diff options
Diffstat (limited to 'src/soc/intel/common/block/pcie')
| -rw-r--r-- | src/soc/intel/common/block/pcie/pcie.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/pcie/pcie.c b/src/soc/intel/common/block/pcie/pcie.c index 19133f0b55..7d383fdfaa 100644 --- a/src/soc/intel/common/block/pcie/pcie.c +++ b/src/soc/intel/common/block/pcie/pcie.c @@ -24,6 +24,8 @@ #define PCIE_LTR_MAX_NO_SNOOP_LATENCY_VALUE 0x1003 /* Latency tolerance reporting, max snoop latency value 3.14ms */ #define PCIE_LTR_MAX_SNOOP_LATENCY_VALUE 0x1003 +/* PCI-E Sub-System ID */ +#define PCIE_SUBSYSTEM_VENDOR_ID 0x94 static void pch_pcie_init(struct device *dev) { @@ -69,8 +71,16 @@ static void pcie_set_L1_ss_max_latency(device_t dev, unsigned int offset) PCIE_LTR_MAX_SNOOP_LATENCY_VALUE); } +static void pcie_dev_set_subsystem(struct device *dev, + unsigned vendor, unsigned device) +{ + pci_write_config32(dev, PCIE_SUBSYSTEM_VENDOR_ID, + ((device & 0xffff) << 16) | (vendor & 0xffff)); +} + static struct pci_operations pcie_ops = { .set_L1_ss_latency = pcie_set_L1_ss_max_latency, + .set_subsystem = pcie_dev_set_subsystem, }; static struct device_operations device_ops = { |