Commit Graph

928 Commits

Author SHA1 Message Date
Brijesh Singh 059e5c321a x86/msr: Rename MSR_K8_SYSCFG to MSR_AMD64_SYSCFG
The SYSCFG MSR continued being updated beyond the K8 family; drop the K8
name from it.

Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Joerg Roedel <jroedel@suse.de>
Link: https://lkml.kernel.org/r/20210427111636.1207-4-brijesh.singh@amd.com
2021-05-10 07:51:38 +02:00
Linus Torvalds 57151b502c pci-v5.13-changes
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Merge tag 'pci-v5.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci updates from Bjorn Helgaas:
 "Enumeration:
   - Release OF node when pci_scan_device() fails (Dmitry Baryshkov)
   - Add pci_disable_parity() (Bjorn Helgaas)
   - Disable Mellanox Tavor parity reporting (Heiner Kallweit)
   - Disable N2100 r8169 parity reporting (Heiner Kallweit)
   - Fix RCiEP device to RCEC association (Qiuxu Zhuo)
   - Convert sysfs "config", "rom", "reset", "label", "index",
     "acpi_index" to static attributes to help fix races in device
     enumeration (Krzysztof Wilczyński)
   - Convert sysfs "vpd" to static attribute (Heiner Kallweit, Krzysztof
     Wilczyński)
   - Use sysfs_emit() in "show" functions (Krzysztof Wilczyński)
   - Remove unused alloc_pci_root_info() return value (Krzysztof
     Wilczyński)

  PCI device hotplug:
   - Fix acpiphp reference count leak (Feilong Lin)

  Power management:
   - Fix acpi_pci_set_power_state() debug message (Rafael J. Wysocki)
   - Fix runtime PM imbalance (Dinghao Liu)

  Virtualization:
   - Increase delay after FLR to work around Intel DC P4510 NVMe erratum
     (Raphael Norwitz)

  MSI:
   - Convert rcar, tegra, xilinx to MSI domains (Marc Zyngier)
   - For rcar, xilinx, use controller address as MSI doorbell (Marc
     Zyngier)
   - Remove unused hv msi_controller struct (Marc Zyngier)
   - Remove unused PCI core msi_controller support (Marc Zyngier)
   - Remove struct msi_controller altogether (Marc Zyngier)
   - Remove unused default_teardown_msi_irqs() (Marc Zyngier)
   - Let host bridges declare their reliance on MSI domains (Marc
     Zyngier)
   - Make pci_host_common_probe() declare its reliance on MSI domains
     (Marc Zyngier)
   - Advertise mediatek lack of built-in MSI handling (Thomas Gleixner)
   - Document ways of ending up with NO_MSI (Marc Zyngier)
   - Refactor HT advertising of NO_MSI flag (Marc Zyngier)

  VPD:
   - Remove obsolete Broadcom NIC VPD length-limiting quirk (Heiner
     Kallweit)
   - Remove sysfs VPD size checking dead code (Heiner Kallweit)
   - Convert VPF sysfs file to static attribute (Heiner Kallweit)
   - Remove unnecessary pci_set_vpd_size() (Heiner Kallweit)
   - Tone down "missing VPD" message (Heiner Kallweit)

  Endpoint framework:
   - Fix NULL pointer dereference when epc_features not implemented
     (Shradha Todi)
   - Add missing destroy_workqueue() in endpoint test (Yang Yingliang)

  Amazon Annapurna Labs PCIe controller driver:
   - Fix compile testing without CONFIG_PCI_ECAM (Arnd Bergmann)
   - Fix "no symbols" warnings when compile testing with
     CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann)

  APM X-Gene PCIe controller driver:
   - Fix cfg resource mapping regression (Dejin Zheng)

  Broadcom iProc PCIe controller driver:
   - Return zero for success of iproc_msi_irq_domain_alloc() (Pali
     Rohár)

  Broadcom STB PCIe controller driver:
   - Add reset_control_rearm() stub for !CONFIG_RESET_CONTROLLER (Jim
     Quinlan)
   - Fix use of BCM7216 reset controller (Jim Quinlan)
   - Use reset/rearm for Broadcom STB pulse reset instead of
     deassert/assert (Jim Quinlan)
   - Fix brcm_pcie_probe() error return for unsupported revision (Wei
     Yongjun)

  Cavium ThunderX PCIe controller driver:
   - Fix compile testing (Arnd Bergmann)
   - Fix "no symbols" warnings when compile testing with
     CONFIG_TRIM_UNUSED_KSYMS (Arnd Bergmann)

  Freescale Layerscape PCIe controller driver:
   - Fix ls_pcie_ep_probe() syntax error (comma for semicolon)
     (Krzysztof Wilczyński)
   - Remove layerscape-gen4 dependencies on OF and ARM64, add dependency
     on ARCH_LAYERSCAPE (Geert Uytterhoeven)

  HiSilicon HIP PCIe controller driver:
   - Remove obsolete HiSilicon PCIe DT description (Dongdong Liu)

  Intel Gateway PCIe controller driver:
   - Remove unused pcie_app_rd() (Jiapeng Chong)

  Intel VMD host bridge driver:
   - Program IRTE with Requester ID of VMD endpoint, not child device
     (Jon Derrick)
   - Disable VMD MSI-X remapping when possible so children can use more
     MSI-X vectors (Jon Derrick)

  MediaTek PCIe controller driver:
   - Configure FC and FTS for functions other than 0 (Ryder Lee)
   - Add YAML schema for MediaTek (Jianjun Wang)
   - Export pci_pio_to_address() for module use (Jianjun Wang)
   - Add MediaTek MT8192 PCIe controller driver (Jianjun Wang)
   - Add MediaTek MT8192 INTx support (Jianjun Wang)
   - Add MediaTek MT8192 MSI support (Jianjun Wang)
   - Add MediaTek MT8192 system power management support (Jianjun Wang)
   - Add missing MODULE_DEVICE_TABLE (Qiheng Lin)

  Microchip PolarFlare PCIe controller driver:
   - Make several symbols static (Wei Yongjun)

  NVIDIA Tegra PCIe controller driver:
   - Add MCFG quirks for Tegra194 ECAM errata (Vidya Sagar)
   - Make several symbols const (Rikard Falkeborn)
   - Fix Kconfig host/endpoint typo (Wesley Sheng)

  SiFive FU740 PCIe controller driver:
   - Add pcie_aux clock to prci driver (Greentime Hu)
   - Use reset-simple in prci driver for PCIe (Greentime Hu)
   - Add SiFive FU740 PCIe host controller driver and DT binding (Paul
     Walmsley, Greentime Hu)

  Synopsys DesignWare PCIe controller driver:
   - Move MSI Receiver init to dw_pcie_host_init() so it is
     re-initialized along with the RC in resume (Jisheng Zhang)
   - Move iATU detection earlier to fix regression (Hou Zhiqiang)

  TI J721E PCIe driver:
   - Add DT binding and TI j721e support for refclk to PCIe connector
     (Kishon Vijay Abraham I)
   - Add host mode and endpoint mode DT bindings for TI AM64 SoC (Kishon
     Vijay Abraham I)

  TI Keystone PCIe controller driver:
   - Use generic config accessors for TI AM65x (K3) to fix regression
     (Kishon Vijay Abraham I)

  Xilinx NWL PCIe controller driver:
   - Add support for coherent PCIe DMA traffic using CCI (Bharat Kumar
     Gogada)
   - Add optional "dma-coherent" DT property (Bharat Kumar Gogada)

  Miscellaneous:
   - Fix kernel-doc warnings (Krzysztof Wilczyński)
   - Remove unused MicroGate SyncLink device IDs (Jiri Slaby)
   - Remove redundant dev_err() for devm_ioremap_resource() failure
     (Chen Hui)
   - Remove redundant initialization (Colin Ian King)
   - Drop redundant dev_err() for platform_get_irq() errors (Krzysztof
     Wilczyński)"

* tag 'pci-v5.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (98 commits)
  riscv: dts: Add PCIe support for the SiFive FU740-C000 SoC
  PCI: fu740: Add SiFive FU740 PCIe host controller driver
  dt-bindings: PCI: Add SiFive FU740 PCIe host controller
  MAINTAINERS: Add maintainers for SiFive FU740 PCIe driver
  clk: sifive: Use reset-simple in prci driver for PCIe driver
  clk: sifive: Add pcie_aux clock in prci driver for PCIe driver
  PCI: brcmstb: Use reset/rearm instead of deassert/assert
  ata: ahci_brcm: Fix use of BCM7216 reset controller
  reset: add missing empty function reset_control_rearm()
  PCI: Allow VPD access for QLogic ISP2722
  PCI/VPD: Add helper pci_get_func0_dev()
  PCI/VPD: Remove pci_vpd_find_tag() SRDT handling
  PCI/VPD: Remove pci_vpd_find_tag() 'offset' argument
  PCI/VPD: Change pci_vpd_init() return type to void
  PCI/VPD: Make missing VPD message less alarming
  PCI/VPD: Remove pci_set_vpd_size()
  x86/PCI: Remove unused alloc_pci_root_info() return value
  MAINTAINERS: Add Jianjun Wang as MediaTek PCI co-maintainer
  PCI: mediatek-gen3: Add system PM support
  PCI: mediatek-gen3: Add MSI support
  ...
2021-05-05 13:24:11 -07:00
Krzysztof Wilczyński ccd61f07d2 x86/PCI: Remove unused alloc_pci_root_info() return value
The "info" value returned from alloc_pci_root_info() is never used, so drop
it.

