From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.11]) (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 EB6C244D6AC for ; Mon, 21 Sep 2026 14:18:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790000297; cv=none; b=cGoEQMrSOGVFptxQWCCvB43nvamoj4rdJZzsiy2U3JsjnWlfNDIgy+rzsP8vgdElD5ZuVr3o6wyZfdjwBpff0zH8FujquWs5tAd1oY/T6x0dqlCuRx9yo8uHDuZ5ZGxzCcpynoP2lm7KtIzPA6eSCMNigU8BpXFy5sknxBl0Fms= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790000297; c=relaxed/simple; bh=FSP23mJTcdMJDbMsJgh43EA/viaslb6zg7j5jxWdcco=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TyKwG98KiAs4tL5gwi5Hw6X0TOAO1YiFtcZVuIjGYYr1UkS1rgrZ6Fk06WSD2dNcw4q2gSSDYu8LCPAMoFHmG6fpq0UIpKP0/ULpbjpyuYDjdai/KZys0snVmRAH9FIRHRrseCufYqRE65lnXgw1kGUuRn6ntCfH2ctob+tG9x4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=brQcHkdH; arc=none smtp.client-ip=192.198.163.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="brQcHkdH" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1790000296; x=1821536296; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=FSP23mJTcdMJDbMsJgh43EA/viaslb6zg7j5jxWdcco=; b=brQcHkdH3VlcHqfYGbeI4gsjBUMzC0h/RtMbjiQhtwzcdYK52SRep2kM Svlgj9ZutFhBuuA26wc13fVs8ZWpyZv6eI13mjdirS6yx6AW8QEoHY5ER 9uDz1TQuQ56+Ervb87XyWH9sqD6BSgulTgSAZAN2l7tOoPq2NI4RVuciZ gUJrKXp1DvsN+ba4gn9rCaFPL5rh6Cn4Hm7X6nvzoejPhBwmy62E0LuPt 5OtVbcjttpztnfsVFsMUzJxYElGStA9MqQ3xhMyp68dARHPQjQE/9v/2h 1gjodfzCBba+pw6rI21HpIxP2sYaR8GZjMAe2fSinIbglLRcmlvAMD7uM Q==; X-CSE-ConnectionGUID: EQTxvN88R86O/s1tLVYg3A== X-CSE-MsgGUID: yQaIeHRnT36nJP3rN7mpSw== X-IronPort-AV: E=McAfee;i="6800,10657,11912"; a="101108366" X-IronPort-AV: E=Sophos;i="6.27,114,1787036400"; d="scan'208";a="101108366" Received: from fmviesa012.fm.intel.com ([10.60.135.152]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2026 07:18:15 -0700 X-CSE-ConnectionGUID: wfGngwm4S/+/nUB6diy2eg== X-CSE-MsgGUID: qFvrKM/QRl2948b4YBZMyg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,114,1787036400"; d="scan'208";a="3654390" Received: from ubuntu.igk.intel.com ([10.102.114.174]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2026 07:18:14 -0700 From: Szymon Durawa To: helgaas@kernel.org, nirmal.patel@linux.intel.com, szymon.durawa@linux.intel.com, djbw@kernel.org, linux-pci@vger.kernel.org, lukas@wunner.de Subject: [PATCH v8 5/8] PCI: vmd: Replace hardcoded values with enum and defines Date: Mon, 21 Sep 2026 16:43:11 +0000 Message-ID: <20260921164316.3860312-6-szymon.durawa@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260921164316.3860312-1-szymon.durawa@linux.intel.com> References: <20260921164316.3860312-1-szymon.durawa@linux.intel.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add enum vmd_resource type to replace hardcoded values. Add defines for vmd bus start number based on VMD restriction value. No functional changes. Suggested-by: Nirmal Patel Signed-off-by: Szymon Durawa --- drivers/pci/controller/vmd.c | 45 ++++++++++++++++++++++++------------ 1 file changed, 30 insertions(+), 15 deletions(-) diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c index 8b59b369f126..b7c4e22deee5 100644 --- a/drivers/pci/controller/vmd.c +++ b/drivers/pci/controller/vmd.c @@ -26,6 +26,11 @@ #define VMD_MEMBAR1 2 #define VMD_MEMBAR2 4 +/* VMD restriction value determines secondary start bus number */ +#define VMD_RESTRICT_0_BUS_START 0x0 +#define VMD_RESTRICT_1_BUS_START 0x80 +#define VMD_RESTRICT_2_BUS_START 0xE0 + #define PCI_REG_VMCAP 0x40 #define BUS_RESTRICT_CAP(vmcap) (vmcap & 0x1) #define PCI_REG_VMCONFIG 0x44 @@ -43,6 +48,13 @@ #define