Re: [PATCH v2 9/9] drm/i915: Add render decompression support

Jason Ekstrand
2017-01-09T19:20:59Z

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On Thu, Jan 5, 2017 at 7:14 AM, <ville.syrjala@linux.intel.com> wrote:

> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> SKL+ display engine can scan out certain kinds of compressed surfaces
> produced by the render engine. This involved telling the display engine
> the location of the color control surfae (CCS) which describes
> which parts of the main surface are compressed and which are not. The
> location of CCS is provided by userspace as just another plane with its
> own offset.
>
> Add the required stuff to validate the user provided AUX plane metadata
> and convert the user provided linear offset into something the hardware
> can consume.
>
> Due to hardware limitations we require that the main surface and
> the AUX surface (CCS) be part of the same bo. The hardware also
> makes life hard by not allowing you to provide separate x/y offsets
> for the main and AUX surfaces (excpet with NV12), so finding suitable
> offsets for both requires a bit of work. Assuming we still want keep
> playing tricks with the offsets. I've just gone with a dumb "search
> backward for suitable offsets" approach, which is far from optimal,
> but it works.
>
> Also not all planes will be capable of scanning out compressed surfaces,
> and eg. 90/270 degree rotation is not supported in combination with
> decompression either.
>
> This patch may contain work from at least the following people:
> * Vandana Kannan <vandana.kannan@intel.com>
> * Daniel Vetter <daniel@ffwll.ch>
> * Ben Widawsky <ben@bwidawsk.net>
>
> v2: Deal with display workarounds 0390, 0531, 1125 (Paulo)
>
> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
> Cc: Vandana Kannan <vandana.kannan@intel.com>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Ben Widawsky <ben@bwidawsk.net>
> Cc: Jason Ekstrand <jason@jlekstrand.net>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 23 ++++
> drivers/gpu/drm/i915/intel_display.c | 234 ++++++++++++++++++++++++++++++
> ++---
> drivers/gpu/drm/i915/intel_pm.c | 29 ++++-
> drivers/gpu/drm/i915/intel_sprite.c | 5 +
> 4 files changed, 274 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_
> reg.h
> index 00970aa77afa..6849ba93f1d9 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -6209,6 +6209,28 @@ enum {
> _ID(id, _PS_ECC_STAT_1A, _PS_ECC_STAT_2A), \
> _ID(id, _PS_ECC_STAT_1B, _PS_ECC_STAT_2B))
>
> +#define PLANE_AUX_DIST_1_A 0x701c0
> +#define PLANE_AUX_DIST_2_A 0x702c0
> +#define PLANE_AUX_DIST_1_B 0x711c0
> +#define PLANE_AUX_DIST_2_B 0x712c0
> +#define _PLANE_AUX_DIST_1(pipe) \
> + _PIPE(pipe, PLANE_AUX_DIST_1_A, PLANE_AUX_DIST_1_B)
> +#define _PLANE_AUX_DIST_2(pipe) \
> + _PIPE(pipe, PLANE_AUX_DIST_2_A, PLANE_AUX_DIST_2_B)
> +#define PLANE_AUX_DIST(pipe, plane) \
> + _MMIO_PLANE(plane, _PLANE_AUX_DIST_1(pipe),
> _PLANE_AUX_DIST_2(pipe))
> +
> +#define PLANE_AUX_OFFSET_1_A 0x701c4
> +#define PLANE_AUX_OFFSET_2_A 0x702c4
> +#define PLANE_AUX_OFFSET_1_B 0x711c4
> +#define PLANE_AUX_OFFSET_2_B 0x712c4
> +#define _PLANE_AUX_OFFSET_1(pipe) \
> + _PIPE(pipe, PLANE_AUX_OFFSET_1_A, PLANE_AUX_OFFSET_1_B)
