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ioatdma: Add 64bit chansts register read for ioat v3.3.
The channel status register for v3.3 is now 64bit. Use readq if available on v3.3 platforms. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Dan Williams <djbw@fb.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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@ -201,7 +201,7 @@ ioat_chan_by_index(struct ioatdma_device *device, int index)
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return device->idx[index];
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return device->idx[index];
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}
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}
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static inline u64 ioat_chansts(struct ioat_chan_common *chan)
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static inline u64 ioat_chansts_32(struct ioat_chan_common *chan)
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{
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{
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u8 ver = chan->device->version;
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u8 ver = chan->device->version;
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u64 status;
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u64 status;
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@ -218,6 +218,26 @@ static inline u64 ioat_chansts(struct ioat_chan_common *chan)
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return status;
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return status;
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}
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}
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#if BITS_PER_LONG == 64
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static inline u64 ioat_chansts(struct ioat_chan_common *chan)
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{
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u8 ver = chan->device->version;
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u64 status;
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/* With IOAT v3.3 the status register is 64bit. */
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if (ver >= IOAT_VER_3_3)
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status = readq(chan->reg_base + IOAT_CHANSTS_OFFSET(ver));
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else
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status = ioat_chansts_32(chan);
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return status;
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}
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#else
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#define ioat_chansts ioat_chansts_32
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#endif
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static inline void ioat_start(struct ioat_chan_common *chan)
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static inline void ioat_start(struct ioat_chan_common *chan)
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{
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{
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u8 ver = chan->device->version;
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u8 ver = chan->device->version;
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