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* of: Use of_node_name_eq for node name comparisonsRob Herring2018-12-051-1/+1
| | | | | | | | | | Convert string compares of DT node names to use of_node_name_eq helper instead. This removes direct access to the node name pointer. Cc: Frank Rowand <frowand.list@gmail.com> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Cc: devicetree@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* of: Use device_type helpers to access the node typeRob Herring2018-11-271-2/+2
| | | | | | | | | Remove directly accessing device_node.type pointer and use the accessors instead. This will eventually allow removing the type pointer. Cc: Frank Rowand <frowand.list@gmail.com> Cc: devicetree@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* drivers/of: Make of_io_request_and_map() "name" argument optionalBenjamin Herrenschmidt2018-07-101-2/+4
| | | | | | | | | These days of_address_to_resource() puts a reasonable name in the resource struct, thus make the "name" argument an optional override. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Rob Herring <robh@kernel.org>
* of: Add missing I/O range exception for indirect-IO devicesZhichang Yuan2018-04-041-16/+76
| | | | | | | | | | | | | | | | | | | | | | | There are some special ISA/LPC devices that work on a specific I/O range where it is not correct to specify a 'ranges' property in the DTS parent node as CPU addresses translated from DTS node are only for memory space on some architectures, such as ARM64. Without the parent 'ranges' property, of_translate_address() returns an error. Here we add special handling for this case. During the OF address translation, some checking will be performed to identify whether the device node is registered as indirect-IO. If it is, the I/O translation will be done in a different way from that one of PCI MMIO. In this way, the I/O 'reg' property of the special ISA/LPC devices will be parsed correctly. Tested-by: dann frazier <dann.frazier@canonical.com> Signed-off-by: Zhichang Yuan <yuanzhichang@hisilicon.com> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> # earlier draft Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Rob Herring <robh@kernel.org>
* PCI: Add fwnode handler as input param of pci_register_io_range()Gabriele Paoloni2018-04-041-1/+3
| | | | | | | | | | | | | | In preparation for having the PCI MMIO helpers use the new generic I/O space management (logical PIO) we need to add the fwnode handler as an extra input parameter. Changes the signature of pci_register_io_range() and its callers as needed. Tested-by: dann frazier <dann.frazier@canonical.com> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Rob Herring <robh@kernel.org>
* Merge tag 'pci-v4.16-changes' of ↵Linus Torvalds2018-02-061-5/+4Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: - skip AER driver error recovery callbacks for correctable errors reported via ACPI APEI, as we already do for errors reported via the native path (Tyler Baicar) - fix DPC shared interrupt handling (Alex Williamson) - print full DPC interrupt number (Keith Busch) - enable DPC only if AER is available (Keith Busch) - simplify DPC code (Bjorn Helgaas) - calculate ASPM L1 substate parameter instead of hardcoding it (Bjorn Helgaas) - enable Latency Tolerance Reporting for ASPM L1 substates (Bjorn Helgaas) - move ASPM internal interfaces out of public header (Bjorn Helgaas) - allow hot-removal of VGA devices (Mika Westerberg) - speed up unplug and shutdown by assuming Thunderbolt controllers don't support Command Completed events (Lukas Wunner) - add AtomicOps support for GPU and Infiniband drivers (Felix Kuehling, Jay Cornwall) - expose "ari_enabled" in sysfs to help NIC naming (Stuart Hayes) - clean up PCI DMA interface usage (Christoph Hellwig) - remove PCI pool API (replaced with DMA pool) (Romain Perier) - deprecate pci_get_bus_and_slot(), which assumed PCI domain 0 (Sinan Kaya) - move DT PCI code from drivers/of/ to drivers/pci/ (Rob Herring) - add PCI-specific wrappers for dev_info(), etc (Frederick Lawler) - remove warnings on sysfs mmap failure (Bjorn Helgaas) - quiet ROM validation messages (Alex Deucher) - remove redundant memory alloc failure messages (Markus Elfring) - fill in types for compile-time VGA and other I/O port resources (Bjorn Helgaas) - make "pci=pcie_scan_all" work for Root Ports as well as Downstream Ports to help AmigaOne X1000 (Bjorn Helgaas) - add SPDX tags to all PCI files (Bjorn Helgaas) - quirk Marvell 9128 DMA aliases (Alex Williamson) - quirk broken INTx disable on Ceton InfiniTV4 (Bjorn Helgaas) - fix CONFIG_PCI=n build by adding dummy pci_irqd_intx_xlate() (Niklas Cassel) - use DMA API to get MSI address for DesignWare IP (Niklas Cassel) - fix endpoint-mode DMA mask configuration (Kishon Vijay Abraham I) - fix ARTPEC-6 incorrect IS_ERR() usage (Wei Yongjun) - add support for ARTPEC-7 SoC (Niklas Cassel) - add endpoint-mode support for ARTPEC (Niklas Cassel) - add Cadence PCIe host and endpoint controller driver (Cyrille Pitchen) - handle multiple INTx status bits being set in dra7xx (Vignesh R) - translate dra7xx hwirq range to fix INTD handling (Vignesh R) - remove deprecated Exynos PHY initialization code (Jaehoon Chung) - fix MSI erratum workaround for HiSilicon Hip06/Hip07 (Dongdong Liu) - fix NULL pointer dereference in iProc BCMA driver (Ray Jui) - fix Keystone interrupt-controller-node lookup (Johan Hovold) - constify qcom driver structures (Julia Lawall) - rework Tegra config space mapping to increase space available for endpoints (Vidya Sagar) - simplify Tegra driver by using bus->sysdata (Manikanta Maddireddy) - remove PCI_REASSIGN_ALL_BUS usage on Tegra (Manikanta Maddireddy) - add support for Global Fabric Manager Server (GFMS) event to Microsemi Switchtec switch driver (Logan Gunthorpe) - add IDs for Switchtec PSX 24xG3 and PSX 48xG3 (Kelvin Cao) * tag 'pci-v4.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (140 commits) PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe endpoint controller PCI: endpoint: Fix EPF device name to support multi-function devices PCI: endpoint: Add the function number as argument to EPC ops PCI: cadence: Add host driver for Cadence PCIe controller dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller PCI: Add vendor ID for Cadence PCI: Add generic function to probe PCI host controllers PCI: generic: fix missing call of pci_free_resource_list() PCI: OF: Add generic function to parse and allocate PCI resources PCI: Regroup all PCI related entries into drivers/pci/Makefile PCI/DPC: Reformat DPC register definitions PCI/DPC: Add and use DPC Status register field definitions PCI/DPC: Squash dpc_rp_pio_get_info() into dpc_process_rp_pio_error() PCI/DPC: Remove unnecessary RP PIO register structs PCI/DPC: Push dpc->rp_pio_status assignment into dpc_rp_pio_get_info() PCI/DPC: Squash dpc_rp_pio_print_error() into dpc_rp_pio_get_info() PCI/DPC: Make RP PIO log size check more generic PCI/DPC: Rename local "status" to "dpc_status" PCI/DPC: Squash dpc_rp_pio_print_tlp_header() into dpc_rp_pio_print_error() ...
| * Merge remote-tracking branch 'lorenzo/pci/tegra' into nextBjorn Helgaas2018-02-011-0/+1
| |\ | | | | | | | | | | | | | | | | | | * lorenzo/pci/tegra: PCI: tegra: Use bus->sysdata to store and get host private data of: Export of_pci_range_to_resource() PCI: tegra: Refactor configuration space mapping code
| | * of: Export of_pci_range_to_resource()Manikanta Maddireddy2018-01-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some PCIe host drivers parse of_pci_range from device tree and convert it to resources. Export of_pci_range_to_resource() to allow PCIe host drivers to be compiled as loadable kernel module. Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com> [lorenzo.pieralisi@arm.com: rewrote commit log] Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Rob Herring <robh@kernel.org>
| * | PCI: Move OF-related PCI functions into PCI coreRob Herring2018-01-181-5/+3Star
| |/ | | | | | | | | | | | | | | | | | | | | Following what has been done for other subsystems, move the remaining PCI related code out of drivers/of/ and into drivers/pci/of.c With this, we can kill a few kconfig symbols. Signed-off-by: Rob Herring <robh@kernel.org> [bhelgaas: minor whitespace, comment cleanups] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Frank Rowand <frowand.list@gmail.com>
* / of: Use SPDX license tag for DT filesRob Herring2018-01-081-1/+1
|/ | | | | | | | | | | | Convert remaining DT files to use SPDX-License-Identifier tags. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Reviewed-by: Frank Rowand <frank.rowand@sony.com> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Rob Herring <robh@kernel.org>
