blob: 96fe8280d15eb2f8189addf8de992f7980caf5f7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* 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.
*
*/
//========== Forward message to root thread through gateway ==========
// Each child thread write a byte into the root GRF r50 defiend in open Gataway.
#if defined(_DEBUG)
mov (1) EntrySignatureC:w 0x7777:w
#endif
// Init payload to r0
mov (8) GatewayPayload<1>:ud 0:w //{ NoDDClr }
// Forward a message:
// Offset = x relative to r50 (defiend in open gataway), x = ORIX >> 4 [bit 28:16]
// Need to shift left 16
// shift 2 more bits for byte to word offset
//shl (1) Offset_Length:ud GateWayOffsetC:w 16:w { NoDDClr, NoDDChk }
shl (1) Offset_Length:ud GateWayOffsetC:w 18:w
// 2 bytes offset
add (1) Offset_Length:ud Offset_Length:ud 0x00020000:d { NoDDClr }
// Length = 1 byte, [bit 10:8 = 000]
//000 xxxxxxxxxxxxx 00000 000 00000000 ==> 000x xxxx xxxx xxxx 0000 0000 0000 0000
//mov (1) DispatchID:ub r0.20:ub // Dispatch ID
//Move in EUid and Thread ID that we received from the PARENT thread
mov (1) EUID_TID:uw r0.6:uw { NoDDClr, NoDDChk }
mov (1) GatewayPayloadKey:uw 0x1212:uw { NoDDClr, NoDDChk } // Key
//mov (4) GatewayPayload<1>:ud 0:ud { NoDDClr, NoDDChk } // Init payload low 4 dword
// Write back one byte (value = 0xFF) to root thread GRF to indicate this child thread is finished
// All lower 4 bytes must be assigned to the same byte value.
mov (4) GatewayPayload<1>:ub 0xFFFF:uw { NoDDChk }
// msg descriptor bit 15 set to '1' for notification
#ifdef GW_DCN
// For ILK, EOT bit should also be set to terminate the thread. This is to fix a timing related HW issue.
//
send (8) null:ud m0 GatewayPayload<8;8,1>:ud MSG_GW_EOT FWDMSGDSC+NOTIFYMSG
#else
send (8) null:ud m0 GatewayPayload<8;8,1>:ud MSG_GW FWDMSGDSC+NOTIFYMSG
#endif // GW_DCN
//========== Forward Msg Done ========================================
|
