diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/pcl812.c')
| -rw-r--r-- | drivers/staging/comedi/drivers/pcl812.c | 1605 |
1 files changed, 1605 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/pcl812.c b/drivers/staging/comedi/drivers/pcl812.c new file mode 100644 index 000000000000..11dfd230e565 --- /dev/null +++ b/drivers/staging/comedi/drivers/pcl812.c @@ -0,0 +1,1605 @@ +/* + * comedi/drivers/pcl812.c + * + * Author: Michal Dobes <dobes@tesnet.cz> + * + * hardware driver for Advantech cards + * card: PCL-812, PCL-812PG, PCL-813, PCL-813B + * driver: pcl812, pcl812pg, pcl813, pcl813b + * and for ADlink cards + * card: ACL-8112DG, ACL-8112HG, ACL-8112PG, ACL-8113, ACL-8216 + * driver: acl8112dg, acl8112hg, acl8112pg, acl8113, acl8216 + * and for ICP DAS cards + * card: ISO-813, A-821PGH, A-821PGL, A-821PGL-NDA, A-822PGH, A-822PGL, + * driver: iso813, a821pgh, a-821pgl, a-821pglnda, a822pgh, a822pgl, + * card: A-823PGH, A-823PGL, A-826PG + * driver: a823pgh, a823pgl, a826pg + */ +/* +Driver: pcl812 +Description: Advantech PCL-812/PG, PCL-813/B, + ADLink ACL-8112DG/HG/PG, ACL-8113, ACL-8216, + ICP DAS A-821PGH/PGL/PGL-NDA, A-822PGH/PGL, A-823PGH/PGL, A-826PG, + ICP DAS ISO-813 +Author: Michal Dobes <dobes@tesnet.cz> +Devices: [Advantech] PCL-812 (pcl812), PCL-812PG (pcl812pg), + PCL-813 (pcl813), PCL-813B (pcl813b), [ADLink] ACL-8112DG (acl8112dg), + ACL-8112HG (acl8112hg), ACL-8113 (acl-8113), ACL-8216 (acl8216), + [ICP] ISO-813 (iso813), A-821PGH (a821pgh), A-821PGL (a821pgl), + A-821PGL-NDA (a821pclnda), A-822PGH (a822pgh), A-822PGL (a822pgl), + A-823PGH (a823pgh), A-823PGL (a823pgl), A-826PG (a826pg) +Updated: Mon, 06 Aug 2007 12:03:15 +0100 +Status: works (I hope. My board fire up under my hands + and I cann't test all features.) + +This driver supports insn and cmd interfaces. Some boards support only insn +becouse their hardware don't allow more (PCL-813/B, ACL-8113, ISO-813). +Data transfer over DMA is supported only when you measure only one +channel, this is too hardware limitation of these boards. + +Options for PCL-812: + [0] - IO Base + [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15) + [2] - DMA (0=disable, 1, 3) + [3] - 0=trigger source is internal 8253 with 2MHz clock + 1=trigger source is external + [4] - 0=A/D input range is +/-10V + 1=A/D input range is +/-5V + 2=A/D input range is +/-2.5V + 3=A/D input range is +/-1.25V + 4=A/D input range is +/-0.625V + 5=A/D input range is +/-0.3125V + [5] - 0=D/A outputs 0-5V (internal reference -5V) + 1=D/A outputs 0-10V (internal reference -10V) + 2=D/A outputs unknow (external reference) + +Options for PCL-812PG, ACL-8112PG: + [0] - IO Base + [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15) + [2] - DMA (0=disable, 1, 3) + [3] - 0=trigger source is internal 8253 with 2MHz clock + 1=trigger source is external + [4] - 0=A/D have max +/-5V input + 1=A/D have max +/-10V input + [5] - 0=D/A outputs 0-5V (internal reference -5V) + 1=D/A outputs 0-10V (internal reference -10V) + 2=D/A outputs unknow (external reference) + +Options for ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH, ACL-8216, A-826PG: + [0] - IO Base + [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15) + [2] - DMA (0=disable, 1, 3) + [3] - 0=trigger source is internal 8253 with 2MHz clock + 1=trigger source is external + [4] - 0=A/D channels are S.E. + 1=A/D channels are DIFF + [5] - 0=D/A outputs 0-5V (internal reference -5V) + 1=D/A outputs 0-10V (internal reference -10V) + 2=D/A outputs unknow (external reference) + +Options for A-821PGL/PGH: + [0] - IO Base + [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7) + [2] - 0=A/D channels are S.E. + 1=A/D channels are DIFF + [3] - 0=D/A output 0-5V (internal reference -5V) + 1=D/A output 0-10V (internal reference -10V) + +Options for A-821PGL-NDA: + [0] - IO Base + [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7) + [2] - 0=A/D channels are S.E. + 1=A/D channels are DIFF + +Options for PCL-813: + [0] - IO Base + +Options for PCL-813B: + [0] - IO Base + [1] - 0= bipolar inputs + 1= unipolar inputs + +Options for ACL-8113, ISO-813: + [0] - IO Base + [1] - 0= 10V bipolar inputs + 1= 10V unipolar inputs + 2= 20V bipolar inputs + 3= 20V unipolar inputs +*/ + +#include "../comedidev.h" + +#include <linux/delay.h> +#include <linux/ioport.h> +#include <asm/dma.h> + +#include "8253.h" + +#undef PCL812_EXTDEBUG /* if this is defined then a lot of messages is printed */ + +// hardware types of the cards +#define boardPCL812PG 0 /* and ACL-8112PG */ +#define boardPCL813B 1 +#define boardPCL812 2 +#define boardPCL813 3 +#define boardISO813 5 +#define boardACL8113 6 +#define boardACL8112 7 /* ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH */ +#define boardACL8216 8 /* and ICP DAS A-826PG */ +#define boardA821 9 /* PGH, PGL, PGL/NDA versions */ + +#define PCLx1x_IORANGE 16 + +#define PCL812_CTR0 0 +#define PCL812_CTR1 1 +#define PCL812_CTR2 2 +#define PCL812_CTRCTL 3 +#define PCL812_AD_LO 4 +#define PCL812_DA1_LO 4 +#define PCL812_AD_HI 5 +#define PCL812_DA1_HI 5 +#define PCL812_DA2_LO 6 +#define PCL812_DI_LO 6 +#define PCL812_DA2_HI 7 +#define PCL812_DI_HI 7 +#define PCL812_CLRINT 8 +#define PCL812_GAIN 9 +#define PCL812_MUX 10 +#define PCL812_MODE 11 +#define PCL812_CNTENABLE 10 +#define PCL812_SOFTTRIG 12 +#define PCL812_DO_LO 13 +#define PCL812_DO_HI 14 + +#define PCL812_DRDY 0x10 /* =0 data ready */ + +#define ACL8216_STATUS 8 /* 5. bit signalize data ready */ + +#define ACL8216_DRDY 0x20 /* =0 data ready */ + +#define MAX_CHANLIST_LEN 256 /* length of scan list */ + +static const