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Date: Mon, 10 Sep 2012 18:51:06 +0300
From: "Yuval Mintz" <yuvalmin@...adcom.com>
To: davem@...emloft.net, netdev@...r.kernel.org
cc: eilong@...adcom.com, "Yuval Mintz" <yuvalmin@...adcom.com>
Subject: [net-next PATCH 3/5] bnx2x: EEE code refactoring
In order to lay the foundation for 1G EEE support, several segments of code
which are common to both 1G and 10G EEE configurations were extracted from
the 10G EEE configuration flow to their own functions.
E.g., bnx2x_eee_initial_config, bnx2x_eee_advertise, bnx2x_eee_disable, etc.
The rest of the EEE functions were relocated and placed in a single,
continuous section of the file.
Signed-off-by: Yuval Mintz <yuvalmin@...adcom.com>
Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 450 +++++++++++++---------
1 files changed, 258 insertions(+), 192 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index bf60c07..f6178a1 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -1307,93 +1307,6 @@ int bnx2x_ets_strict(const struct link_params *params, const u8 strict_cos)
}
/******************************************************************/
-/* EEE section */
-/******************************************************************/
-static u8 bnx2x_eee_has_cap(struct link_params *params)
-{
- struct bnx2x *bp = params->bp;
-
- if (REG_RD(bp, params->shmem2_base) <=
- offsetof(struct shmem2_region, eee_status[params->port]))
- return 0;
-
- return 1;
-}
-
-static int bnx2x_eee_nvram_to_time(u32 nvram_mode, u32 *idle_timer)
-{
- switch (nvram_mode) {
- case PORT_FEAT_CFG_EEE_POWER_MODE_BALANCED:
- *idle_timer = EEE_MODE_NVRAM_BALANCED_TIME;
- break;
- case PORT_FEAT_CFG_EEE_POWER_MODE_AGGRESSIVE:
- *idle_timer = EEE_MODE_NVRAM_AGGRESSIVE_TIME;
- break;
- case PORT_FEAT_CFG_EEE_POWER_MODE_LOW_LATENCY:
- *idle_timer = EEE_MODE_NVRAM_LATENCY_TIME;
- break;
- default:
- *idle_timer = 0;
- break;
- }
-
- return 0;
-}
-
-static int bnx2x_eee_time_to_nvram(u32 idle_timer, u32 *nvram_mode)
-{
- switch (idle_timer) {
- case EEE_MODE_NVRAM_BALANCED_TIME:
- *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_BALANCED;
- break;
- case EEE_MODE_NVRAM_AGGRESSIVE_TIME:
- *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_AGGRESSIVE;
- break;
- case EEE_MODE_NVRAM_LATENCY_TIME:
- *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_LOW_LATENCY;
- break;
- default:
- *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_DISABLED;
- break;
- }
-
- return 0;
-}
-
-static u32 bnx2x_eee_calc_timer(struct link_params *params)
-{
- u32 eee_mode, eee_idle;
- struct bnx2x *bp = params->bp;
-
- if (params->eee_mode & EEE_MODE_OVERRIDE_NVRAM) {
- if (params->eee_mode & EEE_MODE_OUTPUT_TIME) {
- /* time value in eee_mode --> used directly*/
- eee_idle = params->eee_mode & EEE_MODE_TIMER_MASK;
- } else {
- /* hsi value in eee_mode --> time */
- if (bnx2x_eee_nvram_to_time(params->eee_mode &
- EEE_MODE_NVRAM_MASK,
- &eee_idle))
- return 0;
- }
- } else {
- /* hsi values in nvram --> time*/
- eee_mode = ((REG_RD(bp, params->shmem_base +
- offsetof(struct shmem_region, dev_info.
- port_feature_config[params->port].
