[linux-2.6-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / en.h

/*
 * Copyright (c) 2015, 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.
 */

#include <linux/if_vlan.h>
#include <linux/etherdevice.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/qp.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/vport.h>
#include "wq.h"
#include "transobj.h"
#include "mlx5_core.h"

#define MLX5E_MAX_NUM_TC	8

#define MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE                0x6
#define MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE                0xa
#define MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE                0xd

#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE                0x1
#define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE                0xa
#define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE                0xd

#define MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ                 (64 * 1024)
#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC      0x10
#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS      0x20
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC      0x10
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS      0x20
#define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES                0x80

#define MLX5E_LOG_INDIR_RQT_SIZE       0x7
#define MLX5E_INDIR_RQT_SIZE           BIT(MLX5E_LOG_INDIR_RQT_SIZE)
#define MLX5E_MAX_NUM_CHANNELS         (MLX5E_INDIR_RQT_SIZE >> 1)
#define MLX5E_TX_CQ_POLL_BUDGET        128
#define MLX5E_UPDATE_STATS_INTERVAL    200 /* msecs */
#define MLX5E_SQ_BF_BUDGET             16

static const char vport_strings[][ETH_GSTRING_LEN] = {
	/* vport statistics */
	"rx_packets",
	"rx_bytes",
	"tx_packets",
	"tx_bytes",
	"rx_error_packets",
	"rx_error_bytes",
	"tx_error_packets",
	"tx_error_bytes",
	"rx_unicast_packets",
	"rx_unicast_bytes",
	"tx_unicast_packets",
	"tx_unicast_bytes",
	"rx_multicast_packets",
	"rx_multicast_bytes",
	"tx_multicast_packets",
	"tx_multicast_bytes",
	"rx_broadcast_packets",
	"rx_broadcast_bytes",
	"tx_broadcast_packets",
	"tx_broadcast_bytes",

	/* SW counters */
	"tso_packets",
	"tso_bytes",
	"lro_packets",
	"lro_bytes",
	"rx_csum_good",
	"rx_csum_none",
	"rx_csum_sw",
	"tx_csum_offload",
	"tx_queue_stopped",
	"tx_queue_wake",
	"tx_queue_dropped",
	"rx_wqe_err",
};

struct mlx5e_vport_stats {
	/* HW counters */
	u64 rx_packets;
	u64 rx_bytes;
	u64 tx_packets;
	u64 tx_bytes;
	u64 rx_error_packets;
	u64 rx_error_bytes;
	u64 tx_error_packets;
	u64 tx_error_bytes;
	u64 rx_unicast_packets;
	u64 rx_unicast_bytes;
	u64 tx_unicast_packets;
	u64 tx_unicast_bytes;
	u64 rx_multicast_packets;
	u64 rx_multicast_bytes;
	u64 tx_multicast_packets;
	u64 tx_multicast_bytes;
	u64 rx_broadcast_packets;
	u64 rx_broadcast_bytes;
	u64 tx_broadcast_packets;
	u64 tx_broadcast_bytes;

	/* SW counters */
	u64 tso_packets;
	u64 tso_bytes;
	u64 lro_packets;
	u64 lro_bytes;
	u64 rx_csum_good;
	u64 rx_csum_none;
	u64 rx_csum_sw;
	u64 tx_csum_offload;
	u64 tx_queue_stopped;
	u64 tx_queue_wake;
	u64 tx_queue_dropped;
	u64 rx_wqe_err;

#define NUM_VPORT_COUNTERS     32
};

static const char pport_strings[][ETH_GSTRING_LEN] = {
	/* IEEE802.3 counters */
	"frames_tx",
	"frames_rx",
	"check_seq_err",
	"alignment_err",
	"octets_tx",
	"octets_received",
	"multicast_xmitted",
	"broadcast_xmitted",
	"multicast_rx",
	"broadcast_rx",
	"in_range_len_errors",
	"out_of_range_len",
	"too_long_errors",
	"symbol_err",
	"mac_control_tx",
	"mac_control_rx",
	"unsupported_op_rx",
	"pause_ctrl_rx",
	"pause_ctrl_tx",

	/* RFC2863 counters */
	"in_octets",
	"in_ucast_pkts",
	"in_discards",
	"in_errors",
	"in_unknown_protos",
	"out_octets",
	"out_ucast_pkts",
	"out_discards",
	"out_errors",
	"in_multicast_pkts",
	"in_broadcast_pkts",
	"out_multicast_pkts",
	"out_broadcast_pkts",

	/* RFC2819 counters */
	"drop_events",
	"octets",
	"pkts",
	"broadcast_pkts",
	"multicast_pkts",
	"crc_align_errors",
	"undersize_pkts",
	"oversize_pkts",
	"fragments",
	"jabbers",
	"collisions",
	"p64octets",
	"p65to127octets",
	"p128to255octets",
	"p256to511octets",
	"p512to1023octets",
	"p1024to1518octets",
	"p1519to2047octets",
	"p2048to4095octets",
	"p4096to8191octets",
	"p8192to10239octets",
};

