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- #ifdef __KERNEL__
- #include <asm/io.h>
- #include <linux/cdev.h>
- #include <linux/module.h>
- #include <linux/platform_device.h>
- #include <linux/delay.h>
- #include <linux/clk.h>
- #include <linux/io.h>
- #include <linux/mm.h>
- #include <linux/timer.h>
- #include <linux/kernel.h>
- #include <linux/init.h>
- #include <linux/workqueue.h>
- #include <linux/slab.h>
- #include <linux/proc_fs.h>
- #include <linux/debugfs.h>
- #include <linux/miscdevice.h>
- #include <linux/uaccess.h>
- #include <linux/interrupt.h>
- #else
- #include <stdio.h>
- #include <stdlib.h>
- #include <stdbool.h>
- #endif
- #include "vivdw200_irq_queue.h"
- #ifdef __KERNEL__
- #define dw_info(...)
- #else
- #define dw_info(...)
- #endif
- //enqueue
- int vivdw200_enqueue(vivdw200_mis_t *data,vivdw200_mis_t* head)
- {
- #ifdef __KERNEL__
- vivdw200_mis_t* new_node = (vivdw200_mis_t*)kmalloc(sizeof(vivdw200_mis_t), GFP_KERNEL); //create new node
- if (data == NULL || head == NULL) {
- //dw_info("%s: input wrong parameter\n", __func__);
- return -1;
- }
- new_node->val = data->val;
- dw_info("%s: new_node %px", __func__, new_node);
- INIT_LIST_HEAD(&new_node->list);
- list_add_tail(&new_node->list, &head->list); //append to tail
- #endif
- return 0;
- }
- //dequeue && release memory
- int vivdw200_dequeue(vivdw200_mis_t* data, vivdw200_mis_t* head)
- {
- #ifdef __KERNEL__
- vivdw200_mis_t* entry;
- if (data == NULL || head == NULL) {
- //dw_info("%s: input wrong parameter\n", __func__);
- return -1;
- }
- if (list_empty(&head->list)) {
- //dw_info("%s: There is no node\n", __func__);
- return -1;
- }
- entry = list_first_entry(&head->list, vivdw200_mis_t, list);
- dw_info("%s: entry %px", __func__, entry);
- data->val = entry->val;
- list_del_init(&entry->list);
- kfree(entry);
- #endif
- return 0;
- }
- bool vivdw200_is_queue_empty( vivdw200_mis_t* head)
- {
- #ifdef __KERNEL__
- return list_empty(&head->list);
- #else
- return 0;
- #endif
- }
- int vivdw200_create_circle_queue(vivdw200_mis_list_t* pCList, int number)
- {
- #ifdef __KERNEL__
- int i;
- vivdw200_mis_t* pMisNode;
- if (pCList == NULL || number <= 0) {
- dw_info("%s: create circle queue failed\n", __func__);
- return -1;
- }
- if (pCList->pHead == NULL) {
- pCList->pHead = (vivdw200_mis_t*)kmalloc(sizeof(vivdw200_mis_t), GFP_KERNEL);
- INIT_LIST_HEAD(&pCList->pHead->list);
- pCList->pRead = pCList->pHead;
- pCList->pWrite = pCList->pHead;
- }
- dw_info("%s:pHead %px\n", __func__, pCList->pHead);
- for (i = 0; i < number - 1; i++) {
- pMisNode = (vivdw200_mis_t*)kmalloc(sizeof(vivdw200_mis_t), GFP_KERNEL);
- INIT_LIST_HEAD(&pMisNode->list);
- list_add_tail(&pMisNode->list, &pCList->pHead->list);
- dw_info("%s:pMisNode %px\n", __func__, pMisNode);
- }
- #endif
- return 0;
- }
- int vivdw200_destroy_circle_queue(vivdw200_mis_list_t* pCList)
- {
- #ifdef __KERNEL__
- vivdw200_mis_t* pMisNode;
- if (pCList == NULL || (pCList->pHead == NULL) ) {
- dw_info("%s: destroy circle queue failed. pClist %px\n", __func__, pCList);
- return -1;
- }
- while(!list_empty(&pCList->pHead->list)) {
- pMisNode = list_first_entry(&pCList->pHead->list, vivdw200_mis_t, list);
- dw_info("%s:pMisNode %px\n", __func__, pMisNode);
- list_del(&pMisNode->list);
- kfree(pMisNode);
- pMisNode = NULL;
- }
- dw_info("%s:pHead %px\n", __func__, pCList->pHead);
- kfree(pCList->pHead);
- pCList->pHead = NULL;
- pCList->pRead = NULL;
- pCList->pWrite = NULL;
- #endif
- return 0;
- }
- int vivdw200_read_circle_queue(vivdw200_mis_t* data, vivdw200_mis_list_t* pCList)
- {
- #ifdef __KERNEL__
- //vivdw200_mis_t* pReadEntry;
- if (pCList == NULL) {
- dw_info("%s: can not read circle queue\n", __func__);
- return -1;
- }
- if (pCList->pRead == pCList->pWrite) {
- dw_info("%s: There is no irq mis data\n", __func__);
- return -1;
- }
- data->val = pCList->pRead->val;
- dw_info("%s: entry %px, msi %08x\n", __func__, pCList->pRead, data->val);
- /*Get the next entry that link with read entry list*/
- /*Update read pointer to next entry*/
- pCList->pRead = list_first_entry(&pCList->pRead->list, vivdw200_mis_t, list);
- //pCList->pRead = pReadEntry;
- #endif
- return 0;
- }
- int vivdw200_write_circle_queue(vivdw200_mis_t* data, vivdw200_mis_list_t* pCList)
- {
- #ifdef __KERNEL__
- vivdw200_mis_t* pWriteEntry;
- if (pCList == NULL) {
- dw_info("%s: can not read circle queue\n", __func__);
- return -1;
- }
- pCList->pWrite->val = data->val;
- dw_info("%s: entry %px, msi %08x\n", __func__, pCList->pWrite, data->val);
- /*get the next write entry pointer that link with the write entry list*/
- pWriteEntry = list_first_entry(&pCList->pWrite->list, vivdw200_mis_t, list);
- /*Update write pointer to point next entry*/
- pCList->pWrite = pWriteEntry;
- #endif
- return 0;
- }
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