Add the EFA common commands implementation.
Signed-off-by: Gal Pressman <galpress@xxxxxxxxxx>
---
drivers/infiniband/hw/efa/efa_com_cmd.c | 544 ++++++++++++++++++++++++++++++++
1 file changed, 544 insertions(+)
create mode 100644 drivers/infiniband/hw/efa/efa_com_cmd.c
diff --git a/drivers/infiniband/hw/efa/efa_com_cmd.c b/drivers/infiniband/hw/efa/efa_com_cmd.c
new file mode 100644
index 000000000000..da9d4678928d
--- /dev/null
+++ b/drivers/infiniband/hw/efa/efa_com_cmd.c
@@ -0,0 +1,544 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+/*
+ * Copyright 2018 Amazon.com, Inc. or its affiliates.
+ */
+
+#include "efa.h"
+#include "efa_com.h"
+#include "efa_com_cmd.h"
+
+void efa_com_set_dma_addr(dma_addr_t addr, u32 *addr_high, u32 *addr_low)
+{
+ *addr_low = addr & GENMASK(31, 0);
+ *addr_high = (addr >> 32) & GENMASK(31, 0);
+}
+
+int efa_com_create_qp(struct efa_com_dev *edev,
+ struct efa_com_create_qp_params *params,
+ struct efa_com_create_qp_result *res)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_create_qp_resp cmd_completion;
+ struct efa_admin_create_qp_cmd create_qp_cmd;
+ int err;
+
+ memset(&create_qp_cmd, 0x0, sizeof(create_qp_cmd));
+
+ create_qp_cmd.aq_common_desc.opcode = EFA_ADMIN_CREATE_QP;
+
+ create_qp_cmd.pd = params->pd;
+ create_qp_cmd.qp_type = params->qp_type;
+ create_qp_cmd.flags = 0;
+ create_qp_cmd.sq_base_addr = 0;
+ create_qp_cmd.rq_base_addr = params->rq_base_addr;
+ create_qp_cmd.send_cq_idx = params->send_cq_idx;
+ create_qp_cmd.recv_cq_idx = params->recv_cq_idx;
+ create_qp_cmd.qp_alloc_size.send_queue_ring_size =
+ params->sq_ring_size_in_bytes;
+ create_qp_cmd.qp_alloc_size.send_queue_depth =
+ params->sq_depth;
+ create_qp_cmd.qp_alloc_size.recv_queue_ring_size =
+ params->rq_ring_size_in_bytes;
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&create_qp_cmd,
+ sizeof(create_qp_cmd),
+ (struct efa_admin_acq_entry *)&cmd_completion,
+ sizeof(cmd_completion));
+ if (unlikely(err)) {
+ pr_err("Failed to create qp [%d]\n", err);
+ return err;
+ }
+
+ res->qp_handle = cmd_completion.qp_handle;
+ res->qp_num = cmd_completion.qp_num;
+ res->sq_db_offset = cmd_completion.sq_db_offset;
+ res->rq_db_offset = cmd_completion.rq_db_offset;
+ res->llq_descriptors_offset = cmd_completion.llq_descriptors_offset;
+ res->send_sub_cq_idx = cmd_completion.send_sub_cq_idx;
+ res->recv_sub_cq_idx = cmd_completion.recv_sub_cq_idx;
+
+ return err;
+}
+
+int efa_com_destroy_qp(struct efa_com_dev *edev,
+ struct efa_com_destroy_qp_params *params)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_destroy_qp_resp cmd_completion;
+ struct efa_admin_destroy_qp_cmd qp_cmd;
+ int err;
+
+ memset(&qp_cmd, 0x0, sizeof(qp_cmd));
+
+ qp_cmd.aq_common_desc.opcode = EFA_ADMIN_DESTROY_QP;
+
+ qp_cmd.qp_handle = params->qp_handle;
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&qp_cmd,
+ sizeof(qp_cmd),
+ (struct efa_admin_acq_entry *)&cmd_completion,
+ sizeof(cmd_completion));
+ if (unlikely(err))
+ pr_err("failed to destroy qp-0x%08x [%d]\n", qp_cmd.qp_handle,
+ err);
+
+ return err;
+}
+
+int efa_com_create_cq(struct efa_com_dev *edev,
+ struct efa_com_create_cq_params *params,
+ struct efa_com_create_cq_result *result)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_create_cq_resp cmd_completion;
+ struct efa_admin_create_cq_cmd create_cmd;
+ int err;
+
+ memset(&create_cmd, 0x0, sizeof(create_cmd));
+ create_cmd.aq_common_desc.opcode = EFA_ADMIN_CREATE_CQ;
+ create_cmd.cq_caps_2 = (params->entry_size_in_bytes / 4) &
+ EFA_ADMIN_CREATE_CQ_CMD_CQ_ENTRY_SIZE_WORDS_MASK;
+ create_cmd.msix_vector_idx = 0;
+ create_cmd.cq_depth = params->cq_depth;
+ create_cmd.num_sub_cqs = params->num_sub_cqs;
+
+ efa_com_set_dma_addr(params->dma_addr,
+ &create_cmd.cq_ba.mem_addr_high,
+ &create_cmd.cq_ba.mem_addr_low);
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&create_cmd,
+ sizeof(create_cmd),
+ (struct efa_admin_acq_entry *)&cmd_completion,
+ sizeof(cmd_completion));
+ if (unlikely(err)) {
+ pr_err("failed to create cq[%d]\n", err);
+ return err;
+ }
+
+ pr_debug("created cq[%u], depth[%u]\n", cmd_completion.cq_idx,
+ params->cq_depth);
+ result->cq_idx = cmd_completion.cq_idx;
+ result->actual_depth = params->cq_depth;
+
+ return err;
+}
+
+int efa_com_destroy_cq(struct efa_com_dev *edev,
+ struct efa_com_destroy_cq_params *params)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_destroy_cq_resp destroy_resp;
+ struct efa_admin_destroy_cq_cmd destroy_cmd;
+ int err;
+
+ memset(&destroy_cmd, 0x0, sizeof(destroy_cmd));
+
+ destroy_cmd.cq_idx = params->cq_idx;
+ destroy_cmd.aq_common_desc.opcode = EFA_ADMIN_DESTROY_CQ;
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&destroy_cmd,
+ sizeof(destroy_cmd),
+ (struct efa_admin_acq_entry *)&destroy_resp,
+ sizeof(destroy_resp));
+
+ if (unlikely(err))
+ pr_err("Failed to destroy CQ. error: %d\n", err);
+
+ return err;
+}
+
+int efa_com_register_mr(struct efa_com_dev *edev,
+ struct efa_com_reg_mr_params *params,
+ struct efa_com_reg_mr_result *result)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_reg_mr_resp cmd_completion;
+ struct efa_admin_reg_mr_cmd mr_cmd;
+ int err;
+
+ memset(&mr_cmd, 0x0, sizeof(mr_cmd));
+
+ mr_cmd.aq_common_desc.opcode = EFA_ADMIN_REG_MR;
+ mr_cmd.aq_common_desc.flags = 0;
+
+ mr_cmd.pd = params->pd;
+ mr_cmd.mr_length = params->mr_length_in_bytes;
+
+ mr_cmd.flags |= 0 &
+ EFA_ADMIN_REG_MR_CMD_MEM_ADDR_PHY_MODE_EN_MASK;
+ mr_cmd.flags |= params->page_shift &
+ EFA_ADMIN_REG_MR_CMD_PHYS_PAGE_SIZE_SHIFT_MASK;
+ mr_cmd.iova = params->iova;
+ mr_cmd.permissions |= params->permissions &
+ EFA_ADMIN_REG_MR_CMD_LOCAL_WRITE_ENABLE_MASK;
+
+ if (params->inline_pbl) {
+ memcpy(mr_cmd.pbl.inline_pbl_array,
+ params->pbl.inline_pbl_array,
+ sizeof(mr_cmd.pbl.inline_pbl_array));
+ } else {
+ mr_cmd.pbl.pbl.length = params->pbl.pbl.length;
+ mr_cmd.pbl.pbl.address.mem_addr_low =
+ params->pbl.pbl.address.mem_addr_low;
+ mr_cmd.pbl.pbl.address.mem_addr_high =
+ params->pbl.pbl.address.mem_addr_high;
+ mr_cmd.aq_common_desc.flags |=
+ EFA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_MASK;
+ if (params->indirect)
+ mr_cmd.aq_common_desc.flags |=
+ EFA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+ }
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&mr_cmd,
+ sizeof(mr_cmd),
+ (struct efa_admin_acq_entry *)&cmd_completion,
+ sizeof(cmd_completion));
+ if (unlikely(err)) {
+ pr_err("failed to register mr [%d]\n", err);
+ return err;
+ }
+
+ result->l_key = cmd_completion.l_key;