> +#define _PLANE_AUX_OFFSET_2(pipe) \
> + _PIPE(pipe, PLANE_AUX_OFFSET_2_A, PLANE_AUX_OFFSET_2_B)
> +#define PLANE_AUX_OFFSET(pipe, plane) \
> + _MMIO_PLANE(plane, _PLANE_AUX_OFFSET_1(pipe),
> _PLANE_AUX_OFFSET_2(pipe))
> +
> /* legacy palette */
> #define _LGC_PALETTE_A 0x4a000
> #define _LGC_PALETTE_B 0x4a800
> @@ -6433,6 +6455,7 @@ enum {
> # define CHICKEN3_DGMG_DONE_FIX_DISABLE (1 << 2)
>
> #define CHICKEN_PAR1_1 _MMIO(0x42080)
> +#define SKL_RC_HASH_OUTSIDE (1 << 15)
> #define DPA_MASK_VBLANK_SRD (1 << 15)
> #define FORCE_ARB_IDLE_PLANES (1 << 14)
> #define SKL_EDP_PSR_FIX_RDWRAP (1 << 3)
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index 38de9df0ec60..2236abebd8bc 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -2064,11 +2064,19 @@ intel_tile_width_bytes(const struct
> drm_framebuffer *fb, int plane)
> return 128;
> else
> return 512;
> + case I915_FORMAT_MOD_Y_TILED_CCS:
> + if (plane == 1)
> + return 64;
> + /* fall through */
> case I915_FORMAT_MOD_Y_TILED:
> if (IS_GEN2(dev_priv) || HAS_128_BYTE_Y_TILING(dev_priv))
> return 128;
> else
> return 512;
> + case I915_FORMAT_MOD_Yf_TILED_CCS:
> + if (plane == 1)
> + return 64;
>

I still think a CCS tile is 128B wide. :-)

> + /* fall through */
> case I915_FORMAT_MOD_Yf_TILED:
> /*
> * Bspec seems to suggest that the Yf tile width would
> @@ -2156,7 +2164,7 @@ static unsigned int intel_surf_alignment(const
> struct drm_framebuffer *fb,
> struct drm_i915_private *dev_priv = to_i915(fb->dev);
>
> /* AUX_DIST needs only 4K alignment */
> - if (fb->format->format == DRM_FORMAT_NV12 && plane == 1)
> + if (plane == 1)
> return 4096;
>
> switch (fb->modifier) {
> @@ -2166,6 +2174,8 @@ static unsigned int intel_surf_alignment(const
> struct drm_framebuffer *fb,
> if (INTEL_GEN(dev_priv) >= 9)
> return 256 * 1024;
> return 0;
> + case I915_FORMAT_MOD_Y_TILED_CCS:
> + case I915_FORMAT_MOD_Yf_TILED_CCS:
> case I915_FORMAT_MOD_Y_TILED:
> case I915_FORMAT_MOD_Yf_TILED:
> return 1 * 1024 * 1024;
> @@ -2472,6 +2482,7 @@ static unsigned int intel_fb_modifier_to_tiling(uint64_t
> fb_modifier)
> case I915_FORMAT_MOD_X_TILED:
> return I915_TILING_X;
> case I915_FORMAT_MOD_Y_TILED:
> + case I915_FORMAT_MOD_Y_TILED_CCS:
> return I915_TILING_Y;
> default:
> return I915_TILING_NONE;
> @@ -2536,6 +2547,35 @@ intel_fill_fb_info(struct drm_i915_private
> *dev_priv,
>
> intel_fb_offset_to_xy(&x, &y, fb, i);
>
> + if ((fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
> + fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) && i ==
> 1) {
> + int main_x, main_y;
> + int ccs_x, ccs_y;
> +
> + /*
> + * Each byte of CCS corresponds to a 16x8 area of
> the main surface, and
> + * each CCS tile is 64x64 bytes.
> + */
> + ccs_x = (x * 16) % (64 * 16);
> + ccs_y = (y * 8) % (64 * 8);
>

This makes me nervous. Why are we multiplying CCS coordinates by something
before we do the modulus? Why aren't coordinates in both surfaces in
pixels? So long as you keep things in pixesl and know that a CCS tile is
1024x512px and a color tile is 32x32 pixels, you can safely do tile
offsetting and it all makes sense. Having different units looks like a
recipe for some very confusing bugs. Am I just completely misunderstanding
what's going on here?

