static void MACNET_rx_free
(
/* [IN] the PCB to enqueue */
PCB_PTR pcb_ptr
)
{
ENET_CONTEXT_STRUCT_PTR enet_ptr = (ENET_CONTEXT_STRUCT_PTR)pcb_ptr->PRIVATE;
MACNET_CONTEXT_STRUCT_PTR macnet_context_ptr = (MACNET_CONTEXT_STRUCT_PTR) enet_ptr->MAC_CONTEXT_PTR;
#if ENETCFG_SUPPORT_FRAGMENTED_PCBS
uint_32 i;
#endif
/*
** This function can be called from any context, and it needs mutual
** exclusion with itself.
*/
MACNET_int_disable();
#if ENETCFG_SUPPORT_FRAGMENTED_PCBS
for (i=0;pcb_ptr->FRAG[i].FRAGMENT;i++) {
ENET_Enqueue_Buffer((pointer*)&macnet_context_ptr->RX_BUFFERS, pcb_ptr->FRAG[i].FRAGMENT );
pcb_ptr->FRAG[i].FRAGMENT = NULL;
}
#else
ENET_Enqueue_Buffer((pointer*)&macnet_context_ptr->RX_BUFFERS, pcb_ptr->FRAG[0].FRAGMENT );
pcb_ptr->FRAG[0].FRAGMENT = NULL;
#endif
QADD(macnet_context_ptr->RxPCBHead, macnet_context_ptr->RxPCBTail, pcb_ptr);
MACNET_add_buffers_to_rx_ring(macnet_context_ptr);
MACNET_int_enable();
}
void MACNET_add_buffers_to_rx_ring(MACNET_CONTEXT_STRUCT_PTR macnet_context_ptr)
{
ENET_MemMapPtr macnet_ptr = macnet_context_ptr->MACNET_ADDRESS;
VENET_BD_STRUCT_PTR bd_ptr;
uchar_ptr buf;
if (macnet_ptr == NULL) return;
/*
** This function can be called from any context, and it needs mutual
** exclusion with itself.
*/
MACNET_int_disable();
while (macnet_context_ptr->ActiveRxBDs < macnet_context_ptr->NumRxBDs) {
bd_ptr = &macnet_context_ptr->MACNET_RX_RING_PTR[macnet_context_ptr->LastRxBD];
_DCACHE_INVALIDATE_MBYTES((pointer)bd_ptr, sizeof(ENET_BD_STRUCT));
/* Initialize the descriptor and give it to the MACNET */
buf = (uchar_ptr)HOST_TO_BE_LONG((uint_32)ENET_Dequeue_Buffer((pointer *) &macnet_context_ptr->RX_BUFFERS));
if (buf == NULL) {
MACNET_int_enable();
return;
}
bd_ptr->BUFFER = buf;
bd_ptr->LENGTH = 0;
/*
** The processor doesn't clear control bits when errors don't occur;
** it just sets bits when errors do occur. So we clear all the
** control bits before enqueueing the descriptor.
*/
bd_ptr->CONTROL &= HOST_TO_BE_SHORT_CONST(ENET_BD_ETHER_RX_WRAP);
/*
** Add the PCB to the receive PCB queue (linked via PRIVATE) and
** increment the tail to the next descriptor
*/
BD_INC(macnet_context_ptr->LastRxBD, macnet_context_ptr->NumRxBDs);
macnet_context_ptr->ActiveRxBDs++;
bd_ptr->CONTROL |= HOST_TO_BE_SHORT_CONST(ENET_BD_ETHER_RX_EMPTY);
/* In case Enhanced BD are used allow interrupt generation */
bd_ptr->CONTROL_EXT0 |= HOST_TO_BE_SHORT_CONST(ENET_BD_EXT0_ETHER_RX_GENERATE_INTR);
_DCACHE_FLUSH_MBYTES((pointer)bd_ptr, sizeof(ENET_BD_STRUCT));
/*
** Signals the MACNET that empty buffers are available.
*/
macnet_ptr->RDAR = ENET_RDAR_RDAR_MASK;
}
MACNET_int_enable();
}
static void MACNET_rx_free_specific
(
MACNET_CONTEXT_STRUCT_PTR macnet_context_ptr,
/* [IN] the PCB to enqueue */
PCB_PTR pcb_ptr,
pointer * list
)
