text: /**
   * \file radeon_drv.c
   * ATI Radeon driver
   *
   * \author Gareth Hughes <gareth@valinux.com>
   */
  
  /*
   * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   * All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #include "drmP.h"
  #include "drm.h"
  #include "radeon_drm.h"
  #include "radeon_drv.h"
  
  #include "drm_pciids.h"
  #include <linux/console.h>
  
  
  #define KMS_DRIVER_MAJOR	2
  #define KMS_DRIVER_MINOR	6
  #define KMS_DRIVER_PATCHLEVEL	0
  int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
  int radeon_driver_unload_kms(struct drm_device *dev);
  int radeon_driver_firstopen_kms(struct drm_device *dev);
  void radeon_driver_lastclose_kms(struct drm_device *dev);
  int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv);
  void radeon_driver_postclose_kms(struct drm_device *dev,
  				 struct drm_file *file_priv);
  void radeon_driver_preclose_kms(struct drm_device *dev,
  				struct drm_file *file_priv);
  int radeon_suspend_kms(struct drm_device *dev, pm_message_t state);
  int radeon_resume_kms(struct drm_device *dev);
  u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc);
  int radeon_enable_vblank_kms(struct drm_device *dev, int crtc);
  void radeon_disable_vblank_kms(struct drm_device *dev, int crtc);
  void radeon_driver_irq_preinstall_kms(struct drm_device *dev);
  int radeon_driver_irq_postinstall_kms(struct drm_device *dev);
  void radeon_driver_irq_uninstall_kms(struct drm_device *dev);
  irqreturn_t radeon_driver_irq_handler_kms(DRM_IRQ_ARGS);
  int radeon_dma_ioctl_kms(struct drm_device *dev, void *data,
  			 struct drm_file *file_priv);
  int radeon_gem_object_init(struct drm_gem_object *obj);
  void radeon_gem_object_free(struct drm_gem_object *obj);
  extern struct drm_ioctl_desc radeon_ioctls_kms[];
  extern int radeon_max_kms_ioctl;
  int radeon_mmap(struct file *filp, struct vm_area_struct *vma);
  #if defined(CONFIG_DEBUG_FS)
  int radeon_debugfs_init(struct drm_minor *minor);
  void radeon_debugfs_cleanup(struct drm_minor *minor);
  #endif
  
  
  int radeon_no_wb;
  int radeon_modeset = -1;
  int radeon_dynclks = -1;
  int radeon_r4xx_atom = 0;
  int radeon_agpmode = 0;
  int radeon_vram_limit = 0;
  int radeon_gart_size = 512; /* default gart size */
  int radeon_benchmarking = 0;
  int radeon_testing = 0;
  int radeon_connector_table = 0;
  int radeon_tv = 1;
  int radeon_new_pll = -1;
  int radeon_audio = 1;
  int radeon_disp_priority = 0;
  int radeon_hw_i2c = 0;
  
  MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
  module_param_named(no_wb, radeon_no_wb, int, 0444);
  
  MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  module_param_named(modeset, radeon_modeset, int, 0400);
  
  MODULE_PARM_DESC(dynclks, "Disable/Enable dynamic clocks");
  module_param_named(dynclks, radeon_dynclks, int, 0444);
  
  MODULE_PARM_DESC(r4xx_atom, "Enable ATOMBIOS modesetting for R4xx");
  module_param_named(r4xx_atom, radeon_r4xx_atom, int, 0444);
  
  MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing");
  module_param_named(vramlimit, radeon_vram_limit, int, 0600);
  
  MODULE_PARM_DESC(agpmode, "AGP Mode (-1 == PCI)");
  module_param_named(agpmode, radeon_agpmode, int, 0444);
  
  MODULE_PARM_DESC(gartsize, "Size of PCIE/IGP gart to setup in megabytes (32,64, etc)\n");
  module_param_named(gartsize, radeon_gart_size, int, 0600);
  
  MODULE_PARM_DESC(benchmark, "Run benchmark");
  module_param_named(benchmark, radeon_benchmarking, int, 0444);
  
  MODULE_PARM_DESC(test, "Run tests");
  module_param_named(test, radeon_testing, int, 0444);
  
  MODULE_PARM_DESC(connector_table, "Force connector table");
  module_param_named(connector_table, radeon_connector_table, int, 0444);
  
  MODULE_PARM_DESC(tv, "TV enable (0 = disable)");
  module_param_named(tv, radeon_tv, int, 0444);
  
  MODULE_PARM_DESC(new_pll, "Select new PLL code");
  module_param_named(new_pll, radeon_new_pll, int, 0444);
  
  MODULE_PARM_DESC(audio, "Audio enable (0 = disable)");
  module_param_named(audio, radeon_audio, int, 0444);
  
