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path: root/drivers/staging/comedi/drivers/me4000.c
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-rw-r--r--drivers/staging/comedi/drivers/me4000.c2362
1 files changed, 2362 insertions, 0 deletions
diff --git a/drivers/staging/comedi/drivers/me4000.c b/drivers/staging/comedi/drivers/me4000.c
new file mode 100644
index 000000000000..b432aa7d7644
--- /dev/null
+++ b/drivers/staging/comedi/drivers/me4000.c
@@ -0,0 +1,2362 @@
+/*
+ comedi/drivers/me4000.c
+ Source code for the Meilhaus ME-4000 board family.
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 2000 David A. Schleef <ds@schleef.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ */
+/*
+Driver: me4000
+Description: Meilhaus ME-4000 series boards
+Devices: [Meilhaus] ME-4650 (me4000), ME-4670i, ME-4680, ME-4680i, ME-4680is
+Author: gg (Guenter Gebhardt <g.gebhardt@meilhaus.com>)
+Updated: Mon, 18 Mar 2002 15:34:01 -0800
+Status: broken (no support for loading firmware)
+
+Supports:
+
+ - Analog Input
+ - Analog Output
+ - Digital I/O
+ - Counter
+
+Configuration Options:
+
+ [0] - PCI bus number (optional)
+ [1] - PCI slot number (optional)
+
+ If bus/slot is not specified, the first available PCI
+ device will be used.
+
+The firmware required by these boards is available in the
+comedi_nonfree_firmware tarball available from
+http://www.comedi.org. However, the driver's support for
+loading the firmware through comedi_config is currently
+broken.
+
+ */
+
+#include "../comedidev.h"
+
+#include <linux/delay.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+
+#include "comedi_pci.h"
+#include "me4000.h"
+#if 0
+/* file removed due to GPL incompatibility */
+#include "me4000_fw.h"
+#endif
+
+/*=============================================================================
+ PCI device table.
+ This is used by modprobe to translate PCI IDs to drivers.
+ ===========================================================================*/
+
+static DEFINE_PCI_DEVICE_TABLE(me4000_pci_table) = {
+ {PCI_VENDOR_ID_MEILHAUS, 0x4650, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+
+ {PCI_VENDOR_ID_MEILHAUS, 0x4660, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4661, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4662, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4663, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+
+ {PCI_VENDOR_ID_MEILHAUS, 0x4670, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4671, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4672, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4673, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+
+ {PCI_VENDOR_ID_MEILHAUS, 0x4680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4681, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4682, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {PCI_VENDOR_ID_MEILHAUS, 0x4683, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+
+ {0}
+};
+
+MODULE_DEVICE_TABLE(pci, me4000_pci_table);
+
+static const me4000_board_t me4000_boards[] = {
+ {"ME-4650", 0x4650, {0, 0}, {16, 0, 0, 0}, {4}, {0}},
+
+ {"ME-4660", 0x4660, {0, 0}, {32, 0, 16, 0}, {4}, {3}},
+ {"ME-4660i", 0x4661, {0, 0}, {32, 0, 16, 0}, {4}, {3}},
+ {"ME-4660s", 0x4662, {0, 0}, {32, 8, 16, 0}, {4}, {3}},
+ {"ME-4660is", 0x4663, {0, 0}, {32, 8, 16, 0}, {4}, {3}},
+
+ {"ME-4670", 0x4670, {4, 0}, {32, 0, 16, 1}, {4}, {3}},
+ {"ME-4670i", 0x4671, {4, 0}, {32, 0, 16, 1}, {4}, {3}},
+ {"ME-4670s", 0x4672, {4, 0}, {32, 8, 16, 1}, {4}, {3}},
+ {"ME-4670is", 0x4673, {4, 0}, {32, 8, 16, 1}, {4}, {3}},
+
+ {"ME-4680", 0x4680, {4, 4}, {32, 0, 16, 1}, {4}, {3}},
+ {"ME-4680i", 0x4681, {4, 4}, {32, 0, 16, 1}, {4}, {3}},
+ {"ME-4680s", 0x4682, {4, 4}, {32, 8, 16, 1}, {4}, {3}},
+ {"ME-4680is", 0x4683, {4, 4}, {32, 8, 16, 1}, {4}, {3}},
+
+ {0},
+};
+
+#define ME4000_BOARD_VERSIONS (sizeof(me4000_boards) / sizeof(me4000_board_t) - 1)
+
+/*-----------------------------------------------------------------------------
+ Comedi function prototypes
+ ---------------------------------------------------------------------------*/
+static int me4000_attach(comedi_device * dev, comedi_devconfig * it);
+static int me4000_detach(comedi_device * dev);
+static comedi_driver driver_me4000 = {
+ driver_name:"me4000",
+ module:THIS_MODULE,
+ attach:me4000_attach,
+ detach:me4000_detach,
+};
+
+/*-----------------------------------------------------------------------------
+ Meilhaus function prototypes
+ ---------------------------------------------------------------------------*/
+static int me4000_probe(comedi_device * dev, comedi_devconfig * it);
+static int get_registers(comedi_device * dev, struct pci_dev *pci_dev_p);
+static int init_board_info(comedi_device * dev, struct pci_dev *pci_dev_p);
+static int init_ao_context(comedi_device * dev);
+static int init_ai_context(comedi_device * dev);
+static int init_dio_context(comedi_device * dev);
+static int init_cnt_context(comedi_device * dev);
+static int xilinx_download(comedi_device * dev);
+static int reset_board(comedi_device * dev);
+
+static int me4000_dio_insn_bits(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data);
+
+static int me4000_dio_insn_config(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data);
+
+static int cnt_reset(comedi_device * dev, unsigned int channel);
+
+static int cnt_config(comedi_device * dev,
+ unsigned int channel, unsigned int mode);
+
+static int me4000_cnt_insn_config(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data);
+
+static int me4000_cnt_insn_write(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data);
+
+static int me4000_cnt_insn_read(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data);
+
+static int me4000_ai_insn_read(comedi_device * dev,
+ comedi_subdevice * subdevice, comedi_insn * insn, lsampl_t * data);
+
+static int me4000_ai_cancel(comedi_device * dev, comedi_subdevice * s);
+
+static int ai_check_chanlist(comedi_device * dev,
+ comedi_subdevice * s, comedi_cmd * cmd);
+
+static int ai_round_cmd_args(comedi_device * dev,
+ comedi_subdevice * s,
+ comedi_cmd * cmd,
+ unsigned int *init_ticks,
+ unsigned int *scan_ticks, unsigned int *chan_ticks);
+
+static int ai_prepare(comedi_device * dev,
+ comedi_subdevice * s,
+ comedi_cmd * cmd,
+ unsigned int init_ticks,
+ unsigned int scan_ticks, unsigned int chan_ticks);
+
+static int ai_write_chanlist(comedi_device * dev,
+ comedi_subdevice * s, comedi_cmd * cmd);
+
+static irqreturn_t me4000_ai_isr(int irq, void *dev_id PT_REGS_ARG);
+
+static int me4000_ai_do_cmd_test(comedi_device * dev,
+ comedi_subdevice * s, comedi_cmd * cmd);
+
+static int me4000_ai_do_cmd(comedi_device * dev, comedi_subdevice * s);
+
+static int me4000_ao_insn_write(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data);
+
+static int me4000_ao_insn_read(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data);
+
+/*-----------------------------------------------------------------------------
+ Meilhaus inline functions
+ ---------------------------------------------------------------------------*/
+
+static inline void me4000_outb(comedi_device * dev, unsigned char value,
+ unsigned long port)
+{
+ PORT_PDEBUG("--> 0x%02X port 0x%04lX\n", value, port);
+ outb(value, port);
+}
+
+static inline void me4000_outl(comedi_device * dev, unsigned long value,
+ unsigned long port)
+{
+ PORT_PDEBUG("--> 0x%08lX port 0x%04lX\n", value, port);
+ outl(value, port);
+}
+
+static inline unsigned long me4000_inl(comedi_device * dev, unsigned long port)
+{
+ unsigned long value;
+ value = inl(port);
+ PORT_PDEBUG("<-- 0x%08lX port 0x%04lX\n", value, port);
+ return value;
+}
+
+static inline unsigned char me4000_inb(comedi_device * dev, unsigned long port)
+{
+ unsigned char value;
+ value = inb(port);
+ PORT_PDEBUG("<-- 0x%08X port 0x%04lX\n", value, port);
+ return value;
+}
+
+static const comedi_lrange me4000_ai_range = {
+ 4,
+ {
+ UNI_RANGE(2.5),
+ UNI_RANGE(10),
+ BIP_RANGE(2.5),
+ BIP_RANGE(10),
+ }
+};
+
+static const comedi_lrange me4000_ao_range = {
+ 1,
+ {
+ BIP_RANGE(10),
+ }
+};
+
+static int me4000_attach(comedi_device * dev, comedi_devconfig * it)
+{
+ comedi_subdevice *s;
+ int result;
+
+ CALL_PDEBUG("In me4000_attach()\n");
+
+ result = me4000_probe(dev, it);
+ if (result)
+ return result;
+
+ /*
+ * Allocate the subdevice structures. alloc_subdevice() is a
+ * convenient macro defined in comedidev.h. It relies on
+ * n_subdevices being set correctly.
