From 4b0e333ee1100e621c5530d368a3029d41131214 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 30 May 2014 16:35:26 +0300 Subject: [PATCH] drm/i915: Always apply cursor width changes It is possible for userspace to create a big object large enough for a 256x256, and then switch over to using it as a 64x64 cursor. This requires the cursor update routines to check for a change in width on every update, rather than just when the cursor is originally enabled. This also fixes an issue with 845g/865g which cannot change the base address of the cursor whilst it is active. Signed-off-by: Chris Wilson [Antti:rebased, adjusted macro names and moved some lines, no functional changes] Reviewed-by: Antti Koskipaa Tested-by: Antti Koskipaa Cc: stable@vger.kernel.org Testcase: igt/kms_cursor_crc/cursor-size-change Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 2 +- drivers/gpu/drm/i915/intel_display.c | 106 +++++++++++++++++------------------ drivers/gpu/drm/i915/intel_drv.h | 3 +- 3 files changed, 53 insertions(+), 58 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 98ab492ee60a..601caa88c092 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2353,7 +2353,7 @@ static int i915_display_info(struct seq_file *m, void *unused) active = cursor_position(dev, crtc->pipe, &x, &y); seq_printf(m, "\tcursor visible? %s, position (%d, %d), addr 0x%08x, active? %s\n", - yesno(crtc->cursor_visible), + yesno(crtc->cursor_base), x, y, crtc->cursor_addr, yesno(active)); } diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index ea0b5df226fb..5abef0426cc5 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -7866,29 +7866,33 @@ static void i845_update_cursor(struct drm_crtc *crtc, u32 base) struct drm_device *dev = crtc->dev; struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - bool visible = base != 0; - u32 cntl; + uint32_t cntl; - if (intel_crtc->cursor_visible == visible) - return; - - cntl = I915_READ(_CURACNTR); - if (visible) { + if (base != intel_crtc->cursor_base) { /* On these chipsets we can only modify the base whilst * the cursor is disabled. */ + if (intel_crtc->cursor_cntl) { + I915_WRITE(_CURACNTR, 0); + POSTING_READ(_CURACNTR); + intel_crtc->cursor_cntl = 0; + } + I915_WRITE(_CURABASE, base); + POSTING_READ(_CURABASE); + } - cntl &= ~(CURSOR_FORMAT_MASK); - /* XXX width must be 64, stride 256 => 0x00 << 28 */ - cntl |= CURSOR_ENABLE | + /* XXX width must be 64, stride 256 => 0x00 << 28 */ + cntl = 0; + if (base) + cntl = (CURSOR_ENABLE | CURSOR_GAMMA_ENABLE | - CURSOR_FORMAT_ARGB; - } else - cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE); - I915_WRITE(_CURACNTR, cntl); - - intel_crtc->cursor_visible = visible; + CURSOR_FORMAT_ARGB); + if (intel_crtc->cursor_cntl != cntl) { + I915_WRITE(_CURACNTR, cntl); + POSTING_READ(_CURACNTR); + intel_crtc->cursor_cntl = cntl; + } } static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base) @@ -7897,16 +7901,12 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base) struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int pipe = intel_crtc->pipe; - bool visible = base != 0; - - if (intel_crtc->cursor_visible != visible) { - int16_t width = intel_crtc->cursor_width; - uint32_t cntl = I915_READ(CURCNTR(pipe)); - if (base) { - cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT); - cntl |= MCURSOR_GAMMA_ENABLE; + uint32_t cntl; - switch (width) { + cntl = 0; + if (base) { + cntl = MCURSOR_GAMMA_ENABLE; + switch (intel_crtc->cursor_width) { case 64: cntl |= CURSOR_MODE_64_ARGB_AX; break; @@ -7919,18 +7919,16 @@ static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base) default: WARN_ON(1); return; - } - cntl |= pipe << 28; /* Connect to correct pipe */ - } else { - cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE); - cntl |= CURSOR_MODE_DISABLE; } + cntl |= pipe << 28; /* Connect to correct pipe */ + } + if (intel_crtc->cursor_cntl != cntl) { I915_WRITE(CURCNTR(pipe), cntl); - - intel_crtc->cursor_visible = visible; + POSTING_READ(CURCNTR(pipe)); + intel_crtc->cursor_cntl = cntl; } + /* and commit changes on next vblank */ - POSTING_READ(CURCNTR(pipe)); I915_WRITE(CURBASE(pipe), base); POSTING_READ(CURBASE(pipe)); } @@ -7941,15 +7939,12 @@ static void ivb_update_cursor(struct drm_crtc *crtc, u32 base) struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int pipe = intel_crtc->pipe; - bool visible = base != 0; - - if (intel_crtc->cursor_visible != visible) { - int16_t width = intel_crtc->cursor_width; - uint32_t cntl = I915_READ(CURCNTR(pipe)); - if (base) { - cntl &= ~CURSOR_MODE; - cntl |= MCURSOR_GAMMA_ENABLE; - switch (width) { + uint32_t cntl; + + cntl = 0; + if (base) { + cntl = MCURSOR_GAMMA_ENABLE; + switch (intel_crtc->cursor_width) { case 64: cntl |= CURSOR_MODE_64_ARGB_AX; break; @@ -7962,21 +7957,18 @@ static void ivb_update_cursor(struct drm_crtc *crtc, u32 base) default: WARN_ON(1); return; - } - } else { - cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE); - cntl |= CURSOR_MODE_DISABLE; - } - if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { - cntl |= CURSOR_PIPE_CSC_ENABLE; - cntl &= ~CURSOR_TRICKLE_FEED_DISABLE; } - I915_WRITE(CURCNTR(pipe), cntl); + } + if (IS_HASWELL(dev) || IS_BROADWELL(dev)) + cntl |= CURSOR_PIPE_CSC_ENABLE; - intel_crtc->cursor_visible = visible; + if (intel_crtc->cursor_cntl != cntl) { + I915_WRITE(CURCNTR(pipe), cntl); + POSTING_READ(CURCNTR(pipe)); + intel_crtc->cursor_cntl = cntl; } + /* and commit changes on next vblank */ - POSTING_READ(CURCNTR(pipe)); I915_WRITE(CURBASE(pipe), base); POSTING_READ(CURBASE(pipe)); } @@ -7992,7 +7984,6 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc, int x = intel_crtc->cursor_x; int y = intel_crtc->cursor_y; u32 base = 0, pos = 0; - bool visible; if (on) base = intel_crtc->cursor_addr; @@ -8021,8 +8012,7 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc, } pos |= y << CURSOR_Y_SHIFT; - visible = base != 0; - if (!visible && !intel_crtc->cursor_visible) + if (base == 0 && intel_crtc->cursor_base == 0) return; I915_WRITE(CURPOS(pipe), pos); @@ -8033,6 +8023,7 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc, i845_update_cursor(crtc, base); else i9xx_update_cursor(crtc, base); + intel_crtc->cursor_base = base; } static int intel_crtc_cursor_set(struct drm_crtc *crtc, @@ -10993,6 +10984,9 @@ static void intel_crtc_init(struct drm_device *dev, int pipe) intel_crtc->plane = !pipe; } + intel_crtc->cursor_base = ~0; + intel_crtc->cursor_cntl = ~0; + init_waitqueue_head(&intel_crtc->vbl_wait); BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) || diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 8ce90d621c20..bda0ae3d80cc 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -386,7 +386,8 @@ struct intel_crtc { uint32_t cursor_addr; int16_t cursor_x, cursor_y; int16_t cursor_width, cursor_height; - bool cursor_visible; + uint32_t cursor_cntl; + uint32_t cursor_base; struct intel_plane_config plane_config; struct intel_crtc_config config; -- 2.11.0