1168 | |
| 1169 | /* if (this_board->n_aochan > 0) |
| 1170 | subdevs[1] = COMEDI_SUBD_AO; |
| 1171 | if (this_board->n_dichan > 0) |
| 1172 | subdevs[2] = COMEDI_SUBD_DI; |
| 1173 | if (this_board->n_dochan > 0) |
| 1174 | subdevs[3] = COMEDI_SUBD_DO; |
| 1175 | */ |
| 1176 | if ((ret = alloc_subdevices(dev, 1)) < 0) |
| 1177 | return ret; |
| 1178 | |
| 1179 | s = dev->subdevices + 0; |
| 1180 | if (this_board->n_aichan > 0) { |
| 1181 | s->type = COMEDI_SUBD_AI; |
| 1182 | devpriv->sub_ai = s; |
| 1183 | dev->read_subdev = s; |
| 1184 | s->subdev_flags = SDF_READABLE | SDF_CMD_READ; |
| 1185 | s->n_chan = this_board->n_aichan; |
| 1186 | s->subdev_flags |= SDF_DIFF; |
| 1187 | //printk (", %dchans DIFF DAC - %d", s->n_chan, i); |
| 1188 | s->maxdata = this_board->ai_maxdata; |
| 1189 | s->len_chanlist = this_board->ai_chanlist; |
| 1190 | s->range_table = this_board->ai_range_type; |
| 1191 | s->cancel = pcl816_ai_cancel; |
| 1192 | s->do_cmdtest = pcl816_ai_cmdtest; |
| 1193 | s->do_cmd = pcl816_ai_cmd; |
| 1194 | s->poll = pcl816_ai_poll; |
| 1195 | s->insn_read = pcl816_ai_insn_read; |
| 1196 | } else { |
| 1197 | s->type = COMEDI_SUBD_UNUSED; |
| 1198 | } |
| 1199 | |
| 1200 | #if 0 |
| 1201 | case COMEDI_SUBD_AO: |
| 1202 | s->subdev_flags = SDF_WRITABLE | SDF_GROUND; |
| 1203 | s->n_chan = this_board->n_aochan; |
| 1204 | s->maxdata = this_board->ao_maxdata; |
| 1205 | s->len_chanlist = this_board->ao_chanlist; |
| 1206 | s->range_table = this_board->ao_range_type; |
| 1207 | break; |
| 1208 | |
| 1209 | case COMEDI_SUBD_DI: |
| 1210 | s->subdev_flags = SDF_READABLE; |
| 1211 | s->n_chan = this_board->n_dichan; |
| 1212 | s->maxdata = 1; |
| 1213 | s->len_chanlist = this_board->n_dichan; |
| 1214 | s->range_table = &range_digital; |
| 1215 | break; |
| 1216 | |
| 1217 | case COMEDI_SUBD_DO: |
| 1218 | s->subdev_flags = SDF_WRITABLE; |
| 1219 | s->n_chan = this_board->n_dochan; |
| 1220 | s->maxdata = 1; |
| 1221 | s->len_chanlist = this_board->n_dochan; |
| 1222 | s->range_table = &range_digital; |
| 1223 | break; |
| 1224 | #endif |
| 1225 | |
| 1226 | pcl816_reset(dev); |
| 1227 | |
| 1228 | rt_printk("\n"); |
| 1229 | |
| 1230 | return 0; |
| 1231 | } |
| 1232 | |
| 1233 | /* |
| 1234 | ============================================================================== |
| 1235 | Removes device |
| 1236 | */ |
Bill Pemberton | 71b5f4f | 2009-03-16 22:05:08 -0400 | [diff] [blame] | 1237 | static int pcl816_detach(struct comedi_device * dev) |
Juan Grigera | dd2996b | 2009-02-19 09:30:57 -0800 | [diff] [blame] | 1238 | { |
| 1239 | DEBUG(rt_printk("comedi%d: pcl816: remove\n", dev->minor); |
| 1240 | ) |
| 1241 | free_resources(dev); |
| 1242 | #ifdef unused |
| 1243 | if (devpriv->dma_rtc) |
| 1244 | RTC_lock--; |
| 1245 | #endif |
| 1246 | return 0; |
| 1247 | } |