From patchwork Mon Mar 20 13:16:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 13181204 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 A7942C761AF for ; Mon, 20 Mar 2023 13:16:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231674AbjCTNQQ (ORCPT ); Mon, 20 Mar 2023 09:16:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231640AbjCTNQN (ORCPT ); Mon, 20 Mar 2023 09:16:13 -0400 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7055119F17; Mon, 20 Mar 2023 06:16:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1679318170; x=1710854170; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=03KpgEWjTRIOrghUDlJ37yTkg0WA7G7gXnWuRYLhmBU=; b=FPbgs8bn19Luqxz+LhamuJC+ZX6wAWnZBxVMVLXxBvgJpMRcwRb3NI39 O8bQewYdMwrO9Sw3//U4+GYVu7dMdNXvnIastOTu+Icm1mK/7EnjMzFob K0c5wzvioO4U4G6zOjU00ARvaLnefKkZv39j8qASYOHXM7xn+jwhHs22k 9wWohoelspkxfA/eEjsLmAEUGEp6FBzoukux4Aw2ewVXOgzcLcmTKjUl7 wnQb/Gvt1H3MC663WBaPJD6Q8hjeZ28akHm6U+tNsR6HZDGLLFedzKgj/ 6j7LrLZ7C4/V8J0Nk+TqJb/C+58sbQtlFodsx7flyeI5TsO3MTex00wl5 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10654"; a="341015324" X-IronPort-AV: E=Sophos;i="5.98,274,1673942400"; d="scan'208";a="341015324" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Mar 2023 06:16:08 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10654"; a="824468999" X-IronPort-AV: E=Sophos;i="5.98,274,1673942400"; d="scan'208";a="824468999" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 20 Mar 2023 06:15:58 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id F13BA3DD; Mon, 20 Mar 2023 15:16:43 +0200 (EET) From: Andy Shevchenko To: =?utf-8?q?Micka=C3=ABl_Sala=C3=BCn?= , Andy Shevchenko , Mika Westerberg , =?utf-8?q?Krzysztof_Wilc?= =?utf-8?q?zy=C5=84ski?= , Michael Ellerman , Randy Dunlap , Arnd Bergmann , Niklas Schnelle , Bjorn Helgaas , "Rafael J. Wysocki" , =?utf-8?q?Pali_Roh=C3=A1r?= , "Maciej W. Rozycki" , Juergen Gross , Dominik Brodowski , linux-kernel@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org Cc: Miguel Ojeda , Richard Henderson , Ivan Kokshaysky , Matt Turner , Russell King , Andrew Lunn , Sebastian Hesselbarth , Gregory Clement , Thomas Bogendoerfer , Nicholas Piggin , Christophe Leroy , Anatolij Gustschin , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , "David S. Miller" , Bjorn Helgaas , Stefano Stabellini , Oleksandr Tyshchenko Subject: [PATCH v6 1/4] PCI: Introduce pci_dev_for_each_resource() Date: Mon, 20 Mar 2023 15:16:30 +0200 Message-Id: <20230320131633.61680-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230320131633.61680-1-andriy.shevchenko@linux.intel.com> References: <20230320131633.61680-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org From: Mika Westerberg Instead of open-coding it everywhere introduce a tiny helper that can be used to iterate over each resource of a PCI device, and convert the most obvious users into it. While at it drop doubled empty line before pdev_sort_resources(). No functional changes intended. Suggested-by: Andy Shevchenko Signed-off-by: Mika Westerberg Signed-off-by: Andy Shevchenko Reviewed-by: Krzysztof Wilczyński --- .clang-format | 2 ++ arch/alpha/kernel/pci.c | 5 ++-- arch/arm/kernel/bios32.c | 16 ++++++------- arch/arm/mach-dove/pcie.c | 10 ++++---- arch/arm/mach-mv78xx0/pcie.c | 10 ++++---- arch/arm/mach-orion5x/pci.c | 10 ++++---- arch/mips/pci/ops-bcm63xx.c | 8 +++---- arch/mips/pci/pci-legacy.c | 3 +-- arch/powerpc/kernel/pci-common.c | 21 ++++++++-------- arch/powerpc/platforms/4xx/pci.c | 8 +++---- arch/powerpc/platforms/52xx/mpc52xx_pci.c | 5 ++-- arch/powerpc/platforms/pseries/pci.c | 16 ++++++------- arch/sh/drivers/pci/pcie-sh7786.c | 10 ++++---- arch/sparc/kernel/leon_pci.c | 5 ++-- arch/sparc/kernel/pci.c | 10 ++++---- arch/sparc/kernel/pcic.c | 5 ++-- drivers/pci/remove.c | 5 ++-- drivers/pci/setup-bus.c | 27 ++++++++------------- drivers/pci/setup-res.c | 4 +--- drivers/pci/vgaarb.c | 17 ++++--------- drivers/pci/xen-pcifront.c | 4 +--- drivers/pnp/quirks.c | 29 ++++++++--------------- include/linux/pci.h | 15 ++++++++++-- 23 files changed, 111 insertions(+), 134 deletions(-) diff --git a/.clang-format b/.clang-format index d988e9fa9b26..266abb843654 100644 --- a/.clang-format +++ b/.clang-format @@ -520,6 +520,8 @@ ForEachMacros: - 'of_property_for_each_string' - 'of_property_for_each_u32' - 'pci_bus_for_each_resource' + - 'pci_dev_for_each_resource' + - 'pci_dev_for_each_resource_p' - 'pci_doe_for_each_off' - 'pcl_for_each_chunk' - 'pcl_for_each_segment' diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c index 64fbfb0763b2..4458eb7f44f0 100644 --- a/arch/alpha/kernel/pci.c +++ b/arch/alpha/kernel/pci.c @@ -288,11 +288,10 @@ pcibios_claim_one_bus(struct pci_bus *b) struct pci_bus *child_bus; list_for_each_entry(dev, &b->devices, bus_list) { + struct resource *r; int i; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *r = &dev->resource[i]; - + pci_dev_for_each_resource(dev, r, i) { if (r->parent || !r->start || !r->flags) continue; if (pci_has_flag(PCI_PROBE_ONLY) || diff --git a/arch/arm/kernel/bios32.c b/arch/arm/kernel/bios32.c index e7ef2b5bea9c..5254734b23e6 100644 --- a/arch/arm/kernel/bios32.c +++ b/arch/arm/kernel/bios32.c @@ -142,15 +142,15 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND2, PCI_DEVICE_ID_WINBOND2_89C940F, */ static void pci_fixup_dec21285(struct pci_dev *dev) { - int i; - if (dev->devfn == 0) { + struct resource *r; + dev->class &= 0xff; dev->class |= PCI_CLASS_BRIDGE_HOST << 8; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource_p(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } @@ -162,13 +162,11 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_21285, pci_fixup_d static void pci_fixup_ide_bases(struct pci_dev *dev) { struct resource *r; - int i; if ((dev->class >> 8) != PCI_CLASS_STORAGE_IDE) return; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - r = dev->resource + i; + pci_dev_for_each_resource_p(dev, r) { if ((r->start & ~0x80) == 0x374) { r->start |= 2; r->end = r->start; diff --git a/arch/arm/mach-dove/pcie.c b/arch/arm/mach-dove/pcie.c index 754ca381f600..58cecd79a204 100644 --- a/arch/arm/mach-dove/pcie.c +++ b/arch/arm/mach-dove/pcie.c @@ -142,14 +142,14 @@ static struct pci_ops pcie_ops = { static void rc_pci_fixup(struct pci_dev *dev) { if (dev->bus->parent == NULL && dev->devfn == 0) { - int i; + struct resource *r; dev->class &= 0xff; dev->class |= PCI_CLASS_BRIDGE_HOST << 8; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource_p(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } diff --git a/arch/arm/mach-mv78xx0/pcie.c b/arch/arm/mach-mv78xx0/pcie.c index 6190f538a124..f59f02150a36 100644 --- a/arch/arm/mach-mv78xx0/pcie.c +++ b/arch/arm/mach-mv78xx0/pcie.c @@ -186,14 +186,14 @@ static struct pci_ops pcie_ops = { static void rc_pci_fixup(struct pci_dev *dev) { if (dev->bus->parent == NULL && dev->devfn == 0) { - int i; + struct resource *r; dev->class &= 0xff; dev->class |= PCI_CLASS_BRIDGE_HOST << 8; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource_p(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c index 888fdc9099c5..0933b47b601a 100644 --- a/arch/arm/mach-orion5x/pci.c +++ b/arch/arm/mach-orion5x/pci.c @@ -522,14 +522,14 @@ static int __init pci_setup(struct pci_sys_data *sys) static void rc_pci_fixup(struct pci_dev *dev) { if (dev->bus->parent == NULL && dev->devfn == 0) { - int i; + struct resource *r; dev->class &= 0xff; dev->class |= PCI_CLASS_BRIDGE_HOST << 8; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource_p(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } diff --git a/arch/mips/pci/ops-bcm63xx.c b/arch/mips/pci/ops-bcm63xx.c index dc6dc2741272..c0efcbf3c63f 