2008-11-05 04:29:31 +00:00
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/*
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include/linux/comedidev.h
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header file for kernel-only structures, variables, and constants
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _COMEDIDEV_H
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#define _COMEDIDEV_H
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/kdev_t.h>
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#include <linux/slab.h>
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2009-06-05 18:10:42 +00:00
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#include <linux/delay.h>
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2008-11-05 04:29:31 +00:00
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#include <linux/errno.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/wait.h>
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/vmalloc.h>
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#include <linux/dma-mapping.h>
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2008-11-14 00:36:22 +00:00
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#include <linux/uaccess.h>
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#include <linux/io.h>
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2009-06-19 18:04:32 +00:00
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#include <linux/timer.h>
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2012-05-22 00:12:12 +00:00
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#include <linux/pci.h>
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2012-10-27 20:44:16 +00:00
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#include <linux/usb.h>
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2008-11-05 04:29:31 +00:00
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#include "comedi.h"
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2008-11-14 00:36:22 +00:00
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#define DPRINTK(format, args...) do { \
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if (comedi_debug) \
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2012-08-16 13:38:05 +00:00
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pr_debug("comedi: " format, ## args); \
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2008-11-14 00:36:22 +00:00
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} while (0)
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2008-11-05 04:29:31 +00:00
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2008-11-14 00:36:22 +00:00
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#define COMEDI_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
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2009-09-22 23:13:04 +00:00
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#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION, \
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COMEDI_MINORVERSION, COMEDI_MICROVERSION)
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2008-11-05 04:29:31 +00:00
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#define COMEDI_RELEASE VERSION
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2012-10-24 23:29:32 +00:00
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/*
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* PCI Vendor IDs not in <linux/pci_ids.h>
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*/
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2012-10-25 01:12:50 +00:00
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#define PCI_VENDOR_ID_KOLTER 0x1001
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2008-11-05 04:29:31 +00:00
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#define PCI_VENDOR_ID_ICP 0x104c
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2012-10-25 01:14:00 +00:00
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#define PCI_VENDOR_ID_AMCC 0x10e8
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2012-10-25 01:12:34 +00:00
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#define PCI_VENDOR_ID_DT 0x1116
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2012-10-25 01:13:12 +00:00
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#define PCI_VENDOR_ID_IOTECH 0x1616
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2008-11-05 04:29:31 +00:00
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#define PCI_VENDOR_ID_CONTEC 0x1221
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2012-10-24 23:29:32 +00:00
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#define PCI_VENDOR_ID_CB 0x1307 /* Measurement Computing */
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2012-10-25 01:11:01 +00:00
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#define PCI_VENDOR_ID_ADVANTECH 0x13fe
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2012-10-25 01:11:21 +00:00
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#define PCI_VENDOR_ID_MEILHAUS 0x1402
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2012-10-25 01:13:43 +00:00
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#define PCI_VENDOR_ID_RTD 0x1435
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2012-10-24 23:29:32 +00:00
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#define PCI_VENDOR_ID_ADLINK 0x144a
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2012-10-25 01:14:40 +00:00
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#define PCI_VENDOR_ID_AMPLICON 0x14dc
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2008-11-05 04:29:31 +00:00
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#define COMEDI_NUM_MINORS 0x100
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#define COMEDI_NUM_BOARD_MINORS 0x30
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#define COMEDI_FIRST_SUBDEVICE_MINOR COMEDI_NUM_BOARD_MINORS
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2009-03-17 02:05:14 +00:00
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struct comedi_subdevice {
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2009-03-17 02:05:08 +00:00
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struct comedi_device *device;
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2008-11-05 04:29:31 +00:00
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int type;
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int n_chan;
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2010-04-30 22:26:54 +00:00
