diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/infiniband/hw/amso1100/c2_mq.h | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/infiniband/hw/amso1100/c2_mq.h')
-rw-r--r-- | kernel/drivers/infiniband/hw/amso1100/c2_mq.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/kernel/drivers/infiniband/hw/amso1100/c2_mq.h b/kernel/drivers/infiniband/hw/amso1100/c2_mq.h new file mode 100644 index 000000000..fc1b9a7ce --- /dev/null +++ b/kernel/drivers/infiniband/hw/amso1100/c2_mq.h @@ -0,0 +1,106 @@ +/* + * 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. + */ + +#ifndef _C2_MQ_H_ +#define _C2_MQ_H_ +#include <linux/kernel.h> +#include <linux/dma-mapping.h> +#include "c2_wr.h" + +enum c2_shared_regs { + + C2_SHARED_ARMED = 0x10, + C2_SHARED_NOTIFY = 0x18, + C2_SHARED_SHARED = 0x40, +}; + +struct c2_mq_shared { + u16 unused1; + u8 armed; + u8 notification_type; + u32 unused2; + u16 shared; + /* Pad to 64 bytes. */ + u8 pad[64 - sizeof(u16) - 2 * sizeof(u8) - sizeof(u32) - sizeof(u16)]; +}; + +enum c2_mq_type { + C2_MQ_HOST_TARGET = 1, + C2_MQ_ADAPTER_TARGET = 2, +}; + +/* + * c2_mq_t is for kernel-mode MQs like the VQs Cand the AEQ. + * c2_user_mq_t (which is the same format) is for user-mode MQs... + */ +#define C2_MQ_MAGIC 0x4d512020 /* 'MQ ' */ +struct c2_mq { + u32 magic; + union { + u8 *host; + u8 __iomem *adapter; + } msg_pool; + dma_addr_t host_dma; + DEFINE_DMA_UNMAP_ADDR(mapping); + u16 hint_count; + u16 priv; + struct c2_mq_shared __iomem *peer; + __be16 *shared; + dma_addr_t shared_dma; + u32 q_size; + u32 msg_size; + u32 index; + enum c2_mq_type type; +}; + +static __inline__ int c2_mq_empty(struct c2_mq *q) +{ + return q->priv == be16_to_cpu(*q->shared); +} + +static __inline__ int c2_mq_full(struct c2_mq *q) +{ + return q->priv == (be16_to_cpu(*q->shared) + q->q_size - 1) % q->q_size; +} + +extern void c2_mq_lconsume(struct c2_mq *q, u32 wqe_count); +extern void *c2_mq_alloc(struct c2_mq *q); +extern void c2_mq_produce(struct c2_mq *q); +extern void *c2_mq_consume(struct c2_mq *q); +extern void c2_mq_free(struct c2_mq *q); +extern void c2_mq_req_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, + u8 __iomem *pool_start, u16 __iomem *peer, u32 type); +extern void c2_mq_rep_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size, + u8 *pool_start, u16 __iomem *peer, u32 type); + +#endif /* _C2_MQ_H_ */ |