Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1 | /* |
Jack Morgenstein | 51a379d | 2008-07-25 10:32:52 -0700 | [diff] [blame] | 2 | * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 3 | * Copyright (c) 2005, 2006, 2007 Cisco Systems, Inc. All rights reserved. |
| 4 | * |
| 5 | * This software is available to you under a choice of one of two |
| 6 | * licenses. You may choose to be licensed under the terms of the GNU |
| 7 | * General Public License (GPL) Version 2, available from the file |
| 8 | * COPYING in the main directory of this source tree, or the |
| 9 | * OpenIB.org BSD license below: |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or |
| 12 | * without modification, are permitted provided that the following |
| 13 | * conditions are met: |
| 14 | * |
| 15 | * - Redistributions of source code must retain the above |
| 16 | * copyright notice, this list of conditions and the following |
| 17 | * disclaimer. |
| 18 | * |
| 19 | * - Redistributions in binary form must reproduce the above |
| 20 | * copyright notice, this list of conditions and the following |
| 21 | * disclaimer in the documentation and/or other materials |
| 22 | * provided with the distribution. |
| 23 | * |
| 24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 31 | * SOFTWARE. |
| 32 | */ |
| 33 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 34 | #include <linux/init.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 35 | #include <linux/interrupt.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 36 | #include <linux/slab.h> |
Paul Gortmaker | ee40fa0 | 2011-05-27 16:14:23 -0400 | [diff] [blame] | 37 | #include <linux/export.h> |
Andrea Righi | 27ac792 | 2008-07-23 21:28:13 -0700 | [diff] [blame] | 38 | #include <linux/mm.h> |
Al Viro | 9cbe05c | 2007-05-15 20:36:30 +0100 | [diff] [blame] | 39 | #include <linux/dma-mapping.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 40 | |
| 41 | #include <linux/mlx4/cmd.h> |
Amir Vadai | d9236c3 | 2012-07-18 22:33:51 +0000 | [diff] [blame] | 42 | #include <linux/cpu_rmap.h> |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 43 | |
| 44 | #include "mlx4.h" |
| 45 | #include "fw.h" |
| 46 | |
| 47 | enum { |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 48 | MLX4_IRQNAME_SIZE = 32 |
Arputham Benjamin | f5f5951 | 2009-09-05 20:24:50 -0700 | [diff] [blame] | 49 | }; |
| 50 | |
| 51 | enum { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 52 | MLX4_NUM_ASYNC_EQE = 0x100, |
| 53 | MLX4_NUM_SPARE_EQE = 0x80, |
| 54 | MLX4_EQ_ENTRY_SIZE = 0x20 |
| 55 | }; |
| 56 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 57 | #define MLX4_EQ_STATUS_OK ( 0 << 28) |
| 58 | #define MLX4_EQ_STATUS_WRITE_FAIL (10 << 28) |
| 59 | #define MLX4_EQ_OWNER_SW ( 0 << 24) |
| 60 | #define MLX4_EQ_OWNER_HW ( 1 << 24) |
| 61 | #define MLX4_EQ_FLAG_EC ( 1 << 18) |
| 62 | #define MLX4_EQ_FLAG_OI ( 1 << 17) |
| 63 | #define MLX4_EQ_STATE_ARMED ( 9 << 8) |
| 64 | #define MLX4_EQ_STATE_FIRED (10 << 8) |
| 65 | #define MLX4_EQ_STATE_ALWAYS_ARMED (11 << 8) |
| 66 | |
| 67 | #define MLX4_ASYNC_EVENT_MASK ((1ull << MLX4_EVENT_TYPE_PATH_MIG) | \ |
| 68 | (1ull << MLX4_EVENT_TYPE_COMM_EST) | \ |
| 69 | (1ull << MLX4_EVENT_TYPE_SQ_DRAINED) | \ |
| 70 | (1ull << MLX4_EVENT_TYPE_CQ_ERROR) | \ |
| 71 | (1ull << MLX4_EVENT_TYPE_WQ_CATAS_ERROR) | \ |
| 72 | (1ull << MLX4_EVENT_TYPE_EEC_CATAS_ERROR) | \ |
| 73 | (1ull << MLX4_EVENT_TYPE_PATH_MIG_FAILED) | \ |
| 74 | (1ull << MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR) | \ |
| 75 | (1ull << MLX4_EVENT_TYPE_WQ_ACCESS_ERROR) | \ |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 76 | (1ull << MLX4_EVENT_TYPE_PORT_CHANGE) | \ |
| 77 | (1ull << MLX4_EVENT_TYPE_ECC_DETECT) | \ |
| 78 | (1ull << MLX4_EVENT_TYPE_SRQ_CATAS_ERROR) | \ |
| 79 | (1ull << MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE) | \ |
| 80 | (1ull << MLX4_EVENT_TYPE_SRQ_LIMIT) | \ |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 81 | (1ull << MLX4_EVENT_TYPE_CMD) | \ |
| 82 | (1ull << MLX4_EVENT_TYPE_COMM_CHANNEL) | \ |
Jack Morgenstein | 5984be9 | 2012-03-06 15:50:49 +0200 | [diff] [blame] | 83 | (1ull << MLX4_EVENT_TYPE_FLR_EVENT) | \ |
| 84 | (1ull << MLX4_EVENT_TYPE_FATAL_WARNING)) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 85 | |
Jack Morgenstein | 00f5ce9 | 2012-06-19 11:21:40 +0300 | [diff] [blame] | 86 | static u64 get_async_ev_mask(struct mlx4_dev *dev) |
| 87 | { |
| 88 | u64 async_ev_mask = MLX4_ASYNC_EVENT_MASK; |
| 89 | if (dev->caps.flags & MLX4_DEV_CAP_FLAG_PORT_MNG_CHG_EV) |
| 90 | async_ev_mask |= (1ull << MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT); |
| 91 | |
| 92 | return async_ev_mask; |
| 93 | } |
| 94 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 95 | static void eq_set_ci(struct mlx4_eq *eq, int req_not) |
| 96 | { |
| 97 | __raw_writel((__force u32) cpu_to_be32((eq->cons_index & 0xffffff) | |
| 98 | req_not << 31), |
| 99 | eq->doorbell); |
| 100 | /* We still want ordering, just not swabbing, so add a barrier */ |
| 101 | mb(); |
| 102 | } |
| 103 | |
| 104 | static struct mlx4_eqe *get_eqe(struct mlx4_eq *eq, u32 entry) |
| 105 | { |
| 106 | unsigned long off = (entry & (eq->nent - 1)) * MLX4_EQ_ENTRY_SIZE; |
| 107 | return eq->page_list[off / PAGE_SIZE].buf + off % PAGE_SIZE; |
| 108 | } |
| 109 | |
| 110 | static struct mlx4_eqe *next_eqe_sw(struct mlx4_eq *eq) |
| 111 | { |
| 112 | struct mlx4_eqe *eqe = get_eqe(eq, eq->cons_index); |
| 113 | return !!(eqe->owner & 0x80) ^ !!(eq->cons_index & eq->nent) ? NULL : eqe; |
| 114 | } |
| 115 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 116 | static struct mlx4_eqe *next_slave_event_eqe(struct mlx4_slave_event_eq *slave_eq) |
| 117 | { |
| 118 | struct mlx4_eqe *eqe = |
| 119 | &slave_eq->event_eqe[slave_eq->cons & (SLAVE_EVENT_EQ_SIZE - 1)]; |
| 120 | return (!!(eqe->owner & 0x80) ^ |
| 121 | !!(slave_eq->cons & SLAVE_EVENT_EQ_SIZE)) ? |
| 122 | eqe : NULL; |
| 123 | } |
| 124 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 125 | void mlx4_gen_slave_eqe(struct work_struct *work) |
| 126 | { |
| 127 | struct mlx4_mfunc_master_ctx *master = |
| 128 | container_of(work, struct mlx4_mfunc_master_ctx, |
| 129 | slave_event_work); |
| 130 | struct mlx4_mfunc *mfunc = |
| 131 | container_of(master, struct mlx4_mfunc, master); |
| 132 | struct mlx4_priv *priv = container_of(mfunc, struct mlx4_priv, mfunc); |
| 133 | struct mlx4_dev *dev = &priv->dev; |
| 134 | struct mlx4_slave_event_eq *slave_eq = &mfunc->master.slave_eq; |
| 135 | struct mlx4_eqe *eqe; |
| 136 | u8 slave; |
| 137 | int i; |
| 138 | |
| 139 | for (eqe = next_slave_event_eqe(slave_eq); eqe; |
| 140 | eqe = next_slave_event_eqe(slave_eq)) { |
| 141 | slave = eqe->slave_id; |
| 142 | |
| 143 | /* All active slaves need to receive the event */ |
| 144 | if (slave == ALL_SLAVES) { |
| 145 | for (i = 0; i < dev->num_slaves; i++) { |
| 146 | if (i != dev->caps.function && |
| 147 | master->slave_state[i].active) |
| 148 | if (mlx4_GEN_EQE(dev, i, eqe)) |
| 149 | mlx4_warn(dev, "Failed to " |
| 150 | " generate event " |
| 151 | "for slave %d\n", i); |
| 152 | } |
| 153 | } else { |
| 154 | if (mlx4_GEN_EQE(dev, slave, eqe)) |
| 155 | mlx4_warn(dev, "Failed to generate event " |
| 156 | "for slave %d\n", slave); |
| 157 | } |
| 158 | ++slave_eq->cons; |
| 159 | } |
| 160 | } |
| 161 | |
| 162 | |
| 163 | static void slave_event(struct mlx4_dev *dev, u8 slave, struct mlx4_eqe *eqe) |
| 164 | { |
