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Diffstat (limited to 'drivers/infiniband/hw/cxgb3/iwch.c')
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch.c b/drivers/infiniband/hw/cxgb3/iwch.c
deleted file mode 100644
index 56a8ab6210cf..000000000000
--- a/drivers/infiniband/hw/cxgb3/iwch.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- * Copyright (c) 2006 Chelsio, 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 <linux/module.h>
-#include <linux/moduleparam.h>
-
-#include <rdma/ib_verbs.h>
-
-#include "cxgb3_offload.h"
-#include "iwch_provider.h"
-#include <rdma/cxgb3-abi.h>
-#include "iwch.h"
-#include "iwch_cm.h"
-
-#define DRV_VERSION "1.1"
-
-MODULE_AUTHOR("Boyd Faulkner, Steve Wise");
-MODULE_DESCRIPTION("Chelsio T3 RDMA Driver");
-MODULE_LICENSE("Dual BSD/GPL");
-
-static void open_rnic_dev(struct t3cdev *);
-static void close_rnic_dev(struct t3cdev *);
-static void iwch_event_handler(struct t3cdev *, u32, u32);
-
-struct cxgb3_client t3c_client = {
- .name = "iw_cxgb3",
- .add = open_rnic_dev,
- .remove = close_rnic_dev,
- .handlers = t3c_handlers,
- .redirect = iwch_ep_redirect,
- .event_handler = iwch_event_handler
-};
-
-static LIST_HEAD(dev_list);
-static DEFINE_MUTEX(dev_mutex);
-
-static void disable_dbs(struct iwch_dev *rnicp)
-{
- unsigned long index;
- struct iwch_qp *qhp;
-
- xa_lock_irq(&rnicp->qps);
- xa_for_each(&rnicp->qps, index, qhp)
- cxio_disable_wq_db(&qhp->wq);
- xa_unlock_irq(&rnicp->qps);
-}
-
-static void enable_dbs(struct iwch_dev *rnicp, int ring_db)
-{
- unsigned long index;
- struct iwch_qp *qhp;
-
- xa_lock_irq(&rnicp->qps);
- xa_for_each(&rnicp->qps, index, qhp) {
- if (ring_db)
- ring_doorbell(qhp->rhp->rdev.ctrl_qp.doorbell,
- qhp->wq.qpid);
- cxio_enable_wq_db(&qhp->wq);
- }
- xa_unlock_irq(&rnicp->qps);
-}
-
-static void iwch_db_drop_task(struct work_struct *work)
-{
- struct iwch_dev *rnicp = container_of(work, struct iwch_dev,
- db_drop_task.work);
- enable_dbs(rnicp, 1);
-}
-
-static void rnic_init(struct iwch_dev *rnicp)
-{
- pr_debug("%s iwch_dev %p\n", __func__, rnicp);
- xa_init_flags(&rnicp->cqs, XA_FLAGS_LOCK_IRQ);
- xa_init_flags(&rnicp->qps, XA_FLAGS_LOCK_IRQ);
- xa_init_flags(&rnicp->mrs, XA_FLAGS_LOCK_IRQ);
- INIT_DELAYED_WORK(&rnicp->db_drop_task, iwch_db_drop_task);
-
- rnicp->attr.max_qps = T3_MAX_NUM_QP - 32;
- rnicp->attr.max_wrs = T3_MAX_QP_DEPTH;
- rnicp->attr.max_sge_per_wr = T3_MAX_SGE;
- rnicp->attr.max_sge_per_rdma_write_wr = T3_MAX_SGE;
- rnicp->attr.max_cqs = T3_MAX_NUM_CQ - 1;
- rnicp->attr.max_cqes_per_cq = T3_MAX_CQ_DEPTH;
- rnicp->attr.max_mem_regs = cxio_num_stags(&rnicp->rdev);
- rnicp->attr.max_phys_buf_entries = T3_MAX_PBL_SIZE;
- rnicp->attr.max_pds = T3_MAX_NUM_PD - 1;
- rnicp->attr.mem_pgsizes_bitmask = T3_PAGESIZE_MASK;
- rnicp->attr.max_mr_size = T3_MAX_MR_SIZE;
- rnicp->attr.can_resize_wq = 0;
- rnicp->attr.max_rdma_reads_per_qp = 8;
- rnicp->attr.max_rdma_read_resources =
- rnicp->attr.max_rdma_reads_per_qp * rnicp->attr.max_qps;
- rnicp->attr.max_rdma_read_qp_depth = 8; /* IRD */
- rnicp->attr.max_rdma_read_depth =
- rnicp->attr.max_rdma_read_qp_depth * rnicp->attr.max_qps;
- rnicp->attr.rq_overflow_handled = 0;
- rnicp->attr.can_modify_ird = 0;
- rnicp->attr.can_modify_ord = 0;
- rnicp->attr.max_mem_windows = rnicp->attr.max_mem_regs - 1;
