Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / gpu / drm / radeon / radeon_drv.c
diff --git a/kernel/drivers/gpu/drm/radeon/radeon_drv.c b/kernel/drivers/gpu/drm/radeon/radeon_drv.c
new file mode 100644 (file)
index 0000000..7d620d4
--- /dev/null
@@ -0,0 +1,687 @@
+/**
+ * \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 <drm/drmP.h>
+#include <drm/radeon_drm.h>
+#include "radeon_drv.h"
+
+#include <drm/drm_pciids.h>
+#include <linux/console.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/vga_switcheroo.h>
+#include <drm/drm_gem.h>
+
+#include "drm_crtc_helper.h"
+#include "radeon_kfd.h"
+
+/*
+ * KMS wrapper.
+ * - 2.0.0 - initial interface
+ * - 2.1.0 - add square tiling interface
+ * - 2.2.0 - add r6xx/r7xx const buffer support
+ * - 2.3.0 - add MSPOS + 3D texture + r500 VAP regs
+ * - 2.4.0 - add crtc id query
+ * - 2.5.0 - add get accel 2 to work around ddx breakage for evergreen
+ * - 2.6.0 - add tiling config query (r6xx+), add initial HiZ support (r300->r500)
+ *   2.7.0 - fixups for r600 2D tiling support. (no external ABI change), add eg dyn gpr regs
+ *   2.8.0 - pageflip support, r500 US_FORMAT regs. r500 ARGB2101010 colorbuf, r300->r500 CMASK, clock crystal query
+ *   2.9.0 - r600 tiling (s3tc,rgtc) working, SET_PREDICATION packet 3 on r600 + eg, backend query
+ *   2.10.0 - fusion 2D tiling
+ *   2.11.0 - backend map, initial compute support for the CS checker
+ *   2.12.0 - RADEON_CS_KEEP_TILING_FLAGS
+ *   2.13.0 - virtual memory support, streamout
+ *   2.14.0 - add evergreen tiling informations
+ *   2.15.0 - add max_pipes query
+ *   2.16.0 - fix evergreen 2D tiled surface calculation
+ *   2.17.0 - add STRMOUT_BASE_UPDATE for r7xx
+ *   2.18.0 - r600-eg: allow "invalid" DB formats
+ *   2.19.0 - r600-eg: MSAA textures
+ *   2.20.0 - r600-si: RADEON_INFO_TIMESTAMP query
+ *   2.21.0 - r600-r700: FMASK and CMASK
+ *   2.22.0 - r600 only: RESOLVE_BOX allowed
+ *   2.23.0 - allow STRMOUT_BASE_UPDATE on RS780 and RS880
+ *   2.24.0 - eg only: allow MIP_ADDRESS=0 for MSAA textures
+ *   2.25.0 - eg+: new info request for num SE and num SH
+ *   2.26.0 - r600-eg: fix htile size computation
+ *   2.27.0 - r600-SI: Add CS ioctl support for async DMA
+ *   2.28.0 - r600-eg: Add MEM_WRITE packet support
+ *   2.29.0 - R500 FP16 color clear registers
+ *   2.30.0 - fix for FMASK texturing
+ *   2.31.0 - Add fastfb support for rs690
+ *   2.32.0 - new info request for rings working
+ *   2.33.0 - Add SI tiling mode array query
+ *   2.34.0 - Add CIK tiling mode array query
+ *   2.35.0 - Add CIK macrotile mode array query
+ *   2.36.0 - Fix CIK DCE tiling setup
+ *   2.37.0 - allow GS ring setup on r6xx/r7xx
+ *   2.38.0 - RADEON_GEM_OP (GET_INITIAL_DOMAIN, SET_INITIAL_DOMAIN),
+ *            CIK: 1D and linear tiling modes contain valid PIPE_CONFIG
+ *   2.39.0 - Add INFO query for number of active CUs
+ *   2.40.0 - Add RADEON_GEM_GTT_WC/UC, flush HDP cache before submitting
+ *            CS to GPU on >= r600
+ *   2.41.0 - evergreen/cayman: Add SET_BASE/DRAW_INDIRECT command parsing support
+ *   2.42.0 - Add VCE/VUI (Video Usability Information) support
+ */
+#define KMS_DRIVER_MAJOR       2
+#define KMS_DRIVER_MINOR       42
+#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);
+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, bool suspend, bool fbcon);
+int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon);
+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);
+int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
+                                   int *max_error,
+                                   struct timeval *vblank_time,
+                                   unsigned flags);
+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(int irq, void *arg);
+void radeon_gem_object_free(struct drm_gem_object *obj);
+int radeon_gem_object_open(struct drm_gem_object *obj,
+                               struct drm_file *file_priv);