- eee_power_mode)) &
- PORT_FEAT_CFG_EEE_POWER_MODE_MASK) >>
- PORT_FEAT_CFG_EEE_POWER_MODE_SHIFT);
-
- if (bnx2x_eee_nvram_to_time(eee_mode, &eee_idle))
- return 0;
- }
-
- return eee_idle;
-}
-
-
-/******************************************************************/
/* PFC section */
/******************************************************************/
static void bnx2x_update_pfc_xmac(struct link_params *params,
@@ -2529,16 +2442,6 @@ static void bnx2x_update_mng(struct link_params *params, u32 link_status)
port_mb[params->port].link_status), link_status);
}
-static void bnx2x_update_mng_eee(struct link_params *params, u32 eee_status)
-{
- struct bnx2x *bp = params->bp;
-
- if (bnx2x_eee_has_cap(params))
- REG_WR(bp, params->shmem2_base +
- offsetof(struct shmem2_region,
- eee_status[params->port]), eee_status);
-}
-
static void bnx2x_update_pfc_nig(struct link_params *params,
struct link_vars *vars,
struct bnx2x_nig_brb_pfc_port_params *nig_params)
@@ -3231,6 +3134,245 @@ static int bnx2x_cl45_write(struct bnx2x *bp, struct bnx2x_phy *phy,
EMAC_MDIO_STATUS_10MB);
return rc;
}
+
+/******************************************************************/
+/* EEE section */
+/******************************************************************/
+static u8 bnx2x_eee_has_cap(struct link_params *params)
+{
+ struct bnx2x *bp = params->bp;
+
+ if (REG_RD(bp, params->shmem2_base) <=
+ offsetof(struct shmem2_region, eee_status[params->port]))
+ return 0;
+
+ return 1;
+}
+
+static int bnx2x_eee_nvram_to_time(u32 nvram_mode, u32 *idle_timer)
+{
+ switch (nvram_mode) {
+ case PORT_FEAT_CFG_EEE_POWER_MODE_BALANCED:
+ *idle_timer = EEE_MODE_NVRAM_BALANCED_TIME;
+ break;
+ case PORT_FEAT_CFG_EEE_POWER_MODE_AGGRESSIVE:
+ *idle_timer = EEE_MODE_NVRAM_AGGRESSIVE_TIME;
+ break;
+ case PORT_FEAT_CFG_EEE_POWER_MODE_LOW_LATENCY:
+ *idle_timer = EEE_MODE_NVRAM_LATENCY_TIME;
+ break;
+ default:
+ *idle_timer = 0;
+ break;
+ }
+
+ return 0;
+}
+
+static int bnx2x_eee_time_to_nvram(u32 idle_timer, u32 *nvram_mode)
+{
+ switch (idle_timer) {
+ case EEE_MODE_NVRAM_BALANCED_TIME:
+ *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_BALANCED;
+ break;
+ case EEE_MODE_NVRAM_AGGRESSIVE_TIME:
+ *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_AGGRESSIVE;
+ break;
+ case EEE_MODE_NVRAM_LATENCY_TIME:
+ *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_LOW_LATENCY;
+ break;
+ default:
+ *nvram_mode = PORT_FEAT_CFG_EEE_POWER_MODE_DISABLED;
+ break;
+ }
+
+ return 0;
+}
+
+static u32 bnx2x_eee_calc_timer(struct link_params *params)
+{
+ u32 eee_mode, eee_idle;
+ struct bnx2x *bp = params->bp;
+
+ if (params->eee_mode & EEE_MODE_OVERRIDE_NVRAM) {
+ if (params->eee_mode & EEE_MODE_OUTPUT_TIME) {
+ /* time value in eee_mode --> used directly*/
+ eee_idle = params->eee_mode & EEE_MODE_TIMER_MASK;
+ } else {
+ /* hsi value in eee_mode --> time */
+ if (bnx2x_eee_nvram_to_time(params->eee_mode &
+ EEE_MODE_NVRAM_MASK,
+ &eee_idle))
+ return 0;
+ }
+ } else {
+ /* hsi values in nvram --> time*/
+ eee_mode = ((REG_RD(bp, params->shmem_base +
+ offsetof(struct shmem_region, dev_info.
+ port_feature_config[params->port].
