| Commit message (Collapse) | Author | Age |
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Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183.
Signed-off-by: Tim Sander <tim@krieglstein.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
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* pci/host-vmd:
x86/PCI: Add driver for Intel Volume Management Device (VMD)
PCI/AER: Use 32 bit PCI domain numbers
x86/PCI: Allow DMA ops specific to a PCI domain
irqdomain: Export irq_domain_set_info() for module use
genirq/MSI: Relax msi_domain_alloc() to support parentless MSI irqdomains
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The Intel Volume Management Device (VMD) supports 32-bit domain numbers.
To accommodate this, use u32 instead of u16 to store domain numbers.
[bhelgaas: changelog]
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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* pci/hotplug:
PCI: ibmphp: Remove unneeded NULL test
PCI: hotplug: Use list_for_each_entry() to simplify code
PCI: acpiphp_ibm: Fix null dereferences on null ibm_slot
* pci/resource:
PCI: Avoid iterating through memory outside the resource window
PCI: Fix minimum allocation address overwrite
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If the 'image' pointer has been advanced more than 'size', we've already
iterated through memory outside the resource window.
We have zero control over whatever we find in the option ROM, if it's even
an option ROM and not just an accident of random data just happening to
look like an option ROM.
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Commit 36e097a8a297 ("PCI: Split out bridge window override of minimum
allocation address") claimed to do no functional changes but unfortunately
did: The "min" variable is altered. At least the AVM A1 PCMCIA adapter was
no longer detected, breaking ISDN operation.
Use a local copy of "min" to restore the previous behaviour.
[bhelgaas: avoid gcc "?:" extension for portability and readability]
Fixes: 36e097a8a297 ("PCI: Split out bridge window override of minimum allocation address")
Signed-off-by: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v3.14+
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Remove unneeded NULL test. The index variable of list_for_each_entry is
never NULL, as it is the structure that contains the list pointer.
Generated by: scripts/coccinelle/iterators/itnull.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Geliang Tang <geliangtang@163.com>
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Use list_for_each_entry() instead of list_for_each() to simplify the code.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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ibm_slot_from_id() can return null if the des header signature is not
"aPCI" or if the kmalloc() for the return ACPI descriptor fails, causing
potential null pointer dereferences on the return null descriptor.
Handle the null case with appropriate check and error return.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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'pci/host-qcom' and 'pci/host-rcar' into next
* pci/host:
PCI: host: Add of_pci_get_host_bridge_resources() stub
PCI: host: Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD
* pci/host-designware:
PCI: designware: Make config accessor override checking symmetric
PCI: designware: Simplify control flow
* pci/host-hisi:
PCI: hisi: Add support for HiSilicon Hip06 PCIe host controllers
* pci/host-qcom:
ARM: dts: ifc6410: enable PCIe DT node for this board
ARM: dts: apq8064: add PCIe devicetree node
PCI: qcom: Add Qualcomm PCIe controller driver
PCI: qcom: Document PCIe devicetree bindings
PCI: designware: Ensure ATU is enabled before IO/conf space accesses
* pci/host-rcar:
PCI: rcar: Add Gen2 PHY setup to pcie-rcar
PCI: rcar: Add runtime PM support to pcie-rcar
PCI: rcar: Remove unused pci_sys_data struct from pcie-rcar
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For PCIe compliance, the PHY registers need setting as per the manual.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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If runtime PM is enabled in the kernel config, simply enable the clocks
once during probe.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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The pci_sys_data struct was previously used by pci_common_init_dev() and by
the ARM pcibios_align_resource(), but recent commits removed those uses:
cbce7900598c ("PCI: designware: Make driver arch-agnostic")
b3a72384fe29 ("ARM/PCI: Replace pci_sys_data->align_resource with global function pointer")
cbce7900598c removed the use of pci_common_init_dev() by DesignWare
drivers, including pcie-rcar.c, and b3a72384fe29 removed the use of struct
pci_sys_data by the ARM pcibios_align_resource().