| 165 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 166 | struct mlx4_slave_event_eq *slave_eq = &priv->mfunc.master.slave_eq; |
Jack Morgenstein | 992e8e6e | 2012-08-03 08:40:54 +0000 | [diff] [blame] | 167 | struct mlx4_eqe *s_eqe; |
| 168 | unsigned long flags; |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 169 | |
Jack Morgenstein | 992e8e6e | 2012-08-03 08:40:54 +0000 | [diff] [blame] | 170 | spin_lock_irqsave(&slave_eq->event_lock, flags); |
| 171 | s_eqe = &slave_eq->event_eqe[slave_eq->prod & (SLAVE_EVENT_EQ_SIZE - 1)]; |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 172 | if ((!!(s_eqe->owner & 0x80)) ^ |
| 173 | (!!(slave_eq->prod & SLAVE_EVENT_EQ_SIZE))) { |
| 174 | mlx4_warn(dev, "Master failed to generate an EQE for slave: %d. " |
| 175 | "No free EQE on slave events queue\n", slave); |
Jack Morgenstein | 992e8e6e | 2012-08-03 08:40:54 +0000 | [diff] [blame] | 176 | spin_unlock_irqrestore(&slave_eq->event_lock, flags); |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 177 | return; |
| 178 | } |
| 179 | |
| 180 | memcpy(s_eqe, eqe, sizeof(struct mlx4_eqe) - 1); |
| 181 | s_eqe->slave_id = slave; |
| 182 | /* ensure all information is written before setting the ownersip bit */ |
| 183 | wmb(); |
| 184 | s_eqe->owner = !!(slave_eq->prod & SLAVE_EVENT_EQ_SIZE) ? 0x0 : 0x80; |
| 185 | ++slave_eq->prod; |
| 186 | |
| 187 | queue_work(priv->mfunc.master.comm_wq, |
| 188 | &priv->mfunc.master.slave_event_work); |
Jack Morgenstein | 992e8e6e | 2012-08-03 08:40:54 +0000 | [diff] [blame] | 189 | spin_unlock_irqrestore(&slave_eq->event_lock, flags); |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 190 | } |
| 191 | |
| 192 | static void mlx4_slave_event(struct mlx4_dev *dev, int slave, |
| 193 | struct mlx4_eqe *eqe) |
| 194 | { |
| 195 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 196 | struct mlx4_slave_state *s_slave = |
| 197 | &priv->mfunc.master.slave_state[slave]; |
| 198 | |
| 199 | if (!s_slave->active) { |
| 200 | /*mlx4_warn(dev, "Trying to pass event to inactive slave\n");*/ |
| 201 | return; |
| 202 | } |
| 203 | |
| 204 | slave_event(dev, slave, eqe); |
| 205 | } |
| 206 | |
Jack Morgenstein | 993c401 | 2012-08-03 08:40:48 +0000 | [diff] [blame] | 207 | int mlx4_gen_pkey_eqe(struct mlx4_dev *dev, int slave, u8 port) |
| 208 | { |
| 209 | struct mlx4_eqe eqe; |
| 210 | |
| 211 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 212 | struct mlx4_slave_state *s_slave = &priv->mfunc.master.slave_state[slave]; |
| 213 | |
| 214 | if (!s_slave->active) |
| 215 | return 0; |
| 216 | |
| 217 | memset(&eqe, 0, sizeof eqe); |
| 218 | |
| 219 | eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT; |
| 220 | eqe.subtype = MLX4_DEV_PMC_SUBTYPE_PKEY_TABLE; |
| 221 | eqe.event.port_mgmt_change.port = port; |
| 222 | |
| 223 | return mlx4_GEN_EQE(dev, slave, &eqe); |
| 224 | } |
| 225 | EXPORT_SYMBOL(mlx4_gen_pkey_eqe); |
| 226 | |
| 227 | int mlx4_gen_guid_change_eqe(struct mlx4_dev *dev, int slave, u8 port) |
| 228 | { |
| 229 | struct mlx4_eqe eqe; |
| 230 | |
| 231 | /*don't send if we don't have the that slave */ |
| 232 | if (dev->num_vfs < slave) |
| 233 | return 0; |
| 234 | memset(&eqe, 0, sizeof eqe); |
| 235 | |
| 236 | eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT; |
| 237 | eqe.subtype = MLX4_DEV_PMC_SUBTYPE_GUID_INFO; |
| 238 | eqe.event.port_mgmt_change.port = port; |
| 239 | |
| 240 | return mlx4_GEN_EQE(dev, slave, &eqe); |
| 241 | } |
| 242 | EXPORT_SYMBOL(mlx4_gen_guid_change_eqe); |
| 243 | |
| 244 | int mlx4_gen_port_state_change_eqe(struct mlx4_dev *dev, int slave, u8 port, |
| 245 | u8 port_subtype_change) |
| 246 | { |
| 247 | struct mlx4_eqe eqe; |
| 248 | |
| 249 | /*don't send if we don't have the that slave */ |
| 250 | if (dev->num_vfs < slave) |
| 251 | return 0; |
| 252 | memset(&eqe, 0, sizeof eqe); |
| 253 | |
| 254 | eqe.type = MLX4_EVENT_TYPE_PORT_CHANGE; |
| 255 | eqe.subtype = port_subtype_change; |
| 256 | eqe.event.port_change.port = cpu_to_be32(port << 28); |
| 257 | |
| 258 | mlx4_dbg(dev, "%s: sending: %d to slave: %d on port: %d\n", __func__, |
| 259 | port_subtype_change, slave, port); |
| 260 | return mlx4_GEN_EQE(dev, slave, &eqe); |
| 261 | } |
| 262 | EXPORT_SYMBOL(mlx4_gen_port_state_change_eqe); |
| 263 | |
| 264 | enum slave_port_state mlx4_get_slave_port_state(struct mlx4_dev *dev, int slave, u8 port) |
| 265 | { |
| 266 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 267 | struct mlx4_slave_state *s_state = priv->mfunc.master.slave_state; |
| 268 | if (slave >= dev->num_slaves || port > MLX4_MAX_PORTS) { |
| 269 | pr_err("%s: Error: asking for slave:%d, port:%d\n", |
| 270 | __func__, slave, port); |
| 271 | return SLAVE_PORT_DOWN; |
| 272 | } |
| 273 | return s_state[slave].port_state[port]; |
| 274 | } |
| 275 | EXPORT_SYMBOL(mlx4_get_slave_port_state); |
| 276 | |
| 277 | static int mlx4_set_slave_port_state(struct mlx4_dev *dev, int slave, u8 port, |
| 278 | enum slave_port_state state) |
| 279 | { |
| 280 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 281 | struct mlx4_slave_state *s_state = priv->mfunc.master.slave_state; |
| 282 | |
| 283 | if (slave >= dev->num_slaves || port > MLX4_MAX_PORTS || port == 0) { |
| 284 | pr_err("%s: Error: asking for slave:%d, port:%d\n", |
| 285 | __func__, slave, port); |
| 286 | return -1; |
| 287 | } |
| 288 | s_state[slave].port_state[port] = state; |
| 289 | |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | static void set_all_slave_state(struct mlx4_dev *dev, u8 port, int event) |
| 294 | { |
| 295 | int i; |
| 296 | enum slave_port_gen_event gen_event; |
| 297 | |
| 298 | for (i = 0; i < dev->num_slaves; i++) |
| 299 | set_and_calc_slave_port_state(dev, i, port, event, &gen_event); |
| 300 | } |
| 301 | /************************************************************************** |
| 302 | The function get as input the new event to that port, |
| 303 | and according to the prev state change the slave's port state. |
| 304 | The events are: |
| 305 | MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN, |
| 306 | MLX4_PORT_STATE_DEV_EVENT_PORT_UP |
| 307 | MLX4_PORT_STATE_IB_EVENT_GID_VALID |
| 308 | MLX4_PORT_STATE_IB_EVENT_GID_INVALID |
| 309 | ***************************************************************************/ |
| 310 | int set_and_calc_slave_port_state(struct mlx4_dev *dev, int slave, |
| 311 | u8 port, int event, |
| 312 | enum slave_port_gen_event *gen_event) |
| 313 | { |
| 314 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 315 | struct mlx4_slave_state *ctx = NULL; |
| 316 | unsigned long flags; |
| 317 | int ret = -1; |
| 318 | enum slave_port_state cur_state = |
| 319 | mlx4_get_slave_port_state(dev, slave, port); |
| 320 | |
| 321 | *gen_event = SLAVE_PORT_GEN_EVENT_NONE; |
| 322 | |
| 323 | if (slave >= dev->num_slaves || port > MLX4_MAX_PORTS || port == 0) { |
| 324 | pr_err("%s: Error: asking for slave:%d, port:%d\n", |
| 325 | __func__, slave, port); |
| 326 | return ret; |
| 327 | } |
| 328 | |
| 329 | ctx = &priv->mfunc.master.slave_state[slave]; |
| 330 | spin_lock_irqsave(&ctx->lock, flags); |
| 331 | |
| 332 | mlx4_dbg(dev, "%s: slave: %d, current state: %d new event :%d\n", |
| 333 | __func__, slave, cur_state, event); |
| 334 | |
| 335 | switch (cur_state) { |
| 336 | case SLAVE_PORT_DOWN: |
| 337 | if (MLX4_PORT_STATE_DEV_EVENT_PORT_UP == event) |
| 338 | mlx4_set_slave_port_state(dev, slave, port, |
| 339 | SLAVE_PENDING_UP); |
| 340 | break; |
| 341 | case SLAVE_PENDING_UP: |
| 342 | if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN == event) |
| 343 | mlx4_set_slave_port_state(dev, slave, port, |
| 344 | SLAVE_PORT_DOWN); |
| 345 | else if (MLX4_PORT_STATE_IB_PORT_STATE_EVENT_GID_VALID == event) { |
| 346 | mlx4_set_slave_port_state(dev, slave, port, |
| 347 | SLAVE_PORT_UP); |
| 348 | *gen_event = SLAVE_PORT_GEN_EVENT_UP; |
| 349 | } |
| 350 | break; |
| 351 | case SLAVE_PORT_UP: |
| 352 | if (MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN == event) { |
| 353 | mlx4_set_slave_port_state(dev, slave, port, |
| 354 | SLAVE_PORT_DOWN); |
| 355 | *gen_event = SLAVE_PORT_GEN_EVENT_DOWN; |
| 356 | } else if (MLX4_PORT_STATE_IB_EVENT_GID_INVALID == |
| 357 | event) { |
| 358 | mlx4_set_slave_port_state(dev, slave, port, |
| 359 | SLAVE_PENDING_UP); |
| 360 | *gen_event = SLAVE_PORT_GEN_EVENT_DOWN; |
| 361 | } |
| 362 | break; |
| 363 | default: |
| 364 | pr_err("%s: BUG!!! UNKNOWN state: " |
| 365 | "slave:%d, port:%d\n", __func__, slave, port); |
| 366 | goto out; |
| 367 | } |
| 368 | ret = mlx4_get_slave_port_state(dev, slave, port); |
| 369 | mlx4_dbg(dev, "%s: slave: %d, current state: %d new event" |
| 370 | " :%d gen_event: %d\n", |
| 371 | __func__, slave, cur_state, event, *gen_event); |
| 372 | |
| 373 | out: |
| 374 | spin_unlock_irqrestore(&ctx->lock, flags); |
| 375 | return ret; |
| 376 | } |
| 377 | |
| 378 | EXPORT_SYMBOL(set_and_calc_slave_port_state); |
| 379 | |
| 380 | int mlx4_gen_slaves_port_mgt_ev(struct mlx4_dev *dev, u8 port, int attr) |
| 381 | { |
| 382 | struct mlx4_eqe eqe; |
| 383 | |
| 384 | memset(&eqe, 0, sizeof eqe); |
| 385 | |
| 386 | eqe.type = MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT; |
| 387 | eqe.subtype = MLX4_DEV_PMC_SUBTYPE_PORT_INFO; |
| 388 | eqe.event.port_mgmt_change.port = port; |
| 389 | eqe.event.port_mgmt_change.params.port_info.changed_attr = |
| 390 | cpu_to_be32((u32) attr); |
| 391 | |
| 392 | slave_event(dev, ALL_SLAVES, &eqe); |
| 393 | return 0; |
| 394 | } |
| 395 | EXPORT_SYMBOL(mlx4_gen_slaves_port_mgt_ev); |
| 396 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 397 | void mlx4_master_handle_slave_flr(struct work_struct *work) |
| 398 | { |
| 399 | struct mlx4_mfunc_master_ctx *master = |
| 400 | container_of(work, struct mlx4_mfunc_master_ctx, |
| 401 | slave_flr_event_work); |
| 402 | struct mlx4_mfunc *mfunc = |
| 403 | container_of(master, struct mlx4_mfunc, master); |
| 404 | struct mlx4_priv *priv = |
| 405 | container_of(mfunc, struct mlx4_priv, mfunc); |
| 406 | struct mlx4_dev *dev = &priv->dev; |
| 407 | struct mlx4_slave_state *slave_state = priv->mfunc.master.slave_state; |
| 408 | int i; |
| 409 | int err; |
| 410 | |
| 411 | mlx4_dbg(dev, "mlx4_handle_slave_flr\n"); |
| 412 | |
| 413 | for (i = 0 ; i < dev->num_slaves; i++) { |
| 414 | |
| 415 | if (MLX4_COMM_CMD_FLR == slave_state[i].last_cmd) { |
| 416 | mlx4_dbg(dev, "mlx4_handle_slave_flr: " |
| 417 | "clean slave: %d\n", i); |
| 418 | |
| 419 | mlx4_delete_all_resources_for_slave(dev, i); |
| 420 | /*return the slave to running mode*/ |
| 421 | spin_lock(&priv->mfunc.master.slave_state_lock); |
| 422 | slave_state[i].last_cmd = MLX4_COMM_CMD_RESET; |
| 423 | slave_state[i].is_slave_going_down = 0; |
| 424 | spin_unlock(&priv->mfunc.master.slave_state_lock); |
| 425 | /*notify the FW:*/ |
| 426 | err = mlx4_cmd(dev, 0, i, 0, MLX4_CMD_INFORM_FLR_DONE, |
| 427 | MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
| 428 | if (err) |
| 429 | mlx4_warn(dev, "Failed to notify FW on " |
| 430 | "FLR done (slave:%d)\n", i); |
| 431 | } |
| 432 | } |
| 433 | } |
| 434 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 435 | static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq) |
| 436 | { |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 437 | struct mlx4_priv *priv = mlx4_priv(dev); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 438 | struct mlx4_eqe *eqe; |
| 439 | int cqn; |
| 440 | int eqes_found = 0; |
| 441 | int set_ci = 0; |
Yevgeny Petrilin | 27bf91d | 2009-03-18 19:45:11 -0700 | [diff] [blame] | 442 | int port; |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 443 | int slave = 0; |
| 444 | int ret; |
| 445 | u32 flr_slave; |
| 446 | u8 update_slave_state; |
| 447 | int i; |
Jack Morgenstein | 993c401 | 2012-08-03 08:40:48 +0000 | [diff] [blame] | 448 | enum slave_port_gen_event gen_event; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 449 | |
| 450 | while ((eqe = next_eqe_sw(eq))) { |
| 451 | /* |
| 452 | * Make sure we read EQ entry contents after we've |
| 453 | * checked the ownership bit. |
| 454 | */ |
| 455 | rmb(); |
| 456 | |
| 457 | switch (eqe->type) { |
| 458 | case MLX4_EVENT_TYPE_COMP: |
| 459 | cqn = be32_to_cpu(eqe->event.comp.cqn) & 0xffffff; |
| 460 | mlx4_cq_completion(dev, cqn); |
| 461 | break; |
| 462 | |
| 463 | case MLX4_EVENT_TYPE_PATH_MIG: |
| 464 | case MLX4_EVENT_TYPE_COMM_EST: |
| 465 | case MLX4_EVENT_TYPE_SQ_DRAINED: |
| 466 | case MLX4_EVENT_TYPE_SRQ_QP_LAST_WQE: |
| 467 | case MLX4_EVENT_TYPE_WQ_CATAS_ERROR: |
| 468 | case MLX4_EVENT_TYPE_PATH_MIG_FAILED: |
| 469 | case MLX4_EVENT_TYPE_WQ_INVAL_REQ_ERROR: |
| 470 | case MLX4_EVENT_TYPE_WQ_ACCESS_ERROR: |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 471 | mlx4_dbg(dev, "event %d arrived\n", eqe->type); |
| 472 | if (mlx4_is_master(dev)) { |
| 473 | /* forward only to slave owning the QP */ |
| 474 | ret = mlx4_get_slave_from_resource_id(dev, |
| 475 | RES_QP, |
| 476 | be32_to_cpu(eqe->event.qp.qpn) |
| 477 | & 0xffffff, &slave); |
| 478 | if (ret && ret != -ENOENT) { |
| 479 | mlx4_dbg(dev, "QP event %02x(%02x) on " |
| 480 | "EQ %d at index %u: could " |
| 481 | "not get slave id (%d)\n", |
| 482 | eqe->type, eqe->subtype, |
| 483 | eq->eqn, eq->cons_index, ret); |
| 484 | break; |
| 485 | } |
| 486 | |
| 487 | if (!ret && slave != dev->caps.function) { |
| 488 | mlx4_slave_event(dev, slave, eqe); |
| 489 | break; |
| 490 | } |
| 491 | |
| 492 | } |
| 493 | mlx4_qp_event(dev, be32_to_cpu(eqe->event.qp.qpn) & |
| 494 | 0xffffff, eqe->type); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 495 | break; |
| 496 | |
| 497 | case MLX4_EVENT_TYPE_SRQ_LIMIT: |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 498 | mlx4_warn(dev, "%s: MLX4_EVENT_TYPE_SRQ_LIMIT\n", |
| 499 | __func__); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 500 | case MLX4_EVENT_TYPE_SRQ_CATAS_ERROR: |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 501 | if (mlx4_is_master(dev)) { |
| 502 | /* forward only to slave owning the SRQ */ |
| 503 | ret = mlx4_get_slave_from_resource_id(dev, |
| 504 | RES_SRQ, |
| 505 | be32_to_cpu(eqe->event.srq.srqn) |
| 506 | & 0xffffff, |
| 507 | &slave); |
| 508 | if (ret && ret != -ENOENT) { |
| 509 | mlx4_warn(dev, "SRQ event %02x(%02x) " |
| 510 | "on EQ %d at index %u: could" |
| 511 | " not get slave id (%d)\n", |
| 512 | eqe->type, eqe->subtype, |
| 513 | eq->eqn, eq->cons_index, ret); |
| 514 | break; |
| 515 | } |
| 516 | mlx4_warn(dev, "%s: slave:%d, srq_no:0x%x," |
| 517 | " event: %02x(%02x)\n", __func__, |
| 518 | slave, |
| 519 | be32_to_cpu(eqe->event.srq.srqn), |
| 520 | eqe->type, eqe->subtype); |
| 521 | |
| 522 | if (!ret && slave != dev->caps.function) { |
| 523 | mlx4_warn(dev, "%s: sending event " |
| 524 | "%02x(%02x) to slave:%d\n", |
| 525 | __func__, eqe->type, |
| 526 | eqe->subtype, slave); |
| 527 | mlx4_slave_event(dev, slave, eqe); |
| 528 | break; |
| 529 | } |
| 530 | } |
| 531 | mlx4_srq_event(dev, be32_to_cpu(eqe->event.srq.srqn) & |
| 532 | 0xffffff, eqe->type); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 533 | break; |
