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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _PARISC_DMA_MAPPING_H
#define _PARISC_DMA_MAPPING_H
/*
** We need to support 4 different coherent dma models with one binary:
**
** I/O MMU consistent method dma_sync behavior
** ============= ====================== =======================
** a) PA-7x00LC uncachable host memory flush/purge
** b) U2/Uturn cachable host memory NOP
** c) Ike/Astro cachable host memory NOP
** d) EPIC/SAGA memory on EPIC/SAGA flush/reset DMA channel
**
** PA-7[13]00LC processors have a GSC bus interface and no I/O MMU.
**
** Systems (eg PCX-T workstations) that don't fall into the above
** categories will need to modify the needed drivers to perform
** flush/purge and allocate "regular" cacheable pages for everything.
*/
extern const struct dma_map_ops *hppa_dma_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(void)
{
return hppa_dma_ops;
}
#endif