+ */
+ if (alloc_subdevices(dev, 4) < 0)
+ return -ENOMEM;
+
+ /*=========================================================================
+ Analog input subdevice
+ ========================================================================*/
+
+ s = dev->subdevices + 0;
+
+ if (thisboard->ai.count) {
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags =
+ SDF_READABLE | SDF_COMMON | SDF_GROUND | SDF_DIFF;
+ s->n_chan = thisboard->ai.count;
+ s->maxdata = 0xFFFF; // 16 bit ADC
+ s->len_chanlist = ME4000_AI_CHANNEL_LIST_COUNT;
+ s->range_table = &me4000_ai_range;
+ s->insn_read = me4000_ai_insn_read;
+
+ if (info->irq > 0) {
+ if (comedi_request_irq(info->irq, me4000_ai_isr,
+ IRQF_SHARED, "ME-4000", dev)) {
+ printk("comedi%d: me4000: me4000_attach(): Unable to allocate irq\n", dev->minor);
+ } else {
+ dev->read_subdev = s;
+ s->subdev_flags |= SDF_CMD_READ;
+ s->cancel = me4000_ai_cancel;
+ s->do_cmdtest = me4000_ai_do_cmd_test;
+ s->do_cmd = me4000_ai_do_cmd;
+ }
+ } else {
+ printk(KERN_WARNING
+ "comedi%d: me4000: me4000_attach(): No interrupt available\n",
+ dev->minor);
+ }
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ /*=========================================================================
+ Analog output subdevice
+ ========================================================================*/
+
+ s = dev->subdevices + 1;
+
+ if (thisboard->ao.count) {
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITEABLE | SDF_COMMON | SDF_GROUND;
+ s->n_chan = thisboard->ao.count;
+ s->maxdata = 0xFFFF; // 16 bit DAC
+ s->range_table = &me4000_ao_range;
+ s->insn_write = me4000_ao_insn_write;
+ s->insn_read = me4000_ao_insn_read;
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ /*=========================================================================
+ Digital I/O subdevice
+ ========================================================================*/
+
+ s = dev->subdevices + 2;
+
+ if (thisboard->dio.count) {
+ s->type = COMEDI_SUBD_DIO;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+ s->n_chan = thisboard->dio.count * 8;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = me4000_dio_insn_bits;
+ s->insn_config = me4000_dio_insn_config;
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ /*
+ * Check for optoisolated ME-4000 version. If one the first
+ * port is a fixed output port and the second is a fixed input port.
+ */
+ if (!me4000_inl(dev, info->dio_context.dir_reg)) {
+ s->io_bits |= 0xFF;
+ me4000_outl(dev, ME4000_DIO_CTRL_BIT_MODE_0,
+ info->dio_context.dir_reg);
+ }
+
+ /*=========================================================================
+ Counter subdevice
+ ========================================================================*/
+
+ s = dev->subdevices + 3;
+
+ if (thisboard->cnt.count) {
+ s->type = COMEDI_SUBD_COUNTER;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+ s->n_chan = thisboard->cnt.count;
+ s->maxdata = 0xFFFF; // 16 bit counters
+ s->insn_read = me4000_cnt_insn_read;
+ s->insn_write = me4000_cnt_insn_write;
+ s->insn_config = me4000_cnt_insn_config;
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ return 0;
+}
+
+static int me4000_probe(comedi_device * dev, comedi_devconfig * it)
+{
+ struct pci_dev *pci_device;
+ int result, i;
+ me4000_board_t *board;
+
+ CALL_PDEBUG("In me4000_probe()\n");
+
+ /* Allocate private memory */
+ if (alloc_private(dev, sizeof(me4000_info_t)) < 0) {
+ return -ENOMEM;
+ }
+ /*
+ * Probe the device to determine what device in the series it is.
+ */
+ for (pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
+ pci_device != NULL;
+ pci_device =
+ pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_device)) {
+ if (pci_device->vendor == PCI_VENDOR_ID_MEILHAUS) {
+ for (i = 0; i < ME4000_BOARD_VERSIONS; i++) {
+ if (me4000_boards[i].device_id ==
+ pci_device->device) {
+ /* Was a particular bus/slot requested? */
+ if ((it->options[0] != 0)
+ || (it->options[1] != 0)) {
+ /* Are we on the wrong bus/slot? */
+ if (pci_device->bus->number !=
+ it->options[0]
+ || PCI_SLOT(pci_device->
+ devfn) !=
+ it->options[1]) {
+ continue;
+ }
+ }
+ dev->board_ptr = me4000_boards + i;
+ board = (me4000_board_t *) dev->
+ board_ptr;
+ info->pci_dev_p = pci_device;
+ goto found;
+ }
+ }
+ }
+ }
+
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): No supported board found (req. bus/slot : %d/%d)\n",
+ dev->minor, it->options[0], it->options[1]);
+ return -ENODEV;
+
+ found:
+
+ printk(KERN_INFO
+ "comedi%d: me4000: me4000_probe(): Found %s at PCI bus %d, slot %d\n",
+ dev->minor, me4000_boards[i].name, pci_device->bus->number,
+ PCI_SLOT(pci_device->devfn));
+
+ /* Set data in device structure */
+ dev->board_name = board->name;
+
+ /* Enable PCI device and request regions */
+ result = comedi_pci_enable(pci_device, dev->board_name);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Cannot enable PCI device and request I/O regions\n",
+ dev->minor);
+ return result;
+ }
+
+ /* Get the PCI base registers */
+ result = get_registers(dev, pci_device);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Cannot get registers\n",
+ dev->minor);
+ return result;
+ }
+ /* Initialize board info */
+ result = init_board_info(dev, pci_device);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Cannot init baord info\n",
+ dev->minor);
+ return result;
+ }
+
+ /* Init analog output context */
+ result = init_ao_context(dev);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Cannot init ao context\n",
+ dev->minor);
+ return result;
+ }
+
+ /* Init analog input context */
+ result = init_ai_context(dev);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Cannot init ai context\n",
+ dev->minor);
+ return result;
+ }
+
+ /* Init digital I/O context */
+ result = init_dio_context(dev);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Cannot init dio context\n",
+ dev->minor);
+ return result;
+ }
+
+ /* Init counter context */
+ result = init_cnt_context(dev);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Cannot init cnt context\n",
+ dev->minor);
+ return result;
+ }
+
+ /* Download the xilinx firmware */
+ result = xilinx_download(dev);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Can't download firmware\n",
+ dev->minor);
+ return result;
+ }
+
+ /* Make a hardware reset */
+ result = reset_board(dev);
+ if (result) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_probe(): Can't reset board\n",
+ dev->minor);
+ return result;
+ }
+
+ return 0;
+}
+
+static int get_registers(comedi_device * dev, struct pci_dev *pci_dev_p)
+{
+
+ CALL_PDEBUG("In get_registers()\n");
+
+ /*--------------------------- plx regbase ---------------------------------*/
+
+ info->plx_regbase = pci_resource_start(pci_dev_p, 1);
+ if (info->plx_regbase == 0) {
+ printk(KERN_ERR
+ "comedi%d: me4000: get_registers(): PCI base address 1 is not available\n",
+ dev->minor);
+ return -ENODEV;
+ }
+ info->plx_regbase_size = pci_resource_len(pci_dev_p, 1);
+
+ /*--------------------------- me4000 regbase ------------------------------*/
+
+ info->me4000_regbase = pci_resource_start(pci_dev_p, 2);
+ if (info->me4000_regbase == 0) {
+ printk(KERN_ERR
+ "comedi%d: me4000: get_registers(): PCI base address 2 is not available\n",
