From patchwork Wed Feb 12 22:12:49 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ang, Tien Sung" X-Patchwork-Id: 13972510 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (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 3104F190470; Wed, 12 Feb 2025 22:16:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739398594; cv=none; b=EgbdC8vHnueL+CfqF4imaSyMCQwFSMDT8Kthgi+MKvOEfVNlYDK7BFU6MNzKzcg9W75s0mgkUTkoFUoyHGEX2skMDcUf9+WOeHrDpKbi99GQ6tVVsKF1uIuRgKwAKlEriM0jUVFmNuHoWzQ0HNXmqmqT9Os3Ec6xelstD2LLyHo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739398594; c=relaxed/simple; bh=kNDG/gEhiX5P6/7ND6hRtddzOBz2ryqMmMGUppU/+Fs=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=DLFTWxOBeVPFslLwfYMZ03osgonrBH+Q9ylUudNdSYqiWmspkrne4Wc5k6JPjmsNez2dnaq54lkrmcXbQu5mHgCUoQDsqOFjYxG7a0grxfzlej77ENZpNn5KigG20uYtlUdV+dXik5x0/5ibAlAXALBnjswn9Vzx62nJpa7uJH4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=RuYw5nad; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="RuYw5nad" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739398592; x=1770934592; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=kNDG/gEhiX5P6/7ND6hRtddzOBz2ryqMmMGUppU/+Fs=; b=RuYw5nadeTrNlUZD4udC+PgBvETILiA9ow7QCho22iu0OOjTdzRzS3I9 UokC3E3bW8pOUlVWYni4YXtgwUX6mo/OOEMGKxR2gJxYyOku63Mj4m3Dv wJVPNZY0Nrucl492PkXJfiQqbV1lAdQkfxVzyEqdJnOBNQfLK/O6MHbeL xhOOLUWCyKlDHbUuCpsmu+lQ0IRb9dObynNVswm8K1/JeVpLcAFLm+eH8 U+bkltvV/X2QmWoWvwDaRgUuc0BFzvpynnENw67N3MXaBziHRUEqBh3JQ zR7a7SuQ0dzVgFahxFz6fG3zi4NooQGLknEEhFm1AJ9LXXduPeFya2X++ A==; X-CSE-ConnectionGUID: bfFxhWuESvC4SFRK0g+Jxw== X-CSE-MsgGUID: h+lgoIbpSfq6Afe4NFWcRA== X-IronPort-AV: E=McAfee;i="6700,10204,11343"; a="51066689" X-IronPort-AV: E=Sophos;i="6.13,281,1732608000"; d="scan'208";a="51066689" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Feb 2025 14:16:32 -0800 X-CSE-ConnectionGUID: 96gXPdYgRO2hb2f6hjraLw== X-CSE-MsgGUID: AkjgMlqmQduJcg5E8fOQcA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="150123862" Received: from pg15swiplab1181.png.altera.com ([10.244.232.167]) by orviesa001.jf.intel.com with ESMTP; 12 Feb 2025 14:16:29 -0800 From: tien.sung.ang@intel.com To: Moritz Fischer , Wu Hao , Xu Yilun , Tom Rix , linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org, kuhanh.murugasen.krishnan@intel.com, kuhanh.murugasen.krishnan@altera.com Cc: Ang Tien Sung Subject: [PATCH] fpga: altera-cvp: Increase credit timeout Date: Thu, 13 Feb 2025 06:12:49 +0800 Message-Id: <20250212221249.2715929-1-tien.sung.ang@intel.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-fpga@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Kuhanh Murugasen Krishnan Increase the timeout for SDM (Secure device manager) data credits from 20ms to 40ms. Internal stress tests running at 500 loops failed with the current timeout of 20ms. At the start of a FPGA configuration, the CVP host driver reads the transmit credits from SDM. It then sends bitstream FPGA data to SDM based on the total credits. Each credit allows the CVP host driver to send 4kBytes of data. There are situations whereby, the SDM did not respond in time during testing. Signed-off-by: Ang Tien Sung Signed-off-by: Kuhanh Murugasen Krishnan --- drivers/fpga/altera-cvp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/fpga/altera-cvp.c b/drivers/fpga/altera-cvp.c index 6b0914432445..5af0bd33890c 100644 --- a/drivers/fpga/altera-cvp.c +++ b/drivers/fpga/altera-cvp.c @@ -52,7 +52,7 @@ /* V2 Defines */ #define VSE_CVP_TX_CREDITS 0x49 /* 8bit */ -#define V2_CREDIT_TIMEOUT_US 20000 +#define V2_CREDIT_TIMEOUT_US 40000 #define V2_CHECK_CREDIT_US 10 #define V2_POLL_TIMEOUT_US 1000000 #define V2_USER_TIMEOUT_US 500000