| Commit message (Collapse) | Author | Age |
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rcar_pcie_get_resources() doesn't use the platform_device pointer passed to
it, so remove it. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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The rcar driver never uses the platform drvdata pointer, so don't bother
setting it. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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Use a local "struct device *dev" for brevity and consistency with other
drivers. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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Use the existing "np" pointer instead of looking up dev->of_node again. No
functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use a local "struct device *dev" for brevity and consistency with other
drivers. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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We know where the PCIe capability lives in the host bridge's config space;
in fact, we already hard-coded the offset of the Link Control 2 register.
The hard-coded Link Control 2 offset was 0xdc. Link Control 2 is at offset
0x30 into the PCIe capability, so the capability itself must be at
0xdc - 0x30 = 0xac.
Hard-code the PCIe capability offset, which means we don't have to search
for it and we can use the standard definitions for registers within the
capability.
No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The callers never pass a null "pcie" pointer (they check for kzalloc
failure), so we don't need to check here. The bus driver should never call
the probe function with a null ->dev pointer, so we don't need to check
that either. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Validate iproc_pcie->base for BCMA devices just like we already do for
platform devices in iproc_pcie_pltfm_probe(). No functional change
intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Set the drvdata pointer at the end of probe function for consistency with
other drivers. We don't need the drvdata until after the probe completes,
and we don't need it at all if the probe fails. No functional change
intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use a local "struct device *dev" for brevity and consistency with other
drivers. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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TLP_CFG_DW1() was only used with altera->root_bus_nr and RP_DEVFN, so
encode that directly into the macro so we don't have to clutter the uses
with the TLP_REQ_ID() usage. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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All TLP_CFG_DW0() uses follow the same pattern based on the root bus
number, so pull that into the macro itself to declutter the users. No
functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Rename altera_pcie_valid_config() to altera_pcie_valid_device().
No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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devm_ioremap_resource() fails gracefully when given a NULL resource
pointer, so we don't need to check separately for failure from
platform_get_resource_byname(). Remove the redundant check.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The altera driver never uses the platform drvdata pointer, so don't bother
setting it. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Use a local "struct device *dev" for brevity and consistency with other
drivers. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The aardvark driver never uses the platform drvdata pointer, so don't
bother setting it. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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Use a local "struct device *dev" for brevity and consistency with other
drivers. No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"Here is the crypto update for 4.9:
API:
- The crypto engine code now supports hashes.
Algorithms:
- Allow keys >= 2048 bits in FIPS mode for RSA.
Drivers:
- Memory overwrite fix for vmx ghash.
- Add support for building ARM sha1-neon in Thumb2 mode.
- Reenable ARM ghash-ce code by adding import/export.
- Reenable img-hash by adding import/export.
- Add support for multiple cores in omap-aes.
- Add little-endian support for sha1-powerpc.
- Add Cavium HWRNG driver for ThunderX SoC"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (137 commits)
crypto: caam - treat SGT address pointer as u64
crypto: ccp - Make syslog errors human-readable
crypto: ccp - clean up data structure
crypto: vmx - Ensure ghash-generic is enabled
crypto: testmgr - add guard to dst buffer for ahash_export
crypto: caam - Unmap region obtained by of_iomap
crypto: sha1-powerpc - little-endian support
crypto: gcm - Fix IV buffer size in crypto_gcm_setkey
crypto: vmx - Fix memory corruption caused by p8_ghash
crypto: ghash-generic - move common definitions to a new header file
crypto: caam - fix sg dump
hwrng: omap - Only fail if pm_runtime_get_sync returns < 0
crypto: omap-sham - shrink the internal buffer size
crypto: omap-sham - add support for export/import
crypto: omap-sham - convert driver logic to use sgs for data xmit
crypto: omap-sham - change the DMA threshold value to a define
crypto: omap-sham - add support functions for sg based data handling
crypto: omap-sham - rename sgl to sgl_tmp for deprecation
crypto: omap-sham - align algorithms on word offset
crypto: omap-sham - add context export/import stubs
...
