return NULL;
}
-static void dlb2_configure_dir_queue(struct dlb2_hw *hw,
- struct dlb2_hw_domain *domain,
- struct dlb2_dir_pq_pair *queue,
- struct dlb2_create_dir_queue_args *args,
- bool vdev_req,
- unsigned int vdev_id)
-{
- union dlb2_sys_dir_vasqid_v r0 = { {0} };
- union dlb2_sys_dir_qid_its r1 = { {0} };
- union dlb2_lsp_qid_dir_depth_thrsh r2 = { {0} };
- union dlb2_sys_dir_qid_v r5 = { {0} };
-
- unsigned int offs;
-
- /* QID write permissions are turned on when the domain is started */
- r0.field.vasqid_v = 0;
-
- offs = domain->id.phys_id * DLB2_MAX_NUM_DIR_QUEUES(hw->ver) +
- queue->id.phys_id;
-
- DLB2_CSR_WR(hw, DLB2_SYS_DIR_VASQID_V(offs), r0.val);
-
- /* Don't timestamp QEs that pass through this queue */
- r1.field.qid_its = 0;
-
- DLB2_CSR_WR(hw,
- DLB2_SYS_DIR_QID_ITS(queue->id.phys_id),
- r1.val);
-
- r2.field.thresh = args->depth_threshold;
-
- DLB2_CSR_WR(hw,
- DLB2_LSP_QID_DIR_DEPTH_THRSH(queue->id.phys_id),
- r2.val);
-
- if (vdev_req) {
- union dlb2_sys_vf_dir_vqid_v r3 = { {0} };
- union dlb2_sys_vf_dir_vqid2qid r4 = { {0} };
-
- offs = vdev_id * DLB2_MAX_NUM_DIR_QUEUES(hw->ver)
- + queue->id.virt_id;
-
- r3.field.vqid_v = 1;
-
- DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VQID_V(offs), r3.val);
-
- r4.field.qid = queue->id.phys_id;
-
- DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VQID2QID(offs), r4.val);
- }
-
- r5.field.qid_v = 1;
-
- DLB2_CSR_WR(hw, DLB2_SYS_DIR_QID_V(queue->id.phys_id), r5.val);
-
- queue->queue_configured = true;
-}
-
-static void
-dlb2_log_create_dir_queue_args(struct dlb2_hw *hw,
- u32 domain_id,
- struct dlb2_create_dir_queue_args *args,
- bool vdev_req,
- unsigned int vdev_id)
-{
- DLB2_HW_DBG(hw, "DLB2 create directed queue arguments:\n");
- if (vdev_req)
- DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
- DLB2_HW_DBG(hw, "\tDomain ID: %d\n", domain_id);
- DLB2_HW_DBG(hw, "\tPort ID: %d\n", args->port_id);
-}
-
-static int
-dlb2_verify_create_dir_queue_args(struct dlb2_hw *hw,
- u32 domain_id,
- struct dlb2_create_dir_queue_args *args,
- struct dlb2_cmd_response *resp,
- bool vdev_req,
- unsigned int vdev_id)
-{
- struct dlb2_hw_domain *domain;
-
- domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
-
- if (domain == NULL) {
- resp->status = DLB2_ST_INVALID_DOMAIN_ID;
- return -EINVAL;
- }
-
- if (!domain->configured) {
- resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
- return -EINVAL;
- }
-
- if (domain->started) {
- resp->status = DLB2_ST_DOMAIN_STARTED;
- return -EINVAL;
- }
-
- /*
- * If the user claims the port is already configured, validate the port
- * ID, its domain, and whether the port is configured.
- */
- if (args->port_id != -1) {
- struct dlb2_dir_pq_pair *port;
-
- port = dlb2_get_domain_used_dir_pq(hw,
- args->port_id,
- vdev_req,
- domain);
-
- if (port == NULL || port->domain_id.phys_id !=
- domain->id.phys_id || !port->port_configured) {
- resp->status = DLB2_ST_INVALID_PORT_ID;
- return -EINVAL;
- }
- }
-
- /*
- * If the queue's port is not configured, validate that a free
- * port-queue pair is available.
- */
- if (args->port_id == -1 &&
- dlb2_list_empty(&domain->avail_dir_pq_pairs)) {
- resp->status = DLB2_ST_DIR_QUEUES_UNAVAILABLE;
- return -EINVAL;
- }
-
- return 0;
-}
-
-/**
- * dlb2_hw_create_dir_queue() - Allocate and initialize a DLB DIR queue.
- * @hw: Contains the current state of the DLB2 hardware.
- * @domain_id: Domain ID
- * @args: User-provided arguments.
- * @resp: Response to user.
- * @vdev_req: Request came from a virtual device.
- * @vdev_id: If vdev_req is true, this contains the virtual device's ID.
