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can: kvaser_pciefd: Enable 64-bit DMA addressing

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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: Martin Jocic <martin.jocic@kvaser.com>
Link: https://patch.msgid.link/d7340f78e3db305bfeeb8229d2dd1c9077e10b92.1725875278.git.martin.jocic@kvaser.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Martin Jocic 2024-09-09 13:35:12 +02:00 committed by Marc Kleine-Budde
parent 75b3189540
commit d0fa06408c
1 changed files with 3 additions and 0 deletions
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3
drivers/net/can/kvaser_pciefd.c
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@ -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,