diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index f8dee111d25b2..7fc5ebb8e0ba8 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -26,13 +26,20 @@ static const struct mlxsw_fw_rev mlxsw_m_fw_rev = {
struct mlxsw_m_port;
+struct mlxsw_m_line_card {
+ bool active;
+ int module_to_port[];
+};
+
struct mlxsw_m {
struct mlxsw_m_port **ports;
- int *module_to_port;
struct mlxsw_core *core;
const struct mlxsw_bus_info *bus_info;
u8 base_mac[ETH_ALEN];
u8 max_ports;
+ u8 max_modules_per_slot; /* Maximum number of modules per-slot. */
+ u8 num_of_slots; /* Including the main board. */
+ struct mlxsw_m_line_card **line_cards;
};
struct mlxsw_m_port {
@@ -191,7 +198,7 @@ static const struct ethtool_ops mlxsw_m_port_ethtool_ops = {
static int
mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port,
- u8 *p_module, u8 *p_width)
+ u8 *p_module, u8 *p_width, u8 *p_slot_index)
{
char pmlp_pl[MLXSW_REG_PMLP_LEN];
int err;
@@ -202,6 +209,7 @@ mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port,
return err;
*p_module = mlxsw_reg_pmlp_module_get(pmlp_pl, 0);
*p_width = mlxsw_reg_pmlp_width_get(pmlp_pl);
+ *p_slot_index = mlxsw_reg_pmlp_slot_index_get(pmlp_pl, 0);
return 0;
}
@@ -223,6 +231,11 @@ mlxsw_m_port_dev_addr_get(struct mlxsw_m_port *mlxsw_m_port)
return 0;
}
+static bool mlxsw_m_port_created(struct mlxsw_m *mlxsw_m, u16 local_port)
+{
+ return mlxsw_m->ports[local_port];
+}
+
static int
mlxsw_m_port_create(struct mlxsw_m *mlxsw_m, u16 local_port, u8 slot_index,
u8 module)
@@ -300,16 +313,23 @@ static void mlxsw_m_port_remove(struct mlxsw_m *mlxsw_m, u16 local_port)
mlxsw_core_port_fini(mlxsw_m->core, local_port);
}
+static int*
+mlxsw_m_port_mapping_get(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module)
+{
+ return &mlxsw_m->line_cards[slot_index]->module_to_port[module];
+}
+
static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port,
u8 *last_module)
{
unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
- u8 module, width;
+ u8 module, width, slot_index;
+ int *module_to_port;
int err;
/* Fill out to local port mapping array */
err = mlxsw_m_port_module_info_get(mlxsw_m, local_port, &module,
- &width);
+ &width, &slot_index);
if (err)
return err;
@@ -322,8 +342,9 @@ static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port,
if (WARN_ON_ONCE(module >= max_ports))
return -EINVAL;
- mlxsw_env_module_port_map(mlxsw_m->core, 0, module);
- mlxsw_m->module_to_port[module] = ++mlxsw_m->max_ports;
+ mlxsw_env_module_port_map(mlxsw_m->core, slot_index, module);
+ module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, module);
+ *module_to_port = local_port;
return 0;
}
@@ -331,98 +352,188 @@ static int mlxsw_m_port_module_map(struct mlxsw_m *mlxsw_m, u16 local_port,
static void
mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module)
{
- mlxsw_m->module_to_port[module] = -1;
+ int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index,
+ module);
+ *module_to_port = -1;
mlxsw_env_module_port_unmap(mlxsw_m->core, slot_index, module);
}
static int mlxsw_m_linecards_init(struct mlxsw_m *mlxsw_m)
{
unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
- int i, err;
+ char mgpir_pl[MLXSW_REG_MGPIR_LEN];
+ u8 num_of_modules;
+ int i, j, err;
+
+ mlxsw_reg_mgpir_pack(mgpir_pl, 0);
+ err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(mgpir), mgpir_pl);
+ if (err)
+ return err;
+
+ mlxsw_reg_mgpir_unpack(mgpir_pl, NULL, NULL, NULL, &num_of_modules,
+ &mlxsw_m->num_of_slots);
+ /* If the system is modular, get the maximum number of modules per-slot.
+ * Otherwise, get the maximum number of modules on the main board.
