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path: root/drivers/comedi/drivers/adl_pci7x3x.c
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Diffstat (limited to 'drivers/comedi/drivers/adl_pci7x3x.c')
-rw-r--r--drivers/comedi/drivers/adl_pci7x3x.c542
1 files changed, 542 insertions, 0 deletions
diff --git a/drivers/comedi/drivers/adl_pci7x3x.c b/drivers/comedi/drivers/adl_pci7x3x.c
new file mode 100644
index 000000000000..8fc45638ff59
--- /dev/null
+++ b/drivers/comedi/drivers/adl_pci7x3x.c
@@ -0,0 +1,542 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * COMEDI driver for the ADLINK PCI-723x/743x series boards.
+ * Copyright (C) 2012 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * Based on the adl_pci7230 driver written by:
+ * David Fernandez <dfcastelao@gmail.com>
+ * and the adl_pci7432 driver written by:
+ * Michel Lachaine <mike@mikelachaine.ca>
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+ */
+
+/*
+ * Driver: adl_pci7x3x
+ * Description: 32/64-Channel Isolated Digital I/O Boards
+ * Devices: [ADLink] PCI-7230 (adl_pci7230), PCI-7233 (adl_pci7233),
+ * PCI-7234 (adl_pci7234), PCI-7432 (adl_pci7432), PCI-7433 (adl_pci7433),
+ * PCI-7434 (adl_pci7434)
+ * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
+ * Updated: Fri, 20 Nov 2020 14:49:36 +0000
+ * Status: works (tested on PCI-7230)
+ *
+ * One or two subdevices are setup by this driver depending on
+ * the number of digital inputs and/or outputs provided by the
+ * board. Each subdevice has a maximum of 32 channels.
+ *
+ * PCI-7230 - 4 subdevices: 0 - 16 input, 1 - 16 output,
+ * 2 - IRQ_IDI0, 3 - IRQ_IDI1
+ * PCI-7233 - 1 subdevice: 0 - 32 input
+ * PCI-7234 - 1 subdevice: 0 - 32 output
+ * PCI-7432 - 2 subdevices: 0 - 32 input, 1 - 32 output
+ * PCI-7433 - 2 subdevices: 0 - 32 input, 1 - 32 input
+ * PCI-7434 - 2 subdevices: 0 - 32 output, 1 - 32 output
+ *
+ * The PCI-7230, PCI-7432 and PCI-7433 boards also support external
+ * interrupt signals on digital input channels 0 and 1. The PCI-7233
+ * has dual-interrupt sources for change-of-state (COS) on any 16
+ * digital input channels of LSB and for COS on any 16 digital input
+ * lines of MSB.
+ *
+ * Currently, this driver only supports interrupts for PCI-7230.
+ *
+ * Configuration Options: not applicable, uses comedi PCI auto config
+ */
+
+#include <linux/module.h>
+
+#include "../comedi_pci.h"
+
+#include "plx9052.h"
+
+/*
+ * Register I/O map (32-bit access only)
+ */
+#define PCI7X3X_DIO_REG 0x0000 /* in the DigIO Port area */
+#define PCI743X_DIO_REG 0x0004
+
+#define ADL_PT_CLRIRQ 0x0040 /* in the DigIO Port area */
+
+#define LINTI1_EN_ACT_IDI0 (PLX9052_INTCSR_LI1ENAB | PLX9052_INTCSR_LI1STAT)
+#define LINTI2_EN_ACT_IDI1 (PLX9052_INTCSR_LI2ENAB | PLX9052_INTCSR_LI2STAT)
+#define EN_PCI_LINT2H_LINT1H \
+ (PLX9052_INTCSR_PCIENAB | PLX9052_INTCSR_LI2POL | PLX9052_INTCSR_LI1POL)
+
+enum adl_pci7x3x_boardid {
+ BOARD_PCI7230,
+ BOARD_PCI7233,
+ BOARD_PCI7234,
+ BOARD_PCI7432,
+ BOARD_PCI7433,
+ BOARD_PCI7434,
+};
+
+struct adl_pci7x3x_boardinfo {
+ const char *name;
+ int nsubdevs;
+ int di_nchan;
