When Link up fails during driver probe, controller is kept powered
on, even when controller is not configured as hot plug capable.
This results in more power consumption. Turn off controller when
no link detected during driver probe, only when controller does not
have hot-plug capability.
Ignore resume and remove AI's when no link during probe for no
hot-pluggable controllers.
Ignore Link state check for VDK, on which it cannot be detected.
Bug 4688706
Change-Id: I80a2b5845d48b07f25f65dc7cf5509aeb5778399
Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3246221
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
The 'core_init_notifier' has been removed from the pci_epc_features
structure in Linux v6.10. Given that this is a static structure and it
is initialised as 'false', we don't need to explicitly initialise this
because it will always be initialised as 'false' by default for kernels
that support this.
Bug 4787193
Bug 4593750
Change-Id: Ic2abaa3d2ab1a5c766a805936fd8ab394214bf42
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3233999
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Skip T264 PCIE drivers for the few kernels like jammy-src, rhivos-1 and
stable.
Bug 4911768
Change-Id: I198fb279712594a69950b72d6b8f14a9ef151e5f
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
To avoid the duplicate function defintion between the header and
source, use the proper config to protect it.
Bug 4911768
Change-Id: I8d6880833c122eb2eb7194929eb5ea2cb78a9c45
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Add support for handling the PEX WAKE GPIO (pex_wake_gpiod) by
parsing the pex-wake GPIO from the device tree and setup the
interrupt line.
Enable and disable the wake-up interrupt during system
suspend/resume.
Bug 4788812
Change-Id: Ie8936aa9cc551db1a5d24b277b091de5fbc0439e
Signed-off-by: Revanth Kumar Uppala <ruppala@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3212875
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
When Root port applies secondary bus reset(SBR) or link disable, EP_RESET
interrupt is received at Endpoint. On EP_RESET poll for detect reset LTSSM
state which confirms that SBR reset released or link disable is cleared.
After polling perform Endpoint controller cold reset.
Due to HW bug 4777981, C2 x2/x1 LTSSM state doesn't move to detect reset
when SBR reset is released, instead it stays in hot reset state. In this
case perform Endpoint controller cold reset after poll timeout. PCIe link
still comes up in this case.
Bug 4777981
Bug 4785875
Change-Id: I89402aa7c963082510170b88a1f7a4ec481162be
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3197116
Reviewed-by: Nagarjuna Kristam <nkristam@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Issue:
When XDMA interrupt is received and only error is set, interrupt is not
processed resulting in DMA HW halt and no further transfers working.
Fix:
Process XDMA irq, when either transfer complete or error status is set.
Bug 4747322
Change-Id: Ic71f3bf93343e986a1f4be9b570bcc36f03afeeb
Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3175952
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Tegra DMA driver functions are defined in nvidia-t264 repo and these
functions are used in nvidia-oot repo. Prototypes of these functions
are defined in nvidia-oot repo header file tegra-pcie-dma.h. Enable
CONFIG_PCIE_TEGRA_DMA flag to expose the function prototypes to the
drivers in nvidia-oot repo. This functions should be exposed only if
nvidia-t264 drivers are included in kernel compilation.
Bug 4712065
Change-Id: I74bb98bd9efbf2e36ed05aae866760a92a4ee7dd
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3164961
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
When PCIe link is disabled or secondary bus reset is done by RP,
EP LTSSM state goes to link disable or hot reset respectively.
Update the LTSSM state check accordingly to support link disable
and secondary bus reset.
XTL_EP_PRI_BAR_CONFIG and XTL_EP_PRI_RESIZE_BAR1 are part of
hot reset domain, when link is going through hot reset, these
registers are not accessible. So, remove these register programming
in tegra264_pcie_ep_clear_bar(). After hot reset these registers
come back with reset values.
Bug 4712053
Change-Id: Ieaf37ed9fed6722db8a16027947121b1cfd1ef4c
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3163927
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: Nagarjuna Kristam <nkristam@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
When XDMA error is observed driver resets the XDMA engine.
xdma_ll_ch_init() function is called to reinitialize the
XDMA engine. Incorrect value is passed as the argument for
channel type. Fix this issue by using correct variable for
channel type.
Bug 4707453
Change-Id: Ic06563d599bfd7c0979c9db0a20cebeaa18fe3c8
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3163925
Reviewed-by: Nagarjuna Kristam <nkristam@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
The pci_epc_features structure was updated in Linux v6.9 to move various
fields under a new pci_epc_bar_desc structure. Use conftest to determine
if the new pci_epc_bar_desc structure is present.
Finally, add the endpoint alignment for the inbound ATU on Tegra264
which is 64kB.
Bug 4627271
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Change-Id: I074e19ca53cea0e13d9872b240a023dd83779ae7
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3129630
Reviewed-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
The only functions needed from the private pci.h header are
pci_dev_is_disconnected() and of_get_pci_domain_nr().
Starting with Linux v6.9, pci_dev_is_disconnected() has been moved to
the public header and now the private header conflicts with the public
due to multiple definitions. It is better to remove the private pci.h
header file and backport the upstream change that moves the definition
of pci_dev_is_disconnected() to the public header.
With regard to the function of_get_pci_domain_nr(), just declare an
extern for the function prototype in the driver file rather than
copying the entire kernel header.
Bug 4471899
Change-Id: I10e7c3c6a92e9ba87153b2682cc3e69ced8c1a31
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3117272
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Per PCIe r5.0, 6.6.1 wait for 100 ms after DLL up. Optimize PCIe link up
poll logic. Add resume_noirq() callback back function in PCIe driver and
call tegra264_pcie_init() to deassert PERST# and get PCIe link up.
Also, fix minor coding style issues.
Bug 4404453
Change-Id: Iad2d22166eb0c80a20b74ada2ee2766f8d3e174f
Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-t264/+/3107413
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Remvoe the existing makefile as preparation to merge T264 specific
PCIE drivers into core repo.
Bug 4911768
Change-Id: Ifa65e36b5253bf2dc4ab62fe8caaf10a53e7cff3
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
The L4T packaging needs the soc specific dummy driver to be
available always. However, it is not available in generic build and
it creates the packaging/configuration fail.
Add soc specific dummy driver for pcie so that the respective binary
should be available always.
Bug 4695516
Change-Id: Ic40e60a12de35cebc7e9acec9b09e39aa267276b
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3154314
Tested-by: Ashish Mhetre <amhetre@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Tested-by: Laxman Dewangan <ldewangan@nvidia.com>
GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