  MODULE_PARM_DESC(disp_priority, "Display Priority (0 = auto, 1 = normal, 2 = high)");
  module_param_named(disp_priority, radeon_disp_priority, int, 0444);
  
  MODULE_PARM_DESC(hw_i2c, "hw i2c engine enable (0 = disable)");
  module_param_named(hw_i2c, radeon_hw_i2c, int, 0444);
  
  static int radeon_suspend(struct drm_device *dev, pm_message_t state)
  {
  	drm_radeon_private_t *dev_priv = dev->dev_private;
  
  	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
  		return 0;
  
  	/* Disable *all* interrupts */
  	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
  		RADEON_WRITE(R500_DxMODE_INT_MASK, 0);
  	RADEON_WRITE(RADEON_GEN_INT_CNTL, 0);
  	return 0;
  }
  
  static int radeon_resume(struct drm_device *dev)
  {
  	drm_radeon_private_t *dev_priv = dev->dev_private;
  
  	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_R600)
  		return 0;
  
  	/* Restore interrupt registers */
  	if ((dev_priv->flags & RADEON_FAMILY_MASK) >= CHIP_RS600)
  		RADEON_WRITE(R500_DxMODE_INT_MASK, dev_priv->r500_disp_irq_reg);
  	RADEON_WRITE(RADEON_GEN_INT_CNTL, dev_priv->irq_enable_reg);
  	return 0;
  }
  
  static struct pci_device_id pciidlist[] = {
  	radeon_PCI_IDS
  };
  
  #if defined(CONFIG_DRM_RADEON_KMS)
  MODULE_DEVICE_TABLE(pci, pciidlist);
  #endif
  
  static struct drm_driver driver_old = {
  	.driver_features =
  	    DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
  	    DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED,
  	.dev_priv_size = sizeof(drm_radeon_buf_priv_t),
  	.load = radeon_driver_load,
  	.firstopen = radeon_driver_firstopen,
  	.open = radeon_driver_open,
  	.preclose = radeon_driver_preclose,
  	.postclose = radeon_driver_postclose,
  	.lastclose = radeon_driver_lastclose,
  	.unload = radeon_driver_unload,
  	.suspend = radeon_suspend,
  	.resume = radeon_resume,
  	.get_vblank_counter = radeon_get_vblank_counter,
  	.enable_vblank = radeon_enable_vblank,
  	.disable_vblank = radeon_disable_vblank,
  	.master_create = radeon_master_create,
  	.master_destroy = radeon_master_destroy,
  	.irq_preinstall = radeon_driver_irq_preinstall,
  	.irq_postinstall = radeon_driver_irq_postinstall,
  	.irq_uninstall = radeon_driver_irq_uninstall,
  	.irq_handler = radeon_driver_irq_handler,
  	.reclaim_buffers = drm_core_reclaim_buffers,
  	.get_map_ofs = drm_core_get_map_ofs,
  	.get_reg_ofs = drm_core_get_reg_ofs,
  	.ioctls = radeon_ioctls,
  	.dma_ioctl = radeon_cp_buffers,
  	.fops = {
  		 .owner = THIS_MODULE,
  		 .open = drm_open,
  		 .release = drm_release,
  		 .unlocked_ioctl = drm_ioctl,
  		 .mmap = drm_mmap,
  		 .poll = drm_poll,
  		 .fasync = drm_fasync,
  		 .read = drm_read,
  #ifdef CONFIG_COMPAT
  		 .compat_ioctl = radeon_compat_ioctl,
  #endif
  	},
  
  	.pci_driver = {
  		 .name = DRIVER_NAME,
  		 .id_table = pciidlist,
  	},
  
  	.name = DRIVER_NAME,
  	.desc = DRIVER_DESC,
  	.date = DRIVER_DATE,
  	.major = DRIVER_MAJOR,
  	.minor = DRIVER_MINOR,
  	.patchlevel = DRIVER_PATCHLEVEL,
  };
  
  static struct drm_driver kms_driver;
  
  static int __devinit
  radeon_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  {
  	return drm_get_pci_dev(pdev, ent, &kms_driver);
  }
  
  static void
  radeon_pci_remove(struct pci_dev *pdev)
  {
  	struct drm_device *dev = pci_get_drvdata(pdev);
  
  	drm_put_dev(dev);
  }
  
  static int
  radeon_pci_suspend(struct pci_dev *pdev, pm_message_t state)
  {
  	struct drm_device *dev = pci_get_drvdata(pdev);
  	return radeon_suspend_kms(dev, state);
  }
  
