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Code Issues Releases Wiki Activity

new: msix中断

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This commit is contained in:
fslongjin
2022-08-23 21:10:48 +08:00
parent 554b73ec99
commit ff94280f77
6 changed files with 176 additions and 10 deletions
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41
kernel/driver/pci/msi.h
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@ -10,6 +10,7 @@ struct msi_msg_t
uint32_t address_lo;
uint32_t address_hi;
uint32_t data;
uint32_t vector_control;
};
struct pci_msi_desc_t
{
@ -27,6 +28,42 @@ struct pci_msi_desc_t
} msi_attribute;
};
/**
* @brief msi capability list的结构
*
*/
struct pci_msi_cap_t
{
uint8_t cap_id;
uint8_t next_off;
uint16_t msg_ctrl;
uint32_t msg_addr_lo;
uint32_t msg_addr_hi;
uint16_t msg_data;
uint16_t Rsvd;
uint32_t mask;
uint32_t pending;
};
/**
* @brief MSI-X的capability list结构体
*
*/
struct pci_msix_cap_t
{
uint8_t cap_id;
uint8_t next_off;
uint16_t msg_ctrl;
uint32_t dword1; // 该DWORD的组成为：[Table Offset][BIR2:0].
// 由于Table Offset是8字节对齐的，因此mask掉该dword的BIR部分，就是table offset的值
uint32_t dword2; // 该DWORD的组成为：[Pending Bit Offset][Pending Bit BIR2:0].
// 由于Pending Bit Offset是8字节对齐的，因此mask掉该dword的BIR部分，就是Pending Bit Offset的值
};
/**
* @brief msi描述符
*
@ -40,7 +77,7 @@ struct msi_desc_t
struct pci_device_structure_header_t *pci_dev; // 对应的pci设备的结构体
struct msi_msg_t msg; // msi消息
uint16_t msi_index; // msi描述符的index
struct pci_msi_desc_t pci; // 与pci相关的msi描述符数据
struct pci_msi_desc_t pci; // 与pci相关的msi描述符数据
};
/**
@ -54,7 +91,7 @@ struct msi_desc_t
*
* @return 返回码
*/
int pci_enable_msi(struct msi_desc_t * msi_desc);
int pci_enable_msi(struct msi_desc_t *msi_desc);
/**
* @brief 禁用指定设备的msi