+ */
+ if (mlxsw_m->num_of_slots)
+ mlxsw_m->max_modules_per_slot =
+ mlxsw_reg_mgpir_max_modules_per_slot_get(mgpir_pl);
+ else
+ mlxsw_m->max_modules_per_slot = num_of_modules;
+ /* Add slot for main board. */
+ mlxsw_m->num_of_slots += 1;
mlxsw_m->ports = kcalloc(max_ports, sizeof(*mlxsw_m->ports),
GFP_KERNEL);
if (!mlxsw_m->ports)
return -ENOMEM;
- mlxsw_m->module_to_port = kmalloc_array(max_ports, sizeof(int),
- GFP_KERNEL);
- if (!mlxsw_m->module_to_port) {
- err = -ENOMEM;
- goto err_module_to_port_alloc;
+ mlxsw_m->line_cards = kcalloc(mlxsw_m->num_of_slots,
+ sizeof(*mlxsw_m->line_cards),
+ GFP_KERNEL);
+ if (!mlxsw_m->line_cards)
+ goto err_kcalloc;
+
+ for (i = 0; i < mlxsw_m->num_of_slots; i++) {
+ mlxsw_m->line_cards[i] =
+ kzalloc(struct_size(mlxsw_m->line_cards[i],
+ module_to_port,
+ mlxsw_m->max_modules_per_slot),
+ GFP_KERNEL);
+ if (!mlxsw_m->line_cards[i])
+ goto err_kmalloc_array;
+
+ /* Invalidate the entries of module to local port mapping array. */
+ for (j = 0; j < mlxsw_m->max_modules_per_slot; j++)
+ mlxsw_m->line_cards[i]->module_to_port[j] = -1;
}
- /* Invalidate the entries of module to local port mapping array */
- for (i = 0; i < max_ports; i++)
- mlxsw_m->module_to_port[i] = -1;
-
return 0;
-err_module_to_port_alloc:
+err_kmalloc_array:
+ for (i--; i >= 0; i--)
+ kfree(mlxsw_m->line_cards[i]);
+err_kcalloc:
kfree(mlxsw_m->ports);
return err;
}
static void mlxsw_m_linecards_fini(struct mlxsw_m *mlxsw_m)
{
- kfree(mlxsw_m->module_to_port);
+ int i = mlxsw_m->num_of_slots;
+
+ for (i--; i >= 0; i--)
+ kfree(mlxsw_m->line_cards[i]);
+ kfree(mlxsw_m->line_cards);
kfree(mlxsw_m->ports);
}
-static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
+static void
+mlxsw_m_linecard_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index)
{
- unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
- u8 last_module = max_ports;
int i;
- int err;
- /* Fill out module to local port mapping array */
- for (i = 1; i < max_ports; i++) {
- err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module);
- if (err)
- goto err_module_to_port_map;
+ for (i = mlxsw_m->max_modules_per_slot - 1; i >= 0; i--) {
+ int *module_to_port;
+
+ module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i);
+ if (*module_to_port > 0)
+ mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i);
}
+}
- /* Create port objects for each valid entry */
- for (i = 0; i < mlxsw_m->max_ports; i++) {
- if (mlxsw_m->module_to_port[i] > 0) {
- err = mlxsw_m_port_create(mlxsw_m,
- mlxsw_m->module_to_port[i],
- 0, i);
+static int
+mlxsw_m_linecard_ports_create(struct mlxsw_m *mlxsw_m, u8 slot_index)
+{
+ int *module_to_port;
+ int i, err;
+
+ for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) {
+ module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i);
+ if (*module_to_port > 0) {
+ err = mlxsw_m_port_create(mlxsw_m, *module_to_port,
+ slot_index, i);
if (err)
- goto err_module_to_port_create;
+ goto err_port_create;
+ /* Mark slot as active */
+ if (!mlxsw_m->line_cards[slot_index]->active)
+ mlxsw_m->line_cards[slot_index]->active = true;
}
}
-
return 0;
-err_module_to_port_create:
+err_port_create:
for (i--; i >= 0; i--) {
- if (mlxsw_m->module_to_port[i] > 0)
- mlxsw_m_port_remove(mlxsw_m,
- mlxsw_m->module_to_port[i]);
+ module_to_port = mlxsw_m_port_mapping_get(mlxsw_m, slot_index, i);
+ if (*module_to_port > 0 &&
+ mlxsw_m_port_created(mlxsw_m, *module_to_port)) {
+ mlxsw_m_port_remove(mlxsw_m, *module_to_port);
+ /* Mark slot as inactive */
+ if (mlxsw_m->line_cards[slot_index]->active)
+ mlxsw_m->line_cards[slot_index]->active = false;
+ }
}
- i = max_ports;
-err_module_to_port_map:
- for (i--; i > 0; i--)
- mlxsw_m_port_module_unmap(mlxsw_m, 0, i);
return err;
}
-static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m)
+static void
+mlxsw_m_linecard_ports_remove(struct mlxsw_m *mlxsw_m, u8 slot_index)
{
int i;
- for (i = 0; i < mlxsw_m->max_ports; i++) {
- if (mlxsw_m->module_to_port[i] > 0) {
- mlxsw_m_port_remove(mlxsw_m,
- mlxsw_m->module_to_port[i]);
- mlxsw_m_port_module_unmap(mlxsw_m, 0, i);
+ for (i = 0; i < mlxsw_m->max_modules_per_slot; i++) {
+ int *module_to_port = mlxsw_m_port_mapping_get(mlxsw_m,
+ slot_index, i);
+
+ if (*module_to_port > 0 &&
+ mlxsw_m_port_created(mlxsw_m, *module_to_port)) {
+ mlxsw_m_port_remove(mlxsw_m, *module_to_port);
+ mlxsw_m_port_module_unmap(mlxsw_m, slot_index, i);
}
}
+}
- kfree(mlxsw_m->module_to_port);
- kfree(mlxsw_m->ports);
+static int mlxsw_m_ports_module_map(struct mlxsw_m *mlxsw_m)
+{
+ unsigned int max_ports = mlxsw_core_max_ports(mlxsw_m->core);
+ u8 last_module = max_ports;
+ int i, err;
+
+ for (i = 1; i < max_ports; i++) {
+ err = mlxsw_m_port_module_map(mlxsw_m, i, &last_module);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static int mlxsw_m_ports_create(struct mlxsw_m *mlxsw_m)
+{
+ int err;
+
+ /* Fill out module to local port mapping array */
+ err = mlxsw_m_ports_module_map(mlxsw_m);
+ if (err)
+ goto err_ports_module_map;
+
+ /* Create port objects for each valid entry */
+ err = mlxsw_m_linecard_ports_create(mlxsw_m, 0);
+ if (err)
+ goto err_linecard_ports_create;
+
+ return 0;
+
+err_linecard_ports_create:
+err_ports_module_map:
+ mlxsw_m_linecard_port_module_unmap(mlxsw_m, 0);
+
+ return err;
+}
+
+static void mlxsw_m_ports_remove(struct mlxsw_m *mlxsw_m)
+{
+ mlxsw_m_linecard_ports_remove(mlxsw_m, 0);
}
static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m)