[PATCH] IB/mthca: Encapsulate command interface init

Encapsulate mthca command interface initialization/cleanup.

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index cd9ed958d92f..78d4891720e9 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -431,6 +431,27 @@ static int mthca_cmd_imm(struct mthca_dev *dev,
                                       timeout, status);
 }
 
+int mthca_cmd_init(struct mthca_dev *dev)
+{
+        sema_init(&dev->cmd.hcr_sem, 1);
+        sema_init(&dev->cmd.poll_sem, 1);
+        dev->cmd.use_events = 0;
+
+        dev->hcr = ioremap(pci_resource_start(dev->pdev, 0) + MTHCA_HCR_BASE,
+                           MTHCA_HCR_SIZE);
+        if (!dev->hcr) {
+                mthca_err(dev, "Couldn't map command register.");
+                return -ENOMEM;
+        }
+
+        return 0;
+}
+
+void mthca_cmd_cleanup(struct mthca_dev *dev)
+{
+        iounmap(dev->hcr);
+}
+
 /*
  * Switch to using events to issue FW commands (should be called after
  * event queue to command events has been initialized).