diff options
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 49 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_dma.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 5 |
4 files changed, 66 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index 55340de618e..96e8b9b2cb3 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -477,6 +477,54 @@ static int i915_drpc_info(struct seq_file *m, void *unused) return 0; } +static int i915_fbc_status(struct seq_file *m, void *unused) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + struct drm_crtc *crtc; + drm_i915_private_t *dev_priv = dev->dev_private; + bool fbc_enabled = false; + + if (!dev_priv->display.fbc_enabled) { + seq_printf(m, "FBC unsupported on this chipset\n"); + return 0; + } + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + if (!crtc->enabled) + continue; + if (dev_priv->display.fbc_enabled(crtc)) + fbc_enabled = true; + } + + if (fbc_enabled) { + seq_printf(m, "FBC enabled\n"); + } else { + seq_printf(m, "FBC disabled: "); + switch (dev_priv->no_fbc_reason) { + case FBC_STOLEN_TOO_SMALL: + seq_printf(m, "not enough stolen memory"); + break; + case FBC_UNSUPPORTED_MODE: + seq_printf(m, "mode not supported"); + break; + case FBC_MODE_TOO_LARGE: + seq_printf(m, "mode too large"); + break; + case FBC_BAD_PLANE: + seq_printf(m, "FBC unsupported on plane"); + break; + case FBC_NOT_TILED: + seq_printf(m, "scanout buffer not tiled"); + break; + default: + seq_printf(m, "unknown reason"); + } + seq_printf(m, "\n"); + } + return 0; +} + static int i915_wedged_open(struct inode *inode, struct file *filp) @@ -599,6 +647,7 @@ static struct drm_info_list i915_debugfs_list[] = { {"i915_delayfreq_table", i915_delayfreq_table, 0}, {"i915_inttoext_table", i915_inttoext_table, 0}, {"i915_drpc_info", i915_drpc_info, 0}, + {"i915_fbc_status", i915_fbc_status, 0}, }; #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 3afe361ec55..47805a41395 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1249,6 +1249,7 @@ static void i915_setup_compression(struct drm_device *dev, int size) /* Leave 1M for line length buffer & misc. */ compressed_fb = drm_mm_search_free(&dev_priv->vram, size, 4096, 0); if (!compressed_fb) { + dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL; i915_warn_stolen(dev); return; } @@ -1256,6 +1257,7 @@ static void i915_setup_compression(struct drm_device *dev, int size) compressed_fb = drm_mm_get_block(compressed_fb, size, 4096); if (!compressed_fb) { i915_warn_stolen(dev); + dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL; return; } diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 7df89ae8172..953ad64e055 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -192,6 +192,14 @@ struct intel_device_info { u8 cursor_needs_physical : 1; }; +enum no_fbc_reason { + FBC_STOLEN_TOO_SMALL, /* not enough space to hold compressed buffers */ + FBC_UNSUPPORTED_MODE, /* interlace or doublescanned mode */ + FBC_MODE_TOO_LARGE, /* mode too large for compression */ + FBC_BAD_PLANE, /* fbc not supported on plane */ + FBC_NOT_TILED, /* buffer not tiled */ +}; + typedef struct drm_i915_private { struct drm_device *dev; @@ -597,6 +605,8 @@ typedef struct drm_i915_private { u8 cur_delay; u8 min_delay; u8 max_delay; + + enum no_fbc_reason no_fbc_reason; } drm_i915_private_t; /** driver private structure attached to each drm_gem_object */ diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e879885f475..a483f41e9f2 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1188,25 +1188,30 @@ static void intel_update_fbc(struct drm_crtc *crtc, if (intel_fb->obj->size > dev_priv->cfb_size) { DRM_DEBUG_KMS("framebuffer too large, disabling " "compression\n"); + dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL; goto out_disable; } if ((mode->flags & DRM_MODE_FLAG_INTERLACE) || (mode->flags & DRM_MODE_FLAG_DBLSCAN)) { DRM_DEBUG_KMS("mode incompatible with compression, " "disabling\n"); + dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE; goto out_disable; } if ((mode->hdisplay > 2048) || (mode->vdisplay > 1536)) { DRM_DEBUG_KMS("mode too large for compression, disabling\n"); + dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE; goto out_disable; } if ((IS_I915GM(dev) || IS_I945GM(dev)) && plane != 0) { DRM_DEBUG_KMS("plane not 0, disabling compression\n"); + dev_priv->no_fbc_reason = FBC_BAD_PLANE; goto out_disable; } if (obj_priv->tiling_mode != I915_TILING_X) { DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n"); + dev_priv->no_fbc_reason = FBC_NOT_TILED; goto out_disable; } |