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1// SPDX-License-Identifier: MIT2/*3 * Copyright 2023, Intel Corporation.4 */5 6#include "i915_vma.h"7#include "intel_display_types.h"8#include "intel_dsb_buffer.h"9#include "xe_bo.h"10#include "xe_device.h"11#include "xe_device_types.h"12 13u32 intel_dsb_buffer_ggtt_offset(struct intel_dsb_buffer *dsb_buf)14{15 return xe_bo_ggtt_addr(dsb_buf->vma->bo);16}17 18void intel_dsb_buffer_write(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val)19{20 struct xe_device *xe = dsb_buf->vma->bo->tile->xe;21 22 iosys_map_wr(&dsb_buf->vma->bo->vmap, idx * 4, u32, val);23 xe_device_l2_flush(xe);24}25 26u32 intel_dsb_buffer_read(struct intel_dsb_buffer *dsb_buf, u32 idx)27{28 return iosys_map_rd(&dsb_buf->vma->bo->vmap, idx * 4, u32);29}30 31void intel_dsb_buffer_memset(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val, size_t size)32{33 struct xe_device *xe = dsb_buf->vma->bo->tile->xe;34 35 WARN_ON(idx > (dsb_buf->buf_size - size) / sizeof(*dsb_buf->cmd_buf));36 37 iosys_map_memset(&dsb_buf->vma->bo->vmap, idx * 4, val, size);38 xe_device_l2_flush(xe);39}40 41bool intel_dsb_buffer_create(struct intel_crtc *crtc, struct intel_dsb_buffer *dsb_buf, size_t size)42{43 struct xe_device *xe = to_xe_device(crtc->base.dev);44 struct xe_bo *obj;45 struct i915_vma *vma;46 47 vma = kzalloc(sizeof(*vma), GFP_KERNEL);48 if (!vma)49 return false;50 51 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe),52 NULL, PAGE_ALIGN(size),53 ttm_bo_type_kernel,54 XE_BO_FLAG_VRAM_IF_DGFX(xe_device_get_root_tile(xe)) |55 XE_BO_FLAG_GGTT);56 if (IS_ERR(obj)) {57 kfree(vma);58 return false;59 }60 61 vma->bo = obj;62 dsb_buf->vma = vma;63 dsb_buf->buf_size = size;64 65 return true;66}67 68void intel_dsb_buffer_cleanup(struct intel_dsb_buffer *dsb_buf)69{70 xe_bo_unpin_map_no_vm(dsb_buf->vma->bo);71 kfree(dsb_buf->vma);72}73 74void intel_dsb_buffer_flush_map(struct intel_dsb_buffer *dsb_buf)75{76 /* TODO: add xe specific flush_map() for dsb buffer object. */77}78