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path: root/drivers/net/xilinx_emaclite.c
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Diffstat (limited to 'drivers/net/xilinx_emaclite.c')
-rw-r--r--drivers/net/xilinx_emaclite.c85
1 files changed, 46 insertions, 39 deletions
diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c
index 3c7c250..8e574cd 100644
--- a/drivers/net/xilinx_emaclite.c
+++ b/drivers/net/xilinx_emaclite.c
@@ -63,14 +63,10 @@
/* Recv interrupt enable bit */
#define XEL_RSR_RECV_IE_MASK 0x00000008UL
-typedef struct {
- u32 baseaddress; /* Base address for device (IPIF) */
+struct xemaclite {
u32 nexttxbuffertouse; /* Next TX buffer to write to */
u32 nextrxbuffertouse; /* Next RX buffer to read from */
- uchar deviceid; /* Unique ID of device - for future */
-} xemaclite;
-
-static xemaclite emaclite;
+};
static u32 etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */
@@ -136,44 +132,44 @@ static void emaclite_halt(struct eth_device *dev)
static int emaclite_init(struct eth_device *dev, bd_t *bis)
{
debug ("EmacLite Initialization Started\n");
- memset (&emaclite, 0, sizeof (xemaclite));
- emaclite.baseaddress = dev->iobase;
/*
* TX - TX_PING & TX_PONG initialization
*/
/* Restart PING TX */
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET, 0);
+ out_be32 (dev->iobase + XEL_TSR_OFFSET, 0);
/* Copy MAC address */
xemaclite_alignedwrite (dev->enetaddr,
- emaclite.baseaddress, ENET_ADDR_LENGTH);
+ dev->iobase, ENET_ADDR_LENGTH);
/* Set the length */
- out_be32 (emaclite.baseaddress + XEL_TPLR_OFFSET, ENET_ADDR_LENGTH);
+ out_be32 (dev->iobase + XEL_TPLR_OFFSET, ENET_ADDR_LENGTH);
/* Update the MAC address in the EMAC Lite */
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET, XEL_TSR_PROG_MAC_ADDR);
+ out_be32 (dev->iobase + XEL_TSR_OFFSET, XEL_TSR_PROG_MAC_ADDR);
/* Wait for EMAC Lite to finish with the MAC address update */
- while ((in_be32 (emaclite.baseaddress + XEL_TSR_OFFSET) &
- XEL_TSR_PROG_MAC_ADDR) != 0) ;
+ while ((in_be32 (dev->iobase + XEL_TSR_OFFSET) &
+ XEL_TSR_PROG_MAC_ADDR) != 0)
+ ;
#ifdef CONFIG_XILINX_EMACLITE_TX_PING_PONG
/* The same operation with PONG TX */
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET + XEL_BUFFER_OFFSET, 0);
- xemaclite_alignedwrite (dev->enetaddr, emaclite.baseaddress +
+ out_be32 (dev->iobase + XEL_TSR_OFFSET + XEL_BUFFER_OFFSET, 0);
+ xemaclite_alignedwrite(dev->enetaddr, dev->iobase +
XEL_BUFFER_OFFSET, ENET_ADDR_LENGTH);
- out_be32 (emaclite.baseaddress + XEL_TPLR_OFFSET, ENET_ADDR_LENGTH);
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET + XEL_BUFFER_OFFSET,
+ out_be32 (dev->iobase + XEL_TPLR_OFFSET, ENET_ADDR_LENGTH);
+ out_be32 (dev->iobase + XEL_TSR_OFFSET + XEL_BUFFER_OFFSET,
XEL_TSR_PROG_MAC_ADDR);
- while ((in_be32 (emaclite.baseaddress + XEL_TSR_OFFSET +
- XEL_BUFFER_OFFSET) & XEL_TSR_PROG_MAC_ADDR) != 0) ;
+ while ((in_be32 (dev->iobase + XEL_TSR_OFFSET +
+ XEL_BUFFER_OFFSET) & XEL_TSR_PROG_MAC_ADDR) != 0)
+ ;
#endif
/*
* RX - RX_PING & RX_PONG initialization
*/
/* Write out the value to flush the RX buffer */
- out_be32 (emaclite.baseaddress + XEL_RSR_OFFSET, XEL_RSR_RECV_IE_MASK);
+ out_be32 (dev->iobase + XEL_RSR_OFFSET, XEL_RSR_RECV_IE_MASK);
#ifdef CONFIG_XILINX_EMACLITE_RX_PING_PONG
- out_be32 (emaclite.baseaddress + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET,
+ out_be32 (dev->iobase + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET,
XEL_RSR_RECV_IE_MASK);
#endif
@@ -181,22 +177,24 @@ static int emaclite_init(struct eth_device *dev, bd_t *bis)
return 0;
}
-static int xemaclite_txbufferavailable (xemaclite *instanceptr)
+static int xemaclite_txbufferavailable(struct eth_device *dev)
{
u32 reg;
u32 txpingbusy;
u32 txpongbusy;
+ struct xemaclite *emaclite = dev->priv;
+
/*
