diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index bb7037c6c34744..60c0db10ae150d 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -92,11 +92,22 @@ static void write_vreg(struct intel_vgpu *vgpu, unsigned int offset,
 	memcpy(&vgpu_vreg(vgpu, offset), p_data, bytes);
 }
 
+static struct intel_gvt_mmio_info *find_mmio_info(struct intel_gvt *gvt,
+						  unsigned int offset)
+{
+	struct intel_gvt_mmio_info *e;
+
+	hash_for_each_possible(gvt->mmio.mmio_info_table, e, node, offset) {
+		if (e->offset == offset)
+			return e;
+	}
+	return NULL;
+}
+
 static int new_mmio_info(struct intel_gvt *gvt,
 		u32 offset, u32 flags, u32 size,
 		u32 addr_mask, u32 ro_mask, u32 device,
-		int (*read)(struct intel_vgpu *, unsigned int, void *, unsigned int),
-		int (*write)(struct intel_vgpu *, unsigned int, void *, unsigned int))
+		gvt_mmio_func read, gvt_mmio_func write)
 {
 	struct intel_gvt_mmio_info *info, *p;
 	u32 start, end, i;
@@ -116,7 +127,7 @@ static int new_mmio_info(struct intel_gvt *gvt,
 			return -ENOMEM;
 
 		info->offset = i;
-		p = intel_gvt_find_mmio_info(gvt, info->offset);
+		p = find_mmio_info(gvt, info->offset);
 		if (p)
 			gvt_err("dup mmio definition offset %x\n",
 				info->offset);
@@ -1794,10 +1805,6 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 	MMIO_D(SPRSCALE(PIPE_C), D_ALL);
 	MMIO_D(SPRSURFLIVE(PIPE_C), D_ALL);
 
-	MMIO_F(LGC_PALETTE(PIPE_A, 0), 4 * 256, 0, 0, 0, D_ALL, NULL, NULL);
-	MMIO_F(LGC_PALETTE(PIPE_B, 0), 4 * 256, 0, 0, 0, D_ALL, NULL, NULL);
-	MMIO_F(LGC_PALETTE(PIPE_C, 0), 4 * 256, 0, 0, 0, D_ALL, NULL, NULL);
-
 	MMIO_D(HTOTAL(TRANSCODER_A), D_ALL);
 	MMIO_D(HBLANK(TRANSCODER_A), D_ALL);
 	MMIO_D(HSYNC(TRANSCODER_A), D_ALL);
@@ -2245,11 +2252,8 @@ static int init_generic_mmio_info(struct intel_gvt *gvt)
 
 	MMIO_DH(GEN6_GDRST, D_ALL, NULL, gdrst_mmio_write);
 	MMIO_F(FENCE_REG_GEN6_LO(0), 0x80, 0, 0, 0, D_ALL, fence_mmio_read, fence_mmio_write);
-	MMIO_F(VGT_PVINFO_PAGE, VGT_PVINFO_SIZE, F_UNALIGN, 0, 0, D_ALL, pvinfo_mmio_read, pvinfo_mmio_write);
 	MMIO_DH(CPU_VGACNTRL, D_ALL, NULL, vga_control_mmio_write);
 
-	MMIO_F(MCHBAR_MIRROR_BASE_SNB, 0x40000, 0, 0, 0, D_ALL, NULL, NULL);
-
 	MMIO_D(TILECTL, D_ALL);
 
 	MMIO_D(GEN6_UCGCTL1, D_ALL);
@@ -2778,7 +2782,6 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
 	MMIO_D(0x72380, D_SKL_PLUS);
 	MMIO_D(0x7039c, D_SKL_PLUS);
 
-	MMIO_F(0x80000, 0x3000, 0, 0, 0, D_SKL_PLUS, NULL, NULL);
 	MMIO_D(0x8f074, D_SKL | D_KBL);
 	MMIO_D(0x8f004, D_SKL | D_KBL);
 	MMIO_D(0x8f034, D_SKL | D_KBL);
@@ -2852,26 +2855,36 @@ static int init_skl_mmio_info(struct intel_gvt *gvt)
 	return 0;
 }
 
