Intel-GFX Archive on lore.kernel.org
 help / color / mirror / Atom feed
From: "José Roberto de Souza" <jose.souza@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH] drm/i915/display/fbc: Implement WA 22010751166
Date: Mon, 19 Oct 2020 10:56:09 -0700	[thread overview]
Message-ID: <20201019175609.28715-1-jose.souza@intel.com> (raw)

Underruns happens when plane height + y offset is not a module of 4
when FBC is enabled.

Specification says that it only affects TGL display C stepping and
newer but to simply the check and as TGL is already in final costumers
hands, pre-production display stepping A and B was also included.

BSpec: 52887 ICL
BSpec: 52888 EHL/JSL
BSpec: 52890/55378 TGL
BSpec: 53508 DG1
BSpec: 53273 RKL
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 drivers/gpu/drm/i915/display/intel_fbc.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 135f5e8a4d70..a5b072816a7b 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -907,6 +907,13 @@ static bool intel_fbc_can_activate(struct intel_crtc *crtc)
 		return false;
 	}
 
+	/* Wa_22010751166: icl, ehl, tgl, dg1, rkl */
+	if (INTEL_GEN(dev_priv) >= 11 &&
+	    (cache->plane.src_h + cache->plane.adjusted_y) % 4) {
+		fbc->no_fbc_reason = "plane height + offset is non-modulo of 4";
+		return false;
+	}
+
 	return true;
 }
 
-- 
2.28.0

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

             reply	other threads:[~2020-10-19 17:56 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-19 17:56 José Roberto de Souza [this message]
2020-10-19 18:41 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915/display/fbc: Implement WA 22010751166 Patchwork
2020-10-19 20:30 ` [Intel-gfx] [PATCH] " Matt Roper
2020-10-19 21:44 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for " Patchwork
2020-10-20  0:33   ` Souza, Jose

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201019175609.28715-1-jose.souza@intel.com \
    --to=jose.souza@intel.com \
    --cc=intel-gfx@lists.freedesktop.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox