--- /dev/null
+/*
+ *
+ * Copyright 2008 (c) Intel Corporation
+ * Jesse Barnes <jbarnes@virtuousgeek.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <drm/drmP.h>
+#include <drm/i915_drm.h>
+#include "intel_drv.h"
+#include "i915_reg.h"
+
+static void i915_save_display(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ /* Display arbitration control */
+ if (INTEL_INFO(dev)->gen <= 4)
+ dev_priv->regfile.saveDSPARB = I915_READ(DSPARB);
+
+ /* LVDS state */
+ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+ dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS);
+ else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
+ dev_priv->regfile.saveLVDS = I915_READ(LVDS);
+
+ /* Panel power sequencer */
+ if (HAS_PCH_SPLIT(dev)) {
+ dev_priv->regfile.savePP_CONTROL = I915_READ(PCH_PP_CONTROL);
+ dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PCH_PP_ON_DELAYS);
+ dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PCH_PP_OFF_DELAYS);
+ dev_priv->regfile.savePP_DIVISOR = I915_READ(PCH_PP_DIVISOR);
+ } else if (!IS_VALLEYVIEW(dev)) {
+ dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL);
+ dev_priv->regfile.savePP_ON_DELAYS = I915_READ(PP_ON_DELAYS);
+ dev_priv->regfile.savePP_OFF_DELAYS = I915_READ(PP_OFF_DELAYS);
+ dev_priv->regfile.savePP_DIVISOR = I915_READ(PP_DIVISOR);
+ }
+
+ /* save FBC interval */
+ if (HAS_FBC(dev) && INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev))
+ dev_priv->regfile.saveFBC_CONTROL = I915_READ(FBC_CONTROL);
+}
+
+static void i915_restore_display(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 mask = 0xffffffff;
+
+ /* Display arbitration */
+ if (INTEL_INFO(dev)->gen <= 4)
+ I915_WRITE(DSPARB, dev_priv->regfile.saveDSPARB);
+
+ mask = ~LVDS_PORT_EN;
+
+ /* LVDS state */
+ if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev))
+ I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS & mask);
+ else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev))
+ I915_WRITE(LVDS, dev_priv->regfile.saveLVDS & mask);
+
+ /* Panel power sequencer */
+ if (HAS_PCH_SPLIT(dev)) {
+ I915_WRITE(PCH_PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
+ I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
+ I915_WRITE(PCH_PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
+ I915_WRITE(PCH_PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
+ } else if (!IS_VALLEYVIEW(dev)) {
+ I915_WRITE(PP_ON_DELAYS, dev_priv->regfile.savePP_ON_DELAYS);
+ I915_WRITE(PP_OFF_DELAYS, dev_priv->regfile.savePP_OFF_DELAYS);
+ I915_WRITE(PP_DIVISOR, dev_priv->regfile.savePP_DIVISOR);
+ I915_WRITE(PP_CONTROL, dev_priv->regfile.savePP_CONTROL);
+ }
+
+ /* only restore FBC info on the platform that supports FBC*/
+ intel_fbc_disable(dev);
+
+ /* restore FBC interval */
+ if (HAS_FBC(dev) && INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev))
+ I915_WRITE(FBC_CONTROL, dev_priv->regfile.saveFBC_CONTROL);
+
+ i915_redisable_vga(dev);
+}
+
+int i915_save_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int i;
+
+ mutex_lock(&dev->struct_mutex);
+
+ i915_save_display(dev);
+
+ if (IS_GEN4(dev))
+ pci_read_config_word(dev->pdev, GCDGMBUS,
+ &dev_priv->regfile.saveGCDGMBUS);
+
+ /* Cache mode state */
+ if (INTEL_INFO(dev)->gen < 7)
+ dev_priv->regfile.saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
+
+ /* Memory Arbitration state */
+ dev_priv->regfile.saveMI_ARB_STATE = I915_READ(MI_ARB_STATE);
+
+ /* Scratch space */
+ for (i = 0; i < 16; i++) {
+ dev_priv->regfile.saveSWF0[i] = I915_READ(SWF00 + (i << 2));
+ dev_priv->regfile.saveSWF1[i] = I915_READ(SWF10 + (i << 2));
+ }
+ for (i = 0; i < 3; i++)
+ dev_priv->regfile.saveSWF2[i] = I915_READ(SWF30 + (i << 2));
+
+ mutex_unlock(&dev->struct_mutex);
+
+ return 0;
+}
+
+int i915_restore_state(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ int i;
+
+ mutex_lock(&dev->struct_mutex);
+
+ i915_gem_restore_fences(dev);
+
+ if (IS_GEN4(dev))
+ pci_write_config_word(dev->pdev, GCDGMBUS,
+ dev_priv->regfile.saveGCDGMBUS);
+ i915_restore_display(dev);
+
+ /* Cache mode state */
+ if (INTEL_INFO(dev)->gen < 7)
+ I915_WRITE(CACHE_MODE_0, dev_priv->regfile.saveCACHE_MODE_0 |
+ 0xffff0000);
+
+ /* Memory arbitration state */
+ I915_WRITE(MI_ARB_STATE, dev_priv->regfile.saveMI_ARB_STATE | 0xffff0000);
+
+ for (i = 0; i < 16; i++) {
+ I915_WRITE(SWF00 + (i << 2), dev_priv->regfile.saveSWF0[i]);
+ I915_WRITE(SWF10 + (i << 2), dev_priv->regfile.saveSWF1[i]);
+ }
+ for (i = 0; i < 3; i++)
+ I915_WRITE(SWF30 + (i << 2), dev_priv->regfile.saveSWF2[i]);
+
+ mutex_unlock(&dev->struct_mutex);
+
+ intel_i2c_reset(dev);
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff