thead-kernel/drivers/gpu/drm/img-rogue/rgxbvnc.c

/*************************************************************************/ /*!
@File
@Title          BVNC handling specific routines
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@Description    Functions used for BNVC related work
@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.

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

#include "img_defs.h"
#include "rgxbvnc.h"
#define RGXBVNC_C
#include "rgx_bvnc_table_km.h"
#undef RGXBVNC_C
#include "oskm_apphint.h"
#include "pvrsrv.h"
#include "pdump_km.h"
#include "rgx_compat_bvnc.h"

#define RGXBVNC_BUFFER_SIZE (((PVRSRV_MAX_DEVICES)*(RGX_BVNC_STR_SIZE_MAX))+1)

/* This function searches the given array for a given search value */
static IMG_UINT64* _RGXSearchBVNCTable( IMG_UINT64 *pui64Array,
								IMG_UINT uiEnd,
								IMG_UINT64 ui64SearchValue,
								IMG_UINT uiRowCount)
{
	IMG_UINT uiStart = 0, index;
	IMG_UINT64 value, *pui64Ptr = NULL;

	while (uiStart < uiEnd)
	{
		index = (uiStart + uiEnd)/2;
		pui64Ptr = pui64Array + (index * uiRowCount);
		value = *(pui64Ptr);

		if (value == ui64SearchValue)
		{
			return pui64Ptr;
		}

		if (value > ui64SearchValue)
		{
			uiEnd = index;
		}else
		{
			uiStart = index + 1;
		}
	}
	return NULL;
}
#define RGX_SEARCH_BVNC_TABLE(t, b) (_RGXSearchBVNCTable((IMG_UINT64*)(t), \
                                ARRAY_SIZE(t), (b), \
                                sizeof((t)[0])/sizeof(IMG_UINT64)) )


#if defined(DEBUG)

#define PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, szShortName, Feature)															\
	if ( psDevInfo->sDevFeatureCfg.ui32FeaturesValues[RGX_FEATURE_##Feature##_IDX] != RGX_FEATURE_VALUE_DISABLED )			\
		{ PVR_LOG(("%s %d", szShortName, psDevInfo->sDevFeatureCfg.ui32FeaturesValues[RGX_FEATURE_##Feature##_IDX])); }		\
	else																\
		{ PVR_LOG(("%s N/A", szShortName)); }

static void _RGXBvncDumpParsedConfig(PVRSRV_DEVICE_NODE *psDeviceNode)
{
	PVRSRV_RGXDEV_INFO *psDevInfo = (PVRSRV_RGXDEV_INFO *)psDeviceNode->pvDevice;
	IMG_UINT64 ui64Mask = 0, ui32IdOrNameIdx = 1;

	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "NC:       ", NUM_CLUSTERS);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "CSF:      ", CDM_CONTROL_STREAM_FORMAT);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "FBCDCA:   ", FBCDC_ARCHITECTURE);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "MCMB:     ", META_COREMEM_BANKS);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "MCMS:     ", META_COREMEM_SIZE);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "MDMACnt:  ", META_DMA_CHANNEL_COUNT);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "NIIP:     ", NUM_ISP_IPP_PIPES);
#if defined(RGX_FEATURE_NUM_ISP_PER_SPU_MAX_VALUE_IDX)
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "NIPS:     ", NUM_ISP_PER_SPU);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "PPS:      ", PBE_PER_SPU);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "NSPU:     ", NUM_SPU);
#endif
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "PBW:      ", PHYS_BUS_WIDTH);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "STEArch:  ", SCALABLE_TE_ARCH);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "SVCEA:    ", SCALABLE_VCE);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "SLCBanks: ", SLC_BANKS);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "SLCCLS:   ", SLC_CACHE_LINE_SIZE_BITS);
	PVR_LOG(("SLCSize:   %d",  psDevInfo->sDevFeatureCfg.ui32SLCSizeInBytes));
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "VASB:     ", VIRTUAL_ADDRESS_SPACE_BITS);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "META:     ", META);
	PVR_LOG_DUMP_FEATURE_VALUE(psDevInfo, "NOSIDS:   ", NUM_OSIDS);

#if defined(FEATURE_NO_VALUES_NAMES_MAX_IDX)
	/* Dump the features with no values */
	ui64Mask = psDevInfo->sDevFeatureCfg.ui64Features;
	while (ui64Mask)
	{
		if (ui64Mask & 0x01)
		{
			if (ui32IdOrNameIdx <= FEATURE_NO_VALUES_NAMES_MAX_IDX)
			{
				PVR_LOG(("%s", gaszFeaturesNoValuesNames[ui32IdOrNameIdx - 1]));
			}
			else
			{
				PVR_DPF((PVR_DBG_WARNING,
				         "Feature with Mask doesn't exist: 0x%016" IMG_UINT64_FMTSPECx,
				         ((IMG_UINT64)1 << (ui32IdOrNameIdx - 1))));
			}
		}
		ui64Mask >>= 1;
		ui32IdOrNameIdx++;
	}
#endif

