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+/*******************************************************************************
+*
+* Copyright (c) 2015 Intel Corporation. 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
+* OpenFabrics.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 "i40iw_osdep.h"
+#include "i40iw_status.h"
+#include "i40iw_d.h"
+#include "i40iw_user.h"
+#include "i40iw_register.h"
+
+static u32 nop_signature = 0x55550000;
+
+/**
+ * i40iw_nop_1 - insert a nop wqe and move head. no post work
+ * @qp: hw qp ptr
+ */
+static enum i40iw_status_code i40iw_nop_1(struct i40iw_qp_uk *qp)
+{
+ u64 header, *wqe;
+ u64 *wqe_0 = NULL;
+ u32 wqe_idx, peek_head;
+ bool signaled = false;
+
+ if (!qp->sq_ring.head)
+ return I40IW_ERR_PARAM;
+
+ wqe_idx = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+ wqe = &qp->sq_base[wqe_idx << 2];
+ peek_head = (qp->sq_ring.head + 1) % qp->sq_ring.size;
+ wqe_0 = &qp->sq_base[peek_head << 2];
+ if (peek_head)
+ wqe_0[3] = LS_64(!qp->swqe_polarity, I40IWQPSQ_VALID);
+ else
+ wqe_0[3] = LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ set_64bit_val(wqe, 0, 0);
+ set_64bit_val(wqe, 8, 0);
+ set_64bit_val(wqe, 16, 0);
+
+ header = LS_64(I40IWQP_OP_NOP, I40IWQPSQ_OPCODE) |
+ LS_64(signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID) | nop_signature++;
+
+ wmb(); /* Memory barrier to ensure data is written before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+ return 0;
+}
+
+/**
+ * i40iw_qp_post_wr - post wr to hrdware
+ * @qp: hw qp ptr
+ */
+void i40iw_qp_post_wr(struct i40iw_qp_uk *qp)
+{
+ u64 temp;
+ u32 hw_sq_tail;
+ u32 sw_sq_head;
+
+ wmb(); /* make sure valid bit is written */
+
+ /* read the doorbell shadow area */
+ get_64bit_val(qp->shadow_area, 0, &temp);
+
+ rmb(); /* make sure read is finished */
+
+ hw_sq_tail = (u32)RS_64(temp, I40IW_QP_DBSA_HW_SQ_TAIL);
+ sw_sq_head = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+ 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->wqe_alloc_reg, qp->qp_id);
+ }
+ } else 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->wqe_alloc_reg, qp->qp_id);
+ }
+ }
+ }
+
+ qp->initial_ring.head = qp->sq_ring.head;
+}
+
+/**
+ * i40iw_qp_ring_push_db - ring qp doorbell
+ * @qp: hw qp ptr
+ * @wqe_idx: wqe index
+ */
+static void i40iw_qp_ring_push_db(struct i40iw_qp_uk *qp, u32 wqe_idx)
+{
+ set_32bit_val(qp->push_db, 0, LS_32((wqe_idx >> 2), I40E_PFPE_WQEALLOC_WQE_DESC_INDEX) | qp->qp_id);
+ qp->initial_ring.head = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+}
+
+/**
+ * i40iw_qp_get_next_send_wqe - return next wqe ptr
+ * @qp: hw qp ptr
+ * @wqe_idx: return wqe index
+ * @wqe_size: size of sq wqe
+ */
+u64 *i40iw_qp_get_next_send_wqe(struct i40iw_qp_uk *qp,
+ u32 *wqe_idx,
+ u8 wqe_size)
+{
+ u64 *wqe = NULL;
+ u64 wqe_ptr;
+ u32 peek_head = 0;
+ u16 offset;
+ enum i40iw_status_code ret_code = 0;
+ u8 nop_wqe_cnt = 0, i;
+ u64 *wqe_0 = NULL;
+
+ *wqe_idx = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+
+ if (!*wqe_idx)
+ qp->swqe_polarity = !qp->swqe_polarity;
+ wqe_ptr = (uintptr_t)&qp->sq_base[*wqe_idx << 2];
+ offset = (u16)(wqe_ptr) & 0x7F;
+ if ((offset + wqe_size) > I40IW_QP_WQE_MAX_SIZE) {
+ nop_wqe_cnt = (u8)(I40IW_QP_WQE_MAX_SIZE - offset) / I40IW_QP_WQE_MIN_SIZE;
+ for (i = 0; i < nop_wqe_cnt; i++) {
+ i40iw_nop_1(qp);
+ I40IW_RING_MOVE_HEAD(qp->sq_ring, ret_code);
+ if (ret_code)
+ return NULL;
+ }
+
+ *wqe_idx = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+ if (!*wqe_idx)
+ qp->swqe_polarity = !qp->swqe_polarity;
+ }
+ for (i = 0; i < wqe_size / I40IW_QP_WQE_MIN_SIZE; i++) {
+ I40IW_RING_MOVE_HEAD(qp->sq_ring, ret_code);
+ if (ret_code)
+ return NULL;
+ }
+
+ wqe = &qp->sq_base[*wqe_idx << 2];
+
+ peek_head = I40IW_RING_GETCURRENT_HEAD(qp->sq_ring);
+ wqe_0 = &qp->sq_base[peek_head << 2];
+ if (peek_head & 0x3)
+ wqe_0[3] = LS_64(!qp->swqe_polarity, I40IWQPSQ_VALID);
+ return wqe;
+}
+
+/**
+ * i40iw_set_fragment - set fragment in wqe
+ * @wqe: wqe for setting fragment
+ * @offset: offset value
+ * @sge: sge length and stag
+ */
+static void i40iw_set_fragment(u64 *wqe, u32 offset, struct i40iw_sge *sge)
+{
+ if (sge) {
+ set_64bit_val(wqe, offset, LS_64(sge->tag_off, I40IWQPSQ_FRAG_TO));
+ set_64bit_val(wqe, (offset + 8),
+ (LS_64(sge->len, I40IWQPSQ_FRAG_LEN) |
+ LS_64(sge->stag, I40IWQPSQ_FRAG_STAG)));
+ }
+}
+
+/**
+ * i40iw_qp_get_next_recv_wqe - get next qp's rcv wqe
+ * @qp: hw qp ptr
+ * @wqe_idx: return wqe index
+ */
+u64 *i40iw_qp_get_next_recv_wqe(struct i40iw_qp_uk *qp, u32 *wqe_idx)
+{
+ u64 *wqe = NULL;
+ enum i40iw_status_code ret_code;
+
+ if (I40IW_RING_FULL_ERR(qp->rq_ring))
+ return NULL;
+
+ I40IW_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 qwords in one rq wqe */
+ wqe = &qp->rq_base[(*wqe_idx) * qp->rq_wqe_size_multiplier];
+
+ return wqe;
+}
+
+/**
+ * i40iw_rdma_write - rdma write operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_rdma_write(struct i40iw_qp_uk *qp,
+ struct i40iw_post_sq_info *info,
+ bool post_sq)
+{
+ u64 header;
+ u64 *wqe;
+ struct i40iw_rdma_write *op_info;
+ u32 i, wqe_idx;
+ u32 total_size = 0, byte_off;
+ enum i40iw_status_code ret_code;
+ bool read_fence = false;
+ u8 wqe_size;
+
+ op_info = &info->op.rdma_write;
+ if (op_info->num_lo_sges > qp->max_sq_frag_cnt)
+ return I40IW_ERR_INVALID_FRAG_COUNT;
+
+ for (i = 0; i < op_info->num_lo_sges; i++)
+ total_size += op_info->lo_sg_list[i].len;
+
+ if (total_size > I40IW_MAX_OUTBOUND_MESSAGE_SIZE)
