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Currently, dw_pcie_msi_init() allocates and maps page for msi, then
program the PCIE_MSI_ADDR_LO and PCIE_MSI_ADDR_HI. The Root Complex
may lose power during suspend-to-RAM, so when we resume, we want to
redo the latter but not the former. If designware based driver (for
example, pcie-tegra194.c) calls dw_pcie_msi_init() in resume path, the
msi page will be leaked.
As pointed out by Rob and Ard, there's no need to allocate a page for
the MSI address, we could use an address in the driver data.
To avoid map the MSI msg again during resume, we move the map MSI msg
from dw_pcie_msi_init() to dw_pcie_host_init().
Suggested-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201009155505.5a580ef5@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>
- Use pci_host_bridge.windows list directly instead of splicing in a
temporary list for cadence, mvebu, host-common (Rob Herring)
- Use pci_host_probe() instead of open-coding all the pieces for altera,
brcmstb, iproc, mobiveil, rcar, rockchip, tegra, v3, versatile, xgene,
xilinx, xilinx-nwl (Rob Herring)
- Convert to devm_platform_ioremap_resource_byname() instead of open-coding
platform_get_resource_byname() and devm_ioremap_resource() for altera,
cadence, mediatek, rockchip, tegra, xgene (Dejin Zheng)
- Convert to devm_platform_ioremap_resource() instead of open-coding
platform_get_resource() and devm_ioremap_resource() for aardvark,
brcmstb, exynos, ftpci100, versatile (Dejin Zheng)
- Remove redundant error messages from devm_pci_remap_cfg_resource()
callers (Dejin Zheng)
- Drop useless PCI_ENABLE_PROC_DOMAINS from versatile driver (Rob Herring)
- Default host bridge parent device to the platform device (Rob Herring)
- Drop unnecessary zeroing of host bridge fields (Rob Herring)
- Use pci_is_root_bus() instead of tracking root bus number separately in
aardvark, designware (imx6, keystone, designware-host), mobiveil,
xilinx-nwl, xilinx, rockchip, rcar (Rob Herring)
- Set host bridge bus number in pci_scan_root_bus_bridge() instead of each
driver for aardvark, designware-host, host-common, mediatek, rcar, tegra,
v3-semi (Rob Herring)
- Use bridge resources instead of parsing DT 'ranges' again for cadence
(Rob Herring)
- Remove private bus number and range from cadence (Rob Herring)
- Use devm_pci_alloc_host_bridge() to simplify rcar (Rob Herring)
- Use struct pci_host_bridge.windows list directly rather than a temporary
(Rob Herring)
- Reduce OF "missing non-prefetchable window" from error to warning message
(Rob Herring)
- Convert rcar-gen2 from old Arm-specific pci_common_init_dev() to new
arch-independent interfaces (Rob Herring)
- Move DT resource setup into devm_pci_alloc_host_bridge() (Rob Herring)
- Set bridge map_irq and swizzle_irq to default functions; drivers that
don't support legacy IRQs (iproc) need to undo this (Rob Herring)
* pci/host-probe-refactor:
PCI: Set bridge map_irq and swizzle_irq to default functions
PCI: Move DT resource setup into devm_pci_alloc_host_bridge()
PCI: rcar-gen2: Convert to use modern host bridge probe functions
PCI: of: Reduce missing non-prefetchable memory region to a warning
PCI: rcar: Use struct pci_host_bridge.windows list directly
PCI: rcar: Use devm_pci_alloc_host_bridge()
PCI: cadence: Remove private bus number and range storage
PCI: cadence: Use bridge resources for outbound window setup
PCI: Move setting pci_host_bridge.busnr out of host drivers
PCI: rcar: Use pci_is_root_bus() to check if bus is root bus
PCI: rockchip: Use pci_is_root_bus() to check if bus is root bus
PCI: xilinx: Use pci_is_root_bus() to check if bus is root bus
PCI: xilinx-nwl: Use pci_is_root_bus() to check if bus is root bus
PCI: mobiveil: Use pci_is_root_bus() to check if bus is root bus
PCI: designware: Use pci_is_root_bus() to check if bus is root bus
PCI: aardvark: Use pci_is_root_bus() to check if bus is root bus
PCI: Drop unnecessary zeroing of bridge fields
PCI: Set default bridge parent device
PCI: versatile: Drop flag PCI_ENABLE_PROC_DOMAINS
PCI: controller: Remove duplicate error message
PCI: controller: Convert to devm_platform_ioremap_resource()
PCI: controller: Convert to devm_platform_ioremap_resource_byname()
