The read-only-write-enable bit is set by default and must be cleared
to prevent overwriting read-only registers. This should be done
immediately after resetting the PCI Express controller.
Reviewed-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Signed-off-by: Tony O'Brien <tony.obrien@alliedtelesis.co.nz>
[York S: Move SYS_FSL_ERRATUM_A007815 to Kconfig]
Reviewed-by: York Sun <york.sun@nxp.com>
Freescale PCIe controllers v3.0 and later need to set bit
CFG_READY to allow all inbound configuration transactions
to be processed normally when in EP mode. However, bit
CFG_READY has been moved from PCIe configuration space to
CCSR PCIe configuration register comparing previous version.
The patch is to set this bit according to PCIe version.
Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Previously, the address of a requested capability is define like that
"#define PCI_DCR 0x78"
But, the addresses of capabilities is different with regard to PCIe revs.
So this method is not flexible.
Now a function to get the address of a requested capability is added and used.
It can get the address dynamically by capability ID.
The step of this function:
1. Read Status register in PCIe configuration space to confirm that
Capabilities List is valid.
2. Find the address of Capabilities Pointer Register.
3. Find the address of requested capability from the first capability.
Signed-off-by: Zhao Qiang <B45475@freescale.com>
T4240 PCIe IP is version 3.0 and has some update comparing previous
QorIQ products.
1. Move Freescale specific register define
to
arch/powerpc/include/asm/fsl_pci.h
and update the register offset define for T4240.
2. add the status/control register define
use status/control register to judge the link status
3. The original code uses 'Programming Interface' field to judge if PCIE is
EP or RC mode, however, T4240 does not support this functionality.
According to PCIE specification, 'Header Type' offset 0x0e is used to
indicate header type, so for PCIE controller, the patch changes code to
use 'Header Type' field to identify if the PCIE is RC or EP mode.
This patch fixes the PCIe card link up issue on T4240QDS.
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
We assumed that only a small set of compatiable strings would be needed
to find the PCIe device tree nodes to be fixed up. However on newer
platforms the simple rules no longer work. We need to allow specifying
the PCIe compatiable string for each individual SoC.
We introduce CONFIG_SYS_FSL_PCIE_COMPAT for this purpose and set it if
the default isn't sufficient.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
A lot of boards set FT_FSL_PCI_SETUP directly in their board code
and don't check to see if CONFIG_PCI is actually defined. This
will cause the board compilation to fail if CONFIG_PCI is not
defined. The p1022ds board is one such example.
Instead of fixing every board this patch wraps FT_FSL_PCI_SETUP
around CONFIG_PCI so we can remove CONFIG_PCI and boards will
still build properly.
Signed-off-by: Matthew McClintock <msm@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
FSL PCIe controller v2.1:
- New MSI inbound window
- Same Inbound windows address as PCIe controller v1.x
Added new pit_t member(pmit) to struct ccsr_pci for MSI inbound window
FSL PCIe controller v2.2 and v2.3:
- Different addresses for PCIe inbound window 3,2,1
- Exposed PCIe inbound window 0
- New PCIe interrupt status register
Added new Interrupt Status register to struct ccsr_pci & updated pit_t array
size to reflect the 4 inbound windows.
To maintain backward compatiblilty, on V2.2 or greater controllers we
start with inbound window 1 and leave inbound 0 with its default value
(which maps to CCSRBAR).
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This change does the following:
- Adds printing of negotiated link width. This information can be
useful when debugging PCIe issues.
- Makes it optional for boards to implement board_serdes_name().
Previously boards that did not implement it would print unsightly
output such as "PCIE1: Connected to <NULL>..."
- Rewords the PCIe boot output to reduce line length and to make it
clear that the "base address XYZ" value refers to the base address of
the internal processor PCIe registers and not a standard PCI BAR
value.
- Changes "PCIE" output to the standard "PCIe"
Before change:
PCIE1: connected to <NULL> as Root Complex (base addr ef008000)
01:00.0 - 10b5:8518 - Bridge device
02:01.0 - 10b5:8518 - Bridge device
02:02.0 - 10b5:8518 - Bridge device
02:03.0 - 10b5:8518 - Bridge device
PCIE1: Bus 00 - 05
PCIE2: connected to <NULL> as Endpoint (base addr ef009000)
PCIE2: Bus 06 - 06
After change:
PCIe1: Root Complex of PEX8518 Switch, x4, regs @ 0xef008000
01:00.0 - 10b5:8518 - Bridge device
02:01.0 - 10b5:8518 - Bridge device
02:02.0 - 10b5:8518 - Bridge device
02:03.0 - 10b5:8518 - Bridge device
PCIe1: Bus 00 - 05
PCIe2: Endpoint of VPX Fabric A, x2, regs @ 0xef009000
PCIe2: Bus 06 - 06
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Since all the PCIe controllers are connected over SERDES on the SoCs we
can utilize is_serdes_configured() to determine if a controller is
enabled. After which we can setup the ATMUs and LAWs for the controller
in a common fashion and allow board code to specify what the controller
is connected to for reporting reasons.
We also provide a per controller (rather than all) for some systems that
may have special requirements.
Finally, we refactor the code used by the P1022DS to utilize the new
generic code.
Based on patch by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Previously we passed in a specifically named struct pci_controller to
determine if we had setup the particular PCI bus. Now we can search for
the struct so we dont have to depend on the name or the struct being
statically allocated.
Introduced new find_hose_by_cfg_addr() to get back a pci_controller struct
back by searching for it means we can do things like dynamically allocate
them or not have to expose the static structures to all users.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Wolfgang Denk <wd@denx.de>
Now that we have serdes support for all 85xx/86xx/Pxxx chips we can
replace the is_fsl_pci_cfg() code with the is_serdes_configured().
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Previously we used an alias the pci node to determine which node to
fixup or delete. Now we use the new fdt_node_offset_by_compat_reg to
find the node to update.
Additionally, we replace the code in each board with a single macro call
that makes assumes uniform naming and reduces duplication in this area.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Add the LAW target (enum law_trgt_if) to the fsl_pci_info structure, so that
we can capture the LAW target for a given PCI or PCIE controller. Also update
the SET_STD_PCI_INFO and SET_STD_PCIE_INFO macros to assign the
LAW_TRGT_IF_PCI[E]_x macro to the LAW target field of the structure.
This will allow future PCI[E] code to configure the LAW target automatically,
rather than requiring each board to it for each PCI controller separately.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.
Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.
Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>
2010-04-21 23:42:38 +02:00
Renamed from arch/ppc/include/asm/fsl_pci.h (Browse further)
