ixgbe/base: iosf sideband read/write
[dpdk.git] / lib / librte_pmd_ixgbe / ixgbe / ixgbe_vf.c
index ccc0d46..e6b6c51 100644 (file)
@@ -1,6 +1,6 @@
 /*******************************************************************************
 
-Copyright (c) 2001-2012, Intel Corporation
+Copyright (c) 2001-2014, Intel Corporation
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -35,7 +35,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "ixgbe_api.h"
 #include "ixgbe_type.h"
 #include "ixgbe_vf.h"
-#ident "$Id: ixgbe_vf.c,v 1.58 2012/08/09 20:24:53 cmwyborn Exp $"
+#ident "$Id: ixgbe_vf.c,v 1.62 2013/06/27 21:30:59 jtkirshe Exp $"
 
 #ifndef IXGBE_VFWRITE_REG
 #define IXGBE_VFWRITE_REG IXGBE_WRITE_REG
@@ -89,6 +89,49 @@ s32 ixgbe_init_ops_vf(struct ixgbe_hw *hw)
        return IXGBE_SUCCESS;
 }
 
+/* ixgbe_virt_clr_reg - Set register to default (power on) state.
+ *  @hw: pointer to hardware structure
+ */
+static void ixgbe_virt_clr_reg(struct ixgbe_hw *hw)
+{
+       int i;
+       u32 vfsrrctl;
+       u32 vfdca_rxctrl;
+       u32 vfdca_txctrl;
+
+       /* VRSRRCTL default values (BSIZEPACKET = 2048, BSIZEHEADER = 256) */
+       vfsrrctl = 0x100 << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT;
+       vfsrrctl |= 0x800 >> IXGBE_SRRCTL_BSIZEPKT_SHIFT;
+
+       /* DCA_RXCTRL default value */
+       vfdca_rxctrl = IXGBE_DCA_RXCTRL_DESC_RRO_EN |
+                      IXGBE_DCA_RXCTRL_DATA_WRO_EN |
+                      IXGBE_DCA_RXCTRL_HEAD_WRO_EN;
+
+       /* DCA_TXCTRL default value */
+       vfdca_txctrl = IXGBE_DCA_TXCTRL_DESC_RRO_EN |
+                      IXGBE_DCA_TXCTRL_DESC_WRO_EN |
+                      IXGBE_DCA_TXCTRL_DATA_RRO_EN;
+
+       IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
+
+       for (i = 0; i < 7; i++) {
+               IXGBE_WRITE_REG(hw, IXGBE_VFRDH(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFRDT(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFRXDCTL(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFSRRCTL(i), vfsrrctl);
+               IXGBE_WRITE_REG(hw, IXGBE_VFTDH(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFTDT(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFTXDCTL(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAH(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFTDWBAL(i), 0);
+               IXGBE_WRITE_REG(hw, IXGBE_VFDCA_RXCTRL(i), vfdca_rxctrl);
+               IXGBE_WRITE_REG(hw, IXGBE_VFDCA_TXCTRL(i), vfdca_txctrl);
+       }
+
+       IXGBE_WRITE_FLUSH(hw);
+}
+
 /**
  *  ixgbe_start_hw_vf - Prepare hardware for Tx/Rx
  *  @hw: pointer to hardware structure
@@ -134,7 +177,7 @@ s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
        struct ixgbe_mbx_info *mbx = &hw->mbx;
        u32 timeout = IXGBE_VF_INIT_TIMEOUT;
        s32 ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
-       u32 ctrl, msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
+       u32 msgbuf[IXGBE_VF_PERMADDR_MSG_LEN];
        u8 *addr = (u8 *)(&msgbuf[1]);
 
        DEBUGFUNC("ixgbevf_reset_hw_vf");
@@ -147,8 +190,7 @@ s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
 
        DEBUGOUT("Issuing a function level reset to MAC\n");
 
-       ctrl = IXGBE_VFREAD_REG(hw, IXGBE_VFCTRL) | IXGBE_CTRL_RST;
-       IXGBE_VFWRITE_REG(hw, IXGBE_VFCTRL, ctrl);
+       IXGBE_VFWRITE_REG(hw, IXGBE_VFCTRL, IXGBE_CTRL_RST);
        IXGBE_WRITE_FLUSH(hw);
 
        msec_delay(50);
@@ -159,34 +201,36 @@ s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
                usec_delay(5);
        }
 
-       if (timeout) {
-               /* mailbox timeout can now become active */
-               mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
+       if (!timeout)
+               return IXGBE_ERR_RESET_FAILED;
 
-               msgbuf[0] = IXGBE_VF_RESET;
-               mbx->ops.write_posted(hw, msgbuf, 1, 0);
+       /* Reset VF registers to initial values */
+       ixgbe_virt_clr_reg(hw);
 