+ eee_power_mode)) &
+ PORT_FEAT_CFG_EEE_POWER_MODE_MASK) >>
+ PORT_FEAT_CFG_EEE_POWER_MODE_SHIFT);
+
+ if (bnx2x_eee_nvram_to_time(eee_mode, &eee_idle))
+ return 0;
+ }
+
+ return eee_idle;
+}
+
+static int bnx2x_eee_set_timers(struct link_params *params,
+ struct link_vars *vars)
+{
+ u32 eee_idle = 0, eee_mode;
+ struct bnx2x *bp = params->bp;
+
+ eee_idle = bnx2x_eee_calc_timer(params);
+
+ if (eee_idle) {
+ REG_WR(bp, MISC_REG_CPMU_LP_IDLE_THR_P0 + (params->port << 2),
+ eee_idle);
+ } else if ((params->eee_mode & EEE_MODE_ENABLE_LPI) &&
+ (params->eee_mode & EEE_MODE_OVERRIDE_NVRAM) &&
+ (params->eee_mode & EEE_MODE_OUTPUT_TIME)) {
+ DP(NETIF_MSG_LINK, "Error: Tx LPI is enabled with timer 0\n");
+ return -EINVAL;
+ }
+
+ vars->eee_status &= ~(SHMEM_EEE_TIMER_MASK | SHMEM_EEE_TIME_OUTPUT_BIT);
+ if (params->eee_mode & EEE_MODE_OUTPUT_TIME) {
+ /* eee_idle in 1u --> eee_status in 16u */
+ eee_idle >>= 4;
+ vars->eee_status |= (eee_idle & SHMEM_EEE_TIMER_MASK) |
+ SHMEM_EEE_TIME_OUTPUT_BIT;
+ } else {
+ if (bnx2x_eee_time_to_nvram(eee_idle, &eee_mode))
+ return -EINVAL;
+ vars->eee_status |= eee_mode;
+ }
+
+ return 0;
+}
+
+static int bnx2x_eee_initial_config(struct link_params *params,
+ struct link_vars *vars, u8 mode)
+{
+ vars->eee_status |= ((u32) mode) << SHMEM_EEE_SUPPORTED_SHIFT;
+
+ /* Propogate params' bits --> vars (for migration exposure) */
+ if (params->eee_mode & EEE_MODE_ENABLE_LPI)
+ vars->eee_status |= SHMEM_EEE_LPI_REQUESTED_BIT;
+ else
+ vars->eee_status &= ~SHMEM_EEE_LPI_REQUESTED_BIT;
+
+ if (params->eee_mode & EEE_MODE_ADV_LPI)
+ vars->eee_status |= SHMEM_EEE_REQUESTED_BIT;
+ else
+ vars->eee_status &= ~SHMEM_EEE_REQUESTED_BIT;
+
+ return bnx2x_eee_set_timers(params, vars);
+}
+
+static int bnx2x_eee_disable(struct bnx2x_phy *phy,
+ struct link_params *params,
+ struct link_vars *vars)
+{
+ struct bnx2x *bp = params->bp;
+
+ /* Make Certain LPI is disabled */
+ REG_WR(bp, MISC_REG_CPMU_LP_FW_ENABLE_P0 + (params->port << 2), 0);
+
+ bnx2x_cl45_write(bp, phy, MDIO_AN_DEVAD, MDIO_AN_REG_EEE_ADV, 0x0);
+
+ vars->eee_status &= ~SHMEM_EEE_ADV_STATUS_MASK;
+
+ return 0;
+}
+
+static int bnx2x_eee_advertise(struct bnx2x_phy *phy,
+ struct link_params *params,
+ struct link_vars *vars, u8 modes)
+{
+ struct bnx2x *bp = params->bp;