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int subdev_flags;
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2008-11-05 04:29:31 +00:00
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int len_chanlist; /* maximum length of channel/gain list */
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void *private;
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2009-03-17 02:05:20 +00:00
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struct comedi_async *async;
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2008-11-05 04:29:31 +00:00
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void *lock;
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void *busy;
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unsigned runflags;
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spinlock_t spin_lock;
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2012-06-18 21:45:42 +00:00
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unsigned int io_bits;
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2008-11-05 04:29:31 +00:00
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2009-03-17 02:05:02 +00:00
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unsigned int maxdata; /* if maxdata==0, use list */
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const unsigned int *maxdata_list; /* list is channel specific */
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2008-11-05 04:29:31 +00:00
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unsigned int flags;
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const unsigned int *flaglist;
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unsigned int settling_time_0;
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2009-03-17 02:05:31 +00:00
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const struct comedi_lrange *range_table;
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const struct comedi_lrange *const *range_table_list;
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2008-11-05 04:29:31 +00:00
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unsigned int *chanlist; /* driver-owned chanlist (not used) */
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2009-06-08 15:34:41 +00:00
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int (*insn_read) (struct comedi_device *, struct comedi_subdevice *,
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struct comedi_insn *, unsigned int *);
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int (*insn_write) (struct comedi_device *, struct comedi_subdevice *,
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struct comedi_insn *, unsigned int *);
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int (*insn_bits) (struct comedi_device *, struct comedi_subdevice *,
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struct comedi_insn *, unsigned int *);
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int (*insn_config) (struct comedi_device *, struct comedi_subdevice *,
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struct comedi_insn *, unsigned int *);
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2008-11-05 04:29:31 +00:00
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2009-03-17 02:05:14 +00:00
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int (*do_cmd) (struct comedi_device *, struct comedi_subdevice *);
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2009-06-08 15:34:41 +00:00
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int (*do_cmdtest) (struct comedi_device *, struct comedi_subdevice *,
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struct comedi_cmd *);
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2009-03-17 02:05:14 +00:00
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int (*poll) (struct comedi_device *, struct comedi_subdevice *);
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int (*cancel) (struct comedi_device *, struct comedi_subdevice *);
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2009-09-22 23:13:04 +00:00
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/* int (*do_lock)(struct comedi_device *, struct comedi_subdevice *); */
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/* int (*do_unlock)(struct comedi_device *, \
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struct comedi_subdevice *); */
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2008-11-05 04:29:31 +00:00
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/* called when the buffer changes */
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2009-09-22 23:13:04 +00:00
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int (*buf_change) (struct comedi_device *dev,
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struct comedi_subdevice *s, unsigned long new_size);
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2008-11-05 04:29:31 +00:00
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2009-09-22 23:13:04 +00:00
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void (*munge) (struct comedi_device *dev, struct comedi_subdevice *s,
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2009-06-08 15:34:41 +00:00
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void *data, unsigned int num_bytes,
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unsigned int start_chan_index);
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2008-11-05 04:29:31 +00:00
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enum dma_data_direction async_dma_dir;
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unsigned int state;
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2009-03-17 02:05:36 +00:00
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struct device *class_dev;
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2008-11-05 04:29:31 +00:00
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int minor;
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};
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struct comedi_buf_page {
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void *virt_addr;
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dma_addr_t dma_addr;
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};
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2009-03-17 02:05:20 +00:00
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struct comedi_async {
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2009-03-17 02:05:14 +00:00
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struct comedi_subdevice *subdevice;
