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-rw-r--r--drivers/infiniband/hw/qedr/qedr.h642
1 files changed, 642 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
new file mode 100644
index 000000000..db9ef3e1e
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -0,0 +1,642 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016 QLogic Corporation
+ *
+ * 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 __QEDR_H__
+#define __QEDR_H__
+
+#include <linux/pci.h>
+#include <linux/xarray.h>
+#include <rdma/ib_addr.h>
+#include <linux/qed/qed_if.h>
+#include <linux/qed/qed_chain.h>
+#include <linux/qed/qed_rdma_if.h>
+#include <linux/qed/qede_rdma.h>
+#include <linux/qed/roce_common.h>
+#include <linux/completion.h>
+#include "qedr_hsi_rdma.h"
+
+#define QEDR_NODE_DESC "QLogic 579xx RoCE HCA"
+#define DP_NAME(_dev) dev_name(&(_dev)->ibdev.dev)
+#define IS_IWARP(_dev) ((_dev)->rdma_type == QED_RDMA_TYPE_IWARP)
+#define IS_ROCE(_dev) ((_dev)->rdma_type == QED_RDMA_TYPE_ROCE)
+
+#define DP_DEBUG(dev, module, fmt, ...) \
+ pr_debug("(%s) " module ": " fmt, \
+ DP_NAME(dev) ? DP_NAME(dev) : "", ## __VA_ARGS__)
+
+#define QEDR_MSG_INIT "INIT"
+#define QEDR_MSG_MISC "MISC"
+#define QEDR_MSG_CQ " CQ"
+#define QEDR_MSG_MR " MR"
+#define QEDR_MSG_RQ " RQ"
+#define QEDR_MSG_SQ " SQ"
+#define QEDR_MSG_QP " QP"
+#define QEDR_MSG_SRQ " SRQ"
+#define QEDR_MSG_GSI " GSI"
+#define QEDR_MSG_IWARP " IW"
+
+#define QEDR_CQ_MAGIC_NUMBER (0x11223344)
+
+#define FW_PAGE_SIZE (RDMA_RING_PAGE_SIZE)
+#define FW_PAGE_SHIFT (12)
+
+struct qedr_dev;
+
+struct qedr_cnq {
+ struct qedr_dev *dev;
+ struct qed_chain pbl;
+ struct qed_sb_info *sb;
+ char name[32];
+ u64 n_comp;
+ __le16 *hw_cons_ptr;
+ u8 index;
+};
+
+#define QEDR_MAX_SGID 128
+
+struct qedr_device_attr {
+ u32 vendor_id;
+ u32 vendor_part_id;
+ u32 hw_ver;
+ u64 fw_ver;
+ u64 node_guid;
+ u64 sys_image_guid;
+ u8 max_cnq;
+ u8 max_sge;
+ u16 max_inline;
+ u32 max_sqe;
+ u32 max_rqe;
+ u8 max_qp_resp_rd_atomic_resc;
+ u8 max_qp_req_rd_atomic_resc;
+ u64 max_dev_resp_rd_atomic_resc;
+ u32 max_cq;
+ u32 max_qp;
+ u32 max_mr;
+ u64 max_mr_size;
+ u32 max_cqe;
+ u32 max_mw;
+ u32 max_mr_mw_fmr_pbl;
+ u64 max_mr_mw_fmr_size;
+ u32 max_pd;
+ u32 max_ah;
+ u8 max_pkey;
+ u32 max_srq;
+ u32 max_srq_wr;
+ u8 max_srq_sge;
+ u8 max_stats_queues;
+ u32 dev_caps;
+
+ u64 page_size_caps;
+ u8 dev_ack_delay;
+ u32 reserved_lkey;
+ u32 bad_pkey_counter;
+ struct qed_rdma_events events;
+};
+
+#define QEDR_ENET_STATE_BIT (0)
+
+struct qedr_dev {
+ struct ib_device ibdev;
+ struct qed_dev *cdev;
+ struct pci_dev *pdev;
+ struct net_device *ndev;
+
+ enum ib_atomic_cap atomic_cap;
+
+ void *rdma_ctx;
+ struct qedr_device_attr attr;
+
+ const struct qed_rdma_ops *ops;
