drm-misc-fixes for v5.3 (rc7?):

- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
 - Fix omap port lookup for SDI output
 - Use virtio_max_dma_size to fix an issue with swiotlb.
 - Compiler fixes to komeda.
 - Add missing of_node_get() call in komeda.
 - Reorder the komeda de-init functions.
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Merge tag 'drm-misc-fixes-2019-08-28' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

drm-misc-fixes for v5.3 (rc7?):
- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
- Fix omap port lookup for SDI output
- Use virtio_max_dma_size to fix an issue with swiotlb.
- Compiler fixes to komeda.
- Add missing of_node_get() call in komeda.
- Reorder the komeda de-init functions.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f187c28b-6279-2c4f-3e53-296ee899133b@linux.intel.com

drivers/gpu/drm/arm/display/komeda/komeda_dev.c

@@ -127,7 +127,7 @@ static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_node *np)
 	pipe->of_output_port =
 		of_graph_get_port_by_id(np, KOMEDA_OF_PORT_OUTPUT);
 
-	pipe->of_node = np;
+	pipe->of_node = of_node_get(np);
 
 	return 0;
 }

drivers/gpu/drm/arm/display/komeda/komeda_kms.c

@@ -14,8 +14,8 @@
 #include <drm/drm_gem_cma_helper.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_irq.h>
-#include <drm/drm_vblank.h>
 #include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
 
 #include "komeda_dev.h"
 #include "komeda_framebuffer.h"
@@ -147,7 +147,6 @@ static int komeda_crtc_normalize_zpos(struct drm_crtc *crtc,
 	struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(crtc_st);
 	struct komeda_plane_state *kplane_st;
 	struct drm_plane_state *plane_st;
-	struct drm_framebuffer *fb;
 	struct drm_plane *plane;
 	struct list_head zorder_list;
 	int order = 0, err;
@@ -173,7 +172,6 @@ static int komeda_crtc_normalize_zpos(struct drm_crtc *crtc,
 
 	list_for_each_entry(kplane_st, &zorder_list, zlist_node) {
 		plane_st = &kplane_st->base;
-		fb = plane_st->fb;
 		plane = plane_st->plane;
 
 		plane_st->normalized_zpos = order++;
@@ -206,7 +204,7 @@ static int komeda_kms_check(struct drm_device *dev,
 			    struct drm_atomic_state *state)
 {
 	struct drm_crtc *crtc;
-	struct drm_crtc_state *old_crtc_st, *new_crtc_st;
+	struct drm_crtc_state *new_crtc_st;
 	int i, err;
 
 	err = drm_atomic_helper_check_modeset(dev, state);
@@ -217,7 +215,7 @@ static int komeda_kms_check(struct drm_device *dev,
 	 * so need to add all affected_planes (even unchanged) to
 	 * drm_atomic_state.
 	 */
-	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_st, new_crtc_st, i) {
+	for_each_new_crtc_in_state(state, crtc, new_crtc_st, i) {
 		err = drm_atomic_add_affected_planes(state, crtc);
 		if (err)
 			return err;
@@ -308,11 +306,11 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
 			       komeda_kms_irq_handler, IRQF_SHARED,
 			       drm->driver->name, drm);
 	if (err)
-		goto cleanup_mode_config;
+		goto free_component_binding;
 
 	err = mdev->funcs->enable_irq(mdev);
 	if (err)
-		goto cleanup_mode_config;
+		goto free_component_binding;
 
 	drm->irq_enabled = true;
 
@@ -320,15 +318,21 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
 
 	err = drm_dev_register(drm, 0);
 	if (err)
-		goto cleanup_mode_config;
+		goto free_interrupts;
 
 	return kms;
 
-cleanup_mode_config:
+free_interrupts:
 	drm_kms_helper_poll_fini(drm);
 	drm->irq_enabled = false;
+	mdev->funcs->disable_irq(mdev);
+free_component_binding:
+	component_unbind_all(mdev->dev, drm);
+cleanup_mode_config:
 	drm_mode_config_cleanup(drm);
 	komeda_kms_cleanup_private_objs(kms);
+	drm->dev_private = NULL;
+	drm_dev_put(drm);
 free_kms:
 	kfree(kms);
 	return ERR_PTR(err);
@@ -339,13 +343,14 @@ void komeda_kms_detach(struct komeda_kms_dev *kms)
 	struct drm_device *drm = &kms->base;
 	struct komeda_dev *mdev = drm->dev_private;
 
