/*- * Copyright (c) 2013-2019, Mellanox Technologies, Ltd. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "opt_rss.h" #include "opt_ratelimit.h" #include #include #include #include #include #include #include #include #include #include #include #include #include static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size); static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg); static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg); enum { CMD_IF_REV = 5, }; enum { NUM_LONG_LISTS = 2, NUM_MED_LISTS = 64, LONG_LIST_SIZE = (2ULL * 1024 * 1024 * 1024 / PAGE_SIZE) * 8 + 16 + MLX5_CMD_DATA_BLOCK_SIZE, MED_LIST_SIZE = 16 + MLX5_CMD_DATA_BLOCK_SIZE, }; enum { MLX5_CMD_DELIVERY_STAT_OK = 0x0, MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1, MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2, MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3, MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4, MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5, MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6, MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7, MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8, MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9, MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10, }; struct mlx5_ifc_mbox_out_bits { u8 status[0x8]; u8 reserved_at_8[0x18]; u8 syndrome[0x20]; u8 reserved_at_40[0x40]; }; struct mlx5_ifc_mbox_in_bits { u8 opcode[0x10]; u8 reserved_at_10[0x10]; u8 reserved_at_20[0x10]; u8 op_mod[0x10]; u8 reserved_at_40[0x40]; }; static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd, struct mlx5_cmd_msg *in, int uin_size, struct mlx5_cmd_msg *out, void *uout, int uout_size, mlx5_cmd_cbk_t cbk, void *context, int page_queue) { gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL; struct mlx5_cmd_work_ent *ent; ent = kzalloc(sizeof(*ent), alloc_flags); if (!ent) return ERR_PTR(-ENOMEM); ent->in = in; ent->uin_size = uin_size; ent->out = out; ent->uout = uout; ent->uout_size = uout_size; ent->callback = cbk; ent->context = context; ent->cmd = cmd; ent->page_queue = page_queue; return ent; } static u8 alloc_token(struct mlx5_cmd *cmd) { u8 token; spin_lock(&cmd->token_lock); cmd->token++; if (cmd->token == 0) cmd->token++; token = cmd->token; spin_unlock(&cmd->token_lock); return token; } static int alloc_ent(struct mlx5_cmd_work_ent *ent) { unsigned long flags; struct mlx5_cmd *cmd = ent->cmd; struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd); int ret = cmd->max_reg_cmds; spin_lock_irqsave(&cmd->alloc_lock, flags); if (!ent->page_queue) { ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds); if (ret >= cmd->max_reg_cmds) ret = -1; } if (dev->state != MLX5_DEVICE_STATE_UP) ret = -1; if (ret != -1) { ent->busy = 1; ent->idx = ret; clear_bit(ent->idx, &cmd->bitmask); cmd->ent_mode[ent->idx] = ent->polling ? MLX5_CMD_MODE_POLLING : MLX5_CMD_MODE_EVENTS; cmd->ent_arr[ent->idx] = ent; } spin_unlock_irqrestore(&cmd->alloc_lock, flags); return ret; } static void free_ent(struct mlx5_cmd *cmd, int idx) { unsigned long flags; spin_lock_irqsave(&cmd->alloc_lock, flags); cmd->ent_arr[idx] = NULL; /* safety clear */ cmd->ent_mode[idx] = MLX5_CMD_MODE_POLLING; /* reset mode */ set_bit(idx, &cmd->bitmask); spin_unlock_irqrestore(&cmd->alloc_lock, flags); } static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx) { return cmd->cmd_buf + (idx << cmd->log_stride); } static u8 xor8_buf(void *buf, int len) { u8 *ptr = buf; u8 sum = 0; int i; for (i = 0; i < len; i++) sum ^= ptr[i]; return sum; } static int verify_block_sig(struct mlx5_cmd_prot_block *block) { if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff) return -EINVAL; if (xor8_buf(block, sizeof(*block)) != 0xff) return -EINVAL; return 0; } static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token, int csum) { block->token = token; if (csum) { block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 2); block->sig = ~xor8_buf(block, sizeof(*block) - 1); } } static void calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token, int csum) { size_t i; for (i = 0; i != (msg->numpages * MLX5_NUM_CMDS_IN_ADAPTER_PAGE); i++) { struct mlx5_cmd_prot_block *block; block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); /* compute signature */ calc_block_sig(block, token, csum); /* check for last block */ if (block->next == 0) break; } /* make sure data gets written to RAM */ mlx5_fwp_flush(msg); } static void set_signature(struct mlx5_cmd_work_ent *ent, int csum) { ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay)); calc_chain_sig(ent->in, ent->token, csum); calc_chain_sig(ent->out, ent->token, csum); } static void poll_timeout(struct mlx5_cmd_work_ent *ent) { struct mlx5_core_dev *dev = container_of(ent->cmd, struct mlx5_core_dev, cmd); int poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000); u8 own; do { own = ent->lay->status_own; if (!