aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/comedi/kcomedilib
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/staging/comedi/kcomedilib')
-rw-r--r--drivers/staging/comedi/kcomedilib/Makefile8
-rw-r--r--drivers/staging/comedi/kcomedilib/data.c89
-rw-r--r--drivers/staging/comedi/kcomedilib/dio.c95
-rw-r--r--drivers/staging/comedi/kcomedilib/get.c294
-rw-r--r--drivers/staging/comedi/kcomedilib/kcomedilib_main.c567
-rw-r--r--drivers/staging/comedi/kcomedilib/ksyms.c144
6 files changed, 1197 insertions, 0 deletions
diff --git a/drivers/staging/comedi/kcomedilib/Makefile b/drivers/staging/comedi/kcomedilib/Makefile
new file mode 100644
index 000000000000..ffcc9ad32adb
--- /dev/null
+++ b/drivers/staging/comedi/kcomedilib/Makefile
@@ -0,0 +1,8 @@
+obj-$(CONFIG_COMEDI) += kcomedilib.o
+
+kcomedilib-objs := \
+ data.o \
+ ksyms.o \
+ dio.o \
+ kcomedilib_main.o \
+ get.o
diff --git a/drivers/staging/comedi/kcomedilib/data.c b/drivers/staging/comedi/kcomedilib/data.c
new file mode 100644
index 000000000000..79aec2041150
--- /dev/null
+++ b/drivers/staging/comedi/kcomedilib/data.c
@@ -0,0 +1,89 @@
+/*
+ kcomedilib/data.c
+ implements comedi_data_*() functions
+
+ 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.
+
+*/
+
+#include "../comedi.h"
+#include "../comedilib.h"
+#include "../comedidev.h" /* for comedi_udelay() */
+
+#include <linux/string.h>
+
+int comedi_data_write(comedi_t * dev, unsigned int subdev, unsigned int chan,
+ unsigned int range, unsigned int aref, lsampl_t data)
+{
+ comedi_insn insn;
+
+ memset(&insn, 0, sizeof(insn));
+ insn.insn = INSN_WRITE;
+ insn.n = 1;
+ insn.data = &data;
+ insn.subdev = subdev;
+ insn.chanspec = CR_PACK(chan, range, aref);
+
+ return comedi_do_insn(dev, &insn);
+}
+
+int comedi_data_read(comedi_t * dev, unsigned int subdev, unsigned int chan,
+ unsigned int range, unsigned int aref, lsampl_t * data)
+{
+ comedi_insn insn;
+
+ memset(&insn, 0, sizeof(insn));
+ insn.insn = INSN_READ;
+ insn.n = 1;
+ insn.data = data;
+ insn.subdev = subdev;
+ insn.chanspec = CR_PACK(chan, range, aref);
+
+ return comedi_do_insn(dev, &insn);
+}
+
+int comedi_data_read_hint(comedi_t * dev, unsigned int subdev,
+ unsigned int chan, unsigned int range, unsigned int aref)
+{
+ comedi_insn insn;
+ lsampl_t dummy_data;
+
+ memset(&insn, 0, sizeof(insn));
+ insn.insn = INSN_READ;
+ insn.n = 0;
+ insn.data = &dummy_data;
+ insn.subdev = subdev;
+ insn.chanspec = CR_PACK(chan, range, aref);
+
+ return comedi_do_insn(dev, &insn);
+}
+
+int comedi_data_read_delayed(comedi_t * dev, unsigned int subdev,
+ unsigned int chan, unsigned int range, unsigned int aref,
+ lsampl_t * data, unsigned int nano_sec)
+{
+ int retval;
+
+ retval = comedi_data_read_hint(dev, subdev, chan, range, aref);
+ if (retval < 0)
+ return retval;
+
+ comedi_udelay((nano_sec + 999) / 1000);
+
+ return comedi_data_read(dev, subdev, chan, range, aref, data);
+}
diff --git a/drivers/staging/comedi/kcomedilib/dio.c b/drivers/staging/comedi/kcomedilib/dio.c
new file mode 100644
index 000000000000..a9f488aed369
--- /dev/null
+++ b/drivers/staging/comedi/kcomedilib/dio.c
@@ -0,0 +1,95 @@
+/*
+ kcomedilib/dio.c
+ implements comedi_dio_*() functions
+
+ 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.
