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path: root/drivers/net/xilinx_emac.c
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Diffstat (limited to 'drivers/net/xilinx_emac.c')
-rw-r--r--drivers/net/xilinx_emac.c229
1 files changed, 116 insertions, 113 deletions
diff --git a/drivers/net/xilinx_emac.c b/drivers/net/xilinx_emac.c
index d44f31e8a..23567cc40 100644
--- a/drivers/net/xilinx_emac.c
+++ b/drivers/net/xilinx_emac.c
@@ -41,76 +41,78 @@
static unsigned int etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */
-static u8 EMACAddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
+static u8 emacaddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
-static XEmac Emac;
+static xemac emac;
void eth_halt(void)
{
- return;
+#ifdef DEBUG
+ puts ("eth_halt\n");
+#endif
}
int eth_init(bd_t * bis)
{
- u32 HelpReg;
+ u32 helpreg;
#ifdef DEBUG
printf("EMAC Initialization Started\n\r");
#endif
- if (Emac.IsStarted) {
+ if (emac.isstarted) {
puts("Emac is started\n");
return 0;
}
- memset (&Emac, 0, sizeof (XEmac));
+ memset (&emac, 0, sizeof (xemac));
- Emac.BaseAddress = XILINX_EMAC_BASEADDR;
+ emac.baseaddress = XILINX_EMAC_BASEADDR;
/* Setting up FIFOs */
- Emac.RecvFifo.RegBaseAddress = Emac.BaseAddress +
+ emac.recvfifo.regbaseaddress = emac.baseaddress +
XEM_PFIFO_RXREG_OFFSET;
- Emac.RecvFifo.DataBaseAddress = Emac.BaseAddress +
+ emac.recvfifo.databaseaddress = emac.baseaddress +
XEM_PFIFO_RXDATA_OFFSET;
- out_be32 (Emac.RecvFifo.RegBaseAddress, XPF_RESET_FIFO_MASK);
+ out_be32 (emac.recvfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
- Emac.SendFifo.RegBaseAddress = Emac.BaseAddress +
+ emac.sendfifo.regbaseaddress = emac.baseaddress +
XEM_PFIFO_TXREG_OFFSET;
- Emac.SendFifo.DataBaseAddress = Emac.BaseAddress +
+ emac.sendfifo.databaseaddress = emac.baseaddress +
XEM_PFIFO_TXDATA_OFFSET;
- out_be32 (Emac.SendFifo.RegBaseAddress, XPF_RESET_FIFO_MASK);
+ out_be32 (emac.sendfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
/* Reset the entire IPIF */
- out_be32 (Emac.BaseAddress + XIIF_V123B_RESETR_OFFSET,
+ out_be32 (emac.baseaddress + XIIF_V123B_RESETR_OFFSET,
XIIF_V123B_RESET_MASK);
/* Stopping EMAC for setting up MAC */
- HelpReg = in_be32 (Emac.BaseAddress + XEM_ECR_OFFSET);
- HelpReg &= ~(XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
- out_be32 (Emac.BaseAddress + XEM_ECR_OFFSET, HelpReg);
+ helpreg = in_be32 (emac.baseaddress + XEM_ECR_OFFSET);
