| /* 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 <linux/device.h> |
| #include <drm/drmP.h> |
| #include <drm/i915_drm.h> |
| #include "i915_drv.h" |
| #include "i915_trace.h" |
| #include "intel_drv.h" |
| |
| #include <linux/console.h> |
| #include <linux/module.h> |
| #include <drm/drm_crtc_helper.h> |
| |
| 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)"); |
| |
| int i915_enable_psr __read_mostly = 0; |
| module_param_named(enable_psr, i915_enable_psr, int, 0600); |
| MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)"); |
| |
| unsigned int i915_preliminary_hw_support __read_mostly = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT); |
| module_param_named(preliminary_hw_support, i915_preliminary_hw_support, int, 0600); |
| MODULE_PARM_DESC(preliminary_hw_support, |
| "Enable preliminary hardware support."); |
| |
| int i915_disable_power_well __read_mostly = 1; |
| module_param_named(disable_power_well, i915_disable_power_well, int, 0600); |
| MODULE_PARM_DESC(disable_power_well, |
| "Disable the power well when possible (default: true)"); |
| |
| int i915_enable_ips __read_mostly = 1; |
| module_param_named(enable_ips, i915_enable_ips, int, 0600); |
| MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)"); |
| |
| bool i915_fastboot __read_mostly = 0; |
| module_param_named(fastboot, i915_fastboot, bool, 0600); |
| MODULE_PARM_DESC(fastboot, "Try to skip unnecessary mode sets at boot time " |
| "(default: false)"); |
| |
| int i915_enable_pc8 __read_mostly = 1; |
| module_param_named(enable_pc8, i915_enable_pc8, int, 0600); |
| MODULE_PARM_DESC(enable_pc8, "Enable support for low power package C states (PC8+) (default: true)"); |
| |
| int i915_pc8_timeout __read_mostly = 5000; |
| module_param_named(pc8_timeout, i915_pc8_timeout, int, 0600); |
| MODULE_PARM_DESC(pc8_timeout, "Number of msecs of idleness required to enter PC8+ (default: 5000)"); |
| |
| bool i915_prefault_disable __read_mostly; |
| module_param_named(prefault_disable, i915_prefault_disable, bool, 0600); |
| MODULE_PARM_DESC(prefault_disable, |
| "Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only."); |
| |
| static struct drm_driver driver; |
| |
| static const struct intel_device_info intel_i830_info = { |
| .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_845g_info = { |
| .gen = 2, .num_pipes = 1, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_i85x_info = { |
| .gen = 2, .is_i85x = 1, .is_mobile = 1, .num_pipes = 2, |
| .cursor_needs_physical = 1, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_i865g_info = { |
| .gen = 2, .num_pipes = 1, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_i915g_info = { |
| .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .num_pipes = 2, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| static const struct intel_device_info intel_i915gm_info = { |
| .gen = 3, .is_mobile = 1, .num_pipes = 2, |
| .cursor_needs_physical = 1, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .supports_tv = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| static const struct intel_device_info intel_i945g_info = { |
| .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .num_pipes = 2, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| static const struct intel_device_info intel_i945gm_info = { |
| .gen = 3, .is_i945gm = 1, .is_mobile = 1, .num_pipes = 2, |
| .has_hotplug = 1, .cursor_needs_physical = 1, |
| .has_overlay = 1, .overlay_needs_physical = 1, |
| .supports_tv = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_i965g_info = { |
| .gen = 4, .is_broadwater = 1, .num_pipes = 2, |
| .has_hotplug = 1, |
| .has_overlay = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_i965gm_info = { |
| .gen = 4, .is_crestline = 1, .num_pipes = 2, |
| .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1, |
| .has_overlay = 1, |
| .supports_tv = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_g33_info = { |
| .gen = 3, .is_g33 = 1, .num_pipes = 2, |
| .need_gfx_hws = 1, .has_hotplug = 1, |
| .has_overlay = 1, |
| .ring_mask = RENDER_RING, |
| }; |
| |
| static const struct intel_device_info intel_g45_info = { |