+ int do_nchan;
+ int irq_nchan;
+};
+
+static const struct adl_pci7x3x_boardinfo adl_pci7x3x_boards[] = {
+ [BOARD_PCI7230] = {
+ .name = "adl_pci7230",
+ .nsubdevs = 4, /* IDI, IDO, IRQ_IDI0, IRQ_IDI1 */
+ .di_nchan = 16,
+ .do_nchan = 16,
+ .irq_nchan = 2,
+ },
+ [BOARD_PCI7233] = {
+ .name = "adl_pci7233",
+ .nsubdevs = 1,
+ .di_nchan = 32,
+ },
+ [BOARD_PCI7234] = {
+ .name = "adl_pci7234",
+ .nsubdevs = 1,
+ .do_nchan = 32,
+ },
+ [BOARD_PCI7432] = {
+ .name = "adl_pci7432",
+ .nsubdevs = 2,
+ .di_nchan = 32,
+ .do_nchan = 32,
+ },
+ [BOARD_PCI7433] = {
+ .name = "adl_pci7433",
+ .nsubdevs = 2,
+ .di_nchan = 64,
+ },
+ [BOARD_PCI7434] = {
+ .name = "adl_pci7434",
+ .nsubdevs = 2,
+ .do_nchan = 64,
+ }
+};
+
+struct adl_pci7x3x_dev_private_data {
+ unsigned long lcr_io_base;
+ unsigned int int_ctrl;
+};
+
+struct adl_pci7x3x_sd_private_data {
+ spinlock_t subd_slock; /* spin-lock for cmd_running */
+ unsigned long port_offset;
+ short int cmd_running;
+};
+
+static void process_irq(struct comedi_device *dev, unsigned int subdev,
+ unsigned short intcsr)
+{
+ struct comedi_subdevice *s = &dev->subdevices[subdev];
+ struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+ unsigned long reg = sd_priv->port_offset;
+ struct comedi_async *async_p = s->async;
+
+ if (async_p) {
+ unsigned short val = inw(dev->iobase + reg);
+
+ spin_lock(&sd_priv->subd_slock);
+ if (sd_priv->cmd_running)
+ comedi_buf_write_samples(s, &val, 1);
+ spin_unlock(&sd_priv->subd_slock);
+ comedi_handle_events(dev, s);
+ }
+}
+
+static irqreturn_t adl_pci7x3x_interrupt(int irq, void *p_device)
+{
+ struct comedi_device *dev = p_device;
+ struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+ unsigned long cpu_flags;
+ unsigned int intcsr;
+ bool li1stat, li2stat;
+
+ if (!dev->attached) {
+ /* Ignore interrupt before device fully attached. */
+ /* Might not even have allocated subdevices yet! */
+ return IRQ_NONE;
+ }
+
+ /* Check if we are source of interrupt */
+ spin_lock_irqsave(&dev->spinlock, cpu_flags);
+ intcsr = inl(dev_private->lcr_io_base + PLX9052_INTCSR);
+ li1stat = (intcsr & LINTI1_EN_ACT_IDI0) == LINTI1_EN_ACT_IDI0;
+ li2stat = (intcsr & LINTI2_EN_ACT_IDI1) == LINTI2_EN_ACT_IDI1;
+ if (li1stat || li2stat) {
+ /* clear all current interrupt flags */
+ /* Fixme: Reset all 2 Int Flags */
+ outb(0x00, dev->iobase + ADL_PT_CLRIRQ);
+ }
+ spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+ /* SubDev 2, 3 = Isolated DigIn , on "SCSI2" jack!*/
+
+ if (li1stat) /* 0x0005 LINTi1 is Enabled && IDI0 is 1 */
+ process_irq(dev, 2, intcsr);
+
+ if (li2stat) /* 0x0028 LINTi2 is Enabled && IDI1 is 1 */
+ process_irq(dev, 3, intcsr);
+
+ return IRQ_RETVAL(li1stat || li2stat);
+}
+
+static int adl_pci7x3x_asy_cmdtest(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_cmd *cmd)
+{
+ int err = 0;
+
+ /* Step 1 : check if triggers are trivially valid */
+
+ err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
+ err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
+ err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
