/* * Copyright (c) 2007 Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * */ #ifndef _MLX4_EN_H_ #define _MLX4_EN_H_ #include #include #include #include #include #include #include #include #include #include #include "en_port.h" #define DRV_NAME "mlx4_en" #define DRV_VERSION "1.4.0" #define DRV_RELDATE "Sep 2008" #define MLX4_EN_MSG_LEVEL (NETIF_MSG_LINK | NETIF_MSG_IFDOWN) #define mlx4_dbg(mlevel, priv, format, arg...) \ if (NETIF_MSG_##mlevel & priv->msg_enable) \ printk(KERN_DEBUG "%s %s: " format , DRV_NAME ,\ (dev_name(&priv->mdev->pdev->dev)) , ## arg) #define mlx4_err(mdev, format, arg...) \ printk(KERN_ERR "%s %s: " format , DRV_NAME ,\ (dev_name(&mdev->pdev->dev)) , ## arg) #define mlx4_info(mdev, format, arg...) \ printk(KERN_INFO "%s %s: " format , DRV_NAME ,\ (dev_name(&mdev->pdev->dev)) , ## arg) #define mlx4_warn(mdev, format, arg...) \ printk(KERN_WARNING "%s %s: " format , DRV_NAME ,\ (dev_name(&mdev->pdev->dev)) , ## arg) /* * Device constants */ #define MLX4_EN_PAGE_SHIFT 12 #define MLX4_EN_PAGE_SIZE (1 << MLX4_EN_PAGE_SHIFT) #define MAX_TX_RINGS 16 #define MAX_RX_RINGS 16 #define MAX_RSS_MAP_SIZE 64 #define RSS_FACTOR 2 #define TXBB_SIZE 64 #define HEADROOM (2048 / TXBB_SIZE + 1) #define MAX_LSO_HDR_SIZE 92 #define STAMP_STRIDE 64 #define STAMP_DWORDS (STAMP_STRIDE / 4) #define STAMP_SHIFT 31 #define STAMP_VAL 0x7fffffff #define STATS_DELAY (HZ / 4) /* Typical TSO descriptor with 16 gather entries is 352 bytes... */ #define MAX_DESC_SIZE 512 #define MAX_DESC_TXBBS (MAX_DESC_SIZE / TXBB_SIZE) /* * OS related constants and tunables */ #define MLX4_EN_WATCHDOG_TIMEOUT (15 * HZ) #define MLX4_EN_ALLOC_ORDER 2 #define MLX4_EN_ALLOC_SIZE (PAGE_SIZE << MLX4_EN_ALLOC_ORDER) #define MLX4_EN_MAX_LRO_DESCRIPTORS 32 /* Receive fragment sizes; we use at most 4 fragments (for 9600 byte MTU * and 4K allocations) */ enum { FRAG_SZ0 = 512 - NET_IP_ALIGN, FRAG_SZ1 = 1024, FRAG_SZ2 = 4096, FRAG_SZ3 = MLX4_EN_ALLOC_SIZE }; #define MLX4_EN_MAX_RX_FRAGS 4 /* Minimum ring size for our page-allocation sceme to work */ #define MLX4_EN_MIN_RX_SIZE (MLX4_EN_ALLOC_SIZE / SMP_CACHE_BYTES) #define MLX4_EN_MIN_TX_SIZE (4096 / TXBB_SIZE) #define MLX4_EN_TX_RING_NUM 9 #define MLX4_EN_DEF_TX_RING_SIZE 1024 #define MLX4_EN_DEF_RX_RING_SIZE 1024 /* Target number of bytes to coalesce with interrupt moderation */ #define MLX4_EN_RX_COAL_TARGET 0x20000 #define MLX4_EN_RX_COAL_TIME 0x10 #define MLX4_EN_TX_COAL_PKTS 5 #define MLX4_EN_TX_COAL_TIME 0x80 #define MLX4_EN_RX_RATE_LOW 400000 #define MLX4_EN_RX_COAL_TIME_LOW 0 #define MLX4_EN_RX_RATE_HIGH 450000 #define MLX4_EN_RX_COAL_TIME_HIGH 128 #define MLX4_EN_RX_SIZE_THRESH 1024 #define MLX4_EN_RX_RATE_THRESH (1000000 / MLX4_EN_RX_COAL_TIME_HIGH) #define MLX4_EN_SAMPLE_INTERVAL 0 #define MLX4_EN_AUTO_CONF 0xffff #define MLX4_EN_DEF_RX_PAUSE 1 #define MLX4_EN_DEF_TX_PAUSE 1 /* Interval between sucessive polls in the Tx routine when polling is used instead of interrupts (in per-core Tx rings) - should be power of 2 */ #define MLX4_EN_TX_POLL_MODER 16 #define MLX4_EN_TX_POLL_TIMEOUT (HZ / 4) #define ETH_LLC_SNAP_SIZE 8 #define SMALL_PACKET_SIZE (256 - NET_IP_ALIGN) #define HEADER_COPY_SIZE (128 - NET_IP_ALIGN) #define MLX4_EN_MIN_MTU 46 #define ETH_BCAST 