| 1 | /* |
| 2 | * Copyright 2010-2017 Intel Corporation. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License, version 2, |
| 6 | * as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | * |
| 13 | * Disclaimer: The codes contained in these modules may be specific to |
| 14 | * the Intel Software Development Platform codenamed Knights Ferry, |
| 15 | * and the Intel product codenamed Knights Corner, and are not backward |
| 16 | * compatible with other Intel products. Additionally, Intel will NOT |
| 17 | * support the codes or instruction set in future products. |
| 18 | * |
| 19 | * Intel offers no warranty of any kind regarding the code. This code is |
| 20 | * licensed on an "AS IS" basis and Intel is not obligated to provide |
| 21 | * any support, assistance, installation, training, or other services |
| 22 | * of any kind. Intel is also not obligated to provide any updates, |
| 23 | * enhancements or extensions. Intel specifically disclaims any warranty |
| 24 | * of merchantability, non-infringement, fitness for any particular |
| 25 | * purpose, and any other warranty. |
| 26 | * |
| 27 | * Further, Intel disclaims all liability of any kind, including but |
| 28 | * not limited to liability for infringement of any proprietary rights, |
| 29 | * relating to the use of the code, even if Intel is notified of the |
| 30 | * possibility of such liability. Except as expressly stated in an Intel |
| 31 | * license agreement provided with this code and agreed upon with Intel, |
| 32 | * no license, express or implied, by estoppel or otherwise, to any |
| 33 | * intellectual property rights is granted herein. |
| 34 | */ |
| 35 | |
| 36 | #include <linux/string.h> |
| 37 | |
| 38 | #include "mic/micscif_kmem_cache.h" |
| 39 | #include "micint.h" |
| 40 | #include "mic_common.h" |
| 41 | #include "mic/io_interface.h" |
| 42 | #include "mic/mic_pm.h" |
| 43 | #include "mic/micveth.h" |
| 44 | |
| 45 | MODULE_LICENSE("GPL"); |
| 46 | MODULE_INFO(build_number, BUILD_NUMBER); |
| 47 | MODULE_INFO(build_bywhom, BUILD_BYWHOM); |
| 48 | MODULE_INFO(build_ondate, BUILD_ONDATE); |
| 49 | MODULE_INFO(build_scmver, BUILD_SCMVER); |
| 50 | |
| 51 | #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)) |
| 52 | #include <linux/pm_qos_params.h> |
| 53 | #endif |
| 54 | |
| 55 | struct kmem_cache *unaligned_cache; |
| 56 | mic_lindata_t mic_lindata; |
| 57 | |
| 58 | module_param_named(ulimit, mic_ulimit_check, bool, 0600); |
| 59 | MODULE_PARM_DESC(ulimit, "SCIF ulimit check"); |
| 60 | |
| 61 | module_param_named(reg_cache, mic_reg_cache_enable, bool, 0600); |
| 62 | MODULE_PARM_DESC(reg_cache, "SCIF registration caching"); |
| 63 | |
| 64 | module_param_named(huge_page, mic_huge_page_enable, bool, 0600); |
| 65 | MODULE_PARM_DESC(huge_page, "SCIF Huge Page Support"); |
| 66 | |
| 67 | extern bool mic_p2p_enable; |
| 68 | module_param_named(p2p, mic_p2p_enable, bool, 0600); |
| 69 | MODULE_PARM_DESC(p2p, "SCIF peer-to-peer"); |
| 70 | |
| 71 | extern bool mic_p2p_proxy_enable; |
| 72 | module_param_named(p2p_proxy, mic_p2p_proxy_enable, bool, 0600); |
| 73 | MODULE_PARM_DESC(p2p_proxy, "SCIF peer-to-peer proxy DMA support"); |
| 74 | |
| 75 | extern bool mic_watchdog_enable; |
| 76 | module_param_named(watchdog, mic_watchdog_enable, bool, 0600); |
| 77 | MODULE_PARM_DESC(watchdog, "SCIF Watchdog"); |
| 78 | |
| 79 | extern bool mic_watchdog_auto_reboot; |
| 80 | module_param_named(watchdog_auto_reboot, mic_watchdog_auto_reboot, bool, 0600); |
| 81 | MODULE_PARM_DESC(watchdog_auto_reboot, "SCIF Watchdog auto reboot"); |
| 82 | |
| 83 | bool mic_msi_enable = 1; |