> + main_x = intel_fb->normal[0].x % (64 * 16);
> + main_y = intel_fb->normal[0].y % (64 * 8);
>
+
> + /*
> + * CCS doesn't have its own x/y offset register,
> so the intra CCS tile
> + * x/y offsets must match between CCS and the main
> surface.
> + */
> + if (main_x != ccs_x || main_y != ccs_y) {
> + DRM_DEBUG_KMS("Bad CCS x/y (main %d,%d ccs
> %d,%d) full (main %d,%d ccs %d,%d)\n",
> + main_x, main_y,
> + ccs_x, ccs_y,
> + intel_fb->normal[0].x,
> + intel_fb->normal[0].y,
> + x, y);
> + return -EINVAL;
> + }
> + }
> +
> /*
> * The fence (if used) is aligned to the start of the
> object
> * so having the framebuffer wrap around across the edge
> of the
> @@ -2873,6 +2913,9 @@ static int skl_max_plane_width(const struct
> drm_framebuffer *fb, int plane,
> break;
> }
> break;
> + case I915_FORMAT_MOD_Y_TILED_CCS:
> + case I915_FORMAT_MOD_Yf_TILED_CCS:
> + /* FIXME AUX plane? */
> case I915_FORMAT_MOD_Y_TILED:
> case I915_FORMAT_MOD_Yf_TILED:
> switch (cpp) {
> @@ -2895,6 +2938,42 @@ static int skl_max_plane_width(const struct
> drm_framebuffer *fb, int plane,
> return 2048;
> }
>
> +static bool skl_check_main_ccs_coordinates(struct intel_plane_state
> *plane_state,
> + int main_x, int main_y, u32
> main_offset)
> +{
> + const struct drm_framebuffer *fb = plane_state->base.fb;
> + int aux_x = plane_state->aux.x;
> + int aux_y = plane_state->aux.y;
> + u32 aux_offset = plane_state->aux.offset;
> + u32 alignment = intel_surf_alignment(fb, 1);
> +
> + while (aux_offset >= main_offset && aux_y <= main_y) {
> + int x, y;
> +
> + if (aux_x == main_x && aux_y == main_y)
> + break;
> +
> + if (aux_offset == 0)
> + break;
> +
> + x = aux_x / 16;
> + y = aux_y / 8;
> + aux_offset = intel_adjust_tile_offset(&x, &y, plane_state,
> 1,
> + aux_offset,
> aux_offset - alignment);
> + aux_x = x * 16 + aux_x % 16;
> + aux_y = y * 8 + aux_y % 8;
> + }
> +
> + if (aux_x != main_x || aux_y != main_y)
> + return false;
> +
> + plane_state->aux.offset = aux_offset;
> + plane_state->aux.x = aux_x;
> + plane_state->aux.y = aux_y;
> +
> + return true;
> +}
> +
> static int skl_check_main_surface(struct intel_plane_state *plane_state)
> {
> const struct drm_framebuffer *fb = plane_state->base.fb;
> @@ -2937,7 +3016,7 @@ static int skl_check_main_surface(struct
> intel_plane_state *plane_state)
>
> while ((x + w) * cpp > fb->pitches[0]) {
> if (offset == 0) {
> - DRM_DEBUG_KMS("Unable to find suitable
> display surface offset\n");
> + DRM_DEBUG_KMS("Unable to find suitable
> display surface offset due to X-tiling\n");
> return -EINVAL;
> }
>
> @@ -2946,6 +3025,26 @@ static int skl_check_main_surface(struct
> intel_plane_state *plane_state)
> }
> }
>
> + /*
> + * CCS AUX surface doesn't have its own x/y offsets, we must make
> sure
> + * they match with the main surface x/y offsets.
