[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / comedi / comedidev.h

/*
    include/linux/comedidev.h
    header file for kernel-only structures, variables, and constants

    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.

*/

#ifndef _COMEDIDEV_H
#define _COMEDIDEV_H

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/kdev_t.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/wait.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <asm/uaccess.h>
#include <asm/io.h>

#include "comedi.h"

#define DPRINTK(format, args...)	do{				\
	if(comedi_debug)printk("comedi: " format , ## args );		\
} while(0)

#define COMEDI_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION,COMEDI_MINORVERSION,COMEDI_MICROVERSION)
#define COMEDI_RELEASE VERSION

#define COMEDI_INITCLEANUP_NOMODULE(x)					\
	static int __init x ## _init_module(void)			\
		{return comedi_driver_register(&(x));}			\
	static void __exit x ## _cleanup_module(void)			\
		{comedi_driver_unregister(&(x));} 			\
	module_init(x ## _init_module);					\
	module_exit(x ## _cleanup_module);					\

#define COMEDI_MODULE_MACROS						\
	MODULE_AUTHOR("Comedi http://www.comedi.org");		\
	MODULE_DESCRIPTION("Comedi low-level driver");			\
	MODULE_LICENSE("GPL");						\

#define COMEDI_INITCLEANUP(x)						\
	COMEDI_MODULE_MACROS		\
	COMEDI_INITCLEANUP_NOMODULE(x)

#define COMEDI_PCI_INITCLEANUP_NOMODULE(comedi_driver, pci_id_table) \
	static int __devinit comedi_driver ## _pci_probe(struct pci_dev *dev, \
		const struct pci_device_id *ent) \
	{ \
		return comedi_pci_auto_config(dev, comedi_driver.driver_name); \
	} \
	static void __devexit comedi_driver ## _pci_remove(struct pci_dev *dev) \
	{ \
		comedi_pci_auto_unconfig(dev); \
	} \
	static struct pci_driver comedi_driver ## _pci_driver = \
	{ \
		.id_table = pci_id_table, \
		.probe = & comedi_driver ## _pci_probe, \
		.remove = __devexit_p(& comedi_driver ## _pci_remove) \
	}; \
	static int __init comedi_driver ## _init_module(void) \
	{ \
		int retval; \
		retval = comedi_driver_register(& comedi_driver); \
		if(retval < 0) return retval; \
		comedi_driver ## _pci_driver.name = (char*)comedi_driver.driver_name; \
		return pci_register_driver(& comedi_driver ## _pci_driver); \
	} \
	static void __exit comedi_driver ## _cleanup_module(void) \
	{ \
		pci_unregister_driver(& comedi_driver ## _pci_driver); \
		comedi_driver_unregister(& comedi_driver); \
	} \
	module_init(comedi_driver ## _init_module); \
	module_exit(comedi_driver ## _cleanup_module);

#define COMEDI_PCI_INITCLEANUP(comedi_driver, pci_id_table) \
	COMEDI_MODULE_MACROS \
	COMEDI_PCI_INITCLEANUP_NOMODULE(comedi_driver, pci_id_table)

#define PCI_VENDOR_ID_INOVA		0x104c
#define PCI_VENDOR_ID_NATINST		0x1093
#define PCI_VENDOR_ID_DATX		0x1116
#define PCI_VENDOR_ID_COMPUTERBOARDS	0x1307
#define PCI_VENDOR_ID_ADVANTECH		0x13fe
#define PCI_VENDOR_ID_RTD		0x1435
#define PCI_VENDOR_ID_AMPLICON		0x14dc
#define PCI_VENDOR_ID_ADLINK		0x144a
#define PCI_VENDOR_ID_ICP		0x104c
#define PCI_VENDOR_ID_CONTEC		0x1221
#define PCI_VENDOR_ID_MEILHAUS		0x1402

#define COMEDI_NUM_MINORS 0x100
#define COMEDI_NUM_LEGACY_MINORS 0x10
#define COMEDI_NUM_BOARD_MINORS 0x30
#define COMEDI_FIRST_SUBDEVICE_MINOR COMEDI_NUM_BOARD_MINORS

typedef struct comedi_device_struct comedi_device;
typedef struct comedi_subdevice_struct comedi_subdevice;
typedef struct comedi_async_struct comedi_async;
typedef struct comedi_driver_struct comedi_driver;
typedef struct comedi_lrange_struct comedi_lrange;

typedef struct device device_create_result_type;