(own & CMD_OWNER_HW) || dev->state != MLX5_DEVICE_STATE_UP) { ent->ret = 0; return; } usleep_range(5000, 10000); } while (time_before(jiffies, poll_end)); ent->ret = -ETIMEDOUT; } static void free_cmd(struct mlx5_cmd_work_ent *ent) { cancel_delayed_work_sync(&ent->cb_timeout_work); kfree(ent); } static int verify_signature(struct mlx5_cmd_work_ent *ent) { struct mlx5_cmd_msg *msg = ent->out; size_t i; int err; u8 sig; sig = xor8_buf(ent->lay, sizeof(*ent->lay)); if (sig != 0xff) return -EINVAL; for (i = 0; i != (msg->numpages * MLX5_NUM_CMDS_IN_ADAPTER_PAGE); i++) { struct mlx5_cmd_prot_block *block; block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); /* compute signature */ err = verify_block_sig(block); if (err != 0) return (err); /* check for last block */ if (block->next == 0) break; } return (0); } static void dump_buf(void *buf, int size, int data_only, int offset) { __be32 *p = buf; int i; for (i = 0; i < size; i += 16) { pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]), be32_to_cpu(p[1]), be32_to_cpu(p[2]), be32_to_cpu(p[3])); p += 4; offset += 16; } if (!data_only) pr_debug("\n"); } enum { MLX5_DRIVER_STATUS_ABORTED = 0xfe, MLX5_DRIVER_SYND = 0xbadd00de, }; static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op, u32 *synd, u8 *status) { *synd = 0; *status = 0; switch (op) { case MLX5_CMD_OP_TEARDOWN_HCA: case MLX5_CMD_OP_DISABLE_HCA: case MLX5_CMD_OP_MANAGE_PAGES: case MLX5_CMD_OP_DESTROY_MKEY: case MLX5_CMD_OP_DESTROY_EQ: case MLX5_CMD_OP_DESTROY_CQ: case MLX5_CMD_OP_DESTROY_QP: case MLX5_CMD_OP_DESTROY_PSV: case MLX5_CMD_OP_DESTROY_SRQ: case MLX5_CMD_OP_DESTROY_XRC_SRQ: case MLX5_CMD_OP_DESTROY_DCT: case MLX5_CMD_OP_DEALLOC_Q_COUNTER: case MLX5_CMD_OP_DEALLOC_PD: case MLX5_CMD_OP_DEALLOC_UAR: case MLX5_CMD_OP_DETACH_FROM_MCG: case MLX5_CMD_OP_DEALLOC_XRCD: case MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN: case MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT: case MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY: case MLX5_CMD_OP_DESTROY_TIR: case MLX5_CMD_OP_DESTROY_SQ: case MLX5_CMD_OP_DESTROY_RQ: case MLX5_CMD_OP_DESTROY_RMP: case MLX5_CMD_OP_DESTROY_TIS: case MLX5_CMD_OP_DESTROY_RQT: case MLX5_CMD_OP_DESTROY_FLOW_TABLE: case MLX5_CMD_OP_DESTROY_FLOW_GROUP: case MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY: case MLX5_CMD_OP_2ERR_QP: case MLX5_CMD_OP_2RST_QP: case MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT: case MLX5_CMD_OP_MODIFY_FLOW_TABLE: case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: case MLX5_CMD_OP_SET_FLOW_TABLE_ROOT: case MLX5_CMD_OP_DESTROY_GENERAL_OBJ: return MLX5_CMD_STAT_OK; case MLX5_CMD_OP_QUERY_HCA_CAP: case MLX5_CMD_OP_QUERY_ADAPTER: case MLX5_CMD_OP_INIT_HCA: case MLX5_CMD_OP_ENABLE_HCA: case MLX5_CMD_OP_QUERY_PAGES: case MLX5_CMD_OP_SET_HCA_CAP: case MLX5_CMD_OP_QUERY_ISSI: case MLX5_CMD_OP_SET_ISSI: case MLX5_CMD_OP_CREATE_MKEY: case MLX5_CMD_OP_QUERY_MKEY: case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS: case MLX5_CMD_OP_PAGE_FAULT_RESUME: case MLX5_CMD_OP_CREATE_EQ: case MLX5_CMD_OP_QUERY_EQ: case MLX5_CMD_OP_GEN_EQE: case MLX5_CMD_OP_CREATE_CQ: case MLX5_CMD_OP_QUERY_CQ: case MLX5_CMD_OP_MODIFY_CQ: case MLX5_CMD_OP_CREATE_QP: case MLX5_CMD_OP_RST2INIT_QP: case MLX5_CMD_OP_INIT2RTR_QP: case MLX5_CMD_OP_RTR2RTS_QP: case MLX5_CMD_OP_RTS2RTS_QP: case MLX5_CMD_OP_SQERR2RTS_QP: case MLX5_CMD_OP_QUERY_QP: case MLX5_CMD_OP_SQD_RTS_QP: case MLX5_CMD_OP_INIT2INIT_QP: case MLX5_CMD_OP_CREATE_PSV: case MLX5_CMD_OP_CREATE_SRQ: case MLX5_CMD_OP_QUERY_SRQ: case MLX5_CMD_OP_ARM_RQ: case MLX5_CMD_OP_CREATE_XRC_SRQ: case MLX5_CMD_OP_QUERY_XRC_SRQ: case MLX5_CMD_OP_ARM_XRC_SRQ: case MLX5_CMD_OP_CREATE_DCT: case MLX5_CMD_OP_DRAIN_DCT: case MLX5_CMD_OP_QUERY_DCT: case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: case MLX5_CMD_OP_QUERY_VPORT_STATE: case MLX5_CMD_OP_MODIFY_VPORT_STATE: case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: case MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT: case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT: case MLX5_CMD_OP_QUERY_ROCE_ADDRESS: case MLX5_CMD_OP_SET_ROCE_ADDRESS: case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: case MLX5_CMD_OP_MODIFY_HCA_VPORT_CONTEXT: case MLX5_CMD_OP_QUERY_HCA_VPORT_GID: case MLX5_CMD_OP_QUERY_HCA_VPORT_PKEY: case MLX5_CMD_OP_QUERY_VNIC_ENV: case MLX5_CMD_OP_QUERY_VPORT_COUNTER: case MLX5_CMD_OP_ALLOC_Q_COUNTER: case MLX5_CMD_OP_QUERY_Q_COUNTER: case MLX5_CMD_OP_ALLOC_PD: case MLX5_CMD_OP_ALLOC_UAR: case MLX5_CMD_OP_CONFIG_INT_MODERATION: case MLX5_CMD_OP_ACCESS_REG: case MLX5_CMD_OP_ATTACH_TO_MCG: case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG: case MLX5_CMD_OP_MAD_IFC: case MLX5_CMD_OP_QUERY_MAD_DEMUX: case MLX5_CMD_OP_SET_MAD_DEMUX: case MLX5_CMD_OP_NOP: case MLX5_CMD_OP_ALLOC_XRCD: case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: case MLX5_CMD_OP_QUERY_CONG_STATUS: case MLX5_CMD_OP_MODIFY_CONG_STATUS: case MLX5_CMD_OP_QUERY_CONG_PARAMS: case MLX5_CMD_OP_MODIFY_CONG_PARAMS: case MLX5_CMD_OP_QUERY_CONG_STATISTICS: case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: case MLX5_CMD_OP_CREATE_TIR: case MLX5_CMD_OP_MODIFY_TIR: case MLX5_CMD_OP_QUERY_TIR: case MLX5_CMD_OP_CREATE_SQ: case MLX5_CMD_OP_MODIFY_SQ: case MLX5_CMD_OP_QUERY_SQ: case MLX5_CMD_OP_CREATE_RQ: case MLX5_CMD_OP_MODIFY_RQ: case MLX5_CMD_OP_QUERY_RQ: case MLX5_CMD_OP_CREATE_RMP: case MLX5_CMD_OP_MODIFY_RMP: case MLX5_CMD_OP_QUERY_RMP: case MLX5_CMD_OP_CREATE_TIS: case MLX5_CMD_OP_MODIFY_TIS: case MLX5_CMD_OP_QUERY_TIS: case MLX5_CMD_OP_CREATE_RQT: case MLX5_CMD_OP_MODIFY_RQT: case MLX5_CMD_OP_QUERY_RQT: case MLX5_CMD_OP_CREATE_FLOW_TABLE: case MLX5_CMD_OP_QUERY_FLOW_TABLE: case MLX5_CMD_OP_CREATE_FLOW_GROUP: case