| // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
| /* Copyright (c) 2015-2018 Mellanox Technologies. All rights reserved */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/device.h> |
| #include <linux/export.h> |
| #include <linux/err.h> |
| #include <linux/if_link.h> |
| #include <linux/netdevice.h> |
| #include <linux/completion.h> |
| #include <linux/skbuff.h> |
| #include <linux/etherdevice.h> |
| #include <linux/types.h> |
| #include <linux/string.h> |
| #include <linux/gfp.h> |
| #include <linux/random.h> |
| #include <linux/jiffies.h> |
| #include <linux/mutex.h> |
| #include <linux/rcupdate.h> |
| #include <linux/slab.h> |
| #include <linux/workqueue.h> |
| #include <linux/firmware.h> |
| #include <asm/byteorder.h> |
| #include <net/devlink.h> |
| #include <trace/events/devlink.h> |
| |
| #include "core.h" |
| #include "core_env.h" |
| #include "item.h" |
| #include "cmd.h" |
| #include "port.h" |
| #include "trap.h" |
| #include "emad.h" |
| #include "reg.h" |
| #include "resources.h" |
| #include "../mlxfw/mlxfw.h" |
| |
| static LIST_HEAD(mlxsw_core_driver_list); |
| static DEFINE_SPINLOCK(mlxsw_core_driver_list_lock); |
| |
| static const char mlxsw_core_driver_name[] = "mlxsw_core"; |
| |
| static struct workqueue_struct *mlxsw_wq; |
| static struct workqueue_struct *mlxsw_owq; |
| |
| struct mlxsw_core_port { |
| struct devlink_port devlink_port; |
| void *port_driver_priv; |
| u8 local_port; |
| }; |
| |
| void *mlxsw_core_port_driver_priv(struct mlxsw_core_port *mlxsw_core_port) |
| { |
| return mlxsw_core_port->port_driver_priv; |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_driver_priv); |
| |
| static bool mlxsw_core_port_check(struct mlxsw_core_port *mlxsw_core_port) |
| { |
| return mlxsw_core_port->port_driver_priv != NULL; |
| } |
| |
| struct mlxsw_core { |
| struct mlxsw_driver *driver; |
| const struct mlxsw_bus *bus; |
| void *bus_priv; |
| const struct mlxsw_bus_info *bus_info; |
| struct workqueue_struct *emad_wq; |
| struct list_head rx_listener_list; |
| struct list_head event_listener_list; |
| struct { |
| atomic64_t tid; |
| struct list_head trans_list; |
| spinlock_t trans_list_lock; /* protects trans_list writes */ |
| bool use_emad; |
| bool enable_string_tlv; |
| } emad; |
| struct { |
| u8 *mapping; /* lag_id+port_index to local_port mapping */ |
| } lag; |
| struct mlxsw_res res; |
| struct mlxsw_hwmon *hwmon; |
| struct mlxsw_thermal *thermal; |
| struct mlxsw_core_port *ports; |
| unsigned int max_ports; |
| atomic_t active_ports_count; |
| bool fw_flash_in_progress; |
| struct { |
| struct devlink_health_reporter *fw_fatal; |
| } health; |
| struct mlxsw_env *env; |
| unsigned long driver_priv[]; |
| /* driver_priv has to be always the last item */ |
| }; |
| |
| #define MLXSW_PORT_MAX_PORTS_DEFAULT 0x40 |
| |
| static u64 mlxsw_ports_occ_get(void *priv) |
| { |
| struct mlxsw_core *mlxsw_core = priv; |
| |
| return atomic_read(&mlxsw_core->active_ports_count); |
| } |
| |
| static int mlxsw_core_resources_ports_register(struct mlxsw_core *mlxsw_core) |
| { |
| struct devlink *devlink = priv_to_devlink(mlxsw_core); |
| struct devlink_resource_size_params ports_num_params; |
| u32 max_ports; |
| |
| max_ports = mlxsw_core->max_ports - 1; |
| devlink_resource_size_params_init(&ports_num_params, max_ports, |
| max_ports, 1, |
| DEVLINK_RESOURCE_UNIT_ENTRY); |
| |
| return devlink_resource_register(devlink, |
| DEVLINK_RESOURCE_GENERIC_NAME_PORTS, |
| max_ports, MLXSW_CORE_RESOURCE_PORTS, |
| DEVLINK_RESOURCE_ID_PARENT_TOP, |
| &ports_num_params); |
| } |
| |
| static int mlxsw_ports_init(struct mlxsw_core *mlxsw_core, bool reload) |
| { |
| struct devlink *devlink = priv_to_devlink(mlxsw_core); |
| int err; |
| |
| /* Switch ports are numbered from 1 to queried value */ |
| if (MLXSW_CORE_RES_VALID(mlxsw_core, MAX_SYSTEM_PORT)) |
| mlxsw_core->max_ports = MLXSW_CORE_RES_GET(mlxsw_core, |
| MAX_SYSTEM_PORT) + 1; |
| else |
| mlxsw_core->max_ports = MLXSW_PORT_MAX_PORTS_DEFAULT + 1; |
| |
| mlxsw_core->ports = kcalloc(mlxsw_core->max_ports, |
| sizeof(struct mlxsw_core_port), GFP_KERNEL); |
| if (!mlxsw_core->ports) |
| return -ENOMEM; |
| |
| if (!reload) { |
| err = mlxsw_core_resources_ports_register(mlxsw_core); |
| if (err) |
| goto err_resources_ports_register; |
| } |
| atomic_set(&mlxsw_core->active_ports_count, 0); |
| devlink_resource_occ_get_register(devlink, MLXSW_CORE_RESOURCE_PORTS, |
| mlxsw_ports_occ_get, mlxsw_core); |
| |
| return 0; |
| |
| err_resources_ports_register: |
| kfree(mlxsw_core->ports); |
| return err; |
| } |
| |
| static void mlxsw_ports_fini(struct mlxsw_core *mlxsw_core, bool reload) |
| { |
| struct devlink *devlink = priv_to_devlink(mlxsw_core); |
| |
| devlink_resource_occ_get_unregister(devlink, MLXSW_CORE_RESOURCE_PORTS); |
| if (!reload) |
| devlink_resources_unregister(priv_to_devlink(mlxsw_core), NULL); |
| |
| kfree(mlxsw_core->ports); |
| } |
| |
| unsigned int mlxsw_core_max_ports(const struct mlxsw_core *mlxsw_core) |
| { |
| return mlxsw_core->max_ports; |
| } |
| EXPORT_SYMBOL(mlxsw_core_max_ports); |
| |
| void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core) |
| { |
| return mlxsw_core->driver_priv; |
| } |
| 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); |
| |
| bool mlxsw_core_temp_warn_enabled(const struct mlxsw_core *mlxsw_core) |
| { |
| return mlxsw_core->driver->temp_warn_enabled; |
| } |
| |
| bool |
| mlxsw_core_fw_rev_minor_subminor_validate(const struct mlxsw_fw_rev *rev, |
| const struct mlxsw_fw_rev *req_rev) |
| { |
| return rev->minor > req_rev->minor || |
| (rev->minor == req_rev->minor && |
| rev->subminor >= req_rev->subminor); |
| } |
| EXPORT_SYMBOL(mlxsw_core_fw_rev_minor_subminor_validate); |
| |
| struct mlxsw_rx_listener_item { |
| struct list_head list; |
| struct mlxsw_rx_listener rxl; |
| void *priv; |
| bool enabled; |
| }; |
| |
| struct mlxsw_event_listener_item { |
| struct list_head list; |
| struct mlxsw_core *mlxsw_core; |
| struct mlxsw_event_listener el; |
| void *priv; |
| }; |
| |
| /****************** |
| * EMAD processing |
| ******************/ |
| |
| /* emad_eth_hdr_dmac |
| * Destination MAC in EMAD's Ethernet header. |
| * Must be set to 01:02:c9:00:00:01 |
| */ |
| MLXSW_ITEM_BUF(emad, eth_hdr, dmac, 0x00, 6); |
| |
| /* emad_eth_hdr_smac |
| * Source MAC in EMAD's Ethernet header. |
| * Must be set to 00:02:c9:01:02:03 |
| */ |
| MLXSW_ITEM_BUF(emad, eth_hdr, smac, 0x06, 6); |
| |
| /* emad_eth_hdr_ethertype |
| * Ethertype in EMAD's Ethernet header. |
| * Must be set to 0x8932 |
| */ |
| MLXSW_ITEM32(emad, eth_hdr, ethertype, 0x0C, 16, 16); |
| |
| /* emad_eth_hdr_mlx_proto |
| * Mellanox protocol. |
| * Must be set to 0x0. |
| */ |
| MLXSW_ITEM32(emad, eth_hdr, mlx_proto, 0x0C, 8, 8); |
| |
| /* emad_eth_hdr_ver |
| * Mellanox protocol version. |
| * Must be set to 0x0. |
| */ |
| MLXSW_ITEM32(emad, eth_hdr, ver, 0x0C, 4, 4); |
| |
| /* emad_op_tlv_type |
| * Type of the TLV. |
| * Must be set to 0x1 (operation TLV). |
| */ |
| MLXSW_ITEM32(emad, op_tlv, type, 0x00, 27, 5); |
| |
| /* emad_op_tlv_len |
| * Length of the operation TLV in u32. |
| * Must be set to 0x4. |
| */ |
| MLXSW_ITEM32(emad, op_tlv, len, 0x00, 16, 11); |
| |
| /* emad_op_tlv_dr |
| * Direct route bit. Setting to 1 indicates the EMAD is a direct route |
| * EMAD. DR TLV must follow. |
| * |
| * Note: Currently not supported and must not be set. |
| */ |
| MLXSW_ITEM32(emad, op_tlv, dr, 0x00, 15, 1); |
| |
| /* emad_op_tlv_status |
| * Returned status in case of EMAD response. Must be set to 0 in case |
| * of EMAD request. |
| * 0x0 - success |
| * 0x1 - device is busy. Requester should retry |
| * 0x2 - Mellanox protocol version not supported |
| * 0x3 - unknown TLV |
| * 0x4 - register not supported |
| * 0x5 - operation class not supported |
| * 0x6 - EMAD method not supported |
| * 0x7 - bad parameter (e.g. port out of range) |
| * 0x8 - resource not available |
| * 0x9 - message receipt acknowledgment. Requester should retry |
| * 0x70 - internal error |
| */ |
| MLXSW_ITEM32(emad, op_tlv, status, 0x00, 8, 7); |
| |
| /* emad_op_tlv_register_id |
| * Register ID of register within register TLV. |
| */ |
| MLXSW_ITEM32(emad, op_tlv, register_id, 0x04, 16, 16); |
| |
| /* emad_op_tlv_r |
| * Response bit. Setting to 1 indicates Response, otherwise request. |
| */ |
| MLXSW_ITEM32(emad, op_tlv, r, 0x04, 15, 1); |
| |
| /* emad_op_tlv_method |
| * EMAD method type. |
| * 0x1 - query |
| * 0x2 - write |
| * 0x3 - send (currently not supported) |
| * 0x4 - event |
| */ |
| MLXSW_ITEM32(emad, op_tlv, method, 0x04, 8, 7); |
| |
| /* emad_op_tlv_class |
| * EMAD operation class. Must be set to 0x1 (REG_ACCESS). |
| */ |
| MLXSW_ITEM32(emad, op_tlv, class, 0x04, 0, 8); |
| |
| /* emad_op_tlv_tid |
| * EMAD transaction ID. Used for pairing request and response EMADs. |
| */ |
| MLXSW_ITEM64(emad, op_tlv, tid, 0x08, 0, 64); |
| |
| /* emad_string_tlv_type |
| * Type of the TLV. |
| * Must be set to 0x2 (string TLV). |
| */ |
| MLXSW_ITEM32(emad, string_tlv, type, 0x00, 27, 5); |
| |
| /* emad_string_tlv_len |
| * Length of the string TLV in u32. |
| */ |
| MLXSW_ITEM32(emad, string_tlv, len, 0x00, 16, 11); |
| |
| #define MLXSW_EMAD_STRING_TLV_STRING_LEN 128 |
| |
| /* emad_string_tlv_string |
| * String provided by the device's firmware in case of erroneous register access |
| */ |
| MLXSW_ITEM_BUF(emad, string_tlv, string, 0x04, |
| MLXSW_EMAD_STRING_TLV_STRING_LEN); |
| |
| /* emad_reg_tlv_type |
| * Type of the TLV. |
| * Must be set to 0x3 (register TLV). |
| */ |
| MLXSW_ITEM32(emad, reg_tlv, type, 0x00, 27, 5); |
| |
| /* emad_reg_tlv_len |
| * Length of the operation TLV in u32. |
| */ |
| MLXSW_ITEM32(emad, reg_tlv, len, 0x00, 16, 11); |
| |
| /* emad_end_tlv_type |
| * Type of the TLV. |
| * Must be set to 0x0 (end TLV). |
| */ |
| MLXSW_ITEM32(emad, end_tlv, type, 0x00, 27, 5); |
| |
| /* emad_end_tlv_len |
| * Length of the end TLV in u32. |
| * Must be set to 1. |
| */ |
| MLXSW_ITEM32(emad, end_tlv, len, 0x00, 16, 11); |
| |
| enum mlxsw_core_reg_access_type { |
| MLXSW_CORE_REG_ACCESS_TYPE_QUERY, |
| MLXSW_CORE_REG_ACCESS_TYPE_WRITE, |
| }; |
| |
| static inline const char * |
| mlxsw_core_reg_access_type_str(enum mlxsw_core_reg_access_type type) |
| { |
| switch (type) { |
| case MLXSW_CORE_REG_ACCESS_TYPE_QUERY: |
| return "query"; |
| case MLXSW_CORE_REG_ACCESS_TYPE_WRITE: |
| return "write"; |
| } |
| BUG(); |
| } |
| |
| static void mlxsw_emad_pack_end_tlv(char *end_tlv) |
| { |
| mlxsw_emad_end_tlv_type_set(end_tlv, MLXSW_EMAD_TLV_TYPE_END); |
| mlxsw_emad_end_tlv_len_set(end_tlv, MLXSW_EMAD_END_TLV_LEN); |
| } |
| |
| static void mlxsw_emad_pack_reg_tlv(char *reg_tlv, |
| const struct mlxsw_reg_info *reg, |
| char *payload) |
| { |
| mlxsw_emad_reg_tlv_type_set(reg_tlv, MLXSW_EMAD_TLV_TYPE_REG); |
| mlxsw_emad_reg_tlv_len_set(reg_tlv, reg->len / sizeof(u32) + 1); |
| memcpy(reg_tlv + sizeof(u32), payload, reg->len); |
| } |
| |
| static void mlxsw_emad_pack_string_tlv(char *string_tlv) |
| { |
| mlxsw_emad_string_tlv_type_set(string_tlv, MLXSW_EMAD_TLV_TYPE_STRING); |
| mlxsw_emad_string_tlv_len_set(string_tlv, MLXSW_EMAD_STRING_TLV_LEN); |
| } |
| |
| static void mlxsw_emad_pack_op_tlv(char *op_tlv, |
| const struct mlxsw_reg_info *reg, |
| enum mlxsw_core_reg_access_type type, |
| u64 tid) |
| { |
| mlxsw_emad_op_tlv_type_set(op_tlv, MLXSW_EMAD_TLV_TYPE_OP); |
| mlxsw_emad_op_tlv_len_set(op_tlv, MLXSW_EMAD_OP_TLV_LEN); |
| mlxsw_emad_op_tlv_dr_set(op_tlv, 0); |
