299 lines
11 KiB
C
299 lines
11 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 _I40EVF_H_
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#define _I40EVF_H_
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/aer.h>
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#include <linux/netdevice.h>
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#include <linux/vmalloc.h>
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#include <linux/interrupt.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include <linux/ip.h>
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#include <linux/tcp.h>
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#include <linux/sctp.h>
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#include <linux/ipv6.h>
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#include <net/ip6_checksum.h>
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#include <net/udp.h>
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#include "i40e_type.h"
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#include "i40e_virtchnl.h"
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#include "i40e_txrx.h"
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#define DEFAULT_DEBUG_LEVEL_SHIFT 3
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#define PFX "i40evf: "
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#define DPRINTK(nlevel, klevel, fmt, args...) \
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((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
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printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
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__func__ , ## args)))
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/* dummy struct to make common code less painful */
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struct i40e_vsi {
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struct i40evf_adapter *back;
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struct net_device *netdev;
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unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
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u16 seid;
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u16 id;
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unsigned long state;
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int base_vector;
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u16 work_limit;
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/* high bit set means dynamic, use accessor routines to read/write.
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* hardware only supports 2us resolution for the ITR registers.
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* these values always store the USER setting, and must be converted
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* before programming to a register.
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*/
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u16 rx_itr_setting;
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u16 tx_itr_setting;
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};
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/* How many Rx Buffers do we bundle into one write to the hardware ? */
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#define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
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#define I40EVF_DEFAULT_TXD 512
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#define I40EVF_DEFAULT_RXD 512
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#define I40EVF_MAX_TXD 4096
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#define I40EVF_MIN_TXD 64
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#define I40EVF_MAX_RXD 4096
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#define I40EVF_MIN_RXD 64
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#define I40EVF_REQ_DESCRIPTOR_MULTIPLE 32
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/* Supported Rx Buffer Sizes */
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#define I40EVF_RXBUFFER_64 64 /* Used for packet split */
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#define I40EVF_RXBUFFER_128 128 /* Used for packet split */
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#define I40EVF_RXBUFFER_256 256 /* Used for packet split */
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#define I40EVF_RXBUFFER_2048 2048
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#define I40EVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
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#define I40EVF_MAX_AQ_BUF_SIZE 4096
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#define I40EVF_AQ_LEN 32
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#define I40EVF_AQ_MAX_ERR 10 /* times to try before resetting AQ */
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#define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
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#define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i]))
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#define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i]))
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#define I40E_TX_CTXTDESC(R, i) \
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(&(((struct i40e_tx_context_desc *)((R)->desc))[i]))
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#define MAX_RX_QUEUES 8
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#define MAX_TX_QUEUES MAX_RX_QUEUES
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/* MAX_MSIX_Q_VECTORS of these are allocated,
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* but we only use one per queue-specific vector.
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*/
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struct i40e_q_vector {
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struct i40evf_adapter *adapter;
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struct i40e_vsi *vsi;
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struct napi_struct napi;
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unsigned long reg_idx;
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struct i40e_ring_container rx;
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struct i40e_ring_container tx;
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u32 ring_mask;
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u8 num_ringpairs; /* total number of ring pairs in vector */
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int v_idx; /* vector index in list */
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char name[IFNAMSIZ + 9];
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cpumask_var_t affinity_mask;
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};
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/* Helper macros to switch between ints/sec and what the register uses.
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* And yes, it's the same math going both ways. The lowest value
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* supported by all of the i40e hardware is 8.
