| /******************************************************************************* |
| |
| Intel 82599 Virtual Function driver |
| Copyright(c) 1999 - 2015 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. |
| |
| You should have received a copy of the GNU General Public License along with |
| this program; if not, see <http://www.gnu.org/licenses/>. |
| |
| 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 _IXGBEVF_H_ |
| #define _IXGBEVF_H_ |
| |
| #include <linux/types.h> |
| #include <linux/bitops.h> |
| #include <linux/timer.h> |
| #include <linux/io.h> |
| #include <linux/netdevice.h> |
| #include <linux/if_vlan.h> |
| #include <linux/u64_stats_sync.h> |
| |
| #include "vf.h" |
| |
| #ifdef CONFIG_NET_RX_BUSY_POLL |
| #include <net/busy_poll.h> |
| #define BP_EXTENDED_STATS |
| #endif |
| |
| #define IXGBE_MAX_TXD_PWR 14 |
| #define IXGBE_MAX_DATA_PER_TXD BIT(IXGBE_MAX_TXD_PWR) |
| |
| /* Tx Descriptors needed, worst case */ |
| #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IXGBE_MAX_DATA_PER_TXD) |
| #define DESC_NEEDED (MAX_SKB_FRAGS + 4) |
| |
| /* wrapper around a pointer to a socket buffer, |
| * so a DMA handle can be stored along with the buffer |
| */ |
| struct ixgbevf_tx_buffer { |
| union ixgbe_adv_tx_desc *next_to_watch; |
| unsigned long time_stamp; |
| struct sk_buff *skb; |
| unsigned int bytecount; |
| unsigned short gso_segs; |
| __be16 protocol; |
| DEFINE_DMA_UNMAP_ADDR(dma); |
| DEFINE_DMA_UNMAP_LEN(len); |
| u32 tx_flags; |
| }; |
| |
| struct ixgbevf_rx_buffer { |
| dma_addr_t dma; |
| struct page *page; |
| unsigned int page_offset; |
| }; |
| |
| struct ixgbevf_stats { |
| u64 packets; |
| u64 bytes; |
| #ifdef BP_EXTENDED_STATS |
| u64 yields; |
| u64 misses; |
| u64 cleaned; |
| #endif |
| }; |
| |
| struct ixgbevf_tx_queue_stats { |
| u64 restart_queue; |
| u64 tx_busy; |
| u64 tx_done_old; |
| }; |
| |
| struct ixgbevf_rx_queue_stats { |
| u64 alloc_rx_page_failed; |
| u64 alloc_rx_buff_failed; |
| u64 csum_err; |
| }; |
| |
| enum ixgbevf_ring_state_t { |
| __IXGBEVF_TX_DETECT_HANG, |
| __IXGBEVF_HANG_CHECK_ARMED, |
| }; |
| |
| #define check_for_tx_hang(ring) \ |
| test_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state) |
| #define set_check_for_tx_hang(ring) \ |
| set_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state) |
| #define clear_check_for_tx_hang(ring) \ |
| clear_bit(__IXGBEVF_TX_DETECT_HANG, &(ring)->state) |
| |
| struct ixgbevf_ring { |
| struct ixgbevf_ring *next; |
| struct net_device *netdev; |
| struct device *dev; |
| void *desc; /* descriptor ring memory */ |
| dma_addr_t dma; /* phys. address of descriptor ring */ |
| unsigned int size; /* length in bytes */ |
| u16 count; /* amount of descriptors */ |
| u16 next_to_use; |
| u16 next_to_clean; |
| u16 next_to_alloc; |
| |
| union { |
| struct ixgbevf_tx_buffer *tx_buffer_info; |
| struct ixgbevf_rx_buffer *rx_buffer_info; |
| }; |
| unsigned long state; |
| struct ixgbevf_stats stats; |
| struct u64_stats_sync syncp; |
| union { |
| struct ixgbevf_tx_queue_stats tx_stats; |
| struct ixgbevf_rx_queue_stats rx_stats; |
| }; |
| |
