Commit 8552b5b4 authored Jul 26, 2016 by Steven J. Hill Committed by Ralf Baechle Jul 28, 2016

MIPS: Octeon: Put restrictions on DMA descriptors.



Set the DMA mask such that all descriptors stay in the
lower 4GB of memory.

Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13830/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 71471e28

arch/mips/cavium-octeon/octeon-platform.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -311,7 +311,11 @@ static struct usb_ehci_pdata octeon_ehci_pdata = {
		#ifdef __BIG_ENDIAN
		.big_endian_mmio = 1,
		#endif
		.dma_mask_64 = 1,
		/*
		* We can DMA from anywhere. But the descriptors must be in
		* the lower 4GB.
		*/
		.dma_mask_64 = 0,
		.power_on = octeon_ehci_power_on,
		.power_off = octeon_ehci_power_off,
		};