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path: root/include/pci.h
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2016-03-21pci: make pci_get_hose_head() available to external usersStuart Yoder1-0/+1
Put pci_get_hose_head() prototype in header so it is available to external users, allowing them to find and iterate over all pci controllers. Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2016-03-17pci: Correct a few comments and nitsSimon Glass1-2/+4
Two comments are missing a parameter and there is an extra blank line. Also two of the region access macros are misnamed. Correct these problems. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-03-17pci: Add functions to update PCI configuration registersSimon Glass1-0/+23
It is common to read a config register value, clear and set some bits, then write back the updated value. Add functions to do this in one step, for convenience. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-02-05dm: pci: Add missing forward declarationsBin Meng1-11/+5
When CONFIG_DM_PCI_COMPAT is not on, there is only a forward declaration for pci_write_config32(). Add other missing ones. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2016-01-24dm: pci: Add a function to write a BARSimon Glass1-2/+15
Add a driver-model version of the pci_write_bar32 function so that this is supported in the new API. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Switch to DM API for PCI address mappingSimon Glass1-1/+1
We should use the new address mapping functions unless we are in compatibility mode. Disable the old functions by default. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Add driver model API functions for address mappingSimon Glass1-0/+59
At present the PCI address map functions use the old API. Add new functions for this so that drivers can be converted. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Add a function to read a PCI BARSimon Glass1-0/+9
Add a driver-model function for reading the PCI BAR from a device. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Add a driver-model version of pci_find_class()Simon Glass1-0/+10
Add a function which scans the driver model device information rather than scanning the PCI bus again. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Add a driver-model version of pci_find_device()Simon Glass1-0/+12
Add a function which scans the driver model device information rather than scanning the PCI bus again. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Use driver model PCI API in auto-configSimon Glass1-1/+1
At present we are using legacy functions even in the auto-configuration code used by driver model. Add a new pci_auto.c version which uses the correct API. Create a new pci_internal.h header to hold functions that are used within the PCI subsystem, but are not exported to other drivers. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Add a dm_ prefix to pci_bus_find_bdf()Simon Glass1-2/+2
Most driver model PCI functions have a dm_ prefix. At some point, when the old code is converted to driver model and the old functions are removed, we will drop that prefix. For consistency, we should use the dm_ prefix for all driver model functions. Update pci_bus_find_bdf() accordingly. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-12dm: pci: Add a dm_ prefix to pci_get_bdf()Simon Glass1-2/+2
Most driver model PCI functions have a dm_ prefix. At some point, when the old code is converted to driver model and the old functions are removed, we will drop that prefix. For consistency, we should use the dm_ prefix for all driver model functions. Update pci_get_bdf() accordingly. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-12-01dm: pci: Disable PCI compatibility functions by defaultSimon Glass1-4/+26
We eventually need to drop the compatibility functions for driver model. As a first step, create a configuration option to enable them and hide them when the option is disabled. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-12-01dm: pci: Add a comment about how to find struct pci_controllerSimon Glass1-0/+2
With driver mode, struct pci_controller is stored as uclass-private data. Add a comment to that effect. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-12-01dm: pci: Add a function to find the regions for a PCI busSimon Glass1-0/+12
This function looks up the controller and returns a pointer to each region type. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2015-12-01dm: pci: Add a function to get the controller for a busSimon Glass1-0/+8
