2 * Copyright 2007,2008 Free Software Foundation, Inc.
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "memory_map.h"
26 #include "buffer_pool.h"
31 #include "usrp2_eth_packet.h"
33 #include "app_common_v2.h"
34 #include "memcpy_wa.h"
39 #include <usrp2_i2c_addr.h>
43 #define HW_REV_MAJOR 3
44 #define HW_REV_MINOR 0
46 #define FW_SETS_SEQNO 1 // define to 0 or 1 (FIXME must be 1 for now)
49 static int fw_seqno; // used when f/w is filling in sequence numbers
54 * Full duplex Tx and Rx between ethernet and DSP pipelines
56 * Buffer 1 is used by the cpu to send frames to the host.
57 * Buffers 2 and 3 are used to double-buffer the DSP Rx to eth flow
58 * Buffers 4 and 5 are used to double-buffer the eth to DSP Tx eth flow
60 //#define CPU_RX_BUF 0 // eth -> cpu
62 #define DSP_RX_BUF_0 2 // dsp rx -> eth (double buffer)
63 #define DSP_RX_BUF_1 3 // dsp rx -> eth
64 #define DSP_TX_BUF_0 4 // eth -> dsp tx (double buffer)
65 #define DSP_TX_BUF_1 5 // eth -> dsp tx
68 * ================================================================
69 * configure DSP TX double buffering state machine (eth -> dsp)
70 * ================================================================
73 // 4 lines of ethernet hdr + 1 line transport hdr + 2 lines (word0 + timestamp)
74 // DSP Tx reads word0 (flags) + timestamp followed by samples
76 #define DSP_TX_FIRST_LINE ((sizeof(u2_eth_hdr_t) + sizeof(u2_transport_hdr_t))/4)
78 // Receive from ethernet
79 buf_cmd_args_t dsp_tx_recv_args = {
86 buf_cmd_args_t dsp_tx_send_args = {
88 DSP_TX_FIRST_LINE, // starts just past transport header
89 0 // filled in from last_line register
92 dbsm_t dsp_tx_sm; // the state machine
95 * ================================================================
96 * configure DSP RX double buffering state machine (dsp -> eth)
97 * ================================================================
100 // 4 lines of ethernet hdr + 1 line transport hdr + 1 line (word0)
101 // DSP Rx writes timestamp followed by nlines_per_frame of samples
102 #define DSP_RX_FIRST_LINE ((sizeof(u2_eth_hdr_t) + sizeof(u2_transport_hdr_t))/4 + 1)
105 buf_cmd_args_t dsp_rx_recv_args = {
112 buf_cmd_args_t dsp_rx_send_args = {
114 0, // starts with ethernet header in line 0
115 0, // filled in from list_line register
118 dbsm_t dsp_rx_sm; // the state machine
121 // The mac address of the host we're sending to.
122 u2_mac_addr_t host_mac_addr;
125 // variables for streaming mode
127 static bool streaming_p = false;
128 static unsigned int streaming_items_per_frame = 0;
129 static int streaming_frame_count = 0;
130 #define FRAMES_PER_CMD 1000
132 bool is_streaming(void){ return streaming_p; }
134 // ----------------------------------------------------------------
138 restart_streaming(void)
141 dsp_rx_regs->clear_state = 1; // reset
144 streaming_frame_count = FRAMES_PER_CMD;
146 dsp_rx_regs->rx_command =
147 MK_RX_CMD(FRAMES_PER_CMD * streaming_items_per_frame,
148 streaming_items_per_frame,
149 1, 1); // set "chain" bit
151 // kick off the state machine
152 dbsm_start(&dsp_rx_sm);
154 dsp_rx_regs->rx_time = 0; // enqueue first of two commands
156 // make sure this one and the rest have the "now" and "chain" bits set.
157 dsp_rx_regs->rx_command =
158 MK_RX_CMD(FRAMES_PER_CMD * streaming_items_per_frame,
159 streaming_items_per_frame,
162 dsp_rx_regs->rx_time = 0; // enqueue second command
166 start_rx_streaming_cmd(const u2_mac_addr_t *host, op_start_rx_streaming_t *p)
168 host_mac_addr = *host; // remember who we're sending to
171 * Construct ethernet header and word0 and preload into two buffers
174 memset(&pkt, 0, sizeof(pkt));
175 pkt.ehdr.dst = *host;
176 pkt.ehdr.ethertype = U2_ETHERTYPE;
177 u2p_set_word0(&pkt.fixed, 0, 0);
178 // DSP RX will fill in timestamp
180 memcpy_wa(buffer_ram(DSP_RX_BUF_0), &pkt, sizeof(pkt));
181 memcpy_wa(buffer_ram(DSP_RX_BUF_1), &pkt, sizeof(pkt));
187 streaming_items_per_frame = p->items_per_frame;
196 dsp_rx_regs->clear_state = 1; // flush cmd queue
197 bp_clear_buf(DSP_RX_BUF_0);
198 bp_clear_buf(DSP_RX_BUF_1);
205 dsp_tx_regs->clear_state = 1;
206 bp_clear_buf(DSP_TX_BUF_0);
207 bp_clear_buf(DSP_TX_BUF_1);
212 // setup some defaults
214 dsp_tx_regs->freq = 0;
215 dsp_tx_regs->scale_iq = (tx_scale << 16) | tx_scale;
216 dsp_tx_regs->interp_rate = interp;
222 * Debugging ONLY. This will be handled by the tx_protocol_engine.
224 * This is called when the DSP Rx chain has filled in a packet.
