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coreboot-kgpe-d16/src/device/device_const.c

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Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
device: Move find_dev_path() to device_const.c Change-Id: I8a27aa7157b5706623272ba9354ed8dff9b8184f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/26446 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2018-05-21 00:52:10 +02:00
#include <console/console.h>
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
#include <device/device.h>
#include <device/path.h>
#include <device/pci.h>
device: Introduce pcidev_on_root() and friends Semantics of dev_find_slot() are ill in the sense that it only works after device enumeration has completed in ramstage. Plan is to declare it as deprecated. Introduce pcidev_on_root() and pcidev_path_on_root() functions to replace cases where this was called with static argument bus == 0. New implementation only walks the root bus of the PCI tree, while old one walked the entire linked list of devices. Introduce pcidev_path_behind() to replace cases where argument bus != 0. The required parent node is typically one of the PCIe root functions that you locate using pcidev_on_root() above. New forms are safe to use with early devicetree and before PCI bus numbers have been assigned. Change-Id: Ie20598d48b4cf6e35e45fc90804bad4728437fc6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/26447 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2018-05-20 09:31:23 +02:00
#include <device/pci_def.h>
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
#include <device/resource.h>
/** Linked list of ALL devices */
lib: provide clearer devicetree semantics The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-04-17 05:05:36 +02:00
DEVTREE_CONST struct device * DEVTREE_CONST all_devices = &dev_root;
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
/**
* Given a PCI bus and a devfn number, find the device structure.
*
device: add commentary to dev_find_slot() dev_find_slot() can sometimes fail to return the desired device object prior to full PCI enumeration. Comment the declaration and implementation accordingly to help the user understand the problem and avoid its usage. Change-Id: I3fe1f24ff015d3e4f272323947f057e4c910186c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35632 Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-09-26 20:05:27 +02:00
* Note that this function can return the incorrect device prior
* to PCI enumeration because the secondary field of the bus object
* is 0. The failing scenario is determined by the order of the
* devices in all_devices singly-linked list as well as the time
* when this function is called (secondary reflecting topology).
*
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
* @param bus The bus number.
* @param devfn A device/function number.
* @return Pointer to the device structure (if found), 0 otherwise.
*/
device/pci: Reduce scope of dev_find_slot() We only keep it around because soc/intel debugging still depends on it. Change-Id: I3ea37c097bbcc3cf5c0574c7d727eae4f5bee307 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34084 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
2019-07-03 06:51:43 +02:00
static DEVTREE_CONST struct device *dev_find_slot(unsigned int bus,
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
unsigned int devfn)
{
lib: provide clearer devicetree semantics The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-04-17 05:05:36 +02:00
DEVTREE_CONST struct device *dev, *result;
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
result = 0;
for (dev = all_devices; dev; dev = dev->next) {
if ((dev->path.type == DEVICE_PATH_PCI) &&
(dev->bus->secondary == bus) &&
(dev->path.pci.devfn == devfn)) {
result = dev;
break;
}
}
return result;
}
device_romstage: Add a way to move to the next device When trying to loop through all the devices in romstage, there was no function to just go from one to the next. This allows an easy way to go all the way down the chain of devices. Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/5732 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-13 01:38:59 +02:00
/**
device: Move dev_find_path() to device_const.c Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-15 14:13:32 +02:00
* Given a Device Path Type, find the device structure.
device_romstage: Add a way to move to the next device When trying to loop through all the devices in romstage, there was no function to just go from one to the next. This allows an easy way to go all the way down the chain of devices. Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/5732 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-13 01:38:59 +02:00
*
device: Move dev_find_path() to device_const.c Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-15 14:13:32 +02:00
* @param prev_match The previously matched device instance.
* @param path_type The Device Path Type.
* @return Pointer to the device structure (if found), 0 otherwise.