  static int
  radeon_pci_resume(struct pci_dev *pdev)
  {
  	struct drm_device *dev = pci_get_drvdata(pdev);
  	return radeon_resume_kms(dev);
  }
  
  static struct drm_driver kms_driver = {
  	.driver_features =
  	    DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG |
  	    DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_GEM,
  	.dev_priv_size = 0,
  	.load = radeon_driver_load_kms,
  	.firstopen = radeon_driver_firstopen_kms,
  	.open = radeon_driver_open_kms,
  	.preclose = radeon_driver_preclose_kms,
  	.postclose = radeon_driver_postclose_kms,
  	.lastclose = radeon_driver_lastclose_kms,
  	.unload = radeon_driver_unload_kms,
  	.suspend = radeon_suspend_kms,
  	.resume = radeon_resume_kms,
  	.get_vblank_counter = radeon_get_vblank_counter_kms,
  	.enable_vblank = radeon_enable_vblank_kms,
  	.disable_vblank = radeon_disable_vblank_kms,
  #if defined(CONFIG_DEBUG_FS)
  	.debugfs_init = radeon_debugfs_init,
  	.debugfs_cleanup = radeon_debugfs_cleanup,
  #endif
  	.irq_preinstall = radeon_driver_irq_preinstall_kms,
  	.irq_postinstall = radeon_driver_irq_postinstall_kms,
  	.irq_uninstall = radeon_driver_irq_uninstall_kms,
  	.irq_handler = radeon_driver_irq_handler_kms,
  	.reclaim_buffers = drm_core_reclaim_buffers,
  	.get_map_ofs = drm_core_get_map_ofs,
  	.get_reg_ofs = drm_core_get_reg_ofs,
  	.ioctls = radeon_ioctls_kms,
  	.gem_init_object = radeon_gem_object_init,
  	.gem_free_object = radeon_gem_object_free,
  	.dma_ioctl = radeon_dma_ioctl_kms,
  	.fops = {
  		 .owner = THIS_MODULE,
  		 .open = drm_open,
  		 .release = drm_release,
  		 .unlocked_ioctl = drm_ioctl,
  		 .mmap = radeon_mmap,
  		 .poll = drm_poll,
  		 .fasync = drm_fasync,
  		 .read = drm_read,
  #ifdef CONFIG_COMPAT
  		 .compat_ioctl = radeon_kms_compat_ioctl,
  #endif
  	},
  
  	.pci_driver = {
  		 .name = DRIVER_NAME,
  		 .id_table = pciidlist,
  		 .probe = radeon_pci_probe,
  		 .remove = radeon_pci_remove,
  		 .suspend = radeon_pci_suspend,
  		 .resume = radeon_pci_resume,
  	},
  
  	.name = DRIVER_NAME,
  	.desc = DRIVER_DESC,
  	.date = DRIVER_DATE,
  	.major = KMS_DRIVER_MAJOR,
  	.minor = KMS_DRIVER_MINOR,
  	.patchlevel = KMS_DRIVER_PATCHLEVEL,
  };
  
  static struct drm_driver *driver;
  
  static int __init radeon_init(void)
  {
  	driver = &driver_old;
  	driver->num_ioctls = radeon_max_ioctl;
  #ifdef CONFIG_VGA_CONSOLE
  	if (vgacon_text_force() && radeon_modeset == -1) {
  		DRM_INFO("VGACON disable radeon kernel modesetting.\n");
  		driver = &driver_old;
  		driver->driver_features &= ~DRIVER_MODESET;
  		radeon_modeset = 0;
  	}
  #endif
  	/* if enabled by default */
  	if (radeon_modeset == -1) {
  #ifdef CONFIG_DRM_RADEON_KMS
  		DRM_INFO("radeon defaulting to kernel modesetting.\n");
  		radeon_modeset = 1;
  #else
  		DRM_INFO("radeon defaulting to userspace modesetting.\n");
  		radeon_modeset = 0;
  #endif
  	}
  	if (radeon_modeset == 1) {
  		DRM_INFO("radeon kernel modesetting enabled.\n");
  		driver = &kms_driver;
  		driver->driver_features |= DRIVER_MODESET;
  		driver->num_ioctls = radeon_max_kms_ioctl;
  		radeon_register_atpx_handler();
  	}
  	/* if the vga console setting is enabled still
  	 * let modprobe override it */
  	return drm_init(driver);
  }
  
  static void __exit radeon_exit(void)
  {
  	drm_exit(driver);
  	radeon_unregister_atpx_handler();
  }
  
  module_init(radeon_init);
  module_exit(radeon_exit);
  
  MODULE_AUTHOR(DRIVER_AUTHOR);
  MODULE_DESCRIPTION(DRIVER_DESC);
  MODULE_LICENSE("GPL and additional rights");
  