0xffffffffffffULL #ifdef MLX4_EN_PERF_STAT /* Number of samples to 'average' */ #define AVG_SIZE 128 #define AVG_FACTOR 1024 #define NUM_PERF_STATS NUM_PERF_COUNTERS #define INC_PERF_COUNTER(cnt) (++(cnt)) #define ADD_PERF_COUNTER(cnt, add) ((cnt) += (add)) #define AVG_PERF_COUNTER(cnt, sample) \ ((cnt) = ((cnt) * (AVG_SIZE - 1) + (sample) * AVG_FACTOR) / AVG_SIZE) #define GET_PERF_COUNTER(cnt) (cnt) #define GET_AVG_PERF_COUNTER(cnt) ((cnt) / AVG_FACTOR) #else #define NUM_PERF_STATS 0 #define INC_PERF_COUNTER(cnt) do {} while (0) #define ADD_PERF_COUNTER(cnt, add) do {} while (0) #define AVG_PERF_COUNTER(cnt, sample) do {} while (0) #define GET_PERF_COUNTER(cnt) (0) #define GET_AVG_PERF_COUNTER(cnt) (0) #endif /* MLX4_EN_PERF_STAT */ /* * Configurables */ enum cq_type { RX = 0, TX = 1, }; /* * Useful macros */ #define ROUNDUP_LOG2(x) ilog2(roundup_pow_of_two(x)) #define XNOR(x, y) (!(x) == !(y)) #define ILLEGAL_MAC(addr) (addr == 0xffffffffffffULL || addr == 0x0) struct mlx4_en_tx_info { struct sk_buff *skb; u32 nr_txbb; u8 linear; u8 data_offset; u8 inl; }; #define MLX4_EN_BIT_DESC_OWN 0x80000000 #define CTRL_SIZE sizeof(struct mlx4_wqe_ctrl_seg) #define MLX4_EN_MEMTYPE_PAD 0x100 #define DS_SIZE sizeof(struct mlx4_wqe_data_seg) struct mlx4_en_tx_desc { struct mlx4_wqe_ctrl_seg ctrl; union { struct mlx4_wqe_data_seg data; /* at least one data segment */ struct mlx4_wqe_lso_seg lso; struct mlx4_wqe_inline_seg inl; }; }; #define MLX4_EN_USE_SRQ 0x01000000 struct mlx4_en_rx_alloc { struct page *page; u16 offset; }; struct mlx4_en_tx_ring { struct mlx4_hwq_resources wqres; u32 size ; /* number of TXBBs */ u32 size_mask; u16 stride; u16 cqn; /* index of port CQ associated with this ring */ u32 prod; u32 cons; u32 buf_size; u32 doorbell_qpn; void *buf; u16 poll_cnt; int blocked; struct mlx4_en_tx_info *tx_info; u8 *bounce_buf; u32 last_nr_txbb; struct mlx4_qp qp; struct mlx4_qp_context context; int qpn; enum mlx4_qp_state qp_state; struct mlx4_srq dummy; unsigned long bytes; unsigned long packets; spinlock_t comp_lock; }; struct mlx4_en_rx_desc { struct mlx4_wqe_srq_next_seg next; /* actual number of entries depends on rx ring stride */ struct mlx4_wqe_data_seg data[0]; }; struct mlx4_en_rx_ring { struct mlx4_srq srq; struct mlx4_hwq_resources wqres; struct mlx4_en_rx_alloc page_alloc[MLX4_EN_MAX_RX_FRAGS]; struct net_lro_mgr lro; u32 size ; /* number of Rx descs*/ u32 actual_size; u32 size_mask; u16 stride; u16 log_stride; u16 cqn; /* index of port CQ associated with this ring */ u32 prod; u32 cons; u32 buf_size; int need_refill; int full; void *buf; void *rx_info; unsigned long bytes; unsigned long packets; }; static inline int mlx4_en_can_lro(__be16 status) { return (status & cpu_to_be16(MLX4_CQE_STATUS_IPV4 | MLX4_CQE_STATUS_IPV4F | MLX4_CQE_STATUS_IPV6 | MLX4_CQE_STATUS_IPV4OPT | MLX4_CQE_STATUS_TCP | MLX4_CQE_STATUS_UDP | MLX4_CQE_STATUS_IPOK)) == cpu_to_be16(MLX4_CQE_STATUS_IPV4 | MLX4_CQE_STATUS_IPOK | MLX4_CQE_STATUS_TCP); } struct mlx4_en_cq { struct mlx4_cq mcq; struct mlx4_hwq_resources wqres; int ring; spinlock_t lock; struct net_device *dev; struct napi_struct napi; /* Per-core Tx cq processing support */ struct timer_list timer; int size; int buf_size; unsigned vector; enum cq_type is_tx; u16 