Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-01 17:51:43 +00:00
Code Issues Packages Projects Releases Wiki Activity

bnx2x: Adding XAUI CL73 autoneg support

Browse Source 
Adding CL73 support to the built in PHY in the 5771x device. Also supporting
fallbacks to CL73 if the link partner does not respond.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eilon Greenstein 2009-08-12 08:23:04 +00:00 committed by David S. Miller
parent bc7f0a0530
commit 239d686d49
2 changed files with 180 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

197
drivers/net/bnx2x_link.c
View File

@ -1151,7 +1151,8 @@ static void bnx2x_set_parallel_detection(struct link_params *params,
}
static void bnx2x_set_autoneg(struct link_params *params,
struct link_vars *vars)
struct link_vars *vars,
u8 enable_cl73)
{
struct bnx2x *bp = params->bp;
u16 reg_val;
@ -1181,7 +1182,9 @@ static void bnx2x_set_autoneg(struct link_params *params,
params->phy_addr,
MDIO_REG_BANK_SERDES_DIGITAL,
MDIO_SERDES_DIGITAL_A_1000X_CONTROL1, &reg_val);
reg_val &= ~MDIO_SERDES_DIGITAL_A_1000X_CONTROL1_SIGNAL_DETECT_EN;
reg_val &= ~(MDIO_SERDES_DIGITAL_A_1000X_CONTROL1_SIGNAL_DETECT_EN |
MDIO_SERDES_DIGITAL_A_1000X_CONTROL1_INVERT_SIGNAL_DETECT);
reg_val |= MDIO_SERDES_DIGITAL_A_1000X_CONTROL1_FIBER_MODE;
if (vars->line_speed == SPEED_AUTO_NEG)
reg_val |= MDIO_SERDES_DIGITAL_A_1000X_CONTROL1_AUTODET;
else
@ -1213,8 +1216,51 @@ static void bnx2x_set_autoneg(struct link_params *params,
MDIO_BAM_NEXT_PAGE_MP5_NEXT_PAGE_CTRL,
reg_val);
/* CL73 Autoneg Disabled */
reg_val = 0;
if (enable_cl73) {
/* Enable Cl73 FSM status bits */
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_USERB0,
MDIO_CL73_USERB0_CL73_UCTRL,
MDIO_CL73_USERB0_CL73_UCTRL_USTAT1_MUXSEL);
/* Enable BAM Station Manager*/
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_USERB0,
MDIO_CL73_USERB0_CL73_BAM_CTRL1,
MDIO_CL73_USERB0_CL73_BAM_CTRL1_BAM_EN |
MDIO_CL73_USERB0_CL73_BAM_CTRL1_BAM_STATION_MNGR_EN |
MDIO_CL73_USERB0_CL73_BAM_CTRL1_BAM_NP_AFTER_BP_EN);
/* Merge CL73 and CL37 aneg resolution */
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_USERB0,
MDIO_CL73_USERB0_CL73_BAM_CTRL3,
&reg_val);
if (params->speed_cap_mask &
PORT_HW_CFG_SPEED_CAPABILITY_D0_10G) {
/* Set the CL73 AN speed */
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_IEEEB1,
MDIO_CL73_IEEEB1_AN_ADV2,
&reg_val);
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_IEEEB1,
MDIO_CL73_IEEEB1_AN_ADV2,
reg_val | MDIO_CL73_IEEEB1_AN_ADV2_ADVR_10G_KX4);
}
/* CL73 Autoneg Enabled */
reg_val = MDIO_CL73_IEEEB0_CL73_AN_CONTROL_AN_EN;
} else /* CL73 Autoneg Disabled */
reg_val = 0;
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