+ result->r_key = cmd_completion.r_key;
+
+ return err;
+}
+
+int efa_com_dereg_mr(struct efa_com_dev *edev,
+ struct efa_com_dereg_mr_params *params)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_dereg_mr_resp cmd_completion;
+ struct efa_admin_dereg_mr_cmd mr_cmd;
+ int err;
+
+ memset(&mr_cmd, 0x0, sizeof(mr_cmd));
+
+ mr_cmd.aq_common_desc.opcode = EFA_ADMIN_DEREG_MR;
+ mr_cmd.l_key = params->l_key;
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&mr_cmd,
+ sizeof(mr_cmd),
+ (struct efa_admin_acq_entry *)&cmd_completion,
+ sizeof(cmd_completion));
+ if (unlikely(err))
+ pr_err("failed to de-register mr(lkey-0x%08X) [%d]\n",
+ mr_cmd.l_key, err);
+
+ return err;
+}
+
+int efa_com_create_ah(struct efa_com_dev *edev,
+ struct efa_com_create_ah_params *params,
+ struct efa_com_create_ah_result *result)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_create_ah_resp cmd_completion;
+ struct efa_admin_create_ah_cmd ah_cmd;
+ int err;
+
+ memset(&ah_cmd, 0x0, sizeof(ah_cmd));
+
+ ah_cmd.aq_common_desc.opcode = EFA_ADMIN_CREATE_AH;
+
+ memcpy(ah_cmd.dest_addr, params->dest_addr, sizeof(ah_cmd.dest_addr));
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&ah_cmd,
+ sizeof(ah_cmd),
+ (struct efa_admin_acq_entry *)&cmd_completion,
+ sizeof(cmd_completion));
+ if (unlikely(err)) {
+ pr_err("failed to create ah [%d]\n", err);
+ return err;
+ }
+
+ result->ah = cmd_completion.ah;
+
+ return err;
+}
+
+int efa_com_destroy_ah(struct efa_com_dev *edev,
+ struct efa_com_destroy_ah_params *params)
+{
+ struct efa_com_admin_queue *admin_queue = &edev->admin_queue;
+ struct efa_admin_destroy_ah_resp cmd_completion;
+ struct efa_admin_destroy_ah_cmd ah_cmd;
+ int err;
+
+ memset(&ah_cmd, 0x0, sizeof(ah_cmd));
+
+ ah_cmd.aq_common_desc.opcode = EFA_ADMIN_DESTROY_AH;
+ ah_cmd.ah = params->ah;
+
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)&ah_cmd,
+ sizeof(ah_cmd),
+ (struct efa_admin_acq_entry *)&cmd_completion,
+ sizeof(cmd_completion));
+ if (unlikely(err))
+ pr_err("failed to destroy ah-%#x [%d]\n", ah_cmd.ah, err);
+
+ return err;
+}
+
+static bool
+efa_com_check_supported_feature_id(struct efa_com_dev *edev,
+ enum efa_admin_aq_feature_id feature_id)
+{
+ u32 feature_mask = 1 << feature_id;
+
+ /* Device attributes is always supported */
+ if (feature_id != EFA_ADMIN_DEVICE_ATTR &&
+ !(edev->supported_features & feature_mask))
+ return false;
+
+ return true;
+}
+
+static int efa_com_get_feature_ex(struct efa_com_dev *edev,
+ struct efa_admin_get_feature_resp *get_resp,
+ enum efa_admin_aq_feature_id feature_id,
+ dma_addr_t control_buf_dma_addr,
+ u32 control_buff_size)
+{
+ struct efa_admin_get_feature_cmd get_cmd;
+ struct efa_com_admin_queue *admin_queue;
+ int err;
+
+ if (!efa_com_check_supported_feature_id(edev, feature_id)) {
+ pr_err("Feature %d isn't supported\n", feature_id);
+ return -EOPNOTSUPP;
+ }
+
+ memset(&get_cmd, 0x0, sizeof(get_cmd));
+ admin_queue = &edev->admin_queue;
+
+ get_cmd.aq_common_descriptor.opcode = EFA_ADMIN_GET_FEATURE;
+
+ if (control_buff_size)
+ get_cmd.aq_common_descriptor.flags =
+ EFA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+ else
+ get_cmd.aq_common_descriptor.flags = 0;
+
+ efa_com_set_dma_addr(control_buf_dma_addr,
+ &get_cmd.control_buffer.address.mem_addr_high,