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2008-11-05 04:29:31 +00:00
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void *prealloc_buf; /* pre-allocated buffer */
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unsigned int prealloc_bufsz; /* buffer size, in bytes */
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2009-09-22 23:13:04 +00:00
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/* virtual and dma address of each page */
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struct comedi_buf_page *buf_page_list;
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2008-11-05 04:29:31 +00:00
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unsigned n_buf_pages; /* num elements in buf_page_list */
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unsigned int max_bufsize; /* maximum buffer size, bytes */
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2009-09-22 23:13:04 +00:00
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/* current number of mmaps of prealloc_buf */
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unsigned int mmap_count;
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/* byte count for writer (write completed) */
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unsigned int buf_write_count;
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/* byte count for writer (allocated for writing) */
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unsigned int buf_write_alloc_count;
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/* byte count for reader (read completed) */
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unsigned int buf_read_count;
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/* byte count for reader (allocated for reading) */
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unsigned int buf_read_alloc_count;
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2008-11-05 04:29:31 +00:00
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unsigned int buf_write_ptr; /* buffer marker for writer */
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unsigned int buf_read_ptr; /* buffer marker for reader */
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unsigned int cur_chan; /* useless channel marker for interrupt */
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/* number of bytes that have been received for current scan */
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unsigned int scan_progress;
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/* keeps track of where we are in chanlist as for munging */
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unsigned int munge_chan;
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/* number of bytes that have been munged */
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unsigned int munge_count;
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/* buffer marker for munging */
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unsigned int munge_ptr;
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unsigned int events; /* events that have occurred */
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2009-03-17 02:05:47 +00:00
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struct comedi_cmd cmd;
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2008-11-05 04:29:31 +00:00
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wait_queue_head_t wait_head;
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2008-11-14 00:36:22 +00:00
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/* callback stuff */
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2008-11-05 04:29:31 +00:00
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unsigned int cb_mask;
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int (*cb_func) (unsigned int flags, void *);
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void *cb_arg;
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2009-09-22 23:13:04 +00:00
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int (*inttrig) (struct comedi_device *dev, struct comedi_subdevice *s,
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2008-11-14 00:36:22 +00:00
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unsigned int x);
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2008-11-05 04:29:31 +00:00
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};
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2009-03-17 02:05:25 +00:00
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struct comedi_driver {
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struct comedi_driver *next;
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2008-11-05 04:29:31 +00:00
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const char *driver_name;
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struct module *module;
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2009-03-17 02:06:20 +00:00
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int (*attach) (struct comedi_device *, struct comedi_devconfig *);
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2012-05-18 00:11:14 +00:00
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void (*detach) (struct comedi_device *);
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staging: comedi: add bus-type-specific attach hooks for PCI and USB
The Comedi auto-configuration mechanism used to bind hardware devices to
comedi devices automatically is pretty kludgy. It fakes a "manual"
configuration of the comedi device as though the COMEDI_DEVCONFIG ioctl
(or the 'comedi_config' utility) were used. In particular, the
low-level comedi driver's '->attach()' routine is called with a pointer
to the struct comedi_device being attached and a pointer to a 'struct
devconfig' containing a device name string and a few integer options to
help the attach routine locate the device being attached. In the case
of PCI devices, these integer options are the PCI bus and slot numbers.
In the case of USB devices, there are no integer options and it relies
more on pot luck to attach the correct device.
This patch adds a couple of bus-type-specific attach routine hooks to
the struct comedi_driver, which a low-level driver can optionally fill
in if it supports auto-configuration.
A low-level driver that supports auto-configuration of {PCI,USB} devices
calls the existing comedi_{pci,usb}_auto_config() when it wishes to
auto-configure a freshly probed device (maybe after loading firmware).