+ dev->minor);
+ return -ENODEV;
+ }
+ info->me4000_regbase_size = pci_resource_len(pci_dev_p, 2);
+
+ /*--------------------------- timer regbase ------------------------------*/
+
+ info->timer_regbase = pci_resource_start(pci_dev_p, 3);
+ if (info->timer_regbase == 0) {
+ printk(KERN_ERR
+ "comedi%d: me4000: get_registers(): PCI base address 3 is not available\n",
+ dev->minor);
+ return -ENODEV;
+ }
+ info->timer_regbase_size = pci_resource_len(pci_dev_p, 3);
+
+ /*--------------------------- program regbase ------------------------------*/
+
+ info->program_regbase = pci_resource_start(pci_dev_p, 5);
+ if (info->program_regbase == 0) {
+ printk(KERN_ERR
+ "comedi%d: me4000: get_registers(): PCI base address 5 is not available\n",
+ dev->minor);
+ return -ENODEV;
+ }
+ info->program_regbase_size = pci_resource_len(pci_dev_p, 5);
+
+ return 0;
+}
+
+static int init_board_info(comedi_device * dev, struct pci_dev *pci_dev_p)
+{
+ int result;
+
+ CALL_PDEBUG("In init_board_info()\n");
+
+ /* Init spin locks */
+ //spin_lock_init(&info->preload_lock);
+ //spin_lock_init(&info->ai_ctrl_lock);
+
+ /* Get the serial number */
+ result = pci_read_config_dword(pci_dev_p, 0x2C, &info->serial_no);
+ if (result != PCIBIOS_SUCCESSFUL) {
+ return result;
+ }
+
+ /* Get the hardware revision */
+ result = pci_read_config_byte(pci_dev_p, 0x08, &info->hw_revision);
+ if (result != PCIBIOS_SUCCESSFUL) {
+ return result;
+ }
+
+ /* Get the vendor id */
+ info->vendor_id = pci_dev_p->vendor;
+
+ /* Get the device id */
+ info->device_id = pci_dev_p->device;
+
+ /* Get the irq assigned to the board */
+ info->irq = pci_dev_p->irq;
+
+ return 0;
+}
+
+static int init_ao_context(comedi_device * dev)
+{
+ int i;
+
+ CALL_PDEBUG("In init_ao_context()\n");
+
+ for (i = 0; i < thisboard->ao.count; i++) {
+ //spin_lock_init(&info->ao_context[i].use_lock);
+ info->ao_context[i].irq = info->irq;
+
+ switch (i) {
+ case 0:
+ info->ao_context[i].ctrl_reg =
+ info->me4000_regbase + ME4000_AO_00_CTRL_REG;
+ info->ao_context[i].status_reg =
+ info->me4000_regbase + ME4000_AO_00_STATUS_REG;
+ info->ao_context[i].fifo_reg =
+ info->me4000_regbase + ME4000_AO_00_FIFO_REG;
+ info->ao_context[i].single_reg =
+ info->me4000_regbase + ME4000_AO_00_SINGLE_REG;
+ info->ao_context[i].timer_reg =
+ info->me4000_regbase + ME4000_AO_00_TIMER_REG;
+ info->ao_context[i].irq_status_reg =
+ info->me4000_regbase + ME4000_IRQ_STATUS_REG;
+ info->ao_context[i].preload_reg =
+ info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
+ break;
+ case 1:
+ info->ao_context[i].ctrl_reg =
+ info->me4000_regbase + ME4000_AO_01_CTRL_REG;
+ info->ao_context[i].status_reg =
+ info->me4000_regbase + ME4000_AO_01_STATUS_REG;
+ info->ao_context[i].fifo_reg =
+ info->me4000_regbase + ME4000_AO_01_FIFO_REG;
+ info->ao_context[i].single_reg =
+ info->me4000_regbase + ME4000_AO_01_SINGLE_REG;
+ info->ao_context[i].timer_reg =
+ info->me4000_regbase + ME4000_AO_01_TIMER_REG;
+ info->ao_context[i].irq_status_reg =
+ info->me4000_regbase + ME4000_IRQ_STATUS_REG;
+ info->ao_context[i].preload_reg =
+ info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
+ break;
+ case 2:
+ info->ao_context[i].ctrl_reg =
+ info->me4000_regbase + ME4000_AO_02_CTRL_REG;
+ info->ao_context[i].status_reg =
+ info->me4000_regbase + ME4000_AO_02_STATUS_REG;
+ info->ao_context[i].fifo_reg =
+ info->me4000_regbase + ME4000_AO_02_FIFO_REG;
+ info->ao_context[i].single_reg =
+ info->me4000_regbase + ME4000_AO_02_SINGLE_REG;
+ info->ao_context[i].timer_reg =
+ info->me4000_regbase + ME4000_AO_02_TIMER_REG;
+ info->ao_context[i].irq_status_reg =
+ info->me4000_regbase + ME4000_IRQ_STATUS_REG;
+ info->ao_context[i].preload_reg =
+ info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
+ break;
+ case 3:
+ info->ao_context[i].ctrl_reg =
+ info->me4000_regbase + ME4000_AO_03_CTRL_REG;
+ info->ao_context[i].status_reg =
+ info->me4000_regbase + ME4000_AO_03_STATUS_REG;
+ info->ao_context[i].fifo_reg =
+ info->me4000_regbase + ME4000_AO_03_FIFO_REG;
+ info->ao_context[i].single_reg =
+ info->me4000_regbase + ME4000_AO_03_SINGLE_REG;
+ info->ao_context[i].timer_reg =
+ info->me4000_regbase + ME4000_AO_03_TIMER_REG;
+ info->ao_context[i].irq_status_reg =
+ info->me4000_regbase + ME4000_IRQ_STATUS_REG;
+ info->ao_context[i].preload_reg =
+ info->me4000_regbase + ME4000_AO_LOADSETREG_XX;
+ break;
+ default:
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int init_ai_context(comedi_device * dev)
+{
+
+ CALL_PDEBUG("In init_ai_context()\n");
+
+ info->ai_context.irq = info->irq;
+
+ info->ai_context.ctrl_reg = info->me4000_regbase + ME4000_AI_CTRL_REG;
+ info->ai_context.status_reg =
+ info->me4000_regbase + ME4000_AI_STATUS_REG;
+ info->ai_context.channel_list_reg =
+ info->me4000_regbase + ME4000_AI_CHANNEL_LIST_REG;
+ info->ai_context.data_reg = info->me4000_regbase + ME4000_AI_DATA_REG;
+ info->ai_context.chan_timer_reg =
+ info->me4000_regbase + ME4000_AI_CHAN_TIMER_REG;
+ info->ai_context.chan_pre_timer_reg =
+ info->me4000_regbase + ME4000_AI_CHAN_PRE_TIMER_REG;
+ info->ai_context.scan_timer_low_reg =
+ info->me4000_regbase + ME4000_AI_SCAN_TIMER_LOW_REG;
+ info->ai_context.scan_timer_high_reg =
+ info->me4000_regbase + ME4000_AI_SCAN_TIMER_HIGH_REG;
+ info->ai_context.scan_pre_timer_low_reg =
+ info->me4000_regbase + ME4000_AI_SCAN_PRE_TIMER_LOW_REG;
+ info->ai_context.scan_pre_timer_high_reg =
+ info->me4000_regbase + ME4000_AI_SCAN_PRE_TIMER_HIGH_REG;
+ info->ai_context.start_reg = info->me4000_regbase + ME4000_AI_START_REG;
+ info->ai_context.irq_status_reg =
+ info->me4000_regbase + ME4000_IRQ_STATUS_REG;
+ info->ai_context.sample_counter_reg =
+ info->me4000_regbase + ME4000_AI_SAMPLE_COUNTER_REG;
+
+ return 0;
+}
+
+static int init_dio_context(comedi_device * dev)
+{
+
+ CALL_PDEBUG("In init_dio_context()\n");
+
+ info->dio_context.dir_reg = info->me4000_regbase + ME4000_DIO_DIR_REG;
+ info->dio_context.ctrl_reg = info->me4000_regbase + ME4000_DIO_CTRL_REG;
+ info->dio_context.port_0_reg =
+ info->me4000_regbase + ME4000_DIO_PORT_0_REG;
+ info->dio_context.port_1_reg =
+ info->me4000_regbase + ME4000_DIO_PORT_1_REG;
+ info->dio_context.port_2_reg =
+ info->me4000_regbase + ME4000_DIO_PORT_2_REG;
+ info->dio_context.port_3_reg =
+ info->me4000_regbase + ME4000_DIO_PORT_3_REG;
+
+ return 0;
+}
+
+static int init_cnt_context(comedi_device * dev)
+{
+
+ CALL_PDEBUG("In init_cnt_context()\n");
+
+ info->cnt_context.ctrl_reg = info->timer_regbase + ME4000_CNT_CTRL_REG;
+ info->cnt_context.counter_0_reg =
+ info->timer_regbase + ME4000_CNT_COUNTER_0_REG;
+ info->cnt_context.counter_1_reg =
+ info->timer_regbase + ME4000_CNT_COUNTER_1_REG;
+ info->cnt_context.counter_2_reg =
+ info->timer_regbase + ME4000_CNT_COUNTER_2_REG;
+
+ return 0;
+}
+
+#define FIRMWARE_NOT_AVAILABLE 1
+#if FIRMWARE_NOT_AVAILABLE
+extern unsigned char *xilinx_firm;
+#endif
+
+static int xilinx_download(comedi_device * dev)
+{
+ u32 value = 0;
+ wait_queue_head_t queue;
+ int idx = 0;
+ int size = 0;
+
+ CALL_PDEBUG("In xilinx_download()\n");
+
+ init_waitqueue_head(&queue);
+
+ /*
+ * Set PLX local interrupt 2 polarity to high.
+ * Interrupt is thrown by init pin of xilinx.
+ */
+ outl(0x10, info->plx_regbase + PLX_INTCSR);
+
+ /* Set /CS and /WRITE of the Xilinx */
+ value = inl(info->plx_regbase + PLX_ICR);
+ value |= 0x100;
+ outl(value, info->plx_regbase + PLX_ICR);
+
+ /* Init Xilinx with CS1 */
+ inb(info->program_regbase + 0xC8);
+
+ /* Wait until /INIT pin is set */
+ udelay(20);
+ if (!inl(info->plx_regbase + PLX_INTCSR) & 0x20) {
+ printk(KERN_ERR
+ "comedi%d: me4000: xilinx_download(): Can't init Xilinx\n",
+ dev->minor);
+ return -EIO;
+ }
+
+ /* Reset /CS and /WRITE of the Xilinx */
+ value = inl(info->plx_regbase + PLX_ICR);
+ value &= ~0x100;
+ outl(value, info->plx_regbase + PLX_ICR);
+ if (FIRMWARE_NOT_AVAILABLE) {
+ comedi_error(dev,
+ "xilinx firmware unavailable due to licensing, aborting");
+ return -EIO;
+ } else {
+ /* Download Xilinx firmware */
+ size = (xilinx_firm[0] << 24) + (xilinx_firm[1] << 16) +
+ (xilinx_firm[2] << 8) + xilinx_firm[3];
+ udelay(10);
+
+ for (idx = 0; idx < size; idx++) {
+ outb(xilinx_firm[16 + idx], info->program_regbase);
+ udelay(10);
+
+ /* Check if BUSY flag is low */
+ if (inl(info->plx_regbase + PLX_ICR) & 0x20) {
+ printk(KERN_ERR
+ "comedi%d: me4000: xilinx_download(): Xilinx is still busy (idx = %d)\n",
+ dev->minor, idx);
+ return -EIO;
+ }
+ }
+ }
+
+ /* If done flag is high download was successful */
+ if (inl(info->plx_regbase + PLX_ICR) & 0x4) {
+ } else {
+ printk(KERN_ERR
+ "comedi%d: me4000: xilinx_download(): DONE flag is not set\n",
+ dev->minor);
+ printk(KERN_ERR
+ "comedi%d: me4000: xilinx_download(): Download not succesful\n",
+ dev->minor);
+ return -EIO;
+ }
+
+ /* Set /CS and /WRITE */
+ value = inl(info->plx_regbase + PLX_ICR);
+ value |= 0x100;
+ outl(value, info->plx_regbase + PLX_ICR);
+
+ return 0;
+}
+
+static int reset_board(comedi_device * dev)
+{
+ unsigned long icr;
+
+ CALL_PDEBUG("In reset_board()\n");
+
+ /* Make a hardware reset */
+ icr = me4000_inl(dev, info->plx_regbase + PLX_ICR);
+ icr |= 0x40000000;
+ me4000_outl(dev, icr, info->plx_regbase + PLX_ICR);
+ icr &= ~0x40000000;
+ me4000_outl(dev, icr, info->plx_regbase + PLX_ICR);
+
+ /* 0x8000 to the DACs means an output voltage of 0V */
+ me4000_outl(dev, 0x8000,
+ info->me4000_regbase + ME4000_AO_00_SINGLE_REG);
+ me4000_outl(dev, 0x8000,
+ info->me4000_regbase + ME4000_AO_01_SINGLE_REG);
+ me4000_outl(dev, 0x8000,
+ info->me4000_regbase + ME4000_AO_02_SINGLE_REG);
+ me4000_outl(dev, 0x8000,
+ info->me4000_regbase + ME4000_AO_03_SINGLE_REG);
+
+ /* Set both stop bits in the analog input control register */
+ me4000_outl(dev,
+ ME4000_AI_CTRL_BIT_IMMEDIATE_STOP | ME4000_AI_CTRL_BIT_STOP,
+ info->me4000_regbase + ME4000_AI_CTRL_REG);
+
+ /* Set both stop bits in the analog output control register */
+ me4000_outl(dev,
+ ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
+ info->me4000_regbase + ME4000_AO_00_CTRL_REG);
+ me4000_outl(dev,
+ ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
+ info->me4000_regbase + ME4000_AO_01_CTRL_REG);
+ me4000_outl(dev,
+ ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
+ info->me4000_regbase + ME4000_AO_02_CTRL_REG);
+ me4000_outl(dev,
+ ME4000_AO_CTRL_BIT_IMMEDIATE_STOP | ME4000_AO_CTRL_BIT_STOP,
+ info->me4000_regbase + ME4000_AO_03_CTRL_REG);
+
+ /* Enable interrupts on the PLX */
+ me4000_outl(dev, 0x43, info->plx_regbase + PLX_INTCSR);
+
+ /* Set the adustment register for AO demux */
+ me4000_outl(dev, ME4000_AO_DEMUX_ADJUST_VALUE,
+ info->me4000_regbase + ME4000_AO_DEMUX_ADJUST_REG);
+
+ /* Set digital I/O direction for port 0 to output on isolated versions */
+ if (!(me4000_inl(dev, info->me4000_regbase + ME4000_DIO_DIR_REG) & 0x1)) {
+ me4000_outl(dev, 0x1,
+ info->me4000_regbase + ME4000_DIO_CTRL_REG);
+ }
+
+ return 0;
+}
+
+static int me4000_detach(comedi_device * dev)
+{
+ CALL_PDEBUG("In me4000_detach()\n");
+
+ if (info) {
+ if (info->pci_dev_p) {
+ reset_board(dev);
+ if (info->plx_regbase) {
+ comedi_pci_disable(info->pci_dev_p);
+ }
+ pci_dev_put(info->pci_dev_p);
+ }
+ }
+
+ return 0;
+}
+
+/*=============================================================================
+ Analog input section
+ ===========================================================================*/
+
+static int me4000_ai_insn_read(comedi_device * dev,
+ comedi_subdevice * subdevice, comedi_insn * insn, lsampl_t * data)
+{
+
+ int chan = CR_CHAN(insn->chanspec);
+ int rang = CR_RANGE(insn->chanspec);
+ int aref = CR_AREF(insn->chanspec);
+
+ unsigned long entry = 0;
+ unsigned long tmp;
+ long lval;
+
+ CALL_PDEBUG("In me4000_ai_insn_read()\n");
+
+ if (insn->n == 0) {
+ return 0;
+ } else if (insn->n > 1) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_insn_read(): Invalid instruction length %d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ switch (rang) {
+ case 0:
+ entry |= ME4000_AI_LIST_RANGE_UNIPOLAR_2_5;
+ break;
+ case 1:
+ entry |= ME4000_AI_LIST_RANGE_UNIPOLAR_10;
+ break;
+ case 2:
+ entry |= ME4000_AI_LIST_RANGE_BIPOLAR_2_5;
+ break;
+ case 3:
+ entry |= ME4000_AI_LIST_RANGE_BIPOLAR_10;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_insn_read(): Invalid range specified\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ switch (aref) {
+ case AREF_GROUND:
+ case AREF_COMMON:
+ if (chan >= thisboard->ai.count) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_insn_read(): Analog input is not available\n",
+ dev->minor);
+ return -EINVAL;
+ }
+ entry |= ME4000_AI_LIST_INPUT_SINGLE_ENDED | chan;
+ break;
+
+ case AREF_DIFF:
+ if (rang == 0 || rang == 1) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_insn_read(): Range must be bipolar when aref = diff\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ if (chan >= thisboard->ai.diff_count) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_insn_read(): Analog input is not available\n",
+ dev->minor);
+ return -EINVAL;
+ }
+ entry |= ME4000_AI_LIST_INPUT_DIFFERENTIAL | chan;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_insn_read(): Invalid aref specified\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ entry |= ME4000_AI_LIST_LAST_ENTRY;
+
+ /* Clear channel list, data fifo and both stop bits */
+ tmp = me4000_inl(dev, info->ai_context.ctrl_reg);
+ tmp &= ~(ME4000_AI_CTRL_BIT_CHANNEL_FIFO |
+ ME4000_AI_CTRL_BIT_DATA_FIFO |
+ ME4000_AI_CTRL_BIT_STOP | ME4000_AI_CTRL_BIT_IMMEDIATE_STOP);
+ me4000_outl(dev, tmp, info->ai_context.ctrl_reg);
+
+ /* Set the acquisition mode to single */
+ tmp &= ~(ME4000_AI_CTRL_BIT_MODE_0 | ME4000_AI_CTRL_BIT_MODE_1 |
+ ME4000_AI_CTRL_BIT_MODE_2);
+ me4000_outl(dev, tmp, info->ai_context.ctrl_reg);
+
+ /* Enable channel list and data fifo */
+ tmp |= ME4000_AI_CTRL_BIT_CHANNEL_FIFO | ME4000_AI_CTRL_BIT_DATA_FIFO;
+ me4000_outl(dev, tmp, info->ai_context.ctrl_reg);
+
+ /* Generate channel list entry */
+ me4000_outl(dev, entry, info->ai_context.channel_list_reg);
+
+ /* Set the timer to maximum sample rate */
+ me4000_outl(dev, ME4000_AI_MIN_TICKS, info->ai_context.chan_timer_reg);
+ me4000_outl(dev, ME4000_AI_MIN_TICKS,
+ info->ai_context.chan_pre_timer_reg);
+
+ /* Start conversion by dummy read */
+ me4000_inl(dev, info->ai_context.start_reg);
+
+ /* Wait until ready */
+ udelay(10);
+ if (!(me4000_inl(dev, info->ai_context.
+ status_reg) & ME4000_AI_STATUS_BIT_EF_DATA)) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_insn_read(): Value not available after wait\n",
+ dev->minor);
+ return -EIO;
+ }
+
+ /* Read value from data fifo */
+ lval = me4000_inl(dev, info->ai_context.data_reg) & 0xFFFF;
+ data[0] = lval ^ 0x8000;
+
+ return 1;
+}
+
+static int me4000_ai_cancel(comedi_device * dev, comedi_subdevice * s)
+{
+ unsigned long tmp;
+
+ CALL_PDEBUG("In me4000_ai_cancel()\n");
+
+ /* Stop any running conversion */
+ tmp = me4000_inl(dev, info->ai_context.ctrl_reg);
+ tmp &= ~(ME4000_AI_CTRL_BIT_STOP | ME4000_AI_CTRL_BIT_IMMEDIATE_STOP);
+ me4000_outl(dev, tmp, info->ai_context.ctrl_reg);
+
+ /* Clear the control register */
+ me4000_outl(dev, 0x0, info->ai_context.ctrl_reg);
+
+ return 0;
+}
+
+static int ai_check_chanlist(comedi_device * dev,
+ comedi_subdevice * s, comedi_cmd * cmd)
+{