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The newly added quirk_cavium_sriov_rnm_link doesn't compile if
PCI_ATS is off. This patch adds a check for PCI_ATS.
Fixes: 21b5b8eebbae ("PCI: quirk fixup for cavium invalid sriov...")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Cavium cn88xx hardware presents an incorrect SR-IOV Function
Dependency Link, add a fixup quirk for the affected devices.
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ananth Jasty <Ananth.Jasty@cavium.com>
Signed-off-by: Omer Khaliq <okhaliq@caviumnetworks.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights:
- Major rework of Book3S 64-bit exception vectors (Nicholas Piggin)
- Use gas sections for arranging exception vectors et. al.
- Large set of TM cleanups and selftests (Cyril Bur)
- Enable transactional memory (TM) lazily for userspace (Cyril Bur)
- Support for XZ compression in the zImage wrapper (Oliver
O'Halloran)
- Add support for bpf constant blinding (Naveen N. Rao)
- Beginnings of upstream support for PA Semi Nemo motherboards
(Darren Stevens)
Fixes:
- Ensure .mem(init|exit).text are within _stext/_etext (Michael
Ellerman)
- xmon: Don't use ld on 32-bit (Michael Ellerman)
- vdso64: Use double word compare on pointers (Anton Blanchard)
- powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui)
- powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy)
- powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K
(Aneesh Kumar K.V)
- Fix memory leak in queue_hotplug_event() error path (Andrew
Donnellan)
- Replay hypervisor maintenance interrupt first (Nicholas Piggin)
Various performance optimisations (Anton Blanchard):
- Align hot loops of memset() and backwards_memcpy()
- During context switch, check before setting mm_cpumask
- Remove static branch prediction in atomic{, 64}_add_unless
- Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little
endian
- Set default CPU type to POWER8 for little endian builds
Cleanups & features:
- Sparse fixes/cleanups (Daniel Axtens)
- Preserve CFAR value on SLB miss caused by access to bogus address
(Paul Mackerras)
- Radix MMU fixups for POWER9 (Aneesh Kumar K.V)
- Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU)
(Simon Guo)
- Optimise syscall entry for virtual, relocatable case (Nicholas
Piggin)
- Optimise MSR handling in exception handling (Nicholas Piggin)
- Support for kexec with Radix MMU (Benjamin Herrenschmidt)
- powernv EEH fixes (Russell Currey)
- Suprise PCI hotplug support for powernv (Gavin Shan)
- Endian/sparse fixes for powernv PCI (Gavin Shan)
- Defconfig updates (Anton Blanchard)
- KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh)
- cxl: Flush PSL cache before resetting the adapter (Frederic Barrat)
- cxl: replace loop with for_each_child_of_node(), remove unneeded
of_node_put() (Andrew Donnellan)
- Fix HV facility unavailable to use correct handler (Nicholas
Piggin)
- Remove unnecessary syscall trampoline (Nicholas Piggin)
- fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael
Ellerman)
- Quieten EEH message when no adapters are found (Anton Blanchard)
- powernv: Add PHB register dump debugfs handle (Russell Currey)
- Use kprobe blacklist for exception handlers & asm functions
(Nicholas Piggin)
- Document the syscall ABI (Nicholas Piggin)
- MAINTAINERS: Update cxl maintainers (Michael Neuling)
- powerpc: Remove all usages of NO_IRQ (Michael Ellerman)
Minor cleanups:
- Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur,
Frederic Barrat, Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng,
Simon Guo"
* tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits)
powerpc/bpf: Add support for bpf constant blinding
powerpc/bpf: Implement support for tail calls
powerpc/bpf: Introduce accessors for using the tmp local stack space
powerpc/fadump: Fix build break when CONFIG_PROC_VMCORE=n
powerpc: tm: Enable transactional memory (TM) lazily for userspace
powerpc/tm: Add TM Unavailable Exception
powerpc: Remove do_load_up_transact_{fpu,altivec}
powerpc: tm: Rename transct_(*) to ck(\1)_state
powerpc: tm: Always use fp_state and vr_state to store live registers
selftests/powerpc: Add checks for transactional VSXs in signal contexts
selftests/powerpc: Add checks for transactional VMXs in signal contexts
selftests/powerpc: Add checks for transactional FPUs in signal contexts
selftests/powerpc: Add checks for transactional GPRs in signal contexts
selftests/powerpc: Check that signals always get delivered
selftests/powerpc: Add TM tcheck helpers in C
selftests/powerpc: Allow tests to extend their kill timeout
selftests/powerpc: Introduce GPR asm helper header file
selftests/powerpc: Move VMX stack frame macros to header file
selftests/powerpc: Rework FPU stack placement macros and move to header file
selftests/powerpc: Check for VSX preservation across userspace preemption
...