PCI: xilinx: Use pci_host_probe() to register host
PCI: xilinx-nwl: Use pci_host_probe() to register host
PCI: rockchip: Use pci_host_probe() to register host
PCI: rcar: Use pci_host_probe() to register host
PCI: iproc: Use pci_host_probe() to register host
PCI: altera: Use pci_host_probe() to register host
PCI: xgene: Use pci_host_probe() to register host
PCI: versatile: Use pci_host_probe() to register host
PCI: v3: Use pci_host_probe() to register host
PCI: tegra: Use pci_host_probe() to register host
PCI: mobiveil: Use pci_host_probe() to register host
PCI: brcmstb: Use pci_host_probe() to register host
PCI: host-common: Use struct pci_host_bridge.windows list directly
PCI: mvebu: Use struct pci_host_bridge.windows list directly
PCI: cadence: Use struct pci_host_bridge.windows list directly
# Conflicts:
# drivers/pci/controller/cadence/pcie-cadence-host.c
Replace http:// links with https:// links. This reduces the likelihood of
man-in-the-middle attacks when developers open these links.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
[bhelgaas: also update samsung.com links, drop sourceforge link]
Link: https://lore.kernel.org/r/20200627103050.71712-1-grandmaster@al2klimov.de
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Function dw_pcie_prog_outbound_atu_unroll() does not program the upper
32-bit ATU limit register. Since ATU programming functions limit the
size of the translated region to 4GB by using a u32 size parameter,
these issues may combine into undefined behavior for resource sizes
with non-zero upper 32-bits.
For example, a 128GB address space starting at physical CPU address of
0x2000000000 with size of 0x2000000000 needs the following values
programmed into the lower and upper 32-bit limit registers:
0x3fffffff in the upper 32-bit limit register
0xffffffff in the lower 32-bit limit register
Currently, only the lower 32-bit limit register is programmed with a
value of 0xffffffff but the upper 32-bit limit register is not being
programmed. As a result, the upper 32-bit limit register remains at its
default value after reset of 0x0.
These issues may combine to produce undefined behavior since the ATU
limit address may be lower than the ATU base address. Programming the
upper ATU limit address register prevents such undefined behavior despite
the region size getting truncated due to the 32-bit size limit.
Link: https://lore.kernel.org/r/1585785493-23210-1-git-send-email-alan.mikhak@sifive.com
Signed-off-by: Alan Mikhak <alan.mikhak@sifive.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
commit beb4641a78 ("PCI: dwc: Add MSI-X callbacks handler"),
in order to raise MSI-X interrupt, obtained MSIX table address from
Base Address Register (BAR). However BAR only holds PCI address
programmed by the host whereas the MSI-X table should be in the local
memory.
Store the MSI-X table address (virtual address) as part of ->set_bar()
callback and use that to get the message address and message data
here.
Fixes: beb4641a78 ("PCI: dwc: Add MSI-X callbacks handler")
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Add a new API dw_pcie_ep_init_notify() to let platform drivers
call it when the core is available for initialization.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Split core initialization code for EP mode into two, one that doesn't
touch core registers and the other that touches core registers. The latter
would be called/skipped based on the EPC feature 'core_init_notifier'.
In platforms where this is skipped, it would be called indirectly
through hooks from the endpoint function driver.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Add support to PCIe RC controller on Intel Gateway SoCs.
PCIe controller is based of Synopsys DesignWare PCIe core.
Intel PCIe driver requires Upconfigure support, Fast Training
Sequence and link speed configurations. So adding the respective
helper functions in the PCIe DesignWare framework.
It also programs hardware autonomous speed during speed
configuration so defining it in pci_regs.h.
Also, mark Intel PCIe driver depends on MSI IRQ Domain
as Synopsys DesignWare framework depends on the
PCI_MSI_IRQ_DOMAIN.