This will call the new '->attach_{pci,usb}()' hook if the driver has
defined it, otherwise it will fall back to calling the '->attach()' hook
as before. The '->attach_{pci,usb}()' hook gets a pointer to the struct
comedi_device and a pointer to the struct {pci_dev,usb_interface} and
can figure out the {PCI,USB} device details for itself.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-30 16:15:01 +00:00
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int (*attach_pci) (struct comedi_device *, struct pci_dev *);
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int (*attach_usb) (struct comedi_device *, struct usb_interface *);
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2012-10-27 20:44:14 +00:00
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int (*auto_attach) (struct comedi_device *, unsigned long);
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2008-11-05 04:29:31 +00:00
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/* number of elements in board_name and board_id arrays */
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unsigned int num_names;
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const char *const *board_name;
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/* offset in bytes from one board name pointer to the next */
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int offset;
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};
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2009-03-17 02:05:08 +00:00
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struct comedi_device {
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2008-11-05 04:29:31 +00:00
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int use_count;
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2009-03-17 02:05:25 +00:00
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struct comedi_driver *driver;
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2008-11-05 04:29:31 +00:00
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void *private;
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2009-03-17 02:05:36 +00:00
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struct device *class_dev;
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2008-11-05 04:29:31 +00:00
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int minor;
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2008-11-14 00:36:22 +00:00
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/* hw_dev is passed to dma_alloc_coherent when allocating async buffers
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* for subdevices that have async_dma_dir set to something other than
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* DMA_NONE */
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2008-11-05 04:29:31 +00:00
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struct device *hw_dev;
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const char *board_name;
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const void *board_ptr;
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int attached;
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spinlock_t spinlock;
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struct mutex mutex;
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int in_request_module;
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int n_subdevices;
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2009-03-17 02:05:14 +00:00
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struct comedi_subdevice *subdevices;
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2008-11-05 04:29:31 +00:00
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/* dumb */
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unsigned long iobase;
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unsigned int irq;
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2009-03-17 02:05:14 +00:00
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struct comedi_subdevice *read_subdev;
