Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the Chelsio FCoE driver for Linux. |
| 3 | * |
| 4 | * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. |
| 5 | * |
| 6 | * This software is available to you under a choice of one of two |
| 7 | * licenses. You may choose to be licensed under the terms of the GNU |
| 8 | * General Public License (GPL) Version 2, available from the file |
| 9 | * COPYING in the main directory of this source tree, or the |
| 10 | * OpenIB.org BSD license below: |
| 11 | * |
| 12 | * Redistribution and use in source and binary forms, with or |
| 13 | * without modification, are permitted provided that the following |
| 14 | * conditions are met: |
| 15 | * |
| 16 | * - Redistributions of source code must retain the above |
| 17 | * copyright notice, this list of conditions and the following |
| 18 | * disclaimer. |
| 19 | * |
| 20 | * - Redistributions in binary form must reproduce the above |
| 21 | * copyright notice, this list of conditions and the following |
| 22 | * disclaimer in the documentation and/or other materials |
| 23 | * provided with the distribution. |
| 24 | * |
| 25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 32 | * SOFTWARE. |
| 33 | */ |
| 34 | |
| 35 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 36 | |
| 37 | #include <linux/kernel.h> |
| 38 | #include <linux/module.h> |
| 39 | #include <linux/init.h> |
| 40 | #include <linux/pci.h> |
| 41 | #include <linux/aer.h> |
| 42 | #include <linux/mm.h> |
| 43 | #include <linux/notifier.h> |
| 44 | #include <linux/kdebug.h> |
| 45 | #include <linux/seq_file.h> |
| 46 | #include <linux/debugfs.h> |
| 47 | #include <linux/string.h> |
| 48 | #include <linux/export.h> |
| 49 | |
| 50 | #include "csio_init.h" |
| 51 | #include "csio_defs.h" |
| 52 | |
| 53 | #define CSIO_MIN_MEMPOOL_SZ 64 |
| 54 | |
| 55 | static struct dentry *csio_debugfs_root; |
| 56 | |
| 57 | static struct scsi_transport_template *csio_fcoe_transport; |
| 58 | static struct scsi_transport_template *csio_fcoe_transport_vport; |
| 59 | |
| 60 | /* |
| 61 | * debugfs support |
| 62 | */ |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 63 | static ssize_t |
| 64 | csio_mem_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
| 65 | { |
| 66 | loff_t pos = *ppos; |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 67 | loff_t avail = file_inode(file)->i_size; |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 68 | unsigned int mem = (uintptr_t)file->private_data & 3; |
| 69 | struct csio_hw *hw = file->private_data - mem; |
| 70 | |
| 71 | if (pos < 0) |
| 72 | return -EINVAL; |
| 73 | if (pos >= avail) |
| 74 | return 0; |
| 75 | if (count > avail - pos) |
| 76 | count = avail - pos; |
| 77 | |
| 78 | while (count) { |
| 79 | size_t len; |
| 80 | int ret, ofst; |
| 81 | __be32 data[16]; |
| 82 | |
| 83 | if (mem == MEM_MC) |
Arvind Bhushan | 7cc1638 | 2013-03-14 05:09:08 +0000 | [diff] [blame] | 84 | ret = hw->chip_ops->chip_mc_read(hw, 0, pos, |
| 85 | data, NULL); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 86 | else |
Arvind Bhushan | 7cc1638 | 2013-03-14 05:09:08 +0000 | [diff] [blame] | 87 | ret = hw->chip_ops->chip_edc_read(hw, mem, pos, |
| 88 | data, NULL); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 89 | if (ret) |
| 90 | return ret; |
| 91 | |
| 92 | ofst = pos % sizeof(data); |
| 93 | len = min(count, sizeof(data) - ofst); |
| 94 | if (copy_to_user(buf, (u8 *)data + ofst, len)) |
| 95 | return -EFAULT; |
| 96 | |
| 97 | buf += len; |
| 98 | pos += len; |
| 99 | count -= len; |
| 100 | } |
| 101 | count = pos - *ppos; |
| 102 | *ppos = pos; |
| 103 | return count; |
| 104 | } |
| 105 | |
| 106 | static const struct file_operations csio_mem_debugfs_fops = { |
| 107 | .owner = THIS_MODULE, |
Wei Yongjun | f07cda8 | 2012-12-03 01:22:39 -0500 | [diff] [blame] | 108 | .open = simple_open, |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 109 | .read = csio_mem_read, |
| 110 | .llseek = default_llseek, |
| 111 | }; |
| 112 | |
Arvind Bhushan | 7cc1638 | 2013-03-14 05:09:08 +0000 | [diff] [blame] | 113 | void csio_add_debugfs_mem(struct csio_hw *hw, const char *name, |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 114 | unsigned int idx, unsigned int size_mb) |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 115 | { |
| 116 | struct dentry *de; |
| 117 | |
| 118 | de = debugfs_create_file(name, S_IRUSR, hw->debugfs_root, |
| 119 | (void *)hw + idx, &csio_mem_debugfs_fops); |
| 120 | if (de && de->d_inode) |
| 121 | de->d_inode->i_size = size_mb << 20; |
| 122 | } |
| 123 | |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 124 | static int csio_setup_debugfs(struct csio_hw *hw) |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 125 | { |
| 126 | int i; |
| 127 | |
| 128 | if (IS_ERR_OR_NULL(hw->debugfs_root)) |
| 129 | return -1; |
| 130 | |
| 131 | i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE); |
| 132 | if (i & EDRAM0_ENABLE) |
| 133 | csio_add_debugfs_mem(hw, "edc0", MEM_EDC0, 5); |
| 134 | if (i & EDRAM1_ENABLE) |
| 135 | csio_add_debugfs_mem(hw, "edc1", MEM_EDC1, 5); |
Arvind Bhushan | 7cc1638 | 2013-03-14 05:09:08 +0000 | [diff] [blame] | 136 | |
| 137 | hw->chip_ops->chip_dfs_create_ext_mem(hw); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | /* |
| 142 | * csio_dfs_create - Creates and sets up per-hw debugfs. |
| 143 | * |
| 144 | */ |
| 145 | static int |
| 146 | csio_dfs_create(struct csio_hw *hw) |
| 147 | { |
| 148 | if (csio_debugfs_root) { |
