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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 |