Building the WQE descriptors for different verb
operations are similar in kernel and user-space.
Add these shared functions and headers.
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@xxxxxxxxx>
---
providers/irdma/irdma.h | 54 ++
providers/irdma/uk.c | 1724 +++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 1778 insertions(+)
create mode 100644 providers/irdma/irdma.h
create mode 100644 providers/irdma/uk.c
diff --git a/providers/irdma/irdma.h b/providers/irdma/irdma.h
new file mode 100644
index 0000000..09611e8
--- /dev/null
+++ b/providers/irdma/irdma.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB */
+/* Copyright (c) 2019 - 2020 Intel Corporation */
+#ifndef IRDMA_H
+#define IRDMA_H
+
+#define IRDMA_WQEALLOC_WQE_DESC_INDEX_S 20
+#define IRDMA_WQEALLOC_WQE_DESC_INDEX_M (0xfff << IRDMA_WQEALLOC_WQE_DESC_INDEX_S)
+
+enum irdma_vers {
+ IRDMA_GEN_RSVD,
+ IRDMA_GEN_1,
+ IRDMA_GEN_2,
+};
+
+struct irdma_uk_attrs {
+ __u64 feature_flags;
+ __u32 max_hw_wq_frags;
+ __u32 max_hw_read_sges;
+ __u32 max_hw_inline;
+ __u32 max_hw_rq_quanta;
+ __u32 max_hw_wq_quanta;
+ __u32 min_hw_cq_size;
+ __u32 max_hw_cq_size;
+ __u16 max_hw_sq_chunk;
+ __u8 hw_rev;
+};
+
+struct irdma_hw_attrs {
+ struct irdma_uk_attrs uk_attrs;
+ __u64 max_hw_outbound_msg_size;
+ __u64 max_hw_inbound_msg_size;
+ __u64 max_mr_size;
+ __u32 min_hw_qp_id;
+ __u32 min_hw_aeq_size;
+ __u32 max_hw_aeq_size;
+ __u32 min_hw_ceq_size;
+ __u32 max_hw_ceq_size;
+ __u32 max_hw_device_pages;
+ __u32 max_hw_vf_fpm_id;
+ __u32 first_hw_vf_fpm_id;
+ __u32 max_hw_ird;
+ __u32 max_hw_ord;
+ __u32 max_hw_wqes;
+ __u32 max_hw_pds;
+ __u32 max_hw_ena_vf_count;
+ __u32 max_qp_wr;
+ __u32 max_pe_ready_count;
+ __u32 max_done_count;
+ __u32 max_sleep_count;
+ __u32 max_cqp_compl_wait_time_ms;
+ __u16 max_stat_inst;
+};
+
+#endif /* IRDMA_H*/
diff --git a/providers/irdma/uk.c b/providers/irdma/uk.c
new file mode 100644
index 0000000..5a7bf38
--- /dev/null
+++ b/providers/irdma/uk.c
@@ -0,0 +1,1724 @@
+// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
+/* Copyright (c) 2015 - 2020 Intel Corporation */
+#include "osdep.h"
+#include "status.h"
+#include "defs.h"
+#include "user.h"
+#include "irdma.h"
+
+/**
+ * irdma_set_fragment - set fragment in wqe
+ * @wqe: wqe for setting fragment
+ * @offset: offset value
+ * @sge: sge length and stag
+ * @valid: The wqe valid
+ */
+static void irdma_set_fragment(__le64 *wqe, __u32 offset, struct irdma_sge *sge,
+ __u8 valid)
+{
+ if (sge) {
+ set_64bit_val(wqe, offset,
+ LS_64(sge->tag_off, IRDMAQPSQ_FRAG_TO));
+ set_64bit_val(wqe, offset + 8,
+ LS_64(valid, IRDMAQPSQ_VALID) |
+ LS_64(sge->len, IRDMAQPSQ_FRAG_LEN) |
+ LS_64(sge->stag, IRDMAQPSQ_FRAG_STAG));
+ } else {
+ set_64bit_val(wqe, offset, 0);
+ set_64bit_val(wqe, offset + 8,
+ LS_64(valid, IRDMAQPSQ_VALID));
+ }
+}
+
+/**
+ * irdma_set_fragment_gen_1 - set fragment in wqe
+ * @wqe: wqe for setting fragment
+ * @offset: offset value
+ * @sge: sge length and stag
+ * @valid: wqe valid flag
+ */
+static void irdma_set_fragment_gen_1(__le64 *wqe, __u32 offset,
+ struct irdma_sge *sge, __u8 valid)
+{
+ if (sge) {
+ set_64bit_val(wqe, offset,
+ LS_64(sge->tag_off, IRDMAQPSQ_FRAG_TO));
+ set_64bit_val(wqe, offset + 8,
+ LS_64(sge->len, IRDMAQPSQ_GEN1_FRAG_LEN) |
+ LS_64(sge->stag, IRDMAQPSQ_GEN1_FRAG_STAG));
+ } else {
+ set_64bit_val(wqe, offset, 0);
+ set_64bit_val(wqe, offset + 8, 0);
+ }
+}
+
+/**
+ * irdma_nop_1 - insert a NOP wqe
+ * @qp: hw qp ptr
+ */
+static enum irdma_status_code irdma_nop_1(struct irdma_qp_uk *qp)
+{
+ __u64 hdr;
+ __le64 *wqe;
+ __u32 wqe_idx;
+ bool signaled = false;
+
+ if (!qp->sq_ring.head)
+ return IRDMA_ERR_PARAM;
+
+ wqe_idx = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
+ wqe = qp->sq_base[wqe_idx].elem;
+
+ qp->sq_wrtrk_array[wqe_idx].quanta = IRDMA_QP_WQE_MIN_QUANTA;
+
+ set_64bit_val(wqe, 0, 0);
+ set_64bit_val(wqe, 8, 0);
+ set_64bit_val(wqe, 16, 0);
+
+ hdr = LS_64(IRDMAQP_OP_NOP, IRDMAQPSQ_OPCODE) |
+ LS_64(signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ /* make sure WQE is written before valid bit is set */
+ udma_to_device_barrier();
+
+ set_64bit_val(wqe, 24, hdr);
+
+ return 0;
+}
+
+/**
+ * irdma_clear_wqes - clear next 128 sq entries
+ * @qp: hw qp ptr
+ * @qp_wqe_idx: wqe_idx
+ */
+void irdma_clr_wqes(struct irdma_qp_uk *qp, __u32 qp_wqe_idx)
+{
+ __le64 *wqe;
+ __u32 wqe_idx;
+
+ if (!(qp_wqe_idx & 0x7F)) {
+ wqe_idx = (qp_wqe_idx + 128) % qp->sq_ring.size;
+ wqe = qp->sq_base[wqe_idx].elem;
+ if (wqe_idx)
+ memset(wqe, qp->swqe_polarity ? 0 : 0xFF, 0x1000);
+ else
+ memset(wqe, qp->swqe_polarity ? 0xFF : 0, 0x1000);
+ }
+}
+
+/**
+ * irdma_qp_post_wr - ring doorbell
+ * @qp: hw qp ptr
+ */
+void irdma_qp_post_wr(struct irdma_qp_uk *qp)
+{
+ __u64 temp;
+ __u32 hw_sq_tail;
+ __u32 sw_sq_head;
+
+ /* valid bit is written and loads completed before reading shadow */
+ atomic_thread_fence(memory_order_seq_cst);
+
+ /* read the doorbell shadow area */
+ get_64bit_val(qp->shadow_area, 0, &temp);
+
+ hw_sq_tail = (__u32)RS_64(temp, IRDMA_QP_DBSA_HW_SQ_TAIL);
+ sw_sq_head = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
+ if (sw_sq_head != qp->initial_ring.head) {
+ if (qp->push_mode) {
+ db_wr32(qp->qp_id, qp->wqe_alloc_db);
+ qp->push_mode = false;
+ } else if (sw_sq_head != hw_sq_tail) {
+ if (sw_sq_head > qp->initial_ring.head) {
+ if (hw_sq_tail >= qp->initial_ring.head &&
+ hw_sq_tail < sw_sq_head)
+ db_wr32(qp->qp_id, qp->wqe_alloc_db);
+ } else {
+ if (hw_sq_tail >= qp->initial_ring.head ||
+ hw_sq_tail < sw_sq_head)
+ db_wr32(qp->qp_id, qp->wqe_alloc_db);
+ }
+ }
+ }
+
+ qp->initial_ring.head = qp->sq_ring.head;
+}
+
+/**
+ * irdma_qp_ring_push_db - ring qp doorbell
+ * @qp: hw qp ptr
+ * @wqe_idx: wqe index
+ */
+static void irdma_qp_ring_push_db(struct irdma_qp_uk *qp, __u32 wqe_idx)
+{
+ set_32bit_val(qp->push_db, 0,
+ LS_32(wqe_idx >> 3, IRDMA_WQEALLOC_WQE_DESC_INDEX) | qp->qp_id);
+ qp->initial_ring.head = qp->sq_ring.head;
+ qp->push_mode = true;
+}
+
+void irdma_qp_push_wqe(struct irdma_qp_uk *qp, __le64 *wqe, __u16 quanta,
+ __u32 wqe_idx, bool post_sq)
+{
+ __le64 *push;
+
+ if (IRDMA_RING_CURRENT_HEAD(qp->initial_ring) !=
+ IRDMA_RING_CURRENT_TAIL(qp->sq_ring) &&