| 149 | hw->debugfs_root = debugfs_create_dir(pci_name(hw->pdev), |
| 150 | csio_debugfs_root); |
| 151 | csio_setup_debugfs(hw); |
| 152 | } |
| 153 | |
| 154 | return 0; |
| 155 | } |
| 156 | |
| 157 | /* |
| 158 | * csio_dfs_destroy - Destroys per-hw debugfs. |
| 159 | */ |
| 160 | static int |
| 161 | csio_dfs_destroy(struct csio_hw *hw) |
| 162 | { |
| 163 | if (hw->debugfs_root) |
| 164 | debugfs_remove_recursive(hw->debugfs_root); |
| 165 | |
| 166 | return 0; |
| 167 | } |
| 168 | |
| 169 | /* |
| 170 | * csio_dfs_init - Debug filesystem initialization for the module. |
| 171 | * |
| 172 | */ |
| 173 | static int |
| 174 | csio_dfs_init(void) |
| 175 | { |
| 176 | csio_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); |
| 177 | if (!csio_debugfs_root) |
| 178 | pr_warn("Could not create debugfs entry, continuing\n"); |
| 179 | |
| 180 | return 0; |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * csio_dfs_exit - debugfs cleanup for the module. |
| 185 | */ |
| 186 | static void |
| 187 | csio_dfs_exit(void) |
| 188 | { |
| 189 | debugfs_remove(csio_debugfs_root); |
| 190 | } |
| 191 | |
| 192 | /* |
| 193 | * csio_pci_init - PCI initialization. |
| 194 | * @pdev: PCI device. |
| 195 | * @bars: Bitmask of bars to be requested. |
| 196 | * |
| 197 | * Initializes the PCI function by enabling MMIO, setting bus |
| 198 | * mastership and setting DMA mask. |
| 199 | */ |
| 200 | static int |
| 201 | csio_pci_init(struct pci_dev *pdev, int *bars) |
| 202 | { |
| 203 | int rv = -ENODEV; |
| 204 | |
| 205 | *bars = pci_select_bars(pdev, IORESOURCE_MEM); |
| 206 | |
| 207 | if (pci_enable_device_mem(pdev)) |
| 208 | goto err; |
| 209 | |
| 210 | if (pci_request_selected_regions(pdev, *bars, KBUILD_MODNAME)) |
| 211 | goto err_disable_device; |
| 212 | |
| 213 | pci_set_master(pdev); |
| 214 | pci_try_set_mwi(pdev); |
| 215 | |
| 216 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { |
| 217 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
| 218 | } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { |
| 219 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
| 220 | } else { |
| 221 | dev_err(&pdev->dev, "No suitable DMA available.\n"); |
| 222 | goto err_release_regions; |
| 223 | } |
| 224 | |
| 225 | return 0; |
| 226 | |
| 227 | err_release_regions: |
| 228 | pci_release_selected_regions(pdev, *bars); |
| 229 | err_disable_device: |
| 230 | pci_disable_device(pdev); |
| 231 | err: |
| 232 | return rv; |
| 233 | |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * csio_pci_exit - PCI unitialization. |
| 238 | * @pdev: PCI device. |
| 239 | * @bars: Bars to be released. |
| 240 | * |
| 241 | */ |
| 242 | static void |
| 243 | csio_pci_exit(struct pci_dev *pdev, int *bars) |
| 244 | { |
| 245 | pci_release_selected_regions(pdev, *bars); |
| 246 | pci_disable_device(pdev); |
| 247 | } |
| 248 | |
| 249 | /* |
| 250 | * csio_hw_init_workers - Initialize the HW module's worker threads. |
| 251 | * @hw: HW module. |
| 252 | * |
| 253 | */ |
| 254 | static void |
| 255 | csio_hw_init_workers(struct csio_hw *hw) |
| 256 | { |
| 257 | INIT_WORK(&hw->evtq_work, csio_evtq_worker); |
| 258 | } |
| 259 | |
| 260 | static void |
| 261 | csio_hw_exit_workers(struct csio_hw *hw) |
| 262 | { |
| 263 | cancel_work_sync(&hw->evtq_work); |
| 264 | flush_scheduled_work(); |
| 265 | } |
| 266 | |
| 267 | static int |
| 268 | csio_create_queues(struct csio_hw *hw) |
| 269 | { |
| 270 | int i, j; |
| 271 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); |
| 272 | int rv; |
| 273 | struct csio_scsi_cpu_info *info; |
| 274 | |
| 275 | if (hw->flags & CSIO_HWF_Q_FW_ALLOCED) |
| 276 | return 0; |
| 277 | |
| 278 | if (hw->intr_mode != CSIO_IM_MSIX) { |
| 279 | rv = csio_wr_iq_create(hw, NULL, hw->intr_iq_idx, |
| 280 | 0, hw->pport[0].portid, false, NULL); |
| 281 | if (rv != 0) { |
| 282 | csio_err(hw, " Forward Interrupt IQ failed!: %d\n", rv); |
| 283 | return rv; |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | /* FW event queue */ |
| 288 | rv = csio_wr_iq_create(hw, NULL, hw->fwevt_iq_idx, |
| 289 | csio_get_fwevt_intr_idx(hw), |
| 290 | hw->pport[0].portid, true, NULL); |
| 291 | if (rv != 0) { |
| 292 | csio_err(hw, "FW event IQ config failed!: %d\n", rv); |
| 293 | return rv; |
| 294 | } |
| 295 | |
| 296 | /* Create mgmt queue */ |
| 297 | rv = csio_wr_eq_create(hw, NULL, mgmtm->eq_idx, |
| 298 | mgmtm->iq_idx, hw->pport[0].portid, NULL); |
| 299 | |
| 300 | if (rv != 0) { |
| 301 | csio_err(hw, "Mgmt EQ create failed!: %d\n", rv); |
| 302 | goto err; |
| 303 | } |
| 304 | |
| 305 | /* Create SCSI queues */ |
| 306 | for (i = 0; i < hw->num_pports; i++) { |
| 307 | info = &hw->scsi_cpu_info[i]; |
| 308 | |
| 309 | for (j = 0; j < info->max_cpus; j++) { |
| 310 | struct csio_scsi_qset *sqset = &hw->sqset[i][j]; |
| 311 | |
| 312 | rv = csio_wr_iq_create(hw, NULL, sqset->iq_idx, |
| 313 | sqset->intr_idx, i, false, NULL); |
| 314 | if (rv != 0) { |
| 315 | csio_err(hw, |
| 316 | "SCSI module IQ config failed [%d][%d]:%d\n", |
| 317 | i, j, rv); |
| 318 | goto err; |
| 319 | } |
| 320 | rv = csio_wr_eq_create(hw, NULL, sqset->eq_idx, |
| 321 | sqset->iq_idx, i, NULL); |
| 322 | if (rv != 0) { |
| 323 | csio_err(hw, |
| 324 | "SCSI module EQ config failed [%d][%d]:%d\n", |
| 325 | i, j, rv); |
| 326 | goto err; |
| 327 | } |
| 328 | } /* for all CPUs */ |
| 329 | } /* For all ports */ |
| 330 | |
| 331 | hw->flags |= CSIO_HWF_Q_FW_ALLOCED; |
| 332 | return 0; |
| 333 | err: |