Remove struct pci_sys_data from pcie-rcar.c.
[bhelgaas: changelog]
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The PCIe driver reuses the Designware common code for host and MSI
initialization, and also programs the Qualcomm application specific
registers.
[bhelgaas: remove COMPILE_TEST Kconfig dependency]
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Read back the ATU CR2 register to ensure ATU programming is effective
before any subsequent I/O or config space accesses.
Without this, PCI device enumeration is unreliable.
[bhelgaas: changelog, comment]
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
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Add support for the HiSilicon Hip06 SoC. Documentation has been updated to
include Hip06. Add Gabriele Paoloni as maintainer of the driver.
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
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Drivers based on the DesignWare core can override the config read accessors
by supplying rd_own_conf() and rd_other_conf() function pointers.
dw_pcie_rd_conf() calls dw_pcie_rd_own_conf() (for accesses to the root
bus) or dw_pcie_rd_other_conf():
dw_pcie_rd_conf
dw_pcie_rd_own_conf # if on root bus
dw_pcie_rd_other_conf # if not on root bus
Previously we checked for rd_other_conf() directly in dw_pcie_rd_conf(),
but we checked for rd_own_conf() in dw_pcie_rd_own_conf().
Check for rd_other_conf() in dw_pcie_rd_other_conf() to make this symmetric
with the rd_own_conf() checking, and similarly for the write path.
No functional change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
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Return values immediately when possible to simplify the control flow.
No functional change intended. Folded in unused variable removal as
pointed out by Fabio Estevam <fabio.estevam@nxp.com>, Arnd Bergmann
<arnd@arndb.de>, and Thierry Reding <thierry.reding@gmail.com>.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Pratyush Anand <pratyush.anand@gmail.com>
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On -RT and if kernel is booting with "threadirqs" cmd line parameter,
PCIe/PCI (MSI) IRQ cascade handlers (like dra7xx_pcie_msi_irq_handler())
will be forced threaded and, as result, will generate warnings like this:
WARNING: CPU: 1 PID: 82 at kernel/irq/handle.c:150 handle_irq_event_percpu+0x14c/0x174()
irq 460 handler irq_default_primary_handler+0x0/0x14 enabled interrupts
Backtrace:
(warn_slowpath_common) from (warn_slowpath_fmt+0x38/0x40)
(warn_slowpath_fmt) from (handle_irq_event_percpu+0x14c/0x174)
(handle_irq_event_percpu) from (handle_irq_event+0x84/0xb8)
(handle_irq_event) from (handle_simple_irq+0x90/0x118)
(handle_simple_irq) from (generic_handle_irq+0x30/0x44)
(generic_handle_irq) from (dra7xx_pcie_msi_irq_handler+0x7c/0x8c)
(dra7xx_pcie_msi_irq_handler) from (irq_forced_thread_fn+0x28/0x5c)
(irq_forced_thread_fn) from (irq_thread+0x128/0x204)
This happens because all of them invoke generic_handle_irq() from the
requested handler. generic_handle_irq() grabs raw_locks and thus needs to
run in raw-IRQ context.
This issue was originally reproduced on TI dra7-evem, but, as was
identified during discussion [1], other hosts can also suffer from this
issue. Fix all them at once by marking PCIe/PCI (MSI) IRQ cascade handlers
IRQF_NO_THREAD explicitly.