- *
- * Return: returns < 0 on error, 0 otherwise. If the driver is unable to
- * satisfy a request, resp->status will be set accordingly.
- */
-int dlb2_hw_create_dir_queue(struct dlb2_hw *hw,
- u32 domain_id,
- struct dlb2_create_dir_queue_args *args,
- struct dlb2_cmd_response *resp,
- bool vdev_req,
- unsigned int vdev_id)
-{
- struct dlb2_dir_pq_pair *queue;
- struct dlb2_hw_domain *domain;
- int ret;
-
- dlb2_log_create_dir_queue_args(hw, domain_id, args, vdev_req, vdev_id);
-
- /*
- * Verify that hardware resources are available before attempting to
- * satisfy the request. This simplifies the error unwinding code.
- */
- ret = dlb2_verify_create_dir_queue_args(hw,
- domain_id,
- args,
- resp,
- vdev_req,
- vdev_id);
- if (ret)
- return ret;
-
- domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
- if (domain == NULL) {
- DLB2_HW_ERR(hw,
- "[%s():%d] Internal error: domain not found\n",
- __func__, __LINE__);
- return -EFAULT;
- }
-
- if (args->port_id != -1)
- queue = dlb2_get_domain_used_dir_pq(hw,
- args->port_id,
- vdev_req,
- domain);
- else
- queue = DLB2_DOM_LIST_HEAD(domain->avail_dir_pq_pairs,
- typeof(*queue));
- if (queue == NULL) {
- DLB2_HW_ERR(hw,
- "[%s():%d] Internal error: no available dir queues\n",
- __func__, __LINE__);
- return -EFAULT;
- }
-
- dlb2_configure_dir_queue(hw, domain, queue, args, vdev_req, vdev_id);
-
- /*
- * Configuration succeeded, so move the resource from the 'avail' to
- * the 'used' list (if it's not already there).
- */
- if (args->port_id == -1) {
- dlb2_list_del(&domain->avail_dir_pq_pairs,
- &queue->domain_list);
-
- dlb2_list_add(&domain->used_dir_pq_pairs,
- &queue->domain_list);
- }
-
- resp->status = 0;
-
- resp->id = (vdev_req) ? queue->id.virt_id : queue->id.phys_id;
-
- return 0;
-}
-
static bool
dlb2_port_find_slot_with_pending_map_queue(struct dlb2_ldb_port *port,
struct dlb2_ldb_queue *queue,
return 0;
}
+
+static void dlb2_configure_dir_queue(struct dlb2_hw *hw,
+ struct dlb2_hw_domain *domain,
+ struct dlb2_dir_pq_pair *queue,
+ struct dlb2_create_dir_queue_args *args,
+ bool vdev_req,
+ unsigned int vdev_id)
+{
+ unsigned int offs;
+ u32 reg = 0;
+
+ /* QID write permissions are turned on when the domain is started */
+ offs = domain->id.phys_id * DLB2_MAX_NUM_DIR_QUEUES(hw->ver) +
+ queue->id.phys_id;
+
+ DLB2_CSR_WR(hw, DLB2_SYS_DIR_VASQID_V(offs), reg);
+
+ /* Don't timestamp QEs that pass through this queue */
+ DLB2_CSR_WR(hw, DLB2_SYS_DIR_QID_ITS(queue->id.phys_id), reg);
+
+ reg = 0;
+ DLB2_BITS_SET(reg, args->depth_threshold,
+ DLB2_LSP_QID_DIR_DEPTH_THRSH_THRESH);
+ DLB2_CSR_WR(hw,
+ DLB2_LSP_QID_DIR_DEPTH_THRSH(hw->ver, queue->id.phys_id),
+ reg);
+
+ if (vdev_req) {
+ offs = vdev_id * DLB2_MAX_NUM_DIR_QUEUES(hw->ver) +
+ queue->id.virt_id;
+
+ reg = 0;
+ DLB2_BIT_SET(reg, DLB2_SYS_VF_DIR_VQID_V_VQID_V);
+ DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VQID_V(offs), reg);
+
+ reg = 0;
+ DLB2_BITS_SET(reg, queue->id.phys_id,
+ DLB2_SYS_VF_DIR_VQID2QID_QID);
+ DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VQID2QID(offs), reg);
+ }
+
+ reg = 0;
+ DLB2_BIT_SET(reg, DLB2_SYS_DIR_QID_V_QID_V);
+ DLB2_CSR_WR(hw, DLB2_SYS_DIR_QID_V(queue->id.phys_id), reg);
+
+ queue->queue_configured = true;
+}
+
+static void
+dlb2_log_create_dir_queue_args(struct dlb2_hw *hw,
+ u32 domain_id,
+ struct dlb2_create_dir_queue_args *args,
+ bool vdev_req,
+ unsigned int vdev_id)
+{
+ DLB2_HW_DBG(hw, "DLB2 create directed queue arguments:\n");
+ if (vdev_req)
+ DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id);
+ DLB2_HW_DBG(hw, "\tDomain ID: %d\n", domain_id);
+ DLB2_HW_DBG(hw, "\tPort ID: %d\n", args->port_id);
+}
+
+static int
+dlb2_verify_create_dir_queue_args(struct dlb2_hw *hw,
+ u32 domain_id,
+ struct dlb2_create_dir_queue_args *args,
+ struct dlb2_cmd_response *resp,
+ bool vdev_req,
+ unsigned int vdev_id,
+ struct dlb2_hw_domain **out_domain,
+ struct dlb2_dir_pq_pair **out_queue)
+{
+ struct dlb2_hw_domain *domain;
+ struct dlb2_dir_pq_pair *pq;
+
+ domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id);
+
+ if (!domain) {
+ resp->status = DLB2_ST_INVALID_DOMAIN_ID;
+ return -EINVAL;
+ }
+
+ if (!domain->configured) {
+ resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED;
+ return -EINVAL;
+ }
+
+ if (domain->started) {
+ resp->status = DLB2_ST_DOMAIN_STARTED;
+ return -EINVAL;
+ }
+
+ /*
+ * If the user claims the port is already configured, validate the port
+ * ID, its domain, and whether the port is configured.
