linux-kernel - [PATCH 1/3] drm/i915/gvt: Remove intel_gvt_ggtt

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Message-ID: <20241222002043.173080-2-linux@treblig.org>
Date: Sun, 22 Dec 2024 00:20:41 +0000
From: linux@...blig.org
To: zhenyuw@...ux.intel.com,
	zhi.wang.linux@...il.com,
	jani.nikula@...ux.intel.com,
	joonas.lahtinen@...ux.intel.com,
	rodrigo.vivi@...el.com,
	tursulin@...ulin.net,
	intel-gvt-dev@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org
Cc: airlied@...il.com,
	simona@...ll.ch,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH 1/3] drm/i915/gvt: Remove intel_gvt_ggtt_h2g<->index

From: "Dr. David Alan Gilbert" <linux@...blig.org>

intel_gvt_ggtt_h2g_index() and intel_gvt_ggtt_index_g2h() were
added in 2016 by
commit 2707e4446688 ("drm/i915/gvt: vGPU graphics memory virtualization")
but haven't been used.

Remove them.

They were the only users of intel_gvt_ggtt_gmadr_g2h() and
intel_gvt_ggtt_gmadr_h2g().

Remove them.

Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
 drivers/gpu/drm/i915/gvt/gtt.c | 66 ----------------------------------
 drivers/gpu/drm/i915/gvt/gvt.h |  6 ----
 2 files changed, 72 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 1bce1493b86f..464fb17e82ee 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -71,72 +71,6 @@ bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size)
 	return false;
 }
 
-/* translate a guest gmadr to host gmadr */
-int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu *vgpu, u64 g_addr, u64 *h_addr)
-{
-	struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
-
-	if (drm_WARN(&i915->drm, !vgpu_gmadr_is_valid(vgpu, g_addr),
-		     "invalid guest gmadr %llx\n", g_addr))
-		return -EACCES;
-
-	if (vgpu_gmadr_is_aperture(vgpu, g_addr))
-		*h_addr = vgpu_aperture_gmadr_base(vgpu)
-			  + (g_addr - vgpu_aperture_offset(vgpu));
-	else
-		*h_addr = vgpu_hidden_gmadr_base(vgpu)
-			  + (g_addr - vgpu_hidden_offset(vgpu));
-	return 0;
-}
-
-/* translate a host gmadr to guest gmadr */
-int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu *vgpu, u64 h_addr, u64 *g_addr)
-{
-	struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
-
-	if (drm_WARN(&i915->drm, !gvt_gmadr_is_valid(vgpu->gvt, h_addr),
-		     "invalid host gmadr %llx\n", h_addr))
-		return -EACCES;
-
-	if (gvt_gmadr_is_aperture(vgpu->gvt, h_addr))
-		*g_addr = vgpu_aperture_gmadr_base(vgpu)
-			+ (h_addr - gvt_aperture_gmadr_base(vgpu->gvt));
-	else
-		*g_addr = vgpu_hidden_gmadr_base(vgpu)
-			+ (h_addr - gvt_hidden_gmadr_base(vgpu->gvt));
-	return 0;
-}
-
-int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index,
-			     unsigned long *h_index)
-{
-	u64 h_addr;
-	int ret;
-
-	ret = intel_gvt_ggtt_gmadr_g2h(vgpu, g_index << I915_GTT_PAGE_SHIFT,
-				       &h_addr);
-	if (ret)
-		return ret;
-
-	*h_index = h_addr >> I915_GTT_PAGE_SHIFT;
-	return 0;
-}
-
-int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index,
-			     unsigned long *g_index)
-{
-	u64 g_addr;
-	int ret;
-
-	ret = intel_gvt_ggtt_gmadr_h2g(vgpu, h_index << I915_GTT_PAGE_SHIFT,
-				       &g_addr);
-	if (ret)
-		return ret;
-
-	*g_index = g_addr >> I915_GTT_PAGE_SHIFT;
-	return 0;
-}
-
 #define gtt_type_is_entry(type) \
 	(type > GTT_TYPE_INVALID && type < GTT_TYPE_PPGTT_ENTRY \
 	 && type != GTT_TYPE_PPGTT_PTE_ENTRY \
diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 2c95aeef4e41..8580c6d057e7 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -531,12 +531,6 @@ int intel_gvt_set_edid(struct intel_vgpu *vgpu, int port_num);
 	    gvt_gmadr_is_hidden(gvt, gmadr))
 
 bool intel_gvt_ggtt_validate_range(struct intel_vgpu *vgpu, u64 addr, u32 size);
-int intel_gvt_ggtt_gmadr_g2h(struct intel_vgpu *vgpu, u64 g_addr, u64 *h_addr);
-int intel_gvt_ggtt_gmadr_h2g(struct intel_vgpu *vgpu, u64 h_addr, u64 *g_addr);
-int intel_gvt_ggtt_index_g2h(struct intel_vgpu *vgpu, unsigned long g_index,
-			     unsigned long *h_index);
-int intel_gvt_ggtt_h2g_index(struct intel_vgpu *vgpu, unsigned long h_index,
-			     unsigned long *g_index);
 
 void intel_vgpu_init_cfg_space(struct intel_vgpu *vgpu,
 		bool primary);
-- 
2.47.1