/*
* Copyright © <2010>, Intel Corporation.
*
* This program is licensed under the terms and conditions of the
* Eclipse Public License (EPL), version 1.0. The full text of the EPL is at
* http://www.opensource.org/licenses/eclipse-1.0.php.
*
*/
// Kernel name: AVC_ILDB_Root_Y.asm
//
// Root kernel serves as a scheduler for child threads
//
// $Revision: 1 $
// $Date: 10/19/06 5:06p $
//
// ----------------------------------------------------
// AVC_ILDB_ROOT_Y
// ----------------------------------------------------
#define AVC_ILDB
.kernel AVC_ILDB_ROOT_Y
#if defined(COMBINED_KERNEL)
ILDB_LABEL(AVC_ILDB_ROOT_Y):
#endif
#include "SetupVPKernel.asm"
#include "AVC_ILDB.inc"
/////////////////////////////////////////////////////////////////////////////////////
#if defined(_DEBUG)
// Init URB space for running on RTL. It satisfies reading an unwritten URB entries.
// Will remove it for production release.
mov (8) m1:ud 0x11111111:ud
mov (8) m2:ud 0x22222222:ud
mov (8) m3:ud 0x33333333:ud
mov (8) m4:ud 0x44444444:ud
mov (1) Temp1_W:w 0:w
ILDB_LABEL(ILDB_INIT_URB_Y):
//mul (1) Temp2_W:w Temp1_W:w 4:w // URBOffset
//shl (1) URBWriteMsgDescLow:uw Temp2_W:w 4:w // Msg descriptor: URB write dest offset (9:4)
//mov (1) URBWriteMsgDescHigh:uw 0x0650:uw // Msg descriptor: URB write 5 MRFs (m0 - m4)
//mul (1) URBOffset:uw Temp1_W:uw 4:w // Each thread uses 4 URB entries (1 r0 + 1 inline + 2 data)
mul (1) URBOffset:uw Temp1_W:uw 2:w // Each thread uses 2 URB entries (1 r0 + 1 inline)
mov (1) URBWriteMsgDesc:ud MSG_LEN(2)+URBWMSGDSC:ud // Msg descriptor: URB write msg length = 3
#include "writeURB.asm"
add (1) Temp1_W:w Temp1_W:w 1:w // Increase block count
cmp.l.f0.0 (1) null Temp1_W:w MBsCntY:w // Check the block count limit
(f0.0) jmpi ILDB_LABEL(ILDB_INIT_URB_Y) // Loop back
mov (1) EntrySignature:w 0xFFF0:w
#endif
/////////////////////////////////////////////////////////////////////////////////////
// Set global variable
mov (32) ChildParam:uw 0:uw // Reset local variables, 2 GRFs
//mul (1) TotalBlocks:w MBsCntX:w MBsCntY:w // Total # of blocks
//add (1) GatewayApertureE:w MBsCntY:w GatewayApertureB:w // Aperture End = aperture Head + BlockCntY
// 4 URB entries for Y:
// Entry 0 - Child thread R0Hdr
// Entry 1 - input parameter to child kernel (child r1)
// Entry 2 - Prev MB data Y 4x16, col 1 and col 0
// Entry 3 - Prev MB data Y 4x16, col 3 and col 2
#undef URB_ENTRIES_PER_MB
#define URB_ENTRIES_PER_MB 4
// URB_ENTRIES_PER_MB in differnt form, the final desired format is (URB_ENTRIES_PER_MB-1) << 10
mov (1) URB_EntriesPerMB_2:w URB_ENTRIES_PER_MB-1:w
shl (1) URB_EntriesPerMB_2:w URB_EntriesPerMB_2:w 10:w
shr (1) ThreadLimit:w MaxThreads:w 1:w // Initial luma thread limit to 50%
mul (1) TotalBlocks:w MBsCntX:w MBsCntY:w // MBs to be processed count down from TotalBlocks
//***** Init CT_R0Hdr fields that are common to all threads *************************
mov (8) CT_R0Hdr.0:ud r0.0<8;8,1>:ud // Init to root R0 header
mov (1) CT_R0Hdr.7:ud r0.6:ud // Copy Parent Thread Cnt; JJ did the change on 06/20/2006
mov (1) CT_R0Hdr.31:ub 0:w // Reset the highest byte
mov (1) CT_R0Hdr.3:ud 0x00000000
mov (1) CT_R0Hdr.6:uw sr0.0:uw // sr0.0: state reg contains general thread states, e.g. EUID/TID.
//***** Init ChildParam fields that are common to all threads ***********************
mov (8) ChildParam<1>:ud RootParam<8;8,1>:ud // Copy all root parameters
mov (4) CurCol<1>:w 0:w // Reset CurCol, CurRow,
add (2) LastCol<1>:w MBsCntX<2;2,1>:w -1:w // Get LastCol and LastRow
mov (1) URBWriteMsgDesc:ud MSG_LEN(2)+URBWMSGDSC:ud
//===================================================================================
#include "AVC_ILDB_OpenGateway.asm" // Open gateway for receiving notification
#if defined(DEV_CL)
mov (1) URBOffset:uw 240:uw // Use chroma URB offset to spawn chroma root
#else
mov (1) URBOffset:uw 320:uw // Use chroma URB offset to spawn chroma root
#endif
#include "AVC_ILDB_SpawnChromaRoot.asm" // Spawn chroma root
mov (1) URBOffset:uw 0:uw // Use luma URB offset to spawn luma child
mov (1) ChildThreadsID:uw 2:uw // Starting ChildThreadsID for luma child threads
#include "AVC_ILDB_Dep_Check.asm" // Check dependency and spawn all luma child threads in parallel with chroma root
// Wait for UV root thread to finish
ILDB_LABEL(WAIT_FOR_UV):
cmp.l.f0.0 (1) null:w ThreadLimit:w MaxThreads:w
(f0.0) jmpi ILDB_LABEL(WAIT_FOR_UV)
#include "AVC_ILDB_CloseGateway.asm" // Close root thread gateway
END_THREAD // End of root thread
#if !defined(COMBINED_KERNEL) // For standalone kernel only
.end_code
.end_kernel
#endif