1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/net/mlx4/icm.h b/drivers/net/mlx4/icm.h
new file mode 100644
index 000000000000..bea223d879a5
--- /dev/null
+++ b/drivers/net/mlx4/icm.h
@@ -0,0 +1,135 @@
+/*
+ * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2006, 2007 Cisco Systems, 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 MLX4_ICM_H
+#define MLX4_ICM_H
+#include <linux/list.h>
+#include <linux/pci.h>
+#include <linux/mutex.h>
+#define MLX4_ICM_CHUNK_LEN                                              \
+        ((256 - sizeof (struct list_head) - 2 * sizeof (int)) /         \
+         (sizeof (struct scatterlist)))
+enum {
+        MLX4_ICM_PAGE_SHIFT     = 12,
+        MLX4_ICM_PAGE_SIZE      = 1 << MLX4_ICM_PAGE_SHIFT,
+};
+struct mlx4_icm_chunk {
+        struct list_head        list;
+        int                     npages;
+        int                     nsg;
+        struct scatterlist      mem[MLX4_ICM_CHUNK_LEN];
+};
+struct mlx4_icm {
+        struct list_head        chunk_list;
+        int                     refcount;
+};
+struct mlx4_icm_iter {
+        struct mlx4_icm        *icm;
+        struct mlx4_icm_chunk  *chunk;
+        int                     page_idx;
+};
+struct mlx4_dev;
+struct mlx4_icm *mlx4_alloc_icm(struct mlx4_dev *dev, int npages, gfp_t gfp_mask);
+void mlx4_free_icm(struct mlx4_dev *dev, struct mlx4_icm *icm);
+int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
+void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
+int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
+                         int start, int end);
+void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
+                          int start, int end);
+int mlx4_init_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table,
+                        u64 virt, int obj_size, int nobj, int reserved,
+                        int use_lowmem);
+void mlx4_cleanup_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table);
+int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
+void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
+void *mlx4_table_find(struct mlx4_icm_table *table, int obj);
+int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
+                         int start, int end);
+void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
+                          int start, int end);
+static inline void mlx4_icm_first(struct mlx4_icm *icm,
+                                  struct mlx4_icm_iter *iter)
+{
+        iter->icm      = icm;
+        iter->chunk    = list_empty(&icm->chunk_list) ?
+                NULL : list_entry(icm->chunk_list.next,
+                                  struct mlx4_icm_chunk, list);
+        iter->page_idx = 0;
+}
+static inline int mlx4_icm_last(struct mlx4_icm_iter *iter)
+{
+        return !iter->chunk;
+}
+static inline void mlx4_icm_next(struct mlx4_icm_iter *iter)
+{
+        if (++iter->page_idx >= iter->chunk->nsg) {
+                if (iter->chunk->list.next == &iter->icm->chunk_list) {
+                        iter->chunk = NULL;
+                        return;
+                }
+                iter->chunk = list_entry(iter->chunk->list.next,
+                                         struct mlx4_icm_chunk, list);
+                iter->page_idx = 0;
+        }
+}
+static inline dma_addr_t mlx4_icm_addr(struct mlx4_icm_iter *iter)
+{
+        return sg_dma_address(&iter->chunk->mem[iter->page_idx]);
+}
+static inline unsigned long mlx4_icm_size(struct mlx4_icm_iter *iter)
+{
+        return sg_dma_len(&iter->chunk->mem[iter->page_idx]);
+}
+int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count);
+int mlx4_MAP_ICM_page(struct mlx4_dev *dev, u64 dma_addr, u64 virt);
+int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm);
+int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev);
+#endif /* MLX4_ICM_H */

diff --git a/drivers/net/mlx4/icm.h b/drivers/net/mlx4/icm.h new file mode 100644 index 000000000000..bea223d879a5 --- /dev/null +++ b/drivers/net/mlx4/icm.h
@@ -0,0 +1,135 @@
	1	/*
	2	* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
	3	* Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved.
	4	*
	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:
	10	*
	11	* Redistribution and use in source and binary forms, with or
	12	* without modification, are permitted provided that the following
	13	* conditions are met:
	14	*
	15	* - Redistributions of source code must retain the above
	16	* copyright notice, this list of conditions and the following
	17	* disclaimer.
	18	*
	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.
	23	*
	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
	31	* SOFTWARE.
