Commit Graph

878 Commits

Author SHA1 Message Date
Jon Hunter
e22051e7c9 PCI: tegra194: Fix tegra_pcie_ep_raise_msi_irq() ill-defined shift
[ Upstream commit f67092eff2bd40650aad54a1a1910160f41d864a ]

tegra_pcie_ep_raise_msi_irq() shifted a signed 32-bit value left by 31
bits.  The behavior of this is implementation-defined.

Replace the shift by BIT(), which is well-defined.

Found by cppcheck:

  $ cppcheck --enable=all drivers/pci/controller/dwc/pcie-tegra194.c
  Checking drivers/pci/controller/dwc/pcie-tegra194.c ...

  drivers/pci/controller/dwc/pcie-tegra194.c:1829:23: portability: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour. See condition at line 1826.  [shiftTooManyBitsSigned]

  appl_writel(pcie, (1 << irq), APPL_MSI_CTRL_1);
                     ^

[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20210618160219.303092-1-jonathanh@nvidia.com
Fixes: c57247f940 ("PCI: tegra: Add support for PCIe endpoint mode in Tegra194")
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:52 +02:00
Martin Blumenstingl
12d84de59d PCI: intel-gw: Fix INTx enable
[ Upstream commit 655832d12f2251e04031294f547c86935a0a126d ]

The legacy PCI interrupt lines need to be enabled using PCIE_APP_IRNEN bits
13 (INTA), 14 (INTB), 15 (INTC) and 16 (INTD). The old code however was
taking (for example) "13" as raw value instead of taking BIT(13).  Define
the legacy PCI interrupt bits using the BIT() macro and then use these in
PCIE_APP_IRN_INT.

Link: https://lore.kernel.org/r/20210106135540.48420-1-martin.blumenstingl@googlemail.com
Fixes: ed22aaaede ("PCI: dwc: intel: PCIe RC controller driver")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rahul Tanwar <rtanwar@maxlinear.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:52 +02:00
Sandor Bodo-Merle
607caa0801 PCI: iproc: Support multi-MSI only on uniprocessor kernel
[ Upstream commit 2dc0a201d0f59e6818ef443609f0850a32910844 ]

The interrupt affinity scheme used by this driver is incompatible with
multi-MSI as it implies moving the doorbell address to that of another MSI
group.  This isn't possible for multi-MSI, as all the MSIs must have the
same doorbell address. As such it is restricted to systems with a single
CPU.

Link: https://lore.kernel.org/r/20210622152630.40842-2-sbodomerle@gmail.com
Fixes: fc54bae288 ("PCI: iproc: Allow allocation of multiple MSIs")
Reported-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sandor Bodo-Merle <sbodomerle@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Pali Rohár <pali@kernel.org>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:52 +02:00
Sandor Bodo-Merle
54dc6fcce3 PCI: iproc: Fix multi-MSI base vector number allocation
[ Upstream commit e673d697b9a234fc3544ac240e173cef8c82b349 ]

Commit fc54bae288 ("PCI: iproc: Allow allocation of multiple MSIs")
introduced multi-MSI support with a broken allocation mechanism (it failed
to reserve the proper number of bits from the inner domain).  Natural
alignment of the base vector number was also not guaranteed.

Link: https://lore.kernel.org/r/20210622152630.40842-1-sbodomerle@gmail.com
Fixes: fc54bae288 ("PCI: iproc: Allow allocation of multiple MSIs")
Reported-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Sandor Bodo-Merle <sbodomerle@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Pali Rohár <pali@kernel.org>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:51 +02:00
Javier Martinez Canillas
d420b11666 PCI: rockchip: Register IRQ handlers after device and data are ready
[ Upstream commit 3cf5f7ab230e2b886e493c7a8449ed50e29d2b98 ]

An IRQ handler may be called at any time after it is registered, so
anything it relies on must be ready before registration.

rockchip_pcie_subsys_irq_handler() and rockchip_pcie_client_irq_handler()
read registers in the PCIe controller, but we registered them before
turning on clocks to the controller.  If either is called before the clocks
are turned on, the register reads fail and the machine hangs.

Similarly, rockchip_pcie_legacy_int_handler() uses rockchip->irq_domain,
but we installed it before initializing irq_domain.

Register IRQ handlers after their data structures are initialized and
clocks are enabled.

Found by enabling CONFIG_DEBUG_SHIRQ, which calls the IRQ handler when it
is being unregistered.  An error during the probe path might cause this
unregistration and IRQ handler execution before the device or data
structure init has finished.

[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20210608080409.1729276-1-javierm@redhat.com
Reported-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:49 +02:00
Zou Wei
6e43cdcbb7 PCI: tegra: Add missing MODULE_DEVICE_TABLE
[ Upstream commit 7bf475a4614a9722b9b989e53184a02596cf16d1 ]

Add missing MODULE_DEVICE_TABLE definition so we generate correct modalias
for automatic loading of this driver when it is built as a module.

Link: https://lore.kernel.org/r/1620792422-16535-1-git-send-email-zou_wei@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Vidya Sagar <vidyas@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:48 +02:00
Long Li
7667cdc4b7 PCI: hv: Fix a race condition when removing the device
[ Upstream commit 94d22763207ac6633612b8d8e0ca4fba0f7aa139 ]

On removing the device, any work item (hv_pci_devices_present() or
hv_pci_eject_device()) scheduled on workqueue hbus->wq may still be running
and race with hv_pci_remove().