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struct comedi_subdevice *write_subdev;
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2008-11-05 04:29:31 +00:00
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struct fasync_struct *async_queue;
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2010-05-19 13:10:00 +00:00
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int (*open) (struct comedi_device *dev);
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2009-09-22 23:13:04 +00:00
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void (*close) (struct comedi_device *dev);
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2008-11-05 04:29:31 +00:00
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};
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2012-04-27 21:10:15 +00:00
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static inline const void *comedi_board(struct comedi_device *dev)
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{
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return dev->board_ptr;
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}
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2008-11-05 04:29:31 +00:00
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struct comedi_device_file_info {
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2009-03-17 02:05:08 +00:00
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struct comedi_device *device;
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2009-03-17 02:05:14 +00:00
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struct comedi_subdevice *read_subdevice;
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struct comedi_subdevice *write_subdevice;
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2012-03-30 16:14:58 +00:00
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struct device *hardware_device;
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2008-11-05 04:29:31 +00:00
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};
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#ifdef CONFIG_COMEDI_DEBUG
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extern int comedi_debug;
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#else
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2008-11-14 00:36:22 +00:00
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static const int comedi_debug;
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2008-11-05 04:29:31 +00:00
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#endif
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/*
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* function prototypes
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*/
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2009-03-17 02:05:14 +00:00
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void comedi_event(struct comedi_device *dev, struct comedi_subdevice *s);
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2009-03-17 02:05:08 +00:00
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void comedi_error(const struct comedi_device *dev, const char *s);
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2008-11-05 04:29:31 +00:00
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/* we can expand the number of bits used to encode devices/subdevices into
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the minor number soon, after more distros support > 8 bit minor numbers
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(like after Debian Etch gets released) */
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enum comedi_minor_bits {
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|
|
|
COMEDI_DEVICE_MINOR_MASK = 0xf,
|
|
|
|
COMEDI_SUBDEVICE_MINOR_MASK = 0xf0
|
|
|
|
};
|
|
|
|
static const unsigned COMEDI_SUBDEVICE_MINOR_SHIFT = 4;
|
|
|
|
static const unsigned COMEDI_SUBDEVICE_MINOR_OFFSET = 1;
|
|
|
|
|
2008-11-14 00:36:22 +00:00
