[PATCH 3/6] drm/i915: make dsm struct resource centric

[Matthew Auld <matthew.auld@intel.com>]

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>
---
 drivers/gpu/drm/i915/i915_drv.h        |  5 ++---
 drivers/gpu/drm/i915/i915_gem_stolen.c | 19 +++++++++++--------
 drivers/gpu/drm/i915/intel_fbc.c       |  4 ++--
 drivers/gpu/drm/i915/intel_pm.c        |  8 ++++----
 4 files changed, 19 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d575a56fc100..6136f92d5188 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1536,9 +1536,6 @@ struct i915_gem_mm {
 	 */
 	struct pagevec wc_stash;
 
-	/** Usable portion of the GTT for GEM */
-	dma_addr_t stolen_base; /* limited to low memory (32-bit) */
-
 	/**
 	 * tmpfs instance used for shmem backed objects
 	 */
@@ -2252,6 +2249,8 @@ struct drm_i915_private {
 
 	const struct intel_device_info info;
 
+	struct resource dsm;
+
 	void __iomem *regs;
 
 	struct intel_uncore uncore;
diff --git a/drivers/gpu/drm/i915/i915_gem_stolen.c b/drivers/gpu/drm/i915/i915_gem_stolen.c
index f1b8eeda0058..36c8ec04fd7a 100644
--- a/drivers/gpu/drm/i915/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/i915_gem_stolen.c
@@ -185,7 +185,7 @@ static void g4x_get_stolen_reserved(struct drm_i915_private *dev_priv,
 	uint32_t reg_val = I915_READ(IS_GM45(dev_priv) ?
 				     CTG_STOLEN_RESERVED :
 				     ELK_STOLEN_RESERVED);
-	dma_addr_t stolen_top = dev_priv->mm.stolen_base + ggtt->stolen_size;
+	dma_addr_t stolen_top = dev_priv->dsm.start + ggtt->stolen_size;
 
 	if ((reg_val & G4X_STOLEN_RESERVED_ENABLE) == 0) {
 		*base = 0;
@@ -316,7 +316,7 @@ static void bdw_get_stolen_reserved(struct drm_i915_private *dev_priv,
 		return;
 	}
 
-	stolen_top = dev_priv->mm.stolen_base + ggtt->stolen_size;
+	stolen_top = dev_priv->dsm.start + ggtt->stolen_size;
 
 	*base = reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK;
 
@@ -352,11 +352,14 @@ int i915_gem_init_stolen(struct drm_i915_private *dev_priv)
 	if (ggtt->stolen_size == 0)
 		return 0;
 
-	dev_priv->mm.stolen_base = i915_stolen_to_dma(dev_priv);
-	if (dev_priv->mm.stolen_base == 0)
+	dev_priv->dsm.start = i915_stolen_to_dma(dev_priv);
+	if (dev_priv->dsm.start == 0)
 		return 0;
 
-	stolen_top = dev_priv->mm.stolen_base + ggtt->stolen_size;
+	dev_priv->dsm.end = dev_priv->dsm.start + ggtt->stolen_size - 1;
+	dev_priv->dsm.flags = IORESOURCE_MEM;
+
+	stolen_top = dev_priv->dsm.end + 1;
 	reserved_base = 0;
 	reserved_size = 0;
 
@@ -397,12 +400,12 @@ int i915_gem_init_stolen(struct drm_i915_private *dev_priv)
 		reserved_base = stolen_top;
 	}
 
-	if (reserved_base < dev_priv->mm.stolen_base ||
+	if (reserved_base < dev_priv->dsm.start ||
 	    reserved_base + reserved_size > stolen_top) {
 		dma_addr_t reserved_top = reserved_base + reserved_size;
 		DRM_ERROR("Stolen reserved area [%pad - %pad] outside stolen memory [%pad - %pad]\n",
 			  &reserved_base, &reserved_top,
-			  &dev_priv->mm.stolen_base, &stolen_top);
+			  &dev_priv->dsm.start, &stolen_top);
 		return 0;
 	}
 
@@ -460,7 +463,7 @@ i915_pages_create_for_stolen(struct drm_device *dev,
 	sg->offset = 0;
 	sg->length = size;
 
-	sg_dma_address(sg) = (dma_addr_t)dev_priv->mm.stolen_base + offset;
+	sg_dma_address(sg) = (dma_addr_t)dev_priv->dsm.start + offset;
 	sg_dma_len(sg) = size;
 
 	return st;
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 4aefc658a5cf..374cfe8a33ad 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -616,9 +616,9 @@ static int intel_fbc_alloc_cfb(struct intel_crtc *crtc)
 		fbc->compressed_llb = compressed_llb;
 
 		I915_WRITE(FBC_CFB_BASE,
-			   dev_priv->mm.stolen_base + fbc->compressed_fb.start);
+			   dev_priv->dsm.start + fbc->compressed_fb.start);
 		I915_WRITE(FBC_LL_BASE,
-			   dev_priv->mm.stolen_base + compressed_llb->start);
+			   dev_priv->dsm.start + compressed_llb->start);
 	}
 
 	DRM_DEBUG_KMS("reserved %llu bytes of contiguous stolen space for FBC, threshold: %d\n",
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 7d41aad79166..4a326bbdac6c 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -7070,7 +7070,7 @@ static void valleyview_check_pctx(struct drm_i915_private *dev_priv)
 {
 	unsigned long pctx_addr = I915_READ(VLV_PCBR) & ~4095;
 
-	WARN_ON(pctx_addr != dev_priv->mm.stolen_base +
+	WARN_ON(pctx_addr != dev_priv->dsm.start +
 			     dev_priv->vlv_pctx->stolen->start);
 }
 
@@ -7093,7 +7093,7 @@ static void cherryview_setup_pctx(struct drm_i915_private *dev_priv)
 	pcbr = I915_READ(VLV_PCBR);
 	if ((pcbr >> VLV_PCBR_ADDR_SHIFT) == 0) {
 		DRM_DEBUG_DRIVER("BIOS didn't set up PCBR, fixing up\n");
-		paddr = (dev_priv->mm.stolen_base +
+		paddr = (dev_priv->dsm.start +
 			 (ggtt->stolen_size - pctx_size));
 
 		pctx_paddr = (paddr & (~4095));
@@ -7115,7 +7115,7 @@ static void valleyview_setup_pctx(struct drm_i915_private *dev_priv)
 		/* BIOS set it up already, grab the pre-alloc'd space */
 		int pcbr_offset;
 
-		pcbr_offset = (pcbr & (~4095)) - dev_priv->mm.stolen_base;
+		pcbr_offset = (pcbr & (~4095)) - dev_priv->dsm.start;
 		pctx = i915_gem_object_create_stolen_for_preallocated(dev_priv,
 								      pcbr_offset,
 								      I915_GTT_OFFSET_NONE,
@@ -7139,7 +7139,7 @@ static void valleyview_setup_pctx(struct drm_i915_private *dev_priv)
 		goto out;
 	}
 
-	pctx_paddr = dev_priv->mm.stolen_base + pctx->stolen->start;
+	pctx_paddr = dev_priv->dsm.start + pctx->stolen->start;
 	I915_WRITE(VLV_PCBR, pctx_paddr);
 
 out:
-- 
2.14.3

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