2010-04-09 18:02:16 +00:00
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/* Layer 1 - Transmit Normal Burst */
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/* (C) 2010 by Dieter Spaar <spaar@mirider.augusta.de>
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* (C) 2010 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <defines.h>
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#include <debug.h>
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#include <memory.h>
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#include <byteorder.h>
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#include <osmocore/gsm_utils.h>
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#include <osmocore/msgb.h>
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#include <calypso/dsp_api.h>
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#include <calypso/irq.h>
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#include <calypso/tpu.h>
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#include <calypso/tsp.h>
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#include <calypso/dsp.h>
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#include <calypso/timer.h>
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#include <comm/sercomm.h>
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#include <layer1/sync.h>
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#include <layer1/agc.h>
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#include <layer1/tdma_sched.h>
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#include <layer1/mframe_sched.h>
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#include <layer1/tpu_window.h>
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#include <layer1/l23_api.h>
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#include <l1a_l23_interface.h>
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/* Channel type definitions for DEDICATED mode */
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#define INVALID_CHANNEL 0
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#define TCH_F 1
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#define TCH_H 2
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#define SDCCH_4 3
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#define SDCCH_8 4
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/* Channel mode definitions for DEDICATED mode */
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#define SIG_ONLY_MODE 0 // signalling only
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#define TCH_FS_MODE 1 // speech full rate
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#define TCH_HS_MODE 2 // speech half rate
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#define TCH_96_MODE 3 // data 9,6 kb/s
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#define TCH_48F_MODE 4 // data 4,8 kb/s full rate
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#define TCH_48H_MODE 5 // data 4,8 kb/s half rate
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#define TCH_24F_MODE 6 // data 2,4 kb/s full rate
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#define TCH_24H_MODE 7 // data 2,4 kb/s half rate
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#define TCH_EFR_MODE 8 // enhanced full rate
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#define TCH_144_MODE 9 // data 14,4 kb/s half rate
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2010-06-20 17:21:32 +00:00
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static uint32_t last_txnb_fn;
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2010-04-09 18:02:16 +00:00
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static const uint8_t ubUui[23] = { 0x01, 0x03, 0x01, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b };
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/* p1: type of operation (0: one NB, 1: one RACH burst, 2: four NB */
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static int l1s_tx_resp(__unused uint8_t p1, __unused uint8_t burst_id,
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__unused uint16_t p3)
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{
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putchart('t');
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dsp_api.r_page_used = 1;
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2010-06-20 17:21:32 +00:00
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if (burst_id == 3) {
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last_txnb_fn = l1s.current_time.fn - 4;
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l1s_compl_sched(L1_COMPL_TX_NB);
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}
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2010-04-09 18:02:16 +00:00
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return 0;
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}
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/* p1: type of operation (0: one NB, 1: one RACH burst, 2: four NB */
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static int l1s_tx_cmd(uint8_t p1, uint8_t burst_id, uint16_t p3)
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{
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uint8_t tsc;
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uint8_t mf_task_id = p3 & 0xff;
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uint8_t mf_task_flags = p3 >> 8;
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putchart('T');
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l1s_tx_apc_helper();
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if (p1 == 0) /* DUL_DSP_TASK, one normal burst */
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dsp_load_tch_param(0, SIG_ONLY_MODE, INVALID_CHANNEL, 0, 0, 0);
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else if (p1 == 2) /* DUL_DSP_TASK, four normal bursts */
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dsp_load_tch_param(0, SIG_ONLY_MODE, SDCCH_4, 0, 0, 0);
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/* before sending first of the four bursts, copy data to API ram */
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if (burst_id == 0) {
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uint16_t *info_ptr = dsp_api.ndb->a_cu;
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struct llist_head *tx_queue;
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struct msgb *msg;
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const uint8_t *data;
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int i;
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uint8_t j;
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/* distinguish between DCCH and ACCH */
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if (mf_task_flags & MF_F_SACCH) {
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puts("SACCH queue ");
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tx_queue = &l1s.tx_queue[L1S_CHAN_SACCH];
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} else {
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puts("SDCCH queue ");
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tx_queue = &l1s.tx_queue[L1S_CHAN_MAIN];
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}
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msg = msgb_dequeue(tx_queue);
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/* If the TX queue is empty, send idle pattern */
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if (!msg) {
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puts("TX idle pattern\n");
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data = ubUui;
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} else {
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puts("TX uplink msg\n");
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data = msg->l3h;
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}
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/* Fill data block Header */
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info_ptr[0] = (1 << B_BLUD); // 1st word: Set B_BLU bit.
