411 lines
13 KiB
C
411 lines
13 KiB
C
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/*******************************************************************************
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*
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* Intel Ethernet Controller XL710 Family Linux Virtual Function Driver
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* Copyright(c) 2013 - 2014 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* The full GNU General Public License is included in this distribution in
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* the file called "COPYING".
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*
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* Contact Information:
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* e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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******************************************************************************/
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#ifndef _I40E_VIRTCHNL_H_
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#define _I40E_VIRTCHNL_H_
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#include "i40e_type.h"
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/* Description:
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* This header file describes the VF-PF communication protocol used
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* by the various i40e drivers.
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*
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* Admin queue buffer usage:
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* desc->opcode is always i40e_aqc_opc_send_msg_to_pf
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* flags, retval, datalen, and data addr are all used normally.
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* Firmware copies the cookie fields when sending messages between the PF and
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* VF, but uses all other fields internally. Due to this limitation, we
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* must send all messages as "indirect", i.e. using an external buffer.
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*
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* All the vsi indexes are relative to the VF. Each VF can have maximum of
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* three VSIs. All the queue indexes are relative to the VSI. Each VF can
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* have a maximum of sixteen queues for all of its VSIs.
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*
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* The PF is required to return a status code in v_retval for all messages
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* except RESET_VF, which does not require any response. The return value is of
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* i40e_status_code type, defined in the i40e_type.h.
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*
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* In general, VF driver initialization should roughly follow the order of these
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* opcodes. The VF driver must first validate the API version of the PF driver,
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* then request a reset, then get resources, then configure queues and
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* interrupts. After these operations are complete, the VF driver may start
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* its queues, optionally add MAC and VLAN filters, and process traffic.
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*/
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/* Opcodes for VF-PF communication. These are placed in the v_opcode field
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* of the virtchnl_msg structure.
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*/
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enum i40e_virtchnl_ops {
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/* The PF sends status change events to VFs using
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* the I40E_VIRTCHNL_OP_EVENT opcode.
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* VFs send requests to the PF using the other ops.
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*/
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I40E_VIRTCHNL_OP_UNKNOWN = 0,
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I40E_VIRTCHNL_OP_VERSION = 1, /* must ALWAYS be 1 */
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I40E_VIRTCHNL_OP_RESET_VF = 2,
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I40E_VIRTCHNL_OP_GET_VF_RESOURCES = 3,
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I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE = 4,
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I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE = 5,
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I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES = 6,
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I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP = 7,
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I40E_VIRTCHNL_OP_ENABLE_QUEUES = 8,
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I40E_VIRTCHNL_OP_DISABLE_QUEUES = 9,
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I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS = 10,
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I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS = 11,
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I40E_VIRTCHNL_OP_ADD_VLAN = 12,
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I40E_VIRTCHNL_OP_DEL_VLAN = 13,
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I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE = 14,
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I40E_VIRTCHNL_OP_GET_STATS = 15,
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I40E_VIRTCHNL_OP_FCOE = 16,
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I40E_VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */
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I40E_VIRTCHNL_OP_CONFIG_RSS_KEY = 23,
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I40E_VIRTCHNL_OP_CONFIG_RSS_LUT = 24,
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I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25,
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I40E_VIRTCHNL_OP_SET_RSS_HENA = 26,
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};
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/* Virtual channel message descriptor. This overlays the admin queue
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* descriptor. All other data is passed in external buffers.
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*/
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struct i40e_virtchnl_msg {
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u8 pad[8]; /* AQ flags/opcode/len/retval fields */
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enum i40e_virtchnl_ops v_opcode; /* avoid confusion with desc->opcode */
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i40e_status v_retval; /* ditto for desc->retval */
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u32 vfid; /* used by PF when sending to VF */
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};
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/* Message descriptions and data structures.*/
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/* I40E_VIRTCHNL_OP_VERSION
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* VF posts its version number to the PF. PF responds with its version number
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* in the same format, along with a return code.
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* Reply from PF has its major/minor versions also in param0 and param1.
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* If there is a major version mismatch, then the VF cannot operate.
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* If there is a minor version mismatch, then the VF can operate but should
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* add a warning to the system log.
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*
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* This enum element MUST always be specified as == 1, regardless of other
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* changes in the API. The PF must always respond to this message without
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* error regardless of version mismatch.