[bhelgaas: commit log]
Addresses-Coverity-ID: 1222153 ("Unused value")
Link: https://lore.kernel.org/r/20210420210913.1137116-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-04-30 14:08:28 -05:00
Ingo Molnar d9f6e12fb0 x86: Fix various typos in comments
Fix ~144 single-word typos in arch/x86/ code comments.

Doing this in a single commit should reduce the churn.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-kernel@vger.kernel.org
2021-03-18 15:31:53 +01:00
Linus Torvalds c4fbde84fe Simple Firmware Interface (SFI) support removal for v5.12-rc1
Drop support for depercated platforms using SFI, drop the entire
 support for SFI that has been long deprecated too and make some
 janitorial changes on top of that (Andy Shevchenko).
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Merge tag 'sfi-removal-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull Simple Firmware Interface (SFI) support removal from Rafael Wysocki:
 "Drop support for depercated platforms using SFI, drop the entire
  support for SFI that has been long deprecated too and make some
  janitorial changes on top of that (Andy Shevchenko)"

* tag 'sfi-removal-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  x86/platform/intel-mid: Update Copyright year and drop file names
  x86/platform/intel-mid: Remove unused header inclusion in intel-mid.h
  x86/platform/intel-mid: Drop unused __intel_mid_cpu_chip and Co.
  x86/platform/intel-mid: Get rid of intel_scu_ipc_legacy.h
  x86/PCI: Describe @reg for type1_access_ok()
  x86/PCI: Get rid of custom x86 model comparison
  sfi: Remove framework for deprecated firmware
  cpufreq: sfi-cpufreq: Remove driver for deprecated firmware
  media: atomisp: Remove unused header
  mfd: intel_msic: Remove driver for deprecated platform
  x86/apb_timer: Remove driver for deprecated platform
  x86/platform/intel-mid: Remove unused leftovers (vRTC)
  x86/platform/intel-mid: Remove unused leftovers (msic)
  x86/platform/intel-mid: Remove unused leftovers (msic_thermal)
  x86/platform/intel-mid: Remove unused leftovers (msic_power_btn)
  x86/platform/intel-mid: Remove unused leftovers (msic_gpio)
  x86/platform/intel-mid: Remove unused leftovers (msic_battery)
  x86/platform/intel-mid: Remove unused leftovers (msic_ocd)
  x86/platform/intel-mid: Remove unused leftovers (msic_audio)
  platform/x86: intel_scu_wdt: Drop mistakenly added const
2021-02-24 10:35:29 -08:00
Andy Shevchenko 24c92537cc x86/PCI: Describe @reg for type1_access_ok()
Describe missed parameter in documentation of type1_access_ok().
Otherwise "make W=1 arch/x86/pci/" produces the following warning:
  CHECK   arch/x86/pci/intel_mid_pci.c
  CC      arch/x86/pci/intel_mid_pci.o
  arch/x86/pci/intel_mid_pci.c:152: warning: Function parameter or member 'reg' not described in 'type1_access_ok'

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-15 20:10:30 +01:00
Andy Shevchenko 3cc00862a5 x86/PCI: Get rid of custom x86 model comparison
Switch the platform code to use x86_id_table and accompanying API
instead of custom comparison against x86 CPU model.

This is one of the last users of custom API for that and following
changes will remove it for the good.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-15 20:10:30 +01:00
Andy Shevchenko 4590d98f5a sfi: Remove framework for deprecated firmware
SFI-based platforms are gone. So does this framework.

This removes mention of SFI through the drivers and other code as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-02-15 20:09:46 +01:00
Thomas Gleixner 70245f86c1 x86/pci: Create PCI/MSI irqdomain after x86_init.pci.arch_init()
Invoking x86_init.irqs.create_pci_msi_domain() before
x86_init.pci.arch_init() breaks XEN PV.

The XEN_PV specific pci.arch_init() function overrides the default
create_pci_msi_domain() which is obviously too late.

As a consequence the XEN PV PCI/MSI allocation goes through the native
path which runs out of vectors and causes malfunction.

Invoke it after x86_init.pci.arch_init().

Fixes: 6b15ffa07d ("x86/irq: Initialize PCI/MSI domain at PCI init time")
Reported-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/87pn18djte.fsf@nanos.tec.linutronix.de
2021-02-10 22:06:47 +01:00
Linus Torvalds 48c1c40ab4 ARM: SoC drivers for v5.11
There are a couple of subsystems maintained by other people that
 merge their drivers through the SoC tree, those changes include:
 
  - The SCMI firmware framework gains support for sensor notifications
    and for controlling voltage domains.
 
  - A large update for the Tegra memory controller driver, integrating
    it better with the interconnect framework
 
  - The memory controller subsystem gains support for Mediatek MT8192
 
  - The reset controller framework gains support for sharing pulsed
    resets
 
 For Soc specific drivers in drivers/soc, the main changes are
 
  - The Allwinner/sunxi MBUS gets a rework for the way it handles
    dma_map_ops and offsets between physical and dma address spaces.
 
  - An errata fix plus some cleanups for Freescale Layerscape SoCs
 
  - A cleanup for renesas drivers regarding MMIO accesses.
 
  - New SoC specific drivers for Mediatek MT8192 and MT8183 power domains
 
  - New SoC specific drivers for Aspeed AST2600 LPC bus control
    and SoC identification.
 
  - Core Power Domain support for Qualcomm MSM8916, MSM8939, SDM660
    and SDX55.
 
  - A rework of the TI AM33xx 'genpd' power domain support to use
    information from DT instead of platform data
 
  - Support for TI AM64x SoCs
 
  - Allow building some Amlogic drivers as modules instead of built-in
 
 Finally, there are numerous cleanups and smaller bug fixes for
 Mediatek, Tegra, Samsung, Qualcomm, TI OMAP, Amlogic, Rockchips,
 Renesas, and Xilinx SoCs.
 
 There is a trivial conflict in the cedrus driver, with two branches
 adding the same CEDRUS_CAPABILITY_H265_DEC flag, and another trivial
 remove/remove conflict in linux/dma-mapping.h.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'arm-soc-drivers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC driver updates from Arnd Bergmann:
 "There are a couple of subsystems maintained by other people that merge
  their drivers through the SoC tree, those changes include:

   - The SCMI firmware framework gains support for sensor notifications
     and for controlling voltage domains.

   - A large update for the Tegra memory controller driver, integrating
     it better with the interconnect framework

   - The memory controller subsystem gains support for Mediatek MT8192

   - The reset controller framework gains support for sharing pulsed
     resets

  For Soc specific drivers in drivers/soc, the main changes are

   - The Allwinner/sunxi MBUS gets a rework for the way it handles
     dma_map_ops and offsets between physical and dma address spaces.

   - An errata fix plus some cleanups for Freescale Layerscape SoCs

   - A cleanup for renesas drivers regarding MMIO accesses.

   - New SoC specific drivers for Mediatek MT8192 and MT8183 power
     domains

   - New SoC specific drivers for Aspeed AST2600 LPC bus control and SoC
     identification.

   - Core Power Domain support for Qualcomm MSM8916, MSM8939, SDM660 and
     SDX55.

