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Commit 17a05345 authored by Matthew Auld's avatar Matthew Auld Committed by Joonas Lahtinen
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drm/i915: make reserved struct resource centric 



Now that we are using struct resource to track the stolen region, it is
more convenient if we track the reserved portion of that region in a
resource as well.

v2: s/<= end + 1/< end/ (Chris)
v3: prefer DEFINE_RES_MEM

Signed-off-by: default avatarMatthew 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: default avatarChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171211151822.20953-7-matthew.auld@intel.com
parent 77894226

drivers/gpu/drm/i915/i915_drv.h

+4 −0
Original line number Diff line number Diff line
@@ -2259,6 +2259,10 @@ struct drm_i915_private { 
	 * some portion of it is in fact reserved for use by hardware functions.

	 */

	struct resource dsm;

	/**

	 * Reseved portion of Data Stolen Memory

	 */

	struct resource dsm_reserved;



	void __iomem *regs;

drivers/gpu/drm/i915/i915_gem_gtt.h

+0 −2
Original line number Diff line number Diff line
@@ -382,8 +382,6 @@ struct i915_ggtt { 
	 * hardware functions and similarly removed from the accessible range.

	 */

	u32 stolen_usable_size;	/* Total size minus reserved ranges */

	u32 stolen_reserved_base;

	u32 stolen_reserved_size;



	/** "Graphics Stolen Memory" holds the global PTEs */

	void __iomem *gsm;

drivers/gpu/drm/i915/i915_gem_stolen.c

+6 −8
Original line number Diff line number Diff line
@@ -394,17 +394,15 @@ int i915_gem_init_stolen(struct drm_i915_private *dev_priv) 
		reserved_base = stolen_top;

	}



	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 %pR\n",

			  &reserved_base, &reserved_top, &dev_priv->dsm);

	dev_priv->dsm_reserved =

		(struct resource) DEFINE_RES_MEM(reserved_base, reserved_size);



	if (!resource_contains(&dev_priv->dsm, &dev_priv->dsm_reserved)) {

		DRM_ERROR("Stolen reserved area %pR outside stolen memory %pR\n",

			  &dev_priv->dsm_reserved, &dev_priv->dsm);

		return 0;

	}



	ggtt->stolen_reserved_base = reserved_base;

	ggtt->stolen_reserved_size = reserved_size;



	/* It is possible for the reserved area to end before the end of stolen

	 * memory, so just consider the start. */

	reserved_total = stolen_top - reserved_base;

drivers/gpu/drm/i915/intel_pm.c

+2 −4
Original line number Diff line number Diff line
@@ -6416,7 +6416,6 @@ static void valleyview_disable_rps(struct drm_i915_private *dev_priv) 


static bool bxt_check_bios_rc6_setup(struct drm_i915_private *dev_priv)

{

	struct i915_ggtt *ggtt = &dev_priv->ggtt;

	bool enable_rc6 = true;

	unsigned long rc6_ctx_base;

	u32 rc_ctl;
@@ -6441,9 +6440,8 @@ static bool bxt_check_bios_rc6_setup(struct drm_i915_private *dev_priv) 
	 * for this check.

	 */

	rc6_ctx_base = I915_READ(RC6_CTX_BASE) & RC6_CTX_BASE_MASK;

	if (!((rc6_ctx_base >= ggtt->stolen_reserved_base) &&

	      (rc6_ctx_base + PAGE_SIZE <= ggtt->stolen_reserved_base +

					ggtt->stolen_reserved_size))) {

	if (!((rc6_ctx_base >= dev_priv->dsm_reserved.start) &&

	      (rc6_ctx_base + PAGE_SIZE < dev_priv->dsm_reserved.end))) {

		DRM_DEBUG_DRIVER("RC6 Base address not as expected.\n");

		enable_rc6 = false;

	}