[1] http://lkml.kernel.org/r/1448027966-21610-1-git-send-email-grygorii.strashko@ti.com
[bhelgaas: add stable tag, fix typos]
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lucas Stach <l.stach@pengutronix.de> (for imx6)
CC: stable@vger.kernel.org
CC: Kishon Vijay Abraham I <kishon@ti.com>
CC: Jingoo Han <jingoohan1@gmail.com>
CC: Kukjin Kim <kgene@kernel.org>
CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
CC: Richard Zhu <Richard.Zhu@freescale.com>
CC: Thierry Reding <thierry.reding@gmail.com>
CC: Stephen Warren <swarren@wwwdotorg.org>
CC: Alexandre Courbot <gnurou@gmail.com>
CC: Simon Horman <horms@verge.net.au>
CC: Pratyush Anand <pratyush.anand@gmail.com>
CC: Michal Simek <michal.simek@xilinx.com>
CC: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
CC: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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'pci/host-rcar' into next
* pci/host-generic:
PCI: generic,versatile: Remove unused pci_sys_data structures
* pci/host-imx6:
PCI: imx6: Add support for active-low reset GPIO
PCI: imx6: Use gpio_set_value_cansleep()
* pci/host-iproc:
PCI: iproc: Add iProc PCIe MSI support
PCI: iproc: Add iProc PCIe MSI device tree binding
PCI: iproc: Add PAXC interface support
PCI: iproc: Update iProc PCIe device tree binding
PCI: iproc: Do not use 0x in front of %pap
PCI: iproc: Hide CONFIG_PCIE_IPROC
* pci/host-rcar:
PCI: rcar: Add gen2 fallback compatibility string for pcie-rcar
PCI: rcar: Add gen2 fallback compatibility string for pci-rcar-gen2
PCI: rcar: Add support for R-Car H3 to pcie-rcar
Revert "PCI: rcar: Build pcie-rcar.c only on ARM"
PCI: rcar: Convert to DT resource parsing API
PCI: rcar: Allow DT to override default window settings
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Add fallback compatibility string for R-Car Gen 2 family. This is in
keeping with the fallback scheme being adopted wherever appropriate for
drivers for Renesas SoCs.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Add fallback compatibility string for R-Car Gen 2 family. This is in
keeping with the fallback scheme being adopted wherever appropriate for
drivers for Renesas SoCs.
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
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Add the "renesas,pcie-r8a7795" property for the R-Car H3 device to the
pcie-rcar driver.
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Harunobu Kurokawa <harunobu.kurokawa.dn@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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Now that we can build on arm64, revert commit 7c537c67d2e4
("PCI: rcar: Build pcie-rcar.c only on ARM").
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The main purpose of this change is to avoid calling pci_ioremap_io() as
this is not available on arm64. However, instead of doing the range
parsing in this driver we can utilise of_pci_get_host_bridge_resources().
This is similar to changes made to the generic PCI host driver in commit
dbf9826d5797 ("PCI: generic: Convert to DT resource parsing API")
Reported-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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If the DTB specifies dma-ranges, use those values. Otherwise, default to
the values that were previously hardcoded into the driver.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
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Add PCIe MSI support for both PAXB and PAXC interfaces on all iProc-based
platforms.
The iProc PCIe MSI support deploys an event queue-based implementation.
Each event queue is serviced by a GIC interrupt and can support up to 64
MSI vectors. Host memory is allocated for the event queues, and each event
queue consists of 64 word-sized entries. MSI data is written to the lower
16-bit of each entry, whereas the upper 16-bit of the entry is reserved for
the controller for internal processing.
Each event queue is tracked by a head pointer and tail pointer. Head
pointer indicates the next entry in the event queue to be processed by
the driver and is updated by the driver after processing is done.
The controller uses the tail pointer as the next MSI data insertion
point. The controller ensures MSI data is flushed to host memory before
updating the tail pointer and then triggering the interrupt.
MSI IRQ affinity is supported by evenly distributing the interrupts to each
CPU core. MSI vector is moved from one GIC interrupt to another in order
to steer to the target CPU.
Therefore, the actual number of supported MSI vectors is:
M * 64 / N
where M denotes the number of GIC interrupts (event queues), and N denotes
the number of CPU cores.
This iProc event queue-based MSI support should not be used with newer
platforms with integrated MSI support in the GIC (e.g., giv2m or
gicv3-its).
