X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fnet%2Ffm10k%2Fbase%2Ffm10k_vf.c;h=bd449773a1002625f07bcdf0274398bcc7c10afc;hb=a61888c8f297eac7e917850e2a4f66601bb715c1;hp=39bc92705ec65f7e51a007d5a65bb28fa66605e1;hpb=285e9a7beaa3bfe6db27173c6e3a93932f6c1d8d;p=dpdk.git

diff --git a/drivers/net/fm10k/base/fm10k_vf.c b/drivers/net/fm10k/base/fm10k_vf.c
index 39bc92705e..bd449773a1 100644
--- a/drivers/net/fm10k/base/fm10k_vf.c
+++ b/drivers/net/fm10k/base/fm10k_vf.c
@@ -49,11 +49,11 @@ STATIC s32 fm10k_stop_hw_vf(struct fm10k_hw *hw)
 
 	/* we need to disable the queues before taking further steps */
 	err = fm10k_stop_hw_generic(hw);
-	if (err)
+	if (err && err != FM10K_ERR_REQUESTS_PENDING)
 		return err;
 
 	/* If permanent address is set then we need to restore it */
-	if (FM10K_IS_VALID_ETHER_ADDR(perm_addr)) {
+	if (IS_VALID_ETHER_ADDR(perm_addr)) {
 		bal = (((u32)perm_addr[3]) << 24) |
 		      (((u32)perm_addr[4]) << 16) |
 		      (((u32)perm_addr[5]) << 8);
@@ -74,10 +74,15 @@ STATIC s32 fm10k_stop_hw_vf(struct fm10k_hw *hw)
 		FM10K_WRITE_REG(hw, FM10K_TDBAH(i), bah);
 		FM10K_WRITE_REG(hw, FM10K_RDBAL(i), bal);
 		FM10K_WRITE_REG(hw, FM10K_RDBAH(i), bah);
+		/* Restore ITR scale in software-defined mechanism in TDLEN
+		 * for next VF initialization. See definition of
+		 * FM10K_TDLEN_ITR_SCALE_SHIFT for more details on the use of
+		 * TDLEN here.
+		 */
 		FM10K_WRITE_REG(hw, FM10K_TDLEN(i), tdlen);
 	}
 
-	return FM10K_SUCCESS;
+	return err;
 }
 
 /**
@@ -95,7 +100,9 @@ STATIC s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
 
 	/* shut down queues we own and reset DMA configuration */
 	err = fm10k_stop_hw_vf(hw);
-	if (err)
+	if (err == FM10K_ERR_REQUESTS_PENDING)
+		hw->mac.reset_while_pending++;
+	else if (err)
 		return err;
 
 	/* Inititate VF reset */
@@ -108,9 +115,9 @@ STATIC s32 fm10k_reset_hw_vf(struct fm10k_hw *hw)
 	/* Clear reset bit and verify it was cleared */
 	FM10K_WRITE_REG(hw, FM10K_VFCTRL, 0);
 	if (FM10K_READ_REG(hw, FM10K_VFCTRL) & FM10K_VFCTRL_RST)
-		err = FM10K_ERR_RESET_FAILED;
+		return FM10K_ERR_RESET_FAILED;
 
-	return err;
+	return FM10K_SUCCESS;
 }
 
 /**
@@ -128,8 +135,10 @@ STATIC s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
 
 	/* verify we have at least 1 queue */
 	if (!~FM10K_READ_REG(hw, FM10K_TXQCTL(0)) ||
-	    !~FM10K_READ_REG(hw, FM10K_RXQCTL(0)))
-		return FM10K_ERR_NO_RESOURCES;
+	    !~FM10K_READ_REG(hw, FM10K_RXQCTL(0))) {
+		err = FM10K_ERR_NO_RESOURCES;
+		goto reset_max_queues;
+	}
 
 	/* determine how many queues we have */
 	for (i = 1; tqdloc0 && (i < FM10K_MAX_QUEUES_POOL); i++) {
@@ -147,7 +156,7 @@ STATIC s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
 	/* shut down queues we own and reset DMA configuration */
 	err = fm10k_disable_queues_generic(hw, i);
 	if (err)
-		return err;
+		goto reset_max_queues;
 
