device: Add flag to disable PCIe ASPM
For broken devices that spuriously advertise ASPM, make it possible to
decide ASPM activation in the device driver.
Change-Id: I491aa32a3ec954be87a474478609f0f3971d0fdf
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/25617
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/device/pciexp_device.c b/src/device/pciexp_device.c
index b15d9c2..502494d 100644
--- a/src/device/pciexp_device.c
+++ b/src/device/pciexp_device.c
@@ -377,6 +377,9 @@
u16 lnkctl;
u32 devcap;
+ if (endp->disable_pcie_aspm)
+ return;
+
/* Get endpoint device capabilities for acceptable limits */
devcap = pci_read_config32(endp, endp_cap + PCI_EXP_DEVCAP);
diff --git a/src/include/device/device.h b/src/include/device/device.h
index 02a933e..acead58 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -130,6 +130,7 @@
unsigned int enabled : 1; /* set if we should enable the device */
unsigned int initialized : 1; /* 1 if we have initialized the device */
unsigned int on_mainboard : 1;
+ unsigned int disable_pcie_aspm : 1;
struct pci_irq_info pci_irq_info[4];
u8 command;