Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1 | /* |
Matthew Finlay | b3f63c3 | 2016-02-22 18:17:32 +0200 | [diff] [blame] | 2 | * Copyright (c) 2013-2016, Mellanox Technologies. All rights reserved. |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 3 | * |
| 4 | * This software is available to you under a choice of one of two |
| 5 | * licenses. You may choose to be licensed under the terms of the GNU |
| 6 | * General Public License (GPL) Version 2, available from the file |
| 7 | * COPYING in the main directory of this source tree, or the |
| 8 | * OpenIB.org BSD license below: |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or |
| 11 | * without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistributions of source code must retain the above |
| 15 | * copyright notice, this list of conditions and the following |
| 16 | * disclaimer. |
| 17 | * |
| 18 | * - Redistributions in binary form must reproduce the above |
| 19 | * copyright notice, this list of conditions and the following |
| 20 | * disclaimer in the documentation and/or other materials |
| 21 | * provided with the distribution. |
| 22 | * |
| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 30 | * SOFTWARE. |
| 31 | */ |
| 32 | |
Christoph Hellwig | adec640 | 2015-08-28 09:27:19 +0200 | [diff] [blame] | 33 | #include <linux/highmem.h> |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 34 | #include <linux/module.h> |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 35 | #include <linux/errno.h> |
| 36 | #include <linux/pci.h> |
| 37 | #include <linux/dma-mapping.h> |
| 38 | #include <linux/slab.h> |
| 39 | #include <linux/delay.h> |
| 40 | #include <linux/random.h> |
| 41 | #include <linux/io-mapping.h> |
| 42 | #include <linux/mlx5/driver.h> |
| 43 | #include <linux/debugfs.h> |
| 44 | |
| 45 | #include "mlx5_core.h" |
| 46 | |
| 47 | enum { |
Moshe Lazer | 0a324f31 | 2013-08-14 17:46:48 +0300 | [diff] [blame] | 48 | CMD_IF_REV = 5, |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 49 | }; |
| 50 | |
| 51 | enum { |
| 52 | CMD_MODE_POLLING, |
| 53 | CMD_MODE_EVENTS |
| 54 | }; |
| 55 | |
| 56 | enum { |
| 57 | NUM_LONG_LISTS = 2, |
| 58 | NUM_MED_LISTS = 64, |
| 59 | LONG_LIST_SIZE = (2ULL * 1024 * 1024 * 1024 / PAGE_SIZE) * 8 + 16 + |
| 60 | MLX5_CMD_DATA_BLOCK_SIZE, |
| 61 | MED_LIST_SIZE = 16 + MLX5_CMD_DATA_BLOCK_SIZE, |
| 62 | }; |
| 63 | |
| 64 | enum { |
| 65 | MLX5_CMD_DELIVERY_STAT_OK = 0x0, |
| 66 | MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1, |
| 67 | MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2, |
| 68 | MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3, |
| 69 | MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4, |
| 70 | MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5, |
| 71 | MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6, |
| 72 | MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7, |
| 73 | MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8, |
| 74 | MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9, |
| 75 | MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10, |
| 76 | }; |
| 77 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 78 | static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd, |
| 79 | struct mlx5_cmd_msg *in, |
| 80 | struct mlx5_cmd_msg *out, |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 81 | void *uout, int uout_size, |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 82 | mlx5_cmd_cbk_t cbk, |
| 83 | void *context, int page_queue) |
| 84 | { |
| 85 | gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL; |
| 86 | struct mlx5_cmd_work_ent *ent; |
| 87 | |
| 88 | ent = kzalloc(sizeof(*ent), alloc_flags); |
| 89 | if (!ent) |
| 90 | return ERR_PTR(-ENOMEM); |
| 91 | |
| 92 | ent->in = in; |
| 93 | ent->out = out; |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 94 | ent->uout = uout; |
| 95 | ent->uout_size = uout_size; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 96 | ent->callback = cbk; |
| 97 | ent->context = context; |
| 98 | ent->cmd = cmd; |
| 99 | ent->page_queue = page_queue; |
| 100 | |
| 101 | return ent; |
| 102 | } |
| 103 | |
| 104 | static u8 alloc_token(struct mlx5_cmd *cmd) |
| 105 | { |
| 106 | u8 token; |
| 107 | |
| 108 | spin_lock(&cmd->token_lock); |
Achiad Shochat | 4cbdd27 | 2015-04-02 17:07:28 +0300 | [diff] [blame] | 109 | cmd->token++; |
| 110 | if (cmd->token == 0) |
| 111 | cmd->token++; |
| 112 | token = cmd->token; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 113 | spin_unlock(&cmd->token_lock); |
| 114 | |
| 115 | return token; |
| 116 | } |
| 117 | |
| 118 | static int alloc_ent(struct mlx5_cmd *cmd) |
| 119 | { |
| 120 | unsigned long flags; |
| 121 | int ret; |
| 122 | |
| 123 | spin_lock_irqsave(&cmd->alloc_lock, flags); |
| 124 | ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds); |
| 125 | if (ret < cmd->max_reg_cmds) |
| 126 | clear_bit(ret, &cmd->bitmask); |
| 127 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); |
| 128 | |
| 129 | return ret < cmd->max_reg_cmds ? ret : -ENOMEM; |
| 130 | } |
| 131 | |
| 132 | static void free_ent(struct mlx5_cmd *cmd, int idx) |
| 133 | { |
| 134 | unsigned long flags; |
| 135 | |
| 136 | spin_lock_irqsave(&cmd->alloc_lock, flags); |
| 137 | set_bit(idx, &cmd->bitmask); |
| 138 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); |
| 139 | } |
| 140 | |
| 141 | static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx) |
| 142 | { |
| 143 | return cmd->cmd_buf + (idx << cmd->log_stride); |
| 144 | } |
| 145 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 146 | static u8 xor8_buf(void *buf, size_t offset, int len) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 147 | { |
| 148 | u8 *ptr = buf; |
| 149 | u8 sum = 0; |
| 150 | int i; |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 151 | int end = len + offset; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 152 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 153 | for (i = offset; i < end; i++) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 154 | sum ^= ptr[i]; |
| 155 | |
| 156 | return sum; |
| 157 | } |
| 158 | |
| 159 | static int verify_block_sig(struct mlx5_cmd_prot_block *block) |
| 160 | { |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 161 | size_t rsvd0_off = offsetof(struct mlx5_cmd_prot_block, rsvd0); |
| 162 | int xor_len = sizeof(*block) - sizeof(block->data) - 1; |
| 163 | |
| 164 | if (xor8_buf(block, rsvd0_off, xor_len) != 0xff) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 165 | return -EINVAL; |
| 166 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 167 | if (xor8_buf(block, 0, sizeof(*block)) != 0xff) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 168 | return -EINVAL; |
| 169 | |
| 170 | return 0; |
| 171 | } |
| 172 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 173 | static void calc_block_sig(struct mlx5_cmd_prot_block *block) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 174 | { |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 175 | int ctrl_xor_len = sizeof(*block) - sizeof(block->data) - 2; |
| 176 | size_t rsvd0_off = offsetof(struct mlx5_cmd_prot_block, rsvd0); |
| 177 | |
| 178 | block->ctrl_sig = ~xor8_buf(block, rsvd0_off, ctrl_xor_len); |
| 179 | block->sig = ~xor8_buf(block, 0, sizeof(*block) - 1); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 180 | } |
| 181 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 182 | static void calc_chain_sig(struct mlx5_cmd_msg *msg) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 183 | { |
| 184 | struct mlx5_cmd_mailbox *next = msg->next; |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 185 | int size = msg->len; |
| 186 | int blen = size - min_t(int, sizeof(msg->first.data), size); |
| 187 | int n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) |
| 188 | / MLX5_CMD_DATA_BLOCK_SIZE; |
| 189 | int i = 0; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 190 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 191 | for (i = 0; i < n && next; i++) { |
| 192 | calc_block_sig(next->buf); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 193 | next = next->next; |
| 194 | } |
| 195 | } |
| 196 | |
Eli Cohen | c1868b8 | 2013-09-11 16:35:25 +0300 | [diff] [blame] | 197 | static void set_signature(struct mlx5_cmd_work_ent *ent, int csum) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 198 | { |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 199 | ent->lay->sig = ~xor8_buf(ent->lay, 0, sizeof(*ent->lay)); |
| 200 | if (csum) { |
| 201 | calc_chain_sig(ent->in); |
| 202 | calc_chain_sig(ent->out); |
| 203 | } |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | static void poll_timeout(struct mlx5_cmd_work_ent *ent) |
| 207 | { |
| 208 | unsigned long poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000); |
| 209 | u8 own; |
| 210 | |
| 211 | do { |
| 212 | own = ent->lay->status_own; |
| 213 | if (!(own & CMD_OWNER_HW)) { |
| 214 | ent->ret = 0; |
| 215 | return; |
| 216 | } |
| 217 | usleep_range(5000, 10000); |
| 218 | } while (time_before(jiffies, poll_end)); |
| 219 | |
| 220 | ent->ret = -ETIMEDOUT; |
| 221 | } |
| 222 | |
| 223 | static void free_cmd(struct mlx5_cmd_work_ent *ent) |
| 224 | { |
| 225 | kfree(ent); |
| 226 | } |
| 227 | |
| 228 | |
| 229 | static int verify_signature(struct mlx5_cmd_work_ent *ent) |
| 230 | { |
| 231 | struct mlx5_cmd_mailbox *next = ent->out->next; |