 	/* record maximum queue count */
 	hw->mac.max_queues = i;
@@ -155,13 +164,23 @@ STATIC s32 fm10k_init_hw_vf(struct fm10k_hw *hw)
 	/* fetch default VLAN and ITR scale */
 	hw->mac.default_vid = (FM10K_READ_REG(hw, FM10K_TXQCTL(0)) &
 			       FM10K_TXQCTL_VID_MASK) >> FM10K_TXQCTL_VID_SHIFT;
+	/* Read the ITR scale from TDLEN. See the definition of
+	 * FM10K_TDLEN_ITR_SCALE_SHIFT for more information about how TDLEN is
+	 * used here.
+	 */
 	hw->mac.itr_scale = (FM10K_READ_REG(hw, FM10K_TDLEN(0)) &
 			     FM10K_TDLEN_ITR_SCALE_MASK) >>
 			    FM10K_TDLEN_ITR_SCALE_SHIFT;
 
 	return FM10K_SUCCESS;
+
+reset_max_queues:
+	hw->mac.max_queues = 0;
+
+	return err;
 }
 
+#ifndef NO_IS_SLOT_APPROPRIATE_CHECK
 /**
  *  fm10k_is_slot_appropriate_vf - Indicate appropriate slot for this SKU
  *  @hw: pointer to hardware structure
@@ -178,6 +197,7 @@ STATIC bool fm10k_is_slot_appropriate_vf(struct fm10k_hw *hw)
 	return TRUE;
 }
 
+#endif
 /* This structure defines the attibutes to be parsed below */
 const struct fm10k_tlv_attr fm10k_mac_vlan_msg_attr[] = {
 	FM10K_TLV_ATTR_U32(FM10K_MAC_VLAN_MSG_VLAN),
@@ -207,7 +227,7 @@ STATIC s32 fm10k_update_vlan_vf(struct fm10k_hw *hw, u32 vid, u8 vsi, bool set)
 	if (vsi)
 		return FM10K_ERR_PARAM;
 
-	/* verify upper 4 bits of vid and length are 0 */
+	/* clever trick to verify reserved bits in both vid and length */
 	if ((vid << 16 | vid) >> 28)
 		return FM10K_ERR_PARAM;
 
@@ -250,7 +270,7 @@ s32 fm10k_msg_mac_vlan_vf(struct fm10k_hw *hw, u32 **results,
 
 	memcpy(hw->mac.perm_addr, perm_addr, ETH_ALEN);
 	hw->mac.default_vid = vid & (FM10K_VLAN_TABLE_VID_MAX - 1);
-	hw->mac.vlan_override = !!(vid & FM10K_VLAN_CLEAR);
+	hw->mac.vlan_override = !!(vid & FM10K_VLAN_OVERRIDE);
 
 	return FM10K_SUCCESS;
 }
@@ -321,11 +341,11 @@ STATIC s32 fm10k_update_uc_addr_vf(struct fm10k_hw *hw, u16 glort,
 		return FM10K_ERR_PARAM;
 
 	/* verify MAC address is valid */
-	if (!FM10K_IS_VALID_ETHER_ADDR(mac))
+	if (!IS_VALID_ETHER_ADDR(mac))
 		return FM10K_ERR_PARAM;
 
 	/* verify we are not locked down on the MAC address */
-	if (FM10K_IS_VALID_ETHER_ADDR(hw->mac.perm_addr) &&
+	if (IS_VALID_ETHER_ADDR(hw->mac.perm_addr) &&
 	    memcmp(hw->mac.perm_addr, mac, ETH_ALEN))
 		return FM10K_ERR_PARAM;
 
@@ -367,7 +387,7 @@ STATIC s32 fm10k_update_mc_addr_vf(struct fm10k_hw *hw, u16 glort,
 		return FM10K_ERR_PARAM;
 
 	/* verify multicast address is valid */
-	if (!FM10K_IS_MULTICAST_ETHER_ADDR(mac))
+	if (!IS_MULTICAST_ETHER_ADDR(mac))
 		return FM10K_ERR_PARAM;
 
 	/* add bit to notify us if this is a set or clear operation */
@@ -632,7 +652,9 @@ s32 fm10k_init_ops_vf(struct fm10k_hw *hw)
 	mac->ops.init_hw = &fm10k_init_hw_vf;
 	mac->ops.start_hw = &fm10k_start_hw_generic;
 	mac->ops.stop_hw = &fm10k_stop_hw_vf;
+#ifndef NO_IS_SLOT_APPROPRIATE_CHECK
 	mac->ops.is_slot_appropriate = &fm10k_is_slot_appropriate_vf;
+#endif
 	mac->ops.update_vlan = &fm10k_update_vlan_vf;
 	mac->ops.read_mac_addr = &fm10k_read_mac_addr_vf;
 	mac->ops.update_uc_addr = &fm10k_update_uc_addr_vf;