@@ -1119,34 +1119,47 @@ static void i915_setup_compression(struct drm_device *dev, int size)
return;
}
- compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096, 4096, 0);
- if (!compressed_llb) {
- i915_warn_stolen(dev);
- return;
+ cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
+ if (!cfb_base) {
+ DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
+ drm_mm_put_block(compressed_fb);
}
- compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
- if (!compressed_llb) {
- i915_warn_stolen(dev);
- return;
+ if (!IS_GM45(dev)) {
+ compressed_llb = drm_mm_search_free(&dev_priv->vram, 4096,
+ 4096, 0);
+ if (!compressed_llb) {
+ i915_warn_stolen(dev);
+ return;
+ }
+
+ compressed_llb = drm_mm_get_block(compressed_llb, 4096, 4096);
+ if (!compressed_llb) {
+ i915_warn_stolen(dev);
+ return;
+ }
+
+ ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
+ if (!ll_base) {
+ DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
+ drm_mm_put_block(compressed_fb);
+ drm_mm_put_block(compressed_llb);
+ }
}
dev_priv->cfb_size = size;
- cfb_base = i915_gtt_to_phys(dev, compressed_fb->start);
- ll_base = i915_gtt_to_phys(dev, compressed_llb->start);
- if (!cfb_base || !ll_base) {
- DRM_ERROR("failed to get stolen phys addr, disabling FBC\n");
- drm_mm_put_block(compressed_fb);
- drm_mm_put_block(compressed_llb);
+ if (IS_GM45(dev)) {
+ g4x_disable_fbc(dev);
+ I915_WRITE(DPFC_CB_BASE, compressed_fb->start);
+ } else {
+ i8xx_disable_fbc(dev);
+ I915_WRITE(FBC_CFB_BASE, cfb_base);
+ I915_WRITE(FBC_LL_BASE, ll_base);
}
- i8xx_disable_fbc(dev);
-
DRM_DEBUG("FBC base 0x%08lx, ll base 0x%08lx, size %dM\n", cfb_base,
ll_base, size >> 20);
- I915_WRITE(FBC_CFB_BASE, cfb_base);
- I915_WRITE(FBC_LL_BASE, ll_base);
}
static int i915_load_modeset_init(struct drm_device *dev,
@@ -1194,7 +1207,7 @@ static int i915_load_modeset_init(struct drm_device *dev,
goto out;
/* Try to set up FBC with a reasonable compressed buffer size */
- if (IS_MOBILE(dev) && (IS_I9XX(dev) || IS_I965G(dev)) &&
+ if (IS_MOBILE(dev) && (IS_I9XX(dev) || IS_I965G(dev) || IS_GM45(dev)) &&
i915_powersave) {
int cfb_size;
@@ -827,6 +827,7 @@ static inline void opregion_enable_asle(struct drm_device *dev) { return; }
extern void intel_modeset_init(struct drm_device *dev);
extern void intel_modeset_cleanup(struct drm_device *dev);
extern void i8xx_disable_fbc(struct drm_device *dev);
+extern void g4x_disable_fbc(struct drm_device *dev);
/**
* Lock test for when it's just for synchronization of ring access.
@@ -351,6 +351,33 @@
#define FBC_LL_SIZE (1536)
+/* Framebuffer compression for GM45+ */
+#define DPFC_CB_BASE 0x3200
+#define DPFC_CONTROL 0x3208
+#define DPFC_CTL_EN (1<<31)
+#define DPFC_CTL_PLANEA (0<<30)
+#define DPFC_CTL_PLANEB (1<<30)
+#define DPFC_CTL_FENCE_EN (1<<29)
+#define DPFC_SR_EN (1<<10)
+#define DPFC_CTL_LIMIT_1X (0<<6)
+#define DPFC_CTL_LIMIT_2X (1<<6)
+#define DPFC_CTL_LIMIT_4X (2<<6)
+#define DPFC_RECOMP_CTL 0x320c
+#define DPFC_RECOMP_STALL_EN (1<<27)
+#define DPFC_RECOMP_STALL_WM_SHIFT (16)
+#define DPFC_RECOMP_STALL_WM_MASK (0x07ff0000)
+#define DPFC_RECOMP_TIMER_COUNT_SHIFT (0)
+#define DPFC_RECOMP_TIMER_COUNT_MASK (0x0000003f)
+#define DPFC_STATUS 0x3210
+#define DPFC_INVAL_SEG_SHIFT (16)
+#define DPFC_INVAL_SEG_MASK (0x07ff0000)
+#define DPFC_COMP_SEG_SHIFT (0)
+#define DPFC_COMP_SEG_MASK (0x000003ff)
+#define DPFC_STATUS2 0x3214
+#define DPFC_FENCE_YOFF 0x3218
+#define DPFC_CHICKEN 0x3224
+#define DPFC_HT_MODIFY (1<<31)
+
/*
* GPIO regs
*/
@@ -1030,6 +1030,65 @@ static bool i8xx_fbc_enabled(struct drm_crtc *crtc)
return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
}
+static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_framebuffer *fb = crtc->fb;
+ struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