+ &get_cmd.control_buffer.address.mem_addr_low);
+
+ get_cmd.control_buffer.length = control_buff_size;
+ get_cmd.feature_common.feature_id = feature_id;
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)
+ &get_cmd,
+ sizeof(get_cmd),
+ (struct efa_admin_acq_entry *)
+ get_resp,
+ sizeof(*get_resp));
+
+ if (unlikely(err))
+ pr_err("Failed to submit get_feature command %d error: %d\n",
+ feature_id, err);
+
+ return err;
+}
+
+static int efa_com_get_feature(struct efa_com_dev *edev,
+ struct efa_admin_get_feature_resp *get_resp,
+ enum efa_admin_aq_feature_id feature_id)
+{
+ return efa_com_get_feature_ex(edev, get_resp, feature_id, 0, 0);
+}
+
+int efa_com_get_network_attr(struct efa_com_dev *edev,
+ struct efa_com_get_network_attr_result *result)
+{
+ struct efa_admin_get_feature_resp resp;
+ int err;
+
+ err = efa_com_get_feature(edev, &resp,
+ EFA_ADMIN_NETWORK_ATTR);
+ if (unlikely(err)) {
+ pr_err("Failed to get network attributes %d\n", err);
+ return err;
+ }
+
+ memcpy(result->addr, resp.u.network_attr.addr,
+ sizeof(resp.u.network_attr.addr));
+ result->mtu = resp.u.network_attr.mtu;
+
+ return 0;
+}
+
+int efa_com_get_device_attr(struct efa_com_dev *edev,
+ struct efa_com_get_device_attr_result *result)
+{
+ struct pci_dev *pdev = container_of(edev->dmadev, struct pci_dev, dev);
+ struct efa_admin_get_feature_resp resp;
+ int err;
+
+ err = efa_com_get_feature(edev, &resp, EFA_ADMIN_DEVICE_ATTR);
+ if (unlikely(err)) {
+ pr_err("Failed to get network attributes %d\n", err);
+ return err;
+ }
+
+ result->fw_version = resp.u.device_attr.fw_version;
+ result->admin_api_version = resp.u.device_attr.admin_api_version;
+ result->vendor_id = pdev->vendor;
+ result->vendor_part_id = pdev->device;
+ result->device_version = resp.u.device_attr.device_version;
+ result->supported_features = resp.u.device_attr.supported_features;
+ result->phys_addr_width = resp.u.device_attr.phys_addr_width;
+ result->virt_addr_width = resp.u.device_attr.virt_addr_width;
+ result->db_bar = resp.u.device_attr.db_bar;
+
+ if (unlikely(result->admin_api_version < 1)) {
+ pr_err("Failed to get device attr api version [%u < 1]\n",
+ result->admin_api_version);
+ return -EINVAL;
+ }
+
+ edev->supported_features = resp.u.device_attr.supported_features;
+ err = efa_com_get_feature(edev, &resp,
+ EFA_ADMIN_QUEUE_ATTR);
+ if (unlikely(err)) {
+ pr_err("Failed to get network attributes %d\n", err);
+ return err;
+ }
+
+ result->max_sq = resp.u.queue_attr.max_sq;
+ result->max_sq_depth = min_t(u32, resp.u.queue_attr.max_sq_depth,
+ U16_MAX);
+ result->max_rq = resp.u.queue_attr.max_sq;
+ result->max_rq_depth = min_t(u32, resp.u.queue_attr.max_rq_depth,
+ U16_MAX);
+ result->max_cq = resp.u.queue_attr.max_cq;
+ result->max_cq_depth = resp.u.queue_attr.max_cq_depth;
+ result->inline_buf_size = resp.u.queue_attr.inline_buf_size;
+ result->max_sq_sge = resp.u.queue_attr.max_wr_send_sges;
+ result->max_rq_sge = resp.u.queue_attr.max_wr_recv_sges;
+ result->max_mr = resp.u.queue_attr.max_mr;
+ result->max_mr_pages = resp.u.queue_attr.max_mr_pages;
+ result->page_size_cap = PAGE_SIZE;
+ result->max_pd = resp.u.queue_attr.max_pd;
+ result->max_ah = resp.u.queue_attr.max_ah;
+ result->sub_cqs_per_cq = resp.u.queue_attr.sub_cqs_per_cq;