| 84 | module_param_named(msi, mic_msi_enable, bool, 0600); |
| 85 | MODULE_PARM_DESC(mic_msi_enable, "To enable MSIx in the driver."); |
| 86 | |
| 87 | int mic_pm_qos_cpu_dma_lat = -1; |
| 88 | module_param_named(pm_qos_cpu_dma_lat, mic_pm_qos_cpu_dma_lat, int, 0600); |
| 89 | MODULE_PARM_DESC(mic_pm_qos_cpu_dma_lat, "PM QoS CPU DMA latency in usecs."); |
| 90 | |
| 91 | extern int ramoops_count; |
| 92 | module_param_named(ramoops_count, ramoops_count, int, 0600); |
| 93 | MODULE_PARM_DESC(ramoops_count, "Maximum frame count for the ramoops driver."); |
| 94 | |
| 95 | extern bool mic_crash_dump_enabled; |
| 96 | module_param_named(crash_dump, mic_crash_dump_enabled, bool, 0600); |
| 97 | MODULE_PARM_DESC(mic_crash_dump_enabled, "MIC Crash Dump enabled."); |
| 98 | |
| 99 | #define GET_FILE_SIZE_FROM_INODE(fp) i_size_read((fp)->f_path.dentry->d_inode) |
| 100 | |
| 101 | int usagemode_param = 0; |
| 102 | |
| 103 | static int |
| 104 | mic_open(struct inode *inode, struct file *filp) |
| 105 | { |
| 106 | dev_t dev = inode->i_rdev; |
| 107 | |
| 108 | switch (MINOR(dev)) { |
| 109 | case 0: |
| 110 | return 0; |
| 111 | case 1: |
| 112 | return scif_fdopen(filp); |
| 113 | case 2: |
| 114 | return mic_psmi_open(filp); |
| 115 | } |
| 116 | |
| 117 | return -EINVAL; |
| 118 | } |
| 119 | |
| 120 | static int |
| 121 | mic_release(struct inode *inode, struct file *filp) |
| 122 | { |
| 123 | dev_t dev = inode->i_rdev; |
| 124 | int rc = 0; |
| 125 | |
| 126 | switch (MINOR(dev)) { |
| 127 | case 0: |
| 128 | if (filp->private_data == filp) { |
| 129 | // Fasync is set |
| 130 | rc = fasync_helper(-1, filp, 0, &mic_data.dd_fasync); |
| 131 | mic_data.dd_fasync = NULL; |
| 132 | } |
| 133 | return rc; |
| 134 | case 1: |
| 135 | return scif_fdclose(filp); |
| 136 | case 2: |
| 137 | // psmi access to device |
| 138 | return 0; |
| 139 | } |
| 140 | |
| 141 | return -EINVAL; |
| 142 | } |
| 143 | |
| 144 | extern ssize_t mic_psmi_read(struct file * filp, char __user *buf, |
| 145 | size_t count, loff_t *pos); |
| 146 | static ssize_t |
| 147 | mic_read(struct file * filp, char __user *buf, |
| 148 | size_t count, loff_t *pos) |
| 149 | { |
| 150 | dev_t dev = filp->f_path.dentry->d_inode->i_rdev; |
| 151 | if (MINOR(dev) == 2) |
| 152 | return mic_psmi_read(filp, buf, count, pos); |
| 153 | |
| 154 | return -EINVAL; |
| 155 | } |
| 156 | |
| 157 | static long |
| 158 | mic_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| 159 | { |
| 160 | dev_t dev; |
| 161 | int status = 0; |
| 162 | |
| 163 | dev = filp->f_path.dentry->d_inode->i_rdev; |
| 164 | if (MINOR(dev) == 1) |
| 165 | return scif_process_ioctl(filp, cmd, arg); |
| 166 | |
| 167 | if (MINOR(dev) == 2) |
| 168 | return -EINVAL; |
| 169 | |
| 170 | status = adapter_do_ioctl(cmd, arg); |
| 171 | return status; |
| 172 | } |
| 173 | |
| 174 | static int |
| 175 | mic_fasync(int fd, struct file *filp, int on) |
| 176 | { |
| 177 | int rc; |
| 178 | |
| 179 | if ((rc = fasync_helper(fd, filp, on, &mic_data.dd_fasync)) < 0) { |
| 180 | return rc; |
| 181 | } |
| 182 | |
| 183 | if (on) { |
| 184 | #if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)) |
| 185 | rc = __f_setown(filp, task_pid(current), PIDTYPE_PID, 0); |
| 186 | #else |
| 187 | __f_setown(filp, task_pid(current), PIDTYPE_PID, 0); |
| 188 | #endif |
| 189 | filp->private_data = filp; |
| 190 | } else { |
| 191 | filp->private_data = NULL; |
| 192 | } |
| 193 | |
| 194 | return rc; |
| 195 | } |
| 196 | |
| 197 | int |
| 198 | mic_mmap(struct file *f, struct vm_area_struct *vma) |
| 199 | { |
| 200 | dev_t dev = f->f_path.dentry->d_inode->i_rdev; |
| 201 | if (MINOR(dev) == 1) |
