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path: root/drivers/pci/pci.c
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2015-08-05pci: Add a constant for an invalid interruptSimon Glass
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 Lian
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>
2015-06-04pci: Move pci_hose_phys_to_bus() to pci_common.cBin Meng
pci_hose_phys_to_bus() is needed by several drivers. Move it to pci_common.c to avoid a broken build when CONFIG_DM_PCI is on. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2015-05-27pci: display header for bus scanTim Harvey
If we are displaying detected PCI devices (CONFIG_PCI_SCAN_SHOW) display a 'PCI:' header prior to scan. Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2015-04-16dm: pci: Move common PCI functions into their own fileSimon Glass
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 Glass
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>
2015-01-16powerpc: 74xx_7xx: remove 74xx_7xx cpu supportMasahiro Yamada
All the 74xx_7xx boards are still non-generic boards: P3G4, ZUMA, ppmc7xx, ELPPC, mpc7448hpc2 Acked-by: Marek Vasut <marex@denx.de> Acked-by: Stefan Roese <sr@denx.de> Acked-by: York Sun <yorksun@freescale.com> Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Nye Liu <nyet@zumanetworks.com> Cc: Roy Zang <tie-fei.zang@freescale.com>
2015-01-12pci: Make pci apis usable before relocationBin Meng
Introduce a gd->hose to save the pci hose in the early phase so that apis in drivers/pci/pci.c can be used before relocation. Architecture codes need assign a valid gd->hose in the early phase. Some variables are declared as static so change them to be either stack variable or global data member so that they can be used before relocation, except the 'indent' used by CONFIG_PCI_SCAN_SHOW which just affects some print format. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
2014-11-25pci: Add functions to read and write a BAR addressSimon Glass
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 Reding
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>
2014-11-23linux/kernel.h: sync min, max, min3, max3 macros with LinuxMasahiro Yamada
U-Boot has never cared about the type when we get max/min of two values, but Linux Kernel does. This commit gets min, max, min3, max3 macros synced with the kernel introducing type checks. Many of references of those macros must be fixed to suppress warnings. We have two options: - Use min, max, min3, max3 only when the arguments have the same type (or add casts to the arguments) - Use min_t/max_t instead with the appropriate type for the first argument Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Pavel Machek <pavel@denx.de> Acked-by: Lukasz Majewski <l.majewski@samsung.com> Tested-by: Lukasz Majewski <l.majewski@samsung.com> [trini: Fixup arch/blackfin/lib/string.c] Signed-off-by: Tom Rini <trini@ti.com>
2014-10-25pci: use __weakJeroen Hofstee
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
2014-09-09pci: add support for board_pci_fixup_dev functionTim Harvey
Some board-level drivers may wish to have per-device fixup functions for PCI devices. Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2014-08-14pci: fix overflow in __pci_hose_bus_to_phys w/ large RAMStephen Warren
If a 32-bit system has 2GB of RAM, and the base address of that RAM is 2GB, then start+size will overflow a 32-bit value (to a value of 0). To avoid such an overflow, convert __pci_hose_bus_to_phys() to calculate the offset of a bus address into a PCI region, rather than comparing a bus address against the end of a PCI region. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-10-16PCIe:change the method to get the address of a requested capability in ↵Zhao Qiang
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>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2012-09-22pci: fix some warnings related to assumptions aboutKumar Gala
The following commit introduced some warnings associated with using pci_addr_t instead of a proper 32-bit data type. commit af778c6d9e2b945ee03cbc53bb976238a3374f33 Author: Andrew Sharp <andywyse6@gmail.com> Date: Wed Aug 1 12:27:16 2012 +0000 pci: fix errant data types and corresponding access functions On some platforms pci_addr_t is defined as a 64-bit data type so its not proper to use with pci_{read,write}_config_dword. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2012-09-02pci: minor cleanup of CONFIG_PCI_PNP usageAndrew Sharp
Refactor the common PCI code just a tiny bit surrounding the PCI_PNP (pciauto) stuff. Makes the code a tiny bit easier to read, and also makes it more obvious that almost no platform needs to setup or use the pci_config_table stuff. Signed-off-by: Andrew Sharp <andywyse6@gmail.com>
2012-09-02pci: clean up some whitespace and formattingAndrew Sharp