struct comedi_lrange range_pcl812pg_ai = { 5, { + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + BIP_RANGE(0.625), + BIP_RANGE(0.3125), + } +}; +static const struct comedi_lrange range_pcl812pg2_ai = { 5, { + BIP_RANGE(10), + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + BIP_RANGE(0.625), + } +}; +static const struct comedi_lrange range812_bipolar1_25 = { 1, { + BIP_RANGE(1.25), + } +}; +static const struct comedi_lrange range812_bipolar0_625 = { 1, { + BIP_RANGE(0.625), + } +}; +static const struct comedi_lrange range812_bipolar0_3125 = { 1, { + BIP_RANGE(0.3125), + } +}; +static const struct comedi_lrange range_pcl813b_ai = { 4, { + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + BIP_RANGE(0.625), + } +}; +static const struct comedi_lrange range_pcl813b2_ai = { 4, { + UNI_RANGE(10), + UNI_RANGE(5), + UNI_RANGE(2.5), + UNI_RANGE(1.25), + } +}; +static const struct comedi_lrange range_iso813_1_ai = { 5, { + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + BIP_RANGE(0.625), + BIP_RANGE(0.3125), + } +}; +static const struct comedi_lrange range_iso813_1_2_ai = { 5, { + UNI_RANGE(10), + UNI_RANGE(5), + UNI_RANGE(2.5), + UNI_RANGE(1.25), + UNI_RANGE(0.625), + } +}; +static const struct comedi_lrange range_iso813_2_ai = { 4, { + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + BIP_RANGE(0.625), + } +}; +static const struct comedi_lrange range_iso813_2_2_ai = { 4, { + UNI_RANGE(10), + UNI_RANGE(5), + UNI_RANGE(2.5), + UNI_RANGE(1.25), + } +}; +static const struct comedi_lrange range_acl8113_1_ai = { 4, { + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + BIP_RANGE(0.625), + } +}; +static const struct comedi_lrange range_acl8113_1_2_ai = { 4, { + UNI_RANGE(10), + UNI_RANGE(5), + UNI_RANGE(2.5), + UNI_RANGE(1.25), + } +}; +static const struct comedi_lrange range_acl8113_2_ai = { 3, { + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + } +}; +static const struct comedi_lrange range_acl8113_2_2_ai = { 3, { + UNI_RANGE(10), + UNI_RANGE(5), + UNI_RANGE(2.5), + } +}; +static const struct comedi_lrange range_acl8112dg_ai = { 9, { + BIP_RANGE(5), + BIP_RANGE(2.5), + BIP_RANGE(1.25), + BIP_RANGE(0.625), + UNI_RANGE(10), + UNI_RANGE(5), + UNI_RANGE(2.5), + UNI_RANGE(1.25), + BIP_RANGE(10), + } +}; +static const struct comedi_lrange range_acl8112hg_ai = { 12, { + BIP_RANGE(5), + BIP_RANGE(0.5), + BIP_RANGE(0.05), + BIP_RANGE(0.005), + UNI_RANGE(10), + UNI_RANGE(1), + UNI_RANGE(0.1), + UNI_RANGE(0.01), + BIP_RANGE(10), + BIP_RANGE(1), + BIP_RANGE(0.1), + BIP_RANGE(0.01), + } +}; +static const struct comedi_lrange range_a821pgh_ai = { 4, { + BIP_RANGE(5), + BIP_RANGE(0.5), + BIP_RANGE(0.05), + BIP_RANGE(0.005), + } +}; + +static int pcl812_attach(struct comedi_device * dev, struct comedi_devconfig * it); +static int pcl812_detach(struct comedi_device * dev); + +struct pcl812_board { + + const char *name; // board name + int board_type; // type of this board + int n_aichan; // num of AI chans in S.E. + int n_aichan_diff; // DIFF num of chans + int n_aochan; // num of DA chans + int n_dichan; // DI and DO chans + int n_dochan; + int ai_maxdata; // AI resolution + unsigned int ai_ns_min; // max sample speed of card v ns + unsigned int i8254_osc_base; // clock base + const struct comedi_lrange *rangelist_ai; // rangelist for A/D + const struct comedi_lrange *rangelist_ao; // rangelist for D/A + unsigned int IRQbits; // allowed IRQ + unsigned char DMAbits; // allowed DMA chans + unsigned char io_range; // iorange for this board + unsigned char haveMPC508; // 1=board use MPC508A multiplexor +}; + + +static const struct pcl812_board boardtypes[] = { + {"pcl812", boardPCL812, 16, 0, 2, 16, 16, 0x0fff, + 33000, 500, &range_bipolar10, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, + {"pcl812pg", boardPCL812PG, 16, 0, 2, 16, 16, 0x0fff, + 33000, 500, &range_pcl812pg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, + {"acl8112pg", boardPCL812PG, 16, 0, 2, 16, 16, 0x0fff, + 10000, 500, &range_pcl812pg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, + {"acl8112dg", boardACL8112, 16, 8, 2, 16, 16, 0x0fff, + 10000, 500, &range_acl8112dg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 1}, + {"acl8112hg", boardACL8112, 16, 8, 2, 16, 16, 0x0fff, + 10000, 500, &range_acl8112hg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 1}, + {"a821pgl", boardA821, 16, 8, 1, 16, 16, 0x0fff, + 10000, 500, &range_pcl813b_ai, &range_unipolar5, + 0x000c, 0x00, PCLx1x_IORANGE, 0}, + {"a821pglnda", boardA821, 16, 8, 0, 0, 0, 0x0fff, + 10000, 500, &range_pcl813b_ai, NULL, + 0x000c, 0x00, PCLx1x_IORANGE, 0}, + {"a821pgh", boardA821, 16, 8, 1, 16, 16, 0x0fff, + 10000, 500, &range_a821pgh_ai, &range_unipolar5, + 0x000c, 0x00, PCLx1x_IORANGE, 0}, + {"a822pgl", boardACL8112, 16, 8, 2, 16, 16, 0x0fff, + 10000, 500, &range_acl8112dg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, + {"a822pgh", boardACL8112, 16, 8, 2, 16, 16, 0x0fff, + 10000, 500, &range_acl8112hg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, + {"a823pgl", boardACL8112, 16, 8, 2, 16, 16, 0x0fff, + 8000, 500, &range_acl8112dg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, + {"a823pgh", boardACL8112, 16, 8, 2, 16, 16, 0x0fff, + 8000, 500, &range_acl8112hg_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, + {"pcl813", boardPCL813, 32, 0, 0, 0, 0, 0x0fff, + 0, 0, &range_pcl813b_ai, NULL, + 0x0000, 0x00, PCLx1x_IORANGE, 0}, + {"pcl813b", boardPCL813B, 32, 0, 0, 0, 0, 0x0fff, + 0, 0, &range_pcl813b_ai, NULL, + 0x0000, 0x00, PCLx1x_IORANGE, 0}, + {"acl8113", boardACL8113, 32, 0, 0, 0, 0, 0x0fff, + 0, 