+
+*/
+
+#include "../comedi.h"
+#include "../comedilib.h"
+
+#include <linux/string.h>
+
+int comedi_dio_config(comedi_t * dev, unsigned int subdev, unsigned int chan,
+ unsigned int io)
+{
+ comedi_insn insn;
+
+ memset(&insn, 0, sizeof(insn));
+ insn.insn = INSN_CONFIG;
+ insn.n = 1;
+ insn.data = &io;
+ insn.subdev = subdev;
+ insn.chanspec = CR_PACK(chan, 0, 0);
+
+ return comedi_do_insn(dev, &insn);
+}
+
+int comedi_dio_read(comedi_t * dev, unsigned int subdev, unsigned int chan,
+ unsigned int *val)
+{
+ comedi_insn insn;
+
+ memset(&insn, 0, sizeof(insn));
+ insn.insn = INSN_READ;
+ insn.n = 1;
+ insn.data = val;
+ insn.subdev = subdev;
+ insn.chanspec = CR_PACK(chan, 0, 0);
+
+ return comedi_do_insn(dev, &insn);
+}
+
+int comedi_dio_write(comedi_t * dev, unsigned int subdev, unsigned int chan,
+ unsigned int val)
+{
+ comedi_insn insn;
+
+ memset(&insn, 0, sizeof(insn));
+ insn.insn = INSN_WRITE;
+ insn.n = 1;
+ insn.data = &val;
+ insn.subdev = subdev;
+ insn.chanspec = CR_PACK(chan, 0, 0);
+
+ return comedi_do_insn(dev, &insn);
+}
+
+int comedi_dio_bitfield(comedi_t * dev, unsigned int subdev, unsigned int mask,
+ unsigned int *bits)
+{
+ comedi_insn insn;
+ lsampl_t data[2];
+ int ret;
+
+ memset(&insn, 0, sizeof(insn));
+ insn.insn = INSN_BITS;
+ insn.n = 2;
+ insn.data = data;
+ insn.subdev = subdev;
+
+ data[0] = mask;
+ data[1] = *bits;
+
+ ret = comedi_do_insn(dev, &insn);
+
+ *bits = data[1];
+
+ return ret;
+}
diff --git a/drivers/staging/comedi/kcomedilib/get.c b/drivers/staging/comedi/kcomedilib/get.c
new file mode 100644
index 000000000000..2004ad4480c0
--- /dev/null
+++ b/drivers/staging/comedi/kcomedilib/get.c
@@ -0,0 +1,294 @@
+/*
+ kcomedilib/get.c
+ a comedlib interface for kernel modules
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 1997-2000 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.