| mlxsw_emad_op_tlv_status_set(op_tlv, 0); |
| mlxsw_emad_op_tlv_register_id_set(op_tlv, reg->id); |
| mlxsw_emad_op_tlv_r_set(op_tlv, MLXSW_EMAD_OP_TLV_REQUEST); |
| if (type == MLXSW_CORE_REG_ACCESS_TYPE_QUERY) |
| mlxsw_emad_op_tlv_method_set(op_tlv, |
| MLXSW_EMAD_OP_TLV_METHOD_QUERY); |
| else |
| mlxsw_emad_op_tlv_method_set(op_tlv, |
| MLXSW_EMAD_OP_TLV_METHOD_WRITE); |
| mlxsw_emad_op_tlv_class_set(op_tlv, |
| MLXSW_EMAD_OP_TLV_CLASS_REG_ACCESS); |
| mlxsw_emad_op_tlv_tid_set(op_tlv, tid); |
| } |
| |
| static int mlxsw_emad_construct_eth_hdr(struct sk_buff *skb) |
| { |
| char *eth_hdr = skb_push(skb, MLXSW_EMAD_ETH_HDR_LEN); |
| |
| mlxsw_emad_eth_hdr_dmac_memcpy_to(eth_hdr, MLXSW_EMAD_EH_DMAC); |
| mlxsw_emad_eth_hdr_smac_memcpy_to(eth_hdr, MLXSW_EMAD_EH_SMAC); |
| mlxsw_emad_eth_hdr_ethertype_set(eth_hdr, MLXSW_EMAD_EH_ETHERTYPE); |
| mlxsw_emad_eth_hdr_mlx_proto_set(eth_hdr, MLXSW_EMAD_EH_MLX_PROTO); |
| mlxsw_emad_eth_hdr_ver_set(eth_hdr, MLXSW_EMAD_EH_PROTO_VERSION); |
| |
| skb_reset_mac_header(skb); |
| |
| return 0; |
| } |
| |
| static void mlxsw_emad_construct(struct sk_buff *skb, |
| const struct mlxsw_reg_info *reg, |
| char *payload, |
| enum mlxsw_core_reg_access_type type, |
| u64 tid, bool enable_string_tlv) |
| { |
| char *buf; |
| |
| buf = skb_push(skb, MLXSW_EMAD_END_TLV_LEN * sizeof(u32)); |
| mlxsw_emad_pack_end_tlv(buf); |
| |
| buf = skb_push(skb, reg->len + sizeof(u32)); |
| mlxsw_emad_pack_reg_tlv(buf, reg, payload); |
| |
| if (enable_string_tlv) { |
| buf = skb_push(skb, MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32)); |
| mlxsw_emad_pack_string_tlv(buf); |
| } |
| |
| buf = skb_push(skb, MLXSW_EMAD_OP_TLV_LEN * sizeof(u32)); |
| mlxsw_emad_pack_op_tlv(buf, reg, type, tid); |
| |
| mlxsw_emad_construct_eth_hdr(skb); |
| } |
| |
| struct mlxsw_emad_tlv_offsets { |
| u16 op_tlv; |
| u16 string_tlv; |
| u16 reg_tlv; |
| }; |
| |
| static bool mlxsw_emad_tlv_is_string_tlv(const char *tlv) |
| { |
| u8 tlv_type = mlxsw_emad_string_tlv_type_get(tlv); |
| |
| return tlv_type == MLXSW_EMAD_TLV_TYPE_STRING; |
| } |
| |
| static void mlxsw_emad_tlv_parse(struct sk_buff *skb) |
| { |
| struct mlxsw_emad_tlv_offsets *offsets = |
| (struct mlxsw_emad_tlv_offsets *) skb->cb; |
| |
| offsets->op_tlv = MLXSW_EMAD_ETH_HDR_LEN; |
| offsets->string_tlv = 0; |
| offsets->reg_tlv = MLXSW_EMAD_ETH_HDR_LEN + |
| MLXSW_EMAD_OP_TLV_LEN * sizeof(u32); |
| |
| /* If string TLV is present, it must come after the operation TLV. */ |
| if (mlxsw_emad_tlv_is_string_tlv(skb->data + offsets->reg_tlv)) { |
| offsets->string_tlv = offsets->reg_tlv; |
| offsets->reg_tlv += MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32); |
| } |
| } |
| |
| static char *mlxsw_emad_op_tlv(const struct sk_buff *skb) |
| { |
| struct mlxsw_emad_tlv_offsets *offsets = |
| (struct mlxsw_emad_tlv_offsets *) skb->cb; |
| |
| return ((char *) (skb->data + offsets->op_tlv)); |
| } |
| |
| static char *mlxsw_emad_string_tlv(const struct sk_buff *skb) |
| { |
| struct mlxsw_emad_tlv_offsets *offsets = |
| (struct mlxsw_emad_tlv_offsets *) skb->cb; |
| |
| if (!offsets->string_tlv) |
| return NULL; |
| |
| return ((char *) (skb->data + offsets->string_tlv)); |
| } |
| |
| static char *mlxsw_emad_reg_tlv(const struct sk_buff *skb) |
| { |
| struct mlxsw_emad_tlv_offsets *offsets = |
| (struct mlxsw_emad_tlv_offsets *) skb->cb; |
| |
| return ((char *) (skb->data + offsets->reg_tlv)); |
| } |
| |
| static char *mlxsw_emad_reg_payload(const char *reg_tlv) |
| { |
| return ((char *) (reg_tlv + sizeof(u32))); |
| } |
| |
| static char *mlxsw_emad_reg_payload_cmd(const char *mbox) |
| { |
| return ((char *) (mbox + (MLXSW_EMAD_OP_TLV_LEN + 1) * sizeof(u32))); |
| } |
| |
| static u64 mlxsw_emad_get_tid(const struct sk_buff *skb) |
| { |
| char *op_tlv; |
| |
| op_tlv = mlxsw_emad_op_tlv(skb); |
| return mlxsw_emad_op_tlv_tid_get(op_tlv); |
| } |
| |
| static bool mlxsw_emad_is_resp(const struct sk_buff *skb) |
| { |
| char *op_tlv; |
| |
| op_tlv = mlxsw_emad_op_tlv(skb); |
| return (mlxsw_emad_op_tlv_r_get(op_tlv) == MLXSW_EMAD_OP_TLV_RESPONSE); |
| } |
| |
| static int mlxsw_emad_process_status(char *op_tlv, |
| enum mlxsw_emad_op_tlv_status *p_status) |
| { |
| *p_status = mlxsw_emad_op_tlv_status_get(op_tlv); |
| |
| switch (*p_status) { |
| case MLXSW_EMAD_OP_TLV_STATUS_SUCCESS: |
| return 0; |
| case MLXSW_EMAD_OP_TLV_STATUS_BUSY: |
| case MLXSW_EMAD_OP_TLV_STATUS_MESSAGE_RECEIPT_ACK: |
| return -EAGAIN; |
| case MLXSW_EMAD_OP_TLV_STATUS_VERSION_NOT_SUPPORTED: |
| case MLXSW_EMAD_OP_TLV_STATUS_UNKNOWN_TLV: |
| case MLXSW_EMAD_OP_TLV_STATUS_REGISTER_NOT_SUPPORTED: |
| case MLXSW_EMAD_OP_TLV_STATUS_CLASS_NOT_SUPPORTED: |
| case MLXSW_EMAD_OP_TLV_STATUS_METHOD_NOT_SUPPORTED: |
| case MLXSW_EMAD_OP_TLV_STATUS_BAD_PARAMETER: |
| case MLXSW_EMAD_OP_TLV_STATUS_RESOURCE_NOT_AVAILABLE: |
| case MLXSW_EMAD_OP_TLV_STATUS_INTERNAL_ERROR: |
| default: |
| return -EIO; |
| } |
| } |
| |
| static int |
| mlxsw_emad_process_status_skb(struct sk_buff *skb, |
| enum mlxsw_emad_op_tlv_status *p_status) |
| { |
| return mlxsw_emad_process_status(mlxsw_emad_op_tlv(skb), p_status); |
| } |
| |
| struct mlxsw_reg_trans { |
| struct list_head list; |
| struct list_head bulk_list; |
| struct mlxsw_core *core; |
| struct sk_buff *tx_skb; |
| struct mlxsw_tx_info tx_info; |
| struct delayed_work timeout_dw; |
| unsigned int retries; |
| u64 tid; |
| struct completion completion; |
| atomic_t active; |
| mlxsw_reg_trans_cb_t *cb; |
| unsigned long cb_priv; |
| const struct mlxsw_reg_info *reg; |
| enum mlxsw_core_reg_access_type type; |
| int err; |
| char *emad_err_string; |
| enum mlxsw_emad_op_tlv_status emad_status; |
| struct rcu_head rcu; |
| }; |
| |
| static void mlxsw_emad_process_string_tlv(const struct sk_buff *skb, |
| struct mlxsw_reg_trans *trans) |
| { |
| char *string_tlv; |
| char *string; |
| |
| string_tlv = mlxsw_emad_string_tlv(skb); |
| if (!string_tlv) |
| return; |
| |
| trans->emad_err_string = kzalloc(MLXSW_EMAD_STRING_TLV_STRING_LEN, |
| GFP_ATOMIC); |
| if (!trans->emad_err_string) |
| return; |
| |
| string = mlxsw_emad_string_tlv_string_data(string_tlv); |
| strlcpy(trans->emad_err_string, string, |
| MLXSW_EMAD_STRING_TLV_STRING_LEN); |
| } |
| |
| #define MLXSW_EMAD_TIMEOUT_DURING_FW_FLASH_MS 3000 |
| #define MLXSW_EMAD_TIMEOUT_MS 200 |
| |
| static void mlxsw_emad_trans_timeout_schedule(struct mlxsw_reg_trans *trans) |
| { |
| unsigned long timeout = msecs_to_jiffies(MLXSW_EMAD_TIMEOUT_MS); |
| |
| if (trans->core->fw_flash_in_progress) |
| timeout = msecs_to_jiffies(MLXSW_EMAD_TIMEOUT_DURING_FW_FLASH_MS); |
| |
| queue_delayed_work(trans->core->emad_wq, &trans->timeout_dw, |
| timeout << trans->retries); |
| } |
| |
| static int mlxsw_emad_transmit(struct mlxsw_core *mlxsw_core, |
| struct mlxsw_reg_trans *trans) |
| { |
| struct sk_buff *skb; |
| int err; |
| |
| skb = skb_clone(trans->tx_skb, GFP_KERNEL); |
| if (!skb) |
| return -ENOMEM; |
| |
| trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), false, 0, |
| skb->data + mlxsw_core->driver->txhdr_len, |
| skb->len - mlxsw_core->driver->txhdr_len); |
| |
| atomic_set(&trans->active, 1); |
| err = mlxsw_core_skb_transmit(mlxsw_core, skb, &trans->tx_info); |
| if (err) { |
| dev_kfree_skb(skb); |
| return err; |
| } |
| mlxsw_emad_trans_timeout_schedule(trans); |
| return 0; |
| } |
| |
| static void mlxsw_emad_trans_finish(struct mlxsw_reg_trans *trans, int err) |
| { |
| struct mlxsw_core *mlxsw_core = trans->core; |
| |
| dev_kfree_skb(trans->tx_skb); |
| spin_lock_bh(&mlxsw_core->emad.trans_list_lock); |
| list_del_rcu(&trans->list); |
| spin_unlock_bh(&mlxsw_core->emad.trans_list_lock); |
| trans->err = err; |
| complete(&trans->completion); |
| } |
| |
| static void mlxsw_emad_transmit_retry(struct mlxsw_core *mlxsw_core, |
| struct mlxsw_reg_trans *trans) |
| { |
| int err; |
| |
| if (trans->retries < MLXSW_EMAD_MAX_RETRY) { |
| trans->retries++; |
| err = mlxsw_emad_transmit(trans->core, trans); |
| if (err == 0) |
| return; |
| |
| if (!atomic_dec_and_test(&trans->active)) |
| return; |
| } else { |
| err = -EIO; |
| } |
| mlxsw_emad_trans_finish(trans, err); |
| } |
| |
| static void mlxsw_emad_trans_timeout_work(struct work_struct *work) |
| { |
| struct mlxsw_reg_trans *trans = container_of(work, |
| struct mlxsw_reg_trans, |
| timeout_dw.work); |
| |
| if (!atomic_dec_and_test(&trans->active)) |
| return; |
| |
| mlxsw_emad_transmit_retry(trans->core, trans); |
| } |
| |
| static void mlxsw_emad_process_response(struct mlxsw_core *mlxsw_core, |
| struct mlxsw_reg_trans *trans, |
| struct sk_buff *skb) |
| { |
| int err; |
| |
| if (!atomic_dec_and_test(&trans->active)) |
| return; |
| |
| err = mlxsw_emad_process_status_skb(skb, &trans->emad_status); |
| if (err == -EAGAIN) { |
| mlxsw_emad_transmit_retry(mlxsw_core, trans); |
| } else { |
| if (err == 0) { |
| char *reg_tlv = mlxsw_emad_reg_tlv(skb); |
| |
| if (trans->cb) |
| trans->cb(mlxsw_core, |
| mlxsw_emad_reg_payload(reg_tlv), |
| trans->reg->len, trans->cb_priv); |
| } else { |
| mlxsw_emad_process_string_tlv(skb, trans); |
| } |
| mlxsw_emad_trans_finish(trans, err); |
| } |
| } |
| |
| /* called with rcu read lock held */ |
| static void mlxsw_emad_rx_listener_func(struct sk_buff *skb, u8 local_port, |
| void *priv) |
| { |
| struct mlxsw_core *mlxsw_core = priv; |
| struct mlxsw_reg_trans *trans; |
| |
| trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), true, 0, |
| skb->data, skb->len); |
| |
| mlxsw_emad_tlv_parse(skb); |
| |
| if (!mlxsw_emad_is_resp(skb)) |
| goto free_skb; |
| |
| list_for_each_entry_rcu(trans, &mlxsw_core->emad.trans_list, list) { |
| if (mlxsw_emad_get_tid(skb) == trans->tid) { |
| mlxsw_emad_process_response(mlxsw_core, trans, skb); |
| break; |
| } |
| } |
| |
| free_skb: |
| dev_kfree_skb(skb); |
| } |
| |
| static const struct mlxsw_listener mlxsw_emad_rx_listener = |
| MLXSW_RXL(mlxsw_emad_rx_listener_func, ETHEMAD, TRAP_TO_CPU, false, |
| EMAD, DISCARD); |
| |
| static int mlxsw_emad_init(struct mlxsw_core *mlxsw_core) |
| { |
| struct workqueue_struct *emad_wq; |
| u64 tid; |
| int err; |
| |
| if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX)) |
| return 0; |
| |
| emad_wq = alloc_workqueue("mlxsw_core_emad", 0, 0); |
| if (!emad_wq) |
| return -ENOMEM; |
| mlxsw_core->emad_wq = emad_wq; |
| |
| /* Set the upper 32 bits of the transaction ID field to a random |
| * number. This allows us to discard EMADs addressed to other |
| * devices. |
| */ |
| get_random_bytes(&tid, 4); |
| tid <<= 32; |
| atomic64_set(&mlxsw_core->emad.tid, tid); |
| |
| INIT_LIST_HEAD(&mlxsw_core->emad.trans_list); |
| spin_lock_init(&mlxsw_core->emad.trans_list_lock); |
| |
| err = mlxsw_core_trap_register(mlxsw_core, &mlxsw_emad_rx_listener, |
| mlxsw_core); |
| if (err) |
| goto err_trap_register; |
| |
| err = mlxsw_core->driver->basic_trap_groups_set(mlxsw_core); |
| if (err) |
| goto err_emad_trap_set; |
| mlxsw_core->emad.use_emad = true; |
| |
| return 0; |
| |
| err_emad_trap_set: |
| mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_emad_rx_listener, |
| mlxsw_core); |
| err_trap_register: |
| destroy_workqueue(mlxsw_core->emad_wq); |
| return err; |
| } |
| |
| static void mlxsw_emad_fini(struct mlxsw_core *mlxsw_core) |
| { |
| |
| if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX)) |
| return; |
| |
| mlxsw_core->emad.use_emad = false; |
| mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_emad_rx_listener, |