#define NUM_IEEE_802_3_COUNTERS		19
#define NUM_RFC_2863_COUNTERS		13
#define NUM_RFC_2819_COUNTERS		21
#define NUM_PPORT_COUNTERS		(NUM_IEEE_802_3_COUNTERS + \
					 NUM_RFC_2863_COUNTERS + \
					 NUM_RFC_2819_COUNTERS)

struct mlx5e_pport_stats {
	__be64 IEEE_802_3_counters[NUM_IEEE_802_3_COUNTERS];
	__be64 RFC_2863_counters[NUM_RFC_2863_COUNTERS];
	__be64 RFC_2819_counters[NUM_RFC_2819_COUNTERS];
};

static const char rq_stats_strings[][ETH_GSTRING_LEN] = {
	"packets",
	"csum_none",
	"csum_sw",
	"lro_packets",
	"lro_bytes",
	"wqe_err"
};

struct mlx5e_rq_stats {
	u64 packets;
	u64 csum_none;
	u64 csum_sw;
	u64 lro_packets;
	u64 lro_bytes;
	u64 wqe_err;
#define NUM_RQ_STATS 6
};

static const char sq_stats_strings[][ETH_GSTRING_LEN] = {
	"packets",
	"tso_packets",
	"tso_bytes",
	"csum_offload_none",
	"stopped",
	"wake",
	"dropped",
	"nop"
};

struct mlx5e_sq_stats {
	u64 packets;
	u64 tso_packets;
	u64 tso_bytes;
	u64 csum_offload_none;
	u64 stopped;
	u64 wake;
	u64 dropped;
	u64 nop;
#define NUM_SQ_STATS 8
};

struct mlx5e_stats {
	struct mlx5e_vport_stats   vport;
	struct mlx5e_pport_stats   pport;
};

struct mlx5e_params {
	u8  log_sq_size;
	u8  log_rq_size;
	u16 num_channels;
	u8  default_vlan_prio;
	u8  num_tc;
	u16 rx_cq_moderation_usec;
	u16 rx_cq_moderation_pkts;
	u16 tx_cq_moderation_usec;
	u16 tx_cq_moderation_pkts;
	u16 min_rx_wqes;
	bool lro_en;
	u32 lro_wqe_sz;
	u16 tx_max_inline;
	u8  rss_hfunc;
	u8  toeplitz_hash_key[40];
	u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];
};

enum {
	MLX5E_RQ_STATE_POST_WQES_ENABLE,
};

enum cq_flags {
	MLX5E_CQ_HAS_CQES = 1,
};

struct mlx5e_cq {
	/* data path - accessed per cqe */
	struct mlx5_cqwq           wq;
	unsigned long              flags;

	/* data path - accessed per napi poll */
	struct napi_struct        *napi;
	struct mlx5_core_cq        mcq;
	struct mlx5e_channel      *channel;
	struct mlx5e_priv         *priv;

	/* control */
	struct mlx5_wq_ctrl        wq_ctrl;
} ____cacheline_aligned_in_smp;

struct mlx5e_rq {
	/* data path */
	struct mlx5_wq_ll      wq;
	u32                    wqe_sz;
	struct sk_buff       **skb;

	struct device         *pdev;
	struct net_device     *netdev;
	struct mlx5e_rq_stats  stats;
	struct mlx5e_cq        cq;

	unsigned long          state;
	int                    ix;

	/* control */
	struct mlx5_wq_ctrl    wq_ctrl;
	u32                    rqn;
	struct mlx5e_channel  *channel;
	struct mlx5e_priv     *priv;
} ____cacheline_aligned_in_smp;

struct mlx5e_tx_skb_cb {
	u32 num_bytes;
	u8  num_wqebbs;
	u8  num_dma;
};

#define MLX5E_TX_SKB_CB(__skb) ((struct mlx5e_tx_skb_cb *)__skb->cb)

struct mlx5e_sq_dma {
	dma_addr_t addr;
	u32        size;
};

enum {
	MLX5E_SQ_STATE_WAKE_TXQ_ENABLE,
};

struct mlx5e_sq {
	/* data path */

	/* dirtied @completion */
	u16                        cc;
	u32                        dma_fifo_cc;

	/* dirtied @xmit */
	u16                        pc ____cacheline_aligned_in_smp;
	u32                        dma_fifo_pc;
	u16                        bf_offset;
	u16                        prev_cc;
	u8                         bf_budget;
	struct mlx5e_sq_stats      stats;

	struct mlx5e_cq            cq;

	/* pointers to per packet info: write@xmit, read@completion */
	struct sk_buff           **skb;
	struct mlx5e_sq_dma       *dma_fifo;

	/* read only */
	struct mlx5_wq_cyc         wq;
	u32                        dma_fifo_mask;
	void __iomem              *uar_map;
	void __iomem              *uar_bf_map;
	struct netdev_queue       *txq;
	u32                        sqn;
	u16                        bf_buf_size;
	u16                        max_inline;
	u16                        edge;
	struct device             *pdev;
	__be32                     mkey_be;
	unsigned long              state;

	/* control path */
	struct mlx5_wq_ctrl        wq_ctrl;
	struct mlx5_uar            uar;
	struct mlx5e_channel      *channel;
	int                        tc;
} ____cacheline_aligned_in_smp;

static inline bool mlx5e_sq_has_room_for(struct mlx5e_sq *sq, u16 n)
{
	return (((sq->wq.sz_m1 & (sq->cc - sq->pc)) >= n) ||
		(sq->cc  == sq->pc));
}

enum channel_flags {
	MLX5E_CHANNEL_NAPI_SCHED = 1,
};

struct mlx5e_channel {
	/* data path */
	struct mlx5e_rq            rq;
	struct mlx5e_sq            sq[MLX5E_MAX_NUM_TC];
	struct napi_struct         napi;
	struct device             *pdev;
	struct net_device         *netdev;
	__be32                     mkey_be;
	u8                         num_tc;
	unsigned long              flags;
	int                        tc_to_txq_map[MLX5E_MAX_NUM_TC];