+ err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+ err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_NONE);
+
+ if (err)
+ return 1;
+
+ /* Step 2a : make sure trigger sources are unique */
+ /* Step 2b : and mutually compatible */
+
+ /* Step 3: check if arguments are trivially valid */
+
+ err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
+ err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
+ err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
+ err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
+ cmd->chanlist_len);
+ err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
+
+ if (err)
+ return 3;
+
+ /* Step 4: fix up any arguments */
+
+ /* Step 5: check channel list if it exists */
+
+ return 0;
+}
+
+static int adl_pci7x3x_asy_cmd(struct comedi_device *dev,
+ struct comedi_subdevice *s)
+{
+ struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+ struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+ unsigned long cpu_flags;
+ unsigned int int_enab;
+
+ if (s->index == 2) {
+ /* enable LINTi1 == IDI sdi[0] Ch 0 IRQ ActHigh */
+ int_enab = PLX9052_INTCSR_LI1ENAB;
+ } else {
+ /* enable LINTi2 == IDI sdi[0] Ch 1 IRQ ActHigh */
+ int_enab = PLX9052_INTCSR_LI2ENAB;
+ }
+
+ spin_lock_irqsave(&dev->spinlock, cpu_flags);
+ dev_private->int_ctrl |= int_enab;
+ outl(dev_private->int_ctrl, dev_private->lcr_io_base + PLX9052_INTCSR);
+ spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+ spin_lock_irqsave(&sd_priv->subd_slock, cpu_flags);
+ sd_priv->cmd_running = 1;
+ spin_unlock_irqrestore(&sd_priv->subd_slock, cpu_flags);
+
+ return 0;
+}
+
+static int adl_pci7x3x_asy_cancel(struct comedi_device *dev,
+ struct comedi_subdevice *s)
+{
+ struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+ struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+ unsigned long cpu_flags;
+ unsigned int int_enab;
+
+ spin_lock_irqsave(&sd_priv->subd_slock, cpu_flags);
+ sd_priv->cmd_running = 0;
+ spin_unlock_irqrestore(&sd_priv->subd_slock, cpu_flags);
+ /* disable Interrupts */
+ if (s->index == 2)
+ int_enab = PLX9052_INTCSR_LI1ENAB;
+ else
+ int_enab = PLX9052_INTCSR_LI2ENAB;
+ spin_lock_irqsave(&dev->spinlock, cpu_flags);
+ dev_private->int_ctrl &= ~int_enab;
+ outl(dev_private->int_ctrl, dev_private->lcr_io_base + PLX9052_INTCSR);
+ spin_unlock_irqrestore(&dev->spinlock, cpu_flags);
+
+ return 0;
+}
+
+/* same as _di_insn_bits because the IRQ-pins are the DI-ports */
+static int adl_pci7x3x_dirq_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct adl_pci7x3x_sd_private_data *sd_priv = s->private;
+ unsigned long reg = (unsigned long)sd_priv->port_offset;
+
+ data[1] = inl(dev->iobase + reg);
+
+ return insn->n;
+}
+
+static int adl_pci7x3x_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned long reg = (unsigned long)s->private;
+
+ if (comedi_dio_update_state(s, data)) {
+ unsigned int val = s->state;
+
+ if (s->n_chan == 16) {
+ /*
+ * It seems the PCI-7230 needs the 16-bit DO state
+ * to be shifted left by 16 bits before being written
+ * to the 32-bit register. Set the value in both
+ * halves of the register to be sure.