| u64 hw_csum_rx_error; |
| u8 __iomem *tail; |
| struct sk_buff *skb; |
| |
| /* holds the special value that gets the hardware register offset |
| * associated with this ring, which is different for DCB and RSS modes |
| */ |
| u16 reg_idx; |
| int queue_index; /* needed for multiqueue queue management */ |
| }; |
| |
| /* How many Rx Buffers do we bundle into one write to the hardware ? */ |
| #define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */ |
| |
| #define MAX_RX_QUEUES IXGBE_VF_MAX_RX_QUEUES |
| #define MAX_TX_QUEUES IXGBE_VF_MAX_TX_QUEUES |
| #define IXGBEVF_MAX_RSS_QUEUES 2 |
| #define IXGBEVF_82599_RETA_SIZE 128 /* 128 entries */ |
| #define IXGBEVF_X550_VFRETA_SIZE 64 /* 64 entries */ |
| #define IXGBEVF_RSS_HASH_KEY_SIZE 40 |
| #define IXGBEVF_VFRSSRK_REGS 10 /* 10 registers for RSS key */ |
| |
| #define IXGBEVF_DEFAULT_TXD 1024 |
| #define IXGBEVF_DEFAULT_RXD 512 |
| #define IXGBEVF_MAX_TXD 4096 |
| #define IXGBEVF_MIN_TXD 64 |
| #define IXGBEVF_MAX_RXD 4096 |
| #define IXGBEVF_MIN_RXD 64 |
| |
| /* Supported Rx Buffer Sizes */ |
| #define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */ |
| #define IXGBEVF_RXBUFFER_2048 2048 |
| |
| #define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256 |
| #define IXGBEVF_RX_BUFSZ IXGBEVF_RXBUFFER_2048 |
| |
| #define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) |
| |
| #define IXGBE_TX_FLAGS_CSUM (u32)(1) |
| #define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1) |
| #define IXGBE_TX_FLAGS_TSO (u32)(1 << 2) |
| #define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3) |
| #define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000 |
| #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000 |
| #define IXGBE_TX_FLAGS_VLAN_SHIFT 16 |
| |
| struct ixgbevf_ring_container { |
| struct ixgbevf_ring *ring; /* pointer to linked list of rings */ |
| unsigned int total_bytes; /* total bytes processed this int */ |
| unsigned int total_packets; /* total packets processed this int */ |
| u8 count; /* total number of rings in vector */ |
| u8 itr; /* current ITR setting for ring */ |
| }; |
| |
| /* iterator for handling rings in ring container */ |
| #define ixgbevf_for_each_ring(pos, head) \ |
| for (pos = (head).ring; pos != NULL; pos = pos->next) |
| |
| /* MAX_MSIX_Q_VECTORS of these are allocated, |
| * but we only use one per queue-specific vector. |
| */ |
| struct ixgbevf_q_vector { |
| struct ixgbevf_adapter *adapter; |
| /* index of q_vector within array, also used for finding the bit in |
| * EICR and friends that represents the vector for this ring |
| */ |
| u16 v_idx; |
| u16 itr; /* Interrupt throttle rate written to EITR */ |
| struct napi_struct napi; |
| struct ixgbevf_ring_container rx, tx; |
| char name[IFNAMSIZ + 9]; |
| #ifdef CONFIG_NET_RX_BUSY_POLL |
| unsigned int state; |
| #define IXGBEVF_QV_STATE_IDLE 0 |
| #define IXGBEVF_QV_STATE_NAPI 1 /* NAPI owns this QV */ |
| #define IXGBEVF_QV_STATE_POLL 2 /* poll owns this QV */ |
| #define IXGBEVF_QV_STATE_DISABLED 4 /* QV is disabled */ |
| #define IXGBEVF_QV_OWNED (IXGBEVF_QV_STATE_NAPI | IXGBEVF_QV_STATE_POLL) |
