drivers/gpu/drm/img-rogue/devicemem_heapcfg.h - chromiumos/third_party/kernel - Git at Google

 /**************************************************************************/ /*!
 @File
 @Title          Temporary Device Memory 2 stuff
 @Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
 @Description    Device memory management
 @License        Dual MIT/GPLv2

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

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 Alternatively, the contents of this file may be used under the terms of
 the GNU General Public License Version 2 ("GPL") in which case the provisions
 of GPL are applicable instead of those above.

 If you wish to allow use of your version of this file only under the terms of
 GPL, and not to allow others to use your version of this file under the terms
 of the MIT license, indicate your decision by deleting the provisions above
 and replace them with the notice and other provisions required by GPL as set
 out in the file called "GPL-COPYING" included in this distribution. If you do
 not delete the provisions above, a recipient may use your version of this file
 under the terms of either the MIT license or GPL.

 This License is also included in this distribution in the file called
 "MIT-COPYING".

 EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
 PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
 COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */ /***************************************************************************/

 #ifndef __DEVICEMEMHEAPCFG_H__
 #define __DEVICEMEMHEAPCFG_H__

 #include <powervr/mem_types.h>

 #include "img_types.h"
 #include "pvrsrv_error.h"


 /* FIXME: Find a better way of defining _PVRSRV_DEVICE_NODE_ */
 struct _PVRSRV_DEVICE_NODE_;
 /* FIXME: Find a better way of defining _CONNECTION_DATA_ */
 struct _CONNECTION_DATA_;


 /*
   A "heap config" is a blueprint to be used for initial setting up of
   heaps when a device memory context is created.

   We define a data structure to define this, but it's really down to
   the caller to populate it.  This is all expected to be in-kernel.
   We provide an API that client code can use to enquire about the
   blueprint, such that it may do the heap setup during the context
   creation call on behalf of the user */

 /* blueprint for a single heap */
 typedef struct _DEVMEM_HEAP_BLUEPRINT_
 {
 	/* Name of this heap - for debug purposes, and perhaps for lookup
 	by name? */
 	const IMG_CHAR *pszName;

 	/* Virtual address of the beginning of the heap.  This _must_ be a
 	multiple of the data page size for the heap.  It is
 	_recommended_ that it be coarser than that - especially, it
 	should begin on a boundary appropriate to the MMU for the
 	device.  For Rogue, this is a Page Directory boundary, or 1GB
 	(virtual address a multiple of 0x0040000000). */
 	IMG_DEV_VIRTADDR sHeapBaseAddr;

 	/* Length of the heap.  Given that the END address of the heap has
 	a similar restriction to that of the _beginning_ of the heap.
 	That is the heap length _must_ be a whole number of data pages.
 	Again, the recommendation is that it ends on a 1GB boundary.
 	Again, this is not essential, but we do know that (at the time
 	of writing) the current implementation of mmu_common.c is such
 	that no two heaps may share a page directory, thus the
 	remaining virtual space would be wasted if the length were not
 	a multiple of 1GB */
 	IMG_DEVMEM_SIZE_T uiHeapLength;

 	/* Data page size.  This is the page size that is going to get
 	programmed into the MMU, so it needs to be a valid one for the
 	device.  Importantly, the start address and length _must_ be
 	multiples of this page size.  Note that the page size is
 	specified as the log 2 relative to 1 byte (e.g. 12 indicates
 	4kB) */
 	IMG_UINT32 uiLog2DataPageSize;

 	/* Import alignment.  Force imports to this heap to be
 	aligned to at least this value */
 	IMG_UINT32 uiLog2ImportAlignment;

 	/* Tiled heaps have an optimum byte-stride, this can be derived from
 	the heap alignment and tiling mode. This is abstracted here such that
 	Log2ByteStride = Log2Alignment - Log2TilingStrideFactor */
 	IMG_UINT32 uiLog2TilingStrideFactor;
 } DEVMEM_HEAP_BLUEPRINT;

