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 76A5160DE2; Sun, 28 Jan 2024 16:13:38 +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=1706458418; cv=none; b=BUX0dxBxVOtGLTjatpjZZMm+KaewI2553qe6oQRImHrsRhCUhe4a1SuCFbg9sQTgvnH6TZ2uhVfAEeDqIvY9+JqPzv2Jere5uBikTEsQ+gGS+49b/1VT8JBlQqQ0ZLe3uomorh7bbT/z2MOAx7jvDFCCDZlhrM18ExyxgPraUvo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706458418; c=relaxed/simple; bh=bAcWqAhQUqIXHIRsmqUiFdqDByAUih+G9oofDlAEWLc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BoW7OH/pkhw21acK0Q8BJbgy12Jr2zWza7upbd7jWNJt/D9KRfXbq8M37IKXAw/bCcCHG1tIf9q28pjp2FkOxwRmJK6LGhfPTtNNPq6DwDIVWNH6oJ+qJkGCd6FtI24xXYVrjbFpDiqtt25G0heJU43+HoQpBEQTZPdV7nRtGrw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=k1GD1WhQ; 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="k1GD1WhQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 38A15C433A6; Sun, 28 Jan 2024 16:13:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706458417; bh=bAcWqAhQUqIXHIRsmqUiFdqDByAUih+G9oofDlAEWLc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k1GD1WhQFjGPKnWesPYcx9s/POQEHNOleV3yEj6LKdWX1ksJUV4MIx8iwxTRpicAA T0NaEOEua8xGvVv/iUKAV3qSYogD6JoQ13YFGhctl7EIemH6LdztPH1F08mjhP91ts WrmDznKIa1yMHz6RA1GPQa0DcdXp3LlXOU4ZWctrT5qQp4yAgs8VT0CRmd9+P0Pig2 tbSQaE6MXysq6L6lUv5wOHRXdDyLtfACzWDn7fOadJ7P6uwAli1yM6VlNSoDHO0fyO O8veMvKi9QhZ1LHcy+ESW3zI72mVo3MEGMjV/bzuIPotJfzkrsiO8e+DXYRsoLV+TL 4tEW1oO5jWNIA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Bjorn Helgaas , Sasha Levin , linux-pci@vger.kernel.org Subject: [PATCH AUTOSEL 6.6 13/31] PCI: Fix 64GT/s effective data rate calculation Date: Sun, 28 Jan 2024 11:12:43 -0500 Message-ID: <20240128161315.201999-13-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240128161315.201999-1-sashal@kernel.org> References: <20240128161315.201999-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.6.14 Content-Transfer-Encoding: 8bit From: Ilpo Järvinen [ Upstream commit ac4f1897fa5433a1b07a625503a91b6aa9d7e643 ] Unlike the lower rates, the PCIe 64GT/s Data Rate uses 1b/1b encoding, not 128b/130b (PCIe r6.1 sec 1.2, Table 1-1). Correct the PCIE_SPEED2MBS_ENC() calculation to reflect that. Link: https://lore.kernel.org/r/20240102172701.65501-1-ilpo.jarvinen@linux.intel.com Signed-off-by: Ilpo Järvinen Signed-off-by: Bjorn Helgaas Signed-off-by: Sasha Levin --- drivers/pci/pci.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 5484048f457d..99abc4cec0df 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -269,7 +269,7 @@ void pci_bus_put(struct pci_bus *bus); /* PCIe speed to Mb/s reduced by encoding overhead */ #define PCIE_SPEED2MBS_ENC(speed) \ - ((speed) == PCIE_SPEED_64_0GT ? 64000*128/130 : \ + ((speed) == PCIE_SPEED_64_0GT ? 64000*1/1 : \ (speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \ (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \ (speed) == PCIE_SPEED_8_0GT ? 8000*128/130 : \ -- 2.43.0