-               msec_delay(10);
+       /* mailbox timeout can now become active */
+       mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;
 
-               /*
-                * set our "perm_addr" based on info provided by PF
-                * also set up the mc_filter_type which is piggy backed
-                * on the mac address in word 3
-                */
-               ret_val = mbx->ops.read_posted(hw, msgbuf,
-                                              IXGBE_VF_PERMADDR_MSG_LEN, 0);
-               if (!ret_val) {
-                       if (msgbuf[0] == (IXGBE_VF_RESET |
-                                         IXGBE_VT_MSGTYPE_ACK)) {
-                               memcpy(hw->mac.perm_addr, addr,
-                                      IXGBE_ETH_LENGTH_OF_ADDRESS);
-                               hw->mac.mc_filter_type =
-                                       msgbuf[IXGBE_VF_MC_TYPE_WORD];
-                       } else {
-                               ret_val = IXGBE_ERR_INVALID_MAC_ADDR;
-                       }
-               }
-       }
+       msgbuf[0] = IXGBE_VF_RESET;
+       mbx->ops.write_posted(hw, msgbuf, 1, 0);
+
+       msec_delay(10);
+
+       /*
+        * set our "perm_addr" based on info provided by PF
+        * also set up the mc_filter_type which is piggy backed
+        * on the mac address in word 3
+        */
+       ret_val = mbx->ops.read_posted(hw, msgbuf,
+                       IXGBE_VF_PERMADDR_MSG_LEN, 0);
+       if (ret_val)
+               return ret_val;
+
+       if (msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK) &&
+           msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
+               return IXGBE_ERR_INVALID_MAC_ADDR;
+
+       memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
+       hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
 
        return ret_val;
 }
@@ -227,6 +271,8 @@ s32 ixgbe_stop_adapter_vf(struct ixgbe_hw *hw)
                reg_val &= ~IXGBE_RXDCTL_ENABLE;
                IXGBE_VFWRITE_REG(hw, IXGBE_VFRXDCTL(i), reg_val);
        }
+       /* Clear packet split and pool config */
+       IXGBE_WRITE_REG(hw, IXGBE_VFPSRTYPE, 0);
 
        /* flush all queues disables */
        IXGBE_WRITE_FLUSH(hw);
@@ -247,7 +293,7 @@ s32 ixgbe_stop_adapter_vf(struct ixgbe_hw *hw)
  *  by the MO field of the MCSTCTRL. The MO field is set during initialization
  *  to mc_filter_type.
  **/
-static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
+STATIC s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
 {
        u32 vector = 0;
 
@@ -275,7 +321,7 @@ static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
        return vector;
 }
 
-static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
+STATIC void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
                                        u32 *msg, u16 size)
 {
        struct ixgbe_mbx_info *mbx = &hw->mbx;
@@ -295,12 +341,13 @@ static void ixgbevf_write_msg_read_ack(struct ixgbe_hw *hw,
  *  @enable_addr: set flag that address is active
  **/
 s32 ixgbe_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
-                     u32 enable_addr)
+                    u32 enable_addr)
 {
        struct ixgbe_mbx_info *mbx = &hw->mbx;
        u32 msgbuf[3];
        u8 *msg_addr = (u8 *)(&msgbuf[1]);
        s32 ret_val;
+       UNREFERENCED_3PARAMETER(vmdq, enable_addr, index);
 
        memset(msgbuf, 0, 12);
        msgbuf[0] = IXGBE_VF_SET_MAC_ADDR;
@@ -330,8 +377,8 @@ s32 ixgbe_set_rar_vf(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
  *  Updates the Multicast Table Array.
  **/
 s32 ixgbe_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
-                                 u32 mc_addr_count, ixgbe_mc_addr_itr next,
-                                 bool clear)
+                                u32 mc_addr_count, ixgbe_mc_addr_itr next,
+                                bool clear)
 {
        struct ixgbe_mbx_info *mbx = &hw->mbx;
        u32 msgbuf[IXGBE_VFMAILBOX_SIZE];
@@ -340,6 +387,7 @@ s32 ixgbe_update_mc_addr_list_vf(struct ixgbe_hw *hw, u8 *mc_addr_list,
        u32 cnt, i;
        u32 vmdq;
 
+       UNREFERENCED_1PARAMETER(clear);
 
        DEBUGFUNC("ixgbe_update_mc_addr_list_vf");
 