0, &range_acl8113_1_ai, NULL, + 0x0000, 0x00, PCLx1x_IORANGE, 0}, + {"iso813", boardISO813, 32, 0, 0, 0, 0, 0x0fff, + 0, 0, &range_iso813_1_ai, NULL, + 0x0000, 0x00, PCLx1x_IORANGE, 0}, + {"acl8216", boardACL8216, 16, 8, 2, 16, 16, 0xffff, + 10000, 500, &range_pcl813b2_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 1}, + {"a826pg", boardACL8216, 16, 8, 2, 16, 16, 0xffff, + 10000, 500, &range_pcl813b2_ai, &range_unipolar5, + 0xdcfc, 0x0a, PCLx1x_IORANGE, 0}, +}; + +#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl812_board)) +#define this_board ((const struct pcl812_board *)dev->board_ptr) + +static struct comedi_driver driver_pcl812 = { + driver_name:"pcl812", + module:THIS_MODULE, + attach:pcl812_attach, + detach:pcl812_detach, + board_name:&boardtypes[0].name, + num_names:n_boardtypes, + offset:sizeof(struct pcl812_board), +}; + +COMEDI_INITCLEANUP(driver_pcl812); + +struct pcl812_private { + + unsigned char valid; // =1 device is OK + unsigned char dma; // >0 use dma ( usedDMA channel) + unsigned char use_diff; // =1 diff inputs + unsigned char use_MPC; // 1=board uses MPC508A multiplexor + unsigned char use_ext_trg; // 1=board uses external trigger + unsigned char range_correction; // =1 we must add 1 to range number + unsigned char old_chan_reg; // lastly used chan/gain pair + unsigned char old_gain_reg; + unsigned char mode_reg_int; // there is stored INT number for some card + unsigned char ai_neverending; // =1 we do unlimited AI + unsigned char ai_eos; // 1=EOS wake up + unsigned char ai_dma; // =1 we use DMA + unsigned int ai_poll_ptr; // how many sampes transfer poll + unsigned int ai_scans; // len of scanlist + unsigned int ai_act_scan; // how many scans we finished + unsigned int ai_chanlist[MAX_CHANLIST_LEN]; // our copy of channel/range list + unsigned int ai_n_chan; // how many channels is measured + unsigned int ai_flags; // flaglist + unsigned int ai_data_len; // len of data buffer + short *ai_data; // data buffer + unsigned int ai_is16b; // =1 we have 16 bit card + unsigned long dmabuf[2]; // PTR to DMA buf + unsigned int dmapages[2]; // how many pages we have allocated + unsigned int hwdmaptr[2]; // HW PTR to DMA buf + unsigned int hwdmasize[2]; // DMA buf size in bytes + unsigned int dmabytestomove[2]; // how many bytes DMA transfer + int next_dma_buf; // which buffer is next to use + unsigned int dma_runs_to_end; // how many times we must switch DMA buffers + unsigned int last_dma_run; // how many bytes to transfer on last DMA buffer + unsigned int max_812_ai_mode0_rangewait; // setling time for gain + unsigned int ao_readback[2]; // data for AO readback +}; + + +#define devpriv ((struct pcl812_private *)dev->private) + +/* +============================================================================== +*/ +static void start_pacer(struct comedi_device * dev, int mode, unsigned int divisor1, + unsigned int divisor2); +static void setup_range_channel(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int rangechan, char wait); +static int pcl812_ai_cancel(struct comedi_device * dev, struct comedi_subdevice * s); +/* +============================================================================== +*/ +static int pcl812_ai_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int n; + int timeout, hi; + + outb(devpriv->mode_reg_int | 1, dev->iobase + PCL812_MODE); /* select software trigger */ + setup_range_channel(dev, s, insn->chanspec, 1); // select channel and renge + for (n = 0; n < insn->n; n++) { + outb(255, dev->iobase + PCL812_SOFTTRIG); /* start conversion */ + comedi_udelay(5); + timeout = 50; /* wait max 50us, it must finish under 33us */ + while (timeout--) { + hi = inb(dev->iobase + PCL812_AD_HI); + if (!(hi & PCL812_DRDY)) + goto conv_finish; + comedi_udelay(1); + } + rt_printk + ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n", + dev->minor, dev->board_name, dev->iobase); + outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE); + return -ETIME; + + conv_finish: + data[n] = ((hi & 0xf) << 8) | inb(dev->iobase + PCL812_AD_LO); + } + outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE); + return n; +} + +/* +============================================================================== +*/ +static int acl8216_ai_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int n; + int timeout; + + outb(1, dev->iobase + PCL812_MODE); /* select software trigger */ + setup_range_channel(dev, s, insn->chanspec, 1); // select channel and renge + for (n = 0; n < insn->n; n++) { + outb(255, dev->iobase + PCL812_SOFTTRIG); /* start conversion */ + comedi_udelay(5); + timeout = 50; /* wait max 50us, it must finish under 33us */ + while (timeout--) { + if (!(inb(dev->iobase + ACL8216_STATUS) & ACL8216_DRDY)) + goto conv_finish; + comedi_udelay(1); + } + rt_printk + ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n", + dev->minor, dev->board_name, dev->iobase); + outb(0, dev->iobase + PCL812_MODE); + return -ETIME; + + conv_finish: + data[n] = + (inb(dev->iobase + + PCL812_AD_HI) << 8) | inb(dev->iobase + + PCL812_AD_LO); + } + outb(0, dev->iobase + PCL812_MODE); + return n; +} + +/* +============================================================================== +*/ +static int pcl812_ao_insn_write(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int chan = CR_CHAN(insn->chanspec); + int i; + + for (i = 0; i < insn->n; i++) { + outb((data[i] & 0xff), + dev->iobase + (chan ? PCL812_DA2_LO : PCL812_DA1_LO)); + outb((data[i] >> 8) & 0x0f, + dev->iobase + (chan ? PCL812_DA2_HI : PCL812_DA1_HI)); + devpriv->ao_readback[chan] = data[i]; + } + + return