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path: root/drivers/gpu/drm/nouveau/nouveau_state.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_state.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_state.c327
1 files changed, 266 insertions, 61 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 731acea..01adcfb 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -46,6 +46,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_engine *engine = &dev_priv->engine;
+ u32 pclass = dev->pdev->class >> 8;
switch (dev_priv->chipset & 0xf0) {
case 0x00:
@@ -91,6 +92,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->pm.clock_pre = nv04_pm_clock_pre;
engine->pm.clock_set = nv04_pm_clock_set;
engine->vram.init = nouveau_mem_detect;
+ engine->vram.takedown = nouveau_stub_takedown;
engine->vram.flags_valid = nouveau_mem_flags_valid;
break;
case 0x10:
@@ -139,6 +141,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->pm.clock_pre = nv04_pm_clock_pre;
engine->pm.clock_set = nv04_pm_clock_set;
engine->vram.init = nouveau_mem_detect;
+ engine->vram.takedown = nouveau_stub_takedown;
engine->vram.flags_valid = nouveau_mem_flags_valid;
break;
case 0x20:
@@ -187,6 +190,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->pm.clock_pre = nv04_pm_clock_pre;
engine->pm.clock_set = nv04_pm_clock_set;
engine->vram.init = nouveau_mem_detect;
+ engine->vram.takedown = nouveau_stub_takedown;
engine->vram.flags_valid = nouveau_mem_flags_valid;
break;
case 0x30:
@@ -237,6 +241,7 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->pm.voltage_get = nouveau_voltage_gpio_get;
engine->pm.voltage_set = nouveau_voltage_gpio_set;
engine->vram.init = nouveau_mem_detect;
+ engine->vram.takedown = nouveau_stub_takedown;
engine->vram.flags_valid = nouveau_mem_flags_valid;
break;
case 0x40:
@@ -282,19 +287,20 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->gpio.get = nv10_gpio_get;
engine->gpio.set = nv10_gpio_set;
engine->gpio.irq_enable = NULL;
- engine->pm.clock_get = nv04_pm_clock_get;
- engine->pm.clock_pre = nv04_pm_clock_pre;
- engine->pm.clock_set = nv04_pm_clock_set;
+ engine->pm.clocks_get = nv40_pm_clocks_get;
+ engine->pm.clocks_pre = nv40_pm_clocks_pre;
+ engine->pm.clocks_set = nv40_pm_clocks_set;
engine->pm.voltage_get = nouveau_voltage_gpio_get;
engine->pm.voltage_set = nouveau_voltage_gpio_set;
engine->pm.temp_get = nv40_temp_get;
engine->vram.init = nouveau_mem_detect;
+ engine->vram.takedown = nouveau_stub_takedown;
engine->vram.flags_valid = nouveau_mem_flags_valid;
break;
case 0x50:
case 0x80: /* gotta love NVIDIA's consistency.. */
case 0x90:
- case 0xA0:
+ case 0xa0:
engine->instmem.init = nv50_instmem_init;
engine->instmem.takedown = nv50_instmem_takedown;
engine->instmem.suspend = nv50_instmem_suspend;
@@ -354,9 +360,9 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->pm.clock_set = nv50_pm_clock_set;
break;
default:
- engine->pm.clock_get = nva3_pm_clock_get;
- engine->pm.clock_pre = nva3_pm_clock_pre;
- engine->pm.clock_set = nva3_pm_clock_set;
+ engine->pm.clocks_get = nva3_pm_clocks_get;
+ engine->pm.clocks_pre = nva3_pm_clocks_pre;
+ engine->pm.clocks_set = nva3_pm_clocks_set;
break;
}
engine->pm.voltage_get = nouveau_voltage_gpio_get;