|
|
|
struct comedi_device_file_info *comedi_get_device_file_info(unsigned minor);
|
2008-11-05 04:29:31 +00:00
|
|
|
|
2009-09-22 23:13:04 +00:00
|
|
|
static inline struct comedi_subdevice *comedi_get_read_subdevice(
|
|
|
|
const struct comedi_device_file_info *info)
|
2008-11-05 04:29:31 +00:00
|
|
|
{
|
2008-11-14 00:36:22 +00:00
|
|
|
if (info->read_subdevice)
|
|
|
|
return info->read_subdevice;
|
|
|
|
if (info->device == NULL)
|
|
|
|
return NULL;
|
2008-11-05 04:29:31 +00:00
|
|
|
return info->device->read_subdev;
|
|
|
|
}
|
|
|
|
|
2009-09-22 23:13:04 +00:00
|
|
|
static inline struct comedi_subdevice *comedi_get_write_subdevice(
|
|
|
|
const struct comedi_device_file_info *info)
|
2008-11-05 04:29:31 +00:00
|
|
|
{
|
2008-11-14 00:36:22 +00:00
|
|
|
if (info->write_subdevice)
|
|
|
|
return info->write_subdevice;
|
|
|
|
if (info->device == NULL)
|
|
|
|
return NULL;
|
2008-11-05 04:29:31 +00:00
|
|
|
return info->device->write_subdev;
|
|
|
|
}
|
|
|
|
|
2012-06-12 18:57:27 +00:00
|
|
|
int comedi_alloc_subdevices(struct comedi_device *, int);
|
2012-06-12 00:45:15 +00:00
|
|
|
|
2009-03-17 02:05:08 +00:00
|
|
|
void comedi_device_detach(struct comedi_device *dev);
|
2009-06-08 15:34:41 +00:00
|
|
|
int comedi_device_attach(struct comedi_device *dev,
|
|
|
|
struct comedi_devconfig *it);
|
2009-03-17 02:05:25 +00:00
|
|
|
int comedi_driver_register(struct comedi_driver *);
|
|
|
|
int comedi_driver_unregister(struct comedi_driver *);
|
2008-11-05 04:29:31 +00:00
|
|
|
|
2012-05-02 00:20:04 +00:00
|
|
|
/**
|
|
|
|
* module_comedi_driver() - Helper macro for registering a comedi driver
|
|
|
|
* @__comedi_driver: comedi_driver struct
|
|
|
|
*
|
|
|
|
* Helper macro for comedi drivers which do not do anything special in module
|
|
|
|
* init/exit. This eliminates a lot of boilerplate. Each module may only use
|
|
|
|
* this macro once, and calling it replaces module_init() and module_exit().
|
|
|
|
*/
|
|
|
|
#define module_comedi_driver(__comedi_driver) \
|
|
|
|
module_driver(__comedi_driver, comedi_driver_register, \
|
|
|
|
comedi_driver_unregister)
|
|
|
|
|
2012-05-22 00:12:12 +00:00
|
|
|
int comedi_pci_enable(struct pci_dev *, const char *);
|
|
|
|
void comedi_pci_disable(struct pci_dev *);
|
2012-05-11 23:15:39 +00:00
|
|
|
|
|
|
|
int comedi_pci_driver_register(struct comedi_driver *, struct pci_driver *);
|
|
|
|
void comedi_pci_driver_unregister(struct comedi_driver *, struct pci_driver *);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* module_comedi_pci_driver() - Helper macro for registering a comedi PCI driver
|
|
|
|
* @__comedi_driver: comedi_driver struct
|
|
|
|
* @__pci_driver: pci_driver struct
|
|
|
|
*
|
|
|
|
* Helper macro for comedi PCI drivers which do not do anything special
|
|
|
|
* in module init/exit. This eliminates a lot of boilerplate. Each
|
|
|
|
* module may only use this macro once, and calling it replaces
|
|
|
|
* module_init() and module_exit()
|
|
|
|
*/
|
|
|
|
#define module_comedi_pci_driver(__comedi_driver, __pci_driver) \
|
|
|
|
module_driver(__comedi_driver, comedi_pci_driver_register, \
|
|
|
|
comedi_pci_driver_unregister, &(__pci_driver))
|
|
|
|
|
2012-05-17 01:18:52 +00:00
|
|
|
struct usb_driver;
|
|
|
|
|
|
|
|
int comedi_usb_driver_register(struct comedi_driver *, struct usb_driver *);
|
|
|
|
void comedi_usb_driver_unregister(struct comedi_driver *, struct usb_driver *);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* module_comedi_usb_driver() - Helper macro for registering a comedi USB driver
|
|
|
|
* @__comedi_driver: comedi_driver struct
|
|
|
|
* @__usb_driver: usb_driver struct
|
|
|
|
*
|
|
|
|
* Helper macro for comedi USB drivers which do not do anything special
|
|
|
|
* in module init/exit. This eliminates a lot of boilerplate. Each
|
|
|
|
* module may only use this macro once, and calling it replaces
|
|
|
|
* module_init() and module_exit()
|
|
|
|
*/
|
|
|
|
#define module_comedi_usb_driver(__comedi_driver, __usb_driver) \
