From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6105EC433EF for ; Mon, 14 Feb 2022 11:45:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243847AbiBNLqD (ORCPT ); Mon, 14 Feb 2022 06:46:03 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:46272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352596AbiBNLpV (ORCPT ); Mon, 14 Feb 2022 06:45:21 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AADBDBC04; Mon, 14 Feb 2022 03:42:28 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 387DD6122C; Mon, 14 Feb 2022 11:42:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 502B6C340E9; Mon, 14 Feb 2022 11:42:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1644838947; bh=BAX5QKSkNzu3GCePfgK1DGgQaGnWdjerZdEEaYRvmkQ=; h=From:To:Cc:Subject:Date:From; b=roHTB6fm6FZtAB5p/X2IVdo1aU+VVcsdAcDlpiPPW6+9xhH8ZHGnyQ7vOXxIEdQgY 1urLgs1l6YauMrtD1IVMCXQd+TxZX8DHIPFDNp92ZGo5IXAZi8iwK7khg6KGjAVtBJ p3pZDlPk4vBJsEEQU503V0gk1y8G6yVJvWCHfS8/a1SACC28R8+WzRtcEha2Dcu6yV BJLwYqFBKPDuSFDc3ZiCL3ZnO0CxoJ9ErkJiZOcpG9apX1hK3pdCncOTRwudD4JCMP MRaG+JLnEkZxACk9xOkaKg15vYmkiH69Skt8YmW+mOxw1EEC4B1hEY6tmUTtSXrOO9 KsgrKUW6NpO3Q== Received: by pali.im (Postfix) id C7EE5CAA; Mon, 14 Feb 2022 12:42:24 +0100 (CET) From: =?UTF-8?q?Pali=20Roh=C3=A1r?= To: Bjorn Helgaas , Lorenzo Pieralisi , Rob Herring , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Ray Jui , Scott Branden Cc: bcm-kernel-feedback-list@broadcom.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [RESEND PATCH v2 1/2] PCI: Add defines for normal and subtractive PCI bridges Date: Mon, 14 Feb 2022 12:41:08 +0100 Message-Id: <20220214114109.26809-1-pali@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add following two new PCI class codes defines into pci_ids.h include file: PCI_CLASS_BRIDGE_PCI_NORMAL PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE And use these defines in all kernel code for describing PCI class codes for normal and subtractive PCI bridges. Signed-off-by: Pali Rohár --- Changes in v2: - rebased on on top of pci/next branch - dropped pcie-iproc.c change for 0x43c register for now (layout of this register is unknown and later I should get more information from Broadcom about it) --- .../mips/include/asm/mach-bcm63xx/bcm63xx_regs.h | 2 -- arch/mips/pci/fixup-sb1250.c | 2 +- arch/mips/pci/pci-bcm63xx.c | 2 +- arch/powerpc/platforms/powernv/pci.c | 2 +- arch/powerpc/sysdev/fsl_pci.c | 2 +- arch/sh/drivers/pci/pcie-sh7786.c | 2 +- drivers/pci/controller/dwc/pci-keystone.c | 8 ++++---- drivers/pci/controller/dwc/pci-meson.c | 16 ++++++++-------- drivers/pci/controller/dwc/pcie-qcom.c | 2 +- .../pci/controller/mobiveil/pcie-mobiveil-host.c | 2 +- drivers/pci/controller/pci-aardvark.c | 2 +- drivers/pci/controller/pci-loongson.c | 2 +- drivers/pci/controller/pci-tegra.c | 2 +- drivers/pci/controller/pcie-iproc-bcma.c | 2 +- drivers/pci/controller/pcie-iproc.c | 2 +- drivers/pci/controller/pcie-mediatek-gen3.c | 2 +- drivers/pci/controller/pcie-rcar-host.c | 2 +- drivers/pci/controller/pcie-rockchip-host.c | 2 +- drivers/pci/controller/pcie-rockchip.h | 1 - drivers/pci/hotplug/shpchp_core.c | 2 +- drivers/pci/pci-bridge-emul.c | 4 ++-- drivers/pci/pcie/portdrv_pci.c | 4 ++-- include/linux/pci_ids.h | 2 ++ 23 files changed, 34 insertions(+), 