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ixgbe: Add X553 PHY FC autoneg support

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This patch adds X553 flow control auto negotiation for fiber and
backplain.  To enable this new function pointers were added as well
as creating a function to dynamically set function pointer we can't
define only on MAC type.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Don Skidmore 2016-09-27 14:31:12 -04:00 committed by Jeff Kirsher
parent 21d882eb3a
commit 2916500db3
7 changed files with 232 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@ -1027,4 +1027,6 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
struct ixgbe_ring *tx_ring);
u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter);
void ixgbe_store_reta(struct ixgbe_adapter *adapter);
s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm);
#endif /* _IXGBE_H_ */

3
drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c
View File

@ -367,7 +367,7 @@ static s32 ixgbe_fc_enable_82598(struct ixgbe_hw *hw)
}
/* Negotiate the fc mode to use */
ixgbe_fc_autoneg(hw);
hw->mac.ops.fc_autoneg(hw);
/* Disable any previous flow control settings */
fctrl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
@ -1194,6 +1194,7 @@ static const struct ixgbe_mac_operations mac_ops_82598 = {
.set_vfta = &ixgbe_set_vfta_82598,
.fc_enable = &ixgbe_fc_enable_82598,
.setup_fc = ixgbe_setup_fc_generic,
.fc_autoneg = ixgbe_fc_autoneg,
.set_fw_drv_ver = NULL,
.acquire_swfw_sync = &ixgbe_acquire_swfw_sync,
.release_swfw_sync = &ixgbe_release_swfw_sync,

1
drivers/net/ethernet/intel/ixgbe/ixgbe_82599.c
View File

@ -2220,6 +2220,7 @@ static const struct ixgbe_mac_operations mac_ops_82599 = {
.set_vfta = &ixgbe_set_vfta_generic,
.fc_enable = &ixgbe_fc_enable_generic,
.setup_fc = ixgbe_setup_fc_generic,
.fc_autoneg = ixgbe_fc_autoneg,
.set_fw_drv_ver = &ixgbe_set_fw_drv_ver_generic,
.init_uta_tables = &ixgbe_init_uta_tables_generic,
.setup_sfp = &ixgbe_setup_sfp_modules_82599,

16
drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
View File

@ -298,10 +298,12 @@ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
IXGBE_WRITE_FLUSH(hw);
/* Setup flow control */
ret_val = hw->mac.ops.setup_fc(hw);
if (ret_val)
return ret_val;
/* Setup flow control if method for doing so */
if (hw->mac.ops.setup_fc) {
ret_val = hw->mac.ops.setup_fc(hw);
if (ret_val)
return ret_val;
}
/* Cashe bit indicating need for crosstalk fix */
switch (hw->mac.type) {
@ -2173,7 +2175,7 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
}
/* Negotiate the fc mode to use */
ixgbe_fc_autoneg(hw);
hw->mac.ops.fc_autoneg(hw);
/* Disable any previous flow control settings */
mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
@ -2277,8 +2279,8 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
* Find the intersection between advertised settings and link partner's
* advertised settings
**/
static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
{
if ((!(adv_reg)) || (!(lp_reg)))
return IXGBE_ERR_FC_NOT_NEGOTIATED;

6
drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
View File

@ -3357,6 +3357,7 @@ struct ixgbe_mac_operations {
/* Flow Control */
s32 (*fc_enable)(struct ixgbe_hw *);
s32 (*setup_fc)(struct ixgbe_hw *);
void (*fc_autoneg)(struct ixgbe_hw *);
/* Manageability interface */
s32 (*set_fw_drv_ver)(struct ixgbe_hw *, u8, u8, u8, u8);
@ -3579,10 +3580,12 @@ struct ixgbe_info {
#define IXGBE_FUSES0_REV_MASK (3u << 6)
#define IXGBE_KRM_PORT_CAR_GEN_CTRL(P) ((P) ? 0x8010 : 0x4010)
#define IXGBE_KRM_LINK_S1(P) ((P) ? 0x8200 : 0x4200)
#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_LP_BASE_PAGE_HIGH(P) ((P) ? 0x836C : 0x436C)
#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)
@ -3604,6 +3607,7 @@ struct ixgbe_info {
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_CAP_KR BIT(18)
#define IXGBE_KRM_LINK_CTRL_1_TETH_EEE_CAP_KX BIT(24)
#define IXGBE_KRM_LINK_CTRL_1_TETH_EEE_CAP_KR BIT(26)
#define IXGBE_KRM_LINK_S1_MAC_AN_COMPLETE BIT(28)
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_ENABLE BIT(29)
#define IXGBE_KRM_LINK_CTRL_1_TETH_AN_RESTART BIT(31)
@ -3613,6 +3617,8 @@ struct ixgbe_info {
#define IXGBE_KRM_AN_CNTL_8_LINEAR BIT(0)
#define IXGBE_KRM_AN_CNTL_8_LIMITING BIT(1)
#define IXGBE_KRM_LP_BASE_PAGE_HIGH_SYM_PAUSE BIT(10)
#define IXGBE_KRM_LP_BASE_PAGE_HIGH_ASM_PAUSE BIT(11)
#define IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_100_D BIT(12)
#define IXGBE_KRM_SGMII_CTRL_MAC_TAR_FORCE_10_D BIT(19)

1
drivers/net/ethernet/intel/ixgbe/ixgbe_x540.c
View File

@ -867,6 +867,7 @@ static const struct ixgbe_mac_operations mac_ops_X540 = {
.set_vfta = &ixgbe_set_vfta_generic,
.fc_enable = &ixgbe_fc_enable_generic,
.setup_fc = ixgbe_setup_fc_generic,
.fc_autoneg = ixgbe_fc_autoneg,
.set_fw_drv_ver = &ixgbe_set_fw_drv_ver_generic,
.init_uta_tables = &ixgbe_init_uta_tables_generic,
.setup_sfp = NULL,