| 202 | return micscif_mmap(f, vma); |
| 203 | |
| 204 | return -EINVAL; |
| 205 | } |
| 206 | |
| 207 | unsigned int |
| 208 | mic_poll(struct file *f, poll_table *wait) |
| 209 | { |
| 210 | dev_t dev = f->f_path.dentry->d_inode->i_rdev; |
| 211 | if (MINOR(dev) == 1) |
| 212 | return micscif_poll(f, wait); |
| 213 | |
| 214 | return -EINVAL; |
| 215 | } |
| 216 | |
| 217 | int |
| 218 | mic_flush(struct file *f, fl_owner_t id) |
| 219 | { |
| 220 | dev_t dev = f->f_path.dentry->d_inode->i_rdev; |
| 221 | if (MINOR(dev) == 1) |
| 222 | return micscif_flush(f, id); |
| 223 | |
| 224 | return -EINVAL; |
| 225 | } |
| 226 | |
| 227 | irqreturn_t |
| 228 | mic_irq_isr(int irq, void *data) |
| 229 | { |
| 230 | if (((mic_ctx_t *)data)->msie) |
| 231 | adapter_imsr((mic_ctx_t *)data); |
| 232 | else if (adapter_isr((mic_ctx_t *)data) < 0 ){ |
| 233 | return IRQ_NONE; |
| 234 | } |
| 235 | |
| 236 | return IRQ_HANDLED; |
| 237 | } |
| 238 | |
| 239 | extern struct attribute_group bd_attr_group; |
| 240 | extern struct attribute_group host_attr_group; |
| 241 | extern struct attribute_group scif_attr_group; |
| 242 | extern struct attribute_group psmi_attr_group; |
| 243 | extern struct bin_attribute mic_psmi_ptes_attr; |
| 244 | |
| 245 | static int |
| 246 | mic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 247 | { |
| 248 | int brdnum = mic_data.dd_numdevs; |
| 249 | int err = 0; |
| 250 | bd_info_t *bd_info; |
| 251 | mic_ctx_t *mic_ctx; |
| 252 | #ifdef CONFIG_PCI_MSI |
| 253 | int i=0; |
| 254 | #endif |
| 255 | if ((bd_info = (bd_info_t *)kzalloc(sizeof(bd_info_t), GFP_KERNEL)) == NULL) { |
| 256 | printk("MIC: probe failed allocating memory for bd_info\n"); |
| 257 | return -ENOSPC; |
| 258 | } |
| 259 | |
| 260 | mic_ctx = &bd_info->bi_ctx; |
| 261 | mic_ctx->bd_info = bd_info; |
| 262 | mic_ctx->bi_id = brdnum; |
| 263 | mic_ctx->bi_pdev = pdev; |
| 264 | mic_ctx->msie = 0; |
| 265 | mic_data.dd_bi[brdnum] = bd_info; |
| 266 | |
| 267 | if ((err = pci_enable_device(pdev))) { |
| 268 | printk("pci_enable failed board #%d\n", brdnum); |
| 269 | goto probe_freebd; |
| 270 | } |
| 271 | |
| 272 | pci_set_master(pdev); |
| 273 | err = pci_reenable_device(pdev); |
| 274 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
| 275 | if (err) { |
| 276 | printk("mic %d: ERROR DMA not available\n", brdnum); |
| 277 | goto probe_freebd; |
| 278 | } |
| 279 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
| 280 | if (err) { |
| 281 | printk("mic %d: ERROR pci_set_consistent_dma_mask(64) %d\n", brdnum, err); |
| 282 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
| 283 | if (err) { |
| 284 | printk("mic %d: ERROR pci_set_consistent_dma_mask(32) %d\n", brdnum, err); |
| 285 | goto probe_freebd; |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | // Allocate bar 4 for MMIO and GTT |
| 290 | bd_info->bi_ctx.mmio.pa = pci_resource_start(pdev, DLDR_MMIO_BAR); |
| 291 | bd_info->bi_ctx.mmio.len = pci_resource_len(pdev, DLDR_MMIO_BAR); |
| 292 | if (request_mem_region(bd_info->bi_ctx.mmio.pa, |
| 293 | bd_info->bi_ctx.mmio.len, "mic") == NULL) { |
| 294 | printk("mic %d: failed to reserve mmio space\n", brdnum); |
| 295 | goto probe_freebd; |
| 296 | } |
| 297 | |
| 298 | // Allocate bar 0 for access Aperture |
| 299 | bd_info->bi_ctx.aper.pa = pci_resource_start(pdev, DLDR_APT_BAR); |
| 300 | bd_info->bi_ctx.aper.len = pci_resource_len(pdev, DLDR_APT_BAR); |
| 301 | if (request_mem_region(bd_info->bi_ctx.aper.pa, |
| 302 | bd_info->bi_ctx.aper.len, "mic") == NULL) { |
| 303 | printk("mic %d: failed to reserve aperture space\n", brdnum); |
| 304 | goto probe_relmmio; |
