*
* 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <config.h>
#include <malloc.h>
#include <asm/io.h>
+#include <fdtdec.h>
#undef DEBUG
-#define ENET_MAX_MTU PKTSIZE
-#define ENET_MAX_MTU_ALIGNED PKTSIZE_ALIGN
#define ENET_ADDR_LENGTH 6
/* EmacLite constants */
/* 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;
+ u32 txpp; /* TX ping pong buffer */
+ u32 rxpp; /* RX ping pong buffer */
+};
static u32 etherrxbuff[PKTSIZE_ALIGN/4]; /* Receive buffer */
-static void xemaclite_alignedread (u32 *srcptr, void *destptr, u32 bytecount)
+static void xemaclite_alignedread(u32 *srcptr, void *destptr, u32 bytecount)
{
u32 i;
u32 alignbuffer;
to8ptr = (u8 *) to32ptr;
alignbuffer = *from32ptr++;
- from8ptr = (u8 *) & alignbuffer;
+ from8ptr = (u8 *) &alignbuffer;
- for (i = 0; i < bytecount; i++) {
+ for (i = 0; i < bytecount; i++)
*to8ptr++ = *from8ptr++;
- }
}
-static void xemaclite_alignedwrite (void *srcptr, u32 destptr, u32 bytecount)
+static void xemaclite_alignedwrite(void *srcptr, u32 destptr, u32 bytecount)
{
u32 i;
u32 alignbuffer;
}
alignbuffer = 0;
- to8ptr = (u8 *) & alignbuffer;
+ to8ptr = (u8 *) &alignbuffer;
from8ptr = (u8 *) from32ptr;
- for (i = 0; i < bytecount; i++) {
+ for (i = 0; i < bytecount; i++)
*to8ptr++ = *from8ptr++;
- }
*to32ptr++ = alignbuffer;
}
static void emaclite_halt(struct eth_device *dev)
{
- debug ("eth_halt\n");
+ debug("eth_halt\n");
}
static int emaclite_init(struct eth_device *dev, bd_t *bis)
{
- debug ("EmacLite Initialization Started\n");
- memset (&emaclite, 0, sizeof (xemaclite));
+ struct xemaclite *emaclite = dev->priv;
+ debug("EmacLite Initialization Started\n");
/*
* TX - TX_PING & TX_PONG initialization
/* Restart PING TX */
out_be32 (dev->iobase + XEL_TSR_OFFSET, 0);
/* Copy MAC address */
- xemaclite_alignedwrite (dev->enetaddr,
- dev->iobase, ENET_ADDR_LENGTH);
+ xemaclite_alignedwrite(dev->enetaddr, dev->iobase, ENET_ADDR_LENGTH);
/* Set the length */
out_be32 (dev->iobase + XEL_TPLR_OFFSET, ENET_ADDR_LENGTH);
/* Update the MAC address in the EMAC Lite */
XEL_TSR_PROG_MAC_ADDR) != 0)
;
-#ifdef CONFIG_XILINX_EMACLITE_TX_PING_PONG
- /* The same operation with PONG TX */
- 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 (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 (dev->iobase + XEL_TSR_OFFSET +
- XEL_BUFFER_OFFSET) & XEL_TSR_PROG_MAC_ADDR) != 0)
- ;
-#endif
+ if (emaclite->txpp) {
+ /* The same operation with PONG TX */
+ 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 (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 (dev->iobase + XEL_TSR_OFFSET +
+ XEL_BUFFER_OFFSET) & XEL_TSR_PROG_MAC_ADDR) != 0)
+ ;
+ }
/*
* RX - RX_PING & RX_PONG initialization
*/
/* Write out the value to flush the RX buffer */
out_be32 (dev->iobase + XEL_RSR_OFFSET, XEL_RSR_RECV_IE_MASK);
-#ifdef CONFIG_XILINX_EMACLITE_RX_PING_PONG
- out_be32 (dev->iobase + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET,
- XEL_RSR_RECV_IE_MASK);
-#endif
- debug ("EmacLite Initialization complete\n");
+ if (emaclite->rxpp)
+ out_be32 (dev->iobase + XEL_RSR_OFFSET + XEL_BUFFER_OFFSET,
+ XEL_RSR_RECV_IE_MASK);
+
+ debug("EmacLite Initialization complete\n");
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);
- return (!(txpingbusy && txpongbusy));
+ return !(txpingbusy && txpongbusy);
}
-static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
+static int emaclite_send(struct eth_device *dev, 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;
+ if (len > PKTSIZE)
+ len = PKTSIZE;
- while (!xemaclite_txbufferavailable (&emaclite) && maxtry) {
- udelay (10);
+ while (!xemaclite_txbufferavailable(dev) && maxtry) {
+ udelay(10);
maxtry--;
}
if (!maxtry) {
- printf ("Error: Timeout waiting for ethernet TX buffer\n");
+ printf("Error: Timeout waiting for ethernet TX buffer\n");
/* Restart PING TX */
out_be32 (dev->iobase + XEL_TSR_OFFSET, 0);
