pci

Author: zhuzhuzhus

components/drivers/include/drivers/pci.h

@@ -596,8 +596,7 @@ const struct rt_pci_device_id *rt_pci_match_ids(struct rt_pci_device *pdev,
 
 rt_err_t rt_pci_driver_register(struct rt_pci_driver *pdrv);
 rt_err_t rt_pci_device_register(struct rt_pci_device *pdev);
-struct rt_pci_bus_resource *rt_pci_find_bar(struct rt_pci_device* pdev,rt_ubase_t flags);
-
+struct rt_pci_bus_resource *rt_pci_find_bar(struct rt_pci_device* pdev,rt_ubase_t flags,int index);
 #define RT_PCI_DRIVER_EXPORT(driver)    RT_DRIVER_EXPORT(driver, pci, BUILIN)
 
 extern struct rt_spinlock rt_pci_lock;

components/drivers/pci/pci.c

@@ -712,12 +712,16 @@ rt_err_t rt_pci_device_alloc_resource(struct rt_pci_host_bridge *host_bridge,
     return err;
 }
 
-struct rt_pci_bus_resource *rt_pci_find_bar(struct rt_pci_device* pdev,rt_ubase_t flags)
+struct rt_pci_bus_resource *rt_pci_find_bar(struct rt_pci_device* pdev,rt_ubase_t flags,int index)
 {
     for (int i = 0; i < RT_PCI_BAR_NR_MAX; i++)
     {
         if (pdev->resource[i].flags == flags)
-            return &pdev->resource[i];
+        {
+            index--;
+            if (index == 0)
+                return &pdev->resource[i];
+        }
     }
     return RT_NULL;
 }