/* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*- */ /* * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * 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, sub license, 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 NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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 #include #include #include "i915_drv.h" #include "i915_trace.h" #include "intel_drv.h" #include #include #include static int i915_modeset __read_mostly = -1; module_param_named(modeset, i915_modeset, int, 0400); MODULE_PARM_DESC(modeset, "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, " "1=on, -1=force vga console preference [default])"); unsigned int i915_fbpercrtc __always_unused = 0; module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400); int i915_panel_ignore_lid __read_mostly = 1; module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600); MODULE_PARM_DESC(panel_ignore_lid, "Override lid status (0=autodetect, 1=autodetect disabled [default], " "-1=force lid closed, -2=force lid open)"); unsigned int i915_powersave __read_mostly = 1; module_param_named(powersave, i915_powersave, int, 0600); MODULE_PARM_DESC(powersave, "Enable powersavings, fbc, downclocking, etc. (default: true)"); int i915_semaphores __read_mostly = -1; module_param_named(semaphores, i915_semaphores, int, 0600); MODULE_PARM_DESC(semaphores, "Use semaphores for inter-ring sync (default: -1 (use per-chip defaults))"); int i915_enable_rc6 __read_mostly = -1; module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0400); MODULE_PARM_DESC(i915_enable_rc6, "Enable power-saving render C-state 6. " "Different stages can be selected via bitmask values " "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). " "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. " "default: -1 (use per-chip default)"); int i915_enable_fbc __read_mostly = -1; module_param_named(i915_enable_fbc, i915_enable_fbc, int, 0600); MODULE_PARM_DESC(i915_enable_fbc, "Enable frame buffer compression for power savings " "(default: -1 (use per-chip default))"); unsigned int i915_lvds_downclock __read_mostly = 0; module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400); MODULE_PARM_DESC(lvds_downclock, "Use panel (LVDS/eDP) downclocking for power savings " "(default: false)"); int i915_lvds_channel_mode __read_mostly; module_param_named(lvds_channel_mode, i915_lvds_channel_mode, int, 0600); MODULE_PARM_DESC(lvds_channel_mode, "Specify LVDS channel mode " "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)"); int i915_panel_use_ssc __read_mostly = -1; module_param_named(lvds_use_ssc, i915_panel_use_ssc, int, 0600); MODULE_PARM_DESC(lvds_use_ssc, "Use Spread Spectrum Clock with panels [LVDS/eDP] " "(default: auto from VBT)"); int i915_vbt_sdvo_panel_type __read_mostly = -1; module_param_named(vbt_sdvo_panel_type, i915_vbt_sdvo_panel_type, int, 0600); MODULE_PARM_DESC(vbt_sdvo_panel_type, "Override/Ignore selection of SDVO panel mode in the VBT " "(-2=ignore, -1=auto [default], index in VBT BIOS table)"); static bool i915_try_reset __read_mostly = true; module_param_named(reset, i915_try_reset, bool, 0600); MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)"); bool i915_enable_hangcheck __read_mostly = true; module_param_named(enable_hangcheck, i915_enable_hangcheck, bool, 0644); MODULE_PARM_DESC(enable_hangcheck, "Periodically check GPU activity for detecting hangs. " "WARNING: Disabling this can cause system wide hangs. " "(default: true)"); int i915_enable_ppgtt __read_mostly = -1; module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, int, 0600); MODULE_PARM_DESC(i915_enable_ppgtt, "Enable PPGTT (default: true)"); unsigned int i915_preliminary_hw_support __read_mostly = 0; module_param_named(preliminary_hw_support, i915_preliminary_hw_support, int, 0600); MODULE_PARM_DESC(preliminary_hw_support, "Enable preliminary hardware support. " "Enable Haswell and ValleyView Support. " "(default: false)"); static struct drm_driver driver; extern int intel_agp_enabled; #define INTEL_VGA_DEVICE(id, info) { \ .class = PCI_BASE_CLASS_DISPLAY << 16, \ .class_mask = 0xff0000, \ .vendor = 0x8086, \ .device = id, \ .subvendor = PCI_ANY_ID, \ .subdevice = PCI_ANY_ID, \ .driver_data = (unsigned long) info } static const struct intel_device_info intel_i830_info = { .