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/*
* 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.
*
*/
// Module name: load_ILDB_Cntrl_Data.asm
//
// This module loads AVC ILDB control data for one MB.
//
//----------------------------------------------------------------
// Symbols need to be defined before including this module
//
// Source region in :ud
// CNTRL_DATA_D: CNTRL_DATA_D Base=rxx ElementSize=4 SrcRegion=REGION(8,1) Type=ud // 8 GRFs
//
// Binding table index:
// BI_CNTRL_DATA: Binding table index of control data surface
//
//----------------------------------------------------------------
// We need to get control data offset for the bottom MB in mbaff mode.
// That is, get f0.1=1 if MbaffFlag==1 && BotFieldFlag==1
and (1) CTemp1_W:uw BitFields:uw MbaffFlag+BotFieldFlag:uw // Mute all other bits
and.nz.f0.0 (1) null:w BitFields:w CntlDataExpFlag:w // Get CntlDataExpFlag
cmp.e.f0.1 (1) NULLREGW CTemp1_W:uw MbaffFlag+BotFieldFlag:uw // Check mbaff and bot flags
(f0.0) jmpi ILDB_LABEL(READ_BLC_CNTL_DATA)
// On Crestline, MB control data in memory occupy 64 DWs (expanded).
// mov (1) MSGSRC.0<1>:ud 0:w { NoDDClr } // Block origin X
// mov (1) MSGSRC.1<1>:ud CntrlDataOffsetY:ud { NoDDClr, NoDDChk } // Block origin Y
// mov (1) MSGSRC.2<1>:ud 0x000F000F:ud { NoDDChk } // Block width and height (16x16=256 bytes)
mov (2) MSGSRC.0<1>:ud ORIX_CUR<2;2,1>:uw { NoDDClr } // Block origin X,Y
mov (1) MSGSRC.2<1>:ud 0x000F000F:ud { NoDDChk } // Block width and height (16x16=256 bytes)
(f0.1) add (1) MSGSRC.1:ud MSGSRC.1:ud 16:w // +16 to for bottom MB in a pair
send (8) CNTRL_DATA_D(0)<1> MSGHDRY MSGSRC<8;8,1>:ud DAPREAD DWBRMSGDSC_SC+0x00080000+BI_CNTRL_DATA // Receive 8 GRFs
jmpi ILDB_LABEL(READ_CNTL_DATA_DONE)
ILDB_LABEL(READ_BLC_CNTL_DATA):
// On Bearlake-C, MB control data in memory occupy 16 DWs. Data port returns 8 GRFs with expanded control data.
// Global offset
mov (1) MSGSRC.2:ud CntrlDataOffsetY:ud // CntrlDataOffsetY is the global offset
(f0.1) add (1) MSGSRC.2:ud MSGSRC.2:ud 64:w // +64 to the next MB control data (bot MB)
send (8) CNTRL_DATA_D(0)<1> MSGHDRY MSGSRC<8;8,1>:ud DAPREAD RESP_LEN(8)+ILDBRMSGDSC+BI_CNTRL_DATA // Receive 8 GRFs
ILDB_LABEL(READ_CNTL_DATA_DONE):
// End of load_ILDB_Cntrl_Data.asm
// AVC ILDB control data message header format
//DWord Bit Description
//M0.7 31:0 Debug
//M0.6 31:0 Debug
//M0.5 31:8 Ignored
// 7:0 Dispatch ID. // This ID is assigned by the fixed function unit and is a unique identifier for the thread. It is used to free up resources used by the thread upon thread completion.
//M0.4 31:0 Ignored
//M0.3 31:0 Ignored
//M0.2 31:0 Global Offset. Specifies the global byte offset into the buffer.
// This offset must be OWord aligned (bits 3:0 MBZ) Format = U32 Range = [0,FFFFFFF0h]
//M0.1 31:0 Ignored
//M0.0 31:0 Ignored
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