iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

bnx2x: Count number of link changes

Browse Source 
Number of link changes are now being stored in shared memory [by all possible
link owners], for management use [as well as possible debug information for
dumps].

Signed-off-by: Yaniv Rosner <Yaniv.Rosner@qlogic.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yaniv Rosner 2015-03-29 10:05:00 +03:00 committed by David S. Miller
parent 30fd9ff0d9
commit fcd02d27b5
2 changed files with 27 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/broadcom/bnx2x/bnx2x_hsi.h
View File

@ -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 */

25
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
View File

@ -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);