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 4C9C01465A8; Tue, 25 Jun 2024 09:48:24 +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=1719308904; cv=none; b=fUs1+otN0YMmhjsmA8XXX4v9aVpmP8hB0M6CxbfvGTHBBTENFUVmEPVzms7f35DKVTX5fduO6RxmlIHBWrKYbrkkGaI9GhvplnBtZo0m5ORLQ1/vRuTBvNLsOXuiPnTSXZO43hYY8GOGOWaY2xsr6bmT0q5/iRgvn2QJ2DyKoXI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719308904; c=relaxed/simple; bh=jNqJRQYg4s0ja8IX9iagX5PcwwDkTenGxj/QLyex7yg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qlof2ZAzq8BnyOaKGagxk8JVUa1VzgqZD8Psb5whM8qm+vW454pcscdL6rQiG7p1/G1as4wHAUUzQHUsVaFbE3rb8Ij+ZicoZ4muh//6l6gkw12upFBcK+Ux5XQMXnXF61LF6OgvO0oC+8Kw+Un9NhfZSdU8+8SU/X7RciL4jMo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HWMxhJgH; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="HWMxhJgH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7ED0EC32781; Tue, 25 Jun 2024 09:48:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1719308903; bh=jNqJRQYg4s0ja8IX9iagX5PcwwDkTenGxj/QLyex7yg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HWMxhJgHSap/h5oHNfVkqj2ZRCRV1G8WSL2NtntDrNkpXM80JlUDvWL7t2sULRLsX 7/x7jHwax1zLZu1FEJ1HTTzEdwA4hhjH/uoQC+HU2/6ZRB3caLK3wTrjNYmTpcRnFD 7XUDeFg7CAd4uFxGAyBQItwHrztUm4bAcPp1LxII= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mario Limonciello , Alex Deucher , Charlene Liu , Alex Hung , Nicholas Kazlauskas , Daniel Wheeler , Sasha Levin Subject: [PATCH 6.6 029/192] drm/amd/display: Exit idle optimizations before HDCP execution Date: Tue, 25 Jun 2024 11:31:41 +0200 Message-ID: <20240625085538.280047738@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240625085537.150087723@linuxfoundation.org> References: <20240625085537.150087723@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ 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