diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40evf/i40evf.h')
| -rw-r--r-- | drivers/net/ethernet/intel/i40evf/i40evf.h | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf.h b/drivers/net/ethernet/intel/i40evf/i40evf.h new file mode 100644 index 000000000000..ff6529b288a1 --- /dev/null +++ b/drivers/net/ethernet/intel/i40evf/i40evf.h @@ -0,0 +1,321 @@ +/******************************************************************************* + * + * Intel Ethernet Controller XL710 Family Linux Virtual Function Driver + * Copyright(c) 2013 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * The full GNU General Public License is included in this distribution in + * the file called "COPYING". + * + * Contact Information: + * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + ******************************************************************************/ + +#ifndef _I40EVF_H_ +#define _I40EVF_H_ + +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/aer.h> +#include <linux/netdevice.h> +#include <linux/vmalloc.h> +#include <linux/interrupt.h> +#include <linux/ethtool.h> +#include <linux/if_vlan.h> +#include <linux/ip.h> +#include <linux/tcp.h> +#include <linux/sctp.h> +#include <linux/ipv6.h> +#include <net/ip6_checksum.h> +#include <net/udp.h> +#include <linux/sctp.h> + + +#include "i40e_type.h" +#include "i40e_virtchnl.h" +#include "i40e_txrx.h" + +#define DEFAULT_DEBUG_LEVEL_SHIFT 3 +#define PFX "i40evf: " +#define DPRINTK(nlevel, klevel, fmt, args...) \ + ((void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \ + printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \ + __func__ , ## args))) + +/* dummy struct to make common code less painful */ +struct i40e_vsi { + struct i40evf_adapter *back; + struct net_device *netdev; + unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; + u16 seid; + u16 id; + unsigned long state; + int base_vector; + u16 work_limit; + /* high bit set means dynamic, use accessor routines to read/write. + * hardware only supports 2us resolution for the ITR registers. + * these values always store the USER setting, and must be converted + * before programming to a register. + */ + u16 rx_itr_setting; + u16 tx_itr_setting; +}; + +/* How many Rx Buffers do we bundle into one write to the hardware ? */ +#define I40EVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ +#define I40EVF_DEFAULT_TXD 512 +#define I40EVF_DEFAULT_RXD 512 +#define I40EVF_MAX_TXD 4096 +#define I40EVF_MIN_TXD 64 +#define I40EVF_MAX_RXD 4096 +#define I40EVF_MIN_RXD 64 +#define I40EVF_REQ_DESCRIPTOR_MULTIPLE 8 + +/* Supported Rx Buffer Sizes */ +#define I40EVF_RXBUFFER_64 64 /* Used for packet split */ +#define I40EVF_RXBUFFER_128 128 /* Used for packet split */ +#define I40EVF_RXBUFFER_256 256 /* Used for packet split */ +#define I40EVF_RXBUFFER_2048 2048 +#define I40EVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */ +#define I40EVF_MAX_AQ_BUF_SIZE 4096 +#define I40EVF_AQ_LEN 32 +#define I40EVF_AQ_MAX_ERR 10 /* times to try before resetting AQ */ + +#define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) + +#define I40E_RX_DESC(R, i) (&(((union i40e_32byte_rx_desc *)((R)->desc))[i])) +#define I40E_TX_DESC(R, i) (&(((struct i40e_tx_desc *)((R)->desc))[i])) +#define I40E_TX_CTXTDESC(R, i) \ + (&(((struct i40e_tx_context_desc *)((R)->desc))[i])) +#define MAX_RX_QUEUES 8 +#define MAX_TX_QUEUES MAX_RX_QUEUES + +/* MAX_MSIX_Q_VECTORS of these are allocated, + * but we only use one per queue-specific vector. + */ +struct i40e_q_vector { + struct i40evf_adapter *adapter; + struct i40e_vsi *vsi; + struct napi_struct napi; + unsigned long reg_idx; + struct