 /* entire named heap config */
 typedef struct _DEVMEM_HEAP_CONFIG_
 {
     /* Name of this heap config - for debug and maybe lookup */
     const IMG_CHAR *pszName;

     /* Number of heaps in this config */
     IMG_UINT32 uiNumHeaps;

     /* Array of individual heap blueprints as defined above */
     DEVMEM_HEAP_BLUEPRINT *psHeapBlueprintArray;
 } DEVMEM_HEAP_CONFIG;


 extern PVRSRV_ERROR
 HeapCfgHeapConfigCount(struct _CONNECTION_DATA_ * psConnection,
     const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
     IMG_UINT32 *puiNumHeapConfigsOut
 );

 extern PVRSRV_ERROR
 HeapCfgHeapCount(struct _CONNECTION_DATA_ * psConnection,
     const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
     IMG_UINT32 uiHeapConfigIndex,
     IMG_UINT32 *puiNumHeapsOut
 );

 extern PVRSRV_ERROR
 HeapCfgHeapConfigName(struct _CONNECTION_DATA_ * psConnection,
     const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
     IMG_UINT32 uiHeapConfigIndex,
     IMG_UINT32 uiHeapConfigNameBufSz,
     IMG_CHAR *pszHeapConfigNameOut
 );

 extern PVRSRV_ERROR
 HeapCfgHeapDetails(struct _CONNECTION_DATA_ * psConnection,
     const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
     IMG_UINT32 uiHeapConfigIndex,
     IMG_UINT32 uiHeapIndex,
     IMG_UINT32 uiHeapNameBufSz,
     IMG_CHAR *pszHeapNameOut,
     IMG_DEV_VIRTADDR *psDevVAddrBaseOut,
     IMG_DEVMEM_SIZE_T *puiHeapLengthOut,
     IMG_UINT32 *puiLog2DataPageSizeOut,
     IMG_UINT32 *puiLog2ImportAlignmentOut
 );

 #endif
	/*************************************************************************/ /!
	@File
	@Title Temporary Device Memory 2 stuff
	@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
	@Description Device memory management
	@License Dual MIT/GPLv2

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

	Permission is hereby granted, free of charge, to any person obtaining a copy
	of this software and associated documentation files (the "Software"), to deal
	in the Software without restriction, including without limitation the rights
	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	copies of the Software, and to permit persons to whom the Software is
	furnished to do so, subject to the following conditions:

	The above copyright notice and this permission notice shall be included in
	all copies or substantial portions of the Software.

	Alternatively, the contents of this file may be used under the terms of
	the GNU General Public License Version 2 ("GPL") in which case the provisions
	of GPL are applicable instead of those above.

	If you wish to allow use of your version of this file only under the terms of
	GPL, and not to allow others to use your version of this file under the terms
	of the MIT license, indicate your decision by deleting the provisions above
	and replace them with the notice and other provisions required by GPL as set
	out in the file called "GPL-COPYING" included in this distribution. If you do
	not delete the provisions above, a recipient may use your version of this file
	under the terms of either the MIT license or GPL.

	This License is also included in this distribution in the file called
	"MIT-COPYING".

	EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
	PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
	BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
	PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
	COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
	IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	/ /**************************************************************************/

	#ifndef __DEVICEMEMHEAPCFG_H__
	#define __DEVICEMEMHEAPCFG_H__

	#include <powervr/mem_types.h>

	#include "img_types.h"
	#include "pvrsrv_error.h"



	/* FIXME: Find a better way of defining _PVRSRV_DEVICE_NODE_ */
	struct _PVRSRV_DEVICE_NODE_;
	/* FIXME: Find a better way of defining _CONNECTION_DATA_ */
	struct _CONNECTION_DATA_;


	/*
	A "heap config" is a blueprint to be used for initial setting up of
	heaps when a device memory context is created.