+ struct qed_int_info int_info;
+
+ struct qed_sb_info *sb_array;
+ struct qedr_cnq *cnq_array;
+ int num_cnq;
+ int sb_start;
+
+ void __iomem *db_addr;
+ u64 db_phys_addr;
+ u32 db_size;
+ u16 dpi;
+
+ union ib_gid *sgid_tbl;
+
+ /* Lock for sgid table */
+ spinlock_t sgid_lock;
+
+ u64 guid;
+
+ u32 dp_module;
+ u8 dp_level;
+ u8 num_hwfns;
+#define QEDR_IS_CMT(dev) ((dev)->num_hwfns > 1)
+ u8 affin_hwfn_idx;
+ u8 gsi_ll2_handle;
+
+ uint wq_multiplier;
+ u8 gsi_ll2_mac_address[ETH_ALEN];
+ int gsi_qp_created;
+ struct qedr_cq *gsi_sqcq;
+ struct qedr_cq *gsi_rqcq;
+ struct qedr_qp *gsi_qp;
+ enum qed_rdma_type rdma_type;
+ struct xarray qps;
+ struct xarray srqs;
+ struct workqueue_struct *iwarp_wq;
+ u16 iwarp_max_mtu;
+
+ unsigned long enet_state;
+
+ u8 user_dpm_enabled;
+};
+
+#define QEDR_MAX_SQ_PBL (0x8000)
+#define QEDR_MAX_SQ_PBL_ENTRIES (0x10000 / sizeof(void *))
+#define QEDR_SQE_ELEMENT_SIZE (sizeof(struct rdma_sq_sge))
+#define QEDR_MAX_SQE_ELEMENTS_PER_SQE (ROCE_REQ_MAX_SINGLE_SQ_WQE_SIZE / \
+ QEDR_SQE_ELEMENT_SIZE)
+#define QEDR_MAX_SQE_ELEMENTS_PER_PAGE ((RDMA_RING_PAGE_SIZE) / \
+ QEDR_SQE_ELEMENT_SIZE)
+#define QEDR_MAX_SQE ((QEDR_MAX_SQ_PBL_ENTRIES) *\
+ (RDMA_RING_PAGE_SIZE) / \
+ (QEDR_SQE_ELEMENT_SIZE) /\
+ (QEDR_MAX_SQE_ELEMENTS_PER_SQE))
+/* RQ */
+#define QEDR_MAX_RQ_PBL (0x2000)
+#define QEDR_MAX_RQ_PBL_ENTRIES (0x10000 / sizeof(void *))
+#define QEDR_RQE_ELEMENT_SIZE (sizeof(struct rdma_rq_sge))
+#define QEDR_MAX_RQE_ELEMENTS_PER_RQE (RDMA_MAX_SGE_PER_RQ_WQE)
+#define QEDR_MAX_RQE_ELEMENTS_PER_PAGE ((RDMA_RING_PAGE_SIZE) / \
+ QEDR_RQE_ELEMENT_SIZE)
+#define QEDR_MAX_RQE ((QEDR_MAX_RQ_PBL_ENTRIES) *\
+ (RDMA_RING_PAGE_SIZE) / \
+ (QEDR_RQE_ELEMENT_SIZE) /\
+ (QEDR_MAX_RQE_ELEMENTS_PER_RQE))
+
+#define QEDR_CQE_SIZE (sizeof(union rdma_cqe))
+#define QEDR_MAX_CQE_PBL_SIZE (512 * 1024)
+#define QEDR_MAX_CQE_PBL_ENTRIES (((QEDR_MAX_CQE_PBL_SIZE) / \
+ sizeof(u64)) - 1)
+#define QEDR_MAX_CQES ((u32)((QEDR_MAX_CQE_PBL_ENTRIES) * \
+ (QED_CHAIN_PAGE_SIZE) / QEDR_CQE_SIZE))
+
+#define QEDR_ROCE_MAX_CNQ_SIZE (0x4000)
+
+#define QEDR_MAX_PORT (1)
+#define QEDR_PORT (1)
+
+#define QEDR_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)
+
+#define QEDR_ROCE_PKEY_MAX 1
+#define QEDR_ROCE_PKEY_TABLE_LEN 1
+#define QEDR_ROCE_PKEY_DEFAULT 0xffff
+
+struct qedr_pbl {
+ struct list_head list_entry;
+ void *va;
+ dma_addr_t pa;
+};
+
+struct qedr_ucontext {
+ struct ib_ucontext ibucontext;
+ struct qedr_dev *dev;
+ struct qedr_pd *pd;
+ void __iomem *dpi_addr;
+ struct rdma_user_mmap_entry *db_mmap_entry;
+ u64 dpi_phys_addr;
+ u32 dpi_size;
+ u16 dpi;
+ bool db_rec;
+ u8 edpm_mode;
+};
+
+union db_prod32 {
+ struct rdma_pwm_val16_data data;
+ u32 raw;
+};
+
