* Patch by Peter Ryser, 20 Feb 2004:

  Add support for the Xilinx ML300 platform

* Patch by Stephan Linz, 17 Feb 2004:
  Fix watchdog support for NIOS

* Patch by Josh Fryman, 16 Feb 2004:
  Fix byte-swapping for cfi_flash.c for different bus widths

* Patch by Jon Diekema, 14 Jeb 2004:
  Remove duplicate "FPGA Support" notes from the README file

1 files changed, 318 insertions, 0 deletions

diff --git a/board/xilinx/xilinx_enet/xemac_options.c b/board/xilinx/xilinx_enet/xemac_options.c
new file mode 100644
index 0000000..1f225f8
--- /dev/null
+++ b/board/xilinx/xilinx_enet/xemac_options.c
@@ -0,0 +1,318 @@
+/******************************************************************************
+*
+*     Author: Xilinx, Inc.
+*
+*
+*     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.
+*
+*
+*     XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
+*     COURTESY TO YOU. 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 THIRD PARTY 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.
+*
+*
+*     Xilinx hardware products are not intended for use in life support
+*     appliances, devices, or systems. Use in such applications is
+*     expressly prohibited.
+*
+*
+*     (c) Copyright 2002-2004 Xilinx Inc.
+*     All rights reserved.
+*
+*
+*     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.,
+*     675 Mass Ave, Cambridge, MA 02139, USA.
+*
+******************************************************************************/
+/*****************************************************************************/
+/**
+*
+* @file xemac_options.c
+*
+* Functions in this file handle configuration of the XEmac driver.
+*
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver   Who  Date     Changes
+* ----- ---- -------- -----------------------------------------------
+* 1.00a rpm  07/31/01 First release
+* 1.00b rpm  02/20/02 Repartitioned files and functions
+* 1.00c rpm  12/05/02 New version includes support for simple DMA
+* </pre>
+*
+******************************************************************************/
+
+/***************************** Include Files *********************************/
+
+#include "xbasic_types.h"
+#include "xemac_i.h"
+#include "xio.h"
+
+/************************** Constant Definitions *****************************/
+
+#define XEM_MAX_IFG         32	/* Maximum Interframe gap value */
+
+/**************************** Type Definitions *******************************/
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+/************************** Function Prototypes ******************************/
+
+/************************** Variable Definitions *****************************/
+
+/*
+ * A table of options and masks. This table maps the user-visible options with
+ * the control register masks. It is used in Set/GetOptions as an alternative
+ * to a series of if/else pairs. Note that the polled options does not have a
+ * corresponding entry in the control register, so it does not exist in the
+ * table.
+ */
+typedef struct {
+	u32 Option;
+	u32 Mask;
+} OptionMap;
+
+static OptionMap OptionsTable[] = {
+	{XEM_UNICAST_OPTION, XEM_ECR_UNICAST_ENABLE_MASK},
+	{XEM_BROADCAST_OPTION, XEM_ECR_BROAD_ENABLE_MASK},
+	{XEM_PROMISC_OPTION, XEM_ECR_PROMISC_ENABLE_MASK},
+	{XEM_FDUPLEX_OPTION, XEM_ECR_FULL_DUPLEX_MASK},
+	{XEM_LOOPBACK_OPTION, XEM_ECR_LOOPBACK_MASK},
+	{XEM_MULTICAST_OPTION, XEM_ECR_MULTI_ENABLE_MASK},
+	{XEM_FLOW_CONTROL_OPTION, XEM_ECR_PAUSE_FRAME_MASK},
+	{XEM_INSERT_PAD_OPTION, XEM_ECR_XMIT_PAD_ENABLE_MASK},
+	{XEM_INSERT_FCS_OPTION, XEM_ECR_XMIT_FCS_ENABLE_MASK},