* of/pci: Add of_pci_dma_range_parser_init() for dma-ranges parsing supportMarc Gonzalez2017-10-051-3/+16
| | | | | | | | | | | Several host bridge drivers duplicate of_pci_range_parser_init() in order to parse their dma-ranges property. Provide of_pci_dma_range_parser_init() for that use case. Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rob Herring <robh@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
* of: remove unused pci_space variable from address.cShawn Lin2017-07-211-2/+1Star
| | | | | | | | | | | | It was never used and could be removed, otherwise we could see a warning: drivers/of/address.c: In function 'of_pci_range_parser_one': drivers/of/address.c:277:14: warning: variable 'pci_space' set but not used [-Wunused-but-set-variable] Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Rob Herring <robh@kernel.org>
* of: Convert to using %pOF instead of full_nameRob Herring2017-07-191-11/+10Star
| | | | | | | | Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring <robh@kernel.org>
* of: address.c header comment typoFrank Rowand2017-06-221-1/+1
| | | | | | | Fix typo in header comment for of_address_to_resource() Signed-off-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
* of: fix sparse warning in of_pci_range_parser_oneRob Herring2017-05-041-1/+1
| | | | | | | | | | | | | | sparse gives the following warning for 'pci_space': ../drivers/of/address.c:266:26: warning: incorrect type in assignment (different base types) ../drivers/of/address.c:266:26: expected unsigned int [unsigned] [usertype] pci_space ../drivers/of/address.c:266:26: got restricted __be32 const [usertype] <noident> It appears that pci_space is only ever accessed on powerpc, so the endian swap is often not needed. Cc: stable@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* of: use pr_fmt prefix for all console printingRob Herring2016-07-181-24/+25
| | | | | | | | | | | | Clean-up all the DT printk functions to use common pr_fmt prefix. Some print statements such as kmalloc errors were redundant, so just drop those. Cc: Frank Rowand <frowand.list@gmail.com> Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Reviewed-by: Frank Rowand <frank.rowand@am.sony.com> Signed-off-by: Rob Herring <robh@kernel.org>
* PCI, of: Move PCI I/O space management to PCI core codeTomasz Nowicki2016-05-121-115/+1Star
| | | | | | | | | | | | | | No functional changes in this patch. PCI I/O space mapping code does not depend on OF; therefore it can be moved to PCI core code. This way we will be able to use it, e.g., in ACPI PCI code. Suggested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Tomasz Nowicki <tn@semihalf.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Arnd Bergmann <arnd@arndb.de> CC: Liviu Dudau <Liviu.Dudau@arm.com>
* Merge tag 'devicetree-for-4.5' of ↵Linus Torvalds2016-01-141-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull DeviceTree updates from Rob Herring: - Rework and export the changeset API to make it available to users other than DT overlays - ARM secure devices binding - OCTEON USB binding - Clean-up of various SRAM binding docs - Various other binding doc updates * tag 'devicetree-for-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (21 commits) drivers/of: Export OF changeset functions Fix documentation for adp1653 DT ARM: psci: Fix indentation in DT bindings of/platform: export of_default_bus_match_table of/unittest: Show broken behaviour in the platform bus of: fix declaration of of_io_request_and_map of/address: replace printk(KERN_ERR ...) with pr_err(...) of/irq: optimize device node matching loop in of_irq_init() dt-bindings: tda998x: Document the required 'port' node. net/macb: bindings doc: Merge cdns-emac to macb dt-bindings: Misc fix for the ATH79 DDR controllers dt-bindings: Misc fix for the ATH79 MISC interrupt controllers Documentation: dt: Add bindings for Secure-only devices dt-bindings: ARM: add arm,cortex-a72 compatible string ASoC: Atmel: ClassD: add GCK's parent clock in DT binding DT: add Olimex to vendor prefixes Documentation: fsl-quadspi: Add fsl,ls1021-qspi compatible string Documentation/devicetree: document OCTEON USB bindings usb: misc: usb3503: Describe better how to bind clock to the hub dt-bindings: Consolidate SRAM bindings from all vendors ...