| mlxsw_core); |
| destroy_workqueue(mlxsw_core->emad_wq); |
| } |
| |
| static struct sk_buff *mlxsw_emad_alloc(const struct mlxsw_core *mlxsw_core, |
| u16 reg_len, bool enable_string_tlv) |
| { |
| struct sk_buff *skb; |
| u16 emad_len; |
| |
| emad_len = (reg_len + sizeof(u32) + MLXSW_EMAD_ETH_HDR_LEN + |
| (MLXSW_EMAD_OP_TLV_LEN + MLXSW_EMAD_END_TLV_LEN) * |
| sizeof(u32) + mlxsw_core->driver->txhdr_len); |
| if (enable_string_tlv) |
| emad_len += MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32); |
| if (emad_len > MLXSW_EMAD_MAX_FRAME_LEN) |
| return NULL; |
| |
| skb = netdev_alloc_skb(NULL, emad_len); |
| if (!skb) |
| return NULL; |
| memset(skb->data, 0, emad_len); |
| skb_reserve(skb, emad_len); |
| |
| return skb; |
| } |
| |
| static int mlxsw_emad_reg_access(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, |
| char *payload, |
| enum mlxsw_core_reg_access_type type, |
| struct mlxsw_reg_trans *trans, |
| struct list_head *bulk_list, |
| mlxsw_reg_trans_cb_t *cb, |
| unsigned long cb_priv, u64 tid) |
| { |
| bool enable_string_tlv; |
| struct sk_buff *skb; |
| int err; |
| |
| dev_dbg(mlxsw_core->bus_info->dev, "EMAD reg access (tid=%llx,reg_id=%x(%s),type=%s)\n", |
| tid, reg->id, mlxsw_reg_id_str(reg->id), |
| mlxsw_core_reg_access_type_str(type)); |
| |
| /* Since this can be changed during emad_reg_access, read it once and |
| * use the value all the way. |
| */ |
| enable_string_tlv = mlxsw_core->emad.enable_string_tlv; |
| |
| skb = mlxsw_emad_alloc(mlxsw_core, reg->len, enable_string_tlv); |
| if (!skb) |
| return -ENOMEM; |
| |
| list_add_tail(&trans->bulk_list, bulk_list); |
| trans->core = mlxsw_core; |
| trans->tx_skb = skb; |
| trans->tx_info.local_port = MLXSW_PORT_CPU_PORT; |
| trans->tx_info.is_emad = true; |
| INIT_DELAYED_WORK(&trans->timeout_dw, mlxsw_emad_trans_timeout_work); |
| trans->tid = tid; |
| init_completion(&trans->completion); |
| trans->cb = cb; |
| trans->cb_priv = cb_priv; |
| trans->reg = reg; |
| trans->type = type; |
| |
| mlxsw_emad_construct(skb, reg, payload, type, trans->tid, |
| enable_string_tlv); |
| mlxsw_core->driver->txhdr_construct(skb, &trans->tx_info); |
| |
| spin_lock_bh(&mlxsw_core->emad.trans_list_lock); |
| list_add_tail_rcu(&trans->list, &mlxsw_core->emad.trans_list); |
| spin_unlock_bh(&mlxsw_core->emad.trans_list_lock); |
| err = mlxsw_emad_transmit(mlxsw_core, trans); |
| if (err) |
| goto err_out; |
| return 0; |
| |
| err_out: |
| spin_lock_bh(&mlxsw_core->emad.trans_list_lock); |
| list_del_rcu(&trans->list); |
| spin_unlock_bh(&mlxsw_core->emad.trans_list_lock); |
| list_del(&trans->bulk_list); |
| dev_kfree_skb(trans->tx_skb); |
| return err; |
| } |
| |
| /***************** |
| * Core functions |
| *****************/ |
| |
| int mlxsw_core_driver_register(struct mlxsw_driver *mlxsw_driver) |
| { |
| spin_lock(&mlxsw_core_driver_list_lock); |
| list_add_tail(&mlxsw_driver->list, &mlxsw_core_driver_list); |
| spin_unlock(&mlxsw_core_driver_list_lock); |
| return 0; |
| } |
| EXPORT_SYMBOL(mlxsw_core_driver_register); |
| |
| void mlxsw_core_driver_unregister(struct mlxsw_driver *mlxsw_driver) |
| { |
| spin_lock(&mlxsw_core_driver_list_lock); |
| list_del(&mlxsw_driver->list); |
| spin_unlock(&mlxsw_core_driver_list_lock); |
| } |
| EXPORT_SYMBOL(mlxsw_core_driver_unregister); |
| |
| static struct mlxsw_driver *__driver_find(const char *kind) |
| { |
| struct mlxsw_driver *mlxsw_driver; |
| |
| list_for_each_entry(mlxsw_driver, &mlxsw_core_driver_list, list) { |
| if (strcmp(mlxsw_driver->kind, kind) == 0) |
| return mlxsw_driver; |
| } |
| return NULL; |
| } |
| |
| static struct mlxsw_driver *mlxsw_core_driver_get(const char *kind) |
| { |
| struct mlxsw_driver *mlxsw_driver; |
| |
| spin_lock(&mlxsw_core_driver_list_lock); |
| mlxsw_driver = __driver_find(kind); |
| spin_unlock(&mlxsw_core_driver_list_lock); |
| return mlxsw_driver; |
| } |
| |
| struct mlxsw_core_fw_info { |
| struct mlxfw_dev mlxfw_dev; |
| struct mlxsw_core *mlxsw_core; |
| }; |
| |
| static int mlxsw_core_fw_component_query(struct mlxfw_dev *mlxfw_dev, |
| u16 component_index, u32 *p_max_size, |
| u8 *p_align_bits, u16 *p_max_write_size) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcqi_pl[MLXSW_REG_MCQI_LEN]; |
| int err; |
| |
| mlxsw_reg_mcqi_pack(mcqi_pl, component_index); |
| err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mcqi), mcqi_pl); |
| if (err) |
| return err; |
| mlxsw_reg_mcqi_unpack(mcqi_pl, p_max_size, p_align_bits, p_max_write_size); |
| |
| *p_align_bits = max_t(u8, *p_align_bits, 2); |
| *p_max_write_size = min_t(u16, *p_max_write_size, MLXSW_REG_MCDA_MAX_DATA_LEN); |
| return 0; |
| } |
| |
| static int mlxsw_core_fw_fsm_lock(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcc_pl[MLXSW_REG_MCC_LEN]; |
| u8 control_state; |
| int err; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, 0, 0, 0, 0); |
| err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| if (err) |
| return err; |
| |
| mlxsw_reg_mcc_unpack(mcc_pl, fwhandle, NULL, &control_state); |
| if (control_state != MLXFW_FSM_STATE_IDLE) |
| return -EBUSY; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_LOCK_UPDATE_HANDLE, 0, *fwhandle, 0); |
| return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| } |
| |
| static int mlxsw_core_fw_fsm_component_update(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, |
| u16 component_index, u32 component_size) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcc_pl[MLXSW_REG_MCC_LEN]; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_UPDATE_COMPONENT, |
| component_index, fwhandle, component_size); |
| return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| } |
| |
| static int mlxsw_core_fw_fsm_block_download(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, |
| u8 *data, u16 size, u32 offset) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcda_pl[MLXSW_REG_MCDA_LEN]; |
| |
| mlxsw_reg_mcda_pack(mcda_pl, fwhandle, offset, size, data); |
| return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcda), mcda_pl); |
| } |
| |
| static int mlxsw_core_fw_fsm_component_verify(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, |
| u16 component_index) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcc_pl[MLXSW_REG_MCC_LEN]; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_VERIFY_COMPONENT, |
| component_index, fwhandle, 0); |
| return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| } |
| |
| static int mlxsw_core_fw_fsm_activate(struct mlxfw_dev *mlxfw_dev, u32 fwhandle) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcc_pl[MLXSW_REG_MCC_LEN]; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_ACTIVATE, 0, fwhandle, 0); |
| return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| } |
| |
| static int mlxsw_core_fw_fsm_query_state(struct mlxfw_dev *mlxfw_dev, u32 fwhandle, |
| enum mlxfw_fsm_state *fsm_state, |
| enum mlxfw_fsm_state_err *fsm_state_err) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcc_pl[MLXSW_REG_MCC_LEN]; |
| u8 control_state; |
| u8 error_code; |
| int err; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, 0, 0, fwhandle, 0); |
| err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| if (err) |
| return err; |
| |
| mlxsw_reg_mcc_unpack(mcc_pl, NULL, &error_code, &control_state); |
| *fsm_state = control_state; |
| *fsm_state_err = min_t(enum mlxfw_fsm_state_err, error_code, MLXFW_FSM_STATE_ERR_MAX); |
| return 0; |
| } |
| |
| static void mlxsw_core_fw_fsm_cancel(struct mlxfw_dev *mlxfw_dev, u32 fwhandle) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcc_pl[MLXSW_REG_MCC_LEN]; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_CANCEL, 0, fwhandle, 0); |
| mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| } |
| |
| static void mlxsw_core_fw_fsm_release(struct mlxfw_dev *mlxfw_dev, u32 fwhandle) |
| { |
| struct mlxsw_core_fw_info *mlxsw_core_fw_info = |
| container_of(mlxfw_dev, struct mlxsw_core_fw_info, mlxfw_dev); |
| struct mlxsw_core *mlxsw_core = mlxsw_core_fw_info->mlxsw_core; |
| char mcc_pl[MLXSW_REG_MCC_LEN]; |
| |
| mlxsw_reg_mcc_pack(mcc_pl, MLXSW_REG_MCC_INSTRUCTION_RELEASE_UPDATE_HANDLE, 0, fwhandle, 0); |
| mlxsw_reg_write(mlxsw_core, MLXSW_REG(mcc), mcc_pl); |
| } |
| |
| static const struct mlxfw_dev_ops mlxsw_core_fw_mlxsw_dev_ops = { |
| .component_query = mlxsw_core_fw_component_query, |
| .fsm_lock = mlxsw_core_fw_fsm_lock, |
| .fsm_component_update = mlxsw_core_fw_fsm_component_update, |
| .fsm_block_download = mlxsw_core_fw_fsm_block_download, |
| .fsm_component_verify = mlxsw_core_fw_fsm_component_verify, |
| .fsm_activate = mlxsw_core_fw_fsm_activate, |
| .fsm_query_state = mlxsw_core_fw_fsm_query_state, |
| .fsm_cancel = mlxsw_core_fw_fsm_cancel, |
| .fsm_release = mlxsw_core_fw_fsm_release, |
| }; |
| |
| static int mlxsw_core_fw_flash(struct mlxsw_core *mlxsw_core, const struct firmware *firmware, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core_fw_info mlxsw_core_fw_info = { |
| .mlxfw_dev = { |
| .ops = &mlxsw_core_fw_mlxsw_dev_ops, |
| .psid = mlxsw_core->bus_info->psid, |
| .psid_size = strlen(mlxsw_core->bus_info->psid), |
| .devlink = priv_to_devlink(mlxsw_core), |
| }, |
| .mlxsw_core = mlxsw_core |
| }; |
| int err; |
| |
| mlxsw_core->fw_flash_in_progress = true; |
| err = mlxfw_firmware_flash(&mlxsw_core_fw_info.mlxfw_dev, firmware, extack); |
| mlxsw_core->fw_flash_in_progress = false; |
| |
| return err; |
| } |
| |
| static int mlxsw_core_fw_rev_validate(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_bus_info *mlxsw_bus_info, |
| const struct mlxsw_fw_rev *req_rev, |
| const char *filename) |
| { |
| const struct mlxsw_fw_rev *rev = &mlxsw_bus_info->fw_rev; |
| union devlink_param_value value; |
| const struct firmware *firmware; |
| int err; |
| |
| /* Don't check if driver does not require it */ |
| if (!req_rev || !filename) |
| return 0; |
| |
| /* Don't check if devlink 'fw_load_policy' param is 'flash' */ |
| err = devlink_param_driverinit_value_get(priv_to_devlink(mlxsw_core), |
| DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY, |
| &value); |
| if (err) |
| return err; |
| if (value.vu8 == DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_FLASH) |
| return 0; |
| |
| /* Validate driver & FW are compatible */ |
| if (rev->major != req_rev->major) { |
| WARN(1, "Mismatch in major FW version [%d:%d] is never expected; Please contact support\n", |
| rev->major, req_rev->major); |
| return -EINVAL; |
| } |
| if (mlxsw_core_fw_rev_minor_subminor_validate(rev, req_rev)) |
| return 0; |
| |
| dev_err(mlxsw_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, req_rev->major, |
| req_rev->minor, req_rev->subminor); |
| dev_info(mlxsw_bus_info->dev, "Flashing firmware using file %s\n", filename); |
| |
| err = request_firmware_direct(&firmware, filename, mlxsw_bus_info->dev); |
| if (err) { |
| dev_err(mlxsw_bus_info->dev, "Could not request firmware file %s\n", filename); |
| return err; |
| } |
| |
| err = mlxsw_core_fw_flash(mlxsw_core, firmware, NULL); |
| release_firmware(firmware); |
| if (err) |
| dev_err(mlxsw_bus_info->dev, "Could not upgrade firmware\n"); |
| |
| /* On FW flash success, tell the caller FW reset is needed |
| * if current FW supports it. |
| */ |
| if (rev->minor >= req_rev->can_reset_minor) |
| return err ? err : -EAGAIN; |
| else |
| return 0; |
| } |
| |
| static int mlxsw_core_fw_flash_update(struct mlxsw_core *mlxsw_core, |
| struct devlink_flash_update_params *params, |
| struct netlink_ext_ack *extack) |
| { |
