| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Chris Wilson | 7730 | 63.63% | 102 | 28.02% |
| Kumar, Mahesh | 1382 | 11.38% | 6 | 1.65% |
| Imre Deak | 585 | 4.82% | 44 | 12.09% |
| Jani Nikula | 497 | 4.09% | 9 | 2.47% |
| David Weinehall | 214 | 1.76% | 3 | 0.82% |
| Michel Thierry | 187 | 1.54% | 4 | 1.10% |
| Michal Wajdeczko | 145 | 1.19% | 8 | 2.20% |
| Ville Syrjälä | 127 | 1.05% | 14 | 3.85% |
| Tvrtko A. Ursulin | 123 | 1.01% | 20 | 5.49% |
| Dave Airlie | 122 | 1.00% | 15 | 4.12% |
| Paulo Zanoni | 101 | 0.83% | 11 | 3.02% |
| Daniel Vetter | 84 | 0.69% | 11 | 3.02% |
| Robert Bragg | 68 | 0.56% | 4 | 1.10% |
| Lionel Landwerlin | 64 | 0.53% | 6 | 1.65% |
| Jesse Barnes | 60 | 0.49% | 9 | 2.47% |
| Rodrigo Vivi | 49 | 0.40% | 7 | 1.92% |
| Sagar Arun Kamble | 49 | 0.40% | 8 | 2.20% |
| Zhenyu Wang | 44 | 0.36% | 3 | 0.82% |
| Anusha Srivatsa | 33 | 0.27% | 4 | 1.10% |
| Joonas Lahtinen | 31 | 0.26% | 3 | 0.82% |
| Robert Beckett | 29 | 0.24% | 1 | 0.27% |
| Maarten Lankhorst | 28 | 0.23% | 4 | 1.10% |
| Rafael J. Wysocki | 26 | 0.21% | 3 | 0.82% |
| Stephen Chandler Paul | 23 | 0.19% | 2 | 0.55% |
| Satheeshakrishna M | 22 | 0.18% | 1 | 0.27% |
| Eric Anholt | 21 | 0.17% | 2 | 0.55% |
| Arun Siluvery | 21 | 0.17% | 1 | 0.27% |
| Mika Kuoppala | 17 | 0.14% | 2 | 0.55% |
| Ben Gamari | 17 | 0.14% | 1 | 0.27% |
| Rui Zhang | 17 | 0.14% | 1 | 0.27% |
| Hans de Goede | 17 | 0.14% | 4 | 1.10% |
| Sinan Kaya | 17 | 0.14% | 1 | 0.27% |
| Kristian Högsberg | 16 | 0.13% | 2 | 0.55% |
| Wei Shun Chang | 14 | 0.12% | 1 | 0.27% |
| Oscar Mateo | 13 | 0.11% | 2 | 0.55% |
| Arjan van de Ven | 12 | 0.10% | 1 | 0.27% |
| Akash Goel | 12 | 0.10% | 2 | 0.55% |
| Damien Lespiau | 12 | 0.10% | 2 | 0.55% |
| Ben Widawsky | 11 | 0.09% | 4 | 1.10% |
| Kenneth Graunke | 9 | 0.07% | 3 | 0.82% |
| Rui Guo | 9 | 0.07% | 1 | 0.27% |
| Dhinakaran Pandiyan | 9 | 0.07% | 2 | 0.55% |
| Suketu Shah | 6 | 0.05% | 2 | 0.55% |
| Deepak S | 6 | 0.05% | 1 | 0.27% |
| Eugeni Dodonov | 6 | 0.05% | 1 | 0.27% |
| Keith Packard | 6 | 0.05% | 1 | 0.27% |
| Gerd Hoffmann | 6 | 0.05% | 1 | 0.27% |
| Jason Ekstrand | 5 | 0.04% | 1 | 0.27% |
| Chuanxiao Dong | 5 | 0.04% | 1 | 0.27% |
| Alex Dai | 5 | 0.04% | 1 | 0.27% |
| Lukas Wunner | 5 | 0.04% | 2 | 0.55% |
| Matthew Auld | 4 | 0.03% | 2 | 0.55% |
| Wayne Boyer | 4 | 0.03% | 1 | 0.27% |
| Arkadiusz Hiler | 4 | 0.03% | 1 | 0.27% |
| Yakui Zhao | 2 | 0.02% | 1 | 0.27% |
| Lucas De Marchi | 2 | 0.02% | 2 | 0.55% |
| Peter Antoine | 2 | 0.02% | 1 | 0.27% |
| Jeff McGee | 2 | 0.02% | 1 | 0.27% |
| Ander Conselvan de Oliveira | 2 | 0.02% | 2 | 0.55% |
| Paul Gortmaker | 2 | 0.02% | 1 | 0.27% |
| Jerome Anand | 2 | 0.02% | 1 | 0.27% |
| Sean Paul | 1 | 0.01% | 1 | 0.27% |
| David Herrmann | 1 | 0.01% | 1 | 0.27% |
| Michał Winiarski | 1 | 0.01% | 1 | 0.27% |
| Gwan-gyeong Mun | 1 | 0.01% | 1 | 0.27% |
| David Howells | 1 | 0.01% | 1 | 0.27% |
| Michael Witten | 1 | 0.01% | 1 | 0.27% |
| Total | 12149 | 364 |
/* 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/acpi.h> #include <linux/device.h> #include <linux/oom.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/pm.h> #include <linux/pm_runtime.h> #include <linux/pnp.h> #include <linux/slab.h> #include <linux/vgaarb.h> #include <linux/vga_switcheroo.h> #include <linux/vt.h> #include <acpi/video.h> #include <drm/drmP.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_atomic_helper.h> #include <drm/i915_drm.h> #include "i915_drv.h" #include "i915_trace.h" #include "i915_pmu.h" #include "i915_query.h" #include "i915_vgpu.h" #include "intel_drv.h" #include "intel_uc.h" static struct drm_driver driver; #if IS_ENABLED(CONFIG_DRM_I915_DEBUG) static unsigned int i915_load_fail_count; bool __i915_inject_load_failure(const char *func, int line) { if (i915_load_fail_count >= i915_modparams.inject_load_failure) return false; if (++i915_load_fail_count == i915_modparams.inject_load_failure) { DRM_INFO("Injecting failure at checkpoint %u [%s:%d]\n", i915_modparams.inject_load_failure, func, line); i915_modparams.inject_load_failure = 0; return true; } return false; } bool i915_error_injected(void) { return i915_load_fail_count && !i915_modparams.inject_load_failure; } #endif #define FDO_BUG_URL "https://bugs.freedesktop.org/enter_bug.cgi?product=DRI" #define FDO_BUG_MSG "Please file a bug at " FDO_BUG_URL " against DRM/Intel " \ "providing the dmesg log by booting with drm.debug=0xf" void __i915_printk(struct drm_i915_private *dev_priv, const char *level, const char *fmt, ...) { static bool shown_bug_once; struct device *kdev = dev_priv->drm.dev; bool is_error = level[1] <= KERN_ERR[1]; bool is_debug = level[1] == KERN_DEBUG[1]; struct va_format vaf; va_list args; if (is_debug && !(drm_debug & DRM_UT_DRIVER)) return; va_start(args, fmt); vaf.fmt = fmt; vaf.va = &args; if (is_error) dev_printk(level, kdev, "%pV", &vaf); else dev_printk(level, kdev, "[" DRM_NAME ":%ps] %pV", __builtin_return_address(0), &vaf); va_end(args); if (is_error && !shown_bug_once) { /* * Ask the user to file a bug report for the error, except * if they may have caused the bug by fiddling with unsafe * module parameters. */ if (!test_taint(TAINT_USER)) dev_notice(kdev, "%s", FDO_BUG_MSG); shown_bug_once = true; } } /* Map PCH device id to PCH type, or PCH_NONE if unknown. */ static enum intel_pch intel_pch_type(const struct drm_i915_private *dev_priv, unsigned short id) { switch (id) { case INTEL_PCH_IBX_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found Ibex Peak PCH\n"); WARN_ON(!IS_GEN5(dev_priv)); return PCH_IBX; case INTEL_PCH_CPT_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found CougarPoint PCH\n"); WARN_ON(!IS_GEN6(dev_priv) && !IS_IVYBRIDGE(dev_priv)); return PCH_CPT; case INTEL_PCH_PPT_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found PantherPoint PCH\n"); WARN_ON(!IS_GEN6(dev_priv) && !IS_IVYBRIDGE(dev_priv)); /* PantherPoint is CPT compatible */ return PCH_CPT; case INTEL_PCH_LPT_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found LynxPoint PCH\n"); WARN_ON(!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)); WARN_ON(IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv)); return PCH_LPT; case INTEL_PCH_LPT_LP_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found LynxPoint LP PCH\n"); WARN_ON(!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)); WARN_ON(!IS_HSW_ULT(dev_priv) && !IS_BDW_ULT(dev_priv)); return PCH_LPT; case INTEL_PCH_WPT_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found WildcatPoint PCH\n"); WARN_ON(!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)); WARN_ON(IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv)); /* WildcatPoint is LPT compatible */ return PCH_LPT; case INTEL_PCH_WPT_LP_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found WildcatPoint LP PCH\n"); WARN_ON(!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)); WARN_ON(!IS_HSW_ULT(dev_priv) && !IS_BDW_ULT(dev_priv)); /* WildcatPoint is LPT compatible */ return PCH_LPT; case INTEL_PCH_SPT_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found SunrisePoint PCH\n"); WARN_ON(!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv)); return PCH_SPT; case INTEL_PCH_SPT_LP_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n"); WARN_ON(!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv)); return PCH_SPT; case INTEL_PCH_KBP_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found Kaby Lake PCH (KBP)\n"); WARN_ON(!IS_SKYLAKE(dev_priv) && !IS_KABYLAKE(dev_priv) && !IS_COFFEELAKE(dev_priv)); return PCH_KBP; case INTEL_PCH_CNP_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found Cannon Lake PCH (CNP)\n"); WARN_ON(!IS_CANNONLAKE(dev_priv) && !IS_COFFEELAKE(dev_priv)); return PCH_CNP; case INTEL_PCH_CNP_LP_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found Cannon Lake LP PCH (CNP-LP)\n"); WARN_ON(!IS_CANNONLAKE(dev_priv) && !IS_COFFEELAKE(dev_priv)); return PCH_CNP; case INTEL_PCH_ICP_DEVICE_ID_TYPE: DRM_DEBUG_KMS("Found Ice Lake PCH\n"); WARN_ON(!IS_ICELAKE(dev_priv)); return PCH_ICP; default: return PCH_NONE; } } static bool intel_is_virt_pch(unsigned short id, unsigned short svendor, unsigned short sdevice) { return (id == INTEL_PCH_P2X_DEVICE_ID_TYPE || id == INTEL_PCH_P3X_DEVICE_ID_TYPE || (id == INTEL_PCH_QEMU_DEVICE_ID_TYPE && svendor == PCI_SUBVENDOR_ID_REDHAT_QUMRANET && sdevice == PCI_SUBDEVICE_ID_QEMU)); } static unsigned short intel_virt_detect_pch(const struct drm_i915_private *dev_priv) { unsigned short id = 0; /* * In a virtualized passthrough environment we can be in a * setup where the ISA bridge is not able to be passed through. * In this case, a south bridge can be emulated and we have to * make an educated guess as to which PCH is really there. */ if (IS_GEN5(dev_priv)) id = INTEL_PCH_IBX_DEVICE_ID_TYPE; else if (IS_GEN6(dev_priv) || IS_IVYBRIDGE(dev_priv)) id = INTEL_PCH_CPT_DEVICE_ID_TYPE; else if (IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv)) id = INTEL_PCH_LPT_LP_DEVICE_ID_TYPE; else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) id = INTEL_PCH_LPT_DEVICE_ID_TYPE; else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) id = INTEL_PCH_SPT_DEVICE_ID_TYPE; else if (IS_COFFEELAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) id = INTEL_PCH_CNP_DEVICE_ID_TYPE; else if (IS_ICELAKE(dev_priv)) id = INTEL_PCH_ICP_DEVICE_ID_TYPE; if (id) DRM_DEBUG_KMS("Assuming PCH ID %04x\n", id); else DRM_DEBUG_KMS("Assuming no PCH\n"); return id; } static void intel_detect_pch(struct drm_i915_private *dev_priv) { struct pci_dev *pch = NULL; /* * 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. */ while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) { unsigned short id; enum intel_pch pch_type; if (pch->vendor != PCI_VENDOR_ID_INTEL) continue; id = pch->device & INTEL_PCH_DEVICE_ID_MASK; pch_type = intel_pch_type(dev_priv, id); if (pch_type != PCH_NONE) { dev_priv->pch_type = pch_type; dev_priv->pch_id = id; break; } else if (intel_is_virt_pch(id, pch->subsystem_vendor, pch->subsystem_device)) { id = intel_virt_detect_pch(dev_priv); pch_type = intel_pch_type(dev_priv, id); /* Sanity check virtual PCH id */ if (WARN_ON(id && pch_type == PCH_NONE)) id = 0; dev_priv->pch_type = pch_type; dev_priv->pch_id = id; break; } } /* * Use PCH_NOP (PCH but no South Display) for PCH platforms without * display. */ if (pch && INTEL_INFO(dev_priv)->num_pipes == 0) { DRM_DEBUG_KMS("Display disabled, reverting to NOP PCH\n"); dev_priv->pch_type = PCH_NOP; dev_priv->pch_id = 0; } if (!pch) DRM_DEBUG_KMS("No PCH found.