sky2: workarounds for Yukon-2 supreme
Stephen Hemminger [Thu, 29 Oct 2009 06:37:08 +0000 (06:37 +0000)]
Changes related to support of Yukon supreme chip.
Don't have this chip version to test on,
these are reverse engineered from the vendor (GPL) driver.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/sky2.c

index 70524f2..3387a2f 100644 (file)
@@ -787,8 +787,7 @@ static void sky2_set_tx_stfwd(struct sky2_hw *hw, unsigned port)
 
        if ( (hw->chip_id == CHIP_ID_YUKON_EX &&
              hw->chip_rev != CHIP_REV_YU_EX_A0) ||
-            hw->chip_id == CHIP_ID_YUKON_FE_P ||
-            hw->chip_id == CHIP_ID_YUKON_SUPR) {
+            hw->chip_id >= CHIP_ID_YUKON_FE_P) {
                /* Yukon-Extreme B0 and further Extreme devices */
                /* enable Store & Forward mode for TX */
 
@@ -1404,6 +1403,31 @@ static int sky2_rx_start(struct sky2_port *sky2)
 
        /* Tell chip about available buffers */
        sky2_rx_update(sky2, rxq);
+
+       if (hw->chip_id == CHIP_ID_YUKON_EX ||
+           hw->chip_id == CHIP_ID_YUKON_SUPR) {
+               /*
+                * Disable flushing of non ASF packets;
+                * must be done after initializing the BMUs;
+                * drivers without ASF support should do this too, otherwise
+                * it may happen that they cannot run on ASF devices;
+                * remember that the MAC FIFO isn't reset during initialization.
+                */
+               sky2_write32(hw, SK_REG(sky2->port, RX_GMF_CTRL_T), RX_MACSEC_FLUSH_OFF);
+       }
+
+       if (hw->chip_id >= CHIP_ID_YUKON_SUPR) {
+               /* Enable RX Home Address & Routing Header checksum fix */
+               sky2_write16(hw, SK_REG(sky2->port, RX_GMF_FL_CTRL),
+                            RX_IPV6_SA_MOB_ENA | RX_IPV6_DA_MOB_ENA);
+
+               /* Enable TX Home Address & Routing Header checksum fix */
+               sky2_write32(hw, Q_ADDR(txqaddr[sky2->port], Q_TEST),
+                            TBMU_TEST_HOME_ADD_FIX_EN | TBMU_TEST_ROUTING_ADD_FIX_EN);
+       }
+
+
+
        return 0;
 nomem:
        sky2_rx_clean(sky2);
@@ -2992,6 +3016,12 @@ static void sky2_reset(struct sky2_hw *hw)
                        sky2_write16(hw, SK_REG(i, GMAC_CTRL),
                                     GMC_BYP_MACSECRX_ON | GMC_BYP_MACSECTX_ON
                                     | GMC_BYP_RETR_ON);
+
+       }
+
+       if (hw->chip_id == CHIP_ID_YUKON_SUPR && hw->chip_rev > CHIP_REV_YU_SU_B0) {
+               /* enable MACSec clock gating */
+               sky2_pci_write32(hw, PCI_DEV_REG3, P_CLK_MACSEC_DIS);
        }
 
        /* Clear I2C IRQ noise */