+ return I40IW_ERR_QP_INVALID_MSG_SIZE;
+
+ read_fence |= info->read_fence;
+
+ ret_code = i40iw_fragcnt_to_wqesize_sq(op_info->num_lo_sges, &wqe_size);
+ if (ret_code)
+ return ret_code;
+
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ qp->sq_wrtrk_array[wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = total_size;
+ set_64bit_val(wqe, 16,
+ LS_64(op_info->rem_addr.tag_off, I40IWQPSQ_FRAG_TO));
+ if (!op_info->rem_addr.stag)
+ return I40IW_ERR_BAD_STAG;
+
+ header = LS_64(op_info->rem_addr.stag, I40IWQPSQ_REMSTAG) |
+ LS_64(I40IWQP_OP_RDMA_WRITE, I40IWQPSQ_OPCODE) |
+ LS_64((op_info->num_lo_sges > 1 ? (op_info->num_lo_sges - 1) : 0), I40IWQPSQ_ADDFRAGCNT) |
+ LS_64(read_fence, I40IWQPSQ_READFENCE) |
+ LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ i40iw_set_fragment(wqe, 0, op_info->lo_sg_list);
+
+ for (i = 1; i < op_info->num_lo_sges; i++) {
+ byte_off = 32 + (i - 1) * 16;
+ i40iw_set_fragment(wqe, byte_off, &op_info->lo_sg_list[i]);
+ }
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+
+ return 0;
+}
+
+/**
+ * i40iw_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 i40iw_status_code i40iw_rdma_read(struct i40iw_qp_uk *qp,
+ struct i40iw_post_sq_info *info,
+ bool inv_stag,
+ bool post_sq)
+{
+ u64 *wqe;
+ struct i40iw_rdma_read *op_info;
+ u64 header;
+ u32 wqe_idx;
+ enum i40iw_status_code ret_code;
+ u8 wqe_size;
+ bool local_fence = false;
+
+ op_info = &info->op.rdma_read;
+ ret_code = i40iw_fragcnt_to_wqesize_sq(1, &wqe_size);
+ if (ret_code)
+ return ret_code;
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ qp->sq_wrtrk_array[wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = op_info->lo_addr.len;
+ local_fence |= info->local_fence;
+
+ set_64bit_val(wqe, 16, LS_64(op_info->rem_addr.tag_off, I40IWQPSQ_FRAG_TO));
+ header = LS_64(op_info->rem_addr.stag, I40IWQPSQ_REMSTAG) |
+ LS_64((inv_stag ? I40IWQP_OP_RDMA_READ_LOC_INV : I40IWQP_OP_RDMA_READ), I40IWQPSQ_OPCODE) |
+ LS_64(info->read_fence, I40IWQPSQ_READFENCE) |
+ LS_64(local_fence, I40IWQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ i40iw_set_fragment(wqe, 0, &op_info->lo_addr);
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+
+ return 0;
+}
+
+/**
+ * i40iw_send - rdma send command
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @stag_to_inv: stag_to_inv value
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_send(struct i40iw_qp_uk *qp,
+ struct i40iw_post_sq_info *info,
+ u32 stag_to_inv,
+ bool post_sq)
+{
+ u64 *wqe;
+ struct i40iw_post_send *op_info;
+ u64 header;
+ u32 i, wqe_idx, total_size = 0, byte_off;
+ enum i40iw_status_code ret_code;
+ bool read_fence = false;
+ u8 wqe_size;
+
+ op_info = &info->op.send;
+ if (qp->max_sq_frag_cnt < op_info->num_sges)
+ return I40IW_ERR_INVALID_FRAG_COUNT;
+
+ for (i = 0; i < op_info->num_sges; i++)
+ total_size += op_info->sg_list[i].len;
+ ret_code = i40iw_fragcnt_to_wqesize_sq(op_info->num_sges, &wqe_size);
+ if (ret_code)
+ return ret_code;
+
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ read_fence |= info->read_fence;
+ qp->sq_wrtrk_array[wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = total_size;
+ set_64bit_val(wqe, 16, 0);
+ header = LS_64(stag_to_inv, I40IWQPSQ_REMSTAG) |
+ LS_64(info->op_type, I40IWQPSQ_OPCODE) |
+ LS_64((op_info->num_sges > 1 ? (op_info->num_sges - 1) : 0),
+ I40IWQPSQ_ADDFRAGCNT) |
+ LS_64(read_fence, I40IWQPSQ_READFENCE) |
+ LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ i40iw_set_fragment(wqe, 0, op_info->sg_list);
+
+ for (i = 1; i < op_info->num_sges; i++) {
+ byte_off = 32 + (i - 1) * 16;
+ i40iw_set_fragment(wqe, byte_off, &op_info->sg_list[i]);
+ }
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+
+ return 0;
+}
+
+/**
+ * i40iw_inline_rdma_write - inline rdma write operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_inline_rdma_write(struct i40iw_qp_uk *qp,
+ struct i40iw_post_sq_info *info,
+ bool post_sq)
+{
+ u64 *wqe;
+ u8 *dest, *src;
+ struct i40iw_inline_rdma_write *op_info;
+ u64 *push;
+ u64 header = 0;
+ u32 i, wqe_idx;
+ enum i40iw_status_code ret_code;
+ bool read_fence = false;
+ u8 wqe_size;
+
+ op_info = &info->op.inline_rdma_write;
+ if (op_info->len > I40IW_MAX_INLINE_DATA_SIZE)
+ return I40IW_ERR_INVALID_IMM_DATA_SIZE;
+
+ ret_code = i40iw_inline_data_size_to_wqesize(op_info->len, &wqe_size);
+ if (ret_code)
+ return ret_code;
+
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ read_fence |= info->read_fence;
+ qp->sq_wrtrk_array[wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = op_info->len;
+ set_64bit_val(wqe, 16,
+ LS_64(op_info->rem_addr.tag_off, I40IWQPSQ_FRAG_TO));
+
+ header = LS_64(op_info->rem_addr.stag, I40IWQPSQ_REMSTAG) |
+ LS_64(I40IWQP_OP_RDMA_WRITE, I40IWQPSQ_OPCODE) |
+ LS_64(op_info->len, I40IWQPSQ_INLINEDATALEN) |
+ LS_64(1, I40IWQPSQ_INLINEDATAFLAG) |
+ LS_64(((qp->push_db) ? 1 : 0), I40IWQPSQ_PUSHWQE) |
+ LS_64(read_fence, I40IWQPSQ_READFENCE) |
+ LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ dest = (u8 *)wqe;
+ src = (u8 *)(op_info->data);
+
+ if (op_info->len <= 16) {
+ for (i = 0; i < op_info->len; i++, src++, dest++)
+ *dest = *src;
+ } else {
+ for (i = 0; i < 16; i++, src++, dest++)
+ *dest = *src;
+ dest = (u8 *)wqe + 32;
+ for (; i < op_info->len; i++, src++, dest++)
+ *dest = *src;
+ }
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+
+ if (qp->push_db) {
+ push = (u64 *)(((uintptr_t)qp->push_wqe) + (wqe_idx & 0x3) * 0x20);
+ memcpy(push, wqe, (op_info->len > 16) ? op_info->len + 16 : 32);
