This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / infiniband / hw / amso1100 / c2_mq.h

diff --git a/drivers/infiniband/hw/amso1100/c2_mq.h b/drivers/infiniband/hw/amso1100/c2_mq.h
new file mode 100644 (file)
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+++ b/drivers/infiniband/hw/amso1100/c2_mq.h
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+/*
+ * 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;
+       DECLARE_PCI_UNMAP_ADDR(mapping);
+       u16 hint_count;
+       u16 priv;
+       struct c2_mq_shared __iomem *peer;
+       u16 *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_ */