Commit Graph

1279407 Commits

Author SHA1 Message Date
Niklas Cassel
e242f26f63 PCI: dw-rockchip: Add endpoint mode support
The PCIe controller in rk3568 and rk3588 can operate in endpoint mode.

This endpoint mode support heavily leverages the existing code in
pcie-designware-ep.c.

Add support for endpoint mode to the existing pcie-dw-rockchip glue
driver.

[kwilczynski: squash with patch adding the PCI_ENDPOINT dependency]
Link: https://lore.kernel.org/linux-pci/20240607-rockchip-pcie-ep-v1-v5-10-0a042d6b0049@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:29:36 -05:00
Niklas Cassel
49a0925d17 PCI: dw-rockchip: Refactor the driver to prepare for EP mode
Refactor the driver to prepare for EP mode.

Add of-match data to the existing compatible, and explicitly define it as
DW_PCIE_RC_TYPE. This way, we will be able to add EP mode in a follow-up
commit in a much less intrusive way, which makes the follow-up commit much
easier to review.

No functional change intended.

Link: https://lore.kernel.org/linux-pci/20240607-rockchip-pcie-ep-v1-v5-9-0a042d6b0049@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:29:05 -05:00
Niklas Cassel
d8b864c95d PCI: dw-rockchip: Add rockchip_pcie_get_ltssm() helper
Add a rockchip_pcie_ltssm() helper function that reads the LTSSM status.

This helper will be used in additional places in follow-up commits.

Link: https://lore.kernel.org/linux-pci/20240607-rockchip-pcie-ep-v1-v5-8-0a042d6b0049@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:28:57 -05:00
Niklas Cassel
2baa5fc389 PCI: dw-rockchip: Fix weird indentation
Fix the indentation of rockchip_pcie_{readl,writel}_apb() parameters to
match the opening parenthesis.

Link: https://lore.kernel.org/linux-pci/20240607-rockchip-pcie-ep-v1-v5-7-0a042d6b0049@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:28:51 -05:00
Niklas Cassel
28b8d7793b PCI: dw-rockchip: Fix initial PERST# GPIO value
PERST# is active low according to the PCIe specification.

However, the existing pcie-dw-rockchip.c driver does:

  gpiod_set_value(..., 0); msleep(100); gpiod_set_value(..., 1);

when asserting + deasserting PERST#.

This is of course wrong, but because all the device trees for this
compatible string have also incorrectly marked this GPIO as ACTIVE_HIGH:

  $ git grep -B 10 reset-gpios arch/arm64/boot/dts/rockchip/rk3568*
  $ git grep -B 10 reset-gpios arch/arm64/boot/dts/rockchip/rk3588*

The actual toggling of PERST# is correct, and we cannot change it anyway,
since that would break device tree compatibility.

However, this driver does request the GPIO to be initialized as
GPIOD_OUT_HIGH, which does cause a silly sequence where PERST# gets
toggled back and forth for no good reason.

Fix this by requesting the GPIO to be initialized as GPIOD_OUT_LOW (which
for this driver means PERST# asserted).

This will avoid an unnecessary signal change where PERST# gets deasserted
(by devm_gpiod_get_optional()) and then gets asserted (by
rockchip_pcie_start_link()) just a few instructions later.

Before patch, debug prints on EP side, when booting RC:

  [  845.606810] pci: PERST# asserted by host!
  [  852.483985] pci: PERST# de-asserted by host!
  [  852.503041] pci: PERST# asserted by host!
  [  852.610318] pci: PERST# de-asserted by host!

After patch, debug prints on EP side, when booting RC:

  [  125.107921] pci: PERST# asserted by host!
  [  132.111429] pci: PERST# de-asserted by host!

This extra, very short, PERST# assertion + deassertion has been reported to
cause issues with certain WLAN controllers, e.g. RTL8822CE.

Fixes: 0e898eb8df ("PCI: rockchip-dwc: Add Rockchip RK356X host controller driver")
Link: https://lore.kernel.org/linux-pci/20240417164227.398901-1-cassel@kernel.org
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Jianfeng Liu <liujianfeng1994@gmail.com>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: stable@vger.kernel.org	# v5.15+
2024-07-09 18:28:40 -05:00
Uwe Kleine-König
206c4f778b PCI: dw-rockchip: Add error messages in .probe() error paths
Drivers that silently fail to probe provide a bad user experience and
make it unnecessarily hard to debug such a failure.

Fix it by using dev_err_probe() instead of a plain return.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20240227141256.413055-2-ukleinek@debian.org
Signed-off-by: Uwe Kleine-König <ukleinek@debian.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jesper Nilsson <jesper.nilsson@axis.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:28:37 -05:00
Manivannan Sadhasivam
840b7a5edf PCI: rockchip: Use GPIOD_OUT_LOW flag while requesting ep_gpio
Rockchip platforms use 'GPIO_ACTIVE_HIGH' flag in the devicetree definition
for ep_gpio. This means, whatever the logical value set by the driver for
the ep_gpio, physical line will output the same logic level.

For instance,

  gpiod_set_value_cansleep(rockchip->ep_gpio, 0); --> Level low
  gpiod_set_value_cansleep(rockchip->ep_gpio, 1); --> Level high

But while requesting the ep_gpio, GPIOD_OUT_HIGH flag is currently used.
Now, this also causes the physical line to output 'high' creating trouble
for endpoint devices during host reboot.

When host reboot happens, the ep_gpio will initially output 'low' due to
the GPIO getting reset to its POR value. Then during host controller probe,
it will output 'high' due to GPIOD_OUT_HIGH flag. Then during
rockchip_pcie_host_init_port(), it will first output 'low' and then 'high'
indicating the completion of controller initialization.

On the endpoint side, each output 'low' of ep_gpio is accounted for PERST#
assert and 'high' for PERST# deassert. With the above mentioned flow during
host reboot, endpoint will witness below state changes for PERST#:

  (1) PERST# assert - GPIO POR state
  (2) PERST# deassert - GPIOD_OUT_HIGH while requesting GPIO
  (3) PERST# assert - rockchip_pcie_host_init_port()
  (4) PERST# deassert - rockchip_pcie_host_init_port()

Now the time interval between (2) and (3) is very short as both happen
during the driver probe(), and this results in a race in the endpoint.
Because, before completing the PERST# deassertion in (2), endpoint got
another PERST# assert in (3).

A proper way to fix this issue is to change the GPIOD_OUT_HIGH flag in (2)
to GPIOD_OUT_LOW. Because the usual convention is to request the GPIO with
a state corresponding to its 'initial/default' value and let the driver
change the state of the GPIO when required.