+ i40iw_qp_ring_push_db(qp, wqe_idx);
+ } else {
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * i40iw_inline_send - inline send operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @stag_to_inv: remote stag
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_inline_send(struct i40iw_qp_uk *qp,
+ struct i40iw_post_sq_info *info,
+ u32 stag_to_inv,
+ bool post_sq)
+{
+ u64 *wqe;
+ u8 *dest, *src;
+ struct i40iw_post_inline_send *op_info;
+ u64 header;
+ u32 wqe_idx, i;
+ enum i40iw_status_code ret_code;
+ bool read_fence = false;
+ u8 wqe_size;
+ u64 *push;
+
+ op_info = &info->op.inline_send;
+ if (op_info->len > I40IW_MAX_INLINE_DATA_SIZE)
+ return I40IW_ERR_INVALID_IMM_DATA_SIZE;
+
+ ret_code = i40iw_inline_data_size_to_wqesize(op_info->len, &wqe_size);
+ if (ret_code)
+ return ret_code;
+
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, wqe_size);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ read_fence |= info->read_fence;
+
+ qp->sq_wrtrk_array[wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = op_info->len;
+ header = LS_64(stag_to_inv, I40IWQPSQ_REMSTAG) |
+ LS_64(info->op_type, I40IWQPSQ_OPCODE) |
+ LS_64(op_info->len, I40IWQPSQ_INLINEDATALEN) |
+ LS_64(1, I40IWQPSQ_INLINEDATAFLAG) |
+ LS_64(((qp->push_db) ? 1 : 0), I40IWQPSQ_PUSHWQE) |
+ LS_64(read_fence, I40IWQPSQ_READFENCE) |
+ LS_64(info->local_fence, I40IWQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ dest = (u8 *)wqe;
+ src = (u8 *)(op_info->data);
+
+ if (op_info->len <= 16) {
+ for (i = 0; i < op_info->len; i++, src++, dest++)
+ *dest = *src;
+ } else {
+ for (i = 0; i < 16; i++, src++, dest++)
+ *dest = *src;
+ dest = (u8 *)wqe + 32;
+ for (; i < op_info->len; i++, src++, dest++)
+ *dest = *src;
+ }
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+
+ if (qp->push_db) {
+ push = (u64 *)(((uintptr_t)qp->push_wqe) + (wqe_idx & 0x3) * 0x20);
+ memcpy(push, wqe, (op_info->len > 16) ? op_info->len + 16 : 32);
+ i40iw_qp_ring_push_db(qp, wqe_idx);
+ } else {
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+ }
+
+ return 0;
+}
+
+/**
+ * i40iw_stag_local_invalidate - stag invalidate operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_stag_local_invalidate(struct i40iw_qp_uk *qp,
+ struct i40iw_post_sq_info *info,
+ bool post_sq)
+{
+ u64 *wqe;
+ struct i40iw_inv_local_stag *op_info;
+ u64 header;
+ u32 wqe_idx;
+ bool local_fence = false;
+
+ op_info = &info->op.inv_local_stag;
+ local_fence = info->local_fence;
+
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, I40IW_QP_WQE_MIN_SIZE);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ qp->sq_wrtrk_array[wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = 0;
+ set_64bit_val(wqe, 0, 0);
+ set_64bit_val(wqe, 8,
+ LS_64(op_info->target_stag, I40IWQPSQ_LOCSTAG));
+ set_64bit_val(wqe, 16, 0);
+ header = LS_64(I40IW_OP_TYPE_INV_STAG, I40IWQPSQ_OPCODE) |
+ LS_64(info->read_fence, I40IWQPSQ_READFENCE) |
+ LS_64(local_fence, I40IWQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+
+ return 0;
+}
+
+/**
+ * i40iw_mw_bind - Memory Window bind operation
+ * @qp: hw qp ptr
+ * @info: post sq information
+ * @post_sq: flag to post sq
+ */
+static enum i40iw_status_code i40iw_mw_bind(struct i40iw_qp_uk *qp,
+ struct i40iw_post_sq_info *info,
+ bool post_sq)
+{
+ u64 *wqe;
+ struct i40iw_bind_window *op_info;
+ u64 header;
+ u32 wqe_idx;
+ bool local_fence = false;
+
+ op_info = &info->op.bind_window;
+
+ local_fence |= info->local_fence;
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, I40IW_QP_WQE_MIN_SIZE);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ qp->sq_wrtrk_array[wqe_idx].wrid = info->wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = 0;
+ set_64bit_val(wqe, 0, (uintptr_t)op_info->va);
+ set_64bit_val(wqe, 8,
+ LS_64(op_info->mr_stag, I40IWQPSQ_PARENTMRSTAG) |
+ LS_64(op_info->mw_stag, I40IWQPSQ_MWSTAG));
+ set_64bit_val(wqe, 16, op_info->bind_length);
+ header = LS_64(I40IW_OP_TYPE_BIND_MW, I40IWQPSQ_OPCODE) |
+ LS_64(((op_info->enable_reads << 2) |
+ (op_info->enable_writes << 3)),
+ I40IWQPSQ_STAGRIGHTS) |
+ LS_64((op_info->addressing_type == I40IW_ADDR_TYPE_VA_BASED ? 1 : 0),
+ I40IWQPSQ_VABASEDTO) |
+ LS_64(info->read_fence, I40IWQPSQ_READFENCE) |
+ LS_64(local_fence, I40IWQPSQ_LOCALFENCE) |
+ LS_64(info->signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+
+ return 0;
+}
+
+/**
+ * i40iw_post_receive - post receive wqe
+ * @qp: hw qp ptr
+ * @info: post rq information
+ */
+static enum i40iw_status_code i40iw_post_receive(struct i40iw_qp_uk *qp,
+ struct i40iw_post_rq_info *info)
+{
+ u64 *wqe;
+ u64 header;
+ u32 total_size = 0, wqe_idx, i, byte_off;
+
+ if (qp->max_rq_frag_cnt < info->num_sges)
+ return I40IW_ERR_INVALID_FRAG_COUNT;
+ for (i = 0; i < info->num_sges; i++)
+ total_size += info->sg_list[i].len;
+ wqe = i40iw_qp_get_next_recv_wqe(qp, &wqe_idx);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ qp->rq_wrid_array[wqe_idx] = info->wr_id;
+ set_64bit_val(wqe, 16, 0);
+
+ header = LS_64((info->num_sges > 1 ? (info->num_sges - 1) : 0),
+ I40IWQPSQ_ADDFRAGCNT) |
+ LS_64(qp->rwqe_polarity, I40IWQPSQ_VALID);
+
+ i40iw_set_fragment(wqe, 0, info->sg_list);
+
+ for (i = 1; i < info->num_sges; i++) {
+ byte_off = 32 + (i - 1) * 16;
+ i40iw_set_fragment(wqe, byte_off, &info->sg_list[i]);
+ }
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+
+ return 0;
+}
+
+/**
+ * i40iw_cq_request_notification - cq notification request (door bell)
+ * @cq: hw cq
+ * @cq_notify: notification type
+ */