+ helpreg &= ~(XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
+ out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
if (!getenv("ethaddr")) {
- memcpy(bis->bi_enetaddr, EMACAddr, ENET_ADDR_LENGTH);
+ memcpy(bis->bi_enetaddr, emacaddr, ENET_ADDR_LENGTH);
}
/* Set the device station address high and low registers */
- HelpReg = (bis->bi_enetaddr[0] << 8) | bis->bi_enetaddr[1];
- out_be32 (Emac.BaseAddress + XEM_SAH_OFFSET, HelpReg);
- HelpReg = (bis->bi_enetaddr[2] << 24) | (bis->bi_enetaddr[3] << 16) |
+ helpreg = (bis->bi_enetaddr[0] << 8) | bis->bi_enetaddr[1];
+ out_be32 (emac.baseaddress + XEM_SAH_OFFSET, helpreg);
+ helpreg = (bis->bi_enetaddr[2] << 24) | (bis->bi_enetaddr[3] << 16) |
(bis->bi_enetaddr[4] << 8) | bis->bi_enetaddr[5];
- out_be32 (Emac.BaseAddress + XEM_SAL_OFFSET, HelpReg);
+ out_be32 (emac.baseaddress + XEM_SAL_OFFSET, helpreg);
- HelpReg = XEM_ECR_UNICAST_ENABLE_MASK | XEM_ECR_BROAD_ENABLE_MASK |
+ helpreg = XEM_ECR_UNICAST_ENABLE_MASK | XEM_ECR_BROAD_ENABLE_MASK |
XEM_ECR_FULL_DUPLEX_MASK | XEM_ECR_XMIT_FCS_ENABLE_MASK |
XEM_ECR_XMIT_PAD_ENABLE_MASK | XEM_ECR_PHY_ENABLE_MASK;
- out_be32 (Emac.BaseAddress + XEM_ECR_OFFSET, HelpReg);
+ out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
- Emac.IsStarted = 1;
+ emac.isstarted = 1;
/* Enable the transmitter, and receiver */
- HelpReg = in_be32 (Emac.BaseAddress + XEM_ECR_OFFSET);
- HelpReg &= ~(XEM_ECR_XMIT_RESET_MASK | XEM_ECR_RECV_RESET_MASK);
- HelpReg |= (XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
- out_be32 (Emac.BaseAddress + XEM_ECR_OFFSET, HelpReg);
+ helpreg = in_be32 (emac.baseaddress + XEM_ECR_OFFSET);
+ helpreg &= ~(XEM_ECR_XMIT_RESET_MASK | XEM_ECR_RECV_RESET_MASK);
+ helpreg |= (XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK);
+ out_be32 (emac.baseaddress + XEM_ECR_OFFSET, helpreg);
printf("EMAC Initialization complete\n\r");
return 0;
@@ -118,12 +120,12 @@ int eth_init(bd_t * bis)
int eth_send(volatile void *ptr, int len)
{
- u32 IntrStatus;
- u32 XmitStatus;
- u32 FifoCount;
- u32 WordCount;
- u32 ExtraByteCount;
- u32 *WordBuffer = (u32 *) ptr;
+ u32 intrstatus;
+ u32 xmitstatus;
+ u32 fifocount;
+ u32 wordcount;
+ u32 extrabytecount;
+ u32 *wordbuffer = (u32 *) ptr;
if (len > ENET_MAX_MTU)
len = ENET_MAX_MTU;
@@ -135,20 +137,20 @@ int eth_send(volatile void *ptr, int len)
* continue. The upper layer software should reset the device to resolve
* the error.
