#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"
#include "txheader.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;
u16 local_port;
struct mlxsw_linecard *linecard;
};
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 list_head irq_event_handler_list;
struct mutex irq_event_handler_lock;
struct {
atomic64_t tid;
struct list_head trans_list;
spinlock_t trans_list_lock;
bool use_emad;
bool enable_string_tlv;
bool enable_latency_tlv;
} emad;
struct {
u16 *mapping;
} lag;
struct mlxsw_res res;
struct mlxsw_hwmon *hwmon;
struct mlxsw_thermal *thermal;
struct mlxsw_linecards *linecards;
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[];
};
struct mlxsw_linecards *mlxsw_core_linecards(struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->linecards;
}
void mlxsw_core_linecards_set(struct mlxsw_core *mlxsw_core,
struct mlxsw_linecards *linecards)
{
mlxsw_core->linecards = linecards;
}
#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 devl_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;
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 = kzalloc_objs(struct mlxsw_core_port,
mlxsw_core->max_ports);
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);
devl_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);
devl_resource_occ_get_unregister(devlink, MLXSW_CORE_RESOURCE_PORTS);
if (!reload)
devl_resources_unregister(priv_to_devlink(mlxsw_core));
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);
int mlxsw_core_max_lag(struct mlxsw_core *mlxsw_core, u16 *p_max_lag)
{
struct mlxsw_driver *driver = mlxsw_core->driver;
if (driver->profile->used_max_lag) {
*p_max_lag = driver->profile->max_lag;
return 0;
}
if (!MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG))
return -EIO;
*p_max_lag = MLXSW_CORE_RES_GET(mlxsw_core, MAX_LAG);
return 0;
}
EXPORT_SYMBOL(mlxsw_core_max_lag);
enum mlxsw_cmd_mbox_config_profile_lag_mode
mlxsw_core_lag_mode(struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->bus->lag_mode(mlxsw_core->bus_priv);
}
EXPORT_SYMBOL(mlxsw_core_lag_mode);
enum mlxsw_cmd_mbox_config_profile_flood_mode
mlxsw_core_flood_mode(struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->bus->flood_mode(mlxsw_core->bus_priv);
}
EXPORT_SYMBOL(mlxsw_core_flood_mode);
void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->driver_priv;
}
EXPORT_SYMBOL(mlxsw_core_driver_priv);
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;
};
static const u8 mlxsw_core_trap_groups[] = {
MLXSW_REG_HTGT_TRAP_GROUP_EMAD,
MLXSW_REG_HTGT_TRAP_GROUP_CORE_EVENT,
};
static int mlxsw_core_trap_groups_set(struct mlxsw_core *mlxsw_core)
{
char htgt_pl[MLXSW_REG_HTGT_LEN];
int err;
int i;
if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX))
return 0;
for (i = 0; i < ARRAY_SIZE(mlxsw_core_trap_groups); i++) {
mlxsw_reg_htgt_pack(htgt_pl, mlxsw_core_trap_groups[i],
MLXSW_REG_HTGT_INVALID_POLICER,
MLXSW_REG_HTGT_DEFAULT_PRIORITY,
MLXSW_REG_HTGT_DEFAULT_TC);
err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
if (err)
return err;
}
return 0;
}
MLXSW_ITEM_BUF(emad, eth_hdr, dmac, 0x00, 6);
MLXSW_ITEM_BUF(emad, eth_hdr, smac, 0x06, 6);
MLXSW_ITEM32(emad, eth_hdr, ethertype, 0x0C, 16, 16);
MLXSW_ITEM32(emad, eth_hdr, mlx_proto, 0x0C, 8, 8);
MLXSW_ITEM32(emad, eth_hdr, ver, 0x0C, 4, 4);
MLXSW_ITEM32(emad, op_tlv, type, 0x00, 27, 5);
MLXSW_ITEM32(emad, op_tlv, len, 0x00, 16, 11);
MLXSW_ITEM32(emad, op_tlv, dr, 0x00, 15, 1);
MLXSW_ITEM32(emad, op_tlv, status, 0x00, 8, 7);
MLXSW_ITEM32(emad, op_tlv, register_id, 0x04, 16, 16);
MLXSW_ITEM32(emad, op_tlv, r, 0x04, 15, 1);
MLXSW_ITEM32(emad, op_tlv, method, 0x04, 8, 7);
MLXSW_ITEM32(emad, op_tlv, class, 0x04, 0, 8);
MLXSW_ITEM64(emad, op_tlv, tid, 0x08, 0, 64);
