summaryrefslogtreecommitdiffstats
path: root/drivers/ntb/ntb_hw.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ntb/ntb_hw.c')
-rw-r--r--drivers/ntb/ntb_hw.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/ntb/ntb_hw.c b/drivers/ntb/ntb_hw.c
index ab34795..0345817 100644
--- a/drivers/ntb/ntb_hw.c
+++ b/drivers/ntb/ntb_hw.c
@@ -350,6 +350,23 @@ int ntb_read_remote_spad(struct ntb_device *ndev, unsigned int idx, u32 *val)
}
/**
+ * ntb_get_mw_base() - get addr for the NTB memory window
+ * @ndev: pointer to ntb_device instance
+ * @mw: memory window number
+ *
+ * This function provides the base address of the memory window specified.
+ *
+ * RETURNS: address, or NULL on error.
+ */
+resource_size_t ntb_get_mw_base(struct ntb_device *ndev, unsigned int mw)
+{
+ if (mw >= ntb_max_mw(ndev))
+ return 0;
+
+ return pci_resource_start(ndev->pdev, MW_TO_BAR(mw));
+}
+
+/**
* ntb_get_mw_vbase() - get virtual addr for the NTB memory window
* @ndev: pointer to ntb_device instance
* @mw: memory window number
OpenPOWER on IntegriCloud