| #define IXGBEVF_QV_LOCKED (IXGBEVF_QV_OWNED | IXGBEVF_QV_STATE_DISABLED) |
| #define IXGBEVF_QV_STATE_NAPI_YIELD 8 /* NAPI yielded this QV */ |
| #define IXGBEVF_QV_STATE_POLL_YIELD 16 /* poll yielded this QV */ |
| #define IXGBEVF_QV_YIELD (IXGBEVF_QV_STATE_NAPI_YIELD | \ |
| IXGBEVF_QV_STATE_POLL_YIELD) |
| #define IXGBEVF_QV_USER_PEND (IXGBEVF_QV_STATE_POLL | \ |
| IXGBEVF_QV_STATE_POLL_YIELD) |
| spinlock_t lock; |
| #endif /* CONFIG_NET_RX_BUSY_POLL */ |
| }; |
| |
| #ifdef CONFIG_NET_RX_BUSY_POLL |
| static inline void ixgbevf_qv_init_lock(struct ixgbevf_q_vector *q_vector) |
| { |
| spin_lock_init(&q_vector->lock); |
| q_vector->state = IXGBEVF_QV_STATE_IDLE; |
| } |
| |
| /* called from the device poll routine to get ownership of a q_vector */ |
| static inline bool ixgbevf_qv_lock_napi(struct ixgbevf_q_vector *q_vector) |
| { |
| int rc = true; |
| |
| spin_lock_bh(&q_vector->lock); |
| if (q_vector->state & IXGBEVF_QV_LOCKED) { |
| WARN_ON(q_vector->state & IXGBEVF_QV_STATE_NAPI); |
| q_vector->state |= IXGBEVF_QV_STATE_NAPI_YIELD; |
| rc = false; |
| #ifdef BP_EXTENDED_STATS |
| q_vector->tx.ring->stats.yields++; |
| #endif |
| } else { |
| /* we don't care if someone yielded */ |
| q_vector->state = IXGBEVF_QV_STATE_NAPI; |
| } |
| spin_unlock_bh(&q_vector->lock); |
| return rc; |
| } |
| |
| /* returns true is someone tried to get the qv while napi had it */ |
| static inline bool ixgbevf_qv_unlock_napi(struct ixgbevf_q_vector *q_vector) |
| { |
| int rc = false; |
| |
| spin_lock_bh(&q_vector->lock); |
| WARN_ON(q_vector->state & (IXGBEVF_QV_STATE_POLL | |
| IXGBEVF_QV_STATE_NAPI_YIELD)); |
| |
| if (q_vector->state & IXGBEVF_QV_STATE_POLL_YIELD) |
| rc = true; |
| /* reset state to idle, unless QV is disabled */ |
| q_vector->state &= IXGBEVF_QV_STATE_DISABLED; |
| spin_unlock_bh(&q_vector->lock); |
| return rc; |
| } |
| |
| /* called from ixgbevf_low_latency_poll() */ |
| static inline bool ixgbevf_qv_lock_poll(struct ixgbevf_q_vector *q_vector) |
| { |
| int rc = true; |
| |
| spin_lock_bh(&q_vector->lock); |
| if ((q_vector->state & IXGBEVF_QV_LOCKED)) { |
| q_vector->state |= IXGBEVF_QV_STATE_POLL_YIELD; |
| rc = false; |
| #ifdef BP_EXTENDED_STATS |
| q_vector->rx.ring->stats.yields++; |
| #endif |
| } else { |
| /* preserve yield marks */ |
| q_vector->state |= IXGBEVF_QV_STATE_POLL; |
| } |
| spin_unlock_bh(&q_vector->lock); |
| return rc; |
| } |
| |
| /* returns true if someone tried to get the qv while it was locked */ |
| static inline bool ixgbevf_qv_unlock_poll(struct ixgbevf_q_vector *q_vector) |
| { |
| int rc = false; |
| |
| spin_lock_bh(&q_vector->lock); |
| WARN_ON(q_vector->state & (IXGBEVF_QV_STATE_NAPI)); |
| |
| if (q_vector->state & IXGBEVF_QV_STATE_POLL_YIELD) |
| rc = true; |
| /* reset state to idle, unless QV is disabled */ |
| q_vector->state &= IXGBEVF_QV_STATE_DISABLED; |
| spin_unlock_bh(&q_vector->lock); |
| return rc; |
| } |
| |
| /* true if a socket is polling, even if it did not get the lock */ |
| static inline bool ixgbevf_qv_busy_polling(struct ixgbevf_q_vector *q_vector) |
| { |
| WARN_ON(!(q_vector->state & IXGBEVF_QV_OWNED)); |