35 deletions(-) diff --git a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h index 9ceb5e72889f..d3f397dcab6e 100644 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h @@ -1380,8 +1380,6 @@ #define PCIE_IDVAL3_REG 0x43c #define IDVAL3_CLASS_CODE_MASK 0xffffff -#define IDVAL3_SUBCLASS_SHIFT 8 -#define IDVAL3_CLASS_SHIFT 16 #define PCIE_DLSTATUS_REG 0x1048 #define DLSTATUS_PHYLINKUP (1 << 13) diff --git a/arch/mips/pci/fixup-sb1250.c b/arch/mips/pci/fixup-sb1250.c index 40efc990cdce..3f914c33b7de 100644 --- a/arch/mips/pci/fixup-sb1250.c +++ b/arch/mips/pci/fixup-sb1250.c @@ -75,7 +75,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_PCI, */ static void quirk_sb1250_ht(struct pci_dev *dev) { - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_HT, quirk_sb1250_ht); diff --git a/arch/mips/pci/pci-bcm63xx.c b/arch/mips/pci/pci-bcm63xx.c index 5548365605c0..ac83243772d2 100644 --- a/arch/mips/pci/pci-bcm63xx.c +++ b/arch/mips/pci/pci-bcm63xx.c @@ -186,7 +186,7 @@ static int __init bcm63xx_register_pcie(void) /* setup class code as bridge */ val = bcm_pcie_readl(PCIE_IDVAL3_REG); val &= ~IDVAL3_CLASS_CODE_MASK; - val |= (PCI_CLASS_BRIDGE_PCI << IDVAL3_SUBCLASS_SHIFT); + val |= PCI_CLASS_BRIDGE_PCI_NORMAL; bcm_pcie_writel(val, PCIE_IDVAL3_REG); /* disable bar1 size */ diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c index 9a8391b983d1..f7054879ecd4 100644 --- a/arch/powerpc/platforms/powernv/pci.c +++ b/arch/powerpc/platforms/powernv/pci.c @@ -815,7 +815,7 @@ void pnv_pci_shutdown(void) /* Fixup wrong class code in p7ioc and p8 root complex */ static void pnv_p7ioc_rc_quirk(struct pci_dev *dev) { - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_IBM, 0x3b9, pnv_p7ioc_rc_quirk); diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 674f047b7820..a97ce602394e 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -55,7 +55,7 @@ static void quirk_fsl_pcie_early(struct pci_dev *dev) if ((hdr_type & 0x7f) != PCI_HEADER_TYPE_BRIDGE) return; - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; fsl_pcie_bus_fixup = 1; return; } diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c index 4d499476c33a..b0c2a5238d04 100644 --- a/arch/sh/drivers/pci/pcie-sh7786.c +++ b/arch/sh/drivers/pci/pcie-sh7786.c @@ -314,7 +314,7 @@ static int __init pcie_init(struct sh7786_pcie_port *port) * class to match. Hardware takes care of propagating the IDSETR * settings, so there is no need to bother with a quirk. */ - pci_write_reg(chan, PCI_CLASS_BRIDGE_PCI << 16, SH4A_PCIEIDSETR1); + pci_write_reg(chan, PCI_CLASS_BRIDGE_PCI_NORMAL << 8, SH4A_PCIEIDSETR1); /* Initialize default capabilities. */ data = pci_read_reg(chan, SH4A_PCIEEXPCAP0); diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 1c2ee4e13f1c..d10e5fd0f83c 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -531,13 +531,13 @@ static void ks_pcie_quirk(struct pci_dev *dev) struct pci_dev *bridge; static const struct pci_device_id rc_pci_devids[] = { { PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2HK), - .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, }, + .class = PCI_CLASS_BRIDGE_PCI_NORMAL, .class_mask = ~0, }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2E), - .