Merge tag 'topic/drm-misc-2016-02-12' into drm-intel-next-queued
[cascardo/linux.git] / drivers / gpu / drm / i915 / i915_dma.c
index 1c3d254..2df2fac 100644 (file)
@@ -391,20 +391,13 @@ static int i915_load_modeset_init(struct drm_device *dev)
        if (ret)
                goto cleanup_vga_client;
 
-       /* Initialise stolen first so that we may reserve preallocated
-        * objects for the BIOS to KMS transition.
-        */
-       ret = i915_gem_init_stolen(dev);
-       if (ret)
-               goto cleanup_vga_switcheroo;
-
        intel_power_domains_init_hw(dev_priv, false);
 
        intel_csr_ucode_init(dev_priv);
 
        ret = intel_irq_install(dev_priv);
        if (ret)
-               goto cleanup_gem_stolen;
+               goto cleanup_csr;
 
        intel_setup_gmbus(dev);
 
@@ -451,16 +444,15 @@ static int i915_load_modeset_init(struct drm_device *dev)
 
 cleanup_gem:
        mutex_lock(&dev->struct_mutex);
-       i915_gem_cleanup_ringbuffer(dev);
        i915_gem_context_fini(dev);
+       i915_gem_cleanup_engines(dev);
        mutex_unlock(&dev->struct_mutex);
 cleanup_irq:
        intel_guc_ucode_fini(dev);
        drm_irq_uninstall(dev);
        intel_teardown_gmbus(dev);
-cleanup_gem_stolen:
-       i915_gem_cleanup_stolen(dev);
-cleanup_vga_switcheroo:
+cleanup_csr:
+       intel_csr_ucode_fini(dev_priv);
        vga_switcheroo_unregister_client(dev->pdev);
 cleanup_vga_client:
        vga_client_register(dev->pdev, NULL, NULL, NULL);
@@ -816,7 +808,41 @@ static void intel_device_info_runtime_init(struct drm_device *dev)
                     !(sfuse_strap & SFUSE_STRAP_FUSE_LOCK))) {
                        DRM_INFO("Display fused off, disabling\n");
                        info->num_pipes = 0;
+               } else if (fuse_strap & IVB_PIPE_C_DISABLE) {
+                       DRM_INFO("PipeC fused off\n");
+                       info->num_pipes -= 1;
                }
+       } else if (info->num_pipes > 0 && INTEL_INFO(dev)->gen == 9) {
+               u32 dfsm = I915_READ(SKL_DFSM);
+               u8 disabled_mask = 0;
+               bool invalid;
+               int num_bits;
+
+               if (dfsm & SKL_DFSM_PIPE_A_DISABLE)
+                       disabled_mask |= BIT(PIPE_A);
+               if (dfsm & SKL_DFSM_PIPE_B_DISABLE)
+                       disabled_mask |= BIT(PIPE_B);
+               if (dfsm & SKL_DFSM_PIPE_C_DISABLE)
+                       disabled_mask |= BIT(PIPE_C);
+
+               num_bits = hweight8(disabled_mask);
+
+               switch (disabled_mask) {
+               case BIT(PIPE_A):
+               case BIT(PIPE_B):
+               case BIT(PIPE_A) | BIT(PIPE_B):
+               case BIT(PIPE_A) | BIT(PIPE_C):
+                       invalid = true;
+                       break;
+               default:
+                       invalid = false;
+               }
+
+               if (num_bits > info->num_pipes || invalid)
+                       DRM_ERROR("invalid pipe fuse configuration: 0x%x\n",
+                                 disabled_mask);
+               else
+                       info->num_pipes -= num_bits;
        }
 
        /* Initialize slice/subslice/EU info */
@@ -855,6 +881,94 @@ static void intel_init_dpio(struct drm_i915_private *dev_priv)
        }
 }
 