moder_time; u16 moder_cnt; struct mlx4_cqe *buf; #define MLX4_EN_OPCODE_ERROR 0x1e }; struct mlx4_en_port_profile { u32 flags; u32 tx_ring_num; u32 rx_ring_num; u32 tx_ring_size; u32 rx_ring_size; u8 rx_pause; u8 rx_ppp; u8 tx_pause; u8 tx_ppp; }; struct mlx4_en_profile { int rss_xor; int num_lro; u8 rss_mask; u32 active_ports; u32 small_pkt_int; u8 no_reset; struct mlx4_en_port_profile prof[MLX4_MAX_PORTS + 1]; }; struct mlx4_en_dev { struct mlx4_dev *dev; struct pci_dev *pdev; struct mutex state_lock; struct net_device *pndev[MLX4_MAX_PORTS + 1]; u32 port_cnt; bool device_up; struct mlx4_en_profile profile; u32 LSO_support; struct workqueue_struct *workqueue; struct device *dma_device; void __iomem *uar_map; struct mlx4_uar priv_uar; struct mlx4_mr mr; u32 priv_pdn; spinlock_t uar_lock; }; struct mlx4_en_rss_map { int size; int base_qpn; u16 map[MAX_RSS_MAP_SIZE]; struct mlx4_qp qps[MAX_RSS_MAP_SIZE]; enum mlx4_qp_state state[MAX_RSS_MAP_SIZE]; struct mlx4_qp indir_qp; enum mlx4_qp_state indir_state; }; struct mlx4_en_rss_context { __be32 base_qpn; __be32 default_qpn; u16 reserved; u8 hash_fn; u8 flags; __be32 rss_key[10]; }; struct mlx4_en_pkt_stats { unsigned long broadcast; unsigned long rx_prio[8]; unsigned long tx_prio[8]; #define NUM_PKT_STATS 17 }; struct mlx4_en_port_stats { unsigned long lro_aggregated; unsigned long lro_flushed; unsigned long lro_no_desc; unsigned long tso_packets; unsigned long queue_stopped; unsigned long wake_queue; unsigned long tx_timeout; unsigned long rx_alloc_failed; unsigned long rx_chksum_good; unsigned long rx_chksum_none; unsigned long tx_chksum_offload; #define NUM_PORT_STATS 11 }; struct mlx4_en_perf_stats { u32 tx_poll; u64 tx_pktsz_avg; u32 inflight_avg; u16 tx_coal_avg; u16 rx_coal_avg; u32 napi_quota; #define NUM_PERF_COUNTERS 6 }; struct mlx4_en_frag_info { u16 frag_size; u16 frag_prefix_size; u16 frag_stride; u16 frag_align; u16 last_offset; }; struct mlx4_en_priv { struct mlx4_en_dev *mdev; struct mlx4_en_port_profile *prof; struct net_device *dev; struct vlan_group *vlgrp; struct net_device_stats stats; struct net_device_stats ret_stats; spinlock_t stats_lock; unsigned long last_moder_packets; unsigned long last_moder_tx_packets; unsigned long last_moder_bytes; unsigned long last_moder_jiffies; int last_moder_time; u16 rx_usecs; u16 rx_frames; u16 tx_usecs; u16 tx_frames; u32 pkt_rate_low; u16 rx_usecs_low; u32 pkt_rate_high; u16 rx_usecs_high; u16 sample_interval; u16 adaptive_rx_coal; u32 msg_enable; struct mlx4_hwq_resources res; int link_state; int last_link_state; bool port_up; int port; int registered; int allocated; int stride; int rx_csum; u64 mac; int mac_index; unsigned max_mtu; int base_qpn; struct mlx4_en_rss_map rss_map; u16 tx_prio_map[8]; u32 flags; #define MLX4_EN_FLAG_PROMISC 0x1 u32 tx_ring_num; u32 rx_ring_num; u32 rx_skb_size; struct mlx4_en_frag_info frag_info[MLX4_EN_MAX_RX_FRAGS]; u16 num_frags; u16 log_rx_info; struct mlx4_en_tx_ring tx_ring[MAX_TX_RINGS]; struct mlx4_en_rx_ring rx_ring[MAX_RX_RINGS]; struct mlx4_en_cq tx_cq[MAX_TX_RINGS]; struct mlx4_en_cq rx_cq[MAX_RX_RINGS]; struct work_struct mcast_task; struct work_struct mac_task; struct delayed_work refill_task; struct work_struct watchdog_task; struct