MLX5_CMD_OP_QUERY_FLOW_GROUP: case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: case MLX5_CMD_OP_CREATE_GENERAL_OBJ: case MLX5_CMD_OP_MODIFY_GENERAL_OBJ: case MLX5_CMD_OP_QUERY_GENERAL_OBJ: *status = MLX5_DRIVER_STATUS_ABORTED; *synd = MLX5_DRIVER_SYND; return -EIO; default: mlx5_core_err(dev, "Unknown FW command (%d)\n", op); return -EINVAL; } } const char *mlx5_command_str(int command) { #define MLX5_COMMAND_STR_CASE(__cmd) case MLX5_CMD_OP_ ## __cmd: return #__cmd switch (command) { MLX5_COMMAND_STR_CASE(QUERY_HCA_CAP); MLX5_COMMAND_STR_CASE(SET_HCA_CAP); MLX5_COMMAND_STR_CASE(QUERY_ADAPTER); MLX5_COMMAND_STR_CASE(INIT_HCA); MLX5_COMMAND_STR_CASE(TEARDOWN_HCA); MLX5_COMMAND_STR_CASE(ENABLE_HCA); MLX5_COMMAND_STR_CASE(DISABLE_HCA); MLX5_COMMAND_STR_CASE(QUERY_PAGES); MLX5_COMMAND_STR_CASE(MANAGE_PAGES); MLX5_COMMAND_STR_CASE(QUERY_ISSI); MLX5_COMMAND_STR_CASE(SET_ISSI); MLX5_COMMAND_STR_CASE(CREATE_MKEY); MLX5_COMMAND_STR_CASE(QUERY_MKEY); MLX5_COMMAND_STR_CASE(DESTROY_MKEY); MLX5_COMMAND_STR_CASE(QUERY_SPECIAL_CONTEXTS); MLX5_COMMAND_STR_CASE(PAGE_FAULT_RESUME); MLX5_COMMAND_STR_CASE(CREATE_EQ); MLX5_COMMAND_STR_CASE(DESTROY_EQ); MLX5_COMMAND_STR_CASE(QUERY_EQ); MLX5_COMMAND_STR_CASE(GEN_EQE); MLX5_COMMAND_STR_CASE(CREATE_CQ); MLX5_COMMAND_STR_CASE(DESTROY_CQ); MLX5_COMMAND_STR_CASE(QUERY_CQ); MLX5_COMMAND_STR_CASE(MODIFY_CQ); MLX5_COMMAND_STR_CASE(CREATE_QP); MLX5_COMMAND_STR_CASE(DESTROY_QP); MLX5_COMMAND_STR_CASE(RST2INIT_QP); MLX5_COMMAND_STR_CASE(INIT2RTR_QP); MLX5_COMMAND_STR_CASE(RTR2RTS_QP); MLX5_COMMAND_STR_CASE(RTS2RTS_QP); MLX5_COMMAND_STR_CASE(SQERR2RTS_QP); MLX5_COMMAND_STR_CASE(2ERR_QP); MLX5_COMMAND_STR_CASE(2RST_QP); MLX5_COMMAND_STR_CASE(QUERY_QP); MLX5_COMMAND_STR_CASE(SQD_RTS_QP); MLX5_COMMAND_STR_CASE(MAD_IFC); MLX5_COMMAND_STR_CASE(INIT2INIT_QP); MLX5_COMMAND_STR_CASE(CREATE_PSV); MLX5_COMMAND_STR_CASE(DESTROY_PSV); MLX5_COMMAND_STR_CASE(CREATE_SRQ); MLX5_COMMAND_STR_CASE(DESTROY_SRQ); MLX5_COMMAND_STR_CASE(QUERY_SRQ); MLX5_COMMAND_STR_CASE(ARM_RQ); MLX5_COMMAND_STR_CASE(CREATE_XRC_SRQ); MLX5_COMMAND_STR_CASE(DESTROY_XRC_SRQ); MLX5_COMMAND_STR_CASE(QUERY_XRC_SRQ); MLX5_COMMAND_STR_CASE(ARM_XRC_SRQ); MLX5_COMMAND_STR_CASE(CREATE_DCT); MLX5_COMMAND_STR_CASE(SET_DC_CNAK_TRACE); MLX5_COMMAND_STR_CASE(DESTROY_DCT); MLX5_COMMAND_STR_CASE(DRAIN_DCT); MLX5_COMMAND_STR_CASE(QUERY_DCT); MLX5_COMMAND_STR_CASE(ARM_DCT_FOR_KEY_VIOLATION); MLX5_COMMAND_STR_CASE(QUERY_VPORT_STATE); MLX5_COMMAND_STR_CASE(MODIFY_VPORT_STATE); MLX5_COMMAND_STR_CASE(QUERY_ESW_VPORT_CONTEXT); MLX5_COMMAND_STR_CASE(MODIFY_ESW_VPORT_CONTEXT); MLX5_COMMAND_STR_CASE(QUERY_NIC_VPORT_CONTEXT); MLX5_COMMAND_STR_CASE(MODIFY_NIC_VPORT_CONTEXT); MLX5_COMMAND_STR_CASE(QUERY_ROCE_ADDRESS); MLX5_COMMAND_STR_CASE(SET_ROCE_ADDRESS); MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_CONTEXT); MLX5_COMMAND_STR_CASE(MODIFY_HCA_VPORT_CONTEXT); MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_GID); MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_PKEY); MLX5_COMMAND_STR_CASE(QUERY_VNIC_ENV); MLX5_COMMAND_STR_CASE(QUERY_VPORT_COUNTER); MLX5_COMMAND_STR_CASE(SET_WOL_ROL); MLX5_COMMAND_STR_CASE(QUERY_WOL_ROL); MLX5_COMMAND_STR_CASE(ALLOC_Q_COUNTER); MLX5_COMMAND_STR_CASE(DEALLOC_Q_COUNTER); MLX5_COMMAND_STR_CASE(QUERY_Q_COUNTER); MLX5_COMMAND_STR_CASE(ALLOC_PD); MLX5_COMMAND_STR_CASE(DEALLOC_PD); MLX5_COMMAND_STR_CASE(ALLOC_UAR); MLX5_COMMAND_STR_CASE(DEALLOC_UAR); MLX5_COMMAND_STR_CASE(CONFIG_INT_MODERATION); MLX5_COMMAND_STR_CASE(ATTACH_TO_MCG); MLX5_COMMAND_STR_CASE(DETACH_FROM_MCG); MLX5_COMMAND_STR_CASE(GET_DROPPED_PACKET_LOG); MLX5_COMMAND_STR_CASE(QUERY_MAD_DEMUX); MLX5_COMMAND_STR_CASE(SET_MAD_DEMUX); MLX5_COMMAND_STR_CASE(NOP); MLX5_COMMAND_STR_CASE(ALLOC_XRCD); MLX5_COMMAND_STR_CASE(DEALLOC_XRCD); MLX5_COMMAND_STR_CASE(ALLOC_TRANSPORT_DOMAIN); MLX5_COMMAND_STR_CASE(DEALLOC_TRANSPORT_DOMAIN); MLX5_COMMAND_STR_CASE(QUERY_CONG_STATUS); MLX5_COMMAND_STR_CASE(MODIFY_CONG_STATUS); MLX5_COMMAND_STR_CASE(QUERY_CONG_PARAMS); MLX5_COMMAND_STR_CASE(MODIFY_CONG_PARAMS); MLX5_COMMAND_STR_CASE(QUERY_CONG_STATISTICS); MLX5_COMMAND_STR_CASE(ADD_VXLAN_UDP_DPORT); MLX5_COMMAND_STR_CASE(DELETE_VXLAN_UDP_DPORT); MLX5_COMMAND_STR_CASE(SET_L2_TABLE_ENTRY); MLX5_COMMAND_STR_CASE(QUERY_L2_TABLE_ENTRY); MLX5_COMMAND_STR_CASE(DELETE_L2_TABLE_ENTRY); MLX5_COMMAND_STR_CASE(CREATE_RMP); MLX5_COMMAND_STR_CASE(MODIFY_RMP); MLX5_COMMAND_STR_CASE(DESTROY_RMP); MLX5_COMMAND_STR_CASE(QUERY_RMP); MLX5_COMMAND_STR_CASE(CREATE_RQT); MLX5_COMMAND_STR_CASE(MODIFY_RQT); MLX5_COMMAND_STR_CASE(DESTROY_RQT); MLX5_COMMAND_STR_CASE(QUERY_RQT); MLX5_COMMAND_STR_CASE(ACCESS_REG); MLX5_COMMAND_STR_CASE(CREATE_SQ); MLX5_COMMAND_STR_CASE(MODIFY_SQ); MLX5_COMMAND_STR_CASE(DESTROY_SQ); MLX5_COMMAND_STR_CASE(QUERY_SQ); MLX5_COMMAND_STR_CASE(CREATE_RQ); MLX5_COMMAND_STR_CASE(MODIFY_RQ); MLX5_COMMAND_STR_CASE(DESTROY_RQ); MLX5_COMMAND_STR_CASE(QUERY_RQ); MLX5_COMMAND_STR_CASE(CREATE_TIR); MLX5_COMMAND_STR_CASE(MODIFY_TIR); MLX5_COMMAND_STR_CASE(DESTROY_TIR); MLX5_COMMAND_STR_CASE(QUERY_TIR); MLX5_COMMAND_STR_CASE(CREATE_TIS); MLX5_COMMAND_STR_CASE(MODIFY_TIS); MLX5_COMMAND_STR_CASE(DESTROY_TIS); MLX5_COMMAND_STR_CASE(QUERY_TIS); MLX5_COMMAND_STR_CASE(CREATE_FLOW_TABLE); MLX5_COMMAND_STR_CASE(DESTROY_FLOW_TABLE); MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE); MLX5_COMMAND_STR_CASE(CREATE_FLOW_GROUP); MLX5_COMMAND_STR_CASE(DESTROY_FLOW_GROUP); MLX5_COMMAND_STR_CASE(QUERY_FLOW_GROUP); MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ENTRY); MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE_ENTRY); MLX5_COMMAND_STR_CASE(DELETE_FLOW_TABLE_ENTRY); MLX5_COMMAND_STR_CASE(SET_DIAGNOSTICS); MLX5_COMMAND_STR_CASE(QUERY_DIAGNOSTICS); MLX5_COMMAND_STR_CASE(CREATE_GENERAL_OBJ); MLX5_COMMAND_STR_CASE(MODIFY_GENERAL_OBJ); MLX5_COMMAND_STR_CASE(QUERY_GENERAL_OBJ); MLX5_COMMAND_STR_CASE(DESTROY_GENERAL_OBJ); default: return "unknown command opcode"; } } static const char *cmd_status_str(u8 status) { switch (status) { case MLX5_CMD_STAT_OK: return "OK"; case MLX5_CMD_STAT_INT_ERR: return "internal error"; case MLX5_CMD_STAT_BAD_OP_ERR: return "bad operation"; case MLX5_CMD_STAT_BAD_PARAM_ERR: return "bad parameter"; case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return "bad system state"; case MLX5_CMD_STAT_BAD_RES_ERR: return "bad resource"; case MLX5_CMD_STAT_RES_BUSY: return "resource busy"; case MLX5_CMD_STAT_LIM_ERR: return "limits exceeded"; case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return "bad resource state"; case MLX5_CMD_STAT_IX_ERR: return "bad index"; case MLX5_CMD_STAT_NO_RES_ERR: return "no resources"; case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return "bad input length"; case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return "bad output length"; case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return "bad QP state"; case MLX5_CMD_STAT_BAD_PKT_ERR: return "bad packet (discarded)"; case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return "bad size too many outstanding CQEs"; default: return "unknown status"; } } static int cmd_status_to_err_helper(u8 status) { switch (status) { case MLX5_CMD_STAT_OK: return 0; case MLX5_CMD_STAT_INT_ERR: return -EIO; case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL; case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL; case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO; case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL; case MLX5_CMD_STAT_RES_BUSY: return -EBUSY; case MLX5_CMD_STAT_LIM_ERR: return -ENOMEM; case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL; case MLX5_CMD_STAT_IX_ERR: return -EINVAL; case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN; case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO; case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO; case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL; case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL; case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL; default: return -EIO; } } void mlx5_cmd_mbox_status(void *out, u8 *status, u32 *syndrome) { *status = MLX5_GET(mbox_out, out, status); *syndrome = MLX5_GET(mbox_out, out, syndrome); } static int mlx5_cmd_check(struct mlx5_core_dev *dev, void *in, void *out) { u32 syndrome; u8 status; u16 opcode; u16 op_mod; mlx5_cmd_mbox_status(out, &status, &syndrome); if (!status) return 0; opcode = MLX5_GET(mbox_in, in, opcode); op_mod = MLX5_GET(mbox_in, in, op_mod); mlx5_core_err(dev, "%s(0x%x) op_mod(0x%x) failed, status %s(0x%x), syndrome (0x%x)\n", mlx5_command_str(opcode), opcode, op_mod, cmd_status_str(status), status, syndrome); return cmd_status_to_err_helper(status); } static void dump_command(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent, int input) { struct mlx5_cmd_msg *msg = input ? ent->in : ent->out; u16 op = MLX5_GET(mbox_in, ent->lay->in, opcode); size_t i; int data_only; int offset = 0; int msg_len = input ? ent->uin_size : ent->uout_size; int dump_len; data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA)); if (data_only) mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA, "dump command data %s(0x%x) %s\n", mlx5_command_str(op), op, input ? "INPUT" : "OUTPUT"); else mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n", mlx5_command_str(op), op, input ? "INPUT" : "OUTPUT"); if (data_only) { if (input) { dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset); offset += sizeof(ent->lay->in); } else { dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset); offset += sizeof(ent->lay->out); } } else { dump_buf(ent->lay, sizeof(*ent->lay), 0, offset); offset += sizeof(*ent->lay); } for (i = 0; i != (msg->numpages * MLX5_NUM_CMDS_IN_ADAPTER_PAGE); i++) { struct mlx5_cmd_prot_block *block; block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); if (data_only) { if (offset >= msg_len) break; dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg_len - offset); dump_buf(block->data, dump_len, 1, offset); offset += MLX5_CMD_DATA_BLOCK_SIZE; } else { mlx5_core_dbg(dev, "command block:\n"); dump_buf(block, sizeof(*block), 0, offset); offset += sizeof(*block); } /* check for last block */ if (block->next == 0) break; } if (data_only) pr_debug("\n"); } static u16 msg_to_opcode(struct mlx5_cmd_msg *in) { return MLX5_GET(mbox_in, in->first.data, opcode); } static void cb_timeout_handler(struct work_struct *work) { struct delayed_work *dwork = container_of(work, struct delayed_work, work); struct mlx5_cmd_work_ent *ent = container_of(dwork, struct mlx5_cmd_work_ent, cb_timeout_work); struct mlx5_core_dev *dev = container_of(ent->cmd, struct mlx5_core_dev, cmd); ent->ret = -ETIMEDOUT; mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", mlx5_command_str(msg_to_opcode(ent->in)), msg_to_opcode(ent->in)); mlx5_cmd_comp_handler(dev, 1UL << ent->idx, MLX5_CMD_MODE_EVENTS); } static void complete_command(struct mlx5_cmd_work_ent *ent) { struct mlx5_cmd *cmd = ent->cmd; struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd); mlx5_cmd_cbk_t callback; void *context; s64 ds; struct mlx5_cmd_stats *stats; unsigned long flags; int err; struct semaphore *sem; if (ent->page_queue) sem = &cmd->pages_sem; else sem = &cmd->sem; if (dev->state != MLX5_DEVICE_STATE_UP) { u8 status = 0; u32 drv_synd; ent->ret = mlx5_internal_err_ret_value(dev, msg_to_opcode(ent->in), &drv_synd, &status); MLX5_SET(mbox_out, ent->out, status, status); MLX5_SET(mbox_out, ent->out, syndrome, drv_synd); } if (ent->callback) { ds = ent->ts2 - ent->ts1; if (ent->op < ARRAY_SIZE(cmd->stats)) { stats = &cmd->stats[ent->op]; spin_lock_irqsave(&stats->lock, flags); stats->sum += ds; ++stats->n; spin_unlock_irqrestore(&stats->lock, flags); } callback = ent->callback; context = ent->context; err = ent->ret; if (!err) { err = mlx5_copy_from_msg(ent->uout, ent->out, ent->uout_size); err = err ? err : mlx5_cmd_check(dev, ent->in->first.data, ent->uout); } mlx5_free_cmd_msg(dev, ent->out); free_msg(dev, ent->in); err = err ? err : ent->status; free_cmd(ent); callback(err, context); } else { complete(&ent->done); } up(sem); } static void cmd_work_handler(struct work_struct *work) { struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work); struct mlx5_cmd *cmd = ent->cmd; struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd); unsigned long cb_timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); struct mlx5_cmd_layout *lay; struct semaphore *sem; bool poll_cmd = ent->polling; sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem; down(sem); if (alloc_ent(ent) < 0) { complete_command(ent); return; } ent->token = alloc_token(cmd); lay = get_inst(cmd, ent->idx); ent->lay = lay; memset(lay, 0, sizeof(*lay)); memcpy(lay->in, ent->in->first.data, sizeof(lay->in)); ent->op = be32_to_cpu(lay->in[0]) >> 16; if (ent->in->numpages != 0) lay->in_ptr = cpu_to_be64(mlx5_fwp_get_dma(ent->in, 0)); if (ent->out->numpages != 0) lay->out_ptr = cpu_to_be64(mlx5_fwp_get_dma(ent->out, 0)); lay->inlen = cpu_to_be32(ent->uin_size); lay->outlen = cpu_to_be32(ent->uout_size); lay->type = MLX5_PCI_CMD_XPORT; lay->token = ent->token; lay->status_own = CMD_OWNER_HW; set_signature(ent, !cmd->checksum_disabled); dump_command(dev, ent, 1); ent->ts1 = ktime_get_ns(); ent->busy = 0; if (ent->callback) schedule_delayed_work(&ent->cb_timeout_work, cb_timeout); /* ring doorbell after the descriptor is valid */ mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx); /* make sure data is written to RAM */ mlx5_fwp_flush(cmd->cmd_page); iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell); mmiowb(); /* if not in polling don't use ent after this point */ if (poll_cmd) { poll_timeout(ent); /* make sure we read the descriptor after ownership is SW */ mlx5_cmd_comp_handler(dev, 1U << ent->idx, MLX5_CMD_MODE_POLLING); } } static const char *deliv_status_to_str(u8 status) { switch (status) { case MLX5_CMD_DELIVERY_STAT_OK: return "no errors"; case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR: return "signature error"; case MLX5_CMD_DELIVERY_STAT_TOK_ERR: return "token error"; case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR: return "bad block number"; case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR: return "output pointer not aligned to block size"; case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR: return "input pointer not aligned to block size"; case MLX5_CMD_DELIVERY_STAT_FW_ERR: return "firmware internal error"; case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR: return "command input length error"; case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR: return "command output length error"; case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR: return "reserved fields not cleared"; case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR: return "bad command descriptor type"; default: return "unknown status code"; } } static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent) { int timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); int err; if (ent->polling) { wait_for_completion(&ent->done); } else if (!wait_for_completion_timeout(&ent->done, timeout)) { ent->ret = -ETIMEDOUT; mlx5_cmd_comp_handler(dev, 1UL << ent->idx, MLX5_CMD_MODE_EVENTS); } err = ent->ret; if (err == -ETIMEDOUT) { mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", mlx5_command_str(msg_to_opcode(ent->in)), msg_to_opcode(ent->in)); } mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n", err, deliv_status_to_str(ent->status), ent->status); return err; } /* Notes: * 1. Callback functions may not sleep * 2. page queue commands do not support asynchrous completion */ static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in, int uin_size, struct mlx5_cmd_msg *out, void *uout, int uout_size, mlx5_cmd_cbk_t callback, void *context, int page_queue, u8 *status, bool force_polling) { struct mlx5_cmd *cmd = &dev->cmd; struct mlx5_cmd_work_ent *ent; struct mlx5_cmd_stats *stats; int err = 0; s64 ds; u16 op; if (callback && page_queue) return -EINVAL; ent = alloc_cmd(cmd, in, uin_size, out, uout, uout_size, callback, context, page_queue); if (IS_ERR(ent)) return PTR_ERR(ent); ent->polling = force_polling || (cmd->mode == MLX5_CMD_MODE_POLLING); if (!callback) init_completion(&ent->done); INIT_DELAYED_WORK(&ent->cb_timeout_work, cb_timeout_handler); INIT_WORK(&ent->work, cmd_work_handler); if (page_queue) { cmd_work_handler(&ent->work); } else if (!queue_work(dev->priv.health.wq_cmd, &ent->work)) { mlx5_core_warn(dev, "failed to queue work\n"); err = -ENOMEM; goto out_free; } if (callback) goto out; err = wait_func(dev, ent); if (err == -ETIMEDOUT) goto out; ds = ent->ts2 - ent->ts1; op = MLX5_GET(mbox_in, in->first.data, opcode); if (op < ARRAY_SIZE(cmd->stats)) { stats = &cmd->stats[op]; spin_lock_irq(&stats->lock); stats->sum += ds; ++stats->n; spin_unlock_irq(&stats->lock); } mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME, "fw exec time for %s is %lld nsec\n", mlx5_command_str(op), (long long)ds); *status = ent->status; free_cmd(ent); return err; out_free: free_cmd(ent); out: return err; } static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, size_t size) { size_t delta; size_t i; if (to == NULL || from == NULL) return (-ENOMEM); delta = min_t(size_t, size, sizeof(to->first.data)); memcpy(to->first.data, from, delta); from = (char *)from + delta; size -= delta; for (i = 0; size != 0; i++) { struct mlx5_cmd_prot_block *block; block = mlx5_fwp_get_virt(to, i * MLX5_CMD_MBOX_SIZE); delta = min_t(size_t, size, MLX5_CMD_DATA_BLOCK_SIZE); memcpy(block->data, from, delta); from = (char *)from + delta; size -= delta; } return (0); } static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size) { size_t delta; size_t i; if (to == NULL || from == NULL) return (-ENOMEM); delta = min_t(size_t, size, sizeof(from->first.data)); memcpy(to, from->first.data, delta); to = (char *)to + delta; size -= delta; for (i = 0; size != 0; i++) { struct mlx5_cmd_prot_block *block; block = mlx5_fwp_get_virt(from, i * MLX5_CMD_MBOX_SIZE); delta = min_t(size_t, size, MLX5_CMD_DATA_BLOCK_SIZE); memcpy(to, block->data, delta); to = (char *)to + delta; size -= delta; } return (0); } static struct mlx5_cmd_msg * mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev, gfp_t flags, size_t size) { struct mlx5_cmd_msg *msg; size_t blen; size_t n; size_t i; blen = size - min_t(size_t, sizeof(msg->first.data), size); n = howmany(blen, MLX5_CMD_DATA_BLOCK_SIZE); msg = mlx5_fwp_alloc(dev, flags, howmany(n, MLX5_NUM_CMDS_IN_ADAPTER_PAGE)); if (msg == NULL) return (ERR_PTR(-ENOMEM)); for (i = 0; i != n; i++) { struct mlx5_cmd_prot_block *block; block = mlx5_fwp_get_virt(msg, i * MLX5_CMD_MBOX_SIZE); memset(block, 0, MLX5_CMD_MBOX_SIZE); if (i != (n - 1)) { u64 dma = mlx5_fwp_get_dma(msg, (i + 1) * MLX5_CMD_MBOX_SIZE); block->next = cpu_to_be64(dma); } block->block_num = cpu_to_be32(i); } /* make sure initial data is written to RAM */ mlx5_fwp_flush(msg); return (msg); } static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg) { mlx5_fwp_free(msg); } static void clean_debug_files(struct mlx5_core_dev *dev) { } static void mlx5_cmd_change_mod(struct mlx5_core_dev *dev, int mode) { struct mlx5_cmd *cmd = &dev->cmd; int i; if (cmd->mode == mode) return; for (i = 0; i < cmd->max_reg_cmds; i++) down(&cmd->sem); down(&cmd->pages_sem); cmd->mode = mode; up(&cmd->pages_sem); for (i = 0; i < cmd->max_reg_cmds; i++) up(&cmd->sem); } void mlx5_cmd_use_events(struct mlx5_core_dev *dev) { mlx5_cmd_change_mod(dev, MLX5_CMD_MODE_EVENTS); } void mlx5_cmd_use_polling(struct mlx5_core_dev *dev) { mlx5_cmd_change_mod(dev, MLX5_CMD_MODE_POLLING); } static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg) { unsigned long flags; if (msg->cache) { spin_lock_irqsave(&msg->cache->lock, flags); list_add_tail(&msg->list, &msg->cache->head); spin_unlock_irqrestore(&msg->cache->lock, flags); } else { mlx5_free_cmd_msg(dev, msg); } } void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vector_flags, enum mlx5_cmd_mode cmd_mode) { struct mlx5_cmd *cmd = &dev->cmd; struct mlx5_cmd_work_ent *ent; bool triggered = (vector_flags & MLX5_TRIGGERED_CMD_COMP) ? 1 : 0; u32 vector = vector_flags; /* discard flags in the upper dword */ int i; /* make sure data gets read from RAM */ mlx5_fwp_invalidate(cmd->cmd_page); while (vector != 0) { i = ffs(vector) - 1; vector &= ~(1U << i); /* check command mode */ if (cmd->ent_mode[i] != cmd_mode) continue; ent = cmd->ent_arr[i]; /* check if command was already handled */ if (ent == NULL) continue; if (ent->callback) cancel_delayed_work(&ent->cb_timeout_work); ent->ts2 = ktime_get_ns(); memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out)); /* make sure data gets read from RAM */ mlx5_fwp_invalidate(ent->out); dump_command(dev, ent, 0); if (!ent->ret) { if (!cmd->checksum_disabled) ent->ret = verify_signature(ent); else ent->ret = 0; if (triggered) ent->status = MLX5_DRIVER_STATUS_ABORTED; else ent->status = ent->lay->status_own >> 1; mlx5_core_dbg(dev, "FW command ret 0x%x, status %s(0x%x)\n", ent->ret, deliv_status_to_str(ent->status), ent->status); } free_ent(cmd, ent->idx); complete_command(ent); } } EXPORT_SYMBOL(mlx5_cmd_comp_handler); static int status_to_err(u8 status) { return status ? -EIO : 0; /* TBD more meaningful codes */ } static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size, gfp_t