* Read the other buffer register
* and determine if the other buffer is available
*/
- reg = in_be32 (instanceptr->baseaddress +
- instanceptr->nexttxbuffertouse + 0);
+ reg = in_be32 (dev->iobase +
+ emaclite->nexttxbuffertouse + 0);
txpingbusy = ((reg & XEL_TSR_XMIT_BUSY_MASK) ==
XEL_TSR_XMIT_BUSY_MASK);
- reg = in_be32 (instanceptr->baseaddress +
- (instanceptr->nexttxbuffertouse ^ XEL_TSR_OFFSET) + 0);
+ reg = in_be32 (dev->iobase +
+ (emaclite->nexttxbuffertouse ^ XEL_TSR_OFFSET) + 0);
txpongbusy = ((reg & XEL_TSR_XMIT_BUSY_MASK) ==
XEL_TSR_XMIT_BUSY_MASK);
@@ -207,13 +205,14 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
{
u32 reg;
u32 baseaddress;
+ struct xemaclite *emaclite = dev->priv;
u32 maxtry = 1000;
if (len > ENET_MAX_MTU)
len = ENET_MAX_MTU;
- while (!xemaclite_txbufferavailable (&emaclite) && maxtry) {
+ while (!xemaclite_txbufferavailable(dev) && maxtry) {
udelay (10);
maxtry--;
}
@@ -221,16 +220,16 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
if (!maxtry) {
printf ("Error: Timeout waiting for ethernet TX buffer\n");
/* Restart PING TX */
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET, 0);
+ out_be32 (dev->iobase + XEL_TSR_OFFSET, 0);
#ifdef CONFIG_XILINX_EMACLITE_TX_PING_PONG
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET +
+ out_be32 (dev->iobase + XEL_TSR_OFFSET +
XEL_BUFFER_OFFSET, 0);
#endif
return -1;
}
/* Determine the expected TX buffer address */
- baseaddress = (emaclite.baseaddress + emaclite.nexttxbuffertouse);
+ baseaddress = (dev->iobase + emaclite->nexttxbuffertouse);
/* Determine if the expected buffer address is empty */
reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
@@ -239,7 +238,7 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
& XEL_TSR_XMIT_ACTIVE_MASK) == 0)) {
#ifdef CONFIG_XILINX_EMACLITE_TX_PING_PONG
- emaclite.nexttxbuffertouse ^= XEL_BUFFER_OFFSET;
+ emaclite->nexttxbuffertouse ^= XEL_BUFFER_OFFSET;
#endif
debug ("Send packet from 0x%x\n", baseaddress);
/* Write the frame to the buffer */
@@ -262,7 +261,7 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
if (((reg & XEL_TSR_XMIT_BUSY_MASK) == 0)
&& ((in_be32 ((baseaddress) + XEL_TSR_OFFSET)
& XEL_TSR_XMIT_ACTIVE_MASK) == 0)) {
- debug ("Send packet from 0x%x\n", baseaddress);
+ debug("Send packet from 0x%x\n", baseaddress);
/* Write the frame to the buffer */
xemaclite_alignedwrite ((void *) ptr, baseaddress, len);
out_be32 (baseaddress + XEL_TPLR_OFFSET,(len &
@@ -285,13 +284,14 @@ static int emaclite_recv(struct eth_device *dev)
u32 length;
u32 reg;
u32 baseaddress;
+ struct xemaclite *emaclite = dev->priv;
- baseaddress = emaclite.baseaddress + emaclite.nextrxbuffertouse;
+ baseaddress = dev->iobase + emaclite->nextrxbuffertouse;
reg = in_be32 (baseaddress + XEL_RSR_OFFSET);
debug ("Testing data at address 0x%x\n", baseaddress);
if ((reg & XEL_RSR_RECV_DONE_MASK) == XEL_RSR_RECV_DONE_MASK) {
#ifdef CONFIG_XILINX_EMACLITE_RX_PING_PONG
- emaclite.nextrxbuffertouse ^= XEL_BUFFER_OFFSET;
+ emaclite->nextrxbuffertouse ^= XEL_BUFFER_OFFSET;
#endif
} else {
#ifndef CONFIG_XILINX_EMACLITE_RX_PING_PONG
@@ -344,16 +344,23 @@ static int emaclite_recv(struct eth_device *dev)
int xilinx_emaclite_initialize (bd_t *bis, int base_addr)
{
struct eth_device *dev;
+ struct xemaclite *emaclite;
- dev = malloc(sizeof(*dev));
+ dev = calloc(1, sizeof(*dev));
if (dev == NULL)
return -1;
- memset(dev, 0, sizeof(*dev));
- sprintf(dev->name, "Xilinx_Emaclite");
+ emaclite = calloc(1, sizeof(struct xemaclite));
+ if (emaclite == NULL) {
+ free(dev);
+ return -1;
+ }
+
+ dev->priv = emaclite;
+
+ sprintf(dev->name, "Xelite.%x", base_addr);
dev->iobase = base_addr;
- dev->priv = 0;
dev->init = emaclite_init;
dev->halt = emaclite_halt;
dev->send = emaclite_send;
generated by cgit v1.1 at 2024-12-11 16:20:36 +0000