+ int aref;
+ int i;
+
+ CALL_PDEBUG("In ai_check_chanlist()\n");
+
+ /* Check whether a channel list is available */
+ if (!cmd->chanlist_len) {
+ printk(KERN_ERR
+ "comedi%d: me4000: ai_check_chanlist(): No channel list available\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ /* Check the channel list size */
+ if (cmd->chanlist_len > ME4000_AI_CHANNEL_LIST_COUNT) {
+ printk(KERN_ERR
+ "comedi%d: me4000: ai_check_chanlist(): Channel list is to large\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ /* Check the pointer */
+ if (!cmd->chanlist) {
+ printk(KERN_ERR
+ "comedi%d: me4000: ai_check_chanlist(): NULL pointer to channel list\n",
+ dev->minor);
+ return -EFAULT;
+ }
+
+ /* Check whether aref is equal for all entries */
+ aref = CR_AREF(cmd->chanlist[0]);
+ for (i = 0; i < cmd->chanlist_len; i++) {
+ if (CR_AREF(cmd->chanlist[i]) != aref) {
+ printk(KERN_ERR
+ "comedi%d: me4000: ai_check_chanlist(): Mode is not equal for all entries\n",
+ dev->minor);
+ return -EINVAL;
+ }
+ }
+
+ /* Check whether channels are available for this ending */
+ if (aref == SDF_DIFF) {
+ for (i = 0; i < cmd->chanlist_len; i++) {
+ if (CR_CHAN(cmd->chanlist[i]) >=
+ thisboard->ai.diff_count) {
+ printk(KERN_ERR
+ "comedi%d: me4000: ai_check_chanlist(): Channel number to high\n",
+ dev->minor);
+ return -EINVAL;
+ }
+ }
+ } else {
+ for (i = 0; i < cmd->chanlist_len; i++) {
+ if (CR_CHAN(cmd->chanlist[i]) >= thisboard->ai.count) {
+ printk(KERN_ERR
+ "comedi%d: me4000: ai_check_chanlist(): Channel number to high\n",
+ dev->minor);
+ return -EINVAL;
+ }
+ }
+ }
+
+ /* Check if bipolar is set for all entries when in differential mode */
+ if (aref == SDF_DIFF) {
+ for (i = 0; i < cmd->chanlist_len; i++) {
+ if (CR_RANGE(cmd->chanlist[i]) != 1 &&
+ CR_RANGE(cmd->chanlist[i]) != 2) {
+ printk(KERN_ERR
+ "comedi%d: me4000: ai_check_chanlist(): Bipolar is not selected in differential mode\n",
+ dev->minor);
+ return -EINVAL;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int ai_round_cmd_args(comedi_device * dev,
+ comedi_subdevice * s,
+ comedi_cmd * cmd,
+ unsigned int *init_ticks,
+ unsigned int *scan_ticks, unsigned int *chan_ticks)
+{
+
+ int rest;
+
+ CALL_PDEBUG("In ai_round_cmd_args()\n");
+
+ *init_ticks = 0;
+ *scan_ticks = 0;
+ *chan_ticks = 0;
+
+ PDEBUG("ai_round_cmd_arg(): start_arg = %d\n", cmd->start_arg);
+ PDEBUG("ai_round_cmd_arg(): scan_begin_arg = %d\n",
+ cmd->scan_begin_arg);
+ PDEBUG("ai_round_cmd_arg(): convert_arg = %d\n", cmd->convert_arg);
+
+ if (cmd->start_arg) {
+ *init_ticks = (cmd->start_arg * 33) / 1000;
+ rest = (cmd->start_arg * 33) % 1000;
+
+ if (cmd->flags & TRIG_ROUND_NEAREST) {
+ if (rest > 33) {
+ (*init_ticks)++;
+ }
+ } else if (cmd->flags & TRIG_ROUND_UP) {
+ if (rest)
+ (*init_ticks)++;
+ }
+ }
+
+ if (cmd->scan_begin_arg) {
+ *scan_ticks = (cmd->scan_begin_arg * 33) / 1000;
+ rest = (cmd->scan_begin_arg * 33) % 1000;
+
+ if (cmd->flags & TRIG_ROUND_NEAREST) {
+ if (rest > 33) {
+ (*scan_ticks)++;
+ }
+ } else if (cmd->flags & TRIG_ROUND_UP) {
+ if (rest)
+ (*scan_ticks)++;
+ }
+ }
+
+ if (cmd->convert_arg) {
+ *chan_ticks = (cmd->convert_arg * 33) / 1000;
+ rest = (cmd->convert_arg * 33) % 1000;
+
+ if (cmd->flags & TRIG_ROUND_NEAREST) {
+ if (rest > 33) {
+ (*chan_ticks)++;
+ }
+ } else if (cmd->flags & TRIG_ROUND_UP) {
+ if (rest)
+ (*chan_ticks)++;
+ }
+ }
+
+ PDEBUG("ai_round_cmd_args(): init_ticks = %d\n", *init_ticks);
+ PDEBUG("ai_round_cmd_args(): scan_ticks = %d\n", *scan_ticks);
+ PDEBUG("ai_round_cmd_args(): chan_ticks = %d\n", *chan_ticks);
+
+ return 0;
+}
+
+static void ai_write_timer(comedi_device * dev,
+ unsigned int init_ticks,
+ unsigned int scan_ticks, unsigned int chan_ticks)
+{
+
+ CALL_PDEBUG("In ai_write_timer()\n");
+
+ me4000_outl(dev, init_ticks - 1,
+ info->ai_context.scan_pre_timer_low_reg);
+ me4000_outl(dev, 0x0, info->ai_context.scan_pre_timer_high_reg);
+
+ if (scan_ticks) {
+ me4000_outl(dev, scan_ticks - 1,
+ info->ai_context.scan_timer_low_reg);
+ me4000_outl(dev, 0x0, info->ai_context.scan_timer_high_reg);
+ }
+
+ me4000_outl(dev, chan_ticks - 1, info->ai_context.chan_pre_timer_reg);
+ me4000_outl(dev, chan_ticks - 1, info->ai_context.chan_timer_reg);
+}
+
+static int ai_prepare(comedi_device * dev,
+ comedi_subdevice * s,
+ comedi_cmd * cmd,
+ unsigned int init_ticks,
+ unsigned int scan_ticks, unsigned int chan_ticks)
+{
+
+ unsigned long tmp = 0;
+
+ CALL_PDEBUG("In ai_prepare()\n");
+
+ /* Write timer arguments */
+ ai_write_timer(dev, init_ticks, scan_ticks, chan_ticks);
+
+ /* Reset control register */
+ me4000_outl(dev, tmp, info->ai_context.ctrl_reg);
+
+ /* Start sources */
+ if ((cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_TIMER &&
+ cmd->convert_src == TRIG_TIMER) ||
+ (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_FOLLOW &&
+ cmd->convert_src == TRIG_TIMER)) {
+ tmp = ME4000_AI_CTRL_BIT_MODE_1 |
+ ME4000_AI_CTRL_BIT_CHANNEL_FIFO |
+ ME4000_AI_CTRL_BIT_DATA_FIFO;
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_EXT &&
+ cmd->convert_src == TRIG_TIMER) {
+ tmp = ME4000_AI_CTRL_BIT_MODE_2 |
+ ME4000_AI_CTRL_BIT_CHANNEL_FIFO |
+ ME4000_AI_CTRL_BIT_DATA_FIFO;
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_EXT &&
+ cmd->convert_src == TRIG_EXT) {
+ tmp = ME4000_AI_CTRL_BIT_MODE_0 |
+ ME4000_AI_CTRL_BIT_MODE_1 |
+ ME4000_AI_CTRL_BIT_CHANNEL_FIFO |
+ ME4000_AI_CTRL_BIT_DATA_FIFO;
+ } else {
+ tmp = ME4000_AI_CTRL_BIT_MODE_0 |
+ ME4000_AI_CTRL_BIT_CHANNEL_FIFO |
+ ME4000_AI_CTRL_BIT_DATA_FIFO;
+ }
+
+ /* Stop triggers */
+ if (cmd->stop_src == TRIG_COUNT) {
+ me4000_outl(dev, cmd->chanlist_len * cmd->stop_arg,
+ info->ai_context.sample_counter_reg);
+ tmp |= ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ;
+ } else if (cmd->stop_src == TRIG_NONE &&
+ cmd->scan_end_src == TRIG_COUNT) {
+ me4000_outl(dev, cmd->scan_end_arg,
+ info->ai_context.sample_counter_reg);
+ tmp |= ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ;
+ } else {
+ tmp |= ME4000_AI_CTRL_BIT_HF_IRQ;
+ }
+
+ /* Write the setup to the control register */
+ me4000_outl(dev, tmp, info->ai_context.ctrl_reg);
+
+ /* Write the channel list */
+ ai_write_chanlist(dev, s, cmd);
+
+ return 0;
+}
+
+static int ai_write_chanlist(comedi_device * dev,
+ comedi_subdevice * s, comedi_cmd * cmd)
+{
+ unsigned int entry;
+ unsigned int chan;
+ unsigned int rang;
+ unsigned int aref;
+ int i;
+
+ CALL_PDEBUG("In ai_write_chanlist()\n");
+
+ for (i = 0; i < cmd->chanlist_len; i++) {
+ chan = CR_CHAN(cmd->chanlist[i]);
+ rang = CR_RANGE(cmd->chanlist[i]);
+ aref = CR_AREF(cmd->chanlist[i]);
+
+ entry = chan;
+
+ if (rang == 0) {
+ entry |= ME4000_AI_LIST_RANGE_UNIPOLAR_2_5;
+ } else if (rang == 1) {
+ entry |= ME4000_AI_LIST_RANGE_UNIPOLAR_10;
+ } else if (rang == 2) {
+ entry |= ME4000_AI_LIST_RANGE_BIPOLAR_2_5;
+ } else {
+ entry |= ME4000_AI_LIST_RANGE_BIPOLAR_10;
+ }
+
+ if (aref == SDF_DIFF) {
+ entry |= ME4000_AI_LIST_INPUT_DIFFERENTIAL;
+ } else {
+ entry |= ME4000_AI_LIST_INPUT_SINGLE_ENDED;
+ }
+
+ me4000_outl(dev, entry, info->ai_context.channel_list_reg);
+ }
+
+ return 0;
+}
+
+static int me4000_ai_do_cmd(comedi_device * dev, comedi_subdevice * s)
+{
+ int err;
+ unsigned int init_ticks = 0;
+ unsigned int scan_ticks = 0;
+ unsigned int chan_ticks = 0;
+ comedi_cmd *cmd = &s->async->cmd;
+
+ CALL_PDEBUG("In me4000_ai_do_cmd()\n");
+
+ /* Reset the analog input */
+ err = me4000_ai_cancel(dev, s);
+ if (err)
+ return err;
+
+ /* Round the timer arguments */
+ err = ai_round_cmd_args(dev,
+ s, cmd, &init_ticks, &scan_ticks, &chan_ticks);
+ if (err)
+ return err;
+
+ /* Prepare the AI for acquisition */
+ err = ai_prepare(dev, s, cmd, init_ticks, scan_ticks, chan_ticks);
+ if (err)
+ return err;
+
+ /* Start acquistion by dummy read */
+ me4000_inl(dev, info->ai_context.start_reg);
+
+ return 0;
+}
+
+/*
+ * me4000_ai_do_cmd_test():
+ *
+ * The demo cmd.c in ./comedilib/demo specifies 6 return values:
+ * - success
+ * - invalid source
+ * - source conflict
+ * - invalid argument
+ * - argument conflict
+ * - invalid chanlist
+ * So I tried to adopt this scheme.