	/* control */
	struct mlx5e_priv         *priv;
	int                        ix;
	int                        cpu;
};

enum mlx5e_traffic_types {
	MLX5E_TT_IPV4_TCP,
	MLX5E_TT_IPV6_TCP,
	MLX5E_TT_IPV4_UDP,
	MLX5E_TT_IPV6_UDP,
	MLX5E_TT_IPV4_IPSEC_AH,
	MLX5E_TT_IPV6_IPSEC_AH,
	MLX5E_TT_IPV4_IPSEC_ESP,
	MLX5E_TT_IPV6_IPSEC_ESP,
	MLX5E_TT_IPV4,
	MLX5E_TT_IPV6,
	MLX5E_TT_ANY,
	MLX5E_NUM_TT,
};

enum mlx5e_rqt_ix {
	MLX5E_INDIRECTION_RQT,
	MLX5E_SINGLE_RQ_RQT,
	MLX5E_NUM_RQT,
};

struct mlx5e_eth_addr_info {
	u8  addr[ETH_ALEN + 2];
	u32 tt_vec;
	u32 ft_ix[MLX5E_NUM_TT]; /* flow table index per traffic type */
};

#define MLX5E_ETH_ADDR_HASH_SIZE (1 << BITS_PER_BYTE)

struct mlx5e_eth_addr_db {
	struct hlist_head          netdev_uc[MLX5E_ETH_ADDR_HASH_SIZE];
	struct hlist_head          netdev_mc[MLX5E_ETH_ADDR_HASH_SIZE];
	struct mlx5e_eth_addr_info broadcast;
	struct mlx5e_eth_addr_info allmulti;
	struct mlx5e_eth_addr_info promisc;
	bool                       broadcast_enabled;
	bool                       allmulti_enabled;
	bool                       promisc_enabled;
};

enum {
	MLX5E_STATE_ASYNC_EVENTS_ENABLE,
	MLX5E_STATE_OPENED,
	MLX5E_STATE_DESTROYING,
};

struct mlx5e_vlan_db {
	u32           active_vlans_ft_ix[VLAN_N_VID];
	u32           untagged_rule_ft_ix;
	u32           any_vlan_rule_ft_ix;
	bool          filter_disabled;
};

struct mlx5e_flow_table {
	void *vlan;
	void *main;
};

struct mlx5e_priv {
	/* priv data path fields - start */
	int                        default_vlan_prio;
	struct mlx5e_sq            **txq_to_sq_map;
	/* priv data path fields - end */

	unsigned long              state;
	struct mutex               state_lock; /* Protects Interface state */
	struct mlx5_uar            cq_uar;
	u32                        pdn;
	u32                        tdn;
	struct mlx5_core_mr        mr;
	struct mlx5e_rq            drop_rq;

	struct mlx5e_channel     **channel;
	u32                        tisn[MLX5E_MAX_NUM_TC];
	u32                        rqtn[MLX5E_NUM_RQT];
	u32                        tirn[MLX5E_NUM_TT];

	struct mlx5e_flow_table    ft;
	struct mlx5e_eth_addr_db   eth_addr;
	struct mlx5e_vlan_db       vlan;

	struct mlx5e_params        params;
	spinlock_t                 async_events_spinlock; /* sync hw events */
	struct work_struct         update_carrier_work;
	struct work_struct         set_rx_mode_work;
	struct delayed_work        update_stats_work;

	struct mlx5_core_dev      *mdev;
	struct net_device         *netdev;
	struct mlx5e_stats         stats;
};

#define MLX5E_NET_IP_ALIGN 2

struct mlx5e_tx_wqe {
	struct mlx5_wqe_ctrl_seg ctrl;
	struct mlx5_wqe_eth_seg  eth;
};

struct mlx5e_rx_wqe {
	struct mlx5_wqe_srq_next_seg  next;
	struct mlx5_wqe_data_seg      data;
};

enum mlx5e_link_mode {
	MLX5E_1000BASE_CX_SGMII	 = 0,
	MLX5E_1000BASE_KX	 = 1,
	MLX5E_10GBASE_CX4	 = 2,
	MLX5E_10GBASE_KX4	 = 3,
	MLX5E_10GBASE_KR	 = 4,
	MLX5E_20GBASE_KR2	 = 5,
	MLX5E_40GBASE_CR4	 = 6,
	MLX5E_40GBASE_KR4	 = 7,
	MLX5E_56GBASE_R4	 = 8,
	MLX5E_10GBASE_CR	 = 12,
	MLX5E_10GBASE_SR	 = 13,
	MLX5E_10GBASE_ER	 = 14,
	MLX5E_40GBASE_SR4	 = 15,
	MLX5E_40GBASE_LR4	 = 16,
	MLX5E_100GBASE_CR4	 = 20,
	MLX5E_100GBASE_SR4	 = 21,
	MLX5E_100GBASE_KR4	 = 22,
	MLX5E_100GBASE_LR4	 = 23,
	MLX5E_100BASE_TX	 = 24,
	MLX5E_100BASE_T		 = 25,
	MLX5E_10GBASE_T		 = 26,
	MLX5E_25GBASE_CR	 = 27,
	MLX5E_25GBASE_KR	 = 28,
	MLX5E_25GBASE_SR	 = 29,
	MLX5E_50GBASE_CR2	 = 30,
	MLX5E_50GBASE_KR2	 = 31,
	MLX5E_LINK_MODES_NUMBER,
};