| 232 | int err; |
| 233 | u8 sig; |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 234 | int size = ent->out->len; |
| 235 | int blen = size - min_t(int, sizeof(ent->out->first.data), size); |
| 236 | int n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) |
| 237 | / MLX5_CMD_DATA_BLOCK_SIZE; |
| 238 | int i = 0; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 239 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 240 | sig = xor8_buf(ent->lay, 0, sizeof(*ent->lay)); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 241 | if (sig != 0xff) |
| 242 | return -EINVAL; |
| 243 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 244 | for (i = 0; i < n && next; i++) { |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 245 | err = verify_block_sig(next->buf); |
| 246 | if (err) |
| 247 | return err; |
| 248 | |
| 249 | next = next->next; |
| 250 | } |
| 251 | |
| 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | static void dump_buf(void *buf, int size, int data_only, int offset) |
| 256 | { |
| 257 | __be32 *p = buf; |
| 258 | int i; |
| 259 | |
| 260 | for (i = 0; i < size; i += 16) { |
| 261 | pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]), |
| 262 | be32_to_cpu(p[1]), be32_to_cpu(p[2]), |
| 263 | be32_to_cpu(p[3])); |
| 264 | p += 4; |
| 265 | offset += 16; |
| 266 | } |
| 267 | if (!data_only) |
| 268 | pr_debug("\n"); |
| 269 | } |
| 270 | |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 271 | enum { |
| 272 | MLX5_DRIVER_STATUS_ABORTED = 0xfe, |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 273 | MLX5_DRIVER_SYND = 0xbadd00de, |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 274 | }; |
| 275 | |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 276 | static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op, |
| 277 | u32 *synd, u8 *status) |
| 278 | { |
| 279 | *synd = 0; |
| 280 | *status = 0; |
| 281 | |
| 282 | switch (op) { |
| 283 | case MLX5_CMD_OP_TEARDOWN_HCA: |
| 284 | case MLX5_CMD_OP_DISABLE_HCA: |
| 285 | case MLX5_CMD_OP_MANAGE_PAGES: |
| 286 | case MLX5_CMD_OP_DESTROY_MKEY: |
| 287 | case MLX5_CMD_OP_DESTROY_EQ: |
| 288 | case MLX5_CMD_OP_DESTROY_CQ: |
| 289 | case MLX5_CMD_OP_DESTROY_QP: |
| 290 | case MLX5_CMD_OP_DESTROY_PSV: |
| 291 | case MLX5_CMD_OP_DESTROY_SRQ: |
| 292 | case MLX5_CMD_OP_DESTROY_XRC_SRQ: |
| 293 | case MLX5_CMD_OP_DESTROY_DCT: |
| 294 | case MLX5_CMD_OP_DEALLOC_Q_COUNTER: |
| 295 | case MLX5_CMD_OP_DEALLOC_PD: |
| 296 | case MLX5_CMD_OP_DEALLOC_UAR: |
| 297 | case MLX5_CMD_OP_DETTACH_FROM_MCG: |
| 298 | case MLX5_CMD_OP_DEALLOC_XRCD: |
| 299 | case MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN: |
| 300 | case MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT: |
| 301 | case MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY: |
| 302 | case MLX5_CMD_OP_DESTROY_TIR: |
| 303 | case MLX5_CMD_OP_DESTROY_SQ: |
| 304 | case MLX5_CMD_OP_DESTROY_RQ: |
| 305 | case MLX5_CMD_OP_DESTROY_RMP: |
| 306 | case MLX5_CMD_OP_DESTROY_TIS: |
| 307 | case MLX5_CMD_OP_DESTROY_RQT: |
| 308 | case MLX5_CMD_OP_DESTROY_FLOW_TABLE: |
| 309 | case MLX5_CMD_OP_DESTROY_FLOW_GROUP: |
| 310 | case MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY: |
Amir Vadai | 9dc0b28 | 2016-05-13 12:55:39 +0000 | [diff] [blame] | 311 | case MLX5_CMD_OP_DEALLOC_FLOW_COUNTER: |
Mohamad Haj Yahia | 0d83444 | 2016-06-30 17:34:38 +0300 | [diff] [blame] | 312 | case MLX5_CMD_OP_2ERR_QP: |
| 313 | case MLX5_CMD_OP_2RST_QP: |
| 314 | case MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT: |
| 315 | case MLX5_CMD_OP_MODIFY_FLOW_TABLE: |
| 316 | case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY: |
| 317 | case MLX5_CMD_OP_SET_FLOW_TABLE_ROOT: |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 318 | return MLX5_CMD_STAT_OK; |
| 319 | |
| 320 | case MLX5_CMD_OP_QUERY_HCA_CAP: |
| 321 | case MLX5_CMD_OP_QUERY_ADAPTER: |
| 322 | case MLX5_CMD_OP_INIT_HCA: |
| 323 | case MLX5_CMD_OP_ENABLE_HCA: |
| 324 | case MLX5_CMD_OP_QUERY_PAGES: |
| 325 | case MLX5_CMD_OP_SET_HCA_CAP: |
| 326 | case MLX5_CMD_OP_QUERY_ISSI: |
| 327 | case MLX5_CMD_OP_SET_ISSI: |
| 328 | case MLX5_CMD_OP_CREATE_MKEY: |
| 329 | case MLX5_CMD_OP_QUERY_MKEY: |
| 330 | case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS: |
| 331 | case MLX5_CMD_OP_PAGE_FAULT_RESUME: |
| 332 | case MLX5_CMD_OP_CREATE_EQ: |
| 333 | case MLX5_CMD_OP_QUERY_EQ: |
| 334 | case MLX5_CMD_OP_GEN_EQE: |
| 335 | case MLX5_CMD_OP_CREATE_CQ: |
| 336 | case MLX5_CMD_OP_QUERY_CQ: |
| 337 | case MLX5_CMD_OP_MODIFY_CQ: |
| 338 | case MLX5_CMD_OP_CREATE_QP: |
| 339 | case MLX5_CMD_OP_RST2INIT_QP: |
| 340 | case MLX5_CMD_OP_INIT2RTR_QP: |
| 341 | case MLX5_CMD_OP_RTR2RTS_QP: |
| 342 | case MLX5_CMD_OP_RTS2RTS_QP: |
| 343 | case MLX5_CMD_OP_SQERR2RTS_QP: |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 344 | case MLX5_CMD_OP_QUERY_QP: |
| 345 | case MLX5_CMD_OP_SQD_RTS_QP: |
| 346 | case MLX5_CMD_OP_INIT2INIT_QP: |
| 347 | case MLX5_CMD_OP_CREATE_PSV: |
| 348 | case MLX5_CMD_OP_CREATE_SRQ: |
| 349 | case MLX5_CMD_OP_QUERY_SRQ: |
| 350 | case MLX5_CMD_OP_ARM_RQ: |
| 351 | case MLX5_CMD_OP_CREATE_XRC_SRQ: |
| 352 | case MLX5_CMD_OP_QUERY_XRC_SRQ: |
| 353 | case MLX5_CMD_OP_ARM_XRC_SRQ: |
| 354 | case MLX5_CMD_OP_CREATE_DCT: |
| 355 | case MLX5_CMD_OP_DRAIN_DCT: |
| 356 | case MLX5_CMD_OP_QUERY_DCT: |
| 357 | case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION: |
| 358 | case MLX5_CMD_OP_QUERY_VPORT_STATE: |
| 359 | case MLX5_CMD_OP_MODIFY_VPORT_STATE: |
| 360 | case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT: |
| 361 | case MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT: |
| 362 | case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT: |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 363 | case MLX5_CMD_OP_QUERY_ROCE_ADDRESS: |
| 364 | case MLX5_CMD_OP_SET_ROCE_ADDRESS: |
| 365 | case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT: |
| 366 | case MLX5_CMD_OP_MODIFY_HCA_VPORT_CONTEXT: |
| 367 | case MLX5_CMD_OP_QUERY_HCA_VPORT_GID: |
| 368 | case MLX5_CMD_OP_QUERY_HCA_VPORT_PKEY: |
| 369 | case MLX5_CMD_OP_QUERY_VPORT_COUNTER: |
| 370 | case MLX5_CMD_OP_ALLOC_Q_COUNTER: |
| 371 | case MLX5_CMD_OP_QUERY_Q_COUNTER: |
| 372 | case MLX5_CMD_OP_ALLOC_PD: |
| 373 | case MLX5_CMD_OP_ALLOC_UAR: |
| 374 | case MLX5_CMD_OP_CONFIG_INT_MODERATION: |
| 375 | case MLX5_CMD_OP_ACCESS_REG: |
| 376 | case MLX5_CMD_OP_ATTACH_TO_MCG: |
| 377 | case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG: |
| 378 | case MLX5_CMD_OP_MAD_IFC: |
| 379 | case MLX5_CMD_OP_QUERY_MAD_DEMUX: |
| 380 | case MLX5_CMD_OP_SET_MAD_DEMUX: |
| 381 | case MLX5_CMD_OP_NOP: |
| 382 | case MLX5_CMD_OP_ALLOC_XRCD: |
| 383 | case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN: |
| 384 | case MLX5_CMD_OP_QUERY_CONG_STATUS: |
| 385 | case MLX5_CMD_OP_MODIFY_CONG_STATUS: |
| 386 | case MLX5_CMD_OP_QUERY_CONG_PARAMS: |
| 387 | case MLX5_CMD_OP_MODIFY_CONG_PARAMS: |
| 388 | case MLX5_CMD_OP_QUERY_CONG_STATISTICS: |
| 389 | case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT: |
| 390 | case MLX5_CMD_OP_SET_L2_TABLE_ENTRY: |
| 391 | case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY: |
| 392 | case MLX5_CMD_OP_CREATE_TIR: |
| 393 | case MLX5_CMD_OP_MODIFY_TIR: |
| 394 | case MLX5_CMD_OP_QUERY_TIR: |
| 395 | case MLX5_CMD_OP_CREATE_SQ: |
| 396 | case MLX5_CMD_OP_MODIFY_SQ: |
| 397 | case MLX5_CMD_OP_QUERY_SQ: |
| 398 | case MLX5_CMD_OP_CREATE_RQ: |
| 399 | case MLX5_CMD_OP_MODIFY_RQ: |
| 400 | case MLX5_CMD_OP_QUERY_RQ: |
| 401 | case MLX5_CMD_OP_CREATE_RMP: |
| 402 | case MLX5_CMD_OP_MODIFY_RMP: |
| 403 | case MLX5_CMD_OP_QUERY_RMP: |
| 404 | case MLX5_CMD_OP_CREATE_TIS: |
| 405 | case MLX5_CMD_OP_MODIFY_TIS: |
| 406 | case MLX5_CMD_OP_QUERY_TIS: |
| 407 | case MLX5_CMD_OP_CREATE_RQT: |
| 408 | case MLX5_CMD_OP_MODIFY_RQT: |
| 409 | case MLX5_CMD_OP_QUERY_RQT: |
Mohamad Haj Yahia | 0d83444 | 2016-06-30 17:34:38 +0300 | [diff] [blame] | 410 | |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 411 | case MLX5_CMD_OP_CREATE_FLOW_TABLE: |
| 412 | case MLX5_CMD_OP_QUERY_FLOW_TABLE: |
| 413 | case MLX5_CMD_OP_CREATE_FLOW_GROUP: |
| 414 | case MLX5_CMD_OP_QUERY_FLOW_GROUP: |
Mohamad Haj Yahia | 0d83444 | 2016-06-30 17:34:38 +0300 | [diff] [blame] | 415 | |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 416 | case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY: |
Amir Vadai | 9dc0b28 | 2016-05-13 12:55:39 +0000 | [diff] [blame] | 417 | case MLX5_CMD_OP_ALLOC_FLOW_COUNTER: |
| 418 | case MLX5_CMD_OP_QUERY_FLOW_COUNTER: |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 419 | *status = MLX5_DRIVER_STATUS_ABORTED; |
| 420 | *synd = MLX5_DRIVER_SYND; |
| 421 | return -EIO; |
| 422 | default: |
| 423 | mlx5_core_err(dev, "Unknown FW command (%d)\n", op); |
| 424 | return -EINVAL; |
| 425 | } |
| 426 | } |
| 427 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 428 | const char *mlx5_command_str(int command) |
| 429 | { |
Amir Vadai | 42ca502 | 2016-05-13 12:55:38 +0000 | [diff] [blame] | 430 | #define MLX5_COMMAND_STR_CASE(__cmd) case MLX5_CMD_OP_ ## __cmd: return #__cmd |
| 431 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 432 | switch (command) { |
Amir Vadai | 42ca502 | 2016-05-13 12:55:38 +0000 | [diff] [blame] | 433 | MLX5_COMMAND_STR_CASE(QUERY_HCA_CAP); |
| 434 | MLX5_COMMAND_STR_CASE(QUERY_ADAPTER); |
| 435 | MLX5_COMMAND_STR_CASE(INIT_HCA); |
| 436 | MLX5_COMMAND_STR_CASE(TEARDOWN_HCA); |