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*/
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#define EITR_INTS_PER_SEC_TO_REG(_eitr) \
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((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
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#define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
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#define I40EVF_DESC_UNUSED(R) \
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((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
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(R)->next_to_clean - (R)->next_to_use - 1)
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#define I40EVF_RX_DESC_ADV(R, i) \
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(&(((union i40e_adv_rx_desc *)((R).desc))[i]))
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#define I40EVF_TX_DESC_ADV(R, i) \
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(&(((union i40e_adv_tx_desc *)((R).desc))[i]))
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#define I40EVF_TX_CTXTDESC_ADV(R, i) \
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(&(((struct i40e_adv_tx_context_desc *)((R).desc))[i]))
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#define OTHER_VECTOR 1
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#define NONQ_VECS (OTHER_VECTOR)
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#define MAX_MSIX_Q_VECTORS 4
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#define MAX_MSIX_COUNT 5
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#define MIN_MSIX_Q_VECTORS 1
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#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS)
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#define I40EVF_QUEUE_END_OF_LIST 0x7FF
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#define I40EVF_FREE_VECTOR 0x7FFF
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struct i40evf_mac_filter {
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struct list_head list;
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u8 macaddr[ETH_ALEN];
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bool remove; /* filter needs to be removed */
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bool add; /* filter needs to be added */
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};
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struct i40evf_vlan_filter {
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struct list_head list;
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u16 vlan;
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bool remove; /* filter needs to be removed */
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bool add; /* filter needs to be added */
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};
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/* Driver state. The order of these is important! */
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enum i40evf_state_t {
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__I40EVF_STARTUP, /* driver loaded, probe complete */
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__I40EVF_REMOVE, /* driver is being unloaded */
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__I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */
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__I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */
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__I40EVF_INIT_SW, /* got resources, setting up structs */
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__I40EVF_RESETTING, /* in reset */
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/* Below here, watchdog is running */
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__I40EVF_DOWN, /* ready, can be opened */
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__I40EVF_TESTING, /* in ethtool self-test */
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__I40EVF_RUNNING, /* opened, working */
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};
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enum i40evf_critical_section_t {
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__I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */
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};
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/* make common code happy */
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#define __I40E_DOWN __I40EVF_DOWN
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/* board specific private data structure */
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struct i40evf_adapter {
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struct timer_list watchdog_timer;
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struct work_struct reset_task;
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struct work_struct adminq_task;
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struct delayed_work init_task;
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struct i40e_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
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struct list_head vlan_filter_list;
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char misc_vector_name[IFNAMSIZ + 9];
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/* TX */
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struct i40e_ring *tx_rings[I40E_MAX_VSI_QP];
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u32 tx_timeout_count;
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struct list_head mac_filter_list;
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u32 tx_desc_count;
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/* RX */
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struct i40e_ring *rx_rings[I40E_MAX_VSI_QP];
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u64 hw_csum_rx_error;
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u32 rx_desc_count;
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int num_msix_vectors;
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struct msix_entry *msix_entries;
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u32 flags;
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#define I40EVF_FLAG_RX_CSUM_ENABLED (u32)(1)
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#define I40EVF_FLAG_RX_1BUF_CAPABLE (u32)(1 << 1)
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#define I40EVF_FLAG_RX_PS_CAPABLE (u32)(1 << 2)
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#define I40EVF_FLAG_RX_PS_ENABLED (u32)(1 << 3)
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#define I40EVF_FLAG_IN_NETPOLL (u32)(1 << 4)
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#define I40EVF_FLAG_IMIR_ENABLED (u32)(1 << 5)
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#define I40EVF_FLAG_MQ_CAPABLE (u32)(1 << 6)
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#define I40EVF_FLAG_NEED_LINK_UPDATE (u32)(1 << 7)
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#define I40EVF_FLAG_PF_COMMS_FAILED (u32)(1 << 8)
