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| author | Praveen Paneri <praveen.paneri@intel.com> | 2017-08-10 21:30:33 +0300 |
|---|---|---|
| committer | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2017-08-26 03:13:33 +0300 |
| commit | 5654a1623c8717c40384b1b79251b4d9dd73b751 (patch) | |
| tree | a1b2fbfd6a64b5040e72a91d55381059c40b8c49 | |
| parent | dfbd4508326218d63e75715217a495adc0b4a454 (diff) | |
| download | linux-5654a1623c8717c40384b1b79251b4d9dd73b751.tar.xz | |
drm/i915: Fix FBC cfb stride programming for non X-tiled FB
When FBC is enabled for linear, legacy Y-tiled and Yf-tiled
surfaces on gen9, the cfb stride must be programmed by SW as
cfb_stride = ceiling[(at least plane width in pixels)/
(32 * compression limit factor)] * 8
v2: Minor fix for a build error
v3: Fixed subject, register name and platform check (Ville)
v4: Added WA details in comment (Paulo)
v5:
- Read modified reg write to preserve other bit values (Paulo)
- Store modified stride value in reg_params (Paulo)
- Keep GLK out of the WA (Paulo)
v6:
- added additional field in reg_params for gen9_wa_cfb_stride (Paulo)
- Used appropriate bit mask while writing the register (Paulo)
v7 (from Paulo):
- Fix coding style and spacing issues.
- Mask the old values before writing.
- Bikeshed comments and unnecessary checks.
Signed-off-by: Praveen Paneri <praveen.paneri@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502389833-32621-1-git-send-email-praveen.paneri@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_fbc.c | 17 |
3 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 185a7bf75598..8352cbe0c444 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1107,6 +1107,7 @@ struct intel_fbc { } fb; int cfb_size; + unsigned int gen9_wa_cfb_stride; } params; struct intel_fbc_work { diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index c59c590e45c4..e2908ae34004 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6923,6 +6923,10 @@ enum { #define GLK_CL1_PWR_DOWN (1 << 11) #define GLK_CL0_PWR_DOWN (1 << 10) +#define CHICKEN_MISC_4 _MMIO(0x4208c) +#define FBC_STRIDE_OVERRIDE (1 << 13) +#define FBC_STRIDE_MASK 0x1FFF + #define _CHICKEN_PIPESL_1_A 0x420b0 #define _CHICKEN_PIPESL_1_B 0x420b4 #define HSW_FBCQ_DIS (1 << 22) diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c index 3fca9fa39a8e..55ed6bb2f6c7 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -291,6 +291,19 @@ static void gen7_fbc_activate(struct drm_i915_private *dev_priv) u32 dpfc_ctl; int threshold = dev_priv->fbc.threshold; + /* Display WA #0529: skl, kbl, bxt. */ + if (IS_GEN9(dev_priv) && !IS_GEMINILAKE(dev_priv)) { + u32 val = I915_READ(CHICKEN_MISC_4); + + val &= ~(FBC_STRIDE_OVERRIDE | FBC_STRIDE_MASK); + + if (i915_gem_object_get_tiling(params->vma->obj) != + I915_TILING_X) + val |= FBC_STRIDE_OVERRIDE | params->gen9_wa_cfb_stride; + + I915_WRITE(CHICKEN_MISC_4, val); + } + dpfc_ctl = 0; if (IS_IVYBRIDGE(dev_priv)) dpfc_ctl |= IVB_DPFC_CTL_PLANE(params->crtc.plane); @@ -883,6 +896,10 @@ static void intel_fbc_get_reg_params(struct intel_crtc *crtc, params->fb.stride = cache->fb.stride; params->cfb_size = intel_fbc_calculate_cfb_size(dev_priv, cache); + + if (IS_GEN9(dev_priv) && !IS_GEMINILAKE(dev_priv)) + params->gen9_wa_cfb_stride = DIV_ROUND_UP(cache->plane.src_w, + 32 * fbc->threshold) * 8; } static bool intel_fbc_reg_params_equal(struct intel_fbc_reg_params *params1, |