+ */
+static int me4000_ai_do_cmd_test(comedi_device * dev,
+ comedi_subdevice * s, comedi_cmd * cmd)
+{
+
+ unsigned int init_ticks;
+ unsigned int chan_ticks;
+ unsigned int scan_ticks;
+ int err = 0;
+
+ CALL_PDEBUG("In me4000_ai_do_cmd_test()\n");
+
+ PDEBUG("me4000_ai_do_cmd_test(): subdev = %d\n", cmd->subdev);
+ PDEBUG("me4000_ai_do_cmd_test(): flags = %08X\n", cmd->flags);
+ PDEBUG("me4000_ai_do_cmd_test(): start_src = %08X\n",
+ cmd->start_src);
+ PDEBUG("me4000_ai_do_cmd_test(): start_arg = %d\n",
+ cmd->start_arg);
+ PDEBUG("me4000_ai_do_cmd_test(): scan_begin_src = %08X\n",
+ cmd->scan_begin_src);
+ PDEBUG("me4000_ai_do_cmd_test(): scan_begin_arg = %d\n",
+ cmd->scan_begin_arg);
+ PDEBUG("me4000_ai_do_cmd_test(): convert_src = %08X\n",
+ cmd->convert_src);
+ PDEBUG("me4000_ai_do_cmd_test(): convert_arg = %d\n",
+ cmd->convert_arg);
+ PDEBUG("me4000_ai_do_cmd_test(): scan_end_src = %08X\n",
+ cmd->scan_end_src);
+ PDEBUG("me4000_ai_do_cmd_test(): scan_end_arg = %d\n",
+ cmd->scan_end_arg);
+ PDEBUG("me4000_ai_do_cmd_test(): stop_src = %08X\n",
+ cmd->stop_src);
+ PDEBUG("me4000_ai_do_cmd_test(): stop_arg = %d\n", cmd->stop_arg);
+ PDEBUG("me4000_ai_do_cmd_test(): chanlist = %d\n",
+ (unsigned int)cmd->chanlist);
+ PDEBUG("me4000_ai_do_cmd_test(): chanlist_len = %d\n",
+ cmd->chanlist_len);
+
+ /* Only rounding flags are implemented */
+ cmd->flags &= TRIG_ROUND_NEAREST | TRIG_ROUND_UP | TRIG_ROUND_DOWN;
+
+ /* Round the timer arguments */
+ ai_round_cmd_args(dev, s, cmd, &init_ticks, &scan_ticks, &chan_ticks);
+
+ /*
+ * Stage 1. Check if the trigger sources are generally valid.
+ */
+ switch (cmd->start_src) {
+ case TRIG_NOW:
+ case TRIG_EXT:
+ break;
+ case TRIG_ANY:
+ cmd->start_src &= TRIG_NOW | TRIG_EXT;
+ err++;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start source\n",
+ dev->minor);
+ cmd->start_src = TRIG_NOW;
+ err++;
+ }
+ switch (cmd->scan_begin_src) {
+ case TRIG_FOLLOW:
+ case TRIG_TIMER:
+ case TRIG_EXT:
+ break;
+ case TRIG_ANY:
+ cmd->scan_begin_src &= TRIG_FOLLOW | TRIG_TIMER | TRIG_EXT;
+ err++;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid scan begin source\n",
+ dev->minor);
+ cmd->scan_begin_src = TRIG_FOLLOW;
+ err++;
+ }
+ switch (cmd->convert_src) {
+ case TRIG_TIMER:
+ case TRIG_EXT:
+ break;
+ case TRIG_ANY:
+ cmd->convert_src &= TRIG_TIMER | TRIG_EXT;
+ err++;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid convert source\n",
+ dev->minor);
+ cmd->convert_src = TRIG_TIMER;
+ err++;
+ }
+ switch (cmd->scan_end_src) {
+ case TRIG_NONE:
+ case TRIG_COUNT:
+ break;
+ case TRIG_ANY:
+ cmd->scan_end_src &= TRIG_NONE | TRIG_COUNT;
+ err++;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid scan end source\n",
+ dev->minor);
+ cmd->scan_end_src = TRIG_NONE;
+ err++;
+ }
+ switch (cmd->stop_src) {
+ case TRIG_NONE:
+ case TRIG_COUNT:
+ break;
+ case TRIG_ANY:
+ cmd->stop_src &= TRIG_NONE | TRIG_COUNT;
+ err++;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid stop source\n",
+ dev->minor);
+ cmd->stop_src = TRIG_NONE;
+ err++;
+ }
+ if (err) {
+ return 1;
+ }
+
+ /*
+ * Stage 2. Check for trigger source conflicts.
+ */
+ if (cmd->start_src == TRIG_NOW &&
+ cmd->scan_begin_src == TRIG_TIMER &&
+ cmd->convert_src == TRIG_TIMER) {
+ } else if (cmd->start_src == TRIG_NOW &&
+ cmd->scan_begin_src == TRIG_FOLLOW &&
+ cmd->convert_src == TRIG_TIMER) {
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_TIMER &&
+ cmd->convert_src == TRIG_TIMER) {
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_FOLLOW &&
+ cmd->convert_src == TRIG_TIMER) {
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_EXT &&
+ cmd->convert_src == TRIG_TIMER) {
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_EXT &&
+ cmd->convert_src == TRIG_EXT) {
+ } else {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start trigger combination\n",
+ dev->minor);
+ cmd->start_src = TRIG_NOW;
+ cmd->scan_begin_src = TRIG_FOLLOW;
+ cmd->convert_src = TRIG_TIMER;
+ err++;
+ }
+
+ if (cmd->stop_src == TRIG_NONE && cmd->scan_end_src == TRIG_NONE) {
+ } else if (cmd->stop_src == TRIG_COUNT &&
+ cmd->scan_end_src == TRIG_NONE) {
+ } else if (cmd->stop_src == TRIG_NONE &&
+ cmd->scan_end_src == TRIG_COUNT) {
+ } else if (cmd->stop_src == TRIG_COUNT &&
+ cmd->scan_end_src == TRIG_COUNT) {
+ } else {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid stop trigger combination\n",
+ dev->minor);
+ cmd->stop_src = TRIG_NONE;
+ cmd->scan_end_src = TRIG_NONE;
+ err++;
+ }
+ if (err) {
+ return 2;
+ }
+
+ /*
+ * Stage 3. Check if arguments are generally valid.
+ */
+ if (cmd->chanlist_len < 1) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): No channel list\n",
+ dev->minor);
+ cmd->chanlist_len = 1;
+ err++;
+ }
+ if (init_ticks < 66) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Start arg to low\n",
+ dev->minor);
+ cmd->start_arg = 2000;
+ err++;
+ }
+ if (scan_ticks && scan_ticks < 67) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Scan begin arg to low\n",
+ dev->minor);
+ cmd->scan_begin_arg = 2031;
+ err++;
+ }
+ if (chan_ticks < 66) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Convert arg to low\n",
+ dev->minor);
+ cmd->convert_arg = 2000;
+ err++;
+ }
+ if (err) {
+ return 3;
+ }
+
+ /*
+ * Stage 4. Check for argument conflicts.
+ */
+ if (cmd->start_src == TRIG_NOW &&
+ cmd->scan_begin_src == TRIG_TIMER &&
+ cmd->convert_src == TRIG_TIMER) {
+
+ /* Check timer arguments */
+ if (init_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start arg\n",
+ dev->minor);
+ cmd->start_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ if (chan_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid convert arg\n",
+ dev->minor);
+ cmd->convert_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ if (scan_ticks <= cmd->chanlist_len * chan_ticks) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid scan end arg\n",
+ dev->minor);
+ cmd->scan_end_arg = 2000 * cmd->chanlist_len + 31; // At least one tick more
+ err++;
+ }
+ } else if (cmd->start_src == TRIG_NOW &&
+ cmd->scan_begin_src == TRIG_FOLLOW &&
+ cmd->convert_src == TRIG_TIMER) {
+
+ /* Check timer arguments */
+ if (init_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start arg\n",
+ dev->minor);
+ cmd->start_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ if (chan_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid convert arg\n",
+ dev->minor);
+ cmd->convert_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_TIMER &&
+ cmd->convert_src == TRIG_TIMER) {
+
+ /* Check timer arguments */
+ if (init_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start arg\n",
+ dev->minor);
+ cmd->start_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ if (chan_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid convert arg\n",
+ dev->minor);
+ cmd->convert_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ if (scan_ticks <= cmd->chanlist_len * chan_ticks) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid scan end arg\n",
+ dev->minor);
+ cmd->scan_end_arg = 2000 * cmd->chanlist_len + 31; // At least one tick more
+ err++;
+ }
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_FOLLOW &&
+ cmd->convert_src == TRIG_TIMER) {
+
+ /* Check timer arguments */
+ if (init_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start arg\n",
+ dev->minor);
+ cmd->start_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ if (chan_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid convert arg\n",
+ dev->minor);
+ cmd->convert_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_EXT &&
+ cmd->convert_src == TRIG_TIMER) {
+
+ /* Check timer arguments */
+ if (init_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start arg\n",
+ dev->minor);
+ cmd->start_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ if (chan_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid convert arg\n",
+ dev->minor);
+ cmd->convert_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ } else if (cmd->start_src == TRIG_EXT &&
+ cmd->scan_begin_src == TRIG_EXT &&
+ cmd->convert_src == TRIG_EXT) {
+
+ /* Check timer arguments */
+ if (init_ticks < ME4000_AI_MIN_TICKS) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid start arg\n",
+ dev->minor);
+ cmd->start_arg = 2000; // 66 ticks at least
+ err++;
+ }
+ }
+ if (cmd->stop_src == TRIG_COUNT) {
+ if (cmd->stop_arg == 0) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid stop arg\n",
+ dev->minor);
+ cmd->stop_arg = 1;
+ err++;
+ }
+ }
+ if (cmd->scan_end_src == TRIG_COUNT) {
+ if (cmd->scan_end_arg == 0) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_do_cmd_test(): Invalid scan end arg\n",
+ dev->minor);
+ cmd->scan_end_arg = 1;
+ err++;
+ }
+ }
+ if (err) {
+ return 4;
+ }
+
+ /*
+ * Stage 5. Check the channel list.
