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scsi: core: add a host / host template field for the virt boundary

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This allows drivers setting it up easily instead of branching out to block
layer calls in slave_alloc, and ensures the upgraded max_segment_size
setting gets picked up by the DMA layer.

Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Kashyap Desai < [email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Christoph Hellwig 2019-06-17 14:19:53 +02:00 • committed by Martin K. Petersen
commit 7ad388d8e4
3 changed files with 8 additions and 1 deletions
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3
include/scsi/scsi_host.h
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@ -369,6 +369,8 @@ struct scsi_host_template {
*/
unsigned long dma_boundary;
unsigned long virt_boundary_mask;
/*
* This specifies "machine infinity" for host templates which don't
* limit the transfer size. Note this limit represents an absolute
@ -587,6 +589,7 @@ struct Scsi_Host {
unsigned int max_sectors;
unsigned int max_segment_size;
unsigned long dma_boundary;
unsigned long virt_boundary_mask;
/*
* In scsi-mq mode, the number of hardware queues supported by the LLD.
*