| 334 | csio_wr_destroy_queues(hw, true); |
| 335 | return -EINVAL; |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * csio_config_queues - Configure the DMA queues. |
| 340 | * @hw: HW module. |
| 341 | * |
| 342 | * Allocates memory for queues are registers them with FW. |
| 343 | */ |
| 344 | int |
| 345 | csio_config_queues(struct csio_hw *hw) |
| 346 | { |
| 347 | int i, j, idx, k = 0; |
| 348 | int rv; |
| 349 | struct csio_scsi_qset *sqset; |
| 350 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); |
| 351 | struct csio_scsi_qset *orig; |
| 352 | struct csio_scsi_cpu_info *info; |
| 353 | |
| 354 | if (hw->flags & CSIO_HWF_Q_MEM_ALLOCED) |
| 355 | return csio_create_queues(hw); |
| 356 | |
| 357 | /* Calculate number of SCSI queues for MSIX we would like */ |
| 358 | hw->num_scsi_msix_cpus = num_online_cpus(); |
| 359 | hw->num_sqsets = num_online_cpus() * hw->num_pports; |
| 360 | |
| 361 | if (hw->num_sqsets > CSIO_MAX_SCSI_QSETS) { |
| 362 | hw->num_sqsets = CSIO_MAX_SCSI_QSETS; |
| 363 | hw->num_scsi_msix_cpus = CSIO_MAX_SCSI_CPU; |
| 364 | } |
| 365 | |
| 366 | /* Initialize max_cpus, may get reduced during msix allocations */ |
| 367 | for (i = 0; i < hw->num_pports; i++) |
| 368 | hw->scsi_cpu_info[i].max_cpus = hw->num_scsi_msix_cpus; |
| 369 | |
| 370 | csio_dbg(hw, "nsqsets:%d scpus:%d\n", |
| 371 | hw->num_sqsets, hw->num_scsi_msix_cpus); |
| 372 | |
| 373 | csio_intr_enable(hw); |
| 374 | |
| 375 | if (hw->intr_mode != CSIO_IM_MSIX) { |
| 376 | |
| 377 | /* Allocate Forward interrupt iq. */ |
| 378 | hw->intr_iq_idx = csio_wr_alloc_q(hw, CSIO_INTR_IQSIZE, |
| 379 | CSIO_INTR_WRSIZE, CSIO_INGRESS, |
| 380 | (void *)hw, 0, 0, NULL); |
| 381 | if (hw->intr_iq_idx == -1) { |
| 382 | csio_err(hw, |
| 383 | "Forward interrupt queue creation failed\n"); |
| 384 | goto intr_disable; |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | /* Allocate the FW evt queue */ |
| 389 | hw->fwevt_iq_idx = csio_wr_alloc_q(hw, CSIO_FWEVT_IQSIZE, |
| 390 | CSIO_FWEVT_WRSIZE, |
| 391 | CSIO_INGRESS, (void *)hw, |
| 392 | CSIO_FWEVT_FLBUFS, 0, |
| 393 | csio_fwevt_intx_handler); |
| 394 | if (hw->fwevt_iq_idx == -1) { |
| 395 | csio_err(hw, "FW evt queue creation failed\n"); |
| 396 | goto intr_disable; |
| 397 | } |
| 398 | |
| 399 | /* Allocate the mgmt queue */ |
| 400 | mgmtm->eq_idx = csio_wr_alloc_q(hw, CSIO_MGMT_EQSIZE, |
| 401 | CSIO_MGMT_EQ_WRSIZE, |
| 402 | CSIO_EGRESS, (void *)hw, 0, 0, NULL); |
| 403 | if (mgmtm->eq_idx == -1) { |
| 404 | csio_err(hw, "Failed to alloc egress queue for mgmt module\n"); |
| 405 | goto intr_disable; |
| 406 | } |
| 407 | |
| 408 | /* Use FW IQ for MGMT req completion */ |
| 409 | mgmtm->iq_idx = hw->fwevt_iq_idx; |
| 410 | |
| 411 | /* Allocate SCSI queues */ |
| 412 | for (i = 0; i < hw->num_pports; i++) { |
| 413 | info = &hw->scsi_cpu_info[i]; |
| 414 | |
| 415 | for (j = 0; j < hw->num_scsi_msix_cpus; j++) { |
| 416 | sqset = &hw->sqset[i][j]; |
| 417 | |
| 418 | if (j >= info->max_cpus) { |
| 419 | k = j % info->max_cpus; |
| 420 | orig = &hw->sqset[i][k]; |
| 421 | sqset->eq_idx = orig->eq_idx; |
| 422 | sqset->iq_idx = orig->iq_idx; |
| 423 | continue; |
| 424 | } |
| 425 | |
| 426 | idx = csio_wr_alloc_q(hw, csio_scsi_eqsize, 0, |
| 427 | CSIO_EGRESS, (void *)hw, 0, 0, |
| 428 | NULL); |
| 429 | if (idx == -1) { |
| 430 | csio_err(hw, "EQ creation failed for idx:%d\n", |
| 431 | idx); |
| 432 | goto intr_disable; |
| 433 | } |
| 434 | |
| 435 | sqset->eq_idx = idx; |
| 436 | |
| 437 | idx = csio_wr_alloc_q(hw, CSIO_SCSI_IQSIZE, |
| 438 | CSIO_SCSI_IQ_WRSZ, CSIO_INGRESS, |
| 439 | (void *)hw, 0, 0, |
| 440 | csio_scsi_intx_handler); |
| 441 | if (idx == -1) { |
| 442 | csio_err(hw, "IQ creation failed for idx:%d\n", |
| 443 | idx); |
| 444 | goto intr_disable; |
| 445 | } |
| 446 | sqset->iq_idx = idx; |
| 447 | } /* for all CPUs */ |
| 448 | } /* For all ports */ |
| 449 | |
| 450 | hw->flags |= CSIO_HWF_Q_MEM_ALLOCED; |
| 451 | |
| 452 | rv = csio_create_queues(hw); |
| 453 | if (rv != 0) |
| 454 | goto intr_disable; |
| 455 | |
| 456 | /* |
| 457 | * Now request IRQs for the vectors. In the event of a failure, |
| 458 | * cleanup is handled internally by this function. |
| 459 | */ |
| 460 | rv = csio_request_irqs(hw); |
| 461 | if (rv != 0) |
| 462 | return -EINVAL; |
| 463 | |
| 464 | return 0; |
| 465 | |
| 466 | intr_disable: |
| 467 | csio_intr_disable(hw, false); |
| 468 | |
| 469 | return -EINVAL; |
| 470 | } |
| 471 | |
| 472 | static int |
| 473 | csio_resource_alloc(struct csio_hw *hw) |
| 474 | { |
| 475 | struct csio_wrm *wrm = csio_hw_to_wrm(hw); |
| 476 | int rv = -ENOMEM; |
| 477 | |
| 478 | wrm->num_q = ((CSIO_MAX_SCSI_QSETS * 2) + CSIO_HW_NIQ + |
| 479 | CSIO_HW_NEQ + CSIO_HW_NFLQ + CSIO_HW_NINTXQ); |
| 480 | |
| 481 | hw->mb_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, |
| 482 | sizeof(struct csio_mb)); |
| 483 | if (!hw->mb_mempool) |
| 484 | goto err; |
| 485 | |
| 486 | hw->rnode_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, |
| 487 | sizeof(struct csio_rnode)); |
| 488 | if (!hw->rnode_mempool) |
| 489 | goto err_free_mb_mempool; |
| 490 | |
| 491 | hw->scsi_pci_pool = pci_pool_create("csio_scsi_pci_pool", hw->pdev, |
| 492 | CSIO_SCSI_RSP_LEN, 8, 0); |
| 493 | if (!hw->scsi_pci_pool) |
| 494 | goto err_free_rn_pool; |
| 495 | |
| 496 | return 0; |
| 497 | |
| 498 | err_free_rn_pool: |
| 499 | mempool_destroy(hw->rnode_mempool); |
| 500 | hw->rnode_mempool = NULL; |
| 501 | err_free_mb_mempool: |
