Commit 200157c2 authored by Mark Rustad's avatar Mark Rustad Committed by Jeff Kirsher
Browse files

ixgbe: Add support for SGMII backplane interface



Add support for an SGMII backplane interface.
Signed-off-by: default avatarMark Rustad <mark.d.rustad@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent 2d40cd17
......@@ -132,6 +132,8 @@ static const struct pci_device_id ixgbe_pci_tbl[] = {
{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x},
{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x},
{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a },
{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a },
{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a },
{PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a },
/* required last entry */
{0, }
......
......@@ -82,6 +82,8 @@
#define IXGBE_DEV_ID_X550EM_X_10G_T 0x15AD
#define IXGBE_DEV_ID_X550EM_X_1G_T 0x15AE
#define IXGBE_DEV_ID_X550EM_A_SFP_N 0x15C4
#define IXGBE_DEV_ID_X550EM_A_SGMII 0x15C6
#define IXGBE_DEV_ID_X550EM_A_SGMII_L 0x15C7
#define IXGBE_DEV_ID_X550EM_A_SFP 0x15CE
/* VF Device IDs */
......@@ -3065,6 +3067,7 @@ enum ixgbe_phy_type {
ixgbe_phy_qsfp_intel,
ixgbe_phy_qsfp_unknown,
ixgbe_phy_sfp_unsupported,
ixgbe_phy_sgmii,
ixgbe_phy_generic
};
......@@ -3582,6 +3585,7 @@ struct ixgbe_info {
#define IXGBE_KRM_LINK_CTRL_1(P) ((P) ? 0x820C : 0x420C)
#define IXGBE_KRM_AN_CNTL_1(P) ((P) ? 0x822C : 0x422C)
#define IXGBE_KRM_AN_CNTL_8(P) ((P) ? 0x8248 : 0x4248)
#define IXGBE_KRM_SGMII_CTRL(P) ((P) ? 0x82A0 : 0x42A0)
#define IXGBE_KRM_DSP_TXFFE_STATE_4(P) ((P) ? 0x8634 : 0x4634)
#define IXGBE_KRM_DSP_TXFFE_STATE_5(P) ((P) ? 0x8638 : 0x4638)
#define IXGBE_KRM_RX_TRN_LINKUP_CTRL(P) ((P) ? 0x8B00 : 0x4B00)
......@@ -3595,6 +3599,8 @@ struct ixgbe_info {
#define IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_MASK (0x7 << 8)
#define IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_1G (2 << 8)
#define IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_10G (4 << 8)
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_SGMII_EN BIT(12)
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_CLAUSE_37_EN BIT(13)
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_FEC_REQ (1 << 14)
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_FEC (1 << 15)
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KX (1 << 16)
......@@ -3610,6 +3616,9 @@ struct ixgbe_info {
#define IXGBE_KRM_AN_CNTL_8_LINEAR BIT(0)
#define IXGBE_KRM_AN_CNTL_8_LIMITING BIT(1)
#define IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_100_D BIT(12)
#define IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_10_D BIT(19)
#define IXGBE_KRM_DSP_TXFFE_STATE_C0_EN (1 << 6)
#define IXGBE_KRM_DSP_TXFFE_STATE_CP1_CN1_EN (1 << 15)
#define IXGBE_KRM_DSP_TXFFE_STATE_CO_ADAPT_EN (1 << 16)
......
......@@ -1558,6 +1558,57 @@ static s32 ixgbe_check_link_t_X550em(struct ixgbe_hw *hw,
return 0;
}
/**
* ixgbe_setup_sgmii - Set up link for sgmii
* @hw: pointer to hardware structure
*/
static s32
ixgbe_setup_sgmii(struct ixgbe_hw *hw, __always_unused ixgbe_link_speed speed,
__always_unused bool autoneg_wait_to_complete)
{
struct ixgbe_mac_info *mac = &hw->mac;
u32 lval, sval;
s32 rc;
rc = mac->ops.read_iosf_sb_reg(hw,
IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, &lval);
if (rc)
return rc;
lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE;
lval &= ~IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_MASK;
lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_SGMII_EN;
lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_CLAUSE_37_EN;
lval |= IXGBE_KRM_LINK_CTRL_1_TETH_FORCE_SPEED_1G;
rc = mac->ops.write_iosf_sb_reg(hw,
IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
if (rc)
return rc;
rc = mac->ops.read_iosf_sb_reg(hw,
IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, &sval);
if (rc)
return rc;
sval |= IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_10_D;
sval |= IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_100_D;
rc = mac->ops.write_iosf_sb_reg(hw,
IXGBE_KRM_SGMII_CTRL(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, sval);
if (rc)
return rc;
lval |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_RESTART;
rc = mac->ops.write_iosf_sb_reg(hw,
IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, lval);
return rc;
}
/** ixgbe_init_mac_link_ops_X550em - init mac link function pointers
* @hw: pointer to hardware structure
**/
......@@ -1597,6 +1648,9 @@ static void ixgbe_init_mac_link_ops_X550em(struct ixgbe_hw *hw)
mac->ops.check_link = ixgbe_check_link_t_X550em;
return;
case ixgbe_media_type_backplane:
if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SGMII ||
hw->device_id == IXGBE_DEV_ID_X550EM_A_SGMII_L)
mac->ops.setup_link = ixgbe_setup_sgmii;
break;
default:
mac->ops.setup_fc = ixgbe_setup_fc_x550em;
......@@ -2377,6 +2431,10 @@ static enum ixgbe_media_type ixgbe_get_media_type_X550em(struct ixgbe_hw *hw)
/* Detect if there is a copper PHY attached. */
switch (hw->device_id) {
case IXGBE_DEV_ID_X550EM_A_SGMII:
case IXGBE_DEV_ID_X550EM_A_SGMII_L:
hw->phy.type = ixgbe_phy_sgmii;
/* Fallthrough */
case IXGBE_DEV_ID_X550EM_X_KR:
case IXGBE_DEV_ID_X550EM_X_KX4:
media_type = ixgbe_media_type_backplane;
......
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