Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.h b/drivers/infiniband/hw/mthca/mthca_memfree.h
new file mode 100644
index 0000000..a8fa97e
--- /dev/null
+++ b/drivers/infiniband/hw/mthca/mthca_memfree.h
@@ -0,0 +1,161 @@
+/*
+ * Copyright (c) 2004, 2005 Topspin Communications. 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.
+ *
+ * $Id$
+ */
+
+#ifndef MTHCA_MEMFREE_H
+#define MTHCA_MEMFREE_H
+
+#include <linux/list.h>
+#include <linux/pci.h>
+
+#include <asm/semaphore.h>
+
+#define MTHCA_ICM_CHUNK_LEN \
+ ((256 - sizeof (struct list_head) - 2 * sizeof (int)) / \
+ (sizeof (struct scatterlist)))
+
+struct mthca_icm_chunk {
+ struct list_head list;
+ int npages;
+ int nsg;
+ struct scatterlist mem[MTHCA_ICM_CHUNK_LEN];
+};
+
+struct mthca_icm {
+ struct list_head chunk_list;
+ int refcount;
+};
+
+struct mthca_icm_table {
+ u64 virt;
+ int num_icm;
+ int num_obj;
+ int obj_size;
+ int lowmem;
+ struct semaphore mutex;
+ struct mthca_icm *icm[0];
+};
+
+struct mthca_icm_iter {
+ struct mthca_icm *icm;
+ struct mthca_icm_chunk *chunk;
+ int page_idx;
+};
+
+struct mthca_dev;
+
+struct mthca_icm *mthca_alloc_icm(struct mthca_dev *dev, int npages,
+ unsigned int gfp_mask);
+void mthca_free_icm(struct mthca_dev *dev, struct mthca_icm *icm);
+
+struct mthca_icm_table *mthca_alloc_icm_table(struct mthca_dev *dev,
+ u64 virt, int obj_size,
+ int nobj, int reserved,
+ int use_lowmem);
+void mthca_free_icm_table(struct mthca_dev *dev, struct mthca_icm_table *table);
+int mthca_table_get(struct mthca_dev *dev, struct mthca_icm_table *table, int obj);
+void mthca_table_put(struct mthca_dev *dev, struct mthca_icm_table *table, int obj);
+
+static inline void mthca_icm_first(struct mthca_icm *icm,
+ struct mthca_icm_iter *iter)
+{
+ iter->icm = icm;
+ iter->chunk = list_empty(&icm->chunk_list) ?
+ NULL : list_entry(icm->chunk_list.next,
+ struct mthca_icm_chunk, list);
+ iter->page_idx = 0;
+}
+
+static inline int mthca_icm_last(struct mthca_icm_iter *iter)
+{
+ return !iter->chunk;
+}
+
+static inline void mthca_icm_next(struct mthca_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 mthca_icm_chunk, list);
+ iter->page_idx = 0;
+ }
+}
+
+static inline dma_addr_t mthca_icm_addr(struct mthca_icm_iter *iter)
+{
+ return sg_dma_address(&iter->chunk->mem[iter->page_idx]);
+}
+
+static inline unsigned long mthca_icm_size(struct mthca_icm_iter *iter)
+{
+ return sg_dma_len(&iter->chunk->mem[iter->page_idx]);
+}
+
+enum {
+ MTHCA_DB_REC_PER_PAGE = 4096 / 8
+};
+
+struct mthca_db_page {
+ DECLARE_BITMAP(used, MTHCA_DB_REC_PER_PAGE);
+ u64 *db_rec;
+ dma_addr_t mapping;
+};
+
+struct mthca_db_table {
+ int npages;
+ int max_group1;
+ int min_group2;
+ struct mthca_db_page *page;
+ struct semaphore mutex;
+};
+
+enum {
+ MTHCA_DB_TYPE_INVALID = 0x0,
+ MTHCA_DB_TYPE_CQ_SET_CI = 0x1,
+ MTHCA_DB_TYPE_CQ_ARM = 0x2,
+ MTHCA_DB_TYPE_SQ = 0x3,
+ MTHCA_DB_TYPE_RQ = 0x4,
+ MTHCA_DB_TYPE_SRQ = 0x5,
+ MTHCA_DB_TYPE_GROUP_SEP = 0x7
+};
+
+int mthca_init_db_tab(struct mthca_dev *dev);
+void mthca_cleanup_db_tab(struct mthca_dev *dev);
+int mthca_alloc_db(struct mthca_dev *dev, int type, u32 qn, u32 **db);
+void mthca_free_db(struct mthca_dev *dev, int type, int db_index);
+
+#endif /* MTHCA_MEMFREE_H */