#define MLX5E_PROT_MASK(link_mode) (1 << link_mode)

void mlx5e_send_nop(struct mlx5e_sq *sq, bool notify_hw);
u16 mlx5e_select_queue(struct net_device *dev, struct sk_buff *skb,
		       void *accel_priv, select_queue_fallback_t fallback);
netdev_tx_t mlx5e_xmit(struct sk_buff *skb, struct net_device *dev);

void mlx5e_completion_event(struct mlx5_core_cq *mcq);
void mlx5e_cq_error_event(struct mlx5_core_cq *mcq, enum mlx5_event event);
int mlx5e_napi_poll(struct napi_struct *napi, int budget);
bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq);
bool mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget);
bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq);
struct mlx5_cqe64 *mlx5e_get_cqe(struct mlx5e_cq *cq);

void mlx5e_update_stats(struct mlx5e_priv *priv);

int mlx5e_create_flow_tables(struct mlx5e_priv *priv);
void mlx5e_destroy_flow_tables(struct mlx5e_priv *priv);
void mlx5e_init_eth_addr(struct mlx5e_priv *priv);
void mlx5e_set_rx_mode_work(struct work_struct *work);

int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
			  u16 vid);
int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
			   u16 vid);
void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv);
void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv);

int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix);

int mlx5e_open_locked(struct net_device *netdev);
int mlx5e_close_locked(struct net_device *netdev);

static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq,
				      struct mlx5e_tx_wqe *wqe, int bf_sz)
{
	u16 ofst = MLX5_BF_OFFSET + sq->bf_offset;

	/* ensure wqe is visible to device before updating doorbell record */
	dma_wmb();

	*sq->wq.db = cpu_to_be32(sq->pc);

	/* ensure doorbell record is visible to device before ringing the
	 * doorbell
	 */
	wmb();

	if (bf_sz) {
		__iowrite64_copy(sq->uar_bf_map + ofst, &wqe->ctrl, bf_sz);

		/* flush the write-combining mapped buffer */
		wmb();

	} else {
		mlx5_write64((__be32 *)&wqe->ctrl, sq->uar_map + ofst, NULL);
	}

	sq->bf_offset ^= sq->bf_buf_size;
}

static inline void mlx5e_cq_arm(struct mlx5e_cq *cq)
{
	struct mlx5_core_cq *mcq;

	mcq = &cq->mcq;
	mlx5_cq_arm(mcq, MLX5_CQ_DB_REQ_NOT, mcq->uar->map, NULL, cq->wq.cc);
}