| return mlxsw_core_fw_flash(mlxsw_core, params->fw, extack); |
| } |
| |
| static int mlxsw_core_devlink_param_fw_load_policy_validate(struct devlink *devlink, u32 id, |
| union devlink_param_value val, |
| struct netlink_ext_ack *extack) |
| { |
| if (val.vu8 != DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_DRIVER && |
| val.vu8 != DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_FLASH) { |
| NL_SET_ERR_MSG_MOD(extack, "'fw_load_policy' must be 'driver' or 'flash'"); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static const struct devlink_param mlxsw_core_fw_devlink_params[] = { |
| DEVLINK_PARAM_GENERIC(FW_LOAD_POLICY, BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), NULL, NULL, |
| mlxsw_core_devlink_param_fw_load_policy_validate), |
| }; |
| |
| static int mlxsw_core_fw_params_register(struct mlxsw_core *mlxsw_core) |
| { |
| struct devlink *devlink = priv_to_devlink(mlxsw_core); |
| union devlink_param_value value; |
| int err; |
| |
| err = devlink_params_register(devlink, mlxsw_core_fw_devlink_params, |
| ARRAY_SIZE(mlxsw_core_fw_devlink_params)); |
| if (err) |
| return err; |
| |
| value.vu8 = DEVLINK_PARAM_FW_LOAD_POLICY_VALUE_DRIVER; |
| devlink_param_driverinit_value_set(devlink, DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY, value); |
| return 0; |
| } |
| |
| static void mlxsw_core_fw_params_unregister(struct mlxsw_core *mlxsw_core) |
| { |
| devlink_params_unregister(priv_to_devlink(mlxsw_core), mlxsw_core_fw_devlink_params, |
| ARRAY_SIZE(mlxsw_core_fw_devlink_params)); |
| } |
| |
| static int mlxsw_devlink_port_split(struct devlink *devlink, |
| unsigned int port_index, |
| unsigned int count, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| |
| if (port_index >= mlxsw_core->max_ports) { |
| NL_SET_ERR_MSG_MOD(extack, "Port index exceeds maximum number of ports"); |
| return -EINVAL; |
| } |
| if (!mlxsw_core->driver->port_split) |
| return -EOPNOTSUPP; |
| return mlxsw_core->driver->port_split(mlxsw_core, port_index, count, |
| extack); |
| } |
| |
| static int mlxsw_devlink_port_unsplit(struct devlink *devlink, |
| unsigned int port_index, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| |
| if (port_index >= mlxsw_core->max_ports) { |
| NL_SET_ERR_MSG_MOD(extack, "Port index exceeds maximum number of ports"); |
| return -EINVAL; |
| } |
| if (!mlxsw_core->driver->port_unsplit) |
| return -EOPNOTSUPP; |
| return mlxsw_core->driver->port_unsplit(mlxsw_core, port_index, |
| extack); |
| } |
| |
| static int |
| mlxsw_devlink_sb_pool_get(struct devlink *devlink, |
| unsigned int sb_index, u16 pool_index, |
| struct devlink_sb_pool_info *pool_info) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->sb_pool_get) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_pool_get(mlxsw_core, sb_index, |
| pool_index, pool_info); |
| } |
| |
| static int |
| mlxsw_devlink_sb_pool_set(struct devlink *devlink, |
| unsigned int sb_index, u16 pool_index, u32 size, |
| enum devlink_sb_threshold_type threshold_type, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->sb_pool_set) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_pool_set(mlxsw_core, sb_index, |
| pool_index, size, threshold_type, |
| extack); |
| } |
| |
| static void *__dl_port(struct devlink_port *devlink_port) |
| { |
| return container_of(devlink_port, struct mlxsw_core_port, devlink_port); |
| } |
| |
| static int mlxsw_devlink_port_type_set(struct devlink_port *devlink_port, |
| enum devlink_port_type port_type) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); |
| |
| if (!mlxsw_driver->port_type_set) |
| return -EOPNOTSUPP; |
| |
| return mlxsw_driver->port_type_set(mlxsw_core, |
| mlxsw_core_port->local_port, |
| port_type); |
| } |
| |
| static int mlxsw_devlink_sb_port_pool_get(struct devlink_port *devlink_port, |
| unsigned int sb_index, u16 pool_index, |
| u32 *p_threshold) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); |
| |
| if (!mlxsw_driver->sb_port_pool_get || |
| !mlxsw_core_port_check(mlxsw_core_port)) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_port_pool_get(mlxsw_core_port, sb_index, |
| pool_index, p_threshold); |
| } |
| |
| static int mlxsw_devlink_sb_port_pool_set(struct devlink_port *devlink_port, |
| unsigned int sb_index, u16 pool_index, |
| u32 threshold, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); |
| |
| if (!mlxsw_driver->sb_port_pool_set || |
| !mlxsw_core_port_check(mlxsw_core_port)) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_port_pool_set(mlxsw_core_port, sb_index, |
| pool_index, threshold, extack); |
| } |
| |
| static int |
| mlxsw_devlink_sb_tc_pool_bind_get(struct devlink_port *devlink_port, |
| unsigned int sb_index, u16 tc_index, |
| enum devlink_sb_pool_type pool_type, |
| u16 *p_pool_index, u32 *p_threshold) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); |
| |
| if (!mlxsw_driver->sb_tc_pool_bind_get || |
| !mlxsw_core_port_check(mlxsw_core_port)) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_tc_pool_bind_get(mlxsw_core_port, sb_index, |
| tc_index, pool_type, |
| p_pool_index, p_threshold); |
| } |
| |
| static int |
| mlxsw_devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port, |
| unsigned int sb_index, u16 tc_index, |
| enum devlink_sb_pool_type pool_type, |
| u16 pool_index, u32 threshold, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); |
| |
| if (!mlxsw_driver->sb_tc_pool_bind_set || |
| !mlxsw_core_port_check(mlxsw_core_port)) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_tc_pool_bind_set(mlxsw_core_port, sb_index, |
| tc_index, pool_type, |
| pool_index, threshold, extack); |
| } |
| |
| static int mlxsw_devlink_sb_occ_snapshot(struct devlink *devlink, |
| unsigned int sb_index) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->sb_occ_snapshot) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_occ_snapshot(mlxsw_core, sb_index); |
| } |
| |
| static int mlxsw_devlink_sb_occ_max_clear(struct devlink *devlink, |
| unsigned int sb_index) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->sb_occ_max_clear) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_occ_max_clear(mlxsw_core, sb_index); |
| } |
| |
| static int |
| mlxsw_devlink_sb_occ_port_pool_get(struct devlink_port *devlink_port, |
| unsigned int sb_index, u16 pool_index, |
| u32 *p_cur, u32 *p_max) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); |
| |
| if (!mlxsw_driver->sb_occ_port_pool_get || |
| !mlxsw_core_port_check(mlxsw_core_port)) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_occ_port_pool_get(mlxsw_core_port, sb_index, |
| pool_index, p_cur, p_max); |
| } |
| |
| static int |
| mlxsw_devlink_sb_occ_tc_port_bind_get(struct devlink_port *devlink_port, |
| unsigned int sb_index, u16 tc_index, |
| enum devlink_sb_pool_type pool_type, |
| u32 *p_cur, u32 *p_max) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink_port->devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| struct mlxsw_core_port *mlxsw_core_port = __dl_port(devlink_port); |
| |
| if (!mlxsw_driver->sb_occ_tc_port_bind_get || |
| !mlxsw_core_port_check(mlxsw_core_port)) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->sb_occ_tc_port_bind_get(mlxsw_core_port, |
| sb_index, tc_index, |
| pool_type, p_cur, p_max); |
| } |
| |
| static int |
| mlxsw_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| char fw_info_psid[MLXSW_REG_MGIR_FW_INFO_PSID_SIZE]; |
| u32 hw_rev, fw_major, fw_minor, fw_sub_minor; |
| char mgir_pl[MLXSW_REG_MGIR_LEN]; |
| char buf[32]; |
| int err; |
| |
| err = devlink_info_driver_name_put(req, |
| mlxsw_core->bus_info->device_kind); |
| if (err) |
| return err; |
| |
| mlxsw_reg_mgir_pack(mgir_pl); |
| err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mgir), mgir_pl); |
| if (err) |
| return err; |
| mlxsw_reg_mgir_unpack(mgir_pl, &hw_rev, fw_info_psid, &fw_major, |
| &fw_minor, &fw_sub_minor); |
| |
| sprintf(buf, "%X", hw_rev); |
| err = devlink_info_version_fixed_put(req, "hw.revision", buf); |
| if (err) |
| return err; |
| |
| err = devlink_info_version_fixed_put(req, |
| DEVLINK_INFO_VERSION_GENERIC_FW_PSID, |
| fw_info_psid); |
| if (err) |
| return err; |
| |
| sprintf(buf, "%d.%d.%d", fw_major, fw_minor, fw_sub_minor); |
| err = devlink_info_version_running_put(req, "fw.version", buf); |
| if (err) |
| return err; |
| |
| return devlink_info_version_running_put(req, |
| DEVLINK_INFO_VERSION_GENERIC_FW, |
| buf); |
| } |
| |
| static int |
| mlxsw_devlink_core_bus_device_reload_down(struct devlink *devlink, |
| bool netns_change, enum devlink_reload_action action, |
| enum devlink_reload_limit limit, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| |
| if (!(mlxsw_core->bus->features & MLXSW_BUS_F_RESET)) |
| return -EOPNOTSUPP; |
| |
| mlxsw_core_bus_device_unregister(mlxsw_core, true); |
| return 0; |
| } |
| |
| static int |
| mlxsw_devlink_core_bus_device_reload_up(struct devlink *devlink, enum devlink_reload_action action, |
| enum devlink_reload_limit limit, u32 *actions_performed, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| |
| *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) | |
| BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE); |
| return mlxsw_core_bus_device_register(mlxsw_core->bus_info, |
| mlxsw_core->bus, |
| mlxsw_core->bus_priv, true, |
| devlink, extack); |
| } |
| |
| static int mlxsw_devlink_flash_update(struct devlink *devlink, |
| struct devlink_flash_update_params *params, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| |
| return mlxsw_core_fw_flash_update(mlxsw_core, params, extack); |
| } |
| |
| static int mlxsw_devlink_trap_init(struct devlink *devlink, |
| const struct devlink_trap *trap, |
| void *trap_ctx) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_init) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->trap_init(mlxsw_core, trap, trap_ctx); |
| } |
| |
| static void mlxsw_devlink_trap_fini(struct devlink *devlink, |
| const struct devlink_trap *trap, |
| void *trap_ctx) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_fini) |
| return; |
| mlxsw_driver->trap_fini(mlxsw_core, trap, trap_ctx); |
| } |
| |
| static int mlxsw_devlink_trap_action_set(struct devlink *devlink, |
| const struct devlink_trap *trap, |
| enum devlink_trap_action action, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_action_set) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->trap_action_set(mlxsw_core, trap, action, extack); |
| } |
| |
| static int |
| mlxsw_devlink_trap_group_init(struct devlink *devlink, |
| const struct devlink_trap_group *group) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_group_init) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->trap_group_init(mlxsw_core, group); |
| } |
| |
| static int |
| mlxsw_devlink_trap_group_set(struct devlink *devlink, |
| const struct devlink_trap_group *group, |
| const struct devlink_trap_policer *policer, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_group_set) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->trap_group_set(mlxsw_core, group, policer, extack); |
| } |
| |
| static int |
| mlxsw_devlink_trap_policer_init(struct devlink *devlink, |
| const struct devlink_trap_policer *policer) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_policer_init) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->trap_policer_init(mlxsw_core, policer); |
| } |
| |
| static void |
| mlxsw_devlink_trap_policer_fini(struct devlink *devlink, |
| const struct devlink_trap_policer *policer) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_policer_fini) |