#define COMEDI_DEVICE_CREATE(cs, parent, devt, drvdata, device, fmt...) \
	device_create(cs, ((parent) ? (parent) : (device)), devt, drvdata, fmt)

struct comedi_subdevice_struct {
	comedi_device *device;
	int type;
	int n_chan;
	volatile int subdev_flags;
	int len_chanlist;	/* maximum length of channel/gain list */

	void *private;

	comedi_async *async;

	void *lock;
	void *busy;
	unsigned runflags;
	spinlock_t spin_lock;

	int io_bits;

	lsampl_t maxdata;	/* if maxdata==0, use list */
	const lsampl_t *maxdata_list;	/* list is channel specific */

	unsigned int flags;
	const unsigned int *flaglist;

	unsigned int settling_time_0;

	const comedi_lrange *range_table;
	const comedi_lrange *const *range_table_list;

	unsigned int *chanlist;	/* driver-owned chanlist (not used) */

	int (*insn_read) (comedi_device *, comedi_subdevice *, comedi_insn *,
		lsampl_t *);
	int (*insn_write) (comedi_device *, comedi_subdevice *, comedi_insn *,
		lsampl_t *);
	int (*insn_bits) (comedi_device *, comedi_subdevice *, comedi_insn *,
		lsampl_t *);
	int (*insn_config) (comedi_device *, comedi_subdevice *, comedi_insn *,
		lsampl_t *);

	int (*do_cmd) (comedi_device *, comedi_subdevice *);
	int (*do_cmdtest) (comedi_device *, comedi_subdevice *, comedi_cmd *);
	int (*poll) (comedi_device *, comedi_subdevice *);
	int (*cancel) (comedi_device *, comedi_subdevice *);
	//int (*do_lock)(comedi_device *,comedi_subdevice *);
	//int (*do_unlock)(comedi_device *,comedi_subdevice *);

	/* called when the buffer changes */
	int (*buf_change) (comedi_device * dev, comedi_subdevice * s,
		unsigned long new_size);

	void (*munge) (comedi_device * dev, comedi_subdevice * s, void *data,
		unsigned int num_bytes, unsigned int start_chan_index);
	enum dma_data_direction async_dma_dir;

	unsigned int state;

	device_create_result_type *class_dev;
	int minor;
};

struct comedi_buf_page {
	void *virt_addr;
	dma_addr_t dma_addr;
};

struct comedi_async_struct {
	comedi_subdevice *subdevice;

	void *prealloc_buf;	/* pre-allocated buffer */
	unsigned int prealloc_bufsz;	/* buffer size, in bytes */
	struct comedi_buf_page *buf_page_list;	/* virtual and dma address of each page */
	unsigned n_buf_pages;	/* num elements in buf_page_list */

	unsigned int max_bufsize;	/* maximum buffer size, bytes */
	unsigned int mmap_count;	/* current number of mmaps of prealloc_buf */

	unsigned int buf_write_count;	/* byte count for writer (write completed) */
	unsigned int buf_write_alloc_count;	/* byte count for writer (allocated for writing) */
	unsigned int buf_read_count;	/* byte count for reader (read completed) */
	unsigned int buf_read_alloc_count;	/* byte count for reader (allocated for reading) */

	unsigned int buf_write_ptr;	/* buffer marker for writer */
	unsigned int buf_read_ptr;	/* buffer marker for reader */

	unsigned int cur_chan;	/* useless channel marker for interrupt */
	/* number of bytes that have been received for current scan */
	unsigned int scan_progress;
	/* keeps track of where we are in chanlist as for munging */
	unsigned int munge_chan;
	/* number of bytes that have been munged */
	unsigned int munge_count;
	/* buffer marker for munging */
	unsigned int munge_ptr;

	unsigned int events;	/* events that have occurred */

	comedi_cmd cmd;

	wait_queue_head_t wait_head;

	// callback stuff
	unsigned int cb_mask;
	int (*cb_func) (unsigned int flags, void *);
	void *cb_arg;

	int (*inttrig) (comedi_device * dev, comedi_subdevice * s,
		unsigned int x);
};

struct comedi_driver_struct {
	struct comedi_driver_struct *next;

	const char *driver_name;
	struct module *module;
	int (*attach) (comedi_device *, comedi_devconfig *);
	int (*detach) (comedi_device *);

	/* number of elements in board_name and board_id arrays */
	unsigned int num_names;
	const char *const *board_name;
	/* offset in bytes from one board name pointer to the next */
	int offset;
};

struct comedi_device_struct {
	int use_count;
	comedi_driver *driver;
	void *private;

	device_create_result_type *class_dev;
	int minor;
	/* hw_dev is passed to dma_alloc_coherent when allocating async buffers for subdevices
	   that have async_dma_dir set to something other than DMA_NONE */
	struct device *hw_dev;

	const char *board_name;
	const void *board_ptr;
	int attached;
	int rt;
	spinlock_t spinlock;
	struct mutex mutex;
	int in_request_module;

	int n_subdevices;
	comedi_subdevice *subdevices;

