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path: root/drivers/infiniband/hw/irdma/uda.c
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Diffstat (limited to 'drivers/infiniband/hw/irdma/uda.c')
-rw-r--r--drivers/infiniband/hw/irdma/uda.c265
1 files changed, 265 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/irdma/uda.c b/drivers/infiniband/hw/irdma/uda.c
new file mode 100644
index 000000000..284cec2a7
--- /dev/null
+++ b/drivers/infiniband/hw/irdma/uda.c
@@ -0,0 +1,265 @@
+// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
+/* Copyright (c) 2016 - 2021 Intel Corporation */
+#include <linux/etherdevice.h>
+
+#include "osdep.h"
+#include "hmc.h"
+#include "defs.h"
+#include "type.h"
+#include "protos.h"
+#include "uda.h"
+#include "uda_d.h"
+
+/**
+ * irdma_sc_access_ah() - Create, modify or delete AH
+ * @cqp: struct for cqp hw
+ * @info: ah information
+ * @op: Operation
+ * @scratch: u64 saved to be used during cqp completion
+ */
+int irdma_sc_access_ah(struct irdma_sc_cqp *cqp, struct irdma_ah_info *info,
+ u32 op, u64 scratch)
+{
+ __le64 *wqe;
+ u64 qw1, qw2;
+
+ wqe = irdma_sc_cqp_get_next_send_wqe(cqp, scratch);
+ if (!wqe)
+ return -ENOMEM;
+
+ set_64bit_val(wqe, 0, ether_addr_to_u64(info->mac_addr) << 16);
+ qw1 = FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_PDINDEXLO, info->pd_idx) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_TC, info->tc_tos) |
+ FIELD_PREP(IRDMA_UDAQPC_VLANTAG, info->vlan_tag);
+
+ qw2 = FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ARPINDEX, info->dst_arpindex) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_FLOWLABEL, info->flow_label) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_HOPLIMIT, info->hop_ttl) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_PDINDEXHI, info->pd_idx >> 16);
+
+ if (!info->ipv4_valid) {
+ set_64bit_val(wqe, 40,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR0, info->dest_ip_addr[0]) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR1, info->dest_ip_addr[1]));
+ set_64bit_val(wqe, 32,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR2, info->dest_ip_addr[2]) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR3, info->dest_ip_addr[3]));
+
+ set_64bit_val(wqe, 56,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR0, info->src_ip_addr[0]) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR1, info->src_ip_addr[1]));
+ set_64bit_val(wqe, 48,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR2, info->src_ip_addr[2]) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR3, info->src_ip_addr[3]));
+ } else {
+ set_64bit_val(wqe, 32,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR3, info->dest_ip_addr[0]));
+
+ set_64bit_val(wqe, 48,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR3, info->src_ip_addr[0]));
+ }
+
+ set_64bit_val(wqe, 8, qw1);
+ set_64bit_val(wqe, 16, qw2);
+
+ dma_wmb(); /* need write block before writing WQE header */
+
+ set_64bit_val(
+ wqe, 24,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_WQEVALID, cqp->polarity) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_OPCODE, op) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_DOLOOPBACKK, info->do_lpbk) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_IPV4VALID, info->ipv4_valid) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_AVIDX, info->ah_idx) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_INSERTVLANTAG, info->insert_vlan_tag));
+
+ print_hex_dump_debug("WQE: MANAGE_AH WQE", DUMP_PREFIX_OFFSET, 16, 8,
+ wqe, IRDMA_CQP_WQE_SIZE * 8, false);
+ irdma_sc_cqp_post_sq(cqp);
+
+ return 0;
+}
+
+/**
+ * irdma_create_mg_ctx() - create a mcg context
+ * @info: multicast group context info
+ */
+static void irdma_create_mg_ctx(struct irdma_mcast_grp_info *info)
+{
+ struct irdma_mcast_grp_ctx_entry_info *entry_info = NULL;
+ u8 idx = 0; /* index in the array */
+ u8 ctx_idx = 0; /* index in the MG context */
+
+ memset(info->dma_mem_mc.va, 0, IRDMA_MAX_MGS_PER_CTX * sizeof(u64));
+
+ for (idx = 0; idx < IRDMA_MAX_MGS_PER_CTX; idx++) {
+ entry_info = &info->mg_ctx_info[idx];
+ if (entry_info->valid_entry) {
+ set_64bit_val((__le64 *)info->dma_mem_mc.va,
+ ctx_idx * sizeof(u64),
+ FIELD_PREP(IRDMA_UDA_MGCTX_DESTPORT, entry_info->dest_port) |
+ FIELD_PREP(IRDMA_UDA_MGCTX_VALIDENT, entry_info->valid_entry) |
+ FIELD_PREP(IRDMA_UDA_MGCTX_QPID, entry_info->qp_id));
+ ctx_idx++;
+ }
+ }
+}
+
+/**
+ * irdma_access_mcast_grp() - Access mcast group based on op
+ * @cqp: Control QP
+ * @info: multicast group context info
+ * @op: operation to perform
+ * @scratch: u64 saved to be used during cqp completion
