Hi Jon, I have a Intel Haswell platform in hand, and our team want to use NTB in this platform. I checked the current intel NTB driver in Linux kernel, I found the Haswell NTB pci device id is not contained in ntb_pci_tbl[]. I want to know whether current kernel ntb driver can support the ntb device in Haswell platform ?
Haswell NTB device id: >From Haswell EDS 7.4.2 did Bus: 0 Device: 3 Function: 0 Offset: 2 Bit Attr Default Description 15:0 RO-V 2F08h Device_Identification_Number — Device ID values vary from function to function. Bits 15:8 are equal to 0x2F. The following list is a breakdown of the function groups. 0x2F00 - 0x2F1F : PCI Express and DMI2 0x2F20 - 0x2F3F : Integrated I/O Features 0x2F40 - 0x2F5F : Performance Monitors 0x2F80 - 0x2F9F : Intel QPI 0x2FA0 - 0x2FBF : Home Agent/Memory Controller 0x2FC0 - 0x2FDF : Power Management 0x2FE0 - 0x2FFF : Cbo/Ring Default value may vary based on bus, device, and function of this CSR location. Current ntb_pci_tbl[] in Linux: #define PCI_DEVICE_ID_INTEL_NTB_B2B_JSF 0x3725 #define PCI_DEVICE_ID_INTEL_NTB_PS_JSF 0x3726 #define PCI_DEVICE_ID_INTEL_NTB_SS_JSF 0x3727 #define PCI_DEVICE_ID_INTEL_NTB_B2B_SNB 0x3C0D #define PCI_DEVICE_ID_INTEL_NTB_PS_SNB 0x3C0E #define PCI_DEVICE_ID_INTEL_NTB_SS_SNB 0x3C0F #define PCI_DEVICE_ID_INTEL_NTB_B2B_IVT 0x0E0D #define PCI_DEVICE_ID_INTEL_NTB_PS_IVT 0x0E0E #define PCI_DEVICE_ID_INTEL_NTB_SS_IVT 0x0E0F #define PCI_DEVICE_ID_INTEL_NTB_B2B_HSX 0x2F0D #define PCI_DEVICE_ID_INTEL_NTB_PS_HSX 0x2F0E #define PCI_DEVICE_ID_INTEL_NTB_SS_HSX 0x2F0F #define PCI_DEVICE_ID_INTEL_NTB_B2B_BWD 0x0C4E So we should modify the default device id to 0x2F0D, 0x2F0E or 0x2F0F ? What's the difference between them? Thanks! Yijing. -- Thanks! Yijing -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