I tried to clean up the white space and formatting offenses and inconsistencies in the generic PCI code that obviously has been around for some time. Emphasis on large increases in readability and maintainability and consistency. I omitted the platform/processor specific files in the drivers/pci directory because I wanted to leave those file to those that care more about them. Signed-off-by: Andrew Sharp <andywyse6@gmail.com>
2012-09-02pci: fix errant data types and corresponding access functionsAndrew Sharp
In a couple of places, unsigned int and pci_config_*_dword were being used when u16 and _word should be used. Unsigned int was also being used in a couple of places that should be pci_addr_t. Signed-off-by: Andrew Sharp <andywyse6@gmail.com>
2012-03-04pci: move pciauto_config_init() to pci.hLinus Walleij
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>
2011-10-15pci: move pcidelay code to new location just before PCI bus scanAnatolij Gustschin
PCI cards might need some time after reset to respond. On some boards (mpc5200 or mpc8260 based) the PCI bus reset is deasserted at pci_init_board() time, so we currently can not use available "pcidelay" option for waiting before PCI bus scan since this waiting takes place before calling pci_init_board(). By moving the pcidelay code to the new location using of the "pcidelay" option is possible on mpc5200 or mpc8260 based boards, too. Since pci_hose_scan() could be called multiple times, restrict the function to wait only during its first call and to ignore pcidelay for any further call (as pointed out by Matthias). Signed-off-by: Anatolij Gustschin <agust@denx.de> Cc: Matthias Fuchs <matthias.fuchs@esd.eu> Acked-by: Stefan Roese <sr@denx.de> Acked-by: Matthias Fuchs <matthias.fuchs@esd.eu> Tested-by: Matthias Fuchs <matthias.fuchs@esd.eu>
2011-06-23IXP42x PCI rewriteMichael Schwingen
clean up IXP PCI handling: get rid of IXP-private bus scan, BAR assign etc. code and use u-boot's PCI infrastructure instead. Move board-specific PCI setup code (clock/reset) to board directory. Signed-off-by: Michael Schwingen <michael@schwingen.org>
2011-01-14powerpc/fsl-pci: Determine pci_controller based on cfg addr for dts fixupKumar Gala
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: Use intelligent indentation for CONFIG_PCI_SCAN_SHOWPeter Tyser
When CONFIG_PCI_SCAN_SHOW is defined U-Boot prints out PCI devices as they are found during bootup, eg: PCIE1: connected as Root Complex 01:00.0 - 10b5:8518 - Bridge device 02:01.0 - 10b5:8518 - Bridge device 03:00.0 - 10b5:8112 - Bridge device 04:01.0 - 8086:1010 - Network controller 04:01.1 - 8086:1010 - Network controller 02:02.0 - 10b5:8518 - Bridge device 02:03.0 - 10b5:8518 - Bridge device 06:00.0 - 10b5:8518 - Bridge device 07:00.0 - 10b5:8518 - Bridge device 08:00.0 - 1957:0040 - Processor 07:01.0 - 10b5:8518 - Bridge device 09:00.0 - 10b5:8112 - Bridge device 07:02.0 - 10b5:8518 - Bridge device PCIE1: Bus 00 - 0b PCIE2: connected as Root Complex 0d:00.0 - 1957:0040 - Processor PCIE2: Bus 0c - 0d This information is useful, but its difficult to determine the PCI bus topology. To things clearer, we can use indention to make it more obvious how the PCI bus is organized. For the example above, the updated output with this change is: PCIE1: connected as Root Complex 01:00.0 - 10b5:8518 - Bridge device 02:01.0 - 10b5:8518 - Bridge device 03:00.0 - 10b5:8112 - Bridge device 04:01.0 - 8086:1010 - Network controller 04:01.1 - 8086:1010 - Network controller 02:02.0 - 10b5:8518 - Bridge device 02:03.0 - 10b5:8518 - Bridge device 06:00.0 - 10b5:8518 - Bridge device 07:00.0 - 10b5:8518 - Bridge device 08:00.0 - 1957:0040 - Processor 07:01.0 - 10b5:8518 - Bridge device 09:00.0 - 10b5:8112 - Bridge device 07:02.0 - 10b5:8518 - Bridge device PCIE1: Bus 00 - 0b PCIE2: connected as Root Complex 0d:00.0 - 1957:0040 - Processor PCIE2: Bus 0c - 0d In the examples above, an MPC8640 is connected to a PEX8518 PCIe switch (01:00 and 02:0x), which is connected to another PEX8518 PCIe switch (06:00 and 07:0x), which then connects to a MPC8572 processor (08:00). Also, the MPC8640's PEX8518 PCIe switch is connected to a PCI ethernet card (04:01) via a PEX8112 PCIe-to-PCI bridge (03:00). Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-11-14pci: Fix ordering of devices when CONFIG_PCI_SCAN_SHOWPeter Tyser
Move the printing of PCI device information to before the PCI device is configured. This prevents the case where recursive scanning results in the deepest devices being printed first. This change also makes PCI lockups during enumeration easier to diagnose since the device that is being configured is printed out prior to configuration. Previously, it was not possible to determine which device caused the PCI lockup. Original example: 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 Updated example: PCIE1: connected as Root Complex 01:00.0 - 10b5:8518 - Bridge device 02:01.0 - 10b5:8518 - Bridge device 03:00.0 - 10b5:8112 - Bridge device 04:01.0 - 8086:1010 - Network controller 04:01.1 - 8086:1010 - Network controller 02:02.0 - 10b5:8518 - Bridge device 02:03.0 - 10b5:8518 - Bridge device 06:00.0 - 10b5:8518 - Bridge device 07:00.0 - 10b5:8518 - Bridge device 08:00.0 - 1957:0040 - Processor 07:01.0 - 10b5:8518 - Bridge device 09:00.0 - 10b5:8112 - Bridge device 07:02.0 - 10b5:8518 - Bridge device PCIE1: Bus 00 - 0b Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-11-14pci: Clean up PCI info when CONFIG_PCI_SCAN_SHOWPeter Tyser