This can happen because the host may send PCI_EJECT or PCI_BUS_RELATIONS(2)
and decide to rescind the channel immediately after that.

Fix this by flushing/destroying the workqueue of hbus before doing hbus remove.

Link: https://lore.kernel.org/r/1620806800-30983-1-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:47 +02:00
Randy Dunlap
0df49cdc7c PCI: ftpci100: Rename macro name collision
[ Upstream commit 5be967d5016ac5ffb9c4d0df51b48441ee4d5ed1 ]

PCI_IOSIZE is defined in mach-loongson64/spaces.h, so change the name
of the PCI_* macros in pci-ftpci100.c to use FTPCI_* so that they are
more localized and won't conflict with other drivers or arches.

../drivers/pci/controller/pci-ftpci100.c:37: warning: "PCI_IOSIZE" redefined
   37 | #define PCI_IOSIZE 0x00
      |
In file included from ../arch/mips/include/asm/addrspace.h:13,
...              from ../drivers/pci/controller/pci-ftpci100.c:15:
arch/mips/include/asm/mach-loongson64/spaces.h:11: note: this is the location of the previous definition
   11 | #define PCI_IOSIZE SZ_16M

Suggested-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210517234117.3660-1-rdunlap@infradead.org
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Krzysztof Wilczyński <kw@linux.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:05:46 +02:00
Pali Rohár
e2c1218ddc PCI: aardvark: Implement workaround for the readback value of VEND_ID
commit 7f71a409fe3d9358da07c77f15bb5b7960f12253 upstream.

Marvell Armada 3700 Functional Errata, Guidelines, and Restrictions
document describes in erratum 4.1 PCIe value of vendor ID (Ref #: 243):

    The readback value of VEND_ID (RD0070000h [15:0]) is 1B4Bh, while it
    should read 11ABh.

    The firmware can write the correct value, 11ABh, through VEND_ID
    (RD0076044h [15:0]).

Implement this workaround in aardvark driver for both PCI vendor id and PCI
subsystem vendor id.

This change affects and fixes PCI vendor id of emulated PCIe root bridge.
After this change emulated PCIe root bridge has correct vendor id.

Link: https://lore.kernel.org/r/20210624222621.4776-5-pali@kernel.org
Fixes: 8a3ebd8de3 ("PCI: aardvark: Implement emulated root PCI bridge config space")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Marek Behún <kabel@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-19 09:45:01 +02:00
Pali Rohár
1309197089 PCI: aardvark: Fix checking for PIO Non-posted Request
commit 8ceeac307a79f68c0d0c72d6e48b82fa424204ec upstream.

PIO_NON_POSTED_REQ for PIO_STAT register is incorrectly defined. Bit 10 in
register PIO_STAT indicates the response is to a non-posted request.

Link: https://lore.kernel.org/r/20210624213345.3617-2-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Marek Behún <kabel@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-19 09:45:01 +02:00
Haiyang Zhang
998d9fefdd PCI: hv: Add check for hyperv_initialized in init_hv_pci_drv()
[ Upstream commit 7d815f4afa87f2032b650ae1bba7534b550a6b8b ]

Add check for hv_is_hyperv_initialized() at the top of
init_hv_pci_drv(), so if the pci-hyperv driver is force-loaded on non
Hyper-V platforms, the init_hv_pci_drv() will exit immediately, without
any side effects, like assignments to hvpci_block_ops, etc.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reported-and-tested-by: Mohammad Alqayeem <mohammad.alqyeem@nutanix.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/1621984653-1210-1-git-send-email-haiyangz@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:56:00 +02:00
Pali Rohár
1a1dbc4473 PCI: aardvark: Fix kernel panic during PIO transfer
commit f18139966d072dab8e4398c95ce955a9742e04f7 upstream.

Trying to start a new PIO transfer by writing value 0 in PIO_START register
when previous transfer has not yet completed (which is indicated by value 1
in PIO_START) causes an External Abort on CPU, which results in kernel
panic:

    SError Interrupt on CPU0, code 0xbf000002 -- SError
    Kernel panic - not syncing: Asynchronous SError Interrupt

To prevent kernel panic, it is required to reject a new PIO transfer when
previous one has not finished yet.

If previous PIO transfer is not finished yet, the kernel may issue a new
PIO request only if the previous PIO transfer timed out.

In the past the root cause of this issue was incorrectly identified (as it
often happens during link retraining or after link down event) and special
hack was implemented in Trusted Firmware to catch all SError events in EL3,
to ignore errors with code 0xbf000002 and not forwarding any other errors
to kernel and instead throw panic from EL3 Trusted Firmware handler.

Links to discussion and patches about this issue:
https://git.trustedfirmware.org/TF-A/trusted-firmware-a.git/commit/?id=3c7dcdac5c50
https://lore.kernel.org/linux-pci/20190316161243.29517-1-repk@triplefau.lt/
https://lore.kernel.org/linux-pci/971be151d24312cc533989a64bd454b4@www.loen.fr/
https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/1541

But the real cause was the fact that during link retraining or after link
down event the PIO transfer may take longer time, up to the 1.44s until it
times out. This increased probability that a new PIO transfer would be
issued by kernel while previous one has not finished yet.

