/*************************************************************************
* @File
* @Title          System Configuration
* @Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
* @Description    System Configuration functions
* @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
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
**************************************************************************/

#include "interrupt_support.h"
#include "pvrsrv_device.h"
#include "syscommon.h"
#include "sysconfig.h"
#include "physheap.h"
#if defined(SUPPORT_ION)
#include "ion_support.h"
#endif
#include "mtk_mfgsys.h"

#if defined(MTK_CONFIG_OF) && defined(CONFIG_OF)
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/platform_device.h>

struct platform_device *gpsPVRCfgDev;
#endif

#define RGX_CR_ISP_GRIDOFFSET   (0x0FA0U)

static RGX_TIMING_INFORMATION   gsRGXTimingInfo;
static RGX_DATA                 gsRGXData;
static PVRSRV_DEVICE_CONFIG     gsDevices[1];

static PHYS_HEAP_FUNCTIONS      gsPhysHeapFuncs;
static PHYS_HEAP_CONFIG         gsPhysHeapConfig;

#if  defined(SUPPORT_PDVFS)
/* Dummy DVFS configuration used purely for testing purposes */
static const IMG_OPP asOPPTable[] = {
	{ 100000, 253500000},
	{ 100000, 338000000},
	{ 100000, 390000000},
	{ 112500, 546000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
	{ 112500, 676000000},
};

#define LEVEL_COUNT (sizeof(asOPPTable) / sizeof(IMG_OPP))
#endif


/* CPU to Device physcial address translation */
static void UMAPhysHeapCpuPAddrToDevPAddr(IMG_HANDLE hPrivData,
				   IMG_UINT32 ui32NumOfAddr,
				   IMG_DEV_PHYADDR *psDevPAddr,
				   IMG_CPU_PHYADDR *psCpuPAddr)
{
	PVR_UNREFERENCED_PARAMETER(hPrivData);

	/* Optimise common case */
	psDevPAddr[0].uiAddr = psCpuPAddr[0].uiAddr;
	if (ui32NumOfAddr > 1) {
		IMG_UINT32 ui32Idx;

		for (ui32Idx = 1; ui32Idx < ui32NumOfAddr; ++ui32Idx)
			psDevPAddr[ui32Idx].uiAddr = psCpuPAddr[ui32Idx].uiAddr;
	}
}

/* Device to CPU physcial address translation */
static void UMAPhysHeapDevPAddrToCpuPAddr(IMG_HANDLE hPrivData,
				   IMG_UINT32 ui32NumOfAddr,
				   IMG_CPU_PHYADDR *psCpuPAddr,
				   IMG_DEV_PHYADDR *psDevPAddr)
{
	PVR_UNREFERENCED_PARAMETER(hPrivData);

	/* Optimise common case */
	psCpuPAddr[0].uiAddr = psDevPAddr[0].uiAddr;
	if (ui32NumOfAddr > 1) {
		IMG_UINT32 ui32Idx;

		for (ui32Idx = 1; ui32Idx < ui32NumOfAddr; ++ui32Idx)
			psCpuPAddr[ui32Idx].uiAddr = psDevPAddr[ui32Idx].uiAddr;
	}
}

#if defined(MTK_CONFIG_OF) && defined(CONFIG_OF)
static int g32SysIrq = -1;
int MTKSysGetIRQ(void)
{
	return g32SysIrq;
}
#endif

/* SysCreateConfigData */
static PHYS_HEAP_REGION gsHeapRegionsLocal[] = {
	/* sStartAddr, sCardBase, uiSize */
	{ { 0 }, { 0 }, 0, },
};

PVRSRV_ERROR SysDevInit(void *pvOSDevice, PVRSRV_DEVICE_CONFIG **ppsDevConfig)
{
	PVRSRV_ERROR err = PVRSRV_OK;

	gsPhysHeapFuncs.pfnCpuPAddrToDevPAddr = UMAPhysHeapCpuPAddrToDevPAddr;
	gsPhysHeapFuncs.pfnDevPAddrToCpuPAddr = UMAPhysHeapDevPAddrToCpuPAddr;

	gsPhysHeapConfig.ui32PhysHeapID = 0;
	gsPhysHeapConfig.pszPDumpMemspaceName = "SYSMEM";
	gsPhysHeapConfig.eType = PHYS_HEAP_TYPE_UMA;
	gsPhysHeapConfig.psMemFuncs = &gsPhysHeapFuncs;
	gsPhysHeapConfig.hPrivData = (IMG_HANDLE)&gsDevices[0];

	gsPhysHeapConfig.pasRegions = &gsHeapRegionsLocal[0];

	gsDevices[0].pvOSDevice = pvOSDevice;
	gsDevices[0].pasPhysHeaps = &gsPhysHeapConfig;
	gsDevices[0].ui32PhysHeapCount = sizeof(gsPhysHeapConfig) / sizeof(PHYS_HEAP_CONFIG);

	gsDevices[0].eBIFTilingMode = RGXFWIF_BIFTILINGMODE_256x16;
	gsDevices[0].pui32BIFTilingHeapConfigs = gauiBIFTilingHeapXStrides;
	gsDevices[0].ui32BIFTilingHeapCount = IMG_ARR_NUM_ELEMS(gauiBIFTilingHeapXStrides);

	/* Setup RGX specific timing data */
	gsRGXTimingInfo.ui32CoreClockSpeed = RGX_HW_CORE_CLOCK_SPEED;