| 437 | MLX5_COMMAND_STR_CASE(ENABLE_HCA); |
| 438 | MLX5_COMMAND_STR_CASE(DISABLE_HCA); |
| 439 | MLX5_COMMAND_STR_CASE(QUERY_PAGES); |
| 440 | MLX5_COMMAND_STR_CASE(MANAGE_PAGES); |
| 441 | MLX5_COMMAND_STR_CASE(SET_HCA_CAP); |
| 442 | MLX5_COMMAND_STR_CASE(QUERY_ISSI); |
| 443 | MLX5_COMMAND_STR_CASE(SET_ISSI); |
| 444 | MLX5_COMMAND_STR_CASE(CREATE_MKEY); |
| 445 | MLX5_COMMAND_STR_CASE(QUERY_MKEY); |
| 446 | MLX5_COMMAND_STR_CASE(DESTROY_MKEY); |
| 447 | MLX5_COMMAND_STR_CASE(QUERY_SPECIAL_CONTEXTS); |
| 448 | MLX5_COMMAND_STR_CASE(PAGE_FAULT_RESUME); |
| 449 | MLX5_COMMAND_STR_CASE(CREATE_EQ); |
| 450 | MLX5_COMMAND_STR_CASE(DESTROY_EQ); |
| 451 | MLX5_COMMAND_STR_CASE(QUERY_EQ); |
| 452 | MLX5_COMMAND_STR_CASE(GEN_EQE); |
| 453 | MLX5_COMMAND_STR_CASE(CREATE_CQ); |
| 454 | MLX5_COMMAND_STR_CASE(DESTROY_CQ); |
| 455 | MLX5_COMMAND_STR_CASE(QUERY_CQ); |
| 456 | MLX5_COMMAND_STR_CASE(MODIFY_CQ); |
| 457 | MLX5_COMMAND_STR_CASE(CREATE_QP); |
| 458 | MLX5_COMMAND_STR_CASE(DESTROY_QP); |
| 459 | MLX5_COMMAND_STR_CASE(RST2INIT_QP); |
| 460 | MLX5_COMMAND_STR_CASE(INIT2RTR_QP); |
| 461 | MLX5_COMMAND_STR_CASE(RTR2RTS_QP); |
| 462 | MLX5_COMMAND_STR_CASE(RTS2RTS_QP); |
| 463 | MLX5_COMMAND_STR_CASE(SQERR2RTS_QP); |
| 464 | MLX5_COMMAND_STR_CASE(2ERR_QP); |
| 465 | MLX5_COMMAND_STR_CASE(2RST_QP); |
| 466 | MLX5_COMMAND_STR_CASE(QUERY_QP); |
| 467 | MLX5_COMMAND_STR_CASE(SQD_RTS_QP); |
| 468 | MLX5_COMMAND_STR_CASE(INIT2INIT_QP); |
| 469 | MLX5_COMMAND_STR_CASE(CREATE_PSV); |
| 470 | MLX5_COMMAND_STR_CASE(DESTROY_PSV); |
| 471 | MLX5_COMMAND_STR_CASE(CREATE_SRQ); |
| 472 | MLX5_COMMAND_STR_CASE(DESTROY_SRQ); |
| 473 | MLX5_COMMAND_STR_CASE(QUERY_SRQ); |
| 474 | MLX5_COMMAND_STR_CASE(ARM_RQ); |
| 475 | MLX5_COMMAND_STR_CASE(CREATE_XRC_SRQ); |
| 476 | MLX5_COMMAND_STR_CASE(DESTROY_XRC_SRQ); |
| 477 | MLX5_COMMAND_STR_CASE(QUERY_XRC_SRQ); |
| 478 | MLX5_COMMAND_STR_CASE(ARM_XRC_SRQ); |
| 479 | MLX5_COMMAND_STR_CASE(CREATE_DCT); |
| 480 | MLX5_COMMAND_STR_CASE(DESTROY_DCT); |
| 481 | MLX5_COMMAND_STR_CASE(DRAIN_DCT); |
| 482 | MLX5_COMMAND_STR_CASE(QUERY_DCT); |
| 483 | MLX5_COMMAND_STR_CASE(ARM_DCT_FOR_KEY_VIOLATION); |
| 484 | MLX5_COMMAND_STR_CASE(QUERY_VPORT_STATE); |
| 485 | MLX5_COMMAND_STR_CASE(MODIFY_VPORT_STATE); |
| 486 | MLX5_COMMAND_STR_CASE(QUERY_ESW_VPORT_CONTEXT); |
| 487 | MLX5_COMMAND_STR_CASE(MODIFY_ESW_VPORT_CONTEXT); |
| 488 | MLX5_COMMAND_STR_CASE(QUERY_NIC_VPORT_CONTEXT); |
| 489 | MLX5_COMMAND_STR_CASE(MODIFY_NIC_VPORT_CONTEXT); |
| 490 | MLX5_COMMAND_STR_CASE(QUERY_ROCE_ADDRESS); |
| 491 | MLX5_COMMAND_STR_CASE(SET_ROCE_ADDRESS); |
| 492 | MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_CONTEXT); |
| 493 | MLX5_COMMAND_STR_CASE(MODIFY_HCA_VPORT_CONTEXT); |
| 494 | MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_GID); |
| 495 | MLX5_COMMAND_STR_CASE(QUERY_HCA_VPORT_PKEY); |
| 496 | MLX5_COMMAND_STR_CASE(QUERY_VPORT_COUNTER); |
| 497 | MLX5_COMMAND_STR_CASE(ALLOC_Q_COUNTER); |
| 498 | MLX5_COMMAND_STR_CASE(DEALLOC_Q_COUNTER); |
| 499 | MLX5_COMMAND_STR_CASE(QUERY_Q_COUNTER); |
| 500 | MLX5_COMMAND_STR_CASE(ALLOC_PD); |
| 501 | MLX5_COMMAND_STR_CASE(DEALLOC_PD); |
| 502 | MLX5_COMMAND_STR_CASE(ALLOC_UAR); |
| 503 | MLX5_COMMAND_STR_CASE(DEALLOC_UAR); |
| 504 | MLX5_COMMAND_STR_CASE(CONFIG_INT_MODERATION); |
| 505 | MLX5_COMMAND_STR_CASE(ACCESS_REG); |
| 506 | MLX5_COMMAND_STR_CASE(ATTACH_TO_MCG); |
| 507 | MLX5_COMMAND_STR_CASE(DETTACH_FROM_MCG); |
| 508 | MLX5_COMMAND_STR_CASE(GET_DROPPED_PACKET_LOG); |
| 509 | MLX5_COMMAND_STR_CASE(MAD_IFC); |
| 510 | MLX5_COMMAND_STR_CASE(QUERY_MAD_DEMUX); |
| 511 | MLX5_COMMAND_STR_CASE(SET_MAD_DEMUX); |
| 512 | MLX5_COMMAND_STR_CASE(NOP); |
| 513 | MLX5_COMMAND_STR_CASE(ALLOC_XRCD); |
| 514 | MLX5_COMMAND_STR_CASE(DEALLOC_XRCD); |
| 515 | MLX5_COMMAND_STR_CASE(ALLOC_TRANSPORT_DOMAIN); |
| 516 | MLX5_COMMAND_STR_CASE(DEALLOC_TRANSPORT_DOMAIN); |
| 517 | MLX5_COMMAND_STR_CASE(QUERY_CONG_STATUS); |
| 518 | MLX5_COMMAND_STR_CASE(MODIFY_CONG_STATUS); |
| 519 | MLX5_COMMAND_STR_CASE(QUERY_CONG_PARAMS); |
| 520 | MLX5_COMMAND_STR_CASE(MODIFY_CONG_PARAMS); |
| 521 | MLX5_COMMAND_STR_CASE(QUERY_CONG_STATISTICS); |
| 522 | MLX5_COMMAND_STR_CASE(ADD_VXLAN_UDP_DPORT); |
| 523 | MLX5_COMMAND_STR_CASE(DELETE_VXLAN_UDP_DPORT); |
| 524 | MLX5_COMMAND_STR_CASE(SET_L2_TABLE_ENTRY); |
| 525 | MLX5_COMMAND_STR_CASE(QUERY_L2_TABLE_ENTRY); |
| 526 | MLX5_COMMAND_STR_CASE(DELETE_L2_TABLE_ENTRY); |
| 527 | MLX5_COMMAND_STR_CASE(SET_WOL_ROL); |
| 528 | MLX5_COMMAND_STR_CASE(QUERY_WOL_ROL); |
| 529 | MLX5_COMMAND_STR_CASE(CREATE_TIR); |
| 530 | MLX5_COMMAND_STR_CASE(MODIFY_TIR); |
| 531 | MLX5_COMMAND_STR_CASE(DESTROY_TIR); |
| 532 | MLX5_COMMAND_STR_CASE(QUERY_TIR); |
| 533 | MLX5_COMMAND_STR_CASE(CREATE_SQ); |
| 534 | MLX5_COMMAND_STR_CASE(MODIFY_SQ); |
| 535 | MLX5_COMMAND_STR_CASE(DESTROY_SQ); |
| 536 | MLX5_COMMAND_STR_CASE(QUERY_SQ); |
| 537 | MLX5_COMMAND_STR_CASE(CREATE_RQ); |
| 538 | MLX5_COMMAND_STR_CASE(MODIFY_RQ); |
| 539 | MLX5_COMMAND_STR_CASE(DESTROY_RQ); |
| 540 | MLX5_COMMAND_STR_CASE(QUERY_RQ); |
| 541 | MLX5_COMMAND_STR_CASE(CREATE_RMP); |
| 542 | MLX5_COMMAND_STR_CASE(MODIFY_RMP); |
| 543 | MLX5_COMMAND_STR_CASE(DESTROY_RMP); |
| 544 | MLX5_COMMAND_STR_CASE(QUERY_RMP); |
| 545 | MLX5_COMMAND_STR_CASE(CREATE_TIS); |
| 546 | MLX5_COMMAND_STR_CASE(MODIFY_TIS); |
| 547 | MLX5_COMMAND_STR_CASE(DESTROY_TIS); |
| 548 | MLX5_COMMAND_STR_CASE(QUERY_TIS); |
| 549 | MLX5_COMMAND_STR_CASE(CREATE_RQT); |
| 550 | MLX5_COMMAND_STR_CASE(MODIFY_RQT); |
| 551 | MLX5_COMMAND_STR_CASE(DESTROY_RQT); |
| 552 | MLX5_COMMAND_STR_CASE(QUERY_RQT); |
| 553 | MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ROOT); |
| 554 | MLX5_COMMAND_STR_CASE(CREATE_FLOW_TABLE); |
| 555 | MLX5_COMMAND_STR_CASE(DESTROY_FLOW_TABLE); |
| 556 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE); |
| 557 | MLX5_COMMAND_STR_CASE(CREATE_FLOW_GROUP); |
| 558 | MLX5_COMMAND_STR_CASE(DESTROY_FLOW_GROUP); |
| 559 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_GROUP); |
| 560 | MLX5_COMMAND_STR_CASE(SET_FLOW_TABLE_ENTRY); |
| 561 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_TABLE_ENTRY); |
| 562 | MLX5_COMMAND_STR_CASE(DELETE_FLOW_TABLE_ENTRY); |
Amir Vadai | 9dc0b28 | 2016-05-13 12:55:39 +0000 | [diff] [blame] | 563 | MLX5_COMMAND_STR_CASE(ALLOC_FLOW_COUNTER); |
| 564 | MLX5_COMMAND_STR_CASE(DEALLOC_FLOW_COUNTER); |
| 565 | MLX5_COMMAND_STR_CASE(QUERY_FLOW_COUNTER); |
Eli Cohen | 5be1ea8 | 2016-06-27 12:08:32 +0300 | [diff] [blame] | 566 | MLX5_COMMAND_STR_CASE(MODIFY_FLOW_TABLE); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 567 | default: return "unknown command opcode"; |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | static void dump_command(struct mlx5_core_dev *dev, |
| 572 | struct mlx5_cmd_work_ent *ent, int input) |
| 573 | { |
| 574 | u16 op = be16_to_cpu(((struct mlx5_inbox_hdr *)(ent->lay->in))->opcode); |
| 575 | struct mlx5_cmd_msg *msg = input ? ent->in : ent->out; |
| 576 | struct mlx5_cmd_mailbox *next = msg->next; |
| 577 | int data_only; |
Jack Morgenstein | f241e74 | 2014-07-28 23:30:23 +0300 | [diff] [blame] | 578 | u32 offset = 0; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 579 | int dump_len; |
| 580 | |
| 581 | data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA)); |
| 582 | |
| 583 | if (data_only) |
| 584 | mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA, |
| 585 | "dump command data %s(0x%x) %s\n", |
| 586 | mlx5_command_str(op), op, |
| 587 | input ? "INPUT" : "OUTPUT"); |
| 588 | else |
| 589 | mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n", |
| 590 | mlx5_command_str(op), op, |
| 591 | input ? "INPUT" : "OUTPUT"); |
| 592 | |
| 593 | if (data_only) { |
| 594 | if (input) { |
| 595 | dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset); |
| 596 | offset += sizeof(ent->lay->in); |
| 597 | } else { |
| 598 | dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset); |
| 599 | offset += sizeof(ent->lay->out); |
| 600 | } |
| 601 | } else { |
| 602 | dump_buf(ent->lay, sizeof(*ent->lay), 0, offset); |
| 603 | offset += sizeof(*ent->lay); |
| 604 | } |
| 605 | |
| 606 | while (next && offset < msg->len) { |
| 607 | if (data_only) { |
| 608 | dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg->len - offset); |
| 609 | dump_buf(next->buf, dump_len, 1, offset); |
| 610 | offset += MLX5_CMD_DATA_BLOCK_SIZE; |
| 611 | } else { |
| 612 | mlx5_core_dbg(dev, "command block:\n"); |
| 613 | dump_buf(next->buf, sizeof(struct mlx5_cmd_prot_block), 0, offset); |
| 614 | offset += sizeof(struct mlx5_cmd_prot_block); |
| 615 | } |
| 616 | next = next->next; |
| 617 | } |
| 618 | |
| 619 | if (data_only) |
| 620 | pr_debug("\n"); |
| 621 | } |
| 622 | |
Mohamad Haj Yahia | 65ee670 | 2016-06-30 17:34:43 +0300 | [diff] [blame] | 623 | static u16 msg_to_opcode(struct mlx5_cmd_msg *in) |
| 624 | { |
| 625 | struct mlx5_inbox_hdr *hdr = (struct mlx5_inbox_hdr *)(in->first.data); |
| 626 | |
| 627 | return be16_to_cpu(hdr->opcode); |
| 628 | } |
| 629 | |
| 630 | static void cb_timeout_handler(struct work_struct *work) |
| 631 | { |
| 632 | struct delayed_work *dwork = container_of(work, struct delayed_work, |
| 633 | work); |
| 634 | struct mlx5_cmd_work_ent *ent = container_of(dwork, |
| 635 | struct mlx5_cmd_work_ent, |
| 636 | cb_timeout_work); |
| 637 | struct mlx5_core_dev *dev = container_of(ent->cmd, struct mlx5_core_dev, |
| 638 | cmd); |
| 639 | |