+
+*/
+
+#define __NO_VERSION__
+#include "../comedi.h"
+#include "../comedilib.h"
+#include "../comedidev.h"
+
+int comedi_get_n_subdevices(comedi_t * d)
+{
+ comedi_device *dev = (comedi_device *) d;
+
+ return dev->n_subdevices;
+}
+
+int comedi_get_version_code(comedi_t * d)
+{
+ return COMEDI_VERSION_CODE;
+}
+
+const char *comedi_get_driver_name(comedi_t * d)
+{
+ comedi_device *dev = (comedi_device *) d;
+
+ return dev->driver->driver_name;
+}
+
+const char *comedi_get_board_name(comedi_t * d)
+{
+ comedi_device *dev = (comedi_device *) d;
+
+ return dev->board_name;
+}
+
+int comedi_get_subdevice_type(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+
+ return s->type;
+}
+
+unsigned int comedi_get_subdevice_flags(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+
+ return s->subdev_flags;
+}
+
+int comedi_find_subdevice_by_type(comedi_t * d, int type, unsigned int subd)
+{
+ comedi_device *dev = (comedi_device *) d;
+
+ if (subd > dev->n_subdevices)
+ return -ENODEV;
+
+ for (; subd < dev->n_subdevices; subd++) {
+ if (dev->subdevices[subd].type == type)
+ return subd;
+ }
+ return -1;
+}
+
+int comedi_get_n_channels(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+
+ return s->n_chan;
+}
+
+int comedi_get_len_chanlist(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+
+ return s->len_chanlist;
+}
+
+lsampl_t comedi_get_maxdata(comedi_t * d, unsigned int subdevice,
+ unsigned int chan)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+
+ if (s->maxdata_list)
+ return s->maxdata_list[chan];
+
+ return s->maxdata;
+}
+
+#ifdef KCOMEDILIB_DEPRECATED
+int comedi_get_rangetype(comedi_t * d, unsigned int subdevice,
+ unsigned int chan)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ int ret;
+
+ if (s->range_table_list) {
+ ret = s->range_table_list[chan]->length;
+ } else {
+ ret = s->range_table->length;
+ }
+
+ ret = ret | (dev->minor << 28) | (subdevice << 24) | (chan << 16);
+
+ return ret;
+}
+#endif
+
+int comedi_get_n_ranges(comedi_t * d, unsigned int subdevice, unsigned int chan)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ int ret;
+
+ if (s->range_table_list) {
+ ret = s->range_table_list[chan]->length;
+ } else {
+ ret = s->range_table->length;
+ }
+
+ return ret;
+}
+
+/*
+ * ALPHA (non-portable)
+*/
+int comedi_get_krange(comedi_t * d, unsigned int subdevice, unsigned int chan,
+ unsigned int range, comedi_krange * krange)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ const comedi_lrange *lr;
+
+ if (s->range_table_list) {
+ lr = s->range_table_list[chan];
+ } else {
+ lr = s->range_table;
+ }
+ if (range >= lr->length) {
+ return -EINVAL;
+ }
+ memcpy(krange, lr->range + range, sizeof(comedi_krange));
+
+ return 0;
+}
+
+/*
+ * ALPHA (may be renamed)
+*/
+unsigned int comedi_get_buf_head_pos(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ comedi_async *async;
+
+ async = s->async;
+ if (async == NULL)
+ return 0;
+
+ return async->buf_write_count;
+}
+
+int comedi_get_buffer_contents(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ comedi_async *async;
+ unsigned int num_bytes;
