[PATCH 01/13] i3c: mipi-i3c-hci-pci: Set 64-bit DMA mask for Intel controllers

[Adrian Hunter]

All Intel controllers support 64-bit DMA.  Set the DMA mask accordingly.

This is needed only if there is no IOMMU configured, which is not
recommended, but possible.

Signed-off-by: Adrian Hunter <adrian.hunter at intel.com>
---
 drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
index dd4484eff2f0..850fcec4cacf 100644
--- a/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
+++ b/drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
@@ -29,6 +29,7 @@ static int mipi_i3c_hci_pci_intel_init(struct pci_dev *pci)
 {
 	unsigned long timeout;
 	void __iomem *priv;
+	int ret;
 
 	priv = devm_ioremap(&pci->dev,
 			    pci_resource_start(pci, 0) + INTEL_PRIV_OFFSET,
@@ -36,6 +37,10 @@ static int mipi_i3c_hci_pci_intel_init(struct pci_dev *pci)
 	if (!priv)
 		return -ENOMEM;
 
+	ret = dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(64));
+	if (ret)
+		return ret;
+
 	/* Assert reset, wait for completion and release reset */
 	writel(0, priv + INTEL_PRIV_RESETS);
 	timeout = jiffies + msecs_to_jiffies(10);
-- 
2.51.0