	/* dumb */
	unsigned long iobase;
	unsigned int irq;

	comedi_subdevice *read_subdev;
	comedi_subdevice *write_subdev;

	struct fasync_struct *async_queue;

	void (*open) (comedi_device * dev);
	void (*close) (comedi_device * dev);
};

struct comedi_device_file_info {
	comedi_device *device;
	comedi_subdevice *read_subdevice;
	comedi_subdevice *write_subdevice;
};

#ifdef CONFIG_COMEDI_DEBUG
extern int comedi_debug;
#else
static const int comedi_debug = 0;
#endif

/*
 * function prototypes
 */

void comedi_event(comedi_device * dev, comedi_subdevice * s);
void comedi_error(const comedi_device * dev, const char *s);

/* we can expand the number of bits used to encode devices/subdevices into
 the minor number soon, after more distros support > 8 bit minor numbers
 (like after Debian Etch gets released) */
enum comedi_minor_bits {
	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;

struct comedi_device_file_info* comedi_get_device_file_info(unsigned minor);

static inline comedi_subdevice* comedi_get_read_subdevice(const struct comedi_device_file_info *info)
{
	if(info->read_subdevice) return info->read_subdevice;
	if(info->device == NULL) return NULL;
	return info->device->read_subdev;
}

static inline comedi_subdevice* comedi_get_write_subdevice(const struct comedi_device_file_info *info)
{
	if(info->write_subdevice) return info->write_subdevice;
	if(info->device == NULL) return NULL;
	return info->device->write_subdev;
}

void comedi_device_detach(comedi_device * dev);
int comedi_device_attach(comedi_device * dev, comedi_devconfig * it);
int comedi_driver_register(comedi_driver *);
int comedi_driver_unregister(comedi_driver *);

void init_polling(void);
void cleanup_polling(void);
void start_polling(comedi_device *);
void stop_polling(comedi_device *);

int comedi_buf_alloc(comedi_device * dev, comedi_subdevice * s, unsigned long
	new_size);

#ifdef CONFIG_PROC_FS
void comedi_proc_init(void);
void comedi_proc_cleanup(void);
#else
static inline void comedi_proc_init(void)
{
}
static inline void comedi_proc_cleanup(void)
{
}
#endif

/* subdevice runflags */
enum subdevice_runflags {
	SRF_USER = 0x00000001,
	SRF_RT = 0x00000002,
	/* indicates an COMEDI_CB_ERROR event has occurred since the last command was started */
	SRF_ERROR = 0x00000004,
	SRF_RUNNING = 0x08000000
};

/*
   various internal comedi functions
 */

int do_rangeinfo_ioctl(comedi_device * dev, comedi_rangeinfo * arg);
int check_chanlist(comedi_subdevice * s, int n, unsigned int *chanlist);
void comedi_set_subdevice_runflags(comedi_subdevice * s, unsigned mask,
	unsigned bits);
unsigned comedi_get_subdevice_runflags(comedi_subdevice * s);
int insn_inval(comedi_device * dev, comedi_subdevice * s,
	comedi_insn * insn, lsampl_t * data);

/* range stuff */

#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}
#define RANGE_unitless(a,b)	{(a)*1e6,(b)*1e6,0}	/* XXX */
#define BIP_RANGE(a)		{-(a)*1e6,(a)*1e6,0}
#define UNI_RANGE(a)		{0,(a)*1e6,0}

extern const comedi_lrange range_bipolar10;
extern const comedi_lrange range_bipolar5;
extern const comedi_lrange range_bipolar2_5;
extern const comedi_lrange range_unipolar10;
extern const comedi_lrange range_unipolar5;
extern const comedi_lrange range_unknown;

#define range_digital		range_unipolar5

#if __GNUC__ >= 3
#define GCC_ZERO_LENGTH_ARRAY
#else
#define GCC_ZERO_LENGTH_ARRAY 0
#endif

struct comedi_lrange_struct {
	int length;
	comedi_krange range[GCC_ZERO_LENGTH_ARRAY];
};

/* some silly little inline functions */

static inline int alloc_subdevices(comedi_device * dev,
	unsigned int num_subdevices)
{
	unsigned i;

	dev->n_subdevices = num_subdevices;
	dev->subdevices =
		kcalloc(num_subdevices, sizeof(comedi_subdevice), GFP_KERNEL);
	if (!dev->subdevices)
		return -ENOMEM;
	for (i = 0; i < num_subdevices; ++i) {
		dev->subdevices[i].device = dev;
		dev->subdevices[i].async_dma_dir = DMA_NONE;
		spin_lock_init(&dev->subdevices[i].spin_lock);
		dev->subdevices[i].minor = -1;
	}
	return 0;
}

static inline int alloc_private(comedi_device * dev, int size)
{
	dev->private = kzalloc(size, GFP_KERNEL);
	if (!dev->private)
		return -ENOMEM;
	return 0;
}

static inline unsigned int bytes_per_sample(const comedi_subdevice * subd)
{
	if (subd->subdev_flags & SDF_LSAMPL)
		return sizeof(lsampl_t);
	else
		return sizeof(sampl_t);
}