[bhelgaas: fold in Kconfig fixes from Arnd Bergmann <arnd@arndb.de>]
Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Anup Patel <anup.patel@broadcom.com>
Reviewed-by: Vikram Prakash <vikramp@broadcom.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
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Traditionally, all iProc PCIe root complexes use PAXB-based wrapper, with
an integrated on-chip Serdes to support external endpoint devices. On
newer iProc platforms, a PAXC-based wrapper is introduced, for connection
with internally emulated PCIe endpoint devices in the ASIC.
Add support for PAXC-based iProc PCIe root complex in the iProc PCIe core
driver. This change factors out common logic between PAXB and PAXC, and
uses tables to store register offsets that are different between PAXB and
PAXC. This allows the driver to be scaled to support subsequent PAXC
revisions in the future.
Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Scott Branden <sbranden@broadcom.com>
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The "%pap" format adds a "0x" prefix, so using "0x%pap" results in output
of "0x0x...". Drop the "0x" prefix in the format string.
[bhelgaas: changelog]
Signed-off-by: Dmitry V. Krivenok <krivenok.dmitry@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Ray Jui <rjui@broadcom.com>
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PCIE_IPROC_BCMA does not require CONFIG_OF in Kconfig, but
CONFIG_PCIE_IPROC does, so we can get a warning when building for an ARM
platform without DT support:
warning: (PCIE_IPROC_PLATFORM && PCIE_IPROC_BCMA) selects PCIE_IPROC which has unmet direct dependencies (PCI && OF && (ARM || ARM64))
It turns out that CONFIG_PCIE_IPROC never needs to be enabled by a user
anyway, we can simply rely on it being selected implictly through either
PCIE_IPROC_PLATFORM or PCIE_IPROC_BCMA.
Fixes: 4785ffbdc9b5 ("PCI: iproc: Add BCMA PCIe driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
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We previously used of_get_named_gpio(), which ignores the OF flags cell, so
the reset GPIO defaulted to "active high." This doesn't work on the Toradex
Apalis SoM with Ixora base board, which has an active-low reset GPIO.
Use devm_gpiod_get_optional() instead so we pay attention to the active
high/low flag. This also adds support for GPIOs described via ACPI.
[bhelgaas: changelog]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
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We are in a context where we can sleep, and the PCIe reset gpio may be on
an I2C expander. Use the cansleep() variant when setting the GPIO value.
Based on a patch from Russell King for pci-mvebu.c.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
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Commit b3a72384fe29 ("ARM/PCI: Replace pci_sys_data->align_resource with
global function pointer") removed the struct pci_sys_data dependency from
the ARM pcibios functions that are part of the common ARM PCI arch
back-end, e.g., pcibios_align_resource(), so that struct pci_sys_data has
now become data that is only used internally by the ARM bios32 layer, i.e.,
pci_common_init_dev(), and by host controllers drivers callbacks, e.g.,
pci_sys_data.setup, that rely on the ARM bios32 API to probe.
PCI host controller drivers that do not rely on ARM bios32 calls to probe
do not need to have the pci_bus.sysdata pointer field pointing at a struct
pci_sys_data anymore, therefore it can be removed from the respective
drivers data structures.
Remove the pci_sys_data structures from the host controller drivers that do
not rely on ARM bios32 interface to scan the PCI bus, completing the
pci_sys_data clean-up and removing the related dependency on arch/arm
specific data.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
CC: Will Deacon <will.deacon@arm.com>
CC: Rob Herring <robh@kernel.org>
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* pci/aspm:
PCI/ASPM: Make sysfs link_state_store() consistent with link_state_show()
* pci/hotplug:
PCI: pciehp: Always protect pciehp_disable_slot() with hotplug mutex
* pci/misc:
x86/PCI: Simplify pci_bios_{read,write}
PCI: Simplify config space size computation
PCI: Limit config space size for Netronome NFP6000 family
PCI: Add Netronome vendor and device IDs
PCI: Support PCIe devices with short cfg_size
x86/PCI: Clarify AMD Fam10h config access restrictions comment
PCI: Print warnings for all invalid expansion ROM headers
PCI: Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmask
* pci/msi:
PCI/MSI: Remove empty pci_msi_init_pci_dev()
PCI/MSI: Initialize MSI capability for all architectures
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4a7cc8316705 ("genirq/MSI: Move msi_list from struct pci_dev to struct
device") removed the contents of pci_msi_init_pci_dev(). All
implementation of it are now empty, so remove it completely.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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1851617cd2da ("PCI/MSI: Disable MSI at enumeration even if kernel doesn't
support MSI") moved dev->msi_cap and dev->msix_cap initialization from the
pci_init_capabilities() path (used on all architectures) to the
pci_setup_device() path (not used on Open Firmware architectures).