\n"); pci_dev_put(pch); } static int i915_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; drm_i915_getparam_t *param = data; int value; switch (param->param) { case I915_PARAM_IRQ_ACTIVE: case I915_PARAM_ALLOW_BATCHBUFFER: case I915_PARAM_LAST_DISPATCH: case I915_PARAM_HAS_EXEC_CONSTANTS: /* Reject all old ums/dri params. */ return -ENODEV; case I915_PARAM_CHIPSET_ID: value = pdev->device; break; case I915_PARAM_REVISION: value = pdev->revision; break; case I915_PARAM_NUM_FENCES_AVAIL: value = dev_priv->num_fence_regs; break; case I915_PARAM_HAS_OVERLAY: value = dev_priv->overlay ? 1 : 0; break; case I915_PARAM_HAS_BSD: value = !!dev_priv->engine[VCS]; break; case I915_PARAM_HAS_BLT: value = !!dev_priv->engine[BCS]; break; case I915_PARAM_HAS_VEBOX: value = !!dev_priv->engine[VECS]; break; case I915_PARAM_HAS_BSD2: value = !!dev_priv->engine[VCS2]; break; case I915_PARAM_HAS_LLC: value = HAS_LLC(dev_priv); break; case I915_PARAM_HAS_WT: value = HAS_WT(dev_priv); break; case I915_PARAM_HAS_ALIASING_PPGTT: value = USES_PPGTT(dev_priv); break; case I915_PARAM_HAS_SEMAPHORES: value = HAS_LEGACY_SEMAPHORES(dev_priv); break; case I915_PARAM_HAS_SECURE_BATCHES: value = capable(CAP_SYS_ADMIN); break; case I915_PARAM_CMD_PARSER_VERSION: value = i915_cmd_parser_get_version(dev_priv); break; case I915_PARAM_SUBSLICE_TOTAL: value = sseu_subslice_total(&INTEL_INFO(dev_priv)->sseu); if (!value) return -ENODEV; break; case I915_PARAM_EU_TOTAL: value = INTEL_INFO(dev_priv)->sseu.eu_total; if (!value) return -ENODEV; break; case I915_PARAM_HAS_GPU_RESET: value = i915_modparams.enable_hangcheck && intel_has_gpu_reset(dev_priv); if (value && intel_has_reset_engine(dev_priv)) value = 2; break; case I915_PARAM_HAS_RESOURCE_STREAMER: value = 0; break; case I915_PARAM_HAS_POOLED_EU: value = HAS_POOLED_EU(dev_priv); break; case I915_PARAM_MIN_EU_IN_POOL: value = INTEL_INFO(dev_priv)->sseu.min_eu_in_pool; break; case I915_PARAM_HUC_STATUS: value = intel_huc_check_status(&dev_priv->huc); if (value < 0) return value; break; case I915_PARAM_MMAP_GTT_VERSION: /* Though we've started our numbering from 1, and so class all * earlier versions as 0, in effect their value is undefined as * the ioctl will report EINVAL for the unknown param! */ value = i915_gem_mmap_gtt_version(); break; case I915_PARAM_HAS_SCHEDULER: value = dev_priv->caps.scheduler; break; case I915_PARAM_MMAP_VERSION: /* Remember to bump this if the version changes! */ case I915_PARAM_HAS_GEM: case I915_PARAM_HAS_PAGEFLIPPING: case I915_PARAM_HAS_EXECBUF2: /* depends on GEM */ case I915_PARAM_HAS_RELAXED_FENCING: case I915_PARAM_HAS_COHERENT_RINGS: case I915_PARAM_HAS_RELAXED_DELTA: case I915_PARAM_HAS_GEN7_SOL_RESET: case I915_PARAM_HAS_WAIT_TIMEOUT: case I915_PARAM_HAS_PRIME_VMAP_FLUSH: case I915_PARAM_HAS_PINNED_BATCHES: case I915_PARAM_HAS_EXEC_NO_RELOC: case I915_PARAM_HAS_EXEC_HANDLE_LUT: case I915_PARAM_HAS_COHERENT_PHYS_GTT: case I915_PARAM_HAS_EXEC_SOFTPIN: case I915_PARAM_HAS_EXEC_ASYNC: case I915_PARAM_HAS_EXEC_FENCE: case I915_PARAM_HAS_EXEC_CAPTURE: case I915_PARAM_HAS_EXEC_BATCH_FIRST: case I915_PARAM_HAS_EXEC_FENCE_ARRAY: /* For the time being all of these are always true; * if some supported hardware does not have one of these * features this value needs to be provided from * INTEL_INFO(), a feature macro, or similar. */ value = 1; break; case I915_PARAM_HAS_CONTEXT_ISOLATION: value = intel_engines_has_context_isolation(dev_priv); break; case I915_PARAM_SLICE_MASK: value = INTEL_INFO(dev_priv)->sseu.slice_mask; if (!value) return -ENODEV; break; case I915_PARAM_SUBSLICE_MASK: value = INTEL_INFO(dev_priv)->sseu.subslice_mask[0]; if (!value) return -ENODEV; break; case I915_PARAM_CS_TIMESTAMP_FREQUENCY: value = 1000 * INTEL_INFO(dev_priv)->cs_timestamp_frequency_khz; break; case I915_PARAM_MMAP_GTT_COHERENT: value = INTEL_INFO(dev_priv)->has_coherent_ggtt; break; default: DRM_DEBUG("Unknown parameter %d\n", param->param); return -EINVAL; } if (put_user(value, param->value)) return -EFAULT; return 0; } static int i915_get_bridge_dev(struct drm_i915_private *dev_priv) { int domain = pci_domain_nr(dev_priv->drm.pdev->bus); dev_priv->bridge_dev = pci_get_domain_bus_and_slot(domain, 0, PCI_DEVFN(0, 0)); if (!dev_priv->bridge_dev) { DRM_ERROR("bridge device not found\n"); return -1; } return 0; } /* Allocate space for the MCH regs if needed, return nonzero on error */ static int intel_alloc_mchbar_resource(struct drm_i915_private *dev_priv) { int reg = INTEL_GEN(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; u32 temp_lo, temp_hi = 0; u64 mchbar_addr; int ret; if (INTEL_GEN(dev_priv) >= 4) pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi); pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo); mchbar_addr = ((u64)temp_hi << 32) | temp_lo; /* If ACPI doesn't have it, assume we need to allocate it ourselves */ #ifdef CONFIG_PNP if (mchbar_addr && pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) return 0; #endif /* Get some space for it */ dev_priv->mch_res.name = "i915 MCHBAR"; dev_priv->mch_res.flags = IORESOURCE_MEM; ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, &dev_priv->mch_res, MCHBAR_SIZE, MCHBAR_SIZE, PCIBIOS_MIN_MEM, 0, pcibios_align_resource, dev_priv->bridge_dev); if (ret) { DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret); dev_priv->mch_res.start = 0; return ret; } if (INTEL_GEN(dev_priv) >= 4) pci_write_config_dword(dev_priv->bridge_dev, reg + 4, upper_32_bits(dev_priv->mch_res.start)); pci_write_config_dword(dev_priv->bridge_dev, reg, lower_32_bits(dev_priv->mch_res.start)); return 0; } /* Setup MCHBAR if possible, return true if we should disable it again */ static void intel_setup_mchbar(struct drm_i915_private *dev_priv) { int mchbar_reg = INTEL_GEN(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; u32 temp; bool enabled; if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) return; dev_priv->mchbar_need_disable = false; if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &temp); enabled = !!(temp & DEVEN_MCHBAR_EN); } else { pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); enabled = temp & 1; } /* If it's already enabled, don't have to do anything */ if (enabled) return; if (intel_alloc_mchbar_resource(dev_priv)) return; dev_priv->mchbar_need_disable = true; /* Space is allocated or reserved, so enable it. */ if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { pci_write_config_dword(dev_priv->bridge_dev, DEVEN, temp | DEVEN_MCHBAR_EN); } else { pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp); pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1); } } static void intel_teardown_mchbar(struct drm_i915_private *dev_priv) { int mchbar_reg = INTEL_GEN(dev_priv) >= 4 ? MCHBAR_I965 : MCHBAR_I915; if (dev_priv->mchbar_need_disable) { if (IS_I915G(dev_priv) || IS_I915GM(dev_priv)) { u32 deven_val; pci_read_config_dword(dev_priv->bridge_dev, DEVEN, &deven_val); deven_val &= ~DEVEN_MCHBAR_EN; pci_write_config_dword(dev_priv->bridge_dev, DEVEN, deven_val); } else { u32 mchbar_val; pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &mchbar_val); mchbar_val &= ~1; pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, mchbar_val); } } if (dev_priv->mch_res.start) release_resource(&dev_priv->mch_res); } /* true = enable decode, false = disable decoder */ static unsigned int i915_vga_set_decode(void *cookie, bool state) { struct drm_i915_private *dev_priv = cookie; intel_modeset_vga_set_state(dev_priv, state); if (state) return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM | VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; else return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM; } static int i915_resume_switcheroo(struct drm_device *dev); static int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state); static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state) { struct drm_device *dev = pci_get_drvdata(pdev); pm_message_t pmm = { .event = PM_EVENT_SUSPEND }; if (state == VGA_SWITCHEROO_ON) { pr_info("switched on\n"); dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; /* i915 resume handler doesn't set to D0 */ pci_set_power_state(pdev, PCI_D0); i915_resume_switcheroo(dev); dev->switch_power_state = DRM_SWITCH_POWER_ON; } else { pr_info("switched off\n"); dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; i915_suspend_switcheroo(dev, pmm); dev->switch_power_state = DRM_SWITCH_POWER_OFF; } } static bool i915_switcheroo_can_switch(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev); /* * FIXME: open_count is protected by drm_global_mutex but that would lead to * locking inversion with the driver load path. And the access here is * completely racy anyway. So don't bother with locking for now. */ return dev->open_count == 0; } static const struct vga_switcheroo_client_ops i915_switcheroo_ops = { .set_gpu_state = i915_switcheroo_set_state, .reprobe = NULL, .can_switch = i915_switcheroo_can_switch, }; static int i915_load_modeset_init(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; int ret; if (i915_inject_load_failure()) return -ENODEV; intel_bios_init(dev_priv); /* If we have > 1 VGA cards, then we need to arbitrate access * to the common VGA resources. * * If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA), * then we do not take part in VGA arbitration and the * vga_client_register() fails with -ENODEV. */ ret = vga_client_register(pdev, dev_priv, NULL, i915_vga_set_decode); if (ret && ret != -ENODEV) goto out; intel_register_dsm_handler(); ret = vga_switcheroo_register_client(pdev, &i915_switcheroo_ops, false); if (ret) goto cleanup_vga_client; /* must happen before intel_power_domains_init_hw() on VLV/CHV */ intel_update_rawclk(dev_priv); intel_power_domains_init_hw(dev_priv, false); intel_csr_ucode_init(dev_priv); ret = intel_irq_install(dev_priv); if (ret) goto cleanup_csr; intel_setup_gmbus(dev_priv); /* Important: The output setup functions called by modeset_init need * working irqs for e.g. gmbus and dp aux transfers. */ ret = intel_modeset_init(dev); if (ret) goto cleanup_irq; ret = i915_gem_init(dev_priv); if (ret) goto cleanup_modeset; intel_setup_overlay(dev_priv); if (INTEL_INFO(dev_priv)->num_pipes == 0) return 0; ret = intel_fbdev_init(dev); if (ret) goto cleanup_gem; /* Only enable hotplug handling once the fbdev is fully set up. */ intel_hpd_init(dev_priv); return 0; cleanup_gem: if (i915_gem_suspend(dev_priv)) DRM_ERROR("failed to idle hardware; continuing to unload!