| return; |
| mlxsw_driver->trap_policer_fini(mlxsw_core, policer); |
| } |
| |
| static int |
| mlxsw_devlink_trap_policer_set(struct devlink *devlink, |
| const struct devlink_trap_policer *policer, |
| u64 rate, u64 burst, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_policer_set) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->trap_policer_set(mlxsw_core, policer, rate, burst, |
| extack); |
| } |
| |
| static int |
| mlxsw_devlink_trap_policer_counter_get(struct devlink *devlink, |
| const struct devlink_trap_policer *policer, |
| u64 *p_drops) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_priv(devlink); |
| struct mlxsw_driver *mlxsw_driver = mlxsw_core->driver; |
| |
| if (!mlxsw_driver->trap_policer_counter_get) |
| return -EOPNOTSUPP; |
| return mlxsw_driver->trap_policer_counter_get(mlxsw_core, policer, |
| p_drops); |
| } |
| |
| static const struct devlink_ops mlxsw_devlink_ops = { |
| .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) | |
| BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE), |
| .reload_down = mlxsw_devlink_core_bus_device_reload_down, |
| .reload_up = mlxsw_devlink_core_bus_device_reload_up, |
| .port_type_set = mlxsw_devlink_port_type_set, |
| .port_split = mlxsw_devlink_port_split, |
| .port_unsplit = mlxsw_devlink_port_unsplit, |
| .sb_pool_get = mlxsw_devlink_sb_pool_get, |
| .sb_pool_set = mlxsw_devlink_sb_pool_set, |
| .sb_port_pool_get = mlxsw_devlink_sb_port_pool_get, |
| .sb_port_pool_set = mlxsw_devlink_sb_port_pool_set, |
| .sb_tc_pool_bind_get = mlxsw_devlink_sb_tc_pool_bind_get, |
| .sb_tc_pool_bind_set = mlxsw_devlink_sb_tc_pool_bind_set, |
| .sb_occ_snapshot = mlxsw_devlink_sb_occ_snapshot, |
| .sb_occ_max_clear = mlxsw_devlink_sb_occ_max_clear, |
| .sb_occ_port_pool_get = mlxsw_devlink_sb_occ_port_pool_get, |
| .sb_occ_tc_port_bind_get = mlxsw_devlink_sb_occ_tc_port_bind_get, |
| .info_get = mlxsw_devlink_info_get, |
| .flash_update = mlxsw_devlink_flash_update, |
| .trap_init = mlxsw_devlink_trap_init, |
| .trap_fini = mlxsw_devlink_trap_fini, |
| .trap_action_set = mlxsw_devlink_trap_action_set, |
| .trap_group_init = mlxsw_devlink_trap_group_init, |
| .trap_group_set = mlxsw_devlink_trap_group_set, |
| .trap_policer_init = mlxsw_devlink_trap_policer_init, |
| .trap_policer_fini = mlxsw_devlink_trap_policer_fini, |
| .trap_policer_set = mlxsw_devlink_trap_policer_set, |
| .trap_policer_counter_get = mlxsw_devlink_trap_policer_counter_get, |
| }; |
| |
| static int mlxsw_core_params_register(struct mlxsw_core *mlxsw_core) |
| { |
| int err; |
| |
| err = mlxsw_core_fw_params_register(mlxsw_core); |
| if (err) |
| return err; |
| |
| if (mlxsw_core->driver->params_register) { |
| err = mlxsw_core->driver->params_register(mlxsw_core); |
| if (err) |
| goto err_params_register; |
| } |
| return 0; |
| |
| err_params_register: |
| mlxsw_core_fw_params_unregister(mlxsw_core); |
| return err; |
| } |
| |
| static void mlxsw_core_params_unregister(struct mlxsw_core *mlxsw_core) |
| { |
| mlxsw_core_fw_params_unregister(mlxsw_core); |
| if (mlxsw_core->driver->params_register) |
| mlxsw_core->driver->params_unregister(mlxsw_core); |
| } |
| |
| struct mlxsw_core_health_event { |
| struct mlxsw_core *mlxsw_core; |
| char mfde_pl[MLXSW_REG_MFDE_LEN]; |
| struct work_struct work; |
| }; |
| |
| static void mlxsw_core_health_event_work(struct work_struct *work) |
| { |
| struct mlxsw_core_health_event *event; |
| struct mlxsw_core *mlxsw_core; |
| |
| event = container_of(work, struct mlxsw_core_health_event, work); |
| mlxsw_core = event->mlxsw_core; |
| devlink_health_report(mlxsw_core->health.fw_fatal, "FW fatal event occurred", |
| event->mfde_pl); |
| kfree(event); |
| } |
| |
| static void mlxsw_core_health_listener_func(const struct mlxsw_reg_info *reg, |
| char *mfde_pl, void *priv) |
| { |
| struct mlxsw_core_health_event *event; |
| struct mlxsw_core *mlxsw_core = priv; |
| |
| event = kmalloc(sizeof(*event), GFP_ATOMIC); |
| if (!event) |
| return; |
| event->mlxsw_core = mlxsw_core; |
| memcpy(event->mfde_pl, mfde_pl, sizeof(event->mfde_pl)); |
| INIT_WORK(&event->work, mlxsw_core_health_event_work); |
| mlxsw_core_schedule_work(&event->work); |
| } |
| |
| static const struct mlxsw_listener mlxsw_core_health_listener = |
| MLXSW_EVENTL(mlxsw_core_health_listener_func, MFDE, MFDE); |
| |
| static int mlxsw_core_health_fw_fatal_dump(struct devlink_health_reporter *reporter, |
| struct devlink_fmsg *fmsg, void *priv_ctx, |
| struct netlink_ext_ack *extack) |
| { |
| char *mfde_pl = priv_ctx; |
| char *val_str; |
| u8 event_id; |
| u32 val; |
| int err; |
| |
| if (!priv_ctx) |
| /* User-triggered dumps are not possible */ |
| return -EOPNOTSUPP; |
| |
| val = mlxsw_reg_mfde_irisc_id_get(mfde_pl); |
| err = devlink_fmsg_u8_pair_put(fmsg, "irisc_id", val); |
| if (err) |
| return err; |
| err = devlink_fmsg_arr_pair_nest_start(fmsg, "event"); |
| if (err) |
| return err; |
| |
| event_id = mlxsw_reg_mfde_event_id_get(mfde_pl); |
| err = devlink_fmsg_u32_pair_put(fmsg, "id", event_id); |
| if (err) |
| return err; |
| switch (event_id) { |
| case MLXSW_REG_MFDE_EVENT_ID_CRSPACE_TO: |
| val_str = "CR space timeout"; |
| break; |
| case MLXSW_REG_MFDE_EVENT_ID_KVD_IM_STOP: |
| val_str = "KVD insertion machine stopped"; |
| break; |
| default: |
| val_str = NULL; |
| } |
| if (val_str) { |
| err = devlink_fmsg_string_pair_put(fmsg, "desc", val_str); |
| if (err) |
| return err; |
| } |
| err = devlink_fmsg_arr_pair_nest_end(fmsg); |
| if (err) |
| return err; |
| |
| val = mlxsw_reg_mfde_method_get(mfde_pl); |
| switch (val) { |
| case MLXSW_REG_MFDE_METHOD_QUERY: |
| val_str = "query"; |
| break; |
| case MLXSW_REG_MFDE_METHOD_WRITE: |
| val_str = "write"; |
| break; |
| default: |
| val_str = NULL; |
| } |
| if (val_str) { |
| err = devlink_fmsg_string_pair_put(fmsg, "method", val_str); |
| if (err) |
| return err; |
| } |
| |
| val = mlxsw_reg_mfde_long_process_get(mfde_pl); |
| err = devlink_fmsg_bool_pair_put(fmsg, "long_process", val); |
| if (err) |
| return err; |
| |
| val = mlxsw_reg_mfde_command_type_get(mfde_pl); |
| switch (val) { |
| case MLXSW_REG_MFDE_COMMAND_TYPE_MAD: |
| val_str = "mad"; |
| break; |
| case MLXSW_REG_MFDE_COMMAND_TYPE_EMAD: |
| val_str = "emad"; |
| break; |
| case MLXSW_REG_MFDE_COMMAND_TYPE_CMDIF: |
| val_str = "cmdif"; |
| break; |
| default: |
| val_str = NULL; |
| } |
| if (val_str) { |
| err = devlink_fmsg_string_pair_put(fmsg, "command_type", val_str); |
| if (err) |
| return err; |
| } |
| |
| val = mlxsw_reg_mfde_reg_attr_id_get(mfde_pl); |
| err = devlink_fmsg_u32_pair_put(fmsg, "reg_attr_id", val); |
| if (err) |
| return err; |
| |
| if (event_id == MLXSW_REG_MFDE_EVENT_ID_CRSPACE_TO) { |
| val = mlxsw_reg_mfde_log_address_get(mfde_pl); |
| err = devlink_fmsg_u32_pair_put(fmsg, "log_address", val); |
| if (err) |
| return err; |
| val = mlxsw_reg_mfde_log_id_get(mfde_pl); |
| err = devlink_fmsg_u8_pair_put(fmsg, "log_irisc_id", val); |
| if (err) |
| return err; |
| val = mlxsw_reg_mfde_log_ip_get(mfde_pl); |
| err = devlink_fmsg_u64_pair_put(fmsg, "log_ip", val); |
| if (err) |
| return err; |
| } else if (event_id == MLXSW_REG_MFDE_EVENT_ID_KVD_IM_STOP) { |
| val = mlxsw_reg_mfde_pipes_mask_get(mfde_pl); |
| err = devlink_fmsg_u32_pair_put(fmsg, "pipes_mask", val); |
| if (err) |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| mlxsw_core_health_fw_fatal_test(struct devlink_health_reporter *reporter, |
| struct netlink_ext_ack *extack) |
| { |
| struct mlxsw_core *mlxsw_core = devlink_health_reporter_priv(reporter); |
| char mfgd_pl[MLXSW_REG_MFGD_LEN]; |
| int err; |
| |
| /* Read the register first to make sure no other bits are changed. */ |
| err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); |
| if (err) |
| return err; |
| mlxsw_reg_mfgd_trigger_test_set(mfgd_pl, true); |
| return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); |
| } |
| |
| static const struct devlink_health_reporter_ops |
| mlxsw_core_health_fw_fatal_ops = { |
| .name = "fw_fatal", |
| .dump = mlxsw_core_health_fw_fatal_dump, |
| .test = mlxsw_core_health_fw_fatal_test, |
| }; |
| |
| static int mlxsw_core_health_fw_fatal_config(struct mlxsw_core *mlxsw_core, |
| bool enable) |
| { |
| char mfgd_pl[MLXSW_REG_MFGD_LEN]; |
| int err; |
| |
| /* Read the register first to make sure no other bits are changed. */ |
| err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); |
| if (err) |
| return err; |
| mlxsw_reg_mfgd_fatal_event_mode_set(mfgd_pl, enable); |
| return mlxsw_reg_write(mlxsw_core, MLXSW_REG(mfgd), mfgd_pl); |
| } |
| |
| static int mlxsw_core_health_init(struct mlxsw_core *mlxsw_core) |
| { |
| struct devlink *devlink = priv_to_devlink(mlxsw_core); |
| struct devlink_health_reporter *fw_fatal; |
| int err; |
| |
| if (!mlxsw_core->driver->fw_fatal_enabled) |
| return 0; |
| |
| fw_fatal = devlink_health_reporter_create(devlink, &mlxsw_core_health_fw_fatal_ops, |
| 0, mlxsw_core); |
| if (IS_ERR(fw_fatal)) { |
| dev_err(mlxsw_core->bus_info->dev, "Failed to create fw fatal reporter"); |
| return PTR_ERR(fw_fatal); |
| } |
| mlxsw_core->health.fw_fatal = fw_fatal; |
| |
| err = mlxsw_core_trap_register(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); |
| if (err) |
| goto err_trap_register; |
| |
| err = mlxsw_core_health_fw_fatal_config(mlxsw_core, true); |
| if (err) |
| goto err_fw_fatal_config; |
| |
| return 0; |
| |
| err_fw_fatal_config: |
| mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); |
| err_trap_register: |
| devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); |
| return err; |
| } |
| |
| static void mlxsw_core_health_fini(struct mlxsw_core *mlxsw_core) |
| { |
| if (!mlxsw_core->driver->fw_fatal_enabled) |
| return; |
| |
| mlxsw_core_health_fw_fatal_config(mlxsw_core, false); |
| mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); |
| /* Make sure there is no more event work scheduled */ |
| mlxsw_core_flush_owq(); |
| devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); |
| } |
| |
| static int |
| __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, |
| const struct mlxsw_bus *mlxsw_bus, |
| void *bus_priv, bool reload, |
| struct devlink *devlink, |
| struct netlink_ext_ack *extack) |
| { |
| const char *device_kind = mlxsw_bus_info->device_kind; |
| struct mlxsw_core *mlxsw_core; |
| struct mlxsw_driver *mlxsw_driver; |
| struct mlxsw_res *res; |
| size_t alloc_size; |
| int err; |
| |
| mlxsw_driver = mlxsw_core_driver_get(device_kind); |
| if (!mlxsw_driver) |
| return -EINVAL; |
| |
| if (!reload) { |
| alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size; |
| devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size, |
| mlxsw_bus_info->dev); |
| if (!devlink) { |
| err = -ENOMEM; |
| goto err_devlink_alloc; |
| } |
| } |
| |
| mlxsw_core = devlink_priv(devlink); |
| INIT_LIST_HEAD(&mlxsw_core->rx_listener_list); |
| INIT_LIST_HEAD(&mlxsw_core->event_listener_list); |
| mlxsw_core->driver = mlxsw_driver; |
| mlxsw_core->bus = mlxsw_bus; |
| mlxsw_core->bus_priv = bus_priv; |
| mlxsw_core->bus_info = mlxsw_bus_info; |
| |
| res = mlxsw_driver->res_query_enabled ? &mlxsw_core->res : NULL; |
| err = mlxsw_bus->init(bus_priv, mlxsw_core, mlxsw_driver->profile, res); |
| if (err) |
| goto err_bus_init; |
| |
| if (mlxsw_driver->resources_register && !reload) { |
| err = mlxsw_driver->resources_register(mlxsw_core); |
| if (err) |
| goto err_register_resources; |
| } |
| |