+
+ return 0;
+}
+
+int efa_com_get_hw_hints(struct efa_com_dev *edev,
+ struct efa_com_get_hw_hints_result *result)
+{
+ struct efa_admin_get_feature_resp resp;
+ int err;
+
+ err = efa_com_get_feature(edev, &resp, EFA_ADMIN_HW_HINTS);
+ if (unlikely(err)) {
+ pr_err("Failed to get hw hints %d\n", err);
+ return err;
+ }
+
+ result->admin_completion_timeout = resp.u.hw_hints.admin_completion_timeout;
+ result->driver_watchdog_timeout = resp.u.hw_hints.driver_watchdog_timeout;
+ result->mmio_read_timeout = resp.u.hw_hints.mmio_read_timeout;
+ result->poll_interval = resp.u.hw_hints.poll_interval;
+
+ return 0;
+}
+
+static int efa_com_set_feature_ex(struct efa_com_dev *edev,
+ struct efa_admin_set_feature_resp *set_resp,
+ struct efa_admin_set_feature_cmd *set_cmd,
+ enum efa_admin_aq_feature_id feature_id,
+ dma_addr_t control_buf_dma_addr,
+ u32 control_buff_size)
+{
+ struct efa_com_admin_queue *admin_queue;
+ int err;
+
+ if (!efa_com_check_supported_feature_id(edev, feature_id)) {
+ pr_err("Feature %d isn't supported\n", feature_id);
+ return -EOPNOTSUPP;
+ }
+
+ admin_queue = &edev->admin_queue;
+
+ set_cmd->aq_common_descriptor.opcode = EFA_ADMIN_SET_FEATURE;
+ if (control_buff_size) {
+ set_cmd->aq_common_descriptor.flags =
+ EFA_ADMIN_AQ_COMMON_DESC_CTRL_DATA_INDIRECT_MASK;
+ efa_com_set_dma_addr(control_buf_dma_addr,
+ &set_cmd->control_buffer.address.mem_addr_high,
+ &set_cmd->control_buffer.address.mem_addr_low);
+ } else {
+ set_cmd->aq_common_descriptor.flags = 0;
+ }
+
+ set_cmd->control_buffer.length = control_buff_size;
+ set_cmd->feature_common.feature_id = feature_id;
+ err = efa_com_cmd_exec(admin_queue,
+ (struct efa_admin_aq_entry *)set_cmd,
+ sizeof(*set_cmd),
+ (struct efa_admin_acq_entry *)set_resp,
+ sizeof(*set_resp));
+
+ if (unlikely(err))
+ pr_err("Failed to submit set_feature command %d error: %d\n",
+ feature_id, err);
+
+ return err;
+}
+
+static int efa_com_set_feature(struct efa_com_dev *edev,
+ struct efa_admin_set_feature_resp *set_resp,
+ struct efa_admin_set_feature_cmd *set_cmd,
+ enum efa_admin_aq_feature_id feature_id)
+{
+ return efa_com_set_feature_ex(edev, set_resp, set_cmd, feature_id,
+ 0, 0);
+}
+
+int efa_com_set_aenq_config(struct efa_com_dev *edev, u32 groups)
+{
+ struct efa_admin_get_feature_resp get_resp;
+ struct efa_admin_set_feature_resp set_resp;
+ struct efa_admin_set_feature_cmd cmd;
+ int err;
+
+ pr_debug("configuring aenq with groups[0x%x]\n", groups);
+
+ err = efa_com_get_feature(edev, &get_resp, EFA_ADMIN_AENQ_CONFIG);
+ if (unlikely(err)) {
+ pr_err("Failed to get aenq attributes: %d\n", err);
+ return err;
+ }
+
+ pr_debug("Get aenq groups: supported[0x%x] enabled[0x%x]\n",
+ get_resp.u.aenq.supported_groups,
+ get_resp.u.aenq.enabled_groups);
+
+ if ((get_resp.u.aenq.supported_groups & groups) != groups) {
+ pr_err("Trying to set unsupported aenq groups[0x%x] supported[0x%x]\n",
+ groups, get_resp.u.aenq.supported_groups);
+ return -EOPNOTSUPP;
+ }
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.u.aenq.enabled_groups = groups;
+ err = efa_com_set_feature(edev, &set_resp, &cmd,
+ EFA_ADMIN_AENQ_CONFIG);
+ if (unlikely(err)) {
+ pr_err("Failed to set aenq attributes: %d\n", err);
+ return err;
+ }
+
+ return 0;
+}
--
2.7.4