*/
- IntrStatus = in_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET);
- if (IntrStatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
+ intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
+ if (intrstatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
XEM_EIR_XMIT_LFIFO_OVER_MASK)) {
#ifdef DEBUG
puts ("Transmitting overrun error\n");
#endif
return 0;
- } else if (IntrStatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
+ } else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
#ifdef DEBUG
puts ("Transmitting underrun error\n");
#endif
return 0;
- } else if (in_be32 (Emac.SendFifo.RegBaseAddress +
+ } else if (in_be32 (emac.sendfifo.regbaseaddress +
XPF_COUNT_STATUS_REG_OFFSET) & XPF_DEADLOCK_MASK) {
#ifdef DEBUG
puts("Transmitting fifo error\n");
@@ -165,9 +167,9 @@ int eth_send(volatile void *ptr, int len)
* Clear the latched LFIFO_FULL bit so next time around the most
* current status is represented
*/
- if (IntrStatus & XEM_EIR_XMIT_LFIFO_FULL_MASK) {
- out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET, IntrStatus
- & XEM_EIR_XMIT_LFIFO_FULL_MASK);
+ if (intrstatus & XEM_EIR_XMIT_LFIFO_FULL_MASK) {
+ out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
+ intrstatus & XEM_EIR_XMIT_LFIFO_FULL_MASK);
#ifdef DEBUG
puts ("Fifo is full\n");
#endif
@@ -175,72 +177,72 @@ int eth_send(volatile void *ptr, int len)
}
/* get the count of how many words may be inserted into the FIFO */
- FifoCount = in_be32 (Emac.SendFifo.RegBaseAddress +
+ fifocount = in_be32 (emac.sendfifo.regbaseaddress +
XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
- WordCount = len >> 2;
- ExtraByteCount = len & 0x3;
+ wordcount = len >> 2;
+ extrabytecount = len & 0x3;
- if (FifoCount < WordCount) {
+ if (fifocount < wordcount) {
#ifdef DEBUG
puts ("Sending packet is larger then size of FIFO\n");
#endif
return 0;
}
- for (FifoCount = 0; FifoCount < WordCount; FifoCount++) {
- out_be32 (Emac.SendFifo.DataBaseAddress, WordBuffer[FifoCount]);
+ for (fifocount = 0; fifocount < wordcount; fifocount++) {
+ out_be32 (emac.sendfifo.databaseaddress, wordbuffer[fifocount]);
}
- if (ExtraByteCount > 0) {
- u32 LastWord = 0;
- u8 *ExtraBytesBuffer = (u8 *) (WordBuffer + WordCount);
+ if (extrabytecount > 0) {
+ u32 lastword = 0;
+ u8 *extrabytesbuffer = (u8 *) (wordbuffer + wordcount);
- if (ExtraByteCount == 1) {
- LastWord = ExtraBytesBuffer[0] << 24;
- } else if (ExtraByteCount == 2) {
- LastWord = ExtraBytesBuffer[0] << 24 |
- ExtraBytesBuffer[1] << 16;
- } else if (ExtraByteCount == 3) {
- LastWord = ExtraBytesBuffer[0] << 24 |
- ExtraBytesBuffer[1] << 16 |
- ExtraBytesBuffer[2] << 8;
+ if (extrabytecount == 1) {
+ lastword = extrabytesbuffer[0] << 24;
+ } else if (extrabytecount == 2) {
+ lastword = extrabytesbuffer[0] << 24 |
+ extrabytesbuffer[1] << 16;
+ } else if (extrabytecount == 3) {
+ lastword = extrabytesbuffer[0] << 24 |
+ extrabytesbuffer[1] << 16 |
+ extrabytesbuffer[2] << 8;
}
- out_be32 (Emac.SendFifo.DataBaseAddress, LastWord);
+ out_be32 (emac.sendfifo.databaseaddress, lastword);
}
/* Loop on the MAC's status to wait for any pause to complete */
- IntrStatus = in_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET);
- while ((IntrStatus & XEM_EIR_XMIT_PAUSE_MASK) != 0) {
- IntrStatus = in_be32 ((Emac.BaseAddress) +
+ intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
+ while ((intrstatus & XEM_EIR_XMIT_PAUSE_MASK) != 0) {
+ intrstatus = in_be32 ((emac.baseaddress) +
XIIF_V123B_IISR_OFFSET);
/* Clear the pause status from the transmit status register */
- out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET,
- IntrStatus & XEM_EIR_XMIT_PAUSE_MASK);
+ out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
+ intrstatus & XEM_EIR_XMIT_PAUSE_MASK);
}
/*
* Set the MAC's transmit packet length register to tell it to transmit
*/
- out_be32 (Emac.BaseAddress + XEM_TPLR_OFFSET, len);
+ out_be32 (emac.baseaddress + XEM_TPLR_OFFSET, len);
/*
* Loop on the MAC's status to wait for the transmit to complete.
* The transmit status is in the FIFO when the XMIT_DONE bit is set.