extern const struct ethtool_ops mlx5e_ethtool_ops;
u16 mlx5e_get_max_inline_cap(struct mlx5_core_dev *mdev);
Commit	Line	Data
f62b8bb8 AV	1	/*
	2	* Copyright (c) 2015, Mellanox Technologies. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#include <linux/if_vlan.h>
	34	#include <linux/etherdevice.h>
	35	#include <linux/mlx5/driver.h>
	36	#include <linux/mlx5/qp.h>
	37	#include <linux/mlx5/cq.h>
d18a9470	38	#include <linux/mlx5/vport.h>
f62b8bb8 AV	39	#include "wq.h"
	40	#include "transobj.h"
	41	#include "mlx5_core.h"
	42
	43	#define MLX5E_MAX_NUM_TC 8
	44
e842b100	45	#define MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE 0x6
f62b8bb8 AV	46	#define MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE 0xa
	47	#define MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE 0xd
	48
e842b100	49	#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE 0x1
f62b8bb8 AV	50	#define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE 0xa
	51	#define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE 0xd
	52
d9a40271	53	#define MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ (64 * 1024)
f62b8bb8 AV	54	#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC 0x10
	55	#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS 0x20
	56	#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC 0x10
	57	#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS 0x20
	58	#define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES 0x80
f62b8bb8	59
936896e9 AS	60	#define MLX5E_LOG_INDIR_RQT_SIZE 0x7
	61	#define MLX5E_INDIR_RQT_SIZE BIT(MLX5E_LOG_INDIR_RQT_SIZE)
	62	#define MLX5E_MAX_NUM_CHANNELS (MLX5E_INDIR_RQT_SIZE >> 1)
f62b8bb8 AV	63	#define MLX5E_TX_CQ_POLL_BUDGET 128
f62b8bb8 AV	64	#define MLX5E_UPDATE_STATS_INTERVAL 200 /* msecs */
88a85f99	65	#define MLX5E_SQ_BF_BUDGET 16
f62b8bb8 AV	66
	67	static const char vport_strings[][ETH_GSTRING_LEN] = {
	68	/* vport statistics */
	69	"rx_packets",
	70	"rx_bytes",
	71	"tx_packets",
	72	"tx_bytes",
	73	"rx_error_packets",
	74	"rx_error_bytes",
	75	"tx_error_packets",
	76	"tx_error_bytes",
	77	"rx_unicast_packets",
	78	"rx_unicast_bytes",
	79	"tx_unicast_packets",
	80	"tx_unicast_bytes",
	81	"rx_multicast_packets",
	82	"rx_multicast_bytes",
	83	"tx_multicast_packets",
	84	"tx_multicast_bytes",
	85	"rx_broadcast_packets",
	86	"rx_broadcast_bytes",
	87	"tx_broadcast_packets",
	88	"tx_broadcast_bytes",
	89
	90	/* SW counters */
	91	"tso_packets",
	92	"tso_bytes",
	93	"lro_packets",
	94	"lro_bytes",
	95	"rx_csum_good",
	96	"rx_csum_none",
bbceefce	97	"rx_csum_sw",
f62b8bb8 AV	98	"tx_csum_offload",
	99	"tx_queue_stopped",
	100	"tx_queue_wake",
	101	"tx_queue_dropped",
	102	"rx_wqe_err",
	103	};
	104
	105	struct mlx5e_vport_stats {
	106	/* HW counters */
	107	u64 rx_packets;
	108	u64 rx_bytes;
	109	u64 tx_packets;
	110	u64 tx_bytes;
	111	u64 rx_error_packets;
	112	u64 rx_error_bytes;
	113	u64 tx_error_packets;
	114	u64 tx_error_bytes;
	115	u64 rx_unicast_packets;
	116	u64 rx_unicast_bytes;
	117	u64 tx_unicast_packets;
	118	u64 tx_unicast_bytes;
	119	u64 rx_multicast_packets;
	120	u64 rx_multicast_bytes;
	121	u64 tx_multicast_packets;
	122	u64 tx_multicast_bytes;
	123	u64 rx_broadcast_packets;
	124	u64 rx_broadcast_bytes;
	125	u64 tx_broadcast_packets;
	126	u64 tx_broadcast_bytes;
	127
	128	/* SW counters */
	129	u64 tso_packets;
	130	u64 tso_bytes;
	131	u64 lro_packets;
	132	u64 lro_bytes;
	133	u64 rx_csum_good;
	134	u64 rx_csum_none;
bbceefce	135	u64 rx_csum_sw;
f62b8bb8 AV	136	u64 tx_csum_offload;
	137	u64 tx_queue_stopped;
	138	u64 tx_queue_wake;
	139	u64 tx_queue_dropped;
	140	u64 rx_wqe_err;
	141
bbceefce	142	#define NUM_VPORT_COUNTERS 32
f62b8bb8 AV	143	};
f62b8bb8 AV	144
efea389d GP	145	static const char pport_strings[][ETH_GSTRING_LEN] = {
	146	/* IEEE802.3 counters */
	147	"frames_tx",
	148	"frames_rx",
	149	"check_seq_err",
	150	"alignment_err",
	151	"octets_tx",
	152	"octets_received",
	153	"multicast_xmitted",
	154	"broadcast_xmitted",
	155	"multicast_rx",
	156	"broadcast_rx",
	157	"in_range_len_errors",
	158	"out_of_range_len",
	159	"too_long_errors",
	160	"symbol_err",
	161	"mac_control_tx",
	162	"mac_control_rx",