\n"); i915_gem_fini(dev_priv); cleanup_modeset: intel_modeset_cleanup(dev); cleanup_irq: drm_irq_uninstall(dev); intel_teardown_gmbus(dev_priv); cleanup_csr: intel_csr_ucode_fini(dev_priv); intel_power_domains_fini_hw(dev_priv); vga_switcheroo_unregister_client(pdev); cleanup_vga_client: vga_client_register(pdev, NULL, NULL, NULL); out: return ret; } static int i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv) { struct apertures_struct *ap; struct pci_dev *pdev = dev_priv->drm.pdev; struct i915_ggtt *ggtt = &dev_priv->ggtt; bool primary; int ret; ap = alloc_apertures(1); if (!ap) return -ENOMEM; ap->ranges[0].base = ggtt->gmadr.start; ap->ranges[0].size = ggtt->mappable_end; primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW; ret = drm_fb_helper_remove_conflicting_framebuffers(ap, "inteldrmfb", primary); kfree(ap); return ret; } #if !defined(CONFIG_VGA_CONSOLE) static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv) { return 0; } #elif !defined(CONFIG_DUMMY_CONSOLE) static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv) { return -ENODEV; } #else static int i915_kick_out_vgacon(struct drm_i915_private *dev_priv) { int ret = 0; DRM_INFO("Replacing VGA console driver\n"); console_lock(); if (con_is_bound(&vga_con)) ret = do_take_over_console(&dummy_con, 0, MAX_NR_CONSOLES - 1, 1); if (ret == 0) { ret = do_unregister_con_driver(&vga_con); /* Ignore "already unregistered". */ if (ret == -ENODEV) ret = 0; } console_unlock(); return ret; } #endif static void intel_init_dpio(struct drm_i915_private *dev_priv) { /* * IOSF_PORT_DPIO is used for VLV x2 PHY (DP/HDMI B and C), * CHV x1 PHY (DP/HDMI D) * IOSF_PORT_DPIO_2 is used for CHV x2 PHY (DP/HDMI B and C) */ if (IS_CHERRYVIEW(dev_priv)) { DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO_2; DPIO_PHY_IOSF_PORT(DPIO_PHY1) = IOSF_PORT_DPIO; } else if (IS_VALLEYVIEW(dev_priv)) { DPIO_PHY_IOSF_PORT(DPIO_PHY0) = IOSF_PORT_DPIO; } } static int i915_workqueues_init(struct drm_i915_private *dev_priv) { /* * The i915 workqueue is primarily used for batched retirement of * requests (and thus managing bo) once the task has been completed * by the GPU. i915_retire_requests() is called directly when we * need high-priority retirement, such as waiting for an explicit * bo. * * It is also used for periodic low-priority events, such as * idle-timers and recording error state. * * All tasks on the workqueue are expected to acquire the dev mutex * so there is no point in running more than one instance of the * workqueue at any time. Use an ordered one. */ dev_priv->wq = alloc_ordered_workqueue("i915", 0); if (dev_priv->wq == NULL) goto out_err; dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0); if (dev_priv->hotplug.dp_wq == NULL) goto out_free_wq; return 0; out_free_wq: destroy_workqueue(dev_priv->wq); out_err: DRM_ERROR("Failed to allocate workqueues.\n"); return -ENOMEM; } static void i915_engines_cleanup(struct drm_i915_private *i915) { struct intel_engine_cs *engine; enum intel_engine_id id; for_each_engine(engine, i915, id) kfree(engine); } static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv) { destroy_workqueue(dev_priv->hotplug.dp_wq); destroy_workqueue(dev_priv->wq); } /* * We don't keep the workarounds for pre-production hardware, so we expect our * driver to fail on these machines in one way or another. A little warning on * dmesg may help both the user and the bug triagers. * * Our policy for removing pre-production workarounds is to keep the * current gen workarounds as a guide to the bring-up of the next gen * (workarounds have a habit of persisting!). Anything older than that * should be removed along with the complications they introduce. */ static void intel_detect_preproduction_hw(struct drm_i915_private *dev_priv) { bool pre = false; pre |= IS_HSW_EARLY_SDV(dev_priv); pre |= IS_SKL_REVID(dev_priv, 0, SKL_REVID_F0); pre |= IS_BXT_REVID(dev_priv, 0, BXT_REVID_B_LAST); if (pre) { DRM_ERROR("This is a pre-production stepping. " "It may not be fully functional.\n"); add_taint(TAINT_MACHINE_CHECK, LOCKDEP_STILL_OK); } } /** * i915_driver_init_early - setup state not requiring device access * @dev_priv: device private * * Initialize everything that is a "SW-only" state, that is state not * requiring accessing the device or exposing the driver via kernel internal * or userspace interfaces. Example steps belonging here: lock initialization, * system memory allocation, setting up device specific attributes and * function hooks not requiring accessing the device. */ static int i915_driver_init_early(struct drm_i915_private *dev_priv) { int ret = 0; if (i915_inject_load_failure()) return -ENODEV; spin_lock_init(&dev_priv->irq_lock); spin_lock_init(&dev_priv->gpu_error.lock); mutex_init(&dev_priv->backlight_lock); spin_lock_init(&dev_priv->uncore.lock); mutex_init(&dev_priv->sb_lock); mutex_init(&dev_priv->av_mutex); mutex_init(&dev_priv->wm.wm_mutex); mutex_init(&dev_priv->pps_mutex); i915_memcpy_init_early(dev_priv); ret = i915_workqueues_init(dev_priv); if (ret < 0) goto err_engines; ret = i915_gem_init_early(dev_priv); if (ret < 0) goto err_workqueues; /* This must be called before any calls to HAS_PCH_* */ intel_detect_pch(dev_priv); intel_wopcm_init_early(&dev_priv->wopcm); intel_uc_init_early(dev_priv); intel_pm_setup(dev_priv); intel_init_dpio(dev_priv); ret = intel_power_domains_init(dev_priv); if (ret < 0) goto err_uc; intel_irq_init(dev_priv); intel_hangcheck_init(dev_priv); intel_init_display_hooks(dev_priv); intel_init_clock_gating_hooks(dev_priv); intel_init_audio_hooks(dev_priv); intel_display_crc_init(dev_priv); intel_detect_preproduction_hw(dev_priv); return 0; err_uc: intel_uc_cleanup_early(dev_priv); i915_gem_cleanup_early(dev_priv); err_workqueues: i915_workqueues_cleanup(dev_priv); err_engines: i915_engines_cleanup(dev_priv); return ret; } /** * i915_driver_cleanup_early - cleanup the setup done in i915_driver_init_early() * @dev_priv: device private */ static void i915_driver_cleanup_early(struct drm_i915_private *dev_priv) { intel_irq_fini(dev_priv); intel_power_domains_cleanup(dev_priv); intel_uc_cleanup_early(dev_priv); i915_gem_cleanup_early(dev_priv); i915_workqueues_cleanup(dev_priv); i915_engines_cleanup(dev_priv); } static int i915_mmio_setup(struct drm_i915_private *dev_priv) { struct pci_dev *pdev = dev_priv->drm.pdev; int mmio_bar; int mmio_size; mmio_bar = IS_GEN2(dev_priv) ? 1 : 0; /* * Before gen4, the registers and the GTT are behind different BARs. * However, from gen4 onwards, the registers and the GTT are shared * in the same BAR, so we want to restrict this ioremap from * clobbering the GTT which we want ioremap_wc instead. Fortunately, * the register BAR remains the same size for all the earlier * generations up to Ironlake. */ if (INTEL_GEN(dev_priv) < 5) mmio_size = 512 * 1024; else mmio_size = 2 * 1024 * 1024; dev_priv->regs = pci_iomap(pdev, mmio_bar, mmio_size); if (dev_priv->regs == NULL) { DRM_ERROR("failed to map registers\n"); return -EIO; } /* Try to make sure MCHBAR is enabled before poking at it */ intel_setup_mchbar(dev_priv); return 0; } static void i915_mmio_cleanup(struct drm_i915_private *dev_priv) { struct pci_dev *pdev = dev_priv->drm.pdev; intel_teardown_mchbar(dev_priv); pci_iounmap(pdev, dev_priv->regs); } /** * i915_driver_init_mmio - setup device MMIO * @dev_priv: device private * * Setup minimal device state necessary for MMIO accesses later in the * initialization sequence. The setup here should avoid any other device-wide * side effects or exposing the driver via kernel internal or user space * interfaces. */ static int i915_driver_init_mmio(struct drm_i915_private *dev_priv) { int ret; if (i915_inject_load_failure()) return -ENODEV; if (i915_get_bridge_dev(dev_priv)) return -EIO; ret = i915_mmio_setup(dev_priv); if (ret < 0) goto err_bridge; intel_uncore_init(dev_priv); intel_device_info_init_mmio(dev_priv); intel_uncore_prune(dev_priv); intel_uc_init_mmio(dev_priv); ret = intel_engines_init_mmio(dev_priv); if (ret) goto err_uncore; i915_gem_init_mmio(dev_priv); return 0; err_uncore: intel_uncore_fini(dev_priv); err_bridge: pci_dev_put(dev_priv->bridge_dev); return ret; } /** * i915_driver_cleanup_mmio - cleanup the setup done in i915_driver_init_mmio() * @dev_priv: device private */ static void i915_driver_cleanup_mmio(struct drm_i915_private *dev_priv) { intel_uncore_fini(dev_priv); i915_mmio_cleanup(dev_priv); pci_dev_put(dev_priv->bridge_dev); } static void intel_sanitize_options(struct drm_i915_private *dev_priv) { /* * i915.enable_ppgtt is read-only, so do an early pass to validate the * user's requested state against the hardware/driver capabilities. We * do this now so that we can print out any log messages once rather * than every time we check intel_enable_ppgtt(). */ i915_modparams.enable_ppgtt = intel_sanitize_enable_ppgtt(dev_priv, i915_modparams.enable_ppgtt); DRM_DEBUG_DRIVER("ppgtt mode: %i\n", i915_modparams.enable_ppgtt); intel_gvt_sanitize_options(dev_priv); } static enum dram_rank skl_get_dimm_rank(u8 size, u32 rank) { if (size == 0) return I915_DRAM_RANK_INVALID; if (rank == SKL_DRAM_RANK_SINGLE) return I915_DRAM_RANK_SINGLE; else if (rank == SKL_DRAM_RANK_DUAL) return I915_DRAM_RANK_DUAL; return I915_DRAM_RANK_INVALID; } static bool skl_is_16gb_dimm(enum dram_rank rank, u8 size, u8 width) { if (rank == I915_DRAM_RANK_SINGLE && width == 8 && size == 16) return true; else if (rank == I915_DRAM_RANK_DUAL && width == 8 && size == 32) return true; else if (rank == SKL_DRAM_RANK_SINGLE && width == 16 && size == 8) return true; else if (rank == SKL_DRAM_RANK_DUAL && width == 16 && size == 16) return true; return false; } static int skl_dram_get_channel_info(struct dram_channel_info *ch, u32 val) { u32 tmp_l, tmp_s; u32 s_val = val >> SKL_DRAM_S_SHIFT; if (!val) return -EINVAL; tmp_l = val & SKL_DRAM_SIZE_MASK; tmp_s = s_val & SKL_DRAM_SIZE_MASK; if (tmp_l == 0 && tmp_s == 0) return -EINVAL; ch->l_info.size = tmp_l; ch->s_info.size = tmp_s; tmp_l = (val & SKL_DRAM_WIDTH_MASK) >> SKL_DRAM_WIDTH_SHIFT; tmp_s = (s_val & SKL_DRAM_WIDTH_MASK) >> SKL_DRAM_WIDTH_SHIFT; ch->l_info.width = (1 << tmp_l) * 8; ch->s_info.width = (1 << tmp_s) * 8; tmp_l = val & SKL_DRAM_RANK_MASK; tmp_s = s_val & SKL_DRAM_RANK_MASK; ch->l_info.rank = skl_get_dimm_rank(ch->l_info.size, tmp_l); ch->s_info.rank = skl_get_dimm_rank(ch->s_info.size, tmp_s); if (ch->l_info.rank == I915_DRAM_RANK_DUAL || ch->s_info.rank == I915_DRAM_RANK_DUAL) ch->rank = I915_DRAM_RANK_DUAL; else if (ch->l_info.rank == I915_DRAM_RANK_SINGLE && ch->s_info.rank == I915_DRAM_RANK_SINGLE) ch->rank = I915_DRAM_RANK_DUAL; else ch->rank = I915_DRAM_RANK_SINGLE; ch->is_16gb_dimm = skl_is_16gb_dimm(ch->l_info.rank, ch->l_info.size, ch->l_info.width) || skl_is_16gb_dimm(ch->s_info.rank, ch->s_info.size, ch->s_info.width); DRM_DEBUG_KMS("(size:width:rank) L(%dGB:X%d:%s) S(%dGB:X%d:%s)\n", ch->l_info.size, ch->l_info.width, ch->l_info.rank ? "dual" : "single", ch->s_info.size, ch->s_info.width, ch->s_info.rank ? "dual" : "single"); return 0; } static bool intel_is_dram_symmetric(u32 val_ch0, u32 val_ch1, struct