A PCI bus may be a bridge device where the controller is the bridge's parent. Add a function to return the controller device, given a PCI device. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2015-12-01dm: pci: Add functions to emulate 8- and 16-bit accessSimon Glass1-0/+31
Provide a few functions to support using 32-bit access to emulate 8- and 16-bit access. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stephen Warren <swarren@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com>
2015-10-23dm: Rename dev_get_parentdata() to dev_get_parent_priv()Simon Glass1-1/+1
The current name is inconsistent with other driver model data access functions. Rename it and fix up all users. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2015-08-26dm: pci: Add a comment to help find pci_hose_read_config_byte, etc.Simon Glass1-0/+1
These functions are defined by macros so do not show up with grep. Add a comment to help. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-14dm: pci: Add a way to iterate through all PCI devicesSimon Glass1-0/+25
These functions allow iteration through all PCI devices including bridges. The children of each PCI bus are returned in turn. This can be useful for configuring, checking or enumerating all the devices. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-14dm: pci: Provide friendly config access functionsSimon Glass1-0/+18
At present there are no PCI functions which allow access to PCI configuration using a struct udevice. This is a sad situation for driver model as it makes use of PCI harder. Add these functions. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-05pci: Add a constant for an invalid interruptSimon Glass1-0/+2
Rather than using 0xff in the code, add a constant. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-03drivers/pci: Add function to find an extended capabilityMinghuan Lian1-0/+41
PCIe extends device's configuration space to 4k and provides extended capability. The patch adds function to find them. The code is ported from Linux PCIe driver. Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: York Sun <yorksun@freescale.com>
2015-07-21dm: pci: Add a function to get the BDF for a deviceSimon Glass1-0/+8
It is useful to be able to find the full PCI address (bus, device and function) for a PCI device. Add a function to provide this. Adjust the existing code to use this. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-07-21dm: pci: Add support for PCI driver matchingSimon Glass1-2/+77
At present all PCI devices must be present in the device tree in order to be used. Many or most PCI devices don't require any configuration other than that which is done automatically by U-Boot. It is inefficent to add a node with nothing but a compatible string in order to get a device working. Add a mechanism whereby PCI drivers can be declared along with the device parameters they support (vendor/device/class). When no suitable driver is found in the device tree the list of such devices is consulted to determine the correct driver. If this also fails, then a generic driver is used as before. The mechanism used is very similar to that provided by Linux and the header file defintions are copied from Linux 4.1. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2015-07-14pci: Configure expansion ROM during auto config processBin Meng1-9/+0
Currently PCI expansion ROM address is assigned by a call to pciauto_setup_rom() outside of the pci auto config process. This does not work when expansion ROM is on a device behind PCI bridge where bridge's memory limit register was already programmed to a value that does not cover the newly assigned expansion ROM address. To fix this, we should configure the ROM address during the auto config process. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Tested-by: Simon Glass <sjg@chromium.org> Acked-by: Simon Glass <sjg@chromium.org>
2015-07-14dm: pci: Use the correct hose when configuring devicesSimon Glass1-0/+10
Only the PCI controller has access to the PCI region information. Make sure to use the controller (rather than any attached bridges) when configuring devices. This corrects a failure to scan and configure devices when driver model is enabled for PCI. Also add a comment to explain the problem. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-16dm: sandbox: pci: Add a PCI emulation uclassSimon Glass1-0/+108
Since sandbox does not have real devices (unless it borrows those from the host) it must use emulations. Provide a uclass which permits PCI operations to be passed through to an emulation device. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-16dm: pci: Add a uclass for PCISimon Glass1-7/+282
