RDMA/amso1100: Add driver for Ammasso 1100 RNIC
Add a driver for the Ammasso 1100 gigabit ethernet RNIC.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/amso1100/c2_ae.c b/drivers/infiniband/hw/amso1100/c2_ae.c
new file mode 100644
index 0000000..08f46c8
--- /dev/null
+++ b/drivers/infiniband/hw/amso1100/c2_ae.c
@@ -0,0 +1,321 @@
+/*
+ * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
+ * Copyright (c) 2005 Open Grid Computing, Inc. 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
+ * OpenIB.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 "c2.h"
+#include <rdma/iw_cm.h>
+#include "c2_status.h"
+#include "c2_ae.h"
+
+static int c2_convert_cm_status(u32 c2_status)
+{
+ switch (c2_status) {
+ case C2_CONN_STATUS_SUCCESS:
+ return 0;
+ case C2_CONN_STATUS_REJECTED:
+ return -ENETRESET;
+ case C2_CONN_STATUS_REFUSED:
+ return -ECONNREFUSED;
+ case C2_CONN_STATUS_TIMEDOUT:
+ return -ETIMEDOUT;
+ case C2_CONN_STATUS_NETUNREACH:
+ return -ENETUNREACH;
+ case C2_CONN_STATUS_HOSTUNREACH:
+ return -EHOSTUNREACH;
+ case C2_CONN_STATUS_INVALID_RNIC:
+ return -EINVAL;
+ case C2_CONN_STATUS_INVALID_QP:
+ return -EINVAL;
+ case C2_CONN_STATUS_INVALID_QP_STATE:
+ return -EINVAL;
+ case C2_CONN_STATUS_ADDR_NOT_AVAIL:
+ return -EADDRNOTAVAIL;
+ default:
+ printk(KERN_ERR PFX
+ "%s - Unable to convert CM status: %d\n",
+ __FUNCTION__, c2_status);
+ return -EIO;
+ }
+}
+
+#ifdef DEBUG
+static const char* to_event_str(int event)
+{
+ static const char* event_str[] = {
+ "CCAE_REMOTE_SHUTDOWN",
+ "CCAE_ACTIVE_CONNECT_RESULTS",
+ "CCAE_CONNECTION_REQUEST",
+ "CCAE_LLP_CLOSE_COMPLETE",
+ "CCAE_TERMINATE_MESSAGE_RECEIVED",
+ "CCAE_LLP_CONNECTION_RESET",
+ "CCAE_LLP_CONNECTION_LOST",
+ "CCAE_LLP_SEGMENT_SIZE_INVALID",
+ "CCAE_LLP_INVALID_CRC",
+ "CCAE_LLP_BAD_FPDU",
+ "CCAE_INVALID_DDP_VERSION",
+ "CCAE_INVALID_RDMA_VERSION",
+ "CCAE_UNEXPECTED_OPCODE",
+ "CCAE_INVALID_DDP_QUEUE_NUMBER",
+ "CCAE_RDMA_READ_NOT_ENABLED",
+ "CCAE_RDMA_WRITE_NOT_ENABLED",
+ "CCAE_RDMA_READ_TOO_SMALL",
+ "CCAE_NO_L_BIT",
+ "CCAE_TAGGED_INVALID_STAG",
+ "CCAE_TAGGED_BASE_BOUNDS_VIOLATION",
+ "CCAE_TAGGED_ACCESS_RIGHTS_VIOLATION",
+ "CCAE_TAGGED_INVALID_PD",
+ "CCAE_WRAP_ERROR",
+ "CCAE_BAD_CLOSE",
+ "CCAE_BAD_LLP_CLOSE",
+ "CCAE_INVALID_MSN_RANGE",
+ "CCAE_INVALID_MSN_GAP",
+ "CCAE_IRRQ_OVERFLOW",
+ "CCAE_IRRQ_MSN_GAP",
+ "CCAE_IRRQ_MSN_RANGE",
+ "CCAE_IRRQ_INVALID_STAG",
+ "CCAE_IRRQ_BASE_BOUNDS_VIOLATION",
+ "CCAE_IRRQ_ACCESS_RIGHTS_VIOLATION",
+ "CCAE_IRRQ_INVALID_PD",
+ "CCAE_IRRQ_WRAP_ERROR",
+ "CCAE_CQ_SQ_COMPLETION_OVERFLOW",
+ "CCAE_CQ_RQ_COMPLETION_ERROR",
+ "CCAE_QP_SRQ_WQE_ERROR",
+ "CCAE_QP_LOCAL_CATASTROPHIC_ERROR",
+ "CCAE_CQ_OVERFLOW",
+ "CCAE_CQ_OPERATION_ERROR",
+ "CCAE_SRQ_LIMIT_REACHED",
+ "CCAE_QP_RQ_LIMIT_REACHED",
+ "CCAE_SRQ_CATASTROPHIC_ERROR",
+ "CCAE_RNIC_CATASTROPHIC_ERROR"
+ };
+
+ if (event < CCAE_REMOTE_SHUTDOWN ||
+ event > CCAE_RNIC_CATASTROPHIC_ERROR)
+ return "<invalid event>";
+
+ event -= CCAE_REMOTE_SHUTDOWN;
+ return event_str[event];
+}
+
+static const char *to_qp_state_str(int state)
+{
+ switch (state) {
+ case C2_QP_STATE_IDLE:
