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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlxsw/minimal.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlxsw/minimal.c760
1 files changed, 760 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
new file mode 100644
index 000000000..15116d930
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -0,0 +1,760 @@
+// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
+/* Copyright (c) 2016-2019 Mellanox Technologies. All rights reserved */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/types.h>
+
+#include "core.h"
+#include "core_env.h"
+#include "i2c.h"
+
+static const char mlxsw_m_driver_name[] = "mlxsw_minimal";
+
+#define MLXSW_M_FWREV_MINOR 2000
+#define MLXSW_M_FWREV_SUBMINOR 1886
+
+static const struct mlxsw_fw_rev mlxsw_m_fw_rev = {
+ .minor = MLXSW_M_FWREV_MINOR,
+ .subminor = MLXSW_M_FWREV_SUBMINOR,
+};
+
+struct mlxsw_m_port;
+
+struct mlxsw_m_line_card {
+ bool active;
+ int module_to_port[];
+};
+
+struct mlxsw_m {
+ struct mlxsw_m_port **ports;
+ 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 {
+ struct net_device *dev;
+ struct mlxsw_m *mlxsw_m;
+ u16 local_port;
+ u8 slot_index;
+ u8 module;
+ u8 module_offset;
+};
+
+static int mlxsw_m_base_mac_get(struct mlxsw_m *mlxsw_m)
+{
+ char spad_pl[MLXSW_REG_SPAD_LEN] = {0};
+ int err;
+
+ err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(spad), spad_pl);
+ if (err)
+ return err;
+ mlxsw_reg_spad_base_mac_memcpy_from(spad_pl, mlxsw_m->base_mac);
+ return 0;
+}
+
+static int mlxsw_m_port_open(struct net_device *dev)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
+ struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
+
+ return mlxsw_env_module_port_up(mlxsw_m->core, 0,
+ mlxsw_m_port->module);
+}
+
+static int mlxsw_m_port_stop(struct net_device *dev)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
+ struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
+
+ mlxsw_env_module_port_down(mlxsw_m->core, 0, mlxsw_m_port->module);
+ return 0;
+}
+
+static struct devlink_port *
+mlxsw_m_port_get_devlink_port(struct net_device *dev)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
+ struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
+
+ return mlxsw_core_port_devlink_port_get(mlxsw_m->core,
+ mlxsw_m_port->local_port);
+}
+
+static const struct net_device_ops mlxsw_m_port_netdev_ops = {
+ .ndo_open = mlxsw_m_port_open,
+ .ndo_stop = mlxsw_m_port_stop,
+ .ndo_get_devlink_port = mlxsw_m_port_get_devlink_port,
+};
+
+static void mlxsw_m_module_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(dev);
+ struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
+
+ strscpy(drvinfo->driver, mlxsw_m->bus_info->device_kind,
+ sizeof(drvinfo->driver));
+ snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
+ "%d.%d.%d",
+ mlxsw_m->bus_info->fw_rev.major,
+ mlxsw_m->bus_info->fw_rev.minor,
+ mlxsw_m->bus_info->fw_rev.subminor);
+ strscpy(drvinfo->bus_info, mlxsw_m->bus_info->device_name,
+ sizeof(drvinfo->bus_info));
+}
+
+static int mlxsw_m_get_module_info(struct net_device *netdev,
+ struct ethtool_modinfo *modinfo)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
+ struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
+
+ return mlxsw_env_get_module_info(netdev, core,
+ mlxsw_m_port->slot_index,
+ mlxsw_m_port->module, modinfo);
+}
+
+static int
+mlxsw_m_get_module_eeprom(struct net_device *netdev, struct ethtool_eeprom *ee,
+ u8 *data)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
+ struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
+
+ return mlxsw_env_get_module_eeprom(netdev, core,
+ mlxsw_m_port->slot_index,
+ mlxsw_m_port->module, ee, data);
+}
+
+static int
+mlxsw_m_get_module_eeprom_by_page(struct net_device *netdev,
