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Diffstat (limited to 'usrp2/firmware/apps/serdes_txrx.c')
-rw-r--r--usrp2/firmware/apps/serdes_txrx.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/usrp2/firmware/apps/serdes_txrx.c b/usrp2/firmware/apps/serdes_txrx.c
deleted file mode 100644
index aa4a3f33c..000000000
--- a/usrp2/firmware/apps/serdes_txrx.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * Copyright 2007,2008,2009 Free Software Foundation, Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "u2_init.h"
-#include "memory_map.h"
-#include "spi.h"
-#include "hal_io.h"
-#include "buffer_pool.h"
-#include "pic.h"
-#include "bool.h"
-#include "ethernet.h"
-#include "nonstdio.h"
-#include "usrp2_eth_packet.h"
-#include "dbsm.h"
-#include "app_common_v2.h"
-#include "memcpy_wa.h"
-#include "clocks.h"
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-
-
-#define FW_SETS_SEQNO 1 // define to 0 or 1 (FIXME must be 1 for now)
-
-#if (FW_SETS_SEQNO)
-static int fw_seqno; // used when f/w is filling in sequence numbers
-#endif
-
-
-/*
- * Full duplex Tx and Rx between serdes and DSP pipelines
- *
- * Buffer 1 is used by the cpu to send frames to the host.
- * Buffers 2 and 3 are used to double-buffer the DSP Rx to serdes flow
- * Buffers 4 and 5 are used to double-buffer the serdes to DSP Tx flow
- */
-//#define CPU_RX_BUF 0 // eth -> cpu
-
-#define DSP_RX_BUF_0 2 // dsp rx -> serdes (double buffer)
-#define DSP_RX_BUF_1 3 // dsp rx -> serdes
-#define DSP_TX_BUF_0 4 // serdes -> dsp tx (double buffer)
-#define DSP_TX_BUF_1 5 // serdes -> dsp tx
-
-/*
- * ==================================================================
- * configure DSP TX double buffering state machine (serdes -> dsp)
- * ==================================================================
- */
-
-// 4 lines of ethernet hdr + 1 line transport hdr + 2 lines (word0 + timestamp)
-// DSP Tx reads word0 (flags) + timestamp followed by samples
-
-#define DSP_TX_FIRST_LINE ((sizeof(u2_eth_hdr_t) + sizeof(u2_transport_hdr_t))/4)
-
-// Receive from serdes
-buf_cmd_args_t dsp_tx_recv_args = {
- PORT_SERDES,
- 0,
- BP_LAST_LINE
-};
-
-// send to DSP Tx
-buf_cmd_args_t dsp_tx_send_args = {
- PORT_DSP,
- DSP_TX_FIRST_LINE, // starts just past transport header
- 0 // filled in from last_line register
-};
-
-dbsm_t dsp_tx_sm; // the state machine
-
-/*
- * =================================================================
- * configure DSP RX double buffering state machine (dsp -> serdes)
- * =================================================================
- */
-
-// 4 lines of ethernet hdr + 1 line transport hdr + 1 line (word0)
-// DSP Rx writes timestamp followed by nlines_per_frame of samples
-#define DSP_RX_FIRST_LINE ((sizeof(u2_eth_hdr_t) + sizeof(u2_transport_hdr_t))/4 + 1)
-
-// receive from DSP
-buf_cmd_args_t dsp_rx_recv_args = {
- PORT_DSP,
- DSP_RX_FIRST_LINE,
- BP_LAST_LINE
-};
-
-// send to serdes
-buf_cmd_args_t dsp_rx_send_args = {
- PORT_SERDES,
- 0, // starts with ethernet header in line 0
- 0, // filled in from list_line register
-};
-
-dbsm_t dsp_rx_sm; // the state machine
-
-
-// The mac address of the host we're sending to.
