From d1a3366d5612e491a05dc0ff6214df8e204e8544 Mon Sep 17 00:00:00 2001 From: Nico Huber Date: Thu, 31 Aug 2017 12:28:15 +0200 Subject: drivers/asmedia: Add ASPM blacklist To be selected by mainboard Kconfig if the board hosts an ASMedia chip that spuriously advertises ASPM features. Change-Id: I05f9789bc14db56d2ac085f4f14047d80c3aefb5 Signed-off-by: Nico Huber Reviewed-on: https://review.coreboot.org/25619 Reviewed-by: Paul Menzel Reviewed-by: Patrick Georgi Tested-by: build bot (Jenkins) --- src/drivers/asmedia/Kconfig | 2 ++ src/drivers/asmedia/Makefile.inc | 16 ++++++++++++++ src/drivers/asmedia/aspm_blacklist.c | 43 ++++++++++++++++++++++++++++++++++++ 3 files changed, 61 insertions(+) create mode 100644 src/drivers/asmedia/Kconfig create mode 100644 src/drivers/asmedia/Makefile.inc create mode 100644 src/drivers/asmedia/aspm_blacklist.c (limited to 'src/drivers') diff --git a/src/drivers/asmedia/Kconfig b/src/drivers/asmedia/Kconfig new file mode 100644 index 0000000000..e0a0ca3db0 --- /dev/null +++ b/src/drivers/asmedia/Kconfig @@ -0,0 +1,2 @@ +config DRIVERS_ASMEDIA_ASPM_BLACKLIST + bool diff --git a/src/drivers/asmedia/Makefile.inc b/src/drivers/asmedia/Makefile.inc new file mode 100644 index 0000000000..daa4e895a1 --- /dev/null +++ b/src/drivers/asmedia/Makefile.inc @@ -0,0 +1,16 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2018 secunet Security Networks AG +## +## 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. +## + +ramstage-$(CONFIG_DRIVERS_ASMEDIA_ASPM_BLACKLIST) += aspm_blacklist.c diff --git a/src/drivers/asmedia/aspm_blacklist.c b/src/drivers/asmedia/aspm_blacklist.c new file mode 100644 index 0000000000..6162416e51 --- /dev/null +++ b/src/drivers/asmedia/aspm_blacklist.c @@ -0,0 +1,43 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 secunet Security Networks AG + * + * 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. + */ + +#include +#include +#include + +static void disable_aspm(struct device *const dev) +{ + printk(BIOS_INFO, "Disabling ASPM for %s [%04x/%04x]\n", + dev_path(dev), dev->vendor, dev->device); + dev->disable_pcie_aspm = 1; +} + +static struct device_operations asmedia_noaspm_ops = { + .read_resources = pci_dev_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .enable = disable_aspm, +}; + +static const unsigned short pci_device_ids[] = { + 0x0611, /* ASM1061 SATA IDE Controller */ + 0 +}; + +static const struct pci_driver asmedia_noaspm __pci_driver = { + .ops = &asmedia_noaspm_ops, + .vendor = 0x1b21, + .devices = pci_device_ids, +}; -- cgit v1.2.3