+ */
+ val |= val << 16;
+ }
+ outl(val, dev->iobase + reg);
+ }
+
+ data[1] = s->state;
+
+ return insn->n;
+}
+
+static int adl_pci7x3x_di_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned long reg = (unsigned long)s->private;
+
+ data[1] = inl(dev->iobase + reg);
+
+ return insn->n;
+}
+
+static int adl_pci7x3x_reset(struct comedi_device *dev)
+{
+ struct adl_pci7x3x_dev_private_data *dev_private = dev->private;
+
+ /* disable Interrupts */
+ dev_private->int_ctrl = 0x00; /* Disable PCI + LINTi2 + LINTi1 */
+ outl(dev_private->int_ctrl, dev_private->lcr_io_base + PLX9052_INTCSR);
+
+ return 0;
+}
+
+static int adl_pci7x3x_auto_attach(struct comedi_device *dev,
+ unsigned long context)
+{
+ struct pci_dev *pcidev = comedi_to_pci_dev(dev);
+ const struct adl_pci7x3x_boardinfo *board = NULL;
+ struct comedi_subdevice *s;
+ struct adl_pci7x3x_dev_private_data *dev_private;
+ int subdev;
+ int nchan;
+ int ret;
+ int ic;
+
+ if (context < ARRAY_SIZE(adl_pci7x3x_boards))
+ board = &adl_pci7x3x_boards[context];
+ if (!board)
+ return -ENODEV;
+ dev->board_ptr = board;
+ dev->board_name = board->name;
+
+ dev_private = comedi_alloc_devpriv(dev, sizeof(*dev_private));
+ if (!dev_private)
+ return -ENOMEM;
+
+ ret = comedi_pci_enable(dev);
+ if (ret)
+ return ret;
+ dev->iobase = pci_resource_start(pcidev, 2);
+ dev_private->lcr_io_base = pci_resource_start(pcidev, 1);
+
+ adl_pci7x3x_reset(dev);
+
+ if (board->irq_nchan) {
+ /* discard all evtl. old IRQs */
+ outb(0x00, dev->iobase + ADL_PT_CLRIRQ);
+
+ if (pcidev->irq) {
+ ret = request_irq(pcidev->irq, adl_pci7x3x_interrupt,
+ IRQF_SHARED, dev->board_name, dev);
+ if (ret == 0) {
+ dev->irq = pcidev->irq;
+ /* 0x52 PCI + IDI Ch 1 Ch 0 IRQ Off ActHigh */
+ dev_private->int_ctrl = EN_PCI_LINT2H_LINT1H;
+ outl(dev_private->int_ctrl,
+ dev_private->lcr_io_base + PLX9052_INTCSR);
+ }
+ }
+ }
+
+ ret = comedi_alloc_subdevices(dev, board->nsubdevs);
+ if (ret)
+ return ret;
+
+ subdev = 0;
+
+ if (board->di_nchan) {
+ nchan = min(board->di_nchan, 32);
+
+ s = &dev->subdevices[subdev];
+ /* Isolated digital inputs 0 to 15/31 */
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = nchan;
+ s->maxdata = 1;
+ s->insn_bits = adl_pci7x3x_di_insn_bits;
+ s->range_table = &range_digital;
+
+ s->private = (void *)PCI7X3X_DIO_REG;
+
+ subdev++;
+
+ nchan = board->di_nchan - nchan;
+ if (nchan) {
+ s = &dev->subdevices[subdev];
+ /* Isolated digital inputs 32 to 63 */
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = nchan;
+ s->maxdata = 1;
+ s->insn_bits = adl_pci7x3x_di_insn_bits;
+ s->range_table = &range_digital;
+
+ s->private = (void *)PCI743X_DIO_REG;
+
+ subdev++;
+ }
+ }
+
+ if (board->do_nchan) {
+ nchan = min(board->do_nchan, 32);
+
+ s = &dev->subdevices[subdev];
+ /* Isolated digital outputs 0 to 15/31 */