| * of/address: replace printk(KERN_ERR ...) with pr_err(...)Masahiro Yamada2015-12-091-1/+1
| | | | | | | | | | | | | | A trivial change suggested by checkpatch.pl. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Rob Herring <robh@kernel.org>
* | of/address: fix typo in comment block of of_translate_one()Masahiro Yamada2015-12-011-2/+3
|/ | | | | | | | | Remove the "not" before "cannot". I am fixing the comment block style while I am here. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Rob Herring <robh@kernel.org>
* PCI: of: Add 64-bit address recognition without LPAE supportPavel Fedin2015-10-131-0/+6
| | | | | | | | | | | | | | | | | | | | | | | If non-LPAE kernel is booted up on a machine with 64-bit PCI resources, PCI controller probe fails with: PCI host bridge /pcie@10000000 ranges: IO 0x3eff0000..0x3effffff -> 0x00000000 MEM 0x10000000..0x3efeffff -> 0x10000000 MEM 0x8000000000..0xffffffffff -> 0x8000000000 pci-host-generic 3f000000.pcie: resource collision: [mem 0x00000000-0xffffffff] conflicts with /pl011@9000000 [mem 0x09000000-0x09000fff] pci-host-generic: probe of 3f000000.pcie failed with error -16 This happens because res->start assignment in of_pci_range_to_resource() truncates the upper part of the address, because res->start is of phys_addr_t type, which is 32-bit on non-LPAE kernels. This patch adds explicit recognition of 64-bit resources, preventing from potential problems when e. g. 0x8000001234 would be converted to 0x00001234. Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Signed-off-by: Rob Herring <robh@kernel.org>
* of/address: Don't loop forever in of_find_matching_node_by_address().David Daney2015-08-251-3/+3
| | | | | | | | | | | | | | If the internal call to of_address_to_resource() fails, we end up looping forever in of_find_matching_node_by_address(). This can be caused by a defective device tree, or calling with an incorrect matches argument. Fix by calling of_find_matching_node() unconditionally at the end of the loop. Signed-off-by: David Daney <david.daney@cavium.com> Cc: stable@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* Merge tag 'devicetree-for-linus' of ↵Linus Torvalds2015-07-021-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux Pull devicetree updates from Grant Likely: "A whole lot of bug fixes. Nothing stands out here except the ability to enable CONFIG_OF on every architecture, and an import of a newer version of dtc" * tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux: (22 commits) of/irq: Rename "intc_desc" to "of_intc_desc" to fix OF on sh of/irq: Fix pSeries boot failure Documentation: DT: Fix a typo in the filename "lantiq,<chip>-pinumx.txt" of: define of_find_node_by_phandle for !CONFIG_OF of/address: use atomic allocation in pci_register_io_range() of: Add vendor prefix for Zodiac Inflight Innovations dt/fdt: add empty versions of early_init_dt_*_memory_arch of: clean-up unnecessary libfdt include paths of: make unittest select OF_EARLY_FLATTREE instead of depend on it of: make CONFIG_OF user selectable MIPS: prepare for user enabling of CONFIG_OF of/fdt: fix argument name and add comments of unflatten_dt_node() of: return NUMA_NO_NODE from fallback of_node_to_nid() tps6507x.txt: Remove executable permission of/overlay: Grammar s/an negative/a negative/ of/fdt: Make fdt blob input parameters of unflatten functions const of: add helper function to retrive match data of: Grammar s/property exist/property exists/ of: Move OF flags to be visible even when !CONFIG_OF scripts/dtc: Update to upstream version 9d3649bd3be245c9 ...
| * of/address: use atomic allocation in pci_register_io_range()Jingoo Han2015-06-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | When kzalloc() is called under spin_lock(), GFP_ATOMIC should be used to avoid sleeping allocation. The call tree is: of_pci_range_to_resource() --> pci_register_io_range() <-- takes spin_lock(&io_range_lock); --> kzalloc() Signed-off-by: Jingoo Han <jingoohan1@gmail.com> Cc: stable@vger.kernel.org # 3.18+ Signed-off-by: Rob Herring <robh@kernel.org>
* | of/pci: Fix pci_address_to_pio() conversion of CPU address to I/O portZhichang Yuan2015-05-161-1/+1
|/ | | | | | | | | | | | | | | 41f8bba7f555 ("of/pci: Add pci_register_io_range() and pci_pio_to_address()") added support for systems with several I/O ranges described by OF bindings. It modified pci_address_to_pio() look up the io_range for a given CPU physical address, but the conversion was wrong. Fix the conversion of address to I/O port. [bhelgaas: changelog] Fixes: 41f8bba7f555 ("of/pci: Add pci_register_io_range() and pci_pio_to_address()") Signed-off-by: Zhichang Yuan <yuanzhichang@hisilicon.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> CC: stable@vger.kernel.org # v3.18+
* drivers/of: Add empty ranges quirk for PA-SemiBenjamin Herrenschmidt2015-03-281-3/+8
| | | | | | | | | | | | The "sdc" node is missing the ranges property, it needs to be treated as having an empty one otherwise translation fails for its children. Fixes 746c9e9f92dd, "of/base: Fix PowerPC address parsing hack" Tested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@linaro.org> Cc: Stable <stable@vger.kernel.org> # v3.18+