| 502 | mempool_destroy(hw->mb_mempool); |
| 503 | hw->mb_mempool = NULL; |
| 504 | err: |
| 505 | return rv; |
| 506 | } |
| 507 | |
| 508 | static void |
| 509 | csio_resource_free(struct csio_hw *hw) |
| 510 | { |
| 511 | pci_pool_destroy(hw->scsi_pci_pool); |
| 512 | hw->scsi_pci_pool = NULL; |
| 513 | mempool_destroy(hw->rnode_mempool); |
| 514 | hw->rnode_mempool = NULL; |
| 515 | mempool_destroy(hw->mb_mempool); |
| 516 | hw->mb_mempool = NULL; |
| 517 | } |
| 518 | |
| 519 | /* |
| 520 | * csio_hw_alloc - Allocate and initialize the HW module. |
| 521 | * @pdev: PCI device. |
| 522 | * |
| 523 | * Allocates HW structure, DMA, memory resources, maps BARS to |
| 524 | * host memory and initializes HW module. |
| 525 | */ |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 526 | static struct csio_hw *csio_hw_alloc(struct pci_dev *pdev) |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 527 | { |
| 528 | struct csio_hw *hw; |
| 529 | |
| 530 | hw = kzalloc(sizeof(struct csio_hw), GFP_KERNEL); |
| 531 | if (!hw) |
| 532 | goto err; |
| 533 | |
| 534 | hw->pdev = pdev; |
| 535 | strncpy(hw->drv_version, CSIO_DRV_VERSION, 32); |
| 536 | |
| 537 | /* memory pool/DMA pool allocation */ |
| 538 | if (csio_resource_alloc(hw)) |
| 539 | goto err_free_hw; |
| 540 | |
| 541 | /* Get the start address of registers from BAR 0 */ |
| 542 | hw->regstart = ioremap_nocache(pci_resource_start(pdev, 0), |
| 543 | pci_resource_len(pdev, 0)); |
| 544 | if (!hw->regstart) { |
| 545 | csio_err(hw, "Could not map BAR 0, regstart = %p\n", |
| 546 | hw->regstart); |
| 547 | goto err_resource_free; |
| 548 | } |
| 549 | |
| 550 | csio_hw_init_workers(hw); |
| 551 | |
| 552 | if (csio_hw_init(hw)) |
| 553 | goto err_unmap_bar; |
| 554 | |
| 555 | csio_dfs_create(hw); |
| 556 | |
| 557 | csio_dbg(hw, "hw:%p\n", hw); |
| 558 | |
| 559 | return hw; |
| 560 | |
| 561 | err_unmap_bar: |
| 562 | csio_hw_exit_workers(hw); |
| 563 | iounmap(hw->regstart); |
| 564 | err_resource_free: |
| 565 | csio_resource_free(hw); |
| 566 | err_free_hw: |
| 567 | kfree(hw); |
| 568 | err: |
| 569 | return NULL; |
| 570 | } |
| 571 | |
| 572 | /* |
| 573 | * csio_hw_free - Uninitialize and free the HW module. |
| 574 | * @hw: The HW module |
| 575 | * |
| 576 | * Disable interrupts, uninit the HW module, free resources, free hw. |
| 577 | */ |
| 578 | static void |
| 579 | csio_hw_free(struct csio_hw *hw) |
| 580 | { |
| 581 | csio_intr_disable(hw, true); |
| 582 | csio_hw_exit_workers(hw); |
| 583 | csio_hw_exit(hw); |
| 584 | iounmap(hw->regstart); |
| 585 | csio_dfs_destroy(hw); |
| 586 | csio_resource_free(hw); |
| 587 | kfree(hw); |
| 588 | } |
| 589 | |
| 590 | /** |
| 591 | * csio_shost_init - Create and initialize the lnode module. |
| 592 | * @hw: The HW module. |
| 593 | * @dev: The device associated with this invocation. |
| 594 | * @probe: Called from probe context or not? |
| 595 | * @os_pln: Parent lnode if any. |
| 596 | * |
| 597 | * Allocates lnode structure via scsi_host_alloc, initializes |
| 598 | * shost, initializes lnode module and registers with SCSI ML |
| 599 | * via scsi_host_add. This function is shared between physical and |
| 600 | * virtual node ports. |
| 601 | */ |
| 602 | struct csio_lnode * |
| 603 | csio_shost_init(struct csio_hw *hw, struct device *dev, |
| 604 | bool probe, struct csio_lnode *pln) |
| 605 | { |
| 606 | struct Scsi_Host *shost = NULL; |
| 607 | struct csio_lnode *ln; |
| 608 | |
| 609 | csio_fcoe_shost_template.cmd_per_lun = csio_lun_qdepth; |
| 610 | csio_fcoe_shost_vport_template.cmd_per_lun = csio_lun_qdepth; |
| 611 | |
| 612 | /* |
| 613 | * hw->pdev is the physical port's PCI dev structure, |
| 614 | * which will be different from the NPIV dev structure. |
| 615 | */ |
| 616 | if (dev == &hw->pdev->dev) |
| 617 | shost = scsi_host_alloc( |
| 618 | &csio_fcoe_shost_template, |
| 619 | sizeof(struct csio_lnode)); |
| 620 | else |
| 621 | shost = scsi_host_alloc( |
| 622 | &csio_fcoe_shost_vport_template, |
| 623 | sizeof(struct csio_lnode)); |
| 624 | |
| 625 | if (!shost) |
| 626 | goto err; |
| 627 | |
| 628 | ln = shost_priv(shost); |
| 629 | memset(ln, 0, sizeof(struct csio_lnode)); |
| 630 | |
| 631 | /* Link common lnode to this lnode */ |
| 632 | ln->dev_num = (shost->host_no << 16); |
| 633 | |
| 634 | shost->can_queue = CSIO_MAX_QUEUE; |
| 635 | shost->this_id = -1; |
| 636 | shost->unique_id = shost->host_no; |
| 637 | shost->max_cmd_len = 16; /* Max CDB length supported */ |
| 638 | shost->max_id = min_t(uint32_t, csio_fcoe_rnodes, |
| 639 | hw->fres_info.max_ssns); |
| 640 | shost->max_lun = CSIO_MAX_LUN; |
| 641 | if (dev == &hw->pdev->dev) |
| 642 | shost->transportt = csio_fcoe_transport; |
| 643 | else |
| 644 | shost->transportt = csio_fcoe_transport_vport; |
| 645 | |
| 646 | /* root lnode */ |
| 647 | if (!hw->rln) |
| 648 | hw->rln = ln; |
| 649 | |
| 650 | /* Other initialization here: Common, Transport specific */ |
| 651 | if (csio_lnode_init(ln, hw, pln)) |
| 652 | goto err_shost_put; |
| 653 | |
| 654 | if (scsi_add_host(shost, dev)) |
| 655 | goto err_lnode_exit; |
| 656 | |
| 657 | return ln; |
| 658 | |
| 659 | err_lnode_exit: |
| 660 | csio_lnode_exit(ln); |
| 661 | err_shost_put: |
| 662 | scsi_host_put(shost); |
| 663 | err: |
| 664 | return NULL; |
| 665 | } |
| 666 | |
| 667 | /** |
| 668 | * csio_shost_exit - De-instantiate the shost. |
| 669 | * @ln: The lnode module corresponding to the shost. |
| 670 | * |
| 671 | */ |
| 672 | void |
