1 files changed, 267 insertions, 5 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index 2e11fd65b4dd..764c15d537ba 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -29,6 +29,10 @@
 #include "nouveau_drv.h"
 #include "nouveau_fb.h"
 #include "nouveau_fbcon.h"
+#include "nouveau_hw.h"
+#include "nouveau_crtc.h"
+#include "nouveau_dma.h"
+#include "nv50_display.h"
 
 static void
 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
@@ -58,18 +62,59 @@ static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
 };
 
 int
-nouveau_framebuffer_init(struct drm_device *dev, struct nouveau_framebuffer *nouveau_fb,
-			 struct drm_mode_fb_cmd *mode_cmd, struct nouveau_bo *nvbo)
+nouveau_framebuffer_init(struct drm_device *dev,
+			 struct nouveau_framebuffer *nv_fb,
+			 struct drm_mode_fb_cmd *mode_cmd,
+			 struct nouveau_bo *nvbo)
 {
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct drm_framebuffer *fb = &nv_fb->base;
 	int ret;
 
-	ret = drm_framebuffer_init(dev, &nouveau_fb->base, &nouveau_framebuffer_funcs);
+	ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
 	if (ret) {
 		return ret;
 	}
 
-	drm_helper_mode_fill_fb_struct(&nouveau_fb->base, mode_cmd);
-	nouveau_fb->nvbo = nvbo;
+	drm_helper_mode_fill_fb_struct(fb, mode_cmd);
+	nv_fb->nvbo = nvbo;
+
+	if (dev_priv->card_type >= NV_50) {
+		u32 tile_flags = nouveau_bo_tile_layout(nvbo);
+		if (tile_flags == 0x7a00 ||
+		    tile_flags == 0xfe00)
+			nv_fb->r_dma = NvEvoFB32;
+		else
+		if (tile_flags == 0x7000)
+			nv_fb->r_dma = NvEvoFB16;
+		else
+			nv_fb->r_dma = NvEvoVRAM_LP;
+
+		switch (fb->depth) {
+		case  8: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_8; break;
+		case 15: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_15; break;
+		case 16: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_16; break;
+		case 24:
+		case 32: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_24; break;
+		case 30: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_30; break;
+		default:
+			 NV_ERROR(dev, "unknown depth %d\n", fb->depth);
+			 return -EINVAL;
+		}
+
+		if (dev_priv->chipset == 0x50)
+			nv_fb->r_format |= (tile_flags << 8);
+
+		if (!tile_flags)
+			nv_fb->r_pitch = 0x00100000 | fb->pitch;
+		else {
+			u32 mode = nvbo->tile_mode;
+			if (dev_priv->card_type >= NV_C0)
+				mode >>= 4;
+			nv_fb->r_pitch = ((fb->pitch / 4) << 4) | mode;
+		}
+	}
+
 	return 0;
 }
 
@@ -104,3 +149,220 @@ const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 	.output_poll_changed = nouveau_fbcon_output_poll_changed,
 };
 
