drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

   1 /**
   2  * \file amdgpu_drv.c
   3  * AMD Amdgpu driver
   4  *
   5  * \author Gareth Hughes <gareth@valinux.com>
   6  */
   7
   8 /*
   9  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  10  * All Rights Reserved.
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a
  13  * copy of this software and associated documentation files (the "Software"),
  14  * to deal in the Software without restriction, including without limitation
  15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16  * and/or sell copies of the Software, and to permit persons to whom the
  17  * Software is furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice (including the next
  20  * paragraph) shall be included in all copies or substantial portions of the
  21  * Software.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  24  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  26  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  27  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  28  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  29  * OTHER DEALINGS IN THE SOFTWARE.
  30  */
  31
  32 #include <drm/drmP.h>
  33 #include <drm/amdgpu_drm.h>
  34 #include <drm/drm_gem.h>
  35 #include "amdgpu_drv.h"
  36
  37 #include <drm/drm_pciids.h>
  38 #include <linux/console.h>
  39 #include <linux/module.h>
  40 #include <linux/pm_runtime.h>
  41 #include <linux/vga_switcheroo.h>
  42 #include "drm_crtc_helper.h"
  43
  44 #include "amdgpu.h"
  45 #include "amdgpu_irq.h"
  46
  47 /*
  48  * KMS wrapper.
  49  * - 3.0.0 - initial driver
  50  */
  51 #define KMS_DRIVER_MAJOR        3
  52 #define KMS_DRIVER_MINOR        0
  53 #define KMS_DRIVER_PATCHLEVEL   0
  54
  55 int amdgpu_vram_limit = 0;
  56 int amdgpu_gart_size = -1; /* auto */
  57 int amdgpu_benchmarking = 0;
  58 int amdgpu_testing = 0;
  59 int amdgpu_audio = -1;
  60 int amdgpu_disp_priority = 0;
  61 int amdgpu_hw_i2c = 0;
  62 int amdgpu_pcie_gen2 = -1;
  63 int amdgpu_msi = -1;
  64 int amdgpu_lockup_timeout = 10000;
  65 int amdgpu_dpm = -1;
  66 int amdgpu_smc_load_fw = 1;
  67 int amdgpu_aspm = -1;
  68 int amdgpu_runtime_pm = -1;
  69 int amdgpu_hard_reset = 0;
  70 unsigned amdgpu_ip_block_mask = 0xffffffff;
  71 int amdgpu_bapm = -1;
  72 int amdgpu_deep_color = 0;
  73 int amdgpu_vm_size = 8;
  74 int amdgpu_vm_block_size = -1;
  75 int amdgpu_exp_hw_support = 0;
  76
  77 MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
  78 module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
  79
  80 MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32, 64, etc., -1 = auto)");
  81 module_param_named(gartsize, amdgpu_gart_size, int, 0600);
  82
  83 MODULE_PARM_DESC(benchmark, "Run benchmark");
  84 module_param_named(benchmark, amdgpu_benchmarking, int, 0444);
  85
  86 MODULE_PARM_DESC(test, "Run tests");
  87 module_param_named(test, amdgpu_testing, int, 0444);
  88
  89 MODULE_PARM_DESC(audio, "Audio enable (-1 = auto, 0 = disable, 1 = enable)");
  90 module_param_named(audio, amdgpu_audio, int, 0444);
  91
  92 MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 = normal, 2 = high)");
  93 module_param_named(disp_priority, amdgpu_disp_priority, int, 0444);
  94
  95 MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
  96 module_param_named(hw_i2c, amdgpu_hw_i2c, int, 0444);
  97
  98 MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (-1 = auto, 0 = disable, 1 = enable)");
  99 module_param_named(pcie_gen2, amdgpu_pcie_gen2, int, 0444);
 100
 101 MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
 102 module_param_named(msi, amdgpu_msi, int, 0444);
 103
 104 MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (defaul 10000 = 10 seconds, 0 = disable)");
 105 module_param_named(lockup_timeout, amdgpu_lockup_timeout, int, 0444);
 106
 107 MODULE_PARM_DESC(dpm, "DPM support (1 = enable, 0 = disable, -1 = auto)");
 108 module_param_named(dpm, amdgpu_dpm, int, 0444);
 109
 110 MODULE_PARM_DESC(smc_load_fw, "SMC firmware loading(1 = enable, 0 = disable)");
 111 module_param_named(smc_load_fw, amdgpu_smc_load_fw, int, 0444);