| 305 | } |
| 306 | |
| 307 | #ifdef CONFIG_PCI_MSI |
| 308 | if (mic_msi_enable) { |
| 309 | for (i = 0; i < MIC_NUM_MSIX_ENTRIES; i++) |
| 310 | bd_info->bi_msix_entries[i].entry = i; |
| 311 | err = pci_enable_msix_exact(mic_ctx->bi_pdev, bd_info->bi_msix_entries, |
| 312 | MIC_NUM_MSIX_ENTRIES); |
| 313 | if (err == 0) { // Error code of zero means success. |
| 314 | // Only support 1 MSIx for now |
| 315 | err = request_irq(bd_info->bi_msix_entries[0].vector, |
| 316 | mic_irq_isr, 0, "mic", mic_ctx); |
| 317 | if (err != 0) { |
| 318 | printk("MIC: Error in request_irq %d\n", err); |
| 319 | goto probe_relaper; |
| 320 | } |
| 321 | mic_ctx->msie = 1; |
| 322 | } |
| 323 | } |
| 324 | #endif |
| 325 | |
| 326 | // TODO: this needs to be hardened and actually return errors |
| 327 | if ((err = adapter_init_device(mic_ctx)) != 0) { |
| 328 | printk("MIC: Adapter init device failed %d\n", err); |
| 329 | goto probe_relaper; |
| 330 | } |
| 331 | |
| 332 | // Adding sysfs entries |
| 333 | set_sysfs_entries(mic_ctx); |
| 334 | |
| 335 | bd_info->bi_sysfsdev = device_create(mic_lindata.dd_class, &pdev->dev, |
| 336 | mic_lindata.dd_dev + 2 + mic_ctx->bd_info->bi_ctx.bi_id, |
| 337 | NULL, "mic%d", mic_ctx->bd_info->bi_ctx.bi_id); |
| 338 | err = sysfs_create_group(&mic_ctx->bd_info->bi_sysfsdev->kobj, &bd_attr_group); |
| 339 | mic_ctx->sysfs_state = sysfs_get_dirent(mic_ctx->bd_info->bi_sysfsdev->kobj.sd, |
| 340 | #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35) && LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0)) |
| 341 | NULL, |
| 342 | #endif |
| 343 | "state"); |
| 344 | |
| 345 | dev_set_drvdata(mic_ctx->bd_info->bi_sysfsdev, mic_ctx); |
| 346 | |
| 347 | if (!mic_ctx->msie) |
| 348 | if ((err = request_irq(mic_ctx->bi_pdev->irq, mic_irq_isr, |
| 349 | IRQF_SHARED, "mic", mic_ctx)) != 0) { |
| 350 | printk("MIC: Error in request_irq %d\n", err); |
| 351 | goto probe_unmapaper; |
| 352 | } |
| 353 | |
| 354 | adapter_probe(&bd_info->bi_ctx); |
| 355 | |
| 356 | if (mic_ctx->bi_psmi.enabled) { |
| 357 | err = sysfs_create_group(&mic_ctx->bd_info->bi_sysfsdev->kobj, |
| 358 | &psmi_attr_group); |
| 359 | err = device_create_bin_file(mic_ctx->bd_info->bi_sysfsdev, |
| 360 | &mic_psmi_ptes_attr); |
| 361 | } |
| 362 | |
| 363 | adapter_wait_reset(mic_ctx); |
| 364 | |
| 365 | // Adding a board instance so increment the total number of MICs in the system. |
| 366 | list_add_tail(&bd_info->bi_list, &mic_data.dd_bdlist); |
| 367 | mic_data.dd_numdevs++; |
| 368 | printk("mic_probe %d:%d:%d as board #%d\n", pdev->bus->number, |
| 369 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), brdnum); |
| 370 | return 0; |
| 371 | |
| 372 | probe_unmapaper: |
| 373 | wait_event(mic_ctx->ioremapwq, mic_ctx->aper.va || mic_ctx->state == MIC_RESETFAIL); |
| 374 | if (mic_ctx->aper.va) |
| 375 | iounmap((void *)bd_info->bi_ctx.aper.va); |
| 376 | iounmap((void *)bd_info->bi_ctx.mmio.va); |
| 377 | |
| 378 | probe_relaper: |
| 379 | release_mem_region(bd_info->bi_ctx.aper.pa, bd_info->bi_ctx.aper.len); |
| 380 | |
| 381 | probe_relmmio: |
| 382 | release_mem_region(bd_info->bi_ctx.mmio.pa, bd_info->bi_ctx.mmio.len); |
| 383 | |
| 384 | probe_freebd: |
| 385 | kfree(bd_info); |
| 386 | return err; |
| 387 | } |
| 388 | |
| 389 | static void |
| 390 | mic_remove(struct pci_dev *pdev) |
| 391 | { |
| 392 | int32_t brdnum; |
| 393 | bd_info_t *bd_info; |
| 394 | |
| 395 | if (mic_data.dd_numdevs - 1 < 0) |
| 396 | return; |
| 397 | mic_data.dd_numdevs--; |
| 398 | brdnum = mic_data.dd_numdevs; |
| 399 | |
| 400 | /* Make sure boards are shutdown and not available. */ |