- rnicp->attr.stag0_value = 1;
- rnicp->attr.zbva_support = 1;
- rnicp->attr.local_invalidate_fence = 1;
- rnicp->attr.cq_overflow_detection = 1;
- return;
-}
-
-static void open_rnic_dev(struct t3cdev *tdev)
-{
- struct iwch_dev *rnicp;
-
- pr_debug("%s t3cdev %p\n", __func__, tdev);
- pr_info_once("Chelsio T3 RDMA Driver - version %s\n", DRV_VERSION);
- rnicp = ib_alloc_device(iwch_dev, ibdev);
- if (!rnicp) {
- pr_err("Cannot allocate ib device\n");
- return;
- }
- rnicp->rdev.ulp = rnicp;
- rnicp->rdev.t3cdev_p = tdev;
-
- mutex_lock(&dev_mutex);
-
- if (cxio_rdev_open(&rnicp->rdev)) {
- mutex_unlock(&dev_mutex);
- pr_err("Unable to open CXIO rdev\n");
- ib_dealloc_device(&rnicp->ibdev);
- return;
- }
-
- rnic_init(rnicp);
-
- list_add_tail(&rnicp->entry, &dev_list);
- mutex_unlock(&dev_mutex);
-
- if (iwch_register_device(rnicp)) {
- pr_err("Unable to register device\n");
- close_rnic_dev(tdev);
- }
- pr_info("Initialized device %s\n",
- pci_name(rnicp->rdev.rnic_info.pdev));
- return;
-}
-
-static void close_rnic_dev(struct t3cdev *tdev)
-{
- struct iwch_dev *dev, *tmp;
- pr_debug("%s t3cdev %p\n", __func__, tdev);
- mutex_lock(&dev_mutex);
- list_for_each_entry_safe(dev, tmp, &dev_list, entry) {
- if (dev->rdev.t3cdev_p == tdev) {
- dev->rdev.flags = CXIO_ERROR_FATAL;
- synchronize_net();
- cancel_delayed_work_sync(&dev->db_drop_task);
- list_del(&dev->entry);
- iwch_unregister_device(dev);
- cxio_rdev_close(&dev->rdev);
- WARN_ON(!xa_empty(&dev->cqs));
- WARN_ON(!xa_empty(&dev->qps));
- WARN_ON(!xa_empty(&dev->mrs));
- ib_dealloc_device(&dev->ibdev);
- break;
- }
- }
- mutex_unlock(&dev_mutex);
-}
-
-static void iwch_event_handler(struct t3cdev *tdev, u32 evt, u32 port_id)
-{
- struct cxio_rdev *rdev = tdev->ulp;
- struct iwch_dev *rnicp;
- struct ib_event event;
- u32 portnum = port_id + 1;
- int dispatch = 0;
-
- if (!rdev)
- return;
- rnicp = rdev_to_iwch_dev(rdev);
- switch (evt) {
- case OFFLOAD_STATUS_DOWN: {
- rdev->flags = CXIO_ERROR_FATAL;
- synchronize_net();
- event.event = IB_EVENT_DEVICE_FATAL;
- dispatch = 1;
- break;
- }
- case OFFLOAD_PORT_DOWN: {
- event.event = IB_EVENT_PORT_ERR;
- dispatch = 1;
- break;
- }
- case OFFLOAD_PORT_UP: {
- event.event = IB_EVENT_PORT_ACTIVE;
- dispatch = 1;
- break;
- }
- case OFFLOAD_DB_FULL: {
- disable_dbs(rnicp);
- break;
- }
- case OFFLOAD_DB_EMPTY: {
- enable_dbs(rnicp, 1);
- break;
- }
- case OFFLOAD_DB_DROP: {
- unsigned long delay = 1000;
- unsigned short r;
-
- disable_dbs(rnicp);
- get_random_bytes(&r, 2);
- delay += r & 1023;
-
- /*
- * delay is between 1000-2023 usecs.
- */
- schedule_delayed_work(&rnicp->db_drop_task,
- usecs_to_jiffies(delay));
- break;
- }
- }
-
- if (dispatch) {
- event.device = &rnicp->ibdev;
- event.element.port_num = portnum;
- ib_dispatch_event(&event);
- }
-
- return;
-}
-
-static int __init iwch_init_module(void)
-{
- int err;
-
- err = cxio_hal_init();
- if (err)
- return err;
- err = iwch_cm_init();
- if (err)
- return err;
- cxio_register_ev_cb(iwch_ev_dispatch);
- cxgb3_register_client(&t3c_client);
- return 0;
-}
-
-static void __exit iwch_exit_module(void)
-{
- cxgb3_unregister_client(&t3c_client);
- cxio_unregister_ev_cb(iwch_ev_dispatch);
- iwch_cm_term();
- cxio_hal_exit();
-}
-
-module_init(iwch_init_module);
-module_exit(iwch_exit_module);