+ u16 val = 0;
+
+ /* Mask events preventing LPI generation */
+ REG_WR(bp, MISC_REG_CPMU_LP_MASK_EXT_P0 + (params->port << 2), 0xfc20);
+
+ if (modes & SHMEM_EEE_10G_ADV) {
+ DP(NETIF_MSG_LINK, "Advertise 10GBase-T EEE\n");
+ val |= 0x8;
+ }
+ if (modes & SHMEM_EEE_1G_ADV) {
+ DP(NETIF_MSG_LINK, "Advertise 1GBase-T EEE\n");
+ val |= 0x4;
+ }
+
+ bnx2x_cl45_write(bp, phy, MDIO_AN_DEVAD, MDIO_AN_REG_EEE_ADV, val);
+
+ vars->eee_status &= ~SHMEM_EEE_ADV_STATUS_MASK;
+ vars->eee_status |= (modes << SHMEM_EEE_ADV_STATUS_SHIFT);
+
+ return 0;
+}
+
+static void bnx2x_update_mng_eee(struct link_params *params, u32 eee_status)
+{
+ struct bnx2x *bp = params->bp;
+
+ if (bnx2x_eee_has_cap(params))
+ REG_WR(bp, params->shmem2_base +
+ offsetof(struct shmem2_region,
+ eee_status[params->port]), eee_status);
+}
+
+static void bnx2x_eee_an_resolve(struct bnx2x_phy *phy,
+ struct link_params *params,
+ struct link_vars *vars)
+{
+ struct bnx2x *bp = params->bp;
+ u16 adv = 0, lp = 0;
+ u32 lp_adv = 0;
+ u8 neg = 0;
+
+ bnx2x_cl45_read(bp, phy, MDIO_AN_DEVAD, MDIO_AN_REG_EEE_ADV, &adv);
+ bnx2x_cl45_read(bp, phy, MDIO_AN_DEVAD, MDIO_AN_REG_LP_EEE_ADV, &lp);
+
+ if (lp & 0x2) {
+ lp_adv |= SHMEM_EEE_100M_ADV;
+ if (adv & 0x2) {
+ if (vars->line_speed == SPEED_100)
+ neg = 1;
+ DP(NETIF_MSG_LINK, "EEE negotiated - 100M\n");
+ }
+ }
+ if (lp & 0x14) {
+ lp_adv |= SHMEM_EEE_1G_ADV;
+ if (adv & 0x14) {
+ if (vars->line_speed == SPEED_1000)
+ neg = 1;
+ DP(NETIF_MSG_LINK, "EEE negotiated - 1G\n");
+ }
+ }
+ if (lp & 0x68) {
+ lp_adv |= SHMEM_EEE_10G_ADV;
+ if (adv & 0x68) {
+ if (vars->line_speed == SPEED_10000)
+ neg = 1;
+ DP(NETIF_MSG_LINK, "EEE negotiated - 10G\n");
+ }
+ }
+
+ vars->eee_status &= ~SHMEM_EEE_LP_ADV_STATUS_MASK;
+ vars->eee_status |= (lp_adv << SHMEM_EEE_LP_ADV_STATUS_SHIFT);
+
+ if (neg) {
+ DP(NETIF_MSG_LINK, "EEE is active\n");
+ vars->eee_status |= SHMEM_EEE_ACTIVE_BIT;
+ }
+
+}
+
/******************************************************************/
/* BSC access functions from E3 */
/******************************************************************/
@@ -3752,6 +3894,19 @@ static u8 bnx2x_ext_phy_resolve_fc(struct bnx2x_phy *phy,
* init configuration, and set/clear SGMII flag. Internal
* phy init is done purely in phy_init stage.