+static enum i40iw_status_code i40iw_cq_request_notification(struct i40iw_cq_uk *cq,
+ enum i40iw_completion_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, I40IW_CQ_DBSA_ARM_SEQ_NUM);
+ arm_seq_num++;
+
+ sw_cq_sel = (u16)RS_64(temp_val, I40IW_CQ_DBSA_SW_CQ_SELECT);
+ arm_next_se = (u8)RS_64(temp_val, I40IW_CQ_DBSA_ARM_NEXT_SE);
+ arm_next_se |= 1;
+ if (cq_notify == IW_CQ_COMPL_EVENT)
+ arm_next = 1;
+ temp_val = LS_64(arm_seq_num, I40IW_CQ_DBSA_ARM_SEQ_NUM) |
+ LS_64(sw_cq_sel, I40IW_CQ_DBSA_SW_CQ_SELECT) |
+ LS_64(arm_next_se, I40IW_CQ_DBSA_ARM_NEXT_SE) |
+ LS_64(arm_next, I40IW_CQ_DBSA_ARM_NEXT);
+
+ set_64bit_val(cq->shadow_area, 32, temp_val);
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ db_wr32(cq->cqe_alloc_reg, cq->cq_id);
+
+ return 0;
+}
+
+/**
+ * i40iw_cq_post_entries - update tail in shadow memory
+ * @cq: hw cq
+ * @count: # of entries processed
+ */
+static enum i40iw_status_code i40iw_cq_post_entries(struct i40iw_cq_uk *cq,
+ u8 count)
+{
+ I40IW_RING_MOVE_TAIL_BY_COUNT(cq->cq_ring, count);
+ set_64bit_val(cq->shadow_area, 0,
+ I40IW_RING_GETCURRENT_HEAD(cq->cq_ring));
+ return 0;
+}
+
+/**
+ * i40iw_cq_poll_completion - get cq completion info
+ * @cq: hw cq
+ * @info: cq poll information returned
+ * @post_cq: update cq tail
+ */
+static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq,
+ struct i40iw_cq_poll_info *info,
+ bool post_cq)
+{
+ u64 comp_ctx, qword0, qword2, qword3, wqe_qword;
+ u64 *cqe, *sw_wqe;
+ struct i40iw_qp_uk *qp;
+ struct i40iw_ring *pring = NULL;
+ u32 wqe_idx, q_type, array_idx = 0;
+ enum i40iw_status_code ret_code = 0;
+ enum i40iw_status_code ret_code2 = 0;
+ bool valid_bit, move_cq_head = true;
+ u8 addl_frag_cnt, addl_wqes = 0;
+
+ if (cq->avoid_mem_cflct)
+ cqe = (u64 *)I40IW_GET_CURRENT_EXTENDED_CQ_ELEMENT(cq);
+ else
+ cqe = (u64 *)I40IW_GET_CURRENT_CQ_ELEMENT(cq);
+
+ get_64bit_val(cqe, 24, &qword3);
+ valid_bit = (bool)RS_64(qword3, I40IW_CQ_VALID);
+
+ if (valid_bit != cq->polarity)
+ return I40IW_ERR_QUEUE_EMPTY;
+
+ q_type = (u8)RS_64(qword3, I40IW_CQ_SQ);
+ info->error = (bool)RS_64(qword3, I40IW_CQ_ERROR);
+ info->push_dropped = (bool)RS_64(qword3, I40IWCQ_PSHDROP);
+ if (info->error) {
+ info->comp_status = I40IW_COMPL_STATUS_FLUSHED;
+ info->major_err = (bool)RS_64(qword3, I40IW_CQ_MAJERR);
+ info->minor_err = (bool)RS_64(qword3, I40IW_CQ_MINERR);
+ } else {
+ info->comp_status = I40IW_COMPL_STATUS_SUCCESS;
+ }
+
+ get_64bit_val(cqe, 0, &qword0);
+ get_64bit_val(cqe, 16, &qword2);
+
+ info->tcp_seq_num = (u8)RS_64(qword0, I40IWCQ_TCPSEQNUM);
+
+ info->qp_id = (u32)RS_64(qword2, I40IWCQ_QPID);
+
+ get_64bit_val(cqe, 8, &comp_ctx);
+
+ info->solicited_event = (bool)RS_64(qword3, I40IWCQ_SOEVENT);
+ info->is_srq = (bool)RS_64(qword3, I40IWCQ_SRQ);
+
+ qp = (struct i40iw_qp_uk *)(unsigned long)comp_ctx;
+ wqe_idx = (u32)RS_64(qword3, I40IW_CQ_WQEIDX);
+ info->qp_handle = (i40iw_qp_handle)(unsigned long)qp;
+
+ if (q_type == I40IW_CQE_QTYPE_RQ) {
+ array_idx = (wqe_idx * 4) / qp->rq_wqe_size_multiplier;
+ if (info->comp_status == I40IW_COMPL_STATUS_FLUSHED) {
+ 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->op_type = I40IW_OP_TYPE_REC;
+ if (qword3 & I40IWCQ_STAG_MASK) {
+ info->stag_invalid_set = true;
+ info->inv_stag = (u32)RS_64(qword2, I40IWCQ_INVSTAG);
+ } else {
+ info->stag_invalid_set = false;
+ }
+ info->bytes_xfered = (u32)RS_64(qword0, I40IWCQ_PAYLDLEN);
+ I40IW_RING_SET_TAIL(qp->rq_ring, array_idx + 1);
+ pring = &qp->rq_ring;
+ } else {
+ if (info->comp_status != I40IW_COMPL_STATUS_FLUSHED) {
+ info->wr_id = qp->sq_wrtrk_array[wqe_idx].wrid;
+ info->bytes_xfered = qp->sq_wrtrk_array[wqe_idx].wr_len;
+
+ info->op_type = (u8)RS_64(qword3, I40IWCQ_OP);
+ sw_wqe = &qp->sq_base[wqe_idx << 2];
+ get_64bit_val(sw_wqe, 24, &wqe_qword);
+ addl_frag_cnt =
+ (u8)RS_64(wqe_qword, I40IWQPSQ_ADDFRAGCNT);
+ i40iw_fragcnt_to_wqesize_sq((addl_frag_cnt + 1), &addl_wqes);
+
+ addl_wqes = (addl_wqes / I40IW_QP_WQE_MIN_SIZE);
+ I40IW_RING_SET_TAIL(qp->sq_ring, (wqe_idx + addl_wqes));
+ } else {
+ do {
+ u8 op_type;
+ u32 tail;
+
+ tail = qp->sq_ring.tail;
+ sw_wqe = &qp->sq_base[tail << 2];
+ get_64bit_val(sw_wqe, 24, &wqe_qword);
+ op_type = (u8)RS_64(wqe_qword, I40IWQPSQ_OPCODE);
+ info->op_type = op_type;
+ addl_frag_cnt = (u8)RS_64(wqe_qword, I40IWQPSQ_ADDFRAGCNT);
+ i40iw_fragcnt_to_wqesize_sq((addl_frag_cnt + 1), &addl_wqes);
+ addl_wqes = (addl_wqes / I40IW_QP_WQE_MIN_SIZE);
+ I40IW_RING_SET_TAIL(qp->sq_ring, (tail + addl_wqes));
+ if (op_type != I40IWQP_OP_NOP) {
+ info->wr_id = qp->sq_wrtrk_array[tail].wrid;
+ info->bytes_xfered = qp->sq_wrtrk_array[tail].wr_len;
+ break;
+ }
+ } while (1);
+ }
+ pring = &qp->sq_ring;
+ }
+
+ ret_code = 0;
+
+ if ((!ret_code) &&
+ (info->comp_status == I40IW_COMPL_STATUS_FLUSHED))
+ if (pring && (I40IW_RING_MORE_WORK(*pring)))
+ move_cq_head = false;
+
+ if (move_cq_head) {
+ I40IW_RING_MOVE_HEAD(cq->cq_ring, ret_code2);
+
+ if (ret_code2 && !ret_code)
+ ret_code = ret_code2;
+
+ if (I40IW_RING_GETCURRENT_HEAD(cq->cq_ring) == 0)
+ cq->polarity = !cq->polarity;
+
+ if (post_cq) {
+ I40IW_RING_MOVE_TAIL(cq->cq_ring);
+ set_64bit_val(cq->shadow_area, 0,
+ I40IW_RING_GETCURRENT_HEAD(cq->cq_ring));
+ }
+ } else {
+ if (info->is_srq)
+ return ret_code;
+ qword3 &= ~I40IW_CQ_WQEIDX_MASK;
+ qword3 |= LS_64(pring->tail, I40IW_CQ_WQEIDX);
+ set_64bit_val(cqe, 24, qword3);
+ }
+
+ return ret_code;
+}
+
+/**
+ * i40iw_get_wqe_shift - get shift count for maximum wqe size
+ * @wqdepth: depth of wq required.
