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- /*
- * xrp_address_map: CPU->DSP physical address translator
- *
- * Copyright (c) 2017 Cadence Design Systems, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- * Alternatively you can use and distribute this file under the terms of
- * the GNU General Public License version 2 or later.
- */
- #ifndef XRP_ADDRESS_MAP_H
- #define XRP_ADDRESS_MAP_H
- #include <linux/types.h>
- #define XRP_NO_TRANSLATION ((u32)~0ul)
- struct xrp_address_map_entry {
- phys_addr_t src_addr;
- u32 dst_addr;
- u32 size;
- };
- struct xrp_address_map {
- unsigned n;
- struct xrp_address_map_entry *entry;
- };
- int xrp_init_address_map(struct device *dev,
- struct xrp_address_map *map);
- void xrp_free_address_map(struct xrp_address_map *map);
- struct xrp_address_map_entry *
- xrp_get_address_mapping(const struct xrp_address_map *map, phys_addr_t addr);
- u32 xrp_translate_to_dsp(const struct xrp_address_map *map, phys_addr_t addr);
- phys_addr_t xrp_translate_dsp_to_host(const struct xrp_address_map *map,u32 addr);
- static inline int xrp_compare_address(phys_addr_t addr,
- const struct xrp_address_map_entry *entry)
- {
- if (addr < entry->src_addr)
- return -1;
- if (addr - entry->src_addr < entry->size)
- return 0;
- return 1;
- }
- static inline int xrp_compare_dev_address(phys_addr_t addr,
- const struct xrp_address_map_entry *entry)
- {
- if (addr < entry->dst_addr)
- return -1;
- if (addr - entry->dst_addr < entry->size)
- return 0;
- return 1;
- }
- #endif
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