| 640 | ent->ret = -ETIMEDOUT; |
| 641 | mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", |
| 642 | mlx5_command_str(msg_to_opcode(ent->in)), |
| 643 | msg_to_opcode(ent->in)); |
| 644 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx); |
| 645 | } |
| 646 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 647 | static void cmd_work_handler(struct work_struct *work) |
| 648 | { |
| 649 | struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work); |
| 650 | struct mlx5_cmd *cmd = ent->cmd; |
| 651 | struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd); |
Mohamad Haj Yahia | 65ee670 | 2016-06-30 17:34:43 +0300 | [diff] [blame] | 652 | unsigned long cb_timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 653 | struct mlx5_cmd_layout *lay; |
| 654 | struct semaphore *sem; |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 655 | unsigned long flags; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 656 | |
| 657 | sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem; |
| 658 | down(sem); |
| 659 | if (!ent->page_queue) { |
| 660 | ent->idx = alloc_ent(cmd); |
| 661 | if (ent->idx < 0) { |
| 662 | mlx5_core_err(dev, "failed to allocate command entry\n"); |
| 663 | up(sem); |
| 664 | return; |
| 665 | } |
| 666 | } else { |
| 667 | ent->idx = cmd->max_reg_cmds; |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 668 | spin_lock_irqsave(&cmd->alloc_lock, flags); |
| 669 | clear_bit(ent->idx, &cmd->bitmask); |
| 670 | spin_unlock_irqrestore(&cmd->alloc_lock, flags); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 671 | } |
| 672 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 673 | cmd->ent_arr[ent->idx] = ent; |
| 674 | lay = get_inst(cmd, ent->idx); |
| 675 | ent->lay = lay; |
| 676 | memset(lay, 0, sizeof(*lay)); |
| 677 | memcpy(lay->in, ent->in->first.data, sizeof(lay->in)); |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 678 | ent->op = be32_to_cpu(lay->in[0]) >> 16; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 679 | if (ent->in->next) |
| 680 | lay->in_ptr = cpu_to_be64(ent->in->next->dma); |
| 681 | lay->inlen = cpu_to_be32(ent->in->len); |
| 682 | if (ent->out->next) |
| 683 | lay->out_ptr = cpu_to_be64(ent->out->next->dma); |
| 684 | lay->outlen = cpu_to_be32(ent->out->len); |
| 685 | lay->type = MLX5_PCI_CMD_XPORT; |
| 686 | lay->token = ent->token; |
| 687 | lay->status_own = CMD_OWNER_HW; |
Eli Cohen | c1868b8 | 2013-09-11 16:35:25 +0300 | [diff] [blame] | 688 | set_signature(ent, !cmd->checksum_disabled); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 689 | dump_command(dev, ent, 1); |
Thomas Gleixner | 14a7004 | 2014-07-16 21:04:44 +0000 | [diff] [blame] | 690 | ent->ts1 = ktime_get_ns(); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 691 | |
Mohamad Haj Yahia | 65ee670 | 2016-06-30 17:34:43 +0300 | [diff] [blame] | 692 | if (ent->callback) |
| 693 | schedule_delayed_work(&ent->cb_timeout_work, cb_timeout); |
| 694 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 695 | /* ring doorbell after the descriptor is valid */ |
Ira Gusinsky | 21db507 | 2015-04-02 17:07:27 +0300 | [diff] [blame] | 696 | mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 697 | wmb(); |
| 698 | iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 699 | mmiowb(); |
Ira Gusinsky | 21db507 | 2015-04-02 17:07:27 +0300 | [diff] [blame] | 700 | /* if not in polling don't use ent after this point */ |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 701 | if (cmd->mode == CMD_MODE_POLLING) { |
| 702 | poll_timeout(ent); |
| 703 | /* make sure we read the descriptor after ownership is SW */ |
| 704 | rmb(); |
| 705 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx); |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | static const char *deliv_status_to_str(u8 status) |
| 710 | { |
| 711 | switch (status) { |
| 712 | case MLX5_CMD_DELIVERY_STAT_OK: |
| 713 | return "no errors"; |
| 714 | case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR: |
| 715 | return "signature error"; |
| 716 | case MLX5_CMD_DELIVERY_STAT_TOK_ERR: |
| 717 | return "token error"; |
| 718 | case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR: |
| 719 | return "bad block number"; |
| 720 | case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR: |
| 721 | return "output pointer not aligned to block size"; |
| 722 | case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR: |
| 723 | return "input pointer not aligned to block size"; |
| 724 | case MLX5_CMD_DELIVERY_STAT_FW_ERR: |
| 725 | return "firmware internal error"; |
| 726 | case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR: |
| 727 | return "command input length error"; |
| 728 | case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR: |
| 729 | return "command ouput length error"; |
| 730 | case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR: |
| 731 | return "reserved fields not cleared"; |
| 732 | case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR: |
| 733 | return "bad command descriptor type"; |
| 734 | default: |
| 735 | return "unknown status code"; |
| 736 | } |
| 737 | } |
| 738 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 739 | static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent) |
| 740 | { |
| 741 | unsigned long timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC); |
| 742 | struct mlx5_cmd *cmd = &dev->cmd; |
| 743 | int err; |
| 744 | |
| 745 | if (cmd->mode == CMD_MODE_POLLING) { |
| 746 | wait_for_completion(&ent->done); |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 747 | } else if (!wait_for_completion_timeout(&ent->done, timeout)) { |
| 748 | ent->ret = -ETIMEDOUT; |
| 749 | mlx5_cmd_comp_handler(dev, 1UL << ent->idx); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 750 | } |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 751 | |
| 752 | err = ent->ret; |
| 753 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 754 | if (err == -ETIMEDOUT) { |
| 755 | mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n", |
| 756 | mlx5_command_str(msg_to_opcode(ent->in)), |
| 757 | msg_to_opcode(ent->in)); |
| 758 | } |
Joe Perches | 1a91de2 | 2014-05-07 12:52:57 -0700 | [diff] [blame] | 759 | mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n", |
| 760 | err, deliv_status_to_str(ent->status), ent->status); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 761 | |
| 762 | return err; |
| 763 | } |
| 764 | |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 765 | static __be32 *get_synd_ptr(struct mlx5_outbox_hdr *out) |
| 766 | { |
| 767 | return &out->syndrome; |
| 768 | } |
| 769 | |
| 770 | static u8 *get_status_ptr(struct mlx5_outbox_hdr *out) |
| 771 | { |
| 772 | return &out->status; |
| 773 | } |
| 774 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 775 | /* Notes: |
| 776 | * 1. Callback functions may not sleep |
| 777 | * 2. page queue commands do not support asynchrous completion |
| 778 | */ |
| 779 | static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in, |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 780 | struct mlx5_cmd_msg *out, void *uout, int uout_size, |
| 781 | mlx5_cmd_cbk_t callback, |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 782 | void *context, int page_queue, u8 *status, |
| 783 | u8 token) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 784 | { |
| 785 | struct mlx5_cmd *cmd = &dev->cmd; |
| 786 | struct mlx5_cmd_work_ent *ent; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 787 | struct mlx5_cmd_stats *stats; |
| 788 | int err = 0; |
| 789 | s64 ds; |
| 790 | u16 op; |
| 791 | |
| 792 | if (callback && page_queue) |
| 793 | return -EINVAL; |
| 794 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 795 | ent = alloc_cmd(cmd, in, out, uout, uout_size, callback, context, |
| 796 | page_queue); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 797 | if (IS_ERR(ent)) |
| 798 | return PTR_ERR(ent); |
| 799 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 800 | ent->token = token; |
| 801 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 802 | if (!callback) |
| 803 | init_completion(&ent->done); |
| 804 | |
Mohamad Haj Yahia | 65ee670 | 2016-06-30 17:34:43 +0300 | [diff] [blame] | 805 | INIT_DELAYED_WORK(&ent->cb_timeout_work, cb_timeout_handler); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 806 | INIT_WORK(&ent->work, cmd_work_handler); |
| 807 | if (page_queue) { |
| 808 | cmd_work_handler(&ent->work); |
| 809 | } else if (!queue_work(cmd->wq, &ent->work)) { |
| 810 | mlx5_core_warn(dev, "failed to queue work\n"); |
| 811 | err = -ENOMEM; |
| 812 | goto out_free; |
| 813 | } |
| 814 | |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 815 | if (callback) |
| 816 | goto out; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 817 | |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 818 | err = wait_func(dev, ent); |
| 819 | if (err == -ETIMEDOUT) |
| 820 | goto out_free; |
| 821 | |
| 822 | ds = ent->ts2 - ent->ts1; |
| 823 | op = be16_to_cpu(((struct mlx5_inbox_hdr *)in->first.data)->opcode); |
| 824 | if (op < ARRAY_SIZE(cmd->stats)) { |
| 825 | stats = &cmd->stats[op]; |
| 826 | spin_lock_irq(&stats->lock); |
| 827 | stats->sum += ds; |
| 828 | ++stats->n; |
| 829 | spin_unlock_irq(&stats->lock); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 830 | } |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 831 | mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME, |
