From: Ouyang Changchun <changchun.ouyang@intel.com>
Date: Mon, 29 Sep 2014 07:16:23 +0000 (+0800)
Subject: ixgbe/base: reset VF registers
X-Git-Tag: spdx-start~10355
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=d17d0b7a240786b5dfe1c8c5d53f7d07faecc333;p=dpdk.git

ixgbe/base: reset VF registers

Reset VF registers to initial values in IXGBE base code.

Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
---

diff --git a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_type.h b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_type.h
index 43201ab8e3..ef593f4909 100644
--- a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_type.h
+++ b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_type.h
@@ -2241,6 +2241,10 @@ enum {
 
 /* SRRCTL bit definitions */
 #define IXGBE_SRRCTL_BSIZEPKT_SHIFT	10 /* so many KBs */
+#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT	2 /* 64byte resolution (>> 6)
+					   * + at bit 8 offset (<< 8)
+					   *  = (<< 2)
+					   */
 #define IXGBE_SRRCTL_RDMTS_SHIFT	22
 #define IXGBE_SRRCTL_RDMTS_MASK		0x01C00000
 #define IXGBE_SRRCTL_DROP_EN		0x10000000
diff --git a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c
index a2d6e61488..e6b6c517dc 100644
--- a/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c
+++ b/lib/librte_pmd_ixgbe/ixgbe/ixgbe_vf.c
@@ -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
@@ -161,6 +204,9 @@ s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
 	if (!timeout)
 		return IXGBE_ERR_RESET_FAILED;
 
+	/* Reset VF registers to initial values */
+	ixgbe_virt_clr_reg(hw);
+
 	/* mailbox timeout can now become active */
 	mbx->timeout = IXGBE_VF_MBX_INIT_TIMEOUT;