| 401 | bd_info = mic_data.dd_bi[brdnum]; |
| 402 | |
| 403 | spin_lock_bh(&bd_info->bi_ctx.sysfs_lock); |
| 404 | sysfs_put(bd_info->bi_ctx.sysfs_state); |
| 405 | bd_info->bi_ctx.sysfs_state = NULL; |
| 406 | spin_unlock_bh(&bd_info->bi_ctx.sysfs_lock); |
| 407 | |
| 408 | if (bd_info->bi_ctx.bi_psmi.enabled) { |
| 409 | device_remove_bin_file(bd_info->bi_sysfsdev, &mic_psmi_ptes_attr); |
| 410 | sysfs_remove_group(&bd_info->bi_sysfsdev->kobj, &psmi_attr_group); |
| 411 | } |
| 412 | sysfs_remove_group(&bd_info->bi_sysfsdev->kobj, &bd_attr_group); |
| 413 | |
| 414 | free_sysfs_entries(&bd_info->bi_ctx); |
| 415 | device_destroy(mic_lindata.dd_class, |
| 416 | mic_lindata.dd_dev + 2 + bd_info->bi_ctx.bi_id); |
| 417 | |
| 418 | adapter_stop_device(&bd_info->bi_ctx, 1, 0); |
| 419 | /* |
| 420 | * Need to wait for reset since accessing the card while GDDR training |
| 421 | * is ongoing by adapter_remove(..) below for example can be fatal. |
| 422 | */ |
| 423 | wait_for_reset(&bd_info->bi_ctx); |
| 424 | |
| 425 | mic_disable_interrupts(&bd_info->bi_ctx); |
| 426 | |
| 427 | if (!bd_info->bi_ctx.msie) { |
| 428 | free_irq(bd_info->bi_ctx.bi_pdev->irq, &bd_info->bi_ctx); |
| 429 | #ifdef CONFIG_PCI_MSI |
| 430 | } else { |
| 431 | free_irq(bd_info->bi_msix_entries[0].vector, &bd_info->bi_ctx); |
| 432 | pci_disable_msix(bd_info->bi_ctx.bi_pdev); |
| 433 | #endif |
| 434 | } |
| 435 | adapter_remove(&bd_info->bi_ctx); |
| 436 | release_mem_region(bd_info->bi_ctx.aper.pa, bd_info->bi_ctx.aper.len); |
| 437 | release_mem_region(bd_info->bi_ctx.mmio.pa, bd_info->bi_ctx.mmio.len); |
| 438 | pci_disable_device(bd_info->bi_ctx.bi_pdev); |
| 439 | kfree(bd_info); |
| 440 | } |
| 441 | |
| 442 | static void |
| 443 | mic_shutdown(struct pci_dev *pdev) { |
| 444 | mic_ctx_t *mic_ctx; |
| 445 | mic_ctx = get_device_context(pdev); |
| 446 | |
| 447 | if(!mic_ctx) |
| 448 | return; |
| 449 | |
| 450 | adapter_stop_device(mic_ctx, !RESET_WAIT , !RESET_REATTEMPT); |
| 451 | return; |
| 452 | } |
| 453 | static const struct file_operations mic_fops = { |
| 454 | .open = mic_open, |
| 455 | .release = mic_release, |
| 456 | .read = mic_read, |
| 457 | .unlocked_ioctl = mic_ioctl, |
| 458 | .fasync = mic_fasync, |
| 459 | .mmap = mic_mmap, |
| 460 | .poll = mic_poll, |
| 461 | .flush = mic_flush, |
| 462 | .owner = THIS_MODULE, |
| 463 | }; |
| 464 | |
| 465 | static const struct dev_pm_ops pci_dev_pm_ops = { |
| 466 | .suspend = micpm_suspend, |
| 467 | .resume = micpm_resume, |
| 468 | .freeze = micpm_suspend, |
| 469 | .restore = micpm_resume, |
| 470 | .suspend_noirq = micpm_suspend_noirq, |
| 471 | .resume_noirq = micpm_resume_noirq, |
| 472 | .freeze_noirq = micpm_suspend_noirq, |
| 473 | .restore_noirq = micpm_resume_noirq, |
| 474 | }; |
| 475 | |
| 476 | static struct notifier_block mic_pm_notifer = { |
| 477 | .notifier_call = micpm_notifier_block, |
| 478 | }; |
| 479 | |
| 480 | static struct pci_device_id mic_pci_tbl[] = { |
| 481 | #ifdef CONFIG_ML1OM |
| 482 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ABR_2249, PCI_ANY_ID, PCI_ANY_ID, |
| 483 | 0, 0, 0 }, |
| 484 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ABR_224a, PCI_ANY_ID, PCI_ANY_ID, |
| 485 | 0, 0, 0 }, |
| 486 | #endif |
| 487 | #ifdef CONFIG_MK1OM |
| 488 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2250, PCI_ANY_ID, PCI_ANY_ID, |
| 489 | 0, 0, 0 }, |
| 490 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2251, PCI_ANY_ID, PCI_ANY_ID, |
| 491 | 0, 0, 0 }, |
| 492 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2252, PCI_ANY_ID, PCI_ANY_ID, |
| 493 | 0, 0, 0 }, |