@ -1297,7 +1343,7 @@ static void bnx2x_set_brcm_cl37_advertisment(struct link_params *params)
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_OVER_1G,
MDIO_OVER_1G_UP3, 0);
MDIO_OVER_1G_UP3, 0x400);
}
static void bnx2x_calc_ieee_aneg_adv(struct link_params *params, u32 *ieee_fc)
@ -1345,28 +1391,46 @@ static void bnx2x_set_ieee_aneg_advertisment(struct link_params *params,
MDIO_COMBO_IEEE0_AUTO_NEG_ADV, (u16)ieee_fc);
}
static void bnx2x_restart_autoneg(struct link_params *params)
static void bnx2x_restart_autoneg(struct link_params *params, u8 enable_cl73)
{
struct bnx2x *bp = params->bp;
u16 mii_control;
DP(NETIF_MSG_LINK, "bnx2x_restart_autoneg\n");
/* Enable and restart BAM/CL37 aneg */
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_COMBO_IEEE0,
MDIO_COMBO_IEEE0_MII_CONTROL,
&mii_control);
DP(NETIF_MSG_LINK,
"bnx2x_restart_autoneg mii_control before = 0x%x\n",
mii_control);
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_COMBO_IEEE0,
MDIO_COMBO_IEEE0_MII_CONTROL,
(mii_control |
MDIO_COMBO_IEEO_MII_CONTROL_AN_EN |
MDIO_COMBO_IEEO_MII_CONTROL_RESTART_AN));
if (enable_cl73) {
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_IEEEB0,
MDIO_CL73_IEEEB0_CL73_AN_CONTROL,
&mii_control);
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_IEEEB0,
MDIO_CL73_IEEEB0_CL73_AN_CONTROL,
(mii_control |
MDIO_CL73_IEEEB0_CL73_AN_CONTROL_AN_EN |
MDIO_CL73_IEEEB0_CL73_AN_CONTROL_RESTART_AN));
} else {
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_COMBO_IEEE0,
MDIO_COMBO_IEEE0_MII_CONTROL,
&mii_control);
DP(NETIF_MSG_LINK,
"bnx2x_restart_autoneg mii_control before = 0x%x\n",
mii_control);
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_COMBO_IEEE0,
MDIO_COMBO_IEEE0_MII_CONTROL,
(mii_control |
MDIO_COMBO_IEEO_MII_CONTROL_AN_EN |
MDIO_COMBO_IEEO_MII_CONTROL_RESTART_AN));
}
}
static void bnx2x_initialize_sgmii_process(struct link_params *params,
@ -1438,7 +1502,7 @@ static void bnx2x_initialize_sgmii_process(struct link_params *params,
} else { /* AN mode */
/* enable and restart AN */
bnx2x_restart_autoneg(params);
bnx2x_restart_autoneg(params, 0);
}
}
@ -1591,7 +1655,73 @@ static void bnx2x_flow_ctrl_resolve(struct link_params *params,
DP(NETIF_MSG_LINK, "flow_ctrl 0x%x\n", vars->flow_ctrl);
}
static void bnx2x_check_fallback_to_cl37(struct link_params *params)
{
struct bnx2x *bp = params->bp;
u16 rx_status, ustat_val, cl37_fsm_recieved;
DP(NETIF_MSG_LINK, "bnx2x_check_fallback_to_cl37\n");
/* Step 1: Make sure signal is detected */
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_RX0,
MDIO_RX0_RX_STATUS,
&rx_status);
if ((rx_status & MDIO_RX0_RX_STATUS_SIGDET) !=
(MDIO_RX0_RX_STATUS_SIGDET)) {
DP(NETIF_MSG_LINK, "Signal is not detected. Restoring CL73."
