Commit d0fa0640 authored by Martin Jocic's avatar Martin Jocic Committed by Marc Kleine-Budde
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can: kvaser_pciefd: Enable 64-bit DMA addressing 



Enabling 64-bit addressing for DMA buffers will prevent issues
on some memory constrained platforms like e.g. Raspberry Pi 5,
where the driver won't load because it cannot allocate enough
continuous memory in the default 32-bit memory address range.

Signed-off-by: default avatarMartin Jocic <martin.jocic@kvaser.com>
Link: https://patch.msgid.link/d7340f78e3db305bfeeb8229d2dd1c9077e10b92.1725875278.git.martin.jocic@kvaser.com


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 75b31895

drivers/net/can/kvaser_pciefd.c

+3 −0
Original line number Diff line number Diff line
@@ -1104,6 +1104,9 @@ static int kvaser_pciefd_setup_dma(struct kvaser_pciefd *pcie) 


	/* Disable the DMA */

	iowrite32(0, KVASER_PCIEFD_SRB_ADDR(pcie) + KVASER_PCIEFD_SRB_CTRL_REG);



	dma_set_mask_and_coherent(&pcie->pci->dev, DMA_BIT_MASK(64));



	for (i = 0; i < KVASER_PCIEFD_DMA_COUNT; i++) {

		pcie->dma_data[i] = dmam_alloc_coherent(&pcie->pci->dev,

							KVASER_PCIEFD_DMA_SIZE,