@@ -366,11 +372,12 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
else
engine->pm.temp_get = nv40_temp_get;
engine->vram.init = nv50_vram_init;
+ engine->vram.takedown = nv50_vram_fini;
engine->vram.get = nv50_vram_new;
engine->vram.put = nv50_vram_del;
engine->vram.flags_valid = nv50_vram_flags_valid;
break;
- case 0xC0:
+ case 0xc0:
engine->instmem.init = nvc0_instmem_init;
engine->instmem.takedown = nvc0_instmem_takedown;
engine->instmem.suspend = nvc0_instmem_suspend;
@@ -411,15 +418,79 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->gpio.irq_unregister = nv50_gpio_irq_unregister;
engine->gpio.irq_enable = nv50_gpio_irq_enable;
engine->vram.init = nvc0_vram_init;
+ engine->vram.takedown = nv50_vram_fini;
engine->vram.get = nvc0_vram_new;
engine->vram.put = nv50_vram_del;
engine->vram.flags_valid = nvc0_vram_flags_valid;
+ engine->pm.temp_get = nv84_temp_get;
+ engine->pm.clocks_get = nvc0_pm_clocks_get;
+ engine->pm.voltage_get = nouveau_voltage_gpio_get;
+ engine->pm.voltage_set = nouveau_voltage_gpio_set;
+ break;
+ case 0xd0:
+ engine->instmem.init = nvc0_instmem_init;
+ engine->instmem.takedown = nvc0_instmem_takedown;
+ engine->instmem.suspend = nvc0_instmem_suspend;
+ engine->instmem.resume = nvc0_instmem_resume;
+ engine->instmem.get = nv50_instmem_get;
+ engine->instmem.put = nv50_instmem_put;
+ engine->instmem.map = nv50_instmem_map;
+ engine->instmem.unmap = nv50_instmem_unmap;
+ engine->instmem.flush = nv84_instmem_flush;
+ engine->mc.init = nv50_mc_init;
+ engine->mc.takedown = nv50_mc_takedown;
+ engine->timer.init = nv04_timer_init;
+ engine->timer.read = nv04_timer_read;
+ engine->timer.takedown = nv04_timer_takedown;
+ engine->fb.init = nvc0_fb_init;
+ engine->fb.takedown = nvc0_fb_takedown;
+ engine->fifo.channels = 128;
+ engine->fifo.init = nvc0_fifo_init;
+ engine->fifo.takedown = nvc0_fifo_takedown;
+ engine->fifo.disable = nvc0_fifo_disable;
+ engine->fifo.enable = nvc0_fifo_enable;
+ engine->fifo.reassign = nvc0_fifo_reassign;
+ engine->fifo.channel_id = nvc0_fifo_channel_id;
+ engine->fifo.create_context = nvc0_fifo_create_context;
+ engine->fifo.destroy_context = nvc0_fifo_destroy_context;
+ engine->fifo.load_context = nvc0_fifo_load_context;
+ engine->fifo.unload_context = nvc0_fifo_unload_context;
+ engine->display.early_init = nouveau_stub_init;
+ engine->display.late_takedown = nouveau_stub_takedown;
+ engine->display.create = nvd0_display_create;
+ engine->display.init = nvd0_display_init;
+ engine->display.destroy = nvd0_display_destroy;
+ engine->gpio.init = nv50_gpio_init;
+ engine->gpio.takedown = nouveau_stub_takedown;
+ engine->gpio.get = nvd0_gpio_get;
+ engine->gpio.set = nvd0_gpio_set;
+ engine->gpio.irq_register = nv50_gpio_irq_register;
+ engine->gpio.irq_unregister = nv50_gpio_irq_unregister;
+ engine->gpio.irq_enable = nv50_gpio_irq_enable;
+ engine->vram.init = nvc0_vram_init;
+ engine->vram.takedown = nv50_vram_fini;
+ engine->vram.get = nvc0_vram_new;
+ engine->vram.put = nv50_vram_del;
+ engine->vram.flags_valid = nvc0_vram_flags_valid;
+ engine->pm.clocks_get = nvc0_pm_clocks_get;
+ engine->pm.voltage_get = nouveau_voltage_gpio_get;
+ engine->pm.voltage_set = nouveau_voltage_gpio_set;