+ const struct ethtool_module_eeprom *page,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
+ struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
+
+ return mlxsw_env_get_module_eeprom_by_page(core,
+ mlxsw_m_port->slot_index,
+ mlxsw_m_port->module,
+ page, extack);
+}
+
+static int mlxsw_m_reset(struct net_device *netdev, u32 *flags)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
+ struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
+
+ return mlxsw_env_reset_module(netdev, core, mlxsw_m_port->slot_index,
+ mlxsw_m_port->module,
+ flags);
+}
+
+static int
+mlxsw_m_get_module_power_mode(struct net_device *netdev,
+ struct ethtool_module_power_mode_params *params,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
+ struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
+
+ return mlxsw_env_get_module_power_mode(core, mlxsw_m_port->slot_index,
+ mlxsw_m_port->module,
+ params, extack);
+}
+
+static int
+mlxsw_m_set_module_power_mode(struct net_device *netdev,
+ const struct ethtool_module_power_mode_params *params,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_m_port *mlxsw_m_port = netdev_priv(netdev);
+ struct mlxsw_core *core = mlxsw_m_port->mlxsw_m->core;
+
+ return mlxsw_env_set_module_power_mode(core, mlxsw_m_port->slot_index,
+ mlxsw_m_port->module,
+ params->policy, extack);
+}
+
+static const struct ethtool_ops mlxsw_m_port_ethtool_ops = {
+ .get_drvinfo = mlxsw_m_module_get_drvinfo,
+ .get_module_info = mlxsw_m_get_module_info,
+ .get_module_eeprom = mlxsw_m_get_module_eeprom,
+ .get_module_eeprom_by_page = mlxsw_m_get_module_eeprom_by_page,
+ .reset = mlxsw_m_reset,
+ .get_module_power_mode = mlxsw_m_get_module_power_mode,
+ .set_module_power_mode = mlxsw_m_set_module_power_mode,
+};
+
+static int
+mlxsw_m_port_module_info_get(struct mlxsw_m *mlxsw_m, u16 local_port,
+ u8 *p_module, u8 *p_width, u8 *p_slot_index)
+{
+ char pmlp_pl[MLXSW_REG_PMLP_LEN];
+ int err;
+
+ mlxsw_reg_pmlp_pack(pmlp_pl, local_port);
+ err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(pmlp), pmlp_pl);
+ if (err)
+ 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;
+}
+
+static int
+mlxsw_m_port_dev_addr_get(struct mlxsw_m_port *mlxsw_m_port)
+{
+ struct mlxsw_m *mlxsw_m = mlxsw_m_port->mlxsw_m;
+ char ppad_pl[MLXSW_REG_PPAD_LEN];
+ u8 addr[ETH_ALEN];
+ int err;
+
+ mlxsw_reg_ppad_pack(ppad_pl, false, 0);
+ err = mlxsw_reg_query(mlxsw_m->core, MLXSW_REG(ppad), ppad_pl);
+ if (err)
+ return err;
+ mlxsw_reg_ppad_mac_memcpy_from(ppad_pl, addr);
+ eth_hw_addr_gen(mlxsw_m_port->dev, addr, mlxsw_m_port->module + 1 +
+ mlxsw_m_port->module_offset);
+ 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)
+{
+ struct mlxsw_m_port *mlxsw_m_port;
+ struct net_device *dev;
+ int err;
+
+ err = mlxsw_core_port_init(mlxsw_m->core, local_port, slot_index,
+ module + 1, false, 0, false,
+ 0, mlxsw_m->base_mac,
+ sizeof(mlxsw_m->base_mac));
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Port %d: Failed to init core port\n",
+ local_port);
+ return err;
+ }
+
+ dev = alloc_etherdev(sizeof(struct mlxsw_m_port));
+ if (!dev) {
+ err = -ENOMEM;
+ goto err_alloc_etherdev;
+ }
+
+ SET_NETDEV_DEV(dev, mlxsw_m->bus_info->dev);
+ dev_net_set(dev, mlxsw_core_net(mlxsw_m->core));
+ mlxsw_m_port = netdev_priv(dev);
+ mlxsw_m_port->dev = dev;
+ mlxsw_m_port->mlxsw_m = mlxsw_m;
+ mlxsw_m_port->local_port = local_port;
+ mlxsw_m_port->module = module;
+ mlxsw_m_port->slot_index = slot_index;
+ /* Add module offset for line card. Offset for main board iz zero.
+ * For line card in slot #n offset is calculated as (#n - 1)
+ * multiplied by maximum modules number, which could be found on a line
+ * card.
+ */
+ mlxsw_m_port->module_offset = mlxsw_m_port->slot_index ?