After applying this change into the kernel, it is possible to revert the
mentioned TF-A hack and SError events do not have to be caught in TF-A EL3.

Link: https://lore.kernel.org/r/20210608203655.31228-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Marek Behún <kabel@kernel.org>
Cc: stable@vger.kernel.org # 7fbcb5da81 ("PCI: aardvark: Don't rely on jiffies while holding spinlock")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-23 14:42:51 +02:00
Dinghao Liu
4800a98bcf PCI: tegra: Fix runtime PM imbalance in pex_ep_event_pex_rst_deassert()
[ Upstream commit 5859c926d1f052ee61b5815b14658875c14f6243 ]

pm_runtime_get_sync() will increase the runtime PM counter
even it returns an error. Thus a pairing decrement is needed
to prevent refcount leak. Fix this by replacing this API with
pm_runtime_resume_and_get(), which will not change the runtime
PM counter on error.

Link: https://lore.kernel.org/r/20210408072700.15791-1-dinghao.liu@zju.edu.cn
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-22 11:40:52 +02:00
Arnd Bergmann
13a2ca80d7 PCI: thunder: Fix compile testing
[ Upstream commit 16f7ae5906dfbeff54f74ec75d0563bb3a87ab0b ]

Compile-testing these drivers is currently broken. Enabling it causes a
couple of build failures though:

  drivers/pci/controller/pci-thunder-ecam.c:119:30: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
  drivers/pci/controller/pci-thunder-pem.c:54:2: error: implicit declaration of function 'writeq' [-Werror,-Wimplicit-function-declaration]
  drivers/pci/controller/pci-thunder-pem.c:392:8: error: implicit declaration of function 'acpi_get_rc_resources' [-Werror,-Wimplicit-function-declaration]

Fix them with the obvious one-line changes.

Link: https://lore.kernel.org/r/20210308152501.2135937-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Robert Richter <rric@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-22 11:40:52 +02:00
Pali Rohár
c5c0ede221 PCI: iproc: Fix return value of iproc_msi_irq_domain_alloc()
[ Upstream commit 1e83130f01b04c16579ed5a5e03d729bcffc4c5d ]

IRQ domain alloc function should return zero on success. Non-zero value
indicates failure.

Link: https://lore.kernel.org/r/20210303142202.25780-1-pali@kernel.org
Fixes: fc54bae288 ("PCI: iproc: Allow allocation of multiple MSIs")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-19 10:13:01 +02:00
Kishon Vijay Abraham I
e0b325888b PCI: keystone: Let AM65 use the pci_ops defined in pcie-designware-host.c
commit 3d0b2a3a87ce5ae85de46c4241afd52ab8b566fe upstream.

Both TI's AM65x (K3) and TI's K2 PCIe driver are implemented in
pci-keystone. However Only K2 PCIe driver should use it's own pci_ops
for configuration space accesses. But commit 10a797c6e5
("PCI: dwc: keystone: Use pci_ops for config space accessors") used
custom pci_ops for both AM65x and K2. This breaks configuration space
access for AM65x platform. Fix it here.

Link: https://lore.kernel.org/r/20210317131518.11040-1-kishon@ti.com
Fixes: 10a797c6e5 ("PCI: dwc: keystone: Use pci_ops for config space accessors")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Cc: <stable@vger.kernel.org> # v5.10
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-14 09:49:58 +02:00
Dejin Zheng
cc178b77f8 PCI: xgene: Fix cfg resource mapping
commit d4707d79fae08c8996a1ba45965a491045a22dda upstream.

In commit e2dcd20b16 a change was made to use
devm_platform_ioremap_resource_byname() to simplify code and remove
the res variable; this was wrong since the res variable is still needed
and as an outcome the port->cfg_addr gets an erroneous address.

Revert the change going back to original behaviour.

Link: https://lore.kernel.org/r/20210328144118.305074-1-zhengdejin5@gmail.com
Fixes: e2dcd20b16 ("PCI: controller: Convert to devm_platform_ioremap_resource_byname()")
Reported-by: dann.frazier@canonical.com
Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org    # v5.9+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-14 09:49:57 +02:00
Krzysztof Wilczyński
fa6dae9d7f PCI: mediatek: Add missing of_node_put() to fix reference leak
[ Upstream commit 42814c438aac79746d310f413a27d5b0b959c5de ]

The for_each_available_child_of_node helper internally makes use of the
of_get_next_available_child() which performs an of_node_get() on each
iteration when searching for next available child node.

Should an available child node be found, then it would return a device
node pointer with reference count incremented, thus early return from
the middle of the loop requires an explicit of_node_put() to prevent
reference count leak.

To stop the reference leak, explicitly call of_node_put() before
returning after an error occurred.

Link: https://lore.kernel.org/r/20210120184810.3068794-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-17 17:06:24 +01:00
Martin Kaiser
d26949c732 PCI: xgene-msi: Fix race in installing chained irq handler
[ Upstream commit a93c00e5f975f23592895b7e83f35de2d36b7633 ]

Fix a race where a pending interrupt could be received and the handler
called before the handler's data has been setup, by converting to
irq_set_chained_handler_and_data().

See also 2cf5a03cb2 ("PCI/keystone: Fix race in installing chained IRQ
handler").

Based on the mail discussion, it seems ok to drop the error handling.

