PCI Capability Access

Access PCI capabilities through GAS. More...

Classes
struct	gas_cap_read_cmd
struct	gas_cap_write_cmd

Functions
int	switchtec_multicast_cap_get (struct switchtec_dev *dev, uint32_t gas_base, struct switchtec_multicast_cap *cap)
	Read the multicast capability registers.
int	switchtec_multicast_cap_set (struct switchtec_dev *dev, uint32_t gas_base, struct switchtec_multicast_set *set)
	Set multicast capability registers.

Detailed Description

Access PCI capabilities through GAS.

These functions provide access to PCI capabilities in the switch's Global Address Space. The multicast capability allows configuring PCIe multicast functionality.

Function Documentation

switchtec_multicast_cap_get()

int switchtec_multicast_cap_get	(	struct switchtec_dev *	dev,
		uint32_t	gas_base,
		struct switchtec_multicast_cap *	cap )

Read the multicast capability registers.

Parameters

[in]	dev	Switchtec device handle
[in]	gas_base	GAS base address of the port
[out]	cap	Multicast capability structure to fill

Returns

0 on success, negative on error

Definition at line 70 of file cap.c.

switchtec_multicast_cap_set()

int switchtec_multicast_cap_set	(	struct switchtec_dev *	dev,
		uint32_t	gas_base,
		struct switchtec_multicast_set *	set )

Set multicast capability registers.

Parameters

[in]	dev	Switchtec device handle
[in]	gas_base	GAS base address of the port
[in]	set	Parameters specifying which fields to set

Returns

0 on success, negative on error

The set structure specifies which fields to modify:

• enable/disable: Set the MC Enable bit
• num_group: Set the number of multicast groups (0-63), -1 to skip
• set_base_addr/base_addr: Set the MC Base Address
• set_receive/receive: Set the MC Receive register
• set_block_all/block_all: Set the MC Block All register
• set_block_untranslated/block_untranslated: Set the MC Block Untranslated register

Definition at line 118 of file cap.c.