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .has_overlay = 1, .overlay_needs_physical = 1, }; static const struct intel_device_info intel_845g_info = { .gen = 2, .has_overlay = 1, .overlay_needs_physical = 1, }; static const struct intel_device_info intel_i85x_info = { .gen = 2, .is_i85x = 1, .is_mobile = 1, .cursor_needs_physical = 1, .has_overlay = 1, .overlay_needs_physical = 1, }; static const struct intel_device_info intel_i865g_info = { .gen = 2, .has_overlay = 1, .overlay_needs_physical = 1, }; static const struct intel_device_info intel_i915g_info = { .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .has_overlay = 1, .overlay_needs_physical = 1, }; static const struct intel_device_info intel_i915gm_info = { .gen = 3, .is_mobile = 1, .cursor_needs_physical = 1, .has_overlay = 1, .overlay_needs_physical = 1, .supports_tv = 1, }; static const struct intel_device_info intel_i945g_info = { .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .has_overlay = 1, .overlay_needs_physical = 1, }; static const struct intel_device_info intel_i945gm_info = { .gen = 3, .is_i945gm = 1, .is_mobile = 1, .has_hotplug = 1, .cursor_needs_physical = 1, .has_overlay = 1, .overlay_needs_physical = 1, .supports_tv = 1, }; static const struct intel_device_info intel_i965g_info = { .gen = 4, .is_broadwater = 1, .has_hotplug = 1, .has_overlay = 1, }; static const struct intel_device_info intel_i965gm_info = { .gen = 4, .is_crestline = 1, .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1, .has_overlay = 1, .supports_tv = 1, }; static const struct intel_device_info intel_g33_info = { .gen = 3, .is_g33 = 1, .need_gfx_hws = 1, .has_hotplug = 1, .has_overlay = 1, }; static const struct intel_device_info intel_g45_info = { .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .has_pipe_cxsr = 1, .has_hotplug = 1, .has_bsd_ring = 1, }; static const struct intel_device_info intel_gm45_info = { .gen = 4, .is_g4x = 1, .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_pipe_cxsr = 1, .has_hotplug = 1, .supports_tv = 1, .has_bsd_ring = 1, }; static const struct intel_device_info intel_pineview_info = { .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .need_gfx_hws = 1, .has_hotplug = 1, .has_overlay = 1, }; static const struct intel_device_info intel_ironlake_d_info = { .gen = 5, .need_gfx_hws = 1, .has_hotplug = 1, .has_bsd_ring = 1, }; static const struct intel_device_info intel_ironlake_m_info = { .gen = 5, .is_mobile = 1, .need_gfx_hws = 1, .has_hotplug = 1, .has_fbc = 1, .has_bsd_ring = 1, }; static const struct intel_device_info intel_sandybridge_d_info = { .gen = 6, .need_gfx_hws = 1, .has_hotplug = 1, .has_bsd_ring = 1, .has_blt_ring = 1, .has_llc = 1, .has_force_wake = 1, }; static const struct intel_device_info intel_sandybridge_m_info = { .gen = 6, .is_mobile = 1, .need_gfx_hws = 1, .has_hotplug = 1, .has_fbc = 1, .has_bsd_ring = 1, .has_blt_ring = 1, .has_llc = 1, .has_force_wake = 1, }; static const struct intel_device_info intel_ivybridge_d_info = { .is_ivybridge = 1, .gen = 7, .need_gfx_hws = 1, .has_hotplug = 1, .has_bsd_ring = 1, .has_blt_ring = 1, .has_llc = 1, .has_force_wake = 1, }; static const struct intel_device_info intel_ivybridge_m_info = { .is_ivybridge = 1, .gen = 7, .is_mobile = 1, .need_gfx_hws = 1, .has_hotplug = 1, .has_fbc = 0, /* FBC is not enabled on Ivybridge mobile yet */ .has_bsd_ring = 1, .has_blt_ring = 1, .has_llc = 1, .has_force_wake = 1, }; static const struct intel_device_info intel_valleyview_m_info = { .gen = 7, .is_mobile = 1, .need_gfx_hws = 1, .has_hotplug = 1, .has_fbc = 0, .has_bsd_ring = 1, .has_blt_ring = 1, .is_valleyview = 1, }; static const struct intel_device_info intel_valleyview_d_info = { .gen = 7, .need_gfx_hws = 1, .has_hotplug = 1, .has_fbc = 0, .has_bsd_ring = 1, .has_blt_ring = 1, .is_valleyview = 1, }; static const struct intel_device_info intel_haswell_d_info = { .is_haswell = 1, .gen = 7, .need_gfx_hws = 1, .has_hotplug = 1, .has_bsd_ring = 1, .has_blt_ring = 1, .has_llc = 1, .has_force_wake = 1, }; static const struct intel_device_info intel_haswell_m_info = { .is_haswell = 1, .gen = 7, .is_mobile = 1, .need_gfx_hws = 1, .has_hotplug = 1, .has_bsd_ring = 1, .has_blt_ring = 1, .has_llc = 1, .has_force_wake = 1, }; static const struct pci_device_id pciidlist[] = { /* aka */ INTEL_VGA_DEVICE(0x3577, &intel_i830_info), /* I830_M */ INTEL_VGA_DEVICE(0x2562, &intel_845g_info), /* 845_G */ INTEL_VGA_DEVICE(0x3582, &intel_i85x_info), /* I855_GM */ INTEL_VGA_DEVICE(0x358e, &intel_i85x_info), INTEL_VGA_DEVICE(0x2572, &intel_i865g_info), /* I865_G */ INTEL_VGA_DEVICE(0x2582, &intel_i915g_info), /* I915_G */ INTEL_VGA_DEVICE(0x258a, &intel_i915g_info), /* E7221_G */ INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info), /* I915_GM */ INTEL_VGA_DEVICE(0x2772, &intel_i945g_info), /* I945_G */ INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info), /* I945_GM */ INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info), /* I945_GME */ INTEL_VGA_DEVICE(0x2972, &intel_i965g_info), /* I946_GZ */ INTEL_VGA_DEVICE(0x2982, &intel_i965g_info), /* G35_G */ INTEL_VGA_DEVICE(0x2992, &intel_i965g_info), /* I965_Q */ INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info), /* I965_G */ INTEL_VGA_DEVICE(0x29b2, &intel_g33_info), /* Q35_G */ INTEL_VGA_DEVICE(0x29c2, &intel_g33_info), /* G33_G */ INTEL_VGA_DEVICE(0x29d2, &intel_g33_info), /* Q33_G */ INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info), /* I965_GM */ INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info), /* I965_GME */ INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info), /* GM45_G */ INTEL_VGA_DEVICE(0x2e02, &intel_g45_info), /* IGD_E_G */ INTEL_VGA_DEVICE(0x2e12, &intel_g45_info), /* Q45_G */ INTEL_VGA_DEVICE(0x2e22, &intel_g45_info), /* G45_G */ INTEL_VGA_DEVICE(0x2e32, &intel_g45_info), /* G41_G */ INTEL_VGA_DEVICE(0x2e42, &intel_g45_info), /* B43_G */ INTEL_VGA_DEVICE(0x2e92, &intel_g45_info), /* B43_G.1 */ INTEL_VGA_DEVICE(0xa001, &intel_pineview_info), INTEL_VGA_DEVICE(0xa011, &intel_pineview_info), INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info), INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info), INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info), INTEL_VGA_DEVICE(0x0112, &intel_sandybridge_d_info), INTEL_VGA_DEVICE(0x0122, &intel_sandybridge_d_info), INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info), INTEL_VGA_DEVICE(0x0116, &intel_sandybridge_m_info), INTEL_VGA_DEVICE(0x0126, &intel_sandybridge_m_info), INTEL_VGA_DEVICE(0x010A, &intel_sandybridge_d_info), INTEL_VGA_DEVICE(0x0156, &intel_ivybridge_m_info), /* GT1 mobile */ INTEL_VGA_DEVICE(0x0166, &intel_ivybridge_m_info), /* GT2 mobile */ INTEL_VGA_DEVICE(0x0152, &intel_ivybridge_d_info), /* GT1 desktop */ INTEL_VGA_DEVICE(0x0162, &intel_ivybridge_d_info), /* GT2 desktop */ INTEL_VGA_DEVICE(0x015a, &intel_ivybridge_d_info), /* GT1 server */ INTEL_VGA_DEVICE(0x016a, &intel_ivybridge_d_info), /* GT2 server */ INTEL_VGA_DEVICE(0x0402, &intel_haswell_d_info), /* GT1 desktop */ INTEL_VGA_DEVICE(0x0412, &intel_haswell_d_info), /* GT2 desktop */ INTEL_VGA_DEVICE(0x0422, &intel_haswell_d_info), /* GT2 desktop */ INTEL_VGA_DEVICE(0x040a, &intel_haswell_d_info), /* GT1 server */ INTEL_VGA_DEVICE(0x041a, &intel_haswell_d_info), /* GT2 server */ INTEL_VGA_DEVICE(0x042a, &intel_haswell_d_info), /* GT2 server */ INTEL_VGA_DEVICE(0x0406, &intel_haswell_m_info), /* GT1 mobile */ INTEL_VGA_DEVICE(0x0416, &intel_haswell_m_info), /* GT2 mobile */ INTEL_VGA_DEVICE(0x0426, &intel_haswell_m_info), /* GT2 mobile */ INTEL_VGA_DEVICE(0x0C02, &intel_haswell_d_info), /* SDV GT1 desktop */ INTEL_VGA_DEVICE(0x0C12, &intel_haswell_d_info), /* SDV GT2 desktop */ INTEL_VGA_DEVICE(0x0C22, &intel_haswell_d_info), /* SDV GT2 desktop */ INTEL_VGA_DEVICE(0x0C0A, &intel_haswell_d_info), /* SDV GT1 server */ INTEL_VGA_DEVICE(0x0C1A, &intel_haswell_d_info), /* SDV GT2 server */ INTEL_VGA_DEVICE(0x0C2A, &intel_haswell_d_info), /* SDV GT2 server */ INTEL_VGA_DEVICE(0x0C06, &intel_haswell_m_info), /* SDV GT1 mobile */ INTEL_VGA_DEVICE(0x0C16, &intel_haswell_m_info), /* SDV GT2 mobile */ INTEL_VGA_DEVICE(0x0C26, &intel_haswell_m_info), /* SDV GT2 mobile */ INTEL_VGA_DEVICE(0x0A02, &intel_haswell_d_info), /* ULT GT1 desktop */ INTEL_VGA_DEVICE(0x0A12, &intel_haswell_d_info), /* ULT GT2 desktop */ INTEL_VGA_DEVICE(0x0A22, &intel_haswell_d_info), /* ULT GT2 desktop */ INTEL_VGA_DEVICE(0x0A0A, &intel_haswell_d_info), /* ULT GT1 server */ INTEL_VGA_DEVICE(0x0A1A, &intel_haswell_d_info), /* ULT GT2 server */ INTEL_VGA_DEVICE(0x0A2A, &intel_haswell_d_info), /* ULT GT2 server */ INTEL_VGA_DEVICE(0x0A06, &intel_haswell_m_info), /* ULT GT1 mobile */ INTEL_VGA_DEVICE(0x0A16, &intel_haswell_m_info), /* ULT GT2 