| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * OpenSPARC T2 Processor File: niu_pktgen.s |
| 5 | * Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved |
| 6 | * 4150 Network Circle, Santa Clara, California 95054, U.S.A. |
| 7 | * |
| 8 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; version 2 of the License. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | * For the avoidance of doubt, and except that if any non-GPL license |
| 24 | * choice is available it will apply instead, Sun elects to use only |
| 25 | * the General Public License version 2 (GPLv2) at this time for any |
| 26 | * software where a choice of GPL license versions is made |
| 27 | * available with the language indicating that GPLv2 or any later version |
| 28 | * may be used, or where a choice of which version of the GPL is applied is |
| 29 | * otherwise unspecified. |
| 30 | * |
| 31 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 32 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 33 | * have any questions. |
| 34 | * |
| 35 | * |
| 36 | * ========== Copyright Header End ============================================ |
| 37 | */ |
| 38 | SECTION .HTRAPS |
| 39 | .text |
| 40 | #ifdef ENABLE_NIU_BG_TX |
| 41 | .global NIU_PktGenTx |
| 42 | NIU_PktGenTx: |
| 43 | save |
| 44 | |
| 45 | NIU_PktGenTx_Initflow: |
| 46 | ! $EV trig_pc_d(1, @VA(.HTRAPS.NIU_PktGenTx_Initflow)) -> pktGenConfig(NIU_BG_TX_MAC_ID, FRAME_TYPE, FRAME_CLASS,NIU_BG_TX_PKT_LEN,0,0,1) |
| 47 | nop |
| 48 | |
| 49 | NIU_PktGenTx_Gen_Packet: |
| 50 | ! $EV trig_pc_d(1, @VA(.HTRAPS.NIU_PktGenTx_Gen_Packet)) -> TxPktGen(NIU_BG_TX_MAC_ID, NIU_BG_TX_DMA_NUM_HEX, NIU_BG_TX_PKT_COUNT, 0, 0, 0, 1) |
| 51 | /* Small delay loop to wait for packets to be written to DRAM */ |
| 52 | best_set_reg(NIU_BG_TX_PKT_COUNT, %l7, %l0) |
| 53 | NIU_PktGenTx_Gen_Packet_loop: |
| 54 | brnz %l0, NIU_PktGenTx_Gen_Packet_loop |
| 55 | dec %l0 |
| 56 | |
| 57 | NIU_PktGenTx_SetTxRingKick: |
| 58 | ! $EV trig_pc_d(1, @VA(.HTRAPS.NIU_PktGenTx_SetTxRingKick)) -> NIU_SetTxRingKick(NIU_BG_TX_MAC_ID, NIU_BG_TX_DMA_NUM_HEX, 0, 0, 0, 1) |
| 59 | best_set_reg(NIU_PKTGEN_CSR_EV2A_TX_RNG_KICK, %l7, %l2) |
| 60 | #ifdef FC_NO_PEU_VERA |
| 61 | ! PEP does not support 64-bit access, so use two 32-bit loads |
| 62 | lduw [%l2], %l3 |
| 63 | lduw [%l2+4], %l7 |
| 64 | sllx %l3, 32, %l3 |
| 65 | add %l7, %l3, %l3 |
| 66 | #else // FC_NO_PEU_VERA |
| 67 | ldx [%l2], %l3 |
| 68 | #endif // FC_NO_PEU_VERA |
| 69 | best_set_reg(mpeval(TX_RING_KICK_Addr+(INTR0x60_NIU_TX_DMA_0*0x200)), %l7, %l2) |
| 70 | stxa %l3, [%l2]ASI_PRIMARY_LITTLE |
| 71 | |
| 72 | NIU_PktGenTx_SetTxCs: |
| 73 | best_set_reg(TX_CS_Data, %l7, %l3) |
| 74 | best_set_reg(mpeval(TX_CS_Addr+(INTR0x60_NIU_TX_DMA_0*0x200)), %l7, %l2) |
| 75 | stxa %l3, [%l2]ASI_PRIMARY_LITTLE |
| 76 | ret |
| 77 | restore |
| 78 | #endif /* ENABLE_NIU_BG_TX */ |
| 79 | |
| 80 | |
| 81 | |
| 82 | /*************************************************************************** |
| 83 | * NIU_PktRcv: |
| 84 | * Kick off another set of RX packets |
| 85 | ***************************************************************************/ |
| 86 | |
| 87 | NIU_PktRcv: |
| 88 | nop |
| 89 | |
| 90 | P_NIU_Rx_GenPkt: |
| 91 | !$EV trig_pc_d(1, @VA(.HTRAPS.P_NIU_Rx_GenPkt)) -> NIU_RxGenPkt(MAC_ID, RXDMA_CHNL, RXMAC_PKTCNT, MAC_PKT_LEN, 0, 0, 1) |
| 92 | |
| 93 | retl |
| 94 | nop |