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Code Issues Releases Wiki Activity

🆕 按照class来读取对应的pci设备的接口

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This commit is contained in:
fslongjin
2022-03-30 15:36:00 +08:00
parent 576d9e33d9
commit 741aa09b9b
6 changed files with 124 additions and 38 deletions
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32
kernel/driver/pci/pci.c
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@ -436,7 +436,7 @@ void pci_checkAllBuses()
void pci_init()
{
kinfo("Initializing PCI bus!");
kinfo("Initializing PCI bus...");
pci_checkAllBuses();
kinfo("Total pci device and function num = %d", count_device_list);
@ -531,7 +531,7 @@ int pci_enable_msi(void *header, uint8_t vector, uint32_t processor, uint8_t edg
pci_write_config(ptr->bus, ptr->device, ptr->func, cap_ptr, tmp);
break;
case 0x01: // pci to pci bridge
if (!(ptr->Status & 0x10))
return E_NOT_SUPPORT_MSI;
@ -574,4 +574,32 @@ int pci_enable_msi(void *header, uint8_t vector, uint32_t processor, uint8_t edg
}
return 0;
}
/**
* @brief 获取 device structure
*
* @param class_code
* @param sub_class
* @param res 返回的结果数组
*/
void pci_get_device_structure(uint8_t class_code, uint8_t sub_class, struct pci_device_structure_header_t *res[], uint32_t *count_res)
{
struct pci_device_structure_header_t *ptr_begin = container_of(pci_device_structure_list, struct pci_device_structure_header_t, list);
struct pci_device_structure_header_t *ptr = container_of(pci_device_structure_list, struct pci_device_structure_header_t, list);
*count_res = 0;
for (int i = 0; i < count_device_list; ++i)
{
if ((ptr->Class_code == 1) && (ptr->SubClass == 6))
{
kdebug("[%d] class_code=%d, sub_class=%d, progIF=%d", i, ptr->Class_code, ptr->SubClass, ptr->ProgIF);
res[*count_res] = ptr;
++(*count_res);
}
ptr = container_of(list_next(&(ptr->list)), struct pci_device_structure_header_t, list);
}
}