2 * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
3 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #include <linux/kernel.h>
37 #include <linux/dma-mapping.h>
42 C2_SHARED_ARMED = 0x10,
43 C2_SHARED_NOTIFY = 0x18,
44 C2_SHARED_SHARED = 0x40,
53 /* Pad to 64 bytes. */
54 u8 pad[64 - sizeof(u16) - 2 * sizeof(u8) - sizeof(u32) - sizeof(u16)];
58 C2_MQ_HOST_TARGET = 1,
59 C2_MQ_ADAPTER_TARGET = 2,
63 * c2_mq_t is for kernel-mode MQs like the VQs Cand the AEQ.
64 * c2_user_mq_t (which is the same format) is for user-mode MQs...
66 #define C2_MQ_MAGIC 0x4d512020 /* 'MQ ' */
74 DECLARE_PCI_UNMAP_ADDR(mapping);
77 struct c2_mq_shared __iomem *peer;
79 dma_addr_t shared_dma;
86 static __inline__ int c2_mq_empty(struct c2_mq *q)
88 return q->priv == be16_to_cpu(*q->shared);
91 static __inline__ int c2_mq_full(struct c2_mq *q)
93 return q->priv == (be16_to_cpu(*q->shared) + q->q_size - 1) % q->q_size;
96 extern void c2_mq_lconsume(struct c2_mq *q, u32 wqe_count);
97 extern void *c2_mq_alloc(struct c2_mq *q);
98 extern void c2_mq_produce(struct c2_mq *q);
99 extern void *c2_mq_consume(struct c2_mq *q);
100 extern void c2_mq_free(struct c2_mq *q);
101 extern void c2_mq_req_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size,
102 u8 __iomem *pool_start, u16 __iomem *peer, u32 type);
103 extern void c2_mq_rep_init(struct c2_mq *q, u32 index, u32 q_size, u32 msg_size,
104 u8 *pool_start, u16 __iomem *peer, u32 type);
106 #endif /* _C2_MQ_H_ */