| .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .num_pipes = 2, |
| .has_pipe_cxsr = 1, .has_hotplug = 1, |
| .ring_mask = RENDER_RING | BSD_RING, |
| }; |
| |
| static const struct intel_device_info intel_gm45_info = { |
| .gen = 4, .is_g4x = 1, .num_pipes = 2, |
| .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, |
| .has_pipe_cxsr = 1, .has_hotplug = 1, |
| .supports_tv = 1, |
| .ring_mask = RENDER_RING | BSD_RING, |
| }; |
| |
| static const struct intel_device_info intel_pineview_info = { |
| .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .num_pipes = 2, |
| .need_gfx_hws = 1, .has_hotplug = 1, |
| .has_overlay = 1, |
| }; |
| |
| static const struct intel_device_info intel_ironlake_d_info = { |
| .gen = 5, .num_pipes = 2, |
| .need_gfx_hws = 1, .has_hotplug = 1, |
| .ring_mask = RENDER_RING | BSD_RING, |
| }; |
| |
| static const struct intel_device_info intel_ironlake_m_info = { |
| .gen = 5, .is_mobile = 1, .num_pipes = 2, |
| .need_gfx_hws = 1, .has_hotplug = 1, |
| .has_fbc = 1, |
| .ring_mask = RENDER_RING | BSD_RING, |
| }; |
| |
| static const struct intel_device_info intel_sandybridge_d_info = { |
| .gen = 6, .num_pipes = 2, |
| .need_gfx_hws = 1, .has_hotplug = 1, |
| .ring_mask = RENDER_RING | BSD_RING | BLT_RING, |
| .has_llc = 1, |
| }; |
| |
| static const struct intel_device_info intel_sandybridge_m_info = { |
| .gen = 6, .is_mobile = 1, .num_pipes = 2, |
| .need_gfx_hws = 1, .has_hotplug = 1, |
| .has_fbc = 1, |
| .ring_mask = RENDER_RING | BSD_RING | BLT_RING, |
| .has_llc = 1, |
| }; |
| |
| #define GEN7_FEATURES \ |
| .gen = 7, .num_pipes = 3, \ |
| .need_gfx_hws = 1, .has_hotplug = 1, \ |
| .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \ |
| .has_llc = 1 |
| |
| static const struct intel_device_info intel_ivybridge_d_info = { |
| GEN7_FEATURES, |
| .is_ivybridge = 1, |
| }; |
| |
| static const struct intel_device_info intel_ivybridge_m_info = { |
| GEN7_FEATURES, |
| .is_ivybridge = 1, |
| .is_mobile = 1, |
| .has_fbc = 1, |
| }; |
| |
| static const struct intel_device_info intel_ivybridge_q_info = { |
| GEN7_FEATURES, |
| .is_ivybridge = 1, |
| .num_pipes = 0, /* legal, last one wins */ |
| }; |
| |
| static const struct intel_device_info intel_valleyview_m_info = { |
| GEN7_FEATURES, |
| .is_mobile = 1, |
| .num_pipes = 2, |
| .is_valleyview = 1, |
| .display_mmio_offset = VLV_DISPLAY_BASE, |
| .has_llc = 0, /* legal, last one wins */ |
| }; |
| |
| static const struct intel_device_info intel_valleyview_d_info = { |
| GEN7_FEATURES, |
| .num_pipes = 2, |
| .is_valleyview = 1, |
| .display_mmio_offset = VLV_DISPLAY_BASE, |
| .has_llc = 0, /* legal, last one wins */ |
| }; |
| |
| static const struct intel_device_info intel_haswell_d_info = { |
| GEN7_FEATURES, |
| .is_haswell = 1, |
| .has_ddi = 1, |
| .has_fpga_dbg = 1, |
| .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, |
| }; |
| |
| static const struct intel_device_info intel_haswell_m_info = { |
| GEN7_FEATURES, |
| .is_haswell = 1, |
| .is_mobile = 1, |
| .has_ddi = 1, |
| .has_fpga_dbg = 1, |
| .has_fbc = 1, |
| .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, |
| }; |
| |
| /* |
| * Make sure any device matches here are from most specific to most |
| * general. For example, since the Quanta match is based on the subsystem |
| * and subvendor IDs, we need it to come before the more general IVB |
| * PCI ID matches, otherwise we'll use the wrong info struct above. |
| */ |
| #define INTEL_PCI_IDS \ |
| INTEL_I830_IDS(&intel_i830_info), \ |
| INTEL_I845G_IDS(&intel_845g_info), \ |
| INTEL_I85X_IDS(&intel_i85x_info), \ |
| INTEL_I865G_IDS(&intel_i865g_info), \ |
| INTEL_I915G_IDS(&intel_i915g_info), \ |
| INTEL_I915GM_IDS(&intel_i915gm_info), \ |
| INTEL_I945G_IDS(&intel_i945g_info), \ |
| INTEL_I945GM_IDS(&intel_i945gm_info), \ |
| INTEL_I965G_IDS(&intel_i965g_info), \ |
| INTEL_G33_IDS(&intel_g33_info), \ |
| INTEL_I965GM_IDS(&intel_i965gm_info), \ |
| INTEL_GM45_IDS(&intel_gm45_info), \ |
| INTEL_G45_IDS(&intel_g45_info), \ |
| INTEL_PINEVIEW_IDS(&intel_pineview_info), \ |
| INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \ |
| INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \ |
| INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \ |
| INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \ |
| INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \ |
| INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \ |
| INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \ |
| INTEL_HSW_D_IDS(&intel_haswell_d_info), \ |
| INTEL_HSW_M_IDS(&intel_haswell_m_info), \ |
| INTEL_VLV_M_IDS(&intel_valleyview_m_info), \ |
| INTEL_VLV_D_IDS(&intel_valleyview_d_info) |
| |
| static const struct pci_device_id pciidlist[] = { /* aka */ |
| INTEL_PCI_IDS, |
| {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; |
| |
| /* In all current cases, num_pipes is equivalent to the PCH_NOP setting |
| * (which really amounts to a PCH but no South Display). |
| */ |
| if (INTEL_INFO(dev)->num_pipes == 0) { |
| dev_priv->pch_type = PCH_NOP; |
| return; |
| } |
| |
| /* |
| * 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. |
| * |
| * In some virtualized environments (e.g. XEN), there is irrelevant |
| * ISA bridge in the system. To work reliably, we should scan trhough |
| * all the ISA bridge devices and check for the first match, instead |
| * of only checking the first one. |
| */ |
| pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); |
| while (pch) { |
| struct pci_dev *curr = 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; |
| 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; |
| 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; |
| DRM_DEBUG_KMS("Found PantherPoint 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; |
| DRM_DEBUG_KMS("Found LynxPoint PCH\n"); |
| WARN_ON(!IS_HASWELL(dev)); |
| WARN_ON(IS_ULT(dev)); |
| } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) { |
| dev_priv->pch_type = PCH_LPT; |
| DRM_DEBUG_KMS("Found LynxPoint LP PCH\n"); |
| WARN_ON(!IS_HASWELL(dev)); |
| WARN_ON(!IS_ULT(dev)); |
| } else { |
| goto check_next; |
| } |
| pci_dev_put(pch); |
| break; |
| } |
| check_next: |
| pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, curr); |
| pci_dev_put(curr); |
| } |
| if (!pch) |
| DRM_DEBUG_KMS("No PCH found?\n"); |
| } |
| |
| 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; |
| struct drm_crtc *crtc; |
| |
| /* ignore lid events during suspend */ |
| mutex_lock(&dev_priv->modeset_restore_lock); |
| dev_priv->modeset_restore = MODESET_SUSPENDED; |
| mutex_unlock(&dev_priv->modeset_restore_lock); |
| |
| /* We do a lot of poking in a lot of registers, make sure they work |
| * properly. */ |
| hsw_disable_package_c8(dev_priv); |
| intel_display_set_init_power(dev, true); |
| |
| 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; |
| |
| error = i915_gem_suspend(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); |
| |
| drm_irq_uninstall(dev); |
| dev_priv->enable_hotplug_processing = false; |
| /* |
| * Disable CRTCs directly since we want to preserve sw state |
| * for _thaw. |
| */ |
| list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) |
| dev_priv->display.crtc_disable(crtc); |
| |
| intel_modeset_suspend_hw(dev); |
| } |
| |
| i915_gem_suspend_gtt_mappings(dev); |
| |
| i915_save_state(dev); |
| |
| intel_opregion_fini(dev); |
| |
| console_lock(); |
| intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED); |
| 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, FBINFO_STATE_RUNNING); |
| console_unlock(); |
| } |
| |
| static void intel_resume_hotplug(struct drm_device *dev) |
| { |
| struct drm_mode_config *mode_config = &dev->mode_config; |
| struct intel_encoder *encoder; |
| |
| mutex_lock(&mode_config->mutex); |
| DRM_DEBUG_KMS("running encoder hotplug functions\n"); |
| |
| list_for_each_entry(encoder, &mode_config->encoder_list, base.head) |
| if (encoder->hot_plug) |
| encoder->hot_plug(encoder); |
| |
| mutex_unlock(&mode_config->mutex); |
| |
| /* Just fire off a uevent and let userspace tell us what to do */ |
| drm_helper_hpd_irq_event(dev); |
| } |
| |
| static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int error = 0; |
| |
| intel_uncore_early_sanitize(dev); |
| |