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This replaces of_get_property() with of_property_read_u32() or
of_property_read_string() so that we needn't consider the endian
issue, the returned value always is in CPU-endian.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
[mpe: Fold in the change to the "ibm,slot-surprise-pluggable" case]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This supports PCI surprise hotplug. The design is highlighted as
below:
* The PCI slot's surprise hotplug capability is exposed through
device node property "ibm,slot-surprise-pluggable", meaning
PCI surprise hotplug will be disabled if skiboot doesn't support
it yet.
* The interrupt because of presence or link state change is raised
on surprise hotplug event. One event is allocated and queued to
the PCI slot for workqueue to pick it up and process in serialized
fashion. The code flow for surprise hotplug is same to that for
managed hotplug except: the affected PEs are put into frozen state
to avoid unexpected EEH error reporting in surprise hot remove path.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This removes likely() and unlikely() in pnv_php.c as the code isn't
running in hot path. Those macros to affect CPU's branch stream don't
help a lot for performance. I used them to identify the cases are
likely or unlikely to happen. No logical changes introduced.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Summary of PCI changes for the v4.9 merge window:
Enumeration:
- microblaze: Add multidomain support for procfs (Bharat Kumar Gogada)
Resource management:
- Ignore requested alignment for PROBE_ONLY and fixed resources (Yongji Xie)
- Ignore requested alignment for VF BARs (Yongji Xie)
PCI device hotplug:
- Make core explicitly non-modular (Paul Gortmaker)
PCIe native device hotplug:
- Rename pcie_isr() locals for clarity (Bjorn Helgaas)
- Return IRQ_NONE when we can't read interrupt status (Bjorn Helgaas)
- Remove unnecessary guard (Bjorn Helgaas)
- Clean up dmesg "Slot(%s)" messages (Bjorn Helgaas)
- Remove useless pciehp_get_latch_status() calls (Bjorn Helgaas)
- Clear attention LED on device add (Keith Busch)
- Allow exclusive userspace control of indicators (Keith Busch)
- Process all hotplug events before looking for new ones (Mayurkumar Patel)
- Don't re-read Slot Status when queuing hotplug event (Mayurkumar Patel)
- Don't re-read Slot Status when handling surprise event (Mayurkumar Patel)
- Make explicitly non-modular (Paul Gortmaker)
Power management:
- Afford direct-complete to devices with non-standard PM (Lukas Wunner)
- Query platform firmware for device power state (Lukas Wunner)
- Recognize D3cold in pci_update_current_state() (Lukas Wunner)
- Avoid unnecessary resume after direct-complete (Lukas Wunner)
- Make explicitly non-modular (Paul Gortmaker)
Virtualization:
- Mark Atheros AR9580 to avoid bus reset (Maik Broemme)
- Check for pci_setup_device() failure in pci_iov_add_virtfn() (Po Liu)
MSI:
- Enable PCI_MSI_IRQ_DOMAIN support for ARC (Joao Pinto)
AER:
- Remove aerdriver.nosourceid kernel parameter (Bjorn Helgaas)
- Remove aerdriver.forceload kernel parameter (Bjorn Helgaas)
- Fix aer_probe() kernel-doc comment (Cao jin)
- Add bus flag to skip source ID matching (Jon Derrick)
- Avoid memory allocation in interrupt handling path (Jon Derrick)
- Cache capability position (Keith Busch)
- Make explicitly non-modular (Paul Gortmaker)