{
/*
** This function can be called from any context, and it needs mutual
** exclusion with itself.
*/
MACNET_int_disable();
ENET_Enqueue_Buffer(list, pcb_ptr->FRAG[0].FRAGMENT );
pcb_ptr->FRAG[0].FRAGMENT = NULL;
QADD(macnet_context_ptr->RxPCBHead, macnet_context_ptr->RxPCBTail, pcb_ptr);
MACNET_int_enable();
}
uint32_t MACNET_initialize
(
ENET_CONTEXT_STRUCT_PTR enet_ptr
)
{
MACNET_CONTEXT_STRUCT_PTR macnet_context_ptr=NULL;
ENET_MemMapPtr macnet_ptr;
VENET_BD_STRUCT_PTR bd_ptr;
unsigned char *buf_ptr;
MACNET_RX_PCB_PTR pcb_ptr;
uint32_t i, rxsize, txsize, ssize, lsize, pcbsize,rx_pcb_size, large_packet_size, rcr;
uint32_t timeout, error = ENET_OK;
bool bOK;
#if ENETCFG_SUPPORT_PTP
MACNET_PTP_PRIVATE_PTR macnet_ptp_ptr = NULL;
#endif /* ENETCFG_SUPPORT_PTP */
// Initialize the MACNET I/O Pins
MACNET_io_init(enet_ptr->PARAM_PTR->ENET_IF->MAC_NUMBER);
macnet_ptr = MACNET_get_base_address(enet_ptr->PARAM_PTR->ENET_IF->MAC_NUMBER);
if (macnet_ptr == NULL) {
return ENETERR_INVALID_DEVICE;
}
// currently limit number of TX BDs to 32, as a bitmask is used in the free function.
if (enet_ptr->PARAM_PTR->NUM_TX_ENTRIES > 32) {
return ENETERR_INVALID_INIT_PARAM;
}
/*
** This function can be called from any context, and it needs mutual
** exclusion with itself.
*/
MACNET_int_disable();
macnet_context_ptr = _mem_alloc_system_zero(sizeof(MACNET_CONTEXT_STRUCT));
IF_ERROR_EXIT((NULL==macnet_context_ptr), ENETERR_ALLOC_MAC_CONTEXT);
_mem_set_type((void *)macnet_context_ptr, MEM_TYPE_IO_ENET_MAC_CONTEXT_STRUCT);
enet_ptr->MAC_CONTEXT_PTR = (void *) macnet_context_ptr;
macnet_context_ptr->MACNET_ADDRESS = macnet_ptr;
macnet_context_ptr->PHY_PTR = MACNET_get_base_address(enet_ptr->PARAM_PTR->ENET_IF->PHY_NUMBER);
/* Stop the chip */
macnet_ptr->ECR = ENET_ECR_RESET_MASK;
/* wait until the initialization cycle completes */
timeout = 0;
while ((macnet_ptr->ECR & ENET_ECR_RESET_MASK) && (timeout<MACNET_RESET_TIMEOUT)){
_time_delay(1);
timeout++;
}
IF_ERROR_EXIT((macnet_ptr->ECR & ENET_ECR_RESET_MASK), ENETERR_INIT_FAILED);
/* Disable all MACNET interrupts */
macnet_ptr->EIMR = 0;
/* clear any pending interrpts */
macnet_ptr->EIR = ENET_EIR_ALL_PENDING;
macnet_context_ptr->NumRxBDs = enet_ptr->PARAM_PTR->NUM_RX_ENTRIES;
macnet_context_ptr->NumTxBDs = enet_ptr->PARAM_PTR->NUM_TX_ENTRIES;
// Compute aligned buffer sizes
if (enet_ptr->PARAM_PTR->TX_BUFFER_SIZE) {
macnet_context_ptr->AlignedTxBufferSize = MACNET_TX_ALIGN(enet_ptr->PARAM_PTR->TX_BUFFER_SIZE);
} else {
macnet_context_ptr->AlignedTxBufferSize = MACNET_TX_ALIGN(enet_ptr->MaxTxFrameSize);
}
if (enet_ptr->PARAM_PTR->RX_BUFFER_SIZE) {
macnet_context_ptr->AlignedRxBufferSize = MACNET_RX_ALIGN(enet_ptr->PARAM_PTR->RX_BUFFER_SIZE);
} else {
macnet_context_ptr->AlignedRxBufferSize = MACNET_RX_ALIGN(enet_ptr->MaxRxFrameSize);
}
// Allocate the Transmit and Receive buffer descriptors
// TODO remake to using alloc_align fn
#if BSPCFG_HAS_SRAM_POOL && BSPCFG_ENET_SRAM_BUF
