From: Roland Dreier <roland@topspin.com>
To: akpm@osdl.org
Cc: linux-kernel@vger.kernel.org, openib-general@openib.org
Subject: [PATCH][20/27] IB/mthca: add mthca_table_find() function
Date: Fri, 1 Apr 2005 12:49:53 -0800 [thread overview]
Message-ID: <2005411249.Tkvt1lzz8zEHUMmz@topspin.com> (raw)
In-Reply-To: <2005411249.t0DdCtarOabubO3D@topspin.com>
From: Michael S. Tsirkin <mst@mellanox.co.il>
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 <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
--- linux-export.orig/drivers/infiniband/hw/mthca/mthca_memfree.c 2005-04-01 12:38:23.500859288 -0800
+++ linux-export/drivers/infiniband/hw/mthca/mthca_memfree.c 2005-04-01 12:38:28.285820606 -0800
@@ -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)
{
--- linux-export.orig/drivers/infiniband/hw/mthca/mthca_memfree.h 2005-04-01 12:38:19.895641881 -0800
+++ linux-export/drivers/infiniband/hw/mthca/mthca_memfree.h 2005-04-01 12:38:28.280821691 -0800
@@ -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,
next prev parent reply other threads:[~2005-04-01 21:01 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-01 20:49 [PATCH][1/27] IB/mthca: map MPT/MTT context in mem-free mode Roland Dreier
2005-04-01 20:49 ` [PATCH][2/27] IB/mthca: fill in more device query fields Roland Dreier
2005-04-01 20:49 ` [PATCH][3/27] IB/mthca: fix calculation of RDB shift Roland Dreier
2005-04-01 20:49 ` [PATCH][4/27] IB/mthca: fix posting sends with immediate data Roland Dreier
2005-04-01 20:49 ` [PATCH][5/27] IB/mthca: allow unaligned memory regions Roland Dreier
2005-04-01 20:49 ` [PATCH][6/27] IB/mthca: allocate correct number of doorbell pages Roland Dreier
2005-04-01 20:49 ` [PATCH][7/27] IB/mthca: clean up mthca_dereg_mr() Roland Dreier
2005-04-01 20:49 ` [PATCH][8/27] IB/mthca: fix MR allocation error path Roland Dreier
2005-04-01 20:49 ` [PATCH][9/27] IB/mthca: release mutex on doorbell alloc " Roland Dreier
2005-04-01 20:49 ` [PATCH][10/27] IB/mthca: print assigned IRQ when interrupt test fails Roland Dreier
2005-04-01 20:49 ` [PATCH][11/27] IB/mthca: only free doorbell records in mem-free mode Roland Dreier
2005-04-01 20:49 ` [PATCH][12/27] IB/mthca: fix format of CQ number for CQ events Roland Dreier
2005-04-01 20:49 ` [PATCH][13/27] IB/mthca: implement RDMA/atomic operations for mem-free mode Roland Dreier
2005-04-01 20:49 ` [PATCH][14/27] IB/mthca: fix MTT allocation in " Roland Dreier
2005-04-01 20:49 ` [PATCH][15/27] IB/mthca: fill in opcode field for send completions Roland Dreier
2005-04-01 20:49 ` [PATCH][16/27] IB/mthca: allow address handle creation in interrupt context Roland Dreier
2005-04-01 20:49 ` [PATCH][17/27] IB/mthca: encapsulate MTT buddy allocator Roland Dreier
2005-04-01 20:49 ` [PATCH][18/27] IB/mthca: add SYNC_TPT firmware command Roland Dreier
2005-04-01 20:49 ` [PATCH][19/27] IB/mthca: add mthca_write64_raw() for writing to MTT table directly Roland Dreier
2005-04-01 20:49 ` Roland Dreier [this message]
2005-04-01 20:49 ` [PATCH][21/27] IB/mthca: split MR key munging routines Roland Dreier
2005-04-01 20:49 ` [PATCH][22/27] IB/mthca: add fast memory region implementation Roland Dreier
2005-04-01 20:49 ` [PATCH][23/27] IB/mthca: tweaks to mthca_cmd.c Roland Dreier
2005-04-01 20:49 ` [PATCH][24/27] IB/mthca: encapsulate mem-free check into mthca_is_memfree() Roland Dreier
2005-04-01 20:49 ` [PATCH][25/27] IB/mthca: map context for RDMA responder in mem-free mode Roland Dreier
2005-04-01 20:49 ` [PATCH][26/27] IB/mthca: update receive queue initialization for new HCAs Roland Dreier
2005-04-01 20:49 ` [PATCH][27/27] IB/mthca: add support for new MT25204 HCA Roland Dreier
2005-04-01 22:06 ` [PATCH][26.5/27] Add MT25204 PCI IDs Roland Dreier
2005-04-08 0:10 ` Greg KH
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