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[feat] add pci api,the pci/pcie driver 

add pci api,the pci/pcie driver writer can use this to get resource of current device with flag,there are three flag :
1. PCI_BUS_REGION_F_MEM it mean memory space
2. PCI_BUS_REGION_F_IO it mean io space
3. PCI_BUS_REGION_F_PREFETCH it mean prefetchable memory
This commit is contained in:
zhuzhuzhu 2024-10-05 14:30:52 +08:00 committed by GitHub
parent b9c3bdf7eb
commit ef426851ea
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GPG Key ID: B5690EEEBB952194
2 changed files with 15 additions and 1 deletions
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2
components/drivers/include/drivers/pci.h
View File

@ -596,7 +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,int index);
#define RT_PCI_DRIVER_EXPORT(driver) RT_DRIVER_EXPORT(driver, pci, BUILIN)
extern struct rt_spinlock rt_pci_lock;

14
components/drivers/pci/pci.c
View File

@ -712,6 +712,20 @@ 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,int index)
{
for (int i = 0; i < RT_PCI_BAR_NR_MAX; i++)
{
if (pdev->resource[i].flags == flags)
{
index--;
if (index == 0)
return &pdev->resource[i];
}
}
return RT_NULL;
}
void rt_pci_enum_device(struct rt_pci_bus *bus,
rt_bool_t (callback(struct rt_pci_device *, void *)), void *data)
{