+ !(qp->push_mode)) {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ } else {
+ push = (__le64 *)((uintptr_t)qp->push_wqe +
+ (wqe_idx & 0x7) * 0x20);
+ memcpy(push, wqe, quanta * IRDMA_QP_WQE_MIN_SIZE);
+ irdma_qp_ring_push_db(qp, wqe_idx);
+ }
+}
+
+/**
+ * irdma_qp_get_next_send_wqe - pad with NOP if needed, return where next WR should go
+ * @qp: hw qp ptr
+ * @wqe_idx: return wqe index
+ * @quanta: size of WR in quanta
+ * @total_size: size of WR in bytes
+ * @info: info on WR
+ */
+__le64 *irdma_qp_get_next_send_wqe(struct irdma_qp_uk *qp, __u32 *wqe_idx,
+ __u16 quanta, __u32 total_size,
+ struct irdma_post_sq_info *info)
+{
+ __le64 *wqe;
+ __le64 *wqe_0 = NULL;
+ __u32 nop_wqe_idx;
+ __u16 avail_quanta;
+ __u16 i;
+
+ avail_quanta = qp->uk_attrs->max_hw_sq_chunk -
+ (IRDMA_RING_CURRENT_HEAD(qp->sq_ring) %
+ qp->uk_attrs->max_hw_sq_chunk);
+ if (quanta <= avail_quanta) {
+ /* WR fits in current chunk */
+ if (quanta > IRDMA_SQ_RING_FREE_QUANTA(qp->sq_ring))
+ return NULL;
+ } else {
+ /* Need to pad with NOP */
+ if (quanta + avail_quanta >
+ IRDMA_SQ_RING_FREE_QUANTA(qp->sq_ring))
+ return NULL;
+
+ nop_wqe_idx = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
+ for (i = 0; i < avail_quanta; i++) {
+ irdma_nop_1(qp);
+ IRDMA_RING_MOVE_HEAD_NOCHECK(qp->sq_ring);
+ }
+ if (qp->push_db && info->push_wqe)
+ irdma_qp_push_wqe(qp, qp->sq_base[nop_wqe_idx].elem,
+ avail_quanta, nop_wqe_idx, true);
+ }
+
+ *wqe_idx = IRDMA_RING_CURRENT_HEAD(qp->sq_ring);
+ if (!*wqe_idx)
+ qp->swqe_polarity = !qp->swqe_polarity;
+
+ IRDMA_RING_MOVE_HEAD_BY_COUNT_NOCHECK(qp->sq_ring, quanta);
+
+ wqe = qp->sq_base[*wqe_idx].elem;
+ if (qp->uk_attrs->hw_rev == IRDMA_GEN_1 && quanta == 1 &&
+ (IRDMA_RING_CURRENT_HEAD(qp->sq_ring) & 1)) {
+ wqe_0 = qp->sq_base[IRDMA_RING_CURRENT_HEAD(qp->sq_ring)].elem;
+ wqe_0[3] = htole64(LS_64(!qp->swqe_polarity, IRDMAQPSQ_VALID));
+ }
+ qp->sq_wrtrk_array[*wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[*wqe_idx].wr_len = total_size;
+ qp->sq_wrtrk_array[*wqe_idx].quanta = quanta;
+
+ return wqe;
+}
+
+/**
+ * irdma_qp_get_next_recv_wqe - get next qp's rcv wqe
+ * @qp: hw qp ptr
+ * @wqe_idx: return wqe index
+ */
+__le64 *irdma_qp_get_next_recv_wqe(struct irdma_qp_uk *qp, __u32 *wqe_idx)
+{
+ __le64 *wqe;
+ enum irdma_status_code ret_code;
+
+ if (IRDMA_RING_FULL_ERR(qp->rq_ring))
+ return NULL;
+
+ IRDMA_ATOMIC_RING_MOVE_HEAD(qp->rq_ring, *wqe_idx, ret_code);
+ if (ret_code)
+ return NULL;
+
+ if (!*wqe_idx)
+ qp->rwqe_polarity = !qp->rwqe_polarity;
+ /* rq_wqe_size_multiplier is no of 32 byte quanta in in one rq wqe */
+ wqe = qp->rq_base[*wqe_idx * qp->rq_wqe_size_multiplier].elem;
+
+ return wqe;
+}
+
+/**
+ * irdma_rdma_write - rdma write operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum irdma_status_code irdma_rdma_write(struct irdma_qp_uk *qp,
+ struct irdma_post_sq_info *info,
+ bool post_sq)
+{
+ __u64 hdr;
+ __le64 *wqe;
+ struct irdma_rdma_write *op_info;
+ __u32 i, wqe_idx;
+ __u32 total_size = 0, byte_off;
+ enum irdma_status_code ret_code;
+ __u32 frag_cnt, addl_frag_cnt;
+ bool read_fence = false;
+ __u16 quanta;
+
+ info->push_wqe = qp->push_db ? true : false;
+
+ op_info = &info->op.rdma_write;
+ if (op_info->num_lo_sges > qp->max_sq_frag_cnt)
+ return IRDMA_ERR_INVALID_FRAG_COUNT;
+
+ for (i = 0; i < op_info->num_lo_sges; i++)
+ total_size += op_info->lo_sg_list[i].len;
+
+ read_fence |= info->read_fence;
+
+ if (info->imm_data_valid)
+ frag_cnt = op_info->num_lo_sges + 1;
+ else
+ frag_cnt = op_info->num_lo_sges;
+ addl_frag_cnt = frag_cnt > 1 ? (frag_cnt - 1) : 0;
+ ret_code = irdma_fragcnt_to_quanta_sq(frag_cnt, &quanta);
+ if (ret_code)
+ return ret_code;
+
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, total_size,
+ info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ set_64bit_val(wqe, 16,
+ LS_64(op_info->rem_addr.tag_off, IRDMAQPSQ_FRAG_TO));
+
+ if (info->imm_data_valid) {
+ set_64bit_val(wqe, 0,
+ LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));
+ i = 0;
+ } else {
+ qp->wqe_ops.iw_set_fragment(wqe, 0,
+ op_info->lo_sg_list,
+ qp->swqe_polarity);
+ i = 1;
+ }
+
+ for (byte_off = 32; i < op_info->num_lo_sges; i++) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off,
+ &op_info->lo_sg_list[i],
+ qp->swqe_polarity);
+ byte_off += 16;
+ }
+
+ /* if not an odd number set valid bit in next fragment */
+ if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 && !(frag_cnt & 0x01) &&
+ frag_cnt) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
+ qp->swqe_polarity);
+ if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
+ ++addl_frag_cnt;
+ }
+
+ hdr = LS_64(op_info->rem_addr.stag, IRDMAQPSQ_REMSTAG) |
+ LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
+ LS_64((info->imm_data_valid ? 1 : 0), IRDMAQPSQ_IMMDATAFLAG) |
+ LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
+ LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
+ LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
+ LS_64(read_fence, IRDMAQPSQ_READFENCE) |
+ LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+ if (info->push_wqe) {
+ irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
+ } else {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_rdma_read - rdma read command
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @inv_stag: flag for inv_stag
+ * @post_sq: flag to post sq
+ */
+static enum irdma_status_code irdma_rdma_read(struct irdma_qp_uk *qp,
+ struct irdma_post_sq_info *info,
+ bool inv_stag, bool post_sq)
+{
+ struct irdma_rdma_read *op_info;
+ enum irdma_status_code ret_code;
+ __u32 i, byte_off, total_size = 0;
+ bool local_fence = false;
+ __u32 addl_frag_cnt;
+ __le64 *wqe;
+ __u32 wqe_idx;
+ __u16 quanta;
+ __u64 hdr;
+
+ info->push_wqe = qp->push_db ? true : false;
+
+ op_info = &info->op.rdma_read;
+ if (qp->max_sq_frag_cnt < op_info->num_lo_sges)
+ return IRDMA_ERR_INVALID_FRAG_COUNT;
+
+ for (i = 0; i < op_info->num_lo_sges; i++)
+ total_size += op_info->lo_sg_list[i].len;
+
+ ret_code = irdma_fragcnt_to_quanta_sq(op_info->num_lo_sges, &quanta);
+ if (ret_code)
+ return ret_code;
+
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, total_size,
+ info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ addl_frag_cnt = op_info->num_lo_sges > 1 ?