	163	"unsupported_op_rx",
	164	"pause_ctrl_rx",
	165	"pause_ctrl_tx",
	166
	167	/* RFC2863 counters */
	168	"in_octets",
	169	"in_ucast_pkts",
	170	"in_discards",
	171	"in_errors",
	172	"in_unknown_protos",
	173	"out_octets",
	174	"out_ucast_pkts",
	175	"out_discards",
	176	"out_errors",
	177	"in_multicast_pkts",
	178	"in_broadcast_pkts",
	179	"out_multicast_pkts",
	180	"out_broadcast_pkts",
	181
	182	/* RFC2819 counters */
	183	"drop_events",
	184	"octets",
	185	"pkts",
	186	"broadcast_pkts",
	187	"multicast_pkts",
	188	"crc_align_errors",
	189	"undersize_pkts",
	190	"oversize_pkts",
	191	"fragments",
	192	"jabbers",
	193	"collisions",
	194	"p64octets",
	195	"p65to127octets",
	196	"p128to255octets",
	197	"p256to511octets",
	198	"p512to1023octets",
	199	"p1024to1518octets",
	200	"p1519to2047octets",
	201	"p2048to4095octets",
	202	"p4096to8191octets",
	203	"p8192to10239octets",
	204	};
	205
	206	#define NUM_IEEE_802_3_COUNTERS 19
	207	#define NUM_RFC_2863_COUNTERS 13
	208	#define NUM_RFC_2819_COUNTERS 21
209	#define NUM_PPORT_COUNTERS (NUM_IEEE_802_3_COUNTERS + \
210	NUM_RFC_2863_COUNTERS + \
211	NUM_RFC_2819_COUNTERS)
212
213	struct mlx5e_pport_stats {
214	__be64 IEEE_802_3_counters[NUM_IEEE_802_3_COUNTERS];
215	__be64 RFC_2863_counters[NUM_RFC_2863_COUNTERS];
216	__be64 RFC_2819_counters[NUM_RFC_2819_COUNTERS];
217	};
218
f62b8bb8 AV	219	static const char rq_stats_strings[][ETH_GSTRING_LEN] = {
	220	"packets",
	221	"csum_none",
bbceefce	222	"csum_sw",
f62b8bb8 AV	223	"lro_packets",
	224	"lro_bytes",
	225	"wqe_err"
	226	};
	227
	228	struct mlx5e_rq_stats {
	229	u64 packets;
	230	u64 csum_none;
bbceefce	231	u64 csum_sw;
f62b8bb8 AV	232	u64 lro_packets;
	233	u64 lro_bytes;
	234	u64 wqe_err;
bbceefce	235	#define NUM_RQ_STATS 6
f62b8bb8 AV	236	};
	237
	238	static const char sq_stats_strings[][ETH_GSTRING_LEN] = {
	239	"packets",
	240	"tso_packets",
	241	"tso_bytes",
	242	"csum_offload_none",
	243	"stopped",
	244	"wake",
	245	"dropped",
	246	"nop"
	247	};
	248
	249	struct mlx5e_sq_stats {
	250	u64 packets;
	251	u64 tso_packets;
	252	u64 tso_bytes;
	253	u64 csum_offload_none;
	254	u64 stopped;
	255	u64 wake;
	256	u64 dropped;
	257	u64 nop;
	258	#define NUM_SQ_STATS 8
	259	};
	260
	261	struct mlx5e_stats {
	262	struct mlx5e_vport_stats vport;
efea389d	263	struct mlx5e_pport_stats pport;
f62b8bb8 AV	264	};
	265
	266	struct mlx5e_params {
	267	u8 log_sq_size;
	268	u8 log_rq_size;
	269	u16 num_channels;
	270	u8 default_vlan_prio;
	271	u8 num_tc;
	272	u16 rx_cq_moderation_usec;
	273	u16 rx_cq_moderation_pkts;
	274	u16 tx_cq_moderation_usec;
	275	u16 tx_cq_moderation_pkts;
	276	u16 min_rx_wqes;
f62b8bb8 AV	277	bool lro_en;
f62b8bb8 AV	278	u32 lro_wqe_sz;
58d52291	279	u16 tx_max_inline;
2d75b2bc AS	280	u8 rss_hfunc;
	281	u8 toeplitz_hash_key[40];
	282	u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];
f62b8bb8 AV	283	};
	284
	285	enum {
	286	MLX5E_RQ_STATE_POST_WQES_ENABLE,
	287	};
	288
	289	enum cq_flags {
	290	MLX5E_CQ_HAS_CQES = 1,
	291	};
	292
	293	struct mlx5e_cq {
	294	/* data path - accessed per cqe */
	295	struct mlx5_cqwq wq;
f62b8bb8 AV	296	unsigned long flags;
	297
	298	/* data path - accessed per napi poll */
	299	struct napi_struct *napi;
	300	struct mlx5_core_cq mcq;
	301	struct mlx5e_channel *channel;
50cfa25a	302	struct mlx5e_priv *priv;
f62b8bb8 AV	303
	304	/* control */
	305	struct mlx5_wq_ctrl wq_ctrl;
	306	} ____cacheline_aligned_in_smp;
	307
	308	struct mlx5e_rq {
	309	/* data path */
	310	struct mlx5_wq_ll wq;
	311	u32 wqe_sz;
	312	struct sk_buff **skb;
	313
	314	struct device *pdev;
	315	struct net_device *netdev;
	316	struct mlx5e_rq_stats stats;
	317	struct mlx5e_cq cq;
	318
	319	unsigned long state;
	320	int ix;
	321
	322	/* control */
	323	struct mlx5_wq_ctrl wq_ctrl;
	324	u32 rqn;
	325	struct mlx5e_channel *channel;
50cfa25a	326	struct mlx5e_priv *priv;
f62b8bb8 AV	327	} ____cacheline_aligned_in_smp;
	328
	329	struct mlx5e_tx_skb_cb {
	330	u32 num_bytes;
	331	u8 num_wqebbs;
	332	u8 num_dma;
	333	};
	334
	335	#define MLX5E_TX_SKB_CB(__skb) ((struct mlx5e_tx_skb_cb *)__skb->cb)
	336
	337	struct mlx5e_sq_dma {
	338	dma_addr_t addr;
	339	u32 size;
	340	};
	341