-#ifdef CONFIG_XILINX_EMACLITE_TX_PING_PONG
- out_be32 (dev->iobase + XEL_TSR_OFFSET +
- XEL_BUFFER_OFFSET, 0);
-#endif
+ if (emaclite->txpp) {
+ out_be32 (dev->iobase + XEL_TSR_OFFSET +
+ XEL_BUFFER_OFFSET, 0);
+ }
return -1;
}
/* 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);
&& ((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);
+ if (emaclite->txpp)
+ emaclite->nexttxbuffertouse ^= XEL_BUFFER_OFFSET;
+
+ debug("Send packet from 0x%x\n", baseaddress);
/* Write the frame to the buffer */
- xemaclite_alignedwrite ((void *) ptr, baseaddress, len);
+ xemaclite_alignedwrite(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) {
+ if ((reg & XEL_TSR_XMIT_IE_MASK) != 0)
reg |= XEL_TSR_XMIT_ACTIVE_MASK;
- }
out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
return 0;
}
-#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)));
+
+ if (emaclite->txpp) {
+ /* Switch to second buffer */
+ baseaddress ^= XEL_BUFFER_OFFSET;
+ /* Determine if the expected buffer address is empty */
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;
+ 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(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 0;
}
- out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
- return 0;
}
-#endif
- puts ("Error while sending frame\n");
+
+ puts("Error while sending frame\n");
return -1;
}
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);
+ 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
+ if (emaclite->rxpp)
+ emaclite->nextrxbuffertouse ^= XEL_BUFFER_OFFSET;
} 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);
+
+ if (!emaclite->rxpp) {
+ 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(((ntohl(in_be32 (baseaddress + XEL_RXBUFF_OFFSET + 0xC))) &
0xFFFF0000 ) >> 16) {
case 0x806:
length = 42 + 20; /* FIXME size of ARP */
- debug ("ARP Packet\n");
+ debug("ARP Packet\n");
break;
case 0x800:
length = 14 + 14 +
- (((ntohl(in_be32 (baseaddress + XEL_RXBUFF_OFFSET + 0x10))) &
- 0xFFFF0000) >> 16); /* FIXME size of IP packet */
+ (((ntohl(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;
+ debug("Other Packet\n");
+ length = PKTSIZE;
break;
}
- xemaclite_alignedread ((u32 *) (baseaddress + XEL_RXBUFF_OFFSET),
+ xemaclite_alignedread((u32 *) (baseaddress + XEL_RXBUFF_OFFSET),
etherrxbuff, length);
/* Acknowledge the frame */
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);
+ debug("Packet receive from 0x%x, length %dB\n", baseaddress, length);
+ NetReceive((uchar *) etherrxbuff, length);
return length;
}
-int xilinx_emaclite_initialize (bd_t *bis, int base_addr)
+int xilinx_emaclite_initialize(bd_t *bis, unsigned long base_addr,
+ int txpp, int rxpp)
{
struct eth_device *dev;
+ struct xemaclite *emaclite;
dev = calloc(1, sizeof(*dev));
if (dev == NULL)
return -1;
- sprintf(dev->name, "Xelite.%x", base_addr);
+ emaclite = calloc(1, sizeof(struct xemaclite));
+ if (emaclite == NULL) {
+ free(dev);
+ return -1;
+ }
+
+ dev->priv = emaclite;
+
+ emaclite->txpp = txpp;
+ emaclite->rxpp = rxpp;
+
+ sprintf(dev->name, "Xelite.%lx", base_addr);
dev->iobase = base_addr;
- dev->priv = 0;
dev->init = emaclite_init;
dev->halt = emaclite_halt;
dev->send = emaclite_send;
return 1;
}
+
+#ifdef CONFIG_OF_CONTROL
+int xilinx_emaclite_of_init(const void *blob)
+{
+ int offset = 0;
+ u32 ret = 0;
+ u32 reg;
+
+ do {
+ offset = fdt_node_offset_by_compatible(blob, offset,
+ "xlnx,xps-ethernetlite-1.00.a");
+ if (offset != -1) {
+ reg = fdtdec_get_addr(blob, offset, "reg");
+ if (reg != FDT_ADDR_T_NONE) {
+ u32 rxpp = fdtdec_get_int(blob, offset,
+ "xlnx,rx-ping-pong", 0);
+ u32 txpp = fdtdec_get_int(blob, offset,
+ "xlnx,tx-ping-pong", 0);
+ ret |= xilinx_emaclite_initialize(NULL, reg,
+ txpp, rxpp);
+ } else {
+ debug("EMACLITE: Can't get base address\n");
+ return -1;
+ }
+ }
+ } while (offset != -1);
+
+ return ret;
+}
+#endif
projects / karo-tx-uboot.git / blobdiff