+ (op_info->num_lo_sges - 1) : 0;
+ local_fence |= info->local_fence;
+
+ qp->wqe_ops.iw_set_fragment(wqe, 0, op_info->lo_sg_list,
+ qp->swqe_polarity);
+ for (i = 1, byte_off = 32; i < op_info->num_lo_sges; ++i) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off,
+ &op_info->lo_sg_list[i],
+ qp->swqe_polarity);
+ byte_off += 16;
+ }
+
+ /* if not an odd number set valid bit in next fragment */
+ if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 &&
+ !(op_info->num_lo_sges & 0x01) && op_info->num_lo_sges) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
+ qp->swqe_polarity);
+ if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
+ ++addl_frag_cnt;
+ }
+ set_64bit_val(wqe, 16,
+ LS_64(op_info->rem_addr.tag_off, IRDMAQPSQ_FRAG_TO));
+ hdr = LS_64(op_info->rem_addr.stag, IRDMAQPSQ_REMSTAG) |
+ LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
+ LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
+ LS_64((inv_stag ? IRDMAQP_OP_RDMA_READ_LOC_INV : IRDMAQP_OP_RDMA_READ),
+ IRDMAQPSQ_OPCODE) |
+ LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
+ LS_64(info->read_fence, IRDMAQPSQ_READFENCE) |
+ LS_64(local_fence, IRDMAQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+ if (info->push_wqe) {
+ irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
+ } else {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_send - rdma send command
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum irdma_status_code irdma_send(struct irdma_qp_uk *qp,
+ struct irdma_post_sq_info *info,
+ bool post_sq)
+{
+ __le64 *wqe;
+ struct irdma_post_send *op_info;
+ __u64 hdr;
+ __u32 i, wqe_idx, total_size = 0, byte_off;
+ enum irdma_status_code ret_code;
+ __u32 frag_cnt, addl_frag_cnt;
+ bool read_fence = false;
+ __u16 quanta;
+
+ info->push_wqe = qp->push_db ? true : false;
+
+ op_info = &info->op.send;
+ if (qp->max_sq_frag_cnt < op_info->num_sges)
+ return IRDMA_ERR_INVALID_FRAG_COUNT;
+
+ for (i = 0; i < op_info->num_sges; i++)
+ total_size += op_info->sg_list[i].len;
+
+ if (info->imm_data_valid)
+ frag_cnt = op_info->num_sges + 1;
+ else
+ frag_cnt = op_info->num_sges;
+ ret_code = irdma_fragcnt_to_quanta_sq(frag_cnt, &quanta);
+ if (ret_code)
+ return ret_code;
+
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, total_size,
+ info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ read_fence |= info->read_fence;
+ addl_frag_cnt = frag_cnt > 1 ? (frag_cnt - 1) : 0;
+ if (info->imm_data_valid) {
+ set_64bit_val(wqe, 0,
+ LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));
+ i = 0;
+ } else {
+ qp->wqe_ops.iw_set_fragment(wqe, 0, op_info->sg_list,
+ qp->swqe_polarity);
+ i = 1;
+ }
+
+ for (byte_off = 32; i < op_info->num_sges; i++) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off, &op_info->sg_list[i],
+ qp->swqe_polarity);
+ byte_off += 16;
+ }
+
+ /* if not an odd number set valid bit in next fragment */
+ if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 && !(frag_cnt & 0x01) &&
+ frag_cnt) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
+ qp->swqe_polarity);
+ if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
+ ++addl_frag_cnt;
+ }
+
+ set_64bit_val(wqe, 16,
+ LS_64(op_info->qkey, IRDMAQPSQ_DESTQKEY) |
+ LS_64(op_info->dest_qp, IRDMAQPSQ_DESTQPN));
+ hdr = LS_64(info->stag_to_inv, IRDMAQPSQ_REMSTAG) |
+ LS_64(op_info->ah_id, IRDMAQPSQ_AHID) |
+ LS_64((info->imm_data_valid ? 1 : 0), IRDMAQPSQ_IMMDATAFLAG) |
+ LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
+ LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
+ LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
+ LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
+ LS_64(read_fence, IRDMAQPSQ_READFENCE) |
+ LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(info->udp_hdr, IRDMAQPSQ_UDPHEADER) |
+ LS_64(info->l4len, IRDMAQPSQ_L4LEN) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+ if (info->push_wqe) {
+ irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
+ } else {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_set_mw_bind_wqe_gen_1 - set mw bind wqe
+ * @wqe: wqe for setting fragment
+ * @op_info: info for setting bind wqe values
+ */
+static void irdma_set_mw_bind_wqe_gen_1(__le64 *wqe,
+ struct irdma_bind_window *op_info)
+{
+ set_64bit_val(wqe, 0, (uintptr_t)op_info->va);
+ set_64bit_val(wqe, 8,
+ LS_64(op_info->mw_stag, IRDMAQPSQ_PARENTMRSTAG) |
+ LS_64(op_info->mr_stag, IRDMAQPSQ_MWSTAG));
+ set_64bit_val(wqe, 16, op_info->bind_len);
+}
+
+/**
+ * irdma_copy_inline_data_gen_1 - Copy inline data to wqe
+ * @dest: pointer to wqe
+ * @src: pointer to inline data
+ * @len: length of inline data to copy
+ * @polarity: compatibility parameter
+ */
+static void irdma_copy_inline_data_gen_1(__u8 *dest, __u8 *src, __u32 len,
+ __u8 polarity)
+{
+ if (len <= 16) {
+ memcpy(dest, src, len);
+ } else {
+ memcpy(dest, src, 16);
+ src += 16;
+ dest = dest + 32;
+ memcpy(dest, src, len - 16);
+ }
+}
+
+/**
+ * irdma_inline_data_size_to_quanta_gen_1 - based on inline data, quanta
+ * @data_size: data size for inline
+ *
+ * Gets the quanta based on inline and immediate data.
+ */
+static inline __u16 irdma_inline_data_size_to_quanta_gen_1(__u32 data_size)
+{
+ return data_size <= 16 ? IRDMA_QP_WQE_MIN_QUANTA : 2;
+}
+
+/**
+ * irdma_set_mw_bind_wqe - set mw bind in wqe
+ * @wqe: wqe for setting mw bind
+ * @op_info: info for setting wqe values
+ */
+static void irdma_set_mw_bind_wqe(__le64 *wqe,
+ struct irdma_bind_window *op_info)
+{
+ set_64bit_val(wqe, 0, (uintptr_t)op_info->va);
+ set_64bit_val(wqe, 8,
+ LS_64(op_info->mr_stag, IRDMAQPSQ_PARENTMRSTAG) |
+ LS_64(op_info->mw_stag, IRDMAQPSQ_MWSTAG));
+ set_64bit_val(wqe, 16, op_info->bind_len);
+}
+
+/**
+ * irdma_copy_inline_data - Copy inline data to wqe
+ * @dest: pointer to wqe
+ * @src: pointer to inline data
+ * @len: length of inline data to copy
+ * @polarity: polarity of wqe valid bit
+ */
+static void irdma_copy_inline_data(__u8 *dest, __u8 *src, __u32 len, __u8 polarity)
+{
+ __u8 inline_valid = polarity << IRDMA_INLINE_VALID_S;
+ __u32 copy_size;
+
+ dest += 8;
+ if (len <= 8) {
+ memcpy(dest, src, len);
+ return;
+ }
+
+ *((__u64 *)dest) = *((__u64 *)src);
+ len -= 8;
+ src += 8;
+ dest += 24; /* point to additional 32 byte quanta */
+
+ while (len) {
+ copy_size = len < 31 ? len : 31;
+ memcpy(dest, src, copy_size);
+ *(dest + 31) = inline_valid;
+ len -= copy_size;
+ dest += 32;
+ src += copy_size;
+ }
+}
+
+/**
+ * irdma_inline_data_size_to_quanta - based on inline data, quanta
+ * @data_size: data size for inline
+ *
+ * Gets the quanta based on inline and immediate data.