+union db_prod64 {
+ struct rdma_pwm_val32_data data;
+ u64 raw;
+};
+
+enum qedr_cq_type {
+ QEDR_CQ_TYPE_GSI,
+ QEDR_CQ_TYPE_KERNEL,
+ QEDR_CQ_TYPE_USER,
+};
+
+struct qedr_pbl_info {
+ u32 num_pbls;
+ u32 num_pbes;
+ u32 pbl_size;
+ u32 pbe_size;
+ bool two_layered;
+};
+
+struct qedr_userq {
+ struct ib_umem *umem;
+ struct qedr_pbl_info pbl_info;
+ struct qedr_pbl *pbl_tbl;
+ u64 buf_addr;
+ size_t buf_len;
+
+ /* doorbell recovery */
+ void __iomem *db_addr;
+ struct qedr_user_db_rec *db_rec_data;
+ struct rdma_user_mmap_entry *db_mmap_entry;
+ void __iomem *db_rec_db2_addr;
+ union db_prod32 db_rec_db2_data;
+};
+
+struct qedr_cq {
+ struct ib_cq ibcq;
+
+ enum qedr_cq_type cq_type;
+ u32 sig;
+
+ u16 icid;
+
+ /* Lock to protect multiplem CQ's */
+ spinlock_t cq_lock;
+ u8 arm_flags;
+ struct qed_chain pbl;
+
+ void __iomem *db_addr;
+ union db_prod64 db;
+
+ u8 pbl_toggle;
+ union rdma_cqe *latest_cqe;
+ union rdma_cqe *toggle_cqe;
+
+ u32 cq_cons;
+
+ struct qedr_userq q;
+ u8 destroyed;
+ u16 cnq_notif;
+};
+
+struct qedr_pd {
+ struct ib_pd ibpd;
+ u32 pd_id;
+ struct qedr_ucontext *uctx;
+};
+
+struct qedr_xrcd {
+ struct ib_xrcd ibxrcd;
+ u16 xrcd_id;
+};
+
+struct qedr_qp_hwq_info {
+ /* WQE Elements */
+ struct qed_chain pbl;
+ u64 p_phys_addr_tbl;
+ u32 max_sges;
+
+ /* WQE */
+ u16 prod;
+ u16 cons;
+ u16 wqe_cons;
+ u16 gsi_cons;
+ u16 max_wr;
+
+ /* DB */
+ void __iomem *db;
+ union db_prod32 db_data;
+
+ void __iomem *iwarp_db2;
+ union db_prod32 iwarp_db2_data;
+};
+
+#define QEDR_INC_SW_IDX(p_info, index) \
+ do { \
+ p_info->index = (p_info->index + 1) & \
+ qed_chain_get_capacity(p_info->pbl) \
+ } while (0)
+
+struct qedr_srq_hwq_info {
+ u32 max_sges;
+ u32 max_wr;
+ struct qed_chain pbl;
+ u64 p_phys_addr_tbl;
+ u32 wqe_prod;
+ u32 sge_prod;
+ u32 wr_prod_cnt;
+ atomic_t wr_cons_cnt;
+ u32 num_elems;
+
+ struct rdma_srq_producers *virt_prod_pair_addr;
+ dma_addr_t phy_prod_pair_addr;
+};
+
+struct qedr_srq {
+ struct ib_srq ibsrq;
+ struct qedr_dev *dev;
+
+ struct qedr_userq usrq;
+ struct qedr_srq_hwq_info hw_srq;
+ struct ib_umem *prod_umem;
+ u16 srq_id;
+ u32 srq_limit;
+ bool is_xrc;
+ /* lock to protect srq recv post */
+ spinlock_t lock;
+};
+
+enum qedr_qp_err_bitmap {
+ QEDR_QP_ERR_SQ_FULL = 1,
+ QEDR_QP_ERR_RQ_FULL = 2,
+ QEDR_QP_ERR_BAD_SR = 4,
+ QEDR_QP_ERR_BAD_RR = 8,
+ QEDR_QP_ERR_SQ_PBL_FULL = 16,
+ QEDR_QP_ERR_RQ_PBL_FULL = 32,
+};
+
+enum qedr_qp_create_type {
+ QEDR_QP_CREATE_NONE,
+ QEDR_QP_CREATE_USER,
+ QEDR_QP_CREATE_KERNEL,
+};
+
+enum qedr_iwarp_cm_flags {
+ QEDR_IWARP_CM_WAIT_FOR_CONNECT = BIT(0),
+ QEDR_IWARP_CM_WAIT_FOR_DISCONNECT = BIT(1),
+};
+
+struct qedr_qp {
+ struct ib_qp ibqp; /* must be first */
+ struct qedr_dev *dev;