+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_gem_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;
+
+       dev_priv->gpu_error.hangcheck_wq =
+               alloc_ordered_workqueue("i915-hangcheck", 0);
+       if (dev_priv->gpu_error.hangcheck_wq == NULL)
+               goto out_free_dp_wq;
+
+       return 0;
+
+out_free_dp_wq:
+       destroy_workqueue(dev_priv->hotplug.dp_wq);
+out_free_wq:
+       destroy_workqueue(dev_priv->wq);
+out_err:
+       DRM_ERROR("Failed to allocate workqueues.\n");
+
+       return -ENOMEM;
+}
+
+static void i915_workqueues_cleanup(struct drm_i915_private *dev_priv)
+{
+       destroy_workqueue(dev_priv->gpu_error.hangcheck_wq);
+       destroy_workqueue(dev_priv->hotplug.dp_wq);
+       destroy_workqueue(dev_priv->wq);
+}
+
+static int i915_mmio_setup(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = to_i915(dev);
+       int mmio_bar;
+       int mmio_size;
+
+       mmio_bar = IS_GEN2(dev) ? 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_INFO(dev)->gen < 5)
+               mmio_size = 512 * 1024;
+       else
+               mmio_size = 2 * 1024 * 1024;
+       dev_priv->regs = pci_iomap(dev->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);
+
+       return 0;
+}
+
+static void i915_mmio_cleanup(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = to_i915(dev);
+
+       intel_teardown_mchbar(dev);
+       pci_iounmap(dev->pdev, dev_priv->regs);
+}
+
 /**
  * i915_driver_load - setup chip and create an initial config
  * @dev: DRM device
@@ -870,7 +984,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 {
        struct drm_i915_private *dev_priv;
        struct intel_device_info *info, *device_info;
-       int ret = 0, mmio_bar, mmio_size;
+       int ret = 0;
        uint32_t aperture_size;
 
        info = (struct intel_device_info *) flags;
@@ -897,6 +1011,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
        mutex_init(&dev_priv->modeset_restore_lock);
        mutex_init(&dev_priv->av_mutex);
 
+       ret = i915_workqueues_init(dev_priv);
+       if (ret < 0)
+               goto out_free_priv;
+
        intel_pm_setup(dev);
 
        intel_runtime_pm_get(dev_priv);
@@ -915,28 +1033,12 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
        if (i915_get_bridge_dev(dev)) {
                ret = -EIO;
-               goto free_priv;
+               goto out_runtime_pm_put;
        }
 
-       mmio_bar = IS_GEN2(dev) ? 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 (info->gen < 5)
-               mmio_size = 512*1024;
-       else
-               mmio_size = 2*1024*1024;
-
-       dev_priv->regs = pci_iomap(dev->pdev, mmio_bar, mmio_size);
-       if (!dev_priv->regs) {
-               DRM_ERROR("failed to map registers\n");
-               ret = -EIO;
+       ret = i915_mmio_setup(dev);
+       if (ret < 0)
                goto put_bridge;
-       }
 
        /* This must be called before any calls to HAS_PCH_* */
        intel_detect_pch(dev);
@@ -945,7 +1047,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
        ret = i915_gem_gtt_init(dev);
        if (ret)
-               goto out_freecsr;
+               goto out_uncore_fini;
 
        /* WARNING: Apparently we must kick fbdev drivers before vgacon,
         * otherwise the vga fbdev driver falls over. */
@@ -991,49 +1093,13 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
        dev_priv->gtt.mtrr = arch_phys_wc_add(dev_priv->gtt.mappable_base,
                                              aperture_size);
 
-       /* 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_gem_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) {
-               DRM_ERROR("Failed to create our workqueue.\n");
-               ret = -ENOMEM;
-               goto out_mtrrfree;
-       }
-
-       dev_priv->hotplug.dp_wq = alloc_ordered_workqueue("i915-dp", 0);
-       if (dev_priv->hotplug.dp_wq == NULL) {
-               DRM_ERROR("Failed to create our dp workqueue.\n");
-               ret = -ENOMEM;
-               goto out_freewq;
-       }
-
-       dev_priv->gpu_error.hangcheck_wq =
-               alloc_ordered_workqueue("i915-hangcheck", 0);
-       if (dev_priv->gpu_error.hangcheck_wq == NULL) {
-               DRM_ERROR("Failed to create our hangcheck workqueue.\n");
-               ret = -ENOMEM;
-               goto out_freedpwq;
-       }
-
        intel_irq_init(dev_priv);
        intel_uncore_sanitize(dev);
 
-       /* Try to make sure MCHBAR is enabled before poking at it */
-       intel_setup_mchbar(dev);
        intel_opregion_setup(dev);
 
-       i915_gem_load(dev);
+       i915_gem_load_init(dev);
+       i915_gem_shrinker_init(dev_priv);
 
        /* On the 945G/GM, the chipset reports the MSI capability on the
         * integrated graphics even though the support isn't actually there
@@ -1046,8 +1112,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
         * be lost or delayed, but we use them anyways to avoid
         * stuck interrupts on some machines.
         */
-       if (!IS_I945G(dev) && !IS_I945GM(dev))
-               pci_enable_msi(dev->pdev);
+       if (!IS_I945G(dev) && !IS_I945GM(dev)) {
+               if (pci_enable_msi(dev->pdev) < 0)
+                       DRM_DEBUG_DRIVER("can't enable MSI");
+       }
 
        intel_device_info_runtime_init(dev);
 