* Merge tag 'v3.18-rc6' into devicetree/nextGrant Likely2014-11-241-3/+16
|\ | | | | | | | | | | | | | | | | | | | | | | v3.18-rc6 contains an important DT bug fix, c1a2086e2d, "of/selftest: Fix off-by-one error in removal path" which affects testing of the overlay patch series. Merge it into the devicetree/next staging branch so that the overlay patches are applied on top of a known working tree. Linux 3.18-rc6 Conflicts: drivers/of/address.c
| * of/base: Fix PowerPC address parsing hackBenjamin Herrenschmidt2014-11-181-3/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We have a historical hack that treats missing ranges properties as the equivalent of an empty one. This is needed for ancient PowerMac "bad" device-trees, and shouldn't be enabled for any other PowerPC platform, otherwise we get some nasty layout of devices in sysfs or even duplication when a set of otherwise identically named devices is created multiple times under a different parent node with no ranges property. This fix is needed for the PowerNV i2c busses to be exposed properly and will fix a number of other embedded cases. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: <stable@vger.kernel.org> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
* | of/address: Don't throw errors on absent ranges propertiesBenjamin Herrenschmidt2014-11-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The core always tries to translate any "reg" property to construct the platform device names. This results in a pile of "OF: no ranges; cannot translate" errors in dmesg whenever we expose things like i2c devices that cannot directly translate to the MMIO space. Turn this into a pr_debug instead Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* | of: Request and map make argument name constantMatthias Brugger2014-11-041-1/+1
|/ | | | | | | This patch makes the name argument from of_io_request_and_map constant. Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* of/pci: Fix the conversion of IO ranges into IO resourcesLiviu Dudau2014-10-011-4/+40
| | | | | | | | | | | | | | | | | | | | | The ranges property for a host bridge controller in DT describes the mapping between the PCI bus address and the CPU physical address. The resources framework however expects that the IO resources start at a pseudo "port" address 0 (zero) and have a maximum size of IO_SPACE_LIMIT. The conversion from PCI ranges to resources failed to take that into account, returning a CPU physical address instead of a port number. Also fix all the drivers that depend on the old behaviour by fetching the CPU physical address based on the port number where it is being needed. Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: Arnd Bergmann <arnd@arndb.de> CC: Thierry Reding <thierry.reding@gmail.com> CC: Simon Horman <horms@verge.net.au> CC: Catalin Marinas <catalin.marinas@arm.com>
* of/pci: Move of_pci_range_to_resource() to of/address.cLiviu Dudau2014-09-301-0/+9
| | | | | | | | | | | | | | | | | | | | We need to enhance of_pci_range_to_resources() enough that it won't make sense for it to be inline anymore. Move it to drivers/of/address.c, under #ifdef CONFIG_PCI. of_address.h previously implemented of_pci_range_to_resources() unconditionally, regardless of any config options. The implementation in address.c is defined only when CONFIG_OF_ADDRESS=y and CONFIG_PCI=y, so add a dummy version to avoid build errors when CONFIG_OF or CONFIG_OF_ADDRESS is not defined. [bhelgaas: drop extra detail from changelog, move def under CONFIG_PCI, add dummy of_pci_range_to_resource() for build errors (from Arnd)] Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: Arnd Bergmann <arnd@arndb.de> CC: Catalin Marinas <catalin.marinas@arm.com>
* of/pci: Add pci_register_io_range() and pci_pio_to_address()Liviu Dudau2014-09-301-0/+109
| | | | | | | | | | | | | | | | | | | | | | | | Some architectures do not have a simple view of the PCI I/O space and instead use a range of CPU addresses that map to bus addresses. For some architectures these ranges will be expressed by OF bindings in a device tree file. This patch introduces a pci_register_io_range() helper function with a generic implementation that can be used by such architectures to keep track of the I/O ranges described by the PCI bindings. If the PCI_IOBASE macro is not defined, that signals lack of support for PCI and we return an error. In order to retrieve the CPU address associated with an I/O port, a new helper function pci_pio_to_address() is introduced. This will search in the list of ranges registered with pci_register_io_range() and return the CPU address that corresponds to the given port. [arnd: add dummy !CONFIG_OF pci_pio_to_address() to fix build errors] Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Rob Herring <robh@kernel.org> CC: Grant Likely <grant.likely@linaro.org>
* of: Provide a function to request and map memoryMatthias Brugger2014-07-231-0/+36