device_romstage: Add a way to move to the next device When trying to loop through all the devices in romstage, there was no function to just go from one to the next. This allows an easy way to go all the way down the chain of devices. Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/5732 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-13 01:38:59 +02:00
*/
device: Move dev_find_path() to device_const.c Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-15 14:13:32 +02:00
DEVTREE_CONST struct device *dev_find_path(
DEVTREE_CONST struct device *prev_match,
enum device_path_type path_type)
device_romstage: Add a way to move to the next device When trying to loop through all the devices in romstage, there was no function to just go from one to the next. This allows an easy way to go all the way down the chain of devices. Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/5732 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-13 01:38:59 +02:00
{
device: Move dev_find_path() to device_const.c Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-15 14:13:32 +02:00
DEVTREE_CONST struct device *dev, *result = NULL;
device_romstage: Add a way to move to the next device When trying to loop through all the devices in romstage, there was no function to just go from one to the next. This allows an easy way to go all the way down the chain of devices. Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/5732 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-13 01:38:59 +02:00
device: Move dev_find_path() to device_const.c Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-15 14:13:32 +02:00
if (prev_match == NULL)
prev_match = all_devices;
else
prev_match = prev_match->next;
device_romstage: Add a way to move to the next device When trying to loop through all the devices in romstage, there was no function to just go from one to the next. This allows an easy way to go all the way down the chain of devices. Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/5732 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-13 01:38:59 +02:00
device: Move dev_find_path() to device_const.c Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-15 14:13:32 +02:00
for (dev = prev_match; dev; dev = dev->next) {
if (dev->path.type == path_type) {
device_romstage: Add a way to move to the next device When trying to loop through all the devices in romstage, there was no function to just go from one to the next. This allows an easy way to go all the way down the chain of devices. Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/5732 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-13 01:38:59 +02:00
result = dev;
break;
}
}
return result;
}
device: Move dev_find_path() to device_const.c Make it available early and use it in dev_find_next_pci_device(). Change-Id: I1d0ad07f37ea79dae2b9a592fcccba5e03fd86d5 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/26294 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2018-05-15 14:13:32 +02:00
/**
* Given a device pointer, find the next PCI device.
*
* @param previous_dev A pointer to a PCI device structure.
* @return Pointer to the next device structure (if found), 0 otherwise.
*/
DEVTREE_CONST struct device *dev_find_next_pci_device(
DEVTREE_CONST struct device *previous_dev)
{
return dev_find_path(previous_dev, DEVICE_PATH_PCI);
}
device: Move find_dev_path() to device_const.c Change-Id: I8a27aa7157b5706623272ba9354ed8dff9b8184f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/26446 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2018-05-21 00:52:10 +02:00
static int path_eq(const struct device_path *path1,
const struct device_path *path2)
{
int equal = 0;
if (path1->type != path2->type)
return 0;
switch (path1->type) {
case DEVICE_PATH_NONE:
break;
case DEVICE_PATH_ROOT:
equal = 1;
break;
case DEVICE_PATH_PCI:
equal = (path1->pci.devfn == path2->pci.devfn);
break;
case DEVICE_PATH_PNP:
equal = (path1->pnp.port == path2->pnp.port) &&
(path1->pnp.device == path2->pnp.device);
break;
case DEVICE_PATH_I2C:
equal = (path1->i2c.device == path2->i2c.device) &&
(path1->i2c.mode_10bit == path2->i2c.mode_10bit);
break;
case DEVICE_PATH_APIC:
equal = (path1->apic.apic_id == path2->apic.apic_id);
break;
case DEVICE_PATH_DOMAIN:
equal = (path1->domain.domain == path2->domain.domain);
break;
case DEVICE_PATH_CPU_CLUSTER:
equal = (path1->cpu_cluster.cluster
== path2->cpu_cluster.cluster);
break;
case DEVICE_PATH_CPU:
equal = (path1->cpu.id == path2->cpu.id);
break;
case DEVICE_PATH_CPU_BUS:
equal = (path1->cpu_bus.id == path2->cpu_bus.id);
break;
case DEVICE_PATH_GENERIC:
equal = (path1->generic.id == path2->generic.id) &&
(path1->generic.subid == path2->generic.subid);
break;
case DEVICE_PATH_SPI:
equal = (path1->spi.cs == path2->spi.cs);
break;
case DEVICE_PATH_USB:
equal = (path1->usb.port_type == path2->usb.port_type) &&
(path1->usb.port_id == path2->usb.port_id);
break;
case DEVICE_PATH_MMIO:
equal = (path1->mmio.addr == path2->mmio.addr);
break;
default:
printk(BIOS_ERR, "Unknown device type: %d\n", path1->type);
break;
}
return equal;
}
/**
* See if a device structure exists for path.
*
* @param parent The bus to find the device on.
* @param path The relative path from the bus to the appropriate device.
* @return Pointer to a device structure for the device on bus at path
* or 0/NULL if no device is found.