211
drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
View File

@ -28,6 +28,9 @@
static s32 ixgbe_setup_kr_speed_x550em(struct ixgbe_hw *, ixgbe_link_speed);
static s32 ixgbe_setup_fc_x550em(struct ixgbe_hw *);
static void ixgbe_fc_autoneg_fiber_x550em_a(struct ixgbe_hw *);
static void ixgbe_fc_autoneg_backplane_x550em_a(struct ixgbe_hw *);
static s32 ixgbe_setup_fc_backplane_x550em_a(struct ixgbe_hw *);
static s32 ixgbe_get_invariants_X550_x(struct ixgbe_hw *hw)
{
@ -1639,6 +1642,27 @@ ixgbe_setup_sgmii(struct ixgbe_hw *hw, __always_unused ixgbe_link_speed speed,
return rc;
}
/** ixgbe_init_mac_link_ops_X550em_a - Init mac link function pointers
* @hw: pointer to hardware structure
**/
static void ixgbe_init_mac_link_ops_X550em_a(struct ixgbe_hw *hw)
{
struct ixgbe_mac_info *mac = &hw->mac;
switch (mac->ops.get_media_type(hw)) {
case ixgbe_media_type_fiber:
mac->ops.setup_fc = NULL;
mac->ops.fc_autoneg = ixgbe_fc_autoneg_fiber_x550em_a;
break;
case ixgbe_media_type_backplane:
mac->ops.fc_autoneg = ixgbe_fc_autoneg_backplane_x550em_a;
mac->ops.setup_fc = ixgbe_setup_fc_backplane_x550em_a;
break;
default:
break;
}
}
/** ixgbe_init_mac_link_ops_X550em - init mac link function pointers
* @hw: pointer to hardware structure
**/
@ -1686,6 +1710,10 @@ static void ixgbe_init_mac_link_ops_X550em(struct ixgbe_hw *hw)
default:
break;
}
/* Additional modification for X550em_a devices */
if (hw->mac.type == ixgbe_mac_x550em_a)
ixgbe_init_mac_link_ops_X550em_a(hw);
}
/** ixgbe_setup_sfp_modules_X550em - Setup SFP module
@ -2301,6 +2329,90 @@ static s32 ixgbe_setup_fc_x550em(struct ixgbe_hw *hw)
return rc;
}
/**
* ixgbe_fc_autoneg_backplane_x550em_a - Enable flow control IEEE clause 37
* @hw: pointer to hardware structure
**/
static void ixgbe_fc_autoneg_backplane_x550em_a(struct ixgbe_hw *hw)
{
u32 link_s1, lp_an_page_low, an_cntl_1;
s32 status = IXGBE_ERR_FC_NOT_NEGOTIATED;
ixgbe_link_speed speed;
bool link_up;
/* AN should have completed when the cable was plugged in.
* Look for reasons to bail out. Bail out if:
* - FC autoneg is disabled, or if
* - link is not up.
*/
if (hw->fc.disable_fc_autoneg) {
hw_err(hw, "Flow control autoneg is disabled");
goto out;
}
hw->mac.ops.check_link(hw, &speed, &link_up, false);
if (!link_up) {
hw_err(hw, "The link is down");
goto out;
}
/* Check at auto-negotiation has completed */
status = hw->mac.ops.read_iosf_sb_reg(hw,
IXGBE_KRM_LINK_S1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, &link_s1);
if (status || (link_s1 & IXGBE_KRM_LINK_S1_MAC_AN_COMPLETE) == 0) {
hw_dbg(hw, "Auto-Negotiation did not complete\n");
status = IXGBE_ERR_FC_NOT_NEGOTIATED;
goto out;
}
/* Read the 10g AN autoc and LP ability registers and resolve
* local flow control settings accordingly
*/
status = hw->mac.ops.read_iosf_sb_reg(hw,
IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, &an_cntl_1);
if (status) {
hw_dbg(hw, "Auto-Negotiation did not complete\n");
goto out;
}
status = hw->mac.ops.read_iosf_sb_reg(hw,
IXGBE_KRM_LP_BASE_PAGE_HIGH(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, &lp_an_page_low);
if (status) {
hw_dbg(hw, "Auto-Negotiation did not complete\n");
goto out;
}
status = ixgbe_negotiate_fc(hw, an_cntl_1, lp_an_page_low,
IXGBE_KRM_AN_CNTL_1_SYM_PAUSE,
IXGBE_KRM_AN_CNTL_1_ASM_PAUSE,
IXGBE_KRM_LP_BASE_PAGE_HIGH_SYM_PAUSE,
IXGBE_KRM_LP_BASE_PAGE_HIGH_ASM_PAUSE);
out:
if (!status) {
hw->fc.fc_was_autonegged = true;
} else {
hw->fc.fc_was_autonegged = false;
hw->fc.current_mode = hw->fc.requested_mode;
}
}
/**
* ixgbe_fc_autoneg_fiber_x550em_a - passthrough FC settings
* @hw: pointer to hardware structure
**/
static void ixgbe_fc_autoneg_fiber_x550em_a(struct ixgbe_hw *hw)
{
hw->fc.fc_was_autonegged = false;
hw->fc.current_mode = hw->fc.requested_mode;
}
/** ixgbe_enter_lplu_x550em - Transition to low power states
* @hw: pointer to hardware structure
*
@ -2748,6 +2860,102 @@ static void ixgbe_set_source_address_pruning_X550(struct ixgbe_hw *hw,
IXGBE_WRITE_REG(hw, IXGBE_PFFLPH, (u32)(pfflp >> 32));
}
/**
