The register to enable/disable the write-permission of DBI RO
registers should be accessed via the CFG_ADDR/CFG_DATA registers
instead of accessing directly.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
In the current implementation, u-boot creates iommu mappings only
for PCI devices enumarated at boot time thus does not take into
account more dynamic scenarios such as SR-IOV or PCI hot-plug.
Add an u-boot env var and a device tree property (to be used for
example in more static scenarios such as hardwired PCI endpoints
that get initialized later in the system setup) that would allow
two things:
- for a SRIOV capable PCI EP identified by its B.D.F specify
the maximum number of VFs that will ever be created for it
- for hot-plug case, specify the B.D.F with which the device
will show up on the PCI bus
More details can be found in the included documentation:
arch/arm/cpu/armv8/fsl-layerscape/doc/README.pci_iommu_extra
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Fix duplication of this code by placing it in a common function.
Furthermore, the resulting function will be re-used in upcoming
patches.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Move the pci device related fdt fixup in a function in order to
re-use it in a following patch. While at it, improve the error
handling.
Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
LX2160A rev2 uses different PCIe controller, so EP mode DT
nodes also need to be fixed up.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
As required by PCI Express spec a delay for at least 100ms after
de-asserting PERST# signal is needed before link training is enabled.
Linux kernels prior to 5.8 version do not automatically disable link
training before de-asserting PERST# signal, therefore this requirement is
not fulfilled.
Above requirement is needed for proper detection of some Compex PCIe WiFi
cards. Otherwise Linux kernel cannot detect it.
To allow using those PCIe cards with older Linux kernel versions booted by
U-Boot compiled with U-Boot a37xx pci driver, disable link training in
U-Boot when unloading this pci driver.
Thanks to DM_FLAG_OS_PREPARE flag, U-Boot automatically unload this driver
when booting Linux kernel.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
The fdt_fixup_pcie_ls() scans all PCI devices and assumes that all PCI
root devices are layerscape PCIe controllers. Unfortunately, this is not
true for the LS1028A. There is one additional static PCI root complex
(this contains the networking devices) which has nothing to do with the
layerscape PCIe controllers. On recent U-Boot versions this results in
the following panic:
"Synchronous Abort" handler, esr 0x96000044
elr: 000000009602fa04 lr : 000000009602f9f4 (reloc)
elr: 00000000fbd73a04 lr : 00000000fbd739f4
x0 : 0080000002000101 x1 : 0000000000000000
x2 : 00000000fbde9000 x3 : 0000000000000001
x4 : 0000000000000000 x5 : 0000000000000030
x6 : 00000000fbdbd460 x7 : 00000000fbb3d3a0
x8 : 0000000000000002 x9 : 000000000000000c
x10: 00000000ffffffe8 x11: 0000000000000006
x12: 000000000001869f x13: 0000000000000a2c
x14: 00000000fbb3d2cc x15: 00000000ffffffff
x16: 0000000000010000 x17: 0000000000000000
x18: 00000000fbb3fda0 x19: 0000000000000800
x20: 0000000000000000 x21: 00000001f0000000
x22: 0000000000000800 x23: 0000000000000009
x24: 00000000fbdc3c1b x25: 00000000fbdc28e5
x26: 00000000fbdcc008 x27: 00000000fbdc16e2
x28: 000000000f000000 x29: 00000000fbb3d3a0
Code: 394072a1 f94006a0 34000041 5ac00a94 (b8336814)
Resetting CPU ...
This bug already existed in former versions, but the spurious write was
never trapped, because the destination address was a valid address (by
pure luck).
Make sure the PCI root is actually one of the expected PCIe layerscape
controllers by matching its compatible string.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
On the mt7623 platform, if one port enable fail and other port
enable succeed. It will hang on when using pci enum
because the resource was not released correctly.
Signed-off-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
On the mt7623 platform, if one port enable fail and other port
enable succeed. It will hang on when using pci enum
because the resource was not released correctly.
Signed-off-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
For proper initialization of aardvark pci driver it is required to
de-assert reset GPIO. So depeneds on DM_GPIO option.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Andre Heider <a.heider@gmail.com>
This change ensures that PCIe card is put into reset state when U-Boot
stops using it.
DM_FLAG_OS_PREPARE ensures that U-Boot executes driver's remove callback
prior booting Linux kernel.