+void radeon_gem_object_close(struct drm_gem_object *obj,
+                               struct drm_file *file_priv);
+struct dma_buf *radeon_gem_prime_export(struct drm_device *dev,
+                                       struct drm_gem_object *gobj,
+                                       int flags);
+extern int radeon_get_crtc_scanoutpos(struct drm_device *dev, int crtc,
+                                     unsigned int flags,
+                                     int *vpos, int *hpos, ktime_t *stime,
+                                     ktime_t *etime);
+extern bool radeon_is_px(struct drm_device *dev);
+extern const struct drm_ioctl_desc radeon_ioctls_kms[];
+extern int radeon_max_kms_ioctl;
+int radeon_mmap(struct file *filp, struct vm_area_struct *vma);
+int radeon_mode_dumb_mmap(struct drm_file *filp,
+                         struct drm_device *dev,
+                         uint32_t handle, uint64_t *offset_p);
+int radeon_mode_dumb_create(struct drm_file *file_priv,
+                           struct drm_device *dev,
+                           struct drm_mode_create_dumb *args);
+struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj);
+struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
+                                                       struct dma_buf_attachment *,
+                                                       struct sg_table *sg);
+int radeon_gem_prime_pin(struct drm_gem_object *obj);
+void radeon_gem_prime_unpin(struct drm_gem_object *obj);
+struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *);
+void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
+void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
+extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd,
+                                   unsigned long arg);
+
+#if defined(CONFIG_DEBUG_FS)
+int radeon_debugfs_init(struct drm_minor *minor);
+void radeon_debugfs_cleanup(struct drm_minor *minor);
+#endif
+
+/* atpx handler */
+#if defined(CONFIG_VGA_SWITCHEROO)
+void radeon_register_atpx_handler(void);
+void radeon_unregister_atpx_handler(void);
+#else
+static inline void radeon_register_atpx_handler(void) {}
+static inline void radeon_unregister_atpx_handler(void) {}
+#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 = -1; /* auto */
+int radeon_benchmarking = 0;
+int radeon_testing = 0;
+int radeon_connector_table = 0;
+int radeon_tv = 1;
+int radeon_audio = -1;
+int radeon_disp_priority = 0;
+int radeon_hw_i2c = 0;
+int radeon_pcie_gen2 = -1;
+int radeon_msi = -1;
+int radeon_lockup_timeout = 10000;
+int radeon_fastfb = 0;
+int radeon_dpm = -1;
+int radeon_aspm = -1;
+int radeon_runtime_pm = -1;
+int radeon_hard_reset = 0;
+int radeon_vm_size = 8;
+int radeon_vm_block_size = -1;
+int radeon_deep_color = 0;
+int radeon_use_pflipirq = 2;
+int radeon_bapm = -1;
+int radeon_backlight = -1;
+int radeon_auxch = -1;
+int radeon_mst = 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, in megabytes");
+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., -1 = auto)");
+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(audio, "Audio enable (-1 = auto, 0 = disable, 1 = enable)");
+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);
+
+MODULE_PARM_DESC(pcie_gen2, "PCIE Gen2 mode (-1 = auto, 0 = disable, 1 = enable)");
+module_param_named(pcie_gen2, radeon_pcie_gen2, int, 0444);
+
+MODULE_PARM_DESC(msi, "MSI support (1 = enable, 0 = disable, -1 = auto)");
+module_param_named(msi, radeon_msi, int, 0444);
+
+MODULE_PARM_DESC(lockup_timeout, "GPU lockup timeout in ms (default 10000 = 10 seconds, 0 = disable)");
+module_param_named(lockup_timeout, radeon_lockup_timeout, int, 0444);
+
+MODULE_PARM_DESC(fastfb, "Direct FB access for IGP chips (0 = disable, 1 = enable)");
+module_param_named(fastfb, radeon_fastfb, int, 0444);
+
+MODULE_PARM_DESC(dpm, "DPM support (1 = enable, 0 = disable, -1 = auto)");
+module_param_named(dpm, radeon_dpm, int, 0444);
+