   - A rework of the TI AM33xx 'genpd' power domain support to use
     information from DT instead of platform data

   - Support for TI AM64x SoCs

   - Allow building some Amlogic drivers as modules instead of built-in

  Finally, there are numerous cleanups and smaller bug fixes for
  Mediatek, Tegra, Samsung, Qualcomm, TI OMAP, Amlogic, Rockchips,
  Renesas, and Xilinx SoCs"

* tag 'arm-soc-drivers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (222 commits)
  soc: mediatek: mmsys: Specify HAS_IOMEM dependency for MTK_MMSYS
  firmware: xilinx: Properly align function parameter
  firmware: xilinx: Add a blank line after function declaration
  firmware: xilinx: Remove additional newline
  firmware: xilinx: Fix kernel-doc warnings
  firmware: xlnx-zynqmp: fix compilation warning
  soc: xilinx: vcu: add missing register NUM_CORE
  soc: xilinx: vcu: use vcu-settings syscon registers
  dt-bindings: soc: xlnx: extract xlnx, vcu-settings to separate binding
  soc: xilinx: vcu: drop useless success message
  clk: samsung: mark PM functions as __maybe_unused
  soc: samsung: exynos-chipid: initialize later - with arch_initcall
  soc: samsung: exynos-chipid: order list of SoCs by name
  memory: jz4780_nemc: Fix potential NULL dereference in jz4780_nemc_probe()
  memory: ti-emif-sram: only build for ARMv7
  memory: tegra30: Support interconnect framework
  memory: tegra20: Support hardware versioning and clean up OPP table initialization
  dt-bindings: memory: tegra20-emc: Document opp-supported-hw property
  soc: rockchip: io-domain: Fix error return code in rockchip_iodomain_probe()
  reset-controller: ti: force the write operation when assert or deassert
  ...
2020-12-16 16:38:41 -08:00
Linus Torvalds 148842c98a Yet another large set of x86 interrupt management updates:
- Simplification and distangling of the MSI related functionality
 
    - Let IO/APIC construct the RTE entries from an MSI message instead of
      having IO/APIC specific code in the interrupt remapping drivers
 
    - Make the retrieval of the parent interrupt domain (vector or remap
      unit) less hardcoded and use the relevant irqdomain callbacks for
      selection.
 
    - Allow the handling of more than 255 CPUs without a virtualized IOMMU
      when the hypervisor supports it. This has made been possible by the
      above modifications and also simplifies the existing workaround in the
      HyperV specific virtual IOMMU.
 
    - Cleanup of the historical timer_works() irq flags related
      inconsistencies.
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Merge tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 apic updates from Thomas Gleixner:
 "Yet another large set of x86 interrupt management updates:

   - Simplification and distangling of the MSI related functionality

   - Let IO/APIC construct the RTE entries from an MSI message instead
     of having IO/APIC specific code in the interrupt remapping drivers

   - Make the retrieval of the parent interrupt domain (vector or remap
     unit) less hardcoded and use the relevant irqdomain callbacks for
     selection.

   - Allow the handling of more than 255 CPUs without a virtualized
     IOMMU when the hypervisor supports it. This has made been possible
     by the above modifications and also simplifies the existing
     workaround in the HyperV specific virtual IOMMU.

   - Cleanup of the historical timer_works() irq flags related
     inconsistencies"

* tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
  x86/ioapic: Cleanup the timer_works() irqflags mess
  iommu/hyper-v: Remove I/O-APIC ID check from hyperv_irq_remapping_select()
  iommu/amd: Fix IOMMU interrupt generation in X2APIC mode
  iommu/amd: Don't register interrupt remapping irqdomain when IR is disabled
  iommu/amd: Fix union of bitfields in intcapxt support
  x86/ioapic: Correct the PCI/ISA trigger type selection
  x86/ioapic: Use I/O-APIC ID for finding irqdomain, not index
  x86/hyperv: Enable 15-bit APIC ID if the hypervisor supports it
  x86/kvm: Enable 15-bit extension when KVM_FEATURE_MSI_EXT_DEST_ID detected
  iommu/hyper-v: Disable IRQ pseudo-remapping if 15 bit APIC IDs are available
  x86/apic: Support 15 bits of APIC ID in MSI where available
  x86/ioapic: Handle Extended Destination ID field in RTE
  iommu/vt-d: Simplify intel_irq_remapping_select()
  x86: Kill all traces of irq_remapping_get_irq_domain()
  x86/ioapic: Use irq_find_matching_fwspec() to find remapping irqdomain
  x86/hpet: Use irq_find_matching_fwspec() to find remapping irqdomain
  iommu/hyper-v: Implement select() method on remapping irqdomain
  iommu/vt-d: Implement select() method on remapping irqdomain
  iommu/amd: Implement select() method on remapping irqdomain
  x86/apic: Add select() method on vector irqdomain
  ...
2020-12-14 18:59:53 -08:00
Linus Torvalds 405f868f13 - Remove all uses of TIF_IA32 and TIF_X32 and reclaim the two bits in the end
(Gabriel Krisman Bertazi)
 
 - All kinds of minor cleanups all over the tree.
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Merge tag 'x86_cleanups_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cleanups from Borislav Petkov:
 "Another branch with a nicely negative diffstat, just the way I
  like 'em:

   - Remove all uses of TIF_IA32 and TIF_X32 and reclaim the two bits in
     the end (Gabriel Krisman Bertazi)

   - All kinds of minor cleanups all over the tree"

* tag 'x86_cleanups_for_v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
  x86/ia32_signal: Propagate __user annotation properly
  x86/alternative: Update text_poke_bp() kernel-doc comment
  x86/PCI: Make a kernel-doc comment a normal one
  x86/asm: Drop unused RDPID macro
  x86/boot/compressed/64: Use TEST %reg,%reg instead of CMP $0,%reg
  x86/head64: Remove duplicate include
  x86/mm: Declare 'start' variable where it is used
  x86/head/64: Remove unused GET_CR2_INTO() macro
  x86/boot: Remove unused finalize_identity_maps()
  x86/uaccess: Document copy_from_user_nmi()
  x86/dumpstack: Make show_trace_log_lvl() static
  x86/mtrr: Fix a kernel-doc markup
  x86/setup: Remove unused MCA variables
  x86, libnvdimm/test: Remove COPY_MC_TEST
  x86: Reclaim TIF_IA32 and TIF_X32
  x86/mm: Convert mmu context ia32_compat into a proper flags field
  x86/elf: Use e_machine to check for x32/ia32 in setup_additional_pages()
  elf: Expose ELF header on arch_setup_additional_pages()
  x86/elf: Use e_machine to select start_thread for x32
  elf: Expose ELF header in compat_start_thread()
  ...
2020-12-14 13:45:26 -08:00
Sami Tolvanen 83321c335d x86/pci: Fix the function type for check_reserved_t
e820__mapped_all() is passed as a callback to is_mmconf_reserved(),
which expects a function of type:

  typedef bool (*check_reserved_t)(u64 start, u64 end, unsigned type);

However, e820__mapped_all() accepts enum e820_type as the last argument
and this type mismatch trips indirect call checking with Clang's
Control-Flow Integrity (CFI).

As is_mmconf_reserved() only passes enum e820_type values for the
type argument, change the typedef and the unused type argument in
is_acpi_reserved() to enum e820_type to fix the type mismatch.

Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20201130193900.456726-1-samitolvanen@google.com
2020-12-01 14:22:52 +01:00
Alex Shi 638920a66a x86/PCI: Make a kernel-doc comment a normal one
The comment is using kernel-doc markup but that comment isn't a
kernel-doc comment so make it a normal one to avoid:

  arch/x86/pci/i386.c:373: warning: Function parameter or member \
	  'pcibios_assign_resources' not described in 'fs_initcall'

 [ bp: Massage and fixup comment while at it. ]

Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/1605257895-5536-5-git-send-email-alex.shi@linux.alibaba.com
2020-11-27 13:43:09 +01:00
Christoph Hellwig 16fee29b07
dma-mapping: remove the dma_direct_set_offset export
Drop the dma_direct_set_offset export and move the declaration to
dma-map-ops.h now that the Allwinner drivers have stopped calling it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2020-11-18 09:11:38 +01:00
Thomas Gleixner a27dca645d x86/io_apic: Cleanup trigger/polarity helpers
'trigger' and 'polarity' are used throughout the I/O-APIC code for handling
the trigger type (edge/level) and the active low/high configuration. While
there are defines for initializing these variables and struct members, they
are not used consequently and the meaning of 'trigger' and 'polarity' is
opaque and confusing at best.