+ * @sge: Maximum Scatter Gather Elements wqe
+ * @shift: Returns the shift needed based on sge
+ *
+ * Shift can be used to left shift the wqe size based on sge.
+ * If sge, == 1, shift =0 (wqe_size of 32 bytes), for sge=2 and 3, shift =1
+ * (64 bytes wqes) and 2 otherwise (128 bytes wqe).
+ */
+enum i40iw_status_code i40iw_get_wqe_shift(u32 wqdepth, u8 sge, u8 *shift)
+{
+ u32 size;
+
+ *shift = 0;
+ if (sge > 1)
+ *shift = (sge < 4) ? 1 : 2;
+
+ /* check if wqdepth is multiple of 2 or not */
+
+ if ((wqdepth < I40IWQP_SW_MIN_WQSIZE) || (wqdepth & (wqdepth - 1)))
+ return I40IW_ERR_INVALID_SIZE;
+
+ size = wqdepth << *shift; /* multiple of 32 bytes count */
+ if (size > I40IWQP_SW_MAX_WQSIZE)
+ return I40IW_ERR_INVALID_SIZE;
+ return 0;
+}
+
+static struct i40iw_qp_uk_ops iw_qp_uk_ops = {
+ i40iw_qp_post_wr,
+ i40iw_qp_ring_push_db,
+ i40iw_rdma_write,
+ i40iw_rdma_read,
+ i40iw_send,
+ i40iw_inline_rdma_write,
+ i40iw_inline_send,
+ i40iw_stag_local_invalidate,
+ i40iw_mw_bind,
+ i40iw_post_receive,
+ i40iw_nop
+};
+
+static struct i40iw_cq_ops iw_cq_ops = {
+ i40iw_cq_request_notification,
+ i40iw_cq_poll_completion,
+ i40iw_cq_post_entries,
+ i40iw_clean_cq
+};
+
+static struct i40iw_device_uk_ops iw_device_uk_ops = {
+ i40iw_cq_uk_init,
+ i40iw_qp_uk_init,
+};
+
+/**
+ * i40iw_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. If srq is used,
+ * then rq_base will point to one rq wqe only (not the whole
+ * array of wqes)
+ */
+enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp,
+ struct i40iw_qp_uk_init_info *info)
+{
+ enum i40iw_status_code ret_code = 0;
+ u32 sq_ring_size;
+ u8 sqshift, rqshift;
+
+ if (info->max_sq_frag_cnt > I40IW_MAX_WQ_FRAGMENT_COUNT)
+ return I40IW_ERR_INVALID_FRAG_COUNT;
+
+ if (info->max_rq_frag_cnt > I40IW_MAX_WQ_FRAGMENT_COUNT)
+ return I40IW_ERR_INVALID_FRAG_COUNT;
+ ret_code = i40iw_get_wqe_shift(info->sq_size, info->max_sq_frag_cnt, &sqshift);
+ if (ret_code)
+ return ret_code;
+
+ ret_code = i40iw_get_wqe_shift(info->rq_size, info->max_rq_frag_cnt, &rqshift);
+ if (ret_code)
+ return ret_code;
+
+ qp->sq_base = info->sq;
+ qp->rq_base = info->rq;
+ 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_reg = info->wqe_alloc_reg;
+ qp->qp_id = info->qp_id;
+
+ qp->sq_size = info->sq_size;
+ qp->push_db = info->push_db;
+ qp->push_wqe = info->push_wqe;
+
+ qp->max_sq_frag_cnt = info->max_sq_frag_cnt;
+ sq_ring_size = qp->sq_size << sqshift;
+
+ I40IW_RING_INIT(qp->sq_ring, sq_ring_size);
+ I40IW_RING_INIT(qp->initial_ring, sq_ring_size);
+ I40IW_RING_MOVE_HEAD(qp->sq_ring, ret_code);
+ I40IW_RING_MOVE_TAIL(qp->sq_ring);
+ I40IW_RING_MOVE_HEAD(qp->initial_ring, ret_code);
+ qp->swqe_polarity = 1;
+ qp->swqe_polarity_deferred = 1;
+ qp->rwqe_polarity = 0;
+
+ if (!qp->use_srq) {
+ qp->rq_size = info->rq_size;
+ qp->max_rq_frag_cnt = info->max_rq_frag_cnt;
+ qp->rq_wqe_size = rqshift;
+ I40IW_RING_INIT(qp->rq_ring, qp->rq_size);
+ qp->rq_wqe_size_multiplier = 4 << rqshift;
+ } else {
+ qp->rq_size = 0;
+ qp->rq_wqe_size = 0;
+ qp->rq_wqe_size_multiplier = 0;
+ }
+ qp->ops = iw_qp_uk_ops;
+
+ return ret_code;
+}
+
+/**
+ * i40iw_cq_uk_init - initialize shared cq (user and kernel)
+ * @cq: hw cq
+ * @info: hw cq initialization info
+ */
+enum i40iw_status_code i40iw_cq_uk_init(struct i40iw_cq_uk *cq,
+ struct i40iw_cq_uk_init_info *info)
+{
+ if ((info->cq_size < I40IW_MIN_CQ_SIZE) ||
+ (info->cq_size > I40IW_MAX_CQ_SIZE))
+ return I40IW_ERR_INVALID_SIZE;
+ cq->cq_base = (struct i40iw_cqe *)info->cq_base;
+ cq->cq_id = info->cq_id;
+ cq->cq_size = info->cq_size;
+ cq->cqe_alloc_reg = info->cqe_alloc_reg;
+ cq->shadow_area = info->shadow_area;
+ cq->avoid_mem_cflct = info->avoid_mem_cflct;
+
+ I40IW_RING_INIT(cq->cq_ring, cq->cq_size);
+ cq->polarity = 1;
+ cq->ops = iw_cq_ops;
+
+ return 0;
+}
+
+/**
+ * i40iw_device_init_uk - setup routines for iwarp shared device
+ * @dev: iwarp shared (user and kernel)
+ */
+void i40iw_device_init_uk(struct i40iw_dev_uk *dev)
+{
+ dev->ops_uk = iw_device_uk_ops;
+}
+
+/**
+ * i40iw_clean_cq - clean cq entries
+ * @ queue completion context
+ * @cq: cq to clean
+ */
+enum i40iw_status_code i40iw_clean_cq(void *queue, struct i40iw_cq_uk *cq)
+{
+ u64 *cqe;
+ u64 qword3, comp_ctx;
+ u32 cq_head;
+ bool polarity, valid_bit;
+
+ cq_head = cq->cq_ring.head;
+ polarity = cq->polarity;
+ do {
+ if (cq->avoid_mem_cflct)
+ cqe = (u64 *)&(((struct i40iw_extended_cqe *)cq->cq_base)[cq_head]);
+ else
+ cqe = (u64 *)&cq->cq_base[cq_head];
+ get_64bit_val(cqe, 24, &qword3);
+ valid_bit = (bool)RS_64(qword3, I40IW_CQ_VALID);
+
+ if (valid_bit != polarity)
