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>
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/dma-map-ops.h>
|
|
#include <linux/kernel.h>
|
|
#include <asm/cacheflush.h>
|
|
|
|
#ifndef CONFIG_COLDFIRE
|
|
void arch_dma_prep_coherent(struct page *page, size_t size)
|
|
{
|
|
cache_push(page_to_phys(page), size);
|
|
}
|
|
|
|
pgprot_t pgprot_dmacoherent(pgprot_t prot)
|
|
{
|
|
if (CPU_IS_040_OR_060) {
|
|
pgprot_val(prot) &= ~_PAGE_CACHE040;
|
|
pgprot_val(prot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S;
|
|
} else {
|
|
pgprot_val(prot) |= _PAGE_NOCACHE030;
|
|
}
|
|
return prot;
|
|
}
|
|
#endif /* CONFIG_MMU && !CONFIG_COLDFIRE */
|
|
|
|
void arch_sync_dma_for_device(phys_addr_t handle, size_t size,
|
|
enum dma_data_direction dir)
|
|
{
|
|
switch (dir) {
|
|
case DMA_BIDIRECTIONAL:
|
|
case DMA_TO_DEVICE:
|
|
cache_push(handle, size);
|
|
break;
|
|
case DMA_FROM_DEVICE:
|
|
cache_clear(handle, size);
|
|
break;
|
|
default:
|
|
pr_err_ratelimited("dma_sync_single_for_device: unsupported dir %u\n",
|
|
dir);
|
|
break;
|
|
}
|
|
}
|