| return q_vector->state & IXGBEVF_QV_USER_PEND; |
| } |
| |
| /* false if QV is currently owned */ |
| static inline bool ixgbevf_qv_disable(struct ixgbevf_q_vector *q_vector) |
| { |
| int rc = true; |
| |
| spin_lock_bh(&q_vector->lock); |
| if (q_vector->state & IXGBEVF_QV_OWNED) |
| rc = false; |
| q_vector->state |= IXGBEVF_QV_STATE_DISABLED; |
| spin_unlock_bh(&q_vector->lock); |
| return rc; |
| } |
| |
| #endif /* CONFIG_NET_RX_BUSY_POLL */ |
| |
| /* microsecond values for various ITR rates shifted by 2 to fit itr register |
| * with the first 3 bits reserved 0 |
| */ |
| #define IXGBE_MIN_RSC_ITR 24 |
| #define IXGBE_100K_ITR 40 |
| #define IXGBE_20K_ITR 200 |
| #define IXGBE_12K_ITR 336 |
| |
| /* 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 ixgbe 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 |
| |
| /* ixgbevf_test_staterr - tests bits in Rx descriptor status and error fields */ |
| static inline __le32 ixgbevf_test_staterr(union ixgbe_adv_rx_desc *rx_desc, |
| const u32 stat_err_bits) |
| { |
| return rx_desc->wb.upper.status_error & cpu_to_le32(stat_err_bits); |
| } |
| |
| static inline u16 ixgbevf_desc_unused(struct ixgbevf_ring *ring) |
| { |
| u16 ntc = ring->next_to_clean; |
| u16 ntu = ring->next_to_use; |
| |
| return ((ntc > ntu) ? 0 : ring->count) + ntc - ntu - 1; |
| } |
| |
| static inline void ixgbevf_write_tail(struct ixgbevf_ring *ring, u32 value) |
| { |
| writel(value, ring->tail); |
| } |
| |
| #define IXGBEVF_RX_DESC(R, i) \ |
| (&(((union ixgbe_adv_rx_desc *)((R)->desc))[i])) |
| #define IXGBEVF_TX_DESC(R, i) \ |
| (&(((union ixgbe_adv_tx_desc *)((R)->desc))[i])) |
| #define IXGBEVF_TX_CTXTDESC(R, i) \ |
| (&(((struct ixgbe_adv_tx_context_desc *)((R)->desc))[i])) |
| |
| #define IXGBE_MAX_JUMBO_FRAME_SIZE 9728 /* Maximum Supported Size 9.5KB */ |
| |
| #define OTHER_VECTOR 1 |
| #define NON_Q_VECTORS (OTHER_VECTOR) |
| |
| #define MAX_MSIX_Q_VECTORS 2 |
| |
| #define MIN_MSIX_Q_VECTORS 1 |
| #define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS) |
| |
| /* board specific private data structure */ |
| struct ixgbevf_adapter { |
| /* this field must be first, see ixgbevf_process_skb_fields */ |
| unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)]; |
| |
| struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS]; |
| |
| /* Interrupt Throttle Rate */ |
| u16 rx_itr_setting; |
| u16 tx_itr_setting; |
| |
| /* interrupt masks */ |
| u32 eims_enable_mask; |
| u32 eims_other; |
| |
| /* TX */ |
| int num_tx_queues; |
| struct ixgbevf_ring *tx_ring[MAX_TX_QUEUES]; /* One per active queue */ |
| u64 restart_queue; |
| u32 tx_timeout_count; |
| |
| /* RX */ |
| int num_rx_queues; |
| struct ixgbevf_ring *rx_ring[MAX_TX_QUEUES]; /* One per active queue */ |
| u64 hw_csum_rx_error; |
| u64 hw_rx_no_dma_resources; |
| int num_msix_vectors; |
| u32 alloc_rx_page_failed; |
| u32 alloc_rx_buff_failed; |
| |
| /* Some features need tri-state capability, |
| * thus the additional *_CAPABLE flags. |
| */ |
| u32 flags; |
| #define IXGBEVF_FLAG_RESET_REQUESTED (u32)(1) |
