diff options
| author | Martin Roth <martinroth@google.com> | 2015-12-07 16:50:47 -0700 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2015-12-17 18:08:52 +0100 |
| commit | ffcd9393a41e20883c219a2f47a1510aef82dcd4 (patch) | |
| tree | e23e2e864a03fd7f44b2eda3b1764441754b5c16 /src/soc | |
| parent | 6d2c7226cb86d005236cfc171bcfcf591b355dd6 (diff) | |
soc/intel/fsp_baytrail: Adjust root port INT routing
Adjust the root port INT routing based on Bay Trail spec:
Document Number: 538136, Rev. 3.9
Table 241. Interrupt Generated for INT[A-D] Interrupts
INTA INTB INTC INTD
Root Port 1 INTA# INTB# INTC# INTD#
Root Port 2 INTD# INTA# INTB# INTC#
Root Port 3 INTC# INTD# INTA# INTB#
Root Port 4 INTB# INTC# INTD# INTA#
Change-Id: I22a8c0bc6ad731dfb79385d6e165f1ec0a07507d
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12684
Tested-by: build bot (Jenkins)
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Ben Gardner <gardner.ben@gmail.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/fsp_baytrail/southcluster.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/soc/intel/fsp_baytrail/southcluster.c b/src/soc/intel/fsp_baytrail/southcluster.c index 3ad692fb2a..f493d2b07d 100644 --- a/src/soc/intel/fsp_baytrail/southcluster.c +++ b/src/soc/intel/fsp_baytrail/southcluster.c @@ -208,6 +208,16 @@ static void write_pci_config_irqs(void) if (targ_dev == NULL || new_int_pin < 1) continue; + /* + * Adjust the INT routing for the PCIe root ports + * See 'Interrupt Generated for INT[A-D] Interrupts' + * Table 241 in Document Number: 538136, Rev. 3.9 + */ + if (PCI_SLOT(targ_dev->path.pci.devfn) == PCIE_DEV && + targ_dev != irq_dev) + new_int_pin = ((new_int_pin - 1 + + PCI_FUNC(targ_dev->path.pci.devfn)) % 4) + 1; + /* Get the original INT_PIN for record keeping */ original_int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN); |