interface.c File Reference

#include <linux/pci.h>
#include "mei_dev.h"
#include <linux/mei.h>
#include "interface.h"

Go to the source code of this file.

Functions
void	mei_hcsr_set (struct mei_device *dev)
void	mei_enable_interrupts (struct mei_device *dev)
void	mei_disable_interrupts (struct mei_device *dev)
bool	mei_hbuf_is_empty (struct mei_device *dev)
int	mei_hbuf_empty_slots (struct mei_device *dev)
int	mei_write_message (struct mei_device *dev, struct mei_msg_hdr *header, unsigned char *buf, unsigned long length)
int	mei_count_full_read_slots (struct mei_device *dev)
void	mei_read_slots (struct mei_device *dev, unsigned char *buffer, unsigned long buffer_length)
int	mei_flow_ctrl_creds (struct mei_device *dev, struct mei_cl *cl)
int	mei_flow_ctrl_reduce (struct mei_device *dev, struct mei_cl *cl)
int	mei_send_flow_control (struct mei_device *dev, struct mei_cl *cl)
int	mei_other_client_is_connecting (struct mei_device *dev, struct mei_cl *cl)
int	mei_disconnect (struct mei_device *dev, struct mei_cl *cl)
int	mei_connect (struct mei_device *dev, struct mei_cl *cl)

Function Documentation

int mei_connect	(	struct mei_device *	dev,
		struct mei_cl *	cl
	)

mei_connect - sends connect message to fw.

: the device structure : private data of the file object

This function returns -EIO on write failure

Definition at line 385 of file interface.c.

int mei_count_full_read_slots

(

struct mei_device *

dev

)

mei_count_full_read_slots - counts read full slots.

: the device structure

returns -1(ESLOTS_OVERFLOW) if overflow, otherwise filled slots count

Definition at line 171 of file interface.c.

void mei_disable_interrupts

(

struct mei_device *

dev

)

mei_csr_disable_interrupts - disables mei device interrupts

: the device structure

Definition at line 54 of file interface.c.

int mei_disconnect	(	struct mei_device *	dev,
		struct mei_cl *	cl
	)

mei_disconnect - sends disconnect message to fw.

: the device structure : private data of the file object

This function returns -EIO on write failure

Definition at line 352 of file interface.c.

void mei_enable_interrupts

(

struct mei_device *

dev

)

mei_csr_enable_interrupts - enables mei device interrupts

: the device structure

Definition at line 43 of file interface.c.

int mei_flow_ctrl_creds	(	struct mei_device *	dev,
		struct mei_cl *	cl
	)

mei_flow_ctrl_creds - checks flow_control credentials.

: the device structure : private data of the file object

returns 1 if mei_flow_ctrl_creds >0, 0 - otherwise. -ENOENT if mei_cl is not present -EINVAL if single_recv_buf == 0

Definition at line 224 of file interface.c.

int mei_flow_ctrl_reduce	(	struct mei_device *	dev,
		struct mei_cl *	cl
	)

mei_flow_ctrl_reduce - reduces flow_control.

: the device structure : private data of the file object

Returns

0 on success -ENOENT when me client is not found -EINVAL when ctrl credits are <= 0

Definition at line 259 of file interface.c.

int mei_hbuf_empty_slots

(

struct mei_device *

dev

)

mei_hbuf_empty_slots - counts write empty slots.

: the device structure

returns -1(ESLOTS_OVERFLOW) if overflow, otherwise empty slots count

Definition at line 98 of file interface.c.

bool mei_hbuf_is_empty

(

struct mei_device *

dev

)

mei_hbuf_is_empty - checks if host buffer is empty.

: the device structure

returns true if empty, false - otherwise.

Definition at line 86 of file interface.c.

void mei_hcsr_set

(

struct mei_device *

dev

)

mei_set_csr_register - writes H_CSR register to the mei device, and ignores the H_IS bit for it is write-one-to-zero.

: the device structure

Definition at line 30 of file interface.c.

int mei_other_client_is_connecting	(	struct mei_device *	dev,
		struct mei_cl *	cl
	)

mei_other_client_is_connecting - checks if other client with the same client id is connected.

: the device structure : private data of the file object

returns 1 if other client is connected, 0 - otherwise.

Definition at line 328 of file interface.c.

void mei_read_slots	(	struct mei_device *	dev,
		unsigned char *	buffer,
		unsigned long	buffer_length
	)

mei_read_slots - reads a message from mei device.

: the device structure : message buffer will be written : message size will be read

Definition at line 197 of file interface.c.

int mei_send_flow_control	(	struct mei_device *	dev,
		struct mei_cl *	cl
	)

mei_send_flow_control - sends flow control to fw.

: the device structure : private data of the file object

This function returns -EIO on write failure

Definition at line 292 of file interface.c.

int mei_write_message	(	struct mei_device *	dev,
		struct mei_msg_hdr *	header,
		unsigned char *	buf,
		unsigned long	length
	)

mei_write_message - writes a message to mei device.

: the device structure : header of message : message buffer will be written : message size will be written

This function returns -EIO if write has failed

Definition at line 122 of file interface.c.