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info_ptr[1] = 0; // 2nd word: cleared.
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info_ptr[2] = 0; // 3rd word: cleared.
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/* Copy first 22 bytes in the first 11 words after header. */
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for (i=0, j=(3+0); j<(3+11); j++) {
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info_ptr[j] = ((uint16_t)(data[i])) | ((uint16_t)(data[i+1]) << 8);
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printf("%02x %02x ", data[i], data[i+1]);
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i += 2;
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}
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/* Copy last UWORD8 (23rd) in the 12th word after header. */
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info_ptr[14] = data[22];
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printf("%02x\n", data[22]);
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if (msg)
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msgb_free(msg);
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}
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tsc = 7; // !!!!! nanoBTS configuration for SDCCH 0 !!!!!!!!
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dsp_load_tx_task(DUL_DSP_TASK, burst_id, tsc);
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dsp_end_scenario();
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l1s_tx_win_ctrl(l1s.serving_cell.arfcn, L1_TXWIN_NB, 0);
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tpu_end_scenario();
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return 0;
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}
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2010-06-20 17:21:32 +00:00
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/* Asynchronous completion handler for NB transmit */
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static void l1a_tx_nb_compl(__unused enum l1_compl c)
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{
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struct msgb *msg;
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msg = l1_create_l2_msg(L1CTL_DATA_CONF, last_txnb_fn, 0, 0);
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l1_queue_for_l2(msg);
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}
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2010-04-09 18:02:16 +00:00
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void l1s_tx_test(uint8_t base_fn, uint8_t type)
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{
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printf("Starting TX %d\n", type);
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if (type == 0) {// one normal burst
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tdma_schedule(base_fn, &l1s_tx_cmd, 0, 0, 0);
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tdma_schedule(base_fn + 2, &l1s_tx_resp, 0, 0, 0);
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} else if (type == 2) { // four normal burst
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tdma_schedule(base_fn, &l1s_tx_cmd, 2, 0, 0);
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tdma_schedule(base_fn + 1, &l1s_tx_cmd, 2, 1, 0);
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tdma_schedule(base_fn + 2, &l1s_tx_resp, 2, 0, 0);
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tdma_schedule(base_fn + 2, &l1s_tx_cmd, 2, 2, 0);
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tdma_schedule(base_fn + 3, &l1s_tx_resp, 2, 1, 0);
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tdma_schedule(base_fn + 3, &l1s_tx_cmd, 2, 3, 0);
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tdma_schedule(base_fn + 4, &l1s_tx_resp, 2, 2, 0);
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tdma_schedule(base_fn + 5, &l1s_tx_resp, 2, 3, 0);
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}
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}
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/* sched sets for uplink */
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const struct tdma_sched_item nb_sched_set_ul[] = {
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SCHED_ITEM(l1s_tx_cmd, 2, 0), SCHED_END_FRAME(),
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SCHED_ITEM(l1s_tx_cmd, 2, 1), SCHED_END_FRAME(),
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SCHED_ITEM(l1s_tx_resp, 2, 0), SCHED_ITEM(l1s_tx_cmd, 2, 2), SCHED_END_FRAME(),
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SCHED_ITEM(l1s_tx_resp, 2, 1), SCHED_ITEM(l1s_tx_cmd, 2, 3), SCHED_END_FRAME(),
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SCHED_ITEM(l1s_tx_resp, 2, 2), SCHED_END_FRAME(),
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SCHED_ITEM(l1s_tx_resp, 2, 3), SCHED_END_FRAME(),
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SCHED_END_SET()
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};
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2010-06-24 11:30:56 +00:00
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static __attribute__ ((constructor)) void prim_tx_nb_init(void)
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{
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l1s.completion[L1_COMPL_TX_NB] = &l1a_tx_nb_compl;
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}
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