| 534 | |
| 535 | case MLX4_EVENT_TYPE_CMD: |
| 536 | mlx4_cmd_event(dev, |
| 537 | be16_to_cpu(eqe->event.cmd.token), |
| 538 | eqe->event.cmd.status, |
| 539 | be64_to_cpu(eqe->event.cmd.out_param)); |
| 540 | break; |
| 541 | |
| 542 | case MLX4_EVENT_TYPE_PORT_CHANGE: |
Yevgeny Petrilin | 27bf91d | 2009-03-18 19:45:11 -0700 | [diff] [blame] | 543 | port = be32_to_cpu(eqe->event.port_change.port) >> 28; |
| 544 | if (eqe->subtype == MLX4_PORT_CHANGE_SUBTYPE_DOWN) { |
Jack Morgenstein | 993c401 | 2012-08-03 08:40:48 +0000 | [diff] [blame] | 545 | mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_DOWN, |
Yevgeny Petrilin | 27bf91d | 2009-03-18 19:45:11 -0700 | [diff] [blame] | 546 | port); |
| 547 | mlx4_priv(dev)->sense.do_sense_port[port] = 1; |
Jack Morgenstein | 993c401 | 2012-08-03 08:40:48 +0000 | [diff] [blame] | 548 | if (!mlx4_is_master(dev)) |
| 549 | break; |
| 550 | for (i = 0; i < dev->num_slaves; i++) { |
| 551 | if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) { |
| 552 | if (i == mlx4_master_func_num(dev)) |
| 553 | continue; |
| 554 | mlx4_dbg(dev, "%s: Sending MLX4_PORT_CHANGE_SUBTYPE_DOWN" |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 555 | " to slave: %d, port:%d\n", |
| 556 | __func__, i, port); |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 557 | mlx4_slave_event(dev, i, eqe); |
Jack Morgenstein | 993c401 | 2012-08-03 08:40:48 +0000 | [diff] [blame] | 558 | } else { /* IB port */ |
| 559 | set_and_calc_slave_port_state(dev, i, port, |
| 560 | MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN, |
| 561 | &gen_event); |
| 562 | /*we can be in pending state, then do not send port_down event*/ |
| 563 | if (SLAVE_PORT_GEN_EVENT_DOWN == gen_event) { |
| 564 | if (i == mlx4_master_func_num(dev)) |
| 565 | continue; |
| 566 | mlx4_slave_event(dev, i, eqe); |
| 567 | } |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 568 | } |
| 569 | } |
Jack Morgenstein | 993c401 | 2012-08-03 08:40:48 +0000 | [diff] [blame] | 570 | } else { |
| 571 | mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_UP, port); |
| 572 | |
| 573 | mlx4_priv(dev)->sense.do_sense_port[port] = 0; |
| 574 | |
| 575 | if (!mlx4_is_master(dev)) |
| 576 | break; |
| 577 | if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) |
| 578 | for (i = 0; i < dev->num_slaves; i++) { |
| 579 | if (i == mlx4_master_func_num(dev)) |
| 580 | continue; |
| 581 | mlx4_slave_event(dev, i, eqe); |
| 582 | } |
| 583 | else /* IB port */ |
| 584 | /* port-up event will be sent to a slave when the |
| 585 | * slave's alias-guid is set. This is done in alias_GUID.c |
| 586 | */ |
| 587 | set_all_slave_state(dev, port, MLX4_DEV_EVENT_PORT_UP); |
Yevgeny Petrilin | 27bf91d | 2009-03-18 19:45:11 -0700 | [diff] [blame] | 588 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 589 | break; |
| 590 | |
| 591 | case MLX4_EVENT_TYPE_CQ_ERROR: |
| 592 | mlx4_warn(dev, "CQ %s on CQN %06x\n", |
| 593 | eqe->event.cq_err.syndrome == 1 ? |
| 594 | "overrun" : "access violation", |
| 595 | be32_to_cpu(eqe->event.cq_err.cqn) & 0xffffff); |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 596 | if (mlx4_is_master(dev)) { |
| 597 | ret = mlx4_get_slave_from_resource_id(dev, |
| 598 | RES_CQ, |
| 599 | be32_to_cpu(eqe->event.cq_err.cqn) |
| 600 | & 0xffffff, &slave); |
| 601 | if (ret && ret != -ENOENT) { |
| 602 | mlx4_dbg(dev, "CQ event %02x(%02x) on " |
| 603 | "EQ %d at index %u: could " |
| 604 | "not get slave id (%d)\n", |
| 605 | eqe->type, eqe->subtype, |
| 606 | eq->eqn, eq->cons_index, ret); |
| 607 | break; |
| 608 | } |
| 609 | |
| 610 | if (!ret && slave != dev->caps.function) { |
| 611 | mlx4_slave_event(dev, slave, eqe); |
| 612 | break; |
| 613 | } |
| 614 | } |
| 615 | mlx4_cq_event(dev, |
| 616 | be32_to_cpu(eqe->event.cq_err.cqn) |
| 617 | & 0xffffff, |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 618 | eqe->type); |
| 619 | break; |
| 620 | |
| 621 | case MLX4_EVENT_TYPE_EQ_OVERFLOW: |
| 622 | mlx4_warn(dev, "EQ overrun on EQN %d\n", eq->eqn); |
| 623 | break; |
| 624 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 625 | case MLX4_EVENT_TYPE_COMM_CHANNEL: |
| 626 | if (!mlx4_is_master(dev)) { |
| 627 | mlx4_warn(dev, "Received comm channel event " |
| 628 | "for non master device\n"); |
| 629 | break; |
| 630 | } |
| 631 | memcpy(&priv->mfunc.master.comm_arm_bit_vector, |
| 632 | eqe->event.comm_channel_arm.bit_vec, |
| 633 | sizeof eqe->event.comm_channel_arm.bit_vec); |
| 634 | queue_work(priv->mfunc.master.comm_wq, |
| 635 | &priv->mfunc.master.comm_work); |
| 636 | break; |
| 637 | |
| 638 | case MLX4_EVENT_TYPE_FLR_EVENT: |
| 639 | flr_slave = be32_to_cpu(eqe->event.flr_event.slave_id); |
| 640 | if (!mlx4_is_master(dev)) { |
| 641 | mlx4_warn(dev, "Non-master function received" |
| 642 | "FLR event\n"); |
| 643 | break; |
| 644 | } |
| 645 | |
| 646 | mlx4_dbg(dev, "FLR event for slave: %d\n", flr_slave); |
| 647 | |
Jack Morgenstein | 30f7c73 | 2012-05-30 09:14:50 +0000 | [diff] [blame] | 648 | if (flr_slave >= dev->num_slaves) { |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 649 | mlx4_warn(dev, |
| 650 | "Got FLR for unknown function: %d\n", |
| 651 | flr_slave); |
| 652 | update_slave_state = 0; |
| 653 | } else |
| 654 | update_slave_state = 1; |
| 655 | |
| 656 | spin_lock(&priv->mfunc.master.slave_state_lock); |
| 657 | if (update_slave_state) { |
| 658 | priv->mfunc.master.slave_state[flr_slave].active = false; |
| 659 | priv->mfunc.master.slave_state[flr_slave].last_cmd = MLX4_COMM_CMD_FLR; |
| 660 | priv->mfunc.master.slave_state[flr_slave].is_slave_going_down = 1; |
| 661 | } |
| 662 | spin_unlock(&priv->mfunc.master.slave_state_lock); |
| 663 | queue_work(priv->mfunc.master.comm_wq, |
| 664 | &priv->mfunc.master.slave_flr_event_work); |
| 665 | break; |
Jack Morgenstein | 5984be9 | 2012-03-06 15:50:49 +0200 | [diff] [blame] | 666 | |
| 667 | case MLX4_EVENT_TYPE_FATAL_WARNING: |
| 668 | if (eqe->subtype == MLX4_FATAL_WARNING_SUBTYPE_WARMING) { |
| 669 | if (mlx4_is_master(dev)) |
| 670 | for (i = 0; i < dev->num_slaves; i++) { |
| 671 | mlx4_dbg(dev, "%s: Sending " |
| 672 | "MLX4_FATAL_WARNING_SUBTYPE_WARMING" |
| 673 | " to slave: %d\n", __func__, i); |
| 674 | if (i == dev->caps.function) |
| 675 | continue; |
| 676 | mlx4_slave_event(dev, i, eqe); |
| 677 | } |
| 678 | mlx4_err(dev, "Temperature Threshold was reached! " |
| 679 | "Threshold: %d celsius degrees; " |
| 680 | "Current Temperature: %d\n", |
| 681 | be16_to_cpu(eqe->event.warming.warning_threshold), |
| 682 | be16_to_cpu(eqe->event.warming.current_temperature)); |
| 683 | } else |
| 684 | mlx4_warn(dev, "Unhandled event FATAL WARNING (%02x), " |
| 685 | "subtype %02x on EQ %d at index %u. owner=%x, " |
| 686 | "nent=0x%x, slave=%x, ownership=%s\n", |
| 687 | eqe->type, eqe->subtype, eq->eqn, |
| 688 | eq->cons_index, eqe->owner, eq->nent, |
| 689 | eqe->slave_id, |
| 690 | !!(eqe->owner & 0x80) ^ |
| 691 | !!(eq->cons_index & eq->nent) ? "HW" : "SW"); |
| 692 | |
| 693 | break; |
| 694 | |
Jack Morgenstein | 00f5ce9 | 2012-06-19 11:21:40 +0300 | [diff] [blame] | 695 | case MLX4_EVENT_TYPE_PORT_MNG_CHG_EVENT: |
| 696 | mlx4_dispatch_event(dev, MLX4_DEV_EVENT_PORT_MGMT_CHANGE, |
| 697 | (unsigned long) eqe); |
| 698 | break; |
| 699 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 700 | case MLX4_EVENT_TYPE_EEC_CATAS_ERROR: |
| 701 | case MLX4_EVENT_TYPE_ECC_DETECT: |
| 702 | default: |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 703 | mlx4_warn(dev, "Unhandled event %02x(%02x) on EQ %d at " |