-u2_mac_addr_t host_mac_addr;
-
-
-// variables for streaming mode
-
-static bool streaming_p = false;
-static unsigned int streaming_items_per_frame = 0;
-static int streaming_frame_count = 0;
-#define FRAMES_PER_CMD 1000
-
-bool is_streaming(void){ return streaming_p; }
-
-// ----------------------------------------------------------------
-
-
-void
-restart_streaming(void)
-{
- // setup RX DSP regs
- dsp_rx_regs->clear_state = 1; // reset
-
- streaming_p = true;
- streaming_frame_count = FRAMES_PER_CMD;
-
- dsp_rx_regs->rx_command =
- MK_RX_CMD(FRAMES_PER_CMD * streaming_items_per_frame,
- streaming_items_per_frame,
- 1, 1); // set "chain" bit
-
- // kick off the state machine
- dbsm_start(&dsp_rx_sm);
-
- dsp_rx_regs->rx_time = 0; // enqueue first of two commands
-
- // make sure this one and the rest have the "now" and "chain" bits set.
- dsp_rx_regs->rx_command =
- MK_RX_CMD(FRAMES_PER_CMD * streaming_items_per_frame,
- streaming_items_per_frame,
- 1, 1);
-
- dsp_rx_regs->rx_time = 0; // enqueue second command
-}
-
-void
-start_rx_streaming_cmd(const u2_mac_addr_t *host, op_start_rx_streaming_t *p)
-{
- host_mac_addr = *host; // remember who we're sending to
-
- /*
- * Construct ethernet header and word0 and preload into two buffers
- */
- u2_eth_packet_t pkt;
- memset(&pkt, 0, sizeof(pkt));
- pkt.ehdr.dst = *host;
- pkt.ehdr.src = *ethernet_mac_addr();
- pkt.ehdr.ethertype = U2_ETHERTYPE;
- u2p_set_word0(&pkt.fixed, 0, 0);
- // DSP RX will fill in timestamp
-
- memcpy_wa(buffer_ram(DSP_RX_BUF_0), &pkt, sizeof(pkt));
- memcpy_wa(buffer_ram(DSP_RX_BUF_1), &pkt, sizeof(pkt));
-
-
- if (FW_SETS_SEQNO)
- fw_seqno = 0;
-
- streaming_items_per_frame = p->items_per_frame;
- restart_streaming();
-}
-
-void start_rx_streaming_at_cmd(const u2_mac_addr_t *host, op_start_rx_streaming_t *p, uint32_t time)
-{}
-void restart_streaming_at(uint32_t time)
-{}
-
-void
-stop_rx_cmd(void)
-{
- streaming_p = false;
- dsp_rx_regs->clear_state = 1; // flush cmd queue
- bp_clear_buf(DSP_RX_BUF_0);
- bp_clear_buf(DSP_RX_BUF_1);
-}
-
-
-static void
-setup_tx()
-{
- dsp_tx_regs->clear_state = 1;
- bp_clear_buf(DSP_TX_BUF_0);
- bp_clear_buf(DSP_TX_BUF_1);
-
- int tx_scale = 256;
- int interp = 32;
-
- // setup some defaults
-
- dsp_tx_regs->freq = 0;
- dsp_tx_regs->scale_iq = (tx_scale << 16) | tx_scale;
- dsp_tx_regs->interp_rate = interp;
-}
-
-
-#if (FW_SETS_SEQNO)
-/*
- * Debugging ONLY. This will be handled by the tx_protocol_engine.
- *
- * This is called when the DSP Rx chain has filled in a packet.
- * We set and increment the seqno, then return false, indicating
- * that we didn't handle the packet. A bit of a kludge
- * but it should work.