i40e_ring_container rx; + struct i40e_ring_container tx; + u32 ring_mask; + u8 num_ringpairs; /* total number of ring pairs in vector */ + int v_idx; /* vector index in list */ + char name[IFNAMSIZ + 9]; + cpumask_var_t affinity_mask; +}; + +/* Helper macros to switch between ints/sec and what the register uses. + * And yes, it's the same math going both ways. The lowest value + * supported by all of the i40e hardware is 8. + */ +#define EITR_INTS_PER_SEC_TO_REG(_eitr) \ + ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8) +#define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG + +#define I40EVF_DESC_UNUSED(R) \ + ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \ + (R)->next_to_clean - (R)->next_to_use - 1) + +#define I40EVF_RX_DESC_ADV(R, i) \ + (&(((union i40e_adv_rx_desc *)((R).desc))[i])) +#define I40EVF_TX_DESC_ADV(R, i) \ + (&(((union i40e_adv_tx_desc *)((R).desc))[i])) +#define I40EVF_TX_CTXTDESC_ADV(R, i) \ + (&(((struct i40e_adv_tx_context_desc *)((R).desc))[i])) + +#define OTHER_VECTOR 1 +#define NONQ_VECS (OTHER_VECTOR) + +#define MAX_MSIX_Q_VECTORS 4 +#define MAX_MSIX_COUNT 5 + +#define MIN_MSIX_Q_VECTORS 1 +#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NONQ_VECS) + +#define I40EVF_QUEUE_END_OF_LIST 0x7FF +#define I40EVF_FREE_VECTOR 0x7FFF +struct i40evf_mac_filter { + struct list_head list; + u8 macaddr[ETH_ALEN]; + bool remove; /* filter needs to be removed */ + bool add; /* filter needs to be added */ +}; + +struct i40evf_vlan_filter { + struct list_head list; + u16 vlan; + bool remove; /* filter needs to be removed */ + bool add; /* filter needs to be added */ +}; + +/* Driver state. The order of these is important! */ +enum i40evf_state_t { + __I40EVF_STARTUP, /* driver loaded, probe complete */ + __I40EVF_FAILED, /* PF communication failed. Fatal. */ + __I40EVF_REMOVE, /* driver is being unloaded */ + __I40EVF_INIT_VERSION_CHECK, /* aq msg sent, awaiting reply */ + __I40EVF_INIT_GET_RESOURCES, /* aq msg sent, awaiting reply */ + __I40EVF_INIT_SW, /* got resources, setting up structs */ + /* Below here, watchdog is running */ + __I40EVF_DOWN, /* ready, can be opened */ + __I40EVF_TESTING, /* in ethtool self-test */ + __I40EVF_RESETTING, /* in reset */ + __I40EVF_RUNNING, /* opened, working */ +}; + +enum i40evf_critical_section_t { + __I40EVF_IN_CRITICAL_TASK, /* cannot be interrupted */ +}; +/* make common code happy */ +#define __I40E_DOWN __I40EVF_DOWN + +/* board specific private data structure */ +struct i40evf_adapter { + struct timer_list watchdog_timer; + struct vlan_group *vlgrp; + struct work_struct reset_task; + struct work_struct adminq_task; + struct delayed_work init_task; + struct i40e_q_vector *q_vector[MAX_MSIX_Q_VECTORS]; + struct list_head vlan_filter_list; + char name[MAX_MSIX_COUNT][IFNAMSIZ + 9]; + + /* Interrupt Throttle Rate */ + u32 itr_setting; + u16 eitr_low; + u16 eitr_high; + + /* TX */ + struct i40e_ring *tx_rings[I40E_MAX_VSI_QP]; + u64 restart_queue; + u64 hw_csum_tx_good; + u64 lsc_int; + u64 hw_tso_ctxt; + u64 hw_tso6_ctxt; + u32 tx_timeout_count; + struct list_head mac_filter_list; +#ifdef DEBUG + bool detect_tx_hung; +#endif /* DEBUG */ + + /* RX */ + struct i40e_ring *rx_rings[I40E_MAX_VSI_QP]; + int txd_count; + int rxd_count; + u64 hw_csum_rx_error; + u64 hw_rx_no_dma_resources; + u64 hw_csum_rx_good; + u64 non_eop_descs; + int num_msix_vectors; + struct msix_entry *msix_entries; + + u64 rx_hdr_split; + + u32 init_state; + volatile unsigned long flags; +#define I40EVF_FLAG_RX_CSUM_ENABLED (u32)(1) +#define I40EVF_FLAG_RX_1BUF_CAPABLE (u32)(1 << 1) +#define I40EVF_FLAG_RX_PS_CAPABLE (u32)(1 << 2) +#define