[openib-general] [PATCH][19/27] IB/mthca: add mthca_write64_raw() for writing to MTT table directly

[Roland Dreier]

From: Michael S. Tsirkin <mst at mellanox.co.il>

Add mthca_write64_raw() function, which will be used to write FMR
entries that are in ioremapped PCI memory.

Signed-off-by: Michael S. Tsirkin <mst at mellanox.co.il>
Signed-off-by: Roland Dreier <roland at topspin.com>


--- linux-export.orig/drivers/infiniband/hw/mthca/mthca_doorbell.h	2005-03-31 19:06:52.000000000 -0800
+++ linux-export/drivers/infiniband/hw/mthca/mthca_doorbell.h	2005-04-01 12:38:27.898904595 -0800
@@ -51,6 +51,11 @@
 #define MTHCA_INIT_DOORBELL_LOCK(ptr)    do { } while (0)
 #define MTHCA_GET_DOORBELL_LOCK(ptr)      (NULL)
 
+static inline void mthca_write64_raw(__be64 val, void __iomem *dest)
+{
+	__raw_writeq((__force u64) val, dest);
+}
+
 static inline void mthca_write64(u32 val[2], void __iomem *dest,
 				 spinlock_t *doorbell_lock)
 {
@@ -74,6 +79,12 @@
 #define MTHCA_INIT_DOORBELL_LOCK(ptr)     spin_lock_init(ptr)
 #define MTHCA_GET_DOORBELL_LOCK(ptr)      (ptr)
 
+static inline void mthca_write64_raw(__be64 val, void __iomem *dest)
+{
+	__raw_writel(((__force u32 *) &val)[0], dest);
+	__raw_writel(((__force u32 *) &val)[1], dest + 4);
+}
+
 static inline void mthca_write64(u32 val[2], void __iomem *dest,
 				 spinlock_t *doorbell_lock)
 {