@@ -1097,38 +1165,29 @@ out_power_well:
        intel_power_domains_fini(dev_priv);
        drm_vblank_cleanup(dev);
 out_gem_unload:
-       WARN_ON(unregister_oom_notifier(&dev_priv->mm.oom_notifier));
-       unregister_shrinker(&dev_priv->mm.shrinker);
+       i915_gem_shrinker_cleanup(dev_priv);
 
        if (dev->pdev->msi_enabled)
                pci_disable_msi(dev->pdev);
 
        intel_teardown_mchbar(dev);
        pm_qos_remove_request(&dev_priv->pm_qos);
-       destroy_workqueue(dev_priv->gpu_error.hangcheck_wq);
-out_freedpwq:
-       destroy_workqueue(dev_priv->hotplug.dp_wq);
-out_freewq:
-       destroy_workqueue(dev_priv->wq);
-out_mtrrfree:
        arch_phys_wc_del(dev_priv->gtt.mtrr);
        io_mapping_free(dev_priv->gtt.mappable);
 out_gtt:
        i915_global_gtt_cleanup(dev);
-out_freecsr:
-       intel_csr_ucode_fini(dev_priv);
+out_uncore_fini:
        intel_uncore_fini(dev);
-       pci_iounmap(dev->pdev, dev_priv->regs);
+       i915_mmio_cleanup(dev);
 put_bridge:
        pci_dev_put(dev_priv->bridge_dev);
-free_priv:
-       kmem_cache_destroy(dev_priv->requests);
-       kmem_cache_destroy(dev_priv->vmas);
-       kmem_cache_destroy(dev_priv->objects);
-
+       i915_gem_load_cleanup(dev);
+out_runtime_pm_put:
        intel_runtime_pm_put(dev_priv);
-
+       i915_workqueues_cleanup(dev_priv);
+out_free_priv:
        kfree(dev_priv);
+
        return ret;
 }
 
@@ -1153,8 +1212,7 @@ int i915_driver_unload(struct drm_device *dev)
 
        i915_teardown_sysfs(dev);
 
-       WARN_ON(unregister_oom_notifier(&dev_priv->mm.oom_notifier));
-       unregister_shrinker(&dev_priv->mm.shrinker);
+       i915_gem_shrinker_cleanup(dev_priv);
 
        io_mapping_free(dev_priv->gtt.mappable);
        arch_phys_wc_del(dev_priv->gtt.mtrr);
@@ -1182,6 +1240,8 @@ int i915_driver_unload(struct drm_device *dev)
        vga_switcheroo_unregister_client(dev->pdev);
        vga_client_register(dev->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_destroy_error_state(dev);
@@ -1196,31 +1256,21 @@ int i915_driver_unload(struct drm_device *dev)
 
        intel_guc_ucode_fini(dev);
        mutex_lock(&dev->struct_mutex);
-       i915_gem_cleanup_ringbuffer(dev);
        i915_gem_context_fini(dev);
+       i915_gem_cleanup_engines(dev);
        mutex_unlock(&dev->struct_mutex);
        intel_fbc_cleanup_cfb(dev_priv);
-       i915_gem_cleanup_stolen(dev);
 
-       intel_csr_ucode_fini(dev_priv);
-
-       intel_teardown_mchbar(dev);
-
-       destroy_workqueue(dev_priv->hotplug.dp_wq);
-       destroy_workqueue(dev_priv->wq);
-       destroy_workqueue(dev_priv->gpu_error.hangcheck_wq);
        pm_qos_remove_request(&dev_priv->pm_qos);
 
        i915_global_gtt_cleanup(dev);
 
        intel_uncore_fini(dev);
-       if (dev_priv->regs != NULL)
-               pci_iounmap(dev->pdev, dev_priv->regs);
+       i915_mmio_cleanup(dev);
 
-       kmem_cache_destroy(dev_priv->requests);
-       kmem_cache_destroy(dev_priv->vmas);
-       kmem_cache_destroy(dev_priv->objects);
+       i915_gem_load_cleanup(dev);
        pci_dev_put(dev_priv->bridge_dev);
+       i915_workqueues_cleanup(dev_priv);
        kfree(dev_priv);
 
        return 0;