--- /dev/null
+/*
+ * 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_VLAN_PRESENT_MASK = 1 << 29,
+ MLX4_CQE_L2_TUNNEL = 1 << 27,
+ MLX4_CQE_L2_TUNNEL_CSUM = 1 << 26,
+ MLX4_CQE_L2_TUNNEL_IPV4 = 1 << 25,
+
+ MLX4_CQE_QPN_MASK = 0xffffff,
+ MLX4_CQE_VID_MASK = 0xfff,
+};
+
+enum {
+ MLX4_CQE_OWNER_MASK = 0x80,
+ MLX4_CQE_IS_SEND_MASK = 0x40,
+ MLX4_CQE_OPCODE_MASK = 0x1f
+};
+
+enum {
+ MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
+ MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
+ MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
+ MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
+ MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
+ MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
+ MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
+ MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
+ MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
+ MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
+ MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
+ MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
+ MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
+};
+
+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,
+};
+
+enum {
+ MLX4_CQE_LLC = 1,
+ MLX4_CQE_SNAP = 1 << 1,
+ MLX4_CQE_BAD_FCS = 1 << 4,
+};
+
+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 & 0xffffff;
+
+ *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 & 0xffffff);
+}
+
+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 */
Code Review / kvmfornfv.git / blobdiff