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[intel] Add support for mailbox used by virtual functions

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Virtual functions use a mailbox to communicate with the physical
function driver: this covers functionality such as obtaining the MAC
address.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-05-16 14:35:13 +01:00
parent 9e2121be0d
commit bb1e1048f6
4 changed files with 414 additions and 0 deletions
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84
src/drivers/net/intelvf.h Normal file
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#ifndef _INTELVF_H
#define _INTELVF_H
/** @file
*
* Intel 10/100/1000 virtual function network card driver
*
*/
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include "intel.h"
/** Intel VF BAR size */
#define INTELVF_BAR_SIZE ( 16 * 1024 )
/** Mailbox Control Register */
#define INTELVF_MBCTRL 0x0c40UL
#define INTELVF_MBCTRL_REQ 0x00000001UL /**< Request for PF ready */
#define INTELVF_MBCTRL_ACK 0x00000002UL /**< PF message received */
#define INTELVF_MBCTRL_VFU 0x00000004UL /**< Buffer taken by VF */
#define INTELVF_MBCTRL_PFU 0x00000008UL /**< Buffer taken to PF */
#define INTELVF_MBCTRL_PFSTS 0x00000010UL /**< PF wrote a message */
#define INTELVF_MBCTRL_PFACK 0x00000020UL /**< PF acknowledged message */
#define INTELVF_MBCTRL_RSTI 0x00000040UL /**< PF reset in progress */
#define INTELVF_MBCTRL_RSTD 0x00000080UL /**< PF reset complete */
/** Mailbox Memory Register Base */
#define INTELVF_MBMEM 0x0800UL
/** Reset mailbox message */
#define INTELVF_MSG_TYPE_RESET 0x00000001UL
/** Set MAC address mailbox message */
#define INTELVF_MSG_TYPE_SET_MAC 0x00000002UL
/** Control ("ping") mailbox message */
#define INTELVF_MSG_TYPE_CONTROL 0x00000100UL
/** Message type mask */
#define INTELVF_MSG_TYPE_MASK 0x0000ffffUL
/** Message NACK flag */
#define INTELVF_MSG_NACK 0x40000000UL
/** Message ACK flag */
#define INTELVF_MSG_ACK 0x80000000UL
/** Message is a response */
#define INTELVF_MSG_RESPONSE ( INTELVF_MSG_ACK | INTELVF_MSG_NACK )
/** MAC address mailbox message */
struct intelvf_msg_mac {
/** Message header */
uint32_t hdr;
/** MAC address */
uint8_t mac[ETH_ALEN];
/** Alignment padding */
uint8_t reserved[ (-ETH_ALEN) & 0x3 ];
} __attribute__ (( packed ));
/** Mailbox message */
union intelvf_msg {
/** Message header */
uint32_t hdr;
/** MAC address message */
struct intelvf_msg_mac mac;
/** Raw dwords */
uint32_t dword[0];
};
/** Maximum time to wait for mailbox message
*
* This is a policy decision.
*/
#define INTELVF_MBOX_MAX_WAIT_MS 500
extern int intelvf_mbox_poll ( struct intel_nic *intel );
extern int intelvf_mbox_wait ( struct intel_nic *intel );
extern int intelvf_mbox_reset ( struct intel_nic *intel, uint8_t *hw_addr );
extern int intelvf_mbox_set_mac ( struct intel_nic *intel,
const uint8_t *ll_addr );
#endif /* _INTELVF_H */