From 8171547b6cf8eaf95901f6f4fbc47c1720caf39a Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Thu, 15 Jul 2010 18:47:07 -0700 Subject: usrp2: remove mb intervention on outgoing packets --- firmware/microblaze/apps/txrx_uhd.c | 34 ++++++---------------------------- 1 file changed, 6 insertions(+), 28 deletions(-) (limited to 'firmware') diff --git a/firmware/microblaze/apps/txrx_uhd.c b/firmware/microblaze/apps/txrx_uhd.c index 99c149d45..b81d32b2d 100644 --- a/firmware/microblaze/apps/txrx_uhd.c +++ b/firmware/microblaze/apps/txrx_uhd.c @@ -92,15 +92,10 @@ dbsm_t dsp_tx_sm; // the state machine * ================================================================ */ -typedef struct{ - uint32_t control_word; - uint32_t vrt_header[]; -} rx_dsp_buff_t; - -#define MK_RX_CTRL_WORD(num_words) (((num_words)*sizeof(uint32_t)) | (1 << 16)) +static const uint32_t rx_ctrl_word = 1 << 16; // DSP Rx writes ethernet header words -#define DSP_RX_FIRST_LINE ((offsetof(rx_dsp_buff_t, vrt_header))/sizeof(uint32_t)) +#define DSP_RX_FIRST_LINE sizeof(rx_ctrl_word)/sizeof(uint32_t) // receive from DSP buf_cmd_args_t dsp_rx_recv_args = { @@ -423,22 +418,6 @@ static void setup_network(void){ sr_udp_sm->udp_hdr.checksum = UDP_SM_LAST_WORD; // zero UDP checksum } -/* - * This is called when the DSP Rx chain has filled in a packet. - */ -bool -fw_sets_seqno_inspector(dbsm_t *sm, int buf_this) // returns false -{ - // insert the correct length into the control word and vrt header - rx_dsp_buff_t *buff = (rx_dsp_buff_t*)buffer_ram(buf_this); - size_t vrt_len = buffer_pool_status->last_line[buf_this]-DSP_RX_FIRST_LINE; - buff->control_word = MK_RX_CTRL_WORD(vrt_len); - buff->vrt_header[0] = (buff->vrt_header[0] & ~VRTH_PKT_SIZE_MASK) | (vrt_len & VRTH_PKT_SIZE_MASK); - - return false; // we didn't handle the packet -} - - inline static void buffer_irq_handler(unsigned irq) { @@ -479,16 +458,15 @@ main(void) dbsm_init(&dsp_rx_sm, DSP_RX_BUF_0, &dsp_rx_recv_args, &dsp_rx_send_args, - fw_sets_seqno_inspector); - - - // tell app_common that this dbsm could be sending to the ethernet - ac_could_be_sending_to_eth = &dsp_rx_sm; + dbsm_nop_inspector); sr_tx_ctrl->clear_state = 1; bp_clear_buf(DSP_TX_BUF_0); bp_clear_buf(DSP_TX_BUF_1); + buffer_ram(DSP_RX_BUF_0)[0] = rx_ctrl_word; + buffer_ram(DSP_RX_BUF_0)[1] = rx_ctrl_word; + // kick off the state machine dbsm_start(&dsp_tx_sm); -- cgit v1.2.3