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

Roland Dreier
2005-04-01T21:41:08Z

From: Michael S. Tsirkin <mst@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@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@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)
{