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#define I40EVF_FLAG_RESET_PENDING (u32)(1 << 9)
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#define I40EVF_FLAG_RESET_NEEDED (u32)(1 << 10)
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/* duplcates for common code */
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#define I40E_FLAG_FDIR_ATR_ENABLED 0
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#define I40E_FLAG_DCB_ENABLED 0
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#define I40E_FLAG_IN_NETPOLL I40EVF_FLAG_IN_NETPOLL
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#define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED
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/* flags for admin queue service task */
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u32 aq_required;
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u32 aq_pending;
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#define I40EVF_FLAG_AQ_ENABLE_QUEUES (u32)(1)
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#define I40EVF_FLAG_AQ_DISABLE_QUEUES (u32)(1 << 1)
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#define I40EVF_FLAG_AQ_ADD_MAC_FILTER (u32)(1 << 2)
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#define I40EVF_FLAG_AQ_ADD_VLAN_FILTER (u32)(1 << 3)
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#define I40EVF_FLAG_AQ_DEL_MAC_FILTER (u32)(1 << 4)
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#define I40EVF_FLAG_AQ_DEL_VLAN_FILTER (u32)(1 << 5)
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#define I40EVF_FLAG_AQ_CONFIGURE_QUEUES (u32)(1 << 6)
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#define I40EVF_FLAG_AQ_MAP_VECTORS (u32)(1 << 7)
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#define I40EVF_FLAG_AQ_HANDLE_RESET (u32)(1 << 8)
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/* OS defined structs */
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struct net_device *netdev;
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struct pci_dev *pdev;
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struct net_device_stats net_stats;
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struct i40e_hw hw; /* defined in i40e_type.h */
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enum i40evf_state_t state;
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volatile unsigned long crit_section;
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struct work_struct watchdog_task;
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bool netdev_registered;
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bool link_up;
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enum i40e_virtchnl_ops current_op;
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struct i40e_virtchnl_vf_resource *vf_res; /* incl. all VSIs */
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struct i40e_virtchnl_vsi_resource *vsi_res; /* our LAN VSI */
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u16 msg_enable;
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struct i40e_eth_stats current_stats;
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struct i40e_vsi vsi;
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u32 aq_wait_count;
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};
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/* needed by i40evf_ethtool.c */
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extern char i40evf_driver_name[];
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extern const char i40evf_driver_version[];
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int i40evf_up(struct i40evf_adapter *adapter);
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void i40evf_down(struct i40evf_adapter *adapter);
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void i40evf_reinit_locked(struct i40evf_adapter *adapter);
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void i40evf_reset(struct i40evf_adapter *adapter);
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void i40evf_set_ethtool_ops(struct net_device *netdev);
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void i40evf_update_stats(struct i40evf_adapter *adapter);
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void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter);
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int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter);
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void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask);
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void i40e_napi_add_all(struct i40evf_adapter *adapter);
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void i40e_napi_del_all(struct i40evf_adapter *adapter);
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int i40evf_send_api_ver(struct i40evf_adapter *adapter);
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int i40evf_verify_api_ver(struct i40evf_adapter *adapter);
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int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter);
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int i40evf_get_vf_config(struct i40evf_adapter *adapter);
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void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush);
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void i40evf_configure_queues(struct i40evf_adapter *adapter);
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void i40evf_deconfigure_queues(struct i40evf_adapter *adapter);
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void i40evf_enable_queues(struct i40evf_adapter *adapter);
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void i40evf_disable_queues(struct i40evf_adapter *adapter);
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void i40evf_map_queues(struct i40evf_adapter *adapter);
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void i40evf_add_ether_addrs(struct i40evf_adapter *adapter);
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void i40evf_del_ether_addrs(struct i40evf_adapter *adapter);
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void i40evf_add_vlans(struct i40evf_adapter *adapter);
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void i40evf_del_vlans(struct i40evf_adapter *adapter);
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void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags);
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void i40evf_request_stats(struct i40evf_adapter *adapter);
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void i40evf_request_reset(struct i40evf_adapter *adapter);
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void i40evf_virtchnl_completion(struct i40evf_adapter *adapter,
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enum i40e_virtchnl_ops v_opcode,
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i40e_status v_retval, u8 *msg, u16 msglen);
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#endif /* _I40EVF_H_ */
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