===================================================================
@@ -400,11 +400,21 @@ static int i915_load_modeset_init(struct
* If we are a secondary display controller (!PCI_DISPLAY_CLASS_VGA),
* then we do not take part in VGA arbitration and the
* vga_client_register() fails with -ENODEV.
+ *
+ * NB. The set_decode callback here actually only works on GMCH
+ * devices, on newer HD devices we can only disable VGA MMIO space.
+ * Disabling VGA I/O space requires disabling I/O in the PCI command
+ * register. Nonetheless, we like to pretend that we participate in
+ * VGA arbitration and can dynamically disable VGA I/O space because
+ * this makes X happy, even though it's a complete lie.
*/
- ret = vga_client_register(dev->pdev, dev, NULL, i915_vga_set_decode);
- if (ret && ret != -ENODEV)
- goto out;
-
+ if (!i915.enable_hd_vgaarb || !HAS_PCH_SPLIT(dev)) {
+ ret = vga_client_register(dev->pdev, dev, NULL,
+ i915_vga_set_decode);
+ if (ret && ret != -ENODEV)
+ goto out;
+ }
+
intel_register_dsm_handler();
ret = vga_switcheroo_register_client(dev->pdev, &i915_switcheroo_ops, false);
@@ -440,6 +450,7 @@ static int i915_load_modeset_init(struct
if (INTEL_INFO(dev)->num_pipes == 0)
return 0;
+ printk("---monkey---ret = intel_fbdev_init(dev);");
ret = intel_fbdev_init(dev);
if (ret)
goto cleanup_gem;
@@ -457,8 +468,17 @@ static int i915_load_modeset_init(struct
* scanning against hotplug events. Hence do this first and ignore the
* tiny window where we will loose hotplug notifactions.
*/
- async_schedule(intel_fbdev_initial_config, dev_priv);
+ //async_schedule(intel_fbdev_initial_config, dev_priv);
+ intel_fbdev_initial_config(dev_priv,0);
+ /*
+ * Must do this after fbcon init so that
+ * vgacon_save_screen() works during the handover.
+ */
+ printk("---monkey---begin--i915_disable_vga_mem(dev);");
+ i915_disable_vga_mem(dev);
+ printk("---monkey---end--i915_disable_vga_mem(dev);");
+
drm_kms_helper_poll_init(dev);
return 0;
===================================================================
@@ -2465,12 +2465,13 @@ struct i915_params {
bool prefault_disable;
bool load_detect_test;
bool reset;
- bool disable_display;
+ bool disable_display;
bool disable_vtd_wa;
int use_mmio_flip;
int mmio_debug;
bool verbose_state_checks;
bool nuclear_pageflip;
+ bool enable_hd_vgaarb;
};
extern struct i915_params i915 __read_mostly;
===================================================================
@@ -53,6 +53,7 @@ struct i915_params i915 __read_mostly =
.mmio_debug = 0,
.verbose_state_checks = 1,
.nuclear_pageflip = 0,
+ .enable_hd_vgaarb = 1,
};
module_param_named(modeset, i915.modeset, int, 0400);
@@ -168,6 +169,10 @@ module_param_named(enable_cmd_parser, i9
MODULE_PARM_DESC(enable_cmd_parser,
"Enable command parsing (1=enabled [default], 0=disabled)");
+module_param_named(enable_hd_vgaarb, i915.enable_hd_vgaarb, bool, 0444);
+MODULE_PARM_DESC(enable_hd_vgaarb,
+ "Enable support for VGA arbitration on Intel HD IGD. (default: false)");
+
module_param_named(use_mmio_flip, i915.use_mmio_flip, int, 0600);
MODULE_PARM_DESC(use_mmio_flip,
"use MMIO flips (-1=never, 0=driver discretion [default], 1=always)");
===================================================================
@@ -13743,6 +13743,36 @@ static void i915_disable_vga(struct drm_
POSTING_READ(vga_reg);
}
+static void i915_enable_vga_mem(struct drm_device *dev)
+{
+ /* Enable VGA memory on Intel HD */
+ if (i915.enable_hd_vgaarb && HAS_PCH_SPLIT(dev)) {
+ vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
+ outb(inb(VGA_MSR_READ) | VGA_MSR_MEM_EN, VGA_MSR_WRITE);
+ vga_set_legacy_decoding(dev->pdev, VGA_RSRC_LEGACY_IO |
+ VGA_RSRC_LEGACY_MEM |
+ VGA_RSRC_NORMAL_IO |
+ VGA_RSRC_NORMAL_MEM);
+ vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
+ }
+}
+
+void i915_disable_vga_mem(struct drm_device *dev)
+{
+ printk("---monkey--- /* Disable VGA memory on Intel HD */");
+ /* Disable VGA memory on Intel HD */
+ if (i915.enable_hd_vgaarb && HAS_PCH_SPLIT(dev)) {
+ vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
+ outb(inb(VGA_MSR_READ) & ~VGA_MSR_MEM_EN, VGA_MSR_WRITE);
+ vga_set_legacy_decoding(dev->pdev, VGA_RSRC_LEGACY_IO |
+ VGA_RSRC_NORMAL_IO |
+ VGA_RSRC_NORMAL_MEM);
+ vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
+ printk("---monkey--- run/* Disable VGA memory on Intel HD */");
+ }
+}
+
+
void intel_modeset_init_hw(struct drm_device *dev)
{
intel_prepare_ddi(dev);
@@ -14070,9 +14100,14 @@ void i915_redisable_vga_power_on(struct
struct drm_i915_private *dev_priv = dev->dev_private;
u32 vga_reg = i915_vgacntrl_reg(dev);
+
+ printk("---monkey---i915_redisable_vga_power_on");
+
if (!(I915_READ(vga_reg) & VGA_DISP_DISABLE)) {
DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
i915_disable_vga(dev);
+ i915_disable_vga_mem(dev);
+ printk("---monkey---i915_redisable_vga_power_on in if");
}
}
@@ -14353,6 +14388,8 @@ void intel_modeset_cleanup(struct drm_de
intel_fbc_disable(dev);
+ i915_enable_vga_mem(dev);
+
mutex_unlock(&dev->struct_mutex);
/* flush any delayed tasks or pending work */
===================================================================
@@ -1291,6 +1291,8 @@ void intel_pre_disable_primary(struct dr
/* intel_tv.c */
void intel_tv_init(struct drm_device *dev);
+extern void i915_disable_vga_mem(struct drm_device *dev);
+
/* intel_atomic.c */
int intel_atomic_check(struct drm_device *dev,
struct drm_atomic_state *state);