*/
do {
- IntrStatus = in_be32 ((Emac.BaseAddress) +
+ intrstatus = in_be32 ((emac.baseaddress) +
XIIF_V123B_IISR_OFFSET);
}
- while ((IntrStatus & XEM_EIR_XMIT_DONE_MASK) == 0);
+ while ((intrstatus & XEM_EIR_XMIT_DONE_MASK) == 0);
- XmitStatus = in_be32 (Emac.BaseAddress + XEM_TSR_OFFSET);
+ xmitstatus = in_be32 (emac.baseaddress + XEM_TSR_OFFSET);
- if (IntrStatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
+ if (intrstatus & (XEM_EIR_XMIT_SFIFO_OVER_MASK |
XEM_EIR_XMIT_LFIFO_OVER_MASK)) {
#ifdef DEBUG
puts ("Transmitting overrun error\n");
#endif
return 0;
- } else if (IntrStatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
+ } else if (intrstatus & (XEM_EIR_XMIT_SFIFO_UNDER_MASK |
XEM_EIR_XMIT_LFIFO_UNDER_MASK)) {
#ifdef DEBUG
puts ("Transmitting underrun error\n");
@@ -249,15 +251,15 @@ int eth_send(volatile void *ptr, int len)
}
/* Clear the interrupt status register of transmit statuses */
- out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET,
- IntrStatus & XEM_EIR_XMIT_ALL_MASK);
+ out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
+ intrstatus & XEM_EIR_XMIT_ALL_MASK);
/*
* Collision errors are stored in the transmit status register
* instead of the interrupt status register
*/
- if ((XmitStatus & XEM_TSR_EXCESS_DEFERRAL_MASK) ||
- (XmitStatus & XEM_TSR_LATE_COLLISION_MASK)) {
+ if ((xmitstatus & XEM_TSR_EXCESS_DEFERRAL_MASK) ||
+ (xmitstatus & XEM_TSR_LATE_COLLISION_MASK)) {
#ifdef DEBUG
puts ("Transmitting collision error\n");
#endif
@@ -268,17 +270,17 @@ int eth_send(volatile void *ptr, int len)
int eth_rx(void)
{
- u32 PktLength;
- u32 IntrStatus;
- u32 FifoCount;
- u32 WordCount;
- u32 ExtraByteCount;
- u32 LastWord;
- u8 *ExtraBytesBuffer;
+ u32 pktlength;
+ u32 intrstatus;
+ u32 fifocount;
+ u32 wordcount;
+ u32 extrabytecount;
+ u32 lastword;
+ u8 *extrabytesbuffer;
- if (in_be32 (Emac.RecvFifo.RegBaseAddress + XPF_COUNT_STATUS_REG_OFFSET)
+ if (in_be32 (emac.recvfifo.regbaseaddress + XPF_COUNT_STATUS_REG_OFFSET)
& XPF_DEADLOCK_MASK) {
- out_be32 (Emac.RecvFifo.RegBaseAddress, XPF_RESET_FIFO_MASK);
+ out_be32 (emac.recvfifo.regbaseaddress, XPF_RESET_FIFO_MASK);
#ifdef DEBUG
puts ("Receiving FIFO deadlock\n");
#endif
@@ -286,17 +288,18 @@ int eth_rx(void)
}
/*
- * Get the interrupt status to know what happened (whether an error occurred
- * and/or whether frames have been received successfully). When clearing the
- * intr status register, clear only statuses that pertain to receive.
+ * Get the interrupt status to know what happened (whether an error
+ * occurred and/or whether frames have been received successfully).
+ * When clearing the intr status register, clear only statuses that
+ * pertain to receive.
*/
- IntrStatus = in_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET);
+ intrstatus = in_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET);
/*
* Before reading from the length FIFO, make sure the length FIFO is not
* empty. We could cause an underrun error if we try to read from an
* empty FIFO.
