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path: root/drivers/net/tg3.c
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Diffstat (limited to 'drivers/net/tg3.c')
-rw-r--r--drivers/net/tg3.c44
1 files changed, 41 insertions, 3 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 2624d714d16..226e60dfaea 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -6985,7 +6985,7 @@ static void tg3_restore_pci_state(struct tg3 *tp)
if (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5785) {
if (tp->tg3_flags2 & TG3_FLG2_PCI_EXPRESS)
- pcie_set_readrq(tp->pdev, 4096);
+ pcie_set_readrq(tp->pdev, tp->pcie_readrq);
else {
pci_write_config_byte(tp->pdev, PCI_CACHE_LINE_SIZE,
tp->pci_cacheline_sz);
@@ -7179,7 +7179,7 @@ static int tg3_chip_reset(struct tg3 *tp)
tp->pcie_cap + PCI_EXP_DEVCTL,
val16);
- pcie_set_readrq(tp->pdev, 4096);
+ pcie_set_readrq(tp->pdev, tp->pcie_readrq);
/* Clear error status */
pci_write_config_word(tp->pdev,
@@ -13366,7 +13366,45 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
tp->tg3_flags2 |= TG3_FLG2_PCI_EXPRESS;
- pcie_set_readrq(tp->pdev, 4096);
+ tp->pcie_readrq = 4096;
+ if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5719) {
+ u16 word;
+
+ pci_read_config_word(tp->pdev,
+ tp->pcie_cap + PCI_EXP_LNKSTA,
+ &word);
+ switch (word & PCI_EXP_LNKSTA_CLS) {
+ case PCI_EXP_LNKSTA_CLS_2_5GB:
+ word &= PCI_EXP_LNKSTA_NLW;
+ word >>= PCI_EXP_LNKSTA_NLW_SHIFT;
+ switch (word) {
+ case 2:
+ tp->pcie_readrq = 2048;
+ break;
+ case 4:
+ tp->pcie_readrq = 1024;
+ break;
+ }
+ break;
+
+ case PCI_EXP_LNKSTA_CLS_5_0GB:
+ word &= PCI_EXP_LNKSTA_NLW;
+ word >>= PCI_EXP_LNKSTA_NLW_SHIFT;
+ switch (word) {
+ case 1:
+ tp->pcie_readrq = 2048;
+ break;
+ case 2:
+ tp->pcie_readrq = 1024;
+ break;
+ case 4:
+ tp->pcie_readrq = 512;
+ break;
+ }
+ }
+ }
+
+ pcie_set_readrq(tp->pdev, tp->pcie_readrq);
pci_read_config_word(tp->pdev,
tp->pcie_cap + PCI_EXP_LNKCTL,