From patchwork Fri Mar 9 19:00:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 883934 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zycFQ4wMHz9sfg for ; Sat, 10 Mar 2018 06:02:18 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932760AbeCITAa (ORCPT ); Fri, 9 Mar 2018 14:00:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:40892 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932759AbeCITA2 (ORCPT ); Fri, 9 Mar 2018 14:00:28 -0500 Received: from localhost (unknown [104.132.51.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BE1542133D; Fri, 9 Mar 2018 19:00:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BE1542133D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=helgaas@kernel.org Subject: [PATCH v2 07/13] PCI/portdrv: Remove unused PCIE_PORT_SERVICE_VC From: Bjorn Helgaas To: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , linux-pm@vger.kernel.org, Keith Busch , Sinan Kaya , Lukas Wunner , Frederick Lawler Date: Fri, 09 Mar 2018 13:00:27 -0600 Message-ID: <152062202742.77693.2491710394330502440.stgit@bhelgaas-glaptop.roam.corp.google.com> In-Reply-To: <152062141493.77693.9630397416694091342.stgit@bhelgaas-glaptop.roam.corp.google.com> References: <152062141493.77693.9630397416694091342.stgit@bhelgaas-glaptop.roam.corp.google.com> User-Agent: StGit/0.18 MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Bjorn Helgaas No driver registers for PCIE_PORT_SERVICE_VC, so remove it. This removes the VC "service" files from /sys/bus/pci_express/devices, e.g., 0000:07:00.0:pcie108, 0000:08:04.0:pcie208 (all the files that contained "8" as the last digit of the "pcieXXX" part). The port driver created these files for PCIe port devices that have a VC Capability. Since this reduces PCIE_PORT_DEVICE_MAXSERVICES and moves DPC down into the spot where VC used to be, the DPC sysfs files will now be named "pcieXX8". I don't think there's anything useful userspace can do with those files, so I hope nobody cares about these filenames. There is no VC driver that calls pcie_port_service_register(), so there never was a /sys/bus/pci_express/drivers/vc directory. Signed-off-by: Bjorn Helgaas Reviewed-by: Rafael J. Wysocki Reviewed-by: Christoph Hellwig --- drivers/pci/pcie/portdrv.h | 6 ++---- drivers/pci/pcie/portdrv_acpi.c | 2 +- drivers/pci/pcie/portdrv_core.c | 14 ++++---------- 3 files changed, 7 insertions(+), 15 deletions(-) diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index 7086086e45d0..7bfd75f9197b 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -19,12 +19,10 @@ #define PCIE_PORT_SERVICE_AER (1 << PCIE_PORT_SERVICE_AER_SHIFT) #define PCIE_PORT_SERVICE_HP_SHIFT 2 /* Native Hotplug */ #define PCIE_PORT_SERVICE_HP (1 << PCIE_PORT_SERVICE_HP_SHIFT) -#define PCIE_PORT_SERVICE_VC_SHIFT 3 /* Virtual Channel */ -#define PCIE_PORT_SERVICE_VC (1 << PCIE_PORT_SERVICE_VC_SHIFT) -#define PCIE_PORT_SERVICE_DPC_SHIFT 4 /* Downstream Port Containment */ +#define PCIE_PORT_SERVICE_DPC_SHIFT 3 /* Downstream Port Containment */ #define PCIE_PORT_SERVICE_DPC (1 << PCIE_PORT_SERVICE_DPC_SHIFT) -#define PCIE_PORT_DEVICE_MAXSERVICES 5 +#define PCIE_PORT_DEVICE_MAXSERVICES 4 /* Port Type */ #define PCIE_ANY_PORT (~0) diff --git a/drivers/pci/pcie/portdrv_acpi.c b/drivers/pci/pcie/portdrv_acpi.c index 53f60053bd47..9d12650dc2ae 100644 --- a/drivers/pci/pcie/portdrv_acpi.c +++ b/drivers/pci/pcie/portdrv_acpi.c @@ -47,7 +47,7 @@ void pcie_port_acpi_setup(struct pci_dev *port, int *srv_mask) flags = root->osc_control_set; - *srv_mask = PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_DPC; + *srv_mask = PCIE_PORT_SERVICE_DPC; if (flags & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL) *srv_mask |= PCIE_PORT_SERVICE_HP; if (flags & OSC_PCI_EXPRESS_PME_CONTROL) diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 9a41751db332..bf851da97947 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -188,10 +188,8 @@ static int pcie_init_service_irqs(struct pci_dev *dev, int *irqs, int mask) if (ret < 0) return -ENODEV; - for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) { - if (i != PCIE_PORT_SERVICE_VC_SHIFT) - irqs[i] = pci_irq_vector(dev, 0); - } + for (i = 0; i < PCIE_PORT_DEVICE_MAXSERVICES; i++) + irqs[i] = pci_irq_vector(dev, 0); return 0; } @@ -211,8 +209,7 @@ static int get_port_device_capability(struct pci_dev *dev) int services = 0; int cap_mask = 0; - cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP - | PCIE_PORT_SERVICE_VC; + cap_mask = PCIE_PORT_SERVICE_PME | PCIE_PORT_SERVICE_HP; if (pci_aer_available()) cap_mask |= PCIE_PORT_SERVICE_AER | PCIE_PORT_SERVICE_DPC; @@ -239,9 +236,6 @@ static int get_port_device_capability(struct pci_dev *dev) */ pci_disable_pcie_error_reporting(dev); } - /* VC support */ - if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_VC)) - services |= PCIE_PORT_SERVICE_VC; /* Root ports are capable of generating PME too */ if ((cap_mask & PCIE_PORT_SERVICE_PME) && pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) { @@ -331,7 +325,7 @@ int pcie_port_device_register(struct pci_dev *dev) */ status = pcie_init_service_irqs(dev, irqs, capabilities); if (status) { - capabilities &= PCIE_PORT_SERVICE_VC | PCIE_PORT_SERVICE_HP; + capabilities &= PCIE_PORT_SERVICE_HP; if (!capabilities) goto error_disable; }