+ */
+static __u16 irdma_inline_data_size_to_quanta(__u32 data_size)
+{
+ if (data_size <= 8)
+ return IRDMA_QP_WQE_MIN_QUANTA;
+ else if (data_size <= 39)
+ return 2;
+ else if (data_size <= 70)
+ return 3;
+ else if (data_size <= 101)
+ return 4;
+ else if (data_size <= 132)
+ return 5;
+ else if (data_size <= 163)
+ return 6;
+ else if (data_size <= 194)
+ return 7;
+ else
+ return 8;
+}
+
+/**
+ * irdma_inline_rdma_write - inline rdma write operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum irdma_status_code
+irdma_inline_rdma_write(struct irdma_qp_uk *qp, struct irdma_post_sq_info *info,
+ bool post_sq)
+{
+ __le64 *wqe;
+ struct irdma_inline_rdma_write *op_info;
+ __u64 hdr = 0;
+ __u32 wqe_idx;
+ bool read_fence = false;
+ __u16 quanta;
+
+ info->push_wqe = qp->push_db ? true : false;
+ op_info = &info->op.inline_rdma_write;
+
+ if (op_info->len > qp->max_inline_data)
+ return IRDMA_ERR_INVALID_INLINE_DATA_SIZE;
+
+ quanta = qp->wqe_ops.iw_inline_data_size_to_quanta(op_info->len);
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, op_info->len,
+ info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ read_fence |= info->read_fence;
+ set_64bit_val(wqe, 16,
+ LS_64(op_info->rem_addr.tag_off, IRDMAQPSQ_FRAG_TO));
+
+ hdr = LS_64(op_info->rem_addr.stag, IRDMAQPSQ_REMSTAG) |
+ LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
+ LS_64(op_info->len, IRDMAQPSQ_INLINEDATALEN) |
+ LS_64(info->report_rtt ? 1 : 0, IRDMAQPSQ_REPORTRTT) |
+ LS_64(1, IRDMAQPSQ_INLINEDATAFLAG) |
+ LS_64(info->imm_data_valid ? 1 : 0, IRDMAQPSQ_IMMDATAFLAG) |
+ LS_64(info->push_wqe ? 1 : 0, IRDMAQPSQ_PUSHWQE) |
+ LS_64(read_fence, IRDMAQPSQ_READFENCE) |
+ LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ if (info->imm_data_valid)
+ set_64bit_val(wqe, 0,
+ LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));
+
+ qp->wqe_ops.iw_copy_inline_data((__u8 *)wqe, op_info->data, op_info->len,
+ qp->swqe_polarity);
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+
+ if (info->push_wqe) {
+ irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
+ } else {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_inline_send - inline send operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum irdma_status_code irdma_inline_send(struct irdma_qp_uk *qp,
+ struct irdma_post_sq_info *info,
+ bool post_sq)
+{
+ __le64 *wqe;
+ struct irdma_post_inline_send *op_info;
+ __u64 hdr;
+ __u32 wqe_idx;
+ bool read_fence = false;
+ __u16 quanta;
+
+ info->push_wqe = qp->push_db ? true : false;
+ op_info = &info->op.inline_send;
+
+ if (op_info->len > qp->max_inline_data)
+ return IRDMA_ERR_INVALID_INLINE_DATA_SIZE;
+
+ quanta = qp->wqe_ops.iw_inline_data_size_to_quanta(op_info->len);
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, quanta, op_info->len,
+ info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ set_64bit_val(wqe, 16,
+ LS_64(op_info->qkey, IRDMAQPSQ_DESTQKEY) |
+ LS_64(op_info->dest_qp, IRDMAQPSQ_DESTQPN));
+
+ read_fence |= info->read_fence;
+ hdr = LS_64(info->stag_to_inv, IRDMAQPSQ_REMSTAG) |
+ LS_64(op_info->ah_id, IRDMAQPSQ_AHID) |
+ LS_64(info->op_type, IRDMAQPSQ_OPCODE) |
+ LS_64(op_info->len, IRDMAQPSQ_INLINEDATALEN) |
+ LS_64((info->imm_data_valid ? 1 : 0), IRDMAQPSQ_IMMDATAFLAG) |
+ LS_64((info->report_rtt ? 1 : 0), IRDMAQPSQ_REPORTRTT) |
+ LS_64(1, IRDMAQPSQ_INLINEDATAFLAG) |
+ LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
+ LS_64(read_fence, IRDMAQPSQ_READFENCE) |
+ LS_64(info->local_fence, IRDMAQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(info->udp_hdr, IRDMAQPSQ_UDPHEADER) |
+ LS_64(info->l4len, IRDMAQPSQ_L4LEN) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ if (info->imm_data_valid)
+ set_64bit_val(wqe, 0,
+ LS_64(info->imm_data, IRDMAQPSQ_IMMDATA));
+ qp->wqe_ops.iw_copy_inline_data((__u8 *)wqe, op_info->data, op_info->len,
+ qp->swqe_polarity);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+
+ if (info->push_wqe) {
+ irdma_qp_push_wqe(qp, wqe, quanta, wqe_idx, post_sq);
+ } else {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_stag_local_invalidate - stag invalidate operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum irdma_status_code
+irdma_stag_local_invalidate(struct irdma_qp_uk *qp,
+ struct irdma_post_sq_info *info, bool post_sq)
+{
+ __le64 *wqe;
+ struct irdma_inv_local_stag *op_info;
+ __u64 hdr;
+ __u32 wqe_idx;
+ bool local_fence = false;
+ struct irdma_sge sge = {};
+
+ info->push_wqe = qp->push_db ? true : false;
+ op_info = &info->op.inv_local_stag;
+ local_fence = info->local_fence;
+
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, IRDMA_QP_WQE_MIN_QUANTA,
+ 0, info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ sge.stag = op_info->target_stag;
+ qp->wqe_ops.iw_set_fragment(wqe, 0, &sge, 0);
+
+ set_64bit_val(wqe, 16, 0);
+
+ hdr = LS_64(IRDMA_OP_TYPE_INV_STAG, IRDMAQPSQ_OPCODE) |
+ LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
+ LS_64(info->read_fence, IRDMAQPSQ_READFENCE) |
+ LS_64(local_fence, IRDMAQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+
+ if (info->push_wqe) {
+ irdma_qp_push_wqe(qp, wqe, IRDMA_QP_WQE_MIN_QUANTA, wqe_idx,
+ post_sq);
+ } else {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_mw_bind - bind Memory Window
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum irdma_status_code irdma_mw_bind(struct irdma_qp_uk *qp,
+ struct irdma_post_sq_info *info,
+ bool post_sq)
+{
+ __le64 *wqe;
+ struct irdma_bind_window *op_info;
+ __u64 hdr;
+ __u32 wqe_idx;
+ bool local_fence = false;
+
+ info->push_wqe = qp->push_db ? true : false;
+ op_info = &info->op.bind_window;
+ local_fence |= info->local_fence;
+
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, IRDMA_QP_WQE_MIN_QUANTA,
+ 0, info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ qp->wqe_ops.iw_set_mw_bind_wqe(wqe, op_info);
+
+ hdr = LS_64(IRDMA_OP_TYPE_BIND_MW, IRDMAQPSQ_OPCODE) |
+ LS_64(((op_info->ena_reads << 2) | (op_info->ena_writes << 3)),
+ IRDMAQPSQ_STAGRIGHTS) |
+ LS_64((op_info->addressing_type == IRDMA_ADDR_TYPE_VA_BASED ? 1 : 0),
+ IRDMAQPSQ_VABASEDTO) |
+ LS_64((op_info->mem_window_type_1 ? 1 : 0),
+ IRDMAQPSQ_MEMWINDOWTYPE) |