*/
DEVTREE_CONST struct device *find_dev_path(
const struct bus *parent, const struct device_path *path)
{
DEVTREE_CONST struct device *child;
for (child = parent->children; child; child = child->sibling) {
if (path_eq(path, &child->path))
break;
}
return child;
}
device: Introduce pcidev_on_root() and friends Semantics of dev_find_slot() are ill in the sense that it only works after device enumeration has completed in ramstage. Plan is to declare it as deprecated. Introduce pcidev_on_root() and pcidev_path_on_root() functions to replace cases where this was called with static argument bus == 0. New implementation only walks the root bus of the PCI tree, while old one walked the entire linked list of devices. Introduce pcidev_path_behind() to replace cases where argument bus != 0. The required parent node is typically one of the PCIe root functions that you locate using pcidev_on_root() above. New forms are safe to use with early devicetree and before PCI bus numbers have been assigned. Change-Id: Ie20598d48b4cf6e35e45fc90804bad4728437fc6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/26447 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2018-05-20 09:31:23 +02:00
DEVTREE_CONST struct device *pcidev_path_behind(
const struct bus *parent, pci_devfn_t devfn)
{
const struct device_path path = {
.type = DEVICE_PATH_PCI,
.pci.devfn = devfn,
};
return find_dev_path(parent, &path);
}
device/pci: Declare pcidev_path_on_bus() It is recommended to never reference PCI busses using a static number. There is exception with OPROM execution, where we want to translate the bus number captured from the actual IO operation into a matching device node in the devicetree. Change-Id: I733c645ac5581c000b4cd6cdc05829cd039324d5 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34077 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-07-04 06:16:59 +02:00
DEVTREE_CONST struct device *pcidev_path_on_bus(unsigned int bus, pci_devfn_t devfn)
{
DEVTREE_CONST struct bus *parent = pci_root_bus();
DEVTREE_CONST struct device *dev = parent->children;
/* FIXME: Write the loop with topology links. */
while (dev) {
if (dev->path.type != DEVICE_PATH_PCI) {
dev = dev->next;
continue;
}
if (dev->bus->secondary == bus)
return pcidev_path_behind(dev->bus, devfn);
dev = dev->next;
}
return NULL;
}
device/pci: Declare pci_root_bus() This is used a lot, cache the result so search of domain from devicetree is only done once. Improvement only applies when MAYBE_STATIC evaluates to static. Change-Id: If675abb632fe68acd59ba0bdfef854da3e0839a9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34004 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2019-07-03 08:55:01 +02:00
DEVTREE_CONST struct bus *pci_root_bus(void)
device: Introduce pcidev_on_root() and friends Semantics of dev_find_slot() are ill in the sense that it only works after device enumeration has completed in ramstage. Plan is to declare it as deprecated. Introduce pcidev_on_root() and pcidev_path_on_root() functions to replace cases where this was called with static argument bus == 0. New implementation only walks the root bus of the PCI tree, while old one walked the entire linked list of devices. Introduce pcidev_path_behind() to replace cases where argument bus != 0. The required parent node is typically one of the PCIe root functions that you locate using pcidev_on_root() above. New forms are safe to use with early devicetree and before PCI bus numbers have been assigned. Change-Id: Ie20598d48b4cf6e35e45fc90804bad4728437fc6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/26447 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2018-05-20 09:31:23 +02:00
{
DEVTREE_CONST struct device *pci_domain;
Split MAYBE_STATIC to _BSS and _NONZERO variants These are required to cover the absensce of .data and .bss sections in some programs, most notably ARCH_X86 in execute-in-place with cache-as-ram. Change-Id: I80485ebac94b88c5864a949b17ad1dccdfda6a40 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35003 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2019-08-20 05:01:57 +02:00
MAYBE_STATIC_BSS DEVTREE_CONST struct bus *pci_root = NULL;
device/pci: Declare pci_root_bus() This is used a lot, cache the result so search of domain from devicetree is only done once. Improvement only applies when MAYBE_STATIC evaluates to static. Change-Id: If675abb632fe68acd59ba0bdfef854da3e0839a9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34004 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2019-07-03 08:55:01 +02:00
if (pci_root)
return pci_root;
pci_domain = dev_find_path(NULL, DEVICE_PATH_DOMAIN);
if (!pci_domain)
return NULL;
pci_root = pci_domain->link_list;
return pci_root;
}