+MODULE_PARM_DESC(aspm, "ASPM support (1 = enable, 0 = disable, -1 = auto)");
+module_param_named(aspm, radeon_aspm, int, 0444);
+
+MODULE_PARM_DESC(runpm, "PX runtime pm (1 = force enable, 0 = disable, -1 = PX only default)");
+module_param_named(runpm, radeon_runtime_pm, int, 0444);
+
+MODULE_PARM_DESC(hard_reset, "PCI config reset (1 = force enable, 0 = disable (default))");
+module_param_named(hard_reset, radeon_hard_reset, int, 0444);
+
+MODULE_PARM_DESC(vm_size, "VM address space size in gigabytes (default 4GB)");
+module_param_named(vm_size, radeon_vm_size, int, 0444);
+
+MODULE_PARM_DESC(vm_block_size, "VM page table size in bits (default depending on vm_size)");
+module_param_named(vm_block_size, radeon_vm_block_size, int, 0444);
+
+MODULE_PARM_DESC(deep_color, "Deep Color support (1 = enable, 0 = disable (default))");
+module_param_named(deep_color, radeon_deep_color, int, 0444);
+
+MODULE_PARM_DESC(use_pflipirq, "Pflip irqs for pageflip completion (0 = disable, 1 = as fallback, 2 = exclusive (default))");
+module_param_named(use_pflipirq, radeon_use_pflipirq, int, 0444);
+
+MODULE_PARM_DESC(bapm, "BAPM support (1 = enable, 0 = disable, -1 = auto)");
+module_param_named(bapm, radeon_bapm, int, 0444);
+
+MODULE_PARM_DESC(backlight, "backlight support (1 = enable, 0 = disable, -1 = auto)");
+module_param_named(backlight, radeon_backlight, int, 0444);
+
+MODULE_PARM_DESC(auxch, "Use native auxch experimental support (1 = enable, 0 = disable, -1 = auto)");
+module_param_named(auxch, radeon_auxch, int, 0444);
+
+MODULE_PARM_DESC(mst, "DisplayPort MST experimental support (1 = enable, 0 = disable)");
+module_param_named(mst, radeon_mst, int, 0444);
+
+static struct pci_device_id pciidlist[] = {
+       radeon_PCI_IDS
+};
+
+MODULE_DEVICE_TABLE(pci, pciidlist);
+
+#ifdef CONFIG_DRM_RADEON_UMS
+
+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 const struct file_operations radeon_driver_old_fops = {
+       .owner = THIS_MODULE,
+       .open = drm_open,
+       .release = drm_release,
+       .unlocked_ioctl = drm_ioctl,
+       .mmap = drm_legacy_mmap,
+       .poll = drm_poll,
+       .read = drm_read,
+#ifdef CONFIG_COMPAT
+       .compat_ioctl = radeon_compat_ioctl,
+#endif
+       .llseek = noop_llseek,
+};
+
+static struct drm_driver driver_old = {
+       .driver_features =
+           DRIVER_USE_AGP | 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,
+       .set_busid = drm_pci_set_busid,
+       .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,
+       .ioctls = radeon_ioctls,
+       .dma_ioctl = radeon_cp_buffers,
+       .fops = &radeon_driver_old_fops,
+       .name = DRIVER_NAME,
+       .desc = DRIVER_DESC,
+       .date = DRIVER_DATE,
+       .major = DRIVER_MAJOR,
+       .minor = DRIVER_MINOR,
+       .patchlevel = DRIVER_PATCHLEVEL,
+};
+
+#endif
+
+static struct drm_driver kms_driver;
+
+static int radeon_kick_out_firmware_fb(struct pci_dev *pdev)
+{
+       struct apertures_struct *ap;
+       bool primary = false;
+
+       ap = alloc_apertures(1);
+       if (!ap)
+               return -ENOMEM;
+
+       ap->ranges[0].base = pci_resource_start(pdev, 0);
+       ap->ranges[0].size = pci_resource_len(pdev, 0);
+
+#ifdef CONFIG_X86
+       primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
+#endif
+       remove_conflicting_framebuffers(ap, "radeondrmfb", primary);
+       kfree(ap);
+
+       return 0;
+}
+
+static int radeon_pci_probe(struct pci_dev *pdev,
+                           const struct pci_device_id *ent)
+{
+       int ret;
+
+       /* Get rid of things like offb */
+       ret = radeon_kick_out_firmware_fb(pdev);
+       if (ret)
+               return ret;
+
+       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_pmops_suspend(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct drm_device *drm_dev = pci_get_drvdata(pdev);
+       return radeon_suspend_kms(drm_dev, true, true);
+}
+
+static int radeon_pmops_resume(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct drm_device *drm_dev = pci_get_drvdata(pdev);
