dmatest.c File Reference

#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/freezer.h>
#include <linux/init.h>
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/wait.h>

Go to the source code of this file.

Data Structures
struct	dmatest_thread
struct	dmatest_chan
struct	dmatest_done

Macros
#define	PATTERN_SRC   0x80
#define	PATTERN_DST   0x00
#define	PATTERN_COPY   0x40
#define	PATTERN_OVERWRITE   0x20
#define	PATTERN_COUNT_MASK   0x1f

Functions
	module_param (test_buf_size, uint, S_IRUGO)
	MODULE_PARM_DESC (test_buf_size,"Size of the memcpy test buffer")
	module_param_string (channel, test_channel, sizeof(test_channel), S_IRUGO)
	MODULE_PARM_DESC (channel,"Bus ID of the channel to test (default: any)")
	module_param_string (device, test_device, sizeof(test_device), S_IRUGO)
	MODULE_PARM_DESC (device,"Bus ID of the DMA Engine to test (default: any)")
	module_param (threads_per_chan, uint, S_IRUGO)
	MODULE_PARM_DESC (threads_per_chan,"Number of threads to start per channel (default: 1)")
	module_param (max_channels, uint, S_IRUGO)
	MODULE_PARM_DESC (max_channels,"Maximum number of channels to use (default: all)")
	module_param (iterations, uint, S_IRUGO)
	MODULE_PARM_DESC (iterations,"Iterations before stopping test (default: infinite)")
	module_param (xor_sources, uint, S_IRUGO)
	MODULE_PARM_DESC (xor_sources,"Number of xor source buffers (default: 3)")
	module_param (pq_sources, uint, S_IRUGO)
	MODULE_PARM_DESC (pq_sources,"Number of p+q source buffers (default: 3)")
	module_param (timeout, uint, S_IRUGO)
	MODULE_PARM_DESC (timeout,"Transfer Timeout in msec (default: 3000), ""Pass -1 for infinite timeout")
	late_initcall (dmatest_init)
	module_exit (dmatest_exit)
	MODULE_AUTHOR ("Haavard Skinnemoen (Atmel)")
	MODULE_LICENSE ("GPL v2")

Macro Definition Documentation

#define PATTERN_COPY   0x40

Definition at line 77 of file dmatest.c.

#define PATTERN_COUNT_MASK   0x1f

Definition at line 79 of file dmatest.c.

#define PATTERN_DST   0x00

Definition at line 76 of file dmatest.c.

#define PATTERN_OVERWRITE   0x20

Definition at line 78 of file dmatest.c.

#define PATTERN_SRC   0x80

Definition at line 75 of file dmatest.c.

Function Documentation

late_initcall

(

dmatest_init

)

MODULE_AUTHOR

(

"Haavard Skinnemoen (Atmel)"

)

module_exit

(

dmatest_exit

)

MODULE_LICENSE

(

"GPL v2"

)

module_param	(	test_buf_size	,
		uint	,
		S_IRUGO
	)

module_param	(	threads_per_chan	,
		uint	,
		S_IRUGO
	)

module_param	(	max_channels	,
		uint	,
		S_IRUGO
	)

module_param	(	iterations	,
		uint	,
		S_IRUGO
	)

module_param	(	xor_sources	,
		uint	,
		S_IRUGO
	)

module_param	(	pq_sources	,
		uint	,
		S_IRUGO
	)

module_param	(	timeout	,
		uint	,
		S_IRUGO
	)

module_param_string	(	channel	,
		test_channel	,
		sizeof(test_channel)	,
		S_IRUGO
	)

module_param_string	(	device	,
		test_device	,
		sizeof(test_device)	,
		S_IRUGO
	)

MODULE_PARM_DESC	(	test_buf_size	,
		"Size of the memcpy test buffer"
	)

MODULE_PARM_DESC	(	channel	,
		"Bus ID of the channel to test (default: any)"
	)

MODULE_PARM_DESC	(	device	,
		"Bus ID of the DMA Engine to test (default: any)"
	)

MODULE_PARM_DESC	(	threads_per_chan	,
		"Number of threads to start per channel (default: 1)"
	)

MODULE_PARM_DESC	(	max_channels	,
		"Maximum number of channels to use (default: all)"
	)

MODULE_PARM_DESC	(	iterations	,
		"Iterations before stopping test (default: infinite)"
	)

MODULE_PARM_DESC	(	xor_sources	,
		"Number of xor source buffers (default: 3)"
	)

MODULE_PARM_DESC	(	pq_sources	,
		"Number of p+q source buffers (default: 3)"
	)

MODULE_PARM_DESC	(	timeout	,
		"Transfer Timeout in msec	default: 3000,
		""Pass-1 for infinite timeout"
	)