dma_v2.c File Reference

#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/dmaengine.h>
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/workqueue.h>
#include <linux/prefetch.h>
#include <linux/i7300_idle.h>
#include "dma.h"
#include "dma_v2.h"
#include "registers.h"
#include "hw.h"
#include "../dmaengine.h"

Go to the source code of this file.

Functions
	module_param (ioat_ring_alloc_order, int, 0644)
	MODULE_PARM_DESC (ioat_ring_alloc_order,"ioat2+: allocate 2^n descriptors per channel"" (default: 8 max: 16)")
	module_param (ioat_ring_max_alloc_order, int, 0644)
	MODULE_PARM_DESC (ioat_ring_max_alloc_order,"ioat2+: upper limit for ring size (default: 16)")
void	__ioat2_issue_pending (struct ioat2_dma_chan *ioat)
void	ioat2_issue_pending (struct dma_chan *c)
void	ioat2_cleanup_event (unsigned long data)
void	__ioat2_restart_chan (struct ioat2_dma_chan *ioat)
int	ioat2_quiesce (struct ioat_chan_common *chan, unsigned long tmo)
int	ioat2_reset_sync (struct ioat_chan_common *chan, unsigned long tmo)
void	ioat2_timer_event (unsigned long data)
int	ioat2_enumerate_channels (struct ioatdma_device *device)
void	ioat2_free_chan_resources (struct dma_chan *c)
int	ioat2_alloc_chan_resources (struct dma_chan *c)
bool	reshape_ring (struct ioat2_dma_chan *ioat, int order)
int	ioat2_check_space_lock (struct ioat2_dma_chan *ioat, int num_descs)
struct dma_async_tx_descriptor *	ioat2_dma_prep_memcpy_lock (struct dma_chan *c, dma_addr_t dma_dest, dma_addr_t dma_src, size_t len, unsigned long flags)
int __devinit	ioat2_dma_probe (struct ioatdma_device *device, int dca)

Variables
int	ioat_ring_alloc_order = 8
struct kobj_type	ioat2_ktype

Function Documentation

void __ioat2_issue_pending

(

struct ioat2_dma_chan *

ioat

)

Definition at line 56 of file dma_v2.c.

void __ioat2_restart_chan

(

struct ioat2_dma_chan *

ioat

)

Definition at line 198 of file dma_v2.c.

int ioat2_alloc_chan_resources

(

struct dma_chan *

c

)

Definition at line 500 of file dma_v2.c.

int ioat2_check_space_lock	(	struct ioat2_dma_chan *	ioat,
		int	num_descs
	)

ioat2_check_space_lock - verify space and grab ring producer lock : ioat2,3 channel (ring) to operate on : allocation length

Definition at line 678 of file dma_v2.c.

void ioat2_cleanup_event

(

unsigned long

data

)

Definition at line 190 of file dma_v2.c.

struct dma_async_tx_descriptor* ioat2_dma_prep_memcpy_lock ( struct dma_chan *  c, dma_addr_t  dma_dest, dma_addr_t  dma_src, size_t  len, unsigned long  flags  )

read

Definition at line 732 of file dma_v2.c.

int __devinit ioat2_dma_probe	(	struct ioatdma_device *	device,
		int	dca
	)

Definition at line 865 of file dma_v2.c.

int ioat2_enumerate_channels

(

struct ioatdma_device *

device

)

ioat2_enumerate_channels - find and initialize the device's channels : the device to be enumerated

Definition at line 353 of file dma_v2.c.

void ioat2_free_chan_resources

(

struct dma_chan *

c

)

ioat2_free_chan_resources - release all the descriptors : the channel to be cleaned

Definition at line 781 of file dma_v2.c.

void ioat2_issue_pending

(

struct dma_chan *

c

)

Definition at line 68 of file dma_v2.c.

int ioat2_quiesce	(	struct ioat_chan_common *	chan,
		unsigned long	tmo
	)

Definition at line 222 of file dma_v2.c.

int ioat2_reset_sync	(	struct ioat_chan_common *	chan,
		unsigned long	tmo
	)

Definition at line 243 of file dma_v2.c.

void ioat2_timer_event

(

unsigned long

data

)

Definition at line 272 of file dma_v2.c.

module_param	(	ioat_ring_alloc_order	,
		int	,
		0644
	)

module_param	(	ioat_ring_max_alloc_order	,
		int	,
		0644
	)

MODULE_PARM_DESC	(	ioat_ring_alloc_order	,
		"ioat2+: allocate 2^n descriptors per channel"" (default: 8 max: 16)"
	)

MODULE_PARM_DESC	(	ioat_ring_max_alloc_order	,
		"ioat2+: upper limit for ring size (default: 16)"
	)

bool reshape_ring	(	struct ioat2_dma_chan *	ioat,
		int	order
	)

Definition at line 566 of file dma_v2.c.

Variable Documentation

struct kobj_type ioat2_ktype

Initial value:

= {
    .sysfs_ops = &ioat_sysfs_ops,
    .default_attrs = ioat2_attrs,
}

Definition at line 860 of file dma_v2.c.

int ioat_ring_alloc_order = 8

Definition at line 46 of file dma_v2.c.