-/**
- * intel_gvt_find_mmio_info - find MMIO information entry by aligned offset
- * @gvt: GVT device
- * @offset: register offset
- *
- * This function is used to find the MMIO information entry from hash table
- *
- * Returns:
- * pointer to MMIO information entry, NULL if not exists
- */
-struct intel_gvt_mmio_info *intel_gvt_find_mmio_info(struct intel_gvt *gvt,
-	unsigned int offset)
-{
-	struct intel_gvt_mmio_info *e;
+/* Special MMIO blocks. */
+static struct gvt_mmio_block {
+	unsigned int device;
+	i915_reg_t   offset;
+	unsigned int size;
+	gvt_mmio_func read;
+	gvt_mmio_func write;
+} gvt_mmio_blocks[] = {
+	{D_SKL_PLUS, _MMIO(CSR_MMIO_START_RANGE), 0x3000, NULL, NULL},
+	{D_ALL, _MMIO(MCHBAR_MIRROR_BASE_SNB), 0x40000, NULL, NULL},
+	{D_ALL, _MMIO(VGT_PVINFO_PAGE), VGT_PVINFO_SIZE,
+		pvinfo_mmio_read, pvinfo_mmio_write},
+	{D_ALL, LGC_PALETTE(PIPE_A, 0), 1024, NULL, NULL},
+	{D_ALL, LGC_PALETTE(PIPE_B, 0), 1024, NULL, NULL},
+	{D_ALL, LGC_PALETTE(PIPE_C, 0), 1024, NULL, NULL},
+};
 
-	WARN_ON(!IS_ALIGNED(offset, 4));
+static struct gvt_mmio_block *find_mmio_block(struct intel_gvt *gvt,
+					      unsigned int offset)
+{
+	unsigned long device = intel_gvt_get_device_type(gvt);
+	struct gvt_mmio_block *block = gvt_mmio_blocks;
+	int i;
 
-	hash_for_each_possible(gvt->mmio.mmio_info_table, e, node, offset) {
-		if (e->offset == offset)
-			return e;
+	for (i = 0; i < ARRAY_SIZE(gvt_mmio_blocks); i++, block++) {
+		if (!(device & block->device))
+			continue;
+		if (offset >= INTEL_GVT_MMIO_OFFSET(block->offset) &&
+		    offset < INTEL_GVT_MMIO_OFFSET(block->offset) + block->size)
+			return block;
 	}
 	return NULL;
 }
@@ -3056,3 +3069,94 @@ bool intel_gvt_in_force_nonpriv_whitelist(struct intel_gvt *gvt,
 {
 	return in_whitelist(offset);
 }
+
+/**
+ * intel_vgpu_mmio_reg_rw - emulate tracked mmio registers
+ * @vgpu: a vGPU
+ * @offset: register offset
+ * @pdata: data buffer
+ * @bytes: data length
+ *
+ * Returns:
+ * Zero on success, negative error code if failed.
+ */
+int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset,
+			   void *pdata, unsigned int bytes, bool is_read)
+{
+	struct intel_gvt *gvt = vgpu->gvt;
+	struct intel_gvt_mmio_info *mmio_info;
+	struct gvt_mmio_block *mmio_block;
+	gvt_mmio_func func;
+	int ret;
+
+	if (WARN_ON(bytes > 4))
+		return -EINVAL;
+
+	/*
+	 * Handle special MMIO blocks.
+	 */
+	mmio_block = find_mmio_block(gvt, offset);
+	if (mmio_block) {
+		func = is_read ? mmio_block->read : mmio_block->write;
+		if (func)
+			return func(vgpu, offset, pdata, bytes);
+		goto default_rw;
+	}
+
+	/*
+	 * Normal tracked MMIOs.
+	 */
+	mmio_info = find_mmio_info(gvt, offset);
+	if (!mmio_info) {
+		if (!vgpu->mmio.disable_warn_untrack)
+			gvt_vgpu_err("untracked MMIO %08x len %d\n",
+				     offset, bytes);
+		goto default_rw;
+	}
+
+	if (WARN_ON(bytes > mmio_info->size))
+		return -EINVAL;
+
+	if (is_read)
+		return mmio_info->read(vgpu, offset, pdata, bytes);
+	else {
+		u64 ro_mask = mmio_info->ro_mask;
+		u32 old_vreg = 0, old_sreg = 0;
+		u64 data = 0;
+
+		if (intel_gvt_mmio_has_mode_mask(gvt, mmio_info->offset)) {
+			old_vreg = vgpu_vreg(vgpu, offset);
+			old_sreg = vgpu_sreg(vgpu, offset);
+		}
+
+		if (likely(!ro_mask))
+			ret = mmio_info->write(vgpu, offset, pdata, bytes);
+		else if (!~ro_mask) {
+			gvt_vgpu_err("try to write RO reg %x\n", offset);
+			return 0;
+		} else {
+			/* keep the RO bits in the virtual register */
+			memcpy(&data, pdata, bytes);
+			data &= ~ro_mask;
+			data |= vgpu_vreg(vgpu, offset) & ro_mask;
+			ret = mmio_info->write(vgpu, offset, &data, bytes);
+		}
+
+		/* higher 16bits of mode ctl regs are mask bits for change */
+		if (intel_gvt_mmio_has_mode_mask(gvt, mmio_info->offset)) {
+			u32 mask = vgpu_vreg(vgpu, offset) >> 16;
+
+			vgpu_vreg(vgpu, offset) = (old_vreg & ~mask)
+					| (vgpu_vreg(vgpu, offset) & mask);
+			vgpu_sreg(vgpu, offset) = (old_sreg & ~mask)
+					| (vgpu_sreg(vgpu, offset) & mask);
+		}
+	}
+
+	return ret;
+
+default_rw:
+	return is_read ?
+		intel_vgpu_default_mmio_read(vgpu, offset, pdata, bytes) :
+		intel_vgpu_default_mmio_write(vgpu, offset, pdata, bytes);
+}
diff --git a/drivers/gpu/drm/i915/gvt/mmio.c b/drivers/gpu/drm/i915/gvt/mmio.c
index 35f6c4713cb615..322077fce2bb80 100644
--- a/drivers/gpu/drm/i915/gvt/mmio.c
+++ b/drivers/gpu/drm/i915/gvt/mmio.c
@@ -123,7 +123,6 @@ int intel_vgpu_emulate_mmio_read(struct intel_vgpu *vgpu, uint64_t pa,
 		void *p_data, unsigned int bytes)
 {
 	struct intel_gvt *gvt = vgpu->gvt;
-	struct intel_gvt_mmio_info *mmio;
 	unsigned int offset = 0;
 	int ret = -EINVAL;
 