+ return "C2_QP_STATE_IDLE";
+ case C2_QP_STATE_CONNECTING:
+ return "C2_QP_STATE_CONNECTING";
+ case C2_QP_STATE_RTS:
+ return "C2_QP_STATE_RTS";
+ case C2_QP_STATE_CLOSING:
+ return "C2_QP_STATE_CLOSING";
+ case C2_QP_STATE_TERMINATE:
+ return "C2_QP_STATE_TERMINATE";
+ case C2_QP_STATE_ERROR:
+ return "C2_QP_STATE_ERROR";
+ default:
+ return "<invalid QP state>";
+ };
+}
+#endif
+
+void c2_ae_event(struct c2_dev *c2dev, u32 mq_index)
+{
+ struct c2_mq *mq = c2dev->qptr_array[mq_index];
+ union c2wr *wr;
+ void *resource_user_context;
+ struct iw_cm_event cm_event;
+ struct ib_event ib_event;
+ enum c2_resource_indicator resource_indicator;
+ enum c2_event_id event_id;
+ unsigned long flags;
+ int status;
+
+ /*
+ * retreive the message
+ */
+ wr = c2_mq_consume(mq);
+ if (!wr)
+ return;
+
+ memset(&ib_event, 0, sizeof(ib_event));
+ memset(&cm_event, 0, sizeof(cm_event));
+
+ event_id = c2_wr_get_id(wr);
+ resource_indicator = be32_to_cpu(wr->ae.ae_generic.resource_type);
+ resource_user_context =
+ (void *) (unsigned long) wr->ae.ae_generic.user_context;
+
+ status = cm_event.status = c2_convert_cm_status(c2_wr_get_result(wr));
+
+ pr_debug("event received c2_dev=%p, event_id=%d, "
+ "resource_indicator=%d, user_context=%p, status = %d\n",
+ c2dev, event_id, resource_indicator, resource_user_context,
+ status);
+
+ switch (resource_indicator) {
+ case C2_RES_IND_QP:{
+
+ struct c2_qp *qp = (struct c2_qp *)resource_user_context;
+ struct iw_cm_id *cm_id = qp->cm_id;
+ struct c2wr_ae_active_connect_results *res;
+
+ if (!cm_id) {
+ pr_debug("event received, but cm_id is <nul>, qp=%p!\n",
+ qp);
+ goto ignore_it;
+ }
+ pr_debug("%s: event = %s, user_context=%llx, "
+ "resource_type=%x, "
+ "resource=%x, qp_state=%s\n",
+ __FUNCTION__,
+ to_event_str(event_id),
+ be64_to_cpu(wr->ae.ae_generic.user_context),
+ be32_to_cpu(wr->ae.ae_generic.resource_type),
+ be32_to_cpu(wr->ae.ae_generic.resource),
+ to_qp_state_str(be32_to_cpu(wr->ae.ae_generic.qp_state)));
+
+ c2_set_qp_state(qp, be32_to_cpu(wr->ae.ae_generic.qp_state));
+
+ switch (event_id) {
+ case CCAE_ACTIVE_CONNECT_RESULTS:
+ res = &wr->ae.ae_active_connect_results;
+ cm_event.event = IW_CM_EVENT_CONNECT_REPLY;
+ cm_event.local_addr.sin_addr.s_addr = res->laddr;
+ cm_event.remote_addr.sin_addr.s_addr = res->raddr;
+ cm_event.local_addr.sin_port = res->lport;
+ cm_event.remote_addr.sin_port = res->rport;
+ if (status == 0) {
+ cm_event.private_data_len =
+ be32_to_cpu(res->private_data_length);
+ cm_event.private_data = res->private_data;
+ } else {
+ spin_lock_irqsave(&qp->lock, flags);
+ if (qp->cm_id) {
+ qp->cm_id->rem_ref(qp->cm_id);
+ qp->cm_id = NULL;
+ }
+ spin_unlock_irqrestore(&qp->lock, flags);
+ cm_event.private_data_len = 0;
+ cm_event.private_data = NULL;
+ }
+ if (cm_id->event_handler)
+ cm_id->event_handler(cm_id, &cm_event);
+ break;
+ case CCAE_TERMINATE_MESSAGE_RECEIVED:
+ case CCAE_CQ_SQ_COMPLETION_OVERFLOW:
+ ib_event.device = &c2dev->ibdev;
+ ib_event.element.qp = &qp->ibqp;
+ ib_event.event = IB_EVENT_QP_REQ_ERR;
+
+ if (qp->ibqp.event_handler)
+ qp->ibqp.event_handler(&ib_event,
+ qp->ibqp.