+ */
+int irdma_access_mcast_grp(struct irdma_sc_cqp *cqp,
+ struct irdma_mcast_grp_info *info, u32 op,
+ u64 scratch)
+{
+ __le64 *wqe;
+
+ if (info->mg_id >= IRDMA_UDA_MAX_FSI_MGS) {
+ ibdev_dbg(to_ibdev(cqp->dev), "WQE: mg_id out of range\n");
+ return -EINVAL;
+ }
+
+ wqe = irdma_sc_cqp_get_next_send_wqe(cqp, scratch);
+ if (!wqe) {
+ ibdev_dbg(to_ibdev(cqp->dev), "WQE: ring full\n");
+ return -ENOMEM;
+ }
+
+ irdma_create_mg_ctx(info);
+
+ set_64bit_val(wqe, 32, info->dma_mem_mc.pa);
+ set_64bit_val(wqe, 16,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MG_VLANID, info->vlan_id) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_QS_HANDLE, info->qs_handle));
+ set_64bit_val(wqe, 0, ether_addr_to_u64(info->dest_mac_addr));
+ set_64bit_val(wqe, 8,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MG_HMC_FCN_ID, info->hmc_fcn_id));
+
+ if (!info->ipv4_valid) {
+ set_64bit_val(wqe, 56,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR0, info->dest_ip_addr[0]) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR1, info->dest_ip_addr[1]));
+ set_64bit_val(wqe, 48,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR2, info->dest_ip_addr[2]) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR3, info->dest_ip_addr[3]));
+ } else {
+ set_64bit_val(wqe, 48,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MAV_ADDR3, info->dest_ip_addr[0]));
+ }
+
+ dma_wmb(); /* need write memory block before writing the WQE header. */
+
+ set_64bit_val(wqe, 24,
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MG_WQEVALID, cqp->polarity) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MG_OPCODE, op) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MG_MGIDX, info->mg_id) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MG_VLANVALID, info->vlan_valid) |
+ FIELD_PREP(IRDMA_UDA_CQPSQ_MG_IPV4VALID, info->ipv4_valid));
+
+ print_hex_dump_debug("WQE: MANAGE_MCG WQE", DUMP_PREFIX_OFFSET, 16, 8,
+ wqe, IRDMA_CQP_WQE_SIZE * 8, false);
+ print_hex_dump_debug("WQE: MCG_HOST CTX WQE", DUMP_PREFIX_OFFSET, 16,
+ 8, info->dma_mem_mc.va,
+ IRDMA_MAX_MGS_PER_CTX * 8, false);
+ irdma_sc_cqp_post_sq(cqp);
+
+ return 0;
+}
+
+/**
+ * irdma_compare_mgs - Compares two multicast group structures
+ * @entry1: Multcast group info
+ * @entry2: Multcast group info in context
+ */
+static bool irdma_compare_mgs(struct irdma_mcast_grp_ctx_entry_info *entry1,
+ struct irdma_mcast_grp_ctx_entry_info *entry2)
+{
+ if (entry1->dest_port == entry2->dest_port &&
+ entry1->qp_id == entry2->qp_id)
+ return true;
+
+ return false;
+}
+
+/**
+ * irdma_sc_add_mcast_grp - Allocates mcast group entry in ctx
+ * @ctx: Multcast group context
+ * @mg: Multcast group info
+ */
+int irdma_sc_add_mcast_grp(struct irdma_mcast_grp_info *ctx,
+ struct irdma_mcast_grp_ctx_entry_info *mg)
+{
+ u32 idx;
+ bool free_entry_found = false;
+ u32 free_entry_idx = 0;
+
+ /* find either an identical or a free entry for a multicast group */
+ for (idx = 0; idx < IRDMA_MAX_MGS_PER_CTX; idx++) {
+ if (ctx->mg_ctx_info[idx].valid_entry) {
+ if (irdma_compare_mgs(&ctx->mg_ctx_info[idx], mg)) {
+ ctx->mg_ctx_info[idx].use_cnt++;
+ return 0;
+ }
+ continue;
+ }
+ if (!free_entry_found) {
+ free_entry_found = true;
+ free_entry_idx = idx;
+ }
+ }
+
+ if (free_entry_found) {
+ ctx->mg_ctx_info[free_entry_idx] = *mg;
+ ctx->mg_ctx_info[free_entry_idx].valid_entry = true;
+ ctx->mg_ctx_info[free_entry_idx].use_cnt = 1;
+ ctx->no_of_mgs++;
+ return 0;
+ }
+
+ return -ENOMEM;
+}
+
+/**
+ * irdma_sc_del_mcast_grp - Delete mcast group
+ * @ctx: Multcast group context
+ * @mg: Multcast group info
+ *
+ * Finds and removes a specific mulicast group from context, all
+ * parameters must match to remove a multicast group.
+ */
+int irdma_sc_del_mcast_grp(struct irdma_mcast_grp_info *ctx,
+ struct irdma_mcast_grp_ctx_entry_info *mg)
+{
+ u32 idx;
+
+ /* find an entry in multicast group context */
+ for (idx = 0; idx < IRDMA_MAX_MGS_PER_CTX; idx++) {
+ if (!ctx->mg_ctx_info[idx].valid_entry)
+ continue;
+
+ if (irdma_compare_mgs(mg, &ctx->mg_ctx_info[idx])) {
+ ctx->mg_ctx_info[idx].use_cnt--;
+
+ if (!ctx->mg_ctx_info[idx].use_cnt) {
+ ctx->mg_ctx_info[idx].valid_entry = false;
+ ctx->no_of_mgs--;
+ /* Remove gap if element was not the last */
+ if (idx != ctx->no_of_mgs &&
+ ctx->no_of_mgs > 0) {
+ memcpy(&ctx->mg_ctx_info[idx],
+ &ctx->mg_ctx_info[ctx->no_of_mgs - 1],
+ sizeof(ctx->mg_ctx_info[idx]));
+ ctx->mg_ctx_info[ctx->no_of_mgs - 1].valid_entry = false;
+ }
+ }
+
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
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