	We define a data structure to define this, but it's really down to
	the caller to populate it. This is all expected to be in-kernel.
	We provide an API that client code can use to enquire about the
	blueprint, such that it may do the heap setup during the context
	creation call on behalf of the user */

	/* blueprint for a single heap */
	typedef struct _DEVMEM_HEAP_BLUEPRINT_
	{
	/* Name of this heap - for debug purposes, and perhaps for lookup
	by name? */
	const IMG_CHAR *pszName;

	/* Virtual address of the beginning of the heap. This _must_ be a
	multiple of the data page size for the heap. It is
	_recommended_ that it be coarser than that - especially, it
	should begin on a boundary appropriate to the MMU for the
	device. For Rogue, this is a Page Directory boundary, or 1GB
	(virtual address a multiple of 0x0040000000). */
	IMG_DEV_VIRTADDR sHeapBaseAddr;

	/* Length of the heap. Given that the END address of the heap has
	a similar restriction to that of the _beginning_ of the heap.
	That is the heap length _must_ be a whole number of data pages.
	Again, the recommendation is that it ends on a 1GB boundary.
	Again, this is not essential, but we do know that (at the time
	of writing) the current implementation of mmu_common.c is such
	that no two heaps may share a page directory, thus the
	remaining virtual space would be wasted if the length were not
	a multiple of 1GB */
	IMG_DEVMEM_SIZE_T uiHeapLength;

	/* Data page size. This is the page size that is going to get
	programmed into the MMU, so it needs to be a valid one for the
	device. Importantly, the start address and length _must_ be
	multiples of this page size. Note that the page size is
	specified as the log 2 relative to 1 byte (e.g. 12 indicates
	4kB) */
	IMG_UINT32 uiLog2DataPageSize;

	/* Import alignment. Force imports to this heap to be
	aligned to at least this value */
	IMG_UINT32 uiLog2ImportAlignment;

	/* Tiled heaps have an optimum byte-stride, this can be derived from
	the heap alignment and tiling mode. This is abstracted here such that
	Log2ByteStride = Log2Alignment - Log2TilingStrideFactor */
	IMG_UINT32 uiLog2TilingStrideFactor;
	} DEVMEM_HEAP_BLUEPRINT;

	/* entire named heap config */
	typedef struct _DEVMEM_HEAP_CONFIG_
	{
	/* Name of this heap config - for debug and maybe lookup */
	const IMG_CHAR *pszName;

	/* Number of heaps in this config */
	IMG_UINT32 uiNumHeaps;

	/* Array of individual heap blueprints as defined above */
	DEVMEM_HEAP_BLUEPRINT *psHeapBlueprintArray;
	} DEVMEM_HEAP_CONFIG;


	extern PVRSRV_ERROR
	HeapCfgHeapConfigCount(struct _CONNECTION_DATA_ * psConnection,
	const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
	IMG_UINT32 *puiNumHeapConfigsOut
	);

	extern PVRSRV_ERROR
	HeapCfgHeapCount(struct _CONNECTION_DATA_ * psConnection,
	const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
	IMG_UINT32 uiHeapConfigIndex,
	IMG_UINT32 *puiNumHeapsOut
	);

	extern PVRSRV_ERROR
	HeapCfgHeapConfigName(struct _CONNECTION_DATA_ * psConnection,
	const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
	IMG_UINT32 uiHeapConfigIndex,
	IMG_UINT32 uiHeapConfigNameBufSz,
	IMG_CHAR *pszHeapConfigNameOut
	);

	extern PVRSRV_ERROR
	HeapCfgHeapDetails(struct _CONNECTION_DATA_ * psConnection,
	const struct _PVRSRV_DEVICE_NODE_ *psDeviceNode,
	IMG_UINT32 uiHeapConfigIndex,
	IMG_UINT32 uiHeapIndex,
	IMG_UINT32 uiHeapNameBufSz,
	IMG_CHAR *pszHeapNameOut,
	IMG_DEV_VIRTADDR *psDevVAddrBaseOut,
	IMG_DEVMEM_SIZE_T *puiHeapLengthOut,
	IMG_UINT32 *puiLog2DataPageSizeOut,
	IMG_UINT32 *puiLog2ImportAlignmentOut
	);

	#endif