Add a uclass for PCI controllers and a generic one for PCI devices. Adjust the 'pci' command and the existing PCI support to work with this new uclass. Keep most of the compatibility code in a separate file so that it can be removed one day. TODO: Add more header file comments to the new parts of pci.h Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-16dm: pci: Move common PCI functions into their own fileSimon Glass1-0/+14
Driver model will share many functions with the existing PCI implementation. Move these into their own file to avoid duplication and confusion. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-02-05pci: Add a function to find a device by classSimon Glass1-2/+1
There is an existing function prototype in the header file but it is not implemented. Implement something similar. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-01-23x86: Access the VGA ROM when neededSimon Glass1-0/+9
Add code to the generic pci_rom file to access the VGA ROM in PCI space when needed. Signed-off-by: Simon Glass <sjg@chromium.org>
2015-01-05powerpc: mpc824x: remove MPC824X cpu supportMasahiro Yamada1-4/+0
All the MPC824X boards are still non-generic boards: A3000, CPC45, CU824, eXalion, MVBLUE, MUSENKI, Sandpoint824x, utx8245 Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Josef Wagner <Wagner@Microsys.de> Cc: Torsten Demke <torsten.demke@fci.com> Cc: Jim Thompson <jim@musenki.com> Cc: Greg Allen <gallen@arlut.utexas.edu>
2014-11-25pci: Add functions to read and write a BAR addressSimon Glass1-0/+23
Some PCI functions cannot be auto-configured. Add a function to set up a fixed BAR which can be used in these situations. Also add a function to read the current address of a BAR. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2014-11-23pci: Honour pci_skip_dev()Thierry Reding1-0/+1
When enumerating devices, honour the pci_skip_dev() function. This can be used by PCI controller drivers to restrict which devices will be probed. This is required by the NVIDIA Tegra PCIe controller driver, which will fail with a data abort exception if an access is attempted to a device number larger than 0 outside of bus 0. pci_skip_dev() is therefore implemented to prevent any such accesses. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Simon Glass <sjg@chromium.org>
2014-09-09pci: add support for board_pci_fixup_dev functionTim Harvey1-0/+7
Some board-level drivers may wish to have per-device fixup functions for PCI devices. Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2013-11-09pci.h: allow inclusion in assembly sourcePaul Burton1-1/+5
This patch simply #ifdef's out the C-specific parts of pci.h when it is included by an assembly file. This will allow the macros it contains to be used from assembly source as will be done in a followup commit adding support for more modern MIPS Malta boards. Signed-off-by: Paul Burton <paul.burton@imgtec.com>
2013-10-16PCIe:change the method to get the address of a requested capability in ↵Zhao Qiang1-0/+10
configuration space. 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>
2013-08-09powerpc/pcie: add PCIe version 3.x supportZang Roy-R619111-7/+0
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>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk1-17/+1
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2013-06-26pci: Convert extern inline functions to static inlineSimon Glass1-2/+2
I am not sure of the meaning of extern inline, but this gives errors when building with function instrumenting enabled. Change these functions to static inline. Signed-off-by: Simon Glass <sjg@chromium.org>
2013-06-07pci: introduce CONFIG_PCI_INDIRECT_BRIDGE optionGabor Juhos1-0/+2
The pci_indirect.c file is always compiled when CONFIG_PCI is defined although the indirect PCI bridge support is not needed by every board. Introduce a new CONFIG_PCI_INDIRECT_BRIDGE config option and only compile indirect PCI bridge support if this options is enabled. Also add the new option into the configuration files of the boards which needs that. Compile tested for powerpc, x86, arm and nds32. MAKEALL results: powerpc: --------------------- SUMMARY ---------------------------- Boards compiled: 641 Boards with warnings but no errors: 2 ( ELPPC MPC8323ERDB ) ---------------------------------------------------------- Note: the warnings for ELPPC and MPC8323ERDB are present even without the actual patch. x86: --------------------- SUMMARY ---------------------------- Boards compiled: 1 ---------------------------------------------------------- arm: --------------------- SUMMARY ---------------------------- Boards compiled: 311 ---------------------------------------------------------- nds32: --------------------- SUMMARY ---------------------------- Boards compiled: 3 ---------------------------------------------------------- Cc: Tom Rini <trini@ti.com> Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com> Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
