[v8,59/61] PCI: Introduce resource_disabled()

Message ID	1445979353-1728-60-git-send-email-yinghai@kernel.org (mailing list archive)
State	New, archived
Delegated to:	Bjorn Helgaas
Headers	show Return-Path: <linux-pci-owner@kernel.org> From: Yinghai Lu <yinghai@kernel.org> To: Bjorn Helgaas <bhelgaas@google.com>, David Miller <davem@davemloft.net>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Wei Yang <weiyang@linux.vnet.ibm.com>, TJ <linux@iam.tj>, Yijing Wang <wangyijing@huawei.com>, Khalid Aziz <khalid.aziz@oracle.com> Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu <yinghai@kernel.org>, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-am33-list@redhat.com, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linux-xtensa@linux-xtensa.org, iommu@lists.linux-foundation.org, linux-sh@vger.kernel.org Subject: [PATCH v8 59/61] PCI: Introduce resource_disabled() Date: Tue, 27 Oct 2015 13:55:51 -0700 Message-Id: <1445979353-1728-60-git-send-email-yinghai@kernel.org> In-Reply-To: <1445979353-1728-1-git-send-email-yinghai@kernel.org> References: <1445979353-1728-1-git-send-email-yinghai@kernel.org> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c index 5f387ee..c89c8ef 100644 --- a/arch/alpha/kernel/pci.c +++ b/arch/alpha/kernel/pci.c @@ -282,7 +282,7 @@ pcibios_claim_one_bus(struct pci_bus *b) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; if (pci_has_flag(PCI_PROBE_ONLY) || (r->flags & IORESOURCE_PCI_FIXED)) { diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c index 7cc3be9..cc293ea 100644 --- a/arch/ia64/pci/pci.c +++ b/arch/ia64/pci/pci.c @@ -501,7 +501,7 @@ void pcibios_fixup_device_resources(struct pci_dev *dev) for (idx = 0; idx < PCI_BRIDGE_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_resource(dev, idx); @@ -519,7 +519,7 @@ static void pcibios_fixup_bridge_resources(struct pci_dev *dev) for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_bridge_resource(dev, idx); diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c index 09b1af6..c123d3c 100644 --- a/arch/microblaze/pci/pci-common.c +++ b/arch/microblaze/pci/pci-common.c @@ -705,7 +705,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev) } for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { struct resource *res = dev->resource + i; - if (!res->flags) + if (resource_disabled(res)) continue; if (res->start == 0) { pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]", @@ -806,7 +806,7 @@ static void pcibios_fixup_bridge(struct pci_bus *bus) pci_bus_for_each_resource(bus, res, i) { if (!res) continue; - if (!res->flags) + if (resource_disabled(res)) continue; if (i >= 3 && bus->self->transparent) continue; @@ -985,7 +985,7 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus) pci_domain_nr(bus), bus->number); pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->flags + if (!res || resource_disabled(res) || res->start > res->end || res->parent) continue; if (bus->parent == NULL) @@ -1087,7 +1087,8 @@ static void __init pcibios_allocate_resources(int pass) r = &dev->resource[idx]; if (r->parent) /* Already allocated */ continue; - if (!r->flags || (r->flags & IORESOURCE_UNSET)) + if (resource_disabled(r) || + (r->flags & IORESOURCE_UNSET)) continue; /* Not assigned at all */ /* We only allocate ROMs on pass 1 just in case they * have been screwed up by firmware @@ -1218,7 +1219,7 @@ void pcibios_claim_one_bus(struct pci_bus *bus) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; pr_debug("PCI: Claiming %s: ", pci_name(dev)); @@ -1278,7 +1279,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, res->start = (res->start + io_offset) & 0xffffffffu; res->end = (res->end + io_offset) & 0xffffffffu; - if (!res->flags) { + if (resource_disabled(res)) { pr_warn("PCI: I/O resource not set for host "); pr_cont("bridge %s (domain %d)\n", hose->dn->full_name, hose->global_number); @@ -1298,7 +1299,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, /* Hookup PHB Memory resources */ for (i = 0; i < 3; ++i) { res = &hose->mem_resources[i]; - if (!res->flags) { + if (resource_disabled(res)) { if (i > 0) continue; pr_err("PCI: Memory resource 0 not set for "); diff --git