dram_channel_info *ch0) { return (val_ch0 == val_ch1 && (ch0->s_info.size == 0 || (ch0->l_info.size == ch0->s_info.size && ch0->l_info.width == ch0->s_info.width && ch0->l_info.rank == ch0->s_info.rank))); } static int skl_dram_get_channels_info(struct drm_i915_private *dev_priv) { struct dram_info *dram_info = &dev_priv->dram_info; struct dram_channel_info ch0, ch1; u32 val_ch0, val_ch1; int ret; val_ch0 = I915_READ(SKL_MAD_DIMM_CH0_0_0_0_MCHBAR_MCMAIN); ret = skl_dram_get_channel_info(&ch0, val_ch0); if (ret == 0) dram_info->num_channels++; val_ch1 = I915_READ(SKL_MAD_DIMM_CH1_0_0_0_MCHBAR_MCMAIN); ret = skl_dram_get_channel_info(&ch1, val_ch1); if (ret == 0) dram_info->num_channels++; if (dram_info->num_channels == 0) { DRM_INFO("Number of memory channels is zero\n"); return -EINVAL; } /* * If any of the channel is single rank channel, worst case output * will be same as if single rank memory, so consider single rank * memory. */ if (ch0.rank == I915_DRAM_RANK_SINGLE || ch1.rank == I915_DRAM_RANK_SINGLE) dram_info->rank = I915_DRAM_RANK_SINGLE; else dram_info->rank = max(ch0.rank, ch1.rank); if (dram_info->rank == I915_DRAM_RANK_INVALID) { DRM_INFO("couldn't get memory rank information\n"); return -EINVAL; } dram_info->is_16gb_dimm = ch0.is_16gb_dimm || ch1.is_16gb_dimm; dev_priv->dram_info.symmetric_memory = intel_is_dram_symmetric(val_ch0, val_ch1, &ch0); DRM_DEBUG_KMS("memory configuration is %sSymmetric memory\n", dev_priv->dram_info.symmetric_memory ? "" : "not "); return 0; } static int skl_get_dram_info(struct drm_i915_private *dev_priv) { struct dram_info *dram_info = &dev_priv->dram_info; u32 mem_freq_khz, val; int ret; ret = skl_dram_get_channels_info(dev_priv); if (ret) return ret; val = I915_READ(SKL_MC_BIOS_DATA_0_0_0_MCHBAR_PCU); mem_freq_khz = DIV_ROUND_UP((val & SKL_REQ_DATA_MASK) * SKL_MEMORY_FREQ_MULTIPLIER_HZ, 1000); dram_info->bandwidth_kbps = dram_info->num_channels * mem_freq_khz * 8; if (dram_info->bandwidth_kbps == 0) { DRM_INFO("Couldn't get system memory bandwidth\n"); return -EINVAL; } dram_info->valid = true; return 0; } static int bxt_get_dram_info(struct drm_i915_private *dev_priv) { struct dram_info *dram_info = &dev_priv->dram_info; u32 dram_channels; u32 mem_freq_khz, val; u8 num_active_channels; int i; val = I915_READ(BXT_P_CR_MC_BIOS_REQ_0_0_0); mem_freq_khz = DIV_ROUND_UP((val & BXT_REQ_DATA_MASK) * BXT_MEMORY_FREQ_MULTIPLIER_HZ, 1000); dram_channels = val & BXT_DRAM_CHANNEL_ACTIVE_MASK; num_active_channels = hweight32(dram_channels); /* Each active bit represents 4-byte channel */ dram_info->bandwidth_kbps = (mem_freq_khz * num_active_channels * 4); if (dram_info->bandwidth_kbps == 0) { DRM_INFO("Couldn't get system memory bandwidth\n"); return -EINVAL; } /* * Now read each DUNIT8/9/10/11 to check the rank of each dimms. */ for (i = BXT_D_CR_DRP0_DUNIT_START; i <= BXT_D_CR_DRP0_DUNIT_END; i++) { u8 size, width; enum dram_rank rank; u32 tmp; val = I915_READ(BXT_D_CR_DRP0_DUNIT(i)); if (val == 0xFFFFFFFF) continue; dram_info->num_channels++; tmp = val & BXT_DRAM_RANK_MASK; if (tmp == BXT_DRAM_RANK_SINGLE) rank = I915_DRAM_RANK_SINGLE; else if (tmp == BXT_DRAM_RANK_DUAL) rank = I915_DRAM_RANK_DUAL; else rank = I915_DRAM_RANK_INVALID; tmp = val & BXT_DRAM_SIZE_MASK; if (tmp == BXT_DRAM_SIZE_4GB) size = 4; else if (tmp == BXT_DRAM_SIZE_6GB) size = 6; else if (tmp == BXT_DRAM_SIZE_8GB) size = 8; else if (tmp == BXT_DRAM_SIZE_12GB) size = 12; else if (tmp == BXT_DRAM_SIZE_16GB) size = 16; else size = 0; tmp = (val & BXT_DRAM_WIDTH_MASK) >> BXT_DRAM_WIDTH_SHIFT; width = (1 << tmp) * 8; DRM_DEBUG_KMS("dram size:%dGB width:X%d rank:%s\n", size, width, rank == I915_DRAM_RANK_SINGLE ? "single" : rank == I915_DRAM_RANK_DUAL ? "dual" : "unknown"); /* * If any of the channel is single rank channel, * worst case output will be same as if single rank * memory, so consider single rank memory. */ if (dram_info->rank == I915_DRAM_RANK_INVALID) dram_info->rank = rank; else if (rank == I915_DRAM_RANK_SINGLE) dram_info->rank = I915_DRAM_RANK_SINGLE; } if (dram_info->rank == I915_DRAM_RANK_INVALID) { DRM_INFO("couldn't get memory rank information\n"); return -EINVAL; } dram_info->valid = true; return 0; } static void intel_get_dram_info(struct drm_i915_private *dev_priv) { struct dram_info *dram_info = &dev_priv->dram_info; char bandwidth_str[32]; int ret; dram_info->valid = false; dram_info->rank = I915_DRAM_RANK_INVALID; dram_info->bandwidth_kbps = 0; dram_info->num_channels = 0; /* * Assume 16Gb DIMMs are present until proven otherwise. * This is only used for the level 0 watermark latency * w/a which does not apply to bxt/glk. */ dram_info->is_16gb_dimm = !IS_GEN9_LP(dev_priv); if (INTEL_GEN(dev_priv) < 9 || IS_GEMINILAKE(dev_priv)) return; /* Need to calculate bandwidth only for Gen9 */ if (IS_BROXTON(dev_priv)) ret = bxt_get_dram_info(dev_priv); else if (INTEL_GEN(dev_priv) == 9) ret = skl_get_dram_info(dev_priv); else ret = skl_dram_get_channels_info(dev_priv); if (ret) return; if (dram_info->bandwidth_kbps) sprintf(bandwidth_str, "%d KBps", dram_info->bandwidth_kbps); else sprintf(bandwidth_str, "unknown"); DRM_DEBUG_KMS("DRAM bandwidth:%s, total-channels: %u\n", bandwidth_str, dram_info->num_channels); DRM_DEBUG_KMS("DRAM rank: %s rank 16GB-dimm:%s\n", (dram_info->rank == I915_DRAM_RANK_DUAL) ? "dual" : "single", yesno(dram_info->is_16gb_dimm)); } /** * i915_driver_init_hw - setup state requiring device access * @dev_priv: device private * * Setup state that requires accessing the device, but doesn't require * exposing the driver via kernel internal or userspace interfaces. */ static int i915_driver_init_hw(struct drm_i915_private *dev_priv) { struct pci_dev *pdev = dev_priv->drm.pdev; int ret; if (i915_inject_load_failure()) return -ENODEV; intel_device_info_runtime_init(mkwrite_device_info(dev_priv)); intel_sanitize_options(dev_priv); i915_perf_init(dev_priv); ret = i915_ggtt_probe_hw(dev_priv); if (ret) goto err_perf; /* * WARNING: Apparently we must kick fbdev drivers before vgacon, * otherwise the vga fbdev driver falls over. */ ret = i915_kick_out_firmware_fb(dev_priv); if (ret) { DRM_ERROR("failed to remove conflicting framebuffer drivers\n"); goto err_ggtt; } ret = i915_kick_out_vgacon(dev_priv); if (ret) { DRM_ERROR("failed to remove conflicting VGA console\n"); goto err_ggtt; } ret = i915_ggtt_init_hw(dev_priv); if (ret) goto err_ggtt; ret = i915_ggtt_enable_hw(dev_priv); if (ret) { DRM_ERROR("failed to enable GGTT\n"); goto err_ggtt; } pci_set_master(pdev); /* overlay on gen2 is broken and can't address above 1G */ if (IS_GEN2(dev_priv)) { ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(30)); if (ret) { DRM_ERROR("failed to set DMA mask\n"); goto err_ggtt; } } /* 965GM sometimes incorrectly writes to hardware status page (HWS) * using 32bit addressing, overwriting memory if HWS is located * above 4GB. * * The documentation also mentions an issue with undefined * behaviour if any general state is accessed within a page above 4GB, * which also needs to be handled carefully. */ if (IS_I965G(dev_priv) || IS_I965GM(dev_priv)) { ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); if (ret) { DRM_ERROR("failed to set DMA mask\n"); goto err_ggtt; } } pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); intel_uncore_sanitize(dev_priv); intel_gt_init_workarounds(dev_priv); i915_gem_load_init_fences(dev_priv); /* On the 945G/GM, the chipset reports the MSI capability on the * integrated graphics even though the support isn't actually there * according to the published specs. It doesn't appear to function * correctly in testing on 945G. * This may be a side effect of MSI having been made available for PEG * and the registers being closely associated. * * According to chipset errata, on the 965GM, MSI interrupts may * be lost or delayed, and was defeatured. MSI interrupts seem to * get lost on g4x as well, and interrupt delivery seems to stay * properly dead afterwards. So we'll just disable them for all * pre-gen5 chipsets. * * dp aux and gmbus irq on gen4 seems to be able to generate legacy * interrupts even when in MSI mode. This results in spurious * interrupt warnings if the legacy irq no. is shared with another * device. The kernel then disables that interrupt source and so * prevents the other device from working properly. */ if (INTEL_GEN(dev_priv) >= 5) { if (pci_enable_msi(pdev) < 0) DRM_DEBUG_DRIVER("can't enable MSI"); } ret = intel_gvt_init(dev_priv); if (ret) goto err_msi; intel_opregion_setup(dev_priv); /* * Fill the dram structure to get the system raw bandwidth and * dram info. This will be used for memory latency calculation. */ intel_get_dram_info(dev_priv); return 0; err_msi: if (pdev->msi_enabled) pci_disable_msi(pdev); pm_qos_remove_request(&dev_priv->pm_qos); err_ggtt: i915_ggtt_cleanup_hw(dev_priv); err_perf: i915_perf_fini(dev_priv); return ret; } /** * i915_driver_cleanup_hw - cleanup the setup done in i915_driver_init_hw() * @dev_priv: device private */ static void i915_driver_cleanup_hw(struct drm_i915_private *dev_priv) { struct pci_dev *pdev = dev_priv->drm.pdev; i915_perf_fini(dev_priv); if (pdev->msi_enabled) pci_disable_msi(pdev); pm_qos_remove_request(&dev_priv->pm_qos); i915_ggtt_cleanup_hw(dev_priv); } /** * i915_driver_register - register the driver with the rest of the system * @dev_priv: device private * * Perform any steps necessary to make the driver available via kernel * internal or userspace interfaces. */ static void i915_driver_register(struct drm_i915_private *dev_priv) { struct drm_device *dev = &dev_priv->drm; i915_gem_shrinker_register(dev_priv); i915_pmu_register(dev_priv); /* * Notify a valid surface after modesetting, * when running inside a VM. */ if (intel_vgpu_active(dev_priv)) I915_WRITE(vgtif_reg(display_ready), VGT_DRV_DISPLAY_READY); /* Reveal our presence to userspace */ if (drm_dev_register(dev, 0) == 0) { i915_debugfs_register(dev_priv); i915_setup_sysfs(dev_priv); /* Depends on sysfs having been initialized */ i915_perf_register(dev_priv); } else DRM_ERROR("Failed to register driver for userspace access!