@@ -187,25 +186,8 @@ int intel_vgpu_emulate_mmio_read(struct intel_vgpu *vgpu, uint64_t pa,
 			goto err;
 	}
 
-	mmio = intel_gvt_find_mmio_info(gvt, rounddown(offset, 4));
-	if (mmio) {
-		if (!intel_gvt_mmio_is_unalign(gvt, mmio->offset)) {
-			if (WARN_ON(offset + bytes > mmio->offset + mmio->size))
-				goto err;
-			if (WARN_ON(mmio->offset != offset))
-				goto err;
-		}
-		ret = mmio->read(vgpu, offset, p_data, bytes);
-	} else {
-		ret = intel_vgpu_default_mmio_read(vgpu, offset, p_data, bytes);
-
-		if (!vgpu->mmio.disable_warn_untrack) {
-			gvt_vgpu_err("read untracked MMIO %x(%dB) val %x\n",
-				offset, bytes, *(u32 *)p_data);
-		}
-	}
-
-	if (ret)
+	ret = intel_vgpu_mmio_reg_rw(vgpu, offset, p_data, bytes, true);
+	if (ret < 0)
 		goto err;
 
 	intel_gvt_mmio_set_accessed(gvt, offset);
@@ -232,9 +214,7 @@ int intel_vgpu_emulate_mmio_write(struct intel_vgpu *vgpu, uint64_t pa,
 		void *p_data, unsigned int bytes)
 {
 	struct intel_gvt *gvt = vgpu->gvt;
-	struct intel_gvt_mmio_info *mmio;
 	unsigned int offset = 0;
-	u32 old_vreg = 0, old_sreg = 0;
 	int ret = -EINVAL;
 
 	if (vgpu->failsafe) {
@@ -289,66 +269,10 @@ int intel_vgpu_emulate_mmio_write(struct intel_vgpu *vgpu, uint64_t pa,
 		return ret;
 	}
 