+	{XEM_INSERT_ADDR_OPTION, XEM_ECR_XMIT_ADDR_INSERT_MASK},
+	{XEM_OVWRT_ADDR_OPTION, XEM_ECR_XMIT_ADDR_OVWRT_MASK},
+	{XEM_STRIP_PAD_FCS_OPTION, XEM_ECR_RECV_STRIP_ENABLE_MASK}
+};
+
+#define XEM_NUM_OPTIONS     (sizeof(OptionsTable) / sizeof(OptionMap))
+
+/*****************************************************************************/
+/**
+*
+* Set Ethernet driver/device options.  The device must be stopped before
+* calling this function.  The options are contained within a bit-mask with each
+* bit representing an option (i.e., you can OR the options together). A one (1)
+* in the bit-mask turns an option on, and a zero (0) turns the option off.
+*
+* @param InstancePtr is a pointer to the XEmac instance to be worked on.
+* @param OptionsFlag is a bit-mask representing the Ethernet options to turn on
+*        or off. See xemac.h for a description of the available options.
+*
+* @return
+*
+* - XST_SUCCESS if the options were set successfully
+* - XST_DEVICE_IS_STARTED if the device has not yet been stopped
+*
+* @note
+*
+* This function is not thread-safe and makes use of internal resources that are
+* shared between the Start, Stop, and SetOptions functions, so if one task
+* might be setting device options while another is trying to start the device,
+* protection of this shared data (typically using a semaphore) is required.
+*
+******************************************************************************/
+XStatus
+XEmac_SetOptions(XEmac * InstancePtr, u32 OptionsFlag)
+{
+	u32 ControlReg;
+	int Index;
+
+	XASSERT_NONVOID(InstancePtr != NULL);
+	XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
+
+	if (InstancePtr->IsStarted == XCOMPONENT_IS_STARTED) {
+		return XST_DEVICE_IS_STARTED;
+	}
+
+	ControlReg = XIo_In32(InstancePtr->BaseAddress + XEM_ECR_OFFSET);
+
+	/*
+	 * Loop through the options table, turning the option on or off
+	 * depending on whether the bit is set in the incoming options flag.
+	 */
+	for (Index = 0; Index < XEM_NUM_OPTIONS; Index++) {
+		if (OptionsFlag & OptionsTable[Index].Option) {
+			ControlReg |= OptionsTable[Index].Mask;	/* turn it on */
+		} else {
+			ControlReg &= ~OptionsTable[Index].Mask;	/* turn it off */
+		}
+	}
+
+	/*
+	 * TODO: need to validate addr-overwrite only if addr-insert?
+	 */
+
+	/*
+	 * Now write the control register. Leave it to the upper layers
+	 * to restart the device.
+	 */
+	XIo_Out32(InstancePtr->BaseAddress + XEM_ECR_OFFSET, ControlReg);
+
+	/*
+	 * Check the polled option
+	 */
+	if (OptionsFlag & XEM_POLLED_OPTION) {
+		InstancePtr->IsPolled = TRUE;
+	} else {
+		InstancePtr->IsPolled = FALSE;
+	}
+
+	return XST_SUCCESS;
+}
+
+/*****************************************************************************/
+/**
+*
+* Get Ethernet driver/device options. The 32-bit value returned is a bit-mask
+* representing the options.  A one (1) in the bit-mask means the option is on,
+* and a zero (0) means the option is off.
+*
+* @param InstancePtr is a pointer to the XEmac instance to be worked on.
+*
+* @return
+*
+* The 32-bit value of the Ethernet options. The value is a bit-mask
+* representing all options that are currently enabled. See xemac.h for a
+* description of the available options.
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+u32
+XEmac_GetOptions(XEmac * InstancePtr)
+{
+	u32 OptionsFlag = 0;
+	u32 ControlReg;
+	int Index;
+
+	XASSERT_NONVOID(InstancePtr != NULL);
+	XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
+
+	/*
+	 * Get the control register to determine which options are currently set.
+	 */
+	ControlReg = XIo_In32(InstancePtr->BaseAddress + XEM_ECR_OFFSET);
+
+	/*