Rename them to 'is_level' and 'active_low' and make them boolean in various
structs so it's entirely clear what the meaning is.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-20-dwmw2@infradead.org
2020-10-28 20:26:26 +01:00
Thomas Gleixner 41bb2115be x86/pci/xen: Use msi_msg shadow structs
Use the msi_msg shadow structs and compose the message with named bitfields
instead of the unreadable macro maze.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-18-dwmw2@infradead.org
2020-10-28 20:26:26 +01:00
Linus Torvalds 00937f36b0 pci-v5.10-changes
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Merge tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:
   - Print IRQ number used by PCIe Link Bandwidth Notification (Dongdong
     Liu)
   - Add schedule point in pci_read_config() to reduce max latency
     (Jiang Biao)
   - Add Kconfig options for MPS/MRRS strategy (Jim Quinlan)

  Resource management:
   - Fix pci_iounmap() memory leak when !CONFIG_GENERIC_IOMAP (Lorenzo
     Pieralisi)

  PCIe native device hotplug:
   - Reduce noisiness on hot removal (Lukas Wunner)

  Power management:
   - Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds"
     that was done on the basis of spec typo (Bjorn Helgaas)
   - Rename pci_dev.d3_delay to d3hot_delay to remove D3hot/D3cold
     ambiguity (Krzysztof Wilczyński)
   - Remove unused pcibios_pm_ops (Vaibhav Gupta)

  IOMMU:
   - Enable Translation Blocking for external devices to harden against
     DMA attacks (Rajat Jain)

  Error handling:
   - Add an ACPI APEI notifier chain for vendor CPER records to enable
     device-specific error handling (Shiju Jose)

  ASPM:
   - Remove struct aspm_register_info to simplify code (Saheed O.
     Bolarinwa)

  Amlogic Meson PCIe controller driver:
   - Build as module by default (Kevin Hilman)

  Ampere Altra PCIe controller driver:
   - Add MCFG quirk to work around non-standard ECAM implementation
     (Tuan Phan)

  Broadcom iProc PCIe controller driver:
   - Set affinity mask on MSI interrupts (Mark Tomlinson)

  Broadcom STB PCIe controller driver:
   - Make PCIE_BRCMSTB depend on ARCH_BRCMSTB (Jim Quinlan)
   - Add DT bindings for more Brcmstb chips (Jim Quinlan)
   - Add bcm7278 register info (Jim Quinlan)
   - Add bcm7278 PERST# support (Jim Quinlan)
   - Add suspend and resume pm_ops (Jim Quinlan)
   - Add control of rescal reset (Jim Quinlan)
   - Set additional internal memory DMA viewport sizes (Jim Quinlan)
   - Accommodate MSI for older chips (Jim Quinlan)
   - Set bus max burst size by chip type (Jim Quinlan)
   - Add support for bcm7211, bcm7216, bcm7445, bcm7278 (Jim Quinlan)

  Freescale i.MX6 PCIe controller driver:
   - Use dev_err_probe() to reduce redundant messages (Anson Huang)

  Freescale Layerscape PCIe controller driver:
   - Enforce 4K DMA buffer alignment in endpoint test (Hou Zhiqiang)
   - Add DT compatible strings for ls1088a, ls2088a (Xiaowei Bao)
   - Add endpoint support for ls1088a, ls2088a (Xiaowei Bao)
   - Add endpoint test support for lS1088a (Xiaowei Bao)
   - Add MSI-X support for ls1088a (Xiaowei Bao)

  HiSilicon HIP PCIe controller driver:
   - Handle HIP-specific errors via ACPI APEI (Yicong Yang)

  HiSilicon Kirin PCIe controller driver:
   - Return -EPROBE_DEFER if the GPIO isn't ready (Bean Huo)

  Intel VMD host bridge driver:
   - Factor out physical offset, bus offset, IRQ domain, IRQ allocation
     (Jon Derrick)
   - Use generic PCI PM correctly (Jon Derrick)

  Marvell Aardvark PCIe controller driver:
   - Fix compilation on s390 (Pali Rohár)
   - Implement driver 'remove' function and allow to build it as module
     (Pali Rohár)
   - Move PCIe reset card code to advk_pcie_train_link() (Pali Rohár)
   - Convert mvebu a3700 internal SMCC firmware return codes to errno
     (Pali Rohár)
   - Fix initialization with old Marvell's Arm Trusted Firmware (Pali
     Rohár)

  Microsoft Hyper-V host bridge driver:
   - Fix hibernation in case interrupts are not re-created (Dexuan Cui)

  NVIDIA Tegra PCIe controller driver:
   - Stop checking return value of debugfs_create() functions (Greg
     Kroah-Hartman)
   - Convert to use DEFINE_SEQ_ATTRIBUTE macro (Liu Shixin)

  Qualcomm PCIe controller driver:
   - Reset PCIe to work around Qsdk U-Boot issue (Ansuel Smith)

  Renesas R-Car PCIe controller driver:
   - Add DT documentation for r8a774a1, r8a774b1, r8a774e1 endpoints
     (Lad Prabhakar)
   - Add RZ/G2M, RZ/G2N, RZ/G2H IDs to endpoint test (Lad Prabhakar)
   - Add DT support for r8a7742 (Lad Prabhakar)

  Socionext UniPhier Pro5 controller driver:
   - Add DT descriptions of iATU register (host and endpoint) (Kunihiko
     Hayashi)

  Synopsys DesignWare PCIe controller driver:
   - Add link up check in dw_child_pcie_ops.map_bus() (racy, but seems
     unavoidable) (Hou Zhiqiang)
   - Fix endpoint Header Type check so multi-function devices work (Hou
     Zhiqiang)
   - Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang)
   - Stop leaking MSI page in suspend/resume (Jisheng Zhang)
   - Add common iATU register support instead of keystone-specific code
     (Kunihiko Hayashi)
   - Major config space access and other cleanups in dwc core and
     drivers that use it (al, exynos, histb, imx6, intel-gw, keystone,
     kirin, meson, qcom, tegra) (Rob Herring)
   - Add multiple PFs support for endpoint (Xiaowei Bao)
   - Add MSI-X doorbell mode in endpoint mode (Xiaowei Bao)

  Miscellaneous:
   - Use fallthrough pseudo-keyword (Gustavo A. R. Silva)
   - Fix "0 used as NULL pointer" warnings (Gustavo Pimentel)
   - Fix "cast truncates bits from constant value" warnings (Gustavo
     Pimentel)
   - Remove redundant zeroing for sg_init_table() (Julia Lawall)
   - Use scnprintf(), not snprintf(), in sysfs "show" functions
     (Krzysztof Wilczyński)
   - Remove unused assignments (Krzysztof Wilczyński)
   - Fix "0 used as NULL pointer" warning (Krzysztof Wilczyński)
   - Simplify bool comparisons (Krzysztof Wilczyński)
   - Use for_each_child_of_node() and for_each_node_by_name() (Qinglang
     Miao)
   - Simplify return expressions (Qinglang Miao)"

* tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (147 commits)
  PCI: vmd: Update VMD PM to correctly use generic PCI PM
  PCI: vmd: Create IRQ allocation helper
  PCI: vmd: Create IRQ Domain configuration helper
  PCI: vmd: Create bus offset configuration helper
  PCI: vmd: Create physical offset helper
  PCI: v3-semi: Remove unneeded break
  PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus()
  PCI/ASPM: Remove struct pcie_link_state.l1ss
  PCI/ASPM: Remove struct aspm_register_info.l1ss_cap
  PCI/ASPM: Pass L1SS Capabilities value, not struct aspm_register_info
  PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl1
  PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl2 (unused)
  PCI/ASPM: Remove struct aspm_register_info.l1ss_cap_ptr
  PCI/ASPM: Remove struct aspm_register_info.latency_encoding
  PCI/ASPM: Remove struct aspm_register_info.enabled
  PCI/ASPM: Remove struct aspm_register_info.support
  PCI/ASPM: Use 'parent' and 'child' for readability
  PCI/ASPM: Move LTR path check to where it's used
  PCI/ASPM: Move pci_clear_and_set_dword() earlier
  PCI: dwc: Fix MSI page leakage in suspend/resume
  ...
2020-10-22 12:41:00 -07:00
Bjorn Helgaas 8b28a3f346 Merge branch 'pci/misc'
- Remove unnecessary #includes (Gustavo Pimentel)