#if defined(ERNSBRNS_IDS_MAX_IDX)
	/* Dump the ERN and BRN flags for this core */
	ui64Mask = psDevInfo->sDevFeatureCfg.ui64ErnsBrns;
	ui32IdOrNameIdx = 1;

	while (ui64Mask)
	{
		if (ui64Mask & 0x1)
		{
			if (ui32IdOrNameIdx <= ERNSBRNS_IDS_MAX_IDX)
			{
				PVR_LOG(("ERN/BRN : %d", gaui64ErnsBrnsIDs[ui32IdOrNameIdx - 1]));
			}
			else
			{
				PVR_LOG(("Unknown ErnBrn bit: 0x%0" IMG_UINT64_FMTSPECx, ((IMG_UINT64)1 << (ui32IdOrNameIdx - 1))));
			}
		}
		ui64Mask >>= 1;
		ui32IdOrNameIdx++;
	}
#endif

}
#endif

static void _RGXBvncParseFeatureValues(PVRSRV_RGXDEV_INFO *psDevInfo, IMG_UINT64 *pui64Cfg)
{
	IMG_UINT32 ui32Index;

	/* Read the feature values for the runtime BVNC */
	for (ui32Index = 0; ui32Index < RGX_FEATURE_WITH_VALUES_MAX_IDX; ui32Index++)
	{
		IMG_UINT16 bitPosition = aui16FeaturesWithValuesBitPositions[ui32Index];
		IMG_UINT64 ui64PackedValues = pui64Cfg[2 + bitPosition / 64];
		IMG_UINT16 ui16ValueIndex = (ui64PackedValues & aui64FeaturesWithValuesBitMasks[ui32Index]) >> (bitPosition % 64);

		if (ui16ValueIndex < gaFeaturesValuesMaxIndexes[ui32Index])
		{
			if (gaFeaturesValues[ui32Index][ui16ValueIndex] == (IMG_UINT16)RGX_FEATURE_VALUE_DISABLED)
			{
				psDevInfo->sDevFeatureCfg.ui32FeaturesValues[ui32Index] = RGX_FEATURE_VALUE_DISABLED;
			}
			else
			{
				psDevInfo->sDevFeatureCfg.ui32FeaturesValues[ui32Index] = gaFeaturesValues[ui32Index][ui16ValueIndex];
			}
		}
		else
		{
			/* This case should never be reached */
			psDevInfo->sDevFeatureCfg.ui32FeaturesValues[ui32Index] = RGX_FEATURE_VALUE_INVALID;
			PVR_DPF((PVR_DBG_ERROR, "%s: Feature with index (%d) decoded wrong value index (%d)", __func__, ui32Index, ui16ValueIndex));
			PVR_ASSERT(ui16ValueIndex < gaFeaturesValuesMaxIndexes[ui32Index]);
		}
	}

#if defined(RGX_FEATURE_POWER_ISLAND_VERSION_MAX_VALUE_IDX)
	/* Code path for Volcanic */

	/* Get the max number of DMs */
	psDevInfo->sDevFeatureCfg.ui32MAXDMCount = RGXFWIF_DM_CDM+1;
	if (RGX_IS_FEATURE_VALUE_SUPPORTED(psDevInfo, RAY_TRACING_ARCH) &&
		RGX_GET_FEATURE_VALUE(psDevInfo, RAY_TRACING_ARCH) > 1)
	{
		psDevInfo->sDevFeatureCfg.ui32MAXDMCount = MAX(psDevInfo->sDevFeatureCfg.ui32MAXDMCount, RGXFWIF_DM_RAY+1);
	}
#if defined(SUPPORT_AGP)
	psDevInfo->sDevFeatureCfg.ui32MAXDMCount = MAX(psDevInfo->sDevFeatureCfg.ui32MAXDMCount, RGXFWIF_DM_GEOM2+1);
#endif

	/* Get the max number of dusts in the core */
	if (RGX_IS_FEATURE_VALUE_SUPPORTED(psDevInfo, NUM_CLUSTERS))
	{
		RGX_LAYER_PARAMS sParams;