+ struct drm_i915_gem_object *obj_priv = intel_fb->obj->driver_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int plane = (intel_crtc->plane == 0 ? DPFC_CTL_PLANEA :
+ DPFC_CTL_PLANEB);
+ unsigned long stall_watermark = 200;
+ u32 dpfc_ctl;
+
+ dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
+ dev_priv->cfb_fence = obj_priv->fence_reg;
+ dev_priv->cfb_plane = intel_crtc->plane;
+
+ dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
+ if (obj_priv->tiling_mode != I915_TILING_NONE) {
+ dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence;
+ I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
+ } else {
+ I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY);
+ }
+
+ I915_WRITE(DPFC_CONTROL, dpfc_ctl);
+ I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
+ (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
+ (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
+ I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
+
+ /* enable it... */
+ I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
+
+ DRM_DEBUG("enabled fbc on plane %d\n", intel_crtc->plane);
+}
+
+void g4x_disable_fbc(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 dpfc_ctl;
+
+ /* Disable compression */
+ dpfc_ctl = I915_READ(DPFC_CONTROL);
+ dpfc_ctl &= ~DPFC_CTL_EN;
+ I915_WRITE(DPFC_CONTROL, dpfc_ctl);
+ intel_wait_for_vblank(dev);
+
+ DRM_DEBUG("disabled FBC\n");
+}
+
+static bool g4x_fbc_enabled(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
+}
+
/**
* intel_update_fbc - enable/disable FBC as needed
* @crtc: CRTC to point the compressor at
@@ -1097,7 +1156,7 @@ static void intel_update_fbc(struct drm_crtc *crtc,
DRM_DEBUG("mode too large for compression, disabling\n");
goto out_disable;
}
- if (IS_I9XX(dev) && plane != 0) {
+ if ((IS_I915GM(dev) || IS_I945GM(dev)) && plane != 0) {
DRM_DEBUG("plane not 0, disabling compression\n");
goto out_disable;
}
@@ -1265,7 +1324,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
I915_READ(dspbase);
}
- if (I915_HAS_FBC(dev) && (IS_I965G(dev) || plane == 0))
+ if ((IS_I965G(dev) || plane == 0))
intel_update_fbc(crtc, &crtc->mode);
intel_wait_for_vblank(dev);
@@ -1774,7 +1833,8 @@ static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
intel_crtc_load_lut(crtc);
- intel_update_fbc(crtc, &crtc->mode);
+ if ((IS_I965G(dev) || plane == 0))
+ intel_update_fbc(crtc, &crtc->mode);
/* Give the overlay scaler a chance to enable if it's on this pipe */
//intel_crtc_dpms_video(crtc, true); TODO
@@ -2988,7 +3048,8 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
/* Flush the plane changes */
ret = intel_pipe_set_base(crtc, x, y, old_fb);
- intel_update_fbc(crtc, &crtc->mode);
+ if ((IS_I965G(dev) || plane == 0))
+ intel_update_fbc(crtc, &crtc->mode);
intel_update_watermarks(dev);
@@ -3121,7 +3182,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
drm_gem_object_unreference(intel_crtc->cursor_bo);
}
- if (I915_HAS_FBC(dev) && (IS_I965G(dev) || plane == 0))
+ if ((IS_I965G(dev) || plane == 0))
intel_update_fbc(crtc, &crtc->mode);
mutex_unlock(&dev->struct_mutex);
@@ -4108,12 +4169,16 @@ static void intel_init_display(struct drm_device *dev)
/* Only mobile has FBC, leave pointers NULL for other chips */
if (IS_MOBILE(dev)) {
- /* 855GM needs testing */
- if (IS_I965GM(dev) || IS_I945GM(dev) || IS_I915GM(dev)) {
+ if (IS_GM45(dev)) {
+ dev_priv->display.fbc_enabled = g4x_fbc_enabled;
+ dev_priv->display.enable_fbc = g4x_enable_fbc;
+ dev_priv->display.disable_fbc = g4x_disable_fbc;
+ } else if (IS_I965GM(dev) || IS_I945GM(dev) || IS_I915GM(dev)) {
dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
dev_priv->display.enable_fbc = i8xx_enable_fbc;
dev_priv->display.disable_fbc = i8xx_disable_fbc;
}
+ /* 855GM needs testing */
}
/* Returns the core display clock speed */