e1000e: initialize manageability (IPMI) pass-through in 82574/82583
Bruce Allan [Mon, 10 May 2010 14:59:51 +0000 (14:59 +0000)]
82574/82583 uses different registers/bits to setup manageability filters
than all other parts supported by e1000e; set them accordingly for IPMI
pass-through.  Rename the function to better reflect what it does.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/e1000e/defines.h
drivers/net/e1000e/hw.h
drivers/net/e1000e/netdev.c

index 7f760aa..227147f 100644 (file)
 /* Enable MNG packets to host memory */
 #define E1000_MANC_EN_MNG2HOST   0x00200000
 
+#define E1000_MANC2H_PORT_623    0x00000020 /* Port 0x26f */
+#define E1000_MANC2H_PORT_664    0x00000040 /* Port 0x298 */
+#define E1000_MDEF_PORT_623      0x00000800 /* Port 0x26f */
+#define E1000_MDEF_PORT_664      0x00000400 /* Port 0x298 */
+
 /* Receive Control */
 #define E1000_RCTL_EN             0x00000002    /* enable */
 #define E1000_RCTL_SBP            0x00000004    /* store bad packet */
index 8bdcd5f..6f66c37 100644 (file)
@@ -208,6 +208,8 @@ enum e1e_registers {
 
        E1000_KMRNCTRLSTA = 0x00034, /* MAC-PHY interface - RW */
        E1000_MANC2H    = 0x05860, /* Management Control To Host - RW */
+       E1000_MDEF_BASE = 0x05890, /* Management Decision Filters */
+#define E1000_MDEF(_n)   (E1000_MDEF_BASE + ((_n) * 4))
        E1000_SW_FW_SYNC = 0x05B5C, /* Software-Firmware Synchronization - RW */
        E1000_GCR       = 0x05B00, /* PCI-Ex Control */
        E1000_GCR2      = 0x05B64, /* PCI-Ex Control #2 */
index ab79bec..36473e6 100644 (file)
@@ -2526,10 +2526,10 @@ static void e1000_restore_vlan(struct e1000_adapter *adapter)
        }
 }
 
-static void e1000_init_manageability(struct e1000_adapter *adapter)
+static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
 {
        struct e1000_hw *hw = &adapter->hw;
-       u32 manc, manc2h;
+       u32 manc, manc2h, mdef, i, j;
 
        if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
                return;
@@ -2543,10 +2543,49 @@ static void e1000_init_manageability(struct e1000_adapter *adapter)
         */
        manc |= E1000_MANC_EN_MNG2HOST;
        manc2h = er32(MANC2H);
-#define E1000_MNG2HOST_PORT_623 (1 << 5)
-#define E1000_MNG2HOST_PORT_664 (1 << 6)
-       manc2h |= E1000_MNG2HOST_PORT_623;
-       manc2h |= E1000_MNG2HOST_PORT_664;
+
+       switch (hw->mac.type) {
+       default:
+               manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
+               break;
+       case e1000_82574:
+       case e1000_82583:
+               /*
+                * Check if IPMI pass-through decision filter already exists;
+                * if so, enable it.
+                */
+               for (i = 0, j = 0; i < 8; i++) {
+                       mdef = er32(MDEF(i));
+
+                       /* Ignore filters with anything other than IPMI ports */
+                       if (mdef & !(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
+                               continue;
+
+                       /* Enable this decision filter in MANC2H */
+                       if (mdef)
+                               manc2h |= (1 << i);
+
+                       j |= mdef;
+               }
+
+               if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
+                       break;
+
+               /* Create new decision filter in an empty filter */
+               for (i = 0, j = 0; i < 8; i++)
+                       if (er32(MDEF(i)) == 0) {
+                               ew32(MDEF(i), (E1000_MDEF_PORT_623 |
+                                              E1000_MDEF_PORT_664));
+                               manc2h |= (1 << 1);
+                               j++;
+                               break;
+                       }
+
+               if (!j)
+                       e_warn("Unable to create IPMI pass-through filter\n");
+               break;
+       }
+
        ew32(MANC2H, manc2h);
        ew32(MANC, manc);
 }
@@ -2961,7 +3000,7 @@ static void e1000_configure(struct e1000_adapter *adapter)
        e1000_set_multi(adapter->netdev);
 
        e1000_restore_vlan(adapter);
-       e1000_init_manageability(adapter);
+       e1000_init_manageability_pt(adapter);
 
        e1000_configure_tx(adapter);
        e1000_setup_rctl(adapter);
@@ -5104,7 +5143,7 @@ static int __e1000_resume(struct pci_dev *pdev)
 
        e1000e_reset(adapter);
 
-       e1000_init_manageability(adapter);
+       e1000_init_manageability_pt(adapter);
 
        if (netif_running(netdev))
                e1000e_up(adapter);
@@ -5305,7 +5344,7 @@ static void e1000_io_resume(struct pci_dev *pdev)
        struct net_device *netdev = pci_get_drvdata(pdev);
        struct e1000_adapter *adapter = netdev_priv(netdev);
 
-       e1000_init_manageability(adapter);
+       e1000_init_manageability_pt(adapter);
 
        if (netif_running(netdev)) {
                if (e1000e_up(adapter)) {