Signed-off-by: Dilip Kota <eswara.kota@linux.intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Add support to enable CDM (Configuration Dependent Module) register
check for any data corruption based on the DT property
'snps,enable-cdm-check'.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cleanup DBI read and write APIs by removing leading "__" (underscore)
from their names as there is no reason to have leading underscores
in the first place in the function definition.
Remove dbi/dbi2 base address parameters as the same behaviour can be
obtained through read and write APIs. Since dw_pcie_{readl/writel}_dbi()
APIs can't be used for ATU read/write as ATU base address could be
different from DBI base address, implement ATU read/write APIs using ATU
base address without using dw_pcie_{readl/writel}_dbi() APIs.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Add an API to group all the tasks to be done to de-initialize host which
can then be called by any dwc core based driver implementations
while adding .remove() support in their respective drivers.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
- Move IRQ register address computation inside macros (Kishon Vijay
Abraham I)
- Separate legacy IRQ and MSI configuration (Kishon Vijay Abraham I)
- Use hwirq, not virq, to get MSI IRQ number offset (Kishon Vijay Abraham
I)
- Squash ks_pcie_handle_msi_irq() into ks_pcie_msi_irq_handler() (Kishon
Vijay Abraham I)
- Add dwc support for platforms with custom MSI controllers (Kishon Vijay
Abraham I)
- Add keystone-specific MSI controller (Kishon Vijay Abraham I)
- Remove dwc host_ops previously used for keystone-specific MSI (Kishon
Vijay Abraham I)
- Skip dwc default MSI init if platform has custom MSI controller (Kishon
Vijay Abraham I)
- Implement .start_link() and .stop_link() for keystone endpoint support
(Kishon Vijay Abraham I)
- Add keystone "reg-names" DT binding (Kishon Vijay Abraham I)
- Squash ks_pcie_dw_host_init() into ks_pcie_add_pcie_port() (Kishon
Vijay Abraham I)
- Get keystone register resources from DT by name, not index (Kishon
Vijay Abraham I)
- Get DT resources in .probe() to prepare for endpoint support (Kishon
Vijay Abraham I)
- Add "ti,syscon-pcie-mode" DT property for PCIe mode configuration
(Kishon Vijay Abraham I)
- Explicitly set keystone to host mode (Kishon Vijay Abraham I)
- Document DT "atu" reg-names requirement for DesignWare core >= 4.80
(Kishon Vijay Abraham I)
- Enable dwc iATU unroll for endpoint mode as well as host mode (Kishon
Vijay Abraham I)
- Add dwc "version" to identify core >= 4.80 for ATU programming (Kishon
Vijay Abraham I)
- Don't build ARM32-specific keystone code on ARM64 (Kishon Vijay Abraham
I)
- Add DT binding for keystone PCIe RC in AM654 SoC (Kishon Vijay Abraham
I)
- Add keystone support for AM654 SoC PCIe RC (Kishon Vijay Abraham I)
- Reset keystone PHYs before enabling them (Kishon Vijay Abraham I)
- Make of_pci_get_max_link_speed() available to endpoint drivers as well
as host drivers (Kishon Vijay Abraham I)
- Add keystone support for DT "max-link-speed" property (Kishon Vijay
Abraham I)
- Add endpoint library support for BAR buffer alignment (Kishon Vijay
Abraham I)
- Make all dw_pcie_ep_ops structs const (Kishon Vijay Abraham I)
- Fix fencepost error in dw_pcie_ep_find_capability() (Kishon Vijay
Abraham I)
- Add dwc hooks for dbi/dbi2 that share the same address space (Kishon
Vijay Abraham I)
- Add keystone support for TI AM654x in endpoint mode (Kishon Vijay
Abraham I)
- Configure designware endpoints to advertise smallest resizable BAR
(1MB) (Kishon Vijay Abraham I)
- Align designware endpoint ATU windows for raising MSIs (Kishon Vijay
Abraham I)
- Add endpoint test support for TI AM654x (Kishon Vijay Abraham I)
- Fix endpoint test test_reg_bar issue (Kishon Vijay Abraham I)
