diff options
Diffstat (limited to 'firmware/microblaze/apps/txrx_uhd.c')
| -rw-r--r-- | firmware/microblaze/apps/txrx_uhd.c | 587 |
1 files changed, 0 insertions, 587 deletions
diff --git a/firmware/microblaze/apps/txrx_uhd.c b/firmware/microblaze/apps/txrx_uhd.c deleted file mode 100644 index 9c1873e1c..000000000 --- a/firmware/microblaze/apps/txrx_uhd.c +++ /dev/null @@ -1,587 +0,0 @@ -// -// Copyright 2010 Ettus Research LLC -// -/* - * Copyright 2007,2008 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 <lwip/ip.h> -#include <lwip/udp.h> -#include "u2_init.h" -#include "memory_map.h" -#include "spi.h" -#include "hal_io.h" -#include "buffer_pool.h" -#include "pic.h" -#include <stdbool.h> -#include "ethernet.h" -#include "nonstdio.h" -#include "dbsm.h" -#include <net/padded_eth_hdr.h> -#include <net_common.h> -#include "memcpy_wa.h" -#include <stddef.h> -#include <stdlib.h> -#include <string.h> -#include "clocks.h" -#include "usrp2/fw_common.h" -#include <i2c_async.h> -#include <i2c.h> -#include <ethertype.h> -#include <arp_cache.h> -#include "udp_fw_update.h" - -/* - * Full duplex Tx and Rx between ethernet 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 eth flow - * Buffers 4 and 5 are used to double-buffer the eth to DSP Tx eth flow - */ -//#define CPU_RX_BUF 0 // eth -> cpu - -#define DSP_RX_BUF_0 2 // dsp rx -> eth (double buffer) -#define DSP_RX_BUF_1 3 // dsp rx -> eth -#define DSP_TX_BUF_0 4 // eth -> dsp tx (double buffer) -#define DSP_TX_BUF_1 5 // eth -> dsp tx - -/* - * ================================================================ - * configure DSP TX double buffering state machine (eth -> dsp) - * ================================================================ - */ - -// DSP Tx reads ethernet header words -#define DSP_TX_FIRST_LINE ((sizeof(padded_eth_hdr_t) + sizeof(struct ip_hdr) + sizeof(struct udp_hdr))/sizeof(uint32_t)) - -// Receive from ethernet -buf_cmd_args_t dsp_tx_recv_args = { - PORT_ETH, - 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 -> eth) - * ================================================================ - */ - -static const uint32_t rx_ctrl_word = 1 << 16; - -// DSP Rx writes ethernet header words -#define DSP_RX_FIRST_LINE sizeof(rx_ctrl_word)/sizeof(uint32_t) - -static bool dbsm_rx_inspector(dbsm_t *sm, int buf_this){ - size_t num_lines = buffer_pool_status->last_line[buf_this]-DSP_RX_FIRST_LINE; - ((uint32_t*)buffer_ram(buf_this))[0] = (num_lines*sizeof(uint32_t)) | (1 << 16); - return false; -} - -// receive from DSP -buf_cmd_args_t dsp_rx_recv_args = { - PORT_DSP, - DSP_RX_FIRST_LINE, - BP_LAST_LINE -}; - -// send to ETH -buf_cmd_args_t dsp_rx_send_args = { - PORT_ETH, - 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. -eth_mac_addr_t host_mac_addr; - -static void setup_network(void); - -// ---------------------------------------------------------------- -// the fast-path setup global variables -// ---------------------------------------------------------------- -static eth_mac_addr_t fp_mac_addr_src, fp_mac_addr_dst; -static struct socket_address fp_socket_src, fp_socket_dst; - -// ---------------------------------------------------------------- -void start_rx_streaming_cmd(void); -void stop_rx_cmd(void); - -static void print_ip_addr(const void *t){ - uint8_t *p = (uint8_t *)t; - printf("%d.