BASE_ID_REG_28C1 0x2840 #define MEMBAR2_OFFSET_28C1 0x30d0 +enum vmd_resource { + VMD_RES_CFGBAR = 0, /* VMD Bus0 Config BAR */ + VMD_RES_MBAR_1, /* VMD Bus0 Resource MemBAR 1 */ + VMD_RES_MBAR_2, /* VMD Bus0 Resource MemBAR 2 */ + VMD_RES_COUNT +}; + enum vmd_features { /* * Device may contain registers which hint the physical location of the @@ -150,7 +162,7 @@ struct vmd_dev { struct vmd_irq_list *irqs; struct pci_sysdata sysdata; - struct resource resources[3]; + struct resource resources[VMD_RES_COUNT]; struct irq_domain *irq_domain; struct pci_bus *bus; u8 busn_start; @@ -562,7 +574,7 @@ static resource_size_t vmd_cfgbar_ecam_space(struct vmd_dev *vmd) } static void vmd_domain_reset(struct vmd_dev *vmd) { - u16 bus, max_buses = resource_size(&vmd->resources[0]); + u16 bus, max_buses = resource_size(&vmd->resources[VMD_RES_CFGBAR]); u8 dev, functions, fn, hdr_type; unsigned int ecam_bus; char __iomem *base; @@ -613,8 +625,8 @@ static void vmd_domain_reset(struct vmd_dev *vmd) static void vmd_attach_resources(struct vmd_dev *vmd) { - vmd->dev->resource[VMD_MEMBAR1].child = &vmd->resources[1]; - vmd->dev->resource[VMD_MEMBAR2].child = &vmd->resources[2]; + vmd->dev->resource[VMD_MEMBAR1].child = &vmd->resources[VMD_RES_MBAR_1]; + vmd->dev->resource[VMD_MEMBAR2].child = &vmd->resources[VMD_RES_MBAR_2]; } static void vmd_detach_resources(struct vmd_dev *vmd) @@ -690,14 +702,14 @@ static int vmd_get_bus_number_start(struct vmd_dev *vmd) switch (BUS_RESTRICT_CFG(reg)) { case 0: - vmd->busn_start = 0; + vmd->busn_start = VMD_RESTRICT_0_BUS_START; break; case 1: - vmd->busn_start = 128; + vmd->busn_start = VMD_RESTRICT_1_BUS_START; break; case 3: case 2: - vmd->busn_start = 224; + vmd->busn_start = VMD_RESTRICT_2_BUS_START; break; default: pci_err(dev, "Unknown Bus Offset Setting (%d)\n", @@ -913,7 +925,7 @@ static void vmd_configure_cfgbar(struct vmd_dev *vmd) /* Do not let resource[0] end go out of bound.*/ busn_end = vmd->busn_start + (resource_size(res) >> 20) - 1; busn_end = min_t(resource_size_t, busn_end, 0xff); - vmd->resources[0] = (struct resource) { + vmd->resources[VMD_RES_CFGBAR] = (struct resource) { .name = "VMD CFGBAR", .start = vmd->busn_start, .end = busn_end, @@ -970,14 +982,15 @@ static int vmd_configure_membar1_membar2(struct vmd_dev *vmd, { int ret; - ret = vmd_configure_membar(vmd, 1, VMD_MEMBAR1, 0, 0); + ret = vmd_configure_membar(vmd, VMD_RES_MBAR_1, VMD_MEMBAR1, 0, 0); if (ret) return ret; - ret = vmd_configure_membar(vmd, 2, VMD_MEMBAR2, mbar2_ofs, 0); + ret = vmd_configure_membar(vmd, VMD_RES_MBAR_2, VMD_MEMBAR2, mbar2_ofs, 0); if (ret) { - devm_kfree(&vmd->dev->dev, (void *)vmd->resources[1].name); - memset(&vmd->resources[1], 0, sizeof(vmd->resources[1])); + devm_kfree(&vmd->dev->dev, (void *)vmd->resources[VMD_RES_MBAR_1].name); + memset(&vmd->resources[VMD_RES_MBAR_1], 0, + sizeof(vmd->resources[VMD_RES_MBAR_1])); return ret; } @@ -989,9 +1002,11 @@ static int vmd_create_bus(struct vmd_dev *vmd, struct pci_sysdata *sd, { LIST_HEAD(resources); - pci_add_resource(&resources, &vmd->resources[0]); - pci_add_resource_offset(&resources, &vmd->resources[1], offset[0]); - pci_add_resource_offset(&resources, &vmd->resources[2], offset[1]); + pci_add_resource(&resources, &vmd->resources[VMD_RES_CFGBAR]); + pci_add_resource_offset(&resources, &vmd->resources[VMD_RES_MBAR_1], + offset[0]); + pci_add_resource_offset(&resources, &vmd->resources[VMD_RES_MBAR_2], + offset[1]); vmd->bus = pci_create_root_bus(&vmd->dev->dev, vmd->busn_start, &vmd_ops, sd, &resources); -- 2.43.0