As per that, the ep_gpio should be requested with GPIOD_OUT_LOW as it
corresponds to the POR value of '0' (PERST# assert in the endpoint). Then
the driver can change the state of the ep_gpio later in
rockchip_pcie_host_init_port() as per the initialization sequence.

This fixes the firmware crash issue in Qcom based modems connected to
Rockpro64 based board.

Fixes: e77f847df5 ("PCI: rockchip: Add Rockchip PCIe controller support")
Closes: https://lore.kernel.org/mhi/20240402045647.GG2933@thinkpad/
Link: https://lore.kernel.org/linux-pci/20240416-pci-rockchip-perst-fix-v1-1-4800b1d4d954@linaro.org
Reported-by: Slark Xiao <slark_xiao@163.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Cc: stable@vger.kernel.org	# v4.9
2024-07-09 18:28:33 -05:00
Damien Le Moal
70a7bfb1e5 PCI: rockchip-host: Wait 100ms after reset before starting configuration
PCIe r6.0, sec 6.6.1, states that the host should wait for at least 100
msec from the end of a conventional reset (PERST# is de-asserted) before
sending a configuration request to ensure that the device is able to
respond with a "Request Retry Status" completion.

Add the PCIE_T_RRS_READY_MS macro to define this wait time and modify
rockchip_pcie_host_init_port() to add this 100ms sleep after deasserting
PERST# using the ep_gpio GPIO.

Link: https://lore.kernel.org/linux-pci/20240413004120.1099089-3-dlemoal@kernel.org
Suggested-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:28:31 -05:00
Damien Le Moal
c47f90be4c PCI: rockchip-host: Fix rockchip_pcie_host_init_port() PERST# handling
PCIe CEM r5.1, sec 2.9.2, mandates that the PERST# signal must remain
asserted for at least 100 usec (Tperst-clk) after the PCIe reference clock
becomes stable (if a reference clock is supplied), and for at least 100
msec after the power is stable (Tpvperl, defined by the macro
PCIE_T_PVPERL_MS).

Modify rockchip_pcie_host_init_port() to satisfy these constraints by
adding a sleep period before deasserting PERST# using the ep_gpio GPIO.
Since Tperst-clk is the shorter wait time, add an msleep() call for the
longer PCIE_T_PVPERL_MS milliseconds to handle both timing requirements.

Link: https://lore.kernel.org/linux-pci/20240413004120.1099089-2-dlemoal@kernel.org
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:28:27 -05:00
Niklas Cassel
9b10e877fc PCI: dwc: ep: Enforce DWC specific 64-bit BAR limitation
From the DWC EP databook 5.96a, section "3.5.7.1.4 General Rules for BAR
Setup (Fixed Mask or Programmable Mask Schemes Only)":

"Any pair (for example BARs 0 and 1) can be configured as one 64-bit BAR,
two 32-bit BARs, or one 32-bit BAR."

"BAR pairs cannot overlap to form a 64-bit BAR. For example, you cannot
combine BARs 1 and 2 to form a 64-bit BAR."

While this limitation does exist in some other PCI endpoint controllers,
e.g. cdns_pcie_ep_set_bar(), the limitation does not appear to be defined
in the PCIe specification itself, thus add an explicit check for this in
dw_pcie_ep_set_bar() (rather than pci_epc_set_bar()).

Link: https://lore.kernel.org/linux-pci/20240528134839.8817-2-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:21:39 -05:00
Manivannan Sadhasivam
b8747e10fd PCI: layerscape-ep: Use the generic dw_pcie_ep_linkdown() API to handle Link Down event
Now that dw_pcie_ep_linkdown() is available, use it. This also handles the
reinitialization of DWC non-sticky registers in addition to sending the
notification to EPF drivers.

Closes: https://lore.kernel.org/linux-pci/20240528195539.GA458945@bhelgaas
Link: https://lore.kernel.org/linux-pci/20240606-pci-deinit-v1-5-4395534520dc@linaro.org
Reported-by: Bjorn Helgaas <helgaas@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-07-09 18:21:11 -05:00
Manivannan Sadhasivam
574621166c PCI: qcom-ep: Use the generic dw_pcie_ep_linkdown() API to handle Link Down event
Now that the generic dw_pcie_ep_linkdown() API is available, use it. This
also handles the reinitialization of DWC non-sticky registers in addition
to sending the notification to EPF drivers.

Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-9-22832d0d456f@linaro.org
Tested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-07-09 18:20:49 -05:00
Manivannan Sadhasivam
245b9ebf7b PCI: dwc: ep: Remove dw_pcie_ep_init_notify() wrapper
Currently dw_pcie_ep_init_notify() wrapper just calls pci_epc_init_notify()
directly, so this wrapper provides no benefit to the glue drivers.

Remove it and call pci_epc_init_notify() directly from glue drivers.

Suggested-by: Bjorn Helgaas <helgaas@kernel.org>
Link: https://lore.kernel.org/linux-pci/20240606-pci-deinit-v1-1-4395534520dc@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-07-09 18:20:21 -05:00
Manivannan Sadhasivam
867ab111b2 PCI: dwc: ep: Add a generic dw_pcie_ep_linkdown() API to handle Link Down event
Per PCIe r6.0, sec 5.2, a Link Down event can happen under any of the
following circumstances:

  1. Fundamental/Hot reset
  2. Link disable transmission by upstream component
  3. Moving from L2/L3 to L0

In those cases, Link Down causes some non-sticky DWC registers to lose the
state (like REBAR, etc.), so drivers need to reinitialize them to function
properly once the link comes back again.

This is not a problem for drivers supporting PERST# IRQ, since they can
reinitialize the registers in the PERST# IRQ callback. But for the drivers
not supporting PERST#, there is no way they can reinitialize the registers
other than relying on Link Down IRQ received when the link goes down. So
add a DWC generic API dw_pcie_ep_linkdown() that reinitializes the
non-sticky registers and also notifies the EPF drivers about link going
down.

This API can also be used by the drivers supporting PERST# to handle the
scenario (2) mentioned above.

NOTE: For the sake of code organization, move the dw_pcie_ep_linkup()
definition just above dw_pcie_ep_linkdown().

Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-8-22832d0d456f@linaro.org
Tested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
[bhelgaas: update spec citation]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-07-09 18:20:18 -05:00
Frank Li
e1a4ec1a95 PCI: dwc: Add generic MSG TLP support for sending PME_Turn_Off when system suspend
Instead of relying on the vendor specific implementations to send the
PME_Turn_Off message, introduce a generic way of sending the message using
the MSG TLP.