MLXSW_ITEM32(emad, string_tlv, type, 0x00, 27, 5);
MLXSW_ITEM32(emad, string_tlv, len, 0x00, 16, 11);
#define MLXSW_EMAD_STRING_TLV_STRING_LEN 128
MLXSW_ITEM_BUF(emad, string_tlv, string, 0x04,
MLXSW_EMAD_STRING_TLV_STRING_LEN);
MLXSW_ITEM32(emad, latency_tlv, type, 0x00, 27, 5);
MLXSW_ITEM32(emad, latency_tlv, len, 0x00, 16, 11);
MLXSW_ITEM32(emad, latency_tlv, latency_time, 0x04, 0, 32);
MLXSW_ITEM32(emad, reg_tlv, type, 0x00, 27, 5);
MLXSW_ITEM32(emad, reg_tlv, len, 0x00, 16, 11);
MLXSW_ITEM32(emad, end_tlv, type, 0x00, 27, 5);
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 void mlxsw_emad_pack_latency_tlv(char *latency_tlv)
{
mlxsw_emad_latency_tlv_type_set(latency_tlv, MLXSW_EMAD_TLV_TYPE_LATENCY);
mlxsw_emad_latency_tlv_len_set(latency_tlv, MLXSW_EMAD_LATENCY_TLV_LEN);
}
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(const struct mlxsw_core *mlxsw_core,
struct sk_buff *skb,
const struct mlxsw_reg_info *reg,
char *payload,
enum mlxsw_core_reg_access_type type, u64 tid)
{
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 (mlxsw_core->emad.enable_latency_tlv) {
buf = skb_push(skb, MLXSW_EMAD_LATENCY_TLV_LEN * sizeof(u32));
mlxsw_emad_pack_latency_tlv(buf);
}
if (mlxsw_core->emad.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 latency_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 bool mlxsw_emad_tlv_is_latency_tlv(const char *tlv)
{
u8 tlv_type = mlxsw_emad_latency_tlv_type_get(tlv);
return tlv_type == MLXSW_EMAD_TLV_TYPE_LATENCY;
}
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->latency_tlv = 0;
offsets->reg_tlv = MLXSW_EMAD_ETH_HDR_LEN +
MLXSW_EMAD_OP_TLV_LEN * sizeof(u32);
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);
}
if (mlxsw_emad_tlv_is_latency_tlv(skb->data + offsets->reg_tlv)) {
offsets->latency_tlv = offsets->reg_tlv;
offsets->reg_tlv += MLXSW_EMAD_LATENCY_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_txhdr_info txhdr_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);
strscpy(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,
skb->len);
atomic_set(&trans->active, 1);
err = mlxsw_core_skb_transmit(mlxsw_core, skb, &trans->txhdr_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);
}
}
static void mlxsw_emad_rx_listener_func(struct sk_buff *skb, u16 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, FORWARD);
static int mlxsw_emad_tlv_enable(struct mlxsw_core *mlxsw_core)
{
char mgir_pl[MLXSW_REG_MGIR_LEN];
bool string_tlv, latency_tlv;
int err;
mlxsw_reg_mgir_pack(mgir_pl);
err = mlxsw_reg_query(mlxsw_core, MLXSW_REG(mgir), mgir_pl);
if (err)
return err;
string_tlv = mlxsw_reg_mgir_fw_info_string_tlv_get(mgir_pl);
mlxsw_core->emad.enable_string_tlv = string_tlv;
latency_tlv = mlxsw_reg_mgir_fw_info_latency_tlv_get(mgir_pl);
mlxsw_core->emad.enable_latency_tlv = latency_tlv;
return 0;
}
static void mlxsw_emad_tlv_disable(struct mlxsw_core *mlxsw_core)
{
mlxsw_core->emad.enable_latency_tlv = false;
mlxsw_core->emad.enable_string_tlv = false;
}
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", WQ_PERCPU, 0);
if (!emad_wq)
return -ENOMEM;
mlxsw_core->emad_wq = emad_wq;
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_emad_tlv_enable(mlxsw_core);
if (err)
goto err_emad_tlv_enable;
mlxsw_core->emad.use_emad = true;
return 0;
err_emad_tlv_enable:
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_emad_tlv_disable(mlxsw_core);
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)
{
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_TXHDR_LEN);
if (mlxsw_core->emad.enable_string_tlv)
emad_len += MLXSW_EMAD_STRING_TLV_LEN * sizeof(u32);
if (mlxsw_core->emad.enable_latency_tlv)
emad_len += MLXSW_EMAD_LATENCY_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)