+       return radeon_resume_kms(drm_dev, true, true);
+}
+
+static int radeon_pmops_freeze(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct drm_device *drm_dev = pci_get_drvdata(pdev);
+       return radeon_suspend_kms(drm_dev, false, true);
+}
+
+static int radeon_pmops_thaw(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct drm_device *drm_dev = pci_get_drvdata(pdev);
+       return radeon_resume_kms(drm_dev, false, true);
+}
+
+static int radeon_pmops_runtime_suspend(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct drm_device *drm_dev = pci_get_drvdata(pdev);
+       int ret;
+
+       if (!radeon_is_px(drm_dev)) {
+               pm_runtime_forbid(dev);
+               return -EBUSY;
+       }
+
+       drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
+       drm_kms_helper_poll_disable(drm_dev);
+       vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_OFF);
+
+       ret = radeon_suspend_kms(drm_dev, false, false);
+       pci_save_state(pdev);
+       pci_disable_device(pdev);
+       pci_ignore_hotplug(pdev);
+       pci_set_power_state(pdev, PCI_D3cold);
+       drm_dev->switch_power_state = DRM_SWITCH_POWER_DYNAMIC_OFF;
+
+       return 0;
+}
+
+static int radeon_pmops_runtime_resume(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct drm_device *drm_dev = pci_get_drvdata(pdev);
+       int ret;
+
+       if (!radeon_is_px(drm_dev))
+               return -EINVAL;
+
+       drm_dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
+
+       pci_set_power_state(pdev, PCI_D0);
+       pci_restore_state(pdev);
+       ret = pci_enable_device(pdev);
+       if (ret)
+               return ret;
+       pci_set_master(pdev);
+
+       ret = radeon_resume_kms(drm_dev, false, false);
+       drm_kms_helper_poll_enable(drm_dev);
+       vga_switcheroo_set_dynamic_switch(pdev, VGA_SWITCHEROO_ON);
+       drm_dev->switch_power_state = DRM_SWITCH_POWER_ON;
+       return 0;
+}
+
+static int radeon_pmops_runtime_idle(struct device *dev)
+{
+       struct pci_dev *pdev = to_pci_dev(dev);
+       struct drm_device *drm_dev = pci_get_drvdata(pdev);
+       struct drm_crtc *crtc;
+
+       if (!radeon_is_px(drm_dev)) {
+               pm_runtime_forbid(dev);
+               return -EBUSY;
+       }
+
+       list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
+               if (crtc->enabled) {
+                       DRM_DEBUG_DRIVER("failing to power off - crtc active\n");
+                       return -EBUSY;
+               }
+       }
+
+       pm_runtime_mark_last_busy(dev);
+       pm_runtime_autosuspend(dev);
+       /* we don't want the main rpm_idle to call suspend - we want to autosuspend */
+       return 1;
+}
+
+long radeon_drm_ioctl(struct file *filp,
+                     unsigned int cmd, unsigned long arg)
+{
+       struct drm_file *file_priv = filp->private_data;
+       struct drm_device *dev;
+       long ret;
+       dev = file_priv->minor->dev;
+       ret = pm_runtime_get_sync(dev->dev);
+       if (ret < 0)
+               return ret;
+
+       ret = drm_ioctl(filp, cmd, arg);
+       
+       pm_runtime_mark_last_busy(dev->dev);
+       pm_runtime_put_autosuspend(dev->dev);
+       return ret;
+}
+
+static const struct dev_pm_ops radeon_pm_ops = {
+       .suspend = radeon_pmops_suspend,
+       .resume = radeon_pmops_resume,
+       .freeze = radeon_pmops_freeze,
+       .thaw = radeon_pmops_thaw,
+       .poweroff = radeon_pmops_freeze,
+       .restore = radeon_pmops_resume,
+       .runtime_suspend = radeon_pmops_runtime_suspend,
+       .runtime_resume = radeon_pmops_runtime_resume,
+       .runtime_idle = radeon_pmops_runtime_idle,
+};
+
+static const struct file_operations radeon_driver_kms_fops = {
+       .owner = THIS_MODULE,
+       .open = drm_open,
+       .release = drm_release,
+       .unlocked_ioctl = radeon_drm_ioctl,
+       .mmap = radeon_mmap,