@@ -379,6 +427,7 @@ s32 ixgbe_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on)
        struct ixgbe_mbx_info *mbx = &hw->mbx;
        u32 msgbuf[2];
        s32 ret_val;
+       UNREFERENCED_1PARAMETER(vind);
 
        msgbuf[0] = IXGBE_VF_SET_VLAN;
        msgbuf[1] = vlan;
@@ -403,6 +452,7 @@ s32 ixgbe_set_vfta_vf(struct ixgbe_hw *hw, u32 vlan, u32 vind, bool vlan_on)
  **/
 u32 ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw *hw)
 {
+       UNREFERENCED_1PARAMETER(hw);
        return IXGBE_VF_MAX_TX_QUEUES;
 }
 
@@ -414,6 +464,7 @@ u32 ixgbe_get_num_of_tx_queues_vf(struct ixgbe_hw *hw)
  **/
 u32 ixgbe_get_num_of_rx_queues_vf(struct ixgbe_hw *hw)
 {
+       UNREFERENCED_1PARAMETER(hw);
        return IXGBE_VF_MAX_RX_QUEUES;
 }
 
@@ -472,10 +523,10 @@ s32 ixgbevf_set_uc_addr_vf(struct ixgbe_hw *hw, u32 index, u8 *addr)
  *
  *  Set the link speed in the AUTOC register and restarts link.
  **/
-s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw,
-                                  ixgbe_link_speed speed, bool autoneg,
-                                  bool autoneg_wait_to_complete)
+s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed speed,
+                           bool autoneg_wait_to_complete)
 {
+       UNREFERENCED_3PARAMETER(hw, speed, autoneg_wait_to_complete);
        return IXGBE_SUCCESS;
 }
 
@@ -489,24 +540,43 @@ s32 ixgbe_setup_mac_link_vf(struct ixgbe_hw *hw,
  *  Reads the links register to determine if link is up and the current speed
  **/
 s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
-                            bool *link_up, bool autoneg_wait_to_complete)
+                           bool *link_up, bool autoneg_wait_to_complete)
 {
+       struct ixgbe_mbx_info *mbx = &hw->mbx;
+       struct ixgbe_mac_info *mac = &hw->mac;
+       s32 ret_val = IXGBE_SUCCESS;
        u32 links_reg;
+       u32 in_msg = 0;
+       UNREFERENCED_1PARAMETER(autoneg_wait_to_complete);
 
-       if (!(hw->mbx.ops.check_for_rst(hw, 0))) {
-               *link_up = false;
-               *speed = 0;
-               return -1;
-       }
+       /* If we were hit with a reset drop the link */
+       if (!mbx->ops.check_for_rst(hw, 0) || !mbx->timeout)
+               mac->get_link_status = true;
+
+       if (!mac->get_link_status)
+               goto out;
 
-       links_reg = IXGBE_VFREAD_REG(hw, IXGBE_VFLINKS);
+       /* if link status is down no point in checking to see if pf is up */
+       links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
+       if (!(links_reg & IXGBE_LINKS_UP))
+               goto out;
+
+       /* for SFP+ modules and DA cables on 82599 it can take up to 500usecs
+        * before the link status is correct
+        */
+       if (mac->type == ixgbe_mac_82599_vf) {
+               int i;
 
-       if (links_reg & IXGBE_LINKS_UP)
-               *link_up = true;
-       else
-               *link_up = false;
+               for (i = 0; i < 5; i++) {
+                       usec_delay(100);
+                       links_reg = IXGBE_READ_REG(hw, IXGBE_VFLINKS);
 
-       switch (links_reg & IXGBE_LINKS_SPEED_10G_82599) {
+                       if (!(links_reg & IXGBE_LINKS_UP))
+                               goto out;
+               }
+       }
+
+       switch (links_reg & IXGBE_LINKS_SPEED_82599) {
        case IXGBE_LINKS_SPEED_10G_82599:
                *speed = IXGBE_LINK_SPEED_10GB_FULL;
                break;
@@ -518,7 +588,33 @@ s32 ixgbe_check_mac_link_vf(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
                break;
        }
 
-       return IXGBE_SUCCESS;
+       /* if the read failed it could just be a mailbox collision, best wait
+        * until we are called again and don't report an error
+        */
+       if (mbx->ops.read(hw, &in_msg, 1, 0))
+               goto out;
+
+       if (!(in_msg & IXGBE_VT_MSGTYPE_CTS)) {
+               /* msg is not CTS and is NACK we must have lost CTS status */
+               if (in_msg & IXGBE_VT_MSGTYPE_NACK)
+                       ret_val = -1;
+               goto out;
+       }
+
+       /* the pf is talking, if we timed out in the past we reinit */
+       if (!mbx->timeout) {
+               ret_val = -1;
+               goto out;
+       }
+
+       /* if we passed all the tests above then the link is up and we no
+        * longer need to check for link
+        */
+       mac->get_link_status = false;
+
+out:
+       *link_up = !mac->get_link_status;
+       return ret_val;
 }
 
 /**