- Remove duplicate AER severity translation (Tyler Baicar)
- Send correct severity to calculate AER severity (Tyler Baicar)
Precision Time Measurement:
- Add Precision Time Measurement (PTM) support (Jonathan Yong)
- Add PTM clock granularity information (Bjorn Helgaas)
- Add pci_enable_ptm() for drivers to enable PTM on endpoints (Bjorn Helgaas)
Generic host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Make explicitly non-modular (Paul Gortmaker)
Altera host bridge driver:
- Remove redundant platform_get_resource() return value check (Bjorn Helgaas)
- Poll for link training status after retraining the link (Ley Foon Tan)
- Rework config accessors for use without a struct pci_bus (Ley Foon Tan)
- Move retrain from fixup to altera_pcie_host_init() (Ley Foon Tan)
- Make MSI explicitly non-modular (Paul Gortmaker)
- Make explicitly non-modular (Paul Gortmaker)
- Relax device number checking to allow SR-IOV (Po Liu)
ARM Versatile host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
Axis ARTPEC-6 host bridge driver:
- Drop __init from artpec6_add_pcie_port() (Niklas Cassel)
Freescale i.MX6 host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
Intel VMD host bridge driver:
- Add quirk for AER to ignore source ID (Jon Derrick)
- Allocate IRQ lists with correct MSI-X count (Jon Derrick)
- Convert to use pci_alloc_irq_vectors() API (Jon Derrick)
- Eliminate vmd_vector member from list type (Jon Derrick)
- Eliminate index member from IRQ list (Jon Derrick)
- Synchronize with RCU freeing MSI IRQ descs (Keith Busch)
- Request userspace control of PCIe hotplug indicators (Keith Busch)
- Move VMD driver to drivers/pci/host (Keith Busch)
Marvell Aardvark host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Remove redundant dev_err call in advk_pcie_probe() (Wei Yongjun)
Microsoft Hyper-V host bridge driver:
- Use zero-length array in struct pci_packet (Dexuan Cui)
- Use pci_function_description[0] in struct definitions (Dexuan Cui)
- Remove the unused 'wrk' in struct hv_pcibus_device (Dexuan Cui)
- Handle vmbus_sendpacket() failure in hv_compose_msi_msg() (Dexuan Cui)
- Handle hv_pci_generic_compl() error case (Dexuan Cui)
- Use list_move_tail() instead of list_del() + list_add_tail() (Wei Yongjun)
NVIDIA Tegra host bridge driver:
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Remove redundant _data suffix (Thierry Reding)
- Use of_device_get_match_data() (Thierry Reding)
Qualcomm host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
Renesas R-Car host bridge driver:
- Consolidate register space lookup and ioremap (Bjorn Helgaas)
- Don't disable/unprepare clocks on prepare/enable failure (Geert Uytterhoeven)
- Add multi-MSI support (Grigory Kletsko)
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Fix some checkpatch warnings (Sergei Shtylyov)
- Try increasing PCIe link speed to 5 GT/s at boot (Sergei Shtylyov)
Rockchip host bridge driver:
- Add DT bindings for Rockchip PCIe controller (Shawn Lin)
- Add Rockchip PCIe controller support (Shawn Lin)
- Improve the deassert sequence of four reset pins (Shawn Lin)
- Fix wrong transmitted FTS count (Shawn Lin)
- Increase the Max Credit update interval (Rajat Jain)
Samsung Exynos host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
ST Microelectronics SPEAr13xx host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
Synopsys DesignWare host bridge driver:
- Return data directly from dw_pcie_readl_rc() (Bjorn Helgaas)
