- 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)
* pci/brcmstb:
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()
- Convert tegra to MSI domains (Marc Zyngier)
- Use rcar controller address as MSI doorbell instead of allocating a page
(Marc Zyngier)
- Convert rcar to MSI domains (Marc Zyngier)
- Use xilinx port structure as MSI doorbell instead of allocating a page
(Marc Zyngier)
- Convert xilinx to MSI domains (Marc Zyngier)
- Remove unused Hyper-V msi_controller structure (Marc Zyngier)
- Remove unused PCI core msi_controller support (Marc Zyngier)
- Remove struct msi_controller (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)
* remotes/lorenzo/pci/msi:
PCI: Refactor HT advertising of NO_MSI flag
PCI/MSI: Document the various ways of ending up with NO_MSI
PCI: mediatek: Advertise lack of built-in MSI handling
PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains
PCI/MSI: Let PCI host bridges declare their reliance on MSI domains
PCI/MSI: Kill default_teardown_msi_irqs()
PCI/MSI: Kill msi_controller structure
PCI/MSI: Drop use of msi_controller from core code
PCI: hv: Drop msi_controller structure
PCI: xilinx: Convert to MSI domains
PCI: xilinx: Don't allocate extra memory for the MSI capture address
PCI: rcar: Convert to MSI domains
PCI: rcar: Don't allocate extra memory for the MSI capture address
PCI: tegra: Convert to MSI domains
- 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)
* remotes/lorenzo/pci/vmd:
PCI: vmd: Disable MSI-X remapping when possible
iommu/vt-d: Use Real PCI DMA device for IRTE
- Make several microchip symbols static (Wei Yongjun)
- Drop redundant dev_err() for platform_get_irq() errors (Krzysztof
Wilczyński)
* remotes/lorenzo/pci/microchip:
PCI: microchip: Remove dev_err() when handing an error from platform_get_irq()
PCI: microchip: Make some symbols static
- Configure FC and FTS for functions other than 0 (Ryder Lee)
- Add missing MODULE_DEVICE_TABLE (Qiheng Lin)
- 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)
* remotes/lorenzo/pci/mediatek:
MAINTAINERS: Add Jianjun Wang as MediaTek PCI co-maintainer
PCI: mediatek-gen3: Add system PM support
PCI: mediatek-gen3: Add MSI support
PCI: mediatek-gen3: Add INTx support
PCI: mediatek-gen3: Add MediaTek Gen3 driver for MT8192
PCI: Export pci_pio_to_address() for module use
dt-bindings: PCI: mediatek-gen3: Add YAML schema
PCI: mediatek: Add missing MODULE_DEVICE_TABLE
PCI: mediatek: Configure FC and FTS for functions other than 0
- Return zero for success of iproc_msi_irq_domain_alloc() (Pali Rohár)
* remotes/lorenzo/pci/iproc:
PCI: iproc: Fix return value of iproc_msi_irq_domain_alloc()
- Use generic config accessors for TI AM65x (K3) to fix regression (Kishon
Vijay Abraham I)
- Move MSI Receiver init to dw_pcie_host_init() so it is re-initialized
along with the RC in resume (Jisheng Zhang)
- Remove unused pcie_app_rd() (Jiapeng Chong)
- Move iATU detection earlier to fix regression (Hou Zhiqiang)
* remotes/lorenzo/pci/dwc:
PCI: dwc: Move iATU detection earlier
PCI: dwc/intel-gw: Remove unused function
PCI: dwc: Move dw_pcie_msi_init() to dw_pcie_setup_rc()
PCI: keystone: Let AM65 use the pci_ops defined in pcie-designware-host.c
- 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)
* remotes/lorenzo/pci/cadence:
PCI: j721e: Add support to provide refclk to PCIe connector
dt-bindings: PCI: ti,j721e: Add endpoint mode dt-bindings for TI's AM64 SoC
dt-bindings: PCI: ti,j721e: Add host mode dt-bindings for TI's AM64 SoC
dt-bindings: PCI: ti,j721e: Add binding to represent refclk to the connector
- Increase delay after FLR to work around Intel DC P4510 NVMe erratum
(Raphael Norwitz)
* pci/virtualization:
PCI: Delay after FLR of Intel DC P4510 NVMe
Add driver for the SiFive FU740 PCIe host controller.
This controller is based on the DesignWare PCIe core.
Co-developed-by: Henry Styles <hes@sifive.com>
Co-developed-by: Erik Danie <erik.danie@sifive.com>
Co-developed-by: Greentime Hu <greentime.hu@sifive.com>
Link: https://lore.kernel.org/r/20210504105940.100004-6-greentime.hu@sifive.com
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Henry Styles <hes@sifive.com>
Signed-off-by: Erik Danie <erik.danie@sifive.com>
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
The Broadcom STB PCIe RC uses a reset control "rescal" for certain chips.