+ return 0;
+
+ get_64bit_val(cqe, 8, &comp_ctx);
+ if ((void *)(unsigned long)comp_ctx == queue)
+ set_64bit_val(cqe, 8, 0);
+
+ cq_head = (cq_head + 1) % cq->cq_ring.size;
+ if (!cq_head)
+ polarity = !polarity;
+ } while (true);
+
+ return 0;
+}
+
+/**
+ * i40iw_nop - send a nop
+ * @qp: hw qp ptr
+ * @wr_id: work request id
+ * @signaled: flag if signaled for completion
+ * @post_sq: flag to post sq
+ */
+enum i40iw_status_code i40iw_nop(struct i40iw_qp_uk *qp,
+ u64 wr_id,
+ bool signaled,
+ bool post_sq)
+{
+ u64 header, *wqe;
+ u32 wqe_idx;
+
+ wqe = i40iw_qp_get_next_send_wqe(qp, &wqe_idx, I40IW_QP_WQE_MIN_SIZE);
+ if (!wqe)
+ return I40IW_ERR_QP_TOOMANY_WRS_POSTED;
+
+ qp->sq_wrtrk_array[wqe_idx].wrid = wr_id;
+ qp->sq_wrtrk_array[wqe_idx].wr_len = 0;
+ set_64bit_val(wqe, 0, 0);
+ set_64bit_val(wqe, 8, 0);
+ set_64bit_val(wqe, 16, 0);
+
+ header = LS_64(I40IWQP_OP_NOP, I40IWQPSQ_OPCODE) |
+ LS_64(signaled, I40IWQPSQ_SIGCOMPL) |
+ LS_64(qp->swqe_polarity, I40IWQPSQ_VALID);
+
+ wmb(); /* make sure WQE is populated before valid bit is set */
+
+ set_64bit_val(wqe, 24, header);
+ if (post_sq)
+ i40iw_qp_post_wr(qp);
+
+ return 0;
+}
+
+/**
+ * i40iw_fragcnt_to_wqesize_sq - calculate wqe size based on fragment count for SQ
+ * @frag_cnt: number of fragments
+ * @wqe_size: size of sq wqe returned
+ */
+enum i40iw_status_code i40iw_fragcnt_to_wqesize_sq(u8 frag_cnt, u8 *wqe_size)
+{
+ switch (frag_cnt) {
+ case 0:
+ case 1:
+ *wqe_size = I40IW_QP_WQE_MIN_SIZE;
+ break;
+ case 2:
+ case 3:
+ *wqe_size = 64;
+ break;
+ case 4:
+ case 5:
+ *wqe_size = 96;
+ break;
+ case 6:
+ case 7:
+ *wqe_size = 128;
+ break;
+ default:
+ return I40IW_ERR_INVALID_FRAG_COUNT;
+ }
+
+ return 0;
+}
+
+/**
+ * i40iw_fragcnt_to_wqesize_rq - calculate wqe size based on fragment count for RQ
+ * @frag_cnt: number of fragments
+ * @wqe_size: size of rq wqe returned
+ */
+enum i40iw_status_code i40iw_fragcnt_to_wqesize_rq(u8 frag_cnt, u8 *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;
+ default:
+ return I40IW_ERR_INVALID_FRAG_COUNT;
+ }
+
+ return 0;
+}
+
+/**
+ * i40iw_inline_data_size_to_wqesize - based on inline data, wqe size
+ * @data_size: data size for inline
+ * @wqe_size: size of sq wqe returned
+ */
+enum i40iw_status_code i40iw_inline_data_size_to_wqesize(u32 data_size,
+ u8 *wqe_size)
+{
+ if (data_size > I40IW_MAX_INLINE_DATA_SIZE)
+ return I40IW_ERR_INVALID_IMM_DATA_SIZE;
+
+ if (data_size <= 16)
+ *wqe_size = I40IW_QP_WQE_MIN_SIZE;
+ else if (data_size <= 48)
+ *wqe_size = 64;
+ else if (data_size <= 80)
+ *wqe_size = 96;
+ else
+ *wqe_size = 128;
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,438 @@
+/*******************************************************************************
+*
+* Copyright (c) 2015 Intel Corporation. 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
+* OpenFabrics.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 I40IW_USER_H
+#define I40IW_USER_H
+
+enum i40iw_device_capabilities_const {
+ I40IW_WQE_SIZE = 4,
+ I40IW_CQP_WQE_SIZE = 8,
+ I40IW_CQE_SIZE = 4,
+ I40IW_EXTENDED_CQE_SIZE = 8,
+ I40IW_AEQE_SIZE = 2,
+ I40IW_CEQE_SIZE = 1,
+ I40IW_CQP_CTX_SIZE = 8,
+ I40IW_SHADOW_AREA_SIZE = 8,
+ I40IW_CEQ_MAX_COUNT = 256,
+ I40IW_QUERY_FPM_BUF_SIZE = 128,
+ I40IW_COMMIT_FPM_BUF_SIZE = 128,
+ I40IW_MIN_IW_QP_ID = 1,
+ I40IW_MAX_IW_QP_ID = 262143,
+ I40IW_MIN_CEQID = 0,
+ I40IW_MAX_CEQID = 256,
+ I40IW_MIN_CQID = 0,
+ I40IW_MAX_CQID = 131071,
+ I40IW_MIN_AEQ_ENTRIES = 1,
+ I40IW_MAX_AEQ_ENTRIES = 524287,
+ I40IW_MIN_CEQ_ENTRIES = 1,
+ I40IW_MAX_CEQ_ENTRIES = 131071,
+ I40IW_MIN_CQ_SIZE = 1,
+ I40IW_MAX_CQ_SIZE = 1048575,
+ I40IW_MAX_AEQ_ALLOCATE_COUNT = 255,
+ I40IW_DB_ID_ZERO = 0,
+ I40IW_MAX_WQ_FRAGMENT_COUNT = 6,
+ I40IW_MAX_SGE_RD = 1,
+ I40IW_MAX_OUTBOUND_MESSAGE_SIZE = 2147483647,
+ I40IW_MAX_INBOUND_MESSAGE_SIZE = 2147483647,
+ I40IW_MAX_PUSH_PAGE_COUNT = 4096,
+ I40IW_MAX_PE_ENABLED_VF_COUNT = 32,
+ I40IW_MAX_VF_FPM_ID = 47,
+ I40IW_MAX_VF_PER_PF = 127,
+ I40IW_MAX_SQ_PAYLOAD_SIZE = 2145386496,
+ I40IW_MAX_INLINE_DATA_SIZE = 112,
+ I40IW_MAX_PUSHMODE_INLINE_DATA_SIZE = 112,
+ I40IW_MAX_IRD_SIZE = 32,
+ I40IW_QPCTX_ENCD_MAXIRD = 3,
+ I40IW_MAX_WQ_ENTRIES = 2048,
+ I40IW_MAX_ORD_SIZE = 32,
+ I40IW_Q2_BUFFER_SIZE = (248 + 100),
+ I40IW_QP_CTX_SIZE = 248
+};
+
+#define i40iw_handle void *
+#define i40iw_adapter_handle i40iw_handle
+#define i40iw_qp_handle i40iw_handle
+#define i40iw_cq_handle i40iw_handle
+#define i40iw_srq_handle i40iw_handle
+#define i40iw_pd_id i40iw_handle
+#define i40iw_stag_handle i40iw_handle
+#define i40iw_stag_index u32
+#define i40iw_stag u32