bd_ptr = (VENET_BD_STRUCT_PTR)_mem_alloc_system_zero_from(_BSP_sram_pool, (sizeof(ENET_BD_STRUCT)*(macnet_context_ptr->NumRxBDs+macnet_context_ptr->NumTxBDs))+MACNET_BD_ALIGNMENT);
#else
bd_ptr = (VENET_BD_STRUCT_PTR)_mem_alloc_system_zero_uncached((sizeof(ENET_BD_STRUCT)*(macnet_context_ptr->NumRxBDs+macnet_context_ptr->NumTxBDs))+MACNET_BD_ALIGNMENT);
#endif
IF_ERROR_EXIT((NULL == bd_ptr), ENETERR_ALLOC_BD);
_mem_set_type((void *)bd_ptr, MEM_TYPE_IO_BD_STRUCT);
macnet_context_ptr->UNALIGNED_RING_PTR = (void *) bd_ptr;
macnet_context_ptr->MACNET_RX_RING_PTR = (VENET_BD_STRUCT_PTR) MACNET_BD_ALIGN((uint32_t)bd_ptr);
macnet_context_ptr->MACNET_TX_RING_PTR = &macnet_context_ptr->MACNET_RX_RING_PTR[macnet_context_ptr->NumRxBDs];
/* Set wrap bit in last BD */
macnet_context_ptr->MACNET_RX_RING_PTR[macnet_context_ptr->NumRxBDs - 1].CONTROL = HOST_TO_BE_SHORT_CONST(ENET_BD_ETHER_RX_WRAP);
macnet_context_ptr->MACNET_TX_RING_PTR[macnet_context_ptr->NumTxBDs - 1].CONTROL = HOST_TO_BE_SHORT_CONST(ENET_BD_ETHER_TX_WRAP);
macnet_context_ptr->AvailableTxBDs = macnet_context_ptr->NumTxBDs;
// Allocate array to hold Transmit PCB pointers while they are queued for transmission
macnet_context_ptr->TxPCBS_PTR = (PCB_PTR *) _mem_alloc_system_zero(sizeof(PCB_PTR)*macnet_context_ptr->NumTxBDs);
IF_ERROR_EXIT((NULL==macnet_context_ptr->TxPCBS_PTR), ENETERR_ALLOC_PCB);
_mem_set_type((void *)macnet_context_ptr->TxPCBS_PTR, MEM_TYPE_IO_PCB_PTR);
// Allocate the Receive PCBs
rx_pcb_size = sizeof(MACNET_RX_PCB);
pcbsize = enet_ptr->PARAM_PTR->NUM_RX_PCBS * rx_pcb_size;
macnet_context_ptr->RX_PCB_BASE = (MACNET_RX_PCB_PTR) _mem_alloc_system_zero(pcbsize);
IF_ERROR_EXIT((NULL==macnet_context_ptr->RX_PCB_BASE), ENETERR_ALLOC_PCB);
_mem_set_type((void *)macnet_context_ptr->RX_PCB_BASE, MEM_TYPE_IO_PCB_STRUCT);
// Allocate the Transmit and Receive buffers
txsize = (enet_ptr->PARAM_PTR->NUM_TX_BUFFERS * macnet_context_ptr->AlignedTxBufferSize) + MACNET_TX_BUFFER_ALIGNMENT;
rxsize = (enet_ptr->PARAM_PTR->NUM_RX_BUFFERS * macnet_context_ptr->AlignedRxBufferSize) +MACNET_RX_BUFFER_ALIGNMENT;
ssize = (enet_ptr->PARAM_PTR->NUM_SMALL_BUFFERS * MACNET_SMALL_PACKET_SIZE);
large_packet_size = enet_ptr->PARAM_PTR->OPTIONS&ENET_OPTION_VLAN ? ENET_FRAMESIZE_VLAN : ENET_FRAMESIZE;
lsize = (enet_ptr->PARAM_PTR->NUM_LARGE_BUFFERS * large_packet_size);
#if BSPCFG_HAS_SRAM_POOL && BSPCFG_ENET_SRAM_BUF
buf_ptr = _mem_alloc_system_from(_BSP_sram_pool, rxsize + txsize + ssize + lsize);
#else
buf_ptr = _mem_alloc_system_uncached(rxsize + txsize + ssize + lsize); // temporary fix for cache problems... previously _mem_alloc_system
#endif
IF_ERROR_EXIT((NULL==buf_ptr), ENETERR_ALLOC_BUFFERS);
_mem_set_type(buf_ptr, MEM_TYPE_IO_ENET_BUFFERS);
macnet_context_ptr->UNALIGNED_BUFFERS = buf_ptr;
// Align to TX buffer boundary
buf_ptr = (unsigned char *)MACNET_TX_ALIGN((uint32_t)buf_ptr);
// Queue packets on TX Buffer Q.