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*/
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#define I40E_VIRTCHNL_VERSION_MAJOR 1
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#define I40E_VIRTCHNL_VERSION_MINOR 1
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#define I40E_VIRTCHNL_VERSION_MINOR_NO_VF_CAPS 0
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struct i40e_virtchnl_version_info {
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u32 major;
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u32 minor;
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};
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/* I40E_VIRTCHNL_OP_RESET_VF
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* VF sends this request to PF with no parameters
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* PF does NOT respond! VF driver must delay then poll VFGEN_RSTAT register
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* until reset completion is indicated. The admin queue must be reinitialized
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* after this operation.
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*
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* When reset is complete, PF must ensure that all queues in all VSIs associated
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* with the VF are stopped, all queue configurations in the HMC are set to 0,
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* and all MAC and VLAN filters (except the default MAC address) on all VSIs
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* are cleared.
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*/
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/* I40E_VIRTCHNL_OP_GET_VF_RESOURCES
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* Version 1.0 VF sends this request to PF with no parameters
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* Version 1.1 VF sends this request to PF with u32 bitmap of its capabilities
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* PF responds with an indirect message containing
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* i40e_virtchnl_vf_resource and one or more
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* i40e_virtchnl_vsi_resource structures.
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*/
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struct i40e_virtchnl_vsi_resource {
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u16 vsi_id;
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u16 num_queue_pairs;
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enum i40e_vsi_type vsi_type;
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u16 qset_handle;
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u8 default_mac_addr[ETH_ALEN];
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};
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/* VF offload flags */
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#define I40E_VIRTCHNL_VF_OFFLOAD_L2 0x00000001
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#define I40E_VIRTCHNL_VF_OFFLOAD_IWARP 0x00000002
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#define I40E_VIRTCHNL_VF_OFFLOAD_FCOE 0x00000004
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#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_AQ 0x00000008
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#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_REG 0x00000010
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#define I40E_VIRTCHNL_VF_OFFLOAD_WB_ON_ITR 0x00000020
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#define I40E_VIRTCHNL_VF_OFFLOAD_VLAN 0x00010000
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#define I40E_VIRTCHNL_VF_OFFLOAD_RX_POLLING 0x00020000
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#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2 0x00040000
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#define I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF 0X00080000
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#define I40E_VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00100000
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struct i40e_virtchnl_vf_resource {
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u16 num_vsis;
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u16 num_queue_pairs;
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u16 max_vectors;
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u16 max_mtu;
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u32 vf_offload_flags;
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u32 rss_key_size;
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u32 rss_lut_size;
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struct i40e_virtchnl_vsi_resource vsi_res[1];
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};
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/* I40E_VIRTCHNL_OP_CONFIG_TX_QUEUE
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* VF sends this message to set up parameters for one TX queue.
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* External data buffer contains one instance of i40e_virtchnl_txq_info.
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* PF configures requested queue and returns a status code.
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*/
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/* Tx queue config info */
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struct i40e_virtchnl_txq_info {
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u16 vsi_id;
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u16 queue_id;
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u16 ring_len; /* number of descriptors, multiple of 8 */
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u16 headwb_enabled;
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u64 dma_ring_addr;
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u64 dma_headwb_addr;
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};
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/* I40E_VIRTCHNL_OP_CONFIG_RX_QUEUE
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* VF sends this message to set up parameters for one RX queue.
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* External data buffer contains one instance of i40e_virtchnl_rxq_info.
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* PF configures requested queue and returns a status code.
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*/
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/* Rx queue config info */
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struct i40e_virtchnl_rxq_info {
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u16 vsi_id;
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u16 queue_id;
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u32 ring_len; /* number of descriptors, multiple of 32 */
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u16 hdr_size;
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u16 splithdr_enabled;
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u32 databuffer_size;
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u32 max_pkt_size;
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u64 dma_ring_addr;
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enum i40e_hmc_obj_rx_hsplit_0 rx_split_pos;
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};
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/* I40E_VIRTCHNL_OP_CONFIG_VSI_QUEUES
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* VF sends this message to set parameters for all active TX and RX queues
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* associated with the specified VSI.
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* PF configures queues and returns status.