-	drm->irq_enabled = false;
-	mdev->funcs->disable_irq(mdev);
 	drm_dev_unregister(drm);
 	drm_kms_helper_poll_fini(drm);
+	drm_atomic_helper_shutdown(drm);
+	drm->irq_enabled = false;
+	mdev->funcs->disable_irq(mdev);
 	component_unbind_all(mdev->dev, drm);
-	komeda_kms_cleanup_private_objs(kms);
 	drm_mode_config_cleanup(drm);
+	komeda_kms_cleanup_private_objs(kms);
 	drm->dev_private = NULL;
 	drm_dev_put(drm);
 }

drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h

@@ -480,6 +480,7 @@ void komeda_pipeline_dump_register(struct komeda_pipeline *pipe,
 				   struct seq_file *sf);
 
 /* component APIs */
+extern __printf(10, 11)
 struct komeda_component *
 komeda_component_add(struct komeda_pipeline *pipe,
 		     size_t comp_sz, u32 id, u32 hw_id,

drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c

@@ -148,7 +148,7 @@ static int komeda_wb_connector_add(struct komeda_kms_dev *kms,
 	if (!kcrtc->master->wb_layer)
 		return 0;
 
-	kwb_conn = kzalloc(sizeof(*wb_conn), GFP_KERNEL);
+	kwb_conn = kzalloc(sizeof(*kwb_conn), GFP_KERNEL);
 	if (!kwb_conn)
 		return -ENOMEM;
 

drivers/gpu/drm/omapdrm/dss/output.c

@@ -4,6 +4,7 @@
  * Author: Archit Taneja <archit@ti.com>
  */
 
+#include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
@@ -20,7 +21,8 @@ int omapdss_device_init_output(struct omap_dss_device *out)
 {
 	struct device_node *remote_node;
 
-	remote_node = of_graph_get_remote_node(out->dev->of_node, 0, 0);
+	remote_node = of_graph_get_remote_node(out->dev->of_node,
+					       ffs(out->of_ports) - 1, 0);
 	if (!remote_node) {
 		dev_dbg(out->dev, "failed to find video sink\n");
 		return 0;

drivers/gpu/drm/qxl/qxl_drv.c

@@ -59,6 +59,11 @@ module_param_named(num_heads, qxl_num_crtc, int, 0400);
 static struct drm_driver qxl_driver;
 static struct pci_driver qxl_pci_driver;
 
+static bool is_vga(struct pci_dev *pdev)
+{
+	return pdev->class == PCI_CLASS_DISPLAY_VGA << 8;
+}
+
 static int
 qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
@@ -83,9 +88,17 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto disable_pci;
 
+	if (is_vga(pdev)) {
+		ret = vga_get_interruptible(pdev, VGA_RSRC_LEGACY_IO);
+		if (ret) {
+			DRM_ERROR("can't get legacy vga ioports\n");
+			goto disable_pci;
+		}
+	}
+
 	ret = qxl_device_init(qdev, &qxl_driver, pdev);
 	if (ret)
-		goto disable_pci;
+		goto put_vga;
 
 	ret = qxl_modeset_init(qdev);
 	if (ret)
@@ -105,6 +118,9 @@ modeset_cleanup:
 	qxl_modeset_fini(qdev);
 unload:
 	qxl_device_fini(qdev);
+put_vga:
+	if (is_vga(pdev))
+		vga_put(pdev, VGA_RSRC_LEGACY_IO);
 disable_pci:
 	pci_disable_device(pdev);
 free_dev:
@@ -122,6 +138,8 @@ qxl_pci_remove(struct pci_dev *pdev)
 
 	qxl_modeset_fini(qdev);
 	qxl_device_fini(qdev);
+	if (is_vga(pdev))
+		vga_put(pdev, VGA_RSRC_LEGACY_IO);
 
 	dev->dev_private = NULL;
 	kfree(qdev);

drivers/gpu/drm/virtio/virtgpu_object.c

@@ -204,6 +204,7 @@ int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
 		.interruptible = false,
 		.no_wait_gpu = false
 	};
+	size_t max_segment;
 
 	/* wtf swapping */
 	if (bo->pages)
@@ -215,8 +216,13 @@ int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
 	if (!bo->pages)
 		goto out;
 
-	ret = sg_alloc_table_from_pages(bo->pages, pages, nr_pages, 0,
-					nr_pages << PAGE_SHIFT, GFP_KERNEL);
+	max_segment = virtio_max_dma_size(qdev->vdev);
+	max_segment &= PAGE_MASK;
+	if (max_segment > SCATTERLIST_MAX_SEGMENT)
+		max_segment = SCATTERLIST_MAX_SEGMENT;
+	ret = __sg_alloc_table_from_pages(bo->pages, pages, nr_pages, 0,
+					  nr_pages << PAGE_SHIFT,
+					  max_segment, GFP_KERNEL);
 	if (ret)
 		goto out;
 	return 0;