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_device.h" 11 #include "xe_device_types.h" 12 #include "xe_gt.h" 13 14 u32 intel_dsb_buffer_ggtt_offset(struct intel_dsb_buffer *dsb_buf) 15 { 16 return xe_bo_ggtt_addr(dsb_buf->vma->bo); 17 } 18 19 void intel_dsb_buffer_write(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val) 20 { 21 struct xe_device *xe = dsb_buf->vma->bo->tile->xe; 22 23 iosys_map_wr(&dsb_buf->vma->bo->vmap, idx * 4, u32, val); 24 xe_device_l2_flush(xe); 25 } 26 27 u32 intel_dsb_buffer_read(struct intel_dsb_buffer *dsb_buf, u32 idx) 28 { 29 return iosys_map_rd(&dsb_buf->vma->bo->vmap, idx * 4, u32); 30 } 31 32 void intel_dsb_buffer_memset(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val, size_t size) 33 { 34 struct xe_device *xe = dsb_buf->vma->bo->tile->xe; 35 36 WARN_ON(idx > (dsb_buf->buf_size - size) / sizeof(*dsb_buf->cmd_buf)); 37 38 iosys_map_memset(&dsb_buf->vma->bo->vmap, idx * 4, val, size); 39 xe_device_l2_flush(xe); 40 } 41 42 bool intel_dsb_buffer_create(struct intel_crtc *crtc, struct intel_dsb_buffer *dsb_buf, size_t size) 43 { 44 struct xe_device *xe = to_xe_device(crtc->base.dev); 45 struct xe_bo *obj; 46 struct i915_vma *vma; 47 48 vma = kzalloc(sizeof(*vma), GFP_KERNEL); 49 if (!vma) 50 return false; 51 52 obj = xe_bo_create_pin_map(xe, xe_device_get_root_tile(xe), 53 NULL, PAGE_ALIGN(size), 54 ttm_bo_type_kernel, 55 XE_BO_FLAG_VRAM_IF_DGFX(xe_device_get_root_tile(xe)) | 56 XE_BO_FLAG_GGTT); 57 if (IS_ERR(obj)) { 58 kfree(vma); 59 return false; 60 } 61 62 vma->bo = obj; 63 dsb_buf->vma = vma; 64 dsb_buf->buf_size = size; 65 66 return true; 67 } 68 69 void intel_dsb_buffer_cleanup(struct intel_dsb_buffer *dsb_buf) 70 { 71 xe_bo_unpin_map_no_vm(dsb_buf->vma->bo); 72 kfree(dsb_buf->vma); 73 } 74 75 void intel_dsb_buffer_flush_map(struct intel_dsb_buffer *dsb_buf) 76 { 77 /* TODO: add xe specific flush_map() for dsb buffer object. */ 78 } 79