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>
2010-10-22pci: Add ability to re-enumerate PCI busesJohn Schmoller
Add a new 'pci enum' command which re-enumerates the PCI buses. This command is enabled via the CONFIG_CMD_PCI_ENUM define and can be useful in boards with FPGAs connected via PCI/PCIe, boards that support PCI hot-plugging, or during PCI debug. Also enable the 'pci enum' command for X-ES's Freescale-based boards. Signed-off-by: John Schmoller <jschmoller@xes-inc.com> Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Acked-by: Kumar Gala <galak@kernel.crashing.org> Acked-by: Wolfgang Denk <wd@denx.de>
2010-03-21Fix PCI_BASE_ADDRESS_5 handling in pci_hose_config_device()Wolfgang Denk
Signed-off-by: FUJITA Kazutoshi <fujita@soum.co.jp> Signed-off-by: <wd@denx.de> Acked-by: Stefan Roese <sr@denx.de>
2009-02-23PCI: Add pci_last_busno() helperAnton Vorontsov
This is just a handy routine that reports last PCI busno: we walk down all the hoses and return last hose's last_busno. Will be used by PCI/PCIe initialization code. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
2009-02-10drivers/pci: Create pci_map_bar functionBecky Bruce
It is no longer always true that the pci bus address can be used as the virtual address for pci accesses. pci_map_bar() is created to return the virtual address for a pci region. Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
2009-02-07pci: give preference to non-PCI_REGION_SYS_MEMORY regions when matchingKumar Gala
When we search for an address match in pci_hose_{phys_to_bus,bus_to_phys} we should give preference to memory regions that aren't system memory. Its possible that we have over mapped system memory in the regions and we want to avoid depending on the order of the regions. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-10-24pci: Allow for PCI addresses to be 64-bitKumar Gala
PCI bus is inherently 64-bit. While not all system require access to the full 64-bit PCI address range some do. This allows those systems to enable the full PCI address width via CONFIG_SYS_PCI_64BIT. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Andrew Fleming-AFLEMING <afleming@freescale.com> Acked-by: Wolfgang Denk <wd@denx.de>
2008-10-18rename CFG_ macros to CONFIG_SYSJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-08-13drivers/pci: Move conditional compilation to MakefileJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
2008-07-10pci: Move PCI device configuration check into a separate weak functionStefan Roese
This patch moves the check, if a device should be skipped in PCI PNP configuration into the function pci_skip_dev(). This function is defined as weak so that it can be overwritten by a platform specific one if needed. The check if the device should get printed in the PCI summary upon bootup (when CONFIG_PCI_SCAN_SHOW is defined) is moved to the function pci_print_dev() which is also defined as weak too. Signed-off-by: Stefan Roese <sr@denx.de>
2008-05-21Big white-space cleanup.Wolfgang Denk
This commit gets rid of a huge amount of silly white-space issues. Especially, all sequences of SPACEs followed by TAB characters get removed (unless they appear in print statements). Also remove all embedded "vim:" and "vi:" statements which hide indentation problems. Signed-off-by: Wolfgang Denk <wd@denx.de>
2008-05-12Revert "pci: Add CONFIG_PCI_SKIP_HOST_BRIDGE config option"Wolfgang Denk
This reverts commit 55774b512fdf63c0516d441cc5da7c54bbffb7f2 which broke many PowerPC boards.
2008-05-10Update pci code to use phys_addr_tBecky Bruce
Physical addrs need to be represented by phys_addr_t, not unsigned long. Otherwise, systems that use CONFIG_PHYS_64BIT are going to fail mightily. Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
2008-03-23pci: Add CONFIG_PCI_SKIP_HOST_BRIDGE config optionNobuhiro Iwamatsu
In current source code, when the device number of PCI is 0, process PCI bridge without fail. However, when the device number is 0, it is not PCI always bridge. There are times when device of PCI allocates. When CONFIG_PCI_SKIP_HOST_BRIDGE is enable, this problem is solved when use this patch. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Acked-by: Stefan Roese <sr@denx.de>
2007-11-24drivers/pci : move pci drivers to drivers/pciJean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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