drivers/net/ethernet/marvell/octeontx2/af/rvu.c

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/marvell/octeontx2/af/rvu.c

Extension

.c

Size

94701 bytes

Lines

3794

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• 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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/interrupt.h
• linux/delay.h
• linux/irq.h
• linux/pci.h
• linux/sysfs.h
• cgx.h
• rvu.h
• rvu_reg.h
• ptp.h
• mcs.h
• rvu_trace.h
• rvu_npc_hash.h
• cn20k/reg.h
• cn20k/api.h
• cn20k/npc.h

Detected Declarations

• function rvu_setup_hw_capabilities
• function rvu_poll_reg
• function rvu_alloc_rsrc
• function rvu_alloc_rsrc_contig
• function rvu_free_rsrc_contig
• function rvu_rsrc_check_contig
• function rvu_free_rsrc
• function rvu_rsrc_free_count
• function is_rsrc_free
• function rvu_alloc_bitmap
• function rvu_free_bitmap
• function rvu_get_lf
• function rvu_get_blkaddr
• function rvu_update_rsrc_map
• function rvu_get_pf_numvfs
• function rvu_get_hwvf
• function is_pf_func_valid
• function is_block_implemented
• function rvu_check_block_implemented
• function rvu_setup_rvum_blk_revid
• function rvu_clear_rvum_blk_revid
• function rvu_lf_reset
• function rvu_block_reset
• function rvu_reset_all_blocks
• function rvu_scan_block
• function rvu_check_min_msix_vec
• function rvu_setup_msix_resources
• function rvu_reset_msix
• function rvu_free_hw_resources
• function rvu_setup_pfvf_macaddress
• function rvu_fwdata_init
• function rvu_fwdata_exit
• function rvu_setup_nix_hw_resource
• function rvu_setup_cpt_hw_resource
• function rvu_get_lbk_bufsize
• function rvu_setup_hw_resources
• function rvu_aq_free
• function rvu_aq_alloc
• function rvu_mbox_handler_ready
• function rvu_get_rsrc_mapcount
• function is_blktype_attached
• function is_pffunc_map_valid
• function rvu_lookup_rsrc
• function rvu_get_blkaddr_from_slot
• function rvu_detach_block
• function rvu_detach_rsrcs
• function rvu_mbox_handler_detach_resources
• function rvu_get_nix_blkaddr

Annotated Snippet

static struct pci_driver rvu_driver = {
	.name = DRV_NAME,
	.id_table = rvu_id_table,
	.probe = rvu_probe,
	.remove = rvu_remove,
	.shutdown = rvu_shutdown,
};

static int __init rvu_init_module(void)
{
	int err;

	pr_info("%s: %s\n", DRV_NAME, DRV_STRING);

	err = pci_register_driver(&cgx_driver);
	if (err < 0)
		return err;

	err = pci_register_driver(&ptp_driver);
	if (err < 0)
		goto ptp_err;

	err = pci_register_driver(&mcs_driver);
	if (err < 0)
		goto mcs_err;

	err =  pci_register_driver(&rvu_driver);
	if (err < 0)
		goto rvu_err;

	return 0;
rvu_err:
	pci_unregister_driver(&mcs_driver);
mcs_err:
	pci_unregister_driver(&ptp_driver);
ptp_err:
	pci_unregister_driver(&cgx_driver);

	return err;
}

static void __exit rvu_cleanup_module(void)
{
	pci_unregister_driver(&rvu_driver);
	pci_unregister_driver(&mcs_driver);
	pci_unregister_driver(&ptp_driver);
	pci_unregister_driver(&cgx_driver);
}

module_init(rvu_init_module);
module_exit(rvu_cleanup_module);

Annotation

• Immediate include surface: `linux/module.h`, `linux/interrupt.h`, `linux/delay.h`, `linux/irq.h`, `linux/pci.h`, `linux/sysfs.h`, `cgx.h`, `rvu.h`.
• Detected declarations: `function rvu_setup_hw_capabilities`, `function rvu_poll_reg`, `function rvu_alloc_rsrc`, `function rvu_alloc_rsrc_contig`, `function rvu_free_rsrc_contig`, `function rvu_rsrc_check_contig`, `function rvu_free_rsrc`, `function rvu_rsrc_free_count`, `function is_rsrc_free`, `function rvu_alloc_bitmap`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: pattern 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.