Link: https://lore.kernel.org/r/20210115212435.19940-3-martin@kaiser.cx
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-17 17:06:24 +01:00
Nadeem Athani
1d3efd15e8 PCI: cadence: Retrain Link to work around Gen2 training defect
[ Upstream commit 4740b969aaf58adeca6829947a3ad8da423976cf ]

Cadence controller will not initiate autonomous speed change if strapped
as Gen2. The Retrain Link bit is set as quirk to enable this speed change.

Link: https://lore.kernel.org/r/20210209144622.26683-3-nadeem@cadence.com
Signed-off-by: Nadeem Athani <nadeem@cadence.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-11 14:17:29 +01:00
Chen-Yu Tsai
9cf2b21aa9 PCI: rockchip: Make 'ep-gpios' DT property optional
[ Upstream commit 58adbfb3ebec460e8b58875c682bafd866808e80 ]

The Rockchip PCIe controller DT binding clearly states that 'ep-gpios' is
an optional property. And indeed there are boards that don't require it.

Make the driver follow the binding by using devm_gpiod_get_optional()
instead of devm_gpiod_get().

[bhelgaas: tidy whitespace]
Link: https://lore.kernel.org/r/20210121162321.4538-2-wens@kernel.org
Fixes: e77f847df5 ("PCI: rockchip: Add Rockchip PCIe controller support")
Fixes: 956cd99b35 ("PCI: rockchip: Separate common code from RC driver")
Fixes: 964bac9455 ("PCI: rockchip: Split out rockchip_pcie_parse_dt() to parse DT")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04 11:38:18 +01:00
Krzysztof Wilczyński
1ecbf4f3e9 PCI: cadence: Fix DMA range mapping early return error
[ Upstream commit 1002573ee33efef0988a9a546c075a9fa37d2498 ]

Function cdns_pcie_host_map_dma_ranges() iterates over a PCIe host bridge
DMA ranges using the resource_list_for_each_entry() iterator, returning an
error if cdns_pcie_host_bar_config() fails.

49e427e6bd ("Merge branch 'pci/host-probe-refactor'") botched a merge so
it *always* returned after the first DMA range, even if no error occurred.

Fix the error checking so we return early only when an error occurs.

[bhelgaas: commit log]
Fixes: 49e427e6bd ("Merge branch 'pci/host-probe-refactor'")
Link: https://lore.kernel.org/r/20210216205935.3112661-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04 11:38:15 +01:00
Pan Bian
6a96a4413d PCI: xilinx-cpm: Fix reference count leak on error path
[ Upstream commit ae191d2e513ae5274224777ae67018a584074a28 ]

Also drop the reference count of the node on error path.

Link: https://lore.kernel.org/r/20210120143745.699-1-bianpan2016@163.com
Fixes: 508f610648 ("PCI: xilinx-cpm: Add Versal CPM Root Port driver")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04 11:38:11 +01:00
Marek Vasut
9944f02f2e PCI: rcar: Always allocate MSI addresses in 32bit space
[ Upstream commit c4e0fec2f7ee013dbf86445394ff47f719408f99 ]

This fixes MSI operation on legacy PCI cards, which cannot issue 64bit MSIs.
The R-Car controller only has one MSI trigger address instead of two, one
for 64bit and one for 32bit MSI, set the address to 32bit PCIe space so that
legacy PCI cards can also trigger MSIs.

Link: https://lore.kernel.org/r/20201016120431.7062-1-marek.vasut@gmail.com
Fixes: 290c1fb358 ("PCI: rcar: Add MSI support for PCIe")
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: linux-renesas-soc@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04 11:38:11 +01:00
Ansuel Smith
9101e32862 PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064
commit 2cfef1971aea6119ee27429181d6cb3383031ac2 upstream.

The use of PHY_REFCLK_USE_PAD introduced a regression for apq8064 devices.
It was tested that while apq doesn't require the padding, ipq SoC must use
it or the kernel hangs on boot.

Link: https://lore.kernel.org/r/20201019165555.8269-1-ansuelsmth@gmail.com
Fixes: de3c4bf648 ("PCI: qcom: Add support for tx term offset for rev 2.1.0")
Reported-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Cc: stable@vger.kernel.org	# v4.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-03-04 11:37:18 +01:00
Roman Bacik
3ff34b89a4 PCI: iproc: Invalidate correct PAXB inbound windows
[ Upstream commit 89bbcaac3dff21f3567956b3416f5ec8b45f5555 ]

Second stage bootloaders prior to Linux boot may use all inbound windows
including IARR1/IMAP1. We need to ensure that all previous configuration
of inbound windows are invalidated during the initialization stage of
the Linux iProc PCIe driver so let's add a fix to define and invalidate
IARR1/IMAP1 because it is currently missing, fixing the issue.

Link: https://lore.kernel.org/r/20201001060054.6616-3-srinath.mannam@broadcom.com
Fixes: 9415743e4c ("PCI: iproc: Invalidate PAXB address mapping")
Signed-off-by: Roman Bacik <roman.bacik@broadcom.com>
Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
[lorenzo.pieralisi@arm.com: commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30 11:53:27 +01:00
Bharat Gooty
98518a5233 PCI: iproc: Fix out-of-bound array accesses
[ Upstream commit a3ff529f5d368a17ff35ada8009e101162ebeaf9 ]

Declare the full size array for all revisions of PAX register sets
to avoid potentially out of bound access of the register array
when they are being initialized in iproc_pcie_rev_init().

