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31 ******************************************************************************/
32 /*****************************************************************************/
35 * @file xemaclite_sinit.c
37 * This file contains the implementation of the XEmacLite driver's static
38 * initialization functionality.
44 * MODIFICATION HISTORY:
46 * Ver Who Date Changes
47 * ----- ---- -------- -----------------------------------------------
48 * 1.12a sv 11/28/07 First release
52 ******************************************************************************/
54 /***************************** Include Files *********************************/
56 #include "xparameters.h"
57 #include "xemaclite.h"
59 /************************** Constant Definitions *****************************/
61 /**************************** Type Definitions *******************************/
63 /***************** Macros (Inline Functions) Definitions *********************/
65 /************************** Function Prototypes ******************************/
67 /************************** Variable Definitions *****************************/
68 extern XEmacLite_Config XEmacLite_ConfigTable[];
70 /*****************************************************************************/
73 * Lookup the device configuration based on the unique device ID. The table
74 * XEmacLite_ConfigTable contains the configuration info for each device in the
77 * @param DeviceId is the unique device ID of the device being looked up.
79 * @return A pointer to the configuration table entry corresponding to the
80 * given device ID, or NULL if no match is found.
84 ******************************************************************************/
85 XEmacLite_Config *XEmacLite_LookupConfig(u16 DeviceId)
87 XEmacLite_Config *CfgPtr = NULL;
90 for (Index = 0; Index < XPAR_XEMACLITE_NUM_INSTANCES; Index++) {
91 if (XEmacLite_ConfigTable[Index].DeviceId == DeviceId) {
92 CfgPtr = &XEmacLite_ConfigTable[Index];
101 /*****************************************************************************/
104 * Initialize a specific XEmacLite instance/driver. The initialization entails:
105 * - Initialize fields of the XEmacLite instance structure.
107 * The driver defaults to polled mode operation.
109 * @param InstancePtr is a pointer to the XEmacLite instance.
110 * @param DeviceId is the unique id of the device controlled by this
111 * XEmacLite instance. Passing in a device id associates the
112 * generic XEmacLite instance to a specific device, as chosen by
113 * the caller or application developer.
116 * - XST_SUCCESS if initialization was successful.
117 * - XST_DEVICE_NOT_FOUND/XST_FAILURE if device configuration
118 * information was not found for a device with the supplied
123 ******************************************************************************/
124 int XEmacLite_Initialize(XEmacLite *InstancePtr, u16 DeviceId)
127 XEmacLite_Config *EmacLiteConfigPtr;/* Pointer to Configuration data. */
130 * Verify that each of the inputs are valid.
132 Xil_AssertNonvoid(InstancePtr != NULL);
135 * Lookup the device configuration in the configuration table. Use this
136 * configuration info down below when initializing this driver.
138 EmacLiteConfigPtr = XEmacLite_LookupConfig(DeviceId);
139 if (EmacLiteConfigPtr == NULL) {
140 return XST_DEVICE_NOT_FOUND;
143 Status = XEmacLite_CfgInitialize(InstancePtr,
145 EmacLiteConfigPtr->BaseAddress);
146 if (Status != XST_SUCCESS) {