Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
34 lines
782 B
C
34 lines
782 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2004 - 2007 Paul Mundt
|
|
*/
|
|
#include <linux/mm.h>
|
|
#include <linux/dma-map-ops.h>
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/addrspace.h>
|
|
|
|
void arch_dma_prep_coherent(struct page *page, size_t size)
|
|
{
|
|
__flush_purge_region(page_address(page), size);
|
|
}
|
|
|
|
void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
void *addr = sh_cacheop_vaddr(phys_to_virt(paddr));
|
|
|
|
switch (dir) {
|
|
case DMA_FROM_DEVICE: /* invalidate only */
|
|
__flush_invalidate_region(addr, size);
|
|
break;
|
|
case DMA_TO_DEVICE: /* writeback only */
|
|
__flush_wback_region(addr, size);
|
|
break;
|
|
case DMA_BIDIRECTIONAL: /* writeback and invalidate */
|
|
__flush_purge_region(addr, size);
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|