+ */
+ if (ai_check_chanlist(dev, s, cmd))
+ return 5;
+
+ return 0;
+}
+
+static irqreturn_t me4000_ai_isr(int irq, void *dev_id PT_REGS_ARG)
+{
+ unsigned int tmp;
+ comedi_device *dev = dev_id;
+ comedi_subdevice *s = dev->subdevices;
+ me4000_ai_context_t *ai_context = &info->ai_context;
+ int i;
+ int c = 0;
+ long lval;
+
+ ISR_PDEBUG("me4000_ai_isr() is executed\n");
+
+ if (!dev->attached) {
+ ISR_PDEBUG("me4000_ai_isr() premature interrupt\n");
+ return IRQ_NONE;
+ }
+
+ /* Reset all events */
+ s->async->events = 0;
+
+ /* Check if irq number is right */
+ if (irq != ai_context->irq) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_isr(): Incorrect interrupt num: %d\n",
+ dev->minor, irq);
+ return IRQ_HANDLED;
+ }
+
+ if (me4000_inl(dev,
+ ai_context->
+ irq_status_reg) & ME4000_IRQ_STATUS_BIT_AI_HF) {
+ ISR_PDEBUG
+ ("me4000_ai_isr(): Fifo half full interrupt occured\n");
+
+ /* Read status register to find out what happened */
+ tmp = me4000_inl(dev, ai_context->ctrl_reg);
+
+ if (!(tmp & ME4000_AI_STATUS_BIT_FF_DATA) &&
+ !(tmp & ME4000_AI_STATUS_BIT_HF_DATA) &&
+ (tmp & ME4000_AI_STATUS_BIT_EF_DATA)) {
+ ISR_PDEBUG("me4000_ai_isr(): Fifo full\n");
+ c = ME4000_AI_FIFO_COUNT;
+
+ /* FIFO overflow, so stop conversion and disable all interrupts */
+ tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
+ tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ |
+ ME4000_AI_CTRL_BIT_SC_IRQ);
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+
+ s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
+
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_isr(): FIFO overflow\n",
+ dev->minor);
+ } else if ((tmp & ME4000_AI_STATUS_BIT_FF_DATA)
+ && !(tmp & ME4000_AI_STATUS_BIT_HF_DATA)
+ && (tmp & ME4000_AI_STATUS_BIT_EF_DATA)) {
+ ISR_PDEBUG("me4000_ai_isr(): Fifo half full\n");
+
+ s->async->events |= COMEDI_CB_BLOCK;
+
+ c = ME4000_AI_FIFO_COUNT / 2;
+ } else {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_isr(): Can't determine state of fifo\n",
+ dev->minor);
+ c = 0;
+
+ /* Undefined state, so stop conversion and disable all interrupts */
+ tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
+ tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ |
+ ME4000_AI_CTRL_BIT_SC_IRQ);
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+
+ s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
+
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_isr(): Undefined FIFO state\n",
+ dev->minor);
+ }
+
+ ISR_PDEBUG("me4000_ai_isr(): Try to read %d values\n", c);
+
+ for (i = 0; i < c; i++) {
+ /* Read value from data fifo */
+ lval = inl(ai_context->data_reg) & 0xFFFF;
+ lval ^= 0x8000;
+
+ if (!comedi_buf_put(s->async, lval)) {
+ /* Buffer overflow, so stop conversion and disable all interrupts */
+ tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
+ tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ |
+ ME4000_AI_CTRL_BIT_SC_IRQ);
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+
+ s->async->events |= COMEDI_CB_OVERFLOW;
+
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_isr(): Buffer overflow\n",
+ dev->minor);
+
+ break;
+ }
+ }
+
+ /* Work is done, so reset the interrupt */
+ ISR_PDEBUG("me4000_ai_isr(): Reset fifo half full interrupt\n");
+ tmp |= ME4000_AI_CTRL_BIT_HF_IRQ_RESET;
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+ tmp &= ~ME4000_AI_CTRL_BIT_HF_IRQ_RESET;
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+ }
+
+ if (me4000_inl(dev,
+ ai_context->
+ irq_status_reg) & ME4000_IRQ_STATUS_BIT_SC) {
+ ISR_PDEBUG
+ ("me4000_ai_isr(): Sample counter interrupt occured\n");
+
+ s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOA;
+
+ /* Acquisition is complete, so stop conversion and disable all interrupts */
+ tmp = me4000_inl(dev, ai_context->ctrl_reg);
+ tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP;
+ tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ);
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+
+ /* Poll data until fifo empty */
+ while (inl(ai_context->ctrl_reg) & ME4000_AI_STATUS_BIT_EF_DATA) {
+ /* Read value from data fifo */
+ lval = inl(ai_context->data_reg) & 0xFFFF;
+ lval ^= 0x8000;
+
+ if (!comedi_buf_put(s->async, lval)) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ai_isr(): Buffer overflow\n",
+ dev->minor);
+ s->async->events |= COMEDI_CB_OVERFLOW;
+ break;
+ }
+ }
+
+ /* Work is done, so reset the interrupt */
+ ISR_PDEBUG
+ ("me4000_ai_isr(): Reset interrupt from sample counter\n");
+ tmp |= ME4000_AI_CTRL_BIT_SC_IRQ_RESET;
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+ tmp &= ~ME4000_AI_CTRL_BIT_SC_IRQ_RESET;
+ me4000_outl(dev, tmp, ai_context->ctrl_reg);
+ }
+
+ ISR_PDEBUG("me4000_ai_isr(): Events = 0x%X\n", s->async->events);
+
+ if (s->async->events)
+ comedi_event(dev, s);
+
+ return IRQ_HANDLED;
+}
+
+/*=============================================================================
+ Analog output section
+ ===========================================================================*/
+
+static int me4000_ao_insn_write(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data)
+{
+
+ int chan = CR_CHAN(insn->chanspec);
+ int rang = CR_RANGE(insn->chanspec);
+ int aref = CR_AREF(insn->chanspec);
+ unsigned long tmp;
+
+ CALL_PDEBUG("In me4000_ao_insn_write()\n");
+
+ if (insn->n == 0) {
+ return 0;
+ } else if (insn->n > 1) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ao_insn_write(): Invalid instruction length %d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ if (chan >= thisboard->ao.count) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ao_insn_write(): Invalid channel %d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ if (rang != 0) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ao_insn_write(): Invalid range %d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ if (aref != AREF_GROUND && aref != AREF_COMMON) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_ao_insn_write(): Invalid aref %d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ /* Stop any running conversion */
+ tmp = me4000_inl(dev, info->ao_context[chan].ctrl_reg);
+ tmp |= ME4000_AO_CTRL_BIT_IMMEDIATE_STOP;
+ me4000_outl(dev, tmp, info->ao_context[chan].ctrl_reg);
+
+ /* Clear control register and set to single mode */
+ me4000_outl(dev, 0x0, info->ao_context[chan].ctrl_reg);
+
+ /* Write data value */
+ me4000_outl(dev, data[0], info->ao_context[chan].single_reg);
+
+ /* Store in the mirror */
+ info->ao_context[chan].mirror = data[0];
+
+ return 1;
+}
+
+static int me4000_ao_insn_read(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data)
+{
+ int chan = CR_CHAN(insn->chanspec);
+
+ if (insn->n == 0) {
+ return 0;
+ } else if (insn->n > 1) {
+ printk("comedi%d: me4000: me4000_ao_insn_read(): Invalid instruction length\n", dev->minor);
+ return -EINVAL;
+ }
+
+ data[0] = info->ao_context[chan].mirror;
+
+ return 1;
+}
+
+/*=============================================================================
+ Digital I/O section
+ ===========================================================================*/
+
+static int me4000_dio_insn_bits(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data)
+{
+
+ CALL_PDEBUG("In me4000_dio_insn_bits()\n");
+
+ /* Length of data must be 2 (mask and new data, see below) */
+ if (insn->n == 0) {
+ return 0;
+ }
+ if (insn->n != 2) {
+ printk("comedi%d: me4000: me4000_dio_insn_bits(): Invalid instruction length\n", dev->minor);
+ return -EINVAL;
+ }
+
+ /*
+ * The insn data consists of a mask in data[0] and the new data
+ * in data[1]. The mask defines which bits we are concerning about.
+ * The new data must be anded with the mask.
+ * Each channel corresponds to a bit.
+ */
+ if (data[0]) {
+ /* Check if requested ports are configured for output */
+ if ((s->io_bits & data[0]) != data[0])
+ return -EIO;
+
+ s->state &= ~data[0];
+ s->state |= data[0] & data[1];
+
+ /* Write out the new digital output lines */
+ me4000_outl(dev, (s->state >> 0) & 0xFF,
+ info->dio_context.port_0_reg);
+ me4000_outl(dev, (s->state >> 8) & 0xFF,
+ info->dio_context.port_1_reg);
+ me4000_outl(dev, (s->state >> 16) & 0xFF,
+ info->dio_context.port_2_reg);
+ me4000_outl(dev, (s->state >> 24) & 0xFF,
+ info->dio_context.port_3_reg);
+ }
+
+ /* On return, data[1] contains the value of
+ the digital input and output lines. */
+ data[1] =
+ ((me4000_inl(dev, info->dio_context.port_0_reg) & 0xFF) << 0) |
+ ((me4000_inl(dev, info->dio_context.port_1_reg) & 0xFF) << 8) |
+ ((me4000_inl(dev, info->dio_context.port_2_reg) & 0xFF) << 16) |
+ ((me4000_inl(dev, info->dio_context.port_3_reg) & 0xFF) << 24);
+
+ return 2;
+}
+
+static int me4000_dio_insn_config(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data)
+{
+ unsigned long tmp;
+ int chan = CR_CHAN(insn->chanspec);
+
+ CALL_PDEBUG("In me4000_dio_insn_config()\n");
+
+ if (data[0] == INSN_CONFIG_DIO_QUERY) {
+ data[1] =
+ (s->
+ io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
+ return insn->n;
+ }
+
+ /*
+ * The input or output configuration of each digital line is
+ * configured by a special insn_config instruction. chanspec
+ * contains the channel to be changed, and data[0] contains the
+ * value COMEDI_INPUT or COMEDI_OUTPUT.
