On Sun, Nov 08, 2015 at 08:24:37PM -0800, Pramod Sudheendra wrote: >> On Nov 8, 2015, at 7:09 PM, Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx> wrote: >> On Thu, Nov 05, 2015 at 12:12:00AM +1100, Gavin Shan wrote: >>> This series of patches rebases on powerpc/next branch, plus below additional >>> patches: >>> >>> https://patchwork.ozlabs.org/patch/534804/ (PATCH[1/1] Andrew's EEH fix) >>> https://patchwork.ozlabs.org/patch/534154/ (PATCH[7/7] Richard's SRIOV Rework) >>> commit 3b0e21e Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux into next >>> >> >> As asked by Alexey, here is the repo on github: >> >> https://github.com/gwshan/pnv-pci-hotplug.git >Don’t see that link working. Yeah, I dropped that before it's populated completely as I was told it's disallowed by my employer. I have to push it into IBM internal git server and it's only visible to IBM. Sorry for the inconvienence... >> >>> The series of patches intend to support PCI slot for PowerPC PowerNV platform, >>> which is running on top of skiboot firmware. The patchset requires corresponding >>> changes from skiboot firmware, which is sent to skiboot@xxxxxxxxxxxxxxxx >>> for review. The PCI slots are exposed by skiboot with device node properties, >>> and kernel utilizes those properties to populated PCI slots accordingly. >>> >>> The original PCI infrastructure on PowerNV platform can't support hotplug >>> because the PE is assigned during PHB fixup time, which is called for once >>> during system boot time. For this, the PCI infrastructure on PowerNV platform >>> has been reworked for a lot. After that, the PE and its corresponding resources >>> (IODT, M32DT, M64 segments, DMA32 and bypass window) are assigned upon updating >>> PCI bridge's resources, which might decide PE# assigned to the PE (e.g. M64 >>> resources, on P8 strictly speaking). Each PE will maintain a reference count, >>> which is (number of child PCI devices + 1). That indicates when last child PCI >>> device leaves the PE, the PE and its included resources will be relased and put >>> back into free pool again. With this design, the PE will be released when EEH PE >>> is released. PATCH[1 - 27] are related to this part. >>> >>>> From skiboot perspective, PCI slot is providing (hot/fundamental/complete) >>> resets to EEH. The kernel gets to know if skiboot supports various reset on one >>> particular PCI slot through device-tree node. If it does, EEH will utilize the >>> functionality provided by skiboot. Besides, the device-tree nodes have to change >>> in order to support PCI hotplug. For example, when one PCI adapter inserted to >>> one slot, its device-tree node should be added to the system dynamically. Conversely, >>> the device-tree node should be removed from the system when the PCI adapter is going >>> to be offline. Since pci_dn and eeh_dev have same life cyle as PCI device nodes, >>> they should be added/removed accordingly during PCI hotplug. PATCH[28 - 43] are >>> doing the related work. >>> >>> The OF driver is changed to support unflattening FDT blob for sub-stree, which >>> is covered by PATCH[44 - 49]. >>> >>> The last one, PATCH[50], is the standalone PCI hotplug driver for PowerPC PowerNV >>> platform. >>> >>> Changelog >>> ========= >>> v7: >>> * Reworked revision to some extent. >>> * Rebased to powerpc/next repository. >>> * Reorder/split/merge/drop according - Alexey. >>> * Defined