diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_gvt.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_gvt.c | 269 |
1 files changed, 227 insertions, 42 deletions
diff --git a/drivers/gpu/drm/i915/intel_gvt.c b/drivers/gpu/drm/i915/intel_gvt.c index 1d7d26e4cf14..e98b6d69a91a 100644 --- a/drivers/gpu/drm/i915/intel_gvt.c +++ b/drivers/gpu/drm/i915/intel_gvt.c @@ -22,7 +22,12 @@ */ #include "i915_drv.h" +#include "i915_vgpu.h" #include "intel_gvt.h" +#include "gem/i915_gem_dmabuf.h" +#include "gt/intel_context.h" +#include "gt/intel_ring.h" +#include "gt/shmem_utils.h" /** * DOC: Intel GVT-g host support @@ -39,6 +44,10 @@ * doc is available on https://01.org/group/2230/documentation-list. */ +static LIST_HEAD(intel_gvt_devices); +static const struct intel_vgpu_ops *intel_gvt_ops; +static DEFINE_MUTEX(intel_gvt_mutex); + static bool is_supported_device(struct drm_i915_private *dev_priv) { if (IS_BROADWELL(dev_priv)) @@ -51,35 +60,168 @@ static bool is_supported_device(struct drm_i915_private *dev_priv) return true; if (IS_COFFEELAKE(dev_priv)) return true; + if (IS_COMETLAKE(dev_priv)) + return true; return false; } -/** - * intel_gvt_sanitize_options - sanitize GVT related options - * @dev_priv: drm i915 private data - * - * This function is called at the i915 options sanitize stage. - */ -void intel_gvt_sanitize_options(struct drm_i915_private *dev_priv) +static void free_initial_hw_state(struct drm_i915_private *dev_priv) +{ + struct i915_virtual_gpu *vgpu = &dev_priv->vgpu; + + vfree(vgpu->initial_mmio); + vgpu->initial_mmio = NULL; + + kfree(vgpu->initial_cfg_space); + vgpu->initial_cfg_space = NULL; +} + +static void save_mmio(struct intel_gvt_mmio_table_iter *iter, u32 offset, + u32 size) { - if (!i915_modparams.enable_gvt) + struct drm_i915_private *dev_priv = iter->i915; + u32 *mmio, i; + + for (i = offset; i < offset + size; i += 4) { + mmio = iter->data + i; + *mmio = intel_uncore_read_notrace(to_gt(dev_priv)->uncore, + _MMIO(i)); + } +} + +static int handle_mmio(struct intel_gvt_mmio_table_iter *iter, + u32 offset, u32 size) +{ + if (WARN_ON(!IS_ALIGNED(offset, 4))) + return -EINVAL; + + save_mmio(iter, offset, size); + return 0; +} + +static int save_initial_hw_state(struct drm_i915_private *dev_priv) +{ + struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); + struct i915_virtual_gpu *vgpu = &dev_priv->vgpu; + struct intel_gvt_mmio_table_iter iter; + void *mem; + int i, ret; + + mem = kzalloc(PCI_CFG_SPACE_EXP_SIZE, GFP_KERNEL); + if (!mem) + return -ENOMEM; + + vgpu->initial_cfg_space = mem; + + for (i = 0; i < PCI_CFG_SPACE_EXP_SIZE; i += 4) + pci_read_config_dword(pdev, i, mem + i); + + mem = vzalloc(2 * SZ_1M); + if (!mem) { + ret = -ENOMEM; + goto err_mmio; + } + + vgpu->initial_mmio = mem; + + iter.i915 = dev_priv; + iter.data = vgpu->initial_mmio; + iter.handle_mmio_cb = handle_mmio; + + ret = intel_gvt_iterate_mmio_table(&iter); + if (ret) + goto err_iterate; + + return 0; + +err_iterate: + vfree(vgpu->initial_mmio); + vgpu->initial_mmio = NULL; +err_mmio: + kfree(vgpu->initial_cfg_space); + vgpu->initial_cfg_space = NULL; + + return ret; +} + +static void intel_gvt_init_device(struct drm_i915_private *dev_priv) +{ + if (!dev_priv->params.enable_gvt) { + drm_dbg(&dev_priv->drm, + "GVT-g is disabled by kernel params\n"); return; + } if (intel_vgpu_active(dev_priv)) { - DRM_INFO("GVT-g is disabled for guest\n"); - goto bail; + drm_info(&dev_priv->drm, "GVT-g is disabled for guest\n"); + return; } if (!is_supported_device(dev_priv)) { - DRM_INFO("Unsupported device. GVT-g is disabled\n"); - goto bail; + drm_info(&dev_priv->drm, + "Unsupported device. GVT-g is disabled\n"); + return; } - return; -bail: - i915_modparams.enable_gvt = 0; + if (intel_uc_wants_guc_submission(&to_gt(dev_priv)->uc)) { + drm_err(&dev_priv->drm, + "Graphics virtualization is not yet supported with GuC submission\n"); + return; + } + + if (save_initial_hw_state(dev_priv)) { + drm_dbg(&dev_priv->drm, "Failed to save initial HW state\n"); + return; + } + + if (intel_gvt_ops->init_device(dev_priv)) + drm_dbg(&dev_priv->drm, "Fail to init GVT device\n"); +} + +static void intel_gvt_clean_device(struct drm_i915_private *dev_priv) +{ + if (dev_priv->gvt) + intel_gvt_ops->clean_device(dev_priv); + free_initial_hw_state(dev_priv); +} + +int intel_gvt_set_ops(const struct intel_vgpu_ops *ops) +{ + struct drm_i915_private *dev_priv; + + mutex_lock(&intel_gvt_mutex); + if (intel_gvt_ops) { + mutex_unlock(&intel_gvt_mutex); + return -EINVAL; + } + intel_gvt_ops = ops; + + list_for_each_entry(dev_priv, &intel_gvt_devices, vgpu.entry) + intel_gvt_init_device(dev_priv); + mutex_unlock(&intel_gvt_mutex); + + return 0; +} +EXPORT_SYMBOL_NS_GPL(intel_gvt_set_ops, I915_GVT); + +void