- Fix intel_mid_pci.c build error when !CONFIG_ACPI (Randy Dunlap)

- Use scnprintf(), not snprintf(), in sysfs "show" functions (Krzysztof
  Wilczyński)

- Simplify pci-pf-stub by using module_pci_driver() (Liu Shixin)

- Print IRQ used by Link Bandwidth Notification (Dongdong Liu)

- Update sysfs mmap-related #ifdef comments (Clint Sbisa)

- Simplify pci_dev_reset_slot_function() (Lukas Wunner)

- Use "NULL" instead of "0" to fix sparse warnings (Gustavo Pimentel)

- Simplify bool comparisons (Krzysztof Wilczyński)

- Drop double zeroing for P2PDMA sg_init_table() (Julia Lawall)

* pci/misc:
  PCI: v3-semi: Remove unneeded break
  PCI/P2PDMA: Drop double zeroing for sg_init_table()
  PCI: Simplify bool comparisons
  PCI: endpoint: Use "NULL" instead of "0" as a NULL pointer
  PCI: Simplify pci_dev_reset_slot_function()
  PCI: Update mmap-related #ifdef comments
  PCI/LINK: Print IRQ number used by port
  PCI/IOV: Simplify pci-pf-stub with module_pci_driver()
  PCI: Use scnprintf(), not snprintf(), in sysfs "show" functions
  x86/PCI: Fix intel_mid_pci.c build error when ACPI is not enabled
  PCI: Remove unnecessary header includes
2020-10-21 09:58:36 -05:00
Linus Torvalds 5a32c3413d dma-mapping updates for 5.10
- rework the non-coherent DMA allocator
  - move private definitions out of <linux/dma-mapping.h>
  - lower CMA_ALIGNMENT (Paul Cercueil)
  - remove the omap1 dma address translation in favor of the common
    code
  - make dma-direct aware of multiple dma offset ranges (Jim Quinlan)
  - support per-node DMA CMA areas (Barry Song)
  - increase the default seg boundary limit (Nicolin Chen)
  - misc fixes (Robin Murphy, Thomas Tai, Xu Wang)
  - various cleanups
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Merge tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping updates from Christoph Hellwig:

 - rework the non-coherent DMA allocator

 - move private definitions out of <linux/dma-mapping.h>

 - lower CMA_ALIGNMENT (Paul Cercueil)

 - remove the omap1 dma address translation in favor of the common code

 - make dma-direct aware of multiple dma offset ranges (Jim Quinlan)

 - support per-node DMA CMA areas (Barry Song)

 - increase the default seg boundary limit (Nicolin Chen)

 - misc fixes (Robin Murphy, Thomas Tai, Xu Wang)

 - various cleanups

* tag 'dma-mapping-5.10' of git://git.infradead.org/users/hch/dma-mapping: (63 commits)
  ARM/ixp4xx: add a missing include of dma-map-ops.h
  dma-direct: simplify the DMA_ATTR_NO_KERNEL_MAPPING handling
  dma-direct: factor out a dma_direct_alloc_from_pool helper
  dma-direct check for highmem pages in dma_direct_alloc_pages
  dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h>
  dma-mapping: move large parts of <linux/dma-direct.h> to kernel/dma
  dma-mapping: move dma-debug.h to kernel/dma/
  dma-mapping: remove <asm/dma-contiguous.h>
  dma-mapping: merge <linux/dma-contiguous.h> into <linux/dma-map-ops.h>
  dma-contiguous: remove dma_contiguous_set_default
  dma-contiguous: remove dev_set_cma_area
  dma-contiguous: remove dma_declare_contiguous
  dma-mapping: split <linux/dma-mapping.h>
  cma: decrease CMA_ALIGNMENT lower limit to 2
  firewire-ohci: use dma_alloc_pages
  dma-iommu: implement ->alloc_noncoherent
  dma-mapping: add new {alloc,free}_noncoherent dma_map_ops methods
  dma-mapping: add a new dma_alloc_pages API
  dma-mapping: remove dma_cache_sync
  53c700: convert to dma_alloc_noncoherent
  ...
2020-10-15 14:43:29 -07:00
Linus Torvalds 79db2b74aa Merge branch 'stable/for-linus-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb updates from Konrad Rzeszutek Wilk:
 "Minor enhancement of using %p to print phys_addr_r and also compiler
  warnings"

* 'stable/for-linus-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
  swiotlb: Mark max_segment with static keyword
  swiotlb: Declare swiotlb_late_init_with_default_size() in header
  swiotlb: Use %pa to print phys_addr_t variables
2020-10-14 12:00:02 -07:00
Krzysztof Wilczyński 3789af9a13 PCI/PM: Rename pci_dev.d3_delay to d3hot_delay
PCI devices support two variants of the D3 power state: D3hot (main power
present) D3cold (main power removed).  Previously struct pci_dev contained:

  unsigned int    d3_delay;       /* D3->D0 transition time in ms */
  unsigned int    d3cold_delay;   /* D3cold->D0 transition time in ms */

"d3_delay" refers specifically to the D3hot state.  Rename it to
"d3hot_delay" to avoid ambiguity and align with the ACPI "_DSM for
Specifying Device Readiness Durations" in the PCI Firmware spec r3.2,
sec 4.6.9.

There is no change to the functionality.

Link: https://lore.kernel.org/r/20200730210848.1578826-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-09-29 14:21:50 -05:00
Jim Quinlan e0d072782c dma-mapping: introduce DMA range map, supplanting dma_pfn_offset
The new field 'dma_range_map' in struct device is used to facilitate the
use of single or multiple offsets between mapping regions of cpu addrs and
dma addrs.  It subsumes the role of "dev->dma_pfn_offset" which was only
capable of holding a single uniform offset and had no region bounds
checking.

The function of_dma_get_range() has been modified so that it takes a single
argument -- the device node -- and returns a map, NULL, or an error code.
The map is an array that holds the information regarding the DMA regions.
Each range entry contains the address offset, the cpu_start address, the
dma_start address, and the size of the region.

of_dma_configure() is the typical manner to set range offsets but there are
a number of ad hoc assignments to "dev->dma_pfn_offset" in the kernel
driver code.  These cases now invoke the function
dma_direct_set_offset(dev, cpu_addr, dma_addr, size).

Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
[hch: various interface cleanups]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
2020-09-17 18:43:56 +02:00
Thomas Gleixner 874a2013a0 x86/irq: Make most MSI ops XEN private
Nothing except XEN uses the setup/teardown ops. Hide them there.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200826112334.198633344@linutronix.de
2020-09-16 16:52:38 +02:00
Thomas Gleixner 7ca435cf85 x86/irq: Cleanup the arch_*_msi_irqs() leftovers
Get rid of all the gunk and remove the 'select PCI_MSI_ARCH_FALLBACK' from
the x86 Kconfig so the weak functions in the PCI core are replaced by stubs
which emit a warning, which ensures that any fail to set the irq domain
pointer results in a warning when the device is used.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200826112334.086003720@linutronix.de
2020-09-16 16:52:38 +02:00
Thomas Gleixner 2c681e6b37 x86/pci: Set default irq domain in pcibios_add_device()
Now that interrupt remapping sets the irqdomain pointer when a PCI device
is added it's possible to store the default irq domain in the device struct
in pcibios_add_device().

If the bus to which a device is connected has an irq domain associated then
this domain is used otherwise the default domain (PCI/MSI native or XEN
PCI/MSI) is used. Using the bus domain ensures that special MSI bus domains
like VMD work.

This makes XEN and the non-remapped native case work solely based on the
irq domain pointer in struct device for PCI/MSI and allows to remove the
arch fallback and make most of the x86_msi ops private to XEN in the next
steps.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200826112333.900423047@linutronix.de
2020-09-16 16:52:37 +02:00
Thomas Gleixner 2e4386eba0 x86/xen: Wrap XEN MSI management into irqdomain
To allow utilizing the irq domain pointer in struct device it is necessary
to make XEN/MSI irq domain compatible.

While the right solution would be to truly convert XEN to irq domains, this
is an exercise which is not possible for mere mortals with limited XENology.