 112
 113 MODULE_PARM_DESC(aspm, "ASPM support (1 = enable, 0 = disable, -1 = auto)");
 114 module_param_named(aspm, amdgpu_aspm, int, 0444);
 115
 116 MODULE_PARM_DESC(runpm, "PX runtime pm (1 = force enable, 0 = disable, -1 = PX only default)");
 117 module_param_named(runpm, amdgpu_runtime_pm, int, 0444);
 118
 119 MODULE_PARM_DESC(hard_reset, "PCI config reset (1 = force enable, 0 = disable (default))");
 120 module_param_named(hard_reset, amdgpu_hard_reset, int, 0444);
 121
 122 MODULE_PARM_DESC(ip_block_mask, "IP Block Mask (all blocks enabled (default))");
 123 module_param_named(ip_block_mask, amdgpu_ip_block_mask, uint, 0444);
 124
 125 MODULE_PARM_DESC(bapm, "BAPM support (1 = enable, 0 = disable, -1 = auto)");
 126 module_param_named(bapm, amdgpu_bapm, int, 0444);
 127
 128 MODULE_PARM_DESC(deep_color, "Deep Color support (1 = enable, 0 = disable (default))");
 129 module_param_named(deep_color, amdgpu_deep_color, int, 0444);
 130
 131 MODULE_PARM_DESC(vm_size, "VM address space size in gigabytes (default 4GB)");
 132 module_param_named(vm_size, amdgpu_vm_size, int, 0444);
 133
 134 MODULE_PARM_DESC(vm_block_size, "VM page table size in bits (default depending on vm_size)");
 135 module_param_named(vm_block_size, amdgpu_vm_block_size, int, 0444);
 136
 137 MODULE_PARM_DESC(exp_hw_support, "experimental hw support (1 = enable, 0 = disable (default))");
 138 module_param_named(exp_hw_support, amdgpu_exp_hw_support, int, 0444);
 139
 140 static struct pci_device_id pciidlist[] = {
 141
 142         {0, 0, 0}
 143 };
 144
 145 MODULE_DEVICE_TABLE(pci, pciidlist);
 146
 147 static struct drm_driver kms_driver;
 148
 149 static int amdgpu_kick_out_firmware_fb(struct pci_dev *pdev)
 150 {
 151         struct apertures_struct *ap;
 152         bool primary = false;
 153
 154         ap = alloc_apertures(1);
 155         if (!ap)
 156                 return -ENOMEM;
 157
 158         ap->ranges[0].base = pci_resource_start(pdev, 0);
 159         ap->ranges[0].size = pci_resource_len(pdev, 0);
 160
 161 #ifdef CONFIG_X86
 162         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
 163 #endif
 164         remove_conflicting_framebuffers(ap, "amdgpudrmfb", primary);
 165         kfree(ap);
 166
 167         return 0;
 168 }
 169
 170 static int amdgpu_pci_probe(struct pci_dev *pdev,
 171                             const struct pci_device_id *ent)
 172 {
 173         unsigned long flags = ent->driver_data;
 174         int ret;
 175
 176         if ((flags & AMDGPU_EXP_HW_SUPPORT) && !amdgpu_exp_hw_support) {
 177                 DRM_INFO("This hardware requires experimental hardware support.\n"
 178                          "See modparam exp_hw_support\n");
 179                 return -ENODEV;
 180         }
 181
 182         /* Get rid of things like offb */
 183         ret = amdgpu_kick_out_firmware_fb(pdev);
 184         if (ret)
 185                 return ret;
 186
 187         return drm_get_pci_dev(pdev, ent, &kms_driver);
 188 }
 189
 190 static void
 191 amdgpu_pci_remove(struct pci_dev *pdev)
 192 {
 193         struct drm_device *dev = pci_get_drvdata(pdev);
 194
 195         drm_put_dev(dev);
 196 }
 197
 198 static int amdgpu_pmops_suspend(struct device *dev)
 199 {
 200         struct pci_dev *pdev = to_pci_dev(dev);
 201         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 202         return amdgpu_suspend_kms(drm_dev, true, true);
 203 }
 204
 205 static int amdgpu_pmops_resume(struct device *dev)
 206 {
 207         struct pci_dev *pdev = to_pci_dev(dev);
 208         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 209         return amdgpu_resume_kms(drm_dev, true, true);
 210 }
 211
 212 static int amdgpu_pmops_freeze(struct device *dev)
 213 {
 214         struct pci_dev *pdev = to_pci_dev(dev);
 215         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 216         return amdgpu_suspend_kms(drm_dev, false, true);
 217 }
 218
 219 static int amdgpu_pmops_thaw(struct device *dev)
 220 {
 221         struct pci_dev *pdev = to_pci_dev(dev);
