/*
* Copyright ( c ) 2007 Cisco Systems , Inc . 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_CQ_H
#define MLX4_CQ_H
#include <linux/types.h>
#include <uapi/linux/if_ether.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>
struct mlx4_cqe {
__be32 vlan_my_qpn;
__be32 immed_rss_invalid;
__be32 g_mlpath_rqpn;
__be16 sl_vid;
union {
struct {
__be16 rlid;
__be16 status;
u8 ipv6_ext_mask;
u8 badfcs_enc;
};
u8 smac[ETH_ALEN];
};
__be32 byte_cnt;
__be16 wqe_index;
__be16 checksum;
u8 reserved[3 ];
u8 owner_sr_opcode;
};
struct mlx4_err_cqe {
__be32 my_qpn;
u32 reserved1[5 ];
__be16 wqe_index;
u8 vendor_err_syndrome;
u8 syndrome;
u8 reserved2[3 ];
u8 owner_sr_opcode;
};
struct mlx4_ts_cqe {
__be32 vlan_my_qpn;
__be32 immed_rss_invalid;
__be32 g_mlpath_rqpn;
__be32 timestamp_hi;
__be16 status;
u8 ipv6_ext_mask;
u8 badfcs_enc;
__be32 byte_cnt;
__be16 wqe_index;
__be16 checksum;
u8 reserved;
__be16 timestamp_lo;
u8 owner_sr_opcode;
} __packed;
enum {
MLX4_CQE_L2_TUNNEL_IPOK = 1 << 31 ,
MLX4_CQE_CVLAN_PRESENT_MASK = 1 << 29 ,
MLX4_CQE_SVLAN_PRESENT_MASK = 1 << 30 ,
MLX4_CQE_L2_TUNNEL = 1 << 27 ,
MLX4_CQE_L2_TUNNEL_CSUM = 1 << 26 ,
MLX4_CQE_L2_TUNNEL_IPV4 = 1 << 25 ,
MLX4_CQE_QPN_MASK = 0 xffffff,
MLX4_CQE_VID_MASK = 0 xfff,
};
enum {
MLX4_CQE_OWNER_MASK = 0 x80,
MLX4_CQE_IS_SEND_MASK = 0 x40,
MLX4_CQE_OPCODE_MASK = 0 x1f
};
enum {
MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0 x01,
MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0 x02,
MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0 x04,
MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0 x05,
MLX4_CQE_SYNDROME_MW_BIND_ERR = 0 x06,
MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0 x10,
MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0 x11,
MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0 x12,
MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0 x13,
MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0 x14,
MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0 x15,
MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0 x16,
MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0 x22,
};
enum {
MLX4_CQE_STATUS_IPV4 = 1 << 6 ,
MLX4_CQE_STATUS_IPV4F = 1 << 7 ,
MLX4_CQE_STATUS_IPV6 = 1 << 8 ,
MLX4_CQE_STATUS_IPV4OPT = 1 << 9 ,
MLX4_CQE_STATUS_TCP = 1 << 10 ,
MLX4_CQE_STATUS_UDP = 1 << 11 ,
MLX4_CQE_STATUS_IPOK = 1 << 12 ,
};
/* L4_CSUM is logically part of status, but has to checked against badfcs_enc */
enum {
MLX4_CQE_STATUS_L4_CSUM = 1 << 2 ,
};
enum {
MLX4_CQE_LLC = 1 ,
MLX4_CQE_SNAP = 1 << 1 ,
MLX4_CQE_BAD_FCS = 1 << 4 ,
};
#define MLX4_MAX_CQ_PERIOD (BIT(16 ) - 1 )
#define MLX4_MAX_CQ_COUNT (BIT(16 ) - 1 )
static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
void __iomem *uar_page,
spinlock_t *doorbell_lock)
{
__be32 doorbell[2 ];
u32 sn;
u32 ci;
sn = cq->arm_sn & 3 ;
ci = cq->cons_index & 0 xffffff;
*cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
/*
* Make sure that the doorbell record in host memory is
* written before ringing the doorbell via PCI MMIO .
*/
wmb();
doorbell[0 ] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
doorbell[1 ] = cpu_to_be32(ci);
mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
}
static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
{
*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0 xffffff);
}
enum {
MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24 ,
MLX4_CQ_DB_REQ_NOT = 2 << 24
};
int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
u16 count, u16 period);
int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
int entries, struct mlx4_mtt *mtt);
#endif /* MLX4_CQ_H */
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