macnet_context_ptr->TX_BUFFERS = NULL;
for (i=0;i<enet_ptr->PARAM_PTR->NUM_TX_BUFFERS;i++) {
ENET_Enqueue_Buffer((void **)&macnet_context_ptr->TX_BUFFERS, buf_ptr);
buf_ptr += macnet_context_ptr->AlignedTxBufferSize;
}
// Align to RX buffer boundary
buf_ptr = (unsigned char *)MACNET_RX_ALIGN((uint32_t)buf_ptr);
// Queue packets on RX Buffer Q.
macnet_context_ptr->RX_BUFFERS = NULL;
for (i=0;i<enet_ptr->PARAM_PTR->NUM_RX_BUFFERS;i++) {
ENET_Enqueue_Buffer((void **)&macnet_context_ptr->RX_BUFFERS, buf_ptr);
buf_ptr += macnet_context_ptr->AlignedRxBufferSize;
}
// Queue small packets on small buffer Q.
for (i=0;i<enet_ptr->PARAM_PTR->NUM_SMALL_BUFFERS;i++) {
ENET_Enqueue_Buffer((void **)&macnet_context_ptr->SMALL_BUFFERS, buf_ptr);
buf_ptr += MACNET_SMALL_PACKET_SIZE;
}
// Queue large packets on large buffer Q.
for (i=0;i<enet_ptr->PARAM_PTR->NUM_LARGE_BUFFERS;i++) {
ENET_Enqueue_Buffer((void **)&macnet_context_ptr->LARGE_BUFFERS, buf_ptr);
buf_ptr += large_packet_size;
}
// Enqueue the RX PCBs onto the receive PCB queue
pcb_ptr = macnet_context_ptr->RX_PCB_BASE;
for (i = 0; i < enet_ptr->PARAM_PTR->NUM_RX_PCBS; i++) {
QADD(macnet_context_ptr->RxPCBHead, macnet_context_ptr->RxPCBTail, (PCB_PTR) pcb_ptr);
pcb_ptr++;
}
// Fill up the receive ring
MACNET_add_buffers_to_rx_ring(macnet_context_ptr);
/* Program this station's Ethernet physical address */
macnet_ptr->PALR = (uint32_t)((enet_ptr->ADDRESS[0] << 24)|(enet_ptr->ADDRESS[1] << 16)|(enet_ptr->ADDRESS[2] << 8)|(enet_ptr->ADDRESS[3] << 0));
macnet_ptr->PAUR = (uint32_t)((enet_ptr->ADDRESS[4] << 24)|(enet_ptr->ADDRESS[5] << 16));
// Clear the individual hash table registers
macnet_ptr->IAUR = 0;
macnet_ptr->IALR = 0;
// Clear the group hash table registers
macnet_ptr->GAUR = 0;
macnet_ptr->GALR = 0;
/* Program receive buffer size */
macnet_ptr->MRBR = macnet_context_ptr->AlignedRxBufferSize;
// Configure start of Rx and Tx BD rings
macnet_ptr->RDSR = (uint32_t)(macnet_context_ptr->MACNET_RX_RING_PTR);
macnet_ptr->TDSR = (uint32_t)(macnet_context_ptr->MACNET_TX_RING_PTR);
// Set Receive Frame size
// NOTE: Oddly, the Receive Control Register (RCR) afmacnetts the transmit side too. The RCR is used to determine if the
// transmitter is babbling, which means, if the RX buffer size < Tx Buffer size, we can get babling transmitter
// errors if we set RCR to the maximum Receive frame length. We really have no choice but to set RCR to one
// of ENET_FRAMESIZE or ENET_FRAMESIZE_VLAN.
