udelay(120);
if ((tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS) && tp->pcie_cap) {
+ u16 val16;
+
if (tp->pci_chip_rev_id == CHIPREV_ID_5750_A0) {
int i;
u32 cfg_val;
cfg_val | (1 << 15));
}
- /* Set PCIE max payload size to 128 bytes and
- * clear the "no snoop" and "relaxed ordering" bits.
+ /* Clear the "no snoop" and "relaxed ordering" bits. */
+ pci_read_config_word(tp->pdev,
+ tp->pcie_cap + PCI_EXP_DEVCTL,
+ &val16);
+ val16 &= ~(PCI_EXP_DEVCTL_RELAX_EN |
+ PCI_EXP_DEVCTL_NOSNOOP_EN);
+ /*
+ * Older PCIe devices only support the 128 byte
+ * MPS setting. Enforce the restriction.
*/
+ if (!(tp->tg3_flags & TG3_FLAG_CPMU_PRESENT) ||
+ (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5784))
+ val16 &= ~PCI_EXP_DEVCTL_PAYLOAD;
pci_write_config_word(tp->pdev,
tp->pcie_cap + PCI_EXP_DEVCTL,
- 0);
+ val16);
pcie_set_readrq(tp->pdev, 4096);