		OSCachedMemSet(&sParams, 0, sizeof(RGX_LAYER_PARAMS));
		sParams.psDevInfo = psDevInfo;

		if (RGX_DEVICE_GET_FEATURE_VALUE(&sParams, POWER_ISLAND_VERSION) == 1)
		{
			psDevInfo->sDevFeatureCfg.ui32MAXPowUnitCount = MAX(1, (RGX_GET_FEATURE_VALUE(psDevInfo, NUM_CLUSTERS) / 2));
		}
		else if (RGX_DEVICE_GET_FEATURE_VALUE(&sParams, POWER_ISLAND_VERSION) == 2)
		{
			psDevInfo->sDevFeatureCfg.ui32MAXPowUnitCount = RGX_GET_FEATURE_VALUE(psDevInfo, NUM_CLUSTERS);
		}
		else
		{
			/* All volcanic cores support power islanding */
			psDevInfo->sDevFeatureCfg.ui32MAXPowUnitCount = RGX_FEATURE_VALUE_INVALID;
			PVR_DPF((PVR_DBG_ERROR, "%s: Power island feature version not found!", __func__));
			PVR_ASSERT(0);
		}
	}
	else
	{
		/* This case should never be reached as all cores have clusters */
		psDevInfo->sDevFeatureCfg.ui32MAXPowUnitCount = RGX_FEATURE_VALUE_INVALID;
		PVR_DPF((PVR_DBG_ERROR, "%s: Number of clusters feature value missing!", __func__));
		PVR_ASSERT(0);
	}
#else
	/* Code path for Rogue */

	if (RGX_IS_FEATURE_SUPPORTED(psDevInfo, MIPS))
	{
		psDevInfo->sDevFeatureCfg.ui32FeaturesValues[RGX_FEATURE_META_IDX] = RGX_FEATURE_VALUE_DISABLED;
	}

	/* Get the max number of dusts in the core */
	if (RGX_IS_FEATURE_VALUE_SUPPORTED(psDevInfo, NUM_CLUSTERS))
	{
		psDevInfo->sDevFeatureCfg.ui32MAXDustCount = MAX(1, (RGX_GET_FEATURE_VALUE(psDevInfo, NUM_CLUSTERS) / 2));
	}
	else
	{
		/* This case should never be reached as all cores have clusters */
		psDevInfo->sDevFeatureCfg.ui32MAXDustCount = RGX_FEATURE_VALUE_INVALID;
		PVR_DPF((PVR_DBG_ERROR, "%s: Number of clusters feature value missing!", __func__));
		PVR_ASSERT(0);
	}
#endif

	/* Transform the META coremem size info in bytes */
	if (RGX_IS_FEATURE_VALUE_SUPPORTED(psDevInfo, META_COREMEM_SIZE))
	{
		psDevInfo->sDevFeatureCfg.ui32FeaturesValues[RGX_FEATURE_META_COREMEM_SIZE_IDX] *= 1024;
	}
}

static void _RGXBvncAcquireAppHint(IMG_CHAR *pszBVNC, const IMG_UINT32 ui32RGXDevCount)
{
	const IMG_CHAR *pszAppHintDefault = PVRSRV_APPHINT_RGXBVNC;
	void *pvAppHintState = NULL;
	IMG_UINT32 ui32BVNCCount = 0;
	IMG_BOOL bRet;
	IMG_CHAR szBVNCAppHint[RGXBVNC_BUFFER_SIZE];
	IMG_CHAR *pszCurrentBVNC = szBVNCAppHint;
	szBVNCAppHint[0] = '\0';

	OSCreateKMAppHintState(&pvAppHintState);

	bRet = (IMG_BOOL)OSGetKMAppHintSTRING(APPHINT_NO_DEVICE,
						pvAppHintState,
						RGXBVNC,
						pszAppHintDefault,
						szBVNCAppHint,
						sizeof(szBVNCAppHint));

	OSFreeKMAppHintState(pvAppHintState);

	if (!bRet || (szBVNCAppHint[0] == '\0'))
	{
		return;
	}

	PVR_DPF((PVR_DBG_MESSAGE, "%s: BVNC module param list: %s",__func__, szBVNCAppHint));

	while (*pszCurrentBVNC != '\0')
	{
		IMG_CHAR *pszNext = pszCurrentBVNC;

		if (ui32BVNCCount >= PVRSRV_MAX_DEVICES)
		{
			break;
		}

		while (1)
		{
			if (*pszNext == ',')
			{
				pszNext[0] = '\0';
				pszNext++;
				break;
			} else if (*pszNext == '\0')
			{
				break;
			}
			pszNext++;
		}

		if (ui32BVNCCount == ui32RGXDevCount)
		{
			OSStringLCopy(pszBVNC, pszCurrentBVNC, RGX_BVNC_STR_SIZE_MAX);
			return;
		}

		ui32BVNCCount++;
		pszCurrentBVNC = pszNext;
	}

	PVR_DPF((PVR_DBG_ERROR, "%s: Given module parameters list is shorter than "
	"number of actual devices", __func__));