break;
default:
NV_ERROR(dev, "NV%02x unsupported\n", dev_priv->chipset);
return 1;
}
+ /* headless mode */
+ if (nouveau_modeset == 2 ||
+ (nouveau_modeset < 0 && pclass != PCI_CLASS_DISPLAY_VGA)) {
+ engine->display.early_init = nouveau_stub_init;
+ engine->display.late_takedown = nouveau_stub_takedown;
+ engine->display.create = nouveau_stub_init;
+ engine->display.init = nouveau_stub_init;
+ engine->display.destroy = nouveau_stub_takedown;
+ }
+
return 0;
}
@@ -441,21 +512,6 @@ nouveau_vga_set_decode(void *priv, bool state)
return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
}
-static int
-nouveau_card_init_channel(struct drm_device *dev)
-{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- int ret;
-
- ret = nouveau_channel_alloc(dev, &dev_priv->channel,
- (struct drm_file *)-2, NvDmaFB, NvDmaTT);
- if (ret)
- return ret;
-
- mutex_unlock(&dev_priv->channel->mutex);
- return 0;
-}
-
static void nouveau_switcheroo_set_state(struct pci_dev *pdev,
enum vga_switcheroo_state state)
{
@@ -525,9 +581,17 @@ nouveau_card_init(struct drm_device *dev)
if (ret)
goto out_display_early;
+ /* workaround an odd issue on nvc1 by disabling the device's
+ * nosnoop capability. hopefully won't cause issues until a
+ * better fix is found - assuming there is one...
+ */
+ if (dev_priv->chipset == 0xc1) {
+ nv_mask(dev, 0x00088080, 0x00000800, 0x00000000);
+ }
+
nouveau_pm_init(dev);
- ret = nouveau_mem_vram_init(dev);
+ ret = engine->vram.init(dev);
if (ret)
goto out_bios;
@@ -539,10 +603,14 @@ nouveau_card_init(struct drm_device *dev)
if (ret)
goto out_gpuobj;
- ret = nouveau_mem_gart_init(dev);
+ ret = nouveau_mem_vram_init(dev);
if (ret)
goto out_instmem;
+ ret = nouveau_mem_gart_init(dev);
+ if (ret)
+ goto out_ttmvram;
+
/* PMC */
ret = engine->mc.init(dev);
if (ret)
@@ -563,7 +631,7 @@ nouveau_card_init(struct drm_device *dev)
if (ret)
goto out_timer;
- if (!nouveau_noaccel) {
+ if (!dev_priv->noaccel) {
switch (dev_priv->card_type) {
case NV_04:
nv04_graph_create(dev);
@@ -618,8 +686,11 @@ nouveau_card_init(struct drm_device *dev)
break;
}
- if (dev_priv->card_type == NV_40)
- nv40_mpeg_create(dev);
+ if (dev_priv->card_type == NV_40 ||
+ dev_priv->chipset == 0x31 ||
+ dev_priv->chipset == 0x34 ||
+ dev_priv->chipset == 0x36)
+ nv31_mpeg_create(dev);
else
if (dev_priv->card_type == NV_50 &&
(dev_priv->chipset < 0x98 || dev_priv->chipset == 0xa0))
@@ -639,50 +710,78 @@ nouveau_card_init(struct drm_device *dev)
goto out_engine;
}
- ret = engine->display.create(dev);
+ ret = nouveau_irq_init(dev);
if (ret)
goto out_fifo;
- ret = drm_vblank_init(dev, nv_two_heads(dev) ? 2 : 1);
- if (ret)
- goto out_vblank;
+ /* initialise general modesetting */
+ drm_mode_config_init(dev);
+ drm_mode_create_scaling_mode_property(dev);
+ drm_mode_create_dithering_property(dev);
+ dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;
+ dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
+ dev->mode_config.min_width = 0;
+ dev->mode_config.min_height = 0;
+ if (dev_priv->card_type < NV_10) {
+ dev->mode_config.max_width = 2048;
+ dev->mode_config.max_height = 2048;
+ } else
+ if (dev_priv->card_type < NV_50) {
+ dev->mode_config.max_width = 4096;
+ dev->mode_config.max_height = 4096;