+ LS_64((info->push_wqe ? 1 : 0), IRDMAQPSQ_PUSHWQE) |
+ LS_64(info->read_fence, IRDMAQPSQ_READFENCE) |
+ LS_64(local_fence, IRDMAQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+
+ if (info->push_wqe) {
+ irdma_qp_push_wqe(qp, wqe, IRDMA_QP_WQE_MIN_QUANTA, wqe_idx,
+ post_sq);
+ } else {
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_post_receive - post receive wqe
+ * @qp: hw qp ptr
+ * @info: post rq information
+ */
+static enum irdma_status_code
+irdma_post_receive(struct irdma_qp_uk *qp, struct irdma_post_rq_info *info)
+{
+ __u32 total_size = 0, wqe_idx, i, byte_off;
+ __u32 addl_frag_cnt;
+ __le64 *wqe;
+ __u64 hdr;
+
+ if (qp->max_rq_frag_cnt < info->num_sges)
+ return IRDMA_ERR_INVALID_FRAG_COUNT;
+
+ for (i = 0; i < info->num_sges; i++)
+ total_size += info->sg_list[i].len;
+
+ wqe = irdma_qp_get_next_recv_wqe(qp, &wqe_idx);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ qp->rq_wrid_array[wqe_idx] = info->wr_id;
+ addl_frag_cnt = info->num_sges > 1 ? (info->num_sges - 1) : 0;
+ qp->wqe_ops.iw_set_fragment(wqe, 0, info->sg_list,
+ qp->rwqe_polarity);
+
+ for (i = 1, byte_off = 32; i < info->num_sges; i++) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off, &info->sg_list[i],
+ qp->rwqe_polarity);
+ byte_off += 16;
+ }
+
+ /* if not an odd number set valid bit in next fragment */
+ if (qp->uk_attrs->hw_rev >= IRDMA_GEN_2 && !(info->num_sges & 0x01) &&
+ info->num_sges) {
+ qp->wqe_ops.iw_set_fragment(wqe, byte_off, NULL,
+ qp->rwqe_polarity);
+ if (qp->uk_attrs->hw_rev == IRDMA_GEN_2)
+ ++addl_frag_cnt;
+ }
+
+ set_64bit_val(wqe, 16, 0);
+ hdr = LS_64(addl_frag_cnt, IRDMAQPSQ_ADDFRAGCNT) |
+ LS_64(qp->rwqe_polarity, IRDMAQPSQ_VALID);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+
+ return 0;
+}
+
+/**
+ * irdma_cq_resize - reset the cq buffer info
+ * @cq: cq to resize
+ * @cq_base: new cq buffer addr
+ * @cq_size: number of cqes
+ */
+static void irdma_cq_resize(struct irdma_cq_uk *cq, void *cq_base, int cq_size)
+{
+ cq->cq_base = cq_base;
+ cq->cq_size = cq_size;
+ IRDMA_RING_INIT(cq->cq_ring, cq->cq_size);
+ cq->polarity = 1;
+}
+
+/**
+ * irdma_cq_set_resized_cnt - record the count of the resized buffers
+ * @cq: cq to resize
+ * @cq_cnt: the count of the resized cq buffers
+ */
+static void irdma_cq_set_resized_cnt(struct irdma_cq_uk *cq, __u16 cq_cnt)
+{
+ __u64 temp_val;
+ __u16 sw_cq_sel;
+ __u8 arm_next_se;
+ __u8 arm_next;
+ __u8 arm_seq_num;
+
+ get_64bit_val(cq->shadow_area, 32, &temp_val);
+
+ sw_cq_sel = (__u16)RS_64(temp_val, IRDMA_CQ_DBSA_SW_CQ_SELECT);
+ sw_cq_sel += cq_cnt;
+
+ arm_seq_num = (__u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_SEQ_NUM);
+ arm_next_se = (__u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_NEXT_SE);
+ arm_next = (__u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_NEXT);
+
+ temp_val = LS_64(arm_seq_num, IRDMA_CQ_DBSA_ARM_SEQ_NUM) |
+ LS_64(sw_cq_sel, IRDMA_CQ_DBSA_SW_CQ_SELECT) |
+ LS_64(arm_next_se, IRDMA_CQ_DBSA_ARM_NEXT_SE) |
+ LS_64(arm_next, IRDMA_CQ_DBSA_ARM_NEXT);
+
+ set_64bit_val(cq->shadow_area, 32, temp_val);
+}
+
+/**
+ * irdma_cq_request_notification - cq notification request (door bell)
+ * @cq: hw cq
+ * @cq_notify: notification type
+ */
+static void irdma_cq_request_notification(struct irdma_cq_uk *cq,
+ enum irdma_cmpl_notify cq_notify)
+{
+ __u64 temp_val;
+ __u16 sw_cq_sel;
+ __u8 arm_next_se = 0;
+ __u8 arm_next = 0;
+ __u8 arm_seq_num;
+
+ get_64bit_val(cq->shadow_area, 32, &temp_val);
+ arm_seq_num = (__u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_SEQ_NUM);
+ arm_seq_num++;
+ sw_cq_sel = (__u16)RS_64(temp_val, IRDMA_CQ_DBSA_SW_CQ_SELECT);
+ arm_next_se = (__u8)RS_64(temp_val, IRDMA_CQ_DBSA_ARM_NEXT_SE);
+ arm_next_se |= 1;
+ if (cq_notify == IRDMA_CQ_COMPL_EVENT)
+ arm_next = 1;
+ temp_val = LS_64(arm_seq_num, IRDMA_CQ_DBSA_ARM_SEQ_NUM) |
+ LS_64(sw_cq_sel, IRDMA_CQ_DBSA_SW_CQ_SELECT) |
+ LS_64(arm_next_se, IRDMA_CQ_DBSA_ARM_NEXT_SE) |
+ LS_64(arm_next, IRDMA_CQ_DBSA_ARM_NEXT);
+
+ set_64bit_val(cq->shadow_area, 32, temp_val);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ db_wr32(cq->cq_id, cq->cqe_alloc_db);
+}
+
+/**
+ * irdma_cq_post_entries - update tail in shadow memory
+ * @cq: hw cq
+ * @count: # of entries processed
+ */
+static enum irdma_status_code irdma_cq_post_entries(struct irdma_cq_uk *cq,
+ __u8 count)
+{
+ IRDMA_RING_MOVE_TAIL_BY_COUNT(cq->cq_ring, count);
+ set_64bit_val(cq->shadow_area, 0,
+ IRDMA_RING_CURRENT_HEAD(cq->cq_ring));
+
+ return 0;
+}
+/**
+ * irdma_cq_poll_cmpl - get cq completion info
+ * @cq: hw cq
+ * @info: cq poll information returned
+ */
+static enum irdma_status_code
+irdma_cq_poll_cmpl(struct irdma_cq_uk *cq, struct irdma_cq_poll_info *info)
+{
+ __u64 comp_ctx, qword0, qword2, qword3;
+ __le64 *cqe;
+ struct irdma_qp_uk *qp;
+ struct irdma_ring *pring = NULL;
+ __u32 wqe_idx, q_type;
+ enum irdma_status_code ret_code;
+ bool move_cq_head = true;
+ __u8 polarity;
+ bool ext_valid;
+ __le64 *ext_cqe;
+
+ if (cq->avoid_mem_cflct)
+ cqe = IRDMA_GET_CURRENT_EXTENDED_CQ_ELEM(cq);
+ else
+ cqe = IRDMA_GET_CURRENT_CQ_ELEM(cq);
+
+ get_64bit_val(cqe, 24, &qword3);
+ polarity = (__u8)RS_64(qword3, IRDMA_CQ_VALID);
+ if (polarity != cq->polarity)
+ return IRDMA_ERR_Q_EMPTY;
+
+ /* Ensure CQE contents are read after valid bit is checked */
+ udma_from_device_barrier();
+
+ ext_valid = (bool)RS_64(qword3, IRDMA_CQ_EXTCQE);
+ if (ext_valid) {
+ __u64 qword6, qword7;
+ __u32 peek_head;
+
+ if (cq->avoid_mem_cflct) {
+ ext_cqe = (__le64 *)((__u8 *)cqe + 32);
+ get_64bit_val(ext_cqe, 24, &qword7);
+ polarity = (__u8)RS_64(qword7, IRDMA_CQ_VALID);
+ } else {
+ peek_head = (cq->cq_ring.head + 1) % cq->cq_ring.size;
+ ext_cqe = cq->cq_base[peek_head].buf;
+ get_64bit_val(ext_cqe, 24, &qword7);
+ polarity = (__u8)RS_64(qword7, IRDMA_CQ_VALID);
+ if (!peek_head)
+ polarity ^= 1;
+ }
+ if (polarity != cq->polarity)
+ return IRDMA_ERR_Q_EMPTY;
+
+ /* Ensure ext CQE contents are read after ext valid bit is checked */
+ udma_from_device_barrier();
+
+ info->imm_valid = (bool)RS_64(qword7, IRDMA_CQ_IMMVALID);
+ if (info->imm_valid) {
+ __u64 qword4;
+
+ get_64bit_val(ext_cqe, 0, &qword4);