//
rcr = ENET_RCR_MII_MODE_MASK | (ENET_RCR_MAX_FL_MASK & (large_packet_size << ENET_RCR_MAX_FL_SHIFT));
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_RMII) {
rcr |= ENET_RCR_RMII_MODE_MASK;
} else if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_7WIRE) {
rcr &= ~ENET_RCR_MII_MODE_MASK;
}
if (enet_ptr->PARAM_PTR->MODE & ENET_10M)
{
rcr |= ENET_RCR_RMII_10T_MASK;
}
macnet_ptr->RCR = rcr;
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_MAC_LOOPBACK) {
macnet_ptr->RCR |= ENET_RCR_LOOP_MASK;
}
// Set Full/Half duplex based on mode.
if (enet_ptr->PARAM_PTR->MODE & ENET_HALF_DUPLEX) {
macnet_ptr->TCR = 0; // half duplex
} else {
macnet_ptr->TCR = 4; // full duplex
}
// Enable MII_SPEED register
i = (MACNET_device[enet_ptr->PARAM_PTR->ENET_IF->MAC_NUMBER].BUS_CLOCK / enet_ptr->PARAM_PTR->ENET_IF->PHY_MII_SPEED + 1) & ~1;
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_NO_PREAMBLE) {
i |= ENET_MSCR_DIS_PRE_MASK;
}
macnet_context_ptr->PHY_PTR->MSCR = i;
// Zero counters
macnet_ptr->MIBC |= ENET_MIBC_MIB_CLEAR_MASK;
// Install the ISRs
bOK = MACNET_install_isrs( enet_ptr, &MACNET_device[enet_ptr->PARAM_PTR->ENET_IF->MAC_NUMBER] );
IF_ERROR_EXIT(!bOK, ENETERR_INSTALL_ISR);
// Unmask transmit/receive interrupts
// NOTE: need to enable both RXF and RXB, but only TXB, as RXB does not get generated with RXF,
// but TXB does get generated with TXF
// However, on 52259, enabling RXB is resulting in an HBERR interrupt. RXB is not required, so leave it disabled.
macnet_ptr->EIMR = ENET_EIR_TXB_MASK | ENET_EIR_RXF_MASK;
// Enable MACNET
macnet_ptr->ECR = (ENET_ECR_ETHEREN_MASK | ENET_ECR_EN1588_MASK);// | 0x100;
// Discover PHY address if PHY_DISCOVER option is set
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_PHY_DISCOVER) {
bOK = (*enet_ptr->PARAM_PTR->ENET_IF->PHY_IF->DISCOVER)(enet_ptr);
IF_ERROR_EXIT(!bOK, ENETERR_INIT_FAILED);
} else {
// Set Phy address from initialization parameter
enet_ptr->PHY_ADDRESS = enet_ptr->PARAM_PTR->ENET_IF->PHY_ADDRESS;
}
/******* Support of TCP/IP offload engine.*******/
/* Transmit Accelerator Function Configuration. */
macnet_ptr->TACC = 0;
#if BSPCFG_ENET_HW_TX_IP_CHECKSUM
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_HW_TX_IP_CHECKSUM)
{
macnet_ptr->TACC |= ENET_TACC_IPCHK_MASK; /* Insert IP header checksum.*/
}
#endif
#if BSPCFG_ENET_HW_TX_PROTOCOL_CHECKSUM
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_HW_TX_PROTOCOL_CHECKSUM)
{
macnet_ptr->TACC |= ENET_TACC_PROCHK_MASK; /* Insert Protocol checksum.*/
}
#endif
/* Receive Accelerator Function Configuration. */
macnet_ptr->RACC = 0;
#if BSPCFG_ENET_HW_RX_IP_CHECKSUM
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_HW_RX_IP_CHECKSUM)
{
macnet_ptr->RACC |= ENET_RACC_IPDIS_MASK; /* Discard of frames with wrong IPv4 header checksum.*/
}
#endif
#if BSPCFG_ENET_HW_RX_PROTOCOL_CHECKSUM
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_HW_RX_PROTOCOL_CHECKSUM)
{
macnet_ptr->RACC |= ENET_RACC_PRODIS_MASK; /* Discard of frames with wrong protocol checksum.*/
}
#endif
#if BSPCFG_ENET_HW_RX_MAC_ERR
if (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_HW_RX_MAC_ERR)
{
macnet_ptr->RACC |= ENET_RACC_LINEDIS_MASK; /* Discard of frames with MAC layer errors.*/
}
#endif
if (
#if BSPCFG_ENET_HW_TX_IP_CHECKSUM || BSPCFG_ENET_HW_TX_PROTOCOL_CHECKSUM
(enet_ptr->PARAM_PTR->OPTIONS & (ENET_OPTION_HW_TX_IP_CHECKSUM|ENET_OPTION_HW_TX_PROTOCOL_CHECKSUM))||
#endif
(enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_STORE_AND_FORW) )
{
/* Transmit FIFO Watermark Register.