| 704 | "index %u. owner=%x, nent=0x%x, slave=%x, " |
| 705 | "ownership=%s\n", |
| 706 | eqe->type, eqe->subtype, eq->eqn, |
| 707 | eq->cons_index, eqe->owner, eq->nent, |
| 708 | eqe->slave_id, |
| 709 | !!(eqe->owner & 0x80) ^ |
| 710 | !!(eq->cons_index & eq->nent) ? "HW" : "SW"); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 711 | break; |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 712 | }; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 713 | |
| 714 | ++eq->cons_index; |
| 715 | eqes_found = 1; |
| 716 | ++set_ci; |
| 717 | |
| 718 | /* |
| 719 | * The HCA will think the queue has overflowed if we |
| 720 | * don't tell it we've been processing events. We |
| 721 | * create our EQs with MLX4_NUM_SPARE_EQE extra |
| 722 | * entries, so we must update our consumer index at |
| 723 | * least that often. |
| 724 | */ |
| 725 | if (unlikely(set_ci >= MLX4_NUM_SPARE_EQE)) { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 726 | eq_set_ci(eq, 0); |
| 727 | set_ci = 0; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | eq_set_ci(eq, 1); |
| 732 | |
| 733 | return eqes_found; |
| 734 | } |
| 735 | |
| 736 | static irqreturn_t mlx4_interrupt(int irq, void *dev_ptr) |
| 737 | { |
| 738 | struct mlx4_dev *dev = dev_ptr; |
| 739 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 740 | int work = 0; |
| 741 | int i; |
| 742 | |
| 743 | writel(priv->eq_table.clr_mask, priv->eq_table.clr_int); |
| 744 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 745 | for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 746 | work |= mlx4_eq_int(dev, &priv->eq_table.eq[i]); |
| 747 | |
| 748 | return IRQ_RETVAL(work); |
| 749 | } |
| 750 | |
| 751 | static irqreturn_t mlx4_msi_x_interrupt(int irq, void *eq_ptr) |
| 752 | { |
| 753 | struct mlx4_eq *eq = eq_ptr; |
| 754 | struct mlx4_dev *dev = eq->dev; |
| 755 | |
| 756 | mlx4_eq_int(dev, eq); |
| 757 | |
| 758 | /* MSI-X vectors always belong to us */ |
| 759 | return IRQ_HANDLED; |
| 760 | } |
| 761 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 762 | int mlx4_MAP_EQ_wrapper(struct mlx4_dev *dev, int slave, |
| 763 | struct mlx4_vhcr *vhcr, |
| 764 | struct mlx4_cmd_mailbox *inbox, |
| 765 | struct mlx4_cmd_mailbox *outbox, |
| 766 | struct mlx4_cmd_info *cmd) |
| 767 | { |
| 768 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 769 | struct mlx4_slave_event_eq_info *event_eq = |
Marcel Apfelbaum | 803143f | 2012-01-19 09:45:46 +0000 | [diff] [blame] | 770 | priv->mfunc.master.slave_state[slave].event_eq; |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 771 | u32 in_modifier = vhcr->in_modifier; |
| 772 | u32 eqn = in_modifier & 0x1FF; |
| 773 | u64 in_param = vhcr->in_param; |
| 774 | int err = 0; |
Marcel Apfelbaum | 803143f | 2012-01-19 09:45:46 +0000 | [diff] [blame] | 775 | int i; |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 776 | |
| 777 | if (slave == dev->caps.function) |
| 778 | err = mlx4_cmd(dev, in_param, (in_modifier & 0x80000000) | eqn, |
| 779 | 0, MLX4_CMD_MAP_EQ, MLX4_CMD_TIME_CLASS_B, |
| 780 | MLX4_CMD_NATIVE); |
Marcel Apfelbaum | 803143f | 2012-01-19 09:45:46 +0000 | [diff] [blame] | 781 | if (!err) |
| 782 | for (i = 0; i < MLX4_EVENT_TYPES_NUM; ++i) |
| 783 | if (in_param & (1LL << i)) |
| 784 | event_eq[i].eqn = in_modifier >> 31 ? -1 : eqn; |
| 785 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 786 | return err; |
| 787 | } |
| 788 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 789 | static int mlx4_MAP_EQ(struct mlx4_dev *dev, u64 event_mask, int unmap, |
| 790 | int eq_num) |
| 791 | { |
| 792 | return mlx4_cmd(dev, event_mask, (unmap << 31) | eq_num, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 793 | 0, MLX4_CMD_MAP_EQ, MLX4_CMD_TIME_CLASS_B, |
| 794 | MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | static int mlx4_SW2HW_EQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 798 | int eq_num) |
| 799 | { |
Marcel Apfelbaum | eb41049 | 2012-01-19 09:45:19 +0000 | [diff] [blame] | 800 | return mlx4_cmd(dev, mailbox->dma, eq_num, 0, |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 801 | MLX4_CMD_SW2HW_EQ, MLX4_CMD_TIME_CLASS_A, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 802 | MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 803 | } |
| 804 | |
| 805 | static int mlx4_HW2SW_EQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
| 806 | int eq_num) |
| 807 | { |
Marcel Apfelbaum | eb41049 | 2012-01-19 09:45:19 +0000 | [diff] [blame] | 808 | return mlx4_cmd_box(dev, 0, mailbox->dma, eq_num, |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 809 | 0, MLX4_CMD_HW2SW_EQ, MLX4_CMD_TIME_CLASS_A, |
Jack Morgenstein | f9baff5 | 2011-12-13 04:10:51 +0000 | [diff] [blame] | 810 | MLX4_CMD_WRAPPED); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 811 | } |
| 812 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 813 | static int mlx4_num_eq_uar(struct mlx4_dev *dev) |
| 814 | { |
| 815 | /* |
| 816 | * Each UAR holds 4 EQ doorbells. To figure out how many UARs |
| 817 | * we need to map, take the difference of highest index and |
| 818 | * the lowest index we'll use and add 1. |
| 819 | */ |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 820 | return (dev->caps.num_comp_vectors + 1 + dev->caps.reserved_eqs + |
| 821 | dev->caps.comp_pool)/4 - dev->caps.reserved_eqs/4 + 1; |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 822 | } |
| 823 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 824 | static void __iomem *mlx4_get_eq_uar(struct mlx4_dev *dev, struct mlx4_eq *eq) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 825 | { |
| 826 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 827 | int index; |
| 828 | |
| 829 | index = eq->eqn / 4 - dev->caps.reserved_eqs / 4; |
| 830 | |
| 831 | if (!priv->eq_table.uar_map[index]) { |
| 832 | priv->eq_table.uar_map[index] = |
| 833 | ioremap(pci_resource_start(dev->pdev, 2) + |
| 834 | ((eq->eqn / 4) << PAGE_SHIFT), |
| 835 | PAGE_SIZE); |
| 836 | if (!priv->eq_table.uar_map[index]) { |
| 837 | mlx4_err(dev, "Couldn't map EQ doorbell for EQN 0x%06x\n", |
| 838 | eq->eqn); |
| 839 | return NULL; |
| 840 | } |
| 841 | } |
| 842 | |
| 843 | return priv->eq_table.uar_map[index] + 0x800 + 8 * (eq->eqn % 4); |
| 844 | } |
| 845 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 846 | static int mlx4_create_eq(struct mlx4_dev *dev, int nent, |
| 847 | u8 intr, struct mlx4_eq *eq) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 848 | { |
| 849 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 850 | struct mlx4_cmd_mailbox *mailbox; |
| 851 | struct mlx4_eq_context *eq_context; |
| 852 | int npages; |
| 853 | u64 *dma_list = NULL; |
| 854 | dma_addr_t t; |
| 855 | u64 mtt_addr; |
| 856 | int err = -ENOMEM; |
| 857 | int i; |
| 858 | |
| 859 | eq->dev = dev; |
| 860 | eq->nent = roundup_pow_of_two(max(nent, 2)); |
| 861 | npages = PAGE_ALIGN(eq->nent * MLX4_EQ_ENTRY_SIZE) / PAGE_SIZE; |
| 862 | |
| 863 | eq->page_list = kmalloc(npages * sizeof *eq->page_list, |
| 864 | GFP_KERNEL); |
| 865 | if (!eq->page_list) |
| 866 | goto err_out; |
| 867 | |
| 868 | for (i = 0; i < npages; ++i) |
| 869 | eq->page_list[i].buf = NULL; |
| 870 | |
| 871 | dma_list = kmalloc(npages * sizeof *dma_list, GFP_KERNEL); |
| 872 | if (!dma_list) |
| 873 | goto err_out_free; |
| 874 | |
| 875 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 876 | if (IS_ERR(mailbox)) |
| 877 | goto err_out_free; |
| 878 | eq_context = mailbox->buf; |