{
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));
skb = mlxsw_emad_alloc(mlxsw_core, reg->len);
if (!skb)
return -ENOMEM;
list_add_tail(&trans->bulk_list, bulk_list);
trans->core = mlxsw_core;
trans->tx_skb = skb;
trans->txhdr_info.tx_info.local_port = MLXSW_PORT_CPU_PORT;
trans->txhdr_info.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(mlxsw_core, skb, reg, payload, type, trans->tid);
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;
}
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;
}
int mlxsw_core_fw_flash(struct mlxsw_core *mlxsw_core,
struct mlxfw_dev *mlxfw_dev,
const struct firmware *firmware,
struct netlink_ext_ack *extack)
{
int err;
mlxsw_core->fw_flash_in_progress = true;
err = mlxfw_firmware_flash(mlxfw_dev, firmware, extack);
mlxsw_core->fw_flash_in_progress = false;
return err;
}
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_dev_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
};
return mlxsw_core_fw_flash(mlxsw_core, &mlxsw_core_fw_info.mlxfw_dev,
firmware, extack);
}
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;
if (!req_rev || !filename)
return 0;
err = devl_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;
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_dev_fw_flash(mlxsw_core, firmware, NULL);
release_firmware(firmware);
if (err)
dev_err(mlxsw_bus_info->dev, "Could not upgrade firmware\n");
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_dev_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 = devl_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;
devl_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)
{
devl_params_unregister(priv_to_devlink(mlxsw_core), mlxsw_core_fw_devlink_params,
ARRAY_SIZE(mlxsw_core_fw_devlink_params));
}
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_split(struct devlink *devlink,
struct devlink_port *port,
unsigned int count,
struct netlink_ext_ack *extack)
{
struct mlxsw_core_port *mlxsw_core_port = __dl_port(port);
struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
if (!mlxsw_core->driver->port_split)
return -EOPNOTSUPP;
return mlxsw_core->driver->port_split(mlxsw_core,
mlxsw_core_port->local_port,
count, extack);
}
static int mlxsw_devlink_port_unsplit(struct devlink *devlink,
struct devlink_port *port,
struct netlink_ext_ack *extack)
{
struct mlxsw_core_port *mlxsw_core_port = __dl_port(port);
struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
if (!mlxsw_core->driver->port_unsplit)
return -EOPNOTSUPP;
return mlxsw_core->driver->port_unsplit(mlxsw_core,
mlxsw_core_port->local_port,
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 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;
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);
int err;
*actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT) |
BIT(DEVLINK_RELOAD_ACTION_FW_ACTIVATE);
err = mlxsw_core_bus_device_register(mlxsw_core->bus_info,
mlxsw_core->bus,
mlxsw_core->bus_priv, true,
devlink, extack);
return err;
}
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,
.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)
{
return mlxsw_core_fw_params_register(mlxsw_core);
}
static void mlxsw_core_params_unregister(struct mlxsw_core *mlxsw_core)
{
mlxsw_core_fw_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_obj(*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_CORE_EVENTL(mlxsw_core_health_listener_func, MFDE);
static void
mlxsw_core_health_fw_fatal_dump_fatal_cause(const char *mfde_pl,
struct devlink_fmsg *fmsg)
{
u32 val, tile_v;
val = mlxsw_reg_mfde_fatal_cause_id_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "cause_id", val);
tile_v = mlxsw_reg_mfde_fatal_cause_tile_v_get(mfde_pl);
if (tile_v) {