- Exchange viewport of `MEMORYs' and `CFGs/IOs' (Dong Bo)
- Check LTSSM training bit before deciding link is up (Jisheng Zhang)
- Move link wait definitions to .c file (Joao Pinto)
- Wait for iATU enable (Joao Pinto)
- Add iATU Unroll feature (Joao Pinto)
- Fix pci_remap_iospace() failure path (Lorenzo Pieralisi)
- Make explicitly non-modular (Paul Gortmaker)
- Relax device number checking to allow SR-IOV (Po Liu)
- Keep viewport fixed for IO transaction if num_viewport > 2 (Pratyush Anand)
- Remove redundant platform_get_resource() return value check (Wei Yongjun)
TI DRA7xx host bridge driver:
- Make explicitly non-modular (Paul Gortmaker)
TI Keystone host bridge driver:
- Propagate request_irq() failure (Wei Yongjun)
Xilinx AXI host bridge driver:
- Keep both legacy and MSI interrupt domain references (Bharat Kumar Gogada)
- Clear interrupt register for invalid interrupt (Bharat Kumar Gogada)
- Clear correct MSI set bit (Bharat Kumar Gogada)
- Dispose of MSI virtual IRQ (Bharat Kumar Gogada)
- Make explicitly non-modular (Paul Gortmaker)
- Relax device number checking to allow SR-IOV (Po Liu)
Xilinx NWL host bridge driver:
- Expand error logging (Bharat Kumar Gogada)
- Enable all MSI interrupts using MSI mask (Bharat Kumar Gogada)
- Make explicitly non-modular (Paul Gortmaker)
Miscellaneous:
- Drop CONFIG_KEXEC_CORE ifdeffery (Lukas Wunner)
- portdrv: Make explicitly non-modular (Paul Gortmaker)
- Make DPC explicitly non-modular (Paul Gortmaker)"
* tag 'pci-v4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (105 commits)
x86/PCI: VMD: Move VMD driver to drivers/pci/host
PCI: rockchip: Fix wrong transmitted FTS count
PCI: rockchip: Improve the deassert sequence of four reset pins
PCI: rockchip: Increase the Max Credit update interval
PCI: rcar: Try increasing PCIe link speed to 5 GT/s at boot
PCI/AER: Fix aer_probe() kernel-doc comment
PCI: Ignore requested alignment for VF BARs
PCI: Ignore requested alignment for PROBE_ONLY and fixed resources
PCI: Avoid unnecessary resume after direct-complete
PCI: Recognize D3cold in pci_update_current_state()
PCI: Query platform firmware for device power state
PCI: Afford direct-complete to devices with non-standard PM
PCI/AER: Cache capability position
PCI/AER: Avoid memory allocation in interrupt handling path
x86/PCI: VMD: Request userspace control of PCIe hotplug indicators
PCI: pciehp: Allow exclusive userspace control of indicators
ACPI / APEI: Send correct severity to calculate AER severity
PCI/AER: Remove duplicate AER severity translation
x86/PCI: VMD: Synchronize with RCU freeing MSI IRQ descs
x86/PCI: VMD: Eliminate index member from IRQ list
...
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* pci/host-vmd:
x86/PCI: VMD: Move VMD driver to drivers/pci/host
x86/PCI: VMD: Synchronize with RCU freeing MSI IRQ descs
x86/PCI: VMD: Eliminate index member from IRQ list
x86/PCI: VMD: Eliminate vmd_vector member from list type
x86/PCI: VMD: Convert to use pci_alloc_irq_vectors() API
x86/PCI: VMD: Allocate IRQ lists with correct MSI-X count
PCI: Use positive flags in pci_alloc_irq_vectors()
PCI: Update "pci=resource_alignment" documentation
Conflicts:
drivers/pci/host/Kconfig
drivers/pci/host/Makefile
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Move the driver source and Kconfig to the PCI host bridge drivers directory
and move the config option to a more appropriate sub-menu instead of
occupying the top-level location.