\n"); if (INTEL_INFO(dev_priv)->num_pipes) { /* Must be done after probing outputs */ intel_opregion_register(dev_priv); acpi_video_register(); } if (IS_GEN5(dev_priv)) intel_gpu_ips_init(dev_priv); intel_audio_init(dev_priv); /* * Some ports require correctly set-up hpd registers for detection to * work properly (leading to ghost connected connector status), e.g. VGA * on gm45. Hence we can only set up the initial fbdev config after hpd * irqs are fully enabled. We do it last so that the async config * cannot run before the connectors are registered. */ intel_fbdev_initial_config_async(dev); /* * We need to coordinate the hotplugs with the asynchronous fbdev * configuration, for which we use the fbdev->async_cookie. */ if (INTEL_INFO(dev_priv)->num_pipes) drm_kms_helper_poll_init(dev); intel_power_domains_enable(dev_priv); intel_runtime_pm_enable(dev_priv); } /** * i915_driver_unregister - cleanup the registration done in i915_driver_regiser() * @dev_priv: device private */ static void i915_driver_unregister(struct drm_i915_private *dev_priv) { intel_runtime_pm_disable(dev_priv); intel_power_domains_disable(dev_priv); intel_fbdev_unregister(dev_priv); intel_audio_deinit(dev_priv); /* * After flushing the fbdev (incl. a late async config which will * have delayed queuing of a hotplug event), then flush the hotplug * events. */ drm_kms_helper_poll_fini(&dev_priv->drm); intel_gpu_ips_teardown(); acpi_video_unregister(); intel_opregion_unregister(dev_priv); i915_perf_unregister(dev_priv); i915_pmu_unregister(dev_priv); i915_teardown_sysfs(dev_priv); drm_dev_unregister(&dev_priv->drm); i915_gem_shrinker_unregister(dev_priv); } static void i915_welcome_messages(struct drm_i915_private *dev_priv) { if (drm_debug & DRM_UT_DRIVER) { struct drm_printer p = drm_debug_printer("i915 device info:"); intel_device_info_dump(&dev_priv->info, &p); intel_device_info_dump_runtime(&dev_priv->info, &p); } if (IS_ENABLED(CONFIG_DRM_I915_DEBUG)) DRM_INFO("DRM_I915_DEBUG enabled\n"); if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)) DRM_INFO("DRM_I915_DEBUG_GEM enabled\n"); if (IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)) DRM_INFO("DRM_I915_DEBUG_RUNTIME_PM enabled\n"); } static struct drm_i915_private * i915_driver_create(struct pci_dev *pdev, const struct pci_device_id *ent) { const struct intel_device_info *match_info = (struct intel_device_info *)ent->driver_data; struct intel_device_info *device_info; struct drm_i915_private *i915; i915 = kzalloc(sizeof(*i915), GFP_KERNEL); if (!i915) return NULL; if (drm_dev_init(&i915->drm, &driver, &pdev->dev)) { kfree(i915); return NULL; } i915->drm.pdev = pdev; i915->drm.dev_private = i915; pci_set_drvdata(pdev, &i915->drm); /* Setup the write-once "constant" device info */ device_info = mkwrite_device_info(i915); memcpy(device_info, match_info, sizeof(*device_info)); device_info->device_id = pdev->device; BUILD_BUG_ON(INTEL_MAX_PLATFORMS > sizeof(device_info->platform_mask) * BITS_PER_BYTE); BUG_ON(device_info->gen > sizeof(device_info->gen_mask) * BITS_PER_BYTE); return i915; } static void i915_driver_destroy(struct drm_i915_private *i915) { struct pci_dev *pdev = i915->drm.pdev; drm_dev_fini(&i915->drm); kfree(i915); /* And make sure we never chase our dangling pointer from pci_dev */ pci_set_drvdata(pdev, NULL); } /** * i915_driver_load - setup chip and create an initial config * @pdev: PCI device * @ent: matching PCI ID entry * * The driver load routine has to do several things: * - drive output discovery via intel_modeset_init() * - initialize the memory manager * - allocate initial config memory * - setup the DRM framebuffer with the allocated memory */ int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent) { const struct intel_device_info *match_info = (struct intel_device_info *)ent->driver_data; struct drm_i915_private *dev_priv; int ret; dev_priv = i915_driver_create(pdev, ent); if (!dev_priv) return -ENOMEM; /* Disable nuclear pageflip by default on pre-ILK */ if (!i915_modparams.nuclear_pageflip && match_info->gen < 5) dev_priv->drm.driver_features &= ~DRIVER_ATOMIC; ret = pci_enable_device(pdev); if (ret) goto out_fini; ret = i915_driver_init_early(dev_priv); if (ret < 0) goto out_pci_disable; disable_rpm_wakeref_asserts(dev_priv); ret = i915_driver_init_mmio(dev_priv); if (ret < 0) goto out_runtime_pm_put; ret = i915_driver_init_hw(dev_priv); if (ret < 0) goto out_cleanup_mmio; /* * TODO: move the vblank init and parts of modeset init steps into one * of the i915_driver_init_/i915_driver_register functions according * to the role/effect of the given init step. */ if (INTEL_INFO(dev_priv)->num_pipes) { ret = drm_vblank_init(&dev_priv->drm, INTEL_INFO(dev_priv)->num_pipes); if (ret) goto out_cleanup_hw; } ret = i915_load_modeset_init(&dev_priv->drm); if (ret < 0) goto out_cleanup_hw; i915_driver_register(dev_priv); intel_init_ipc(dev_priv); enable_rpm_wakeref_asserts(dev_priv); i915_welcome_messages(dev_priv); return 0; out_cleanup_hw: i915_driver_cleanup_hw(dev_priv); out_cleanup_mmio: i915_driver_cleanup_mmio(dev_priv); out_runtime_pm_put: enable_rpm_wakeref_asserts(dev_priv); i915_driver_cleanup_early(dev_priv); out_pci_disable: pci_disable_device(pdev); out_fini: i915_load_error(dev_priv, "Device initialization failed (%d)\n", ret); i915_driver_destroy(dev_priv); return ret; } void i915_driver_unload(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; disable_rpm_wakeref_asserts(dev_priv); i915_driver_unregister(dev_priv); if (i915_gem_suspend(dev_priv)) DRM_ERROR("failed to idle hardware; continuing to unload!\n"); drm_atomic_helper_shutdown(dev); intel_gvt_cleanup(dev_priv); intel_modeset_cleanup(dev); intel_bios_cleanup(dev_priv); vga_switcheroo_unregister_client(pdev); vga_client_register(pdev, NULL, NULL, NULL); intel_csr_ucode_fini(dev_priv); /* Free error state after interrupts are fully disabled. */ cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work); i915_reset_error_state(dev_priv); i915_gem_fini(dev_priv); intel_fbc_cleanup_cfb(dev_priv); intel_power_domains_fini_hw(dev_priv); i915_driver_cleanup_hw(dev_priv); i915_driver_cleanup_mmio(dev_priv); enable_rpm_wakeref_asserts(dev_priv); WARN_ON(atomic_read(&dev_priv->runtime_pm.wakeref_count)); } static void i915_driver_release(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); i915_driver_cleanup_early(dev_priv); i915_driver_destroy(dev_priv); } static int i915_driver_open(struct drm_device *dev, struct drm_file *file) { struct drm_i915_private *i915 = to_i915(dev); int ret; ret = i915_gem_open(i915, file); if (ret) return ret; return 0; } /** * i915_driver_lastclose - clean up after all DRM clients have exited * @dev: DRM device * * Take care of cleaning up after all DRM clients have exited. In the * mode setting case, we want to restore the kernel's initial mode (just * in case the last client left us in a bad state). * * Additionally, in the non-mode setting case, we'll tear down the GTT * and DMA structures, since the kernel won't be using them, and clea * up any GEM state. */ static void i915_driver_lastclose(struct drm_device *dev) { intel_fbdev_restore_mode(dev); vga_switcheroo_process_delayed_switch(); } static void i915_driver_postclose(struct drm_device *dev, struct drm_file *file) { struct drm_i915_file_private *file_priv = file->driver_priv; mutex_lock(&dev->struct_mutex); i915_gem_context_close(file); i915_gem_release(dev, file); mutex_unlock(&dev->struct_mutex); kfree(file_priv); } static void intel_suspend_encoders(struct drm_i915_private *dev_priv) { struct drm_device *dev = &dev_priv->drm; struct intel_encoder *encoder; drm_modeset_lock_all(dev); for_each_intel_encoder(dev, encoder) if (encoder->suspend) encoder->suspend(encoder); drm_modeset_unlock_all(dev); } static int vlv_resume_prepare(struct drm_i915_private *dev_priv, bool rpm_resume); static int vlv_suspend_complete(struct drm_i915_private *dev_priv); static bool suspend_to_idle(struct drm_i915_private *dev_priv) { #if IS_ENABLED(CONFIG_ACPI_SLEEP) if (acpi_target_system_state() < ACPI_STATE_S3) return true; #endif return false; } static int i915_drm_prepare(struct drm_device *dev) { struct drm_i915_private *i915 = to_i915(dev); int err; /* * NB intel_display_suspend() may issue new requests after we've * ostensibly marked the GPU as ready-to-sleep here. We need to * split out that work and pull it forward so that after point, * the GPU is not woken again. */ err = i915_gem_suspend(i915); if (err) dev_err(&i915->drm.pdev->dev, "GEM idle failed, suspend/resume might fail\n"); return err; } static int i915_drm_suspend(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; pci_power_t opregion_target_state; disable_rpm_wakeref_asserts(dev_priv); /* We do a lot of poking in a lot of registers, make sure they work * properly. */ intel_power_domains_disable(dev_priv); drm_kms_helper_poll_disable(dev); pci_save_state(pdev); intel_display_suspend(dev); intel_dp_mst_suspend(dev_priv); intel_runtime_pm_disable_interrupts(dev_priv); intel_hpd_cancel_work(dev_priv); intel_suspend_encoders(dev_priv); intel_suspend_hw(dev_priv); i915_gem_suspend_gtt_mappings(dev_priv); i915_save_state(dev_priv); opregion_target_state = suspend_to_idle(dev_priv) ? PCI_D1 : PCI_D3cold; intel_opregion_notify_adapter(dev_priv, opregion_target_state); intel_opregion_unregister(dev_priv); intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED, true); dev_priv->suspend_count++; intel_csr_ucode_suspend(dev_priv); enable_rpm_wakeref_asserts(dev_priv); return 0; } static enum i915_drm_suspend_mode get_suspend_mode(struct drm_i915_private *dev_priv, bool hibernate) { if (hibernate) return I915_DRM_SUSPEND_HIBERNATE; if (suspend_to_idle(dev_priv)) return I915_DRM_SUSPEND_IDLE; return I915_DRM_SUSPEND_MEM; } static int i915_drm_suspend_late(struct drm_device *dev, bool hibernation) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; int ret; disable_rpm_wakeref_asserts(dev_priv); i915_gem_suspend_late(dev_priv); intel_uncore_suspend(dev_priv); intel_power_domains_suspend(dev_priv, get_suspend_mode(dev_priv, hibernation)); ret = 0; if (IS_GEN9_LP(dev_priv)) bxt_enable_dc9(dev_priv); else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) hsw_enable_pc8(dev_priv); else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) ret = vlv_suspend_complete(dev_priv); if (ret) { DRM_ERROR("Suspend complete failed: %d\n", ret); intel_power_domains_resume(dev_priv); goto out; } pci_disable_device(pdev); /* * During hibernation on some platforms the BIOS may try to access * the device even though it's already in D3 and hang the machine. So * leave the device in D0 on those platforms and hope the BIOS will * power down the device properly. The issue was seen on multiple old * GENs with different BIOS vendors, so having an explicit blacklist * is inpractical; apply the workaround on everything pre GEN6. The * platforms where the issue was seen: * Lenovo Thinkpad X301, X61s, X60, T60, X41 * Fujitsu FSC S7110 * Acer Aspire 1830T */ if (!(hibernation && INTEL_GEN(dev_priv) < 6)) pci_set_power_state(pdev, PCI_D3hot); out: enable_rpm_wakeref_asserts(dev_priv); return ret; } static int i915_suspend_switcheroo(struct drm_device *dev, pm_message_t state) { int error; if (!dev) { DRM_ERROR("dev: %p\n", dev); DRM_ERROR("DRM not initialized, aborting suspend.