 222         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 223         return amdgpu_resume_kms(drm_dev, false, true);
 224 }
 225
 226 static int amdgpu_pmops_runtime_suspend(struct device *dev)
 227 {
 228         struct pci_dev *pdev = to_pci_dev(dev);
 229         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 230         int ret;
 231
 232         if (!amdgpu_device_is_px(drm_dev)) {
 233                 pm_runtime_forbid(dev);
 234                 return -EBUSY;
 235         }
 236
 237         drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 238         drm_kms_helper_poll_disable(drm_dev);
 239         vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_OFF);
 240
 241         ret = amdgpu_suspend_kms(drm_dev, false, false);
 242         pci_save_state(pdev);
 243         pci_disable_device(pdev);
 244         pci_ignore_hotplug(pdev);
 245         pci_set_power_state(pdev, PCI_D3cold);
 246         drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF;
 247
 248         return 0;
 249 }
 250
 251 static int amdgpu_pmops_runtime_resume(struct device *dev)
 252 {
 253         struct pci_dev *pdev = to_pci_dev(dev);
 254         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 255         int ret;
 256
 257         if (!amdgpu_device_is_px(drm_dev))
 258                 return -EINVAL;
 259
 260         drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 261
 262         pci_set_power_state(pdev, PCI_D0);
 263         pci_restore_state(pdev);
 264         ret = pci_enable_device(pdev);
 265         if (ret)
 266                 return ret;
 267         pci_set_master(pdev);
 268
 269         ret = amdgpu_resume_kms(drm_dev, false, false);
 270         drm_kms_helper_poll_enable(drm_dev);
 271         vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_ON);
 272         drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
 273         return 0;
 274 }
 275
 276 static int amdgpu_pmops_runtime_idle(struct device *dev)
 277 {
 278         struct pci_dev *pdev = to_pci_dev(dev);
 279         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 280         struct drm_crtc *crtc;
 281
 282         if (!amdgpu_device_is_px(drm_dev)) {
 283                 pm_runtime_forbid(dev);
 284                 return -EBUSY;
 285         }
 286
 287         list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
 288                 if (crtc->enabled) {
 289                         DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
 290                         return -EBUSY;
 291                 }
 292         }
 293
 294         pm_runtime_mark_last_busy(dev);
 295         pm_runtime_autosuspend(dev);
 296         /* we don't want the main rpm_idle to call suspend - we want to autosuspend */
 297         return 1;
 298 }
 299
 300 long amdgpu_drm_ioctl(struct file *filp,
 301                       unsigned int cmd, unsigned long arg)
 302 {
 303         struct drm_file *file_priv = filp->private_data;
 304         struct drm_device *dev;
 305         long ret;
 306         dev = file_priv->minor->dev;
 307         ret = pm_runtime_get_sync(dev->dev);
 308         if (ret < 0)
 309                 return ret;
 310
 311         ret = drm_ioctl(filp, cmd, arg);
 312
 313         pm_runtime_mark_last_busy(dev->dev);
 314         pm_runtime_put_autosuspend(dev->dev);
 315         return ret;
 316 }
 317
 318 static const struct dev_pm_ops amdgpu_pm_ops = {
 319         .suspend = amdgpu_pmops_suspend,
 320         .resume = amdgpu_pmops_resume,
 321         .freeze = amdgpu_pmops_freeze,
 322         .thaw = amdgpu_pmops_thaw,
 323         .poweroff = amdgpu_pmops_freeze,
 324         .restore = amdgpu_pmops_resume,
 325         .runtime_suspend = amdgpu_pmops_runtime_suspend,
 326         .runtime_resume = amdgpu_pmops_runtime_resume,
 327         .runtime_idle = amdgpu_pmops_runtime_idle,
 328 };
 329
 330 static const struct file_operations amdgpu_driver_kms_fops = {
 331         .owner = THIS_MODULE,
 332         .open = drm_open,
 333         .release = drm_release,
 334         .unlocked_ioctl = amdgpu_drm_ioctl,
 335         .mmap = amdgpu_mmap,
 336         .poll = drm_poll,
