[3/6] drm/i915: Move out non-modeset calls from modeset init and cleanup

Submitted by Souza, Jose on July 16, 2018, 10:38 p.m.

Details

Message ID 20180716223841.5081-3-jose.souza@intel.com
State New
Headers show
Series "Series without cover letter" ( rev: 1 ) in DRI devel

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Commit Message

Souza, Jose July 16, 2018, 10:38 p.m.
i915_load_modeset_init() and intel_modeset_cleanup() was initializing
and cleaning up things that is not modeset only.
This will make easy initialize drive without display part.

Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c      | 56 ++++++++++++++++++----------
 drivers/gpu/drm/i915/i915_drv.h      |  1 +
 drivers/gpu/drm/i915/intel_display.c | 16 +++-----
 3 files changed, 42 insertions(+), 31 deletions(-)

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diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 99792039176f..402ed9b4f29e 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -665,25 +665,15 @@  static int i915_load_modeset_init(struct drm_device *dev)
 	/* 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;
+		goto cleanup_gmbus;
 
 	intel_setup_overlay(dev_priv);
 
@@ -692,23 +682,17 @@  static int i915_load_modeset_init(struct drm_device *dev)
 
 	ret = intel_fbdev_init(dev);
 	if (ret)
-		goto cleanup_gem;
+		goto cleanup_modeset;
 
 	/* 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);
+cleanup_gmbus:
 	intel_teardown_gmbus(dev_priv);
-cleanup_csr:
 	intel_csr_ucode_fini(dev_priv);
 	intel_power_domains_fini(dev_priv);
 	vga_switcheroo_unregister_client(pdev);
@@ -1395,9 +1379,22 @@  int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
 			goto out_cleanup_hw;
 	}
 
+	ret = intel_irq_install(dev_priv);
+	if (ret)
+		goto out_cleanup_hw;
+
+	/* i915_gem_init() call chain will call
+	 * intel_display_power_put(i915, POWER_DOMAIN_GT_IRQ);
+	 */
+	intel_power_domains_init_hw(dev_priv, false);
+
+	ret = i915_gem_init(dev_priv);
+	if (ret)
+		goto cleanup_irq;
+
 	ret = i915_load_modeset_init(&dev_priv->drm);
 	if (ret < 0)
-		goto out_cleanup_hw;
+		goto cleanup_gem;
 
 	i915_driver_register(dev_priv);
 
@@ -1411,6 +1408,12 @@  int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	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_irq:
+	drm_irq_uninstall(&dev_priv->drm);
 out_cleanup_hw:
 	i915_driver_cleanup_hw(dev_priv);
 out_cleanup_mmio:
@@ -1445,8 +1448,21 @@  void i915_driver_unload(struct drm_device *dev)
 
 	intel_gvt_cleanup(dev_priv);
 
+	intel_modeset_cleanup_prepare(dev);
+
+	intel_disable_gt_powersave(dev_priv);
+
+	/*
+	 * Interrupts and polling as the first thing to avoid creating havoc.
+	 * Too much stuff here (turning of connectors, ...) would
+	 * experience fancy races otherwise.
+	 */
+	intel_irq_uninstall(dev_priv);
+
 	intel_modeset_cleanup(dev);
 
+	intel_cleanup_gt_powersave(dev_priv);
+
 	intel_bios_cleanup(dev_priv);
 
 	vga_switcheroo_unregister_client(pdev);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 4fb937399440..51eb48f6b57a 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3419,6 +3419,7 @@  mkwrite_device_info(struct drm_i915_private *dev_priv)
 /* modesetting */
 extern void intel_modeset_init_hw(struct drm_device *dev);
 extern int intel_modeset_init(struct drm_device *dev);
+extern void intel_modeset_cleanup_prepare(struct drm_device *dev);
 extern void intel_modeset_cleanup(struct drm_device *dev);
 extern int intel_connector_register(struct drm_connector *);
 extern void intel_connector_unregister(struct drm_connector *);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bbf63741ae80..136fb8d51967 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -15905,7 +15905,7 @@  static void intel_hpd_poll_fini(struct drm_device *dev)
 	drm_connector_list_iter_end(&conn_iter);
 }
 
-void intel_modeset_cleanup(struct drm_device *dev)
+void intel_modeset_cleanup_prepare(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = to_i915(dev);
 
@@ -15913,15 +15913,11 @@  void intel_modeset_cleanup(struct drm_device *dev)
 
 	flush_work(&dev_priv->atomic_helper.free_work);
 	WARN_ON(!llist_empty(&dev_priv->atomic_helper.free_list));
+}
 
-	intel_disable_gt_powersave(dev_priv);
-
-	/*
-	 * Interrupts and polling as the first thing to avoid creating havoc.
-	 * Too much stuff here (turning of connectors, ...) would
-	 * experience fancy races otherwise.
-	 */
-	intel_irq_uninstall(dev_priv);
+void intel_modeset_cleanup(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = to_i915(dev);
 
 	/*
 	 * Due to the hpd irq storm handling the hotplug work can re-arm the
@@ -15943,8 +15939,6 @@  void intel_modeset_cleanup(struct drm_device *dev)
 
 	intel_cleanup_overlay(dev_priv);
 
-	intel_cleanup_gt_powersave(dev_priv);
-
 	intel_teardown_gmbus(dev_priv);
 
 	destroy_workqueue(dev_priv->modeset_wq);

Comments

Quoting José Roberto de Souza (2018-07-16 23:38:38)
> @@ -1395,9 +1379,22 @@ int i915_driver_load(struct pci_dev *pdev, const struct pci_device_id *ent)
>                         goto out_cleanup_hw;
>         }
>  
> +       ret = intel_irq_install(dev_priv);
> +       if (ret)
> +               goto out_cleanup_hw;
> +
> +       /* i915_gem_init() call chain will call
> +        * intel_display_power_put(i915, POWER_DOMAIN_GT_IRQ);
> +        */
> +       intel_power_domains_init_hw(dev_priv, false);
> +
> +       ret = i915_gem_init(dev_priv);
> +       if (ret)
> +               goto cleanup_irq;
> +
>         ret = i915_load_modeset_init(&dev_priv->drm);
>         if (ret < 0)
> -               goto out_cleanup_hw;
> +               goto cleanup_gem;

Bzzt. Order is extremely important. e.g. modeset init needs to reserve
portions of the GTT still in use by the BIOS before we wipe it.
-Chris