Linux kernel pci-aardvark driver needs to reset PCIe card via PERST# signal
prior initializing it. If it does not issue reset then some PCIe cards
(specially Compex WiFi cards) are not detected at all.
Putting PCIe card into reset state prior booting Linux kernel would ensure
that card would be properly reset at time when Linux kernel starts
initializing pci-aardvark driver.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Konstantin Porotchkin <kostap@marvell.com>
Tested-by: Andre Heider <a.heider@gmail.com>
Change active-high to active-low and change DT property name from
reset-gpio to reset-gpios. This format of gpio reset is used by
pci-aardvark driver in Linux kernel.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Konstantin Porotchkin <kostap@marvell.com>
Tested-by: Andre Heider <a.heider@gmail.com>
There is missing dependency for PCIE_ROCKCHIP which selects
PHY_ROCKCHIP_PCIE which directly depends on ARCH_ROCKCHIP.
WARNING: unmet direct dependencies detected for PHY_ROCKCHIP_PCIE
Depends on [n]: ARCH_ROCKCHIP [=n]
Selected by [y]:
- PCIE_ROCKCHIP [=y] && PCI [=y]
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Since commit 86cf1c8285 ("configs: Migrate CONFIG_NR_DRAM_BANKS") &
commit 999a772d9f ("Kconfig: Migrate CONFIG_NR_DRAM_BANKS"),
CONFIG_NR_DRAM_BANKS is always defined with a value (4 is default).
It makes no sense to still carry code that is guarded with
"#ifndef CONFIG_NR_DRAM_BANKS" (and similar). This patch removes
all these unreferenced code paths.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Adds support for PCI ECAM/PEM controllers found on OcteonTX
or OcteonTX2 SoC platforms.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Add check if the referenced ofnode is valid.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
If ARI capability is found on device, use it to update next function
number in bus scan and also helps to skip unnecessary bdf scans.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Makes dm_pci_map_bar API available to map BAR for Virtual function
PCI devices which support Enhanced Allocation.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
SR-IOV - Single Root I/O Virtualization
PF - Physical Function VF - Virtual Function
If SR-IOV capability is present, use it to initialize Virtual Function
PCI device instances. pci_sriov_init function will read SR-IOV
registers to create VF devices under the PF PCI device and also bind
driver if available. This function needs to be invoked from Physical
function device driver which expects VF device support, creating
minimal impact on existing framework.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
If Enhanced Allocation capability is present in bridges, use it
to read the fixed sub-ordinate bus number.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Enable PCI memory regions in ranges property to be of multiple entry.
This helps to add support for SoC's like OcteonTX/TX2 where every
peripheral is on PCI bus.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Parse subnode DT properties only if parent node is valid.
Otherwise, assert is triggered on ofnode_valid in ofnode_first_subnode
from dev_for_each_subnode.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Fix argument ordering for map_physmem() called in dm_pci_map_ea_bar().
Additinally minor spelling correction.
Signed-off-by: Suneel Garapati <sgarapati@marvell.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Instead of using a fixed length pre-allocated array of regions, this
patch moves to dynamically allocating the regions based on the number
of available regions plus the necessary regions for DRAM banks.
Since MAX_PCI_REGIONS is not needed any more, its removed completely
with this patch.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Marek Vasut <marek.vasut+renesas@gmail.com>
Since the migration to Kconfig, CONFIG_NR_DRAM_BANKS is configured for
all boards. Hence we can remove the conditional compilation and the code
path that will never get compiled.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
This patch adds PCIe support for the Mediatek MT7622 SOC.
Signed-off-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
Signed-off-by: Henry Yen <henry.yen@mediatek.com>
Add Root Complex and Endpoint mode specific config entries, such that
it's feasible to enable the RC and/or EP mode driver indepently.
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Add the PCIe EP mode support for lx2160a-v2 platform.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Modify the ls_pcie_dump_atu function, make it can print the INBOUND
windows registers.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Add the INBOUND configuration for VFs of PF.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Due to the ls2085a and ls2080a use different way to set the BAR size,
so add the BAR size init code here.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
The VF_BARn_REG register's Prefetchable and Type bit fields
are overwritten by a write to VF's BAR Mask register.
workaround: Before writing to the VF_BARn_MASK_REG register,
write 0b to the PCIE_MISC_CONTROL_1_OFF register.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
Add the multiple function support for Layerscape platform, some PEXs
of Layerscaple platform have more than one PF.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Split the RC and EP driver, and reimplement the EP driver base on
the EP framework.