i; +} + +/* +============================================================================== +*/ +static int pcl812_ao_insn_read(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + int chan = CR_CHAN(insn->chanspec); + int i; + + for (i = 0; i < insn->n; i++) { + data[i] = devpriv->ao_readback[chan]; + } + + return i; +} + +/* +============================================================================== +*/ +static int pcl812_di_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + if (insn->n != 2) + return -EINVAL; + + data[1] = inb(dev->iobase + PCL812_DI_LO); + data[1] |= inb(dev->iobase + PCL812_DI_HI) << 8; + + return 2; +} + +/* +============================================================================== +*/ +static int pcl812_do_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_insn * insn, unsigned int * data) +{ + if (insn->n != 2) + return -EINVAL; + + if (data[0]) { + s->state &= ~data[0]; + s->state |= data[0] & data[1]; + outb(s->state & 0xff, dev->iobase + PCL812_DO_LO); + outb((s->state >> 8), dev->iobase + PCL812_DO_HI); + } + data[1] = s->state; + + return 2; +} + +#ifdef PCL812_EXTDEBUG +/* +============================================================================== +*/ +static void pcl812_cmdtest_out(int e, struct comedi_cmd * cmd) +{ + rt_printk("pcl812 e=%d startsrc=%x scansrc=%x convsrc=%x\n", e, + cmd->start_src, cmd->scan_begin_src, cmd->convert_src); + rt_printk("pcl812 e=%d startarg=%d scanarg=%d convarg=%d\n", e, + cmd->start_arg, cmd->scan_begin_arg, cmd->convert_arg); + rt_printk("pcl812 e=%d stopsrc=%x scanend=%x\n", e, cmd->stop_src, + cmd->scan_end_src); + rt_printk("pcl812 e=%d stoparg=%d scanendarg=%d chanlistlen=%d\n", e, + cmd->stop_arg, cmd->scan_end_arg, cmd->chanlist_len); +} +#endif + +/* +============================================================================== +*/ +static int pcl812_ai_cmdtest(struct comedi_device * dev, struct comedi_subdevice * s, + struct comedi_cmd * cmd) +{ + int err = 0; + int tmp, divisor1, divisor2; + +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...)\n"); + pcl812_cmdtest_out(-1, cmd); +#endif + /* step 1: make sure trigger sources are trivially valid */ + + tmp = cmd->start_src; + cmd->start_src &= TRIG_NOW; + if (!cmd->start_src || tmp != cmd->start_src) + err++; + + tmp = cmd->scan_begin_src; + cmd->scan_begin_src &= TRIG_FOLLOW; + if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) + err++; + + tmp = cmd->convert_src; + if (devpriv->use_ext_trg) { + cmd->convert_src &= TRIG_EXT; + } else { + cmd->convert_src &= TRIG_TIMER; + } + if (!cmd->convert_src || tmp != cmd->convert_src) + err++; + + tmp = cmd->scan_end_src; + cmd->scan_end_src &= TRIG_COUNT; + if (!cmd->scan_end_src || tmp != cmd->scan_end_src) + err++; + + tmp = cmd->stop_src; + cmd->stop_src &= TRIG_COUNT | TRIG_NONE; + if (!cmd->stop_src || tmp != cmd->stop_src) + err++; + + if (err) { +#ifdef PCL812_EXTDEBUG + pcl812_cmdtest_out(1, cmd); + rt_printk + ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=1\n", + err); +#endif + return 1; + } + + /* step 2: make sure trigger sources are unique and mutually compatible */ + + if (cmd->start_src != TRIG_NOW) { + cmd->start_src = TRIG_NOW; + err++; + } + + if (cmd->scan_begin_src != TRIG_FOLLOW) { + cmd->scan_begin_src = TRIG_FOLLOW; + err++; + } + + if (devpriv->use_ext_trg) { + if (cmd->convert_src != TRIG_EXT) { + cmd->convert_src = TRIG_EXT; + err++; + } + } else { + if (cmd->convert_src != TRIG_TIMER) { + cmd->convert_src = TRIG_TIMER; + err++; + } + } + + if (cmd->scan_end_src != TRIG_COUNT) { + cmd->scan_end_src = TRIG_COUNT; + err++; + } + + if (cmd->stop_src != TRIG_NONE && cmd->stop_src != TRIG_COUNT) + err++; + + if (err) { +#ifdef PCL812_EXTDEBUG + pcl812_cmdtest_out(2, cmd); + rt_printk + ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=2\n", + err); +#endif + return 2; + } + + /* step 3: make sure arguments are trivially compatible */ + + if (cmd->start_arg != 0) { + cmd->start_arg = 0; + err++; + } + + if (cmd->scan_begin_arg != 0) { + cmd->scan_begin_arg = 0; + err++; + } + + if (cmd->convert_src == TRIG_TIMER) { + if (cmd->convert_arg < this_board->ai_ns_min) { + cmd->convert_arg = this_board->ai_ns_min; + err++; + } + } else { /* TRIG_EXT */ + if (cmd->convert_arg != 0) { + cmd->convert_arg = 0; + err++; + } + } + + if (!cmd->chanlist_len) { + cmd->chanlist_len = 1; + err++; + } + if (cmd->chanlist_len > MAX_CHANLIST_LEN) { + cmd->chanlist_len = this_board->n_aichan; + err++; + } + if (cmd->scan_end_arg != cmd->chanlist_len) { + cmd->scan_end_arg = cmd->chanlist_len; + err++; + } + if (cmd->stop_src == TRIG_COUNT) { + if (!cmd->stop_arg) { + cmd->stop_arg = 1; + err++; + } + } else { /* TRIG_NONE */ + if (cmd->stop_arg != 0) { + cmd->stop_arg = 0; + err++; + } + } + + if (err) { +#ifdef PCL812_EXTDEBUG + pcl812_cmdtest_out(3, cmd); + rt_printk + ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=3\n", + err); +#endif + return 3; + } + + /* step 4: fix up any arguments */ + + if (cmd->convert_src == TRIG_TIMER) { + tmp = cmd->convert_arg; + i8253_cascade_ns_to_timer(this_board->i8254_osc_base, &divisor1, + &divisor2, &cmd->convert_arg, + cmd->flags & TRIG_ROUND_MASK); + if (cmd->convert_arg < this_board->ai_ns_min) + cmd->convert_arg = this_board->ai_ns_min; + if (tmp != cmd->convert_arg) + err++; + } + + if (err) { +#ifdef PCL812_EXTDEBUG + rt_printk + ("pcl812 EDBG: BGN: pcl812_ai_cmdtest(...) err=%d ret=4\n", + err); +#endif + return 4; + } + + return 0; +} + +/* +============================================================================== +*/ +static int pcl812_ai_cmd(struct comedi_device * dev, struct comedi_subdevice * s) +{ + unsigned int divisor1 = 0, divisor2 = 0, i, dma_flags, bytes; + struct comedi_cmd *cmd = &s->async->cmd; + +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: BGN: pcl812_ai_cmd(...)