*/
- if (!(IntrStatus & XEM_EIR_RECV_DONE_MASK)) {
+ if (!(intrstatus & XEM_EIR_RECV_DONE_MASK)) {
#ifdef DEBUG
/* puts("Receiving FIFO is empty\n"); */
#endif
@@ -307,8 +310,8 @@ int eth_rx(void)
* Determine, from the MAC, the length of the next packet available
* in the data FIFO (there should be a non-zero length here)
*/
- PktLength = in_be32 (Emac.BaseAddress + XEM_RPLR_OFFSET);
- if (!PktLength) {
+ pktlength = in_be32 (emac.baseaddress + XEM_RPLR_OFFSET);
+ if (!pktlength) {
return 0;
}
@@ -320,53 +323,53 @@ int eth_rx(void)
* in the IPIF, which means it may indicate a non-empty condition even
* though there is something in the FIFO.
*/
- out_be32 ((Emac.BaseAddress) + XIIF_V123B_IISR_OFFSET,
+ out_be32 ((emac.baseaddress) + XIIF_V123B_IISR_OFFSET,
XEM_EIR_RECV_DONE_MASK);
- FifoCount = in_be32 (Emac.RecvFifo.RegBaseAddress +
+ fifocount = in_be32 (emac.recvfifo.regbaseaddress +
XPF_COUNT_STATUS_REG_OFFSET) & XPF_COUNT_MASK;
- if ((FifoCount * 4) < PktLength) {
+ if ((fifocount * 4) < pktlength) {
#ifdef DEBUG
puts ("Receiving FIFO is smaller than packet size.\n");
#endif
return 0;
}
- WordCount = PktLength >> 2;
- ExtraByteCount = PktLength & 0x3;
+ wordcount = pktlength >> 2;
+ extrabytecount = pktlength & 0x3;
- for (FifoCount = 0; FifoCount < WordCount; FifoCount++) {
- etherrxbuff[FifoCount] =
- in_be32 (Emac.RecvFifo.DataBaseAddress);
+ for (fifocount = 0; fifocount < wordcount; fifocount++) {
+ etherrxbuff[fifocount] =
+ in_be32 (emac.recvfifo.databaseaddress);
}
/*
* if there are extra bytes to handle, read the last word from the FIFO
* and insert the extra bytes into the buffer
*/
- if (ExtraByteCount > 0) {
- ExtraBytesBuffer = (u8 *) (etherrxbuff + WordCount);
+ if (extrabytecount > 0) {
+ extrabytesbuffer = (u8 *) (etherrxbuff + wordcount);
- LastWord = in_be32 (Emac.RecvFifo.DataBaseAddress);
+ lastword = in_be32 (emac.recvfifo.databaseaddress);
/*
* one extra byte in the last word, put the byte into the next
* location of the buffer, bytes in a word of the FIFO are
* ordered from most significant byte to least
*/
- if (ExtraByteCount == 1) {
- ExtraBytesBuffer[0] = (u8) (LastWord >> 24);
- } else if (ExtraByteCount == 2) {
- ExtraBytesBuffer[0] = (u8) (LastWord >> 24);
- ExtraBytesBuffer[1] = (u8) (LastWord >> 16);
- } else if (ExtraByteCount == 3) {
- ExtraBytesBuffer[0] = (u8) (LastWord >> 24);
- ExtraBytesBuffer[1] = (u8) (LastWord >> 16);
- ExtraBytesBuffer[2] = (u8) (LastWord >> 8);
+ if (extrabytecount == 1) {
+ extrabytesbuffer[0] = (u8) (lastword >> 24);
+ } else if (extrabytecount == 2) {
+ extrabytesbuffer[0] = (u8) (lastword >> 24);
+ extrabytesbuffer[1] = (u8) (lastword >> 16);
+ } else if (extrabytecount == 3) {
+ extrabytesbuffer[0] = (u8) (lastword >> 24);
+ extrabytesbuffer[1] = (u8) (lastword >> 16);
+ extrabytesbuffer[2] = (u8) (lastword >> 8);
}
}
- NetReceive((uchar *)etherrxbuff, PktLength);
+ NetReceive((uchar *)etherrxbuff, pktlength);
return 1;
}
#endif
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