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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
This commit is contained in:
Stefan Reinauer 2010-01-17 13:54:08 +00:00 committed by Stefan Reinauer
parent 2e73e19751
commit f6eb88adfb
1 changed files with 10 additions and 2 deletions
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12
src/devices/pciexp_device.c
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@ -34,8 +34,16 @@ static void pciexp_tune_dev(device_t dev)
/* error... */ /* error... */
return; return;
} }
// printk_debug("PCIe: tuning %s\n", dev_path(dev)); #ifdef CONFIG_PCIE_TUNING
/* TODO: Implement PCI Express 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, unsigned int pciexp_scan_bus(struct bus *bus,