gfp) { struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM); struct mlx5_cmd *cmd = &dev->cmd; struct cache_ent *ent = NULL; if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE) ent = &cmd->cache.large; else if (in_size > 16 && in_size <= MED_LIST_SIZE) ent = &cmd->cache.med; if (ent) { spin_lock_irq(&ent->lock); if (!list_empty(&ent->head)) { msg = list_entry(ent->head.next, struct mlx5_cmd_msg, list); list_del(&msg->list); } spin_unlock_irq(&ent->lock); } if (IS_ERR(msg)) msg = mlx5_alloc_cmd_msg(dev, gfp, in_size); return msg; } static int is_manage_pages(void *in) { return MLX5_GET(mbox_in, in, opcode) == MLX5_CMD_OP_MANAGE_PAGES; } static int cmd_exec_helper(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int out_size, mlx5_cmd_cbk_t callback, void *context, bool force_polling) { struct mlx5_cmd_msg *inb; struct mlx5_cmd_msg *outb; int pages_queue; const gfp_t gfp = GFP_KERNEL; int err; u8 status = 0; u32 drv_synd; if (dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { u16 opcode = MLX5_GET(mbox_in, in, opcode); err = mlx5_internal_err_ret_value(dev, opcode, &drv_synd, &status); MLX5_SET(mbox_out, out, status, status); MLX5_SET(mbox_out, out, syndrome, drv_synd); return err; } pages_queue = is_manage_pages(in); inb = alloc_msg(dev, in_size, gfp); if (IS_ERR(inb)) { err = PTR_ERR(inb); return err; } err = mlx5_copy_to_msg(inb, in, in_size); if (err) { mlx5_core_warn(dev, "err %d\n", err); goto out_in; } outb = mlx5_alloc_cmd_msg(dev, gfp, out_size); if (IS_ERR(outb)) { err = PTR_ERR(outb); goto out_in; } err = mlx5_cmd_invoke(dev, inb, in_size, outb, out, out_size, callback, context, pages_queue, &status, force_polling); if (err) { if (err == -ETIMEDOUT) return err; goto out_out; } mlx5_core_dbg(dev, "err %d, status %d\n", err, status); if (status) { err = status_to_err(status); goto out_out; } if (callback) return err; err = mlx5_copy_from_msg(out, outb, out_size); out_out: mlx5_free_cmd_msg(dev, outb); out_in: free_msg(dev, inb); return err; } int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int out_size) { int err; err = cmd_exec_helper(dev, in, in_size, out, out_size, NULL, NULL, false); return err ? : mlx5_cmd_check(dev, in, out); } EXPORT_SYMBOL(mlx5_cmd_exec); void mlx5_cmd_init_async_ctx(struct mlx5_core_dev *dev, struct mlx5_async_ctx *ctx) { ctx->dev = dev; /* Starts at 1 to avoid doing wake_up if we are not cleaning up */ atomic_set(&ctx->num_inflight, 1); init_waitqueue_head(&ctx->wait); } EXPORT_SYMBOL(mlx5_cmd_init_async_ctx); /** * mlx5_cmd_cleanup_async_ctx - Clean up an async_ctx * @ctx: The ctx to clean * * Upon return all callbacks given to mlx5_cmd_exec_cb() have been called. The * caller must ensure that mlx5_cmd_exec_cb() is not called during or after * the call mlx5_cleanup_async_ctx(). */ void mlx5_cmd_cleanup_async_ctx(struct mlx5_async_ctx *ctx) { atomic_dec(&ctx->num_inflight); wait_event(ctx->wait, atomic_read(&ctx->num_inflight) == 0); } EXPORT_SYMBOL(mlx5_cmd_cleanup_async_ctx); static void mlx5_cmd_exec_cb_handler(int status, void *_work) { struct mlx5_async_work *work = _work; struct mlx5_async_ctx *ctx = work->ctx; work->user_callback(status, work); if (atomic_dec_and_test(&ctx->num_inflight)) wake_up(&ctx->wait); } int mlx5_cmd_exec_cb(struct mlx5_async_ctx *ctx, void *in, int in_size, void *out, int out_size, mlx5_async_cbk_t callback, struct mlx5_async_work *work) { int ret; work->ctx = ctx; work->user_callback = callback; if (WARN_ON(!atomic_inc_not_zero(&ctx->num_inflight))) return -EIO; ret = cmd_exec_helper(ctx->dev, in, in_size, out, out_size, mlx5_cmd_exec_cb_handler, work, false); if (ret && atomic_dec_and_test(&ctx->num_inflight)) wake_up(&ctx->wait); return ret; } EXPORT_SYMBOL(mlx5_cmd_exec_cb); int mlx5_cmd_exec_polling(struct mlx5_core_dev *dev, void *in, int in_size, void *out, int out_size) { int err; err = cmd_exec_helper(dev, in, in_size, out, out_size, NULL, NULL, true); return err ? : mlx5_cmd_check(dev, in, out); } EXPORT_SYMBOL(mlx5_cmd_exec_polling); static void destroy_msg_cache(struct mlx5_core_dev *dev) { struct mlx5_cmd *cmd = &dev->cmd; struct mlx5_cmd_msg *msg; struct mlx5_cmd_msg *n; list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) { list_del(&msg->list); mlx5_free_cmd_msg(dev, msg); } list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) { list_del(&msg->list); mlx5_free_cmd_msg(dev, msg); } } static int create_msg_cache(struct mlx5_core_dev *dev) { struct mlx5_cmd *cmd = &dev->cmd; struct mlx5_cmd_msg *msg; int err; int i; spin_lock_init(&cmd->cache.large.lock); INIT_LIST_HEAD(&cmd->cache.large.head); spin_lock_init(&cmd->cache.med.lock); INIT_LIST_HEAD(&cmd->cache.med.head); for (i = 0; i < NUM_LONG_LISTS; i++) { msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE); if (IS_ERR(msg)) { err = PTR_ERR(msg); goto ex_err; } msg->cache = &cmd->cache.large; list_add_tail(&msg->list, &cmd->cache.large.head); } for (i = 0; i < NUM_MED_LISTS; i++) { msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE); if (IS_ERR(msg)) { err = PTR_ERR(msg); goto ex_err; } msg->cache = &cmd->cache.med; list_add_tail(&msg->list, &cmd->cache.med.head); } return 0; ex_err: destroy_msg_cache(dev); return err; } static int alloc_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) { int