intel_gvt_clear_ops(const struct intel_vgpu_ops *ops) +{ + struct drm_i915_private *dev_priv; + + mutex_lock(&intel_gvt_mutex); + if (intel_gvt_ops != ops) { + mutex_unlock(&intel_gvt_mutex); + return; + } + + list_for_each_entry(dev_priv, &intel_gvt_devices, vgpu.entry) + intel_gvt_clean_device(dev_priv); + + intel_gvt_ops = NULL; + mutex_unlock(&intel_gvt_mutex); } +EXPORT_SYMBOL_NS_GPL(intel_gvt_clear_ops, I915_GVT); /** * intel_gvt_init - initialize GVT components @@ -93,45 +235,88 @@ bail: */ int intel_gvt_init(struct drm_i915_private *dev_priv) { - int ret; - - if (i915_inject_load_failure()) + if (i915_inject_probe_failure(dev_priv)) return -ENODEV; - if (!i915_modparams.enable_gvt) { - DRM_DEBUG_DRIVER("GVT-g is disabled by kernel params\n"); - return 0; - } - - if (USES_GUC_SUBMISSION(dev_priv)) { - DRM_ERROR("i915 GVT-g loading failed due to Graphics virtualization is not yet supported with GuC submission\n"); - return -EIO; - } - - ret = intel_gvt_init_device(dev_priv); - if (ret) { - DRM_DEBUG_DRIVER("Fail to init GVT device\n"); - goto bail; - } + mutex_lock(&intel_gvt_mutex); + list_add_tail(&dev_priv->vgpu.entry, &intel_gvt_devices); + if (intel_gvt_ops) + intel_gvt_init_device(dev_priv); + mutex_unlock(&intel_gvt_mutex); return 0; - -bail: - i915_modparams.enable_gvt = 0; - return 0; } /** - * intel_gvt_cleanup - cleanup GVT components when i915 driver is unloading + * intel_gvt_driver_remove - cleanup GVT components when i915 driver is + * unbinding * @dev_priv: drm i915 private * * * This function is called at the i915 driver unloading stage, to shutdown * GVT components and release the related resources. */ -void intel_gvt_cleanup(struct drm_i915_private *dev_priv) +void intel_gvt_driver_remove(struct drm_i915_private *dev_priv) { - if (!intel_gvt_active(dev_priv)) - return; - + mutex_lock(&intel_gvt_mutex); intel_gvt_clean_device(dev_priv); + list_del(&dev_priv->vgpu.entry); + mutex_unlock(&intel_gvt_mutex); } + +/** + * intel_gvt_resume - GVT resume routine wapper + * + * @dev_priv: drm i915 private * + * + * This function is called at the i915 driver resume stage to restore required + * HW status for GVT so that vGPU can continue running after resumed. + */ +void intel_gvt_resume(struct drm_i915_private *dev_priv) +{ + mutex_lock(&intel_gvt_mutex); + if (dev_priv->gvt) + intel_gvt_ops->pm_resume(dev_priv); + mutex_unlock(&intel_gvt_mutex); +} + +/* + * Exported here so that the exports only get created when GVT support is + * actually enabled. + */ +EXPORT_SYMBOL_NS_GPL(i915_gem_object_alloc, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_object_create_shmem, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_object_init, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_object_ggtt_pin_ww, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_object_pin_map, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_object_set_to_cpu_domain, I915_GVT); +EXPORT_SYMBOL_NS_GPL(__i915_gem_object_flush_map, I915_GVT); +EXPORT_SYMBOL_NS_GPL(__i915_gem_object_set_pages, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_gtt_insert, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_prime_export, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_ww_ctx_init, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_ww_ctx_backoff, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_gem_ww_ctx_fini, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_ppgtt_create, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_request_add, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_request_create, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_request_wait, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_reserve_fence, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_unreserve_fence, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_vm_release, I915_GVT); +EXPORT_SYMBOL_NS_GPL(_i915_vma_move_to_active, I915_GVT); +EXPORT_SYMBOL_NS_GPL(intel_context_create, I915_GVT); +EXPORT_SYMBOL_NS_GPL(__intel_context_do_pin, I915_GVT); +EXPORT_SYMBOL_NS_GPL(__intel_context_do_unpin, I915_GVT); +EXPORT_SYMBOL_NS_GPL(intel_ring_begin, I915_GVT); +EXPORT_SYMBOL_NS_GPL(intel_runtime_pm_get, I915_GVT); +#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM) +EXPORT_SYMBOL_NS_GPL(intel_runtime_pm_put, I915_GVT); +#endif +EXPORT_SYMBOL_NS_GPL(intel_runtime_pm_put_unchecked, I915_GVT); +EXPORT_SYMBOL_NS_GPL(intel_uncore_forcewake_for_reg, I915_GVT); +EXPORT_SYMBOL_NS_GPL(intel_uncore_forcewake_get, I915_GVT); +EXPORT_SYMBOL_NS_GPL(intel_uncore_forcewake_put, I915_GVT); +EXPORT_SYMBOL_NS_GPL(shmem_pin_map, I915_GVT); +EXPORT_SYMBOL_NS_GPL(shmem_unpin_map, I915_GVT); +EXPORT_SYMBOL_NS_GPL(__px_dma, I915_GVT); +EXPORT_SYMBOL_NS_GPL(i915_fence_ops, I915_GVT); |