+
+ if (subdevice >= dev->n_subdevices)
+ return -1;
+ async = s->async;
+ if (async == NULL)
+ return 0;
+ num_bytes = comedi_buf_read_n_available(s->async);
+ return num_bytes;
+}
+
+/*
+ * ALPHA
+*/
+int comedi_set_user_int_count(comedi_t * d, unsigned int subdevice,
+ unsigned int buf_user_count)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ comedi_async *async;
+ int num_bytes;
+
+ async = s->async;
+ if (async == NULL)
+ return -1;
+
+ num_bytes = buf_user_count - async->buf_read_count;
+ if (num_bytes < 0)
+ return -1;
+ comedi_buf_read_alloc(async, num_bytes);
+ comedi_buf_read_free(async, num_bytes);
+
+ return 0;
+}
+
+int comedi_mark_buffer_read(comedi_t * d, unsigned int subdevice,
+ unsigned int num_bytes)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ comedi_async *async;
+
+ if (subdevice >= dev->n_subdevices)
+ return -1;
+ async = s->async;
+ if (async == NULL)
+ return -1;
+
+ comedi_buf_read_alloc(async, num_bytes);
+ comedi_buf_read_free(async, num_bytes);
+
+ return 0;
+}
+
+int comedi_mark_buffer_written(comedi_t * d, unsigned int subdevice,
+ unsigned int num_bytes)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ comedi_async *async;
+ int bytes_written;
+
+ if (subdevice >= dev->n_subdevices)
+ return -1;
+ async = s->async;
+ if (async == NULL)
+ return -1;
+ bytes_written = comedi_buf_write_alloc(async, num_bytes);
+ comedi_buf_write_free(async, bytes_written);
+ if (bytes_written != num_bytes)
+ return -1;
+ return 0;
+}
+
+int comedi_get_buffer_size(comedi_t * d, unsigned int subdev)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdev;
+ comedi_async *async;
+
+ if (subdev >= dev->n_subdevices)
+ return -1;
+ async = s->async;
+ if (async == NULL)
+ return 0;
+
+ return async->prealloc_bufsz;
+}
+
+int comedi_get_buffer_offset(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices + subdevice;
+ comedi_async *async;
+
+ if (subdevice >= dev->n_subdevices)
+ return -1;
+ async = s->async;
+ if (async == NULL)
+ return 0;
+
+ return async->buf_read_ptr;
+}
diff --git a/drivers/staging/comedi/kcomedilib/kcomedilib_main.c b/drivers/staging/comedi/kcomedilib/kcomedilib_main.c
new file mode 100644
index 000000000000..510fbdcec493
--- /dev/null
+++ b/drivers/staging/comedi/kcomedilib/kcomedilib_main.c
@@ -0,0 +1,567 @@
+/*
+ kcomedilib/kcomedilib.c
+ a comedlib interface for kernel modules
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 1997-2000 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.
+
+*/
+
+#define __NO_VERSION__
+#include <linux/module.h>
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fcntl.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <asm/io.h>
+
+#include "../comedi.h"
+#include "../comedilib.h"
+#include "../comedidev.h"
+
+MODULE_AUTHOR("David Schleef <ds@schleef.org>");
+MODULE_DESCRIPTION("Comedi kernel library");
+MODULE_LICENSE("GPL");
+
+comedi_t *comedi_open(const char *filename)
+{
+ struct comedi_device_file_info *dev_file_info;
+ comedi_device *dev;
+ unsigned int minor;
+
+ if (strncmp(filename, "/dev/comedi", 11) != 0)
+ return NULL;
+