	/* If only one BVNC parameter is specified, the same is applied for all RGX
	 * devices detected */
	if (1 == ui32BVNCCount)
	{
		OSStringLCopy(pszBVNC, szBVNCAppHint, RGX_BVNC_STR_SIZE_MAX);
	}
}

/* Function that parses the BVNC List passed as module parameter */
static PVRSRV_ERROR _RGXBvncParseList(IMG_UINT32 *pB,
									  IMG_UINT32 *pV,
									  IMG_UINT32 *pN,
									  IMG_UINT32 *pC,
									  const IMG_UINT32 ui32RGXDevCount)
{
	unsigned int ui32ScanCount = 0;
	IMG_CHAR aszBVNCString[RGX_BVNC_STR_SIZE_MAX];

	aszBVNCString[0] = '\0';

	/* 4 components of a BVNC string is B, V, N & C */
#define RGX_BVNC_INFO_PARAMS (4)

	_RGXBvncAcquireAppHint(aszBVNCString, ui32RGXDevCount);

	if ('\0' == aszBVNCString[0])
	{
		return PVRSRV_ERROR_INVALID_BVNC_PARAMS;
	}

	/* Parse the given RGX_BVNC string */
	ui32ScanCount = OSVSScanf(aszBVNCString, RGX_BVNC_STR_FMTSPEC, pB, pV, pN, pC);
	if (RGX_BVNC_INFO_PARAMS != ui32ScanCount)
	{
		ui32ScanCount = OSVSScanf(aszBVNCString, RGX_BVNC_STRP_FMTSPEC, pB, pV, pN, pC);
	}
	if (RGX_BVNC_INFO_PARAMS != ui32ScanCount)
	{
		return PVRSRV_ERROR_INVALID_BVNC_PARAMS;
	}
	PVR_LOG(("BVNC module parameter honoured: %s", aszBVNCString));

	return PVRSRV_OK;
}

#if !defined(NO_HARDWARE)
/*
 * This function obtains the SLCSize from the physical device for GPUs which provide
 * this information. If the GPU does not provide support we return a value of 0 which will
 * result in the BVNC supplied definition being used to provide the SLCSize.
 * Must only be called from driver-live with hardware powered-on.
 */
static IMG_UINT32 _RGXBvncReadSLCSize(PVRSRV_DEVICE_NODE *psDeviceNode)
{
	PVRSRV_RGXDEV_INFO	*psDevInfo = psDeviceNode->pvDevice;
	IMG_UINT64 ui64SLCSize = 0ULL;

#if defined(RGX_CR_CORE_ID__PBVNC)
	/* Rogue hardware */
	if (RGX_IS_FEATURE_SUPPORTED(psDevInfo, SLC_SIZE_CONFIGURABLE))
	{
		ui64SLCSize = OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_SLC_SIZE_IN_KB);
		if (ui64SLCSize == 0ULL)
		{
			PVR_DPF((PVR_DBG_MESSAGE, "%s: Unexpected 0 SLC size. Using default", __func__));
		}
		else
		{
			PVR_DPF((PVR_DBG_MESSAGE, "%s: RGX_CR_SIZE_IN_KB = %u", __func__,
			        (IMG_UINT32) ui64SLCSize));
		}
	}
#else
	/* Volcanic hardware */
	if (RGX_IS_FEATURE_SUPPORTED(psDevInfo, SLC_SIZE_ADJUSTMENT))
	{
		ui64SLCSize = OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_SLC_STATUS2);
		ui64SLCSize &= ~RGX_CR_SLC_STATUS2_SLC_SIZE_IN_KB_CLRMSK;
		ui64SLCSize >>= RGX_CR_SLC_STATUS2_SLC_SIZE_IN_KB_SHIFT;

		if (ui64SLCSize == 0ULL)
		{
			PVR_DPF((PVR_DBG_MESSAGE, "%s: Unexpected 0 SLC size. Using default", __func__));
		}
		else
		{
			PVR_DPF((PVR_DBG_MESSAGE, "%s: SLC_SIZE_IN_KILOBYTES = %u", __func__,
			        (IMG_UINT32) ui64SLCSize));
		}
	}
#endif

	return (IMG_UINT32)ui64SLCSize * 1024U;
}
#endif /* !defined(NO_HARDWARE) */

/* This function detects the Rogue variant and configures the essential
 * config info associated with such a device.
 * The config info includes features, errata, etc
 */
PVRSRV_ERROR RGXBvncInitialiseConfiguration(PVRSRV_DEVICE_NODE *psDeviceNode)
{
	static IMG_UINT32 ui32RGXDevCnt = 0;
	PVRSRV_ERROR eError;
	PVRSRV_RGXDEV_INFO	*psDevInfo = psDeviceNode->pvDevice;
	IMG_UINT64 ui64BVNC=0;
	IMG_UINT32 B=0, V=0, N=0, C=0;
	IMG_UINT64 *pui64Cfg = NULL;
	IMG_UINT32 ui32Cores = 1U;
	IMG_UINT32 ui32SLCSize = 0;