> + */
> + if (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
> + fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) {
> + while (!skl_check_main_ccs_coordinates(plane_state, x, y,
> offset)) {
> + if (offset == 0)
> + break;
> +
> + offset = intel_adjust_tile_offset(&x, &y,
> plane_state, 0,
> + offset, offset -
> alignment);
> + }
> +
> + if (x != plane_state->aux.x || y != plane_state->aux.y) {
> + DRM_DEBUG_KMS("Unable to find suitable display
> surface offset due to CCS\n");
> + return -EINVAL;
> + }
> + }
> +
> plane_state->main.offset = offset;
> plane_state->main.x = x;
> plane_state->main.y = y;
> @@ -2982,6 +3081,47 @@ static int skl_check_nv12_aux_surface(struct
> intel_plane_state *plane_state)
> return 0;
> }
>
> +static int skl_check_ccs_aux_surface(struct intel_plane_state
> *plane_state)
> +{
> + struct intel_plane *plane = to_intel_plane(plane_state->
> base.plane);
> + struct intel_crtc *crtc = to_intel_crtc(plane_state->base.crtc);
> + int src_x = plane_state->base.src.x1 >> 16;
> + int src_y = plane_state->base.src.y1 >> 16;
> + int x = src_x / 16;
> + int y = src_y / 8;
> + u32 offset;
> +
> + switch (plane->id) {
> + case PLANE_PRIMARY:
> + case PLANE_SPRITE0:
> + break;
> + default:
> + DRM_DEBUG_KMS("RC support only on plane 1 and 2\n");
> + return -EINVAL;
> + }
> +
> + if (crtc->pipe == PIPE_C) {
> + DRM_DEBUG_KMS("No RC support on pipe C\n");
> + return -EINVAL;
> + }
> +
> + if (plane_state->base.rotation &&
> + plane_state->base.rotation & ~(DRM_ROTATE_0 | DRM_ROTATE_180))
> {
> + DRM_DEBUG_KMS("RC support only with 0/180 degree rotation
> %x\n",
> + plane_state->base.rotation);
> + return -EINVAL;
> + }
> +
> + intel_add_fb_offsets(&x, &y, plane_state, 1);
> + offset = intel_compute_tile_offset(&x, &y, plane_state, 1);
> +
> + plane_state->aux.offset = offset;
> + plane_state->aux.x = x * 16 + src_x % 16;
> + plane_state->aux.y = y * 8 + src_y % 8;
> +
> + return 0;
> +}
> +
> int skl_check_plane_surface(struct intel_plane_state *plane_state)
> {
> const struct drm_framebuffer *fb = plane_state->base.fb;
> @@ -3002,6 +3142,11 @@ int skl_check_plane_surface(struct
> intel_plane_state *plane_state)
> ret = skl_check_nv12_aux_surface(plane_state);
> if (ret)
> return ret;
> + } else if (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
> + fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS) {
> + ret = skl_check_ccs_aux_surface(plane_state);
> + if (ret)
> + return ret;
> } else {
> plane_state->aux.offset = ~0xfff;
> plane_state->aux.x = 0;
> @@ -3357,8 +3502,12 @@ u32 skl_plane_ctl_tiling(uint64_t fb_modifier)
> return PLANE_CTL_TILED_X;
> case I915_FORMAT_MOD_Y_TILED:
> return PLANE_CTL_TILED_Y;
> + case I915_FORMAT_MOD_Y_TILED_CCS:
> + return PLANE_CTL_TILED_Y | PLANE_CTL_DECOMPRESSION_ENABLE;
> case I915_FORMAT_MOD_Yf_TILED:
> return PLANE_CTL_TILED_YF;
> + case I915_FORMAT_MOD_Yf_TILED_CCS:
> + return PLANE_CTL_TILED_YF | PLANE_CTL_DECOMPRESSION_
> ENABLE;
> default:
> MISSING_CASE(fb_modifier);
> }