This broke MSI or MSI-X on Open Firmware machines. 4d9aac397a5d
("powerpc/PCI: Disable MSI/MSI-X interrupts at PCI probe time in OF case")
fixed it for PowerPC but not for SPARC.
Set up MSI and MSI-X (initialize msi_cap and msix_cap and disable MSI and
MSI-X) in pci_init_capabilities() so all architectures do it the same way.
This reverts 4d9aac397a5d since this patch fixes the problem generically
for both PowerPC and SPARC.
[bhelgaas: changelog, make pci_msi_setup_pci_dev() static]
Fixes: 1851617cd2da ("PCI/MSI: Disable MSI at enumeration even if kernel doesn't support MSI")
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Restructure the logic so we return the config space size as soon as we know
it. This reduces indentation, removes negations, and removes gotos.
No functional change.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The NFP6000 has an erratum where reading/writing to PCI config space
addresses above 0x600 can cause the NFP to generate PCIe completion
timeouts.
Limit the NFP6000's config space size to 0x600 bytes.
Signed-off-by: Jason S. McMullan <jason.mcmullan@netronome.com>
[simon: edited changelog]
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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If a device quirk modifies the pci_dev->cfg_size to be less than
PCI_CFG_SPACE_EXP_SIZE (4096), but greater than PCI_CFG_SPACE_SIZE (256),
the PCI sysfs interface truncates the readable size to PCI_CFG_SPACE_SIZE.
Allow sysfs access to config space up to cfg_size, even if the device
doesn't support the entire 4096-byte PCIe config space.
Note that pci_read_config() and pci_write_config() limit access to
dev->cfg_size even though pcie_config_attr contains 4096 (the maximum
size).
Signed-off-by: Jason S. McMullan <jason.mcmullan@netronome.com>
[simon: edited changelog]
Signed-off-by: Simon Horman <simon.horman@netronome.com>
[bhelgaas: more changelog edits]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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We've always validated that both bytes of the Expansion ROM signature and
all four bytes of the PCI Data Structure signature (see PCI Firmware spec
r3.0, sec 5.1.1), but we only printed a warning if the first byte of the
ROM signature was invalid.
Print warnings if *any* of those bytes are invalid. Note that we only look
at these headers if we map or read the ROM.
[bhelgaas: changelog, tweak printk format]
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Bit 7 of the "Header Type" register indicates a multi-function device when
set. Bits 0-6 contain encoded values, where 0x1 indicates a PCI-PCI
bridge. It is incorrect to test this as though it were a mask.
For example, while the PCI 3.0 spec only defines values 0x0, 0x1, and 0x2,
it's conceivable that a future spec could define 0x3 to mean something
else; then tests for "(hdr_type & 0x7f) & PCI_HEADER_TYPE_BRIDGE" would
incorrectly succeed for this new 0x3 header type.
Test bits 0-6 of the Header Type for equality with PCI_HEADER_TYPE_BRIDGE.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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When called from pciehp_sysfs_disable_slot(), the call to
pciehp_disable_slot() was not protected by the hotplug mutex.
Hold slot->hotplug_lock while calling pciehp_disable_slot().
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rajat Jain <rajatxjain@gmail.com>
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If CONFIG_PCIEASPM_DEBUG is set, then PCI devices have a link_state
attribute. Reading that attribute shows the state as a bit mask: 1
means L0S upstream, 2 means L0S downstream, and 4 means L1.