+ minor = simple_strtoul(filename + 11, NULL, 0);
+
+ if (minor >= COMEDI_NUM_BOARD_MINORS)
+ return NULL;
+
+ dev_file_info = comedi_get_device_file_info(minor);
+ if(dev_file_info == NULL)
+ return NULL;
+ dev = dev_file_info->device;
+
+ if(dev == NULL || !dev->attached)
+ return NULL;
+
+ if (!try_module_get(dev->driver->module))
+ return NULL;
+
+ return (comedi_t *) dev;
+}
+
+comedi_t *comedi_open_old(unsigned int minor)
+{
+ struct comedi_device_file_info *dev_file_info;
+ comedi_device *dev;
+
+ if (minor >= COMEDI_NUM_MINORS)
+ return NULL;
+
+ dev_file_info = comedi_get_device_file_info(minor);
+ if(dev_file_info == NULL)
+ return NULL;
+ dev = dev_file_info->device;
+
+ if(dev == NULL || !dev->attached)
+ return NULL;
+
+ return (comedi_t *) dev;
+}
+
+int comedi_close(comedi_t * d)
+{
+ comedi_device *dev = (comedi_device *) d;
+
+ module_put(dev->driver->module);
+
+ return 0;
+}
+
+int comedi_loglevel(int newlevel)
+{
+ return 0;
+}
+
+void comedi_perror(const char *message)
+{
+ rt_printk("%s: unknown error\n", message);
+}
+
+char *comedi_strerror(int err)
+{
+ return "unknown error";
+}
+
+int comedi_fileno(comedi_t * d)
+{
+ comedi_device *dev = (comedi_device *) d;
+
+ /* return something random */
+ return dev->minor;
+}
+
+int comedi_command(comedi_t * d, comedi_cmd * cmd)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+ comedi_async *async;
+ unsigned runflags;
+
+ if (cmd->subdev >= dev->n_subdevices)
+ return -ENODEV;
+
+ s = dev->subdevices + cmd->subdev;
+ if (s->type == COMEDI_SUBD_UNUSED)
+ return -EIO;
+
+ async = s->async;
+ if (async == NULL)
+ return -ENODEV;
+
+ if (s->busy)
+ return -EBUSY;
+ s->busy = d;
+
+ if (async->cb_mask & COMEDI_CB_EOS)
+ cmd->flags |= TRIG_WAKE_EOS;
+
+ async->cmd = *cmd;
+
+ runflags = SRF_RUNNING;
+
+#ifdef CONFIG_COMEDI_RT
+ if (comedi_switch_to_rt(dev) == 0)
+ runflags |= SRF_RT;
+#endif
+ comedi_set_subdevice_runflags(s, ~0, runflags);
+
+ comedi_reset_async_buf(async);
+
+ return s->do_cmd(dev, s);
+}
+
+int comedi_command_test(comedi_t * d, comedi_cmd * cmd)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+
+ if (cmd->subdev >= dev->n_subdevices)
+ return -ENODEV;
+
+ s = dev->subdevices + cmd->subdev;
+ if (s->type == COMEDI_SUBD_UNUSED)
+ return -EIO;
+
+ if (s->async == NULL)
+ return -ENODEV;
+
+ return s->do_cmdtest(dev, s, cmd);
+}
+
+/*
+ * COMEDI_INSN
+ * perform an instruction
+ */
+int comedi_do_insn(comedi_t * d, comedi_insn * insn)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+ int ret = 0;
+
+ if (insn->insn & INSN_MASK_SPECIAL) {
+ switch (insn->insn) {
+ case INSN_GTOD:
+ {
+ struct timeval tv;
+
+ do_gettimeofday(&tv);
+ insn->data[0] = tv.tv_sec;
+ insn->data[1] = tv.tv_usec;
+ ret = 2;
+
+ break;
+ }
+ case INSN_WAIT:
+ /* XXX isn't the value supposed to be nanosecs? */
+ if (insn->n != 1 || insn->data[0] >= 100) {
+ ret = -EINVAL;
+ break;
+ }
+ comedi_udelay(insn->data[0]);
+ ret = 1;
+ break;
+ case INSN_INTTRIG:
+ if (insn->n != 1) {
+ ret = -EINVAL;
+ break;
+ }
+ if (insn->subdev >= dev->n_subdevices) {
+ rt_printk("%d not usable subdevice\n",