+ struct qedr_qp_hwq_info sq;
+ struct qedr_qp_hwq_info rq;
+
+ u32 max_inline_data;
+
+ /* Lock for QP's */
+ spinlock_t q_lock;
+ struct qedr_cq *sq_cq;
+ struct qedr_cq *rq_cq;
+ struct qedr_srq *srq;
+ enum qed_roce_qp_state state;
+ u32 id;
+ struct qedr_pd *pd;
+ enum ib_qp_type qp_type;
+ enum qedr_qp_create_type create_type;
+ struct qed_rdma_qp *qed_qp;
+ u32 qp_id;
+ u16 icid;
+ u16 mtu;
+ int sgid_idx;
+ u32 rq_psn;
+ u32 sq_psn;
+ u32 qkey;
+ u32 dest_qp_num;
+ u8 timeout;
+
+ /* Relevant to qps created from kernel space only (ULPs) */
+ u8 prev_wqe_size;
+ u16 wqe_cons;
+ u32 err_bitmap;
+ bool signaled;
+
+ /* SQ shadow */
+ struct {
+ u64 wr_id;
+ enum ib_wc_opcode opcode;
+ u32 bytes_len;
+ u8 wqe_size;
+ bool signaled;
+ dma_addr_t icrc_mapping;
+ u32 *icrc;
+ struct qedr_mr *mr;
+ } *wqe_wr_id;
+
+ /* RQ shadow */
+ struct {
+ u64 wr_id;
+ struct ib_sge sg_list[RDMA_MAX_SGE_PER_RQ_WQE];
+ u8 wqe_size;
+
+ u8 smac[ETH_ALEN];
+ u16 vlan;
+ int rc;
+ } *rqe_wr_id;
+
+ /* Relevant to qps created from user space only (applications) */
+ struct qedr_userq usq;
+ struct qedr_userq urq;
+
+ /* synchronization objects used with iwarp ep */
+ struct kref refcnt;
+ struct completion iwarp_cm_comp;
+ struct completion qp_rel_comp;
+ unsigned long iwarp_cm_flags; /* enum iwarp_cm_flags */
+};
+
+struct qedr_ah {
+ struct ib_ah ibah;
+ struct rdma_ah_attr attr;
+};
+
+enum qedr_mr_type {
+ QEDR_MR_USER,
+ QEDR_MR_KERNEL,
+ QEDR_MR_DMA,
+ QEDR_MR_FRMR,
+};
+
+struct mr_info {
+ struct qedr_pbl *pbl_table;
+ struct qedr_pbl_info pbl_info;
+ struct list_head free_pbl_list;
+ struct list_head inuse_pbl_list;
+ u32 completed;
+ u32 completed_handled;
+};
+
+struct qedr_mr {
+ struct ib_mr ibmr;
+ struct ib_umem *umem;
+
+ struct qed_rdma_register_tid_in_params hw_mr;
+ enum qedr_mr_type type;
+
+ struct qedr_dev *dev;
+ struct mr_info info;
+
+ u64 *pages;
+ u32 npages;
+};
+
+struct qedr_user_mmap_entry {
+ struct rdma_user_mmap_entry rdma_entry;
+ struct qedr_dev *dev;
+ union {
+ u64 io_address;
+ void *address;
+ };
+ size_t length;
+ u16 dpi;
+ u8 mmap_flag;
+};
+
+#define SET_FIELD2(value, name, flag) ((value) |= ((flag) << (name ## _SHIFT)))
+
+#define QEDR_RESP_IMM (RDMA_CQE_RESPONDER_IMM_FLG_MASK << \
+ RDMA_CQE_RESPONDER_IMM_FLG_SHIFT)
+#define QEDR_RESP_RDMA (RDMA_CQE_RESPONDER_RDMA_FLG_MASK << \
+ RDMA_CQE_RESPONDER_RDMA_FLG_SHIFT)
+#define QEDR_RESP_INV (RDMA_CQE_RESPONDER_INV_FLG_MASK << \
+ RDMA_CQE_RESPONDER_INV_FLG_SHIFT)
+
+static inline void qedr_inc_sw_cons(struct qedr_qp_hwq_info *info)
+{
+ info->cons = (info->cons + 1) % info->max_wr;
+ info->wqe_cons++;
+}
+
+static inline void qedr_inc_sw_prod(struct qedr_qp_hwq_info *info)
+{
+ info->prod = (info->prod + 1) % info->max_wr;