	/* Check for load time RGX BVNC parameter */
	eError = _RGXBvncParseList(&B,&V,&N,&C, ui32RGXDevCnt);
	if (PVRSRV_OK == eError)
	{
		PVR_LOG(("Read BVNC " RGX_BVNC_STR_FMTSPEC
				" from driver load parameter", B, V, N, C));

		/* Extract the BVNC config from the Features table */
		ui64BVNC = BVNC_PACK(B,0,N,C);
		pui64Cfg = RGX_SEARCH_BVNC_TABLE(gaFeatures, ui64BVNC);
		PVR_LOG_IF_FALSE((pui64Cfg != NULL), "Driver parameter BVNC configuration not found!");
	}

	{
		void *pvAppHintState = NULL;
		const IMG_BOOL bAppHintDefault = PVRSRV_APPHINT_IGNOREHWREPORTEDBVNC;

		OSCreateKMAppHintState(&pvAppHintState);
		OSGetKMAppHintBOOL(APPHINT_NO_DEVICE,
							pvAppHintState,
							IgnoreHWReportedBVNC,
							&bAppHintDefault,
							&psDevInfo->bIgnoreHWReportedBVNC);
		OSFreeKMAppHintState(pvAppHintState);
	}

#if !defined(NO_HARDWARE)

	/* Try to detect the RGX BVNC from the HW device */
	if ((NULL == pui64Cfg) && !psDevInfo->bIgnoreHWReportedBVNC)
	{
		IMG_UINT64 ui32ID;
		IMG_BOOL bPowerDown = (psDeviceNode->eCurrentSysPowerState == PVRSRV_SYS_POWER_STATE_OFF);

		/* Power-up the device as required to read the registers */
		if (bPowerDown)
		{
			eError = PVRSRVSetSystemPowerState(psDeviceNode->psDevConfig, PVRSRV_SYS_POWER_STATE_ON);
			PVR_LOG_RETURN_IF_ERROR(eError, "PVRSRVSetSystemPowerState ON");
		}

#if defined(RGX_CR_CORE_ID__PBVNC)
		/* Core ID reading code for Rogue */

		/* Read the BVNC, in to new way first, if B not set, use old scheme */
		ui32ID = OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_CORE_ID__PBVNC);

		if (GET_B(ui32ID))
		{
			B = (ui32ID & ~RGX_CR_CORE_ID__PBVNC__BRANCH_ID_CLRMSK) >>
													RGX_CR_CORE_ID__PBVNC__BRANCH_ID_SHIFT;
			V = (ui32ID & ~RGX_CR_CORE_ID__PBVNC__VERSION_ID_CLRMSK) >>
													RGX_CR_CORE_ID__PBVNC__VERSION_ID_SHIFT;
			N = (ui32ID & ~RGX_CR_CORE_ID__PBVNC__NUMBER_OF_SCALABLE_UNITS_CLRMSK) >>
													RGX_CR_CORE_ID__PBVNC__NUMBER_OF_SCALABLE_UNITS_SHIFT;
			C = (ui32ID & ~RGX_CR_CORE_ID__PBVNC__CONFIG_ID_CLRMSK) >>
													RGX_CR_CORE_ID__PBVNC__CONFIG_ID_SHIFT;

		}
		else
		{
			IMG_UINT64 ui32CoreID, ui32CoreRev;
			ui32CoreRev = OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_CORE_REVISION);
			ui32CoreID = OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_CORE_ID);
			B = (ui32CoreRev & ~RGX_CR_CORE_REVISION_MAJOR_CLRMSK) >>
													RGX_CR_CORE_REVISION_MAJOR_SHIFT;
			V = (ui32CoreRev & ~RGX_CR_CORE_REVISION_MINOR_CLRMSK) >>
													RGX_CR_CORE_REVISION_MINOR_SHIFT;
			N = (ui32CoreID & ~RGX_CR_CORE_ID_CONFIG_N_CLRMSK) >>
													RGX_CR_CORE_ID_CONFIG_N_SHIFT;
			C = (ui32CoreID & ~RGX_CR_CORE_ID_CONFIG_C_CLRMSK) >>
													RGX_CR_CORE_ID_CONFIG_C_SHIFT;
		}
#else
		/* Core ID reading code for Volcanic */

		ui32ID = OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_CORE_ID);

