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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.c376
1 files changed, 0 insertions, 376 deletions
diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c
deleted file mode 100644
index 5d8eaa5..0000000
--- a/drivers/net/xilinx_emaclite.c
+++ /dev/null
@@ -1,376 +0,0 @@
-/*
- * (C) Copyright 2007 Michal Simek
- *
- * Michal SIMEK <monstr@monstr.eu>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <net.h>
-#include <config.h>
-#include <asm/io.h>
-
-#ifdef XILINX_EMACLITE_BASEADDR
-
-#undef DEBUG
-
-#define ENET_MAX_MTU PKTSIZE
-#define ENET_MAX_MTU_ALIGNED PKTSIZE_ALIGN
-#define ENET_ADDR_LENGTH 6
-
-/* EmacLite constants */
-#define XEL_BUFFER_OFFSET 0x0800 /* Next buffer's offset */
-#define XEL_TPLR_OFFSET 0x07F4 /* Tx packet length */
-#define XEL_TSR_OFFSET 0x07FC /* Tx status */
-#define XEL_RSR_OFFSET 0x17FC /* Rx status */
-#define XEL_RXBUFF_OFFSET 0x1000 /* Receive Buffer */
-
-/* Xmit complete */
-#define XEL_TSR_XMIT_BUSY_MASK 0x00000001UL
-/* Xmit interrupt enable bit */
-#define XEL_TSR_XMIT_IE_MASK 0x00000008UL
-/* Buffer is active, SW bit only */
-#define XEL_TSR_XMIT_ACTIVE_MASK 0x80000000UL
-/* Program the MAC address */
-#define XEL_TSR_PROGRAM_MASK 0x00000002UL
-/* define for programming the MAC address into the EMAC Lite */
-#define XEL_TSR_PROG_MAC_ADDR (XEL_TSR_XMIT_BUSY_MASK | XEL_TSR_PROGRAM_MASK)
-
-/* Transmit packet length upper byte */
-#define XEL_TPLR_LENGTH_MASK_HI 0x0000FF00UL
-/* Transmit packet length lower byte */
-#define XEL_TPLR_LENGTH_MASK_LO 0x000000FFUL
-
-/* Recv complete */
-#define XEL_RSR_RECV_DONE_MASK 0x00000001UL
-/* Recv interrupt enable bit */
-#define XEL_RSR_RECV_IE_MASK 0x00000008UL
-
-typedef struct {
- unsigned int baseaddress; /* Base address for device (IPIF) */
- unsigned int nexttxbuffertouse; /* Next TX buffer to write to */
- unsigned int nextrxbuffertouse; /* Next RX buffer to read from */
- unsigned char deviceid; /* Unique ID of device - for future */
-} xemaclite;
-
-static xemaclite emaclite;
-
-static char etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */
-
-/* hardcoded MAC address for the Xilinx EMAC Core when env is nowhere*/
-#ifdef CFG_ENV_IS_NOWHERE
-static u8 emacaddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
-#endif
-
-void xemaclite_alignedread (u32 * srcptr, void *destptr, unsigned bytecount)
-{
- unsigned int i;
- u32 alignbuffer;
- u32 *to32ptr;
- u32 *from32ptr;
- u8 *to8ptr;
- u8 *from8ptr;
-
- from32ptr = (u32 *) srcptr;
-
- /* Word aligned buffer, no correction needed. */
- to32ptr = (u32 *) destptr;
- while (bytecount > 3) {
- *to32ptr++ = *from32ptr++;
- bytecount -= 4;
- }
- to8ptr = (u8 *) to32ptr;
-
- alignbuffer = *from32ptr++;
- from8ptr = (u8 *) & alignbuffer;
-
- for (i = 0; i < bytecount; i++) {
- *to8ptr++ = *from8ptr++;
- }
-}
-
-void xemaclite_alignedwrite (void *srcptr, u32 destptr, unsigned bytecount)
-{
- unsigned i;
- u32 alignbuffer;
- u32 *to32ptr = (u32 *) destptr;
- u32 *from32ptr;
- u8 *to8ptr;
- u8 *from8ptr;
-
- from32ptr = (u32 *) srcptr;
- while (bytecount > 3) {
-
- *to32ptr++ = *from32ptr++;
- bytecount -= 4;
- }
-
- alignbuffer = 0;