macros and use array to track IO/M32/M64/DMA32 segments - Alexey. >>> * Merged 3 files to one for the hotplug driver - Alexey. >>> * As part of OPAL API, defined macros for PCI slot power state, hotplug >>> message type. Defined macros for PCI slot power confirmed state in >>> hotplug driver. >>> * Misc comments from Alexey. >>> * Reworked unflatten_dt_node() to avoid recursive function calls. >>> * Use EXPORT_SYMBOL_GPL() and document function's input/output - Rob/Frank. >>> v6: >>> * Patch reorder, split, squash - Alexey. >>> * Minor coding style - Alexey. >>> * Better function names for pcibios_{add,remove}_pci_devices - Bjorn >>> * Replace pr_warn() with dev_warn() in PowerNV hotplug driver - Bjorn >>> * Concurrent depth as parameter passed to __unflatten_dt_node() - Grant / Alexey >>> * Replace overlay with of_changeset - Grant >>> v5: >>> * Rebased to 4.1.rc6 and some unmerged patches as below: >>> Alexey's DDW patchset (v11); >>> Gavin's EEH error injection support (in mpe's next branch); >>> Richard's EEH cleanup patches (in mpe's next branch); >>> Richard's EEH support for VF (v7); >>> Gavin's misc EEH fixes for 4.2; >>> * The revision bases on skiboot corresponding patches (v7): >>> https://patchwork.ozlabs.org/patch/480437/ >>> * Utilize OF overlay to update device-tree with help of newly introduced >>> OPAL API opal_get_overlay_dt(). >>> * Split patches for easy review according to aik's comments. >>> * Fix coding style from checkpatchc.pl as pointed by aik. >>> * Code cleanup and misc fixup according to aik's input. >>> v4: >>> * Rebased to 4.1.RC1 >>> * Added API to unflatten FDT blob to device node sub-tree, which is attached >>> the indicated parent device node. The original mechanism based on formatted >>> string stream has been dropped. >>> * The PATCH[v3 09/21] ("powerpc/eeh: Delay probing EEH device during hotplug") >>> was picked up sent to linux-ppc@ separately for review as Richard's "VF EEH >>> Support" depends on that. >>> v3: >>> * Rebased to 4.1.RC0 >>> * PowerNV PCI infrasturcture is total refactored in order to support PCI >>> hotplug. The PowerNV hotplug driver is also reworked a lot because of >>> the changes in skiboot in order to support PCI hotplug. >>> >>> Gavin Shan (50): >>> PCI: Add pcibios_setup_bridge() >>> powerpc/pci: Override pcibios_setup_bridge() >>> powerpc/pci: Cleanup on struct pci_controller_ops >>> powerpc/powernv: Cleanup on pnv_pci_ioda_controller_ops >>> powerpc/powernv: Drop pnv_ioda_setup_dev_PE() >>> powerpc/powernv: Drop phb->bdfn_to_pe() >>> powerpc/powernv: Reorder fields in struct pnv_phb >>> powerpc/powernv: Rename PE# fields in struct pnv_phb >>> powerpc/powernv: Fix initial IO and M32 segmap >>> powerpc/powernv: Simplify pnv_ioda_setup_pe_seg() >>> powerpc/powernv: IO and M32 mapping based on PCI device resources >>> powerpc/powernv: Track M64 segment consumption >>> powerpc/powernv: Rename M64 related functions >>> powerpc/powernv: M64 support on P7IOC >>> powerpc/powernv: Rename pnv_pci_ioda_setup_dma_pe() >>> powerpc/powernv: Define PNV_IODA1_DMA32_SEGSIZE >>> powerpc/powernv: Avoid calculating DMA32 segments on PHB3 >>> powerpc/powernv: Remove DMA32 PE list >>> powerpc/powernv: Track DMA32 segment consumption >>> powerpc/powernv: Improve DMA32 segment calculation >>> powerpc/powernv: Increase PE# capacity >>> powerpc/powernv: Introduce pnv_ioda_init_pe() >>> powerpc/powernv: Use PE instead of number during setup and release >>> powerpc/powernv: Allocate PE# in reverse order >>> powerpc/powernv: Reserve PE for root bus >>> powerpc/powernv: Create PEs at PCI hot plugging time >>> powerpc/powernv: Dynamically release PEs >>> powerpc/pci: Rename pcibios_{add,remove}_pci_devices() >>> powerpc/pci: Rename pcibios_find_pci_bus() >>> powerpc/pci: Move pci_find_bus_by_node() around >>> powerpc/pci: Export pci_add_device_node_info() >>> powerpc/pci: Introduce pci_remove_device_node_info() >>> powerpc/pci: Export pci_traverse_device_nodes() >>> powerpc/pci: Delay populating pdn >>> powerpc/pci: Don't scan empty slot >>> powerpc/pci: Update bridge windows on PCI plug >>> powerpc/powernv: Simplify pnv_eeh_reset() >>> powerpc/powernv: Exclude root bus in pnv_pci_reset_secondary_bus() >>> powerpc/powernv: Fundamental reset in pnv_pci_reset_secondary_bus() >>> powerpc/powernv: Support PCI slot ID >>> powerpc/powernv: Use firmware PCI slot reset infrastructure >>> powerpc/powernv: Functions to get/set PCI slot status >>> powerpc/powernv: Select OF_DYNAMIC >>> drivers/of: Split unflatten_dt_node() >>> drivers/of: Avoid recursively calling unflatten_dt_node() >>> drivers/of: Rename unflatten_dt_node() >>> drivers/of: Specify parent node in of_fdt_unflatten_tree() >>> drivers/of: Return allocated memory from of_fdt_unflatten_tree() >>> drivers/of: Export OF changeset functions >>> PCI/hotplug: PowerPC PowerNV PCI hotplug driver >>> >>> MAINTAINERS | 6 + >>> arch/powerpc/include/asm/eeh.h | 2 +- >>> arch/powerpc/include/asm/opal-api.h | 17 +- >>> arch/powerpc/include/asm/opal.h | 8 +- >>> arch/powerpc/include/asm/pci-bridge.h | 25 +- >>> arch/powerpc/include/asm/pnv-pci.h | 7 + >>> arch/powerpc/include/asm/ppc-pci.h | 8 +- >>> arch/powerpc/kernel/eeh_dev.c | 19 +- >>> arch/powerpc/kernel/eeh_driver.c | 12 +- >>> arch/powerpc/kernel/pci-common.c | 16 +- >>> arch/powerpc/kernel/pci-hotplug.c | 47 +- >>> arch/powerpc/kernel/pci_dn.c | 85 +- >>> arch/powerpc/platforms/maple/pci.c | 34 +- >>> arch/powerpc/platforms/pasemi/pci.c | 3 - >>> arch/powerpc/platforms/powermac/pci.c | 38 +- >>> arch/powerpc/platforms/powernv/Kconfig | 1 + >>> arch/powerpc/platforms/powernv/eeh-powernv.c | 173 ++-- >>> arch/powerpc/platforms/powernv/opal-wrappers.S | 4 + >>> arch/powerpc/platforms/powernv/pci-ioda.c | 1251 +++++++++++++++--------- >>> arch/powerpc/platforms/powernv/pci.c | 92 +- >>> arch/powerpc/platforms/powernv/pci.h | 62 +- >>> arch/powerpc/platforms/pseries/msi.c | 4 +- >>> arch/powerpc/platforms/pseries/pci_dlpar.c | 32 - >>> arch/powerpc/platforms/pseries/setup.c | 8 +- >>> drivers/of/dynamic.c | 65 +- >>> drivers/of/fdt.c | 378 ++++--- >>> drivers/of/of_private.h | 2 + >>> drivers/of/overlay.c | 8 +- >>> drivers/of/unittest.c | 6 +- >>> drivers/pci/hotplug/Kconfig | 12 + >>> drivers/pci/hotplug/Makefile | 3 + >>> drivers/pci/hotplug/pnv_php.c | 866 ++++++++++++++++ >>> drivers/pci/hotplug/rpadlpar_core.c | 8 +- >>> drivers/pci/hotplug/rpaphp_core.c | 4 +- >>> drivers/pci/hotplug/rpaphp_pci.c | 4 +- >>> drivers/pci/setup-bus.c | 5 + >>> include/linux/of_fdt.h | 5 +- >>> include/linux/pci.h | 1 + >>> 38 files changed, 2389 insertions(+), 932 deletions(-) >>> create mode 100644 drivers/pci/hotplug/pnv_php.c >>> >>> -- >>> 2.1.0 >>> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-pci" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