/* must be used in attach to set dev->hw_dev if you wish to dma directly
into comedi's buffer */
static inline void comedi_set_hw_dev(comedi_device * dev, struct device *hw_dev)
{
	if (dev->hw_dev) {
		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);
	}
}

int comedi_buf_put(comedi_async * async, sampl_t x);
int comedi_buf_get(comedi_async * async, sampl_t * x);

unsigned int comedi_buf_write_n_available(comedi_async * async);
unsigned int comedi_buf_write_alloc(comedi_async * async, unsigned int nbytes);
unsigned int comedi_buf_write_alloc_strict(comedi_async * async,
	unsigned int nbytes);
unsigned comedi_buf_write_free(comedi_async * async, unsigned int nbytes);
unsigned comedi_buf_read_alloc(comedi_async * async, unsigned nbytes);
unsigned comedi_buf_read_free(comedi_async * async, unsigned int nbytes);
unsigned int comedi_buf_read_n_available(comedi_async * async);
void comedi_buf_memcpy_to(comedi_async * async, unsigned int offset,
	const void *source, unsigned int num_bytes);
void comedi_buf_memcpy_from(comedi_async * async, unsigned int offset,
	void *destination, unsigned int num_bytes);
static inline unsigned comedi_buf_write_n_allocated(comedi_async * async)
{
	return async->buf_write_alloc_count - async->buf_write_count;
}
static inline unsigned comedi_buf_read_n_allocated(comedi_async * async)
{
	return async->buf_read_alloc_count - async->buf_read_count;
}

void comedi_reset_async_buf(comedi_async * async);

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;
}

int comedi_alloc_board_minor(struct device *hardware_device);
void comedi_free_board_minor(unsigned minor);
int comedi_alloc_subdevice_minor(comedi_device *dev, comedi_subdevice *s);
void comedi_free_subdevice_minor(comedi_subdevice *s);
int comedi_pci_auto_config(struct pci_dev *pcidev, const char *board_name);
void comedi_pci_auto_unconfig(struct pci_dev *pcidev);