- to8ptr = (u8 *) & alignbuffer;
- from8ptr = (u8 *) from32ptr;
-
- for (i = 0; i < bytecount; i++) {
- *to8ptr++ = *from8ptr++;
- }
-
- *to32ptr++ = alignbuffer;
-}
-
-void eth_halt (void)
-{
-#ifdef DEBUG
- puts ("eth_halt\n");
-#endif
-}
-
-int eth_init (bd_t * bis)
-{
-#ifdef DEBUG
- puts ("EmacLite Initialization Started\n");
-#endif
- memset (&emaclite, 0, sizeof (xemaclite));
- emaclite.baseaddress = XILINX_EMACLITE_BASEADDR;
-
- if (!getenv("ethaddr")) {
- memcpy(bis->bi_enetaddr, emacaddr, ENET_ADDR_LENGTH);
- }
-
-/*
- * TX - TX_PING & TX_PONG initialization
- */
- /* Restart PING TX */
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET, 0);
- /* Copy MAC address */
- xemaclite_alignedwrite (bis->bi_enetaddr,
- emaclite.baseaddress, ENET_ADDR_LENGTH);
- /* Set the length */
- out_be32 (emaclite.baseaddress + 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);
- /* 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) ;
-
-#ifdef XILINX_EMACLITE_TX_PING_PONG
- /* The same operation with PONG TX */
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET + XEL_BUFFER_OFFSET, 0);
- xemaclite_alignedwrite (bis->bi_enetaddr, emaclite.baseaddress +
- 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,
- XEL_TSR_PROG_MAC_ADDR);
- while ((in_be32 (emaclite.baseaddress + 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);
-#ifdef XILINX_EMACLITE_RX_PING_PONG
- out_be32 (emaclite.baseaddress + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET,
- XEL_RSR_RECV_IE_MASK);
-#endif
-
-#ifdef DEBUG
- puts ("EmacLite Initialization complete\n");
-#endif
- return 0;
-}
-
-int xemaclite_txbufferavailable (xemaclite * instanceptr)
-{
- u32 reg;
- u32 txpingbusy;
- u32 txpongbusy;
- /*
- * Read the other buffer register
- * and determine if the other buffer is available
- */
- reg = in_be32 (instanceptr->baseaddress +
- instanceptr->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);
- txpongbusy = ((reg & XEL_TSR_XMIT_BUSY_MASK) ==
- XEL_TSR_XMIT_BUSY_MASK);
-
- return (!(txpingbusy && txpongbusy));
-}
-
-int eth_send (volatile void *ptr, int len) {
-
- unsigned int reg;
- unsigned int baseaddress;
-
- unsigned maxtry = 1000;
-
- if (len > ENET_MAX_MTU)
- len = ENET_MAX_MTU;
-
- while (!xemaclite_txbufferavailable (&emaclite) && maxtry) {
- udelay (10);
- maxtry--;
- }
-
- if (!maxtry) {
- printf ("Error: Timeout waiting for ethernet TX buffer\n");
- /* Restart PING TX */
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET, 0);
-#ifdef XILINX_EMACLITE_TX_PING_PONG
- out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET +
- XEL_BUFFER_OFFSET, 0);
-#endif
- return 0;
- }
-
- /* Determine the expected TX buffer address */
- baseaddress = (emaclite.baseaddress + emaclite.nexttxbuffertouse);
-
- /* Determine if the expected buffer address is empty */
- reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
- if (((reg & XEL_TSR_XMIT_BUSY_MASK) == 0)
- && ((in_be32 ((baseaddress) + XEL_TSR_OFFSET)
- & XEL_TSR_XMIT_ACTIVE_MASK) == 0)) {
-
-#ifdef XILINX_EMACLITE_TX_PING_PONG
- emaclite.nexttxbuffertouse ^= XEL_BUFFER_OFFSET;
-#endif
-#ifdef DEBUG
- printf ("Send packet from 0x%x\n", baseaddress);
-#endif
- /* Write the frame to the buffer */
