[include/uapi/linux/pci_regs.h]#definePCI_CFG_SPACE_SIZE 256#definePCI_CFG_SPACE_EXP_SIZE 4096[drivers/pci/pci.c]intpci_find_next_ext_capability(structpci_dev *dev,intstart,intcap){ u32 header;intttl;intpos = PCI_CFG_SPACE_SIZE;/* minimum 8 bytes per capability */ttl = (PCI_CFG...
比较常用的是PCI_CAP_ID_EXP, 表明其为PCIE的Capability, 还有MSI等中断相关的Capability. 扩展配置空间 Extended Capabilities 从0x100开始到0x1000的范围则是PCIE的扩展配置空间. 如下图 和标准的Capability类似, 其也是一个单向链表, 不过是从0x100处开始是第一个. 直到Next Capability Offset为0时结束. 其具体...
#define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */ #define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */ #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ #define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ #define PCI_CAP_ID_AF 0x13 /* PCI Advanced ...
解析桥设备的PCIe配置空间头。具体有PCI_INTERRUPT_PIN、PCI_BASE_ADDRESS、PCI_EXP_SLTCAP、PCI_CAP_ID_SSVID、PCI_SSVID_VENDOR_ID和桥的地址空间。 配置、初始化和管理Function。主要是配置MPS、Extended Tags、ordering、LTR等,初始化MSI、PM、VPD、IOV、ATS、AER等,将pci_dev挂到pci_bus的devices链表,最后...
#define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */ #define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */ #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ #define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ ...
如果要重新强制PCIE速率为2.5GT/s,可以输入以下命令:setpci -s 00:1c.0 CAP_EXP+0x30.b=0x0setpci -s 00:1c.0 CAP_EXP+0x10.b=0x20 PCIE配置空间设置_缥缈孤鸿_jason的博客-CSDN博客 4.官方的配置控制bit表 http://arbor.mindshare.com/arbor/refview?pane=index ...
#define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */ #define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */ #define PCI_CAP_ID_SECDEV 0x0F /* Secure Device */ #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ ...
;登录后复制// Only if devfn is equal to 0, hot plugging is supported.登录后复制if devfn == 0 {登录后复制let offset = self.config.ext_cap_offset;登录后复制le_write_set_value_u16(登录后复制&mut self.config.config,登录后复制(offset + PCI_EXP_SLTSTA) as usize,登录后复制PCI_EXP_SLT...
#define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */ #define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */ #define PCI_CAP_ID_EXP 0x10 /* PCI Express */ #define PCI_CAP_ID_MSIX 0x11 /* MSI-X */ ...
ls=$(setpci -s $dev CAP_EXP+12.W) max_speed=$(("0x$lc"&0xF)) echo"Link capabilities:"$lc echo"Max link speed:"$max_speed echo"Link status:"$ls echo"Current link speed:"$(("0x$ls"&0xF))if[ -z"$speed"]; then speed=$max_speed ...