| intel_uncore_sanitize(dev); |
| |
| if (drm_core_check_feature(dev, DRIVER_MODESET) && |
| restore_gtt_mappings) { |
| mutex_lock(&dev->struct_mutex); |
| i915_gem_restore_gtt_mappings(dev); |
| mutex_unlock(&dev->struct_mutex); |
| } |
| |
| intel_power_domains_init_hw(dev); |
| |
| 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); |
| |
| error = i915_gem_init_hw(dev); |
| mutex_unlock(&dev->struct_mutex); |
| |
| /* We need working interrupts for modeset enabling ... */ |
| drm_irq_install(dev); |
| |
| intel_modeset_init_hw(dev); |
| |
| drm_modeset_lock_all(dev); |
| intel_modeset_setup_hw_state(dev, true); |
| drm_modeset_unlock_all(dev); |
| |
| /* |
| * ... but also need to make sure that hotplug processing |
| * doesn't cause havoc. Like in the driver load code we don't |
| * bother with the tiny race here where we might loose hotplug |
| * notifications. |
| * */ |
| intel_hpd_init(dev); |
| dev_priv->enable_hotplug_processing = true; |
| /* Config may have changed between suspend and resume */ |
| intel_resume_hotplug(dev); |
| } |
| |
| intel_opregion_init(dev); |
| |
| /* |
| * 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, FBINFO_STATE_RUNNING); |
| console_unlock(); |
| } else { |
| schedule_work(&dev_priv->console_resume_work); |
| } |
| |
| /* Undo what we did at i915_drm_freeze so the refcount goes back to the |
| * expected level. */ |
| hsw_enable_package_c8(dev_priv); |
| |
| mutex_lock(&dev_priv->modeset_restore_lock); |
| dev_priv->modeset_restore = MODESET_DONE; |
| mutex_unlock(&dev_priv->modeset_restore_lock); |
| return error; |
| } |
| |
| static int i915_drm_thaw(struct drm_device *dev) |
| { |
| if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| i915_check_and_clear_faults(dev); |
| |
| return __i915_drm_thaw(dev, true); |
| } |
| |
| 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); |
| |
| /* |
| * Platforms with opregion should have sane BIOS, older ones (gen3 and |
| * earlier) need to restore the GTT mappings since the BIOS might clear |
| * all our scratch PTEs. |
| */ |
| ret = __i915_drm_thaw(dev, !dev_priv->opregion.header); |
| if (ret) |
| return ret; |
| |
| drm_kms_helper_poll_enable(dev); |
| return 0; |
| } |
| |
| /** |
| * 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; |
| bool simulated; |
| int ret; |
| |
| if (!i915_try_reset) |
| return 0; |
| |
| mutex_lock(&dev->struct_mutex); |
| |
| i915_gem_reset(dev); |
| |
| simulated = dev_priv->gpu_error.stop_rings != 0; |
| |
| ret = intel_gpu_reset(dev); |
| |
| /* Also reset the gpu hangman. */ |
| if (simulated) { |
| DRM_INFO("Simulated gpu hang, resetting stop_rings\n"); |
| dev_priv->gpu_error.stop_rings = 0; |
| if (ret == -ENODEV) { |
| DRM_INFO("Reset not implemented, but ignoring " |
| "error for simulated gpu hangs\n"); |
| ret = 0; |
| } |
| } |
| |
| if (ret) { |
| DRM_ERROR("Failed to reset chip: %i\n", ret); |
| 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->ums.mm_suspended) { |
| dev_priv->ums.mm_suspended = 0; |
| |
| ret = i915_gem_init_hw(dev); |
| mutex_unlock(&dev->struct_mutex); |
| if (ret) { |
| DRM_ERROR("Failed hw init on reset %d\n", ret); |
| return ret; |
| } |
| |
| 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 (IS_PRELIMINARY_HW(intel_info) && !i915_preliminary_hw_support) { |
| DRM_INFO("This hardware requires preliminary hardware support.\n" |
| "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\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; |
| |
| driver.driver_features &= ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP); |
| |
| 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, |
| .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_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME | |
| DRIVER_RENDER, |
| .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_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 = drm_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; |
| #ifndef CONFIG_DRM_I915_UMS |
| /* Silently fail loading to not upset userspace. */ |
| return 0; |
| #endif |
| } |
| |
| 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"); |