Link: https://lore.kernel.org/r/20201001060054.6616-2-srinath.mannam@broadcom.com
Fixes: 06324ede76 ("PCI: iproc: Improve core register population")
Signed-off-by: Bharat Gooty <bharat.gooty@broadcom.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30 11:53:27 +01:00
Jim Quinlan
e7e8d6dc17 PCI: brcmstb: Initialize "tmp" before use
[ Upstream commit ddaff0af653136ee1e0b49116ecf2988c2fc64ca ]

The variable 'tmp' is used multiple times in the brcm_pcie_setup()
function.  One such usage did not initialize 'tmp' to the current value
of the target register.  By luck the mistake does not currently affect
behavior;  regardless 'tmp' is now initialized properly.

Suggested-by: Rafał Miłecki <zajec5@gmail.com>
Link: https://lore.kernel.org/r/20201102205712.23332-1-james.quinlan@broadcom.com
Fixes: c045213703 ("PCI: brcmstb: Add Broadcom STB PCIe host controller driver")
Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-12-30 11:53:18 +01:00
Rob Herring
832ea23427 PCI: mvebu: Fix duplicate resource requests
With commit 669cbc7081 ("PCI: Move DT resource setup into
devm_pci_alloc_host_bridge()"), the DT 'ranges' is parsed and populated
into resources when the host bridge is allocated. The resources are
requested as well, but that happens a second time for the mvebu driver in
mvebu_pcie_parse_request_resources(). We should only be requesting the
additional resources added in mvebu_pcie_parse_request_resources().  These
are not added by default because they use custom properties rather than
standard DT address translation.

Also, the bus ranges was also populated by default, so we can remove it
from mvebu_pci_host_probe().

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=209729
Fixes: 669cbc7081 ("PCI: Move DT resource setup into devm_pci_alloc_host_bridge()")
Link: https://lore.kernel.org/r/20201023145252.2691779-1-robh@kernel.org
Reported-by: vtolkm@googlemail.com
Tested-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Russell King <linux@armlinux.org.uk>
2020-11-04 13:55:30 -06:00
Rob Herring
9fff3256f9 PCI: dwc: Restore ATU memory resource setup to use last entry
Prior to commit 0f71c60ffd ("PCI: dwc: Remove storing of PCI resources"),
the DWC driver was setting up the last memory resource rather than the
first memory resource. This doesn't matter for most platforms which only
have 1 memory resource, but it broke Tegra194 which has a 2nd
(prefetchable) memory region that requires an ATU entry. The first region
on Tegra194 relies on the default 1:1 pass-thru of outbound transactions
and doesn't need an ATU entry.

Fixes: 0f71c60ffd ("PCI: dwc: Remove storing of PCI resources")
Link: https://lore.kernel.org/r/20201026154852.221483-1-robh@kernel.org
Reported-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Cc: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
2020-11-04 13:55:30 -06:00
Linus Torvalds
00937f36b0 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
28e34e751f Merge branch 'remotes/lorenzo/pci/xilinx'
- Remove leftover bridge initialization (Lorenzo Pieralisi)

* remotes/lorenzo/pci/xilinx:
  PCI: xilinx-cpm: Remove leftover bridge initialization
2020-10-21 09:58:44 -05:00
Bjorn Helgaas
4c0e51f805 Merge branch 'remotes/lorenzo/pci/xgene'
- Remove unused assignment (Krzysztof Wilczyński)

* remotes/lorenzo/pci/xgene:
  PCI: xgene: Remove unused assignment to variable msi_val
2020-10-21 09:58:44 -05:00
Bjorn Helgaas
a2340daa6a Merge branch 'pci/vmd'
- Add physical offset helper (Jon Derrick)

- Add bus offset configuration helper (Jon Derrick)

- Add IRQ domain configuration helper (Jon Derrick)

- Add IRQ allocation helper (Jon Derrick)

- Drop pci_save_state()/pci_restore_state() in favor of the PCI core PM
  (Jon Derrick)

* pci/vmd:
  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
2020-10-21 09:58:44 -05:00
Bjorn Helgaas
214b2e042f Merge branch 'remotes/lorenzo/pci/tegra'
- Drop return value checking for debugfs_create() calls (Greg
  Kroah-Hartman)

- Convert debugfs "ports" file to use DEFINE_SEQ_ATTRIBUTE() (Liu Shixin)

* remotes/lorenzo/pci/tegra:
  PCI: tegra: Convert to use DEFINE_SEQ_ATTRIBUTE macro
  PCI: tegra: No need to check return value of debugfs_create() functions
2020-10-21 09:58:43 -05:00
Bjorn Helgaas
f95f023d11 Merge branch 'remotes/lorenzo/pci/rcar'
- Document R8A774A1, R8A774B1, R8A774E1 endpoint support in DT (Lad
  Prabhakar)

- Add R8A774A1, R8A774B1, R8A774E1 (RZ/G2M, RZ/G2N, RZ/G2H) IDs to endpoint
  test (Lad Prabhakar)

- Add device tree support for R8A7742 (Lad Prabhakar)

- Use "fallthrough" pseudo-keyword (Gustavo A. R. Silva)