\n"); return -ENODEV; } if (WARN_ON_ONCE(state.event != PM_EVENT_SUSPEND && state.event != PM_EVENT_FREEZE)) return -EINVAL; if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; error = i915_drm_suspend(dev); if (error) return error; return i915_drm_suspend_late(dev, false); } static int i915_drm_resume(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); int ret; disable_rpm_wakeref_asserts(dev_priv); intel_sanitize_gt_powersave(dev_priv); i915_gem_sanitize(dev_priv); ret = i915_ggtt_enable_hw(dev_priv); if (ret) DRM_ERROR("failed to re-enable GGTT\n"); intel_csr_ucode_resume(dev_priv); i915_restore_state(dev_priv); intel_pps_unlock_regs_wa(dev_priv); intel_opregion_setup(dev_priv); intel_init_pch_refclk(dev_priv); /* * Interrupts have to be enabled before any batches are run. If not the * GPU will hang. i915_gem_init_hw() will initiate batches to * update/restore the context. * * drm_mode_config_reset() needs AUX interrupts. * * Modeset enabling in intel_modeset_init_hw() also needs working * interrupts. */ intel_runtime_pm_enable_interrupts(dev_priv); drm_mode_config_reset(dev); i915_gem_resume(dev_priv); intel_modeset_init_hw(dev); intel_init_clock_gating(dev_priv); spin_lock_irq(&dev_priv->irq_lock); if (dev_priv->display.hpd_irq_setup) dev_priv->display.hpd_irq_setup(dev_priv); spin_unlock_irq(&dev_priv->irq_lock); intel_dp_mst_resume(dev_priv); intel_display_resume(dev); drm_kms_helper_poll_enable(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 lose hotplug * notifications. * */ intel_hpd_init(dev_priv); intel_opregion_register(dev_priv); intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING, false); intel_opregion_notify_adapter(dev_priv, PCI_D0); intel_power_domains_enable(dev_priv); enable_rpm_wakeref_asserts(dev_priv); return 0; } static int i915_drm_resume_early(struct drm_device *dev) { struct drm_i915_private *dev_priv = to_i915(dev); struct pci_dev *pdev = dev_priv->drm.pdev; int ret; /* * We have a resume ordering issue with the snd-hda driver also * requiring our device to be power up. Due to the lack of a * parent/child relationship we currently solve this with an early * resume hook. * * FIXME: This should be solved with a special hdmi sink device or * similar so that power domains can be employed. */ /* * Note that we need to set the power state explicitly, since we * powered off the device during freeze and the PCI core won't power * it back up for us during thaw. Powering off the device during * freeze is not a hard requirement though, and during the * suspend/resume phases the PCI core makes sure we get here with the * device powered on. So in case we change our freeze logic and keep * the device powered we can also remove the following set power state * call. */ ret = pci_set_power_state(pdev, PCI_D0); if (ret) { DRM_ERROR("failed to set PCI D0 power state (%d)\n", ret); return ret; } /* * Note that pci_enable_device() first enables any parent bridge * device and only then sets the power state for this device. The * bridge enabling is a nop though, since bridge devices are resumed * first. The order of enabling power and enabling the device is * imposed by the PCI core as described above, so here we preserve the * same order for the freeze/thaw phases. * * TODO: eventually we should remove pci_disable_device() / * pci_enable_enable_device() from suspend/resume. Due to how they * depend on the device enable refcount we can't anyway depend on them * disabling/enabling the device. */ if (pci_enable_device(pdev)) return -EIO; pci_set_master(pdev); disable_rpm_wakeref_asserts(dev_priv); if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) ret = vlv_resume_prepare(dev_priv, false); if (ret) DRM_ERROR("Resume prepare failed: %d, continuing anyway\n", ret); intel_uncore_resume_early(dev_priv); if (IS_GEN9_LP(dev_priv)) { gen9_sanitize_dc_state(dev_priv); bxt_disable_dc9(dev_priv); } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { hsw_disable_pc8(dev_priv); } intel_uncore_sanitize(dev_priv); intel_power_domains_resume(dev_priv); intel_engines_sanitize(dev_priv); enable_rpm_wakeref_asserts(dev_priv); return ret; } static int i915_resume_switcheroo(struct drm_device *dev) { int ret; if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; ret = i915_drm_resume_early(dev); if (ret) return ret; return i915_drm_resume(dev); } /** * i915_reset - reset chip after a hang * @i915: #drm_i915_private to reset * @stalled_mask: mask of the stalled engines with the guilty requests * @reason: user error message for why we are resetting * * Reset the chip. Useful if a hang is detected. Marks the device as wedged * on failure. * * Caller must hold the struct_mutex. * * 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 */ void i915_reset(struct drm_i915_private *i915, unsigned int stalled_mask, const char *reason) { struct i915_gpu_error *error = &i915->gpu_error; int ret; int i; GEM_TRACE("flags=%lx\n", error->flags); might_sleep(); lockdep_assert_held(&i915->drm.struct_mutex); GEM_BUG_ON(!test_bit(I915_RESET_BACKOFF, &error->flags)); if (!test_bit(I915_RESET_HANDOFF, &error->flags)) return; /* Clear any previous failed attempts at recovery. Time to try again. */ if (!i915_gem_unset_wedged(i915)) goto wakeup; if (reason) dev_notice(i915->drm.dev, "Resetting chip for %s\n", reason); error->reset_count++; ret = i915_gem_reset_prepare(i915); if (ret) { dev_err(i915->drm.dev, "GPU recovery failed\n"); goto taint; } if (!intel_has_gpu_reset(i915)) { if (i915_modparams.reset) dev_err(i915->drm.dev, "GPU reset not supported\n"); else DRM_DEBUG_DRIVER("GPU reset disabled\n"); goto error; } for (i = 0; i < 3; i++) { ret = intel_gpu_reset(i915, ALL_ENGINES); if (ret == 0) break; msleep(100); } if (ret) { dev_err(i915->drm.dev, "Failed to reset chip\n"); goto taint; } /* Ok, now get things going again... */ /* * Everything depends on having the GTT running, so we need to start * there. */ ret = i915_ggtt_enable_hw(i915); if (ret) { DRM_ERROR("Failed to re-enable GGTT following reset (%d)\n", ret); goto error; } i915_gem_reset(i915, stalled_mask); intel_overlay_reset(i915); /* * 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). */ ret = i915_gem_init_hw(i915); if (ret) { DRM_ERROR("Failed to initialise HW following reset (%d)\n", ret); goto error; } i915_queue_hangcheck(i915); finish: i915_gem_reset_finish(i915); wakeup: clear_bit(I915_RESET_HANDOFF, &error->flags); wake_up_bit(&error->flags, I915_RESET_HANDOFF); return; taint: /* * History tells us that if we cannot reset the GPU now, we * never will. This then impacts everything that is run * subsequently. On failing the reset, we mark the driver * as wedged, preventing further execution on the GPU. * We also want to go one step further and add a taint to the * kernel so that any subsequent faults can be traced back to * this failure. This is important for CI, where if the * GPU/driver fails we would like to reboot and restart testing * rather than continue on into oblivion. For everyone else, * the system should still plod along, but they have been warned! */ add_taint(TAINT_WARN, LOCKDEP_STILL_OK); error: i915_gem_set_wedged(i915); i915_retire_requests(i915); goto finish; } static inline int intel_gt_reset_engine(struct drm_i915_private *dev_priv, struct intel_engine_cs *engine) { return intel_gpu_reset(dev_priv, intel_engine_flag(engine)); } /** * i915_reset_engine - reset GPU engine to recover from a hang * @engine: engine to reset * @msg: reason for GPU reset; or NULL for no dev_notice() * * Reset a specific GPU engine. Useful if a hang is detected. * Returns zero on successful reset or otherwise an error code. * * Procedure is: * - identifies the request that caused the hang and it is dropped * - reset engine (which will force the engine to idle) * - re-init/configure engine */ int i915_reset_engine(struct intel_engine_cs *engine, const char *msg) { struct i915_gpu_error *error = &engine->i915->gpu_error; struct i915_request *active_request; int ret; GEM_TRACE("%s flags=%lx\n", engine->name, error->flags); GEM_BUG_ON(!test_bit(I915_RESET_ENGINE + engine->id, &error->flags)); active_request = i915_gem_reset_prepare_engine(engine); if (IS_ERR_OR_NULL(active_request)) { /* Either the previous reset failed, or we pardon the reset. */ ret = PTR_ERR(active_request); goto out; } if (msg) dev_notice(engine->i915->drm.dev, "Resetting %s for %s\n", engine->name, msg); error->reset_engine_count[engine->id]++; if (!engine->i915->guc.execbuf_client) ret = intel_gt_reset_engine(engine->i915, engine); else ret = intel_guc_reset_engine(&engine->i915->guc, engine); if (ret) { /* If we fail here, we expect to fallback to a global reset */ DRM_DEBUG_DRIVER("%sFailed to reset %s, ret=%d\n", engine->i915->guc.execbuf_client ? "GuC " : "", engine->name, ret); goto out; } /* * The request that caused the hang is stuck on elsp, we know the * active request and can drop it, adjust head to skip the offending * request to resume executing remaining requests in the queue. */ i915_gem_reset_engine(engine, active_request, true); /* * The engine and its registers (and workarounds in case of render) * have been reset to their default values. Follow the init_ring * process to program RING_MODE, HWSP and re-enable submission. */ ret = engine->init_hw(engine); if (ret) goto out; out: intel_engine_cancel_stop_cs(engine); i915_gem_reset_finish_engine(engine); return ret; } static int i915_pm_prepare(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); struct drm_device *dev = pci_get_drvdata(pdev); if (!dev) { dev_err(kdev, "DRM not initialized, aborting suspend.\n"); return -ENODEV; } if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_prepare(dev); } static int i915_pm_suspend(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); struct drm_device *dev = pci_get_drvdata(pdev); if (!dev) { dev_err(kdev, "DRM not initialized, aborting suspend.