100644 --- a/arch/mips/pci/ops-bcm63xx.c +++ b/arch/mips/pci/ops-bcm63xx.c @@ -413,18 +413,18 @@ struct pci_ops bcm63xx_cb_ops = { static void bcm63xx_fixup(struct pci_dev *dev) { static int io_window = -1; - int i, found, new_io_window; + int found, new_io_window; + struct resource *r; u32 val; /* look for any io resource */ found = 0; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - if (pci_resource_flags(dev, i) & IORESOURCE_IO) { + pci_dev_for_each_resource_p(dev, r) { + if (resource_type(r) == IORESOURCE_IO) { found = 1; break; } } - if (!found) return; diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c index 468722c8a5c6..ec2567f8efd8 100644 --- a/arch/mips/pci/pci-legacy.c +++ b/arch/mips/pci/pci-legacy.c @@ -249,12 +249,11 @@ static int pcibios_enable_resources(struct pci_dev *dev, int mask) pci_read_config_word(dev, PCI_COMMAND, &cmd); old_cmd = cmd; - for (idx = 0; idx < PCI_NUM_RESOURCES; idx++) { + pci_dev_for_each_resource(dev, r, idx) { /* Only set up the requested stuff */ if (!(mask & (1<resource[idx]; if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) continue; if ((idx == PCI_ROM_RESOURCE) && diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index d67cf79bf5d0..1908a46cad54 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -880,6 +880,7 @@ int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge) static void pcibios_fixup_resources(struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); + struct resource *res; int i; if (!hose) { @@ -891,9 +892,9 @@ static void pcibios_fixup_resources(struct pci_dev *dev) if (dev->is_virtfn) return; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - struct resource *res = dev->resource + i; + pci_dev_for_each_resource(dev, res, i) { struct pci_bus_region reg; + if (!res->flags) continue; @@ -1452,11 +1453,10 @@ void pcibios_claim_one_bus(struct pci_bus *bus) struct pci_bus *child_bus; list_for_each_entry(dev, &bus->devices, bus_list) { + struct resource *r; int i; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *r = &dev->resource[i]; - + pci_dev_for_each_resource(dev, r, i) { if (r->parent || !r->start || !r->flags) continue; @@ -1705,19 +1705,20 @@ EXPORT_SYMBOL_GPL(pcibios_scan_phb); static void fixup_hide_host_resource_fsl(struct pci_dev *dev) { - int i, class = dev->class >> 8; + int class = dev->class >> 8; /* When configured as agent, programming interface = 1 */ int prog_if = dev->class & 0xf; + struct resource *r; if ((class == PCI_CLASS_PROCESSOR_POWERPC || class == PCI_CLASS_BRIDGE_OTHER) && (dev->hdr_type == PCI_HEADER_TYPE_NORMAL) && (prog_if == 0) && (dev->bus->parent == NULL)) { - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource_p(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } diff --git a/arch/powerpc/platforms/4xx/pci.c b/arch/powerpc/platforms/4xx/pci.c index ca5dd7a5842a..9d19123c0da8 100644 --- a/arch/powerpc/platforms/4xx/pci.c +++ b/arch/powerpc/platforms/4xx/pci.c @@ -57,7 +57,7 @@ static inline int ppc440spe_revA(void) static void fixup_ppc4xx_pci_bridge(struct pci_dev *dev) { struct pci_controller *hose; - int i; + struct resource *r; if (dev->devfn != 0 || dev->bus->self != NULL) return; @@ -79,9 +79,9 @@ static void fixup_ppc4xx_pci_bridge(struct pci_dev *dev) /* Hide the PCI host BARs from the kernel as their content doesn't * fit well in the resource management */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource_p(dev, r) { + r->start = r->end = 0; + r->flags = 0; } printk(KERN_INFO "PCI: Hiding 4xx host bridge resources %s\n", diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pci.c b/arch/powerpc/platforms/52xx/mpc52xx_pci.c index 859e2818c43d..ea72ef4fc63b 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_pci.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_pci.c @@ -327,14 +327,13 @@ mpc52xx_pci_setup(struct pci_controller *hose, static void mpc52xx_pci_fixup_resources(struct pci_dev *dev) { - int i; + struct resource *res; pr_debug("%s() %.4x:%.4x\n", __func__, dev->vendor, dev->device); /* We don't rely on boot loader for PCI and resets all devices */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - struct resource *res = &dev->resource[i]; + pci_dev_for_each_resource_p(dev, res) { if (res->end > res->start) { /* Only valid resources */ res->end -= res->start; res->start = 0; diff --git a/arch/powerpc/platforms/pseries/pci.c b/arch/powerpc/platforms/pseries/pci.c index 60e0a58928ef..ee7b2c737c92 100644 --- a/arch/powerpc/platforms/pseries/pci.c +++ b/arch/powerpc/platforms/pseries/pci.c @@ -240,7 +240,7 @@ void __init pSeries_final_fixup(void) */ static void fixup_winbond_82c105(struct pci_dev* dev) { - int i; + struct resource *r; unsigned int reg; if (!machine_is(pseries)) @@ -251,14 +251,14 @@ static void fixup_winbond_82c105(struct pci_dev* dev) /* Enable LEGIRQ to use INTC instead of ISA interrupts */ pci_write_config_dword(dev, 0x40, reg | (1<<11)); - for (i = 0; i < DEVICE_COUNT_RESOURCE; ++i) { + pci_dev_for_each_resource_p(dev, r) { /* zap the 2nd function of the winbond chip */ - if (dev->resource[i].flags & IORESOURCE_IO - && dev->bus->number == 0 && dev->devfn == 0x81) - dev->resource[i].flags &= ~IORESOURCE_IO; - if (dev->resource[i].start == 0 && dev->resource[i].end) { - dev->resource[i].flags = 0; - dev->resource[i].end = 0; + if (dev->bus->number == 0 && dev->devfn == 0x81 && + r->flags & IORESOURCE_IO) + r->flags &= ~IORESOURCE_IO; + if (r->start == 0 && r->end) { + r->flags = 0; + r->end = 0; } } } diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c index b0c2a5238d04..982f9aec2f2f 100644 --- a/arch/sh/drivers/pci/pcie-sh7786.c +++ b/arch/sh/drivers/pci/pcie-sh7786.c @@ -140,12 +140,12 @@ static void sh7786_pci_fixup(struct pci_dev *dev) * Prevent enumeration of root complex resources. */ if (pci_is_root_bus(dev->bus) && dev->devfn == 0) { - int i; + struct resource *r; - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - dev->resource[i].start = 0; - dev->resource[i].end = 0; - dev->resource[i].flags = 0; + pci_dev_for_each_resource_p(dev, r) { + r->start = 0; + r->end = 0; + r->flags = 0; } } } diff --git a/arch/sparc/kernel/leon_pci.c b/arch/sparc/kernel/leon_pci.c index e5e5ff6b9a5c..b6663a3fbae9 100644 --- a/arch/sparc/kernel/leon_pci.c +++ b/arch/sparc/kernel/leon_pci.c @@ -62,15 +62,14 @@ void leon_pci_init(struct platform_device *ofdev, struct leon_pci_info *info) int pcibios_enable_device(struct pci_dev *dev, int mask) { + struct resource *res; u16 cmd, oldcmd; int i; pci_read_config_word(dev, PCI_COMMAND, &cmd); oldcmd = cmd; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *res = &dev->resource[i]; - + pci_dev_for_each_resource(dev, res, i) { /* Only set up the requested stuff */ if (!(mask & (1<devices, bus_list) { + struct resource *r; int i; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *r = &dev->resource[i]; - + pci_dev_for_each_resource(dev, r, i) { if (r->parent || !r->start || !r->flags) continue; @@ -724,15 +723,14 @@ struct pci_bus *pci_scan_one_pbm(struct pci_pbm_info *pbm, int pcibios_enable_device(struct pci_dev *dev, int mask) { + struct resource *res; u16 cmd, oldcmd; int i; pci_read_config_word(dev, PCI_COMMAND, &cmd); oldcmd = cmd; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *res = &dev->resource[i]; - + pci_dev_for_each_resource(dev, res, i) { /* Only set up the requested stuff */ if (!(mask & (1<resource[i]; - + pci_dev_for_each_resource(dev, res, i) { /* Only set up the requested stuff */ if (!