| 494 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2253, PCI_ANY_ID, PCI_ANY_ID, |
| 495 | 0, 0, 0 }, |
| 496 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2254, PCI_ANY_ID, PCI_ANY_ID, |
| 497 | 0, 0, 0 }, |
| 498 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2255, PCI_ANY_ID, PCI_ANY_ID, |
| 499 | 0, 0, 0 }, |
| 500 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2256, PCI_ANY_ID, PCI_ANY_ID, |
| 501 | 0, 0, 0 }, |
| 502 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2257, PCI_ANY_ID, PCI_ANY_ID, |
| 503 | 0, 0, 0 }, |
| 504 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2258, PCI_ANY_ID, PCI_ANY_ID, |
| 505 | 0, 0, 0 }, |
| 506 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_2259, PCI_ANY_ID, PCI_ANY_ID, |
| 507 | 0, 0, 0 }, |
| 508 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_225a, PCI_ANY_ID, PCI_ANY_ID, |
| 509 | 0, 0, 0 }, |
| 510 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_225b, PCI_ANY_ID, PCI_ANY_ID, |
| 511 | 0, 0, 0 }, |
| 512 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_225c, PCI_ANY_ID, PCI_ANY_ID, |
| 513 | 0, 0, 0 }, |
| 514 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_225d, PCI_ANY_ID, PCI_ANY_ID, |
| 515 | 0, 0, 0 }, |
| 516 | { PCI_VENDOR_ID_INTEL, PCI_DEVICE_KNC_225e, PCI_ANY_ID, PCI_ANY_ID, |
| 517 | 0, 0, 0 }, |
| 518 | |
| 519 | #endif |
| 520 | { 0, } |
| 521 | }; |
| 522 | |
| 523 | #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,31) |
| 524 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(3,3,0) |
| 525 | #define MODE_T umode_t |
| 526 | #else |
| 527 | #define MODE_T mode_t |
| 528 | #endif |
| 529 | static char * |
| 530 | mic_devnode(struct device *dev, MODE_T *mode) |
| 531 | { |
| 532 | return kasprintf(GFP_KERNEL, "mic/%s", dev_name(dev)); |
| 533 | } |
| 534 | #undef MODE_T |
| 535 | #endif |
| 536 | |
| 537 | static int __init |
| 538 | mic_init(void) |
| 539 | { |
| 540 | int ret, i; |
| 541 | |
| 542 | adapter_init(); |
| 543 | |
| 544 | unaligned_cache = micscif_kmem_cache_create(); |
| 545 | if (!unaligned_cache) { |
| 546 | ret = -ENOMEM; |
| 547 | goto init_free_ports; |
| 548 | } |
| 549 | |
| 550 | mic_lindata.dd_pcidriver.name = "mic"; |
| 551 | mic_lindata.dd_pcidriver.id_table = mic_pci_tbl; |
| 552 | mic_lindata.dd_pcidriver.probe = mic_probe; |
| 553 | mic_lindata.dd_pcidriver.remove = mic_remove; |
| 554 | mic_lindata.dd_pcidriver.driver.pm = &pci_dev_pm_ops; |
| 555 | mic_lindata.dd_pcidriver.shutdown = mic_shutdown; |
| 556 | |
| 557 | |
| 558 | if ((ret = alloc_chrdev_region(&mic_lindata.dd_dev, |
| 559 | 0, MAX_DLDR_MINORS, "mic") != 0)) { |
| 560 | printk("Error allocating device nodes: %d\n", ret); |
| 561 | goto init_free_ports; |
| 562 | } |
| 563 | |
| 564 | cdev_init(&mic_lindata.dd_cdev, &mic_fops); |
| 565 | mic_lindata.dd_cdev.owner = THIS_MODULE; |
| 566 | mic_lindata.dd_cdev.ops = &mic_fops; |
| 567 | |
| 568 | if ((ret = cdev_add(&mic_lindata.dd_cdev, |
| 569 | mic_lindata.dd_dev, MAX_DLDR_MINORS) != 0)) { |
| 570 | kobject_put(&mic_lindata.dd_cdev.kobj); |
| 571 | goto init_free_region; |
| 572 | } |
| 573 | |
| 574 | mic_lindata.dd_class = class_create(THIS_MODULE, "mic"); |
| 575 | if (IS_ERR(mic_lindata.dd_class)) { |
| 576 | printk("MICDLDR: Error createing mic class\n"); |
| 577 | cdev_del(&mic_lindata.dd_cdev); |
| 578 | ret = PTR_ERR(mic_lindata.dd_class); |
| 579 | goto init_free_region; |
| 580 | } |
| 581 | |
| 582 | #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,31) |
| 583 | mic_lindata.dd_class->devnode = mic_devnode; |
| 584 | #endif |
| 585 | |
| 586 | mic_lindata.dd_hostdev = device_create(mic_lindata.dd_class, NULL, |