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, }, + .class = PCI_CLASS_BRIDGE_PCI_NORMAL, .class_mask = ~0, }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2L), - .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, }, + .class = PCI_CLASS_BRIDGE_PCI_NORMAL, .class_mask = ~0, }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2G), - .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, }, + .class = PCI_CLASS_BRIDGE_PCI_NORMAL, .class_mask = ~0, }, { 0, }, }; diff --git a/drivers/pci/controller/dwc/pci-meson.c b/drivers/pci/controller/dwc/pci-meson.c index 686ded034f22..f44bf347904a 100644 --- a/drivers/pci/controller/dwc/pci-meson.c +++ b/drivers/pci/controller/dwc/pci-meson.c @@ -313,14 +313,14 @@ static int meson_pcie_rd_own_conf(struct pci_bus *bus, u32 devfn, * cannot program the PCI_CLASS_DEVICE register, so we must fabricate * the return value in the config accessors. */ - if (where == PCI_CLASS_REVISION && size == 4) - *val = (PCI_CLASS_BRIDGE_PCI << 16) | (*val & 0xffff); - else if (where == PCI_CLASS_DEVICE && size == 2) - *val = PCI_CLASS_BRIDGE_PCI; - else if (where == PCI_CLASS_DEVICE && size == 1) - *val = PCI_CLASS_BRIDGE_PCI & 0xff; - else if (where == PCI_CLASS_DEVICE + 1 && size == 1) - *val = (PCI_CLASS_BRIDGE_PCI >> 8) & 0xff; + if ((where & ~3) == PCI_CLASS_REVISION) { + if (size <= 2) + *val = (*val & ((1 << (size * 8)) - 1)) << (8 * (where & 3)); + *val &= ~0xffffff00; + *val |= PCI_CLASS_BRIDGE_PCI_NORMAL << 8; + if (size <= 2) + *val = (*val >> (8 * (where & 3))) & ((1 << (size * 8)) - 1); + } return PCIBIOS_SUCCESSFUL; } diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index c19cd506ed3f..a47f1c0434c2 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -1634,7 +1634,7 @@ static const struct of_device_id qcom_pcie_match[] = { static void qcom_fixup_class(struct pci_dev *dev) { - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0101, qcom_fixup_class); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, 0x0104, qcom_fixup_class); diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c index f3547aa60140..31a7bdebe540 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-host.c @@ -295,7 +295,7 @@ int mobiveil_host_init(struct mobiveil_pcie *pcie, bool reinit) /* fixup for PCIe class register */ value = mobiveil_csr_readl(pcie, PAB_INTP_AXI_PIO_CLASS); value &= 0xff; - value |= (PCI_CLASS_BRIDGE_PCI << 16); + value |= PCI_CLASS_BRIDGE_PCI_NORMAL << 8; mobiveil_csr_writel(pcie, value, PAB_INTP_AXI_PIO_CLASS); return 0; diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index 4f5b44827d21..2561326e9181 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -529,7 +529,7 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie) */ reg = advk_readl(pcie, PCIE_CORE_DEV_REV_REG); reg &= ~0xffffff00; - reg |= (PCI_CLASS_BRIDGE_PCI << 8) << 8; + reg |= PCI_CLASS_BRIDGE_PCI_NORMAL << 8; advk_writel(pcie, reg, PCIE_CORE_DEV_REV_REG); /* Disable Root Bridge I/O space, memory space and bus mastering */ diff --git a/drivers/pci/controller/pci-loongson.c b/drivers/pci/controller/pci-loongson.c index 48169b1e3817..50a8e1d6f70a 100644 --- a/drivers/pci/controller/pci-loongson.c +++ b/drivers/pci/controller/pci-loongson.c @@ -35,7 +35,7 @@ struct loongson_pci { /* Fixup wrong class code in PCIe bridges */ static void