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179 lines
5.6 KiB
179 lines
5.6 KiB
/* |
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* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. |
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* Copyright (c) 2005 Cisco Systems. All rights reserved. |
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* Copyright (c) 2005 Mellanox Technologies. All rights reserved. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the |
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* OpenIB.org BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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#ifndef MTHCA_MEMFREE_H |
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#define MTHCA_MEMFREE_H |
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#include <linux/list.h> |
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#include <linux/mutex.h> |
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#define MTHCA_ICM_CHUNK_LEN \ |
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((256 - sizeof (struct list_head) - 2 * sizeof (int)) / \ |
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(sizeof (struct scatterlist))) |
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enum { |
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MTHCA_ICM_PAGE_SHIFT = 12, |
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MTHCA_ICM_PAGE_SIZE = 1 << MTHCA_ICM_PAGE_SHIFT, |
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MTHCA_DB_REC_PER_PAGE = MTHCA_ICM_PAGE_SIZE / 8 |
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}; |
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struct mthca_icm_chunk { |
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struct list_head list; |
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int npages; |
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int nsg; |
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struct scatterlist mem[MTHCA_ICM_CHUNK_LEN]; |
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}; |
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struct mthca_icm { |
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struct list_head chunk_list; |
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int refcount; |
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}; |
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struct mthca_icm_table { |
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u64 virt; |
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int num_icm; |
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int num_obj; |
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int obj_size; |
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int lowmem; |
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int coherent; |
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struct mutex mutex; |
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struct mthca_icm *icm[]; |
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}; |
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struct mthca_icm_iter { |
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struct mthca_icm *icm; |
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struct mthca_icm_chunk *chunk; |
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int page_idx; |
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}; |
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struct mthca_dev; |
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struct mthca_icm *mthca_alloc_icm(struct mthca_dev *dev, int npages, |
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gfp_t gfp_mask, int coherent); |
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void mthca_free_icm(struct mthca_dev *dev, struct mthca_icm *icm, int coherent); |
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struct mthca_icm_table *mthca_alloc_icm_table(struct mthca_dev *dev, |
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u64 virt, int obj_size, |
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int nobj, int reserved, |
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int use_lowmem, int use_coherent); |
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void mthca_free_icm_table(struct mthca_dev *dev, struct mthca_icm_table *table); |
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int mthca_table_get(struct mthca_dev *dev, struct mthca_icm_table *table, int obj); |
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void mthca_table_put(struct mthca_dev *dev, struct mthca_icm_table *table, int obj); |
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void *mthca_table_find(struct mthca_icm_table *table, int obj, dma_addr_t *dma_handle); |
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int mthca_table_get_range(struct mthca_dev *dev, struct mthca_icm_table *table, |
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int start, int end); |
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void mthca_table_put_range(struct mthca_dev *dev, struct mthca_icm_table *table, |
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int start, int end); |
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static inline void mthca_icm_first(struct mthca_icm *icm, |
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struct mthca_icm_iter *iter) |
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{ |
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iter->icm = icm; |
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iter->chunk = list_empty(&icm->chunk_list) ? |
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NULL : list_entry(icm->chunk_list.next, |
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struct mthca_icm_chunk, list); |
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iter->page_idx = 0; |
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} |
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static inline int mthca_icm_last(struct mthca_icm_iter *iter) |
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{ |
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return !iter->chunk; |
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} |
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static inline void mthca_icm_next(struct mthca_icm_iter *iter) |
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{ |
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if (++iter->page_idx >= iter->chunk->nsg) { |
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if (iter->chunk->list.next == &iter->icm->chunk_list) { |
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iter->chunk = NULL; |
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return; |
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} |
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iter->chunk = list_entry(iter->chunk->list.next, |
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struct mthca_icm_chunk, list); |
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iter->page_idx = 0; |
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} |
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} |
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static inline dma_addr_t mthca_icm_addr(struct mthca_icm_iter *iter) |
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{ |
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return sg_dma_address(&iter->chunk->mem[iter->page_idx]); |
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} |
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static inline unsigned long mthca_icm_size(struct mthca_icm_iter *iter) |
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{ |
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return sg_dma_len(&iter->chunk->mem[iter->page_idx]); |
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} |
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struct mthca_db_page { |
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DECLARE_BITMAP(used, MTHCA_DB_REC_PER_PAGE); |
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__be64 *db_rec; |
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dma_addr_t mapping; |
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}; |
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struct mthca_db_table { |
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int npages; |
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int max_group1; |
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int min_group2; |
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struct mthca_db_page *page; |
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struct mutex mutex; |
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}; |
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enum mthca_db_type { |
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MTHCA_DB_TYPE_INVALID = 0x0, |
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MTHCA_DB_TYPE_CQ_SET_CI = 0x1, |
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MTHCA_DB_TYPE_CQ_ARM = 0x2, |
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MTHCA_DB_TYPE_SQ = 0x3, |
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MTHCA_DB_TYPE_RQ = 0x4, |
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MTHCA_DB_TYPE_SRQ = 0x5, |
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MTHCA_DB_TYPE_GROUP_SEP = 0x7 |
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}; |
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struct mthca_user_db_table; |
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struct mthca_uar; |
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int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar, |
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struct mthca_user_db_table *db_tab, int index, u64 uaddr); |
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void mthca_unmap_user_db(struct mthca_dev *dev, struct mthca_uar *uar, |
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struct mthca_user_db_table *db_tab, int index); |
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struct mthca_user_db_table *mthca_init_user_db_tab(struct mthca_dev *dev); |
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void mthca_cleanup_user_db_tab(struct mthca_dev *dev, struct mthca_uar *uar, |
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struct mthca_user_db_table *db_tab); |
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int mthca_init_db_tab(struct mthca_dev *dev); |
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void mthca_cleanup_db_tab(struct mthca_dev *dev); |
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int mthca_alloc_db(struct mthca_dev *dev, enum mthca_db_type type, |
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u32 qn, __be32 **db); |
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void mthca_free_db(struct mthca_dev *dev, int type, int db_index); |
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#endif /* MTHCA_MEMFREE_H */
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