mobile */ INTEL_VGA_DEVICE(0x0A26, &intel_haswell_m_info), /* ULT GT2 mobile */ INTEL_VGA_DEVICE(0x0D12, &intel_haswell_d_info), /* CRW GT1 desktop */ INTEL_VGA_DEVICE(0x0D22, &intel_haswell_d_info), /* CRW GT2 desktop */ INTEL_VGA_DEVICE(0x0D32, &intel_haswell_d_info), /* CRW GT2 desktop */ INTEL_VGA_DEVICE(0x0D1A, &intel_haswell_d_info), /* CRW GT1 server */ INTEL_VGA_DEVICE(0x0D2A, &intel_haswell_d_info), /* CRW GT2 server */ INTEL_VGA_DEVICE(0x0D3A, &intel_haswell_d_info), /* CRW GT2 server */ INTEL_VGA_DEVICE(0x0D16, &intel_haswell_m_info), /* CRW GT1 mobile */ INTEL_VGA_DEVICE(0x0D26, &intel_haswell_m_info), /* CRW GT2 mobile */ INTEL_VGA_DEVICE(0x0D36, &intel_haswell_m_info), /* CRW GT2 mobile */ INTEL_VGA_DEVICE(0x0f30, &intel_valleyview_m_info), INTEL_VGA_DEVICE(0x0157, &intel_valleyview_m_info), INTEL_VGA_DEVICE(0x0155, &intel_valleyview_d_info), {0, 0, 0} }; #if defined(CONFIG_DRM_I915_KMS) MODULE_DEVICE_TABLE(pci, pciidlist); #endif void intel_detect_pch(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; struct pci_dev *pch; /* * The reason to probe ISA bridge instead of Dev31:Fun0 is to * make graphics device passthrough work easy for VMM, that only * need to expose ISA bridge to let driver know the real hardware * underneath. This is a requirement from virtualization team. */ pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); if (pch) { if (pch->vendor == PCI_VENDOR_ID_INTEL) { unsigned short id; id = pch->device & INTEL_PCH_DEVICE_ID_MASK; dev_priv->pch_id = id; if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) { dev_priv->pch_type = PCH_IBX; dev_priv->num_pch_pll = 2; DRM_DEBUG_KMS("Found Ibex Peak PCH\n"); WARN_ON(!IS_GEN5(dev)); } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) { dev_priv->pch_type = PCH_CPT; dev_priv->num_pch_pll = 2; DRM_DEBUG_KMS("Found CougarPoint PCH\n"); WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) { /* PantherPoint is CPT compatible */ dev_priv->pch_type = PCH_CPT; dev_priv->num_pch_pll = 2; DRM_DEBUG_KMS("Found PatherPoint PCH\n"); WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev))); } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) { dev_priv->pch_type = PCH_LPT; dev_priv->num_pch_pll = 0; DRM_DEBUG_KMS("Found LynxPoint PCH\n"); WARN_ON(!IS_HASWELL(dev)); } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { dev_priv->pch_type = PCH_LPT; dev_priv->num_pch_pll = 0; DRM_DEBUG_KMS("Found LynxPoint LP PCH\n"); WARN_ON(!IS_HASWELL(dev)); } BUG_ON(dev_priv->num_pch_pll > I915_NUM_PLLS); } pci_dev_put(pch); } } bool i915_semaphore_is_enabled(struct drm_device *dev) { if (INTEL_INFO(dev)->gen < 6) return 0; if (i915_semaphores >= 0) return i915_semaphores; #ifdef CONFIG_INTEL_IOMMU /* Enable semaphores on SNB when IO remapping is off */ if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) return false; #endif return 1; } static int i915_drm_freeze(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; drm_kms_helper_poll_disable(dev); pci_save_state(dev->pdev); /* If KMS is active, we do the leavevt stuff here */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { int error = i915_gem_idle(dev); if (error) { dev_err(&dev->pdev->dev, "GEM idle failed, resume might fail\n"); return error; } cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work); intel_modeset_disable(dev); drm_irq_uninstall(dev); } i915_save_state(dev); intel_opregion_fini(dev); /* Modeset on resume, not lid events */ dev_priv->modeset_on_lid = 0; console_lock(); intel_fbdev_set_suspend(dev, 1); console_unlock(); return 0; } int i915_suspend(struct drm_device *dev, pm_message_t state) { int error; if (!dev || !dev->dev_private) { DRM_ERROR("dev: %p\n", dev); DRM_ERROR("DRM not initialized, aborting suspend.