drivers/net/dsa/b53/b53_common.c

Source file repositories/reference/linux-study-clean/drivers/net/dsa/b53/b53_common.c

File Facts

System: Linux kernel
Corpus path: drivers/net/dsa/b53/b53_common.c
Extension: .c
Size: 84037 bytes
Lines: 3334
Domain: Driver Families
Bucket: drivers/net
Inferred role: Driver Families: exported/initcall integration point
Status: integration 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.
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.
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/delay.h
linux/export.h
linux/gpio/consumer.h
linux/kernel.h
linux/math.h
linux/minmax.h
linux/module.h
linux/platform_data/b53.h
linux/phy.h
linux/phylink.h
linux/etherdevice.h
linux/if_bridge.h
linux/if_vlan.h
net/dsa.h
b53_regs.h
b53_priv.h

Detected Declarations

struct b53_mib_desc
struct b53_chip_data
enum b53_devlink_resource_id
function b53_do_vlan_op
function b53_set_vlan_entry
function b53_get_vlan_entry
function b53_set_eap_mode
function b53_set_forwarding
function b53_enable_vlan
function b53_set_jumbo
function b53_flush_arl
function b53_fast_age_port
function b53_fast_age_vlan
function b53_imp_vlan_setup
function b53_port_set_ucast_flood
function b53_port_set_mcast_flood
function b53_port_set_learning
function b53_port_set_isolated
function b53_eee_enable_set
function b53_setup_port
function b53_enable_port
function b53_disable_port
function b53_brcm_hdr_setup
function b53_enable_cpu_port
function b53_enable_mib
function b53_enable_stp
function b53_default_pvid
function b53_vlan_port_needs_forced_tagged
function b53_vlan_port_may_join_untagged
function b53_configure_vlan
function b53_for_each_port
function b53_switch_reset_gpio
function b53_switch_reset
function b53_phy_read16
function b53_phy_write16
function b53_reset_switch
function b53_apply_config
function b53_reset_mib
function b53_get_mib_size
function b53_get_strings
function b53_get_ethtool_stats
function b53_get_ethtool_phy_stats
function b53_get_sset_count
function b53_devlink_vlan_table_get
function b53_setup_devlink_resources
function b53_setup
function b53_teardown
function b53_force_link

Annotated Snippet

struct b53_mib_desc {
	u8 size;
	u8 offset;
	const char *name;
};

/* BCM5365 MIB counters */
static const struct b53_mib_desc b53_mibs_65[] = {
	{ 8, 0x00, "TxOctets" },
	{ 4, 0x08, "TxDropPkts" },
	{ 4, 0x10, "TxBroadcastPkts" },
	{ 4, 0x14, "TxMulticastPkts" },
	{ 4, 0x18, "TxUnicastPkts" },
	{ 4, 0x1c, "TxCollisions" },
	{ 4, 0x20, "TxSingleCollision" },
	{ 4, 0x24, "TxMultipleCollision" },
	{ 4, 0x28, "TxDeferredTransmit" },
	{ 4, 0x2c, "TxLateCollision" },
	{ 4, 0x30, "TxExcessiveCollision" },
	{ 4, 0x38, "TxPausePkts" },
	{ 8, 0x44, "RxOctets" },
	{ 4, 0x4c, "RxUndersizePkts" },
	{ 4, 0x50, "RxPausePkts" },
	{ 4, 0x54, "Pkts64Octets" },
	{ 4, 0x58, "Pkts65to127Octets" },
	{ 4, 0x5c, "Pkts128to255Octets" },
	{ 4, 0x60, "Pkts256to511Octets" },
	{ 4, 0x64, "Pkts512to1023Octets" },
	{ 4, 0x68, "Pkts1024to1522Octets" },
	{ 4, 0x6c, "RxOversizePkts" },
	{ 4, 0x70, "RxJabbers" },
	{ 4, 0x74, "RxAlignmentErrors" },
	{ 4, 0x78, "RxFCSErrors" },
	{ 8, 0x7c, "RxGoodOctets" },
	{ 4, 0x84, "RxDropPkts" },
	{ 4, 0x88, "RxUnicastPkts" },
	{ 4, 0x8c, "RxMulticastPkts" },
	{ 4, 0x90, "RxBroadcastPkts" },
	{ 4, 0x94, "RxSAChanges" },
	{ 4, 0x98, "RxFragments" },
};

