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qed: Introduce DMA_REGPAIR_LE

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FW hsi contains regpairs, mostly for 64-bit address representations.
Since same paradigm is applied each time a regpair is filled, this
introduces a new utility macro for setting such regpairs.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuval Mintz
2016-02-21 11:40:10 +02:00
committed by David S. Miller
parent 06f56b8136
commit 944945986f
4 changed files with 14 additions and 20 deletions
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4
include/linux/qed/qed_chain.h
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@@ -19,6 +19,10 @@
/* dma_addr_t manip */
#define DMA_LO_LE(x) cpu_to_le32(lower_32_bits(x))
#define DMA_HI_LE(x) cpu_to_le32(upper_32_bits(x))
#define DMA_REGPAIR_LE(x, val) do { \
(x).hi = DMA_HI_LE((val)); \
(x).lo = DMA_LO_LE((val)); \
} while (0)
#define HILO_GEN(hi, lo, type) ((((type)(hi)) << 32) + (lo))
#define HILO_DMA(hi, lo) HILO_GEN(hi, lo, dma_addr_t)