//#ifdef CONFIG_COMEDI_RT
#include "comedi_rt.h"
//#endif

#endif /* _COMEDIDEV_H */
Commit	Line	Data
ed9eccbe DS	1	/*
	2	include/linux/comedidev.h
	3	header file for kernel-only structures, variables, and constants
	4
	5	COMEDI - Linux Control and Measurement Device Interface
	6	Copyright (C) 1997-2000 David A. Schleef <ds@schleef.org>
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21
	22	*/
	23
	24	#ifndef _COMEDIDEV_H
	25	#define _COMEDIDEV_H
	26
	27	#include <linux/kernel.h>
	28	#include <linux/module.h>
	29	#include <linux/version.h>
	30	#include <linux/kdev_t.h>
	31	#include <linux/slab.h>
	32	#include <linux/errno.h>
	33	#include <linux/spinlock.h>
	34	#include <linux/mutex.h>
	35	#include <linux/wait.h>
	36	#include <linux/mm.h>
	37	#include <linux/init.h>
	38	#include <linux/vmalloc.h>
	39	#include <linux/mm.h>
	40	#include <linux/interrupt.h>
	41	#include <linux/dma-mapping.h>
	42	#include <asm/uaccess.h>
	43	#include <asm/io.h>
	44
	45	#include "comedi.h"
	46
	47	#define DPRINTK(format, args...) do{ \
	48	if(comedi_debug)printk("comedi: " format , ## args ); \
	49	} while(0)
	50
	51	#define COMEDI_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
	52	#define COMEDI_VERSION_CODE COMEDI_VERSION(COMEDI_MAJORVERSION,COMEDI_MINORVERSION,COMEDI_MICROVERSION)
	53	#define COMEDI_RELEASE VERSION
	54
	55	#define COMEDI_INITCLEANUP_NOMODULE(x) \
	56	static int __init x ## _init_module(void) \
	57	{return comedi_driver_register(&(x));} \
	58	static void __exit x ## _cleanup_module(void) \
	59	{comedi_driver_unregister(&(x));} \
	60	module_init(x ## _init_module); \
	61	module_exit(x ## _cleanup_module); \
	62
	63	#define COMEDI_MODULE_MACROS \
	64	MODULE_AUTHOR("Comedi http://www.comedi.org"); \
65	MODULE_DESCRIPTION("Comedi low-level driver"); \
66	MODULE_LICENSE("GPL"); \
67
68	#define COMEDI_INITCLEANUP(x) \
69	COMEDI_MODULE_MACROS \
70	COMEDI_INITCLEANUP_NOMODULE(x)
71
72	#define COMEDI_PCI_INITCLEANUP_NOMODULE(comedi_driver, pci_id_table) \
73	static int __devinit comedi_driver ## _pci_probe(struct pci_dev *dev, \
74	const struct pci_device_id *ent) \
75	{ \
76	return comedi_pci_auto_config(dev, comedi_driver.driver_name); \
77	} \
78	static void __devexit comedi_driver ## _pci_remove(struct pci_dev *dev) \
79	{ \
80	comedi_pci_auto_unconfig(dev); \
81	} \
82	static struct pci_driver comedi_driver ## _pci_driver = \
83	{ \
84	.id_table = pci_id_table, \
85	.probe = & comedi_driver ## _pci_probe, \
86	.remove = __devexit_p(& comedi_driver ## _pci_remove) \
87	}; \
88	static int __init comedi_driver ## _init_module(void) \
89	{ \
90	int retval; \
91	retval = comedi_driver_register(& comedi_driver); \
92	if(retval < 0) return retval; \
93	comedi_driver ## _pci_driver.name = (char*)comedi_driver.driver_name; \
94	return pci_register_driver(& comedi_driver ## _pci_driver); \
95	} \
96	static void __exit comedi_driver ## _cleanup_module(void) \
97	{ \
98	pci_unregister_driver(& comedi_driver ## _pci_driver); \
99	comedi_driver_unregister(& comedi_driver); \
100	} \
101	module_init(comedi_driver ## _init_module); \
102	module_exit(comedi_driver ## _cleanup_module);
103
104	#define COMEDI_PCI_INITCLEANUP(comedi_driver, pci_id_table) \
105	COMEDI_MODULE_MACROS \
106	COMEDI_PCI_INITCLEANUP_NOMODULE(comedi_driver, pci_id_table)
107
108	#define PCI_VENDOR_ID_INOVA 0x104c
109	#define PCI_VENDOR_ID_NATINST 0x1093
110	#define PCI_VENDOR_ID_DATX 0x1116
111	#define PCI_VENDOR_ID_COMPUTERBOARDS 0x1307
112	#define PCI_VENDOR_ID_ADVANTECH 0x13fe
113	#define PCI_VENDOR_ID_RTD 0x1435
114	#define PCI_VENDOR_ID_AMPLICON 0x14dc
115	#define PCI_VENDOR_ID_ADLINK 0x144a
116	#define PCI_VENDOR_ID_ICP 0x104c
117	#define PCI_VENDOR_ID_CONTEC 0x1221
118	#define PCI_VENDOR_ID_MEILHAUS 0x1402
119
120	#define COMEDI_NUM_MINORS 0x100
121	#define COMEDI_NUM_LEGACY_MINORS 0x10
122	#define COMEDI_NUM_BOARD_MINORS 0x30
123	#define COMEDI_FIRST_SUBDEVICE_MINOR COMEDI_NUM_BOARD_MINORS
124
125	typedef struct comedi_device_struct comedi_device;
126	typedef struct comedi_subdevice_struct comedi_subdevice;
127	typedef struct comedi_async_struct comedi_async;
128	typedef struct comedi_driver_struct comedi_driver;
129	typedef struct comedi_lrange_struct comedi_lrange;
130
131	typedef struct device device_create_result_type;
132