The "rescal" implements a "pulse reset" so using assert/deassert is wrong
for this device. Instead, we use reset/rearm. We need to use rearm so
that we can reset it after a suspend/resume cycle; w/o using "rearm", the
"rescal" device will only ever fire once.
Of course for suspend/resume to work we also need to put the reset/rearm
calls in the suspend and resume routines.
Fixes: 740d6c3708 ("PCI: brcmstb: Add control of rescal reset")
Link: https://lore.kernel.org/r/20210430152156.21162-4-jim2101024@gmail.com
Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Only SRDT tag is the end tag, and no caller is interested in it. This
allows to remove all SRDT tag handling.
Link: https://lore.kernel.org/r/3f63f06f-734f-8fff-9518-27fe1faf903d@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
All callers pass 0 as offset. Therefore remove the parameter and use a
fixed offset 0 in pci_vpd_find_tag().
Link: https://lore.kernel.org/r/f62e6e19-5423-2ead-b2bd-62844b23ef8f@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
pci_init_capabilities() is the only caller and doesn't use the return
value. So let's change the return type to void.
Link: https://lore.kernel.org/r/663ec440-8375-1459-ddb4-98ea76e75917@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Realtek RTL8169/8168/8125 NIC families indicate VPD capability and an
optional VPD EEPROM can be connected via I2C/SPI. However I haven't seen
any card or system with such a VPD EEPROM yet. The missing EEPROM causes
the following warning whenever e.g. lscpi -vv is executed.
invalid short VPD tag 00 at offset 01
The warning confuses users, and I think we should handle the situation more
gently. Therefore, if first VPD byte is read as 0x00, assume a missing
optional VPD PROM and replace the warning with a more descriptive message
at info level.
[bhelgaas: fix pre-existing whitespace]
Link: https://lore.kernel.org/r/ccbc11f1-4dbb-e2c8-d0ea-559e06d4c340@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
24a1720a08 ("cxgb4: collect serial config version from register") removed
the only usage of pci_set_vpd_size(). If a device needs to override the
auto-detected VPD size, then this can be done with a PCI quirk, as is done
for Chelsio devices. There's no need to allow drivers to change the VPD
size.
Remove pci_set_vpd_size().
[bhelgaas: squash in Arnd's fix for "'pci_vpd_set_size' defined but not
used" from
https://lore.kernel.org/r/20210421140334.3847155-1-arnd@kernel.org]
Link: https://lore.kernel.org/r/47d86e52-9bcf-7da7-1edb-0d988a7a82ab@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Add suspend_noirq and resume_noirq callback functions to implement PM
system suspend and resume hooks for the MediaTek Gen3 PCIe controller.
When the system suspends, trigger the PCIe link to enter the L2 state
and pull down the PERST# pin, gating the clocks of the MAC layer, and
then power-off the physical layer to provide power-saving.
When the system resumes, the PCIe link should be re-established and the
related control register values should be restored.
Link: https://lore.kernel.org/r/20210420061723.989-7-jianjun.wang@mediatek.com
Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
Add INTx support for MediaTek Gen3 PCIe controller.
Link: https://lore.kernel.org/r/20210420061723.989-5-jianjun.wang@mediatek.com
Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
MediaTek's PCIe host controller has three generation HWs, the new
generation HW is an individual bridge, it supports Gen3 speed and
compatible with Gen2, Gen1 speed.
Add support for new Gen3 controller which can be found on MT8192.
Link: https://lore.kernel.org/r/20210420061723.989-4-jianjun.wang@mediatek.com
Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
dw_pcie_ep_init() depends on the detected iATU region numbers to allocate
the in/outbound window management bitmap. It fails after 281f1f99cf
("PCI: dwc: Detect number of iATU windows").
Move the iATU region detection into a new function, move the detection to
the very beginning of dw_pcie_host_init() and dw_pcie_ep_init(). Also
remove it from the dw_pcie_setup(), since it's more like a software
initialization step than hardware setup.
Link: https://lore.kernel.org/r/20210125044803.4310-1-Zhiqiang.Hou@nxp.com
Link: https://lore.kernel.org/linux-pci/20210407131255.702054-1-dmitry.baryshkov@linaro.org
Link: https://lore.kernel.org/r/20210413142219.2301430-1-dmitry.baryshkov@linaro.org
Fixes: 281f1f99cf ("PCI: dwc: Detect number of iATU windows")
Tested-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[DB: moved dw_pcie_iatu_detect to happen after host_init callback]
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: stable@vger.kernel.org # v5.11+
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
If the host which makes use of IP's integrated MSI Receiver losts
power during suspend, we need to reinit the RC and MSI Receiver in
resume. But after we move dw_pcie_msi_init() into the core, we have no
API to do so. Usually the dwc users need to call dw_pcie_setup_rc() to
reinit the RC, we can solve this problem by moving dw_pcie_msi_init()
to dw_pcie_setup_rc().
