bt/ipmi: Fixup allocation of bt/ipmi messages

The original implementation of the bt and ipmi layers required the bt,
ipmi and message data to be allocated separately. This is sub-optimal
as it could cause excessive memory fragmentation. This patch fixes the
problem by adding a function to the bt layer to allocate space for
both the required data and bt/ipmi message.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/bt.h b/include/bt.h
index 4eac355..5f8a91e 100644
--- a/include/bt.h
+++ b/include/bt.h
@@ -22,6 +22,12 @@
 /* Initialise the BT interface */
 void bt_init(void (*ipmi_cmd_done)(struct ipmi_msg *));
 
+/* Allocate an BT-IPMI message */
+struct ipmi_msg *bt_alloc_ipmi_msg(size_t request_size, size_t response_size);
+
+/* Free a BT-IPMI message */
+void bt_free_ipmi_msg(struct ipmi_msg *ipmi_msg);
+
 /* Add an IPMI message to the BT queue and wait for a resposne */
 int bt_add_ipmi_msg_wait(struct ipmi_msg *msg);