int omap_display_initialize(void)
{
/*
* TODO: Is there a better way to check if list is already created?
*/
if (!omap_display_list) {
DBG_PRINT("Initializing driver");
if (create_display_list()) {
ERR_PRINT("Error loading driver");
return 1;
}
}
vdisp_wq_primary = __create_workqueue("vdisp_wq_primary", 1, 1, 1);
vdisp_wq_secondary = __create_workqueue("vdisp_wq_secondary", 1, 1, 1);
INIT_WORK((struct work_struct *)&vdisp_sync_primary,
vdisp_sync_handler);
INIT_WORK((struct work_struct *)&vdisp_sync_secondary,
vdisp_sync_handler);
return 0;
}
MTKLFB_ERROR MTKLFBCreateSwapQueue(MTKLFB_SWAPCHAIN *psSwapChain)
{
psSwapChain->psWorkQueue = __create_workqueue(DEVNAME, 1, 1, 1);
if (psSwapChain->psWorkQueue == NULL)
{
printk(KERN_WARNING DRIVER_PREFIX ": %s: Device %u: create_singlethreaded_workqueue failed\n", __FUNCTION__, psSwapChain->uiFBDevID);
return (MTKLFB_ERROR_INIT_FAILURE);
}
return (MTKLFB_OK);
}
OMAPLFB_ERROR OMAPLFBCreateSwapQueue(OMAPLFB_SWAPCHAIN *psSwapChain)
{
#if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34))
psSwapChain->psWorkQueue = __create_workqueue(DEVNAME, 1, 1, 1);
#else
psSwapChain->psWorkQueue = create_workqueue(DEVNAME);
#endif
if (psSwapChain->psWorkQueue == NULL)
{
printk(KERN_WARNING DRIVER_PREFIX ": %s: Device %u: create_singlethreaded_workqueue failed\n", __FUNCTION__, psSwapChain->uiFBDevID);
return (OMAPLFB_ERROR_INIT_FAILURE);
}
return (OMAPLFB_OK);
}
/* Create a swap chain work queue */
OMAPLFB_ERROR OMAPLFBCreateSwapQueue(OMAPLFB_SWAPCHAIN *psSwapChain)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
/*
* Calling alloc_ordered_workqueue with the WQ_FREEZABLE and
* WQ_MEM_RECLAIM flags set, (currently) has the same effect as
* calling create_freezable_workqueue. None of the other WQ
* flags are valid. Setting WQ_MEM_RECLAIM should allow the
* workqueue to continue to service the swap chain in low memory
* conditions, preventing the driver from holding on to
* resources longer than it needs to.
*/
#if (LINUX_VERSION_CODE == KERNEL_VERSION(2,6,37))
psSwapChain->psWorkQueue = alloc_ordered_workqueue(DEVNAME, WQ_FREEZEABLE | WQ_MEM_RECLAIM);
#else
psSwapChain->psWorkQueue = alloc_ordered_workqueue(DEVNAME, WQ_FREEZABLE | WQ_MEM_RECLAIM);
#endif
#else
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
psSwapChain->psWorkQueue = create_freezable_workqueue(DEVNAME);
#else
/*
* Create a single-threaded, freezable, rt-prio workqueue.
* Such workqueues are frozen with user threads when a system
* suspends, before driver suspend entry points are called.
* This ensures this driver will not call into the Linux
* framebuffer driver after the latter is suspended.
*/
psSwapChain->psWorkQueue = __create_workqueue(DEVNAME, 1, 1, 1);
#endif
#endif
if (psSwapChain->psWorkQueue == NULL)
{
printk(KERN_ERR DRIVER_PREFIX ": %s: Device %u: Couldn't create workqueue\n", __FUNCTION__, psSwapChain->uiFBDevID);
return (OMAPLFB_ERROR_INIT_FAILURE);
}
return (OMAPLFB_OK);
}
OMAPLFB_ERROR OMAPLFBCreateSwapQueue(OMAPLFB_SWAPCHAIN *psSwapChain)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
psSwapChain->psWorkQueue = alloc_ordered_workqueue(DEVNAME, WQ_FREEZABLE | WQ_MEM_RECLAIM);
#else
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
psSwapChain->psWorkQueue = create_freezable_workqueue(DEVNAME);
#else
psSwapChain->psWorkQueue = __create_workqueue(DEVNAME, 1, 1, 1);
#endif
#endif
if (psSwapChain->psWorkQueue == NULL)
{
printk(KERN_ERR DRIVER_PREFIX ": %s: Device %u: Couldn't create workqueue\n", __FUNCTION__, psSwapChain->uiFBDevID);
return (OMAPLFB_ERROR_INIT_FAILURE);
}
return (OMAPLFB_OK);
}
/*
* Creates a swap chain. Called when a 3D application begins.
