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1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2022 Intel Corporation4 */5 6#ifndef _XE_MAP_H_7#define _XE_MAP_H_8 9#include <linux/iosys-map.h>10 11#include <xe_device.h>12 13/**14 * DOC: Map layer15 *16 * All access to any memory shared with a device (both sysmem and vram) in the17 * XE driver should go through this layer (xe_map). This layer is built on top18 * of :ref:`driver-api/device-io:Generalizing Access to System and I/O Memory`19 * and with extra hooks into the XE driver that allows adding asserts to memory20 * accesses (e.g. for blocking runtime_pm D3Cold on Discrete Graphics).21 */22 23static inline void xe_map_memcpy_to(struct xe_device *xe, struct iosys_map *dst,24 size_t dst_offset, const void *src,25 size_t len)26{27 xe_device_assert_mem_access(xe);28 iosys_map_memcpy_to(dst, dst_offset, src, len);29}30 31static inline void xe_map_memcpy_from(struct xe_device *xe, void *dst,32 const struct iosys_map *src,33 size_t src_offset, size_t len)34{35 xe_device_assert_mem_access(xe);36 iosys_map_memcpy_from(dst, src, src_offset, len);37}38 39static inline void xe_map_memset(struct xe_device *xe,40 struct iosys_map *dst, size_t offset,41 int value, size_t len)42{43 xe_device_assert_mem_access(xe);44 iosys_map_memset(dst, offset, value, len);45}46 47/* FIXME: We likely should kill these two functions sooner or later */48static inline u32 xe_map_read32(struct xe_device *xe, struct iosys_map *map)49{50 xe_device_assert_mem_access(xe);51 52 if (map->is_iomem)53 return readl(map->vaddr_iomem);54 else55 return READ_ONCE(*(u32 *)map->vaddr);56}57 58static inline void xe_map_write32(struct xe_device *xe, struct iosys_map *map,59 u32 val)60{61 xe_device_assert_mem_access(xe);62 63 if (map->is_iomem)64 writel(val, map->vaddr_iomem);65 else66 *(u32 *)map->vaddr = val;67}68 69#define xe_map_rd(xe__, map__, offset__, type__) ({ \70 struct xe_device *__xe = xe__; \71 xe_device_assert_mem_access(__xe); \72 iosys_map_rd(map__, offset__, type__); \73})74 75#define xe_map_wr(xe__, map__, offset__, type__, val__) ({ \76 struct xe_device *__xe = xe__; \77 xe_device_assert_mem_access(__xe); \78 iosys_map_wr(map__, offset__, type__, val__); \79})80 81#define xe_map_rd_field(xe__, map__, struct_offset__, struct_type__, field__) ({ \82 struct xe_device *__xe = xe__; \83 xe_device_assert_mem_access(__xe); \84 iosys_map_rd_field(map__, struct_offset__, struct_type__, field__); \85})86 87#define xe_map_wr_field(xe__, map__, struct_offset__, struct_type__, field__, val__) ({ \88 struct xe_device *__xe = xe__; \89 xe_device_assert_mem_access(__xe); \90 iosys_map_wr_field(map__, struct_offset__, struct_type__, field__, val__); \91})92 93#endif94