| 587 | mic_lindata.dd_dev, NULL, "ctrl"); |
| 588 | mic_lindata.dd_scifdev = device_create(mic_lindata.dd_class, NULL, |
| 589 | mic_lindata.dd_dev + 1, NULL, "scif"); |
| 590 | ret = sysfs_create_group(&mic_lindata.dd_hostdev->kobj, &host_attr_group); |
| 591 | ret = sysfs_create_group(&mic_lindata.dd_scifdev->kobj, &scif_attr_group); |
| 592 | |
| 593 | #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,31) |
| 594 | mic_lindata.dd_class->devnode = NULL; |
| 595 | #endif |
| 596 | |
| 597 | if (micveth_init(mic_lindata.dd_hostdev)) |
| 598 | printk(KERN_ERR "%s: micveth_init failed\n", __func__); |
| 599 | |
| 600 | ret = pci_register_driver(&mic_lindata.dd_pcidriver); |
| 601 | if (ret) { |
| 602 | micscif_destroy(); |
| 603 | printk("mic: failed to register pci driver %d\n", ret); |
| 604 | goto clean_unregister; |
| 605 | } |
| 606 | |
| 607 | if (!mic_data.dd_numdevs) { |
| 608 | printk("mic: No MIC boards present. SCIF available in loopback mode\n"); |
| 609 | } else { |
| 610 | printk("mic: number of devices detected %d \n", mic_data.dd_numdevs); |
| 611 | } |
| 612 | |
| 613 | for (i = 0; i < mic_data.dd_numdevs; i++) { |
| 614 | mic_ctx_t *mic_ctx = get_per_dev_ctx(i); |
| 615 | wait_event(mic_ctx->ioremapwq, |
| 616 | mic_ctx->aper.va || mic_ctx->state == MIC_RESETFAIL); |
| 617 | destroy_workqueue(mic_ctx->ioremapworkq); |
| 618 | } |
| 619 | |
| 620 | micveth_init_legacy(mic_data.dd_numdevs, mic_lindata.dd_hostdev); |
| 621 | |
| 622 | ret = acptboot_init(); |
| 623 | |
| 624 | #ifdef USE_VCONSOLE |
| 625 | micvcons_create(mic_data.dd_numdevs); |
| 626 | #endif |
| 627 | |
| 628 | /* Initialize Data structures for PM Disconnect */ |
| 629 | ret = micpm_disconn_init(mic_data.dd_numdevs + 1); |
| 630 | if (ret) |
| 631 | printk(KERN_ERR "%s: Failed to initialize PM disconnect" |
| 632 | " data structures. PM may not work as expected." |
| 633 | " ret = %d\n", __func__, ret); |
| 634 | register_pm_notifier(&mic_pm_notifer); |
| 635 | #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)) |
| 636 | ret = pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, "mic", mic_pm_qos_cpu_dma_lat); |
| 637 | if (ret) { |
| 638 | printk(KERN_ERR "%s %d mic_pm_qos_cpu_dma_lat %d ret %d\n", |
| 639 | __func__, __LINE__, mic_pm_qos_cpu_dma_lat, ret); |
| 640 | ret = 0; |
| 641 | /* Dont fail driver load due to PM QoS API. Fall through */ |
| 642 | } |
| 643 | #endif |
| 644 | return 0; |
| 645 | |
| 646 | clean_unregister: |
| 647 | device_destroy(mic_lindata.dd_class, mic_lindata.dd_dev + 1); |
| 648 | device_destroy(mic_lindata.dd_class, mic_lindata.dd_dev); |
| 649 | class_destroy(mic_lindata.dd_class); |
| 650 | cdev_del(&mic_lindata.dd_cdev); |
| 651 | unregister_pm_notifier(&mic_pm_notifer); |
| 652 | init_free_region: |
| 653 | unregister_chrdev_region(mic_lindata.dd_dev, MAX_DLDR_MINORS); |
| 654 | init_free_ports: |
| 655 | micpm_uninit(); |
| 656 | return ret; |
| 657 | } |
| 658 | |
| 659 | static void __exit |
| 660 | mic_exit(void) |
| 661 | { |
| 662 | /* Close endpoints related to reverse registration */ |
| 663 | acptboot_exit(); |
| 664 | |
| 665 | #ifdef USE_VCONSOLE |
| 666 | micvcons_destroy(mic_data.dd_numdevs); |
| 667 | #endif |
| 668 | |
| 669 | pci_unregister_driver(&mic_lindata.dd_pcidriver); |
| 670 | micpm_uninit(); |
| 671 | |
| 672 | /* Uninit data structures for PM disconnect */ |
| 673 | micpm_disconn_uninit(mic_data.dd_numdevs + 1); |
| 674 | |
| 675 | #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)) |
| 676 | pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, "mic"); |
| 677 | #endif |
| 678 | micscif_kmem_cache_destroy(); |
| 679 | vmcore_exit(); |