| | | | | | | | | | | | A call to of_iomap does not request the memory region. This patch adds the function of_io_request_and_map which requests the memory region before mapping it. Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com> Suggested-by: Thomas Gleixner <tglx@linutronix.de> Suggested-by: Rob Herring <robh@kernel.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
* Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into nextLinus Torvalds2014-06-061-0/+110
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM updates from Russell King: - Major clean-up of the L2 cache support code. The existing mess was becoming rather unmaintainable through all the additions that others have done over time. This turns it into a much nicer structure, and implements a few performance improvements as well. - Clean up some of the CP15 control register tweaks for alignment support, moving some code and data into alignment.c - DMA properties for ARM, from Santosh and reviewed by DT people. This adds DT properties to specify bus translations we can't discover automatically, and to indicate whether devices are coherent. - Hibernation support for ARM - Make ftrace work with read-only text in modules - add suspend support for PJ4B CPUs - rework interrupt masking for undefined instruction handling, which allows us to enable interrupts earlier in the handling of these exceptions. - support for big endian page tables - fix stacktrace support to exclude stacktrace functions from the trace, and add save_stack_trace_regs() implementation so that kprobes can record stack traces. - Add support for the Cortex-A17 CPU. - Remove last vestiges of ARM710 support. - Removal of ARM "meminfo" structure, finally converting us solely to memblock to handle the early memory initialisation. * 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (142 commits) ARM: ensure C page table setup code follows assembly code (part II) ARM: ensure C page table setup code follows assembly code ARM: consolidate last remaining open-coded alignment trap enable ARM: remove global cr_no_alignment ARM: remove CPU_CP15 conditional from alignment.c ARM: remove unused adjust_cr() function ARM: move "noalign" command line option to alignment.c ARM: provide common method to clear bits in CPU control register ARM: 8025/1: Get rid of meminfo ARM: 8060/1: mm: allow sub-architectures to override PCI I/O memory type ARM: 8066/1: correction for ARM patch 8031/2 ARM: 8049/1: ftrace/add save_stack_trace_regs() implementation ARM: 8065/1: remove last use of CONFIG_CPU_ARM710 ARM: 8062/1: Modify ldrt fixup handler to re-execute the userspace instruction ARM: 8047/1: rwsem: use asm-generic rwsem implementation ARM: l2c: trial at enabling some Cortex-A9 optimisations ARM: l2c: add warnings for stuff modifying aux_ctrl register values ARM: l2c: print a warning with L2C-310 caches if the cache size is modified ARM: l2c: remove old .set_debug method ARM: l2c: kill L2X0_AUX_CTRL_MASK before anyone else makes use of this ...
| * of: introduce of_dma_is_coherent() helperSantosh Shilimkar2014-05-061-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The of_dma_is_coherent() helper parses the given DT device node to see if the "dma-coherent" property is supported and returns true or false accordingly. If the arch is always coherent or always noncoherent, then the default DMA ops has to be specified accordingly. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Olof Johansson <olof@lixom.net> Cc: Grant Likely <grant.likely@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
| * of: introduce of_dma_get_range() helperGrygorii Strashko2014-05-061-0/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The of_dma_get_range() allows to find "dma-range" property for the specified device and parse it. dma-ranges format: DMA addr (dma_addr) : naddr cells CPU addr (phys_addr_t) : pna cells size : nsize cells Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Olof Johansson <olof@lixom.net> Cc: Grant Likely <grant.likely@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
* | of: kill off of_can_translate_addressRob Herring2014-05-131-21/+1Star
|/ | | | | | | | | | | | | | | of_can_translate_address only checks some conditions for address translation, but does not check other conditions like having range properties. The checks it does do are redundant with __of_address_translate. The only difference is printing a message or not. Since we only have a single caller that does the full translation anyway, just remove of_can_translate_address and quiet the error message. Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org> Tested-by: Frank Rowand <frank.rowand@sonymobile.com> Reviewed-by: Frank Rowand <frank.rowand@sonymobile.com>
* Merge tag 'v3.14-rc5' into HEADGrant Likely2014-03-041-2/+3
|\ | | | | | | Linux 3.14-rc5