> @@ -3401,6 +3550,7 @@ static void skylake_update_primary_plane(struct
> drm_plane *plane,
> u32 plane_ctl;
> unsigned int rotation = plane_state->base.rotation;
> u32 stride = skl_plane_stride(fb, 0, rotation);
> + u32 aux_stride = skl_plane_stride(fb, 1, rotation);
> u32 surf_addr = plane_state->main.offset;
> int scaler_id = plane_state->scaler_id;
> int src_x = plane_state->main.x;
> @@ -3436,6 +3586,10 @@ static void skylake_update_primary_plane(struct
> drm_plane *plane,
> I915_WRITE(PLANE_OFFSET(pipe, plane_id), (src_y << 16) | src_x);
> I915_WRITE(PLANE_STRIDE(pipe, plane_id), stride);
> I915_WRITE(PLANE_SIZE(pipe, plane_id), (src_h << 16) | src_w);
> + I915_WRITE(PLANE_AUX_DIST(pipe, plane_id),
> + (plane_state->aux.offset - surf_addr) | aux_stride);
> + I915_WRITE(PLANE_AUX_OFFSET(pipe, plane_id),
> + (plane_state->aux.y << 16) | plane_state->aux.x);
>
> if (scaler_id >= 0) {
> uint32_t ps_ctrl = 0;
> @@ -9807,10 +9961,16 @@ skylake_get_initial_plane_config(struct
> intel_crtc *crtc,
> fb->modifier = I915_FORMAT_MOD_X_TILED;
> break;
> case PLANE_CTL_TILED_Y:
> - fb->modifier = I915_FORMAT_MOD_Y_TILED;
> + if (val & PLANE_CTL_DECOMPRESSION_ENABLE)
> + fb->modifier = I915_FORMAT_MOD_Y_TILED_CCS;
> + else
> + fb->modifier = I915_FORMAT_MOD_Y_TILED;
> break;
> case PLANE_CTL_TILED_YF:
> - fb->modifier = I915_FORMAT_MOD_Yf_TILED;
> + if (val & PLANE_CTL_DECOMPRESSION_ENABLE)
> + fb->modifier = I915_FORMAT_MOD_Yf_TILED_CCS;
> + else
> + fb->modifier = I915_FORMAT_MOD_Yf_TILED;
> break;
> default:
> MISSING_CASE(tiling);
> @@ -12014,7 +12174,7 @@ static void skl_do_mmio_flip(struct intel_crtc
> *intel_crtc,
> u32 ctl, stride = skl_plane_stride(fb, 0, rotation);
>
> ctl = I915_READ(PLANE_CTL(pipe, 0));
> - ctl &= ~PLANE_CTL_TILED_MASK;
> + ctl &= ~(PLANE_CTL_TILED_MASK | PLANE_CTL_DECOMPRESSION_ENABLE);
> switch (fb->modifier) {
> case DRM_FORMAT_MOD_NONE:
> break;
> @@ -12024,9 +12184,15 @@ static void skl_do_mmio_flip(struct intel_crtc
> *intel_crtc,
> case I915_FORMAT_MOD_Y_TILED:
> ctl |= PLANE_CTL_TILED_Y;
> break;
> + case I915_FORMAT_MOD_Y_TILED_CCS:
> + ctl |= PLANE_CTL_TILED_Y | PLANE_CTL_DECOMPRESSION_ENABLE;
> + break;
> case I915_FORMAT_MOD_Yf_TILED:
> ctl |= PLANE_CTL_TILED_YF;
> break;
> + case I915_FORMAT_MOD_Yf_TILED_CCS:
> + ctl |= PLANE_CTL_TILED_YF | PLANE_CTL_DECOMPRESSION_
> ENABLE;
> + break;
> default:
> MISSING_CASE(fb->modifier);
> }
> @@ -15925,9 +16091,10 @@ static int intel_framebuffer_init(struct
> drm_device *dev,
> struct drm_i915_gem_object *obj)
> {
> struct drm_i915_private *dev_priv = to_i915(dev);
> + struct drm_framebuffer *fb = &intel_fb->base;
> unsigned int tiling = i915_gem_object_get_tiling(obj);
> - int ret;
> - u32 pitch_limit, stride_alignment;
> + int ret, i;
> + u32 pitch_limit;
> struct drm_format_name_buf format_name;
>
> WARN_ON(!mutex_is_locked(&dev->struct_mutex));
> @@ -15953,6 +16120,19 @@ static int intel_framebuffer_init(struct
> drm_device *dev,
>
> /* Passed in modifier sanity checking. */
> switch (mode_cmd->modifier[0]) {
> + case I915_FORMAT_MOD_Y_TILED_CCS:
