diff options
Diffstat (limited to 'drivers/net/xilinx_emaclite.c')
| -rw-r--r-- | drivers/net/xilinx_emaclite.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c index 805da17..8e574cd 100644 --- a/drivers/net/xilinx_emaclite.c +++ b/drivers/net/xilinx_emaclite.c @@ -63,12 +63,10 @@ /* Recv interrupt enable bit */ #define XEL_RSR_RECV_IE_MASK 0x00000008UL -typedef struct { +struct xemaclite { u32 nexttxbuffertouse; /* Next TX buffer to write to */ u32 nextrxbuffertouse; /* Next RX buffer to read from */ -} xemaclite; - -static xemaclite emaclite; +}; static u32 etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */ @@ -134,7 +132,6 @@ 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)); /* * TX - TX_PING & TX_PONG initialization @@ -180,22 +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); @@ -206,13 +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--; } @@ -229,7 +229,7 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len) } /* Determine the expected TX buffer address */ - baseaddress = (dev->iobase + emaclite.nexttxbuffertouse); + baseaddress = (dev->iobase + emaclite->nexttxbuffertouse); /* Determine if the expected buffer address is empty */ reg = in_be32 (baseaddress + XEL_TSR_OFFSET); @@ -238,7 +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 */ @@ -284,13 +284,14 @@ static int emaclite_recv(struct eth_device *dev) u32 length; u32 reg; u32 baseaddress; + struct xemaclite *emaclite = dev->priv; - baseaddress = dev->iobase + 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 @@ -343,15 +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 = calloc(1, sizeof(*dev)); if (dev == NULL) return -1; + 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; |