#define B53_MIBS_65_SIZE	ARRAY_SIZE(b53_mibs_65)

/* BCM63xx MIB counters */
static const struct b53_mib_desc b53_mibs_63xx[] = {
	{ 8, 0x00, "TxOctets" },
	{ 4, 0x08, "TxDropPkts" },
	{ 4, 0x0c, "TxQoSPkts" },
	{ 4, 0x10, "TxBroadcastPkts" },
	{ 4, 0x14, "TxMulticastPkts" },
	{ 4, 0x18, "TxUnicastPkts" },
	{ 4, 0x1c, "TxCollisions" },
	{ 4, 0x20, "TxSingleCollision" },
	{ 4, 0x24, "TxMultipleCollision" },
	{ 4, 0x28, "TxDeferredTransmit" },
	{ 4, 0x2c, "TxLateCollision" },
	{ 4, 0x30, "TxExcessiveCollision" },
	{ 4, 0x38, "TxPausePkts" },
	{ 8, 0x3c, "TxQoSOctets" },
	{ 8, 0x44, "RxOctets" },
	{ 4, 0x4c, "RxUndersizePkts" },
	{ 4, 0x50, "RxPausePkts" },
	{ 4, 0x54, "Pkts64Octets" },
	{ 4, 0x58, "Pkts65to127Octets" },
	{ 4, 0x5c, "Pkts128to255Octets" },
	{ 4, 0x60, "Pkts256to511Octets" },
	{ 4, 0x64, "Pkts512to1023Octets" },
	{ 4, 0x68, "Pkts1024to1522Octets" },
	{ 4, 0x6c, "RxOversizePkts" },
	{ 4, 0x70, "RxJabbers" },
	{ 4, 0x74, "RxAlignmentErrors" },
	{ 4, 0x78, "RxFCSErrors" },
	{ 8, 0x7c, "RxGoodOctets" },
	{ 4, 0x84, "RxDropPkts" },
	{ 4, 0x88, "RxUnicastPkts" },
	{ 4, 0x8c, "RxMulticastPkts" },
	{ 4, 0x90, "RxBroadcastPkts" },
	{ 4, 0x94, "RxSAChanges" },
	{ 4, 0x98, "RxFragments" },
	{ 4, 0xa0, "RxSymbolErrors" },
	{ 4, 0xa4, "RxQoSPkts" },
	{ 8, 0xa8, "RxQoSOctets" },
	{ 4, 0xb0, "Pkts1523to2047Octets" },
	{ 4, 0xb4, "Pkts2048to4095Octets" },
	{ 4, 0xb8, "Pkts4096to8191Octets" },
	{ 4, 0xbc, "Pkts8192to9728Octets" },
	{ 4, 0xc0, "RxDiscarded" },
};

Annotation

Immediate include surface: `linux/delay.h`, `linux/export.h`, `linux/gpio/consumer.h`, `linux/kernel.h`, `linux/math.h`, `linux/minmax.h`, `linux/module.h`, `linux/platform_data/b53.h`.
Detected declarations: `struct b53_mib_desc`, `struct b53_chip_data`, `enum b53_devlink_resource_id`, `function b53_do_vlan_op`, `function b53_set_vlan_entry`, `function b53_get_vlan_entry`, `function b53_set_eap_mode`, `function b53_set_forwarding`, `function b53_enable_vlan`, `function b53_set_jumbo`.
Atlas domain: Driver Families / drivers/net.
Implementation status: integration implementation candidate.
Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.