+ } else {
+ dev->mode_config.max_width = 8192;
+ dev->mode_config.max_height = 8192;
+ }
- ret = nouveau_irq_init(dev);
+ ret = engine->display.create(dev);
if (ret)
- goto out_vblank;
+ goto out_irq;
- /* what about PVIDEO/PCRTC/PRAMDAC etc? */
+ nouveau_backlight_init(dev);
if (dev_priv->eng[NVOBJ_ENGINE_GR]) {
ret = nouveau_fence_init(dev);
if (ret)
- goto out_irq;
+ goto out_disp;
- ret = nouveau_card_init_channel(dev);
+ ret = nouveau_channel_alloc(dev, &dev_priv->channel, NULL,
+ NvDmaFB, NvDmaTT);
if (ret)
goto out_fence;
+
+ mutex_unlock(&dev_priv->channel->mutex);
+ }
+
+ if (dev->mode_config.num_crtc) {
+ ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
+ if (ret)
+ goto out_chan;
+
+ nouveau_fbcon_init(dev);
+ drm_kms_helper_poll_init(dev);
}
- nouveau_fbcon_init(dev);
- drm_kms_helper_poll_init(dev);
return 0;
+out_chan:
+ nouveau_channel_put_unlocked(&dev_priv->channel);
out_fence:
nouveau_fence_fini(dev);
+out_disp:
+ nouveau_backlight_exit(dev);
+ engine->display.destroy(dev);
out_irq:
nouveau_irq_fini(dev);
-out_vblank:
- drm_vblank_cleanup(dev);
- engine->display.destroy(dev);
out_fifo:
- if (!nouveau_noaccel)
+ if (!dev_priv->noaccel)
engine->fifo.takedown(dev);
out_engine:
- if (!nouveau_noaccel) {
+ if (!dev_priv->noaccel) {
for (e = e - 1; e >= 0; e--) {
if (!dev_priv->eng[e])
continue;
- dev_priv->eng[e]->fini(dev, e);
+ dev_priv->eng[e]->fini(dev, e, false);
dev_priv->eng[e]->destroy(dev,e );
}
}
@@ -696,12 +795,14 @@ out_mc:
engine->mc.takedown(dev);
out_gart:
nouveau_mem_gart_fini(dev);
+out_ttmvram:
+ nouveau_mem_vram_fini(dev);
out_instmem:
engine->instmem.takedown(dev);
out_gpuobj:
nouveau_gpuobj_takedown(dev);
out_vram:
- nouveau_mem_vram_fini(dev);
+ engine->vram.takedown(dev);
out_bios:
nouveau_pm_fini(dev);
nouveau_bios_takedown(dev);
@@ -718,16 +819,26 @@ static void nouveau_card_takedown(struct drm_device *dev)
struct nouveau_engine *engine = &dev_priv->engine;
int e;
+ if (dev->mode_config.num_crtc) {
+ drm_kms_helper_poll_fini(dev);
+ nouveau_fbcon_fini(dev);
+ drm_vblank_cleanup(dev);
+ }
+
if (dev_priv->channel) {
- nouveau_fence_fini(dev);
nouveau_channel_put_unlocked(&dev_priv->channel);
+ nouveau_fence_fini(dev);
}
- if (!nouveau_noaccel) {
+ nouveau_backlight_exit(dev);
+ engine->display.destroy(dev);
+ drm_mode_config_cleanup(dev);
+
+ if (!dev_priv->noaccel) {
engine->fifo.takedown(dev);
for (e = NVOBJ_ENGINE_NR - 1; e >= 0; e--) {
if (dev_priv->eng[e]) {
- dev_priv->eng[e]->fini(dev, e);
+ dev_priv->eng[e]->fini(dev, e, false);
dev_priv->eng[e]->destroy(dev,e );
}
}
@@ -748,13 +859,13 @@ static void nouveau_card_takedown(struct drm_device *dev)
ttm_bo_clean_mm(&dev_priv->ttm.bdev, TTM_PL_TT);
mutex_unlock(&dev->struct_mutex);
nouveau_mem_gart_fini(dev);
+ nouveau_mem_vram_fini(dev);
engine->instmem.takedown(dev);
nouveau_gpuobj_takedown(dev);
- nouveau_mem_vram_fini(dev);
+ engine->vram.takedown(dev);
nouveau_irq_fini(dev);
- drm_vblank_cleanup(dev);
nouveau_pm_fini(dev);
nouveau_bios_takedown(dev);
@@ -762,6 +873,41 @@ static void nouveau_card_takedown(struct drm_device *dev)
vga_client_register(dev->pdev, NULL, NULL, NULL);
}
+int
