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path: root/src/include/device/pciexp.h
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2022-08-17pciexp_device: Introduce pciexp_find_ext_vendor_cap()Nico Huber
Vendors can choose to add non-standard capabilities inside a Vendor-Specific Extended Capability. These are identified by the Extended Capability ID 0x0b. Change-Id: Idd6dd0e98bd53b19077afdd4c402114578bec966 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/66454 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2022-08-17pciexp_device: Join pciexp_find_(next_)extended_cap() APIsNico Huber
Move the `offset` parameter into pciexp_find_extended_cap(). If it's called with `0`, we start a new search. If it's an existing offset, we continue the search. This makes it easier to search for multiple occurences of a capa- bility in a single loop. Change-Id: I80115372a82523b90460d97f0fd0fa565c3f56cb Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/66453 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
2022-08-01include: Add SPDX-License-Identifiers to files missing themMartin Roth
This adds SPDX-License-Identifiers to all of the files in src/include that are missing them or have unrecognized identifiers. Files that were written specifically for coreboot and don't have license information are licensed GPL-2.0-only, which is the license for the overall coreboot project. Files that were sourced from Linux are similarly GPL-2.0-only. The cpu/power files were committed with source that was licensed as GPL-2.0-or-later, so presumably that's the license for that entire commit. The final file, vbe.h gives a pointer to the BSD-2-Clause license at opensource.org. Change-Id: I3f8fd7848ce11c1a0060e05903fb17a7583b4725 Signed-off-by: Martin Roth <martin.roth@amd.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/66284 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Felix Singer <felixsinger@posteo.net>
2022-02-10device: Add pciexp_find_next_extended_cap functionTim Wawrzynczak
Some PCIe devices have extended capability lists that contain multiples instances of the same capability. This patch provides a function similar to pciexp_find_extended_cap that can be used to search through multiple instances of the same capability by returning the offset of the next extended capability of the given type following the passed-in offset. The base functionality of searching for a given capability from an offset is extracted to a local helper function and both pciexp_find_extended_cap and pciexp_find_next_extended_cap use this helper. Change-Id: Ie68dc26012ba57650484c4f2ff53cc694a5347aa Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/57784 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
2022-01-24device: constify pciexp_find_extended_cap()Tim Wawrzynczak
The object pointed to by the struct device * argument is not modified, therefore it can be made const. Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: I300d2a59eb0513ddd08d4f1d2a3c6eb829e3f836 Reviewed-on: https://review.coreboot.org/c/coreboot/+/61214 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2021-12-22device: Make pciexp_get_ltr_max_latencies a public functionTim Wawrzynczak
Some device drivers may need to get access to the LTR values for their respective devices, therefore export this function instead of marking it static. BUG=b:204343849 Change-Id: Id372600e8adec0d55d3483726bb9353139685774 Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/60015 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nick Vaccaro <nvaccaro@google.com> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com> Reviewed-by: Subrata Banik <subratabanik@google.com>
2021-11-29device/pci_device.c: Scan only one device for PCIeJianjun Wang
Only scan one device if it's a PCIe downstream port. A PCIe downstream port normally leads to a link with only device 0 on it. As an optimization, scan only for device 0 in that case. Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com> Change-Id: Id184d03b33e1742b18efb3f11aa9b2f81fa03806 Reviewed-on: https://review.coreboot.org/c/coreboot/+/56788 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2021-03-14device/pciexp_device.c: Remove CPP guardingArthur Heymans
Let the linker do its job. This fixes building with !CONFIG_PCIEXP_HOTPLUG on some platforms. Change-Id: I46560722dcb5f1d902709e40b714ef092515b164 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51417 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Nico Huber <nico.h@gmx.de>
2020-02-05pciexp: Add support for allocating PCI express hotplug resourcesJeremy Soller
This change adds support for allocating resources for PCI express hotplug bridges when PCIEXP_HOTPLUG is selected. By default, this will add 32 PCI subordinate numbers (buses), 256 MiB of prefetchable memory, 8 MiB of non-prefetchable memory, and 8 KiB of I/O space to any device with the PCI_EXP_SLTCAP_HPC bit set in the PCI_EXP_SLTCAP register, which indicates hot-plugging capability. The resource allocation is configurable, please see the PCIEXP_HOTPLUG_* variables in src/device/Kconfig. In order to support the allocation of hotplugged PCI buses, a new field is added to struct device called hotplug_buses. This is defaulted to zero, but when set, it adds the hotplug_buses value to the subordinate value of the PCI bridge. This allows devices to be plugged in and unplugged after boot. This code was tested on the System76 Darter Pro (darp6). Before this change, there are not enough resources allocated to the Thunderbolt PCI bridge to allow plugging in new devices after boot. This can be worked around in the Linux kernel by passing a boot param such as: pci=assign-busses,hpbussize=32,realloc This change makes it possible to use Thunderbolt hotplugging without kernel parameters, and attempts to match closely what our motherboard manufacturer's firmware does by default. Signed-off-by: Jeremy Soller <jeremy@system76.com> Change-Id: I500191626584b83e6a8ae38417fd324b5e803afc Reviewed-on: https://review.coreboot.org/c/coreboot/+/35946 Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-03-27device/pciexp_device: Convert LTR non-snoop/snoop value into common macroSubrata Banik
