#include <io.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <types.h>
#include <common.h>
#include <log.h>
#include <sys-clk.h>
#include "usb.h"
#include "usb_controller.h"
#include "usb_dma.h"

Include dependency graph for usb_dma.c:

Macros
#define	SUNXI_USB_DMA_MAX (8)

Functions
static int	lowlevel_usb_dma_set_channal_para (uint64_t husb, uint32_t dma_chan, uint32_t trans_dir, uint32_t ep_type)
	Set the parameters for a USB DMA channel.

static int	lowlevel_usb_dma_set_packet_len (uint64_t husb, uint32_t dma_chan, uint32_t pkt_len)
	Set the packet length for a USB DMA channel.

static int	lowlevel_usb_dma_start (uint64_t husb, uint32_t dma_chan, uint32_t addr, uint32_t pkt_len)
	Start a USB DMA transfer on a specific channel.

static int	lowlevel_usb_dma_int_stop (uint64_t husb, uint32_t dma_chan)
	Stop a USB DMA transfer on a specific channel.

static int	lowlevel_usb_dma_int_query (uint64_t husb)
	Query the status of USB DMA transfers.

static int	lowlevel_usb_dma_int_clear (uint64_t husb)
	Clear the status of USB DMA transfers.

static int	usb_index_check (uint32_t dma_index)
	Check if the USB DMA index is valid.

int	usb_dma_init (uint64_t husb)
	Initialize USB DMA.

int	usb_dma_request (void)
	Request a USB DMA channel.

int	usb_dma_release (uint32_t dma_index)
	Release a USB DMA channel.

int	usb_dma_setting (uint32_t dma_index, uint32_t trans_dir, uint32_t ep)
	Set the parameters of a USB DMA channel.

int	usb_dma_set_pktlen (uint32_t dma_index, uint32_t pkt_len)
	Set the packet length of a USB DMA channel.

int	usb_dma_start (uint32_t dma_index, uint32_t addr, uint32_t bytes)
	Start a USB DMA transfer.

int	usb_dma_stop (uint32_t dma_index)
	Stop a USB DMA transfer.

int	usb_dma_int_query (uint32_t dma_index)
	Query the interrupt status of a USB DMA channel.

int	usb_dma_int_clear (void)
	Clear the interrupt status of all USB DMA channels.

Variables
static uint32_t	usb_hd

static uint32_t	usb_dma_used [SUNXI_USB_DMA_MAX]

Macro Definition Documentation

◆ SUNXI_USB_DMA_MAX

#define SUNXI_USB_DMA_MAX (8)

Function Documentation

◆ lowlevel_usb_dma_int_clear()

static int lowlevel_usb_dma_int_clear ( uint64_t husb )

static

Clear the status of USB DMA transfers.

This function is used to clear the status of USB DMA transfers.

Parameters

husb	The USB controller handle

Returns: 0 on success, -1 on failure

◆ lowlevel_usb_dma_int_query()

static int lowlevel_usb_dma_int_query ( uint64_t husb )

static

Query the status of USB DMA transfers.

This function is used to query the status of USB DMA transfers.

Parameters

husb	The USB controller handle

Returns: The status of DMA transfers on success, -1 on failure

◆ lowlevel_usb_dma_int_stop()

static int lowlevel_usb_dma_int_stop	(	uint64_t	husb,
		uint32_t	dma_chan
	)

static

Stop a USB DMA transfer on a specific channel.

This function is used to stop a USB DMA transfer on a specific channel.

Parameters

husb	The USB controller handle
dma_chan	The DMA channel number

Returns: 0 on success, -1 on failure

◆ lowlevel_usb_dma_set_channal_para()

static int lowlevel_usb_dma_set_channal_para	(	uint64_t	husb,
		uint32_t	dma_chan,
		uint32_t	trans_dir,
		uint32_t	ep_type
	)

static

Set the parameters for a USB DMA channel.

This function is used to configure the parameters for a specific USB DMA channel.

Parameters

husb	The USB controller handle
dma_chan	The DMA channel number
trans_dir	The transfer direction (0: OUT, 1: IN)
ep_type	The endpoint type

Returns: 0 on success, -1 on failure

◆ lowlevel_usb_dma_set_packet_len()

static int lowlevel_usb_dma_set_packet_len	(	uint64_t	husb,
		uint32_t	dma_chan,
		uint32_t	pkt_len
	)

static

Set the packet length for a USB DMA channel.

This function is used to set the packet length for a specific USB DMA channel.

