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Date: Tue, 30 Aug 2016 14:29:55 +0300
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Huy Nguyen <huyn@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [PATCH net-next 6/6] net/mlx5: Add handling for port module event
From: Huy Nguyen <huyn@...lanox.com>
Add dmesg log for asynchronous port module event.
Signed-off-by: Huy Nguyen <huyn@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/eq.c | 12 +++
.../net/ethernet/mellanox/mlx5/core/mlx5_core.h | 1 +
drivers/net/ethernet/mellanox/mlx5/core/port.c | 85 ++++++++++++++++++++++
include/linux/mlx5/device.h | 11 +++
include/linux/mlx5/mlx5_ifc.h | 3 +-
5 files changed, 111 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index aaca090..d775fea 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -139,6 +139,8 @@ static const char *eqe_type_str(u8 type)
return "MLX5_EVENT_TYPE_PORT_CHANGE";
case MLX5_EVENT_TYPE_GPIO_EVENT:
return "MLX5_EVENT_TYPE_GPIO_EVENT";
+ case MLX5_EVENT_TYPE_PORT_MODULE_EVENT:
+ return "MLX5_EVENT_TYPE_PORT_MODULE_EVENT";
case MLX5_EVENT_TYPE_REMOTE_CONFIG:
return "MLX5_EVENT_TYPE_REMOTE_CONFIG";
case MLX5_EVENT_TYPE_DB_BF_CONGESTION:
@@ -285,6 +287,11 @@ static int mlx5_eq_int(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
mlx5_eswitch_vport_event(dev->priv.eswitch, eqe);
break;
#endif
+
+ case MLX5_EVENT_TYPE_PORT_MODULE_EVENT:
+ mlx5_port_module_event(dev, eqe);
+ break;
+
default:
mlx5_core_warn(dev, "Unhandled event 0x%x on EQ 0x%x\n",
eqe->type, eq->eqn);
@@ -480,6 +487,11 @@ int mlx5_start_eqs(struct mlx5_core_dev *dev)
mlx5_core_is_pf(dev))
async_event_mask |= (1ull << MLX5_EVENT_TYPE_NIC_VPORT_CHANGE);
+ if (MLX5_CAP_GEN(dev, port_module_event))
+ async_event_mask |= (1ull << MLX5_EVENT_TYPE_PORT_MODULE_EVENT);
+ else
+ mlx5_core_dbg(dev, "port_module_event is not set\n");
+
err = mlx5_create_map_eq(dev, &table->cmd_eq, MLX5_EQ_VEC_CMD,
MLX5_NUM_CMD_EQE, 1ull << MLX5_EVENT_TYPE_CMD,
"mlx5_cmd_eq", &dev->priv.uuari.uars[0]);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index 714b71b..d023d05 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -87,6 +87,7 @@ int mlx5_cmd_init_hca(struct mlx5_core_dev *dev);
int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev);
void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event,
unsigned long param);
+void mlx5_port_module_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe);
void mlx5_enter_error_state(struct mlx5_core_dev *dev);
void mlx5_disable_device(struct mlx5_core_dev *dev);
int mlx5_core_sriov_configure(struct pci_dev *dev, int num_vfs);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c
index 8a66595..e5f62bb 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c
@@ -36,6 +36,25 @@
#include <linux/mlx5/cmd.h>
#include "mlx5_core.h"
+#define PORT_MODULE_EVENT_MODULE_STATUS_MASK 0xF
+#define PORT_MODULE_EVENT_ERROR_TYPE_MASK 0xF
+enum {
+ MLX5_MODULE_STATUS_PLUGGED = 0x1,
+ MLX5_MODULE_STATUS_UNPLUGGED = 0x2,
+ MLX5_MODULE_STATUS_ERROR = 0x3,
+};
+
+enum {
+ MLX5_MODULE_EVENT_ERROR_POWER_BUDGET_EXCEEDED = 0x0,
+ MLX5_MODULE_EVENT_ERROR_LONG_RANGE_FOR_NON_MLNX_CABLE_MODULE = 0x1,
+ MLX5_MODULE_EVENT_ERROR_BUS_STUCK = 0x2,
+ MLX5_MODULE_EVENT_ERROR_NO_EEPROM_RETRY_TIMEOUT = 0x3,
+ MLX5_MODULE_EVENT_ERROR_ENFORCE_PART_NUMBER_LIST = 0x4,
+ MLX5_MODULE_EVENT_ERROR_UNKNOWN_IDENTIFIER = 0x5,
+ MLX5_MODULE_EVENT_ERROR_HIGH_TEMPERATURE = 0x6,
+ MLX5_MODULE_EVENT_ERROR_BAD_CABLE = 0x7,
+};
+
int mlx5_core_access_reg(struct mlx5_core_dev *dev, void *data_in,
