#include <dsplink.h>
#include <archdefs.h>
#include <mpcsdefs.h>

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Data Structures

struct RingIO_Attrs_tag

struct RingIO_Client_tag

struct RingIO_ControlStruct_tag

struct RingIO_Entry_tag

struct RingIO_Ctrl_tag

Defines

#define RINGIO_INVALID_ATTR (Uint16) 0xFFFFl

This constant denotes an invalid attribute type. This should not be used for any valid attribute. ============================================================================.

#define RINGIO_DATABUF_CACHEUSE 0x1u

These constants denote the flags provided while opening the RingIO. ============================================================================.

#define RINGIO_ATTRBUF_CACHEUSE 0x2u

#define RINGIO_CONTROL_CACHEUSE 0x4u

#define RINGIO_NEED_EXACT_SIZE 0x8u

#define RINGIO_NAME_MAX_LEN 32u

Maximum length of RingIO strings. ============================================================================.

Typedefs

RingIO_Handle

This type is used for the handle to the RingIO Client structure. ============================================================================

============================================================================

typedef void * RingIO_Handle

RingIO_ControlHandle

This type is used for the handle to the Shared Control structure. ============================================================================

============================================================================

typedef struct
RingIO_ControlStruct_tag * RingIO_ControlHandle

RingIO_BufPtr

This type is used for the Buffer Pointer Type. ============================================================================

============================================================================

typedef void * RingIO_BufPtr

RingIO_NotifyParam

This type is used for the Notification Parameter. ============================================================================

============================================================================

typedef void * RingIO_NotifyParam

RingIO_NotifyMsg

This type is used for the Notification Message. ============================================================================

============================================================================

typedef Uint16 RingIO_NotifyMsg

RingIO_NotifyFunc

Signature of function used as the Notification function.

============================================================================

Parameters:

handle	Handle to the RingIO.
param	Parameter used while registering the notification.
msg	Message passed along with notification.

Returns:: None. ============================================================================

typedef void(* RingIO_NotifyFunc )(RingIO_Handle handle, RingIO_NotifyParam param, RingIO_NotifyMsg msg)

RingIO_Attrs

This structure defines the RingIO Creation Parameters.

============================================================================

Parameters:

transportType	Transport type - This specifies whether the data transport is between DSP<-> DSP or DSP<->ARM.
ctrlPoolId	Pool to be used to allocate memory for control structure.
dataPoolId	Pool to be used to allocate memory for data buffer.
attrPoolId	Pool to be used to allocate memory for attribute buffer.
lockPoolId	Pool to be used to allocate memory for lock structure.
dataBufSize	Data Buffer Size in bytes.
footBufSize	Footer area for providing contiguous buffer to a reader.
attrBufSize	Attribute buffer size in bytes. ============================================================================

typedef struct RingIO_Attrs_tag RingIO_Attrs

RingIO_ControlStruct

This structure defines the RingIO Control Structure. This structure is stored in shared memory and is accessible by all clients. The control structure supports a single reader and a single writer for the ring buffer.

============================================================================

Parameters:

procId	ID of DSP processor.
entryId	ID of the RingIO within the entry array.
transportType	Transport type - This specifies whether the data transport is between DSP<-> DSP or DSP<->ARM.
phyBufStart	Physical start address of the data buffer.
phyBufEnd	Total size of the Data buffer (offset from phyBufStart)
curBufEnd	Current buffer size. This may be <= dataBufEnd (offset from phyBufStart)
dataBufEnd	Size of the main data buffer (offset from phyBufStart)
dataBufSize	Size of the data buffer
footBufSize	Size of the foot buffer used for providing linear buffer to a reader
validSize	Amount of valid data available in the data buffer. Valid Data is the total data that is readable by the reader using an acquire call. This does not include the size of the data buffer already acquired by the reader
emptySize	Amount of empty space in the data buffer. This does not include the empty space already acquired by the writer
phyAttrStart	Physical start address of the attr buffer
phyAttrBufEnd	Total Size of the attribute buffer (offset)
curAttrBufEnd	Current Attr buffer size. This may be <= the phyAttrBufEnd (offset)
validAttrSize	Amount of valid attribute bytes available in the attribute buffer. The valid attribute bytes does not include the attribute bytes already acquired by the reader
emptyAttrSize	Amount of empty space in the attr buffer. This does not include the empty attr space already acquired by the writer
prevAttrOffset	Offset of the most recent attribute
phyLockHandle	Physical (DSP) address of the lock that should be used to protect the Control structure from multiple accesses.
padding	Padding.
writer	Writer state information
reader	Reader state information ============================================================================

typedef struct
RingIO_ControlStruct_tag RingIO_ControlStruct

RingIO_Client

This structure defines the RingIO Shared memory client structure. The RingIO Reader or Writer state information is stored in this structure

