From patchwork Wed Mar 7 06:13:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 10263415 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AC77760247 for ; Wed, 7 Mar 2018 06:14:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 96DC9292B8 for ; Wed, 7 Mar 2018 06:14:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 85FD8292D2; Wed, 7 Mar 2018 06:14:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1603D292B8 for ; Wed, 7 Mar 2018 06:14:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751211AbeCGGOB (ORCPT ); Wed, 7 Mar 2018 01:14:01 -0500 Received: from mail.kernel.org ([198.145.29.99]:42652 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751099AbeCGGN6 (ORCPT ); Wed, 7 Mar 2018 01:13:58 -0500 Received: from localhost (unknown [50.35.13.28]) (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 2221021797; Wed, 7 Mar 2018 06:13:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2221021797 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 v1 6/9] 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 Date: Wed, 07 Mar 2018 00:13:56 -0600 Message-ID: <152040323671.240786.17190514268346362843.stgit@bhelgaas-glaptop.roam.corp.google.com> In-Reply-To: <152040297576.240786.1532465558381209070.stgit@bhelgaas-glaptop.roam.corp.google.com> References: <152040297576.240786.1532465558381209070.stgit@bhelgaas-glaptop.roam.corp.google.com> User-Agent: StGit/0.18 MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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 --- drivers/pci/pcie/portdrv.h | 2 +- drivers/pci/pcie/portdrv_acpi.c | 2 +- drivers/pci/pcie/portdrv_core.c | 14 ++++---------- include/linux/pcieport_if.h | 4 +--- 4 files changed, 7 insertions(+), 15 deletions(-) diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index a4fc44d52206..749d200936d9 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -12,7 +12,7 @@ #include -#define PCIE_PORT_DEVICE_MAXSERVICES 5 +#define PCIE_PORT_DEVICE_MAXSERVICES 4 /* * The PCIe Capability Interrupt Message Number (PCIe r3.1, sec 7.8.2) must * be one of the first 32 MSI-X entries. Per PCI r3.0, sec 6.8.3.1, MSI diff --git a/drivers/pci/pcie/portdrv_acpi.c b/drivers/pci/pcie/portdrv_acpi.c index 319c94976873..4a1b50867c98 100644 --- a/drivers/pci/pcie/portdrv_acpi.c +++ b/drivers/pci/pcie/portdrv_acpi.c @@ -48,7 +48,7 @@ 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 9db77c683732..94ce4dc50d1a 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -189,10 +189,8 @@ 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; } @@ -212,8 +210,7 @@ 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; @@ -240,9 +237,6 @@ 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) { @@ -332,7 +326,7 @@ 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; } diff --git a/include/linux/pcieport_if.h b/include/linux/pcieport_if.h index b69769dbf659..28eb21731db6 100644 --- a/include/linux/pcieport_if.h +++ b/include/linux/pcieport_if.h @@ -20,9 +20,7 @@ #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) struct pcie_device {