		B = (ui32ID & ~RGX_CR_CORE_ID_BRANCH_ID_CLRMSK) >>
												RGX_CR_CORE_ID_BRANCH_ID_SHIFT;
		V = (ui32ID & ~RGX_CR_CORE_ID_VERSION_ID_CLRMSK) >>
												RGX_CR_CORE_ID_VERSION_ID_SHIFT;
		N = (ui32ID & ~RGX_CR_CORE_ID_NUMBER_OF_SCALABLE_UNITS_CLRMSK) >>
												RGX_CR_CORE_ID_NUMBER_OF_SCALABLE_UNITS_SHIFT;
		C = (ui32ID & ~RGX_CR_CORE_ID_CONFIG_ID_CLRMSK) >>
												RGX_CR_CORE_ID_CONFIG_ID_SHIFT;
#endif

		PVR_LOG(("Read BVNC " RGX_BVNC_STR_FMTSPEC
				" from HW device registers", B, V, N, C));

		if (!PVRSRV_VZ_MODE_IS(GUEST))
		{
			/* Read the number of cores in the system for newer BVNC (Branch ID > 20) */
			if (B > 20)
			{
				ui32Cores = OSReadHWReg32(psDevInfo->pvRegsBaseKM, RGX_CR_MULTICORE_SYSTEM);
			}
		}

		/* Obtain the SLC size from the device */
		ui32SLCSize = _RGXBvncReadSLCSize(psDeviceNode);
		PVR_DPF((PVR_DBG_MESSAGE, "%s: SLC Size reported as %u", __func__, ui32SLCSize));

		if (bPowerDown)
		{
			eError = PVRSRVSetSystemPowerState(psDeviceNode->psDevConfig, PVRSRV_SYS_POWER_STATE_OFF);
			PVR_LOG_RETURN_IF_ERROR(eError, "PVRSRVSetSystemPowerState OFF");
		}

		/* Extract the BVNC config from the Features table */
		ui64BVNC = BVNC_PACK(B,0,N,C);
		if (ui64BVNC != 0)
		{
			pui64Cfg = RGX_SEARCH_BVNC_TABLE(gaFeatures, ui64BVNC);
			PVR_LOG_IF_FALSE((pui64Cfg != NULL), "HW device BVNC configuration not found!");
		}
		else if (!PVRSRV_VZ_MODE_IS(GUEST))
		{
			/*
			 * On host OS we should not get here as CORE_ID should not be zero, so flag an error.
			 * On older cores, guest OS only has CORE_ID if defined(RGX_FEATURE_COREID_PER_OS)
			 */
			PVR_LOG_ERROR(PVRSRV_ERROR_DEVICE_REGISTER_FAILED, "CORE_ID register returns zero. Unknown BVNC");
		}
	}
#endif

#if defined(RGX_BVNC_KM_B) && defined(RGX_BVNC_KM_N) && defined(RGX_BVNC_KM_C)
	if (NULL == pui64Cfg)
	{
		/* We reach here if the HW is not present,
		 * or we are running in a guest OS with no COREID_PER_OS feature,
		 * or HW is unstable during register read giving invalid values,
		 * or runtime detection has been disabled - fall back to compile time BVNC
		 */
		B = RGX_BVNC_KM_B;
		N = RGX_BVNC_KM_N;
		C = RGX_BVNC_KM_C;
		{
			IMG_UINT32	ui32ScanCount = 0;
			ui32ScanCount = OSVSScanf(RGX_BVNC_KM_V_ST, "%u", &V);
			if (1 != ui32ScanCount)
			{
				ui32ScanCount = OSVSScanf(RGX_BVNC_KM_V_ST, "%up", &V);
				if (1 != ui32ScanCount)
				{
					V = 0;
				}
			}
		}
		PVR_LOG(("Reverting to compile time BVNC %s", RGX_BVNC_KM));

		/* Extract the BVNC config from the Features table */
		ui64BVNC = BVNC_PACK(B,0,N,C);
		pui64Cfg = RGX_SEARCH_BVNC_TABLE(gaFeatures, ui64BVNC);
		PVR_LOG_IF_FALSE((pui64Cfg != NULL), "Compile time BVNC configuration not found!");
	}
#endif /* defined(RGX_BVNC) */

	/* Have we failed to identify the BVNC to use? */
	if (NULL == pui64Cfg)
	{
		PVR_DPF((PVR_DBG_ERROR, "%s: BVNC Detection and feature lookup failed. "
		    "Unsupported BVNC: 0x%016" IMG_UINT64_FMTSPECx, __func__, ui64BVNC));
		return PVRSRV_ERROR_BVNC_UNSUPPORTED;
	}