2012-12-06x86: gpio: Add GPIO driver for Intel ICH6 and later.Bill Richardson1-0/+123
Implement <asm-generic/gpio.h> functions for Intel ICH6 and later. Only GPIOs 0-31 are handled by this code. Signed-off-by: Bill Richardson <wfrichar@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org>
2012-03-30pci: declare pciauto functions in headerLinus Walleij1-1/+5
The FSL PCI driver uses local prototypes for pciauto_[pre|post]scan_setup_bridge(), this does not seem right, so move them to the <pci.h> file. Fixed a small extern declaration too, this is harmless but distracts the view since all other prototypes are explicitly external. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-03-04pci: move pciauto_config_init() to pci.hLinus Walleij1-0/+1
Fixing build regressions for the Integrator I get find that a few boards try to work around the missing declaration of pciauto_config_init() by declaring it in the local scope. This does not make sense when the sibling functions are in <pci.h> so move the function to the header, ridding the build error in the Integrator and getting rid of the local declarations here and there. Reported-by: Wolfgang Denk <wd@denx.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2011-03-29powerpc/85xx: Handle PCIe initialization requires for P1021 class SoCsPrabhakar Kushwaha1-0/+1
The P1011, P1012, P1015, P1016, P1020, P1021, P1024, & P1025 SoCs require that we initialize the SERDES registers if the lanes are configured for PCIe. Additionally these devices PCIe controller do not support ASPM and we have to explicitly disable it. Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2011-02-05mpc83xx: fix pcie configuration space read/writeLeo Liu1-0/+2
This patch fix a problem for the pcie enumeration when the mpc83xx pcie controller is connected with switch or we use both of the two pcie controller. Signed-off-by: Leo Liu <liucai.lfn@gmail.com> fix codingstyle and compiler warning: 'pcie_priv' defined but not used Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2011-01-14powerpc/fsl-pci: Determine pci_controller based on cfg addr for dts fixupKumar Gala1-0/+1
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>
2010-11-14pci: Clean up PCI info when CONFIG_PCI_SCAN_SHOWPeter Tyser1-0/+1
This change does the following: - Removes the printing of the PCI interrupt line value. This is normally set to 0 by U-Boot on bootup and is rarely used during everyday operation. - Prints out the PCI function number of a device. Previously a device with multiple functions would be printed identically 2 times, which is generally confusing. For example, on an Intel 2 port gigabit Ethernet card the following was displayed: ... 04 01 8086 1010 0200 00 04 01 8086 1010 0200 00 ... - Prints a text description of each device's PCI class instead of the raw PCI class code. The textual description makes it much easier to determine what devices are installed on a PCI bus. - Changes the general formatting of the PCI device output. Previous output: PCIE1: connected as Root Complex 04 01 8086 1010 0200 00 04 01 8086 1010 0200 00 03 00 10b5 8112 0604 00 02 01 10b5 8518 0604 00 02 02 10b5 8518 0604 00 08 00 1957 0040 0b20 00 07 00 10b5 8518 0604 00 09 00 10b5 8112 0604 00 07 01 10b5 8518 0604 00 07 02 10b5 8518 0604 00 06 00 10b5 8518 0604 00 02 03 10b5 8518 0604 00 01 00 10b5 8518 0604 00 PCIE1: Bus 00 - 0b PCIE2: connected as Root Complex 0d 00 1957 0040 0b20 00 PCIE2: Bus 0c - 0d Updated output: PCIE1: connected as Root Complex 04:01.0 - 8086:1010 - Network controller 04:01.1 - 8086:1010 - Network controller 03:00.0 - 10b5:8112 - Bridge device 02:01.0 - 10b5:8518 - Bridge device 02:02.0 - 10b5:8518 - Bridge device 08:00.0 - 1957:0040 - Processor 07:00.0 - 10b5:8518 - Bridge device 09:00.0 - 10b5:8112 - Bridge device 07:01.0 - 10b5:8518 - Bridge device 07:02.0 - 10b5:8518 - Bridge device 06:00.0 - 10b5:8518 - Bridge device 02:03.0 - 10b5:8518 - Bridge device 01:00.0 - 10b5:8518 - Bridge device PCIE1: Bus 00 - 0b PCIE2: connected as Root Complex 0d:00.0 - 1957:0040 - Processor PCIE2: Bus 0c - 0d Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
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