diff options
Diffstat (limited to 'drivers/gpu/drm/xe/display/xe_dsb_buffer.c')
-rw-r--r-- | drivers/gpu/drm/xe/display/xe_dsb_buffer.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/display/xe_dsb_buffer.c b/drivers/gpu/drm/xe/display/xe_dsb_buffer.c new file mode 100644 index 0000000000..27c2fb1c00 --- /dev/null +++ b/drivers/gpu/drm/xe/display/xe_dsb_buffer.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright 2023, Intel Corporation. + */ + +#include "i915_drv.h" +#include "i915_vma.h" +#include "intel_display_types.h" +#include "intel_dsb_buffer.h" +#include "xe_bo.h" +#include "xe_gt.h" + +u32 intel_dsb_buffer_ggtt_offset(struct intel_dsb_buffer *dsb_buf) +{ + return xe_bo_ggtt_addr(dsb_buf->vma->bo); +} + +void intel_dsb_buffer_write(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val) +{ + iosys_map_wr(&dsb_buf->vma->bo->vmap, idx * 4, u32, val); +} + +u32 intel_dsb_buffer_read(struct intel_dsb_buffer *dsb_buf, u32 idx) +{ + return iosys_map_rd(&dsb_buf->vma->bo->vmap, idx * 4, u32); +} + +void intel_dsb_buffer_memset(struct intel_dsb_buffer *dsb_buf, u32 idx, u32 val, size_t size) +{ + WARN_ON(idx > (dsb_buf->buf_size - size) / sizeof(*dsb_buf->cmd_buf)); + + iosys_map_memset(&dsb_buf->vma->bo->vmap, idx * 4, val, size); +} + +bool intel_dsb_buffer_create(struct intel_crtc *crtc, struct intel_dsb_buffer *dsb_buf, size_t size) +{ + struct drm_i915_private *i915 = to_i915(crtc->base.dev); + struct drm_i915_gem_object *obj; + struct i915_vma *vma; + + vma = kzalloc(sizeof(*vma), GFP_KERNEL); + if (!vma) + return false; + + obj = xe_bo_create_pin_map(i915, xe_device_get_root_tile(i915), + NULL, PAGE_ALIGN(size), + ttm_bo_type_kernel, + XE_BO_CREATE_VRAM_IF_DGFX(xe_device_get_root_tile(i915)) | + XE_BO_CREATE_GGTT_BIT); + if (IS_ERR(obj)) { + kfree(vma); + return false; + } + + vma->bo = obj; + dsb_buf->vma = vma; + dsb_buf->buf_size = size; + + return true; +} + +void intel_dsb_buffer_cleanup(struct intel_dsb_buffer *dsb_buf) +{ + xe_bo_unpin_map_no_vm(dsb_buf->vma->bo); + kfree(dsb_buf->vma); +} + +void intel_dsb_buffer_flush_map(struct intel_dsb_buffer *dsb_buf) +{ + /* TODO: add xe specific flush_map() for dsb buffer object. */ +} |