From aa86476edfdc2a44f5e5d74add7b93a0fbef9dc1 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@mellanox.co.il>
Date: Sat, 16 Apr 2005 15:26:29 -0700
Subject: [PATCH] --- yaml --- r: 183 b: refs/heads/master c:
 0fabd9fb7bdc935f121e6950a2c4eff971dd4c75 h: refs/heads/master i:   181:
 6457705c53f9d1a8ae39d6704ef46588007eefe2   179:
 02b01cb63b0a94ff1de9d53c7d80d7e37ecd0215   175:
 0740954d8eb0a2ff75edecae25efd5f1331a2ce9 v: v3

---
 [refs]                                        |  2 +-
 .../infiniband/hw/mthca/mthca_memfree.c       | 34 +++++++++++++++++++
 .../infiniband/hw/mthca/mthca_memfree.h       |  1 +
 3 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 1eb6127e7b0d..1419ef637612 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b8ca06f674ab5d7853d7de892c09bdc4c1bfb069
+refs/heads/master: 0fabd9fb7bdc935f121e6950a2c4eff971dd4c75
diff --git a/trunk/drivers/infiniband/hw/mthca/mthca_memfree.c b/trunk/drivers/infiniband/hw/mthca/mthca_memfree.c
index 46981d48c232..ea45de8c5b8e 100644
--- a/trunk/drivers/infiniband/hw/mthca/mthca_memfree.c
+++ b/trunk/drivers/infiniband/hw/mthca/mthca_memfree.c
@@ -192,6 +192,40 @@ void mthca_table_put(struct mthca_dev *dev, struct mthca_icm_table *table, int o
 	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)
 {
diff --git a/trunk/drivers/infiniband/hw/mthca/mthca_memfree.h b/trunk/drivers/infiniband/hw/mthca/mthca_memfree.h
index ef72e430250a..fe7be2a6bc4a 100644
--- a/trunk/drivers/infiniband/hw/mthca/mthca_memfree.h
+++ b/trunk/drivers/infiniband/hw/mthca/mthca_memfree.h
@@ -85,6 +85,7 @@ struct mthca_icm_table *mthca_alloc_icm_table(struct mthca_dev *dev,
 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,