work_struct linkstate_task; struct delayed_work stats_task; struct mlx4_en_perf_stats pstats; struct mlx4_en_pkt_stats pkstats; struct mlx4_en_port_stats port_stats; struct dev_mc_list *mc_list; struct mlx4_en_stat_out_mbox hw_stats; }; void mlx4_en_destroy_netdev(struct net_device *dev); int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, struct mlx4_en_port_profile *prof); int mlx4_en_start_port(struct net_device *dev); void mlx4_en_stop_port(struct net_device *dev); void mlx4_en_free_resources(struct mlx4_en_priv *priv); int mlx4_en_alloc_resources(struct mlx4_en_priv *priv); int mlx4_en_get_profile(struct mlx4_en_dev *mdev); int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq, int entries, int ring, enum cq_type mode); void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq); int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq); void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq); int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq); int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq); void mlx4_en_poll_tx_cq(unsigned long data); void mlx4_en_tx_irq(struct mlx4_cq *mcq); int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev); int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring, u32 size, u16 stride); void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring); int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring, int cq, int srqn); void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring); int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv, struct mlx4_en_rx_ring *ring, u32 size, u16 stride); void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv, struct mlx4_en_rx_ring *ring); int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv); void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv, struct mlx4_en_rx_ring *ring); int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget); int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget); void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride, int is_tx, int rss, int qpn, int cqn, int srqn, struct mlx4_qp_context *context); int mlx4_en_map_buffer(struct mlx4_buf *buf); void mlx4_en_unmap_buffer(struct mlx4_buf *buf); void mlx4_en_calc_rx_buf(struct net_device *dev); void mlx4_en_set_default_rss_map(struct mlx4_en_priv *priv, struct mlx4_en_rss_map *rss_map, int num_entries, int num_rings); void mlx4_en_set_prio_map(struct mlx4_en_priv *priv, u16 *prio_map, u32 ring_num); int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv); void mlx4_en_release_rss_steer(struct mlx4_en_priv *priv); int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring); void mlx4_en_rx_refill(struct work_struct *work); void mlx4_en_rx_irq(struct mlx4_cq *mcq); int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port, u64 mac, u64 clear, u8 mode); int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, u8 port, struct vlan_group *grp); int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu, u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx); int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn, u8 promisc); int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset); /* * Globals */ extern const struct ethtool_ops mlx4_en_ethtool_ops; #endif