tree 2d3127501eb7ec1afcd88b071af5c53988cef132
parent b8ca06f674ab5d7853d7de892c09bdc4c1bfb069
author Michael S. Tsirkin <[EMAIL PROTECTED]> Sun, 17 Apr 2005 05:26:29 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Sun, 17 Apr 2005 05:26:29 -0700
[PATCH] IB/mthca: add mthca_table_find() function
Add mthca_table_find() function, which returns the lowmem address of an entry
in a mem-free HCA's context tables. This will be used by the FMR
implementation.
Signed-off-by: Michael S. Tsirkin <[EMAIL PROTECTED]>
Signed-off-by: Roland Dreier <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
infiniband/hw/mthca/mthca_memfree.c | 34 ++++++++++++++++++++++++++++++++++
infiniband/hw/mthca/mthca_memfree.h | 1 +
2 files changed, 35 insertions(+)
Index: drivers/infiniband/hw/mthca/mthca_memfree.c
===================================================================
---
6215a5c73db4a7e09df62d02a340938d0bff498c/drivers/infiniband/hw/mthca/mthca_memfree.c
(mode:100644 sha1:46981d48c23253cc26e062c860444fb683185978)
+++
2d3127501eb7ec1afcd88b071af5c53988cef132/drivers/infiniband/hw/mthca/mthca_memfree.c
(mode:100644 sha1:ea45de8c5b8eca75d0ea79e12100e198549b05e8)
@@ -192,6 +192,40 @@
up(&table->mutex);
}
+void *mthca_table_find(struct mthca_icm_table *table, int obj)
+{
+ int idx, offset, i;
+ struct mthca_icm_chunk *chunk;
+ struct mthca_icm *icm;
+ struct page *page = NULL;
+
+ if (!table->lowmem)
+ return NULL;
+
+ down(&table->mutex);
+
+ idx = (obj & (table->num_obj - 1)) * table->obj_size;
+ icm = table->icm[idx / MTHCA_TABLE_CHUNK_SIZE];
+ offset = idx % MTHCA_TABLE_CHUNK_SIZE;
+
+ if (!icm)
+ goto out;
+
+ list_for_each_entry(chunk, &icm->chunk_list, list) {
+ for (i = 0; i < chunk->npages; ++i) {
+ if (chunk->mem[i].length >= offset) {
+ page = chunk->mem[i].page;
+ break;
+ }
+ offset -= chunk->mem[i].length;
+ }
+ }
+
+out:
+ up(&table->mutex);
+ return page ? lowmem_page_address(page) + offset : NULL;
+}
+
int mthca_table_get_range(struct mthca_dev *dev, struct mthca_icm_table *table,
int start, int end)
{
Index: drivers/infiniband/hw/mthca/mthca_memfree.h
===================================================================
---
6215a5c73db4a7e09df62d02a340938d0bff498c/drivers/infiniband/hw/mthca/mthca_memfree.h
(mode:100644 sha1:ef72e430250acae35e4b7d09969a03da20734493)
+++
2d3127501eb7ec1afcd88b071af5c53988cef132/drivers/infiniband/hw/mthca/mthca_memfree.h
(mode:100644 sha1:fe7be2a6bc4a80c56cc8ae4a8eadb4ef290e6570)
@@ -85,6 +85,7 @@
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);
+void *mthca_table_find(struct mthca_icm_table *table, int obj);
int mthca_table_get_range(struct mthca_dev *dev, struct mthca_icm_table *table,
int start, int end);
void mthca_table_put_range(struct mthca_dev *dev, struct mthca_icm_table
*table,
-
To unsubscribe from this list: send the line "unsubscribe bk-commits-head" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