+ insn->subdev);
+ ret = -EINVAL;
+ break;
+ }
+ s = dev->subdevices + insn->subdev;
+ if (!s->async) {
+ rt_printk("no async\n");
+ ret = -EINVAL;
+ break;
+ }
+ if (!s->async->inttrig) {
+ rt_printk("no inttrig\n");
+ ret = -EAGAIN;
+ break;
+ }
+ ret = s->async->inttrig(dev, s, insn->data[0]);
+ if (ret >= 0)
+ ret = 1;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ } else {
+ /* a subdevice instruction */
+ if (insn->subdev >= dev->n_subdevices) {
+ ret = -EINVAL;
+ goto error;
+ }
+ s = dev->subdevices + insn->subdev;
+
+ if (s->type == COMEDI_SUBD_UNUSED) {
+ rt_printk("%d not useable subdevice\n", insn->subdev);
+ ret = -EIO;
+ goto error;
+ }
+
+ /* XXX check lock */
+
+ if ((ret = check_chanlist(s, 1, &insn->chanspec)) < 0) {
+ rt_printk("bad chanspec\n");
+ ret = -EINVAL;
+ goto error;
+ }
+
+ if (s->busy) {
+ ret = -EBUSY;
+ goto error;
+ }
+ s->busy = d;
+
+ switch (insn->insn) {
+ case INSN_READ:
+ ret = s->insn_read(dev, s, insn, insn->data);
+ break;
+ case INSN_WRITE:
+ ret = s->insn_write(dev, s, insn, insn->data);
+ break;
+ case INSN_BITS:
+ ret = s->insn_bits(dev, s, insn, insn->data);
+ break;
+ case INSN_CONFIG:
+ /* XXX should check instruction length */
+ ret = s->insn_config(dev, s, insn, insn->data);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ s->busy = NULL;
+ }
+ if (ret < 0)
+ goto error;
+#if 0
+ /* XXX do we want this? -- abbotti #if'ed it out for now. */
+ if (ret != insn->n) {
+ rt_printk("BUG: result of insn != insn.n\n");
+ ret = -EINVAL;
+ goto error;
+ }
+#endif
+ error:
+
+ return ret;
+}
+
+/*
+ COMEDI_LOCK
+ lock subdevice
+
+ arg:
+ subdevice number
+
+ reads:
+ none
+
+ writes:
+ none
+
+ necessary locking:
+ - ioctl/rt lock (this type)
+ - lock while subdevice busy
+ - lock while subdevice being programmed
+
+*/
+int comedi_lock(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+ unsigned long flags;
+ int ret = 0;
+
+ if (subdevice >= dev->n_subdevices) {
+ return -EINVAL;
+ }
+ s = dev->subdevices + subdevice;
+
+ comedi_spin_lock_irqsave(&s->spin_lock, flags);
+
+ if (s->busy) {
+ ret = -EBUSY;
+ } else {
+ if (s->lock) {
+ ret = -EBUSY;
+ } else {
+ s->lock = d;
+ }
+ }
+
+ comedi_spin_unlock_irqrestore(&s->spin_lock, flags);
+
+ return ret;
+}
+
+/*
+ COMEDI_UNLOCK
+ unlock subdevice
+
+ arg:
+ subdevice number
+
+ reads:
+ none
+
+ writes:
+ none
+
+*/
+int comedi_unlock(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+ unsigned long flags;
+ comedi_async *async;
+ int ret;
+
+ if (subdevice >= dev->n_subdevices) {
+ return -EINVAL;
+ }
+ s = dev->subdevices + subdevice;
+
+ async = s->async;
+
+ comedi_spin_lock_irqsave(&s->spin_lock, flags);
+
+ if (s->busy) {
+ ret = -EBUSY;
+ } else if (s->lock && s->lock != (void *)d) {
+ ret = -EACCES;
+ } else {
+ s->lock = NULL;
+
+ if (async) {
+ async->cb_mask = 0;
+ async->cb_func = NULL;
+ async->cb_arg = NULL;
+ }
+
+ ret = 0;
+ }
+
+ comedi_spin_unlock_irqrestore(&s->spin_lock, flags);
+
+ return ret;
+}
+
+/*
+ COMEDI_CANCEL
+ cancel acquisition ioctl
+
+ arg:
+ subdevice number
+
+ reads:
+ nothing
+
+ writes:
+ nothing
+
