diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/user_sdma.h')
| -rw-r--r-- | drivers/staging/rdma/hfi1/user_sdma.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/staging/rdma/hfi1/user_sdma.h b/drivers/staging/rdma/hfi1/user_sdma.h new file mode 100644 index 000000000000..fa4422553e23 --- /dev/null +++ b/drivers/staging/rdma/hfi1/user_sdma.h @@ -0,0 +1,89 @@ +/* + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * Copyright(c) 2015 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Copyright(c) 2015 Intel Corporation. + * + * 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. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include <linux/device.h> +#include <linux/wait.h> + +#include "common.h" +#include "iowait.h" + +#define EXP_TID_TIDLEN_MASK 0x7FFULL +#define EXP_TID_TIDLEN_SHIFT 0 +#define EXP_TID_TIDCTRL_MASK 0x3ULL +#define EXP_TID_TIDCTRL_SHIFT 20 +#define EXP_TID_TIDIDX_MASK 0x7FFULL +#define EXP_TID_TIDIDX_SHIFT 22 +#define EXP_TID_GET(tid, field) \ + (((tid) >> EXP_TID_TID##field##_SHIFT) & EXP_TID_TID##field##_MASK) + +extern uint extended_psn; + +struct hfi1_user_sdma_pkt_q { + struct list_head list; + unsigned ctxt; + unsigned subctxt; + u16 n_max_reqs; + atomic_t n_reqs; + u16 reqidx; + struct hfi1_devdata *dd; + struct kmem_cache *txreq_cache; + struct user_sdma_request *reqs; + struct iowait busy; + unsigned state; +}; + +struct hfi1_user_sdma_comp_q { + u16 nentries; + struct hfi1_sdma_comp_entry *comps; +}; + +int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *, struct file *); +int hfi1_user_sdma_free_queues(struct hfi1_filedata *); +int hfi1_user_sdma_process_request(struct file *, struct iovec *, unsigned long, + unsigned long *); |