\n"); +#endif + + if (cmd->start_src != TRIG_NOW) + return -EINVAL; + if (cmd->scan_begin_src != TRIG_FOLLOW) + return -EINVAL; + if (devpriv->use_ext_trg) { + if (cmd->convert_src != TRIG_EXT) + return -EINVAL; + } else { + if (cmd->convert_src != TRIG_TIMER) + return -EINVAL; + } + if (cmd->scan_end_src != TRIG_COUNT) + return -EINVAL; + if (cmd->scan_end_arg != cmd->chanlist_len) + return -EINVAL; + if (cmd->chanlist_len > MAX_CHANLIST_LEN) + return -EINVAL; + + if (cmd->convert_src == TRIG_TIMER) { + if (cmd->convert_arg < this_board->ai_ns_min) + cmd->convert_arg = this_board->ai_ns_min; + i8253_cascade_ns_to_timer(this_board->i8254_osc_base, + &divisor1, &divisor2, &cmd->convert_arg, + cmd->flags & TRIG_ROUND_MASK); + } + + start_pacer(dev, -1, 0, 0); // stop pacer + + devpriv->ai_n_chan = cmd->chanlist_len; + memcpy(devpriv->ai_chanlist, cmd->chanlist, + sizeof(unsigned int) * cmd->scan_end_arg); + setup_range_channel(dev, s, devpriv->ai_chanlist[0], 1); // select first channel and range + + if (devpriv->dma) { // check if we can use DMA transfer + devpriv->ai_dma = 1; + for (i = 1; i < devpriv->ai_n_chan; i++) + if (devpriv->ai_chanlist[0] != devpriv->ai_chanlist[i]) { + devpriv->ai_dma = 0; // we cann't use DMA :-( + break; + } + } else + devpriv->ai_dma = 0; + + devpriv->ai_flags = cmd->flags; + devpriv->ai_data_len = s->async->prealloc_bufsz; + devpriv->ai_data = s->async->prealloc_buf; + if (cmd->stop_src == TRIG_COUNT) { + devpriv->ai_scans = cmd->stop_arg; + devpriv->ai_neverending = 0; + } else { + devpriv->ai_scans = 0; + devpriv->ai_neverending = 1; + } + + devpriv->ai_act_scan = 0; + devpriv->ai_poll_ptr = 0; + s->async->cur_chan = 0; + + if ((devpriv->ai_flags & TRIG_WAKE_EOS)) { // don't we want wake up every scan? + devpriv->ai_eos = 1; + if (devpriv->ai_n_chan == 1) + devpriv->ai_dma = 0; // DMA is useless for this situation + } + + if (devpriv->ai_dma) { + if (devpriv->ai_eos) { // we use EOS, so adapt DMA buffer to one scan + devpriv->dmabytestomove[0] = + devpriv->ai_n_chan * sizeof(short); + devpriv->dmabytestomove[1] = + devpriv->ai_n_chan * sizeof(short); + devpriv->dma_runs_to_end = 1; + } else { + devpriv->dmabytestomove[0] = devpriv->hwdmasize[0]; + devpriv->dmabytestomove[1] = devpriv->hwdmasize[1]; + if (devpriv->ai_data_len < devpriv->hwdmasize[0]) + devpriv->dmabytestomove[0] = + devpriv->ai_data_len; + if (devpriv->ai_data_len < devpriv->hwdmasize[1]) + devpriv->dmabytestomove[1] = + devpriv->ai_data_len; + if (devpriv->ai_neverending) { + devpriv->dma_runs_to_end = 1; + } else { + bytes = devpriv->ai_n_chan * devpriv->ai_scans * sizeof(short); // how many samples we must transfer? + devpriv->dma_runs_to_end = bytes / devpriv->dmabytestomove[0]; // how many DMA pages we must fill + devpriv->last_dma_run = bytes % devpriv->dmabytestomove[0]; //on last dma transfer must be moved + if (devpriv->dma_runs_to_end == 0) + devpriv->dmabytestomove[0] = + devpriv->last_dma_run; + devpriv->dma_runs_to_end--; + } + } + if (devpriv->dmabytestomove[0] > devpriv->hwdmasize[0]) { + devpriv->dmabytestomove[0] = devpriv->hwdmasize[0]; + devpriv->ai_eos = 0; + } + if (devpriv->dmabytestomove[1] > devpriv->hwdmasize[1]) { + devpriv->dmabytestomove[1] = devpriv->hwdmasize[1]; + devpriv->ai_eos = 0; + } + devpriv->next_dma_buf = 0; + set_dma_mode(devpriv->dma, DMA_MODE_READ); + dma_flags = claim_dma_lock(); + clear_dma_ff(devpriv->dma); + set_dma_addr(devpriv->dma, devpriv->hwdmaptr[0]); + set_dma_count(devpriv->dma, devpriv->dmabytestomove[0]); + release_dma_lock(dma_flags); + enable_dma(devpriv->dma); +#ifdef PCL812_EXTDEBUG + rt_printk + ("pcl812 EDBG: DMA %d PTR 0x%0x/0x%0x LEN %u/%u EOS %d\n", + devpriv->dma, devpriv->hwdmaptr[0], + devpriv->hwdmaptr[1], devpriv->dmabytestomove[0], + devpriv->dmabytestomove[1], devpriv->ai_eos); +#endif + } + + switch (cmd->convert_src) { + case TRIG_TIMER: + start_pacer(dev, 1, divisor1, divisor2); + break; + } + + if (devpriv->ai_dma) { + outb(devpriv->mode_reg_int | 2, dev->iobase + PCL812_MODE); // let's go! + } else { + outb(devpriv->mode_reg_int | 6, dev->iobase + PCL812_MODE); // let's go! + } + +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: END: pcl812_ai_cmd(...)\n"); +#endif + + return 0; +} + +/* +============================================================================== +*/ +static irqreturn_t interrupt_pcl812_ai_int(int irq, void *d) +{ + char err = 1; + unsigned int mask, timeout; + struct comedi_device *dev = d; + struct comedi_subdevice *s = dev->subdevices + 0; + + s->async->events = 0; + + timeout = 50; /* wait max 50us, it must finish under 33us */ + if (devpriv->ai_is16b) { + mask = 0xffff; + while (timeout--) { + if (!(inb(dev->iobase + ACL8216_STATUS) & ACL8216_DRDY)) { + err = 0; + break; + } + comedi_udelay(1); + } + } else { + mask = 0x0fff; + while (timeout--) { + if (!(inb(dev->iobase + PCL812_AD_HI) & PCL812_DRDY)) { + err = 0; + break; + } + comedi_udelay(1); + } + } + + if (err) { + rt_printk + ("comedi%d: pcl812: (%s at 0x%lx) A/D cmd IRQ without DRDY!\n", + dev->minor, dev->board_name, dev->iobase); + pcl812_ai_cancel(dev, s); + s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR; + comedi_event(dev, s); + return IRQ_HANDLED; + } + + comedi_buf_put(s->async, + ((inb(dev->iobase + PCL812_AD_HI) << 8) | inb(dev->iobase + + PCL812_AD_LO)) & mask); + + outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */ + + if (s->async->cur_chan == 0) { /* one scan done */ + devpriv->ai_act_scan++; + if (!