+*/
+int comedi_cancel(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+ int ret = 0;
+
+ if (subdevice >= dev->n_subdevices) {
+ return -EINVAL;
+ }
+ s = dev->subdevices + subdevice;
+
+ if (s->lock && s->lock != d)
+ return -EACCES;
+
+#if 0
+ if (!s->busy)
+ return 0;
+
+ if (s->busy != d)
+ return -EBUSY;
+#endif
+
+ if (!s->cancel || !s->async)
+ return -EINVAL;
+
+ if ((ret = s->cancel(dev, s)))
+ return ret;
+
+#ifdef CONFIG_COMEDI_RT
+ if (comedi_get_subdevice_runflags(s) & SRF_RT) {
+ comedi_switch_to_non_rt(dev);
+ }
+#endif
+ comedi_set_subdevice_runflags(s, SRF_RUNNING | SRF_RT, 0);
+ s->async->inttrig = NULL;
+ s->busy = NULL;
+
+ return 0;
+}
+
+/*
+ registration of callback functions
+ */
+int comedi_register_callback(comedi_t * d, unsigned int subdevice,
+ unsigned int mask, int (*cb) (unsigned int, void *), void *arg)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+ comedi_async *async;
+
+ if (subdevice >= dev->n_subdevices) {
+ return -EINVAL;
+ }
+ s = dev->subdevices + subdevice;
+
+ async = s->async;
+ if (s->type == COMEDI_SUBD_UNUSED || !async)
+ return -EIO;
+
+ /* are we locked? (ioctl lock) */
+ if (s->lock && s->lock != d)
+ return -EACCES;
+
+ /* are we busy? */
+ if (s->busy)
+ return -EBUSY;
+
+ if (!mask) {
+ async->cb_mask = 0;
+ async->cb_func = NULL;
+ async->cb_arg = NULL;
+ } else {
+ async->cb_mask = mask;
+ async->cb_func = cb;
+ async->cb_arg = arg;
+ }
+
+ return 0;
+}
+
+int comedi_poll(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s = dev->subdevices;
+ comedi_async *async;
+
+ if (subdevice >= dev->n_subdevices) {
+ return -EINVAL;
+ }
+ s = dev->subdevices + subdevice;
+
+ async = s->async;
+ if (s->type == COMEDI_SUBD_UNUSED || !async)
+ return -EIO;
+
+ /* are we locked? (ioctl lock) */
+ if (s->lock && s->lock != d)
+ return -EACCES;
+
+ /* are we running? XXX wrong? */
+ if (!s->busy)
+ return -EIO;
+
+ return s->poll(dev, s);
+}
+
+/* WARNING: not portable */
+int comedi_map(comedi_t * d, unsigned int subdevice, void *ptr)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+
+ if (subdevice >= dev->n_subdevices) {
+ return -EINVAL;
+ }
+ s = dev->subdevices + subdevice;
+
+ if (!s->async)
+ return -EINVAL;
+
+ if (ptr) {
+ *((void **)ptr) = s->async->prealloc_buf;
+ }
+
+ /* XXX no reference counting */
+
+ return 0;
+}
+
+/* WARNING: not portable */
+int comedi_unmap(comedi_t * d, unsigned int subdevice)
+{
+ comedi_device *dev = (comedi_device *) d;
+ comedi_subdevice *s;
+
+ if (subdevice >= dev->n_subdevices) {
+ return -EINVAL;
+ }
+ s = dev->subdevices + subdevice;
+
+ if (!s->async)
+ return -EINVAL;
+
+ /* XXX no reference counting */
+
+ return 0;
+}
diff --git a/drivers/staging/comedi/kcomedilib/ksyms.c b/drivers/staging/comedi/kcomedilib/ksyms.c
new file mode 100644
index 000000000000..76b45063a9fc
--- /dev/null
+++ b/drivers/staging/comedi/kcomedilib/ksyms.c
@@ -0,0 +1,144 @@
+/*
+ comedi/kcomedilib/ksyms.c
+ a comedlib interface for kernel modules
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 1997-2001 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.
