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-rw-r--r--drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h4
-rw-r--r--drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c25
2 files changed, 27 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
index 06df560e1ade..058bc7328220 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
@@ -2258,8 +2258,8 @@ struct shmem2_region {
#define LINK_SFP_EEPROM_COMP_CODE_LRM 0x00004000
u32 reserved5[2];
- u32 reserved6[PORT_MAX];
-
+ u32 link_change_count[PORT_MAX]; /* Offset 0x160-0x164 */
+ #define LINK_CHANGE_COUNT_MASK 0xff /* Offset 0x168 */
/* driver version for each personality */
struct os_drv_ver func_os_drv_ver[E2_FUNC_MAX]; /* Offset 0x16c */
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index a5b174345ce4..21a0d6afca4a 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -6758,6 +6758,25 @@ static int bnx2x_update_link_up(struct link_params *params,
msleep(20);
return rc;
}
+
+static void bnx2x_chng_link_count(struct link_params *params, bool clear)
+{
+ struct bnx2x *bp = params->bp;
+ u32 addr, val;
+
+ /* Verify the link_change_count is supported by the MFW */
+ if (!(SHMEM2_HAS(bp, link_change_count)))
+ return;
+
+ addr = params->shmem2_base +
+ offsetof(struct shmem2_region, link_change_count[params->port]);
+ if (clear)
+ val = 0;
+ else
+ val = REG_RD(bp, addr) + 1;
+ REG_WR(bp, addr, val);
+}
+
/* The bnx2x_link_update function should be called upon link
* interrupt.
* Link is considered up as follows:
@@ -6776,6 +6795,7 @@ int bnx2x_link_update(struct link_params *params, struct link_vars *vars)
struct link_vars phy_vars[MAX_PHYS];
u8 port = params->port;
u8 link_10g_plus, phy_index;
+ u32 prev_link_status = vars->link_status;
u8 ext_phy_link_up = 0, cur_link_up;
int rc = 0;
u8 is_mi_int = 0;
@@ -7015,6 +7035,9 @@ int bnx2x_link_update(struct link_params *params, struct link_vars *vars)
else
rc = bnx2x_update_link_down(params, vars);
+ if ((prev_link_status ^ vars->link_status) & LINK_STATUS_LINK_UP)
+ bnx2x_chng_link_count(params, false);
+
/* Update MCP link status was changed */
if (params->feature_config_flags & FEATURE_CONFIG_BC_SUPPORTS_AFEX)
bnx2x_fw_command(bp, DRV_MSG_CODE_LINK_STATUS_CHANGED, 0);
@@ -12658,6 +12681,7 @@ int bnx2x_phy_init(struct link_params *params, struct link_vars *vars)
params->link_flags = PHY_INITIALIZED;
/* Driver opens NIG-BRB filters */
bnx2x_set_rx_filter(params, 1);
+ bnx2x_chng_link_count(params, true);
/* Check if link flap can be avoided */
lfa_status = bnx2x_check_lfa(params);
@@ -12732,6 +12756,7 @@ int bnx2x_link_reset(struct link_params *params, struct link_vars *vars,
DP(NETIF_MSG_LINK, "Resetting the link of port %d\n", port);
/* Disable attentions */
vars->link_status = 0;
+ bnx2x_chng_link_count(params, true);
bnx2x_update_mng(params, vars->link_status);
vars->eee_status &= ~(SHMEM_EEE_LP_ADV_STATUS_MASK |
SHMEM_EEE_ACTIVE_BIT);