+nouveau_open(struct drm_device *dev, struct drm_file *file_priv)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_fpriv *fpriv;
+ int ret;
+
+ fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
+ if (unlikely(!fpriv))
+ return -ENOMEM;
+
+ spin_lock_init(&fpriv->lock);
+ INIT_LIST_HEAD(&fpriv->channels);
+
+ if (dev_priv->card_type == NV_50) {
+ ret = nouveau_vm_new(dev, 0, (1ULL << 40), 0x0020000000ULL,
+ &fpriv->vm);
+ if (ret) {
+ kfree(fpriv);
+ return ret;
+ }
+ } else
+ if (dev_priv->card_type >= NV_C0) {
+ ret = nouveau_vm_new(dev, 0, (1ULL << 40), 0x0008000000ULL,
+ &fpriv->vm);
+ if (ret) {
+ kfree(fpriv);
+ return ret;
+ }
+ }
+
+ file_priv->driver_priv = fpriv;
+ return 0;
+}
+
/* here a client dies, release the stuff that was allocated for its
* file_priv */
void nouveau_preclose(struct drm_device *dev, struct drm_file *file_priv)
@@ -769,6 +915,14 @@ void nouveau_preclose(struct drm_device *dev, struct drm_file *file_priv)
nouveau_channel_cleanup(dev, file_priv);
}
+void
+nouveau_postclose(struct drm_device *dev, struct drm_file *file_priv)
+{
+ struct nouveau_fpriv *fpriv = nouveau_fpriv(file_priv);
+ nouveau_vm_ref(NULL, &fpriv->vm, NULL);
+ kfree(fpriv);
+}
+
/* first module load, setup the mmio/fb mapping */
/* KMS: we need mmio at load time, not when the first drm client opens. */
int nouveau_firstopen(struct drm_device *dev)
@@ -844,7 +998,7 @@ static int nouveau_remove_conflicting_drivers(struct drm_device *dev)
int nouveau_load(struct drm_device *dev, unsigned long flags)
{
struct drm_nouveau_private *dev_priv;
- uint32_t reg0;
+ uint32_t reg0, strap;
resource_size_t mmio_start_offs;
int ret;
@@ -888,13 +1042,11 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
/* Time to determine the card architecture */
reg0 = nv_rd32(dev, NV03_PMC_BOOT_0);
- dev_priv->stepping = 0; /* XXX: add stepping for pre-NV10? */
/* We're dealing with >=NV10 */
if ((reg0 & 0x0f000000) > 0) {
/* Bit 27-20 contain the architecture in hex */
dev_priv->chipset = (reg0 & 0xff00000) >> 20;
- dev_priv->stepping = (reg0 & 0xff);
/* NV04 or NV05 */
} else if ((reg0 & 0xff00fff0) == 0x20004000) {
if (reg0 & 0x00f00000)
@@ -924,6 +1076,9 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
case 0xc0:
dev_priv->card_type = NV_C0;
break;
+ case 0xd0:
+ dev_priv->card_type = NV_D0;
+ break;
default:
NV_INFO(dev, "Unsupported chipset 0x%08x\n", reg0);
ret = -EINVAL;
@@ -933,6 +1088,43 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
NV_INFO(dev, "Detected an NV%2x generation card (0x%08x)\n",
dev_priv->card_type, reg0);
+ /* determine frequency of timing crystal */
+ strap = nv_rd32(dev, 0x101000);
+ if ( dev_priv->chipset < 0x17 ||
+ (dev_priv->chipset >= 0x20 && dev_priv->chipset <= 0x25))
+ strap &= 0x00000040;
+ else
+ strap &= 0x00400040;
+
+ switch (strap) {
+ case 0x00000000: dev_priv->crystal = 13500; break;
+ case 0x00000040: dev_priv->crystal = 14318; break;
+ case 0x00400000: dev_priv->crystal = 27000; break;
+ case 0x00400040: dev_priv->crystal = 25000; break;
+ }
+
+ NV_DEBUG(dev, "crystal freq: %dKHz\n", dev_priv->crystal);
+
+ /* Determine whether we'll attempt acceleration or not, some
+ * cards are disabled by default here due to them being known
+ * non-functional, or never been tested due to lack of hw.