(devpriv->ai_neverending)) + if (devpriv->ai_act_scan >= devpriv->ai_scans) { /* all data sampled */ + pcl812_ai_cancel(dev, s); + s->async->events |= COMEDI_CB_EOA; + } + } + + comedi_event(dev, s); + return IRQ_HANDLED; +} + +/* +============================================================================== +*/ +static void transfer_from_dma_buf(struct comedi_device * dev, struct comedi_subdevice * s, + short * ptr, unsigned int bufptr, unsigned int len) +{ + unsigned int i; + + s->async->events = 0; + for (i = len; i; i--) { + comedi_buf_put(s->async, ptr[bufptr++]); // get one sample + + if (s->async->cur_chan == 0) { + devpriv->ai_act_scan++; + if (!devpriv->ai_neverending) + if (devpriv->ai_act_scan >= devpriv->ai_scans) { /* all data sampled */ + pcl812_ai_cancel(dev, s); + s->async->events |= COMEDI_CB_EOA; + break; + } + } + } + + comedi_event(dev, s); +} + +/* +============================================================================== +*/ +static irqreturn_t interrupt_pcl812_ai_dma(int irq, void *d) +{ + struct comedi_device *dev = d; + struct comedi_subdevice *s = dev->subdevices + 0; + unsigned long dma_flags; + int len, bufptr; + short *ptr; + +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: BGN: interrupt_pcl812_ai_dma(...)\n"); +#endif + ptr = (short *) devpriv->dmabuf[devpriv->next_dma_buf]; + len = (devpriv->dmabytestomove[devpriv->next_dma_buf] >> 1) - + devpriv->ai_poll_ptr; + + devpriv->next_dma_buf = 1 - devpriv->next_dma_buf; + disable_dma(devpriv->dma); + set_dma_mode(devpriv->dma, DMA_MODE_READ); + dma_flags = claim_dma_lock(); + set_dma_addr(devpriv->dma, devpriv->hwdmaptr[devpriv->next_dma_buf]); + if (devpriv->ai_eos) { + set_dma_count(devpriv->dma, + devpriv->dmabytestomove[devpriv->next_dma_buf]); + } else { + if (devpriv->dma_runs_to_end) { + set_dma_count(devpriv->dma, + devpriv->dmabytestomove[devpriv->next_dma_buf]); + } else { + set_dma_count(devpriv->dma, devpriv->last_dma_run); + } + devpriv->dma_runs_to_end--; + } + release_dma_lock(dma_flags); + enable_dma(devpriv->dma); + + outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */ + + bufptr = devpriv->ai_poll_ptr; + devpriv->ai_poll_ptr = 0; + + transfer_from_dma_buf(dev, s, ptr, bufptr, len); + +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: END: interrupt_pcl812_ai_dma(...)\n"); +#endif + return IRQ_HANDLED; +} + +/* +============================================================================== +*/ +static irqreturn_t interrupt_pcl812(int irq, void *d PT_REGS_ARG) +{ + struct comedi_device *dev = d; + + if (!dev->attached) { + comedi_error(dev, "spurious interrupt"); + return IRQ_HANDLED; + } + if (devpriv->ai_dma) { + return interrupt_pcl812_ai_dma(irq, d); + } else { + return interrupt_pcl812_ai_int(irq, d); + }; +} + +/* +============================================================================== +*/ +static int pcl812_ai_poll(struct comedi_device * dev, struct comedi_subdevice * s) +{ + unsigned long flags; + unsigned int top1, top2, i; + + if (!devpriv->ai_dma) + return 0; // poll is valid only for DMA transfer + + comedi_spin_lock_irqsave(&dev->spinlock, flags); + + for (i = 0; i < 10; i++) { + top1 = get_dma_residue(devpriv->ai_dma); // where is now DMA + top2 = get_dma_residue(devpriv->ai_dma); + if (top1 == top2) + break; + } + + if (top1 != top2) { + comedi_spin_unlock_irqrestore(&dev->spinlock, flags); + return 0; + } + + top1 = devpriv->dmabytestomove[1 - devpriv->next_dma_buf] - top1; // where is now DMA in buffer + top1 >>= 1; // sample position + top2 = top1 - devpriv->ai_poll_ptr; + if (top2 < 1) { // no new samples + comedi_spin_unlock_irqrestore(&dev->spinlock, flags); + return 0; + } + + transfer_from_dma_buf(dev, s, + (void *)devpriv->dmabuf[1 - devpriv->next_dma_buf], + devpriv->ai_poll_ptr, top2); + + devpriv->ai_poll_ptr = top1; // new buffer position + + comedi_spin_unlock_irqrestore(&dev->spinlock, flags); + + return s->async->buf_write_count - s->async->buf_read_count; +} + +/* +============================================================================== +*/ +static void setup_range_channel(struct comedi_device * dev, struct comedi_subdevice * s, + unsigned int rangechan, char wait) +{ + unsigned char chan_reg = CR_CHAN(rangechan); // normal board + unsigned char gain_reg = CR_RANGE(rangechan) + devpriv->range_correction; // gain index + + if ((chan_reg == devpriv->old_chan_reg) + && (gain_reg == devpriv->old_gain_reg)) + return; // we can return, no change + + devpriv->old_chan_reg = chan_reg; + devpriv->old_gain_reg = gain_reg; + + if (devpriv->use_MPC) { + if (devpriv->use_diff) { + chan_reg = chan_reg | 0x30; // DIFF inputs + } else { + if (chan_reg & 0x80) { + chan_reg = chan_reg | 0x20; // SE inputs 8-15 + } else { + chan_reg = chan_reg | 0x10; // SE inputs 0-7 + } + } + } + + outb(chan_reg, dev->iobase + PCL812_MUX); /* select channel */ + outb(gain_reg, dev->iobase + PCL812_GAIN); /* select gain */ + + if (wait) { + comedi_udelay(devpriv->max_812_ai_mode0_rangewait); // XXX this depends on selected range and can be very long for some high gain ranges! + } +} + +/* +============================================================================== +*/ +static void start_pacer(struct comedi_device * dev, int mode, unsigned int divisor1, + unsigned int divisor2) +{ +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: BGN: start_pacer(%d,%u,%u)\n", mode, divisor1, + divisor2); +#endif + outb(0xb4, dev->iobase + PCL812_CTRCTL); + outb(0x74, dev->iobase + PCL812_CTRCTL); + comedi_udelay(1); + + if (mode == 1) { + outb(divisor2 & 0xff, dev->iobase + PCL812_CTR2); + outb((divisor2 >> 8) & 0xff, dev->iobase + PCL812_CTR2); + outb(divisor1 & 0xff, dev->iobase + PCL812_CTR1); + outb((divisor1 >> 8) & 0xff, dev->iobase + PCL812_CTR1); + } +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: END: start_pacer(...)