* The TFWR[STRFWD] bit must be set to use the checksum feature.
* In this case, the MAC starts to transmit data only when a complete
* frame is stored in the transmit FIFO.*/
macnet_ptr->TFWR = ENET_TFWR_STRFWD_MASK;
}
if (
#if BSPCFG_ENET_HW_RX_IP_CHECKSUM || BSPCFG_ENET_HW_RX_PROTOCOL_CHECKSUM
(enet_ptr->PARAM_PTR->OPTIONS & (ENET_OPTION_HW_RX_IP_CHECKSUM|ENET_OPTION_HW_RX_PROTOCOL_CHECKSUM))||
#endif
(enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_STORE_AND_FORW) )
{
/* Discarding is only available when the RX FIFO operates in store and forward
* mode (RSFL cleared).*/
macnet_ptr->RSFL = 0;
}
// Perform Phy initialization
bOK = (*enet_ptr->PARAM_PTR->ENET_IF->PHY_IF->INIT)(enet_ptr);
IF_ERROR_EXIT(!bOK, ENETERR_INIT_FAILED);
// Signals the MACNET that empty buffers are available.
// It is NECESSARY to do this AFTER enabling the MACNET.
macnet_ptr->RDAR = ENET_RDAR_RDAR_MASK;
//jm _mem_copy((void*)0x400d0000, (void*)0x3f400000, 0x400);
#if ENETCFG_SUPPORT_PTP
macnet_ptp_ptr = _mem_alloc_system_zero(sizeof(MACNET_PTP_PRIVATE));
IF_ERROR_EXIT((NULL==macnet_context_ptr), ENETERR_ALLOC_MAC_CONTEXT);
macnet_ptp_ptr->MACNET_PTR = macnet_context_ptr->MACNET_ADDRESS;
macnet_ptp_ptr->PTIMER_PRESENT = 1;
bOK = _lwevent_create(&(macnet_ptp_ptr->LWEVENT_PTP), 0);
IF_ERROR_EXIT(bOK, ENETERR_1588_LWEVENT);
macnet_ptp_ptr->TXSTAMP = (MACNET_PTP_TIME){0,0};
macnet_ptp_ptr->L2PCKS_PTR = NULL;
macnet_context_ptr->PTP_PRIV = macnet_ptp_ptr;
MACNET_ptp_init(enet_ptr);
if (macnet_ptp_ptr->PTIMER_PRESENT) {
/* Set Timer count */
MACNET_ptp_start(macnet_ptp_ptr, (enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_PTP_MASTER_CLK));
if(enet_ptr->PARAM_PTR->OPTIONS & ENET_OPTION_PTP_MASTER_CLK)
MACNET_ptp_set_master_base_address(macnet_ptr);
macnet_ptp_ptr->MACNET_PTR->ECR |= ENET_ECR_EN1588_MASK;
}
/* Enable timer-relative interrupts */
macnet_ptp_ptr->MACNET_PTR->EIMR |= (ENET_EIR_TS_TIMER_MASK | ENET_EIR_TS_AVAIL_MASK);
#endif /* ENETCFG_SUPPORT_PTP */
// control transfers to this point on any error, with error set to error code.
EXIT:
if (ENET_OK!=error) {
#if BSPCFG_ENET_RESTORE
MACNET_uninstall_all_isrs(enet_ptr);
#endif
MACNET_free_context(macnet_context_ptr);
}
MACNET_int_enable();
return error;
}
uint_32 MACNET_send
(
ENET_CONTEXT_STRUCT_PTR enet_ptr,
/* [IN] the Ethernet state structure */
PCB_PTR packet,
/* [IN] the packet to send */
uint_32 size,
/* [IN] total size of the packet */
uint_32 frags,
/* [IN] total fragments in the packet */
uint_32 flags
/* [IN] optional flags, zero = default */
)
{
MACNET_CONTEXT_STRUCT_PTR macnet_context_ptr = (MACNET_CONTEXT_STRUCT_PTR) enet_ptr->MAC_CONTEXT_PTR;
ENET_MemMapPtr macnet_ptr= macnet_context_ptr->MACNET_ADDRESS;
PCB_FRAGMENT_PTR frag_ptr;
VENET_BD_STRUCT_PTR tx_bd_ptr;
uint_32 len,totlen,frag;
uchar_ptr txmem;
boolean aligned;
uint_32 err = ENET_OK;
#if ENETCFG_SUPPORT_PTP
MACNET_PTP_DATA tmp_tx_time;
boolean wait_for_ts=FALSE;
#endif
if (macnet_ptr == NULL)
return ENETERR_INVALID_DEVICE;
MACNET_int_disable();