+int
+nouveau_vblank_enable(struct drm_device *dev, int crtc)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+	if (dev_priv->card_type >= NV_50)
+		nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 0,
+			NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
+	else
+		NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
+			    NV_PCRTC_INTR_0_VBLANK);
+
+	return 0;
+}
+
+void
+nouveau_vblank_disable(struct drm_device *dev, int crtc)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+	if (dev_priv->card_type >= NV_50)
+		nv_mask(dev, NV50_PDISPLAY_INTR_EN_1,
+			NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
+	else
+		NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
+}
+
+static int
+nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
+			  struct nouveau_bo *new_bo)
+{
+	int ret;
+
+	ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
+	if (ret)
+		return ret;
+
+	ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
+	if (ret)
+		goto fail;
+
+	ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
+	if (ret)
+		goto fail_unreserve;
+
+	return 0;
+
+fail_unreserve:
+	ttm_bo_unreserve(&new_bo->bo);
+fail:
+	nouveau_bo_unpin(new_bo);
+	return ret;
+}
+
+static void
+nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
+			    struct nouveau_bo *new_bo,
+			    struct nouveau_fence *fence)
+{
+	nouveau_bo_fence(new_bo, fence);
+	ttm_bo_unreserve(&new_bo->bo);
+
+	nouveau_bo_fence(old_bo, fence);
+	ttm_bo_unreserve(&old_bo->bo);
+
+	nouveau_bo_unpin(old_bo);
+}
+
+static int
+nouveau_page_flip_emit(struct nouveau_channel *chan,
+		       struct nouveau_bo *old_bo,
+		       struct nouveau_bo *new_bo,
+		       struct nouveau_page_flip_state *s,
+		       struct nouveau_fence **pfence)
+{
+	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
+	struct drm_device *dev = chan->dev;
+	unsigned long flags;
+	int ret;
+
+	/* Queue it to the pending list */
+	spin_lock_irqsave(&dev->event_lock, flags);
+	list_add_tail(&s->head, &chan->nvsw.flip);
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+
+	/* Synchronize with the old framebuffer */
+	ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
+	if (ret)
+		goto fail;
+
+	/* Emit the pageflip */
+	ret = RING_SPACE(chan, 2);
+	if (ret)
+		goto fail;
+
+	if (dev_priv->card_type < NV_C0)
+		BEGIN_RING(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
+	else
+		BEGIN_NVC0(chan, 2, NvSubM2MF, 0x0500, 1);
+	OUT_RING  (chan, 0);
+	FIRE_RING (chan);
+
+	ret = nouveau_fence_new(chan, pfence, true);
+	if (ret)
+		goto fail;
+
+	return 0;
+fail:
+	spin_lock_irqsave(&dev->event_lock, flags);
+	list_del(&s->head);
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+	return ret;
+}
+
+int
+nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
+		       struct drm_pending_vblank_event *event)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
+	struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
+	struct nouveau_page_flip_state *s;
+	struct nouveau_channel *chan;
+	struct nouveau_fence *fence;
+	int ret;
+
+	if (dev_priv->engine.graph.accel_blocked)
+		return -ENODEV;
+
+	s = kzalloc(sizeof(*s), GFP_KERNEL);
+	if (!s)
+		return -ENOMEM;
+
+	/* Don't let the buffers go away while we flip */
+	ret = nouveau_page_flip_reserve(old_bo, new_bo);
+	if (ret)
+		goto fail_free;
+
+	/* Initialize a page flip struct */
+	*s = (struct nouveau_page_flip_state)
+		{ { }, event, nouveau_crtc(crtc)->index,
+		  fb->bits_per_pixel, fb->pitch, crtc->x, crtc->y,
+		  new_bo->bo.offset };
+
+	/* Choose the channel the flip will be handled in */
+	chan = nouveau_fence_channel(new_bo->bo.sync_obj);
+	if (!chan)
+		chan = nouveau_channel_get_unlocked(dev_priv->channel);
+	mutex_lock(&chan->mutex);
+
+	/* Emit a page flip */
+	if (dev_priv->card_type >= NV_50) {
+		ret = nv50_display_flip_next(crtc, fb, chan);
+		if (ret) {
+			nouveau_channel_put(&chan);
+			goto fail_unreserve;
+		}
+	}
+
+	ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
+	nouveau_channel_put(&chan);
+	if (ret)
+		goto fail_unreserve;
+
+	/* Update the crtc struct and cleanup */
+	crtc->fb = fb;
+
+	nouveau_page_flip_unreserve(old_bo, new_bo, fence);
+	nouveau_fence_unref(&fence);
+	return 0;
+
+fail_unreserve:
+	nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
+fail_free:
+	kfree(s);
+	return ret;
+}
+
+int
+nouveau_finish_page_flip(struct nouveau_channel *chan,
+			 struct nouveau_page_flip_state *ps)
+{
+	struct drm_device *dev = chan->dev;
+	struct nouveau_page_flip_state *s;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->event_lock, flags);
+
+	if (list_empty(&chan->nvsw.flip)) {
+		NV_ERROR(dev, "Unexpected pageflip in channel %d.\n", chan->id);
+		spin_unlock_irqrestore(&dev->event_lock, flags);
+		return -EINVAL;
+	}
+
+	s = list_first_entry(&chan->nvsw.flip,
+			     struct nouveau_page_flip_state, head);
+	if (s->event) {
+		struct drm_pending_vblank_event *e = s->event;
+		struct timeval now;
+
+		do_gettimeofday(&now);
+		e->event.sequence = 0;
+		e->event.tv_sec = now.tv_sec;
+		e->event.tv_usec = now.tv_usec;
+		list_add_tail(&e->base.link, &e->base.file_priv->event_list);
+		wake_up_interruptible(&e->base.file_priv->event_wait);
+	}
+
+	list_del(&s->head);
+	if (ps)
+		*ps = *s;
+	kfree(s);
+
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+	return 0;
+}