	342	enum {
	343	MLX5E_SQ_STATE_WAKE_TXQ_ENABLE,
	344	};
	345
	346	struct mlx5e_sq {
	347	/* data path */
	348
	349	/* dirtied @completion */
	350	u16 cc;
	351	u32 dma_fifo_cc;
	352
	353	/* dirtied @xmit */
	354	u16 pc ____cacheline_aligned_in_smp;
	355	u32 dma_fifo_pc;
88a85f99 AS	356	u16 bf_offset;
	357	u16 prev_cc;
	358	u8 bf_budget;
f62b8bb8 AV	359	struct mlx5e_sq_stats stats;
	360
	361	struct mlx5e_cq cq;
	362
	363	/* pointers to per packet info: write@xmit, read@completion */
	364	struct sk_buff **skb;
	365	struct mlx5e_sq_dma *dma_fifo;
	366
	367	/* read only */
	368	struct mlx5_wq_cyc wq;
	369	u32 dma_fifo_mask;
	370	void __iomem *uar_map;
88a85f99	371	void __iomem *uar_bf_map;
f62b8bb8 AV	372	struct netdev_queue *txq;
f62b8bb8 AV	373	u32 sqn;
88a85f99	374	u16 bf_buf_size;
12be4b21 SM	375	u16 max_inline;
12be4b21 SM	376	u16 edge;
f62b8bb8 AV	377	struct device *pdev;
	378	__be32 mkey_be;
	379	unsigned long state;
	380
	381	/* control path */
	382	struct mlx5_wq_ctrl wq_ctrl;
	383	struct mlx5_uar uar;
	384	struct mlx5e_channel *channel;
	385	int tc;
	386	} ____cacheline_aligned_in_smp;
	387
	388	static inline bool mlx5e_sq_has_room_for(struct mlx5e_sq *sq, u16 n)
	389	{
	390	return (((sq->wq.sz_m1 & (sq->cc - sq->pc)) >= n) \|\|
	391	(sq->cc == sq->pc));
	392	}
	393
	394	enum channel_flags {
	395	MLX5E_CHANNEL_NAPI_SCHED = 1,
	396	};
	397
	398	struct mlx5e_channel {
	399	/* data path */
	400	struct mlx5e_rq rq;
	401	struct mlx5e_sq sq[MLX5E_MAX_NUM_TC];
	402	struct napi_struct napi;
	403	struct device *pdev;
	404	struct net_device *netdev;
	405	__be32 mkey_be;
	406	u8 num_tc;
	407	unsigned long flags;
03289b88	408	int tc_to_txq_map[MLX5E_MAX_NUM_TC];
f62b8bb8 AV	409
	410	/* control */
	411	struct mlx5e_priv *priv;
	412	int ix;
	413	int cpu;
	414	};
	415
	416	enum mlx5e_traffic_types {
5a6f8aef AS	417	MLX5E_TT_IPV4_TCP,
	418	MLX5E_TT_IPV6_TCP,
	419	MLX5E_TT_IPV4_UDP,
	420	MLX5E_TT_IPV6_UDP,
a741749f AS	421	MLX5E_TT_IPV4_IPSEC_AH,
	422	MLX5E_TT_IPV6_IPSEC_AH,
	423	MLX5E_TT_IPV4_IPSEC_ESP,
	424	MLX5E_TT_IPV6_IPSEC_ESP,
5a6f8aef AS	425	MLX5E_TT_IPV4,
	426	MLX5E_TT_IPV6,
	427	MLX5E_TT_ANY,
	428	MLX5E_NUM_TT,
f62b8bb8 AV	429	};
f62b8bb8 AV	430
4cbeaff5 AS	431	enum mlx5e_rqt_ix {
	432	MLX5E_INDIRECTION_RQT,
	433	MLX5E_SINGLE_RQ_RQT,
	434	MLX5E_NUM_RQT,
f62b8bb8 AV	435	};
	436
	437	struct mlx5e_eth_addr_info {
	438	u8 addr[ETH_ALEN + 2];
	439	u32 tt_vec;
	440	u32 ft_ix[MLX5E_NUM_TT]; /* flow table index per traffic type */
	441	};
	442
	443	#define MLX5E_ETH_ADDR_HASH_SIZE (1 << BITS_PER_BYTE)
	444
	445	struct mlx5e_eth_addr_db {
	446	struct hlist_head netdev_uc[MLX5E_ETH_ADDR_HASH_SIZE];
	447	struct hlist_head netdev_mc[MLX5E_ETH_ADDR_HASH_SIZE];
	448	struct mlx5e_eth_addr_info broadcast;
	449	struct mlx5e_eth_addr_info allmulti;
	450	struct mlx5e_eth_addr_info promisc;
	451	bool broadcast_enabled;
	452	bool allmulti_enabled;
	453	bool promisc_enabled;
	454	};
	455
	456	enum {
	457	MLX5E_STATE_ASYNC_EVENTS_ENABLE,
	458	MLX5E_STATE_OPENED,
9b37b07f	459	MLX5E_STATE_DESTROYING,
f62b8bb8 AV	460	};
	461
	462	struct mlx5e_vlan_db {
f62b8bb8 AV	463	u32 active_vlans_ft_ix[VLAN_N_VID];
	464	u32 untagged_rule_ft_ix;
	465	u32 any_vlan_rule_ft_ix;
	466	bool filter_disabled;
	467	};
	468
	469	struct mlx5e_flow_table {
	470	void *vlan;
	471	void *main;
	472	};
	473
	474	struct mlx5e_priv {
	475	/* priv data path fields - start */
f62b8bb8	476	int default_vlan_prio;
03289b88	477	struct mlx5e_sq **txq_to_sq_map;
f62b8bb8 AV	478	/* priv data path fields - end */
	479
	480	unsigned long state;
	481	struct mutex state_lock; /* Protects Interface state */
	482	struct mlx5_uar cq_uar;
	483	u32 pdn;
3191e05f	484	u32 tdn;
f62b8bb8	485	struct mlx5_core_mr mr;
50cfa25a	486	struct mlx5e_rq drop_rq;
f62b8bb8 AV	487
	488	struct mlx5e_channel **channel;
	489	u32 tisn[MLX5E_MAX_NUM_TC];
4cbeaff5	490	u32 rqtn[MLX5E_NUM_RQT];
f62b8bb8 AV	491	u32 tirn[MLX5E_NUM_TT];
	492
	493	struct mlx5e_flow_table ft;
	494	struct mlx5e_eth_addr_db eth_addr;
	495	struct mlx5e_vlan_db vlan;
	496
	497	struct mlx5e_params params;
	498	spinlock_t async_events_spinlock; /* sync hw events */
	499	struct work_struct update_carrier_work;