\n"); return -ENODEV; } if (state.event == PM_EVENT_PRETHAW) return 0; if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; error = i915_drm_freeze(dev); if (error) return error; if (state.event == PM_EVENT_SUSPEND) { /* Shut down the device */ pci_disable_device(dev->pdev); pci_set_power_state(dev->pdev, PCI_D3hot); } return 0; } void intel_console_resume(struct work_struct *work) { struct drm_i915_private *dev_priv = container_of(work, struct drm_i915_private, console_resume_work); struct drm_device *dev = dev_priv->dev; console_lock(); intel_fbdev_set_suspend(dev, 0); console_unlock(); } static int __i915_drm_thaw(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int error = 0; i915_restore_state(dev); intel_opregion_setup(dev); /* KMS EnterVT equivalent */ if (drm_core_check_feature(dev, DRIVER_MODESET)) { intel_init_pch_refclk(dev); mutex_lock(&dev->struct_mutex); dev_priv->mm.suspended = 0; error = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); intel_modeset_init_hw(dev); intel_modeset_setup_hw_state(dev, false); drm_irq_install(dev); intel_hpd_init(dev); } intel_opregion_init(dev); dev_priv->modeset_on_lid = 0; /* * The console lock can be pretty contented on resume due * to all the printk activity. Try to keep it out of the hot * path of resume if possible. */ if (console_trylock()) { intel_fbdev_set_suspend(dev, 0); console_unlock(); } else { schedule_work(&dev_priv->console_resume_work); } return error; } static int i915_drm_thaw(struct drm_device *dev) { int error = 0; intel_gt_reset(dev); if (drm_core_check_feature(dev, DRIVER_MODESET)) { mutex_lock(&dev->struct_mutex); i915_gem_restore_gtt_mappings(dev); mutex_unlock(&dev->struct_mutex); } __i915_drm_thaw(dev); return error; } int i915_resume(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int ret; if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; if (pci_enable_device(dev->pdev)) return -EIO; pci_set_master(dev->pdev); intel_gt_reset(dev); /* * Platforms with opregion should have sane BIOS, older ones (gen3 and * earlier) need this since the BIOS might clear all our scratch PTEs. */ if (drm_core_check_feature(dev, DRIVER_MODESET) && !dev_priv->opregion.header) { mutex_lock(&dev->struct_mutex); i915_gem_restore_gtt_mappings(dev); mutex_unlock(&dev->struct_mutex); } ret = __i915_drm_thaw(dev); if (ret) return ret; drm_kms_helper_poll_enable(dev); return 0; } static int i8xx_do_reset(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; if (IS_I85X(dev)) return -ENODEV; I915_WRITE(D_STATE, I915_READ(D_STATE) | DSTATE_GFX_RESET_I830); POSTING_READ(D_STATE); if (IS_I830(dev) || IS_845G(dev)) { I915_WRITE(DEBUG_RESET_I830, DEBUG_RESET_DISPLAY | DEBUG_RESET_RENDER | DEBUG_RESET_FULL); POSTING_READ(DEBUG_RESET_I830); msleep(1); I915_WRITE(DEBUG_RESET_I830, 0); POSTING_READ(DEBUG_RESET_I830); } msleep(1); I915_WRITE(D_STATE, I915_READ(D_STATE) & ~DSTATE_GFX_RESET_I830); POSTING_READ(D_STATE); return 0; } static int i965_reset_complete(struct drm_device *dev) { u8 gdrst; pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); return (gdrst & GRDOM_RESET_ENABLE) == 0; } static int i965_do_reset(struct drm_device *dev) { int ret; u8 gdrst; /* * Set the domains we want to reset (GRDOM/bits 2 and 3) as * well as the reset bit (GR/bit 0). Setting the GR bit * triggers the reset; when done, the hardware will clear it. */ pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); pci_write_config_byte(dev->pdev, I965_GDRST, gdrst | GRDOM_RENDER | GRDOM_RESET_ENABLE); ret = wait_for(i965_reset_complete(dev), 500); if (ret) return ret; /* We can't reset render&media without also resetting display ... */ pci_read_config_byte(dev->pdev, I965_GDRST, &gdrst); pci_write_config_byte(dev->pdev, I965_GDRST, gdrst | GRDOM_MEDIA | GRDOM_RESET_ENABLE); return wait_for(i965_reset_complete(dev), 500); } static int ironlake_do_reset(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; u32 gdrst; int ret; gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR); I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, gdrst | GRDOM_RENDER | GRDOM_RESET_ENABLE); ret = wait_for(I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1, 500); if (ret) return ret; /* We can't reset render&media without also resetting display ... */ gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR); I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, gdrst | GRDOM_MEDIA | GRDOM_RESET_ENABLE); return wait_for(I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1, 500); } static int gen6_do_reset(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int ret; unsigned long irqflags; /* Hold gt_lock across reset to prevent any register access * with forcewake not set correctly */ spin_lock_irqsave(&dev_priv->gt_lock, irqflags); /* Reset the chip */ /* GEN6_GDRST is not in the gt power well, no need to check * for fifo space for the write or forcewake the chip for * the read */ I915_WRITE_NOTRACE(GEN6_GDRST, GEN6_GRDOM_FULL); /* Spin waiting for the device to ack the reset request */ ret = wait_for((I915_READ_NOTRACE(GEN6_GDRST) & GEN6_GRDOM_FULL) == 0, 500); /* If reset with a user forcewake, try to restore, otherwise turn it off */ if (dev_priv->forcewake_count) dev_priv->gt.force_wake_get(dev_priv); else dev_priv->gt.force_wake_put(dev_priv); /* Restore fifo count */ dev_priv->gt_fifo_count = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); return ret; } int intel_gpu_reset(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; int ret = -ENODEV; switch (INTEL_INFO(dev)->gen) { case 7: case 6: ret = gen6_do_reset(dev); break; case 5: ret = ironlake_do_reset(dev); break; case 4: ret = i965_do_reset(dev); break; case 2: ret = i8xx_do_reset(dev); break; } /* Also reset the gpu hangman. */ if (dev_priv->stop_rings) { DRM_DEBUG("Simulated gpu hang, resetting stop_rings\n"); dev_priv->stop_rings = 0; if (ret == -ENODEV) { DRM_ERROR("Reset not implemented, but ignoring " "error for simulated gpu hangs\n"); ret = 0; } } return ret; } /** * i915_reset - reset chip after a hang * @dev: drm device to reset * * Reset the chip. Useful if a hang is detected. Returns zero on successful * reset or otherwise an error code. * * Procedure is fairly simple: * - reset the chip using the reset reg * - re-init context state * - re-init hardware status page * - re-init ring buffer * - re-init interrupt state * - re-init display */ int i915_reset(struct drm_device *dev) { drm_i915_private_t *dev_priv = dev->dev_private; int ret; if (!i915_try_reset) return 0; mutex_lock(&dev->struct_mutex); i915_gem_reset(dev); ret = -ENODEV; if (get_seconds() - dev_priv->last_gpu_reset < 5) DRM_ERROR("GPU hanging too fast, declaring wedged!\n"); else ret = intel_gpu_reset(dev); dev_priv->last_gpu_reset = get_seconds(); if (ret) { DRM_ERROR("Failed to reset chip.\n"); mutex_unlock(&dev->struct_mutex); return ret; } /* Ok, now get things going again... */ /* * Everything depends on having the GTT running, so we need to start * there. Fortunately we don't need to do this unless we reset the * chip at a PCI level. * * Next we need to restore the context, but we don't use those * yet either... * * Ring buffer needs to be re-initialized in the KMS case, or if X * was running at the time of the reset (i.e. we weren't VT * switched away). */ if (drm_core_check_feature(dev, DRIVER_MODESET) || !dev_priv->mm.suspended) { struct intel_ring_buffer *ring; int i; dev_priv->mm.suspended = 0; i915_gem_init_swizzling(dev); for_each_ring(ring, dev_priv, i) ring->init(ring); i915_gem_context_init(dev); i915_gem_init_ppgtt(dev); /* * It would make sense to re-init all the other hw state, at * least the rps/rc6/emon init done within modeset_init_hw. For * some unknown reason, this blows up my ilk, so don't. */ mutex_unlock(&dev->struct_mutex); drm_irq_uninstall(dev); drm_irq_install(dev); intel_hpd_init(dev); } else { mutex_unlock(&dev->struct_mutex); } return 0; } static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct intel_device_info *intel_info = (struct intel_device_info *) ent->driver_data; if (intel_info->is_valleyview) if(!i915_preliminary_hw_support) { DRM_ERROR("Preliminary hardware support disabled\n"); return -ENODEV; } /* Only bind to function 0 of the device. Early generations * used function 1 as a placeholder for multi-head. This causes * us confusion instead, especially on the systems where both * functions have the same PCI-ID! */ if (PCI_FUNC(pdev->devfn)) return -ENODEV; /* We've managed to ship a kms-enabled ddx that shipped with an XvMC * implementation for gen3 (and only gen3) that used legacy drm maps * (gasp!) to share buffers between X and the client. Hence we need to * keep around the fake agp stuff for gen3, even when kms is enabled. */ if (intel_info->gen != 3) { driver.driver_features &= ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP); } else if (!intel_agp_enabled) { DRM_ERROR("drm/i915 can't work without intel_agp module!\n"); return -ENODEV; } return drm_get_pci_dev(pdev, ent, &driver); } static void i915_pci_remove(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); drm_put_dev(dev); } static int i915_pm_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *drm_dev = pci_get_drvdata(pdev); int error; if (!drm_dev || !drm_dev->dev_private) { dev_err(dev, "DRM not initialized, aborting suspend.