| err = mlxsw_ports_init(mlxsw_core, reload); |
| if (err) |
| goto err_ports_init; |
| |
| if (MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG) && |
| MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG_MEMBERS)) { |
| alloc_size = sizeof(u8) * |
| MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG) * |
| MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS); |
| mlxsw_core->lag.mapping = kzalloc(alloc_size, GFP_KERNEL); |
| if (!mlxsw_core->lag.mapping) { |
| err = -ENOMEM; |
| goto err_alloc_lag_mapping; |
| } |
| } |
| |
| err = mlxsw_emad_init(mlxsw_core); |
| if (err) |
| goto err_emad_init; |
| |
| if (!reload) { |
| err = mlxsw_core_params_register(mlxsw_core); |
| if (err) |
| goto err_register_params; |
| } |
| |
| err = mlxsw_core_fw_rev_validate(mlxsw_core, mlxsw_bus_info, mlxsw_driver->fw_req_rev, |
| mlxsw_driver->fw_filename); |
| if (err) |
| goto err_fw_rev_validate; |
| |
| err = mlxsw_core_health_init(mlxsw_core); |
| if (err) |
| goto err_health_init; |
| |
| err = mlxsw_hwmon_init(mlxsw_core, mlxsw_bus_info, &mlxsw_core->hwmon); |
| if (err) |
| goto err_hwmon_init; |
| |
| err = mlxsw_thermal_init(mlxsw_core, mlxsw_bus_info, |
| &mlxsw_core->thermal); |
| if (err) |
| goto err_thermal_init; |
| |
| err = mlxsw_env_init(mlxsw_core, &mlxsw_core->env); |
| if (err) |
| goto err_env_init; |
| |
| if (mlxsw_driver->init) { |
| err = mlxsw_driver->init(mlxsw_core, mlxsw_bus_info, extack); |
| if (err) |
| goto err_driver_init; |
| } |
| |
| if (!reload) { |
| devlink_set_features(devlink, DEVLINK_F_RELOAD); |
| devlink_register(devlink); |
| } |
| return 0; |
| |
| err_driver_init: |
| mlxsw_env_fini(mlxsw_core->env); |
| err_env_init: |
| mlxsw_thermal_fini(mlxsw_core->thermal); |
| err_thermal_init: |
| mlxsw_hwmon_fini(mlxsw_core->hwmon); |
| err_hwmon_init: |
| mlxsw_core_health_fini(mlxsw_core); |
| err_health_init: |
| err_fw_rev_validate: |
| if (!reload) |
| mlxsw_core_params_unregister(mlxsw_core); |
| err_register_params: |
| mlxsw_emad_fini(mlxsw_core); |
| err_emad_init: |
| kfree(mlxsw_core->lag.mapping); |
| err_alloc_lag_mapping: |
| mlxsw_ports_fini(mlxsw_core, reload); |
| err_ports_init: |
| if (!reload) |
| devlink_resources_unregister(devlink, NULL); |
| err_register_resources: |
| mlxsw_bus->fini(bus_priv); |
| err_bus_init: |
| if (!reload) |
| devlink_free(devlink); |
| err_devlink_alloc: |
| return err; |
| } |
| |
| int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, |
| const struct mlxsw_bus *mlxsw_bus, |
| void *bus_priv, bool reload, |
| struct devlink *devlink, |
| struct netlink_ext_ack *extack) |
| { |
| bool called_again = false; |
| int err; |
| |
| again: |
| err = __mlxsw_core_bus_device_register(mlxsw_bus_info, mlxsw_bus, |
| bus_priv, reload, |
| devlink, extack); |
| /* -EAGAIN is returned in case the FW was updated. FW needs |
| * a reset, so lets try to call __mlxsw_core_bus_device_register() |
| * again. |
| */ |
| if (err == -EAGAIN && !called_again) { |
| called_again = true; |
| goto again; |
| } |
| |
| return err; |
| } |
| EXPORT_SYMBOL(mlxsw_core_bus_device_register); |
| |
| void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, |
| bool reload) |
| { |
| struct devlink *devlink = priv_to_devlink(mlxsw_core); |
| |
| if (!reload) |
| devlink_unregister(devlink); |
| |
| if (devlink_is_reload_failed(devlink)) { |
| if (!reload) |
| /* Only the parts that were not de-initialized in the |
| * failed reload attempt need to be de-initialized. |
| */ |
| goto reload_fail_deinit; |
| else |
| return; |
| } |
| |
| if (mlxsw_core->driver->fini) |
| mlxsw_core->driver->fini(mlxsw_core); |
| mlxsw_env_fini(mlxsw_core->env); |
| mlxsw_thermal_fini(mlxsw_core->thermal); |
| mlxsw_hwmon_fini(mlxsw_core->hwmon); |
| mlxsw_core_health_fini(mlxsw_core); |
| if (!reload) |
| mlxsw_core_params_unregister(mlxsw_core); |
| mlxsw_emad_fini(mlxsw_core); |
| kfree(mlxsw_core->lag.mapping); |
| mlxsw_ports_fini(mlxsw_core, reload); |
| if (!reload) |
| devlink_resources_unregister(devlink, NULL); |
| mlxsw_core->bus->fini(mlxsw_core->bus_priv); |
| if (!reload) |
| devlink_free(devlink); |
| |
| return; |
| |
| reload_fail_deinit: |
| mlxsw_core_params_unregister(mlxsw_core); |
| devlink_resources_unregister(devlink, NULL); |
| devlink_free(devlink); |
| } |
| EXPORT_SYMBOL(mlxsw_core_bus_device_unregister); |
| |
| bool mlxsw_core_skb_transmit_busy(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_tx_info *tx_info) |
| { |
| return mlxsw_core->bus->skb_transmit_busy(mlxsw_core->bus_priv, |
| tx_info); |
| } |
| EXPORT_SYMBOL(mlxsw_core_skb_transmit_busy); |
| |
| int mlxsw_core_skb_transmit(struct mlxsw_core *mlxsw_core, struct sk_buff *skb, |
| const struct mlxsw_tx_info *tx_info) |
| { |
| return mlxsw_core->bus->skb_transmit(mlxsw_core->bus_priv, skb, |
| tx_info); |
| } |
| EXPORT_SYMBOL(mlxsw_core_skb_transmit); |
| |
| void mlxsw_core_ptp_transmitted(struct mlxsw_core *mlxsw_core, |
| struct sk_buff *skb, u8 local_port) |
| { |
| if (mlxsw_core->driver->ptp_transmitted) |
| mlxsw_core->driver->ptp_transmitted(mlxsw_core, skb, |
| local_port); |
| } |
| EXPORT_SYMBOL(mlxsw_core_ptp_transmitted); |
| |
| static bool __is_rx_listener_equal(const struct mlxsw_rx_listener *rxl_a, |
| const struct mlxsw_rx_listener *rxl_b) |
| { |
| return (rxl_a->func == rxl_b->func && |
| rxl_a->local_port == rxl_b->local_port && |
| rxl_a->trap_id == rxl_b->trap_id && |
| rxl_a->mirror_reason == rxl_b->mirror_reason); |
| } |
| |
| static struct mlxsw_rx_listener_item * |
| __find_rx_listener_item(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_rx_listener *rxl) |
| { |
| struct mlxsw_rx_listener_item *rxl_item; |
| |
| list_for_each_entry(rxl_item, &mlxsw_core->rx_listener_list, list) { |
| if (__is_rx_listener_equal(&rxl_item->rxl, rxl)) |
| return rxl_item; |
| } |
| return NULL; |
| } |
| |
| int mlxsw_core_rx_listener_register(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_rx_listener *rxl, |
| void *priv, bool enabled) |
| { |
| struct mlxsw_rx_listener_item *rxl_item; |
| |
| rxl_item = __find_rx_listener_item(mlxsw_core, rxl); |
| if (rxl_item) |
| return -EEXIST; |
| rxl_item = kmalloc(sizeof(*rxl_item), GFP_KERNEL); |
| if (!rxl_item) |
| return -ENOMEM; |
| rxl_item->rxl = *rxl; |
| rxl_item->priv = priv; |
| rxl_item->enabled = enabled; |
| |
| list_add_rcu(&rxl_item->list, &mlxsw_core->rx_listener_list); |
| return 0; |
| } |
| EXPORT_SYMBOL(mlxsw_core_rx_listener_register); |
| |
| void mlxsw_core_rx_listener_unregister(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_rx_listener *rxl) |
| { |
| struct mlxsw_rx_listener_item *rxl_item; |
| |
| rxl_item = __find_rx_listener_item(mlxsw_core, rxl); |
| if (!rxl_item) |
| return; |
| list_del_rcu(&rxl_item->list); |
| synchronize_rcu(); |
| kfree(rxl_item); |
| } |
| EXPORT_SYMBOL(mlxsw_core_rx_listener_unregister); |
| |
| static void |
| mlxsw_core_rx_listener_state_set(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_rx_listener *rxl, |
| bool enabled) |
| { |
| struct mlxsw_rx_listener_item *rxl_item; |
| |
| rxl_item = __find_rx_listener_item(mlxsw_core, rxl); |
| if (WARN_ON(!rxl_item)) |
| return; |
| rxl_item->enabled = enabled; |
| } |
| |
| static void mlxsw_core_event_listener_func(struct sk_buff *skb, u8 local_port, |
| void *priv) |
| { |
| struct mlxsw_event_listener_item *event_listener_item = priv; |
| struct mlxsw_core *mlxsw_core; |
| struct mlxsw_reg_info reg; |
| char *payload; |
| char *reg_tlv; |
| char *op_tlv; |
| |
| mlxsw_core = event_listener_item->mlxsw_core; |
| trace_devlink_hwmsg(priv_to_devlink(mlxsw_core), true, 0, |
| skb->data, skb->len); |
| |
| mlxsw_emad_tlv_parse(skb); |
| op_tlv = mlxsw_emad_op_tlv(skb); |
| reg_tlv = mlxsw_emad_reg_tlv(skb); |
| |
| reg.id = mlxsw_emad_op_tlv_register_id_get(op_tlv); |
| reg.len = (mlxsw_emad_reg_tlv_len_get(reg_tlv) - 1) * sizeof(u32); |
| payload = mlxsw_emad_reg_payload(reg_tlv); |
| event_listener_item->el.func(®, payload, event_listener_item->priv); |
| dev_kfree_skb(skb); |
| } |
| |
| static bool __is_event_listener_equal(const struct mlxsw_event_listener *el_a, |
| const struct mlxsw_event_listener *el_b) |
| { |
| return (el_a->func == el_b->func && |
| el_a->trap_id == el_b->trap_id); |
| } |
| |
| static struct mlxsw_event_listener_item * |
| __find_event_listener_item(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_event_listener *el) |
| { |
| struct mlxsw_event_listener_item *el_item; |
| |
| list_for_each_entry(el_item, &mlxsw_core->event_listener_list, list) { |
| if (__is_event_listener_equal(&el_item->el, el)) |
| return el_item; |
| } |
| return NULL; |
| } |
| |
| int mlxsw_core_event_listener_register(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_event_listener *el, |
| void *priv) |
| { |
| int err; |
| struct mlxsw_event_listener_item *el_item; |
| const struct mlxsw_rx_listener rxl = { |
| .func = mlxsw_core_event_listener_func, |
| .local_port = MLXSW_PORT_DONT_CARE, |
| .trap_id = el->trap_id, |
| }; |
| |
| el_item = __find_event_listener_item(mlxsw_core, el); |
| if (el_item) |
| return -EEXIST; |
| el_item = kmalloc(sizeof(*el_item), GFP_KERNEL); |
| if (!el_item) |
| return -ENOMEM; |
| el_item->mlxsw_core = mlxsw_core; |
| el_item->el = *el; |
| el_item->priv = priv; |
| |
| err = mlxsw_core_rx_listener_register(mlxsw_core, &rxl, el_item, true); |
| if (err) |
| goto err_rx_listener_register; |
| |
| /* No reason to save item if we did not manage to register an RX |
| * listener for it. |
| */ |
| list_add_rcu(&el_item->list, &mlxsw_core->event_listener_list); |
| |
| return 0; |
| |
| err_rx_listener_register: |
| kfree(el_item); |
| return err; |
| } |
| EXPORT_SYMBOL(mlxsw_core_event_listener_register); |
| |
| void mlxsw_core_event_listener_unregister(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_event_listener *el) |
| { |
| struct mlxsw_event_listener_item *el_item; |
| const struct mlxsw_rx_listener rxl = { |
| .func = mlxsw_core_event_listener_func, |
| .local_port = MLXSW_PORT_DONT_CARE, |
| .trap_id = el->trap_id, |
| }; |
| |
| el_item = __find_event_listener_item(mlxsw_core, el); |
| if (!el_item) |
| return; |
| mlxsw_core_rx_listener_unregister(mlxsw_core, &rxl); |
| list_del(&el_item->list); |
| kfree(el_item); |
| } |
| EXPORT_SYMBOL(mlxsw_core_event_listener_unregister); |
| |
| static int mlxsw_core_listener_register(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_listener *listener, |
| void *priv, bool enabled) |
| { |
| if (listener->is_event) { |
| WARN_ON(!enabled); |
| return mlxsw_core_event_listener_register(mlxsw_core, |
| &listener->event_listener, |
| priv); |
| } else { |
| return mlxsw_core_rx_listener_register(mlxsw_core, |
| &listener->rx_listener, |
| priv, enabled); |
| } |
| } |
| |
| static void mlxsw_core_listener_unregister(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_listener *listener, |
| void *priv) |
| { |
| if (listener->is_event) |
| mlxsw_core_event_listener_unregister(mlxsw_core, |
| &listener->event_listener); |
| else |
| mlxsw_core_rx_listener_unregister(mlxsw_core, |
| &listener->rx_listener); |
| } |
| |
| int mlxsw_core_trap_register(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_listener *listener, void *priv) |
| { |
| enum mlxsw_reg_htgt_trap_group trap_group; |
| enum mlxsw_reg_hpkt_action action; |
| char hpkt_pl[MLXSW_REG_HPKT_LEN]; |
| int err; |
| |
| err = mlxsw_core_listener_register(mlxsw_core, listener, priv, |
| listener->enabled_on_register); |
| if (err) |