%d.%d.%d", p[0], p[1], p[2], p[3]); -} - -void handle_udp_data_packet( - struct socket_address src, struct socket_address dst, - unsigned char *payload, int payload_len -){ - //its a tiny payload, load the fast-path variables - fp_mac_addr_src = *ethernet_mac_addr(); - arp_cache_lookup_mac(&src.addr, &fp_mac_addr_dst); - fp_socket_src = dst; - fp_socket_dst = src; - printf("Storing for fast path:\n"); - printf(" source mac addr: "); - print_mac_addr(fp_mac_addr_src.addr); newline(); - printf(" source ip addr: "); - print_ip_addr(&fp_socket_src.addr); newline(); - printf(" source udp port: %d\n", fp_socket_src.port); - printf(" destination mac addr: "); - print_mac_addr(fp_mac_addr_dst.addr); newline(); - printf(" destination ip addr: "); - print_ip_addr(&fp_socket_dst.addr); newline(); - printf(" destination udp port: %d\n", fp_socket_dst.port); - newline(); - - //setup network and vrt - setup_network(); - - // kick off the state machine - dbsm_start(&dsp_rx_sm); - -} - -#define OTW_GPIO_BANK_TO_NUM(bank) \ - (((bank) == USRP2_DIR_RX)? (GPIO_RX_BANK) : (GPIO_TX_BANK)) - -//setup the output data -static usrp2_ctrl_data_t ctrl_data_out; -static struct socket_address i2c_src; -static struct socket_address spi_src; - -static volatile bool i2c_done = false; -void i2c_read_done_callback(void) { - //printf("I2C read done callback\n"); - i2c_async_data_ready(ctrl_data_out.data.i2c_args.data); - i2c_done = true; - i2c_register_callback(0); -} - -void i2c_write_done_callback(void) { - //printf("I2C write done callback\n"); - i2c_done = true; - i2c_register_callback(0); -} - -static volatile bool spi_done = false; -static volatile uint32_t spi_readback_data; -void get_spi_readback_data(void) { - ctrl_data_out.data.spi_args.data = spi_get_data(); - spi_done = true; - spi_register_callback(0); -} - -void handle_udp_ctrl_packet( - struct socket_address src, struct socket_address dst, - unsigned char *payload, int payload_len -){ - //printf("Got ctrl packet #words: %d\n", (int)payload_len); - const usrp2_ctrl_data_t *ctrl_data_in = (usrp2_ctrl_data_t *)payload; - uint32_t ctrl_data_in_id = ctrl_data_in->id; - - //ensure that the protocol versions match - if (payload_len >= sizeof(uint32_t) && ctrl_data_in->proto_ver != USRP2_FW_COMPAT_NUM){ - printf("!Error in control packet handler: Expected compatibility number %d, but got %d\n", - USRP2_FW_COMPAT_NUM, ctrl_data_in->proto_ver - ); - ctrl_data_in_id = USRP2_CTRL_ID_WAZZUP_BRO; - } - - //ensure that this is not a short packet - if (payload_len < sizeof(usrp2_ctrl_data_t)){ - printf("!Error in control packet handler: Expected payload length %d, but got %d\n", - (int)sizeof(usrp2_ctrl_data_t), payload_len - ); - ctrl_data_in_id = USRP2_CTRL_ID_HUH_WHAT; - } - - //setup the output data - ctrl_data_out.proto_ver = USRP2_FW_COMPAT_NUM; - ctrl_data_out.id=USRP2_CTRL_ID_HUH_WHAT; - ctrl_data_out.seq=ctrl_data_in->seq; - - //handle the data based on the id - switch(ctrl_data_in_id){ - - /******************************************************************* - * Addressing - ******************************************************************/ - case USRP2_CTRL_ID_WAZZUP_BRO: - ctrl_data_out.id = USRP2_CTRL_ID_WAZZUP_DUDE; - memcpy(&ctrl_data_out.data.ip_addr, get_ip_addr(), sizeof(struct ip_addr)); - send_udp_pkt(USRP2_UDP_CTRL_PORT, src, &ctrl_data_out, sizeof(ctrl_data_out)); - break; - - /******************************************************************* - * SPI - ******************************************************************/ - case USRP2_CTRL_ID_TRANSACT_ME_SOME_SPI_BRO:{ - //transact - bool success = spi_async_transact( - //(ctrl_data_in->data.spi_args.readback == 0)? SPI_TXONLY : SPI_TXRX, - ctrl_data_in->data.spi_args.dev, //which device - ctrl_data_in->data.spi_args.data, //32 bit data - ctrl_data_in->data.spi_args.num_bits, //length in bits - (ctrl_data_in->data.spi_args.mosi_edge == USRP2_CLK_EDGE_RISE)? SPIF_PUSH_FALL : SPIF_PUSH_RISE | //flags - (ctrl_data_in->data.spi_args.miso_edge == USRP2_CLK_EDGE_RISE)? SPIF_LATCH_RISE : SPIF_LATCH_FALL, - get_spi_readback_data //callback - ); - - //load output - ctrl_data_out.id = USRP2_CTRL_ID_OMG_TRANSACTED_SPI_DUDE; - spi_src = src; - } -// send_udp_pkt(USRP2_UDP_CTRL_PORT, src, &ctrl_data_out, sizeof(ctrl_data_out)); - break; - - /******************************************************************* - * I2C - ******************************************************************/ - case USRP2_CTRL_ID_DO_AN_I2C_READ_FOR_ME_BRO:{ - uint8_t num_bytes = ctrl_data_in->data.i2c_args.bytes; - i2c_register_callback(i2c_read_done_callback); - i2c_async_read( - ctrl_data_in->data.i2c_args.addr, - num_bytes - ); - i2c_src = src; -// i2c_dst = dst; - ctrl_data_out.id = USRP2_CTRL_ID_HERES_THE_I2C_DATA_DUDE; - ctrl_data_out.data.i2c_args.bytes = num_bytes; - } - break; - - case USRP2_CTRL_ID_WRITE_THESE_I2C_VALUES_BRO:{ - uint8_t num_bytes = ctrl_data_in->data.i2c_args.bytes; - i2c_register_callback(i2c_read_done_callback); - i2c_async_write( - ctrl_data_in->data.i2c_args.addr, - ctrl_data_in->data.i2c_args.data, - num_bytes - ); - i2c_src = src; -// i2c_dst = dst; - ctrl_data_out.id = USRP2_CTRL_ID_COOL_IM_DONE_I2C_WRITE_DUDE; - ctrl_data_out.data.i2c_args.bytes = num_bytes; - } - break; - - /******************************************************************* - * Peek and Poke Register - ******************************************************************/ - case USRP2_CTRL_ID_POKE_THIS_REGISTER_FOR_ME_BRO: - if (0){//ctrl_data_in->data.poke_args.addr < 0xC000){ - printf("error! tried to poke into 0x%x\n", ctrl_data_in->data.poke_args.addr); - } - else switch(ctrl_data_in->data.poke_args.num_bytes){ - case sizeof(uint64_t): - *((uint32_t *) ctrl_data_in->data.poke_args.addrhi) = (uint32_t)ctrl_data_in->data.poke_args.datahi; - //continue to uint32_t for low addr: - - case sizeof(uint32_t): - *((uint32_t *) ctrl_data_in->data.poke_args.addr) = (uint32_t)ctrl_data_in->data.poke_args.data; - break; - - case sizeof(uint16_t): - *((uint16_t *) ctrl_data_in->data.poke_args.addr) = (uint16_t)ctrl_data_in->data.poke_args.data; - break; - - case sizeof(uint8_t): - *((uint8_t *) ctrl_data_in->data.poke_args.addr) = (uint8_t)ctrl_data_in->data.poke_args.data; - break; - - } - ctrl_data_out.id = USRP2_CTRL_ID_OMG_POKED_REGISTER_SO_BAD_DUDE; - send_udp_pkt(USRP2_UDP_CTRL_PORT, src, &ctrl_data_out, sizeof(ctrl_data_out)); - break; - - case USRP2_CTRL_ID_PEEK_AT_THIS_REGISTER_FOR_ME_BRO: - switch(ctrl_data_in->data.poke_args.num_bytes){ - case sizeof(uint64_t): - ctrl_data_out.data.poke_args.datahi = *((uint32_t *) ctrl_data_in->data.poke_args.addrhi); - //continue to uint32_t for low addr: - - case sizeof(uint32_t): - ctrl_data_out.data.poke_args.data = *((uint32_t *) ctrl_data_in->data.poke_args.addr); - break; - - case sizeof(uint16_t): - ctrl_data_out.data.poke_args.data = *((uint16_t *) ctrl_data_in->data.poke_args.addr); - break; - - case sizeof(uint8_t): - ctrl_data_out.data.poke_args.data = *((uint8_t *) ctrl_data_in->data.poke_args.addr); - break; - - } - ctrl_data_out.id = USRP2_CTRL_ID_WOAH_I_DEFINITELY_PEEKED_IT_DUDE; - send_udp_pkt(USRP2_UDP_CTRL_PORT, src, &ctrl_data_out, sizeof(ctrl_data_out)); - break; - - case USRP2_CTRL_ID_SO_LIKE_CAN_YOU_READ_THIS_UART_BRO:{ - //executes a readline()-style read, up to num_bytes long, up to and including newline - int num_bytes = ctrl_data_in->data.uart_args.bytes; - if(num_bytes > 20) num_bytes = 20; - num_bytes = fngets_timeout(ctrl_data_in->data.uart_args.dev, (char *) ctrl_data_out.data.uart_args.data, num_bytes); - ctrl_data_out.id = USRP2_CTRL_ID_I_HELLA_READ_THAT_UART_DUDE; - ctrl_data_out.data.uart_args.bytes = num_bytes; - break; - } - - case USRP2_CTRL_ID_HEY_WRITE_THIS_UART_FOR_ME_BRO:{ - int num_bytes = ctrl_data_in->data.uart_args.bytes; - if(num_bytes > 20) num_bytes = 20; - //before we write to the UART, we flush the receive buffer - //this assumes that we're interested in the reply - hal_uart_rx_flush(ctrl_data_in->data.uart_args.dev); - fnputstr(ctrl_data_in->data.uart_args.dev, (char *) ctrl_data_in->data.uart_args.data, num_bytes); - ctrl_data_out.id = USRP2_CTRL_ID_MAN_I_TOTALLY_WROTE_THAT_UART_DUDE; - ctrl_data_out.data.uart_args.bytes = num_bytes; - break; - } - - default: - ctrl_data_out.id = USRP2_CTRL_ID_HUH_WHAT; - send_udp_pkt(USRP2_UDP_CTRL_PORT, src, &ctrl_data_out, sizeof(ctrl_data_out)); - } - -} - -/* - * Called when an ethernet packet is received. - * Return true if we handled it here, otherwise - * it'll be passed on to the DSP Tx pipe - */ -static bool -eth_pkt_inspector(dbsm_t *sm, int bufno) -{ - //point me to the ethernet frame - uint32_t *buff = (uint32_t *)buffer_ram(bufno); - - //treat this as fast-path data? - // We have to do this operation