int cfg9346_usage_count;
unsigned supports_gmii:1;
int cfg9346_usage_count;
unsigned supports_gmii:1;
+ unsigned aspm_manageable:1;
dma_addr_t counters_phys_addr;
struct rtl8169_counters *counters;
struct rtl8169_tc_offsets tc_offset;
dma_addr_t counters_phys_addr;
struct rtl8169_counters *counters;
struct rtl8169_tc_offsets tc_offset;
if (tp->mac_version < RTL_GIGA_MAC_VER_32)
return;
if (tp->mac_version < RTL_GIGA_MAC_VER_32)
return;
+ /* Don't enable ASPM in the chip if OS can't control ASPM */
+ if (enable && tp->aspm_manageable) {
/* On these chip versions ASPM can even harm
* bus communication of other PCI devices.
*/
/* On these chip versions ASPM can even harm
* bus communication of other PCI devices.
*/
rtl_rar_set(tp, mac_addr);
}
rtl_rar_set(tp, mac_addr);
}
+/* register is set if system vendor successfully tested ASPM 1.2 */
+static bool rtl_aspm_is_safe(struct rtl8169_private *tp)
+{
+ if (tp->mac_version >= RTL_GIGA_MAC_VER_61 &&
+ r8168_mac_ocp_read(tp, 0xc0b2) & 0xf)
+ return true;
+
+ return false;
+}
+
static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct rtl8169_private *tp;
static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct rtl8169_private *tp;
xid);
tp->mac_version = chipset;
xid);
tp->mac_version = chipset;
+ /* Disable ASPM L1 as that cause random device stop working
+ * problems as well as full system hangs for some PCIe devices users.
+ * Chips from RTL8168h partially have issues with L1.2, but seem
+ * to work fine with L1 and L1.1.
+ */
+ if (rtl_aspm_is_safe(tp))
+ rc = 0;
+ else if (tp->mac_version >= RTL_GIGA_MAC_VER_46)
+ rc = pci_disable_link_state(pdev, PCIE_LINK_STATE_L1_2);
+ else
+ rc = pci_disable_link_state(pdev, PCIE_LINK_STATE_L1);
+ tp->aspm_manageable = !rc;
+
tp->dash_type = rtl_check_dash(tp);
tp->cp_cmd = RTL_R16(tp, CPlusCmd) & CPCMD_MASK;
tp->dash_type = rtl_check_dash(tp);
tp->cp_cmd = RTL_R16(tp, CPlusCmd) & CPCMD_MASK;