============================================================================

Parameters:

procId	Processor Id where the client is executing
openMode	Indicates whether the client is a reader or writer
pDataStart	Virtual start address of the data buffer
pAttrStart	Virtual start address of the attr buffer
acqStart	Start offset of data buffer that has been acquired by the application.
acqSize	Size of data that has been acquired
acqAttrStart	Start offset of the acquired attribute buffer
acqAttrSize	Size of attribute data that has been acquired
notifyType	Notification type
notifyFunc	Notification function for this client
notifyParam	Parameter to the Notification function
notifyWaterMark	Watermark that should be satisfied before notification is done
flags	Counting bits from MSB to LSB 0....31 B31 - Denotes whether the client uses cache for accessing the data buffer (dataBufCacheUseFlag) B30 - Denotes whether the client uses cache for accessing the attribute buffer (attrBufCacheUseFlag) B29 - Denotes whether the client uses cache for accessing the control struct (controlStructCacheFlag) B28 - Denotes whether requests for acquire buffer should always be satisfied. If a contiguous request could not be satisfied because of the buffer wrap, we need to mark an early end and provide only a contiguous buffer (contiguousBufFlag)
virtControlHandle	Handle to the Control structure. Apps do not have direct access to the control structure. The Control structure can only be accessed through the client handle
virtLockHandle	Virtual (GPP) address of the lock that should be used to protect the Control structure from multiple accesses.
isValid	Indicates whether the Client is initialized
notifyFlag	Denotes whether notification needs to be done or not
refCount	Denotes whether RingIO has been re-opened or not
padding	Padding. ============================================================================

typedef struct RingIO_Client_tag RingIO_Client

RingIO_Entry

Entry structure for the RingIO data transport

============================================================================

Parameters:

name	System wide unique identifier for the RingIO
phyControl	Physical (DSP) address of the Control structure for the RingIO.
virtControl	Virtual (GPP) address of the Control structure for the RingIO.
ownerProcId	Creator's processor ID of this ringio.
ctrlPoolId	Pool to be used to allocate memory for control structure.
dataPoolId	Pool to be used to allocate memory for data buffer.
attrPoolId	Pool to be used to allocate memory for attribute buffer.
lockPoolId	Pool to be used to allocate memory for lock structure.
padding	Padding. ============================================================================

typedef struct RingIO_Entry_tag RingIO_Entry

Enumerations

RingIO_OpenMode

Enumeration of RingIO open modes.

============================================================================

Parameters:

RINGIO_MODE_READ	Reader mode.
RINGIO_MODE_WRITE	Writer mode. ============================================================================

enum RingIO_OpenMode {
RINGIO_MODE_READ = 0,
RINGIO_MODE_WRITE,
RINGIO_MODE_READ = 0u,
RINGIO_MODE_WRITE
}

RingIO_TransportType

Enumeration of RingIO transport types.

============================================================================

Parameters:

RINGIO_TRANSPORT_DSP_DSP	Intra-DSP transport.
RINGIO_TRANSPORT_GPP_DSP	GPP<->DSP transport. ============================================================================

enum RingIO_TransportType {
RINGIO_TRANSPORT_DSP_DSP = 1,
RINGIO_TRANSPORT_GPP_DSP,
RINGIO_TRANSPORT_DSP_DSP = 1u,
RINGIO_TRANSPORT_GPP_DSP
}

RingIO_NotifyType

Enumeration of RingIO notification types.

============================================================================

Parameters:

RINGIO_NOTIFICATION_NONE	No notification required.
RINGIO_NOTIFICATION_ALWAYS	Notify whenever the other side sends data/frees up space.
RINGIO_NOTIFICATION_ONCE	Notify when the other side sends data/frees up space. Once the notification is done, the notification is disabled until it is enabled again
RINGIO_NOTIFICATION_HDWRFIFO_ALWAYS	Notify whenever the other side sends data/frees up space. This notification is never disabled.
RINGIO_NOTIFICATION_HDWRFIFO_ONCE	Notify when the other side sends data/frees up space. Once the notification is done, the notification is disabled until it is enabled again. The notification is enabled once the watermark is crossed and does not require buffer to get full/empty.

============================================================================

enum RingIO_NotifyType {
RINGIO_NOTIFICATION_NONE = 0,
RINGIO_NOTIFICATION_ALWAYS,
RINGIO_NOTIFICATION_ONCE,
RINGIO_NOTIFICATION_HDWRFIFO_ALWAYS,
RINGIO_NOTIFICATION_HDWRFIFO_ONCE,
RINGIO_NOTIFICATION_NONE = 0u,
RINGIO_NOTIFICATION_ALWAYS,
RINGIO_NOTIFICATION_ONCE,
RINGIO_NOTIFICATION_HDWRFIFO_ALWAYS,
RINGIO_NOTIFICATION_HDWRFIFO_ONCE
}

RingIO_Ctrl

This structure defines the control structure required by the RINGIO component. It contains information about all RINGIO objects shared between the GPP and a specific DSP.