\n"); +#endif +} + +/* +============================================================================== +*/ +static void free_resources(struct comedi_device * dev) +{ + + if (dev->private) { + if (devpriv->dmabuf[0]) + free_pages(devpriv->dmabuf[0], devpriv->dmapages[0]); + if (devpriv->dmabuf[1]) + free_pages(devpriv->dmabuf[1], devpriv->dmapages[1]); + if (devpriv->dma) + free_dma(devpriv->dma); + } + if (dev->irq) + comedi_free_irq(dev->irq, dev); + if (dev->iobase) + release_region(dev->iobase, this_board->io_range); +} + +/* +============================================================================== +*/ +static int pcl812_ai_cancel(struct comedi_device * dev, struct comedi_subdevice * s) +{ +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: BGN: pcl812_ai_cancel(...)\n"); +#endif + if (devpriv->ai_dma) + disable_dma(devpriv->dma); + outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */ + outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE); /* Stop A/D */ + start_pacer(dev, -1, 0, 0); // stop 8254 + outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */ +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: END: pcl812_ai_cancel(...)\n"); +#endif + return 0; +} + +/* +============================================================================== +*/ +static void pcl812_reset(struct comedi_device * dev) +{ +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: BGN: pcl812_reset(...)\n"); +#endif + outb(0, dev->iobase + PCL812_MUX); + outb(0 + devpriv->range_correction, dev->iobase + PCL812_GAIN); + devpriv->old_chan_reg = -1; // invalidate chain/gain memory + devpriv->old_gain_reg = -1; + + switch (this_board->board_type) { + case boardPCL812PG: + case boardPCL812: + case boardACL8112: + case boardACL8216: + outb(0, dev->iobase + PCL812_DA2_LO); + outb(0, dev->iobase + PCL812_DA2_HI); + case boardA821: + outb(0, dev->iobase + PCL812_DA1_LO); + outb(0, dev->iobase + PCL812_DA1_HI); + start_pacer(dev, -1, 0, 0); // stop 8254 + outb(0, dev->iobase + PCL812_DO_HI); + outb(0, dev->iobase + PCL812_DO_LO); + outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE); + outb(0, dev->iobase + PCL812_CLRINT); + break; + case boardPCL813B: + case boardPCL813: + case boardISO813: + case boardACL8113: + comedi_udelay(5); + break; + } + comedi_udelay(5); +#ifdef PCL812_EXTDEBUG + rt_printk("pcl812 EDBG: END: pcl812_reset(...)\n"); +#endif +} + +/* +============================================================================== +*/ +static int pcl812_attach(struct comedi_device * dev, struct comedi_devconfig * it) +{ + int ret, subdev; + unsigned long iobase; + unsigned int irq; + unsigned int dma; + unsigned long pages; + struct comedi_subdevice *s; + int n_subdevices; + + iobase = it->options[0]; + printk("comedi%d: pcl812: board=%s, ioport=0x%03lx", dev->minor, + this_board->name, iobase); + + if (!request_region(iobase, this_board->io_range, "pcl812")) { + printk("I/O port conflict\n"); + return -EIO; + } + dev->iobase = iobase; + + if ((ret = alloc_private(dev, sizeof(struct pcl812_private))) < 0) { + free_resources(dev); + return ret; /* Can't alloc mem */ + } + + dev->board_name = this_board->name; + + irq = 0; + if (this_board->IRQbits != 0) { /* board support IRQ */ + irq = it->options[1]; + if (irq) { /* we want to use IRQ */ + if (((1 << irq) & this_board->IRQbits) == 0) { + printk(", IRQ %u is out of allowed range, DISABLING IT", irq); + irq = 0; /* Bad IRQ */ + } else { + if (comedi_request_irq(irq, interrupt_pcl812, 0, + "pcl812", dev)) { + printk(", unable to allocate IRQ %u, DISABLING IT", irq); + irq = 0; /* Can't use IRQ */ + } else { + printk(", irq=%u", irq); + } + } + } + } + + dev->irq = irq; + + dma = 0; + devpriv->dma = dma; + if (!dev->irq) + goto no_dma; /* if we haven't IRQ, we can't use DMA */ + if (this_board->DMAbits != 0) { /* board support DMA */ + dma = it->options[2]; + if (((1 << dma) & this_board->DMAbits) == 0) { + printk(", DMA is out of allowed range, FAIL!\n"); + return -EINVAL; /* Bad DMA */ + } + ret = request_dma(dma, "pcl812"); + if (ret) { + printk(", unable to allocate DMA %u, FAIL!\n", dma); + return -EBUSY; /* DMA isn't free */ + } + devpriv->dma = dma; + printk(", dma=%u", dma); + pages = 1; /* we want 8KB */ + devpriv->dmabuf[0] = __get_dma_pages(GFP_KERNEL, pages); + if (!devpriv->dmabuf[0]) { + printk(", unable to allocate DMA buffer, FAIL!\n"); + /* maybe experiment with try_to_free_pages() will help .... */ + free_resources(dev); + return -EBUSY; /* no buffer :-( */ + } + devpriv->dmapages[0] = pages; + devpriv->hwdmaptr[0] = virt_to_bus((void *)devpriv->dmabuf[0]); + devpriv->hwdmasize[0] = PAGE_SIZE * (1 << pages); + devpriv->dmabuf[1] = __get_dma_pages(GFP_KERNEL, pages); + if (!devpriv->dmabuf[1]) { + printk(", unable to allocate DMA buffer, FAIL!