| return err; |
| |
| action = listener->enabled_on_register ? listener->en_action : |
| listener->dis_action; |
| trap_group = listener->enabled_on_register ? listener->en_trap_group : |
| listener->dis_trap_group; |
| mlxsw_reg_hpkt_pack(hpkt_pl, action, listener->trap_id, |
| trap_group, listener->is_ctrl); |
| err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); |
| if (err) |
| goto err_trap_set; |
| |
| return 0; |
| |
| err_trap_set: |
| mlxsw_core_listener_unregister(mlxsw_core, listener, priv); |
| return err; |
| } |
| EXPORT_SYMBOL(mlxsw_core_trap_register); |
| |
| void mlxsw_core_trap_unregister(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_listener *listener, |
| void *priv) |
| { |
| char hpkt_pl[MLXSW_REG_HPKT_LEN]; |
| |
| if (!listener->is_event) { |
| mlxsw_reg_hpkt_pack(hpkt_pl, listener->dis_action, |
| listener->trap_id, listener->dis_trap_group, |
| listener->is_ctrl); |
| mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); |
| } |
| |
| mlxsw_core_listener_unregister(mlxsw_core, listener, priv); |
| } |
| EXPORT_SYMBOL(mlxsw_core_trap_unregister); |
| |
| int mlxsw_core_trap_state_set(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_listener *listener, |
| bool enabled) |
| { |
| enum mlxsw_reg_htgt_trap_group trap_group; |
| enum mlxsw_reg_hpkt_action action; |
| char hpkt_pl[MLXSW_REG_HPKT_LEN]; |
| int err; |
| |
| /* Not supported for event listener */ |
| if (WARN_ON(listener->is_event)) |
| return -EINVAL; |
| |
| action = enabled ? listener->en_action : listener->dis_action; |
| trap_group = enabled ? listener->en_trap_group : |
| listener->dis_trap_group; |
| mlxsw_reg_hpkt_pack(hpkt_pl, action, listener->trap_id, |
| trap_group, listener->is_ctrl); |
| err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(hpkt), hpkt_pl); |
| if (err) |
| return err; |
| |
| mlxsw_core_rx_listener_state_set(mlxsw_core, &listener->rx_listener, |
| enabled); |
| return 0; |
| } |
| EXPORT_SYMBOL(mlxsw_core_trap_state_set); |
| |
| static u64 mlxsw_core_tid_get(struct mlxsw_core *mlxsw_core) |
| { |
| return atomic64_inc_return(&mlxsw_core->emad.tid); |
| } |
| |
| static int mlxsw_core_reg_access_emad(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, |
| char *payload, |
| enum mlxsw_core_reg_access_type type, |
| struct list_head *bulk_list, |
| mlxsw_reg_trans_cb_t *cb, |
| unsigned long cb_priv) |
| { |
| u64 tid = mlxsw_core_tid_get(mlxsw_core); |
| struct mlxsw_reg_trans *trans; |
| int err; |
| |
| trans = kzalloc(sizeof(*trans), GFP_KERNEL); |
| if (!trans) |
| return -ENOMEM; |
| |
| err = mlxsw_emad_reg_access(mlxsw_core, reg, payload, type, trans, |
| bulk_list, cb, cb_priv, tid); |
| if (err) { |
| kfree_rcu(trans, rcu); |
| return err; |
| } |
| return 0; |
| } |
| |
| int mlxsw_reg_trans_query(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, char *payload, |
| struct list_head *bulk_list, |
| mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv) |
| { |
| return mlxsw_core_reg_access_emad(mlxsw_core, reg, payload, |
| MLXSW_CORE_REG_ACCESS_TYPE_QUERY, |
| bulk_list, cb, cb_priv); |
| } |
| EXPORT_SYMBOL(mlxsw_reg_trans_query); |
| |
| int mlxsw_reg_trans_write(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, char *payload, |
| struct list_head *bulk_list, |
| mlxsw_reg_trans_cb_t *cb, unsigned long cb_priv) |
| { |
| return mlxsw_core_reg_access_emad(mlxsw_core, reg, payload, |
| MLXSW_CORE_REG_ACCESS_TYPE_WRITE, |
| bulk_list, cb, cb_priv); |
| } |
| EXPORT_SYMBOL(mlxsw_reg_trans_write); |
| |
| #define MLXSW_REG_TRANS_ERR_STRING_SIZE 256 |
| |
| static int mlxsw_reg_trans_wait(struct mlxsw_reg_trans *trans) |
| { |
| char err_string[MLXSW_REG_TRANS_ERR_STRING_SIZE]; |
| struct mlxsw_core *mlxsw_core = trans->core; |
| int err; |
| |
| wait_for_completion(&trans->completion); |
| cancel_delayed_work_sync(&trans->timeout_dw); |
| err = trans->err; |
| |
| if (trans->retries) |
| dev_warn(mlxsw_core->bus_info->dev, "EMAD retries (%d/%d) (tid=%llx)\n", |
| trans->retries, MLXSW_EMAD_MAX_RETRY, trans->tid); |
| if (err) { |
| dev_err(mlxsw_core->bus_info->dev, "EMAD reg access failed (tid=%llx,reg_id=%x(%s),type=%s,status=%x(%s))\n", |
| trans->tid, trans->reg->id, |
| mlxsw_reg_id_str(trans->reg->id), |
| mlxsw_core_reg_access_type_str(trans->type), |
| trans->emad_status, |
| mlxsw_emad_op_tlv_status_str(trans->emad_status)); |
| |
| snprintf(err_string, MLXSW_REG_TRANS_ERR_STRING_SIZE, |
| "(tid=%llx,reg_id=%x(%s)) %s (%s)\n", trans->tid, |
| trans->reg->id, mlxsw_reg_id_str(trans->reg->id), |
| mlxsw_emad_op_tlv_status_str(trans->emad_status), |
| trans->emad_err_string ? trans->emad_err_string : ""); |
| |
| trace_devlink_hwerr(priv_to_devlink(mlxsw_core), |
| trans->emad_status, err_string); |
| |
| kfree(trans->emad_err_string); |
| } |
| |
| list_del(&trans->bulk_list); |
| kfree_rcu(trans, rcu); |
| return err; |
| } |
| |
| int mlxsw_reg_trans_bulk_wait(struct list_head *bulk_list) |
| { |
| struct mlxsw_reg_trans *trans; |
| struct mlxsw_reg_trans *tmp; |
| int sum_err = 0; |
| int err; |
| |
| list_for_each_entry_safe(trans, tmp, bulk_list, bulk_list) { |
| err = mlxsw_reg_trans_wait(trans); |
| if (err && sum_err == 0) |
| sum_err = err; /* first error to be returned */ |
| } |
| return sum_err; |
| } |
| EXPORT_SYMBOL(mlxsw_reg_trans_bulk_wait); |
| |
| static int mlxsw_core_reg_access_cmd(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, |
| char *payload, |
| enum mlxsw_core_reg_access_type type) |
| { |
| enum mlxsw_emad_op_tlv_status status; |
| int err, n_retry; |
| bool reset_ok; |
| char *in_mbox, *out_mbox, *tmp; |
| |
| dev_dbg(mlxsw_core->bus_info->dev, "Reg cmd access (reg_id=%x(%s),type=%s)\n", |
| reg->id, mlxsw_reg_id_str(reg->id), |
| mlxsw_core_reg_access_type_str(type)); |
| |
| in_mbox = mlxsw_cmd_mbox_alloc(); |
| if (!in_mbox) |
| return -ENOMEM; |
| |
| out_mbox = mlxsw_cmd_mbox_alloc(); |
| if (!out_mbox) { |
| err = -ENOMEM; |
| goto free_in_mbox; |
| } |
| |
| mlxsw_emad_pack_op_tlv(in_mbox, reg, type, |
| mlxsw_core_tid_get(mlxsw_core)); |
| tmp = in_mbox + MLXSW_EMAD_OP_TLV_LEN * sizeof(u32); |
| mlxsw_emad_pack_reg_tlv(tmp, reg, payload); |
| |
| /* There is a special treatment needed for MRSR (reset) register. |
| * The command interface will return error after the command |
| * is executed, so tell the lower layer to expect it |
| * and cope accordingly. |
| */ |
| reset_ok = reg->id == MLXSW_REG_MRSR_ID; |
| |
| n_retry = 0; |
| retry: |
| err = mlxsw_cmd_access_reg(mlxsw_core, reset_ok, in_mbox, out_mbox); |
| if (!err) { |
| err = mlxsw_emad_process_status(out_mbox, &status); |
| if (err) { |
| if (err == -EAGAIN && n_retry++ < MLXSW_EMAD_MAX_RETRY) |
| goto retry; |
| dev_err(mlxsw_core->bus_info->dev, "Reg cmd access status failed (status=%x(%s))\n", |
| status, mlxsw_emad_op_tlv_status_str(status)); |
| } |
| } |
| |
| if (!err) |
| memcpy(payload, mlxsw_emad_reg_payload_cmd(out_mbox), |
| reg->len); |
| |
| mlxsw_cmd_mbox_free(out_mbox); |
| free_in_mbox: |
| mlxsw_cmd_mbox_free(in_mbox); |
| if (err) |
| dev_err(mlxsw_core->bus_info->dev, "Reg cmd access failed (reg_id=%x(%s),type=%s)\n", |
| reg->id, mlxsw_reg_id_str(reg->id), |
| mlxsw_core_reg_access_type_str(type)); |
| return err; |
| } |
| |
| static void mlxsw_core_reg_access_cb(struct mlxsw_core *mlxsw_core, |
| char *payload, size_t payload_len, |
| unsigned long cb_priv) |
| { |
| char *orig_payload = (char *) cb_priv; |
| |
| memcpy(orig_payload, payload, payload_len); |
| } |
| |
| static int mlxsw_core_reg_access(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, |
| char *payload, |
| enum mlxsw_core_reg_access_type type) |
| { |
| LIST_HEAD(bulk_list); |
| int err; |
| |
| /* During initialization EMAD interface is not available to us, |
| * so we default to command interface. We switch to EMAD interface |
| * after setting the appropriate traps. |
| */ |
| if (!mlxsw_core->emad.use_emad) |
| return mlxsw_core_reg_access_cmd(mlxsw_core, reg, |
| payload, type); |
| |
| err = mlxsw_core_reg_access_emad(mlxsw_core, reg, |
| payload, type, &bulk_list, |
| mlxsw_core_reg_access_cb, |
| (unsigned long) payload); |
| if (err) |
| return err; |
| return mlxsw_reg_trans_bulk_wait(&bulk_list); |
| } |
| |
| int mlxsw_reg_query(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, char *payload) |
| { |
| return mlxsw_core_reg_access(mlxsw_core, reg, payload, |
| MLXSW_CORE_REG_ACCESS_TYPE_QUERY); |
| } |
| EXPORT_SYMBOL(mlxsw_reg_query); |
| |
| int mlxsw_reg_write(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_reg_info *reg, char *payload) |
| { |
| return mlxsw_core_reg_access(mlxsw_core, reg, payload, |
| MLXSW_CORE_REG_ACCESS_TYPE_WRITE); |
| } |
| EXPORT_SYMBOL(mlxsw_reg_write); |
| |
| void mlxsw_core_skb_receive(struct mlxsw_core *mlxsw_core, struct sk_buff *skb, |
| struct mlxsw_rx_info *rx_info) |
| { |
| struct mlxsw_rx_listener_item *rxl_item; |
| const struct mlxsw_rx_listener *rxl; |
| u8 local_port; |
| bool found = false; |
| |
| if (rx_info->is_lag) { |
| dev_dbg_ratelimited(mlxsw_core->bus_info->dev, "%s: lag_id = %d, lag_port_index = 0x%x\n", |
| __func__, rx_info->u.lag_id, |
| rx_info->trap_id); |
| /* Upper layer does not care if the skb came from LAG or not, |
| * so just get the local_port for the lag port and push it up. |
| */ |
| local_port = mlxsw_core_lag_mapping_get(mlxsw_core, |
| rx_info->u.lag_id, |
| rx_info->lag_port_index); |
| } else { |
| local_port = rx_info->u.sys_port; |
| } |
| |
| dev_dbg_ratelimited(mlxsw_core->bus_info->dev, "%s: local_port = %d, trap_id = 0x%x\n", |
| __func__, local_port, rx_info->trap_id); |
| |
| if ((rx_info->trap_id >= MLXSW_TRAP_ID_MAX) || |
| (local_port >= mlxsw_core->max_ports)) |
| goto drop; |
| |
| rcu_read_lock(); |
| list_for_each_entry_rcu(rxl_item, &mlxsw_core->rx_listener_list, list) { |
| rxl = &rxl_item->rxl; |
| if ((rxl->local_port == MLXSW_PORT_DONT_CARE || |
| rxl->local_port == local_port) && |
| rxl->trap_id == rx_info->trap_id && |
| rxl->mirror_reason == rx_info->mirror_reason) { |
| if (rxl_item->enabled) |
| found = true; |
| break; |
| } |
| } |
| if (!found) { |
| rcu_read_unlock(); |
| goto drop; |
| } |
| |
| rxl->func(skb, local_port, rxl_item->priv); |
| rcu_read_unlock(); |
| return; |
| |
| drop: |
| dev_kfree_skb(skb); |
| } |
| EXPORT_SYMBOL(mlxsw_core_skb_receive); |
| |
| static int mlxsw_core_lag_mapping_index(struct mlxsw_core *mlxsw_core, |
| u16 lag_id, u8 port_index) |
| { |
| return MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS) * lag_id + |
| port_index; |
| } |
| |
| void mlxsw_core_lag_mapping_set(struct mlxsw_core *mlxsw_core, |
| u16 lag_id, u8 port_index, u8 local_port) |
| { |
| int index = mlxsw_core_lag_mapping_index(mlxsw_core, |
| lag_id, port_index); |
| |
| mlxsw_core->lag.mapping[index] = local_port; |
| } |
| EXPORT_SYMBOL(mlxsw_core_lag_mapping_set); |
| |
| u8 mlxsw_core_lag_mapping_get(struct mlxsw_core *mlxsw_core, |
| u16 lag_id, u8 port_index) |
| { |
| int index = mlxsw_core_lag_mapping_index(mlxsw_core, |
| lag_id, port_index); |
| |
| return mlxsw_core->lag.mapping[index]; |
| } |
| EXPORT_SYMBOL(mlxsw_core_lag_mapping_get); |
| |
| void mlxsw_core_lag_mapping_clear(struct mlxsw_core *mlxsw_core, |
| u16 lag_id, u8 local_port) |
| { |
| int i; |
| |
| for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG_MEMBERS); i++) { |
| int index = mlxsw_core_lag_mapping_index(mlxsw_core, |
| lag_id, i); |
| |
| if (mlxsw_core->lag.mapping[index] == local_port) |
| mlxsw_core->lag.mapping[index] = 0; |