| 879 | |
| 880 | for (i = 0; i < npages; ++i) { |
| 881 | eq->page_list[i].buf = dma_alloc_coherent(&dev->pdev->dev, |
| 882 | PAGE_SIZE, &t, GFP_KERNEL); |
| 883 | if (!eq->page_list[i].buf) |
| 884 | goto err_out_free_pages; |
| 885 | |
| 886 | dma_list[i] = t; |
| 887 | eq->page_list[i].map = t; |
| 888 | |
| 889 | memset(eq->page_list[i].buf, 0, PAGE_SIZE); |
| 890 | } |
| 891 | |
| 892 | eq->eqn = mlx4_bitmap_alloc(&priv->eq_table.bitmap); |
| 893 | if (eq->eqn == -1) |
| 894 | goto err_out_free_pages; |
| 895 | |
| 896 | eq->doorbell = mlx4_get_eq_uar(dev, eq); |
| 897 | if (!eq->doorbell) { |
| 898 | err = -ENOMEM; |
| 899 | goto err_out_free_eq; |
| 900 | } |
| 901 | |
| 902 | err = mlx4_mtt_init(dev, npages, PAGE_SHIFT, &eq->mtt); |
| 903 | if (err) |
| 904 | goto err_out_free_eq; |
| 905 | |
| 906 | err = mlx4_write_mtt(dev, &eq->mtt, 0, npages, dma_list); |
| 907 | if (err) |
| 908 | goto err_out_free_mtt; |
| 909 | |
| 910 | memset(eq_context, 0, sizeof *eq_context); |
| 911 | eq_context->flags = cpu_to_be32(MLX4_EQ_STATUS_OK | |
| 912 | MLX4_EQ_STATE_ARMED); |
| 913 | eq_context->log_eq_size = ilog2(eq->nent); |
| 914 | eq_context->intr = intr; |
| 915 | eq_context->log_page_size = PAGE_SHIFT - MLX4_ICM_PAGE_SHIFT; |
| 916 | |
| 917 | mtt_addr = mlx4_mtt_addr(dev, &eq->mtt); |
| 918 | eq_context->mtt_base_addr_h = mtt_addr >> 32; |
| 919 | eq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); |
| 920 | |
| 921 | err = mlx4_SW2HW_EQ(dev, mailbox, eq->eqn); |
| 922 | if (err) { |
| 923 | mlx4_warn(dev, "SW2HW_EQ failed (%d)\n", err); |
| 924 | goto err_out_free_mtt; |
| 925 | } |
| 926 | |
| 927 | kfree(dma_list); |
| 928 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 929 | |
| 930 | eq->cons_index = 0; |
| 931 | |
| 932 | return err; |
| 933 | |
| 934 | err_out_free_mtt: |
| 935 | mlx4_mtt_cleanup(dev, &eq->mtt); |
| 936 | |
| 937 | err_out_free_eq: |
| 938 | mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn); |
| 939 | |
| 940 | err_out_free_pages: |
| 941 | for (i = 0; i < npages; ++i) |
| 942 | if (eq->page_list[i].buf) |
| 943 | dma_free_coherent(&dev->pdev->dev, PAGE_SIZE, |
| 944 | eq->page_list[i].buf, |
| 945 | eq->page_list[i].map); |
| 946 | |
| 947 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 948 | |
| 949 | err_out_free: |
| 950 | kfree(eq->page_list); |
| 951 | kfree(dma_list); |
| 952 | |
| 953 | err_out: |
| 954 | return err; |
| 955 | } |
| 956 | |
| 957 | static void mlx4_free_eq(struct mlx4_dev *dev, |
| 958 | struct mlx4_eq *eq) |
| 959 | { |
| 960 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 961 | struct mlx4_cmd_mailbox *mailbox; |
| 962 | int err; |
| 963 | int npages = PAGE_ALIGN(MLX4_EQ_ENTRY_SIZE * eq->nent) / PAGE_SIZE; |
| 964 | int i; |
| 965 | |
| 966 | mailbox = mlx4_alloc_cmd_mailbox(dev); |
| 967 | if (IS_ERR(mailbox)) |
| 968 | return; |
| 969 | |
| 970 | err = mlx4_HW2SW_EQ(dev, mailbox, eq->eqn); |
| 971 | if (err) |
| 972 | mlx4_warn(dev, "HW2SW_EQ failed (%d)\n", err); |
| 973 | |
| 974 | if (0) { |
| 975 | mlx4_dbg(dev, "Dumping EQ context %02x:\n", eq->eqn); |
| 976 | for (i = 0; i < sizeof (struct mlx4_eq_context) / 4; ++i) { |
| 977 | if (i % 4 == 0) |
Joe Perches | 0a645e8 | 2010-07-10 07:22:46 +0000 | [diff] [blame] | 978 | pr_cont("[%02x] ", i * 4); |
| 979 | pr_cont(" %08x", be32_to_cpup(mailbox->buf + i * 4)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 980 | if ((i + 1) % 4 == 0) |
Joe Perches | 0a645e8 | 2010-07-10 07:22:46 +0000 | [diff] [blame] | 981 | pr_cont("\n"); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 982 | } |
| 983 | } |
| 984 | |
| 985 | mlx4_mtt_cleanup(dev, &eq->mtt); |
| 986 | for (i = 0; i < npages; ++i) |
Dotan Barak | a8dc0df | 2011-10-06 09:33:12 -0700 | [diff] [blame] | 987 | dma_free_coherent(&dev->pdev->dev, PAGE_SIZE, |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 988 | eq->page_list[i].buf, |
| 989 | eq->page_list[i].map); |
| 990 | |
| 991 | kfree(eq->page_list); |
| 992 | mlx4_bitmap_free(&priv->eq_table.bitmap, eq->eqn); |
| 993 | mlx4_free_cmd_mailbox(dev, mailbox); |
| 994 | } |
| 995 | |
| 996 | static void mlx4_free_irqs(struct mlx4_dev *dev) |
| 997 | { |
| 998 | struct mlx4_eq_table *eq_table = &mlx4_priv(dev)->eq_table; |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 999 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1000 | int i, vec; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1001 | |
| 1002 | if (eq_table->have_irq) |
| 1003 | free_irq(dev->pdev->irq, dev); |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1004 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1005 | for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) |
Roland Dreier | d1fdf24 | 2009-06-14 13:30:45 -0700 | [diff] [blame] | 1006 | if (eq_table->eq[i].have_irq) { |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1007 | free_irq(eq_table->eq[i].irq, eq_table->eq + i); |
Roland Dreier | d1fdf24 | 2009-06-14 13:30:45 -0700 | [diff] [blame] | 1008 | eq_table->eq[i].have_irq = 0; |
| 1009 | } |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1010 | |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1011 | for (i = 0; i < dev->caps.comp_pool; i++) { |
| 1012 | /* |
| 1013 | * Freeing the assigned irq's |
| 1014 | * all bits should be 0, but we need to validate |
| 1015 | */ |
| 1016 | if (priv->msix_ctl.pool_bm & 1ULL << i) { |
| 1017 | /* NO need protecting*/ |
| 1018 | vec = dev->caps.num_comp_vectors + 1 + i; |
| 1019 | free_irq(priv->eq_table.eq[vec].irq, |
| 1020 | &priv->eq_table.eq[vec]); |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1025 | kfree(eq_table->irq_names); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1026 | } |
| 1027 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 1028 | static int mlx4_map_clr_int(struct mlx4_dev *dev) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1029 | { |
| 1030 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1031 | |
| 1032 | priv->clr_base = ioremap(pci_resource_start(dev->pdev, priv->fw.clr_int_bar) + |
| 1033 | priv->fw.clr_int_base, MLX4_CLR_INT_SIZE); |
| 1034 | if (!priv->clr_base) { |
| 1035 | mlx4_err(dev, "Couldn't map interrupt clear register, aborting.\n"); |
| 1036 | return -ENOMEM; |
| 1037 | } |
| 1038 | |
| 1039 | return 0; |
| 1040 | } |
| 1041 | |
| 1042 | static void mlx4_unmap_clr_int(struct mlx4_dev *dev) |
| 1043 | { |
| 1044 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1045 | |
| 1046 | iounmap(priv->clr_base); |
| 1047 | } |
| 1048 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1049 | int mlx4_alloc_eq_table(struct mlx4_dev *dev) |
| 1050 | { |
| 1051 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1052 | |
| 1053 | priv->eq_table.eq = kcalloc(dev->caps.num_eqs - dev->caps.reserved_eqs, |
| 1054 | sizeof *priv->eq_table.eq, GFP_KERNEL); |
| 1055 | if (!priv->eq_table.eq) |
| 1056 | return -ENOMEM; |
| 1057 | |
| 1058 | return 0; |
| 1059 | } |
| 1060 | |
| 1061 | void mlx4_free_eq_table(struct mlx4_dev *dev) |
| 1062 | { |
| 1063 | kfree(mlx4_priv(dev)->eq_table.eq); |
| 1064 | } |
| 1065 | |
Roland Dreier | 3d73c28 | 2007-10-10 15:43:54 -0700 | [diff] [blame] | 1066 | int mlx4_init_eq_table(struct mlx4_dev *dev) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1067 | { |
| 1068 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1069 | int err; |
| 1070 | int i; |
| 1071 | |
Axel Lin | 758ff23 | 2012-02-12 15:14:39 +0000 | [diff] [blame] | 1072 | priv->eq_table.uar_map = kcalloc(mlx4_num_eq_uar(dev), |