* remotes/lorenzo/pci/rcar:
  dt-bindings: PCI: rcar: Add device tree support for r8a7742
  PCI: rcar-gen2: Use fallthrough pseudo-keyword
  misc: pci_endpoint_test: Add Device ID for RZ/G2H PCIe controller
  dt-bindings: pci: rcar-pci-ep: Document r8a774e1
  misc: pci_endpoint_test: Add Device ID for RZ/G2M and RZ/G2N PCIe controllers
  dt-bindings: pci: rcar-pci-ep: Document r8a774a1 and r8a774b1
2020-10-21 09:58:43 -05:00
Bjorn Helgaas
3b35398220 Merge branch 'remotes/lorenzo/pci/qcom'
- Make sure PCIe is reset before init to work around QSDK U-Boot issue
  (Ansuel Smith)

- Set iproc affinity mask on MSI interrupts (Mark Tomlinson)

* remotes/lorenzo/pci/qcom:
  PCI: qcom: Make sure PCIe is reset before init for rev 2.1.0
2020-10-21 09:58:43 -05:00
Bjorn Helgaas
be36e9b971 Merge branch 'remotes/lorenzo/pci/mvebu'
- Remove useless msi_controller pointer allocation (Lorenzo Pieralisi)

* remotes/lorenzo/pci/mvebu:
  PCI: mvebu: Remove useless msi_controller pointer allocation
2020-10-21 09:58:42 -05:00
Bjorn Helgaas
4f317eac2f Merge branch 'remotes/lorenzo/pci/mobiveil'
- Simplify mobiveil_pcie_init_irq_domain() (Liu Shixin)

* remotes/lorenzo/pci/mobiveil:
  PCI: mobiveil: Simplify mobiveil_pcie_init_irq_domain() return expression
2020-10-21 09:58:42 -05:00
Bjorn Helgaas
92f27db7b1 Merge branch 'remotes/lorenzo/pci/meson'
- Add pci-meson module support and enable by default on ARCH_MESON (Kevin
  Hilman)

* remotes/lorenzo/pci/meson:
  PCI: meson: Build as module by default
2020-10-21 09:58:41 -05:00
Bjorn Helgaas
1f287b5ce5 Merge branch 'remotes/lorenzo/pci/loongson'
* remotes/lorenzo/pci/loongson:
  PCI: loongson: Simplify loongson_pci_probe() return expression
2020-10-21 09:58:41 -05:00
Bjorn Helgaas
29828fc20a Merge branch 'remotes/lorenzo/pci/kirin'
- Return -EPROBE_DEFER in case the gpio isn't ready (Bean Huo)

* remotes/lorenzo/pci/kirin:
  PCI: kirin: Return -EPROBE_DEFER in case the gpio isn't ready
2020-10-21 09:58:41 -05:00
Bjorn Helgaas
7ba381c449 Merge branch 'remotes/lorenzo/pci/iproc'
- Set affinity mask on MSI interrupts (Mark Tomlinson)

- Simplify by using module_bcma_driver (Liu Shixin)

- Fix 'using integer as NULL pointer' warning (Krzysztof Wilczyński)

* remotes/lorenzo/pci/iproc:
  PCI: iproc: Fix using plain integer as NULL pointer in iproc_pcie_pltfm_probe
  PCI: iproc: Use module_bcma_driver to simplify the code
  PCI: iproc: Set affinity mask on MSI interrupts
2020-10-21 09:58:40 -05:00
Bjorn Helgaas
982f833426 Merge branch 'remotes/lorenzo/pci/imx6'
- Use "fallthrough" pseudo-keyword (Gustavo A. R. Silva)

- Drop redundant error messages after devm_clk_get() (Anson Huang)

* remotes/lorenzo/pci/imx6:
  PCI: imx6: Do not output error message when devm_clk_get() failed with -EPROBE_DEFER
  PCI: imx6: Use fallthrough pseudo-keyword
2020-10-21 09:58:40 -05:00
Bjorn Helgaas
9d69d649bb Merge branch 'remotes/lorenzo/pci/hv'
- Fix hibernation in case interrupts are not re-created (Dexuan Cui)

* remotes/lorenzo/pci/hv:
  PCI: hv: Fix hibernation in case interrupts are not re-created
2020-10-21 09:58:39 -05:00
Bjorn Helgaas
924bb1f9b0 Merge branch 'remotes/lorenzo/pci/dwc'
- Fix designware-ep Header Type check (Hou Zhiqiang)

- Use DBI accessors instead of own config accessors (Rob Herring)

- Allow overriding bridge pci_ops (Rob Herring)

- Allow root and child buses to have different pci_ops (Rob Herring)

- Add default dwc pci_ops.map_bus (Rob Herring)

- Use pci_ops for root config space accessors in al, exynos, histb,
  keystone, kirin, meson, tegra (Rob Herring)

- Remove dwc own/other config accessor ops (Rob Herring)

- Use generic config accessors in dwc (Rob Herring)

- Also call .add_bus() callback for root bus (Rob Herring)

- Convert keystone .scan_bus() callback to use pci_ops.add_bus (Rob
  Herring)

- Convert dwc to use pci_host_probe() (Rob Herring)

- Remove dwc root_bus pointer (Rob Herring)

- Remove storing of PCI resources in dwc-specific structs (Rob Herring)