|
|
|
|
module_driver(__comedi_driver, comedi_usb_driver_register, \
|
|
|
|
comedi_usb_driver_unregister, &(__usb_driver))
|
|
|
|
|
2008-11-05 04:29:31 +00:00
|
|
|
void init_polling(void);
|
|
|
|
void cleanup_polling(void);
|
2009-03-17 02:05:08 +00:00
|
|
|
void start_polling(struct comedi_device *);
|
|
|
|
void stop_polling(struct comedi_device *);
|
2008-11-05 04:29:31 +00:00
|
|
|
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
|
|
void comedi_proc_init(void);
|
|
|
|
void comedi_proc_cleanup(void);
|
|
|
|
#else
|
|
|
|
static inline void comedi_proc_init(void)
|
|
|
|
{
|
|
|
|
}
|
2009-06-08 15:34:41 +00:00
|
|
|
|
2008-11-05 04:29:31 +00:00
|
|
|
static inline void comedi_proc_cleanup(void)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* subdevice runflags */
|
|
|
|
enum subdevice_runflags {
|
|
|
|
SRF_USER = 0x00000001,
|
|
|
|
SRF_RT = 0x00000002,
|
2008-11-14 00:36:22 +00:00
|
|
|
/* indicates an COMEDI_CB_ERROR event has occurred since the last
|
|
|
|
* command was started */
|
2008-11-05 04:29:31 +00:00
|
|
|
SRF_ERROR = 0x00000004,
|
|
|
|
SRF_RUNNING = 0x08000000
|
|
|
|
};
|
|
|
|
|
2010-05-06 09:49:37 +00:00
|
|
|
int comedi_check_chanlist(struct comedi_subdevice *s,
|
|
|
|
int n,
|
|
|
|
unsigned int *chanlist);
|
2009-03-17 02:05:14 +00:00
|
|
|
unsigned comedi_get_subdevice_runflags(struct comedi_subdevice *s);
|
2008-11-05 04:29:31 +00:00
|
|
|
|
|
|
|
/* range stuff */
|
|
|
|
|
2008-11-14 00:36:22 +00:00
|
|
|
#define RANGE(a, b) {(a)*1e6, (b)*1e6, 0}
|
|
|
|
#define RANGE_ext(a, b) {(a)*1e6, (b)*1e6, RF_EXTERNAL}
|
|
|
|
#define RANGE_mA(a, b) {(a)*1e6, (b)*1e6, UNIT_mA}
|
2010-04-30 22:26:54 +00:00
|
|
|
#define RANGE_unitless(a, b) {(a)*1e6, (b)*1e6, 0}
|
2008-11-14 00:36:22 +00:00
|
|
|
#define BIP_RANGE(a) {-(a)*1e6, (a)*1e6, 0}
|
|
|
|
#define UNI_RANGE(a) {0, (a)*1e6, 0}
|
2008-11-05 04:29:31 +00:00
|
|
|
|
2009-03-17 02:05:31 +00:00
|
|
|
extern const struct comedi_lrange range_bipolar10;
|
|
|
|
extern const struct comedi_lrange range_bipolar5;
|
|
|
|
extern const struct comedi_lrange range_bipolar2_5;
|
|
|
|
extern const struct comedi_lrange range_unipolar10;
|
|
|
|
extern const struct comedi_lrange range_unipolar5;
|
|
|
|
extern const struct comedi_lrange range_unknown;
|
2008-11-05 04:29:31 +00:00
|
|
|
|
|
|
|
#define range_digital range_unipolar5
|
|
|
|
|
|
|
|
#if __GNUC__ >= 3
|
|
|
|
#define GCC_ZERO_LENGTH_ARRAY
|
|
|
|
#else
|
|
|
|
#define GCC_ZERO_LENGTH_ARRAY 0
|
|
|
|
#endif
|
|
|
|
|
2009-03-17 02:05:31 +00:00
|
|
|
struct comedi_lrange {
|
2008-11-05 04:29:31 +00:00
|
|
|
int length;
|
2009-03-17 02:06:31 +00:00
|
|
|
struct comedi_krange range[GCC_ZERO_LENGTH_ARRAY];
|
2008-11-05 04:29:31 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/* some silly little inline functions */
|
|
|
|
|
2009-03-17 02:05:14 +00:00
|
|
|
static inline unsigned int bytes_per_sample(const struct comedi_subdevice *subd)
|
2008-11-05 04:29:31 +00:00
|
|
|
{
|
|
|
|
if (subd->subdev_flags & SDF_LSAMPL)
|
2009-03-17 02:05:02 +00:00
|
|
|
return sizeof(unsigned int);
|
2008-11-05 04:29:31 +00:00
|
|
|
else
|
2009-03-17 02:05:02 +00:00
|
|
|
return sizeof(short);
|
2008-11-05 04:29:31 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* must be used in attach to set dev->hw_dev if you wish to dma directly
|
|
|
|
into comedi's buffer */
|
2009-06-08 15:34:41 +00:00
|
|
|
static inline void comedi_set_hw_dev(struct comedi_device *dev,
|
|
|
|
struct device *hw_dev)
|
2008-11-05 04:29:31 +00:00
|
|
|
{
|
2012-10-15 12:07:31 +00:00
|
|
|
if (dev->hw_dev == hw_dev)
|
|
|
|
return;
|
2008-11-14 00:36:22 +00:00
|
|
|
if (dev->hw_dev)
|
2008-11-05 04:29:31 +00:00
|
|
|
put_device(dev->hw_dev);
|
|
|
|
dev->hw_dev = hw_dev;
|
|
|
|
if (dev->hw_dev) {
|
|
|
|
dev->hw_dev = get_device(dev->hw_dev);
|
|
|
|
BUG_ON(dev->hw_dev == NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-07-19 17:39:33 +00:00
|
|
|
static inline struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev)