- xemaclite_alignedwrite ((void *) ptr, baseaddress, len);
- out_be32 (baseaddress + XEL_TPLR_OFFSET,(len &
- (XEL_TPLR_LENGTH_MASK_HI | XEL_TPLR_LENGTH_MASK_LO)));
- reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
- reg |= XEL_TSR_XMIT_BUSY_MASK;
- if ((reg & XEL_TSR_XMIT_IE_MASK) != 0) {
- reg |= XEL_TSR_XMIT_ACTIVE_MASK;
- }
- out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
- return 1;
- }
-#ifdef XILINX_EMACLITE_TX_PING_PONG
- /* Switch to second buffer */
- baseaddress ^= XEL_BUFFER_OFFSET;
- /* Determine if the expected buffer address is empty */
- reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
- if (((reg & XEL_TSR_XMIT_BUSY_MASK) == 0)
- && ((in_be32 ((baseaddress) + XEL_TSR_OFFSET)
- & XEL_TSR_XMIT_ACTIVE_MASK) == 0)) {
-#ifdef DEBUG
- printf ("Send packet from 0x%x\n", baseaddress);
-#endif
- /* Write the frame to the buffer */
- xemaclite_alignedwrite ((void *) ptr, baseaddress, len);
- out_be32 (baseaddress + XEL_TPLR_OFFSET,(len &
- (XEL_TPLR_LENGTH_MASK_HI | XEL_TPLR_LENGTH_MASK_LO)));
- reg = in_be32 (baseaddress + XEL_TSR_OFFSET);
- reg |= XEL_TSR_XMIT_BUSY_MASK;
- if ((reg & XEL_TSR_XMIT_IE_MASK) != 0) {
- reg |= XEL_TSR_XMIT_ACTIVE_MASK;
- }
- out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
- return 1;
- }
-#endif
- puts ("Error while sending frame\n");
- return 0;
-}
-
-int eth_rx (void)
-{
- unsigned int length;
- unsigned int reg;
- unsigned int baseaddress;
-
- baseaddress = emaclite.baseaddress + emaclite.nextrxbuffertouse;
- reg = in_be32 (baseaddress + XEL_RSR_OFFSET);
-#ifdef DEBUG
- printf ("Testing data at address 0x%x\n", baseaddress);
-#endif
- if ((reg & XEL_RSR_RECV_DONE_MASK) == XEL_RSR_RECV_DONE_MASK) {
-#ifdef XILINX_EMACLITE_RX_PING_PONG
- emaclite.nextrxbuffertouse ^= XEL_BUFFER_OFFSET;
-#endif
- } else {
-#ifndef XILINX_EMACLITE_RX_PING_PONG
-#ifdef DEBUG
- printf ("No data was available - address 0x%x\n", baseaddress);
-#endif
- return 0;
-#else
- baseaddress ^= XEL_BUFFER_OFFSET;
- reg = in_be32 (baseaddress + XEL_RSR_OFFSET);
- if ((reg & XEL_RSR_RECV_DONE_MASK) !=
- XEL_RSR_RECV_DONE_MASK) {
-#ifdef DEBUG
- printf ("No data was available - address 0x%x\n",
- baseaddress);
-#endif
- return 0;
- }
-#endif
- }
- /* Get the length of the frame that arrived */
- switch(((in_be32 (baseaddress + XEL_RXBUFF_OFFSET + 0xC)) &
- 0xFFFF0000 ) >> 16) {
- case 0x806:
- length = 42 + 20; /* FIXME size of ARP */
-#ifdef DEBUG
- puts ("ARP Packet\n");
-#endif
- break;
- case 0x800:
- length = 14 + 14 +
- (((in_be32 (baseaddress + XEL_RXBUFF_OFFSET + 0x10)) &
- 0xFFFF0000) >> 16); /* FIXME size of IP packet */
-#ifdef DEBUG
- puts("IP Packet\n");
-#endif
- break;
- default:
-#ifdef DEBUG
- puts("Other Packet\n");
-#endif
- length = ENET_MAX_MTU;
- break;
- }
-
- xemaclite_alignedread ((u32 *) (baseaddress + XEL_RXBUFF_OFFSET),
- etherrxbuff, length);
-
- /* Acknowledge the frame */
- reg = in_be32 (baseaddress + XEL_RSR_OFFSET);
- reg &= ~XEL_RSR_RECV_DONE_MASK;
- out_be32 (baseaddress + XEL_RSR_OFFSET, reg);
-
-#ifdef DEBUG
- printf ("Packet receive from 0x%x, length %dB\n", baseaddress, length);
-#endif
- NetReceive ((uchar *) etherrxbuff, length);
- return 1;
-
-}
-#endif