| } |
| } |
| EXPORT_SYMBOL(mlxsw_core_lag_mapping_clear); |
| |
| bool mlxsw_core_res_valid(struct mlxsw_core *mlxsw_core, |
| enum mlxsw_res_id res_id) |
| { |
| return mlxsw_res_valid(&mlxsw_core->res, res_id); |
| } |
| EXPORT_SYMBOL(mlxsw_core_res_valid); |
| |
| u64 mlxsw_core_res_get(struct mlxsw_core *mlxsw_core, |
| enum mlxsw_res_id res_id) |
| { |
| return mlxsw_res_get(&mlxsw_core->res, res_id); |
| } |
| EXPORT_SYMBOL(mlxsw_core_res_get); |
| |
| static int __mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u8 local_port, |
| enum devlink_port_flavour flavour, |
| u32 port_number, bool split, |
| u32 split_port_subnumber, |
| bool splittable, u32 lanes, |
| const unsigned char *switch_id, |
| unsigned char switch_id_len) |
| { |
| struct devlink *devlink = priv_to_devlink(mlxsw_core); |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[local_port]; |
| struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; |
| struct devlink_port_attrs attrs = {}; |
| int err; |
| |
| attrs.split = split; |
| attrs.lanes = lanes; |
| attrs.splittable = splittable; |
| attrs.flavour = flavour; |
| attrs.phys.port_number = port_number; |
| attrs.phys.split_subport_number = split_port_subnumber; |
| memcpy(attrs.switch_id.id, switch_id, switch_id_len); |
| attrs.switch_id.id_len = switch_id_len; |
| mlxsw_core_port->local_port = local_port; |
| devlink_port_attrs_set(devlink_port, &attrs); |
| err = devlink_port_register(devlink, devlink_port, local_port); |
| if (err) |
| memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port)); |
| return err; |
| } |
| |
| static void __mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u8 local_port) |
| { |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[local_port]; |
| struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; |
| |
| devlink_port_unregister(devlink_port); |
| memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port)); |
| } |
| |
| int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u8 local_port, |
| u32 port_number, bool split, |
| u32 split_port_subnumber, |
| bool splittable, u32 lanes, |
| const unsigned char *switch_id, |
| unsigned char switch_id_len) |
| { |
| int err; |
| |
| err = __mlxsw_core_port_init(mlxsw_core, local_port, |
| DEVLINK_PORT_FLAVOUR_PHYSICAL, |
| port_number, split, split_port_subnumber, |
| splittable, lanes, |
| switch_id, switch_id_len); |
| if (err) |
| return err; |
| |
| atomic_inc(&mlxsw_core->active_ports_count); |
| return 0; |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_init); |
| |
| void mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u8 local_port) |
| { |
| atomic_dec(&mlxsw_core->active_ports_count); |
| |
| __mlxsw_core_port_fini(mlxsw_core, local_port); |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_fini); |
| |
| int mlxsw_core_cpu_port_init(struct mlxsw_core *mlxsw_core, |
| void *port_driver_priv, |
| const unsigned char *switch_id, |
| unsigned char switch_id_len) |
| { |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[MLXSW_PORT_CPU_PORT]; |
| int err; |
| |
| err = __mlxsw_core_port_init(mlxsw_core, MLXSW_PORT_CPU_PORT, |
| DEVLINK_PORT_FLAVOUR_CPU, |
| 0, false, 0, false, 0, |
| switch_id, switch_id_len); |
| if (err) |
| return err; |
| |
| mlxsw_core_port->port_driver_priv = port_driver_priv; |
| return 0; |
| } |
| EXPORT_SYMBOL(mlxsw_core_cpu_port_init); |
| |
| void mlxsw_core_cpu_port_fini(struct mlxsw_core *mlxsw_core) |
| { |
| __mlxsw_core_port_fini(mlxsw_core, MLXSW_PORT_CPU_PORT); |
| } |
| EXPORT_SYMBOL(mlxsw_core_cpu_port_fini); |
| |
| void mlxsw_core_port_eth_set(struct mlxsw_core *mlxsw_core, u8 local_port, |
| void *port_driver_priv, struct net_device *dev) |
| { |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[local_port]; |
| struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; |
| |
| mlxsw_core_port->port_driver_priv = port_driver_priv; |
| devlink_port_type_eth_set(devlink_port, dev); |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_eth_set); |
| |
| void mlxsw_core_port_ib_set(struct mlxsw_core *mlxsw_core, u8 local_port, |
| void *port_driver_priv) |
| { |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[local_port]; |
| struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; |
| |
| mlxsw_core_port->port_driver_priv = port_driver_priv; |
| devlink_port_type_ib_set(devlink_port, NULL); |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_ib_set); |
| |
| void mlxsw_core_port_clear(struct mlxsw_core *mlxsw_core, u8 local_port, |
| void *port_driver_priv) |
| { |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[local_port]; |
| struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; |
| |
| mlxsw_core_port->port_driver_priv = port_driver_priv; |
| devlink_port_type_clear(devlink_port); |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_clear); |
| |
| enum devlink_port_type mlxsw_core_port_type_get(struct mlxsw_core *mlxsw_core, |
| u8 local_port) |
| { |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[local_port]; |
| struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; |
| |
| return devlink_port->type; |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_type_get); |
| |
| |
| struct devlink_port * |
| mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core, |
| u8 local_port) |
| { |
| struct mlxsw_core_port *mlxsw_core_port = |
| &mlxsw_core->ports[local_port]; |
| struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port; |
| |
| return devlink_port; |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_devlink_port_get); |
| |
| bool mlxsw_core_port_is_xm(const struct mlxsw_core *mlxsw_core, u8 local_port) |
| { |
| const struct mlxsw_bus_info *bus_info = mlxsw_core->bus_info; |
| int i; |
| |
| for (i = 0; i < bus_info->xm_local_ports_count; i++) |
| if (bus_info->xm_local_ports[i] == local_port) |
| return true; |
| return false; |
| } |
| EXPORT_SYMBOL(mlxsw_core_port_is_xm); |
| |
| struct mlxsw_env *mlxsw_core_env(const struct mlxsw_core *mlxsw_core) |
| { |
| return mlxsw_core->env; |
| } |
| |
| static void mlxsw_core_buf_dump_dbg(struct mlxsw_core *mlxsw_core, |
| const char *buf, size_t size) |
| { |
| __be32 *m = (__be32 *) buf; |
| int i; |
| int count = size / sizeof(__be32); |
| |
| for (i = count - 1; i >= 0; i--) |
| if (m[i]) |
| break; |
| i++; |
| count = i ? i : 1; |
| for (i = 0; i < count; i += 4) |
| dev_dbg(mlxsw_core->bus_info->dev, "%04x - %08x %08x %08x %08x\n", |
| i * 4, be32_to_cpu(m[i]), be32_to_cpu(m[i + 1]), |
| be32_to_cpu(m[i + 2]), be32_to_cpu(m[i + 3])); |
| } |
| |
| int mlxsw_cmd_exec(struct mlxsw_core *mlxsw_core, u16 opcode, u8 opcode_mod, |
| u32 in_mod, bool out_mbox_direct, bool reset_ok, |
| char *in_mbox, size_t in_mbox_size, |
| char *out_mbox, size_t out_mbox_size) |
| { |
| u8 status; |
| int err; |
| |
| BUG_ON(in_mbox_size % sizeof(u32) || out_mbox_size % sizeof(u32)); |
| if (!mlxsw_core->bus->cmd_exec) |
| return -EOPNOTSUPP; |
| |
| dev_dbg(mlxsw_core->bus_info->dev, "Cmd exec (opcode=%x(%s),opcode_mod=%x,in_mod=%x)\n", |
| opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, in_mod); |
| if (in_mbox) { |
| dev_dbg(mlxsw_core->bus_info->dev, "Input mailbox:\n"); |
| mlxsw_core_buf_dump_dbg(mlxsw_core, in_mbox, in_mbox_size); |
| } |
| |
| err = mlxsw_core->bus->cmd_exec(mlxsw_core->bus_priv, opcode, |
| opcode_mod, in_mod, out_mbox_direct, |
| in_mbox, in_mbox_size, |
| out_mbox, out_mbox_size, &status); |
| |
| if (!err && out_mbox) { |
| dev_dbg(mlxsw_core->bus_info->dev, "Output mailbox:\n"); |
| mlxsw_core_buf_dump_dbg(mlxsw_core, out_mbox, out_mbox_size); |
| } |
| |
| if (reset_ok && err == -EIO && |
| status == MLXSW_CMD_STATUS_RUNNING_RESET) { |
| err = 0; |
| } else if (err == -EIO && status != MLXSW_CMD_STATUS_OK) { |
| dev_err(mlxsw_core->bus_info->dev, "Cmd exec failed (opcode=%x(%s),opcode_mod=%x,in_mod=%x,status=%x(%s))\n", |
| opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, |
| in_mod, status, mlxsw_cmd_status_str(status)); |
| } else if (err == -ETIMEDOUT) { |
| dev_err(mlxsw_core->bus_info->dev, "Cmd exec timed-out (opcode=%x(%s),opcode_mod=%x,in_mod=%x)\n", |
| opcode, mlxsw_cmd_opcode_str(opcode), opcode_mod, |
| in_mod); |
| } |
| |
| return err; |
| } |
| EXPORT_SYMBOL(mlxsw_cmd_exec); |
| |
| int mlxsw_core_schedule_dw(struct delayed_work *dwork, unsigned long delay) |
| { |
| return queue_delayed_work(mlxsw_wq, dwork, delay); |
| } |
| EXPORT_SYMBOL(mlxsw_core_schedule_dw); |
| |
| bool mlxsw_core_schedule_work(struct work_struct *work) |
| { |
| return queue_work(mlxsw_owq, work); |
| } |
| EXPORT_SYMBOL(mlxsw_core_schedule_work); |
| |
| void mlxsw_core_flush_owq(void) |
| { |
| flush_workqueue(mlxsw_owq); |
| } |
| EXPORT_SYMBOL(mlxsw_core_flush_owq); |
| |
| int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, |
| const struct mlxsw_config_profile *profile, |
| u64 *p_single_size, u64 *p_double_size, |
| u64 *p_linear_size) |
| { |
| struct mlxsw_driver *driver = mlxsw_core->driver; |
| |
| if (!driver->kvd_sizes_get) |
| return -EINVAL; |
| |
| return driver->kvd_sizes_get(mlxsw_core, profile, |
| p_single_size, p_double_size, |
| p_linear_size); |
| } |
| EXPORT_SYMBOL(mlxsw_core_kvd_sizes_get); |
| |
| int mlxsw_core_resources_query(struct mlxsw_core *mlxsw_core, char *mbox, |
| struct mlxsw_res *res) |
| { |
| int index, i; |
| u64 data; |
| u16 id; |
| int err; |
| |
| if (!res) |
| return 0; |
| |
| mlxsw_cmd_mbox_zero(mbox); |
| |
| for (index = 0; index < MLXSW_CMD_QUERY_RESOURCES_MAX_QUERIES; |
| index++) { |
| err = mlxsw_cmd_query_resources(mlxsw_core, mbox, index); |
| if (err) |
| return err; |
| |
| for (i = 0; i < MLXSW_CMD_QUERY_RESOURCES_PER_QUERY; i++) { |
| id = mlxsw_cmd_mbox_query_resource_id_get(mbox, i); |
| data = mlxsw_cmd_mbox_query_resource_data_get(mbox, i); |
| |
| if (id == MLXSW_CMD_QUERY_RESOURCES_TABLE_END_ID) |
| return 0; |
| |
| mlxsw_res_parse(res, id, data); |
| } |
| } |
| |
| /* If after MLXSW_RESOURCES_QUERY_MAX_QUERIES we still didn't get |
| * MLXSW_RESOURCES_TABLE_END_ID, something went bad in the FW. |
| */ |
| return -EIO; |
| } |
| EXPORT_SYMBOL(mlxsw_core_resources_query); |
| |
| u32 mlxsw_core_read_frc_h(struct mlxsw_core *mlxsw_core) |
| { |
| return mlxsw_core->bus->read_frc_h(mlxsw_core->bus_priv); |
| } |
| EXPORT_SYMBOL(mlxsw_core_read_frc_h); |
| |
| u32 mlxsw_core_read_frc_l(struct mlxsw_core *mlxsw_core) |
| { |
| return mlxsw_core->bus->read_frc_l(mlxsw_core->bus_priv); |
| } |
| EXPORT_SYMBOL(mlxsw_core_read_frc_l); |
| |
| void mlxsw_core_emad_string_tlv_enable(struct mlxsw_core *mlxsw_core) |
| { |
| mlxsw_core->emad.enable_string_tlv = true; |
| } |
| EXPORT_SYMBOL(mlxsw_core_emad_string_tlv_enable); |
| |
| static int __init mlxsw_core_module_init(void) |
| { |
| int err; |
| |
| mlxsw_wq = alloc_workqueue(mlxsw_core_driver_name, 0, 0); |
| if (!mlxsw_wq) |
| return -ENOMEM; |
| mlxsw_owq = alloc_ordered_workqueue("%s_ordered", 0, |
| mlxsw_core_driver_name); |
| if (!mlxsw_owq) { |
| err = -ENOMEM; |
| goto err_alloc_ordered_workqueue; |
| } |
| return 0; |
| |
| err_alloc_ordered_workqueue: |
| destroy_workqueue(mlxsw_wq); |
| return err; |
| } |
| |
| static void __exit mlxsw_core_module_exit(void) |
| { |
| destroy_workqueue(mlxsw_owq); |
| destroy_workqueue(mlxsw_wq); |
| } |
| |
| module_init(mlxsw_core_module_init); |
| module_exit(mlxsw_core_module_exit); |
| |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>"); |
| MODULE_DESCRIPTION("Mellanox switch device core driver"); |