Parameters

husb	The USB controller handle
dma_chan	The DMA channel number
pkt_len	The packet length to be set

Returns: 0 on success, -1 on failure

◆ lowlevel_usb_dma_start()

static int lowlevel_usb_dma_start	(	uint64_t	husb,
		uint32_t	dma_chan,
		uint32_t	addr,
		uint32_t	pkt_len
	)

static

Start a USB DMA transfer on a specific channel.

This function is used to start a USB DMA transfer on a specific channel with the given address and packet length.

Parameters

husb	The USB controller handle
dma_chan	The DMA channel number
addr	The address of the buffer to be transferred
pkt_len	The length of the packet to be transferred

Returns: 0 on success, -1 on failure

◆ usb_dma_init()

int usb_dma_init ( uint64_t husb )

Initialize USB DMA.

This function is used to initialize USB DMA.

Parameters

husb	The USB controller handle

Returns: 0 on success

◆ usb_dma_int_clear()

int usb_dma_int_clear ( void )

Clear the interrupt status of all USB DMA channels.

This function is used to clear the interrupt status of all USB DMA channels.

Returns: 0 on success, -1 on failure

◆ usb_dma_int_query()

int usb_dma_int_query ( uint32_t dma_index )

Query the interrupt status of a USB DMA channel.

This function is used to query the interrupt status of a USB DMA channel.

Parameters

dma_index The DMA index to query

Returns: The interrupt status of the DMA channel

◆ usb_dma_release()

int usb_dma_release ( uint32_t dma_index )

Release a USB DMA channel.

This function is used to release a USB DMA channel.

Parameters

dma_index The DMA index to release

Returns: 0 on success, -1 on failure

◆ usb_dma_request()

int usb_dma_request ( void )

Request a USB DMA channel.

This function is used to request a USB DMA channel.

Returns: The DMA index on success, 0 if no available DMA channel is found

◆ usb_dma_set_pktlen()

int usb_dma_set_pktlen	(	uint32_t	dma_index,
		uint32_t	pkt_len
	)

Set the packet length of a USB DMA channel.

This function is used to set the packet length of a USB DMA channel.

Parameters

dma_index	The DMA index to configure
pkt_len	The packet length to set

Returns: 0 on success, -1 on failure

◆ usb_dma_setting()

int usb_dma_setting	(	uint32_t	dma_index,
		uint32_t	trans_dir,
		uint32_t	ep
	)

Set the parameters of a USB DMA channel.

This function is used to set the parameters of a USB DMA channel.

Parameters

dma_index	The DMA index to configure
trans_dir	The transfer direction (IN or OUT)
ep	The endpoint number

Returns: 0 on success, -1 on failure

◆ usb_dma_start()

int usb_dma_start	(	uint32_t	dma_index,
		uint32_t	addr,
		uint32_t	bytes
	)

Start a USB DMA transfer.

This function is used to start a USB DMA transfer.

Parameters

dma_index	The DMA index to use
addr	The address of the buffer for the transfer
bytes	The number of bytes to transfer

Returns: 0 on success, -1 on failure

◆ usb_dma_stop()

int usb_dma_stop ( uint32_t dma_index )

Stop a USB DMA transfer.

This function is used to stop a USB DMA transfer.

Parameters

dma_index The DMA index to stop

Returns: 0 on success, -1 on failure

◆ usb_index_check()

static int usb_index_check ( uint32_t dma_index )

static

Check if the USB DMA index is valid.

This function is used to check if the USB DMA index is within range and is currently in use.

Parameters

dma_index The USB DMA index to check

Returns: 0 on success, -1 on failure

Variable Documentation

◆ usb_dma_used

uint32_t usb_dma_used[SUNXI_USB_DMA_MAX]

static

◆ usb_hd

uint32_t usb_hd

static

Macros

Functions

Variables

Macro Definition Documentation

◆ SUNXI_USB_DMA_MAX

Function Documentation

◆ lowlevel_usb_dma_int_clear()

◆ lowlevel_usb_dma_int_query()

◆ lowlevel_usb_dma_int_stop()

◆ lowlevel_usb_dma_set_channal_para()

◆ lowlevel_usb_dma_set_packet_len()

◆ lowlevel_usb_dma_start()

◆ usb_dma_init()

◆ usb_dma_int_clear()

◆ usb_dma_int_query()

◆ usb_dma_release()

◆ usb_dma_request()

◆ usb_dma_set_pktlen()

◆ usb_dma_setting()

◆ usb_dma_start()

◆ usb_dma_stop()

◆ usb_index_check()

Variable Documentation

◆ usb_dma_used

◆ usb_hd