From e506a0c6381f180858d2e343c3ed5c0bde8e84ba Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 5 Jul 2012 12:17:29 +0200 Subject: [PATCH] drm/i915: introduce crtc->dspaddr_offset To avoid recomputing the display framebuffer offset on gen2/3 pageflips. This is also prep work to do similar trickery on gen4+ Also: - kill "Start", such upper-case remnants from the ddx must surely die. - rename "Offset" to linear_offset, to make it clearer that on gen4+ this is only used by the hw for linear buffers, for tiled buffers it uses the TILEOFF register. - call DSAPADDR DSPLINOFF on gen4+ for the same reason (and because the documentation really renamed the register). Reviewed-by: Chris Wilson Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_display.c | 46 +++++++++++++--------------- drivers/gpu/drm/i915/intel_drv.h | 5 +++ 3 files changed, 27 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 1bd17e7dd479..4a2ea42b5ecf 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -2979,6 +2979,7 @@ #define DSPSIZE(plane) _PIPE(plane, _DSPASIZE, _DSPBSIZE) #define DSPSURF(plane) _PIPE(plane, _DSPASURF, _DSPBSURF) #define DSPTILEOFF(plane) _PIPE(plane, _DSPATILEOFF, _DSPBTILEOFF) +#define DSPLINOFF(plane) DSPADDR(plane) /* Display/Sprite base address macros */ #define DISP_BASEADDR_MASK (0xfffff000) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 7e31f7af0de8..f8c24123dde0 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1982,7 +1982,7 @@ static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb, struct intel_framebuffer *intel_fb; struct drm_i915_gem_object *obj; int plane = intel_crtc->plane; - unsigned long Start, Offset; + unsigned long linear_offset; u32 dspcntr; u32 reg; @@ -2029,18 +2029,22 @@ static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb, I915_WRITE(reg, dspcntr); - Start = obj->gtt_offset; - Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8); + linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8); - DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n", - Start, Offset, x, y, fb->pitches[0]); + if (INTEL_INFO(dev)->gen >= 4) + intel_crtc->dspaddr_offset = 0; + else + intel_crtc->dspaddr_offset = linear_offset; + + DRM_DEBUG_KMS("Writing base %08X %08lX %d %d %d\n", + obj->gtt_offset, linear_offset, x, y, fb->pitches[0]); I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]); if (INTEL_INFO(dev)->gen >= 4) { - I915_MODIFY_DISPBASE(DSPSURF(plane), Start); + I915_MODIFY_DISPBASE(DSPSURF(plane), obj->gtt_offset); I915_WRITE(DSPTILEOFF(plane), (y << 16) | x); - I915_WRITE(DSPADDR(plane), Offset); + I915_WRITE(DSPLINOFF(plane), linear_offset); } else - I915_WRITE(DSPADDR(plane), Start + Offset); + I915_WRITE(DSPADDR(plane), obj->gtt_offset + linear_offset); POSTING_READ(reg); return 0; @@ -2055,7 +2059,7 @@ static int ironlake_update_plane(struct drm_crtc *crtc, struct intel_framebuffer *intel_fb; struct drm_i915_gem_object *obj; int plane = intel_crtc->plane; - unsigned long Start, Offset; + unsigned long linear_offset; u32 dspcntr; u32 reg; @@ -2110,15 +2114,15 @@ static int ironlake_update_plane(struct drm_crtc *crtc, I915_WRITE(reg, dspcntr); - Start = obj->gtt_offset; - Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8); + linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8); + intel_crtc->dspaddr_offset = 0; - DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n", - Start, Offset, x, y, fb->pitches[0]); + DRM_DEBUG_KMS("Writing base %08X %08lX %d %d %d\n", + obj->gtt_offset, linear_offset, x, y, fb->pitches[0]); I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]); - I915_MODIFY_DISPBASE(DSPSURF(plane), Start); + I915_MODIFY_DISPBASE(DSPSURF(plane), obj->gtt_offset); I915_WRITE(DSPTILEOFF(plane), (y << 16) | x); - I915_WRITE(DSPADDR(plane), Offset); + I915_WRITE(DSPLINOFF(plane), linear_offset); POSTING_READ(reg); return 0; @@ -6194,7 +6198,6 @@ static int intel_gen2_queue_flip(struct drm_device *dev, { struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - unsigned long offset; u32 flip_mask; struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; int ret; @@ -6203,9 +6206,6 @@ static int intel_gen2_queue_flip(struct drm_device *dev, if (ret) goto err; - /* Offset into the new buffer for cases of shared fbs between CRTCs */ - offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8; - ret = intel_ring_begin(ring, 6); if (ret) goto err_unpin; @@ -6222,7 +6222,7 @@ static int intel_gen2_queue_flip(struct drm_device *dev, intel_ring_emit(ring, MI_DISPLAY_FLIP | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); intel_ring_emit(ring, fb->pitches[0]); - intel_ring_emit(ring, obj->gtt_offset + offset); + intel_ring_emit(ring, obj->gtt_offset + intel_crtc->dspaddr_offset); intel_ring_emit(ring, 0); /* aux display base address, unused */ intel_ring_advance(ring); return 0; @@ -6240,7 +6240,6 @@ static int intel_gen3_queue_flip(struct drm_device *dev, { struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - unsigned long offset; u32 flip_mask; struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; int ret; @@ -6249,9 +6248,6 @@ static int intel_gen3_queue_flip(struct drm_device *dev, if (ret) goto err; - /* Offset into the new buffer for cases of shared fbs between CRTCs */ - offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8; - ret = intel_ring_begin(ring, 6); if (ret) goto err_unpin; @@ -6265,7 +6261,7 @@ static int intel_gen3_queue_flip(struct drm_device *dev, intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); intel_ring_emit(ring, fb->pitches[0]); - intel_ring_emit(ring, obj->gtt_offset + offset); + intel_ring_emit(ring, obj->gtt_offset + intel_crtc->dspaddr_offset); intel_ring_emit(ring, MI_NOOP); intel_ring_advance(ring); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index bc6d6165e37e..b7859e7110a7 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -177,6 +177,11 @@ struct intel_crtc { struct intel_unpin_work *unpin_work; int fdi_lanes; + /* Display surface base address adjustement for pageflips. Note that on + * gen4+ this only adjusts up to a tile, offsets within a tile are + * handled in the hw itself (with the TILEOFF register). */ + unsigned long dspaddr_offset; + struct drm_i915_gem_object *cursor_bo; uint32_t cursor_addr; int16_t cursor_x, cursor_y; -- GitLab