+	 * Loop through the options table to determine which options are set
+	 */
+	for (Index = 0; Index < XEM_NUM_OPTIONS; Index++) {
+		if (ControlReg & OptionsTable[Index].Mask) {
+			OptionsFlag |= OptionsTable[Index].Option;
+		}
+	}
+
+	if (InstancePtr->IsPolled) {
+		OptionsFlag |= XEM_POLLED_OPTION;
+	}
+
+	return OptionsFlag;
+}
+
+/*****************************************************************************/
+/**
+*
+* Set the Interframe Gap (IFG), which is the time the MAC delays between
+* transmitting frames.  There are two parts required.  The total interframe gap
+* is the total of the two parts.  The values provided for the Part1 and Part2
+* parameters are multiplied by 4 to obtain the bit-time interval. The first
+* part should be the first 2/3 of the total interframe gap. The MAC will reset
+* the interframe gap timer if carrier sense becomes true during the period
+* defined by interframe gap Part1. Part1 may be shorter than 2/3 the total and
+* can be as small as zero. The second part should be the last 1/3 of the total
+* interframe gap, but can be as large as the total interframe gap. The MAC
+* will not reset the interframe gap timer if carrier sense becomes true during
+* the period defined by interframe gap Part2.
+*
+* The device must be stopped before setting the interframe gap.
+*
+* @param InstancePtr is a pointer to the XEmac instance to be worked on.
+* @param Part1 is the interframe gap part 1 (which will be multiplied by 4 to
+*        get the bit-time interval).
+* @param Part2 is the interframe gap part 2 (which will be multiplied by 4 to
+*        get the bit-time interval).
+*
+* @return
+*
+* - XST_SUCCESS if the interframe gap was set successfully
+* - XST_DEVICE_IS_STARTED if the device has not been stopped
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+XStatus
+XEmac_SetInterframeGap(XEmac * InstancePtr, u8 Part1, u8 Part2)
+{
+	u32 Ifg;
+
+	XASSERT_NONVOID(InstancePtr != NULL);
+	XASSERT_NONVOID(Part1 < XEM_MAX_IFG);
+	XASSERT_NONVOID(Part2 < XEM_MAX_IFG);
+	XASSERT_NONVOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
+
+	/*
+	 * Be sure device has been stopped
+	 */
+	if (InstancePtr->IsStarted == XCOMPONENT_IS_STARTED) {
+		return XST_DEVICE_IS_STARTED;
+	}
+
+	Ifg = Part1 << XEM_IFGP_PART1_SHIFT;
+	Ifg |= (Part2 << XEM_IFGP_PART2_SHIFT);
+	XIo_Out32(InstancePtr->BaseAddress + XEM_IFGP_OFFSET, Ifg);
+
+	return XST_SUCCESS;
+}
+
+/*****************************************************************************/
+/**
+*
+* Get the interframe gap, parts 1 and 2. See the description of interframe gap
+* above in XEmac_SetInterframeGap().
+*
+* @param InstancePtr is a pointer to the XEmac instance to be worked on.
+* @param Part1Ptr is a pointer to an 8-bit buffer into which the interframe gap
+*        part 1 value will be copied.
+* @param Part2Ptr is a pointer to an 8-bit buffer into which the interframe gap
+*        part 2 value will be copied.
+*
+* @return
+*
+* None. The values of the interframe gap parts are copied into the
+* output parameters.
+*
+******************************************************************************/
+void
+XEmac_GetInterframeGap(XEmac * InstancePtr, u8 * Part1Ptr, u8 * Part2Ptr)
+{
+	u32 Ifg;
+
+	XASSERT_VOID(InstancePtr != NULL);
+	XASSERT_VOID(Part1Ptr != NULL);
+	XASSERT_VOID(Part2Ptr != NULL);
+	XASSERT_VOID(InstancePtr->IsReady == XCOMPONENT_IS_READY);
+
+	Ifg = XIo_In32(InstancePtr->BaseAddress + XEM_IFGP_OFFSET);
+	*Part1Ptr = (Ifg & XEM_IFGP_PART1_MASK) >> XEM_IFGP_PART1_SHIFT;
+	*Part2Ptr = (Ifg & XEM_IFGP_PART2_MASK) >> XEM_IFGP_PART2_SHIFT;
+}