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