diff options
Diffstat (limited to 'lmr/margin_hw.c')
| -rw-r--r-- | lmr/margin_hw.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/lmr/margin_hw.c b/lmr/margin_hw.c index c000132..fc427c8 100644 --- a/lmr/margin_hw.c +++ b/lmr/margin_hw.c @@ -10,6 +10,27 @@ #include "lmr.h" +static u16 special_hw[][4] = + // Vendor ID, Device ID, Revision ID, margin_hw + { { 0x8086, 0x347A, 0x4, MARGIN_ICE_LAKE_RC }, + { 0xFFFF, 0, 0, MARGIN_HW_DEFAULT } + }; + +static enum margin_hw +detect_unique_hw(struct pci_dev *dev) +{ + u16 vendor = pci_read_word(dev, PCI_VENDOR_ID); + u16 device = pci_read_word(dev, PCI_DEVICE_ID); + u8 revision = pci_read_byte(dev, PCI_REVISION_ID); + + for (int i = 0; special_hw[i][0] != 0xFFFF; i++) + { + if (vendor == special_hw[i][0] && device == special_hw[i][1] && revision == special_hw[i][2]) + return special_hw[i][3]; + } + return MARGIN_HW_DEFAULT; +} + bool margin_verify_link(struct pci_dev *down_port, struct pci_dev *up_port) { @@ -56,7 +77,8 @@ fill_dev_wrapper(struct pci_dev *dev) .retimers_n = (!!(pci_read_word(dev, cap->addr + PCI_EXP_LNKSTA2) & PCI_EXP_LINKSTA2_RETIMER)) + (!!(pci_read_word(dev, cap->addr + PCI_EXP_LNKSTA2) & PCI_EXP_LINKSTA2_2RETIMERS)), - .link_speed = (pci_read_word(dev, cap->addr + PCI_EXP_LNKSTA) & PCI_EXP_LNKSTA_SPEED) }; + .link_speed = (pci_read_word(dev, cap->addr + PCI_EXP_LNKSTA) & PCI_EXP_LNKSTA_SPEED), + .hw = detect_unique_hw(dev) }; return res; } |