Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5361 | serge | 1 | /* |
| 2 | * Copyright © <2010>, Intel Corporation. |
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| 3 | * |
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| 4 | * This program is licensed under the terms and conditions of the |
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| 5 | * Eclipse Public License (EPL), version 1.0. The full text of the EPL is at |
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| 6 | * http://www.opensource.org/licenses/eclipse-1.0.php. |
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| 7 | * |
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| 8 | */ |
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| 9 | //========== Forward message to root thread through gateway ========== |
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| 10 | // Each child thread write a byte into the root GRF r50 defiend in open Gataway. |
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| 11 | |||
| 12 | #if defined(_DEBUG) |
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| 13 | mov (1) EntrySignatureC:w 0x7777:w |
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| 14 | #endif |
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| 15 | |||
| 16 | // Init payload to r0 |
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| 17 | mov (8) GatewayPayload<1>:ud 0:w //{ NoDDClr } |
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| 18 | |||
| 19 | // Forward a message: |
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| 20 | // Offset = x relative to r50 (defiend in open gataway), x = ORIX >> 4 [bit 28:16] |
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| 21 | // Need to shift left 16 |
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| 22 | |||
| 23 | // shift 2 more bits for byte to word offset |
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| 24 | |||
| 25 | //shl (1) Offset_Length:ud GateWayOffsetC:w 16:w { NoDDClr, NoDDChk } |
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| 26 | shl (1) Offset_Length:ud GateWayOffsetC:w 18:w |
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| 27 | |||
| 28 | // 2 bytes offset |
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| 29 | add (1) Offset_Length:ud Offset_Length:ud 0x00020000:d { NoDDClr } |
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| 30 | |||
| 31 | // Length = 1 byte, [bit 10:8 = 000] |
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| 32 | //000 xxxxxxxxxxxxx 00000 000 00000000 ==> 000x xxxx xxxx xxxx 0000 0000 0000 0000 |
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| 33 | |||
| 34 | //mov (1) DispatchID:ub r0.20:ub // Dispatch ID |
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| 35 | |||
| 36 | //Move in EUid and Thread ID that we received from the PARENT thread |
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| 37 | mov (1) EUID_TID:uw r0.6:uw { NoDDClr, NoDDChk } |
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| 38 | |||
| 39 | mov (1) GatewayPayloadKey:uw 0x1212:uw { NoDDClr, NoDDChk } // Key |
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| 40 | |||
| 41 | //mov (4) GatewayPayload<1>:ud 0:ud { NoDDClr, NoDDChk } // Init payload low 4 dword |
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| 42 | |||
| 43 | // Write back one byte (value = 0xFF) to root thread GRF to indicate this child thread is finished |
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| 44 | // All lower 4 bytes must be assigned to the same byte value. |
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| 45 | mov (4) GatewayPayload<1>:ub 0xFFFF:uw { NoDDChk } |
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| 46 | |||
| 47 | // msg descriptor bit 15 set to '1' for notification |
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| 48 | #ifdef GW_DCN |
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| 49 | // For ILK, EOT bit should also be set to terminate the thread. This is to fix a timing related HW issue. |
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| 50 | // |
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| 51 | send (8) null:ud m0 GatewayPayload<8;8,1>:ud MSG_GW_EOT FWDMSGDSC+NOTIFYMSG |
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| 52 | #else |
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| 53 | send (8) null:ud m0 GatewayPayload<8;8,1>:ud MSG_GW FWDMSGDSC+NOTIFYMSG |
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| 54 | #endif // GW_DCN |
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| 55 | |||
| 56 | //========== Forward Msg Done ======================================== |
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| 57 |