> + case I915_FORMAT_MOD_Yf_TILED_CCS:
> + switch (mode_cmd->pixel_format) {
> + case DRM_FORMAT_XBGR8888:
> + case DRM_FORMAT_ABGR8888:
> + case DRM_FORMAT_XRGB8888:
> + case DRM_FORMAT_ARGB8888:
> + break;
> + default:
> + DRM_DEBUG_KMS("RC supported only with RGB8888
> formats\n");
> + return -EINVAL;
> + }
> + /* fall through */
> case I915_FORMAT_MOD_Y_TILED:
> case I915_FORMAT_MOD_Yf_TILED:
> if (INTEL_GEN(dev_priv) < 9) {
> @@ -16059,22 +16239,46 @@ static int intel_framebuffer_init(struct
> drm_device *dev,
> if (mode_cmd->offsets[0] != 0)
> return -EINVAL;
>
> - drm_helper_mode_fill_fb_struct(dev, &intel_fb->base, mode_cmd);
> + drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
>
> - stride_alignment = intel_fb_stride_alignment(&intel_fb->base, 0);
> - if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
> - DRM_DEBUG_KMS("pitch (%d) must be at least %u byte
> aligned\n",
> - mode_cmd->pitches[0], stride_alignment);
> - return -EINVAL;
> + for (i = 0; i < fb->format->num_planes; i++) {
> + u32 stride_alignment;
> +
> + if (mode_cmd->handles[i] != mode_cmd->handles[0]) {
> + DRM_DEBUG_KMS("bad plane %d handle\n", i);
> + return -EINVAL;
> + }
> +
> + stride_alignment = intel_fb_stride_alignment(fb, i);
> +
> + /*
> + * Display WA #0531: skl,bxt,kbl,glk
> + *
> + * Render decompression and plane width > 3840
> + * combined with horizontal panning requires the
> + * plane stride to be a multiple of 4. We'll just
> + * require the entire fb to accommodate that to avoid
> + * potential runtime errors at plane configuration time.
> + */
> + if (IS_GEN9(dev_priv) && i == 0 && fb->width > 3840 &&
> + (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
> + fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS))
> + stride_alignment *= 4;
> +
> + if (fb->pitches[i] & (stride_alignment - 1)) {
> + DRM_DEBUG_KMS("plane %d pitch (%d) must be at
> least %u byte aligned\n",
> + i, fb->pitches[i], stride_alignment);
> + return -EINVAL;
> + }
> }
>
> intel_fb->obj = obj;
>
> - ret = intel_fill_fb_info(dev_priv, &intel_fb->base);
> + ret = intel_fill_fb_info(dev_priv, fb);
> if (ret)
> return ret;
>
> - ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
> + ret = drm_framebuffer_init(dev, fb, &intel_fb_funcs);
> if (ret) {
> DRM_ERROR("framebuffer init failed %d\n", ret);
> return ret;
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_
> pm.c
> index 249623d45be0..25782cd174c0 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -62,6 +62,20 @@ static void gen9_init_clock_gating(struct
> drm_i915_private *dev_priv)
> I915_WRITE(CHICKEN_PAR1_1,
> I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP);
>
> + /*
> + * Display WA#0390: skl,bxt,kbl,glk
> + *
> + * Must match Sampler, Pixel Back End, and Media
> + * (0xE194 bit 8, 0x7014 bit 13, 0x4DDC bits 27 and 31).
> + *
> + * Including bits outside the page in the hash would
> + * require 2 (or 4?) MiB alignment of resources. Just
> + * assume the defaul hashing mode which only uses bits
> + * within the page.
