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* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner2019-05-301-5/+1
| | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* powerpc/dma: trim the fat from <asm/dma-mapping.h>Christoph Hellwig2019-02-181-0/+1
| | | | | | | | | | There is no need to provide anything but get_arch_dma_ops to <linux/dma-mapping.h>. More the remaining declarations to <asm/iommu.h> and drop all the includes. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
* powerpc: use mm zones more sensiblyChristoph Hellwig2018-12-201-9/+0
| | | | | | | | | | | | | | | | | | | | Powerpc has somewhat odd usage where ZONE_DMA is used for all memory on common 64-bit configfs, and ZONE_DMA32 is used for 31-bit schemes. Move to a scheme closer to what other architectures use (and I dare to say the intent of the system): - ZONE_DMA: optionally for memory < 31-bit (64-bit embedded only) - ZONE_NORMAL: everything addressable by the kernel - ZONE_HIGHMEM: memory > 32-bit for 32-bit kernels Also provide information on how ZONE_DMA is used by defining ARCH_ZONE_DMA_BITS. Contains various fixes from Benjamin Herrenschmidt. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
* powerpc: Convert fsl_rstcr_restart to a reset handlerAndrey Smirnov2016-09-251-1/+0
| | | | | | | | | Convert fsl_rstcr_restart into a function to be registered with register_reset_handler(). Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> [scottwood: Converted mvme7100 as well] Signed-off-by: Scott Wood <oss@buserror.net>
* powerpc: Move 32-bit probe() machine to later in the boot processBenjamin Herrenschmidt2016-07-211-3/+1
| | | | | | | | | | | This converts all the 32-bit platforms to use the expanded device-tree which is a pretty mechanical change. Unlike 64-bit, the 32-bit kernel didn't rely on platform initializations to setup the MMU since it sets it up entirely before probe_machine() so the move has comparatively less consequences though it's a bigger patch. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
* powerpc/fsl-pci: Limit ZONE_DMA32 to 2GiB on 64-bit platformsScott Wood2014-09-031-0/+10
| | | | | | | | | | | FSL PCI cannot directly address the whole lower 4 GiB due to conflicts with PCICSRBAR and outbound windows. By the time max_direct_dma_addr is set to the precise limit, it will be too late to alter the zone limits, but we should always have at least 2 GiB mapped (unless RAM is smaller than that). Signed-off-by: Scott Wood <scottwood@freescale.com> Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
* fsl/pci: The new pci suspend/resume implementationWang Dongsheng2014-03-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | If we do nothing in suspend/resume, some platform PCIe ip-block can't guarantee the link back to L0 state from sleep, then, when we read the EP device will hang. Only we send pme turnoff message in pci controller suspend, and send pme exit message in resume, the link state will be normal. When we send pme turnoff message in pci controller suspend, the links will into l2/l3 ready, then, host cannot communicate with ep device, but pci-driver will call back EP device to save them state. So we need to change platform_driver->suspend/resume to syscore->suspend/resume. So the new suspend/resume implementation, send pme turnoff message in suspend, and send pme exit message in resume. And add a PME handler, to response PME & message interrupt. Change platform_driver->suspend/resume to syscore->suspend/resume. pci-driver will call back EP device, to save EP state in pci_pm_suspend_noirq, so we need to keep the link, until pci_pm_suspend_noirq finish. Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
* powerpc/e500/qemu-e500: enable coreintScott Wood2013-02-151-3/+4
| | | | | | | | The MPIC code will disable coreint if it detects an insufficient MPIC version. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/fsl-pci: Unify pci/pcie initialization codeJia Hongtao2012-09-121-2/+2
| | | | | | | | | | | | | | | | We unified the Freescale pci/pcie initialization by changing the fsl_pci to a platform driver. In previous PCI code architecture the initialization routine is called at board_setup_arch stage. Now the initialization is done in probe function which is architectural better. Also It's convenient for adding PM support for PCI controller in later patch. Now we registered pci controllers as platform devices. So we combine two initialization code as one platform driver. Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Chunhe Lan <Chunhe.Lan@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/swiotlb: Enable at early stage and disable if not necessaryJia Hongtao2012-09-121-0/+1
| | | | | | | | | | | | | | | | | Remove the dependency on PCI initialization for SWIOTLB initialization. So that PCI can be initialized at proper time. SWIOTLB is partly determined by PCI inbound/outbound map which is assigned in PCI initialization. But swiotlb_init() should be done at the stage of mem_init() which is much earlier than PCI initialization. So we reserve the memory for SWIOTLB first and free it if not necessary. All boards are converted to fit this change. Signed-off-by: Jia Hongtao <B38951@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com> Acked-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* powerpc/e500: add paravirt QEMU platformScott Wood2012-07-111-0/+72
This gives the kernel a paravirtualized machine to target, without requiring both sides to pretend to be targeting a specific board that likely has little to do with the host in KVM scenarios. This avoids the need to add new boards to QEMU just to be able to run KVM on new CPUs. As this is the first platform that can run with either e500v2 or e500mc, CONFIG_PPC_E500MC is now a legitimately user configurable option, so add a help text. Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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