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🆕 递归枚举pci总线上的设备

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This commit is contained in:
fslongjin
2022-03-21 23:44:17 +08:00
parent 5e9bd1d44e
commit db3749ece4
3 changed files with 276 additions and 38 deletions
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18
kernel/driver/pci/pci.h
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@ -9,6 +9,9 @@
#define E_DEVICE_INVALID -1
#define E_WRONG_HEADER_TYPE -2
// pci设备结构信息的链表
struct List * pci_device_structure_list = NULL;
/**
* @brief 初始化pci驱动
*
@ -18,6 +21,7 @@ void pci_init();
// pci设备结构的通用标题字段
struct pci_device_structure_header_t
{
struct List list;
uint16_t Vendor_ID; // 供应商ID 0xffff是一个无效值，在读取访问不存在的设备的配置空间寄存器时返回
uint16_t Device_ID; // 设备ID，标志特定设备
@ -45,7 +49,7 @@ struct pci_device_structure_header_t
*/
struct pci_device_structure_general_device_t
{
struct pci_device_structure_header_t header;
struct pci_device_structure_header_t *header;
uint32_t BAR0;
uint32_t BAR1;
uint32_t BAR2;
@ -77,7 +81,7 @@ struct pci_device_structure_general_device_t
*/
struct pci_device_structure_pci_to_pci_bridge_t
{
struct pci_device_structure_header_t header;
struct pci_device_structure_header_t *header;
uint32_t BAR0;
uint32_t BAR1;
@ -122,7 +126,7 @@ struct pci_device_structure_pci_to_pci_bridge_t
*/
struct pci_device_structure_pci_to_cardbus_bridge_t
{
struct pci_device_structure_header_t header;
struct pci_device_structure_header_t *header;
uint32_t CardBus_Socket_ExCa_base_address;
@ -176,4 +180,10 @@ uint pci_read_config(uchar bus, uchar slot, uchar func, uchar offset);
* @param func 功能号
* @return 返回的header的指针
*/
void* pci_read_header(int *type, uchar bus, uchar slot, uchar func);
void* pci_read_header(int *type, uchar bus, uchar slot, uchar func, bool add_to_list);
/**
* @brief 扫描所有pci总线上的所有设备
*
*/
void pci_checkAllBuses();