a/arch/mn10300/unit-asb2305/pci-asb2305.c b/arch/mn10300/unit-asb2305/pci-asb2305.c index b7ab837..7e70e51 100644 --- a/arch/mn10300/unit-asb2305/pci-asb2305.c +++ b/arch/mn10300/unit-asb2305/pci-asb2305.c @@ -103,7 +103,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list) idx < PCI_NUM_RESOURCES; idx++) { r = &dev->resource[idx]; - if (!r->flags) + if (resource_disabled(r)) continue; if (!r->start || pci_claim_bridge_resource(dev, idx) < 0) { @@ -188,7 +188,7 @@ static int __init pcibios_assign_resources(void) addresses. */ for_each_pci_dev(dev) { r = &dev->resource[PCI_ROM_RESOURCE]; - if (!r->flags || !r->start) + if (resource_disabled(r) || !r->start) continue; if (pci_claim_resource(dev, PCI_ROM_RESOURCE) < 0) { r->end -= r->start; diff --git a/arch/mn10300/unit-asb2305/pci.c b/arch/mn10300/unit-asb2305/pci.c index 3dfe2d3..ad77b18 100644 --- a/arch/mn10300/unit-asb2305/pci.c +++ b/arch/mn10300/unit-asb2305/pci.c @@ -291,7 +291,7 @@ static void pcibios_fixup_device_resources(struct pci_dev *dev) for (idx = 0; idx < PCI_BRIDGE_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_resource(dev, idx); @@ -308,7 +308,7 @@ static void pcibios_fixup_bridge_resources(struct pci_dev *dev) for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { struct resource *r = &dev->resource[idx]; - if (!r->flags || r->parent || !r->start) + if (resource_disabled(r) || r->parent || !r->start) continue; pci_claim_bridge_resource(dev, idx); diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 8853667..a830e0c 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -810,7 +810,7 @@ static void pcibios_fixup_resources(struct pci_dev *dev) for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { struct resource *res = dev->resource + i; struct pci_bus_region reg; - if (!res->flags) + if (resource_disabled(res)) continue; /* If we're going to re-assign everything, we mark all resources @@ -919,7 +919,7 @@ static void pcibios_fixup_bridge(struct pci_bus *bus) struct pci_dev *dev = bus->self; pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->flags) + if (!res || resource_disabled(res)) continue; if (i >= 3 && bus->self->transparent) continue; @@ -1160,7 +1160,8 @@ static void pcibios_allocate_bus_resources(struct pci_bus *bus) pci_domain_nr(bus), bus->number); pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->flags || res->start > res->end || res->parent) + if (!res || resource_disabled(res) || + res->start > res->end || res->parent) continue; /* If the resource was left unset at this point, we clear it */ @@ -1255,7 +1256,8 @@ static void __init pcibios_allocate_resources(int pass) r = &dev->resource[idx]; if (r->parent) /* Already allocated */ continue; - if (!r->flags || (r->flags & IORESOURCE_UNSET)) + if (resource_disabled(r) || + (r->flags & IORESOURCE_UNSET)) continue; /* Not assigned at all */ /* We only allocate ROMs on pass 1 just in case they * have been screwed up by firmware @@ -1393,7 +1395,7 @@ void pcibios_claim_one_bus(struct pci_bus *bus) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; pr_debug("PCI: Claiming %s: Resource %d: %pR\n", @@ -1474,7 +1476,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, /* Hookup PHB IO resource */ res = &hose->io_resource; - if (!res->flags) { + if (resource_disabled(res)) { pr_info("PCI: I/O resource not set for host" " bridge %s (domain %d)\n", hose->dn->full_name, hose->global_number); @@ -1489,7 +1491,7 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, /* Hookup PHB Memory resources */ for (i = 0; i < 3; ++i) { res = &hose->mem_resources[i]; - if (!res->flags) { + if (resource_disabled(res)) { if (i == 0) printk(KERN_ERR "PCI: Memory resource 0 not set for " "host bridge %s (domain %d)\n", diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index 414fd1a..81484c1 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -874,7 +874,7 @@ static int pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset) num_vfs = pdn->num_vfs; for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &dev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags)) @@ -905,7 +905,7 @@ static int pnv_pci_vf_resource_shift(struct pci_dev *dev, int offset) */ for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &dev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags)) @@ -1188,7 +1188,7 @@ static int pnv_pci_vf_assign_m64(struct pci_dev *pdev, u16 num_vfs) for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &pdev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags)) @@ -2757,7 +2757,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &pdev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || res->parent) + if (resource_disabled(res) || res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags)) { dev_warn(&pdev->dev, " non M64 VF BAR%d: %pR\n", @@ -2779,7 +2779,7 @@ static void pnv_pci_ioda_fixup_iov_resources(struct pci_dev *pdev) for (i = 0; i < PCI_SRIOV_NUM_BARS; i++) { res = &pdev->resource[i + PCI_IOV_RESOURCES]; - if (!res->flags || res->parent) + if (resource_disabled(res) || res->parent) continue; if (!pnv_pci_is_mem_pref_64(res->flags)) { dev_warn(&pdev->dev, "Skipping expanding VF BAR%d: %pR\n", @@ -2820,7 +2820,7 @@ static void pnv_ioda_setup_pe_seg(struct pci_controller *hose, BUG_ON(!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL))); pci_bus_for_each_resource(pe->pbus, res, i) { - if (!res || !res->flags || + if (!res || resource_disabled(res) || res->start > res->end) continue; diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 7ef12a3..72c4676 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -653,7 +653,7 @@ int pcibios_add_device(struct pci_dev *pdev) for (i = 0; i < PCI_BAR_COUNT; i++) { res = &pdev->resource[i]; - if (res->parent || !res->flags) + if (res->parent || resource_disabled(res)) continue; pci_claim_resource(pdev, i); } diff --git a/arch/sparc/kernel/pci.c b/arch/sparc/kernel/pci.c index 36a0dfb..afc4720 100644 --- a/arch/sparc/kernel/pci.c +++ b/arch/sparc/kernel/pci.c @@ -631,7 +631,7 @@ static void pci_claim_bus_resources(struct pci_bus *bus) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || !r->start || !r->flags) + if (r->parent || !r->start || resource_disabled(r)) continue; if (ofpci_verbose) diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c index 6f27780..48c367c 100644 --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -224,7 +224,7 @@ static void pcibios_allocate_bridge_resources(struct pci_dev *dev) for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { r = &dev->resource[idx]; - if (!r->flags) + if (resource_disabled(r)) continue; if (r->parent) /* Already allocated */ continue; @@ -353,7 +353,7 @@ static void pcibios_allocate_dev_rom_resource(struct pci_dev *dev) * addresses. */ r = &dev->resource[PCI_ROM_RESOURCE]; - if (!r->flags || !r->start) + if (resource_disabled(r) || !r->start) return; if (r->parent) /* Already allocated */ return; diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c index b848cc3..f34d061 100644 --- a/arch/xtensa/kernel/pci.c +++ b/arch/xtensa/kernel/pci.c @@ -142,7 +142,7 @@ static void __init pci_controller_apertures(struct pci_controller *pci_ctrl, io_offset = (unsigned long)pci_ctrl->io_space.base; res = &pci_ctrl->io_resource; - if (!res->flags) { + if (resource_disabled(res)) { if (io_offset) printk (KERN_ERR "I/O resource not set for host" " bridge %d\n", pci_ctrl->index); @@ -156,7 +156,7 @@ static void __init pci_controller_apertures(struct pci_controller *pci_ctrl, for (i = 0; i < 3; i++) { res = &pci_ctrl->mem_resources[i]; - if (!res->flags) { + if (resource_disabled(res)) { if (i > 0) continue; printk(KERN_ERR "Memory resource not set for " diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 041bc18..d4a06d2 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -1771,7 +1771,8 @@ static int dmar_init_reserved_ranges(void) for (i = 0; i < PCI_NUM_RESOURCES; i++) { r = &pdev->resource[i]; - if (!r->flags || !(r->flags & IORESOURCE_MEM)) + if (resource_disabled(r) || + !