133	#define COMEDI_DEVICE_CREATE(cs, parent, devt, drvdata, device, fmt...) \
134	device_create(cs, ((parent) ? (parent) : (device)), devt, drvdata, fmt)
135
136	struct comedi_subdevice_struct {
137	comedi_device *device;
138	int type;
139	int n_chan;
140	volatile int subdev_flags;
141	int len_chanlist; /* maximum length of channel/gain list */
142
143	void *private;
144
145	comedi_async *async;
146
147	void *lock;
148	void *busy;
149	unsigned runflags;
150	spinlock_t spin_lock;
151
152	int io_bits;
153
154	lsampl_t maxdata; /* if maxdata==0, use list */
155	const lsampl_t maxdata_list; / list is channel specific */
156
157	unsigned int flags;
158	const unsigned int *flaglist;
159
160	unsigned int settling_time_0;
161
162	const comedi_lrange *range_table;
163	const comedi_lrange const range_table_list;
164
165	unsigned int chanlist; / driver-owned chanlist (not used) */
166
167	int (insn_read) (comedi_device , comedi_subdevice , comedi_insn ,
168	lsampl_t *);
169	int (insn_write) (comedi_device , comedi_subdevice , comedi_insn ,
170	lsampl_t *);
171	int (insn_bits) (comedi_device , comedi_subdevice , comedi_insn ,
172	lsampl_t *);
173	int (insn_config) (comedi_device , comedi_subdevice , comedi_insn ,
174	lsampl_t *);
175
176	int (do_cmd) (comedi_device , comedi_subdevice *);
177	int (do_cmdtest) (comedi_device , comedi_subdevice , comedi_cmd );
178	int (poll) (comedi_device , comedi_subdevice *);
179	int (cancel) (comedi_device , comedi_subdevice *);
180	//int (do_lock)(comedi_device ,comedi_subdevice *);
181	//int (do_unlock)(comedi_device ,comedi_subdevice *);
182
183	/* called when the buffer changes */
184	int (buf_change) (comedi_device dev, comedi_subdevice * s,
185	unsigned long new_size);
186
187	void (munge) (comedi_device dev, comedi_subdevice * s, void *data,
188	unsigned int num_bytes, unsigned int start_chan_index);
189	enum dma_data_direction async_dma_dir;
190
191	unsigned int state;
192
193	device_create_result_type *class_dev;
194	int minor;
195	};
196
197	struct comedi_buf_page {
198	void *virt_addr;
199	dma_addr_t dma_addr;
200	};
201
202	struct comedi_async_struct {
203	comedi_subdevice *subdevice;
204
205	void prealloc_buf; / pre-allocated buffer */
206	unsigned int prealloc_bufsz; /* buffer size, in bytes */
207	struct comedi_buf_page buf_page_list; / virtual and dma address of each page */
208	unsigned n_buf_pages; /* num elements in buf_page_list */
209
210	unsigned int max_bufsize; /* maximum buffer size, bytes */
211	unsigned int mmap_count; /* current number of mmaps of prealloc_buf */
212
213	unsigned int buf_write_count; /* byte count for writer (write completed) */
214	unsigned int buf_write_alloc_count; /* byte count for writer (allocated for writing) */
215	unsigned int buf_read_count; /* byte count for reader (read completed) */
216	unsigned int buf_read_alloc_count; /* byte count for reader (allocated for reading) */
217
218	unsigned int buf_write_ptr; /* buffer marker for writer */
219	unsigned int buf_read_ptr; /* buffer marker for reader */
220
221	unsigned int cur_chan; /* useless channel marker for interrupt */
222	/* number of bytes that have been received for current scan */
223	unsigned int scan_progress;
224	/* keeps track of where we are in chanlist as for munging */
225	unsigned int munge_chan;
226	/* number of bytes that have been munged */
227	unsigned int munge_count;
228	/* buffer marker for munging */
229	unsigned int munge_ptr;
230
231	unsigned int events; /* events that have occurred */
232
233	comedi_cmd cmd;
234
235	wait_queue_head_t wait_head;
236
237	// callback stuff
238	unsigned int cb_mask;
239	int (cb_func) (unsigned int flags, void );
240	void *cb_arg;
241
242	int (inttrig) (comedi_device dev, comedi_subdevice * s,
243	unsigned int x);
244	};
245
246	struct comedi_driver_struct {
247	struct comedi_driver_struct *next;
248
249	const char *driver_name;
250	struct module *module;
251	int (attach) (comedi_device , comedi_devconfig *);
252	int (detach) (comedi_device );
253
254	/* number of elements in board_name and board_id arrays */
255	unsigned int num_names;
256	const char const board_name;
257	/* offset in bytes from one board name pointer to the next */
258	int offset;
259	};
260
261	struct comedi_device_struct {
262	int use_count;