int size_in, void *data_out, int size_out,
u16 reg_id, int arg, int write)
@@ -811,3 +830,69 @@ void mlx5_query_port_fcs(struct mlx5_core_dev *mdev, bool *supported,
*supported = !!(MLX5_GET(pcmr_reg, out, fcs_cap));
*enabled = !!(MLX5_GET(pcmr_reg, out, fcs_chk));
}
+
+static const char *mlx5_port_event_error_type_to_string(u8 error_type)
+{
+ switch (error_type) {
+ case MLX5_MODULE_EVENT_ERROR_POWER_BUDGET_EXCEEDED:
+ return "Power Budget Exceeded";
+
+ case MLX5_MODULE_EVENT_ERROR_LONG_RANGE_FOR_NON_MLNX_CABLE_MODULE:
+ return "Long Range for non MLNX cable/module";
+
+ case MLX5_MODULE_EVENT_ERROR_BUS_STUCK:
+ return "Bus stuck(I2C or data shorted)";
+
+ case MLX5_MODULE_EVENT_ERROR_NO_EEPROM_RETRY_TIMEOUT:
+ return "No EEPROM/retry timeout";
+
+ case MLX5_MODULE_EVENT_ERROR_ENFORCE_PART_NUMBER_LIST:
+ return "Enforce part number list";
+
+ case MLX5_MODULE_EVENT_ERROR_UNKNOWN_IDENTIFIER:
+ return "Unknown identifier";
+
+ case MLX5_MODULE_EVENT_ERROR_HIGH_TEMPERATURE:
+ return "High Temperature";
+
+ case MLX5_MODULE_EVENT_ERROR_BAD_CABLE:
+ return "Bad cable (module/cable is shorted)";
+
+ default:
+ return "Unknown error type";
+ }
+}
+
+void mlx5_port_module_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe)
+{
+ struct mlx5_eqe_port_module *module_event_eqe;
+ u8 module_status;
+ u8 module_num;
+ u8 error_type;
+
+ module_event_eqe = &eqe->data.port_module;
+ module_num = module_event_eqe->module;
+ module_status = module_event_eqe->module_status &
+ PORT_MODULE_EVENT_MODULE_STATUS_MASK;
+ error_type = module_event_eqe->error_type &
+ PORT_MODULE_EVENT_ERROR_TYPE_MASK;
+
+ switch (module_status) {
+ case MLX5_MODULE_STATUS_PLUGGED:
+ mlx5_core_info(dev, "Module %u, status: plugged", module_num);
+ break;
+
+ case MLX5_MODULE_STATUS_UNPLUGGED:
+ mlx5_core_info(dev, "Module %u, status: unplugged", module_num);
+ break;
+
+ case MLX5_MODULE_STATUS_ERROR:
+ mlx5_core_info(dev, "Module %u, status: error, %s", module_num,
+ mlx5_port_event_error_type_to_string(error_type));
+ break;
+
+ default:
+ mlx5_core_info(dev, "Module %u, unknown module status %x",
+ module_num, module_status);
+ }
+}
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index 77c1417..3020b7f 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -268,6 +268,7 @@ enum mlx5_event {
MLX5_EVENT_TYPE_INTERNAL_ERROR = 0x08,
MLX5_EVENT_TYPE_PORT_CHANGE = 0x09,
MLX5_EVENT_TYPE_GPIO_EVENT = 0x15,
+ MLX5_EVENT_TYPE_PORT_MODULE_EVENT = 0x16,
MLX5_EVENT_TYPE_REMOTE_CONFIG = 0x19,
MLX5_EVENT_TYPE_DB_BF_CONGESTION = 0x1a,
@@ -543,6 +544,15 @@ struct mlx5_eqe_vport_change {
__be32 rsvd1[6];
} __packed;
+struct mlx5_eqe_port_module {
+ u8 rsvd0[1];
+ u8 module;
+ u8 rsvd1[1];
+ u8 module_status;
+ u8 rsvd2[2];
+ u8 error_type;
+};
+
union ev_data {
__be32 raw[7];
struct mlx5_eqe_cmd cmd;
@@ -556,6 +566,7 @@ union ev_data {
struct mlx5_eqe_page_req req_pages;
struct mlx5_eqe_page_fault page_fault;
struct mlx5_eqe_vport_change vport_change;
+ struct mlx5_eqe_port_module port_module;
} __packed;
struct mlx5_eqe {
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 73a720f..57eaee3 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -804,7 +804,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 early_vf_enable[0x1];
u8 reserved_at_1a9[0x2];
u8 local_ca_ack_delay[0x5];
- u8 reserved_at_1af[0x2];
+ u8 port_module_event[0x1];
+ u8 reserved_at_1b0[0x1];
u8 ports_check[0x1];
u8 reserved_at_1b2[0x1];
u8 disable_link_up[0x1];
--
2.7.4
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