> + */
> + I915_WRITE(CHICKEN_PAR1_1,
> + I915_READ(CHICKEN_PAR1_1) & ~SKL_RC_HASH_OUTSIDE);
> +
> I915_WRITE(GEN8_CONFIG0,
> I915_READ(GEN8_CONFIG0) | GEN9_DEFAULT_FIXES);
>
> @@ -3314,7 +3328,9 @@ skl_ddb_min_alloc(const struct drm_plane_state
> *pstate,
>
> /* For Non Y-tile return 8-blocks */
> if (fb->modifier != I915_FORMAT_MOD_Y_TILED &&
> - fb->modifier != I915_FORMAT_MOD_Yf_TILED)
> + fb->modifier != I915_FORMAT_MOD_Yf_TILED &&
> + fb->modifier != I915_FORMAT_MOD_Y_TILED_CCS &&
> + fb->modifier != I915_FORMAT_MOD_Yf_TILED_CCS)
> return 8;
>
> src_w = drm_rect_width(&intel_pstate->base.src) >> 16;
> @@ -3590,7 +3606,9 @@ static int skl_compute_plane_wm(const struct
> drm_i915_private *dev_priv,
> }
>
> y_tiled = fb->modifier == I915_FORMAT_MOD_Y_TILED ||
> - fb->modifier == I915_FORMAT_MOD_Yf_TILED;
> + fb->modifier == I915_FORMAT_MOD_Yf_TILED ||
> + fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
> + fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
> x_tiled = fb->modifier == I915_FORMAT_MOD_X_TILED;
>
> /* Display WA #1141: kbl. */
> @@ -3675,6 +3693,13 @@ static int skl_compute_plane_wm(const struct
> drm_i915_private *dev_priv,
> res_lines = DIV_ROUND_UP(selected_result.val,
> plane_blocks_per_line.val);
>
> + /* Display WA #1125: skl,bxt,kbl,glk */
> + if (level == 0 &&
> + (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
> + fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS))
> + res_blocks += fixed_16_16_to_u32_round_up(y_tile_minimum);
> +
> + /* Display WA #1126: skl,bxt,kbl,glk */
> if (level >= 1 && level <= 7) {
> if (y_tiled) {
> res_blocks += fixed_16_16_to_u32_round_up(y_
> tile_minimum);
> diff --git a/drivers/gpu/drm/i915/intel_sprite.c
> b/drivers/gpu/drm/i915/intel_sprite.c
> index 7031bc733d97..063a994815d0 100644
> --- a/drivers/gpu/drm/i915/intel_sprite.c
> +++ b/drivers/gpu/drm/i915/intel_sprite.c
> @@ -210,6 +210,7 @@ skl_update_plane(struct drm_plane *drm_plane,
> u32 surf_addr = plane_state->main.offset;
> unsigned int rotation = plane_state->base.rotation;
> u32 stride = skl_plane_stride(fb, 0, rotation);
> + u32 aux_stride = skl_plane_stride(fb, 1, rotation);
> int crtc_x = plane_state->base.dst.x1;
> int crtc_y = plane_state->base.dst.y1;
> uint32_t crtc_w = drm_rect_width(&plane_state->base.dst);
> @@ -248,6 +249,10 @@ skl_update_plane(struct drm_plane *drm_plane,
> I915_WRITE(PLANE_OFFSET(pipe, plane_id), (y << 16) | x);
> I915_WRITE(PLANE_STRIDE(pipe, plane_id), stride);
> I915_WRITE(PLANE_SIZE(pipe, plane_id), (src_h << 16) | src_w);
> + I915_WRITE(PLANE_AUX_DIST(pipe, plane_id),
> + (plane_state->aux.offset - surf_addr) | aux_stride);
> + I915_WRITE(PLANE_AUX_OFFSET(pipe, plane_id),
> + (plane_state->aux.y << 16) | plane_state->aux.x);
>
> /* program plane scaler */
> if (plane_state->scaler_id >= 0) {
> --
> 2.10.2
>
>

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