diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-06-17 15:19:53 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-07-17 06:01:49 +0300 |
| commit | 7ad388d8e4c703980b7018b938cdeec58832d78d (patch) | |
| tree | 26c50ab746ca4a8139179ee043beaa413ffe0558 | |
| parent | f9b0530fa02e0c73f31a49ef743e8f44eb8e32cc (diff) | |
| download | linux-7ad388d8e4c703980b7018b938cdeec58832d78d.tar.xz | |
scsi: core: add a host / host template field for the virt boundary
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 <hch@lst.de>
Acked-by: Kashyap Desai < kashyap.desai@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/hosts.c | 3 | ||||
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 3 | ||||
| -rw-r--r-- | include/scsi/scsi_host.h | 3 |
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 96ed24841c33..f98509d717a0 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -462,6 +462,9 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) else shost->dma_boundary = 0xffffffff; + if (sht->virt_boundary_mask) + shost->virt_boundary_mask = sht->virt_boundary_mask; + device_initialize(&shost->shost_gendev); dev_set_name(&shost->shost_gendev, "host%d", shost->host_no); shost->shost_gendev.bus = &scsi_bus_type; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 420e2354b36b..404e5e28ef62 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1791,7 +1791,8 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q) dma_set_seg_boundary(dev, shost->dma_boundary); blk_queue_max_segment_size(q, shost->max_segment_size); - dma_set_max_seg_size(dev, shost->max_segment_size); + blk_queue_virt_boundary(q, shost->virt_boundary_mask); + dma_set_max_seg_size(dev, queue_max_segment_size(q)); /* * Set a reasonable default alignment: The larger of 32-byte (dword), diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index a5fcdad4a03e..cc139dbd71e5 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -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. * |