* in: hDevice, ui32Flags, ui32BufferCount, psDstSurfAttrib, psSrcSurfAttrib
* ui32OEMFlags
* out: phSwapChain, ppsSyncData, pui32SwapChainID
*/
static PVRSRV_ERROR CreateDCSwapChain(IMG_HANDLE hDevice,
IMG_UINT32 ui32Flags,
DISPLAY_SURF_ATTRIBUTES *psDstSurfAttrib,
DISPLAY_SURF_ATTRIBUTES *psSrcSurfAttrib,
IMG_UINT32 ui32BufferCount,
PVRSRV_SYNC_DATA **ppsSyncData,
IMG_UINT32 ui32OEMFlags,
IMG_HANDLE *phSwapChain,
IMG_UINT32 *pui32SwapChainID)
{
struct OMAP_DISP_DEVINFO *psDevInfo;
struct OMAP_DISP_SWAPCHAIN *psSwapChain;
struct OMAP_DISP_BUFFER *psBuffer;
struct OMAP_DISP_FLIP_ITEM *psFlipItems;
IMG_UINT32 i;
PVRSRV_ERROR eError;
IMG_UINT32 ui32BuffersToSkip;
struct omap_display_device *display;
int err;
if(!hDevice || !psDstSurfAttrib || !psSrcSurfAttrib ||
!ppsSyncData || !phSwapChain)
{
ERROR_PRINTK("Invalid parameters");
return PVRSRV_ERROR_INVALID_PARAMS;
}
psDevInfo = (struct OMAP_DISP_DEVINFO*)hDevice;
if (psDevInfo->sDisplayInfo.ui32MaxSwapChains == 0)
{
ERROR_PRINTK("Unable to operate with 0 MaxSwapChains for"
" display %lu", psDevInfo->ulDeviceID);
return PVRSRV_ERROR_NOT_SUPPORTED;
}
if(psDevInfo->psSwapChain != NULL)
{
ERROR_PRINTK("Swap chain already exists for"
" display %lu", psDevInfo->ulDeviceID);
return PVRSRV_ERROR_FLIP_CHAIN_EXISTS;
}
if(ui32BufferCount > psDevInfo->sDisplayInfo.ui32MaxSwapChainBuffers)
{
ERROR_PRINTK("Too many buffers. Trying to use %u buffers while"
" there is only %u available for display %lu",
(unsigned int)ui32BufferCount,
(unsigned int)psDevInfo->
sDisplayInfo.ui32MaxSwapChainBuffers,
psDevInfo->ulDeviceID);
return PVRSRV_ERROR_TOOMANYBUFFERS;
}
ui32BuffersToSkip = psDevInfo->sDisplayInfo.ui32MaxSwapChainBuffers -
ui32BufferCount;
if((psDstSurfAttrib->pixelformat !=
psDevInfo->sDisplayFormat.pixelformat) ||
(psDstSurfAttrib->sDims.ui32ByteStride !=
psDevInfo->sDisplayDim.ui32ByteStride) ||
(psDstSurfAttrib->sDims.ui32Width !=
psDevInfo->sDisplayDim.ui32Width) ||
(psDstSurfAttrib->sDims.ui32Height !=
psDevInfo->sDisplayDim.ui32Height))
{
ERROR_PRINTK("Destination surface attributes differ from the"
" current framebuffer for display %lu",
psDevInfo->ulDeviceID);
return PVRSRV_ERROR_INVALID_PARAMS;
}
if((psDstSurfAttrib->pixelformat !=
psSrcSurfAttrib->pixelformat) ||
(psDstSurfAttrib->sDims.ui32ByteStride !=
psSrcSurfAttrib->sDims.ui32ByteStride) ||
(psDstSurfAttrib->sDims.ui32Width !=
psSrcSurfAttrib->sDims.ui32Width) ||
(psDstSurfAttrib->sDims.ui32Height !=
psSrcSurfAttrib->sDims.ui32Height))
{
ERROR_PRINTK("Destination surface attributes differ from the"
" target destination surface for display %lu",
psDevInfo->ulDeviceID);
return PVRSRV_ERROR_INVALID_PARAMS;
}
/* Create the flip chain in display side */
display = psDevInfo->display;
/* TODO: What about TILER buffers? */
/*
* Creating the flip chain with the maximum number of buffers
* we will decide which ones will be used later
*/
err = display->create_flip_chain(
display, psDevInfo->sDisplayInfo.ui32MaxSwapChainBuffers);
if(err)
{
ERROR_PRINTK("Unable to create the flip chain for '%s' display"
" id %lu", display->name, psDevInfo->ulDeviceID);
return PVRSRV_ERROR_INVALID_PARAMS;
}
/* Allocate memory needed for the swap chain */
psSwapChain = (struct OMAP_DISP_SWAPCHAIN*) kmalloc(