+#define i40iw_stag_key u8
+
+#define i40iw_tagged_offset u64
+#define i40iw_access_privileges u32
+#define i40iw_physical_fragment u64
+#define i40iw_address_list u64 *
+
+#define I40IW_CREATE_STAG(index, key) (((index) << 8) + (key))
+
+#define I40IW_STAG_KEY_FROM_STAG(stag) ((stag) && 0x000000FF)
+
+#define I40IW_STAG_INDEX_FROM_STAG(stag) (((stag) && 0xFFFFFF00) >> 8)
+
+struct i40iw_qp_uk;
+struct i40iw_cq_uk;
+struct i40iw_srq_uk;
+struct i40iw_qp_uk_init_info;
+struct i40iw_cq_uk_init_info;
+struct i40iw_srq_uk_init_info;
+
+struct i40iw_sge {
+ i40iw_tagged_offset tag_off;
+ u32 len;
+ i40iw_stag stag;
+};
+
+#define i40iw_sgl struct i40iw_sge *
+
+struct i40iw_ring {
+ u32 head;
+ u32 tail;
+ u32 size;
+};
+
+struct i40iw_cqe {
+ u64 buf[I40IW_CQE_SIZE];
+};
+
+struct i40iw_extended_cqe {
+ u64 buf[I40IW_EXTENDED_CQE_SIZE];
+};
+
+struct i40iw_wqe {
+ u64 buf[I40IW_WQE_SIZE];
+};
+
+struct i40iw_qp_uk_ops;
+
+enum i40iw_addressing_type {
+ I40IW_ADDR_TYPE_ZERO_BASED = 0,
+ I40IW_ADDR_TYPE_VA_BASED = 1,
+};
+
+#define I40IW_ACCESS_FLAGS_LOCALREAD 0x01
+#define I40IW_ACCESS_FLAGS_LOCALWRITE 0x02
+#define I40IW_ACCESS_FLAGS_REMOTEREAD_ONLY 0x04
+#define I40IW_ACCESS_FLAGS_REMOTEREAD 0x05
+#define I40IW_ACCESS_FLAGS_REMOTEWRITE_ONLY 0x08
+#define I40IW_ACCESS_FLAGS_REMOTEWRITE 0x0a
+#define I40IW_ACCESS_FLAGS_BIND_WINDOW 0x10
+#define I40IW_ACCESS_FLAGS_ALL 0x1F
+
+#define I40IW_OP_TYPE_RDMA_WRITE 0
+#define I40IW_OP_TYPE_RDMA_READ 1
+#define I40IW_OP_TYPE_SEND 3
+#define I40IW_OP_TYPE_SEND_INV 4
+#define I40IW_OP_TYPE_SEND_SOL 5
+#define I40IW_OP_TYPE_SEND_SOL_INV 6
+#define I40IW_OP_TYPE_REC 7
+#define I40IW_OP_TYPE_BIND_MW 8
+#define I40IW_OP_TYPE_FAST_REG_NSMR 9
+#define I40IW_OP_TYPE_INV_STAG 10
+#define I40IW_OP_TYPE_RDMA_READ_INV_STAG 11
+#define I40IW_OP_TYPE_NOP 12
+
+enum i40iw_completion_status {
+ I40IW_COMPL_STATUS_SUCCESS = 0,
+ I40IW_COMPL_STATUS_FLUSHED,
+ I40IW_COMPL_STATUS_INVALID_WQE,
+ I40IW_COMPL_STATUS_QP_CATASTROPHIC,
+ I40IW_COMPL_STATUS_REMOTE_TERMINATION,
+ I40IW_COMPL_STATUS_INVALID_STAG,
+ I40IW_COMPL_STATUS_BASE_BOUND_VIOLATION,
+ I40IW_COMPL_STATUS_ACCESS_VIOLATION,
+ I40IW_COMPL_STATUS_INVALID_PD_ID,
+ I40IW_COMPL_STATUS_WRAP_ERROR,
+ I40IW_COMPL_STATUS_STAG_INVALID_PDID,
+ I40IW_COMPL_STATUS_RDMA_READ_ZERO_ORD,
+ I40IW_COMPL_STATUS_QP_NOT_PRIVLEDGED,
+ I40IW_COMPL_STATUS_STAG_NOT_INVALID,
+ I40IW_COMPL_STATUS_INVALID_PHYS_BUFFER_SIZE,
+ I40IW_COMPL_STATUS_INVALID_PHYS_BUFFER_ENTRY,
+ I40IW_COMPL_STATUS_INVALID_FBO,
+ I40IW_COMPL_STATUS_INVALID_LENGTH,
+ I40IW_COMPL_STATUS_INVALID_ACCESS,
+ I40IW_COMPL_STATUS_PHYS_BUFFER_LIST_TOO_LONG,
+ I40IW_COMPL_STATUS_INVALID_VIRT_ADDRESS,
+ I40IW_COMPL_STATUS_INVALID_REGION,
+ I40IW_COMPL_STATUS_INVALID_WINDOW,
+ I40IW_COMPL_STATUS_INVALID_TOTAL_LENGTH
+};
+
+enum i40iw_completion_notify {
+ IW_CQ_COMPL_EVENT = 0,
+ IW_CQ_COMPL_SOLICITED = 1
+};
+
+struct i40iw_post_send {
+ i40iw_sgl sg_list;
+ u8 num_sges;
+};
+
+struct i40iw_post_inline_send {
+ void *data;
+ u32 len;
+};
+
+struct i40iw_post_send_w_inv {
+ i40iw_sgl sg_list;
+ u32 num_sges;
+ i40iw_stag remote_stag_to_inv;
+};
+
+struct i40iw_post_inline_send_w_inv {
+ void *data;
+ u32 len;
+ i40iw_stag remote_stag_to_inv;
+};
+
+struct i40iw_rdma_write {
+ i40iw_sgl lo_sg_list;
+ u8 num_lo_sges;
+ struct i40iw_sge rem_addr;
+};
+
+struct i40iw_inline_rdma_write {
+ void *data;
+ u32 len;
+ struct i40iw_sge rem_addr;
+};
+
+struct i40iw_rdma_read {
+ struct i40iw_sge lo_addr;
+ struct i40iw_sge rem_addr;
+};
+
+struct i40iw_bind_window {
+ i40iw_stag mr_stag;
+ u64 bind_length;
+ void *va;
+ enum i40iw_addressing_type addressing_type;
+ bool enable_reads;
+ bool enable_writes;
+ i40iw_stag mw_stag;
+};
+
+struct i40iw_inv_local_stag {
+ i40iw_stag target_stag;
+};
+
+struct i40iw_post_sq_info {
+ u64 wr_id;
+ u8 op_type;
+ bool signaled;
+ bool read_fence;
+ bool local_fence;
+ bool inline_data;
+ bool defer_flag;
+ union {
+ struct i40iw_post_send send;
+ struct i40iw_post_send send_w_sol;
+ struct i40iw_post_send_w_inv send_w_inv;
+ struct i40iw_post_send_w_inv send_w_sol_inv;
+ struct i40iw_rdma_write rdma_write;
+ struct i40iw_rdma_read rdma_read;
+ struct i40iw_rdma_read rdma_read_inv;
+ struct i40iw_bind_window bind_window;
+ struct i40iw_inv_local_stag inv_local_stag;
+ struct i40iw_inline_rdma_write inline_rdma_write;
+ struct i40iw_post_inline_send inline_send;
+ struct i40iw_post_inline_send inline_send_w_sol;
+ struct i40iw_post_inline_send_w_inv inline_send_w_inv;
+ struct i40iw_post_inline_send_w_inv inline_send_w_sol_inv;
+ } op;
+};
+
+struct i40iw_post_rq_info {