Oddly, writing to link_state is inconsistent and gets translated, leading
to mysterious results in which the value you store isn't comparable the
value you load back out.
Fix it by making link_state_store() match link_state_show().
[bhelgaas: Check "aspm_disabled" *before* validating input. When
"aspm_disabled" is set, this changes the error for invalid input from
-EINVAL to -EPERM.]
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We've had quite busy weeks in this cycle. Looking at ALSA core, the
significant changes are a few fixes wrt timer and sequencer ioctls
that have been revealed by fuzzer recently. Other than that, ASoC
core got a few updates about DAI link handling, but these are rather
straightforward refactoring.
In drivers scene, ASoC received quite lots of new drivers in addition
to bunch of updates for still ongoing Intel Skylake support and
topology API. HD-audio gained a new HDMI/DP hotplug notification via
component. FireWire got a pile of code refactoring/updates with
SCS.1x driver integration.
More highlights are shown below.
[ NOTE: this contains also many commits for DRM. This is due to the
pull of drm stable branch into sound tree, as the base of i915 audio
component work for HD-audio. The highlights below don't contain
these DRM changes, as these are supposed to be pulled via drm tree
in anyway sooner or later. ]
Core:
- Handful fixes to harden ALSA timer and sequencer ioctls against
races reported by syzkaller fuzzer
- Irq description string can be unique to each card; only for
HD-audio for now
ASoC:
- Conversion of the array of DAI links to a list for supporting
dynamically adding and removing DAI links
- Topology API enhancements to make everything more component based
and being able to specify PCM links via topology
- Some more fixes for the topology code, though it is still not final
and ready for enabling in production; we really need to get to the
point where that can be done
- A pile of changes for Intel SkyLake drivers which hopefully deliver
some useful initial functionality for systems with this chipset,
though there is more work still to come
- Lots of new features and cleanups for the Renesas drivers
- ANC support for WM5110
- New drivers: Imagination Technologies IPs, Atmel class D speaker,
Cirrus CS47L24 and WM1831, Dialog DA7128, Realtek RT5659 and
RT56156, Rockchip RK3036, TI PC3168A, and AMD ACP
- Rename PCM1792a driver to be generic pcm179x
HD-Audio:
- Use audio component for i915 HDMI/DP hotplug handling
- On-demand binding with i915 driver
- bdl_pos_adj parameter adjustment for Baytrail controllers
- Enable power_save_node for CX20722; this shouldn't lead to
regression, hopefully
- Kabylake HDMI/DP codec support
- Quirks for Lenovo E50-80, Dell Latitude E-series, and other Dell
machines
- A few code refactoring
FireWire:
- Lots of code cleanup and refactoring
- Integrate the support of SCS.1x devices into snd-oxfw driver;
snd-scs1x driver is obsoleted
USB-audio:
- Fix possible NULL dereference at disconnection
- A regression fix for Native Instruments devices
Misc:
- A few code cleanups of fm801 driver"
* tag 'sound-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (722 commits)
ALSA: timer: Code cleanup
ALSA: timer: Harden slave timer list handling
ALSA: hda - Add fixup for Dell Latitidue E6540
ALSA: timer: Fix race among timer ioctls
ALSA: hda - add codec support for Kabylake display audio codec
ALSA: timer: Fix double unlink of active_list
ALSA: usb-audio: Fix mixer ctl regression of Native Instrument devices
ALSA: hda - fix the headset mic detection problem for a Dell laptop
ALSA: hda - Fix white noise on Dell Latitude E5550
ALSA: hda_intel: add card number to irq description
ALSA: seq: Fix race at timer setup and close
ALSA: seq: Fix missing NULL check at remove_events ioctl
ALSA: usb-audio: Avoid calling usb_autopm_put_interface() at disconnect
ASoC: hdac_hdmi: remove unused hdac_hdmi_query_pin_connlist
ASoC: AMD: Add missing include file
ALSA: hda - Fixup inverted internal mic for Lenovo E50-80
ALSA: usb: Add native DSD support for Oppo HA-1
ASoC: Make aux_dev more like a generic component
ASoC: bcm2835: cleanup includes by ordering them alphabetically
ASoC: AMD: Manage ACP 2.x SRAM banks power
...