*/
+
+static void bnx2x_warpcore_set_lpi_passthrough(struct bnx2x_phy *phy,
+ struct link_params *params)
+{
+ struct bnx2x *bp = params->bp;
+
+ DP(NETIF_MSG_LINK, "Configure WC for LPI pass through\n");
+ bnx2x_cl45_write(bp, phy, MDIO_WC_DEVAD,
+ MDIO_WC_REG_EEE_COMBO_CONTROL0, 0x7c);
+ bnx2x_cl45_read_or_write(bp, phy, MDIO_WC_DEVAD,
+ MDIO_WC_REG_DIGITAL4_MISC5, 0xc000);
+}
+
static void bnx2x_warpcore_enable_AN_KR(struct bnx2x_phy *phy,
struct link_params *params,
struct link_vars *vars) {
@@ -4011,13 +4166,7 @@ static void bnx2x_warpcore_set_10G_XFI(struct bnx2x_phy *phy,
bnx2x_cl45_read_or_write(bp, phy, MDIO_WC_DEVAD,
MDIO_WC_REG_DIGITAL4_MISC3, 0x8080);
- /* Enable LPI pass through */
- DP(NETIF_MSG_LINK, "Configure WC for LPI pass through\n");
- bnx2x_cl45_write(bp, phy, MDIO_WC_DEVAD,
- MDIO_WC_REG_EEE_COMBO_CONTROL0,
- 0x7c);
- bnx2x_cl45_read_or_write(bp, phy, MDIO_WC_DEVAD,
- MDIO_WC_REG_DIGITAL4_MISC5, 0xc000);
+ bnx2x_warpcore_set_lpi_passthrough(phy, params);
/* 10G XFI Full Duplex */
bnx2x_cl45_write(bp, phy, MDIO_WC_DEVAD,
@@ -9886,39 +10035,6 @@ static int bnx2x_84833_hw_reset_phy(struct bnx2x_phy *phy,
return 0;
}
-static int bnx2x_8483x_eee_timers(struct link_params *params,
- struct link_vars *vars)
-{
- u32 eee_idle = 0, eee_mode;
- struct bnx2x *bp = params->bp;
-
- eee_idle = bnx2x_eee_calc_timer(params);
-
- if (eee_idle) {
- REG_WR(bp, MISC_REG_CPMU_LP_IDLE_THR_P0 + (params->port << 2),
- eee_idle);
- } else if ((params->eee_mode & EEE_MODE_ENABLE_LPI) &&
- (params->eee_mode & EEE_MODE_OVERRIDE_NVRAM) &&
- (params->eee_mode & EEE_MODE_OUTPUT_TIME)) {
- DP(NETIF_MSG_LINK, "Error: Tx LPI is enabled with timer 0\n");
- return -EINVAL;
- }
-
- vars->eee_status &= ~(SHMEM_EEE_TIMER_MASK | SHMEM_EEE_TIME_OUTPUT_BIT);
- if (params->eee_mode & EEE_MODE_OUTPUT_TIME) {
- /* eee_idle in 1u --> eee_status in 16u */
- eee_idle >>= 4;
- vars->eee_status |= (eee_idle & SHMEM_EEE_TIMER_MASK) |
- SHMEM_EEE_TIME_OUTPUT_BIT;
- } else {
- if (bnx2x_eee_time_to_nvram(eee_idle, &eee_mode))
- return -EINVAL;
- vars->eee_status |= eee_mode;
- }
-
- return 0;
-}
-
static int bnx2x_8483x_disable_eee(struct bnx2x_phy *phy,
struct link_params *params,
struct link_vars *vars)
@@ -9929,9 +10045,6 @@ static int bnx2x_8483x_disable_eee(struct bnx2x_phy *phy,
DP(NETIF_MSG_LINK, "Don't Advertise 10GBase-T EEE\n");
- /* Make Certain LPI is disabled */
- REG_WR(bp, MISC_REG_CPMU_LP_FW_ENABLE_P0 + (params->port << 2), 0);
-
/* Prevent Phy from working in EEE and advertising it */
rc = bnx2x_84833_cmd_hdlr(phy, params,
PHY84833_CMD_SET_EEE_MODE, &cmd_args, 1);
@@ -9940,10 +10053,7 @@ static int bnx2x_8483x_disable_eee(struct bnx2x_phy *phy,
return rc;
}
- bnx2x_cl45_write(bp, phy, MDIO_AN_DEVAD, MDIO_AN_REG_EEE_ADV, 0);
- vars->eee_status &= ~SHMEM_EEE_ADV_STATUS_MASK;
-
