arch/mips/pci/msi-octeon.c
Source file repositories/reference/linux-study-clean/arch/mips/pci/msi-octeon.c
File Facts
- System
- Linux kernel
- Corpus path
arch/mips/pci/msi-octeon.c- Extension
.c- Size
- 12494 bytes
- Lines
- 415
- Domain
- Architecture Layer
- Bucket
- arch/mips
- Inferred role
- Architecture Layer: exported/initcall integration point
- Status
- integration implementation candidate
Why This File Exists
CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
- Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
- Touches IRQ or DMA behavior; this matters for the representative real-device path.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/kernel.hlinux/init.hlinux/msi.hlinux/spinlock.hlinux/interrupt.hasm/octeon/octeon.hasm/octeon/cvmx-npi-defs.hasm/octeon/cvmx-pci-defs.hasm/octeon/cvmx-npei-defs.hasm/octeon/cvmx-sli-defs.hasm/octeon/cvmx-pexp-defs.hasm/octeon/pci-octeon.h
Detected Declarations
function arch_setup_msi_irqfunction arch_teardown_msi_irqfunction octeon_irq_msi_enable_pciefunction octeon_irq_msi_disable_pciefunction octeon_irq_msi_enable_pcifunction __octeon_msi_do_interruptfunction octeon_msi_initializemodule init octeon_msi_initialize
Annotated Snippet
subsys_initcall(octeon_msi_initialize);Annotation
- Immediate include surface: `linux/kernel.h`, `linux/init.h`, `linux/msi.h`, `linux/spinlock.h`, `linux/interrupt.h`, `asm/octeon/octeon.h`, `asm/octeon/cvmx-npi-defs.h`, `asm/octeon/cvmx-pci-defs.h`.
- Detected declarations: `function arch_setup_msi_irq`, `function arch_teardown_msi_irq`, `function octeon_irq_msi_enable_pcie`, `function octeon_irq_msi_disable_pcie`, `function octeon_irq_msi_enable_pci`, `function __octeon_msi_do_interrupt`, `function octeon_msi_initialize`, `module init octeon_msi_initialize`.
- Atlas domain: Architecture Layer / arch/mips.
- Implementation status: integration implementation candidate.
- Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
- IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.