"rx_status(0x80b0) = 0x%x\n", rx_status);
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_IEEEB0,
MDIO_CL73_IEEEB0_CL73_AN_CONTROL,
MDIO_CL73_IEEEB0_CL73_AN_CONTROL_AN_EN);
return;
}
/* Step 2: Check CL73 state machine */
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_USERB0,
MDIO_CL73_USERB0_CL73_USTAT1,
&ustat_val);
if ((ustat_val &
(MDIO_CL73_USERB0_CL73_USTAT1_LINK_STATUS_CHECK |
MDIO_CL73_USERB0_CL73_USTAT1_AN_GOOD_CHECK_BAM37)) !=
(MDIO_CL73_USERB0_CL73_USTAT1_LINK_STATUS_CHECK |
MDIO_CL73_USERB0_CL73_USTAT1_AN_GOOD_CHECK_BAM37)) {
DP(NETIF_MSG_LINK, "CL73 state-machine is not stable. "
"ustat_val(0x8371) = 0x%x\n", ustat_val);
return;
}
/* Step 3: Check CL37 Message Pages received to indicate LP
supports only CL37 */
CL45_RD_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_REMOTE_PHY,
MDIO_REMOTE_PHY_MISC_RX_STATUS,
&cl37_fsm_recieved);
if ((cl37_fsm_recieved &
(MDIO_REMOTE_PHY_MISC_RX_STATUS_CL37_FSM_RECEIVED_OVER1G_MSG |
MDIO_REMOTE_PHY_MISC_RX_STATUS_CL37_FSM_RECEIVED_BRCM_OUI_MSG)) !=
(MDIO_REMOTE_PHY_MISC_RX_STATUS_CL37_FSM_RECEIVED_OVER1G_MSG |
MDIO_REMOTE_PHY_MISC_RX_STATUS_CL37_FSM_RECEIVED_BRCM_OUI_MSG)) {
DP(NETIF_MSG_LINK, "No CL37 FSM were received. "
"misc_rx_status(0x8330) = 0x%x\n",
cl37_fsm_recieved);
return;
}
/* The combined cl37/cl73 fsm state information indicating that we are
connected to a device which does not support cl73, but does support
cl37 BAM. In this case we disable cl73 and restart cl37 auto-neg */
/* Disable CL73 */
CL45_WR_OVER_CL22(bp, params->port,
params->phy_addr,
MDIO_REG_BANK_CL73_IEEEB0,
MDIO_CL73_IEEEB0_CL73_AN_CONTROL,
0);
/* Restart CL37 autoneg */
bnx2x_restart_autoneg(params, 0);
DP(NETIF_MSG_LINK, "Disabling CL73, and restarting CL37 autoneg\n");
}
static u8 bnx2x_link_settings_status(struct link_params *params,
struct link_vars *vars,
u32 gp_status,
@ -1755,6 +1885,13 @@ static u8 bnx2x_link_settings_status(struct link_params *params,
vars->flow_ctrl = BNX2X_FLOW_CTRL_NONE;
vars->autoneg = AUTO_NEG_DISABLED;
vars->mac_type = MAC_TYPE_NONE;
if ((params->req_line_speed == SPEED_AUTO_NEG) &&
((XGXS_EXT_PHY_TYPE(params->ext_phy_config) ==
PORT_HW_CFG_XGXS_EXT_PHY_TYPE_DIRECT))) {
/* Check signal is detected */
bnx2x_check_fallback_to_cl37(params);
}
}
DP(NETIF_MSG_LINK, "gp_status 0x%x phy_link_up %x line_speed %x \n",
@ -3425,7 +3562,8 @@ static void bnx2x_8481_set_10G_led_mode(struct link_params *params,
static void bnx2x_init_internal_phy(struct link_params *params,
struct link_vars *vars)
struct link_vars *vars,
u8 enable_cl73)
{
struct bnx2x *bp = params->bp;
if (!(vars->phy_flags & PHY_SGMII_FLAG)) {
@ -3440,7 +3578,7 @@ static void bnx2x_init_internal_phy(struct link_params *params,
DP(NETIF_MSG_LINK, "not SGMII, no AN\n");
/* disable autoneg */
bnx2x_set_autoneg(params, vars);
bnx2x_set_autoneg(params, vars, 0);
/* program speed and duplex */