\n"); + free_resources(dev); + return -EBUSY; + } + devpriv->dmapages[1] = pages; + devpriv->hwdmaptr[1] = virt_to_bus((void *)devpriv->dmabuf[1]); + devpriv->hwdmasize[1] = PAGE_SIZE * (1 << pages); + } + no_dma: + + n_subdevices = 0; + if (this_board->n_aichan > 0) + n_subdevices++; + if (this_board->n_aochan > 0) + n_subdevices++; + if (this_board->n_dichan > 0) + n_subdevices++; + if (this_board->n_dochan > 0) + n_subdevices++; + + if ((ret = alloc_subdevices(dev, n_subdevices)) < 0) { + free_resources(dev); + return ret; + } + + subdev = 0; + + /* analog input */ + if (this_board->n_aichan > 0) { + s = dev->subdevices + subdev; + s->type = COMEDI_SUBD_AI; + s->subdev_flags = SDF_READABLE; + switch (this_board->board_type) { + case boardA821: + if (it->options[2] == 1) { + s->n_chan = this_board->n_aichan_diff; + s->subdev_flags |= SDF_DIFF; + devpriv->use_diff = 1; + } else { + s->n_chan = this_board->n_aichan; + s->subdev_flags |= SDF_GROUND; + } + break; + case boardACL8112: + case boardACL8216: + if (it->options[4] == 1) { + s->n_chan = this_board->n_aichan_diff; + s->subdev_flags |= SDF_DIFF; + devpriv->use_diff = 1; + } else { + s->n_chan = this_board->n_aichan; + s->subdev_flags |= SDF_GROUND; + } + break; + default: + s->n_chan = this_board->n_aichan; + s->subdev_flags |= SDF_GROUND; + break; + } + s->maxdata = this_board->ai_maxdata; + s->len_chanlist = MAX_CHANLIST_LEN; + s->range_table = this_board->rangelist_ai; + if (this_board->board_type == boardACL8216) { + s->insn_read = acl8216_ai_insn_read; + } else { + s->insn_read = pcl812_ai_insn_read; + } + devpriv->use_MPC = this_board->haveMPC508; + s->cancel = pcl812_ai_cancel; + if (dev->irq) { + dev->read_subdev = s; + s->subdev_flags |= SDF_CMD_READ; + s->do_cmdtest = pcl812_ai_cmdtest; + s->do_cmd = pcl812_ai_cmd; + s->poll = pcl812_ai_poll; + } + switch (this_board->board_type) { + case boardPCL812PG: + if (it->options[4] == 1) + s->range_table = &range_pcl812pg2_ai; + break; + case boardPCL812: + switch (it->options[4]) { + case 0: + s->range_table = &range_bipolar10; + break; + case 1: + s->range_table = &range_bipolar5; + break; + case 2: + s->range_table = &range_bipolar2_5; + break; + case 3: + s->range_table = &range812_bipolar1_25; + break; + case 4: + s->range_table = &range812_bipolar0_625; + break; + case 5: + s->range_table = &range812_bipolar0_3125; + break; + default: + s->range_table = &range_bipolar10; + break; + printk(", incorrect range number %d, changing to 0 (+/-10V)", it->options[4]); + break; + } + break; + break; + case boardPCL813B: + if (it->options[1] == 1) + s->range_table = &range_pcl813b2_ai; + break; + case boardISO813: + switch (it->options[1]) { + case 0: + s->range_table = &range_iso813_1_ai; + break; + case 1: + s->range_table = &range_iso813_1_2_ai; + break; + case 2: + s->range_table = &range_iso813_2_ai; + devpriv->range_correction = 1; + break; + case 3: + s->range_table = &range_iso813_2_2_ai; + devpriv->range_correction = 1; + break; + default: + s->range_table = &range_iso813_1_ai; + break; + printk(", incorrect range number %d, changing to 0 ", it->options[1]); + break; + } + break; + case boardACL8113: + switch (it->options[1]) { + case 0: + s->range_table = &range_acl8113_1_ai; + break; + case 1: + s->range_table = &range_acl8113_1_2_ai; + break; + case 2: + s->range_table = &range_acl8113_2_ai; + devpriv->range_correction = 1; + break; + case 3: + s->range_table = &range_acl8113_2_2_ai; + devpriv->range_correction = 1; + break; + default: + s->range_table = &range_acl8113_1_ai; + break; + printk(", incorrect range number %d, changing to 0 ", it->options[1]); + break; + } + break; + } + subdev++; + } + + /* analog output */ + if (this_board->n_aochan > 0) { + s = dev->subdevices + subdev; + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE | SDF_GROUND; + s->n_chan = this_board->n_aochan; + s->maxdata = 0xfff; + s->len_chanlist = 1; + s->range_table = this_board->rangelist_ao; + s->insn_read = pcl812_ao_insn_read; + s->insn_write = pcl812_ao_insn_write; + switch (this_board->board_type) { + case boardA821: + if (it->options[3] == 1) + s->range_table = &range_unipolar10; + break; + case boardPCL812: + case boardACL8112: + case boardPCL812PG: + case boardACL8216: + if (it->options[5] == 1) + s->range_table = &range_unipolar10; + if (it->options[5] == 2) + s->range_table = &range_unknown; + break; + } + subdev++; + } + + /* digital input */ + if (this_board->n_dichan > 0) { + s = dev->subdevices + subdev; + s->type = COMEDI_SUBD_DI; + s->subdev_flags = SDF_READABLE; + s->n_chan = this_board->n_dichan; + s->maxdata = 1; + s->len_chanlist = this_board->n_dichan; + s->range_table = &range_digital; + s->insn_bits = pcl812_di_insn_bits; + subdev++; + } + + /* digital output */ + if (this_board->n_dochan > 0) { + s = dev->subdevices + subdev; + s->type = COMEDI_SUBD_DO; + s->subdev_flags = SDF_WRITABLE; + s->n_chan = this_board->n_dochan; + s->maxdata = 1; + s->len_chanlist = this_board->n_dochan; + s->range_table = &range_digital; + s->insn_bits = pcl812_do_insn_bits; + subdev++; + } + + switch (this_board->board_type) { + case boardACL8216: + devpriv->ai_is16b = 1; + case boardPCL812PG: + case boardPCL812: + case boardACL8112: + devpriv->max_812_ai_mode0_rangewait = 1; + if (it->options[3] > 0) + devpriv->use_ext_trg = 1; // we use external trigger + case boardA821: + devpriv->max_812_ai_mode0_rangewait = 1; + devpriv->mode_reg_int = (irq << 4) & 0xf0; + break; + case boardPCL813B: + case boardPCL813: + case boardISO813: + case boardACL8113: + devpriv->max_812_ai_mode0_rangewait = 5; /* maybe there must by greatest timeout */ + break; + } + + printk("\n"); + devpriv->valid = 1; + + pcl812_reset(dev); + + return 0; +} + +/* +============================================================================== + */ +static int pcl812_detach(struct comedi_device * dev) +{ + +#ifdef PCL812_EXTDEBUG + rt_printk("comedi%d: pcl812: remove\n", dev->minor); +#endif + free_resources(dev); + return 0; +} |