| 832 | "fw exec time for %s is %lld nsec\n", |
| 833 | mlx5_command_str(op), ds); |
| 834 | *status = ent->status; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 835 | |
| 836 | out_free: |
| 837 | free_cmd(ent); |
| 838 | out: |
| 839 | return err; |
| 840 | } |
| 841 | |
| 842 | static ssize_t dbg_write(struct file *filp, const char __user *buf, |
| 843 | size_t count, loff_t *pos) |
| 844 | { |
| 845 | struct mlx5_core_dev *dev = filp->private_data; |
| 846 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; |
| 847 | char lbuf[3]; |
| 848 | int err; |
| 849 | |
| 850 | if (!dbg->in_msg || !dbg->out_msg) |
| 851 | return -ENOMEM; |
| 852 | |
| 853 | if (copy_from_user(lbuf, buf, sizeof(lbuf))) |
Dan Carpenter | 5e631a0 | 2013-07-10 13:58:59 +0300 | [diff] [blame] | 854 | return -EFAULT; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 855 | |
| 856 | lbuf[sizeof(lbuf) - 1] = 0; |
| 857 | |
| 858 | if (strcmp(lbuf, "go")) |
| 859 | return -EINVAL; |
| 860 | |
| 861 | err = mlx5_cmd_exec(dev, dbg->in_msg, dbg->inlen, dbg->out_msg, dbg->outlen); |
| 862 | |
| 863 | return err ? err : count; |
| 864 | } |
| 865 | |
| 866 | |
| 867 | static const struct file_operations fops = { |
| 868 | .owner = THIS_MODULE, |
| 869 | .open = simple_open, |
| 870 | .write = dbg_write, |
| 871 | }; |
| 872 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 873 | static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size, |
| 874 | u8 token) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 875 | { |
| 876 | struct mlx5_cmd_prot_block *block; |
| 877 | struct mlx5_cmd_mailbox *next; |
| 878 | int copy; |
| 879 | |
| 880 | if (!to || !from) |
| 881 | return -ENOMEM; |
| 882 | |
| 883 | copy = min_t(int, size, sizeof(to->first.data)); |
| 884 | memcpy(to->first.data, from, copy); |
| 885 | size -= copy; |
| 886 | from += copy; |
| 887 | |
| 888 | next = to->next; |
| 889 | while (size) { |
| 890 | if (!next) { |
| 891 | /* this is a BUG */ |
| 892 | return -ENOMEM; |
| 893 | } |
| 894 | |
| 895 | copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE); |
| 896 | block = next->buf; |
| 897 | memcpy(block->data, from, copy); |
| 898 | from += copy; |
| 899 | size -= copy; |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 900 | block->token = token; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 901 | next = next->next; |
| 902 | } |
| 903 | |
| 904 | return 0; |
| 905 | } |
| 906 | |
| 907 | static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size) |
| 908 | { |
| 909 | struct mlx5_cmd_prot_block *block; |
| 910 | struct mlx5_cmd_mailbox *next; |
| 911 | int copy; |
| 912 | |
| 913 | if (!to || !from) |
| 914 | return -ENOMEM; |
| 915 | |
| 916 | copy = min_t(int, size, sizeof(from->first.data)); |
| 917 | memcpy(to, from->first.data, copy); |
| 918 | size -= copy; |
| 919 | to += copy; |
| 920 | |
| 921 | next = from->next; |
| 922 | while (size) { |
| 923 | if (!next) { |
| 924 | /* this is a BUG */ |
| 925 | return -ENOMEM; |
| 926 | } |
| 927 | |
| 928 | copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE); |
| 929 | block = next->buf; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 930 | |
| 931 | memcpy(to, block->data, copy); |
| 932 | to += copy; |
| 933 | size -= copy; |
| 934 | next = next->next; |
| 935 | } |
| 936 | |
| 937 | return 0; |
| 938 | } |
| 939 | |
| 940 | static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev, |
| 941 | gfp_t flags) |
| 942 | { |
| 943 | struct mlx5_cmd_mailbox *mailbox; |
| 944 | |
| 945 | mailbox = kmalloc(sizeof(*mailbox), flags); |
| 946 | if (!mailbox) |
| 947 | return ERR_PTR(-ENOMEM); |
| 948 | |
| 949 | mailbox->buf = pci_pool_alloc(dev->cmd.pool, flags, |
| 950 | &mailbox->dma); |
| 951 | if (!mailbox->buf) { |
| 952 | mlx5_core_dbg(dev, "failed allocation\n"); |
| 953 | kfree(mailbox); |
| 954 | return ERR_PTR(-ENOMEM); |
| 955 | } |
| 956 | memset(mailbox->buf, 0, sizeof(struct mlx5_cmd_prot_block)); |
| 957 | mailbox->next = NULL; |
| 958 | |
| 959 | return mailbox; |
| 960 | } |
| 961 | |
| 962 | static void free_cmd_box(struct mlx5_core_dev *dev, |
| 963 | struct mlx5_cmd_mailbox *mailbox) |
| 964 | { |
| 965 | pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma); |
| 966 | kfree(mailbox); |
| 967 | } |
| 968 | |
| 969 | static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev, |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 970 | gfp_t flags, int size, |
| 971 | u8 token) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 972 | { |
| 973 | struct mlx5_cmd_mailbox *tmp, *head = NULL; |
| 974 | struct mlx5_cmd_prot_block *block; |
| 975 | struct mlx5_cmd_msg *msg; |
| 976 | int blen; |
| 977 | int err; |
| 978 | int n; |
| 979 | int i; |
| 980 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 981 | msg = kzalloc(sizeof(*msg), flags); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 982 | if (!msg) |
| 983 | return ERR_PTR(-ENOMEM); |
| 984 | |
| 985 | blen = size - min_t(int, sizeof(msg->first.data), size); |
| 986 | n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) / MLX5_CMD_DATA_BLOCK_SIZE; |
| 987 | |
| 988 | for (i = 0; i < n; i++) { |
| 989 | tmp = alloc_cmd_box(dev, flags); |
| 990 | if (IS_ERR(tmp)) { |
| 991 | mlx5_core_warn(dev, "failed allocating block\n"); |
| 992 | err = PTR_ERR(tmp); |
| 993 | goto err_alloc; |
| 994 | } |
| 995 | |
| 996 | block = tmp->buf; |
| 997 | tmp->next = head; |
| 998 | block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0); |
| 999 | block->block_num = cpu_to_be32(n - i - 1); |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1000 | block->token = token; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1001 | head = tmp; |
| 1002 | } |
| 1003 | msg->next = head; |
| 1004 | msg->len = size; |
| 1005 | return msg; |
| 1006 | |
| 1007 | err_alloc: |
| 1008 | while (head) { |
| 1009 | tmp = head->next; |
| 1010 | free_cmd_box(dev, head); |
| 1011 | head = tmp; |
| 1012 | } |
| 1013 | kfree(msg); |
| 1014 | |
| 1015 | return ERR_PTR(err); |
| 1016 | } |
| 1017 | |
| 1018 | static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev, |
| 1019 | struct mlx5_cmd_msg *msg) |
| 1020 | { |
| 1021 | struct mlx5_cmd_mailbox *head = msg->next; |
| 1022 | struct mlx5_cmd_mailbox *next; |
| 1023 | |
| 1024 | while (head) { |
| 1025 | next = head->next; |
| 1026 | free_cmd_box(dev, head); |
| 1027 | head = next; |
| 1028 | } |
| 1029 | kfree(msg); |
| 1030 | } |
| 1031 | |
| 1032 | static ssize_t data_write(struct file *filp, const char __user *buf, |
| 1033 | size_t count, loff_t *pos) |
| 1034 | { |
| 1035 | struct mlx5_core_dev *dev = filp->private_data; |
| 1036 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; |
| 1037 | void *ptr; |
| 1038 | int err; |
| 1039 | |
| 1040 | if (*pos != 0) |
| 1041 | return -EINVAL; |
| 1042 | |
| 1043 | kfree(dbg->in_msg); |
| 1044 | dbg->in_msg = NULL; |
| 1045 | dbg->inlen = 0; |
| 1046 | |
| 1047 | ptr = kzalloc(count, GFP_KERNEL); |
| 1048 | if (!ptr) |
| 1049 | return -ENOMEM; |
| 1050 | |
| 1051 | if (copy_from_user(ptr, buf, count)) { |
Dan Carpenter | 5e631a0 | 2013-07-10 13:58:59 +0300 | [diff] [blame] | 1052 | err = -EFAULT; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1053 | goto out; |
| 1054 | } |
| 1055 | dbg->in_msg = ptr; |
| 1056 | dbg->inlen = count; |
| 1057 | |
| 1058 | *pos = count; |
| 1059 | |
| 1060 | return count; |
| 1061 | |
| 1062 | out: |
| 1063 | kfree(ptr); |
| 1064 | return err; |
| 1065 | } |
| 1066 | |
| 1067 | static ssize_t data_read(struct file *filp, char __user *buf, size_t count, |
| 1068 | loff_t *pos) |
| 1069 | { |
| 1070 | struct mlx5_core_dev *dev = filp->private_data; |
| 1071 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; |
| 1072 | int copy; |
| 1073 | |
| 1074 | if (*pos) |
| 1075 | return 0; |
| 1076 | |
| 1077 | if (!dbg->out_msg) |
| 1078 | return -ENOMEM; |
| 1079 | |
| 1080 | copy = min_t(int, count, dbg->outlen); |
| 1081 | if (copy_to_user(buf, dbg->out_msg, copy)) |
Dan Carpenter | 5e631a0 | 2013-07-10 13:58:59 +0300 | [diff] [blame] | 1082 | return -EFAULT; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1083 | |
| 1084 | *pos += copy; |
| 1085 | |
| 1086 | return copy; |
| 1087 | } |
| 1088 | |
| 1089 | static const struct file_operations dfops = { |
| 1090 | .owner = THIS_MODULE, |
| 1091 | .open = simple_open, |
| 1092 | .write = data_write, |
| 1093 | .read = data_read, |
| 1094 | }; |
| 1095 | |
| 1096 | static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count, |
| 1097 | loff_t *pos) |
| 1098 | { |
| 1099 | struct mlx5_core_dev *dev = filp->private_data; |
| 1100 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; |
| 1101 | char outlen[8]; |
| 1102 | int err; |
| 1103 | |
| 1104 | if (*pos) |
| 1105 | return 0; |
| 1106 | |
| 1107 | err = snprintf(outlen, sizeof(outlen), "%d", dbg->outlen); |
| 1108 | if (err < 0) |
| 1109 | return err; |
| 1110 | |
| 1111 | if (copy_to_user(buf, &outlen, err)) |
Dan Carpenter | 5e631a0 | 2013-07-10 13:58:59 +0300 | [diff] [blame] | 1112 | return -EFAULT; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1113 | |
| 1114 | *pos += err; |
| 1115 | |
| 1116 | return err; |
| 1117 | } |
| 1118 | |
| 1119 | static ssize_t outlen_write(struct file *filp, const char __user *buf, |
| 1120 | size_t count, loff_t *pos) |
| 1121 | { |
| 1122 | struct mlx5_core_dev *dev = filp->private_data; |
| 1123 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; |