| * of: fix PCI bus match for PCIe slotsKleber Sacilotto de Souza2014-02-051-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On IBM pseries systems the device_type device-tree property of a PCIe bridge contains the string "pciex". The of_bus_pci_match() function was looking only for "pci" on this property, so in such cases the bus matching code was falling back to the default bus, causing problems on functions that should be using "assigned-addresses" for region address translation. This patch fixes the problem by also looking for "pciex" on the PCI bus match function. v2: added comment Signed-off-by: Kleber Sacilotto de Souza <klebers@linux.vnet.ibm.com> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: stable@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* | of: Allows to use the PCI translator without the PCI coreGregory CLEMENT2014-02-201-3/+5
|/ | | | | | | | | | | | | | | | | | | | | Translating an address from a PCI node of the device-tree into a CPU physical address doesn't require the core PCI support. Those translations are just related to the device tree itself. The use case to translate an address from a PCI node without actually using the PCI core support is when one needs to access the PCI controller without accessing any PCI devices. Marvell SoCs, such as Kirkwood, Dove or Armada XP for instance, come with an IP of a PCI controller. In the registers of this controller are stored the ID and the revision of a SoC. With this patch it will be possible to read the SoC ID of a board without any PCI device and then without the PCI core support. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* Revert "of/address: Handle #address-cells > 2 specially"Rob Herring2013-12-301-8/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit e38c0a1fbc5803cbacdaac0557c70ac8ca5152e7. Nikita Yushchenko reports: While trying to make freescale p2020ds and mpc8572ds boards working with mainline kernel, I faced that commit e38c0a1f (Handle Both these boards have uli1575 chip. Corresponding part in device tree is something like uli1575@0 { reg = <0x0 0x0 0x0 0x0 0x0>; #size-cells = <2>; #address-cells = <3>; ranges = <0x2000000 0x0 0x80000000 0x2000000 0x0 0x80000000 0x0 0x20000000 0x1000000 0x0 0x0 0x1000000 0x0 0x0 0x0 0x10000>; isa@1e { ... I.e. it has #address-cells = <3> With commit e38c0a1f reverted, devices under uli1575 are registered correctly, e.g. for rtc OF: ** translation for device /pcie@ffe09000/pcie@0/uli1575@0/isa@1e/rtc@70 ** OF: bus is isa (na=2, ns=1) on /pcie@ffe09000/pcie@0/uli1575@0/isa@1e OF: translating address: 00000001 00000070 OF: parent bus is default (na=3, ns=2) on /pcie@ffe09000/pcie@0/uli1575@0 OF: walking ranges... OF: ISA map, cp=0, s=1000, da=70 OF: parent translation for: 01000000 00000000 00000000 OF: with offset: 70 OF: one level translation: 00000000 00000000 00000070 OF: parent bus is pci (na=3, ns=2) on /pcie@ffe09000/pcie@0 OF: walking ranges... OF: default map, cp=a0000000, s=20000000, da=70 OF: default map, cp=0, s=10000, da=70 OF: parent translation for: 01000000 00000000 00000000 OF: with offset: 70 OF: one level translation: 01000000 00000000 00000070 OF: parent bus is pci (na=3, ns=2) on /pcie@ffe09000 OF: walking ranges... OF: PCI map, cp=0, s=10000, da=70 OF: parent translation for: 01000000 00000000 00000000 OF: with offset: 70 OF: one level translation: 01000000 00000000 00000070 OF: parent bus is default (na=2, ns=2) on / OF: walking ranges... OF: PCI map, cp=0, s=10000, da=70 OF: parent translation for: 00000000 ffc10000 OF: with offset: 70 OF: one level translation: 00000000 ffc10070 OF: reached root node With commit e38c0a1f in place, address translation fails: OF: ** translation for device /pcie@ffe09000/pcie@0/uli1575@0/isa@1e/rtc@70 ** OF: bus is isa (na=2, ns=1) on /pcie@ffe09000/pcie@0/uli1575@0/isa@1e OF: translating address: 00000001 00000070 OF: parent bus is default (na=3, ns=2) on /pcie@ffe09000/pcie@0/uli1575@0 OF: walking ranges... OF: ISA map, cp=0, s=1000, da=70 OF: parent translation for: 01000000 00000000 00000000 OF: with offset: 70 OF: one level translation: 00000000 00000000 00000070 OF: parent bus is pci (na=3, ns=2) on /pcie@ffe09000/pcie@0 OF: walking ranges... OF: default map, cp=a0000000, s=20000000, da=70 OF: default map, cp=0, s=10000, da=70 OF: not found ! Thierry Reding confirmed this commit was not needed after all: "We ended up merging a different address representation for Tegra PCIe and I've confirmed that reverting this commit doesn't cause any obvious regressions. I think all other drivers in drivers/pci/host ended up copying what we did on Tegra, so I wouldn't expect any other breakage either." There doesn't appear to be a simple way to support both behaviours, so reverting this as nothing should be depending on the new behaviour. Cc: stable@vger.kernel.org # v3.7+ Signed-off-by: Rob Herring <robh@kernel.org>
* Merge remote-tracking branch 'grant/devicetree/next' into for-nextRob Herring2013-11-071-5/+5
