From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 84F2E17E8E2; Mon, 27 May 2024 15:51:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716825098; cv=none; b=YUYhmBHgiSRMD7KKCWL4n9d8PcMVt8e93zKF0+baCJQx9JdscrKPzaf4KuXUky55BKXtfv4YLiupz8YY/eflGLnTODMieBgs3mwUgMfYLjxAWgsX8xboB/0n/9fFDRBcaTbgXX/ScdE2B6aJn2laL3iSDhYbibUg96voS8+BjKA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716825098; c=relaxed/simple; bh=X5KGBxxFXxnv3x0Ob+GF5Asew3YBonDrWe3a4Pa7rZs=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=cpEglXhCm3v1zJ3iixgCcD9AVIZHCel4mFq0/K5FFoEHRaYwfTmwEDYfWvy8LtUcMERN7Yl3i92oCBEpUrR3oGZ3nvuwZs1/0NBwLHbRbe26kiyt5a7fBnmX5MKJb1A66mVHEHSpjLymqZvi0+Rsc2I58Fe1x4q235fl3O4B6B0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=U98CLGit; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="U98CLGit" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D88D2C2BBFC; Mon, 27 May 2024 15:51:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716825098; bh=X5KGBxxFXxnv3x0Ob+GF5Asew3YBonDrWe3a4Pa7rZs=; h=From:To:Cc:Subject:Date:From; b=U98CLGitS+2ZMQaflueQm7lxxUVRkffEOjmyQRpiX1nnuirGGe3goS8OIeBrUaAP+ Z8oSVx70fKCVqPTCfPG7x4F3d1yNYB+Lh1rOhl4A9TbtoEc+PgaBdXn40X9xn2Hcvc /DEcBdnz4q7fxY2AGbAhklafjoX3tw09rW2dJTK+bGAL1ADaVuB6m4KXKY99GHu7Rx wW/OUzJp5a7XTDWBiTtqti22LxcZh7ATTV7F/4vMcoalZJlaQI3uJISb7HGiABChai 0iC/gVevaQvwFXMtfoNdos4owkFFSPik8jdjHEX9ax9Ny9WPHFIvaF3k8EJ/Pm5z8I svNgRHyw022sg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nicholas Kazlauskas , Mario Limonciello , Alex Deucher , Charlene Liu , Alex Hung , Daniel Wheeler , Sasha Levin , harry.wentland@amd.com, sunpeng.li@amd.com, Rodrigo.Siqueira@amd.com, christian.koenig@amd.com, Xinhui.Pan@amd.com, airlied@gmail.com, daniel@ffwll.ch, martin.leung@amd.com, wayne.lin@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.9 01/23] drm/amd/display: Exit idle optimizations before HDCP execution Date: Mon, 27 May 2024 11:50:02 -0400 Message-ID: <20240527155123.3863983-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.9.2 Content-Transfer-Encoding: 8bit From: Nicholas Kazlauskas [ Upstream commit f30a3bea92bdab398531129d187629fb1d28f598 ] [WHY] PSP can access DCN registers during command submission and we need to ensure that DCN is not in PG before doing so. [HOW] Add a callback to DM to lock and notify DC for idle optimization exit. It can't be DC directly because of a potential race condition with the link protection thread and the rest of DM operation. Cc: Mario Limonciello Cc: Alex Deucher Reviewed-by: Charlene Liu Acked-by: Alex Hung Signed-off-by: Nicholas Kazlauskas Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c | 10 ++++++++++ drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h | 8 ++++++++ 2 files changed, 18 insertions(+) diff --git a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c index 5e01c6e24cbc8..9a5a1726acaf8 100644 --- a/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c +++ b/drivers/gpu/drm/amd/display/modules/hdcp/hdcp.c @@ -88,6 +88,14 @@ static uint8_t is_cp_desired_hdcp2(struct mod_hdcp *hdcp) !hdcp->connection.is_hdcp2_revoked; } +static void exit_idle_optimizations(struct mod_hdcp *hdcp) +{ + struct mod_hdcp_dm *dm = &hdcp->config.dm; + + if (dm->funcs.exit_idle_optimizations) + dm->funcs.exit_idle_optimizations(dm->handle); +} + static enum mod_hdcp_status execution(struct mod_hdcp *hdcp, struct mod_hdcp_event_context *event_ctx, union mod_hdcp_transition_input *input) @@ -543,6 +551,8 @@ enum mod_hdcp_status mod_hdcp_process_event(struct mod_hdcp *hdcp, memset(&event_ctx, 0, sizeof(struct mod_hdcp_event_context)); event_ctx.event = event; + exit_idle_optimizations(hdcp); + /* execute and transition */ exec_status = execution(hdcp, &event_ctx, &hdcp->auth.trans_input); trans_status = transition( diff --git a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h index a4d344a4db9e1..cdb17b093f2b8 100644 --- a/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h +++ b/drivers/gpu/drm/amd/display/modules/inc/mod_hdcp.h @@ -156,6 +156,13 @@ struct mod_hdcp_ddc { } funcs; }; +struct mod_hdcp_dm { + void *handle; + struct { + void (*exit_idle_optimizations)(void *handle); + } funcs; +}; + struct mod_hdcp_psp { void *handle; void *funcs; @@ -272,6 +279,7 @@ struct mod_hdcp_display_query { struct mod_hdcp_config { struct mod_hdcp_psp psp; struct mod_hdcp_ddc ddc; + struct mod_hdcp_dm dm; uint8_t index; }; -- 2.43.0