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Drop the legacy PHY driver and it's associated code since
the PHY handling driver now part of Generic PHY framework.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Now, we have a PCIe PHY driver as part of the Generic
PHY framework. Let's use it instead of legacy PHY driver.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The Linux coding style guide (Documentation/process/coding-style.rst)
clearly says:
It's a **mistake** to use typedef for structures and pointers.
Besides, using typedef for structures is annoying when you try to make
headers self-contained.
Let's say you have the following function declaration in a header:
void foo(bd_t *bd);
This is not self-contained since bd_t is not defined.
To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h>
#include <asm/u-boot.h>
void foo(bd_t *bd);
Then, the include direcective pulls in more bloat needlessly.
If you use 'struct bd_info' instead, it is enough to put a forward
declaration as follows:
struct bd_info;
void foo(struct bd_info *bd);
Right, typedef'ing bd_t is a mistake.
I used coccinelle to generate this commit.
The semantic patch that makes this change is as follows:
<smpl>
@@
typedef bd_t;
@@
-bd_t
+struct bd_info
</smpl>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This patch adds basic driver PCI Express controller found on Broadcom
set-top-box SoCs, e.g. BCM2711.
The code is based on Linux upstream driver (pcie-brcmstb.c) with MSI
handling removed. The inbound access memory region is not currently
parsed from dma-ranges DT property and a fixed 3GB region is used.
The patch has been tested on RPI4 board, i.e. on BCM2711 SoC with VL805
USB Host Controller.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Some PCI Express register offsets are currently defined in multiple
drivers, move them to a common header to avoid re-definitions and
as a pre-requisite for adding new PCIe driver.
While at it replace some spaces with tabs.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
When using a copy framebuffer we need to tell the video subsystem its
address. U-Boot's normally allocated framebuffer is used as the working
buffer, but nothing is displayed until it is copied to the copy
framebuffer.
For this to work the video driver must request that a framebuffer be
allocated separately from the hardware framebuffer, so add a check for
that.
Also add a log category so that logging appears correctly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Unless we mark the function as 'static inline' it may end up being
non-inlined by the compiled and result in duplicate functions.
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
The vpcie*-supply properties are optional and these are absent on
boards like the ROCKPro64 and Firefly RK3399 where the voltage is
supplied by always-on regulators that are already enabled upon
boot. Make these regulators optional and properly check their
presence before attempting to enable them.
Makes PCIe work on un U-Boot on the boards mentioned above.
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Tested-by: Marcin Juszkiewicz <marcin@juszkiewicz.com.pl>
Yes, it is possible to have a dedicated UCLASS PHY driver
for this Rockchip PCIe PHY but there are some issues on
Generic PHY framework to support the same.
The Generic PHY framework is unable to get the PHY if
the PHY parent is of a different uclass.
Say if we try to get the PCIe PHY then the phy-uclass
will look for PHY in the first instance if it is not
in the root node it will try to probe the parent by
assuming that the actual PHY is inside the parent PHY
of UCLASS_PHY. But, in rk3399 hardware representation
PHY like emmc, usb and pcie are part of syscon which
is completely a different of UCLASS_SYSCON.
Example:
grf: syscon@ff770000 {
compatible = "rockchip,rk3399-grf", "syscon", "simple-mfd";
reg = <0x0 0xff770000 0x0 0x10000>;
#address-cells = <1>;
#size-cells = <1>;
pcie_phy: pcie-phy {
compatible = "rockchip,rk3399-pcie-phy";
clocks = <&cru SCLK_PCIEPHY_REF>;
clock-names = "refclk";
#phy-cells = <1>;
resets = <&cru SRST_PCIEPHY>;
drive-impedance-ohm = <50>;
reset-names = "phy";
status = "disabled";
};
};
Due to this limitation, this patch adds a separate PHY
driver for Rockchip PCIe. This might be removed in future
once Generic PHY supports this limitation.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Suniel Mahesh <sunil@amarulasolutions.com> #roc-rk3399-pc
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