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Conflicts:
drivers/gpu/drm/i915/intel_display.c
sound/soc/intel/skylake/skl.h
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Conflicts:
drivers/gpu/drm/i915/intel_pm.c
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We've picked up a few conflicts and it would be nice
to resolve them before we move onwards.
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git://anongit.freedesktop.org/drm-intel into drm-next
drm-intel-next-2015-11-20-rebased:
4 weeks because of my vacation, so a bit more:
- final bits of the typesafe register mmio functions (Ville)
- power domain fix for hdmi detection (Imre)
- tons of fixes and improvements to the psr code (Rodrigo)
- refactoring of the dp detection code (Ander)
- complete rework of the dmc loader and dc5/dc6 handling (Imre, Patrik and
others)
- dp compliance improvements from Shubhangi Shrivastava
- stop_machine hack from Chris to fix corruptions when updating GTT ptes on bsw
- lots of fifo underrun fixes from Ville
- big pile of fbc fixes and improvements from Paulo
- fix fbdev failures paths (Tvrtko and Lukas Wunner)
- dp link training refactoring (Ander)
- interruptible prepare_plane for atomic (Maarten)
- basic kabylake support (Deepak&Rodrigo)
- don't leak ringspace on resets (Chris)
drm-intel-next-2015-10-23:
- 2nd attempt at atomic watermarks from Matt, but just prep for now
- fixes all over
* tag 'drm-intel-next-2015-11-20-merged' of git://anongit.freedesktop.org/drm-intel: (209 commits)
drm/i915: Update DRIVER_DATE to 20151120
drm/i915: take a power domain reference while checking the HDMI live status
drm/i915: take a power domain ref only when needed during HDMI detect
drm/i915: Tear down fbdev if initialization fails
async: export current_is_async()
Revert "drm/i915: Initialize HWS page address after GPU reset"
drm/i915: Fix oops caused by fbdev initialization failure
drm/i915: Fix i915_ggtt_view_equal to handle rotation correctly
drm/i915: Stuff rotation params into view union
drm/i915: Drop return value from intel_fill_fb_ggtt_view
drm/i915 : Fix to remove unnecsessary checks in postclose function.
drm/i915: add MISSING_CASE to a few port/aux power domain helpers
drm/i915/ddi: fix intel_display_port_aux_power_domain() after HDMI detect
drm/i915: Remove platform specific *_dp_detect() functions
drm/i915: Don't do edp panel detection in g4x_dp_detect()
drm/i915: Send TP1 TP2/3 even when panel claims no NO_TRAIN_ON_EXIT.
drm/i915: PSR: Don't Skip aux handshake on DP_PSR_NO_TRAIN_ON_EXIT.
drm/i915: Reduce PSR re-activation time for VLV/CHV.
drm/i915: Delay first PSR activation.
drm/i915: Type safe register read/write
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Linux 4.4-rc2
Backmerge to get at
commit 1b0e3a049efe471c399674fd954500ce97438d30
Author: Imre Deak <imre.deak@intel.com>
Date: Thu Nov 5 23:04:11 2015 +0200
drm/i915/skl: disable display side power well support for now
so that we can proplery re-eanble skl power wells in -next.
Conflicts are just adjacent lines changed, except for intel_fbdev.c
where we need to interleave the changs. Nothing nefarious.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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i915 register defines are going to become type safe, so going forward
the register defines can't be used as straight numbers. Since quirks.c
needs just a few extra register defines from i915_reg.h, decouple the
two by defining the required registers locally in quirks.c. This was
already done for a few other igpu related registers.
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1446672017-24497-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
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