diff options
Diffstat (limited to 'drivers/infiniband/hw/cxgb3/iwch.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb3/iwch.c | 282 |
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); |