Link: https://lore.kernel.org/r/20210325152604.6e79deba@xhacker.debian
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
The sysfs_emit() and sysfs_emit_at() functions were introduced to make it
less ambiguous which function is preferred when writing to the output
buffer in a device attribute's "show" callback [1].
Convert the PCI sysfs object "show" functions from sprintf(), snprintf()
and scnprintf() to sysfs_emit() and sysfs_emit_at() accordingly, as the
latter is aware of the PAGE_SIZE buffer and correctly returns the number of
bytes written into the buffer.
No functional change intended.
[1] Documentation/filesystems/sysfs.rst
[bhelgaas: drop dsm_label_utf16s_to_utf8s(), link speed/width changes]
Link: https://lore.kernel.org/r/20210416205856.3234481-10-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Collect the smbios_attr_group and acpi_attr_group together in the logical
order. No functional change intended.
[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20210416205856.3234481-6-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Update coding style to reduce distraction. No functional change intended.
[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20210416205856.3234481-6-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The "label", "index", and "acpi_index" sysfs attributes show firmware label
information about the device. If the ACPI Device Name _DSM is implemented
for the device, we have:
label Device name (optional, may be null)
acpi_index Instance number (unique under \_SB scope)
When there is no ACPI _DSM and SMBIOS provides an Onboard Devices structure
for the device, we have:
label Reference Designation, e.g., a silkscreen label
index Device Type Instance
Previously these attributes were dynamically created either by
pci_bus_add_device() or the pci_sysfs_init() initcall, but since they don't
need to be created or removed dynamically, we can use a static attribute so
the device model takes care of addition and removal automatically.
Convert "label", "index", and "acpi_index" to static attributes.
Presence of the ACPI _DSM (device_has_acpi_name()) determines whether the
ACPI information (label, acpi_index) or the SMBIOS information (label,
index) is visible.
[bhelgaas: commit log, split to separate patch, add "pci_dev_" prefix]
Suggested-by: Oliver O'Halloran <oohall@gmail.com>
Link: https://lore.kernel.org/r/20210416205856.3234481-6-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Use DEVICE_ATTR*() to simplify definition of the SMBIOS label attributes.
No functional change intended.
Note that dev_attr_smbios_label requires __ATTR() because the "label"
attribute can be exposed via either ACPI or SMBIOS, and we already have the
ACPI label_show() function in this file.
[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20210416205856.3234481-6-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Use DEVICE_ATTR*() to simplify definitions of the ACPI label attributes.
No functional change intended.
[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20210416205856.3234481-6-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Rename device_has_dsm() to device_has_acpi_name() to better reflect its
purpose and move it earlier so it's available for a future SMBIOS
.is_visible() function. No functional change intended.
[bhelgaas: split to separate patch]
Link: https://lore.kernel.org/r/20210416205856.3234481-6-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The "vpd" sysfs attribute allows access to Vital Product Data (VPD).
Previously it was dynamically created either by pci_bus_add_device() or the
pci_sysfs_init() initcall, but since it doesn't need to be created or
removed dynamically, we can use a static attribute so the device model
takes care of addition and removal automatically.
Convert "vpd" to a static attribute and use the .is_bin_visible() callback
to check whether the device supports VPD.
Remove pcie_vpd_create_sysfs_dev_files(),
pcie_vpd_remove_sysfs_dev_files(), pci_create_capabilities_sysfs(), and
pci_create_capabilities_sysfs(), which are no longer needed.
[bhelgaas: This is substantially the same as the earlier patch from Heiner
Kallweit <hkallweit1@gmail.com>. I included Krzysztof's change here so all
the "convert to static attribute" changes are together.]
[bhelgaas: rename to vpd_read()/vpd_write() and pci_dev_vpd_attr_group]
Suggested-by: Oliver O'Halloran <oohall@gmail.com>
Based-on: https://lore.kernel.org/r/7703024f-8882-9eec-a122-599871728a89@gmail.com
Based-on-patch-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/20210416205856.3234481-5-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Rename "vpd" attribute accessors so they fit with the BIN_ATTR_RW() macro
usage. Currently there is no BIN_ATTR_ADMIN_RW() that uses 0600
permissions, but if there were, it would likely use "vpd_read()" and
"vpd_write()". No functional change intended.
Extracted from the patch mentioned below by Heiner Kallweit
<hkallweit1@gmail.com>.
Link: https://lore.kernel.org/linux-pci/7703024f-8882-9eec-a122-599871728a89@gmail.com/
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