Update the Kconfig option with the X86_64 dependency that was implicitly
included from the previous location, and add information about the module
name when built as a loadable module.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Jon Derrick <jonathan.derrick@intel.com>
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'pci/host-designware', 'pci/host-hv', 'pci/host-keystone', 'pci/host-rcar', 'pci/host-rockchip', 'pci/host-tegra' and 'pci/host-xilinx' into next
* pci/host-aardvark:
PCI: aardvark: Remove redundant dev_err call in advk_pcie_probe()
* pci/host-altera:
PCI: altera: Remove redundant platform_get_resource() return value check
PCI: altera: Move retrain from fixup to altera_pcie_host_init()
PCI: altera: Rework config accessors for use without a struct pci_bus
PCI: altera: Poll for link training status after retraining the link
* pci/host-artpec:
PCI: artpec6: Drop __init from artpec6_add_pcie_port()
* pci/host-designware:
PCI: designware: Remove redundant platform_get_resource() return value check
PCI: designware: Exchange viewport of `MEMORYs' and `CFGs/IOs'
PCI: designware: Keep viewport fixed for IO transaction if num_viewport > 2
PCI: designware: Check LTSSM training bit before deciding link is up
PCI: designware: Add iATU Unroll feature
PCI: designware: Wait for iATU enable
PCI: designware: Move link wait definitions to .c file
PCI: designware: Return data directly from dw_pcie_readl_rc()
* pci/host-hv:
PCI: hv: Handle hv_pci_generic_compl() error case
PCI: hv: Handle vmbus_sendpacket() failure in hv_compose_msi_msg()
PCI: hv: Remove the unused 'wrk' in struct hv_pcibus_device
PCI: hv: Use pci_function_description[0] in struct definitions
PCI: hv: Use zero-length array in struct pci_packet
PCI: hv: Use list_move_tail() instead of list_del() + list_add_tail()
* pci/host-keystone:
PCI: keystone: Propagate request_irq() failure
* pci/host-rcar:
PCI: rcar: Try increasing PCIe link speed to 5 GT/s at boot
PCI: rcar: Fix some checkpatch warnings
PCI: rcar: Add multi-MSI support
PCI: rcar: Don't disable/unprepare clocks on prepare/enable failure
PCI: rcar: Consolidate register space lookup and ioremap
* pci/host-rockchip:
PCI: rockchip: Fix wrong transmitted FTS count
PCI: rockchip: Improve the deassert sequence of four reset pins
PCI: rockchip: Increase the Max Credit update interval
PCI: rockchip: Add Rockchip PCIe controller support
dt-bindings: PCI: rockchip: Add DT bindings for Rockchip PCIe controller
* pci/host-tegra:
PCI: tegra: Use of_device_get_match_data()
PCI: tegra: Remove redundant _data suffix
* pci/host-xilinx:
microblaze/PCI: Add multidomain support for procfs
PCI: xilinx: Dispose of MSI virtual IRQ
PCI: xilinx: Clear correct MSI set bit
PCI: xilinx: Clear interrupt register for invalid interrupt
PCI: xilinx: Keep both legacy and MSI interrupt domain references
PCI: xilinx-nwl: Enable all MSI interrupts using MSI mask
PCI: xilinx-nwl: Expand error logging
Conflicts:
drivers/pci/host/pcie-xilinx.c
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Dispose of virtual IRQ being created for MSI interrupts.
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
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Kernel provides virtual IRQ number at teardown. Get hwirq number from
virtual IRQ and clear correct MSI set bit.
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
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The interrupt decode register is not being cleared if an invalid interrupt
arises. Clear the decode register in this case.
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
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When built with MSI support, the legacy domain reference was being
overwritten with MSI.
Create two separate domains for MSI and legacy interrupts.
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
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The current mask enables and allows only one MSI interrupt on each MSI
line. Enable all MSI interrupts, which will also support Endpoints with
multi-MSI support.
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The current driver logs PCIe core errors. Add logging for individual core
events.
[bhelgaas: changelog]
Signed-off-by: Bharat Kumar Gogada <bharatku@xilinx.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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of_device_get_match_data() was added in v4.2 to reduce the the boilerplate
required to get at SoC-specific data. Use it to simplify the code
slightly.
