openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

switchtec: Set DMA coherent mask 

Switchtec hardware supports 64-bit DMA, so set the correct DMA mask.  This
allows the CMA to allocate larger buffers for memory windows.

Signed-off-by: Boris Glimcher <Boris.Glimcher@emc.com>
Signed-off-by: Wesley Sheng <wesley.sheng@microchip.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
This commit is contained in:
Boris Glimcher 2018-12-10 17:12:21 +08:00 committed by Bjorn Helgaas
parent 526180408b
commit aff614c633
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/pci/switch/switchtec.c
View File

@ -1237,6 +1237,10 @@ static int switchtec_init_pci(struct switchtec_dev *stdev,
if (rc)
return rc;
rc = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
if (rc)
return rc;
pci_set_master(pdev);
stdev->mmio = pcim_iomap_table(pdev)[0];