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path: root/drivers/gpu/drm/i915/i915_dma.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_dma.c')
-rw-r--r--drivers/gpu/drm/i915/i915_dma.c326
1 files changed, 276 insertions, 50 deletions
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 2307f98349f..8bfc0bbf13e 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -35,6 +35,9 @@
#include "i915_drv.h"
#include "i915_trace.h"
#include <linux/vgaarb.h>
+#include <linux/acpi.h>
+#include <linux/pnp.h>
+#include <linux/vga_switcheroo.h>
/* Really want an OS-independent resettable timer. Would like to have
* this loop run for (eg) 3 sec, but have the timer reset every time
@@ -933,6 +936,120 @@ static int i915_get_bridge_dev(struct drm_device *dev)
return 0;
}
+#define MCHBAR_I915 0x44
+#define MCHBAR_I965 0x48
+#define MCHBAR_SIZE (4*4096)
+
+#define DEVEN_REG 0x54
+#define DEVEN_MCHBAR_EN (1 << 28)
+
+/* Allocate space for the MCH regs if needed, return nonzero on error */
+static int
+intel_alloc_mchbar_resource(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
+ u32 temp_lo, temp_hi = 0;
+ u64 mchbar_addr;
+ int ret = 0;
+
+ if (IS_I965G(dev))
+ pci_read_config_dword(dev_priv->bridge_dev, reg + 4, &temp_hi);
+ pci_read_config_dword(dev_priv->bridge_dev, reg, &temp_lo);
+ mchbar_addr = ((u64)temp_hi << 32) | temp_lo;
+
+ /* If ACPI doesn't have it, assume we need to allocate it ourselves */
+#ifdef CONFIG_PNP
+ if (mchbar_addr &&
+ pnp_range_reserved(mchbar_addr, mchbar_addr + MCHBAR_SIZE)) {
+ ret = 0;
+ goto out;
+ }
+#endif
+
+ /* Get some space for it */
+ ret = pci_bus_alloc_resource(dev_priv->bridge_dev->bus, &dev_priv->mch_res,
+ MCHBAR_SIZE, MCHBAR_SIZE,
+ PCIBIOS_MIN_MEM,
+ 0, pcibios_align_resource,
+ dev_priv->bridge_dev);
+ if (ret) {
+ DRM_DEBUG_DRIVER("failed bus alloc: %d\n", ret);
+ dev_priv->mch_res.start = 0;
+ goto out;
+ }
+
+ if (IS_I965G(dev))
+ pci_write_config_dword(dev_priv->bridge_dev, reg + 4,
+ upper_32_bits(dev_priv->mch_res.start));
+
+ pci_write_config_dword(dev_priv->bridge_dev, reg,
+ lower_32_bits(dev_priv->mch_res.start));
+out:
+ return ret;
+}
+
+/* Setup MCHBAR if possible, return true if we should disable it again */
+static void
+intel_setup_mchbar(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
+ u32 temp;
+ bool enabled;
+
+ dev_priv->mchbar_need_disable = false;
+
+ if (IS_I915G(dev) || IS_I915GM(dev)) {
+ pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
+ enabled = !!(temp & DEVEN_MCHBAR_EN);
+ } else {
+ pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
+ enabled = temp & 1;
+ }
+
+ /* If it's already enabled, don't have to do anything */
+ if (enabled)
+ return;
+
+ if (intel_alloc_mchbar_resource(dev))
+ return;
+
+ dev_priv->mchbar_need_disable = true;
+
+ /* Space is allocated or reserved, so enable it. */
+ if (IS_I915G(dev) || IS_I915GM(dev)) {
+ pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG,
+ temp | DEVEN_MCHBAR_EN);
+ } else {
+ pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
+ pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp | 1);
+ }
+}
+
+static void
+intel_teardown_mchbar(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ int mchbar_reg = IS_I965G(dev) ? MCHBAR_I965 : MCHBAR_I915;
+ u32 temp;
+
+ if (dev_priv->mchbar_need_disable) {
+ if (IS_I915G(dev) || IS_I915GM(dev)) {
+ pci_read_config_dword(dev_priv->bridge_dev, DEVEN_REG, &temp);
+ temp &= ~DEVEN_MCHBAR_EN;
+ pci_write_config_dword(dev_priv->bridge_dev, DEVEN_REG, temp);
+ } else {
+ pci_read_config_dword(dev_priv->bridge_dev, mchbar_reg, &temp);
+ temp &= ~1;
+ pci_write_config_dword(dev_priv->bridge_dev, mchbar_reg, temp);
+ }
+ }
+
+ if (dev_priv->mch_res.start)
+ release_resource(&dev_priv->mch_res);
+}
+
/**
* i915_probe_agp - get AGP bootup configuration
* @pdev: PCI device
@@ -978,59 +1095,123 @@ static int i915_probe_agp(struct drm_device *dev, uint32_t *aperture_size,
* Some of the preallocated space is taken by the GTT
* and popup. GTT is 1K per MB of aperture size, and popup is 4K.