 337         .read = drm_read,
 338 #ifdef CONFIG_COMPAT
 339         .compat_ioctl = amdgpu_kms_compat_ioctl,
 340 #endif
 341 };
 342
 343 static struct drm_driver kms_driver = {
 344         .driver_features =
 345             DRIVER_USE_AGP |
 346             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
 347             DRIVER_PRIME | DRIVER_RENDER,
 348         .dev_priv_size = 0,
 349         .load = amdgpu_driver_load_kms,
 350         .open = amdgpu_driver_open_kms,
 351         .preclose = amdgpu_driver_preclose_kms,
 352         .postclose = amdgpu_driver_postclose_kms,
 353         .lastclose = amdgpu_driver_lastclose_kms,
 354         .set_busid = drm_pci_set_busid,
 355         .unload = amdgpu_driver_unload_kms,
 356         .get_vblank_counter = amdgpu_get_vblank_counter_kms,
 357         .enable_vblank = amdgpu_enable_vblank_kms,
 358         .disable_vblank = amdgpu_disable_vblank_kms,
 359         .get_vblank_timestamp = amdgpu_get_vblank_timestamp_kms,
 360         .get_scanout_position = amdgpu_get_crtc_scanoutpos,
 361 #if defined(CONFIG_DEBUG_FS)
 362         .debugfs_init = amdgpu_debugfs_init,
 363         .debugfs_cleanup = amdgpu_debugfs_cleanup,
 364 #endif
 365         .irq_preinstall = amdgpu_irq_preinstall,
 366         .irq_postinstall = amdgpu_irq_postinstall,
 367         .irq_uninstall = amdgpu_irq_uninstall,
 368         .irq_handler = amdgpu_irq_handler,
 369         .ioctls = amdgpu_ioctls_kms,
 370         .gem_free_object = amdgpu_gem_object_free,
 371         .gem_open_object = amdgpu_gem_object_open,
 372         .gem_close_object = amdgpu_gem_object_close,
 373         .dumb_create = amdgpu_mode_dumb_create,
 374         .dumb_map_offset = amdgpu_mode_dumb_mmap,
 375         .dumb_destroy = drm_gem_dumb_destroy,
 376         .fops = &amdgpu_driver_kms_fops,
 377
 378         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 379         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 380         .gem_prime_export = amdgpu_gem_prime_export,
 381         .gem_prime_import = drm_gem_prime_import,
 382         .gem_prime_pin = amdgpu_gem_prime_pin,
 383         .gem_prime_unpin = amdgpu_gem_prime_unpin,
 384         .gem_prime_res_obj = amdgpu_gem_prime_res_obj,
 385         .gem_prime_get_sg_table = amdgpu_gem_prime_get_sg_table,
 386         .gem_prime_import_sg_table = amdgpu_gem_prime_import_sg_table,
 387         .gem_prime_vmap = amdgpu_gem_prime_vmap,
 388         .gem_prime_vunmap = amdgpu_gem_prime_vunmap,
 389
 390         .name = DRIVER_NAME,
 391         .desc = DRIVER_DESC,
 392         .date = DRIVER_DATE,
 393         .major = KMS_DRIVER_MAJOR,
 394         .minor = KMS_DRIVER_MINOR,
 395         .patchlevel = KMS_DRIVER_PATCHLEVEL,
 396 };
 397
 398 static struct drm_driver *driver;
 399 static struct pci_driver *pdriver;
 400
 401 static struct pci_driver amdgpu_kms_pci_driver = {
 402         .name = DRIVER_NAME,
 403         .id_table = pciidlist,
 404         .probe = amdgpu_pci_probe,
 405         .remove = amdgpu_pci_remove,
 406         .driver.pm = &amdgpu_pm_ops,
 407 };
 408
 409 static int __init amdgpu_init(void)
 410 {
 411 #ifdef CONFIG_VGA_CONSOLE
 412         if (vgacon_text_force()) {
 413                 DRM_ERROR("VGACON disables amdgpu kernel modesetting.\n");
 414                 return -EINVAL;
 415         }
 416 #endif
 417         DRM_INFO("amdgpu kernel modesetting enabled.\n");
 418         driver = &kms_driver;
 419         pdriver = &amdgpu_kms_pci_driver;
 420         driver->driver_features |= DRIVER_MODESET;
 421         driver->num_ioctls = amdgpu_max_kms_ioctl;
 422         amdgpu_register_atpx_handler();
 423
 424         /* let modprobe override vga console setting */
 425         return drm_pci_init(driver, pdriver);
 426 }
 427
 428 static void __exit amdgpu_exit(void)
 429 {
 430         drm_pci_exit(driver, pdriver);
 431         amdgpu_unregister_atpx_handler();
 432 }
 433
 434 module_init(amdgpu_init);
 435 module_exit(amdgpu_exit);
 436
 437 MODULE_AUTHOR(DRIVER_AUTHOR);
 438 MODULE_DESCRIPTION(DRIVER_DESC);
 439 MODULE_LICENSE("GPL and additional rights");