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* If the number of queues specified is greater than the number of queues
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* associated with the VSI, an error is returned and no queues are configured.
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*/
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struct i40e_virtchnl_queue_pair_info {
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/* NOTE: vsi_id and queue_id should be identical for both queues. */
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struct i40e_virtchnl_txq_info txq;
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struct i40e_virtchnl_rxq_info rxq;
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};
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struct i40e_virtchnl_vsi_queue_config_info {
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u16 vsi_id;
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u16 num_queue_pairs;
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struct i40e_virtchnl_queue_pair_info qpair[1];
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};
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/* I40E_VIRTCHNL_OP_CONFIG_IRQ_MAP
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* VF uses this message to map vectors to queues.
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* The rxq_map and txq_map fields are bitmaps used to indicate which queues
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* are to be associated with the specified vector.
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* The "other" causes are always mapped to vector 0.
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* PF configures interrupt mapping and returns status.
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*/
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struct i40e_virtchnl_vector_map {
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u16 vsi_id;
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u16 vector_id;
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u16 rxq_map;
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u16 txq_map;
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u16 rxitr_idx;
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u16 txitr_idx;
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};
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struct i40e_virtchnl_irq_map_info {
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u16 num_vectors;
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struct i40e_virtchnl_vector_map vecmap[1];
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};
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/* I40E_VIRTCHNL_OP_ENABLE_QUEUES
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* I40E_VIRTCHNL_OP_DISABLE_QUEUES
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* VF sends these message to enable or disable TX/RX queue pairs.
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* The queues fields are bitmaps indicating which queues to act upon.
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* (Currently, we only support 16 queues per VF, but we make the field
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* u32 to allow for expansion.)
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* PF performs requested action and returns status.
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*/
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struct i40e_virtchnl_queue_select {
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u16 vsi_id;
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u16 pad;
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u32 rx_queues;
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u32 tx_queues;
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};
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/* I40E_VIRTCHNL_OP_ADD_ETHER_ADDRESS
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* VF sends this message in order to add one or more unicast or multicast
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* address filters for the specified VSI.
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* PF adds the filters and returns status.
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*/
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/* I40E_VIRTCHNL_OP_DEL_ETHER_ADDRESS
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* VF sends this message in order to remove one or more unicast or multicast
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* filters for the specified VSI.
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* PF removes the filters and returns status.
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*/
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struct i40e_virtchnl_ether_addr {
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u8 addr[ETH_ALEN];
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u8 pad[2];
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};
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struct i40e_virtchnl_ether_addr_list {
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u16 vsi_id;
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u16 num_elements;
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struct i40e_virtchnl_ether_addr list[1];
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};
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/* I40E_VIRTCHNL_OP_ADD_VLAN
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* VF sends this message to add one or more VLAN tag filters for receives.
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* PF adds the filters and returns status.
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* If a port VLAN is configured by the PF, this operation will return an
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* error to the VF.
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*/
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/* I40E_VIRTCHNL_OP_DEL_VLAN
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* VF sends this message to remove one or more VLAN tag filters for receives.
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* PF removes the filters and returns status.
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* If a port VLAN is configured by the PF, this operation will return an
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* error to the VF.
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*/
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struct i40e_virtchnl_vlan_filter_list {
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u16 vsi_id;
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u16 num_elements;
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u16 vlan_id[1];
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};
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/* I40E_VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE
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* VF sends VSI id and flags.
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* PF returns status code in retval.
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* Note: we assume that broadcast accept mode is always enabled.
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*/
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struct i40e_virtchnl_promisc_info {
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u16 vsi_id;
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u16 flags;
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};
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#define I40E_FLAG_VF_UNICAST_PROMISC 0x00000001
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#define I40E_FLAG_VF_MULTICAST_PROMISC 0x00000002
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/* I40E_VIRTCHNL_OP_GET_STATS
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* VF sends this message to request stats for the selected VSI. VF uses
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* the i40e_virtchnl_queue_select struct to specify the VSI. The queue_id
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* field is ignored by the PF.
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*
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* PF replies with struct i40e_eth_stats in an external buffer.
