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Merge branch 'mlxsw-Two-port-module-fixes'

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Ido Schimmel says:

====================
mlxsw: Two port module fixes

Patch #1 fixes driver initialization failure on old ASICs due to
unsupported register access. This is fixed by first testing if the
register is supported.

Patch #2 fixes reading of certain modules' EEPROM. The problem and
solution are explained in detail in the commit message.

Please consider both patches for stable.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-05-18 13:13:40 -07:00
commit ee8a2b95b7
5 changed files with 33 additions and 2 deletions
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6
drivers/net/ethernet/mellanox/mlxsw/core.c
View file

@ -122,6 +122,12 @@ void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core)
}
EXPORT_SYMBOL(mlxsw_core_driver_priv);
bool mlxsw_core_res_query_enabled(const struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->driver->res_query_enabled;
}
EXPORT_SYMBOL(mlxsw_core_res_query_enabled);
struct mlxsw_rx_listener_item {
struct list_head list;
struct mlxsw_rx_listener rxl;

2
drivers/net/ethernet/mellanox/mlxsw/core.h
View file

@ -28,6 +28,8 @@ unsigned int mlxsw_core_max_ports(const struct mlxsw_core *mlxsw_core);
void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core);
bool mlxsw_core_res_query_enabled(const struct mlxsw_core *mlxsw_core);
int mlxsw_core_driver_register(struct mlxsw_driver *mlxsw_driver);
void mlxsw_core_driver_unregister(struct mlxsw_driver *mlxsw_driver);

18
drivers/net/ethernet/mellanox/mlxsw/core_env.c
View file

@ -3,6 +3,7 @@
#include <linux/kernel.h>
#include <linux/err.h>
#include <linux/sfp.h>
#include "core.h"
#include "core_env.h"
@ -162,7 +163,7 @@ int mlxsw_env_get_module_info(struct mlxsw_core *mlxsw_core, int module,
{
u8 module_info[MLXSW_REG_MCIA_EEPROM_MODULE_INFO_SIZE];
u16 offset = MLXSW_REG_MCIA_EEPROM_MODULE_INFO_SIZE;
u8 module_rev_id, module_id;
u8 module_rev_id, module_id, diag_mon;
unsigned int read_size;
int err;
@ -195,8 +196,21 @@ int mlxsw_env_get_module_info(struct mlxsw_core *mlxsw_core, int module,
}
break;
case MLXSW_REG_MCIA_EEPROM_MODULE_INFO_ID_SFP:
/* Verify if transceiver provides diagnostic monitoring page */
err = mlxsw_env_query_module_eeprom(mlxsw_core, module,
SFP_DIAGMON, 1, &diag_mon,
&read_size);
if (err)
return err;
if (read_size < 1)
return -EIO;
modinfo->type = ETH_MODULE_SFF_8472;
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
if (diag_mon)
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
else
modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN / 2;
break;
default:
return -EINVAL;

3
drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c
View file

@ -518,6 +518,9 @@ static int mlxsw_hwmon_module_init(struct mlxsw_hwmon *mlxsw_hwmon)
u8 width;
int err;
if (!mlxsw_core_res_query_enabled(mlxsw_hwmon->core))
return 0;
/* Add extra attributes for module temperature. Sensor index is
* assigned to sensor_count value, while all indexed before
* sensor_count are already utilized by the sensors connected through

6
drivers/net/ethernet/mellanox/mlxsw/core_thermal.c
View file

@ -740,6 +740,9 @@ mlxsw_thermal_modules_init(struct device *dev, struct mlxsw_core *core,
struct mlxsw_thermal_module *module_tz;
int i, err;
if (!mlxsw_core_res_query_enabled(core))
return 0;
thermal->tz_module_arr = kcalloc(module_count,
sizeof(*thermal->tz_module_arr),
GFP_KERNEL);
@ -776,6 +779,9 @@ mlxsw_thermal_modules_fini(struct mlxsw_thermal *thermal)
unsigned int module_count = mlxsw_core_max_ports(thermal->core);
int i;
if (!mlxsw_core_res_query_enabled(thermal->core))
return;
for (i = module_count - 1; i >= 0; i--)
mlxsw_thermal_module_fini(&thermal->tz_module_arr[i]);
kfree(thermal->tz_module_arr);