*/
- if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev))
+ if (IS_G4X(dev) || IS_PINEVIEW(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev))
overhead = 4096;
else
overhead = (*aperture_size / 1024) + 4096;
- switch (tmp & INTEL_GMCH_GMS_MASK) {
- case INTEL_855_GMCH_GMS_DISABLED:
- DRM_ERROR("video memory is disabled\n");
- return -1;
- case INTEL_855_GMCH_GMS_STOLEN_1M:
- stolen = 1 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_4M:
- stolen = 4 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_8M:
- stolen = 8 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_16M:
- stolen = 16 * 1024 * 1024;
- break;
- case INTEL_855_GMCH_GMS_STOLEN_32M:
- stolen = 32 * 1024 * 1024;
- break;
- case INTEL_915G_GMCH_GMS_STOLEN_48M:
- stolen = 48 * 1024 * 1024;
- break;
- case INTEL_915G_GMCH_GMS_STOLEN_64M:
- stolen = 64 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_128M:
- stolen = 128 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_256M:
- stolen = 256 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_96M:
- stolen = 96 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_160M:
- stolen = 160 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_224M:
- stolen = 224 * 1024 * 1024;
- break;
- case INTEL_GMCH_GMS_STOLEN_352M:
- stolen = 352 * 1024 * 1024;
- break;
- default:
- DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
- tmp & INTEL_GMCH_GMS_MASK);
- return -1;
+ if (IS_GEN6(dev)) {
+ /* SNB has memory control reg at 0x50.w */
+ pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &tmp);
+
+ switch (tmp & SNB_GMCH_GMS_STOLEN_MASK) {
+ case INTEL_855_GMCH_GMS_DISABLED:
+ DRM_ERROR("video memory is disabled\n");
+ return -1;
+ case SNB_GMCH_GMS_STOLEN_32M:
+ stolen = 32 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_64M:
+ stolen = 64 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_96M:
+ stolen = 96 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_128M:
+ stolen = 128 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_160M:
+ stolen = 160 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_192M:
+ stolen = 192 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_224M:
+ stolen = 224 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_256M:
+ stolen = 256 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_288M:
+ stolen = 288 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_320M:
+ stolen = 320 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_352M:
+ stolen = 352 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_384M:
+ stolen = 384 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_416M:
+ stolen = 416 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_448M:
+ stolen = 448 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_480M:
+ stolen = 480 * 1024 * 1024;
+ break;
+ case SNB_GMCH_GMS_STOLEN_512M:
+ stolen = 512 * 1024 * 1024;
+ break;
+ default:
+ DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
+ tmp & SNB_GMCH_GMS_STOLEN_MASK);
+ return -1;
+ }
+ } else {
+ switch (tmp & INTEL_GMCH_GMS_MASK) {
+ case INTEL_855_GMCH_GMS_DISABLED:
+ DRM_ERROR("video memory is disabled\n");
+ return -1;
+ case INTEL_855_GMCH_GMS_STOLEN_1M:
+ stolen = 1 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_4M:
+ stolen = 4 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_8M:
+ stolen = 8 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_16M:
+ stolen = 16 * 1024 * 1024;
+ break;
+ case INTEL_855_GMCH_GMS_STOLEN_32M:
+ stolen = 32 * 1024 * 1024;
+ break;
+ case INTEL_915G_GMCH_GMS_STOLEN_48M:
+ stolen = 48 * 1024 * 1024;
+ break;
+ case INTEL_915G_GMCH_GMS_STOLEN_64M:
+ stolen = 64 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_128M:
+ stolen = 128 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_256M:
+ stolen = 256 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_96M:
+ stolen = 96 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_160M:
+ stolen = 160 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_224M:
+ stolen = 224 * 1024 * 1024;