| 680 | micveth_exit(); |
| 681 | micscif_destroy(); |
| 682 | ramoops_exit(); |
| 683 | |
| 684 | device_destroy(mic_lindata.dd_class, mic_lindata.dd_dev + 1); |
| 685 | device_destroy(mic_lindata.dd_class, mic_lindata.dd_dev); |
| 686 | class_destroy(mic_lindata.dd_class); |
| 687 | cdev_del(&mic_lindata.dd_cdev); |
| 688 | unregister_chrdev_region(mic_lindata.dd_dev, MAX_DLDR_MINORS); |
| 689 | unregister_pm_notifier(&mic_pm_notifer); |
| 690 | return; |
| 691 | } |
| 692 | |
| 693 | void |
| 694 | set_sysfs_entries(mic_ctx_t *mic_ctx) |
| 695 | { |
| 696 | memset(&mic_ctx->sysfs_info, 0, sizeof(mic_ctx->sysfs_info)); |
| 697 | } |
| 698 | |
| 699 | void |
| 700 | free_sysfs_entries(mic_ctx_t *mic_ctx) |
| 701 | { |
| 702 | if (mic_ctx->image != NULL) |
| 703 | kfree(mic_ctx->image); /* mic_ctx->initramfs points into this buffer */ |
| 704 | if (mic_ctx->sysfs_info.cmdline != NULL) |
| 705 | kfree(mic_ctx->sysfs_info.cmdline); |
| 706 | if (mic_ctx->sysfs_info.kernel_cmdline != NULL) |
| 707 | kfree(mic_ctx->sysfs_info.kernel_cmdline); |
| 708 | } |
| 709 | |
| 710 | mic_ctx_t * |
| 711 | get_per_dev_ctx(uint16_t node) |
| 712 | { |
| 713 | /* TODO: Its important to check the upper bound of the dd_bi array as well. |
| 714 | * Cannot be done currently since not all calling functions to get_per_dev_ctx |
| 715 | * has the dd_numdevs set correctly. (See mic_ctx_map_single call in adapter_init_device |
| 716 | * thats callled even before dd_numdevs is incremented. */ |
| 717 | return &mic_data.dd_bi[node]->bi_ctx; |
| 718 | } |
| 719 | |
| 720 | int |
| 721 | get_num_devs(mic_ctx_t *mic_ctx, uint32_t *num_devs) |
| 722 | { |
| 723 | if (num_devs == NULL) |
| 724 | return -EINVAL; |
| 725 | if (copy_to_user(num_devs, &mic_data.dd_numdevs, sizeof(uint32_t))) |
| 726 | return -EFAULT; |
| 727 | return 0; |
| 728 | } |
| 729 | |
| 730 | int |
| 731 | mic_get_file_size(const char* fn, uint32_t* file_len) |
| 732 | { |
| 733 | struct file *filp; |
| 734 | loff_t filp_size; |
| 735 | uint32_t status = 0; |
| 736 | mm_segment_t fs = get_fs(); |
| 737 | |
| 738 | set_fs(get_ds()); |
| 739 | |
| 740 | if (!fn || IS_ERR(filp = filp_open(fn, 0, 0))) { |
| 741 | status = EINVAL; |
| 742 | goto cleanup_fs; |
| 743 | } |
| 744 | |
| 745 | filp_size = GET_FILE_SIZE_FROM_INODE(filp); |
| 746 | if (filp_size <= 0) { |
| 747 | status = EINVAL; |
| 748 | goto cleanup_filp; |
| 749 | } |
| 750 | |
| 751 | *file_len = filp_size; |
| 752 | cleanup_filp: |
| 753 | filp_close(filp, current->files); |
| 754 | cleanup_fs: |
| 755 | set_fs(fs); |
| 756 | return status; |
| 757 | } |
| 758 | |
| 759 | // loads file from hdd into pci physical memory |
| 760 | int |
| 761 | mic_load_file(const char* fn, uint8_t* buffer, uint32_t max_size) |
| 762 | { |
| 763 | long c; |
| 764 | int status = 0; |
| 765 | struct file *filp; |
| 766 | loff_t filp_size, pos = 0; |
| 767 | |
| 768 | mm_segment_t fs = get_fs(); |
| 769 | set_fs(get_ds()); |
| 770 | |
| 771 | if (!fn || IS_ERR(filp = filp_open(fn, 0, 0))) { |
| 772 | status = EINVAL; |
| 773 | goto cleanup_fs; |
| 774 | } |
| 775 | |
| 776 | filp_size = GET_FILE_SIZE_FROM_INODE(filp); |
| 777 | if (filp_size <= 0) { |
| 778 | goto cleanup_filp; |
| 779 | } |
| 780 | |
| 781 | c = vfs_read(filp, buffer, filp_size, &pos); |
| 782 | if(c != (long)filp_size) { |
| 783 | status = -1; //FIXME |
| 784 | goto cleanup_filp; |
| 785 | } |
| 786 | |
| 787 | cleanup_filp: |
| 788 | filp_close(filp, current->files); |
| 789 | cleanup_fs: |
| 790 | set_fs(fs); |
| 791 | |
| 792 | return status; |
| 793 | } |
| 794 | |
| 795 | module_init(mic_init); |
| 796 | module_exit(mic_exit); |