#if MTK_PM_SUPPORT
	gsRGXTimingInfo.bEnableActivePM = true;
	gsRGXTimingInfo.ui32ActivePMLatencyms = SYS_RGX_ACTIVE_POWER_LATENCY_MS,
#else
	gsRGXTimingInfo.bEnableActivePM = false;
#endif

	/* define HW APM */
#if defined(MTK_USE_HW_APM)
	gsRGXTimingInfo.bEnableRDPowIsland = true;
#else
	gsRGXTimingInfo.bEnableRDPowIsland = false;
#endif

	/* Setup RGX specific data */
	gsRGXData.psRGXTimingInfo = &gsRGXTimingInfo;

	/* Setup RGX device */
	gsDevices[0].pszName = "RGX";
	gsDevices[0].pszVersion = NULL;

	/* Device setup information */
#if defined(MTK_CONFIG_OF) && defined(CONFIG_OF)
	/* MTK: using device tree */
	{
		struct resource *irq_res;
		struct resource *reg_res;

		gpsPVRCfgDev = to_platform_device((struct device *)pvOSDevice);
		irq_res = platform_get_resource(gpsPVRCfgDev, IORESOURCE_IRQ, 0);

		if (irq_res) {
			gsDevices[0].ui32IRQ = irq_res->start;
			g32SysIrq = irq_res->start;

			PVR_LOG(("irq_res = 0x%x", (int)irq_res->start));
		} else {
			PVR_DPF((PVR_DBG_ERROR, "irq_res = NULL!"));
			return PVRSRV_ERROR_INIT_FAILURE;
		}

		reg_res = platform_get_resource(gpsPVRCfgDev, IORESOURCE_MEM, 0);

		if (reg_res) {
			gsDevices[0].sRegsCpuPBase.uiAddr = reg_res->start;
			gsDevices[0].ui32RegsSize = resource_size(reg_res);

			PVR_LOG(("reg_res = 0x%x, 0x%x", (int)reg_res->start,
									(int)resource_size(reg_res)));
		} else {
			PVR_DPF((PVR_DBG_ERROR, "reg_res = NULL!"));
			return PVRSRV_ERROR_INIT_FAILURE;
		}
	}
#else
	gsDevices[0].sRegsCpuPBase.uiAddr = SYS_MTK_RGX_REGS_SYS_PHYS_BASE;
	gsDevices[0].ui32RegsSize = SYS_MTK_RGX_REGS_SIZE;
	gsDevices[0].ui32IRQ = SYS_MTK_RGX_IRQ;
#endif

	/* Power management on HW system */
	gsDevices[0].pfnPrePowerState = MTKDevPrePowerState;
	gsDevices[0].pfnPostPowerState = MTKDevPostPowerState;

	/* Clock frequency */
	gsDevices[0].pfnClockFreqGet = NULL;

	gsDevices[0].hDevData = &gsRGXData;
	gsDevices[0].eCacheSnoopingMode = PVRSRV_DEVICE_SNOOP_NONE;

#if defined(CONFIG_MACH_MT6739)
	gsDevices[0].pfnSysDevFeatureDepInit = NULL;
#endif

#if defined(SUPPORT_PDVFS)
	/* Dummy DVFS configuration used purely for testing purposes */
	gsDevices[0].sDVFS.sDVFSDeviceCfg.pasOPPTable = asOPPTable;
	gsDevices[0].sDVFS.sDVFSDeviceCfg.ui32OPPTableSize = LEVEL_COUNT;
#endif

	/* Setup other system specific stuff */
#if defined(SUPPORT_ION)
	IonInit(NULL);
#endif

	gsDevices[0].pvOSDevice = pvOSDevice;
	*ppsDevConfig = &gsDevices[0];

	MTKRGXDeviceInit(gsDevices);
	return err;
}

void SysDevDeInit(PVRSRV_DEVICE_CONFIG *psDevConfig)
{
#if defined(SUPPORT_ION)
	IonDeinit();
#endif

	MTKRGXDeviceDeInit(gsDevices);
	psDevConfig->pvOSDevice = NULL;
}

PVRSRV_ERROR SysInstallDeviceLISR(IMG_HANDLE hSysData,
				  IMG_UINT32 ui32IRQ,
				  const IMG_CHAR *pszName,
				  PFN_LISR pfnLISR,
				  void *pvData,
				  IMG_HANDLE *phLISRData)
{
	IMG_UINT32 ui32IRQFlags = SYS_IRQ_FLAG_TRIGGER_LOW;

	PVR_UNREFERENCED_PARAMETER(hSysData);

#if defined(PVRSRV_GPUVIRT_MULTIDRV_MODEL)
	ui32IRQFlags |= SYS_IRQ_FLAG_SHARED;
#endif

	return OSInstallSystemLISR(phLISRData, ui32IRQ, pszName, pfnLISR, pvData,
							   ui32IRQFlags);
}

PVRSRV_ERROR SysUninstallDeviceLISR(IMG_HANDLE hLISRData)
{
	return OSUninstallSystemLISR(hLISRData);
}


PVRSRV_ERROR SysDebugInfo(PVRSRV_DEVICE_CONFIG *psDevConfig,
	DUMPDEBUG_PRINTF_FUNC *pfnDumpDebugPrintf, void *pvDumpDebugFile)
{
	PVR_UNREFERENCED_PARAMETER(psDevConfig);
	PVR_UNREFERENCED_PARAMETER(pfnDumpDebugPrintf);
	return PVRSRV_OK;
}

/******************************************************************************
* End of file (sysconfig.c)
******************************************************************************/