drivers/gpu/drm/img-rogue/sync_checkpoint_internal.h

/*************************************************************************/ /*!
@File
@Title          Services internal synchronisation checkpoint interface header
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@Description    Defines the internal server interface for services
                synchronisation checkpoints.
@License        Dual MIT/GPLv2

The contents of this file are subject to the MIT license as set out below.

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*/ /**************************************************************************/

#ifndef __SYNC_CHECKPOINT__
#define __SYNC_CHECKPOINT__

#include "img_types.h"
#include "sync_checkpoint_internal_fw.h"
#include "sync_checkpoint.h"
#include "ra.h"
#include "dllist.h"
#include "lock.h"
#include "devicemem.h"

typedef struct _PVRSRV_DEVICE_NODE_ PVRSRV_DEVICE_NODE;

#if defined(PVRSRV_ENABLE_FULL_SYNC_TRACKING)
struct SYNC_CHECKPOINT_RECORD;
#endif

/*
	Private structures
*/
#define SYNC_CHECKPOINT_NAME_SIZE	SYNC_CHECKPOINT_MAX_CLASS_NAME_LEN

typedef struct _SYNC_CHECKPOINT_CONTEXT_
{
	PVRSRV_DEVICE_NODE     *psDevNode;
	IMG_CHAR               azName[SYNC_CHECKPOINT_NAME_SIZE];     /*!< Name of the RA */
	RA_ARENA               *psSubAllocRA;                         /*!< RA context */
	IMG_CHAR               azSpanName[SYNC_CHECKPOINT_NAME_SIZE]; /*!< Name of the span RA */
	RA_ARENA               *psSpanRA;                             /*!< RA used for span management of SubAllocRA */
	ATOMIC_T               hRefCount;                             /*!< Ref count for this context */
	ATOMIC_T               hCheckpointCount;                      /*!< Checkpoint count for this context */
	POS_LOCK               hCheckpointListLock;                   /*!< Checkpoint list lock */
	DLLIST_NODE            sCheckpointList;                       /*!< List of checkpoints created on this context */
	IMG_HANDLE             hCheckpointNotify;                     /*!< Handle for debug notifier callback */
#if defined(PVRSRV_ENABLE_FULL_SYNC_TRACKING)
	POS_LOCK               hCheckpointRecordLock;
	DLLIST_NODE            sCheckpointRecordList;
	struct SYNC_CHECKPOINT_RECORD *apsCheckpointRecordsFreed[PVRSRV_FULL_SYNC_TRACKING_HISTORY_LEN];
	IMG_UINT32             uiCheckpointRecordFreeIdx;
	IMG_HANDLE             hCheckpointRecordNotify;
#endif
} _SYNC_CHECKPOINT_CONTEXT;

typedef struct _SYNC_CHECKPOINT_BLOCK_
{
	ATOMIC_T                  hRefCount;                  /*!< Ref count for this sync block */
	_SYNC_CHECKPOINT_CONTEXT  *psContext;                 /*!< Our copy of the services connection */
	PVRSRV_DEVICE_NODE        *psDevNode;
	IMG_UINT32                ui32SyncBlockSize;          /*!< Size of the sync checkpoint block */
	IMG_UINT32                ui32FirmwareAddr;           /*!< Firmware address */
	DEVMEM_MEMDESC            *hMemDesc;                  /*!< DevMem allocation for block */
	volatile IMG_UINT32       *pui32LinAddr;              /*!< Server-code CPU mapping */
	IMG_UINT64                uiSpanBase;                 /*!< Base of this import (FW DevMem) in the span RA */
	DLLIST_NODE               sListNode;                  /*!< List node for the sync chkpt block list */
} SYNC_CHECKPOINT_BLOCK;

typedef struct SYNC_CHECKPOINT_RECORD* PSYNC_CHECKPOINT_RECORD_HANDLE;

typedef struct _SYNC_CHECKPOINT_
{
	/* A sync checkpoint is assigned a unique ID, to avoid any confusion should
	 * the same memory be re-used later for a different checkpoint
	 */
	IMG_UINT32                      ui32UID;                /*!< Unique ID assigned to sync checkpoint (to distinguish checkpoints if memory is re-used)*/
	ATOMIC_T                        hRefCount;              /*!< Ref count for this sync */
	ATOMIC_T                        hEnqueuedCCBCount;      /*!< Num times sync has been put in CCBs */
	SYNC_CHECKPOINT_BLOCK           *psSyncCheckpointBlock; /*!< Synchronisation block this checkpoint is allocated on */
	IMG_UINT64                      uiSpanAddr;             /*!< Span address of the sync */
	volatile _SYNC_CHECKPOINT_FW_OBJ *psSyncCheckpointFwObj; /*!< CPU view of the data held in the sync block */
	IMG_CHAR                        azName[SYNC_CHECKPOINT_NAME_SIZE]; /*!< Name of the checkpoint */
#if defined(PVRSRV_ENABLE_FULL_SYNC_TRACKING)
	PSYNC_CHECKPOINT_RECORD_HANDLE  hRecord;                /*!< Sync record handle */
#endif
	DLLIST_NODE                     sListNode;              /*!< List node for the sync chkpt list */
} _SYNC_CHECKPOINT;

/*************************************************************************/ /*!
@Function       SyncCheckpointGetFirmwareAddr

@Description    .

@Input          psSyncCheckpoint        Synchronisation checkpoint to get
                                        the firmware address of

@Return         None

*/
/*****************************************************************************/
IMG_UINT32
SyncCheckpointGetFirmwareAddr(PSYNC_CHECKPOINT psSyncCheckpoint);

/*************************************************************************/ /*!
@Function       SyncCheckpointCCBEnqueued

@Description    Increment the CCB enqueued reference count for a
                synchronisation checkpoint. This indicates how many FW
                operations (checks/update) have been placed into CCBs for the
                sync checkpoint.
                When the FW services these operation, it increments its own
                reference count. When these two values are equal, we know
                there are not outstanding FW operating for the checkpoint
                in any CCB.

@Input          psSyncCheckpoint        Synchronisation checkpoint for which
                                        to increment the enqueued reference
                                        count

@Return         None

*/
/*****************************************************************************/
void
SyncCheckpointCCBEnqueued(PSYNC_CHECKPOINT psSyncCheckpoint);

#endif	/* __SYNC_CHECKPOINT__ */