val = mlxsw_reg_mfde_fatal_cause_tile_index_get(mfde_pl);
devlink_fmsg_u8_pair_put(fmsg, "tile_index", val);
}
}
static void
mlxsw_core_health_fw_fatal_dump_fw_assert(const char *mfde_pl,
struct devlink_fmsg *fmsg)
{
u32 val, tile_v;
val = mlxsw_reg_mfde_fw_assert_var0_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "var0", val);
val = mlxsw_reg_mfde_fw_assert_var1_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "var1", val);
val = mlxsw_reg_mfde_fw_assert_var2_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "var2", val);
val = mlxsw_reg_mfde_fw_assert_var3_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "var3", val);
val = mlxsw_reg_mfde_fw_assert_var4_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "var4", val);
val = mlxsw_reg_mfde_fw_assert_existptr_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "existptr", val);
val = mlxsw_reg_mfde_fw_assert_callra_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "callra", val);
val = mlxsw_reg_mfde_fw_assert_oe_get(mfde_pl);
devlink_fmsg_bool_pair_put(fmsg, "old_event", val);
tile_v = mlxsw_reg_mfde_fw_assert_tile_v_get(mfde_pl);
if (tile_v) {
val = mlxsw_reg_mfde_fw_assert_tile_index_get(mfde_pl);
devlink_fmsg_u8_pair_put(fmsg, "tile_index", val);
}
val = mlxsw_reg_mfde_fw_assert_ext_synd_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "ext_synd", val);
}
static void
mlxsw_core_health_fw_fatal_dump_kvd_im_stop(const char *mfde_pl,
struct devlink_fmsg *fmsg)
{
u32 val;
val = mlxsw_reg_mfde_kvd_im_stop_oe_get(mfde_pl);
devlink_fmsg_bool_pair_put(fmsg, "old_event", val);
val = mlxsw_reg_mfde_kvd_im_stop_pipes_mask_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "pipes_mask", val);
}
static void
mlxsw_core_health_fw_fatal_dump_crspace_to(const char *mfde_pl,
struct devlink_fmsg *fmsg)
{
u32 val;
val = mlxsw_reg_mfde_crspace_to_log_address_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "log_address", val);
val = mlxsw_reg_mfde_crspace_to_oe_get(mfde_pl);
devlink_fmsg_bool_pair_put(fmsg, "old_event", val);
val = mlxsw_reg_mfde_crspace_to_log_id_get(mfde_pl);
devlink_fmsg_u8_pair_put(fmsg, "log_irisc_id", val);
val = mlxsw_reg_mfde_crspace_to_log_ip_get(mfde_pl);
devlink_fmsg_u64_pair_put(fmsg, "log_ip", val);
}
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;
if (!priv_ctx)
return -EOPNOTSUPP;
val = mlxsw_reg_mfde_irisc_id_get(mfde_pl);
devlink_fmsg_u8_pair_put(fmsg, "irisc_id", val);
devlink_fmsg_arr_pair_nest_start(fmsg, "event");
event_id = mlxsw_reg_mfde_event_id_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "id", event_id);
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;
case MLXSW_REG_MFDE_EVENT_ID_TEST:
val_str = "Test";
break;
case MLXSW_REG_MFDE_EVENT_ID_FW_ASSERT:
val_str = "FW assert";
break;
case MLXSW_REG_MFDE_EVENT_ID_FATAL_CAUSE:
val_str = "Fatal cause";
break;
default:
val_str = NULL;
}
if (val_str)
devlink_fmsg_string_pair_put(fmsg, "desc", val_str);
devlink_fmsg_arr_pair_nest_end(fmsg);
devlink_fmsg_arr_pair_nest_start(fmsg, "severity");
val = mlxsw_reg_mfde_severity_get(mfde_pl);
devlink_fmsg_u8_pair_put(fmsg, "id", val);
switch (val) {
case MLXSW_REG_MFDE_SEVERITY_FATL:
val_str = "Fatal";
break;
case MLXSW_REG_MFDE_SEVERITY_NRML:
val_str = "Normal";
break;
case MLXSW_REG_MFDE_SEVERITY_INTR:
val_str = "Debug";
break;
default:
val_str = NULL;
}
if (val_str)
devlink_fmsg_string_pair_put(fmsg, "desc", val_str);
devlink_fmsg_arr_pair_nest_end(fmsg);
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)
devlink_fmsg_string_pair_put(fmsg, "method", val_str);
val = mlxsw_reg_mfde_long_process_get(mfde_pl);
devlink_fmsg_bool_pair_put(fmsg, "long_process", val);
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)