263	comedi_driver *driver;
264	void *private;
265
266	device_create_result_type *class_dev;
267	int minor;
268	/* hw_dev is passed to dma_alloc_coherent when allocating async buffers for subdevices
269	that have async_dma_dir set to something other than DMA_NONE */
270	struct device *hw_dev;
271
272	const char *board_name;
273	const void *board_ptr;
274	int attached;
275	int rt;
276	spinlock_t spinlock;
277	struct mutex mutex;
278	int in_request_module;
279
280	int n_subdevices;
281	comedi_subdevice *subdevices;
282
283	/* dumb */
284	unsigned long iobase;
285	unsigned int irq;
286
287	comedi_subdevice *read_subdev;
288	comedi_subdevice *write_subdev;
289
290	struct fasync_struct *async_queue;
291
292	void (open) (comedi_device dev);
293	void (close) (comedi_device dev);
294	};
295
296	struct comedi_device_file_info {
297	comedi_device *device;
298	comedi_subdevice *read_subdevice;
299	comedi_subdevice *write_subdevice;
300	};
301
302	#ifdef CONFIG_COMEDI_DEBUG
303	extern int comedi_debug;
304	#else
305	static const int comedi_debug = 0;
306	#endif
307
308	/*
309	* function prototypes
310	*/
311
312	void comedi_event(comedi_device * dev, comedi_subdevice * s);
313	void comedi_error(const comedi_device * dev, const char *s);
314
315	/* we can expand the number of bits used to encode devices/subdevices into
316	the minor number soon, after more distros support > 8 bit minor numbers
317	(like after Debian Etch gets released) */
318	enum comedi_minor_bits {
319	COMEDI_DEVICE_MINOR_MASK = 0xf,
320	COMEDI_SUBDEVICE_MINOR_MASK = 0xf0
321	};
322	static const unsigned COMEDI_SUBDEVICE_MINOR_SHIFT = 4;
323	static const unsigned COMEDI_SUBDEVICE_MINOR_OFFSET = 1;
324
325	struct comedi_device_file_info* comedi_get_device_file_info(unsigned minor);
326
327	static inline comedi_subdevice* comedi_get_read_subdevice(const struct comedi_device_file_info *info)
328	{
329	if(info->read_subdevice) return info->read_subdevice;
330	if(info->device == NULL) return NULL;
331	return info->device->read_subdev;
332	}
333
334	static inline comedi_subdevice* comedi_get_write_subdevice(const struct comedi_device_file_info *info)
335	{
336	if(info->write_subdevice) return info->write_subdevice;
337	if(info->device == NULL) return NULL;
338	return info->device->write_subdev;
339	}
340
341	void comedi_device_detach(comedi_device * dev);
342	int comedi_device_attach(comedi_device * dev, comedi_devconfig * it);
343	int comedi_driver_register(comedi_driver *);
344	int comedi_driver_unregister(comedi_driver *);
345
346	void init_polling(void);
347	void cleanup_polling(void);
348	void start_polling(comedi_device *);
349	void stop_polling(comedi_device *);
350
351	int comedi_buf_alloc(comedi_device * dev, comedi_subdevice * s, unsigned long
352	new_size);
353
354	#ifdef CONFIG_PROC_FS
355	void comedi_proc_init(void);
356	void comedi_proc_cleanup(void);
357	#else
358	static inline void comedi_proc_init(void)
359	{
360	}
361	static inline void comedi_proc_cleanup(void)
362	{
363	}
364	#endif
365
366	/* subdevice runflags */
367	enum subdevice_runflags {
368	SRF_USER = 0x00000001,
369	SRF_RT = 0x00000002,
370	/* indicates an COMEDI_CB_ERROR event has occurred since the last command was started */
371	SRF_ERROR = 0x00000004,
372	SRF_RUNNING = 0x08000000
373	};
374
375	/*
376	various internal comedi functions
377	*/
378
379	int do_rangeinfo_ioctl(comedi_device * dev, comedi_rangeinfo * arg);
380	int check_chanlist(comedi_subdevice * s, int n, unsigned int *chanlist);
381	void comedi_set_subdevice_runflags(comedi_subdevice * s, unsigned mask,
382	unsigned bits);
383	unsigned comedi_get_subdevice_runflags(comedi_subdevice * s);
384	int insn_inval(comedi_device * dev, comedi_subdevice * s,
385	comedi_insn * insn, lsampl_t * data);
386
387	/* range stuff */
388
389	#define RANGE(a,b) {(a)1e6,(b)1e6,0}
390	#define RANGE_ext(a,b) {(a)1e6,(b)1e6,RF_EXTERNAL}
391	#define RANGE_mA(a,b) {(a)1e6,(b)1e6,UNIT_mA}
392	#define RANGE_unitless(a,b) {(a)1e6,(b)1e6,0} /* XXX */
393	#define BIP_RANGE(a) {-(a)1e6,(a)1e6,0}
394	#define UNI_RANGE(a) {0,(a)*1e6,0}
395
396	extern const comedi_lrange range_bipolar10;
397	extern const comedi_lrange range_bipolar5;
398	extern const comedi_lrange range_bipolar2_5;
399	extern const comedi_lrange range_unipolar10;