- */
-bool
-fw_sets_seqno_inspector(dbsm_t *sm, int buf_this) // returns false
-{
- uint32_t *p = buffer_ram(buf_this);
- uint32_t seqno = fw_seqno++;
-
- // KLUDGE all kinds of nasty magic numbers and embedded knowledge
- uint32_t t = p[4];
- t = (t & 0xffff00ff) | ((seqno & 0xff) << 8);
- p[4] = t;
-
- // queue up another rx command when required
- if (streaming_p && --streaming_frame_count == 0){
- streaming_frame_count = FRAMES_PER_CMD;
- dsp_rx_regs->rx_time = 0;
- }
-
- return false; // we didn't handle the packet
-}
-#endif
-
-
-inline static void
-buffer_irq_handler(unsigned irq)
-{
- // hal_toggle_leds(LED_A);
-
- uint32_t status = buffer_pool_status->status;
-
- if (0 && (status & ~BPS_IDLE_ALL)){
- putstr("status = ");
- puthex32_nl(status);
- }
-
- dbsm_process_status(&dsp_tx_sm, status);
- dbsm_process_status(&dsp_rx_sm, status);
-}
-
-int
-main(void)
-{
- u2_init();
-
- output_regs->led_src = 0x3; // h/w controls bottom two bits
- clocks_enable_test_clk(true, 1);
-
- putstr("\nSERDES TxRx\n");
-
- cpu_tx_buf_dest_port = PORT_SERDES;
-
- // ethernet_register_link_changed_callback(link_changed_callback);
- // ethernet_init();
-
- clocks_mimo_config(MC_WE_LOCK_TO_MIMO);
-
- // puts("post clocks_mimo_config");
-
-#if 0
- // make bit 15 of Tx gpio's be a s/w output
- hal_gpio_set_sel(GPIO_TX_BANK, 15, 's');
- hal_gpio_set_ddr(GPIO_TX_BANK, 0x8000, 0x8000);
-#endif
-
-#if 0
- output_regs->debug_mux_ctrl = 1;
- hal_gpio_set_sels(GPIO_TX_BANK, "0000000000000000");
- hal_gpio_set_sels(GPIO_RX_BANK, "0000000000000000");
- hal_gpio_set_ddr(GPIO_TX_BANK, 0xffff, 0xffff);
- hal_gpio_set_ddr(GPIO_RX_BANK, 0xffff, 0xffff);
-#endif
-
-
- // initialize double buffering state machine for ethernet -> DSP Tx
-
- dbsm_init(&dsp_tx_sm, DSP_TX_BUF_0,
- &dsp_tx_recv_args, &dsp_tx_send_args,
- eth_pkt_inspector);
-
-
- //output_regs->flush_icache = 1;
-
- // initialize double buffering state machine for DSP RX -> Ethernet
-
- if (FW_SETS_SEQNO){
- dbsm_init(&dsp_rx_sm, DSP_RX_BUF_0,
- &dsp_rx_recv_args, &dsp_rx_send_args,
- fw_sets_seqno_inspector);
- }
- else {
- dbsm_init(&dsp_rx_sm, DSP_RX_BUF_0,
- &dsp_rx_recv_args, &dsp_rx_send_args,
- dbsm_nop_inspector);
- }
-
- // puts("post dbsm_init's");
-
- // tell app_common that this dbsm could be sending to the ethernet
- ac_could_be_sending_to_eth = &dsp_rx_sm;
-
-
- // program tx registers
- setup_tx();
-
- // puts("post setup_tx");
-
- // kick off the state machine
- dbsm_start(&dsp_tx_sm);
-
- // puts("post dbsm_start");
-
- //int which = 0;
-
- while(1){
- // hal_gpio_write(GPIO_TX_BANK, which, 0x8000);
- // which ^= 0x8000;
-
- buffer_irq_handler(0);
-
- int pending = pic_regs->pending; // poll for under or overrun
-
- if (pending & PIC_UNDERRUN_INT){
- dbsm_handle_tx_underrun(&dsp_tx_sm);
- pic_regs->pending = PIC_UNDERRUN_INT; // clear interrupt
- putchar('U');
- }
-
- if (pending & PIC_OVERRUN_INT){
- dbsm_handle_rx_overrun(&dsp_rx_sm);
- pic_regs->pending = PIC_OVERRUN_INT; // clear pending interrupt
-
- // FIXME Figure out how to handle this robustly.
- // Any buffers that are emptying should be allowed to drain...
-
- if (streaming_p){
- // restart_streaming();
- // FIXME report error
- }
- else {
- // FIXME report error
- }
- putchar('O');
- }
- }
-}
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