| 1073 | sizeof *priv->eq_table.uar_map, |
| 1074 | GFP_KERNEL); |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1075 | if (!priv->eq_table.uar_map) { |
| 1076 | err = -ENOMEM; |
| 1077 | goto err_out_free; |
| 1078 | } |
| 1079 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1080 | err = mlx4_bitmap_init(&priv->eq_table.bitmap, dev->caps.num_eqs, |
Yevgeny Petrilin | 93fc9e1 | 2008-10-22 10:25:29 -0700 | [diff] [blame] | 1081 | dev->caps.num_eqs - 1, dev->caps.reserved_eqs, 0); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1082 | if (err) |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1083 | goto err_out_free; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1084 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1085 | for (i = 0; i < mlx4_num_eq_uar(dev); ++i) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1086 | priv->eq_table.uar_map[i] = NULL; |
| 1087 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 1088 | if (!mlx4_is_slave(dev)) { |
| 1089 | err = mlx4_map_clr_int(dev); |
| 1090 | if (err) |
| 1091 | goto err_out_bitmap; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1092 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 1093 | priv->eq_table.clr_mask = |
| 1094 | swab32(1 << (priv->eq_table.inta_pin & 31)); |
| 1095 | priv->eq_table.clr_int = priv->clr_base + |
| 1096 | (priv->eq_table.inta_pin < 32 ? 4 : 0); |
| 1097 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1098 | |
Arputham Benjamin | f5f5951 | 2009-09-05 20:24:50 -0700 | [diff] [blame] | 1099 | priv->eq_table.irq_names = |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1100 | kmalloc(MLX4_IRQNAME_SIZE * (dev->caps.num_comp_vectors + 1 + |
| 1101 | dev->caps.comp_pool), |
Arputham Benjamin | f5f5951 | 2009-09-05 20:24:50 -0700 | [diff] [blame] | 1102 | GFP_KERNEL); |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1103 | if (!priv->eq_table.irq_names) { |
| 1104 | err = -ENOMEM; |
| 1105 | goto err_out_bitmap; |
| 1106 | } |
| 1107 | |
| 1108 | for (i = 0; i < dev->caps.num_comp_vectors; ++i) { |
Yevgeny Petrilin | c379474 | 2011-03-30 23:30:17 +0000 | [diff] [blame] | 1109 | err = mlx4_create_eq(dev, dev->caps.num_cqs - |
| 1110 | dev->caps.reserved_cqs + |
| 1111 | MLX4_NUM_SPARE_EQE, |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1112 | (dev->flags & MLX4_FLAG_MSI_X) ? i : 0, |
| 1113 | &priv->eq_table.eq[i]); |
Yevgeny Petrilin | a5b19b6 | 2009-06-08 00:39:58 -0700 | [diff] [blame] | 1114 | if (err) { |
| 1115 | --i; |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1116 | goto err_out_unmap; |
Yevgeny Petrilin | a5b19b6 | 2009-06-08 00:39:58 -0700 | [diff] [blame] | 1117 | } |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1118 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1119 | |
| 1120 | err = mlx4_create_eq(dev, MLX4_NUM_ASYNC_EQE + MLX4_NUM_SPARE_EQE, |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1121 | (dev->flags & MLX4_FLAG_MSI_X) ? dev->caps.num_comp_vectors : 0, |
| 1122 | &priv->eq_table.eq[dev->caps.num_comp_vectors]); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1123 | if (err) |
| 1124 | goto err_out_comp; |
| 1125 | |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1126 | /*if additional completion vectors poolsize is 0 this loop will not run*/ |
| 1127 | for (i = dev->caps.num_comp_vectors + 1; |
| 1128 | i < dev->caps.num_comp_vectors + dev->caps.comp_pool + 1; ++i) { |
| 1129 | |
| 1130 | err = mlx4_create_eq(dev, dev->caps.num_cqs - |
| 1131 | dev->caps.reserved_cqs + |
| 1132 | MLX4_NUM_SPARE_EQE, |
| 1133 | (dev->flags & MLX4_FLAG_MSI_X) ? i : 0, |
| 1134 | &priv->eq_table.eq[i]); |
| 1135 | if (err) { |
| 1136 | --i; |
| 1137 | goto err_out_unmap; |
| 1138 | } |
| 1139 | } |
| 1140 | |
| 1141 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1142 | if (dev->flags & MLX4_FLAG_MSI_X) { |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1143 | const char *eq_name; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1144 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1145 | for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) { |
| 1146 | if (i < dev->caps.num_comp_vectors) { |
Arputham Benjamin | f5f5951 | 2009-09-05 20:24:50 -0700 | [diff] [blame] | 1147 | snprintf(priv->eq_table.irq_names + |
| 1148 | i * MLX4_IRQNAME_SIZE, |
| 1149 | MLX4_IRQNAME_SIZE, |
| 1150 | "mlx4-comp-%d@pci:%s", i, |
| 1151 | pci_name(dev->pdev)); |
| 1152 | } else { |
| 1153 | snprintf(priv->eq_table.irq_names + |
| 1154 | i * MLX4_IRQNAME_SIZE, |
| 1155 | MLX4_IRQNAME_SIZE, |
| 1156 | "mlx4-async@pci:%s", |
| 1157 | pci_name(dev->pdev)); |
| 1158 | } |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1159 | |
Arputham Benjamin | f5f5951 | 2009-09-05 20:24:50 -0700 | [diff] [blame] | 1160 | eq_name = priv->eq_table.irq_names + |
| 1161 | i * MLX4_IRQNAME_SIZE; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1162 | err = request_irq(priv->eq_table.eq[i].irq, |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1163 | mlx4_msi_x_interrupt, 0, eq_name, |
| 1164 | priv->eq_table.eq + i); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1165 | if (err) |
Jack Morgenstein | ee49bd9 | 2007-07-12 17:50:45 +0300 | [diff] [blame] | 1166 | goto err_out_async; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1167 | |
| 1168 | priv->eq_table.eq[i].have_irq = 1; |
| 1169 | } |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1170 | } else { |
Arputham Benjamin | f5f5951 | 2009-09-05 20:24:50 -0700 | [diff] [blame] | 1171 | snprintf(priv->eq_table.irq_names, |
| 1172 | MLX4_IRQNAME_SIZE, |
| 1173 | DRV_NAME "@pci:%s", |
| 1174 | pci_name(dev->pdev)); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1175 | err = request_irq(dev->pdev->irq, mlx4_interrupt, |
Arputham Benjamin | f5f5951 | 2009-09-05 20:24:50 -0700 | [diff] [blame] | 1176 | IRQF_SHARED, priv->eq_table.irq_names, dev); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1177 | if (err) |
| 1178 | goto err_out_async; |
| 1179 | |
| 1180 | priv->eq_table.have_irq = 1; |
| 1181 | } |
| 1182 | |
Jack Morgenstein | 00f5ce9 | 2012-06-19 11:21:40 +0300 | [diff] [blame] | 1183 | err = mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0, |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1184 | priv->eq_table.eq[dev->caps.num_comp_vectors].eqn); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1185 | if (err) |
| 1186 | mlx4_warn(dev, "MAP_EQ for async EQ %d failed (%d)\n", |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1187 | priv->eq_table.eq[dev->caps.num_comp_vectors].eqn, err); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1188 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1189 | for (i = 0; i < dev->caps.num_comp_vectors + 1; ++i) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1190 | eq_set_ci(&priv->eq_table.eq[i], 1); |
| 1191 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1192 | return 0; |
| 1193 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1194 | err_out_async: |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1195 | mlx4_free_eq(dev, &priv->eq_table.eq[dev->caps.num_comp_vectors]); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1196 | |
| 1197 | err_out_comp: |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1198 | i = dev->caps.num_comp_vectors - 1; |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1199 | |
| 1200 | err_out_unmap: |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1201 | while (i >= 0) { |
| 1202 | mlx4_free_eq(dev, &priv->eq_table.eq[i]); |
| 1203 | --i; |