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*/
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/* I40E_VIRTCHNL_OP_CONFIG_RSS_KEY
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* I40E_VIRTCHNL_OP_CONFIG_RSS_LUT
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* VF sends these messages to configure RSS. Only supported if both PF
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|
|
* and VF drivers set the I40E_VIRTCHNL_VF_OFFLOAD_RSS_PF bit during
|
||
|
|
* configuration negotiation. If this is the case, then the RSS fields in
|
||
|
|
* the VF resource struct are valid.
|
||
|
|
* Both the key and LUT are initialized to 0 by the PF, meaning that
|
||
|
|
* RSS is effectively disabled until set up by the VF.
|
||
|
|
*/
|
||
|
|
struct i40e_virtchnl_rss_key {
|
||
|
|
u16 vsi_id;
|
||
|
|
u16 key_len;
|
||
|
|
u8 key[1]; /* RSS hash key, packed bytes */
|
||
|
|
};
|
||
|
|
|
||
|
|
struct i40e_virtchnl_rss_lut {
|
||
|
|
u16 vsi_id;
|
||
|
|
u16 lut_entries;
|
||
|
|
u8 lut[1]; /* RSS lookup table*/
|
||
|
|
};
|
||
|
|
|
||
|
|
/* I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS
|
||
|
|
* I40E_VIRTCHNL_OP_SET_RSS_HENA
|
||
|
|
* VF sends these messages to get and set the hash filter enable bits for RSS.
|
||
|
|
* By default, the PF sets these to all possible traffic types that the
|
||
|
|
* hardware supports. The VF can query this value if it wants to change the
|
||
|
|
* traffic types that are hashed by the hardware.
|
||
|
|
* Traffic types are defined in the i40e_filter_pctype enum in i40e_type.h
|
||
|
|
*/
|
||
|
|
struct i40e_virtchnl_rss_hena {
|
||
|
|
u64 hena;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* I40E_VIRTCHNL_OP_EVENT
|
||
|
|
* PF sends this message to inform the VF driver of events that may affect it.
|
||
|
|
* No direct response is expected from the VF, though it may generate other
|
||
|
|
* messages in response to this one.
|
||
|
|
*/
|
||
|
|
enum i40e_virtchnl_event_codes {
|
||
|
|
I40E_VIRTCHNL_EVENT_UNKNOWN = 0,
|
||
|
|
I40E_VIRTCHNL_EVENT_LINK_CHANGE,
|
||
|
|
I40E_VIRTCHNL_EVENT_RESET_IMPENDING,
|
||
|
|
I40E_VIRTCHNL_EVENT_PF_DRIVER_CLOSE,
|
||
|
|
};
|
||
|
|
#define I40E_PF_EVENT_SEVERITY_INFO 0
|
||
|
|
#define I40E_PF_EVENT_SEVERITY_CERTAIN_DOOM 255
|
||
|
|
|
||
|
|
struct i40e_virtchnl_pf_event {
|
||
|
|
enum i40e_virtchnl_event_codes event;
|
||
|
|
union {
|
||
|
|
struct {
|
||
|
|
enum i40e_aq_link_speed link_speed;
|
||
|
|
bool link_status;
|
||
|
|
} link_event;
|
||
|
|
} event_data;
|
||
|
|
|
||
|
|
int severity;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* VF reset states - these are written into the RSTAT register:
|
||
|
|
* I40E_VFGEN_RSTAT1 on the PF
|
||
|
|
* I40E_VFGEN_RSTAT on the VF
|
||
|
|
* When the PF initiates a reset, it writes 0
|
||
|
|
* When the reset is complete, it writes 1
|
||
|
|
* When the PF detects that the VF has recovered, it writes 2
|
||
|
|
* VF checks this register periodically to determine if a reset has occurred,
|
||
|
|
* then polls it to know when the reset is complete.
|
||
|
|
* If either the PF or VF reads the register while the hardware
|
||
|
|
* is in a reset state, it will return DEADBEEF, which, when masked
|
||
|
|
* will result in 3.
|
||
|
|
*/
|
||
|
|
enum i40e_vfr_states {
|
||
|
|
I40E_VFR_INPROGRESS = 0,
|
||
|
|
I40E_VFR_COMPLETED,
|
||
|
|
I40E_VFR_VFACTIVE,
|
||
|
|
I40E_VFR_UNKNOWN,
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif /* _I40E_VIRTCHNL_H_ */
|