Merge branch 'master' into upstream

Conflicts:

	net/ieee80211/ieee80211_crypt_tkip.c
	net/ieee80211/ieee80211_crypt_wep.c

1 files changed, 209 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/amso1100/c2_intr.c b/drivers/infiniband/hw/amso1100/c2_intr.c
new file mode 100644
index 000000000000..0d0bc33ca30a
--- /dev/null
+++ b/drivers/infiniband/hw/amso1100/c2_intr.c
@@ -0,0 +1,209 @@
+/*
+ * 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_vq.h"
+
+static void handle_mq(struct c2_dev *c2dev, u32 index);
+static void handle_vq(struct c2_dev *c2dev, u32 mq_index);
+
+/*
+ * Handle RNIC interrupts
+ */
+void c2_rnic_interrupt(struct c2_dev *c2dev)
+{
+        unsigned int mq_index;
+
+        while (c2dev->hints_read != be16_to_cpu(*c2dev->hint_count)) {
+                mq_index = readl(c2dev->regs + PCI_BAR0_HOST_HINT);
+                if (mq_index & 0x80000000) {
+                        break;
+                }
+
+                c2dev->hints_read++;
+                handle_mq(c2dev, mq_index);
+        }
+
+}
+
+/*
+ * Top level MQ handler
+ */
+static void handle_mq(struct c2_dev *c2dev, u32 mq_index)
+{
+        if (c2dev->qptr_array[mq_index] == NULL) {
+                pr_debug(KERN_INFO "handle_mq: stray activity for mq_index=%d\n",
+                        mq_index);
+                return;
+        }
+
+        switch (mq_index) {
+        case (0):
+                /*
+                 * An index of 0 in the activity queue
+                 * indicates the req vq now has messages
+                 * available...
+                 *
+                 * Wake up any waiters waiting on req VQ
+                 * message availability.
+                 */
+                wake_up(&c2dev->req_vq_wo);
+                break;
+        case (1):
+                handle_vq(c2dev, mq_index);
+                break;
+        case (2):
+                /* We have to purge the VQ in case there are pending
+                 * accept reply requests that would result in the
+                 * generation of an ESTABLISHED event. If we don't
+                 * generate these first, a CLOSE event could end up
+                 * being delivered before the ESTABLISHED event.
+                 */
+                handle_vq(c2dev, 1);
+
+                c2_ae_event(c2dev, mq_index);
+                break;
+        default:
+                /* There is no event synchronization between CQ events
+                 * and AE or CM events. In fact, CQE could be
+                 * delivered for all of the I/O up to and including the
+                 * FLUSH for a peer disconenct prior to the ESTABLISHED
+                 * event being delivered to the app. The reason for this
+                 * is that CM events are delivered on a thread, while AE
+                 * and CM events are delivered on interrupt context.
+                 */
+                c2_cq_event(c2dev, mq_index);
+                break;
+        }
+
+        return;
+}
+
+/*
+ * Handles verbs WR replies.
+ */
+static void handle_vq(struct c2_dev *c2dev, u32 mq_index)
+{
+        void *adapter_msg, *reply_msg;
+        struct c2wr_hdr *host_msg;
+        struct c2wr_hdr tmp;
+        struct c2_mq *reply_vq;
+        struct c2_vq_req *req;
+        struct iw_cm_event cm_event;
+        int err;
+
+        reply_vq = (struct c2_mq *) c2dev->qptr_array[mq_index];
+
+        /*
+         * get next msg from mq_index into adapter_msg.
+         * don't free it yet.
+         */
+        adapter_msg = c2_mq_consume(reply_vq);
+        if (adapter_msg == NULL) {
+                return;
+        }
+
+        host_msg = vq_repbuf_alloc(c2dev);
+
+        /*
+         * If we can't get a host buffer, then we'll still
+         * wakeup the waiter, we just won't give him the msg.
+         * It is assumed the waiter will deal with this...
+         */
+        if (!host_msg) {
+                pr_debug("handle_vq: no repbufs!\n");
+
+                /*
+                 * just copy the WR header into a local variable.
+                 * this allows us to still demux on the context
+                 */
+                host_msg = &tmp;
+                memcpy(host_msg, adapter_msg, sizeof(tmp));
+                reply_msg = NULL;
+        } else {
+                memcpy(host_msg, adapter_msg, reply_vq->msg_size);
+                reply_msg = host_msg;
+        }
+
+        /*
+         * consume the msg from the MQ
+         */
+        c2_mq_free(reply_vq);
+
+        /*
+         * wakeup the waiter.
+         */
+        req = (struct c2_vq_req *) (unsigned long) host_msg->context;
+        if (req == NULL) {
+                /*
+                 * We should never get here, as the adapter should
+                 * never send us a reply that we're not expecting.
+                 */
+                vq_repbuf_free(c2dev, host_msg);
+                pr_debug("handle_vq: UNEXPECTEDLY got NULL req\n");
+                return;
+        }
+
+        err = c2_errno(reply_msg);
+        if (!err) switch (req->event) {
+        case IW_CM_EVENT_ESTABLISHED:
+                c2_set_qp_state(req->qp,
+                                C2_QP_STATE_RTS);
+        case IW_CM_EVENT_CLOSE:
+
+                /*
+                 * Move the QP to RTS if this is
+                 * the established event
+                 */
+                cm_event.event = req->event;
+                cm_event.status = 0;
+                cm_event.local_addr = req->cm_id->local_addr;
+                cm_event.remote_addr = req->cm_id->remote_addr;
+                cm_event.private_data = NULL;
+                cm_event.private_data_len = 0;
+                req->cm_id->event_handler(req->cm_id, &cm_event);
+                break;
+        default:
+                break;
+        }
+
+        req->reply_msg = (u64) (unsigned long) (reply_msg);
+        atomic_set(&req->reply_ready, 1);
+        wake_up(&req->wait_object);
+
+        /*
+         * If the request was cancelled, then this put will
+         * free the vq_req memory...and reply_msg!!!
+         */
+        vq_req_put(c2dev, req);
+}