This is achieved by reserving a region for MSG TLP of size
'pci->region_align', at the end of the first IORESOURCE_MEM window of the
host bridge. And then sending the PME_Turn_Off message during system
suspend with the help of iATU.

The reason for reserving the MSG TLP region at the end of the
IORESOURCE_MEM is to avoid generating holes in between, because when the
region is allocated using allocate_resource(), memory will be allocated
from the start of the window. Later, if memory gets allocated for an
endpoint of size bigger than 'region_align', there will be a hole between
MSG TLP region and endpoint memory.

This generic implementation is optional for the glue drivers and can be
overridden by a custom 'pme_turn_off' callback.

Link: https://lore.kernel.org/linux-pci/20240418-pme_msg-v8-5-a54265c39742@nxp.com
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:20:15 -05:00
Frank Li
9972b17712 PCI: Add PCIE_MSG_CODE_PME_TURN_OFF message macro
Add PCIE_MSG_CODE_PME_TURN_OFF macros to enable a PCIe host driver to send
PME_Turn_Off messages.

Link: https://lore.kernel.org/linux-pci/20240418-pme_msg-v8-4-a54265c39742@nxp.com
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:20:13 -05:00
Yoshihiro Shimoda
95cb8ff688 PCI: Add PCIE_MSG_CODE_ASSERT_INTx message macros
Add "Message Routing" and "INTx Mechanism Messages" macros to enable
a PCIe driver to send messages for INTx Interrupt Signaling.

Values from PCIe r6.1, sec 2.2.8 and 2.2.8.1.

Link: https://lore.kernel.org/linux-pci/20240418-pme_msg-v8-1-a54265c39742@nxp.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
2024-07-09 18:20:11 -05:00
Yoshihiro Shimoda
cd02e4b684 PCI: dwc: Add outbound MSG TLPs support
Add "code" and "routing" into struct dw_pcie_ob_atu_cfg for triggering
INTx IRQs by iATU in the PCIe endpoint mode in near the future.
PCIE_ATU_INHIBIT_PAYLOAD is set to issue TLP type of Msg instead of
MsgD. This implementation supports the data-less messages only for now.

Link: https://lore.kernel.org/linux-pci/20240418-pme_msg-v8-3-a54265c39742@nxp.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
2024-07-09 18:20:08 -05:00
Yoshihiro Shimoda
aa85ef61d8 PCI: dwc: Consolidate args of dw_pcie_prog_outbound_atu() into a structure
This is a preparation before adding the Msg-type outbound iATU
mapping. The respective update will require two more arguments added
to __dw_pcie_prog_outbound_atu(). That will make the already
complicated function prototype even more hard to comprehend accepting
_eight_ arguments.

To prevent that and keep the code more-or-less readable, move all the
outbound iATU-related arguments to a new config structure: struct
dw_pcie_ob_atu_cfg, and pass a pointer to dw_pcie_prog_outbound_atu(). The
structure should be locally defined and populated with the outbound iATU
settings implied by the caller context.

As a result of this change there is no longer need in having the two
distinctive methods for the Host and Endpoint outbound iATU setups since
the code can directly call the dw_pcie_prog_outbound_atu() method with the
config structure populated, so drop dw_pcie_prog_ep_outbound_atu().

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20240418-pme_msg-v8-2-a54265c39742@nxp.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
2024-07-09 18:20:05 -05:00
Frank Li
c2a57ee0f2 PCI: dwc: Fix index 0 incorrectly being interpreted as a free ATU slot
When PERST# assert and deassert happens on the PERST# supported platforms,
both iATU0 and iATU6 will map inbound window to BAR0. DMA will access the
area that was previously allocated (iATU0) for BAR0, instead of the new
area (iATU6) for BAR0.

Right now, this isn't an issue because both iATU0 and iATU6 should
translate inbound accesses to BAR0 to the same allocated memory area.
However, having two separate inbound mappings for the same BAR is a
disaster waiting to happen.

The mappings between PCI BAR and iATU inbound window are maintained in the
dw_pcie_ep::bar_to_atu[] array. While allocating a new inbound iATU map for
a BAR, dw_pcie_ep_inbound_atu() API checks for the availability of the
existing mapping in the array and if it is not found (i.e., value in the
array indexed by the BAR is found to be 0), it allocates a new map value
using find_first_zero_bit().

The issue is the existing logic failed to consider the fact that the map
value '0' is a valid value for BAR0, so find_first_zero_bit() will return
'0' as the map value for BAR0 (note that it returns the first zero bit
position).

Due to this, when PERST# assert + deassert happens on the PERST# supported
platforms, the inbound window allocation restarts from BAR0 and the
existing logic to find the BAR mapping will return '6' for BAR0 instead of
'0' due to the fact that it considers '0' as an invalid map value.

Fix this issue by always incrementing the map value before assigning to
bar_to_atu[] array and then decrementing it while fetching. This will make
sure that the map value '0' always represents the invalid mapping."

Fixes: 4284c88fff ("PCI: designware-ep: Allow pci_epc_set_bar() update inbound map address")
Closes: https://lore.kernel.org/linux-pci/ZXsRp+Lzg3x%2Fnhk3@x1-carbon/
Link: https://lore.kernel.org/linux-pci/20240412160841.925927-1-Frank.Li@nxp.com
Reported-by: Niklas Cassel <Niklas.Cassel@wdc.com>
Tested-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
2024-07-09 18:20:02 -05:00
Konrad Dybcio
b262518262 PCI: dwc: Use msleep() in dw_pcie_wait_for_link()
According to [1], msleep should be used for large sleeps, such as the
100-ish ms one in this function. Comply with the guide and use it.

[1] https://docs.kernel.org/timers/timers-howto.html

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/20240215-topic-pci_sleep-v2-1-79334884546b@linaro.org
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 18:19:58 -05:00
Alexander Stein
96447ede32 Documentation: PCI: pci-endpoint: Fix EPF ops list
With commit 5779dd0a7d ("PCI: endpoint: Use notification chain mechanism
to notify EPC events to EPF") the linkup callback has been removed and
replaced by EPC event notifications.

With commit 256ae47520 ("PCI: endpoint: Add pci_epf_ops to expose
function-specific attrs") a new (optional) add_cfs callback was added.
Update documentation accordingly.

Link: https://lore.kernel.org/linux-pci/20240418084924.1724703-1-alexander.stein@ew.tq-group.com
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 17:59:02 -05:00
Jiapeng Chong
1ae27dacae misc: pci_endpoint_test: Remove unused pci_endpoint_test_bar_{readl,writel} functions
These two functions are defined in the pci_endpoint_test.c file, but not
called elsewhere, so delete these unused functions.

This fixes the following warning:

  drivers/misc/pci_endpoint_test.c:144:19: warning: unused function 'pci_endpoint_test_bar_readl'.
  drivers/misc/pci_endpoint_test.c:150:20: warning: unused function 'pci_endpoint_test_bar_writel'.

No functional changes intended.

[kwilczynski: commit log]
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9064
Link: https://lore.kernel.org/linux-pci/20240704023227.87039-1-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2024-07-09 17:58:54 -05:00
Yoshihiro Shimoda
76084965a9 misc: pci_endpoint_test: Document policy about adding pci_device_id
Add a comment suggesting that if the endpoint controller Vendor and Device
ID are programmable, an existing entry might be usable for testing without
having to add an entry to pci_endpoint_test_tbl[].

Link: https://lore.kernel.org/linux-pci/20240611125057.1232873-6-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
2024-07-09 17:58:38 -05:00
Frank Li
a50c7de060 misc: pci_endpoint_test: Refactor dma_set_mask_and_coherent() logic
dma_set_mask_and_coherent() should never fail when the mask is >= 32bit,
unless the architecture has no DMA support. So no need to check for the
error and also no need to set dma_set_mask_and_coherent(32) as a fallback.

Even if dma_set_mask_and_coherent(48) fails due to the lack of DMA support
(theoretically), then dma_set_mask_and_coherent(32) will also fail for the
same reason. So the fallback doesn't make sense.

Simplify the code by setting the streaming and coherent DMA mask to 48
bits.

Link: https://lore.kernel.org/linux-pci/20240502195903.3191049-1-Frank.Li@nxp.com
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-07-09 17:57:59 -05:00
Niklas Cassel
2a35703a6a misc: pci_endpoint_test: Use memcpy_toio()/memcpy_fromio() for BAR tests
The current code uses writel()/readl(), which has an implicit memory
barrier for every single readl()/writel().

Additionally, reading 4 bytes at a time over the PCI bus is not really
optimal, considering that this code is running in an ioctl handler.

Use memcpy_toio()/memcpy_fromio() for BAR tests.

Before patch with a 4MB BAR:

  $ time /usr/bin/pcitest -b 1
  BAR1:           OKAY
  real    0m 1.56s

After patch with a 4MB BAR:

  $ time /usr/bin/pcitest -b 1
  BAR1:           OKAY
  real    0m 0.54s

Link: https://lore.kernel.org/linux-pci/20240322164139.678228-1-cassel@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
2024-07-09 17:57:27 -05:00
Niklas Cassel
199b03db86 misc: pci_endpoint_test: Add support for Rockchip rk3588
Rockchip rk3588 requires 64KB alignment for BARs.

While there is an existing device_id:vendor_id in the driver with 64KB
alignment, that device_id:vendor_id is am654, which uses BAR2 instead of
BAR0 as the test_reg_bar, and also has special is_am654_pci_dev() checks
in the driver to disallow BAR0. In order to allow testing all BARs, add a
new rk3588 entry in the driver.

We intentionally do not add the vendor id to pci_ids.h, since the policy
for that file is that the vendor id has to be used by multiple drivers.

Hopefully, this new entry will be short-lived, as there is a series on the
mailing list which intends to move the address alignment restrictions from
this driver to the endpoint side.

Add a new entry for rk3588 in order to allow us to test all BARs.

Link: https://lore.kernel.org/linux-pci/20240607-rockchip-pcie-ep-v1-v5-11-0a042d6b0049@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2024-07-09 17:56:33 -05:00
Dan Carpenter
6bba3c0ac5
PCI: endpoint: Fix error handling in epf_ntb_epc_cleanup()
There are two issues related to epf_ntb_epc_cleanup():

  1) It should call epf_ntb_config_sspad_bar_clear()
  2) The epf_ntb_bind() function should call epf_ntb_epc_cleanup()
     to cleanup.

I also changed the ordering a bit.  Unwinding should be done in the
mirror order from how they are allocated.

Fixes: e35f56bb03 ("PCI: endpoint: Support NTB transfer between RC and EP")
Link: https://lore.kernel.org/linux-pci/aaffbe8d-7094-4083-8146-185f4a84e8a1@moroto.mountain
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-07-04 14:40:53 +00:00
Dan Carpenter
8e0f5a96c5
PCI: endpoint: Clean up error handling in vpci_scan_bus()
Smatch complains about inconsistent NULL checking in vpci_scan_bus():

    drivers/pci/endpoint/functions/pci-epf-vntb.c:1024 vpci_scan_bus() error: we previously assumed 'vpci_bus' could be null (see line 1021)

Instead of printing an error message and then crashing we should return
an error code and clean up.

Also the NULL check is reversed so it prints an error for success
instead of failure.

Fixes: e35f56bb03 ("PCI: endpoint: Support NTB transfer between RC and EP")
Link: https://lore.kernel.org/linux-pci/68e0f6a4-fd57-45d0-945b-0876f2c8cb86@moroto.mountain
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
2024-07-04 14:40:53 +00:00
Greg Kroah-Hartman
03377a6989
PCI: endpoint: Make pci_epc_class struct constant
Now that the driver core allows for struct class to be in read-only
memory, we should make all 'class' structures declared at build time
placing them into read-only memory, instead of having to be dynamically
allocated at runtime.

Link: https://lore.kernel.org/linux-pci/2024061011-citable-herbicide-1095@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
2024-07-04 14:40:53 +00:00
Manivannan Sadhasivam
473b2cf9c4
PCI: endpoint: Introduce 'epc_deinit' event and notify the EPF drivers
As like the 'epc_init' event, that is used to signal the EPF drivers about
the EPC initialization, let's introduce 'epc_deinit' event that is used to
signal EPC deinitialization.

The EPC deinitialization applies only when any sort of fundamental reset
is supported by the endpoint controller as per the PCIe spec.

Reference: PCIe r6.0, sec 4.2.5.9.1 and 6.6.1.

Currently, some EPC drivers like pcie-qcom-ep and pcie-tegra194 support
PERST# as the fundamental reset. So the 'deinit' event will be notified to
the EPF drivers when PERST# assert happens in the above mentioned EPC
drivers.

The EPF drivers, on receiving the event through the epc_deinit() callback
should reset the EPF state machine and also cleanup any configuration that
got affected by the fundamental reset like BAR, DMA etc...

This change also warrants skipping the cleanups in unbind() if already done
in epc_deinit().

Link: https://lore.kernel.org/r/20240606-pci-deinit-v1-2-4395534520dc@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
2024-07-04 14:40:53 +00:00
Manivannan Sadhasivam
cfc2d4c515 PCI: endpoint: pci-epf-test: Handle Link Down event
Per PCIe r6.0, sec 5.2, a Link Down event can happen under any of the
following circumstances:

  1. Fundamental/Hot reset
  2. Link disable transmission by upstream component
  3. Moving from L2/L3 to L0

When the event happens, the EPC driver capable of detecting it may pass the
notification to the EPF driver through link_down() callback in 'struct
pci_epc_event_ops'.

While the PCIe spec has not defined the actual behavior of the endpoint
when the Link Down event happens, we may assume that at least the ongoing
transactions need to be stopped as the link won't be active, so
cancel the command handler work in the callback implementation
pci_epf_test_link_down(). The work will be started again in
pci_epf_test_link_up() once the link comes back again.

Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-10-22832d0d456f@linaro.org
Tested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
[bhelgaas: update spec citation]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-05-28 12:13:59 -05:00
Manivannan Sadhasivam
60bd3e039a PCI: endpoint: pci-epf-{mhi/test}: Move DMA initialization to EPC init callback
To maintain uniformity across EPF drivers, move DMA initialization to EPC
init callback. This will also allow us to deinit DMA during PERST# assert
in the further commits.

For EPC drivers without PERST#, DMA deinit will only happen during driver
unbind.

Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-6-22832d0d456f@linaro.org
Tested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-05-28 11:13:48 -05:00
Manivannan Sadhasivam
942ceba0e4 PCI: endpoint: pci-epf-test: Refactor pci_epf_test_unbind() function
Move the pci_epc_clear_bar() and pci_epf_free_space() code to respective
helper functions. This allows reusing the helpers in future commits.

This also requires moving the pci_epf_test_unbind() definition below
pci_epf_test_bind() to avoid forward declaration of the above helpers.

No functional change.

Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-5-22832d0d456f@linaro.org
Tested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-05-28 11:13:48 -05:00
Manivannan Sadhasivam
f58838d7fe PCI: endpoint: Rename BME to Bus Master Enable
BME which stands for 'Bus Master Enable' is not defined in the PCIe base
spec even though it is commonly referred in many places (vendor docs).  To
align with the spec, rename it to its expansion 'Bus Master Enable'.

Suggested-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-3-22832d0d456f@linaro.org
Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-4-22832d0d456f@linaro.org
Tested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
[bhelgaas: squash removal of irrelevant 'Link is enabled']
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-05-28 11:13:48 -05:00
Manivannan Sadhasivam
4edd7dc82b PCI: endpoint: Rename core_init() callback in 'struct pci_epc_event_ops' to epc_init()
core_init() callback is used to notify the EPC initialization event to the
EPF drivers. The 'core' prefix was used indicate that the controller IP
core has completed initialization. But it serves no purpose as the EPF
driver will only care about the EPC initialization as a whole and there is
no real benefit to distinguish the IP core part.

Rename the core_init() callback in 'struct pci_epc_event_ops' to epc_init()
to make it more clear.

Link: https://lore.kernel.org/linux-pci/20240430-pci-epf-rework-v4-2-22832d0d456f@linaro.org
Tested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-05-28 11:13:48 -05:00
Manivannan Sadhasivam
6859e4f22a PCI: endpoint: pci-epf-test: Use 'msix_capable' flag directly in pci_epf_test_alloc_space()
Instead of using a local variable to cache the 'msix_capable' flag, use it
directly to simplify the code.

Suggested-by: Niklas Cassel <cassel@kernel.org>
Link: https://lore.kernel.org/linux-pci/20240418-pci-epf-test-fix-v2-2-eacd54831444@linaro.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-05-28 11:13:48 -05:00
Manivannan Sadhasivam
5a5095a8bd PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init()
Instead of getting the epc_features from pci_epc_get_features() API, use
the cached pci_epf_test::epc_features value to avoid the NULL check. Since
the NULL check is already performed in pci_epf_test_bind(), having one more
check in pci_epf_test_core_init() is redundant and it is not possible to
hit the NULL pointer dereference.

Also with commit a01e7214be ("PCI: endpoint: Remove "core_init_notifier"
flag"), 'epc_features' got dereferenced without the NULL check, leading to
the following false positive Smatch warning:

  drivers/pci/endpoint/functions/pci-epf-test.c:784 pci_epf_test_core_init() error: we previously assumed 'epc_features' could be null (see line 747)

Thus, remove the redundant NULL check and also use the epc_features::
{msix_capable/msi_capable} flags directly to avoid local variables.

[kwilczynski: commit log]
Fixes: 5e50ee27d4 ("PCI: pci-epf-test: Add support to defer core initialization")
Closes: https://lore.kernel.org/linux-pci/024b5826-7180-4076-ae08-57d2584cca3f@moroto.mountain
Link: https://lore.kernel.org/linux-pci/20240418-pci-epf-test-fix-v2-1-eacd54831444@linaro.org
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
2024-05-28 11:13:48 -05:00
Christophe JAILLET
328e4dffbe PCI: endpoint: Remove unused field in struct pci_epf_group
In "struct pci_epf_group", the 'type_group' field is unused.

This was added, but already unused, by commit 70b3740f2c ("PCI: endpoint:
Automatically create a function specific attributes group").

Thus, remove it.

Found with cppcheck, unusedStructMember.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/6507d44b6c60a19af35a605e2d58050be8872ab6.1712341008.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2024-05-28 11:13:48 -05:00
Linus Torvalds
1613e604df Linux 6.10-rc1 2024-05-26 15:20:12 -07:00
Kent Overstreet
9b0abe7948 mm: percpu: Include smp.h in alloc_tag.h
percpu.h depends on smp.h, but doesn't include it directly because of
circular header dependency issues; percpu.h is needed in a bunch of low
level headers.

This fixes a randconfig build error on mips:

  include/linux/alloc_tag.h: In function '__alloc_tag_ref_set':
  include/asm-generic/percpu.h:31:40: error: implicit declaration of function 'raw_smp_processor_id' [-Werror=implicit-function-declaration]

Reported-by: kernel test robot <lkp@intel.com>
Fixes: 24e44cc22a ("mm: percpu: enable per-cpu allocation tagging")
Closes: https://lore.kernel.org/oe-kbuild-all/202405210052.DIrMXJNz-lkp@intel.com/
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2024-05-26 14:40:39 -07:00
Linus Torvalds
6fbf71854e Revert a patch causing a regression as described in the cset:
"This made a simple 'perf record -e cycles:pp make -j199' stop working on
     the Ampere ARM64 system Linus uses to test ARM64 kernels, as discussed
     at length in the threads in the Link tags below.
 
     The fix provided by Ian wasn't acceptable and work to fix this will take
     time we don't have at this point, so lets revert this and work on it on
     the next devel cycle."
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQR2GiIUctdOfX2qHhGyPKLppCJ+JwUCZlMhdgAKCRCyPKLppCJ+
 JzCNAPwM7gQLjeoCdkn9KDl1fj1R7/jBE/TsVqP9s1htc9vJEgD/UgLDkpdzlxBC
 HbndVTOrnvyV9ySA28654ODHpQxmXwM=
 =WJwT
 -----END PGP SIGNATURE-----

Merge tag 'perf-tools-fixes-for-v6.10-1-2024-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf tool fix from Arnaldo Carvalho de Melo:
 "Revert a patch causing a regression.

  This made a simple 'perf record -e cycles:pp make -j199' stop working
  on the Ampere ARM64 system Linus uses to test ARM64 kernels".

* tag 'perf-tools-fixes-for-v6.10-1-2024-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
  Revert "perf parse-events: Prefer sysfs/JSON hardware events over legacy"
2024-05-26 09:54:26 -07:00
Arnaldo Carvalho de Melo
4f1b067359 Revert "perf parse-events: Prefer sysfs/JSON hardware events over legacy"
This reverts commit 617824a7f0.

This made a simple 'perf record -e cycles:pp make -j199' stop working on
the Ampere ARM64 system Linus uses to test ARM64 kernels, as discussed
at length in the threads in the Link tags below.

The fix provided by Ian wasn't acceptable and work to fix this will take
time we don't have at this point, so lets revert this and work on it on
the next devel cycle.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Cc: Ethan Adams <j.ethan.adams@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tycho Andersen <tycho@tycho.pizza>
Cc: Yang Jihong <yangjihong@bytedance.com>
Link: https://lore.kernel.org/lkml/CAHk-=wi5Ri=yR2jBVk-4HzTzpoAWOgstr1LEvg_-OXtJvXXJOA@mail.gmail.com
Link: https://lore.kernel.org/lkml/CAHk-=wiWvtFyedDNpoV7a8Fq_FpbB+F5KmWK2xPY3QoYseOf_A@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2024-05-26 08:41:34 -03:00
Linus Torvalds
c13320499b four smb client fixes, including two important netfs integration fixes
-----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmZRYNIACgkQiiy9cAdy
 T1FhPAv7BQhGc2HrloB74G5EQaPaCFdWOihIKCZMc15oGsrsTuPpFvOBbV6E3dyZ
 HYthBS31nSO9Nyy6+J7zXyZGTys20rB8fbO7E9RiyTcZcKFbw3zdTyAoUlklnn3a
 0wwKzQLOYDMGdnLYbL7lQR1/qAoFq+NQ7gACn+HeASPxRbJ+7Y8+USHPimUtUw52
 XnJG4bfIDhZhoPIztNMeodR3lkvpzPy0eP4xE856e6z4I7VGHukqBwEnwytz23Op
 thciepFzK2S9G7C7s4VBe7nyko+6SH7VbumU7Zb9/1rSeDYaJOGnGFUFpeib50P9
 f5Mby8JM9pnnAURJ4/0P5sFyhcveBMuoOjQsbCKZnfxqqldQn4dLgG/oXCylXjNq
 mWRfPxIZwNLUqfAbocN1eczWG2ozwbrxJYzDbYz6RepyNKus0b6oniGGgU5Eo0Au
 OAZW/QJ567mzu5hfhn6iWyzsncwtyCLor/nM4buO5Vs68xsJIdsVLjGZRNrF7gpV
 ScE1TfDe
 =p0nS
 -----END PGP SIGNATURE-----

Merge tag '6.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - two important netfs integration fixes - including for a data
   corruption and also fixes for multiple xfstests

 - reenable swap support over SMB3

* tag '6.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Fix missing set of remote_i_size
  cifs: Fix smb3_insert_range() to move the zero_point
  cifs: update internal version number
  smb3: reenable swapfiles over SMB3 mounts
2024-05-25 22:33:10 -07:00
Linus Torvalds
9b62e02e63 16 hotfixes, 11 of which are cc:stable.
A few nilfs2 fixes, the remainder are for MM: a couple of selftests fixes,
 various singletons fixing various issues in various parts.
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZlIOUgAKCRDdBJ7gKXxA
 jrYnAP9UeOw8YchTIsjEllmAbTMAqWGI+54CU/qD78jdIHoVWAEAmp0QqgFW3r2p
 jze4jBkh3lGQjykTjkUskaR71h9AZww=
 =AHeV
 -----END PGP SIGNATURE-----

Merge tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "16 hotfixes, 11 of which are cc:stable.

  A few nilfs2 fixes, the remainder are for MM: a couple of selftests
  fixes, various singletons fixing various issues in various parts"

* tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/ksm: fix possible UAF of stable_node
  mm/memory-failure: fix handling of dissolved but not taken off from buddy pages
  mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again
  nilfs2: fix potential hang in nilfs_detach_log_writer()
  nilfs2: fix unexpected freezing of nilfs_segctor_sync()
  nilfs2: fix use-after-free of timer for log writer thread
  selftests/mm: fix build warnings on ppc64
  arm64: patching: fix handling of execmem addresses
  selftests/mm: compaction_test: fix bogus test success and reduce probability of OOM-killer invocation
  selftests/mm: compaction_test: fix incorrect write of zero to nr_hugepages
  selftests/mm: compaction_test: fix bogus test success on Aarch64
  mailmap: update email address for Satya Priya
  mm/huge_memory: don't unpoison huge_zero_folio
  kasan, fortify: properly rename memintrinsics
  lib: add version into /proc/allocinfo output
  mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL
2024-05-25 15:10:33 -07:00
Linus Torvalds
a0db36ed57 Misc fixes:
- Fix x86 IRQ vector leak caused by a CPU offlining race
 
  - Fix build failure in the riscv-imsic irqchip driver
    caused by an API-change semantic conflict
 
  - Fix use-after-free in irq_find_at_or_after()
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZRwMURHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1h/zQ//TTrgyXi6+1xXY4R0LDU45j+wavMTMkq3
 kM3eUeyXgy+FDtvLRVaYgEAYbtuR4LGFN9qmVuEHJPZQwpi3AFlnGFUFjFUvyE43
 xJuOtHoxFv3mj09VgRGsjZvzp8bxYSkEn3h0ryTWGUHzR+QmoQmYWrU6HExgXw3R
 +s8pvi14g6R/+PAy05cF0k1J7aeSsYaOfd38D/XnpyhuhXvPMS2eHgovV6I5Qhk4
 5lV6rzJv8XlKxVr7bOYJkRePE3z0HMtx0G7eo8eYERBQapHede18V8imv4OpUiua
 vmG8cFhF4Lq9KFdEtiVuf1X9/XH3PoEKTGA81oqQ9lLN9USx7ME/Peg6U5ezvEkp
 YmQx2LS12DWqYp5PZQTN0CHnfmMLgksmyGELM3JE/dFFCVh4HdpMrh+2wLwWGRJ3
 JLzAJh3YwcPhayLpNVgsSF9AtLKTkDoS0bHd43mHnB6VaEKkus8zbeuCxYAsUeMJ
 5wCZw3xQjTZEaMMNd1hJN5O/9TX2of+T6Z4C4cacMBmwpD7vX5oXmDYLE/wUHw6m
 9Z67fvOvTdIf3MkYSqjGXFKD1JobL/PmwCfaaGUQFVJkbX5WVNDk6C1zgs5FhmuY
 U/AcYfadbNdLVXrN3VLnX6Gmb7gFPShOAE1GgXGeszSReI4pbOUy2zopRGAEWSZS
 fRu8nyveGjw=
 =vxJh
 -----END PGP SIGNATURE-----

Merge tag 'irq-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Ingo Molnar:

 - Fix x86 IRQ vector leak caused by a CPU offlining race

 - Fix build failure in the riscv-imsic irqchip driver
   caused by an API-change semantic conflict

 - Fix use-after-free in irq_find_at_or_after()

* tag 'irq-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()
  genirq/cpuhotplug, x86/vector: Prevent vector leak during CPU offline
  irqchip/riscv-imsic: Fixup riscv_ipi_set_virq_range() conflict
2024-05-25 14:48:40 -07:00
Linus Torvalds
3a390f24b7 Miscellaneous fixes:
- Fix regressions of the new x86 CPU VFM (vendor/family/model)
    enumeration/matching code
 
  - Fix crash kernel detection on buggy firmware with
    non-compliant ACPI MADT tables
 
  - Address Kconfig warning
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZRvZwRHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1iDhg//fWdgn2x4B4hEiCQQVYGpHLua59jduucb
 oh+NF1jGu75obRu3gdQJLR7OYjxntWf2ryxpS+kkyLP6sYeMAoL4vnIoi5XJGJ13
 VG0BcbXA8asL2KEfVz66AENAGQjAGr7Bcg9urHIuw8Nz6lJqaFyQkdQJfeClWtdL
 zkgnCdooP1eREgfrQH5+hhTCrr/GwiFUU+wNKeIIpis1enMZYMiqA5U23w3DKlP8
 Jx0cRY7ysa63O/H9oD01edRPkZpfbMqAocVwc9v42zOjlJLZYAtAW4mSC+GhG9X6
 iGFWiW1ROBte/HYLE1LdKfahO990Tw0GsIcS42E8AtYfVu/W7U525SyKG100ndYH
 nVoUSOPWF8YCT810YtOEM2ueMQKZMEjB8yAp5QQIi2NMcgkFxNdVQiC8zFATisHd
 KFdEkH2fDGW9YiUNRBYjI/da3Q2v83JwAIKnYXmoFjcru4iJOPDIFdGZcJDh7oNW
 ys/SWSK5dJkbLz+cHm8E5ceLTpZTsFHJm1Vd1W2gU/jkESBW/2i1rZ757ykfHURe
 N7JUPI4g0DOVj8Elket9gnKD/xVFg/lsTnA1/5wxdWhWhJzZcM/XyICATno1/BaY
 STWUmUr6sTsoB4+2PRuFC2zaRqIstLbkmKOAlHezd4uIwFxznQAg1K8f8kHlqfLH
 l3VA8nRbOFc=
 =nIcm
 -----END PGP SIGNATURE-----

Merge tag 'x86-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:

 - Fix regressions of the new x86 CPU VFM (vendor/family/model)
   enumeration/matching code

 - Fix crash kernel detection on buggy firmware with
   non-compliant ACPI MADT tables

 - Address Kconfig warning

* tag 'x86-urgent-2024-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Fix x86_match_cpu() to match just X86_VENDOR_INTEL
  crypto: x86/aes-xts - switch to new Intel CPU model defines
  x86/topology: Handle bogus ACPI tables correctly
  x86/kconfig: Select ARCH_WANT_FRAME_POINTERS again when UNWINDER_FRAME_POINTER=y
2024-05-25 14:40:09 -07:00
Linus Torvalds
56676c4c06 ipmi: Mostly updates for deprecated interfaces
These changes are mostly updates for deprecated interfaces,
 platform.remove and converting from a tasklet to a BH workqueue.  Also
 use HAS_IOPORT for disabling inb()/outb().
 
 -corey
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE/Q1c5nzg9ZpmiCaGYfOMkJGb/4EFAmZCYRMACgkQYfOMkJGb
 /4FqGBAAq2KsgdpCSquJMl8uvlxXzxpZJsUpZBMPeZyI9kJUPimNVvkd0iz2zx4C
 0yU9UxUcIViU1MuL8KyRhC/vpoDg3cZLspvkntWoU/qGcfQMsnxgbuogBKXTjRWt
 cOi/rFSBFXMv0gQ+aNWlFHVZdzQQ1vuiIIZNvIBNjvfaJargYXlUX91ejY/1DZHc
 Eeq0N7AiswPD0q1KZjJ5W2YYwqiNRubUbA2eq2mFvTbODi0JPgyNYI0qikMTFGM/
 L2vFRylqzMr63uFh5j+Dc1oJqdc+XtqOMIDd+34h+43td7XbBW+magdNBBLzMuYt
 HmrvBvlNH1zjXVEpAkqrOFnBYCisynKXvco7rhyTX1MaLuBo+pFNBzFlOw9s6Ydv
 +4VIBMcyz7ZVcOQgrZX5d5ly5Oh5wjAnIN3IPeDczaieMlfhk+e/MJBwDNT/7frD
 j7bnQ0tuzMvMhtZ/YfdzOZR/08cBMPRB2EJBGIQrTZeKJPcTLW73IkbQqQ6/8San
 dOgOqOGx/mAegf0vRp8ZPlyYAlSZ5l5cANRyWZjG8+EkajFB26iJmXY0jyf1yZ+I
 Vzb79YqmtB2eu/fFuJ5suF4UkvI8RLFEJxnPRvBe+420rFHs4yHL5TzyzIOACL29
 OGAoatvC7qBWNYFWh8P3jFyxScVBC4lV1FYWwoCwOFevMz9kAXw=
 =IPex
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-6.10-1' of https://github.com/cminyard/linux-ipmi

Pull ipmi updates from Corey Minyard:
 "Mostly updates for deprecated interfaces, platform.remove and
  converting from a tasklet to a BH workqueue.