|
|
|
|
{
|
|
|
|
return dev->hw_dev ? to_pci_dev(dev->hw_dev) : NULL;
|
|
|
|
}
|
|
|
|
|
2012-10-27 20:44:16 +00:00
|
|
|
static inline struct usb_interface *
|
|
|
|
comedi_to_usb_interface(struct comedi_device *dev)
|
|
|
|
{
|
|
|
|
return dev->hw_dev ? to_usb_interface(dev->hw_dev) : NULL;
|
|
|
|
}
|
|
|
|
|
2009-03-17 02:05:20 +00:00
|
|
|
int comedi_buf_put(struct comedi_async *async, short x);
|
|
|
|
int comedi_buf_get(struct comedi_async *async, short *x);
|
2008-11-05 04:29:31 +00:00
|
|
|
|
2009-03-17 02:05:20 +00:00
|
|
|
unsigned int comedi_buf_write_n_available(struct comedi_async *async);
|
2009-06-08 15:34:41 +00:00
|
|
|
unsigned int comedi_buf_write_alloc(struct comedi_async *async,
|
|
|
|
unsigned int nbytes);
|
2009-03-17 02:05:20 +00:00
|
|
|
unsigned int comedi_buf_write_alloc_strict(struct comedi_async *async,
|
2009-06-08 15:34:41 +00:00
|
|
|
unsigned int nbytes);
|
2009-03-17 02:05:20 +00:00
|
|
|
unsigned comedi_buf_write_free(struct comedi_async *async, unsigned int nbytes);
|
|
|
|
unsigned comedi_buf_read_alloc(struct comedi_async *async, unsigned nbytes);
|
|
|
|
unsigned comedi_buf_read_free(struct comedi_async *async, unsigned int nbytes);
|
|
|
|
unsigned int comedi_buf_read_n_available(struct comedi_async *async);
|
|
|
|
void comedi_buf_memcpy_to(struct comedi_async *async, unsigned int offset,
|
2009-06-08 15:34:41 +00:00
|
|
|
const void *source, unsigned int num_bytes);
|
2009-03-17 02:05:20 +00:00
|
|
|
void comedi_buf_memcpy_from(struct comedi_async *async, unsigned int offset,
|
2009-06-08 15:34:41 +00:00
|
|
|
void *destination, unsigned int num_bytes);
|
2009-03-17 02:05:20 +00:00
|
|
|
static inline unsigned comedi_buf_write_n_allocated(struct comedi_async *async)
|
2008-11-05 04:29:31 +00:00
|
|
|
{
|
|
|
|
return async->buf_write_alloc_count - async->buf_write_count;
|
|
|
|
}
|
2009-06-08 15:34:41 +00:00
|
|
|
|
2009-03-17 02:05:20 +00:00
|
|
|
static inline unsigned comedi_buf_read_n_allocated(struct comedi_async *async)
|
2008-11-05 04:29:31 +00:00
|
|
|
{
|
|
|
|
return async->buf_read_alloc_count - async->buf_read_count;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void *comedi_aux_data(int options[], int n)
|
|
|
|
{
|
|
|
|
unsigned long address;
|
|
|
|
unsigned long addressLow;
|
|
|
|
int bit_shift;
|
|
|
|
if (sizeof(int) >= sizeof(void *))
|
|
|
|
address = options[COMEDI_DEVCONF_AUX_DATA_LO];
|
|
|
|
else {
|
|
|
|
address = options[COMEDI_DEVCONF_AUX_DATA_HI];
|
|
|
|
bit_shift = sizeof(int) * 8;
|
|
|
|
address <<= bit_shift;
|
|
|
|
addressLow = options[COMEDI_DEVCONF_AUX_DATA_LO];
|
|
|
|
addressLow &= (1UL << bit_shift) - 1;
|
|
|
|
address |= addressLow;
|
|
|
|
}
|
|
|
|
if (n >= 1)
|
|
|
|
address += options[COMEDI_DEVCONF_AUX_DATA0_LENGTH];
|
|
|
|
if (n >= 2)
|
|
|
|
address += options[COMEDI_DEVCONF_AUX_DATA1_LENGTH];
|
|
|
|
if (n >= 3)
|
|
|
|
address += options[COMEDI_DEVCONF_AUX_DATA2_LENGTH];
|
|
|
|
BUG_ON(n > 3);
|
|
|
|
return (void *)address;
|
|
|
|
}
|
|
|
|
|
2009-06-08 15:34:41 +00:00
|
|
|
int comedi_alloc_subdevice_minor(struct comedi_device *dev,
|
|
|
|
struct comedi_subdevice *s);
|
2009-03-17 02:05:14 +00:00
|
|
|
void comedi_free_subdevice_minor(struct comedi_subdevice *s);
|
2012-10-27 20:44:14 +00:00
|
|
|
int comedi_auto_config(struct device *hardware_device,
|
|
|
|
struct comedi_driver *driver, unsigned long context);
|
|
|
|
void comedi_auto_unconfig(struct device *hardware_device);
|
2012-03-30 16:14:56 +00:00
|
|
|
int comedi_pci_auto_config(struct pci_dev *pcidev,
|
|
|
|
struct comedi_driver *driver);
|
2008-11-05 04:29:31 +00:00
|
|
|
void comedi_pci_auto_unconfig(struct pci_dev *pcidev);
|
2012-03-30 16:14:59 +00:00
|
|
|
int comedi_usb_auto_config(struct usb_interface *intf,
|
2012-03-30 16:14:56 +00:00
|
|
|
struct comedi_driver *driver);
|
2012-03-30 16:14:59 +00:00
|
|
|
void comedi_usb_auto_unconfig(struct usb_interface *intf);
|
2008-11-05 04:29:31 +00:00
|
|
|
|
|
|
|
#endif /* _COMEDIDEV_H */
|