| /* 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 "drmP.h" |
| #include "drm.h" |
| #include "i915_drm.h" |
| #include "i915_drv.h" |
| #include "intel_drv.h" |
| |
| #include <linux/console.h> |
| #include <linux/module.h> |
| #include "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 = 0; |
| module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600); |
| MODULE_PARM_DESC(panel_ignore_lid, |
| "Override lid status (0=autodetect [default], 1=lid open, " |
| "-1=lid closed)"); |
| |
| 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, 0600); |
| 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_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 selection of SDVO panel mode in the VBT " |
| "(default: auto)"); |
| |
| 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)"); |
| |
| bool i915_enable_ppgtt __read_mostly = 1; |
| module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, bool, 0600); |
| MODULE_PARM_DESC(i915_enable_ppgtt, |
| "Enable PPGTT (default: true)"); |
| |
| 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, |
| }; |
| |
| 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, |
| }; |
| |
| 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, |
| }; |
| |
| 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, |
| }; |
| |
| 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 */ |
| {0, 0, 0} |
| }; |
| |
| #if defined(CONFIG_DRM_I915_KMS) |
| MODULE_DEVICE_TABLE(pci, pciidlist); |
| #endif |
| |
| #define INTEL_PCH_DEVICE_ID_MASK 0xff00 |
| #define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00 |
| #define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00 |
| #define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00 |
| |
| 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) { |
| int id; |
| id = pch->device & INTEL_PCH_DEVICE_ID_MASK; |
| |
| if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) { |
| dev_priv->pch_type = PCH_IBX; |
| DRM_DEBUG_KMS("Found Ibex Peak PCH\n"); |
| } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) { |
| dev_priv->pch_type = PCH_CPT; |
| DRM_DEBUG_KMS("Found CougarPoint PCH\n"); |
| } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) { |
| /* PantherPoint is CPT compatible */ |
| dev_priv->pch_type = PCH_CPT; |
| DRM_DEBUG_KMS("Found PatherPoint PCH\n"); |
| } |
| } |
| pci_dev_put(pch); |
| } |
| } |
| |
| void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv) |
| { |
| int count; |
| |
| count = 0; |
| while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1)) |
| udelay(10); |
| |
| I915_WRITE_NOTRACE(FORCEWAKE, 1); |
| POSTING_READ(FORCEWAKE); |
| |
| count = 0; |
| while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1) == 0) |
| udelay(10); |
| } |
| |
| void __gen6_gt_force_wake_mt_get(struct drm_i915_private *dev_priv) |
| { |
| int count; |
| |
| count = 0; |
| while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_MT_ACK) & 1)) |
| udelay(10); |
| |
| I915_WRITE_NOTRACE(FORCEWAKE_MT, (1<<16) | 1); |
| POSTING_READ(FORCEWAKE_MT); |
| |
| count = 0; |
| while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_MT_ACK) & 1) == 0) |
| udelay(10); |
| } |
| |
| /* |
| * Generally this is called implicitly by the register read function. However, |
| * if some sequence requires the GT to not power down then this function should |
| * be called at the beginning of the sequence followed by a call to |
| * gen6_gt_force_wake_put() at the end of the sequence. |
| */ |
| void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv) |
| { |
| unsigned long irqflags; |
| |
| spin_lock_irqsave(&dev_priv->gt_lock, irqflags); |
| if (dev_priv->forcewake_count++ == 0) |
| dev_priv->display.force_wake_get(dev_priv); |
| spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); |
| } |
| |
| static void gen6_gt_check_fifodbg(struct drm_i915_private *dev_priv) |
| { |
| u32 gtfifodbg; |
| gtfifodbg = I915_READ_NOTRACE(GTFIFODBG); |
| if (WARN(gtfifodbg & GT_FIFO_CPU_ERROR_MASK, |
| "MMIO read or write has been dropped %x\n", gtfifodbg)) |
| I915_WRITE_NOTRACE(GTFIFODBG, GT_FIFO_CPU_ERROR_MASK); |
| } |
| |
| void __gen6_gt_force_wake_put(struct drm_i915_private *dev_priv) |
| { |
| I915_WRITE_NOTRACE(FORCEWAKE, 0); |
| /* The below doubles as a POSTING_READ */ |
| gen6_gt_check_fifodbg(dev_priv); |
| } |
| |
| void __gen6_gt_force_wake_mt_put(struct drm_i915_private *dev_priv) |
| { |
| I915_WRITE_NOTRACE(FORCEWAKE_MT, (1<<16) | 0); |
| /* The below doubles as a POSTING_READ */ |
| gen6_gt_check_fifodbg(dev_priv); |
| } |
| |
| /* |
| * see gen6_gt_force_wake_get() |
| */ |
| void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv) |
| { |
| unsigned long irqflags; |
| |
| spin_lock_irqsave(&dev_priv->gt_lock, irqflags); |
| if (--dev_priv->forcewake_count == 0) |
| dev_priv->display.force_wake_put(dev_priv); |
| spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); |
| } |
| |
| int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) |
| { |
| int ret = 0; |
| |
| if (dev_priv->gt_fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) { |
| int loop = 500; |
| u32 fifo = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); |
| while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) { |
| udelay(10); |
| fifo = I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES); |
| } |
| if (WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES)) |
| ++ret; |
| dev_priv->gt_fifo_count = fifo; |
| } |