+ info->imm_data = (__u32)RS_64(qword4, IRDMA_CQ_IMMDATALOW32);
+ }
+ info->ud_smac_valid = (bool)RS_64(qword7, IRDMA_CQ_UDSMACVALID);
+ info->ud_vlan_valid = (bool)RS_64(qword7, IRDMA_CQ_UDVLANVALID);
+ if (info->ud_smac_valid || info->ud_vlan_valid) {
+ get_64bit_val(ext_cqe, 16, &qword6);
+ if (info->ud_vlan_valid)
+ info->ud_vlan = (__u16)RS_64(qword6, IRDMA_CQ_UDVLAN);
+ if (info->ud_smac_valid) {
+ info->ud_smac[5] = qword6 & 0xFF;
+ info->ud_smac[4] = (qword6 >> 8) & 0xFF;
+ info->ud_smac[3] = (qword6 >> 16) & 0xFF;
+ info->ud_smac[2] = (qword6 >> 24) & 0xFF;
+ info->ud_smac[1] = (qword6 >> 32) & 0xFF;
+ info->ud_smac[0] = (qword6 >> 40) & 0xFF;
+ }
+ }
+ } else {
+ info->imm_valid = false;
+ info->ud_smac_valid = false;
+ info->ud_vlan_valid = false;
+ }
+
+ q_type = (__u8)RS_64(qword3, IRDMA_CQ_SQ);
+ info->error = (bool)RS_64(qword3, IRDMA_CQ_ERROR);
+ info->push_dropped = (bool)RS_64(qword3, IRDMACQ_PSHDROP);
+ info->ipv4 = (bool)RS_64(qword3, IRDMACQ_IPV4);
+ if (info->error) {
+ info->major_err = RS_64(qword3, IRDMA_CQ_MAJERR);
+ info->minor_err = RS_64(qword3, IRDMA_CQ_MINERR);
+ if (info->major_err == IRDMA_FLUSH_MAJOR_ERR)
+ info->comp_status = IRDMA_COMPL_STATUS_FLUSHED;
+ else if (info->major_err == IRDMA_LEN_MAJOR_ERR)
+ info->comp_status = IRDMA_COMPL_STATUS_INVALID_LEN;
+ else
+ info->comp_status = IRDMA_COMPL_STATUS_UNKNOWN;
+ } else {
+ info->comp_status = IRDMA_COMPL_STATUS_SUCCESS;
+ }
+
+ get_64bit_val(cqe, 0, &qword0);
+ get_64bit_val(cqe, 16, &qword2);
+
+ info->tcp_seq_num_rtt = (__u32)RS_64(qword0, IRDMACQ_TCPSEQNUMRTT);
+ info->qp_id = (__u32)RS_64(qword2, IRDMACQ_QPID);
+ info->ud_src_qpn = (__u32)RS_64(qword2, IRDMACQ_UDSRCQPN);
+
+ get_64bit_val(cqe, 8, &comp_ctx);
+
+ info->solicited_event = (bool)RS_64(qword3, IRDMACQ_SOEVENT);
+ qp = (struct irdma_qp_uk *)(uintptr_t)comp_ctx;
+ if (!qp || qp->destroy_pending) {
+ ret_code = IRDMA_ERR_Q_DESTROYED;
+ goto exit;
+ }
+ wqe_idx = (__u32)RS_64(qword3, IRDMA_CQ_WQEIDX);
+ info->qp_handle = (irdma_qp_handle)(uintptr_t)qp;
+
+ if (q_type == IRDMA_CQE_QTYPE_RQ) {
+ __u32 array_idx;
+
+ array_idx = wqe_idx / qp->rq_wqe_size_multiplier;
+
+ if (info->comp_status == IRDMA_COMPL_STATUS_FLUSHED ||
+ info->comp_status == IRDMA_COMPL_STATUS_INVALID_LEN) {
+ if (!IRDMA_RING_MORE_WORK(qp->rq_ring)) {
+ ret_code = IRDMA_ERR_Q_EMPTY;
+ goto exit;
+ }
+
+ info->wr_id = qp->rq_wrid_array[qp->rq_ring.tail];
+ array_idx = qp->rq_ring.tail;
+ } else {
+ info->wr_id = qp->rq_wrid_array[array_idx];
+ }
+
+ info->bytes_xfered = (__u32)RS_64(qword0, IRDMACQ_PAYLDLEN);
+
+ if (info->imm_valid)
+ info->op_type = IRDMA_OP_TYPE_REC_IMM;
+ else
+ info->op_type = IRDMA_OP_TYPE_REC;
+ if (qword3 & IRDMACQ_STAG_M) {
+ info->stag_invalid_set = true;
+ info->inv_stag = (__u32)RS_64(qword2, IRDMACQ_INVSTAG);
+ } else {
+ info->stag_invalid_set = false;
+ }
+ IRDMA_RING_SET_TAIL(qp->rq_ring, array_idx + 1);
+ if (info->comp_status == IRDMA_COMPL_STATUS_FLUSHED) {
+ qp->rq_flush_seen = true;
+ if (!IRDMA_RING_MORE_WORK(qp->rq_ring))
+ qp->rq_flush_complete = true;
+ else
+ move_cq_head = false;
+ }
+ pring = &qp->rq_ring;
+ } else { /* q_type is IRDMA_CQE_QTYPE_SQ */
+ if (qp->first_sq_wq) {
+ qp->first_sq_wq = false;
+ if (!wqe_idx && qp->sq_ring.head == qp->sq_ring.tail) {
+ IRDMA_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
+ IRDMA_RING_MOVE_TAIL(cq->cq_ring);
+ set_64bit_val(cq->shadow_area, 0,
+ IRDMA_RING_CURRENT_HEAD(cq->cq_ring));
+ memset(info, 0,
+ sizeof(struct irdma_cq_poll_info));
+ return irdma_cq_poll_cmpl(cq, info);
+ }
+ }
+ /*cease posting push mode on push drop*/
+ if (info->push_dropped)
+ qp->push_mode = false;
+ if (info->comp_status != IRDMA_COMPL_STATUS_FLUSHED) {
+ info->wr_id = qp->sq_wrtrk_array[wqe_idx].wrid;
+ if (!info->comp_status)
+ info->bytes_xfered = qp->sq_wrtrk_array[wqe_idx].wr_len;
+ info->op_type = (__u8)RS_64(qword3, IRDMACQ_OP);
+ IRDMA_RING_SET_TAIL(qp->sq_ring,
+ wqe_idx + qp->sq_wrtrk_array[wqe_idx].quanta);
+ } else {
+ if (!IRDMA_RING_MORE_WORK(qp->sq_ring)) {
+ ret_code = IRDMA_ERR_Q_EMPTY;
+ goto exit;
+ }
+
+ do {
+ __le64 *sw_wqe;
+ __u64 wqe_qword;
+ __u8 op_type;
+ __u32 tail;
+
+ tail = qp->sq_ring.tail;
+ sw_wqe = qp->sq_base[tail].elem;
+ get_64bit_val(sw_wqe, 24,
+ &wqe_qword);
+ op_type = (__u8)RS_64(wqe_qword, IRDMAQPSQ_OPCODE);
+ info->op_type = op_type;
+ IRDMA_RING_SET_TAIL(qp->sq_ring,
+ tail + qp->sq_wrtrk_array[tail].quanta);
+ if (op_type != IRDMAQP_OP_NOP) {
+ info->wr_id = qp->sq_wrtrk_array[tail].wrid;
+ info->bytes_xfered = qp->sq_wrtrk_array[tail].wr_len;
+ break;
+ }
+ } while (1);
+ qp->sq_flush_seen = true;
+ if (!IRDMA_RING_MORE_WORK(qp->sq_ring))
+ qp->sq_flush_complete = true;
+ }
+ pring = &qp->sq_ring;
+ }
+
+ ret_code = 0;
+
+exit:
+ if (!ret_code && info->comp_status == IRDMA_COMPL_STATUS_FLUSHED)
+ if (pring && IRDMA_RING_MORE_WORK(*pring))
+ move_cq_head = false;
+
+ if (move_cq_head) {
+ IRDMA_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
+ if (!IRDMA_RING_CURRENT_HEAD(cq->cq_ring))
+ cq->polarity ^= 1;
+
+ if (ext_valid && !cq->avoid_mem_cflct) {
+ IRDMA_RING_MOVE_HEAD_NOCHECK(cq->cq_ring);
+ if (!IRDMA_RING_CURRENT_HEAD(cq->cq_ring))
+ cq->polarity ^= 1;
+ }
+
+ IRDMA_RING_MOVE_TAIL(cq->cq_ring);
+ if (!cq->avoid_mem_cflct && ext_valid)
+ IRDMA_RING_MOVE_TAIL(cq->cq_ring);
+ set_64bit_val(cq->shadow_area, 0,
+ IRDMA_RING_CURRENT_HEAD(cq->cq_ring));
+ } else {
+ qword3 &= ~IRDMA_CQ_WQEIDX_M;
+ qword3 |= LS_64(pring->tail, IRDMA_CQ_WQEIDX);
+ set_64bit_val(cqe, 24, qword3);
+ }
+
+ return ret_code;
+}
+
+/**
+ * irdma_qp_roundup - return round up qp wq depth
+ * @wqdepth: wq depth in quanta to round up
+ */
+static int irdma_qp_round_up(__u32 wqdepth)
+{
+ int scount = 1;
+
+ for (wqdepth--; scount <= 16; scount *= 2)
+ wqdepth |= wqdepth >> scount;
+
+ return ++wqdepth;
+}
+
+/**
+ * irdma_get_wqe_shift - get shift count for maximum wqe size
+ * @uk_attrs: qp HW attributes
+ * @sge: Maximum Scatter Gather Elements wqe
+ * @inline_data: Maximum inline data size
+ * @shift: Returns the shift needed based on sge
+ *
+ * Shift can be used to left shift the wqe size based on number of SGEs and inlind data size.