400	extern const comedi_lrange range_unipolar5;
401	extern const comedi_lrange range_unknown;
402
403	#define range_digital range_unipolar5
404
405	#if __GNUC__ >= 3
406	#define GCC_ZERO_LENGTH_ARRAY
407	#else
408	#define GCC_ZERO_LENGTH_ARRAY 0
409	#endif
410
411	struct comedi_lrange_struct {
412	int length;
413	comedi_krange range[GCC_ZERO_LENGTH_ARRAY];
414	};
415
416	/* some silly little inline functions */
417
418	static inline int alloc_subdevices(comedi_device * dev,
419	unsigned int num_subdevices)
420	{
421	unsigned i;
422
423	dev->n_subdevices = num_subdevices;
424	dev->subdevices =
425	kcalloc(num_subdevices, sizeof(comedi_subdevice), GFP_KERNEL);
426	if (!dev->subdevices)
427	return -ENOMEM;
428	for (i = 0; i < num_subdevices; ++i) {
429	dev->subdevices[i].device = dev;
430	dev->subdevices[i].async_dma_dir = DMA_NONE;
431	spin_lock_init(&dev->subdevices[i].spin_lock);
432	dev->subdevices[i].minor = -1;
433	}
434	return 0;
435	}
436
437	static inline int alloc_private(comedi_device * dev, int size)
438	{
439	dev->private = kzalloc(size, GFP_KERNEL);
440	if (!dev->private)
441	return -ENOMEM;
442	return 0;
443	}
444
445	static inline unsigned int bytes_per_sample(const comedi_subdevice * subd)
446	{
447	if (subd->subdev_flags & SDF_LSAMPL)
448	return sizeof(lsampl_t);
449	else
450	return sizeof(sampl_t);
451	}
452
453	/* must be used in attach to set dev->hw_dev if you wish to dma directly
454	into comedi's buffer */
455	static inline void comedi_set_hw_dev(comedi_device * dev, struct device *hw_dev)
456	{
457	if (dev->hw_dev) {
458	put_device(dev->hw_dev);
459	}
460	dev->hw_dev = hw_dev;
461	if (dev->hw_dev) {
462	dev->hw_dev = get_device(dev->hw_dev);
463	BUG_ON(dev->hw_dev == NULL);
464	}
465	}
466
467	int comedi_buf_put(comedi_async * async, sampl_t x);
468	int comedi_buf_get(comedi_async * async, sampl_t * x);
469
470	unsigned int comedi_buf_write_n_available(comedi_async * async);
471	unsigned int comedi_buf_write_alloc(comedi_async * async, unsigned int nbytes);
472	unsigned int comedi_buf_write_alloc_strict(comedi_async * async,
473	unsigned int nbytes);
474	unsigned comedi_buf_write_free(comedi_async * async, unsigned int nbytes);
475	unsigned comedi_buf_read_alloc(comedi_async * async, unsigned nbytes);
476	unsigned comedi_buf_read_free(comedi_async * async, unsigned int nbytes);
477	unsigned int comedi_buf_read_n_available(comedi_async * async);
478	void comedi_buf_memcpy_to(comedi_async * async, unsigned int offset,
479	const void *source, unsigned int num_bytes);
480	void comedi_buf_memcpy_from(comedi_async * async, unsigned int offset,
481	void *destination, unsigned int num_bytes);
482	static inline unsigned comedi_buf_write_n_allocated(comedi_async * async)
483	{
484	return async->buf_write_alloc_count - async->buf_write_count;
485	}
486	static inline unsigned comedi_buf_read_n_allocated(comedi_async * async)
487	{
488	return async->buf_read_alloc_count - async->buf_read_count;
489	}
490
491	void comedi_reset_async_buf(comedi_async * async);
492
493	static inline void *comedi_aux_data(int options[], int n)
494	{
495	unsigned long address;
496	unsigned long addressLow;
497	int bit_shift;
498	if (sizeof(int) >= sizeof(void *))
499	address = options[COMEDI_DEVCONF_AUX_DATA_LO];
500	else {
501	address = options[COMEDI_DEVCONF_AUX_DATA_HI];
502	bit_shift = sizeof(int) * 8;
503	address <<= bit_shift;
504	addressLow = options[COMEDI_DEVCONF_AUX_DATA_LO];
505	addressLow &= (1UL << bit_shift) - 1;
506	address \|= addressLow;
507	}
508	if (n >= 1)
509	address += options[COMEDI_DEVCONF_AUX_DATA0_LENGTH];
510	if (n >= 2)
511	address += options[COMEDI_DEVCONF_AUX_DATA1_LENGTH];
512	if (n >= 3)
513	address += options[COMEDI_DEVCONF_AUX_DATA2_LENGTH];
514	BUG_ON(n > 3);
515	return (void *)address;
516	}
517
518	int comedi_alloc_board_minor(struct device *hardware_device);
519	void comedi_free_board_minor(unsigned minor);
520	int comedi_alloc_subdevice_minor(comedi_device dev, comedi_subdevice s);
521	void comedi_free_subdevice_minor(comedi_subdevice *s);
522	int comedi_pci_auto_config(struct pci_dev pcidev, const char board_name);
523	void comedi_pci_auto_unconfig(struct pci_dev *pcidev);
524
525	//#ifdef CONFIG_COMEDI_RT
526	#include "comedi_rt.h"
527	//#endif
528
529	#endif /* _COMEDIDEV_H */