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = nchan;
+ s->maxdata = 1;
+ s->insn_bits = adl_pci7x3x_do_insn_bits;
+ s->range_table = &range_digital;
+
+ s->private = (void *)PCI7X3X_DIO_REG;
+
+ subdev++;
+
+ nchan = board->do_nchan - nchan;
+ if (nchan) {
+ s = &dev->subdevices[subdev];
+ /* Isolated digital outputs 32 to 63 */
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = nchan;
+ s->maxdata = 1;
+ s->insn_bits = adl_pci7x3x_do_insn_bits;
+ s->range_table = &range_digital;
+
+ s->private = (void *)PCI743X_DIO_REG;
+
+ subdev++;
+ }
+ }
+
+ for (ic = 0; ic < board->irq_nchan; ++ic) {
+ struct adl_pci7x3x_sd_private_data *sd_priv;
+
+ nchan = 1;
+
+ s = &dev->subdevices[subdev];
+ /* Isolated digital inputs 0 or 1 */
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = nchan;
+ s->maxdata = 1;
+ s->insn_bits = adl_pci7x3x_dirq_insn_bits;
+ s->range_table = &range_digital;
+
+ sd_priv = comedi_alloc_spriv(s, sizeof(*sd_priv));
+ if (!sd_priv)
+ return -ENOMEM;
+
+ spin_lock_init(&sd_priv->subd_slock);
+ sd_priv->port_offset = PCI7X3X_DIO_REG;
+ sd_priv->cmd_running = 0;
+
+ if (dev->irq) {
+ dev->read_subdev = s;
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
+ s->len_chanlist = 1;
+ s->do_cmdtest = adl_pci7x3x_asy_cmdtest;
+ s->do_cmd = adl_pci7x3x_asy_cmd;
+ s->cancel = adl_pci7x3x_asy_cancel;
+ }
+
+ subdev++;
+ }
+
+ return 0;
+}
+
+static void adl_pci7x3x_detach(struct comedi_device *dev)
+{
+ if (dev->iobase)
+ adl_pci7x3x_reset(dev);
+ comedi_pci_detach(dev);
+}
+
+static struct comedi_driver adl_pci7x3x_driver = {
+ .driver_name = "adl_pci7x3x",
+ .module = THIS_MODULE,
+ .auto_attach = adl_pci7x3x_auto_attach,
+ .detach = adl_pci7x3x_detach,
+};
+
+static int adl_pci7x3x_pci_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
+{
+ return comedi_pci_auto_config(dev, &adl_pci7x3x_driver,
+ id->driver_data);
+}
+
+static const struct pci_device_id adl_pci7x3x_pci_table[] = {
+ { PCI_VDEVICE(ADLINK, 0x7230), BOARD_PCI7230 },
+ { PCI_VDEVICE(ADLINK, 0x7233), BOARD_PCI7233 },
+ { PCI_VDEVICE(ADLINK, 0x7234), BOARD_PCI7234 },
+ { PCI_VDEVICE(ADLINK, 0x7432), BOARD_PCI7432 },
+ { PCI_VDEVICE(ADLINK, 0x7433), BOARD_PCI7433 },
+ { PCI_VDEVICE(ADLINK, 0x7434), BOARD_PCI7434 },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, adl_pci7x3x_pci_table);
+
+static struct pci_driver adl_pci7x3x_pci_driver = {
+ .name = "adl_pci7x3x",
+ .id_table = adl_pci7x3x_pci_table,
+ .probe = adl_pci7x3x_pci_probe,
+ .remove = comedi_pci_auto_unconfig,
+};
+module_comedi_pci_driver(adl_pci7x3x_driver, adl_pci7x3x_pci_driver);
+
+MODULE_DESCRIPTION("ADLINK PCI-723x/743x Isolated Digital I/O boards");
+MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
+MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2024-06-14 22:34:07 +0000