device: Introduce pcidev_on_root() and friends Semantics of dev_find_slot() are ill in the sense that it only works after device enumeration has completed in ramstage. Plan is to declare it as deprecated. Introduce pcidev_on_root() and pcidev_path_on_root() functions to replace cases where this was called with static argument bus == 0. New implementation only walks the root bus of the PCI tree, while old one walked the entire linked list of devices. Introduce pcidev_path_behind() to replace cases where argument bus != 0. The required parent node is typically one of the PCIe root functions that you locate using pcidev_on_root() above. New forms are safe to use with early devicetree and before PCI bus numbers have been assigned. Change-Id: Ie20598d48b4cf6e35e45fc90804bad4728437fc6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/26447 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2018-05-20 09:31:23 +02:00
device/pci: Declare pci_root_bus() This is used a lot, cache the result so search of domain from devicetree is only done once. Improvement only applies when MAYBE_STATIC evaluates to static. Change-Id: If675abb632fe68acd59ba0bdfef854da3e0839a9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34004 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2019-07-03 08:55:01 +02:00
DEVTREE_CONST struct device *pcidev_path_on_root(pci_devfn_t devfn)
{
return pcidev_path_behind(pci_root_bus(), devfn);
device: Introduce pcidev_on_root() and friends Semantics of dev_find_slot() are ill in the sense that it only works after device enumeration has completed in ramstage. Plan is to declare it as deprecated. Introduce pcidev_on_root() and pcidev_path_on_root() functions to replace cases where this was called with static argument bus == 0. New implementation only walks the root bus of the PCI tree, while old one walked the entire linked list of devices. Introduce pcidev_path_behind() to replace cases where argument bus != 0. The required parent node is typically one of the PCIe root functions that you locate using pcidev_on_root() above. New forms are safe to use with early devicetree and before PCI bus numbers have been assigned. Change-Id: Ie20598d48b4cf6e35e45fc90804bad4728437fc6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/26447 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
2018-05-20 09:31:23 +02:00
}
DEVTREE_CONST struct device *pcidev_on_root(uint8_t dev, uint8_t fn)
{
return pcidev_path_on_root(PCI_DEVFN(dev, fn));
}
soc/intel: Fix regression with hidden PCI devices Fix regression with commit 903b40a soc/intel: Replace uses of dev_find_slot() Platforms where FSP hides PCI devices before enumeration may halt with error message 'PCI: dev is NULL!'. The workaround here is to print an error message revealing the faulty source code function and revert to old behaviour of dev_find_slot(). Change-Id: I5eab3e7f1993b686103eaa257aacda379dc259fa Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34285 Reviewed-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Christian Walter <christian.walter@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-07-12 14:26:29 +02:00
DEVTREE_CONST struct device *pcidev_path_on_root_debug(pci_devfn_t devfn, const char *func)
{
DEVTREE_CONST struct device *dev = pcidev_path_on_root(devfn);
if (dev)
return dev;
devicetree: Add accessors for chip_info Apply uniform style of error messages for missing device nodes and chip_info. Change-Id: I70def4599509b8193e44ea3f02c4906f865b4469 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34298 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2019-07-12 15:20:14 +02:00
devtree_bug(func, devfn);
soc/intel: Fix regression with hidden PCI devices Fix regression with commit 903b40a soc/intel: Replace uses of dev_find_slot() Platforms where FSP hides PCI devices before enumeration may halt with error message 'PCI: dev is NULL!'. The workaround here is to print an error message revealing the faulty source code function and revert to old behaviour of dev_find_slot(). Change-Id: I5eab3e7f1993b686103eaa257aacda379dc259fa Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34285 Reviewed-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Christian Walter <christian.walter@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-07-12 14:26:29 +02:00
/* FIXME: This can return wrong device. */
return dev_find_slot(0, devfn);
}
devicetree: Add accessors for chip_info Apply uniform style of error messages for missing device nodes and chip_info. Change-Id: I70def4599509b8193e44ea3f02c4906f865b4469 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34298 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2019-07-12 15:20:14 +02:00
void devtree_bug(const char *func, pci_devfn_t devfn)
{
printk(BIOS_ERR, "BUG: %s requests hidden 00:%02x.%u\n", func, devfn >> 3, devfn & 7);
}
void __noreturn devtree_die(void)
{
die("DEVTREE: dev or chip_info is NULL\n");
}
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
/**
* Given an SMBus bus and a device number, find the device structure.
*
* @param bus The bus number.
* @param addr A device number.
* @return Pointer to the device structure (if found), 0 otherwise.
