diff options
Diffstat (limited to 'drivers/misc/mei/pci-me.c')
| -rw-r--r-- | drivers/misc/mei/pci-me.c | 30 |
1 files changed, 23 insertions, 7 deletions
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index ddadd08956f4..bf4bb74c39ff 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -100,15 +100,31 @@ static bool mei_me_quirk_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { u32 reg; - if (ent->device == MEI_DEV_ID_PBG_1) { - pci_read_config_dword(pdev, 0x48, ®); - /* make sure that bit 9 is up and bit 10 is down */ - if ((reg & 0x600) == 0x200) { - dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); - return false; - } + /* Cougar Point || Patsburg */ + if (ent->device == MEI_DEV_ID_CPT_1 || + ent->device == MEI_DEV_ID_PBG_1) { + pci_read_config_dword(pdev, PCI_CFG_HFS_2, ®); + /* make sure that bit 9 (NM) is up and bit 10 (DM) is down */ + if ((reg & 0x600) == 0x200) + goto no_mei; } + + /* Lynx Point */ + if (ent->device == MEI_DEV_ID_LPT_H || + ent->device == MEI_DEV_ID_LPT_W || + ent->device == MEI_DEV_ID_LPT_HR) { + /* Read ME FW Status check for SPS Firmware */ + pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); + /* if bits [19:16] = 15, running SPS Firmware */ + if ((reg & 0xf0000) == 0xf0000) + goto no_mei; + } + return true; + +no_mei: + dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); + return false; } /** * mei_probe - Device Initialization Routine |