| #define IXGBEVF_FLAG_QUEUE_RESET_REQUESTED (u32)(1 << 2) |
| |
| struct msix_entry *msix_entries; |
| |
| /* OS defined structs */ |
| struct net_device *netdev; |
| struct pci_dev *pdev; |
| |
| /* structs defined in ixgbe_vf.h */ |
| struct ixgbe_hw hw; |
| u16 msg_enable; |
| /* Interrupt Throttle Rate */ |
| u32 eitr_param; |
| |
| struct ixgbevf_hw_stats stats; |
| |
| unsigned long state; |
| u64 tx_busy; |
| unsigned int tx_ring_count; |
| unsigned int rx_ring_count; |
| |
| #ifdef BP_EXTENDED_STATS |
| u64 bp_rx_yields; |
| u64 bp_rx_cleaned; |
| u64 bp_rx_missed; |
| |
| u64 bp_tx_yields; |
| u64 bp_tx_cleaned; |
| u64 bp_tx_missed; |
| #endif |
| |
| u8 __iomem *io_addr; /* Mainly for iounmap use */ |
| u32 link_speed; |
| bool link_up; |
| |
| struct timer_list service_timer; |
| struct work_struct service_task; |
| |
| spinlock_t mbx_lock; |
| unsigned long last_reset; |
| |
| u32 rss_key[IXGBEVF_VFRSSRK_REGS]; |
| u8 rss_indir_tbl[IXGBEVF_X550_VFRETA_SIZE]; |
| }; |
| |
| enum ixbgevf_state_t { |
| __IXGBEVF_TESTING, |
| __IXGBEVF_RESETTING, |
| __IXGBEVF_DOWN, |
| __IXGBEVF_DISABLED, |
| __IXGBEVF_REMOVING, |
| __IXGBEVF_SERVICE_SCHED, |
| __IXGBEVF_SERVICE_INITED, |
| }; |
| |
| enum ixgbevf_boards { |
| board_82599_vf, |
| board_X540_vf, |
| board_X550_vf, |
| board_X550EM_x_vf, |
| }; |
| |
| enum ixgbevf_xcast_modes { |
| IXGBEVF_XCAST_MODE_NONE = 0, |
| IXGBEVF_XCAST_MODE_MULTI, |
| IXGBEVF_XCAST_MODE_ALLMULTI, |
| }; |
| |
| extern const struct ixgbevf_info ixgbevf_82599_vf_info; |
| extern const struct ixgbevf_info ixgbevf_X540_vf_info; |
| extern const struct ixgbevf_info ixgbevf_X550_vf_info; |
| extern const struct ixgbevf_info ixgbevf_X550EM_x_vf_info; |
| extern const struct ixgbe_mbx_operations ixgbevf_mbx_ops; |
| |
| /* needed by ethtool.c */ |
| extern const char ixgbevf_driver_name[]; |
| extern const char ixgbevf_driver_version[]; |
| |
| int ixgbevf_open(struct net_device *netdev); |
| int ixgbevf_close(struct net_device *netdev); |
| void ixgbevf_up(struct ixgbevf_adapter *adapter); |
| void ixgbevf_down(struct ixgbevf_adapter *adapter); |
| void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter); |
| void ixgbevf_reset(struct ixgbevf_adapter *adapter); |
| void ixgbevf_set_ethtool_ops(struct net_device *netdev); |
| int ixgbevf_setup_rx_resources(struct ixgbevf_ring *); |
| int ixgbevf_setup_tx_resources(struct ixgbevf_ring *); |
| void ixgbevf_free_rx_resources(struct ixgbevf_ring *); |
| void ixgbevf_free_tx_resources(struct ixgbevf_ring *); |
| void ixgbevf_update_stats(struct ixgbevf_adapter *adapter); |
| int ethtool_ioctl(struct ifreq *ifr); |
| |
| extern void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector); |
| |
| void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter); |
| void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter); |
| |
| #ifdef DEBUG |
| char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw); |
| #define hw_dbg(hw, format, arg...) \ |
| printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg) |
| #else |
| #define hw_dbg(hw, format, arg...) do {} while (0) |
| #endif |
| |
| #endif /* _IXGBEVF_H_ */ |