class PlaneSurfaceStride

Defined at line 111 of file ../../src/graphics/display/drivers/intel-display/registers-pipe.h

PLANE_STRIDE (Plane Stride)

This register is double-buffered. Changes are reflected at the start of the

next Vblank (vertical blank period) after the PLANE_SURF register is written.

This register can be written safely without reading it first. On Tiger Lake,

all reserved bits are explicitly documented as MBZ (must be zero). While this

is not the case for the Kaby Lake and Skylake, experiments and the OpenBSD

i915 driver suggest that writing zeros to the reserved bits is safe.

Tiger Lake: IHD-OS-TGL-Vol 2c-1.22-Rev2.0 Part 2 pages 832-836

Kaby Lake: IHD-OS-KBL-Vol 2c-1.17 Part 2 pages 603-606

Skylake: IHD-OS-SKL-Vol 2c-05.16 Part 2 page 598-600

Public Members

 field_RsvdZ_115

 field_stride_126

static const uint32_t kBaseAddr

template <, >

SelfType & set_stride (typename SelfType::ValueType val)

The stride of the plane.

Linear memory: the value is a cache line (64 bytes) count.

X-Tiled and Y-tiled memory: the value is a number of tiles.

The stride must not exceed the size of 8192 pixels.

On Kaby Lake and Skylake, the stride size must not exceed 32KB. On Kaby

Lake and Skylake, the stride field only takes up bits 9-0.

Defined at line 126 of file ../../src/graphics/display/drivers/intel-display/registers-pipe.h

template <, >