fbdev: allow passing more than one aperture for handoff

It removes a hack from nouveau code which had to detect which
region to pass to kick vesafb/efifb.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Peter Jones <pjones@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 48 insertions, 66 deletions

diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index b04e0a8..7f1eabb 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -128,11 +128,16 @@ static int intelfb_create(struct intel_fbdev *ifbdev,
 	info->fbops = &intelfb_ops;
 
 	/* setup aperture base/size for vesafb takeover */
-	info->aperture_base = dev->mode_config.fb_base;
+	info->apertures = alloc_apertures(1);
+	if (!info->apertures) {
+		ret = -ENOMEM;
+		goto out_unpin;
+	}
+	info->apertures->ranges[0].base = dev->mode_config.fb_base;
 	if (IS_I9XX(dev))
-		info->aperture_size = pci_resource_len(dev->pdev, 2);
+		info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 2);
 	else
-		info->aperture_size = pci_resource_len(dev->pdev, 0);
+		info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
 
 	info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
 	info->fix.smem_len = size;
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index f29fa8c..292c7ff 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -152,44 +152,6 @@ static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
 	*blue = nv_crtc->lut.b[regno];
 }
 
-#if defined(__i386__) || defined(__x86_64__)
-static bool
-nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
-{
-	struct pci_dev *pdev = dev->pdev;
-	int ramin;
-
-	if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
-	    screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
-		return false;
-
-	if (screen_info.lfb_base < pci_resource_start(pdev, 1))
-		goto not_fb;
-
-	if (screen_info.lfb_base + screen_info.lfb_size >=
-	    pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
-		goto not_fb;
-
-	return true;
-not_fb:
-	ramin = 2;
-	if (pci_resource_len(pdev, ramin) == 0) {
-		ramin = 3;
-		if (pci_resource_len(pdev, ramin) == 0)
-			return false;
-	}
-
-	if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
-		return false;
-
-	if (screen_info.lfb_base + screen_info.lfb_size >=
-	    pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
-		return false;
-
-	return true;
-}
-#endif
-
 static void
 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
 {
@@ -219,7 +181,9 @@ nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
 	struct nouveau_framebuffer *nouveau_fb;
 	struct nouveau_bo *nvbo;
 	struct drm_mode_fb_cmd mode_cmd;
-	struct device *device = &dev->pdev->dev;
+	struct pci_dev *pdev = dev->pdev;
+	struct device *device = &pdev->dev;
+	struct apertures_struct *aper;
 	int size, ret;
 
 	mode_cmd.width = sizes->surface_width;
@@ -299,28 +263,30 @@ nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
 	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
 
 	/* FIXME: we really shouldn't expose mmio space at all */
-	info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
-	info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
+	info->fix.mmio_start = pci_resource_start(pdev, 1);
+	info->fix.mmio_len = pci_resource_len(pdev, 1);
 
 	/* Set aperture base/size for vesafb takeover */
-#if defined(__i386__) || defined(__x86_64__)
-	if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
-		/* Some NVIDIA VBIOS' are stupid and decide to put the
-		 * framebuffer in the middle of the PRAMIN BAR for
-		 * whatever reason.  We need to know the exact lfb_base
-		 * to get vesafb kicked off, and the only reliable way
-		 * we have left is to find out lfb_base the same way
-		 * vesafb did.
-		 */
-		info->aperture_base = screen_info.lfb_base;
-		info->aperture_size = screen_info.lfb_size;
-		if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
-			info->aperture_size *= 65536;
-	} else
-#endif
-	{
-		info->aperture_base = info->fix.mmio_start;
-		info->aperture_size = info->fix.mmio_len;
+	aper = info->apertures = alloc_apertures(3);
+	if (!info->apertures) {
+		ret = -ENOMEM;
+		goto out_unref;
+	}
+
+	aper->ranges[0].base = pci_resource_start(pdev, 1);
+	aper->ranges[0].size = pci_resource_len(pdev, 1);
+	aper->count = 1;
+
+	if (pci_resource_len(pdev, 2)) {
+		aper->ranges[aper->count].base = pci_resource_start(pdev, 2);
+		aper->ranges[aper->count].size = pci_resource_len(pdev, 2);
+		aper->count++;
+	}
+
+	if (pci_resource_len(pdev, 3)) {
+		aper->ranges[aper->count].base = pci_resource_start(pdev, 3);
+		aper->ranges[aper->count].size = pci_resource_len(pdev, 3);
+		aper->count++;
 	}
 
 	info->pixmap.size = 64*1024;
diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index fcb5b52..b494802 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -236,8 +236,13 @@ static int radeonfb_create(struct radeon_fbdev *rfbdev,
 	drm_fb_helper_fill_var(info, &rfbdev->helper, sizes->fb_width, sizes->fb_height);
 
 	/* setup aperture base/size for vesafb takeover */
-	info->aperture_base = rdev->ddev->mode_config.fb_base;
-	info->aperture_size = rdev->mc.real_vram_size;
+	info->apertures = alloc_apertures(1);
+	if (!info->apertures) {
+		ret = -ENOMEM;
+		goto out_unref;
+	}
+	info->apertures->ranges[0].base = rdev->ddev->mode_config.fb_base;
+	info->apertures->ranges[0].size = rdev->mc.real_vram_size;
 
 	info->fix.mmio_start = 0;
 	info->fix.mmio_len = 0;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
index 80125ff..7421aaa 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -559,8 +559,13 @@ int vmw_fb_init(struct vmw_private *vmw_priv)
 	info->pixmap.scan_align = 1;
 #endif
 
-	info->aperture_base = vmw_priv->vram_start;
-	info->aperture_size = vmw_priv->vram_size;
+	info->apertures = alloc_apertures(1);
+	if (!info->apertures) {
+		ret = -ENOMEM;
+		goto err_aper;
+	}
+	info->apertures->ranges[0].base = vmw_priv->vram_start;
+	info->apertures->ranges[0].size = vmw_priv->vram_size;
 
 	/*
 	 * Dirty & Deferred IO
@@ -580,6 +585,7 @@ int vmw_fb_init(struct vmw_private *vmw_priv)
 
 err_defio:
 	fb_deferred_io_cleanup(info);
+err_aper:
 	ttm_bo_kunmap(&par->map);
 err_unref:
 	ttm_bo_unref((struct ttm_buffer_object **)&par->vmw_bo);