+
+*/
+
+#ifndef EXPORT_SYMTAB
+#define EXPORT_SYMTAB
+#endif
+
+#include "../comedi.h"
+#include "../comedilib.h"
+#include "../comedidev.h"
+
+#include <linux/module.h>
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fcntl.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+
+#if LINUX_VERSION_CODE >= 0x020200
+
+/* functions specific to kcomedilib */
+
+EXPORT_SYMBOL(comedi_register_callback);
+EXPORT_SYMBOL(comedi_get_krange);
+EXPORT_SYMBOL(comedi_get_buf_head_pos);
+EXPORT_SYMBOL(comedi_set_user_int_count);
+EXPORT_SYMBOL(comedi_map);
+EXPORT_SYMBOL(comedi_unmap);
+
+/* This list comes from user-space comedilib, to show which
+ * functions are not ported yet. */
+
+EXPORT_SYMBOL(comedi_open);
+EXPORT_SYMBOL(comedi_close);
+
+/* logging */
+EXPORT_SYMBOL(comedi_loglevel);
+EXPORT_SYMBOL(comedi_perror);
+EXPORT_SYMBOL(comedi_strerror);
+//EXPORT_SYMBOL(comedi_errno);
+EXPORT_SYMBOL(comedi_fileno);
+
+/* device queries */
+EXPORT_SYMBOL(comedi_get_n_subdevices);
+EXPORT_SYMBOL(comedi_get_version_code);
+EXPORT_SYMBOL(comedi_get_driver_name);
+EXPORT_SYMBOL(comedi_get_board_name);
+
+/* subdevice queries */
+EXPORT_SYMBOL(comedi_get_subdevice_type);
+EXPORT_SYMBOL(comedi_find_subdevice_by_type);
+EXPORT_SYMBOL(comedi_get_subdevice_flags);
+EXPORT_SYMBOL(comedi_get_n_channels);
+//EXPORT_SYMBOL(comedi_range_is_chan_specific);
+//EXPORT_SYMBOL(comedi_maxdata_is_chan_specific);
+
+/* channel queries */
+EXPORT_SYMBOL(comedi_get_maxdata);
+#ifdef KCOMEDILIB_DEPRECATED
+EXPORT_SYMBOL(comedi_get_rangetype);
+#endif
+EXPORT_SYMBOL(comedi_get_n_ranges);
+//EXPORT_SYMBOL(comedi_find_range);
+
+/* buffer queries */
+EXPORT_SYMBOL(comedi_get_buffer_size);
+//EXPORT_SYMBOL(comedi_get_max_buffer_size);
+//EXPORT_SYMBOL(comedi_set_buffer_size);
+EXPORT_SYMBOL(comedi_get_buffer_contents);
+EXPORT_SYMBOL(comedi_get_buffer_offset);
+
+/* low-level stuff */
+//EXPORT_SYMBOL(comedi_trigger);
+//EXPORT_SYMBOL(comedi_do_insnlist);
+EXPORT_SYMBOL(comedi_do_insn);
+EXPORT_SYMBOL(comedi_lock);
+EXPORT_SYMBOL(comedi_unlock);
+
+/* physical units */
+//EXPORT_SYMBOL(comedi_to_phys);
+//EXPORT_SYMBOL(comedi_from_phys);
+
+/* synchronous stuff */
+EXPORT_SYMBOL(comedi_data_read);
+EXPORT_SYMBOL(comedi_data_read_hint);
+EXPORT_SYMBOL(comedi_data_read_delayed);
+EXPORT_SYMBOL(comedi_data_write);
+EXPORT_SYMBOL(comedi_dio_config);
+EXPORT_SYMBOL(comedi_dio_read);
+EXPORT_SYMBOL(comedi_dio_write);
+EXPORT_SYMBOL(comedi_dio_bitfield);
+
+/* slowly varying stuff */
+//EXPORT_SYMBOL(comedi_sv_init);
+//EXPORT_SYMBOL(comedi_sv_update);
+//EXPORT_SYMBOL(comedi_sv_measure);
+
+/* commands */
+//EXPORT_SYMBOL(comedi_get_cmd_src_mask);
+//EXPORT_SYMBOL(comedi_get_cmd_generic_timed);
+EXPORT_SYMBOL(comedi_cancel);
+EXPORT_SYMBOL(comedi_command);
+EXPORT_SYMBOL(comedi_command_test);
+EXPORT_SYMBOL(comedi_poll);
+
+/* buffer configuration */
+EXPORT_SYMBOL(comedi_mark_buffer_read);
+EXPORT_SYMBOL(comedi_mark_buffer_written);
+
+//EXPORT_SYMBOL(comedi_get_range);
+EXPORT_SYMBOL(comedi_get_len_chanlist);
+
+/* deprecated */
+//EXPORT_SYMBOL(comedi_get_timer);
+//EXPORT_SYMBOL(comedi_timed_1chan);
+
+/* alpha */
+//EXPORT_SYMBOL(comedi_set_global_oor_behavior);
+
+#endif
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.