+ * For 1 SGE or inline data <= 8, shift = 0 (wqe size of 32
+ * bytes). For 2 or 3 SGEs or inline data <= 39, shift = 1 (wqe
+ * size of 64 bytes).
+ * For 4-7 SGE's and inline <= 101 Shift of 2 otherwise (wqe
+ * size of 256 bytes).
+ */
+void irdma_get_wqe_shift(struct irdma_uk_attrs *uk_attrs, __u32 sge,
+ __u32 inline_data, __u8 *shift)
+{
+ *shift = 0;
+ if (uk_attrs->hw_rev >= IRDMA_GEN_2) {
+ if (sge > 1 || inline_data > 8) {
+ if (sge < 4 && inline_data <= 39)
+ *shift = 1;
+ else if (sge < 8 && inline_data <= 101)
+ *shift = 2;
+ else
+ *shift = 3;
+ }
+ } else if (sge > 1 || inline_data > 16) {
+ *shift = (sge < 4 && inline_data <= 48) ? 1 : 2;
+ }
+}
+
+/*
+ * irdma_get_sqdepth - get SQ depth (quanta)
+ * @uk_attrs: qp HW attributes
+ * @sq_size: SQ size
+ * @shift: shift which determines size of WQE
+ * @sqdepth: depth of SQ
+ *
+ */
+enum irdma_status_code irdma_get_sqdepth(struct irdma_uk_attrs *uk_attrs,
+ __u32 sq_size, __u8 shift, __u32 *sqdepth)
+{
+ *sqdepth = irdma_qp_round_up((sq_size << shift) + IRDMA_SQ_RSVD);
+
+ if (*sqdepth < (IRDMA_QP_SW_MIN_WQSIZE << shift))
+ *sqdepth = IRDMA_QP_SW_MIN_WQSIZE << shift;
+ else if (*sqdepth > uk_attrs->max_hw_wq_quanta)
+ return IRDMA_ERR_INVALID_SIZE;
+
+ return 0;
+}
+
+/*
+ * irdma_get_rqdepth - get RQ depth (quanta)
+ * @uk_attrs: qp HW attributes
+ * @rq_size: RQ size
+ * @shift: shift which determines size of WQE
+ * @rqdepth: depth of RQ
+ */
+enum irdma_status_code irdma_get_rqdepth(struct irdma_uk_attrs *uk_attrs,
+ __u32 rq_size, __u8 shift, __u32 *rqdepth)
+{
+ *rqdepth = irdma_qp_round_up((rq_size << shift) + IRDMA_RQ_RSVD);
+
+ if (*rqdepth < (IRDMA_QP_SW_MIN_WQSIZE << shift))
+ *rqdepth = IRDMA_QP_SW_MIN_WQSIZE << shift;
+ else if (*rqdepth > uk_attrs->max_hw_rq_quanta)
+ return IRDMA_ERR_INVALID_SIZE;
+
+ return 0;
+}
+
+static struct irdma_qp_uk_ops iw_qp_uk_ops = {
+ .iw_inline_rdma_write = irdma_inline_rdma_write,
+ .iw_inline_send = irdma_inline_send,
+ .iw_mw_bind = irdma_mw_bind,
+ .iw_post_nop = irdma_nop,
+ .iw_post_receive = irdma_post_receive,
+ .iw_qp_post_wr = irdma_qp_post_wr,
+ .iw_qp_ring_push_db = irdma_qp_ring_push_db,
+ .iw_rdma_read = irdma_rdma_read,
+ .iw_rdma_write = irdma_rdma_write,
+ .iw_send = irdma_send,
+ .iw_stag_local_invalidate = irdma_stag_local_invalidate,
+};
+
+static struct irdma_wqe_uk_ops iw_wqe_uk_ops = {
+ .iw_copy_inline_data = irdma_copy_inline_data,
+ .iw_inline_data_size_to_quanta = irdma_inline_data_size_to_quanta,
+ .iw_set_fragment = irdma_set_fragment,
+ .iw_set_mw_bind_wqe = irdma_set_mw_bind_wqe,
+};
+
+static struct irdma_wqe_uk_ops iw_wqe_uk_ops_gen_1 = {
+ .iw_copy_inline_data = irdma_copy_inline_data_gen_1,
+ .iw_inline_data_size_to_quanta = irdma_inline_data_size_to_quanta_gen_1,
+ .iw_set_fragment = irdma_set_fragment_gen_1,
+ .iw_set_mw_bind_wqe = irdma_set_mw_bind_wqe_gen_1,
+};
+
+static struct irdma_cq_ops iw_cq_ops = {
+ .iw_cq_clean = irdma_clean_cq,
+ .iw_cq_poll_cmpl = irdma_cq_poll_cmpl,
+ .iw_cq_post_entries = irdma_cq_post_entries,
+ .iw_cq_request_notification = irdma_cq_request_notification,
+ .iw_cq_resize = irdma_cq_resize,
+ .iw_cq_set_resized_cnt = irdma_cq_set_resized_cnt,
+};
+
+static struct irdma_device_uk_ops iw_device_uk_ops = {
+ .iw_cq_uk_init = irdma_cq_uk_init,
+ .iw_qp_uk_init = irdma_qp_uk_init,
+};
+
+/**
+ * irdma_setup_connection_wqes - setup WQEs necessary to complete
+ * connection.
+ * @qp: hw qp (user and kernel)
+ * @info: qp initialization info
+ */
+static void irdma_setup_connection_wqes(struct irdma_qp_uk *qp,
+ struct irdma_qp_uk_init_info *info)
+{
+ __u16 move_cnt = 1;
+
+ if (info->abi_ver > 5 &&
+ (qp->uk_attrs->feature_flags & IRDMA_FEATURE_RTS_AE))
+ move_cnt = 3;
+
+ IRDMA_RING_MOVE_HEAD_BY_COUNT_NOCHECK(qp->sq_ring, move_cnt);
+ IRDMA_RING_MOVE_TAIL_BY_COUNT(qp->sq_ring, move_cnt);
+ IRDMA_RING_MOVE_HEAD_BY_COUNT_NOCHECK(qp->initial_ring, move_cnt);
+}
+
+/**
+ * irdma_qp_uk_init - initialize shared qp
+ * @qp: hw qp (user and kernel)
+ * @info: qp initialization info
+ *
+ * initializes the vars used in both user and kernel mode.
+ * size of the wqe depends on numbers of max. fragements
+ * allowed. Then size of wqe * the number of wqes should be the
+ * amount of memory allocated for sq and rq.