devlink_fmsg_string_pair_put(fmsg, "command_type", val_str);
val = mlxsw_reg_mfde_reg_attr_id_get(mfde_pl);
devlink_fmsg_u32_pair_put(fmsg, "reg_attr_id", val);
switch (event_id) {
case MLXSW_REG_MFDE_EVENT_ID_CRSPACE_TO:
mlxsw_core_health_fw_fatal_dump_crspace_to(mfde_pl, fmsg);
break;
case MLXSW_REG_MFDE_EVENT_ID_KVD_IM_STOP:
mlxsw_core_health_fw_fatal_dump_kvd_im_stop(mfde_pl, fmsg);
break;
case MLXSW_REG_MFDE_EVENT_ID_FW_ASSERT:
mlxsw_core_health_fw_fatal_dump_fw_assert(mfde_pl, fmsg);
break;
case MLXSW_REG_MFDE_EVENT_ID_FATAL_CAUSE:
mlxsw_core_health_fw_fatal_dump_fatal_cause(mfde_pl, fmsg);
break;
}
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;
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;
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->bus->features & MLXSW_BUS_F_TXRX))
return 0;
fw_fatal = devl_health_reporter_create(devlink, &mlxsw_core_health_fw_fatal_ops,
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:
devl_health_reporter_destroy(mlxsw_core->health.fw_fatal);
return err;
}
static void mlxsw_core_health_fini(struct mlxsw_core *mlxsw_core)
{
if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX))
return;
mlxsw_core_health_fw_fatal_config(mlxsw_core, false);
mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core);
mlxsw_core_flush_owq();
devl_health_reporter_destroy(mlxsw_core->health.fw_fatal);
}
static void mlxsw_core_irq_event_handler_init(struct mlxsw_core *mlxsw_core)
{
INIT_LIST_HEAD(&mlxsw_core->irq_event_handler_list);
mutex_init(&mlxsw_core->irq_event_handler_lock);
}
static void mlxsw_core_irq_event_handler_fini(struct mlxsw_core *mlxsw_core)
{
mutex_destroy(&mlxsw_core->irq_event_handler_lock);
WARN_ON(!list_empty(&mlxsw_core->irq_event_handler_list));
}
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;
size_t alloc_size;
u16 max_lag;
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;
}
devl_lock(devlink);
devl_register(devlink);
}
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;
mlxsw_core_irq_event_handler_init(mlxsw_core);
err = mlxsw_bus->init(bus_priv, mlxsw_core, mlxsw_driver->profile,
&mlxsw_core->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;
err = mlxsw_core_max_lag(mlxsw_core, &max_lag);
if (!err && MLXSW_CORE_RES_VALID(mlxsw_core, MAX_LAG_MEMBERS)) {
alloc_size = sizeof(*mlxsw_core->lag.mapping) * 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_core_trap_groups_set(mlxsw_core);
if (err)
goto err_trap_groups_set;
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_linecards_init(mlxsw_core, mlxsw_bus_info);
if (err)
goto err_linecards_init;
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_bus_info, &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)
devl_unlock(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:
mlxsw_linecards_fini(mlxsw_core);
err_linecards_init:
err_fw_rev_validate:
if (!reload)
mlxsw_core_params_unregister(mlxsw_core);
err_register_params:
mlxsw_emad_fini(mlxsw_core);
err_emad_init:
err_trap_groups_set:
kfree(mlxsw_core->lag.mapping);
err_alloc_lag_mapping:
mlxsw_ports_fini(mlxsw_core, reload);
err_ports_init:
if (!reload)
devl_resources_unregister(devlink);
err_register_resources:
mlxsw_bus->fini(bus_priv);
err_bus_init:
mlxsw_core_irq_event_handler_fini(mlxsw_core);
if (!reload) {
devl_unregister(devlink);
devl_unlock(devlink);
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);
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)
devl_lock(devlink);
if (devlink_is_reload_failed(devlink)) {
if (!reload)
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);
mlxsw_linecards_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)
devl_resources_unregister(devlink);
mlxsw_core->bus->fini(mlxsw_core->bus_priv);