/*
** Make sure there aren't too many fragments. (We really should check
** this every time through the previous loop, but it is extremely
** unlikely that the fragment counter overflowed -- there would have
** to be over 2^32 fragments.)
*/
if (macnet_context_ptr->AvailableTxBDs < 1) {
ENET_INC_STATS(COMMON.ST_TX_MISSED);
err = ENETERR_SEND_FULL;
goto END;
}
#if BSPCFG_ENABLE_ENET_HISTOGRAM
{
uint_32 index = size>> ENET_HISTOGRAM_SHIFT;
if (index < ENET_HISTOGRAM_ENTRIES) {
ENET_INC_STATS(TX_HISTOGRAM[index]);
}
}
#endif
aligned = TRUE;
for (frag_ptr = packet->FRAG; frag_ptr->LENGTH; frag_ptr++) {
if (MACNET_TX_ALIGN((uint_32)frag_ptr->FRAGMENT)!= (uint_32)frag_ptr->FRAGMENT)
aligned = FALSE;
}
if (aligned) {
ENET_INC_STATS(TX_ALL_ALIGNED);
}
/*
** Enqueue the packet on the transmit ring. Don't set the ready
** bit in the first descriptor until all descriptors are enqueued.
*/
tx_bd_ptr = &macnet_context_ptr->MACNET_TX_RING_PTR[macnet_context_ptr->NextTxBD];
frag_ptr = packet->FRAG;
frag = (uint_32) frag_ptr->FRAGMENT;
if (frags > 1 || (MACNET_TX_ALIGN(frag)!= frag)) {
// Packet is fragmented and/or it is misaligned, needs to be copied
txmem = NULL;
// See if it fits in a small buffer
if (size <= MACNET_SMALL_PACKET_SIZE) {
// it does
txmem = ENET_Dequeue_Buffer((pointer *) &macnet_context_ptr->SMALL_BUFFERS);
}
// If it didn't fit, or the small alloc failed, try for a large buffer
if (txmem) {
// signal buffer is to be deallocated.
macnet_context_ptr->FREE_TX_SMALL |= (1<<macnet_context_ptr->NextTxBD);
ENET_INC_STATS(ST_TX_COPY_SMALL);
} else {
if (size <= macnet_context_ptr->AlignedTxBufferSize) {
txmem = ENET_Dequeue_Buffer((pointer *) &macnet_context_ptr->TX_BUFFERS);
}
if (txmem) {
// signal buffer is to be deallocated.
macnet_context_ptr->FREE_TX |= (1<<macnet_context_ptr->NextTxBD);
} else {
ENET_INC_STATS(COMMON.ST_TX_MISSED);
err = ENETERR_NO_TX_BUFFER;
goto END;
}
}
totlen = 0;
for (len = frag_ptr->LENGTH; len != 0; len = frag_ptr->LENGTH) {
_mem_copy(frag_ptr->FRAGMENT, txmem + totlen, len);
totlen += len;
frag_ptr++;
}
} else {
// Packet is not fragmented and it is not misaligned
totlen = frag_ptr->LENGTH;
txmem = frag_ptr->FRAGMENT;
ENET_INC_STATS(TX_ALIGNED);
}
// Flush the buffer from cache
_DCACHE_FLUSH_MBYTES(txmem, totlen);
// Invalidate the bd from cache
_DCACHE_INVALIDATE_MBYTES((pointer)tx_bd_ptr, sizeof(ENET_BD_STRUCT));
// set up the tx bd
tx_bd_ptr->CONTROL &= HOST_TO_BE_SHORT_CONST(ENET_BD_ETHER_TX_WRAP);
tx_bd_ptr->BUFFER = (uchar_ptr)HOST_TO_BE_LONG((uint_32)txmem);
tx_bd_ptr->LENGTH = HOST_TO_BE_SHORT(totlen);