\n"); return -ENODEV; } if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; error = i915_drm_freeze(drm_dev); if (error) return error; pci_disable_device(pdev); pci_set_power_state(pdev, PCI_D3hot); return 0; } static int i915_pm_resume(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *drm_dev = pci_get_drvdata(pdev); return i915_resume(drm_dev); } static int i915_pm_freeze(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *drm_dev = pci_get_drvdata(pdev); if (!drm_dev || !drm_dev->dev_private) { dev_err(dev, "DRM not initialized, aborting suspend.\n"); return -ENODEV; } return i915_drm_freeze(drm_dev); } static int i915_pm_thaw(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *drm_dev = pci_get_drvdata(pdev); return i915_drm_thaw(drm_dev); } static int i915_pm_poweroff(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct drm_device *drm_dev = pci_get_drvdata(pdev); return i915_drm_freeze(drm_dev); } static const struct dev_pm_ops i915_pm_ops = { .suspend = i915_pm_suspend, .resume = i915_pm_resume, .freeze = i915_pm_freeze, .thaw = i915_pm_thaw, .poweroff = i915_pm_poweroff, .restore = i915_pm_resume, }; static const struct vm_operations_struct i915_gem_vm_ops = { .fault = i915_gem_fault, .open = drm_gem_vm_open, .close = drm_gem_vm_close, }; static const struct file_operations i915_driver_fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, .mmap = drm_gem_mmap, .poll = drm_poll, .fasync = drm_fasync, .read = drm_read, #ifdef CONFIG_COMPAT .compat_ioctl = i915_compat_ioctl, #endif .llseek = noop_llseek, }; static struct drm_driver driver = { /* Don't use MTRRs here; the Xserver or userspace app should * deal with them for Intel hardware. */ .driver_features = DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/ DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME, .load = i915_driver_load, .unload = i915_driver_unload, .open = i915_driver_open, .lastclose = i915_driver_lastclose, .preclose = i915_driver_preclose, .postclose = i915_driver_postclose, /* Used in place of i915_pm_ops for non-DRIVER_MODESET */ .suspend = i915_suspend, .resume = i915_resume, .device_is_agp = i915_driver_device_is_agp, .master_create = i915_master_create, .master_destroy = i915_master_destroy, #if defined(CONFIG_DEBUG_FS) .debugfs_init = i915_debugfs_init, .debugfs_cleanup = i915_debugfs_cleanup, #endif .gem_init_object = i915_gem_init_object, .gem_free_object = i915_gem_free_object, .gem_vm_ops = &i915_gem_vm_ops, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = i915_gem_prime_export, .gem_prime_import = i915_gem_prime_import, .dumb_create = i915_gem_dumb_create, .dumb_map_offset = i915_gem_mmap_gtt, .dumb_destroy = i915_gem_dumb_destroy, .ioctls = i915_ioctls, .fops = &i915_driver_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, }; static struct pci_driver i915_pci_driver = { .name = DRIVER_NAME, .id_table = pciidlist, .probe = i915_pci_probe, .remove = i915_pci_remove, .driver.pm = &i915_pm_ops, }; static int __init i915_init(void) { driver.num_ioctls = i915_max_ioctl; /* * If CONFIG_DRM_I915_KMS is set, default to KMS unless * explicitly disabled with the module pararmeter. * * Otherwise, just follow the parameter (defaulting to off). * * Allow optional vga_text_mode_force boot option to override * the default behavior. */ #if defined(CONFIG_DRM_I915_KMS) if (i915_modeset != 0) driver.driver_features |= DRIVER_MODESET; #endif if (i915_modeset == 1) driver.driver_features |= DRIVER_MODESET; #ifdef CONFIG_VGA_CONSOLE if (vgacon_text_force() && i915_modeset == -1) driver.driver_features &= ~DRIVER_MODESET; #endif if (!(driver.driver_features & DRIVER_MODESET)) driver.get_vblank_timestamp = NULL; return drm_pci_init(&driver, &i915_pci_driver); } static void __exit i915_exit(void) { drm_pci_exit(&driver, &i915_pci_driver); } module_init(i915_init); module_exit(i915_exit); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL and additional rights"); /* We give fast paths for the really cool registers */ #define NEEDS_FORCE_WAKE(dev_priv, reg) \ ((HAS_FORCE_WAKE((dev_priv)->dev)) && \ ((reg) < 0x40000) && \ ((reg) != FORCEWAKE)) static bool IS_DISPLAYREG(u32 reg) { /* * This should make it easier to transition modules over to the * new register block scheme, since we can do it incrementally. */ if (reg >= VLV_DISPLAY_BASE) return false; if (reg >= RENDER_RING_BASE && reg < RENDER_RING_BASE + 0xff) return false; if (reg >= GEN6_BSD_RING_BASE && reg < GEN6_BSD_RING_BASE + 0xff) return false; if (reg >= BLT_RING_BASE && reg < BLT_RING_BASE + 0xff) return false; if (reg == PGTBL_ER) return false; if (reg >= IPEIR_I965 && reg < HWSTAM) return false; if (reg == MI_MODE) return false; if (reg == GFX_MODE_GEN7) return false; if (reg == RENDER_HWS_PGA_GEN7 || reg == BSD_HWS_PGA_GEN7 || reg == BLT_HWS_PGA_GEN7) return false; if (reg == GEN6_BSD_SLEEP_PSMI_CONTROL || reg == GEN6_BSD_RNCID) return false; if (reg == GEN6_BLITTER_ECOSKPD) return false; if (reg >= 0x4000c && reg <= 0x4002c) return false; if (reg >= 0x4f000 && reg <= 0x4f08f) return false; if (reg >= 0x4f100 && reg <= 0x4f11f) return false; if (reg >= VLV_MASTER_IER && reg <= GEN6_PMIER) return false; if (reg >= FENCE_REG_SANDYBRIDGE_0 && reg < (FENCE_REG_SANDYBRIDGE_0 + (16*8))) return false; if (reg >= VLV_IIR_RW && reg <= VLV_ISR) return false; if (reg == FORCEWAKE_VLV || reg == FORCEWAKE_ACK_VLV) return false; if (reg == GEN6_GDRST) return false; switch (reg) { case _3D_CHICKEN3: case IVB_CHICKEN3: case GEN7_COMMON_SLICE_CHICKEN1: case GEN7_L3CNTLREG1: case GEN7_L3_CHICKEN_MODE_REGISTER: case GEN7_ROW_CHICKEN2: case GEN7_L3SQCREG4: case GEN7_SQ_CHICKEN_MBCUNIT_CONFIG: case GEN7_HALF_SLICE_CHICKEN1: case GEN6_MBCTL: case GEN6_UCGCTL2: return false; default: break; } return true; } static void ilk_dummy_write(struct drm_i915_private *dev_priv) { /* WaIssueDummyWriteToWakeupFromRC6: Issue a dummy write to wake up the * chip from rc6 before touching it for real. MI_MODE is masked, hence * harmless to write 0 into. */ I915_WRITE_NOTRACE(MI_MODE, 0); } #define __i915_read(x, y) \ u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \ u##x val = 0; \ if (IS_GEN5(dev_priv->dev)) \ ilk_dummy_write(dev_priv); \ if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ unsigned long irqflags; \ spin_lock_irqsave(&dev_priv->gt_lock, irqflags); \ if (dev_priv->forcewake_count == 0) \ dev_priv->gt.force_wake_get(dev_priv); \ val = read##y(dev_priv->regs + reg); \ if (dev_priv->forcewake_count == 0) \ dev_priv->gt.force_wake_put(dev_priv); \ spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \ } else if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ val = read##y(dev_priv->regs + reg + 0x180000); \ } else { \ val = read##y(dev_priv->regs + reg); \ } \ trace_i915_reg_rw(false, reg, val, sizeof(val)); \ return val; \ } __i915_read(8, b) __i915_read(16, w) __i915_read(32, l) __i915_read(64, q) #undef __i915_read #define __i915_write(x, y) \ void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \ u32 __fifo_ret = 0; \ trace_i915_reg_rw(true, reg, val, sizeof(val)); \ if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ } \ if (IS_GEN5(dev_priv->dev)) \ ilk_dummy_write(dev_priv); \ if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ DRM_ERROR("Unknown unclaimed register before writing to %x\n", reg); \ I915_WRITE_NOTRACE(GEN7_ERR_INT, ERR_INT_MMIO_UNCLAIMED); \ } \ if (IS_VALLEYVIEW(dev_priv->dev) && IS_DISPLAYREG(reg)) { \ write##y(val, dev_priv->regs + reg + 0x180000); \ } else { \ write##y(val, dev_priv->regs + reg); \ } \ if (unlikely(__fifo_ret)) { \ gen6_gt_check_fifodbg(dev_priv); \ } \ if (IS_HASWELL(dev_priv->dev) && (I915_READ_NOTRACE(GEN7_ERR_INT) & ERR_INT_MMIO_UNCLAIMED)) { \ DRM_ERROR("Unclaimed write to %x\n", reg); \ writel(ERR_INT_MMIO_UNCLAIMED, dev_priv->regs + GEN7_ERR_INT); \ } \ } __i915_write(8, b) __i915_write(16, w) __i915_write(32, l) __i915_write(64, q) #undef __i915_write static const struct register_whitelist { uint64_t offset; uint32_t size; uint32_t gen_bitmask; /* support gens, 0x10 for 4, 0x30 for 4 and 5, etc. */ } whitelist[] = { { RING_TIMESTAMP(RENDER_RING_BASE), 8, 0xF0 }, }; int i915_reg_read_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_i915_private *dev_priv = dev->dev_private; struct drm_i915_reg_read *reg = data; struct register_whitelist const *entry = whitelist; int i; for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) { if (entry->offset == reg->offset && (1 << INTEL_INFO(dev)->gen & entry->gen_bitmask)) break; } if (i == ARRAY_SIZE(whitelist)) return -EINVAL; switch (entry->size) { case 8: reg->val = I915_READ64(reg->offset); break; case 4: reg->val = I915_READ(reg->offset); break; case 2: reg->val = I915_READ16(reg->offset); break; case 1: reg->val = I915_READ8(reg->offset); break; default: WARN_ON(1); return -EINVAL; } return 0; }