* remotes/lorenzo/pci/keystone:
misc: pci_endpoint_test: Fix test_reg_bar to be updated in pci_endpoint_test
misc: pci_endpoint_test: Add support to test PCI EP in AM654x
PCI: designware-ep: Use aligned ATU window for raising MSI interrupts
PCI: designware-ep: Configure Resizable BAR cap to advertise the smallest size
PCI: keystone: Add support for PCIe EP in AM654x Platforms
dt-bindings: PCI: Add PCI EP DT binding documentation for AM654
PCI: dwc: Add callbacks for accessing dbi2 address space
PCI: dwc: Fix dw_pcie_ep_find_capability() to return correct capability offset
PCI: dwc: Add const qualifier to struct dw_pcie_ep_ops
PCI: endpoint: Add support to specify alignment for buffers allocated to BARs
PCI: keystone: Add support to set the max link speed from DT
PCI: OF: Allow of_pci_get_max_link_speed() to be used by PCI Endpoint drivers
PCI: keystone: Invoke phy_reset() API before enabling PHY
PCI: keystone: Add support for PCIe RC in AM654x Platforms
dt-bindings: PCI: Add PCI RC DT binding documentation for AM654
PCI: keystone: Prevent ARM32 specific code to be compiled for ARM64
PCI: dwc: Fix ATU identification for designware version >= 4.80
PCI: dwc: Enable iATU unroll for endpoint too
dt-bindings: PCI: Document "atu" reg-names
PCI: keystone: Explicitly set the PCIe mode
dt-bindings: PCI: Add dt-binding to configure PCIe mode
PCI: keystone: Move resources initialization to prepare for EP support
PCI: keystone: Use platform_get_resource_byname() to get memory resources
PCI: keystone: Perform host initialization in a single function
dt-bindings: PCI: keystone: Add "reg-names" binding information
PCI: keystone: Cleanup error_irq configuration
PCI: keystone: Add start_link()/stop_link() dw_pcie_ops
PCI: dwc: Remove default MSI initialization for platform specific MSI chips
PCI: dwc: Remove Keystone specific dw_pcie_host_ops
PCI: keystone: Use Keystone specific msi_irq_chip
PCI: dwc: Add support to use non default msi_irq_chip
PCI: keystone: Cleanup ks_pcie_msi_irq_handler()
PCI: keystone: Use hwirq to get the MSI IRQ number offset
PCI: keystone: Add separate functions for configuring MSI and legacy interrupt
PCI: keystone: Cleanup interrupt related macros
# Conflicts:
# drivers/pci/controller/dwc/pcie-designware.h
- Simplify imx7d_pcie_wait_for_phy_pll_lock() by using
regmap_read_poll_timeout() (Andrey Smirnov)
- Drop imx6_pcie_wait_for_link() in favor of the more generic
dw_pcie_wait_for_link() (Andrey Smirnov)
- Return -ETIMEDOUT instead of -EINVAL from
imx6_pcie_wait_for_speed_change() (Andrey Smirnov)
- Remove unused PCIE_PL_PFLR_* constants from imx6 (Andrey Smirnov)
- Use shared PHY debug register definitions in imx6 (Andrey Smirnov)
- Use BIT() in imx6 (Andrey Smirnov)
- Simplify imx6 PHY bit operations (Andrey Smirnov)
- Simplify imx6 pcie_phy_poll_ack() (Andrey Smirnov)
- Use data types that match actual imx6 PHY register width (Andrey
Smirnov)
- Mark imx6 suspend support with drvdata flags instead of checking
variants (Andrey Smirnov)
- Sleep instead of delay in imx6_pcie_enable_ref_clk() (Andrey Smirnov)
* remotes/lorenzo/pci/imx:
PCI: imx6: Use usleep_range() in imx6_pcie_enable_ref_clk()
PCI: imx6: Use flags to indicate support for suspend
PCI: imx6: Restrict PHY register data to 16-bit
PCI: imx6: Simplify pcie_phy_poll_ack()
PCI: imx6: Simplify bit operations in PHY functions
PCI: imx6: Make use of BIT() in constant definitions
PCI: dwc: imx6: Share PHY debug register definitions
PCI: imx6: Remove PCIE_PL_PFLR_* constants
PCI: imx6: Return -ETIMEOUT from imx6_pcie_wait_for_speed_change()
PCI: imx6: Drop imx6_pcie_wait_for_link()
PCI: imx6: Simplify imx7d_pcie_wait_for_phy_pll_lock()
Currently DWC host does not support the remove callback, but nothing
prevents us from supporting it.
