diff options
Diffstat (limited to 'drivers/net/xilinx_emaclite.c')
| -rw-r--r-- | drivers/net/xilinx_emaclite.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c deleted file mode 100644 index cf39573804..0000000000 --- a/drivers/net/xilinx_emaclite.c +++ /dev/null @@ -1,354 +0,0 @@ -/****************************************************************************** - * - * XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" - * AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND - * SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE, - * OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, - * APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION - * THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT, - * AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE - * FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY - * WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE - * IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR - * REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF - * INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE. - * - * (C) Copyright 2007-2008 Michal Simek - * Michal SIMEK <monstr@monstr.eu> - * - * (c) Copyright 2003 Xilinx Inc. - * All rights reserved. - * - ******************************************************************************/ - -#include <common.h> -#include <net.h> -#include <config.h> -#include <asm/io.h> - -#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 u32 etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */ - -/* hardcoded MAC address for the Xilinx EMAC Core when env is nowhere*/ -#ifdef CONFIG_ENV_IS_NOWHERE -static u8 emacaddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 }; -#else -static u8 emacaddr[ENET_ADDR_LENGTH]; -#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) -{ - debug ("eth_halt\n"); -} - -int eth_init (bd_t * bis) -{ - uchar enetaddr[6]; - - debug ("EmacLite Initialization Started\n"); - memset (&emaclite, 0, sizeof (xemaclite)); - emaclite.baseaddress = XILINX_EMACLITE_BASEADDR; - - if (!eth_getenv_enetaddr("ethaddr", enetaddr)) { - memcpy(enetaddr, emacaddr, ENET_ADDR_LENGTH); - eth_setenv_enetaddr("ethaddr", enetaddr); - } - -/* - * TX - TX_PING & TX_PONG initialization - */ - /* Restart PING TX */ - out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET, 0); - /* Copy MAC address */ - xemaclite_alignedwrite (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 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 (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 CONFIG_XILINX_EMACLITE_RX_PING_PONG - out_be32 (emaclite.baseaddress + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET, - XEL_RSR_RECV_IE_MASK); -#endif - - debug ("EmacLite Initialization complete\n"); - 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 CONFIG_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 CONFIG_XILINX_EMACLITE_TX_PING_PONG - emaclite.nexttxbuffertouse ^= XEL_BUFFER_OFFSET; -#endif - 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 & - (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 CONFIG_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)) { - 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 & - (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); - 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; -#endif - } else { -#ifndef CONFIG_XILINX_EMACLITE_RX_PING_PONG - debug ("No data was available - address 0x%x\n", baseaddress); - 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) { - debug ("No data was available - address 0x%x\n", - baseaddress); - 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 */ - debug ("ARP Packet\n"); - break; - case 0x800: - length = 14 + 14 + - (((in_be32 (baseaddress + XEL_RXBUFF_OFFSET + 0x10)) & - 0xFFFF0000) >> 16); /* FIXME size of IP packet */ - debug ("IP Packet\n"); - break; - default: - debug ("Other Packet\n"); - 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); - - debug ("Packet receive from 0x%x, length %dB\n", baseaddress, length); - NetReceive ((uchar *) etherrxbuff, length); - return 1; - -} |