[bhelgaas: changelog]
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The struct tegra_pcie_soc_data represents SoC-specific data. The shorter
name tegra_pcie_soc already describes that accurately enough, so the extra
five characters are redundant. Also remove the suffix from various
variable names to shorten the code a little.
This also makes this driver more consistent with the naming used in other
drivers that use a similar mechanism to differentiate between various SoC
generations.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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If the expected number of FTS aren't received by RC when exiting from L0s,
the LTSSM will fall into recover state, which means it will need to send TS
for retraining which makes the latency of exiting from L0s a little longer
than expected. This issue is caused by an incorrect reset value of FTS
count on PLC1 register (offset 0x4). The expected value for Gen1/2 should
be more than 240 and we may leave a little margin here. Fix this before
starting Gen1 training which will make TS1 contain the correct FTS count.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Per TRM, we need to deassert the four reset pins simultaneously. Currently
the reset framework doesn't support that so we did it one by one. It seems
no side effect found but it does impact the state machine of controller, so
sometimes the change speed bit is not set when sending training sequence
from recover state. After the silicon RTL review from SoC guys, we don't
need to do the sequence recommended by TRM, and could just move the
deassert of mgmt_sticky_rst to the first place.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Increase the likelihood of link state to automatically go to L1 and save
some power.
The default credit update interval of 7.5 us results in the rootport
sending UpdateFC-P and UpdateFC-NP packets too often, thus resulting in the
link never going to L1, and always staying in L0/L0s. The value 24 us was
chosen after some experiments and peeking over the PCIe bus to see that we
do enter L1 substate when there is not enough traffic on the PCIe bus.
Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
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Add support for the Rockchip PCIe controller found on RK3399 SoC platform.
[bhelgaas: fold in Brian's rockchip_pcie_client_irq_handler() OR fix, other
fixes and cleanups from Guenter Roeck <linux@roeck-us.net> and me,
uninitialized variable fix from Arnd Bergmann <arnd@arndb.de>]
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
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The PCIe link speed is initially set to 2.5 GT/s. Try to increase the link
speed to 5 GT/s.
Based on original patch by Grigory Kletsko
<grigory.kletsko@cogentembedded.com>.
[bhelgaas: remove "Trying speed up" message, remove unused SPCHG]
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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The R-Car PCIe driver causes 13 warnings from scripts/checkpatch.pl --
let's fix at least 10 easier ones:
- line over 80 characters;
- blank line missing after declarations;
- statements not starting on a tabstop.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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Implement the MSI .setup_irqs() method which enables allocation of several
MSIs at once.
[Sergei Shtylyov: removed unrelated/unneeded changes, fixed too long lines,
reordered the variable declarations, reworded the summary/description.]
Signed-off-by: Grigory Kletsko <grigory.kletsko@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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If clk_prepare_enable() fails, we must not call clk_disable_unprepare() in
the error path.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Move the devm_ioremap_resource() of R-Car register space next to the
of_address_to_resource() that extracts the resource. No functional change
intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
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Previously, if request_irq() failed, ks_add_pcie_port() always returned
zero (success). Return the request_irq() failure result instead.
[bhelgaas: changelog]
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Murali Karicheri <m-karicheri2@ti.com>
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'completion_status' is used in some places, e.g.,
hv_pci_protocol_negotiation(), so we should make sure it's initialized in
error case too, though the error is unlikely here.
[bhelgaas: fix changelog typo and nearby whitespace]
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
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Handle vmbus_sendpacket() failure in hv_compose_msi_msg().
I happened to find this when reading the code. I didn't get a real issue
however.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
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Remove the unused 'wrk' member in struct hv_pcibus_device.
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: KY Srinivasan <kys@microsoft.com>
CC: Jake Oshins <jakeo@microsoft.com>
CC: Haiyang Zhang <haiyangz@microsoft.com>
CC: Vitaly Kuznetsov <vkuznets@redhat.com>
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