mlxsw_core_irq_event_handler_fini(mlxsw_core);
if (!reload) {
devl_unregister(devlink);
devl_unlock(devlink);
devlink_free(devlink);
}
return;
reload_fail_deinit:
mlxsw_core_params_unregister(mlxsw_core);
devl_resources_unregister(devlink);
devl_unregister(devlink);
devl_unlock(devlink);
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_txhdr_info *txhdr_info)
{
return mlxsw_core->bus->skb_transmit(mlxsw_core->bus_priv, skb,
txhdr_info);
}
EXPORT_SYMBOL(mlxsw_core_skb_transmit);
void mlxsw_core_ptp_transmitted(struct mlxsw_core *mlxsw_core,
struct sk_buff *skb, u16 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_obj(*rxl_item);
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, u16 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_obj(*el_item);
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;
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;
if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX))
return 0;
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 (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX))
return;
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_traps_register(struct mlxsw_core *mlxsw_core,
const struct mlxsw_listener *listeners,
size_t listeners_count, void *priv)
{
int i, err;
for (i = 0; i < listeners_count; i++) {
err = mlxsw_core_trap_register(mlxsw_core,
&listeners[i],
priv);
if (err)
goto err_listener_register;
}
return 0;
err_listener_register:
for (i--; i >= 0; i--) {
mlxsw_core_trap_unregister(mlxsw_core,
&listeners[i],
priv);
}
return err;
}
EXPORT_SYMBOL(mlxsw_core_traps_register);
void mlxsw_core_traps_unregister(struct mlxsw_core *mlxsw_core,
const struct mlxsw_listener *listeners,
size_t listeners_count, void *priv)
{
int i;
for (i = 0; i < listeners_count; i++) {
mlxsw_core_trap_unregister(mlxsw_core,
&listeners[i],
priv);
}
}
EXPORT_SYMBOL(mlxsw_core_traps_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;
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_obj(*trans);
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;
}
return sum_err;
}
EXPORT_SYMBOL(mlxsw_reg_trans_bulk_wait);
struct mlxsw_core_irq_event_handler_item {
struct list_head list;
void (*cb)(struct mlxsw_core *mlxsw_core);
};
int mlxsw_core_irq_event_handler_register(struct mlxsw_core *mlxsw_core,
mlxsw_irq_event_cb_t cb)
{
struct mlxsw_core_irq_event_handler_item *item;
item = kzalloc_obj(*item);
if (!item)
return -ENOMEM;
item->cb = cb;
mutex_lock(&mlxsw_core->irq_event_handler_lock);
list_add_tail(&item->list, &mlxsw_core->irq_event_handler_list);
mutex_unlock(&mlxsw_core->irq_event_handler_lock);
return 0;
}
EXPORT_SYMBOL(mlxsw_core_irq_event_handler_register);
void mlxsw_core_irq_event_handler_unregister(struct mlxsw_core *mlxsw_core,
mlxsw_irq_event_cb_t cb)
{
struct mlxsw_core_irq_event_handler_item *item, *tmp;
mutex_lock(&mlxsw_core->irq_event_handler_lock);
list_for_each_entry_safe(item, tmp,
&mlxsw_core->irq_event_handler_list, list) {
if (item->cb == cb) {
list_del(&item->list);
kfree(item);
}
}
mutex_unlock(&mlxsw_core->irq_event_handler_lock);
}
EXPORT_SYMBOL(mlxsw_core_irq_event_handler_unregister);
void mlxsw_core_irq_event_handlers_call(struct mlxsw_core *mlxsw_core)
{
struct mlxsw_core_irq_event_handler_item *item;
mutex_lock(&mlxsw_core->irq_event_handler_lock);
list_for_each_entry(item, &mlxsw_core->irq_event_handler_list, list) {
if (item->cb)
item->cb(mlxsw_core);
}
mutex_unlock(&mlxsw_core->irq_event_handler_lock);
}
EXPORT_SYMBOL(mlxsw_core_irq_event_handlers_call);
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);
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;
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;
u16 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);