| 1124 | char outlen_str[8]; |
| 1125 | int outlen; |
| 1126 | void *ptr; |
| 1127 | int err; |
| 1128 | |
| 1129 | if (*pos != 0 || count > 6) |
| 1130 | return -EINVAL; |
| 1131 | |
| 1132 | kfree(dbg->out_msg); |
| 1133 | dbg->out_msg = NULL; |
| 1134 | dbg->outlen = 0; |
| 1135 | |
| 1136 | if (copy_from_user(outlen_str, buf, count)) |
Dan Carpenter | 5e631a0 | 2013-07-10 13:58:59 +0300 | [diff] [blame] | 1137 | return -EFAULT; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1138 | |
| 1139 | outlen_str[7] = 0; |
| 1140 | |
| 1141 | err = sscanf(outlen_str, "%d", &outlen); |
| 1142 | if (err < 0) |
| 1143 | return err; |
| 1144 | |
| 1145 | ptr = kzalloc(outlen, GFP_KERNEL); |
| 1146 | if (!ptr) |
| 1147 | return -ENOMEM; |
| 1148 | |
| 1149 | dbg->out_msg = ptr; |
| 1150 | dbg->outlen = outlen; |
| 1151 | |
| 1152 | *pos = count; |
| 1153 | |
| 1154 | return count; |
| 1155 | } |
| 1156 | |
| 1157 | static const struct file_operations olfops = { |
| 1158 | .owner = THIS_MODULE, |
| 1159 | .open = simple_open, |
| 1160 | .write = outlen_write, |
| 1161 | .read = outlen_read, |
| 1162 | }; |
| 1163 | |
| 1164 | static void set_wqname(struct mlx5_core_dev *dev) |
| 1165 | { |
| 1166 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1167 | |
| 1168 | snprintf(cmd->wq_name, sizeof(cmd->wq_name), "mlx5_cmd_%s", |
| 1169 | dev_name(&dev->pdev->dev)); |
| 1170 | } |
| 1171 | |
| 1172 | static void clean_debug_files(struct mlx5_core_dev *dev) |
| 1173 | { |
| 1174 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; |
| 1175 | |
| 1176 | if (!mlx5_debugfs_root) |
| 1177 | return; |
| 1178 | |
| 1179 | mlx5_cmdif_debugfs_cleanup(dev); |
| 1180 | debugfs_remove_recursive(dbg->dbg_root); |
| 1181 | } |
| 1182 | |
| 1183 | static int create_debugfs_files(struct mlx5_core_dev *dev) |
| 1184 | { |
| 1185 | struct mlx5_cmd_debug *dbg = &dev->cmd.dbg; |
| 1186 | int err = -ENOMEM; |
| 1187 | |
| 1188 | if (!mlx5_debugfs_root) |
| 1189 | return 0; |
| 1190 | |
| 1191 | dbg->dbg_root = debugfs_create_dir("cmd", dev->priv.dbg_root); |
| 1192 | if (!dbg->dbg_root) |
| 1193 | return err; |
| 1194 | |
| 1195 | dbg->dbg_in = debugfs_create_file("in", 0400, dbg->dbg_root, |
| 1196 | dev, &dfops); |
| 1197 | if (!dbg->dbg_in) |
| 1198 | goto err_dbg; |
| 1199 | |
| 1200 | dbg->dbg_out = debugfs_create_file("out", 0200, dbg->dbg_root, |
| 1201 | dev, &dfops); |
| 1202 | if (!dbg->dbg_out) |
| 1203 | goto err_dbg; |
| 1204 | |
| 1205 | dbg->dbg_outlen = debugfs_create_file("out_len", 0600, dbg->dbg_root, |
| 1206 | dev, &olfops); |
| 1207 | if (!dbg->dbg_outlen) |
| 1208 | goto err_dbg; |
| 1209 | |
| 1210 | dbg->dbg_status = debugfs_create_u8("status", 0600, dbg->dbg_root, |
| 1211 | &dbg->status); |
| 1212 | if (!dbg->dbg_status) |
| 1213 | goto err_dbg; |
| 1214 | |
| 1215 | dbg->dbg_run = debugfs_create_file("run", 0200, dbg->dbg_root, dev, &fops); |
| 1216 | if (!dbg->dbg_run) |
| 1217 | goto err_dbg; |
| 1218 | |
| 1219 | mlx5_cmdif_debugfs_init(dev); |
| 1220 | |
| 1221 | return 0; |
| 1222 | |
| 1223 | err_dbg: |
| 1224 | clean_debug_files(dev); |
| 1225 | return err; |
| 1226 | } |
| 1227 | |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 1228 | static void mlx5_cmd_change_mod(struct mlx5_core_dev *dev, int mode) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1229 | { |
| 1230 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1231 | int i; |
| 1232 | |
| 1233 | for (i = 0; i < cmd->max_reg_cmds; i++) |
| 1234 | down(&cmd->sem); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1235 | down(&cmd->pages_sem); |
| 1236 | |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 1237 | cmd->mode = mode; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1238 | |
| 1239 | up(&cmd->pages_sem); |
| 1240 | for (i = 0; i < cmd->max_reg_cmds; i++) |
| 1241 | up(&cmd->sem); |
| 1242 | } |
| 1243 | |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 1244 | void mlx5_cmd_use_events(struct mlx5_core_dev *dev) |
| 1245 | { |
| 1246 | mlx5_cmd_change_mod(dev, CMD_MODE_EVENTS); |
| 1247 | } |
| 1248 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1249 | void mlx5_cmd_use_polling(struct mlx5_core_dev *dev) |
| 1250 | { |
Mohamad Haj Yahia | 9cba4eb | 2016-06-30 17:34:42 +0300 | [diff] [blame] | 1251 | mlx5_cmd_change_mod(dev, CMD_MODE_POLLING); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1252 | } |
| 1253 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1254 | static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg) |
| 1255 | { |
| 1256 | unsigned long flags; |
| 1257 | |
| 1258 | if (msg->cache) { |
| 1259 | spin_lock_irqsave(&msg->cache->lock, flags); |
| 1260 | list_add_tail(&msg->list, &msg->cache->head); |
| 1261 | spin_unlock_irqrestore(&msg->cache->lock, flags); |
| 1262 | } else { |
| 1263 | mlx5_free_cmd_msg(dev, msg); |
| 1264 | } |
| 1265 | } |
| 1266 | |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 1267 | void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1268 | { |
| 1269 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1270 | struct mlx5_cmd_work_ent *ent; |
| 1271 | mlx5_cmd_cbk_t callback; |
| 1272 | void *context; |
| 1273 | int err; |
| 1274 | int i; |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1275 | s64 ds; |
| 1276 | struct mlx5_cmd_stats *stats; |
| 1277 | unsigned long flags; |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 1278 | unsigned long vector; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1279 | |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 1280 | /* there can be at most 32 command queues */ |
| 1281 | vector = vec & 0xffffffff; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1282 | for (i = 0; i < (1 << cmd->log_sz); i++) { |
| 1283 | if (test_bit(i, &vector)) { |
Dan Carpenter | 11940c8 | 2013-07-22 11:02:01 +0300 | [diff] [blame] | 1284 | struct semaphore *sem; |
| 1285 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1286 | ent = cmd->ent_arr[i]; |
Mohamad Haj Yahia | 65ee670 | 2016-06-30 17:34:43 +0300 | [diff] [blame] | 1287 | if (ent->callback) |
| 1288 | cancel_delayed_work(&ent->cb_timeout_work); |
Dan Carpenter | 11940c8 | 2013-07-22 11:02:01 +0300 | [diff] [blame] | 1289 | if (ent->page_queue) |
| 1290 | sem = &cmd->pages_sem; |
| 1291 | else |
| 1292 | sem = &cmd->sem; |
Thomas Gleixner | 14a7004 | 2014-07-16 21:04:44 +0000 | [diff] [blame] | 1293 | ent->ts2 = ktime_get_ns(); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1294 | memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out)); |
| 1295 | dump_command(dev, ent, 0); |
| 1296 | if (!ent->ret) { |
| 1297 | if (!cmd->checksum_disabled) |
| 1298 | ent->ret = verify_signature(ent); |
| 1299 | else |
| 1300 | ent->ret = 0; |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 1301 | if (vec & MLX5_TRIGGERED_CMD_COMP) |
| 1302 | ent->status = MLX5_DRIVER_STATUS_ABORTED; |
| 1303 | else |
| 1304 | ent->status = ent->lay->status_own >> 1; |
| 1305 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1306 | mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n", |
| 1307 | ent->ret, deliv_status_to_str(ent->status), ent->status); |
| 1308 | } |
| 1309 | free_ent(cmd, ent->idx); |
Eli Cohen | 020446e | 2015-10-08 17:13:58 +0300 | [diff] [blame] | 1310 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1311 | if (ent->callback) { |
Thomas Gleixner | 14a7004 | 2014-07-16 21:04:44 +0000 | [diff] [blame] | 1312 | ds = ent->ts2 - ent->ts1; |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1313 | if (ent->op < ARRAY_SIZE(cmd->stats)) { |
| 1314 | stats = &cmd->stats[ent->op]; |
| 1315 | spin_lock_irqsave(&stats->lock, flags); |
| 1316 | stats->sum += ds; |
| 1317 | ++stats->n; |
| 1318 | spin_unlock_irqrestore(&stats->lock, flags); |
| 1319 | } |
| 1320 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1321 | callback = ent->callback; |
| 1322 | context = ent->context; |
| 1323 | err = ent->ret; |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1324 | if (!err) |
| 1325 | err = mlx5_copy_from_msg(ent->uout, |
| 1326 | ent->out, |
| 1327 | ent->uout_size); |
| 1328 | |
| 1329 | mlx5_free_cmd_msg(dev, ent->out); |
| 1330 | free_msg(dev, ent->in); |
| 1331 | |
Eli Cohen | be87544 | 2015-09-25 10:49:12 +0300 | [diff] [blame] | 1332 | err = err ? err : ent->status; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1333 | free_cmd(ent); |
| 1334 | callback(err, context); |
| 1335 | } else { |
| 1336 | complete(&ent->done); |
| 1337 | } |
Dan Carpenter | 11940c8 | 2013-07-22 11:02:01 +0300 | [diff] [blame] | 1338 | up(sem); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1339 | } |
| 1340 | } |
| 1341 | } |
| 1342 | EXPORT_SYMBOL(mlx5_cmd_comp_handler); |
| 1343 | |
| 1344 | static int status_to_err(u8 status) |
| 1345 | { |
| 1346 | return status ? -1 : 0; /* TBD more meaningful codes */ |
| 1347 | } |
| 1348 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1349 | static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size, |
| 1350 | gfp_t gfp) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1351 | { |
| 1352 | struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM); |
| 1353 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1354 | struct cache_ent *ent = NULL; |
| 1355 | |
| 1356 | if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE) |
| 1357 | ent = &cmd->cache.large; |
| 1358 | else if (in_size > 16 && in_size <= MED_LIST_SIZE) |
| 1359 | ent = &cmd->cache.med; |
| 1360 | |
| 1361 | if (ent) { |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1362 | spin_lock_irq(&ent->lock); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1363 | if (!list_empty(&ent->head)) { |
| 1364 | msg = list_entry(ent->head.next, typeof(*msg), list); |
| 1365 | /* For cached lists, we must explicitly state what is |
| 1366 | * the real size |
| 1367 | */ |
| 1368 | msg->len = in_size; |
| 1369 | list_del(&msg->list); |
| 1370 | } |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1371 | spin_unlock_irq(&ent->lock); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | if (IS_ERR(msg)) |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1375 | msg = mlx5_alloc_cmd_msg(dev, gfp, in_size, 0); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1376 | |
| 1377 | return msg; |
| 1378 | } |
| 1379 | |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 1380 | static u16 opcode_from_in(struct mlx5_inbox_hdr *in) |
| 1381 | { |
| 1382 | return be16_to_cpu(in->opcode); |
| 1383 | } |
| 1384 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1385 | static int is_manage_pages(struct mlx5_inbox_hdr *in) |
| 1386 | { |
| 1387 | return be16_to_cpu(in->opcode) == MLX5_CMD_OP_MANAGE_PAGES; |
| 1388 | } |
| 1389 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1390 | static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, |
| 1391 | int out_size, mlx5_cmd_cbk_t callback, void *context) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1392 | { |
| 1393 | struct mlx5_cmd_msg *inb; |
| 1394 | struct mlx5_cmd_msg *outb; |
| 1395 | int pages_queue; |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1396 | gfp_t gfp; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1397 | int err; |
| 1398 | u8 status = 0; |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 1399 | u32 drv_synd; |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1400 | u8 token; |
Majd Dibbiny | 89d44f0 | 2015-10-14 17:43:46 +0300 | [diff] [blame] | 1401 | |
| 1402 | if (pci_channel_offline(dev->pdev) || |
| 1403 | dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) { |
| 1404 | err = mlx5_internal_err_ret_value(dev, opcode_from_in(in), &drv_synd, &status); |
| 1405 | *get_synd_ptr(out) = cpu_to_be32(drv_synd); |
| 1406 | *get_status_ptr(out) = status; |
| 1407 | return err; |
| 1408 | } |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1409 | |
| 1410 | pages_queue = is_manage_pages(in); |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1411 | gfp = callback ? GFP_ATOMIC : GFP_KERNEL; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1412 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1413 | inb = alloc_msg(dev, in_size, gfp); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1414 | if (IS_ERR(inb)) { |
| 1415 | err = PTR_ERR(inb); |
| 1416 | return err; |
| 1417 | } |
| 1418 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1419 | token = alloc_token(&dev->cmd); |
| 1420 | |
| 1421 | err = mlx5_copy_to_msg(inb, in, in_size, token); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1422 | if (err) { |
| 1423 | mlx5_core_warn(dev, "err %d\n", err); |
| 1424 | goto out_in; |
| 1425 | } |
| 1426 | |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1427 | outb = mlx5_alloc_cmd_msg(dev, gfp, out_size, token); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1428 | if (IS_ERR(outb)) { |
| 1429 | err = PTR_ERR(outb); |
| 1430 | goto out_in; |
| 1431 | } |
| 1432 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1433 | err = mlx5_cmd_invoke(dev, inb, outb, out, out_size, callback, context, |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1434 | pages_queue, &status, token); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1435 | if (err) |
| 1436 | goto out_out; |
| 1437 | |
| 1438 | mlx5_core_dbg(dev, "err %d, status %d\n", err, status); |
| 1439 | if (status) { |
| 1440 | err = status_to_err(status); |
| 1441 | goto out_out; |
| 1442 | } |
| 1443 | |
Eli Cohen | 05e4ecd | 2015-04-02 17:07:26 +0300 | [diff] [blame] | 1444 | if (!callback) |
| 1445 | err = mlx5_copy_from_msg(out, outb, out_size); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1446 | |
| 1447 | out_out: |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1448 | if (!callback) |
| 1449 | mlx5_free_cmd_msg(dev, outb); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1450 | |
| 1451 | out_in: |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1452 | if (!callback) |
| 1453 | free_msg(dev, inb); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1454 | return err; |
| 1455 | } |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1456 | |
| 1457 | int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, |
| 1458 | int out_size) |
| 1459 | { |
| 1460 | return cmd_exec(dev, in, in_size, out, out_size, NULL, NULL); |
| 1461 | } |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1462 | EXPORT_SYMBOL(mlx5_cmd_exec); |
| 1463 | |
Eli Cohen | 746b558 | 2013-10-23 09:53:14 +0300 | [diff] [blame] | 1464 | int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size, |
| 1465 | void *out, int out_size, mlx5_cmd_cbk_t callback, |
| 1466 | void *context) |
| 1467 | { |
| 1468 | return cmd_exec(dev, in, in_size, out, out_size, callback, context); |
| 1469 | } |
| 1470 | EXPORT_SYMBOL(mlx5_cmd_exec_cb); |
| 1471 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1472 | static void destroy_msg_cache(struct mlx5_core_dev *dev) |
| 1473 | { |
| 1474 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1475 | struct mlx5_cmd_msg *msg; |
| 1476 | struct mlx5_cmd_msg *n; |
| 1477 | |
| 1478 | list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) { |
| 1479 | list_del(&msg->list); |
| 1480 | mlx5_free_cmd_msg(dev, msg); |
| 1481 | } |
| 1482 | |
| 1483 | list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) { |
| 1484 | list_del(&msg->list); |
| 1485 | mlx5_free_cmd_msg(dev, msg); |
| 1486 | } |
| 1487 | } |
| 1488 | |
| 1489 | static int create_msg_cache(struct mlx5_core_dev *dev) |
| 1490 | { |
| 1491 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1492 | struct mlx5_cmd_msg *msg; |
| 1493 | int err; |
| 1494 | int i; |
| 1495 | |
| 1496 | spin_lock_init(&cmd->cache.large.lock); |
| 1497 | INIT_LIST_HEAD(&cmd->cache.large.head); |
| 1498 | spin_lock_init(&cmd->cache.med.lock); |
| 1499 | INIT_LIST_HEAD(&cmd->cache.med.head); |
| 1500 | |
| 1501 | for (i = 0; i < NUM_LONG_LISTS; i++) { |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1502 | msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE, 0); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1503 | if (IS_ERR(msg)) { |
| 1504 | err = PTR_ERR(msg); |
| 1505 | goto ex_err; |
| 1506 | } |
| 1507 | msg->cache = &cmd->cache.large; |
| 1508 | list_add_tail(&msg->list, &cmd->cache.large.head); |
| 1509 | } |
| 1510 | |
| 1511 | for (i = 0; i < NUM_MED_LISTS; i++) { |
Paul Blakey | 2c0f8ce | 2016-08-18 21:09:05 +0300 | [diff] [blame] | 1512 | msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE, 0); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1513 | if (IS_ERR(msg)) { |
| 1514 | err = PTR_ERR(msg); |
| 1515 | goto ex_err; |
| 1516 | } |
| 1517 | msg->cache = &cmd->cache.med; |
| 1518 | list_add_tail(&msg->list, &cmd->cache.med.head); |
| 1519 | } |
| 1520 | |
| 1521 | return 0; |
| 1522 | |
| 1523 | ex_err: |
| 1524 | destroy_msg_cache(dev); |
| 1525 | return err; |
| 1526 | } |
| 1527 | |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1528 | static int alloc_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) |
| 1529 | { |
| 1530 | struct device *ddev = &dev->pdev->dev; |
| 1531 | |
| 1532 | cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, |
| 1533 | &cmd->alloc_dma, GFP_KERNEL); |
| 1534 | if (!cmd->cmd_alloc_buf) |
| 1535 | return -ENOMEM; |
| 1536 | |
| 1537 | /* make sure it is aligned to 4K */ |
| 1538 | if (!((uintptr_t)cmd->cmd_alloc_buf & (MLX5_ADAPTER_PAGE_SIZE - 1))) { |
| 1539 | cmd->cmd_buf = cmd->cmd_alloc_buf; |
| 1540 | cmd->dma = cmd->alloc_dma; |
| 1541 | cmd->alloc_size = MLX5_ADAPTER_PAGE_SIZE; |
| 1542 | return 0; |
| 1543 | } |
| 1544 | |
| 1545 | dma_free_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, cmd->cmd_alloc_buf, |
| 1546 | cmd->alloc_dma); |
| 1547 | cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, |
| 1548 | 2 * MLX5_ADAPTER_PAGE_SIZE - 1, |
| 1549 | &cmd->alloc_dma, GFP_KERNEL); |
| 1550 | if (!cmd->cmd_alloc_buf) |
| 1551 | return -ENOMEM; |
| 1552 | |
| 1553 | cmd->cmd_buf = PTR_ALIGN(cmd->cmd_alloc_buf, MLX5_ADAPTER_PAGE_SIZE); |
| 1554 | cmd->dma = ALIGN(cmd->alloc_dma, MLX5_ADAPTER_PAGE_SIZE); |
| 1555 | cmd->alloc_size = 2 * MLX5_ADAPTER_PAGE_SIZE - 1; |
| 1556 | return 0; |
| 1557 | } |
| 1558 | |
| 1559 | static void free_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd) |
| 1560 | { |
| 1561 | struct device *ddev = &dev->pdev->dev; |
| 1562 | |
| 1563 | dma_free_coherent(ddev, cmd->alloc_size, cmd->cmd_alloc_buf, |
| 1564 | cmd->alloc_dma); |
| 1565 | } |
| 1566 | |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1567 | int mlx5_cmd_init(struct mlx5_core_dev *dev) |
| 1568 | { |
| 1569 | int size = sizeof(struct mlx5_cmd_prot_block); |
| 1570 | int align = roundup_pow_of_two(size); |
| 1571 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1572 | u32 cmd_h, cmd_l; |
| 1573 | u16 cmd_if_rev; |
| 1574 | int err; |
| 1575 | int i; |
| 1576 | |