sizeof(struct OMAP_DISP_SWAPCHAIN), GFP_KERNEL);
if(!psSwapChain)
{
ERROR_PRINTK("Out of memory to allocate swap chain for"
" display %lu", psDevInfo->ulDeviceID);
return PVRSRV_ERROR_OUT_OF_MEMORY;
}
DEBUG_PRINTK("Creating swap chain for display %lu",
psDevInfo->ulDeviceID );
/* Allocate memory for the buffer abstraction structures */
psBuffer = (struct OMAP_DISP_BUFFER*) kmalloc(
sizeof(struct OMAP_DISP_BUFFER) * ui32BufferCount, GFP_KERNEL);
if(!psBuffer)
{
ERROR_PRINTK("Out of memory to allocate the buffer"
" abstraction structures for display %lu",
psDevInfo->ulDeviceID);
eError = PVRSRV_ERROR_OUT_OF_MEMORY;
goto ErrorFreeSwapChain;
}
/* Allocate memory for the flip item abstraction structures */
psFlipItems = (struct OMAP_DISP_FLIP_ITEM *) kmalloc (
sizeof(struct OMAP_DISP_FLIP_ITEM) * ui32BufferCount,
GFP_KERNEL);
if (!psFlipItems)
{
ERROR_PRINTK("Out of memory to allocate the flip item"
" abstraction structures for display %lu",
psDevInfo->ulDeviceID);
eError = PVRSRV_ERROR_OUT_OF_MEMORY;
goto ErrorFreeBuffers;
}
/* Assign to the swap chain structure the initial data */
psSwapChain->ulBufferCount = (unsigned long)ui32BufferCount;
psSwapChain->psBuffer = psBuffer;
psSwapChain->psFlipItems = psFlipItems;
psSwapChain->ulInsertIndex = 0;
psSwapChain->ulRemoveIndex = 0;
psSwapChain->psPVRJTable = &psDevInfo->sPVRJTable;
psSwapChain->pvDevInfo = (void*)psDevInfo;
/*
* Init the workqueue (single thread, freezable and real time)
* and its own work for this display
*/
INIT_WORK(&psDevInfo->sync_display_work, display_sync_handler);
psDevInfo->sync_display_wq =
__create_workqueue("pvr_display_sync_wq", 1, 1, 1);
DEBUG_PRINTK("Swap chain will have %u buffers for display %lu",
(unsigned int)ui32BufferCount, psDevInfo->ulDeviceID);
/* Link the buffers available like a circular list */
for(i=0; i<ui32BufferCount-1; i++)
{
psBuffer[i].psNext = &psBuffer[i+1];
}
psBuffer[i].psNext = &psBuffer[0];
/* Initialize each buffer abstraction structure */
for(i=0; i<ui32BufferCount; i++)
{
/* Get the needed buffers from the display flip chain */
IMG_UINT32 ui32SwapBuffer = i + ui32BuffersToSkip;
struct omap_display_buffer * flip_buffer =
display->flip_chain->buffers[ui32SwapBuffer];
psBuffer[i].display_buffer = flip_buffer;
psBuffer[i].psSyncData = ppsSyncData[i];
psBuffer[i].sSysAddr.uiAddr = flip_buffer->physical_addr;
psBuffer[i].sCPUVAddr =
(IMG_CPU_VIRTADDR) flip_buffer->virtual_addr;
DEBUG_PRINTK("Display %lu buffer index %u has physical "
"address 0x%x",
psDevInfo->ulDeviceID,
(unsigned int)i,
(unsigned int)psBuffer[i].sSysAddr.uiAddr);
}
/* Initialize each flip item abstraction structure */
for(i=0; i<ui32BufferCount; i++)
{
psFlipItems[i].bValid = OMAP_FALSE;
psFlipItems[i].bFlipped = OMAP_FALSE;
psFlipItems[i].bCmdCompleted = OMAP_FALSE;
psFlipItems[i].display_buffer = 0;
}
mutex_lock(&psDevInfo->sSwapChainLockMutex);
psDevInfo->psSwapChain = psSwapChain;
psSwapChain->bFlushCommands = psDevInfo->bFlushCommands;
if (psSwapChain->bFlushCommands)
psSwapChain->ulSetFlushStateRefCount = 1;
else
psSwapChain->ulSetFlushStateRefCount = 0;
mutex_unlock(&psDevInfo->sSwapChainLockMutex);
*phSwapChain = (IMG_HANDLE)psSwapChain;
return PVRSRV_OK;
ErrorFreeBuffers:
kfree(psBuffer);
ErrorFreeSwapChain:
kfree(psSwapChain);
return eError;
}