+ break;
+ case INTEL_GMCH_GMS_STOLEN_352M:
+ stolen = 352 * 1024 * 1024;
+ break;
+ default:
+ DRM_ERROR("unexpected GMCH_GMS value: 0x%02x\n",
+ tmp & INTEL_GMCH_GMS_MASK);
+ return -1;
+ }
}
+
*preallocated_size = stolen - overhead;
*start = overhead;
@@ -1064,7 +1245,7 @@ static unsigned long i915_gtt_to_phys(struct drm_device *dev,
int gtt_offset, gtt_size;
if (IS_I965G(dev)) {
- if (IS_G4X(dev) || IS_IRONLAKE(dev)) {
+ if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
gtt_offset = 2*1024*1024;
gtt_size = 2*1024*1024;
} else {
@@ -1133,6 +1314,7 @@ static void i915_setup_compression(struct drm_device *dev, int size)
/* Leave 1M for line length buffer & misc. */
compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0);
if (!compressed_fb) {
+ dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
i915_warn_stolen(dev);
return;
}
@@ -1140,6 +1322,7 @@ static void i915_setup_compression(struct drm_device *dev, int size)
compressed_fb = drm_mm_get_block(compressed_fb, size, 4096);
if (!compressed_fb) {
i915_warn_stolen(dev);
+ dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
return;
}
@@ -1199,6 +1382,32 @@ static unsigned int i915_vga_set_decode(void *cookie, bool state)
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
+static void i915_switcheroo_set_state(struct pci_dev *pdev, enum vga_switcheroo_state state)
+{
+ struct drm_device *dev = pci_get_drvdata(pdev);
+ pm_message_t pmm = { .event = PM_EVENT_SUSPEND };
+ if (state == VGA_SWITCHEROO_ON) {
+ printk(KERN_INFO "i915: switched off\n");
+ /* i915 resume handler doesn't set to D0 */
+ pci_set_power_state(dev->pdev, PCI_D0);
+ i915_resume(dev);
+ } else {
+ printk(KERN_ERR "i915: switched off\n");
+ i915_suspend(dev, pmm);
+ }
+}
+
+static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
+{
+ struct drm_device *dev = pci_get_drvdata(pdev);
+ bool can_switch;
+
+ spin_lock(&dev->count_lock);
+ can_switch = (dev->open_count == 0);
+ spin_unlock(&dev->count_lock);
+ return can_switch;
+}
+
static int i915_load_modeset_init(struct drm_device *dev,
unsigned long prealloc_start,
unsigned long prealloc_size,
@@ -1260,6 +1469,12 @@ static int i915_load_modeset_init(struct drm_device *dev,
if (ret)
goto destroy_ringbuffer;
+ ret = vga_switcheroo_register_client(dev->pdev,
+ i915_switcheroo_set_state,
+ i915_switcheroo_can_switch);
+ if (ret)
+ goto destroy_ringbuffer;
+
intel_modeset_init(dev);
ret = drm_irq_install(dev);
@@ -1281,7 +1496,9 @@ static int i915_load_modeset_init(struct drm_device *dev,
return 0;
destroy_ringbuffer:
+ mutex_lock(&dev->struct_mutex);
i915_gem_cleanup_ringbuffer(dev);
+ mutex_unlock(&dev->struct_mutex);
out:
return ret;
}
@@ -1445,11 +1662,14 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
dev->driver->get_vblank_counter = i915_get_vblank_counter;
dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
- if (IS_G4X(dev) || IS_IRONLAKE(dev)) {
+ if (IS_G4X(dev) || IS_IRONLAKE(dev) || IS_GEN6(dev)) {
dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
dev->driver->get_vblank_counter = gm45_get_vblank_counter;
}
+ /* Try to make sure MCHBAR is enabled before poking at it */
+ intel_setup_mchbar(dev);
+
i915_gem_load(dev);
/* Init HWS */
@@ -1523,6 +1743,8 @@ int i915_driver_unload(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ i915_destroy_error_state(dev);
+
destroy_workqueue(dev_priv->wq);
del_timer_sync(&dev_priv->hangcheck_timer);
@@ -1544,6 +1766,7 @@ int i915_driver_unload(struct drm_device *dev)
dev_priv->child_dev_num = 0;
}
drm_irq_uninstall(dev);
+ vga_switcheroo_unregister_client(dev->pdev);
vga_client_register(dev->pdev, NULL, NULL, NULL);
}
@@ -1569,6 +1792,8 @@ int i915_driver_unload(struct drm_device *dev)
intel_cleanup_overlay(dev);
}
+ intel_teardown_mchbar(dev);
+
pci_dev_put(dev_priv->bridge_dev);
kfree(dev->dev_private);
@@ -1611,6 +1836,7 @@ void i915_driver_lastclose(struct drm_device * dev)
if (!dev_priv || drm_core_check_feature(dev, DRIVER_MODESET)) {
drm_fb_helper_restore();
+ vga_switcheroo_process_delayed_switch();
return;
}