+ u64 wr_id;
+ i40iw_sgl sg_list;
+ u32 num_sges;
+};
+
+struct i40iw_cq_poll_info {
+ u64 wr_id;
+ i40iw_qp_handle qp_handle;
+ u32 bytes_xfered;
+ u32 tcp_seq_num;
+ u32 qp_id;
+ i40iw_stag inv_stag;
+ enum i40iw_completion_status comp_status;
+ u16 major_err;
+ u16 minor_err;
+ u8 op_type;
+ bool stag_invalid_set;
+ bool push_dropped;
+ bool error;
+ bool is_srq;
+ bool solicited_event;
+};
+
+struct i40iw_qp_uk_ops {
+ void (*iw_qp_post_wr)(struct i40iw_qp_uk *);
+ void (*iw_qp_ring_push_db)(struct i40iw_qp_uk *, u32);
+ enum i40iw_status_code (*iw_rdma_write)(struct i40iw_qp_uk *,
+ struct i40iw_post_sq_info *, bool);
+ enum i40iw_status_code (*iw_rdma_read)(struct i40iw_qp_uk *,
+ struct i40iw_post_sq_info *, bool, bool);
+ enum i40iw_status_code (*iw_send)(struct i40iw_qp_uk *,
+ struct i40iw_post_sq_info *, u32, bool);
+ enum i40iw_status_code (*iw_inline_rdma_write)(struct i40iw_qp_uk *,
+ struct i40iw_post_sq_info *, bool);
+ enum i40iw_status_code (*iw_inline_send)(struct i40iw_qp_uk *,
+ struct i40iw_post_sq_info *, u32, bool);
+ enum i40iw_status_code (*iw_stag_local_invalidate)(struct i40iw_qp_uk *,
+ struct i40iw_post_sq_info *, bool);
+ enum i40iw_status_code (*iw_mw_bind)(struct i40iw_qp_uk *,
+ struct i40iw_post_sq_info *, bool);
+ enum i40iw_status_code (*iw_post_receive)(struct i40iw_qp_uk *,
+ struct i40iw_post_rq_info *);
+ enum i40iw_status_code (*iw_post_nop)(struct i40iw_qp_uk *, u64, bool, bool);
+};
+
+struct i40iw_cq_ops {
+ enum i40iw_status_code (*iw_cq_request_notification)(struct i40iw_cq_uk *,
+ enum i40iw_completion_notify);
+ enum i40iw_status_code (*iw_cq_poll_completion)(struct i40iw_cq_uk *,
+ struct i40iw_cq_poll_info *, bool);
+ enum i40iw_status_code (*iw_cq_post_entries)(struct i40iw_cq_uk *, u8 count);
+ enum i40iw_status_code (*iw_cq_clean)(void *, struct i40iw_cq_uk *);
+};
+
+struct i40iw_dev_uk;
+
+struct i40iw_device_uk_ops {
+ enum i40iw_status_code (*iwarp_cq_uk_init)(struct i40iw_cq_uk *,
+ struct i40iw_cq_uk_init_info *);
+ enum i40iw_status_code (*iwarp_qp_uk_init)(struct i40iw_qp_uk *,
+ struct i40iw_qp_uk_init_info *);
+};
+
+struct i40iw_dev_uk {
+ struct i40iw_device_uk_ops ops_uk;
+};
+
+struct i40iw_sq_uk_wr_trk_info {
+ u64 wrid;
+ u64 wr_len;
+};
+
+struct i40iw_qp_uk {
+ u64 *sq_base;
+ u64 *rq_base;
+ u32 __iomem *wqe_alloc_reg;
+ struct i40iw_sq_uk_wr_trk_info *sq_wrtrk_array;
+ u64 *rq_wrid_array;
+ u64 *shadow_area;
+ u32 *push_db;
+ u64 *push_wqe;
+ struct i40iw_ring sq_ring;
+ struct i40iw_ring rq_ring;
+ struct i40iw_ring initial_ring;
+ u32 qp_id;
+ u32 sq_size;
+ u32 rq_size;
+ struct i40iw_qp_uk_ops ops;
+ bool use_srq;
+ u8 swqe_polarity;
+ u8 swqe_polarity_deferred;
+ u8 rwqe_polarity;
+ u8 rq_wqe_size;
+ u8 rq_wqe_size_multiplier;
+ u8 max_sq_frag_cnt;
+ u8 max_rq_frag_cnt;
+ bool deferred_flag;
+};
+
+struct i40iw_cq_uk {
+ struct i40iw_cqe *cq_base;
+ u32 __iomem *cqe_alloc_reg;
+ u64 *shadow_area;
+ u32 cq_id;
+ u32 cq_size;
+ struct i40iw_ring cq_ring;
+ u8 polarity;
+ bool avoid_mem_cflct;
+
+ struct i40iw_cq_ops ops;
+};
+
+struct i40iw_qp_uk_init_info {
+ u64 *sq;
+ u64 *rq;
+ u32 __iomem *wqe_alloc_reg;
+ u64 *shadow_area;
+ struct i40iw_sq_uk_wr_trk_info *sq_wrtrk_array;
+ u64 *rq_wrid_array;
+ u32 *push_db;
+ u64 *push_wqe;
+ u32 qp_id;
+ u32 sq_size;
+ u32 rq_size;
+ u8 max_sq_frag_cnt;
+ u8 max_rq_frag_cnt;
+
+};
+
+struct i40iw_cq_uk_init_info {
+ u32 __iomem *cqe_alloc_reg;
+ struct i40iw_cqe *cq_base;
+ u64 *shadow_area;
+ u32 cq_size;
+ u32 cq_id;
+ bool avoid_mem_cflct;
+};
+
+void i40iw_device_init_uk(struct i40iw_dev_uk *dev);
+
+void i40iw_qp_post_wr(struct i40iw_qp_uk *qp);
+u64 *i40iw_qp_get_next_send_wqe(struct i40iw_qp_uk *qp, u32 *wqe_idx,
+ u8 wqe_size);
+u64 *i40iw_qp_get_next_recv_wqe(struct i40iw_qp_uk *qp, u32 *wqe_idx);
+u64 *i40iw_qp_get_next_srq_wqe(struct i40iw_srq_uk *srq, u32 *wqe_idx);
+
+enum i40iw_status_code i40iw_cq_uk_init(struct i40iw_cq_uk *cq,
+ struct i40iw_cq_uk_init_info *info);
+enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp,
+ struct i40iw_qp_uk_init_info *info);
+
+enum i40iw_status_code i40iw_clean_cq(void *queue, struct i40iw_cq_uk *cq);
+enum i40iw_status_code i40iw_nop(struct i40iw_qp_uk *qp, u64 wr_id,
+ bool signaled, bool post_sq);
+enum i40iw_status_code i40iw_fragcnt_to_wqesize_sq(u8 frag_cnt, u8 *wqe_size);
+enum i40iw_status_code i40iw_fragcnt_to_wqesize_rq(u8 frag_cnt, u8 *wqe_size);
+enum i40iw_status_code i40iw_inline_data_size_to_wqesize(u32 data_size,
+ u8 *wqe_size);
+enum i40iw_status_code i40iw_get_wqe_shift(u32 wqdepth, u8 sge, u8 *shift);
+#endif