============================================================================

Parameters:

isInitialized	Flag to indicate if this region was initialized
dspId	ID of the DSP with which the RingIO Region is shared
maxEntries	Maximum number of RingIO instances supported by the RingIO.
ipsId	ID of the IPS to be used.
ipsEventNo	IPS Event number associated with the RingIO.
dspAddrEntry	Pointer to array in DSP address space of RINGIO objects that can be created.
padding	Padding.
lockObj	Lock used to protect the shared RingIO_Ctrl from multiple simultaneous accesses. ============================================================================

#define RingIOEntry RingIO_Entry

#define RingIORegion RingIO_Ctrl

#define RingIO_SendNotify RingIO_sendNotify

typedef struct RingIO_Ctrl_tag RingIO_Ctrl

Define Documentation

#define RINGIO_INVALID_ATTR (Uint16) 0xFFFFl

This constant denotes an invalid attribute type. This should not be used for any valid attribute. ============================================================================.

============================================================================

Constant:: RINGIO_INVALID_ATTR

#define RINGIO_DATABUF_CACHEUSE 0x1u

These constants denote the flags provided while opening the RingIO. ============================================================================.

============================================================================

Constant:: RINGIO_DATABUF_CACHEUSE, RINGIO_ATTRBUF_CACHEUSE, RINGIO_ATTRBUF_CACHEUSE, RINGIO_NEED_EXACT_SIZE

#define RINGIO_ATTRBUF_CACHEUSE 0x2u

#define RINGIO_CONTROL_CACHEUSE 0x4u

#define RINGIO_NEED_EXACT_SIZE 0x8u

#define RINGIO_NAME_MAX_LEN 32u

Maximum length of RingIO strings. ============================================================================.

============================================================================

Macro:: RINGIO_NAME_MAX_LEN

#define RingIOEntry RingIO_Entry

============================================================================

Deprecated:: The deprecated data structure RingIOEntry has been replaced with RingIOEntry

============================================================================

#define RingIORegion RingIO_Ctrl

============================================================================

Deprecated:: The deprecated data structure RingIORegion has been replaced with RingIO_Ctrl

============================================================================

#define RingIO_SendNotify RingIO_sendNotify

============================================================================

Deprecated:: The deprecated API RingIO_SendNotify has been replaced with RingIO_sendNotify

============================================================================

Typedef Documentation

typedef void* RingIO_Handle

typedef struct RingIO_ControlStruct_tag* RingIO_ControlHandle

typedef void* RingIO_BufPtr

typedef void* RingIO_NotifyParam

typedef Uint16 RingIO_NotifyMsg

typedef void(* RingIO_NotifyFunc)(RingIO_Handle handle, RingIO_NotifyParam param, RingIO_NotifyMsg msg)

typedef struct RingIO_Attrs_tag RingIO_Attrs

typedef struct RingIO_ControlStruct_tag RingIO_ControlStruct

typedef struct RingIO_Client_tag RingIO_Client

typedef struct RingIO_Entry_tag RingIO_Entry

typedef struct RingIO_Ctrl_tag RingIO_Ctrl

Enumeration Type Documentation

enum RingIO_OpenMode

Enumerator:

RINGIO_MODE_READ
RINGIO_MODE_WRITE
RINGIO_MODE_READ
RINGIO_MODE_WRITE

enum RingIO_TransportType

Enumerator:

RINGIO_TRANSPORT_DSP_DSP
RINGIO_TRANSPORT_GPP_DSP
RINGIO_TRANSPORT_DSP_DSP
RINGIO_TRANSPORT_GPP_DSP

enum RingIO_NotifyType

Enumerator:

RINGIO_NOTIFICATION_NONE
RINGIO_NOTIFICATION_ALWAYS
RINGIO_NOTIFICATION_ONCE
RINGIO_NOTIFICATION_HDWRFIFO_ALWAYS
RINGIO_NOTIFICATION_HDWRFIFO_ONCE
RINGIO_NOTIFICATION_NONE
RINGIO_NOTIFICATION_ALWAYS
RINGIO_NOTIFICATION_ONCE
RINGIO_NOTIFICATION_HDWRFIFO_ALWAYS
RINGIO_NOTIFICATION_HDWRFIFO_ONCE

ringiodefs.h File Reference

Data Structures

Defines

Typedefs

Enumerations

RingIO_Ctrl

Define Documentation

Typedef Documentation

Enumeration Type Documentation