94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
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/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2022 Intel Corporation
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*/
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#ifndef _XE_MAP_H_
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#define _XE_MAP_H_
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#include <linux/iosys-map.h>
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#include <xe_device.h>
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/**
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* DOC: Map layer
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*
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* All access to any memory shared with a device (both sysmem and vram) in the
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* XE driver should go through this layer (xe_map). This layer is built on top
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* of :ref:`driver-api/device-io:Generalizing Access to System and I/O Memory`
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* and with extra hooks into the XE driver that allows adding asserts to memory
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* accesses (e.g. for blocking runtime_pm D3Cold on Discrete Graphics).
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*/
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static inline void xe_map_memcpy_to(struct xe_device *xe, struct iosys_map *dst,
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size_t dst_offset, const void *src,
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size_t len)
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{
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xe_device_assert_mem_access(xe);
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iosys_map_memcpy_to(dst, dst_offset, src, len);
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}
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static inline void xe_map_memcpy_from(struct xe_device *xe, void *dst,
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const struct iosys_map *src,
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size_t src_offset, size_t len)
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{
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xe_device_assert_mem_access(xe);
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iosys_map_memcpy_from(dst, src, src_offset, len);
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}
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static inline void xe_map_memset(struct xe_device *xe,
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struct iosys_map *dst, size_t offset,
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int value, size_t len)
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{
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xe_device_assert_mem_access(xe);
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iosys_map_memset(dst, offset, value, len);
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}
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/* FIXME: We likely should kill these two functions sooner or later */
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static inline u32 xe_map_read32(struct xe_device *xe, struct iosys_map *map)
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{
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xe_device_assert_mem_access(xe);
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if (map->is_iomem)
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return readl(map->vaddr_iomem);
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else
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return READ_ONCE(*(u32 *)map->vaddr);
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}
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static inline void xe_map_write32(struct xe_device *xe, struct iosys_map *map,
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u32 val)
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{
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xe_device_assert_mem_access(xe);
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if (map->is_iomem)
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writel(val, map->vaddr_iomem);
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else
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*(u32 *)map->vaddr = val;
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}
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#define xe_map_rd(xe__, map__, offset__, type__) ({ \
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struct xe_device *__xe = xe__; \
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xe_device_assert_mem_access(__xe); \
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iosys_map_rd(map__, offset__, type__); \
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})
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#define xe_map_wr(xe__, map__, offset__, type__, val__) ({ \
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struct xe_device *__xe = xe__; \
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xe_device_assert_mem_access(__xe); \
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iosys_map_wr(map__, offset__, type__, val__); \
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})
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#define xe_map_rd_field(xe__, map__, struct_offset__, struct_type__, field__) ({ \
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struct xe_device *__xe = xe__; \
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xe_device_assert_mem_access(__xe); \
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iosys_map_rd_field(map__, struct_offset__, struct_type__, field__); \
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})
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#define xe_map_wr_field(xe__, map__, struct_offset__, struct_type__, field__, val__) ({ \
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struct xe_device *__xe = xe__; \
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xe_device_assert_mem_access(__xe); \
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iosys_map_wr_field(map__, struct_offset__, struct_type__, field__, val__); \
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})
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#endif
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