+ */
+enum irdma_status_code irdma_qp_uk_init(struct irdma_qp_uk *qp,
+ struct irdma_qp_uk_init_info *info)
+{
+ enum irdma_status_code ret_code = 0;
+ __u32 sq_ring_size;
+ __u8 sqshift, rqshift;
+
+ qp->uk_attrs = info->uk_attrs;
+ if (info->max_sq_frag_cnt > qp->uk_attrs->max_hw_wq_frags ||
+ info->max_rq_frag_cnt > qp->uk_attrs->max_hw_wq_frags)
+ return IRDMA_ERR_INVALID_FRAG_COUNT;
+
+ irdma_get_wqe_shift(qp->uk_attrs, info->max_rq_frag_cnt, 0, &rqshift);
+ if (qp->uk_attrs->hw_rev == IRDMA_GEN_1) {
+ irdma_get_wqe_shift(qp->uk_attrs, info->max_sq_frag_cnt,
+ info->max_inline_data, &sqshift);
+ if (info->abi_ver > 4)
+ rqshift = IRDMA_MAX_RQ_WQE_SHIFT_GEN1;
+ } else {
+ irdma_get_wqe_shift(qp->uk_attrs, info->max_sq_frag_cnt + 1,
+ info->max_inline_data, &sqshift);
+ }
+ qp->qp_caps = info->qp_caps;
+ qp->sq_base = info->sq;
+ qp->rq_base = info->rq;
+ qp->qp_type = info->type ? info->type : IRDMA_QP_TYPE_IWARP;
+ qp->shadow_area = info->shadow_area;
+ qp->sq_wrtrk_array = info->sq_wrtrk_array;
+
+ qp->rq_wrid_array = info->rq_wrid_array;
+ qp->wqe_alloc_db = info->wqe_alloc_db;
+ qp->qp_id = info->qp_id;
+ qp->sq_size = info->sq_size;
+ qp->push_mode = false;
+ qp->max_sq_frag_cnt = info->max_sq_frag_cnt;
+ sq_ring_size = qp->sq_size << sqshift;
+ IRDMA_RING_INIT(qp->sq_ring, sq_ring_size);
+ IRDMA_RING_INIT(qp->initial_ring, sq_ring_size);
+ if (info->first_sq_wq) {
+ irdma_setup_connection_wqes(qp, info);
+ qp->swqe_polarity = 1;
+ qp->first_sq_wq = true;
+ } else {
+ qp->swqe_polarity = 0;
+ }
+ qp->swqe_polarity_deferred = 1;
+ qp->rwqe_polarity = 0;
+ qp->rq_size = info->rq_size;
+ qp->max_rq_frag_cnt = info->max_rq_frag_cnt;
+ qp->max_inline_data = info->max_inline_data;
+ qp->rq_wqe_size = rqshift;
+ IRDMA_RING_INIT(qp->rq_ring, qp->rq_size);
+ qp->rq_wqe_size_multiplier = 1 << rqshift;
+ qp->qp_ops = iw_qp_uk_ops;
+ if (qp->uk_attrs->hw_rev == IRDMA_GEN_1)
+ qp->wqe_ops = iw_wqe_uk_ops_gen_1;
+ else
+ qp->wqe_ops = iw_wqe_uk_ops;
+ return ret_code;
+}
+
+/**
+ * irdma_cq_uk_init - initialize shared cq (user and kernel)
+ * @cq: hw cq
+ * @info: hw cq initialization info
+ */
+enum irdma_status_code irdma_cq_uk_init(struct irdma_cq_uk *cq,
+ struct irdma_cq_uk_init_info *info)
+{
+ cq->cq_base = info->cq_base;
+ cq->cq_id = info->cq_id;
+ cq->cq_size = info->cq_size;
+ cq->cqe_alloc_db = info->cqe_alloc_db;
+ cq->cq_ack_db = info->cq_ack_db;
+ cq->shadow_area = info->shadow_area;
+ cq->avoid_mem_cflct = info->avoid_mem_cflct;
+ IRDMA_RING_INIT(cq->cq_ring, cq->cq_size);
+ cq->polarity = 1;
+ cq->ops = iw_cq_ops;
+
+ return 0;
+}
+
+/**
+ * irdma_device_init_uk - setup routines for iwarp shared device
+ * @dev: iwarp shared (user and kernel)
+ */
+void irdma_device_init_uk(struct irdma_dev_uk *dev)
+{
+ dev->ops_uk = iw_device_uk_ops;
+}
+
+/**
+ * irdma_clean_cq - clean cq entries
+ * @q: completion context
+ * @cq: cq to clean
+ */
+void irdma_clean_cq(void *q, struct irdma_cq_uk *cq)
+{
+ __le64 *cqe;
+ __u64 qword3, comp_ctx;
+ __u32 cq_head;
+ __u8 polarity, temp;
+
+ cq_head = cq->cq_ring.head;
+ temp = cq->polarity;
+ do {
+ if (cq->avoid_mem_cflct)
+ cqe = ((struct irdma_extended_cqe *)(cq->cq_base))[cq_head].buf;
+ else
+ cqe = cq->cq_base[cq_head].buf;
+ get_64bit_val(cqe, 24, &qword3);
+ polarity = (__u8)RS_64(qword3, IRDMA_CQ_VALID);
+
+ if (polarity != temp)
+ break;
+
+ get_64bit_val(cqe, 8, &comp_ctx);
+ if ((void *)(uintptr_t)comp_ctx == q)
+ set_64bit_val(cqe, 8, 0);
+
+ cq_head = (cq_head + 1) % cq->cq_ring.size;
+ if (!cq_head)
+ temp ^= 1;
+ } while (true);
+}
+
+/**
+ * irdma_nop - post a nop
+ * @qp: hw qp ptr
+ * @wr_id: work request id
+ * @signaled: signaled for completion
+ * @post_sq: ring doorbell
+ */
+enum irdma_status_code irdma_nop(struct irdma_qp_uk *qp, __u64 wr_id,
+ bool signaled, bool post_sq)
+{
+ __le64 *wqe;
+ __u64 hdr;
+ __u32 wqe_idx;
+ struct irdma_post_sq_info info = {};
+
+ info.push_wqe = false;
+ info.wr_id = wr_id;
+ wqe = irdma_qp_get_next_send_wqe(qp, &wqe_idx, IRDMA_QP_WQE_MIN_QUANTA,
+ 0, &info);
+ if (!wqe)
+ return IRDMA_ERR_QP_TOOMANY_WRS_POSTED;
+
+ irdma_clr_wqes(qp, wqe_idx);
+
+ set_64bit_val(wqe, 0, 0);
+ set_64bit_val(wqe, 8, 0);
+ set_64bit_val(wqe, 16, 0);
+
+ hdr = LS_64(IRDMAQP_OP_NOP, IRDMAQPSQ_OPCODE) |
+ LS_64(signaled, IRDMAQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, IRDMAQPSQ_VALID);
+
+ udma_to_device_barrier(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, hdr);
+ if (post_sq)
+ irdma_qp_post_wr(qp);
+
+ return 0;
+}
+
+/**
+ * irdma_fragcnt_to_quanta_sq - calculate quanta based on fragment count for SQ
+ * @frag_cnt: number of fragments
+ * @quanta: quanta for frag_cnt
+ */
+enum irdma_status_code irdma_fragcnt_to_quanta_sq(__u32 frag_cnt, __u16 *quanta)
+{
+ switch (frag_cnt) {
+ case 0:
+ case 1:
+ *quanta = IRDMA_QP_WQE_MIN_QUANTA;
+ break;
+ case 2:
+ case 3:
+ *quanta = 2;
+ break;
+ case 4:
+ case 5:
+ *quanta = 3;
+ break;
+ case 6:
+ case 7:
+ *quanta = 4;
+ break;
+ case 8:
+ case 9:
+ *quanta = 5;
+ break;
+ case 10:
+ case 11:
+ *quanta = 6;
+ break;
+ case 12:
+ case 13:
+ *quanta = 7;
+ break;
+ case 14:
+ case 15: /* when immediate data is present */
+ *quanta = 8;
+ break;
+ default:
+ return IRDMA_ERR_INVALID_FRAG_COUNT;
+ }
+
+ return 0;
+}
+
+/**
+ * irdma_fragcnt_to_wqesize_rq - calculate wqe size based on fragment count for RQ
+ * @frag_cnt: number of fragments
+ * @wqe_size: size in bytes given frag_cnt
+ */
+enum irdma_status_code irdma_fragcnt_to_wqesize_rq(__u32 frag_cnt, __u16 *wqe_size)
+{
+ switch (frag_cnt) {
+ case 0:
+ case 1:
+ *wqe_size = 32;
+ break;
+ case 2:
+ case 3:
+ *wqe_size = 64;
+ break;
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ *wqe_size = 128;
+ break;
+ case 8:
+ case 9:
+ case 10:
+ case 11:
+ case 12:
+ case 13:
+ case 14:
+ *wqe_size = 256;
+ break;
+ default:
+ return IRDMA_ERR_INVALID_FRAG_COUNT;
+ }
+
+ return 0;
+}
--
1.8.3.1