Provide a plain irqdomain wrapper around XEN. While this is blatant
violation of the irqdomain design, it's the only solution for a XEN igorant
person to make progress on the issue which triggered this change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20200826112333.622352798@linutronix.de
2020-09-16 16:52:37 +02:00
Thomas Gleixner 70b59379ef x86/xen: Consolidate XEN-MSI init
X86 cannot store the irq domain pointer in struct device without breaking
XEN because the irq domain pointer takes precedence over arch_*_msi_irqs()
fallbacks.

To achieve this XEN MSI interrupt management needs to be wrapped into an
irq domain.

Move the x86_msi ops setup into a single function to prepare for this.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20200826112333.420224092@linutronix.de
2020-09-16 16:52:36 +02:00
Thomas Gleixner 7d4d892de6 x86/xen: Rework MSI teardown
X86 cannot store the irq domain pointer in struct device without breaking
XEN because the irq domain pointer takes precedence over arch_*_msi_irqs()
fallbacks.

XENs MSI teardown relies on default_teardown_msi_irqs() which invokes
arch_teardown_msi_irq(). default_teardown_msi_irqs() is a trivial iterator
over the msi entries associated to a device.

Implement this loop in xen_teardown_msi_irqs() to prepare for removal of
the fallbacks for X86.

This is a preparatory step to wrap XEN MSI alloc/free into a irq domain
which in turn allows to store the irq domain pointer in struct device and
to use the irq domain functions directly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20200826112333.326841410@linutronix.de
2020-09-16 16:52:36 +02:00
Thomas Gleixner 2905c50b7d x86/xen: Make xen_msi_init() static and rename it to xen_hvm_msi_init()
The only user is in the same file and the name is too generic because this
function is only ever used for HVM domains.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juergen Gross<jgross@suse.com>
Link: https://lore.kernel.org/r/20200826112333.234097629@linutronix.de
2020-09-16 16:52:36 +02:00
Thomas Gleixner 6b15ffa07d x86/irq: Initialize PCI/MSI domain at PCI init time
No point in initializing the default PCI/MSI interrupt domain early and no
point to create it when XEN PV/HVM/DOM0 are active.

Move the initialization to pci_arch_init() and convert it to init ops so
that XEN can override it as XEN has it's own PCI/MSI management. The XEN
override comes in a later step.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200826112332.859209894@linutronix.de
2020-09-16 16:52:35 +02:00
Thomas Gleixner 445d3595ab x86/pci: Reducde #ifdeffery in PCI init code
Adding a function call before the first #ifdef in arch_pci_init() triggers
a 'mixed declarations and code' warning if PCI_DIRECT is enabled.

Use stub functions and move the #ifdeffery to the header file where it is
not in the way.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20200826112332.767707340@linutronix.de
2020-09-16 16:52:35 +02:00
Andy Shevchenko 61b82bbf69 swiotlb: Declare swiotlb_late_init_with_default_size() in header
Compiler is not happy about one function prototype:

  CC      kernel/dma/swiotlb.o
  kernel/dma/swiotlb.c:275:1: warning: no previous prototype for ‘swiotlb_late_init_with_default_size’ [-Wmissing-prototypes]
  275 | swiotlb_late_init_with_default_size(size_t default_size)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Since it's used outside of the module, move its declaration to the header
from the user.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2020-09-10 09:41:30 -04:00
Randy Dunlap 035fff1f7a x86/PCI: Fix intel_mid_pci.c build error when ACPI is not enabled
Fix build error when CONFIG_ACPI is not set/enabled by adding the header
file <asm/acpi.h> which contains a stub for the function in the build
error.

    ../arch/x86/pci/intel_mid_pci.c: In function ‘intel_mid_pci_init’:
    ../arch/x86/pci/intel_mid_pci.c:303:2: error: implicit declaration of function ‘acpi_noirq_set’; did you mean ‘acpi_irq_get’? [-Werror=implicit-function-declaration]
      acpi_noirq_set();

Fixes: a912a7584e ("x86/platform/intel-mid: Move PCI initialization to arch_init()")
Link: https://lore.kernel.org/r/ea903917-e51b-4cc9-2680-bc1e36efa026@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Jesse Barnes <jsbarnes@google.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org	# v4.16+
Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jsbarnes@google.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
2020-09-01 11:01:13 -05:00
Linus Torvalds c0a4f5b354 xen: branch for v5.9-rc2
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Merge tag 'for-linus-5.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "One build fix and a minor fix for suppressing a useless warning when
  booting a Xen dom0 via UEFI"

* tag 'for-linus-5.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  Fix build error when CONFIG_ACPI is not set/enabled:
  efi: avoid error message when booting under Xen
2020-08-21 12:28:33 -07:00
Randy Dunlap ee87e1557c Fix build error when CONFIG_ACPI is not set/enabled:
../arch/x86/pci/xen.c: In function ‘pci_xen_init’:
../arch/x86/pci/xen.c:410:2: error: implicit declaration of function ‘acpi_noirq_set’; did you mean ‘acpi_irq_get’? [-Werror=implicit-function-declaration]
  acpi_noirq_set();

Fixes: 88e9ca161c ("xen/pci: Use acpi_noirq_set() helper to avoid #ifdef")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xenproject.org
Cc: linux-pci@vger.kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-20 06:30:47 +02:00
Linus Torvalds 049eb096da pci-v5.9-changes
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Merge tag 'pci-v5.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:
   - Fix pci_cfg_wait queue locking problem (Bjorn Helgaas)
   - Convert PCIe capability PCIBIOS errors to errno (Bolarinwa Olayemi
     Saheed)
   - Align PCIe capability and PCI accessor return values (Bolarinwa
     Olayemi Saheed)
   - Fix pci_create_slot() reference count leak (Qiushi Wu)
   - Announce device after early fixups (Tiezhu Yang)

  PCI device hotplug:
   - Make rpadlpar functions static (Wei Yongjun)

  Driver binding:
   - Add device even if driver attach failed (Rajat Jain)

  Virtualization:
   - xen: Remove redundant initialization of irq (Colin Ian King)

  IOMMU:
   - Add pci_pri_supported() to check device or associated PF (Ashok Raj)
   - Release IVRS table in AMD ACS quirk (Hanjun Guo)
   - Mark AMD Navi10 GPU rev 0x00 ATS as broken (Kai-Heng Feng)
   - Treat "external-facing" devices themselves as internal (Rajat Jain)

  MSI:
   - Forward MSI-X error code in pci_alloc_irq_vectors_affinity() (Piotr
     Stankiewicz)

  Error handling:
   - Clear PCIe Device Status errors only if OS owns AER (Jonathan
     Cameron)
   - Log correctable errors as warning, not error (Matt Jolly)
   - Use 'pci_channel_state_t' instead of 'enum pci_channel_state' (Luc
     Van Oostenryck)

  Peer-to-peer DMA:
   - Allow P2PDMA on AMD Zen and newer CPUs (Logan Gunthorpe)

  ASPM:
   - Add missing newline in sysfs 'policy' (Xiongfeng Wang)

  Native PCIe controllers:
   - Convert to devm_platform_ioremap_resource_byname() (Dejin Zheng)
   - Convert to devm_platform_ioremap_resource() (Dejin Zheng)
   - Remove duplicate error message from devm_pci_remap_cfg_resource()
     callers (Dejin Zheng)
   - Fix runtime PM imbalance on error (Dinghao Liu)
   - Remove dev_err() when handing an error from platform_get_irq()
     (Krzysztof Wilczyński)
   - Use pci_host_bridge.windows list directly instead of splicing in a
     temporary list for cadence, mvebu, host-common (Rob Herring)
   - Use pci_host_probe() instead of open-coding all the pieces for
     altera, brcmstb, iproc, mobiveil, rcar, rockchip, tegra, v3,
     versatile, xgene, xilinx, xilinx-nwl (Rob Herring)
   - Default host bridge parent device to the platform device (Rob
     Herring)
   - Use pci_is_root_bus() instead of tracking root bus number
     separately in aardvark, designware (imx6, keystone,
     designware-host), mobiveil, xilinx-nwl, xilinx, rockchip, rcar (Rob
     Herring)
   - Set host bridge bus number in pci_scan_root_bus_bridge() instead of
     each driver for aardvark, designware-host, host-common, mediatek,
     rcar, tegra, v3-semi (Rob Herring)
   - Move DT resource setup into devm_pci_alloc_host_bridge() (Rob
     Herring)
   - Set bridge map_irq and swizzle_irq to default functions; drivers
     that don't support legacy IRQs (iproc) need to undo this (Rob
     Herring)