I40EVF_FLAG_RX_PS_ENABLED (u32)(1 << 3) +#define I40EVF_FLAG_IN_NETPOLL (u32)(1 << 4) +#define I40EVF_FLAG_IMIR_ENABLED (u32)(1 << 5) +#define I40EVF_FLAG_MQ_CAPABLE (u32)(1 << 6) +#define I40EVF_FLAG_NEED_LINK_UPDATE (u32)(1 << 7) +/* duplcates for common code */ +#define I40E_FLAG_FDIR_ATR_ENABLED 0 +#define I40E_FLAG_DCB_ENABLED 0 +#define I40E_FLAG_IN_NETPOLL I40EVF_FLAG_IN_NETPOLL +#define I40E_FLAG_RX_CSUM_ENABLED I40EVF_FLAG_RX_CSUM_ENABLED + /* flags for admin queue service task */ + u32 aq_required; + u32 aq_pending; +#define I40EVF_FLAG_AQ_ENABLE_QUEUES (u32)(1) +#define I40EVF_FLAG_AQ_DISABLE_QUEUES (u32)(1 << 1) +#define I40EVF_FLAG_AQ_ADD_MAC_FILTER (u32)(1 << 2) +#define I40EVF_FLAG_AQ_ADD_VLAN_FILTER (u32)(1 << 3) +#define I40EVF_FLAG_AQ_DEL_MAC_FILTER (u32)(1 << 4) +#define I40EVF_FLAG_AQ_DEL_VLAN_FILTER (u32)(1 << 5) +#define I40EVF_FLAG_AQ_CONFIGURE_QUEUES (u32)(1 << 6) +#define I40EVF_FLAG_AQ_MAP_VECTORS (u32)(1 << 7) +#define I40EVF_FLAG_AQ_HANDLE_RESET (u32)(1 << 8) + /* OS defined structs */ + struct net_device *netdev; + struct pci_dev *pdev; + struct net_device_stats net_stats; + + /* structs defined in i40e_vf.h */ + struct i40e_hw hw; + + enum i40evf_state_t state; + volatile unsigned long crit_section; + u64 tx_busy; + + struct work_struct watchdog_task; + bool netdev_registered; + bool dev_closed; + bool link_up; + enum i40e_virtchnl_ops current_op; + struct i40e_virtchnl_vf_resource *vf_res; /* incl. all VSIs */ + struct i40e_virtchnl_vsi_resource *vsi_res; /* our LAN VSI */ + u16 msg_enable; + struct i40e_eth_stats current_stats; + struct i40e_vsi vsi; + u32 aq_wait_count; +}; + +struct i40evf_info { + enum i40e_mac_type mac; + unsigned int flags; +}; + + +/* needed by i40evf_ethtool.c */ +extern char i40evf_driver_name[]; +extern const char i40evf_driver_version[]; + +int i40evf_up(struct i40evf_adapter *adapter); +void i40evf_down(struct i40evf_adapter *adapter); +void i40evf_reinit_locked(struct i40evf_adapter *adapter); +void i40evf_reset(struct i40evf_adapter *adapter); +void i40evf_set_ethtool_ops(struct net_device *netdev); +void i40evf_update_stats(struct i40evf_adapter *adapter); +void i40evf_reset_interrupt_capability(struct i40evf_adapter *adapter); +int i40evf_init_interrupt_scheme(struct i40evf_adapter *adapter); +void i40evf_irq_enable_queues(struct i40evf_adapter *adapter, u32 mask); + +void i40e_napi_add_all(struct i40evf_adapter *adapter); +void i40e_napi_del_all(struct i40evf_adapter *adapter); + +int i40evf_send_api_ver(struct i40evf_adapter *adapter); +int i40evf_verify_api_ver(struct i40evf_adapter *adapter); +int i40evf_send_vf_config_msg(struct i40evf_adapter *adapter); +int i40evf_get_vf_config(struct i40evf_adapter *adapter); +void i40evf_irq_enable(struct i40evf_adapter *adapter, bool flush); +void i40evf_configure_queues(struct i40evf_adapter *adapter); +void i40evf_deconfigure_queues(struct i40evf_adapter *adapter); +void i40evf_enable_queues(struct i40evf_adapter *adapter); +void i40evf_disable_queues(struct i40evf_adapter *adapter); +void i40evf_map_queues(struct i40evf_adapter *adapter); +void i40evf_add_ether_addrs(struct i40evf_adapter *adapter); +void i40evf_del_ether_addrs(struct i40evf_adapter *adapter); +void i40evf_add_vlans(struct i40evf_adapter *adapter); +void i40evf_del_vlans(struct i40evf_adapter *adapter); +void i40evf_set_promiscuous(struct i40evf_adapter *adapter, int flags); +void i40evf_request_stats(struct i40evf_adapter *adapter); +void i40evf_virtchnl_completion(struct i40evf_adapter *adapter, + enum i40e_virtchnl_ops v_opcode, + i40e_status v_retval, u8 *msg, u16 msglen); +#endif /* _I40EVF_H_ */ |