  Also use HAS_IOPORT for disabling inb()/outb()"

* tag 'for-linus-6.10-1' of https://github.com/cminyard/linux-ipmi:
  ipmi: kcs_bmc_npcm7xx: Convert to platform remove callback returning void
  ipmi: kcs_bmc_aspeed: Convert to platform remove callback returning void
  ipmi: ipmi_ssif: Convert to platform remove callback returning void
  ipmi: ipmi_si_platform: Convert to platform remove callback returning void
  ipmi: ipmi_powernv: Convert to platform remove callback returning void
  ipmi: bt-bmc: Convert to platform remove callback returning void
  char: ipmi: handle HAS_IOPORT dependencies
  ipmi: Convert from tasklet to BH workqueue
2024-05-25 14:32:29 -07:00
Linus Torvalds
74eca356f6 We have a series from Xiubo that adds support for additional access
checks based on MDS auth caps which were recently made available to
 clients.  This is needed to prevent scenarios where the MDS quietly
 discards updates that a UID-restricted client previously (wrongfully)
 acked to the user.  Other than that, just a documentation fixup.
 -----BEGIN PGP SIGNATURE-----
 
 iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmZRsm0THGlkcnlvbW92
 QGdtYWlsLmNvbQAKCRBKf944AhHzi6++B/4o7j4CNzjJcBw9UgxEUugwJYBe2Ht3
 vSTUkHD9NILVgrYSHNhgkCdvU8ckv8Sd+7W/Kb0BC/GRyQd57F7zoM6mvR1WMozt
 lLbYU/kdVI+TcIY2bhupMma5f+nWv6vIBTzca78UhogEBuIEYHAG3BnNaT/AEqF+
 yZ3uQEVQ2bHmwbPn3A5dibYxOR8zLyhmaq/RUvqpiiYcSkEfZ6QqKiMlZkcVD7F8
 c+NfjwXXGNTXDhfIbG4VndQi7xLXk3GI5E8xvdo2ALwumfp2KdVlMEYT8SHggSPS
 A8bWq+d5o7uVV6WviNK63XcGRpadCSSSL310vR78K+tNIIq5dnI81IsU
 =6c1e
 -----END PGP SIGNATURE-----

Merge tag 'ceph-for-6.10-rc1' of https://github.com/ceph/ceph-client

Pull ceph updates from Ilya Dryomov:
 "A series from Xiubo that adds support for additional access checks
  based on MDS auth caps which were recently made available to clients.

  This is needed to prevent scenarios where the MDS quietly discards
  updates that a UID-restricted client previously (wrongfully) acked to
  the user.

  Other than that, just a documentation fixup"

* tag 'ceph-for-6.10-rc1' of https://github.com/ceph/ceph-client:
  doc: ceph: update userspace command to get CephFS metadata
  ceph: add CEPHFS_FEATURE_MDS_AUTH_CAPS_CHECK feature bit
  ceph: check the cephx mds auth access for async dirop
  ceph: check the cephx mds auth access for open
  ceph: check the cephx mds auth access for setattr
  ceph: add ceph_mds_check_access() helper
  ceph: save cap_auths in MDS client when session is opened
2024-05-25 14:23:58 -07:00
Linus Torvalds
89b61ca478 driver ntfs3 for linux 6.10
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEh0DEKNP0I9IjwfWEqbAzH4MkB7YFAmZQY1sACgkQqbAzH4Mk
 B7bMZQ/9Ea7GFiNcIS+tCOIn5VhmGP7Dwd92T0jS9W0AiTkM83hql4lzamrSTR7B
 7tQ2lNakUYIwMUqrZgTrzx5eEgWXU4YH43Az+0m/lfTpBGr0wKiXB/3yu84sdoCG
 87PkxOO+hDdK11zQ+hHkVvNBpmYSNh9GIPET4L+SMNgJztJ3ZnYWSmne0EBdI3S7
 PAeFMgxag67p1zqg4qIVrO4PMeXd9WBsKL3oO1E/abXoQnHV6I5PBdYHQaafVRy8
 Meokx+uyJALScI/AEEigBlCDQ6MYBIWvtb4T4+eSJCSaMMqCRj66zynEPL5oY6Z3
 Ah2IR+8wiwKjDMyYODZI8nqwJtZOVne0EprHNLzu+dQ4e60N5gQbPWRWlcWJmHaT
 2rhNv1uUSnXnU3oLaqkXza9nayuWPstQlgG/I92B/GHPk4c+K5Fxtiv/wmzNn77h
 qzqNuXPFC0tnvbmNGMxEOzRM/duaoyf5nurBpO0Xlo2dl29RAhWfXpyGu3IVSt7P
 03bkXt9FdoAyyDHH8i24yKqPLnLcDZwH+63qDPPz6EgD07DZDdBIpjosbJF/AGW7
 eGvsFKcGM5zH0ktZ8ZYN5a66/jaW8NP/e+vUa5RIwipdhwCn7ZEf1ERjfS14w+yD
 cbgKdbORm6DV3psM9mI/XxWLeihr0daeZWWB2GaSy+8JuYCFYVI=
 =IALr
 -----END PGP SIGNATURE-----

Merge tag 'ntfs3_for_6.10' of https://github.com/Paragon-Software-Group/linux-ntfs3

Pull ntfs3 updates from Konstantin Komarov:
 "Fixes:
   - reusing of the file index (could cause the file to be trimmed)
   - infinite dir enumeration
   - taking DOS names into account during link counting
   - le32_to_cpu conversion, 32 bit overflow, NULL check
   - some code was refactored

  Changes:
   - removed max link count info display during driver init

  Remove:
   - atomic_open has been removed for lack of use"

* tag 'ntfs3_for_6.10' of https://github.com/Paragon-Software-Group/linux-ntfs3:
  fs/ntfs3: Break dir enumeration if directory contents error
  fs/ntfs3: Fix case when index is reused during tree transformation
  fs/ntfs3: Mark volume as dirty if xattr is broken
  fs/ntfs3: Always make file nonresident on fallocate call
  fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode
  fs/ntfs3: Use variable length array instead of fixed size
  fs/ntfs3: Use 64 bit variable to avoid 32 bit overflow
  fs/ntfs3: Check 'folio' pointer for NULL
  fs/ntfs3: Missed le32_to_cpu conversion
  fs/ntfs3: Remove max link count info display during driver init
  fs/ntfs3: Taking DOS names into account during link counting
  fs/ntfs3: remove atomic_open
  fs/ntfs3: use kcalloc() instead of kzalloc()
2024-05-25 14:19:01 -07:00