+}
+
+static inline int qedr_get_dmac(struct qedr_dev *dev,
+ struct rdma_ah_attr *ah_attr, u8 *mac_addr)
+{
+ union ib_gid zero_sgid = { { 0 } };
+ struct in6_addr in6;
+ const struct ib_global_route *grh = rdma_ah_read_grh(ah_attr);
+ u8 *dmac;
+
+ if (!memcmp(&grh->dgid, &zero_sgid, sizeof(union ib_gid))) {
+ DP_ERR(dev, "Local port GID not supported\n");
+ eth_zero_addr(mac_addr);
+ return -EINVAL;
+ }
+
+ memcpy(&in6, grh->dgid.raw, sizeof(in6));
+ dmac = rdma_ah_retrieve_dmac(ah_attr);
+ if (!dmac)
+ return -EINVAL;
+ ether_addr_copy(mac_addr, dmac);
+
+ return 0;
+}
+
+struct qedr_iw_listener {
+ struct qedr_dev *dev;
+ struct iw_cm_id *cm_id;
+ int backlog;
+ void *qed_handle;
+};
+
+struct qedr_iw_ep {
+ struct qedr_dev *dev;
+ struct iw_cm_id *cm_id;
+ struct qedr_qp *qp;
+ void *qed_context;
+ struct kref refcnt;
+};
+
+static inline
+struct qedr_ucontext *get_qedr_ucontext(struct ib_ucontext *ibucontext)
+{
+ return container_of(ibucontext, struct qedr_ucontext, ibucontext);
+}
+
+static inline struct qedr_dev *get_qedr_dev(struct ib_device *ibdev)
+{
+ return container_of(ibdev, struct qedr_dev, ibdev);
+}
+
+static inline struct qedr_pd *get_qedr_pd(struct ib_pd *ibpd)
+{
+ return container_of(ibpd, struct qedr_pd, ibpd);
+}
+
+static inline struct qedr_xrcd *get_qedr_xrcd(struct ib_xrcd *ibxrcd)
+{
+ return container_of(ibxrcd, struct qedr_xrcd, ibxrcd);
+}
+
+static inline struct qedr_cq *get_qedr_cq(struct ib_cq *ibcq)
+{
+ return container_of(ibcq, struct qedr_cq, ibcq);
+}
+
+static inline struct qedr_qp *get_qedr_qp(struct ib_qp *ibqp)
+{
+ return container_of(ibqp, struct qedr_qp, ibqp);
+}
+
+static inline struct qedr_ah *get_qedr_ah(struct ib_ah *ibah)
+{
+ return container_of(ibah, struct qedr_ah, ibah);
+}
+
+static inline struct qedr_mr *get_qedr_mr(struct ib_mr *ibmr)
+{
+ return container_of(ibmr, struct qedr_mr, ibmr);
+}
+
+static inline struct qedr_srq *get_qedr_srq(struct ib_srq *ibsrq)
+{
+ return container_of(ibsrq, struct qedr_srq, ibsrq);
+}
+
+static inline bool qedr_qp_has_srq(struct qedr_qp *qp)
+{
+ return qp->srq;
+}
+
+static inline bool qedr_qp_has_sq(struct qedr_qp *qp)
+{
+ if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_XRC_TGT)
+ return false;
+
+ return true;
+}
+
+static inline bool qedr_qp_has_rq(struct qedr_qp *qp)
+{
+ if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_XRC_INI ||
+ qp->qp_type == IB_QPT_XRC_TGT || qedr_qp_has_srq(qp))
+ return false;
+
+ return true;
+}
+
+static inline struct qedr_user_mmap_entry *
+get_qedr_mmap_entry(struct rdma_user_mmap_entry *rdma_entry)
+{
+ return container_of(rdma_entry, struct qedr_user_mmap_entry,
+ rdma_entry);
+}
+#endif
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