1 // SPDX-License-Identifier: MIT 2 /* 3 * Copyright 2023, Intel Corporation. 4 */ 5 6 #include "i915_drv.h" 7 #include "i915_vma.h" 8 #include "intel_display_types.h" 9 #include "intel_dsb_buffer.h" 10 #include "xe_bo.h" 11 #include "xe_gt.h" 12 13 u32 intel_dsb_buffer_ggtt_offset(struct intel_dsb_buffer *dsb_buf) 14 { 15 return xe_bo_ggtt_addr(dsb_buf->vma->bo); 16 } 17 18 void intel_dsb_buffer_write(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val) 19 { 20 iosys_map_wr(&dsb_buf->vma->bo->vmap, idx * 4, u32, val); 21 } 22 23 u32 intel_dsb_buffer_read(struct intel_dsb_buffer *dsb_buf, u32 idx) 24 { 25 return iosys_map_rd(&dsb_buf->vma->bo->vmap, idx * 4, u32); 26 } 27 28 void intel_dsb_buffer_memset(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val, size_t size) 29 { 30 WARN_ON(idx > (dsb_buf->buf_size - size) / sizeof(*dsb_buf->cmd_buf)); 31 32 iosys_map_memset(&dsb_buf->vma->bo->vmap, idx * 4, val, size); 33 } 34 35 bool intel_dsb_buffer_create(struct intel_crtc *crtc, struct intel_dsb_buffer *dsb_buf, size_t size) 36 { 37 struct drm_i915_private *i915 = to_i915(crtc->base.dev); 38 struct drm_i915_gem_object *obj; 39 struct i915_vma *vma; 40 41 vma = kzalloc(sizeof(*vma), GFP_KERNEL); 42 if (!vma) 43 return false; 44 45 obj = xe_bo_create_pin_map(i915, xe_device_get_root_tile(i915), 46 NULL, PAGE_ALIGN(size), 47 ttm_bo_type_kernel, 48 XE_BO_CREATE_VRAM_IF_DGFX(xe_device_get_root_tile(i915)) | 49 XE_BO_CREATE_GGTT_BIT); 50 if (IS_ERR(obj)) { 51 kfree(vma); 52 return false; 53 } 54 55 vma->bo = obj; 56 dsb_buf->vma = vma; 57 dsb_buf->buf_size = size; 58 59 return true; 60 } 61 62 void intel_dsb_buffer_cleanup(struct intel_dsb_buffer *dsb_buf) 63 { 64 xe_bo_unpin_map_no_vm(dsb_buf->vma->bo); 65 kfree(dsb_buf->vma); 66 } 67 68 void intel_dsb_buffer_flush_map(struct intel_dsb_buffer *dsb_buf) 69 { 70 /* TODO: add xe specific flush_map() for dsb buffer object. */ 71 } 72