as fast as possible. - // Therefore, we do not check all the headers, - // just check that the udp port matches - // and that the vrt header is non zero. - // In the future, a hardware state machine will do this... - if ( //warning! magic numbers approaching.... - (((buff + ((2 + 14 + 20)/sizeof(uint32_t)))[0] & 0xffff) == USRP2_UDP_DATA_PORT) && - ((buff + ((2 + 14 + 20 + 8)/sizeof(uint32_t)))[1] != USRP2_INVALID_VRT_HEADER) - ) return false; - - //test if its an ip recovery packet - typedef struct{ - padded_eth_hdr_t eth_hdr; - char code[4]; - union { - struct ip_addr ip_addr; - } data; - }recovery_packet_t; - recovery_packet_t *recovery_packet = (recovery_packet_t *)buff; - if (recovery_packet->eth_hdr.ethertype == 0xbeee && strncmp(recovery_packet->code, "addr", 4) == 0){ - printf("Got ip recovery packet: "); print_ip_addr(&recovery_packet->data.ip_addr); newline(); - set_ip_addr(&recovery_packet->data.ip_addr); - return true; - } - - //pass it to the slow-path handler - size_t len = buffer_pool_status->last_line[bufno] - 3; - handle_eth_packet(buff, len); - return true; -} - -//------------------------------------------------------------------ - -/* - * 1's complement sum for IP and UDP headers - * - * init chksum to zero to start. - */ -static unsigned int -CHKSUM(unsigned int x, unsigned int *chksum) -{ - *chksum += x; - *chksum = (*chksum & 0xffff) + (*chksum>>16); - *chksum = (*chksum & 0xffff) + (*chksum>>16); - return x; -} - -/* - * Called when eth phy state changes (w/ interrupts disabled) - */ -volatile bool link_is_up = false; // eth handler sets this -void -link_changed_callback(int speed) -{ - link_is_up = speed != 0; - hal_set_leds(link_is_up ? LED_RJ45 : 0x0, LED_RJ45); - printf("\neth link changed: speed = %d\n", speed); - if (link_is_up) send_gratuitous_arp(); -} - -static void setup_network(void){ - - //setup ethernet header machine - sr_udp_sm->eth_hdr.mac_dst_0_1 = (fp_mac_addr_dst.addr[0] << 8) | fp_mac_addr_dst.addr[1]; - sr_udp_sm->eth_hdr.mac_dst_2_3 = (fp_mac_addr_dst.addr[2] << 8) | fp_mac_addr_dst.addr[3]; - sr_udp_sm->eth_hdr.mac_dst_4_5 = (fp_mac_addr_dst.addr[4] << 8) | fp_mac_addr_dst.addr[5]; - sr_udp_sm->eth_hdr.mac_src_0_1 = (fp_mac_addr_src.addr[0] << 8) | fp_mac_addr_src.addr[1]; - sr_udp_sm->eth_hdr.mac_src_2_3 = (fp_mac_addr_src.addr[2] << 8) | fp_mac_addr_src.addr[3]; - sr_udp_sm->eth_hdr.mac_src_4_5 = (fp_mac_addr_src.addr[4] << 8) | fp_mac_addr_src.addr[5]; - sr_udp_sm->eth_hdr.ether_type = ETHERTYPE_IPV4; - - //setup ip header machine - unsigned int chksum = 0; - sr_udp_sm->ip_hdr.ver_ihl_tos = CHKSUM(0x4500, &chksum); // IPV4, 5 words of header (20 bytes), TOS=0 - sr_udp_sm->ip_hdr.total_length = UDP_SM_INS_IP_LEN; // Don't checksum this line in SW - sr_udp_sm->ip_hdr.identification = CHKSUM(0x0000, &chksum); // ID - sr_udp_sm->ip_hdr.flags_frag_off = CHKSUM(0x4000, &chksum); // don't fragment - sr_udp_sm->ip_hdr.ttl_proto = CHKSUM(0x2011, &chksum); // TTL=32, protocol = UDP (17 decimal) - //sr_udp_sm->ip_hdr.checksum .... filled in below - uint32_t src_ip_addr = fp_socket_src.addr.addr; - uint32_t dst_ip_addr = fp_socket_dst.addr.addr; - sr_udp_sm->ip_hdr.src_addr_high = CHKSUM(src_ip_addr >> 16, &chksum); // IP src high - sr_udp_sm->ip_hdr.src_addr_low = CHKSUM(src_ip_addr & 0xffff, &chksum); // IP src low - sr_udp_sm->ip_hdr.dst_addr_high = CHKSUM(dst_ip_addr >> 16, &chksum); // IP dst high - sr_udp_sm->ip_hdr.dst_addr_low = CHKSUM(dst_ip_addr & 0xffff, &chksum); // IP dst low - sr_udp_sm->ip_hdr.checksum = UDP_SM_INS_IP_HDR_CHKSUM | (chksum & 0xffff); - - //setup the udp header machine - sr_udp_sm->udp_hdr.src_port = fp_socket_src.port; - sr_udp_sm->udp_hdr.dst_port = fp_socket_dst.port; - sr_udp_sm->udp_hdr.length = UDP_SM_INS_UDP_LEN; - sr_udp_sm->udp_hdr.checksum = UDP_SM_LAST_WORD; // zero UDP checksum -} - -inline static void -buffer_irq_handler(unsigned irq) -{ - uint32_t status = buffer_pool_status->status; - - dbsm_process_status(&dsp_tx_sm, status); - dbsm_process_status(&dsp_rx_sm, status); -} - -int -main(void) -{ - u2_init(); - -//we do this to see if we should set a default ip addr or not -#ifdef USRP2P - bool safe_fw = find_safe_booted_flag(); - set_safe_booted_flag(0); - if(safe_fw) { - set_default_ip_addr(); - set_default_mac_addr(); - } -#endif - - putstr("\nTxRx-NEWETH\n"); - print_mac_addr(ethernet_mac_addr()->addr); - newline(); - print_ip_addr(get_ip_addr()); newline(); - printf("FPGA compatibility number: %d\n", USRP2_FPGA_COMPAT_NUM); - printf("Firmware compatibility number: %d\n", USRP2_FW_COMPAT_NUM); - - //1) register the addresses into the network stack - register_mac_addr(ethernet_mac_addr()); - register_ip_addr(get_ip_addr()); - - //2) register callbacks for udp ports we service - register_udp_listener(USRP2_UDP_CTRL_PORT, handle_udp_ctrl_packet); - register_udp_listener(USRP2_UDP_DATA_PORT, handle_udp_data_packet); - register_udp_listener(USRP2_UDP_UPDATE_PORT, handle_udp_fw_update_packet); - - //3) setup ethernet hardware to bring the link up - ethernet_register_link_changed_callback(link_changed_callback); - ethernet_init(); - - // 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); - - - // initialize double buffering state machine for DSP RX -> Ethernet - - dbsm_init(&dsp_rx_sm, DSP_RX_BUF_0, - &dsp_rx_recv_args, &dsp_rx_send_args, - dbsm_rx_inspector); - - sr_tx_ctrl->clear_state = 1; - bp_clear_buf(DSP_TX_BUF_0); - bp_clear_buf(DSP_TX_BUF_1); - - // kick off the state machine - dbsm_start(&dsp_tx_sm); - - //int which = 0; - - while(1){ - // hal_gpio_write(GPIO_TX_BANK, which, 0x8000); - // which ^= 0x8000; - - buffer_irq_handler(0); - - if(i2c_done) { - i2c_done = false; - send_udp_pkt(USRP2_UDP_CTRL_PORT, i2c_src, &ctrl_data_out, sizeof(ctrl_data_out)); - //printf("Sending UDP packet from main loop for I2C...\n"); - } - - if(spi_done) { - spi_done = false; - send_udp_pkt(USRP2_UDP_CTRL_PORT, spi_src, &ctrl_data_out, sizeof(ctrl_data_out)); - } - - 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... - - putchar('O'); - } - } -} |