+       .poll = drm_poll,
+       .read = drm_read,
+#ifdef CONFIG_COMPAT
+       .compat_ioctl = radeon_kms_compat_ioctl,
+#endif
+};
+
+static struct drm_driver kms_driver = {
+       .driver_features =
+           DRIVER_USE_AGP |
+           DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
+           DRIVER_PRIME | DRIVER_RENDER,
+       .load = radeon_driver_load_kms,
+       .open = radeon_driver_open_kms,
+       .preclose = radeon_driver_preclose_kms,
+       .postclose = radeon_driver_postclose_kms,
+       .lastclose = radeon_driver_lastclose_kms,
+       .set_busid = drm_pci_set_busid,
+       .unload = radeon_driver_unload_kms,
+       .get_vblank_counter = radeon_get_vblank_counter_kms,
+       .enable_vblank = radeon_enable_vblank_kms,
+       .disable_vblank = radeon_disable_vblank_kms,
+       .get_vblank_timestamp = radeon_get_vblank_timestamp_kms,
+       .get_scanout_position = radeon_get_crtc_scanoutpos,
+#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,
+       .ioctls = radeon_ioctls_kms,
+       .gem_free_object = radeon_gem_object_free,
+       .gem_open_object = radeon_gem_object_open,
+       .gem_close_object = radeon_gem_object_close,
+       .dumb_create = radeon_mode_dumb_create,
+       .dumb_map_offset = radeon_mode_dumb_mmap,
+       .dumb_destroy = drm_gem_dumb_destroy,
+       .fops = &radeon_driver_kms_fops,
+
+       .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+       .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+       .gem_prime_export = radeon_gem_prime_export,
+       .gem_prime_import = drm_gem_prime_import,
+       .gem_prime_pin = radeon_gem_prime_pin,
+       .gem_prime_unpin = radeon_gem_prime_unpin,
+       .gem_prime_res_obj = radeon_gem_prime_res_obj,
+       .gem_prime_get_sg_table = radeon_gem_prime_get_sg_table,
+       .gem_prime_import_sg_table = radeon_gem_prime_import_sg_table,
+       .gem_prime_vmap = radeon_gem_prime_vmap,
+       .gem_prime_vunmap = radeon_gem_prime_vunmap,
+
+       .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 struct pci_driver *pdriver;
+
+#ifdef CONFIG_DRM_RADEON_UMS
+static struct pci_driver radeon_pci_driver = {
+       .name = DRIVER_NAME,
+       .id_table = pciidlist,
+};
+#endif
+
+static struct pci_driver radeon_kms_pci_driver = {
+       .name = DRIVER_NAME,
+       .id_table = pciidlist,
+       .probe = radeon_pci_probe,
+       .remove = radeon_pci_remove,
+       .driver.pm = &radeon_pm_ops,
+};
+
+static int __init radeon_init(void)
+{
+#ifdef CONFIG_VGA_CONSOLE
+       if (vgacon_text_force() && radeon_modeset == -1) {
+               DRM_INFO("VGACON disable radeon kernel modesetting.\n");
+               radeon_modeset = 0;
+       }
+#endif
+       /* set to modesetting by default if not nomodeset */
+       if (radeon_modeset == -1)
+               radeon_modeset = 1;
+
+       if (radeon_modeset == 1) {
+               DRM_INFO("radeon kernel modesetting enabled.\n");
+               driver = &kms_driver;
+               pdriver = &radeon_kms_pci_driver;
+               driver->driver_features |= DRIVER_MODESET;
+               driver->num_ioctls = radeon_max_kms_ioctl;
+               radeon_register_atpx_handler();
+
+       } else {
+#ifdef CONFIG_DRM_RADEON_UMS
+               DRM_INFO("radeon userspace modesetting enabled.\n");
+               driver = &driver_old;
+               pdriver = &radeon_pci_driver;
+               driver->driver_features &= ~DRIVER_MODESET;
+               driver->num_ioctls = radeon_max_ioctl;
+#else
+               DRM_ERROR("No UMS support in radeon module!\n");
+               return -EINVAL;
+#endif
+       }
+
+       radeon_kfd_init();
+
+       /* let modprobe override vga console setting */
+       return drm_pci_init(driver, pdriver);
+}
+
+static void __exit radeon_exit(void)
+{
+       radeon_kfd_fini();
+       drm_pci_exit(driver, pdriver);
+       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");