- return 0;
+ return bnx2x_eee_disable(phy, params, vars);
}
static int bnx2x_8483x_enable_eee(struct bnx2x_phy *phy,
@@ -9954,8 +10064,6 @@ static int bnx2x_8483x_enable_eee(struct bnx2x_phy *phy,
struct bnx2x *bp = params->bp;
u16 cmd_args = 1;
- DP(NETIF_MSG_LINK, "Advertise 10GBase-T EEE\n");
-
rc = bnx2x_84833_cmd_hdlr(phy, params,
PHY84833_CMD_SET_EEE_MODE, &cmd_args, 1);
if (rc) {
@@ -9963,15 +10071,7 @@ static int bnx2x_8483x_enable_eee(struct bnx2x_phy *phy,
return rc;
}
- bnx2x_cl45_write(bp, phy, MDIO_AN_DEVAD, MDIO_AN_REG_EEE_ADV, 0x8);
-
- /* Mask events preventing LPI generation */
- REG_WR(bp, MISC_REG_CPMU_LP_MASK_EXT_P0 + (params->port << 2), 0xfc20);
-
- vars->eee_status &= ~SHMEM_EEE_ADV_STATUS_MASK;
- vars->eee_status |= (SHMEM_EEE_10G_ADV << SHMEM_EEE_ADV_STATUS_SHIFT);
-
- return 0;
+ return bnx2x_eee_advertise(phy, params, vars, SHMEM_EEE_10G_ADV);
}
#define PHY84833_CONSTANT_LATENCY 1193
@@ -10105,20 +10205,7 @@ static int bnx2x_848x3_config_init(struct bnx2x_phy *phy,
/* Configure EEE support */
if ((val >= MDIO_84833_TOP_CFG_FW_EEE) && bnx2x_eee_has_cap(params)) {
phy->flags |= FLAGS_EEE_10GBT;
- vars->eee_status |= SHMEM_EEE_10G_ADV <<
- SHMEM_EEE_SUPPORTED_SHIFT;
- /* Propogate params' bits --> vars (for migration exposure) */
- if (params->eee_mode & EEE_MODE_ENABLE_LPI)
- vars->eee_status |= SHMEM_EEE_LPI_REQUESTED_BIT;
- else
- vars->eee_status &= ~SHMEM_EEE_LPI_REQUESTED_BIT;
-
- if (params->eee_mode & EEE_MODE_ADV_LPI)
- vars->eee_status |= SHMEM_EEE_REQUESTED_BIT;
- else
- vars->eee_status &= ~SHMEM_EEE_REQUESTED_BIT;
-
- rc = bnx2x_8483x_eee_timers(params, vars);
+ rc = bnx2x_eee_initial_config(params, vars, SHMEM_EEE_10G_ADV);
if (rc) {
DP(NETIF_MSG_LINK, "Failed to configure EEE timers\n");
bnx2x_8483x_disable_eee(phy, params, vars);
@@ -10276,29 +10363,8 @@ static u8 bnx2x_848xx_read_status(struct bnx2x_phy *phy,
LINK_STATUS_LINK_PARTNER_10GXFD_CAPABLE;
/* Determine if EEE was negotiated */
- if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833) {
- u32 eee_shmem = 0;
-
- bnx2x_cl45_read(bp, phy, MDIO_AN_DEVAD,
- MDIO_AN_REG_EEE_ADV, &val1);
- bnx2x_cl45_read(bp, phy, MDIO_AN_DEVAD,
- MDIO_AN_REG_LP_EEE_ADV, &val2);
- if ((val1 & val2) & 0x8) {
- DP(NETIF_MSG_LINK, "EEE negotiated\n");
- vars->eee_status |= SHMEM_EEE_ACTIVE_BIT;
- }
-
- if (val2 & 0x12)
- eee_shmem |= SHMEM_EEE_100M_ADV;
- if (val2 & 0x4)
- eee_shmem |= SHMEM_EEE_1G_ADV;
- if (val2 & 0x68)
- eee_shmem |= SHMEM_EEE_10G_ADV;
-
- vars->eee_status &= ~SHMEM_EEE_LP_ADV_STATUS_MASK;
- vars->eee_status |= (eee_shmem <<
- SHMEM_EEE_LP_ADV_STATUS_SHIFT);
- }
+ if (phy->type == PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84833)
+ bnx2x_eee_an_resolve(phy, params, vars);
}
return link_up;
--
1.7.9.rc2
--
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