(mask & (1<resource + i; + pci_dev_for_each_resource_p(dev, res) { if (res->parent) release_resource(res); } diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index c690572b10ce..d4fc7665f70a 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -124,20 +124,17 @@ static resource_size_t get_res_add_align(struct list_head *head, return dev_res ? dev_res->min_align : 0; } - /* Sort resources by alignment */ static void pdev_sort_resources(struct pci_dev *dev, struct list_head *head) { + struct resource *r; int i; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *r; + pci_dev_for_each_resource(dev, r, i) { struct pci_dev_resource *dev_res, *tmp; resource_size_t r_align; struct list_head *n; - r = &dev->resource[i]; - if (r->flags & IORESOURCE_PCI_FIXED) continue; @@ -895,10 +892,9 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size, min_align = window_alignment(bus, IORESOURCE_IO); list_for_each_entry(dev, &bus->devices, bus_list) { - int i; + struct resource *r; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *r = &dev->resource[i]; + pci_dev_for_each_resource_p(dev, r) { unsigned long r_size; if (r->parent || !(r->flags & IORESOURCE_IO)) @@ -1014,10 +1010,10 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask, size = 0; list_for_each_entry(dev, &bus->devices, bus_list) { + struct resource *r; int i; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *r = &dev->resource[i]; + pci_dev_for_each_resource(dev, r, i) { resource_size_t r_size; if (r->parent || (r->flags & IORESOURCE_PCI_FIXED) || @@ -1358,11 +1354,10 @@ static void assign_fixed_resource_on_bus(struct pci_bus *b, struct resource *r) */ static void pdev_assign_fixed_resources(struct pci_dev *dev) { - int i; + struct resource *r; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { + pci_dev_for_each_resource_p(dev, r) { struct pci_bus *b; - struct resource *r = &dev->resource[i]; if (r->parent || !(r->flags & IORESOURCE_PCI_FIXED) || !(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) @@ -1795,11 +1790,9 @@ static void remove_dev_resources(struct pci_dev *dev, struct resource *io, struct resource *mmio, struct resource *mmio_pref) { - int i; - - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - struct resource *res = &dev->resource[i]; + struct resource *res; + pci_dev_for_each_resource_p(dev, res) { if (resource_type(res) == IORESOURCE_IO) { remove_dev_resource(io, dev, res); } else if (resource_type(res) == IORESOURCE_MEM) { diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index b492e67c3d87..967f9a758923 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -484,12 +484,10 @@ int pci_enable_resources(struct pci_dev *dev, int mask) pci_read_config_word(dev, PCI_COMMAND, &cmd); old_cmd = cmd; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { + pci_dev_for_each_resource(dev, r, i) { if (!(mask & (1 << i))) continue; - r = &dev->resource[i]; - if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) continue; if ((i == PCI_ROM_RESOURCE) && diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c index f80b6ec88dc3..3ec6a0b7dbf0 100644 --- a/drivers/pci/vgaarb.c +++ b/drivers/pci/vgaarb.c @@ -548,10 +548,8 @@ static bool vga_is_firmware_default(struct pci_dev *pdev) #if defined(CONFIG_X86) || defined(CONFIG_IA64) u64 base = screen_info.lfb_base; u64 size = screen_info.lfb_size; + struct resource *r; u64 limit; - resource_size_t start, end; - unsigned long flags; - int i; /* Select the device owning the boot framebuffer if there is one */ @@ -561,19 +559,14 @@ static bool vga_is_firmware_default(struct pci_dev *pdev) limit = base + size; /* Does firmware framebuffer belong to us? */ - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - flags = pci_resource_flags(pdev, i); - - if ((flags & IORESOURCE_MEM) == 0) + pci_dev_for_each_resource_p(pdev, r) { + if (resource_type(r) != IORESOURCE_MEM) continue; - start = pci_resource_start(pdev, i); - end = pci_resource_end(pdev, i); - - if (!start || !end) + if (!r->start || !r->end) continue; - if (base < start || limit >= end) + if (base < r->start || limit >= r->end) continue; return true; diff --git a/drivers/pci/xen-pcifront.c b/drivers/pci/xen-pcifront.c index fcd029ca2eb1..83c0ab50676d 100644 --- a/drivers/pci/xen-pcifront.c +++ b/drivers/pci/xen-pcifront.c @@ -390,9 +390,7 @@ static int pcifront_claim_resource(struct pci_dev *dev, void *data) int i; struct resource *r; - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - r = &dev->resource[i]; - + pci_dev_for_each_resource(dev, r, i) { if (!r->parent && r->start && r->flags) { dev_info(&pdev->xdev->dev, "claiming resource %s/%d\n", pci_name(dev), i); diff --git a/drivers/pnp/quirks.c b/drivers/pnp/quirks.c index ac98b9919029..6085a1471de2 100644 --- a/drivers/pnp/quirks.c +++ b/drivers/pnp/quirks.c @@ -229,8 +229,7 @@ static void quirk_ad1815_mpu_resources(struct pnp_dev *dev) static void quirk_system_pci_resources(struct pnp_dev *dev) { struct pci_dev *pdev = NULL; - struct resource *res; - resource_size_t pnp_start, pnp_end, pci_start, pci_end; + struct resource *res, *r; int i, j; /* @@ -243,32 +242,26 @@ static void quirk_system_pci_resources(struct pnp_dev *dev) * so they won't be claimed by the PNP system driver. */ for_each_pci_dev(pdev) { - for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { - unsigned long flags, type; + pci_dev_for_each_resource(pdev, r, i) { + unsigned long type = resource_type(r); - flags = pci_resource_flags(pdev, i); - type = flags & (IORESOURCE_IO | IORESOURCE_MEM); - if (!type || pci_resource_len(pdev, i) == 0) + if (!(type == IORESOURCE_IO || type == IORESOURCE_MEM) || + resource_size(r) == 0) continue; - if (flags & IORESOURCE_UNSET) + if (r->flags & IORESOURCE_UNSET) continue; - pci_start = pci_resource_start(pdev, i); - pci_end = pci_resource_end(pdev, i); for (j = 0; (res = pnp_get_resource(dev, type, j)); j++) { if (res->start == 0 && res->end == 0) continue; - pnp_start = res->start; - pnp_end = res->end; - /* * If the PNP region doesn't overlap the PCI * region at all, there's no problem. */ - if (pnp_end < pci_start || pnp_start > pci_end) + if (!resource_overlaps(res, r)) continue; /* @@ -278,8 +271,7 @@ static void quirk_system_pci_resources(struct pnp_dev *dev) * PNP device describes a bridge with PCI * behind it. */ - if (pnp_start <= pci_start && - pnp_end >= pci_end) + if (res->start <= r->start && res->end >= r->end) continue; /* @@ -288,9 +280,8 @@ static void quirk_system_pci_resources(struct pnp_dev *dev) * driver from requesting its resources. */ dev_warn(&dev->dev, - "disabling %pR because it overlaps " - "%s BAR %d %pR\n", res, - pci_name(pdev), i, &pdev->resource[i]); + "disabling %pR because it overlaps %s BAR %d %pR\n", + res, pci_name(pdev), i, r); res->flags |= IORESOURCE_DISABLED; } } diff --git a/include/linux/pci.h b/include/linux/pci.h index b50e5c79f7e3..a97f026afaed 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1995,14 +1995,25 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma); * These helpers provide future and backwards compatibility * for accessing popular PCI BAR info */ +#define pci_resource_n(dev, bar) (&(dev)->resource[(bar)]) #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) #define pci_resource_len(dev,bar) \ ((pci_resource_end((dev), (bar)) == 0) ? 0 : \ \ - (pci_resource_end((dev), (bar)) - \ - pci_resource_start((dev), (bar)) + 1)) + resource_size(pci_resource_n((dev), (bar)))) + +#define __pci_dev_for_each_resource(dev, res, __i, vartype) \ + for (vartype __i = 0; \ + res = pci_resource_n(dev, __i), __i < PCI_NUM_RESOURCES; \ + __i++) + +#define pci_dev_for_each_resource(dev, res, i) \ + __pci_dev_for_each_resource(dev, res, i, ) + +#define pci_dev_for_each_resource_p(dev, res) \ + __pci_dev_for_each_resource(dev, res, __i, unsigned int) /* * Similar to the helpers above, these manipulate per-pci_dev