- Simplify config space handling (Rob Herring)

- Drop keystone duplicated DT num-viewport handling (Rob Herring)

- Check CONFIG_PCI_MSI in dw_pcie_msi_init() instead of duplicating it in
  all the drivers (Rob Herring)

- Remove imx6 duplicate PCIE_LINK_WIDTH_SPEED_CONTROL definition (Rob
  Herring)

- Add dwc num_lanes for use when it's lacking from DT (Rob Herring)

- Ensure "Fast Link Mode" simulation environment setting is cleared (Rob
  Herring)

- Drop meson duplicate number of lanes setup (Rob Herring)

- Drop meson unnecessary RC config space init (Rob Herring)

- Rework meson config and dwc port logic register accesses (Rob Herring)

- Use common PCI register definitions in imx6 and qcom (Rob Herring)

- Search for DesignWare PCIe Capability instead of hard-coding its location
  (Rob Herring)

- Use common DesignWare register definitions in tegra (Rob Herring)

- Drop keystone unused DBI2 code (Rob Herring)

- Make dwc ATU accessors private (Rob Herring)

- Centralize link gen setting in dwc (Rob Herring)

- Set PORT_LINK_DLL_LINK_EN in common dwc setup code (Rob Herring)

- Drop intel-gw unnecessary DT 'device_type' checking (Rob Herring)

- Move intel-gw PCI_CAP_ID_EXP discovery to the single place it's used (Rob
  Herring)

- Drop intel-gw unused max_width (Rob Herring)

- Move N_FTS (fast training sequence) setup to common dwc setup (Rob
  Herring)

- Convert spear13xx, tegra194 to use DBI accessors (Rob Herring)

- Add multiple PFs support for DWC (Xiaowei Bao)

- Add MSI-X doorbell mode for endpoint mode (Xiaowei Bao)

- Update MSI/MSI-X capability management for endpoints (Xiaowei Bao)

- Add layerscape ls1088a and ls2088a compatible strings (Xiaowei Bao)

- Update layerscape MSI/MSI-X management (Xiaowei Bao)

- Use doorbell to support MSI-X on layerscape (Xiaowei Bao)

- Add layerscape endpoint mode support for ls1088a and ls2088a (Xiaowei
  Bao)

- Add layerscape ls1088a node to DT (Xiaowei Bao)

- Add Freescale/Layerscape ls1088a to endpoint test (Xiaowei Bao)

- Add endpoint test driver data for Layerscape PCIe controllers (Hou
  Zhiqiang)

- Fix 'cast truncates bits from constant value' warning (Gustavo Pimentel)

- Add uniphier iATU register description (Kunihiko Hayashi)

- Add common iATU register support (Kunihiko Hayashi)

- Remove keystone iATU register mapping in favor of generic dwc support
  (Kunihiko Hayashi)

- Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang)

- Fix MSI page leakage in suspend/resume (Jisheng Zhang)

- Check whether link is up before attempting config access (best-effort fix
  even though it's racy) (Hou Zhiqiang)

* remotes/lorenzo/pci/dwc:
  PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus()
  PCI: dwc: Fix MSI page leakage in suspend/resume
  PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled
  PCI: keystone: Remove iATU register mapping
  PCI: dwc: Add common iATU register support
  dt-bindings: PCI: uniphier-ep: Add iATU register description
  dt-bindings: PCI: uniphier: Add iATU register description
  PCI: dwc: Fix 'cast truncates bits from constant value'
  misc: pci_endpoint_test: Add driver data for Layerscape PCIe controllers
  misc: pci_endpoint_test: Add LS1088a in pci_device_id table
  PCI: layerscape: Add EP mode support for ls1088a and ls2088a
  PCI: layerscape: Modify the MSIX to the doorbell mode
  PCI: layerscape: Modify the way of getting capability with different PEX
  PCI: layerscape: Fix some format issue of the code
  dt-bindings: pci: layerscape-pci: Add compatible strings for ls1088a and ls2088a
  PCI: designware-ep: Modify MSI and MSIX CAP way of finding
  PCI: designware-ep: Move the function of getting MSI capability forward
  PCI: designware-ep: Add the doorbell mode of MSI-X in EP mode
  PCI: designware-ep: Add multiple PFs support for DWC
  PCI: dwc: Use DBI accessors
  PCI: dwc: Move N_FTS setup to common setup
  PCI: dwc/intel-gw: Drop unused max_width
  PCI: dwc/intel-gw: Move getting PCI_CAP_ID_EXP offset to intel_pcie_link_setup()
  PCI: dwc/intel-gw: Drop unnecessary checking of DT 'device_type' property
  PCI: dwc: Set PORT_LINK_DLL_LINK_EN in common setup code
  PCI: dwc: Centralize link gen setting
  PCI: dwc: Make ATU accessors private
  PCI: dwc: Remove read_dbi2 code
  PCI: dwc/tegra: Use common Designware port logic register definitions
  PCI: dwc: Remove hardcoded PCI_CAP_ID_EXP offset
  PCI: dwc/qcom: Use common PCI register definitions
  PCI: dwc/imx6: Use common PCI register definitions
  PCI: dwc/meson: Rework PCI config and DW port logic register accesses
  PCI: dwc/meson: Drop unnecessary RC config space initialization
  PCI: dwc/meson: Drop the duplicate number of lanes setup
  PCI: dwc: Ensure FAST_LINK_MODE is cleared
  PCI: dwc: Add a 'num_lanes' field to struct dw_pcie
  PCI: dwc/imx6: Remove duplicate define PCIE_LINK_WIDTH_SPEED_CONTROL
  PCI: dwc: Check CONFIG_PCI_MSI inside dw_pcie_msi_init()
  PCI: dwc/keystone: Drop duplicated 'num-viewport'
  PCI: dwc: Simplify config space handling
  PCI: dwc: Remove storing of PCI resources
  PCI: dwc: Remove root_bus pointer
  PCI: dwc: Convert to use pci_host_probe()
  PCI: dwc: keystone: Convert .scan_bus() callback to use add_bus
  PCI: Also call .add_bus() callback for root bus
  PCI: dwc: Use generic config accessors
  PCI: dwc: Remove dwc specific config accessor ops
  PCI: dwc: histb: Use pci_ops for root config space accessors
  PCI: dwc: exynos: Use pci_ops for root config space accessors
  PCI: dwc: kirin: Use pci_ops for root config space accessors
  PCI: dwc: meson: Use pci_ops for root config space accessors
  PCI: dwc: tegra: Use pci_ops for root config space accessors
  PCI: dwc: keystone: Use pci_ops for config space accessors
  PCI: dwc: al: Use pci_ops for child config space accessors
  PCI: dwc: Add a default pci_ops.map_bus for root port
  PCI: dwc: Allow overriding bridge pci_ops
  PCI: dwc: Use DBI accessors instead of own config accessors
  PCI: Allow root and child buses to have different pci_ops
  PCI: designware-ep: Fix the Header Type check
2020-10-21 09:58:39 -05:00
Bjorn Helgaas
a78f2e07d0 Merge branch 'remotes/lorenzo/pci/cadence'
- Remove obsolete path from comment (Flavio Suligoi)