| 673 | csio_shost_exit(struct csio_lnode *ln) |
| 674 | { |
| 675 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
| 676 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
| 677 | |
| 678 | /* Inform transport */ |
| 679 | fc_remove_host(shost); |
| 680 | |
| 681 | /* Inform SCSI ML */ |
| 682 | scsi_remove_host(shost); |
| 683 | |
| 684 | /* Flush all the events, so that any rnode removal events |
| 685 | * already queued are all handled, before we remove the lnode. |
| 686 | */ |
| 687 | spin_lock_irq(&hw->lock); |
| 688 | csio_evtq_flush(hw); |
| 689 | spin_unlock_irq(&hw->lock); |
| 690 | |
| 691 | csio_lnode_exit(ln); |
| 692 | scsi_host_put(shost); |
| 693 | } |
| 694 | |
| 695 | struct csio_lnode * |
| 696 | csio_lnode_alloc(struct csio_hw *hw) |
| 697 | { |
| 698 | return csio_shost_init(hw, &hw->pdev->dev, false, NULL); |
| 699 | } |
| 700 | |
| 701 | void |
| 702 | csio_lnodes_block_request(struct csio_hw *hw) |
| 703 | { |
| 704 | struct Scsi_Host *shost; |
| 705 | struct csio_lnode *sln; |
| 706 | struct csio_lnode *ln; |
| 707 | struct list_head *cur_ln, *cur_cln; |
| 708 | struct csio_lnode **lnode_list; |
| 709 | int cur_cnt = 0, ii; |
| 710 | |
| 711 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), |
| 712 | GFP_KERNEL); |
| 713 | if (!lnode_list) { |
| 714 | csio_err(hw, "Failed to allocate lnodes_list"); |
| 715 | return; |
| 716 | } |
| 717 | |
| 718 | spin_lock_irq(&hw->lock); |
| 719 | /* Traverse sibling lnodes */ |
| 720 | list_for_each(cur_ln, &hw->sln_head) { |
| 721 | sln = (struct csio_lnode *) cur_ln; |
| 722 | lnode_list[cur_cnt++] = sln; |
| 723 | |
| 724 | /* Traverse children lnodes */ |
| 725 | list_for_each(cur_cln, &sln->cln_head) |
| 726 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
| 727 | } |
| 728 | spin_unlock_irq(&hw->lock); |
| 729 | |
| 730 | for (ii = 0; ii < cur_cnt; ii++) { |
| 731 | csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]); |
| 732 | ln = lnode_list[ii]; |
| 733 | shost = csio_ln_to_shost(ln); |
| 734 | scsi_block_requests(shost); |
| 735 | |
| 736 | } |
| 737 | kfree(lnode_list); |
| 738 | } |
| 739 | |
| 740 | void |
| 741 | csio_lnodes_unblock_request(struct csio_hw *hw) |
| 742 | { |
| 743 | struct csio_lnode *ln; |
| 744 | struct Scsi_Host *shost; |
| 745 | struct csio_lnode *sln; |
| 746 | struct list_head *cur_ln, *cur_cln; |
| 747 | struct csio_lnode **lnode_list; |
| 748 | int cur_cnt = 0, ii; |
| 749 | |
| 750 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), |
| 751 | GFP_KERNEL); |
| 752 | if (!lnode_list) { |
| 753 | csio_err(hw, "Failed to allocate lnodes_list"); |
| 754 | return; |
| 755 | } |
| 756 | |
| 757 | spin_lock_irq(&hw->lock); |
| 758 | /* Traverse sibling lnodes */ |
| 759 | list_for_each(cur_ln, &hw->sln_head) { |
| 760 | sln = (struct csio_lnode *) cur_ln; |
| 761 | lnode_list[cur_cnt++] = sln; |
| 762 | |
| 763 | /* Traverse children lnodes */ |
| 764 | list_for_each(cur_cln, &sln->cln_head) |
| 765 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
| 766 | } |
| 767 | spin_unlock_irq(&hw->lock); |
| 768 | |
| 769 | for (ii = 0; ii < cur_cnt; ii++) { |
| 770 | csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]); |
| 771 | ln = lnode_list[ii]; |
| 772 | shost = csio_ln_to_shost(ln); |
| 773 | scsi_unblock_requests(shost); |
| 774 | } |
| 775 | kfree(lnode_list); |
| 776 | } |
| 777 | |
| 778 | void |
| 779 | csio_lnodes_block_by_port(struct csio_hw *hw, uint8_t portid) |
| 780 | { |
| 781 | struct csio_lnode *ln; |
| 782 | struct Scsi_Host *shost; |
| 783 | struct csio_lnode *sln; |
| 784 | struct list_head *cur_ln, *cur_cln; |
| 785 | struct csio_lnode **lnode_list; |
| 786 | int cur_cnt = 0, ii; |
| 787 | |
| 788 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), |
| 789 | GFP_KERNEL); |
| 790 | if (!lnode_list) { |
| 791 | csio_err(hw, "Failed to allocate lnodes_list"); |
| 792 | return; |
| 793 | } |
| 794 | |
| 795 | spin_lock_irq(&hw->lock); |
| 796 | /* Traverse sibling lnodes */ |
| 797 | list_for_each(cur_ln, &hw->sln_head) { |
| 798 | sln = (struct csio_lnode *) cur_ln; |
| 799 | if (sln->portid != portid) |
| 800 | continue; |
| 801 | |
| 802 | lnode_list[cur_cnt++] = sln; |
| 803 | |
| 804 | /* Traverse children lnodes */ |
| 805 | list_for_each(cur_cln, &sln->cln_head) |
| 806 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
| 807 | } |
| 808 | spin_unlock_irq(&hw->lock); |
| 809 | |
| 810 | for (ii = 0; ii < cur_cnt; ii++) { |
| 811 | csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]); |
| 812 | ln = lnode_list[ii]; |
| 813 | shost = csio_ln_to_shost(ln); |
| 814 | scsi_block_requests(shost); |
| 815 | } |
| 816 | kfree(lnode_list); |
| 817 | } |
| 818 | |
| 819 | void |
| 820 | csio_lnodes_unblock_by_port(struct csio_hw *hw, uint8_t portid) |
| 821 | { |
| 822 | struct csio_lnode *ln; |
| 823 | struct Scsi_Host *shost; |
| 824 | struct csio_lnode *sln; |
| 825 | struct list_head *cur_ln, *cur_cln; |
| 826 | struct csio_lnode **lnode_list; |
| 827 | int cur_cnt = 0, ii; |
| 828 | |
| 829 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), |
| 830 | GFP_KERNEL); |
| 831 | if (!lnode_list) { |
| 832 | csio_err(hw, "Failed to allocate lnodes_list"); |
| 833 | return; |
| 834 | } |
| 835 | |
| 836 | spin_lock_irq(&hw->lock); |
| 837 | /* Traverse sibling lnodes */ |
| 838 | list_for_each(cur_ln, &hw->sln_head) { |
| 839 | sln = (struct csio_lnode *) cur_ln; |
| 840 | if (sln->portid != portid) |
| 841 | continue; |
| 842 | lnode_list[cur_cnt++] = sln; |
| 843 | |