Change-Id: I3d14a40b4ed0dcc216dcac883e33749b7808f00d Signed-off-by: Subrata Banik <subrata.banik@intel.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31951 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Lijian Zhao <lijian.zhao@intel.com>
2018-06-14src: Use of device_t is deprecatedElyes HAOUAS
Change-Id: I9cebfc5c77187bd81094031c43ff6df094908417 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/27010 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2017-12-08device/pciexp_device: Set values numerically instead of as bitmaskPatrick Georgi
As noted on linux-pci, we have a weird way to handling "value" and "scale" fields that are supposed to contain numerical values: we encode them as a bitfield. Instead define the two fields (offset and mask) and use numbers. Another issue, not fixed in this CL, is that we write hard-coded values while these fields really need to contain the max() of acceptable delays of the downstream devices. That way the controller can decide whether or not to enter a deeper power management state. It's noted as a TODO. Change-Id: I895b9fe2ee438d3958c2d787e70a84d73eaa49d2 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Found-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-on: https://review.coreboot.org/22740 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-06-04devicetree: Change scan_bus() prototype in device opsKyösti Mälkki
The input/output value max is no longer used for tracking the bus enumeration sequence, everything is handled in the context of devicetree bus objects. Change-Id: I545088bd8eaf205b1436d8c52d3bc7faf4cfb0f9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8541 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-06-04PCI subsystem: Drop parameter max from scan_busKyösti Mälkki
Change-Id: Ib33d3363c8d42fa54ac07c11a7ab2bc7ee4ae8bf Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8539 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-03-23PCIe: Add L1 Sub-State support.Kenji Chen
Enable L1 Sub-State when both root port and endpoint support it. [pg: keyed the feature to MMCONF_SUPPORT, otherwise boards without that capability fail to build.] Change-Id: Id11fc7c73eb865411747eef63f5f901e00a17f84 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 6ac04ad7e2261846e40da297f7fa317ccebda092 Original-BUG=chrome-os-partner:31424 Original-TEST=Build a image and run on Samus proto boards to check if the settings are applied correctly. I just only have proto boards and need someone having EVT boards to confirm the settings. Original-Signed-off-by: Kenji Chen <kenji.chen@intel.com> Original-Change-Id: Id1b5a52ff0b896f4531c4a6e68e70a2cea8c736a Original-Reviewed-on: https://chromium-review.googlesource.com/221436 Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/8832 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2012-03-29Add support for enabling PCIe Common Clock and ASPMDuncan Laurie
These are guarded by individual Kconfig entries. The deprecated CONFIG_PCIE_TUNING defines have been removed in favor of using specific config options. This is the generic half, there is board-specific pieces still to come that tune before and after ASPM is enabled. Change-Id: I3fe46282eada67629e9eeeed07e487dff54f2729 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: http://review.coreboot.org/735 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2010-10-18Cosmetics and coding style fixes in devices/*.Uwe Hermann
- Whitespace and indentation fixes in various places. - Fix various typos. - Use u8, u16 etc. everywhere. Abuild-tested. Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de> Acked-by: Uwe Hermann <uwe@hermann-uwe.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5962 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2010-04-27Since some people disapprove of white space cleanups mixed in regular commitsStefan Reinauer
while others dislike them being extra commits, let's clean them up once and for all for the existing code. If it's ugly, let it only be ugly once :-) Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5507 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
2005-07-08eric patchYinghai Lu
1. x86_setup_mtrr take address bit. 2. generic ht, pcix, pcie beidge... 3. scan bus and reset_bus 4. ht read ctrl to decide if the ht chain is ready 5. Intel e7520 and e7525 support 6. new ich5r support 7. intel sb 6300 support. yhlu patch 1. split x86_setup_mtrrs to fixed and var 2. if (resource->flags & IORESOURCE_FIXED ) return; in device.c pick_largest_resource 3. in_conherent.c K8_SCAN_PCI_BUS git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1982 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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