  ARM Versatile PCIe controller driver:
   - Drop flag PCI_ENABLE_PROC_DOMAINS (Rob Herring)

  Cadence PCIe controller driver:
   - Use "dma-ranges" instead of "cdns,no-bar-match-nbits" property
     (Kishon Vijay Abraham I)
   - Remove "mem" from reg binding (Kishon Vijay Abraham I)
   - Fix cdns_pcie_{host|ep}_setup() error path (Kishon Vijay Abraham I)
   - Convert all r/w accessors to perform only 32-bit accesses (Kishon
     Vijay Abraham I)
   - Add support to start link and verify link status (Kishon Vijay
     Abraham I)
   - Allow pci_host_bridge to have custom pci_ops (Kishon Vijay Abraham I)
   - Add new *ops* for CPU addr fixup (Kishon Vijay Abraham I)
   - Fix updating Vendor ID and Subsystem Vendor ID register (Kishon
     Vijay Abraham I)
   - Use bridge resources for outbound window setup (Rob Herring)
   - Remove private bus number and range storage (Rob Herring)

  Cadence PCIe endpoint driver:
   - Add MSI-X support (Alan Douglas)

  HiSilicon PCIe controller driver:
   - Remove non-ECAM HiSilicon hip05/hip06 driver (Rob Herring)

  Intel VMD host bridge driver:
   - Use Shadow MEMBAR registers for QEMU/KVM guests (Jon Derrick)

  Loongson PCIe controller driver:
   - Use DECLARE_PCI_FIXUP_EARLY for bridge_class_quirk() (Tiezhu Yang)

  Marvell Aardvark PCIe controller driver:
   - Indicate error in 'val' when config read fails (Pali Rohár)
   - Don't touch PCIe registers if no card connected (Pali Rohár)

  Marvell MVEBU PCIe controller driver:
   - Setup BAR0 in order to fix MSI (Shmuel Hazan)

  Microsoft Hyper-V host bridge driver:
   - Fix a timing issue which causes kdump to fail occasionally (Wei Hu)
   - Make some functions static (Wei Yongjun)

  NVIDIA Tegra PCIe controller driver:
   - Revert tegra124 raw_violation_fixup (Nicolas Chauvet)
   - Remove PLL power supplies (Thierry Reding)

  Qualcomm PCIe controller driver:
   - Change duplicate PCI reset to phy reset (Abhishek Sahu)
   - Add missing ipq806x clocks in PCIe driver (Ansuel Smith)
   - Add missing reset for ipq806x (Ansuel Smith)
   - Add ext reset (Ansuel Smith)
   - Use bulk clk API and assert on error (Ansuel Smith)
   - Add support for tx term offset for rev 2.1.0 (Ansuel Smith)
   - Define some PARF params needed for ipq8064 SoC (Ansuel Smith)
   - Add ipq8064 rev2 variant (Ansuel Smith)
   - Support PCI speed set for ipq806x (Sham Muthayyan)

  Renesas R-Car PCIe controller driver:
   - Use devm_pci_alloc_host_bridge() (Rob Herring)
   - Use struct pci_host_bridge.windows list directly (Rob Herring)
   - Convert rcar-gen2 to use modern host bridge probe functions (Rob
     Herring)

  TI J721E PCIe driver:
   - Add TI J721E PCIe host and endpoint driver (Kishon Vijay Abraham I)

  Xilinx Versal CPM PCIe controller driver:
   - Add Versal CPM Root Port driver and YAML schema (Bharat Kumar
     Gogada)

  MicroSemi Switchtec management driver:
   - Add missing __iomem and __user tags to fix sparse warnings (Logan
     Gunthorpe)

  Miscellaneous:
   - Replace http:// links with https:// (Alexander A. Klimov)
   - Replace lkml.org, spinics, gmane with lore.kernel.org (Bjorn
     Helgaas)
   - Remove unused pci_lost_interrupt() (Heiner Kallweit)
   - Move PCI_VENDOR_ID_REDHAT definition to pci_ids.h (Huacai Chen)
   - Fix kerneldoc warnings (Krzysztof Kozlowski)"

* tag 'pci-v5.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (113 commits)
  PCI: Fix kerneldoc warnings
  PCI: xilinx-cpm: Add Versal CPM Root Port driver
  PCI: xilinx-cpm: Add YAML schemas for Versal CPM Root Port
  PCI: Set bridge map_irq and swizzle_irq to default functions
  PCI: Move DT resource setup into devm_pci_alloc_host_bridge()
  PCI: rcar-gen2: Convert to use modern host bridge probe functions
  PCI: Remove dev_err() when handing an error from platform_get_irq()
  MAINTAINERS: Add Kishon Vijay Abraham I for TI J721E SoC PCIe
  misc: pci_endpoint_test: Add J721E in pci_device_id table
  PCI: j721e: Add TI J721E PCIe driver
  PCI: switchtec: Add missing __iomem tag to fix sparse warnings
  PCI: switchtec: Add missing __iomem and __user tags to fix sparse warnings
  PCI: rpadlpar: Make functions static
  PCI/P2PDMA: Allow P2PDMA on AMD Zen and newer CPUs
  PCI: Release IVRS table in AMD ACS quirk
  PCI: Announce device after early fixups
  PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
  PCI: Remove unused pci_lost_interrupt()
  dt-bindings: PCI: Add EP mode dt-bindings for TI's J721E SoC
  dt-bindings: PCI: Add host mode dt-bindings for TI's J721E SoC
  ...
2020-08-07 18:48:15 -07:00
Bjorn Helgaas 6585a1a14e Merge branch 'pci/virtualization'
- Remove redundant variable init in xen (Colin Ian King)

- Add pci_pri_supported() to check device or associated PF for PRI support
  (Ashok Raj)

- Mark AMD Navi10 GPU rev 0x00 ATS as broken (Kai-Heng Feng)

- Release IVRS table in AMD ACS quirk (Hanjun Guo)

* pci/virtualization:
  PCI: Release IVRS table in AMD ACS quirk
  PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken
  PCI/ATS: Add pci_pri_supported() to check device or associated PF
  xen: Remove redundant initialization of irq
2020-08-05 18:24:17 -05:00
Colin Ian King 1c026a18d4 xen: Remove redundant initialization of irq
The variable irq is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20200611123134.922395-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-07-24 09:50:22 -05:00
Alexander A. Klimov 7ecd4a8175 PCI: Replace http:// links with https://
Replace http:// links with https:// links.  This reduces the likelihood of
man-in-the-middle attacks when developers open these links.

  Deterministic algorithm:
  For each file:
    If not .svg:
      For each line:
	If doesn't contain `\bxmlns\b`:
	  For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	    If both the HTTP and HTTPS versions
	    return 200 OK and serve the same content:
	      Replace HTTP with HTTPS.

[bhelgaas: also update samsung.com links, drop sourceforge link]
Link: https://lore.kernel.org/r/20200627103050.71712-1-grandmaster@al2klimov.de
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-06-30 13:05:09 -05:00
Christoph Hellwig 25f12ae45f maccess: rename probe_kernel_address to get_kernel_nofault
Better describe what this helper does, and match the naming of
copy_from_kernel_nofault.

Also switch the argument order around, so that it acts and looks
like get_user().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-18 11:14:40 -07:00
Bjorn Helgaas 39a1af7619 Merge branch 'pci/virtualization'
- Remove unused xen_register_pirq() parameter (Wei Liu)

  - Quirk AMD Matisse HD Audio & USB 3.0 devices where FLR hangs the device
    (Marcos Scriven)

  - Quirk AMD Starship USB 3.0 device where FLR doesn't seem to work (Kevin
    Buettner)

  - Add ACS quirk for Intel RCiEPs (Ashok Raj)

* pci/virtualization:
  PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints
  PCI: Avoid FLR for AMD Starship USB 3.0
  PCI: Avoid FLR for AMD Matisse HD Audio & USB 3.0
  x86/PCI: Drop unused xen_register_pirq() gsi_override parameter
2020-06-04 12:59:13 -05:00
Wei Liu 60369a4f8d x86/PCI: Drop unused xen_register_pirq() gsi_override parameter
All callers of xen_register_pirq() pass -1 (no override) for the
gsi_override parameter.  Remove it and related code.