| 844 | /* Traverse children lnodes */ |
| 845 | list_for_each(cur_cln, &sln->cln_head) |
| 846 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
| 847 | } |
| 848 | spin_unlock_irq(&hw->lock); |
| 849 | |
| 850 | for (ii = 0; ii < cur_cnt; ii++) { |
| 851 | csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]); |
| 852 | ln = lnode_list[ii]; |
| 853 | shost = csio_ln_to_shost(ln); |
| 854 | scsi_unblock_requests(shost); |
| 855 | } |
| 856 | kfree(lnode_list); |
| 857 | } |
| 858 | |
| 859 | void |
| 860 | csio_lnodes_exit(struct csio_hw *hw, bool npiv) |
| 861 | { |
| 862 | struct csio_lnode *sln; |
| 863 | struct csio_lnode *ln; |
| 864 | struct list_head *cur_ln, *cur_cln; |
| 865 | struct csio_lnode **lnode_list; |
| 866 | int cur_cnt = 0, ii; |
| 867 | |
| 868 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), |
| 869 | GFP_KERNEL); |
| 870 | if (!lnode_list) { |
| 871 | csio_err(hw, "lnodes_exit: Failed to allocate lnodes_list.\n"); |
| 872 | return; |
| 873 | } |
| 874 | |
| 875 | /* Get all child lnodes(NPIV ports) */ |
| 876 | spin_lock_irq(&hw->lock); |
| 877 | list_for_each(cur_ln, &hw->sln_head) { |
| 878 | sln = (struct csio_lnode *) cur_ln; |
| 879 | |
| 880 | /* Traverse children lnodes */ |
| 881 | list_for_each(cur_cln, &sln->cln_head) |
| 882 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
| 883 | } |
| 884 | spin_unlock_irq(&hw->lock); |
| 885 | |
| 886 | /* Delete NPIV lnodes */ |
| 887 | for (ii = 0; ii < cur_cnt; ii++) { |
| 888 | csio_dbg(hw, "Deleting child lnode: %p\n", lnode_list[ii]); |
| 889 | ln = lnode_list[ii]; |
| 890 | fc_vport_terminate(ln->fc_vport); |
| 891 | } |
| 892 | |
| 893 | /* Delete only npiv lnodes */ |
| 894 | if (npiv) |
| 895 | goto free_lnodes; |
| 896 | |
| 897 | cur_cnt = 0; |
| 898 | /* Get all physical lnodes */ |
| 899 | spin_lock_irq(&hw->lock); |
| 900 | /* Traverse sibling lnodes */ |
| 901 | list_for_each(cur_ln, &hw->sln_head) { |
| 902 | sln = (struct csio_lnode *) cur_ln; |
| 903 | lnode_list[cur_cnt++] = sln; |
| 904 | } |
| 905 | spin_unlock_irq(&hw->lock); |
| 906 | |
| 907 | /* Delete physical lnodes */ |
| 908 | for (ii = 0; ii < cur_cnt; ii++) { |
| 909 | csio_dbg(hw, "Deleting parent lnode: %p\n", lnode_list[ii]); |
| 910 | csio_shost_exit(lnode_list[ii]); |
| 911 | } |
| 912 | |
| 913 | free_lnodes: |
| 914 | kfree(lnode_list); |
| 915 | } |
| 916 | |
| 917 | /* |
| 918 | * csio_lnode_init_post: Set lnode attributes after starting HW. |
| 919 | * @ln: lnode. |
| 920 | * |
| 921 | */ |
| 922 | static void |
| 923 | csio_lnode_init_post(struct csio_lnode *ln) |
| 924 | { |
| 925 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
| 926 | |
| 927 | csio_fchost_attr_init(ln); |
| 928 | |
| 929 | scsi_scan_host(shost); |
| 930 | } |
| 931 | |
| 932 | /* |
| 933 | * csio_probe_one - Instantiate this function. |
| 934 | * @pdev: PCI device |
| 935 | * @id: Device ID |
| 936 | * |
| 937 | * This is the .probe() callback of the driver. This function: |
| 938 | * - Initializes the PCI function by enabling MMIO, setting bus |
| 939 | * mastership and setting DMA mask. |
| 940 | * - Allocates HW structure, DMA, memory resources, maps BARS to |
| 941 | * host memory and initializes HW module. |
| 942 | * - Allocates lnode structure via scsi_host_alloc, initializes |
| 943 | * shost, initialized lnode module and registers with SCSI ML |
| 944 | * via scsi_host_add. |
| 945 | * - Enables interrupts, and starts the chip by kicking off the |
| 946 | * HW state machine. |
| 947 | * - Once hardware is ready, initiated scan of the host via |
| 948 | * scsi_scan_host. |
| 949 | */ |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 950 | static int csio_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 951 | { |
| 952 | int rv; |
| 953 | int bars; |
| 954 | int i; |
| 955 | struct csio_hw *hw; |
| 956 | struct csio_lnode *ln; |
| 957 | |
| 958 | rv = csio_pci_init(pdev, &bars); |
| 959 | if (rv) |
| 960 | goto err; |
| 961 | |
| 962 | hw = csio_hw_alloc(pdev); |
| 963 | if (!hw) { |
| 964 | rv = -ENODEV; |
| 965 | goto err_pci_exit; |
| 966 | } |
| 967 | |
| 968 | pci_set_drvdata(pdev, hw); |
| 969 | |
| 970 | if (csio_hw_start(hw) != 0) { |
| 971 | dev_err(&pdev->dev, |
| 972 | "Failed to start FW, continuing in debug mode.\n"); |
| 973 | return 0; |
| 974 | } |
| 975 | |
| 976 | sprintf(hw->fwrev_str, "%u.%u.%u.%u\n", |
| 977 | FW_HDR_FW_VER_MAJOR_GET(hw->fwrev), |
| 978 | FW_HDR_FW_VER_MINOR_GET(hw->fwrev), |
| 979 | FW_HDR_FW_VER_MICRO_GET(hw->fwrev), |
| 980 | FW_HDR_FW_VER_BUILD_GET(hw->fwrev)); |
| 981 | |
| 982 | for (i = 0; i < hw->num_pports; i++) { |
| 983 | ln = csio_shost_init(hw, &pdev->dev, true, NULL); |
| 984 | if (!ln) { |
| 985 | rv = -ENODEV; |
| 986 | break; |
| 987 | } |
| 988 | /* Initialize portid */ |
| 989 | ln->portid = hw->pport[i].portid; |
| 990 | |
| 991 | spin_lock_irq(&hw->lock); |
| 992 | if (csio_lnode_start(ln) != 0) |
| 993 | rv = -ENODEV; |
| 994 | spin_unlock_irq(&hw->lock); |
| 995 | |
| 996 | if (rv) |
| 997 | break; |
| 998 | |
| 999 | csio_lnode_init_post(ln); |
| 1000 | } |
| 1001 | |
| 1002 | if (rv) |
| 1003 | goto err_lnode_exit; |
| 1004 | |
| 1005 | return 0; |
| 1006 | |
| 1007 | err_lnode_exit: |
| 1008 | csio_lnodes_block_request(hw); |
| 1009 | spin_lock_irq(&hw->lock); |
| 1010 | csio_hw_stop(hw); |
| 1011 | spin_unlock_irq(&hw->lock); |
| 1012 | csio_lnodes_unblock_request(hw); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 1013 | csio_lnodes_exit(hw, 0); |