+ (mlxsw_m_port->slot_index - 1) *
+ mlxsw_m->max_modules_per_slot : 0;
+
+ dev->netdev_ops = &mlxsw_m_port_netdev_ops;
+ dev->ethtool_ops = &mlxsw_m_port_ethtool_ops;
+
+ err = mlxsw_m_port_dev_addr_get(mlxsw_m_port);
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Port %d: Unable to get port mac address\n",
+ mlxsw_m_port->local_port);
+ goto err_dev_addr_get;
+ }
+
+ netif_carrier_off(dev);
+ mlxsw_m->ports[local_port] = mlxsw_m_port;
+ err = register_netdev(dev);
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Port %d: Failed to register netdev\n",
+ mlxsw_m_port->local_port);
+ goto err_register_netdev;
+ }
+
+ mlxsw_core_port_eth_set(mlxsw_m->core, mlxsw_m_port->local_port,
+ mlxsw_m_port, dev);
+
+ return 0;
+
+err_register_netdev:
+ mlxsw_m->ports[local_port] = NULL;
+err_dev_addr_get:
+ free_netdev(dev);
+err_alloc_etherdev:
+ mlxsw_core_port_fini(mlxsw_m->core, local_port);
+ return err;
+}
+
+static void mlxsw_m_port_remove(struct mlxsw_m *mlxsw_m, u16 local_port)
+{
+ struct mlxsw_m_port *mlxsw_m_port = mlxsw_m->ports[local_port];
+
+ mlxsw_core_port_clear(mlxsw_m->core, local_port, mlxsw_m);
+ unregister_netdev(mlxsw_m_port->dev); /* This calls ndo_stop */
+ mlxsw_m->ports[local_port] = NULL;
+ free_netdev(mlxsw_m_port->dev);
+ 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, 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, &slot_index);
+ if (err)
+ return err;
+
+ /* Skip if line card has been already configured */
+ if (mlxsw_m->line_cards[slot_index]->active)
+ return 0;
+ if (!width)
+ return 0;
+ /* Skip, if port belongs to the cluster */
+ if (module == *last_module)
+ return 0;
+ *last_module = module;
+
+ if (WARN_ON_ONCE(module >= max_ports))
+ return -EINVAL;
+ 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;
+}
+
+static void
+mlxsw_m_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index, u8 module)
+{
+ 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);
+ 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->line_cards = kcalloc(mlxsw_m->num_of_slots,
+ sizeof(*mlxsw_m->line_cards),
+ GFP_KERNEL);
+ if (!mlxsw_m->line_cards) {
+ err = -ENOMEM;
+ 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]) {
+ err = -ENOMEM;
+ 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;
+ }
+
+ return 0;
+
+err_kmalloc_array:
+ for (i--; i >= 0; i--)
+ kfree(mlxsw_m->line_cards[i]);
+ kfree(mlxsw_m->line_cards);
+err_kcalloc:
+ kfree(mlxsw_m->ports);
+ return err;
+}
+
+static void mlxsw_m_linecards_fini(struct mlxsw_m *mlxsw_m)
+{
+ 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 void
+mlxsw_m_linecard_port_module_unmap(struct mlxsw_m *mlxsw_m, u8 slot_index)
+{
+ int i;
+
+ 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);
+ }
+}
+
+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_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_port_create:
+ for (i--; i >= 0; 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;
+ }
+ }
+ return err;
+}
+
+static void
+mlxsw_m_linecard_ports_remove(struct mlxsw_m *mlxsw_m, u8 slot_index)
+{
+ int 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);
+ }
+ }
+}
+
+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 void
+mlxsw_m_ports_remove_selected(struct mlxsw_core *mlxsw_core,
+ bool (*selector)(void *priv, u16 local_port),
+ void *priv)
+{
+ struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core);
+ struct mlxsw_linecard *linecard_priv = priv;
+ struct mlxsw_m_line_card *linecard;
+
+ linecard = mlxsw_m->line_cards[linecard_priv->slot_index];
+
+ if (WARN_ON(!linecard->active))
+ return;
+
+ mlxsw_m_linecard_ports_remove(mlxsw_m, linecard_priv->slot_index);
+ linecard->active = false;
+}
+
+static int mlxsw_m_fw_rev_validate(struct mlxsw_m *mlxsw_m)
+{
+ const struct mlxsw_fw_rev *rev = &mlxsw_m->bus_info->fw_rev;
+
+ /* Validate driver and FW are compatible.
+ * Do not check major version, since it defines chip type, while
+ * driver is supposed to support any type.
+ */
+ if (mlxsw_core_fw_rev_minor_subminor_validate(rev, &mlxsw_m_fw_rev))
+ return 0;
+
+ dev_err(mlxsw_m->bus_info->dev, "The firmware version %d.%d.%d is incompatible with the driver (required >= %d.%d.%d)\n",
+ rev->major, rev->minor, rev->subminor, rev->major,
+ mlxsw_m_fw_rev.minor, mlxsw_m_fw_rev.subminor);
+
+ return -EINVAL;
+}
+
+static void
+mlxsw_m_got_active(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv)
+{
+ struct mlxsw_m_line_card *linecard;
+ struct mlxsw_m *mlxsw_m = priv;
+ int err;
+
+ linecard = mlxsw_m->line_cards[slot_index];
+ /* Skip if line card has been already configured during init */
+ if (linecard->active)
+ return;
+
+ /* 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, slot_index);
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Failed to create port for line card at slot %d\n",
+ slot_index);
+ goto err_linecard_ports_create;
+ }
+
+ linecard->active = true;
+
+ return;
+
+err_linecard_ports_create:
+err_ports_module_map:
+ mlxsw_m_linecard_port_module_unmap(mlxsw_m, slot_index);
+}
+
+static void
+mlxsw_m_got_inactive(struct mlxsw_core *mlxsw_core, u8 slot_index, void *priv)
+{
+ struct mlxsw_m_line_card *linecard;
+ struct mlxsw_m *mlxsw_m = priv;
+
+ linecard = mlxsw_m->line_cards[slot_index];
+
+ if (WARN_ON(!linecard->active))
+ return;
+
+ mlxsw_m_linecard_ports_remove(mlxsw_m, slot_index);
+ linecard->active = false;
+}
+
+static struct mlxsw_linecards_event_ops mlxsw_m_event_ops = {
+ .got_active = mlxsw_m_got_active,
+ .got_inactive = mlxsw_m_got_inactive,
+};
+
+static int mlxsw_m_init(struct mlxsw_core *mlxsw_core,
+ const struct mlxsw_bus_info *mlxsw_bus_info,
+ struct netlink_ext_ack *extack)
+{
+ struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core);
+ int err;
+
+ mlxsw_m->core = mlxsw_core;
+ mlxsw_m->bus_info = mlxsw_bus_info;
+
+ err = mlxsw_m_fw_rev_validate(mlxsw_m);
+ if (err)
+ return err;
+
+ err = mlxsw_m_base_mac_get(mlxsw_m);
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Failed to get base mac\n");
+ return err;
+ }
+
+ err = mlxsw_m_linecards_init(mlxsw_m);
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Failed to create line cards\n");
+ return err;
+ }
+
+ err = mlxsw_linecards_event_ops_register(mlxsw_core,
+ &mlxsw_m_event_ops, mlxsw_m);
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Failed to register line cards operations\n");
+ goto linecards_event_ops_register;
+ }
+
+ err = mlxsw_m_ports_create(mlxsw_m);
+ if (err) {
+ dev_err(mlxsw_m->bus_info->dev, "Failed to create ports\n");
+ goto err_ports_create;
+ }
+
+ return 0;
+
+err_ports_create:
+ mlxsw_linecards_event_ops_unregister(mlxsw_core,
+ &mlxsw_m_event_ops, mlxsw_m);
+linecards_event_ops_register:
+ mlxsw_m_linecards_fini(mlxsw_m);
+ return err;
+}
+
+static void mlxsw_m_fini(struct mlxsw_core *mlxsw_core)
+{
+ struct mlxsw_m *mlxsw_m = mlxsw_core_driver_priv(mlxsw_core);
+
+ mlxsw_m_ports_remove(mlxsw_m);
+ mlxsw_linecards_event_ops_unregister(mlxsw_core,
+ &mlxsw_m_event_ops, mlxsw_m);
+ mlxsw_m_linecards_fini(mlxsw_m);
+}
+
+static const struct mlxsw_config_profile mlxsw_m_config_profile;
+
+static struct mlxsw_driver mlxsw_m_driver = {
+ .kind = mlxsw_m_driver_name,
+ .priv_size = sizeof(struct mlxsw_m),
+ .init = mlxsw_m_init,
+ .fini = mlxsw_m_fini,
+ .ports_remove_selected = mlxsw_m_ports_remove_selected,
+ .profile = &mlxsw_m_config_profile,
+};
+
+static const struct i2c_device_id mlxsw_m_i2c_id[] = {
+ { "mlxsw_minimal", 0},
+ { },
+};
+
+static struct i2c_driver mlxsw_m_i2c_driver = {
+ .driver.name = "mlxsw_minimal",
+ .class = I2C_CLASS_HWMON,
+ .id_table = mlxsw_m_i2c_id,
+};
+
+static int __init mlxsw_m_module_init(void)
+{
+ int err;
+
+ err = mlxsw_core_driver_register(&mlxsw_m_driver);
+ if (err)
+ return err;
+
+ err = mlxsw_i2c_driver_register(&mlxsw_m_i2c_driver);
+ if (err)
+ goto err_i2c_driver_register;
+
+ return 0;
+
+err_i2c_driver_register:
+ mlxsw_core_driver_unregister(&mlxsw_m_driver);
+
+ return err;
+}
+
+static void __exit mlxsw_m_module_exit(void)
+{
+ mlxsw_i2c_driver_unregister(&mlxsw_m_i2c_driver);
+ mlxsw_core_driver_unregister(&mlxsw_m_driver);
+}
+
+module_init(mlxsw_m_module_init);
+module_exit(mlxsw_m_module_exit);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
+MODULE_DESCRIPTION("Mellanox minimal driver");
+MODULE_DEVICE_TABLE(i2c, mlxsw_m_i2c_id);