(r->flags & IORESOURCE_MEM)) continue; iova = reserve_iova(&reserved_iova_list, IOVA_PFN(r->start), diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index 7678fe0..3f307a3 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -365,7 +365,7 @@ static int rcar_pcie_setup(int nr, struct pci_sys_data *sys) for (i = 0; i < RCAR_PCI_MAX_RESOURCES; i++) { res = &pcie->res[i]; - if (!res->flags) + if (resource_disabled(res)) continue; rcar_pcie_setup_window(i, pcie); diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index ee0ebff..808d08b 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -438,7 +438,7 @@ found: res = &dev->resource[i + PCI_IOV_RESOURCES]; bar64 = __pci_read_base(dev, pci_bar_unknown, res, pos + PCI_SRIOV_BAR + i * 4); - if (!res->flags) + if (resource_disabled(res)) continue; if (resource_size(res) & (PAGE_SIZE - 1)) { rc = -EIO; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index edc8d08..f9589d9 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2203,7 +2203,7 @@ void pci_bus_release_busn_res(struct pci_bus *b) struct resource *res = &b->busn_res; int ret; - if (!res->flags || !res->parent) + if (resource_disabled(res) || !res->parent) return; ret = release_resource(res); diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index be0bdfb..c51c0e6 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -336,7 +336,7 @@ static void quirk_bar_fixed(struct pci_dev *dev) for (i = 0; i < PCI_STD_RESOURCE_END; i++) { struct resource *r = &dev->resource[i]; - if (!r->start || !r->flags) + if (!r->start || resource_disabled(r)) continue; r->flags |= IORESOURCE_PCI_FIXED; } @@ -350,7 +350,7 @@ static void quirk_allocate_fixed(struct pci_dev *dev) for (i = 0; i < PCI_NUM_RESOURCES; i++) { struct resource *r = &dev->resource[i]; - if (r->parent || + if (r->parent || resource_disabled(r) || !(r->flags & IORESOURCE_PCI_FIXED) || !(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) continue; diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index eb0ad53..585a9d3 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -28,7 +28,7 @@ int pci_enable_rom(struct pci_dev *pdev) struct pci_bus_region region; u32 rom_addr; - if (!res->flags) + if (resource_disabled(res)) return -1; pcibios_resource_to_bus(pdev->bus, &region, res); diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 673778c..23318bd 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -223,7 +223,7 @@ static void pdev_assign_resources_prepare(struct pci_dev *dev, if (r->flags & IORESOURCE_PCI_FIXED) continue; - if (!(r->flags) || r->parent) + if (resource_disabled(r) || r->parent) continue; r_align = __pci_resource_alignment(dev, r, realloc_head); @@ -319,7 +319,7 @@ static void reassign_resources_sorted(struct list_head *realloc_head, list_for_each_entry_safe(add_res, tmp, realloc_head, list) { res = add_res->res; /* skip resource that has been reset */ - if (!res->flags) + if (resource_disabled(res)) goto out; /* skip this resource if not found in head list */ @@ -2124,7 +2124,7 @@ static void pci_bus_dump_res(struct pci_bus *bus) int i; pci_bus_for_each_resource(bus, res, i) { - if (!res || !res->end || !res->flags) + if (!res || !res->end || resource_disabled(res)) continue; dev_printk(KERN_DEBUG, &bus->dev, "resource %d %pR\n", i, res); @@ -2207,7 +2207,7 @@ static int iov_resources_unassigned(struct pci_dev *dev, void *data) struct pci_bus_region region; /* Not assigned or rejected by kernel? */ - if (!r->flags) + if (resource_disabled(r)) continue; pcibios_resource_to_bus(dev->bus, &region, r); diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c index 26aedde..55caf7a 100644 --- a/drivers/pci/setup-res.c +++ b/drivers/pci/setup-res.c @@ -40,7 +40,7 @@ void pci_update_resource(struct pci_dev *dev, int resno) * Ignore resources for unimplemented BARs and unused resource slots * for 64 bit BARs. */ - if (!res->flags) + if (resource_disabled(res)) return; if (res->flags & IORESOURCE_UNSET) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 27dbb18..fb21179 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -179,6 +179,10 @@ static inline bool resource_contains(struct resource *r1, struct resource *r2) return r1->start <= r2->start && r1->end >= r2->end; } +static inline bool resource_disabled(struct resource *r) +{ + return !r->flags || (r->flags & IORESOURCE_DISABLED); +} /* Convenience shorthand with allocation */ #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0)

[v8,59/61] PCI: Introduce resource_disabled()

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