*/
lib: provide clearer devicetree semantics The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-04-17 05:05:36 +02:00
DEVTREE_CONST struct device *dev_find_slot_on_smbus(unsigned int bus,
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
unsigned int addr)
{
lib: provide clearer devicetree semantics The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-04-17 05:05:36 +02:00
DEVTREE_CONST struct device *dev, *result;
Make the device tree available in the rom stage We thought about two ways to do this change. The way we decided to try was to 1. drop all ops from devices in romstage 2. constify all devices in romstage (make them read-only) so we can compile static.c into romstage 3. the device tree "devices" can be used to read configuration from the device tree (and nothing else, really) 4. the device tree devices are accessed through struct device * in romstage only. device_t stays the typedef to int in romstage 5. Use the same static.c file in ramstage and romstage We declare structs as follows: ROMSTAGE_CONST struct bus dev_root_links[]; ROMSTAGE_CONST is const in romstage and empty in ramstage; This forces all of the device tree into the text area. So a struct looks like this: static ROMSTAGE_CONST struct device _dev21 = { #ifndef __PRE_RAM__ .ops = 0, #endif .bus = &_dev7_links[0], .path = {.type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x1c,3)}}}, .enabled = 0, .on_mainboard = 1, .subsystem_vendor = 0x1ae0, .subsystem_device = 0xc000, .link_list = NULL, .sibling = &_dev22, #ifndef __PRE_RAM__ .chip_ops = &southbridge_intel_bd82x6x_ops, #endif .chip_info = &southbridge_intel_bd82x6x_info_10, .next=&_dev22 }; Change-Id: I722454d8d3c40baf7df989f5a6891f6ba7db5727 Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1398 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-08-01 01:47:25 +02:00
result = 0;
for (dev = all_devices; dev; dev = dev->next) {
if ((dev->path.type == DEVICE_PATH_I2C) &&
(dev->bus->secondary == bus) &&
(dev->path.i2c.device == addr)) {
result = dev;
break;
}
}
return result;
}
devicetree: Search PnP device node from the tree by path Copied from device_util.c with added ROMSTAGE_CONST. Change-Id: If872631ed96a79b9a0b15e09382d6f81098c8db3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8297 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2015-01-28 21:03:46 +01:00
/**
* Given a PnP port and a device number, find the device structure.
*
* @param port The I/O port.
* @param device Logical device number.
* @return Pointer to the device structure (if found), 0 otherwise.
*/
lib: provide clearer devicetree semantics The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-04-17 05:05:36 +02:00
DEVTREE_CONST struct device *dev_find_slot_pnp(u16 port, u16 device)
devicetree: Search PnP device node from the tree by path Copied from device_util.c with added ROMSTAGE_CONST. Change-Id: If872631ed96a79b9a0b15e09382d6f81098c8db3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8297 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2015-01-28 21:03:46 +01:00
{
lib: provide clearer devicetree semantics The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2017-04-17 05:05:36 +02:00
DEVTREE_CONST struct device *dev;
devicetree: Search PnP device node from the tree by path Copied from device_util.c with added ROMSTAGE_CONST. Change-Id: If872631ed96a79b9a0b15e09382d6f81098c8db3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8297 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2015-01-28 21:03:46 +01:00
for (dev = all_devices; dev; dev = dev->next) {
if ((dev->path.type == DEVICE_PATH_PNP) &&
(dev->path.pnp.port == port) &&
(dev->path.pnp.device == device)) {
return dev;
}
}
return 0;
}
device: add child traversal helper function Add a function, dev_bus_each_child(), which walks through all the children for a given bus of a device. This helper allows one to walk through all the children of a given device's bus. BUG=b:111808427,b:111743717 TEST=built Change-Id: Iedceb0d19c05b7abd5a48f8dc30f85461bef5ec6 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/27636 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Justin TerAvest <teravest@chromium.org>
2018-07-25 16:49:19 +02:00
/**
* Given a device and previous match iterate through all the children.
*
* @param bus parent device's bus holding all the children
* @param prev_child previous child already traversed, if NULL start at
* children of parent bus.
* @return pointer to child or NULL when no more children
*/
DEVTREE_CONST struct device *dev_bus_each_child(const struct bus *parent,
DEVTREE_CONST struct device *prev_child)
{
DEVTREE_CONST struct device *dev;
if (parent == NULL)
return NULL;
if (prev_child == NULL)
dev = parent->children;
else
dev = prev_child->sibling;
return dev;
}
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