When a pool crosses the 4gb boundary region then
before reallocation pools just change the coherent
dma mask to 32bit and keep the normal dma mask to 63/64 bit.
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
---
drivers/scsi/mpt3sas/mpt3sas_base.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index eeebe80..f8a3b0d 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -2990,19 +2990,26 @@ static int
_base_config_dma_addressing(struct MPT3SAS_ADAPTER *ioc, struct pci_dev *pdev)
{
struct sysinfo s;
+ u64 coherent_dma_mask, dma_mask;
- if (ioc->is_mcpu_endpoint ||
- sizeof(dma_addr_t) == 4 || ioc->use_32bit_dma ||
- dma_get_required_mask(&pdev->dev) <= 32)
+ if (ioc->is_mcpu_endpoint || sizeof(dma_addr_t) == 4 ||
+ dma_get_required_mask(&pdev->dev) <= 32) {
ioc->dma_mask = 32;
+ coherent_dma_mask = dma_mask = DMA_BIT_MASK(32);
/* Set 63 bit DMA mask for all SAS3 and SAS35 controllers */
- else if (ioc->hba_mpi_version_belonged > MPI2_VERSION)
+ } else if (ioc->hba_mpi_version_belonged > MPI2_VERSION) {
ioc->dma_mask = 63;
- else
+ coherent_dma_mask = dma_mask = DMA_BIT_MASK(63);
+ } else {
ioc->dma_mask = 64;
+ coherent_dma_mask = dma_mask = DMA_BIT_MASK(64);
+ }
+
+ if (ioc->use_32bit_dma)
+ coherent_dma_mask = DMA_BIT_MASK(32);
- if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(ioc->dma_mask)) ||
- dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(ioc->dma_mask)))
+ if (dma_set_mask(&pdev->dev, dma_mask) ||
+ dma_set_coherent_mask(&pdev->dev, coherent_dma_mask))
return -ENODEV;
if (ioc->dma_mask > 32) {
--
2.27.0
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