Save the root bus for clean up work in driver remove code paths to allow
DWC host drivers to implement their remove hook as, eg:
static int foo_pcie_remove(struct platform_device *pdev)
{
...
pci_stop_root_bus(pp->root_bus);
pci_remove_root_bus(pp->root_bus);
dw_pcie_free_msi(pp);
...
}
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Certain platforms like TI's AM654 do not have aseparate address space for
dbi2 instead they are accessed using the same address space as dbi
with some configuration bit set. In order to support such platforms,
add callbacks for accessing dbi2 address space.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Add const qualifier to struct dw_pcie_ep_ops member of
struct dw_pcie_ep.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Synopsys designware version >= 4.80 uses a separate register space
for programming ATU. The current code identifies if there exists a
separate register space by accessing the register address of ATUs
in designware version < 4.80. Accessing this address results in
abort in the case of K2G.
Fix it here by adding "version" member to struct dw_pcie. This should be
set by platform specific drivers and designware core will use it to
identify if the platform has a separate ATU space. For platforms which
have not populated the version member, the old method of identification
will still be used.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Now that Keystone started using its own msi_irq_chip, remove
Keystone specific callback functions defined in dw_pcie_host_ops.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Platforms using DesignWare IP use dw_pci_msi_bottom_irq_chip for
configuring the MSI controller logic within the DesignWare IP. However
certain platforms like Keystone (K2G) which uses DesignWare IP have
their own MSI controller logic. For handling such platforms,
the irqchip ops use msi_irq_ack(), msi_set_irq(), msi_clear_irq()
callback functions.
Add support to use different msi_irq_chip with default set to
dw_pci_msi_bottom_irq_chip. This is in preparation to get rid of
msi_irq_ack(), msi_set_irq(), msi_clear_irq() and other Keystone
specific dw_pcie_host_ops.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
- Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
endpoint framework (Wen Yang)
- Add interface to discover supported endpoint features to replace a
bitfield that wasn't flexible enough (Kishon Vijay Abraham I)
- Implement the new supported-feature interface for designware-plat,
dra7xx, rockchip, cadence (Kishon Vijay Abraham I)
- Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)
- Add layerscape endpoint mode support (Xiaowei Bao)
* remotes/lorenzo/pci/endpoint:
misc: pci_endpoint_test: Add the layerscape EP device support
PCI: layerscape: Add EP mode support
arm64: dts: Add the PCIE EP node in dts
dt-bindings: add DT binding for the layerscape PCIe controller with EP mode
PCI: endpoint: Remove features member in struct pci_epc
PCI: designware-plat: Remove setting epc->features in Designware plat EP driver
PCI: rockchip: Remove pci_epf_linkup() from Rockchip EP driver
PCI: cadence: Remove pci_epf_linkup() from Cadence EP driver
PCI: pci-epf-test: Use pci_epc_get_features() to get EPC features
PCI: pci-epf-test: Do not allocate next BARs memory if current BAR is 64Bit
PCI: pci-epf-test: Remove setting epf_bar flags in function driver
PCI: endpoint: Fix pci_epf_alloc_space() to set correct MEM TYPE flags
PCI: endpoint: Add helper to get first unreserved BAR
PCI: cadence: Populate ->get_features() cdns_pcie_epc_ops
PCI: rockchip: Populate ->get_features() dw_pcie_ep_ops
PCI: pci-dra7xx: Populate ->get_features() dw_pcie_ep_ops
PCI: designware-plat: Populate ->get_features() dw_pcie_ep_ops
PCI: dwc: Add ->get_features() callback function to dw_pcie_ep_ops
PCI: endpoint: Add new pci_epc_ops to get EPC features
PCI: endpoint: functions: Use memcpy_fromio()/memcpy_toio()
Each platform using Designware PCIe core can support different set of
endpoint features. Add a new callback function ->get_features() in
dw_pcie_ep_ops so that each platform using Designware PCIe core can
advertise its supported features to the endpoint function driver.
Tested-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
