Commit e3fdb189 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Vinod Koul
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dmaengine: idma64: set maximum allowed segment size for DMA 



This tells, for example, IOMMU what the maximum size of a segment
the DMA controller can send.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 37580559

drivers/dma/idma64.c

+2 −0
Original line number Diff line number Diff line
@@ -588,6 +588,8 @@ static int idma64_probe(struct idma64_chip *chip) 


	idma64->dma.dev = chip->dev;



	dma_set_max_seg_size(idma64->dma.dev, IDMA64C_CTLH_BLOCK_TS_MASK);



	ret = dma_async_device_register(&idma64->dma);

	if (ret)

		return ret;

drivers/dma/idma64.h

+2 −1
Original line number Diff line number Diff line
@@ -54,7 +54,8 @@ 
#define IDMA64C_CTLL_LLP_S_EN		(1 << 28)	/* src block chain */



/* Bitfields in CTL_HI */

#define IDMA64C_CTLH_BLOCK_TS(x)	((x) & ((1 << 17) - 1))

#define IDMA64C_CTLH_BLOCK_TS_MASK	((1 << 17) - 1)

#define IDMA64C_CTLH_BLOCK_TS(x)	((x) & IDMA64C_CTLH_BLOCK_TS_MASK)

#define IDMA64C_CTLH_DONE		(1 << 17)



/* Bitfields in CFG_LO */