| 1014 | csio_hw_free(hw); |
| 1015 | err_pci_exit: |
| 1016 | csio_pci_exit(pdev, &bars); |
| 1017 | err: |
| 1018 | dev_err(&pdev->dev, "probe of device failed: %d\n", rv); |
| 1019 | return rv; |
| 1020 | } |
| 1021 | |
| 1022 | /* |
| 1023 | * csio_remove_one - Remove one instance of the driver at this PCI function. |
| 1024 | * @pdev: PCI device |
| 1025 | * |
| 1026 | * Used during hotplug operation. |
| 1027 | */ |
Greg Kroah-Hartman | 6f03979 | 2012-12-21 13:08:55 -0800 | [diff] [blame] | 1028 | static void csio_remove_one(struct pci_dev *pdev) |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 1029 | { |
| 1030 | struct csio_hw *hw = pci_get_drvdata(pdev); |
| 1031 | int bars = pci_select_bars(pdev, IORESOURCE_MEM); |
| 1032 | |
| 1033 | csio_lnodes_block_request(hw); |
| 1034 | spin_lock_irq(&hw->lock); |
| 1035 | |
| 1036 | /* Stops lnode, Rnode s/m |
| 1037 | * Quiesce IOs. |
| 1038 | * All sessions with remote ports are unregistered. |
| 1039 | */ |
| 1040 | csio_hw_stop(hw); |
| 1041 | spin_unlock_irq(&hw->lock); |
| 1042 | csio_lnodes_unblock_request(hw); |
| 1043 | |
| 1044 | csio_lnodes_exit(hw, 0); |
| 1045 | csio_hw_free(hw); |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 1046 | csio_pci_exit(pdev, &bars); |
| 1047 | } |
| 1048 | |
| 1049 | /* |
| 1050 | * csio_pci_error_detected - PCI error was detected |
| 1051 | * @pdev: PCI device |
| 1052 | * |
| 1053 | */ |
| 1054 | static pci_ers_result_t |
| 1055 | csio_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) |
| 1056 | { |
| 1057 | struct csio_hw *hw = pci_get_drvdata(pdev); |
| 1058 | |
| 1059 | csio_lnodes_block_request(hw); |
| 1060 | spin_lock_irq(&hw->lock); |
| 1061 | |
| 1062 | /* Post PCI error detected evt to HW s/m |
| 1063 | * HW s/m handles this evt by quiescing IOs, unregisters rports |
| 1064 | * and finally takes the device to offline. |
| 1065 | */ |
| 1066 | csio_post_event(&hw->sm, CSIO_HWE_PCIERR_DETECTED); |
| 1067 | spin_unlock_irq(&hw->lock); |
| 1068 | csio_lnodes_unblock_request(hw); |
| 1069 | csio_lnodes_exit(hw, 0); |
| 1070 | csio_intr_disable(hw, true); |
| 1071 | pci_disable_device(pdev); |
| 1072 | return state == pci_channel_io_perm_failure ? |
| 1073 | PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET; |
| 1074 | } |
| 1075 | |
| 1076 | /* |
| 1077 | * csio_pci_slot_reset - PCI slot has been reset. |
| 1078 | * @pdev: PCI device |
| 1079 | * |
| 1080 | */ |
| 1081 | static pci_ers_result_t |
| 1082 | csio_pci_slot_reset(struct pci_dev *pdev) |
| 1083 | { |
| 1084 | struct csio_hw *hw = pci_get_drvdata(pdev); |
| 1085 | int ready; |
| 1086 | |
| 1087 | if (pci_enable_device(pdev)) { |
| 1088 | dev_err(&pdev->dev, "cannot re-enable device in slot reset\n"); |
| 1089 | return PCI_ERS_RESULT_DISCONNECT; |
| 1090 | } |
| 1091 | |
| 1092 | pci_set_master(pdev); |
| 1093 | pci_restore_state(pdev); |
| 1094 | pci_save_state(pdev); |
| 1095 | pci_cleanup_aer_uncorrect_error_status(pdev); |
| 1096 | |
| 1097 | /* Bring HW s/m to ready state. |
| 1098 | * but don't resume IOs. |
| 1099 | */ |
| 1100 | spin_lock_irq(&hw->lock); |
| 1101 | csio_post_event(&hw->sm, CSIO_HWE_PCIERR_SLOT_RESET); |
| 1102 | ready = csio_is_hw_ready(hw); |
| 1103 | spin_unlock_irq(&hw->lock); |
| 1104 | |
| 1105 | if (ready) { |
| 1106 | return PCI_ERS_RESULT_RECOVERED; |
| 1107 | } else { |
| 1108 | dev_err(&pdev->dev, "Can't initialize HW when in slot reset\n"); |
| 1109 | return PCI_ERS_RESULT_DISCONNECT; |
| 1110 | } |
| 1111 | } |
| 1112 | |
| 1113 | /* |
| 1114 | * csio_pci_resume - Resume normal operations |
| 1115 | * @pdev: PCI device |
| 1116 | * |
| 1117 | */ |
| 1118 | static void |
| 1119 | csio_pci_resume(struct pci_dev *pdev) |
| 1120 | { |
| 1121 | struct csio_hw *hw = pci_get_drvdata(pdev); |
| 1122 | struct csio_lnode *ln; |
| 1123 | int rv = 0; |
| 1124 | int i; |
| 1125 | |
| 1126 | /* Bring the LINK UP and Resume IO */ |
| 1127 | |
| 1128 | for (i = 0; i < hw->num_pports; i++) { |
| 1129 | ln = csio_shost_init(hw, &pdev->dev, true, NULL); |
| 1130 | if (!ln) { |
| 1131 | rv = -ENODEV; |
| 1132 | break; |
| 1133 | } |
| 1134 | /* Initialize portid */ |
| 1135 | ln->portid = hw->pport[i].portid; |
| 1136 | |
| 1137 | spin_lock_irq(&hw->lock); |
| 1138 | if (csio_lnode_start(ln) != 0) |
| 1139 | rv = -ENODEV; |
| 1140 | spin_unlock_irq(&hw->lock); |
| 1141 | |
| 1142 | if (rv) |
| 1143 | break; |
| 1144 | |
| 1145 | csio_lnode_init_post(ln); |
| 1146 | } |
| 1147 | |
| 1148 | if (rv) |
| 1149 | goto err_resume_exit; |
| 1150 | |
| 1151 | return; |
| 1152 | |
| 1153 | err_resume_exit: |
| 1154 | csio_lnodes_block_request(hw); |
| 1155 | spin_lock_irq(&hw->lock); |
| 1156 | csio_hw_stop(hw); |
| 1157 | spin_unlock_irq(&hw->lock); |
| 1158 | csio_lnodes_unblock_request(hw); |
| 1159 | csio_lnodes_exit(hw, 0); |
| 1160 | csio_hw_free(hw); |
| 1161 | dev_err(&pdev->dev, "resume of device failed: %d\n", rv); |
| 1162 | } |
| 1163 | |
| 1164 | static struct pci_error_handlers csio_err_handler = { |
| 1165 | .error_detected = csio_pci_error_detected, |
| 1166 | .slot_reset = csio_pci_slot_reset, |
| 1167 | .resume = csio_pci_resume, |
| 1168 | }; |
| 1169 | |
Benoit Taine | 9baa3c3 | 2014-08-08 15:56:03 +0200 | [diff] [blame] | 1170 | static const struct pci_device_id csio_pci_tbl[] = { |
Arvind Bhushan | 7cc1638 | 2013-03-14 05:09:08 +0000 | [diff] [blame] | 1171 | CSIO_DEVICE(CSIO_DEVID_T440DBG_FCOE, 0), /* T4 DEBUG FCOE */ |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 1172 | CSIO_DEVICE(CSIO_DEVID_T420CR_FCOE, 0), /* T420CR FCOE */ |