| dev_priv->gt_fifo_count--; |
| |
| return ret; |
| } |
| |
| 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; |
| } |
| 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; |
| } |
| |
| static int i915_drm_thaw(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int error = 0; |
| |
| 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_restore_state(dev); |
| intel_opregion_setup(dev); |
| |
| /* KMS EnterVT equivalent */ |
| if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
| mutex_lock(&dev->struct_mutex); |
| dev_priv->mm.suspended = 0; |
| |
| error = i915_gem_init_hw(dev); |
| mutex_unlock(&dev->struct_mutex); |
| |
| if (HAS_PCH_SPLIT(dev)) |
| ironlake_init_pch_refclk(dev); |
| |
| drm_mode_config_reset(dev); |
| drm_irq_install(dev); |
| |
| /* Resume the modeset for every activated CRTC */ |
| drm_helper_resume_force_mode(dev); |
| |
| if (IS_IRONLAKE_M(dev)) |
| ironlake_enable_rc6(dev); |
| } |
| |
| intel_opregion_init(dev); |
| |
| dev_priv->modeset_on_lid = 0; |
| |
| console_lock(); |
| intel_fbdev_set_suspend(dev, 0); |
| console_unlock(); |
| return error; |
| } |
| |
| int i915_resume(struct drm_device *dev) |
| { |
| 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); |
| |
| 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, u8 flags) |
| { |
| 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 & 0x1; |
| } |
| |
| static int i965_do_reset(struct drm_device *dev, u8 flags) |
| { |
| 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 | flags | 0x1); |
| |
| return wait_for(i965_reset_complete(dev), 500); |
| } |
| |
| static int ironlake_do_reset(struct drm_device *dev, u8 flags) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| u32 gdrst = I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR); |
| I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, gdrst | flags | 0x1); |
| return wait_for(I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & 0x1, 500); |
| } |
| |
| static int gen6_do_reset(struct drm_device *dev, u8 flags) |
| { |
| 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->display.force_wake_get(dev_priv); |
| else |
| dev_priv->display.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; |
| } |
| |
| /** |
| * i915_reset - reset chip after a hang |
| * @dev: drm device to reset |
| * @flags: reset domains |
| * |
| * 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, u8 flags) |
| { |
| drm_i915_private_t *dev_priv = dev->dev_private; |
| /* |
| * We really should only reset the display subsystem if we actually |
| * need to |
| */ |
| bool need_display = true; |
| int ret; |
| |
| if (!i915_try_reset) |
| return 0; |
| |
| if (!mutex_trylock(&dev->struct_mutex)) |
| return -EBUSY; |
| |
| 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 switch (INTEL_INFO(dev)->gen) { |
| case 7: |
| case 6: |
| ret = gen6_do_reset(dev, flags); |
| break; |
| case 5: |
| ret = ironlake_do_reset(dev, flags); |
| break; |
| case 4: |
| ret = i965_do_reset(dev, flags); |
| break; |
| case 2: |
| ret = i8xx_do_reset(dev, flags); |
| break; |
| } |
| 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) { |
| dev_priv->mm.suspended = 0; |
| |
| i915_gem_init_swizzling(dev); |
| |
| dev_priv->ring[RCS].init(&dev_priv->ring[RCS]); |
| if (HAS_BSD(dev)) |
| dev_priv->ring[VCS].init(&dev_priv->ring[VCS]); |
| if (HAS_BLT(dev)) |
| dev_priv->ring[BCS].init(&dev_priv->ring[BCS]); |
| |
| i915_gem_init_ppgtt(dev); |
| |
| mutex_unlock(&dev->struct_mutex); |
| drm_irq_uninstall(dev); |
| drm_mode_config_reset(dev); |
| drm_irq_install(dev); |
| mutex_lock(&dev->struct_mutex); |
| } |
| |
| mutex_unlock(&dev->struct_mutex); |
| |
| /* |
| * Perform a full modeset as on later generations, e.g. Ironlake, we may |
| * need to retrain the display link and cannot just restore the register |
| * values. |
| */ |
| if (need_display) { |
| mutex_lock(&dev->mode_config.mutex); |
| drm_helper_resume_force_mode(dev); |
| mutex_unlock(&dev->mode_config.mutex); |
| } |
| |
| return 0; |
| } |
| |
| |
| static int __devinit |
| i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| { |
| /* 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; |
| |
| 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 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, |
| .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, |
| .reclaim_buffers = drm_core_reclaim_buffers, |
| .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, |
| .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) |
| { |
| if (!intel_agp_enabled) { |
| DRM_ERROR("drm/i915 can't work without intel_agp module!\n"); |
| return -ENODEV; |
| } |
| |
| 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"); |
| |
| #define __i915_read(x, y) \ |
| u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \ |
| u##x val = 0; \ |
| 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->display.force_wake_get(dev_priv); \ |
| val = read##y(dev_priv->regs + reg); \ |
| if (dev_priv->forcewake_count == 0) \ |
| dev_priv->display.force_wake_put(dev_priv); \ |
| spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \ |
| } 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); \ |
| } \ |
| write##y(val, dev_priv->regs + reg); \ |
| if (unlikely(__fifo_ret)) { \ |
| gen6_gt_check_fifodbg(dev_priv); \ |
| } \ |
| } |
| __i915_write(8, b) |
| __i915_write(16, w) |
| __i915_write(32, l) |
| __i915_write(64, q) |
| #undef __i915_write |