	32	*/
	33
	34	#ifndef MLX4_ICM_H
	35	#define MLX4_ICM_H
	36
	37	#include <linux/list.h>
	38	#include <linux/pci.h>
	39	#include <linux/mutex.h>
	40
	41	#define MLX4_ICM_CHUNK_LEN \
	42	((256 - sizeof (struct list_head) - 2 * sizeof (int)) / \
	43	(sizeof (struct scatterlist)))
	44
	45	enum {
	46	MLX4_ICM_PAGE_SHIFT = 12,
	47	MLX4_ICM_PAGE_SIZE = 1 << MLX4_ICM_PAGE_SHIFT,
	48	};
	49
	50	struct mlx4_icm_chunk {
	51	struct list_head list;
	52	int npages;
	53	int nsg;
	54	struct scatterlist mem[MLX4_ICM_CHUNK_LEN];
	55	};
	56
	57	struct mlx4_icm {
	58	struct list_head chunk_list;
	59	int refcount;
	60	};
	61
	62	struct mlx4_icm_iter {
	63	struct mlx4_icm *icm;
	64	struct mlx4_icm_chunk *chunk;
	65	int page_idx;
	66	};
	67
	68	struct mlx4_dev;
	69
	70	struct mlx4_icm mlx4_alloc_icm(struct mlx4_dev dev, int npages, gfp_t gfp_mask);
	71	void mlx4_free_icm(struct mlx4_dev dev, struct mlx4_icm icm);
	72
	73	int mlx4_table_get(struct mlx4_dev dev, struct mlx4_icm_table table, int obj);
	74	void mlx4_table_put(struct mlx4_dev dev, struct mlx4_icm_table table, int obj);
	75	int mlx4_table_get_range(struct mlx4_dev dev, struct mlx4_icm_table table,
	76	int start, int end);
	77	void mlx4_table_put_range(struct mlx4_dev dev, struct mlx4_icm_table table,
	78	int start, int end);
	79	int mlx4_init_icm_table(struct mlx4_dev dev, struct mlx4_icm_table table,
	80	u64 virt, int obj_size, int nobj, int reserved,
	81	int use_lowmem);
	82	void mlx4_cleanup_icm_table(struct mlx4_dev dev, struct mlx4_icm_table table);
	83	int mlx4_table_get(struct mlx4_dev dev, struct mlx4_icm_table table, int obj);
	84	void mlx4_table_put(struct mlx4_dev dev, struct mlx4_icm_table table, int obj);
	85	void mlx4_table_find(struct mlx4_icm_table table, int obj);
	86	int mlx4_table_get_range(struct mlx4_dev dev, struct mlx4_icm_table table,
	87	int start, int end);
	88	void mlx4_table_put_range(struct mlx4_dev dev, struct mlx4_icm_table table,
	89	int start, int end);
	90
	91	static inline void mlx4_icm_first(struct mlx4_icm *icm,
	92	struct mlx4_icm_iter *iter)
	93	{
	94	iter->icm = icm;
	95	iter->chunk = list_empty(&icm->chunk_list) ?
	96	NULL : list_entry(icm->chunk_list.next,
	97	struct mlx4_icm_chunk, list);
	98	iter->page_idx = 0;
	99	}
	100
	101	static inline int mlx4_icm_last(struct mlx4_icm_iter *iter)
	102	{
	103	return !iter->chunk;
	104	}
	105
	106	static inline void mlx4_icm_next(struct mlx4_icm_iter *iter)
	107	{
	108	if (++iter->page_idx >= iter->chunk->nsg) {
	109	if (iter->chunk->list.next == &iter->icm->chunk_list) {
	110	iter->chunk = NULL;
	111	return;
	112	}
	113
	114	iter->chunk = list_entry(iter->chunk->list.next,
	115	struct mlx4_icm_chunk, list);
	116	iter->page_idx = 0;
	117	}
	118	}
	119
	120	static inline dma_addr_t mlx4_icm_addr(struct mlx4_icm_iter *iter)
	121	{
	122	return sg_dma_address(&iter->chunk->mem[iter->page_idx]);
	123	}
	124
	125	static inline unsigned long mlx4_icm_size(struct mlx4_icm_iter *iter)
	126	{
	127	return sg_dma_len(&iter->chunk->mem[iter->page_idx]);
	128	}
	129
	130	int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count);
	131	int mlx4_MAP_ICM_page(struct mlx4_dev *dev, u64 dma_addr, u64 virt);
	132	int mlx4_MAP_ICM_AUX(struct mlx4_dev dev, struct mlx4_icm icm);
	133	int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev);
	134
	135	#endif /* MLX4_ICM_H */