225 * We set and increment the seqno, then return false, indicating
226 * that we didn't handle the packet. A bit of a kludge
227 * but it should work.
230 fw_sets_seqno_inspector(dbsm_t *sm, int buf_this) // returns false
232 uint32_t *p = buffer_ram(buf_this);
233 uint32_t seqno = fw_seqno++;
235 // KLUDGE all kinds of nasty magic numbers and embedded knowledge
237 t = (t & 0xffff00ff) | ((seqno & 0xff) << 8);
240 // queue up another rx command when required
241 if (streaming_p && --streaming_frame_count == 0){
242 streaming_frame_count = FRAMES_PER_CMD;
243 dsp_rx_regs->rx_time = 0;
246 return false; // we didn't handle the packet
252 buffer_irq_handler(unsigned irq)
254 uint32_t status = buffer_pool_status->status;
256 dbsm_process_status(&dsp_tx_sm, status);
257 dbsm_process_status(&dsp_rx_sm, status);
263 output_regs->ram_page = 1<<10;
265 extram[0] = 0xDEADBEEF;
266 extram[1] = 0xF00D1234;
267 extram[7] = 0x76543210;
269 output_regs->ram_page = 2<<10;
270 extram[7] = 0x55555555;
271 extram[1] = 0xaaaaaaaa;
272 extram[0] = 0xeeeeeeee;
274 output_regs->ram_page = 1<<10;
280 if((i != 0xDEADBEEF)||(j!=0x76543210)||(k!=0xF00D1234)) {
281 puts("RAM FAIL1!\n");
288 output_regs->ram_page = 2<<10;
294 if((i != 0xeeeeeeee)||(j!=0x55555555)||(k!=0xaaaaaaaa)) {
295 puts("RAM FAIL2!\n");
308 puts("FAILED INIT of Card\n");
312 unsigned char buf[512];
313 i = sd_read_block(2048,buf);
315 puts("READ Command Rejected\n");
318 if((buf[0]==0xb8)&&(buf[1]==0x08)&&(buf[2]==0x00)&&(buf[3]==0x50))
321 puts("Read bad data from SD Card\n");
332 putstr("\nFactory Test TXRX\n");
335 unsigned char maj = HW_REV_MAJOR;
336 unsigned char min = HW_REV_MINOR;
337 ok = eeprom_write(I2C_ADDR_MBOARD, MBOARD_REV_MSB, &maj, 1);
338 ok &= eeprom_write(I2C_ADDR_MBOARD, MBOARD_REV_LSB, &min, 1);
340 putstr("\nset_hw_rev\n");
342 printf("OK: set h/w rev to %d.%d\n", HW_REV_MAJOR, HW_REV_MINOR);
344 printf("FAILED to set h/w rev to %d.%d\n", HW_REV_MAJOR, HW_REV_MINOR);
364 print_mac_addr(ethernet_mac_addr()->addr);
367 output_regs->led_src = 0x7; // make bottom 3 controlled by HW
369 ethernet_register_link_changed_callback(link_changed_callback);
372 clocks_enable_tx_dboard(true,1);
373 clocks_mimo_config(MC_WE_LOCK_TO_SMA);
375 // make bit 15 of Tx gpio's be a s/w output
376 hal_gpio_set_sel(GPIO_TX_BANK, 15, 's');
377 hal_gpio_set_ddr(GPIO_TX_BANK, 0x8000, 0x8000);
380 output_regs->debug_mux_ctrl = 1;
382 hal_gpio_set_sels(GPIO_TX_BANK, "1111111111111111");
383 hal_gpio_set_sels(GPIO_RX_BANK, "1111111111111111");
384 hal_gpio_set_ddr(GPIO_TX_BANK, 0xffff, 0xffff);
385 hal_gpio_set_ddr(GPIO_RX_BANK, 0xffff, 0xffff);
389 // initialize double buffering state machine for ethernet -> DSP Tx
391 dbsm_init(&dsp_tx_sm, DSP_TX_BUF_0,
392 &dsp_tx_recv_args, &dsp_tx_send_args,
396 // initialize double buffering state machine for DSP RX -> Ethernet
399 dbsm_init(&dsp_rx_sm, DSP_RX_BUF_0,
400 &dsp_rx_recv_args, &dsp_rx_send_args,
401 fw_sets_seqno_inspector);
404 dbsm_init(&dsp_rx_sm, DSP_RX_BUF_0,
405 &dsp_rx_recv_args, &dsp_rx_send_args,
409 // tell app_common that this dbsm could be sending to the ethernet
410 ac_could_be_sending_to_eth = &dsp_rx_sm;
413 // program tx registers
416 // kick off the state machine
417 dbsm_start(&dsp_tx_sm);
422 // hal_gpio_write(GPIO_TX_BANK, which, 0x8000);
425 buffer_irq_handler(0);
427 int pending = pic_regs->pending; // poll for under or overrun
429 if (pending & PIC_UNDERRUN_INT){
430 dbsm_handle_tx_underrun(&dsp_tx_sm);
431 pic_regs->pending = PIC_UNDERRUN_INT; // clear interrupt
435 if (pending & PIC_OVERRUN_INT){
436 dbsm_handle_rx_overrun(&dsp_rx_sm);
437 pic_regs->pending = PIC_OVERRUN_INT; // clear pending interrupt
439 // FIXME Figure out how to handle this robustly.
440 // Any buffers that are emptying should be allowed to drain...
443 // restart_streaming();
444 // FIXME report error
447 // FIXME report error