+ */
+ if (args->port_id != -1) {
+ pq = dlb2_get_domain_used_dir_pq(hw,
+ args->port_id,
+ vdev_req,
+ domain);
+
+ if (!pq || pq->domain_id.phys_id != domain->id.phys_id ||
+ !pq->port_configured) {
+ resp->status = DLB2_ST_INVALID_PORT_ID;
+ return -EINVAL;
+ }
+ } else {
+ /*
+ * If the queue's port is not configured, validate that a free
+ * port-queue pair is available.
+ */
+ pq = DLB2_DOM_LIST_HEAD(domain->avail_dir_pq_pairs,
+ typeof(*pq));
+ if (!pq) {
+ resp->status = DLB2_ST_DIR_QUEUES_UNAVAILABLE;
+ return -EINVAL;
+ }
+ }
+
+ *out_domain = domain;
+ *out_queue = pq;
+
+ return 0;
+}
+
+/**
+ * dlb2_hw_create_dir_queue() - create a directed queue
+ * @hw: dlb2_hw handle for a particular device.
+ * @domain_id: domain ID.
+ * @args: queue creation arguments.
+ * @resp: response structure.
+ * @vdev_req: indicates whether this request came from a vdev.
+ * @vdev_id: If vdev_req is true, this contains the vdev's ID.
+ *
+ * This function creates a directed queue.
+ *
+ * A vdev can be either an SR-IOV virtual function or a Scalable IOV virtual
+ * device.
+ *
+ * Return:
+ * Returns 0 upon success, < 0 otherwise. If an error occurs, resp->status is
+ * assigned a detailed error code from enum dlb2_error. If successful, resp->id
+ * contains the queue ID.
+ *
+ * resp->id contains a virtual ID if vdev_req is true.
+ *
+ * Errors:
+ * EINVAL - A requested resource is unavailable, the domain is not configured,
+ * or the domain has already been started.
+ * EFAULT - Internal error (resp->status not set).
+ */
+int dlb2_hw_create_dir_queue(struct dlb2_hw *hw,
+ u32 domain_id,
+ struct dlb2_create_dir_queue_args *args,
+ struct dlb2_cmd_response *resp,
+ bool vdev_req,
+ unsigned int vdev_id)
+{
+ struct dlb2_dir_pq_pair *queue;
+ struct dlb2_hw_domain *domain;
+ int ret;
+
+ dlb2_log_create_dir_queue_args(hw, domain_id, args, vdev_req, vdev_id);
+
+ /*
+ * Verify that hardware resources are available before attempting to
+ * satisfy the request. This simplifies the error unwinding code.
+ */
+ ret = dlb2_verify_create_dir_queue_args(hw,
+ domain_id,
+ args,
+ resp,
+ vdev_req,
+ vdev_id,
+ &domain,
+ &queue);
+ if (ret)
+ return ret;
+
+ dlb2_configure_dir_queue(hw, domain, queue, args, vdev_req, vdev_id);
+
+ /*
+ * Configuration succeeded, so move the resource from the 'avail' to
+ * the 'used' list (if it's not already there).
+ */
+ if (args->port_id == -1) {
+ dlb2_list_del(&domain->avail_dir_pq_pairs,
+ &queue->domain_list);
+
+ dlb2_list_add(&domain->used_dir_pq_pairs,
+ &queue->domain_list);
+ }
+
+ resp->status = 0;
+
+ resp->id = (vdev_req) ? queue->id.virt_id : queue->id.phys_id;
+
+ return 0;
+}
+
git.droids-corp.org / dpdk.git / commitdiff