| 1204 | } |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 1205 | if (!mlx4_is_slave(dev)) |
| 1206 | mlx4_unmap_clr_int(dev); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1207 | mlx4_free_irqs(dev); |
| 1208 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1209 | err_out_bitmap: |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1210 | mlx4_bitmap_cleanup(&priv->eq_table.bitmap); |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1211 | |
| 1212 | err_out_free: |
| 1213 | kfree(priv->eq_table.uar_map); |
| 1214 | |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1215 | return err; |
| 1216 | } |
| 1217 | |
| 1218 | void mlx4_cleanup_eq_table(struct mlx4_dev *dev) |
| 1219 | { |
| 1220 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1221 | int i; |
| 1222 | |
Jack Morgenstein | 00f5ce9 | 2012-06-19 11:21:40 +0300 | [diff] [blame] | 1223 | mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 1, |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1224 | priv->eq_table.eq[dev->caps.num_comp_vectors].eqn); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1225 | |
| 1226 | mlx4_free_irqs(dev); |
| 1227 | |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1228 | for (i = 0; i < dev->caps.num_comp_vectors + dev->caps.comp_pool + 1; ++i) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1229 | mlx4_free_eq(dev, &priv->eq_table.eq[i]); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1230 | |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 1231 | if (!mlx4_is_slave(dev)) |
| 1232 | mlx4_unmap_clr_int(dev); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1233 | |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1234 | for (i = 0; i < mlx4_num_eq_uar(dev); ++i) |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1235 | if (priv->eq_table.uar_map[i]) |
| 1236 | iounmap(priv->eq_table.uar_map[i]); |
| 1237 | |
| 1238 | mlx4_bitmap_cleanup(&priv->eq_table.bitmap); |
Yevgeny Petrilin | b8dd786 | 2008-12-22 07:15:03 -0800 | [diff] [blame] | 1239 | |
| 1240 | kfree(priv->eq_table.uar_map); |
Roland Dreier | 225c7b1 | 2007-05-08 18:00:38 -0700 | [diff] [blame] | 1241 | } |
Yevgeny Petrilin | e7c1c2c4 | 2010-08-24 03:46:18 +0000 | [diff] [blame] | 1242 | |
| 1243 | /* A test that verifies that we can accept interrupts on all |
| 1244 | * the irq vectors of the device. |
| 1245 | * Interrupts are checked using the NOP command. |
| 1246 | */ |
| 1247 | int mlx4_test_interrupts(struct mlx4_dev *dev) |
| 1248 | { |
| 1249 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1250 | int i; |
| 1251 | int err; |
| 1252 | |
| 1253 | err = mlx4_NOP(dev); |
| 1254 | /* When not in MSI_X, there is only one irq to check */ |
Jack Morgenstein | acba242 | 2011-12-13 04:13:58 +0000 | [diff] [blame] | 1255 | if (!(dev->flags & MLX4_FLAG_MSI_X) || mlx4_is_slave(dev)) |
Yevgeny Petrilin | e7c1c2c4 | 2010-08-24 03:46:18 +0000 | [diff] [blame] | 1256 | return err; |
| 1257 | |
| 1258 | /* A loop over all completion vectors, for each vector we will check |
| 1259 | * whether it works by mapping command completions to that vector |
| 1260 | * and performing a NOP command |
| 1261 | */ |
| 1262 | for(i = 0; !err && (i < dev->caps.num_comp_vectors); ++i) { |
| 1263 | /* Temporary use polling for command completions */ |
| 1264 | mlx4_cmd_use_polling(dev); |
| 1265 | |
| 1266 | /* Map the new eq to handle all asyncronous events */ |
Jack Morgenstein | 00f5ce9 | 2012-06-19 11:21:40 +0300 | [diff] [blame] | 1267 | err = mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0, |
Yevgeny Petrilin | e7c1c2c4 | 2010-08-24 03:46:18 +0000 | [diff] [blame] | 1268 | priv->eq_table.eq[i].eqn); |
| 1269 | if (err) { |
| 1270 | mlx4_warn(dev, "Failed mapping eq for interrupt test\n"); |
| 1271 | mlx4_cmd_use_events(dev); |
| 1272 | break; |
| 1273 | } |
| 1274 | |
| 1275 | /* Go back to using events */ |
| 1276 | mlx4_cmd_use_events(dev); |
| 1277 | err = mlx4_NOP(dev); |
| 1278 | } |
| 1279 | |
| 1280 | /* Return to default */ |
Jack Morgenstein | 00f5ce9 | 2012-06-19 11:21:40 +0300 | [diff] [blame] | 1281 | mlx4_MAP_EQ(dev, get_async_ev_mask(dev), 0, |
Yevgeny Petrilin | e7c1c2c4 | 2010-08-24 03:46:18 +0000 | [diff] [blame] | 1282 | priv->eq_table.eq[dev->caps.num_comp_vectors].eqn); |
| 1283 | return err; |
| 1284 | } |
| 1285 | EXPORT_SYMBOL(mlx4_test_interrupts); |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1286 | |
Amir Vadai | d9236c3 | 2012-07-18 22:33:51 +0000 | [diff] [blame] | 1287 | int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap, |
| 1288 | int *vector) |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1289 | { |
| 1290 | |
| 1291 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1292 | int vec = 0, err = 0, i; |
| 1293 | |
Yevgeny Petrilin | 730c41d | 2012-02-21 03:39:32 +0000 | [diff] [blame] | 1294 | mutex_lock(&priv->msix_ctl.pool_lock); |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1295 | for (i = 0; !vec && i < dev->caps.comp_pool; i++) { |
| 1296 | if (~priv->msix_ctl.pool_bm & 1ULL << i) { |
| 1297 | priv->msix_ctl.pool_bm |= 1ULL << i; |
| 1298 | vec = dev->caps.num_comp_vectors + 1 + i; |
| 1299 | snprintf(priv->eq_table.irq_names + |
| 1300 | vec * MLX4_IRQNAME_SIZE, |
| 1301 | MLX4_IRQNAME_SIZE, "%s", name); |
Amir Vadai | d9236c3 | 2012-07-18 22:33:51 +0000 | [diff] [blame] | 1302 | #ifdef CONFIG_RFS_ACCEL |
| 1303 | if (rmap) { |
| 1304 | err = irq_cpu_rmap_add(rmap, |
| 1305 | priv->eq_table.eq[vec].irq); |
| 1306 | if (err) |
| 1307 | mlx4_warn(dev, "Failed adding irq rmap\n"); |
| 1308 | } |
| 1309 | #endif |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1310 | err = request_irq(priv->eq_table.eq[vec].irq, |
| 1311 | mlx4_msi_x_interrupt, 0, |
| 1312 | &priv->eq_table.irq_names[vec<<5], |
| 1313 | priv->eq_table.eq + vec); |
| 1314 | if (err) { |
| 1315 | /*zero out bit by fliping it*/ |
| 1316 | priv->msix_ctl.pool_bm ^= 1 << i; |
| 1317 | vec = 0; |
| 1318 | continue; |
| 1319 | /*we dont want to break here*/ |
| 1320 | } |
| 1321 | eq_set_ci(&priv->eq_table.eq[vec], 1); |
| 1322 | } |
| 1323 | } |
Yevgeny Petrilin | 730c41d | 2012-02-21 03:39:32 +0000 | [diff] [blame] | 1324 | mutex_unlock(&priv->msix_ctl.pool_lock); |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1325 | |
| 1326 | if (vec) { |
| 1327 | *vector = vec; |
| 1328 | } else { |
| 1329 | *vector = 0; |
| 1330 | err = (i == dev->caps.comp_pool) ? -ENOSPC : err; |
| 1331 | } |
| 1332 | return err; |
| 1333 | } |
| 1334 | EXPORT_SYMBOL(mlx4_assign_eq); |
| 1335 | |
| 1336 | void mlx4_release_eq(struct mlx4_dev *dev, int vec) |
| 1337 | { |
| 1338 | struct mlx4_priv *priv = mlx4_priv(dev); |
| 1339 | /*bm index*/ |
| 1340 | int i = vec - dev->caps.num_comp_vectors - 1; |
| 1341 | |
| 1342 | if (likely(i >= 0)) { |
| 1343 | /*sanity check , making sure were not trying to free irq's |
| 1344 | Belonging to a legacy EQ*/ |
Yevgeny Petrilin | 730c41d | 2012-02-21 03:39:32 +0000 | [diff] [blame] | 1345 | mutex_lock(&priv->msix_ctl.pool_lock); |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1346 | if (priv->msix_ctl.pool_bm & 1ULL << i) { |
| 1347 | free_irq(priv->eq_table.eq[vec].irq, |
| 1348 | &priv->eq_table.eq[vec]); |
| 1349 | priv->msix_ctl.pool_bm &= ~(1ULL << i); |
| 1350 | } |
Yevgeny Petrilin | 730c41d | 2012-02-21 03:39:32 +0000 | [diff] [blame] | 1351 | mutex_unlock(&priv->msix_ctl.pool_lock); |
Yevgeny Petrilin | 0b7ca5a | 2011-03-22 22:37:47 +0000 | [diff] [blame] | 1352 | } |
| 1353 | |
| 1354 | } |
| 1355 | EXPORT_SYMBOL(mlx4_release_eq); |
| 1356 | |