-	mmio = intel_gvt_find_mmio_info(gvt, rounddown(offset, 4));
-	if (!mmio && !vgpu->mmio.disable_warn_untrack)
-		gvt_dbg_mmio("vgpu%d: write untracked MMIO %x len %d val %x\n",
-				vgpu->id, offset, bytes, *(u32 *)p_data);
-
-	if (!intel_gvt_mmio_is_unalign(gvt, offset)) {
-		if (WARN_ON(!IS_ALIGNED(offset, bytes)))
-			goto err;
-	}
-
-	if (mmio) {
-		u64 ro_mask = mmio->ro_mask;
-
-		if (!intel_gvt_mmio_is_unalign(gvt, mmio->offset)) {
-			if (WARN_ON(offset + bytes > mmio->offset + mmio->size))
-				goto err;
-			if (WARN_ON(mmio->offset != offset))
-				goto err;
-		}
-
-		if (intel_gvt_mmio_has_mode_mask(gvt, mmio->offset)) {
-			old_vreg = vgpu_vreg(vgpu, offset);
-			old_sreg = vgpu_sreg(vgpu, offset);
-		}
-
-		if (!ro_mask) {
-			ret = mmio->write(vgpu, offset, p_data, bytes);
-		} else {
-			/* Protect RO bits like HW */
-			u64 data = 0;
-
-			/* all register bits are RO. */
-			if (ro_mask == ~(u64)0) {
-				gvt_vgpu_err("try to write RO reg %x\n",
-					offset);
-				ret = 0;
-				goto out;
-			}
-			/* keep the RO bits in the virtual register */
-			memcpy(&data, p_data, bytes);
-			data &= ~mmio->ro_mask;
-			data |= vgpu_vreg(vgpu, offset) & mmio->ro_mask;
-			ret = mmio->write(vgpu, offset, &data, bytes);
-		}
-
-		/* higher 16bits of mode ctl regs are mask bits for change */
-		if (intel_gvt_mmio_has_mode_mask(gvt, mmio->offset)) {
-			u32 mask = vgpu_vreg(vgpu, offset) >> 16;
-
-			vgpu_vreg(vgpu, offset) = (old_vreg & ~mask)
-				| (vgpu_vreg(vgpu, offset) & mask);
-			vgpu_sreg(vgpu, offset) = (old_sreg & ~mask)
-				| (vgpu_sreg(vgpu, offset) & mask);
-		}
-	} else
-		ret = intel_vgpu_default_mmio_write(vgpu, offset, p_data,
-				bytes);
-	if (ret)
+	ret = intel_vgpu_mmio_reg_rw(vgpu, offset, p_data, bytes, false);
+	if (ret < 0)
 		goto err;
-out:
+
 	intel_gvt_mmio_set_accessed(gvt, offset);
 	mutex_unlock(&gvt->lock);
 	return 0;
diff --git a/drivers/gpu/drm/i915/gvt/mmio.h b/drivers/gpu/drm/i915/gvt/mmio.h
index bd193f9bbcee2c..4410a323eea3b4 100644
--- a/drivers/gpu/drm/i915/gvt/mmio.h
+++ b/drivers/gpu/drm/i915/gvt/mmio.h
@@ -52,6 +52,9 @@ struct intel_vgpu;
 #define D_PRE_SKL	(D_BDW)
 #define D_ALL		(D_BDW | D_SKL | D_KBL)
 
+typedef int (*gvt_mmio_func)(struct intel_vgpu *, unsigned int, void *,
+			     unsigned int);
+
 struct intel_gvt_mmio_info {
 	u32 offset;
 	u32 size;
@@ -59,8 +62,8 @@ struct intel_gvt_mmio_info {
 	u32 addr_mask;
 	u64 ro_mask;
 	u32 device;
-	int (*read)(struct intel_vgpu *, unsigned int, void *, unsigned int);
-	int (*write)(struct intel_vgpu *, unsigned int, void *, unsigned int);
+	gvt_mmio_func read;
+	gvt_mmio_func write;
 	u32 addr_range;
 	struct hlist_node node;
 };
@@ -71,8 +74,6 @@ bool intel_gvt_match_device(struct intel_gvt *gvt, unsigned long device);
 int intel_gvt_setup_mmio_info(struct intel_gvt *gvt);
 void intel_gvt_clean_mmio_info(struct intel_gvt *gvt);
 
-struct intel_gvt_mmio_info *intel_gvt_find_mmio_info(struct intel_gvt *gvt,
-						     unsigned int offset);
 #define INTEL_GVT_MMIO_OFFSET(reg) ({ \
 	typeof(reg) __reg = reg; \
 	u32 *offset = (u32 *)&__reg; \
@@ -103,4 +104,8 @@ int intel_vgpu_default_mmio_write(struct intel_vgpu *vgpu, unsigned int offset,
 
 bool intel_gvt_in_force_nonpriv_whitelist(struct intel_gvt *gvt,
 					  unsigned int offset);
+
+int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset,
+			   void *pdata, unsigned int bytes, bool is_read);
+
 #endif