	PVR_DPF((PVR_DBG_MESSAGE, "%s: BVNC Feature found config: 0x%016"
	    IMG_UINT64_FMTSPECx " 0x%016" IMG_UINT64_FMTSPECx " 0x%016"
	    IMG_UINT64_FMTSPECx " 0x%016" IMG_UINT64_FMTSPECx "\n", __func__,
	    pui64Cfg[0], pui64Cfg[1], pui64Cfg[2], pui64Cfg[3]));

	/* Parsing feature config depends on available features on the core
	 * hence this parsing should always follow the above feature assignment */
	psDevInfo->sDevFeatureCfg.ui64Features = pui64Cfg[1];
	_RGXBvncParseFeatureValues(psDevInfo, pui64Cfg);

	/* Add 'V' to the packed BVNC value to get the BVNC ERN and BRN config. */
	ui64BVNC = BVNC_PACK(B,V,N,C);
	pui64Cfg = RGX_SEARCH_BVNC_TABLE(gaErnsBrns, ui64BVNC);
	if (NULL == pui64Cfg)
	{
		PVR_DPF((PVR_DBG_ERROR, "%s: BVNC ERN/BRN lookup failed. "
		    "Unsupported BVNC: 0x%016" IMG_UINT64_FMTSPECx, __func__, ui64BVNC));
		psDevInfo->sDevFeatureCfg.ui64ErnsBrns = 0;
		return PVRSRV_ERROR_BVNC_UNSUPPORTED;
	}

	PVR_DPF((PVR_DBG_MESSAGE, "%s: BVNC ERN/BRN Cfg: 0x%016" IMG_UINT64_FMTSPECx
	    " 0x%016" IMG_UINT64_FMTSPECx, __func__, *pui64Cfg, pui64Cfg[1]));
	psDevInfo->sDevFeatureCfg.ui64ErnsBrns = pui64Cfg[1];

	psDevInfo->sDevFeatureCfg.ui32B = B;
	psDevInfo->sDevFeatureCfg.ui32V = V;
	psDevInfo->sDevFeatureCfg.ui32N = N;
	psDevInfo->sDevFeatureCfg.ui32C = C;


	/*
	 * Store the SLCSize in the device info field. If 0 it means the device uses the BVNC
	 * values so grab them here as we've already populated the internal structures.
	 */
	if (ui32SLCSize == 0U)
	{
		ui32SLCSize = RGX_GET_FEATURE_VALUE(psDevInfo, SLC_SIZE_IN_KILOBYTES) * 1024U;

		/* Verify that we have a valid value returned from the BVNC */
		PVR_ASSERT(ui32SLCSize != 0U);
	}
	psDevInfo->sDevFeatureCfg.ui32SLCSizeInBytes = ui32SLCSize;

	/* Message to confirm configuration look up was a success */
	if (RGX_IS_FEATURE_SUPPORTED(psDevInfo, GPU_MULTICORE_SUPPORT))
	{
#if defined(NO_HARDWARE)
		{
			PVR_UNREFERENCED_PARAMETER(ui32Cores);
			PVR_LOG(("RGX Device registered with BVNC " RGX_BVNC_STR_FMTSPEC,
					B, V, N, C));
		}
#else
		{
			PVR_LOG(("RGX Device registered BVNC " RGX_BVNC_STR_FMTSPEC
					" with %u %s in the system", B ,V ,N ,C, ui32Cores ,
					((ui32Cores == 1U)?"core":"cores")));
		}
#endif
	}
	else
	{
		PVR_LOG(("RGX Device registered with BVNC " RGX_BVNC_STR_FMTSPEC,
					B, V, N, C));
	}

	ui32RGXDevCnt++;

#if defined(DEBUG)
	_RGXBvncDumpParsedConfig(psDeviceNode);
#endif
	return PVRSRV_OK;
}

/*
 * This function checks if a particular feature is available on the given rgx device */
IMG_BOOL RGXBvncCheckFeatureSupported(PVRSRV_DEVICE_NODE *psDeviceNode, IMG_UINT64 ui64FeatureMask)
{
	PVRSRV_RGXDEV_INFO	*psDevInfo = psDeviceNode->pvDevice;

	if (psDevInfo->sDevFeatureCfg.ui64Features & ui64FeatureMask)
	{
		return IMG_TRUE;
	}
	return IMG_FALSE;
}