+ * On the ME-4000 it is only possible to switch port wise (8 bit)
+ */
+
+ tmp = me4000_inl(dev, info->dio_context.ctrl_reg);
+
+ if (data[0] == COMEDI_OUTPUT) {
+ if (chan < 8) {
+ s->io_bits |= 0xFF;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_0 |
+ ME4000_DIO_CTRL_BIT_MODE_1);
+ tmp |= ME4000_DIO_CTRL_BIT_MODE_0;
+ } else if (chan < 16) {
+ /*
+ * Chech for optoisolated ME-4000 version. If one the first
+ * port is a fixed output port and the second is a fixed input port.
+ */
+ if (!me4000_inl(dev, info->dio_context.dir_reg))
+ return -ENODEV;
+
+ s->io_bits |= 0xFF00;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_2 |
+ ME4000_DIO_CTRL_BIT_MODE_3);
+ tmp |= ME4000_DIO_CTRL_BIT_MODE_2;
+ } else if (chan < 24) {
+ s->io_bits |= 0xFF0000;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_4 |
+ ME4000_DIO_CTRL_BIT_MODE_5);
+ tmp |= ME4000_DIO_CTRL_BIT_MODE_4;
+ } else if (chan < 32) {
+ s->io_bits |= 0xFF000000;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_6 |
+ ME4000_DIO_CTRL_BIT_MODE_7);
+ tmp |= ME4000_DIO_CTRL_BIT_MODE_6;
+ } else {
+ return -EINVAL;
+ }
+ } else {
+ if (chan < 8) {
+ /*
+ * Chech for optoisolated ME-4000 version. If one the first
+ * port is a fixed output port and the second is a fixed input port.
+ */
+ if (!me4000_inl(dev, info->dio_context.dir_reg))
+ return -ENODEV;
+
+ s->io_bits &= ~0xFF;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_0 |
+ ME4000_DIO_CTRL_BIT_MODE_1);
+ } else if (chan < 16) {
+ s->io_bits &= ~0xFF00;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_2 |
+ ME4000_DIO_CTRL_BIT_MODE_3);
+ } else if (chan < 24) {
+ s->io_bits &= ~0xFF0000;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_4 |
+ ME4000_DIO_CTRL_BIT_MODE_5);
+ } else if (chan < 32) {
+ s->io_bits &= ~0xFF000000;
+ tmp &= ~(ME4000_DIO_CTRL_BIT_MODE_6 |
+ ME4000_DIO_CTRL_BIT_MODE_7);
+ } else {
+ return -EINVAL;
+ }
+ }
+
+ me4000_outl(dev, tmp, info->dio_context.ctrl_reg);
+
+ return 1;
+}
+
+/*=============================================================================
+ Counter section
+ ===========================================================================*/
+
+static int cnt_reset(comedi_device * dev, unsigned int channel)
+{
+
+ CALL_PDEBUG("In cnt_reset()\n");
+
+ switch (channel) {
+ case 0:
+ me4000_outb(dev, 0x30, info->cnt_context.ctrl_reg);
+ me4000_outb(dev, 0x00, info->cnt_context.counter_0_reg);
+ me4000_outb(dev, 0x00, info->cnt_context.counter_0_reg);
+ break;
+ case 1:
+ me4000_outb(dev, 0x70, info->cnt_context.ctrl_reg);
+ me4000_outb(dev, 0x00, info->cnt_context.counter_1_reg);
+ me4000_outb(dev, 0x00, info->cnt_context.counter_1_reg);
+ break;
+ case 2:
+ me4000_outb(dev, 0xB0, info->cnt_context.ctrl_reg);
+ me4000_outb(dev, 0x00, info->cnt_context.counter_2_reg);
+ me4000_outb(dev, 0x00, info->cnt_context.counter_2_reg);
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: cnt_reset(): Invalid channel\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int cnt_config(comedi_device * dev, unsigned int channel,
+ unsigned int mode)
+{
+ int tmp = 0;
+
+ CALL_PDEBUG("In cnt_config()\n");
+
+ switch (channel) {
+ case 0:
+ tmp |= ME4000_CNT_COUNTER_0;
+ break;
+ case 1:
+ tmp |= ME4000_CNT_COUNTER_1;
+ break;
+ case 2:
+ tmp |= ME4000_CNT_COUNTER_2;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: cnt_config(): Invalid channel\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ switch (mode) {
+ case 0:
+ tmp |= ME4000_CNT_MODE_0;
+ break;
+ case 1:
+ tmp |= ME4000_CNT_MODE_1;
+ break;
+ case 2:
+ tmp |= ME4000_CNT_MODE_2;
+ break;
+ case 3:
+ tmp |= ME4000_CNT_MODE_3;
+ break;
+ case 4:
+ tmp |= ME4000_CNT_MODE_4;
+ break;
+ case 5:
+ tmp |= ME4000_CNT_MODE_5;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: cnt_config(): Invalid counter mode\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ /* Write the control word */
+ tmp |= 0x30;
+ me4000_outb(dev, tmp, info->cnt_context.ctrl_reg);
+
+ return 0;
+}
+
+static int me4000_cnt_insn_config(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data)
+{
+
+ int err;
+
+ CALL_PDEBUG("In me4000_cnt_insn_config()\n");
+
+ switch (data[0]) {
+ case GPCT_RESET:
+ if (insn->n != 1) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_cnt_insn_config(): Invalid instruction length%d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ err = cnt_reset(dev, insn->chanspec);
+ if (err)
+ return err;
+ break;
+ case GPCT_SET_OPERATION:
+ if (insn->n != 2) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_cnt_insn_config(): Invalid instruction length%d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ err = cnt_config(dev, insn->chanspec, data[1]);
+ if (err)
+ return err;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_cnt_insn_config(): Invalid instruction\n",
+ dev->minor);
+ return -EINVAL;
+ }
+
+ return 2;
+}
+
+static int me4000_cnt_insn_read(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data)
+{
+
+ unsigned short tmp;
+
+ CALL_PDEBUG("In me4000_cnt_insn_read()\n");
+
+ if (insn->n == 0) {
+ return 0;
+ }
+ if (insn->n > 1) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_cnt_insn_read(): Invalid instruction length %d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ switch (insn->chanspec) {
+ case 0:
+ tmp = me4000_inb(dev, info->cnt_context.counter_0_reg);
+ data[0] = tmp;
+ tmp = me4000_inb(dev, info->cnt_context.counter_0_reg);
+ data[0] |= tmp << 8;
+ break;
+ case 1:
+ tmp = me4000_inb(dev, info->cnt_context.counter_1_reg);
+ data[0] = tmp;
+ tmp = me4000_inb(dev, info->cnt_context.counter_1_reg);
+ data[0] |= tmp << 8;
+ break;
+ case 2:
+ tmp = me4000_inb(dev, info->cnt_context.counter_2_reg);
+ data[0] = tmp;
+ tmp = me4000_inb(dev, info->cnt_context.counter_2_reg);
+ data[0] |= tmp << 8;
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_cnt_insn_read(): Invalid channel %d\n",
+ dev->minor, insn->chanspec);
+ return -EINVAL;
+ }
+
+ return 1;
+}
+
+static int me4000_cnt_insn_write(comedi_device * dev,
+ comedi_subdevice * s, comedi_insn * insn, lsampl_t * data)
+{
+
+ unsigned short tmp;
+
+ CALL_PDEBUG("In me4000_cnt_insn_write()\n");
+
+ if (insn->n == 0) {
+ return 0;
+ } else if (insn->n > 1) {
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_cnt_insn_write(): Invalid instruction length %d\n",
+ dev->minor, insn->n);
+ return -EINVAL;
+ }
+
+ switch (insn->chanspec) {
+ case 0:
+ tmp = data[0] & 0xFF;
+ me4000_outb(dev, tmp, info->cnt_context.counter_0_reg);
+ tmp = (data[0] >> 8) & 0xFF;
+ me4000_outb(dev, tmp, info->cnt_context.counter_0_reg);
+ break;
+ case 1:
+ tmp = data[0] & 0xFF;
+ me4000_outb(dev, tmp, info->cnt_context.counter_1_reg);
+ tmp = (data[0] >> 8) & 0xFF;
+ me4000_outb(dev, tmp, info->cnt_context.counter_1_reg);
+ break;
+ case 2:
+ tmp = data[0] & 0xFF;
+ me4000_outb(dev, tmp, info->cnt_context.counter_2_reg);
+ tmp = (data[0] >> 8) & 0xFF;
+ me4000_outb(dev, tmp, info->cnt_context.counter_2_reg);
+ break;
+ default:
+ printk(KERN_ERR
+ "comedi%d: me4000: me4000_cnt_insn_write(): Invalid channel %d\n",
+ dev->minor, insn->chanspec);
+ return -EINVAL;
+ }
+
+ return 1;
+}
+
+COMEDI_PCI_INITCLEANUP(driver_me4000, me4000_pci_table);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.