bnx2x_program_serdes(params, vars);
@ -3456,10 +3594,10 @@ static void bnx2x_init_internal_phy(struct link_params *params,
vars->ieee_fc);
/* enable autoneg */
bnx2x_set_autoneg(params, vars);
bnx2x_set_autoneg(params, vars, enable_cl73);
/* enable and restart AN */
bnx2x_restart_autoneg(params);
bnx2x_restart_autoneg(params, enable_cl73);
}
} else { /* SGMII mode */
@ -5815,11 +5953,10 @@ static u8 bnx2x_link_initialize(struct link_params *params,
if (non_ext_phy ||
(ext_phy_type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8705) ||
(ext_phy_type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8726) ||
(ext_phy_type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8481) ||
(params->loopback_mode == LOOPBACK_EXT_PHY)) {
if (params->req_line_speed == SPEED_AUTO_NEG)
bnx2x_set_parallel_detection(params, vars->phy_flags);
bnx2x_init_internal_phy(params, vars);
bnx2x_init_internal_phy(params, vars, non_ext_phy);
}
if (!non_ext_phy)
@ -6296,7 +6433,7 @@ u8 bnx2x_link_update(struct link_params *params, struct link_vars *vars)
(ext_phy_type != PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8705) &&
(ext_phy_type != PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8726) &&
(ext_phy_link_up && !vars->phy_link_up))
bnx2x_init_internal_phy(params, vars);
bnx2x_init_internal_phy(params, vars, 0);
/* link is up only if both local phy and external phy are up */
vars->link_up = (ext_phy_link_up && vars->phy_link_up);

13
drivers/net/bnx2x_reg.h
View File

@ -5596,6 +5596,9 @@
#define MDIO_CL73_IEEEB1_AN_ADV2_ADVR_10G_KR 0x0080
#define MDIO_REG_BANK_RX0 0x80b0
#define MDIO_RX0_RX_STATUS 0x10
#define MDIO_RX0_RX_STATUS_SIGDET 0x8000
#define MDIO_RX0_RX_STATUS_RX_SEQ_DONE 0x1000
#define MDIO_RX0_RX_EQ_BOOST 0x1c
#define MDIO_RX0_RX_EQ_BOOST_EQUALIZER_CTRL_MASK 0x7
#define MDIO_RX0_RX_EQ_BOOST_OFFSET_CTRL 0x10
@ -5789,12 +5792,22 @@
#define MDIO_OVER_1G_LP_UP2_PREEMPHASIS_SHIFT 7
#define MDIO_OVER_1G_LP_UP3 0x1E
#define MDIO_REG_BANK_REMOTE_PHY 0x8330
#define MDIO_REMOTE_PHY_MISC_RX_STATUS 0x10
#define MDIO_REMOTE_PHY_MISC_RX_STATUS_CL37_FSM_RECEIVED_OVER1G_MSG 0x0010
#define MDIO_REMOTE_PHY_MISC_RX_STATUS_CL37_FSM_RECEIVED_BRCM_OUI_MSG 0x0600
#define MDIO_REG_BANK_BAM_NEXT_PAGE 0x8350
#define MDIO_BAM_NEXT_PAGE_MP5_NEXT_PAGE_CTRL 0x10
#define MDIO_BAM_NEXT_PAGE_MP5_NEXT_PAGE_CTRL_BAM_MODE 0x0001
#define MDIO_BAM_NEXT_PAGE_MP5_NEXT_PAGE_CTRL_TETON_AN 0x0002
#define MDIO_REG_BANK_CL73_USERB0 0x8370
#define MDIO_CL73_USERB0_CL73_UCTRL 0x10
#define MDIO_CL73_USERB0_CL73_UCTRL_USTAT1_MUXSEL 0x0002
#define MDIO_CL73_USERB0_CL73_USTAT1 0x11
#define MDIO_CL73_USERB0_CL73_USTAT1_LINK_STATUS_CHECK 0x0100
#define MDIO_CL73_USERB0_CL73_USTAT1_AN_GOOD_CHECK_BAM37 0x0400
#define MDIO_CL73_USERB0_CL73_BAM_CTRL1 0x12
#define MDIO_CL73_USERB0_CL73_BAM_CTRL1_BAM_EN 0x8000
#define MDIO_CL73_USERB0_CL73_BAM_CTRL1_BAM_STATION_MNGR_EN 0x4000