From b1ace60107e65b915a59b113f2aaeed8587f34fd Mon Sep 17 00:00:00 2001
From: Matthew Auld <matthew.auld@intel.com>
Date: Mon, 11 Dec 2017 15:18:21 +0000
Subject: [PATCH] drm/i915: give stolen_usable_size a more suitable home
Git-commit: b1ace60107e65b915a59b113f2aaeed8587f34fd
Patch-mainline: v4.16-rc1
References: FATE#322643 bsc#1055900

Kick it out of i915_ggtt and keep it grouped with dsm and dsm_reserved,
where it makes the most sense.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171211151822.20953-9-matthew.auld@intel.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/i915/i915_drv.h        |   13 ++++++++++++-
 drivers/gpu/drm/i915/i915_gem_gtt.h    |   10 ----------
 drivers/gpu/drm/i915/i915_gem_stolen.c |    5 ++---
 drivers/gpu/drm/i915/intel_display.c   |    3 +--
 drivers/gpu/drm/i915/intel_fbdev.c     |    3 +--
 5 files changed, 16 insertions(+), 18 deletions(-)

--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2254,7 +2254,7 @@ struct drm_i915_private {
 	/**
 	 * Data Stolen Memory - aka "i915 stolen memory" gives us the start and
 	 * end of stolen which we can optionally use to create GEM objects
-	 * backed by stolen memory. Note that ggtt->stolen_usable_size tells us
+	 * backed by stolen memory. Note that stolen_usable_size tells us
 	 * exactly how much of this we are actually allowed to use, given that
 	 * some portion of it is in fact reserved for use by hardware functions.
 	 */
@@ -2264,6 +2264,17 @@ struct drm_i915_private {
 	 */
 	struct resource dsm_reserved;
 
+	/*
+	 * Stolen memory is segmented in hardware with different portions
+	 * offlimits to certain functions.
+	 *
+	 * The drm_mm is initialised to the total accessible range, as found
+	 * from the PCI config. On Broadwell+, this is further restricted to
+	 * avoid the first page! The upper end of stolen memory is reserved for
+	 * hardware functions and similarly removed from the accessible range.
+	 */
+	u32 stolen_usable_size;	/* Total size minus reserved ranges */
+
 	void __iomem *regs;
 
 	struct intel_uncore uncore;
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -373,16 +373,6 @@ struct i915_ggtt {
 	struct resource gmadr;          /* GMADR resource */
 	u64 mappable_end;		/* End offset that we can CPU map */
 
-	/* Stolen memory is segmented in hardware with different portions
-	 * offlimits to certain functions.
-	 *
-	 * The drm_mm is initialised to the total accessible range, as found
-	 * from the PCI config. On Broadwell+, this is further restricted to
-	 * avoid the first page! The upper end of stolen memory is reserved for
-	 * hardware functions and similarly removed from the accessible range.
-	 */
-	u32 stolen_usable_size;	/* Total size minus reserved ranges */
-
 	/** "Graphics Stolen Memory" holds the global PTEs */
 	void __iomem *gsm;
 	void (*invalidate)(struct drm_i915_private *dev_priv);
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -325,7 +325,6 @@ static void bdw_get_stolen_reserved(stru
 
 int i915_gem_init_stolen(struct drm_i915_private *dev_priv)
 {
-	struct i915_ggtt *ggtt = &dev_priv->ggtt;
 	dma_addr_t reserved_base, stolen_top;
 	u32 reserved_total, reserved_size;
 	u32 stolen_usable_start;
@@ -416,12 +415,12 @@ int i915_gem_init_stolen(struct drm_i915
 	if (INTEL_GEN(dev_priv) >= 8)
 		stolen_usable_start = 4096;
 
-	ggtt->stolen_usable_size =
+	dev_priv->stolen_usable_size =
 		resource_size(&dev_priv->dsm) - reserved_total - stolen_usable_start;
 
 	/* Basic memrange allocator for stolen space. */
 	drm_mm_init(&dev_priv->mm.stolen, stolen_usable_start,
-		    ggtt->stolen_usable_size);
+		    dev_priv->stolen_usable_size);
 
 	return 0;
 }
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2639,7 +2639,6 @@ intel_alloc_initial_plane_obj(struct int
 {
 	struct drm_device *dev = crtc->base.dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct i915_ggtt *ggtt = &dev_priv->ggtt;
 	struct drm_i915_gem_object *obj = NULL;
 	struct drm_mode_fb_cmd2 mode_cmd = { 0 };
 	struct drm_framebuffer *fb = &plane_config->fb->base;
@@ -2655,7 +2654,7 @@ intel_alloc_initial_plane_obj(struct int
 	/* If the FB is too big, just don't use it since fbdev is not very
 	 * important and we should probably use that space with FBC or other
 	 * features. */
-	if (size_aligned * 2 > ggtt->stolen_usable_size)
+	if (size_aligned * 2 > dev_priv->stolen_usable_size)
 		return false;
 
 	mutex_lock(&dev->struct_mutex);
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -115,7 +115,6 @@ static int intelfb_alloc(struct drm_fb_h
 	struct drm_framebuffer *fb;
 	struct drm_device *dev = helper->dev;
 	struct drm_i915_private *dev_priv = to_i915(dev);
-	struct i915_ggtt *ggtt = &dev_priv->ggtt;
 	struct drm_mode_fb_cmd2 mode_cmd = {};
 	struct drm_i915_gem_object *obj;
 	int size, ret;
@@ -139,7 +138,7 @@ static int intelfb_alloc(struct drm_fb_h
 	 * important and we should probably use that space with FBC or other
 	 * features. */
 	obj = NULL;
-	if (size * 2 < ggtt->stolen_usable_size)
+	if (size * 2 < dev_priv->stolen_usable_size)
 		obj = i915_gem_object_create_stolen(dev_priv, size);
 	if (obj == NULL)
 		obj = i915_gem_object_create(dev_priv, size);