Link: https://lore.kernel.org/r/20200428153640.76476-1-wei.liu@kernel.org
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2020-05-27 16:18:43 -05:00
Xiaochun Lee 1574051e52 x86/PCI: Mark Intel C620 MROMs as having non-compliant BARs
The Intel C620 Platform Controller Hub has MROM functions that have non-PCI
registers (undocumented in the public spec) where BAR 0 is supposed to be,
which results in messages like this:

  pci 0000:00:11.0: [Firmware Bug]: reg 0x30: invalid BAR (can't size)

Mark these MROM functions as having non-compliant BARs so we don't try to
probe any of them.  There are no other BARs on these devices.

See the Intel C620 Series Chipset Platform Controller Hub Datasheet,
May 2019, Document Number 336067-007US, sec 2.1, 35.5, 35.6.

[bhelgaas: commit log, add 0xa26d]
Link: https://lore.kernel.org/r/1589513467-17070-1-git-send-email-lixiaochun.2888@163.com
Signed-off-by: Xiaochun Lee <lixc17@lenovo.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
2020-05-15 14:19:50 -05:00
Linus Torvalds 26dca6dbd6 pci-v5.6-changes
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Merge tag 'pci-v5.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

 "Resource management:

   - Improve resource assignment for hot-added nested bridges, e.g.,
     Thunderbolt (Nicholas Johnson)

  Power management:

   - Optionally print config space of devices before suspend (Chen Yu)

   - Increase D3 delay for AMD Ryzen5/7 XHCI controllers (Daniel Drake)

  Virtualization:

   - Generalize DMA alias quirks (James Sewart)

   - Add DMA alias quirk for PLX PEX NTB (James Sewart)

   - Fix IOV memory leak (Navid Emamdoost)

  AER:

   - Log which device prevents error recovery (Yicong Yang)

  Peer-to-peer DMA:

   - Whitelist Intel SkyLake-E (Armen Baloyan)

  Broadcom iProc host bridge driver:

   - Apply PAXC quirk whether driver is built-in or module (Wei Liu)

  Broadcom STB host bridge driver:

   - Add Broadcom STB PCIe host controller driver (Jim Quinlan)

  Intel Gateway SoC host bridge driver:

   - Add driver for Intel Gateway SoC (Dilip Kota)

  Intel VMD host bridge driver:

   - Add support for DMA aliases on other buses (Jon Derrick)

   - Remove dma_map_ops overrides (Jon Derrick)

   - Remove now-unused X86_DEV_DMA_OPS (Christoph Hellwig)

  NVIDIA Tegra host bridge driver:

   - Fix Tegra30 afi_pex2_ctrl register offset (Marcel Ziswiler)

  Panasonic UniPhier host bridge driver:

   - Remove module code since driver can't be built as a module
     (Masahiro Yamada)

  Qualcomm host bridge driver:

   - Add support for SDM845 PCIe controller (Bjorn Andersson)

  TI Keystone host bridge driver:

   - Fix "num-viewport" DT property error handling (Kishon Vijay Abraham I)

   - Fix link training retries initiation (Yurii Monakov)

   - Fix outbound region mapping (Yurii Monakov)

  Misc:

   - Add Switchtec Gen4 support (Kelvin Cao)

   - Add Switchtec Intercomm Notify and Upstream Error Containment
     support (Logan Gunthorpe)

   - Use dma_set_mask_and_coherent() since Switchtec supports 64-bit
     addressing (Wesley Sheng)"

* tag 'pci-v5.6-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (60 commits)
  PCI: Allow adjust_bridge_window() to shrink resource if necessary
  PCI: Set resource size directly in adjust_bridge_window()
  PCI: Rename extend_bridge_window() to adjust_bridge_window()
  PCI: Rename extend_bridge_window() parameter
  PCI: Consider alignment of hot-added bridges when assigning resources
  PCI: Remove local variable usage in pci_bus_distribute_available_resources()
  PCI: Pass size + alignment to pci_bus_distribute_available_resources()
  PCI: Rename variables
  PCI: vmd: Add two VMD Device IDs
  PCI: Remove unnecessary braces
  PCI: brcmstb: Add MSI support
  PCI: brcmstb: Add Broadcom STB PCIe host controller driver
  x86/PCI: Remove X86_DEV_DMA_OPS
  PCI: vmd: Remove dma_map_ops overrides
  iommu/vt-d: Remove VMD child device sanity check
  iommu/vt-d: Use pci_real_dma_dev() for mapping
  PCI: Introduce pci_real_dma_dev()
  x86/PCI: Expose VMD's pci_dev in struct pci_sysdata
  x86/PCI: Add to_pci_sysdata() helper
  PCI/AER: Initialize aer_fifo
  ...
2020-01-31 14:48:54 -08:00
Linus Torvalds 634cd4b6af Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Cleanup of the GOP [graphics output] handling code in the EFI stub

   - Complete refactoring of the mixed mode handling in the x86 EFI stub

   - Overhaul of the x86 EFI boot/runtime code

   - Increase robustness for mixed mode code

   - Add the ability to disable DMA at the root port level in the EFI
     stub

   - Get rid of RWX mappings in the EFI memory map and page tables,
     where possible

   - Move the support code for the old EFI memory mapping style into its
     only user, the SGI UV1+ support code.

   - plus misc fixes, updates, smaller cleanups.

  ... and due to interactions with the RWX changes, another round of PAT
  cleanups make a guest appearance via the EFI tree - with no side
  effects intended"

* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
  efi/x86: Disable instrumentation in the EFI runtime handling code
  efi/libstub/x86: Fix EFI server boot failure
  efi/x86: Disallow efi=old_map in mixed mode
  x86/boot/compressed: Relax sed symbol type regex for LLVM ld.lld
  efi/x86: avoid KASAN false positives when accessing the 1: 1 mapping
  efi: Fix handling of multiple efi_fake_mem= entries
  efi: Fix efi_memmap_alloc() leaks
  efi: Add tracking for dynamically allocated memmaps
  efi: Add a flags parameter to efi_memory_map
  efi: Fix comment for efi_mem_type() wrt absent physical addresses
  efi/arm: Defer probe of PCIe backed efifb on DT systems
  efi/x86: Limit EFI old memory map to SGI UV machines
  efi/x86: Avoid RWX mappings for all of DRAM
  efi/x86: Don't map the entire kernel text RW for mixed mode
  x86/mm: Fix NX bit clearing issue in kernel_map_pages_in_pgd
  efi/libstub/x86: Fix unused-variable warning
  efi/libstub/x86: Use mandatory 16-byte stack alignment in mixed mode
  efi/libstub/x86: Use const attribute for efi_is_64bit()
  efi: Allow disabling PCI busmastering on bridges during boot
  efi/x86: Allow translating 64-bit arguments for mixed mode calls
  ...
2020-01-28 09:03:40 -08:00
Christoph Hellwig dab0198413 x86/PCI: Remove X86_DEV_DMA_OPS
There are no users of X86_DEV_DMA_OPS left, so remove the code.

Link: https://lore.kernel.org/r/1579613871-301529-8-git-send-email-jonathan.derrick@intel.com
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jon Derrick <jonathan.derrick@intel.com>
2020-01-24 15:00:35 -06:00
Jon Derrick 2856ba6020 PCI: Introduce pci_real_dma_dev()
The current DMA alias implementation requires the aliased device be on the
same PCI bus as the requester ID.  Add an arch-specific mechanism to point
to another PCI device when doing mapping and PCI DMA alias search.  The
default case returns the actual device.

Link: https://lore.kernel.org/r/1579613871-301529-4-git-send-email-jonathan.derrick@intel.com
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Christoph Hellwig <hch@lst.de>
2020-01-24 14:55:26 -06:00
Christoph Hellwig 4bdc0d676a remove ioremap_nocache and devm_ioremap_nocache
ioremap has provided non-cached semantics by default since the Linux 2.6
days, so remove the additional ioremap_nocache interface.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2020-01-06 09:45:59 +01:00
Ingo Molnar eb243d1d28 x86/mm/pat: Rename <asm/pat.h> => <asm/memtype.h>
pat.h is a file whose main purpose is to provide the memtype_*() APIs.

PAT is the low level hardware mechanism - but the high level abstraction
is memtype.

So name the header <memtype.h> as well - this goes hand in hand with memtype.c
and memtype_interval.c.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-12-10 10:12:55 +01:00