	500	struct work_struct set_rx_mode_work;
	501	struct delayed_work update_stats_work;
	502
	503	struct mlx5_core_dev *mdev;
	504	struct net_device *netdev;
	505	struct mlx5e_stats stats;
	506	};
	507
	508	#define MLX5E_NET_IP_ALIGN 2
	509
	510	struct mlx5e_tx_wqe {
	511	struct mlx5_wqe_ctrl_seg ctrl;
	512	struct mlx5_wqe_eth_seg eth;
	513	};
	514
	515	struct mlx5e_rx_wqe {
	516	struct mlx5_wqe_srq_next_seg next;
	517	struct mlx5_wqe_data_seg data;
	518	};
	519
	520	enum mlx5e_link_mode {
	521	MLX5E_1000BASE_CX_SGMII = 0,
	522	MLX5E_1000BASE_KX = 1,
	523	MLX5E_10GBASE_CX4 = 2,
	524	MLX5E_10GBASE_KX4 = 3,
	525	MLX5E_10GBASE_KR = 4,
	526	MLX5E_20GBASE_KR2 = 5,
	527	MLX5E_40GBASE_CR4 = 6,
	528	MLX5E_40GBASE_KR4 = 7,
	529	MLX5E_56GBASE_R4 = 8,
	530	MLX5E_10GBASE_CR = 12,
	531	MLX5E_10GBASE_SR = 13,
	532	MLX5E_10GBASE_ER = 14,
	533	MLX5E_40GBASE_SR4 = 15,
	534	MLX5E_40GBASE_LR4 = 16,
	535	MLX5E_100GBASE_CR4 = 20,
	536	MLX5E_100GBASE_SR4 = 21,
	537	MLX5E_100GBASE_KR4 = 22,
	538	MLX5E_100GBASE_LR4 = 23,
	539	MLX5E_100BASE_TX = 24,
	540	MLX5E_100BASE_T = 25,
	541	MLX5E_10GBASE_T = 26,
	542	MLX5E_25GBASE_CR = 27,
	543	MLX5E_25GBASE_KR = 28,
	544	MLX5E_25GBASE_SR = 29,
	545	MLX5E_50GBASE_CR2 = 30,
	546	MLX5E_50GBASE_KR2 = 31,
	547	MLX5E_LINK_MODES_NUMBER,
	548	};
	549
	550	#define MLX5E_PROT_MASK(link_mode) (1 << link_mode)
	551
12be4b21	552	void mlx5e_send_nop(struct mlx5e_sq *sq, bool notify_hw);
f62b8bb8 AV	553	u16 mlx5e_select_queue(struct net_device dev, struct sk_buff skb,
	554	void *accel_priv, select_queue_fallback_t fallback);
	555	netdev_tx_t mlx5e_xmit(struct sk_buff skb, struct net_device dev);
f62b8bb8 AV	556
	557	void mlx5e_completion_event(struct mlx5_core_cq *mcq);
	558	void mlx5e_cq_error_event(struct mlx5_core_cq *mcq, enum mlx5_event event);
	559	int mlx5e_napi_poll(struct napi_struct *napi, int budget);
	560	bool mlx5e_poll_tx_cq(struct mlx5e_cq *cq);
	561	bool mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget);
	562	bool mlx5e_post_rx_wqes(struct mlx5e_rq *rq);
	563	struct mlx5_cqe64 mlx5e_get_cqe(struct mlx5e_cq cq);
	564
	565	void mlx5e_update_stats(struct mlx5e_priv *priv);
	566
40ab6a6e AS	567	int mlx5e_create_flow_tables(struct mlx5e_priv *priv);
40ab6a6e AS	568	void mlx5e_destroy_flow_tables(struct mlx5e_priv *priv);
f62b8bb8	569	void mlx5e_init_eth_addr(struct mlx5e_priv *priv);
f62b8bb8 AV	570	void mlx5e_set_rx_mode_work(struct work_struct *work);
	571
	572	int mlx5e_vlan_rx_add_vid(struct net_device *dev, __always_unused __be16 proto,
	573	u16 vid);
	574	int mlx5e_vlan_rx_kill_vid(struct net_device *dev, __always_unused __be16 proto,
	575	u16 vid);
	576	void mlx5e_enable_vlan_filter(struct mlx5e_priv *priv);
	577	void mlx5e_disable_vlan_filter(struct mlx5e_priv *priv);
f62b8bb8	578
2d75b2bc AS	579	int mlx5e_redirect_rqt(struct mlx5e_priv *priv, enum mlx5e_rqt_ix rqt_ix);
2d75b2bc AS	580
f62b8bb8 AV	581	int mlx5e_open_locked(struct net_device *netdev);
f62b8bb8 AV	582	int mlx5e_close_locked(struct net_device *netdev);
f62b8bb8 AV	583
f62b8bb8 AV	584	static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq,
88a85f99	585	struct mlx5e_tx_wqe *wqe, int bf_sz)
f62b8bb8	586	{
88a85f99 AS	587	u16 ofst = MLX5_BF_OFFSET + sq->bf_offset;
88a85f99 AS	588
f62b8bb8 AV	589	/* ensure wqe is visible to device before updating doorbell record */
	590	dma_wmb();
	591
	592	*sq->wq.db = cpu_to_be32(sq->pc);
	593
	594	/* ensure doorbell record is visible to device before ringing the
	595	* doorbell
	596	*/
	597	wmb();
	598
88a85f99 AS	599	if (bf_sz) {
	600	__iowrite64_copy(sq->uar_bf_map + ofst, &wqe->ctrl, bf_sz);
	601
	602	/* flush the write-combining mapped buffer */
	603	wmb();
	604
	605	} else {
	606	mlx5_write64((__be32 *)&wqe->ctrl, sq->uar_map + ofst, NULL);
	607	}
f62b8bb8 AV	608
	609	sq->bf_offset ^= sq->bf_buf_size;
	610	}
	611
	612	static inline void mlx5e_cq_arm(struct mlx5e_cq *cq)
	613	{
	614	struct mlx5_core_cq *mcq;
	615
	616	mcq = &cq->mcq;
	617	mlx5_cq_arm(mcq, MLX5_CQ_DB_REQ_NOT, mcq->uar->map, NULL, cq->wq.cc);
	618	}
	619
	620	extern const struct ethtool_ops mlx5e_ethtool_ops;
58d52291	621	u16 mlx5e_get_max_inline_cap(struct mlx5_core_dev *mdev);