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| author | Stefan Reinauer <stepan@coresystems.de> | 2010-01-17 13:54:08 +0000 |
|---|---|---|
| committer | Stefan Reinauer <stepan@openbios.org> | 2010-01-17 13:54:08 +0000 |
| commit | f6eb88adfb8535cdd6c71d5adeed6ca8ed78952d (patch) | |
| tree | 1ae0414404187a0713de2dadf9fbc4cb69575496 /src/devices/pciexp_device.c | |
| parent | 2e73e1975149aea1ac78dced3d9e8b0b7f684113 (diff) | |
| download | coreboot-f6eb88adfb8535cdd6c71d5adeed6ca8ed78952d.tar.xz | |
Initial PCIe tuning: Enable Active State Power Management (ASPM)
Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5030 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/devices/pciexp_device.c')
| -rw-r--r-- | src/devices/pciexp_device.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/devices/pciexp_device.c b/src/devices/pciexp_device.c index 461c3b6c7a..ea9c791272 100644 --- a/src/devices/pciexp_device.c +++ b/src/devices/pciexp_device.c @@ -34,8 +34,16 @@ static void pciexp_tune_dev(device_t dev) /* error... */ return; } - // printk_debug("PCIe: tuning %s\n", dev_path(dev)); - /* TODO: Implement PCI Express tuning. */ +#ifdef CONFIG_PCIE_TUNING + printk_debug("PCIe: tuning %s\n", dev_path(dev)); + + // TODO make this depending on ASPM + /* Enable ASPM Role Based Error Reporting */ + u32 reg32; + reg32 = pci_read_config32(dev, cap + PCI_EXP_DEVCAP); + reg32 |= PCI_EXP_DEVCAP_RBER; + pci_write_config32(dev, cap + PCI_EXP_DEVCAP, reg32); +#endif } unsigned int pciexp_scan_bus(struct bus *bus, |