\n"); return -ENODEV; } if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_suspend(dev); } static int i915_pm_suspend_late(struct device *kdev) { struct drm_device *dev = &kdev_to_i915(kdev)->drm; /* * We have a suspend ordering issue with the snd-hda driver also * requiring our device to be power up. Due to the lack of a * parent/child relationship we currently solve this with an late * suspend hook. * * FIXME: This should be solved with a special hdmi sink device or * similar so that power domains can be employed. */ if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_suspend_late(dev, false); } static int i915_pm_poweroff_late(struct device *kdev) { struct drm_device *dev = &kdev_to_i915(kdev)->drm; if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_suspend_late(dev, true); } static int i915_pm_resume_early(struct device *kdev) { struct drm_device *dev = &kdev_to_i915(kdev)->drm; if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_resume_early(dev); } static int i915_pm_resume(struct device *kdev) { struct drm_device *dev = &kdev_to_i915(kdev)->drm; if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; return i915_drm_resume(dev); } /* freeze: before creating the hibernation_image */ static int i915_pm_freeze(struct device *kdev) { struct drm_device *dev = &kdev_to_i915(kdev)->drm; int ret; if (dev->switch_power_state != DRM_SWITCH_POWER_OFF) { ret = i915_drm_suspend(dev); if (ret) return ret; } ret = i915_gem_freeze(kdev_to_i915(kdev)); if (ret) return ret; return 0; } static int i915_pm_freeze_late(struct device *kdev) { struct drm_device *dev = &kdev_to_i915(kdev)->drm; int ret; if (dev->switch_power_state != DRM_SWITCH_POWER_OFF) { ret = i915_drm_suspend_late(dev, true); if (ret) return ret; } ret = i915_gem_freeze_late(kdev_to_i915(kdev)); if (ret) return ret; return 0; } /* thaw: called after creating the hibernation image, but before turning off. */ static int i915_pm_thaw_early(struct device *kdev) { return i915_pm_resume_early(kdev); } static int i915_pm_thaw(struct device *kdev) { return i915_pm_resume(kdev); } /* restore: called after loading the hibernation image. */ static int i915_pm_restore_early(struct device *kdev) { return i915_pm_resume_early(kdev); } static int i915_pm_restore(struct device *kdev) { return i915_pm_resume(kdev); } /* * Save all Gunit registers that may be lost after a D3 and a subsequent * S0i[R123] transition. The list of registers needing a save/restore is * defined in the VLV2_S0IXRegs document. This documents marks all Gunit * registers in the following way: * - Driver: saved/restored by the driver * - Punit : saved/restored by the Punit firmware * - No, w/o marking: no need to save/restore, since the register is R/O or * used internally by the HW in a way that doesn't depend * keeping the content across a suspend/resume. * - Debug : used for debugging * * We save/restore all registers marked with 'Driver', with the following * exceptions: * - Registers out of use, including also registers marked with 'Debug'. * These have no effect on the driver's operation, so we don't save/restore * them to reduce the overhead. * - Registers that are fully setup by an initialization function called from * the resume path. For example many clock gating and RPS/RC6 registers. * - Registers that provide the right functionality with their reset defaults. * * TODO: Except for registers that based on the above 3 criteria can be safely * ignored, we save/restore all others, practically treating the HW context as * a black-box for the driver. Further investigation is needed to reduce the * saved/restored registers even further, by following the same 3 criteria. */ static void vlv_save_gunit_s0ix_state(struct drm_i915_private *dev_priv) { struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state; int i; /* GAM 0x4000-0x4770 */ s->wr_watermark = I915_READ(GEN7_WR_WATERMARK); s->gfx_prio_ctrl = I915_READ(GEN7_GFX_PRIO_CTRL); s->arb_mode = I915_READ(ARB_MODE); s->gfx_pend_tlb0 = I915_READ(GEN7_GFX_PEND_TLB0); s->gfx_pend_tlb1 = I915_READ(GEN7_GFX_PEND_TLB1); for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++) s->lra_limits[i] = I915_READ(GEN7_LRA_LIMITS(i)); s->media_max_req_count = I915_READ(GEN7_MEDIA_MAX_REQ_COUNT); s->gfx_max_req_count = I915_READ(GEN7_GFX_MAX_REQ_COUNT); s->render_hwsp = I915_READ(RENDER_HWS_PGA_GEN7); s->ecochk = I915_READ(GAM_ECOCHK); s->bsd_hwsp = I915_READ(BSD_HWS_PGA_GEN7); s->blt_hwsp = I915_READ(BLT_HWS_PGA_GEN7); s->tlb_rd_addr = I915_READ(GEN7_TLB_RD_ADDR); /* MBC 0x9024-0x91D0, 0x8500 */ s->g3dctl = I915_READ(VLV_G3DCTL); s->gsckgctl = I915_READ(VLV_GSCKGCTL); s->mbctl = I915_READ(GEN6_MBCTL); /* GCP 0x9400-0x9424, 0x8100-0x810C */ s->ucgctl1 = I915_READ(GEN6_UCGCTL1); s->ucgctl3 = I915_READ(GEN6_UCGCTL3); s->rcgctl1 = I915_READ(GEN6_RCGCTL1); s->rcgctl2 = I915_READ(GEN6_RCGCTL2); s->rstctl = I915_READ(GEN6_RSTCTL); s->misccpctl = I915_READ(GEN7_MISCCPCTL); /* GPM 0xA000-0xAA84, 0x8000-0x80FC */ s->gfxpause = I915_READ(GEN6_GFXPAUSE); s->rpdeuhwtc = I915_READ(GEN6_RPDEUHWTC); s->rpdeuc = I915_READ(GEN6_RPDEUC); s->ecobus = I915_READ(ECOBUS); s->pwrdwnupctl = I915_READ(VLV_PWRDWNUPCTL); s->rp_down_timeout = I915_READ(GEN6_RP_DOWN_TIMEOUT); s->rp_deucsw = I915_READ(GEN6_RPDEUCSW); s->rcubmabdtmr = I915_READ(GEN6_RCUBMABDTMR); s->rcedata = I915_READ(VLV_RCEDATA); s->spare2gh = I915_READ(VLV_SPAREG2H); /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */ s->gt_imr = I915_READ(GTIMR); s->gt_ier = I915_READ(GTIER); s->pm_imr = I915_READ(GEN6_PMIMR); s->pm_ier = I915_READ(GEN6_PMIER); for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++) s->gt_scratch[i] = I915_READ(GEN7_GT_SCRATCH(i)); /* GT SA CZ domain, 0x100000-0x138124 */ s->tilectl = I915_READ(TILECTL); s->gt_fifoctl = I915_READ(GTFIFOCTL); s->gtlc_wake_ctrl = I915_READ(VLV_GTLC_WAKE_CTRL); s->gtlc_survive = I915_READ(VLV_GTLC_SURVIVABILITY_REG); s->pmwgicz = I915_READ(VLV_PMWGICZ); /* Gunit-Display CZ domain, 0x182028-0x1821CF */ s->gu_ctl0 = I915_READ(VLV_GU_CTL0); s->gu_ctl1 = I915_READ(VLV_GU_CTL1); s->pcbr = I915_READ(VLV_PCBR); s->clock_gate_dis2 = I915_READ(VLV_GUNIT_CLOCK_GATE2); /* * Not saving any of: * DFT, 0x9800-0x9EC0 * SARB, 0xB000-0xB1FC * GAC, 0x5208-0x524C, 0x14000-0x14C000 * PCI CFG */ } static void vlv_restore_gunit_s0ix_state(struct drm_i915_private *dev_priv) { struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state; u32 val; int i; /* GAM 0x4000-0x4770 */ I915_WRITE(GEN7_WR_WATERMARK, s->wr_watermark); I915_WRITE(GEN7_GFX_PRIO_CTRL, s->gfx_prio_ctrl); I915_WRITE(ARB_MODE, s->arb_mode | (0xffff << 16)); I915_WRITE(GEN7_GFX_PEND_TLB0, s->gfx_pend_tlb0); I915_WRITE(GEN7_GFX_PEND_TLB1, s->gfx_pend_tlb1); for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++) I915_WRITE(GEN7_LRA_LIMITS(i), s->lra_limits[i]); I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT, s->media_max_req_count); I915_WRITE(GEN7_GFX_MAX_REQ_COUNT, s->gfx_max_req_count); I915_WRITE(RENDER_HWS_PGA_GEN7, s->render_hwsp); I915_WRITE(GAM_ECOCHK, s->ecochk); I915_WRITE(BSD_HWS_PGA_GEN7, s->bsd_hwsp); I915_WRITE(BLT_HWS_PGA_GEN7, s->blt_hwsp); I915_WRITE(GEN7_TLB_RD_ADDR, s->tlb_rd_addr); /* MBC 0x9024-0x91D0, 0x8500 */ I915_WRITE(VLV_G3DCTL, s->g3dctl); I915_WRITE(VLV_GSCKGCTL, s->gsckgctl); I915_WRITE(GEN6_MBCTL, s->mbctl); /* GCP 0x9400-0x9424, 0x8100-0x810C */ I915_WRITE(GEN6_UCGCTL1, s->ucgctl1); I915_WRITE(GEN6_UCGCTL3, s->ucgctl3); I915_WRITE(GEN6_RCGCTL1, s->rcgctl1); I915_WRITE(GEN6_RCGCTL2, s->rcgctl2); I915_WRITE(GEN6_RSTCTL, s->rstctl); I915_WRITE(GEN7_MISCCPCTL, s->misccpctl); /* GPM 0xA000-0xAA84, 0x8000-0x80FC */ I915_WRITE(GEN6_GFXPAUSE, s->gfxpause); I915_WRITE(GEN6_RPDEUHWTC, s->rpdeuhwtc); I915_WRITE(GEN6_RPDEUC, s->rpdeuc); I915_WRITE(ECOBUS, s->ecobus); I915_WRITE(VLV_PWRDWNUPCTL, s->pwrdwnupctl); I915_WRITE(GEN6_RP_DOWN_TIMEOUT,s->rp_down_timeout); I915_WRITE(GEN6_RPDEUCSW, s->rp_deucsw); I915_WRITE(GEN6_RCUBMABDTMR, s->rcubmabdtmr); I915_WRITE(VLV_RCEDATA, s->rcedata); I915_WRITE(VLV_SPAREG2H, s->spare2gh); /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */ I915_WRITE(GTIMR, s->gt_imr); I915_WRITE(GTIER, s->gt_ier); I915_WRITE(GEN6_PMIMR, s->pm_imr); I915_WRITE(GEN6_PMIER, s->pm_ier); for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++) I915_WRITE(GEN7_GT_SCRATCH(i), s->gt_scratch[i]); /* GT SA CZ domain, 0x100000-0x138124 */ I915_WRITE(TILECTL, s->tilectl); I915_WRITE(GTFIFOCTL, s->gt_fifoctl); /* * Preserve the GT allow wake and GFX force clock bit, they are not * be restored, as they are used to control the s0ix suspend/resume * sequence by the caller. */ val = I915_READ(VLV_GTLC_WAKE_CTRL); val &= VLV_GTLC_ALLOWWAKEREQ; val |= s->gtlc_wake_ctrl & ~VLV_GTLC_ALLOWWAKEREQ; I915_WRITE(VLV_GTLC_WAKE_CTRL, val); val = I915_READ(VLV_GTLC_SURVIVABILITY_REG); val &= VLV_GFX_CLK_FORCE_ON_BIT; val |= s->gtlc_survive & ~VLV_GFX_CLK_FORCE_ON_BIT; I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val); I915_WRITE(VLV_PMWGICZ, s->pmwgicz); /* Gunit-Display CZ domain, 0x182028-0x1821CF */ I915_WRITE(VLV_GU_CTL0, s->gu_ctl0); I915_WRITE(VLV_GU_CTL1, s->gu_ctl1); I915_WRITE(VLV_PCBR, s->pcbr); I915_WRITE(VLV_GUNIT_CLOCK_GATE2, s->clock_gate_dis2); } static int vlv_wait_for_pw_status(struct drm_i915_private *dev_priv, u32 mask, u32 val) { /* The HW does not like us polling for PW_STATUS frequently, so * use the sleeping loop rather than risk the busy spin within * intel_wait_for_register(). * * Transitioning between RC6 states should be at most 2ms (see * valleyview_enable_rps) so use a 3ms timeout. */ return wait_for((I915_READ_NOTRACE(VLV_GTLC_PW_STATUS) & mask) == val, 3); } int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on) { u32 val; int err; val = I915_READ(VLV_GTLC_SURVIVABILITY_REG); val &= ~VLV_GFX_CLK_FORCE_ON_BIT; if (force_on) val |= VLV_GFX_CLK_FORCE_ON_BIT; I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val); if (!force_on) return 0; err = intel_wait_for_register(dev_priv, VLV_GTLC_SURVIVABILITY_REG, VLV_GFX_CLK_STATUS_BIT, VLV_GFX_CLK_STATUS_BIT, 20); if (err) DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n", I915_READ(VLV_GTLC_SURVIVABILITY_REG)); return err; } static int vlv_allow_gt_wake(struct drm_i915_private *dev_priv, bool allow) { u32 mask; u32 val; int err; val = I915_READ(VLV_GTLC_WAKE_CTRL); val &= ~VLV_GTLC_ALLOWWAKEREQ; if (allow) val |= VLV_GTLC_ALLOWWAKEREQ; I915_WRITE(VLV_GTLC_WAKE_CTRL, val); POSTING_READ(VLV_GTLC_WAKE_CTRL); mask = VLV_GTLC_ALLOWWAKEACK; val = allow ? mask : 0; err = vlv_wait_for_pw_status(dev_priv, mask, val); if (err) DRM_ERROR("timeout disabling GT waking\n"); return err; } static void vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv, bool wait_for_on) { u32 mask; u32 val; mask = VLV_GTLC_PW_MEDIA_STATUS_MASK | VLV_GTLC_PW_RENDER_STATUS_MASK; val = wait_for_on ? mask : 0; /* * RC6 transitioning can be delayed up to 2 msec (see * valleyview_enable_rps), use 3 msec for safety. * * This can fail to turn off the rc6 if the GPU is stuck after a failed * reset and we are trying to force the machine to sleep. */ if (vlv_wait_for_pw_status(dev_priv, mask, val)) DRM_DEBUG_DRIVER("timeout waiting for GT wells to go %s\n", onoff(wait_for_on)); } static void vlv_check_no_gt_access(struct drm_i915_private *dev_priv) { if (!