| 1173 | CSIO_DEVICE(CSIO_DEVID_T422CR_FCOE, 0), /* T422CR FCOE */ |
| 1174 | CSIO_DEVICE(CSIO_DEVID_T440CR_FCOE, 0), /* T440CR FCOE */ |
| 1175 | CSIO_DEVICE(CSIO_DEVID_T420BCH_FCOE, 0), /* T420BCH FCOE */ |
| 1176 | CSIO_DEVICE(CSIO_DEVID_T440BCH_FCOE, 0), /* T440BCH FCOE */ |
| 1177 | CSIO_DEVICE(CSIO_DEVID_T440CH_FCOE, 0), /* T440CH FCOE */ |
| 1178 | CSIO_DEVICE(CSIO_DEVID_T420SO_FCOE, 0), /* T420SO FCOE */ |
| 1179 | CSIO_DEVICE(CSIO_DEVID_T420CX_FCOE, 0), /* T420CX FCOE */ |
| 1180 | CSIO_DEVICE(CSIO_DEVID_T420BT_FCOE, 0), /* T420BT FCOE */ |
| 1181 | CSIO_DEVICE(CSIO_DEVID_T404BT_FCOE, 0), /* T404BT FCOE */ |
| 1182 | CSIO_DEVICE(CSIO_DEVID_B420_FCOE, 0), /* B420 FCOE */ |
| 1183 | CSIO_DEVICE(CSIO_DEVID_B404_FCOE, 0), /* B404 FCOE */ |
| 1184 | CSIO_DEVICE(CSIO_DEVID_T480CR_FCOE, 0), /* T480 CR FCOE */ |
| 1185 | CSIO_DEVICE(CSIO_DEVID_T440LPCR_FCOE, 0), /* T440 LP-CR FCOE */ |
Arvind Bhushan | 7cc1638 | 2013-03-14 05:09:08 +0000 | [diff] [blame] | 1186 | CSIO_DEVICE(CSIO_DEVID_AMSTERDAM_T4_FCOE, 0), /* AMSTERDAM T4 FCOE */ |
| 1187 | CSIO_DEVICE(CSIO_DEVID_HUAWEI_T480_FCOE, 0), /* HUAWEI T480 FCOE */ |
| 1188 | CSIO_DEVICE(CSIO_DEVID_HUAWEI_T440_FCOE, 0), /* HUAWEI T440 FCOE */ |
| 1189 | CSIO_DEVICE(CSIO_DEVID_HUAWEI_STG310_FCOE, 0), /* HUAWEI STG FCOE */ |
| 1190 | CSIO_DEVICE(CSIO_DEVID_ACROMAG_XMC_XAUI, 0), /* ACROMAG XAUI FCOE */ |
| 1191 | CSIO_DEVICE(CSIO_DEVID_QUANTA_MEZZ_SFP_FCOE, 0),/* QUANTA MEZZ FCOE */ |
| 1192 | CSIO_DEVICE(CSIO_DEVID_HUAWEI_10GT_FCOE, 0), /* HUAWEI 10GT FCOE */ |
| 1193 | CSIO_DEVICE(CSIO_DEVID_HUAWEI_T440_TOE_FCOE, 0),/* HUAWEI T4 TOE FCOE */ |
| 1194 | CSIO_DEVICE(CSIO_DEVID_T580DBG_FCOE, 0), /* T5 DEBUG FCOE */ |
| 1195 | CSIO_DEVICE(CSIO_DEVID_T520CR_FCOE, 0), /* T520CR FCOE */ |
| 1196 | CSIO_DEVICE(CSIO_DEVID_T522CR_FCOE, 0), /* T522CR FCOE */ |
| 1197 | CSIO_DEVICE(CSIO_DEVID_T540CR_FCOE, 0), /* T540CR FCOE */ |
| 1198 | CSIO_DEVICE(CSIO_DEVID_T520BCH_FCOE, 0), /* T520BCH FCOE */ |
| 1199 | CSIO_DEVICE(CSIO_DEVID_T540BCH_FCOE, 0), /* T540BCH FCOE */ |
| 1200 | CSIO_DEVICE(CSIO_DEVID_T540CH_FCOE, 0), /* T540CH FCOE */ |
| 1201 | CSIO_DEVICE(CSIO_DEVID_T520SO_FCOE, 0), /* T520SO FCOE */ |
| 1202 | CSIO_DEVICE(CSIO_DEVID_T520CX_FCOE, 0), /* T520CX FCOE */ |
| 1203 | CSIO_DEVICE(CSIO_DEVID_T520BT_FCOE, 0), /* T520BT FCOE */ |
| 1204 | CSIO_DEVICE(CSIO_DEVID_T504BT_FCOE, 0), /* T504BT FCOE */ |
| 1205 | CSIO_DEVICE(CSIO_DEVID_B520_FCOE, 0), /* B520 FCOE */ |
| 1206 | CSIO_DEVICE(CSIO_DEVID_B504_FCOE, 0), /* B504 FCOE */ |
| 1207 | CSIO_DEVICE(CSIO_DEVID_T580CR2_FCOE, 0), /* T580 CR FCOE */ |
| 1208 | CSIO_DEVICE(CSIO_DEVID_T540LPCR_FCOE, 0), /* T540 LP-CR FCOE */ |
| 1209 | CSIO_DEVICE(CSIO_DEVID_AMSTERDAM_T5_FCOE, 0), /* AMSTERDAM T5 FCOE */ |
| 1210 | CSIO_DEVICE(CSIO_DEVID_T580LPCR_FCOE, 0), /* T580 LP-CR FCOE */ |
| 1211 | CSIO_DEVICE(CSIO_DEVID_T520LLCR_FCOE, 0), /* T520 LL-CR FCOE */ |
| 1212 | CSIO_DEVICE(CSIO_DEVID_T560CR_FCOE, 0), /* T560 CR FCOE */ |
| 1213 | CSIO_DEVICE(CSIO_DEVID_T580CR_FCOE, 0), /* T580 CR FCOE */ |
Naresh Kumar Inna | a3667aa | 2012-11-15 22:41:18 +0530 | [diff] [blame] | 1214 | { 0, 0, 0, 0, 0, 0, 0 } |
| 1215 | }; |
| 1216 | |
| 1217 | |
| 1218 | static struct pci_driver csio_pci_driver = { |
| 1219 | .name = KBUILD_MODNAME, |
| 1220 | .driver = { |
| 1221 | .owner = THIS_MODULE, |
| 1222 | }, |
| 1223 | .id_table = csio_pci_tbl, |
| 1224 | .probe = csio_probe_one, |
| 1225 | .remove = csio_remove_one, |
| 1226 | .err_handler = &csio_err_handler, |
| 1227 | }; |
| 1228 | |
| 1229 | /* |
| 1230 | * csio_init - Chelsio storage driver initialization function. |
| 1231 | * |
| 1232 | */ |
| 1233 | static int __init |
| 1234 | csio_init(void) |
| 1235 | { |
| 1236 | int rv = -ENOMEM; |
| 1237 | |
| 1238 | pr_info("%s %s\n", CSIO_DRV_DESC, CSIO_DRV_VERSION); |
| 1239 | |
| 1240 | csio_dfs_init(); |
| 1241 | |
| 1242 | csio_fcoe_transport = fc_attach_transport(&csio_fc_transport_funcs); |
| 1243 | if (!csio_fcoe_transport) |
| 1244 | goto err; |
| 1245 | |
| 1246 | csio_fcoe_transport_vport = |
| 1247 | fc_attach_transport(&csio_fc_transport_vport_funcs); |
| 1248 | if (!csio_fcoe_transport_vport) |
| 1249 | goto err_vport; |
| 1250 | |
| 1251 | rv = pci_register_driver(&csio_pci_driver); |
| 1252 | if (rv) |
| 1253 | goto err_pci; |
| 1254 | |
| 1255 | return 0; |
| 1256 | |
| 1257 | err_pci: |
| 1258 | fc_release_transport(csio_fcoe_transport_vport); |
| 1259 | err_vport: |
| 1260 | fc_release_transport(csio_fcoe_transport); |
| 1261 | err: |
| 1262 | csio_dfs_exit(); |
| 1263 | return rv; |
| 1264 | } |
| 1265 | |
| 1266 | /* |
| 1267 | * csio_exit - Chelsio storage driver uninitialization . |
| 1268 | * |
| 1269 | * Function that gets called in the unload path. |
| 1270 | */ |
| 1271 | static void __exit |
| 1272 | csio_exit(void) |
| 1273 | { |
| 1274 | pci_unregister_driver(&csio_pci_driver); |
| 1275 | csio_dfs_exit(); |
| 1276 | fc_release_transport(csio_fcoe_transport_vport); |
| 1277 | fc_release_transport(csio_fcoe_transport); |
| 1278 | } |
| 1279 | |
| 1280 | module_init(csio_init); |
| 1281 | module_exit(csio_exit); |
| 1282 | MODULE_AUTHOR(CSIO_DRV_AUTHOR); |
| 1283 | MODULE_DESCRIPTION(CSIO_DRV_DESC); |
| 1284 | MODULE_LICENSE(CSIO_DRV_LICENSE); |
| 1285 | MODULE_DEVICE_TABLE(pci, csio_pci_tbl); |
| 1286 | MODULE_VERSION(CSIO_DRV_VERSION); |
Arvind Bhushan | 7cc1638 | 2013-03-14 05:09:08 +0000 | [diff] [blame] | 1287 | MODULE_FIRMWARE(FW_FNAME_T4); |
| 1288 | MODULE_FIRMWARE(FW_FNAME_T5); |