Linux PCI Device Lead

1 week ago

Bengaluru, Karnataka, India TestCore IT Solutions Pvt. Ltd. Full time ₹ 1,04,000 - ₹ 1,30,878 per year

Job Title: Linux PCI Device LeadExperience: 8 to 10+ yearsKey Responsibilities:

·    Architect and Lead PCI Subsystem Development:

·    Drive design, development, and maintenance of PCI and PCIe subsystems and drivers in the Linux kernel.

·    Ensure seamless enumeration, configuration, power management, and hotplug support for PCI devices.

·    Device Enablement and Bring-up:

·    Lead platform bring-up activities involving PCI/PCIe devices (e.g., network, storage, GPU, NVMe).

·    Validate and debug device-tree or ACPI configurations for PCI host bridges and endpoints.

·    Kernel and Firmware Interaction:

·    Collaborate with firmware/bootloader teams for correct BAR, MSI/MSI-X, and IOMMU configurations.

·    Work closely with architecture teams to support secure boot and DMA protection for PCI devices.

·    Performance and Power Optimization:

·    Analyze PCI bandwidth, latency, and power bottlenecks.

·    Implement ASPM, LTR, and other low-power states in compliance with PCIe specs.

·    Debugging and Issue Resolution:

·    Use Linux tools (lspci, setpci, tracepoints, ftrace, perf, etc.) and oscilloscopes/analyzers for low-level debugging.

·    Root-cause platform PCI failures and compatibility issues across hardware and kernel versions.

·    Upstream and Compliance:

·    Contribute patches upstream to the Linux kernel PCI subsystem.

·    Ensure compliance with PCI-SIG and Linux kernel community best practices.

·    Cross-Team Collaboration:

·    Interface with SoC, BIOS/UEFI, board, and validation teams to ensure robust PCIe device support across platforms.

Required Expertise:

·    Deep understanding of Linux kernel internals, especially drivers/pci and subsystems like hotplug, MSI, IOMMU, DMA API.

·    Hands-on experience with PCIe Gen3/Gen4/Gen5 devices and related PHY bring-up issues.

·    Familiarity with ARM64 and x86 architectures, DT/ACPI handling for PCI devices.

·    Proficient in C programming, Linux kernel debugging (GDB, crash dumps), and tools like dmesg, lspci, pcie_check.

·    Expertise in power management (runtime, suspend/resume flows) for PCI devices.

·    Experience with Secure Boot, TrustZone, and virtualization passthrough (VFIO/SR-IOV) for PCIe devices is a strong plus.

·    Experience using Yocto, Buildroot, or other embedded Linux build systems.

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