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEERR)) return; DRM_DEBUG_DRIVER("GT register access while GT waking disabled\n"); I915_WRITE(VLV_GTLC_PW_STATUS, VLV_GTLC_ALLOWWAKEERR); } static int vlv_suspend_complete(struct drm_i915_private *dev_priv) { u32 mask; int err; /* * Bspec defines the following GT well on flags as debug only, so * don't treat them as hard failures. */ vlv_wait_for_gt_wells(dev_priv, false); mask = VLV_GTLC_RENDER_CTX_EXISTS | VLV_GTLC_MEDIA_CTX_EXISTS; WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL) & mask) != mask); vlv_check_no_gt_access(dev_priv); err = vlv_force_gfx_clock(dev_priv, true); if (err) goto err1; err = vlv_allow_gt_wake(dev_priv, false); if (err) goto err2; if (!IS_CHERRYVIEW(dev_priv)) vlv_save_gunit_s0ix_state(dev_priv); err = vlv_force_gfx_clock(dev_priv, false); if (err) goto err2; return 0; err2: /* For safety always re-enable waking and disable gfx clock forcing */ vlv_allow_gt_wake(dev_priv, true); err1: vlv_force_gfx_clock(dev_priv, false); return err; } static int vlv_resume_prepare(struct drm_i915_private *dev_priv, bool rpm_resume) { int err; int ret; /* * If any of the steps fail just try to continue, that's the best we * can do at this point. Return the first error code (which will also * leave RPM permanently disabled). */ ret = vlv_force_gfx_clock(dev_priv, true); if (!IS_CHERRYVIEW(dev_priv)) vlv_restore_gunit_s0ix_state(dev_priv); err = vlv_allow_gt_wake(dev_priv, true); if (!ret) ret = err; err = vlv_force_gfx_clock(dev_priv, false); if (!ret) ret = err; vlv_check_no_gt_access(dev_priv); if (rpm_resume) intel_init_clock_gating(dev_priv); return ret; } static int intel_runtime_suspend(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); struct drm_device *dev = pci_get_drvdata(pdev); struct drm_i915_private *dev_priv = to_i915(dev); int ret; if (WARN_ON_ONCE(!(dev_priv->gt_pm.rc6.enabled && HAS_RC6(dev_priv)))) return -ENODEV; if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev_priv))) return -ENODEV; DRM_DEBUG_KMS("Suspending device\n"); disable_rpm_wakeref_asserts(dev_priv); /* * We are safe here against re-faults, since the fault handler takes * an RPM reference. */ i915_gem_runtime_suspend(dev_priv); intel_uc_suspend(dev_priv); intel_runtime_pm_disable_interrupts(dev_priv); intel_uncore_suspend(dev_priv); ret = 0; if (IS_GEN9_LP(dev_priv)) { bxt_display_core_uninit(dev_priv); bxt_enable_dc9(dev_priv); } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { hsw_enable_pc8(dev_priv); } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { ret = vlv_suspend_complete(dev_priv); } if (ret) { DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret); intel_uncore_runtime_resume(dev_priv); intel_runtime_pm_enable_interrupts(dev_priv); intel_uc_resume(dev_priv); i915_gem_init_swizzling(dev_priv); i915_gem_restore_fences(dev_priv); enable_rpm_wakeref_asserts(dev_priv); return ret; } enable_rpm_wakeref_asserts(dev_priv); WARN_ON_ONCE(atomic_read(&dev_priv->runtime_pm.wakeref_count)); if (intel_uncore_arm_unclaimed_mmio_detection(dev_priv)) DRM_ERROR("Unclaimed access detected prior to suspending\n"); dev_priv->runtime_pm.suspended = true; /* * FIXME: We really should find a document that references the arguments * used below! */ if (IS_BROADWELL(dev_priv)) { /* * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop * being detected, and the call we do at intel_runtime_resume() * won't be able to restore them. Since PCI_D3hot matches the * actual specification and appears to be working, use it. */ intel_opregion_notify_adapter(dev_priv, PCI_D3hot); } else { /* * current versions of firmware which depend on this opregion * notification have repurposed the D1 definition to mean * "runtime suspended" vs. what you would normally expect (D3) * to distinguish it from notifications that might be sent via * the suspend path. */ intel_opregion_notify_adapter(dev_priv, PCI_D1); } assert_forcewakes_inactive(dev_priv); if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) intel_hpd_poll_init(dev_priv); DRM_DEBUG_KMS("Device suspended\n"); return 0; } static int intel_runtime_resume(struct device *kdev) { struct pci_dev *pdev = to_pci_dev(kdev); struct drm_device *dev = pci_get_drvdata(pdev); struct drm_i915_private *dev_priv = to_i915(dev); int ret = 0; if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev_priv))) return -ENODEV; DRM_DEBUG_KMS("Resuming device\n"); WARN_ON_ONCE(atomic_read(&dev_priv->runtime_pm.wakeref_count)); disable_rpm_wakeref_asserts(dev_priv); intel_opregion_notify_adapter(dev_priv, PCI_D0); dev_priv->runtime_pm.suspended = false; if (intel_uncore_unclaimed_mmio(dev_priv)) DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n"); if (IS_GEN9_LP(dev_priv)) { bxt_disable_dc9(dev_priv); bxt_display_core_init(dev_priv, true); if (dev_priv->csr.dmc_payload && (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5)) gen9_enable_dc5(dev_priv); } else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) { hsw_disable_pc8(dev_priv); } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) { ret = vlv_resume_prepare(dev_priv, true); } intel_uncore_runtime_resume(dev_priv); intel_runtime_pm_enable_interrupts(dev_priv); intel_uc_resume(dev_priv); /* * No point of rolling back things in case of an error, as the best * we can do is to hope that things will still work (and disable RPM). */ i915_gem_init_swizzling(dev_priv); i915_gem_restore_fences(dev_priv); /* * On VLV/CHV display interrupts are part of the display * power well, so hpd is reinitialized from there. For * everyone else do it here. */ if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) intel_hpd_init(dev_priv); intel_enable_ipc(dev_priv); enable_rpm_wakeref_asserts(dev_priv); if (ret) DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret); else DRM_DEBUG_KMS("Device resumed\n"); return ret; } const struct dev_pm_ops i915_pm_ops = { /* * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND, * PMSG_RESUME] */ .prepare = i915_pm_prepare, .suspend = i915_pm_suspend, .suspend_late = i915_pm_suspend_late, .resume_early = i915_pm_resume_early, .resume = i915_pm_resume, /* * S4 event handlers * @freeze, @freeze_late : called (1) before creating the * hibernation image [PMSG_FREEZE] and * (2) after rebooting, before restoring * the image [PMSG_QUIESCE] * @thaw, @thaw_early : called (1) after creating the hibernation * image, before writing it [PMSG_THAW] * and (2) after failing to create or * restore the image [PMSG_RECOVER] * @poweroff, @poweroff_late: called after writing the hibernation * image, before rebooting [PMSG_HIBERNATE] * @restore, @restore_early : called after rebooting and restoring the * hibernation image [PMSG_RESTORE] */ .freeze = i915_pm_freeze, .freeze_late = i915_pm_freeze_late, .thaw_early = i915_pm_thaw_early, .thaw = i915_pm_thaw, .poweroff = i915_pm_suspend, .poweroff_late = i915_pm_poweroff_late, .restore_early = i915_pm_restore_early, .restore = i915_pm_restore, /* S0ix (via runtime suspend) event handlers */ .runtime_suspend = intel_runtime_suspend, .runtime_resume = intel_runtime_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, .compat_ioctl = i915_compat_ioctl, .llseek = noop_llseek, }; static int i915_gem_reject_pin_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { return -ENODEV; } static const struct drm_ioctl_desc i915_ioctls[] = { DRM_IOCTL_DEF_DRV(I915_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_FLUSH, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_FLIP, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_BATCHBUFFER, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, drm_noop, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_HWS_ADDR, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_INIT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER, i915_gem_execbuffer_ioctl, DRM_AUTH), DRM_IOCTL_DEF_DRV(I915_GEM_EXECBUFFER2_WR, i915_gem_execbuffer2_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_UNPIN, i915_gem_reject_pin_ioctl, DRM_AUTH|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_BUSY, i915_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SET_CACHING, i915_gem_set_caching_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_GET_CACHING, i915_gem_get_caching_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_THROTTLE, i915_gem_throttle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_ENTERVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_LEAVEVT, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY), DRM_IOCTL_DEF_DRV(I915_GEM_CREATE, i915_gem_create_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PREAD, i915_gem_pread_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_PWRITE, i915_gem_pwrite_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_MMAP, i915_gem_mmap_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_MMAP_GTT, i915_gem_mmap_gtt_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SET_DOMAIN, i915_gem_set_domain_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SW_FINISH, i915_gem_sw_finish_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_SET_TILING, i915_gem_set_tiling_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_GET_TILING, i915_gem_get_tiling_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_GET_APERTURE, i915_gem_get_aperture_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GET_PIPE_FROM_CRTC_ID, intel_get_pipe_from_crtc_id_ioctl, 0), DRM_IOCTL_DEF_DRV(I915_GEM_MADVISE, i915_gem_madvise_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_OVERLAY_PUT_IMAGE, intel_overlay_put_image_ioctl, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_OVERLAY_ATTRS, intel_overlay_attrs_ioctl, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY, intel_sprite_set_colorkey_ioctl, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER), DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE, i915_gem_context_create_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY, i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS, i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_USERPTR, i915_gem_userptr_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(I915_QUERY, i915_query_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW), }; 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_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME | DRIVER_RENDER | DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_SYNCOBJ, .release = i915_driver_release, .open = i915_driver_open, .lastclose = i915_driver_lastclose, .postclose = i915_driver_postclose, .gem_close_object = i915_gem_close_object, .gem_free_object_unlocked = 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, .ioctls = i915_ioctls, .num_ioctls = ARRAY_SIZE(i915_ioctls), .fops = &i915_driver_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, .patchlevel = DRIVER_PATCHLEVEL, }; #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #include "selftests/mock_drm.c" #endif
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