bridge_class_quirk(struct pci_dev *dev) { - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_LOONGSON, DEV_PCIE_PORT_0, bridge_class_quirk); diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c index cb0aa65d6934..0457ec02ab70 100644 --- a/drivers/pci/controller/pci-tegra.c +++ b/drivers/pci/controller/pci-tegra.c @@ -726,7 +726,7 @@ static void tegra_pcie_port_free(struct tegra_pcie_port *port) /* Tegra PCIE root complex wrongly reports device class */ static void tegra_pcie_fixup_class(struct pci_dev *dev) { - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0, tegra_pcie_fixup_class); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1, tegra_pcie_fixup_class); diff --git a/drivers/pci/controller/pcie-iproc-bcma.c b/drivers/pci/controller/pcie-iproc-bcma.c index 54b6e6d5bc64..99a99900444d 100644 --- a/drivers/pci/controller/pcie-iproc-bcma.c +++ b/drivers/pci/controller/pcie-iproc-bcma.c @@ -18,7 +18,7 @@ /* NS: CLASS field is R/O, and set to wrong 0x200 value */ static void bcma_pcie2_fixup_class(struct pci_dev *dev) { - dev->class = PCI_CLASS_BRIDGE_PCI << 8; + dev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8011, bcma_pcie2_fixup_class); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x8012, bcma_pcie2_fixup_class); diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c index b3e75bc61ff1..3df4ab209253 100644 --- a/drivers/pci/controller/pcie-iproc.c +++ b/drivers/pci/controller/pcie-iproc.c @@ -1581,7 +1581,7 @@ static void quirk_paxc_bridge(struct pci_dev *pdev) * code that the bridge is not an Ethernet device. */ if (pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE) - pdev->class = PCI_CLASS_BRIDGE_PCI << 8; + pdev->class = PCI_CLASS_BRIDGE_PCI_NORMAL; /* * MPSS is not being set properly (as it is currently 0). This is diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index 7705d61fba4c..3e8d70bfabc6 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -292,7 +292,7 @@ static int mtk_pcie_startup_port(struct mtk_gen3_pcie *pcie) /* Set class code */ val = readl_relaxed(pcie->base + PCIE_PCI_IDS_1); val &= ~GENMASK(31, 8); - val |= PCI_CLASS(PCI_CLASS_BRIDGE_PCI << 8); + val |= PCI_CLASS(PCI_CLASS_BRIDGE_PCI_NORMAL); writel_relaxed(val, pcie->base + PCIE_PCI_IDS_1); /* Mask all INTx interrupts */ diff --git a/drivers/pci/controller/pcie-rcar-host.c b/drivers/pci/controller/pcie-rcar-host.c index 38b6e02edfa9..dfca59c4ae34 100644 --- a/drivers/pci/controller/pcie-rcar-host.c +++ b/drivers/pci/controller/pcie-rcar-host.c @@ -370,7 +370,7 @@ static int rcar_pcie_hw_init(struct rcar_pcie *pcie) * class to match. Hardware takes care of propagating the IDSETR * settings, so there is no need to bother with a quirk. */ - rcar_pci_write_reg(pcie, PCI_CLASS_BRIDGE_PCI << 16, IDSETR1); + rcar_pci_write_reg(pcie, PCI_CLASS_BRIDGE_PCI_NORMAL << 8, IDSETR1); /* * Setup Secondary Bus Number & Subordinate Bus Number, even though diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 45a28880f322..7f56f99b4116 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -370,7 +370,7 @@ static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) rockchip_pcie_write(rockchip, ROCKCHIP_VENDOR_ID, PCIE_CORE_CONFIG_VENDOR); rockchip_pcie_write(rockchip, - PCI_CLASS_BRIDGE_PCI << PCIE_RC_CONFIG_SCC_SHIFT, + PCI_CLASS_BRIDGE_PCI_NORMAL << 8, PCIE_RC_CONFIG_RID_CCR); /* Clear THP cap's next cap pointer to remove L1 substate cap */ diff --git a/drivers/pci/controller/pcie-rockchip.h b/drivers/pci/controller/pcie-rockchip.h index 1650a5087450..32c3a859c26b 100644 --- a/drivers/pci/controller/pcie-rockchip.h +++ b/drivers/pci/controller/pcie-rockchip.h @@ -134,7 +134,6 @@ #define PCIE_RC_CONFIG_NORMAL_BASE 0x800000 #define PCIE_RC_CONFIG_BASE 0xa00000 #define PCIE_RC_CONFIG_RID_CCR (PCIE_RC_CONFIG_BASE + 0x08) -#define PCIE_RC_CONFIG_SCC_SHIFT 16 #define PCIE_RC_CONFIG_DCR (PCIE_RC_CONFIG_BASE + 0xc4) #define PCIE_RC_CONFIG_DCR_CSPL_SHIFT 18 #define PCIE_RC_CONFIG_DCR_CSPL_LIMIT 0xff diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c index 81a918d47895..53692b048301 100644 --- a/drivers/pci/hotplug/shpchp_core.c +++ b/drivers/pci/hotplug/shpchp_core.c @@ -312,7 +312,7 @@ static void shpc_remove(struct pci_dev *dev) } static const struct pci_device_id shpcd_pci_tbl[] = { - {PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0)}, + {PCI_DEVICE_CLASS(PCI_CLASS_BRIDGE_PCI_NORMAL, ~0)}, { /* end: all zeroes */ } }; MODULE_DEVICE_TABLE(pci, shpcd_pci_tbl); diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c index c994ebec2360..cf9d90ec2968 100644 --- a/drivers/pci/pci-bridge-emul.c +++ b/drivers/pci/pci-bridge-emul.c @@ -329,9 +329,9 @@ int pci_bridge_emul_init(struct pci_bridge_emul *bridge, /* * class_revision: Class is high 24 bits and revision is low 8 bit of this member, - * while class for PCI Bridge Normal Decode has the 24-bit value: PCI_CLASS_BRIDGE_PCI << 8 + * while class for PCI Bridge Normal Decode has the 24-bit value: PCI_CLASS_BRIDGE_PCI_NORMAL */ - bridge->conf.class_revision |= cpu_to_le32((PCI_CLASS_BRIDGE_PCI << 8) << 8); + bridge->conf.class_revision |= cpu_to_le32(PCI_CLASS_BRIDGE_PCI_NORMAL << 8); bridge->conf.header_type = PCI_HEADER_TYPE_BRIDGE; bridge->conf.cache_line_size = 0x10; bridge->conf.status = cpu_to_le16(PCI_STATUS_CAP_LIST); diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 35eca6277a96..4b8801656ffb 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -178,9 +178,9 @@ static pci_ers_result_t pcie_portdrv_mmio_enabled(struct pci_dev *dev) */ static const struct pci_device_id port_pci_ids[] = { /* handle any PCI-Express port */ - { PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x00), ~0) }, + { PCI_DEVICE_CLASS(PCI_CLASS_BRIDGE_PCI_NORMAL, ~0) }, /* subtractive decode PCI-to-PCI bridge, class type is 060401h */ - { PCI_DEVICE_CLASS(((PCI_CLASS_BRIDGE_PCI << 8) | 0x01), ~0) }, + { PCI_DEVICE_CLASS(PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE, ~0) }, /* handle any Root Complex Event Collector */ { PCI_DEVICE_CLASS(((PCI_CLASS_SYSTEM_RCEC << 8) | 0x00), ~0) }, { }, diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index aad54c666407..130949c3b486 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -60,6 +60,8 @@ #define PCI_CLASS_BRIDGE_EISA 0x0602 #define PCI_CLASS_BRIDGE_MC 0x0603 #define PCI_CLASS_BRIDGE_PCI 0x0604 +#define PCI_CLASS_BRIDGE_PCI_NORMAL 0x060400 +#define PCI_CLASS_BRIDGE_PCI_SUBTRACTIVE 0x060401 #define PCI_CLASS_BRIDGE_PCMCIA 0x0605 #define PCI_CLASS_BRIDGE_NUBUS 0x0606 #define PCI_CLASS_BRIDGE_CARDBUS 0x0607 -- 2.20.1