+ qp_context);
+ break;
+ case CCAE_BAD_CLOSE:
+ case CCAE_LLP_CLOSE_COMPLETE:
+ case CCAE_LLP_CONNECTION_RESET:
+ case CCAE_LLP_CONNECTION_LOST:
+ BUG_ON(cm_id->event_handler==(void*)0x6b6b6b6b);
+
+ spin_lock_irqsave(&qp->lock, flags);
+ if (qp->cm_id) {
+ qp->cm_id->rem_ref(qp->cm_id);
+ qp->cm_id = NULL;
+ }
+ spin_unlock_irqrestore(&qp->lock, flags);
+ cm_event.event = IW_CM_EVENT_CLOSE;
+ cm_event.status = 0;
+ if (cm_id->event_handler)
+ cm_id->event_handler(cm_id, &cm_event);
+ break;
+ default:
+ BUG_ON(1);
+ pr_debug("%s:%d Unexpected event_id=%d on QP=%p, "
+ "CM_ID=%p\n",
+ __FUNCTION__, __LINE__,
+ event_id, qp, cm_id);
+ break;
+ }
+ break;
+ }
+
+ case C2_RES_IND_EP:{
+
+ struct c2wr_ae_connection_request *req =
+ &wr->ae.ae_connection_request;
+ struct iw_cm_id *cm_id =
+ (struct iw_cm_id *)resource_user_context;
+
+ pr_debug("C2_RES_IND_EP event_id=%d\n", event_id);
+ if (event_id != CCAE_CONNECTION_REQUEST) {
+ pr_debug("%s: Invalid event_id: %d\n",
+ __FUNCTION__, event_id);
+ break;
+ }
+ cm_event.event = IW_CM_EVENT_CONNECT_REQUEST;
+ cm_event.provider_data = (void*)(unsigned long)req->cr_handle;
+ cm_event.local_addr.sin_addr.s_addr = req->laddr;
+ cm_event.remote_addr.sin_addr.s_addr = req->raddr;
+ cm_event.local_addr.sin_port = req->lport;
+ cm_event.remote_addr.sin_port = req->rport;
+ cm_event.private_data_len =
+ be32_to_cpu(req->private_data_length);
+ cm_event.private_data = req->private_data;
+
+ if (cm_id->event_handler)
+ cm_id->event_handler(cm_id, &cm_event);
+ break;
+ }
+
+ case C2_RES_IND_CQ:{
+ struct c2_cq *cq =
+ (struct c2_cq *) resource_user_context;
+
+ pr_debug("IB_EVENT_CQ_ERR\n");
+ ib_event.device = &c2dev->ibdev;
+ ib_event.element.cq = &cq->ibcq;
+ ib_event.event = IB_EVENT_CQ_ERR;
+
+ if (cq->ibcq.event_handler)
+ cq->ibcq.event_handler(&ib_event,
+ cq->ibcq.cq_context);
+ }
+
+ default:
+ printk("Bad resource indicator = %d\n",
+ resource_indicator);
+ break;
+ }
+
+ ignore_it:
+ c2_mq_free(mq);
+}