+ */
+ dev_priv->noaccel = !!nouveau_noaccel;
+ if (nouveau_noaccel == -1) {
+ switch (dev_priv->chipset) {
+#if 0
+ case 0xXX: /* known broken */
+ NV_INFO(dev, "acceleration disabled by default, pass "
+ "noaccel=0 to force enable\n");
+ dev_priv->noaccel = true;
+ break;
+#endif
+ default:
+ dev_priv->noaccel = false;
+ break;
+ }
+ }
+
ret = nouveau_remove_conflicting_drivers(dev);
if (ret)
goto err_mmio;
@@ -948,7 +1140,7 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
ioremap(pci_resource_start(dev->pdev, ramin_bar),
dev_priv->ramin_size);
if (!dev_priv->ramin) {
- NV_ERROR(dev, "Failed to PRAMIN BAR");
+ NV_ERROR(dev, "Failed to map PRAMIN BAR\n");
ret = -ENOMEM;
goto err_mmio;
}
@@ -997,11 +1189,7 @@ void nouveau_lastclose(struct drm_device *dev)
int nouveau_unload(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_engine *engine = &dev_priv->engine;
- drm_kms_helper_poll_fini(dev);
- nouveau_fbcon_fini(dev);
- engine->display.destroy(dev);
nouveau_card_takedown(dev);
iounmap(dev_priv->mmio);
@@ -1031,7 +1219,7 @@ int nouveau_ioctl_getparam(struct drm_device *dev, void *data,
case NOUVEAU_GETPARAM_BUS_TYPE:
if (drm_pci_device_is_agp(dev))
getparam->value = NV_AGP;
- else if (drm_pci_device_is_pcie(dev))
+ else if (pci_is_pcie(dev->pdev))
getparam->value = NV_PCIE;
else
getparam->value = NV_PCI;
@@ -1052,7 +1240,7 @@ int nouveau_ioctl_getparam(struct drm_device *dev, void *data,
getparam->value = 1;
break;
case NOUVEAU_GETPARAM_HAS_PAGEFLIP:
- getparam->value = 1;
+ getparam->value = dev_priv->card_type < NV_D0;
break;
case NOUVEAU_GETPARAM_GRAPH_UNITS:
/* NV40 and NV50 versions are quite different, but register
@@ -1120,6 +1308,23 @@ nouveau_wait_ne(struct drm_device *dev, uint64_t timeout,
return false;
}
+/* Wait until cond(data) == true, up until timeout has hit */
+bool
+nouveau_wait_cb(struct drm_device *dev, u64 timeout,
+ bool (*cond)(void *), void *data)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
+ u64 start = ptimer->read(dev);
+
+ do {
+ if (cond(data) == true)
+ return true;
+ } while (ptimer->read(dev) - start < timeout);
+
+ return false;
+}
+
/* Waits for PGRAPH to go completely idle */
bool nouveau_wait_for_idle(struct drm_device *dev)
{