* ixgbe_setup_fc_backplane_x550em_a - Set up flow control
* @hw: pointer to hardware structure
*
* Called at init time to set up flow control.
**/
static s32 ixgbe_setup_fc_backplane_x550em_a(struct ixgbe_hw *hw)
{
s32 status = 0;
u32 link_ctrl = 0;
u32 an_cntl = 0;
/* Validate the requested mode */
if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
hw_err(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
return IXGBE_ERR_INVALID_LINK_SETTINGS;
}
if (hw->fc.requested_mode == ixgbe_fc_default)
hw->fc.requested_mode = ixgbe_fc_full;
/* Set up the 1G and 10G flow control advertisement registers so the
* HW will be able to do FC autoneg once the cable is plugged in. If
* we link at 10G, the 1G advertisement is harmless and vice versa.
*/
status = hw->mac.ops.read_iosf_sb_reg(hw,
IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, &an_cntl);
if (status) {
hw_dbg(hw, "Auto-Negotiation did not complete\n");
return status;
}
/* The possible values of fc.requested_mode are:
* 0: Flow control is completely disabled
* 1: Rx flow control is enabled (we can receive pause frames,
* but not send pause frames).
* 2: Tx flow control is enabled (we can send pause frames but
* we do not support receiving pause frames).
* 3: Both Rx and Tx flow control (symmetric) are enabled.
* other: Invalid.
*/
switch (hw->fc.requested_mode) {
case ixgbe_fc_none:
/* Flow control completely disabled by software override. */
an_cntl &= ~(IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
IXGBE_KRM_AN_CNTL_1_ASM_PAUSE);
break;
case ixgbe_fc_tx_pause:
/* Tx Flow control is enabled, and Rx Flow control is
* disabled by software override.
*/
an_cntl |= IXGBE_KRM_AN_CNTL_1_ASM_PAUSE;
an_cntl &= ~IXGBE_KRM_AN_CNTL_1_SYM_PAUSE;
break;
case ixgbe_fc_rx_pause:
/* Rx Flow control is enabled and Tx Flow control is
* disabled by software override. Since there really
* isn't a way to advertise that we are capable of RX
* Pause ONLY, we will advertise that we support both
* symmetric and asymmetric Rx PAUSE, as such we fall
* through to the fc_full statement. Later, we will
* disable the adapter's ability to send PAUSE frames.
*/
case ixgbe_fc_full:
/* Flow control (both Rx and Tx) is enabled by SW override. */
an_cntl |= IXGBE_KRM_AN_CNTL_1_SYM_PAUSE |
IXGBE_KRM_AN_CNTL_1_ASM_PAUSE;
break;
default:
hw_err(hw, "Flow control param set incorrectly\n");
return IXGBE_ERR_CONFIG;
}
status = hw->mac.ops.write_iosf_sb_reg(hw,
IXGBE_KRM_AN_CNTL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, an_cntl);
/* Restart auto-negotiation. */
status = hw->mac.ops.read_iosf_sb_reg(hw,
IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, &link_ctrl);
if (status) {
hw_dbg(hw, "Auto-Negotiation did not complete\n");
return status;
}
link_ctrl |= IXGBE_KRM_LINK_CTRL_1_TETH_AN_RESTART;
status = hw->mac.ops.write_iosf_sb_reg(hw,
IXGBE_KRM_LINK_CTRL_1(hw->bus.lan_id),
IXGBE_SB_IOSF_TARGET_KR_PHY, link_ctrl);
return status;
}
/**
* ixgbe_set_mux - Set mux for port 1 access with CS4227
* @hw: pointer to hardware structure
@ -2969,6 +3177,7 @@ static const struct ixgbe_mac_operations mac_ops_X550 = {
.prot_autoc_read = prot_autoc_read_generic,
.prot_autoc_write = prot_autoc_write_generic,
.setup_fc = ixgbe_setup_fc_generic,
.fc_autoneg = ixgbe_fc_autoneg,
};
static const struct ixgbe_mac_operations mac_ops_X550EM_x = {
@ -2988,6 +3197,7 @@ static const struct ixgbe_mac_operations mac_ops_X550EM_x = {
.release_swfw_sync = &ixgbe_release_swfw_sync_X550em,
.init_swfw_sync = &ixgbe_init_swfw_sync_X540,
.setup_fc = NULL, /* defined later */
.fc_autoneg = ixgbe_fc_autoneg,
.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550,
.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550,
};
@ -3008,6 +3218,7 @@ static struct ixgbe_mac_operations mac_ops_x550em_a = {
.acquire_swfw_sync = ixgbe_acquire_swfw_sync_x550em_a,
.release_swfw_sync = ixgbe_release_swfw_sync_x550em_a,
.setup_fc = ixgbe_setup_fc_x550em,
.fc_autoneg = NULL, /* defined later */
.read_iosf_sb_reg = ixgbe_read_iosf_sb_reg_x550a,
.write_iosf_sb_reg = ixgbe_write_iosf_sb_reg_x550a,
};