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

/*************************************************************************/ /*!
@File
@Title          X Device Memory Management core internal
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@Description    Services internal interface for extended device memory management.
@License        Dual MIT/GPLv2

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

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

#ifndef DEVICEMEMX_H
#define DEVICEMEMX_H

#include "img_types.h"
#include "devicemem_typedefs.h"
#include "devicemem_utils.h"
#include "pdumpdefs.h"
#include "pvrsrv_error.h"
#include "pvrsrv_memallocflags.h"
#include "osfunc.h"

/* DevmemXAllocPhysical()
 *
 * Allocate physical device memory and return a physical
 * descriptor for it.
 */
PVRSRV_ERROR
DevmemXAllocPhysical(DEVMEM_CONTEXT *psCtx,
                    IMG_UINT32 uiNumPages,
                    IMG_UINT32 uiLog2PageSize,
                    DEVMEM_FLAGS_T uiFlags,
                    const IMG_CHAR *pszText,
                    DEVMEMX_PHYSDESC **ppsPhysDesc);

/* DevmemXReleasePhysical()
 *
 * Removes a physical device allocation if all references
 * to it are dropped, otherwise just decreases the refcount.
 */
void
DevmemXReleasePhysical(DEVMEMX_PHYSDESC *psPhysDesc);

/* DevmemAllocVirtual()
 *
 * Allocate and reserve a device virtual range and return
 * a virtual descriptor for it.
 */
PVRSRV_ERROR
DevmemXAllocVirtual(DEVMEM_HEAP* hHeap,
                   IMG_UINT32 uiNumPages,
                   DEVMEM_FLAGS_T uiFlags,
                   const IMG_CHAR *pszText,
                   DEVMEMX_VIRTDESC **ppsVirtDesc,
                   IMG_DEV_VIRTADDR *psVirtAddr);

/* DevmemXFreeVirtual()
 *
 * Removes a device virtual range if all mappings on it
 * have been removed.
 */
PVRSRV_ERROR
DevmemXFreeVirtual(DEVMEMX_VIRTDESC *psVirtDesc);

/* DevmemXMapVirtualRange()
 *
 * Map memory from a physical descriptor into a
 * virtual range.
 */
PVRSRV_ERROR
DevmemXMapVirtualRange(IMG_UINT32 ui32PageCount,
                      DEVMEMX_PHYSDESC *psPhysDesc,
                      IMG_UINT32 ui32PhysOffset,
                      DEVMEMX_VIRTDESC *psVirtDesc,
                      IMG_UINT32 ui32VirtOffset);

/* DevmemXUnmapVirtualRange()
 *
 * Unmap pages from a device virtual range.
 */
PVRSRV_ERROR
DevmemXUnmapVirtualRange(IMG_UINT32 ui32PageCount,
                        DEVMEMX_VIRTDESC *psVirtDesc,
                        IMG_UINT32 ui32VirtPgOffset);

/* DevmemXMapPhysicalToCPU()
 *
 * Map a full physical descriptor to CPU space.
 */
PVRSRV_ERROR
DevmemXMapPhysicalToCPU(DEVMEMX_PHYSDESC *psMemAllocPhys,
                       IMG_CPU_VIRTADDR *psVirtAddr);

/* DevmemXUnmapPhysicalToCPU()
 *
 * Remove the CPU mapping from the descriptor.
 */
PVRSRV_ERROR
DevmemXUnmapPhysicalToCPU(DEVMEMX_PHYSDESC *psMemAllocPhys);

/* DevmemXCreateDevmemMemDesc()
 *
 * DEPRICATED!
 * DO NOT USE IN PRODUCTION DRIVER!
 *
 * Create a devmem memdesc from a physical and
 * virtual descriptor.
 * Always destroy with DevmemFreePhysVirtMemDesc().
 */

PVRSRV_ERROR
DevmemXCreateDevmemMemDesc(DEVMEMX_VIRTDESC *psVirtDesc,
                            DEVMEM_MEMDESC **ppsMemDesc);

/* DevmemXFreeDevmemMemDesc()
 *
 * DEPRICATED!
 * DO NOT USE IN PRODUCTION DRIVER!
 *
 * Free the memdesc again. Has no impact on the underlying
 * physical and virtual descriptors.
 */
PVRSRV_ERROR
DevmemXFreeDevmemMemDesc(DEVMEM_MEMDESC *psMemDesc);

PVRSRV_ERROR
_DevmemXFlagCompatibilityCheck(IMG_UINT32 uiPhysFlags,
                              IMG_UINT32 uiVirtFlags);

PVRSRV_ERROR
_DevmemXPhysDescAlloc(DEVMEMX_PHYSDESC **ppsPhysDesc);

void
_DevmemXPhysDescInit(DEVMEMX_PHYSDESC *psPhysDesc,
                    IMG_HANDLE hPMR,
                    IMG_UINT32 uiNumPages,
                    IMG_UINT32 uiLog2PageSize,
                    PVRSRV_MEMALLOCFLAGS_T uiFlags,
                    IMG_HANDLE hBridge);

void
_DevmemXPhysDescFree(DEVMEMX_PHYSDESC *psPhysDesc);

#endif /* DEVICEMEMX_H */