/*
 * This function returns the value of a feature on the given rgx device */
IMG_INT32 RGXBvncGetSupportedFeatureValue(PVRSRV_DEVICE_NODE *psDeviceNode, RGX_FEATURE_WITH_VALUE_INDEX eFeatureIndex)
{
	PVRSRV_RGXDEV_INFO	*psDevInfo = psDeviceNode->pvDevice;

	if (eFeatureIndex >= RGX_FEATURE_WITH_VALUES_MAX_IDX)
	{
		return -1;
	}

	if (psDevInfo->sDevFeatureCfg.ui32FeaturesValues[eFeatureIndex] == RGX_FEATURE_VALUE_DISABLED)
	{
		return -1;
	}

	return psDevInfo->sDevFeatureCfg.ui32FeaturesValues[eFeatureIndex];
}

/**************************************************************************/ /*!
@Function       RGXVerifyBVNC
@Description    Checks that the device's BVNC registers have the correct values.
@Input          psDeviceNode		Device node
@Return         PVRSRV_ERROR
*/ /***************************************************************************/
#define NUM_RGX_CORE_IDS    8
PVRSRV_ERROR RGXVerifyBVNC(PVRSRV_DEVICE_NODE *psDeviceNode, IMG_UINT64 ui64GivenBVNC, IMG_UINT64 ui64CoreIdMask)
{
	PVRSRV_RGXDEV_INFO *psDevInfo;
	PVRSRV_ERROR eError = PVRSRV_OK;
	IMG_UINT64 ui64MatchBVNC;
	IMG_UINT32 i;

	PVR_ASSERT(psDeviceNode != NULL);
	PVR_ASSERT(psDeviceNode->pvDevice != NULL);

	/* The device info */
	psDevInfo = psDeviceNode->pvDevice;

	PDUMPCOMMENT(psDeviceNode, "PDUMP VERIFY CORE_ID registers for all OSIDs\n");

	/* construct the value to match against */
	if ((ui64GivenBVNC | ui64CoreIdMask) == 0) /* both zero means use configured DDK value */
	{
		ui64MatchBVNC = rgx_bvnc_pack(psDevInfo->sDevFeatureCfg.ui32B,
									psDevInfo->sDevFeatureCfg.ui32V,
									psDevInfo->sDevFeatureCfg.ui32N,
									psDevInfo->sDevFeatureCfg.ui32C);
	}
	else
	{
		/* use the value in CORE_ID for any zero elements in the BVNC */
		ui64MatchBVNC = (ui64GivenBVNC & ~ui64CoreIdMask) | (OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_CORE_ID) & ui64CoreIdMask);
	}
	PVR_LOG(("matchBVNC %d.%d.%d.%d",
	        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_B) & 0xffff),
	        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_V) & 0xffff),
	        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_N) & 0xffff),
	        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_C) & 0xffff)));

	/* read in all the CORE_ID registers */
	for (i = 0; i < NUM_RGX_CORE_IDS; ++i)
	{
#if !defined(NO_HARDWARE)
		IMG_UINT64 ui64BVNC = OSReadHWReg64(psDevInfo->pvRegsBaseKM, RGX_CR_CORE_ID + (i << 16));

		PVR_LOG(("CORE_ID%d returned %d.%d.%d.%d", i,
		        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_B) & 0xffff),
		        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_V) & 0xffff),
		        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_N) & 0xffff),
		        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_C) & 0xffff)));

		if (ui64BVNC != ui64MatchBVNC)
		{
			eError = PVRSRV_ERROR_BVNC_MISMATCH;
			PVR_DPF((PVR_DBG_ERROR, "%s: Invalid CORE_ID%d %d.%d.%d.%d, Expected %d.%d.%d.%d", __func__, i,
			        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_B) & 0xffff),
			        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_V) & 0xffff),
			        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_N) & 0xffff),
			        (int) ((ui64BVNC >> RGX_BVNC_PACK_SHIFT_C) & 0xffff),
			        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_B) & 0xffff),
			        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_V) & 0xffff),
			        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_N) & 0xffff),
			        (int) ((ui64MatchBVNC >> RGX_BVNC_PACK_SHIFT_C) & 0xffff)));
			break;
		}
#endif

#if defined(SUPPORT_VALIDATION) && defined(NO_HARDWARE) && defined(PDUMP)
		/* check upper DWORD */
		eError = PDUMPREGPOL(psDeviceNode, RGX_PDUMPREG_NAME,
		                     (RGX_CR_CORE_ID + 4) + (i << 16),
		                     (IMG_UINT32)(ui64MatchBVNC >> 32),
		                     0xFFFFFFFF,
		                     PDUMP_FLAGS_CONTINUOUS,
		                     PDUMP_POLL_OPERATOR_EQUAL);
		if (eError == PVRSRV_OK)
		{
			/* check lower DWORD */
			eError = PDUMPREGPOL(psDeviceNode, RGX_PDUMPREG_NAME,
			                     RGX_CR_CORE_ID + (i << 16),
			                     (IMG_UINT32)(ui64MatchBVNC & 0xFFFFFFFF),
			                     0xFFFFFFFF,
			                     PDUMP_FLAGS_CONTINUOUS,
			                     PDUMP_POLL_OPERATOR_EQUAL);
		}
#endif
	}

	return eError;
}