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, u16 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);
u16 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, u16 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 const struct devlink_port_ops mlxsw_devlink_port_ops = {
.port_split = mlxsw_devlink_port_split,
.port_unsplit = mlxsw_devlink_port_unsplit,
};
static int __mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u16 local_port,
enum devlink_port_flavour flavour,
u8 slot_index, 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);
if (slot_index) {
struct mlxsw_linecard *linecard;
linecard = mlxsw_linecard_get(mlxsw_core->linecards,
slot_index);
mlxsw_core_port->linecard = linecard;
devlink_port_linecard_set(devlink_port,
linecard->devlink_linecard);
}
err = devl_port_register_with_ops(devlink, devlink_port, local_port,
&mlxsw_devlink_port_ops);
if (err)
memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port));
return err;
}
static void __mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u16 local_port)
{
struct mlxsw_core_port *mlxsw_core_port =
&mlxsw_core->ports[local_port];
struct devlink_port *devlink_port = &mlxsw_core_port->devlink_port;
devl_port_unregister(devlink_port);
memset(mlxsw_core_port, 0, sizeof(*mlxsw_core_port));
}
int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u16 local_port,
u8 slot_index, 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, slot_index,
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, u16 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, 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_netdev_link(struct mlxsw_core *mlxsw_core, u16 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;
SET_NETDEV_DEVLINK_PORT(dev, devlink_port);
}
EXPORT_SYMBOL(mlxsw_core_port_netdev_link);
struct devlink_port *
mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core,
u16 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);
struct mlxsw_linecard *
mlxsw_core_port_linecard_get(struct mlxsw_core *mlxsw_core,
u16 local_port)
{
struct mlxsw_core_port *mlxsw_core_port =
&mlxsw_core->ports[local_port];
return mlxsw_core_port->linecard;
}
void mlxsw_core_ports_remove_selected(struct mlxsw_core *mlxsw_core,
bool (*selector)(void *priv, u16 local_port),
void *priv)
{
if (WARN_ON_ONCE(!mlxsw_core->driver->ports_remove_selected))
return;
mlxsw_core->driver->ports_remove_selected(mlxsw_core, selector, priv);
}
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;
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);
}
}
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);
u32 mlxsw_core_read_utc_sec(struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->bus->read_utc_sec(mlxsw_core->bus_priv);
}
EXPORT_SYMBOL(mlxsw_core_read_utc_sec);
u32 mlxsw_core_read_utc_nsec(struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->bus->read_utc_nsec(mlxsw_core->bus_priv);
}
EXPORT_SYMBOL(mlxsw_core_read_utc_nsec);
bool mlxsw_core_sdq_supports_cqe_v2(struct mlxsw_core *mlxsw_core)
{
return mlxsw_core->driver->sdq_supports_cqe_v2;
}
EXPORT_SYMBOL(mlxsw_core_sdq_supports_cqe_v2);
static int __init mlxsw_core_module_init(void)
{
int err;
err = mlxsw_linecard_driver_register();
if (err)
return err;
mlxsw_wq = alloc_workqueue(mlxsw_core_driver_name, WQ_PERCPU, 0);
if (!mlxsw_wq) {
err = -ENOMEM;
goto err_alloc_workqueue;
}
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);
err_alloc_workqueue:
mlxsw_linecard_driver_unregister();
return err;
}
static void __exit mlxsw_core_module_exit(void)
{
destroy_workqueue(mlxsw_owq);
destroy_workqueue(mlxsw_wq);
mlxsw_linecard_driver_unregister();
}
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");