tx_bd_ptr->CONTROL |= HOST_TO_BE_SHORT_CONST(ENET_BD_ETHER_TX_LAST | ENET_BD_ETHER_TX_SEND_CRC | ENET_BD_ETHER_TX_READY);
tx_bd_ptr->CONTROL_EXT0 |= HOST_TO_BE_SHORT_CONST(ENET_BD_EXT0_ETHER_TX_GENERATE_INTR);
#if ENETCFG_SUPPORT_PTP
if (macnet_context_ptr->PTP_PRIV->PTIMER_PRESENT)
{
/* PTP over Ethernet frames: Check the PTPv2 over Ethernet type (identifier) */
if((totlen > 44) &&
(*(uint_16 *)(txmem + MACNET_PTP_ETHER_PKT_TYPE_OFFS) == HOST_TO_BE_SHORT_CONST(MACNET_PACKET_TYPE_IEEE_802_3)))
{
/* Allow interrupt and timestamp generation */
tx_bd_ptr->CONTROL_EXT0 |= HOST_TO_BE_SHORT_CONST(ENET_BD_EXT0_ETHER_TX_TIMESTAMP);
tmp_tx_time.KEY = HOST_TO_BE_SHORT(*((uint_16 *)(txmem + MACNET_PTP_ETHER_SEQ_ID_OFFS)));
for(len=0;len<MACNET_PTP_CLOCKID_SIZE;len++)
tmp_tx_time.CLOCKID[len] = *((uint_8 *)(txmem + MACNET_PTP_ETHER_CLOCKID + len));
wait_for_ts = TRUE;
}
/* PTP over UDP: Check if port is 319 for PTP Event, and check for UDP */
else if((totlen > 44) &&
(*(uchar_ptr)(txmem + MACNET_PTP_UDP_PKT_TYPE_OFFS) == MACNET_PACKET_TYPE_UDP) &&
(*(uint_16 *)(txmem + MACNET_PTP_UDP_PORT_OFFS) == HOST_TO_BE_SHORT_CONST(MACNET_PTP_EVNT_PORT)))
{
tx_bd_ptr->CONTROL_EXT0 |= HOST_TO_BE_SHORT_CONST(ENET_BD_EXT0_ETHER_TX_TIMESTAMP);
tmp_tx_time.KEY = HOST_TO_BE_SHORT(*((uint_16 *)(txmem + MACNET_PTP_UDP_SEQ_ID_OFFS)));
for(len=0;len<MACNET_PTP_CLOCKID_SIZE;len++)
tmp_tx_time.CLOCKID[len] = *((uint_8 *)(txmem + MACNET_PTP_UDP_CLOCKID + len));
wait_for_ts = TRUE;
}
}
#endif /* ENETCFG_SUPPORT_PTP */
// Flush the tx bd from cache
_DCACHE_FLUSH_MBYTES((pointer)tx_bd_ptr, sizeof(ENET_BD_STRUCT));
macnet_context_ptr->TxPCBS_PTR[macnet_context_ptr->NextTxBD] = packet;
macnet_context_ptr->AvailableTxBDs--;
BD_INC(macnet_context_ptr->NextTxBD,macnet_context_ptr->NumTxBDs);
macnet_ptr->TDAR = ENET_TDAR_TDAR_MASK;
END:
MACNET_int_enable();
#if ENETCFG_SUPPORT_PTP
if(wait_for_ts)
{
/* Wait for the interrupt */
_lwevent_wait_ticks(&macnet_context_ptr->PTP_PRIV->LWEVENT_PTP, MACNET_PTP_LWEVENT_TX_TS_INTR, FALSE, (uint_32)NULL);
/* Clear the event */
_lwevent_clear(&macnet_context_ptr->PTP_PRIV->LWEVENT_PTP, MACNET_PTP_LWEVENT_TX_TS_INTR);
/* Clear the TS flag from the BD */
tx_bd_ptr->CONTROL_EXT0 &= HOST_TO_BE_SHORT_CONST(~ENET_BD_EXT0_ETHER_TX_TIMESTAMP);
tmp_tx_time.TS_TIME.NSEC = macnet_context_ptr->PTP_PRIV->TXSTAMP.NSEC;
tmp_tx_time.TS_TIME.SEC = macnet_context_ptr->PTP_PRIV->TXSTAMP.SEC;
MACNET_ptp_insert(&(macnet_context_ptr->PTP_PRIV->TX_TIME), &tmp_tx_time);
wait_for_ts = FALSE;
}
#endif /* ENETCFG_SUPPORT_PTP */
return err;
}