- Simplify cdns_pcie_host_init_address_translation() (Qinglang Miao)

* remotes/lorenzo/pci/cadence:
  PCI: cadence: Simplify cdns_pcie_host_init_address_translation() return expression
  PCI: cadence-ep: Remove obsolete path from comment
2020-10-21 09:58:38 -05:00
Bjorn Helgaas
a66999a344 Merge branch 'remotes/lorenzo/pci/brcmstb'
- Make PCIE_BRCMSTB depend on and default to ARCH_BRCMSTB (Jim Quinlan)

- Add DT bindings for 7278, 7216, 7211, and new properties (Jim Quinlan)

- Add bcm7278 register info (Jim Quinlan)

- Add suspend and resume pm_ops (Jim Quinlan)

- Add bcm7278 PERST# support (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 bcm7211, bcm7216, bcm7445, bcm7278 to match list (Jim Quinlan)

* remotes/lorenzo/pci/brcmstb:
  PCI: brcmstb: Add bcm7211, bcm7216, bcm7445, bcm7278 to match list
  PCI: brcmstb: Set bus max burst size by chip type
  PCI: brcmstb: Accommodate MSI for older chips
  PCI: brcmstb: Set additional internal memory DMA viewport sizes
  PCI: brcmstb: Add control of rescal reset
  PCI: brcmstb: Add bcm7278 PERST# support
  PCI: brcmstb: Add suspend and resume pm_ops
  PCI: brcmstb: Add bcm7278 register info
  dt-bindings: PCI: Add bindings for more Brcmstb chips
  PCI: brcmstb: PCIE_BRCMSTB depends on ARCH_BRCMSTB
2020-10-21 09:58:38 -05:00
Bjorn Helgaas
d1640a8307 Merge branch 'remotes/lorenzo/pci/aardvark'
- Fix s390 build error (Pali Rohár)

- Check for errors from pci_bridge_emul_init() (Pali Rohár)

- Export pci-bridge-emul functions for use by modules (Pali Rohár)

- Make aardvark driver modular (Pali Rohár)

- Move PCIe reset code to advk_pcie_train_link() (Pali Rohár)

- Convert internal SMCC firmware return codes to errno (Pali Rohár)

- Fix initialization with old Marvell's Arm Trusted Firmware (Pali Rohár)

* remotes/lorenzo/pci/aardvark:
  PCI: aardvark: Fix initialization with old Marvell's Arm Trusted Firmware
  phy: marvell: comphy: Convert internal SMCC firmware return codes to errno
  PCI: aardvark: Move PCIe reset card code to advk_pcie_train_link()
  PCI: aardvark: Implement driver 'remove' function and allow to build it as module
  PCI: pci-bridge-emul: Export API functions
  PCI: aardvark: Check for errors from pci_bridge_emul_init() call
  PCI: aardvark: Fix compilation on s390
2020-10-21 09:58:37 -05:00
Bjorn Helgaas
03b482e243 Merge branch 'remotes/lorenzo/pci/apei'
- Add ACPI APEI notifier chain for unknown (vendor) CPER records (Shiju
  Jose)

- Add handling of HiSilicon HIP PCIe controller errors (Yicong Yang)

* remotes/lorenzo/pci/apei:
  PCI: hip: Add handling of HiSilicon HIP PCIe controller errors
  ACPI / APEI: Add a notifier chain for unknown (vendor) CPER records
2020-10-21 09:58:36 -05:00