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| * of/irq: Rename of_irq_map_* functions to of_irq_parse_*Grant Likely2013-10-241-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The OF irq handling code has been overloading the term 'map' to refer to both parsing the data in the device tree and mapping it to the internal linux irq system. This is probably because the device tree does have the concept of an 'interrupt-map' function for translating interrupt references from one node to another, but 'map' is still confusing when the primary purpose of some of the functions are to parse the DT data. This patch renames all the of_irq_map_* functions to of_irq_parse_* which makes it clear that there is a difference between the parsing phase and the mapping phase. Kernel code can make use of just the parsing or just the mapping support as needed by the subsystem. The patch was generated mechanically with a handful of sed commands. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| * of: Fix dereferencing node name in debug output to be safeGrant Likely2013-10-151-3/+3
| | | | | | | | | | | | | | | | | | Several locations in the of_address and of_irq code dereference the full_name parameter from a device_node pointer without checking if the pointer is valid. This patch switches to use of_node_full_name() which always checks the pointer. Signed-off-by: Grant Likely <grant.likely@linaro.org>
* | of: implement pci_address_to_pio as weak functionRob Herring2013-10-101-0/+8
|/ | | | | | | | | | | | | | | | | Implement pci_address_to_pio as weak function to remove the dependency on asm/prom.h. This is in preparation to make prom.h optional. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: x86@kernel.org Cc: Grant Likely <grant.likely@linaro.org>
* Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linuxLinus Torvalds2013-07-051-2/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull device tree updates from Grant Likely: "This branch contains the following changes: - Removal of CONFIG_OF_DEVICE, it is always enabled by CONFIG_OF - Remove #ifdef from linux/of_platform.h to increase compiler syntax coverage - Bug fix for address decoding on Bimini and js2x powerpc platforms. - miscellaneous binding changes One note on the above. The binding changes going in from all kinds of different trees has gotten rather out of hand. I picked up some during this cycle, but even going though my tree isn't a great fit. Ian Campbell has prototyped splitting the bindings and .dtb files into a separate repository. The plan is to migrate to using that sometime in the next few kernel releases which should get rid of a lot of the churn on binding docs and .dts files" * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux: of: Fix address decoding on Bimini and js2x machines of: remove CONFIG_OF_DEVICE usb: chipidea: depend on CONFIG_OF instead of CONFIG_OF_DEVICE of: remove of_platform_driver ibmebus: convert of_platform_driver to platform_driver driver core: move to_platform_driver to platform_device.h mfd: DT bindings for the palmas family MFD ARM: dts: omap3-devkit8000: fix NAND memory binding of/base: fix typos of: remove #ifdef from linux/of_platform.h
| * of: Fix address decoding on Bimini and js2x machinesBenjamin Herrenschmidt2013-07-041-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit: e38c0a1fbc5803cbacdaac0557c70ac8ca5152e7 of/address: Handle #address-cells > 2 specially broke real time clock access on Bimini, js2x, and similar powerpc machines using the "maple" platform. That code was indirectly relying on the old (broken) behaviour of the translation for the hypertransport to ISA bridge. This fixes it by treating hypertransport as a PCI bus Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
* | of/pci: Provide support for parsing PCI DT ranges propertyAndrew Murray2013-05-191-0/+67
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch factors out common implementation patterns to reduce overall kernel code and provide a means for host bridge drivers to directly obtain struct resources from the DT's ranges property without relying on architecture specific DT handling. This will make it easier to write archiecture independent host bridge drivers and mitigate against further duplication of DT parsing code. This patch can be used in the following way: struct of_pci_range_parser parser; struct of_pci_range range; if (of_pci_range_parser_init(&parser, np)) ; //no ranges property for_each_of_pci_range(&parser, &range) { /* directly access properties of the address range, e.g.: range.pci_space, range.pci_addr, range.cpu_addr, range.size, range.flags alternatively obtain a struct resource, e.g.: struct resource res; of_pci_range_to_resource(&range, np, &res); */ } Additionally the implementation takes care of adjacent ranges and merges them into a single range (as was the case with powerpc and microblaze). Signed-off-by: Andrew Murray <Andrew.Murray@arm.com> Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: Rob Herring <rob.herring@calxeda.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
* of: fix spelling mistake in commentAndrew Murray2013-01-091-1/+1
| | | | | Signed-off-by: Andrew Murray <Andrew.Murray@arm.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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