Majd Dibbiny | a31208b | 2015-09-25 10:49:14 +0300 | [diff] [blame] | 1577 | memset(cmd, 0, sizeof(*cmd)); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1578 | cmd_if_rev = cmdif_rev(dev); |
| 1579 | if (cmd_if_rev != CMD_IF_REV) { |
| 1580 | dev_err(&dev->pdev->dev, |
| 1581 | "Driver cmdif rev(%d) differs from firmware's(%d)\n", |
| 1582 | CMD_IF_REV, cmd_if_rev); |
| 1583 | return -EINVAL; |
| 1584 | } |
| 1585 | |
| 1586 | cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0); |
| 1587 | if (!cmd->pool) |
| 1588 | return -ENOMEM; |
| 1589 | |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1590 | err = alloc_cmd_page(dev, cmd); |
| 1591 | if (err) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1592 | goto err_free_pool; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1593 | |
| 1594 | cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff; |
| 1595 | cmd->log_sz = cmd_l >> 4 & 0xf; |
| 1596 | cmd->log_stride = cmd_l & 0xf; |
| 1597 | if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) { |
| 1598 | dev_err(&dev->pdev->dev, "firmware reports too many outstanding commands %d\n", |
| 1599 | 1 << cmd->log_sz); |
| 1600 | err = -EINVAL; |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1601 | goto err_free_page; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1602 | } |
| 1603 | |
Eli Cohen | 2d446d1 | 2014-12-02 12:26:13 +0200 | [diff] [blame] | 1604 | if (cmd->log_sz + cmd->log_stride > MLX5_ADAPTER_PAGE_SHIFT) { |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1605 | dev_err(&dev->pdev->dev, "command queue size overflow\n"); |
| 1606 | err = -EINVAL; |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1607 | goto err_free_page; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1608 | } |
| 1609 | |
Eli Cohen | c1868b8 | 2013-09-11 16:35:25 +0300 | [diff] [blame] | 1610 | cmd->checksum_disabled = 1; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1611 | cmd->max_reg_cmds = (1 << cmd->log_sz) - 1; |
| 1612 | cmd->bitmask = (1 << cmd->max_reg_cmds) - 1; |
| 1613 | |
| 1614 | cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16; |
| 1615 | if (cmd->cmdif_rev > CMD_IF_REV) { |
| 1616 | dev_err(&dev->pdev->dev, "driver does not support command interface version. driver %d, firmware %d\n", |
| 1617 | CMD_IF_REV, cmd->cmdif_rev); |
| 1618 | err = -ENOTSUPP; |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1619 | goto err_free_page; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1620 | } |
| 1621 | |
| 1622 | spin_lock_init(&cmd->alloc_lock); |
| 1623 | spin_lock_init(&cmd->token_lock); |
| 1624 | for (i = 0; i < ARRAY_SIZE(cmd->stats); i++) |
| 1625 | spin_lock_init(&cmd->stats[i].lock); |
| 1626 | |
| 1627 | sema_init(&cmd->sem, cmd->max_reg_cmds); |
| 1628 | sema_init(&cmd->pages_sem, 1); |
| 1629 | |
| 1630 | cmd_h = (u32)((u64)(cmd->dma) >> 32); |
| 1631 | cmd_l = (u32)(cmd->dma); |
| 1632 | if (cmd_l & 0xfff) { |
| 1633 | dev_err(&dev->pdev->dev, "invalid command queue address\n"); |
| 1634 | err = -ENOMEM; |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1635 | goto err_free_page; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1636 | } |
| 1637 | |
| 1638 | iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h); |
| 1639 | iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz); |
| 1640 | |
| 1641 | /* Make sure firmware sees the complete address before we proceed */ |
| 1642 | wmb(); |
| 1643 | |
| 1644 | mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma)); |
| 1645 | |
| 1646 | cmd->mode = CMD_MODE_POLLING; |
| 1647 | |
| 1648 | err = create_msg_cache(dev); |
| 1649 | if (err) { |
| 1650 | dev_err(&dev->pdev->dev, "failed to create command cache\n"); |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1651 | goto err_free_page; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1652 | } |
| 1653 | |
| 1654 | set_wqname(dev); |
| 1655 | cmd->wq = create_singlethread_workqueue(cmd->wq_name); |
| 1656 | if (!cmd->wq) { |
| 1657 | dev_err(&dev->pdev->dev, "failed to create command workqueue\n"); |
| 1658 | err = -ENOMEM; |
| 1659 | goto err_cache; |
| 1660 | } |
| 1661 | |
| 1662 | err = create_debugfs_files(dev); |
| 1663 | if (err) { |
| 1664 | err = -ENOMEM; |
| 1665 | goto err_wq; |
| 1666 | } |
| 1667 | |
| 1668 | return 0; |
| 1669 | |
| 1670 | err_wq: |
| 1671 | destroy_workqueue(cmd->wq); |
| 1672 | |
| 1673 | err_cache: |
| 1674 | destroy_msg_cache(dev); |
| 1675 | |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1676 | err_free_page: |
| 1677 | free_cmd_page(dev, cmd); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1678 | |
| 1679 | err_free_pool: |
| 1680 | pci_pool_destroy(cmd->pool); |
| 1681 | |
| 1682 | return err; |
| 1683 | } |
| 1684 | EXPORT_SYMBOL(mlx5_cmd_init); |
| 1685 | |
| 1686 | void mlx5_cmd_cleanup(struct mlx5_core_dev *dev) |
| 1687 | { |
| 1688 | struct mlx5_cmd *cmd = &dev->cmd; |
| 1689 | |
| 1690 | clean_debug_files(dev); |
| 1691 | destroy_workqueue(cmd->wq); |
| 1692 | destroy_msg_cache(dev); |
Eli Cohen | 64599cc | 2015-04-02 17:07:25 +0300 | [diff] [blame] | 1693 | free_cmd_page(dev, cmd); |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1694 | pci_pool_destroy(cmd->pool); |
| 1695 | } |
| 1696 | EXPORT_SYMBOL(mlx5_cmd_cleanup); |
| 1697 | |
| 1698 | static const char *cmd_status_str(u8 status) |
| 1699 | { |
| 1700 | switch (status) { |
| 1701 | case MLX5_CMD_STAT_OK: |
| 1702 | return "OK"; |
| 1703 | case MLX5_CMD_STAT_INT_ERR: |
| 1704 | return "internal error"; |
| 1705 | case MLX5_CMD_STAT_BAD_OP_ERR: |
| 1706 | return "bad operation"; |
| 1707 | case MLX5_CMD_STAT_BAD_PARAM_ERR: |
| 1708 | return "bad parameter"; |
| 1709 | case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: |
| 1710 | return "bad system state"; |
| 1711 | case MLX5_CMD_STAT_BAD_RES_ERR: |
| 1712 | return "bad resource"; |
| 1713 | case MLX5_CMD_STAT_RES_BUSY: |
| 1714 | return "resource busy"; |
| 1715 | case MLX5_CMD_STAT_LIM_ERR: |
| 1716 | return "limits exceeded"; |
| 1717 | case MLX5_CMD_STAT_BAD_RES_STATE_ERR: |
| 1718 | return "bad resource state"; |
| 1719 | case MLX5_CMD_STAT_IX_ERR: |
| 1720 | return "bad index"; |
| 1721 | case MLX5_CMD_STAT_NO_RES_ERR: |
| 1722 | return "no resources"; |
| 1723 | case MLX5_CMD_STAT_BAD_INP_LEN_ERR: |
| 1724 | return "bad input length"; |
| 1725 | case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: |
| 1726 | return "bad output length"; |
| 1727 | case MLX5_CMD_STAT_BAD_QP_STATE_ERR: |
| 1728 | return "bad QP state"; |
| 1729 | case MLX5_CMD_STAT_BAD_PKT_ERR: |
| 1730 | return "bad packet (discarded)"; |
| 1731 | case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: |
| 1732 | return "bad size too many outstanding CQEs"; |
| 1733 | default: |
| 1734 | return "unknown status"; |
| 1735 | } |
| 1736 | } |
| 1737 | |
Eli Cohen | c7a08ac | 2014-10-02 12:19:42 +0300 | [diff] [blame] | 1738 | static int cmd_status_to_err(u8 status) |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1739 | { |
Eli Cohen | c7a08ac | 2014-10-02 12:19:42 +0300 | [diff] [blame] | 1740 | switch (status) { |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1741 | case MLX5_CMD_STAT_OK: return 0; |
| 1742 | case MLX5_CMD_STAT_INT_ERR: return -EIO; |
| 1743 | case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL; |
| 1744 | case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL; |
| 1745 | case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO; |
| 1746 | case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL; |
| 1747 | case MLX5_CMD_STAT_RES_BUSY: return -EBUSY; |
Eli Cohen | 9c86513 | 2013-09-11 16:35:33 +0300 | [diff] [blame] | 1748 | case MLX5_CMD_STAT_LIM_ERR: return -ENOMEM; |
Eli Cohen | e126ba9 | 2013-07-07 17:25:49 +0300 | [diff] [blame] | 1749 | case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL; |
| 1750 | case MLX5_CMD_STAT_IX_ERR: return -EINVAL; |
| 1751 | case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN; |
| 1752 | case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO; |
| 1753 | case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO; |
| 1754 | case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL; |
| 1755 | case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL; |
| 1756 | case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL; |
| 1757 | default: return -EIO; |
| 1758 | } |
| 1759 | } |
Eli Cohen | c7a08ac | 2014-10-02 12:19:42 +0300 | [diff] [blame] | 1760 | |
| 1761 | /* this will be available till all the commands use set/get macros */ |
| 1762 | int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr) |
| 1763 | { |
| 1764 | if (!hdr->status) |
| 1765 | return 0; |
| 1766 | |
| 1767 | pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n", |
| 1768 | cmd_status_str(hdr->status), hdr->status, |
| 1769 | be32_to_cpu(hdr->syndrome)); |
| 1770 | |
| 1771 | return cmd_status_to_err(hdr->status); |
| 1772 | } |
Eli Cohen | b775516 | 2014-10-02 12:19:44 +0300 | [diff] [blame] | 1773 | |
| 1774 | int mlx5_cmd_status_to_err_v2(void *ptr) |
| 1775 | { |
| 1776 | u32 syndrome; |
| 1777 | u8 status; |
| 1778 | |
| 1779 | status = be32_to_cpu(*(__be32 *)ptr) >> 24; |
| 1780 | if (!status) |
| 1781 | return 0; |
| 1782 | |
| 1783 | syndrome = be32_to_cpu(*(__be32 *)(ptr + 4)); |
| 1784 | |
| 1785 | pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n", |
| 1786 | cmd_status_str(status), status, syndrome); |
| 1787 | |
| 1788 | return cmd_status_to_err(status); |
| 1789 | } |