diff options
Diffstat (limited to 'drivers/pci/pci.h')
| -rw-r--r-- | drivers/pci/pci.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 089ed4029a86..cd18205a5d0d 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -22,6 +22,21 @@ */ #define PCIE_PME_TO_L2_TIMEOUT_US 10000 +/* + * PCIe r6.0, sec 6.6.1 <Conventional Reset> + * + * - "With a Downstream Port that does not support Link speeds greater + * than 5.0 GT/s, software must wait a minimum of 100 ms following exit + * from a Conventional Reset before sending a Configuration Request to + * the device immediately below that Port." + * + * - "With a Downstream Port that supports Link speeds greater than + * 5.0 GT/s, software must wait a minimum of 100 ms after Link training + * completes before sending a Configuration Request to the device + * immediately below that Port." + */ +#define PCIE_RESET_CONFIG_DEVICE_WAIT_MS 100 + /* Message Routing (r[2:0]); PCIe r6.0, sec 2.2.8 */ #define PCIE_MSG_TYPE_R_RC 0 #define PCIE_MSG_TYPE_R_ADDR 1 |