err; sx_init(&cmd->dma_sx, "MLX5-DMA-SX"); mtx_init(&cmd->dma_mtx, "MLX5-DMA-MTX", NULL, MTX_DEF); cv_init(&cmd->dma_cv, "MLX5-DMA-CV"); /* * Create global DMA descriptor tag for allocating * 4K firmware pages: */ err = -bus_dma_tag_create( bus_get_dma_tag(dev->pdev->dev.bsddev), MLX5_ADAPTER_PAGE_SIZE, /* alignment */ 0, /* no boundary */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ MLX5_ADAPTER_PAGE_SIZE, /* maxsize */ 1, /* nsegments */ MLX5_ADAPTER_PAGE_SIZE, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockfuncarg */ &cmd->dma_tag); if (err != 0) goto failure_destroy_sx; cmd->cmd_page = mlx5_fwp_alloc(dev, GFP_KERNEL, 1); if (cmd->cmd_page == NULL) { err = -ENOMEM; goto failure_alloc_page; } cmd->dma = mlx5_fwp_get_dma(cmd->cmd_page, 0); cmd->cmd_buf = mlx5_fwp_get_virt(cmd->cmd_page, 0); return (0); failure_alloc_page: bus_dma_tag_destroy(cmd->dma_tag); failure_destroy_sx: cv_destroy(&cmd->dma_cv); mtx_destroy(&cmd->dma_mtx); sx_destroy(&cmd->dma_sx); return (err); } static void free_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) { mlx5_fwp_free(cmd->cmd_page); bus_dma_tag_destroy(cmd->dma_tag); cv_destroy(&cmd->dma_cv); mtx_destroy(&cmd->dma_mtx); sx_destroy(&cmd->dma_sx); } int mlx5_cmd_init(struct mlx5_core_dev *dev) { struct mlx5_cmd *cmd = &dev->cmd; u32 cmd_h, cmd_l; u16 cmd_if_rev; int err; int i; memset(cmd, 0, sizeof(*cmd)); cmd_if_rev = cmdif_rev_get(dev); if (cmd_if_rev != CMD_IF_REV) { mlx5_core_err(dev, "Driver cmdif rev(%d) differs from firmware's(%d)\n", CMD_IF_REV, cmd_if_rev); return -EINVAL; } err = alloc_cmd_page(dev, cmd); if (err) goto err_free_pool; cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff; cmd->log_sz = cmd_l >> 4 & 0xf; cmd->log_stride = cmd_l & 0xf; if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) { mlx5_core_err(dev, "firmware reports too many outstanding commands %d\n", 1 << cmd->log_sz); err = -EINVAL; goto err_free_page; } if (cmd->log_sz + cmd->log_stride > MLX5_ADAPTER_PAGE_SHIFT) { mlx5_core_err(dev, "command queue size overflow\n"); err = -EINVAL; goto err_free_page; } cmd->checksum_disabled = 1; cmd->max_reg_cmds = (1 << cmd->log_sz) - 1; cmd->bitmask = (1 << cmd->max_reg_cmds) - 1; cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16; if (cmd->cmdif_rev > CMD_IF_REV) { mlx5_core_err(dev, "driver does not support command interface version. driver %d, firmware %d\n", CMD_IF_REV, cmd->cmdif_rev); err = -ENOTSUPP; goto err_free_page; } spin_lock_init(&cmd->alloc_lock); spin_lock_init(&cmd->token_lock); for (i = 0; i < ARRAY_SIZE(cmd->stats); i++) spin_lock_init(&cmd->stats[i].lock); sema_init(&cmd->sem, cmd->max_reg_cmds); sema_init(&cmd->pages_sem, 1); cmd_h = (u32)((u64)(cmd->dma) >> 32); cmd_l = (u32)(cmd->dma); if (cmd_l & 0xfff) { mlx5_core_err(dev, "invalid command queue address\n"); err = -ENOMEM; goto err_free_page; } iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h); iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz); /* Make sure firmware sees the complete address before we proceed */ wmb(); mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma)); cmd->mode = MLX5_CMD_MODE_POLLING; err = create_msg_cache(dev); if (err) { mlx5_core_err(dev, "failed to create command cache\n"); goto err_free_page; } return 0; err_free_page: free_cmd_page(dev, cmd); err_free_pool: return err; } EXPORT_SYMBOL(mlx5_cmd_init); void mlx5_cmd_cleanup(struct mlx5_core_dev *dev) { struct mlx5_cmd *cmd = &dev->cmd; clean_debug_files(dev); flush_workqueue(dev->priv.health.wq_cmd); destroy_msg_cache(dev); free_cmd_page(dev, cmd); } EXPORT_SYMBOL(mlx5_cmd_cleanup); int mlx5_cmd_query_cong_counter(struct mlx5_core_dev *dev, bool reset, void *out, int out_size) { u32 in[MLX5_ST_SZ_DW(query_cong_statistics_in)] = { }; MLX5_SET(query_cong_statistics_in, in, opcode, MLX5_CMD_OP_QUERY_CONG_STATISTICS); MLX5_SET(query_cong_statistics_in, in, clear, reset); return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); } EXPORT_SYMBOL(mlx5_cmd_query_cong_counter); int mlx5_cmd_query_cong_params(struct mlx5_core_dev *dev, int cong_point, void *out, int out_size) { u32 in[MLX5_ST_SZ_DW(query_cong_params_in)] = { }; MLX5_SET(query_cong_params_in, in, opcode, MLX5_CMD_OP_QUERY_CONG_PARAMS); MLX5_SET(query_cong_params_in, in, cong_protocol, cong_point); return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); } EXPORT_SYMBOL(mlx5_cmd_query_cong_params); int mlx5_cmd_modify_cong_params(struct mlx5_core_dev *dev, void *in, int in_size) { u32 out[MLX5_ST_SZ_DW(modify_cong_params_out)] = { }; return mlx5_cmd_exec(dev, in, in_size, out, sizeof(out)); } EXPORT_SYMBOL(mlx5_cmd_modify_cong_params); int mlx5_cmd_query_cong_status(struct mlx5_core_dev *dev, int cong_point, int prio, void *out, int out_size) { u32 in[MLX5_ST_SZ_DW(query_cong_status_in)] = { }; MLX5_SET(query_cong_status_in, in, opcode, MLX5_CMD_OP_QUERY_CONG_STATUS); MLX5_SET(query_cong_status_in, in, priority, prio); MLX5_SET(query_cong_status_in, in, cong_protocol, cong_point); return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); } EXPORT_SYMBOL(mlx5_cmd_query_cong_status); int mlx5_cmd_modify_cong_status(struct mlx5_core_dev *dev, void *in, int in_size) { u32 out[MLX5_ST_SZ_DW(modify_cong_status_out)] = { }; return mlx5_cmd_exec(dev, in, in_size, out, sizeof(out)); } EXPORT_SYMBOL(mlx5_cmd_modify_cong_status);