153 lines
4.4 KiB
C
153 lines
4.4 KiB
C
#ifndef _INTELVF_H
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#define _INTELVF_H
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/** @file
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*
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* Intel 10/100/1000 virtual function network card driver
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include "intel.h"
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/** Intel VF BAR size */
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#define INTELVF_BAR_SIZE ( 16 * 1024 )
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/** Mailbox Control Register */
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#define INTELVF_MBCTRL 0x0c40UL
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#define INTELVF_MBCTRL_REQ 0x00000001UL /**< Request for PF ready */
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#define INTELVF_MBCTRL_ACK 0x00000002UL /**< PF message received */
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#define INTELVF_MBCTRL_VFU 0x00000004UL /**< Buffer taken by VF */
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#define INTELVF_MBCTRL_PFU 0x00000008UL /**< Buffer taken to PF */
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#define INTELVF_MBCTRL_PFSTS 0x00000010UL /**< PF wrote a message */
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#define INTELVF_MBCTRL_PFACK 0x00000020UL /**< PF acknowledged message */
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#define INTELVF_MBCTRL_RSTI 0x00000040UL /**< PF reset in progress */
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#define INTELVF_MBCTRL_RSTD 0x00000080UL /**< PF reset complete */
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/** Mailbox Memory Register Base */
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#define INTELVF_MBMEM 0x0800UL
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/** Reset mailbox message */
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#define INTELVF_MSG_TYPE_RESET 0x00000001UL
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/** Set MAC address mailbox message */
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#define INTELVF_MSG_TYPE_SET_MAC 0x00000002UL
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/** Set MTU mailbox message */
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#define INTELVF_MSG_TYPE_SET_MTU 0x00000005UL
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/** Get queue configuration message */
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#define INTELVF_MSG_TYPE_GET_QUEUES 0x00000009UL
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/** Control ("ping") mailbox message */
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#define INTELVF_MSG_TYPE_CONTROL 0x00000100UL
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/** Message type mask */
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#define INTELVF_MSG_TYPE_MASK 0x0000ffffUL
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/** Message NACK flag */
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#define INTELVF_MSG_NACK 0x40000000UL
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/** Message ACK flag */
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#define INTELVF_MSG_ACK 0x80000000UL
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/** Message is a response */
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#define INTELVF_MSG_RESPONSE ( INTELVF_MSG_ACK | INTELVF_MSG_NACK )
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/** MAC address mailbox message */
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struct intelvf_msg_mac {
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/** Message header */
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uint32_t hdr;
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/** MAC address */
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uint8_t mac[ETH_ALEN];
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/** Alignment padding */
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uint8_t reserved[ (-ETH_ALEN) & 0x3 ];
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} __attribute__ (( packed ));
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/** Version number mailbox message */
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struct intelvf_msg_version {
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/** Message header */
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uint32_t hdr;
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/** API version */
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uint32_t version;
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} __attribute__ (( packed ));
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/** MTU mailbox message */
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struct intelvf_msg_mtu {
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/** Message header */
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uint32_t hdr;
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/** Maximum packet size */
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uint32_t mtu;
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} __attribute__ (( packed ));
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/** Queue configuration mailbox message (API v1.1+ only) */
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struct intelvf_msg_queues {
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/** Message header */
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uint32_t hdr;
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/** Maximum number of transmit queues */
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uint32_t tx;
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/** Maximum number of receive queues */
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uint32_t rx;
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/** VLAN hand-waving thing
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*
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* This is labelled IXGBE_VF_TRANS_VLAN in the Linux driver.
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*
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* A comment in the Linux PF driver describes it as "notify VF
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* of need for VLAN tag stripping, and correct queue". It
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* will be filled with a non-zero value if the PF is enforcing
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* the use of a single VLAN tag. It will also be filled with
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* a non-zero value if the PF is using multiple traffic
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* classes.
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*
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* The Linux VF driver seems to treat this field as being
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* simply the number of traffic classes, and gives it no
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* VLAN-related interpretation.
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*
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* If the PF is enforcing the use of a single VLAN tag for the
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* VF, then the VLAN tag will be transparently inserted in
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* transmitted packets (via the PFVMVIR register) but will
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* still be visible in received packets. The Linux VF driver
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* handles this unexpected VLAN tag by simply ignoring any
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* unrecognised VLAN tags.
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*
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* We choose to strip and ignore the VLAN tag if this field
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* has a non-zero value.
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*/
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uint32_t vlan_thing;
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/** Default queue */
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uint32_t dflt;
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} __attribute__ (( packed ));
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/** Mailbox message */
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union intelvf_msg {
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/** Message header */
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uint32_t hdr;
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/** MAC address message */
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struct intelvf_msg_mac mac;
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/** Version number message */
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struct intelvf_msg_version version;
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/** MTU message */
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struct intelvf_msg_mtu mtu;
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/** Queue configuration message */
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struct intelvf_msg_queues queues;
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/** Raw dwords */
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uint32_t dword[0];
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};
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/** Maximum time to wait for mailbox message
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*
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* This is a policy decision.
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*/
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#define INTELVF_MBOX_MAX_WAIT_MS 500
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extern int intelvf_mbox_msg ( struct intel_nic *intel, union intelvf_msg *msg );
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extern int intelvf_mbox_poll ( struct intel_nic *intel );
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extern int intelvf_mbox_wait ( struct intel_nic *intel );
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extern int intelvf_mbox_reset ( struct intel_nic *intel, uint8_t *hw_addr );
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extern int intelvf_mbox_set_mac ( struct intel_nic *intel,
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const uint8_t *ll_addr );
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extern int intelvf_mbox_set_mtu ( struct intel_nic *intel, size_t mtu );
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#endif /* _INTELVF_H */
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